/* roulang page: index */
:root {
            --primary: #0d5fa8;
            --primary-soft: #eaf3fc;
            --accent: #0b3e6f;
            --gold: #b89050;
            --bg: #f8fafd;
            --card: #ffffff;
            --ink: #16222c;
            --text-gray: #5b6b7a;
            --border-light: rgba(13, 95, 168, .1);
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 8px 24px rgba(13, 95, 168, .08);
            --shadow-hover: 0 12px 32px rgba(13, 95, 168, .12);
            --shadow-nav: 0 4px 20px rgba(13, 95, 168, .07);
            --section-gap: 96px;
            --transition: .25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
            background: var(--bg);
            color: var(--ink);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

        a:hover {
            color: var(--accent);
            text-decoration: none;
        }

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

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

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section-gap {
            padding: var(--section-gap) 0;
        }

        @media (max-width: 992px) {
            :root {
                --section-gap: 72px;
            }
        }

        @media (max-width: 576px) {
            :root {
                --section-gap: 48px;
            }
        }

        /* 顶栏 */
        .top-bar {
            height: 36px;
            background: #eef5fc;
            border-bottom: 1px solid var(--border-light);
            font-size: 13px;
            color: var(--text-gray);
            display: flex;
            align-items: center;
        }

        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .top-bar i {
            margin-right: 5px;
            color: var(--primary);
            font-size: 12px;
        }

        .top-bar a {
            color: var(--text-gray);
        }

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

        /* 导航 */
        .navbar-custom {
            height: 74px;
            background: rgba(255, 255, 255, .72);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-light);
            padding: 0;
            transition: background var(--transition), box-shadow var(--transition);
            position: sticky;
            top: 0;
            z-index: 1050;
        }

        .navbar-custom.scrolled {
            background: rgba(255, 255, 255, .92);
            box-shadow: var(--shadow-nav);
        }

        .navbar-custom .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            position: relative;
            flex-wrap: nowrap;
        }

        .navbar-brand-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--accent);
            white-space: nowrap;
            line-height: 1.3;
            letter-spacing: .5px;
        }

        .navbar-brand-custom i {
            font-size: 24px;
            color: var(--primary);
        }

        .navbar-brand-custom span {
            color: var(--primary);
        }

        .navbar-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .navbar-links a {
            color: var(--ink);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 2px;
            position: relative;
            background: transparent;
            border: 0;
            text-decoration: none;
            transition: color var(--transition);
        }

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

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

        .navbar-links a:hover::after {
            transform: scaleX(1);
        }

        .navbar-links a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .navbar-links a.active::after {
            transform: scaleX(1);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .lang-switch {
            display: inline-flex;
            background: #eef3f8;
            border-radius: 999px;
            padding: 4px;
            border: 1px solid var(--border-light);
        }

        .lang-switch a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 4px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-gray);
            transition: all var(--transition);
            background: transparent;
            border: 0;
            line-height: 1.4;
        }

        .lang-switch a:hover {
            color: var(--primary);
            background: rgba(13, 95, 168, .08);
        }

        .lang-switch a.active-lang {
            background: var(--accent);
            color: #fff;
        }

        .lang-switch a.active-lang:hover {
            background: var(--accent);
            color: #fff;
        }

        .btn-cta-nav {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--accent);
            color: #fff;
            border: 0;
            border-radius: var(--radius-sm);
            height: 48px;
            padding: 0 24px;
            font-size: 15px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(11, 62, 111, .18);
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }

        .btn-cta-nav:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-4px);
            box-shadow: 0 10px 22px rgba(13, 95, 168, .22);
        }

        .btn-cta-nav:active {
            transform: translateY(-1px);
            background: var(--accent);
        }

        .btn-cta-nav:focus-visible,
        .lang-switch a:focus-visible,
        .navbar-links a:focus-visible,
        .btn-primary-custom:focus-visible,
        .btn-outline-custom:focus-visible {
            outline: 3px solid rgba(13, 95, 168, .35);
            outline-offset: 2px;
        }

