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

:root {
  --color-primary: #f54e00;
  --color-primary-active: #d04200;
  --color-canvas: #f7f7f4;
  --color-canvas-soft: #fafaf7;
  --color-surface-card: #ffffff;
  --color-surface-strong: #e6e5e0;
  --color-hairline: #e6e5e0;
  --color-hairline-soft: #efeee8;
  --color-hairline-strong: #cfcdc4;
  --color-ink: #26251e;
  --color-body: #5a5852;
  --color-muted: #807d72;
  --color-muted-soft: #a09c92;
  --color-on-primary: #ffffff;
  --color-success: #1f8a65;
  --color-error: #cf2d56;
  --rounded-xs: 4px;
  --rounded-sm: 6px;
  --rounded-md: 8px;
  --rounded-lg: 12px;
  --rounded-xl: 16px;
  --rounded-pill: 9999px;
  --spacing-xxs: 4px;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-base: 16px;
  --spacing-md: 20px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-section: 80px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-body);
  background-color: var(--color-canvas);
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--color-ink); }
img { display: block; max-width: 100%; height: auto; }
ul, ol { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

h1, h2, h3, h4 {
  font-weight: 400;
  color: var(--color-ink);
  line-height: 1.2;
}

h1 { font-size: 72px; letter-spacing: -2.16px; line-height: 1.1; }
h2 { font-size: 36px; letter-spacing: -0.72px; }
h3 { font-size: 26px; letter-spacing: -0.325px; line-height: 1.25; }
h4 { font-size: 22px; letter-spacing: -0.11px; line-height: 1.3; }

p { color: var(--color-body); line-height: 1.5; }

.text-ink { color: var(--color-ink); }
.text-muted { color: var(--color-muted); }
.text-sm { font-size: 14px; }
.text-caption { font-size: 13px; }

.badge-pill {
  display: inline-flex;
  align-items: center;
  background: var(--color-surface-strong);
  color: var(--color-ink);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  border-radius: var(--rounded-pill);
  padding: 4px 10px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-canvas);
  border-bottom: 1px solid var(--color-hairline);
  height: 64px;
  display: flex;
  align-items: center;
}

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

.site-logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  letter-spacing: -0.3px;
}

.site-logo span { color: var(--color-primary); }

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.site-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-body);
  transition: color 0.15s;
}

.site-nav a:hover { color: var(--color-ink); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--color-ink);
}

.hero-band {
  padding: var(--spacing-section) 0;
  background: var(--color-canvas);
}

.hero-band .hero-label {
  margin-bottom: var(--spacing-lg);
}

.hero-band h1 {
  margin-bottom: var(--spacing-lg);
  max-width: 800px;
}

.hero-band .hero-desc {
  font-size: 18px;
  color: var(--color-body);
  max-width: 560px;
  margin-bottom: var(--spacing-xxl);
  line-height: 1.5;
}

.hero-image {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  border-radius: var(--rounded-lg);
  border: 1px solid var(--color-hairline);
  margin-top: var(--spacing-xxl);
}

.section {
  padding: var(--spacing-section) 0;
}

.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--spacing-md);
}

.section-title {
  margin-bottom: var(--spacing-lg);
}

.section-desc {
  font-size: 18px;
  color: var(--color-body);
  max-width: 640px;
  margin-bottom: var(--spacing-xxl);
}

.divider {
  border: none;
  border-top: 1px solid var(--color-hairline);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.card-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

.feature-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-lg);
}

.feature-card h4 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-ink);
}

.feature-card p {
  font-size: 14px;
  color: var(--color-body);
  line-height: 1.5;
}

.article-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.article-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.article-card-body {
  padding: var(--spacing-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-card-body .badge-pill {
  margin-bottom: var(--spacing-sm);
}

.article-card-body h3 {
  font-size: 20px;
  letter-spacing: -0.2px;
  margin-bottom: var(--spacing-sm);
  color: var(--color-ink);
}

.article-card-body p {
  font-size: 14px;
  color: var(--color-body);
  line-height: 1.5;
  flex: 1;
}

.article-card-meta {
  margin-top: var(--spacing-base);
  font-size: 13px;
  color: var(--color-muted);
}

