/* roulang page: index */
/* ===== Design Tokens ===== */
    :root {
        --bg-base: #0A1324;
        --bg-secondary: #0E1C35;
        --bg-deeper: #060D1A;
        --brand-blue: #2E6BFF;
        --accent-cyan: #45E6FF;
        --accent-amber: #FFC857;
        --glass-bg: rgba(255, 255, 255, 0.05);
        --glass-border: rgba(255, 255, 255, 0.12);
        --glass-highlight: rgba(69, 230, 255, 0.5);
        --text-primary: rgba(255, 255, 255, 0.95);
        --text-secondary: rgba(255, 255, 255, 0.72);
        --text-muted: rgba(255, 255, 255, 0.5);
        --radius-card: 16px;
        --radius-image: 12px;
        --radius-button: 10px;
        --radius-search: 999px;
        --radius-faq: 14px;
        --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.25);
        --shadow-glow: 0 0 18px rgba(46, 107, 255, 0.45);
        --section-pad-desktop: 96px;
        --section-pad-mobile: 56px;
        --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans SC", sans-serif;
    }

    /* ===== Reset / Base ===== */
    *, *::before, *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font-family);
        font-size: 15px;
        line-height: 1.75;
        color: var(--text-primary);
        background-color: var(--bg-base);
        background-image:
            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: 48px 48px;
        -webkit-font-smoothing: antialiased;
        overflow-x: hidden;
    }
    img {
        max-width: 100%;
        display: block;
        border-radius: var(--radius-image);
    }
    a {
        color: var(--accent-cyan);
        text-decoration: none;
        transition: color 0.25s ease;
    }
    a:hover, a:focus {
        color: var(--accent-cyan);
    }
    button, input, select, textarea {
        font-family: inherit;
        font-size: inherit;
        outline: none;
    }
    .container-custom {
        max-width: 1200px;
        margin: 0 auto;
        padding-left: 24px;
        padding-right: 24px;
        width: 100%;
    }
    .section-pad {
        padding-top: var(--section-pad-desktop);
        padding-bottom: var(--section-pad-desktop);
    }
    @media (max-width: 40em) {
        .section-pad {
            padding-top: var(--section-pad-mobile);
            padding-bottom: var(--section-pad-mobile);
        }
    }

    /* ===== Top Countdown Ribbon ===== */
    .countdown-bar {
        width: 100%;
        height: 48px;
        background: linear-gradient(90deg, #0B1529, #0E1C35 60%, #0B1529);
        border-bottom: 1px solid rgba(69, 230, 255, 0.18);
        display: flex;
        align-items: center;
        position: relative;
        z-index: 1100;
    }
    .countdown-bar .container-custom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
    }
    .countdown-label {
        font-size: 13px;
        color: var(--text-secondary);
        display: flex;
        align-items: center;
        gap: 8px;
        white-space: nowrap;
    }
    .countdown-label i {
        color: var(--accent-cyan);
        font-size: 12px;
    }
    .countdown-label strong {
        color: var(--text-primary);
        font-weight: 600;
        margin-left: 4px;
    }
    .countdown-timer {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .countdown-unit {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .countdown-num {
        min-width: 32px;
        height: 28px;
        padding: 0 6px;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(69, 230, 255, 0.22);
        border-radius: 8px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-family: "SF Mono", "Roboto Mono", Consolas, monospace;
        font-size: 15px;
        font-weight: 600;
        color: var(--accent-cyan);
        text-shadow: 0 0 12px rgba(69, 230, 255, 0.55);
        backdrop-filter: blur(10px);
    }
    .countdown-label-text {
        font-size: 11px;
        color: var(--text-muted);
        margin-left: -2px;
    }
    .countdown-sep {
        color: rgba(69, 230, 255, 0.5);
        font-size: 13px;
        font-weight: 600;
    }
    .countdown-cta a {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 12px;
        font-weight: 600;
        color: #fff;
        background: linear-gradient(135deg, var(--brand-blue), var(--accent-cyan));
        border-radius: var(--radius-button);
        padding: 6px 16px;
        box-shadow: 0 0 14px rgba(46, 107, 255, 0.4);
        transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .countdown-cta a:hover {
        transform: translateY(-1px);
        box-shadow: 0 0 22px rgba(46, 107, 255, 0.6);
    }
    @media (max-width: 40em) {
        .countdown-bar {
            height: auto;
            padding: 6px 0;
        }
        .countdown-bar .container-custom {
            flex-direction: column;
            gap: 6px;
            align-items: center;
            text-align: center;
        }
        .countdown-cta {
            display: none;
        }
    }

    /* ===== Header / Nav ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1050;
        background: rgba(10, 19, 36, 0.82);
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .site-header .container-custom {
        display: flex;
        align-items: center;
        gap: 24px;
        height: 72px;
        position: relative;
    }
    .brand-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
        width: 150px;
    }
    .brand-logo .logo-mark {
        width: 36px;
        height: 36px;
        border-radius: 10px;
        background: linear-gradient(135deg, var(--brand-blue), var(--accent-cyan));
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-weight: 800;
        font-size: 14px;
        box-shadow: 0 0 16px rgba(46, 107, 255, 0.35);
        flex-shrink: 0;
    }
    .brand-logo .logo-text {
        font-size: 20px;
        font-weight: 700;
        color: var(--text-primary);
        letter-spacing: 0.5px;
        white-space: nowrap;
    }
    .header-search {
        flex: 1;
        max-width: 560px;
        position: relative;
        margin: 0 auto;
    }
    .header-search-box {
        display: flex;
        align-items: center;
        gap: 10px;
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: var(--radius-search);
        padding: 0 16px;
        height: 40px;
        transition: border-color 0.3s ease, box-shadow 0.3s ease;
    }
    .header-search-box:focus-within {
        border-color: rgba(69, 230, 255, 0.6);
        box-shadow: 0 0 16px rgba(69, 230, 255, 0.22), 0 0 0 2px rgba(69, 230, 255, 0.08);
    }
    .header-search-box svg {
        width: 16px;
        height: 16px;
        stroke: var(--text-muted);
        flex-shrink: 0;
        transition: stroke 0.3s ease;
    }
    .header-search-box:focus-within svg {
        stroke: var(--accent-cyan);
    }
    .header-search-box input {
        flex: 1;
        background: transparent;
        border: none;
        color: var(--text-primary);
        font-size: 14px;
        line-height: 40px;
        width: 100%;
        min-width: 0;
    }
    .header-search-box input::placeholder {
        color: var(--text-muted);
    }
    .search-suggest {
        position: absolute;
        top: calc(100% + 8px);
        left: 0;
        right: 0;
        background: rgba(14, 28, 53, 0.92);
        backdrop-filter: blur(18px);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: 14px;
        padding: 10px;
        box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-6px);
        transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
    }
    .search-suggest.show {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    .search-suggest-item {
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 8px 12px;
        border-radius: 8px;
        font-size: 14px;
        color: var(--text-secondary);
        cursor: pointer;
        transition: background 0.2s ease, color 0.2s ease;
    }
    .search-suggest-item:hover,
    .search-suggest-item:focus {
        background: rgba(69, 230, 255, 0.08);
        color: var(--accent-cyan);
    }
    .search-suggest-item i {
        font-size: 12px;
        color: var(--text-muted);
        width: 16px;
        text-align: center;
    }
    .main-nav {
        display: flex;
        align-items: center;
        gap: 8px;
        flex-shrink: 0;
        margin-left: auto;
    }
    .main-nav a {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 8px 14px;
        font-size: 14px;
        font-weight: 500;
        color: var(--text-secondary);
        border-radius: 8px;
        position: relative;
        transition: color 0.25s ease, background 0.25s ease;
    }
    .main-nav a i {
        font-size: 13px;
        opacity: 0.7;
    }
    .main-nav a:hover {
        color: var(--text-primary);
        background: rgba(255, 255, 255, 0.04);
    }
    .main-nav a.active {
        color: var(--accent-cyan);
        background: rgba(69, 230, 255, 0.06);
    }
    .main-nav a.active::after {
        content: '';
        position: absolute;
        left: 14px;
        right: 14px;
        bottom: 2px;
        height: 2px;
        border-radius: 2px;
        background: var(--accent-cyan);
        box-shadow: 0 0 12px rgba(69, 230, 255, 0.6);
    }
    .hamburger {
        display: none;
        width: 40px;
        height: 40px;
        border: none;
        background: transparent;
        border-radius: 8px;
        cursor: pointer;
        position: relative;
    }
    .hamburger span {
        display: block;
        width: 20px;
        height: 2px;
        background: var(--text-primary);
        margin: 4px auto;
        border-radius: 2px;
        transition: transform 0.3s ease, opacity 0.3s ease;
    }
    .hamburger.open span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }
    .hamburger.open span:nth-child(2) {
        opacity: 0;
    }
    .hamburger.open span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }
    .mobile-nav {
        display: none;
        background: rgba(10, 19, 36, 0.96);
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding: 12px 0;
    }
    .mobile-nav a {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 10px 24px;
        font-size: 15px;
        color: var(--text-secondary);
    }
    .mobile-nav a i {
        width: 18px;
        text-align: center;
        font-size: 13px;
    }
    .mobile-nav a.active {
        color: var(--accent-cyan);
        background: rgba(69, 230, 255, 0.04);
    }
    @media (max-width: 64em) {
        .main-nav {
            display: none;
        }
        .hamburger {
            display: inline-block;
        }
        .mobile-nav.open {
            display: block;
        }
        .brand-logo {
            width: auto;
        }
    }
    @media (max-width: 40em) {
        .site-header .container-custom {
            gap: 12px;
            height: 60px;
        }
        .brand-logo .logo-mark {
            width: 30px;
            height: 30px;
            font-size: 12px;
        }
        .brand-logo .logo-text {
            font-size: 17px;
        }
        .header-search {
            max-width: none;
        }
        .header-search-box {
            height: 36px;
            padding: 0 12px;
        }
        .header-search-box input {
            font-size: 13px;
            line-height: 36px;
        }
    }

