/* roulang page: index */
:root {
        --page-bg: #05070D;
        --panel-bg: #0B0F1A;
        --primary: #2D6BFF;
        --primary-hover: #4F86FF;
        --primary-active: #1D55E0;
        --accent: #20C8FF;
        --gold: #F6B612;
        --gold-hover: #FFC83D;
        --body-text: #F2F6FF;
        --muted-text: #AAB8D0;
        --faint-text: #6C7A97;
        --divider: rgba(255, 255, 255, 0.08);
        --glass-border: rgba(255, 255, 255, 0.12);
        --card-shadow: 0 10px 40px rgba(0, 0, 0, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.06);
        --btn-shadow: 0 8px 28px rgba(45, 107, 255, 0.30);
        --radius-card: 16px;
        --radius-hero: 20px;
    }
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        background-color: var(--page-bg);
        color: var(--body-text);
        line-height: 1.75;
        font-size: 16px;
        letter-spacing: 0.02em;
        -webkit-font-smoothing: antialiased;
        overflow-x: hidden;
        background-image:
            radial-gradient(ellipse at 12% 8%, rgba(45, 107, 255, 0.12), transparent 60%),
            radial-gradient(ellipse at 85% 90%, rgba(246, 182, 18, 0.06), transparent 55%),
            linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
            linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
        background-size: 100% 100%, 100% 100%, 40px 40px, 40px 40px;
        background-attachment: fixed;
    }
    a {
        color: inherit;
        text-decoration: none;
        transition: color .25s ease;
    }
    img {
        max-width: 100%;
        display: block;
    }
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
    @media (min-width: 768px) {
        .container {
            padding-left: 2rem;
            padding-right: 2rem;
        }
    }
    .glass-line {
        position: absolute;
        top: 0;
        left: 0;
        width: 80px;
        height: 2px;
        background: linear-gradient(90deg, var(--gold), transparent);
        opacity: .5;
        pointer-events: none;
    }
    .section-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        letter-spacing: 0.12em;
        color: var(--gold);
        font-weight: 500;
        background: rgba(246, 182, 18, 0.08);
        padding: 4px 14px;
        border-radius: 999px;
        border: 1px solid rgba(246, 182, 18, 0.2);
    }
    .section-title {
        font-size: clamp(1.5rem, 4vw, 2.4rem);
        font-weight: 700;
        line-height: 1.25;
        color: var(--body-text);
        margin-top: 14px;
    }
    .section-title-left {
        position: relative;
        padding-left: 18px;
    }
    .section-title-left::before {
        content: "";
        position: absolute;
        left: 0;
        top: 6px;
        width: 4px;
        height: 64%;
        background: var(--gold);
        border-radius: 4px;
    }
    .section-header-wrap {
        display: flex;
        align-items: flex-end;
        justify-content: space-between;
        margin-bottom: 36px;
        flex-wrap: wrap;
        gap: 16px;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 15px;
        font-weight: 500;
        padding: 12px 28px;
        border-radius: 12px;
        transition: all .3s ease;
        cursor: pointer;
        border: none;
        outline: none;
        letter-spacing: 0.03em;
    }
    .btn-primary {
        background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
        color: #fff;
        box-shadow: var(--btn-shadow);
    }
    .btn-primary:hover {
        background: linear-gradient(135deg, var(--primary-hover) 0%, #35d3ff 100%);
        transform: translateY(-2px);
        box-shadow: 0 12px 36px rgba(45, 107, 255, 0.4);
    }
    .btn-primary:active {
        background: linear-gradient(135deg, var(--primary-active) 0%, #0ea5e0 100%);
        transform: translateY(0);
    }
    .btn-secondary {
        background: transparent;
        color: var(--body-text);
        border: 1px solid var(--glass-border);
        backdrop-filter: blur(8px);
    }
    .btn-secondary:hover {
        border-color: var(--primary);
        color: var(--primary-hover);
        transform: translateY(-2px);
    }
    .btn-gold {
        background: transparent;
        color: var(--gold);
        border: 1px solid rgba(246, 182, 18, 0.4);
        box-shadow: 0 0 20px rgba(246, 182, 18, 0.1);
    }
    .btn-gold:hover {
        border-color: var(--gold);
        box-shadow: 0 0 30px rgba(246, 182, 18, 0.2);
        transform: translateY(-2px);
    }
    .btn-ghost {
        background: transparent;
        color: var(--muted-text);
        border: 1px solid transparent;
    }
    .btn-ghost:hover {
        color: #fff;
        border-color: var(--glass-border);
        background: rgba(255, 255, 255, 0.04);
    }
    .glass-card {
        background: rgba(11, 15, 26, 0.7);
        border: 1px solid var(--glass-border);
        border-radius: var(--radius-card);
        box-shadow: var(--card-shadow);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        position: relative;
        overflow: hidden;
        transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease;
    }
    .glass-card::before {
        content: "";
        position: absolute;
        top: -2px;
        left: -20px;
        width: 70px;
        height: 2px;
        background: linear-gradient(45deg, rgba(255, 255, 255, 0.2), transparent);
        transform: rotate(45deg);
        z-index: 1;
        pointer-events: none;
    }
    .glass-card:hover {
        transform: translateY(-6px);
        border-color: rgba(45, 107, 255, 0.4);
        box-shadow: 0 16px 50px rgba(0, 0, 0, 0.35), 0 0 30px rgba(45, 107, 255, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.08);
    }
    .news-card {
        display: flex;
        flex-direction: column;
        height: 100%;
        background: rgba(11, 15, 26, 0.75);
        border: 1px solid var(--glass-border);
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--card-shadow);
        transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease;
        position: relative;
    }
    .news-card:hover {
        transform: translateY(-6px);
        border-color: rgba(45, 107, 255, 0.4);
        box-shadow: 0 16px 50px rgba(0, 0, 0, 0.35), 0 0 30px rgba(45, 107, 255, 0.08);
    }
    .news-cover {
        height: 190px;
        overflow: hidden;
        position: relative;
    }
    .news-cover img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .5s ease;
    }
    .news-card:hover .news-cover img {
        transform: scale(1.05);
    }
    .news-body {
        padding: 18px 18px 16px;
        display: flex;
        flex-direction: column;
        flex: 1;
    }
    .news-title {
        font-size: 16px;
        font-weight: 600;
        line-height: 1.5;
        color: var(--body-text);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        min-height: 48px;
    }
    .news-excerpt {
        font-size: 13px;
        color: var(--muted-text);
        line-height: 1.65;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-top: 8px;
        flex: 1;
    }
    .news-meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-top: 14px;
        padding-top: 12px;
        border-top: 1px solid var(--divider);
    }
    .news-badge {
        display: inline-flex;
        align-items: center;
        font-size: 12px;
        color: var(--gold);
        background: rgba(246, 182, 18, 0.1);
        border: 1px solid rgba(246, 182, 18, 0.2);
        padding: 3px 10px;
        border-radius: 999px;
        font-weight: 500;
    }
    .news-date {
        font-size: 13px;
        color: var(--faint-text);
    }
    .news-link {
        font-size: 13px;
        color: var(--primary-hover);
        font-weight: 500;
        transition: color .3s;
        display: inline-flex;
        align-items: center;
        gap: 4px;
    }
    .news-link:hover {
        color: var(--accent);
    }
    .empty-state {
        height: 200px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(11, 15, 26, 0.7);
        border: 1px solid var(--glass-border);
        border-radius: var(--radius-card);
        box-shadow: var(--card-shadow);
        color: var(--faint-text);
        font-size: 14px;
        grid-column: 1 / -1;
    }
    .featured-card {
        display: flex;
        flex-direction: column;
        background: rgba(11, 15, 26, 0.78);
        border: 1px solid var(--glass-border);
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--card-shadow);
        transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease;
        height: 100%;
        position: relative;
    }
    .featured-card:hover {
        transform: translateY(-6px);
        border-color: rgba(45, 107, 255, 0.4);
        box-shadow: 0 16px 50px rgba(0, 0, 0, 0.35), 0 0 30px rgba(45, 107, 255, 0.08);
    }
    .featured-cover {
        height: 220px;
        overflow: hidden;
        position: relative;
    }
    .featured-cover img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .5s ease;
    }
    .featured-card:hover .featured-cover img {
        transform: scale(1.05);
    }
    .featured-body {
        padding: 24px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .featured-num {
        font-size: 13px;
        color: var(--gold);
        font-weight: 700;
        letter-spacing: 0.1em;
        margin-bottom: 8px;
        font-variant-numeric: tabular-nums;
    }
    .featured-title {
        font-size: 20px;
        font-weight: 700;
        line-height: 1.4;
        color: var(--body-text);
        margin-bottom: 8px;
    }
    .featured-text {
        font-size: 14px;
        color: var(--muted-text);
        line-height: 1.7;
        flex: 1;
    }
    .trust-stat {
        text-align: center;
        padding: 16px 8px;
    }
    .trust-num {
        font-size: 36px;
        font-weight: 800;
        color: var(--gold);
        line-height: 1.2;
        font-variant-numeric: tabular-nums;
        letter-spacing: 0.04em;
    }
    .trust-label {
        font-size: 13px;
        color: var(--muted-text);
        margin-top: 6px;
    }
    .partner-tag {
        font-size: 14px;
        color: rgba(170, 184, 208, 0.5);
        padding: 8px 20px;
        border: 1px solid rgba(255, 255, 255, 0.06);
        border-radius: 999px;
        white-space: nowrap;
        transition: all .3s;
        letter-spacing: 0.05em;
    }
    .partner-tag:hover {
        color: rgba(170, 184, 208, 0.9);
        border-color: rgba(255, 255, 255, 0.14);
        background: rgba(255, 255, 255, 0.03);
    }
    .faq-item {
        border-bottom: 1px solid var(--divider);
    }
    .faq-item:last-child {
        border-bottom: none;
    }
    .faq-q {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 20px 8px;
        cursor: pointer;
        font-size: 16px;
        font-weight: 500;
        color: var(--body-text);
        transition: color .3s;
        user-select: none;
        gap: 16px;
    }
    .faq-q:hover {
        color: var(--primary-hover);
    }
    .faq-q svg {
        flex-shrink: 0;
        transition: transform .3s ease;
        color: var(--gold);
    }
    .faq-item.active .faq-q svg {
        transform: rotate(180deg);
    }
    .faq-a {
        max-height: 0;
        opacity: 0;
        overflow: hidden;
        transition: max-height .35s ease, opacity .35s ease;
        padding: 0 8px;
    }
    .faq-item.active .faq-a {
        max-height: 300px;
        opacity: 1;
        padding-bottom: 20px;
    }
    .faq-a p {
        font-size: 14px;
        color: var(--muted-text);
        line-height: 1.75;
    }
    .subscribe-box {
        background: linear-gradient(145deg, rgba(11, 15, 26, 0.85), rgba(11, 15, 26, 0.65));
        border: 1px solid var(--glass-border);
        border-radius: 24px;
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.06);
        position: relative;
        overflow: hidden;
    }
    .subscribe-box::before {
        content: "";
        position: absolute;
        top: -50%;
        right: -20%;
        width: 300px;
        height: 300px;
        background: radial-gradient(circle, rgba(45, 107, 255, 0.1), transparent 70%);
        pointer-events: none;
    }
    .subscribe-box::after {
        content: "";
        position: absolute;
        bottom: -60%;
        left: 10%;
        width: 250px;
        height: 250px;
        background: radial-gradient(circle, rgba(246, 182, 18, 0.06), transparent 70%);
        pointer-events: none;
    }
    .subscribe-input {
        flex: 1;
        min-width: 200px;
        height: 48px;
        border-radius: 12px;
        background: rgba(5, 7, 13, 0.6);
        border: 1px solid var(--glass-border);
        color: var(--body-text);
        font-size: 14px;
        padding: 0 16px;
        outline: none;
        transition: border-color .3s, box-shadow .3s;
    }
    .subscribe-input::placeholder {
        color: var(--faint-text);
    }
    .subscribe-input:focus {
        border-color: var(--primary);
        box-shadow: 0 0 0 2px rgba(45, 107, 255, 0.2);
    }
    header.site-header {
        position: sticky;
        top: 0;
        z-index: 100;
        height: 72px;
        background: rgba(5, 7, 13, 0.72);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--divider);
    }
    .logo-text {
        font-size: 20px;
        font-weight: 800;
        background: linear-gradient(135deg, #fff 30%, var(--gold) 70%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        letter-spacing: 0.02em;
        white-space: nowrap;
        line-height: 1.2;
    }
    .logo-mark {
        width: 38px;
        height: 38px;
        border-radius: 10px;
        background: linear-gradient(135deg, var(--primary), var(--accent));
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 4px 16px rgba(45, 107, 255, 0.4);
        position: relative;
    }
    .logo-mark::after {
        content: "";
        position: absolute;
        width: 10px;
        height: 10px;
        border-radius: 50%;
        background: var(--gold);
        box-shadow: 0 0 12px rgba(246, 182, 18, 0.6);
        top: 6px;
        right: 6px;
    }
    .nav-link {
        font-size: 14px;
        color: var(--muted-text);
        font-weight: 500;
        position: relative;
        padding: 4px 0;
        transition: color .3s;
        letter-spacing: 0.03em;
    }
    .nav-link::after {
        content: "";
        position: absolute;
        bottom: -2px;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 2px;
        background: linear-gradient(90deg, var(--primary), var(--accent));
        transition: width .3s;
        border-radius: 4px;
    }
    .nav-link:hover {
        color: #fff;
    }
    .nav-link:hover::after {
        width: 24px;
    }
    .nav-link.active {
        color: var(--gold);
        font-weight: 600;
    }
    .nav-link.active::after {
        width: 24px;
        background: var(--gold);
    }
    .mobile-menu {
        position: fixed;
        inset: 0;
        background: rgba(5, 7, 13, 0.97);
        backdrop-filter: blur(20px);
        z-index: 200;
        display: flex;
        flex-direction: column;
        padding: 24px;
        transform: translateX(100%);
        transition: transform .4s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .mobile-menu.open {
        transform: translateX(0);
    }
    .mobile-menu .close-btn {
        align-self: flex-end;
    }
    .mobile-nav-link {
        font-size: 20px;
        font-weight: 700;
        color: var(--body-text);
        padding: 16px 0;
        border-bottom: 1px solid var(--divider);
        transition: color .3s;
    }
    .mobile-nav-link:hover {
        color: var(--gold);
    }
    .mobile-nav-link.active {
        color: var(--gold);
    }
    .hero-glow {
        position: absolute;
        border-radius: 50%;
        filter: blur(80px);
        pointer-events: none;
    }
    .hero-card {
        border-radius: var(--radius-hero);
        background: rgba(11, 15, 26, 0.6);
        border: 1px solid rgba(45, 107, 255, 0.2);
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(45, 107, 255, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.06);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        overflow: hidden;
        transform: rotate(2deg);
        position: relative;
    }
    .hero-card img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        min-height: 260px;
    }
    .float-chip {
        position: absolute;
        bottom: 20px;
        left: 20px;
        background: rgba(5, 7, 13, 0.75);
        backdrop-filter: blur(12px);
        border: 1px solid var(--glass-border);
        border-radius: 14px;
        padding: 10px 16px;
        display: flex;
        align-items: center;
        gap: 10px;
        animation: floatY 3s ease-in-out infinite;
        font-size: 13px;
        color: var(--body-text);
        box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
    }
    @keyframes floatY {
        0%,
        100% {
            transform: translateY(0);
        }
        50% {
            transform: translateY(-6px);
        }
    }
    .track-dot {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--gold);
        opacity: 0.6;
        animation: pulseDot 1.5s ease-in-out infinite;
    }
    @keyframes pulseDot {
        0%,
        100% {
            opacity: 0.3;
            transform: scale(0.8);
        }
        50% {
            opacity: 0.9;
            transform: scale(1.2);
        }
    }
    .footer-col-title {
        font-size: 15px;
        font-weight: 600;
        color: var(--body-text);
        margin-bottom: 16px;
        position: relative;
        padding-bottom: 8px;
    }
    .footer-col-title::after {
        content: "";
        position: absolute;
        bottom: 0;
        left: 0;
        width: 24px;
        height: 2px;
        background: var(--gold);
        border-radius: 2px;
    }
    .footer-link {
        font-size: 14px;
        color: var(--muted-text);
        display: inline-block;
        padding: 6px 0;
        transition: color .3s, transform .3s;
    }
    .footer-link:hover {
        color: var(--gold);
        transform: translateX(4px);
    }
    .featured-grid-2x2 {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }
    .featured-card.tall {
        grid-row: span 1;
    }
    @media (max-width: 767px) {
        .featured-grid-2x2 {
            grid-template-columns: 1fr;
        }
        .container {
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        header.site-header {
            height: 64px;
        }
        .news-cover {
            height: 170px;
        }
        .trust-num {
            font-size: 28px;
        }
    }
    @media (min-width: 768px) and (max-width: 1023px) {
        .featured-grid-2x2 {
            grid-template-columns: 1fr 1fr;
        }
        .news-cover {
            height: 150px;
        }
    }
    @media (min-width: 1024px) {
        .featured-card.featured-main {
            grid-template-columns: 1fr 1fr;
        }
    }
    .backdrop-grid {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        pointer-events: none;
    }
    @media (max-width: 1023px) {
        .desktop-nav {
            display: none !important;
        }
        .mobile-toggle {
            display: flex !important;
        }
    }
    @media (min-width: 1024px) {
        .mobile-toggle {
            display: none !important;
        }
    }
    ::selection {
        background: rgba(45, 107, 255, 0.3);
        color: #fff;
    }
    .text-shadow-glow {
        text-shadow: 0 0 30px rgba(45, 107, 255, 0.3);
    }

/* roulang page: article */
:root {
            --bg: #05070D;
            --panel: #0B0F1A;
            --primary: #2D6BFF;
            --primary-hover: #4F86FF;
            --primary-active: #1D55E0;
            --cyan: #20C8FF;
            --gold: #F6B612;
            --gold-hover: #FFC83D;
            --text: #F2F6FF;
            --text-sub: #AAB8D0;
            --text-faint: #6C7A97;
            --border: rgba(255,255,255,0.08);
            --glass-border: rgba(255,255,255,0.12);
            --radius: 16px;
            --shadow: 0 10px 40px rgba(0,0,0,0.28), inset 0 1px 0 rgba(255,255,255,0.06);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg);
            color: var(--text);
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            line-height: 1.7;
            overflow-x: hidden;
            position: relative;
            font-variant-numeric: tabular-nums;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            background:
                radial-gradient(circle at 15% 8%, rgba(45,107,255,0.10), transparent 42%),
                radial-gradient(circle at 85% 92%, rgba(246,182,18,0.055), transparent 36%),
                linear-gradient(rgba(255,255,255,0.014) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,0.014) 1px, transparent 1px);
            background-size: auto, auto, 36px 36px, 36px 36px;
            z-index: -1;
            pointer-events: none;
        }

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

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

        button {
            font-family: inherit;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ═══ 导航 ═══ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            height: 72px;
            background: rgba(5, 7, 13, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .logo-mark {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(45, 107, 255, 0.88), rgba(32, 200, 255, 0.88));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 20px rgba(45, 107, 255, 0.35);
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 1.05rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            background: linear-gradient(135deg, #ffffff 20%, #f6b612 90%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            white-space: nowrap;
        }

        .desktop-nav .nav-link {
            position: relative;
            font-size: 14px;
            color: var(--text-sub);
            padding: 6px 2px;
            transition: color 0.3s;
            line-height: 1;
        }

        .desktop-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: -4px;
            width: 0;
            height: 3px;
            border-radius: 2px;
            background: var(--primary);
            transform: translateX(-50%);
            transition: width 0.3s ease;
        }

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

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

        .desktop-nav .nav-link.active {
            color: var(--text);
        }

        .desktop-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: -4px;
            width: 100%;
            height: 3px;
            border-radius: 2px;
            background: var(--gold);
            transform: translateX(-50%);
            box-shadow: 0 0 12px rgba(246, 182, 18, 0.5);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            font-weight: 600;
            font-size: 14px;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
            height: 44px;
            padding: 0 1.5rem;
            line-height: 1;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--cyan) 100%);
            color: #fff;
            box-shadow: 0 8px 28px rgba(45, 107, 255, 0.30);
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, var(--primary-hover) 0%, #51d8ff 100%);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(45, 107, 255, 0.4);
        }

        .btn-primary:active {
            background: linear-gradient(135deg, var(--primary-active) 0%, #17a9d6 100%);
            transform: translateY(0);
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.22);
            transform: translateY(-2px);
        }

        .btn-slim {
            height: 38px;
            padding: 0 1rem;
            font-size: 13px;
        }

        /* 移动端抽屉 */
        .mobile-toggle {
            display: inline-flex;
        }

        .mobile-menu {
            position: fixed;
            top: 0;
            right: -100%;
            width: 320px;
            max-width: 85vw;
            height: 100vh;
            background: rgba(5, 7, 13, 0.97);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 60;
            padding: 2rem 1.5rem;
            transition: right 0.4s cubic-bezier(0.22, 1, 0.36, 1);
            display: flex;
            flex-direction: column;
            border-left: 1px solid rgba(255, 255, 255, 0.08);
        }

        .mobile-menu.open {
            right: 0;
        }

        .mobile-menu .mobile-nav-link {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-sub);
            padding: 0.75rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: color 0.3s;
        }

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

        .mobile-menu .mobile-nav-link.active {
            color: var(--text);
        }

        .mobile-menu .mobile-nav-link.active::before {
            content: "";
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--gold);
            margin-right: 8px;
            vertical-align: middle;
        }

        .mobile-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 55;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
        }

        .mobile-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        /* ═══ 面包屑 ═══ */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            font-size: 14px;
            color: var(--text-faint);
        }

        .breadcrumb a {
            color: var(--text-faint);
            transition: color 0.3s;
        }

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

        .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.25);
            font-size: 13px;
        }

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

        /* ═══ 文章标题区 ═══ */
        .article-title {
            font-size: clamp(1.6rem, 4vw, 2.4rem);
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin-bottom: 1rem;
            color: var(--text);
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.6rem 1.2rem;
            font-size: 13px;
            color: var(--text-faint);
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            color: var(--text-faint);
        }

        .meta-item svg {
            width: 15px;
            height: 15px;
            color: var(--text-faint);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 12px;
            color: var(--gold);
            background: rgba(246, 182, 18, 0.1);
            border: 1px solid rgba(246, 182, 18, 0.25);
        }

        .article-divider {
            height: 1px;
            background: rgba(255, 255, 255, 0.06);
            margin: 2.5rem 0;
        }

        /* ═══ 正文 ═══ */
        .article-content {
            font-size: 1.0625rem;
            line-height: 1.8;
            color: #B8C6DE;
        }

        .article-content > * {
            margin-bottom: 1.5em;
        }

        .article-content h1,
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: var(--text);
            line-height: 1.4;
            margin-top: 2em;
            margin-bottom: 0.7em;
            font-weight: 700;
        }

        .article-content h2 {
            font-size: 1.5rem;
        }

        .article-content h3 {
            font-size: 1.25rem;
        }

        .article-content h4 {
            font-size: 1.1rem;
        }

        .article-content p {
            color: #B8C6DE;
            font-size: 1.0625rem;
            line-height: 1.8;
            margin: 1.4em 0;
        }

        .article-content a {
            color: var(--primary-hover);
            border-bottom: 1px solid rgba(45, 107, 255, 0.3);
            transition: all 0.3s;
        }

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

        .article-content img {
            max-width: 100%;
            height: auto;
            border-radius: 16px;
            margin: 2em auto;
        }

        .article-content blockquote {
            border-left: 4px solid var(--gold);
            background: rgba(246, 182, 18, 0.06);
            padding: 1rem 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 2em 0;
            color: var(--text-sub);
        }

        .article-content blockquote p {
            margin: 0.5em 0;
        }

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

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

        .article-content ul {
            list-style: none;
            padding: 0;
            margin: 1.5em 0;
        }

        .article-content ul li {
            position: relative;
            padding-left: 1.5em;
            margin: 0.6em 0;
            color: #B8C6DE;
        }

        .article-content ul li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0.65em;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
        }

        .article-content ol {
            list-style: none;
            counter-reset: article-ol;
            padding: 0;
            margin: 1.5em 0;
        }

        .article-content ol li {
            counter-increment: article-ol;
            position: relative;
            padding-left: 2.2em;
            margin: 0.6em 0;
            color: #B8C6DE;
        }

        .article-content ol li::before {
            content: counter(article-ol);
            position: absolute;
            left: 0;
            top: 0.1em;
            width: 1.5em;
            height: 1.5em;
            border-radius: 50%;
            background: rgba(45, 107, 255, 0.15);
            color: var(--primary-hover);
            font-size: 0.8em;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 2em 0;
            font-size: 0.9rem;
            border-radius: 12px;
            overflow: hidden;
        }

        .article-content th {
            background: rgba(45, 107, 255, 0.12);
            color: var(--text);
            padding: 0.8em 1em;
            text-align: left;
            font-weight: 700;
        }

        .article-content td {
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 0.8em 1em;
            color: var(--text-sub);
        }

        .article-content tr:last-child td {
            border-bottom: none;
        }

        .article-content code {
            background: rgba(255, 255, 255, 0.08);
            padding: 0.2em 0.5em;
            border-radius: 6px;
            font-size: 0.9em;
            font-family: "SF Mono", "JetBrains Mono", Consolas, monospace;
            color: var(--cyan);
        }

        .article-content pre {
            background: var(--panel);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 1.5em;
            border-radius: 16px;
            overflow-x: auto;
            margin: 2em 0;
        }

        .article-content pre code {
            background: none;
            padding: 0;
            color: #E6EDF7;
        }

        .article-content hr {
            border: none;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin: 2.5em 0;
        }

        /* ═══ 标签 & 分享 ═══ */
        .tag-badge {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 12px;
            color: var(--text-sub);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.3s;
            cursor: default;
        }

        .tag-badge:hover {
            color: var(--text);
            border-color: rgba(255, 255, 255, 0.22);
            background: rgba(255, 255, 255, 0.08);
        }

        .share-btn {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--text-sub);
            cursor: pointer;
            transition: all 0.3s;
        }

        .share-btn:hover {
            background: rgba(45, 107, 255, 0.15);
            border-color: var(--primary);
            color: var(--primary-hover);
            transform: translateY(-2px);
        }

        /* ═══ 相关推荐 ═══ */
        .section-title {
            font-size: clamp(1.2rem, 2.5vw, 1.6rem);
            font-weight: 700;
            color: var(--text);
            position: relative;
            padding-left: 0.9rem;
            margin-bottom: 1.6rem;
        }

        .section-title::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0.18em;
            bottom: 0.18em;
            width: 4px;
            border-radius: 2px;
            background: var(--gold);
        }

        .related-card {
            display: flex;
            align-items: center;
            gap: 0.9rem;
            background: var(--panel);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            padding: 0.7rem;
            transition: all 0.4s ease;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.18);
        }

        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(45, 107, 255, 0.4);
            box-shadow: 0 18px 45px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(45, 107, 255, 0.15);
        }

        .related-thumb {
            width: 96px;
            height: 72px;
            border-radius: 10px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--panel);
        }

        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .related-card:hover .related-thumb img {
            transform: scale(1.08);
        }

        .related-info {
            flex: 1;
            min-width: 0;
        }

        .related-info h3 {
            font-size: 14px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 0.2rem;
        }

        .related-info .related-date {
            font-size: 12px;
            color: var(--text-faint);
        }

        /* ═══ 空状态 ═══ */
        .empty-state {
            background: var(--panel);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            padding: 4rem 2rem;
            text-align: center;
        }

        .empty-state .empty-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
            color: var(--text-faint);
        }

        /* ═══ Toast ═══ */
        .toast {
            position: fixed;
            bottom: 2rem;
            left: 50%;
            transform: translateX(-50%) translateY(20px);
            background: rgba(11, 15, 26, 0.95);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text);
            padding: 0.75rem 1.5rem;
            border-radius: 12px;
            font-size: 14px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s, transform 0.3s, visibility 0.3s;
            pointer-events: none;
        }

        .toast.show {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }

        /* ═══ 页脚 ═══ */
        .footer-col-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 0.8rem;
        }

        .footer-link {
            display: block;
            font-size: 13px;
            color: var(--text-faint);
            padding: 0.25rem 0;
            transition: color 0.3s;
        }

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

        /* ═══ 响应式 ═══ */
        @media (max-width: 1023px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-toggle {
                display: inline-flex !important;
            }
        }

        @media (min-width: 1024px) {
            .mobile-toggle {
                display: none !important;
            }
        }

        @media (max-width: 767px) {
            .article-title {
                font-size: 1.4rem;
                line-height: 1.35;
            }
            .related-card {
                padding: 0.6rem;
            }
            .related-thumb {
                width: 80px;
                height: 64px;
            }
            .article-meta {
                gap: 0.5rem 0.8rem;
                font-size: 12px;
            }
            .badge {
                font-size: 11px;
                padding: 3px 10px;
            }
        }

        @media (max-width: 480px) {
            .article-content p {
                font-size: 1rem;
            }
            .related-thumb {
                width: 72px;
                height: 60px;
            }
        }

        /* 焦点可见性 */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary-hover);
            outline-offset: 2px;
        }

        .article-content a:focus-visible {
            outline: 2px solid var(--primary-hover);
            outline-offset: 2px;
        }

        /* 玻璃卡高光线 */
        .glass-card {
            position: relative;
            overflow: hidden;
        }

        .glass-card::before {
            content: "";
            position: absolute;
            top: -1px;
            left: -40%;
            width: 30%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
            transform: rotate(45deg);
            pointer-events: none;
        }

/* roulang page: category1 */
:root {
            --bg: #05070D;
            --panel: #0B0F1A;
            --primary: #2D6BFF;
            --primary-hover: #4F86FF;
            --primary-active: #1D55E0;
            --cyan: #20C8FF;
            --gold: #F6B612;
            --gold-hover: #FFC83D;
            --ink: #F2F6FF;
            --ink-secondary: #AAB8D0;
            --faint: #6C7A97;
            --border: rgba(255, 255, 255, 0.08);
            --glass-border: rgba(255, 255, 255, 0.12);
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.06);
            --shadow-btn: 0 8px 28px rgba(45, 107, 255, 0.30);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg);
            color: var(--ink);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            font-variant-numeric: tabular-nums;
            letter-spacing: 0.02em;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            background: none;
            border: none;
            color: inherit;
        }

        input {
            font-family: inherit;
            outline: none;
        }

        .bg-fixed-decor {
            position: fixed;
            inset: 0;
            z-index: 0;
            pointer-events: none;
            background:
                radial-gradient(ellipse at 12% 8%, rgba(32, 200, 255, 0.07), transparent 45%),
                radial-gradient(ellipse at 88% 92%, rgba(246, 182, 18, 0.05), transparent 40%),
                linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
            background-size: auto, auto, 60px 60px, 60px 60px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            height: 72px;
            background: rgba(5, 7, 13, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .logo-mark {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 20px rgba(45, 107, 255, 0.4);
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 1.1rem;
            font-weight: 700;
            background: linear-gradient(120deg, #FFFFFF 30%, #F6B612 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .desktop-nav {
            display: none;
        }

        @media (min-width: 768px) {
            .desktop-nav {
                display: flex;
            }
        }

        .nav-link {
            position: relative;
            font-size: 14px;
            color: var(--ink-secondary);
            font-weight: 500;
            padding: 6px 2px;
            transition: color 0.3s;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: -2px;
            width: 0;
            height: 3px;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--primary), var(--cyan));
            transform: translateX(-50%);
            transition: width 0.3s;
        }

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

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

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

        .nav-link.active::after {
            width: 100%;
            background: var(--gold);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            color: #fff;
            box-shadow: var(--shadow-btn);
            min-height: 48px;
            padding: 0 28px;
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, var(--primary-hover), #35D4FF);
            transform: translateY(-2px);
            box-shadow: 0 12px 34px rgba(45, 107, 255, 0.45);
        }

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

        .btn-secondary {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            color: var(--ink);
            min-height: 48px;
            padding: 0 28px;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.25);
        }

        .mobile-toggle {
            display: flex;
        }

        @media (min-width: 768px) {
            .mobile-toggle {
                display: none;
            }
        }

        .mobile-menu {
            position: fixed;
            inset: 0;
            z-index: 100;
            background: rgba(5, 7, 13, 0.98);
            padding: 24px;
            display: flex;
            flex-direction: column;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-20px);
            transition: all 0.3s ease;
        }

        .mobile-menu.open {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .mobile-menu-nav {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin: 32px 0;
        }

        .mobile-menu-nav .nav-link {
            font-size: 18px;
            font-weight: 600;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--ink-secondary);
        }

        .mobile-menu-nav .nav-link.active {
            color: var(--gold);
        }

        .glass-card {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--glass-border);
            border-radius: 20px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            position: relative;
        }

        .glass-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 12px;
            width: 60%;
            height: 1px;
            background: linear-gradient(90deg, rgba(255, 255, 255, 0.35), transparent);
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--gold);
            letter-spacing: 0.05em;
            padding: 4px 14px 4px 10px;
            border: 1px solid rgba(246, 182, 18, 0.25);
            background: rgba(246, 182, 18, 0.08);
            border-radius: 999px;
        }

        .section-tag::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--gold);
            box-shadow: 0 0 8px rgba(246, 182, 18, 0.8);
        }

        .category-tabs {
            display: inline-flex;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 999px;
            padding: 4px;
            gap: 4px;
        }

        .category-tabs .tab {
            padding: 8px 22px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: var(--ink-secondary);
            transition: all 0.3s;
        }

        .category-tabs .tab:hover {
            color: var(--ink);
        }

        .category-tabs .tab.active {
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            color: #fff;
            box-shadow: 0 4px 16px rgba(45, 107, 255, 0.35);
        }

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

        .breadcrumb a {
            transition: color 0.3s;
        }

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

        .breadcrumb .sep {
            margin: 0 10px;
            color: rgba(255, 255, 255, 0.2);
        }

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

        .hero-lights {
            position: absolute;
            bottom: 28px;
            left: 50%;
            transform: translateX(-50%);
            display: none;
            gap: 10px;
            z-index: 1;
        }

        @media (min-width: 768px) {
            .hero-lights {
                display: flex;
            }
        }

        .hero-lights span {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.15);
        }

        .hero-lights span:nth-child(even) {
            background: rgba(246, 182, 18, 0.35);
        }

        .check-list {
            list-style: none;
            padding: 0;
        }

        .check-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--ink-secondary);
            padding: 8px 0;
            line-height: 1.6;
        }

        .check-list li::before {
            content: "✓";
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(246, 182, 18, 0.12);
            color: var(--gold);
            font-size: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-top: 2px;
        }

        .image-card {
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid rgba(45, 107, 255, 0.3);
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .image-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 12px;
            width: 60%;
            height: 1px;
            background: linear-gradient(90deg, rgba(255, 255, 255, 0.4), transparent);
            z-index: 2;
        }

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

        .content-card {
            background: var(--panel);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.3s ease;
            display: block;
            height: 100%;
        }

        .content-card:hover {
            transform: translateY(-6px);
            border-color: rgba(255, 255, 255, 0.15);
            box-shadow: var(--shadow-card);
        }

        .content-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .content-card:hover img {
            transform: scale(1.03);
        }

        .content-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--ink);
            line-height: 1.45;
        }

        .content-card p {
            font-size: 14px;
            color: var(--ink-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-hover);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.3s;
        }

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

        .faq-list {
            border-top: 1px solid var(--border);
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
        }

        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            text-align: left;
            transition: color 0.3s;
        }

        .faq-question:hover {
            color: #fff;
        }

        .faq-question .arrow {
            transition: transform 0.3s;
            flex-shrink: 0;
            margin-left: 16px;
            color: var(--faint);
        }

        .faq-item.open .faq-question .arrow {
            transform: rotate(180deg);
            color: var(--gold);
        }

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

        .faq-item.open .faq-answer {
            max-height: 320px;
            opacity: 1;
            padding-bottom: 20px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--ink-secondary);
            line-height: 1.8;
        }

        .cta-box {
            background: linear-gradient(135deg, rgba(11, 15, 26, 0.95), rgba(13, 20, 36, 0.9));
            border: 1px solid var(--glass-border);
            border-radius: 24px;
            padding: 40px 28px;
            text-align: center;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        @media (min-width: 768px) {
            .cta-box {
                padding: 48px;
            }
        }

        .cta-box::before {
            content: "";
            position: absolute;
            top: -40px;
            left: -40px;
            width: 160px;
            height: 160px;
            background: radial-gradient(circle, rgba(45, 107, 255, 0.2), transparent 70%);
            pointer-events: none;
        }

        .cta-box::after {
            content: "";
            position: absolute;
            bottom: -60px;
            right: -40px;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(246, 182, 18, 0.1), transparent 70%);
            pointer-events: none;
        }

        .subscribe-form {
            display: flex;
            gap: 12px;
            max-width: 480px;
            margin: 24px auto 0;
            position: relative;
            z-index: 2;
        }

        .subscribe-form input {
            flex: 1;
            height: 48px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 0 16px;
            color: var(--ink);
            font-size: 14px;
            transition: border-color 0.3s, box-shadow 0.3s;
        }

        .subscribe-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(45, 107, 255, 0.15);
        }

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

        .subscribe-form .btn {
            flex-shrink: 0;
            height: 48px;
        }

        @media (max-width: 767px) {
            .subscribe-form {
                flex-direction: column;
            }
        }

        .footer-col-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 12px;
        }

        .footer-link {
            font-size: 13px;
            color: var(--ink-secondary);
            transition: color 0.3s;
            line-height: 2;
        }

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

/* roulang page: category2 */
:root {
            --color-base: #05070D;
            --color-panel: #0B0F1A;
            --color-primary: #2D6BFF;
            --color-primary-hover: #4F86FF;
            --color-primary-active: #1D55E0;
            --color-cyan: #20C8FF;
            --color-gold: #F6B612;
            --color-gold-hover: #FFC83D;
            --color-text: #F2F6FF;
            --color-sub: #AAB8D0;
            --color-faint: #6C7A97;
            --border-light: rgba(255, 255, 255, 0.08);
            --border-glass: rgba(255, 255, 255, 0.12);
            --radius-card: 16px;
            --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.06);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--color-base);
            color: var(--color-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
            font-size: 16px;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            display: block;
            max-width: 100%;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            background: none;
            border: none;
        }
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        .page-bg {
            position: fixed;
            inset: 0;
            z-index: 0;
            pointer-events: none;
        }
        .page-bg::before {
            content: "";
            position: absolute;
            top: -120px;
            left: -100px;
            width: 560px;
            height: 560px;
            background: radial-gradient(circle, rgba(45, 107, 255, 0.18) 0%, transparent 70%);
        }
        .page-bg::after {
            content: "";
            position: absolute;
            right: -120px;
            top: 28%;
            width: 520px;
            height: 520px;
            background: radial-gradient(circle, rgba(246, 182, 18, 0.08) 0%, transparent 70%);
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            height: 72px;
            background: rgba(5, 7, 13, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
        }
        .site-header,
        main,
        footer {
            position: relative;
            z-index: 1;
        }
        .logo-mark {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-cyan));
            box-shadow: 0 8px 28px rgba(45, 107, 255, 0.30);
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 1.15rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            background: linear-gradient(120deg, #fff 40%, var(--color-gold));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            white-space: nowrap;
        }
        .desktop-nav {
            display: none;
        }
        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            color: var(--color-sub);
            padding: 8px 0;
            transition: color 0.3s;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 0;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--color-primary);
            transition: width 0.3s;
            border-radius: 2px;
        }
        .nav-link:hover {
            color: #fff;
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--color-text);
        }
        .nav-link.active::after {
            width: 24px;
            background: var(--color-gold);
        }
        @media (min-width: 768px) {
            .desktop-nav {
                display: flex;
                align-items: center;
                gap: 32px;
            }
            .mobile-toggle {
                display: none;
            }
        }
        .mobile-toggle {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 10px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 12px;
            font-size: 14px;
            font-weight: 500;
            padding: 12px 24px;
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--color-primary), var(--color-cyan));
            color: #fff;
            box-shadow: 0 8px 28px rgba(45, 107, 255, 0.30);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 36px rgba(45, 107, 255, 0.45);
            background: linear-gradient(135deg, var(--color-primary-hover), var(--color-cyan));
        }
        .btn-primary:active {
            transform: translateY(0);
            background: var(--color-primary-active);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.05);
            color: var(--color-text);
            border: 1px solid var(--border-glass);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.10);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.22);
        }
        .mobile-menu {
            position: fixed;
            inset: 0;
            z-index: 100;
            background: rgba(5, 7, 13, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            display: flex;
            flex-direction: column;
            padding: 24px;
            transform: translateX(100%);
            transition: transform 0.35s ease;
        }
        .mobile-menu.open {
            transform: translateX(0);
        }
        @media (min-width: 768px) {
            .mobile-menu {
                display: none;
            }
        }
        .mobile-nav-link {
            font-size: 18px;
            font-weight: 700;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .mobile-nav-link.active {
            color: var(--color-gold);
        }
        .mobile-nav-link.active::after {
            display: none;
        }
        .page-hero {
            position: relative;
            padding: 80px 0 72px;
            background-image: url("/assets/images/backpic/back-2.webp");
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(5, 7, 13, 0.86) 0%, rgba(5, 7, 13, 0.72) 100%);
            z-index: 1;
        }
        .page-hero::after {
            content: "";
            position: absolute;
            bottom: -80px;
            right: -60px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(246, 182, 18, 0.12) 0%, transparent 70%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-title {
            font-size: clamp(2.2rem, 6vw, 3.6rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
            color: var(--color-text);
        }
        .hero-sub {
            font-size: 16px;
            color: var(--color-sub);
            max-width: 540px;
            line-height: 1.8;
        }
        .hero-aside {
            border-left: 1px solid var(--border-light);
            padding-left: 28px;
        }
        .section-head {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            margin-bottom: 40px;
        }
        .section-head::before {
            content: "";
            flex-shrink: 0;
            width: 4px;
            height: 28px;
            border-radius: 2px;
            background: var(--color-gold);
            margin-top: 4px;
        }
        .section-tag {
            font-size: 13px;
            color: var(--color-gold);
            letter-spacing: 0.4px;
            font-weight: 500;
            display: block;
            margin-bottom: 6px;
        }
        .section-head h2 {
            font-size: clamp(1.5rem, 4vw, 2.4rem);
            font-weight: 700;
            line-height: 1.25;
            color: var(--color-text);
        }
        .cat-tabs {
            display: inline-flex;
            gap: 6px;
            background: rgba(255, 255, 255, 0.04);
            padding: 6px;
            border-radius: 12px;
            border: 1px solid var(--border-light);
        }
        .cat-tab {
            display: inline-flex;
            align-items: center;
            padding: 10px 24px;
            border-radius: 8px;
            font-size: 14px;
            color: var(--color-sub);
            transition: all 0.3s;
            white-space: nowrap;
        }
        .cat-tab:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .cat-tab.active {
            color: var(--color-text);
            background: linear-gradient(135deg, var(--color-primary), var(--color-cyan));
            box-shadow: 0 6px 20px rgba(45, 107, 255, 0.30);
        }
        .step-card {
            background: var(--color-panel);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px;
            transition: all 0.3s;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.18);
        }
        .step-card:hover {
            border-color: rgba(255, 255, 255, 0.18);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }
        .step-num {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-gold);
            letter-spacing: 0.5px;
        }
        .step-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-top: 12px;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--color-sub);
            line-height: 1.7;
        }
        .content-card {
            position: relative;
            background: var(--color-panel);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.3s;
            box-shadow: var(--shadow-card);
        }
        .content-card:hover {
            transform: translateY(-6px);
            border-color: rgba(255, 255, 255, 0.18);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.36), inset 0 1px 0 rgba(255, 255, 255, 0.08);
        }
        .card-img {
            width: 100%;
            height: 190px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .content-card:hover .card-img {
            transform: scale(1.04);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            color: var(--color-gold);
            background: rgba(246, 182, 18, 0.10);
            border: 1px solid rgba(246, 182, 18, 0.28);
            margin-bottom: 12px;
        }
        .card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .card-desc {
            font-size: 14px;
            color: var(--color-sub);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-primary);
            transition: color 0.3s;
        }
        .card-link:hover {
            color: var(--color-gold);
        }
        .bg-panel-30 {
            background: rgba(11, 15, 26, 0.30);
        }
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-light);
        }
        .faq-item:first-child {
            border-top: 1px solid var(--border-light);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 22px 4px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            text-align: left;
            transition: color 0.3s;
        }
        .faq-question:hover {
            color: var(--color-gold);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            color: var(--color-faint);
            transition: transform 0.3s, color 0.3s;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            color: var(--color-gold);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            opacity: 0;
            transition: max-height 0.35s ease, opacity 0.35s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 280px;
            opacity: 1;
            padding-bottom: 22px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--color-sub);
            line-height: 1.8;
            padding-right: 32px;
        }
        .cta-box {
            position: relative;
            background: var(--color-panel);
            border: 1px solid var(--border-glass);
            border-radius: 20px;
            padding: 48px 32px;
            text-align: center;
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }
        .cta-box::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 160px;
            height: 4px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-cyan));
            border-radius: 0 4px 4px 0;
        }
        .cta-box::after {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(246, 182, 18, 0.10) 0%, transparent 70%);
            pointer-events: none;
        }
        .newsletter-input {
            width: 100%;
            max-width: 380px;
            height: 48px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-glass);
            border-radius: 12px;
            padding: 0 16px;
            color: var(--color-text);
            font-size: 14px;
            outline: none;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .newsletter-input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 2px rgba(45, 107, 255, 0.25);
        }
        .newsletter-input::placeholder {
            color: var(--color-faint);
        }
        .footer-col-title {
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 14px;
            color: var(--color-text);
        }
        .footer-link {
            display: block;
            padding: 6px 0;
            font-size: 14px;
            color: var(--color-faint);
            transition: color 0.3s;
        }
        .footer-link:hover {
            color: var(--color-text);
        }
        .check-icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(246, 182, 18, 0.15);
            color: var(--color-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            margin-top: 3px;
        }
        @media (max-width: 767px) {
            .hero-aside {
                border-left: none;
                padding-left: 0;
                border-top: 1px solid var(--border-light);
                padding-top: 20px;
            }
            .cta-box {
                padding: 36px 20px;
            }
            .content-card .card-img {
                height: 160px;
            }
        }
        @media (min-width: 768px) and (max-width: 1023px) {
            .content-card .card-img {
                height: 180px;
            }
        }