/* roulang page: index */
:root {
            --bs-primary: #1A1A1A;
            --bs-accent: #C8FF00;
            --bs-bg: #F5F4F0;
            --bs-white: #FFFFFF;
            --bs-text: #1A1A1A;
            --bs-text-secondary: #5A5A5A;
            --bs-text-muted: #8A8A8A;
            --bs-border: #E0E0E0;
            --bs-border-rgba: rgba(0, 0, 0, 0.08);
            --bs-radius-sm: 6px;
            --bs-radius: 8px;
            --bs-radius-lg: 12px;
            --bs-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --bs-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.10);
            --bs-font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --bs-font-num: "Inter", "Roboto", sans-serif;
            --bs-section-gap: 96px;
            --bs-card-pad: 28px;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--bs-font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--bs-text);
            background-color: var(--bs-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 72px;
            padding-bottom: 0;
        }

        a {
            color: var(--bs-text);
            text-decoration: none;
            transition: color .25s ease, border-color .25s ease, background-color .25s ease, transform .25s ease;
        }

        a:hover {
            color: var(--bs-primary);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--bs-radius);
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--bs-font-sans);
            font-size: 16px;
        }

        button:focus,
        a:focus,
        input:focus,
        select:focus,
        textarea:focus {
            outline: 2px solid var(--bs-accent);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (min-width: 1400px) {
            .container {
                max-width: 1320px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--bs-primary);
            min-height: 72px;
            display: flex;
            align-items: center;
            border-bottom: 2px solid rgba(200, 255, 0, 0.22);
            transition: box-shadow .3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.28);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .brand-logo {
            font-size: 26px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .brand-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--bs-accent);
            color: var(--bs-primary);
            font-size: 20px;
            font-weight: 900;
            border-radius: 8px;
            letter-spacing: -0.5px;
        }

        .brand-logo:hover {
            color: #FFFFFF;
            opacity: .92;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .main-nav a {
            color: rgba(255, 255, 255, .78);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 6px;
            position: relative;
            white-space: nowrap;
            letter-spacing: .3px;
            transition: color .25s ease, background-color .25s ease;
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            background: var(--bs-accent);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .3s ease;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: #FFFFFF;
            background: rgba(200, 255, 0, 0.08);
        }

        .main-nav a:hover::after,
        .main-nav a.active::after {
            transform: scaleX(1);
        }

        .header-cta {
            background: var(--bs-accent);
            color: var(--bs-primary);
            font-weight: 700;
            font-size: 14px;
            padding: 10px 20px;
            border-radius: 8px;
            border: none;
            white-space: nowrap;
            transition: background-color .25s ease, transform .25s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .header-cta:hover {
            background: #d8ff3a;
            color: var(--bs-primary);
            transform: scale(1.02);
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, .35);
            color: #FFFFFF;
            font-size: 20px;
            padding: 6px 12px;
            border-radius: 6px;
            background: transparent;
        }

        .navbar-toggler:focus {
            outline: 2px solid var(--bs-accent);
            outline-offset: 2px;
        }

        @media (max-width: 991px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bs-primary);
                flex-direction: column;
                gap: 4px;
                padding: 16px 24px 24px;
                border-bottom: 2px solid rgba(200, 255, 0, 0.25);
                box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
                align-items: stretch;
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav a {
                padding: 12px 16px;
                font-size: 16px;
                border-radius: 8px;
            }

            .main-nav a::after {
                display: none;
            }

            .header-cta {
                margin-top: 8px;
                justify-content: center;
            }
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            background: var(--bs-primary);
            padding: 80px 0 100px;
            overflow: hidden;
        }

        .hero-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: .32;
            z-index: 1;
        }

        .hero-section::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 26, 26, 0.62) 0%, rgba(26, 26, 26, 0.82) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            color: #FFFFFF;
            width: 100%;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(200, 255, 0, 0.14);
            border: 1px solid rgba(200, 255, 0, 0.35);
            color: var(--bs-accent);
            font-size: 14px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50px;
            letter-spacing: .5px;
            margin-bottom: 24px;
        }

        .hero-title {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.18;
            letter-spacing: -1px;
            margin-bottom: 20px;
            max-width: 820px;
        }

        .hero-title .accent {
            color: var(--bs-accent);
        }

        .hero-desc {
            font-size: 19px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .82);
            max-width: 680px;
            margin-bottom: 32px;
        }

        .hero-search-bar {
            display: flex;
            gap: 12px;
            max-width: 620px;
            margin-bottom: 28px;
            flex-wrap: wrap;
        }

        .hero-search-bar input {
            flex: 1;
            min-width: 240px;
            background: rgba(255, 255, 255, .10);
            border: 1px solid rgba(255, 255, 255, .25);
            color: #FFFFFF;
            padding: 14px 18px;
            border-radius: 10px;
            font-size: 16px;
            transition: border-color .25s ease, background-color .25s ease;
        }

        .hero-search-bar input::placeholder {
            color: rgba(255, 255, 255, .55);
        }

        .hero-search-bar input:focus {
            border-color: var(--bs-accent);
            background: rgba(255, 255, 255, .14);
            outline: none;
        }

        .hero-search-btn {
            background: var(--bs-accent);
            color: var(--bs-primary);
            font-weight: 700;
            padding: 14px 28px;
            border-radius: 10px;
            border: none;
            white-space: nowrap;
            transition: background-color .25s ease, transform .25s ease;
            font-size: 16px;
        }

        .hero-search-btn:hover {
            background: #d8ff3a;
            transform: scale(1.02);
        }

        .hero-hot-links {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .hero-hot-links span {
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            font-weight: 500;
        }

        .hero-hot-links a {
            color: #FFFFFF;
            font-size: 14px;
            font-weight: 500;
            padding: 6px 14px;
            border: 1px solid rgba(255, 255, 255, .30);
            border-radius: 20px;
            transition: border-color .25s ease, background-color .25s ease, color .25s ease;
        }

        .hero-hot-links a:hover {
            border-color: var(--bs-accent);
            background: rgba(200, 255, 0, 0.12);
            color: var(--bs-accent);
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-top: 28px;
        }

        .btn-primary-cta {
            background: var(--bs-accent);
            color: var(--bs-primary);
            font-weight: 700;
            padding: 14px 28px;
            border-radius: 8px;
            border: none;
            font-size: 16px;
            transition: background-color .25s ease, transform .25s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary-cta:hover {
            background: #d8ff3a;
            color: var(--bs-primary);
            transform: scale(1.02);
        }

        .btn-ghost-cta {
            background: transparent;
            color: #FFFFFF;
            font-weight: 600;
            padding: 14px 28px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, .55);
            font-size: 16px;
            transition: border-color .25s ease, color .25s ease, background-color .25s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-ghost-cta:hover {
            border-color: var(--bs-accent);
            color: var(--bs-accent);
            background: rgba(200, 255, 0, 0.08);
        }

        .hero-scroll-hint {
            position: absolute;
            right: 28px;
            bottom: 30px;
            z-index: 2;
            color: rgba(255, 255, 255, .6);
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: .5px;
        }

        .hero-scroll-hint .scroll-line {
            width: 1px;
            height: 40px;
            background: linear-gradient(180deg, var(--bs-accent), transparent);
            animation: scrollPulse 2s infinite;
        }

        @keyframes scrollPulse {
            0%,
            100% {
                opacity: .4;
            }
            50% {
                opacity: 1;
            }
        }

        @media (max-width: 991px) {
            .hero-title {
                font-size: 38px;
            }
            .hero-section {
                min-height: 78vh;
                padding: 60px 0 80px;
            }
        }

        @media (max-width: 767px) {
            .hero-title {
                font-size: 30px;
                letter-spacing: -0.5px;
            }
            .hero-desc {
                font-size: 16px;
            }
            .hero-search-bar {
                flex-direction: column;
            }
            .hero-search-btn {
                width: 100%;
                justify-content: center;
            }
            .hero-actions {
                flex-direction: column;
            }
            .btn-primary-cta,
            .btn-ghost-cta {
                justify-content: center;
            }
            .hero-scroll-hint {
                display: none;
            }
        }

        /* ===== 板块通用 ===== */
        .section-block {
            padding: var(--bs-section-gap) 0;
        }

        .section-block.bg-white {
            background: #FFFFFF;
        }

        .section-block.bg-dark {
            background: var(--bs-primary);
            color: #FFFFFF;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--bs-text-muted);
            margin-bottom: 14px;
        }

        .section-label .label-dot {
            width: 8px;
            height: 8px;
            background: var(--bs-accent);
            border-radius: 50%;
        }

        .bg-dark .section-label {
            color: rgba(255, 255, 255, .55);
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            color: inherit;
        }

        .section-desc {
            font-size: 17px;
            line-height: 1.8;
            color: var(--bs-text-secondary);
            max-width: 720px;
            margin-bottom: 32px;
        }

        .bg-dark .section-desc {
            color: rgba(255, 255, 255, .7);
        }

        @media (max-width: 767px) {
            .section-block {
                padding: 60px 0;
            }
            .section-title {
                font-size: 26px;
            }
            .section-desc {
                font-size: 16px;
            }
        }

        /* ===== 卖点三连 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .feature-card {
            background: #FFFFFF;
            border: 1px solid var(--bs-border-rgba);
            border-radius: var(--bs-radius-lg);
            padding: var(--bs-card-pad);
            transition: box-shadow .3s ease, transform .3s ease;
            position: relative;
            overflow: hidden;
        }

        .feature-card:hover {
            box-shadow: var(--bs-shadow-lg);
            transform: translateY(-2px);
        }

        .feature-card.large {
            grid-row: span 2;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-height: 380px;
            background: var(--bs-primary);
            color: #FFFFFF;
            border-color: var(--bs-primary);
        }

        .feature-card.large .feature-title {
            color: #FFFFFF;
            font-size: 26px;
        }

        .feature-card.large .feature-desc {
            color: rgba(255, 255, 255, .75);
        }

        .feature-number {
            font-family: var(--bs-font-num);
            font-size: 38px;
            font-weight: 800;
            color: var(--bs-accent);
            line-height: 1;
            margin-bottom: 16px;
        }

        .feature-card.large .feature-number {
            font-size: 46px;
        }

        .feature-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--bs-text);
        }

        .feature-card.large .feature-title {
            color: #FFFFFF;
        }

        .feature-desc {
            font-size: 15px;
            line-height: 1.7;
            color: var(--bs-text-secondary);
        }

        .feature-icon {
            font-size: 28px;
            color: var(--bs-accent);
            margin-bottom: 12px;
        }

        .feature-card.large .feature-icon {
            font-size: 38px;
            color: var(--bs-accent);
        }

        @media (max-width: 991px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            .feature-card.large {
                grid-row: auto;
                min-height: 280px;
            }
        }

        /* ===== 场景演示 ===== */
        .scene-scroll-wrapper {
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            display: flex;
            gap: 20px;
            padding: 8px 2px 24px;
            scrollbar-width: thin;
            scrollbar-color: var(--bs-text-muted) transparent;
            -webkit-overflow-scrolling: touch;
        }

        .scene-scroll-wrapper::-webkit-scrollbar {
            height: 6px;
        }

        .scene-scroll-wrapper::-webkit-scrollbar-track {
            background: transparent;
        }

        .scene-scroll-wrapper::-webkit-scrollbar-thumb {
            background: var(--bs-text-muted);
            border-radius: 3px;
        }

        .scene-card {
            flex: 0 0 340px;
            scroll-snap-align: start;
            background: #FFFFFF;
            border-radius: var(--bs-radius-lg);
            overflow: hidden;
            border: 1px solid var(--bs-border-rgba);
            transition: box-shadow .3s ease, transform .3s ease;
        }

        .scene-card:hover {
            box-shadow: var(--bs-shadow-lg);
            transform: translateY(-2px);
        }

        .scene-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 12px 12px 0 0;
        }

        .scene-card-body {
            padding: 16px 20px 20px;
        }

        .scene-card-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .scene-card-body p {
            font-size: 14px;
            color: var(--bs-text-secondary);
            margin-bottom: 0;
            line-height: 1.6;
        }

        .scene-nav-btns {
            display: flex;
            gap: 10px;
            margin-top: 6px;
        }

        .scene-nav-btns button {
            background: #FFFFFF;
            border: 1px solid var(--bs-border);
            color: var(--bs-text);
            width: 44px;
            height: 44px;
            border-radius: 8px;
            font-size: 16px;
            transition: background-color .25s ease, border-color .25s ease, color .25s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .scene-nav-btns button:hover {
            background: var(--bs-accent);
            border-color: var(--bs-accent);
            color: var(--bs-primary);
        }

        @media (max-width: 767px) {
            .scene-card {
                flex: 0 0 280px;
            }
            .scene-card img {
                height: 160px;
            }
        }

        /* ===== 品牌介绍 ===== */
        .brand-intro-grid {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .brand-intro-text .section-title {
            margin-bottom: 20px;
        }

        .brand-intro-text p {
            font-size: 16px;
            line-height: 2;
            color: var(--bs-text-secondary);
            margin-bottom: 16px;
        }

        .brand-intro-text .highlight {
            color: var(--bs-text);
            font-weight: 600;
            border-left: 3px solid var(--bs-accent);
            padding-left: 14px;
        }

        .brand-intro-image {
            border-radius: var(--bs-radius-lg);
            overflow: hidden;
            border: 1px solid var(--bs-border-rgba);
            box-shadow: var(--bs-shadow-sm);
        }

        .brand-intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--bs-radius-lg);
            min-height: 320px;
        }

        @media (max-width: 991px) {
            .brand-intro-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .brand-intro-image img {
                min-height: 240px;
            }
        }

        /* ===== 深度内容 ===== */
        .deep-content-wrapper {
            max-width: 860px;
        }

        .deep-content-wrapper .section-title {
            margin-bottom: 28px;
        }

        .deep-content-wrapper h3 {
            font-size: 22px;
            font-weight: 700;
            margin: 28px 0 12px;
            color: var(--bs-text);
        }

        .bg-dark .deep-content-wrapper h3 {
            color: #FFFFFF;
        }

        .deep-content-wrapper p {
            font-size: 16px;
            line-height: 2;
            color: var(--bs-text-secondary);
            margin-bottom: 18px;
        }

        .bg-dark .deep-content-wrapper p {
            color: rgba(255, 255, 255, .72);
        }

        .deep-content-wrapper .key-point {
            background: rgba(200, 255, 0, 0.08);
            border-left: 3px solid var(--bs-accent);
            padding: 16px 20px;
            border-radius: 0 8px 8px 0;
            margin: 20px 0;
            font-weight: 500;
            color: var(--bs-text);
        }

        .bg-dark .deep-content-wrapper .key-point {
            background: rgba(200, 255, 0, 0.12);
            color: #FFFFFF;
        }

        /* ===== 新闻中心 ===== */
        .news-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .news-item {
            display: flex;
            gap: 24px;
            padding: 22px 12px;
            border-bottom: 1px solid var(--bs-border);
            transition: background-color .25s ease;
            align-items: flex-start;
        }

        .news-item:last-child {
            border-bottom: none;
        }

        .news-item:hover {
            background: rgba(0, 0, 0, 0.025);
            border-radius: 8px;
        }

        .news-date {
            flex: 0 0 60px;
            text-align: center;
            font-family: var(--bs-font-num);
            line-height: 1.2;
        }

        .news-date .day {
            font-size: 28px;
            font-weight: 800;
            color: var(--bs-text);
            display: block;
        }

        .news-date .month {
            font-size: 13px;
            color: var(--bs-text-muted);
            font-weight: 600;
        }

        .news-body {
            flex: 1;
        }

        .news-body h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .news-body h3 a {
            color: var(--bs-text);
        }

        .news-body h3 a:hover {
            color: var(--bs-primary);
        }

        .news-body p {
            font-size: 14px;
            color: var(--bs-text-secondary);
            line-height: 1.7;
            margin-bottom: 8px;
        }

        .read-more {
            color: var(--bs-text);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-bottom: 2px solid var(--bs-accent);
            padding-bottom: 2px;
            transition: color .25s ease, border-color .25s ease;
        }

        .read-more:hover {
            color: var(--bs-text);
            border-color: var(--bs-primary);
        }

        @media (max-width: 767px) {
            .news-item {
                flex-direction: column;
                gap: 8px;
                padding: 16px 4px;
            }
            .news-date {
                flex: none;
                text-align: left;
                display: flex;
                align-items: baseline;
                gap: 8px;
            }
            .news-date .day {
                font-size: 20px;
            }
        }

        /* ===== 社会认同 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
            margin-bottom: 48px;
        }

        .stat-item {
            padding: 20px;
        }

        .stat-number {
            font-family: var(--bs-font-num);
            font-size: 46px;
            font-weight: 800;
            color: var(--bs-accent);
            line-height: 1.1;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 15px;
            color: rgba(255, 255, 255, .68);
            font-weight: 500;
        }

        .partners-wall {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            align-items: center;
            padding: 28px 0 36px;
            border-top: 1px solid rgba(255, 255, 255, .12);
            border-bottom: 1px solid rgba(255, 255, 255, .12);
        }

        .partner-name {
            font-size: 16px;
            font-weight: 600;
            color: rgba(255, 255, 255, .55);
            letter-spacing: 1px;
            padding: 8px 16px;
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: 6px;
            transition: color .25s ease, border-color .25s ease;
        }

        .partner-name:hover {
            color: var(--bs-accent);
            border-color: var(--bs-accent);
        }

        .testimonial-card {
            background: rgba(255, 255, 255, .05);
            border-left: 3px solid var(--bs-accent);
            border-radius: 0 8px 8px 0;
            padding: 20px 24px;
            max-width: 600px;
            margin-top: 24px;
        }

        .testimonial-card p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 8px;
        }

        .testimonial-card .testimonial-author {
            font-size: 13px;
            color: rgba(255, 255, 255, .55);
            font-weight: 500;
        }

        @media (max-width: 991px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-number {
                font-size: 36px;
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 30px;
            }
        }

        /* ===== 权益阶梯 ===== */
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 28px;
        }

        .tier-card {
            background: #FFFFFF;
            border: 1px solid var(--bs-border-rgba);
            border-radius: var(--bs-radius-lg);
            padding: 28px 24px;
            position: relative;
            transition: box-shadow .3s ease, transform .3s ease;
            display: flex;
            flex-direction: column;
        }

        .tier-card:hover {
            box-shadow: var(--bs-shadow-lg);
            transform: translateY(-2px);
        }

        .tier-card.recommended {
            border-color: var(--bs-accent);
            box-shadow: 0 0 0 2px rgba(200, 255, 0, 0.25);
        }

        .tier-badge {
            position: absolute;
            top: -12px;
            right: 20px;
            background: var(--bs-accent);
            color: var(--bs-primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
        }

        .tier-name {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .tier-desc {
            font-size: 14px;
            color: var(--bs-text-secondary);
            margin-bottom: 20px;
            line-height: 1.6;
            flex-grow: 1;
        }

        .tier-price {
            font-family: var(--bs-font-num);
            font-size: 33px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .tier-price span {
            font-size: 14px;
            font-weight: 500;
            color: var(--bs-text-muted);
        }

        .tier-list {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
            font-size: 14px;
            line-height: 1.7;
        }

        .tier-list li {
            padding: 6px 0;
            border-bottom: 1px solid var(--bs-border-rgba);
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--bs-text-secondary);
        }

        .tier-list li i {
            color: var(--bs-text);
            font-size: 12px;
        }

        .btn-tier {
            background: var(--bs-primary);
            color: #FFFFFF;
            font-weight: 600;
            padding: 12px 20px;
            border-radius: 8px;
            border: none;
            transition: background-color .25s ease, color .25s ease;
            text-align: center;
        }

        .btn-tier:hover {
            background: var(--bs-accent);
            color: var(--bs-primary);
        }

        .tier-card.recommended .btn-tier {
            background: var(--bs-accent);
            color: var(--bs-primary);
        }

        .tier-card.recommended .btn-tier:hover {
            background: var(--bs-primary);
            color: #FFFFFF;
        }

        @media (max-width: 991px) {
            .tier-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list .accordion-item {
            background: #FFFFFF;
            border: 1px solid var(--bs-border-rgba);
            border-radius: var(--bs-radius-lg);
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--bs-shadow-sm);
            transition: box-shadow .25s ease;
        }

        .faq-list .accordion-item:hover {
            box-shadow: var(--bs-shadow-lg);
        }

        .faq-list .accordion-button {
            background: #FFFFFF;
            color: var(--bs-text);
            font-weight: 600;
            font-size: 16px;
            padding: 18px 24px;
            border-radius: var(--bs-radius-lg);
            box-shadow: none;
        }

        .faq-list .accordion-button:not(.collapsed) {
            background: #FAFAF8;
            color: var(--bs-text);
            box-shadow: none;
            border-bottom: 1px solid var(--bs-border-rgba);
        }

        .faq-list .accordion-button:focus {
            outline: 2px solid var(--bs-accent);
            outline-offset: -2px;
            box-shadow: none;
        }

        .faq-list .accordion-button::after {
            color: var(--bs-text);
        }

        .faq-list .accordion-body {
            font-size: 15px;
            line-height: 1.8;
            color: var(--bs-text-secondary);
            padding: 18px 24px 22px;
            background: #FFFFFF;
        }

        /* ===== 底部固定转化条 ===== */
        .bottom-sticky-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1040;
            background: var(--bs-primary);
            color: #FFFFFF;
            padding: 14px 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            border-top: 2px solid rgba(200, 255, 0, 0.3);
            box-shadow: 0 -6px 24px rgba(0, 0, 0, 0.2);
            transition: transform .3s ease;
        }

        .bottom-sticky-bar .sticky-text {
            font-size: 16px;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .bottom-sticky-bar .sticky-text i {
            color: var(--bs-accent);
            font-size: 20px;
        }

        .bottom-sticky-cta {
            background: var(--bs-accent);
            color: var(--bs-primary);
            font-weight: 700;
            padding: 10px 24px;
            border-radius: 8px;
            border: none;
            font-size: 15px;
            white-space: nowrap;
            transition: background-color .25s ease, transform .25s ease;
        }

        .bottom-sticky-cta:hover {
            background: #d8ff3a;
            transform: scale(1.02);
        }

        .mobile-fab {
            display: none;
            position: fixed;
            right: 16px;
            bottom: 16px;
            z-index: 1040;
            width: 56px;
            height: 56px;
            background: var(--bs-accent);
            color: var(--bs-primary);
            border-radius: 50%;
            border: none;
            font-size: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
            transition: transform .25s ease, background-color .25s ease;
        }

        .mobile-fab:hover {
            transform: scale(1.06);
            background: #d8ff3a;
        }

        @media (max-width: 767px) {
            .bottom-sticky-bar {
                display: none;
            }
            .mobile-fab {
                display: flex;
            }
            body {
                padding-bottom: 0;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bs-primary);
            color: #FFFFFF;
            padding: 56px 0 0;
            margin-top: 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .12);
        }

        .footer-brand .brand-logo {
            font-size: 24px;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            transition: color .25s ease;
        }

        .footer-col ul li a:hover {
            color: var(--bs-accent);
        }

        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, .55);
        }

        .footer-bottom .footer-links {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 12px;
        }

        .footer-bottom .footer-links a {
            color: rgba(255, 255, 255, .55);
            font-size: 13px;
        }

        .footer-bottom .footer-links a:hover {
            color: var(--bs-accent);
        }

        .footer-bottom .icp-info {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            font-size: 13px;
        }

        .footer-bottom .icp-info span {
            color: rgba(255, 255, 255, .45);
        }

        @media (max-width: 991px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 520px) {
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom .icp-info {
                flex-direction: column;
                gap: 4px;
            }
        }

        /* ===== 动画 ===== */
        .reveal {
            opacity: 0;
            transform: translateY(28px);
            transition: opacity .6s ease, transform .6s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-delay-1 {
            transition-delay: .1s;
        }
        .reveal-delay-2 {
            transition-delay: .2s;
        }
        .reveal-delay-3 {
            transition-delay: .3s;
        }
        .reveal-delay-4 {
            transition-delay: .4s;
        }

        /* ===== 通用按钮重置 ===== */
        .btn {
            border-radius: 8px;
            font-weight: 600;
            transition: background-color .25s ease, color .25s ease, border-color .25s ease, transform .25s ease, box-shadow .25s ease;
        }

        .btn:focus {
            outline: 2px solid var(--bs-accent);
            outline-offset: 2px;
            box-shadow: none;
        }

        .btn-outline-dark {
            border-color: var(--bs-text);
            color: var(--bs-text);
        }

        .btn-outline-dark:hover {
            background: var(--bs-accent);
            border-color: var(--bs-accent);
            color: var(--bs-primary);
        }

        .btn-dark {
            background: var(--bs-primary);
            border-color: var(--bs-primary);
            color: #FFFFFF;
        }

        .btn-dark:hover {
            background: var(--bs-accent);
            border-color: var(--bs-accent);
            color: var(--bs-primary);
        }

        /* ===== 响应式标题统一 ===== */
        @media (max-width: 767px) {
            .section-title {
                font-size: 24px;
                letter-spacing: -0.3px;
            }
            .feature-title {
                font-size: 18px;
            }
            .feature-number {
                font-size: 30px;
            }
            .feature-card.large .feature-number {
                font-size: 36px;
            }
        }

