/* ============================================================
   郑州中牟同程旅行社 - 全站样式表
   特点：简洁大气、稳重正规、响应式适配
   ============================================================ */

/* ===== 1. CSS 变量定义 ===== */
:root {
    /* 主色调：稳重蓝绿色系 */
    --primary: #1a5276;       /* 深蓝 - 稳重正规 */
    --primary-light: #2874a6; /* 浅蓝 */
    --primary-dark: #154360;   /* 深蓝强调 */
    --accent: #e67e22;        /* 橙色 - CTA按钮/价格 */
    --accent-hover: #d35400;

    /* 辅助色 */
    --green: #27ae60;         /* 绿色 - 服务优势 */
    --red: #c0392b;           /* 红色 - 热门标签 */
    --purple: #8e44ad;        /* 紫色 - 联系我们 */

    /* 中性色 */
    --text-dark: #2c3e50;     /* 主文字 */
    --text-body: #555555;     /* 正文 */
    --text-light: #888888;    /* 辅助文字 */
    --bg-light: #f8f9fa;      /* 浅灰背景 */
    --bg-white: #ffffff;
    --border: #e0e0e0;        /* 边框色 */

    /* 圆角 */
    --radius: 8px;
    --radius-sm: 4px;
    --radius-lg: 12px;

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.15);

    /* 过渡 */
    --transition: all 0.3s ease;

    /* 容器宽度 */
    --container: 1200px;
}

/* ===== 2. 基础重置与全局样式 ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--text-body);
    background: var(--bg-white);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

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

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

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

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

ul {
    list-style: none;
}

/* ===== 3. 通用容器 ===== */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 60px 0;
}

.section:nth-child(even) {
    background: var(--bg-light);
}

/* ===== 4. 通用标题样式 ===== */
.section-title {
    text-align: center;
    font-size: 1.75rem;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.section-title strong {
    color: var(--primary);
}

.section-sub {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 40px;
    font-size: 1rem;
}

.section-more {
    text-align: center;
    margin-top: 40px;
}

/* ============================================================
   5. 顶部导航栏
   ============================================================ */
.site-header {
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    gap: 20px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary);
    flex-shrink: 0;
}

.logo-icon {
    font-size: 1.8rem;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-text strong {
    font-size: 1.1rem;
    color: var(--text-dark);
}

.logo-text small {
    font-size: 0.7rem;
    color: var(--text-light);
}

/* 电脑端导航 */
.pc-nav {
    display: flex;
    gap: 0;
    flex: 1;
    justify-content: center;
}

.pc-nav a {
    display: block;
    padding: 8px 20px;
    color: var(--text-dark);
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    position: relative;
}

.pc-nav a:hover {
    color: var(--primary);
    background: rgba(26, 82, 118, 0.06);
}

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

.pc-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
}

/* 顶部电话 */
.header-tel {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    flex-shrink: 0;
}

.header-tel span:first-child {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary);
}

.header-tel-sub {
    font-size: 0.7rem;
    color: var(--text-light);
}

/* 汉堡菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: var(--transition);
}

/* 手机端下拉导航 */
.mobile-nav {
    display: none;
    flex-direction: column;
    background: var(--bg-white);
    border-top: 1px solid var(--border);
    padding: 10px 0;
}

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

.mobile-nav a {
    display: block;
    padding: 12px 20px;
    color: var(--text-dark);
    font-size: 1rem;
    border-left: 3px solid transparent;
    transition: var(--transition);
}

.mobile-nav a:hover,
.mobile-nav a.active {
    color: var(--primary);
    background: rgba(26, 82, 118, 0.05);
    border-left-color: var(--primary);
}

.mobile-tel {
    padding: 10px 20px;
    border-top: 1px solid var(--border);
    margin-top: 5px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.mobile-tel a {
    color: var(--primary);
    font-size: 0.95rem;
    border-left: none;
    padding: 4px 0;
}

/* ============================================================
   6. 轮播图
   ============================================================ */
.hero-slider {
    position: relative;
    overflow: hidden;
    height: 480px;
    background: #0a3d62;
}

.slider-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a5276, #2e86c1);
}

.slide.active {
    opacity: 1;
}

.slide img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 半透明遮罩，让文字更清晰 */
.slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.35);
    z-index: 1;
}

.slide-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;
    padding: 0 20px;
    max-width: 700px;
}

.slide-content h2 {
    font-size: 2.2rem;
    color: #fff;
    margin-bottom: 12px;
    font-weight: 700;
}

.slide-content p {
    font-size: 1.1rem;
    margin-bottom: 24px;
    opacity: 0.9;
}

.btn-slide {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    padding: 12px 32px;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
}

.btn-slide:hover {
    background: var(--accent-hover);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(230, 126, 34, 0.4);
}

/* 箭头 */
.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.9);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.4rem;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.slider-arrow:hover {
    background: #fff;
    box-shadow: var(--shadow-md);
}

.slider-prev { left: 20px; }
.slider-next { right: 20px; }

/* 指示器 */
.slider-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 8px;
}

.slider-dots .dot {
    width: 8px;
    height: 8px;
    background: rgba(255,255,255,0.5);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

.slider-dots .dot.active {
    background: #fff;
    width: 24px;
    border-radius: 4px;
}

/* ============================================================
   7. 服务优势
   ============================================================ */
.advantages {
    background: var(--bg-white) !important;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.advantage-item {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 30px 24px;
    text-align: center;
    transition: var(--transition);
}

.advantage-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.adv-icon {
    font-size: 2.5rem;
    margin-bottom: 14px;
}

.advantage-item h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.advantage-item p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* ============================================================
   8. 热门线路卡片
   ============================================================ */
.routes-preview,
.routes-list {
    background: var(--bg-light) !important;
}

.route-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.route-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: row;
}

.route-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
    border-color: transparent;
}

/* 竖图展示区：固定高度400px，宽度277px，所有图片等比缩放居中裁切 */
.route-img {
    position: relative;
    width: 277px;
    min-width: 277px;
    height: 400px;
    flex-shrink: 0;
    background: linear-gradient(135deg, #1a5276, #2874a6);
    overflow: hidden;
}

.route-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

/* 占位提示（图片加载失败时显示渐变背景） */
.route-img::after {
    content: none;
}

.route-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--primary);
    color: #fff;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 2;
}

.route-tag-hot {
    top: 12px;
    left: auto;
    right: 12px;
    background: var(--red);
}

.route-info {
    padding: 18px;
}

.route-info h3 {
    font-size: 1.05rem;
    margin-bottom: 6px;
    color: var(--text-dark);
}

.route-meta {
    display: flex;
    gap: 10px;
    font-size: 0.78rem;
    color: var(--text-light);
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.route-desc {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 14px;
    line-height: 1.5;
    /* 限制两行 */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.route-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.route-price {
    font-size: 0.9rem;
    color: var(--text-light);
}

.route-price strong {
    font-size: 1.3rem;
    color: var(--accent);
    font-weight: 700;
}

.btn-detail {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    padding: 7px 18px;
    border-radius: 20px;
    font-size: 0.85rem;
    transition: var(--transition);
}

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

/* ============================================================
   9. 分类快捷入口
   ============================================================ */
.cat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.cat-item {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 30px 20px;
    text-align: center;
    border: 1px solid var(--border);
    transition: var(--transition);
    display: block;
}

.cat-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
    transform: translateY(-3px);
}

.cat-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.cat-item h3 {
    font-size: 1.05rem;
    margin-bottom: 6px;
    color: var(--text-dark);
}

.cat-item p {
    font-size: 0.82rem;
    color: var(--text-light);
}

/* ============================================================
   10. CTA 区域
   ============================================================ */
.cta-section {
    background: var(--primary) !important;
    padding: 60px 0;
}

