/* ========================================
   糖心 - 主样式文件
   vfsvaek.cn
   ======================================== */

/* CSS 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', '微软雅黑', 'Helvetica Neue', Arial, sans-serif;
  background: #0f0f13;
  color: #e8e8f0;
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color 0.3s; }
a:hover { color: #e63946; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* ========================================
   CSS Variables
   ======================================== */
:root {
  --primary: #e63946;
  --primary-dark: #c1121f;
  --secondary: #2d6a4f;
  --accent: #f4a261;
  --bg-dark: #0f0f13;
  --bg-card: #1a1a24;
  --bg-card2: #22222e;
  --border: #2e2e3e;
  --text-main: #e8e8f0;
  --text-muted: #9999b3;
  --text-light: #ccccdd;
  --gradient-primary: linear-gradient(135deg, #e63946 0%, #c1121f 100%);
  --gradient-hero: linear-gradient(135deg, #0f0f13 0%, #1a1a24 50%, #0f1a1a 100%);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-hover: 0 8px 40px rgba(230,57,70,0.25);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --transition: 0.3s ease;
}

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

/* ========================================
   Header & Navigation
   ======================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15,15,19,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.5); }

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  height: 68px;
  gap: 32px;
}

.logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: contain;
}
.logo-text {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 2px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}
.main-nav a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-light);
  white-space: nowrap;
  transition: all var(--transition);
}
.main-nav a:hover, .main-nav a.active {
  color: #fff;
  background: rgba(230,57,70,0.15);
}
.main-nav a.active { color: var(--primary); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.btn-live {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--gradient-primary);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  transition: transform var(--transition), box-shadow var(--transition);
}
.btn-live:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(230,57,70,0.4); color: #fff; }
.live-dot {
  width: 8px; height: 8px;
  background: #fff;
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: all var(--transition);
}

/* Search Bar */
.search-bar-wrap {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-form {
  display: flex;
  align-items: center;
  flex: 1;
  max-width: 600px;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.search-form:focus-within { border-color: var(--primary); }
.search-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 10px 18px;
  font-size: 0.9rem;
  color: var(--text-main);
}
.search-input::placeholder { color: var(--text-muted); }
.search-btn {
  background: var(--gradient-primary);
  border: none;
  padding: 10px 20px;
  color: #fff;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  transition: opacity var(--transition);
}
.search-btn:hover { opacity: 0.9; }
.search-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.search-tag {
  padding: 4px 12px;
  background: rgba(230,57,70,0.1);
  border: 1px solid rgba(230,57,70,0.3);
  border-radius: 12px;
  font-size: 0.78rem;
  color: var(--primary);
  cursor: pointer;
  transition: all var(--transition);
}
.search-tag:hover { background: rgba(230,57,70,0.2); }

/* ========================================
   Hero Section
   ======================================== */
.hero {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--gradient-hero);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/banner_hero.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.25;
  filter: blur(2px);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,15,19,0.9) 0%, rgba(15,15,19,0.6) 60%, rgba(15,15,19,0.85) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 80px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(230,57,70,0.15);
  border: 1px solid rgba(230,57,70,0.4);
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--primary);
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #fff;
}
.hero h1 span { color: var(--primary); }
.hero p {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 480px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--gradient-primary);
  border-radius: 30px;
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); color: #fff; }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: transparent;
  border: 2px solid var(--border);
  border-radius: 30px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-light);
  transition: all var(--transition);
  cursor: pointer;
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 40px;
}
.stat-item { text-align: center; }
.stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary);
  display: block;
}
.stat-label { font-size: 0.8rem; color: var(--text-muted); }

.hero-visual {
  position: relative;
}
.hero-video-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.hero-video-card {
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  aspect-ratio: 16/9;
  cursor: pointer;
}
.hero-video-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.hero-video-card:hover img { transform: scale(1.05); }
.hero-video-card .play-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}
.hero-video-card:hover .play-overlay { opacity: 1; }
.play-btn-sm {
  width: 44px; height: 44px;
  background: rgba(230,57,70,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1rem;
}
.hero-video-card.large { grid-column: span 2; aspect-ratio: 16/7; }

/* ========================================
   Section Common
   ======================================== */
.section {
  padding: 72px 0;
}
.section-alt { background: var(--bg-card); }
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-label {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(230,57,70,0.12);
  border: 1px solid rgba(230,57,70,0.3);
  border-radius: 20px;
  font-size: 0.78rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.section-title span { color: var(--primary); }
.section-desc {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
}

/* ========================================
   Video Cards
   ======================================== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.video-grid-4 { grid-template-columns: repeat(4, 1fr); }
.video-grid-3 { grid-template-columns: repeat(3, 1fr); }

.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(230,57,70,0.4);
}

.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-card2);
}
.video-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.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 var(--transition);
}
.video-card:hover .video-play-btn { background: rgba(0,0,0,0.35); }
.play-icon {
  width: 52px; height: 52px;
  background: rgba(230,57,70,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  opacity: 0;
  transform: scale(0.8);
  transition: all var(--transition);
  backdrop-filter: blur(4px);
}
.video-card:hover .play-icon {
  opacity: 1;
  transform: scale(1);
}

.video-duration {
  position: absolute;
  bottom: 8px; right: 8px;
  background: rgba(0,0,0,0.75);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  color: #fff;
}
.video-quality {
  position: absolute;
  top: 8px; left: 8px;
  background: var(--primary);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.7rem;
  color: #fff;
  font-weight: 600;
}

.video-info {
  padding: 14px 16px;
}
.video-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
  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: 0.78rem;
  color: var(--text-muted);
}
.video-author {
  display: flex;
  align-items: center;
  gap: 6px;
}
.author-avatar {
  width: 22px; height: 22px;
  border-radius: 50%;
  object-fit: cover;
}
.video-stats {
  display: flex;
  gap: 10px;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 6px;
}
.video-stats span { display: flex; align-items: center; gap: 3px; }

/* ========================================
   Category Tabs
   ======================================== */
.cat-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.cat-tab {
  padding: 8px 18px;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
}
.cat-tab:hover, .cat-tab.active {
  background: rgba(230,57,70,0.15);
  border-color: var(--primary);
  color: var(--primary);
}

/* ========================================
   Expert Cards
   ======================================== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 20px;
  border: 1px solid var(--border);
  text-align: center;
  transition: all var(--transition);
}
.expert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(230,57,70,0.4);
}
.expert-avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid var(--primary);
}
.expert-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}
.expert-role {
  font-size: 0.82rem;
  color: var(--primary);
  margin-bottom: 10px;
}
.expert-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}
.expert-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 16px;
}
.expert-tag {
  padding: 3px 10px;
  background: rgba(230,57,70,0.1);
  border-radius: 10px;
  font-size: 0.72rem;
  color: var(--primary);
}
.expert-actions {
  display: flex;
  gap: 8px;
  justify-content: center;
}
.btn-sm {
  padding: 6px 14px;
  border-radius: 16px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}
.btn-sm-primary {
  background: var(--gradient-primary);
  color: #fff;
}
.btn-sm-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.btn-sm-outline:hover { border-color: var(--primary); color: var(--primary); }

/* ========================================
   Review Cards
   ======================================== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.review-card:hover { border-color: rgba(230,57,70,0.3); }
.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.reviewer-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.reviewer-name { font-weight: 600; color: #fff; font-size: 0.92rem; }
.reviewer-meta { font-size: 0.75rem; color: var(--text-muted); }
.review-stars { color: #f4a261; font-size: 0.85rem; margin-bottom: 10px; }
.review-text { font-size: 0.88rem; color: var(--text-light); line-height: 1.7; }
.review-date { font-size: 0.75rem; color: var(--text-muted); margin-top: 10px; }

/* ========================================
   FAQ Section
   ======================================== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item:hover { border-color: rgba(230,57,70,0.3); }
.faq-question {
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 600;
  color: var(--text-main);
  font-size: 0.95rem;
}
.faq-icon {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: rgba(230,57,70,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 0.8rem;
  transition: transform var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  display: none;
  padding: 0 24px 18px;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.8;
}
.faq-item.open .faq-answer { display: block; }

/* ========================================
   Partner Logos
   ======================================== */
.partner-grid {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}
.partner-item {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 28px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-muted);
  transition: all var(--transition);
  min-width: 120px;
  text-align: center;
}
.partner-item:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(230,57,70,0.08);
}

/* ========================================
   How-To Steps
   ======================================== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}
.step-card {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  position: relative;
  transition: all var(--transition);
}
.step-card:hover { border-color: rgba(230,57,70,0.4); transform: translateY(-3px); }
.step-num {
  width: 52px; height: 52px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  margin: 0 auto 16px;
}
.step-title {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}
.step-desc { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }

/* ========================================
   Contact Section
   ======================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--border);
}
.contact-info-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 16px;
}
.contact-icon {
  width: 40px; height: 40px;
  background: rgba(230,57,70,0.12);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1rem;
  flex-shrink: 0;
}
.contact-label { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 2px; }
.contact-value { font-size: 0.92rem; color: var(--text-main); font-weight: 500; }

.qr-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.qr-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border);
  text-align: center;
}
.qr-img {
  width: 120px; height: 120px;
  margin: 0 auto 12px;
  border-radius: var(--radius-sm);
  background: #fff;
  padding: 8px;
}
.qr-label { font-size: 0.85rem; color: var(--text-muted); }

/* ========================================
   Share Buttons
   ======================================== */
.share-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}
.share-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 24px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  color: #fff;
}
.share-wechat { background: #07c160; }
.share-weibo { background: #e6162d; }
.share-douyin { background: #010101; border: 1px solid #333; }
.share-bilibili { background: #00a1d6; }
.share-btn:hover { transform: translateY(-2px); opacity: 0.9; }

/* ========================================
   AI Features
   ======================================== */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.ai-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px 24px;
  border: 1px solid var(--border);
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.ai-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-primary);
}
.ai-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.ai-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
  display: block;
}
.ai-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}
.ai-desc { font-size: 0.85rem; color: var(--text-muted); line-height: 1.7; }

/* ========================================
   Community Features
   ======================================== */
.community-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.community-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px 20px;
  border: 1px solid var(--border);
  text-align: center;
  transition: all var(--transition);
  cursor: pointer;
}
.community-card:hover {
  border-color: var(--primary);
  background: rgba(230,57,70,0.06);
  transform: translateY(-3px);
}
.community-icon { font-size: 2rem; margin-bottom: 12px; display: block; }
.community-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}
.community-count { font-size: 0.78rem; color: var(--primary); }

/* ========================================
   Footer
   ======================================== */
.site-footer {
  background: #0a0a0e;
  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: 0.85rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}
.footer-social {
  display: flex;
  gap: 10px;
}
.social-btn {
  width: 36px; height: 36px;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: all var(--transition);
  cursor: pointer;
}
.social-btn:hover { border-color: var(--primary); color: var(--primary); }

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--primary); }

.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-copyright {
  font-size: 0.82rem;
  color: var(--text-muted);
}
.footer-copyright a { color: var(--primary); }
.footer-update {
  font-size: 0.78rem;
  color: var(--text-muted);
}
.footer-icp { font-size: 0.78rem; color: var(--text-muted); }

/* ========================================
   Breadcrumb
   ======================================== */
.breadcrumb {
  padding: 14px 0;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}
.breadcrumb-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--text-main); }

/* ========================================
   Inner Page Hero
   ======================================== */
.inner-hero {
  padding: 60px 0;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.inner-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(230,57,70,0.08) 0%, transparent 60%);
}
.inner-hero-content { position: relative; z-index: 1; }
.inner-hero h1 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.inner-hero h1 span { color: var(--primary); }
.inner-hero p {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 600px;
  line-height: 1.8;
}

/* ========================================
   Pagination
   ======================================== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 48px;
}
.page-btn {
  width: 40px; height: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.88rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
}
.page-btn:hover, .page-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ========================================
   Modal / Video Player
   ======================================== */
.video-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.9);
  display: none;
  align-items: center;
  justify-content: center;
}
.video-modal.open { display: flex; }
.modal-inner {
  width: 90%;
  max-width: 900px;
  position: relative;
}
.modal-close {
  position: absolute;
  top: -40px; right: 0;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
}
.modal-video {
  width: 100%;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 1rem;
}

/* ========================================
   Notification Bar
   ======================================== */
.notice-bar {
  background: var(--gradient-primary);
  padding: 8px 0;
  text-align: center;
  font-size: 0.82rem;
  color: #fff;
}
.notice-bar a { color: #fff; text-decoration: underline; }

/* ========================================
   Loading Skeleton
   ======================================== */
.skeleton {
  background: linear-gradient(90deg, var(--bg-card2) 25%, var(--bg-card) 50%, var(--bg-card2) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
  .video-grid-4 { grid-template-columns: repeat(3, 1fr); }
  .ai-grid { grid-template-columns: repeat(2, 1fr); }
  .community-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0; right: 0;
    background: rgba(15,15,19,0.98);
    border-bottom: 1px solid var(--border);
    padding: 16px;
    gap: 4px;
  }
  .hamburger { display: flex; }
  .hero-content { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .video-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .video-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .ai-grid { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .search-tags { display: none; }
  .hero-stats { gap: 20px; }
  .qr-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .video-grid-4, .video-grid-3, .video-grid { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 1.8rem; }
  .hero-actions { flex-direction: column; }
  .steps-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.hidden { display: none; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-8 { gap: 8px; }
.gap-16 { gap: 16px; }

/* ========================================
   Inner Page Specific
   ======================================== */
.content-article {
  max-width: 900px;
  margin: 0 auto;
}
.content-article h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  margin: 32px 0 16px;
}
.content-article h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-main);
  margin: 24px 0 12px;
}
.content-article p {
  color: var(--text-light);
  line-height: 1.9;
  margin-bottom: 16px;
}
.content-article ul {
  list-style: disc;
  padding-left: 24px;
  color: var(--text-light);
  line-height: 1.9;
  margin-bottom: 16px;
}

/* Highlight box */
.highlight-box {
  background: rgba(230,57,70,0.08);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 20px;
  margin: 20px 0;
  font-size: 0.92rem;
  color: var(--text-light);
}