/* roulang page: index */
:root {
            --primary: #1E5EFF;
            --accent: #00E5A0;
            --cyanlight: #00C8FF;
            --bgdark: #0A0F1E;
            --bgdeep: #0E1730;
            --text-main: #F0F4FF;
            --text-sub: #A7B4D4;
            --text-weak: #6C7A9E;
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(255, 255, 255, 0.12);
            --glass-border-hover: rgba(255, 255, 255, 0.25);
            --radius-card: 16px;
            --radius-btn: 12px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 24px rgba(30, 94, 255, 0.35);
            --font-stack: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            background: linear-gradient(180deg, var(--bgdark) 0%, var(--bgdeep) 100%);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--text-main);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        a:hover {
            color: var(--accent);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            font-family: var(--font-stack);
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

        input {
            font-family: var(--font-stack);
            border: none;
            outline: none;
            background: none;
            color: var(--text-main);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-wide {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-padding {
            padding-top: 80px;
            padding-bottom: 80px;
        }

        @media (max-width: 768px) {
            .section-padding {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .container,
            .container-wide {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* 头部导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 15, 30, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

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

        .logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 1px;
            background: linear-gradient(90deg, #fff, #B8D0FF);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }

        .logo-sub {
            font-size: 11px;
            letter-spacing: 3px;
            color: var(--text-weak);
            text-transform: uppercase;
            display: block;
            margin-top: 2px;
        }

        @media (max-width: 576px) {
            .logo-sub {
                display: none;
            }
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 999px;
            padding: 6px 16px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            width: 220px;
        }

        .search-box:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.2);
        }

        .search-box input {
            flex: 1;
            font-size: 14px;
            padding: 4px 8px;
            background: transparent;
        }

        .search-box input::placeholder {
            color: var(--text-weak);
        }

        .search-box i {
            color: var(--text-weak);
            font-size: 14px;
        }

        @media (max-width: 768px) {
            .search-box {
                display: none;
            }
        }

        .btn-cta {
            background: linear-gradient(90deg, var(--primary), var(--cyanlight));
            color: #fff;
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            font-weight: 600;
            font-size: 14px;
            transition: all 0.2s ease;
            box-shadow: 0 0 16px rgba(30, 94, 255, 0.3);
            white-space: nowrap;
        }

        .btn-cta:hover {
            filter: brightness(1.15);
            box-shadow: 0 0 26px rgba(30, 94, 255, 0.5);
            color: #fff;
            transform: translateY(-2px);
        }

        /* 导航频道 */
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 8px 0;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: rgba(255,255,255,0.1) transparent;
        }

        .nav-tabs::-webkit-scrollbar {
            height: 4px;
        }

        .nav-tabs::-webkit-scrollbar-track {
            background: transparent;
        }

        .nav-tabs::-webkit-scrollbar-thumb {
            background: rgba(255,255,255,0.1);
            border-radius: 4px;
        }

        .nav-tab {
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-sub);
            white-space: nowrap;
            transition: all 0.2s ease;
            position: relative;
            border: 1px solid transparent;
        }

        .nav-tab:hover {
            color: var(--text-main);
            border-color: rgba(255,255,255,0.25);
            background: rgba(255,255,255,0.04);
        }

        .nav-tab.active {
            color: var(--text-main);
            background: rgba(30, 94, 255, 0.2);
            border-color: rgba(30, 94, 255, 0.3);
            font-weight: 600;
        }

        .nav-tab.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--cyanlight));
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(30, 94, 255, 0.6);
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            font-size: 20px;
            color: var(--text-sub);
            padding: 8px;
        }

        @media (max-width: 768px) {
            .header-top .container {
                gap: 12px;
            }
            .menu-toggle {
                display: block;
            }
            .btn-cta {
                padding: 8px 16px;
                font-size: 13px;
            }
            .nav-tabs {
                display: flex;
                flex-wrap: nowrap;
                overflow-x: auto;
            }
            .nav-tab {
                padding: 6px 12px;
                font-size: 13px;
            }
        }

        /* Hero 区域 */
        .hero-section {
            position: relative;
            min-height: 600px;
            display: flex;
            align-items: center;
            background: linear-gradient(180deg, rgba(10, 15, 30, 0.6) 0%, rgba(10, 15, 30, 0.3) 50%, var(--bgdark) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(30, 94, 255, 0.15) 0%, transparent 60%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            padding: 60px 0;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            color: var(--accent);
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }

        .hero-badge i {
            font-size: 14px;
        }

        .hero-title {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: 1px;
            margin-bottom: 20px;
            background: linear-gradient(90deg, #FFFFFF 40%, #B8D0FF 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: 18px;
            color: var(--text-sub);
            line-height: 1.75;
            margin-bottom: 32px;
            max-width: 560px;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: linear-gradient(90deg, var(--primary), var(--cyanlight));
            color: #fff;
            border-radius: var(--radius-btn);
            padding: 14px 36px;
            font-weight: 600;
            font-size: 16px;
            transition: all 0.2s ease;
            box-shadow: 0 0 20px rgba(30, 94, 255, 0.4);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary:hover {
            filter: brightness(1.15);
            box-shadow: 0 0 32px rgba(30, 94, 255, 0.6);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-glass {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-main);
            border-radius: var(--radius-btn);
            padding: 14px 36px;
            font-weight: 500;
            font-size: 16px;
            backdrop-filter: blur(8px);
            transition: all 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-glass:hover {
            border-color: rgba(255, 255, 255, 0.35);
            background: rgba(255, 255, 255, 0.12);
            color: var(--text-main);
            transform: translateY(-2px);
        }

        .hero-trust {
            display: flex;
            gap: 24px;
            margin-top: 48px;
            flex-wrap: wrap;
            align-items: center;
        }

        .hero-trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-sub);
        }

        .hero-trust-item i {
            color: var(--accent);
            font-size: 14px;
        }

        @media (max-width: 768px) {
            .hero-section {
                min-height: 480px;
                padding: 40px 0;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-buttons {
                flex-direction: column;
                width: 100%;
            }
            .btn-primary,
            .btn-glass {
                width: 100%;
                justify-content: center;
            }
            .hero-trust {
                gap: 12px 20px;
                margin-top: 32px;
            }
        }

        /* 痛点深化区 */
        .pain-section {
            background: linear-gradient(180deg, var(--bgdark), rgba(14, 23, 48, 0.5));
        }

        .pain-layout {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 60px;
            align-items: center;
        }

        .pain-left {
            padding: 20px 0;
        }

        .section-label {
            display: inline-block;
            background: rgba(30, 94, 255, 0.15);
            border: 1px solid rgba(30, 94, 255, 0.2);
            color: #B8D0FF;
            font-size: 13px;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 20px;
        }

        .section-desc {
            color: var(--text-sub);
            font-size: 16px;
            line-height: 1.75;
        }

        .pain-right {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .pain-card {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            backdrop-filter: blur(12px);
            transition: all 0.2s ease;
        }

        .pain-card:hover {
            border-color: var(--glass-border-hover);
            transform: translateX(6px);
            box-shadow: var(--shadow-card);
        }

        .pain-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(30, 94, 255, 0.15);
            border: 1px solid rgba(30, 94, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 18px;
            color: var(--cyanlight);
        }

        .pain-text h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .pain-text p {
            font-size: 14px;
            color: var(--text-sub);
            margin: 0;
        }

        @media (max-width: 768px) {
            .pain-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .section-title {
                font-size: 24px;
            }
            .pain-card {
                padding: 20px;
            }
        }

        /* 解决方案区 */
        .solution-section {
            background: linear-gradient(180deg, rgba(14, 23, 48, 0.5), var(--bgdark));
            position: relative;
        }

        .solution-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .solution-image {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--glass-border);
        }

        .solution-image img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .solution-image::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 140px;
            background: linear-gradient(180deg, transparent, rgba(10, 15, 30, 0.8));
            pointer-events: none;
        }

        .solution-data-panel {
            position: absolute;
            bottom: 20px;
            left: 20px;
            right: 20px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            padding: 16px 20px;
            backdrop-filter: blur(16px);
            display: flex;
            justify-content: space-around;
        }

        .solution-data-item {
            text-align: center;
        }

        .solution-data-item .number {
            font-size: 28px;
            font-weight: 700;
            color: var(--accent);
            display: block;
        }

        .solution-data-item .label {
            font-size: 12px;
            color: var(--text-sub);
            margin-top: 2px;
        }

        .solution-right {
            padding: 20px 0;
        }

        .ability-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-top: 28px;
        }

        .ability-item {
            display: flex;
            gap: 20px;
            padding: 16px;
            border-radius: 12px;
            transition: background 0.2s ease;
        }

        .ability-item:hover {
            background: rgba(255, 255, 255, 0.04);
        }

        .ability-num {
            font-size: 36px;
            font-weight: 700;
            color: transparent;
            background: linear-gradient(135deg, var(--primary), var(--cyanlight));
            -webkit-background-clip: text;
            background-clip: text;
            line-height: 1;
            flex-shrink: 0;
            width: 56px;
            text-align: center;
        }

        .ability-text h4 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .ability-text p {
            font-size: 14px;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .solution-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .solution-image img {
                height: 280px;
            }
            .solution-data-item .number {
                font-size: 22px;
            }
            .ability-item {
                padding: 12px;
            }
        }

        /* 数据成果区 */
        .stats-section {
            background: linear-gradient(180deg, var(--bgdark), rgba(14, 23, 48, 0.6));
            position: relative;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            padding: 40px 0;
            position: relative;
        }

        .stats-item {
            text-align: center;
            padding: 20px;
            position: relative;
        }

        .stats-item:not(:last-child)::after {
            content: '';
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 60%;
            background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.15), transparent);
        }

