/* ========================================
   海角 - 主样式文件
   qa073913.cn
   ======================================== */

/* ---- CSS变量 ---- */
:root {
  --primary: #7c3aed;
  --primary-dark: #5b21b6;
  --secondary: #ec4899;
  --accent: #f59e0b;
  --dark: #0f0f1a;
  --dark2: #1a1a2e;
  --white: #ffffff;
  --bg: #f8f7ff;
  --section-alt: #f1f0fa;
  --text: #2d2d3a;
  --text-light: #5a5a72;
  --text-muted: #9898b0;
  --border: #e8e6f5;
  --gradient: linear-gradient(135deg, #7c3aed 0%, #ec4899 100%);
  --gradient2: linear-gradient(135deg, #f59e0b 0%, #ec4899 100%);
  --shadow: 0 2px 12px rgba(124,58,237,0.08);
  --shadow-lg: 0 8px 32px rgba(124,58,237,0.14);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.28s cubic-bezier(0.4,0,0.2,1);
}

/* ---- 重置 ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--secondary); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* ---- 容器 ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---- 顶部公告栏 ---- */
.top-bar {
  background: var(--gradient);
  color: #fff;
  text-align: center;
  font-size: 13px;
  padding: 8px 20px;
  font-weight: 500;
}
.top-bar a { color: #fff; font-weight: 700; text-decoration: underline; }

/* ---- 网站头部 ---- */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 16px rgba(124,58,237,0.07);
}
.header-inner {
  display: flex;
  align-items: center;
  height: 64px;
  gap: 32px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.site-logo img {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  object-fit: cover;
}
.logo-text {
  font-size: 20px;
  font-weight: 900;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}
.logo-sub {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.2;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.main-nav a {
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 8px;
  transition: all var(--transition);
}
.main-nav a:hover, .main-nav a.active {
  background: linear-gradient(135deg, rgba(124,58,237,0.1), rgba(236,72,153,0.1));
  color: var(--primary);
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--white);
  border-top: 1px solid var(--border);
  padding: 12px 20px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.mobile-nav a:last-child { border-bottom: none; }

/* ---- 搜索栏 ---- */
.header-search-bar {
  background: var(--section-alt);
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.search-form {
  display: flex;
  gap: 0;
  max-width: 600px;
  border-radius: 30px;
  overflow: hidden;
  border: 2px solid var(--primary);
  background: var(--white);
}
.search-form input {
  flex: 1;
  padding: 10px 20px;
  border: none;
  outline: none;
  font-size: 14px;
  background: transparent;
  color: var(--text);
}
.search-form button {
  background: var(--gradient);
  color: #fff;
  border: none;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}

/* ---- Hero区 ---- */
.hero-section {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--dark2);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/banner-hero.jpg') center/cover no-repeat;
  opacity: 0.35;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(124,58,237,0.7) 0%, rgba(15,15,26,0.85) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  padding: 60px 0;
}
.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 20px;
  border: 1px solid rgba(255,255,255,0.25);
}
.hero-content h1 {
  font-size: 48px;
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -1px;
}
.hero-content h1 span {
  background: linear-gradient(135deg, #f59e0b, #ec4899);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-content p {
  font-size: 16px;
  color: rgba(255,255,255,0.85);
  line-height: 1.8;
  margin-bottom: 32px;
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 40px; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient);
  color: #fff;
  padding: 13px 28px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 15px;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(124,58,237,0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(124,58,237,0.45); color: #fff; }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: #fff;
  padding: 13px 28px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 15px;
  border: 2px solid rgba(255,255,255,0.5);
  transition: all var(--transition);
}
.btn-outline:hover { background: rgba(255,255,255,0.1); color: #fff; border-color: #fff; }
.hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat .num {
  display: block;
  font-size: 28px;
  font-weight: 900;
  color: #fff;
}
.hero-stat .label {
  display: block;
  font-size: 12px;
  color: rgba(255,255,255,0.6);
  margin-top: 2px;
}

/* ---- 弹幕 ---- */
.danmu-container {
  position: relative;
  height: 40px;
  overflow: hidden;
  background: rgba(124,58,237,0.05);
  border-radius: 8px;
  border: 1px solid var(--border);
}
.danmu-text {
  position: absolute;
  white-space: nowrap;
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  animation: danmu-move linear infinite;
  right: -100%;
}
@keyframes danmu-move {
  from { right: -100%; }
  to { right: 110%; }
}

/* ---- 通用Section ---- */
.section { padding: 64px 0; }
.section-alt { background: var(--section-alt); }
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-tag {
  display: inline-block;
  background: linear-gradient(135deg, rgba(124,58,237,0.1), rgba(236,72,153,0.1));
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}
.section-header h2 {
  font-size: 32px;
  font-weight: 900;
  color: var(--dark);
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}
.section-header p {
  font-size: 15px;
  color: var(--text-light);
  max-width: 560px;
  margin: 0 auto;
}

