/* roulang page: index */
:root {
            --brand: #7C5CFF;
            --brand-light: #A78BFF;
            --cyan-accent: #2DE1C2;
            --gold: #FFC857;
            --rose: #FF3D7F;
            --bg-deep: #12101F;
            --bg-card: #1B1830;
            --bg-card2: #242040;
            --border-purple: rgba(167, 139, 255, 0.38);
            --text-primary: #F5F3FF;
            --text-secondary: #A9A4C6;
            --radius-card: 18px;
            --radius-btn: 999px;
            --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.35);
            --transition-base: 200ms ease;
            --container-max: 1200px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-primary);
            font-size: 16px;
            line-height: 1.85;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--cyan-accent);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            display: block;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 16px;
            color: var(--text-primary);
            background-color: var(--bg-card2);
            border: 1px solid var(--border-purple);
            border-radius: 12px;
            padding: 12px 14px;
            width: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        input::placeholder,
        textarea::placeholder {
            color: var(--text-secondary);
            opacity: 0.7;
        }
        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--brand-light);
            box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.22);
            outline: none;
        }
        .container {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        .section-pad {
            padding-top: 4.5rem;
            padding-bottom: 4.5rem;
        }
        .card-base {
            background-color: var(--bg-card);
            border: 1px solid var(--border-purple);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .card-base:hover {
            transform: translateY(-4px);
            border-color: rgba(245, 243, 255, 0.7);
            box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.22), 0 22px 48px rgba(0, 0, 0, 0.42);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background-color: var(--brand);
            color: #ffffff;
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.75rem;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: background-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }
        .btn-primary:hover {
            background-color: var(--brand-light);
            transform: scale(1.02);
            box-shadow: 0 0 24px rgba(124, 92, 255, 0.45);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-purple);
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.75rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: border-color var(--transition-base), color var(--transition-base), transform var(--transition-base);
        }
        .btn-secondary:hover {
            border-color: var(--cyan-accent);
            color: var(--cyan-accent);
            transform: translateY(-2px);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 0.25rem 0.85rem;
            border-radius: 999px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .badge-purple {
            background: rgba(124, 92, 255, 0.18);
            color: var(--brand-light);
            border: 1px solid rgba(124, 92, 255, 0.35);
        }
        .badge-cyan {
            background: rgba(45, 225, 194, 0.14);
            color: var(--cyan-accent);
            border: 1px solid rgba(45, 225, 194, 0.3);
        }
        .badge-gold {
            background: rgba(255, 200, 87, 0.14);
            color: var(--gold);
            border: 1px solid rgba(255, 200, 87, 0.32);
        }
        .badge-rose {
            background: rgba(255, 61, 127, 0.14);
            color: var(--rose);
            border: 1px solid rgba(255, 61, 127, 0.32);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: 0.01em;
            margin-bottom: 0.75rem;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 2.5rem;
            max-width: 720px;
        }
        .mono-num {
            font-family: "DIN Alternate", "Roboto Mono", monospace;
            font-weight: 700;
            letter-spacing: 0.03em;
        }
        .attr-bar {
            height: 6px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.08);
            overflow: hidden;
        }
        .attr-fill {
            height: 100%;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--brand), var(--cyan-accent));
            transition: width 0.6s ease;
        }
        .faq-answer {
            line-height: 1.9;
            color: var(--text-secondary);
        }
        .nav-link {
            position: relative;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 0.4rem 0.2rem;
            transition: color var(--transition-base);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--text-primary);
        }
        .nav-link.active {
            color: var(--cyan-accent);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            border-radius: 2px;
            background: var(--cyan-accent);
        }
        .hero-overlay {
            background: linear-gradient(180deg, rgba(18, 16, 31, 0.55) 0%, rgba(18, 16, 31, 0.82) 45%, rgba(18, 16, 31, 0.96) 100%);
            position: absolute;
            inset: 0;
            z-index: 2;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            z-index: 1;
        }
        .search-box {
            position: relative;
            display: flex;
            align-items: center;
            max-width: 520px;
            width: 100%;
        }
        .search-box svg {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            width: 18px;
            height: 18px;
            color: var(--text-secondary);
            pointer-events: none;
        }
        .search-box input {
            padding-left: 44px;
            padding-right: 120px;
            border-radius: 999px;
            background-color: rgba(36, 32, 64, 0.8);
            border: 1px solid var(--border-purple);
            color: var(--text-primary);
            transition: border-color var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
        }
        .search-box input:focus {
            border-color: var(--brand-light);
            box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.22);
            background-color: var(--bg-card2);
        }
        .search-box button {
            position: absolute;
            right: 6px;
            top: 50%;
            transform: translateY(-50%);
            background-color: var(--brand);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 0.45rem 1.1rem;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            transition: background-color var(--transition-base), transform var(--transition-base);
        }
        .search-box button:hover {
            background-color: var(--brand-light);
        }
        footer a {
            color: var(--text-secondary);
            font-size: 0.88rem;
            transition: color var(--transition-base);
        }
        footer a:hover {
            color: var(--cyan-accent);
        }
        .mobile-menu {
            display: none;
        }
        .mobile-menu.open {
            display: block;
        }
        @media (max-width: 1024px) {
            .desktop-nav-links {
                display: none !important;
            }
            .mobile-toggle {
                display: flex !important;
            }
            .section-pad {
                padding-top: 3.5rem;
                padding-bottom: 3.5rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }
        @media (min-width: 1025px) {
            .mobile-toggle {
                display: none !important;
            }
        }
        @media (max-width: 640px) {
            .section-pad {
                padding-top: 2.8rem;
                padding-bottom: 2.8rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .hero-title {
                font-size: 2rem !important;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .search-box input {
                padding-right: 90px;
                font-size: 0.85rem;
            }
            .search-box button {
                padding: 0.4rem 0.75rem;
                font-size: 0.75rem;
            }
        }

