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

: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;
  --success:       #1f8a65;
  --error:         #cf2d56;
  --section-rhythm: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;
  background-color: var(--canvas);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

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

h1, h2, h3, h4 {
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -0.02em;
  line-height: 1.2;
}
h1 { font-size: clamp(2rem, 5vw, 3rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.4rem, 3vw, 1.75rem); }
h3 { font-size: 1.25rem; }

p { color: var(--body); line-height: 1.6; }

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

.site-header {
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  flex-shrink: 0;
}
.logo-mark {
  width: 32px;
  height: 32px;
  background: var(--ink);
  color: var(--canvas);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.5px;
}
.logo-text { font-size: 18px; font-weight: 600; letter-spacing: -0.3px; color: var(--ink); }

.main-nav { margin-left: auto; }
.nav-list { list-style: none; display: flex; gap: 4px; align-items: center; }
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--body);
  padding: 6px 10px;
  border-radius: 6px;
  text-decoration: none;
  transition: color 0.15s, background 0.15s;
}
.nav-link:hover { color: var(--ink); background: var(--surface-strong); text-decoration: none; }
.nav-link--active { color: var(--ink); font-weight: 600; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: 0.2s;
}

.layout-with-sidebar {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 0;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  min-height: calc(100vh - 64px);
}

.sidebar {
  border-right: 1px solid var(--hairline);
  padding: 40px 24px 40px 0;
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  overflow-y: auto;
}
.sidebar-inner { }
.sidebar-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
.sidebar-list { list-style: none; }
.sidebar-link {
  display: block;
  font-size: 14px;
  color: var(--body);
  padding: 6px 10px;
  border-radius: 6px;
  text-decoration: none;
  margin-bottom: 2px;
  transition: color 0.15s, background 0.15s;
}
.sidebar-link:hover { color: var(--ink); background: var(--surface-strong); text-decoration: none; }
.sidebar-link--active { color: var(--ink); background: var(--surface-strong); font-weight: 500; }
.sidebar-divider { height: 1px; background: var(--hairline); margin: 20px 0; }

.page-content {
  padding: 48px 0 80px 40px;
  min-width: 0;
}

.page-content-full {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb-sep { color: var(--muted-soft); }

.page-header { margin-bottom: 40px; }
.page-header h1 { margin-bottom: 12px; }
.page-header .lead { font-size: 17px; color: var(--body); max-width: 640px; line-height: 1.6; }

.tag-pill {
  display: inline-flex;
  align-items: center;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 9999px;
  background: var(--surface-strong);
  color: var(--muted);
  margin-bottom: 12px;
}
.tag-pill--peach { background: #dfa88f33; color: #8b5e4a; }
.tag-pill--mint  { background: #9fc9a233; color: #2d6b42; }
.tag-pill--blue  { background: #9fbbe033; color: #2d5080; }
.tag-pill--lavender { background: #c0a8dd33; color: #6b4a8b; }
.tag-pill--gold  { background: #c0853233; color: #7a5520; }

.toc {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 40px;
}
.toc-title { font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; }
.toc ol { padding-left: 16px; }
.toc li { margin-bottom: 6px; }
.toc a { font-size: 14px; color: var(--body); }
.toc a:hover { color: var(--ink); }

.content-section { margin-bottom: 56px; }
.content-section h2 { margin-bottom: 20px; padding-top: 8px; border-top: 1px solid var(--hairline-soft); }
.content-section h3 { margin-bottom: 14px; margin-top: 28px; }
.content-section p { margin-bottom: 16px; }
.content-section ul, .content-section ol { padding-left: 20px; margin-bottom: 16px; }
.content-section li { color: var(--body); margin-bottom: 8px; line-height: 1.6; }

.table-wrap { overflow-x: auto; margin-bottom: 28px; border-radius: 12px; border: 1px solid var(--hairline); }
.ref-table { width: 100%; border-collapse: collapse; background: var(--surface-card); }
.ref-table th {
  background: var(--canvas-soft);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--hairline);
}
.ref-table td {
  font-size: 14px;
  color: var(--body);
  padding: 12px 16px;
  border-bottom: 1px solid var(--hairline-soft);
  vertical-align: top;
}
.ref-table tr:last-child td { border-bottom: none; }
.ref-table tr:hover td { background: var(--canvas-soft); }
.ref-table .term-cell { font-weight: 500; color: var(--ink); }

.checklist { list-style: none; padding: 0; }
.checklist li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--hairline-soft);
  color: var(--body);
  font-size: 15px;
}
.checklist li:last-child { border-bottom: none; }
.check-icon {
  width: 20px;
  height: 20px;
  border: 1.5px solid var(--hairline-strong);
  border-radius: 4px;
  flex-shrink: 0;
  margin-top: 2px;
  background: var(--surface-card);
}

.faq-item {
  border-bottom: 1px solid var(--hairline);
}
.faq-item summary {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-icon { font-size: 20px; color: var(--muted); transition: transform 0.2s; flex-shrink: 0; }
.faq-item[open] .faq-icon { transform: rotate(45deg); }
.faq-body { padding: 0 0 16px; color: var(--body); font-size: 15px; line-height: 1.6; }

