/* roulang page: index */
:root {
            --bg-base: #0a1128;
            --bg-panel: rgba(15, 23, 51, 0.94);
            --bg-panel-2: rgba(16, 26, 61, 0.92);
            --bg-card: rgba(20, 35, 80, 0.64);
            --primary: #1e5bff;
            --primary-hover: #3471ff;
            --accent: #2ec4ff;
            --glow: #6ea8ff;
            --glow-rgb: rgba(46, 196, 255, 0.5);
            --text-main: #f2f6ff;
            --text-sub: #a9badb;
            --text-faint: #7d91b8;
            --border: rgba(142, 174, 255, 0.22);
            --success: #2ee6a8;
            --warning: #ffb547;
            --radius-lg: 16px;
            --radius-md: 12px;
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 16px rgba(46, 196, 255, 0.45);
            --font-sans: 'Microsoft YaHei', 'PingFang SC', 'Noto Sans SC', system-ui, sans-serif;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: var(--bg-base);
            color: var(--text-main);
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.25s ease, text-shadow 0.25s ease;
        }
        a:hover {
            color: #7dd8ff;
            text-shadow: 0 0 8px rgba(46, 196, 255, 0.45);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        input,
        button {
            font-family: var(--font-sans);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .glass-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(46, 196, 255, 0.25);
            border-color: rgba(142, 174, 255, 0.45);
        }
        .glass-card-sm {
            border-radius: var(--radius-md);
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .glass-card-sm:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45), 0 0 14px rgba(46, 196, 255, 0.22);
            border-color: rgba(142, 174, 255, 0.4);
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            box-shadow: var(--shadow-glow);
            transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.15s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.03em;
            min-height: 44px;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 0 26px rgba(46, 196, 255, 0.65);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(46, 196, 255, 0.4);
        }
        .btn-secondary {
            background: transparent;
            color: var(--accent);
            border: 1px solid var(--accent);
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.15s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.03em;
            min-height: 44px;
        }
        .btn-secondary:hover {
            background: rgba(46, 196, 255, 0.12);
            box-shadow: 0 0 16px rgba(46, 196, 255, 0.3);
        }
        .btn-secondary:active {
            transform: translateY(1px);
        }
        .btn-disabled {
            background: rgba(142, 174, 255, 0.08);
            color: #6b7ca0;
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: not-allowed;
            min-height: 44px;
            box-shadow: none;
        }
        .section-pad {
            padding-top: 64px;
            padding-bottom: 64px;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-sub);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .badge-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
            background: rgba(46, 196, 255, 0.12);
            color: var(--accent);
            border: 1px solid rgba(46, 196, 255, 0.3);
            margin-bottom: 10px;
        }
        .nav-link {
            position: relative;
            color: var(--text-sub);
            font-size: 14px;
            font-weight: 500;
            padding: 6px 2px;
            transition: color 0.25s ease;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            box-shadow: 0 0 8px var(--glow-rgb);
            transition: width 0.3s ease;
            border-radius: 2px;
        }
        .nav-link:hover {
            color: var(--text-main);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--accent);
            text-shadow: 0 0 10px rgba(46, 196, 255, 0.4);
        }
        .search-input {
            background: rgba(16, 26, 61, 0.8);
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 8px 14px 8px 36px;
            color: var(--text-main);
            font-size: 13px;
            width: 160px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease, width 0.35s ease;
            outline: none;
            min-height: 38px;
        }
        .search-input::placeholder {
            color: var(--text-faint);
        }
        .search-input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 12px rgba(46, 196, 255, 0.35);
            width: 190px;
        }
        .search-wrapper {
            position: relative;
            display: flex;
            align-items: center;
        }
        .search-wrapper .fa-search {
            position: absolute;
            left: 12px;
            color: var(--text-faint);
            font-size: 13px;
            pointer-events: none;
        }
        .stat-num {
            font-variant-numeric: tabular-nums;
            font-weight: 700;
            color: #fff;
            text-shadow: 0 0 20px rgba(46, 196, 255, 0.5);
        }
        .footer-link {
            color: var(--text-sub);
            font-size: 13px;
            transition: color 0.25s ease;
            display: inline-block;
            padding: 2px 0;
        }
        .footer-link:hover {
            color: var(--accent);
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            transition: background 0.3s ease;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            width: 100%;
            text-align: left;
            background: transparent;
            border: none;
            color: var(--text-main);
            font-size: 15px;
            font-weight: 600;
            padding: 16px 20px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-family: var(--font-sans);
            letter-spacing: 0.02em;
            transition: color 0.25s ease;
            min-height: 52px;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question .fa-chevron-down {
            transition: transform 0.35s ease;
            color: var(--accent);
            font-size: 14px;
            flex-shrink: 0;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s ease, padding 0.35s ease;
            padding: 0 20px;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.8;
        }
        .faq-item.open .fa-chevron-down {
            transform: rotate(180deg);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }
        .form-input {
            background: rgba(16, 26, 61, 0.85);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 12px 16px;
            color: var(--text-main);
            font-size: 14px;
            width: 100%;
            outline: none;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
            min-height: 46px;
            font-family: var(--font-sans);
        }
        .form-input::placeholder {
            color: var(--text-faint);
        }
        .form-input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 14px rgba(46, 196, 255, 0.3);
        }
        .mobile-menu-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-main);
            font-size: 22px;
            cursor: pointer;
            padding: 8px 14px;
            border-radius: 6px;
            transition: background 0.25s ease, border-color 0.25s ease;
            min-height: 44px;
            min-width: 44px;
        }
        .mobile-menu-toggle:hover {
            background: rgba(46, 196, 255, 0.1);
            border-color: var(--accent);
        }
        .hero-bg-overlay {
            background: linear-gradient(135deg, rgba(10, 17, 40, 0.92) 0%, rgba(10, 17, 40, 0.7) 50%, rgba(10, 17, 40, 0.88) 100%);
            position: absolute;
            inset: 0;
            z-index: 1;
        }
        .hero-grid-overlay {
            position: absolute;
            inset: 0;
            z-index: 2;
            background-image: radial-gradient(circle at 30% 40%, rgba(46, 196, 255, 0.06) 0%, transparent 50%), radial-gradient(circle at 70% 70%, rgba(30, 91, 255, 0.08) 0%, transparent 55%), repeating-linear-gradient(0deg, transparent, transparent 59px, rgba(142, 174, 255, 0.04) 60px), repeating-linear-gradient(90deg, transparent, transparent 59px, rgba(142, 174, 255, 0.04) 60px);
            pointer-events: none;
        }
        .data-bar {
            height: 10px;
            border-radius: 5px;
            background: rgba(142, 174, 255, 0.12);
            overflow: hidden;
            margin: 6px 0;
        }
        .data-bar-fill {
            height: 100%;
            border-radius: 5px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            box-shadow: 0 0 10px rgba(46, 196, 255, 0.45);
            transition: width 0.8s ease;
        }
        .data-bar-fill.gold {
            background: linear-gradient(90deg, #f0c040, #ffd700);
            box-shadow: 0 0 10px rgba(255, 215, 0, 0.4);
        }
        .timeline-dot {
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent);
            border: 2px solid var(--bg-base);
            box-shadow: 0 0 12px rgba(46, 196, 255, 0.6);
            position: absolute;
            left: -7px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 3;
        }
        @media (max-width: 1024px) {
            .search-input {
                width: 120px;
            }
            .search-input:focus {
                width: 150px;
            }
        }
        @media (max-width: 768px) {
            .section-pad {
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .section-title {
                font-size: 22px;
            }
            .mobile-menu-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .nav-middle {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-panel);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border);
                padding: 16px 20px;
                flex-direction: column;
                gap: 12px;
                z-index: 100;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
            }
            .nav-middle.open {
                display: flex;
            }
            .nav-right .search-wrapper {
                display: none;
            }
            .nav-right .search-wrapper.mobile-visible {
                display: flex;
                width: 100%;
            }
            .nav-right {
                flex-wrap: wrap;
                gap: 8px;
            }
            .nav-link {
                font-size: 16px;
                padding: 10px 4px;
                border-bottom: 1px solid rgba(142, 174, 255, 0.1);
            }
            .nav-link:last-child {
                border-bottom: none;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .btn-primary,
            .btn-secondary {
                padding: 10px 18px;
                font-size: 14px;
                min-height: 44px;
                width: 100%;
                justify-content: center;
            }
            .hero-title {
                font-size: 26px !important;
                line-height: 1.35 !important;
            }
        }

