/* ============================================
   拓界团建 - 企业官网样式
   ============================================ */

/* --- CSS 变量 --- */
:root {
    --primary: #f47920;
    --primary-dark: #e06810;
    --primary-light: #ff9f43;
    --secondary: #1a3a5c;
    --accent: #e74c3c;
    --bg: #ffffff;
    --bg-alt: #f8f9fa;
    --text: #333333;
    --text-light: #666666;
    --text-muted: #999999;
    --border: #e8e8e8;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --transition: 0.3s ease;
    --max-width: 1200px;
    --header-height: 100px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
    font-size: 15px;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

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

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 40px;
}

/* --- 按钮 --- */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(244,121,32,0.4);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255,255,255,0.6);
}

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

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

.btn-block {
    width: 100%;
    padding: 14px;
    font-size: 16px;
}

/* --- 导航栏 --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: #fff;
    box-shadow: 0 1px 6px rgba(0,0,0,0.08);
    z-index: 1000;
    transition: all var(--transition);
}

.header.scrolled {
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    height: 100%;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    margin-right: 15px;
}

.logo-img {
    height: 68px;
    width: auto;
    display: block;
    max-width: none;
}

.logo-icon {
    font-size: 26px;
    color: var(--primary);
}

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

/* 导航链接 */
.nav-list {
    display: flex;
    gap: 4px;
}

.nav-link {
    display: block;
    padding: 12px 22px;
    font-size: 17px;
    border-radius: 4px;
    transition: all var(--transition);
    white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background: rgba(244,121,32,0.08);
}

/* ===== 导航下拉菜单 ===== */
.nav-dropdown {
    position: relative;
}
.nav-dropdown .nav-link.dropdown-trigger {
    cursor: default;
}
.nav-dropdown .dropdown-arrow {
    font-size: 11px;
    margin-left: 4px;
    transition: transform 0.2s;
    display: inline-block;
}
.nav-dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-panel {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 8px 40px rgba(0,0,0,0.15);
    padding: 24px 20px;
    display: flex;
    gap: 32px;
    min-width: 480px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
    z-index: 1000;
    margin-top: 6px;
}
.nav-dropdown:hover .dropdown-panel {
    opacity: 1;
    visibility: visible;
    margin-top: 0;
}
.dropdown-panel::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 0; height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid #fff;
}

.dropdown-col {
    flex: 1;
    min-width: 160px;
}
.dropdown-col + .dropdown-col {
    border-left: 1px solid #eee;
    padding-left: 24px;
}
.dropdown-heading {
    font-size: 15px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary);
    white-space: nowrap;
}
.dropdown-heading .count {
    color: var(--primary);
    font-size: 13px;
    font-weight: 400;
}

.dropdown-sub {
    display: block;
    padding: 6px 10px;
    font-size: 14px;
    color: #555;
    transition: all 0.2s;
    border-radius: 4px;
    white-space: nowrap;
    cursor: pointer;
    text-decoration: none;
}
.dropdown-sub:hover {
    color: var(--primary);
    background: rgba(244,121,32,0.06);
}
.dropdown-sub.hot::after {
    content: 'HOT';
    display: inline-block;
    background: #ff4757;
    color: #fff;
    font-size: 10px;
    padding: 1px 5px;
    border-radius: 3px;
    margin-left: 6px;
    vertical-align: middle;
}

.dropdown-all {
    display: block;
    margin-top: 10px;
    padding: 8px 0;
    font-size: 13px;
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s;
}
.dropdown-all:hover { color: #e06a10; }
.dropdown-all::after { content: ' \2192'; }

/* 移动端下拉 */
@media (max-width: 1024px) {
    .nav-dropdown {
        position: static;
    }
    .dropdown-panel {
        position: static;
        transform: none;
        box-shadow: none;
        border-radius: 0;
        padding: 0 0 0 16px;
        flex-direction: column;
        gap: 8px;
        min-width: auto;
        opacity: 1;
        visibility: visible;
        display: none;
        margin-top: 0;
    }
    .dropdown-panel::before { display: none; }
    .nav-dropdown.open .dropdown-panel { display: block; }
    .dropdown-col + .dropdown-col {
        border-left: none;
        padding-left: 0;
        margin-top: 12px;
    }
    .dropdown-heading {
        font-size: 14px;
        border-bottom: none;
        margin-bottom: 4px;
    }
    .dropdown-sub { font-size: 13px; padding: 8px 10px; }
    .dropdown-arrow { display: none !important; }
}

.header-contact {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 26px !important;
    color: var(--primary) !important;
    font-weight: 700 !important;
    white-space: nowrap;
    flex-shrink: 0;
}

.header-wechat-qr {
    width: 45px;
    height: 45px;
    border-radius: 6px;
    object-fit: cover;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.header-wechat-qr:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--secondary);
    transition: all var(--transition);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   Hero Banner
   ============================================ */
.hero {
    position: relative;
    height: 720px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: var(--header-height);
}

.hero-slider {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 30%;
    display: block;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.45);
    z-index: 1;
    pointer-events: none;
}

.hero-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
    background: rgba(255,255,255,0.2);
    border: none;
    color: #fff;
    font-size: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-arrow:hover {
    background: rgba(255,255,255,0.4);
}

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

.hero-dots {
    position: absolute;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    gap: 10px;
}

.hero-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    cursor: pointer;
    transition: all 0.3s;
}

.hero-dot.active {
    background: var(--primary);
    width: 28px;
    border-radius: 5px;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 20px;
}

.hero-sub {
    display: block;
    font-size: 20px;
    font-weight: 400;
    opacity: 0.9;
    margin-bottom: 10px;
    letter-spacing: 4px;
}

.text-accent {
    color: var(--primary-light);
}

.hero-desc {
    font-size: 17px;
    opacity: 0.9;
    margin-bottom: 36px;
    line-height: 1.8;
}

.hero-desc strong {
    color: var(--primary-light);
    font-size: 20px;
}

.hero-btns {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 数据统计条 */
.hero-stats {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0,0,0,0.3);
    backdrop-filter: blur(10px);
    z-index: 2;
}

.hero-stats-inner {
    display: flex;
    justify-content: space-around;
    padding: 20px 0;
}

.stat-item {
    text-align: center;
    color: #fff;
}

.stat-number {
    display: block;
    font-size: 32px;
    font-weight: 800;
    color: var(--primary-light);
}

.stat-label {
    font-size: 13px;
    opacity: 0.8;
}

/* ============================================
   通用区块
   ============================================ */
.section {
    padding: 80px 0;
}

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

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 12px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-light);
}

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

/* 特色标题样式 - 英文+中文+横线装饰 */
.title-styled {
    text-align: center;
    margin-bottom: 12px;
}
.title-styled .title-en {
    display: block;
    font-size: 16px;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 8px;
}
.title-styled .title-cn {
    display: block;
    font-size: 32px;
    font-weight: 700;
    color: var(--secondary);
    position: relative;
}
.title-styled .title-cn::before,
.title-styled .title-cn::after {
    content: '';
    display: inline-block;
    width: 50px;
    height: 2px;
    background: var(--primary);
    vertical-align: middle;
    margin: 0 15px;
}
@media (max-width: 768px) {
    .title-styled .title-cn { font-size: 24px; }
    .title-styled .title-cn::before,
    .title-styled .title-cn::after {
        width: 30px;
        margin: 0 8px;
    }
}

/* 分类方案展示 */
.category-programs {
    margin-top: 50px;
}
.category-group {
    margin-bottom: 50px;
}
.category-group:last-child {
    margin-bottom: 0;
}
.category-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.category-title .cat-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    color: #fff;
    font-size: 14px;
}
.category-group .programs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}
@media (max-width: 768px) {
    .category-group .programs-grid {
        grid-template-columns: 1fr;
    }
    .category-title {
        font-size: 18px;
    }
}

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

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

/* ============================================
   服务项目
   ============================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    box-shadow: var(--shadow);
    transition: all var(--transition);
    text-align: center;
    border: 1px solid var(--border);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.service-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.service-card h3 {
    font-size: 22px;
    margin-bottom: 12px;
    color: var(--secondary);
}

.service-card > p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

.service-features {
    text-align: left;
    margin-bottom: 24px;
}

.service-features li {
    padding: 6px 0;
    font-size: 14px;
    color: var(--text-light);
}

.service-features li::before {
    content: "✓ ";
    color: var(--primary);
    font-weight: 700;
}

/* ============================================
   经典方案
   ============================================ */
.programs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.program-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition);
    position: relative;
    text-decoration: none;
    color: inherit;
    display: block;
}

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

.program-img {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.program-day {
    background: rgba(0,0,0,0.5);
    color: #fff;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 20px;
    font-weight: 700;
}