/* roulang page: category1 */
:root {
            --brand: #7C5CFF;
            --brand-light: #A78BFF;
            --cyan-accent: #2DE1C2;
            --gold: #FFC857;
            --rose: #FF3D7F;
            --bg-deep: #12101F;
            --bg-card: #1B1830;
            --bg-card2: #242040;
            --border-purple: rgba(167, 139, 255, 0.38);
            --text-primary: #F5F3FF;
            --text-secondary: #A9A4C6;
            --radius-card: 18px;
            --radius-btn: 999px;
            --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.35);
            --transition-base: 200ms ease;
            --container-max: 1200px;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-primary);
            font-size: 16px;
            line-height: 1.85;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            background-image:
                radial-gradient(ellipse at 15% 10%, rgba(124, 92, 255, 0.08) 0%, transparent 48%),
                radial-gradient(ellipse at 85% 25%, rgba(45, 225, 194, 0.05) 0%, transparent 42%),
                radial-gradient(ellipse at 50% 75%, rgba(255, 61, 127, 0.04) 0%, transparent 45%);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }

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

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

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 16px;
            color: var(--text-primary);
            background-color: var(--bg-card2);
            border: 1px solid var(--border-purple);
            border-radius: 12px;
            padding: 12px 14px;
            width: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        input::placeholder,
        textarea::placeholder {
            color: var(--text-secondary);
            opacity: 0.7;
        }

        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--brand-light);
            box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.22);
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        .section-pad {
            padding-top: 4.5rem;
            padding-bottom: 4.5rem;
        }

        .card-base {
            background-color: var(--bg-card);
            border: 1px solid var(--border-purple);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .card-base:hover {
            transform: translateY(-4px);
            border-color: rgba(245, 243, 255, 0.7);
            box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.22), 0 22px 48px rgba(0, 0, 0, 0.42);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background-color: var(--brand);
            color: #ffffff;
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.75rem;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: background-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }

        .btn-primary:hover {
            background-color: var(--brand-light);
            transform: scale(1.02);
            box-shadow: 0 0 24px rgba(124, 92, 255, 0.45);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-purple);
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.75rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: border-color var(--transition-base), color var(--transition-base), transform var(--transition-base);
        }

        .btn-secondary:hover {
            border-color: var(--cyan-accent);
            color: var(--cyan-accent);
            transform: translateY(-2px);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 0.25rem 0.85rem;
            border-radius: 999px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .badge-purple {
            background: rgba(124, 92, 255, 0.18);
            color: var(--brand-light);
            border: 1px solid rgba(124, 92, 255, 0.35);
        }

        .badge-cyan {
            background: rgba(45, 225, 194, 0.14);
            color: var(--cyan-accent);
            border: 1px solid rgba(45, 225, 194, 0.3);
        }

        .badge-gold {
            background: rgba(255, 200, 87, 0.14);
            color: var(--gold);
            border: 1px solid rgba(255, 200, 87, 0.32);
        }

        .badge-rose {
            background: rgba(255, 61, 127, 0.14);
            color: var(--rose);
            border: 1px solid rgba(255, 61, 127, 0.32);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: 0.01em;
            margin-bottom: 0.75rem;
        }

        .section-sub {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 2.5rem;
            max-width: 720px;
        }

        .nav-link {
            position: relative;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 0.4rem 0.2rem;
            transition: color var(--transition-base);
        }

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

        .nav-link.active {
            color: var(--cyan-accent);
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -4px;
            height: 2px;
            background: var(--cyan-accent);
            border-radius: 999px;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--bg-card2);
            border: 1px solid var(--border-purple);
            border-radius: 999px;
            padding: 0.4rem 0.4rem 0.4rem 1rem;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .search-box:focus-within {
            border-color: var(--brand-light);
            box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.22);
        }

        .search-box svg {
            width: 1.1rem;
            height: 1.1rem;
            color: var(--text-secondary);
            flex-shrink: 0;
        }

        .search-box input {
            background: transparent;
            border: none;
            padding: 0.35rem 0;
            width: 100%;
            font-size: 0.9rem;
            color: var(--text-primary);
        }

        .search-box input:focus {
            border: none;
            box-shadow: none;
            outline: none;
        }

        .search-box button {
            background: var(--brand);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 0.45rem 1.1rem;
            font-size: 0.82rem;
            font-weight: 600;
            cursor: pointer;
            transition: background-color var(--transition-base);
            flex-shrink: 0;
        }

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

        .mobile-menu {
            transition: all var(--transition-base);
        }

        .chip-filter {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.4rem 1.1rem;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid var(--border-purple);
            color: var(--text-secondary);
            background: transparent;
            cursor: pointer;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .chip-filter:hover,
        .chip-filter.active {
            border-color: var(--cyan-accent);
            color: var(--cyan-accent);
            background: rgba(45, 225, 194, 0.08);
        }

        .ability-attr-bar {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.78rem;
            color: var(--text-secondary);
        }

        .ability-attr-bar .bar-track {
            flex: 1;
            height: 6px;
            border-radius: 999px;
            background: rgba(167, 139, 255, 0.18);
            overflow: hidden;
        }

        .ability-attr-bar .bar-fill {
            height: 100%;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--brand), var(--cyan-accent));
            transition: width 400ms ease;
        }

        .glass-glow {
            position: relative;
            overflow: hidden;
        }

        .glass-glow::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 20% 20%, rgba(124, 92, 255, 0.18) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 40%, rgba(45, 225, 194, 0.10) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

        .glass-glow>* {
            position: relative;
            z-index: 1;
        }

        .hero-mask {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(18, 16, 31, 0.72) 0%, rgba(18, 16, 31, 0.85) 55%, rgba(18, 16, 31, 0.96) 100%);
            z-index: 1;
        }

        footer a {
            color: var(--text-secondary);
            transition: color var(--transition-base);
        }

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

        .cta-glow {
            background: linear-gradient(135deg, rgba(124, 92, 255, 0.22) 0%, rgba(45, 225, 194, 0.10) 50%, rgba(255, 200, 87, 0.08) 100%);
            border: 1px solid rgba(167, 139, 255, 0.45);
            border-radius: var(--radius-card);
            box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
        }

        @media (max-width: 640px) {
            .section-title {
                font-size: 1.5rem;
            }

            .section-sub {
                font-size: 0.95rem;
            }

            .section-pad {
                padding-top: 3rem;
                padding-bottom: 3rem;
            }

            .chip-filter {
                font-size: 0.75rem;
                padding: 0.3rem 0.8rem;
            }

            .btn-primary,
            .btn-secondary {
                padding: 0.6rem 1.2rem;
                font-size: 0.9rem;
            }
        }

        @media (min-width: 641px) and (max-width: 1024px) {
            .section-title {
                font-size: 1.75rem;
            }
        }

/* roulang page: category2 */
:root {
            --brand: #7C5CFF;
            --brand-light: #A78BFF;
            --cyan-accent: #2DE1C2;
            --gold: #FFC857;
            --rose: #FF3D7F;
            --bg-deep: #12101F;
            --bg-card: #1B1830;
            --bg-card2: #242040;
            --border-purple: rgba(167, 139, 255, 0.38);
            --text-primary: #F5F3FF;
            --text-secondary: #A9A4C6;
            --radius-card: 18px;
            --radius-btn: 999px;
            --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.35);
            --transition-base: 200ms ease;
            --container-max: 1200px;
        }
        html { scroll-behavior: smooth; }
        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-primary);
            font-size: 16px;
            line-height: 1.85;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a { color: inherit; text-decoration: none; transition: color var(--transition-base); }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--cyan-accent);
            outline-offset: 2px;
        }
        img { max-width: 100%; display: block; }
        input, select, textarea {
            font-family: inherit;
            font-size: 16px;
            color: var(--text-primary);
            background-color: var(--bg-card2);
            border: 1px solid var(--border-purple);
            border-radius: 12px;
            padding: 12px 14px;
            width: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        input::placeholder, textarea::placeholder { color: var(--text-secondary); opacity: 0.7; }
        input:focus, select:focus, textarea:focus {
            border-color: var(--brand-light);
            box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.22);
            outline: none;
        }
        .container {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        .section-pad { padding-top: 4.5rem; padding-bottom: 4.5rem; }
        .card-base {
            background-color: var(--bg-card);
            border: 1px solid var(--border-purple);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .card-base:hover {
            transform: translateY(-4px);
            border-color: rgba(245, 243, 255, 0.7);
            box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.22), 0 22px 48px rgba(0, 0, 0, 0.42);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background-color: var(--brand);
            color: #ffffff;
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.75rem;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: background-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }
        .btn-primary:hover {
            background-color: var(--brand-light);
            transform: scale(1.02);
            box-shadow: 0 0 24px rgba(124, 92, 255, 0.45);
        }
        .btn-primary:active { transform: scale(0.98); }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-purple);
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.75rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: border-color var(--transition-base), color var(--transition-base), transform var(--transition-base);
        }
        .btn-secondary:hover {
            border-color: var(--cyan-accent);
            color: var(--cyan-accent);
            transform: translateY(-2px);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 0.25rem 0.85rem;
            border-radius: 999px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .badge-purple { background: rgba(124, 92, 255, 0.18); color: var(--brand-light); border: 1px solid rgba(124, 92, 255, 0.35); }
        .badge-cyan { background: rgba(45, 225, 194, 0.14); color: var(--cyan-accent); border: 1px solid rgba(45, 225, 194, 0.3); }
        .badge-gold { background: rgba(255, 200, 87, 0.14); color: var(--gold); border: 1px solid rgba(255, 200, 87, 0.32); }
        .badge-rose { background: rgba(255, 61, 127, 0.14); color: var(--rose); border: 1px solid rgba(255, 61, 127, 0.32); }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: 0.01em;
            margin-bottom: 0.75rem;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 2.5rem;
            max-width: 720px;
        }
        .nav-link {
            position: relative;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 0.4rem 0.2rem;
            transition: color var(--transition-base);
        }
        .nav-link:hover { color: var(--text-primary); }
        .nav-link.active {
            color: var(--cyan-accent);
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            border-radius: 999px;
            background: var(--cyan-accent);
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--bg-card2);
            border: 1px solid var(--border-purple);
            border-radius: 999px;
            padding: 0.4rem 0.4rem 0.4rem 1rem;
            width: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .search-box:focus-within {
            border-color: var(--brand-light);
            box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.18);
        }
        .search-box svg {
            width: 20px;
            height: 20px;
            color: var(--text-secondary);
            flex-shrink: 0;
        }
        .search-box input {
            border: none;
            background: transparent;
            padding: 6px 0;
            flex: 1;
            min-width: 0;
            box-shadow: none;
            border-radius: 0;
            font-size: 0.92rem;
        }
        .search-box input:focus {
            box-shadow: none;
            outline: none;
            border: none;
        }
        .search-box button {
            background: var(--brand);
            color: #ffffff;
            border: none;
            border-radius: 999px;
            padding: 0.4rem 1.1rem;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            flex-shrink: 0;
            transition: background-color var(--transition-base), transform var(--transition-base);
        }
        .search-box button:hover { background: var(--brand-light); transform: scale(1.03); }
        .mobile-menu { display: none; }
        .mobile-menu.open { display: block; }
        .desktop-nav-links { display: flex; }
        .mobile-toggle { display: none; }
        @media (max-width: 1023px) {
            .desktop-nav-links { display: none; }
            .mobile-toggle { display: flex; }
        }
        @media (min-width: 1024px) {
            .mobile-menu { display: none !important; }
        }