.cta-box {
    text-align: center;
    color: #fff;
}

.cta-box h2 {
    color: #fff;
    font-size: 1.6rem;
    margin-bottom: 10px;
}

.cta-box p {
    color: rgba(255,255,255,0.85);
    margin-bottom: 24px;
    font-size: 1rem;
}

.cta-phones {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 16px;
}

.cta-phone {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.phone-label {
    font-size: 0.8rem;
    opacity: 0.7;
    margin-bottom: 4px;
}

.phone-num {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
}

.phone-num:hover {
    color: #f39c12;
}

.cta-address {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
}

/* ============================================================
   11. 底部版权
   ============================================================ */
.site-footer {
    background: var(--text-dark);
    color: rgba(255,255,255,0.75);
    padding: 50px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.2rem;
    color: #fff;
    margin-bottom: 12px;
}

.footer-logo span {
    font-size: 1.5rem;
}

.footer-col p,
.footer-col li {
    font-size: 0.88rem;
    line-height: 1.8;
}

.footer-col h4 {
    color: #fff;
    font-size: 0.95rem;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary);
    display: inline-block;
}

.footer-col ul li {
    margin-bottom: 6px;
}

.footer-col a,
.footer-contact a {
    color: rgba(255,255,255,0.75);
}

.footer-col a:hover,
.footer-contact a:hover {
    color: #fff;
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 6px;
}

.footer-bottom {
    text-align: center;
    padding: 20px 0;
    font-size: 0.82rem;
    color: rgba(255,255,255,0.45);
}

.footer-bottom p:last-child {
    margin-top: 4px;
}

/* ============================================================
   12. 悬浮联系按钮
   ============================================================ */
.float-btns {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 999;
}

.float-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: #fff;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.float-btn:hover {
    transform: scale(1.1);
    color: #fff;
}

.float-btn-tel {
    background: var(--accent);
}

.float-btn-tel2 {
    background: var(--primary);
}

/* ============================================================
   13. 按钮样式
   ============================================================ */
.btn-more {
    display: inline-block;
    padding: 12px 32px;
    background: var(--primary);
    color: #fff;
    border-radius: 30px;
    font-size: 0.95rem;
    font-weight: 600;
    transition: var(--transition);
}

.btn-more:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(26, 82, 118, 0.35);
}

/* ============================================================
   14. 页面标题栏（通用内页顶部）
   ============================================================ */
.page-banner {
    padding: 50px 0;
    text-align: center;
    color: #fff;
}

.page-banner h1 {
    color: #fff;
    font-size: 2rem;
    margin-bottom: 8px;
}

.page-banner p {
    color: rgba(255,255,255,0.85);
    font-size: 1rem;
}

/* 面包屑 */
.breadcrumb-bar {
    background: var(--bg-light);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}

.breadcrumb-bar nav {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-light);
    flex-wrap: wrap;
}

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

.breadcrumb-bar a:hover {
    text-decoration: underline;
}

/* ============================================================
   15. 线路列表页 - 筛选标签
   ============================================================ */
.filter-bar {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
    position: sticky;
    top: 70px;
    z-index: 100;
}

.filter-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 8px 20px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: var(--bg-white);
    color: var(--text-dark);
    font-size: 0.88rem;
    cursor: pointer;
    transition: var(--transition);
}

.filter-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-tab.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* ============================================================
   16. 线路详情页
   ============================================================ */
.detail-main {
    padding: 40px 0 60px;
}

.detail-layout {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 40px;
    align-items: start;
}

/* 左侧 */
.detail-gallery {
    position: sticky;
    top: 90px;
}

.gallery-main {
    position: relative;
    background: linear-gradient(135deg, #d5e8f0, #e8f4f8);
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 400px;
}

.gallery-main img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    object-position: top;
    display: block;
}

.gallery-placeholder {
    position: relative;
    z-index: 1;
    color: #aaa;
    font-size: 0.85rem;
}