.program-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--accent);
    color: #fff;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 700;
    z-index: 1;
}

.tag-new {
    background: var(--primary);
}

.program-info {
    padding: 20px 24px 24px;
}

.program-info h4 {
    font-size: 17px;
    margin-bottom: 8px;
    color: var(--secondary);
}

.program-desc {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 16px;
    line-height: 1.6;
}

.program-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.program-price {
    font-size: 24px;
    font-weight: 800;
    color: var(--accent);
}

.program-price span {
    font-size: 13px;
    font-weight: 400;
    color: var(--text-muted);
}

/* ============================================
   主题方案
   ============================================ */
/* 热门推荐横幅 */
.featured-theme-banner {
    display: block;
    background: linear-gradient(135deg, #1a3a5c 0%, #2c5f8a 100%);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 24px;
    transition: all var(--transition);
    text-decoration: none;
    position: relative;
}
.featured-theme-banner:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(26,58,92,0.3);
}
.ftb-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    background: linear-gradient(135deg, #f47920, #ff6b35);
    color: #fff;
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    z-index: 2;
}
.ftb-content {
    display: flex;
    align-items: center;
    gap: 0;
}
.ftb-text {
    flex: 1;
    padding: 36px 40px;
    color: #fff;
}
.ftb-text h3 {
    font-size: 26px;
    margin-bottom: 12px;
    color: #fff;
}
.ftb-text p {
    font-size: 15px;
    opacity: 0.9;
    line-height: 1.7;
    margin-bottom: 16px;
    color: rgba(255,255,255,0.85);
}
.ftb-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}
.ftb-meta span {
    font-size: 13px;
    opacity: 0.8;
    color: #fff;
}
.ftb-btn {
    display: inline-block;
    background: #f47920;
    color: #fff !important;
    padding: 8px 20px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 14px !important;
    opacity: 1 !important;
    transition: all 0.3s;
}
.featured-theme-banner:hover .ftb-btn {
    background: #ff6b35;
    transform: scale(1.05);
}
.ftb-img {
    width: 380px;
    flex-shrink: 0;
}
.ftb-img img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    display: block;
}
@media (max-width: 992px) {
    .ftb-content { flex-direction: column-reverse; }
    .ftb-img { width: 100%; }
    .ftb-img img { height: 180px; }
    .ftb-text { padding: 24px; }
    .ftb-text h3 { font-size: 22px; }
}

.themes-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.theme-card {
    text-align: center;
    padding: 30px 16px;
    border-radius: var(--radius-lg);
    transition: all var(--transition);
    border: 1px solid var(--border);
    display: block;
    cursor: default;
    text-decoration: none;
}

.theme-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.theme-icon-wrap {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
    color: #fff;
}

.theme-icon {
    font-size: 28px;
}

.theme-card h4 {
    font-size: 15px;
    color: var(--secondary);
    margin-bottom: 4px;
}

.theme-card p {
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 1px;
}

/* ============================================
   为什么选择我们
   ============================================ */
.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.why-item {
    padding: 32px 24px;
    background: #fff;
    border-radius: var(--radius);
    border-left: 3px solid var(--primary);
    transition: all var(--transition);
}

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

.why-icon {
    font-size: 24px;
    color: var(--primary);
    margin-bottom: 10px;
}

.why-item h4 {
    font-size: 17px;
    color: var(--secondary);
    margin-bottom: 8px;
}

.why-item p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

/* ============================================
   客户案例 - 垂直滚动照片墙
   ============================================ */
.cases-scroll-wrapper {
    display: flex;
    gap: 16px;
    height: 640px;
    overflow: hidden;
    margin-top: 30px;
}

.cases-column {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.cases-track {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.cases-track-up {
    animation: scrollUp 40s linear infinite;
}

.cases-track-down {
    animation: scrollDown 40s linear infinite;
    transform: translateY(-50%);
}

.cases-track-slow {
    animation-duration: 50s;
}

@keyframes scrollUp {
    0% { transform: translateY(0); }
    100% { transform: translateY(-50%); }
}

@keyframes scrollDown {
    0% { transform: translateY(-50%); }
    100% { transform: translateY(0); }
}

.cases-track img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    object-fit: cover;
    aspect-ratio: 4 / 3;
    display: block;
    transition: transform 0.3s ease;
}

