/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --primary: #7BA7C3;
            --primary-dark: #3D6B8F;
            --primary-light: #A8C6D9;
            --accent: #D9A441;
            --accent-dark: #C08E32;
            --bg: #F7FAFC;
            --white: #FFFFFF;
            --text-dark: #1B2A3B;
            --text-body: #4A6277;
            --text-light: #8FA3B8;
            --border: rgba(123, 167, 195, 0.2);
            --border-solid: rgba(123, 167, 195, 0.35);
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 8px 24px rgba(27, 42, 59, 0.06);
            --shadow-hover: 0 12px 32px rgba(27, 42, 59, 0.12);
            --transition: all 0.3s ease;
            --container: 1200px;
            --font-family: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-family);
            background-color: var(--bg);
            color: var(--text-body);
            font-size: 16px;
            line-height: 1.8;
            overflow-x: hidden;
        }

        img { max-width: 100%; display: block; }
        a { text-decoration: none; color: var(--primary); transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        ul, ol { list-style: none; }
        input, textarea, select, button { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            border: 1px solid transparent;
            transition: var(--transition);
            text-align: center;
            white-space: nowrap;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(123, 167, 195, 0.35);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .btn-outline {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: rgba(123, 167, 195, 0.1);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .btn-outline:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .btn-accent {
            background-color: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            background-color: var(--accent-dark);
            color: #fff;
        }

        .btn-block { width: 100%; }

        /* ========== 徽章 / 标签 ========== */
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 4px;
            background: rgba(168, 198, 217, 0.28);
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 600;
            line-height: 1.5;
            letter-spacing: 0.3px;
        }
        .badge::before {
            content: "";
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
            margin-right: 6px;
            vertical-align: middle;
        }

        /* ========== Header / 导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 16px 24px 0;
            pointer-events: none;
        }

        .nav-panel {
            max-width: var(--container);
            margin: 0 auto;
            background: var(--white);
            border-radius: 16px;
            box-shadow: 0 4px 24px rgba(27, 42, 59, 0.08);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 20px;
            pointer-events: auto;
            transition: var(--transition);
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            box-shadow: 0 4px 10px rgba(123, 167, 195, 0.3);
        }
        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: 0.5px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            margin: 0 16px;
        }

        .nav-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            background: rgba(168, 198, 217, 0.16);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-item i {
            font-size: 14px;
            color: var(--primary);
            transition: var(--transition);
        }
        .nav-item:hover {
            background: rgba(168, 198, 217, 0.3);
            color: var(--text-dark);
        }
        .nav-item.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 3px 10px rgba(123, 167, 195, 0.3);
        }
        .nav-item.active i { color: #fff; }
        .nav-item:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .nav-cta {
            padding: 10px 22px;
            font-size: 14px;
            flex-shrink: 0;
        }

        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: rgba(168, 198, 217, 0.2);
            color: var(--text-dark);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        .hamburger:hover { background: rgba(168, 198, 217, 0.4); }

        .mobile-menu {
            display: none;
            max-width: var(--container);
            margin: 8px auto 0;
            background: var(--white);
            border-radius: 16px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            padding: 16px;
            pointer-events: auto;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
        }
        .mobile-menu .nav-item {
            justify-content: center;
            text-align: center;
        }
        .mobile-menu .btn { grid-column: 1 / -1; margin-top: 6px; }

        .mobile-menu.open { display: grid; animation: mobileMenuIn 0.25s ease; }

        @keyframes mobileMenuIn {
            from { opacity: 0; transform: translateY(-8px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* ========== Hero ========== */
        .hero {
            background: linear-gradient(135deg, #F7FAFC 0%, #EAF2F7 60%, #E1ECF3 100%);
            padding: 150px 0 90px;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: "";
            position: absolute;
            top: 80px;
            right: -80px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(168, 198, 217, 0.18);
            filter: blur(50px);
        }
        .hero::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(180deg, transparent, rgba(247, 250, 252, 0.6));
            pointer-events: none;
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-text { padding-right: 20px; }

        .hero-text h1 {
            font-size: 40px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .hero-text h1 span {
            display: block;
            font-size: 28px;
            font-weight: 600;
            color: var(--primary);
            margin-top: 4px;
        }

        .hero-sub {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 480px;
        }

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

        .hero-visual {
            position: relative;
        }
        .hero-visual img {
            width: 100%;
            border-radius: 16px;
            box-shadow: var(--shadow);
            object-fit: cover;
            aspect-ratio: 4 / 3;
        }
        .hero-visual::after {
            content: "";
            position: absolute;
            inset: 0;
            border-radius: 16px;
            background: linear-gradient(180deg, transparent 60%, rgba(27, 42, 59, 0.15) 100%);
            pointer-events: none;
        }

        .hero-float-card {
            position: absolute;
            left: -18px;
            bottom: 24px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(6px);
            border-radius: 12px;
            box-shadow: var(--shadow-hover);
            border: 1px solid var(--border);
            padding: 14px 18px;
            z-index: 2;
        }
        .float-row {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-dark);
            font-weight: 500;
            padding: 3px 0;
        }
        .float-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            flex-shrink: 0;
            box-shadow: 0 0 0 3px rgba(123, 167, 195, 0.2);
        }

        /* ========== 板块通用 ========== */
        .section { padding: 80px 0; }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 28px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .section-header .section-sub {
            font-size: 15px;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }

        /* ========== 三步上手 ========== */
        .steps-section { padding: 80px 0; }

        .steps-grid {
            display: grid;
            grid-template-columns: 1fr auto 1fr auto 1fr;
            gap: 20px;
            align-items: center;
            margin-bottom: 32px;
        }

        .step-card {
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            padding: 32px 28px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            min-height: 230px;
        }
        .step-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .step-num {
            position: absolute;
            top: 16px;
            right: 18px;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(168, 198, 217, 0.35);
            color: var(--text-dark);
            font-size: 13px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: "Inter", sans-serif;
        }

        .step-icon {
            font-size: 30px;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
        }

        .step-arrow {
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-light);
            font-size: 22px;
            flex-shrink: 0;
        }

        .steps-tip {
            background: rgba(168, 198, 217, 0.18);
            border-radius: var(--radius-sm);
            padding: 14px 24px;
            text-align: center;
            font-size: 14px;
            color: var(--text-body);
            margin-top: 8px;
        }
        .steps-tip .tip-link {
            color: var(--primary-dark);
            font-weight: 600;
            margin-left: 6px;
        }
        .steps-tip .tip-link:hover { text-decoration: underline; }

        /* ========== 优势板块 ========== */
        .advantages-section {
            padding: 0 0 80px;
        }

