/* roulang page: index */
:root {
        --bg-primary: #070B14;
        --bg-secondary: #0D1526;
        --bg-sidebar: #0A101F;
        --glass-bg: rgba(255, 255, 255, 0.05);
        --glass-border: rgba(255, 255, 255, 0.08);
        --primary: #2E7CF6;
        --cyan: #00E5FF;
        --orange: #FF6A00;
        --text-primary: #E8EDF7;
        --text-secondary: #8A97B0;
        --text-muted: #5A6780;
        --radius-card: 16px;
        --radius-btn: 12px;
        --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.25);
        --shadow-primary: 0 0 24px rgba(46, 124, 246, 0.35);
        --shadow-cyan: 0 0 30px rgba(0, 229, 255, 0.25);
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        background: var(--bg-primary);
        color: var(--text-primary);
        line-height: 1.7;
        font-size: 15px;
        -webkit-font-smoothing: antialiased;
    }

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

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

    button,
    input {
        font-family: inherit;
        font-size: inherit;
        border: none;
        outline: none;
        background: none;
        cursor: pointer;
    }

    .glass-card {
        background: var(--glass-bg);
        border: 1px solid var(--glass-border);
        backdrop-filter: blur(16px) saturate(120%);
        border-radius: var(--radius-card);
        transition: all 0.35s ease;
    }

    .glass-card:hover {
        border-color: rgba(255, 255, 255, 0.16);
        box-shadow: 0 4px 28px rgba(0, 0, 0, 0.35), var(--shadow-cyan);
    }

    /* ========== 侧边栏 ========== */
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        width: 216px;
        background: var(--bg-sidebar);
        border-right: 1px solid rgba(255, 255, 255, 0.06);
        display: flex;
        flex-direction: column;
        padding: 28px 18px 20px;
        z-index: 60;
        backdrop-filter: blur(20px);
    }

    .sidebar-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 0 8px 24px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        margin-bottom: 20px;
    }

    .sidebar-logo .logo-badge {
        width: 36px;
        height: 36px;
        min-width: 36px;
        border-radius: 10px;
        background: linear-gradient(135deg, var(--primary), #1B4FD8);
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 800;
        font-size: 14px;
        color: #fff;
        box-shadow: var(--shadow-primary);
    }

    .sidebar-logo .logo-text {
        font-weight: 800;
        font-size: 16px;
        letter-spacing: 0.5px;
        white-space: nowrap;
    }

    .sidebar-nav {
        flex: 1;
        display: flex;
        flex-direction: column;
        gap: 4px;
    }

    .sidebar-nav .nav-label {
        font-size: 11px;
        font-weight: 600;
        color: var(--text-muted);
        text-transform: uppercase;
        letter-spacing: 1.5px;
        padding: 8px 12px 4px;
    }

    .nav-item {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 12px 14px;
        border-radius: 10px;
        color: var(--text-secondary);
        font-size: 14px;
        font-weight: 500;
        position: relative;
        transition: all 0.25s ease;
        border-left: 3px solid transparent;
    }

    .nav-item:hover {
        background: rgba(255, 255, 255, 0.04);
        color: var(--text-primary);
    }

    .nav-item.active {
        background: rgba(46, 124, 246, 0.12);
        color: #fff;
        border-left: 3px solid var(--primary);
        box-shadow: inset 0 0 20px rgba(46, 124, 246, 0.08);
    }

    .nav-item .nav-ico {
        width: 18px;
        height: 18px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 15px;
        opacity: 0.85;
    }

    .sidebar-footer {
        padding: 16px 8px 4px;
        border-top: 1px solid rgba(255, 255, 255, 0.05);
        font-size: 12px;
        color: var(--text-muted);
        line-height: 1.5;
    }

    /* ========== 主内容 ========== */
    .main-wrap {
        margin-left: 216px;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }

    .container-x {
        max-width: 1280px;
        margin: 0 auto;
        padding: 0 40px;
        width: 100%;
    }

    /* ========== 移动端顶栏 ========== */
    .mobile-header {
        display: none;
        position: sticky;
        top: 0;
        z-index: 70;
        background: rgba(7, 11, 20, 0.85);
        backdrop-filter: blur(18px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        padding: 12px 20px;
        align-items: center;
        justify-content: space-between;
    }

    .mobile-logo {
        display: flex;
        align-items: center;
        gap: 8px;
        font-weight: 800;
        font-size: 15px;
    }

    .mobile-logo .logo-badge {
        width: 28px;
        height: 28px;
        border-radius: 8px;
        background: linear-gradient(135deg, var(--primary), #1B4FD8);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 11px;
        color: #fff;
        box-shadow: var(--shadow-primary);
    }

    .hamburger {
        width: 38px;
        height: 38px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 5px;
        border-radius: 8px;
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .hamburger span {
        width: 18px;
        height: 2px;
        background: var(--text-primary);
        border-radius: 2px;
        display: block;
    }

    /* ========== 抽屉 ========== */
    .drawer-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 79;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
    }

    .drawer-overlay.open {
        opacity: 1;
        pointer-events: auto;
    }

    .drawer {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: 280px;
        background: var(--bg-sidebar);
        z-index: 80;
        transform: translateX(100%);
        transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        padding: 24px 18px;
        display: flex;
        flex-direction: column;
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.4);
    }

    .drawer.open {
        transform: translateX(0);
    }

    .drawer-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 0 8px 20px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        margin-bottom: 18px;
    }

    .drawer-logo .logo-badge {
        width: 32px;
        height: 32px;
        border-radius: 9px;
        background: linear-gradient(135deg, var(--primary), #1B4FD8);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 12px;
        font-weight: 800;
        color: #fff;
    }

    .drawer-logo .logo-text {
        font-weight: 800;
        font-size: 15px;
    }

    .drawer .nav-item {
        padding: 13px 14px;
    }

    .drawer-footer {
        margin-top: auto;
        padding: 16px 8px 4px;
        border-top: 1px solid rgba(255, 255, 255, 0.05);
        font-size: 12px;
        color: var(--text-muted);
    }

    /* ========== Hero ========== */
    .hero {
        position: relative;
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 80px 40px 60px;
        overflow: hidden;
    }

    .hero-bg {
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
        opacity: 0.25;
        z-index: 0;
    }

    .hero-bg::after {
        content: '';
        position: absolute;
        inset: 0;
        background: radial-gradient(ellipse at 30% 30%, rgba(46, 124, 246, 0.35), transparent 60%);
    }

    .hero-grid {
        position: absolute;
        inset: 0;
        background-image: radial-gradient(rgba(255, 255, 255, 0.12) 1px, transparent 1px);
        background-size: 28px 28px;
        opacity: 0.4;
        z-index: 0;
    }

    .hero-inner {
        position: relative;
        z-index: 2;
        display: flex;
        align-items: center;
        gap: 48px;
        max-width: 1200px;
        width: 100%;
    }

    .hero-left {
        flex: 1;
        min-width: 0;
    }

    .hero-tagline {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(46, 124, 246, 0.15);
        border: 1px solid rgba(46, 124, 246, 0.3);
        color: var(--cyan);
        font-size: 13px;
        font-weight: 600;
        padding: 6px 14px;
        border-radius: 50px;
        margin-bottom: 22px;
        letter-spacing: 0.5px;
    }

    .hero h1 {
        font-size: clamp(32px, 5vw, 48px);
        font-weight: 800;
        line-height: 1.2;
        margin-bottom: 18px;
        letter-spacing: -0.5px;
    }

    .hero h1 .highlight {
        color: var(--cyan);
        position: relative;
    }

    .hero-sub {
        font-size: 16px;
        color: var(--text-secondary);
        max-width: 440px;
        margin-bottom: 30px;
        line-height: 1.7;
    }

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

    .btn-primary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: linear-gradient(135deg, var(--primary), #1B4FD8);
        color: #fff;
        font-weight: 600;
        font-size: 15px;
        padding: 13px 30px;
        border-radius: 50px;
        box-shadow: var(--shadow-primary);
        transition: all 0.3s ease;
    }

    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 0 36px rgba(46, 124, 246, 0.5);
    }

    .btn-ghost {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.15);
        color: var(--text-primary);
        font-weight: 500;
        font-size: 15px;
        padding: 13px 28px;
        border-radius: 50px;
        backdrop-filter: blur(8px);
        transition: all 0.3s ease;
    }

    .btn-ghost:hover {
        border-color: var(--cyan);
        color: var(--cyan);
        box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
    }