.cases-track img:hover {
    transform: scale(1.03);
}

.case-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    flex-shrink: 0;
}

.case-item img {
    width: 100%;
    height: auto;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    display: block;
    border-radius: var(--radius-lg);
    transition: transform 0.3s ease;
}

.case-item:hover img {
    transform: scale(1.03);
}

.case-title {
    display: block;
    padding: 8px 4px 0;
    color: var(--secondary);
    font-size: 13px;
    font-weight: 600;
    text-align: center;
    line-height: 1.4;
}

@media (max-width: 768px) {
    .cases-scroll-wrapper {
        height: 420px;
        gap: 8px;
    }
    .cases-track {
        gap: 8px;
    }
    .cases-track-up,
    .cases-track-down {
        animation-duration: 30s;
    }
}

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

.about-text .section-title {
    text-align: left;
}

.about-lead {
    font-size: 18px;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 16px;
}

.about-text p {
    margin-bottom: 14px;
    color: var(--text-light);
    line-height: 1.9;
}

.about-contact-row {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-top: 24px;
}

.about-phone {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.about-feat {
    display: flex;
    gap: 14px;
    padding: 18px;
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.about-feat:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
}

.about-feat-icon {
    font-size: 24px;
    color: var(--primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.about-feat h4 {
    font-size: 15px;
    color: var(--secondary);
    margin-bottom: 4px;
}

.about-feat p {
    font-size: 13px;
    color: var(--text-light);
}

/* ============================================
   客户Logo
   ============================================ */
.clients-section {
    padding: 60px 0;
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.client-item {
    width: 100%;
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: all var(--transition);
}

.client-item img {
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: all var(--transition);
}

.client-item:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

/* ============================================
   新闻资讯
   ============================================ */
.news-grid {
    display: grid;
    gap: 16px;
}

.news-card {
    display: flex;
    gap: 20px;
    padding: 20px 24px;
    background: #fff;
    border-radius: var(--radius);
    transition: all var(--transition);
    border: 1px solid var(--border);
}

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

.news-date {
    text-align: center;
    flex-shrink: 0;
    min-width: 56px;
}

.news-day {
    display: block;
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.news-month {
    font-size: 12px;
    color: var(--text-muted);
}

.news-content h4 {
    font-size: 16px;
    margin-bottom: 6px;
}

.news-content h4 a:hover {
    color: var(--primary);
}

.news-content p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ============================================
   常见问题
   ============================================ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-bottom: 16px;
    overflow: hidden;
    transition: all var(--transition);
}

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

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary);
    transition: all var(--transition);
}

.faq-question:hover {
    color: var(--primary);
}

.faq-icon {
    font-size: 20px;
    font-weight: 400;
    color: var(--primary);
    transition: transform var(--transition);
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition), padding var(--transition);
    padding: 0 24px;
}

.faq-answer p {
    color: var(--text-light);
    line-height: 1.8;
    font-size: 15px;
    padding-bottom: 20px;
}

.faq-item.active {
    border-color: var(--primary-light);
    box-shadow: var(--shadow);
}

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

.faq-item.active .faq-answer {
    max-height: 300px;
}

@media (max-width: 768px) {
    .faq-question {
        padding: 16px 20px;
        font-size: 15px;
    }
    .faq-answer {
        padding: 0 20px;
    }
    .faq-answer p {
        font-size: 14px;
        padding-bottom: 16px;
    }
}

/* ============================================
   项目大全卡片
   ============================================ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.project-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px 20px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.project-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(244,121,32,0.1);
    color: var(--primary);
    font-size: 12px;
    border-radius: 20px;
    margin-bottom: 12px;
    font-weight: 600;
}

.project-tag.theme {
    background: rgba(30,58,95,0.1);
    color: var(--secondary);
}

.project-card h4 {
    font-size: 16px;
    color: var(--secondary);
    margin-bottom: 8px;
    font-weight: 600;
}

.project-card p {
    font-size: 13px;
    color: #777;
    line-height: 1.6;
}

@media (max-width: 1024px) {
    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    .project-card {
        padding: 18px 16px;
    }
}

@media (max-width: 480px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   CTA 联系我们
   ============================================ */
.cta-section {
    background: linear-gradient(rgba(30,41,59,0.82), rgba(51,65,85,0.82)), url('../images/cta-bg.jpg') center/cover no-repeat;
    padding: 60px 0;
}

.cta-inner {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 40px;
    align-items: center;
}