    /* ===== Hero ===== */
    .hero {
        position: relative;
        background:
            linear-gradient(135deg, rgba(10, 19, 36, 0.92), rgba(14, 28, 53, 0.78)),
            url('/assets/images/backpic/back-1.png') center / cover no-repeat;
        padding: 110px 0 100px;
        overflow: hidden;
    }
    .hero::before {
        content: '';
        position: absolute;
        top: -80px;
        right: -80px;
        width: 320px;
        height: 320px;
        border-radius: 50%;
        background: radial-gradient(circle, rgba(46, 107, 255, 0.2), transparent 65%);
        pointer-events: none;
    }
    .hero::after {
        content: '';
        position: absolute;
        bottom: -40px;
        left: 10%;
        width: 200px;
        height: 200px;
        border-radius: 50%;
        background: radial-gradient(circle, rgba(69, 230, 255, 0.1), transparent 60%);
        pointer-events: none;
    }
    .hero .container-custom {
        position: relative;
        z-index: 2;
        display: flex;
        align-items: center;
        gap: 48px;
    }
    .hero-left {
        flex: 1.1;
        min-width: 0;
    }
    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: rgba(69, 230, 255, 0.1);
        border: 1px solid rgba(69, 230, 255, 0.25);
        color: var(--accent-cyan);
        font-size: 12px;
        font-weight: 600;
        padding: 4px 12px;
        border-radius: 999px;
        margin-bottom: 20px;
        letter-spacing: 0.5px;
    }
    .hero-badge i {
        font-size: 11px;
    }
    .hero-left h1 {
        font-size: clamp(30px, 6vw, 42px);
        font-weight: 700;
        line-height: 1.25;
        color: var(--text-primary);
        margin-bottom: 18px;
        letter-spacing: 0.5px;
    }
    .hero-left h1 span {
        background: linear-gradient(90deg, var(--accent-cyan), var(--brand-blue));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .hero-sub {
        font-size: 16px;
        line-height: 1.8;
        color: var(--text-secondary);
        max-width: 540px;
        margin-bottom: 32px;
    }
    .hero-btns {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        align-items: center;
    }
    .btn-primary {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: linear-gradient(135deg, var(--brand-blue), var(--accent-cyan));
        color: #fff;
        border: none;
        border-radius: var(--radius-button);
        padding: 12px 30px;
        font-size: 15px;
        font-weight: 600;
        cursor: pointer;
        box-shadow: 0 0 18px rgba(46, 107, 255, 0.45);
        transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
    }
    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 0 28px rgba(46, 107, 255, 0.65);
        filter: brightness(1.08);
        color: #fff;
    }
    .btn-primary:active {
        transform: translateY(0);
        box-shadow: 0 0 12px rgba(46, 107, 255, 0.35);
    }
    .btn-secondary {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.18);
        color: var(--text-primary);
        border-radius: var(--radius-button);
        padding: 12px 26px;
        font-size: 15px;
        font-weight: 500;
        cursor: pointer;
        backdrop-filter: blur(10px);
        transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
    }
    .btn-secondary:hover {
        border-color: rgba(69, 230, 255, 0.55);
        background: rgba(69, 230, 255, 0.05);
        transform: translateY(-2px);
        color: var(--text-primary);
    }
    .hero-right {
        flex: 0.9;
        min-width: 0;
    }
    .hero-highlight-card {
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(69, 230, 255, 0.2);
        border-radius: var(--radius-card);
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        padding: 32px 28px;
        box-shadow: var(--shadow-card), inset 0 0 40px rgba(69, 230, 255, 0.03);
        position: relative;
    }
    .hero-highlight-card::before {
        content: '';
        position: absolute;
        top: -1px; left: 28px; right: 28px;
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(69, 230, 255, 0.6), transparent);
    }
    .hero-highlight-title {
        font-size: 18px;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 20px;
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .hero-highlight-title i {
        color: var(--accent-cyan);
        font-size: 16px;
    }
    .hero-highlight-list {
        display: flex;
        flex-direction: column;
        gap: 18px;
    }
    .hero-highlight-item {
        display: flex;
        gap: 12px;
        align-items: flex-start;
    }
    .hero-highlight-item .hh-icon {
        width: 36px;
        height: 36px;
        border-radius: 10px;
        background: rgba(46, 107, 255, 0.15);
        border: 1px solid rgba(46, 107, 255, 0.25);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--accent-cyan);
        font-size: 14px;
        flex-shrink: 0;
    }
    .hero-highlight-item .hh-text h4 {
        font-size: 14px;
        font-weight: 600;
        color: var(--text-primary);
        margin-bottom: 2px;
    }
    .hero-highlight-item .hh-text p {
        font-size: 12px;
        color: var(--text-muted);
        line-height: 1.6;
        margin: 0;
    }
    @media (max-width: 64em) {
        .hero .container-custom {
            flex-direction: column;
            gap: 32px;
        }
        .hero-left,
        .hero-right {
            flex: auto;
            width: 100%;
        }
        .hero {
            padding: 70px 0 60px;
        }
    }
    @media (max-width: 40em) {
        .hero {
            padding: 48px 0 48px;
        }
        .hero-btns {
            flex-direction: column;
            align-items: stretch;
        }
        .hero-btns .btn-primary,
        .hero-btns .btn-secondary {
            justify-content: center;
        }
    }

    /* ===== Feature Bands ===== */
    .feature-bands {
        background: var(--bg-base);
        position: relative;
    }
    .feature-bands .section-head {
        text-align: center;
        margin-bottom: 48px;
    }
    .feature-bands .section-head h2 {
        font-size: 30px;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 10px;
    }
    .feature-bands .section-head p {
        font-size: 14px;
        color: var(--text-muted);
        max-width: 560px;
        margin: 0 auto;
    }
    .feature-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 24px;
        margin-bottom: 24px;
    }
    .feature-row:last-child {
        margin-bottom: 0;
    }
    .feature-card {
        display: flex;
        gap: 18px;
        align-items: flex-start;
        background: var(--glass-bg);
        border: 1px solid var(--glass-border);
        border-radius: var(--radius-card);
        padding: 28px 26px;
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
    }
    .feature-card:hover {
        border-color: rgba(69, 230, 255, 0.4);
        box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35), 0 0 24px rgba(69, 230, 255, 0.06);
        transform: translateY(-2px);
    }
    .feature-card.highlight {
        border-color: rgba(69, 230, 255, 0.35);
        background: linear-gradient(135deg, rgba(69, 230, 255, 0.06), rgba(255, 255, 255, 0.03));
    }
    .feature-icon {
        width: 48px;
        height: 48px;
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        flex-shrink: 0;
        background: linear-gradient(135deg, rgba(46, 107, 255, 0.25), rgba(69, 230, 255, 0.12));
        border: 1px solid rgba(69, 230, 255, 0.2);
        color: var(--accent-cyan);
    }
    .feature-card.highlight .feature-icon {
        background: linear-gradient(135deg, var(--brand-blue), var(--accent-cyan));
        color: #fff;
        box-shadow: 0 0 18px rgba(46, 107, 255, 0.4);
    }
    .feature-text h3 {
        font-size: 17px;
        font-weight: 600;
        color: var(--text-primary);
        margin-bottom: 6px;
    }
    .feature-text p {
        font-size: 13.5px;
        line-height: 1.7;
        color: var(--text-secondary);
        margin: 0;
    }
    @media (max-width: 40em) {
        .feature-row {
            grid-template-columns: 1fr;
            gap: 16px;
        }
        .feature-card {
            padding: 22px 18px;
        }
    }

    /* ===== Image Wall ===== */
    .image-wall {
        background: var(--bg-secondary);
    }
    .image-wall .section-head {
        text-align: center;
        margin-bottom: 48px;
    }
    .image-wall .section-head h2 {
        font-size: 30px;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 10px;
    }
    .image-wall .section-head p {
        font-size: 14px;
        color: var(--text-muted);
        max-width: 540px;
        margin: 0 auto;
    }
    .mosaic-row {
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
        gap: 20px;
        margin-bottom: 20px;
    }
    .mosaic-row.reverse {
        grid-template-columns: 1fr 1fr 1fr;
    }
    .mosaic-item {
        position: relative;
        border-radius: var(--radius-image);
        overflow: hidden;
        aspect-ratio: 4 / 3;
        cursor: pointer;
    }
    .mosaic-item.large {
        grid-column: span 2;
        aspect-ratio: 8 / 5;
    }
    .mosaic-item img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        border-radius: 0;
        transition: transform 0.5s ease;
    }
    .mosaic-item:hover img {
        transform: scale(1.05);
    }
    .mosaic-overlay {
        position: absolute;
        left: 12px;
        right: 12px;
        bottom: 12px;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.12);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        border-radius: 10px;
        padding: 12px 16px;
        font-size: 13px;
        font-weight: 500;
        color: var(--text-primary);
        z-index: 2;
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .mosaic-overlay i {
        color: var(--accent-cyan);
        font-size: 12px;
    }
    @media (max-width: 64em) {
        .mosaic-row {
            grid-template-columns: 1fr 1fr;
        }
        .mosaic-row.reverse {
            grid-template-columns: 1fr 1fr;
        }
        .mosaic-item.large {
            grid-column: span 2;
        }
    }
    @media (max-width: 40em) {
        .mosaic-row,
        .mosaic-row.reverse {
            grid-template-columns: 1fr;
        }
        .mosaic-item.large {
            grid-column: span 1;
            aspect-ratio: 4 / 3;
        }
        .mosaic-overlay {
            font-size: 12px;
            padding: 8px 12px;
        }
    }

    /* ===== CTA Form Section ===== */
    .cta-section {
        position: relative;
        background:
            linear-gradient(135deg, rgba(10, 19, 36, 0.9), rgba(14, 28, 53, 0.85)),
            url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
    }
    .cta-card {
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(255, 255, 255, 0.12);
        border-radius: 20px;
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        padding: 56px 48px;
        max-width: 880px;
        margin: 0 auto;
        text-align: center;
        position: relative;
        overflow: hidden;
    }
    .cta-card::before {
        content: '';
        position: absolute;
        top: -80px;
        left: 50%;
        transform: translateX(-50%);
        width: 320px;
        height: 160px;
        background: radial-gradient(ellipse, rgba(46, 107, 255, 0.18), transparent 60%);
        pointer-events: none;
    }
    .cta-card h2 {
        font-size: 30px;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 12px;
    }
    .cta-card .cta-sub {
        font-size: 15px;
        color: var(--text-secondary);
        max-width: 480px;
        margin: 0 auto 36px;
        line-height: 1.7;
    }
    .cta-form {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 16px;
        text-align: left;
    }
    .form-field {
        display: flex;
        flex-direction: column;
        gap: 6px;
    }
    .form-field label {
        font-size: 12px;
        font-weight: 500;
        color: rgba(255, 255, 255, 0.6);
        letter-spacing: 0.3px;
    }
    .form-field input,
    .form-field textarea {
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.06);
        border-radius: var(--radius-button);
        padding: 12px 16px;
        color: var(--text-primary);
        font-size: 14px;
        width: 100%;
        transition: border-color 0.3s ease, box-shadow 0.3s ease;
    }
    .form-field input::placeholder,
    .form-field textarea::placeholder {
        color: var(--text-muted);
    }
    .form-field input:focus,
    .form-field textarea:focus {
        border-color: var(--accent-cyan);
        box-shadow: 0 0 12px rgba(69, 230, 255, 0.18), 0 0 0 2px rgba(69, 230, 255, 0.06);
    }
    .form-field.full {
        grid-column: span 2;
    }
    .form-field textarea {
        resize: vertical;
        min-height: 80px;
    }
    .cta-form .btn-primary {
        grid-column: span 2;
        justify-content: center;
        width: 100%;
        margin-top: 6px;
        font-size: 16px;
        padding: 14px 30px;
    }
    .cta-benefits {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
        margin-top: 28px;
    }
    .cta-benefit-tag {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 12px;
        color: var(--text-secondary);
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.09);
        border-radius: 999px;
        padding: 5px 14px;
    }
    .cta-benefit-tag i {
        color: var(--accent-amber);
        font-size: 11px;
    }
    @media (max-width: 40em) {
        .cta-card {
            padding: 36px 20px;
        }
        .cta-form {
            grid-template-columns: 1fr;
        }
        .form-field.full,
        .cta-form .btn-primary {
            grid-column: span 1;
        }
        .cta-card h2 {
            font-size: 24px;
        }
    }