.detail-info-box {
    margin-top: 20px;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid var(--border);
}

/* 详情页大图：完整显示竖版图片 */
.detail-hero {
    padding: 0;
    background: none;
}

.detail-hero-img {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: linear-gradient(135deg, #d5e8f0, #e8f4f8);
    display: flex;
    justify-content: center;
    align-items: center;
}

.detail-hero-img img {
    height: 500px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    display: block;
    border-radius: var(--radius-lg);
}

.detail-hero-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 40px 30px 30px;
    background: linear-gradient(transparent, rgba(0,0,0,0.75));
    color: #fff;
}

.detail-hero-content { max-width: 700px; }

.detail-title {
    font-size: 1.4rem;
    margin-bottom: 12px;
}

.detail-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.detail-tag {
    padding: 3px 12px;
    background: rgba(26, 82, 118, 0.1);
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.8rem;
}

.detail-meta {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.88rem;
    color: var(--text-body);
    margin-bottom: 16px;
    padding: 12px;
    background: var(--bg-white);
    border-radius: var(--radius);
}

.detail-meta strong {
    color: var(--text-dark);
}

.detail-price-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin-bottom: 16px;
}

.detail-price {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.price-label {
    font-size: 0.8rem;
    color: var(--text-light);
}

.price-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
}

.price-unit {
    font-size: 0.9rem;
    color: var(--text-light);
}

.detail-price-note {
    font-size: 0.75rem;
    color: var(--text-light);
}

.detail-actions {
    display: flex;
    gap: 12px;
}

.btn-call {
    flex: 1;
    display: block;
    text-align: center;
    background: var(--accent);
    color: #fff;
    padding: 12px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.95rem;
}

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

.btn-more-detail {
    flex: 1;
    display: block;
    text-align: center;
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 12px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.95rem;
}

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

/* 右侧详情 */
.detail-section {
    margin-bottom: 30px;
}

.detail-section-title {
    font-size: 1.1rem;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary);
    display: inline-block;
}

.detail-highlights {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.detail-highlights li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-body);
}

.detail-highlights li::before {
    content: '✅';
    flex-shrink: 0;
}

/* 行程安排 */
.itinerary {
    display: flex;
    flex-direction: column;
    gap: 0;
    border-left: 2px solid var(--primary);
    margin-left: 8px;
    padding-left: 20px;
}

.itinerary-item {
    position: relative;
    padding-bottom: 20px;
}

.itinerary-item:last-child {
    padding-bottom: 0;
}

.itinerary-item::before {
    content: '';
    position: absolute;
    left: -29px;
    top: 4px;
    width: 14px;
    height: 14px;
    background: var(--primary);
    border-radius: 50%;
    border: 3px solid #fff;
    box-shadow: 0 0 0 2px var(--primary);
}

.iti-time {
    font-size: 0.82rem;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 4px;
}

.iti-content h3 {
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.iti-content p {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* 费用说明 */
.fee-table {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.fee-row {
    padding: 14px 18px;
}

.fee-include {
    background: #f0f9f0;
    border-bottom: 1px solid var(--border);
}

.fee-exclude {
    background: #fff5f5;
}

.fee-label {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text-dark);
    margin-bottom: 8px;
    display: block;
}

.fee-row ul {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.fee-row li {
    font-size: 0.85rem;
    padding-left: 16px;
    position: relative;
}

.fee-include .fee-row li::before {
    content: '●';
    position: absolute;
    left: 0;
    color: var(--green);
}

.fee-exclude .fee-row li::before {
    content: '●';
    position: absolute;
    left: 0;
    color: var(--red);
}

/* 注意事项 */
.detail-notice {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.detail-notice li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 0.88rem;
    color: var(--text-body);
}

.detail-notice li::before {
    content: '⚡';
    flex-shrink: 0;
}

/* 同类推荐 */
.detail-recommend {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