    .hero-video {
        width: 315px;
        min-width: 260px;
        aspect-ratio: 9 / 16;
        max-height: 560px;
        border-radius: 20px;
        border: 1px solid rgba(255, 255, 255, 0.12);
        overflow: hidden;
        position: relative;
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
        background: #0A101F;
    }

    .hero-video img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        opacity: 0.85;
    }

    .hero-video::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(to bottom, transparent 40%, rgba(0, 0, 0, 0.6));
        z-index: 1;
    }

    .play-btn {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 60px;
        height: 60px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.15);
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255, 255, 255, 0.3);
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 2;
        animation: pulse-glow 2s ease-in-out infinite;
    }

    .play-btn::after {
        content: '';
        width: 0;
        height: 0;
        border-left: 18px solid #fff;
        border-top: 11px solid transparent;
        border-bottom: 11px solid transparent;
        margin-left: 4px;
    }

    @keyframes pulse-glow {
        0%,
        100% {
            box-shadow: 0 0 0 0 rgba(46, 124, 246, 0.5);
            transform: translate(-50%, -50%) scale(1);
        }
        50% {
            box-shadow: 0 0 0 20px rgba(46, 124, 246, 0);
            transform: translate(-50%, -50%) scale(1.05);
        }
    }

    .hero-scroll {
        position: absolute;
        bottom: 30px;
        left: 50%;
        transform: translateX(-50%);
        z-index: 2;
        font-size: 12px;
        color: var(--text-muted);
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 6px;
        letter-spacing: 2px;
    }

    .hero-scroll .mouse {
        width: 22px;
        height: 36px;
        border: 2px solid rgba(255, 255, 255, 0.25);
        border-radius: 12px;
        position: relative;
    }

    .hero-scroll .mouse::before {
        content: '';
        position: absolute;
        top: 6px;
        left: 50%;
        transform: translateX(-50%);
        width: 3px;
        height: 7px;
        background: var(--cyan);
        border-radius: 3px;
        animation: scroll-dot 1.5s ease-in-out infinite;
    }

    @keyframes scroll-dot {
        0% {
            opacity: 1;
            transform: translate(-50%, 0);
        }
        100% {
            opacity: 0;
            transform: translate(-50%, 12px);
        }
    }

    /* ========== Section ========== */
    .section {
        padding: 100px 0;
        position: relative;
    }

    .section-alt {
        background: var(--bg-secondary);
    }

    .section-head {
        display: flex;
        align-items: flex-end;
        justify-content: space-between;
        margin-bottom: 36px;
        gap: 16px;
        flex-wrap: wrap;
    }

    .section-title {
        font-size: clamp(24px, 3vw, 32px);
        font-weight: 700;
        line-height: 1.3;
        position: relative;
        padding-left: 16px;
    }

    .section-title::before {
        content: '';
        position: absolute;
        left: 0;
        top: 5px;
        width: 4px;
        height: 24px;
        background: var(--primary);
        border-radius: 4px;
        box-shadow: 0 0 12px rgba(46, 124, 246, 0.6);
    }

    .section-sub {
        color: var(--text-secondary);
        font-size: 14px;
        margin-top: 8px;
    }

    /* ========== 爆款横滑 ========== */
    .hot-scroll {
        display: flex;
        gap: 20px;
        overflow-x: auto;
        padding-bottom: 16px;
        scrollbar-width: thin;
        scrollbar-color: rgba(46, 124, 246, 0.4) transparent;
    }

    .hot-scroll::-webkit-scrollbar {
        height: 6px;
    }

    .hot-scroll::-webkit-scrollbar-track {
        background: transparent;
    }

    .hot-scroll::-webkit-scrollbar-thumb {
        background: rgba(46, 124, 246, 0.35);
        border-radius: 6px;
    }

    .hot-card {
        min-width: 200px;
        width: 200px;
        aspect-ratio: 9 / 16;
        border-radius: 14px;
        overflow: hidden;
        position: relative;
        flex-shrink: 0;
        border: 1px solid rgba(255, 255, 255, 0.08);
        transition: all 0.3s ease;
        display: block;
        background: #0D1526;
    }

    .hot-card:hover {
        transform: scale(1.02);
        border-color: rgba(0, 229, 255, 0.4);
        box-shadow: 0 0 30px rgba(0, 229, 255, 0.15);
    }

    .hot-card img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        position: absolute;
        inset: 0;
    }

    .hot-card::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(to bottom, transparent 45%, rgba(0, 0, 0, 0.8));
    }

    .hot-badge {
        position: absolute;
        top: 10px;
        left: 10px;
        background: var(--orange);
        color: #fff;
        font-size: 11px;
        font-weight: 700;
        padding: 3px 10px;
        border-radius: 6px;
        z-index: 2;
        box-shadow: 0 2px 12px rgba(255, 106, 0, 0.4);
    }

    .duration {
        position: absolute;
        top: 10px;
        right: 10px;
        background: rgba(0, 0, 0, 0.6);
        color: #fff;
        font-size: 11px;
        font-weight: 500;
        padding: 2px 8px;
        border-radius: 5px;
        z-index: 2;
        backdrop-filter: blur(4px);
    }

    .hot-info {
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        padding: 0 14px 14px;
        z-index: 2;
    }

    .hot-info h3 {
        font-size: 14px;
        font-weight: 600;
        line-height: 1.4;
        margin-bottom: 6px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .hot-info .go-link {
        font-size: 12px;
        color: var(--cyan);
        font-weight: 500;
        display: inline-flex;
        align-items: center;
        gap: 4px;
        opacity: 0.8;
        transition: opacity 0.3s;
    }

    .hot-card:hover .go-link {
        opacity: 1;
    }

    .refresh-btn {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.1);
        color: var(--text-secondary);
        font-size: 13px;
        font-weight: 500;
        padding: 8px 16px;
        border-radius: 50px;
        transition: all 0.3s;
    }

    .refresh-btn:hover {
        color: var(--cyan);
        border-color: var(--cyan);
        box-shadow: 0 0 16px rgba(0, 229, 255, 0.15);
    }

    /* ========== 种草清单 ========== */
    .product-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }

    .product-card {
        display: flex;
        background: var(--glass-bg);
        border: 1px solid var(--glass-border);
        border-radius: var(--radius-card);
        overflow: hidden;
        backdrop-filter: blur(16px) saturate(120%);
        transition: all 0.35s ease;
    }

    .product-card:hover {
        border-color: rgba(0, 229, 255, 0.25);
        box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35), var(--shadow-cyan);
        transform: translateY(-3px);
    }

    .product-card .pc-img {
        width: 120px;
        min-width: 120px;
        aspect-ratio: 1 / 1;
        object-fit: cover;
    }

    .product-card .pc-info {
        flex: 1;
        padding: 16px 16px 16px 14px;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        min-width: 0;
    }

    .product-card h3 {
        font-size: 15px;
        font-weight: 600;
        line-height: 1.4;
        margin-bottom: 4px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .product-card .pc-desc {
        font-size: 13px;
        color: var(--text-secondary);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        margin-bottom: 8px;
    }

    .rating-row {
        display: flex;
        align-items: center;
        gap: 6px;
        font-size: 12px;
        color: var(--text-secondary);
        margin-bottom: 10px;
    }

    .rating-row .stars {
        color: var(--orange);
        font-size: 12px;
        letter-spacing: 1px;
    }

    .buy-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, var(--orange), #E05500);
        color: #fff;
        font-size: 13px;
        font-weight: 600;
        padding: 7px 16px;
        border-radius: 50px;
        align-self: flex-start;
        transition: all 0.3s;
        box-shadow: 0 2px 12px rgba(255, 106, 0, 0.3);
    }

    .buy-btn:hover {
        box-shadow: 0 0 24px rgba(255, 106, 0, 0.5);
        transform: translateY(-1px);
    }

    /* ========== 用户口碑 ========== */
    .review-scroll {
        display: flex;
        gap: 20px;
        overflow-x: auto;
        padding-bottom: 16px;
        scrollbar-width: thin;
        scrollbar-color: rgba(46, 124, 246, 0.4) transparent;
    }

    .review-scroll::-webkit-scrollbar {
        height: 6px;
    }

    .review-scroll::-webkit-scrollbar-thumb {
        background: rgba(46, 124, 246, 0.35);
        border-radius: 6px;
    }

    .review-card {
        min-width: 300px;
        flex-shrink: 0;
        background: var(--glass-bg);
        border: 1px solid var(--glass-border);
        border-radius: 14px;
        padding: 20px;
        backdrop-filter: blur(12px);
        transition: all 0.3s;
    }

    .review-card:hover {
        border-color: rgba(255, 255, 255, 0.16);
        background: rgba(255, 255, 255, 0.06);
    }