        .stats-number {
            font-size: 44px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 6px;
            text-shadow: 0 0 20px rgba(0, 229, 160, 0.2);
        }

        .stats-label {
            font-size: 14px;
            color: var(--text-sub);
        }

        .stats-note {
            text-align: center;
            font-size: 12px;
            color: var(--text-weak);
            margin-top: 8px;
            letter-spacing: 1px;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px 0;
            }
            .stats-item:nth-child(2)::after {
                display: none;
            }
            .stats-number {
                font-size: 32px;
            }
        }

        /* 最新资讯 CMS 区 */
        .news-section {
            background: linear-gradient(180deg, rgba(14, 23, 48, 0.6), var(--bgdark));
        }

        .news-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 40px;
        }

        .news-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-sub);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: 999px;
            border: 1px solid var(--glass-border);
            transition: all 0.2s ease;
        }

        .news-link:hover {
            color: var(--accent);
            border-color: var(--accent);
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.2);
        }

        .news-featured {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 32px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 24px;
            backdrop-filter: blur(12px);
            transition: all 0.2s ease;
            overflow: hidden;
        }

        .news-featured:hover {
            border-color: var(--glass-border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }

        .news-featured-image {
            border-radius: 12px;
            overflow: hidden;
        }

        .news-featured-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 220px;
        }

        .news-featured-content {
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 12px;
        }

        .news-tag {
            display: inline-block;
            background: rgba(30, 94, 255, 0.15);
            color: #B8D0FF;
            font-size: 12px;
            padding: 2px 12px;
            border-radius: 999px;
            border: 1px solid rgba(30, 94, 255, 0.2);
            margin-right: 8px;
        }

        .news-date {
            font-size: 13px;
            color: var(--text-weak);
            margin-left: 4px;
        }

        .news-featured h3 {
            font-size: 22px;
            font-weight: 600;
            line-height: 1.4;
            margin: 8px 0;
        }

        .news-featured h3 a {
            color: var(--text-main);
        }

        .news-featured h3 a:hover {
            color: var(--accent);
        }

        .news-summary {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 24px;
        }

        .news-card {
            display: flex;
            gap: 16px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 12px;
            padding: 16px;
            backdrop-filter: blur(8px);
            transition: all 0.2s ease;
        }

        .news-card:hover {
            border-color: var(--glass-border-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card);
        }

        .news-card-thumb {
            width: 120px;
            height: 80px;
            border-radius: 10px;
            overflow: hidden;
            background: linear-gradient(135deg, var(--primary), var(--cyanlight));
            flex-shrink: 0;
        }

        .news-card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-card-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-width: 0;
        }

        .news-card-body h4 {
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 6px;
        }

        .news-card-body h4 a {
            color: var(--text-main);
        }

        .news-card-body h4 a:hover {
            color: var(--accent);
        }

        .news-card-meta {
            display: flex;
            align-items: center;
            font-size: 12px;
            color: var(--text-weak);
        }

        @media (max-width: 1024px) {
            .news-featured {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .news-featured-image img {
                min-height: 160px;
            }
            .news-list {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .news-featured {
                padding: 16px;
            }
            .news-featured h3 {
                font-size: 18px;
            }
            .news-card {
                padding: 12px;
            }
            .news-card-thumb {
                width: 90px;
                height: 64px;
            }
        }

        /* 客户证言区 */
        .testimonial-section {
            background: linear-gradient(180deg, var(--bgdark), rgba(14, 23, 48, 0.5));
        }

        .testimonial-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .testimonial-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 32px;
            backdrop-filter: blur(12px);
            transition: all 0.2s ease;
        }

        .testimonial-card:hover {
            transform: translateY(-4px);
            border-color: var(--glass-border-hover);
            box-shadow: var(--shadow-card);
        }

        .testimonial-stars {
            color: #FFD166;
            margin-bottom: 16px;
            font-size: 14px;
            letter-spacing: 4px;
        }

        .testimonial-quote {
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-main);
            margin-bottom: 20px;
        }

        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testimonial-avatar {
            width: 42px;
            height: 42px;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            font-size: 16px;
            color: #fff;
        }

        .testimonial-name {
            font-size: 14px;
            font-weight: 500;
        }

        .testimonial-role {
            font-size: 12px;
            color: var(--text-weak);
        }

        @media (max-width: 768px) {
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
        }

        /* FAQ 区 */
        .faq-section {
            background: linear-gradient(180deg, rgba(14, 23, 48, 0.5), var(--bgdark));
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 12px;
            padding: 0;
            overflow: hidden;
            transition: all 0.2s ease;
        }

        .faq-item:hover {
            border-color: var(--glass-border-hover);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s ease;
            background: transparent;
            color: var(--text-main);
        }

        .faq-question:hover {
            color: var(--accent);
        }

        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--text-sub);
            margin-left: 16px;
            flex-shrink: 0;
        }

        .faq-item.active .faq-question i {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.75;
        }

        @media (max-width: 768px) {
            .faq-question {
                padding: 16px 18px;
                font-size: 14px;
            }
            .faq-answer-inner {
                padding: 0 18px 16px;
                font-size: 13px;
            }
        }

        /* CTA 区 */
        .cta-section {
            position: relative;
            background: linear-gradient(180deg, rgba(10, 15, 30, 0.7), rgba(10, 15, 30, 0.7)), url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            padding: 80px 0;
            text-align: center;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at center, rgba(30, 94, 255, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-title {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-desc {
            font-size: 16px;
            color: var(--text-sub);
            margin-bottom: 32px;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            margin-bottom: 32px;
            flex-wrap: wrap;
        }

        .subscribe-form {
            display: flex;
            gap: 12px;
            max-width: 420px;
            margin: 0 auto;
        }

        .subscribe-form input {
            flex: 1;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-btn);
            padding: 12px 18px;
            font-size: 14px;
            color: var(--text-main);
            transition: all 0.2s ease;
        }

        .subscribe-form input::placeholder {
            color: var(--text-weak);
        }

        .subscribe-form input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.15);
            outline: none;
        }

        .subscribe-btn {
            background: linear-gradient(90deg, var(--primary), var(--cyanlight));
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
            transition: all 0.2s ease;
            box-shadow: 0 0 16px rgba(30, 94, 255, 0.3);
        }

        .subscribe-btn:hover {
            filter: brightness(1.15);
            box-shadow: 0 0 28px rgba(30, 94, 255, 0.5);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 0;
            }
            .cta-title {
                font-size: 26px;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary,
            .btn-glass {
                min-width: 200px;
            }
            .subscribe-form {
                flex-direction: column;
                padding: 0 16px;
            }
            .subscribe-btn {
                width: 100%;
            }
        }

        /* 页脚 */
        .site-footer {
            background: linear-gradient(180deg, var(--bgdark), #070B16);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 60px;
            padding-bottom: 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo-text {
            margin-bottom: 16px;
        }

        .footer-brand p {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.75;
            max-width: 280px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: var(--text-sub);
            font-size: 14px;
            transition: color 0.2s ease;
        }

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

        .footer-contact p {
            color: var(--text-sub);
            font-size: 14px;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-contact i {
            color: var(--cyanlight);
            width: 16px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-sub);
            transition: all 0.2s ease;
        }

        .footer-social a:hover {
            color: #fff;
            border-color: var(--primary);
            background: rgba(30, 94, 255, 0.2);
            box-shadow: 0 0 12px rgba(30, 94, 255, 0.2);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-copyright {
            color: var(--text-weak);
            font-size: 13px;
        }

        .footer-icp {
            color: var(--text-weak);
            font-size: 13px;
        }

        .footer-icp a {
            color: var(--text-weak);
        }

        .footer-icp a:hover {
            color: var(--text-main);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* 通用动画 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .fade-in-up {
            animation: fadeInUp 0.6s ease-out forwards;
        }

        /* 通用焦点样式 */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* 玻璃卡片通用 */
        .glass-card {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 16px;
            transition: all 0.2s ease;
        }

        .glass-card:hover {
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
        }

        /* 空态样式 */
        .news-empty {
            text-align: center;
            padding: 48px 20px;
            color: var(--text-weak);
            font-size: 15px;
            border: 1px dashed rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-card);
            background: rgba(255, 255, 255, 0.02);
        }

/* roulang page: category1 */
:root {
            --bg-dark: #0A0F1E;
            --bg-deep: #0E1730;
            --primary: #1E5EFF;
            --primary-hover: #2b6bff;
            --accent: #00E5A0;
            --cyan: #00C8FF;
            --text-main: #F0F4FF;
            --text-sub: #A7B4D4;
            --text-dim: #6C7A9E;
            --border-glass: rgba(255,255,255,0.12);
            --card-bg: rgba(255,255,255,0.05);
            --radius-lg: 16px;
            --radius-md: 12px;
            --shadow-default: 0 8px 24px rgba(0,0,0,0.35);
            --shadow-glow: 0 0 24px rgba(30,94,255,0.35);
            --container-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: linear-gradient(180deg, #0A0F1E 0%, #0E1730 100%);
            color: #F0F4FF;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        img {
            max-width: 100%;
            display: block;
        }

        ul,
        ol {
            list-style: none;
        }

        button,
        input {
            font-family: inherit;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 15, 30, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .header-top {
            padding: 14px 0;
        }

        .header-top-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .logo-area {
            display: flex;
            flex-direction: column;
        }

        .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            line-height: 1.3;
        }

        .logo-sub {
            font-size: 11px;
            letter-spacing: 2px;
            color: #6C7A9E;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .search-wrap {
            position: relative;
            display: flex;
            align-items: center;
        }

        .search-toggle {
            background: none;
            border: none;
            color: #A7B4D4;
            font-size: 18px;
            cursor: pointer;
            padding: 6px;
            transition: color .2s;
        }

        .search-toggle:hover {
            color: #00E5A0;
        }

        .search-input {
            width: 0;
            opacity: 0;
            padding: 0;
            border: none;
            transition: width .3s, opacity .3s, padding .3s;
            background: rgba(255, 255, 255, 0.06);
            color: #F0F4FF;
            border-radius: 8px;
            outline: none;
            max-width: 0;
        }

        .search-wrap.open .search-input {
            width: 180px;
            max-width: 180px;
            opacity: 1;
            padding: 8px 14px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .search-input:focus {
            border-color: #00E5A0;
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.2);
        }

        .btn-cta {
            display: inline-block;
            padding: 8px 20px;
            border-radius: 12px;
            background: linear-gradient(90deg, #1E5EFF, #00C8FF);
            color: #fff;
            font-size: 14px;
            font-weight: 500;
            transition: transform .2s, box-shadow .2s;
            white-space: nowrap;
        }

        .btn-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 20px rgba(30, 94, 255, 0.5);
        }

        .nav-tabs {
            display: flex;
            gap: 8px;
            padding: 6px 0 12px;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .nav-tabs::-webkit-scrollbar {
            display: none;
        }

        .nav-tab {
            flex-shrink: 0;
            padding: 7px 18px;
            border-radius: 999px;
            font-size: 14px;
            color: #A7B4D4;
            border: 1px solid transparent;
            transition: all .2s ease;
            position: relative;
            white-space: nowrap;
        }

        .nav-tab:hover {
            color: #F0F4FF;
            border-color: rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-tab.active {
            color: #fff;
            background: rgba(30, 94, 255, 0.2);
            border-color: rgba(30, 94, 255, 0.3);
        }

        .nav-tab.active::after {
            content: '';
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: -12px;
            width: 24px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, #1E5EFF, #00C8FF);
            box-shadow: 0 0 8px rgba(30, 94, 255, 0.6);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 80px 0 64px;
            background-size: cover;
            background-position: center;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 15, 30, 0.88) 0%, rgba(10, 15, 30, 0.4) 50%, #0A0F1E 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: #6C7A9E;
            margin-bottom: 28px;
        }

        .breadcrumb a {
            color: #A7B4D4;
            transition: color .2s;
        }

        .breadcrumb a:hover {
            color: #00E5A0;
        }

        .breadcrumb-sep {
            color: #4A5A7E;
        }

        .hero h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .hero-sub {
            font-size: 18px;
            color: #A7B4D4;
            max-width: 640px;
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 12px;
            background: linear-gradient(90deg, #1E5EFF, #00C8FF);
            color: #fff;
            font-size: 15px;
            font-weight: 500;
            transition: all .2s ease;
            box-shadow: 0 4px 20px rgba(30, 94, 255, 0.35);
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 28px rgba(30, 94, 255, 0.55);
            filter: brightness(1.1);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #F0F4FF;
            font-size: 15px;
            transition: all .2s ease;
            cursor: pointer;
        }

        .btn-ghost:hover {
            border-color: rgba(255, 255, 255, 0.35);
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }

        .btn-large {
            padding: 16px 34px;
            font-size: 16px;
        }

        /* ===== Section ===== */
        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .section h2 {
            font-size: 32px;
            font-weight: 600;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .section-desc {
            color: #A7B4D4;
            font-size: 16px;
            max-width: 600px;
            margin-bottom: 40px;
        }

        /* ===== Split ===== */
        .split-grid {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 48px;
            align-items: center;
        }

        .feature-card {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
        }

        .feature-img {
            width: 100%;
            height: 360px;
            object-fit: cover;
        }

        .feature-data-panel {
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 16px;
            display: flex;
            gap: 24px;
            padding: 16px 20px;
            border-radius: 12px;
            background: rgba(10, 15, 30, 0.72);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.12);
        }

        .data-item {
            display: flex;
            flex-direction: column;
        }

        .data-num {
            font-size: 22px;
            font-weight: 700;
            color: #00E5A0;
        }

        .data-label {
            font-size: 13px;
            color: #A7B4D4;
        }

        .resource-list {
            display: flex;
            flex-direction: column;
        }

        .resource-list li {
            display: flex;
            gap: 18px;
            padding: 20px 4px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background .2s;
        }

        .resource-list li:first-child {
            padding-top: 8px;
        }

        .resource-list li:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .resource-icon {
            flex-shrink: 0;
            width: 46px;
            height: 46px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(30, 94, 255, 0.15);
            border: 1px solid rgba(30, 94, 255, 0.25);
            color: #00C8FF;
            font-size: 18px;
        }

        .resource-list h3 {
            font-size: 17px;
            font-weight: 500;
            margin-bottom: 4px;
            color: #F0F4FF;
        }

        .resource-list p {
            font-size: 14px;
            color: #6C7A9E;
            line-height: 1.6;
        }

        /* ===== Quality ===== */
        .quality-grid {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 48px;
            align-items: start;
        }

        .quality-intro h2 {
            font-size: 32px;
            font-weight: 600;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .quality-intro p {
            color: #A7B4D4;
            margin-bottom: 20px;
        }

        .text-link {
            color: #00E5A0;
            font-size: 15px;
            transition: opacity .2s;
        }

        .text-link:hover {
            opacity: .8;
        }

        .quality-points {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .quality-item {
            padding: 24px;
            border-radius: 16px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: all .2s ease;
        }

        .quality-item:hover {
            transform: translateY(-1px);
            border-color: rgba(255, 255, 255, 0.25);
            box-shadow: 0 0 24px rgba(30, 94, 255, 0.25);
        }

        .quality-num {
            font-size: 26px;
            font-weight: 700;
            color: #00E5A0;
            display: block;
            margin-bottom: 10px;
        }

        .quality-item h3 {
            font-size: 17px;
            font-weight: 500;
            margin-bottom: 6px;
        }

        .quality-item p {
            font-size: 14px;
            color: #6C7A9E;
        }

        /* ===== Coverage ===== */
        .coverage-section {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .tag-pill {
            padding: 10px 22px;
            border-radius: 999px;
            background: rgba(30, 94, 255, 0.18);
            border: 1px solid rgba(30, 94, 255, 0.25);
            color: #B8D0FF;
            font-size: 14px;
            transition: all .2s ease;
        }

        .tag-pill:hover {
            background: rgba(30, 94, 255, 0.3);
            color: #fff;
            transform: translateY(-1px);
        }

        /* ===== Timeline ===== */
        .timeline-section {
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .timeline {
            position: relative;
            padding-left: 28px;
            display: flex;
            flex-direction: column;
            gap: 32px;
            max-width: 760px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 4px;
            bottom: 4px;
            width: 2px;
            background: linear-gradient(180deg, #1E5EFF, #00C8FF, #00E5A0);
            opacity: .5;
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
        }

        .timeline-dot {
            position: absolute;
            left: -28px;
            top: 6px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: #0E1730;
            border: 3px solid #00E5A0;
            box-shadow: 0 0 10px rgba(0, 229, 160, 0.4);
        }

        .timeline-item h3 {
            font-size: 18px;
            font-weight: 500;
            margin-bottom: 4px;
        }

        .timeline-item p {
            font-size: 14px;
            color: #6C7A9E;
            max-width: 560px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            border-radius: 16px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            overflow: hidden;
            transition: border-color .2s;
        }

        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.22);
        }

        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            background: none;
            border: none;
            color: #F0F4FF;
            font-size: 16px;
            text-align: left;
            cursor: pointer;
        }

        .faq-icon {
            font-size: 22px;
            color: #00E5A0;
            transition: transform .3s;
            flex-shrink: 0;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
        }

        .faq-answer p {
            padding: 0 24px 20px;
            font-size: 14px;
            color: #A7B4D4;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 90px 0;
            background-size: cover;
            background-position: center;
        }

        .cta-overlay {
            position: absolute;
            inset: 0;
            background: rgba(10, 15, 30, 0.75);
            backdrop-filter: blur(2px);
            -webkit-backdrop-filter: blur(2px);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 34px;
            font-weight: 600;
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .cta-content>p {
            color: #A7B4D4;
            margin-bottom: 28px;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            max-width: 420px;
            margin: 0 auto;
        }

        .subscribe-form input {
            flex: 1;
            padding: 12px 16px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #F0F4FF;
            outline: none;
            font-size: 14px;
            transition: border-color .2s, box-shadow .2s;
            min-width: 0;
        }

        .subscribe-form input::placeholder {
            color: #6C7A9E;
        }

        .subscribe-form input:focus {
            border-color: #00E5A0;
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.2);
        }

        .subscribe-form .btn-primary {
            padding: 12px 22px;
            white-space: nowrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: rgba(8, 12, 24, 0.9);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand p {
            font-size: 14px;
            color: #6C7A9E;
            margin-top: 4px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: #A7B4D4;
            transition: all .2s;
        }

        .footer-social a:hover {
            color: #00E5A0;
            border-color: rgba(0, 229, 160, 0.4);
        }

        .footer-title {
            font-size: 15px;
            font-weight: 500;
            margin-bottom: 14px;
            color: #F0F4FF;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: #6C7A9E;
            transition: color .2s;
        }

        .footer-links a:hover {
            color: #00E5A0;
        }

        .footer-contact p {
            font-size: 14px;
            color: #6C7A9E;
            margin-bottom: 10px;
        }

        .footer-contact i {
            color: #00C8FF;
            margin-right: 8px;
            width: 16px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-copyright,
        .footer-icp {
            font-size: 13px;
            color: #4A5A7E;
        }

        .footer-icp a {
            color: #4A5A7E;
        }

        .footer-icp a:hover {
            color: #A7B4D4;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .split-grid,
            .quality-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .hero {
                padding: 56px 0 48px;
            }

            .hero h1 {
                font-size: 32px;
            }

            .hero-sub {
                font-size: 16px;
            }

            .section {
                padding: 48px 0;
            }

            .section h2 {
                font-size: 24px;
            }

            .quality-points {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .cta-actions {
                flex-direction: column;
                align-items: center;
            }

            .subscribe-form {
                flex-direction: column;
            }

            .header-top-inner {
                flex-wrap: wrap;
            }

            .search-input,
            .search-wrap .search-input {
                display: none;
                width: 0;
                max-width: 0;
                opacity: 0;
                padding: 0;
                border: none;
            }

            .search-wrap.open .search-input {
                display: block;
                width: 140px;
                max-width: 140px;
                opacity: 1;
                padding: 6px 12px;
                border: 1px solid rgba(255, 255, 255, 0.15);
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .feature-data-panel {
                flex-direction: column;
                gap: 8px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .btn-primary,
            .btn-ghost {
                justify-content: center;
            }

            .btn-cta {
                padding: 6px 14px;
                font-size: 13px;
            }

            .logo-text {
                font-size: 18px;
            }
        }

        @media (max-width: 480px) {
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .timeline {
                padding-left: 22px;
            }

            .timeline-dot {
                left: -22px;
            }
        }

/* roulang page: article */
:root {
        --bg-primary: #0A0F1E;
        --bg-secondary: #0E1730;
        --primary: #1E5EFF;
        --accent: #00E5A0;
        --cyan: #00C8FF;
        --text-primary: #F0F4FF;
        --text-secondary: #A7B4D4;
        --text-muted: #6C7A9E;
        --border-glass: rgba(255,255,255,0.12);
        --border-glass-hover: rgba(255,255,255,0.25);
        --bg-glass: rgba(255,255,255,0.05);
        --radius-card: 16px;
        --radius-btn: 12px;
        --shadow-card: 0 8px 24px rgba(0,0,0,0.35);
        --shadow-glow: 0 0 24px rgba(30,94,255,0.35);
        --container: 1200px;
        --spacing-section: 80px;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        background: linear-gradient(160deg, #0A0F1E 0%, #0E1730 100%);
        color: var(--text-primary);
        line-height: 1.75;
        min-height: 100vh;
        -webkit-font-smoothing: antialiased;
    }

    a {
        text-decoration: none;
        color: inherit;
    }

    img {
        max-width: 100%;
        display: block;
    }

    button,
    input,
    textarea {
        font-family: inherit;
    }

    ul,
    ol {
        list-style-position: inside;
    }

    .container {
        max-width: var(--container);
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ===== Header 双层导航 ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 100;
        background: rgba(10, 15, 30, 0.85);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .nav-top {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 16px 0;
        gap: 16px;
    }

    .brand {
        display: flex;
        flex-direction: column;
        line-height: 1.2;
    }

    .logo-text {
        font-size: 22px;
        font-weight: 700;
        letter-spacing: 0.5px;
        color: #fff;
    }

    .logo-sub {
        font-size: 10px;
        letter-spacing: 2px;
        color: var(--text-muted);
        text-transform: uppercase;
    }

    .nav-top-right {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .search-toggle {
        background: transparent;
        border: 1px solid rgba(255, 255, 255, 0.15);
        color: var(--text-secondary);
        width: 38px;
        height: 38px;
        border-radius: 50%;
        cursor: pointer;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        transition: all 0.2s ease;
    }

    .search-toggle:hover {
        color: #fff;
        border-color: var(--border-glass-hover);
        background: rgba(255, 255, 255, 0.08);
    }

    .search-box {
        display: none;
        align-items: center;
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.12);
        border-radius: 999px;
        padding: 5px 6px 5px 16px;
        gap: 8px;
    }

    .search-box.open {
        display: flex;
        animation: fadeIn 0.2s ease;
    }

    .search-box input {
        background: transparent;
        border: none;
        outline: none;
        color: #fff;
        width: 160px;
        font-size: 13px;
    }

    .search-box input::placeholder {
        color: var(--text-muted);
    }

    .search-box button {
        background: var(--primary);
        border: none;
        color: #fff;
        width: 28px;
        height: 28px;
        border-radius: 50%;
        cursor: pointer;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 12px;
        transition: background 0.2s;
    }

    .search-box button:hover {
        background: var(--cyan);
    }

    .nav-tabs {
        display: flex;
        gap: 8px;
        padding: 10px 0 16px;
        overflow-x: auto;
        scrollbar-width: none;
        -webkit-overflow-scrolling: touch;
    }

    .nav-tabs::-webkit-scrollbar {
        display: none;
    }

    .nav-tab {
        display: inline-flex;
        align-items: center;
        padding: 8px 20px;
        border-radius: 999px;
        font-size: 14px;
        font-weight: 500;
        color: var(--text-secondary);
        white-space: nowrap;
        transition: all 0.2s ease;
        border: 1px solid transparent;
    }

    .nav-tab:hover {
        color: #fff;
        border-color: rgba(255, 255, 255, 0.18);
        background: rgba(255, 255, 255, 0.06);
    }

    .nav-tab.active {
        color: #fff;
        background: rgba(30, 94, 255, 0.22);
        border-color: rgba(30, 94, 255, 0.45);
        box-shadow: inset 0 -2px 0 var(--primary), 0 2px 12px rgba(30, 94, 255, 0.35);
    }

    /* ===== 按钮 ===== */
    .btn-primary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: linear-gradient(90deg, #1E5EFF, #00C8FF);
        color: #fff;
        padding: 12px 28px;
        border-radius: var(--radius-btn);
        font-weight: 600;
        font-size: 15px;
        border: none;
        cursor: pointer;
        transition: all 0.2s ease;
        box-shadow: 0 4px 20px rgba(30, 94, 255, 0.3);
    }

    .btn-primary:hover {
        box-shadow: 0 0 28px rgba(30, 94, 255, 0.5);
        transform: translateY(-2px);
        filter: brightness(1.1);
        color: #fff;
    }

    .btn-primary:active {
        transform: translateY(0);
    }

    .btn-primary.btn-lg {
        padding: 16px 36px;
        font-size: 16px;
    }

    .btn-primary.btn-sm {
        padding: 8px 20px;
        font-size: 13px;
    }

    .btn-ghost {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.15);
        color: #fff;
        padding: 12px 28px;
        border-radius: var(--radius-btn);
        font-weight: 500;
        font-size: 15px;
        cursor: pointer;
        transition: all 0.2s ease;
    }

    .btn-ghost:hover {
        border-color: var(--border-glass-hover);
        background: rgba(255, 255, 255, 0.12);
        color: #fff;
        transform: translateY(-2px);
    }

    .btn-ghost:active {
        transform: translateY(0);
    }

    .btn-ghost.btn-lg {
        padding: 16px 36px;
        font-size: 16px;
    }

    .btn-ghost.btn-sm {
        padding: 8px 20px;
        font-size: 13px;
    }

    /* ===== 文章头部 ===== */
    .article-hero {
        padding: 60px 0 48px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        position: relative;
    }

    .breadcrumb {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 8px;
        font-size: 13px;
        color: var(--text-muted);
        margin-bottom: 20px;
    }

    .breadcrumb a {
        color: var(--text-secondary);
        transition: color 0.2s;
    }

    .breadcrumb a:hover {
        color: var(--accent);
    }

    .breadcrumb .sep {
        color: rgba(255, 255, 255, 0.2);
    }

    .breadcrumb .current {
        color: var(--text-muted);
        max-width: 420px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .article-title {
        font-size: 40px;
        font-weight: 700;
        line-height: 1.35;
        margin-bottom: 22px;
        max-width: 860px;
        letter-spacing: -0.5px;
    }

    .article-meta {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 10px;
    }

    .meta-pill {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 999px;
        padding: 6px 16px;
        font-size: 13px;
        color: var(--text-secondary);
    }

    .meta-pill i {
        color: var(--cyan);
        font-size: 13px;
    }

    .share-buttons {
        display: inline-flex;
        gap: 8px;
        margin-left: auto;
    }

    .share-btn {
        width: 34px;
        height: 34px;
        border-radius: 50%;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.12);
        color: var(--text-secondary);
        font-size: 13px;
        transition: all 0.2s;
    }

    .share-btn:hover {
        background: var(--primary);
        border-color: var(--primary);
        color: #fff;
    }

    /* ===== 正文区域 ===== */
    .article-body {
        padding: var(--spacing-section) 0 0;
    }

    .article-content {
        max-width: 720px;
        margin: 0 auto;
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 20px;
        padding: 48px 56px;
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        overflow-wrap: break-word;
    }

    .article-content h2 {
        font-size: 26px;
        font-weight: 600;
        color: var(--text-primary);
        margin: 44px 0 16px;
        padding-bottom: 10px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .article-content h2:first-child {
        margin-top: 0;
    }

    .article-content h3 {
        font-size: 21px;
        font-weight: 600;
        color: #fff;
        margin: 32px 0 12px;
    }

    .article-content h4 {
        font-size: 18px;
        font-weight: 600;
        color: #fff;
        margin: 26px 0 10px;
    }

    .article-content p {
        font-size: 16px;
        line-height: 1.9;
        color: var(--text-secondary);
        margin-bottom: 26px;
    }

    .article-content a {
        color: var(--cyan);
        border-bottom: 1px solid rgba(0, 200, 255, 0.3);
        transition: all 0.2s;
    }

    .article-content a:hover {
        color: #fff;
        border-color: var(--cyan);
    }

    .article-content img {
        border-radius: 14px;
        margin: 28px 0;
        box-shadow: var(--shadow-card);
        height: auto;
    }

    .article-content blockquote {
        border-left: 3px solid var(--accent);
        background: rgba(0, 229, 160, 0.08);
        padding: 18px 24px;
        border-radius: 0 14px 14px 0;
        margin: 28px 0;
        color: var(--text-secondary);
        font-style: italic;
    }

    .article-content blockquote p:last-child {
        margin-bottom: 0;
    }

    .article-content ul,
    .article-content ol {
        margin: 0 0 26px;
        padding-left: 22px;
        color: var(--text-secondary);
    }

    .article-content li {
        margin-bottom: 8px;
    }

    .article-content table {
        width: 100%;
        table-layout: fixed;
        border-collapse: collapse;
        margin: 28px 0;
        font-size: 14px;
    }

    .article-content th {
        background: rgba(30, 94, 255, 0.15);
        color: #fff;
        padding: 12px 16px;
        text-align: left;
        font-weight: 600;
    }

    .article-content td {
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        padding: 12px 16px;
        color: var(--text-secondary);
        word-break: break-word;
    }

    .article-content hr {
        border: none;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        margin: 36px 0;
    }

    .article-content code {
        background: rgba(30, 94, 255, 0.15);
        padding: 2px 8px;
        border-radius: 6px;
        font-size: 14px;
        color: var(--accent);
    }

    .article-content pre {
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 12px;
        padding: 20px;
        overflow-x: auto;
        margin: 28px 0;
    }

    .article-content pre code {
        background: none;
        padding: 0;
        color: var(--text-primary);
    }

    .article-content iframe {
        max-width: 100%;
        border-radius: 12px;
        margin: 28px 0;
    }

    /* ===== 文章底部 ===== */
    .article-footer {
        max-width: 720px;
        margin: 32px auto 0;
    }

    .article-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-bottom: 24px;
    }

    .tag-pill {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: rgba(30, 94, 255, 0.2);
        color: #B8D0FF;
        padding: 6px 16px;
        border-radius: 999px;
        font-size: 13px;
        transition: all 0.2s;
        border: 1px solid transparent;
    }

    a.tag-pill:hover {
        background: rgba(30, 94, 255, 0.35);
        color: #fff;
        border-color: rgba(30, 94, 255, 0.5);
    }

    .article-nav {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 16px;
        padding-top: 24px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        flex-wrap: wrap;
    }

    /* ===== 未找到 ===== */
    .not-found-card {
        max-width: 560px;
        margin: 0 auto 80px;
        text-align: center;
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 20px;
        padding: 64px 40px;
    }

    .not-found-icon {
        font-size: 56px;
        color: var(--primary);
        margin-bottom: 20px;
    }

    .not-found-card h2 {
        font-size: 28px;
        margin-bottom: 12px;
    }

    .not-found-card p {
        color: var(--text-muted);
        margin-bottom: 28px;
    }

    /* ===== 相关推荐 ===== */
    .related-section {
        padding: var(--spacing-section) 0 0;
    }

    .section-head {
        display: flex;
        justify-content: space-between;
        align-items: flex-end;
        gap: 16px;
        margin-bottom: 32px;
    }

    .section-head h2 {
        font-size: 30px;
        font-weight: 600;
        position: relative;
    }

    .section-head h2::after {
        content: '';
        display: block;
        width: 36px;
        height: 3px;
        background: var(--accent);
        border-radius: 2px;
        margin-top: 8px;
    }

    .text-link {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        color: var(--text-secondary);
        font-size: 14px;
        transition: color 0.2s;
    }

    .text-link:hover {
        color: var(--accent);
    }

    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }

    .related-card {
        display: flex;
        flex-direction: column;
        overflow: hidden;
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(255, 255, 255, 0.12);
        border-radius: var(--radius-card);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        transition: all 0.2s ease;
    }

    .related-card:hover {
        border-color: rgba(255, 255, 255, 0.25);
        transform: translateY(-4px);
        box-shadow: var(--shadow-glow);
    }

    .related-thumb {
        height: 170px;
        overflow: hidden;
    }

    .related-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }

    .related-card:hover .related-thumb img {
        transform: scale(1.05);
    }

    .related-body {
        padding: 22px;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        flex: 1;
    }

    .related-body h3 {
        font-size: 18px;
        font-weight: 600;
        line-height: 1.5;
        color: #fff;
        transition: color 0.2s;
    }

    .related-card:hover .related-body h3 {
        color: var(--cyan);
    }

    .related-body p {
        font-size: 14px;
        line-height: 1.7;
        color: var(--text-secondary);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .related-link {
        margin-top: auto;
        font-size: 13px;
        color: var(--text-secondary);
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: all 0.2s;
    }

    .related-card:hover .related-link {
        color: var(--accent);
    }

    /* ===== CTA ===== */
    .cta-section {
        padding: var(--spacing-section) 0;
        margin-top: var(--spacing-section);
        background: linear-gradient(rgba(10, 15, 30, 0.82), rgba(10, 15, 30, 0.92)), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .cta-inner {
        max-width: 700px;
        margin: 0 auto;
        text-align: center;
    }

    .cta-inner h2 {
        font-size: 32px;
        font-weight: 700;
        margin-bottom: 16px;
        letter-spacing: -0.5px;
    }

    .cta-inner p {
        color: var(--text-secondary);
        margin-bottom: 28px;
    }

    .cta-buttons {
        display: flex;
        gap: 16px;
        justify-content: center;
        flex-wrap: wrap;
    }

    /* ===== Footer ===== */
    .site-footer {
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        background: rgba(10, 15, 30, 0.6);
        padding: 64px 0 0;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1.2fr;
        gap: 48px;
        padding-bottom: 48px;
    }

    .footer-brand p {
        color: var(--text-muted);
        font-size: 14px;
        max-width: 280px;
        margin-top: 12px;
    }

    .footer-social {
        display: flex;
        gap: 10px;
        margin-top: 20px;
    }

    .footer-social a {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        border: 1px solid rgba(255, 255, 255, 0.12);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: var(--text-muted);
        font-size: 14px;
        transition: all 0.2s;
    }

    .footer-social a:hover {
        background: var(--primary);
        border-color: var(--primary);
        color: #fff;
        transform: translateY(-2px);
    }

    .footer-title {
        font-size: 15px;
        font-weight: 600;
        color: #fff;
        margin-bottom: 16px;
    }

    .footer-links {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .footer-links a {
        color: var(--text-muted);
        font-size: 14px;
        transition: color 0.2s;
    }

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

    .footer-contact p {
        color: var(--text-muted);
        font-size: 14px;
        margin-bottom: 10px;
    }

    .footer-contact i {
        color: var(--cyan);
        margin-right: 8px;
        width: 16px;
        text-align: center;
    }

    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        padding: 20px 0;
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        flex-wrap: wrap;
    }

    .footer-copyright {
        color: var(--text-muted);
        font-size: 13px;
    }

    .footer-icp a {
        color: var(--text-muted);
        font-size: 13px;
        transition: color 0.2s;
    }

    .footer-icp a:hover {
        color: var(--accent);
    }

    @keyframes fadeIn {
        from {
            opacity: 0;
            transform: translateY(-4px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .related-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .article-content {
            padding: 36px;
        }
    }

    @media (max-width: 768px) {
        :root {
            --spacing-section: 48px;
        }
        .container {
            padding: 0 16px;
        }
        .article-hero {
            padding: 48px 0 32px;
        }
        .article-title {
            font-size: 30px;
        }
        .nav-top {
            flex-wrap: wrap;
        }
        .search-box {
            order: 3;
            width: 100%;
        }
        .search-box input {
            flex: 1;
            width: auto;
        }
        .article-content {
            padding: 28px 24px;
        }
        .article-content h2 {
            font-size: 23px;
        }
        .section-head {
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
        }
        .section-head h2 {
            font-size: 26px;
        }
        .cta-inner h2 {
            font-size: 26px;
        }
        .not-found-card {
            padding: 48px 24px;
        }
    }

    @media (max-width: 520px) {
        .related-grid {
            grid-template-columns: 1fr;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 28px;
        }
        .footer-bottom {
            flex-direction: column;
            text-align: center;
        }
        .article-nav {
            flex-direction: column;
            align-items: stretch;
        }
        .article-nav .btn-primary,
        .article-nav .btn-ghost {
            width: 100%;
        }
        .article-meta {
            gap: 8px;
        }
        .meta-pill {
            padding: 5px 12px;
            font-size: 12px;
        }
        .share-buttons {
            margin-left: 0;
        }
        .cta-buttons .btn-primary,
        .cta-buttons .btn-ghost {
            width: 100%;
        }
        .nav-top-right {
            gap: 8px;
        }
        .logo-text {
            font-size: 18px;
        }
        .nav-tab {
            padding: 7px 16px;
            font-size: 13px;
        }
        .article-title {
            font-size: 24px;
        }
        .breadcrumb {
            font-size: 12px;
        }
    }

/* roulang page: category2 */
:root {
            --bg-dark: #0A0F1E;
            --bg-deep: #0E1730;
            --primary: #1E5EFF;
            --accent: #00E5A0;
            --cyan: #00C8FF;
            --text-main: #F0F4FF;
            --text-secondary: #A7B4D4;
            --text-muted: #6C7A9E;
            --border-glass: rgba(255, 255, 255, 0.12);
            --bg-glass: rgba(255, 255, 255, 0.05);
            --radius-card: 16px;
            --radius-btn: 12px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 24px rgba(30, 94, 255, 0.35);
            --font-main: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            margin: 0;
            background: linear-gradient(180deg, #0A0F1E 0%, #0E1730 100%);
            background-attachment: fixed;
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        input {
            font-family: inherit;
        }

        body .container {
            max-width: 1200px !important;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 640px) {
            body .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(10, 15, 30, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            padding-bottom: 14px;
        }
        .brand {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .logo-text {
            font-size: 26px;
            font-weight: 800;
            color: #fff;
            background: linear-gradient(135deg, #00E5A0 0%, #00C8FF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo-sub {
            font-size: 10px;
            letter-spacing: 3px;
            color: var(--text-muted);
            text-transform: uppercase;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .search-btn {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-secondary);
            width: 40px;
            height: 40px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s;
        }
        .search-btn:hover {
            border-color: rgba(255, 255, 255, 0.3);
            color: #fff;
        }
        .header-cta {
            padding: 10px 20px;
            font-size: 14px;
        }

        .nav-tabs {
            display: flex;
            gap: 8px;
            overflow-x: auto;
            padding-bottom: 10px;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-tabs::-webkit-scrollbar {
            display: none;
        }
        .nav-tab {
            padding: 8px 20px;
            border-radius: 999px;
            color: var(--text-secondary);
            font-size: 15px;
            white-space: nowrap;
            border: 1px solid transparent;
            transition: all 0.2s ease;
        }
        .nav-tab:hover {
            color: var(--text-main);
            border-color: rgba(255, 255, 255, 0.2);
        }
        .nav-tab.active {
            background: rgba(30, 94, 255, 0.2);
            color: #fff;
            border-color: rgba(30, 94, 255, 0.5);
            box-shadow: 0 0 12px rgba(30, 94, 255, 0.3);
        }

        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(90deg, #1E5EFF, #00C8FF);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 13px 28px;
            font-weight: 600;
            font-size: 15px;
            box-shadow: 0 4px 20px rgba(30, 94, 255, 0.4);
            transition: all 0.2s ease;
        }
        .btn-primary:hover {
            filter: brightness(1.15);
            box-shadow: 0 6px 28px rgba(30, 94, 255, 0.55);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #fff;
            border-radius: var(--radius-btn);
            padding: 13px 28px;
            font-weight: 500;
            font-size: 15px;
            backdrop-filter: blur(8px);
            transition: all 0.2s ease;
        }
        .btn-ghost:hover {
            border-color: rgba(255, 255, 255, 0.35);
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-1px);
        }
        .btn-ghost:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        /* ===== Section ===== */
        .section {
            padding: 80px 0;
        }
        .section-tight {
            padding: 56px 0;
        }
        @media (max-width: 640px) {
            .section {
                padding: 48px 0;
            }
            .section-tight {
                padding: 40px 0;
            }
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 40px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 600;
            margin: 0;
            line-height: 1.3;
        }
        .section-head p {
            color: var(--text-secondary);
            margin: 8px 0 0;
            font-size: 15px;
        }
        .section-link {
            color: var(--accent);
            font-size: 14px;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all 0.2s;
        }
        .section-link:hover {
            color: #fff;
        }
        @media (max-width: 768px) {
            .section-head {
                flex-direction: column;
                align-items: flex-start;
            }
            .section-head h2 {
                font-size: 24px;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            padding: 18px 24px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: all 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            margin: 0 8px;
            color: var(--text-muted);
        }
        .breadcrumb .current {
            color: var(--text-main);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background:
                linear-gradient(180deg, rgba(10, 15, 30, 0.82) 0%, rgba(14, 23, 48, 0.92) 100%),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 90px 0 80px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 42px 42px;
            pointer-events: none;
        }
        .hero-inner {
            position: relative;
            z-index: 1;
            max-width: 780px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 229, 160, 0.12);
            border: 1px solid rgba(0, 229, 160, 0.35);
            color: var(--accent);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            margin-bottom: 24px;
        }
        .hero h1 {
            font-size: 48px;
            line-height: 1.2;
            font-weight: 700;
            margin: 0 0 20px;
            letter-spacing: -0.5px;
        }
        .hero-sub {
            font-size: 18px;
            color: var(--text-secondary);
            margin: 0 0 32px;
            max-width: 640px;
        }
        .hero-cta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        @media (max-width: 768px) {
            .hero {
                padding: 56px 0 48px;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero-sub {
                font-size: 16px;
            }
        }

        /* ===== Glass Card ===== */
        .glass-card {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.2s ease;
        }
        .glass-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.25);
            box-shadow: 0 0 24px rgba(30, 94, 255, 0.35);
        }

        /* ===== Knowledge Card ===== */
        .knowledge-card {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .knowledge-cover {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }
        .knowledge-card-lg .knowledge-cover {
            aspect-ratio: 16 / 10;
        }
        .knowledge-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }
        .glass-card:hover .knowledge-cover img {
            transform: scale(1.04);
        }
        .cover-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(10, 15, 30, 0.75);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-main);
            font-size: 12px;
            padding: 5px 12px;
            border-radius: 999px;
        }
        .card-body {
            padding: 28px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        @media (max-width: 640px) {
            .card-body {
                padding: 20px;
            }
        }
        .card-num {
            font-size: 28px;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 1px rgba(0, 229, 160, 0.4);
            line-height: 1;
            margin-bottom: 10px;
        }
        .card-body h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 0 0 10px;
            line-height: 1.4;
        }
        .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 16px;
            line-height: 1.7;
            flex: 1;
        }
        .card-link {
            font-size: 13px;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all 0.2s;
            margin-top: auto;
        }
        .card-link:hover {
            color: #fff;
            gap: 10px;
        }

        /* ===== Pill Tag ===== */
        .topic-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 28px;
        }
        .pill-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(30, 94, 255, 0.2);
            color: #B8D0FF;
            border-radius: 999px;
            padding: 7px 16px;
            font-size: 13px;
            border: 1px solid transparent;
            transition: all 0.2s;
        }
        .pill-tag:hover {
            background: rgba(30, 94, 255, 0.35);
            color: #fff;
            border-color: rgba(30, 94, 255, 0.5);
        }

        /* ===== Content Card ===== */
        .content-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.2s ease;
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .content-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.25);
            box-shadow: 0 0 20px rgba(0, 200, 255, 0.25);
        }
        .content-card .cc-cover {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            position: relative;
        }
        .content-card .cc-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s;
        }
        .content-card:hover .cc-cover img {
            transform: scale(1.05);
        }
        .cc-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .cc-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin: 0 0 8px;
            line-height: 1.45;
        }
        .cc-body p {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0 0 14px;
            line-height: 1.7;
            flex: 1;
        }
        .cc-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .cc-meta .tag {
            background: rgba(30, 94, 255, 0.2);
            color: #B8D0FF;
            border-radius: 999px;
            padding: 3px 10px;
            font-size: 11px;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.2s;
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.25);
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            background: transparent;
            border: none;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 500;
            text-align: left;
            transition: all 0.2s;
        }
        .faq-question:hover {
            color: #fff;
        }
        .faq-icon {
            font-size: 22px;
            font-weight: 300;
            color: var(--accent);
            transition: transform 0.3s;
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.75;
        }
        .faq-answer p {
            margin: 0 0 12px;
        }
        .faq-answer p:last-child {
            margin-bottom: 0;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding-bottom: 20px;
        }
        @media (max-width: 640px) {
            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 18px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background:
                linear-gradient(rgba(10, 15, 30, 0.85), rgba(14, 23, 48, 0.9)),
                url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            padding: 80px 0;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .cta-section h2 {
            font-size: 32px;
            font-weight: 700;
            margin: 0 0 14px;
            line-height: 1.3;
        }
        .cta-section p {
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 32px;
            font-size: 16px;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 32px;
        }
        .subscribe-form {
            display: flex;
            max-width: 440px;
            margin: 0 auto;
            gap: 10px;
        }
        .subscribe-form input {
            flex: 1;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 12px;
            padding: 12px 16px;
            color: #fff;
            font-size: 14px;
            transition: all 0.2s;
        }
        .subscribe-form input::placeholder {
            color: var(--text-muted);
        }
        .subscribe-form input:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.15);
        }
        @media (max-width: 640px) {
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .subscribe-form {
                flex-direction: column;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0A0F1E;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand .logo-text {
            font-size: 24px;
        }
        .footer-brand p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
            margin: 12px 0 16px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: var(--text-secondary);
            font-size: 14px;
            transition: all 0.2s;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-social {
            display: flex;
            gap: 10px;
            margin-top: 16px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 15px;
            transition: all 0.2s;
        }
        .footer-social a:hover {
            color: #fff;
            border-color: rgba(0, 229, 160, 0.5);
            background: rgba(0, 229, 160, 0.1);
        }
        .footer-contact p {
            color: var(--text-secondary);
            font-size: 14px;
            margin: 0 0 10px;
        }
        .footer-contact i {
            color: var(--accent);
            margin-right: 8px;
            width: 16px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            transition: all 0.2s;
        }
        .footer-bottom a:hover {
            color: var(--text-secondary);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
    :root {
        --bg-top: #0A0F1E;
        --bg-bottom: #0E1730;
        --primary: #1E5EFF;
        --secondary: #00E5A0;
        --accent: #00C8FF;
        --text-main: #F0F4FF;
        --text-sub: #A7B4D4;
        --text-weak: #6C7A9E;
        --border-color: rgba(255, 255, 255, 0.12);
        --border-hover: rgba(255, 255, 255, 0.25);
        --card-bg: rgba(255, 255, 255, 0.05);
        --radius-card: 16px;
        --radius-btn: 12px;
        --radius-pill: 999px;
        --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
        --shadow-hover: 0 0 24px rgba(30, 94, 255, 0.35);
        --font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        --section-space: 80px;
        --container-width: 1200px;
        --gradient-primary: linear-gradient(90deg, #1E5EFF, #00C8FF);
    }

    /* ===== Reset / Base ===== */
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font-family);
        color: var(--text-main);
        line-height: 1.75;
        background: linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
        min-height: 100vh;
        -webkit-font-smoothing: antialiased;
    }
    img {
        display: block;
        max-width: 100%;
    }
    a {
        color: inherit;
        text-decoration: none;
        transition: color 0.2s ease;
    }
    button {
        font-family: inherit;
        cursor: pointer;
        border: none;
        background: none;
    }
    input {
        font-family: inherit;
        outline: none;
        border: none;
    }
    ul,
    ol {
        list-style: none;
    }

    /* ===== 容器 ===== */
    .container {
        width: 100%;
        max-width: var(--container-width);
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ===== 按钮系统 ===== */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        font-size: 15px;
        font-weight: 500;
        line-height: 1;
        padding: 14px 28px;
        border-radius: var(--radius-btn);
        transition: all 0.2s ease;
        white-space: nowrap;
    }
    .btn-primary {
        background: var(--gradient-primary);
        color: #fff;
        box-shadow: 0 4px 18px rgba(30, 94, 255, 0.35);
    }
    .btn-primary:hover {
        filter: brightness(1.15);
        box-shadow: 0 0 28px rgba(30, 94, 255, 0.5);
        transform: translateY(-1px);
    }
    .btn-primary:active {
        transform: translateY(0);
    }
    .btn-ghost {
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.15);
        color: var(--text-main);
        backdrop-filter: blur(8px);
    }
    .btn-ghost:hover {
        border-color: rgba(255, 255, 255, 0.35);
        background: rgba(255, 255, 255, 0.14);
        box-shadow: 0 0 18px rgba(0, 229, 160, 0.12);
    }
    .btn-primary:focus-visible,
    .btn-ghost:focus-visible {
        outline: 2px solid var(--secondary);
        outline-offset: 3px;
    }
    .btn-header {
        padding: 10px 20px;
        font-size: 14px;
    }

    /* ===== 玻璃卡片 ===== */
    .glass-card {
        background: var(--card-bg);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-card);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        transition: all 0.2s ease;
    }
    .glass-card:hover {
        border-color: var(--border-hover);
        transform: translateY(-3px);
        box-shadow: var(--shadow-hover);
    }

    /* ===== Header / 双层导航 ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 100;
        background: rgba(10, 15, 30, 0.85);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .header-row {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding-top: 16px;
        padding-bottom: 16px;
        gap: 24px;
    }
    .brand {
        display: flex;
        flex-direction: column;
        line-height: 1.2;
        gap: 2px;
        flex-shrink: 0;
    }
    .brand-name {
        font-size: 22px;
        font-weight: 700;
        color: var(--text-main);
        letter-spacing: 1px;
    }
    .brand-name::before {
        content: "";
        display: inline-block;
        width: 8px;
        height: 8px;
        border-radius: 2px;
        margin-right: 8px;
        background: var(--gradient-primary);
        vertical-align: 2px;
    }
    .brand-sub {
        font-size: 10px;
        letter-spacing: 2.5px;
        color: var(--text-sub);
        text-transform: uppercase;
        padding-left: 16px;
    }
    .header-actions {
        display: flex;
        align-items: center;
        gap: 16px;
    }
    .header-search {
        display: flex;
        align-items: center;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.15);
        border-radius: var(--radius-pill);
        padding: 0 16px;
        transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }
    .header-search:focus-within {
        border-color: var(--secondary);
        box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.15);
    }
    .search-input {
        background: transparent;
        border: none;
        color: var(--text-main);
        font-size: 14px;
        padding: 9px 0;
        width: 180px;
    }
    .search-input::placeholder {
        color: var(--text-weak);
    }
    .search-icon {
        color: var(--text-sub);
        font-size: 14px;
        margin-left: 8px;
    }
    .menu-toggle {
        display: none;
        flex-direction: column;
        gap: 5px;
        padding: 8px;
        border-radius: 8px;
    }
    .menu-toggle span {
        display: block;
        width: 20px;
        height: 2px;
        background: var(--text-main);
        border-radius: 2px;
        transition: transform 0.3s ease, opacity 0.3s ease;
    }
    .main-nav {
        border-top: 1px solid rgba(255, 255, 255, 0.06);
    }
    .nav-tabs {
        display: flex;
        gap: 6px;
        padding: 8px 0 10px;
        overflow-x: auto;
        scrollbar-width: none;
    }
    .nav-tabs::-webkit-scrollbar {
        display: none;
    }
    .nav-tab {
        position: relative;
        flex-shrink: 0;
        padding: 10px 22px;
        font-size: 15px;
        color: var(--text-sub);
        border-radius: var(--radius-pill);
        transition: all 0.2s ease;
        text-align: center;
    }
    .nav-tab:hover {
        color: var(--text-main);
        background: rgba(255, 255, 255, 0.06);
        border-bottom-color: transparent;
    }
    .nav-tab.active {
        color: var(--text-main);
        background: rgba(30, 94, 255, 0.2);
        border-bottom: 2px solid var(--primary);
        box-shadow: 0 2px 12px rgba(30, 94, 255, 0.3);
    }

    /* ===== 页面 Banner ===== */
    .page-banner {
        position: relative;
        background-image: url('/assets/images/backpic/back-1.png');
        background-size: cover;
        background-position: center;
        padding: 90px 0 84px;
        overflow: hidden;
    }
    .banner-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(10, 15, 30, 0.82) 0%, rgba(10, 15, 30, 0.68) 50%, rgba(14, 23, 48, 0.92) 100%);
        pointer-events: none;
    }
    .banner-content {
        position: relative;
        z-index: 2;
        text-align: center;
        max-width: 760px;
        margin: 0 auto;
    }
    .breadcrumb {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 13px;
        color: var(--text-sub);
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.1);
        padding: 6px 18px;
        border-radius: var(--radius-pill);
        margin-bottom: 28px;
        backdrop-filter: blur(8px);
    }
    .breadcrumb a {
        color: var(--text-sub);
        transition: color 0.2s;
    }
    .breadcrumb a:hover {
        color: var(--secondary);
    }
    .breadcrumb .sep {
        color: var(--text-weak);
        font-size: 11px;
    }
    .page-banner h1 {
        font-size: 46px;
        font-weight: 700;
        line-height: 1.2;
        margin-bottom: 18px;
        color: var(--text-main);
    }
    .page-banner h1 span {
        background: linear-gradient(135deg, #fff, #A9C4FF);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }
    .banner-desc {
        font-size: 17px;
        color: var(--text-sub);
        line-height: 1.8;
        margin-bottom: 32px;
    }
    .banner-actions {
        display: flex;
        justify-content: center;
        gap: 14px;
        flex-wrap: wrap;
    }

    /* ===== 通用板块 ===== */
    .section {
        padding: var(--section-space) 0;
    }
    .section-alt {
        background: rgba(255, 255, 255, 0.02);
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .section-head {
        text-align: center;
        max-width: 700px;
        margin: 0 auto 52px;
    }
    .section-tag {
        display: inline-block;
        font-size: 12px;
        font-weight: 600;
        letter-spacing: 1px;
        color: #B8D0FF;
        background: rgba(30, 94, 255, 0.2);
        border: 1px solid rgba(30, 94, 255, 0.3);
        padding: 6px 18px;
        border-radius: var(--radius-pill);
        margin-bottom: 16px;
    }
    .section-head h2 {
        font-size: 32px;
        font-weight: 600;
        line-height: 1.35;
        margin-bottom: 16px;
        color: var(--text-main);
    }
    .section-head p {
        font-size: 16px;
        color: var(--text-sub);
        line-height: 1.8;
    }

    /* ===== 服务介绍 ===== */
    .service-intro-grid {
        display: grid;
        grid-template-columns: 1.1fr 1fr;
        gap: 48px;
        align-items: center;
    }
    .intro-image-wrap {
        position: relative;
        border-radius: var(--radius-card);
        overflow: hidden;
        border: 1px solid var(--border-color);
        box-shadow: var(--shadow-card);
    }
    .intro-image {
        width: 100%;
        height: 420px;
        object-fit: cover;
        transition: transform 0.4s ease;
    }
    .intro-image-wrap:hover .intro-image {
        transform: scale(1.03);
    }
    .intro-image-badge {
        position: absolute;
        left: 20px;
        bottom: 20px;
        background: rgba(10, 15, 30, 0.72);
        border: 1px solid rgba(255, 255, 255, 0.18);
        backdrop-filter: blur(12px);
        border-radius: var(--radius-card);
        padding: 14px 22px;
        color: var(--text-main);
        font-size: 14px;
        font-weight: 600;
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .intro-image-badge i {
        color: var(--secondary);
        font-size: 20px;
    }
    .intro-content h3 {
        font-size: 26px;
        font-weight: 600;
        line-height: 1.4;
        margin-bottom: 18px;
        color: var(--text-main);
    }
    .intro-content > p {
        font-size: 16px;
        color: var(--text-sub);
        line-height: 1.8;
        margin-bottom: 24px;
    }
    .intro-list {
        display: flex;
        flex-direction: column;
        gap: 14px;
        margin-bottom: 28px;
    }
    .intro-list li {
        display: flex;
        align-items: flex-start;
        gap: 12px;
        font-size: 15px;
        color: var(--text-main);
        line-height: 1.6;
    }
    .intro-list li i {
        color: var(--secondary);
        font-size: 16px;
        margin-top: 3px;
        flex-shrink: 0;
    }

