/* 看片植物视频社区 - 主样式文件 | bdtiyh.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', 'Hiragino Sans GB', sans-serif;
  color: #222;
  background: #f8faf5;
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: #2e7d32; text-decoration: none; transition: color .2s; }
a:hover { color: #1b5e20; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* ================================================ */
/* Variables */
:root {
  --green-dark: #1b5e20;
  --green-main: #2e7d32;
  --green-mid:  #43a047;
  --green-light:#81c784;
  --green-pale: #e8f5e9;
  --accent:     #ff6f00;
  --accent2:    #f9a825;
  --white:      #ffffff;
  --gray-light: #f5f5f5;
  --gray-mid:   #9e9e9e;
  --gray-dark:  #424242;
  --shadow:     0 4px 20px rgba(0,0,0,.12);
  --radius:     12px;
  --radius-sm:  6px;
  --transition: .3s ease;
}

/* ================================================ */
/* Utility */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 70px 0; }
.section-alt { background: var(--green-pale); }
.section-dark { background: var(--green-dark); color: #fff; }
.text-center { text-align: center; }
.text-green { color: var(--green-main); }
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}
.btn-primary {
  background: var(--green-main);
  color: #fff;
  box-shadow: 0 4px 15px rgba(46,125,50,.35);
}
.btn-primary:hover { background: var(--green-dark); color: #fff; transform: translateY(-2px); }
.btn-outline {
  background: transparent;
  color: var(--green-main);
  border: 2px solid var(--green-main);
}
.btn-outline:hover { background: var(--green-main); color: #fff; }
.btn-accent {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 15px rgba(255,111,0,.35);
}
.btn-accent:hover { background: #e65100; color: #fff; transform: translateY(-2px); }
.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--green-dark);
  margin-bottom: 12px;
  position: relative;
}
.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--green-mid);
  border-radius: 2px;
  margin: 10px auto 0;
}
.section-title.left::after { margin-left: 0; }
.section-subtitle {
  color: var(--gray-mid);
  font-size: 1rem;
  margin-bottom: 40px;
}
.tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 50px;
  font-size: .78rem;
  font-weight: 600;
  background: var(--green-pale);
  color: var(--green-main);
  margin: 3px;
}
.tag-video { background: #fff3e0; color: var(--accent); }
.tag-hot { background: #fce4ec; color: #c62828; }
.tag-new { background: #e3f2fd; color: #1565c0; }

/* ================================================ */
/* Header & Navigation */
#site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 15px rgba(0,0,0,.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: 20px;
}
.logo-wrap { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-wrap img { width: 44px; height: 44px; object-fit: contain; }
.logo-text { font-size: 1.5rem; font-weight: 800; color: var(--green-dark); letter-spacing: -0.5px; }
.logo-text span { color: var(--green-mid); }
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: .92rem;
  font-weight: 500;
  color: var(--gray-dark);
  transition: all var(--transition);
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  background: var(--green-pale);
  color: var(--green-main);
}
.nav-cta {
  background: var(--green-main) !important;
  color: #fff !important;
  border-radius: 50px !important;
}
.nav-cta:hover { background: var(--green-dark) !important; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}
.hamburger span { display: block; width: 25px; height: 2px; background: var(--gray-dark); border-radius: 2px; transition: var(--transition); }

/* Search Bar */
.search-bar-wrap {
  background: var(--green-dark);
  padding: 10px 0;
}
.search-bar-inner {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 700px;
  margin: 0 auto;
  padding: 0 20px;
}
.search-bar-inner input {
  flex: 1;
  padding: 10px 18px;
  border-radius: 50px 0 0 50px;
  border: none;
  font-size: .95rem;
  outline: none;
  background: rgba(255,255,255,.15);
  color: #fff;
}
.search-bar-inner input::placeholder { color: rgba(255,255,255,.6); }
.search-bar-inner button {
  padding: 10px 22px;
  border-radius: 0 50px 50px 0;
  border: none;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
}
.search-bar-inner button:hover { background: #e65100; }