.related-content {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--hairline);
}
.related-content h2 { font-size: 1.1rem; margin-bottom: 20px; color: var(--muted); font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; font-size: 12px; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.related-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  padding: 20px;
  text-decoration: none;
  display: block;
  transition: border-color 0.15s;
}
.related-card:hover { border-color: var(--hairline-strong); text-decoration: none; }
.related-card-label { font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.related-card-title { font-size: 15px; font-weight: 500; color: var(--ink); line-height: 1.4; }

.hero {
  background: var(--canvas);
  padding: 80px 0;
  border-bottom: 1px solid var(--hairline);
}
.hero-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); max-width: 760px; margin-bottom: 20px; }
.hero .hero-lead { font-size: 18px; color: var(--body); max-width: 580px; line-height: 1.6; margin-bottom: 32px; }

.index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 40px;
}
.index-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  padding: 24px;
  text-decoration: none;
  display: block;
  transition: border-color 0.15s;
}
.index-card:hover { border-color: var(--hairline-strong); text-decoration: none; }
.index-card-tag { margin-bottom: 12px; }
.index-card h3 { font-size: 17px; font-weight: 500; color: var(--ink); margin-bottom: 8px; }
.index-card p { font-size: 14px; color: var(--muted); line-height: 1.5; }

.summary-section { padding: var(--section-rhythm) 0; }
.summary-section h2 { margin-bottom: 28px; }

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary);
  color: var(--on-primary);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  height: 40px;
  transition: background 0.15s;
}
.btn-primary:hover { background: var(--primary-active); text-decoration: none; color: var(--on-primary); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  background: var(--surface-card);
  color: var(--ink);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: 8px;
  border: 1px solid var(--hairline-strong);
  cursor: pointer;
  text-decoration: none;
  height: 40px;
  transition: background 0.15s;
}
.btn-secondary:hover { background: var(--surface-strong); text-decoration: none; color: var(--ink); }

.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 14px; font-weight: 500; color: var(--ink); margin-bottom: 6px; }
.form-input {
  width: 100%;
  background: var(--surface-card);
  color: var(--ink);
  font-size: 15px;
  padding: 12px 16px;
  border: 1px solid var(--hairline-strong);
  border-radius: 8px;
  height: 44px;
  transition: border-color 0.15s;
  font-family: inherit;
}
.form-input:focus { outline: none; border-color: var(--primary); }
.form-input.invalid { border-color: var(--error); }
.form-msg { font-size: 13px; color: var(--error); margin-top: 4px; display: none; }
.form-msg.visible { display: block; }
.form-textarea { height: 120px; resize: vertical; }
.form-success {
  display: none;
  background: #1f8a6515;
  border: 1px solid #1f8a6540;
  border-radius: 8px;
  padding: 16px 20px;
  color: var(--success);
  font-size: 15px;
  margin-top: 16px;
}
.form-success.visible { display: block; }
.submit-btn { min-width: 160px; justify-content: center; }

.cookie-banner {
  position: fixed;
  bottom: 16px;
  left: 0;
  right: 0;
  margin-left: auto;
  margin-right: auto;
  max-width: 560px;
  background: var(--ink);
  color: var(--canvas);
  border-radius: 12px;
  padding: 20px 24px;
  z-index: 9999;
  box-shadow: 0 4px 24px rgba(0,0,0,0.18);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.cookie-banner.hidden { display: none; }
.cookie-banner p { font-size: 14px; color: var(--canvas); line-height: 1.5; margin: 0; }
.cookie-banner a { color: var(--canvas); text-decoration: underline; }
.cookie-actions { display: flex; gap: 8px; }
.cookie-accept {
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
}
.cookie-reject {
  background: transparent;
  color: var(--canvas);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
}

.site-footer {
  background: var(--canvas);
  border-top: 1px solid var(--hairline);
  padding: 64px 0 48px;
}
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-bottom: 40px;
}
.footer-col-title { font-size: 12px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 8px; }
.footer-links a { font-size: 14px; color: var(--body); text-decoration: none; }
.footer-links a:hover { color: var(--ink); }
.footer-contact { margin-top: 16px; }
.footer-contact p { font-size: 13px; color: var(--muted); line-height: 1.6; }
.footer-disclaimers { border-top: 1px solid var(--hairline); padding-top: 24px; margin-bottom: 16px; }
.footer-disclaimers p { font-size: 12px; color: var(--muted); line-height: 1.6; margin-bottom: 8px; }
.footer-bottom { }
.footer-bottom p { font-size: 13px; color: var(--muted-soft); }

.info-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
}
.info-card h3 { margin-bottom: 10px; font-size: 16px; font-weight: 600; }
.info-card p { font-size: 14px; color: var(--body); }

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    padding: 12px 24px 20px;
  }
  .main-nav.open { display: block; }
  .nav-list { flex-direction: column; gap: 2px; }
  .nav-link { display: block; }

  .layout-with-sidebar {
    grid-template-columns: 1fr;
    padding: 0;
  }
  .sidebar {
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--hairline);
    padding: 20px 24px;
    overflow: visible;
  }
  .sidebar-list { display: flex; flex-wrap: wrap; gap: 4px; }
  .sidebar-link { font-size: 13px; }
  .sidebar-divider { display: none; }

  .page-content { padding: 32px 24px 60px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .hero { padding: 48px 0; }
  .related-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .index-grid { grid-template-columns: 1fr; }
  .cookie-banner { margin: 0 16px; max-width: calc(100% - 32px); }
}