/* roulang page: category1 */
:root {
            --bs-primary: #1A1A1A;
            --bs-accent: #C8FF00;
            --bs-bg: #F5F4F0;
            --bs-white: #FFFFFF;
            --bs-text: #1A1A1A;
            --bs-text-secondary: #5A5A5A;
            --bs-text-muted: #8A8A8A;
            --bs-border: #E0E0E0;
            --bs-border-rgba: rgba(0, 0, 0, 0.08);
            --bs-radius-sm: 6px;
            --bs-radius: 8px;
            --bs-radius-lg: 12px;
            --bs-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --bs-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.10);
            --bs-font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --bs-font-num: "Inter", "Roboto", sans-serif;
            --bs-section-gap: 96px;
            --bs-card-pad: 28px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--bs-font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--bs-text);
            background-color: var(--bs-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 72px;
            padding-bottom: 0;
        }
        a {
            color: var(--bs-text);
            text-decoration: none;
            transition: color .25s ease, border-color .25s ease, background-color .25s ease, transform .25s ease;
        }
        a:hover {
            color: var(--bs-primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--bs-radius);
        }
        button,
        input,
        select,
        textarea {
            font-family: var(--bs-font-sans);
            font-size: 16px;
        }
        button:focus,
        a:focus,
        input:focus,
        select:focus,
        textarea:focus {
            outline: 2px solid var(--bs-accent);
            outline-offset: 2px;
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (min-width: 1400px) {
            .container {
                max-width: 1320px;
            }
        }
        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--bs-primary);
            min-height: 72px;
            display: flex;
            align-items: center;
            border-bottom: 2px solid rgba(200, 255, 0, 0.22);
            transition: box-shadow .3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.28);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .brand-logo {
            font-size: 26px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }
        .brand-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--bs-accent);
            color: var(--bs-primary);
            font-size: 20px;
            font-weight: 900;
            border-radius: 8px;
            letter-spacing: -0.5px;
        }
        .brand-logo:hover {
            color: #FFFFFF;
            opacity: .92;
        }
        .main-nav {
            display: none;
            position: absolute;
            top: 72px;
            left: 0;
            right: 0;
            background: var(--bs-primary);
            flex-direction: column;
            gap: 4px;
            padding: 16px 24px 24px;
            border-bottom: 2px solid rgba(200, 255, 0, 0.25);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
            align-items: stretch;
        }
        .main-nav.open {
            display: flex;
        }
        .main-nav a {
            color: rgba(255, 255, 255, .78);
            font-size: 15px;
            font-weight: 500;
            padding: 12px 16px;
            border-radius: 6px;
            position: relative;
            white-space: nowrap;
            letter-spacing: .3px;
            transition: color .25s ease, background-color .25s ease;
        }
        .main-nav a::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 6px;
            height: 2px;
            background: var(--bs-accent);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .3s ease;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: #FFFFFF;
            background: rgba(200, 255, 0, 0.08);
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            transform: scaleX(1);
        }
        .header-cta {
            background: var(--bs-accent);
            color: var(--bs-primary);
            font-weight: 700;
            font-size: 14px;
            padding: 10px 20px;
            border-radius: 8px;
            border: none;
            white-space: nowrap;
            transition: background-color .25s ease, transform .25s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .header-cta:hover {
            background: #d8ff3a;
            color: var(--bs-primary);
            transform: scale(1.02);
        }
        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, .35);
            color: #FFFFFF;
            font-size: 20px;
            padding: 6px 12px;
            border-radius: 6px;
            background: transparent;
        }
        .navbar-toggler:focus {
            outline: 2px solid var(--bs-accent);
            outline-offset: 2px;
        }
        @media (min-width: 992px) {
            .main-nav {
                display: flex;
                position: static;
                background: transparent;
                flex-direction: row;
                gap: 8px;
                padding: 0;
                border: none;
                box-shadow: none;
                align-items: center;
            }
            .main-nav a {
                padding: 8px 14px;
                font-size: 15px;
            }
            .main-nav a::after {
                left: 14px;
                right: 14px;
                bottom: 2px;
            }
            .navbar-toggler {
                display: none;
            }
        }
        /* ===== 面包屑 ===== */
        .breadcrumb-bar {
            background: #FFFFFF;
            border-bottom: 1px solid var(--bs-border-rgba);
            padding: 14px 0;
            font-size: 14px;
            position: relative;
            z-index: 10;
        }
        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb-bar a {
            color: var(--bs-text-secondary);
            font-weight: 500;
            transition: color .25s ease;
        }
        .breadcrumb-bar a:hover {
            color: var(--bs-primary);
        }
        .breadcrumb-bar .separator {
            color: var(--bs-text-muted);
            font-size: 12px;
            margin: 0 4px;
            user-select: none;
        }
        .breadcrumb-bar .current {
            color: var(--bs-primary);
            font-weight: 700;
            pointer-events: none;
        }
        .breadcrumb-bar .back-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-right: 8px;
            color: var(--bs-text-secondary);
            font-weight: 500;
        }
        .breadcrumb-bar .back-link:hover {
            color: var(--bs-primary);
        }
        /* ===== 分类标题区 ===== */
        .category-hero {
            background: var(--bs-primary);
            color: #FFFFFF;
            padding: 56px 0 64px;
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            z-index: 0;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
        }
        .category-hero .label-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(200, 255, 0, 0.15);
            border: 1px solid rgba(200, 255, 0, 0.35);
            color: var(--bs-accent);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            letter-spacing: .5px;
            margin-bottom: 18px;
        }
        .category-hero h1 {
            font-size: 42px;
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #FFFFFF;
        }
        .category-hero .subtitle {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.9;
            max-width: 720px;
            margin-bottom: 24px;
        }
        .category-hero .hero-stats {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            margin-top: 8px;
        }
        .category-hero .hero-stat-item {
            display: flex;
            align-items: baseline;
            gap: 8px;
        }
        .category-hero .hero-stat-num {
            font-family: var(--bs-font-num);
            font-size: 32px;
            font-weight: 800;
            color: var(--bs-accent);
            letter-spacing: -1px;
        }
        .category-hero .hero-stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            letter-spacing: .5px;
        }
        @media (max-width: 768px) {
            .category-hero {
                padding: 40px 0 48px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .category-hero .subtitle {
                font-size: 15px;
            }
            .category-hero .hero-stats {
                gap: 20px;
            }
            .category-hero .hero-stat-num {
                font-size: 24px;
            }
        }
        /* ===== 赛事卡片区 ===== */
        .section-block {
            padding: var(--bs-section-gap) 0;
        }
        .section-block.alt-bg {
            background: #FFFFFF;
        }
        .section-block .section-head {
            margin-bottom: 36px;
        }
        .section-block .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.3;
            margin-bottom: 10px;
        }
        .section-block .section-head p {
            font-size: 16px;
            color: var(--bs-text-secondary);
            line-height: 1.9;
            max-width: 680px;
            margin-bottom: 0;
        }
        .event-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .event-card {
            background: #FFFFFF;
            border: 1px solid var(--bs-border-rgba);
            border-radius: var(--bs-radius-lg);
            overflow: hidden;
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .event-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--bs-shadow-lg);
            border-color: rgba(200, 255, 0, 0.4);
        }
        .event-card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: #E8E8E8;
        }
        .event-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform .4s ease;
        }
        .event-card:hover .card-img img {
            transform: scale(1.04);
        }
        .event-card .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--bs-accent);
            color: var(--bs-primary);
            font-size: 12px;
            font-weight: 700;
            padding: 5px 12px;
            border-radius: 20px;
            letter-spacing: .3px;
            z-index: 2;
        }
        .event-card .card-body {
            padding: 22px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .event-card .card-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
            letter-spacing: -0.2px;
        }
        .event-card .card-body p {
            font-size: 14px;
            color: var(--bs-text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
            flex: 1;
        }
        .event-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--bs-primary);
            transition: color .25s ease, gap .25s ease;
        }
        .event-card .card-link i {
            font-size: 12px;
            transition: transform .25s ease;
        }
        .event-card .card-link:hover {
            color: var(--bs-primary);
            gap: 10px;
        }
        .event-card .card-link:hover i {
            transform: translateX(2px);
        }
        @media (max-width: 991px) {
            .event-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 575px) {
            .event-card-grid {
                grid-template-columns: 1fr;
            }
            .section-block {
                padding: 64px 0;
            }
            .section-block .section-head h2 {
                font-size: 26px;
            }
        }
        /* ===== 分页 ===== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            align-items: center;
            margin-top: 40px;
            gap: 6px;
            flex-wrap: wrap;
        }
        .pagination-wrap .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: var(--bs-radius);
            background: #FFFFFF;
            border: 1px solid var(--bs-border-rgba);
            color: var(--bs-text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: all .25s ease;
        }
        .pagination-wrap .page-btn:hover {
            border-color: var(--bs-accent);
            color: var(--bs-primary);
            background: rgba(200, 255, 0, 0.1);
        }
        .pagination-wrap .page-btn.active {
            background: var(--bs-primary);
            color: #FFFFFF;
            border-color: var(--bs-primary);
            font-weight: 700;
        }
        .pagination-wrap .page-btn.disabled {
            opacity: .45;
            pointer-events: none;
        }
        /* ===== 数据卖点区 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 28px;
            align-items: stretch;
        }
        .feature-grid .feature-main {
            background: #FFFFFF;
            border: 1px solid var(--bs-border-rgba);
            border-radius: var(--bs-radius-lg);
            padding: 36px 36px 32px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-height: 280px;
        }
        .feature-grid .feature-main .feature-icon {
            font-size: 42px;
            color: var(--bs-accent);
            margin-bottom: 16px;
        }
        .feature-grid .feature-main h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .feature-grid .feature-main p {
            font-size: 15px;
            color: var(--bs-text-secondary);
            line-height: 1.85;
            margin-bottom: 0;
        }
        .feature-grid .feature-side {
            display: grid;
            grid-template-rows: 1fr 1fr;
            gap: 16px;
        }
        .feature-grid .feature-side .feature-small {
            background: #FFFFFF;
            border: 1px solid var(--bs-border-rgba);
            border-radius: var(--bs-radius-lg);
            padding: 22px 24px;
            display: flex;
            align-items: center;
            gap: 16px;
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
        }
        .feature-grid .feature-side .feature-small:hover {
            transform: translateY(-2px);
            box-shadow: var(--bs-shadow-sm);
            border-color: rgba(200, 255, 0, 0.35);
        }
        .feature-grid .feature-side .feature-small .fs-icon {
            flex-shrink: 0;
            width: 46px;
            height: 46px;
            background: rgba(200, 255, 0, 0.15);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--bs-primary);
        }
        .feature-grid .feature-side .feature-small h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .feature-grid .feature-side .feature-small p {
            font-size: 13px;
            color: var(--bs-text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }
        @media (max-width: 991px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }
        }
        /* ===== 流程区 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step-counter;
        }
        .step-card {
            background: #FFFFFF;
            border: 1px solid var(--bs-border-rgba);
            border-radius: var(--bs-radius-lg);
            padding: 26px 24px 24px;
            position: relative;
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
        }
        .step-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--bs-shadow-sm);
            border-color: rgba(200, 255, 0, 0.4);
        }
        .step-card::before {
            counter-increment: step-counter;
            content: counter(step-counter, decimal-leading-zero);
            font-family: var(--bs-font-num);
            font-size: 44px;
            font-weight: 800;
            color: var(--bs-accent);
            letter-spacing: -2px;
            line-height: 1;
            display: block;
            margin-bottom: 14px;
            opacity: .8;
        }
        .step-card h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 13px;
            color: var(--bs-text-secondary);
            line-height: 1.75;
            margin-bottom: 0;
        }
        @media (max-width: 991px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 575px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }
        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: #FFFFFF;
            border: 1px solid var(--bs-border-rgba);
            border-radius: var(--bs-radius-lg);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color .3s ease, box-shadow .3s ease;
        }
        .faq-item:hover {
            border-color: rgba(200, 255, 0, 0.35);
            box-shadow: var(--bs-shadow-sm);
        }
        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--bs-text);
            transition: background-color .25s ease;
            user-select: none;
            gap: 12px;
        }
        .faq-item .faq-question:hover {
            background: rgba(200, 255, 0, 0.06);
        }
        .faq-item .faq-question i {
            font-size: 14px;
            color: var(--bs-text-muted);
            transition: transform .3s ease, color .3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--bs-primary);
        }
        .faq-item .faq-answer {
            padding: 0 22px;
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease, padding .4s ease;
            font-size: 14px;
            color: var(--bs-text-secondary);
            line-height: 1.85;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 18px;
        }
        /* ===== CTA ===== */
        .cta-section {
            background: var(--bs-primary);
            color: #FFFFFF;
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 14px;
            color: #FFFFFF;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.9;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-bs-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--bs-accent);
            color: var(--bs-primary);
            font-weight: 700;
            font-size: 15px;
            padding: 13px 28px;
            border-radius: var(--bs-radius);
            border: none;
            transition: background-color .25s ease, transform .25s ease;
            letter-spacing: .3px;
        }
        .btn-bs-primary:hover {
            background: #d8ff3a;
            color: var(--bs-primary);
            transform: scale(1.02);
        }
        .btn-bs-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #FFFFFF;
            font-weight: 600;
            font-size: 15px;
            padding: 13px 28px;
            border-radius: var(--bs-radius);
            border: 1px solid rgba(255, 255, 255, .45);
            transition: border-color .25s ease, color .25s ease, transform .25s ease;
            letter-spacing: .3px;
        }
        .btn-bs-ghost:hover {
            border-color: var(--bs-accent);
            color: var(--bs-accent);
            transform: scale(1.02);
        }
        @media (max-width: 575px) {
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 26px;
            }
        }
        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bs-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
            margin-top: 0;
        }
        .site-footer .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }
        .site-footer .footer-brand .brand-logo {
            font-size: 24px;
            margin-bottom: 14px;
        }
        .site-footer .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            max-width: 300px;
            margin-bottom: 0;
        }
        .site-footer .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: .5px;
        }
        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }
        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: color .25s ease, padding-left .25s ease;
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--bs-accent);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding: 20px 0 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-bottom .footer-links {
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
        }
        .site-footer .footer-bottom .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 13px;
            transition: color .25s ease;
        }
        .site-footer .footer-bottom .footer-links a:hover {
            color: var(--bs-accent);
        }
        .site-footer .footer-bottom .icp-info {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
        }
        .site-footer .footer-bottom .icp-info span {
            white-space: nowrap;
        }
        @media (max-width: 991px) {
            .site-footer .footer-top {
                grid-template-columns: 1fr 1fr;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
        }
        @media (max-width: 575px) {
            .site-footer .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding-top: 40px;
            }
            .site-footer .footer-bottom .icp-info {
                flex-direction: column;
                gap: 6px;
            }
        }
        /* ===== 滚动进入动效 ===== */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity .7s ease, transform .7s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (prefers-reduced-motion: reduce) {
            .reveal {
                opacity: 1;
                transform: none;
                transition: none;
            }
            html {
                scroll-behavior: auto;
            }
        }

