@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

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

:root {
  --lime: #C6F221;
  --lime-light: #D4E157;
  --lime-bg: #EAFB8F;
  --lime-pale: #F4FBCF;
  --green-dark: #3A5A00;
  --green-mid: #5C8A1E;
  --text-primary: #1A1A1A;
  --text-secondary: #555;
  --text-muted: #888;
  --bg-white: #FFFFFF;
  --bg-light: #FAFAFA;
  --bg-hero: #E8F5A3;
  --border: #E8E8E8;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-hover: 0 4px 16px rgba(0,0,0,0.08);
  --max-width: 1080px;
  --header-h: 64px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text-primary);
  background: var(--bg-white);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s;
}

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

ul, ol {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: var(--header-h);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header-logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.header-logo .logo-accent {
  color: var(--green-mid);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.header-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 4px 0;
  position: relative;
}

.header-nav a:hover,
.header-nav a.active {
  color: var(--text-primary);
}

.header-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--green-mid);
  border-radius: 1px;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 32px;
  height: 32px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.hero {
  background: linear-gradient(160deg, var(--bg-hero) 0%, var(--lime-pale) 50%, var(--lime-bg) 100%);
  padding: 60px 0 80px;
}

.hero .container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 32px;
}

.hero-image {
  width: 100%;
  height: 400px;
  background: var(--bg-light);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
}

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

.hero-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 40%, rgba(198,242,33,0.12) 0%, transparent 50%),
    radial-gradient(circle at 70% 60%, rgba(90,140,30,0.08) 0%, transparent 50%);
  pointer-events: none;
  z-index: 1;
}

.hero-content {
  max-width: 680px;
}

.hero-title {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.hero-sub {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--green-mid);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
}

.pill-btn:hover {
  background: var(--green-dark);
  transform: translateY(-1px);
}

.pill-btn.pill-lime {
  background: var(--lime);
  color: var(--green-dark);
}

.pill-btn.pill-lime:hover {
  background: var(--lime-light);
}

.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--bg-light);
}

.section-lime {
  background: linear-gradient(160deg, var(--lime-pale) 0%, var(--bg-hero) 100%);
}

.section-title {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.3px;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 48px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: box-shadow 0.2s, transform 0.2s;
}

.feature-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--lime-pale);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

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

.post-list {
  display: flex;
  flex-direction: column;
}

.post-item {
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: background 0.15s;
}

.post-item:first-child {
  padding-top: 0;
}

.post-item:hover {
  background: var(--bg-light);
  margin: 0 -16px;
  padding-left: 16px;
  padding-right: 16px;
  border-radius: var(--radius-sm);
}

.post-title {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.2px;
}

.post-title a:hover {
  color: var(--green-mid);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.post-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--lime) 0%, var(--lime-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--green-dark);
  flex-shrink: 0;
}

.post-author {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.post-date {
  font-size: 13px;
  color: var(--text-muted);
}

.post-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-muted);
}

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

.about-text h2 {
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.3px;
}

.about-text p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.8;
}

.about-image {
  width: 100%;
  height: 340px;
  background: linear-gradient(135deg, var(--lime-pale) 0%, var(--bg-hero) 100%);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-image-inner {
  width: 80%;
  height: 70%;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--border);
}

.about-image-inner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.stat-card {
  text-align: center;
  padding: 32px 16px;
  background: var(--bg-white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.stat-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--green-mid);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
}

.cta-section {
  text-align: center;
  padding: 80px 0;
  background: linear-gradient(160deg, var(--bg-hero) 0%, var(--lime-bg) 100%);
}

.cta-section h2 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 2px solid var(--green-mid);
  color: var(--green-mid);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  background: transparent;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.btn-outline:hover {
  background: var(--green-mid);
  color: #fff;
}

.footer {
  background: var(--text-primary);
  color: rgba(255,255,255,0.6);
  padding: 48px 0;
}

.footer .container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
}

.footer-brand {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.footer-copy {
  font-size: 13px;
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--lime);
}

.page-header {
  background: linear-gradient(160deg, var(--bg-hero) 0%, var(--lime-pale) 100%);
  padding: 48px 0;
}

.page-header h1 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.3px;
}

.page-header p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-top: 8px;
}

.page-body {
  padding: 60px 0;
}

.page-body .container {
  max-width: 760px;
}

.page-body h2 {
  font-size: 22px;
  font-weight: 700;
  margin-top: 40px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--lime);
}

.page-body h2:first-child {
  margin-top: 0;
}

.page-body p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}

.page-body ul {
  margin-bottom: 16px;
  padding-left: 20px;
}

.page-body ul li {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  position: relative;
  padding-left: 16px;
}

.page-body ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green-mid);
}

.blog-filter {
  display: flex;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-tag {
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--bg-white);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}

.filter-tag:hover,
.filter-tag.active {
  background: var(--lime);
  color: var(--green-dark);
  border-color: var(--lime);
}

.blog-post-card {
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
}

.blog-post-card:first-child {
  padding-top: 0;
}

.blog-post-card .post-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--green-mid);
  background: var(--lime-pale);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}

.blog-post-card h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
}

.blog-post-card h2 a:hover {
  color: var(--green-mid);
}

.blog-post-card .post-excerpt {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-featured-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 40px;
}

.post-featured-wrap .post-featured-inner {
  width: 100%;
  max-height: 420px;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-light);
}

.post-featured-wrap img {
  width: 100%;
  height: 100%;
  max-height: 420px;
  object-fit: cover;
  object-position: center;
  display: block;
}

.post-article {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

.post-article h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 40px 0 16px;
  color: var(--text-primary);
}

.post-article p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 20px;
}

.post-article .post-lead {
  font-size: 18px;
  color: var(--text-primary);
  font-weight: 500;
  line-height: 1.75;
}

.post-back {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--green-mid);
  margin-bottom: 20px;
}

.post-back:hover {
  color: var(--green-dark);
}

@media (max-width: 920px) {
  .header-nav {
    display: none;
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  }

  .header-nav.open {
    display: flex;
  }

  .menu-toggle {
    display: flex;
  }

  .hero {
    padding: 40px 0 60px;
  }

  .hero-image {
    height: 240px;
  }

  .hero-title {
    font-size: 28px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .about-image {
    height: 240px;
    order: -1;
  }

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

  .footer .container {
    flex-direction: column;
    gap: 24px;
  }

  .section {
    padding: 56px 0;
  }

  .section-title {
    font-size: 24px;
  }
}