/* ========== Design Variables ========== */
        :root {
            --primary: #1c6ad9;
            --primary-dark: #124f9e;
            --primary-light: #e6f0fc;
            --secondary: #0ea5e9;
            --accent: #f59e0b;
            --accent-light: #fef3c7;
            --bg: #f6f9fc;
            --bg-white: #ffffff;
            --text: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 10px rgba(15, 42, 90, 0.06);
            --shadow-md: 0 6px 24px rgba(15, 42, 90, 0.08);
            --shadow-lg: 0 16px 44px rgba(15, 42, 90, 0.12);
            --transition: all 0.3s ease;
        }

        /* ========== Reset & Base ========== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            scroll-padding-top: 100px;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul,
        ol {
            list-style: none;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        input,
        select,
        textarea {
            font-family: inherit;
        }

        /* ========== Container ========== */
        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== Header ========== */
        .site-header {
            background: var(--bg-white);
            box-shadow: 0 2px 14px rgba(15, 42, 90, 0.06);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 20px;
        }
        .logo {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
            line-height: 1.3;
        }
        .logo i {
            font-size: 24px;
            color: var(--accent);
        }
        .logo span {
            color: var(--text);
            font-weight: 400;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-list a {
            color: var(--text-muted);
            font-weight: 500;
            font-size: 15px;
            padding: 8px 4px;
            position: relative;
        }
        .nav-list a:hover {
            color: var(--primary);
        }
        .nav-list a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-list a.active::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--primary);
            border-radius: 3px 3px 0 0;
        }
        .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 10px 22px !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            box-shadow: 0 4px 12px rgba(28, 106, 217, 0.3);
            transition: var(--transition);
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(28, 106, 217, 0.4);
        }

        /* ===== Header Steps ===== */
        .header-steps {
            background: linear-gradient(135deg, #f0f6fe 0%, #e8f1fc 100%);
            border-top: 1px solid var(--border);
            padding: 10px 0;
        }
        .steps-wrapper {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0;
        }
        .step-item {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border-radius: 30px;
            transition: var(--transition);
            font-size: 13px;
            font-weight: 500;
            color: var(--text-muted);
        }
        .step-item:hover {
            background: var(--bg-white);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .step-item .step-num {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
        }
        .step-line {
            width: 28px;
            height: 2px;
            background: #c8dbf5;
            border-radius: 2px;
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            background: linear-gradient(135deg, #124f9e 0%, #1c6ad9 55%, #0ea5e9 100%);
            color: #fff;
            overflow: hidden;
            padding: 56px 0 70px;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            z-index: 0;
        }
        .hero-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(18, 79, 158, 0.35) 0%, rgba(28, 106, 217, 0.15) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-text {
            text-align: center;
            max-width: 860px;
            margin: 0 auto 44px;
        }
        .hero-text h1 {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.35;
            letter-spacing: 1px;
            margin-bottom: 18px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }
        .hero-text p {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.92);
            max-width: 720px;
            margin: 0 auto 26px;
        }
        .hero-badges {
            display: flex;
            justify-content: center;
            gap: 28px;
            flex-wrap: wrap;
            margin-top: 10px;
        }
        .hero-badge {
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 30px;
            padding: 8px 22px;
            font-size: 14px;
            font-weight: 500;
        }
        .hero-badge i {
            color: var(--accent);
        }

        /* ===== Coupon Wall ===== */
        .coupon-wall {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            padding: 10px 0 0;
        }
        .coupon-card {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-lg);
            padding: 24px 28px;
            text-align: center;
            width: 260px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .coupon-card::before {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 4px;
            background: var(--primary);
        }
        .coupon-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.18);
        }
        .coupon-main {
            width: 310px;
            padding: 34px 32px;
            transform: scale(1.04);
            border-radius: var(--radius-lg);
            border: 2px solid var(--accent);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
        }
        .coupon-main:hover {
            transform: scale(1.04) translateY(-6px);
        }
        .coupon-main::before {
            background: var(--accent);
        }
        .coupon-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
        .coupon-main .coupon-tag {
            background: var(--accent-light);
            color: #b45309;
        }
        .coupon-value {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .coupon-main .coupon-value {
            font-size: 52px;
            color: var(--accent);
        }
        .coupon-value small {
            font-size: 20px;
            font-weight: 700;
        }
        .coupon-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.5;
            margin-bottom: 18px;
            min-height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .coupon-btn {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 10px 30px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            box-shadow: 0 4px 12px rgba(28, 106, 217, 0.3);
        }
        .coupon-btn:hover {
            background: var(--primary-dark);
            transform: scale(1.04);
        }
        .coupon-main .coupon-btn {
            background: var(--accent);
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
        }
        .coupon-main .coupon-btn:hover {
            background: #d97706;
        }

        /* ========== Section Base ========== */
        .section {
            padding: 70px 0;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-head {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 48px;
        }
        .section-head .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            padding: 5px 18px;
            border-radius: 30px;
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 12px;
        }
        .section-head p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* ========== Commission Data ========== */
        .commission-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            max-width: 1080px;
            margin: 0 auto 40px;
        }
        .data-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            padding: 30px 24px;
            text-align: center;
            transition: var(--transition);
        }
        .data-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .data-card .data-icon {
            font-size: 34px;
            color: var(--primary);
            margin-bottom: 14px;
        }
        .data-card .data-num {
            font-size: 34px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .data-card .data-label {
            font-size: 13px;
            color: var(--text-muted);
        }
        .commission-note {
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
            padding: 18px 28px;
            background: var(--primary-light);
            border-radius: var(--radius-md);
            font-size: 14px;
            color: var(--primary-dark);
            border: 1px solid #c4dcf8;
        }
        .commission-note i {
            margin-right: 6px;
        }

        /* ========== Materials Cards ========== */
        .materials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .material-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .material-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-5px);
        }
        .material-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .material-body {
            padding: 24px;
        }
        .material-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .material-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 18px;
        }
        .material-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 9px 22px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
        }
        .material-btn:hover {
            background: var(--primary-dark);
            gap: 12px;
        }

        /* ========== News Section ========== */
        .news-wrap {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 36px;
            align-items: start;
        }
        .news-list {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
        }
        .news-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 6px;
            border-bottom: 1px solid #f1f5f9;
            transition: var(--transition);
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-item:hover {
            background: var(--primary-light);
            border-radius: 8px;
            padding-left: 14px;
        }
        .news-item .news-title {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            flex: 1;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .news-item .news-title .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }
        .news-item .news-date {
            font-size: 13px;
            color: var(--text-muted);
            flex-shrink: 0;
            margin-left: 16px;
        }
        .news-side {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .news-side img {
            width: 100%;
            height: 190px;
            object-fit: cover;
        }
        .news-side-body {
            padding: 22px;
        }
        .news-side-body .label {
            display: inline-block;
            background: var(--accent-light);
            color: #b45309;
            font-size: 12px;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
        }
        .news-side-body h4 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 8px;
        }
        .news-side-body p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 14px;
        }
        .news-side-body a {
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
        }
        .news-side-body a:hover {
            color: var(--primary-dark);
        }

        /* ========== Join CTA ========== */
        .join-section {
            background: linear-gradient(135deg, #0f3d7a 0%, #1c6ad9 70%, #0ea5e9 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }
        .join-section::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -40px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }
        .join-section::after {
            content: "";
            position: absolute;
            bottom: -80px;
            left: 20%;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
        }
        .join-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }
        .join-text {
            flex: 1;
            min-width: 300px;
        }
        .join-text h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .join-text p {
            font-size: 15px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
            max-width: 520px;
        }
        .join-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .join-btn-primary {
            background: var(--accent);
            color: #fff !important;
            padding: 14px 34px;
            border-radius: 40px;
            font-size: 16px;
            font-weight: 700;
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
        }
        .join-btn-primary:hover {
            background: #d97706;
            transform: translateY(-3px);
            box-shadow: 0 10px 28px rgba(245, 158, 11, 0.5);
        }
        .join-btn-outline {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.6);
            color: #fff;
            padding: 12px 30px;
            border-radius: 40px;
            font-size: 16px;
            font-weight: 600;
            transition: var(--transition);
        }
        .join-btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }

        /* ========== Guarantee ========== */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .guarantee-item {
            text-align: center;
            padding: 28px 18px;
            border-radius: var(--radius-md);
            background: var(--bg-white);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .guarantee-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .guarantee-item .g-icon {
            font-size: 32px;
            color: var(--primary);
            background: var(--primary-light);
            width: 68px;
            height: 68px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }
        .guarantee-item h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .guarantee-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========== Collections ========== */
        .collections-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .collection-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
        }
        .collection-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-5px);
        }
        .collection-card .c-cover {
            height: 130px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .collection-card .c-cover .c-count {
            position: absolute;
            right: 12px;
            top: 12px;
            background: rgba(0, 0, 0, 0.6);
            color: #fff;
            font-size: 12px;
            padding: 3px 12px;
            border-radius: 20px;
            backdrop-filter: blur(4px);
        }
        .collection-body {
            padding: 20px;
        }
        .collection-body h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .collection-body .c-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 14px;
        }
        .collection-body .c-link {
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .collection-body .c-link:hover {
            gap: 10px;
        }

        /* ========== FAQ ========== */
        .faq-wrap {
            max-width: 840px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-q {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 14px;
            position: relative;
        }
        .faq-q .faq-icon {
            color: var(--primary);
            font-size: 18px;
            flex-shrink: 0;
        }
        .faq-q .faq-toggle {
            margin-left: auto;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .faq-item.open .faq-toggle {
            transform: rotate(45deg);
            color: var(--primary);
        }
        .faq-a {
            display: none;
            padding: 0 24px 20px 56px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            border-top: 1px solid #f1f5f9;
            padding-top: 16px;
        }
        .faq-item.open .faq-a {
            display: block;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 50px 0 24px;
        }
        .footer-main {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo-footer {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 360px;
        }
        .footer-links h5 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-links ul li {
            margin-bottom: 8px;
        }
        .footer-links ul li a {
            font-size: 14px;
            color: #94a3b8;
        }
        .footer-links ul li a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: #64748b;
            line-height: 1.8;
        }
        .footer-bottom a {
            color: #94a3b8;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ========== Floating CTA ========== */
        .floating-cta {
            position: fixed;
            bottom: 24px;
            right: 24px;
            z-index: 90;
            background: var(--accent);
            color: #fff;
            border-radius: 50px;
            padding: 14px 26px;
            font-size: 14px;
            font-weight: 700;
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.5);
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .floating-cta:hover {
            transform: translateY(-4px) scale(1.03);
            box-shadow: 0 12px 36px rgba(245, 158, 11, 0.6);
        }

        /* ========== Focus / Active States ========== */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(28, 106, 217, 0.4);
            outline-offset: 2px;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .commission-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .materials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .collections-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-wrap {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 50px 0;
            }
            .hero {
                padding: 38px 0 50px;
            }
            .hero-text h1 {
                font-size: 26px;
            }
            .hero-text p {
                font-size: 15px;
            }
            .header-main {
                flex-wrap: wrap;
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 14px 0;
            }
            .nav-list {
                width: 100%;
                justify-content: space-between;
                gap: 10px;
                flex-wrap: wrap;
            }
            .nav-cta {
                margin-left: auto;
            }
            .steps-wrapper {
                flex-wrap: wrap;
                gap: 6px;
            }
            .step-line {
                display: none;
            }
            .coupon-wall {
                flex-direction: column;
                align-items: center;
            }
            .coupon-main {
                transform: none;
                order: -1;
            }
            .coupon-main:hover {
                transform: translateY(-6px);
            }
            .join-content {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
            .join-actions {
                justify-content: center;
            }
            .footer-main {
                grid-template-columns: 1fr;
                gap: 28px;
                text-align: center;
            }
            .footer-brand p {
                margin: 0 auto;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .commission-grid {
                grid-template-columns: 1fr;
            }
            .materials-grid {
                grid-template-columns: 1fr;
            }
            .guarantee-grid {
                grid-template-columns: 1fr;
            }
            .collections-grid {
                grid-template-columns: 1fr;
            }
            .hero-badges {
                flex-direction: column;
                align-items: center;
                gap: 12px;
            }
            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
            .news-item .news-date {
                margin-left: 0;
                font-size: 12px;
            }
            .floating-cta {
                bottom: 16px;
                right: 16px;
                padding: 12px 20px;
                font-size: 13px;
            }
        }

:root {
            --primary: #1e4a8a;
            --primary-dark: #0f2f5e;
            --primary-light: #3b82f6;
            --accent: #f59e0b;
            --bg: #f8fafc;
            --surface: #ffffff;
            --text: #0f172a;
            --muted: #64748b;
            --border: #e2e8f0;
            --radius: 18px;
            --shadow: 0 10px 40px rgba(15, 23, 42, .08);
            --shadow-sm: 0 2px 10px rgba(15, 23, 42, .05);
            --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-base);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        ul {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: 96px 0;
        }
        .section-sm {
            padding: 64px 0;
        }
        .section-title {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--muted);
            max-width: 640px;
            margin-bottom: 48px;
        }
        /* ==================== HEADER ==================== */
        .site-header {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(15, 23, 42, .04);
        }
        .header-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.01em;
            line-height: 1.2;
        }
        .logo i {
            font-size: 1.6rem;
            color: var(--primary-light);
        }
        .logo span {
            font-weight: 400;
            color: var(--muted);
            font-size: 0.95rem;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 10px 18px;
            border-radius: 12px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--muted);
            transition: all .25s ease;
        }
        .nav-list a:hover {
            color: var(--primary);
            background: rgba(30, 74, 138, .06);
        }
        .nav-list a.active {
            color: var(--primary);
            background: rgba(30, 74, 138, .10);
            font-weight: 600;
        }
        .nav-list a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 10px 22px;
            border-radius: 12px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(30, 74, 138, .3);
        }
        .nav-list a.nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(30, 74, 138, .35);
        }
        .header-steps {
            background: linear-gradient(90deg, rgba(30, 74, 138, .04), rgba(59, 130, 246, .06), rgba(245, 158, 11, .05));
            border-top: 1px solid var(--border);
            padding: 12px 0;
        }
        .steps-wrapper {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
        }
        .step-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--muted);
            padding: 6px 12px;
            border-radius: 10px;
            transition: all .25s ease;
        }
        .step-item:hover {
            color: var(--primary);
            background: rgba(255, 255, 255, .8);
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .step-line {
            width: 22px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary-light), var(--accent));
            border-radius: 2px;
            opacity: .4;
        }
        /* ==================== HERO ==================== */
        .cat-hero {
            position: relative;
            padding: 88px 0 72px;
            background: linear-gradient(135deg, #eef4ff 0%, #f8fafc 60%, #fef3c7 100%);
            overflow: hidden;
        }
        .cat-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
        }
        .cat-hero::after {
            content: "";
            position: absolute;
            top: -120px;
            right: -80px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(59, 130, 246, .12), transparent 70%);
            pointer-events: none;
        }
        .cat-hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 64px;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(30, 74, 138, .08);
            border: 1px solid rgba(30, 74, 138, .15);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: 999px;
            margin-bottom: 24px;
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.03em;
            color: var(--text);
            margin-bottom: 20px;
        }
        .hero-title .highlight {
            color: var(--primary-light);
            position: relative;
        }
        .hero-desc {
            font-size: 1.1rem;
            color: var(--muted);
            margin-bottom: 32px;
            max-width: 520px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 40px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff !important;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: 14px;
            font-size: 1rem;
            box-shadow: 0 6px 24px rgba(30, 74, 138, .3);
            transition: all .3s ease;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(30, 74, 138, .35);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            padding: 13px 28px;
            border-radius: 14px;
            font-size: 1rem;
            border: 1.5px solid rgba(30, 74, 138, .25);
            transition: all .3s ease;
        }
        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(30, 74, 138, .04);
        }
        /* 对比卡片 */
        .compare-wrap {
            background: rgba(255, 255, 255, .9);
            backdrop-filter: blur(12px);
            border-radius: var(--radius);
            padding: 8px;
            box-shadow: var(--shadow);
            border: 1px solid rgba(255, 255, 255, .6);
        }
        .compare-card {
            border-radius: 14px;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            gap: 16px;
            transition: all .3s ease;
        }
        .compare-card.plain {
            border: 1px solid transparent;
        }
        .compare-card.plain:hover {
            background: #f8fafc;
        }
        .compare-card.recommend {
            background: linear-gradient(135deg, rgba(30, 74, 138, .04), rgba(245, 158, 11, .08));
            border: 2px solid rgba(245, 158, 11, .6);
            box-shadow: 0 4px 20px rgba(245, 158, 11, .15);
            position: relative;
        }
        .rec-tag {
            position: absolute;
            top: -12px;
            right: 16px;
            background: var(--accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 999px;
            box-shadow: 0 2px 8px rgba(245, 158, 11, .4);
        }
        .compare-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.1rem;
        }
        .compare-icon.plain {
            background: #f1f5f9;
            color: #94a3b8;
        }
        .compare-icon.rec {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
        }
        .compare-body {
            flex: 1;
        }
        .compare-title {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 2px;
        }
        .compare-sub {
            font-size: 0.82rem;
            color: var(--muted);
        }
        .compare-badge {
            font-size: 0.72rem;
            padding: 4px 10px;
            border-radius: 999px;
            font-weight: 600;
            white-space: nowrap;
        }
        .compare-badge.plain {
            background: #f1f5f9;
            color: #94a3b8;
        }
        .compare-badge.rec {
            background: rgba(245, 158, 11, .15);
            color: #b45309;
        }
        .hero-stats {
            display: flex;
            gap: 28px;
            margin-top: 12px;
        }
        .hero-stat {
            text-align: left;
        }
        .hero-stat .num {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }
        .hero-stat .label {
            font-size: 0.82rem;
            color: var(--muted);
            margin-top: 4px;
        }
        /* ==================== 数据栏 ==================== */
        .stats-band {
            background: var(--primary-dark);
            padding: 40px 0;
            position: relative;
            overflow: hidden;
        }
        .stats-band::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-light), var(--accent), var(--primary-light));
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stats-grid .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stats-grid .label {
            color: rgba(255, 255, 255, .7);
            font-size: 0.9rem;
            margin-top: 6px;
        }
        /* ==================== 分类卡片 ==================== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .guide-card {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all .3s ease;
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(30, 74, 138, .2);
        }
        .guide-cover {
            height: 160px;
            overflow: hidden;
            position: relative;
        }
        .guide-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .guide-card:hover .guide-cover img {
            transform: scale(1.05);
        }
        .guide-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(15, 23, 42, .3));
        }
        .guide-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, .9);
            backdrop-filter: blur(6px);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 999px;
            z-index: 2;
        }
        .guide-body {
            padding: 20px;
        }
        .guide-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        .guide-body p {
            font-size: 0.88rem;
            color: var(--muted);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .guide-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--muted);
        }
        .guide-meta i {
            color: var(--primary-light);
        }
        /* ==================== 流程 ==================== */
        .process-section {
            background: linear-gradient(180deg, #f8fafc, #eef4ff);
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .process-step {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            text-align: center;
            position: relative;
            transition: all .3s ease;
        }
        .process-step:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }
        .process-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: 16px;
            box-shadow: 0 4px 12px rgba(30, 74, 138, .25);
        }
        .process-step h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--muted);
            line-height: 1.6;
        }
        /* ==================== 精选情报 ==================== */
        .info-section {
            background: var(--surface);
        }
        .info-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .info-image {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            position: relative;
        }
        .info-image img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }
        .info-image .img-tag {
            position: absolute;
            bottom: 16px;
            left: 16px;
            background: rgba(15, 23, 42, .75);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 0.82rem;
            padding: 6px 14px;
            border-radius: 999px;
        }
        .info-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .info-item {
            display: flex;
            gap: 16px;
            padding: 20px;
            background: var(--bg);
            border-radius: 14px;
            border: 1px solid var(--border);
            transition: all .3s ease;
        }
        .info-item:hover {
            background: #fff;
            box-shadow: var(--shadow-sm);
            border-color: rgba(30, 74, 138, .2);
        }
        .info-item i {
            font-size: 1.3rem;
            color: var(--primary-light);
            margin-top: 2px;
        }
        .info-item h4 {
            font-size: 0.98rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .info-item p {
            font-size: 0.88rem;
            color: var(--muted);
            line-height: 1.6;
        }
        .info-item .info-meta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            color: #94a3b8;
            margin-top: 8px;
        }
        .info-item .info-meta i {
            font-size: 0.75rem;
        }
        /* ==================== FAQ ==================== */
        .faq-section {
            background: var(--bg);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 14px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: all .3s ease;
        }
        .faq-item:hover {
            border-color: rgba(30, 74, 138, .25);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            transition: color .2s ease;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            color: var(--primary-light);
            transition: transform .3s ease;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
            padding: 0 24px;
            color: var(--muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        /* ==================== CTA ==================== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(245, 158, 11, .1);
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 16px;
            position: relative;
        }
        .cta-section p {
            color: rgba(255, 255, 255, .8);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 32px;
            position: relative;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: #1e3a5f;
            font-weight: 700;
            padding: 16px 40px;
            border-radius: 14px;
            font-size: 1.05rem;
            box-shadow: 0 8px 30px rgba(245, 158, 11, .35);
            transition: all .3s ease;
            position: relative;
        }
        .cta-btn:hover {
            background: #fff;
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, .2);
        }
        /* ==================== FOOTER ==================== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, .7);
            padding: 64px 0 0;
        }
        .footer-main {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .logo-footer {
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, .55);
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-links h5 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-links ul li {
            margin-bottom: 10px;
        }
        .footer-links ul li a {
            color: rgba(255, 255, 255, .55);
            font-size: 0.88rem;
            transition: color .25s ease;
        }
        .footer-links ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom p {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, .4);
        }
        /* ==================== 响应式 ==================== */
        @media (max-width: 1024px) {
            .hero-grid {
                gap: 40px;
            }
            .hero-title {
                font-size: 2.4rem;
            }
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }
            .header-main {
                height: auto;
                flex-direction: column;
                padding: 16px 0;
                gap: 12px;
            }
            .nav-list {
                flex-wrap: wrap;
                justify-content: center;
            }
            .header-steps {
                display: none;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .info-layout {
                grid-template-columns: 1fr;
            }
            .info-image img {
                height: 300px;
            }
            .footer-main {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .nav-list a {
                padding: 8px 12px;
                font-size: 0.85rem;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-primary,
            .btn-outline {
                justify-content: center;
            }
            .compare-card {
                flex-wrap: wrap;
            }
        }