        /* 分类页2特有样式 */
        .matrix-hero {
            background-image: linear-gradient(to bottom, rgba(18, 16, 31, 0.82), rgba(18, 16, 31, 0.96)), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }
        .matrix-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 65% 40%, rgba(124, 92, 255, 0.22), transparent 55%);
            pointer-events: none;
        }
        .matrix-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background:
                linear-gradient(90deg, rgba(167,139,255,0.05) 1px, transparent 1px),
                linear-gradient(0deg, rgba(167,139,255,0.05) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            opacity: 0.5;
        }
        .glow-ring {
            position: relative;
        }
        .glow-ring::before {
            content: "";
            position: absolute;
            inset: -12px;
            border-radius: 28px;
            background: radial-gradient(ellipse at center, rgba(124, 92, 255, 0.28), transparent 70%);
            pointer-events: none;
            z-index: 0;
        }
        .glow-ring > * { position: relative; z-index: 1; }
        .metric-bar {
            height: 10px;
            border-radius: 999px;
            background: var(--bg-card2);
            overflow: hidden;
            border: 1px solid var(--border-purple);
        }
        .metric-bar-fill {
            height: 100%;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--brand), var(--cyan-accent));
            transition: width 1s ease;
            position: relative;
        }
        .metric-bar-fill.gold-fill {
            background: linear-gradient(90deg, var(--brand), var(--gold));
        }
        .metric-bar-fill.rose-fill {
            background: linear-gradient(90deg, var(--brand), var(--rose));
        }
        .panel-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1rem 1.25rem;
            border-bottom: 1px solid rgba(167, 139, 255, 0.16);
            transition: background-color var(--transition-base);
        }
        .panel-item:last-child { border-bottom: none; }
        .panel-item:hover { background: rgba(124, 92, 255, 0.07); }
        .panel-label {
            flex-shrink: 0;
            width: 110px;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-primary);
        }
        .panel-value {
            flex-shrink: 0;
            font-weight: 800;
            font-size: 1.15rem;
            color: var(--cyan-accent);
            min-width: 52px;
            text-align: right;
        }
        .panel-value.gold-value { color: var(--gold); }
        .panel-value.rose-value { color: var(--rose); }
        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-purple);
            border-radius: var(--radius-card);
            padding: 1.5rem;
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 1rem;
            height: 100%;
        }
        .service-card:hover {
            transform: translateY(-4px);
            border-color: var(--cyan-accent);
            box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.14), 0 22px 48px rgba(0, 0, 0, 0.42);
        }
        .service-card .card-index {
            font-family: "Roboto Mono", "DIN Alternate", monospace;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--gold);
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }
        .service-card h3 {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0.25rem 0 0.5rem;
        }
        .service-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.8;
            flex: 1;
        }
        .service-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding-top: 1rem;
            border-top: 1px solid rgba(167, 139, 255, 0.16);
        }
        .service-card .card-link {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--cyan-accent);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            transition: color var(--transition-base);
        }
        .service-card .card-link:hover { color: var(--gold); }
        .attribute-row {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 0.85rem;
        }
        .attribute-row .attr-label {
            flex-shrink: 0;
            width: 130px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
        }
        .attribute-row .attr-track {
            flex: 1;
            height: 8px;
            border-radius: 999px;
            background: var(--bg-card2);
            border: 1px solid rgba(167, 139, 255, 0.2);
            overflow: hidden;
        }
        .attribute-row .attr-fill {
            height: 100%;
            border-radius: 999px;
            background: var(--brand);
            transition: width 1s ease;
        }
        .attribute-row .attr-score {
            flex-shrink: 0;
            font-weight: 800;
            font-size: 0.95rem;
            color: var(--text-primary);
            min-width: 42px;
            text-align: right;
        }
        .divider-glow {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-purple), transparent);
            margin: 2.5rem 0;
        }
        .info-block {
            background: var(--bg-card);
            border: 1px solid var(--border-purple);
            border-radius: var(--radius-card);
            padding: 2rem;
            position: relative;
            overflow: hidden;
        }
        .info-block::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--brand), var(--cyan-accent), transparent);
        }
        .info-block h4 {
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }
        .info-block p {
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 1rem;
        }
        .info-block p:last-child { margin-bottom: 0; }
        .linked-service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.5rem;
        }
        @media (max-width: 767px) {
            .section-title { font-size: 1.6rem; }
            .section-pad { padding-top: 3rem; padding-bottom: 3rem; }
            .matrix-hero { min-height: 420px; }
            .panel-label { width: 85px; font-size: 0.8rem; }
            .panel-value { font-size: 1rem; min-width: 42px; }
            .attribute-row { flex-wrap: wrap; }
            .attribute-row .attr-label { width: 100%; }
            .attribute-row .attr-score { min-width: auto; }
            .info-block { padding: 1.5rem; }
            .linked-service-grid { grid-template-columns: 1fr; }
        }
        @media (min-width: 768px) and (max-width: 1023px) {
            .linked-service-grid { grid-template-columns: repeat(2, 1fr); }
        }
        .breadcrumb {
            font-size: 0.85rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }
        .breadcrumb a:hover { color: var(--cyan-accent); }
        .breadcrumb .sep { color: rgba(167, 139, 255, 0.5); }