/* roulang page: category2 */
:root {
  --bs-primary: #1A1A1A;
  --bs-accent: #C8FF00;
  --bs-bg: #F5F4F0;
  --bs-white: #FFFFFF;
  --bs-text: #1A1A1A;
  --bs-text-secondary: #5A5A5A;
  --bs-text-muted: #8A8A8A;
  --bs-border: #E0E0E0;
  --bs-border-rgba: rgba(0, 0, 0, 0.08);
  --bs-radius-sm: 6px;
  --bs-radius: 8px;
  --bs-radius-lg: 12px;
  --bs-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --bs-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.10);
  --bs-font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --bs-font-num: "Inter", "Roboto", sans-serif;
  --bs-section-gap: 96px;
  --bs-card-pad: 28px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--bs-font-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--bs-text);
  background-color: var(--bs-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding-top: 72px;
  padding-bottom: 0;
}

a {
  color: var(--bs-text);
  text-decoration: none;
  transition: color .25s ease, border-color .25s ease, background-color .25s ease, transform .25s ease;
}
a:hover { color: var(--bs-primary); }

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--bs-radius);
}

button, input, select, textarea { font-family: var(--bs-font-sans); font-size: 16px; }

button:focus, a:focus, input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--bs-accent);
  outline-offset: 2px;
}

.container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1050;
  background: var(--bs-primary);
  min-height: 72px;
  display: flex;
  align-items: center;
  border-bottom: 2px solid rgba(200, 255, 0, 0.22);
  transition: box-shadow .3s ease;
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(0, 0, 0, 0.28); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.brand-logo {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}
.brand-logo .logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--bs-accent);
  color: var(--bs-primary);
  font-size: 20px;
  font-weight: 900;
  border-radius: 8px;
  letter-spacing: -0.5px;
}
.brand-logo:hover { color: #FFFFFF; opacity: .92; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.main-nav a {
  color: rgba(255, 255, 255, 0.78);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 6px;
  position: relative;
  white-space: nowrap;
  letter-spacing: .3px;
  transition: color .25s ease, background-color .25s ease;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 2px;
  background: var(--bs-accent);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}
.main-nav a:hover,
.main-nav a.active {
  color: #FFFFFF;
  background: rgba(200, 255, 0, 0.08);
}
.main-nav a:hover::after,
.main-nav a.active::after { transform: scaleX(1); }

.header-cta {
  background: var(--bs-accent);
  color: var(--bs-primary);
  font-weight: 700;
  font-size: 14px;
  padding: 10px 20px;
  border-radius: 8px;
  border: none;
  white-space: nowrap;
  transition: background-color .25s ease, transform .25s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.header-cta:hover { background: #d8ff3a; color: var(--bs-primary); transform: scale(1.02); }

.navbar-toggler {
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #FFFFFF;
  font-size: 20px;
  padding: 6px 12px;
  border-radius: 6px;
  background: transparent;
}
.navbar-toggler:focus {
  outline: 2px solid var(--bs-accent);
  outline-offset: 2px;
}

/* ===== 面包屑 ===== */
.breadcrumb-bar {
  background: var(--bs-white);
  border-bottom: 1px solid var(--bs-border-rgba);
  padding: 14px 0;
  margin-bottom: 0;
}
.breadcrumb-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--bs-text-muted);
  flex-wrap: wrap;
}
.breadcrumb-wrap a {
  color: var(--bs-text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color .25s ease;
}
.breadcrumb-wrap a:hover { color: var(--bs-primary); }
.breadcrumb-wrap .separator { color: #c0c0c0; font-size: 12px; }
.breadcrumb-wrap .current {
  color: var(--bs-primary);
  font-weight: 600;
  background: rgba(200, 255, 0, 0.25);
  padding: 2px 10px;
  border-radius: 20px;
}

/* ===== 分类Hero区 ===== */
.category-hero {
  background: var(--bs-primary);
  color: #FFFFFF;
  padding: 64px 0 72px;
  position: relative;
  overflow: hidden;
}
.category-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.18;
  pointer-events: none;
}
.category-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,26,26,0.88) 0%, rgba(26,26,26,0.55) 100%);
  pointer-events: none;
}
.category-hero .container { position: relative; z-index: 2; }
.category-hero .badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(200, 255, 0, 0.14);
  color: var(--bs-accent);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 30px;
  border: 1px solid rgba(200, 255, 0, 0.35);
  margin-bottom: 18px;
}
.category-hero h1 {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.5px;
  line-height: 1.2;
  margin-bottom: 16px;
  color: #FFFFFF;
}
.category-hero .lead {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.78);
  max-width: 680px;
  margin-bottom: 28px;
}
.category-hero .hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ===== 按钮体系 ===== */
.btn-primary-custom {
  background: var(--bs-accent);
  color: var(--bs-primary);
  font-weight: 700;
  font-size: 15px;
  padding: 12px 26px;
  border-radius: 8px;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background-color .25s ease, transform .25s ease, box-shadow .25s ease;
  cursor: pointer;
}
.btn-primary-custom:hover {
  background: #d8ff3a;
  color: var(--bs-primary);
  transform: scale(1.02);
  box-shadow: 0 4px 20px rgba(200, 255, 0, 0.35);
}
.btn-secondary-custom {
  background: transparent;
  color: #FFFFFF;
  font-weight: 600;
  font-size: 15px;
  padding: 12px 26px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background-color .25s ease, border-color .25s ease, color .25s ease, transform .25s ease;
  cursor: pointer;
}
.btn-secondary-custom:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--bs-accent);
  color: var(--bs-accent);
  transform: scale(1.02);
}
.btn-outline-dark-custom {
  background: transparent;
  color: var(--bs-primary);
  font-weight: 600;
  font-size: 14px;
  padding: 10px 22px;
  border-radius: 8px;
  border: 1px solid var(--bs-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background-color .25s ease, color .25s ease, transform .25s ease;
  cursor: pointer;
}
.btn-outline-dark-custom:hover {
  background: var(--bs-accent);
  color: var(--bs-primary);
  border-color: var(--bs-accent);
  transform: scale(1.02);
}

/* ===== 区块通用 ===== */
.section { padding: var(--bs-section-gap) 0; }
.section-sm { padding: 56px 0; }
.section-head { margin-bottom: 48px; }
.section-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--bs-primary);
  background: rgba(200, 255, 0, 0.28);
  padding: 4px 14px;
  border-radius: 30px;
  margin-bottom: 12px;
  letter-spacing: 1px;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.3px;
  margin-bottom: 12px;
}
.section-head p {
  font-size: 16px;
  color: var(--bs-text-secondary);
  max-width: 620px;
  margin-bottom: 0;
}

/* ===== 统计数字区 ===== */
.stats-panel {
  background: var(--bs-primary);
  border-radius: var(--bs-radius-lg);
  padding: 48px 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: -40px;
  position: relative;
  z-index: 3;
  box-shadow: var(--bs-shadow-lg);
}
.stat-item { text-align: left; }
.stat-item .stat-number {
  font-family: var(--bs-font-num);
  font-size: 42px;
  font-weight: 700;
  color: var(--bs-accent);
  line-height: 1.2;
  margin-bottom: 6px;
  letter-spacing: -1px;
}
.stat-item .stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  font-weight: 500;
}
.stat-item .stat-sub {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
  margin-top: 2px;
}

/* ===== 卖点卡片 ===== */
.insight-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 24px;
}
.insight-card {
  background: var(--bs-white);
  border: 1px solid var(--bs-border-rgba);
  border-radius: var(--bs-radius-lg);
  padding: 32px;
  transition: box-shadow .3s ease, transform .3s ease;
  position: relative;
  overflow: hidden;
}
.insight-card:hover {
  box-shadow: var(--bs-shadow-lg);
  transform: translateY(-2px);
}
.insight-card .card-number {
  font-family: var(--bs-font-num);
  font-size: 36px;
  font-weight: 800;
  color: var(--bs-accent);
  line-height: 1;
  margin-bottom: 16px;
  display: inline-block;
  background: var(--bs-primary);
  padding: 6px 16px;
  border-radius: 8px;
  letter-spacing: 1px;
}
.insight-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.4;
}
.insight-card p {
  font-size: 15px;
  color: var(--bs-text-secondary);
  margin-bottom: 0;
  line-height: 1.7;
}
.insight-card.featured { background: var(--bs-primary); color: #FFFFFF; border-color: var(--bs-primary); }
.insight-card.featured h3 { color: #FFFFFF; }
.insight-card.featured p { color: rgba(255, 255, 255, 0.7); }
.insight-card.featured .card-number { background: var(--bs-accent); color: var(--bs-primary); }

/* ===== 深度内容区 ===== */
.deep-section { background: var(--bs-white); }
.deep-content { max-width: 900px; }
.deep-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 12px;
  color: var(--bs-primary);
}
.deep-content h3:first-child { margin-top: 0; }
.deep-content p {
  font-size: 16px;
  color: var(--bs-text-secondary);
  line-height: 1.9;
  margin-bottom: 16px;
}
.deep-content .highlight-list {
  list-style: none;
  padding: 0;
  margin: 16px 0;
}
.deep-content .highlight-list li {
  padding-left: 24px;
  position: relative;
  font-size: 15px;
  color: var(--bs-text-secondary);
  margin-bottom: 8px;
  line-height: 1.7;
}
.deep-content .highlight-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 10px; height: 10px;
  background: var(--bs-accent);
  border-radius: 2px;
}

/* ===== 数据洞察条目列表 ===== */
.data-list { display: flex; flex-direction: column; gap: 16px; }
.data-item {
  display: flex;
  gap: 20px;
  background: var(--bs-white);
  border: 1px solid var(--bs-border-rgba);
  border-radius: var(--bs-radius-lg);
  padding: 20px 24px;
  transition: box-shadow .3s ease, transform .3s ease;
  align-items: center;
}
.data-item:hover {
  box-shadow: var(--bs-shadow-lg);
  transform: translateY(-2px);
}
.data-item .data-thumb {
  width: 100px;
  height: 70px;
  flex-shrink: 0;
  border-radius: 8px;
  overflow: hidden;
  background: #f0f0f0;
}
.data-item .data-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
}
.data-item .data-body { flex: 1; min-width: 0; }
.data-item .data-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  background: rgba(200, 255, 0, 0.25);
  color: var(--bs-primary);
  padding: 2px 10px;
  border-radius: 20px;
  margin-bottom: 6px;
}
.data-item .data-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 4px;
  line-height: 1.4;
}
.data-item .data-desc {
  font-size: 14px;
  color: var(--bs-text-muted);
  margin-bottom: 0;
  line-height: 1.6;
}
.data-item .data-arrow {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--bs-primary);
  color: var(--bs-accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: background-color .25s ease, transform .25s ease;
}
.data-item:hover .data-arrow { background: var(--bs-accent); color: var(--bs-primary); transform: translateX(4px); }