    .review-top {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 10px;
    }

    .avatar {
        width: 38px;
        height: 38px;
        border-radius: 50%;
        background: linear-gradient(135deg, var(--primary), #6554C0);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 14px;
        font-weight: 700;
        color: #fff;
        flex-shrink: 0;
    }

    .review-name {
        font-size: 14px;
        font-weight: 600;
    }

    .review-stars {
        color: var(--orange);
        font-size: 12px;
        letter-spacing: 1px;
        margin-left: auto;
    }

    .review-text {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.6;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .score-strip {
        margin-top: 30px;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 40px;
        flex-wrap: wrap;
        background: rgba(46, 124, 246, 0.08);
        border: 1px solid rgba(46, 124, 246, 0.15);
        border-radius: 16px;
        padding: 20px 30px;
        backdrop-filter: blur(8px);
    }

    .score-strip .score-item {
        text-align: center;
    }

    .score-strip .score-num {
        font-size: 28px;
        font-weight: 800;
        color: var(--cyan);
        line-height: 1.2;
    }

    .score-strip .score-label {
        font-size: 13px;
        color: var(--text-secondary);
        margin-top: 2px;
    }

    /* ========== 资讯列表 ========== */
    .news-list {
        display: flex;
        flex-direction: column;
        gap: 16px;
    }

    .news-item {
        display: flex;
        align-items: center;
        gap: 20px;
        background: var(--glass-bg);
        border: 1px solid var(--glass-border);
        border-radius: 14px;
        padding: 18px 20px;
        backdrop-filter: blur(12px);
        transition: all 0.3s;
    }

    .news-item:hover {
        border-color: rgba(0, 229, 255, 0.3);
        background: rgba(255, 255, 255, 0.06);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
    }

    .news-cat {
        flex-shrink: 0;
        background: rgba(46, 124, 246, 0.15);
        color: var(--cyan);
        font-size: 12px;
        font-weight: 600;
        padding: 4px 12px;
        border-radius: 6px;
        white-space: nowrap;
    }

    .news-body {
        flex: 1;
        min-width: 0;
    }

    .news-body h3 {
        font-size: 16px;
        font-weight: 600;
        margin-bottom: 4px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        transition: color 0.3s;
    }

    .news-item:hover .news-body h3 {
        color: var(--cyan);
    }

    .news-body p {
        font-size: 13px;
        color: var(--text-secondary);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .news-meta {
        flex-shrink: 0;
        display: flex;
        flex-direction: column;
        align-items: flex-end;
        gap: 4px;
        font-size: 12px;
        color: var(--text-muted);
    }

    .empty-state {
        text-align: center;
        padding: 50px 20px;
        background: var(--glass-bg);
        border: 1px dashed rgba(255, 255, 255, 0.12);
        border-radius: 16px;
        color: var(--text-secondary);
        font-size: 14px;
    }

    /* ========== CTA ========== */
    .cta-section {
        position: relative;
        padding: 100px 40px;
        text-align: center;
        overflow: hidden;
        background: url('/assets/images/backpic/back-2.webp') center/cover fixed;
    }

    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: rgba(7, 11, 20, 0.85);
        backdrop-filter: blur(4px);
    }

    .cta-section::after {
        content: '';
        position: absolute;
        inset: 0;
        background:
            repeating-linear-gradient(-45deg, transparent 0 18px, rgba(46, 124, 246, 0.05) 18px 20px),
            radial-gradient(ellipse at center, rgba(46, 124, 246, 0.3), transparent 65%);
    }

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

    .cta-inner h2 {
        font-size: clamp(28px, 4vw, 40px);
        font-weight: 800;
        line-height: 1.25;
        margin-bottom: 14px;
    }

    .cta-inner p {
        font-size: 16px;
        color: var(--text-secondary);
        margin-bottom: 30px;
    }

    .btn-cta {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 10px;
        background: linear-gradient(135deg, var(--orange), #E05500);
        color: #fff;
        font-size: 17px;
        font-weight: 700;
        padding: 16px 44px;
        border-radius: 50px;
        box-shadow: 0 4px 24px rgba(255, 106, 0, 0.4);
        transition: all 0.3s;
        border: none;
    }

    .btn-cta:hover {
        transform: translateY(-2px);
        box-shadow: 0 0 40px rgba(255, 106, 0, 0.6);
    }

    /* ========== FAQ ========== */
    .faq-list {
        max-width: 820px;
        margin: 0 auto;
    }

    .faq-item {
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        background: rgba(255, 255, 255, 0.02);
        border-radius: 12px;
        margin-bottom: 12px;
        overflow: hidden;
    }

    .faq-item summary {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 18px 20px;
        font-size: 16px;
        font-weight: 600;
        cursor: pointer;
        list-style: none;
        gap: 16px;
        transition: background 0.3s;
    }

    .faq-item summary::-webkit-details-marker {
        display: none;
    }

    .faq-item summary:hover {
        background: rgba(255, 255, 255, 0.03);
    }

    .faq-item summary .faq-icon {
        width: 24px;
        height: 24px;
        min-width: 24px;
        border-radius: 50%;
        border: 1px solid rgba(255, 255, 255, 0.2);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 14px;
        font-weight: 400;
        color: var(--text-secondary);
        transition: all 0.3s;
    }

    .faq-item[open] summary .faq-icon {
        transform: rotate(45deg);
        border-color: var(--cyan);
        color: var(--cyan);
        box-shadow: 0 0 12px rgba(0, 229, 255, 0.3);
    }

    .faq-item .faq-answer {
        padding: 0 20px 18px;
        font-size: 15px;
        line-height: 1.7;
        color: var(--text-secondary);
    }

    /* ========== 页脚 ========== */
    .footer {
        background: #060A12;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding: 60px 40px 30px;
    }

    .footer-grid {
        max-width: 1200px;
        margin: 0 auto;
        display: grid;
        grid-template-columns: 1.5fr 1fr 1fr;
        gap: 48px;
        padding-bottom: 40px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .footer-brand .logo-badge {
        width: 34px;
        height: 34px;
        border-radius: 10px;
        background: linear-gradient(135deg, var(--primary), #1B4FD8);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 13px;
        font-weight: 800;
        color: #fff;
        box-shadow: var(--shadow-primary);
    }

    .footer-brand h3 {
        font-size: 18px;
        font-weight: 800;
        margin: 14px 0 8px;
    }

    .footer-brand p {
        font-size: 13px;
        color: var(--text-muted);
        line-height: 1.7;
        max-width: 280px;
    }

    .footer-col h4 {
        font-size: 14px;
        font-weight: 700;
        margin-bottom: 16px;
        color: var(--text-primary);
    }

    .footer-col a {
        display: block;
        font-size: 14px;
        color: var(--text-secondary);
        padding: 6px 0;
        transition: color 0.3s;
    }

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

    .footer-bottom {
        max-width: 1200px;
        margin: 20px auto 0;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 12px;
        font-size: 13px;
        color: var(--text-muted);
    }

    /* ========== 响应式 ========== */
    @media (max-width: 1280px) {
        .container-x {
            padding: 0 32px;
        }

        .product-grid {
            grid-template-columns: repeat(3, 1fr);
        }
    }

    @media (max-width: 1023px) {
        .sidebar {
            width: 72px;
            padding: 24px 12px 14px;
        }

        .sidebar-logo {
            justify-content: center;
            padding: 0 0 20px;
        }

        .sidebar-logo .logo-text,
        .sidebar-nav .nav-label,
        .nav-item .nav-label,
        .sidebar-footer {
            display: none;
        }

        .sidebar-logo .logo-badge {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            font-size: 15px;
        }

        .nav-item {
            justify-content: center;
            padding: 14px;
            border-radius: 12px;
            border-left: none;
            border-bottom: 3px solid transparent;
        }

        .nav-item.active {
            border-left: none;
            border-bottom: 3px solid var(--primary);
        }

        .nav-item .nav-ico {
            font-size: 18px;
        }

        .main-wrap {
            margin-left: 72px;
        }

        .product-grid {
            grid-template-columns: repeat(2, 1fr);
        }

        .hero-inner {
            flex-direction: column;
            text-align: center;
            gap: 40px;
        }

        .hero-left {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .hero-sub {
            max-width: 420px;
        }

        .hero-video {
            width: 260px;
        }
    }

    @media (max-width: 767px) {
        .sidebar {
            display: none;
        }