/* roulang page: category1 */
:root {
            --bg-base: #0a1128;
            --bg-panel: rgba(15, 23, 51, 0.94);
            --bg-panel-2: rgba(16, 26, 61, 0.92);
            --bg-card: rgba(20, 35, 80, 0.64);
            --primary: #1e5bff;
            --primary-hover: #3471ff;
            --accent: #2ec4ff;
            --glow: #6ea8ff;
            --glow-rgb: rgba(46, 196, 255, 0.5);
            --text-main: #f2f6ff;
            --text-sub: #a9badb;
            --text-faint: #7d91b8;
            --border: rgba(142, 174, 255, 0.22);
            --success: #2ee6a8;
            --warning: #ffb547;
            --radius-lg: 16px;
            --radius-md: 12px;
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 16px rgba(46, 196, 255, 0.45);
            --font-sans: 'Microsoft YaHei', 'PingFang SC', 'Noto Sans SC', system-ui, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: var(--bg-base);
            color: var(--text-main);
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.25s ease, text-shadow 0.25s ease;
        }
        a:hover {
            color: #7dd8ff;
            text-shadow: 0 0 8px rgba(46, 196, 255, 0.45);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        input,
        button {
            font-family: var(--font-sans);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .glass-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(46, 196, 255, 0.25);
            border-color: rgba(142, 174, 255, 0.45);
        }
        .glass-card-sm {
            border-radius: var(--radius-md);
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .glass-card-sm:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45), 0 0 14px rgba(46, 196, 255, 0.22);
            border-color: rgba(142, 174, 255, 0.4);
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            box-shadow: var(--shadow-glow);
            transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.15s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.03em;
            min-height: 44px;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 0 26px rgba(46, 196, 255, 0.65);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(46, 196, 255, 0.4);
        }
        .btn-secondary {
            background: transparent;
            color: var(--accent);
            border: 1px solid var(--accent);
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.15s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.03em;
            min-height: 44px;
        }
        .btn-secondary:hover {
            background: rgba(46, 196, 255, 0.12);
            box-shadow: 0 0 16px rgba(46, 196, 255, 0.3);
        }
        .btn-secondary:active {
            transform: translateY(1px);
        }
        .btn-disabled {
            background: rgba(142, 174, 255, 0.08);
            color: #6b7ca0;
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: not-allowed;
            min-height: 44px;
            box-shadow: none;
        }
        .section-pad {
            padding-top: 64px;
            padding-bottom: 64px;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-sub);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .badge-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
            background: rgba(46, 196, 255, 0.12);
            color: var(--accent);
            border: 1px solid rgba(46, 196, 255, 0.3);
            margin-bottom: 10px;
        }
        .nav-link {
            position: relative;
            color: var(--text-sub);
            font-size: 14px;
            font-weight: 500;
            padding: 6px 0;
            transition: color 0.25s ease, text-shadow 0.25s ease;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--accent);
            text-shadow: 0 0 8px rgba(46, 196, 255, 0.5);
        }
        .nav-link.active {
            color: var(--accent);
            text-shadow: 0 0 12px rgba(46, 196, 255, 0.6);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -4px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(46, 196, 255, 0.7);
        }
        .search-wrapper {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(15, 23, 51, 0.7);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 6px 14px;
            min-width: 180px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .search-wrapper:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 16px rgba(46, 196, 255, 0.25);
        }
        .search-wrapper i {
            color: var(--text-faint);
            font-size: 13px;
        }
        .search-input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-main);
            font-size: 13px;
            width: 100%;
            letter-spacing: 0.02em;
        }
        .search-input::placeholder {
            color: var(--text-faint);
        }
        .mobile-menu-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-main);
            border-radius: 8px;
            width: 42px;
            height: 42px;
            font-size: 18px;
            cursor: pointer;
            transition: background 0.25s ease, border-color 0.25s ease;
            align-items: center;
            justify-content: center;
        }
        .mobile-menu-toggle:hover {
            background: rgba(46, 196, 255, 0.1);
            border-color: var(--accent);
        }
        .footer-link {
            color: var(--text-sub);
            font-size: 14px;
            transition: color 0.25s ease, text-shadow 0.25s ease;
        }
        .footer-link:hover {
            color: var(--accent);
            text-shadow: 0 0 8px rgba(46, 196, 255, 0.4);
        }
        .stat-number {
            font-size: 34px;
            font-weight: 700;
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
            color: var(--text-main);
            text-shadow: 0 0 16px rgba(46, 196, 255, 0.4);
        }
        .data-highlight {
            font-size: 28px;
            font-weight: 700;
            font-variant-numeric: tabular-nums;
            line-height: 1.3;
            color: var(--accent);
            text-shadow: 0 0 14px rgba(46, 196, 255, 0.55);
        }
        .info-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(46, 196, 255, 0.08);
            color: var(--text-sub);
            border: 1px solid rgba(46, 196, 255, 0.2);
        }
        .win-chip {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 3px 10px;
            border-radius: 16px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(46, 230, 168, 0.12);
            color: var(--success);
            border: 1px solid rgba(46, 230, 168, 0.3);
        }
        .warning-chip {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 3px 10px;
            border-radius: 16px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(255, 181, 71, 0.12);
            color: var(--warning);
            border: 1px solid rgba(255, 181, 71, 0.3);
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            transition: background 0.25s ease;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            width: 100%;
            text-align: left;
            background: transparent;
            border: none;
            padding: 18px 0;
            color: var(--text-main);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: color 0.25s ease;
            letter-spacing: 0.02em;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question .faq-icon {
            transition: transform 0.3s ease;
            color: var(--accent);
            font-size: 14px;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding-bottom: 0;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 18px;
        }
        .faq-answer p {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.8;
            margin: 0;
        }
        @media (max-width: 1024px) {
            .section-title {
                font-size: 22px;
            }
            .stat-number {
                font-size: 28px;
            }
            .data-highlight {
                font-size: 24px;
            }
            .search-wrapper {
                min-width: 140px;
            }
            .nav-middle {
                gap: 16px;
            }
        }
        @media (max-width: 768px) {
            .section-pad {
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .search-wrapper {
                min-width: 100%;
                order: 2;
            }
            .nav-middle {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(10, 17, 40, 0.98);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
                z-index: 99;
            }
            .nav-middle.mobile-open {
                display: flex;
            }
            .nav-middle .nav-link {
                font-size: 16px;
                padding: 8px 0;
                width: 100%;
                border-bottom: 1px solid rgba(142, 174, 255, 0.1);
            }
            .nav-middle .nav-link.active::after {
                display: none;
            }
            .mobile-menu-toggle {
                display: inline-flex;
            }
            .nav-right .search-wrapper {
                display: none;
            }
            .nav-right.mobile-open .search-wrapper {
                display: flex;
                position: absolute;
                top: 60px;
                left: 20px;
                right: 20px;
                z-index: 100;
                background: rgba(15, 23, 51, 0.98);
            }
            .stat-number {
                font-size: 24px;
            }
            .data-highlight {
                font-size: 20px;
            }
        }
        @media (max-width: 520px) {
            .section-title {
                font-size: 20px;
            }
            .btn-primary,
            .btn-secondary {
                padding: 10px 18px;
                font-size: 14px;
                min-height: 40px;
            }
            .search-input {
                font-size: 12px;
            }
            .badge-tag {
                font-size: 11px;
                padding: 3px 10px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-base: #0a1128;
            --bg-panel: rgba(15, 23, 51, 0.94);
            --bg-panel-2: rgba(16, 26, 61, 0.92);
            --bg-card: rgba(20, 35, 80, 0.64);
            --primary: #1e5bff;
            --primary-hover: #3471ff;
            --accent: #2ec4ff;
            --glow: #6ea8ff;
            --glow-rgb: rgba(46, 196, 255, 0.5);
            --text-main: #f2f6ff;
            --text-sub: #a9badb;
            --text-faint: #7d91b8;
            --border: rgba(142, 174, 255, 0.22);
            --success: #2ee6a8;
            --warning: #ffb547;
            --radius-lg: 16px;
            --radius-md: 12px;
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 16px rgba(46, 196, 255, 0.45);
            --font-sans: 'Microsoft YaHei', 'PingFang SC', 'Noto Sans SC', system-ui, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: var(--bg-base);
            color: var(--text-main);
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.25s ease, text-shadow 0.25s ease;
        }
        a:hover {
            color: #7dd8ff;
            text-shadow: 0 0 8px rgba(46, 196, 255, 0.45);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        input,
        button {
            font-family: var(--font-sans);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .glass-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(46, 196, 255, 0.25);
            border-color: rgba(142, 174, 255, 0.45);
        }
        .glass-card-sm {
            border-radius: var(--radius-md);
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .glass-card-sm:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45), 0 0 14px rgba(46, 196, 255, 0.22);
            border-color: rgba(142, 174, 255, 0.4);
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            box-shadow: var(--shadow-glow);
            transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.15s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.03em;