/* ===== 场景与流程 ===== */
.scenario-flow-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.scenario-box, .flow-box {
  background: var(--bs-white);
  border: 1px solid var(--bs-border-rgba);
  border-radius: var(--bs-radius-lg);
  padding: 32px;
}
.scenario-box h3, .flow-box h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 20px;
}
.scenario-list, .flow-steps {
  list-style: none;
  padding: 0;
  margin: 0;
}
.scenario-list li, .flow-steps li {
  padding: 12px 0;
  border-bottom: 1px solid var(--bs-border-rgba);
  font-size: 15px;
  color: var(--bs-text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.6;
}
.scenario-list li:last-child, .flow-steps li:last-child { border-bottom: none; padding-bottom: 0; }
.scenario-list li i, .flow-steps li .step-icon {
  color: var(--bs-accent);
  font-size: 16px;
  margin-top: 2px;
  flex-shrink: 0;
}
.flow-steps li { counter-increment: step-counter; }
.flow-steps { counter-reset: step-counter; }
.flow-steps li .step-icon {
  background: var(--bs-primary);
  color: var(--bs-accent);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  font-family: var(--bs-font-num);
}

/* ===== FAQ ===== */
.faq-section { background: var(--bs-white); }
.accordion-custom { max-width: 800px; margin: 0 auto; }
.accordion-item-custom {
  background: var(--bs-white);
  border: 1px solid var(--bs-border-rgba);
  border-radius: var(--bs-radius-lg);
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow .3s ease;
}
.accordion-item-custom:hover { box-shadow: var(--bs-shadow-sm); }
.accordion-header-custom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 16px;
  gap: 16px;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  color: var(--bs-primary);
  transition: background-color .25s ease;
}
.accordion-header-custom:hover { background: rgba(200, 255, 0, 0.08); }
.accordion-header-custom .icon-toggle {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--bs-primary);
  color: var(--bs-accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: transform .3s ease;
}
.accordion-item-custom.active .icon-toggle { transform: rotate(180deg); background: var(--bs-accent); color: var(--bs-primary); }
.accordion-body-custom {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--bs-text-secondary);
  line-height: 1.7;
  display: none;
}
.accordion-body-custom.show { display: block; }

/* ===== CTA ===== */
.cta-section {
  background: var(--bs-primary);
  border-radius: var(--bs-radius-lg);
  padding: 56px 40px;
  position: relative;
  overflow: hidden;
  margin: 80px 0 0;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-3.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.12;
  pointer-events: none;
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 {
  font-size: 32px;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}
.cta-section p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  max-width: 560px;
  margin-bottom: 24px;
}
.cta-section .cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ===== 分页 ===== */
.pagination-section { padding: 24px 0 48px; }
.pagination-custom {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.pagination-custom li a,
.pagination-custom li span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 42px;
  padding: 0 10px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--bs-border);
  background: var(--bs-white);
  color: var(--bs-text-secondary);
  transition: background-color .25s ease, border-color .25s ease, color .25s ease;
  cursor: pointer;
}
.pagination-custom li a:hover {
  background: var(--bs-accent);
  border-color: var(--bs-accent);
  color: var(--bs-primary);
}
.pagination-custom li.active span {
  background: var(--bs-primary);
  border-color: var(--bs-primary);
  color: var(--bs-accent);
  font-weight: 700;
}
.pagination-custom li.disabled span {
  color: var(--bs-text-muted);
  background: #f0f0f0;
  border-color: var(--bs-border);
  cursor: not-allowed;
  opacity: 0.6;
}

/* ===== 底部固定转化条 ===== */
.bottom-sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1040;
  background: var(--bs-primary);
  border-top: 2px solid rgba(200, 255, 0, 0.35);
  padding: 14px 0;
  display: flex;
  align-items: center;
  min-height: 64px;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.2);
}
.bottom-sticky-bar .sticky-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
}
.bottom-sticky-bar .sticky-text {
  font-size: 15px;
  font-weight: 600;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  gap: 8px;
}
.bottom-sticky-bar .sticky-text i { color: var(--bs-accent); font-size: 18px; }
.bottom-sticky-bar .sticky-actions { display: flex; gap: 12px; flex-shrink: 0; }
.bottom-sticky-bar .btn-sticky-primary {
  background: var(--bs-accent);
  color: var(--bs-primary);
  font-weight: 700;
  font-size: 14px;
  padding: 10px 22px;
  border-radius: 8px;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background-color .25s ease, transform .25s ease;
}
.bottom-sticky-bar .btn-sticky-primary:hover { background: #d8ff3a; transform: scale(1.03); }
.bottom-sticky-bar .btn-sticky-secondary {
  background: transparent;
  color: #FFFFFF;
  font-weight: 600;
  font-size: 14px;
  padding: 10px 18px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  transition: border-color .25s ease, color .25s ease;
  white-space: nowrap;
}
.bottom-sticky-bar .btn-sticky-secondary:hover { border-color: var(--bs-accent); color: var(--bs-accent); }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bs-primary);
  color: rgba(255, 255, 255, 0.8);
  padding: 56px 0 28px;
  margin-top: 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-brand .brand-logo { margin-bottom: 12px; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
  max-width: 280px;
  margin-bottom: 0;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: 16px;
  letter-spacing: .3px;
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  transition: color .25s ease;
}
.footer-col ul li a:hover { color: var(--bs-accent); }

.footer-bottom {
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-links a {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  transition: color .25s ease;
}
.footer-links a:hover { color: var(--bs-accent); }
.icp-info {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== 响应式 ===== */
@media (min-width: 992px) {
  .main-nav {
    display: flex !important;
    position: static;
    flex-direction: row;
    gap: 8px;
    padding: 0;
    background: transparent;
    border: none;
    box-shadow: none;
    align-items: center;
  }
  .main-nav a { padding: 8px 14px; }
  .navbar-toggler { display: none; }
}

@media (max-width: 991px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: var(--bs-primary);
    flex-direction: column;
    gap: 4px;
    padding: 16px 24px 24px;
    border-bottom: 2px solid rgba(200, 255, 0, 0.25);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
    align-items: stretch;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 16px; font-size: 15px; }
  .category-hero h1 { font-size: 34px; }
  .stats-panel { grid-template-columns: repeat(2, 1fr); gap: 24px; padding: 32px 24px; }
  .stat-item .stat-number { font-size: 32px; }
  .insight-grid { grid-template-columns: 1fr; gap: 16px; }
  .data-item { flex-wrap: wrap; }
  .data-item .data-thumb { width: 100%; height: 140px; }
  .scenario-flow-grid { grid-template-columns: 1fr; gap: 20px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .bottom-sticky-bar .sticky-inner { flex-direction: column; gap: 10px; align-items: stretch; text-align: center; }
  .bottom-sticky-bar .sticky-actions { justify-content: center; }
  .cta-section { padding: 40px 24px; }
  .cta-section h2 { font-size: 26px; }
}

@media (max-width: 767px) {
  body { padding-top: 60px; }
  .site-header { min-height: 60px; }
  .main-nav { top: 60px; }
  .brand-logo { font-size: 22px; }
  .brand-logo .logo-mark { width: 32px; height: 32px; font-size: 17px; }
  .category-hero { padding: 40px 0 48px; }
  .category-hero h1 { font-size: 28px; }
  .category-hero .lead { font-size: 15px; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn-primary-custom,
  .hero-actions .btn-secondary-custom { width: 100%; justify-content: center; }
  .section { padding: 56px 0; }
  .section-sm { padding: 40px 0; }
  .section-head h2 { font-size: 24px; }
  .section-head p { font-size: 15px; }
  .stats-panel { grid-template-columns: 1fr 1fr; gap: 16px; padding: 24px 16px; margin-top: -20px; }
  .stat-item .stat-number { font-size: 28px; }
  .stat-item .stat-label { font-size: 12px; }
  .insight-card { padding: 24px; }
  .data-item { padding: 16px; }
  .data-item .data-title { font-size: 15px; }
  .data-item .data-desc { font-size: 13px; }
  .pagination-custom li a,
  .pagination-custom li span { min-width: 36px; height: 36px; font-size: 13px; }
  .footer-top { grid-template-columns: 1fr; gap: 24px; }
  .footer-brand p { max-width: 100%; }
  .footer-links { gap: 14px; }
  .icp-info { flex-direction: column; gap: 6px; }
  .bottom-sticky-bar { padding: 10px 0; }
  .bottom-sticky-bar .sticky-inner { flex-direction: column; gap: 8px; }
  .bottom-sticky-bar .sticky-text { font-size: 13px; }
  .bottom-sticky-bar .sticky-actions { flex-direction: column; width: 100%; }
  .bottom-sticky-bar .btn-sticky-primary,
  .bottom-sticky-bar .btn-sticky-secondary { width: 100%; justify-content: center; padding: 8px 16px; font-size: 13px; }
  .cta-section h2 { font-size: 22px; }
  .cta-section p { font-size: 14px; }
  .cta-section .cta-actions { flex-direction: column; width: 100%; }
  .cta-section .cta-actions .btn-primary-custom,
  .cta-section .cta-actions .btn-secondary-custom { width: 100%; justify-content: center; }
}

@media (max-width: 520px) {
  .category-hero h1 { font-size: 24px; }
  .category-hero .lead { font-size: 14px; }
  .stats-panel { grid-template-columns: 1fr; gap: 12px; }
  .stat-item { text-align: center; }
  .insight-card .card-number { font-size: 28px; padding: 4px 12px; }
  .insight-card h3 { font-size: 18px; }
  .data-item .data-thumb { height: 100px; }
  .data-item .data-arrow { width: 34px; height: 34px; font-size: 14px; }
  .accordion-header-custom { padding: 16px 18px; font-size: 15px; }
  .accordion-body-custom { padding: 0 18px 16px; }
  .cta-section { padding: 32px 18px; }
  .footer-bottom { gap: 12px; }
}

/* ===== 动效 ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* roulang page: category3 */
:root {
  --bs-primary: #1A1A1A;
  --bs-accent: #C8FF00;
  --bs-bg: #F5F4F0;
  --bs-white: #FFFFFF;
  --bs-text: #1A1A1A;
  --bs-text-secondary: #5A5A5A;
  --bs-text-muted: #8A8A8A;
  --bs-border: #E0E0E0;
  --bs-border-rgba: rgba(0, 0, 0, 0.08);
  --bs-radius-sm: 6px;
  --bs-radius: 8px;
  --bs-radius-lg: 12px;
  --bs-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --bs-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.10);
  --bs-font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --bs-font-num: "Inter", "Roboto", sans-serif;
  --bs-section-gap: 96px;
  --bs-card-pad: 28px;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--bs-font-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--bs-text);
  background-color: var(--bs-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding-top: 72px;
  padding-bottom: 0;
}
a {
  color: var(--bs-text);
  text-decoration: none;
  transition: color .25s ease, border-color .25s ease, background-color .25s ease, transform .25s ease;
}
a:hover {
  color: var(--bs-primary);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--bs-radius);
}
button,
input,
select,
textarea {
  font-family: var(--bs-font-sans);
  font-size: 16px;
}
button:focus,
a:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--bs-accent);
  outline-offset: 2px;
}
.container {
  max-width: 1320px;
  padding-left: 24px;
  padding-right: 24px;
}
/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1050;
  background: var(--bs-primary);
  min-height: 72px;
  display: flex;
  align-items: center;
  border-bottom: 2px solid rgba(200, 255, 0, 0.22);
  transition: box-shadow .3s ease;
}
.site-header.scrolled {
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.28);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.brand-logo {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}
.brand-logo .logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--bs-accent);
  color: var(--bs-primary);
  font-size: 20px;
  font-weight: 900;
  border-radius: 8px;
  letter-spacing: -0.5px;
}
.brand-logo:hover {
  color: #FFFFFF;
  opacity: .92;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.main-nav a {
  color: rgba(255, 255, 255, .78);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 6px;
  position: relative;
  white-space: nowrap;
  letter-spacing: .3px;
  transition: color .25s ease, background-color .25s ease;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: var(--bs-accent);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}
.main-nav a:hover,
.main-nav a.active {
  color: #FFFFFF;
  background: rgba(200, 255, 0, 0.08);
}
.main-nav a:hover::after,
.main-nav a.active::after {
  transform: scaleX(1);
}
.header-cta {
  background: var(--bs-accent);
  color: var(--bs-primary);
  font-weight: 700;
  font-size: 14px;
  padding: 10px 20px;
  border-radius: 8px;
  border: none;
  white-space: nowrap;
  transition: background-color .25s ease, transform .25s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.header-cta:hover {
  background: #d8ff3a;
  color: var(--bs-primary);
  transform: scale(1.02);
}
.navbar-toggler {
  border: 1px solid rgba(255, 255, 255, .35);
  color: #FFFFFF;
  font-size: 20px;
  padding: 6px 12px;
  border-radius: 6px;
  background: transparent;
}
.navbar-toggler:focus {
  outline: 2px solid var(--bs-accent);
  outline-offset: 2px;
}
/* ===== 面包屑 ===== */
.breadcrumb-section {
  background: var(--bs-bg);
  padding: 18px 0;
  border-bottom: 1px solid var(--bs-border-rgba);
}
.breadcrumb-nav {
  font-size: 14px;
  color: var(--bs-text-muted);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}
.breadcrumb-nav a {
  color: var(--bs-text-secondary);
  transition: color .25s ease;
}
.breadcrumb-nav a:hover {
  color: var(--bs-primary);
  text-decoration: underline;
}
.breadcrumb-nav .separator {
  color: var(--bs-text-muted);
  margin: 0 2px;
}
.breadcrumb-nav .current {
  color: var(--bs-primary);
  font-weight: 600;
}
.breadcrumb-nav .back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  color: var(--bs-text-secondary);
  margin-right: 8px;
  transition: color .25s ease;
}
.breadcrumb-nav .back-link:hover {
  color: var(--bs-primary);
}
/* ===== 分类页标题区 ===== */
.category-hero {
  padding: 56px 0 40px;
  background: var(--bs-bg);
  border-bottom: 1px solid var(--bs-border-rgba);
}
.category-hero h1 {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.5px;
  line-height: 1.25;
  color: var(--bs-primary);
  margin-bottom: 16px;
}
.category-hero .category-subtitle {
  font-size: 17px;
  color: var(--bs-text-secondary);
  line-height: 1.9;
  max-width: 780px;
}
.category-hero .category-tag {
  display: inline-block;
  background: var(--bs-accent);
  color: var(--bs-primary);
  font-weight: 700;
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
  letter-spacing: .5px;
}
/* ===== 卡片内容区 ===== */
.content-section {
  padding: 48px 0 40px;
}
.content-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.content-card {
  background: var(--bs-white);
  border-radius: var(--bs-radius-lg);
  border: 1px solid var(--bs-border-rgba);
  overflow: hidden;
  box-shadow: var(--bs-shadow-sm);
  transition: transform .3s ease, box-shadow .3s ease;
  display: flex;
  flex-direction: column;
}
.content-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--bs-shadow-lg);
}
.content-card .card-image {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.content-card .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: transform .5s ease;
}
.content-card:hover .card-image img {
  transform: scale(1.06);
}
.content-card .card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(26, 26, 26, 0.88);
  color: var(--bs-accent);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 20px;
  letter-spacing: .5px;
}
.content-card .card-body {
  padding: 24px 26px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.content-card h3 {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 10px;
  color: var(--bs-primary);
}
.content-card .card-summary {
  font-size: 15px;
  color: var(--bs-text-secondary);
  line-height: 1.8;
  margin-bottom: 18px;
  flex: 1;
}
.content-card .card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--bs-text-muted);
  border-top: 1px solid var(--bs-border-rgba);
  padding-top: 14px;
}
.content-card .card-meta .read-more {
  color: var(--bs-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  transition: color .25s ease;
}
.content-card .card-meta .read-more:hover {
  color: #6e8f00;
}
/* ===== 深色特点区块 ===== */
.training-features {
  background: var(--bs-primary);
  padding: 64px 0;
  margin-bottom: 56px;
}
.training-features .section-title {
  color: #FFFFFF;
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 36px;
  letter-spacing: -0.3px;
}
.training-features .feature-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
}
.training-features .feature-icon {
  width: 42px;
  height: 42px;
  background: var(--bs-accent);
  color: var(--bs-primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.training-features .feature-content h4 {
  color: #FFFFFF;
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 4px;
}
.training-features .feature-content p {
  color: rgba(255, 255, 255, .72);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 0;
}
/* ===== FAQ ===== */
.faq-section {
  padding: 48px 0 64px;
}
.faq-section .faq-title {
  text-align: left;
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 28px;
  color: var(--bs-primary);
}
.faq-item {
  background: var(--bs-white);
  border-radius: var(--bs-radius-lg);
  border: 1px solid var(--bs-border-rgba);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .25s ease;
}
.faq-item:hover {
  border-color: rgba(200, 255, 0, 0.5);
}
.faq-question {
  font-size: 17px;
  font-weight: 600;
  color: var(--bs-primary);
  padding: 18px 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: background-color .25s ease;
}
.faq-question:hover {
  background: rgba(200, 255, 0, 0.06);
}
.faq-question::after {
  content: "+";
  font-weight: 300;
  font-size: 24px;
  color: var(--bs-text-muted);
  flex-shrink: 0;
  transition: transform .3s ease;
}
.faq-item.active .faq-question::after {
  transform: rotate(45deg);
  color: var(--bs-primary);
}
.faq-answer {
  font-size: 15px;
  color: var(--bs-text-secondary);
  line-height: 1.9;
  padding: 0 24px 20px;
  display: none;
}
.faq-item.active .faq-answer {
  display: block;
}
/* ===== 分页 ===== */
.pagination-section {
  padding: 24px 0 56px;
}
.pagination {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
}
.pagination .page-item {
  list-style: none;
}
.pagination .page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--bs-text-secondary);
  background: var(--bs-white);
  border: 1px solid var(--bs-border-rgba);
  transition: all .25s ease;
}
.pagination .page-link:hover {
  background: rgba(200, 255, 0, 0.15);
  color: var(--bs-primary);
  border-color: var(--bs-accent);
}
.pagination .page-item.active .page-link {
  background: var(--bs-primary);
  color: var(--bs-accent);
  border-color: var(--bs-primary);
  font-weight: 700;
}
.pagination .page-item.disabled .page-link {
  opacity: .5;
  pointer-events: none;
}
/* ===== CTA ===== */
.cta-section {
  padding: 48px 0 72px;
}
.cta-box {
  background: var(--bs-primary);
  border-radius: 16px;
  padding: 48px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.cta-box .cta-text h2 {
  color: #FFFFFF;
  font-size: 26px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}
.cta-box .cta-text p {
  color: rgba(255, 255, 255, .72);
  font-size: 15px;
  margin-bottom: 0;
}
.cta-box .cta-btn {
  background: var(--bs-accent);
  color: var(--bs-primary);
  font-weight: 700;
  font-size: 16px;
  padding: 14px 28px;
  border-radius: 8px;
  border: none;
  transition: background-color .25s ease, transform .25s ease;
  white-space: nowrap;
}
.cta-box .cta-btn:hover {
  background: #d8ff3a;
  transform: scale(1.03);
}
/* ===== 页脚 ===== */
.site-footer {
  background: var(--bs-primary);
  color: #FFFFFF;
  padding: 56px 0 0;
  margin-top: 0;
}
.footer-top {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 36px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, .12);
}
.footer-brand .brand-logo {
  font-size: 24px;
  margin-bottom: 14px;
}
.footer-brand .brand-logo .logo-mark {
  width: 34px;
  height: 34px;
  font-size: 18px;
}
.footer-brand p {
  color: rgba(255, 255, 255, .72);
  font-size: 14px;
  line-height: 1.8;
  max-width: 280px;
  margin-bottom: 0;
}
.footer-col h4 {
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-col ul li {
  margin-bottom: 8px;
}
.footer-col ul li a {
  color: rgba(255, 255, 255, .72);
  font-size: 14px;
  transition: color .25s ease;
}
.footer-col ul li a:hover {
  color: var(--bs-accent);
}
.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-links {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-links a {
  color: rgba(255, 255, 255, .72);
  font-size: 13px;
  transition: color .25s ease;
}
.footer-links a:hover {
  color: var(--bs-accent);
}
.icp-info {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  color: rgba(255, 255, 255, .55);
  font-size: 13px;
}
/* ===== 响应式 ===== */
@media (max-width: 1199px) {
  .content-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .footer-top {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }
}
@media (max-width: 991px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bs-primary);
    flex-direction: column;
    gap: 4px;
    padding: 16px 24px 24px;
    border-bottom: 2px solid rgba(200, 255, 0, 0.25);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
    align-items: stretch;
  }
  .main-nav.open {
    display: flex;
  }
  .main-nav a {
    padding: 12px 16px;
    font-size: 16px;
    border-radius: 6px;
  }
  .main-nav a::after {
    display: none;
  }
  .category-hero h1 {
    font-size: 32px;
  }
  .training-features .section-title {
    font-size: 24px;
  }
}
@media (max-width: 767px) {
  body {
    padding-top: 64px;
  }
  .site-header {
    min-height: 64px;
  }
  .brand-logo {
    font-size: 20px;
  }
  .brand-logo .logo-mark {
    width: 30px;
    height: 30px;
    font-size: 16px;
  }
  .category-hero {
    padding: 32px 0 24px;
  }
  .category-hero h1 {
    font-size: 26px;
  }
  .category-hero .category-subtitle {
    font-size: 15px;
  }
  .content-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .content-card .card-body {
    padding: 18px 20px;
  }
  .content-card h3 {
    font-size: 18px;
  }
  .training-features {
    padding: 48px 0;
  }
  .training-features .section-title {
    font-size: 22px;
  }
  .feature-item {
    padding: 12px 0;
  }
  .cta-box {
    padding: 28px 24px;
    flex-direction: column;
    text-align: center;
  }
  .cta-box .cta-btn {
    width: 100%;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .breadcrumb-section {
    padding: 12px 0;
  }
  .breadcrumb-nav {
    font-size: 12px;
    gap: 4px;
  }
}
@media (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .footer-col h4 {
    margin-bottom: 10px;
  }
  .icp-info {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  .pagination .page-link {
    min-width: 34px;
    height: 34px;
    padding: 0 8px;
    font-size: 13px;
  }
}

/* roulang page: category4 */
:root {
            --bs-primary: #1A1A1A;
            --bs-accent: #C8FF00;
            --bs-bg: #F5F4F0;
            --bs-white: #FFFFFF;
            --bs-text: #1A1A1A;
            --bs-text-secondary: #5A5A5A;
            --bs-text-muted: #8A8A8A;
            --bs-border: #E0E0E0;
            --bs-border-rgba: rgba(0, 0, 0, 0.08);
            --bs-radius-sm: 6px;
            --bs-radius: 8px;
            --bs-radius-lg: 12px;
            --bs-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --bs-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.10);
            --bs-font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --bs-font-num: "Inter", "Roboto", sans-serif;
            --bs-section-gap: 96px;
            --bs-card-pad: 28px;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--bs-font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--bs-text);
            background-color: var(--bs-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 72px;
            padding-bottom: 0;
        }

        a {
            color: var(--bs-text);
            text-decoration: none;
            transition: color .25s ease, border-color .25s ease, background-color .25s ease, transform .25s ease;
        }

        a:hover {
            color: var(--bs-primary);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--bs-radius);
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--bs-font-sans);
            font-size: 16px;
        }

        button:focus,
        a:focus,
        input:focus,
        select:focus,
        textarea:focus {
            outline: 2px solid var(--bs-accent);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .container {
            max-width: 1320px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--bs-primary);
            min-height: 72px;
            display: flex;
            align-items: center;
            border-bottom: 2px solid rgba(200, 255, 0, 0.22);
            transition: box-shadow .3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.28);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .brand-logo {
            font-size: 26px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .brand-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--bs-accent);
            color: var(--bs-primary);
            font-size: 20px;
            font-weight: 900;
            border-radius: 8px;
            letter-spacing: -0.5px;
        }

        .brand-logo:hover {
            color: #FFFFFF;
            opacity: .92;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .main-nav a {
            color: rgba(255, 255, 255, .78);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 6px;
            position: relative;
            white-space: nowrap;
            letter-spacing: .3px;
            transition: color .25s ease, background-color .25s ease;
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            background: var(--bs-accent);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .3s ease;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: #FFFFFF;
            background: rgba(200, 255, 0, 0.08);
        }

        .main-nav a:hover::after,
        .main-nav a.active::after {
            transform: scaleX(1);
        }

        .header-cta {
            background: var(--bs-accent);
            color: var(--bs-primary);
            font-weight: 700;
            font-size: 14px;
            padding: 10px 20px;
            border-radius: 8px;
            border: none;
            white-space: nowrap;
            transition: background-color .25s ease, transform .25s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .header-cta:hover {
            background: #d8ff3a;
            color: var(--bs-primary);
            transform: scale(1.02);
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, .35);
            color: #FFFFFF;
            font-size: 20px;
            padding: 6px 12px;
            border-radius: 6px;
            background: transparent;
        }

        .navbar-toggler:focus {
            outline: 2px solid var(--bs-accent);
            outline-offset: 2px;
        }

        @media (max-width: 991px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bs-primary);
                flex-direction: column;
                gap: 4px;
                padding: 16px 24px 24px;
                border-bottom: 2px solid rgba(200, 255, 0, 0.25);
                box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
                align-items: stretch;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                font-size: 16px;
            }
        }

        @media (min-width: 992px) {
            .main-nav {
                display: flex !important;
                position: static;
                background: transparent;
                flex-direction: row;
                gap: 8px;
                padding: 0;
                border-bottom: none;
                box-shadow: none;
            }
            .navbar-toggler {
                display: none;
            }
        }

        /* ===== 面包屑 ===== */
        .page-breadcrumb {
            background: transparent;
            padding: 18px 0 4px;
            font-size: 14px;
            color: var(--bs-text-secondary);
        }

        .page-breadcrumb .breadcrumb-link {
            color: var(--bs-text-secondary);
            font-weight: 500;
        }

        .page-breadcrumb .breadcrumb-link:hover {
            color: var(--bs-primary);
            text-decoration: underline;
        }

        .page-breadcrumb .breadcrumb-current {
            color: var(--bs-primary);
            font-weight: 700;
        }