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

        .adv-card {
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            padding: 28px;
            transition: var(--transition);
        }
        .adv-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .adv-card .adv-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(123, 167, 195, 0.14);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .adv-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

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

        /* ========== 案例证明 ========== */
        .cases-section {
            padding: 0 0 80px;
        }

        .cases-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 24px;
        }

        .case-card {
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--white);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            position: relative;
            transition: var(--transition);
        }
        .case-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .case-large img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .case-large:hover img { transform: scale(1.03); }

        .case-overlay {
            padding: 24px;
            background: linear-gradient(180deg, transparent 0%, rgba(255, 255, 255, 0.96) 40%);
        }

        .case-large .case-overlay {
            position: absolute;
            right: 0;
            bottom: 0;
            left: 0;
        }

        .case-overlay .badge { margin-bottom: 10px; }

        .case-overlay h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .case-overlay p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 8px;
        }

        .read-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
        }
        .read-more .fa-arrow-right { transition: transform 0.3s ease; }
        .read-more:hover .fa-arrow-right { transform: translateX(4px); }

        .case-stack {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .case-small {
            flex: 1;
            display: flex;
            overflow: hidden;
        }
        .case-small img {
            width: 40%;
            height: 100%;
            min-height: 180px;
            object-fit: cover;
        }
        .case-small .case-overlay {
            flex: 1;
            padding: 20px;
            background: var(--white);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .case-small h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.5;
            margin-bottom: 6px;
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 0 0 80px;
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-hover); }
        .faq-item.active { border-color: var(--border-solid); }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 20px 24px;
            background: transparent;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            transition: var(--transition);
        }
        .faq-question:hover { background: rgba(247, 250, 252, 0.7); }

        .faq-mark {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: rgba(123, 167, 195, 0.2);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .faq-icon {
            margin-left: auto;
            font-size: 20px;
            color: var(--primary);
            font-weight: 400;
            transition: transform 0.3s ease;
            flex-shrink: 0;
            line-height: 1;
        }
        .faq-item.active .faq-icon { transform: rotate(45deg); }

        .faq-answer {
            display: none;
            padding: 0 24px 20px 62px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
        }
        .faq-answer p { margin-bottom: 0; }

        .faq-footer {
            text-align: center;
            margin-top: 28px;
        }

        /* ========== 最新资讯 ========== */
        .news-section {
            padding: 0 0 80px;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-bottom: 24px;
        }

        .news-card {
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            display: flex;
            gap: 20px;
            padding: 16px;
            transition: var(--transition);
        }
        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .news-thumb {
            width: 160px;
            height: 110px;
            border-radius: 8px;
            overflow: hidden;
            flex-shrink: 0;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-card:hover .news-thumb img { transform: scale(1.05); }

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

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 6px;
        }

        .news-date {
            font-size: 13px;
            color: var(--text-light);
            font-family: "Inter", sans-serif;
        }

        .news-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.5;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .news-body h3 a { color: var(--text-dark); }
        .news-body h3 a:hover { color: var(--primary); }

        .news-body > p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            margin-bottom: 6px;
        }

        .news-empty {
            background: var(--white);
            border-radius: var(--radius);
            border: 1px dashed var(--border-solid);
            padding: 48px 24px;
            text-align: center;
            color: var(--text-light);
            font-size: 15px;
        }

        .news-more {
            text-align: center;
            margin-top: 12px;
        }

        /* ========== CTA / 表单 ========== */
        .cta-section {
            padding: 0 0 80px;
        }

        .cta-card {
            background: linear-gradient(135deg, #EAF2F7 0%, #F7FAFC 100%);
            border-radius: 20px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            padding: 48px;
            text-align: center;
        }

        .cta-card h2 {
            font-size: 28px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }

        .cta-card > p {
            font-size: 15px;
            color: var(--text-body);
            margin-bottom: 36px;
        }

        .cta-form {
            max-width: 720px;
            margin: 0 auto;
            background: var(--white);
            border-radius: var(--radius);
            padding: 32px;
            box-shadow: var(--shadow);
            text-align: left;
            border: 1px solid var(--border);
        }

        .cta-form label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
            display: block;
        }

        .cta-form input,
        .cta-form textarea {
            width: 100%;
            border: 1px solid var(--primary-light);
            border-radius: var(--radius-sm);
            padding: 12px 14px;
            font-size: 14px;
            color: var(--text-dark);
            background: var(--bg);
            transition: var(--transition);
            margin-bottom: 16px;
            outline: none;
        }
        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(123, 167, 195, 0.18);
            background: #fff;
        }
        .cta-form input::placeholder,
        .cta-form textarea::placeholder {
            color: var(--text-light);
        }

        .form-tip {
            height: 24px;
            font-size: 14px;
            margin-top: 8px;
            text-align: center;
            display: none;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--text-dark);
            color: rgba(255, 255, 255, 0.72);
            padding: 56px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 48px;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px 40px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer-logo .logo-text {
            color: #fff;
            font-size: 18px;
        }
        .footer-logo .logo-icon {
            width: 34px;
            height: 34px;
            font-size: 15px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 6px;
        }

        .footer-icp {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            margin-top: 12px;
        }

        .footer-links h4,
        .footer-contact h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-links a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-links a:hover { color: #fff; padding-left: 4px; }

        .footer-contact p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-contact i {
            width: 20px;
            color: var(--primary-light);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: var(--container);
            margin: 0 auto;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom p { margin-bottom: 0; }
        .footer-domain {
            font-family: "Inter", sans-serif;
            letter-spacing: 0.5px;
        }

        /* ========== 滚动条 ========== */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--bg); }
        ::-webkit-scrollbar-thumb {
            background: var(--primary-light);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover { background: var(--primary); }

        /* ========== 响应式 ========== */
        @media (max-width: 1023px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-text { padding-right: 0; }
            .hero-text h1 { font-size: 34px; }
            .hero-text h1 span { font-size: 24px; }
            .hero { padding: 130px 0 60px; }
            .hero-visual img { aspect-ratio: 16 / 10; }
            .hero-float-card { left: 12px; }

            .adv-grid { grid-template-columns: 1fr 1fr; }
            .cases-grid { grid-template-columns: 1fr; }
            .case-large img { height: 300px; }
            .case-small img { min-height: 160px; }

            .main-nav { display: none; }
            .nav-cta { display: none; }
            .hamburger { display: flex; }
            .mobile-menu { display: none; }
            .mobile-menu.open { display: grid; }
        }

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

            .site-header { padding: 12px 16px 0; }
            .nav-panel { padding: 10px 14px; }
            .logo-text { font-size: 16px; }
            .logo-icon { width: 32px; height: 32px; font-size: 15px; }