            min-height: 44px;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 0 26px rgba(46, 196, 255, 0.65);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(46, 196, 255, 0.4);
        }
        .btn-secondary {
            background: transparent;
            color: var(--accent);
            border: 1px solid var(--accent);
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.15s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.03em;
            min-height: 44px;
        }
        .btn-secondary:hover {
            background: rgba(46, 196, 255, 0.12);
            box-shadow: 0 0 16px rgba(46, 196, 255, 0.3);
        }
        .btn-secondary:active {
            transform: translateY(1px);
        }
        .btn-disabled {
            background: rgba(142, 174, 255, 0.08);
            color: #6b7ca0;
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: not-allowed;
            min-height: 44px;
            box-shadow: none;
        }
        .section-pad {
            padding-top: 64px;
            padding-bottom: 64px;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-sub);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .badge-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
            background: rgba(46, 196, 255, 0.12);
            color: var(--accent);
            border: 1px solid rgba(46, 196, 255, 0.3);
            margin-bottom: 10px;
        }
        .nav-link {
            position: relative;
            color: var(--text-sub);
            font-size: 14px;
            font-weight: 500;
            padding: 6px 2px;
            transition: color 0.25s ease, text-shadow 0.25s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--accent);
            text-shadow: 0 0 10px rgba(46, 196, 255, 0.5);
        }
        .nav-link.active {
            color: var(--accent);
            text-shadow: 0 0 10px rgba(46, 196, 255, 0.6);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(46, 196, 255, 0.7);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }
        .nav-link:hover::after {
            transform: scaleX(1);
        }
        .search-wrapper {
            display: flex;
            align-items: center;
            background: rgba(16, 26, 61, 0.85);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 6px 14px;
            gap: 8px;
            min-width: 180px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .search-wrapper:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 12px rgba(46, 196, 255, 0.35);
        }
        .search-wrapper i {
            color: var(--text-faint);
            font-size: 13px;
        }
        .search-input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-main);
            font-size: 13px;
            width: 100%;
            min-height: 26px;
        }
        .search-input::placeholder {
            color: var(--text-faint);
        }
        .mobile-menu-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: 8px;
            color: var(--text-main);
            font-size: 18px;
            width: 40px;
            height: 40px;
            cursor: pointer;
            transition: background 0.25s ease;
        }
        .mobile-menu-toggle:hover {
            background: rgba(46, 196, 255, 0.1);
        }
        .footer-link {
            color: var(--text-sub);
            transition: color 0.25s ease, text-shadow 0.25s ease;
        }
        .footer-link:hover {
            color: var(--accent);
            text-shadow: 0 0 6px rgba(46, 196, 255, 0.4);
        }
        /* 分类页特有样式 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-sub);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-sub);
            transition: color 0.25s ease;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .separator {
            color: var(--text-faint);
            font-size: 10px;
        }
        .breadcrumb .current {
            color: var(--accent);
            font-weight: 500;
        }
        .cat-hero {
            position: relative;
            padding: 56px 0 40px;
            background: linear-gradient(135deg, rgba(10,17,40,0.95) 0%, rgba(16,26,61,0.85) 50%, rgba(10,17,40,0.95) 100%);
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }
        .cat-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/ec527eafeed36ea2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }
        .cat-hero::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(10,17,40,0.4) 0%, rgba(10,17,40,0.9) 100%);
            z-index: 1;
            pointer-events: none;
        }
        .cat-hero .container {
            position: relative;
            z-index: 2;
        }
        .rank-bar {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
        }
        .rank-bar .rank-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--accent);
            text-shadow: 0 0 14px rgba(46, 196, 255, 0.6);
            font-variant-numeric: tabular-nums;
            min-width: 44px;
            line-height: 1;
        }
        .rank-bar .bar-track {
            flex: 1;
            height: 6px;
            background: rgba(142, 174, 255, 0.15);
            border-radius: 3px;
            overflow: hidden;
        }
        .rank-bar .bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 3px;
            transition: width 0.8s ease;
            box-shadow: 0 0 8px rgba(46, 196, 255, 0.5);
        }
        .rank-bar .bar-fill.warning {
            background: linear-gradient(90deg, #f59e0b, var(--warning));
            box-shadow: 0 0 8px rgba(255, 181, 71, 0.5);
        }
        .rank-bar .bar-fill.success {
            background: linear-gradient(90deg, #10b981, var(--success));
            box-shadow: 0 0 8px rgba(46, 230, 168, 0.5);
        }
        .rank-bar .bar-value {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            font-variant-numeric: tabular-nums;
            min-width: 52px;
            text-align: right;
            line-height: 1;
        }
        .data-stat-num {
            font-size: 36px;
            font-weight: 700;
            font-variant-numeric: tabular-nums;
            color: var(--text-main);
            line-height: 1.2;
            letter-spacing: -0.01em;
        }
        .data-stat-num .unit {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-sub);
            margin-left: 4px;
        }
        .compare-panel {
            display: flex;
            align-items: stretch;
            gap: 0;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            background: var(--bg-card);
            backdrop-filter: blur(18px);
        }
        .compare-side {
            flex: 1;
            padding: 24px;
            min-width: 0;
        }
        .compare-divider {
            width: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(10, 17, 40, 0.6);
            border-left: 1px solid var(--border);
            border-right: 1px solid var(--border);
            font-weight: 700;
            font-size: 14px;
            color: var(--accent);
            letter-spacing: 0.05em;
            flex-shrink: 0;
        }
        .topic-entry-card {
            border-radius: var(--radius-md);
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border);
            padding: 20px;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            overflow: hidden;
            position: relative;
            min-height: 160px;
        }
        .topic-entry-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 14px 32px rgba(0, 0, 0, 0.5), 0 0 18px rgba(46, 196, 255, 0.22);
            border-color: rgba(142, 174, 255, 0.4);
        }
        .topic-entry-card .entry-icon {
            font-size: 28px;
            color: var(--accent);
            margin-bottom: 12px;
            text-shadow: 0 0 12px rgba(46, 196, 255, 0.45);
        }
        .topic-entry-card .entry-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .topic-entry-card .entry-desc {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.6;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            transition: background 0.3s ease;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 8px;
            cursor: pointer;
            transition: color 0.25s ease;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text-main);
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.01em;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question .faq-icon {
            color: var(--accent);
            font-size: 14px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-question.active .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 8px;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.8;
        }
        .faq-answer.open {
            max-height: 300px;
            padding-bottom: 18px;
        }
        .form-input {
            background: rgba(16, 26, 61, 0.85);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 12px 16px;
            color: var(--text-main);
            font-size: 14px;
            width: 100%;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
            outline: none;
            min-height: 44px;
        }
        .form-input::placeholder {
            color: var(--text-faint);
        }
        .form-input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 12px rgba(46, 196, 255, 0.35);
        }
        @media (max-width: 1024px) {
            .nav-middle {
                gap: 14px;
            }
            .search-wrapper {
                min-width: 140px;
            }
        }
        @media (max-width: 768px) {
            .nav-middle {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(10, 17, 40, 0.98);
                border-bottom: 1px solid var(--border);
                padding: 16px 20px;
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                z-index: 99;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            }
            .nav-middle.open {
                display: flex;
            }
            .nav-link {
                font-size: 16px;
                padding: 8px 0;
                width: 100%;
                border-bottom: 1px solid rgba(142, 174, 255, 0.1);
            }
            .nav-link:last-child {
                border-bottom: none;
            }
            .nav-link.active::after {
                display: none;
            }
            .nav-link::after {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .search-wrapper {
                min-width: unset;
                width: 100%;
                margin-bottom: 8px;
            }
            .nav-right {
                flex-wrap: wrap;
                justify-content: flex-end;
            }
            .mobile-search-row {
                width: 100%;
                order: -1;
            }
            .compare-panel {
                flex-direction: column;
            }
            .compare-divider {
                width: 100%;
                height: 40px;
                border-left: none;
                border-right: none;
                border-top: 1px solid var(--border);
                border-bottom: 1px solid var(--border);
            }
            .section-pad {
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .section-title {
                font-size: 22px;
            }
            .cat-hero {
                padding: 36px 0 28px;
            }
            .data-stat-num {
                font-size: 28px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .btn-primary,
            .btn-secondary {
                padding: 10px 18px;
                font-size: 14px;
                min-height: 40px;
            }
            .rank-bar .rank-num {
                font-size: 22px;
                min-width: 32px;
            }
            .rank-bar .bar-value {
                font-size: 14px;
                min-width: 40px;
            }
            .badge-tag {
                font-size: 11px;
                padding: 3px 10px;
            }
            .section-title {
                font-size: 20px;
            }
            .form-input {
                font-size: 13px;
                padding: 10px 14px;
                min-height: 40px;
            }
        }

/* roulang page: category4 */
:root {
            --bg-base: #0a1128;
            --bg-panel: rgba(15, 23, 51, 0.94);
            --bg-panel-2: rgba(16, 26, 61, 0.92);
            --bg-card: rgba(20, 35, 80, 0.64);
            --primary: #1e5bff;
            --primary-hover: #3471ff;
            --accent: #2ec4ff;
            --glow: #6ea8ff;
            --glow-rgb: rgba(46, 196, 255, 0.5);
            --text-main: #f2f6ff;
            --text-sub: #a9badb;
            --text-faint: #7d91b8;
            --border: rgba(142, 174, 255, 0.22);
            --success: #2ee6a8;
            --warning: #ffb547;
            --radius-lg: 16px;
            --radius-md: 12px;
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 16px rgba(46, 196, 255, 0.45);
            --font-sans: 'Microsoft YaHei', 'PingFang SC', 'Noto Sans SC', system-ui, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: var(--bg-base);
            color: var(--text-main);
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.25s ease, text-shadow 0.25s ease;
        }
        a:hover {
            color: #7dd8ff;
            text-shadow: 0 0 8px rgba(46, 196, 255, 0.45);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        input,
        button {
            font-family: var(--font-sans);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .glass-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(46, 196, 255, 0.25);
            border-color: rgba(142, 174, 255, 0.45);
        }
        .glass-card-sm {
            border-radius: var(--radius-md);
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .glass-card-sm:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45), 0 0 14px rgba(46, 196, 255, 0.22);
            border-color: rgba(142, 174, 255, 0.4);
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            box-shadow: var(--shadow-glow);
            transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.15s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.03em;
            min-height: 44px;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 0 26px rgba(46, 196, 255, 0.65);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(46, 196, 255, 0.4);
        }
        .btn-secondary {
            background: transparent;
            color: var(--accent);
            border: 1px solid var(--accent);
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.15s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.03em;
            min-height: 44px;
        }
        .btn-secondary:hover {
            background: rgba(46, 196, 255, 0.12);
            box-shadow: 0 0 16px rgba(46, 196, 255, 0.3);
        }
        .btn-secondary:active {
            transform: translateY(1px);
        }
        .btn-disabled {
            background: rgba(142, 174, 255, 0.08);
            color: #6b7ca0;
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: not-allowed;
            min-height: 44px;
            box-shadow: none;
        }
        .section-pad {
            padding-top: 64px;
            padding-bottom: 64px;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-sub);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .badge-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
            background: rgba(46, 196, 255, 0.12);
            color: var(--accent);
            border: 1px solid rgba(46, 196, 255, 0.3);
            margin-bottom: 10px;
        }
        .nav-link {
            position: relative;
            color: var(--text-sub);
            font-size: 14px;
            font-weight: 500;
            padding: 6px 0;
            transition: color 0.25s ease, text-shadow 0.25s ease;
            letter-spacing: 0.02em;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transition: width 0.3s ease, box-shadow 0.3s ease;
            box-shadow: 0 0 8px rgba(46, 196, 255, 0.6);
        }
        .nav-link:hover {
            color: var(--text-main);
            text-shadow: 0 0 6px rgba(46, 196, 255, 0.35);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--accent);
            text-shadow: 0 0 8px rgba(46, 196, 255, 0.5);
        }
        .nav-link.active::after {
            width: 100%;
            box-shadow: 0 0 12px rgba(46, 196, 255, 0.8);
        }
        .search-wrapper {
            position: relative;
            display: flex;
            align-items: center;
        }
        .search-wrapper i {
            position: absolute;
            left: 12px;
            color: var(--text-faint);
            font-size: 13px;
            pointer-events: none;
        }
        .search-input {
            background: rgba(20, 35, 80, 0.55);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 8px 12px 8px 32px;
            color: var(--text-main);
            font-size: 13px;
            width: 180px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
            min-height: 36px;
        }
        .search-input::placeholder {
            color: var(--text-faint);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 12px rgba(46, 196, 255, 0.35);
            background: rgba(20, 35, 80, 0.75);
        }
        .mobile-menu-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: 8px;
            color: var(--text-main);
            padding: 8px 12px;
            font-size: 16px;
            cursor: pointer;
            transition: background 0.25s ease, border-color 0.25s ease;
            min-height: 38px;
        }
        .mobile-menu-toggle:hover {
            background: rgba(46, 196, 255, 0.1);
            border-color: var(--accent);
        }
        .footer-link {
            color: var(--text-sub);
            transition: color 0.25s ease, text-shadow 0.25s ease;
        }
        .footer-link:hover {
            color: var(--accent);
            text-shadow: 0 0 8px rgba(46, 196, 255, 0.45);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-faint);
            margin-bottom: 12px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-sub);
            transition: color 0.25s ease;
        }
        .breadcrumb a:hover {
            color: var(--accent);
            text-shadow: none;
        }
        .breadcrumb .sep {
            color: var(--border);
        }
        .breadcrumb .current {
            color: var(--accent);
            font-weight: 500;
        }
        .article-card {
            display: flex;
            gap: 18px;
            padding: 16px;
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            align-items: stretch;
        }
        .article-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45), 0 0 14px rgba(46, 196, 255, 0.22);
            border-color: rgba(142, 174, 255, 0.4);
        }
        .article-card .article-img {
            flex-shrink: 0;
            width: 140px;
            border-radius: 8px;
            overflow: hidden;
            min-height: 100px;
        }
        .article-card .article-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }
        .article-card .article-body {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--text-faint);
            margin-bottom: 6px;
            flex-wrap: wrap;
        }
        .article-meta .tag {
            background: rgba(46, 196, 255, 0.12);
            border: 1px solid rgba(46, 196, 255, 0.3);
            color: var(--accent);
            padding: 2px 10px;
            border-radius: 14px;
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .tactic-data-bar {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 14px;
        }
        .tactic-data-bar .bar-label {
            flex-shrink: 0;
            width: 90px;
            font-size: 13px;
            color: var(--text-sub);
            text-align: right;
            font-weight: 500;
        }
        .tactic-data-bar .bar-track {
            flex: 1;
            height: 10px;
            background: rgba(142, 174, 255, 0.1);
            border-radius: 6px;
            overflow: hidden;
            position: relative;
        }
        .tactic-data-bar .bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 6px;
            box-shadow: 0 0 10px rgba(46, 196, 255, 0.5);
            transition: width 0.8s ease;
        }
        .tactic-data-bar .bar-value {
            flex-shrink: 0;
            font-size: 14px;
            font-weight: 700;
            color: var(--accent);
            font-variant-numeric: tabular-nums;
            min-width: 48px;
            text-align: left;
        }
        .topic-link-card {
            display: block;
            padding: 18px 20px;
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            min-height: 120px;
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .topic-link-card:hover {
            transform: translateY(-3px);
            border-color: rgba(46, 196, 255, 0.5);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45), 0 0 16px rgba(46, 196, 255, 0.25);
        }
        .topic-link-card .topic-icon {
            font-size: 28px;
            color: var(--accent);
            flex-shrink: 0;
            width: 50px;
            height: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(46, 196, 255, 0.1);
            border-radius: 12px;
            border: 1px solid rgba(46, 196, 255, 0.3);
        }
        .subscribe-box {
            background: linear-gradient(135deg, rgba(30, 91, 255, 0.15), rgba(46, 196, 255, 0.08));
            border: 1px solid rgba(142, 174, 255, 0.3);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            position: relative;
            overflow: hidden;
        }
        .subscribe-box::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(46, 196, 255, 0.12), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .form-input {
            background: rgba(15, 23, 51, 0.75);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 10px 16px;
            color: var(--text-main);
            font-size: 14px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
            width: 100%;
            min-height: 44px;
        }
        .form-input::placeholder {
            color: var(--text-faint);
        }
        .form-input:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 12px rgba(46, 196, 255, 0.35);
        }
        .comment-item {
            display: flex;
            gap: 14px;
            padding: 16px 18px;
            background: rgba(20, 35, 80, 0.4);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            transition: background 0.25s ease, border-color 0.25s ease;
        }
        .comment-item:hover {
            background: rgba(20, 35, 80, 0.6);
            border-color: rgba(142, 174, 255, 0.4);
        }
        .comment-avatar {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 16px;
        }
        .comment-avatar.is-alt {
            background: linear-gradient(135deg, #2ee6a8, #1e5bff);
        }
        .comment-avatar.is-warm {
            background: linear-gradient(135deg, #ffb547, #1e5bff);
        }
        .divider-line {
            height: 1px;
            background: var(--border);
            margin: 24px 0;
        }

