/* roulang page: index */
:root {
            --bg-dark: #0B0F1A;
            --bg-medium: #101626;
            --bg-card: #161D2E;
            --bg-input: #1A2135;
            --primary: #FF6A3D;
            --primary-dark: #E8542C;
            --secondary: #00BFA5;
            --text-main: #EAF0F8;
            --text-secondary: #9AA8BF;
            --text-muted: #66758F;
            --border-regular: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(255, 106, 61, 0.4);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-input: 8px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 12px 36px rgba(255, 106, 61, 0.15);
            --shadow-modal: 0 24px 64px rgba(0, 0, 0, 0.5);
            --font-head: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-num: "DIN Alternate", "Roboto", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-body);
            background: var(--bg-dark);
            color: var(--text-main);
            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,
        select,
        textarea {
            font-family: inherit;
        }

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

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        section+section {
            margin-top: 0;
        }

        section {
            padding: 64px 0;
        }

        .section-head {
            margin-bottom: 48px;
            text-align: center;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            font-family: var(--font-head);
        }

        .section-head .section-subtitle {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 12px;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
        }

        .text-primary {
            color: var(--primary) !important;
        }

        /* ===== 按钮系统 ===== */
        .btn-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border-radius: var(--radius-btn);
            border: none;
            transition: background 0.25s, box-shadow 0.25s, transform 0.15s;
            cursor: pointer;
            letter-spacing: 0.3px;
        }

        .btn-main:hover {
            background: var(--primary-dark);
            box-shadow: 0 8px 24px rgba(255, 106, 61, 0.25);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-main:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255, 255, 255, 0.7);
            transition: border-color 0.25s, transform 0.15s;
            cursor: pointer;
        }

        .btn-ghost:hover {
            border-color: var(--primary);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-ghost:active {
            transform: translateY(0);
        }

        .btn-ghost.btn-sm {
            height: 38px;
            padding: 0 16px;
            font-size: 13px;
            border-radius: 8px;
        }

        .link-more {
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            transition: text-decoration 0.2s;
        }

        .link-more:hover {
            text-decoration: underline;
        }

        /* ===== 导航栏 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: rgba(11, 15, 26, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            z-index: 1000;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
        }

        .nav-left {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 15px;
            flex-shrink: 0;
        }

        .logo-text {
            font-weight: 700;
            font-size: 17px;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
            font-family: var(--font-head);
        }

        .nav-center {
            display: flex;
            gap: 28px;
            align-items: center;
        }

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            position: relative;
            padding: 8px 0;
            transition: color 0.2s;
            white-space: nowrap;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            height: 2px;
            width: 0;
            background: var(--primary);
            transition: width 0.25s ease;
        }

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

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

        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-box {
            position: relative;
            width: 200px;
            height: 36px;
        }

        .search-box .fa-magnifying-glass {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-secondary);
            font-size: 14px;
            pointer-events: none;
        }

        .search-box input {
            width: 100%;
            height: 36px;
            background: var(--bg-input);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 8px;
            padding: 0 28px 0 36px;
            color: var(--text-main);
            font-size: 13px;
            transition: border-color 0.2s, box-shadow 0.2s;
        }

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

        .search-box input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 106, 61, 0.15);
            outline: none;
        }

        .search-kbd {
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 11px;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.08);
            border-radius: 4px;
            padding: 2px 6px;
            letter-spacing: 0.3px;
        }

        .nav-icon-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-input);
            border: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 14px;
            transition: border-color 0.2s, color 0.2s;
            cursor: pointer;
        }

        .nav-icon-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .nav-cta {
            height: 38px;
            padding: 0 16px;
            font-size: 14px;
            font-weight: 600;
            border-radius: 8px;
            white-space: nowrap;
        }

        .nav-toggle {
            display: none;
            width: 36px;
            height: 36px;
            background: var(--bg-input);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 8px;
            color: var(--text-main);
            font-size: 16px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }

        @media (max-width: 991px) {
            .nav-center {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(11, 15, 26, 0.98);
                padding: 20px 24px;
                gap: 20px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                flex-direction: column;
                align-items: flex-start;
                box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
            }

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

            .nav-toggle {
                display: flex;
            }

            .search-box {
                width: 150px;
            }
        }

        @media (max-width: 576px) {
            .search-box {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .nav-inner {
                padding: 0 16px;
            }
        }

        /* ===== Hero ===== */
        .hero-section {
            min-height: 80vh;
            display: flex;
            align-items: center;
            background:
                radial-gradient(ellipse at 80% 40%, rgba(255, 106, 61, 0.12), transparent 50%),
                linear-gradient(100deg, rgba(11, 15, 26, 0.72) 0%, rgba(11, 15, 26, 0.62) 45%, rgba(11, 15, 26, 0.4) 100%),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding-top: 64px;
            position: relative;
        }

        .hero-content {
            max-width: 620px;
        }

        .hero-title {
            font-size: 56px;
            font-weight: 700;
            color: #fff;
            line-height: 1.25;
            font-family: var(--font-head);
            letter-spacing: -0.5px;
        }

        .hero-divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
            margin: 24px 0;
        }

        .hero-subtitle {
            font-size: 16px;
            color: rgba(234, 240, 248, 0.9);
            line-height: 1.8;
            max-width: 440px;
            margin-bottom: 32px;
        }

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

        .hero-scroll {
            position: absolute;
            bottom: 24px;
            left: 50%;
            transform: translateX(-50%);
            color: rgba(255, 255, 255, 0.5);
            font-size: 18px;
            animation: floatY 2s ease-in-out infinite;
        }

        @keyframes floatY {
            0%,
            100% {
                transform: translate(-50%, 0);
            }
            50% {
                transform: translate(-50%, 6px);
            }
        }

        /* ===== 信任徽章 ===== */
        .trust-bar {
            background: rgba(11, 15, 26, 0.98);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 10px 0;
            min-height: 40px;
        }

        .trust-inner {
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .trust-badge {
            background: rgba(255, 255, 255, 0.06);
            border-radius: 999px;
            padding: 5px 16px;
            font-size: 12px;
            color: var(--text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .trust-badge::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--secondary);
            flex-shrink: 0;
        }

        /* ===== 痛点区 ===== */
        .pain-section {
            background: var(--bg-medium);
        }

        .pain-layout {
            display: flex;
            gap: 64px;
            align-items: center;
        }

        .pain-left {
            flex: 1;
        }

        .pain-right {
            flex: 0 0 340px;
            max-width: 340px;
        }

        .pain-bubble {
            background: var(--bg-card);
            border-radius: 20px;
            padding: 28px 24px;
            position: relative;
            border: 1px solid var(--border-regular);
            box-shadow: var(--shadow-card);
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-secondary);
        }

        .pain-bubble::after {
            content: "";
            position: absolute;
            left: 28px;
            bottom: -12px;
            width: 0;
            height: 0;
            border-left: 12px solid transparent;
            border-right: 12px solid transparent;
            border-top: 12px solid var(--bg-card);
        }

        .pain-bubble strong {
            color: var(--primary);
            font-weight: 600;
        }

        .section-tag {
            display: inline-block;
            background: rgba(255, 106, 61, 0.12);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            border-radius: 4px;
            padding: 4px 10px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .pain-section h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
            font-family: var(--font-head);
            margin-bottom: 32px;
        }

        .pain-points {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-top: 8px;
        }

        .pain-point {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .pain-point::before {
            content: "";
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            flex-shrink: 0;
        }

        /* ===== 方案卡片 ===== */
        .solutions-section {
            background: var(--bg-dark);
        }

        .solution-card {
            background: var(--bg-card);
            border: 1px solid var(--border-regular);
            border-radius: var(--radius-card);
            padding: 28px 20px;
            position: relative;
            height: 100%;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .solution-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-hover);
        }

        .solution-num {
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 13px;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.25);
            font-family: var(--font-num);
        }

        .solution-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(255, 106, 61, 0.12);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
            transition: background 0.3s;
        }

        .solution-card:hover .solution-icon {
            background: rgba(255, 106, 61, 0.2);
        }

        .solution-card h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
            color: #fff;
            font-family: var(--font-head);
        }

        .solution-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 数据区 ===== */
        .stats-section {
            background: var(--bg-medium);
        }

        .stats-img {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .stats-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .stats-img-overlay {
            position: absolute;
            bottom: 16px;
            left: 16px;
            right: 16px;
            background: rgba(11, 15, 26, 0.82);
            backdrop-filter: blur(6px);
            border-radius: 12px;
            padding: 14px 16px;
            font-size: 13px;
            color: rgba(234, 240, 248, 0.9);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-top: 32px;
        }

        .stat-item {
            background: var(--bg-card);
            border: 1px solid var(--border-regular);
            border-radius: 16px;
            padding: 28px 16px;
            text-align: center;
            transition: transform 0.3s, border-color 0.3s;
        }

        .stat-item:hover {
            transform: translateY(-3px);
            border-color: var(--border-hover);
        }

        .stat-num {
            font-family: var(--font-num);
            font-size: 52px;
            font-weight: 700;
            color: var(--secondary);
            line-height: 1.2;
        }

        .stat-line {
            width: 32px;
            height: 2px;
            background: var(--primary);
            margin: 16px auto 0;
        }

        .stat-desc {
            margin-top: 12px;
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ===== CTA 区块 ===== */
        .cta-section {
            background:
                linear-gradient(rgba(11, 15, 26, 0.86), rgba(11, 15, 26, 0.9)),
                url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            text-align: center;
            position: relative;
        }

        .cta-section h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            font-family: var(--font-head);
            line-height: 1.4;
        }

        .cta-section .cta-desc {
            font-size: 15px;
            color: rgba(234, 240, 248, 0.85);
            max-width: 400px;
            margin: 16px auto 32px;
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 资讯列表 ===== */
        .news-section {
            background: var(--bg-dark);
        }

        .news-card {
            display: block;
            background: var(--bg-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
            border: 1px solid rgba(255, 255, 255, 0.04);
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-hover);
        }

        .news-thumb {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-input);
            position: relative;
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .news-body {
            padding: 20px;
        }

        .news-cat {
            display: inline-block;
            height: 22px;
            line-height: 20px;
            padding: 0 10px;
            border: 1px solid var(--primary);
            border-radius: 999px;
            font-size: 12px;
            color: var(--primary);
            margin-bottom: 12px;
            white-space: nowrap;
        }

        .news-body h3 {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.5;
            color: #fff;
            font-family: var(--font-head);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
            min-height: 48px;
        }

        .news-body p.news-summary {
            font-size: 13px;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .news-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 16px;
            padding-top: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .news-meta .meta-time {
            font-size: 12px;
            color: var(--text-muted);
        }

        .news-meta .read-more {
            color: var(--primary);
            font-size: 13px;
        }

        .empty-state {
            text-align: center;
            padding: 48px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-card);
            border: 1px dashed var(--border-hover);
            color: var(--text-secondary);
            font-size: 14px;
            max-width: 520px;
            margin: 0 auto;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-medium);
        }

        .faq-accordion {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-regular);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.3s;
        }

        .faq-accordion .accordion-item:hover {
            border-color: rgba(255, 106, 61, 0.25);
        }

        .faq-accordion .accordion-button {
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 16px 24px;
            font-family: var(--font-head);
            box-shadow: none;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(255, 106, 61, 0.04);
            color: #fff;
            box-shadow: none;
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }

        .faq-accordion .accordion-button::after {
            background-image: none;
            font-family: "Font Awesome 6 Free";
            content: "\2b";
            font-weight: 900;
            font-size: 16px;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            content: "\f068";
            font-weight: 900;
            color: var(--primary);
        }

        .faq-accordion .accordion-body {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.75;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding-top: 16px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #080B13;
            padding: 72px 0 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand .logo-text {
            font-size: 20px;
        }

        .footer-desc {
            color: var(--text-secondary);
            font-size: 13px;
            margin-top: 16px;
            max-width: 280px;
            line-height: 1.75;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            font-family: var(--font-head);
        }

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

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: var(--text-secondary);
            font-size: 14px;
            transition: color 0.2s;
        }

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

        .contact-line {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .contact-line i {
            color: var(--primary);
            font-size: 14px;
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            text-align: center;
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== Modal ===== */
        .modal-content {
            background: var(--bg-card);
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: var(--shadow-modal);
        }

        .modal-header {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 32px 16px;
        }

        .modal-title {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            font-family: var(--font-head);
        }

        .btn-close {
            background: transparent;
            opacity: 1;
            width: 28px;
            height: 28px;
            font-size: 28px;
            line-height: 28px;
            color: #fff;
            position: relative;
            padding: 0;
        }

        .btn-close::before {
            content: "×";
            color: #fff;
            font-size: 24px;
            line-height: 28px;
            font-weight: 300;
        }

        .btn-close:hover {
            opacity: 0.7;
        }

        .modal-body {
            padding: 24px 32px 32px;
        }

        .modal-body .form-label {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .form-control,
        .form-select {
            background: var(--bg-input);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-input);
            height: 44px;
            color: var(--text-main);
            padding: 0 14px;
            font-size: 14px;
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .form-control::placeholder {
            color: var(--text-muted);
        }

        .form-control:focus,
        .form-select:focus {
            background: var(--bg-input);
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 106, 61, 0.15);
            color: var(--text-main);
        }

        .form-select option {
            background: var(--bg-card);
            color: var(--text-main);
        }

        .btn-submit {
            width: 100%;
            height: 46px;
            margin-top: 8px;
        }

        .privacy-note {
            margin-top: 16px;
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
            line-height: 1.5;
        }

        .privacy-note a {
            color: var(--text-secondary);
            text-decoration: underline;
        }

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

        /* ===== 响应式 ===== */
        @media (max-width: 1199px) {
            .search-box {
                width: 150px;
            }

            .nav-center {
                gap: 20px;
            }
        }

        @media (max-width: 767px) {
            section {
                padding: 48px 0;
            }

            .container-custom {
                padding: 0 16px;
            }

            .hero-section {
                min-height: 90vh;
                justify-content: center;
                text-align: center;
            }

            .hero-content {
                max-width: 100%;
                margin: 0 auto;
            }

            .hero-title {
                font-size: 36px;
            }

            .hero-divider {
                margin: 20px auto;
            }

            .hero-subtitle {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
                font-size: 15px;
            }

            .hero-actions {
                justify-content: center;
            }

            .btn-main,
            .btn-ghost {
                width: 100%;
                max-width: 280px;
            }

            .section-head h2 {
                font-size: 26px;
            }

            .pain-layout {
                flex-direction: column;
                gap: 32px;
            }

            .pain-right {
                flex: 1 1 auto;
                max-width: 100%;
                width: 100%;
            }

            .pain-right .pain-bubble {
                max-width: 100%;
            }

            .stats-grid {
                gap: 16px;
            }

            .stat-num {
                font-size: 36px;
            }

            .cta-section h2 {
                font-size: 26px;
            }

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

            .footer-bottom {
                text-align: left;
                font-size: 12px;
            }

            .modal-body {
                padding: 20px 20px 24px;
            }

            .modal-header {
                padding: 20px 20px 12px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 30px;
            }

            .trust-inner {
                gap: 8px;
                padding: 0 16px;
            }

            .trust-badge {
                padding: 4px 12px;
                font-size: 11px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .stat-item {
                padding: 20px 12px;
            }

            .stat-num {
                font-size: 30px;
            }

            .stat-desc {
                font-size: 12px;
            }

            .news-body {
                padding: 16px;
            }
        }

/* roulang page: article */
:root {
            --bg-deep: #0B0F1A;
            --bg-panel: #101626;
            --bg-card: #161D2E;
            --bg-input: #1A2135;
            --primary: #FF6A3D;
            --primary-deep: #E8542C;
            --primary-glow: rgba(255, 106, 61, 0.15);
            --secondary: #00BFA5;
            --text-main: #EAF0F8;
            --text-sub: #9AA8BF;
            --text-weak: #66758F;
            --border-soft: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(255, 106, 61, 0.4);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-input: 8px;
            --radius-img: 12px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 12px 36px rgba(255, 106, 61, 0.15);
            --shadow-modal: 0 24px 64px rgba(0, 0, 0, 0.5);
            --paper-bg: #FCFAF7;
            --paper-text: #222A36;
            --paper-sub: #5A667A;
            --font-cn: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-num: "DIN Alternate", "Roboto", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-cn);
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            background: var(--bg-deep);
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 767px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: 64px;
            background: rgba(11, 15, 26, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .nav-inner {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        @media (max-width: 767px) {
            .nav-inner {
                padding: 0 16px;
            }
        }

        .nav-left {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary) 0%, #FF8A5C 60%, var(--secondary) 120%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            box-shadow: 0 4px 16px rgba(255, 106, 61, 0.3);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-center {
            display: flex;
            align-items: center;
            gap: 28px;
            margin: 0 auto;
        }

        .nav-link {
            position: relative;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            padding: 6px 0;
            white-space: nowrap;
            transition: color 0.2s ease;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: center;
            transition: transform 0.25s ease;
        }

        .nav-link:hover {
            color: #fff;
        }

        .nav-link:hover::after {
            transform: scaleX(1);
        }

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

        .nav-link.active::after {
            transform: scaleX(1);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            width: 180px;
            height: 36px;
            background: var(--bg-input);
            border: 1px solid transparent;
            border-radius: 8px;
            padding: 0 10px;
            gap: 8px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .search-box i {
            font-size: 13px;
            color: var(--text-weak);
        }

        .search-box input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-main);
            font-size: 13px;
            min-width: 0;
        }

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

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 106, 61, 0.12);
        }

        .search-kbd {
            font-size: 11px;
            color: var(--text-weak);
            background: rgba(255, 255, 255, 0.08);
            padding: 2px 7px;
            border-radius: 6px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            white-space: nowrap;
        }

        .nav-icon-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-input);
            border: none;
            color: var(--text-sub);
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
            border: 1px solid transparent;
        }

        .nav-icon-btn:hover {
            background: var(--bg-card);
            color: var(--primary);
            border-color: var(--border-hover);
        }

        .btn-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border: none;
            border-radius: 10px;
            cursor: pointer;
            transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
        }

        .btn-main:hover {
            background: var(--primary-deep);
            box-shadow: 0 8px 24px rgba(255, 106, 61, 0.25);
            color: #fff;
        }

        .btn-main:active {
            transform: translateY(2px);
        }

        .btn-main-sm {
            height: 38px;
            padding: 0 18px;
            font-size: 14px;
            border-radius: 8px;
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            background: transparent;
            color: #fff;
            font-size: 14px;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.5);
            border-radius: 10px;
            cursor: pointer;
            transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
        }

        .btn-ghost:hover {
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 0 0 3px rgba(255, 106, 61, 0.12);
        }

        .btn-ghost:active {
            transform: translateY(2px);
        }

        .nav-toggle {
            display: none;
            width: 36px;
            height: 36px;
            background: var(--bg-input);
            border: 1px solid var(--border-soft);
            border-radius: 8px;
            color: var(--text-main);
            font-size: 16px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }

        @media (max-width: 991px) {
            .search-box {
                width: 40px;
                padding: 0;
                justify-content: center;
            }

            .search-box input,
            .search-box .search-kbd {
                display: none;
            }

            .search-box i {
                font-size: 16px;
                color: var(--text-sub);
            }
        }

        @media (max-width: 767px) {
            .nav-toggle {
                display: flex;
            }

            .nav-center {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-deep);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-soft);
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
            }

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

            .nav-center .nav-link {
                padding: 12px 8px;
                font-size: 15px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            }

            .nav-center .nav-link:last-child {
                border-bottom: none;
            }

            .nav-center .nav-link::after {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .nav-icon-btn {
                display: none;
            }
        }

        .site-footer {
            background: #080B13;
            padding: 72px 0 40px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 48px;
        }

        @media (max-width: 991px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 575px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        .footer-desc {
            font-size: 13px;
            color: var(--text-sub);
            margin-top: 16px;
            max-width: 260px;
            line-height: 1.7;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            font-size: 14px;
            color: var(--text-sub);
            transition: color 0.2s ease;
        }

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

        .contact-line {
            font-size: 14px;
            color: var(--text-sub);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .contact-line i {
            color: var(--primary);
            font-size: 14px;
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            margin-top: 56px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 12px;
            color: var(--text-weak);
        }

        .site-footer .logo-text {
            font-size: 18px;
        }

        /* ====== 文章页专属 ====== */
        .article-hero-band {
            padding: 48px 0;
            background: linear-gradient(135deg, #1A1408 0%, var(--bg-deep) 60%, var(--bg-panel) 100%);
            border-bottom: 1px solid var(--border-soft);
        }

        .article-hero-inner {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .article-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 106, 61, 0.12);
            border: 1px solid rgba(255, 106, 61, 0.3);
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 12px;
            color: var(--primary);
            font-weight: 500;
            letter-spacing: 0.04em;
        }

        .article-hero-title {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-top: 18px;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        @media (max-width: 767px) {
            .article-hero-title {
                font-size: 26px;
            }
        }

        .article-hero-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-sub);
            flex-wrap: wrap;
        }

        .article-hero-meta i {
            color: var(--primary);
            margin-right: 4px;
        }

        .breadcrumb-nav {
            max-width: 1280px;
            margin: 0 auto;
            padding: 18px 24px 0;
            font-size: 13px;
            color: var(--text-weak);
        }

        @media (max-width: 767px) {
            .breadcrumb-nav {
                padding: 16px 16px 0;
                font-size: 12px;
            }
        }

        .breadcrumb-nav a {
            color: rgba(255, 106, 61, 0.75);
            transition: color 0.2s ease;
        }

        .breadcrumb-nav a:hover {
            color: var(--primary);
            text-decoration: underline;
        }

        .breadcrumb-nav .sep {
            margin: 0 8px;
            color: var(--text-weak);
            opacity: 0.6;
        }

        .breadcrumb-nav .current {
            color: var(--text-weak);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 260px;
            vertical-align: bottom;
            display: inline-block;
        }

        .article-main {
            background: var(--paper-bg);
            padding: 64px 0;
        }

        .article-container {
            max-width: 720px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 767px) {
            .article-main {
                padding: 40px 0;
            }

            .article-container {
                padding: 0 16px;
            }
        }

        .article-content {
            color: var(--paper-text);
            font-size: 16px;
            line-height: 1.9;
        }

        .article-content p {
            margin-bottom: 24px;
        }

        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: #1A2230;
            border-left: 4px solid var(--primary);
            padding-left: 14px;
            margin-top: 40px;
            margin-bottom: 20px;
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 18px;
            font-weight: 600;
            color: #1A2230;
            margin-top: 32px;
            margin-bottom: 16px;
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: #FFF5F0;
            border-radius: 8px;
            padding: 20px 24px;
            margin: 32px 0;
            color: #4A5568;
            font-style: normal;
        }

        .article-content img {
            border-radius: 12px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
            margin: 32px auto;
        }

        .article-content ul {
            padding-left: 20px;
            margin-bottom: 24px;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        .article-content a:hover {
            color: var(--primary-deep);
        }

        .article-image-placeholder {
            width: 100%;
            aspect-ratio: 16 / 9;
            border-radius: 12px;
            margin: 32px 0;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
        }

        .article-image-placeholder img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            margin: 0;
            border-radius: 12px;
        }

        .article-not-found {
            text-align: center;
            padding: 80px 0;
            color: var(--paper-sub);
        }

        .article-not-found h2 {
            font-size: 28px;
            color: #1A2230;
            margin-bottom: 12px;
            border: none;
        }

        .article-not-found p {
            margin-bottom: 24px;
        }

        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 40px;
            padding: 0 20px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            background: transparent;
            color: #fff;
            font-size: 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: border-color 0.2s ease, background 0.2s ease;
        }

        .btn-back:hover {
            border-color: var(--primary);
            background: rgba(255, 106, 61, 0.08);
        }

        .btn-back-light {
            border-color: rgba(34, 42, 54, 0.35);
            color: #222A36;
        }

        .btn-back-light:hover {
            border-color: var(--primary);
            background: rgba(255, 106, 61, 0.08);
            color: #222A36;
        }

        .related-section {
            padding: 64px 0 80px;
            background: var(--bg-panel);
        }

        .related-title {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            text-align: center;
            margin-bottom: 40px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            max-width: 900px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 991px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                max-width: 700px;
            }
        }

        @media (max-width: 575px) {
            .related-grid {
                grid-template-columns: 1fr;
                padding: 0 16px;
            }
        }

        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            border: 1px solid var(--border-soft);
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-hover);
        }

        .related-thumb {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-input);
        }

        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .related-card:hover .related-thumb img {
            transform: scale(1.05);
        }

        .related-thumb-placeholder {
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            color: rgba(255, 255, 255, 0.15);
        }

        .related-body {
            padding: 20px;
        }

        .related-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            line-height: 1.5;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-body .time {
            font-size: 12px;
            color: var(--text-weak);
        }

        .related-body .time i {
            color: var(--primary);
            margin-right: 6px;
        }

        .back-to-home {
            text-align: center;
            padding: 16px 0 0;
            background: var(--bg-panel);
        }

        .modal-content {
            border-radius: 20px;
            background: var(--bg-panel);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-modal);
            max-width: 420px;
            margin: 0 auto;
            padding: 32px;
        }

        .modal-header {
            border-bottom: none;
            padding: 0;
            position: relative;
        }

        .modal-title {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
        }

        .modal-body {
            padding: 24px 0 0;
        }

        .modal-body .form-label {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .modal-body .form-control,
        .modal-body .form-select {
            width: 100%;
            height: 44px;
            background: var(--bg-input);
            border: 1px solid #2B3550;
            border-radius: 8px;
            color: var(--text-main);
            font-size: 14px;
            padding: 0 14px;
            margin-bottom: 20px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .modal-body .form-control:focus,
        .modal-body .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 106, 61, 0.15);
            outline: none;
            background: var(--bg-input);
            color: var(--text-main);
        }

        .modal-body .btn-main {
            width: 100%;
            height: 46px;
        }

        .modal-body .form-select option {
            background: var(--bg-input);
            color: var(--text-main);
        }

        .privacy-note {
            font-size: 12px;
            color: var(--text-weak);
            margin-top: 16px;
            text-align: center;
        }

        .privacy-note a {
            color: var(--text-weak);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

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

        .btn-close-custom {
            position: absolute;
            right: 0;
            top: 0;
            width: 32px;
            height: 32px;
            background: transparent;
            border: none;
            font-size: 22px;
            color: rgba(255, 255, 255, 0.5);
            cursor: pointer;
            line-height: 1;
            transition: color 0.2s ease, transform 0.2s ease;
        }

        .btn-close-custom:hover {
            color: var(--primary);
            transform: rotate(90deg);
        }

        @media (max-width: 767px) {
            .modal-content {
                margin: 0 16px;
                padding: 24px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-dark: #0B0F1A;
            --bg-soft: #101626;
            --card-bg: #161D2E;
            --input-bg: #1A2135;
            --primary: #FF6A3D;
            --primary-dark: #E8542C;
            --secondary: #00BFA5;
            --text-main: #EAF0F8;
            --text-sub: #9AA8BF;
            --text-weak: #66758F;
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(255, 106, 61, 0.4);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-input: 8px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 12px 36px rgba(255, 106, 61, 0.15);
            --shadow-modal: 0 24px 64px rgba(0, 0, 0, 0.5);
            --font-main: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-num: "DIN Alternate", "Roboto", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-main);
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s;
        }

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

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

        button {
            font-family: var(--font-main);
        }

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 按钮系统 ===== */
        .btn-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            border: none;
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: all 0.2s ease;
            text-decoration: none;
            white-space: nowrap;
            line-height: 1;
        }

        .btn-main:hover {
            background: var(--primary-dark);
            box-shadow: 0 8px 24px rgba(255, 106, 61, 0.25);
            color: #fff;
        }

        .btn-main:active {
            transform: translateY(2px);
        }

        .btn-main:focus-visible,
        .btn-ghost:focus-visible,
        .nav-icon-btn:focus-visible,
        .nav-toggle:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.55);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: all 0.2s ease;
            text-decoration: none;
            white-space: nowrap;
            line-height: 1;
        }

        .btn-ghost:hover {
            border-color: var(--primary);
            color: #fff;
            background: rgba(255, 106, 61, 0.06);
        }

        .btn-sm {
            height: 38px;
            padding: 0 16px;
            font-size: 14px;
            border-radius: 8px;
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 64px;
            background: rgba(11, 15, 26, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .nav-inner {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .nav-left {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 24px;
            height: 24px;
            border-radius: 8px;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .nav-center {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-link {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            position: relative;
            padding: 6px 0;
            font-weight: 500;
            transition: color 0.2s;
            white-space: nowrap;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width 0.2s ease;
            border-radius: 2px;
        }

        .nav-link:hover {
            color: #fff;
        }

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

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

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

        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-box {
            width: 180px;
            height: 36px;
            background: var(--input-bg);
            border-radius: var(--radius-input);
            display: flex;
            align-items: center;
            padding: 0 12px;
            gap: 8px;
            border: 1px solid transparent;
            transition: border-color 0.2s, box-shadow 0.2s;
            cursor: text;
        }

        .search-box i {
            color: var(--text-weak);
            font-size: 13px;
            flex-shrink: 0;
        }

        .search-box input {
            flex: 1;
            border: none;
            outline: none;
            background: transparent;
            color: var(--text-main);
            font-size: 13px;
            min-width: 0;
            width: 100%;
        }

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

        .search-box .search-kbd {
            font-size: 11px;
            color: var(--text-weak);
            background: rgba(255, 255, 255, 0.06);
            padding: 2px 6px;
            border-radius: 4px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 106, 61, 0.15);
        }

        .nav-icon-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--input-bg);
            border: 1px solid transparent;
            color: var(--text-sub);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s ease;
            font-size: 14px;
        }

        .nav-icon-btn:hover {
            color: var(--primary);
            border-color: var(--border-hover);
            background: rgba(255, 106, 61, 0.08);
        }

        .nav-cta {
            height: 38px;
            padding: 0 16px;
            border-radius: 8px;
            font-size: 14px;
        }

        .nav-toggle {
            width: 36px;
            height: 36px;
            background: var(--input-bg);
            border: 1px solid var(--border);
            border-radius: 8px;
            color: #fff;
            font-size: 15px;
            display: none;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s;
        }

        .nav-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* ===== 分类页 Hero ===== */
        .cat-hero {
            position: relative;
            min-height: 76vh;
            display: flex;
            align-items: center;
            padding: 140px 0 80px;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
        }

        .cat-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(11, 15, 26, 0.68);
        }

        .cat-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(900px 420px at 25% 40%, rgba(255, 106, 61, 0.12), transparent 70%);
        }

        .cat-hero-content {
            position: relative;
            z-index: 2;
            max-width: 1280px;
            margin: 0 auto;
            width: 100%;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-sub);
            margin-bottom: 28px;
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: rgba(255, 106, 61, 0.75);
            transition: color 0.2s;
        }

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

        .breadcrumb-nav .sep {
            color: var(--text-weak);
        }

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

        .cat-hero h1 {
            font-size: 56px;
            font-weight: 700;
            line-height: 1.2;
            color: #fff;
            margin: 0 0 16px;
            letter-spacing: 1px;
        }

        .cat-hero h1 .accent {
            color: var(--primary);
        }

        .cat-hero-sub {
            font-size: 17px;
            color: var(--text-sub);
            line-height: 1.7;
            max-width: 520px;
            margin: 0 0 32px;
        }

        .cat-hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }

        .trust-badges {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .badge-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 999px;
            padding: 6px 14px;
            font-size: 12px;
            color: var(--text-sub);
            line-height: 1;
        }

        .badge-pill i {
            color: var(--primary);
            font-size: 12px;
        }

        /* ===== 区块通用 ===== */
        .guide-overview,
        .scope-section,
        .faq-section {
            background: var(--bg-dark);
            padding: 96px 0 64px;
        }

        .feature-section,
        .process-section,
        .recommend-section,
        .cta-section {
            background: var(--bg-soft);
            padding: 96px 0 64px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(255, 106, 61, 0.1);
            border: 1px solid rgba(255, 106, 61, 0.25);
            border-radius: 999px;
            padding: 4px 14px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .section-head {
            margin-bottom: 48px;
        }

        .section-head h2,
        .guide-overview h2,
        .scope-section h2,
        .cta-section h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin: 0 0 12px;
        }

        .section-head p {
            color: var(--text-sub);
            font-size: 15px;
            max-width: 560px;
            margin: 0;
            line-height: 1.7;
        }

        .section-head.text-center p {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 图文介绍 ===== */
        .guide-overview .lead-text {
            font-size: 17px;
            color: var(--text-main);
            line-height: 1.8;
            margin-bottom: 16px;
            font-weight: 500;
        }

        .guide-overview p {
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .guide-overview .check-list {
            list-style: none;
            padding: 0;
            margin: 24px 0 0;
        }

        .guide-overview .check-list li {
            position: relative;
            padding-left: 22px;
            color: var(--text-main);
            font-size: 14px;
            line-height: 1.8;
        }

        .guide-overview .check-list li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 12px;
            width: 10px;
            height: 10px;
            background: var(--secondary);
            border-radius: 50%;
        }

        .overview-image-wrap {
            position: relative;
        }

        .overview-image-wrap img {
            border-radius: 20px;
            box-shadow: var(--shadow-card);
            width: 100%;
            object-fit: cover;
        }

        .floating-card {
            position: absolute;
            bottom: 24px;
            left: 24px;
            background: rgba(11, 15, 26, 0.92);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 14px 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(8px);
        }

        .floating-card i {
            color: var(--primary);
            font-size: 18px;
        }

        .floating-card span {
            font-size: 13px;
            color: var(--text-main);
            font-weight: 500;
        }

        /* ===== 特色卡片 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            position: relative;
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
        }

        .feature-num {
            position: absolute;
            top: 16px;
            right: 18px;
            font-size: 14px;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.12);
            font-family: var(--font-num);
        }

        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: rgba(255, 106, 61, 0.12);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 18px;
        }

        .feature-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 10px;
            line-height: 1.4;
        }

        .feature-card p {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }

        /* ===== 内容范围错位区 ===== */
        .scope-wrap {
            align-items: center;
        }

        .scope-wrap h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .scope-wrap>div>p {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .scope-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .scope-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            display: flex;
            gap: 16px;
            transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
        }

        .scope-item:hover {
            border-color: var(--border-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .scope-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(0, 191, 165, 0.1);
            color: var(--secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            flex-shrink: 0;
        }

        .scope-info h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 6px;
        }

        .scope-info p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
            margin: 0;
        }

        /* ===== 流程 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }

        .process-step {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            text-align: center;
            position: relative;
            transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
        }

        .process-step:hover {
            transform: translateY(-4px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
        }

        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--primary);
            color: #fff;
            font-family: var(--font-num);
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
        }

        .process-step h3 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 10px;
        }

        .process-step p {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            margin-top: 8px;
        }

        .faq-item {
            background: var(--bg-soft);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.25s, background 0.25s;
        }

        .faq-item:hover {
            background: var(--card-bg);
            border-color: rgba(255, 255, 255, 0.12);
        }

        .faq-item.active {
            border-color: var(--border-hover);
        }

        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            color: var(--text-main);
            font-size: 15px;
            font-weight: 600;
            text-align: left;
            line-height: 1.5;
            transition: color 0.2s;
        }

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

        .faq-icon {
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 14px;
            flex-shrink: 0;
        }

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

        .faq-item.active .faq-answer {
            max-height: 300px;
        }

        .faq-answer p {
            padding: 0 20px 20px;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.8;
            margin: 0;
        }

        /* ===== 推荐卡片 ===== */
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            display: block;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            padding: 12px 12px 20px;
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .news-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
        }

        .card-thumb {
            aspect-ratio: 16 / 9;
            border-radius: 12px;
            overflow: hidden;
            background: var(--input-bg);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 8px 8px;
        }

        .card-cat {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            border: 1px solid rgba(255, 106, 61, 0.4);
            background: rgba(255, 106, 61, 0.06);
            padding: 2px 8px;
            border-radius: 999px;
            line-height: 1.4;
            height: 22px;
        }

        .card-time {
            font-size: 12px;
            color: var(--text-weak);
            line-height: 1.4;
        }

        .news-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            line-height: 1.5;
            margin: 0;
            padding: 0 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 48px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 100px 0;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(11, 15, 26, 0.82);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
        }

        .cta-content p {
            color: var(--text-sub);
            font-size: 16px;
            line-height: 1.8;
            margin: 0 auto 32px;
            max-width: 560px;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #080B13;
            padding: 72px 0 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-brand .logo-text {
            font-size: 18px;
        }

        .footer-desc {
            color: var(--text-sub);
            font-size: 13px;
            line-height: 1.8;
            margin: 16px 0 0;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 16px;
        }

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

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: var(--text-sub);
            text-decoration: none;
            transition: color 0.2s;
        }

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

        .contact-line {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 10px;
            line-height: 1.6;
        }

        .contact-line i {
            color: var(--primary);
            font-size: 13px;
            width: 16px;
            text-align: center;
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            text-align: center;
            font-size: 12px;
            color: var(--text-weak);
        }

        /* ===== 模态框 ===== */
        .modal-content {
            border-radius: 20px;
            background: var(--bg-soft);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-modal);
            max-width: 420px;
            margin: 0 auto;
            padding: 32px;
        }

        .modal-header {
            border-bottom: none;
            padding: 0 0 20px;
            position: relative;
        }

        .modal-title {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
        }

        .modal-header .btn-close {
            filter: invert(1);
            background: transparent;
            font-size: 14px;
            opacity: 0.7;
            border: none;
            padding: 8px;
            line-height: 1;
        }

        .modal-body {
            padding: 0;
        }

        .form-label {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .form-control {
            background: var(--input-bg);
            border: 1px solid #2B3550;
            border-radius: 8px;
            height: 44px;
            color: var(--text-main);
            font-size: 14px;
            padding: 0 14px;
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .form-control:focus {
            background: var(--input-bg);
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 106, 61, 0.15);
            color: var(--text-main);
        }

        .form-select {
            background-color: var(--input-bg);
            border: 1px solid #2B3550;
            border-radius: 8px;
            height: 44px;
            color: var(--text-main);
            font-size: 14px;
        }

        .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 106, 61, 0.15);
        }

        .form-select option {
            background: var(--bg-soft);
            color: var(--text-main);
        }

        .modal-footer {
            border-top: none;
            padding: 16px 0 0;
            flex-direction: column;
            gap: 12px;
        }

        .modal-footer .btn-main {
            width: 100%;
            height: 46px;
        }

        .privacy-note {
            font-size: 12px;
            color: var(--text-weak);
            text-align: center;
            line-height: 1.6;
        }

        .privacy-note a {
            color: var(--text-sub);
            text-decoration: underline;
            font-size: 12px;
        }

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

        .modal-backdrop.show {
            opacity: 0.8;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199px) {
            .feature-grid {
                grid-template-columns: repeat(3, 1fr);
            }

            .process-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 16px;
            }

            .scope-list {
                grid-template-columns: 1fr 1fr;
            }

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

        @media (max-width: 991px) {
            .nav-center {
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(11, 15, 26, 0.98);
                flex-direction: column;
                align-items: flex-start;
                padding: 12px 24px 20px;
                display: none;
                border-bottom: 1px solid var(--border);
            }

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

            .nav-center .nav-link {
                padding: 10px 0;
                width: 100%;
            }

            .nav-toggle {
                display: flex;
            }

            .search-box {
                width: 36px;
                justify-content: center;
                padding: 0;
            }

            .search-box input,
            .search-box .search-kbd {
                display: none;
            }

            .cat-hero {
                min-height: 70vh;
                padding: 120px 0 60px;
            }

            .cat-hero h1 {
                font-size: 44px;
            }

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

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

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

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

        @media (max-width: 767px) {
            .container-custom {
                padding: 0 16px;
            }

            .nav-inner {
                padding: 0 16px;
            }

            .nav-right .search-box {
                display: none;
            }

            .nav-cta {
                padding: 0 12px;
                font-size: 13px;
            }

            .cat-hero {
                min-height: auto;
                padding: 110px 0 50px;
                text-align: center;
            }

            .cat-hero h1 {
                font-size: 32px;
            }

            .cat-hero-sub {
                font-size: 15px;
                margin-left: auto;
                margin-right: auto;
            }

            .cat-hero-actions {
                justify-content: center;
                flex-direction: column;
                align-items: stretch;
                max-width: 320px;
                margin-left: auto;
                margin-right: auto;
            }

            .cat-hero-actions .btn-main,
            .cat-hero-actions .btn-ghost {
                width: 100%;
            }

            .trust-badges {
                justify-content: center;
            }

            .guide-overview,
            .feature-section,
            .scope-section,
            .process-section,
            .faq-section,
            .recommend-section,
            .cta-section {
                padding: 64px 0 48px;
            }

            .section-head h2,
            .guide-overview h2,
            .scope-section h2,
            .cta-content h2 {
                font-size: 26px;
            }

            .feature-grid,
            .process-grid,
            .recommend-grid {
                grid-template-columns: 1fr;
            }

            .scope-list {
                grid-template-columns: 1fr;
            }

            .cta-content p {
                font-size: 15px;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }

            .cta-buttons .btn-main,
            .cta-buttons .btn-ghost {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-desc {
                max-width: 100%;
            }

            .breadcrumb-nav {
                justify-content: center;
            }

            .breadcrumb-nav a:first-child {
                display: none;
            }

            .breadcrumb-nav .sep:first-of-type {
                display: none;
            }

            .floating-card {
                left: 12px;
                bottom: 12px;
                padding: 10px 14px;
            }
        }

        @media (max-width: 520px) {
            .nav-right .nav-icon-btn {
                display: none;
            }

            .nav-cta {
                height: 36px;
                padding: 0 10px;
                font-size: 13px;
            }

            .cat-hero h1 {
                font-size: 28px;
                letter-spacing: 0.5px;
            }

            .badge-pill {
                padding: 5px 10px;
                font-size: 11px;
            }
        }