.read-link {
  display: inline-block;
  margin-top: var(--spacing-base);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-hairline-strong);
  padding-bottom: 2px;
  transition: border-color 0.15s;
}

.read-link:hover {
  border-color: var(--color-ink);
  color: var(--color-ink);
}

.plant-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.plant-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  overflow: hidden;
}

.plant-card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.plant-card-body {
  padding: var(--spacing-base);
}

.plant-card-body h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--color-ink);
}

.plant-card-body .plant-latin {
  font-size: 13px;
  color: var(--color-muted);
  font-style: italic;
  margin-bottom: var(--spacing-xs);
}

.plant-card-body p {
  font-size: 13px;
  color: var(--color-body);
}

.site-footer {
  background: var(--color-canvas);
  border-top: 1px solid var(--color-hairline);
  padding: 64px 0 48px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: var(--spacing-xxl);
  margin-bottom: var(--spacing-xxl);
}

.footer-brand p {
  font-size: 14px;
  color: var(--color-body);
  margin-top: var(--spacing-base);
  max-width: 260px;
  line-height: 1.5;
}

.footer-col h5 {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: var(--spacing-base);
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

.footer-col ul { display: flex; flex-direction: column; gap: var(--spacing-xs); }

.footer-col a {
  font-size: 14px;
  color: var(--color-body);
  transition: color 0.15s;
}

.footer-col a:hover { color: var(--color-ink); }

.footer-bottom {
  border-top: 1px solid var(--color-hairline);
  padding-top: var(--spacing-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--color-muted);
}

.contact-form-section {
  background: var(--color-surface-card);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
  max-width: 560px;
}

.form-group { margin-bottom: var(--spacing-lg); }

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--color-surface-card);
  border: 1px solid var(--color-hairline-strong);
  border-radius: var(--rounded-md);
  padding: 12px 16px;
  font-size: 16px;
  color: var(--color-ink);
  font-family: inherit;
  transition: border-color 0.15s;
  height: 44px;
}

.form-group textarea { height: auto; resize: vertical; }

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-ink);
}

.form-group input.error,
.form-group textarea.error {
  border-color: var(--color-error);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 18px;
  height: 40px;
  border-radius: var(--rounded-md);
  border: none;
  cursor: pointer;
  transition: background 0.15s;
  font-family: inherit;
}

.btn-primary:hover { background: var(--color-primary-active); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.form-message {
  margin-top: var(--spacing-base);
  padding: 12px 16px;
  border-radius: var(--rounded-md);
  font-size: 14px;
  display: none;
}

.form-message.success {
  background: #e6f4ef;
  color: var(--color-success);
  border: 1px solid #b3ddd0;
}

.article-page-header {
  padding: var(--spacing-xxl) 0 var(--spacing-section);
  border-bottom: 1px solid var(--color-hairline);
  margin-bottom: var(--spacing-section);
}

.article-page-header .badge-pill { margin-bottom: var(--spacing-md); }

.article-page-header h1 {
  font-size: 48px;
  letter-spacing: -1.2px;
  max-width: 760px;
  margin-bottom: var(--spacing-lg);
}

.article-page-header .article-meta {
  font-size: 14px;
  color: var(--color-muted);
  display: flex;
  gap: var(--spacing-lg);
}

.article-hero-img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  border-radius: var(--rounded-lg);
  border: 1px solid var(--color-hairline);
  margin-bottom: var(--spacing-section);
}

.article-body {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 64px;
  align-items: start;
}

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

.article-content h2 {
  font-size: 28px;
  letter-spacing: -0.5px;
  margin-top: var(--spacing-xxl);
  margin-bottom: var(--spacing-base);
  color: var(--color-ink);
}

.article-content h3 {
  font-size: 22px;
  letter-spacing: -0.2px;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--color-ink);
}

.article-content p {
  margin-bottom: var(--spacing-base);
  line-height: 1.6;
}

.article-content ul,
.article-content ol {
  margin-bottom: var(--spacing-base);
  padding-left: var(--spacing-xl);
}

.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }

.article-content li {
  margin-bottom: var(--spacing-xs);
  line-height: 1.6;
  color: var(--color-body);
}

.article-sidebar { position: sticky; top: 80px; }

.sidebar-box {
  background: var(--color-surface-card);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.sidebar-box h5 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--color-muted);
  margin-bottom: var(--spacing-base);
}

.sidebar-box ul { display: flex; flex-direction: column; gap: var(--spacing-xs); }

.sidebar-box a {
  font-size: 14px;
  color: var(--color-body);
  border-bottom: 1px solid var(--color-hairline-soft);
  padding-bottom: 6px;
  display: block;
}

.sidebar-box a:hover { color: var(--color-ink); }

.toc-link { font-size: 14px; color: var(--color-body); }
.toc-link:hover { color: var(--color-ink); }

.info-box {
  background: var(--color-canvas-soft);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-md);
  padding: var(--spacing-base) var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

.info-box p { margin: 0; font-size: 14px; }

.page-header {
  padding: var(--spacing-section) 0;
  border-bottom: 1px solid var(--color-hairline);
}

.page-header h1 {
  font-size: 48px;
  letter-spacing: -1.2px;
  margin-bottom: var(--spacing-base);
}

.page-header p {
  font-size: 18px;
  color: var(--color-body);
  max-width: 560px;
}

.page-content {
  padding: var(--spacing-section) 0;
  max-width: 720px;
}

.page-content h2 {
  font-size: 26px;
  letter-spacing: -0.3px;
  margin-top: var(--spacing-xxl);
  margin-bottom: var(--spacing-base);
  color: var(--color-ink);
}

.page-content p {
  margin-bottom: var(--spacing-base);
  line-height: 1.6;
}

.page-content ul {
  list-style: disc;
  padding-left: var(--spacing-xl);
  margin-bottom: var(--spacing-base);
}

.page-content li {
  margin-bottom: var(--spacing-xs);
  line-height: 1.6;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--color-ink);
  color: var(--color-canvas);
  padding: var(--spacing-lg) 0;
  display: none;
}

.cookie-banner .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xl);
}

.cookie-banner p {
  font-size: 14px;
  color: var(--color-canvas);
  max-width: 680px;
}

.cookie-banner a { color: var(--color-primary); }

.cookie-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

.btn-cookie-accept {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border: none;
  border-radius: var(--rounded-md);
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
}

.btn-cookie-reject {
  background: transparent;
  color: var(--color-canvas);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--rounded-md);
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
}

.breadcrumb {
  display: flex;
  gap: var(--spacing-xs);
  align-items: center;
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: var(--spacing-lg);
}

.breadcrumb a { color: var(--color-muted); }
.breadcrumb a:hover { color: var(--color-ink); }
.breadcrumb span { color: var(--color-hairline-strong); }

@media (max-width: 1024px) {
  h1 { font-size: 56px; letter-spacing: -1.5px; }

  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .plant-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-xl); }

  .article-body { grid-template-columns: 1fr; gap: var(--spacing-xxl); }
  .article-sidebar { position: static; }
  .about-grid { grid-template-columns: 1fr; gap: var(--spacing-xxl); }
}

@media (max-width: 768px) {
  h1 { font-size: 36px; letter-spacing: -1px; }
  h2 { font-size: 28px; }
  h3 { font-size: 22px; }

  .container { padding: 0 var(--spacing-base); }

  .site-nav { display: none; }
  .site-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-canvas);
    border-bottom: 1px solid var(--color-hairline);
    padding: var(--spacing-lg);
    gap: var(--spacing-base);
  }

  .nav-toggle { display: flex; }

  .card-grid { grid-template-columns: 1fr; }
  .card-grid-2 { grid-template-columns: 1fr; }
  .plant-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }

  .footer-bottom { flex-direction: column; gap: var(--spacing-base); text-align: center; }

  .hero-band h1 { font-size: 36px; letter-spacing: -1px; }
  .article-page-header h1 { font-size: 32px; }
  .page-header h1 { font-size: 32px; }

  .cookie-banner .container { flex-direction: column; align-items: flex-start; }

  .contact-form-section { padding: var(--spacing-lg); }
}