        @media (max-width: 1024px) {
            .nav-middle {
                gap: 16px;
            }
            .search-input {
                width: 140px;
            }
            .section-pad {
                padding-top: 48px;
                padding-bottom: 48px;
            }
        }
        @media (max-width: 768px) {
            .nav-middle {
                display: none !important;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(10, 17, 40, 0.96);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                border-bottom: 1px solid var(--border);
                padding: 16px 20px;
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                z-index: 60;
                box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
            }
            .nav-middle.mobile-open {
                display: flex !important;
            }
            .nav-right {
                gap: 8px;
            }
            .nav-right .search-wrapper {
                display: none;
            }
            .mobile-menu-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .btn-secondary,
            .btn-primary {
                padding: 8px 14px;
                font-size: 13px;
                gap: 4px;
            }
            .section-title {
                font-size: 22px;
            }
            .article-card {
                flex-direction: column;
                gap: 12px;
                padding: 14px;
            }
            .article-card .article-img {
                width: 100%;
                min-height: 160px;
                max-height: 200px;
            }
            .article-card .article-img img {
                height: 160px;
                object-fit: cover;
            }
            .tactic-data-bar .bar-label {
                width: 70px;
                font-size: 12px;
            }
            .subscribe-box {
                padding: 24px 18px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .section-pad {
                padding-top: 36px;
                padding-bottom: 36px;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .search-input {
                width: 100%;
            }
            .article-meta {
                font-size: 11px;
                gap: 6px;
            }
            .topic-link-card {
                padding: 14px 16px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-base: #0a1128;
            --bg-panel: rgba(15, 23, 51, 0.94);
            --bg-panel-2: rgba(16, 26, 61, 0.92);
            --bg-card: rgba(20, 35, 80, 0.64);
            --primary: #1e5bff;
            --primary-hover: #3471ff;
            --accent: #2ec4ff;
            --glow: #6ea8ff;
            --glow-rgb: rgba(46, 196, 255, 0.5);
            --text-main: #f2f6ff;
            --text-sub: #a9badb;
            --text-faint: #7d91b8;
            --border: rgba(142, 174, 255, 0.22);
            --success: #2ee6a8;
            --warning: #ffb547;
            --radius-lg: 16px;
            --radius-md: 12px;
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 16px rgba(46, 196, 255, 0.45);
            --font-sans: 'Microsoft YaHei', 'PingFang SC', 'Noto Sans SC', system-ui, sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--bg-base);
            color: var(--text-main);
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.25s ease, text-shadow 0.25s ease;
        }

        a:hover {
            color: #7dd8ff;
            text-shadow: 0 0 8px rgba(46, 196, 255, 0.45);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        input,
        button,
        textarea {
            font-family: var(--font-sans);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .glass-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(46, 196, 255, 0.25);
            border-color: rgba(142, 174, 255, 0.45);
        }

        .glass-card-sm {
            border-radius: var(--radius-md);
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .glass-card-sm:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45), 0 0 14px rgba(46, 196, 255, 0.22);
            border-color: rgba(142, 174, 255, 0.4);
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            box-shadow: var(--shadow-glow);
            transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.15s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.03em;
            min-height: 44px;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 0 26px rgba(46, 196, 255, 0.65);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(46, 196, 255, 0.4);
        }

        .btn-secondary {
            background: transparent;
            color: var(--accent);
            border: 1px solid var(--accent);
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.15s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.03em;
            min-height: 44px;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: rgba(46, 196, 255, 0.12);
            box-shadow: 0 0 16px rgba(46, 196, 255, 0.3);
        }

        .btn-secondary:active {
            transform: translateY(1px);
        }

        .section-pad {
            padding-top: 64px;
            padding-bottom: 64px;
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-sub);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .badge-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
            background: rgba(46, 196, 255, 0.12);
            color: var(--accent);
            border: 1px solid rgba(46, 196, 255, 0.3);
            margin-bottom: 10px;
        }

        .nav-link {
            position: relative;
            color: var(--text-sub);
            font-size: 15px;
            font-weight: 500;
            padding: 4px 2px;
            transition: color 0.25s ease, text-shadow 0.25s ease;
            white-space: nowrap;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transition: width 0.3s ease;
            box-shadow: 0 0 8px var(--glow-rgb);
        }

