/* =====================================================
   困困兔 - 汽车改装与视频社区
   原创CSS样式系统 | oaao9s.cn
   主色：#FF6B00（活力橙）/ #1A1A2E（深夜蓝）/ #E8E8E8（银灰）
   ===================================================== */

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  background: #0d0d1a;
  color: #e0e0e0;
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: #FF6B00; text-decoration: none; transition: color .25s; }
a:hover { color: #ffaa55; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; }

/* ---- CSS Variables ---- */
:root {
  --orange: #FF6B00;
  --orange-light: #FF8C33;
  --orange-dark: #CC5500;
  --navy: #1A1A2E;
  --navy-mid: #16213E;
  --navy-light: #0F3460;
  --silver: #C0C0C0;
  --silver-light: #E8E8E8;
  --white: #FFFFFF;
  --dark: #0d0d1a;
  --card-bg: #1e1e35;
  --border: rgba(255,107,0,0.25);
  --radius: 10px;
  --radius-lg: 18px;
  --shadow: 0 4px 24px rgba(0,0,0,0.45);
  --shadow-orange: 0 4px 20px rgba(255,107,0,0.35);
  --transition: .3s ease;
}

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--white);
}
h1 { font-size: clamp(1.8rem, 4vw, 3rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.1rem, 2.2vw, 1.6rem); }
h4 { font-size: 1.15rem; }
h5 { font-size: 1rem; }
h6 { font-size: .9rem; color: var(--silver); }

p { color: #b0b0c8; margin-bottom: .8rem; }

/* ---- Layout ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 72px 0; }
.section-alt { background: var(--navy-mid); }
.section-title {
  text-align: center;
  margin-bottom: 48px;
}
.section-title h2 {
  position: relative;
  display: inline-block;
  padding-bottom: 14px;
}
.section-title h2::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 60px; height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--orange-light));
  border-radius: 2px;
}
.section-title p { color: var(--silver); font-size: 1.05rem; margin-top: 10px; }

/* ---- Header / Navbar ---- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(13,13,26,.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,.6); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 20px;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.header-logo img.logo-img {
  width: 40px; height: 40px;
  border-radius: 8px;
  object-fit: cover;
}
.header-logo .brand-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: .5px;
}
.header-logo .brand-name span { color: var(--orange); }

/* Main Nav */
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  color: var(--silver-light);
  font-size: .93rem;
  padding: 6px 12px;
  border-radius: 6px;
  transition: all var(--transition);
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  color: var(--orange);
  background: rgba(255,107,0,.1);
}

/* Search Bar */
.header-search {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,.07);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 5px 14px;
  gap: 8px;
  min-width: 200px;
  max-width: 260px;
}
.header-search input {
  background: none;
  border: none;
  outline: none;
  color: var(--silver-light);
  font-size: .88rem;
  width: 100%;
}
.header-search input::placeholder { color: #666; }
.header-search button {
  color: var(--orange);
  font-size: 1rem;
  padding: 0;
  line-height: 1;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  cursor: pointer;
}
.menu-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--silver-light);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ---- Hero Section ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 64px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #0d0d1a 0%, #1A1A2E 50%, #0F3460 100%);
}
.hero-bg-img {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero-banner.jpg');
  background-size: cover;
  background-position: center;
  opacity: .35;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(13,13,26,.9) 40%, rgba(13,13,26,.3) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,107,0,.15);
  border: 1px solid rgba(255,107,0,.4);
  border-radius: 20px;
  padding: 5px 14px;
  font-size: .82rem;
  color: var(--orange);
  margin-bottom: 20px;
  letter-spacing: .5px;
  text-transform: uppercase;
}
.hero-eyebrow::before { content: '▶'; font-size: .7rem; }
.hero h1 { margin-bottom: 18px; }
.hero h1 em {
  font-style: normal;
  color: var(--orange);
  position: relative;
}
.hero-desc {
  font-size: 1.1rem;
  color: var(--silver);
  margin-bottom: 32px;
  max-width: 520px;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--orange), var(--orange-light));
  color: var(--white);
  padding: 13px 28px;
  border-radius: 8px;
  font-weight: 700;
  font-size: .95rem;
  box-shadow: var(--shadow-orange);
  transition: all var(--transition);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(255,107,0,.5);
  color: var(--white);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 2px solid var(--orange);
  color: var(--orange);
  padding: 11px 26px;
  border-radius: 8px;
  font-weight: 600;
  font-size: .95rem;
  transition: all var(--transition);
}
.btn-outline:hover {
  background: rgba(255,107,0,.1);
  transform: translateY(-2px);
  color: var(--orange);
}
.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat .num {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--orange);
  display: block;
}
.hero-stat .label { font-size: .8rem; color: var(--silver); }

/* ---- Search Bar Below Nav ---- */
.search-section {
  background: var(--navy-mid);
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}
.search-bar-wrap {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border);
  border-radius: 32px;
  padding: 8px 20px;
  gap: 12px;
  max-width: 680px;
  margin: 0 auto;
}
.search-bar-wrap input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--silver-light);
  font-size: 1rem;
}
.search-bar-wrap input::placeholder { color: #666; }
.search-bar-wrap .search-btn {
  background: var(--orange);
  color: var(--white);
  border: none;
  border-radius: 22px;
  padding: 7px 20px;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
}
.search-bar-wrap .search-btn:hover { background: var(--orange-light); }
.search-hot-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
  justify-content: center;
}
.search-hot-tags span { font-size: .8rem; color: #888; }
.search-hot-tags a {
  font-size: .8rem;
  color: var(--silver);
  background: rgba(255,255,255,.06);
  padding: 3px 10px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.1);
  transition: all var(--transition);
}
.search-hot-tags a:hover {
  background: rgba(255,107,0,.15);
  color: var(--orange);
  border-color: var(--orange);
}

/* ---- Video Cards ---- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 22px;
}
.video-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.07);
  transition: all var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-5px);
  border-color: var(--orange);
  box-shadow: var(--shadow-orange);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #111;
}
.video-thumb img,
.video-thumb video {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.video-card:hover .video-thumb img,
.video-card:hover .video-thumb video {
  transform: scale(1.06);
}
.play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.35);
  opacity: 0;
  transition: opacity var(--transition);
}
.video-card:hover .play-btn { opacity: 1; }
/* 移动端始终显示播放按钮 */
@media (hover: none) {
  .play-btn { opacity: 1; }
}
.play-btn-icon {
  width: 54px; height: 54px;
  background: rgba(255,107,0,.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(255,107,0,.5);
  transition: transform var(--transition);
}
.video-card:hover .play-btn-icon { transform: scale(1.1); }
.play-btn-icon::after {
  content: '';
  border-left: 18px solid #fff;
  border-top: 11px solid transparent;
  border-bottom: 11px solid transparent;
  margin-left: 4px;
}
.video-duration {
  position: absolute;
  bottom: 8px; right: 8px;
  background: rgba(0,0,0,.75);
  color: #fff;
  font-size: .75rem;
  padding: 2px 7px;
  border-radius: 4px;
}
.video-tag {
  position: absolute;
  top: 8px; left: 8px;
  background: var(--orange);
  color: #fff;
  font-size: .7rem;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}
.video-info { padding: 14px 16px; }
.video-info h4 {
  font-size: .95rem;
  margin-bottom: 8px;
  color: var(--white);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .78rem;
  color: #888;
}
.video-meta .views::before { content: '▶ '; }
.video-meta .likes::before { content: '♥ '; color: var(--orange); }

/* ---- Tab Navigation ---- */
.tab-nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.tab-btn {
  padding: 8px 20px;
  border-radius: 22px;
  font-size: .88rem;
  font-weight: 600;
  color: var(--silver);
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  cursor: pointer;
  transition: all var(--transition);
}
.tab-btn.active, .tab-btn:hover {
  background: var(--orange);
  color: var(--white);
  border-color: var(--orange);
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ---- Service Cards ---- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.service-card {
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--orange-light));
  transform: scaleX(0);
  transition: transform var(--transition);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--orange);
  box-shadow: var(--shadow-orange);
}
.service-icon {
  width: 60px; height: 60px;
  background: rgba(255,107,0,.12);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.8rem;
  transition: background var(--transition);
}
.service-card:hover .service-icon { background: rgba(255,107,0,.25); }
.service-card h4 { margin-bottom: 8px; }
.service-card p { font-size: .88rem; color: #999; margin: 0; }

/* ---- AI Features ---- */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.ai-card {
  background: linear-gradient(135deg, var(--navy-mid), var(--navy-light));
  border: 1px solid rgba(255,107,0,.2);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}
.ai-card::after {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 120px; height: 120px;
  background: radial-gradient(circle, rgba(255,107,0,.15), transparent 70%);
  border-radius: 50%;
}
.ai-card:hover {
  transform: translateY(-4px);
  border-color: var(--orange);
  box-shadow: var(--shadow-orange);
}
.ai-card .ai-num {
  font-size: 3rem;
  font-weight: 900;
  color: rgba(255,107,0,.15);
  line-height: 1;
  margin-bottom: 12px;
}
.ai-card h3 { margin-bottom: 10px; }
.ai-card p { font-size: .9rem; color: #aaa; }
.ai-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 14px; }
.ai-tag {
  background: rgba(255,107,0,.15);
  color: var(--orange);
  font-size: .75rem;
  padding: 3px 10px;
  border-radius: 12px;
  border: 1px solid rgba(255,107,0,.3);
}

/* ---- Community Section ---- */
.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.community-card {
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius);
  padding: 22px 16px;
  text-align: center;
  transition: all var(--transition);
  cursor: pointer;
}
.community-card:hover {
  border-color: var(--orange);
  background: rgba(255,107,0,.08);
  transform: translateY(-3px);
}
.community-card .comm-icon { font-size: 2.2rem; margin-bottom: 10px; }
.community-card h5 { color: var(--white); margin-bottom: 6px; }
.community-card p { font-size: .8rem; color: #888; margin: 0; }
.community-card .comm-count {
  display: inline-block;
  margin-top: 8px;
  font-size: .75rem;
  color: var(--orange);
  background: rgba(255,107,0,.1);
  padding: 2px 8px;
  border-radius: 10px;
}

/* ---- Expert Team ---- */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}
.expert-card:hover {
  transform: translateY(-5px);
  border-color: var(--orange);
  box-shadow: var(--shadow-orange);
}
.expert-photo {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
}
.expert-photo img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.expert-card:hover .expert-photo img { transform: scale(1.05); }
.expert-badge {
  position: absolute;
  bottom: 10px; left: 10px;
  background: var(--orange);
  color: #fff;
  font-size: .72rem;
  padding: 3px 10px;
  border-radius: 12px;
  font-weight: 600;
}
.expert-info { padding: 18px 18px 20px; }
.expert-info h4 { margin-bottom: 4px; }
.expert-info .role { font-size: .82rem; color: var(--orange); margin-bottom: 10px; }
.expert-info p { font-size: .84rem; color: #999; margin-bottom: 12px; }
.expert-awards { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 14px; }
.expert-awards span {
  font-size: .72rem;
  background: rgba(255,107,0,.1);
  color: var(--orange);
  padding: 2px 8px;
  border-radius: 8px;
  border: 1px solid rgba(255,107,0,.25);
}
.expert-actions { display: flex; gap: 8px; }
.expert-actions a {
  flex: 1;
  text-align: center;
  padding: 7px 0;
  border-radius: 6px;
  font-size: .82rem;
  font-weight: 600;
  transition: all var(--transition);
}
.expert-actions .btn-contact {
  background: var(--orange);
  color: #fff;
}
.expert-actions .btn-contact:hover { background: var(--orange-light); }
.expert-actions .btn-works {
  border: 1px solid var(--orange);
  color: var(--orange);
}
.expert-actions .btn-works:hover {
  background: rgba(255,107,0,.1);
}

/* ---- Partners ---- */
.partners-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}
.partner-item {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 8px;
  padding: 12px 22px;
  font-size: .9rem;
  color: var(--silver);
  font-weight: 600;
  transition: all var(--transition);
  letter-spacing: .5px;
}
.partner-item:hover {
  background: rgba(255,107,0,.1);
  border-color: var(--orange);
  color: var(--orange);
}

/* ---- How To Join ---- */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
  counter-reset: step;
}
.howto-step {
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  position: relative;
  transition: all var(--transition);
}
.howto-step:hover {
  border-color: var(--orange);
  transform: translateY(-4px);
}
.step-num {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--orange), var(--orange-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.howto-step h4 { margin-bottom: 8px; }
.howto-step p { font-size: .86rem; color: #999; margin: 0; }

/* ---- Reviews ---- */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
  transition: all var(--transition);
}
.review-card:hover {
  border-color: var(--orange);
  transform: translateY(-3px);
}
.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.review-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--orange), var(--navy-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.review-user h6 { color: var(--white); font-size: .9rem; margin-bottom: 2px; }
.review-user .user-tag { font-size: .75rem; color: var(--orange); }
.review-stars { color: #FFB800; font-size: .85rem; margin-bottom: 10px; }
.review-text { font-size: .88rem; color: #aaa; line-height: 1.6; }
.review-date { font-size: .75rem; color: #666; margin-top: 10px; }

/* ---- FAQ ---- */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: var(--orange); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  cursor: pointer;
  font-weight: 600;
  color: var(--white);
  font-size: .95rem;
}
.faq-question .faq-icon {
  width: 24px; height: 24px;
  background: rgba(255,107,0,.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  font-size: .8rem;
  flex-shrink: 0;
  transition: transform var(--transition);
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--orange); color: #fff; }
.faq-answer {
  display: none;
  padding: 0 20px 18px;
  font-size: .9rem;
  color: #aaa;
  line-height: 1.7;
}
.faq-item.open .faq-answer { display: block; }

/* ---- Contact Section ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}
.contact-info-block {
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.contact-info-block h3 { margin-bottom: 20px; }
.contact-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,.05);
}
.contact-row:last-child { border-bottom: none; }
.contact-row .c-icon {
  width: 36px; height: 36px;
  background: rgba(255,107,0,.12);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.contact-row .c-label { font-size: .78rem; color: #888; margin-bottom: 2px; }
.contact-row .c-val { font-size: .9rem; color: var(--white); }
.qr-block {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.qr-item {
  text-align: center;
  flex: 1;
  min-width: 120px;
}
.qr-item img {
  width: 100px; height: 100px;
  border-radius: 8px;
  margin: 0 auto 8px;
  border: 2px solid var(--border);
}
.qr-item p { font-size: .78rem; color: #888; margin: 0; }

/* ---- Share Buttons ---- */
.share-section { text-align: center; padding: 40px 0; }
.share-btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 20px;
  border-radius: 22px;
  font-size: .88rem;
  font-weight: 600;
  border: 1px solid;
  transition: all var(--transition);
}
.share-wechat { color: #07C160; border-color: #07C160; }
.share-wechat:hover { background: rgba(7,193,96,.1); }
.share-weibo { color: #E6162D; border-color: #E6162D; }
.share-weibo:hover { background: rgba(230,22,45,.1); }
.share-bili { color: #00A1D6; border-color: #00A1D6; }
.share-bili:hover { background: rgba(0,161,214,.1); }
.share-douyin { color: #FE2C55; border-color: #FE2C55; }
.share-douyin:hover { background: rgba(254,44,85,.1); }
.share-qq { color: #12B7F5; border-color: #12B7F5; }
.share-qq:hover { background: rgba(18,183,245,.1); }

/* ---- Footer ---- */
.site-footer {
  background: var(--navy);
  border-top: 1px solid var(--border);
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 40px;
}
.footer-brand .brand-name {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-brand .brand-name img {
  width: 32px; height: 32px;
  border-radius: 6px;
}
.footer-brand p { font-size: .88rem; color: #888; line-height: 1.7; }
.footer-col h5 {
  color: var(--white);
  margin-bottom: 16px;
  font-size: .95rem;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255,107,0,.3);
}
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
  font-size: .86rem;
  color: #888;
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--orange); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.06);
  padding: 18px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom p { font-size: .82rem; color: #666; margin: 0; }
.footer-bottom .update-time { color: var(--orange); font-size: .8rem; }
.footer-links { display: flex; gap: 16px; }
.footer-links a { font-size: .8rem; color: #666; }
.footer-links a:hover { color: var(--orange); }

/* ---- Inner Page Hero ---- */
.inner-hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  padding: 100px 0 48px;
  border-bottom: 1px solid var(--border);
}
.inner-hero h1 { margin-bottom: 10px; }
.inner-hero p { color: var(--silver); }
.breadcrumb-wrap {
  margin-bottom: 16px;
}
.breadcrumb-wrap ol {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.breadcrumb-wrap ol li { font-size: .82rem; color: #888; }
.breadcrumb-wrap ol li a { color: var(--orange); }
.breadcrumb-wrap ol li + li::before { content: ' › '; color: #555; }

/* ---- Utility ---- */
.text-orange { color: var(--orange); }
.text-center { text-align: center; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.tag-list { display: flex; gap: 6px; flex-wrap: wrap; }
.tag {
  font-size: .75rem;
  background: rgba(255,255,255,.06);
  color: var(--silver);
  padding: 3px 10px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,.1);
}
.tag.orange { background: rgba(255,107,0,.12); color: var(--orange); border-color: rgba(255,107,0,.3); }

/* ---- Entertainment Section ---- */
.ent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.ent-card {
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}
.ent-card:hover {
  transform: translateY(-4px);
  border-color: var(--orange);
  box-shadow: var(--shadow-orange);
}
.ent-thumb {
  position: relative;
  aspect-ratio: 9/16;
  overflow: hidden;
  background: #111;
}
.ent-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.ent-card:hover .ent-thumb img { transform: scale(1.06); }
.ent-info { padding: 14px 16px; }
.ent-info h5 { margin-bottom: 6px; }
.ent-info p { font-size: .82rem; color: #888; margin: 0; }

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

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .ent-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
}

@media (max-width: 768px) {
  .header-inner { flex-wrap: wrap; height: auto; padding: 10px 0; gap: 10px; }
  .main-nav {
    display: none;
    flex-direction: column;
    width: 100%;
    background: var(--navy);
    padding: 12px 0;
    border-top: 1px solid var(--border);
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 10px 16px; }
  .menu-toggle { display: flex; }
  .header-search { display: none; }
  .hero { min-height: 80vh; }
  .hero-stats { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
  .expert-grid { grid-template-columns: 1fr 1fr; }
  .howto-steps { grid-template-columns: 1fr 1fr; }
  .ent-grid { grid-template-columns: repeat(2, 1fr); }
  .play-btn { opacity: 1; }
}

@media (max-width: 480px) {
  .section { padding: 48px 0; }
  .hero h1 { font-size: 1.6rem; }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
  .expert-grid { grid-template-columns: 1fr; }
  .howto-steps { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .ent-grid { grid-template-columns: 1fr; }
  .share-btns { flex-direction: column; align-items: center; }
  .qr-block { justify-content: center; }
}