        .main-wrap {
            margin-left: 0;
        }

        .mobile-header {
            display: flex;
        }

        .container-x {
            padding: 0 20px;
        }

        .hero {
            padding: 60px 20px 40px;
        }

        .hero-inner {
            gap: 32px;
        }

        .hero-video {
            width: 240px;
            max-height: 420px;
        }

        .hero-scroll {
            display: none;
        }

        .section {
            padding: 60px 0;
        }

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

        .product-card .pc-img {
            width: 100px;
            min-width: 100px;
        }

        .news-item {
            flex-direction: column;
            align-items: flex-start;
            gap: 10px;
        }

        .news-meta {
            flex-direction: row;
            align-items: center;
            gap: 12px;
        }

        .review-card {
            min-width: 240px;
        }

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

        .footer {
            padding: 40px 20px 20px;
        }

        .cta-section {
            padding: 60px 20px;
        }

        .score-strip {
            gap: 20px;
        }

        .faq-item summary {
            font-size: 15px;
            padding: 15px 16px;
        }

        .faq-item .faq-answer {
            padding: 0 16px 15px;
            font-size: 14px;
        }
    }

    @media (max-width: 480px) {
        .hero h1 {
            font-size: 28px;
        }

        .hero-sub {
            font-size: 14px;
        }

        .btn-primary,
        .btn-ghost {
            padding: 11px 22px;
            font-size: 14px;
        }

        .section-title {
            font-size: 22px;
        }

        .product-card {
            flex-direction: row;
        }

        .product-card .pc-img {
            width: 90px;
            min-width: 90px;
        }

        .product-card .pc-info {
            padding: 12px;
        }

        .buy-btn {
            font-size: 12px;
            padding: 6px 12px;
        }
    }

    /* focus 可访问性 */
    a:focus-visible,
    button:focus-visible {
        outline: 2px solid var(--cyan);
        outline-offset: 2px;
        border-radius: 4px;
    }

/* roulang page: article */
:root {
            --bg-space: #070B14;
            --bg-panel: #0D1526;
            --electric: #2E7CF6;
            --neon: #00E5FF;
            --energy: #FF6A00;
            --text-main: #E8EDF7;
            --text-sub: #8A97B0;
            --text-weak: #5A6780;
            --glass-bg: rgba(255,255,255,0.05);
            --glass-border: rgba(255,255,255,0.08);
            --glass-hover: rgba(255,255,255,0.16);
            --radius-card: 16px;
            --radius-vert: 12px;
            --shadow-card: 0 4px 20px rgba(0,0,0,0.25);
            --glow-electric: 0 0 24px rgba(46,124,246,0.35);
            --glow-neon: 0 0 30px rgba(0,229,255,0.25);
        }

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

        html { scroll-behavior: smooth; }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-space);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }

        a { color: inherit; text-decoration: none; transition: color 0.25s ease; }
        img { max-width: 100%; display: block; }
        button { font-family: inherit; cursor: pointer; }
        input, textarea { font-family: inherit; }

        /* ===== App Shell ===== */
        .app-shell { display: flex; min-height: 100vh; }

        .sidebar {
            width: 216px;
            background: rgba(10, 16, 31, 0.98);
            border-right: 1px solid var(--glass-border);
            position: fixed;
            top: 0; left: 0; bottom: 0;
            z-index: 50;
            display: flex;
            flex-direction: column;
            padding: 24px 16px;
            backdrop-filter: blur(16px) saturate(120%);
        }

        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 12px;
            margin-bottom: 28px;
        }

        .logo-badge {
            width: 36px; height: 36px;
            background: linear-gradient(135deg, var(--electric), var(--neon));
            border-radius: 10px;
            display: flex; align-items: center; justify-content: center;
            font-weight: 900; font-size: 18px; color: #fff;
            box-shadow: var(--glow-electric);
            flex-shrink: 0;
        }

        .sidebar-logo span {
            font-weight: 800;
            font-size: 16px;
            color: var(--text-main);
            white-space: nowrap;
        }

        .sidebar-nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }

        .nav-group-label {
            font-size: 11px; color: var(--text-weak);
            text-transform: uppercase; letter-spacing: 0.08em;
            padding: 12px 12px 6px; font-weight: 600;
        }

        .nav-item {
            display: flex; align-items: center; gap: 12px;
            padding: 12px 14px;
            border-radius: 12px;
            color: var(--text-sub);
            font-weight: 500; font-size: 14px;
            transition: all 0.25s ease;
            position: relative;
            border: 1px solid transparent;
        }

        .nav-item:hover {
            color: var(--text-main);
            background: rgba(255,255,255,0.04);
            border-color: rgba(255,255,255,0.06);
        }

        .nav-item.active {
            color: #fff;
            background: rgba(46,124,246,0.12);
            border-left: 4px solid var(--electric);
            padding-left: 10px;
        }

        .nav-ico { font-size: 18px; width: 24px; text-align: center; flex-shrink: 0; }

        .sidebar-footer {
            font-size: 11px; color: var(--text-weak);
            padding: 14px 12px 4px;
            border-top: 1px solid rgba(255,255,255,0.06);
            margin-top: auto;
        }

        .main-content {
            margin-left: 216px;
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== Mobile ===== */
        .mobile-topbar {
            display: none;
            position: fixed; top: 0; left: 0; right: 0;
            z-index: 60;
            height: 60px;
            background: rgba(10,16,31,0.96);
            backdrop-filter: blur(16px) saturate(120%);
            border-bottom: 1px solid var(--glass-border);
            align-items: center; justify-content: space-between;
            padding: 0 16px;
        }

        .mobile-menu-btn {
            background: none; border: none; color: var(--text-main);
            font-size: 26px; line-height: 1; padding: 8px;
        }

        .mobile-drawer {
            display: none;
            position: fixed; top: 0; right: 0; bottom: 0;
            width: 280px;
            background: #0A101F;
            z-index: 70;
            padding: 28px 20px;
            flex-direction: column;
            box-shadow: -8px 0 30px rgba(0,0,0,0.5);
            transform: translateX(100%);
            transition: transform 0.35s cubic-bezier(.4,0,.2,1);
            overflow-y: auto;
        }

        .mobile-drawer.open { transform: translateX(0); }

        .drawer-backdrop {
            display: none;
            position: fixed; top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(0,0,0,0.6);
            z-index: 65;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .drawer-backdrop.show { opacity: 1; }

        .drawer-close-btn {
            background: none; border: none; color: var(--text-weak);
            font-size: 22px; align-self: flex-end; padding: 4px 8px;
        }

        /* ===== 文章Hero ===== */
        .article-hero {
            padding: 48px 48px 28px;
            background: var(--bg-panel);
            border-bottom: 1px solid var(--glass-border);
            position: relative;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: -80%; right: -10%;
            width: 420px; height: 420px;
            background: radial-gradient(circle, rgba(46,124,246,0.18), transparent 70%);
            pointer-events: none;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            bottom: -40%; left: -5%;
            width: 260px; height: 260px;
            background: radial-gradient(circle, rgba(0,229,255,0.06), transparent 70%);
            pointer-events: none;
        }

        .article-container {
            max-width: 760px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

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

        .breadcrumb a:hover { color: var(--neon); }
        .breadcrumb .sep { color: var(--text-weak); }

        .article-title {
            font-size: clamp(28px, 4vw, 38px);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 18px;
            color: var(--text-main);
            letter-spacing: -0.01em;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 20px;
            font-size: 13px;
            color: var(--text-weak);
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }

        .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* ===== 正文区域 ===== */
        .article-body-wrap {
            padding: 44px 48px 64px;
            background: var(--bg-space);
            flex: 1;
        }

        .article-body {
            max-width: 760px;
            margin: 0 auto;
        }

        .article-body p {
            font-size: 16px;
            line-height: 1.85;
            color: rgba(232,237,247,0.92);
            margin-bottom: 24px;
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.3;
            margin: 44px 0 16px;
            padding-left: 14px;
            position: relative;
            color: var(--text-main);
        }

        .article-body h2::before {
            content: '';
            position: absolute;
            left: 0; top: 5px; bottom: 5px;
            width: 4px;
            background: var(--electric);
            border-radius: 4px;
            box-shadow: var(--glow-electric);
        }

        .article-body h3 {
            font-size: 18px;
            font-weight: 600;
            margin: 30px 0 12px;
            color: var(--text-main);
        }

        .article-body blockquote {
            background: rgba(255,255,255,0.04);
            border-left: 4px solid var(--electric);
            border-radius: 0 12px 12px 0;
            padding: 16px 20px;
            margin: 28px 0;
            color: var(--text-sub);
            font-style: normal;
            font-size: 15px;
        }

        .article-body img {
            border-radius: 12px;
            margin: 28px 0;
            box-shadow: var(--shadow-card);
        }

        .article-body ul,
        .article-body ol {
            margin: 16px 0 24px;
            padding-left: 26px;
            color: rgba(232,237,247,0.9);
        }

        .article-body li {
            margin-bottom: 10px;
            line-height: 1.85;
        }

        .article-body a {
            color: var(--neon);
            border-bottom: 1px solid rgba(0,229,255,0.3);
            transition: all 0.25s ease;
        }

        .article-body a:hover {
            color: var(--electric);
            border-bottom-color: var(--electric);
        }

        .article-body strong { color: var(--text-main); font-weight: 700; }

        .article-body hr {
            border: none;
            height: 1px;
            background: var(--glass-border);
            margin: 40px 0;
        }

        /* ===== 空态 ===== */
        .empty-state {
            text-align: center;
            padding: 80px 20px;
            max-width: 760px;
            margin: 0 auto;
        }

        .empty-state .empty-icon {
            font-size: 60px;
            margin-bottom: 16px;
            opacity: 0.6;
        }

        .empty-state h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .empty-state p {
            color: var(--text-sub);
            margin-bottom: 24px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 34px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: all 0.35s ease;
            text-decoration: none;
            line-height: 1;
        }

        .btn-primary {
            background: linear-gradient(135deg, #4B8DFA, var(--electric));
            color: #fff;
            box-shadow: var(--glow-electric);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 36px rgba(46,124,246,0.6);
        }

        .btn-outline {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            color: var(--text-main);
            backdrop-filter: blur(10px);
        }

        .btn-outline:hover {
            border-color: var(--neon);
            box-shadow: var(--glow-neon);
            color: #fff;
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 48px;
            background: var(--bg-panel);
            border-top: 1px solid var(--glass-border);
        }

        .related-header {
            max-width: 760px;
            margin: 0 auto 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .related-title {
            font-size: 24px;
            font-weight: 700;
            position: relative;
            padding-left: 14px;
        }

        .related-title::before {
            content: '';
            position: absolute;
            left: 0; top: 4px; bottom: 4px;
            width: 4px;
            background: var(--electric);
            border-radius: 4px;
            box-shadow: var(--glow-electric);
        }

        .related-grid {
            max-width: 760px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.3s ease;
            cursor: pointer;
            display: block;
        }

        .related-card:hover {
            border-color: var(--neon);
            box-shadow: var(--glow-neon);
            transform: translateY(-5px);
        }

        .related-card img {
            width: 100%;
            height: 130px;
            object-fit: cover;
        }

        .related-card-body {
            padding: 14px 16px 16px;
        }

        .related-card-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 10px;
        }

        .related-card-tag {
            font-size: 12px;
            color: var(--neon);
            background: rgba(0,229,255,0.08);
            padding: 2px 10px;
            border-radius: 20px;
            display: inline-block;
        }

        /* ===== CTA ===== */
        .article-cta {
            padding: 64px 48px;
            text-align: center;
            background: var(--bg-space);
            position: relative;
            overflow: hidden;
        }

        .article-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(0,229,255,0.08) 1px, transparent 1px);
            background-size: 28px 28px;
            opacity: 0.4;
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 620px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-inner p {
            color: var(--text-sub);
            margin-bottom: 28px;
            font-size: 15px;
        }

        /* ===== Footer ===== */
        .footer {
            background: #060A12;
            padding: 48px 48px 24px;
            border-top: 1px solid var(--glass-border);
        }

        .footer-grid {
            max-width: 760px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand p {
            color: var(--text-sub);
            font-size: 13px;
            margin-top: 12px;
            line-height: 1.6;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            color: var(--text-sub);
            font-size: 13px;
            margin-bottom: 8px;
            transition: all 0.2s;
        }

        .footer-col a:hover { color: var(--neon); }

        .footer-bottom {
            max-width: 760px;
            margin: 0 auto;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.06);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: var(--text-weak);
            flex-wrap: wrap;
            gap: 8px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1279px) {
            .sidebar {
                width: 72px;
                padding: 24px 10px;
            }
            .sidebar-logo { justify-content: center; padding: 8px 0; margin-bottom: 20px; }
            .sidebar-logo span,
            .nav-group-label + .nav-label,
            .sidebar-footer,
            .nav-item .nav-label:not(.nav-group-label) { display: none; }
            .nav-item { justify-content: center; padding: 14px; }
            .nav-item.active { padding-left: 14px; }
            .main-content { margin-left: 72px; }
            .nav-group-label { text-align: center; padding-left: 0; }
        }

        @media (max-width: 767px) {
            .app-shell { flex-direction: column; }
            .sidebar { display: none; }
            .main-content { margin-left: 0; padding-top: 60px; }
            .mobile-topbar { display: flex; }

            .article-hero { padding: 32px 20px 20px; }
            .article-body-wrap { padding: 28px 20px 44px; }
            .article-body p { font-size: 15px; line-height: 1.75; }
            .article-body h2 { font-size: 21px; }

            .related-section { padding: 32px 20px; }
            .related-grid { grid-template-columns: 1fr; gap: 16px; }
            .related-card img { height: 160px; }

            .article-cta { padding: 48px 20px; }
            .footer { padding: 32px 20px 16px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }

            .mobile-drawer { display: flex; }
        }

        @media (max-width: 520px) {
            .article-title { font-size: 26px; }
            .article-meta { gap: 8px 14px; font-size: 12px; }
            .breadcrumb { font-size: 12px; gap: 5px; }
            .btn { padding: 12px 28px; font-size: 14px; }
            .cta-inner h2 { font-size: 22px; }
        }

        @media (min-width: 768px) {
            .mobile-drawer { display: none !important; }
            .drawer-backdrop { display: none !important; }
        }

        /* focus 样式 */
        a:focus-visible, button:focus-visible {
            outline: 2px solid var(--neon);
            outline-offset: 2px;
            border-radius: 4px;
        }

