/* roulang page: index */
:root {
            --primary: #16324f;
            --primary-light: #2c5d8f;
            --primary-soft: #eef3f7;
            --accent: #c9a65c;
            --accent-soft: #f6f0e3;
            --bg: #f5f7fa;
            --surface: #ffffff;
            --text: #1a2b3c;
            --text-weak: #5c6f82;
            --border: #dde5ed;
            --border-light: #eef2f6;
            --success: #2d7a5f;
            --danger: #b85450;
            --radius-sm: 8px;
            --radius: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(22, 50, 79, 0.06);
            --shadow: 0 8px 28px rgba(22, 50, 79, 0.1);
            --shadow-lg: 0 16px 48px rgba(22, 50, 79, 0.14);
            --space-1: 8px;
            --space-2: 16px;
            --space-3: 24px;
            --space-4: 40px;
            --space-5: 64px;
            --space-6: 80px;
            --font-base: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', sans-serif;
            --transition: 0.22s ease;
            --max-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-base);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        button {
            cursor: pointer;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition), color var(--transition);
        }

        button:focus-visible, a:focus-visible, input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-3);
            width: 100%;
        }

        /* ===== 顶部信息条 ===== */
        .top-bar {
            background: #0d1f2e;
            color: rgba(255, 255, 255, 0.82);
            font-size: 0.82rem;
            padding: 6px 0;
            display: none;
        }
        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .top-bar__left {
            display: flex;
            gap: var(--space-2);
            align-items: center;
        }
        .top-bar__right {
            display: flex;
            gap: var(--space-2);
            align-items: center;
        }
        .top-bar a:hover {
            color: var(--accent);
        }

        /* ===== 导航 ===== */
        .site-header {
            background: var(--primary);
            color: #fff;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(22, 50, 79, 0.18);
        }
        .site-header__inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: var(--space-3);
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: #fff;
            white-space: nowrap;
        }
        .logo__icon {
            width: 38px;
            height: 38px;
            background: var(--accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--primary);
            font-weight: 800;
            flex-shrink: 0;
        }
        .logo:hover {
            color: var(--accent);
        }
        .logo:hover .logo__icon {
            background: #fff;
            color: var(--primary);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--space-1);
            margin-left: auto;
        }
        .main-nav a {
            color: rgba(255, 255, 255, 0.86);
            font-size: 0.95rem;
            padding: 8px 18px;
            border-radius: 8px;
            position: relative;
            letter-spacing: 0.01em;
            transition: background var(--transition), color var(--transition);
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
        }
        .main-nav a.active {
            background: var(--accent);
            color: var(--primary);
            font-weight: 600;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: var(--space-2);
            flex-shrink: 0;
        }
        .header-actions__hotline {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.8);
            display: flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .header-actions__hotline strong {
            color: var(--accent);
            font-size: 0.95rem;
        }
        .btn-header {
            background: rgba(255, 255, 255, 0.14);
            color: #fff;
            padding: 8px 18px;
            border-radius: 8px;
            font-size: 0.88rem;
            white-space: nowrap;
            transition: background var(--transition), color var(--transition);
        }
        .btn-header:hover {
            background: #fff;
            color: var(--primary);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            padding: 4px 8px;
            border-radius: 8px;
            line-height: 1;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        /* ===== Hero 白皮书获客 ===== */
        .hero {
            position: relative;
            background: var(--primary);
            color: #fff;
            overflow: hidden;
            min-height: 620px;
            display: flex;
            align-items: center;
            padding: var(--space-6) 0;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            z-index: 0;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 31, 46, 0.92) 0%, rgba(22, 50, 79, 0.55) 55%, rgba(13, 31, 46, 0.7) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: var(--space-5);
            align-items: center;
        }
        .hero__content {
            padding-right: var(--space-2);
        }
        .hero__tag {
            display: inline-block;
            background: var(--accent);
            color: var(--primary);
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: var(--space-2);
        }
        .hero__title {
            font-size: clamp(2rem, 4.5vw, 3.2rem);
            line-height: 1.22;
            font-weight: 700;
            letter-spacing: -0.01em;
            margin-bottom: var(--space-3);
            color: #fff;
        }
        .hero__title em {
            font-style: normal;
            color: var(--accent);
        }
        .hero__desc {
            font-size: 1.02rem;
            color: rgba(255, 255, 255, 0.86);
            max-width: 580px;
            line-height: 1.85;
            margin-bottom: var(--space-3);
        }
        .hero__stats {
            display: flex;
            gap: var(--space-4);
            flex-wrap: wrap;
            margin-bottom: var(--space-3);
        }
        .hero__stat {
            text-align: left;
        }
        .hero__stat-value {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero__stat-label {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.72);
        }
        .hero__cta {
            display: flex;
            gap: var(--space-2);
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 10px;
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            border: 2px solid transparent;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary);
        }
        .btn-primary:hover {
            background: #dbb978;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(201, 166, 92, 0.3);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.55);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* Hero 右侧：资料封面 + 留资 */
        .hero__lead-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            color: var(--text);
            max-width: 420px;
            margin-left: auto;
        }
        .hero__lead-media {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .hero__lead-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero__lead-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(22, 50, 79, 0.55) 100%);
        }
        .hero__lead-media-badge {
            position: absolute;
            bottom: 10px;
            left: 14px;
            z-index: 2;
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(13, 31, 46, 0.7);
            padding: 4px 12px;
            border-radius: 6px;
        }
        .hero__lead-body {
            padding: var(--space-3);
        }
        .hero__lead-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .hero__lead-toc {
            list-style: none;
            padding: 0;
            margin: 0 0 var(--space-2);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 6px 14px;
        }
        .hero__lead-toc li {
            font-size: 0.82rem;
            color: var(--text-weak);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hero__lead-toc li::before {
            content: '✓';
            color: var(--success);
            font-weight: 700;
            font-size: 0.85rem;
        }
        .hero__lead-form {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .form-row {
            display: flex;
            gap: 10px;
        }
        .form-row input {
            flex: 1;
            padding: 10px 14px;
            border: 1.5px solid var(--border);
            border-radius: 8px;
            font-size: 0.88rem;
            transition: border-color var(--transition), box-shadow var(--transition);
            background: #fafbfc;
            min-width: 0;
        }
        .form-row input:focus {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(44, 93, 143, 0.12);
            background: #fff;
        }
        .btn-submit {
            background: var(--primary);
            color: #fff;
            padding: 11px 20px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.02em;
        }
        .btn-submit:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
        }
        .hero__lead-note {
            font-size: 0.72rem;
            color: var(--text-weak);
            margin-top: 4px;
            text-align: center;
        }

        /* ===== 城市切换条 ===== */
        .city-strip {
            background: var(--surface);
            border-bottom: 1px solid var(--border-light);
            padding: 14px 0;
        }
        .city-strip__inner {
            display: flex;
            align-items: center;
            gap: var(--space-2);
            overflow-x: auto;
            scrollbar-width: thin;
            -webkit-overflow-scrolling: touch;
        }
        .city-strip__label {
            font-size: 0.85rem;
            color: var(--text-weak);
            font-weight: 600;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .city-chip {
            padding: 7px 18px;
            border-radius: 20px;
            font-size: 0.83rem;
            background: var(--bg);
            color: var(--text);
            border: 1.5px solid var(--border);
            white-space: nowrap;
            cursor: pointer;
            transition: all var(--transition);
        }
        .city-chip:hover {
            border-color: var(--primary-light);
            color: var(--primary-light);
            background: var(--primary-soft);
        }
        .city-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--space-6) 0;
        }
        .section--gray {
            background: #eef2f6;
        }
        .section--white {
            background: #fff;
        }
        .section--dark {
            background: var(--primary);
            color: #fff;
        }
        .section__header {
            margin-bottom: var(--space-4);
        }
        .section__label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .section__title {
            font-size: clamp(1.5rem, 3vw, 2.1rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--primary);
            letter-spacing: -0.01em;
        }
        .section__desc {
            font-size: 0.96rem;
            color: var(--text-weak);
            max-width: 680px;
            line-height: 1.8;
            margin-top: 10px;
        }
        .section--dark .section__title {
            color: #fff;
        }
        .section--dark .section__desc {
            color: rgba(255, 255, 255, 0.72);
        }