/* ================================================ */
/* Hero / Banner */
.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(.55);
  z-index: 0;
}
.hero-content {
  position: relative;
  z-index: 1;
  color: #fff;
  max-width: 700px;
  padding: 60px 20px;
}
.hero-badge {
  display: inline-block;
  padding: 5px 16px;
  background: var(--accent);
  color: #fff;
  border-radius: 50px;
  font-size: .82rem;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: .5px;
}
.hero h1 {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 18px;
  text-shadow: 0 2px 10px rgba(0,0,0,.4);
}
.hero p {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 30px;
  opacity: .92;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 30px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat .num { font-size: 1.8rem; font-weight: 800; color: var(--accent2); }
.hero-stat .label { font-size: .82rem; opacity: .85; }

/* ================================================ */
/* Video Cards */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.video-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
}
.video-card:hover { transform: translateY(-6px); box-shadow: 0 12px 35px rgba(0,0,0,.18); }
.video-thumb {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
  background: #111;
}
.video-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.06); }
.play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
  background: rgba(0,0,0,.35);
}
.video-card:hover .play-btn { opacity: 1; }
.play-btn svg {
  width: 60px;
  height: 60px;
  fill: rgba(255,255,255,.95);
  filter: drop-shadow(0 2px 8px rgba(0,0,0,.5));
  transform: scale(.8);
  transition: transform var(--transition);
}
.video-card:hover .play-btn svg { transform: scale(1); }
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 10px;
  background: rgba(0,0,0,.75);
  color: #fff;
  font-size: .75rem;
  padding: 2px 7px;
  border-radius: 4px;
}
.video-info { padding: 14px 16px 16px; }
.video-title {
  font-size: .95rem;
  font-weight: 600;
  color: #222;
  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: .8rem;
  color: var(--gray-mid);
}
.video-meta span { display: flex; align-items: center; gap: 4px; }
.video-stats {
  display: flex;
  gap: 14px;
  margin-top: 8px;
  font-size: .8rem;
  color: var(--gray-mid);
}
.video-stats span { display: flex; align-items: center; gap: 3px; }

/* ================================================ */
/* Expert Cards */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}
.expert-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  text-align: center;
  transition: transform var(--transition);
}
.expert-card:hover { transform: translateY(-5px); }
.expert-avatar {
  width: 100%;
  height: 220px;
  object-fit: cover;
  object-position: top;
}
.expert-info { padding: 20px; }
.expert-name { font-size: 1.1rem; font-weight: 700; color: var(--green-dark); margin-bottom: 4px; }
.expert-role { font-size: .85rem; color: var(--gray-mid); margin-bottom: 12px; }
.expert-tags { margin-bottom: 14px; }
.expert-btns { display: flex; gap: 10px; justify-content: center; }
.expert-btns a { font-size: .82rem; padding: 7px 16px; }
.expert-awards { font-size: .8rem; color: var(--accent); margin-bottom: 10px; }

/* ================================================ */
/* Community / Features */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}
.feature-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px 22px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform var(--transition);
}
.feature-card:hover { transform: translateY(-4px); }
.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--green-pale);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.8rem;
}
.feature-title { font-size: 1rem; font-weight: 700; color: var(--green-dark); margin-bottom: 8px; }
.feature-desc { font-size: .88rem; color: var(--gray-mid); line-height: 1.6; }

/* ================================================ */
/* Partners */
.partners-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  align-items: center;
}
.partner-item {
  background: #fff;
  border-radius: var(--radius-sm);
  padding: 16px 28px;
  box-shadow: 0 2px 10px rgba(0,0,0,.07);
  font-weight: 700;
  color: var(--gray-dark);
  font-size: .9rem;
  transition: all var(--transition);
  border: 2px solid transparent;
}
.partner-item:hover { border-color: var(--green-light); color: var(--green-main); transform: scale(1.04); }

