:root {
  --bg: #f7f9fb;
  --surface: #fff;
  --surface-muted: #f1f5f9;
  --border: #d8e0ea;
  --border-strong: #b8c4d4;
  --text: #172033;
  --muted: #58677c;
  --soft: #7a8798;
  --primary: #1463ff;
  --primary-hover: #0f4fd1;
  --primary-soft: #e8f0ff;
  --success: #16845b;
  --success-soft: #e8f7f0;
  --warning: #a86600;
  --warning-soft: #fff5db;
  --danger: #b42318;
  --danger-soft: #fff0ed;
  --info: #126a7a;
  --info-soft: #e5f7fa;
  --shadow: 0 1px 2px rgba(23, 32, 51, .08), 0 8px 24px rgba(23, 32, 51, .06);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0;
}
a { color: inherit; text-decoration: none; }
button, textarea { font: inherit; }
.shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}
.header-inner { height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 750; }
.brand-icon {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  color: #fff;
  background: var(--primary);
  border-radius: 6px;
  font-size: 14px;
}
.nav-links { display: flex; align-items: center; gap: 18px; color: var(--muted); font-size: 14px; }
.nav-links a[aria-current="page"], .nav-links a:hover { color: var(--primary); }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 9px 16px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 650;
  cursor: pointer;
}
.button:disabled { opacity: .55; cursor: not-allowed; }
.button-primary { background: var(--primary); color: #fff; }
.button-primary:hover { background: var(--primary-hover); }
.button-secondary { background: var(--surface); border-color: var(--border); color: var(--text); }
.button-secondary:hover { background: var(--surface-muted); }
.menu-button { display: none; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; }
.mobile-nav { padding: 0 0 16px; display: grid; gap: 8px; }
.mobile-nav[hidden] { display: none; }
.mobile-nav a:not(.button) { padding: 10px 0; color: var(--muted); border-top: 1px solid var(--border); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(460px, 7fr);
  gap: 28px;
  align-items: start;
  padding: 56px 0 38px;
}
.page-hero { padding: 56px 0 18px; max-width: 860px; }
.hero-copy { display: grid; gap: 18px; }
.eyebrow {
  margin: 0;
  color: var(--info);
  font-size: 12px;
  text-transform: uppercase;
  font-weight: 750;
  letter-spacing: .05em;
}
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 0; font-size: 40px; line-height: 1.1; letter-spacing: 0; }
h2 { margin-bottom: 10px; font-size: 28px; line-height: 1.2; letter-spacing: 0; }
h3 { margin-bottom: 8px; font-size: 18px; line-height: 1.3; }
.hero p, .page-hero p, .lead { color: var(--muted); font-size: 17px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.notice {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--muted);
  font-size: 14px;
}
.notice-info { background: var(--info-soft); color: #0d4c58; }
.notice-warning { background: var(--warning-soft); color: #6e4300; }

.checker-panel {
  display: grid;
  gap: 14px;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.panel-head { display: flex; justify-content: space-between; gap: 16px; align-items: center; padding-bottom: 12px; border-bottom: 1px solid var(--border); }
.panel-head h2 { margin: 0; font-size: 18px; }
.limit-chip, .status-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  border-radius: 999px;
  padding: 4px 9px;
  font-size: 12px;
  font-weight: 700;
  border: 1px solid var(--border);
}
.limit-chip { color: var(--muted); background: var(--surface-muted); }
.segmented { display: flex; gap: 8px; flex-wrap: wrap; }
.segmented button {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  border-radius: 999px;
  padding: 7px 12px;
  cursor: pointer;
}
.segmented button.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.segmented button:disabled { opacity: .5; cursor: not-allowed; }
textarea {
  width: 100%;
  min-height: 190px;
  resize: vertical;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  color: var(--text);
  background: #fff;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
}
textarea:focus { outline: 2px solid var(--primary-soft); border-color: var(--primary); }
.input-meta { display: flex; justify-content: space-between; gap: 12px; color: var(--muted); font-size: 13px; }
.checker-actions { display: flex; justify-content: space-between; gap: 12px; align-items: center; border-top: 1px solid var(--border); padding-top: 14px; }
.checker-actions .button-primary { margin-left: auto; }

.section, .report-section { padding: 42px 0; }
.section-head { max-width: 760px; margin-bottom: 18px; }
.section-head p { color: var(--muted); }
.summary-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-bottom: 18px; }
.summary-card {
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-align: center;
}
.summary-card strong { display: block; font-size: 26px; line-height: 1; }
.summary-card span { color: var(--muted); font-size: 13px; }
.summary-card.success { background: var(--success-soft); color: var(--success); border-color: rgba(22,132,91,.22); }
.summary-card.warning { background: var(--warning-soft); color: var(--warning); border-color: rgba(168,102,0,.22); }
.summary-card.danger { background: var(--danger-soft); color: var(--danger); border-color: rgba(180,35,24,.22); }
.results-wrap {
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.results-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.results-table th { background: var(--surface-muted); color: var(--muted); text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .05em; }
.results-table th, .results-table td { padding: 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
.results-table tr:last-child td { border-bottom: 0; }
.url-cell { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; max-width: 260px; overflow-wrap: anywhere; }
.status-likely_indexable { background: var(--success-soft); color: var(--success); border-color: rgba(22,132,91,.25); }
.status-warning { background: var(--warning-soft); color: var(--warning); border-color: rgba(168,102,0,.25); }
.status-blocked { background: var(--danger-soft); color: var(--danger); border-color: rgba(180,35,24,.25); }
.status-unknown { background: var(--info-soft); color: var(--info); border-color: rgba(18,106,122,.25); }
.result-cards { display: none; }
.empty-state { padding: 24px; color: var(--muted); text-align: center; }

.split-section {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 28px;
  padding: 40px 28px;
  background: var(--surface-muted);
  border-radius: 8px;
  margin-top: 18px;
  margin-bottom: 18px;
}
.split-section p { color: var(--muted); }
.feature-grid, .pricing-grid, .content-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.feature-grid article, .price-card, .content-grid article, .cta-band {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px;
}
.content-grid { grid-template-columns: repeat(2, 1fr); }
.steps { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.steps li { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 18px; }
.steps span { display: inline-grid; place-items: center; width: 28px; height: 28px; background: var(--primary); color: #fff; border-radius: 999px; font-weight: 800; margin-bottom: 12px; }
.pricing-grid { grid-template-columns: repeat(2, 1fr); }
.price-card h3 { font-size: 30px; }
.price-card.active { border-color: var(--primary); box-shadow: var(--shadow); }
.price-card ul, .content-grid ul, .article ul { padding-left: 20px; color: var(--muted); }
.faq-list { display: grid; gap: 10px; }
details { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 16px; }
summary { cursor: pointer; font-weight: 700; }
details p { color: var(--muted); margin: 10px 0 0; }
.article { max-width: 860px; padding: 56px 0; }
.article section { margin-top: 28px; }
.article p { color: var(--muted); }
.cta-band { display: flex; justify-content: space-between; gap: 16px; align-items: center; margin-top: 30px; }
.site-footer { margin-top: 54px; background: #eef3fb; border-top: 1px solid var(--border); padding: 34px 0; color: var(--muted); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 24px; }
.footer-grid h2 { font-size: 14px; color: var(--text); }
.footer-grid a:not(.brand) { display: block; margin: 7px 0; font-size: 14px; }
.small { font-size: 13px; color: var(--soft); }

@media (max-width: 860px) {
  .shell { width: min(100% - 32px, 1180px); }
  .nav-links, .header-cta { display: none; }
  .menu-button { display: inline-flex; }
  .hero { grid-template-columns: 1fr; padding-top: 28px; }
  h1 { font-size: 32px; }
  h2 { font-size: 24px; }
  .panel-head, .input-meta, .checker-actions, .cta-band { align-items: stretch; flex-direction: column; }
  .checker-actions .button-primary { margin-left: 0; }
  .button { width: 100%; }
  textarea { min-height: 160px; }
  .summary-grid { grid-template-columns: repeat(2, 1fr); }
  .results-table { display: none; }
  .result-cards { display: grid; gap: 10px; padding: 10px; }
  .result-card { border: 1px solid var(--border); border-radius: 8px; padding: 12px; background: var(--surface); }
  .result-card .url-cell { max-width: none; margin-bottom: 8px; }
  .result-card dl { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; margin: 10px 0; font-size: 13px; }
  .result-card dt { color: var(--muted); }
  .split-section, .feature-grid, .pricing-grid, .content-grid, .steps, .footer-grid { grid-template-columns: 1fr; }
}