/* ============================================================
   17. 关于我们页
   ============================================================ */
.about-intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-intro-text h2 {
    font-size: 1.6rem;
    margin-bottom: 16px;
}

.about-intro-text p {
    margin-bottom: 14px;
    font-size: 0.95rem;
    color: var(--text-body);
}

.about-intro-img {
    position: relative;
    height: 320px;
    background: linear-gradient(135deg, #d5e8f0, #e8f4f8);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-intro-img img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-img-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: #aaa;
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
}

.about-img-placeholder span {
    padding: 12px 20px;
    background: rgba(255,255,255,0.8);
    border-radius: var(--radius);
}

.about-intro-img img[style*="display: none"] ~ .about-img-placeholder,
.about-intro-img:has(img[style*="display: none"]) .about-img-placeholder {
    display: flex;
}

/* 关于我们 - 优势卡片 */
.adv-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.adv-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    transition: var(--transition);
}

.adv-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.adv-num {
    font-size: 2rem;
    font-weight: 800;
    color: rgba(26, 82, 118, 0.12);
    margin-bottom: 8px;
}

.adv-card h3 {
    font-size: 1.05rem;
    margin-bottom: 8px;
}

.adv-card p {
    font-size: 0.88rem;
    color: var(--text-light);
}

/* 服务范围 */
.service-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.service-item {
    display: flex;
    gap: 20px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
}

.service-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.service-icon {
    font-size: 2rem;
    flex-shrink: 0;
    width: 50px;
    text-align: center;
}

/* ===== 联系我们页右侧面板 ===== */
.contact-card-content {
    flex: 1;
}

.contact-card-content h2 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.contact-card-main {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.contact-card-main a {
    color: var(--text-dark);
}

.contact-card-sub {
    font-size: 0.82rem;
    color: var(--text-light);
    margin-bottom: 12px;
}

.btn-contact-action {
    display: inline-block;
    padding: 7px 18px;
    background: var(--primary);
    color: #fff;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 600;
}

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

.contact-card-wechat {
    border-color: var(--green);
    background: #f0fdf4;
}

.contact-info-panel h2 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary);
}

.contact-tip-block {
    margin-bottom: 20px;
    padding: 16px;
    background: var(--bg-light);
    border-radius: var(--radius);
    border-left: 3px solid var(--primary);
}

.contact-tip-block h3 {
    font-size: 0.95rem;
    margin-bottom: 8px;
}

.contact-tip-block p,
.contact-tip-block li {
    font-size: 0.88rem;
    color: var(--text-body);
}

.contact-tip-block ul {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding-left: 0;
}

.contact-tip-block ul li::before {
    content: '• ';
    color: var(--primary);
}

.contact-tip-highlight {
    background: #fff9f0;
    border-left-color: var(--accent);
}

.contact-quick-call {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
}

.btn-call-big {
    display: block;
    text-align: center;
    background: var(--accent);
    color: #fff;
    padding: 16px;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 700;
}

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

.btn-call-big-2 {
    background: var(--primary);
}

.btn-call-big-2:hover {
    background: var(--primary-dark);
    color: #fff;
}

/* 地图占位 */
.contact-map-section {
    margin-top: 50px;
}

.contact-map-section h2 {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.map-placeholder {
    background: linear-gradient(135deg, #f0f4f8, #d5e8f0);
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 60px;
    text-align: center;
    color: var(--text-light);
}

.map-placeholder p {
    font-size: 1rem;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 0;
    color: var(--text-light);
}

.empty-state p {
    font-size: 1rem;
}

/* ===== 19. 空状态/图片占位 ===== */
img[style*="display: none"] ~ * {
    /* fallback */
}

/* ============================================================
   20. 响应式适配
   ============================================================ */

/* 大屏幕 */
@media (max-width: 1100px) {
    .route-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
    
    .license-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 平板 */
@media (max-width: 900px) {
    .hero-slider {
        height: 380px;
    }
    
    .slide-content h2 {
        font-size: 1.7rem;
    }
    
    .advantage-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cat-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .detail-layout {
        grid-template-columns: 1fr;
    }
    
    .detail-gallery {
        position: static;
    }
    
    .about-intro-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

/* 手机端 */
@media (max-width: 768px) {
    /* 导航 */
    .pc-nav,
    .header-tel {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .site-header {
        position: relative;
    }
    
    /* 轮播 */
    .hero-slider {
        height: 320px;
    }
    
    .slide-content h2 {
        font-size: 1.4rem;
    }
    
    .slide-content p {
        font-size: 0.9rem;
    }
    
    .slider-arrow {
        width: 36px;
        height: 36px;
        font-size: 1.2rem;
    }
    
    /* 布局 */
    .advantage-grid,
    .adv-grid {
        grid-template-columns: 1fr;
    }
    
    .route-cards {
        grid-template-columns: 1fr;
    }

    .route-card {
        flex-direction: column;
    }

    .route-img {
        width: 100%;
        height: 400px;
    }

    .route-img img {
        width: 100%;
        height: 400px;
    }
    
    .cat-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .license-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .cta-phones {
        flex-direction: column;
        gap: 16px;
    }
    
    /* 内页 */
    .page-banner {
        padding: 36px 0;
    }
    
    .page-banner h1 {
        font-size: 1.5rem;
    }
    
    .filter-bar {
        top: auto;
        position: relative;
    }
    
    .filter-tabs {
        justify-content: flex-start;
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 4px;
    }
    
    .filter-tab {
        flex-shrink: 0;
    }
    
    /* 线路详情 */
    .detail-actions {
        flex-direction: column;
    }
    
    /* 悬浮按钮 */
    .float-btns {
        bottom: 16px;
        right: 16px;
    }
    
    .float-btn {
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
    }
    
    /* 通用 */
    .section {
        padding: 40px 0;
    }
    
    .section-title {
        font-size: 1.4rem;
    }
    
    .about-stats {
        padding: 36px 0;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .stat-num {
        font-size: 1.8rem;
    }
    
    .service-item {
        flex-direction: column;
    }
    
    .adv-card {
        padding: 20px 18px;
    }
    
    /* 联系方式 */
    .contact-quick-call {
        gap: 8px;
    }
    
    .btn-call-big {
        padding: 14px;
        font-size: 0.95rem;
    }
    
    .contact-card {
        padding: 18px;
    }
}

/* 小屏手机 */
@media (max-width: 480px) {
    .hero-slider {
        height: 280px;
    }
    
    .slide-content h2 {
        font-size: 1.2rem;
    }
    
    .slide-content p {
        font-size: 0.82rem;
    }
    
    .cat-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    
    .cat-item {
        padding: 20px 12px;
    }
    
    .cat-icon {
        font-size: 2rem;
    }
    
    .cta-box h2 {
        font-size: 1.3rem;
    }
    
    .phone-num {
        font-size: 1.3rem;
    }
    
    .license-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .logo-text small {
        display: none;
    }
}

/* ===== 21. 动画效果 ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.route-card,
.advantage-item,
.adv-card,
.service-item,
.license-item,
.contact-card {
    animation: fadeInUp 0.5s ease forwards;
}

/* 延迟动画，让卡片错开出现 */
.route-card:nth-child(1) { animation-delay: 0.05s; }
.route-card:nth-child(2) { animation-delay: 0.1s; }
.route-card:nth-child(3) { animation-delay: 0.15s; }
.route-card:nth-child(4) { animation-delay: 0.2s; }
.route-card:nth-child(5) { animation-delay: 0.25s; }
.route-card:nth-child(6) { animation-delay: 0.3s; }

/* ===== 22. 打印样式 ===== */
@media print {
    .site-header,
    .float-btns,
    .slider-arrow,
    .slider-dots,
    .cta-section,
    .footer-bottom p:last-child {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        color: #000;
    }
    
