/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --brand-primary: #1e5eff;
            --brand-primary-dark: #0e3fb8;
            --brand-secondary: #17c3b2;
            --bg-soft: #f3f6fc;
            --bg-white: #ffffff;
            --bg-dark: #0a1628;
            --text-primary: #152138;
            --text-body: #45566e;
            --text-muted: #8494a8;
            --border-light: #e3e9f2;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 10px rgba(15, 40, 80, 0.06);
            --shadow-md: 0 10px 35px rgba(15, 40, 80, 0.10);
            --shadow-lg: 0 24px 60px rgba(15, 40, 80, 0.16);
            --transition-base: all .25s ease;
            --font-base: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 140px;
        }

        body {
            font-family: var(--font-base);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
        }

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

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

        ul,
        ol {
            list-style: none;
            padding-left: 0;
        }

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

        .container {
            max-width: 1200px;
        }

        /* ========== 通用板块 ========== */
        .section {
            padding: 90px 0;
        }

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

        .section-head {
            max-width: 720px;
            margin: 0 auto 48px;
            text-align: center;
        }

        .section-head.left {
            text-align: left;
            margin-left: 0;
            max-width: 620px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-primary);
            background: rgba(30, 94, 255, .08);
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.35;
            letter-spacing: -0.01em;
            margin-bottom: 0;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
            margin-top: 14px;
        }

        /* ========== 按钮 ========== */
        .btn {
            border-radius: 10px;
            padding: 11px 26px;
            font-weight: 600;
            border: none;
            transition: var(--transition-base);
            --bs-btn-focus-shadow-rgb: transparent;
        }

        .btn-lg {
            padding: 14px 34px;
            font-size: 16px;
            border-radius: 12px;
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
            border-radius: 8px;
        }

        .btn-primary {
            background: var(--brand-primary);
            color: #fff;
            box-shadow: 0 6px 20px rgba(30, 94, 255, .32);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--brand-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(30, 94, 255, .40);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 14px rgba(30, 94, 255, .30);
        }

        .btn-outline-primary {
            background: transparent;
            border: 2px solid var(--brand-primary);
            color: var(--brand-primary);
        }

        .btn-outline-primary:hover,
        .btn-outline-primary:focus {
            background: var(--brand-primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-light {
            background: #fff;
            color: var(--text-primary);
            box-shadow: 0 4px 16px rgba(0, 0, 0, .10);
        }

        .btn-light:hover,
        .btn-light:focus {
            background: #f0f4ff;
            color: var(--text-primary);
            transform: translateY(-2px);
        }

        .btn-outline-light {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, .65);
            color: #fff;
        }

        .btn-outline-light:hover,
        .btn-outline-light:focus {
            background: rgba(255, 255, 255, .12);
            color: #fff;
            transform: translateY(-2px);
            border-color: #fff;
        }

        .btn:focus-visible {
            outline: 3px solid rgba(30, 94, 255, .4);
            outline-offset: 2px;
        }

        /* ========== Header / 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1080;
            background: rgba(255, 255, 255, .93);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }

        .navbar {
            padding: 12px 0;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-right: 24px;
        }

        .brand-icon {
            width: 40px;
            height: 40px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
            color: #fff;
            font-size: 18px;
            border-radius: 12px;
            box-shadow: 0 6px 16px rgba(30, 94, 255, .30);
        }

        .brand-text {
            font-weight: 800;
            font-size: 18px;
            color: var(--text-primary);
            letter-spacing: .01em;
            white-space: nowrap;
        }

        .navbar-nav .nav-link {
            font-weight: 600;
            color: var(--text-body);
            padding: 8px 18px;
            border-radius: 8px;
        }

        .navbar-nav .nav-link:hover {
            color: var(--brand-primary);
            background: rgba(30, 94, 255, .06);
        }

        .navbar-nav .nav-link.active {
            color: var(--brand-primary);
            background: rgba(30, 94, 255, .10);
        }