    /* ===== 时间线 ===== */
    .timeline {
        position: relative;
        max-width: 880px;
        margin: 0 auto;
        padding: 8px 0 8px 0;
    }
    .timeline::before {
        content: "";
        position: absolute;
        left: 31px;
        top: 16px;
        bottom: 16px;
        width: 2px;
        background: linear-gradient(180deg, transparent, var(--primary) 15%, var(--accent) 50%, rgba(255, 255, 255, 0.1) 90%);
    }
    .timeline-item {
        position: relative;
        display: flex;
        align-items: flex-start;
        gap: 28px;
        padding-bottom: 36px;
    }
    .timeline-item:last-child {
        padding-bottom: 0;
    }
    .timeline-node {
        position: relative;
        z-index: 2;
        flex: 0 0 56px;
        width: 56px;
        height: 56px;
        border-radius: 50%;
        background: rgba(30, 94, 255, 0.2);
        border: 1px solid rgba(30, 94, 255, 0.5);
        color: var(--secondary);
        font-size: 16px;
        font-weight: 700;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 0 18px rgba(0, 229, 160, 0.18);
        backdrop-filter: blur(8px);
    }
    .timeline-card {
        flex: 1;
        background: var(--card-bg);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-card);
        padding: 24px 28px;
        backdrop-filter: blur(10px);
        transition: all 0.2s ease;
    }
    .timeline-card:hover {
        border-color: var(--border-hover);
        transform: translateY(-2px);
        box-shadow: 0 0 22px rgba(30, 94, 255, 0.2);
    }
    .timeline-card h3 {
        font-size: 20px;
        font-weight: 600;
        color: var(--text-main);
        margin-bottom: 6px;
    }
    .timeline-card p {
        font-size: 15px;
        color: var(--text-sub);
        line-height: 1.7;
    }

    /* ===== 企业类型卡片 ===== */
    .company-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }
    .company-card {
        position: relative;
        border-radius: var(--radius-card);
        overflow: hidden;
        min-height: 300px;
        display: flex;
        align-items: flex-end;
        border: 1px solid var(--border-color);
        transition: all 0.25s ease;
        box-shadow: var(--shadow-card);
    }
    .company-card-img {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }
    .company-card:hover .company-card-img {
        transform: scale(1.06);
    }
    .company-card-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(10, 15, 30, 0.25) 0%, rgba(10, 15, 30, 0.85) 100%);
        transition: background 0.3s ease;
    }
    .company-card:hover .company-card-overlay {
        background: linear-gradient(180deg, rgba(10, 15, 30, 0.15) 0%, rgba(10, 15, 30, 0.8) 100%);
    }
    .company-card-body {
        position: relative;
        z-index: 2;
        padding: 24px;
    }
    .company-card-body i {
        display: inline-block;
        font-size: 20px;
        color: var(--secondary);
        margin-bottom: 10px;
        background: rgba(0, 229, 160, 0.12);
        border-radius: 10px;
        padding: 8px;
    }
    .company-card-body h3 {
        font-size: 18px;
        font-weight: 600;
        color: var(--text-main);
        margin-bottom: 8px;
    }
    .company-card-body p {
        font-size: 14px;
        color: rgba(240, 244, 255, 0.82);
        line-height: 1.7;
    }

    /* ===== 服务优势 ===== */
    .advantages-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }
    .advantage-item {
        padding: 36px 30px;
        border-radius: var(--radius-card);
        background: var(--card-bg);
        border: 1px solid var(--border-color);
        backdrop-filter: blur(10px);
        transition: all 0.2s ease;
        text-align: center;
    }
    .advantage-item:hover {
        border-color: var(--border-hover);
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
    }
    .advantage-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 56px;
        height: 56px;
        border-radius: 14px;
        background: linear-gradient(135deg, rgba(30, 94, 255, 0.25), rgba(0, 200, 255, 0.2));
        border: 1px solid rgba(30, 94, 255, 0.4);
        color: var(--accent);
        font-size: 22px;
        margin-bottom: 18px;
    }
    .advantage-item h3 {
        font-size: 20px;
        font-weight: 600;
        margin-bottom: 12px;
        color: var(--text-main);
    }
    .advantage-item p {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.8;
    }

    /* ===== CTA 区 ===== */
    .cta-panel {
        position: relative;
        border-radius: 24px;
        overflow: hidden;
        margin: 0 24px 40px;
        background-image: url('/assets/images/backpic/back-2.png');
        background-size: cover;
        background-position: center;
        border: 1px solid var(--border-color);
        box-shadow: var(--shadow-card);
    }
    .cta-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(120deg, rgba(10, 15, 30, 0.92), rgba(14, 23, 48, 0.78), rgba(30, 94, 255, 0.35));
    }
    .cta-content {
        position: relative;
        z-index: 2;
        padding: 68px 48px;
        text-align: center;
        max-width: 680px;
        margin: 0 auto;
    }
    .cta-content h2 {
        font-size: 32px;
        font-weight: 700;
        line-height: 1.35;
        margin-bottom: 16px;
        color: var(--text-main);
    }
    .cta-content > p {
        font-size: 16px;
        color: var(--text-sub);
        margin-bottom: 28px;
        line-height: 1.7;
    }
    .cta-form {
        display: flex;
        gap: 12px;
        justify-content: center;
        flex-wrap: wrap;
        margin-bottom: 18px;
    }
    .cta-form input {
        flex: 1 1 260px;
        max-width: 340px;
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.18);
        border-radius: var(--radius-btn);
        padding: 14px 18px;
        color: var(--text-main);
        font-size: 14px;
        transition: border-color 0.2s, box-shadow 0.2s;
    }
    .cta-form input::placeholder {
        color: var(--text-weak);
    }
    .cta-form input:focus {
        border-color: var(--secondary);
        box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.15);
    }
    .cta-note {
        font-size: 13px;
        color: var(--text-sub);
    }

    /* ===== Footer ===== */
    .site-footer {
        background: rgba(7, 11, 22, 0.9);
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding: 64px 0 0;
        margin-top: 40px;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1.2fr;
        gap: 40px;
        padding-bottom: 40px;
    }
    .footer-brand .logo-text {
        font-size: 24px;
        font-weight: 700;
        color: var(--text-main);
        display: block;
        margin-bottom: 4px;
    }
    .footer-brand p {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.8;
        margin-bottom: 16px;
    }
    .footer-social {
        display: flex;
        gap: 10px;
    }
    .footer-social a {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: 10px;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.1);
        color: var(--text-sub);
        font-size: 15px;
        transition: all 0.2s ease;
    }
    .footer-social a:hover {
        color: var(--text-main);
        background: rgba(30, 94, 255, 0.2);
        border-color: rgba(30, 94, 255, 0.4);
    }
    .footer-title {
        font-size: 16px;
        font-weight: 600;
        color: var(--text-main);
        margin-bottom: 14px;
    }
    .footer-links {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
    .footer-links a {
        font-size: 14px;
        color: var(--text-sub);
        transition: color 0.2s;
    }
    .footer-links a:hover {
        color: var(--secondary);
    }
    .footer-contact p {
        font-size: 14px;
        color: var(--text-sub);
        margin-bottom: 10px;
    }
    .footer-contact i {
        width: 20px;
        color: var(--accent);
        margin-right: 4px;
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding: 20px 0;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 10px;
    }
    .footer-copyright {
        font-size: 13px;
        color: var(--text-weak);
    }
    .footer-icp a {
        font-size: 13px;
        color: var(--text-weak);
        transition: color 0.2s;
    }
    .footer-icp a:hover {
        color: var(--text-sub);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        :root {
            --section-space: 60px;
        }
        .company-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .advantages-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .search-input {
            width: 130px;
        }
    }
    @media (max-width: 768px) {
        .menu-toggle {
            display: flex;
        }
        .header-search {
            display: none;
        }
        .main-nav {
            display: none;
            border-top: none;
        }
        .main-nav.open {
            display: block;
            padding-bottom: 12px;
        }
        .nav-tabs {
            flex-direction: column;
            gap: 4px;
            overflow: visible;
            padding: 8px 0;
        }
        .nav-tab {
            text-align: left;
            padding: 12px 20px;
            border-radius: var(--radius-btn);
        }
        .nav-tab.active {
            border-bottom: none;
        }
        .page-banner {
            padding: 60px 0;
        }
        .page-banner h1 {
            font-size: 30px;
        }
        .banner-desc {
            font-size: 15px;
        }
        .service-intro-grid {
            grid-template-columns: 1fr;
            gap: 32px;
        }
        .intro-image {
            height: 300px;
        }
        .timeline {
            max-width: 100%;
        }
        .timeline::before {
            left: 23px;
        }
        .timeline-node {
            flex: 0 0 44px;
            width: 44px;
            height: 44px;
            font-size: 14px;
        }
        .timeline-item {
            gap: 18px;
            padding-bottom: 28px;
        }
        .timeline-card {
            padding: 20px;
        }
        .cta-panel {
            margin: 0 16px 32px;
        }
        .cta-content {
            padding: 48px 24px;
        }
        .cta-content h2 {
            font-size: 24px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 28px;
        }
        .footer-bottom {
            flex-direction: column;
            text-align: center;
        }
    }
    @media (max-width: 520px) {
        .container {
            padding: 0 16px;
        }
        .header-row {
            gap: 12px;
        }
        .btn-header {
            padding: 9px 16px;
            font-size: 13px;
        }
        .page-banner h1 {
            font-size: 26px;
        }
        .banner-actions .btn {
            width: 100%;
        }
        .section-head h2 {
            font-size: 24px;
        }
        .company-grid {
            grid-template-columns: 1fr;
        }
        .advantages-grid {
            grid-template-columns: 1fr;
        }
        .cta-form input,
        .cta-form .btn {
            width: 100%;
            max-width: 100%;
        }
        .intro-content h3 {
            font-size: 22px;
        }
    }