        /* ===== 优惠阶梯（会员等级） ===== */
        .membership-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-3);
            align-items: stretch;
        }
        .mem-card {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1.5px solid var(--border);
            padding: var(--space-3);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
        }
        .mem-card:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }
        .mem-card--featured {
            border-color: var(--accent);
            background: linear-gradient(180deg, #fffdf6 0%, #ffffff 100%);
        }
        .mem-card--featured::before {
            content: '热门推荐';
            position: absolute;
            top: 16px;
            right: -34px;
            background: var(--accent);
            color: var(--primary);
            font-size: 0.72rem;
            font-weight: 700;
            padding: 4px 38px;
            transform: rotate(45deg);
            letter-spacing: 0.05em;
        }
        .mem-card__badge {
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--primary-light);
            letter-spacing: 0.05em;
            margin-bottom: 4px;
        }
        .mem-card__name {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .mem-card__price {
            font-size: 0.9rem;
            color: var(--text-weak);
            margin-bottom: var(--space-2);
        }
        .mem-card__price strong {
            font-size: 2.2rem;
            color: var(--primary);
            font-weight: 800;
            margin-right: 2px;
        }
        .mem-card__price span {
            font-size: 0.85rem;
        }
        .mem-card__benefits {
            list-style: none;
            padding: 0;
            margin: 0 0 var(--space-2);
            flex: 1;
        }
        .mem-card__benefits li {
            font-size: 0.85rem;
            color: var(--text-weak);
            padding: 6px 0;
            border-bottom: 1px dashed var(--border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .mem-card__benefits li::before {
            content: '✓';
            color: var(--success);
            font-weight: 700;
            flex-shrink: 0;
        }
        .btn-mem {
            background: var(--primary);
            color: #fff;
            padding: 11px 20px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.88rem;
            text-align: center;
            letter-spacing: 0.02em;
        }
        .btn-mem:hover {
            background: var(--primary-light);
        }
        .btn-mem--accent {
            background: var(--accent);
            color: var(--primary);
        }
        .btn-mem--accent:hover {
            background: #dbb978;
        }
        .btn-mem--ghost {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--border);
        }
        .btn-mem--ghost:hover {
            border-color: var(--primary);
            background: var(--primary-soft);
        }

        /* ===== 套餐对比 ===== */
        .plan-table-wrapper {
            overflow-x: auto;
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }
        .plan-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 680px;
        }
        .plan-table th {
            background: var(--primary);
            color: #fff;
            font-size: 0.9rem;
            font-weight: 600;
            padding: 14px 18px;
            text-align: center;
            letter-spacing: 0.03em;
            white-space: nowrap;
        }
        .plan-table th:first-child {
            text-align: left;
            border-radius: var(--radius-lg) 0 0 0;
        }
        .plan-table th:last-child {
            border-radius: 0 var(--radius-lg) 0 0;
        }
        .plan-table td {
            padding: 13px 18px;
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-weak);
            border-bottom: 1px solid var(--border-light);
            vertical-align: middle;
        }
        .plan-table td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--text);
            white-space: nowrap;
        }
        .plan-table tr:last-child td {
            border-bottom: none;
        }
        .plan-table tr:last-child td:first-child {
            border-radius: 0 0 0 var(--radius-lg);
        }
        .plan-table tr:last-child td:last-child {
            border-radius: 0 0 var(--radius-lg) 0;
        }
        .plan-table tr:hover td {
            background: #f9fafb;
        }
        .plan-table .check {
            color: var(--success);
            font-weight: 700;
        }
        .plan-table .dash {
            color: #c0c8d0;
        }
        .plan-table .highlight-col {
            background: #fcf8ef;
        }
        .plan-table tr:hover td.highlight-col {
            background: #faf3e3;
        }