.cta-text {
    color: #fff;
}

.cta-text h2 {
    font-size: 30px;
    margin-bottom: 14px;
}

.cta-text p {
    font-size: 15px;
    opacity: 0.85;
}

.cta-text strong {
    color: var(--primary-light);
}

.cta-form {
    background: #fff;
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-bottom: 14px;
}

.cta-form input,
.cta-form textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
    transition: border-color var(--transition);
}

.cta-form input:focus,
.cta-form textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(244,121,32,0.1);
}

.cta-form textarea {
    margin-bottom: 14px;
    resize: vertical;
}

.cta-qrcode {
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;
}

.qr-item {
    background: #fff;
    padding: 12px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow);
    width: 130px;
}

.qr-item img {
    width: 100%;
    height: auto;
    border-radius: var(--radius);
    display: block;
}

.qr-item span {
    display: block;
    margin-top: 8px;
    font-size: 13px;
    color: var(--secondary);
    font-weight: 600;
}

/* ============================================
   页脚
   ============================================ */
.footer {
    background: #1a1f2e;
    color: #ccc;
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
}

.footer-logo {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-logo-img {
    height: 44px;
    width: auto;
    display: block;
    filter: invert(1) brightness(2) contrast(1.5);
    mix-blend-mode: screen;
}

.footer-about p {
    font-size: 13px;
    line-height: 1.8;
}

.footer-col h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 16px;
    position: relative;
    padding-bottom: 8px;
}

.footer-col h4::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--primary);
}

.footer-col li {
    margin-bottom: 8px;
}

.footer-col a {
    font-size: 13px;
    transition: color var(--transition);
}

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

.footer-contact li {
    font-size: 16px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: 40px;
    padding: 20px 0;
    text-align: center;
    font-size: 12px;
}

/* ============================================
   返回顶部
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 16px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    z-index: 999;
    box-shadow: 0 4px 12px rgba(244,121,32,0.4);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* ============================================
   响应式设计
   ============================================ */

/* 平板 */
@media (max-width: 1024px) {
    .services-grid,
    .programs-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .themes-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

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

    .cta-qrcode {
        flex-direction: row;
        justify-content: center;
        gap: 20px;
    }

    .qr-item {
        width: 110px;
        padding: 10px;
    }

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

/* 手机 */
@media (max-width: 768px) {
    :root {
        --header-height: 78px;
    }

    /* 容器 */
    .container {
        padding: 0 16px;
    }

    /* 导航 */
    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: #fff;
        padding: 20px;
        transform: translateX(100%);
        transition: transform var(--transition);
        overflow-y: auto;
        z-index: 999;
    }

    .nav.open {
        transform: translateX(0);
    }

    .nav-list {
        flex-direction: column;
        gap: 4px;
    }

    .nav-link {
        padding: 14px 16px;
        font-size: 16px;
    }

    .header-contact {
        display: none;
    }

    .header-inner {
        justify-content: space-between;
    }

    .logo-img {
        height: 50px;
    }

    .menu-toggle {
        display: flex;
    }

    /* Hero */
    .hero {
        height: auto;
        min-height: 70vh;
        padding: 90px 0 100px;
    }

    .hero-dots {
        bottom: 80px;
    }

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

    .hero-sub {
        font-size: 15px;
        letter-spacing: 2px;
    }

    .hero-desc {
        font-size: 14px;
    }

    .hero-stats-inner {
        flex-wrap: wrap;
        gap: 16px;
    }

    .stat-number {
        font-size: 24px;
    }

    /* 网格 */
    .services-grid,
    .programs-grid,
    .cases-grid,
    .why-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    /* 移动端只显示前6个方案卡片 */
    .programs-grid .program-card:nth-child(n+7) {
        display: none;
    }

    .themes-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }

    /* 分类卡片变小 */
    .theme-card {
        padding: 16px 8px;
    }

    .theme-icon-wrap {
        width: 44px;
        height: 44px;
        margin-bottom: 8px;
    }

    .theme-icon {
        font-size: 20px;
    }

    .theme-card h4 {
        font-size: 13px;
        margin-bottom: 2px;
    }

    .theme-card p {
        font-size: 9px;
        letter-spacing: 0.5px;
    }

    /* CTA 二维码 - 横排缩小 */
    .cta-qrcode {
        flex-direction: row;
        flex-wrap: nowrap;
        gap: 8px;
        justify-content: center;
    }

    .qr-item {
        width: 78px;
        padding: 5px;
    }

    .qr-item img {
        width: 100%;
        height: auto;
    }

    .qr-item span {
        font-size: 10px;
        margin-top: 3px;
    }

    /* 方案卡片 */
    .program-img {
        height: 160px;
    }

    .program-day {
        font-size: 16px;
        padding: 4px 12px;
    }

    .program-info {
        padding: 14px 16px 16px;
    }

    .program-info h4 {
        font-size: 16px;
        margin-bottom: 6px;
    }

    .program-desc {
        font-size: 13px;
        line-height: 1.5;
        margin-bottom: 10px;
    }

    .program-meta {
        flex-wrap: wrap;
        gap: 8px;
    }

    .program-price {
        font-size: 20px;
    }

    .btn-sm {
        padding: 8px 16px;
        font-size: 13px;
    }

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

    .section {
        padding: 40px 0;
    }

    .section-header {
        margin-bottom: 28px;
    }

    /* CTA 表单 */
    .cta-form {
        padding: 20px;
    }

    .cta-section {
        padding: 40px 0;
    }

    .cta-text h2 {
        font-size: 22px;
    }

    .cta-text p {
        font-size: 14px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }

    .footer {
        padding: 30px 0 0;
    }

    .footer-col h4 {
        font-size: 14px;
        margin-bottom: 10px;
    }

    .footer-col li {
        margin-bottom: 4px;
    }

    .footer-col a,
    .footer-about p,
    .footer-contact li {
        font-size: 12px;
    }

    .footer-logo-img {
        height: 32px;
    }

    .footer-bottom {
        margin-top: 20px;
        padding: 12px 0;
    }

    /* 服务卡片 - 手机端更紧凑 */
    .service-card {
        padding: 16px 12px;
    }

    .service-icon {
        font-size: 28px;
        margin-bottom: 8px;
    }

    .service-card h3 {
        font-size: 15px;
        margin-bottom: 6px;
    }

    .service-card > p {
        font-size: 12px;
        margin-bottom: 10px;
        line-height: 1.5;
    }

    .service-features {
        margin-bottom: 12px;
    }

    .service-features li {
        font-size: 11px;
        padding: 2px 0;
    }

    .services-grid {
        gap: 10px;
    }

    .about-features {
        gap: 10px;
    }

    .clients-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 14px;
    }

    .client-item {
        height: 75px;
        padding: 10px;
    }
}

/* 小屏手机 */
@media (max-width: 480px) {
    .hero-title {
        font-size: 22px;
    }

    .themes-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }

    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }

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

    /* CTA 二维码 - 小屏也保持横排 */
    .cta-qrcode {
        flex-direction: row;
        flex-wrap: nowrap;
        gap: 6px;
    }

    .qr-item {
        width: 70px;
        padding: 4px;
    }

    .qr-item span {
        font-size: 9px;
        margin-top: 2px;
    }

    /* 方案卡片 - 小屏优化 */
    .program-img {
        height: 130px;
    }

    .program-info {
        padding: 12px;
    }

    .program-info h4 {
        font-size: 14px;
        margin-bottom: 6px;
    }

    .program-desc {
        font-size: 12px;
        -webkit-line-clamp: 2;
    }

    .program-price {
        font-size: 17px;
    }

    .program-price span {
        font-size: 11px;
    }

    .btn-sm {
        padding: 5px 10px;
        font-size: 11px;
    }

    .section-title {
        font-size: 22px;
    }
}

/* --- 分类页面切换导航 --- */
.category-nav {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 30px;
    flex-wrap: wrap;
}
.category-nav a {
    display: inline-block;
    padding: 10px 24px;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s;
    background: rgba(255,255,255,0.15);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.25);
}
.category-nav a:hover {
    background: rgba(255,255,255,0.35);
    border-color: rgba(255,255,255,0.55);
}
.category-nav a.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

@media (max-width: 768px) {
    .category-nav {
        gap: 8px;
        padding: 0 10px;
    }
    .category-nav a {
        padding: 8px 16px;
        font-size: 13px;
    }
}

/* ========== 项目轮播 ========== */
.project-carousel {
    overflow: hidden;
    padding: 30px 0;
    position: relative;
}

.project-carousel::before,
.project-carousel::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 80px;
    z-index: 2;
    pointer-events: none;
}

