/* =============================================
   糖心vlog - 影视传媒视频社区
   原创配色：深紫红 #2d0a1e + 玫瑰金 #c9956a + 暗金 #d4a843
   字体：系统中文字体
   版本：1.0
   ============================================= */

/* ---- 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: #0f0610;
  color: #e8d5c4;
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: #c9956a; text-decoration: none; transition: color .3s; }
a:hover { color: #f0c080; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
.seo-noise { display: none !important; visibility: hidden !important; }

/* ---- CSS Variables ---- */
:root {
  --primary: #2d0a1e;
  --primary-light: #4a1232;
  --accent: #c9956a;
  --accent-bright: #f0c080;
  --gold: #d4a843;
  --gold-light: #f5d78e;
  --dark: #0f0610;
  --dark2: #1a0b22;
  --dark3: #240d2e;
  --text: #e8d5c4;
  --text-muted: #a08878;
  --border: rgba(201,149,106,0.25);
  --shadow: 0 8px 32px rgba(45,10,30,0.6);
  --radius: 12px;
  --radius-lg: 20px;
}

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

/* ---- Container ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.container-wide { max-width: 1400px; margin: 0 auto; padding: 0 20px; }

/* ---- Section Titles ---- */
.section-header { text-align: center; margin-bottom: 50px; }
.section-tag {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  color: var(--dark);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 12px;
}
.section-title span { color: var(--accent); }
.section-desc { color: var(--text-muted); font-size: 1rem; max-width: 600px; margin: 0 auto; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .3s;
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, #c9956a, #d4a843);
  color: #1a0b22;
}
.btn-primary:hover {
  background: linear-gradient(135deg, #f0c080, #e8b855);
  color: #0f0610;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(201,149,106,0.4);
}
.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}
.btn-outline:hover {
  background: var(--accent);
  color: var(--dark);
  transform: translateY(-2px);
}
.btn-ghost {
  background: rgba(255,255,255,0.08);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.15);
}
.btn-ghost:hover { background: rgba(255,255,255,0.15); color: #fff; }

/* ============================================
   HEADER / NAV
   ============================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(15,6,16,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: all .3s;
}
.site-header.scrolled {
  background: rgba(15,6,16,0.98);
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 20px;
}
.logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.logo-img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent);
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.logo-name {
  font-size: 18px;
  font-weight: 800;
  background: linear-gradient(135deg, #f0c080, #c9956a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.logo-sub {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 1px;
}
.main-nav { display: flex; align-items: center; gap: 4px; }
.nav-item {
  position: relative;
  color: #ccc;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 6px;
  transition: all .3s;
  white-space: nowrap;
}
.nav-item:hover, .nav-item.active {
  color: var(--accent-bright);
  background: rgba(201,149,106,0.12);
}
.nav-item::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 20px; height: 2px;
  background: var(--accent);
  border-radius: 1px;
  transition: transform .3s;
}
.nav-item:hover::after, .nav-item.active::after { transform: translateX(-50%) scaleX(1); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.header-search {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 14px;
  gap: 8px;
}
.header-search input {
  background: none;
  border: none;
  outline: none;
  color: #fff;
  font-size: 13px;
  width: 140px;
}
.header-search input::placeholder { color: var(--text-muted); }
.search-icon { color: var(--text-muted); font-size: 14px; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--accent);
  border-radius: 1px;
  transition: all .3s;
}

/* ============================================
   HERO BANNER
   ============================================ */
.hero-banner {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 68px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/banner.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
    rgba(15,6,16,0.88) 0%,
    rgba(45,10,30,0.75) 40%,
    rgba(15,6,16,0.60) 100%
  );
}
.hero-bg::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 200px;
  background: linear-gradient(to top, var(--dark), transparent);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(201,149,106,0.15);
  border: 1px solid rgba(201,149,106,0.4);
  border-radius: 20px;
  padding: 6px 16px;
  font-size: 13px;
  color: var(--accent-bright);
  margin-bottom: 24px;
}
.hero-badge-dot {
  width: 8px; height: 8px;
  background: #e74c3c;
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}
.hero-title {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 20px;
}
.hero-title .brand {
  background: linear-gradient(135deg, #f0c080, #c9956a, #d4a843);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1.05rem;
  color: rgba(232,213,196,0.85);
  margin-bottom: 36px;
  line-height: 1.8;
  max-width: 560px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }
.hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}
.hero-stat { text-align: left; }
.hero-stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, #f0c080, #c9956a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.hero-stat-label { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.hero-scroll {
  position: absolute;
  bottom: 40px; left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 12px;
  animation: bounce 2s infinite;
}
.hero-scroll-arrow {
  width: 20px; height: 20px;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(45deg);
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ============================================
   VIDEO SECTION - 精选视频
   ============================================ */
.video-section {
  padding: 90px 0;
  background: var(--dark2);
  position: relative;
}
.video-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}
.video-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 40px;
}
.video-tab {
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  transition: all .3s;
}
.video-tab.active, .video-tab:hover {
  background: linear-gradient(135deg, var(--accent), var(--gold));
  color: var(--dark);
  border-color: transparent;
}
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.video-card {
  background: var(--dark3);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all .35s;
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 16px 40px rgba(201,149,106,0.2);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}
.video-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.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);
  transition: background .3s;
}
.video-card:hover .video-play-btn { background: rgba(0,0,0,0.45); }
.play-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.7);
  transition: all .3s;
  box-shadow: 0 4px 20px rgba(201,149,106,0.5);
}
.video-card:hover .play-icon { opacity: 1; transform: scale(1); }
.play-icon::after {
  content: '';
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent var(--dark);
  margin-left: 3px;
}
.video-duration {
  position: absolute;
  bottom: 8px; right: 10px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 12px;
  padding: 2px 7px;
  border-radius: 4px;
}
.video-tag {
  position: absolute;
  top: 10px; left: 10px;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  color: var(--dark);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
}
.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;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
}
.video-views { display: flex; align-items: center; gap: 4px; }
.video-date { color: var(--text-muted); }

/* ============================================
   MEDIA SECTION - 影视传媒
   ============================================ */
.media-section {
  padding: 90px 0;
  background: var(--dark);
  position: relative;
  overflow: hidden;
}
.media-section::before {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(201,149,106,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.media-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: center;
}
.media-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.media-visual img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 2px solid var(--border);
}
.media-visual-badge {
  position: absolute;
  bottom: 20px; left: 20px;
  background: rgba(15,6,16,0.9);
  border: 1px solid var(--accent);
  border-radius: 10px;
  padding: 12px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.media-badge-icon {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}
.media-badge-text { font-size: 13px; }
.media-badge-text strong { display: block; color: #fff; font-size: 15px; }
.media-content { padding: 20px 0; }
.media-content h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  line-height: 1.3;
}
.media-content h2 span { color: var(--accent); }
.media-content p { color: var(--text-muted); margin-bottom: 28px; line-height: 1.8; }
.media-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}
.media-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px;
  background: var(--dark2);
  border-radius: 10px;
  border: 1px solid var(--border);
  transition: border-color .3s;
}
.media-feature:hover { border-color: var(--accent); }
.feature-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, rgba(201,149,106,0.2), rgba(212,168,67,0.2));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.feature-text h4 { font-size: 14px; color: #fff; margin-bottom: 4px; }
.feature-text p { font-size: 12px; color: var(--text-muted); margin: 0; }

/* ============================================
   ENTERTAINMENT SECTION - 娱乐专区
   ============================================ */
.entertainment-section {
  padding: 90px 0;
  background: var(--dark2);
  position: relative;
}
.ent-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.ent-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 3/4;
  cursor: pointer;
}
.ent-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.ent-card:hover img { transform: scale(1.08); }
.ent-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,6,16,0.92) 0%, rgba(15,6,16,0.2) 60%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
  transition: all .3s;
}
.ent-card:hover .ent-card-overlay {
  background: linear-gradient(to top, rgba(45,10,30,0.95) 0%, rgba(45,10,30,0.4) 60%, transparent 100%);
}
.ent-card-tag {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  color: var(--dark);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 8px;
  width: fit-content;
}
.ent-card-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.ent-card-desc { font-size: 12px; color: rgba(232,213,196,0.7); line-height: 1.5; }
.ent-card-play {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 52px; height: 52px;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .3s;
}
.ent-card:hover .ent-card-play { transform: translate(-50%, -50%) scale(1); }
.ent-card-play::after {
  content: '';
  border-style: solid;
  border-width: 9px 0 9px 16px;
  border-color: transparent transparent transparent var(--dark);
  margin-left: 3px;
}

/* ============================================
   AI SECTION - AI赋能
   ============================================ */
.ai-section {
  padding: 90px 0;
  background: var(--dark);
  position: relative;
  overflow: hidden;
}
.ai-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('../images/ai_bg.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.08;
}
.ai-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
  z-index: 1;
}
.ai-card {
  background: rgba(26,11,34,0.85);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: all .35s;
  backdrop-filter: blur(10px);
}
.ai-card:hover {
  border-color: var(--accent);
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(201,149,106,0.15);
}
.ai-card-icon {
  width: 72px; height: 72px;
  background: linear-gradient(135deg, rgba(201,149,106,0.2), rgba(212,168,67,0.2));
  border: 2px solid rgba(201,149,106,0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin: 0 auto 20px;
  transition: all .3s;
}
.ai-card:hover .ai-card-icon {
  background: linear-gradient(135deg, var(--accent), var(--gold));
  border-color: transparent;
}
.ai-card h3 { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.ai-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 20px; }
.ai-card-tags { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; }
.ai-tag {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 12px;
  background: rgba(201,149,106,0.12);
  color: var(--accent);
  border: 1px solid rgba(201,149,106,0.25);
}

/* ============================================
   COMMUNITY SECTION - 社区功能
   ============================================ */
.community-section {
  padding: 90px 0;
  background: var(--dark2);
  position: relative;
}
.community-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 30px;
}
.community-main { display: flex; flex-direction: column; gap: 20px; }
.community-post {
  background: var(--dark3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  gap: 16px;
  transition: border-color .3s;
}
.community-post:hover { border-color: var(--accent); }
.post-avatar {
  width: 48px; height: 48px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid var(--border);
}
.post-content { flex: 1; }
.post-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.post-author { font-size: 14px; font-weight: 600; color: #fff; }
.post-badge {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  color: var(--dark);
  font-weight: 700;
}
.post-time { font-size: 12px; color: var(--text-muted); margin-left: auto; }
.post-text { font-size: 14px; color: var(--text-muted); line-height: 1.6; margin-bottom: 12px; }
.post-actions {
  display: flex;
  gap: 16px;
}
.post-action {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 13px;
  color: var(--text-muted);
  cursor: pointer;
  transition: color .3s;
}
.post-action:hover { color: var(--accent); }
.community-sidebar { display: flex; flex-direction: column; gap: 20px; }
.sidebar-widget {
  background: var(--dark3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.widget-title {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}
.widget-title::before {
  content: '';
  width: 4px; height: 16px;
  background: linear-gradient(to bottom, var(--accent), var(--gold));
  border-radius: 2px;
}
.hot-topic {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  cursor: pointer;
  transition: all .3s;
}
.hot-topic:last-child { border-bottom: none; }
.hot-topic:hover .topic-name { color: var(--accent); }
.topic-rank {
  width: 24px; height: 24px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}
.topic-rank.top1 { background: linear-gradient(135deg, #e74c3c, #c0392b); color: #fff; }
.topic-rank.top2 { background: linear-gradient(135deg, #e67e22, #d35400); color: #fff; }
.topic-rank.top3 { background: linear-gradient(135deg, #f39c12, #e67e22); color: #fff; }
.topic-rank.other { background: rgba(255,255,255,0.08); color: var(--text-muted); }
.topic-name { font-size: 13px; color: #ccc; flex: 1; }
.topic-count { font-size: 11px; color: var(--text-muted); }

/* ============================================
   EXPERTS SECTION - 专家团队
   ============================================ */
.experts-section {
  padding: 90px 0;
  background: var(--dark);
}
.experts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.expert-card {
  background: var(--dark2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .35s;
  text-align: center;
}
.expert-card:hover {
  border-color: var(--accent);
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}
.expert-photo-wrap {
  position: relative;
  padding: 28px 28px 0;
}
.expert-photo {
  width: 110px; height: 110px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent);
  margin: 0 auto;
}
.expert-badge {
  position: absolute;
  bottom: 0; right: 28px;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  color: var(--dark);
  font-size: 10px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 10px;
}
.expert-info { padding: 20px; }
.expert-name { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.expert-role { font-size: 13px; color: var(--accent); margin-bottom: 12px; }
.expert-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; }
.expert-tags { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; }
.expert-tag {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 12px;
  background: rgba(201,149,106,0.1);
  color: var(--accent);
  border: 1px solid rgba(201,149,106,0.2);
}

/* ============================================
   FAQ SECTION
   ============================================ */
.faq-section {
  padding: 90px 0;
  background: var(--dark2);
}
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--dark3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .3s;
}
.faq-item.open { border-color: var(--accent); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  gap: 16px;
  user-select: none;
}
.faq-question:hover { color: var(--accent-bright); }
.faq-arrow {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: rgba(201,149,106,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all .3s;
  font-size: 14px;
  color: var(--accent);
}
.faq-item.open .faq-arrow { background: var(--accent); color: var(--dark); transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
}
.faq-answer-inner {
  padding: 0 22px 18px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ============================================
   REVIEWS SECTION - 用户评价
   ============================================ */
.reviews-section {
  padding: 90px 0;
  background: var(--dark);
}
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: var(--dark2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all .3s;
}
.review-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}
.review-stars { display: flex; gap: 3px; margin-bottom: 14px; }
.star { color: var(--gold); font-size: 16px; }
.review-text { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 18px; font-style: italic; }
.review-author { display: flex; align-items: center; gap: 12px; }
.review-avatar {
  width: 42px; height: 42px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
}
.review-name { font-size: 14px; font-weight: 600; color: #fff; }
.review-info { font-size: 12px; color: var(--text-muted); }

/* ============================================
   STATS BAR
   ============================================ */
.stats-bar {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 40px 0;
}
.stats-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-item { padding: 10px; }
.stat-number {
  font-size: 2.2rem;
  font-weight: 900;
  background: linear-gradient(135deg, #f0c080, #c9956a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 8px;
}
.stat-label { font-size: 13px; color: var(--text-muted); }

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: var(--primary);
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo-wrap { margin-bottom: 16px; }
.footer-desc { font-size: 13px; color: var(--text-muted); line-height: 1.8; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.social-btn {
  width: 38px; height: 38px;
  border-radius: 8px;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 16px;
  transition: all .3s;
  text-decoration: none;
}
.social-btn:hover { background: var(--accent); color: var(--dark); border-color: var(--accent); }
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-link {
  font-size: 13px;
  color: var(--text-muted);
  transition: color .3s;
  display: flex;
  align-items: center;
  gap: 6px;
}
.footer-link:hover { color: var(--accent); }
.footer-link::before { content: '›'; color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-copy { font-size: 13px; color: var(--text-muted); }
.footer-update { font-size: 13px; color: var(--text-muted); }
.footer-update span { color: var(--accent); }

/* ============================================
   VIDEO MODAL
   ============================================ */
.video-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s;
}
.video-modal.open { opacity: 1; pointer-events: all; }
.modal-inner {
  position: relative;
  width: 90%;
  max-width: 900px;
  background: var(--dark2);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--accent);
  transform: scale(0.9);
  transition: transform .3s;
}
.video-modal.open .modal-inner { transform: scale(1); }
.modal-close {
  position: absolute;
  top: 14px; right: 14px;
  z-index: 10;
  width: 36px; height: 36px;
  background: rgba(0,0,0,0.7);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #fff;
  font-size: 18px;
  transition: all .3s;
}
.modal-close:hover { background: var(--accent); color: var(--dark); }
.modal-video-wrap { aspect-ratio: 16/9; background: #000; }
.modal-video-wrap video { width: 100%; height: 100%; }
.modal-info { padding: 20px; }
.modal-title { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.modal-desc { font-size: 14px; color: var(--text-muted); }

/* ============================================
   BREADCRUMB
   ============================================ */
.breadcrumb {
  padding: 16px 0;
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-muted); transition: color .3s; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--accent); }

/* ============================================
   PAGE HERO (inner pages)
   ============================================ */
.page-hero {
  padding: 120px 0 60px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--dark2) 100%);
  position: relative;
  overflow: hidden;
  text-align: center;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('../images/community_bg.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.07;
}
.page-hero-content { position: relative; z-index: 1; }
.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 900;
  color: #fff;
  margin-bottom: 12px;
}
.page-hero h1 span { color: var(--accent); }
.page-hero p { font-size: 1rem; color: var(--text-muted); max-width: 600px; margin: 0 auto; }

/* ============================================
   TIMELINE (about page)
   ============================================ */
.timeline { position: relative; padding: 20px 0; }
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--gold));
  transform: translateX(-50%);
}
.timeline-item {
  display: flex;
  justify-content: flex-end;
  padding-right: calc(50% + 30px);
  margin-bottom: 40px;
  position: relative;
}
.timeline-item:nth-child(even) {
  justify-content: flex-start;
  padding-right: 0;
  padding-left: calc(50% + 30px);
}
.timeline-dot {
  position: absolute;
  left: 50%;
  top: 20px;
  transform: translateX(-50%);
  width: 14px; height: 14px;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  border-radius: 50%;
  border: 3px solid var(--dark2);
  z-index: 1;
}
.timeline-content {
  background: var(--dark3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  max-width: 380px;
  transition: border-color .3s;
}
.timeline-content:hover { border-color: var(--accent); }
.timeline-year {
  font-size: 12px;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 8px;
}
.timeline-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.timeline-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ============================================
   CONTACT FORM
   ============================================ */
.contact-form {
  background: var(--dark3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 14px; color: #ccc; margin-bottom: 8px; font-weight: 500; }
.form-input, .form-textarea, .form-select {
  width: 100%;
  background: var(--dark2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  color: #fff;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color .3s;
}
.form-input:focus, .form-textarea:focus, .form-select:focus { border-color: var(--accent); }
.form-textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ============================================
   ANNOUNCEMENT BAR
   ============================================ */
.announcement-bar {
  background: linear-gradient(90deg, var(--primary), var(--primary-light), var(--primary));
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
  text-align: center;
  font-size: 13px;
  color: var(--accent-bright);
  overflow: hidden;
}
.announcement-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.announcement-tag {
  background: linear-gradient(135deg, var(--accent), var(--gold));
  color: var(--dark);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .media-grid { grid-template-columns: 1fr; }
  .media-visual { max-width: 600px; margin: 0 auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .ent-cards { grid-template-columns: repeat(2, 1fr); }
  .ai-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: rgba(15,6,16,0.98);
    padding: 20px;
    border-bottom: 1px solid var(--border);
    z-index: 999;
    gap: 4px;
  }
  .hamburger { display: flex; }
  .header-search { display: none; }
  .hero-title { font-size: 1.8rem; }
  .hero-stats { gap: 20px; }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .ent-cards { grid-template-columns: repeat(2, 1fr); }
  .ai-cards { grid-template-columns: 1fr; }
  .experts-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .community-layout { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .timeline::before { left: 20px; }
  .timeline-item, .timeline-item:nth-child(even) {
    padding-left: 50px;
    padding-right: 0;
    justify-content: flex-start;
  }
  .timeline-dot { left: 20px; }
  .media-features { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .ent-cards { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
}

/* ===== 联系页面 ===== */
.contact-items { display: flex; flex-direction: column; gap: 24px; }
.contact-item { display: flex; align-items: flex-start; gap: 16px; background: var(--dark3); border-radius: 12px; padding: 20px 24px; border: 1px solid var(--border); transition: transform .2s; }
.contact-item:hover { transform: translateY(-3px); border-color: var(--accent); }
.contact-icon { font-size: 24px; flex-shrink: 0; width: 48px; height: 48px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg,var(--primary),var(--accent)); border-radius: 10px; }
.contact-item h3 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.contact-item p { font-size: 14px; color: var(--text-muted); margin: 0; }

/* ===== 专家页面 ===== */
.experts-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.expert-photo-wrap { position: relative; margin-bottom: 16px; }
.expert-photo { width: 100%; height: 220px; object-fit: cover; border-radius: 12px; }
.expert-badge { position: absolute; top: 12px; right: 12px; background: linear-gradient(135deg,var(--accent),var(--gold)); color: var(--dark); font-size: 11px; font-weight: 700; padding: 4px 10px; border-radius: 20px; }
.expert-name { font-size: 18px; font-weight: 800; color: #fff; margin-bottom: 4px; }
.expert-role { font-size: 13px; color: var(--accent); font-weight: 600; margin-bottom: 10px; }
.expert-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 12px; }
.expert-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.expert-tag { background: rgba(201,149,106,.15); color: var(--accent); font-size: 11px; padding: 3px 10px; border-radius: 20px; }

/* ===== AI标签 ===== */
.ai-tag { background: rgba(212,168,67,.15); color: var(--gold); font-size: 11px; padding: 3px 10px; border-radius: 20px; }

/* ===== 面包屑 ===== */
.page-hero .breadcrumb { display: flex; align-items: center; gap: 4px; font-size: 13px; }
.page-hero .breadcrumb a { color: rgba(255,255,255,.6); text-decoration: none; }
.page-hero .breadcrumb a:hover { color: var(--accent); }
.page-hero .breadcrumb .sep { color: rgba(255,255,255,.4); margin: 0 4px; }
.page-hero .breadcrumb .current { color: rgba(255,255,255,.9); }

/* ===== 表单 ===== */
.form-group label { display: block; font-size: 13px; color: var(--text-muted); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; background: var(--dark3); border: 1px solid var(--border); border-radius: 8px; padding: 10px 14px; color: #fff; font-size: 14px; outline: none; transition: border-color .3s; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--accent); }
.form-group select option { background: var(--dark3); }