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

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

:root {
  --canvas: #f7f7f4;
  --canvas-soft: #fafaf7;
  --surface-card: #ffffff;
  --surface-strong: #e6e5e0;
  --hairline: #e6e5e0;
  --hairline-soft: #efeee8;
  --hairline-strong: #cfcdc4;
  --ink: #26251e;
  --body: #5a5852;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --primary: #f54e00;
  --primary-active: #d04200;
  --on-primary: #ffffff;
  --semantic-success: #1f8a65;
  --semantic-error: #cf2d56;
  --r-xs: 4px;
  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-xl: 16px;
  --r-pill: 9999px;
}

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

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

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-nav {
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  height: 64px;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.nav-brand {
  font-family: 'Inter', sans-serif;
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.3px;
  text-decoration: none;
}

.nav-brand span { color: var(--primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--body);
  line-height: 1.4;
  transition: color 0.15s;
}

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

.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  margin: 5px 0;
  transition: all 0.2s;
}

.hero-band {
  padding: 80px 0;
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline-soft);
}

.hero-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 16px;
}

.hero-band h1 {
  font-size: 72px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -2.16px;
  color: var(--ink);
  max-width: 820px;
  margin-bottom: 20px;
}

.hero-band p {
  font-size: 16px;
  color: var(--body);
  max-width: 560px;
  line-height: 1.5;
  margin-bottom: 8px;
}

.hero-meta {
  font-size: 13px;
  color: var(--muted);
  margin-top: 24px;
}

.section { padding: 80px 0; }
.section-alt { background: var(--canvas-soft); }

.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}

.section-title {
  font-size: 36px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--body);
  max-width: 600px;
  line-height: 1.5;
  margin-bottom: 48px;
}

.card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 24px;
  transition: border-color 0.15s;
}

.card:hover { border-color: var(--hairline-strong); }

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.article-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: border-color 0.15s;
  display: block;
  color: inherit;
  text-decoration: none;
}

.article-card:hover { border-color: var(--hairline-strong); }

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

.article-card-body { padding: 20px 24px 24px; }

.article-card-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

.article-card h3 {
  font-size: 20px;
  font-weight: 400;
  letter-spacing: -0.1px;
  color: var(--ink);
  line-height: 1.3;
  margin-bottom: 10px;
}

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

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

.plant-card-img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.plant-card-body { padding: 16px 20px 20px; }

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

.plant-card-latin {
  font-size: 13px;
  color: var(--muted);
  font-style: italic;
  margin-bottom: 10px;
}

.light-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  background: var(--surface-strong);
  color: var(--ink);
  margin-bottom: 10px;
}

.light-badge.low { background: #dfa88f33; color: #7a4a30; }
.light-badge.indirect { background: #9fbbe033; color: #2a5070; }
.light-badge.bright { background: #9fc9a233; color: #2a6040; }
.light-badge.direct { background: #c0853233; color: #6a4010; }

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

.info-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.info-table th {
  text-align: left;
  padding: 12px 16px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--hairline);
  background: var(--canvas-soft);
}

.info-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--hairline-soft);
  color: var(--body);
  vertical-align: top;
}

.info-table tr:last-child td { border-bottom: none; }

.info-table td:first-child {
  font-weight: 600;
  color: var(--ink);
}

.table-wrap {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.cta-band {
  padding: 96px 0;
  background: var(--canvas);
  border-top: 1px solid var(--hairline-soft);
  text-align: center;
}

.cta-band h2 {
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: 12px;
}

.cta-band p {
  font-size: 16px;
  color: var(--body);
  margin-bottom: 32px;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}

.footer-brand-name span { color: var(--primary); }

.footer-brand-desc {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
  max-width: 240px;
}

.footer-col-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 14px;
  color: var(--body);
}

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

.footer-bottom {
  border-top: 1px solid var(--hairline-soft);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--muted);
  flex-wrap: wrap;
  gap: 8px;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  align-items: start;
}

.article-header {
  padding: 48px 0 40px;
  border-bottom: 1px solid var(--hairline-soft);
  margin-bottom: 48px;
}

.article-header h1 {
  font-size: 48px;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -1.2px;
  color: var(--ink);
  margin-bottom: 16px;
}

.article-header p {
  font-size: 18px;
  color: var(--body);
  line-height: 1.5;
  max-width: 680px;
  margin-bottom: 20px;
}

.article-meta {
  display: flex;
  gap: 20px;
  font-size: 13px;
  color: var(--muted);
  flex-wrap: wrap;
}

.article-content h2 {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin: 40px 0 16px;
}

.article-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin: 28px 0 12px;
}

.article-content p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 16px;
}

.article-content ul, .article-content ol {
  margin: 12px 0 20px 20px;
  color: var(--body);
  font-size: 16px;
  line-height: 1.6;
}

.article-content li { margin-bottom: 8px; }

.article-content a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.article-content a:hover { color: var(--primary); }

.article-figure {
  margin: 32px 0;
}

.article-figure img {
  border-radius: var(--r-lg);
  border: 1px solid var(--hairline);
  width: 100%;
}

.article-figure figcaption {
  font-size: 13px;
  color: var(--muted);
  margin-top: 8px;
  line-height: 1.4;
}

.sidebar-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 20px;
  margin-bottom: 20px;
}

.sidebar-card-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}

.sidebar-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sidebar-links a {
  font-size: 14px;
  color: var(--body);
  line-height: 1.4;
}

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

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

.contact-form label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 6px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  background: var(--surface-card);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-md);
  padding: 12px 16px;
  font-size: 16px;
  font-family: inherit;
  color: var(--ink);
  outline: none;
  transition: border-color 0.15s;
  height: 44px;
}

.contact-form textarea {
  height: 120px;
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--ink);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--muted-soft);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: var(--on-primary);
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  padding: 10px 18px;
  height: 40px;
  border-radius: var(--r-md);
  border: none;
  cursor: pointer;
  transition: background 0.15s;
  text-decoration: none;
}

.btn-primary:hover,
.btn-primary:focus { background: var(--primary-active); color: var(--on-primary); }

.btn-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--ink);
  color: var(--canvas);
  font-size: 14px;
  font-weight: 500;
  padding: 12px 20px;
  height: 44px;
  border-radius: var(--r-md);
  border: none;
  cursor: pointer;
  transition: opacity 0.15s;
  text-decoration: none;
}

.btn-download:hover { opacity: 0.88; color: var(--canvas); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-card);
  color: var(--ink);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 18px;
  height: 40px;
  border-radius: var(--r-md);
  border: 1px solid var(--hairline-strong);
  cursor: pointer;
  transition: border-color 0.15s;
  text-decoration: none;
}

.btn-secondary:hover { border-color: var(--ink); color: var(--ink); }

.form-success {
  display: none;
  background: #1f8a6515;
  border: 1px solid #1f8a6540;
  border-radius: var(--r-md);
  padding: 16px 20px;
  font-size: 15px;
  color: var(--semantic-success);
  margin-top: 16px;
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface-card);
  border-top: 1px solid var(--hairline);
  padding: 20px 24px;
  z-index: 200;
  display: none;
}

.cookie-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.cookie-text {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
  max-width: 680px;
}

.cookie-text a { color: var(--ink); text-decoration: underline; text-underline-offset: 2px; }

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

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.breadcrumb a { color: var(--body); }
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb .sep { color: var(--muted-soft); }

.divider {
  border: none;
  border-top: 1px solid var(--hairline-soft);
  margin: 48px 0;
}

.highlight-box {
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 20px 24px;
  margin: 24px 0;
}

.highlight-box p {
  font-size: 15px;
  color: var(--body);
  margin: 0;
  line-height: 1.6;
}

.page-header {
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--hairline-soft);
  margin-bottom: 56px;
}

.page-header h1 {
  font-size: 48px;
  font-weight: 400;
  letter-spacing: -1.2px;
  color: var(--ink);
  margin-bottom: 14px;
}

.page-header p {
  font-size: 17px;
  color: var(--body);
  max-width: 560px;
  line-height: 1.5;
}

.prose h2 {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin: 40px 0 14px;
}

.prose h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin: 28px 0 12px;
}

.prose p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 16px;
}

.prose ul, .prose ol {
  margin: 12px 0 20px 20px;
  color: var(--body);
  font-size: 16px;
  line-height: 1.6;
}

.prose li { margin-bottom: 8px; }

.prose a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 2px;
}

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

.prose strong { font-weight: 600; color: var(--ink); }

.updated-note {
  font-size: 13px;
  color: var(--muted);
  margin-top: 8px;
}

@media (max-width: 1024px) {
  .hero-band h1 { font-size: 56px; letter-spacing: -1.5px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .article-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--canvas); border-bottom: 1px solid var(--hairline); padding: 16px 24px; gap: 16px; }
  .nav-links.open { display: flex; }
  .nav-hamburger { display: block; }
  .site-nav { position: relative; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
  .hero-band h1 { font-size: 32px; letter-spacing: -0.5px; }
  .section-title { font-size: 26px; letter-spacing: -0.325px; }
  .card-grid, .card-grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .article-header h1 { font-size: 28px; letter-spacing: -0.5px; }
  .page-header h1 { font-size: 32px; letter-spacing: -0.5px; }
  .cookie-inner { flex-direction: column; }
}