    /* ===== FAQ Section ===== */
    .faq-section {
        background: var(--bg-base);
    }
    .faq-layout {
        display: grid;
        grid-template-columns: 0.9fr 1.6fr;
        gap: 48px;
        align-items: start;
    }
    .faq-side {
        position: sticky;
        top: 100px;
    }
    .faq-side h2 {
        font-size: 30px;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 12px;
    }
    .faq-side p {
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.7;
        max-width: 260px;
    }
    .faq-list {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }
    .faq-item {
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid var(--glass-border);
        border-radius: var(--radius-faq);
        overflow: hidden;
        transition: border-color 0.3s ease, box-shadow 0.3s ease;
    }
    .faq-item:hover {
        border-color: rgba(69, 230, 255, 0.3);
    }
    .faq-item.active {
        border-color: rgba(69, 230, 255, 0.4);
        box-shadow: 0 0 20px rgba(69, 230, 255, 0.05);
    }
    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding: 18px 22px;
        cursor: pointer;
        user-select: none;
    }
    .faq-question h3 {
        font-size: 15px;
        font-weight: 600;
        color: var(--text-primary);
        margin: 0;
        line-height: 1.5;
    }
    .faq-toggle {
        width: 28px;
        height: 28px;
        border-radius: 50%;
        background: rgba(69, 230, 255, 0.08);
        border: 1px solid rgba(69, 230, 255, 0.2);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--accent-cyan);
        font-size: 14px;
        flex-shrink: 0;
        transition: transform 0.3s ease, background 0.3s ease;
    }
    .faq-item.active .faq-toggle {
        transform: rotate(45deg);
        background: rgba(69, 230, 255, 0.18);
    }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease, padding 0.35s ease;
        padding: 0 22px;
    }
    .faq-item.active .faq-answer {
        max-height: 300px;
        padding: 0 22px 18px;
    }
    .faq-answer p {
        font-size: 13.5px;
        line-height: 1.75;
        color: var(--text-secondary);
        margin: 0;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding-top: 14px;
    }
    @media (max-width: 64em) {
        .faq-layout {
            grid-template-columns: 1fr;
            gap: 32px;
        }
        .faq-side {
            position: static;
        }
    }
    @media (max-width: 40em) {
        .faq-question {
            padding: 14px 16px;
        }
        .faq-answer {
            padding: 0 16px;
        }
        .faq-item.active .faq-answer {
            padding: 0 16px 14px;
        }
    }

    /* ===== News (CMS) Section ===== */
    .news-section {
        background: var(--bg-secondary);
    }
    .news-section .section-head {
        text-align: center;
        margin-bottom: 48px;
    }
    .news-section .section-head h2 {
        font-size: 30px;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 10px;
    }
    .news-section .section-head p {
        font-size: 14px;
        color: var(--text-muted);
    }
    .news-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .news-card {
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid var(--glass-border);
        border-radius: var(--radius-card);
        padding: 24px;
        display: flex;
        flex-direction: column;
        min-height: 240px;
        transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
    }
    .news-card:hover {
        border-color: rgba(69, 230, 255, 0.4);
        box-shadow: 0 12px 36px rgba(0, 0, 0, 0.25), 0 0 18px rgba(69, 230, 255, 0.04);
        transform: translateY(-3px);
    }
    .news-badge {
        display: inline-flex;
        align-items: center;
        align-self: flex-start;
        font-size: 11px;
        font-weight: 600;
        color: var(--accent-cyan);
        background: rgba(69, 230, 255, 0.08);
        border: 1px solid rgba(69, 230, 255, 0.2);
        padding: 3px 12px;
        border-radius: 999px;
        margin-bottom: 16px;
        letter-spacing: 0.5px;
    }
    .news-card-title {
        font-size: 18px;
        font-weight: 600;
        line-height: 1.45;
        color: var(--text-primary);
        margin-bottom: 10px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .news-card-title a {
        color: var(--text-primary);
        transition: color 0.25s ease;
    }
    .news-card-title a:hover {
        color: var(--accent-cyan);
    }
    .news-card-excerpt {
        font-size: 13px;
        line-height: 1.7;
        color: var(--text-secondary);
        margin-bottom: 16px;
        flex: 1;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .news-card-footer {
        display: flex;
        align-items: center;
        justify-content: space-between;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding-top: 14px;
    }
    .news-card-date {
        font-size: 12px;
        color: var(--text-muted);
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .news-card-date i {
        font-size: 11px;
    }
    .news-card-link {
        font-size: 13px;
        font-weight: 600;
        color: var(--accent-cyan);
        display: inline-flex;
        align-items: center;
        gap: 4px;
        transition: gap 0.25s ease;
    }
    .news-card-link:hover {
        gap: 8px;
    }
    .news-empty {
        grid-column: span 3;
        text-align: center;
        padding: 48px 24px;
        background: rgba(255, 255, 255, 0.03);
        border: 1px dashed rgba(255, 255, 255, 0.12);
        border-radius: var(--radius-card);
        color: var(--text-muted);
        font-size: 14px;
    }
    @media (max-width: 64em) {
        .news-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }
    @media (max-width: 40em) {
        .news-grid {
            grid-template-columns: 1fr;
        }
        .news-empty {
            grid-column: span 1;
        }
    }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--bg-deeper);
        border-top: 1px solid rgba(255, 255, 255, 0.05);
        padding: 64px 0 0;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.2fr 0.8fr 1fr;
        gap: 48px;
        padding-bottom: 48px;
    }
    .footer-brand .footer-logo {
        font-size: 22px;
        font-weight: 700;
        color: var(--text-primary);
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 16px;
    }
    .footer-brand .footer-logo .logo-mark {
        width: 34px;
        height: 34px;
        border-radius: 9px;
        background: linear-gradient(135deg, var(--brand-blue), var(--accent-cyan));
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-weight: 800;
        font-size: 13px;
    }
    .footer-brand p {
        font-size: 13px;
        line-height: 1.8;
        color: var(--text-muted);
        max-width: 300px;
        margin: 0;
    }
    .footer-col h4 {
        font-size: 15px;
        font-weight: 600;
        color: var(--text-primary);
        margin-bottom: 18px;
    }
    .footer-col ul {
        list-style: none;
        margin: 0;
    }
    .footer-col ul li {
        margin-bottom: 10px;
    }
    .footer-col ul li a {
        font-size: 13.5px;
        color: var(--text-secondary);
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: color 0.25s ease, padding-left 0.25s ease;
    }
    .footer-col ul li a i {
        font-size: 11px;
        color: var(--text-muted);
        transition: color 0.25s ease;
    }
    .footer-col ul li a:hover {
        color: var(--accent-cyan);
        padding-left: 4px;
    }
    .footer-col ul li a:hover i {
        color: var(--accent-cyan);
    }
    .footer-contact-list li {
        display: flex;
        gap: 10px;
        font-size: 13px;
        color: var(--text-secondary);
        line-height: 1.7;
    }
    .footer-contact-list li i {
        color: var(--accent-cyan);
        font-size: 12px;
        margin-top: 3px;
        flex-shrink: 0;
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.05);
        padding: 22px 0;
        text-align: center;
    }
    .footer-bottom p {
        font-size: 12px;
        color: var(--text-muted);
        margin: 0;
    }
    @media (max-width: 64em) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
        .footer-brand {
            grid-column: span 2;
        }
    }
    @media (max-width: 40em) {
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 32px;
        }
        .footer-brand {
            grid-column: span 1;
        }
        .site-footer {
            padding-top: 44px;
        }
    }

    /* ===== Misc Utilities ===== */
    .text-cyan {
        color: var(--accent-cyan);
    }
    .text-amber {
        color: var(--accent-amber);
    }
    .section-divider {
        height: 1px;
        border: none;
        background: linear-gradient(90deg, transparent, rgba(255,255,255,0.08), transparent);
        margin: 0;
    }
    .focus-outline:focus-visible {
        outline: 2px solid rgba(69, 230, 255, 0.6);
        outline-offset: 2px;
    }

/* roulang page: article */
:root {
    --bg-base: #0A1324;
    --bg-secondary: #0E1C35;
    --bg-deep: #071024;
    --bg-panel: rgba(255, 255, 255, 0.05);
    --border-glass: rgba(255, 255, 255, 0.12);
    --border-light: rgba(255, 255, 255, 0.08);
    --text-primary: rgba(255, 255, 255, 0.95);
    --text-secondary: rgba(255, 255, 255, 0.72);
    --text-muted: rgba(255, 255, 255, 0.5);
    --blue-brand: #2E6BFF;
    --cyan-highlight: #45E6FF;
    --amber-accent: #FFC857;
    --card-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
    --btn-glow: 0 0 18px rgba(46, 107, 255, 0.45);
    --radius-card: 16px;
    --radius-img: 12px;
    --radius-btn: 10px;
    --radius-cap: 999px;
    --radius-faq: 14px;
    --blur-lg: blur(18px);
    --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans SC", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-stack);
    background: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.8;
    font-size: 15px;
    overflow-x: hidden;
    position: relative;
}
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none;
    z-index: 0;
}
a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
img { max-width: 100%; height: auto; display: block; }
button, input, select, textarea { font-family: inherit; }
.container-custom { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Header / Nav ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 19, 36, 0.88);
    backdrop-filter: var(--blur-lg);
    border-bottom: 1px solid var(--border-light);
}
.header-inner { display: flex; align-items: center; gap: 20px; height: 72px; position: relative; z-index: 1; }
.brand-logo { display: flex; align-items: center; gap: 10px; min-width: 150px; flex-shrink: 0; }
.logo-mark {
    width: 36px; height: 36px; border-radius: 10px;
    background: linear-gradient(135deg, var(--blue-brand), var(--cyan-highlight));
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 18px; color: #fff;
    box-shadow: 0 0 18px rgba(46, 107, 255, 0.4);
}
.logo-text { font-size: 20px; font-weight: 700; color: var(--text-primary); letter-spacing: 0.5px; }
.header-search { flex: 1; max-width: 560px; margin: 0 auto; position: relative; }
.search-box { position: relative; }
.search-icon {
    position: absolute; left: 16px; top: 50%; transform: translateY(-50%);
    width: 16px; height: 16px; color: var(--text-muted); pointer-events: none; transition: color 0.3s ease;
}
.search-box input {
    width: 100%; height: 44px; padding: 0 20px 0 44px;
    border: 1px solid transparent; background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-cap); color: var(--text-primary);
    font-size: 14px; outline: none; transition: all 0.3s ease;
}
.search-box input::placeholder { color: rgba(255, 255, 255, 0.5); }
.search-box input:focus {
    border-color: rgba(69, 230, 255, 0.6);
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 0 0 3px rgba(69, 230, 255, 0.15);
}
.search-box input:focus ~ .search-icon,
.search-box:hover .search-icon { color: var(--cyan-highlight); }
.search-suggest {
    position: absolute; top: calc(100% + 8px); left: 0; right: 0;
    background: rgba(14, 28, 53, 0.97); border: 1px solid var(--border-glass);
    border-radius: 12px; padding: 8px; z-index: 60; opacity: 0; visibility: hidden;
    transform: translateY(-6px); transition: all 0.3s ease;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
    backdrop-filter: var(--blur-lg);
}
.search-box input:focus ~ .search-suggest { opacity: 1; visibility: visible; transform: translateY(0); }
.search-suggest a {
    display: block; padding: 8px 12px; border-radius: 8px;
    color: var(--text-secondary); font-size: 13px;
}
.search-suggest a:hover { background: rgba(255, 255, 255, 0.08); color: var(--cyan-highlight); }
.main-nav { display: flex; align-items: center; gap: 4px; margin-left: 8px; }
.main-nav a {
    padding: 8px 14px; border-radius: 8px; font-size: 14px;
    color: var(--text-secondary); font-weight: 500; position: relative; white-space: nowrap;
}
.main-nav a i { margin-right: 5px; font-size: 13px; }
.main-nav a:hover { color: var(--text-primary); background: rgba(255, 255, 255, 0.06); }
.main-nav a.active { color: var(--cyan-highlight); }
.main-nav a.active::after {
    content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
    width: 20px; height: 2px; border-radius: 2px;
    background: var(--cyan-highlight); box-shadow: 0 0 10px rgba(69, 230, 255, 0.6);
}
.mobile-toggle {
    display: none; width: 40px; height: 40px;
    border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 10px;
    background: rgba(255, 255, 255, 0.06); color: var(--text-primary);
    font-size: 16px; cursor: pointer; align-items: center; justify-content: center;
    transition: all 0.3s ease; flex-shrink: 0;
}
.mobile-toggle:hover { border-color: rgba(69, 230, 255, 0.5); color: var(--cyan-highlight); }
.mobile-menu {
    display: none; background: rgba(14, 28, 53, 0.98);
    border-top: 1px solid var(--border-light); padding: 0 24px;
}
.mobile-menu.open { display: block; }
.mobile-menu-inner { padding: 12px 0 20px; }
.mobile-menu-inner a {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 8px; border-radius: 8px;
    color: var(--text-secondary); font-size: 15px; border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.mobile-menu-inner a i { width: 20px; text-align: center; color: var(--text-muted); }
.mobile-menu-inner a:hover { color: var(--cyan-highlight); background: rgba(255, 255, 255, 0.04); }
.mobile-menu-inner a.active { color: var(--cyan-highlight); }