.project-carousel::before {
    left: 0;
    background: linear-gradient(to right, #fff, transparent);
}

.project-carousel::after {
    right: 0;
    background: linear-gradient(to left, #fff, transparent);
}

.carousel-track {
    display: flex;
    gap: 20px;
    width: max-content;
    animation: scroll-left 300s linear infinite;
}

.carousel-track:hover {
    animation-play-state: paused;
}

@keyframes scroll-left {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.carousel-item {
    flex-shrink: 0;
    width: 200px;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
}

.carousel-item img {
    width: 200px;
    height: 150px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.carousel-item:hover img {
    transform: scale(1.05);
}

.carousel-item p {
    margin-top: 8px;
    font-size: 14px;
    color: #333;
    font-weight: 500;
    text-decoration: none;
}

/* 反向轮播（从右向左 → 改为 从左向右） */
.carousel-track-reverse {
    display: flex;
    gap: 20px;
    width: max-content;
    animation: scroll-right 143s linear infinite;
}

.carousel-track-reverse:hover {
    animation-play-state: paused;
}

@keyframes scroll-right {
    0% { transform: translateX(-50%); }
    100% { transform: translateX(0); }
}

/* 深色背景下的轮播渐变遮罩 */
.project-carousel-dark::before {
    background: linear-gradient(to right, #f8f9fa, transparent) !important;
}
.project-carousel-dark::after {
    background: linear-gradient(to left, #f8f9fa, transparent) !important;
}

/* 拓展项目轮播卡片 */
.exp-carousel-item {
    flex-shrink: 0;
    width: 240px;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 3px 12px rgba(0,0,0,0.08);
    text-decoration: none;
    color: inherit;
    transition: all 0.3s;
    display: block;
    cursor: pointer;
}

.exp-carousel-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.exp-carousel-item .exp-carousel-img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    display: block;
}

.exp-carousel-item .exp-carousel-body {
    padding: 14px 16px;
}

.exp-carousel-item .exp-carousel-body .exp-cat-tag {
    display: inline-block;
    padding: 3px 10px;
    font-size: 11px;
    border-radius: 12px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #fff;
}

.exp-carousel-item .exp-carousel-body .exp-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 6px;
    line-height: 1.4;
}

.exp-carousel-item .exp-carousel-body .exp-intro {
    font-size: 12px;
    color: #888;
    line-height: 1.5;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.exp-carousel-item .exp-carousel-body .exp-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 11px;
    color: #aaa;
}

.exp-carousel-item .exp-carousel-body .exp-meta .exp-detail {
    color: var(--primary);
    font-weight: 600;
    font-size: 12px;
}

/* ==================== 浮动在线客服组件 ==================== */
.contact-widget {
    position: fixed;
    right: 0;
    top: 20%;
    z-index: 9999;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
}

.contact-panel {
    background: #fff;
    width: 240px;
    border-radius: 10px 0 0 10px;
    box-shadow: -4px 0 18px rgba(0, 0, 0, 0.12);
    overflow: hidden;
}

.contact-panel-header {
    background: linear-gradient(180deg, #f47920, #e96b15);
    color: #fff;
    padding: 12px 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    user-select: none;
}

.contact-toggle-icon {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.22);
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-toggle-text {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    line-height: 1.2;
}

.contact-panel-inner {
    padding: 16px 14px;
    box-sizing: border-box;
}

.contact-qrcode {
    width: 140px;
    height: 140px;
    margin: 0 auto 10px;
    background: #fafafa;
    border: 1px solid #eee;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.contact-qrcode img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.contact-qrcode-placeholder {
    color: #bbb;
    font-size: 13px;
    text-align: center;
    padding: 0 12px;
}

.contact-qrcode-tip {
    text-align: center;
    color: #f47920;
    font-size: 12px;
    margin-bottom: 16px;
    font-weight: 500;
}

.contact-info {
    border-top: 1px dashed #eee;
    padding-top: 14px;
}

.contact-info-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 11px;
    color: #333;
    font-size: 13px;
}

.contact-info-item:last-child {
    margin-bottom: 0;
}

.contact-info-item .info-icon {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: rgba(244, 121, 32, 0.12);
    color: #f47920;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    flex-shrink: 0;
}

.contact-info-item .info-text {
    flex: 1;
    word-break: break-all;
}

/* 移动端适配 */
@media (max-width: 1024px) {
    .contact-widget {
        display: none !important;
    }
}