:root {
  color-scheme: dark;
  --bg: #0b1220;
  --surface: #111b2e;
  --surface-2: #162238;
  --border: #28364d;
  --text: #eef4ff;
  --muted: #9aaac2;
  --accent: #72e2c1;
  --accent-2: #74a7ff;
  --warning: #f5bd65;
  --danger: #ff8e8e;
  --success: #72e2c1;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.6; }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.hero { border-bottom: 1px solid var(--border); background: radial-gradient(circle at 90% 0%, #183a50 0, transparent 45%), linear-gradient(150deg, #0b1220 30%, #101a2c); }
.topbar { max-width: 1180px; margin: auto; padding: 20px 22px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; gap: 10px; align-items: center; font-weight: 750; letter-spacing: -.02em; }
.brand-mark { display: grid; place-items: center; width: 32px; height: 32px; border: 1px solid #4c8077; border-radius: 9px; color: var(--accent); font-size: 12px; }
.readonly { color: var(--muted); border: 1px solid var(--border); border-radius: 999px; padding: 3px 10px; font-size: 12px; }
.hero-content { max-width: 1180px; margin: auto; padding: 58px 22px 64px; }
.eyebrow, .section-kicker, .card-label { color: var(--accent); font-size: 11px; font-weight: 750; letter-spacing: .14em; margin: 0 0 12px; }
h1 { font-size: clamp(36px, 6vw, 68px); line-height: 1.12; letter-spacing: -.055em; margin: 0; max-width: 900px; }
h1 span { color: var(--accent); }
.hero-copy { color: var(--muted); max-width: 640px; font-size: 17px; margin: 24px 0; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 8px; }
.hero-badges span { border: 1px solid var(--border); background: #101c2dcc; color: #c5d2e7; border-radius: 8px; padding: 6px 10px; font: 12px ui-monospace, SFMono-Regular, Menlo, monospace; }
main { max-width: 1180px; margin: auto; }
.section { padding: 54px 22px; border-bottom: 1px solid var(--border); scroll-margin-top: 16px; }
.section-heading { margin-bottom: 26px; }
.section-heading h2 { font-size: clamp(25px, 4vw, 36px); letter-spacing: -.035em; line-height: 1.2; margin: 0 0 10px; }
.section-heading p:last-child { color: var(--muted); margin: 0; max-width: 700px; }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.metric-grid.compact { margin-bottom: 16px; }
.metric { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 20px; min-width: 0; }
.metric > span { color: var(--muted); font-size: 12px; }
.metric strong { display: block; font-size: 29px; line-height: 1.2; margin: 10px 0 8px; letter-spacing: -.04em; }
.metric strong small { font-size: 13px; color: var(--muted); font-weight: 500; margin-left: 5px; }
.metric p { color: var(--muted); font-size: 12px; margin: 0; }
.metric.warning strong { color: var(--warning); }
.notice { margin-top: 14px; padding: 17px 19px; border: 1px solid #69512d; background: #2a2115; border-radius: 12px; }
.notice strong { color: var(--warning); }
.notice p { color: #d7c6aa; margin: 5px 0 0; font-size: 14px; }
.milestone-list, .requirement-list { display: grid; gap: 8px; }
.milestone, .requirement { display: grid; grid-template-columns: 58px 1fr; gap: 14px; align-items: start; padding: 16px; border: 1px solid var(--border); background: var(--surface); border-radius: 12px; }
.status-pill { display: inline-flex; justify-content: center; border-radius: 6px; padding: 3px 7px; font: 700 11px ui-monospace, monospace; text-transform: uppercase; }
.status-pill.done { color: var(--success); background: #17392f; }
.status-pill.partial { color: var(--warning); background: #3a2b17; }
.status-pill.stub { color: var(--danger); background: #3b1f27; }
.milestone h3, .requirement h3 { margin: 0 0 4px; font-size: 15px; }
.milestone p, .requirement p { margin: 0; color: var(--muted); font-size: 13px; }
.strategy-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.strategy-card, .ab-card, .panel { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 20px; }
.strategy-card h3 { margin: 0; font-size: 19px; text-transform: capitalize; }
.strategy-card .big-number { font-size: 34px; font-weight: 750; letter-spacing: -.04em; margin: 14px 0 6px; }
.bar { height: 5px; border-radius: 99px; background: #243047; overflow: hidden; margin: 12px 0 16px; }
.bar > span { display: block; height: 100%; background: var(--accent); }
.bar > span.state { background: var(--accent-2); }
.bar > span.summarize { background: var(--warning); }
.data-list { display: grid; gap: 8px; margin: 0; }
.data-list div { display: flex; justify-content: space-between; gap: 12px; font-size: 12px; }
.data-list dt { color: var(--muted); }
.data-list dd { margin: 0; text-align: right; font-family: ui-monospace, monospace; }
.ab-card { margin-top: 12px; display: flex; justify-content: space-between; align-items: center; gap: 20px; background: linear-gradient(110deg, var(--surface), #15253a); }
.ab-card h3 { margin: 0 0 6px; font-size: 22px; }
.ab-card p:last-child { color: var(--muted); margin: 0; }
.ab-p { text-align: right; }
.ab-p span { display: block; color: var(--muted); font-size: 12px; }
.ab-p strong { font-size: 30px; color: var(--accent); }
.task-table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 14px; }
.task-table { border-collapse: collapse; width: 100%; background: var(--surface); font-size: 13px; }
.task-table th, .task-table td { padding: 13px 16px; border-bottom: 1px solid var(--border); text-align: left; }
.task-table th { color: var(--muted); font-size: 11px; letter-spacing: .06em; }
.task-table tr:last-child td { border-bottom: 0; }
.task-table td:first-child { font-family: ui-monospace, monospace; color: #cbd8ec; }
.task-table td:last-child { color: var(--muted); }
.task-table .fail { color: var(--warning); }
.split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.panel h3 { margin: 0 0 14px; font-size: 16px; }
.confusion-list, .error-list { display: grid; gap: 9px; }
.confusion-item, .error-item { font-size: 12px; border-left: 2px solid var(--border); padding-left: 10px; }
.confusion-item { color: var(--muted); }
.confusion-item strong { color: var(--text); margin-right: 6px; }
.error-item { color: var(--muted); }
.error-item strong { color: var(--warning); }
.document-links { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.document-links a { display: flex; justify-content: space-between; gap: 12px; padding: 15px 16px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); font-size: 13px; }
.document-links a:hover { border-color: var(--accent); }
.document-links span { color: var(--muted); font: 11px ui-monospace, monospace; }
footer { max-width: 1180px; margin: auto; padding: 36px 22px 50px; color: var(--muted); font-size: 12px; }
footer strong { color: var(--text); }
footer p { max-width: 760px; }
.loading, .load-error { color: var(--muted); padding: 16px; border: 1px dashed var(--border); border-radius: 10px; }
.load-error { color: var(--danger); }
@media (max-width: 800px) {
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .strategy-grid, .split-grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .hero-content { padding: 40px 18px 46px; }
  .topbar, .section, footer { padding-left: 16px; padding-right: 16px; }
  .hero-copy { font-size: 15px; }
  .section { padding-top: 42px; padding-bottom: 42px; }
  .metric { padding: 16px; }
  .metric strong { font-size: 25px; }
  .milestone, .requirement { grid-template-columns: 50px 1fr; padding: 14px; gap: 10px; }
  .ab-card { align-items: flex-start; }
  .ab-p strong { font-size: 25px; }
  .document-links { grid-template-columns: 1fr; }
  .task-table th, .task-table td { padding: 11px 12px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }