/* =============================================
   51吃瓜官网 - 主样式文件
   风格：温暖治愈·自然生活·人文气息
   色系：柔和大地色系
   ============================================= */

/* CSS 变量 */
:root {
  --color-primary: #c0392b;
  --color-primary-light: #e74c3c;
  --color-primary-dark: #96281b;
  --color-accent: #e67e22;
  --color-warm: #f39c12;
  --color-earth: #8b6914;
  --color-bg: #faf8f5;
  --color-bg-alt: #f5f0e8;
  --color-bg-card: #ffffff;
  --color-text: #3d3530;
  --color-text-light: #7a6a60;
  --color-text-muted: #a89b90;
  --color-border: #e8e0d5;
  --color-shadow: rgba(139, 105, 20, 0.08);
  --font-main: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', '微软雅黑', sans-serif;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px var(--color-shadow);
  --shadow-md: 0 4px 20px var(--color-shadow);
  --shadow-lg: 0 8px 40px rgba(139, 105, 20, 0.12);
  --transition: all 0.3s ease;
  --max-width: 1200px;
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-main);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--color-primary-dark); }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: var(--font-main); }

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* =============================================
   Header & Navigation
   ============================================= */
.site-header {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 12px rgba(192, 57, 43, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 20px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.logo-icon {
  font-size: 28px;
  line-height: 1;
}

.logo-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 1px;
}

.main-nav ul {
  display: flex;
  gap: 6px;
  align-items: center;
}

.main-nav a {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
}

.main-nav a:hover,
.main-nav a.nav-active {
  background: var(--color-primary);
  color: #fff;
}

.mobile-menu-btn {
  display: none;
  font-size: 22px;
  color: var(--color-text);
  padding: 6px;
}

/* Search Bar */
.search-bar-wrap {
  padding: 10px 0 12px;
  border-top: 1px solid var(--color-border);
}

.search-form {
  display: flex;
  align-items: center;
  background: var(--color-bg-alt);
  border: 1.5px solid var(--color-border);
  border-radius: 30px;
  overflow: hidden;
  max-width: 600px;
  margin: 0 auto;
  transition: var(--transition);
}

.search-form:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(192, 57, 43, 0.1);
}

.search-input {
  flex: 1;
  border: none;
  background: transparent;
  padding: 10px 18px;
  font-size: 14px;
  color: var(--color-text);
  font-family: var(--font-main);
  outline: none;
}

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

.search-btn {
  padding: 10px 18px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  transition: var(--transition);
}

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

/* Mobile Nav */
.mobile-nav {
  display: none;
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  padding: 10px 20px;
}

.mobile-nav.open { display: block; }

.mobile-nav ul { display: flex; flex-direction: column; gap: 4px; }

.mobile-nav a {
  display: block;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-weight: 500;
}

.mobile-nav a:hover { background: var(--color-bg-alt); color: var(--color-primary); }

/* =============================================
   Hero Section
   ============================================= */
.hero-section {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(60, 30, 20, 0.72) 0%, rgba(192, 57, 43, 0.45) 60%, rgba(0,0,0,0.2) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  padding: 80px 20px;
  max-width: 700px;
}

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.4);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 13px;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.hero-title {
  font-size: clamp(42px, 7vw, 72px);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 14px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.hero-subtitle {
  font-size: clamp(16px, 2.5vw, 22px);
  font-weight: 500;
  margin-bottom: 16px;
  opacity: 0.95;
}

.hero-desc {
  font-size: 15px;
  opacity: 0.85;
  line-height: 1.8;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-slogan-group {
  border-top: 1px solid rgba(255,255,255,0.25);
  padding-top: 20px;
}

.slogan-item strong {
  display: block;
  font-size: 18px;
  margin-bottom: 4px;
}

.slogan-item span {
  font-size: 14px;
  opacity: 0.8;
}

/* =============================================
   Buttons
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 28px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
  border: 2px solid transparent;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(192, 57, 43, 0.3);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.7);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  color: #fff;
}

/* =============================================
   Section Common
   ============================================= */
section {
  padding: 72px 0;
}

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

.section-tag {
  display: inline-block;
  background: rgba(192, 57, 43, 0.08);
  color: var(--color-primary);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 14px;
  line-height: 1.3;
}

.section-desc {
  font-size: 16px;
  color: var(--color-text-light);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

.update-time {
  text-align: center;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

/* =============================================
   Philosophy Section
   ============================================= */
.philosophy-section {
  background: var(--color-bg-alt);
}

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.philosophy-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--color-border);
}

.philosophy-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.phi-icon {
  font-size: 36px;
  margin-bottom: 14px;
}

.philosophy-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
}

.philosophy-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* =============================================
   Scenes Section
   ============================================= */
.scenes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.scene-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 28px 24px;
  border: 1px solid var(--color-border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.scene-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.scene-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.scene-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.scene-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.scene-card p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.scene-count {
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 600;
  background: rgba(192, 57, 43, 0.08);
  padding: 3px 10px;
  border-radius: 12px;
}

/* =============================================
   Video Grid & Cards
   ============================================= */
.latest-videos {
  background: var(--color-bg-alt);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

.video-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.video-thumb-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: #f0ebe3;
}

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

.video-card:hover .video-thumb {
  transform: scale(1.05);
}

/* Play Overlay - 鼠标移上去显示播放按钮 */
.video-play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0);
  transition: background 0.3s ease;
  opacity: 0;
}

.video-card:hover .video-play-overlay {
  opacity: 1;
  background: rgba(0, 0, 0, 0.35);
}

.play-btn {
  width: 64px;
  height: 64px;
  background: rgba(192, 57, 43, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  cursor: pointer;
  border: 3px solid rgba(255,255,255,0.8);
}

.play-btn:hover {
  background: var(--color-primary);
  transform: scale(1.1);
}

.play-btn svg {
  margin-left: 4px;
}

.video-duration {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.video-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--color-primary);
  color: #fff;
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 4px;
  font-weight: 700;
}

.video-badge.new { background: #27ae60; }
.video-badge.hot { background: var(--color-accent); }

.video-info {
  padding: 18px 20px 20px;
}

.video-info h3,
.video-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-info h3 a,
.video-title a {
  color: var(--color-text);
}

.video-info h3 a:hover,
.video-title a:hover {
  color: var(--color-primary);
}

.video-desc {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 12px;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 10px;
}

.meta-item {
  font-size: 12px;
  color: var(--color-text-muted);
}

.video-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  font-size: 11px;
  background: var(--color-bg-alt);
  color: var(--color-text-light);
  padding: 3px 10px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
}

.view-more-wrap {
  text-align: center;
  margin-top: 40px;
}

/* Video Filter */
.video-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}

.filter-btn {
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  background: #fff;
  color: var(--color-text-light);
  border: 1.5px solid var(--color-border);
  transition: var(--transition);
  cursor: pointer;
}

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

/* =============================================
   Stats Section
   ============================================= */
.stats-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
}

.stats-section .section-title { color: #fff; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}

.stat-card {
  text-align: center;
  padding: 32px 20px;
  background: rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.2);
  transition: var(--transition);
}

.stat-card:hover {
  background: rgba(255,255,255,0.18);
  transform: translateY(-4px);
}

.stat-num {
  font-size: 42px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-num span {
  font-size: 22px;
  font-weight: 600;
}

.stat-label {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
  opacity: 0.95;
}

.stat-desc {
  font-size: 13px;
  opacity: 0.75;
}

.stats-section .update-time {
  color: rgba(255,255,255,0.6);
  border-top-color: rgba(255,255,255,0.2);
}

/* =============================================
   Authors Section
   ============================================= */
.authors-section {
  background: var(--color-bg-alt);
}

.authors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.author-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 32px 28px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.author-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.author-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid var(--color-border);
}

.author-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.author-role {
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 12px;
}

.author-bio {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.author-stats {
  display: flex;
  justify-content: center;
  gap: 20px;
  font-size: 13px;
  color: var(--color-text-muted);
}

.author-stats strong {
  color: var(--color-primary);
  font-weight: 700;
}

/* =============================================
   Media Section
   ============================================= */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.media-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 28px 24px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.media-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.media-logo {
  font-size: 28px;
  margin-bottom: 10px;
}

.media-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.media-card blockquote {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  border-left: 3px solid var(--color-primary);
  padding-left: 14px;
  margin-bottom: 12px;
  font-style: italic;
}

.media-date {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* =============================================
   Reviews Section
   ============================================= */
.reviews-section {
  background: var(--color-bg-alt);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.review-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.review-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.review-stars {
  color: #f39c12;
  font-size: 16px;
  margin-bottom: 10px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 14px;
  font-style: italic;
}

.review-author {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}

.reviewer-name {
  color: var(--color-primary);
  font-weight: 600;
}

.review-date {
  color: var(--color-text-muted);
}

/* =============================================
   FAQ Section
   ============================================= */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  background: #fff;
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  background: #fff;
  cursor: pointer;
  text-align: left;
  gap: 12px;
  transition: var(--transition);
}

.faq-question:hover {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}

.faq-arrow {
  font-size: 12px;
  color: var(--color-text-muted);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-arrow {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding: 0 22px 18px;
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.8;
  border-top: 1px solid var(--color-border);
}

.faq-item.open .faq-answer {
  display: block;
}

/* =============================================
   Join Section
   ============================================= */
.join-section {
  background: var(--color-bg-alt);
}

.join-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.join-content .section-tag { margin-bottom: 12px; }
.join-content .section-title { text-align: left; margin-bottom: 16px; }
.join-content p { color: var(--color-text-light); margin-bottom: 24px; line-height: 1.8; }

.join-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  height: 320px;
  object-fit: cover;
}

/* =============================================
   Social Section
   ============================================= */
.social-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

.social-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 24px 28px;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1.5px solid var(--color-border);
  min-width: 140px;
  text-decoration: none;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.social-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.social-card.wechat:hover { border-color: #07c160; }
.social-card.weibo:hover { border-color: #e6162d; }
.social-card.xiaohongshu:hover { border-color: #fe2c55; }
.social-card.douyin:hover { border-color: #000; }
.social-card.bilibili:hover { border-color: #00a1d6; }

.social-icon { font-size: 32px; }
.social-name { font-size: 14px; font-weight: 700; color: var(--color-text); }
.social-handle { font-size: 12px; color: var(--color-text-muted); }

/* =============================================
   Contact Section
   ============================================= */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.contact-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 28px 22px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.contact-icon {
  font-size: 28px;
  margin-bottom: 12px;
}

.contact-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.contact-card p {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 6px;
}

.contact-card span {
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 500;
  word-break: break-all;
}

/* =============================================
   Page Hero (inner pages)
   ============================================= */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: 48px 0;
}

.page-hero h1 {
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 800;
  margin-bottom: 10px;
}

.page-hero p {
  font-size: 16px;
  opacity: 0.85;
}

.breadcrumb {
  font-size: 13px;
  opacity: 0.75;
  margin-bottom: 12px;
}

.breadcrumb a { color: rgba(255,255,255,0.8); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { margin: 0 6px; }

/* =============================================
   About Page
   ============================================= */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.about-content h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
}

.about-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin: 24px 0 12px;
}

.about-content h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin: 20px 0 10px;
}

.about-content p {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 14px;
}

.about-values {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.about-values li {
  font-size: 14px;
  color: var(--color-text-light);
  padding: 10px 16px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-primary);
}

.about-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  height: 400px;
  object-fit: cover;
}

/* =============================================
   Join Page
   ============================================= */
.join-benefits {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}

.benefit-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 28px 22px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.benefit-icon { font-size: 32px; margin-bottom: 12px; }

.benefit-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.benefit-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

.join-steps {
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-bottom: 40px;
}

.join-steps h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 28px;
  text-align: center;
}

.steps-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.step-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.step-num {
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  flex-shrink: 0;
}

.step-content h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.step-content p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

.join-cta {
  text-align: center;
  padding: 40px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.join-cta h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.join-cta p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 20px;
}

/* =============================================
   Contact Page
   ============================================= */
.contact-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}

.contact-info-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 28px 22px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.contact-info-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.contact-info-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.contact-info-card p {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 6px;
}

.contact-note {
  font-size: 12px !important;
  color: var(--color-text-muted) !important;
  font-style: italic;
}

.contact-note a {
  color: var(--color-primary);
}

.contact-form-wrap {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.contact-form-wrap h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 28px;
}

.contact-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-bg);
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(192, 57, 43, 0.1);
}

.form-group textarea { resize: vertical; min-height: 120px; }

/* =============================================
   Footer
   ============================================= */
.site-footer {
  background: #2c1f1a;
  color: rgba(255,255,255,0.8);
  padding: 48px 0 24px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo .logo-text { color: #fff; }
.footer-logo .logo-icon { font-size: 24px; }

.footer-desc {
  font-size: 13px;
  line-height: 1.8;
  margin: 12px 0 8px;
  opacity: 0.7;
}

.footer-domain {
  font-size: 12px;
  opacity: 0.6;
}

.footer-nav h5 {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-nav a {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}

.footer-nav a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-bottom {
  text-align: center;
  font-size: 13px;
  opacity: 0.55;
  line-height: 1.8;
}

/* =============================================
   Video Page Specific
   ============================================= */
.video-page-section {
  padding: 48px 0;
}

/* =============================================
   Search Modal
   ============================================= */
.search-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 9999;
  align-items: flex-start;
  justify-content: center;
  padding-top: 80px;
}

.search-modal.open {
  display: flex;
}

.search-modal-inner {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 28px;
  width: 90%;
  max-width: 600px;
  box-shadow: var(--shadow-lg);
}

.search-modal-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
}

.search-result-tip {
  font-size: 14px;
  color: var(--color-text-muted);
  text-align: center;
  padding: 20px;
}

/* =============================================
   Responsive
   ============================================= */
@media (max-width: 1024px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
  .join-inner,
  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .mobile-menu-btn { display: block; }

  .hero-content { padding: 60px 20px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }

  .video-grid {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .contact-form .form-row {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .join-steps {
    padding: 24px;
  }

  section {
    padding: 48px 0;
  }
}

@media (max-width: 480px) {
  .hero-title { font-size: 36px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .social-grid { gap: 12px; }
  .social-card { min-width: 110px; padding: 16px 14px; }
}

/* =============================================
   Animations
   ============================================= */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

/* Lazy load placeholder */
img[loading="lazy"] {
  background: var(--color-bg-alt);
}