/* ===== Tokens — sampled from s-pro.io ===== */
:root {
  --bg: #fafafa;
  --surface: #ffffff;
  --fg: #0a0a0a;
  --fg-2: #525252;
  --fg-3: #8a8a8a;
  --border: #e5e5e5;
  --border-strong: #0a0a0a;
  --accent: #f43f5e; /* coral — the only accent */

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  --container: 1200px;
  --gutter: clamp(20px, 4vw, 48px);

  --radius-sm: 2px;
  --radius-md: 4px;

  --shadow-card: 0 1px 0 rgba(10, 10, 10, 0.04);
}

/* ===== Reset & base ===== */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
code { font-family: ui-monospace, 'SFMono-Regular', Consolas, monospace; font-size: 0.92em; color: var(--fg-2); }
sup { font-size: 0.65em; }

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

.muted { color: var(--fg-2); }
.small { font-size: 13px; }

/* ===== Brand mark ===== */
.brand-mark {
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: 18px;
}
.brand-mark.sm { font-size: 15px; }
.brand-dot {
  color: var(--accent);
  margin: 0 1px;
}

/* ===== Nav ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 250, 250, 0.85);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.brand-sep { color: var(--fg-3); }
.brand-product { color: var(--fg-2); font-size: 14px; }
.nav-links {
  margin-left: auto;
  display: flex;
  gap: 28px;
  font-size: 14px;
  color: var(--fg-2);
}
.nav-links a:hover { color: var(--fg); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease, color 120ms ease;
  white-space: nowrap;
}
.btn .arr { transition: transform 200ms ease; display: inline-block; }
.btn:hover .arr { transform: translateX(4px); }
.btn-primary {
  background: var(--fg);
  color: var(--bg);
}
.btn-primary:hover { background: #1f1f1f; }
.btn-ghost {
  background: transparent;
  color: var(--fg);
}
.btn-ghost:hover { background: var(--fg); color: var(--bg); }
.btn-sm {
  padding: 10px 16px;
  font-size: 14px;
}

/* ===== Hero ===== */
.hero {
  padding: clamp(72px, 12vw, 140px) 0 clamp(80px, 10vw, 120px);
  border-bottom: 1px solid var(--border);
}
.hero-inner { max-width: 1100px; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--fg-2);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin-bottom: 28px;
}
.eyebrow .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}

.hero-title {
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.03em;
  margin: 0 0 24px;
  max-width: 22ch;
}
.accent-dot {
  position: relative;
  display: inline-block;
}
.accent-dot::after {
  content: '';
  position: absolute;
  right: -0.32em;
  bottom: 0.18em;
  width: 0.18em;
  height: 0.18em;
  border-radius: 50%;
  background: var(--accent);
}

.hero-sub {
  font-size: clamp(17px, 1.6vw, 20px);
  line-height: 1.55;
  color: var(--fg-2);
  max-width: 60ch;
  margin: 0 0 36px;
}

.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 64px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}
.metric {
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 28px 24px;
  background: var(--surface);
}
.metric-value {
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1;
  margin-bottom: 10px;
}
.metric-label {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--fg);
}
.metric-label .muted { font-weight: 400; }

@media (max-width: 800px) {
  .hero-metrics { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; }
}

/* ===== Section shell ===== */
.section {
  padding: clamp(72px, 9vw, 120px) 0;
  border-bottom: 1px solid var(--border);
}
.section-placeholder { padding: 56px 0; }
.section-head { max-width: 80ch; margin-bottom: 48px; }
.section-num {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(24px, 2.8vw, 36px);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin: 0 0 16px;
}
.section-lede {
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 1.6;
  color: var(--fg-2);
  max-width: 70ch;
  margin: 0;
}
.section-foot {
  margin-top: 32px;
  font-size: 13px;
}