        .page-breadcrumb .fa-chevron-left {
            margin-right: 6px;
            font-size: 12px;
        }

        /* ===== 内容区标题 ===== */
        .section-title-wrap {
            padding: 32px 0 48px;
        }

        .section-title-wrap h1 {
            font-size: 44px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--bs-primary);
        }

        .section-title-wrap .subtitle {
            font-size: 18px;
            line-height: 1.9;
            color: var(--bs-text-secondary);
            max-width: 820px;
            margin-bottom: 0;
        }

        /* ===== 资讯内容卡片 ===== */
        .news-grid-section {
            padding-bottom: var(--bs-section-gap);
        }

        .news-card {
            background: var(--bs-white);
            border: 1px solid var(--bs-border-rgba);
            border-radius: var(--bs-radius-lg);
            overflow: hidden;
            box-shadow: var(--bs-shadow-sm);
            transition: transform .3s ease, box-shadow .3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--bs-shadow-lg);
        }

        .news-card .card-img-wrap {
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }

        .news-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform .5s ease;
        }

        .news-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }

        .news-card .card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-card .news-tag {
            display: inline-block;
            background: rgba(200, 255, 0, 0.18);
            color: var(--bs-primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 14px;
            letter-spacing: .5px;
        }

        .news-card .card-title {
            font-size: 20px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 12px;
            color: var(--bs-primary);
        }

        .news-card .card-text {
            font-size: 15px;
            color: var(--bs-text-secondary);
            line-height: 1.8;
            margin-bottom: 18px;
            flex: 1;
        }

        .news-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--bs-border-rgba);
            padding-top: 16px;
            font-size: 13px;
            color: var(--bs-text-muted);
        }

        .news-card .card-meta .read-more {
            color: var(--bs-primary);
            font-weight: 700;
            font-size: 13px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .news-card .card-meta .read-more i {
            color: var(--bs-accent);
            filter: brightness(0.7);
            transition: transform .25s ease;
        }

        .news-card .card-meta .read-more:hover i {
            transform: translateX(4px);
            filter: none;
        }

        .news-card .card-meta .date {
            font-weight: 600;
            font-family: var(--bs-font-num);
        }

        /* ===== 资讯分类标签条 ===== */
        .news-filter-bar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 32px;
        }

        .news-filter-bar .filter-label {
            font-size: 14px;
            font-weight: 700;
            color: var(--bs-text-secondary);
            margin-right: 4px;
        }

        .news-filter-bar .filter-btn {
            background: var(--bs-white);
            border: 1px solid var(--bs-border);
            color: var(--bs-text-secondary);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: 22px;
            transition: all .25s ease;
            cursor: pointer;
        }

        .news-filter-bar .filter-btn:hover,
        .news-filter-bar .filter-btn.active {
            background: var(--bs-primary);
            color: #FFFFFF;
            border-color: var(--bs-primary);
        }

        .news-filter-bar .filter-btn.active {
            background: var(--bs-primary);
            color: var(--bs-accent);
        }

        /* ===== 深度资讯区 ===== */
        .insight-section {
            background: var(--bs-primary);
            padding: 80px 0;
            margin-top: 0;
        }

        .insight-section .insight-title {
            color: #FFFFFF;
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.3px;
            margin-bottom: 16px;
        }

        .insight-section .insight-desc {
            color: rgba(255, 255, 255, 0.72);
            font-size: 16px;
            line-height: 1.9;
            margin-bottom: 40px;
            max-width: 720px;
        }

        .insight-block {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--bs-radius-lg);
            padding: 28px;
            margin-bottom: 24px;
            transition: background-color .3s ease, border-color .3s ease;
        }

        .insight-block:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(200, 255, 0, 0.3);
        }

        .insight-block h3 {
            color: var(--bs-accent);
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.2px;
        }

        .insight-block p {
            color: rgba(255, 255, 255, 0.78);
            font-size: 15px;
            line-height: 1.9;
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .news-cta-section {
            background: var(--bs-bg);
            padding: 80px 0;
        }

        .news-cta-box {
            background: var(--bs-white);
            border: 1px solid var(--bs-border-rgba);
            border-radius: var(--bs-radius-lg);
            padding: 48px 40px;
            box-shadow: var(--bs-shadow-sm);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .news-cta-box .cta-text {
            flex: 1;
            min-width: 280px;
        }

        .news-cta-box .cta-text h2 {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -0.3px;
            margin-bottom: 12px;
            color: var(--bs-primary);
        }

        .news-cta-box .cta-text p {
            font-size: 16px;
            color: var(--bs-text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

        .news-cta-box .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .btn-primary-accent {
            background: var(--bs-accent);
            color: var(--bs-primary);
            border: none;
            font-weight: 700;
            font-size: 16px;
            padding: 14px 28px;
            border-radius: 8px;
            transition: transform .25s ease, background-color .25s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary-accent:hover {
            background: #d8ff3a;
            color: var(--bs-primary);
            transform: scale(1.02);
        }

        .btn-secondary-outline {
            background: transparent;
            color: var(--bs-primary);
            border: 1px solid var(--bs-primary);
            font-weight: 600;
            font-size: 16px;
            padding: 14px 28px;
            border-radius: 8px;
            transition: background-color .25s ease, color .25s ease, transform .25s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-secondary-outline:hover {
            background: var(--bs-primary);
            color: var(--bs-accent);
            transform: scale(1.02);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bs-bg);
            padding: 0 0 var(--bs-section-gap);
        }

        .faq-section .section-title {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.3px;
            margin-bottom: 40px;
            color: var(--bs-primary);
        }

        .faq-item {
            background: var(--bs-white);
            border: 1px solid var(--bs-border-rgba);
            border-radius: var(--bs-radius-lg);
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: var(--bs-shadow-sm);
            transition: box-shadow .3s ease;
        }

        .faq-item:hover {
            box-shadow: var(--bs-shadow-lg);
        }

        .faq-item .faq-question {
            padding: 22px 28px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-weight: 700;
            font-size: 17px;
            color: var(--bs-primary);
            transition: color .25s ease;
            user-select: none;
        }

        .faq-item .faq-question:hover {
            color: var(--bs-primary);
        }

        .faq-item .faq-question .faq-icon {
            color: var(--bs-accent);
            filter: brightness(0.8);
            font-size: 18px;
            flex-shrink: 0;
            transition: transform .3s ease;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            filter: none;
        }

        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .35s ease;
            padding: 0 28px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 28px 24px;
        }

        .faq-item .faq-answer p {
            font-size: 15px;
            color: var(--bs-text-secondary);
            line-height: 1.9;
            margin-bottom: 0;
        }

        /* ===== 分页 ===== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            margin-top: 48px;
        }

        .pagination-wrap .pagination {
            gap: 6px;
        }

        .pagination-wrap .page-link {
            border: 1px solid var(--bs-border);
            color: var(--bs-text-secondary);
            font-weight: 500;
            font-size: 14px;
            padding: 10px 16px;
            border-radius: 8px;
            transition: all .25s ease;
            background: var(--bs-white);
        }

        .pagination-wrap .page-link:hover {
            background: var(--bs-primary);
            color: var(--bs-accent);
            border-color: var(--bs-primary);
        }

        .pagination-wrap .page-link.active {
            background: var(--bs-primary);
            color: var(--bs-accent);
            border-color: var(--bs-primary);
            font-weight: 700;
        }

        .pagination-wrap .page-link:focus {
            box-shadow: none;
            outline: 2px solid var(--bs-accent);
            outline-offset: 2px;
        }

        /* ===== 底部转化条 ===== */
        .bottom-sticky-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1040;
            background: var(--bs-primary);
            padding: 14px 0;
            border-top: 2px solid rgba(200, 255, 0, 0.3);
            box-shadow: 0 -6px 24px rgba(0, 0, 0, 0.18);
        }

        .bottom-sticky-cta .sticky-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }

        .bottom-sticky-cta .sticky-text {
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .bottom-sticky-cta .sticky-text i {
            color: var(--bs-accent);
            font-size: 20px;
        }

        .bottom-sticky-cta .sticky-btn {
            background: var(--bs-accent);
            color: var(--bs-primary);
            border: none;
            font-weight: 700;
            font-size: 15px;
            padding: 12px 26px;
            border-radius: 8px;
            transition: transform .25s ease, background-color .25s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .bottom-sticky-cta .sticky-btn:hover {
            background: #d8ff3a;
            transform: scale(1.03);
        }

        @media (max-width: 575px) {
            .bottom-sticky-cta {
                padding: 10px 0;
            }
            .bottom-sticky-cta .sticky-text {
                font-size: 14px;
            }
            .bottom-sticky-cta .sticky-btn {
                font-size: 14px;
                padding: 10px 20px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bs-primary);
            color: rgba(255, 255, 255, 0.78);
            padding: 72px 0 0;
            margin-bottom: 64px;
        }

        .site-footer .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .site-footer .footer-brand p {
            font-size: 15px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 16px;
            max-width: 320px;
        }

        .site-footer .footer-brand .brand-logo {
            color: #FFFFFF;
        }

        .site-footer .footer-brand .brand-logo:hover {
            color: #FFFFFF;
            opacity: .9;
        }

        .site-footer .footer-col h4 {
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: .3px;
        }

        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }

        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: color .25s ease;
        }

        .site-footer .footer-col ul li a:hover {
            color: var(--bs-accent);
        }

        .site-footer .footer-bottom {
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        .site-footer .footer-bottom .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .site-footer .footer-bottom .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 13px;
            transition: color .25s ease;
        }

        .site-footer .footer-bottom .footer-links a:hover {
            color: var(--bs-accent);
        }

        .site-footer .footer-bottom .icp-info {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            color: rgba(255, 255, 255, 0.5);
            font-size: 13px;
        }

        @media (max-width: 991px) {
            .site-footer .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 575px) {
            .site-footer .footer-top {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ===== 通用动画 ===== */
        .fade-in-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity .5s ease, transform .5s ease;
        }

        .fade-in-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        @media (prefers-reduced-motion: reduce) {
            .fade-in-up {
                opacity: 1;
                transform: none;
                transition: none;
            }
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            .section-title-wrap h1 {
                font-size: 34px;
            }
            .section-title-wrap .subtitle {
                font-size: 16px;
            }
            .news-card .card-title {
                font-size: 18px;
            }
            .insight-section {
                padding: 56px 0;
            }
            .insight-block {
                padding: 22px;
            }
            .news-cta-box {
                padding: 32px 24px;
            }
        }

        @media (max-width: 575px) {
            body {
                padding-top: 64px;
            }
            .site-header {
                min-height: 64px;
            }
            .main-nav {
                top: 64px;
            }
            .section-title-wrap {
                padding: 20px 0 32px;
            }
            .section-title-wrap h1 {
                font-size: 28px;
            }
            .section-title-wrap .subtitle {
                font-size: 15px;
            }
            .news-filter-bar {
                gap: 8px;
            }
            .news-filter-bar .filter-btn {
                font-size: 13px;
                padding: 6px 14px;
            }
            .news-cta-box {
                flex-direction: column;
                align-items: flex-start;
            }
            .news-cta-box .cta-actions {
                width: 100%;
            }
            .news-cta-box .cta-actions a {
                flex: 1;
                justify-content: center;
            }
            .faq-item .faq-question {
                padding: 18px 20px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                padding: 0 20px;
            }
            .faq-item.open .faq-answer {
                padding: 0 20px 20px;
            }
        }

