/* ============================================
   人兽 影视传媒视频社区 - 原创样式表
   品牌：人兽 | 域名：kaikouwang.cn
   配色方案：深蓝黑+活力红+科技紫
   ============================================ */

/* === 基础重置与变量 === */
:root {
  --c-primary: #1A1A2E;
  --c-accent: #E94560;
  --c-blue: #0F3460;
  --c-purple: #533483;
  --c-bg: #F5F5F7;
  --c-text: #2D2D2D;
  --c-gold: #FFD700;
  --c-white: #FFFFFF;
  --c-gray: #6B7280;
  --c-light: #E5E7EB;
  --c-dark: #111827;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s ease;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

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

body {
  font-family: var(--font);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--c-purple); }
ul { list-style: none; }

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}

/* === 头部导航 === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--c-primary);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

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

.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-img {
  height: 45px;
  width: auto;
}

.logo-text {
  font-size: 28px;
  font-weight: 800;
  color: var(--c-accent);
  letter-spacing: 2px;
}

.nav-list {
  display: flex;
  gap: 6px;
}

.nav-list a {
  display: block;
  padding: 8px 16px;
  color: rgba(255,255,255,0.85);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-list a:hover,
.nav-list a.nav-active {
  color: var(--c-white);
  background: var(--c-accent);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--c-white);
  transition: var(--transition);
}

/* === 搜索栏 === */
.search-bar {
  background: var(--c-blue);
  padding: 10px 0;
}

.search-form {
  display: flex;
  max-width: 680px;
  margin: 0 auto;
  background: var(--c-white);
  border-radius: 50px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.1);
}

.search-input {
  flex: 1;
  border: none;
  padding: 12px 24px;
  font-size: 15px;
  outline: none;
  color: var(--c-text);
  background: transparent;
}

.search-input::placeholder { color: var(--c-gray); }

.search-btn {
  background: var(--c-accent);
  border: none;
  padding: 12px 24px;
  color: var(--c-white);
  cursor: pointer;
  transition: var(--transition);
}

.search-btn:hover { background: #D63851; }

/* === Banner区域 === */
.hero-banner {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.banner-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,26,46,0.92) 0%, rgba(15,52,96,0.85) 50%, rgba(83,52,131,0.78) 100%);
}

.banner-content {
  position: relative;
  z-index: 2;
  padding: 60px 20px;
  text-align: center;
  color: var(--c-white);
}

.banner-title {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 16px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
  line-height: 1.3;
}

.banner-subtitle {
  font-size: 18px;
  max-width: 780px;
  margin: 0 auto 24px;
  opacity: 0.92;
  line-height: 1.8;
}

.banner-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 28px;
}

.tag {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(233,69,96,0.25);
  border: 1px solid rgba(233,69,96,0.5);
  border-radius: 50px;
  font-size: 14px;
  color: var(--c-white);
}

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

.btn {
  display: inline-block;
  padding: 14px 36px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 50px;
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--c-accent);
  color: var(--c-white);
  border-color: var(--c-accent);
}

.btn-primary:hover {
  background: #D63851;
  border-color: #D63851;
  color: var(--c-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(233,69,96,0.4);
}

.btn-outline {
  background: transparent;
  color: var(--c-white);
  border-color: var(--c-white);
}

.btn-outline:hover {
  background: var(--c-white);
  color: var(--c-primary);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 14px;
  border-radius: 50px;
  background: var(--c-accent);
  color: var(--c-white);
  border: none;
}

.btn-sm:hover { background: #D63851; color: var(--c-white); }

.btn-outline-sm {
  background: transparent;
  border: 1px solid var(--c-accent);
  color: var(--c-accent);
}

.btn-outline-sm:hover {
  background: var(--c-accent);
  color: var(--c-white);
}

.banner-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

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

.stat-num {
  display: block;
  font-size: 28px;
  font-weight: 800;
  color: var(--c-gold);
}

.stat-label {
  font-size: 14px;
  opacity: 0.8;
}

/* === 面包屑 === */
.breadcrumb {
  padding: 16px 20px;
  font-size: 14px;
  color: var(--c-gray);
}

.breadcrumb a { color: var(--c-blue); }
.breadcrumb a:hover { color: var(--c-accent); }
.breadcrumb span { margin: 0 6px; }

/* === 通用模块 === */
.section {
  padding: 60px 0;
}

.section:nth-child(even) {
  background: var(--c-white);
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--c-accent);
  margin: 12px auto 0;
  border-radius: 2px;
}

.section-desc {
  font-size: 16px;
  color: var(--c-gray);
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.8;
}

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

/* === 视频卡片网格 === */
.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.video-card {
  background: var(--c-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

.video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.play-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

.video-card:hover .play-overlay {
  opacity: 1;
}

.play-btn {
  width: 64px;
  height: 64px;
  background: rgba(233,69,96,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  cursor: pointer;
}

.play-btn:hover {
  transform: scale(1.1);
  background: var(--c-accent);
}

.play-btn svg {
  margin-left: 4px;
}

.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: var(--c-white);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 13px;
}

.video-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--c-accent);
  color: var(--c-white);
  padding: 3px 12px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}

.video-info {
  padding: 16px;
}

.video-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--c-primary);
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  font-size: 13px;
  color: var(--c-gray);
  margin-bottom: 8px;
}

.video-meta span { margin-right: 12px; }

.video-desc {
  font-size: 14px;
  color: #555;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* === 男星卡片 === */
.star-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.star-card {
  background: var(--c-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

.star-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3/4;
}

.star-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.star-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26,26,46,0.9) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: flex-start;
  padding: 20px;
  opacity: 0;
  transition: var(--transition);
}

.star-card:hover .star-overlay {
  opacity: 1;
}

.star-tag {
  background: var(--c-accent);
  color: var(--c-white);
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 12px;
  margin-bottom: 12px;
}

.star-info {
  padding: 16px;
}

.star-info h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--c-primary);
  margin-bottom: 8px;
}

.star-info p {
  font-size: 14px;
  color: var(--c-gray);
  line-height: 1.6;
  margin-bottom: 8px;
}

.star-stats {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--c-accent);
}

/* === 服务卡片 === */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--c-white);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--c-light);
}

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

.service-icon {
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--c-primary);
  margin-bottom: 12px;
}

.service-card p {
  font-size: 14px;
  color: var(--c-gray);
  line-height: 1.7;
}

/* === AI赋能 === */
.ai-card {
  display: flex;
  gap: 40px;
  align-items: center;
  margin-bottom: 40px;
  background: var(--c-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.ai-card.reverse {
  flex-direction: row-reverse;
}

.ai-card img {
  width: 50%;
  object-fit: cover;
  min-height: 280px;
}

.ai-content {
  flex: 1;
  padding: 32px;
}

.ai-content h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 16px;
}

.ai-content p {
  font-size: 15px;
  color: var(--c-gray);
  line-height: 1.8;
  margin-bottom: 16px;
}

.ai-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ai-tags li {
  padding: 4px 14px;
  background: rgba(83,52,131,0.1);
  color: var(--c-purple);
  border-radius: 50px;
  font-size: 13px;
}

/* === 社区互动 === */
.community-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.community-card {
  background: var(--c-white);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border-top: 3px solid var(--c-purple);
}

.community-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.comm-icon { margin-bottom: 16px; }

.community-card h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--c-primary);
  margin-bottom: 10px;
}

.community-card p {
  font-size: 14px;
  color: var(--c-gray);
  line-height: 1.6;
  margin-bottom: 12px;
}

.comm-stat {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(83,52,131,0.1);
  color: var(--c-purple);
  border-radius: 50px;
  font-size: 12px;
  font-weight: 600;
}

/* === 专家展示 === */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.expert-card {
  display: flex;
  gap: 20px;
  background: var(--c-white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.expert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.expert-card img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.expert-info h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--c-primary);
  margin-bottom: 4px;
}

.expert-title {
  font-size: 14px;
  color: var(--c-accent);
  margin-bottom: 8px;
}

.expert-desc {
  font-size: 13px;
  color: var(--c-gray);
  line-height: 1.6;
  margin-bottom: 10px;
}

.expert-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.expert-tags span {
  padding: 2px 10px;
  background: rgba(15,52,96,0.08);
  color: var(--c-blue);
  border-radius: 50px;
  font-size: 12px;
}

.expert-btns {
  display: flex;
  gap: 8px;
}

/* === 用户评价 === */
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--c-white);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border-left: 4px solid var(--c-accent);
}

.review-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.review-stars {
  color: var(--c-gold);
  font-size: 18px;
  margin-bottom: 12px;
}

.review-text {
  font-size: 14px;
  color: var(--c-text);
  line-height: 1.8;
  margin-bottom: 16px;
  font-style: italic;
}

.review-author {
  border-top: 1px solid var(--c-light);
  padding-top: 12px;
}

.author-name {
  display: block;
  font-weight: 600;
  color: var(--c-primary);
  font-size: 15px;
}

.author-info {
  font-size: 13px;
  color: var(--c-gray);
}

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

.faq-item {
  background: var(--c-white);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  cursor: pointer;
  transition: var(--transition);
}

.faq-question:hover {
  background: rgba(233,69,96,0.03);
}

.faq-question h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--c-primary);
  flex: 1;
}

.faq-toggle {
  font-size: 24px;
  color: var(--c-accent);
  font-weight: 300;
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-answer p {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--c-gray);
  line-height: 1.8;
}

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

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

/* === 合作品牌 === */
.partner-wall {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.partner-item {
  background: var(--c-white);
  border-radius: var(--radius-sm);
  padding: 28px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--c-light);
}

.partner-item:hover {
  border-color: var(--c-accent);
  transform: translateY(-2px);
}

.partner-item span {
  font-size: 16px;
  font-weight: 600;
  color: var(--c-primary);
}

/* === 加入指南 === */
.guide-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.guide-step {
  text-align: center;
  padding: 32px 20px;
  background: var(--c-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
}

.step-num {
  font-size: 48px;
  font-weight: 800;
  color: rgba(233,69,96,0.15);
  margin-bottom: 12px;
  line-height: 1;
}

.guide-step h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--c-primary);
  margin-bottom: 10px;
}

.guide-step p {
  font-size: 14px;
  color: var(--c-gray);
  line-height: 1.6;
}

/* === 社交分享 === */
.share-section {
  padding: 40px 0;
  background: var(--c-primary);
}

.share-section .section-title {
  color: var(--c-white);
  font-size: 24px;
}

.share-section .section-title::after {
  display: none;
}

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

.share-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  transition: var(--transition);
  font-size: 14px;
  font-weight: 600;
}

.share-wechat { background: #07C160; color: var(--c-white); }
.share-weibo { background: #E6162D; color: var(--c-white); }
.share-douyin { background: #161823; color: var(--c-white); border: 1px solid #333; }
.share-bilibili { background: #00A1D6; color: var(--c-white); }
.share-qq { background: #12B7F5; color: var(--c-white); }

.share-btn:hover {
  transform: translateY(-4px) scale(1.1);
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
  color: var(--c-white);
}

.share-icon {
  font-size: 12px;
}

/* === 页脚 === */
.site-footer {
  background: var(--c-dark);
  color: rgba(255,255,255,0.7);
  padding-top: 60px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo {
  height: 40px;
  width: auto;
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.footer-contact-info p {
  font-size: 13px;
  margin-bottom: 6px;
  color: rgba(255,255,255,0.6);
}

.footer-col h4 {
  color: var(--c-white);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}

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

.footer-links ul li a {
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  transition: var(--transition);
}

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

.qr-wrap {
  display: flex;
  gap: 16px;
}

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

.qr-item img {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
  background: var(--c-white);
  padding: 4px;
}

