/* ============================================
   哈尔滨气球布置派对营销网站 - 全局样式
   ============================================ */

/* --- 字体定义 --- */
@font-face {
  font-family: 'Outfit';
  src: url('../fonts/Outfit-Regular.ttf') format('truetype');
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: 'Outfit';
  src: url('../fonts/Outfit-Bold.ttf') format('truetype');
  font-weight: 700;
  font-display: swap;
}
@font-face {
  font-family: 'InstrumentSans';
  src: url('../fonts/InstrumentSans-Regular.ttf') format('truetype');
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: 'InstrumentSans';
  src: url('../fonts/InstrumentSans-Bold.ttf') format('truetype');
  font-weight: 700;
  font-display: swap;
}

/* --- CSS变量 --- */
:root {
  --primary: #1a1a2e;
  --accent: #c9a96e;
  --accent-light: #e8d5b5;
  --ink: #333333;
  --ink-light: #666666;
  --muted: #999999;
  --bg: #f5f5f5;
  --bg-white: #ffffff;
  --rule: #e5e5e5;
  --rule-dark: #d0d0d0;
  --shadow: rgba(0,0,0,0.08);
  --shadow-hover: rgba(0,0,0,0.12);
  --max-width: 1200px;
  --header-height: 70px;
  --mobile-bottom-height: 60px;
  --font-heading: 'Outfit', 'Microsoft YaHei', sans-serif;
  --font-body: 'InstrumentSans', 'Microsoft YaHei', sans-serif;
  --radius: 4px;
  --radius-lg: 8px;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--ink);
  background-color: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  min-width: 320px;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

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

ul, ol {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* --- 顶部通栏 --- */
.top-bar {
  background: var(--primary);
  color: rgba(255,255,255,0.75);
  font-size: 0.82rem;
  height: 36px;
}

.top-bar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.top-bar-welcome {
  display: flex;
  align-items: center;
  gap: 6px;
}

.top-bar-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.top-bar-links a {
  color: rgba(255,255,255,0.75);
  padding: 0 10px;
  transition: color 0.3s ease;
}

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

.top-bar-links .top-bar-sep {
  color: rgba(255,255,255,0.3);
  font-size: 0.75rem;
}

/* --- 头部导航 --- */
.site-header {
  background: var(--bg-white);
  box-shadow: 0 2px 10px var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo svg {
  width: 32px;
  height: 32px;
  stroke: var(--primary);
  fill: none;
}

.hotline {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.95rem;
  color: var(--ink-light);
}

.hotline svg {
  width: 18px;
  height: 18px;
  stroke: var(--accent);
  fill: none;
}

.hotline strong {
  color: var(--primary);
  font-weight: 700;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0;
}

.main-nav a {
  display: block;
  padding: 0 22px;
  font-size: 0.92rem;
  color: var(--ink);
  line-height: var(--header-height);
  position: relative;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--primary);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 60%;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-btn svg {
  width: 24px;
  height: 24px;
  stroke: var(--primary);
  fill: none;
}

/* --- Banner轮播 --- */
.banner-section {
  position: relative;
  width: 100%;
  overflow: hidden;
  background: var(--primary);
}

.banner-slider {
  position: relative;
  width: 100%;
  height: 520px;
}

.banner-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.8s ease;
  display: flex;
  align-items: center;
}

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

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

.banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, rgba(26,26,46,0.75) 0%, rgba(26,26,46,0.3) 60%, transparent 100%);
}

.banner-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

.banner-content h1 {
  font-family: var(--font-heading);
  font-size: 2.6rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  line-height: 1.3;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.banner-content p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: 28px;
  max-width: 560px;
  line-height: 1.7;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  background: var(--accent);
  color: var(--primary);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius);
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: #b8985a;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(201,169,110,0.3);
}

.banner-dots {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}

.banner-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
}

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

/* --- 通用板块标题 --- */
.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-header h2 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.section-header h2 svg {
  width: 24px;
  height: 24px;
  stroke: var(--accent);
  fill: none;
}

.section-header p {
  color: var(--muted);
  font-size: 0.95rem;
}

.section-line {
  width: 50px;
  height: 3px;
  background: var(--accent);
  margin: 12px auto 0;
}

/* --- 内容板块容器 --- */
.section-white {
  background: var(--bg-white);
  padding: 60px 0;
}

.section-gray {
  background: var(--bg);
  padding: 60px 0;
}

/* --- 关于我们 --- */
.about-section {
  background: var(--bg-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.about-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 30px var(--shadow);
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-content h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 20px;
}

.about-content p {
  color: var(--ink-light);
  margin-bottom: 14px;
  font-size: 0.95rem;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 24px;
}

.about-feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--ink);
}

.about-feature-item svg {
  width: 18px;
  height: 18px;
  stroke: var(--accent);
  fill: none;
  flex-shrink: 0;
}

/* --- 服务展示 --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 2px 12px var(--shadow);
  transition: all 0.3s ease;
  border: 1px solid var(--rule);
  display: block;
  color: inherit;
  text-decoration: none;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--shadow-hover);
}

.service-card-image {
  width: 100%;
  height: 170px;
  background: linear-gradient(135deg, var(--accent-light) 0%, var(--accent) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-card-image svg {
  width: 56px;
  height: 56px;
  stroke: var(--primary);
  fill: none;
  opacity: 0.7;
}

.service-card-body {
  padding: 20px;
}

.service-card-body h4 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
}

.service-card-body p {
  font-size: 0.85rem;
  color: var(--ink-light);
  line-height: 1.6;
}

/* --- 承接场景 --- */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
}

/* --- 精选人气场景 --- */
.hot-scenes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.hot-scene-card {
  background: var(--bg);
  border-radius: 8px;
  padding: 24px;
  border: 1px solid var(--rule);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hot-scene-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px var(--shadow-hover);
}

.hot-scene-icon {
  width: 48px;
  height: 48px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.hot-scene-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--accent);
  fill: none;
}

.hot-scene-card h4 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  color: var(--primary);
  margin-bottom: 8px;
}

.hot-scene-card p {
  font-size: 0.88rem;
  color: var(--ink-light);
  line-height: 1.7;
}

/* --- 服务优势 --- */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.advantage-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  box-shadow: 0 2px 12px var(--shadow);
  border: 1px solid var(--rule);
  transition: all 0.3s ease;
}

.advantage-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--shadow-hover);
}

.advantage-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--accent);
  border-radius: 50%;
}

.advantage-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--accent);
  fill: none;
}

.advantage-card h4 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 10px;
}

.advantage-card p {
  font-size: 0.88rem;
  color: var(--ink-light);
  line-height: 1.6;
}

/* --- 新闻资讯 / 常见问题 --- */
.news-grid, .faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.news-item, .faq-item {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: 0 2px 8px var(--shadow);
  border: 1px solid var(--rule);
  transition: all 0.3s ease;
}

.news-item:hover, .faq-item:hover {
  box-shadow: 0 4px 16px var(--shadow-hover);
}

.news-header, .faq-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.news-title, .faq-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--primary);
  font-size: 0.95rem;
}

.news-title svg, .faq-title svg {
  width: 16px;
  height: 16px;
  stroke: var(--accent);
  fill: none;
  flex-shrink: 0;
}

.news-date, .faq-date {
  font-size: 0.8rem;
  color: var(--muted);
  flex-shrink: 0;
  margin-left: 10px;
}

.news-desc, .faq-desc {
  font-size: 0.88rem;
  color: var(--ink-light);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  padding-left: 24px;
}

/* --- 案例展示 --- */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.case-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 2px 12px var(--shadow);
  cursor: pointer;
  transition: all 0.3s ease;
  display: block;
  color: inherit;
  text-decoration: none;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--shadow-hover);
}

.case-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.case-card:hover img {
  transform: scale(1.05);
}

.case-tag {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 14px 16px;
  background: linear-gradient(transparent, rgba(26,26,46,0.85));
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
}

/* --- 友情链接 --- */
.friend-links {
  background: var(--bg-white);
  padding: 30px 0;
  border-top: 1px solid var(--rule);
}

.friend-links h4 {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 12px;
  font-weight: 500;
}

.friend-links-list {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
}

.friend-links-list a {
  font-size: 0.88rem;
  color: var(--ink-light);
  transition: color 0.3s ease;
}

.friend-links-list a:hover {
  color: var(--accent);
}

/* --- 页脚 --- */
.site-footer {
  background: var(--primary);
  color: rgba(255,255,255,0.7);
  padding: 50px 0 20px;
}

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

.footer-brand h3 {
  font-family: var(--font-heading);
  color: #fff;
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.65;
  margin-bottom: 16px;
}

.footer-brand-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
}

.footer-brand-nav a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  transition: color 0.3s ease;
}

.footer-brand-nav a:hover {
  color: var(--accent);
}

.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 16px;
  font-weight: 600;
}

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

.footer-col ul li a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.7);
  transition: color 0.3s ease;
}

.footer-col ul li a:hover {
  color: var(--accent);
}

.footer-contact p {
  font-size: 0.88rem;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-contact svg {
  width: 16px;
  height: 16px;
  stroke: var(--accent);
  fill: none;
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
}

/* --- 面包屑导航 --- */
.breadcrumb-bar {
  background: var(--bg-white);
  border-bottom: 1px solid var(--rule);
}

.breadcrumb-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--muted);
}

.breadcrumb-inner a {
  color: var(--ink-light);
  transition: color 0.3s ease;
}

.breadcrumb-inner a:hover {
  color: var(--accent);
}

.breadcrumb-inner span.current {
  color: var(--primary);
  font-weight: 500;
  padding-left: 3px;
}

.breadcrumb-sep {
  color: var(--rule-dark);
}

/* --- 内页Banner --- */
.inner-banner {
  width: 100%;
  height: 240px;
  position: relative;
  overflow: hidden;
}

.inner-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.inner-banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(26,26,46,0.55);
  display: flex;
  align-items: center;
  justify-content: center;
}

.inner-banner-title {
  color: #fff;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

/* --- 左侧导航 --- */
.page-layout {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 20px;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 30px;
}

.sidebar-nav {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 12px var(--shadow);
  border: 1px solid var(--rule);
  overflow: hidden;
  height: fit-content;
  position: sticky;
  top: 90px;
}

.sidebar-nav-title {
  background: var(--primary);
  color: #fff;
  padding: 16px 20px;
  font-weight: 600;
  font-size: 1rem;
}

.sidebar-nav ul li a {
  display: block;
  padding: 14px 20px;
  font-size: 0.9rem;
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
  transition: all 0.3s ease;
  position: relative;
}

.sidebar-nav ul li a::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.sidebar-nav ul li a:hover,
.sidebar-nav ul li a.active {
  background: var(--bg);
  color: var(--primary);
  padding-left: 24px;
}

.sidebar-nav ul li a:hover::before,
.sidebar-nav ul li a.active::before {
  opacity: 1;
}

/* --- 侧边栏联系卡片 --- */
.sidebar-contact-card {
  margin-top: 20px;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 12px var(--shadow);
  border: 1px solid var(--rule);
  overflow: hidden;
}

.sidebar-contact-card-title {
  background: var(--primary);
  color: #fff;
  padding: 16px 20px;
  font-weight: 600;
  font-size: 1rem;
}

.sidebar-contact-img {
  width: 100%;
  height: 230px;
  object-fit: cover;
  display: block;
}

.sidebar-contact-info {
  padding: 16px 20px;
}

.sidebar-contact-info .sci-name {
  font-family: var(--font-heading);
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 10px;
}

.sidebar-contact-info .sci-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--ink-light);
  margin-bottom: 8px;
  line-height: 1.6;
}

.sidebar-contact-info .sci-item svg {
  width: 16px;
  height: 16px;
  stroke: var(--accent);
  fill: none;
  flex-shrink: 0;
  margin-top: 3px;
}

.sidebar-contact-info .sci-item strong {
  color: var(--ink);
  font-weight: 600;
}

/* --- 列表页内容 --- */
.page-content {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 12px var(--shadow);
  border: 1px solid var(--rule);
  padding: 30px;
  min-height: 500px;
}
.page-content .detail-title{font-size: 24px;}

.page-content-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--rule);
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-content-title svg {
  width: 22px;
  height: 22px;
  stroke: var(--accent);
  fill: none;
}

/* 文章列表 */
.article-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
  transition: all 0.3s ease;
}

.article-list-item:hover {
  padding-left: 8px;
}

.article-list-item:last-child {
  border-bottom: none;
}

.article-list-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--ink);
  font-weight: 500;
}

.article-list-title svg {
  width: 16px;
  height: 16px;
  stroke: var(--accent);
  fill: none;
  flex-shrink: 0;
}

.article-list-date {
  font-size: 0.82rem;
  color: var(--muted);
  flex-shrink: 0;
  margin-left: 16px;
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  color: var(--ink-light);
  border: 1px solid var(--rule);
  transition: all 0.3s ease;
}

.pagination a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.pagination a.active {
  background: var(--accent);
  color: var(--primary);
  border-color: var(--accent);
  font-weight: 600;
}

.pagination .total-info {
  color: var(--muted);
  font-size: 0.82rem;
  margin-right: 12px;
}

/* 卡片列表（服务/案例） */
.card-list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card-list-item {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 2px 8px var(--shadow);
  border: 1px solid var(--rule);
  transition: all 0.3s ease;
}

.card-list-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px var(--shadow-hover);
}

.card-list-item img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.card-list-item-body {
  padding: 16px;
}

.card-list-item-body h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 6px;
}

.card-list-item-body p {
  font-size: 0.85rem;
  color: var(--ink-light);
}

/* --- 详情页 --- */
.detail-content h1 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}

.detail-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--rule);
}

.detail-body {
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--ink);
}

.detail-body p {
  margin-bottom: 16px;
}

.detail-body img {
  border-radius: var(--radius-lg);
  margin: 16px 0;
}

.detail-nav {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

.detail-nav a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--ink-light);
  transition: color 0.3s ease;
  max-width: 48%;
}

.detail-nav a:hover {
  color: var(--accent);
}

.detail-nav svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  flex-shrink: 0;
}

.detail-nav span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.related-section {
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
}

.related-section h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 16px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.related-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px;
  background: var(--bg);
  border-radius: var(--radius);
  transition: all 0.3s ease;
}

.related-item:hover {
  background: var(--rule);
}

.related-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.related-item-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--ink);
}

.related-item-title svg {
  width: 14px;
  height: 14px;
  stroke: var(--accent);
  fill: none;
  flex-shrink: 0;
}

.related-item-date {
  font-size: 0.78rem;
  color: var(--muted);
}

.related-item-desc {
  font-size: 0.85rem;
  color: var(--ink-light);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  padding-left: 20px;
}

/* --- 回到顶部按钮 --- */
.back-to-top {
  position: fixed;
  bottom: 80px;
  right: 20px;
  width: 44px;
  height: 44px;
  background: var(--accent);
  color: var(--primary);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 10px rgba(201,169,110,0.4);
  transition: all 0.3s ease;
  opacity: 0;
  visibility: hidden;
  z-index: 999;
}

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

.back-to-top:hover {
  background: #b8985a;
  transform: translateY(-3px);
  box-shadow: 0 4px 16px rgba(201,169,110,0.5);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
  stroke: var(--primary);
  fill: none;
}

@media (max-width: 1024px) {
  .back-to-top {
    bottom: 80px;
    right: 16px;
    width: 40px;
    height: 40px;
  }

  .back-to-top svg {
    width: 18px;
    height: 18px;
  }
}

/* --- 手机端底部固定导航 --- */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-white);
  border-top: 1px solid var(--rule);
  z-index: 1000;
  height: var(--mobile-bottom-height);
}

.mobile-bottom-nav-inner {
  display: flex;
  justify-content: space-around;
  align-items: center;
  height: 100%;
}

.mobile-bottom-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  color: var(--muted);
  font-size: 0.7rem;
  flex: 1;
  height: 100%;
  transition: color 0.3s ease;
}

.mobile-bottom-nav a.active,
.mobile-bottom-nav a:hover {
  color: var(--accent);
}

.mobile-bottom-nav a svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
}

/* --- 网站地图 --- */
.sitemap-section {
  background: var(--bg-white);
  padding: 40px 0;
}

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

.sitemap-links-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.sitemap-col h4 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}

.sitemap-col ul li {
  margin-bottom: 10px;
}

.sitemap-col ul li a {
  font-size: 0.9rem;
  color: var(--ink-light);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.3s ease;
}

.sitemap-col ul li a:hover {
  color: var(--accent);
}

.sitemap-col ul li a::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* --- 响应式设计 --- */
@media (max-width: 1024px) {
  :root {
    --header-height: 60px;
  }

  .mobile-menu-btn {
    display: block;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    box-shadow: 0 4px 12px var(--shadow);
    border-top: 1px solid var(--rule);
  }

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

  .main-nav a {
    width: 100%;
    padding: 0 20px;
    line-height: 48px;
    border-bottom: 1px solid var(--rule);
  }

  .main-nav a::after {
    display: none;
  }

  .hotline {
    display: none;
  }

  .top-bar {
    display: none;
  }

  .banner-slider {
    height: 380px;
  }

  .banner-content h1 {
    font-size: 1.6rem;
  }

  .banner-content p {
    font-size: 0.95rem;
  }

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

  .about-image {
    order: -1;
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .scene-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .hot-scenes-grid {
    grid-template-columns: 1fr;
  }

  .hot-scene-card {
    padding: 20px;
  }

  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .news-grid, .faq-grid {
    grid-template-columns: 1fr;
  }

  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .friend-links {
    display: none;
  }

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

  .page-layout {
    grid-template-columns: 1fr;
    padding: 20px;
  }

  .sidebar-nav {
    display: none;
  }

  .card-list-grid {
    grid-template-columns: 1fr;
  }

  .detail-nav {
    flex-direction: column;
    gap: 10px;
  }

  .detail-nav a {
    max-width: 100%;
  }

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

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

  .sitemap-links-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .sidebar-contact-card {
    display: none;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
  }

  .mobile-bottom-nav {
    display: block;
  }

  body {
    padding-bottom: var(--mobile-bottom-height);
  }

  .section-white, .section-gray {
    padding: 40px 0;
  }

  .page-content {
    padding: 20px;
  }

  .inner-banner {
    height: 180px;
  }

  .inner-banner-title {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .service-card-image {
    height: 130px;
  }

  .service-card-body {
    padding: 14px;
  }

  .service-card-body h4 {
    font-size: 0.9rem;
  }

  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .advantage-card {
    padding: 20px 14px;
  }

  .advantage-icon {
    width: 48px;
    height: 48px;
  }

  .advantage-icon svg {
    width: 22px;
    height: 22px;
  }

  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .case-card img {
    height: 140px;
  }

  .case-tag {
    font-size: 0.82rem;
    padding: 10px;
  }
}

/* --- 右侧悬浮服务面板 --- */
.float-panel {
  position: fixed;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 0;
  box-shadow: -2px 2px 16px rgba(0,0,0,0.18);
  border-radius: 8px 0 0 8px;
  overflow: hidden;
}

.float-panel-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  transition: background 0.3s ease;
}

.float-panel-item:hover {
  background: #252545;
}

.float-panel-item svg {
  width: 24px;
  height: 24px;
  stroke: var(--accent);
  fill: none;
  flex-shrink: 0;
}

.float-panel-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.float-panel-text span {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.2;
}

.float-panel-text strong {
  font-size: 0.88rem;
  color: var(--accent);
  font-weight: 700;
  white-space: nowrap;
}

.float-panel-qr {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--primary);
  color: #fff;
}

.float-panel-qr svg {
  width: 24px;
  height: 24px;
  stroke: var(--accent);
  fill: none;
  flex-shrink: 0;
}

.float-panel-qr-text {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
}

.float-panel-qr-text span {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.7);
}

.float-panel-qr img {
  width: 86px;
  height: 86px;
  border-radius: 4px;
  border: 1px solid rgba(255,255,255,0.15);
}

@media (max-width: 1024px) {
  .float-panel {
    display: none;
  }
}

/* ============================================
   分站页面样式
   ============================================ */

/* 分站Banner - 静态单图 */
.area-banner {
  position: relative;
  width: 100%;
  height: 400px;
  overflow: hidden;
  background: var(--primary);
}

.area-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.area-banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, rgba(26,26,46,0.75) 0%, rgba(26,26,46,0.3) 60%, transparent 100%);
}

.area-banner-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.area-banner-content h1 {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
  line-height: 1.3;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.area-banner-content p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.9);
  max-width: 560px;
  line-height: 1.7;
}

/* 分站关于我们 - PC左图右文 */
.area-about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.area-about-grid .about-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 30px var(--shadow);
}

.area-about-grid .about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.area-about-grid .about-content h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 20px;
}

.area-about-grid .about-content p {
  color: var(--ink-light);
  margin-bottom: 14px;
  font-size: 0.95rem;
  line-height: 1.8;
}

/* 分站案例卡片 - 有图有文字 PC端3列 */
.area-cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.area-case-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 2px 12px var(--shadow);
  border: 1px solid var(--rule);
  transition: all 0.3s ease;
}

.area-case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--shadow-hover);
}

.area-case-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.area-case-card-body {
  padding: 18px;
}

.area-case-card-body h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
}

.area-case-card-body p {
  font-size: 0.85rem;
  color: var(--ink-light);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 分站服务流程 */
.area-flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.area-flow-step {
  text-align: center;
  padding: 28px 20px;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 12px var(--shadow);
  border: 1px solid var(--rule);
  transition: all 0.3s ease;
}

.area-flow-step:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--shadow-hover);
}

.area-flow-num {
  width: 50px;
  height: 50px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--accent);
  font-size: 1.2rem;
}

.area-flow-step h4 {
  font-size: 1.05rem;
  color: var(--primary);
  margin-bottom: 10px;
}

.area-flow-step p {
  font-size: 0.85rem;
  color: var(--ink-light);
  line-height: 1.6;
}

/* 分站联系我们 */
.area-contact-box {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: 0 2px 12px var(--shadow);
  border: 1px solid var(--rule);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.area-contact-item {
  text-align: center;
}

.area-contact-item svg {
  width: 36px;
  height: 36px;
  stroke: var(--accent);
  fill: none;
  margin-bottom: 12px;
}

.area-contact-item h4 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 8px;
}

.area-contact-item p {
  font-size: 0.95rem;
  color: var(--ink-light);
  line-height: 1.7;
}

/* 分站链接 */
.area-links {
  background: var(--bg-white);
  padding: 40px 0;
}

.area-links-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.area-links h4 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 16px;
  text-align: center;
}

.area-links-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 20px;
}

.area-links-list a {
  font-size: 0.9rem;
  color: var(--ink-light);
  padding: 4px 0;
  transition: color 0.3s ease;
  white-space: nowrap;
}

.area-links-list a:hover {
  color: var(--accent);
}

/* 分站响应式 */
@media (max-width: 1024px) {
  .area-about-grid {
    grid-template-columns: 1fr;
  }

  .area-about-grid .about-image {
    display: none;
  }

  .area-cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .area-flow-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .area-contact-box {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 30px 20px;
  }

  .area-links {
    display: none;
  }
}

@media (max-width: 768px) {
  .area-banner {
    height: 300px;
  }

  .area-banner-content h1 {
    font-size: 1.6rem;
  }

  .area-banner-content p {
    font-size: 0.95rem;
  }

  .section-white, .section-gray {
    padding: 40px 0;
  }
}

@media (max-width: 480px) {
  .area-case-card img {
    height: 150px;
  }

  .area-flow-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .area-flow-step {
    padding: 20px 14px;
  }
}

/* --- 动画 --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}