/* ===== Section 01 — flow ===== */
.flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 16px;
  align-items: stretch;
  margin-top: 16px;
}
.flow-step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.flow-num {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  align-self: flex-start;
}
.flow-h {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0;
  line-height: 1.3;
}
.flow-p {
  font-size: 14px;
  line-height: 1.55;
  color: var(--fg-2);
  margin: 0;
}
.flow-arrow {
  align-self: center;
  color: var(--fg-3);
  font-size: 22px;
  font-weight: 300;
}
@media (max-width: 800px) {
  .flow {
    grid-template-columns: 1fr;
  }
  .flow-arrow { display: none; }
}

/* ===== Footnote markers ===== */
.fn-ref {
  color: var(--accent);
  cursor: help;
  font-weight: 700;
}

/* ===== Footer ===== */
.footer {
  padding: 32px 0;
  background: var(--surface);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== Strip — key-numbers row ===== */
.strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 40px;
  overflow: hidden;
}
.strip.strip-6 { grid-template-columns: repeat(6, 1fr); }
.strip-cell {
  padding: 22px 18px;
  border-right: 1px solid var(--border);
}
.strip-cell:last-child { border-right: none; }
.strip-num {
  font-size: clamp(20px, 1.9vw, 24px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
  line-height: 1.05;
}
.strip-num.accent { color: var(--accent); }
.strip-lbl {
  font-size: 11px;
  color: var(--fg-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}
@media (max-width: 900px) {
  .strip, .strip.strip-6 { grid-template-columns: repeat(2, 1fr); }
  .strip-cell { border-bottom: 1px solid var(--border); }
  .strip-cell:nth-child(2n) { border-right: none; }
}

/* ===== Sub-titles ===== */
.sub-title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg);
  margin: 36px 0 14px;
}

/* ===== Tables ===== */
.table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: 28px;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.data-table th, .data-table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.data-table th {
  font-weight: 700;
  color: var(--fg-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 11px;
  background: #f5f5f5;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover td { background: #fafafa; }

/* ===== Tags ===== */
.tag {
  display: inline-block;
  padding: 3px 9px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  white-space: nowrap;
}
.tag-low { background: #e6f9ec; color: #0a6e34; border: 1px solid #b6ecc6; }
.tag-medium { background: #fff7e0; color: #7a5a00; border: 1px solid #f5d985; }
.tag-high { background: #ffe9d6; color: #8a3a00; border: 1px solid #f4b88a; }
.tag-critical { background: #ffe1e7; color: #8a0d27; border: 1px solid #f4a4b3; }

/* ===== CRITICAL callouts ===== */
.callouts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}
.callout {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-md);
  padding: 20px 22px;
}
.callout-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.callout-h {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  line-height: 1.3;
}
.callout-p {
  font-size: 14px;
  line-height: 1.55;
  color: var(--fg-2);
  margin: 0;
}
@media (max-width: 800px) {
  .callouts { grid-template-columns: 1fr; }
}

/* ===== Action grid (D1, T1, etc.) ===== */
.action-grid {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.action-row {
  display: grid;
  grid-template-columns: 56px 1fr 60px 100px;
  gap: 16px;
  align-items: center;
  padding: 12px 18px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.action-row:last-child { border-bottom: none; }
.action-id {
  font-weight: 700;
  color: var(--fg);
  font-size: 13px;
  letter-spacing: 0.04em;
}
.action-text { color: var(--fg); line-height: 1.4; }
.action-owner {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--fg-2);
  text-transform: uppercase;
}
@media (max-width: 800px) {
  .action-row {
    grid-template-columns: 50px 1fr;
    gap: 8px 14px;
    padding: 14px 16px;
  }
  .action-text { grid-column: 2; grid-row: 1; }
  .action-owner { grid-column: 2; grid-row: 2; justify-self: start; }
  .action-row .tag { grid-column: 2; grid-row: 2; justify-self: end; }
  .action-id { grid-row: 1 / span 2; align-self: center; }
}

/* ===== Code health tiles ===== */
.code-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
.code-tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 26px;
}
.tile-row {
  display: flex;
  gap: 36px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.tile-num {
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1;
}
.tile-num.accent { color: var(--accent); }
.tile-lbl {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg-2);
  margin-top: 6px;
  font-weight: 600;
}
.tile-h {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-2);
  margin: 0 0 14px;
}
.tile-foot { margin-top: 14px; }
.tile-ratings {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
.rating { display: flex; align-items: center; gap: 8px; }
.rating-letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  font-weight: 800;
  font-size: 13px;
  color: #fff;
}
.rating-a { background: #1a7d3f; }
.rating-b { background: #6c8200; }
.rating-c { background: #b8860b; }
.rating-d { background: #c25c00; }
.rating-e { background: #b3271e; }
.rating-lbl { font-size: 13px; color: var(--fg-2); }

.severity-list {
  display: flex;
  flex-direction: column;
}
.severity-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.severity-row:last-child { border-bottom: none; }
.sev {
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: 11px;
}
.sev-blocker { color: #b3271e; }
.sev-critical { color: #c25c00; }
.sev-major { color: #b8860b; }
.sev-minor { color: var(--fg-2); }
.sev-info { color: var(--fg-3); }
.sev-num {
  font-family: ui-monospace, 'SFMono-Regular', Consolas, monospace;
  font-weight: 600;
  color: var(--fg);
}

.pipeline-note {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 14px;
  line-height: 1.55;
  color: var(--fg-2);
}
.pipeline-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 3px 9px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  margin-top: 1px;
}
.pipeline-note p { margin: 0; }

@media (max-width: 800px) {
  .code-grid { grid-template-columns: 1fr; }
}

/* ===== Run cards ===== */
.run-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.run-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 160px;
}
.run-date {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--fg-2);
  font-family: ui-monospace, 'SFMono-Regular', Consolas, monospace;
}
.run-name {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.run-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 12px;
}
.run-stat {
  font-weight: 700;
  letter-spacing: 0.04em;
}
.run-pass { color: #0a6e34; }
.run-fail { color: #b3271e; }
.run-block { color: #b8860b; }
.run-pct {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-top: auto;
  color: var(--fg);
}
.run-pct-low { color: var(--accent); }

@media (max-width: 800px) {
  .run-cards { grid-template-columns: 1fr; }
}

/* ===== Bugs list ===== */
.bugs-list {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
}
.bug-row {
  display: grid;
  grid-template-columns: 80px 1fr 240px 70px;
  gap: 16px;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.bug-row:last-child { border-bottom: none; }
.bug-id {
  font-family: ui-monospace, 'SFMono-Regular', Consolas, monospace;
  font-weight: 700;
  color: var(--fg);
}
.bug-suite {
  font-size: 12px;
  color: var(--fg-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}
.bug-status {
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--accent);
  justify-self: end;
}
@media (max-width: 800px) {
  .bug-row {
    grid-template-columns: 1fr 70px;
    gap: 6px 12px;
    padding: 14px 16px;
  }
  .bug-id { grid-column: 1; grid-row: 1; }
  .bug-status { grid-column: 2; grid-row: 1; }
  .bug-detail { grid-column: 1 / -1; grid-row: 2; }
  .bug-suite { grid-column: 1 / -1; grid-row: 3; }
}

/* ===== Section 05 — methodology & limits ===== */
.section-meta { background: var(--surface); }
.meta-terms {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 4px 24px;
  margin: 0 0 32px;
  padding: 18px 22px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 14px;
  line-height: 1.55;
}
.meta-terms dt {
  font-weight: 700;
  color: var(--fg);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 12px;
  padding-top: 3px;
}
.meta-terms dd {
  margin: 0;
  color: var(--fg-2);
}
.meta-terms dd b { color: var(--fg); font-weight: 700; }
@media (max-width: 600px) {
  .meta-terms { grid-template-columns: 1fr; gap: 4px; }
}
.meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.meta-col .sub-title { margin-top: 0; }
.meta-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--fg-2);
}
.meta-list li {
  padding-left: 16px;
  position: relative;
}
.meta-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.meta-list li b { color: var(--fg); font-weight: 700; }
.meta-foot {
  margin: 18px 0 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--fg);
  border-top: 1px solid var(--border);
  padding-top: 14px;
}
@media (max-width: 800px) {
  .meta-grid { grid-template-columns: 1fr; gap: 32px; }
}