.qr-item span {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
}

.footer-bottom {
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 8px;
}

.footer-tags {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.footer-tags span {
  font-size: 12px;
  color: rgba(255,255,255,0.3);
  padding: 2px 8px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px;
}

/* === 内页通用 === */
.page-hero {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-blue) 50%, var(--c-purple) 100%);
  padding: 80px 0 60px;
  text-align: center;
  color: var(--c-white);
}

.page-hero h1 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 12px;
}

.page-hero p {
  font-size: 17px;
  opacity: 0.85;
  max-width: 680px;
  margin: 0 auto;
}

.page-content {
  padding: 48px 0;
}

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

.content-card {
  background: var(--c-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

.content-card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}

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

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

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

.content-card-body h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--c-primary);
  margin-bottom: 8px;
}

.content-card-body p {
  font-size: 14px;
  color: var(--c-gray);
  line-height: 1.7;
  margin-bottom: 12px;
}

.content-card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--c-gray);
}

/* === 联系页面 === */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.contact-card {
  background: var(--c-white);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}

.contact-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--c-primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--c-accent);
}

.contact-item {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  align-items: flex-start;
}

.contact-label {
  font-weight: 600;
  color: var(--c-primary);
  min-width: 80px;
  font-size: 14px;
}

.contact-value {
  color: var(--c-gray);
  font-size: 14px;
}

/* === 响应式 === */
@media (max-width: 1024px) {
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .star-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .community-grid { grid-template-columns: repeat(2, 1fr); }
  .expert-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-wall { grid-template-columns: repeat(3, 1fr); }
  .guide-steps { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: repeat(2, 1fr); }
  .ai-card { flex-direction: column; }
  .ai-card.reverse { flex-direction: column; }
  .ai-card img { width: 100%; min-height: 200px; }
  .content-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .header-inner { height: 60px; }
  
  .main-nav {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--c-primary);
    padding: 16px;
    box-shadow: var(--shadow-lg);
  }
  
  .main-nav.active { display: block; }
  
  .nav-list {
    flex-direction: column;
    gap: 4px;
  }
  
  .nav-list a {
    padding: 12px 16px;
  }
  
  .mobile-menu-btn { display: flex; }
  
  .banner-title { font-size: 28px; }
  .banner-subtitle { font-size: 15px; }
  .banner-stats { gap: 20px; }
  .stat-num { font-size: 22px; }
  
  .section { padding: 40px 0; }
  .section-title { font-size: 24px; }
  
  .video-grid { grid-template-columns: 1fr; }
  .star-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .partner-wall { grid-template-columns: repeat(2, 1fr); }
  .guide-steps { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .content-grid { grid-template-columns: 1fr; }
  
  .expert-card {
    flex-direction: column;
    text-align: center;
  }
  
  .expert-card img {
    margin: 0 auto;
  }
  
  .expert-tags { justify-content: center; }
  .expert-btns { justify-content: center; }
  
  .page-hero { padding: 60px 0 40px; }
  .page-hero h1 { font-size: 26px; }
  
  .hero-banner { min-height: 480px; }
  
  .banner-btns {
    flex-direction: column;
    align-items: center;
  }
  
  .btn { padding: 12px 28px; font-size: 15px; }
}

@media (max-width: 480px) {
  .banner-title { font-size: 24px; }
  .hero-banner { min-height: 420px; }
  .star-grid { grid-template-columns: 1fr; }
  .partner-wall { grid-template-columns: 1fr; }
  .qr-wrap { flex-direction: column; align-items: center; }
}

/* === 懒加载占位 === */
img.lazy {
  opacity: 0;
  transition: opacity 0.5s ease;
}

img.lazy.loaded {
  opacity: 1;
}

/* === 动画 === */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

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

/* === 滚动条 === */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--c-bg); }
::-webkit-scrollbar-thumb { background: var(--c-accent); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #D63851; }