        .navbar-toggler-custom {
            display: none;
            background: transparent;
            border: 1px solid var(--border-light);
            border-radius: 10px;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--accent);
            font-size: 20px;
            transition: all var(--transition);
            z-index: 1060;
        }

        .navbar-toggler-custom:hover {
            background: var(--primary-soft);
            border-color: var(--primary);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            width: min(320px, 85vw);
            height: 100vh;
            background: #fff;
            z-index: 1090;
            padding: 90px 28px 32px;
            box-shadow: -8px 0 30px rgba(13, 95, 168, .15);
            flex-direction: column;
            gap: 20px;
            transform: translateX(105%);
            transition: transform .3s ease;
            border-left: 1px solid var(--border-light);
        }

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

        .mobile-menu a {
            font-size: 17px;
            color: var(--ink);
            font-weight: 500;
            padding: 10px 0;
            border-bottom: 1px solid #f0f4f8;
            text-decoration: none;
        }

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

        .mobile-menu .lang-switch {
            margin-top: 12px;
            align-self: flex-start;
        }

        .menu-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(11, 30, 50, .45);
            z-index: 1080;
            backdrop-filter: blur(2px);
        }

        .menu-overlay.show {
            display: block;
        }

        /* Hero 首屏 */
        .hero {
            position: relative;
            min-height: 80vh;
            display: flex;
            align-items: center;
            padding: 80px 0 60px;
            background: url('/assets/images/backpic/back-1.jpg') center center / cover no-repeat;
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(234, 243, 252, .92) 0%, rgba(255, 255, 255, .82) 45%, rgba(234, 243, 252, .68) 100%);
        }

        .hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-content {
            max-width: 760px;
            padding: 24px 0 32px;
        }

        .hero-tagline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .72);
            border: 1px solid var(--border-light);
            border-radius: 999px;
            padding: 6px 18px;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            margin-bottom: 20px;
            backdrop-filter: blur(6px);
        }

        .hero h1 {
            font-size: 46px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--accent);
            letter-spacing: -.5px;
            margin-bottom: 18px;
        }

        .hero-sub {
            font-size: 18px;
            color: var(--text-gray);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 600px;
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 48px;
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--accent);
            color: #fff;
            border: 0;
            border-radius: var(--radius-sm);
            height: 48px;
            padding: 0 32px;
            font-size: 16px;
            font-weight: 600;
            box-shadow: 0 6px 18px rgba(11, 62, 111, .16);
            transition: all var(--transition);
            text-decoration: none;
            cursor: pointer;
            line-height: 1;
        }

        .btn-primary-custom:hover {
            background: rgba(13, 95, 168, .9);
            color: #fff;
            transform: translateY(-4px);
            box-shadow: 0 12px 28px rgba(13, 95, 168, .24);
        }

        .btn-primary-custom:active {
            transform: translateY(-1px);
            background: var(--accent);
        }

        .btn-primary-custom i {
            margin-left: 8px;
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, .7);
            color: var(--accent);
            border: 2px solid rgba(13, 95, 168, .35);
            border-radius: var(--radius-sm);
            height: 48px;
            padding: 0 28px;
            font-size: 16px;
            font-weight: 600;
            transition: all var(--transition);
            text-decoration: none;
            cursor: pointer;
            line-height: 1;
        }

        .btn-outline-custom:hover {
            background: var(--primary-soft);
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-outline-custom:active {
            background: rgba(13, 95, 168, .15);
        }

        .btn-outline-custom i {
            margin-left: 6px;
            font-size: 14px;
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            background: rgba(255, 255, 255, .78);
            backdrop-filter: blur(10px);
            border-radius: var(--radius);
            padding: 24px 32px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(255, 255, 255, .6);
            justify-content: space-between;
            gap: 24px;
        }

        .hero-stat-item {
            flex: 1 1 160px;
            border-left: 1px solid var(--border-light);
            padding-left: 24px;
        }

        .hero-stat-item:first-child {
            border-left: 0;
            padding-left: 0;
        }

        .hero-stat-item .stat-num {
            font-size: 32px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
            letter-spacing: -.5px;
        }