        .nav-cta {
            margin-left: 8px;
            padding: 8px 20px;
            border-radius: 8px;
        }

        .navbar-toggler {
            border: none;
            padding: 6px 10px;
            border-radius: 8px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(30, 94, 255, .25);
        }

        /* ========== 进度步骤导航 ========== */
        .nav-steps {
            border-top: 1px solid var(--border-light);
            background: #fbfcff;
            padding: 10px 0;
        }

        .step-row {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .step-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
            padding: 4px 8px;
            border-radius: 6px;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .step-item:hover {
            color: var(--brand-primary);
            background: rgba(30, 94, 255, .06);
        }

        .step-num {
            width: 22px;
            height: 22px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(30, 94, 255, .12);
            color: var(--brand-primary);
            border-radius: 50%;
            font-size: 11px;
            font-weight: 800;
        }

        .step-line {
            flex: 1;
            height: 2px;
            min-width: 16px;
            background: linear-gradient(90deg, var(--brand-primary), var(--brand-secondary));
            border-radius: 2px;
        }

        /* ========== Hero ========== */
        .hero-section {
            position: relative;
            padding: 110px 0 120px;
            color: #fff;
            overflow: hidden;
            background: var(--bg-dark);
            min-height: 600px;
            display: flex;
            align-items: center;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 1;
            background-size: cover;
            background-position: center;
        }

        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(75deg, rgba(8, 18, 36, .90) 0%, rgba(8, 18, 36, .70) 50%, rgba(8, 18, 36, .35) 100%);
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            z-index: 2;
            background: radial-gradient(ellipse at 75% 45%, rgba(30, 94, 255, .22) 0%, transparent 60%);
        }

        .hero-content {
            position: relative;
            z-index: 3;
            width: 100%;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .18);
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .02em;
            color: #eaf0ff;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }

        .hero-title {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.3;
            color: #fff;
            letter-spacing: -0.01em;
            max-width: 600px;
            margin-bottom: 0;
        }

        .hero-desc {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .82);
            max-width: 580px;
            margin: 20px 0 32px;
        }

        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* Hero 推荐面板 */
        .hero-panel {
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .20);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-radius: var(--radius-xl);
            padding: 30px;
            color: #fff;
            box-shadow: 0 20px 50px rgba(0, 0, 0, .25);
            position: relative;
        }

        .hero-panel::before {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-xl);
            background: linear-gradient(135deg, rgba(255, 255, 255, .08) 0%, transparent 50%);
            pointer-events: none;
        }

        .panel-badge {
            display: inline-block;
            background: #ff5a79;
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 18px;
        }

        .panel-title {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .panel-meta {
            display: flex;
            gap: 20px;
            font-size: 14px;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 14px;
        }

        .panel-meta i {
            color: #ffc97a;
        }

        .panel-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, .75);
            margin-bottom: 16px;
        }

        .panel-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 20px;
        }

        .tag-dark {
            background: rgba(255, 255, 255, .16);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, .15);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
        }

        /* ========== 标签通用 ========== */
        .tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            line-height: 1.4;
        }

        .tag-blue {
            background: rgba(30, 94, 255, .10);
            color: var(--brand-primary);
        }

        /* ========== 服务卡片 ========== */
        .service-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform .3s ease, box-shadow .3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }

        .service-img {
            height: 210px;
            overflow: hidden;
        }

        .service-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }

        .service-card:hover .service-img img {
            transform: scale(1.06);
        }

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

        .service-body .tag {
            align-self: flex-start;
            margin-bottom: 12px;
        }

        .service-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .service-body p {
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .service-meta {
            margin-top: auto;
            padding-top: 14px;
            border-top: 1px dashed var(--border-light);
            display: flex;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ========== 流程步骤 ========== */
        .process-step {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 32px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: transform .3s ease, box-shadow .3s ease;
            height: 100%;
        }

        .process-step:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }

        .step-circle {
            width: 58px;
            height: 58px;
            margin: 0 auto 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            border-radius: 50%;
            box-shadow: 0 10px 24px rgba(30, 94, 255, .30);
        }

        .process-step h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 14px;
            line-height: 1.65;
            color: var(--text-muted);
        }

        /* ========== 数据洞察 ========== */
        .data-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .data-box {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 26px 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-base);
        }

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

        .data-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--brand-primary);
            line-height: 1.2;
        }

        .data-number span {
            font-size: 22px;
        }

        .data-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 6px 0 4px;
        }

        .data-sub {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .data-insight-list {
            margin-top: 28px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .data-insight-list li {
            position: relative;
            padding-left: 26px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.6;
        }

        .data-insight-list li i {
            position: absolute;
            left: 0;
            top: 6px;
            color: var(--brand-secondary);
            font-size: 14px;
        }

        /* ========== 用户评价 ========== */
        .testimonial-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 28px 26px;
            box-shadow: var(--shadow-sm);
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: transform .3s ease, box-shadow .3s ease;
        }

        .testimonial-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }

        .testimonial-stars {
            color: #f5a623;
            font-size: 13px;
            letter-spacing: 2px;
            margin-bottom: 14px;
        }

        .testimonial-text {
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-body);
            flex: 1;
            margin-bottom: 20px;
        }

        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px dashed var(--border-light);
            padding-top: 16px;
        }

        .user-avatar {
            width: 40px;
            height: 40px;
            flex-shrink: 0;
            background: linear-gradient(135deg, rgba(30, 94, 255, .15), rgba(23, 195, 178, .15));
            color: var(--brand-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-size: 14px;
        }

        .user-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            display: block;
        }

        .user-tag {
            font-size: 12px;
            color: var(--text-muted);
            display: block;
        }

        /* ========== 资讯区 ========== */
        .insight-list {
            border-top: 1px solid var(--border-light);
        }

        .insight-item {
            padding: 20px 0;
            border-bottom: 1px solid var(--border-light);
            transition: padding .3s ease;
        }

        .insight-item:hover {
            padding-left: 10px;
        }

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

        .insight-date {
            font-size: 13px;
            color: var(--text-muted);
        }

        .insight-item h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 0;
        }

        .insight-item h3 a {
            color: var(--text-primary);
        }

        .insight-item h3 a:hover {
            color: var(--brand-primary);
        }

        .insight-item p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 6px 0 0;
        }

        .side-recommend {
            background: var(--bg-soft);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--border-light);
        }

        .side-recommend h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 18px;
            padding-bottom: 14px;
            border-bottom: 2px solid var(--brand-primary);
            display: inline-block;
        }

        .theme-list {
            display: flex;
            flex-direction: column;
            gap: 4px;
            margin-bottom: 20px;
        }

        .theme-list li a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 0;
            font-size: 15px;
            color: var(--text-body);
            border-bottom: 1px dashed var(--border-light);
            transition: var(--transition-base);
        }

        .theme-list li a i {
            color: var(--brand-primary);
            font-size: 12px;
        }

        .theme-list li a:hover {
            color: var(--brand-primary);
            padding-left: 6px;
        }

        /* ========== FAQ ========== */
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 26px 24px;
            height: 100%;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-base);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(30, 94, 255, .30);
        }

        .faq-item h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 12px;
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .faq-item h3 i {
            color: var(--brand-primary);
            margin-top: 3px;
            font-size: 18px;
        }

        .faq-item p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-body);
        }

        /* ========== CTA ========== */
        .cta-box {
            position: relative;
            background-size: cover;
            background-position: center;
            border-radius: var(--radius-xl);
            padding: 72px 48px;
            text-align: center;
            color: #fff;
            overflow: hidden;
        }

        .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(12, 36, 74, .92) 0%, rgba(10, 22, 40, .85) 100%);
        }

        .cta-content {
            position: relative;
            z-index: 1;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .cta-content p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 30px;
        }

        .cta-btns {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-dark);
            color: #9fb0c5;
            padding: 70px 0 0;
        }