/* roulang page: category5 */
:root {
            --bs-primary: #1A1A1A;
            --bs-accent: #C8FF00;
            --bs-bg: #F5F4F0;
            --bs-white: #FFFFFF;
            --bs-text: #1A1A1A;
            --bs-text-secondary: #5A5A5A;
            --bs-text-muted: #8A8A8A;
            --bs-border: #E0E0E0;
            --bs-border-rgba: rgba(0, 0, 0, 0.08);
            --bs-radius-sm: 6px;
            --bs-radius: 8px;
            --bs-radius-lg: 12px;
            --bs-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --bs-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.10);
            --bs-font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --bs-font-num: "Inter", "Roboto", sans-serif;
            --bs-section-gap: 96px;
            --bs-card-pad: 28px;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--bs-font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--bs-text);
            background-color: var(--bs-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 72px;
            padding-bottom: 0;
        }

        a {
            color: var(--bs-text);
            text-decoration: none;
            transition: color .25s ease, border-color .25s ease, background-color .25s ease, transform .25s ease;
        }
        a:hover {
            color: var(--bs-primary);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--bs-radius);
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--bs-font-sans);
            font-size: 16px;
        }

        button:focus,
        a:focus,
        input:focus,
        select:focus,
        textarea:focus {
            outline: 2px solid var(--bs-accent);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (min-width: 1400px) {
            .container {
                max-width: 1320px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--bs-primary);
            min-height: 72px;
            display: flex;
            align-items: center;
            border-bottom: 2px solid rgba(200, 255, 0, 0.22);
            transition: box-shadow .3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.28);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .brand-logo {
            font-size: 26px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }
        .brand-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--bs-accent);
            color: var(--bs-primary);
            font-size: 20px;
            font-weight: 900;
            border-radius: 8px;
            letter-spacing: -0.5px;
        }
        .brand-logo:hover {
            color: #FFFFFF;
            opacity: .92;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: rgba(255, 255, 255, 0.78);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 6px;
            position: relative;
            white-space: nowrap;
            letter-spacing: .3px;
            transition: color .25s ease, background-color .25s ease;
        }
        .main-nav a::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            background: var(--bs-accent);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .3s ease;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: #FFFFFF;
            background: rgba(200, 255, 0, 0.08);
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            transform: scaleX(1);
        }
        .header-cta {
            background: var(--bs-accent);
            color: var(--bs-primary);
            font-weight: 700;
            font-size: 14px;
            padding: 10px 20px;
            border-radius: 8px;
            border: none;
            white-space: nowrap;
            transition: background-color .25s ease, transform .25s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .header-cta:hover {
            background: #d8ff3a;
            color: var(--bs-primary);
            transform: scale(1.02);
        }
        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: #FFFFFF;
            font-size: 20px;
            padding: 6px 12px;
            border-radius: 6px;
            background: transparent;
        }
        .navbar-toggler:focus {
            outline: 2px solid var(--bs-accent);
            outline-offset: 2px;
        }
        @media (max-width: 991.98px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bs-primary);
                flex-direction: column;
                gap: 4px;
                padding: 16px 24px 24px;
                border-bottom: 2px solid rgba(200, 255, 0, 0.25);
                box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
                align-items: stretch;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                font-size: 16px;
            }
            .main-nav a::after {
                display: none;
            }
        }
        @media (min-width: 992px) {
            .navbar-toggler {
                display: none;
            }
            .main-nav {
                display: flex !important;
                position: static;
                flex-direction: row;
                background: transparent;
                padding: 0;
                border-bottom: none;
                box-shadow: none;
                align-items: center;
            }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-section {
            background: var(--bs-white);
            border-bottom: 1px solid var(--bs-border);
            padding: 14px 0;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--bs-text-muted);
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .breadcrumb-nav li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb-nav li a {
            color: var(--bs-text-secondary);
            font-weight: 500;
            transition: color .2s ease;
        }
        .breadcrumb-nav li a:hover {
            color: var(--bs-primary);
        }
        .breadcrumb-nav li .sep {
            color: var(--bs-text-muted);
        }
        .breadcrumb-nav li.active {
            color: var(--bs-primary);
            font-weight: 700;
        }

        /* ===== 分类标题区 ===== */
        .category-hero {
            background: var(--bs-primary);
            padding: 64px 0 56px;
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(26,26,26,0.95) 0%, rgba(26,26,26,0.82) 45%, rgba(26,26,26,0.6) 100%);
            z-index: 1;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero h1 {
            font-size: 42px;
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.2;
            color: #FFFFFF;
            margin-bottom: 16px;
        }
        .category-hero h1 .accent {
            color: var(--bs-accent);
        }
        .category-hero .subtitle {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .category-hero .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .btn-accent {
            background: var(--bs-accent);
            color: var(--bs-primary);
            font-weight: 700;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 8px;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: background-color .25s ease, transform .25s ease;
        }
        .btn-accent:hover {
            background: #d8ff3a;
            color: var(--bs-primary);
            transform: scale(1.02);
        }
        .btn-ghost-light {
            background: transparent;
            color: #FFFFFF;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.4);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: border-color .25s ease, color .25s ease, background-color .25s ease;
        }
        .btn-ghost-light:hover {
            border-color: var(--bs-accent);
            color: var(--bs-accent);
            background: rgba(200, 255, 0, 0.06);
        }

        /* ===== 通用按钮 ===== */
        .btn-outline-custom {
            background: transparent;
            color: var(--bs-primary);
            font-weight: 600;
            font-size: 14px;
            padding: 10px 22px;
            border-radius: 8px;
            border: 1px solid var(--bs-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: background-color .25s ease, color .25s ease, transform .25s ease;
        }
        .btn-outline-custom:hover {
            background: var(--bs-accent);
            color: var(--bs-primary);
            border-color: var(--bs-accent);
            transform: scale(1.02);
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--bs-section-gap) 0;
        }
        @media (max-width: 767.98px) {
            .section {
                padding: 56px 0;
            }
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--bs-text-muted);
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.3;
            color: var(--bs-text);
            margin-bottom: 16px;
        }
        .section-title .accent {
            color: var(--bs-primary);
            background: linear-gradient(180deg, transparent 65%, var(--bs-accent) 65%);
            padding: 0 4px;
        }
        .section-lead {
            font-size: 16px;
            color: var(--bs-text-secondary);
            max-width: 720px;
            line-height: 1.85;
            margin-bottom: 40px;
        }

        /* ===== 会员权益卡片 ===== */
        .benefit-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width: 991.98px) {
            .benefit-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 575.98px) {
            .benefit-grid {
                grid-template-columns: 1fr;
            }
        }
        .benefit-card {
            background: var(--bs-white);
            border: 1px solid var(--bs-border-rgba);
            border-radius: var(--bs-radius-lg);
            padding: 28px;
            transition: box-shadow .3s ease, transform .3s ease;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .benefit-card:hover {
            box-shadow: var(--bs-shadow-lg);
            transform: translateY(-2px);
        }
        .benefit-icon {
            width: 48px;
            height: 48px;
            background: rgba(200, 255, 0, 0.12);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--bs-primary);
        }
        .benefit-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0;
            color: var(--bs-text);
        }
        .benefit-card p {
            font-size: 15px;
            color: var(--bs-text-secondary);
            line-height: 1.75;
            margin: 0;
        }

        /* ===== 会员等级 ===== */
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width: 991.98px) {
            .tier-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }
        .tier-card {
            background: var(--bs-white);
            border: 1px solid var(--bs-border-rgba);
            border-radius: var(--bs-radius-lg);
            padding: 32px 28px;
            transition: box-shadow .3s ease, transform .3s ease;
            position: relative;
        }
        .tier-card:hover {
            box-shadow: var(--bs-shadow-lg);
            transform: translateY(-2px);
        }
        .tier-card.featured {
            border-color: var(--bs-accent);
            background: linear-gradient(180deg, #FFFFFF 0%, #FAFCE8 100%);
        }
        .tier-badge {
            position: absolute;
            top: -12px;
            right: 24px;
            background: var(--bs-accent);
            color: var(--bs-primary);
            font-size: 12px;
            font-weight: 800;
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: .5px;
        }
        .tier-name {
            font-size: 20px;
            font-weight: 800;
            color: var(--bs-text);
            margin-bottom: 4px;
        }
        .tier-price {
            font-size: 13px;
            color: var(--bs-text-muted);
            margin-bottom: 18px;
        }
        .tier-features {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .tier-features li {
            font-size: 14px;
            color: var(--bs-text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.6;
        }
        .tier-features li i {
            color: var(--bs-primary);
            font-size: 14px;
            margin-top: 3px;
            flex-shrink: 0;
        }
        .tier-features li i.fa-circle-check {
            color: var(--bs-accent);
            -webkit-text-stroke: 1px var(--bs-primary);
        }

        /* ===== 登录表单区域 ===== */
        .login-panel {
            background: var(--bs-white);
            border: 1px solid var(--bs-border-rgba);
            border-radius: var(--bs-radius-lg);
            padding: 36px 32px;
            box-shadow: var(--bs-shadow-sm);
        }
        .login-panel h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .login-panel .login-hint {
            font-size: 14px;
            color: var(--bs-text-muted);
            margin-bottom: 24px;
        }
        .form-control-custom {
            width: 100%;
            padding: 12px 16px;
            font-size: 15px;
            border: 1px solid var(--bs-border);
            border-radius: var(--bs-radius);
            background: var(--bs-bg);
            color: var(--bs-text);
            transition: border-color .25s ease, box-shadow .25s ease;
        }
        .form-control-custom:focus {
            border-color: var(--bs-primary);
            box-shadow: 0 0 0 3px rgba(200, 255, 0, 0.25);
            outline: none;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--bs-text);
        }
        .btn-submit {
            width: 100%;
            background: var(--bs-primary);
            color: var(--bs-accent);
            font-weight: 700;
            font-size: 15px;
            padding: 13px 24px;
            border-radius: 8px;
            border: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: background-color .25s ease, transform .25s ease;
        }
        .btn-submit:hover {
            background: #2a2a2a;
            transform: scale(1.01);
        }
        .login-divider {
            display: flex;
            align-items: center;
            gap: 12px;
            margin: 20px 0;
            color: var(--bs-text-muted);
            font-size: 13px;
        }
        .login-divider::before,
        .login-divider::after {
            content: "";
            flex: 1;
            height: 1px;
            background: var(--bs-border);
        }
        .social-login {
            display: flex;
            gap: 10px;
        }
        .social-btn {
            flex: 1;
            padding: 10px 16px;
            border: 1px solid var(--bs-border);
            border-radius: 8px;
            background: var(--bs-white);
            font-size: 14px;
            font-weight: 600;
            color: var(--bs-text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            transition: border-color .25s ease, background-color .25s ease;
        }
        .social-btn:hover {
            border-color: var(--bs-primary);
            background: var(--bs-bg);
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        @media (max-width: 991.98px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 575.98px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }
        .step-item {
            background: var(--bs-white);
            border: 1px solid var(--bs-border-rgba);
            border-radius: var(--bs-radius-lg);
            padding: 28px 24px;
            text-align: center;
            transition: box-shadow .3s ease, transform .3s ease;
        }
        .step-item:hover {
            box-shadow: var(--bs-shadow-lg);
            transform: translateY(-2px);
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background: var(--bs-accent);
            color: var(--bs-primary);
            font-size: 20px;
            font-weight: 800;
            border-radius: 50%;
            margin-bottom: 14px;
        }
        .step-item h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--bs-text-secondary);
            line-height: 1.65;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 840px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bs-white);
            border: 1px solid var(--bs-border-rgba);
            border-radius: var(--bs-radius-lg);
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow .3s ease;
        }
        .faq-item:hover {
            box-shadow: var(--bs-shadow-sm);
        }
        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 16px;
            font-weight: 700;
            color: var(--bs-text);
            cursor: pointer;
            text-align: left;
            transition: background-color .25s ease;
        }
        .faq-question:hover {
            background: rgba(0, 0, 0, 0.02);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            background: rgba(200, 255, 0, 0.15);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--bs-primary);
            transition: transform .3s ease;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .35s ease;
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--bs-text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        /* ===== 分页 ===== */
        .pagination-section {
            padding: 16px 0 48px;
        }
        .pagination-custom {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            list-style: none;
            padding: 0;
            margin: 0;
            flex-wrap: wrap;
        }
        .pagination-custom .page-item .page-link {
            background: var(--bs-white);
            border: 1px solid var(--bs-border);
            color: var(--bs-text);
            font-size: 14px;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: 6px;
            transition: background-color .25s ease, color .25s ease, border-color .25s ease;
            display: block;
        }
        .pagination-custom .page-item .page-link:hover {
            background: var(--bs-accent);
            color: var(--bs-primary);
            border-color: var(--bs-accent);
        }
        .pagination-custom .page-item.active .page-link {
            background: var(--bs-primary);
            color: var(--bs-accent);
            border-color: var(--bs-primary);
        }
        .pagination-custom .page-item.disabled .page-link {
            background: var(--bs-bg);
            color: var(--bs-text-muted);
            border-color: var(--bs-border);
            pointer-events: none;
        }

        /* ===== 深色CTA区块 ===== */
        .cta-section-dark {
            background: var(--bs-primary);
            padding: 72px 0;
            text-align: center;
        }
        .cta-section-dark h2 {
            font-size: 30px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }
        .cta-section-dark p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bs-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 28px;
            margin-top: 0;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        @media (max-width: 991.98px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 575.98px) {
            .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }
        .footer-brand .brand-logo {
            font-size: 22px;
            margin-bottom: 12px;
        }
        .footer-brand .brand-logo .logo-mark {
            width: 32px;
            height: 32px;
            font-size: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            max-width: 320px;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: .5px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color .25s ease;
        }
        .footer-col ul li a:hover {
            color: var(--bs-accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            transition: color .25s ease;
        }
        .footer-links a:hover {
            color: var(--bs-accent);
        }
        .icp-info {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }
        .icp-info span {
            white-space: nowrap;
        }

        /* ===== 响应式补充 ===== */
        @media (max-width: 767.98px) {
            .category-hero {
                padding: 44px 0 40px;
            }
            .category-hero h1 {
                font-size: 32px;
            }
            .category-hero .subtitle {
                font-size: 15px;
            }
            .section-title {
                font-size: 26px;
            }
            .benefit-grid,
            .tier-grid {
                gap: 16px;
            }
            .benefit-card,
            .tier-card,
            .login-panel {
                padding: 22px 18px;
            }
        }

        /* ===== 滚动动画 ===== */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity .6s ease, transform .6s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }