/* ========================================
   每日大赛 MRDS - 主样式文件
   Brand: 每日大赛 | Domain: pyyrlrk.cn
   ======================================== */

/* ---- CSS Variables ---- */
:root {
  --primary: #0d1b2a;
  --secondary: #1b2a3b;
  --accent: #c9a84c;
  --accent2: #e63946;
  --text: #f0f0f0;
  --text-muted: #a0a8b0;
  --card-bg: #162030;
  --border: #2a3a4a;
  --gradient: linear-gradient(135deg, #0d1b2a 0%, #1b3a5c 100%);
  --gold-gradient: linear-gradient(135deg, #c9a84c 0%, #f5d98b 50%, #c9a84c 100%);
  --red-gradient: linear-gradient(135deg, #e63946 0%, #ff6b6b 100%);
  --font-main: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --radius: 12px;
  --shadow: 0 4px 20px rgba(0,0,0,0.4);
  --transition: all 0.3s ease;
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-main);
  background: var(--primary);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: #f5d98b; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
h1,h2,h3,h4,h5,h6 { font-weight: 700; line-height: 1.3; }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--primary); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* ---- Top Bar ---- */
.top-bar {
  background: var(--accent2);
  color: #fff;
  text-align: center;
  padding: 6px 20px;
  font-size: 13px;
  letter-spacing: 0.5px;
}
.top-bar a { color: #fff; font-weight: 600; }

/* ---- Header ---- */
.site-header {
  background: rgba(13,27,42,0.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 0 20px;
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: 20px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.site-logo img.logo-img {
  height: 44px;
  width: auto;
  border-radius: 6px;
}
.site-logo .logo-text {
  display: flex;
  flex-direction: column;
}
.site-logo .logo-name {
  font-size: 20px;
  font-weight: 800;
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
}
.site-logo .logo-sub {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 2px;
}

/* ---- Navigation ---- */
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  color: var(--text);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  background: rgba(201,168,76,0.15);
  color: var(--accent);
}
.nav-toggle {
  display: none;
  background: none;
  border: 2px solid var(--accent);
  color: var(--accent);
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 18px;
}

/* ---- Search Bar ---- */
.search-bar-wrap {
  background: var(--secondary);
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
}
.search-bar-inner form {
  display: flex;
  flex: 1;
  max-width: 600px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 30px;
  overflow: hidden;
  transition: var(--transition);
}
.search-bar-inner form:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(201,168,76,0.15);
}
.search-bar-inner input {
  flex: 1;
  background: none;
  border: none;
  color: var(--text);
  padding: 10px 20px;
  font-size: 14px;
  outline: none;
  font-family: var(--font-main);
}
.search-bar-inner input::placeholder { color: var(--text-muted); }
.search-bar-inner button {
  background: var(--accent);
  border: none;
  color: var(--primary);
  padding: 10px 22px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  font-family: var(--font-main);
  transition: var(--transition);
}
.search-bar-inner button:hover { background: #f5d98b; }
.search-hot-tags { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.search-hot-tags span { font-size: 12px; color: var(--text-muted); }
.search-hot-tags a {
  font-size: 12px;
  color: var(--text-muted);
  background: rgba(255,255,255,0.05);
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
}
.search-hot-tags a:hover { color: var(--accent); border-color: var(--accent); }

/* ---- Breadcrumb ---- */
.breadcrumb {
  background: var(--secondary);
  padding: 10px 20px;
  font-size: 13px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
.breadcrumb-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 6px;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--accent); }

/* ---- Hero / Banner ---- */
.hero {
  position: relative;
  height: 560px;
  overflow: hidden;
  background: var(--primary);
}
.hero-slider { width: 100%; height: 100%; position: relative; }
.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s ease;
}
.hero-slide.active { opacity: 1; }
.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(13,27,42,0.9) 0%, rgba(13,27,42,0.4) 60%, transparent 100%);
}
.hero-content {
  position: absolute;
  left: 8%;
  top: 50%;
  transform: translateY(-50%);
  max-width: 540px;
  z-index: 10;
}
.hero-tag {
  display: inline-block;
  background: var(--accent2);
  color: #fff;
  font-size: 12px;
  padding: 4px 14px;
  border-radius: 20px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.hero-content h1 {
  font-size: 42px;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
  color: #fff;
}
.hero-content h1 span { color: var(--accent); }
.hero-content p {
  font-size: 16px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 28px;
  line-height: 1.8;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  background: var(--accent2);
  color: #fff;
  padding: 13px 30px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 15px;
  transition: var(--transition);
  border: 2px solid var(--accent2);
}
.btn-primary:hover { background: transparent; color: var(--accent2); }
.btn-outline {
  background: transparent;
  color: var(--accent);
  padding: 13px 30px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 15px;
  border: 2px solid var(--accent);
  transition: var(--transition);
}
.btn-outline:hover { background: var(--accent); color: var(--primary); }
.hero-dots {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
}
.hero-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: var(--transition);
}
.hero-dot.active { background: var(--accent); width: 24px; border-radius: 4px; }

/* ---- Stats Bar ---- */
.stats-bar {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 20px;
}
.stats-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.stat-item { text-align: center; }
.stat-num {
  font-size: 28px;
  font-weight: 900;
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* ---- Section Styles ---- */
.section { padding: 70px 20px; }
.section-alt { background: var(--secondary); }
.container { max-width: 1280px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-tag {
  display: inline-block;
  background: rgba(201,168,76,0.15);
  color: var(--accent);
  font-size: 12px;
  padding: 4px 16px;
  border-radius: 20px;
  border: 1px solid rgba(201,168,76,0.3);
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 12px;
}
.section-title {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.section-title span { color: var(--accent); }
.section-desc { color: var(--text-muted); font-size: 15px; max-width: 560px; margin: 0 auto; }

/* ---- Video Cards ---- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.video-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #0a1520;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.05); }
.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: var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-icon {
  width: 56px;
  height: 56px;
  background: rgba(230,57,70,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
  border: 2px solid rgba(255,255,255,0.3);
}
.play-icon::after {
  content: '';
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 4px;
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.8);
  color: #fff;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}
.video-quality {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--accent2);
  color: #fff;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 700;
}
.video-info { padding: 16px; }
.video-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.video-meta span { display: flex; align-items: center; gap: 4px; }
.video-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.video-tag {
  font-size: 11px;
  color: var(--accent);
  background: rgba(201,168,76,0.1);
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid rgba(201,168,76,0.2);
}

/* ---- Category Tabs ---- */
.cat-tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.cat-tab {
  padding: 8px 20px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: transparent;
  transition: var(--transition);
  font-family: var(--font-main);
}
.cat-tab:hover, .cat-tab.active {
  background: var(--accent);
  color: var(--primary);
  border-color: var(--accent);
}

/* ---- Expert Cards ---- */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  text-align: center;
  transition: var(--transition);
}
.expert-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
}
.expert-avatar {
  width: 100%;
  aspect-ratio: 3/4;
  overflow: hidden;
}
.expert-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.expert-card:hover .expert-avatar img { transform: scale(1.05); }
.expert-info { padding: 20px; }
.expert-name { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.expert-title {
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 10px;
  font-weight: 600;
}
.expert-desc { font-size: 13px; color: var(--text-muted); margin-bottom: 14px; line-height: 1.6; }
.expert-awards { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; margin-bottom: 14px; }
.award-badge {
  font-size: 11px;
  background: rgba(201,168,76,0.15);
  color: var(--accent);
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid rgba(201,168,76,0.3);
}
.expert-btns { display: flex; gap: 8px; justify-content: center; }
.btn-sm {
  padding: 7px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid var(--accent);
  color: var(--accent);
  background: transparent;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-main);
}
.btn-sm:hover { background: var(--accent); color: var(--primary); }
.btn-sm.filled { background: var(--accent); color: var(--primary); }
.btn-sm.filled:hover { background: transparent; color: var(--accent); }

/* ---- Partner Logo Wall ---- */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}
.partner-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  transition: var(--transition);
}
.partner-item:hover { border-color: var(--accent); }
.partner-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-muted);
  transition: var(--transition);
}
.partner-item:hover .partner-name { color: var(--accent); }
.partner-type { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

/* ---- FAQ ---- */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { border-color: var(--accent); }
.faq-question {
  padding: 18px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  user-select: none;
}
.faq-question::after {
  content: '+';
  font-size: 22px;
  color: var(--accent);
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-question::after { content: '−'; }
.faq-answer {
  display: none;
  padding: 0 24px 18px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}
.faq-item.open .faq-answer { display: block; }

/* ---- Reviews ---- */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.review-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}
.review-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.review-stars { color: var(--accent); font-size: 16px; margin-bottom: 12px; letter-spacing: 2px; }
.review-text { font-size: 14px; color: var(--text-muted); line-height: 1.8; margin-bottom: 16px; }
.review-author { display: flex; align-items: center; gap: 12px; }
.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
  border: 2px solid var(--accent);
  flex-shrink: 0;
}
.review-name { font-size: 14px; font-weight: 600; color: #fff; }
.review-date { font-size: 12px; color: var(--text-muted); }

/* ---- Contact Section ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info h3 { font-size: 22px; color: #fff; margin-bottom: 20px; }
.contact-item {
  display: flex;
  gap: 14px;
  margin-bottom: 18px;
  align-items: flex-start;
}
.contact-icon {
  width: 42px;
  height: 42px;
  background: rgba(201,168,76,0.15);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
  border: 1px solid rgba(201,168,76,0.3);
}
.contact-detail .label { font-size: 12px; color: var(--text-muted); margin-bottom: 2px; }
.contact-detail .value { font-size: 14px; color: #fff; font-weight: 500; }
.qr-codes { display: flex; gap: 24px; flex-wrap: wrap; }
.qr-item { text-align: center; }
.qr-item img {
  width: 120px;
  height: 120px;
  object-fit: contain;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  padding: 6px;
}
.qr-item p { font-size: 12px; color: var(--text-muted); margin-top: 8px; }
.community-links { display: flex; flex-direction: column; gap: 12px; }
.community-link-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  transition: var(--transition);
}
.community-link-item:hover { border-color: var(--accent); }
.community-link-icon { font-size: 24px; }
.community-link-info .name { font-size: 14px; font-weight: 600; color: #fff; }
.community-link-info .desc { font-size: 12px; color: var(--text-muted); }

/* ---- How-To Guide ---- */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}
.step-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  position: relative;
  transition: var(--transition);
}
.step-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.step-num {
  width: 48px;
  height: 48px;
  background: var(--accent2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 900;
  color: #fff;
  margin: 0 auto 16px;
}
.step-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.step-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* ---- Share Buttons ---- */
.share-bar {
  background: var(--secondary);
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.share-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.share-label { font-size: 13px; color: var(--text-muted); font-weight: 600; }
.share-btn {
  padding: 7px 18px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  font-family: var(--font-main);
}
.share-wechat { background: #07c160; color: #fff; }
.share-weibo { background: #e6162d; color: #fff; }
.share-douyin { background: #010101; color: #fff; border: 1px solid #333; }
.share-bilibili { background: #00a1d6; color: #fff; }
.share-btn:hover { opacity: 0.85; transform: scale(1.05); }

/* ---- Footer ---- */
.site-footer {
  background: #080f18;
  border-top: 1px solid var(--border);
  padding: 60px 20px 0;
}
.footer-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border);
}
.footer-brand .logo-name {
  font-size: 24px;
  font-weight: 800;
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}
.footer-brand p { font-size: 13px; color: var(--text-muted); line-height: 1.8; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.social-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-muted);
  transition: var(--transition);
  cursor: pointer;
}
.social-btn:hover { background: var(--accent); color: var(--primary); border-color: var(--accent); }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 13px; color: var(--text-muted); transition: var(--transition); }
.footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent); }

/* ---- Inner Page ---- */
.page-hero {
  background: var(--gradient);
  padding: 60px 20px;
  text-align: center;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../images/about-bg.jpg') center/cover no-repeat;
  opacity: 0.15;
}
.page-hero-content { position: relative; z-index: 1; }
.page-hero h1 { font-size: 36px; color: #fff; margin-bottom: 12px; }
.page-hero h1 span { color: var(--accent); }
.page-hero p { font-size: 15px; color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto; }
.page-content { max-width: 1280px; margin: 0 auto; padding: 60px 20px; }
.page-intro {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 48px;
  border-left: 4px solid var(--accent);
}
.page-intro p { font-size: 15px; color: var(--text-muted); line-height: 1.9; }

/* ---- AI Tools Section ---- */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.ai-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.ai-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gold-gradient);
}
.ai-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow); }
.ai-icon { font-size: 36px; margin-bottom: 16px; }
.ai-title { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.ai-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.ai-features { display: flex; flex-direction: column; gap: 6px; }
.ai-feature {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.ai-feature::before { content: '✓'; color: var(--accent); font-weight: 700; }

/* ---- Live Section ---- */
.live-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.live-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}
.live-card:hover { border-color: var(--accent2); transform: translateY(-4px); }
.live-thumb {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
}
.live-thumb img { width: 100%; height: 100%; object-fit: cover; }
.live-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--accent2);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  animation: pulse 1.5s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}
.live-viewers {
  position: absolute;
  bottom: 10px;
  left: 10px;
  background: rgba(0,0,0,0.7);
  color: #fff;
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 4px;
}
.live-info { padding: 14px; }
.live-name { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 4px; }
.live-category { font-size: 12px; color: var(--accent); }

/* ---- Danmaku ---- */
.danmaku-demo {
  background: #000;
  border-radius: var(--radius);
  height: 200px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  margin-bottom: 24px;
}
.danmaku-text {
  position: absolute;
  white-space: nowrap;
  font-size: 14px;
  font-weight: 600;
  animation: danmaku-move linear infinite;
  top: var(--top);
  color: var(--color);
}
@keyframes danmaku-move {
  from { left: 100%; }
  to { left: -100%; }
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .main-nav { display: none; position: absolute; top: 70px; left: 0; right: 0; background: var(--primary); flex-direction: column; padding: 16px; border-bottom: 1px solid var(--border); gap: 4px; }
  .main-nav.open { display: flex; }
  .nav-toggle { display: block; }
  .hero { height: 420px; }
  .hero-content h1 { font-size: 28px; }
  .hero-content { left: 5%; max-width: 90%; }
  .section-title { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .howto-steps { grid-template-columns: 1fr 1fr; }
  .page-hero h1 { font-size: 26px; }
}
@media (max-width: 480px) {
  .hero { height: 360px; }
  .hero-content h1 { font-size: 22px; }
  .hero-btns { flex-direction: column; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .howto-steps { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr 1fr; }
  .search-hot-tags { display: none; }
}

/* ---- Utility ---- */
.text-center { text-align: center; }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.mb-4 { margin-bottom: 16px; }
.mb-8 { margin-bottom: 32px; }
.flex { display: flex; }
.items-center { align-items: center; }
.gap-4 { gap: 16px; }
.hidden { display: none; }
.show-more-btn {
  display: block;
  margin: 32px auto 0;
  padding: 12px 40px;
  background: transparent;
  border: 2px solid var(--accent);
  color: var(--accent);
  border-radius: 30px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-main);
}
.show-more-btn:hover { background: var(--accent); color: var(--primary); }

/* ---- Loading Animation ---- */
.lazy-load { opacity: 0; transform: translateY(20px); transition: opacity 0.5s ease, transform 0.5s ease; }
.lazy-load.loaded { opacity: 1; transform: translateY(0); }

/* ---- Video Modal ---- */
.video-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}
.video-modal.open { display: flex; }
.modal-inner {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 800px;
  width: 90%;
  border: 1px solid var(--border);
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.modal-title { font-size: 16px; font-weight: 600; color: #fff; }
.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-main);
}
.modal-close:hover { color: var(--accent2); }
.modal-video { aspect-ratio: 16/9; background: #000; }
.modal-video video { width: 100%; height: 100%; }
.modal-placeholder {
  aspect-ratio: 16/9;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
}
.modal-placeholder .big-play {
  width: 80px;
  height: 80px;
  background: var(--accent2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-placeholder .big-play::after {
  content: '';
  border-style: solid;
  border-width: 14px 0 14px 24px;
  border-color: transparent transparent transparent #fff;
  margin-left: 6px;
}
.modal-placeholder p { color: var(--text-muted); font-size: 14px; }

/* ---- Notice Bar ---- */
.notice-bar {
  background: rgba(201,168,76,0.1);
  border: 1px solid rgba(201,168,76,0.3);
  border-radius: 8px;
  padding: 12px 20px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--accent);
}