            .hero { padding: 110px 0 48px; }
            .hero-text h1 { font-size: 28px; }
            .hero-text h1 span { font-size: 20px; }
            .hero-actions .btn { width: 100%; }
            .hero-float-card { display: none; }

            .steps-section { padding: 48px 0; }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .step-arrow { transform: rotate(90deg); }
            .step-card { min-height: auto; padding: 24px 20px; }

            .advantages-section { padding: 0 0 48px; }
            .adv-grid { grid-template-columns: 1fr; gap: 16px; }

            .cases-section { padding: 0 0 48px; }
            .case-large img { height: 220px; }
            .case-overlay h3 { font-size: 17px; }
            .case-small { flex-direction: column; }
            .case-small img { width: 100%; height: 160px; min-height: 0; }
            .case-small .case-overlay { padding: 16px; }

            .faq-section { padding: 0 0 48px; }
            .faq-question { padding: 16px; font-size: 14px; }
            .faq-answer { padding: 0 16px 16px 48px; }
            .faq-mark { width: 22px; height: 22px; font-size: 12px; }

            .news-section { padding: 0 0 48px; }
            .news-card { flex-direction: column; padding: 12px; }
            .news-thumb { width: 100%; height: 160px; }
            .news-body h3 { white-space: normal; }

            .cta-section { padding: 0 0 48px; }
            .cta-card { padding: 28px 16px; }
            .cta-form { padding: 20px 16px; }
            .cta-card h2 { font-size: 22px; }

            .site-footer { padding-top: 40px; }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 28px;
            }
            .footer-bottom { flex-direction: column; text-align: center; }

            .section-header { margin-bottom: 28px; }
            .section-header h2 { font-size: 22px; }
        }

        @media (max-width: 520px) {
            .hero-text h1 { font-size: 26px; }
            .hero-sub { font-size: 15px; }
            .badge { font-size: 11px; padding: 3px 10px; }
            .btn { padding: 12px 20px; font-size: 14px; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --primary: #7BA7C3;
  --primary-dark: #3D6B8F;
  --secondary: #A8C6D9;
  --accent: #D9A441;
  --accent-dark: #C08A2E;
  --bg: #F7FAFC;
  --white: #FFFFFF;
  --heading: #1B2A3B;
  --body: #4A6277;
  --muted: #8FA3B8;
  --border: rgba(123, 167, 195, 0.2);
  --shadow: 0 8px 24px rgba(27, 42, 59, 0.06);
  --shadow-hover: 0 12px 32px rgba(27, 42, 59, 0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --container: 1200px;
  --gap: 32px;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--body);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

a:hover,
a:focus {
  color: var(--primary-dark);
  outline: none;
}

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
}

/* ===== 容器 ===== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
}

/* ===== 通用按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  text-align: center;
  white-space: nowrap;
}

.btn i {
  font-size: 14px;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(123, 167, 195, 0.3);
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--primary-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(61, 107, 143, 0.3);
}

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

.btn-secondary {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
}

.btn-secondary:hover,
.btn-secondary:focus {
  background: rgba(123, 167, 195, 0.1);
  color: var(--primary-dark);
  border-color: var(--primary-dark);
}

.btn-accent {
  background: var(--accent);
  color: var(--white);
}

.btn-accent:hover,
.btn-accent:focus {
  background: var(--accent-dark);
  color: var(--white);
  transform: translateY(-2px);
}

/* ===== Header 导航 ===== */
.site-header {
  position: sticky;
  top: 16px;
  z-index: 1000;
  padding: 0 24px;
}

.header-card {
  max-width: var(--container);
  margin: 0 auto;
  background: var(--white);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(27, 42, 59, 0.08);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  gap: 20px;
  transition: var(--transition);
}

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

.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 20px;
  box-shadow: 0 4px 12px rgba(123, 167, 195, 0.4);
}

.logo-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--heading);
  letter-spacing: 0.5px;
}

.logo-text:hover {
  color: var(--primary);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  justify-content: center;
}

.nav-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--body);
  background: rgba(168, 198, 217, 0.15);
  transition: var(--transition);
  border: 1px solid transparent;
}

.nav-item i {
  font-size: 14px;
  color: var(--primary);
  transition: var(--transition);
}

.nav-item:hover {
  background: rgba(123, 167, 195, 0.18);
  color: var(--primary-dark);
  transform: translateY(-1px);
}

.nav-item.active {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(123, 167, 195, 0.4);
}

.nav-item.active i {
  color: var(--white);
}

.nav-item.active:hover {
  background: var(--primary-dark);
  color: var(--white);
}

.btn-header {
  padding: 12px 24px;
  font-size: 14px;
  flex-shrink: 0;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(123, 167, 195, 0.12);
  color: var(--primary-dark);
  font-size: 20px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.menu-toggle:hover {
  background: rgba(123, 167, 195, 0.22);
}

/* ===== 移动端导航 ===== */
.mobile-menu {
  position: fixed;
  top: 88px;
  left: 24px;
  right: 24px;
  z-index: 999;
  background: var(--white);
  border-radius: 16px;
  box-shadow: 0 16px 48px rgba(27, 42, 59, 0.16);
  border: 1px solid var(--border);
  padding: 20px;
  display: none;
  opacity: 0;
  transform: translateY(-12px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

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

.mobile-menu .nav-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.mobile-menu .nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 18px 10px;
  border-radius: var(--radius);
  background: rgba(168, 198, 217, 0.12);
  text-align: center;
  gap: 8px;
  font-size: 14px;
}

.mobile-menu .nav-item i {
  font-size: 24px;
}

.mobile-menu .nav-item.active {
  background: var(--primary);
  color: var(--white);
}

.mobile-menu .nav-item.active i {
  color: var(--white);
}

.mobile-menu .btn {
  width: 100%;
  margin-top: 16px;
}

/* ===== Hero 区 ===== */
.cat-hero {
  padding: 80px 0 56px;
  background: linear-gradient(180deg, rgba(247, 250, 252, 0) 0%, rgba(123, 167, 195, 0.08) 100%);
}

.cat-hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
  background: var(--white);
  border-radius: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  padding: 48px;
  position: relative;
  overflow: hidden;
}

.cat-hero-inner::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(168, 198, 217, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.cat-hero-text {
  position: relative;
  z-index: 1;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 24px;
}

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

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

.breadcrumb span {
  color: var(--muted);
}

.cat-hero h1 {
  font-size: 38px;
  font-weight: 700;
  color: var(--heading);
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.cat-hero .cat-hero-desc {
  font-size: 16px;
  color: var(--body);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 480px;
}

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

.cat-hero-img {
  position: relative;
  z-index: 1;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 12px 32px rgba(27, 42, 59, 0.12);
}

.cat-hero-img img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.cat-hero-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 70%, rgba(27, 42, 59, 0.2) 100%);
}

/* ===== 通用 Section 头部 ===== */
.section-head {
  text-align: center;
  margin-bottom: 48px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(123, 167, 195, 0.12);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.section-head h2 {
  font-size: 30px;
  font-weight: 600;
  color: var(--heading);
  line-height: 1.4;
  margin-bottom: 12px;
}

.section-head p {
  color: var(--muted);
  font-size: 15px;
  max-width: 560px;
  margin: 0 auto;
}

/* ===== 分类卡片列表 ===== */
.cat-cards-section {
  padding: 72px 0;
}

.cat-card {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

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

.cat-card-img {
  position: relative;
  overflow: hidden;
  height: 200px;
}

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

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

.cat-card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(27, 42, 59, 0.08);
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.cat-card-tag::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.cat-card-body {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.cat-card-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--heading);
  line-height: 1.5;
  margin-bottom: 12px;
}

.cat-card-desc {
  font-size: 15px;
  color: var(--body);
  line-height: 1.8;
  flex: 1;
  margin-bottom: 20px;
}

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

.cat-card-link i {
  transition: transform 0.3s ease;
}

.cat-card-link:hover {
  color: var(--primary-dark);
}

.cat-card-link:hover i {
  transform: translateX(4px);
}

/* ===== 入驻流程区 ===== */
.steps-section {
  padding: 72px 0;
  background: var(--white);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 16px;
}

.step-item {
  position: relative;
  background: var(--bg);
  border-radius: 14px;
  border: 1px solid var(--border);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
}

.step-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(123, 167, 195, 0.15);
  color: var(--primary-dark);
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  position: relative;
}

.step-num::after {
  content: "";
  position: absolute;
  width: 4px;
  height: 58px;
  background: linear-gradient(180deg, var(--secondary) 0%, transparent 100%);
  top: 50%;
  left: 54px;
  border-radius: 2px;
}

.step-item:last-child .step-num::after {
  display: none;
}

.step-icon {
  font-size: 28px;
  color: var(--primary);
  margin-bottom: 12px;
}

.step-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--heading);
  margin-bottom: 10px;
}

.step-desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

.steps-note {
  margin-top: 40px;
  background: rgba(168, 198, 217, 0.2);
  border-radius: 12px;
  padding: 18px 28px;
  text-align: center;
  font-size: 14px;
  color: var(--body);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.steps-note i {
  color: var(--accent);
}

.steps-note a {
  color: var(--primary);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* ===== FAQ 区 ===== */
.faq-section {
  padding: 72px 0;
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  box-shadow: var(--shadow-hover);
}

.faq-item.open {
  border-color: rgba(123, 167, 195, 0.4);
}

.faq-question {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 22px 28px;
  cursor: pointer;
  user-select: none;
  transition: var(--transition);
}

.faq-question:hover {
  background: rgba(247, 250, 252, 0.6);
}

.faq-mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(123, 167, 195, 0.12);
  color: var(--primary);
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.faq-question h3 {
  flex: 1;
  font-size: 17px;
  font-weight: 600;
  color: var(--heading);
  line-height: 1.5;
  margin: 0;
}

.faq-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: rgba(123, 167, 195, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-icon {
  transform: rotate(225deg);
  background: var(--primary);
  color: var(--white);
}

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

.faq-answer-inner {
  padding: 0 28px 24px 80px;
  font-size: 15px;
  color: var(--body);
  line-height: 1.8;
}

.faq-footer {
  text-align: center;
  margin-top: 36px;
}

.faq-footer p {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 14px;
}

/* ===== CTA 区 ===== */
.cta-section {
  padding: 72px 0 88px;
}

.cta-card {
  background: linear-gradient(135deg, rgba(123, 167, 195, 0.12) 0%, rgba(247, 250, 252, 0) 50%, rgba(217, 164, 65, 0.08) 100%);
  border-radius: 20px;
  border: 1px solid var(--border);
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: "";
  position: absolute;
  top: -40px;
  right: -40px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(168, 198, 217, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-card::after {
  content: "";
  position: absolute;
  bottom: -30px;
  left: -30px;
  width: 160px;
  height: 160px;
  background: radial-gradient(circle, rgba(217, 164, 65, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-title {
  font-size: 28px;
  font-weight: 600;
  color: var(--heading);
  line-height: 1.4;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.cta-desc {
  font-size: 15px;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 32px;
  position: relative;
  z-index: 1;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.cta-note {
  margin-top: 20px;
  font-size: 13px;
  color: var(--muted);
  position: relative;
  z-index: 1;
}

/* ===== Footer ===== */
.site-footer {
  background: #1B2A3B;
  color: rgba(255, 255, 255, 0.75);
  padding: 56px 0 0;
  margin-top: 24px;
}

.footer-grid {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}

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

.footer-brand .logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  font-size: 18px;
}

.footer-brand .logo-text {
  color: var(--white);
  font-size: 20px;
}

.footer-brand p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.7;
  margin-bottom: 8px;
}

.footer-icp {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35) !important;
}

.footer-links h4,
.footer-contact h4 {
  color: var(--white);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
}

.footer-links a {
  display: block;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  padding: 5px 0;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--white);
  padding-left: 6px;
}

.footer-contact p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  padding: 5px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-contact p i {
  width: 18px;
  color: var(--secondary);
  font-size: 14px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container);
  margin: 0 auto;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
}

.footer-domain {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.5px;
}

/* ===== 响应式断点 ===== */
@media (max-width: 1024px) {
  .cat-hero {
    padding: 56px 0 40px;
  }

  .cat-hero-inner {
    padding: 36px;
    gap: 32px;
  }

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

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

  .step-num::after {
    display: none;
  }
}

@media (max-width: 768px) {
  .site-header {
    top: 12px;
    padding: 0 16px;
  }

  .header-card {
    padding: 12px 16px;
  }

  .main-nav {
    display: none;
  }

  .btn-header {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .cat-hero {
    padding: 48px 0 32px;
  }

  .cat-hero-inner {
    grid-template-columns: 1fr;
    padding: 28px;
    gap: 24px;
  }

  .cat-hero-img img {
    height: 220px;
  }

  .cat-hero-actions {
    flex-direction: column;
  }

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

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

  .cat-cards-section,
  .steps-section,
  .faq-section,
  .cta-section {
    padding: 48px 0;
  }

  .cat-card-body {
    padding: 20px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .step-item {
    display: flex;
    align-items: center;
    text-align: left;
    gap: 16px;
    padding: 20px;
  }

  .step-num {
    margin: 0;
    flex-shrink: 0;
  }

  .step-icon {
    display: none;
  }

  .step-title {
    margin-bottom: 4px;
  }

  .faq-question {
    padding: 18px 16px;
    gap: 12px;
  }

  .faq-answer-inner {
    padding: 0 16px 18px 64px;
  }

  .cta-card {
    padding: 36px 24px;
  }

  .cta-title {
    font-size: 24px;
  }

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .cat-hero h1 {
    font-size: 28px;
  }

  .cat-hero-desc {
    font-size: 15px;
  }

  .section-head {
    margin-bottom: 32px;
  }

  .section-head h2 {
    font-size: 23px;
  }

  .cat-card-title {
    font-size: 18px;
  }

  .footer-grid {
    padding-left: 16px;
    padding-right: 16px;
  }

  .footer-bottom {
    padding-left: 16px;
    padding-right: 16px;
  }
}

/* roulang page: article */
:root {
    --primary: #7BA7C3;
    --primary-dark: #3D6B8F;
    --primary-light: #A8C6D9;
    --accent: #D9A441;
    --accent-dark: #C08F2E;
    --bg: #F7FAFC;
    --white: #FFFFFF;
    --text-dark: #1B2A3B;
    --text-body: #4A6277;
    --text-light: #8FA3B8;
    --border: rgba(123, 167, 195, 0.2);
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 8px 24px rgba(27, 42, 59, 0.06);
    --shadow-hover: 0 12px 32px rgba(27, 42, 59, 0.12);
    --transition: all 0.3s ease;
    --container: 1200px;
    --container-tight: 760px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-body);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; outline: none; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ===== 导航 ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: linear-gradient(to bottom, rgba(247,250,252,0.96), rgba(247,250,252,0));
    transition: var(--transition);
}
.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    padding: 12px 20px;
    position: relative;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    box-shadow: 0 4px 12px rgba(123,167,195,0.35);
}
.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: 0.5px;
    white-space: nowrap;
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    justify-content: center;
}
.nav-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    border-radius: var(--radius-sm);
    background: rgba(168, 198, 217, 0.18);
    color: var(--text-dark);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    border: 1px solid transparent;
}
.nav-item i { font-size: 14px; color: var(--primary); transition: var(--transition); }
.nav-item:hover {
    background: rgba(123, 167, 195, 0.18);
    color: var(--primary-dark);
    transform: translateY(-1px);
    border-color: rgba(123,167,195,0.3);
}
.nav-item.active {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(123,167,195,0.4);
}
.nav-item.active i { color: #fff; }
.header-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    border: 1px solid transparent;
    white-space: nowrap;
    flex-shrink: 0;
}
.header-cta:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(61,107,143,0.3);
}
.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    background: rgba(123, 167, 195, 0.15);
    color: var(--primary-dark);
    font-size: 18px;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    border: 1px solid var(--border);
}
.nav-toggle:hover {
    background: rgba(123, 167, 195, 0.28);
}

/* ===== 通用按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 28px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid transparent;
    text-align: center;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(61,107,143,0.25);
}
.btn-primary:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}
.btn-ghost {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}
.btn-ghost:hover {
    background: rgba(123, 167, 195, 0.12);
    color: var(--primary-dark);
    transform: translateY(-2px);
}
.btn-ghost:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ===== 文章页主体 ===== */
.article-main {
    padding-top: 140px;
    padding-bottom: 80px;
    min-height: 80vh;
}
.article-wrapper {
    max-width: var(--container-tight);
    margin: 0 auto;
}
.article-card {
    background: var(--white);
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    padding: 52px 56px;
    margin-bottom: 48px;
}
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}
.breadcrumb a { color: var(--primary); font-weight: 500; }
.breadcrumb a:hover { color: var(--primary-dark); text-decoration: underline; }
.breadcrumb .sep { color: rgba(143,163,184,0.6); }
.breadcrumb .current { color: var(--text-light); }
.article-header {
    margin-bottom: 32px;
}
.article-header h1 {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.35;
    color: var(--text-dark);
    margin-bottom: 20px;
    letter-spacing: -0.3px;
}
.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 13px;
    color: var(--text-light);
}
.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.meta-item i { color: var(--primary); font-size: 14px; }
.meta-item .meta-sep {
    width: 3px;
    height: 3px;
    background: var(--text-light);
    border-radius: 50%;
    display: inline-block;
    margin: 0 4px;
}

/* 正文排版 */
.article-body {
    font-size: 16px;
    line-height: 1.9;
    color: var(--text-body);
    word-break: break-word;
}
.article-body > * + * { margin-top: 1.2em; }
.article-body h2 {
    font-size: 26px;
    font-weight: 600;
    color: var(--text-dark);
    margin: 40px 0 16px;
    line-height: 1.4;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}
.article-body h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
    margin: 30px 0 14px;
    line-height: 1.5;
}
.article-body h4 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-dark);
    margin: 24px 0 10px;
}
.article-body p {
    margin-bottom: 22px;
    text-align: justify;
    line-height: 1.9;
}
.article-body ul,
.article-body ol {
    margin: 20px 0 22px;
    padding-left: 24px;
}
.article-body ul li {
    list-style: disc;
    margin-bottom: 8px;
    line-height: 1.8;
}
.article-body ol li {
    list-style: decimal;
    margin-bottom: 8px;
    line-height: 1.8;
}
.article-body ul li::marker,
.article-body ol li::marker {
    color: var(--primary);
    font-weight: 600;
}
.article-body blockquote {
    border-left: 4px solid var(--primary);
    background: rgba(123, 167, 195, 0.08);
    padding: 18px 22px;
    border-radius: 0 10px 10px 0;
    margin: 28px 0;
    color: var(--text-body);
    font-style: normal;
    position: relative;
}
.article-body blockquote p { margin-bottom: 0; }
.article-body img {
    max-width: 100%;
    border-radius: var(--radius);
    margin: 28px auto;
    box-shadow: var(--shadow);
}
.article-body figure {
    margin: 28px 0;
}
.article-body figure img {
    margin: 0 auto 12px;
}
.article-body figcaption {
    text-align: center;
    font-size: 13px;
    color: var(--text-light);
}
.article-body code {
    background: rgba(168, 198, 217, 0.22);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 14px;
    font-family: "SF Mono", Consolas, "Courier New", monospace;
    color: var(--primary-dark);
}
.article-body pre {
    background: rgba(27, 42, 59, 0.96);
    color: #E8F0F8;
    padding: 20px 24px;
    border-radius: var(--radius);
    overflow-x: auto;
    margin: 24px 0;
    font-size: 14px;
    line-height: 1.7;
}
.article-body pre code {
    background: transparent;
    color: inherit;
    padding: 0;
    font-size: 14px;
}
.article-body strong { color: var(--text-dark); font-weight: 600; }
.article-body em { color: var(--primary-dark); font-style: italic; }
.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14px;
    border-radius: 8px;
    overflow: hidden;
}
.article-body table th {
    background: rgba(123, 167, 195, 0.12);
    color: var(--text-dark);
    font-weight: 600;
    padding: 12px 16px;
    text-align: left;
}
.article-body table td {
    padding: 10px 16px;
    border-top: 1px solid var(--border);
}
.article-body table tr:hover td {
    background: rgba(123, 167, 195, 0.04);
}
.article-body hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 32px 0;
}
.article-body a {
    color: var(--primary);
    font-weight: 500;
    border-bottom: 1px solid rgba(123,167,195,0.3);
}
.article-body a:hover {
    color: var(--primary-dark);
    border-bottom-color: var(--primary-dark);
}

/* 标签 */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding-top: 28px;
    margin-top: 36px;
    border-top: 1px solid var(--border);
}
.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 16px;
    background: rgba(168, 198, 217, 0.25);
    color: var(--primary-dark);
    border-radius: 20px;
    font-size: 13px;
    transition: var(--transition);
    border: 1px solid transparent;
}
.tag:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-1px);
}
.tag::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
}

/* 上一篇/下一篇 */
.article-pager {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding-top: 24px;
    margin-top: 32px;
    border-top: 1px solid var(--border);
}
.pager-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    background: rgba(168, 198, 217, 0.14);
    color: var(--text-dark);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    border: 1px solid transparent;
}
.pager-link i { transition: transform 0.3s ease; }
.pager-link:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
}
.pager-link.pager-prev:hover i { transform: translateX(-3px); }
.pager-link.pager-next:hover i { transform: translateX(3px); }

/* 空状态 */
.article-empty {
    background: var(--white);
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    padding: 80px 48px;
    text-align: center;
}
.empty-icon {
    width: 84px;
    height: 84px;
    border-radius: 50%;
    background: rgba(123, 167, 195, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--primary);
    margin: 0 auto 24px;
}
.article-empty h1 {
    font-size: 30px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}
.article-empty p {
    color: var(--text-light);
    font-size: 15px;
    margin-bottom: 32px;
}
.article-empty .btn {
    margin-top: 8px;
}

/* 相关阅读 */
.related-section {
    margin-top: 56px;
}
.section-head {
    text-align: center;
    margin-bottom: 36px;
}
.section-head h2 {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
    position: relative;
    display: inline-block;
    padding-bottom: 14px;
}
.section-head h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
}
.section-head p {
    color: var(--text-light);
    font-size: 15px;
    margin-top: 6px;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-card {
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.related-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
    border-color: rgba(123, 167, 195, 0.4);
}
.related-card-img-wrap {
    overflow: hidden;
    position: relative;
}
.related-card-img {
    width: 100%;
    height: 170px;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.related-card:hover .related-card-img {
    transform: scale(1.05);
}
.related-card-body {
    padding: 22px 22px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.related-card .card-tag {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 12px;
    background: rgba(123, 167, 195, 0.14);
    color: var(--primary-dark);
    border-radius: 4px;
    font-size: 12px;
    align-self: flex-start;
    margin-bottom: 12px;
}
.related-card .card-tag::before {
    content: '';
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--accent);
}
.related-card h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-dark);
    line-height: 1.5;
    margin-bottom: 10px;
    transition: var(--transition);
}
.related-card:hover h3 { color: var(--primary); }
.related-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.65;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}
.related-card .card-more {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 500;
    margin-top: 14px;
    transition: var(--transition);
}
.related-card .card-more i { transition: transform 0.3s ease; }
.related-card:hover .card-more { color: var(--primary-dark); }
.related-card:hover .card-more i { transform: translateX(4px); }

/* 文章CTA */
.article-cta {
    margin-top: 64px;
    background: linear-gradient(120deg, rgba(123,167,195,0.18), rgba(168,198,217,0.1), rgba(247,250,252,0.4));
    border-radius: 16px;
    border: 1px solid var(--border);
    padding: 48px 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
}
.cta-text h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
    line-height: 1.4;
}
.cta-text p {
    font-size: 15px;
    color: var(--text-body);
    margin: 0;
}
.article-cta .btn {
    flex-shrink: 0;
}

/* ===== 页脚 ===== */
.site-footer {
    background: #1B2A3B;
    color: rgba(255, 255, 255, 0.7);
    padding: 56px 0 0;
    margin-top: 80px;
}
.footer-grid {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px 40px;
    display: grid;
    grid-template-columns: 2fr 1fr 1.6fr;
    gap: 48px;
}
.footer-brand .footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
}
.footer-brand .footer-logo .logo-icon {
    background: rgba(255, 255, 255, 0.15);
    box-shadow: none;
}
.footer-brand .footer-logo span { color: #fff; }
.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 8px;
    max-width: 280px;
}
.footer-brand .footer-icp {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.4);
}
.footer-links h4,
.footer-contact h4 {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 18px;
}
.footer-links a {
    display: block;
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    margin-bottom: 10px;
    transition: var(--transition);
}
.footer-links a:hover {
    color: #fff;
    padding-left: 4px;
}
.footer-contact p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.footer-contact p i {
    width: 18px;
    color: var(--primary-light);
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    text-align: center;
}
.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
    margin: 0;
}
.footer-bottom .footer-domain {
    color: rgba(255, 255, 255, 0.3);
    font-size: 12px;
    letter-spacing: 1px;
    margin-top: 4px;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .header-inner { gap: 12px; padding: 12px 16px; }
    .nav-item { padding: 8px 12px; font-size: 13px; }
    .header-cta { padding: 9px 16px; font-size: 13px; }
    .related-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .article-card { padding: 44px 40px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 768px) {
    .site-header { padding: 12px 0; }
    .header-inner { padding: 10px 14px; }
    .nav-toggle { display: flex; }
    .main-nav {
        display: none;
        position: absolute;
        top: calc(100% + 12px);
        left: 0;
        right: 0;
        background: var(--white);
        border-radius: 16px;
        box-shadow: var(--shadow-hover);
        border: 1px solid var(--border);
        padding: 16px;
        flex-direction: column;
        gap: 8px;
        z-index: 999;
    }
    .main-nav.open { display: flex; }
    .main-nav .nav-item {
        width: 100%;
        justify-content: flex-start;
        padding: 12px 16px;
        font-size: 14px;
    }
    .header-cta { display: none; }
    .header-cta.mobile-visible {
        display: flex;
        width: 100%;
        justify-content: center;
        margin-top: 8px;
    }
    .article-main { padding-top: 120px; padding-bottom: 60px; }
    .article-card { padding: 36px 24px; }
    .article-header h1 { font-size: 28px; margin-bottom: 16px; }
    .article-body { font-size: 15px; line-height: 1.85; }
    .article-body h2 { font-size: 22px; margin-top: 32px; }
    .article-body h3 { font-size: 18px; margin-top: 26px; }
    .related-grid { grid-template-columns: 1fr; gap: 16px; }
    .related-card-img { height: 180px; }
    .article-cta { padding: 36px 28px; flex-direction: column; align-items: flex-start; gap: 20px; text-align: left; }
    .article-cta .btn { width: 100%; }
    .article-pager { flex-direction: column; align-items: stretch; }
    .pager-link { justify-content: center; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom p { font-size: 12px; }
}

