/* 抖阴 - 植物视频社区 | y23h0w.cn */
/* 完全原创绿色自然主题 */

:root {
  --primary: #2d7a3a;
  --primary-light: #4caf50;
  --primary-dark: #1b5e20;
  --accent: #8bc34a;
  --accent2: #ff8f00;
  --bg-dark: #0d1f0f;
  --bg-card: #132b15;
  --bg-section: #0a1a0b;
  --text-main: #e8f5e9;
  --text-muted: #a5d6a7;
  --text-dim: #81c784;
  --border: rgba(76,175,80,0.2);
  --glow: 0 0 20px rgba(76,175,80,0.25);
  --shadow: 0 4px 24px rgba(0,0,0,0.5);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

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

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

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

/* ===== HEADER ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13,31,15,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 20px rgba(0,0,0,0.4);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 20px;
}

.logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-wrap img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: cover;
}

.logo-text {
  font-size: 1.4rem;
  font-weight: 800;
  background: linear-gradient(135deg, #4caf50, #8bc34a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.main-nav a {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 6px;
  white-space: nowrap;
  transition: var(--transition);
}

.main-nav a:hover, .main-nav a.active {
  color: var(--primary-light);
  background: rgba(76,175,80,0.12);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== SEARCH BAR ROW ===== */
.search-bar-row {
  background: rgba(19,43,21,0.95);
  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-wrap {
  display: flex;
  align-items: center;
  flex: 1;
  max-width: 600px;
  background: rgba(45,122,58,0.15);
  border: 1px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  transition: var(--transition);
}

.search-wrap:focus-within {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(76,175,80,0.15);
}

.search-wrap input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  padding: 9px 16px;
  color: var(--text-main);
  font-size: 0.9rem;
}

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

.search-btn {
  background: var(--primary);
  border: none;
  cursor: pointer;
  padding: 9px 18px;
  color: #fff;
  font-size: 0.9rem;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

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

.search-hot-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.search-hot-label {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.search-tag {
  font-size: 0.78rem;
  padding: 3px 10px;
  border-radius: 12px;
  background: rgba(76,175,80,0.1);
  border: 1px solid rgba(76,175,80,0.2);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.search-tag:hover {
  background: rgba(76,175,80,0.25);
  color: var(--primary-light);
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  background: rgba(13,31,15,0.8);
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
}

.breadcrumb-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  font-size: 0.82rem;
  color: var(--text-dim);
}

.bc-link { color: var(--text-dim); }
.bc-link:hover { color: var(--primary-light); }
.bc-sep { margin: 0 6px; color: var(--border); }
.bc-current { color: var(--text-muted); }

/* ===== NOTICE BAR ===== */
.notice-bar {
  background: linear-gradient(90deg, var(--primary-dark), #1a3d1c, var(--primary-dark));
  padding: 8px 0;
  overflow: hidden;
}

.notice-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
}

.notice-label {
  background: var(--accent2);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 700;
  flex-shrink: 0;
  font-size: 0.75rem;
}

.notice-inner span { color: var(--text-muted); }

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

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(0.45) saturate(1.2);
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,31,15,0.85) 0%, rgba(45,122,58,0.3) 50%, rgba(13,31,15,0.9) 100%);
  z-index: 1;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(76,175,80,0.15);
  border: 1px solid rgba(76,175,80,0.3);
  color: var(--accent);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #ffffff, #a5d6a7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero h2 {
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  font-weight: 400;
  color: var(--text-muted);
  margin-bottom: 28px;
  max-width: 600px;
}

.hero-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

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

.stat-item { text-align: left; }

.stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 4px;
}

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(45,122,58,0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(45,122,58,0.5);
  color: #fff;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--primary-light);
  padding: 11px 26px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid var(--primary-light);
  cursor: pointer;
  transition: var(--transition);
}

.btn-outline:hover {
  background: rgba(76,175,80,0.1);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 7px 16px;
  font-size: 0.82rem;
  border-radius: 6px;
}

.btn-sm-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  padding: 7px 16px;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-sm-outline {
  background: transparent;
  color: var(--primary-light);
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid var(--primary-light);
  cursor: pointer;
  transition: var(--transition);
}

/* ===== SECTIONS ===== */
.section {
  padding: 72px 0;
}

.section-full {
  padding: 72px 0;
  background: var(--bg-section);
}

.section-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.section-tag {
  display: inline-block;
  background: rgba(76,175,80,0.12);
  border: 1px solid rgba(76,175,80,0.25);
  color: var(--accent);
  padding: 4px 14px;
  border-radius: 16px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 12px;
}

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

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--glow);
  border-color: rgba(76,175,80,0.4);
}

.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #0a1a0b;
}

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

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

.play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  opacity: 0;
  transition: var(--transition);
}

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

.play-icon {
  width: 52px;
  height: 52px;
  background: rgba(76,175,80,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(76,175,80,0.5);
  transform: scale(0.85);
  transition: var(--transition);
}

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

.play-icon::after {
  content: '';
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 4px;
}

.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 0.75rem;
  padding: 2px 7px;
  border-radius: 4px;
  font-weight: 600;
}

.video-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 700;
}

.video-info {
  padding: 14px;
}

.video-title {
  font-size: 0.92rem;
  font-weight: 700;
  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;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--text-dim);
}

.video-date { margin-left: auto; }

/* ===== FEATURE GRID ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(76,175,80,0.4);
  box-shadow: var(--glow);
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(45,122,58,0.3), rgba(76,175,80,0.15));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.6rem;
}

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

.feature-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===== EXPERT GRID ===== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.expert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: var(--transition);
  text-align: center;
}

.expert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--glow);
  border-color: rgba(76,175,80,0.4);
}

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

.expert-name {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 4px;
}

.expert-role {
  font-size: 0.82rem;
  color: var(--accent);
  margin-bottom: 10px;
  font-weight: 600;
}

.expert-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 14px;
}

.expert-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-bottom: 14px;
}

.expert-tags span {
  font-size: 0.72rem;
  padding: 3px 9px;
  background: rgba(76,175,80,0.1);
  border: 1px solid rgba(76,175,80,0.2);
  border-radius: 10px;
  color: var(--text-muted);
}

.expert-social {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 14px;
}

.expert-social a {
  font-size: 0.78rem;
  color: var(--text-dim);
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: var(--transition);
}

.expert-social a:hover {
  color: var(--primary-light);
  border-color: var(--primary-light);
}

.expert-btns {
  display: flex;
  gap: 8px;
  justify-content: center;
}

/* ===== REVIEW GRID ===== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}

.review-card:hover {
  border-color: rgba(76,175,80,0.3);
  box-shadow: var(--glow);
}

.review-stars {
  color: #ffd54f;
  font-size: 0.9rem;
  margin-bottom: 10px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
  font-style: italic;
}

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

.review-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
  color: #fff;
  flex-shrink: 0;
}

.review-info strong {
  display: block;
  font-size: 0.88rem;
  color: var(--text-main);
}

.review-info span {
  font-size: 0.75rem;
  color: var(--text-dim);
}

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

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

.faq-item.open { border-color: rgba(76,175,80,0.4); }

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  gap: 12px;
  user-select: none;
}

.faq-q:hover { color: var(--primary-light); }

.faq-arrow {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(76,175,80,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
  font-size: 0.7rem;
  color: var(--accent);
}

.faq-item.open .faq-arrow { transform: rotate(180deg); background: rgba(76,175,80,0.3); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-item.open .faq-a { max-height: 300px; }

.faq-a-inner {
  padding: 0 20px 16px;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ===== PARTNER GRID ===== */
.partner-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}

.partner-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 24px;
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 600;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.partner-item:hover {
  border-color: rgba(76,175,80,0.4);
  color: var(--primary-light);
}

/* ===== HOWTO STEPS ===== */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.howto-step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  position: relative;
}

.step-num {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
  color: #fff;
  margin: 0 auto 12px;
}

.howto-step h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.howto-step p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
}

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

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
}

.contact-card:hover {
  border-color: rgba(76,175,80,0.4);
  box-shadow: var(--glow);
}

.contact-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

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

.contact-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.qr-img {
  width: 100px;
  height: 100px;
  margin: 12px auto 0;
  border-radius: 8px;
  border: 2px solid var(--border);
}

/* ===== MCP SECTION ===== */
.mcp-section {
  background: linear-gradient(135deg, rgba(19,43,21,0.8), rgba(27,94,32,0.4));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  margin: 40px 0;
}

.mcp-inner { max-width: 900px; margin: 0 auto; }

.mcp-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.mcp-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

.mcp-card {
  background: rgba(45,122,58,0.12);
  border: 1px solid rgba(76,175,80,0.15);
  border-radius: var(--radius-sm);
  padding: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
}

.mcp-card:hover {
  background: rgba(45,122,58,0.2);
  border-color: rgba(76,175,80,0.3);
}

.mcp-card-icon { font-size: 1.2rem; }

.mcp-card-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main);
}

.mcp-card-status {
  font-size: 0.7rem;
  color: var(--accent);
}

.mcp-footer-note {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 16px;
  text-align: center;
}

/* ===== SHARE BAR ===== */
.share-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 16px 0;
  border-top: 1px solid var(--border);
  margin-top: 16px;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.share-btn:hover { border-color: var(--primary-light); color: var(--primary-light); }

/* ===== TAB NAV ===== */
.tab-nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
}

.tab-btn {
  padding: 8px 20px;
  border-radius: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn:hover, .tab-btn.active {
  color: var(--primary-light);
  background: rgba(76,175,80,0.1);
  border-color: rgba(76,175,80,0.25);
}

/* ===== FOOTER ===== */
.site-footer {
  background: rgba(7,14,8,0.98);
  border-top: 1px solid var(--border);
  padding: 56px 0 0;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.footer-brand .logo-text {
  font-size: 1.3rem;
  margin-bottom: 12px;
  display: block;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 16px;
}

.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 14px;
}

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

.footer-links a {
  font-size: 0.83rem;
  color: var(--text-dim);
  transition: var(--transition);
}

.footer-links a:hover { color: var(--primary-light); padding-left: 4px; }

.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;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.footer-logo-bottom {
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-logo-bottom img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

/* ===== EEAT UPDATE BAR ===== */
.eeat-bar {
  background: rgba(19,43,21,0.7);
  border-bottom: 1px solid var(--border);
  padding: 6px 0;
  font-size: 0.78rem;
  color: var(--text-dim);
  text-align: center;
}

/* ===== VIDEO MODAL ===== */
.video-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.9);
  align-items: center;
  justify-content: center;
}

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

.modal-inner {
  position: relative;
  width: 90%;
  max-width: 900px;
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  background: rgba(0,0,0,0.6);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 1.1rem;
  cursor: pointer;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

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

.modal-video-wrap {
  aspect-ratio: 16/9;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-video-placeholder {
  text-align: center;
  color: var(--text-muted);
  padding: 40px;
}

.modal-video-placeholder .big-play {
  width: 80px;
  height: 80px;
  background: rgba(76,175,80,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 2rem;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .header-inner { padding: 0 16px; }
  .main-nav { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: rgba(13,31,15,0.98); padding: 16px; border-bottom: 1px solid var(--border); gap: 4px; }
  .main-nav.open { display: flex; }
  .menu-toggle { display: flex; }
  .hero { min-height: 420px; }
  .hero-content { padding: 48px 16px; }
  .hero-stats { gap: 20px; }
  .section, .section-full { padding: 48px 0; }
  .section-inner { padding: 0 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .search-bar-inner { padding: 0 16px; }
  .search-hot-tags { display: none; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .expert-grid { grid-template-columns: 1fr; }
  .howto-steps { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.8rem; }
  .hero-btns { flex-direction: column; }
  .video-grid { grid-template-columns: 1fr; }
  .howto-steps { grid-template-columns: 1fr; }
  .mcp-cards { grid-template-columns: 1fr 1fr; }
}