    .section {
        padding: 20pt 0;
    }
}

.service-text h3 {
    font-size: 1.05rem;
    margin-bottom: 6px;
}

.service-text p {
    font-size: 0.88rem;
    color: var(--text-light);
}

/* 资质 */
.license-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.license-item {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px 20px;
    text-align: center;
    transition: var(--transition);
}

.license-item:hover {
    border-color: var(--green);
}

.license-icon {
    font-size: 2.2rem;
    margin-bottom: 12px;
}

.license-item h3 {
    font-size: 0.95rem;
    margin-bottom: 8px;
}

.license-item p {
    font-size: 0.82rem;
    color: var(--text-light);
}

/* 数据展示 */
.about-stats {
    background: var(--primary) !important;
    padding: 50px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.stat-item {
    text-align: center;
}

.stat-num {
    font-size: 2.4rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 6px;
}

.stat-label {
    font-size: 0.88rem;
    color: rgba(255,255,255,0.75);
}

/* ============================================================
   18. 联系我们页
   ============================================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.contact-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
    transition: var(--transition);
}

.contact-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.contact-card-icon {
    font-size: 2rem;
}

/* ===== 详情页顶部醒目标题横幅 ===== */
.detail-hero-banner {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: #fff;
    text-align: center;
    padding: 18px 20px;
    margin-bottom: 0;
    border-radius: 0;
}

.detail-hero-banner p {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.detail-hero-banner .banner-sub {
    font-size: 0.85rem;
    font-weight: 400;
    opacity: 0.9;
    margin-top: 4px;
    letter-spacing: 0;
}

.detail-hero-banner.banner-yangzhou {
    background: linear-gradient(135deg, #27ae60, #1e8449);
}

.detail-hero-banner.banner-weihai {
    background: linear-gradient(135deg, #1a5276, #154360);
}

.detail-hero-banner.banner-xuzhou {
    background: linear-gradient(135deg, #d35400, #a04000);
}

.detail-hero-banner.banner-gannan {
    background: linear-gradient(135deg, #7b2d8b, #4a235a);
}

/* ============================================================
   首页热门线路卡片 — 统一尺寸
   ============================================================ */
.index-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: row;
}

.index-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
    border-color: transparent;
}

.index-card-img {
    position: relative;
    width: 277px;
    min-width: 277px;
    height: 400px;
    flex-shrink: 0;
    overflow: hidden;
    background: linear-gradient(135deg, #1a5276, #2874a6);
}

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

.index-card-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--primary);
    color: #fff;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 2;
}

.index-card-info {
    flex: 1;
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.index-card-info h3 {
    margin: 0 0 10px;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-heading);
    line-height: 1.5;
}

.index-card-desc {
    margin: 0 0 12px;
    font-size: 0.85rem;
    color: var(--text-body);
    line-height: 1.7;
    flex: 1;
}

.index-card-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 10px;
    border-top: 1px solid var(--border);
}

.index-card-price {
    font-size: 0.85rem;
    color: #e74c3c;
}

.index-card-price strong {
    font-size: 1.3rem;
}

.btn-index-detail {
    display: inline-block;
    padding: 6px 14px;
    background: var(--primary);
    color: #fff;
    border-radius: 20px;
    font-size: 0.8rem;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.3s;
}

.btn-index-detail:hover {
    background: var(--primary-dark, #1e8449);
}

/* ============================================================
   首页卡片 — 手机端响应式
   ============================================================ */
@media (max-width: 768px) {
    .index-card {
        flex-direction: column;
    }

    .index-card-img {
        width: 100%;
        height: 220px;
    }

    .index-card-img img {
        width: 100%;
        height: 220px;
    }

    .index-card-info {
        padding: 14px 16px;
    }

    .index-card-info h3 {
        font-size: 0.95rem;
    }

    .index-card-desc {
        font-size: 0.82rem;
    }
}