/* roulang page: category3 */
:root {
            --brand: #7C5CFF;
            --brand-light: #A78BFF;
            --cyan-accent: #2DE1C2;
            --gold: #FFC857;
            --rose: #FF3D7F;
            --bg-deep: #12101F;
            --bg-card: #1B1830;
            --bg-card2: #242040;
            --border-purple: rgba(167, 139, 255, 0.38);
            --text-primary: #F5F3FF;
            --text-secondary: #A9A4C6;
            --radius-card: 18px;
            --radius-btn: 999px;
            --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.35);
            --transition-base: 200ms ease;
            --container-max: 1200px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-primary);
            font-size: 16px;
            line-height: 1.85;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--cyan-accent);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            display: block;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 16px;
            color: var(--text-primary);
            background-color: var(--bg-card2);
            border: 1px solid var(--border-purple);
            border-radius: 12px;
            padding: 12px 14px;
            width: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        input::placeholder,
        textarea::placeholder {
            color: var(--text-secondary);
            opacity: 0.7;
        }
        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--brand-light);
            box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.22);
            outline: none;
        }
        .container {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        .section-pad {
            padding-top: 4.5rem;
            padding-bottom: 4.5rem;
        }
        .card-base {
            background-color: var(--bg-card);
            border: 1px solid var(--border-purple);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .card-base:hover {
            transform: translateY(-4px);
            border-color: rgba(245, 243, 255, 0.7);
            box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.22), 0 22px 48px rgba(0, 0, 0, 0.42);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background-color: var(--brand);
            color: #ffffff;
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.75rem;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: background-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }
        .btn-primary:hover {
            background-color: var(--brand-light);
            transform: scale(1.02);
            box-shadow: 0 0 24px rgba(124, 92, 255, 0.45);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-purple);
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.75rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: border-color var(--transition-base), color var(--transition-base), transform var(--transition-base);
        }
        .btn-secondary:hover {
            border-color: var(--cyan-accent);
            color: var(--cyan-accent);
            transform: translateY(-2px);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 0.25rem 0.85rem;
            border-radius: 999px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .badge-purple {
            background: rgba(124, 92, 255, 0.18);
            color: var(--brand-light);
            border: 1px solid rgba(124, 92, 255, 0.35);
        }
        .badge-cyan {
            background: rgba(45, 225, 194, 0.14);
            color: var(--cyan-accent);
            border: 1px solid rgba(45, 225, 194, 0.3);
        }
        .badge-gold {
            background: rgba(255, 200, 87, 0.14);
            color: var(--gold);
            border: 1px solid rgba(255, 200, 87, 0.32);
        }
        .badge-rose {
            background: rgba(255, 61, 127, 0.14);
            color: var(--rose);
            border: 1px solid rgba(255, 61, 127, 0.32);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: 0.01em;
            margin-bottom: 0.75rem;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 2.5rem;
            max-width: 720px;
        }
        .faq-answer {
            line-height: 1.9;
            color: var(--text-secondary);
        }
        .nav-link {
            position: relative;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 0.4rem 0.2rem;
            transition: color var(--transition-base);
        }
        .nav-link:hover {
            color: var(--text-primary);
        }
        .nav-link.active {
            color: var(--cyan-accent);
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: -4px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--cyan-accent);
            border-radius: 2px;
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            background: var(--bg-card2);
            border: 1px solid var(--border-purple);
            border-radius: 999px;
            padding: 0.45rem 0.6rem 0.45rem 1rem;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
            width: 100%;
            max-width: 520px;
        }
        .search-box:focus-within {
            border-color: var(--brand-light);
            box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.18);
        }
        .search-box svg {
            width: 20px;
            height: 20px;
            color: var(--text-secondary);
            flex-shrink: 0;
        }
        .search-box input {
            border: none;
            background: transparent;
            padding: 0;
            font-size: 0.92rem;
            flex: 1;
            min-width: 0;
            box-shadow: none;
        }
        .search-box input:focus {
            box-shadow: none;
            border: none;
        }
        .search-box button {
            background: var(--brand);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 0.45rem 1.2rem;
            font-size: 0.88rem;
            font-weight: 600;
            cursor: pointer;
            transition: background-color var(--transition-base), transform var(--transition-base);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .search-box button:hover {
            background: var(--brand-light);
            transform: scale(1.03);
        }
        .mobile-menu {
            animation: fadeDown 0.25s ease;
        }
        @keyframes fadeDown {
            from { opacity: 0; transform: translateY(-8px); }
            to { opacity: 1; transform: translateY(0); }
        }
        footer a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: color var(--transition-base);
        }
        footer a:hover {
            color: var(--cyan-accent);
        }
        /* 分类页3特有样式 */
        .compare-tab {
            padding: 0.65rem 1.4rem;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            background: transparent;
            border: 1px solid var(--border-purple);
            cursor: pointer;
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .compare-tab:hover {
            color: var(--text-primary);
            border-color: var(--brand-light);
        }
        .compare-tab.active {
            background: var(--brand);
            color: #fff;
            border-color: var(--brand);
            box-shadow: 0 0 20px rgba(124, 92, 255, 0.4);
        }
        .score-bar {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            margin-bottom: 0.9rem;
        }
        .score-bar .score-label {
            width: 76px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-secondary);
            flex-shrink: 0;
            text-align: right;
        }
        .score-bar .score-track {
            flex: 1;
            height: 8px;
            background: rgba(167, 139, 255, 0.18);
            border-radius: 999px;
            overflow: hidden;
        }
        .score-bar .score-fill {
            height: 100%;
            border-radius: 999px;
            transition: width 800ms ease;
        }
        .score-bar .score-value {
            width: 48px;
            font-size: 0.9rem;
            font-weight: 700;
            font-family: "DIN Alternate", "Roboto Mono", monospace;
            flex-shrink: 0;
        }
        .diff-item {
            padding: 0.9rem 1.2rem;
            border-radius: 12px;
            font-size: 0.95rem;
            line-height: 1.7;
            display: flex;
            align-items: flex-start;
            gap: 0.6rem;
        }
        .diff-item .diff-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: 800;
            margin-top: 2px;
        }
        .diff-up {
            background: rgba(45, 225, 194, 0.1);
            border: 1px solid rgba(45, 225, 194, 0.3);
            color: var(--cyan-accent);
        }
        .diff-up .diff-icon {
            background: rgba(45, 225, 194, 0.2);
            color: var(--cyan-accent);
        }
        .diff-down {
            background: rgba(255, 61, 127, 0.1);
            border: 1px solid rgba(255, 61, 127, 0.3);
            color: var(--rose);
        }
        .diff-down .diff-icon {
            background: rgba(255, 61, 127, 0.2);
            color: var(--rose);
        }
        .diff-gold {
            background: rgba(255, 200, 87, 0.1);
            border: 1px solid rgba(255, 200, 87, 0.32);
            color: var(--gold);
        }
        .diff-gold .diff-icon {
            background: rgba(255, 200, 87, 0.2);
            color: var(--gold);
        }
        .hero-bg {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .hero-bg::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(18, 16, 31, 0.92) 0%, rgba(18, 16, 31, 0.75) 45%, rgba(18, 16, 31, 0.88) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .plan-card {
            transition: all var(--transition-base);
            position: relative;
        }
        .plan-card.highlight {
            border-color: var(--gold);
            box-shadow: 0 0 0 3px rgba(255, 200, 87, 0.2), 0 24px 56px rgba(0, 0, 0, 0.45);
        }
        .plan-card.highlight::after {
            content: "推荐";
            position: absolute;
            top: -12px;
            right: 24px;
            background: var(--gold);
            color: var(--bg-deep);
            font-size: 0.78rem;
            font-weight: 800;
            padding: 0.2rem 1rem;
            border-radius: 999px;
            letter-spacing: 0.02em;
        }
        @media (max-width: 640px) {
            .section-title {
                font-size: 1.6rem;
            }
            .section-pad {
                padding-top: 3rem;
                padding-bottom: 3rem;
            }
            .score-bar .score-label {
                width: 60px;
                font-size: 0.78rem;
            }
            .score-bar .score-value {
                width: 38px;
                font-size: 0.82rem;
            }
            .compare-tab {
                font-size: 0.8rem;
                padding: 0.5rem 1rem;
            }
        }
        @media (min-width: 641px) and (max-width: 1024px) {
            .section-title {
                font-size: 1.8rem;
            }
        }