        .footer-top {
            padding-bottom: 40px;
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-brand .brand-text {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: #8296ad;
            max-width: 360px;
        }

        .site-footer h4 {
            font-size: 16px;
            color: #fff;
            font-weight: 600;
            margin-bottom: 18px;
        }

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

        .footer-links a {
            font-size: 14px;
            color: #8296ad;
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 18px 0;
        }

        .footer-bottom p {
            margin: 0;
            font-size: 13px;
            color: #64788f;
            text-align: center;
        }

        .footer-domain {
            color: #8296ad;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991px) {
            .section {
                padding: 64px 0;
            }

            .hero-section {
                padding: 80px 0;
            }

            .hero-title {
                font-size: 34px;
            }

            .hero-panel {
                margin-top: 32px;
            }

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

            .navbar-nav {
                margin-top: 14px;
                margin-bottom: 8px;
            }

            .nav-cta {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 50px 0;
            }

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

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

            .hero-title {
                font-size: 30px;
            }

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

            .service-img {
                height: 180px;
            }

            .data-grid {
                gap: 14px;
            }

            .data-number {
                font-size: 28px;
            }

            .cta-box {
                padding: 48px 20px;
                border-radius: 16px;
            }

            .cta-content h2 {
                font-size: 28px;
            }

            .footer-top {
                padding-bottom: 24px;
            }
        }

        @media (max-width: 520px) {
            .brand-text {
                font-size: 15px;
            }

            .hero-btns {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-btns .btn {
                width: 100%;
                text-align: center;
            }

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

            .cta-btns .btn {
                width: 100%;
                text-align: center;
            }

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

            .service-meta {
                flex-direction: column;
                gap: 4px;
            }

            .hero-panel {
                padding: 24px;
            }

            .panel-title {
                font-size: 20px;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --brand-primary: #2c6fbb;
            --brand-primary-dark: #1f538f;
            --brand-primary-light: #e8f0fa;
            --brand-accent: #4d86c7;
            --brand-accent-soft: #f0f5fb;
            --bg-body: #f7fafc;
            --bg-white: #ffffff;
            --bg-soft: #eef3f8;
            --text-main: #1e2a36;
            --text-muted: #5c6b7a;
            --text-light: #8a9aaa;
            --border-color: #e2eaf2;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 12px rgba(31, 83, 143, 0.06);
            --shadow-md: 0 8px 28px rgba(31, 83, 143, 0.10);
            --shadow-lg: 0 16px 44px rgba(31, 83, 143, 0.15);
            --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 120px;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.75;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

        ul,
        ol {
            padding-left: 1.25rem;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
        }

        /* ===== 通用板块样式 ===== */
        .section {
            padding: 90px 0;
        }

        .section-head {
            max-width: 720px;
            margin: 0 auto 56px;
            text-align: center;
        }

        .section-tag {
            display: inline-block;
            background: var(--brand-primary-light);
            color: var(--brand-primary);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 40px;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: clamp(1.7rem, 3.2vw, 2.4rem);
            margin-bottom: 16px;
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 1.04rem;
        }

        /* ===== 按钮 ===== */
        .btn {
            border-radius: 50px;
            padding: 12px 28px;
            font-weight: 600;
            font-size: 0.96rem;
            transition: all 0.25s ease;
        }

        .btn-primary {
            background: var(--brand-primary);
            border-color: var(--brand-primary);
            box-shadow: 0 4px 16px rgba(44, 111, 187, 0.22);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--brand-primary-dark);
            border-color: var(--brand-primary-dark);
            box-shadow: 0 8px 24px rgba(44, 111, 187, 0.30);
            transform: translateY(-2px);
        }

        .btn-outline-primary {
            border-color: var(--brand-primary);
            color: var(--brand-primary);
        }

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

        .btn-outline-light {
            border-color: rgba(255, 255, 255, 0.7);
            color: #fff;
            background: transparent;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
        }

        .btn-lg {
            padding: 15px 36px;
            font-size: 1rem;
        }

        .btn:focus-visible {
            outline: 3px solid rgba(44, 111, 187, 0.4);
            outline-offset: 2px;
        }

        /* ===== Header / 导航 ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: var(--shadow-sm);
        }

        .navbar {
            padding: 14px 0;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--text-main);
        }

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

        .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            box-shadow: 0 4px 14px rgba(44, 111, 187, 0.25);
            flex-shrink: 0;
        }

        .brand-text {
            white-space: nowrap;
        }

        .navbar-nav .nav-link {
            padding: 10px 16px;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: 8px;
            transition: color 0.2s ease, background 0.2s ease;
        }

        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link:focus {
            color: var(--brand-primary);
            background: var(--brand-accent-soft);
        }

        .navbar-nav .nav-link.active {
            color: var(--brand-primary);
            font-weight: 600;
            background: var(--brand-primary-light);
        }

        .nav-cta {
            padding: 9px 24px;
            font-size: 0.9rem;
            margin-left: 12px;
        }

        .navbar-toggler {
            border: none;
            padding: 6px 10px;
        }

        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--brand-primary-light);
        }

        /* ===== 进度步骤导航 ===== */
        .nav-steps {
            background: var(--brand-accent-soft);
            border-bottom: 1px solid var(--border-color);
            padding: 10px 0;
        }

        .step-row {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: nowrap;
            gap: 12px;
        }

        .step-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 4px 12px;
            border-radius: 40px;
            transition: all 0.25s ease;
        }

        .step-item:hover {
            color: var(--brand-primary);
            background: rgba(255, 255, 255, 0.7);
        }

        .step-num {
            display: inline-flex;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--brand-primary);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 700;
            align-items: center;
            justify-content: center;
        }

        .step-line {
            width: 36px;
            height: 1px;
            background: #c6d6e8;
        }

        @media (max-width: 768px) {
            .nav-steps {
                display: none;
            }
        }

        /* ===== Hero 众筹预热 ===== */
        .hero-section {
            position: relative;
            padding: 110px 0 90px;
            background: linear-gradient(135deg, rgba(20, 45, 80, 0.92), rgba(31, 83, 143, 0.86)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.24);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 500;
            padding: 6px 18px;
            border-radius: 40px;
            margin-bottom: 24px;
            backdrop-filter: blur(6px);
        }

        .hero-content h1 {
            color: #fff;
            font-size: clamp(2rem, 4vw, 2.9rem);
            line-height: 1.25;
            margin-bottom: 20px;
        }

        .hero-sub {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.08rem;
            max-width: 540px;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 40px;
        }

        .hero-meta {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .meta-avatars {
            display: flex;
        }

        .avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.92);
            color: var(--brand-primary);
            font-size: 0.8rem;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-right: -10px;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }

        .avatar:last-child {
            background: rgba(255, 255, 255, 0.7);
            margin-right: 0;
        }

        .hero-meta p {
            margin: 0;
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.95rem;
        }

        .hero-meta strong {
            color: #fff;
            font-weight: 700;
        }

        /* 众筹预热面板 */
        .crowd-panel {
            background: rgba(255, 255, 255, 0.96);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-lg);
            color: var(--text-main);
        }

        .panel-head {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 26px;
        }

        .progress-ring-wrap {
            position: relative;
            flex-shrink: 0;
        }

        .progress-ring {
            width: 110px;
            height: 110px;
        }

        .ring-bg {
            stroke: #e3ecf5;
            stroke-width: 11;
            fill: none;
        }

        .ring-bar {
            stroke: var(--brand-primary);
            stroke-width: 11;
            fill: none;
            stroke-linecap: round;
            stroke-dasharray: 527.8;
            stroke-dashoffset: 63.3;
            transform: rotate(-90deg);
            transform-origin: 50% 50%;
            transition: stroke-dashoffset 1s ease;
        }

        .ring-center {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
        }

        .ring-num {
            display: block;
            font-size: 1.65rem;
            font-weight: 800;
            color: var(--brand-primary);
            line-height: 1.2;
        }