/* ===== Article Banner + Breadcrumb ===== */
.article-banner {
    position: relative; padding: 44px 0 28px;
    background: url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
    border-bottom: 1px solid var(--border-light);
}
.article-banner::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(10, 19, 36, 0.72), rgba(10, 19, 36, 0.96));
}
.article-banner .container-custom { position: relative; z-index: 1; }
.breadcrumb { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-muted); flex-wrap: wrap; }
.breadcrumb a { color: var(--text-secondary); display: inline-flex; align-items: center; gap: 6px; }
.breadcrumb a:hover { color: var(--cyan-highlight); }
.breadcrumb .separator { font-size: 12px; opacity: 0.5; }
.breadcrumb .current { color: var(--text-primary); font-weight: 500; max-width: 420px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ===== Article Main Layout ===== */
.article-main { padding: 48px 0 64px; position: relative; z-index: 1; }
.article-layout { align-items: flex-start; }
.article-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    padding: 36px 40px;
    backdrop-filter: var(--blur-lg);
    box-shadow: var(--card-shadow);
    margin-bottom: 32px;
}
.article-category {
    display: inline-block; padding: 4px 14px; border-radius: var(--radius-cap);
    background: rgba(69, 230, 255, 0.1); border: 1px solid rgba(69, 230, 255, 0.3);
    color: var(--cyan-highlight); font-size: 13px; font-weight: 500;
    letter-spacing: 0.5px; margin-bottom: 16px;
}
.article-title { font-size: clamp(26px, 4vw, 36px); line-height: 1.35; font-weight: 700; margin-bottom: 16px; color: var(--text-primary); }
.article-meta {
    display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
    padding-bottom: 18px; border-bottom: 1px solid var(--border-light);
    margin-bottom: 28px;
}
.article-meta span { font-size: 13px; color: var(--text-muted); display: inline-flex; align-items: center; gap: 6px; }
.article-meta i { font-size: 14px; color: rgba(69, 230, 255, 0.6); }
.article-hero { border-radius: var(--radius-img); overflow: hidden; margin-bottom: 32px; position: relative; }
.article-hero img { width: 100%; height: 240px; object-fit: cover; }
.article-hero::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(10, 19, 36, 0.35));
    pointer-events: none;
}
.article-content { font-size: 15.5px; color: rgba(255, 255, 255, 0.88); line-height: 1.8; }
.article-content h2 {
    font-size: 24px; font-weight: 700; margin: 40px 0 16px; color: var(--text-primary);
    padding-left: 14px; border-left: 3px solid var(--cyan-highlight);
}
.article-content h3 { font-size: 19px; font-weight: 600; margin: 32px 0 12px; color: var(--text-primary); }
.article-content p { margin-bottom: 18px; letter-spacing: 0.02em; }
.article-content ul, .article-content ol { margin: 0 0 20px 22px; padding: 0; }
.article-content li { margin-bottom: 8px; }
.article-content ul li::marker { color: var(--cyan-highlight); }
.article-content ol li::marker { color: var(--cyan-highlight); font-weight: 600; }
.article-content blockquote {
    border-left: 3px solid var(--blue-brand); background: rgba(46, 107, 255, 0.08);
    padding: 16px 20px; border-radius: 0 12px 12px 0; margin: 24px 0;
    color: var(--text-secondary); font-style: normal;
}
.article-content blockquote p { margin-bottom: 0; }
.article-content img { border-radius: var(--radius-img); margin: 16px 0; }
.article-content table { width: 100%; border-collapse: collapse; margin: 24px 0; }
.article-content th, .article-content td { padding: 10px 14px; border: 1px solid var(--border-light); text-align: left; }
.article-content th { background: rgba(255, 255, 255, 0.06); font-weight: 600; color: var(--text-primary); }
.article-content td { color: var(--text-secondary); }
.article-content a { color: var(--cyan-highlight); border-bottom: 1px solid rgba(69, 230, 255, 0.3); }
.article-content a:hover { border-bottom-color: var(--cyan-highlight); }

/* ===== Pager ===== */
.article-pager {
    display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
    margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--border-light);
}
.pager-item { flex: 1; min-width: 220px; }
.pager-label {
    display: flex; align-items: center; gap: 6px;
    font-size: 12px; color: var(--text-muted); margin-bottom: 6px; letter-spacing: 0.5px;
}
.pager-item a {
    display: flex; align-items: center; gap: 8px;
    background: rgba(255, 255, 255, 0.05); border: 1px solid var(--border-glass);
    border-radius: 10px; padding: 12px 16px; font-size: 14px; color: var(--text-secondary);
    transition: all 0.3s ease; line-height: 1.4;
}
.pager-item a:hover { border-color: rgba(69, 230, 255, 0.5); color: var(--cyan-highlight); transform: translateY(-2px); background: rgba(255, 255, 255, 0.08); }
.pager-item.next { text-align: right; }
.pager-item.next .pager-label { justify-content: flex-end; }
.article-back { text-align: center; margin-top: 24px; }
.article-back a {
    display: inline-flex; align-items: center; gap: 8px;
    color: var(--text-muted); font-size: 14px;
    padding: 8px 20px; border-radius: var(--radius-cap);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}
.article-back a:hover { color: var(--cyan-highlight); border-color: rgba(69, 230, 255, 0.4); }

/* ===== Sidebar ===== */
.article-sidebar { position: sticky; top: 92px; display: flex; flex-direction: column; gap: 24px; }
.sidebar-widget {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-card);
    padding: 24px;
    backdrop-filter: var(--blur-lg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.18);
}
.widget-title {
    font-size: 16px; font-weight: 600; color: var(--text-primary);
    margin-bottom: 18px; display: flex; align-items: center; gap: 8px;
}
.widget-title i { color: var(--cyan-highlight); }
.recommend-item { display: flex; gap: 14px; padding: 12px 0; border-bottom: 1px solid var(--border-light); transition: all 0.3s ease; }
.recommend-item:last-child { border-bottom: none; padding-bottom: 0; }
.recommend-item:hover .recommend-info h4 { color: var(--cyan-highlight); }
.recommend-thumb { width: 76px; height: 58px; border-radius: 8px; overflow: hidden; flex-shrink: 0; position: relative; background: rgba(255, 255, 255, 0.06); }
.recommend-thumb img { width: 100%; height: 100%; object-fit: cover; }
.recommend-info { flex: 1; min-width: 0; }
.recommend-info h4 {
    font-size: 14px; font-weight: 500; color: var(--text-secondary);
    line-height: 1.45; margin-bottom: 4px; max-height: 40px; overflow: hidden;
    transition: color 0.3s ease;
}
.recommend-date { font-size: 12px; color: var(--text-muted); }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud span {
    padding: 5px 14px; border-radius: var(--radius-cap);
    background: rgba(255, 255, 255, 0.06); border: 1px solid var(--border-light);
    font-size: 13px; color: var(--text-secondary); cursor: default; transition: all 0.3s ease;
}
.tag-cloud span:hover { border-color: rgba(69, 230, 255, 0.4); color: var(--cyan-highlight); background: rgba(69, 230, 255, 0.06); }

/* ===== Not Found ===== */
.not-found-card {
    background: rgba(255, 255, 255, 0.04); border: 1px solid var(--border-glass);
    border-radius: 20px; padding: 64px 40px; text-align: center;
    backdrop-filter: var(--blur-lg); box-shadow: var(--card-shadow);
}
.not-found-icon { font-size: 56px; color: rgba(255, 255, 255, 0.15); margin-bottom: 16px; }
.not-found-card h2 { font-size: 28px; margin-bottom: 10px; color: var(--text-primary); }
.not-found-card p { color: var(--text-muted); margin-bottom: 28px; font-size: 15px; }

/* ===== Buttons ===== */
.btn-primary {
    display: inline-flex; align-items: center; gap: 8px; justify-content: center;
    padding: 13px 32px; border-radius: var(--radius-btn);
    background: linear-gradient(135deg, var(--blue-brand), var(--cyan-highlight));
    color: #fff; font-weight: 600; font-size: 15px; border: none; cursor: pointer;
    box-shadow: var(--btn-glow); transition: all 0.3s ease;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 26px rgba(46, 107, 255, 0.6); color: #fff; }
.btn-primary:active { transform: translateY(0); box-shadow: 0 0 10px rgba(46, 107, 255, 0.4); }
.btn-secondary {
    display: inline-flex; align-items: center; gap: 8px; justify-content: center;
    padding: 13px 32px; border-radius: var(--radius-btn);
    background: transparent; border: 1px solid rgba(255, 255, 255, 0.25);
    color: var(--text-primary); font-weight: 500; font-size: 15px; cursor: pointer;
    transition: all 0.3s ease;
}
.btn-secondary:hover { border-color: rgba(69, 230, 255, 0.6); color: var(--cyan-highlight); background: rgba(69, 230, 255, 0.04); }

/* ===== CTA ===== */
.article-cta { padding: 24px 0 64px; position: relative; z-index: 1; }
.cta-inner {
    background: rgba(255, 255, 255, 0.04); border: 1px solid var(--border-glass);
    border-radius: 20px; padding: 48px; text-align: center;
    backdrop-filter: var(--blur-lg); box-shadow: var(--card-shadow);
    background-image: radial-gradient(circle at 20% 20%, rgba(46, 107, 255, 0.12), transparent 40%),
                      radial-gradient(circle at 80% 80%, rgba(69, 230, 255, 0.08), transparent 40%);
}
.cta-inner h2 { font-size: clamp(24px, 3vw, 30px); color: var(--text-primary); margin-bottom: 10px; font-weight: 700; }
.cta-inner p { color: var(--text-muted); margin-bottom: 28px; max-width: 560px; margin-left: auto; margin-right: auto; }

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-deep);
    border-top: 1px solid var(--border-light);
    padding: 64px 0 0; margin-top: 24px; position: relative; z-index: 1;
}
.footer-grid {
    display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 48px;
    padding-bottom: 40px; border-bottom: 1px solid var(--border-light);
}
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-logo .logo-mark { width: 34px; height: 34px; font-size: 17px; border-radius: 9px; }
.footer-logo span:last-child { font-size: 19px; font-weight: 700; color: var(--text-primary); letter-spacing: 0.5px; }
.footer-brand p { color: var(--text-muted); font-size: 14px; line-height: 1.7; max-width: 360px; }
.footer-col h4 { font-size: 16px; color: var(--text-primary); margin-bottom: 18px; font-weight: 600; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
    color: var(--text-muted); font-size: 14px;
    display: inline-flex; align-items: center; gap: 8px; transition: all 0.3s ease;
}
.footer-col ul a:hover { color: var(--cyan-highlight); padding-left: 4px; }
.footer-contact-list li {
    display: flex; align-items: flex-start; gap: 10px;
    color: var(--text-muted); font-size: 14px; margin-bottom: 14px; line-height: 1.6;
}
.footer-contact-list i { margin-top: 4px; color: var(--cyan-highlight); font-size: 13px; width: 18px; flex-shrink: 0; }
.footer-bottom { padding: 20px 0; text-align: center; color: rgba(255, 255, 255, 0.4); font-size: 13px; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .header-inner { gap: 12px; }
    .main-nav a { padding: 8px 10px; font-size: 13px; }
    .logo-text { font-size: 18px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
    .header-inner { flex-wrap: wrap; height: auto; padding: 12px 0; }
    .brand-logo { order: 1; min-width: 0; }
    .mobile-toggle { order: 2; margin-left: auto; display: flex; }
    .header-search { order: 3; flex-basis: 100%; max-width: none; margin-top: 10px; }
    .main-nav { display: none; }
    .article-main { padding: 32px 0 48px; }
    .article-card { padding: 24px 20px; border-radius: 16px; }
    .article-hero img { height: 180px; }
    .article-sidebar { position: static; margin-top: 24px; }
    .cta-inner { padding: 36px 24px; }
    .footer-grid { grid-template-columns: 1fr; }
    .breadcrumb .current { max-width: 200px; }
    .article-pager { flex-direction: column; }
    .pager-item { min-width: 100%; }
    .pager-item.next { text-align: left; }
    .pager-item.next .pager-label { justify-content: flex-start; }
}

@media (max-width: 520px) {
    .container-custom { padding: 0 16px; }
    .logo-text { font-size: 17px; }
    .logo-mark { width: 32px; height: 32px; font-size: 15px; }
    .article-card { padding: 20px 16px; }
    .article-title { font-size: 24px; }
    .article-meta { gap: 14px; }
    .article-hero img { height: 150px; }
    .article-content { font-size: 14.5px; }
    .cta-inner { padding: 28px 18px; }
    .cta-inner h2 { font-size: 22px; }
    .recommend-thumb { width: 66px; height: 52px; }
    .not-found-card { padding: 40px 20px; }
    .not-found-icon { font-size: 42px; }
}

/* roulang page: category1 */
/* ==========================================
           设计变量
           ========================================== */
        :root {
            --bg-base: #0A1324;
            --bg-deep: #060D1A;
            --bg-secondary: #0E1C35;
            --primary-blue: #2E6BFF;
            --accent-cyan: #45E6FF;
            --accent-amber: #FFC857;
            --text-high: rgba(255, 255, 255, 0.95);
            --text-mid: rgba(255, 255, 255, 0.72);
            --text-low: rgba(255, 255, 255, 0.5);
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(255, 255, 255, 0.12);
            --radius-card: 16px;
            --radius-img: 12px;
            --radius-btn: 10px;
            --radius-search: 999px;
            --radius-faq: 14px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.25);
            --shadow-primary: 0 0 18px rgba(46, 107, 255, 0.45);
            --transition: 0.3s ease;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans SC", "Helvetica Neue", Arial, sans-serif;
        }

        /* ========== Reset / Base ========== */
        *, *::before, *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-family);
            background: var(--bg-base);
            color: var(--text-high);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
        }
        a:hover {
            color: #fff;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul, ol {
            margin: 0;
            padding: 0;
        }
        h1, h2, h3, h4, h5, h6 {
            margin: 0;
            font-weight: 700;
            line-height: 1.3;
        }

        /* ========== 容器 ========== */
        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
            text-decoration: none;
            line-height: 1.4;
            letter-spacing: 0.2px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary-blue), var(--accent-cyan));
            color: #fff;
            box-shadow: var(--shadow-primary);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(69, 230, 255, 0.55);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0) scale(0.98);
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.28);
            color: #fff;
            backdrop-filter: blur(10px);
        }
        .btn-secondary:hover {
            border-color: var(--accent-cyan);
            background: rgba(69, 230, 255, 0.08);
            color: #fff;
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }
        .btn-sm {
            padding: 6px 16px;
            font-size: 13px;
            border-radius: 8px;
        }
        .btn-block {
            width: 100%;
        }
        .btn:focus-visible {
            outline: 2px solid rgba(69, 230, 255, 0.6);
            outline-offset: 2px;
        }

        /* ========== 顶部倒计时条 ========== */
        .topbar {
            background: linear-gradient(90deg, rgba(14, 28, 53, 0.95), rgba(10, 19, 36, 0.9));
            border-bottom: 1px solid rgba(69, 230, 255, 0.16);
            padding: 6px 0;
        }
        .topbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: 48px;
        }
        .topbar-label {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-mid);
            font-size: 13px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .topbar-label i {
            color: var(--accent-cyan);
        }
        .countdown-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }
        .cd-unit {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 8px;
            padding: 2px 8px;
            display: flex;
            align-items: center;
            gap: 4px;
            min-width: 48px;
            justify-content: center;
            backdrop-filter: blur(12px);
        }
        .cd-unit b {
            font-family: "DIN Alternate", "Roboto Mono", "SFMono-Regular", monospace;
            font-weight: 600;
            font-size: 16px;
            color: var(--accent-cyan);
            text-shadow: 0 0 10px rgba(69, 230, 255, 0.4);
            letter-spacing: 1px;
        }
        .cd-unit em {
            font-style: normal;
            font-size: 12px;
            color: var(--text-mid);
        }

        /* ========== 导航 Header ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 19, 36, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 14px 16px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            flex-shrink: 0;
            text-decoration: none;
            letter-spacing: 0.5px;
        }
        .brand-logo:hover {
            color: #fff;
        }
        .logo-mark {
            width: 34px;
            height: 34px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary-blue), var(--accent-cyan));
            border-radius: 9px;
            color: #fff;
            font-size: 17px;
            font-weight: 700;
            box-shadow: 0 0 14px rgba(46, 107, 255, 0.45);
        }

        /* ========== 搜索框 ========== */
        .search-box {
            flex: 1;
            max-width: 520px;
            position: relative;
            margin: 0 8px;
        }
        .search-box input {
            width: 100%;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-search);
            color: #fff;
            padding: 10px 18px 10px 44px;
            font-size: 14px;
            transition: var(--transition);
            outline: none;
            -webkit-appearance: none;
            appearance: none;
        }
        .search-box input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }
        .search-box input:focus {
            border-color: rgba(69, 230, 255, 0.6);
            box-shadow: 0 0 0 3px rgba(69, 230, 255, 0.15);
            background: rgba(255, 255, 255, 0.1);
        }
        .search-box .search-svg {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            width: 16px;
            height: 16px;
            color: var(--text-mid);
            pointer-events: none;
            transition: color var(--transition);
        }
        .search-box:focus-within .search-svg {
            color: var(--accent-cyan);
        }

        /* ========== 主导航 ========== */
        .main-nav {
            display: flex;
            align-items: center;
            gap: 2px;
            flex-shrink: 0;
        }
        .main-nav a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-mid);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 8px;
            position: relative;
            white-space: nowrap;
            transition: var(--transition);
        }
        .main-nav a i {
            font-size: 14px;
        }
        .main-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .main-nav a.active {
            color: var(--accent-cyan);
        }
        .main-nav a.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(69, 230, 255, 0.8);
        }
        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 8px;
            color: #fff;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 18px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            border-color: rgba(69, 230, 255, 0.4);
            color: var(--accent-cyan);
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-wrap {
            padding: 16px 0;
            background: var(--bg-deep);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .breadcrumb-wrap .container-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-mid);
        }
        .breadcrumb-wrap a {
            color: var(--text-mid);
            text-decoration: none;
        }
        .breadcrumb-wrap a:hover {
            color: var(--accent-cyan);
        }
        .breadcrumb-wrap .breadcrumb-current {
            color: var(--text-high);
            font-weight: 500;
        }
        .breadcrumb-wrap i {
            font-size: 10px;
            color: var(--text-low);
        }

        /* ========== 分类页 Hero ========== */
        .category-hero {
            position: relative;
            padding: 80px 0 76px;
            overflow: hidden;
            background: var(--bg-base);
        }
        .category-hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.3;
            z-index: 1;
        }
        .category-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            z-index: 1;
            background: linear-gradient(120deg, rgba(10, 19, 36, 0.97) 0%, rgba(10, 19, 36, 0.82) 50%, rgba(46, 107, 255, 0.18) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            color: var(--accent-cyan);
            margin-bottom: 20px;
        }
        .hero-tag i {
            font-size: 12px;
        }
        .category-hero h1 {
            font-size: clamp(30px, 6vw, 42px);
            font-weight: 700;
            line-height: 1.2;
            margin: 0 0 18px;
            max-width: 720px;
            letter-spacing: -0.3px;
        }
        .category-hero .hero-description {
            font-size: 16px;
            color: var(--text-mid);
            max-width: 640px;
            margin: 0 0 32px;
            line-height: 1.75;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ========== 板块标题 ========== */
        .section-head {
            margin-bottom: 40px;
        }
        .section-head.center {
            text-align: center;
        }
        .section-overline {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-cyan);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 10px;
        }
        .section-head h2 {
            font-size: clamp(26px, 4vw, 32px);
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.25;
        }
        .section-head p {
            font-size: 15px;
            color: var(--text-mid);
            line-height: 1.7;
            max-width: 580px;
        }
        .section-head.center p {
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== 图文条目列表 ========== */
        .service-list-section {
            padding: 96px 0;
            background: var(--bg-base);
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
            background-size: 40px 40px;
            scroll-margin-top: 80px;
        }
        .entries-list {
            display: flex;
            flex-direction: column;
            gap: 48px;
            margin-top: 8px;
        }
        .entry-item {
            display: grid;
            grid-template-columns: 420px 1fr;
            align-items: center;
            gap: 40px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 24px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
        }
        .entry-item:hover {
            border-color: rgba(69, 230, 255, 0.4);
            box-shadow: 0 14px 44px rgba(0, 0, 0, 0.32);
            transform: translateY(-3px);
        }
        .entry-image {
            border-radius: var(--radius-img);
            overflow: hidden;
            aspect-ratio: 4/3;
            background: var(--bg-secondary);
            position: relative;
        }
        .entry-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .entry-item:hover .entry-image img {
            transform: scale(1.05);
        }
        .entry-body {
            padding: 8px 4px;
        }
        .entry-badge {
            display: inline-block;
            background: rgba(46, 107, 255, 0.16);
            color: var(--accent-cyan);
            border: 1px solid rgba(69, 230, 255, 0.22);
            border-radius: 999px;
            padding: 4px 13px;
            font-size: 12px;
            font-weight: 500;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .entry-body h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.2px;
        }
        .entry-body p {
            color: var(--text-mid);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 480px;
        }
        .entry-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent-cyan);
            font-size: 14px;
            font-weight: 600;
            transition: color var(--transition);
        }
        .entry-link i {
            transition: transform var(--transition);
        }
        .entry-link:hover {
            color: #fff;
        }
        .entry-link:hover i {
            transform: translateX(4px);
        }