        /* ===== 保障条 ===== */
        .assurance-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-3);
        }
        .assurance-item {
            background: var(--surface);
            border-radius: var(--radius);
            padding: var(--space-3);
            text-align: center;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .assurance-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--primary-light);
            transform: translateY(-3px);
        }
        .assurance-item__icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 10px;
        }
        .assurance-item__title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .assurance-item__text {
            font-size: 0.82rem;
            color: var(--text-weak);
            line-height: 1.6;
        }

        /* ===== 资讯区（左列表 + 右推荐） ===== */
        .news-layout {
            display: grid;
            grid-template-columns: 1.4fr 0.6fr;
            gap: var(--space-4);
        }
        .news-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .news-list li {
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition);
        }
        .news-list li:hover {
            background: #fafbfc;
        }
        .news-list a {
            display: flex;
            align-items: center;
            gap: var(--space-2);
            padding: 14px 12px;
            font-size: 0.92rem;
            color: var(--text);
            transition: color var(--transition);
        }
        .news-list a:hover {
            color: var(--primary-light);
        }
        .news-list__date {
            font-size: 0.78rem;
            color: var(--text-weak);
            white-space: nowrap;
            flex-shrink: 0;
            width: 70px;
        }
        .news-list__title {
            flex: 1;
            line-height: 1.45;
        }
        .news-list__arrow {
            color: var(--primary-light);
            font-weight: 700;
            flex-shrink: 0;
            opacity: 0;
            transition: opacity var(--transition), transform var(--transition);
        }
        .news-list a:hover .news-list__arrow {
            opacity: 1;
            transform: translateX(4px);
        }
        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: var(--space-2);
        }
        .news-sidebar-card {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            flex: 1;
        }
        .news-sidebar-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }
        .news-sidebar-card__img {
            height: 150px;
            overflow: hidden;
        }
        .news-sidebar-card__img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }
        .news-sidebar-card:hover .news-sidebar-card__img img {
            transform: scale(1.05);
        }
        .news-sidebar-card__body {
            padding: var(--space-2);
        }
        .news-sidebar-card__title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .news-sidebar-card__text {
            font-size: 0.8rem;
            color: var(--text-weak);
            line-height: 1.6;
        }