        .nav-link:hover {
            color: var(--text-main);
            text-shadow: 0 0 8px rgba(46, 196, 255, 0.35);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link.active {
            color: var(--accent);
            text-shadow: 0 0 10px rgba(46, 196, 255, 0.5);
        }

        .nav-link.active::after {
            width: 100%;
        }

        .footer-link {
            color: var(--text-sub);
            font-size: 14px;
            transition: color 0.25s ease, text-shadow 0.25s ease;
        }

        .footer-link:hover {
            color: var(--accent);
            text-shadow: 0 0 8px rgba(46, 196, 255, 0.35);
        }

        .search-wrapper {
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(142, 174, 255, 0.1);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 5px 10px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .search-wrapper:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 12px rgba(46, 196, 255, 0.25);
        }

        .search-wrapper i {
            color: var(--text-faint);
            font-size: 13px;
        }

        .search-input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-main);
            font-size: 13px;
            width: 130px;
            padding: 2px 0;
        }

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

        .mobile-menu-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: 8px;
            color: var(--text-main);
            font-size: 18px;
            padding: 8px 12px;
            cursor: pointer;
            transition: background 0.25s ease, border-color 0.25s ease;
        }

        .mobile-menu-toggle:hover {
            background: rgba(46, 196, 255, 0.12);
            border-color: var(--accent);
        }

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

        .breadcrumb a {
            color: var(--text-sub);
            transition: color 0.25s ease;
        }

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

        .breadcrumb .separator {
            color: var(--text-faint);
            font-size: 11px;
        }

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

        .category-hero {
            position: relative;
            padding-top: 48px;
            padding-bottom: 32px;
            background: linear-gradient(135deg, rgba(20, 35, 80, 0.55) 0%, rgba(10, 17, 40, 0.9) 100%);
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 380px;
            height: 380px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(46, 196, 255, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(30, 91, 255, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .category-hero .container {
            position: relative;
            z-index: 1;
        }

        .category-hero h1 {
            font-size: 36px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-main);
            margin: 10px 0 12px;
            line-height: 1.3;
        }

        .category-hero .hero-desc {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .news-list-card {
            display: flex;
            gap: 18px;
            padding: 16px;
            cursor: pointer;
        }

        .news-list-card .news-img-wrap {
            flex-shrink: 0;
            width: 160px;
            height: 110px;
            border-radius: 10px;
            overflow: hidden;
            position: relative;
            background: rgba(142, 174, 255, 0.08);
        }

        .news-list-card .news-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .news-list-card:hover .news-img-wrap img {
            transform: scale(1.05);
        }

        .news-list-card .news-content {
            flex: 1;
            min-width: 0;
        }

        .news-list-card .news-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
            line-height: 1.5;
            transition: color 0.25s ease;
        }

        .news-list-card:hover .news-title {
            color: var(--accent);
        }

        .news-list-card .news-summary {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
        }

        .news-list-card .news-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 12px;
            color: var(--text-faint);
        }

        .news-list-card .news-meta i {
            font-size: 11px;
            margin-right: 3px;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-cloud a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            background: rgba(46, 196, 255, 0.08);
            border: 1px solid var(--border);
            color: var(--text-sub);
            transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .tag-cloud a:hover {
            background: rgba(46, 196, 255, 0.16);
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: 0 0 14px rgba(46, 196, 255, 0.2);
        }

        .form-input {
            width: 100%;
            background: rgba(142, 174, 255, 0.08);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 12px 16px;
            color: var(--text-main);
            font-size: 14px;
            outline: none;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
            min-height: 44px;
        }

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

        .form-input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 14px rgba(46, 196, 255, 0.25);
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
            transition: background 0.25s ease;
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            gap: 12px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            padding: 4px 0;
            transition: color 0.25s ease;
        }

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

        .faq-question .faq-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 8px var(--glow-rgb);
            flex-shrink: 0;
        }

        .faq-answer {
            padding-left: 18px;
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
            margin-top: 6px;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

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

        .heat-bar {
            height: 8px;
            border-radius: 4px;
            background: rgba(142, 174, 255, 0.12);
            overflow: hidden;
            position: relative;
        }

        .heat-bar .bar-fill {
            height: 100%;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transition: width 0.6s ease;
            box-shadow: 0 0 12px rgba(46, 196, 255, 0.4);
        }

        .heat-bar.warm .bar-fill {
            background: linear-gradient(90deg, #ffb547, #ff8c42);
            box-shadow: 0 0 12px rgba(255, 181, 71, 0.4);
        }

        @media (max-width: 1024px) {
            .section-pad {
                padding-top: 52px;
                padding-bottom: 52px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .nav-middle {
                gap: 14px !important;
            }
            .nav-link {
                font-size: 13px;
            }
        }

        @media (max-width: 768px) {
            .section-pad {
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .category-hero {
                padding-top: 36px;
                padding-bottom: 24px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .category-hero .hero-desc {
                font-size: 14px;
            }
            .mobile-menu-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                min-height: 38px;
            }
            .nav-middle {
                display: none !important;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                gap: 10px !important;
                padding: 12px 0;
                order: 10;
            }
            .nav-middle.mobile-open {
                display: flex !important;
            }
            .nav-right {
                flex-wrap: wrap;
            }
            .search-wrapper.mobile-visible {
                width: 100%;
                order: 1;
            }
            .search-input {
                width: 100%;
                flex: 1;
            }
            .nav-right .btn-secondary,
            .nav-right .btn-primary {
                order: 2;
                font-size: 13px;
                padding: 6px 12px !important;
                min-height: 36px;
            }
            .nav-right .mobile-menu-toggle {
                order: 3;
            }
            .news-list-card {
                flex-direction: column;
                gap: 12px;
                padding: 14px;
            }
            .news-list-card .news-img-wrap {
                width: 100%;
                height: 180px;
            }
            .section-title {
                font-size: 22px;
            }
            .btn-primary,
            .btn-secondary {
                font-size: 14px;
                padding: 10px 20px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .category-hero h1 {
                font-size: 22px;
            }
            .news-list-card .news-title {
                font-size: 15px;
            }
            .section-title {
                font-size: 20px;
            }
            .btn-primary,
            .btn-secondary {
                font-size: 13px;
                padding: 8px 16px;
                min-height: 44px;
            }
            .search-wrapper {
                padding: 4px 8px;
            }
            .search-input {
                width: 100%;
            }
        }

/* roulang page: category5 */
:root {
            --bg-base: #0a1128;
            --bg-panel: rgba(15, 23, 51, 0.94);
            --bg-panel-2: rgba(16, 26, 61, 0.92);
            --bg-card: rgba(20, 35, 80, 0.64);
            --primary: #1e5bff;
            --primary-hover: #3471ff;
            --accent: #2ec4ff;
            --glow: #6ea8ff;
            --glow-rgb: rgba(46, 196, 255, 0.5);
            --text-main: #f2f6ff;
            --text-sub: #a9badb;
            --text-faint: #7d91b8;
            --border: rgba(142, 174, 255, 0.22);
            --success: #2ee6a8;
            --warning: #ffb547;
            --radius-lg: 16px;
            --radius-md: 12px;
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 16px rgba(46, 196, 255, 0.45);
            --font-sans: 'Microsoft YaHei', 'PingFang SC', 'Noto Sans SC', system-ui, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: var(--bg-base);
            color: var(--text-main);
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.25s ease, text-shadow 0.25s ease;
        }
        a:hover {
            color: #7dd8ff;
            text-shadow: 0 0 8px rgba(46, 196, 255, 0.45);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        input,
        button,
        textarea,
        select {
            font-family: var(--font-sans);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .glass-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(46, 196, 255, 0.25);
            border-color: rgba(142, 174, 255, 0.45);
        }
        .glass-card-sm {
            border-radius: var(--radius-md);
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .glass-card-sm:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45), 0 0 14px rgba(46, 196, 255, 0.22);
            border-color: rgba(142, 174, 255, 0.4);
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            box-shadow: var(--shadow-glow);
            transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.15s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.03em;
            min-height: 44px;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 0 26px rgba(46, 196, 255, 0.65);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(46, 196, 255, 0.4);
        }
        .btn-secondary {
            background: transparent;
            color: var(--accent);
            border: 1px solid var(--accent);
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.15s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.03em;
            min-height: 44px;
        }
        .btn-secondary:hover {
            background: rgba(46, 196, 255, 0.12);
            box-shadow: 0 0 16px rgba(46, 196, 255, 0.3);
        }
        .btn-secondary:active {
            transform: translateY(1px);
        }
        .section-pad {
            padding-top: 56px;
            padding-bottom: 56px;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-sub);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .badge-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
            background: rgba(46, 196, 255, 0.12);
            color: var(--accent);
            border: 1px solid rgba(46, 196, 255, 0.3);
            margin-bottom: 10px;
        }
        .nav-link {
            position: relative;
            color: var(--text-sub);
            font-size: 14px;
            font-weight: 500;
            padding: 6px 0;
            transition: color 0.25s ease;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), var(--primary));
            border-radius: 2px;
            transition: width 0.3s ease;
        }
        .nav-link:hover {
            color: var(--text-main);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--accent);
        }
        .nav-link.active::after {
            width: 100%;
            background: var(--accent);
            box-shadow: 0 0 8px rgba(46, 196, 255, 0.6);
        }
        .search-wrapper {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(20, 35, 80, 0.55);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 6px 12px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
            min-height: 38px;
        }
        .search-wrapper:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 12px rgba(46, 196, 255, 0.3);
        }
        .search-wrapper i {
            color: var(--text-faint);
            font-size: 13px;
        }
        .search-input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-main);
            font-size: 13px;
            width: 150px;
        }
        .search-input::placeholder {
            color: var(--text-faint);
        }
        .mobile-menu-toggle {
            display: none;
            background: transparent;
            color: var(--text-main);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 8px 10px;
            font-size: 16px;
            cursor: pointer;
            min-height: 38px;
            transition: background 0.25s ease;
        }
        .mobile-menu-toggle:hover {
            background: rgba(46, 196, 255, 0.1);
        }
        .footer-link {
            color: var(--text-sub);
            font-size: 14px;
            transition: color 0.25s ease;
        }
        .footer-link:hover {
            color: var(--accent);
            text-shadow: 0 0 8px rgba(46, 196, 255, 0.35);
        }
        .category-pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 10px;
            background: rgba(20, 35, 80, 0.55);
            border: 1px solid var(--border);
            color: var(--text-sub);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        .category-pill:hover {
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: 0 0 14px rgba(46, 196, 255, 0.25);
            transform: translateY(-2px);
        }
        .category-pill i {
            color: var(--accent);
        }
        .post-interaction {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-faint);
        }
        .post-interaction span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .post-interaction i {
            font-size: 12px;
        }
        .vote-option {
            display: block;
            width: 100%;
            text-align: left;
            background: rgba(20, 35, 80, 0.45);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 10px 16px;
            color: var(--text-main);
            font-size: 14px;
            cursor: pointer;
            transition: all 0.25s ease;
            margin-bottom: 8px;
        }
        .vote-option:hover {
            border-color: var(--accent);
            background: rgba(46, 196, 255, 0.1);
            box-shadow: 0 0 10px rgba(46, 196, 255, 0.2);
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-main);
            font-size: 15px;
            gap: 12px;
            transition: color 0.25s ease;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question i {
            color: var(--accent);
            font-size: 13px;
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-top: 12px;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        @media (max-width: 1024px) {
            .section-pad {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .section-title {
                font-size: 22px;
            }
            .search-input {
                width: 110px;
            }
            .nav-link {
                font-size: 13px;
            }
        }
        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .nav-middle {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(10, 17, 40, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border);
                border-top: 1px solid var(--border);
                box-shadow: 0 16px 32px rgba(0, 0, 0, 0.6);
                padding: 16px 20px;
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                z-index: 50;
            }
            .nav-middle.open {
                display: flex;
            }
            .nav-link {
                font-size: 16px;
                padding: 10px 0;
                width: 100%;
                border-bottom: 1px solid rgba(142, 174, 255, 0.08);
            }
            .nav-link::after {
                display: none;
            }
            .nav-right {
                gap: 6px;
            }
            .mobile-visible {
                display: none;
            }
            .search-wrapper.mobile-visible {
                display: none;
            }
            .btn-primary,
            .btn-secondary {
                padding: 8px 14px;
                font-size: 13px;
                min-height: 38px;
            }
            .section-title {
                font-size: 20px;
            }
            .section-desc {
                font-size: 14px;
            }
        }
        @media (max-width: 640px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .section-pad {
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .section-title {
                font-size: 18px;
            }
            .section-desc {
                font-size: 13px;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-faint);
            margin-bottom: 12px;
        }
        .breadcrumb a {
            color: var(--text-faint);
            transition: color 0.25s ease;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .separator {
            color: var(--text-faint);
            font-size: 11px;
        }
        .breadcrumb .current {
            color: var(--accent);
        }