:root {
  --bg: #faf7f2;
  --bg-elev: #ffffff;
  --bg-alt: #f0ebe1;
  --ink: #1f2a1a;
  --ink-soft: #4a5240;
  --ink-faint: #7a8070;
  --accent: #2d5016;
  --accent-soft: #4a7c2e;
  --accent-pale: #e6f0d8;
  --warn: #b54a1e;
  --ok: #2d7a3a;
  --border: #d9d2c3;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(31,42,26,0.06), 0 8px 24px rgba(31,42,26,0.06);
  --maxw: 1180px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--accent); }
a:hover { color: var(--accent-soft); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 8px 16px;
  border-radius: 0 0 var(--radius) 0;
  z-index: 100;
}
.skip-link:focus { left: 0; }

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

.site-header {
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: saturate(140%) blur(6px);
  background: rgba(255,255,255,0.92);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-size: 15px;
}
.brand-mark { flex-shrink: 0; }
.brand-text strong { color: var(--accent); font-weight: 700; }
.site-nav {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}
.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover { color: var(--accent); border-bottom-color: var(--accent-pale); }

.hero {
  padding: 64px 0 48px;
  background: linear-gradient(180deg, var(--accent-pale) 0%, var(--bg) 100%);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 48px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(32px, 4.5vw, 52px);
  line-height: 1.1;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
  color: var(--accent);
}
.hero-sub {
  font-size: 18px;
  color: var(--ink-soft);
  max-width: 560px;
  margin: 0 0 24px;
}
.hero-meta { display: flex; gap: 10px; flex-wrap: wrap; }
.meta-chip {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  color: var(--ink-soft);
  font-weight: 500;
}
.hero-illust { display: flex; justify-content: center; }

.section-head { margin-bottom: 32px; }
.section-head h2 {
  margin: 0 0 8px;
  font-size: clamp(24px, 3vw, 32px);
  color: var(--accent);
}
.section-head p { margin: 0; color: var(--ink-soft); font-size: 16px; }

.diagnostic-section { padding: 56px 0; }
.plant-selector { margin-bottom: 28px; }
.plant-label {
  display: block;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--ink);
}
.plant-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 14px;
  cursor: pointer;
  color: var(--ink-soft);
  transition: all 0.15s ease;
  font-family: inherit;
}
.chip:hover { border-color: var(--accent-soft); color: var(--accent); }
.chip-active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  font-weight: 600;
}
.chip:focus-visible, .btn:focus-visible, .shortcut-card:focus-visible {
  outline: 3px solid var(--accent-soft);
  outline-offset: 2px;
}

.diagnostic-workspace {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 24px;
  align-items: start;
}
.symptom-panel, .result-panel {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.symptom-panel h3, .result-panel h3 {
  margin: 0 0 6px;
  font-size: 18px;
  color: var(--accent);
}
.panel-hint {
  margin: 0 0 16px;
  color: var(--ink-faint);
  font-size: 14px;
}
.symptom-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px;
}
.symp-btn {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  color: var(--ink);
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}
.symp-btn:hover { border-color: var(--accent-soft); background: var(--accent-pale); }
.symp-btn.selected {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.symp-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
  flex-shrink: 0;
}
.symp-btn.selected .symp-dot { background: #fff; }

.symptom-actions {
  display: flex;
  gap: 10px;
  margin-top: 18px;
  flex-wrap: wrap;
}
.btn {
  font-family: inherit;
  font-size: 14px;
  padding: 10px 18px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--ink);
  cursor: pointer;
  font-weight: 500;
  transition: all 0.15s ease;
}
.btn:hover { border-color: var(--accent-soft); color: var(--accent); }
.btn-ghost { background: transparent; }
.btn-secondary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-secondary:hover { background: var(--accent-soft); border-color: var(--accent-soft); color: #fff; }