/* ---- 功能卡片 ---- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.feature-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  border: 1px solid var(--border);
  transition: all var(--transition);
  box-shadow: var(--shadow);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}
.feature-icon {
  font-size: 36px;
  margin-bottom: 14px;
}
.feature-card h3 {
  font-size: 15px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ---- 视频卡片 ---- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.video-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--dark2);
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.video-card:hover .video-thumb img { transform: scale(1.06); }
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  opacity: 0;
  transition: opacity var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-icon {
  width: 52px;
  height: 52px;
  background: rgba(255,255,255,0.95);
  border-radius: 50%;
  position: relative;
}
.play-icon::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 55%;
  transform: translate(-50%, -50%);
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent var(--primary);
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 4px;
}
.video-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--gradient);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 4px;
}
.video-info { padding: 14px; }
.video-info h3 {
  font-size: 13px;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}
.video-meta .icon { font-size: 11px; }

/* ---- 视频弹窗 ---- */
.video-modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
}
.video-modal.open { display: flex; }
.video-modal-inner {
  background: var(--dark2);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 640px;
  padding: 32px;
  position: relative;
}
.video-modal-close {
  position: absolute;
  top: 16px;
  right: 20px;
  color: rgba(255,255,255,0.6);
  font-size: 20px;
  cursor: pointer;
  transition: color var(--transition);
}
.video-modal-close:hover { color: #fff; }
.video-placeholder {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, #1a1a2e, #2d1b69);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}
.video-placeholder-inner { text-align: center; }
.big-play {
  width: 72px;
  height: 72px;
  background: var(--gradient);
  border-radius: 50%;
  position: relative;
  margin: 0 auto 16px;
  cursor: pointer;
  animation: pulse 2s infinite;
}
.big-play::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 55%;
  transform: translate(-50%, -50%);
  border-style: solid;
  border-width: 14px 0 14px 24px;
  border-color: transparent transparent transparent #fff;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(124,58,237,0.4); }
  50% { box-shadow: 0 0 0 16px rgba(124,58,237,0); }
}

/* ---- 专家卡片 ---- */
.experts-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.expert-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.expert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.expert-photo {
  aspect-ratio: 4/3;
  overflow: hidden;
}
.expert-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.expert-card:hover .expert-photo img { transform: scale(1.05); }
.expert-info { padding: 20px; }
.expert-info h3 {
  font-size: 17px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 4px;
}
.expert-role {
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 10px;
}
.expert-desc {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}
.expert-awards {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}
.award-tag {
  background: linear-gradient(135deg, rgba(245,158,11,0.1), rgba(236,72,153,0.1));
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 4px;
}
.expert-btns { display: flex; gap: 8px; }
.btn-sm {
  font-size: 12px;
  padding: 6px 14px;
  border-radius: 6px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-sm-primary { background: var(--gradient); color: #fff; }
.btn-sm-primary:hover { opacity: 0.9; color: #fff; }
.btn-sm-outline { border: 1.5px solid var(--border); color: var(--text); background: transparent; }
.btn-sm-outline:hover { border-color: var(--primary); color: var(--primary); }

/* ---- 合作伙伴 ---- */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.partner-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-light);
  transition: all var(--transition);
}
.partner-item:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: var(--shadow);
}

/* ---- 步骤卡片 ---- */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: step;
}
.step-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  position: relative;
  counter-increment: step;
}
.step-card::before {
  content: counter(step);
  position: absolute;
  top: -14px;
  left: 20px;
  width: 28px;
  height: 28px;
  background: var(--gradient);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 28px;
  text-align: center;
}
.step-card h3 {
  font-size: 15px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 10px;
}
.step-card p { font-size: 13px; color: var(--text-light); line-height: 1.7; }

/* ---- 评价卡片 ---- */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.review-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: all var(--transition);
}
.review-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.review-stars { color: var(--accent); font-size: 16px; margin-bottom: 12px; }
.review-text {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}
.review-user { display: flex; align-items: center; gap: 10px; }
.review-avatar {
  width: 36px;
  height: 36px;
  background: var(--gradient);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
  flex-shrink: 0;
}
.review-user-info .name { font-size: 13px; font-weight: 700; color: var(--dark); }
.review-user-info .date { font-size: 11px; color: var(--text-muted); }

/* ---- FAQ ---- */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--white);
}
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  color: var(--dark);
  transition: background var(--transition);
}
.faq-question:hover { background: var(--section-alt); }
.faq-question.active { color: var(--primary); }
.faq-icon {
  font-size: 20px;
  font-weight: 400;
  color: var(--primary);
  transition: transform var(--transition);
  flex-shrink: 0;
}
.faq-question.active .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer.open { max-height: 300px; }
.faq-answer p {
  padding: 0 20px 18px;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
}

/* ---- 联系我们 ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.contact-info h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 24px;
}
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
}
.contact-icon {
  font-size: 22px;
  flex-shrink: 0;
  margin-top: 2px;
}
.contact-item .label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 2px;
}
.contact-item .value {
  font-size: 14px;
  font-weight: 600;
  color: var(--dark);
}
.contact-item .value a { color: var(--primary); }
.qrcode-group {
  display: flex;
  gap: 20px;
}
.qrcode-item { text-align: center; }
.qrcode-item img {
  width: 100px;
  height: 100px;
  border-radius: 8px;
  border: 1px solid var(--border);
  margin-bottom: 6px;
}
.qrcode-item p { font-size: 12px; color: var(--text-muted); }
.community-links { display: flex; flex-direction: column; gap: 12px; }
.community-link {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--section-alt);
  border-radius: var(--radius);
  padding: 14px 16px;
  border: 1px solid var(--border);
}
.cl-icon { font-size: 22px; flex-shrink: 0; }
.cl-name { font-size: 14px; font-weight: 700; color: var(--dark); }
.cl-desc { font-size: 12px; color: var(--text-muted); }

/* ---- 分享栏 ---- */
.share-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}
.share-label { font-size: 14px; color: var(--text-light); font-weight: 600; }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 20px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
}
.share-wechat { background: #07c160; color: #fff; }
.share-weibo { background: #e6162d; color: #fff; }
.share-douyin { background: #000; color: #fff; }
.share-bilibili { background: #00a1d6; color: #fff; }
.share-btn:hover { transform: translateY(-2px); opacity: 0.9; }

/* ---- 底部 ---- */
.site-footer {
  background: var(--dark2);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo-text {
  font-size: 24px;
  font-weight: 900;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 13px;
  line-height: 1.8;
  margin-bottom: 16px;
}
.footer-qrcodes { display: flex; gap: 16px; margin-top: 16px; }
.footer-qr { text-align: center; }
.footer-qr img {
  width: 72px;
  height: 72px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 4px;
}
.footer-qr p { font-size: 11px; color: rgba(255,255,255,0.4); }
.footer-col h4 {
  font-size: 14px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  color: rgba(255,255,255,0.35);
}
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--accent); }

/* ---- 标签 ---- */
.tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 4px;
}
.tag-hot { background: rgba(239,68,68,0.1); color: #ef4444; }
.tag-new { background: rgba(16,185,129,0.1); color: #10b981; }
.tag-award { background: rgba(245,158,11,0.1); color: var(--accent); }

/* ---- 加载更多 ---- */
.load-more-wrap { text-align: center; margin-top: 36px; }
.btn-load-more {
  display: inline-block;
  padding: 12px 36px;
  background: var(--white);
  color: var(--primary);
  border: 2px solid var(--primary);
  border-radius: 30px;
  font-weight: 700;
  font-size: 14px;
  transition: all var(--transition);
}
.btn-load-more:hover {
  background: var(--gradient);
  color: #fff;
  border-color: transparent;
}

/* ---- 面包屑 ---- */
.breadcrumb {
  background: var(--section-alt);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb-list a { color: var(--primary); }
.breadcrumb-list .sep { color: var(--text-muted); }

/* ---- 页面Banner ---- */
.page-banner {
  background: var(--gradient);
  color: #fff;
  text-align: center;
  padding: 48px 20px;
}
.page-banner h1 {
  font-size: 36px;
  font-weight: 900;
  margin-bottom: 12px;
}
.page-banner p {
  font-size: 15px;
  opacity: 0.85;
  max-width: 560px;
  margin: 0 auto;
}

/* ---- 页面介绍 ---- */
.page-intro {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 40px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.page-intro h2 {
  font-size: 22px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 14px;
}
.page-intro p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.9;
}

/* ---- 淡入动画 ---- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .experts-grid { grid-template-columns: repeat(2, 1fr); }
  .partners-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .hamburger { display: flex; }
  .hero-content h1 { font-size: 32px; }
  .section-header h2 { font-size: 24px; }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .experts-grid { grid-template-columns: 1fr 1fr; }
  .howto-steps { grid-template-columns: 1fr 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-stats { gap: 20px; }
  .hero-stat .num { font-size: 22px; }
  .section { padding: 40px 0; }
  .page-banner h1 { font-size: 26px; }
  div[style*="grid-template-columns:1fr 1fr"] {
    grid-template-columns: 1fr !important;
  }
  div[style*="grid-template-columns:repeat(4,1fr)"] {
    grid-template-columns: repeat(2,1fr) !important;
  }
  div[style*="grid-template-columns:repeat(3,1fr)"] {
    grid-template-columns: repeat(2,1fr) !important;
  }
}

@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .experts-grid { grid-template-columns: 1fr; }
  .howto-steps { grid-template-columns: 1fr; }
  .partners-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-content h1 { font-size: 26px; }
  .hero-btns { flex-direction: column; }
  .header-inner { gap: 12px; }
}