        /* ========== 流程 ========== */
        .process-section {
            padding: 96px 0;
            background: var(--bg-secondary);
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            margin-top: 16px;
        }
        .process-card {
            padding: 28px 22px;
            border-radius: var(--radius-card);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }
        .process-card:hover {
            border-color: rgba(69, 230, 255, 0.35);
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-2px);
        }
        .process-num {
            display: block;
            font-size: 32px;
            font-weight: 700;
            line-height: 1;
            background: linear-gradient(135deg, var(--primary-blue), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 14px;
        }
        .process-card h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .process-card p {
            font-size: 13px;
            color: var(--text-mid);
            line-height: 1.6;
            margin: 0;
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 96px 0;
            background: var(--bg-base);
        }
        .faq-layout {
            display: grid;
            grid-template-columns: 360px 1fr;
            gap: 48px;
            align-items: start;
        }
        .faq-heading .section-overline {
            margin-bottom: 10px;
        }
        .faq-heading h2 {
            font-size: clamp(26px, 4vw, 32px);
            margin-bottom: 12px;
        }
        .faq-heading p {
            color: var(--text-mid);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-faq);
            overflow: hidden;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.2);
        }
        .faq-item.active {
            border-color: rgba(69, 230, 255, 0.35);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            background: transparent;
            border: none;
            color: var(--text-high);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            text-align: left;
            transition: var(--transition);
            line-height: 1.4;
        }
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(69, 230, 255, 0.1);
            color: var(--accent-cyan);
            font-size: 18px;
            font-weight: 400;
            flex-shrink: 0;
            transition: transform var(--transition), background var(--transition);
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: rgba(46, 107, 255, 0.2);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        .faq-answer-inner {
            padding: 14px 24px 18px;
            color: var(--text-mid);
            font-size: 14px;
            line-height: 1.7;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            padding: 96px 0;
            background: var(--bg-secondary);
            overflow: hidden;
            scroll-margin-top: 80px;
        }
        .cta-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            z-index: 1;
        }
        .cta-section::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(14, 28, 53, 0.9), rgba(10, 19, 36, 0.85));
            z-index: 1;
        }
        .cta-card {
            position: relative;
            z-index: 2;
            max-width: 760px;
            margin: 0 auto;
            text-align: center;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 20px;
            padding: 48px 40px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: var(--shadow-card);
        }
        .cta-card h2 {
            font-size: clamp(24px, 4vw, 30px);
            margin-bottom: 12px;
        }
        .cta-card > p {
            color: var(--text-mid);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 460px;
            margin: 0 auto;
        }
        .cta-form input,
        .cta-form textarea {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            padding: 13px 16px;
            color: #fff;
            font-size: 14px;
            transition: var(--transition);
            -webkit-appearance: none;
            appearance: none;
        }
        .cta-form textarea {
            min-height: 90px;
            resize: vertical;
        }
        .cta-form input::placeholder,
        .cta-form textarea::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }
        .cta-form input:focus,
        .cta-form textarea:focus {
            outline: none;
            border-color: rgba(69, 230, 255, 0.5);
            box-shadow: 0 0 0 3px rgba(69, 230, 255, 0.15);
            background: rgba(255, 255, 255, 0.08);
        }
        .cta-note {
            margin-top: 18px;
            font-size: 13px;
            color: var(--text-low);
            line-height: 1.6;
        }
        .cta-form-success {
            color: var(--accent-cyan);
            font-size: 14px;
            margin-top: 4px;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-deep);
            padding: 64px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-logo span {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }
        .footer-brand p {
            color: var(--text-mid);
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-high);
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col li {
            margin-bottom: 10px;
        }
        .footer-col a,
        .footer-contact-list li {
            color: var(--text-mid);
            font-size: 14px;
            text-decoration: none;
        }
        .footer-col a:hover {
            color: var(--accent-cyan);
        }
        .footer-col a i {
            font-size: 10px;
            margin-right: 6px;
            color: var(--accent-cyan);
        }
        .footer-contact-list li {
            display: flex;
            gap: 8px;
            align-items: flex-start;
            line-height: 1.6;
        }
        .footer-contact-list i {
            color: var(--accent-cyan);
            margin-top: 4px;
            font-size: 14px;
            flex-shrink: 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            text-align: center;
        }
        .footer-bottom p {
            margin: 0;
            color: var(--text-low);
            font-size: 13px;
        }

        /* ========== 通用玻璃卡 ========== */
        .glass-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-card);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 75em) {
            .entry-item {
                grid-template-columns: 350px 1fr;
                gap: 32px;
            }
            .process-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .faq-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1.2fr 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 64em) {
            .header-inner {
                flex-wrap: wrap;
                padding: 10px 16px;
            }
            .search-box {
                order: 3;
                flex-basis: 100%;
                max-width: 100%;
                margin: 8px 0 0;
            }
            .entry-item {
                grid-template-columns: 300px 1fr;
                gap: 28px;
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 40em) {
            .topbar-inner {
                flex-direction: column;
                justify-content: center;
                gap: 4px;
                padding: 8px 0;
            }
            .topbar-label {
                white-space: normal;
                text-align: center;
            }
            .countdown-wrap {
                justify-content: center;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(10, 19, 36, 0.97);
                backdrop-filter: blur(18px);
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                gap: 4px;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                box-shadow: 0 20px 30px rgba(0, 0, 0, 0.4);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 14px 16px;
            }
            .main-nav a.active::after {
                width: 28px;
            }
            .nav-toggle {
                display: flex;
            }
            .brand-logo {
                font-size: 18px;
            }
            .header-inner {
                gap: 8px;
            }
            .category-hero {
                padding: 56px 0 52px;
            }
            .service-list-section,
            .process-section,
            .faq-section,
            .cta-section {
                padding: 56px 0;
            }
            .entry-item {
                grid-template-columns: 1fr;
                padding: 16px;
                gap: 20px;
            }
            .entry-body h3 {
                font-size: 21px;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .site-footer {
                padding-top: 48px;
            }
            .cta-card {
                padding: 32px 20px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .cd-unit {
                min-width: 42px;
            }
            .cd-unit b {
                font-size: 14px;
            }
            .cd-unit em {
                font-size: 11px;
            }
            .topbar-label {
                font-size: 12px;
            }
        }

/* roulang page: category2 */
:root{
  --bg-base:#0A1324;
  --bg-secondary:#0E1C35;
  --bg-elevated:#111F3D;
  --brand-blue:#2E6BFF;
  --accent-cyan:#45E6FF;
  --accent-amber:#FFC857;
  --glass-bg:rgba(255,255,255,0.05);
  --glass-border:rgba(255,255,255,0.12);
  --text-primary:rgba(255,255,255,0.95);
  --text-secondary:rgba(255,255,255,0.72);
  --text-muted:rgba(255,255,255,0.50);
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-search:999px;
  --radius-faq:14px;
  --shadow-card:0 8px 30px rgba(0,0,0,0.25);
  --shadow-glow:0 0 18px rgba(46,107,255,0.45);
  --space-section:96px;
  --space-section-mobile:56px;
  --font-stack:"PingFang SC","Microsoft YaHei","Noto Sans SC","HarmonyOS Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font-stack);
  background:var(--bg-base);
  color:var(--text-primary);
  line-height:1.7;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;transition:color .25s ease;}
img{max-width:100%;display:block;}
ul,ol{list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;border:none;outline:none;background:none;}
.container-custom{max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:2;}
.section-pad{padding:var(--space-section) 0;}
.section-pad-sm{padding:56px 0;}
.bg-layer{position:relative;}
.bg-layer::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,0.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.025) 1px,transparent 1px);background-size:44px 44px;pointer-events:none;}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head .tag-label{display:inline-flex;align-items:center;gap:8px;color:var(--accent-cyan);font-size:13px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;background:rgba(69,230,255,0.1);border:1px solid rgba(69,230,255,0.25);padding:6px 16px;border-radius:999px;margin-bottom:14px;}
.section-head h2{font-size:clamp(28px,4vw,34px);font-weight:700;line-height:1.3;letter-spacing:-0.02em;color:var(--text-primary);}
.section-head p{color:var(--text-secondary);font-size:15px;margin-top:12px;line-height:1.8;}

/* 主按钮 */
.btn-primary{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,#2E6BFF 0%,#45E6FF 100%);color:#fff;font-weight:600;font-size:15px;padding:14px 32px;border-radius:var(--radius-btn);box-shadow:var(--shadow-glow);transition:transform .25s ease,box-shadow .25s ease,filter .25s ease;cursor:pointer;border:none;}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 28px rgba(69,230,255,0.5);filter:brightness(1.05);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(46,107,255,0.4);}
.btn-secondary{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,0.06);color:#fff;font-weight:500;font-size:15px;padding:14px 32px;border-radius:var(--radius-btn);border:1px solid var(--glass-border);transition:border-color .25s ease,background .25s ease,transform .25s ease;cursor:pointer;}
.btn-secondary:hover{border-color:rgba(69,230,255,0.6);background:rgba(255,255,255,0.1);transform:translateY(-2px);}
.btn-secondary:active{transform:translateY(0);}
.btn-text-link{display:inline-flex;align-items:center;gap:6px;color:var(--accent-cyan);font-size:14px;font-weight:500;transition:gap .25s ease,color .25s ease;}
.btn-text-link:hover{gap:10px;color:#7FEFFF;}

/* ========== 导航 ========== */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(10,19,36,0.85);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid rgba(255,255,255,0.08);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px;}
.logo-wrap{display:flex;align-items:center;gap:10px;flex-shrink:0;min-width:150px;}
.logo-mark{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,#2E6BFF,#45E6FF);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;color:#fff;box-shadow:0 0 14px rgba(46,107,255,0.4);flex-shrink:0;}
.logo-text{font-size:18px;font-weight:700;letter-spacing:0.01em;color:var(--text-primary);white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;}
.main-nav a{display:inline-flex;align-items:center;gap:7px;padding:10px 16px;border-radius:10px;font-size:14px;font-weight:500;color:var(--text-secondary);transition:background .25s ease,color .25s ease;}
.main-nav a i{font-size:14px;color:var(--text-muted);transition:color .25s ease;}
.main-nav a:hover{background:rgba(255,255,255,0.06);color:var(--text-primary);}
.main-nav a.active{background:rgba(69,230,255,0.1);color:var(--accent-cyan);}
.main-nav a.active i{color:var(--accent-cyan);}
.main-nav a.active::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:18px;height:2px;border-radius:2px;background:var(--accent-cyan);box-shadow:0 0 8px rgba(69,230,255,0.7);}
.nav-search{flex:1;max-width:420px;min-width:160px;margin:0 8px;position:relative;}
.nav-search form{display:flex;align-items:center;background:rgba(255,255,255,0.07);border:1px solid transparent;border-radius:var(--radius-search);padding:0 6px 0 16px;height:42px;transition:border-color .3s ease,box-shadow .3s ease,background .3s ease;}
.nav-search form:hover{background:rgba(255,255,255,0.09);}
.nav-search form:focus-within{border-color:rgba(69,230,255,0.5);box-shadow:0 0 0 3px rgba(69,230,255,0.15);background:rgba(255,255,255,0.1);}
.nav-search input{flex:1;background:transparent;color:var(--text-primary);font-size:14px;padding:8px 0;}
.nav-search input::placeholder{color:var(--text-muted);}
.nav-search button{width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--text-secondary);cursor:pointer;transition:color .25s ease,background .25s ease;}
.nav-search button:hover{color:var(--accent-cyan);background:rgba(69,230,255,0.1);}
.nav-search button i{font-size:15px;}
.hamburger{display:none;width:42px;height:42px;border-radius:10px;background:rgba(255,255,255,0.06);border:1px solid var(--glass-border);align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:background .25s ease,border-color .25s ease;}
.hamburger:hover{background:rgba(255,255,255,0.1);border-color:rgba(69,230,255,0.4);}
.hamburger i{font-size:18px;color:var(--text-primary);}

/* ========== Hero 横幅 ========== */
.page-banner{position:relative;min-height:420px;display:flex;align-items:center;padding:80px 0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;}
.page-banner::before{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,19,36,0.92) 0%,rgba(10,19,36,0.72) 50%,rgba(10,19,36,0.35) 100%);}
.page-banner::after{content:'';position:absolute;inset:0;background:rgba(10,19,36,0.3);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);}
.banner-content{position:relative;z-index:5;max-width:760px;}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-muted);margin-bottom:20px;}
.breadcrumb a{color:var(--text-secondary);transition:color .25s ease;}
.breadcrumb a:hover{color:var(--accent-cyan);}
.breadcrumb i{font-size:11px;opacity:0.6;}
.banner-content h1{font-size:clamp(30px,6vw,42px);font-weight:700;line-height:1.3;letter-spacing:-0.02em;color:var(--text-primary);margin-bottom:18px;}
.banner-content h1 span{background:linear-gradient(135deg,#45E6FF,#2E6BFF);-webkit-background-clip:text;-webkit-text-fill-color:transparent;}
.banner-content .subtitle{font-size:16px;line-height:1.9;color:var(--text-secondary);max-width:620px;margin-bottom:28px;}
.banner-actions{display:flex;align-items:center;flex-wrap:wrap;gap:16px;}