        .hero-stat-item .stat-label {
            font-size: 13px;
            color: var(--text-gray);
            margin-top: 4px;
        }

        /* 指标看板 */
        .metrics-section {
            background: transparent;
            padding: 0;
            margin-top: -40px;
            position: relative;
            z-index: 3;
        }

        .metrics-panel {
            background: var(--primary-soft);
            border-radius: 20px;
            padding: 40px 36px;
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr 1fr;
            gap: 20px;
        }

        .metric-card {
            background: var(--card);
            border-radius: var(--radius);
            padding: 24px 22px;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition), box-shadow var(--transition);
            border: 1px solid rgba(255, 255, 255, .8);
        }

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

        .metric-card .metric-name {
            font-size: 14px;
            color: var(--text-gray);
            margin-bottom: 8px;
        }

        .metric-card .metric-value {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -1px;
        }

        .metric-card .metric-trend {
            font-size: 13px;
            color: var(--text-gray);
            margin-top: 10px;
        }

        .metric-card .metric-trend i {
            color: #2e9444;
            font-size: 12px;
            margin-right: 4px;
        }

        .metrics-intro {
            background: var(--accent);
            border-radius: var(--radius);
            padding: 30px 28px;
            color: #fff;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .metrics-intro h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .metrics-intro p {
            font-size: 14px;
            color: rgba(255, 255, 255, .85);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* 板块标题 */
        .section-head {
            max-width: 700px;
            margin-bottom: 48px;
        }

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

        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.3;
            letter-spacing: -.3px;
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-gray);
            line-height: 1.8;
        }

        @media (max-width: 576px) {
            .section-head h2 {
                font-size: 24px;
            }
        }

        /* 服务矩阵 */
        .services-section {
            position: relative;
        }

        .service-card {
            background: var(--card);
            border-radius: var(--radius);
            border: 1px solid rgba(13, 95, 168, .08);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(13, 95, 168, .25);
        }

        .service-card .card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #dfeaf4;
        }

        .service-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .service-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }

        .service-card .card-img-wrap::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 62, 111, 0) 60%, rgba(11, 62, 111, .3) 100%);
        }

        .service-card .card-body-custom {
            padding: 22px 22px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .service-card .service-name {
            font-size: 18px;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .service-card .service-desc {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .service-card .card-footer-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            padding-top: 14px;
            border-top: 1px solid #f0f4f8;
        }

        .price-badge {
            display: inline-flex;
            align-items: center;
            background: rgba(184, 144, 80, .14);
            color: var(--gold);
            font-size: 13px;
            font-weight: 600;
            border-radius: 999px;
            padding: 4px 14px;
            line-height: 1.6;
        }

        .btn-service-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            background: transparent;
            border: 0;
            padding: 4px 0;
            cursor: pointer;
            transition: all var(--transition);
        }

        .btn-service-link:hover {
            color: var(--accent);
            gap: 8px;
        }

        .btn-service-link i {
            font-size: 12px;
            transition: transform var(--transition);
        }

        .btn-service-link:hover i {
            transform: translateX(4px);
        }

        /* 结果对比 */
        .compare-section {
            position: relative;
        }

        .compare-card {
            background: var(--card);
            border-radius: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(13, 95, 168, .07);
            padding: 48px;
            position: relative;
            overflow: hidden;
        }

        .compare-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 2px;
            height: 100%;
            background: linear-gradient(180deg, var(--border-light), var(--primary), var(--border-light));
            opacity: .3;
        }

        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
        }

        .compare-col h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .compare-col.bad h3 {
            color: var(--text-gray);
        }

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

        .compare-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            font-size: 15px;
            line-height: 1.7;
            color: var(--ink);
            border-bottom: 1px dashed #edf2f7;
        }

        .compare-list li:last-child {
            border-bottom: 0;
        }

        .compare-list .icon-bad {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: #f1f3f5;
            color: #9aa7b1;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: 700;
            margin-top: 4px;
        }

        .compare-list .icon-good {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: #e3f5ea;
            color: #2e9444;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: 700;
            margin-top: 4px;
        }

        .compare-arrow {
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
            background: var(--primary);
            color: #fff;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            z-index: 2;
            box-shadow: 0 6px 16px rgba(13, 95, 168, .3);
            border: 3px solid #fff;
        }

        /* FAQ */
        .faq-section {
            background: var(--primary-soft);
            border-radius: 24px;
            padding: 56px 24px;
            margin: var(--section-gap) auto;
        }

        @media (max-width: 992px) {
            .faq-section {
                border-radius: 18px;
                padding: 40px 16px;
            }
        }

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

        .faq-accordion .accordion-item {
            background: #fff;
            border: 0;
            border-radius: 12px !important;
            margin-bottom: 12px;
            box-shadow: 0 2px 8px rgba(13, 95, 168, .05);
            border-left: 3px solid transparent;
            transition: border-color var(--transition);
        }

        .faq-accordion .accordion-item.active {
            border-left-color: var(--primary);
        }

        .faq-accordion .accordion-button {
            font-size: 18px;
            font-weight: 600;
            color: var(--accent);
            background: transparent;
            padding: 18px 22px;
            border: 0;
            box-shadow: none;
            border-radius: 12px !important;
            line-height: 1.5;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(234, 243, 252, .4);
            color: var(--accent);
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            outline: 3px solid rgba(13, 95, 168, .2);
        }

        .faq-accordion .accordion-button::after {
            background-size: 14px;
            opacity: .6;
            transition: transform var(--transition);
        }

        .faq-accordion .accordion-body {
            padding: 16px 22px 22px;
            font-size: 15px;
            color: var(--text-gray);
            line-height: 1.8;
            border-top: 1px solid #f0f4f8;
            background: #fff;
            border-radius: 0 0 12px 12px;
        }

        /* 转化表单 */
        .contact-section {
            background: var(--card);
            border-radius: 24px;
            box-shadow: var(--shadow-card);
            overflow: hidden;
            border: 1px solid rgba(13, 95, 168, .06);
        }

        .contact-info-wrap {
            background: linear-gradient(135deg, var(--accent) 0%, #0b4b7a 100%);
            padding: 48px 40px;
            color: #fff;
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            border-radius: 0;
        }

        .contact-info-wrap h3 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.2px;
        }

        .contact-info-wrap p {
            font-size: 15px;
            color: rgba(255, 255, 255, .78);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .contact-info-list {
            list-style: none;
            padding: 0;
            margin: 0 0 32px;
        }

        .contact-info-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 10px 0;
            font-size: 15px;
            color: rgba(255, 255, 255, .92);
            line-height: 1.6;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
        }

        .contact-info-list li i {
            color: #9ec9f0;
            margin-top: 4px;
            width: 18px;
            text-align: center;
        }

        .qr-placeholder {
            width: 120px;
            height: 120px;
            background: #fff;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            background-image: linear-gradient(45deg, #e5eef7 25%, transparent 25%), linear-gradient(-45deg, #e5eef7 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #e5eef7 75%), linear-gradient(-45deg, transparent 75%, #e5eef7 75%);
            background-size: 16px 16px;
            background-position: 0 0, 0 8px, 8px -8px, -8px 0;
            border: 4px solid #fff;
            box-shadow: 0 4px 14px rgba(0, 0, 0, .15);
        }

        .qr-wrap .qr-label {
            font-size: 13px;
            color: rgba(255, 255, 255, .7);
            margin-top: 10px;
            text-align: center;
        }

        .form-card {
            padding: 48px 44px;
        }

        .form-card h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 6px;
        }

        .form-card .form-sub {
            font-size: 14px;
            color: var(--text-gray);
            margin-bottom: 32px;
        }

        .form-label-custom {
            font-size: 14px;
            font-weight: 500;
            color: var(--ink);
            margin-bottom: 6px;
        }

        .form-control-custom,
        .form-select-custom {
            width: 100%;
            height: 48px;
            border-radius: var(--radius-sm);
            border: 1px solid #d5e2ee;
            background: #f9fbfd;
            padding: 0 16px;
            font-size: 15px;
            color: var(--ink);
            transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
            margin-bottom: 18px;
        }