/* roulang page: category4 */
:root {
            --brand: #7C5CFF;
            --brand-light: #A78BFF;
            --cyan-accent: #2DE1C2;
            --gold: #FFC857;
            --rose: #FF3D7F;
            --bg-deep: #12101F;
            --bg-card: #1B1830;
            --bg-card2: #242040;
            --border-purple: rgba(167, 139, 255, 0.38);
            --text-primary: #F5F3FF;
            --text-secondary: #A9A4C6;
            --radius-card: 18px;
            --radius-btn: 999px;
            --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.35);
            --transition-base: 200ms ease;
            --container-max: 1200px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-primary);
            font-size: 16px;
            line-height: 1.85;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--cyan-accent);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            display: block;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 16px;
            color: var(--text-primary);
            background-color: var(--bg-card2);
            border: 1px solid var(--border-purple);
            border-radius: 12px;
            padding: 12px 14px;
            width: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        input::placeholder,
        textarea::placeholder {
            color: var(--text-secondary);
            opacity: 0.7;
        }
        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--brand-light);
            box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.22);
            outline: none;
        }
        .container {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        .section-pad {
            padding-top: 4.5rem;
            padding-bottom: 4.5rem;
        }
        .card-base {
            background-color: var(--bg-card);
            border: 1px solid var(--border-purple);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .card-base:hover {
            transform: translateY(-4px);
            border-color: rgba(245, 243, 255, 0.7);
            box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.22), 0 22px 48px rgba(0, 0, 0, 0.42);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background-color: var(--brand);
            color: #ffffff;
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.75rem;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: background-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }
        .btn-primary:hover {
            background-color: var(--brand-light);
            transform: scale(1.02);
            box-shadow: 0 0 24px rgba(124, 92, 255, 0.45);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-purple);
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.75rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: border-color var(--transition-base), color var(--transition-base), transform var(--transition-base);
        }
        .btn-secondary:hover {
            border-color: var(--cyan-accent);
            color: var(--cyan-accent);
            transform: translateY(-2px);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 0.25rem 0.85rem;
            border-radius: 999px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .badge-purple {
            background: rgba(124, 92, 255, 0.18);
            color: var(--brand-light);
            border: 1px solid rgba(124, 92, 255, 0.35);
        }
        .badge-cyan {
            background: rgba(45, 225, 194, 0.14);
            color: var(--cyan-accent);
            border: 1px solid rgba(45, 225, 194, 0.3);
        }
        .badge-gold {
            background: rgba(255, 200, 87, 0.14);
            color: var(--gold);
            border: 1px solid rgba(255, 200, 87, 0.32);
        }
        .badge-rose {
            background: rgba(255, 61, 127, 0.14);
            color: var(--rose);
            border: 1px solid rgba(255, 61, 127, 0.32);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: 0.01em;
            margin-bottom: 0.75rem;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 2.5rem;
            max-width: 720px;
        }
        .faq-answer {
            line-height: 1.9;
            color: var(--text-secondary);
        }
        .nav-link {
            position: relative;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 0.4rem 0.2rem;
            transition: color var(--transition-base);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--cyan-accent);
        }
        .nav-link.active {
            color: var(--cyan-accent);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: var(--cyan-accent);
            border-radius: 2px;
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            background-color: var(--bg-card2);
            border: 1px solid var(--border-purple);
            border-radius: 999px;
            padding: 0.35rem 0.35rem 0.35rem 1rem;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
            width: 100%;
        }
        .search-box:focus-within {
            border-color: var(--brand-light);
            box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.22);
        }
        .search-box svg {
            width: 1.15rem;
            height: 1.15rem;
            color: var(--text-secondary);
            flex-shrink: 0;
        }
        .search-box input {
            background: transparent;
            border: none;
            padding: 0.5rem 0;
            flex: 1;
            min-width: 0;
            color: var(--text-primary);
            font-size: 0.92rem;
        }
        .search-box input:focus {
            box-shadow: none;
            border: none;
        }
        .search-box button {
            background-color: var(--brand);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 0.45rem 1.25rem;
            font-weight: 600;
            font-size: 0.85rem;
            cursor: pointer;
            transition: background-color var(--transition-base);
            flex-shrink: 0;