/* ========== 方案概览 ========== */
.overview-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px;}
.overview-item{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-card);padding:28px 24px;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);transition:border-color .3s ease,transform .3s ease,box-shadow .3s ease;position:relative;overflow:hidden;}
.overview-item::after{content:'';position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,transparent,rgba(69,230,255,0.6),transparent);opacity:0;transition:opacity .3s ease;}
.overview-item:hover{border-color:rgba(69,230,255,0.4);transform:translateY(-4px);box-shadow:var(--shadow-card);}
.overview-item:hover::after{opacity:1;}
.overview-item .icon-box{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,rgba(46,107,255,0.25),rgba(69,230,255,0.15));display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--accent-cyan);margin-bottom:18px;border:1px solid rgba(69,230,255,0.2);}
.overview-item h3{font-size:17px;font-weight:600;color:var(--text-primary);margin-bottom:10px;}
.overview-item p{font-size:13px;color:var(--text-secondary);line-height:1.75;}

/* ========== 视觉索引墙 ========== */
.gallery-wall{padding:var(--space-section) 0;background:var(--bg-secondary);position:relative;}
.gallery-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:20px;}
.gallery-card{position:relative;border-radius:var(--radius-card);overflow:hidden;height:260px;border:1px solid var(--glass-border);transition:transform .35s ease,box-shadow .35s ease,border-color .35s ease;cursor:pointer;}
.gallery-card:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(0,0,0,0.35);border-color:rgba(69,230,255,0.4);}
.gallery-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.gallery-card:hover img{transform:scale(1.05);}
.gallery-card::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(10,19,36,0.75) 100%);}
.gallery-card .card-label{position:absolute;z-index:2;left:16px;right:16px;bottom:14px;display:flex;align-items:center;justify-content:space-between;gap:8px;}
.gallery-card .card-label span{font-size:16px;font-weight:600;color:#fff;text-shadow:0 2px 8px rgba(0,0,0,0.4);}
.gallery-card .card-label i{color:var(--accent-cyan);font-size:16px;opacity:0;transform:translateX(-6px);transition:opacity .3s ease,transform .3s ease;}
.gallery-card:hover .card-label i{opacity:1;transform:translateX(0);}
.g-card-1{grid-column:span 3;}
.g-card-2{grid-column:span 3;}
.g-card-3{grid-column:span 2;}
.g-card-4{grid-column:span 2;}
.g-card-5{grid-column:span 2;}
.g-card-6{grid-column:span 3;}
.g-card-7{grid-column:span 3;}
.gallery-note{margin-top:28px;text-align:right;}
.gallery-note a{display:inline-flex;align-items:center;gap:8px;color:var(--text-secondary);font-size:14px;transition:color .3s ease;}
.gallery-note a:hover{color:var(--accent-cyan);}

/* ========== 优势/信任板块 ========== */
.trust-band{padding:var(--space-section) 0;background:var(--bg-base);position:relative;}
.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.trust-card{background:rgba(255,255,255,0.04);border:1px solid var(--glass-border);border-radius:var(--radius-card);padding:32px;transition:border-color .3s ease,transform .3s ease,background .3s ease;border-top:3px solid rgba(69,230,255,0.5);}
.trust-card:hover{border-color:rgba(69,230,255,0.35);background:rgba(255,255,255,0.06);transform:translateY(-3px);}
.trust-card .trust-num{display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:36px;padding:0 10px;background:rgba(69,230,255,0.12);color:var(--accent-cyan);font-size:14px;font-weight:700;border-radius:999px;margin-bottom:16px;border:1px solid rgba(69,230,255,0.25);}
.trust-card h3{font-size:18px;font-weight:600;color:var(--text-primary);margin-bottom:10px;}
.trust-card p{font-size:14px;color:var(--text-secondary);line-height:1.8;}

/* ========== 流程 ========== */
.process-section{padding:var(--space-section) 0;background:var(--bg-secondary);}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.process-step{position:relative;text-align:center;padding:0 8px;}
.process-step::after{content:'';position:absolute;top:32px;right:-12px;width:24px;height:1px;background:linear-gradient(90deg,rgba(69,230,255,0.5),transparent);}
.process-step:last-child::after{display:none;}
.step-number{width:64px;height:64px;margin:0 auto 20px;border-radius:18px;background:linear-gradient(135deg,rgba(46,107,255,0.2),rgba(69,230,255,0.15));border:1px solid rgba(69,230,255,0.25);display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;color:var(--accent-cyan);box-shadow:0 0 20px rgba(46,107,255,0.15);}
.process-step h3{font-size:16px;font-weight:600;color:var(--text-primary);margin-bottom:10px;}
.process-step p{font-size:13px;color:var(--text-secondary);line-height:1.7;}

/* ========== FAQ ========== */
.faq-section{padding:var(--space-section) 0;background:var(--bg-base);}
.faq-layout{display:grid;grid-template-columns:1fr 1.4fr;gap:48px;align-items:start;}
.faq-side{position:sticky;top:120px;}
.faq-side .tag-label{display:inline-flex;align-items:center;gap:8px;color:var(--accent-cyan);font-size:13px;font-weight:600;background:rgba(69,230,255,0.1);border:1px solid rgba(69,230,255,0.25);padding:6px 16px;border-radius:999px;margin-bottom:14px;}
.faq-side h2{font-size:clamp(26px,4vw,32px);font-weight:700;line-height:1.4;letter-spacing:-0.02em;color:var(--text-primary);margin-bottom:16px;}
.faq-side p{color:var(--text-secondary);font-size:14px;line-height:1.8;}
.faq-list{display:flex;flex-direction:column;gap:16px;}
.faq-item{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-faq);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);overflow:hidden;transition:border-color .3s ease,box-shadow .3s ease;}
.faq-item:hover{border-color:rgba(69,230,255,0.35);}
.faq-item.active{border-color:rgba(69,230,255,0.4);box-shadow:0 4px 20px rgba(46,107,255,0.15);}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 24px;font-size:15px;font-weight:500;color:var(--text-primary);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .faq-icon{width:30px;height:30px;border-radius:50%;background:rgba(69,230,255,0.1);flex-shrink:0;display:flex;align-items:center;justify-content:center;transition:background .3s ease,transform .3s ease;}
.faq-item summary .faq-icon i{color:var(--accent-cyan);font-size:13px;transition:transform .3s ease;}
.faq-item[open] summary .faq-icon{background:rgba(69,230,255,0.2);}
.faq-item[open] summary .faq-icon i{transform:rotate(45deg);}
.faq-item .faq-body{padding:0 24px 22px;color:var(--text-secondary);font-size:14px;line-height:1.8;animation:faqFade .35s ease;}
@keyframes faqFade{from{opacity:0;transform:translateY(-6px);}to{opacity:1;transform:translateY(0);}}

/* ========== CTA ========== */
.cta-band{padding:80px 0;background:var(--bg-secondary);position:relative;overflow:hidden;}
.cta-band::before{content:'';position:absolute;top:-60%;left:20%;width:400px;height:400px;border-radius:50%;background:rgba(46,107,255,0.12);filter:blur(60px);}
.cta-band::after{content:'';position:absolute;bottom:-50%;right:10%;width:300px;height:300px;border-radius:50%;background:rgba(69,230,255,0.08);filter:blur(50px);}
.cta-inner{max-width:800px;margin:0 auto;text-align:center;position:relative;z-index:2;}
.cta-inner h2{font-size:clamp(26px,4vw,32px);font-weight:700;color:var(--text-primary);margin-bottom:14px;line-height:1.4;}
.cta-inner p{color:var(--text-secondary);font-size:15px;line-height:1.8;margin-bottom:28px;}
.cta-actions{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap;}

/* ========== 页脚 ========== */
.site-footer{background:#081020;border-top:1px solid rgba(255,255,255,0.06);padding:64px 0 0;position:relative;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:48px;padding-bottom:48px;}
.footer-brand .footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .footer-logo .logo-mark{width:34px;height:34px;border-radius:10px;}
.footer-brand .footer-logo span{font-size:18px;font-weight:700;}
.footer-brand p{color:var(--text-muted);font-size:14px;line-height:1.9;max-width:340px;}
.footer-col h4{font-size:16px;font-weight:600;color:var(--text-primary);margin-bottom:18px;position:relative;padding-bottom:10px;}
.footer-col h4::after{content:'';position:absolute;left:0;bottom:0;width:28px;height:2px;background:linear-gradient(90deg,var(--accent-cyan),transparent);border-radius:2px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{color:var(--text-muted);font-size:14px;display:inline-flex;align-items:center;gap:6px;transition:color .25s ease,padding-left .25s ease;}
.footer-col ul li a:hover{color:var(--accent-cyan);padding-left:4px;}
.footer-col ul li a i{font-size:11px;color:var(--text-muted);}
.footer-col ul li a:hover i{color:var(--accent-cyan);}
.footer-contact-list li{display:flex;gap:10px;color:var(--text-muted);font-size:13px;line-height:1.7;align-items:flex-start;margin-bottom:14px;}
.footer-contact-list i{color:var(--accent-cyan);font-size:13px;margin-top:4px;flex-shrink:0;}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.06);padding:22px 0;text-align:center;}
.footer-bottom p{color:var(--text-muted);font-size:13px;}

/* ========== 响应式 ========== */
@media screen and (max-width:75em){
  .main-nav{display:none;}
  .hamburger{display:flex;}
  .overview-grid{grid-template-columns:repeat(2,1fr);}
  .trust-grid{grid-template-columns:repeat(2,1fr);}
  .process-grid{grid-template-columns:repeat(2,1fr);row-gap:40px;}
  .process-step::after{display:none;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .faq-side{position:static;}
  .header-inner{flex-wrap:wrap;height:auto;padding:12px 0;row-gap:10px;}
  .logo-wrap{min-width:auto;}
  .nav-search{order:3;max-width:100%;flex-basis:100%;margin:0;}
}
@media screen and (max-width:64em){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media screen and (max-width:40em){
  :root{--space-section:56px;}
  .section-pad{padding:var(--space-section) 0;}
  .overview-grid{grid-template-columns:1fr!important;}
  .trust-grid{grid-template-columns:1fr!important;}
  .process-grid{grid-template-columns:1fr!important;gap:28px;}
  .gallery-grid{grid-template-columns:1fr!important;}
  .g-card-1,.g-card-2,.g-card-3,.g-card-4,.g-card-5,.g-card-6,.g-card-7{grid-column:span 1 !important;}
  .gallery-card{height:220px;}
  .banner-content{padding:0 8px;}
  .banner-actions{flex-direction:column;align-items:flex-start;}
  .cta-actions{flex-direction:column;align-items:center;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .header-inner{padding:10px 0;}
  .logo-text{font-size:16px;}
  .logo-mark{width:32px;height:32px;font-size:15px;}
  .nav-search form{height:38px;}
  .page-banner{min-height:340px;padding:60px 0;}
}
@media screen and (max-width:520px){
  .trust-grid{grid-template-columns:1fr;}
  .overview-grid{grid-template-columns:1fr;}
}

/* roulang page: category3 */
/* ============================================
           设计变量
        ============================================ */
        :root {
            --base-bg: #0A1324;
            --secondary-bg: #0E1C35;
            --brand-blue: #2E6BFF;
            --accent-cyan: #45E6FF;
            --accent-amber: #FFC857;
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(255, 255, 255, 0.12);
            --text-h: rgba(255, 255, 255, 0.95);
            --text-m: rgba(255, 255, 255, 0.72);
            --text-l: rgba(255, 255, 255, 0.5);
            --radius-card: 16px;
            --radius-img: 12px;
            --radius-btn: 10px;
            --radius-search: 999px;
            --radius-faq: 14px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.25);
            --shadow-btn: 0 0 18px rgba(46, 107, 255, 0.45);
            --spacer-lg: 96px;
            --spacer-md: 56px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans SC", sans-serif;
        }