        .form-control-custom:focus,
        .form-select-custom:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(13, 95, 168, .18);
            background: #fff;
        }

        textarea.form-control-custom {
            height: auto;
            min-height: 120px;
            padding: 14px 16px;
            resize: vertical;
            line-height: 1.7;
        }

        .btn-submit-form {
            width: 100%;
            height: 52px;
            background: var(--accent);
            color: #fff;
            border: 0;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 700;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(11, 62, 111, .18);
        }

        .btn-submit-form:hover {
            background: var(--primary);
            box-shadow: 0 8px 20px rgba(13, 95, 168, .26);
        }

        .btn-submit-form:active {
            background: #09355f;
            transform: translateY(1px);
        }

        .btn-submit-form:focus-visible {
            outline: 3px solid rgba(13, 95, 168, .4);
            outline-offset: 2px;
        }

        /* 资讯推荐区 */
        .info-section {
            background: var(--card);
            border-radius: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(13, 95, 168, .06);
            overflow: hidden;
        }

        .info-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            min-height: 320px;
        }

        .info-list-wrap {
            padding: 44px 40px;
        }

        .info-list-wrap h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 24px;
        }

        .info-list-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .info-list-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 13px 8px;
            border-bottom: 1px dashed #edf2f7;
            font-size: 15px;
            color: var(--ink);
            transition: all var(--transition);
            border-radius: 8px;
            text-decoration: none;
        }

        .info-list-item:hover {
            background: var(--primary-soft);
            color: var(--primary);
            padding-left: 14px;
        }

        .info-list-item .info-tag {
            flex-shrink: 0;
            background: rgba(13, 95, 168, .1);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            padding: 2px 12px;
        }

        .info-list-item .info-date {
            flex-shrink: 0;
            font-size: 12px;
            color: #9aa7b1;
        }

        .info-side {
            background: linear-gradient(135deg, var(--primary-soft), #f0f6fc);
            padding: 44px 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            border-left: 1px solid rgba(13, 95, 168, .06);
        }

        .info-side h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 14px;
        }

        .info-side p {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .info-strength-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .info-strength-list li {
            font-size: 14px;
            color: var(--ink);
            padding: 6px 0;
            display: flex;
            gap: 8px;
            align-items: flex-start;
        }

        .info-strength-list li i {
            color: var(--primary);
            margin-top: 4px;
            font-size: 12px;
        }

        /* 页脚 */
        .footer {
            background: var(--accent);
            color: #fff;
            padding: 64px 0 28px;
            margin-top: var(--section-gap);
        }

        @media (max-width: 992px) {
            .footer {
                padding: 48px 0 24px;
            }
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand i {
            color: #9ec9f0;
            font-size: 22px;
        }

        .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, .65);
            line-height: 1.8;
            max-width: 400px;
            margin-bottom: 24px;
        }

        .footer-links {
            display: flex;
            justify-content: center;
            gap: 24px;
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links a {
            color: rgba(255, 255, 255, .78);
            font-size: 14px;
            transition: color var(--transition);
            padding: 4px 0;
            text-decoration: none;
        }

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

        .footer-copy {
            border-top: 1px solid rgba(255, 255, 255, .12);
            padding-top: 24px;
            margin-top: 36px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, .45);
            line-height: 1.7;
        }

        .footer-copy .tech-info {
            margin-left: 12px;
            padding-left: 12px;
            border-left: 1px solid rgba(255, 255, 255, .15);
            font-size: 12px;
            color: rgba(255, 255, 255, .3);
        }

        /* Bootstrap 默认样式覆盖 */
        .accordion {
            --bs-accordion-bg: transparent;
            --bs-accordion-border-color: transparent;
            --bs-accordion-btn-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%230d5fa8'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
            --bs-accordion-btn-active-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%230d5fa8'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
        }

        .accordion-button.collapsed::after {
            opacity: .5;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .metrics-panel {
                grid-template-columns: 1fr 1fr 1fr 1fr;
                gap: 14px;
                padding: 28px 20px;
            }

            .metric-card {
                padding: 20px 16px;
            }

            .metric-card .metric-value {
                font-size: 28px;
            }
        }