@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .header-inner { padding: 8px 12px; }
    .logo-text { font-size: 19px; }
    .article-card { padding: 28px 18px; border-radius: 14px; }
    .article-header h1 { font-size: 24px; }
    .article-meta { gap: 14px; font-size: 12px; }
    .article-body { font-size: 15px; }
    .article-body p { margin-bottom: 20px; }
    .article-body blockquote { padding: 14px 16px; }
    .article-cta { padding: 30px 20px; }
    .cta-text h3 { font-size: 20px; }
    .article-empty { padding: 50px 24px; }
    .article-empty h1 { font-size: 24px; }
    .related-card-img { height: 140px; }
    .btn { padding: 12px 20px; font-size: 14px; }
}

/* roulang page: category2 */
:root {
            --primary: #7BA7C3;
            --primary-dark: #3D6B8F;
            --secondary-blue: #A8C6D9;
            --accent-gold: #D9A441;
            --bg-cloud: #F7FAFC;
            --white: #FFFFFF;
            --text-dark: #1B2A3B;
            --text-body: #4A6277;
            --text-light: #8FA3B8;
            --border-soft: rgba(123, 167, 195, 0.2);
            --shadow-card: 0 8px 24px rgba(27, 42, 59, 0.06);
            --shadow-hover: 0 12px 32px rgba(27, 42, 59, 0.12);
            --radius-card: 12px;
            --radius-btn: 8px;
            --gap-section: 72px;
            --gap-card: 28px;
            --font-main: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg-cloud);
            color: var(--text-body);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }

        ul,
        ol {
            list-style: none;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .row {
            max-width: 1200px;
            margin: 0 auto;
        }

        .row .columns {
            padding: 0 16px;
        }

        /* ========= Header & Nav ========= */
        .site-header {
            position: sticky;
            top: 16px;
            z-index: 1000;
            padding: 0 16px;
        }

        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            background: var(--white);
            border: 1px solid var(--border-soft);
            border-radius: 16px;
            box-shadow: 0 8px 24px rgba(27, 42, 59, 0.07);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 24px;
            gap: 16px;
        }

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

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(123, 167, 195, 0.35);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: 0.5px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .nav-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 10px;
            background: rgba(168, 198, 217, 0.18);
            color: var(--text-body);
            font-size: 15px;
            font-weight: 500;
            transition: all .25s ease;
            white-space: nowrap;
        }

        .nav-item i {
            font-size: 15px;
        }

        .nav-item:hover {
            background: rgba(168, 198, 217, 0.35);
            color: var(--text-dark);
        }

        .nav-item.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(123, 167, 195, 0.35);
        }

        .nav-item.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all .3s ease;
            line-height: 1.5;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
        }

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

        .btn-secondary {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-secondary:hover {
            background: rgba(123, 167, 195, 0.1);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .btn-gold {
            background: var(--accent-gold);
            color: #fff;
        }

        .btn-gold:hover {
            background: #c18f2e;
            color: #fff;
        }

        .btn-nav {
            padding: 10px 22px;
            font-size: 14px;
            flex-shrink: 0;
        }

        .btn-block {
            width: 100%;
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-soft);
            border-radius: 8px;
            padding: 8px 14px;
            font-size: 18px;
            color: var(--text-body);
            cursor: pointer;
        }

        .mobile-menu {
            display: none;
            max-width: 1200px;
            margin: 8px auto 0;
            background: var(--white);
            border: 1px solid var(--border-soft);
            border-radius: 14px;
            box-shadow: 0 8px 24px rgba(27, 42, 59, 0.08);
            padding: 16px;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-menu .nav-item {
            width: auto;
            justify-content: flex-start;
        }

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

        /* ========= Hero ========= */
        .page-hero {
            padding: 90px 0 72px;
            background: linear-gradient(180deg, #F4F9FC 0%, var(--bg-cloud) 100%);
        }

        .hero-grid {
            display: flex;
            align-items: center;
            gap: 48px;
        }

        .hero-content {
            flex: 1;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(123, 167, 195, 0.15);
            color: var(--primary-dark);
            font-size: 13px;
            border-radius: 20px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .hero-content h1 {
            font-size: 38px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .hero-content p {
            font-size: 17px;
            color: var(--text-body);
            line-height: 1.9;
            max-width: 520px;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }

        .hero-note {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(168, 198, 217, 0.15);
            border-radius: 8px;
            padding: 10px 18px;
            font-size: 14px;
            color: var(--text-body);
        }

        .hero-note i {
            color: var(--primary);
        }

        .hero-visual {
            flex: 1;
        }

        .hero-visual img {
            border-radius: 16px;
            box-shadow: var(--shadow-hover);
            object-fit: cover;
            width: 100%;
            max-height: 420px;
        }

        /* ========= Section Base ========= */
        .section-padding {
            padding: var(--gap-section) 0;
        }

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

        .section-label {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(123, 167, 195, 0.12);
            color: var(--primary-dark);
            font-size: 13px;
            border-radius: 16px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .section-head p {
            font-size: 15px;
            color: var(--text-light);
            max-width: 560px;
            margin: 0 auto;
        }

        /* ========= Services ========= */
        .services-section {
            padding: var(--gap-section) 0;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .service-card {
            background: var(--white);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
            text-align: center;
        }

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

        .service-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 20px;
            border-radius: 14px;
            background: rgba(123, 167, 195, 0.14);
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
        }

        .service-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 12px;
            text-align: center;
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-body);
            text-align: center;
        }

        /* ========= Flow ========= */
        .flow-section {
            padding: var(--gap-section) 0;
            background: linear-gradient(180deg, #F2F8FB 0%, var(--bg-cloud) 100%);
        }

        .flow-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            position: relative;
        }