.result-empty {
  color: var(--ink-faint);
  font-size: 14px;
  padding: 24px 0;
  text-align: center;
  border: 1.5px dashed var(--border);
  border-radius: 10px;
}
.result-list { display: flex; flex-direction: column; gap: 14px; }
.result-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}
.result-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  flex-wrap: wrap;
  gap: 8px;
}
.result-card h4 {
  margin: 0;
  font-size: 16px;
  color: var(--accent);
}
.result-rank {
  background: var(--accent-pale);
  color: var(--accent);
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.result-card p {
  margin: 0 0 10px;
  font-size: 14px;
  color: var(--ink-soft);
}
.result-steps {
  margin: 0;
  padding-left: 18px;
  font-size: 13px;
  color: var(--ink-soft);
}
.result-steps li { margin-bottom: 4px; }
.severity-tag {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 600;
  margin-top: 6px;
}
.severity-act { background: #fde8e0; color: var(--warn); }
.severity-monitor { background: #fef4d2; color: #8a6a10; }
.severity-cosmetic { background: var(--accent-pale); color: var(--accent); }

.severity-bar {
  margin-top: 18px;
  padding: 12px 14px;
  background: var(--bg-alt);
  border-radius: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}
.severity-label { color: var(--ink-faint); font-weight: 500; }
.severity-text { font-weight: 600; color: var(--ink); }

.common-section { padding: 56px 0; background: var(--bg-alt); }
.shortcut-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}
.shortcut-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  color: var(--ink);
  transition: all 0.15s ease;
  box-shadow: var(--shadow);
  position: relative;
}
.shortcut-card:hover { transform: translateY(-2px); border-color: var(--accent-soft); }
.shortcut-num {
  position: absolute;
  top: 12px;
  right: 14px;
  font-size: 28px;
  font-weight: 800;
  color: var(--accent-pale);
  line-height: 1;
}
.shortcut-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--accent);
}
.shortcut-card p {
  margin: 0;
  font-size: 13px;
  color: var(--ink-soft);
}

.seasonal-section { padding: 56px 0; }
.season-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.season-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent-soft);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}
.season-card h3 {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 18px;
}
.season-card p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
}

.guide-section { padding: 56px 0; background: var(--bg-alt); }
.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.guide-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}
.guide-card h3 {
  margin: 0 0 10px;
  font-size: 17px;
  color: var(--accent);
}
.guide-card p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
}

.faq-section { padding: 56px 0; }
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.faq-list details {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  box-shadow: var(--shadow);
}
.faq-list summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--accent);
  font-size: 15px;
  list-style: none;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::before {
  content: "+";
  display: inline-block;
  margin-right: 10px;
  font-weight: 700;
  color: var(--accent-soft);
}
.faq-list details[open] summary::before { content: "−"; }
.faq-list details p {
  margin: 12px 0 0 24px;
  font-size: 14px;
  color: var(--ink-soft);
}

.site-footer {
  background: var(--accent);
  color: #e6f0d8;
  padding: 40px 0 24px;
  margin-top: 40px;
}
.footer-inner { display: grid; gap: 16px; }
.footer-brand .brand-text { color: #fff; }
.footer-brand .brand-text strong { color: #c8e0a8; }
.footer-note { margin: 6px 0 0; font-size: 13px; color: #c8e0a8; }
.footer-nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-nav a { color: #e6f0d8; text-decoration: none; font-size: 14px; }
.footer-nav a:hover { color: #fff; }
.footer-legal { font-size: 12px; color: #b8d49a; margin: 0; }

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 24px; }
  .hero-illust { order: -1; }
  .diagnostic-workspace { grid-template-columns: 1fr; }
  .site-nav { gap: 14px; }
  .site-nav a { font-size: 13px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero { padding: 40px 0 32px; }
  .diagnostic-section, .common-section, .seasonal-section, .guide-section, .faq-section { padding: 40px 0; }
  .symptom-grid { grid-template-columns: 1fr 1fr; }
  .chip { padding: 6px 12px; font-size: 13px; }
}
@media print {
  .site-header, .site-footer, .hero-illust, .symptom-actions, .shortcut-grid, .seasonal-section, .faq-section { display: none; }
  body { background: #fff; color: #000; }
  .result-panel { border: 1px solid #000; box-shadow: none; }
  .result-card { break-inside: avoid; }
}



/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}