        /* ===== 限时入口（含 FAQ） ===== */
        .promo-section {
            background: var(--primary);
            color: #fff;
            padding: var(--space-6) 0;
            position: relative;
            overflow: hidden;
        }
        .promo-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-4.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            z-index: 0;
        }
        .promo-section .container {
            position: relative;
            z-index: 1;
        }
        .promo-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-5);
            align-items: start;
        }
        .promo-left {
            padding-right: var(--space-2);
        }
        .promo-left .section__title {
            color: #fff;
        }
        .promo-left .section__desc {
            color: rgba(255, 255, 255, 0.75);
        }
        .promo-countdown {
            display: flex;
            gap: var(--space-2);
            margin: var(--space-2) 0 var(--space-3);
        }
        .countdown-box {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 10px;
            text-align: center;
            min-width: 60px;
            padding: 10px 8px;
            backdrop-filter: blur(6px);
        }
        .countdown-box__value {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
        }
        .countdown-box__label {
            font-size: 0.72rem;
            color: rgba(255, 255, 255, 0.65);
        }
        .btn-promo {
            background: var(--accent);
            color: var(--primary);
            padding: 14px 32px;
            border-radius: 10px;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.03em;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-promo:hover {
            background: #dbb978;
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(201, 166, 92, 0.35);
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius);
            overflow: hidden;
            backdrop-filter: blur(6px);
            transition: border-color var(--transition), background var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.09);
        }
        .faq-item summary {
            padding: 14px 18px;
            font-weight: 600;
            font-size: 0.92rem;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            transition: color var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::before {
            content: 'Q';
            font-size: 0.75rem;
            font-weight: 800;
            background: var(--accent);
            color: var(--primary);
            width: 24px;
            height: 24px;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .faq-item summary::after {
            content: '+';
            margin-left: auto;
            font-size: 1.2rem;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.6);
            transition: transform var(--transition);
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-item__answer {
            padding: 0 18px 16px 52px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.75;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0d1f2e;
            color: rgba(255, 255, 255, 0.7);
            padding: var(--space-5) 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.3fr 1fr 1fr 1fr;
            gap: var(--space-4);
            padding-bottom: var(--space-4);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-brand h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 0.82rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul a {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.62);
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            padding: var(--space-2) 0 var(--space-3);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.48);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.62);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero .container {
                grid-template-columns: 1fr;
                gap: var(--space-4);
            }
            .hero__lead-card {
                margin-left: 0;
                max-width: 100%;
            }
            .membership-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: var(--space-2);
            }
            .assurance-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .top-bar {
                display: block;
            }
            .header-actions__hotline {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 62px;
                left: 0;
                right: 0;
                background: var(--primary);
                flex-direction: column;
                padding: var(--space-2);
                gap: 4px;
                transform: translateY(-120%);
                transition: transform 0.28s ease;
                box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
                z-index: 99;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
            }
            .main-nav.open {
                transform: translateY(0);
            }
            .main-nav a {
                width: 100%;
                text-align: center;
                padding: 12px 16px;
            }
            .btn-header {
                display: none;
            }
            .hero {
                padding: var(--space-4) 0;
                min-height: auto;
            }
            .hero__stats {
                gap: var(--space-2);
            }
            .hero__stat-value {
                font-size: 1.3rem;
            }
            .membership-grid {
                grid-template-columns: 1fr;
                gap: var(--space-3);
            }
            .mem-card--featured::before {
                right: -38px;
                top: 14px;
            }
            .news-layout {
                grid-template-columns: 1fr;
                gap: var(--space-3);
            }
            .promo-grid {
                grid-template-columns: 1fr;
                gap: var(--space-4);
            }
            .promo-left {
                padding-right: 0;
            }
            .assurance-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-2);
            }
            .section {
                padding: var(--space-4) 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-3);
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .form-row {
                flex-direction: column;
            }
        }

        @media (max-width: 520px) {
            .hero__title {
                font-size: 1.7rem;
            }
            .hero__desc {
                font-size: 0.9rem;
            }
            .hero__cta {
                flex-direction: column;
                width: 100%;
            }
            .hero__cta .btn {
                width: 100%;
                justify-content: center;
            }
            .hero__stats {
                gap: var(--space-2);
                flex-wrap: wrap;
            }
            .hero__lead-toc {
                grid-template-columns: 1fr;
            }
            .city-strip__label {
                font-size: 0.78rem;
            }
            .city-chip {
                padding: 6px 14px;
                font-size: 0.78rem;
            }
            .assurance-grid {
                grid-template-columns: 1fr;
            }
            .news-list a {
                flex-wrap: wrap;
                padding: 12px 8px;
            }
            .news-list__date {
                width: auto;
                font-size: 0.72rem;
            }
            .countdown-box {
                min-width: 48px;
                padding: 8px 6px;
            }
            .countdown-box__value {
                font-size: 1.2rem;
            }
            .container {
                padding: 0 var(--space-2);
            }
            .logo {
                font-size: 1.15rem;
            }
            .logo__icon {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
            }
        }