        .flow-grid::before {
            content: "";
            position: absolute;
            top: 50%;
            left: 15%;
            right: 15%;
            height: 2px;
            background: rgba(168, 198, 217, 0.4);
            z-index: 0;
        }

        .flow-card {
            background: var(--white);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            padding: 40px 24px 32px;
            text-align: center;
            box-shadow: var(--shadow-card);
            position: relative;
            z-index: 1;
            transition: all .3s ease;
        }

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

        .flow-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(123, 167, 195, 0.2);
            color: var(--text-dark);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .flow-card h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .flow-card p {
            font-size: 14px;
            color: var(--text-body);
            text-align: center;
        }

        /* ========= Feature / Scenes ========= */
        .feature-section {
            padding: var(--gap-section) 0;
        }

        .feature-grid {
            display: flex;
            align-items: center;
            gap: 60px;
        }

        .feature-content {
            flex: 1;
        }

        .feature-content h2 {
            font-size: 30px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 24px;
            line-height: 1.4;
        }

        .feature-list li {
            font-size: 15px;
            color: var(--text-body);
            padding: 10px 0;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            border-bottom: 1px solid rgba(123, 167, 195, 0.12);
        }

        .feature-list li:last-child {
            border-bottom: none;
        }

        .feature-list i {
            color: var(--primary);
            font-size: 16px;
            margin-top: 6px;
        }

        .feature-content .btn {
            margin-top: 24px;
        }

        .feature-visual {
            flex: 1;
        }

        .feature-visual img {
            border-radius: 16px;
            box-shadow: var(--shadow-hover);
            object-fit: cover;
            width: 100%;
            max-height: 400px;
        }

        /* ========= FAQ ========= */
        .faq-section {
            padding: var(--gap-section) 0;
            background: linear-gradient(180deg, #F2F8FB 0%, var(--bg-cloud) 100%);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--white);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow .3s ease;
        }

        .faq-item.open {
            box-shadow: var(--shadow-hover);
        }

        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            gap: 14px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            transition: background .3s ease;
        }

        .faq-question:hover {
            background: rgba(123, 167, 195, 0.05);
        }

        .faq-mark {
            width: 30px;
            height: 30px;
            border-radius: 8px;
            background: rgba(123, 167, 195, 0.18);
            color: var(--primary-dark);
            font-size: 14px;
            font-weight: 600;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .faq-icon {
            margin-left: auto;
            font-size: 16px;
            color: var(--primary);
            flex-shrink: 0;
            transition: transform .3s ease;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            display: none;
            padding: 0 24px 24px 68px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.9;
        }

        .faq-answer p {
            background: rgba(168, 198, 217, 0.1);
            border-radius: 8px;
            padding: 16px 20px;
            border-left: 3px solid var(--primary);
        }

        .faq-more {
            text-align: center;
            margin-top: 36px;
        }

        /* ========= CTA ========= */
        .cta-section {
            padding: var(--gap-section) 0;
        }

        .cta-card {
            background: linear-gradient(135deg, #EAF3F9 0%, #F7FAFC 100%);
            border-radius: 20px;
            padding: 48px;
            display: flex;
            gap: 48px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-soft);
        }

        .cta-info {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .cta-info h2 {
            font-size: 28px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .cta-info p {
            font-size: 15px;
            color: var(--text-body);
            margin-bottom: 8px;
        }

        .cta-contacts {
            margin-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .cta-contacts p {
            font-size: 14px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .cta-contacts i {
            color: var(--primary);
            width: 18px;
        }

        .cta-form-card {
            flex: 1;
            background: var(--white);
            border-radius: 16px;
            padding: 32px;
            box-shadow: var(--shadow-card);
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            border: 1px solid rgba(168, 198, 217, 0.6);
            border-radius: 8px;
            padding: 12px 16px;
            font-size: 15px;
            color: var(--text-body);
            background: var(--bg-cloud);
            transition: all .3s ease;
            outline: none;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(123, 167, 195, 0.2);
            background: #fff;
        }

        .form-group textarea {
            resize: vertical;
            min-height: 80px;
        }

        .form-message {
            margin-top: 12px;
            font-size: 14px;
            color: #2d8a4e;
            display: none;
            min-height: 24px;
        }

        /* ========= Footer ========= */
        .site-footer {
            background: var(--text-dark);
            color: #C7D4DF;
            padding: 48px 24px 20px;
        }

        .footer-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .footer-logo .logo-icon {
            width: 36px;
            height: 36px;
            font-size: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            color: #9FB2C3;
            margin: 4px 0;
        }

        .footer-icp {
            font-size: 12px;
            color: #6E879A;
            margin-top: 12px;
        }

        .footer-links h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-links a {
            display: block;
            color: #9FB2C3;
            font-size: 14px;
            padding: 6px 0;
            transition: color .3s ease;
        }

        .footer-links a:hover {
            color: #fff;
        }

        .footer-contact p {
            font-size: 14px;
            color: #9FB2C3;
            padding: 4px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-contact i {
            width: 16px;
            color: var(--primary);
        }

        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: #6E879A;
        }

        .footer-domain {
            color: #8FA3B8 !important;
        }

        /* ========= Responsive ========= */
        @media (max-width: 1023px) {
            .hero-grid {
                flex-direction: column;
                gap: 32px;
            }

            .hero-content {
                text-align: center;
            }

            .hero-content p {
                margin-left: auto;
                margin-right: auto;
            }

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

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

            .flow-grid {
                gap: 20px;
            }

            .flow-grid::before {
                display: none;
            }

            .feature-grid {
                flex-direction: column;
                gap: 40px;
            }

            .cta-card {
                flex-direction: column;
                padding: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 767px) {
            .site-header {
                top: 8px;
                padding: 0 10px;
            }

            .header-inner {
                padding: 10px 16px;
                border-radius: 12px;
            }

            .main-nav {
                display: none;
            }

            .btn-nav {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }

            .page-hero {
                padding: 60px 0 48px;
            }

            .hero-content h1 {
                font-size: 28px;
            }

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

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

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

            .section-head h2,
            .feature-content h2,
            .cta-info h2 {
                font-size: 24px;
            }

            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }

            .faq-answer {
                padding: 0 18px 18px 52px;
            }

            .cta-card {
                padding: 24px 20px;
            }

            .cta-form-card {
                padding: 24px 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .feature-list li {
                font-size: 14px;
            }
        }

        @media (max-width: 520px) {
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .hero-note {
                width: 100%;
                justify-content: center;
                font-size: 13px;
            }

            .services-section,
            .flow-section,
            .feature-section,
            .faq-section,
            .cta-section {
                padding: 48px 0;
            }

            .section-head {
                margin-bottom: 32px;
            }
        }