/* ================================================ */
/* Reviews */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.review-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  position: relative;
}
.review-card::before {
  content: '"';
  position: absolute;
  top: 10px;
  left: 20px;
  font-size: 4rem;
  color: var(--green-pale);
  font-family: Georgia, serif;
  line-height: 1;
}
.review-stars { color: #ffd600; font-size: 1rem; margin-bottom: 10px; }
.review-text { font-size: .9rem; color: var(--gray-dark); line-height: 1.7; margin-bottom: 16px; }
.review-author { display: flex; align-items: center; gap: 10px; }
.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--green-pale);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--green-main);
  font-size: .9rem;
  flex-shrink: 0;
}
.review-name { font-weight: 600; font-size: .88rem; color: #333; }
.review-date { font-size: .78rem; color: var(--gray-mid); }

/* ================================================ */
/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border-radius: var(--radius);
  margin-bottom: 12px;
  box-shadow: 0 2px 10px rgba(0,0,0,.06);
  overflow: hidden;
}
.faq-q {
  padding: 18px 22px;
  font-weight: 600;
  font-size: .95rem;
  color: var(--green-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--transition);
}
.faq-q:hover { background: var(--green-pale); }
.faq-q::after { content: '+'; font-size: 1.4rem; color: var(--green-mid); transition: transform var(--transition); }
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a {
  padding: 0 22px;
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
  font-size: .9rem;
  color: var(--gray-dark);
  line-height: 1.8;
}
.faq-item.open .faq-a { max-height: 300px; padding: 0 22px 18px; }

/* ================================================ */
/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info h3 { font-size: 1.2rem; color: var(--green-dark); margin-bottom: 16px; }
.contact-item { display: flex; gap: 12px; margin-bottom: 14px; align-items: flex-start; }
.contact-icon { font-size: 1.2rem; flex-shrink: 0; margin-top: 2px; }
.contact-text { font-size: .9rem; color: var(--gray-dark); line-height: 1.6; }
.qr-row { display: flex; gap: 24px; flex-wrap: wrap; margin-top: 20px; }
.qr-item { text-align: center; }
.qr-item img { width: 110px; height: 110px; border-radius: 8px; border: 3px solid var(--green-pale); }
.qr-item p { font-size: .78rem; color: var(--gray-mid); margin-top: 6px; }

/* ================================================ */
/* Social Share */
.social-share { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-top: 20px; }
.share-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: 50px;
  font-size: .85rem;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  transition: transform var(--transition), opacity var(--transition);
}
.share-btn:hover { transform: translateY(-2px); opacity: .9; color: #fff; }
.share-wechat { background: #07c160; }
.share-weibo { background: #e6162d; }
.share-douyin { background: #010101; }
.share-bilibili { background: #00a1d6; }

/* ================================================ */
/* How To Join */
.join-steps { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 24px; }
.step-card {
  text-align: center;
  padding: 28px 18px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
}
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--green-main);
  color: #fff;
  font-size: 1.3rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
}
.step-title { font-size: .95rem; font-weight: 700; color: var(--green-dark); margin-bottom: 8px; }
.step-desc { font-size: .85rem; color: var(--gray-mid); line-height: 1.6; }

/* ================================================ */
/* AI Section */
.ai-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.ai-features { display: grid; gap: 16px; }
.ai-feature-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px;
  background: rgba(255,255,255,.1);
  border-radius: var(--radius-sm);
}
.ai-feature-icon { font-size: 1.5rem; flex-shrink: 0; }
.ai-feature-title { font-size: .95rem; font-weight: 700; margin-bottom: 4px; }
.ai-feature-desc { font-size: .85rem; opacity: .85; line-height: 1.6; }

/* ================================================ */
/* Breadcrumb */
.breadcrumb {
  padding: 12px 0;
  font-size: .85rem;
  color: var(--gray-mid);
}
.breadcrumb a { color: var(--green-main); }
.breadcrumb span { margin: 0 6px; }

/* ================================================ */
/* Footer */
#site-footer {
  background: #1a2e1a;
  color: rgba(255,255,255,.8);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand .logo-text { color: #fff; font-size: 1.3rem; }
.footer-brand p { font-size: .88rem; margin-top: 12px; line-height: 1.7; opacity: .75; }
.footer-col h4 { font-size: .95rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: .85rem; color: rgba(255,255,255,.65); transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--green-light); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: .82rem;
  color: rgba(255,255,255,.5);
}
.footer-bottom a { color: rgba(255,255,255,.65); }
.footer-bottom a:hover { color: var(--green-light); }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
  color: rgba(255,255,255,.7);
  transition: background var(--transition);
}
.footer-social a:hover { background: var(--green-mid); color: #fff; }

/* ================================================ */
/* Page Hero (inner pages) */
.page-hero {
  background: linear-gradient(135deg, var(--green-dark) 0%, var(--green-mid) 100%);
  color: #fff;
  padding: 60px 0;
  text-align: center;
}
.page-hero h1 { font-size: 2.2rem; font-weight: 800; margin-bottom: 12px; }
.page-hero p { font-size: 1rem; opacity: .85; }

/* ================================================ */
/* Tabs */
.tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--green-pale); margin-bottom: 30px; flex-wrap: wrap; }
.tab-btn {
  padding: 10px 20px;
  border: none;
  background: none;
  font-size: .9rem;
  font-weight: 600;
  color: var(--gray-mid);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition);
}
.tab-btn.active, .tab-btn:hover { color: var(--green-main); border-bottom-color: var(--green-main); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ================================================ */
/* Responsive */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .ai-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .main-nav { display: none; position: fixed; top: 70px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 20px; box-shadow: 0 10px 30px rgba(0,0,0,.15); z-index: 999; }
  .main-nav.open { display: flex; }
  .hamburger { display: flex; }
  .hero h1 { font-size: 2rem; }
  .section-title { font-size: 1.6rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .hero-stats { gap: 20px; }
  .hero-stat .num { font-size: 1.4rem; }
}
@media (max-width: 480px) {
  .hero h1 { font-size: 1.6rem; }
  .hero p { font-size: .95rem; }
  .hero-btns { flex-direction: column; }
  .video-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .join-steps { grid-template-columns: 1fr; }
}

/* ================================================ */
/* Interference tags (hidden) */
.dy-hidden { display: none !important; visibility: hidden !important; position: absolute !important; left: -9999px !important; top: -9999px !important; width: 0 !important; height: 0 !important; overflow: hidden !important; pointer-events: none !important; }

/* ================================================ */
/* Lazy load */
img[loading="lazy"] { opacity: 0; transition: opacity .4s; }
img.loaded { opacity: 1; }

/* ================================================ */
/* Video modal */
.video-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.85);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}
.video-modal.open { display: flex; }
.video-modal-inner {
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 800px;
  width: 90%;
  position: relative;
}
.video-modal-close {
  position: absolute;
  top: 10px;
  right: 14px;
  font-size: 1.8rem;
  color: #fff;
  cursor: pointer;
  z-index: 1;
  line-height: 1;
}
.video-modal video { width: 100%; display: block; }

/* ================================================ */
/* Scroll to top */
#scroll-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 46px;
  height: 46px;
  background: var(--green-main);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition);
  z-index: 500;
  box-shadow: 0 4px 15px rgba(46,125,50,.4);
}
#scroll-top.visible { opacity: 1; transform: translateY(0); }
#scroll-top:hover { background: var(--green-dark); }

/* ================================================ */
/* Announcement bar */
.announce-bar {
  background: var(--green-mid);
  color: #fff;
  text-align: center;
  padding: 8px 20px;
  font-size: .85rem;
  font-weight: 500;
}
.announce-bar a { color: var(--accent2); font-weight: 700; }

/* ================================================ */
/* Stats bar */
.stats-bar {
  background: var(--green-dark);
  color: #fff;
  padding: 20px 0;
}
.stats-row {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 16px;
}
.stat-item { text-align: center; }
.stat-num { font-size: 1.8rem; font-weight: 800; color: var(--accent2); }
.stat-label { font-size: .8rem; opacity: .8; margin-top: 2px; }

/* ================================================ */
/* EEAT Banner */
.eeat-banner {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  padding: 16px 0;
}
.eeat-item {
  background: #fff;
  border: 1px solid #c8e6c9;
  border-radius: 50px;
  padding: 8px 18px;
  font-size: .85rem;
  color: #2e7d32;
  box-shadow: 0 2px 8px rgba(46,125,50,.08);
}

/* ================================================ */
/* Page Hero Extended */
.page-hero-title { font-size: 2.4rem; font-weight: 800; margin-bottom: 14px; }
.page-hero-desc { font-size: 1.05rem; opacity: .9; margin-bottom: 20px; max-width: 700px; margin-left: auto; margin-right: auto; }
.page-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-top: 16px;
}
.page-hero-stats span {
  background: rgba(255,255,255,.18);
  border-radius: 50px;
  padding: 6px 16px;
  font-size: .85rem;
  font-weight: 600;
}

/* ================================================ */
/* Breadcrumb */
.breadcrumb-nav { background: #f1f8e9; border-bottom: 1px solid #c8e6c9; padding: 10px 0; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font-size: .85rem; color: #666; }
.breadcrumb li:not(:last-child)::after { content: ' › '; margin-left: 6px; color: #aaa; }
.breadcrumb a { color: #2e7d32; }

/* ================================================ */
/* Expert Grid Extended */
.expert-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(480px, 1fr)); gap: 30px; }
.expert-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 30px;
  display: flex;
  gap: 24px;
  transition: transform var(--transition);
}
.expert-card:hover { transform: translateY(-4px); }
.expert-avatar { flex-shrink: 0; text-align: center; }
.expert-avatar img { width: 120px; height: 120px; border-radius: 50%; object-fit: cover; border: 4px solid #c8e6c9; margin-bottom: 8px; }
.expert-badge { background: #2e7d32; color: #fff; border-radius: 50px; padding: 4px 12px; font-size: .75rem; font-weight: 700; }
.expert-info h3 { font-size: 1.3rem; font-weight: 800; color: #1b5e20; margin-bottom: 4px; }
.expert-title { color: #43a047; font-size: .9rem; font-weight: 600; margin-bottom: 6px; }
.expert-org { font-size: .8rem; color: #666; margin-bottom: 10px; }
.expert-bio { font-size: .9rem; color: #444; line-height: 1.7; margin-bottom: 12px; }
.expert-awards h4, .expert-videos h4 { font-size: .85rem; font-weight: 700; color: #1b5e20; margin-bottom: 8px; }
.expert-awards ul { padding: 0; }
.expert-awards li { font-size: .82rem; color: #555; padding: 3px 0; }
.expert-video-list { display: flex; flex-direction: column; gap: 8px; }
.expert-video-item { display: flex; gap: 10px; align-items: center; font-size: .82rem; color: #444; }
.expert-video-item img { border-radius: 4px; flex-shrink: 0; }
.expert-video-item span { flex: 1; }

/* ================================================ */
/* Process Grid */
.process-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 20px; }
.process-item { background: #fff; border-radius: var(--radius); padding: 24px; text-align: center; box-shadow: 0 2px 12px rgba(0,0,0,.07); }
.process-num { font-size: 2rem; font-weight: 900; color: #c8e6c9; margin-bottom: 10px; }
.process-item h4 { font-size: .95rem; font-weight: 700; color: #1b5e20; margin-bottom: 8px; }
.process-item p { font-size: .82rem; color: #666; line-height: 1.6; }

/* ================================================ */
/* Community Layout */
.community-layout { display: grid; grid-template-columns: 1fr 320px; gap: 30px; align-items: start; }
.community-main {}
.community-sidebar {}
.topic-list { display: flex; flex-direction: column; gap: 16px; }
.topic-card { background: #fff; border-radius: var(--radius); padding: 20px; box-shadow: 0 2px 12px rgba(0,0,0,.07); display: flex; gap: 16px; transition: transform var(--transition); }
.topic-card:hover { transform: translateY(-2px); }
.topic-icon { font-size: 2rem; flex-shrink: 0; }
.topic-title { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.topic-title a { color: #1b5e20; }
.topic-title a:hover { color: #43a047; }
.topic-excerpt { font-size: .85rem; color: #666; margin-bottom: 8px; line-height: 1.6; }
.topic-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 8px; }
.tag { background: #e8f5e9; color: #2e7d32; border-radius: 50px; padding: 2px 10px; font-size: .75rem; font-weight: 600; }
.topic-meta { display: flex; gap: 14px; font-size: .78rem; color: #999; flex-wrap: wrap; }

/* ================================================ */
/* Sidebar */
.sidebar-card { background: #fff; border-radius: var(--radius); padding: 20px; box-shadow: 0 2px 12px rgba(0,0,0,.07); margin-bottom: 20px; }
.sidebar-card h3 { font-size: 1rem; font-weight: 700; color: #1b5e20; margin-bottom: 14px; border-bottom: 2px solid #e8f5e9; padding-bottom: 8px; }
.sidebar-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.sidebar-video-list { display: flex; flex-direction: column; gap: 12px; }
.sidebar-video-item { display: flex; gap: 10px; align-items: center; font-size: .82rem; color: #444; }
.sidebar-video-item img { border-radius: 4px; flex-shrink: 0; }
.sidebar-video-item p { font-weight: 600; color: #1b5e20; margin-bottom: 2px; }
.sidebar-video-item span { color: #666; font-size: .75rem; }
.sidebar-kw { display: flex; flex-wrap: wrap; gap: 6px; }
.kw-tag { background: #e8f5e9; color: #2e7d32; border-radius: 50px; padding: 4px 12px; font-size: .78rem; font-weight: 600; transition: background var(--transition); }
.kw-tag:hover { background: #2e7d32; color: #fff; }

/* ================================================ */
/* About Layout */
.about-layout { display: grid; grid-template-columns: 1fr 300px; gap: 40px; align-items: start; }
.about-main h2 { font-size: 1.8rem; font-weight: 800; color: #1b5e20; margin-bottom: 16px; }
.about-main h3 { font-size: 1.3rem; font-weight: 700; color: #2e7d32; margin: 28px 0 12px; }
.about-main p { font-size: .95rem; color: #444; line-height: 1.8; margin-bottom: 14px; }
.about-sidebar {}
.timeline { margin-top: 20px; }
.timeline-item { display: flex; gap: 20px; margin-bottom: 24px; }
.timeline-year { background: #2e7d32; color: #fff; border-radius: 8px; padding: 6px 12px; font-size: .9rem; font-weight: 800; flex-shrink: 0; height: fit-content; }
.timeline-content h4 { font-size: .95rem; font-weight: 700; color: #1b5e20; margin-bottom: 4px; }
.timeline-content p { font-size: .85rem; color: #666; line-height: 1.6; }

/* ================================================ */
/* Contact Layout */
.contact-layout { display: grid; grid-template-columns: 1fr 360px; gap: 40px; align-items: start; }
.contact-main h2 { font-size: 1.8rem; font-weight: 800; color: #1b5e20; margin-bottom: 24px; }
.contact-main h3 { font-size: 1.3rem; font-weight: 700; color: #2e7d32; margin: 28px 0 16px; }
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.contact-card { background: #f1f8e9; border-radius: var(--radius); padding: 24px; text-align: center; }
.contact-icon { font-size: 2rem; margin-bottom: 10px; }
.contact-card h3 { font-size: 1rem; font-weight: 700; color: #1b5e20; margin-bottom: 6px; }
.contact-card p { font-size: .9rem; color: #444; }
.collab-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.collab-item { background: #f9fbe7; border-radius: var(--radius); padding: 20px; }
.collab-item h4 { font-size: .95rem; font-weight: 700; color: #1b5e20; margin-bottom: 8px; }
.collab-item p { font-size: .85rem; color: #666; line-height: 1.6; }
.contact-form {}
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: .85rem; font-weight: 600; color: #444; margin-bottom: 6px; }
.form-input { width: 100%; padding: 10px 14px; border: 1px solid #c8e6c9; border-radius: 8px; font-size: .9rem; color: #333; background: #fff; transition: border-color var(--transition); }
.form-input:focus { outline: none; border-color: #2e7d32; box-shadow: 0 0 0 3px rgba(46,125,50,.12); }

/* ================================================ */
/* Join Benefits */
.join-benefits { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.benefit-card { background: #fff; border-radius: var(--radius); padding: 28px; text-align: center; box-shadow: 0 2px 12px rgba(0,0,0,.07); transition: transform var(--transition); }
.benefit-card:hover { transform: translateY(-4px); }
.benefit-icon { font-size: 2.5rem; margin-bottom: 14px; }
.benefit-card h3 { font-size: 1rem; font-weight: 700; color: #1b5e20; margin-bottom: 10px; }
.benefit-card p { font-size: .85rem; color: #666; line-height: 1.7; }

/* ================================================ */
/* AI Grid Extended */
.ai-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.ai-card { background: #fff; border-radius: var(--radius); padding: 28px; box-shadow: 0 2px 12px rgba(0,0,0,.07); transition: transform var(--transition); }
.ai-card:hover { transform: translateY(-4px); }
.ai-icon { font-size: 2.5rem; margin-bottom: 14px; }
.ai-card h3 { font-size: 1rem; font-weight: 700; color: #1b5e20; margin-bottom: 10px; }
.ai-card p { font-size: .85rem; color: #666; line-height: 1.7; margin-bottom: 14px; }
.ai-stats { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.ai-stats span { background: #e8f5e9; color: #2e7d32; border-radius: 50px; padding: 3px 10px; font-size: .75rem; font-weight: 600; }

/* ================================================ */
/* KW Section */
.kw-section { padding: 30px 0; background: #f9fbe7; }
.kw-section-title { font-size: .85rem; font-weight: 700; color: #999; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 14px; }
.kw-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.kw-item { background: #e8f5e9; color: #2e7d32; border-radius: 50px; padding: 5px 14px; font-size: .82rem; font-weight: 600; transition: background var(--transition); }
.kw-item:hover { background: #2e7d32; color: #fff; }

/* ================================================ */
/* Search Title */
.search-title { font-size: 1.6rem; font-weight: 800; color: #1b5e20; margin-bottom: 20px; }

/* ================================================ */
/* Video Badge */
.video-badge-new {
  position: absolute;
  top: 8px;
  left: 8px;
  background: #ff6f00;
  color: #fff;
  border-radius: 4px;
  padding: 2px 8px;
  font-size: .72rem;
  font-weight: 700;
  z-index: 2;
}

/* ================================================ */
/* Responsive additions */
@media (max-width: 1024px) {
  .community-layout { grid-template-columns: 1fr; }
  .about-layout { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .join-benefits { grid-template-columns: repeat(2, 1fr); }
  .ai-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .page-hero-title { font-size: 1.8rem; }
  .page-hero-desc { font-size: .95rem; }
  .contact-grid { grid-template-columns: 1fr; }
  .collab-grid { grid-template-columns: 1fr; }
  .join-benefits { grid-template-columns: 1fr; }
  .ai-grid { grid-template-columns: 1fr; }
  .expert-card { flex-direction: column; }
  .eeat-banner { flex-direction: column; align-items: center; }
  .process-grid { grid-template-columns: 1fr; }
  .sidebar-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .page-hero-title { font-size: 1.5rem; }
  .page-hero-stats { flex-direction: column; align-items: center; }
  .timeline-item { flex-direction: column; gap: 8px; }
}

/* ================================================ */
/* Video Modal Title */
.video-modal-title {
  color: #fff;
  font-size: .95rem;
  font-weight: 600;
  padding: 10px 14px;
  background: rgba(0,0,0,.6);
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}