        .ring-label {
            font-size: 0.7rem;
            color: var(--text-muted);
            display: block;
            margin-top: 2px;
        }

        .panel-intro h3 {
            font-size: 1.2rem;
            margin-bottom: 6px;
        }

        .panel-intro p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        .tier-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 22px;
        }

        .tier-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 16px;
            background: var(--bg-soft);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
        }

        .tier-item:hover {
            border-color: var(--brand-primary);
            transform: translateX(4px);
            box-shadow: var(--shadow-sm);
        }

        .tier-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--brand-primary-light);
            color: var(--brand-primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .tier-info {
            flex: 1;
        }

        .tier-name {
            display: block;
            font-weight: 600;
            font-size: 0.95rem;
        }

        .tier-desc {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .tier-status {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--brand-primary);
            background: var(--brand-primary-light);
            padding: 4px 12px;
            border-radius: 40px;
            white-space: nowrap;
        }

        .panel-cta {
            width: 100%;
        }

        @media (max-width: 768px) {
            .crowd-panel {
                padding: 24px;
            }

            .progress-ring {
                width: 90px;
                height: 90px;
            }

            .panel-head {
                gap: 12px;
            }
        }

        /* ===== 痛点板块 ===== */
        .pain-section {
            padding: 90px 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
        }

        .pain-card {
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 30px 26px;
            height: 100%;
            transition: box-shadow 0.25s ease, transform 0.25s ease;
        }

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

        .pain-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: #fee2e2;
            color: #d6455d;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            margin-bottom: 18px;
        }

        .pain-card h3 {
            font-size: 1.12rem;
            margin-bottom: 10px;
        }

        .pain-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        /* ===== 指南核心板块 ===== */
        .guide-section {
            padding: 90px 0;
            background: var(--bg-body);
        }

        .guide-block {
            margin-bottom: 70px;
        }

        .guide-block:last-child {
            margin-bottom: 0;
        }

        .rounded-img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            object-fit: cover;
            width: 100%;
        }

        .step-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--brand-primary);
            background: var(--brand-primary-light);
            padding: 5px 16px;
            border-radius: 40px;
            margin-bottom: 14px;
        }

        .guide-block h3 {
            font-size: clamp(1.35rem, 2.5vw, 1.7rem);
            margin-bottom: 14px;
        }

        .guide-block .lead-text {
            color: var(--text-muted);
            font-size: 1rem;
            margin-bottom: 20px;
        }

        .guide-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .guide-list li {
            position: relative;
            padding-left: 34px;
            color: var(--text-main);
            line-height: 1.7;
        }

        .guide-list li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 2px;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: var(--brand-primary-light);
            color: var(--brand-primary);
            font-size: 0.7rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .guide-note {
            background: var(--brand-accent-soft);
            border-left: 4px solid var(--brand-primary);
            border-radius: 10px;
            padding: 16px 20px;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 20px;
        }

        .guide-note strong {
            color: var(--brand-primary);
        }

        /* ===== 成果数据 ===== */
        .results-section {
            padding: 90px 0;
            background: linear-gradient(135deg, #1f3a5e, #2c6fbb);
            color: #fff;
        }

        .results-section .section-head h2 {
            color: #fff;
        }

        .results-section .section-head p {
            color: rgba(255, 255, 255, 0.75);
        }

        .results-section .section-tag {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }

        .data-card {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius-md);
            padding: 36px 24px;
            text-align: center;
            transition: background 0.3s ease, transform 0.3s ease;
            backdrop-filter: blur(4px);
        }

        .data-card:hover {
            background: rgba(255, 255, 255, 0.13);
            transform: translateY(-4px);
        }

        .data-num {
            display: block;
            font-size: clamp(2rem, 4vw, 2.6rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .data-label {
            display: block;
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.8);
        }

        /* ===== 客户证言 ===== */
        .testimonial-section {
            padding: 90px 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
        }

        .testimonial-card {
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 30px 28px;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: box-shadow 0.25s ease, transform 0.25s ease;
        }