        /* ============================================
           Reset / Base
        ============================================ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--base-bg);
            color: var(--text-m);
            font-size: 15px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        body.lock-scroll {
            overflow: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease;
        }

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

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

        button,
        input {
            font-family: inherit;
            border: none;
            background: none;
            color: inherit;
        }

        ul {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4 {
            color: var(--text-h);
            font-weight: 700;
            line-height: 1.3;
        }

        /* ============================================
           容器与栅格覆盖
        ============================================ */
        .row {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .row .row {
            padding-left: 0;
            padding-right: 0;
        }

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

        /* ============================================
           Header / 搜索主导航
        ============================================ */
        .site-header {
            background: rgba(10, 19, 36, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .header-inner {
            display: flex;
            align-items: center;
            gap: 24px;
            height: 72px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            min-width: 140px;
        }

        .logo-mark {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand-blue), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 0 16px rgba(46, 107, 255, 0.4);
        }

        .logo-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-h);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .search-wrap {
            flex: 1;
            max-width: 560px;
            margin: 0 auto;
            position: relative;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-search);
            padding: 0 18px;
            height: 44px;
            transition: border-color .3s, box-shadow .3s, background .3s;
        }

        .search-box i {
            color: var(--text-m);
            font-size: 14px;
            margin-right: 10px;
            transition: color .3s;
        }

        .search-box input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-h);
            font-size: 14px;
        }

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

        .search-box:focus-within {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(69, 230, 255, 0.15);
            background: rgba(255, 255, 255, 0.1);
        }

        .search-box:focus-within i {
            color: var(--accent-cyan);
        }

        .search-suggest {
            position: absolute;
            top: 52px;
            left: 0;
            right: 0;
            background: rgba(14, 28, 53, 0.96);
            backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 14px;
            padding: 12px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-6px);
            transition: all .3s ease;
            box-shadow: var(--shadow-card);
            z-index: 100;
        }

        .search-suggest.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .search-suggest a {
            display: block;
            padding: 10px 14px;
            border-radius: 8px;
            font-size: 14px;
            color: var(--text-m);
            transition: background .2s, color .2s;
        }

        .search-suggest a:hover {
            background: rgba(69, 230, 255, 0.08);
            color: var(--accent-cyan);
        }

        .nav-wrap {
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .main-nav a {
            padding: 8px 14px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-m);
            display: flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
            transition: all .25s ease;
            position: relative;
        }

        .main-nav a i {
            font-size: 13px;
            opacity: .8;
        }

        .main-nav a:hover {
            color: var(--text-h);
            background: rgba(255, 255, 255, 0.06);
        }

        .main-nav a.active {
            color: var(--accent-cyan);
            background: rgba(69, 230, 255, 0.08);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            background: var(--accent-cyan);
            border-radius: 3px;
            box-shadow: 0 0 8px rgba(69, 230, 255, 0.7);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            cursor: pointer;
            flex-shrink: 0;
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-h);
            border-radius: 2px;
            transition: all .3s ease;
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ============================================
           页面 Banner
        ============================================ */
        .page-banner {
            background: linear-gradient(135deg, rgba(10, 19, 36, 0.92), rgba(14, 28, 53, 0.78)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            padding: 96px 0 72px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(46, 107, 255, 0.2), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .banner-content h1 {
            font-size: clamp(30px, 6vw, 42px);
            font-weight: 800;
            letter-spacing: 1px;
            margin-bottom: 18px;
        }

        .banner-content h1 .accent {
            color: var(--accent-cyan);
        }

        .banner-content p {
            max-width: 640px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-m);
            margin-bottom: 0;
        }

        .breadcrumb {
            padding: 16px 0;
            font-size: 13px;
            color: var(--text-l);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

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

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

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

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

        /* ============================================
           分类页主体
        ============================================ */
        .category-main {
            padding: 48px 0 80px;
        }

        .content-card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .brand-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: border-color .3s, box-shadow .3s, transform .3s;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            display: flex;
            flex-direction: column;
        }

        .brand-card:hover {
            border-color: rgba(69, 230, 255, 0.5);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
            transform: translateY(-4px);
        }

        .brand-card-media {
            position: relative;
            overflow: hidden;
            height: 180px;
            background: #0E1C35;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .brand-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
            background: #0E1C35;
        }

        .brand-card:hover .brand-card-media img {
            transform: scale(1.05);
        }

        .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(10, 19, 36, 0.82);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(69, 230, 255, 0.3);
            color: var(--accent-cyan);
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 1px;
            font-weight: 500;
        }

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

        .brand-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-h);
        }

        .brand-card-body p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-m);
            margin-bottom: 18px;
            flex: 1;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-cyan);
            transition: gap .25s, color .25s;
        }

        .card-link:hover {
            gap: 10px;
            color: #fff;
        }

        .card-link i {
            font-size: 12px;
        }

        /* 侧栏 FAQ */
        .faq-sidebar {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 28px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            position: sticky;
            top: 88px;
        }

        .faq-sidebar h2 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .faq-sidebar h2 i {
            color: var(--accent-cyan);
            font-size: 18px;
        }

        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

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

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 16px 0;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-h);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: color .25s;
        }

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

        .faq-icon {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--accent-cyan);
            flex-shrink: 0;
            transition: all .3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(135deg);
            background: rgba(69, 230, 255, 0.15);
            border-color: var(--accent-cyan);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .3s ease;
            padding: 0 24px;
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-m);
        }

        .faq-item.active .faq-answer {
            max-height: 240px;
            padding: 0 24px 18px;
        }

        /* ============================================
           CTA 区
        ============================================ */
        .cta-section {
            padding: 72px 0 96px;
            position: relative;
        }

        .cta-inner {
            background: linear-gradient(135deg, rgba(46, 107, 255, 0.12), rgba(69, 230, 255, 0.06)), rgba(10, 19, 36, 0.9);
            border: 1px solid rgba(69, 230, 255, 0.2);
            border-radius: 20px;
            padding: 48px 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
        }

        .cta-text h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .cta-text p {
            font-size: 14px;
            color: var(--text-m);
            max-width: 420px;
            line-height: 1.7;
            margin: 0;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            background: linear-gradient(135deg, var(--brand-blue), var(--accent-cyan));
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            box-shadow: var(--shadow-btn);
            transition: all .3s ease;
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 26px rgba(69, 230, 255, 0.5);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(46, 107, 255, 0.3);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }

        /* ============================================
           页脚
        ============================================ */
        .site-footer {
            background: #071020;
            padding: 72px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            margin-bottom: 24px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-logo .logo-mark {
            width: 32px;
            height: 32px;
            font-size: 15px;
            border-radius: 8px;
        }

        .footer-logo span {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-h);
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: var(--text-l);
            margin: 0;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-h);
            margin-bottom: 18px;
        }

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

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-m);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color .25s, padding-left .25s;
        }

        .footer-col ul li a i {
            font-size: 10px;
            color: var(--text-l);
            transition: color .25s;
        }

        .footer-col ul li a:hover {
            color: var(--accent-cyan);
            padding-left: 4px;
        }

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

        .footer-contact-list li {
            font-size: 13px;
            color: var(--text-m);
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.7;
        }

        .footer-contact-list li i {
            color: var(--accent-cyan);
            font-size: 13px;
            margin-top: 3px;
            flex-shrink: 0;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 16px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-l);
            margin: 0;
        }

        /* ============================================
           移动端导航菜单
        ============================================ */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: rgba(10, 19, 36, 0.98);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding: 16px 20px 24px;
            z-index: 999;
            flex-direction: column;
            gap: 8px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
            transform: translateY(-100%);
            transition: transform .35s ease;
        }

        .mobile-nav.open {
            transform: translateY(0);
        }

        .mobile-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 16px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-m);
            background: rgba(255, 255, 255, 0.03);
            transition: all .25s;
        }

        .mobile-nav a i {
            color: var(--text-l);
            width: 20px;
            text-align: center;
        }

        .mobile-nav a:hover {
            background: rgba(69, 230, 255, 0.08);
            color: var(--accent-cyan);
        }

        .mobile-nav a.active {
            background: rgba(69, 230, 255, 0.1);
            color: var(--accent-cyan);
            border: 1px solid rgba(69, 230, 255, 0.2);
        }

        /* ============================================
           图片加载失败底色
        ============================================ */
        .brand-card-media img {
            background: #0E1C35;
        }

        /* ============================================
           响应式
        ============================================ */

        /* Tablet 40em=640px */
        @media screen and (max-width: 64em) {
            .header-inner {
                gap: 16px;
            }

            .main-nav a {
                padding: 8px 10px;
                font-size: 13px;
            }

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

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

            .content-card-grid {
                gap: 18px;
            }
        }

        /* Mobile 40em=640px 以下 */
        @media screen and (max-width: 40em) {
            .site-header {
                position: sticky;
            }

            .header-inner {
                height: 64px;
            }

            .logo-text {
                font-size: 17px;
            }

            .logo-mark {
                width: 34px;
                height: 34px;
                font-size: 16px;
            }

            .search-wrap {
                order: 3;
                max-width: none;
                width: 100%;
                padding: 0 20px;
                margin: 0;
                position: static;
            }

            .header-inner {
                flex-wrap: wrap;
                height: auto;
                padding: 12px 20px 8px;
                gap: 10px;
            }

            .brand-logo {
                min-width: auto;
                flex: 1;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-wrap {
                display: none;
            }

            .mobile-nav {
                display: flex;
                top: 64px;
            }

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

            .search-suggest {
                top: 48px;
                position: absolute;
            }

            .search-wrap {
                position: relative;
                width: 100%;
            }

            .page-banner {
                padding: 56px 0 40px;
            }

            .category-main {
                padding: 32px 0 56px;
            }

            .content-card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .faq-sidebar {
                position: static;
                margin-top: 32px;
                padding: 20px;
            }

            .cta-section {
                padding: 56px 0 72px;
            }

            .cta-inner {
                padding: 32px 24px;
                flex-direction: column;
                align-items: flex-start;
                gap: 20px;
            }

            .btn-primary {
                width: 100%;
                justify-content: center;
            }

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

            .footer-brand p {
                max-width: none;
            }
        }

        /* 520px 以下微调 */
        @media screen and (max-width: 520px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }

            .row {
                padding-left: 16px;
                padding-right: 16px;
            }

            .brand-card-media {
                height: 160px;
            }

            .brand-card-body {
                padding: 18px;
            }

            .banner-content h1 {
                font-size: 26px;
            }

            .banner-content p {
                font-size: 14px;
            }
        }

        /* backdrop-filter 降级 */
        @supports not (backdrop-filter: blur(18px)) {
            .site-header,
            .faq-sidebar,
            .brand-card,
            .cta-inner,
            .mobile-nav {
                background: rgba(10, 19, 36, 0.92);
            }
        }

        /* ============================================
           Foundation 覆盖
        ============================================ */
        .columns,
        .column {
            padding-left: 12px;
            padding-right: 12px;
        }

        @media screen and (min-width: 64em) {
            .large-8 {
                width: calc(66.6667% - 12px);
                margin-right: 24px;
            }

            .large-4 {
                width: calc(33.3333% - 12px);
            }
        }

        @media screen and (max-width: 63.99em) {
            .large-8,
            .large-4 {
                width: 100%;
                max-width: 100%;
                float: none;
                margin-right: 0;
            }
        }

        a:focus-visible {
            outline: 2px solid rgba(69, 230, 255, 0.6);
            outline-offset: 2px;
        }