        }
        .search-box button:hover {
            background-color: var(--brand-light);
        }
        .faq-item {
            border: 1px solid var(--border-purple);
            border-radius: 16px;
            background: var(--bg-card);
            overflow: hidden;
            transition: border-color var(--transition-base), background-color var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(124, 92, 255, 0.6);
            background: var(--bg-card2);
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            width: 100%;
            padding: 1.1rem 1.25rem;
            text-align: left;
            cursor: pointer;
            background: transparent;
            border: none;
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.6;
            transition: color var(--transition-base);
        }
        .faq-question:hover {
            color: var(--cyan-accent);
        }
        .faq-question .faq-num {
            font-family: 'DIN Alternate', 'Roboto Mono', monospace;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--gold);
            background: rgba(255, 200, 87, 0.12);
            border: 1px solid rgba(255, 200, 87, 0.25);
            border-radius: 6px;
            padding: 0.15rem 0.5rem;
            flex-shrink: 0;
        }
        .faq-question .faq-icon {
            margin-left: auto;
            flex-shrink: 0;
            color: var(--text-secondary);
            font-size: 1.5rem;
            line-height: 1;
            font-weight: 300;
            transition: transform var(--transition-base), color var(--transition-base);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--cyan-accent);
        }
        .faq-answer-wrap {
            max-height: 0;
            overflow: hidden;
            transition: max-height 350ms ease;
        }
        .faq-answer-inner {
            padding: 0 1.25rem 1.25rem 3rem;
            font-size: 0.95rem;
            line-height: 1.9;
            color: var(--text-secondary);
            border-top: 1px dashed rgba(167, 139, 255, 0.2);
            padding-top: 1rem;
        }
        .category-dir-item {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.7rem 1rem;
            border-radius: 12px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
            border: 1px solid transparent;
            cursor: pointer;
        }
        .category-dir-item:hover {
            background: rgba(124, 92, 255, 0.12);
            color: var(--text-primary);
            border-color: rgba(124, 92, 255, 0.3);
        }
        .category-dir-item.active {
            background: rgba(45, 225, 194, 0.1);
            color: var(--cyan-accent);
            border-color: rgba(45, 225, 194, 0.3);
        }
        .category-dir-item .dir-num {
            font-family: 'DIN Alternate', 'Roboto Mono', monospace;
            font-size: 0.75rem;
            color: var(--brand-light);
            background: rgba(124, 92, 255, 0.15);
            border-radius: 5px;
            padding: 0.12rem 0.45rem;
            flex-shrink: 0;
        }
        .empty-state {
            display: none;
            text-align: center;
            padding: 2.5rem 1.5rem;
            border: 1px dashed var(--border-purple);
            border-radius: 16px;
            background: var(--bg-card);
        }
        .empty-state.visible {
            display: block;
        }
        .empty-state p {
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        .result-count {
            font-size: 0.85rem;
            color: var(--text-secondary);
            font-weight: 500;
            white-space: nowrap;
        }
        .hero-bg {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            border-radius: 0 0 28px 28px;
            overflow: hidden;
        }
        .hero-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(18,16,31,0.82) 0%, rgba(18,16,31,0.7) 55%, rgba(18,16,31,0.95) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding: 4rem 1.25rem 3.5rem;
        }
        .mobile-menu {
            transition: all 250ms ease;
        }
        .mobile-menu.hidden {
            display: none;
        }
        .desktop-nav-links {
            display: none;
        }
        .mobile-toggle {
            display: flex;
        }
        @media (min-width: 768px) {
            .desktop-nav-links {
                display: flex;
            }
            .mobile-toggle {
                display: none;
            }
            .section-title {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 767px) {
            .section-pad {
                padding-top: 3rem;
                padding-bottom: 3rem;
            }
            .hero-content {
                padding: 2.5rem 1.25rem 2.5rem;
            }
            .faq-answer-inner {
                padding-left: 1.25rem;
            }
            .faq-question {
                font-size: 0.92rem;
                padding: 1rem 1rem;
            }
        }
        @media (max-width: 520px) {
            body {
                font-size: 15px;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category5 */
:root {
            --brand: #7C5CFF;
            --brand-light: #A78BFF;
            --cyan-accent: #2DE1C2;
            --gold: #FFC857;
            --rose: #FF3D7F;
            --bg-deep: #12101F;
            --bg-card: #1B1830;
            --bg-card2: #242040;
            --border-purple: rgba(167, 139, 255, 0.38);
            --text-primary: #F5F3FF;
            --text-secondary: #A9A4C6;
            --radius-card: 18px;
            --radius-btn: 999px;
            --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.35);
            --transition-base: 200ms ease;
            --container-max: 1200px;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-primary);
            font-size: 16px;
            line-height: 1.85;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }

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

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

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 16px;
            color: var(--text-primary);
            background-color: var(--bg-card2);
            border: 1px solid var(--border-purple);
            border-radius: 12px;
            padding: 12px 14px;
            width: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        input::placeholder,
        textarea::placeholder {
            color: var(--text-secondary);
            opacity: 0.7;
        }

        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--brand-light);
            box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.22);
            outline: none;
        }

        select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23A9A4C6' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            background-size: 18px;
            padding-right: 40px;
        }

        .container {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        .section-pad {
            padding-top: 4.5rem;
            padding-bottom: 4.5rem;
        }

        .card-base {
            background-color: var(--bg-card);
            border: 1px solid var(--border-purple);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .card-base:hover {
            transform: translateY(-4px);
            border-color: rgba(245, 243, 255, 0.7);
            box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.22), 0 22px 48px rgba(0, 0, 0, 0.42);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background-color: var(--brand);
            color: #ffffff;
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.75rem;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: background-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }

        .btn-primary:hover {
            background-color: var(--brand-light);
            transform: scale(1.02);
            box-shadow: 0 0 24px rgba(124, 92, 255, 0.45);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-purple);
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.75rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: border-color var(--transition-base), color var(--transition-base), transform var(--transition-base);
        }

        .btn-secondary:hover {
            border-color: var(--cyan-accent);
            color: var(--cyan-accent);
            transform: translateY(-2px);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 0.25rem 0.85rem;
            border-radius: 999px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .badge-purple {
            background: rgba(124, 92, 255, 0.18);
            color: var(--brand-light);
            border: 1px solid rgba(124, 92, 255, 0.35);
        }

        .badge-cyan {
            background: rgba(45, 225, 194, 0.14);
            color: var(--cyan-accent);
            border: 1px solid rgba(45, 225, 194, 0.3);
        }

        .badge-gold {
            background: rgba(255, 200, 87, 0.14);
            color: var(--gold);
            border: 1px solid rgba(255, 200, 87, 0.32);
        }

        .badge-rose {
            background: rgba(255, 61, 127, 0.14);
            color: var(--rose);
            border: 1px solid rgba(255, 61, 127, 0.32);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: 0.01em;
            margin-bottom: 0.75rem;
        }

        .section-sub {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 2.5rem;
            max-width: 720px;
        }

        .nav-link {
            position: relative;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 0.4rem 0.2rem;
            transition: color var(--transition-base);
            white-space: nowrap;
        }

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

        .nav-link.active {
            color: var(--cyan-accent);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--cyan-accent);
            border-radius: 2px;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--bg-card);
            border: 1px solid var(--border-purple);
            border-radius: 999px;
            padding: 0.35rem 0.35rem 0.35rem 1rem;
            width: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .search-box:focus-within {
            border-color: var(--brand-light);
            box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.18);
        }

        .search-box svg {
            width: 20px;
            height: 20px;
            color: var(--text-secondary);
            flex-shrink: 0;
        }

        .search-box input {
            flex: 1;
            background: transparent;
            border: none;
            padding: 0.3rem 0;
            font-size: 0.9rem;
            color: var(--text-primary);
            min-width: 0;
            outline: none;
            box-shadow: none;
        }

        .search-box input:focus {
            border: none;
            box-shadow: none;
            outline: none;
        }

        .search-box input::placeholder {
            color: var(--text-secondary);
            opacity: 0.7;
        }

        .search-box button {
            background: var(--brand);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 0.45rem 1.25rem;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            transition: background-color var(--transition-base), transform var(--transition-base);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .search-box button:hover {
            background: var(--brand-light);
            transform: scale(1.03);
        }

        .mobile-menu {
            transition: all var(--transition-base);
        }

        .mobile-menu a {
            display: block;
            padding: 0.6rem 0.5rem;
            border-radius: 8px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-secondary);
            transition: background-color var(--transition-base), color var(--transition-base);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: rgba(124, 92, 255, 0.18);
            color: var(--cyan-accent);
        }

        .step-line {
            position: relative;
            padding-left: 2.5rem;
            padding-bottom: 2rem;
        }

        .step-line::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 36px;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, rgba(124, 92, 255, 0.6), rgba(45, 225, 194, 0.2));
            border-radius: 2px;
        }

        .step-line:last-child {
            padding-bottom: 0;
        }

        .step-line:last-child::before {
            display: none;
        }

        .step-dot {
            position: absolute;
            left: 0;
            top: 4px;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--bg-card2);
            border: 2px solid var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            font-weight: 800;
            color: var(--brand-light);
            z-index: 1;
        }

        .trust-badge-item {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
            padding: 0.85rem 1rem;
            background: var(--bg-card2);
            border: 1px solid var(--border-purple);
            border-radius: 12px;
            transition: border-color var(--transition-base), transform var(--transition-base);
        }

        .trust-badge-item:hover {
            border-color: var(--cyan-accent);
            transform: translateX(4px);
        }

        .trust-badge-item svg {
            width: 20px;
            height: 20px;
            color: var(--cyan-accent);
            flex-shrink: 0;
            margin-top: 2px;
        }

        .gallery-card {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-purple);
            background: var(--bg-card);
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .gallery-card:hover {
            transform: translateY(-4px);
            border-color: rgba(245, 243, 255, 0.7);
            box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.22), 0 22px 48px rgba(0, 0, 0, 0.42);
        }

        .gallery-card img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            background: var(--bg-card2);
        }

        .gallery-card .gallery-info {
            padding: 1.25rem 1.5rem 1.5rem;
        }

        .footer-link {
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: color var(--transition-base);
        }

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

        .hero-overlay {
            background: linear-gradient(180deg, rgba(18, 16, 31, 0.82) 0%, rgba(18, 16, 31, 0.55) 45%, rgba(18, 16, 31, 0.92) 100%);
        }

        .bg-grid-pattern {
            background-image:
                radial-gradient(circle at 20% 40%, rgba(124, 92, 255, 0.12) 0%, transparent 45%),
                radial-gradient(circle at 80% 25%, rgba(45, 225, 194, 0.07) 0%, transparent 40%),
                radial-gradient(circle at 60% 80%, rgba(255, 200, 87, 0.05) 0%, transparent 45%);
            position: absolute;
            inset: 0;
            pointer-events: none;
        }

        @media (max-width: 640px) {
            .section-pad {
                padding-top: 2.75rem;
                padding-bottom: 2.75rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .btn-primary,
            .btn-secondary {
                font-size: 0.9rem;
                padding: 0.65rem 1.25rem;
                width: 100%;
                justify-content: center;
            }
            .search-box button {
                padding: 0.4rem 0.85rem;
                font-size: 0.8rem;
            }
            .search-box input {
                font-size: 0.82rem;
            }
        }

        @media (min-width: 641px) and (max-width: 1024px) {
            .section-pad {
                padding-top: 3.5rem;
                padding-bottom: 3.5rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }