/* =====================================================
   糖心vlog - 原创主题样式
   配色：玫瑰红 #E8336D | 糖果粉 #FF7BAC | 深酒红黑 #1A0A12
   ===================================================== */

/* ---- 重置与基础 ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary:    #E8336D;
  --primary-lt: #FF7BAC;
  --primary-dk: #B5194A;
  --accent:     #FFD700;
  --bg-dark:    #1A0A12;
  --bg-card:    #2D1020;
  --bg-card2:   #3A1530;
  --text-main:  #FFFFFF;
  --text-sub:   #C8A0B0;
  --text-muted: #8A6070;
  --border:     rgba(232,51,109,0.25);
  --grad-main:  linear-gradient(135deg, #E8336D 0%, #FF7BAC 50%, #FFB347 100%);
  --grad-card:  linear-gradient(160deg, #2D1020 0%, #3A1530 100%);
  --shadow-glow: 0 0 20px rgba(232,51,109,0.35);
  --radius-sm:  8px;
  --radius-md:  14px;
  --radius-lg:  22px;
  --transition: 0.28s cubic-bezier(.4,0,.2,1);
}

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

body {
  font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: var(--primary-lt); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }

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

ul, ol { list-style: none; }

/* ---- 滚动条 ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* ===================== HEADER ===================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(26,10,18,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  height: 68px;
  gap: 24px;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.site-logo img.logo-img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: cover;
}

.logo-text-wrap { display: flex; flex-direction: column; line-height: 1.2; }
.logo-brand { font-size: 1.15rem; font-weight: 700; background: var(--grad-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.logo-tagline { font-size: 0.68rem; color: var(--text-sub); }

/* 主导航 */
.site-nav { display: flex; align-items: center; gap: 4px; flex: 1; }

.site-nav a {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  color: var(--text-sub);
  transition: all var(--transition);
  white-space: nowrap;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--text-main);
  background: rgba(232,51,109,0.18);
}

/* 搜索框 */
.header-search {
  position: relative;
  flex-shrink: 0;
}

.search-input-wrap {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 6px 16px;
  gap: 8px;
  transition: border-color var(--transition);
  width: 220px;
}

.search-input-wrap:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(232,51,109,0.15); }

.search-input-wrap input {
  background: none;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 0.88rem;
  width: 100%;
}

.search-input-wrap input::placeholder { color: var(--text-muted); }

.search-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-sub);
  font-size: 1rem;
  padding: 0;
  transition: color var(--transition);
}

.search-btn:hover { color: var(--primary); }

.search-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  width: 280px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  z-index: 200;
}

.search-dropdown.open { display: block; }

.search-hot { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 8px; }
.search-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.search-tag {
  padding: 4px 10px;
  background: rgba(232,51,109,0.12);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.78rem;
  color: var(--primary-lt);
  cursor: pointer;
  transition: all var(--transition);
}
.search-tag:hover { background: var(--primary); color: #fff; }

/* 汉堡菜单 */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: all var(--transition);
}

/* 公告栏 */
.notice-bar {
  background: linear-gradient(90deg, var(--primary-dk), var(--primary), var(--primary-lt));
  text-align: center;
  padding: 8px 16px;
  font-size: 0.82rem;
  color: #fff;
  overflow: hidden;
}

.notice-inner {
  display: inline-block;
  animation: marquee 28s linear infinite;
  white-space: nowrap;
}

@keyframes marquee {
  0% { transform: translateX(60vw); }
  100% { transform: translateX(-100%); }
}

/* ===================== HERO ===================== */
.hero-section {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/hero_banner.jpg');
  background-size: cover;
  background-position: center;
  filter: brightness(0.45);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,10,18,0.85) 0%, rgba(232,51,109,0.25) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 80px 24px;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(232,51,109,0.2);
  border: 1px solid rgba(232,51,109,0.4);
  border-radius: 20px;
  padding: 5px 14px;
  font-size: 0.8rem;
  color: var(--primary-lt);
  margin-bottom: 20px;
}

.hero-badge::before { content: '●'; color: var(--primary); animation: blink 1.5s infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.3} }

.hero-h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--text-sub);
  max-width: 560px;
  margin-bottom: 32px;
}

.hero-stats {
  display: flex;
  gap: 32px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.hero-stat-item { text-align: center; }
.hero-stat-num {
  font-size: 1.8rem;
  font-weight: 700;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-stat-label { font-size: 0.78rem; color: var(--text-sub); }

.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  background: var(--grad-main);
  color: #fff;
  border-radius: 30px;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(232,51,109,0.45);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(232,51,109,0.6);
  color: #fff;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: transparent;
  color: var(--text-main);
  border: 1.5px solid rgba(255,255,255,0.3);
  border-radius: 30px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary-lt);
  background: rgba(232,51,109,0.1);
}

/* ===================== SECTIONS ===================== */
.section { padding: 72px 24px; }
.section-inner { max-width: 1280px; margin: 0 auto; }

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

.section-label {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(232,51,109,0.15);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.78rem;
  color: var(--primary-lt);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
}

.section-title span {
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc { color: var(--text-sub); font-size: 0.95rem; max-width: 560px; margin: 0 auto; }

/* ===================== VIDEO CARDS ===================== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.video-card {
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition);
  cursor: pointer;
}

.video-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.video-thumb {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.video-card:hover .video-thumb img { transform: scale(1.06); }

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

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

.play-btn-circle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--grad-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: #fff;
  box-shadow: 0 4px 20px rgba(232,51,109,0.6);
  transform: scale(0.8);
  transition: transform var(--transition);
}

.video-card:hover .play-btn-circle { transform: scale(1); }

.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.7);
  color: #fff;
  font-size: 0.72rem;
  padding: 2px 7px;
  border-radius: 4px;
}

.video-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.video-info { padding: 14px; }

.video-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.video-meta span { display: flex; align-items: center; gap: 3px; }

/* ===================== 影视传媒专区 ===================== */
.media-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.media-card {
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.media-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--grad-main);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.media-card:hover::before { transform: scaleX(1); }
.media-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-glow); border-color: var(--primary); }

.media-icon {
  font-size: 2.4rem;
  margin-bottom: 14px;
  display: block;
}

.media-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
}

.media-card p { font-size: 0.82rem; color: var(--text-sub); line-height: 1.6; }

/* ===================== 专家团队 ===================== */
.experts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}

.expert-card {
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
  transition: all var(--transition);
}

.expert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-glow); border-color: var(--primary); }

.expert-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 14px;
  border: 3px solid var(--primary);
}

.expert-name { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.expert-role { font-size: 0.78rem; color: var(--primary-lt); margin-bottom: 10px; }
.expert-desc { font-size: 0.8rem; color: var(--text-sub); margin-bottom: 14px; line-height: 1.6; }

.expert-awards { display: flex; flex-wrap: wrap; gap: 4px; justify-content: center; margin-bottom: 14px; }
.award-tag {
  font-size: 0.68rem;
  padding: 2px 8px;
  background: rgba(255,215,0,0.12);
  border: 1px solid rgba(255,215,0,0.3);
  border-radius: 10px;
  color: var(--accent);
}

.expert-btns { display: flex; gap: 8px; justify-content: center; }
.btn-sm {
  padding: 6px 14px;
  font-size: 0.75rem;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: rgba(232,51,109,0.1);
  color: var(--primary-lt);
  cursor: pointer;
  transition: all var(--transition);
}
.btn-sm:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===================== 社区功能 ===================== */
.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.community-card {
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: all var(--transition);
}

.community-card:hover { transform: translateY(-3px); border-color: var(--primary); box-shadow: var(--shadow-glow); }

.community-icon { font-size: 2rem; margin-bottom: 10px; }
.community-card h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 6px; }
.community-card p { font-size: 0.8rem; color: var(--text-sub); }

/* ===================== 合作品牌 ===================== */
.partners-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}

.partner-logo {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 24px;
  font-size: 0.85rem;
  color: var(--text-sub);
  font-weight: 600;
  transition: all var(--transition);
  min-width: 120px;
  text-align: center;
}

.partner-logo:hover { border-color: var(--primary); color: var(--primary-lt); background: rgba(232,51,109,0.08); }

/* ===================== 用户评价 ===================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.review-card {
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px;
  transition: all var(--transition);
}

.review-card:hover { border-color: var(--primary); box-shadow: var(--shadow-glow); }

.review-stars { color: var(--accent); font-size: 0.9rem; margin-bottom: 10px; }
.review-text { font-size: 0.88rem; color: var(--text-sub); line-height: 1.7; margin-bottom: 14px; }

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

.reviewer-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--grad-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.reviewer-name { font-size: 0.85rem; font-weight: 600; }
.reviewer-date { font-size: 0.72rem; color: var(--text-muted); }

/* ===================== FAQ ===================== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }

.faq-item {
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  color: var(--text-main);
  font-size: 0.95rem;
  font-weight: 600;
  text-align: left;
  gap: 12px;
  transition: background var(--transition);
}

.faq-question:hover { background: rgba(232,51,109,0.08); }

.faq-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(232,51,109,0.15);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--primary-lt);
  flex-shrink: 0;
  transition: all var(--transition);
}

.faq-item.open .faq-icon { background: var(--primary); color: #fff; transform: rotate(45deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 20px;
}

.faq-item.open .faq-answer { max-height: 300px; padding: 0 20px 18px; }
.faq-answer p { font-size: 0.88rem; color: var(--text-sub); line-height: 1.7; }

/* ===================== 联系我们 ===================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.contact-card {
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.contact-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 20px; color: var(--primary-lt); }

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

.contact-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(232,51,109,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.contact-label { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 2px; }
.contact-value { font-size: 0.9rem; color: var(--text-main); }

/* QR 码区 */
.qr-group { display: flex; gap: 20px; flex-wrap: wrap; }

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

.qr-img {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border);
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 6px;
  overflow: hidden;
}

.qr-img svg { width: 90px; height: 90px; }
.qr-label { font-size: 0.75rem; color: var(--text-sub); }

/* ===================== 社交分享 ===================== */
.share-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  padding: 24px;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.share-label { font-size: 0.85rem; color: var(--text-sub); }

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
}

.share-wechat { background: rgba(7,193,96,0.12); border-color: rgba(7,193,96,0.3); color: #07C160; }
.share-wechat:hover { background: #07C160; color: #fff; }
.share-weibo { background: rgba(230,22,45,0.12); border-color: rgba(230,22,45,0.3); color: #E6162D; }
.share-weibo:hover { background: #E6162D; color: #fff; }
.share-douyin { background: rgba(0,0,0,0.3); border-color: rgba(255,255,255,0.2); color: #fff; }
.share-douyin:hover { background: #000; color: #69C9D0; }
.share-bili { background: rgba(0,161,214,0.12); border-color: rgba(0,161,214,0.3); color: #00A1D6; }
.share-bili:hover { background: #00A1D6; color: #fff; }

/* ===================== FOOTER ===================== */
.site-footer {
  background: #0E0509;
  border-top: 1px solid var(--border);
  padding: 56px 24px 24px;
}

.footer-inner { max-width: 1280px; margin: 0 auto; }

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

.footer-brand .site-logo { margin-bottom: 14px; }
.footer-brand p { font-size: 0.82rem; color: var(--text-sub); line-height: 1.7; max-width: 280px; }

.footer-col h4 { font-size: 0.9rem; font-weight: 700; margin-bottom: 16px; color: var(--text-main); }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: 0.82rem; color: var(--text-sub); transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--primary-lt); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copy { font-size: 0.78rem; color: var(--text-muted); }
.footer-copy a { color: var(--text-muted); }
.footer-copy a:hover { color: var(--primary-lt); }

.footer-update { font-size: 0.75rem; color: var(--text-muted); }

/* ===================== AI 赋能 ===================== */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.ai-card {
  background: var(--grad-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px 22px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.ai-card::after {
  content: '';
  position: absolute;
  bottom: -40px;
  right: -40px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232,51,109,0.12) 0%, transparent 70%);
}

.ai-card:hover { transform: translateY(-4px); border-color: var(--primary); box-shadow: var(--shadow-glow); }

.ai-icon { font-size: 2.2rem; margin-bottom: 14px; }
.ai-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.ai-card p { font-size: 0.82rem; color: var(--text-sub); line-height: 1.6; }

/* ===================== HOW-TO 加入 ===================== */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

.howto-steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-lt) 100%);
  z-index: 0;
}

.step-item {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--grad-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin: 0 auto 14px;
  box-shadow: 0 4px 16px rgba(232,51,109,0.4);
}

.step-item h4 { font-size: 0.9rem; font-weight: 700; margin-bottom: 6px; }
.step-item p { font-size: 0.78rem; color: var(--text-sub); }

/* ===================== 视频播放模态框 ===================== */
.video-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}

.video-modal-overlay.active { display: flex; }

.video-modal-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  max-width: 640px;
  width: 90%;
  position: relative;
}

.video-modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-sub);
  font-size: 1.4rem;
  cursor: pointer;
  transition: color var(--transition);
}

.video-modal-close:hover { color: var(--primary); }

.video-placeholder {
  aspect-ratio: 16/9;
  background: #000;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-sub);
  font-size: 0.9rem;
}

.video-placeholder-icon { font-size: 3rem; color: var(--primary); }
.video-placeholder-title { font-size: 1rem; font-weight: 600; color: var(--text-main); }

/* ===================== 面包屑 ===================== */
.breadcrumb {
  padding: 14px 24px;
  background: rgba(45,16,32,0.5);
  border-bottom: 1px solid var(--border);
}

.breadcrumb-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.breadcrumb-inner a { color: var(--text-muted); }
.breadcrumb-inner a:hover { color: var(--primary-lt); }
.breadcrumb-inner .sep { color: var(--text-muted); }
.breadcrumb-inner .current { color: var(--primary-lt); }

/* ===================== 分页 ===================== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.page-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-sub);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all var(--transition);
}

.page-btn:hover, .page-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ===================== 标签云 ===================== */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }

.tag-item {
  padding: 5px 14px;
  background: rgba(232,51,109,0.1);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--primary-lt);
  cursor: pointer;
  transition: all var(--transition);
}

.tag-item:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===================== 统计数字动画 ===================== */
.stats-bar {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 32px 24px;
  gap: 20px;
}

.stat-item { text-align: center; }
.stat-num {
  font-size: 2rem;
  font-weight: 800;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 0.8rem; color: var(--text-sub); margin-top: 4px; }

/* ===================== 内页 Banner ===================== */
.page-banner {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 48px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(232,51,109,0.15) 0%, transparent 70%);
}

.page-banner h1 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  position: relative;
  z-index: 1;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 10px;
}

.page-banner p { font-size: 0.95rem; color: var(--text-sub); position: relative; z-index: 1; }

/* ===================== 响应式 ===================== */
@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
  .media-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-grid { grid-template-columns: repeat(2, 1fr); }
  .howto-steps { grid-template-columns: repeat(2, 1fr); }
  .howto-steps::before { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .header-inner { height: 60px; }
  .site-nav { display: none; position: absolute; top: 60px; left: 0; right: 0; background: rgba(26,10,18,0.98); flex-direction: column; padding: 16px; border-bottom: 1px solid var(--border); }
  .site-nav.open { display: flex; }
  .menu-toggle { display: flex; }
  .search-input-wrap { width: 160px; }
  .hero-section { min-height: 420px; }
  .hero-stats { gap: 20px; }
  .media-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-grid { grid-template-columns: 1fr; }
  .howto-steps { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .experts-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .section { padding: 48px 16px; }
  .video-grid { grid-template-columns: 1fr; }
  .media-grid { grid-template-columns: 1fr; }
  .experts-grid { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-outline { justify-content: center; }
  .search-input-wrap { width: 130px; }
}

/* ===================== 动画 ===================== */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===================== 懒加载占位 ===================== */
img[loading="lazy"] { background: var(--bg-card2); }

/* ===================== 滚动置顶按钮 ===================== */
.scroll-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--grad-main);
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(232,51,109,0.5);
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition);
  z-index: 500;
}

.scroll-top.visible { opacity: 1; transform: translateY(0); }
.scroll-top:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(232,51,109,0.7); }