/* roulang page: category1 */
:root {
            --bg-primary: #070B14;
            --bg-secondary: #0D1526;
            --sidebar-bg: #0A101F;
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(255, 255, 255, 0.08);
            --glass-hover-border: rgba(255, 255, 255, 0.16);
            --primary: #2E7CF6;
            --cyan: #00E5FF;
            --orange: #FF6A00;
            --text-main: #E8EDF7;
            --text-sub: #8A97B0;
            --text-weak: #5A6780;
            --radius-card: 16px;
            --radius-vertical: 12px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.25);
            --shadow-glow: 0 0 24px rgba(46, 124, 246, 0.35);
            --shadow-cyan: 0 0 30px rgba(0, 229, 255, 0.25);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-primary);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }
        ::selection {
            background: rgba(46, 124, 246, 0.35);
            color: #fff;
        }
        .logo-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, #2E7CF6, #00E5FF);
            color: #fff;
            font-weight: 900;
            font-size: 19px;
            box-shadow: 0 0 20px rgba(46, 124, 246, 0.35);
            flex-shrink: 0;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            border-radius: 999px;
            background: linear-gradient(135deg, #2E7CF6, #1a5fd0);
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            box-shadow: var(--shadow-glow);
            transition: all .3s ease;
            border: none;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 36px rgba(46, 124, 246, 0.55);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 13px 30px;
            border-radius: 999px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            color: var(--text-main);
            font-weight: 600;
            font-size: 15px;
            transition: all .3s ease;
            backdrop-filter: blur(12px);
        }
        .btn-secondary:hover {
            border-color: var(--cyan);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
        }
        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--cyan);
            font-weight: 600;
            font-size: 14px;
            transition: all .25s ease;
        }
        .btn-text:hover {
            gap: 10px;
            text-shadow: 0 0 12px rgba(0, 229, 255, 0.4);
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 36px;
        }
        .section-header h2 {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 700;
            line-height: 1.3;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
        }
        .section-header p {
            color: var(--text-sub);
            font-size: 14px;
            margin-top: 8px;
        }
        .refresh-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 999px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            color: var(--text-sub);
            font-size: 13px;
            font-weight: 600;
            transition: all .3s ease;
            white-space: nowrap;
        }
        .refresh-btn:hover {
            border-color: var(--cyan);
            color: var(--cyan);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.12);
        }
        .tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.25);
            color: var(--cyan);
        }
        .tag-hot {
            background: rgba(255, 106, 0, 0.12);
            border-color: rgba(255, 106, 0, 0.3);
            color: var(--orange);
        }
        .tag-new {
            background: rgba(46, 124, 246, 0.1);
            border-color: rgba(46, 124, 246, 0.3);
            color: #7db4ff;
        }
        .refresh-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 999px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            color: var(--text-sub);
            font-size: 13px;
            font-weight: 600;
            transition: all .3s ease;
            white-space: nowrap;
        }
        .refresh-btn:hover {
            border-color: var(--cyan);
            color: var(--cyan);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.12);
        }
        /* ========== 左侧导航 ========== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 216px;
            height: 100vh;
            z-index: 1000;
            background: var(--sidebar-bg);
            border-right: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            flex-direction: column;
            backdrop-filter: blur(20px);
        }
        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 28px 20px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .sidebar-brand .brand-text {
            font-size: 18px;
            font-weight: 800;
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .sidebar-nav {
            flex: 1;
            padding: 20px 12px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .sidebar-nav .nav-label {
            font-size: 11px;
            font-weight: 600;
            color: var(--text-weak);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            padding: 0 12px 8px;
            display: block;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            border-radius: 12px;
            color: var(--text-sub);
            font-weight: 500;
            font-size: 14px;
            position: relative;
            transition: all .25s ease;
            border-left: 4px solid transparent;
        }
        .nav-item:hover {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-main);
        }
        .nav-item.active {
            background: linear-gradient(90deg, rgba(46, 124, 246, 0.15), rgba(46, 124, 246, 0.02));
            color: #fff;
            font-weight: 600;
            border-left: 4px solid var(--primary);
        }
        .nav-ico {
            font-size: 18px;
            line-height: 1;
            flex-shrink: 0;
        }
        .sidebar-bottom {
            padding: 16px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 12px;
            color: var(--text-weak);
        }
        /* ========== 主容器 ========== */
        .main-wrapper {
            margin-left: 216px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .content {
            flex: 1;
            max-width: 1440px;
            padding: 36px 48px 20px;
            width: 100%;
        }
        /* ========== 移动端顶部 ========== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: rgba(10, 16, 31, 0.9);
            backdrop-filter: blur(20px);
            z-index: 1100;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .mobile-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 16px;
        }
        .menu-toggle {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            font-size: 20px;
            color: var(--text-main);
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
        }
        .drawer-backdrop {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1200;
            opacity: 0;
            transition: opacity .3s;
        }
        .drawer-backdrop.open {
            opacity: 1;
        }
        .drawer {
            position: fixed;
            top: 0;
            right: -300px;
            width: 280px;
            height: 100vh;
            background: var(--sidebar-bg);
            z-index: 1300;
            transition: right .3s ease;
            display: flex;
            flex-direction: column;
            padding: 20px;
        }
        .drawer.open {
            right: 0;
        }
        .drawer .sidebar-nav {
            padding: 20px 0;
        }
        .drawer .nav-label {
            display: block;
        }
        .drawer .nav-item .nav-label {
            display: inline;
        }
        /* ========== 页面 Hero ========== */
        .page-hero {
            position: relative;
            padding: 56px 0 50px;
            border-radius: 24px;
            margin-bottom: 70px;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(13, 21, 38, 0.96), rgba(7, 11, 20, 0.88)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(46, 124, 246, 0.35), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
            background-size: 24px 24px;
            pointer-events: none;
        }
        .page-hero>* {
            position: relative;
            z-index: 1;
        }
        .breadcrumb {
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 20px;
            display: flex;
            gap: 6px;
            align-items: center;
        }
        .breadcrumb a {
            color: var(--text-sub);
        }
        .breadcrumb a:hover {
            color: var(--cyan);
        }
        .page-hero h1 {
            font-size: clamp(32px, 5vw, 48px);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }
        .page-hero h1 .grad {
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero .hero-desc {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 600px;
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .hero-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }
        .stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .stat-item .stat-num {
            font-size: 26px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.02em;
        }
        .stat-item .stat-label {
            font-size: 13px;
            color: var(--text-sub);
        }
        /* ========== 产品分类索引 ========== */
        .products-index {
            margin-bottom: 80px;
        }
        .index-layout {
            display: grid;
            grid-template-columns: 220px 1fr;
            gap: 36px;
            align-items: start;
        }
        .index-nav {
            position: sticky;
            top: 28px;
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 16px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 16px;
            backdrop-filter: blur(16px);
        }
        .index-nav-title {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-weak);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            padding: 0 8px 10px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            margin-bottom: 8px;
        }
        .index-nav a {
            padding: 9px 12px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-sub);
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all .25s ease;
            border-left: 3px solid transparent;
        }
        .index-nav a .idx-num {
            font-size: 12px;
            color: var(--text-weak);
            font-weight: 600;
            min-width: 20px;
        }
        .index-nav a:hover {
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-main);
            border-left-color: var(--cyan);
        }
        .index-content {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .product-item {
            display: grid;
            grid-template-columns: 200px 1fr;
            gap: 24px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 16px;
            padding: 20px;
            backdrop-filter: blur(16px);
            transition: all .35s ease;
            scroll-margin-top: 30px;
        }
        .product-item:hover {
            border-color: rgba(0, 229, 255, 0.4);
            box-shadow: var(--shadow-cyan);
            transform: translateY(-2px);
        }
        .product-image {
            border-radius: 12px;
            overflow: hidden;
            aspect-ratio: 4/3;
            background: var(--bg-secondary);
        }
        .product-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .product-info {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .product-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .product-info h3 {
            font-size: 20px;
            font-weight: 700;
            line-height: 1.3;
        }
        .product-info p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            flex: 1;
        }
        .product-meta {
            display: flex;
            gap: 16px;
            font-size: 13px;
            color: var(--text-weak);
            flex-wrap: wrap;
        }
        .product-meta .rating {
            color: var(--orange);
            font-weight: 600;
        }
        .product-link {
            margin-top: 4px;
        }
        /* ========== 热门推荐 ========== */
        .hot-products {
            margin-bottom: 80px;
        }
        .hot-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .hot-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 16px;
            overflow: hidden;
            backdrop-filter: blur(16px);
            transition: all .35s ease;
        }
        .hot-card:hover {
            border-color: rgba(0, 229, 255, 0.35);
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3), var(--shadow-cyan);
        }
        .hot-card-img {
            aspect-ratio: 4/3;
            overflow: hidden;
            position: relative;
        }
        .hot-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .hot-card:hover .hot-card-img img {
            transform: scale(1.04);
        }
        .hot-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(255, 106, 0, 0.24);
            border: 1px solid rgba(255, 106, 0, 0.5);
            color: #ffb077;
            font-size: 12px;
            font-weight: 700;
            backdrop-filter: blur(6px);
        }
        .hot-card-body {
            padding: 18px;
        }
        .hot-card-body h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .hot-card-body p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.6;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .hot-card-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .hot-card-bottom .rating {
            color: var(--orange);
            font-size: 13px;
            font-weight: 600;
        }
        .btn-buy {
            padding: 6px 16px;
            border-radius: 999px;
            background: linear-gradient(135deg, #FF6A00, #ff8a3a);
            color: #fff;
            font-size: 13px;
            font-weight: 700;
            transition: all .3s ease;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            box-shadow: 0 0 14px rgba(255, 106, 0, 0.25);
        }
        .btn-buy:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 26px rgba(255, 106, 0, 0.4);
        }
        /* ========== 选购指南 ========== */
        .buy-guide {
            margin-bottom: 80px;
            padding: 48px 40px;
            background: var(--bg-secondary);
            border-radius: 24px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            position: relative;
            overflow: hidden;
        }
        .buy-guide::before {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -80px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(46, 124, 246, 0.22), transparent 70%);
            border-radius: 50%;
        }
        .guide-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
            z-index: 1;
        }
        .step-item {
            text-align: center;
            padding: 20px 12px;
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(46, 124, 246, 0.2), rgba(0, 229, 255, 0.12));
            border: 1px solid rgba(46, 124, 246, 0.4);
            color: var(--cyan);
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .step-item h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.6;
        }
        .step-line {
            position: absolute;
            top: 96px;
            left: 12%;
            right: 12%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.3), transparent);
            z-index: 0;
        }
        /* ========== FAQ ========== */
        .faq-section {
            margin-bottom: 80px;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 0 20px;
        }
        .faq-item:first-child {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 20px 0;
            cursor: pointer;
            font-size: 17px;
            font-weight: 600;
            transition: color .25s;
        }
        .faq-q:hover {
            color: var(--cyan);
        }
        .faq-q .faq-icon {
            font-size: 18px;
            color: var(--text-sub);
            flex-shrink: 0;
            transition: transform .3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--cyan);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .35s ease, opacity .3s;
            padding: 0;
            opacity: 0;
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.75;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding-bottom: 20px;
            opacity: 1;
        }
        /* ========== CTA ========== */
        .cta-section {
            margin-bottom: 20px;
            padding: 60px 40px;
            border-radius: 24px;
            text-align: center;
            background: linear-gradient(135deg, rgba(13, 21, 38, 0.8), rgba(7, 11, 20, 0.8)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            border: 1px solid rgba(255, 255, 255, 0.06);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            left: 30%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.18), transparent 70%);
            border-radius: 50%;
        }
        .cta-section>* {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: clamp(26px, 4vw, 40px);
            font-weight: 800;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .cta-section p {
            font-size: 16px;
            color: var(--text-sub);
            margin-bottom: 28px;
        }
        .cta-section .btn-primary {
            font-size: 16px;
            padding: 16px 40px;
        }
        /* ========== 页脚 ========== */
        .footer {
            background: #060A12;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 48px 48px 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            max-width: 1440px;
            margin: 0 auto;
            margin-bottom: 28px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-sub);
            margin-top: 12px;
            line-height: 1.7;
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-main);
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-sub);
            padding: 5px 0;
            border-bottom: 1px solid transparent;
            transition: all .2s;
        }
        .footer-col a:hover {
            color: var(--cyan);
            padding-left: 4px;
        }
        .footer-bottom {
            max-width: 1440px;
            margin: 0 auto;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            gap: 16px;
            font-size: 13px;
            color: var(--text-weak);
            flex-wrap: wrap;
        }
        /* ========== 响应式 ========== */
        @media (max-width: 1279px) {
            .sidebar {
                width: 72px;
            }
            .sidebar .sidebar-brand {
                padding: 20px 12px;
                justify-content: center;
            }
            .sidebar .sidebar-brand .brand-text,
            .sidebar .nav-item span.nav-label {
                display: none;
            }
            .sidebar .nav-item {
                justify-content: center;
                padding: 14px;
                border-left: none;
                border-radius: 12px;
            }
            .sidebar .nav-item.active {
                border-left: none;
                box-shadow: inset 0 0 0 1px rgba(46, 124, 246, 0.3);
            }
            .sidebar .sidebar-nav .nav-label {
                display: none;
            }
            .sidebar .sidebar-bottom {
                display: none;
            }
            .sidebar-nav {
                gap: 4px;
                padding: 16px 8px;
            }
            .nav-ico {
                font-size: 20px;
            }
            .main-wrapper {
                margin-left: 72px;
            }
            .content {
                padding: 28px 32px;
            }
            .footer {
                padding: 40px 32px 20px;
            }
        }
        @media (max-width: 1023px) {
            .hot-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guide-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-line {
                display: none;
            }
            .index-layout {
                grid-template-columns: 1fr;
            }
            .index-nav {
                position: relative;
                top: auto;
                flex-direction: row;
                flex-wrap: wrap;
                overflow-x: auto;
            }
            .index-nav-title {
                width: 100%;
            }
            .index-nav a {
                white-space: nowrap;
            }
        }
        @media (max-width: 767px) {
            .sidebar {
                display: none;
            }
            .main-wrapper {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
            }
            .content {
                padding: 76px 16px 10px;
            }
            .page-hero {
                padding: 36px 24px;
                border-radius: 18px;
                margin-bottom: 50px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .hero-stats {
                gap: 16px;
            }
            .stat-item .stat-num {
                font-size: 20px;
            }
            .hot-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .hot-card-body {
                padding: 14px;
            }
            .hot-card-body h3 {
                font-size: 14px;
            }
            .product-item {
                grid-template-columns: 1fr;
                padding: 16px;
            }
            .product-image {
                aspect-ratio: 16/10;
            }
            .footer {
                padding: 32px 20px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 6px;
                text-align: center;
            }
            .buy-guide {
                padding: 32px 20px;
            }
            .guide-steps {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cta-section {
                padding: 40px 20px;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
                margin-bottom: 24px;
            }
        }
        @media (max-width: 480px) {
            .hot-grid {
                grid-template-columns: 1fr;
            }
            .hot-card-img {
                aspect-ratio: 16/10;
            }
            .content {
                padding: 70px 12px 8px;
            }
            .page-hero {
                padding: 28px 18px;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .footer-grid {
                gap: 20px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-deep: #070B14;
            --bg-panel: #0A101F;
            --bg-card: rgba(255,255,255,.05);
            --border-card: rgba(255,255,255,.08);
            --border-hover: rgba(255,255,255,.16);
            --primary: #2E7CF6;
            --cyan: #00E5FF;
            --orange: #FF6A00;
            --text-main: #E8EDF7;
            --text-sub: #8A97B0;
            --text-dim: #5A6780;
            --r-lg: 16px;
            --r-sm: 12px;
            --shadow-card: 0 4px 20px rgba(0,0,0,.25);
            --shadow-primary: 0 0 24px rgba(46,124,246,.35);
            --glow: 0 0 30px rgba(0,229,255,.25);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-deep);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }

        /* ===== 侧边栏 ===== */
        .sidebar {
            position: fixed;
            left: 0;
            top: 0;
            width: 204px;
            height: 100vh;
            background: var(--bg-panel);
            border-right: 1px solid var(--border-card);
            display: flex;
            flex-direction: column;
            padding: 20px 16px;
            z-index: 50;
            backdrop-filter: blur(16px);
        }
        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 10px 20px;
            border-bottom: 1px solid var(--border-card);
            margin-bottom: 16px;
        }
        .logo-badge {
            width: 32px;
            height: 32px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            color: #fff;
            box-shadow: var(--shadow-primary);
            flex-shrink: 0;
        }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .sidebar-nav > .nav-label {
            font-size: 12px;
            color: var(--text-dim);
            text-transform: uppercase;
            letter-spacing: .08em;
            padding: 8px 10px;
            font-weight: 600;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 12px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 14px;
            color: var(--text-sub);
            transition: all .25s;
            border-left: 3px solid transparent;
            position: relative;
        }
        .nav-item:hover {
            color: var(--text-main);
            background: rgba(255,255,255,.04);
        }
        .nav-item.active {
            color: #fff;
            background: linear-gradient(90deg, rgba(46,124,246,.18), rgba(46,124,246,.05));
            border-left-color: var(--primary);
        }
        .nav-ico {
            font-size: 18px;
            width: 24px;
            text-align: center;
            flex-shrink: 0;
        }
        .sidebar-foot {
            margin-top: auto;
            padding: 12px 10px;
            font-size: 12px;
            color: var(--text-dim);
            border-top: 1px solid var(--border-card);
        }

        /* ===== 主内容 ===== */
        .main-content {
            margin-left: 204px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .container {
            padding: 0 32px;
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }

        /* ===== 移动端 ===== */
        .mobile-bar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: rgba(10,15,31,.92);
            backdrop-filter: blur(14px);
            z-index: 60;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            border-bottom: 1px solid var(--border-card);
        }
        .hamburger-btn {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--border-card);
            background: transparent;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--text-main);
            transition: border-color .3s;
        }
        .hamburger-btn:hover {
            border-color: var(--cyan);
        }
        .drawer {
            position: fixed;
            top: 0;
            left: 0;
            width: 280px;
            height: 100vh;
            background: var(--bg-panel);
            z-index: 70;
            transform: translateX(-100%);
            transition: transform .35s cubic-bezier(.4,0,.2,1);
            padding: 20px;
            display: flex;
            flex-direction: column;
            border-right: 1px solid var(--border-card);
        }
        .drawer.open {
            transform: translateX(0);
        }
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,.6);
            z-index: 65;
            display: none;
        }
        .drawer-overlay.show {
            display: block;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            border-radius: 999px;
            padding: 12px 24px;
            transition: all .25s;
            border: none;
            font-size: 15px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #1E5FD0);
            color: #fff;
            box-shadow: var(--shadow-primary);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(46,124,246,.5);
        }
        .btn-secondary {
            background: rgba(255,255,255,.06);
            border: 1px solid var(--border-card);
            color: var(--text-main);
            backdrop-filter: blur(8px);
        }
        .btn-secondary:hover {
            border-color: var(--cyan);
            box-shadow: var(--glow);
            transform: translateY(-2px);
        }
        .btn-orange {
            background: linear-gradient(135deg, var(--orange), #E85D00);
            color: #fff;
            box-shadow: 0 0 20px rgba(255,106,0,.3);
        }
        .btn-orange:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(255,106,0,.45);
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(rgba(7,11,20,.88), rgba(7,11,20,.94)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            overflow: hidden;
            border-bottom: 1px solid var(--border-card);
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -40px;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(46,124,246,.35), transparent 70%);
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr .9fr;
            gap: 40px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0,229,255,.1);
            border: 1px solid rgba(0,229,255,.3);
            color: var(--cyan);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .hero-title {
            font-size: clamp(32px, 5vw, 48px);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .hero-subtitle {
            font-size: 20px;
            color: var(--cyan);
            font-weight: 600;
            margin-bottom: 16px;
        }
        .hero-desc {
            color: var(--text-sub);
            font-size: 15px;
            max-width: 480px;
            margin-bottom: 28px;
        }
        .hero-cta {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero-meta {
            display: flex;
            gap: 20px;
            margin-top: 32px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-dim);
        }
        .hero-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hero-stage {
            position: relative;
        }
        .stage-card {
            position: relative;
            max-width: 280px;
            aspect-ratio: 9/16;
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border-hover);
            box-shadow: var(--shadow-card);
            margin: 0 auto;
        }
        .stage-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .stage-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0,0,0,.55), transparent 40%);
        }
        .stage-play {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: rgba(46,124,246,.85);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 40px rgba(46,124,246,.6);
            animation: pulse 2s infinite;
            color: #fff;
            font-size: 20px;
        }
        .stage-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: linear-gradient(135deg, var(--orange), #E85D00);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 999px;
            box-shadow: 0 4px 12px rgba(255,106,0,.4);
        }
        .stage-caption {
            position: absolute;
            bottom: 16px;
            left: 14px;
            right: 14px;
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            text-shadow: 0 2px 8px rgba(0,0,0,.5);
        }
        @keyframes pulse {
            0%, 100% {
                box-shadow: 0 0 0 0 rgba(46,124,246,.5);
            }
            50% {
                box-shadow: 0 0 0 16px rgba(46,124,246,0);
            }
        }

        /* ===== 数据看板 ===== */
        .stats-section {
            padding: 80px 0;
            background: var(--bg-panel);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--r-lg);
            padding: 28px 24px;
            text-align: center;
            backdrop-filter: blur(12px);
            transition: border-color .3s, transform .3s;
        }
        .stat-card:hover {
            border-color: var(--cyan);
            transform: translateY(-4px);
        }
        .stat-num {
            font-size: 36px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-sub);
            margin-top: 8px;
        }

        /* ===== 板块头 ===== */
        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
            gap: 16px;
        }
        .section-title {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .section-title::before {
            content: '';
            width: 4px;
            height: 24px;
            background: linear-gradient(180deg, var(--primary), var(--cyan));
            border-radius: 4px;
            flex-shrink: 0;
        }
        .section-more {
            font-size: 14px;
            color: var(--text-sub);
            display: flex;
            align-items: center;
            gap: 6px;
            transition: color .3s;
        }
        .section-more:hover {
            color: var(--cyan);
        }

        /* ===== 瀑布流 ===== */
        .masonry-section {
            padding: 80px 0;
        }
        .masonry-grid {
            columns: 2;
            column-gap: 24px;
        }
        .masonry-card {
            break-inside: avoid;
            margin-bottom: 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--r-lg);
            overflow: hidden;
            backdrop-filter: blur(12px);
            transition: all .35s;
            display: block;
        }
        .masonry-card:hover {
            transform: translateY(-4px);
            border-color: var(--cyan);
            box-shadow: var(--glow);
        }
        .m-card-cover {
            position: relative;
            aspect-ratio: 4/3;
            overflow: hidden;
        }
        .m-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s;
        }
        .masonry-card:hover .m-card-cover img {
            transform: scale(1.04);
        }
        .m-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(0,0,0,.55);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 12px;
            padding: 3px 10px;
            border-radius: 999px;
            border: 1px solid rgba(255,255,255,.2);
        }
        .m-card-body {
            padding: 16px;
        }
        .m-card-title {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .m-card-desc {
            font-size: 13px;
            color: var(--text-sub);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .m-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-dim);
        }
        .m-card-link {
            color: var(--cyan);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .m-card-link:hover {
            color: #fff;
        }

        /* ===== 深度视角 ===== */
        .feature-section {
            padding: 80px 0;
            background: var(--bg-panel);
        }
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .feature-copy h2 {
            margin-bottom: 16px;
        }
        .feature-copy p {
            color: var(--text-sub);
            margin-bottom: 16px;
        }
        .feature-points {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .feature-point {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            font-size: 14px;
            color: var(--text-sub);
        }
        .feature-point i {
            color: var(--cyan);
            font-style: normal;
            font-weight: 700;
            flex-shrink: 0;
        }
        .feature-img-wrap {
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border-card);
            box-shadow: var(--shadow-card);
        }
        .feature-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ===== 流程 ===== */
        .steps-section {
            padding: 80px 0;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--r-lg);
            padding: 28px 20px;
            text-align: center;
            backdrop-filter: blur(12px);
            position: relative;
            transition: border-color .3s, transform .3s;
        }
        .step-card:hover {
            border-color: var(--cyan);
            transform: translateY(-4px);
        }
        .step-num {
            width: 44px;
            height: 44px;
            margin: 0 auto 16px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(46,124,246,.2), rgba(0,229,255,.1));
            border: 1px solid rgba(46,124,246,.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
            color: var(--cyan);
        }
        .step-title {
            font-weight: 700;
            margin-bottom: 8px;
            font-size: 16px;
        }
        .step-text {
            font-size: 13px;
            color: var(--text-sub);
        }

        /* ===== 口碑 ===== */
        .reviews-section {
            padding: 80px 0;
            background: var(--bg-panel);
        }
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .review-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--r-lg);
            padding: 24px;
            backdrop-filter: blur(12px);
            transition: border-color .3s;
        }
        .review-card:hover {
            border-color: var(--cyan);
        }
        .review-head {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .review-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #fff;
            font-size: 14px;
            flex-shrink: 0;
        }
        .review-name {
            font-weight: 600;
            font-size: 14px;
        }
        .review-star {
            color: var(--orange);
            font-size: 13px;
            margin-top: 2px;
        }
        .review-text {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 80px 0;
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid rgba(255,255,255,.06);
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--r-lg);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color .3s;
        }
        .faq-item:hover {
            border-color: var(--border-hover);
        }
        .faq-q {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            background: transparent;
            border: none;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 600;
            text-align: left;
            transition: color .3s;
        }
        .faq-q:hover {
            color: var(--cyan);
        }
        .faq-icon {
            font-size: 22px;
            color: var(--cyan);
            transition: transform .3s;
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
            padding: 0 24px;
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding-bottom: 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0 100px;
            background: var(--bg-panel);
        }
        .cta-box {
            position: relative;
            background: linear-gradient(rgba(7,11,20,.8), rgba(7,11,20,.92)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            border: 1px solid var(--border-card);
            border-radius: 24px;
            padding: 60px 40px;
            text-align: center;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -50px;
            left: 50%;
            transform: translateX(-50%);
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(46,124,246,.3), transparent);
            pointer-events: none;
        }
        .cta-title {
            font-size: clamp(26px, 4vw, 40px);
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
        }
        .cta-desc {
            font-size: 15px;
            color: var(--text-sub);
            max-width: 520px;
            margin: 0 auto 28px;
            position: relative;
        }
        .cta-btn {
            font-size: 17px;
            padding: 14px 36px;
            position: relative;
        }

        /* ===== 页脚 ===== */
        .footer {
            border-top: 1px solid var(--border-card);
            background: #060A12;
            padding: 60px 32px 0;
        }
        .footer-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-sub);
            margin-top: 14px;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: flex;
            font-size: 14px;
            color: var(--text-sub);
            padding: 6px 0;
            transition: color .3s;
        }
        .footer-col a:hover {
            color: var(--cyan);
        }
        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: var(--text-dim);
            border-top: 1px solid rgba(255,255,255,.06);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1279px) {
            .sidebar {
                width: 72px;
                padding: 20px 12px;
            }
            .sidebar-logo {
                justify-content: center;
                padding: 8px 0 20px;
            }
            .sidebar-logo span:not(.logo-badge) {
                display: none;
            }
            .sidebar-nav > .nav-label {
                display: none;
            }
            .nav-item {
                justify-content: center;
                padding: 12px;
                border-left: none;
            }
            .nav-item .nav-label {
                display: none;
            }
            .nav-ico {
                font-size: 20px;
            }
            .nav-item.active {
                background: rgba(46,124,246,.15);
            }
            .sidebar-foot {
                display: none;
            }
            .main-content {
                margin-left: 72px;
            }
            .hero-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 767px) {
            .sidebar {
                display: none;
            }
            .mobile-bar {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: 56px;
            }
            .container {
                padding: 0 16px;
            }
            .hero-section {
                padding: 64px 0 60px;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-stage {
                max-width: 240px;
                margin: 0 auto;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .masonry-grid {
                columns: 1;
            }
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .reviews-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
            }
        }