@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&family=ZCOOL+XiaoWei&display=swap');

:root {
  --primary: #4a7c2e;
  --primary-dark: #1b5e20;
  --primary-light: #8bc34a;
  --bg-light: #f1f8e9;
  --bg-white: #ffffff;
  --text-dark: #1b5e20;
  --text-muted: #558b2f;
  --accent: #c5e1a5;
  --border: #dcedc8;
  --shadow: 0 4px 16px rgba(27, 94, 32, 0.12);
  --shadow-hover: 0 8px 32px rgba(27, 94, 32, 0.2);
  --radius: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-light);
  color: var(--text-dark);
  line-height: 1.7;
  font-size: 16px;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'ZCOOL XiaoWei', 'Noto Sans SC', serif;
  color: var(--primary-dark);
  line-height: 1.3;
  font-weight: 700;
}

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

a:hover {
  color: var(--primary-light);
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ============ Header ============ */
.site-header {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 12px rgba(27, 94, 32, 0.2);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 22px;
  font-weight: 700;
}

.logo-icon {
  font-size: 32px;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.logo-text {
  letter-spacing: 2px;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 8px;
}

.main-nav a {
  color: rgba(255, 255, 255, 0.9);
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.main-nav a:hover,
.main-nav a.active {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--primary-light);
  border-radius: 2px;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 28px;
  cursor: pointer;
}

/* ============ Hero / Banner ============ */
.hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
  color: #fff;
  padding: 80px 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '🍄🌿🍃🌱🌾';
  position: absolute;
  font-size: 60px;
  opacity: 0.15;
  top: 20px;
  left: 30px;
  letter-spacing: 40px;
  pointer-events: none;
}

.hero::after {
  content: '🌳🍄🌿🍂🌲';
  position: absolute;
  font-size: 50px;
  opacity: 0.15;
  bottom: 20px;
  right: 30px;
  letter-spacing: 30px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 48px;
  color: #fff;
  margin-bottom: 16px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.hero p {
  font-size: 18px;
  opacity: 0.95;
  margin-bottom: 28px;
  line-height: 1.8;
}

.hero-btn {
  display: inline-block;
  background: #fff;
  color: var(--primary-dark);
  padding: 14px 40px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 16px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  transition: var(--transition);
}

.hero-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.25);
  color: var(--primary);
}

/* ============ Section Common ============ */
.section {
  padding: 60px 20px;
}

.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-header h2 {
  font-size: 32px;
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-header h2::before {
  content: '🍄';
  margin-right: 10px;
}

.section-header p {
  color: var(--text-muted);
  font-size: 16px;
}

/* ============ Video Grid ============ */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

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

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-light);
}

.video-thumb {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  overflow: hidden;
  background: linear-gradient(135deg, var(--accent), var(--bg-light));
}

.video-thumb img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  background: rgba(27, 94, 32, 0.85);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 24px;
  opacity: 0;
  transition: var(--transition);
  backdrop-filter: blur(4px);
}

.video-card:hover .video-play {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.1);
}

.video-duration {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 500;
}

.video-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
}

.video-info {
  padding: 18px;
}

.video-info h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--primary-dark);
  line-height: 1.4;
}

.video-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}

.video-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.video-desc {
  font-size: 14px;
  color: #555;
  margin-top: 10px;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============ Category Cards ============ */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-bottom: 20px;
}

.category-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 2px solid transparent;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
  opacity: 0;
  transition: var(--transition);
}

.category-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-light);
  box-shadow: var(--shadow-hover);
}

.category-card:hover::before {
  opacity: 0.5;
}

.category-icon {
  font-size: 48px;
  margin-bottom: 16px;
  display: block;
  position: relative;
  z-index: 1;
}

.category-card h3 {
  font-size: 20px;
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}

.category-card p {
  color: var(--text-muted);
  font-size: 14px;
  position: relative;
  z-index: 1;
}

.category-count {
  display: inline-block;
  margin-top: 12px;
  background: var(--bg-light);
  color: var(--primary);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  position: relative;
  z-index: 1;
}

/* ============ Filter Tabs ============ */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 36px;
}

.filter-tab {
  background: var(--bg-white);
  color: var(--primary);
  border: 2px solid var(--border);
  padding: 10px 24px;
  border-radius: 30px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  font-family: inherit;
}

.filter-tab:hover {
  background: var(--accent);
  border-color: var(--primary-light);
}

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

/* ============ Ranking List ============ */
.ranking-list {
  list-style: none;
  counter-reset: ranking;
}

.ranking-item {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--bg-white);
  padding: 20px 24px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  counter-increment: ranking;
  border-left: 4px solid transparent;
}

.ranking-item:nth-child(1) {
  border-left-color: #ffd700;
  background: linear-gradient(90deg, #fffde7 0%, var(--bg-white) 100%);
}

.ranking-item:nth-child(2) {
  border-left-color: #c0c0c0;
  background: linear-gradient(90deg, #fafafa 0%, var(--bg-white) 100%);
}

.ranking-item:nth-child(3) {
  border-left-color: #cd7f32;
  background: linear-gradient(90deg, #fff8e1 0%, var(--bg-white) 100%);
}

.ranking-item:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-hover);
}

.ranking-num {
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 36px;
  font-weight: 900;
  color: var(--primary-light);
  min-width: 60px;
  text-align: center;
}

.ranking-item:nth-child(1) .ranking-num { color: #ffd700; }
.ranking-item:nth-child(2) .ranking-num { color: #b0bec5; }
.ranking-item:nth-child(3) .ranking-num { color: #cd7f32; }

.ranking-info {
  flex: 1;
}

.ranking-info h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.ranking-info p {
  color: var(--text-muted);
  font-size: 14px;
}

.ranking-stats {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.ranking-stats span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ============ Two Column Layout ============ */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

/* ============ Info Cards ============ */
.info-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  border-top: 4px solid var(--primary-light);
  margin-bottom: 24px;
}

.info-card h3 {
  font-size: 22px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.info-card h3::before {
  content: '🍄';
}

.info-card p {
  color: #555;
  line-height: 1.8;
  margin-bottom: 12px;
}

.feature-list {
  list-style: none;
}

.feature-list li {
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.feature-list li:last-child {
  border-bottom: none;
}

.feature-list li::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  font-size: 12px;
  flex-shrink: 0;
}

/* ============ Contact Form ============ */
.contact-form {
  background: var(--bg-white);
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--primary-dark);
  font-size: 14px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  transition: var(--transition);
  background: var(--bg-light);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-light);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(139, 195, 74, 0.2);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  border: none;
  padding: 14px 40px;
  border-radius: 50px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
  box-shadow: 0 4px 14px rgba(74, 124, 46, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(74, 124, 46, 0.4);
}

/* ============ Contact Info Grid ============ */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.contact-item {
  background: var(--bg-white);
  padding: 28px;
  border-radius: var(--radius);
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.contact-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.contact-item .icon {
  font-size: 42px;
  margin-bottom: 12px;
}

.contact-item h4 {
  font-size: 18px;
  margin-bottom: 8px;
}

.contact-item p {
  color: var(--text-muted);
  font-size: 14px;
}

/* ============ Footer ============ */
.site-footer {
  background: linear-gradient(180deg, var(--primary-dark) 0%, #0d3311 100%);
  color: rgba(255, 255, 255, 0.85);
  padding: 60px 20px 30px;
  margin-top: 60px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.footer-col h4 {
  color: #fff;
  font-size: 17px;
  margin-bottom: 20px;
  font-family: 'ZCOOL XiaoWei', serif;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--primary-light);
  border-radius: 2px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
  transition: var(--transition);
}

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

.footer-col p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 12px;
}

.footer-emoji {
  font-size: 24px;
  margin-right: 8px;
}

.social-links {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.social-links a {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: var(--transition);
}

.social-links a:hover {
  background: var(--primary-light);
  transform: translateY(-3px);
}

.footer-bottom {
  max-width: 1200px;
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
}

/* ============ About Page ============ */
.about-hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  padding: 60px 20px;
  text-align: center;
}

.about-hero h1 {
  color: #fff;
  font-size: 40px;
  margin-bottom: 12px;
}

.about-hero p {
  font-size: 17px;
  opacity: 0.95;
  max-width: 700px;
  margin: 0 auto;
}

.timeline {
  position: relative;
  padding-left: 40px;
  margin: 30px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--primary-light);
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  margin-bottom: 30px;
  background: var(--bg-white);
  padding: 20px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.timeline-item::before {
  content: '🍄';
  position: absolute;
  left: -32px;
  top: 20px;
  font-size: 20px;
  width: 32px;
  height: 32px;
  background: var(--bg-light);
  border: 3px solid var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.timeline-year {
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 22px;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 8px;
}

.timeline-item h4 {
  font-size: 18px;
  margin-bottom: 6px;
}

.timeline-item p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  margin-top: 30px;
}

.team-member {
  text-align: center;
  background: var(--bg-white);
  padding: 28px 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.team-member:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.team-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--primary-light));
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
}

.team-member h4 {
  font-size: 18px;
  margin-bottom: 4px;
}

.team-role {
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 10px;
}

.team-desc {
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.6;
}

/* ============ Responsive ============ */
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .two-col {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .hero h1 {
    font-size: 36px;
  }

  .section {
    padding: 40px 16px;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .main-nav {
    position: fixed;
    top: 65px;
    left: 0;
    right: 0;
    background: var(--primary-dark);
    padding: 20px;
    transform: translateY(-120%);
    transition: transform 0.3s ease;
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
  }

  .main-nav.open {
    transform: translateY(0);
  }

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

  .main-nav a {
    display: block;
    padding: 12px 16px;
    border-radius: 8px;
  }

  .main-nav a.active::after {
    display: none;
  }

  .hero {
    padding: 60px 20px;
  }

  .hero h1 {
    font-size: 30px;
  }

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

  .section-header h2 {
    font-size: 26px;
  }

  .video-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .category-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
    padding: 0 20px;
  }

  .ranking-item {
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
  }

  .ranking-stats {
    flex-wrap: wrap;
  }

  .contact-form {
    padding: 24px;
  }

  .header-inner {
    padding: 12px 16px;
  }

  .logo-text {
    font-size: 18px;
  }

  .logo-icon {
    font-size: 26px;
  }

  .filter-bar {
    gap: 8px;
  }

  .filter-tab {
    padding: 8px 18px;
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 26px;
  }

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

  .section-header h2 {
    font-size: 22px;
  }

  .info-card {
    padding: 24px 20px;
  }
}