        @media (max-width: 992px) {
            .navbar-links {
                display: none;
            }

            .navbar-toggler-custom {
                display: inline-flex;
            }

            .navbar-brand-custom {
                font-size: 18px;
            }

            .metrics-panel {
                grid-template-columns: 1fr 1fr;
            }

            .metrics-intro {
                grid-column: span 2;
            }

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

            .compare-card::before {
                left: 0;
                top: 50%;
                transform: translateY(-50%);
                width: 2px;
                height: 50px;
                display: none;
            }

            .compare-arrow {
                display: none;
            }

            .info-layout {
                grid-template-columns: 1fr;
            }

            .info-side {
                border-left: 0;
                border-top: 1px solid rgba(13, 95, 168, .06);
            }

            .hero {
                padding: 60px 0 80px;
            }

            .hero h1 {
                font-size: 34px;
            }

            .hero-sub {
                font-size: 17px;
            }

            .hero-stats {
                padding: 20px;
            }

            .hero-stat-item {
                flex: 1 1 130px;
            }

            .contact-info-wrap {
                border-radius: 24px 24px 0 0;
            }
        }

        @media (max-width: 768px) {
            .section-gap {
                padding: 48px 0;
            }

            .metric-card {
                padding: 18px 14px;
            }

            .metric-card .metric-value {
                font-size: 28px;
            }

            .compare-card {
                padding: 32px 22px;
            }

            .form-card {
                padding: 32px 22px;
            }

            .info-list-wrap {
                padding: 32px 22px;
            }

            .info-side {
                padding: 32px 22px;
            }

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

            .footer-desc {
                font-size: 13px;
            }

            .footer-links {
                flex-wrap: wrap;
                gap: 12px 20px;
            }

            .footer-links a {
                font-size: 13px;
            }

            .footer-copy {
                flex-direction: column;
                gap: 4px;
                font-size: 12px;
            }

            .footer-copy .tech-info {
                border-left: 0;
                margin-left: 0;
                padding-left: 0;
                display: block;
                margin-top: 4px;
            }
        }

        @media (max-width: 576px) {
            .hero h1 {
                font-size: 30px;
            }

            .hero-sub {
                font-size: 16px;
            }

            .hero-buttons .btn-primary-custom,
            .hero-buttons .btn-outline-custom {
                width: 100%;
            }

            .hero-stats {
                gap: 12px;
                padding: 16px;
            }

            .hero-stat-item {
                flex: 1 1 100%;
                border-left: 0;
                border-top: 1px solid var(--border-light);
                padding-left: 0;
                padding-top: 12px;
            }

            .hero-stat-item:first-child {
                border-top: 0;
                padding-top: 0;
            }

            .hero-stat-item .stat-num {
                font-size: 26px;
            }

            .metrics-panel {
                grid-template-columns: 1fr;
                padding: 20px 16px;
            }

            .metrics-intro {
                grid-column: span 1;
            }

            .service-card .card-row-actions {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

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

        /* 浮动装饰 */
        .floating-entry {
            position: fixed;
            bottom: 28px;
            right: 28px;
            z-index: 1050;
            display: flex;
            flex-direction: column;
            gap: 12px;
            align-items: center;
            opacity: 0;
            pointer-events: none;
            transform: translateY(20px);
            transition: opacity .4s ease, transform .4s ease;
        }

        .floating-entry.show {
            opacity: 1;
            pointer-events: auto;
            transform: translateY(0);
        }

        .floating-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: 0 8px 20px rgba(11, 62, 111, .3);
            transition: all var(--transition);
            border: 0;
            cursor: pointer;
        }

        .floating-btn:hover {
            background: var(--primary);
            transform: translateY(-3px);
            box-shadow: 0 12px 26px rgba(13, 95, 168, .36);
            color: #fff;
        }

        .floating-tip {
            font-size: 12px;
            background: #fff;
            border-radius: 999px;
            padding: 4px 14px;
            box-shadow: var(--shadow-card);
            color: var(--accent);
            font-weight: 600;
            border: 1px solid var(--border-light);
            white-space: nowrap;
        }