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

        .testimonial-stars {
            color: #f5a623;
            font-size: 0.85rem;
            letter-spacing: 2px;
            margin-bottom: 16px;
        }

        .testimonial-card blockquote {
            margin: 0 0 20px;
            flex: 1;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.75;
        }

        .testimonial-person {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--brand-primary-light);
            color: var(--brand-primary);
            font-weight: 700;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .testimonial-name {
            font-weight: 600;
            font-size: 0.95rem;
        }

        .testimonial-meta {
            font-size: 0.82rem;
            color: var(--text-light);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 90px 0;
            background: var(--bg-body);
        }

        .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.2s ease;
        }

        .accordion-item:focus-within {
            box-shadow: var(--shadow-md);
        }

        .accordion-button {
            font-weight: 600;
            color: var(--text-main);
            padding: 20px 24px;
            font-size: 1rem;
            background: var(--bg-white);
            transition: color 0.2s ease;
        }

        .accordion-button:not(.collapsed) {
            color: var(--brand-primary);
            background: var(--brand-accent-soft);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--brand-primary-light);
        }

        .accordion-button::after {
            color: var(--brand-primary);
        }

        .accordion-body {
            padding: 8px 24px 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
            background: var(--bg-white);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 90px 0;
            background: linear-gradient(135deg, rgba(20, 45, 80, 0.93), rgba(31, 83, 143, 0.88)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            color: #fff;
            text-align: center;
        }

        .cta-wrap {
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-wrap h2 {
            color: #fff;
            font-size: clamp(1.8rem, 3.4vw, 2.5rem);
            margin-bottom: 16px;
        }

        .cta-wrap p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.05rem;
            margin-bottom: 34px;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #152b42;
            color: rgba(255, 255, 255, 0.75);
            padding: 70px 0 0;
        }

        .footer-top {
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-brand:hover {
            color: #fff;
        }

        .footer-desc {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.92rem;
            max-width: 360px;
            line-height: 1.8;
            margin: 0;
        }

        .site-footer h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 5px;
        }

        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom p {
            margin: 0;
        }

        .footer-domain {
            color: rgba(255, 255, 255, 0.55);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .navbar-nav {
                padding: 16px 0;
            }

            .nav-cta {
                margin-left: 0;
                margin-top: 10px;
            }

            .hero-section {
                padding: 80px 0 64px;
            }

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

            .hero-sub {
                margin-left: auto;
                margin-right: auto;
            }

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

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

            .crowd-panel {
                margin-top: 40px;
            }

            .section {
                padding: 70px 0;
            }

            .guide-block {
                margin-bottom: 50px;
            }
        }

        @media (max-width: 767.98px) {
            .hero-section {
                padding: 60px 0 50px;
            }

            .hero-content h1 {
                font-size: 1.75rem;
            }

            .hero-sub {
                font-size: 0.98rem;
            }

            .section {
                padding: 56px 0;
            }

            .section-head {
                margin-bottom: 40px;
            }

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

            .guide-block {
                margin-bottom: 44px;
            }

            .accordion-button {
                font-size: 0.92rem;
                padding: 18px;
            }

            .accordion-body {
                padding: 6px 18px 18px;
            }

            .step-line {
                display: none;
            }

            .step-row {
                gap: 4px;
            }

            .step-item {
                padding: 4px 8px;
                font-size: 0.8rem;
            }

            .data-card {
                padding: 24px 16px;
            }
        }

        @media (max-width: 520px) {
            .hero-actions .btn {
                width: 100%;
                margin-bottom: 6px;
            }

            .crowd-panel {
                padding: 20px;
                border-radius: 16px;
            }

            .panel-head {
                flex-direction: column;
                text-align: center;
            }

            .tier-item {
                flex-wrap: wrap;
                gap: 8px;
            }

            .tier-status {
                padding: 2px 10px;
                font-size: 0.7rem;
            }

            .footer-top {
                gap: 24px;
            }

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