:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --ink: #17181c;
  --muted: #5b5f68;
  --line: #e5e2db;
  --accent: #c2410c;
  --accent-soft: #fff1e8;
  --ok: #166534;
  --ok-soft: #e8f5ec;
  --wip: #9a3412;
  --wip-soft: #fdeee3;
  --plan: #4b5563;
  --plan-soft: #eef0f3;
  --code-bg: #15171c;
  --code-ink: #e6e6e3;
  --code-k: #f0a37a;
  --code-t: #8cc4ff;
  --code-s: #a8d8a0;
  --code-n: #e7c27d;
  --code-c: #7d828c;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1115;
    --surface: #171a20;
    --ink: #ecebe7;
    --muted: #9ca1ab;
    --line: #262a32;
    --accent: #fb8a4c;
    --accent-soft: #2a1b13;
    --ok: #7fd49a;
    --ok-soft: #13261a;
    --wip: #fbaa76;
    --wip-soft: #2c1c11;
    --plan: #aab1bd;
    --plan-soft: #1e2229;
    --code-bg: #0b0c0f;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0f1115; --surface: #171a20; --ink: #ecebe7; --muted: #9ca1ab; --line: #262a32;
  --accent: #fb8a4c; --accent-soft: #2a1b13; --ok: #7fd49a; --ok-soft: #13261a;
  --wip: #fbaa76; --wip-soft: #2c1c11; --plan: #aab1bd; --plan-soft: #1e2229; --code-bg: #0b0c0f;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
}
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 32px; } }
a { color: var(--accent); }
code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 0.92em; }
p code, td code, .what code { background: var(--plan-soft); padding: 1px 5px; border-radius: 4px; }

.top {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.bar { display: flex; align-items: center; justify-content: space-between; height: 56px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--ink); text-decoration: none; letter-spacing: -0.01em; }
.brand svg { width: 26px; height: 26px; }
.brand rect { fill: var(--accent); }
.brand path { stroke: #fff; stroke-width: 2.4; stroke-linecap: round; fill: none; }
nav { display: flex; gap: 20px; overflow-x: auto; scrollbar-width: none; }
nav a { color: var(--muted); text-decoration: none; font-size: 14px; white-space: nowrap; }
nav a:hover { color: var(--ink); }
@media (max-width: 560px) { nav a:nth-child(n+4) { display: none; } nav { gap: 14px; } }

.hero { padding: 64px 16px 40px; }
@media (min-width: 720px) { .hero { padding: 88px 32px 56px; } }
.status {
  display: inline-flex; align-items: center; gap: 8px; margin: 0 0 20px;
  font-size: 13px; color: var(--wip); background: var(--wip-soft);
  padding: 4px 12px; border-radius: 999px;
}
.dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
h1 { font-size: clamp(34px, 6vw, 58px); line-height: 1.06; letter-spacing: -0.03em; margin: 0 0 18px; max-width: 14ch; }
.lede { font-size: clamp(17px, 2.2vw, 20px); color: var(--muted); max-width: 60ch; margin: 0 0 40px; }
.hero-grid { display: grid; gap: 28px; }
@media (min-width: 900px) { .hero-grid { grid-template-columns: 1fr 1.15fr; align-items: start; } }
.points { display: grid; gap: 18px; }
.points div { padding-left: 16px; border-left: 2px solid var(--line); color: var(--muted); }
.points strong { color: var(--ink); display: block; }

.code { background: var(--code-bg); border-radius: 14px; overflow: hidden; border: 1px solid var(--line); min-width: 0; }
.tabs { display: flex; gap: 4px; padding: 8px 8px 0; }
.tabs button {
  font: inherit; font-size: 13px; color: var(--code-c); background: none; border: 0;
  padding: 6px 12px; border-radius: 8px 8px 0 0; cursor: pointer;
}
.tabs button[aria-selected="true"] { color: var(--code-ink); background: #ffffff10; }
pre { margin: 0; padding: 18px 20px 20px; overflow-x: auto; color: var(--code-ink); font-size: 13.5px; line-height: 1.6; }
.k { color: var(--code-k); } .t { color: var(--code-t); } .s { color: var(--code-s); } .n { color: var(--code-n); } .c { color: var(--code-c); }

.block { padding-top: 56px; padding-bottom: 8px; }
h2 { font-size: clamp(24px, 3.4vw, 32px); letter-spacing: -0.02em; margin: 0 0 12px; line-height: 1.2; }
.intro { color: var(--muted); max-width: 70ch; margin: 0 0 28px; }

.roles { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); }
.roles article { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 18px; }
.roles h3 { margin: 0; font: 600 15px/1.3 ui-monospace, "SF Mono", Menlo, monospace; }
.roles .who { margin: 2px 0 10px; color: var(--accent); font-size: 13px; }
.roles p:last-child { margin: 0; color: var(--muted); font-size: 14.5px; }

.ladder { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; counter-reset: rung; }
.ladder li {
  display: grid; grid-template-columns: 1fr auto; gap: 4px 16px; align-items: center;
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px;
}
@media (min-width: 720px) { .ladder li { grid-template-columns: 180px 1fr auto; } }
.tier { font-weight: 600; }
.what { color: var(--muted); font-size: 14.5px; grid-column: 1 / -1; }
@media (min-width: 720px) { .what { grid-column: auto; } }
.ladder .state { grid-row: 1; grid-column: 2; justify-self: end; }
@media (min-width: 720px) { .ladder .state { grid-column: 3; } }

.state { display: inline-block; font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 999px; white-space: nowrap; }
.state.ok { color: var(--ok); background: var(--ok-soft); }
.state.wip { color: var(--wip); background: var(--wip-soft); }
.state.plan { color: var(--plan); background: var(--plan-soft); }

.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: 14.5px; min-width: 620px; }
th, td { text-align: left; padding: 11px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); font-weight: 600; }
tbody tr:last-child td { border-bottom: 0; }
td:first-child { font-weight: 600; }
table.compact { min-width: 560px; }

.stats { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); margin-bottom: 16px; }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 18px; display: grid; gap: 4px; }
.stat .v { font-size: 34px; font-weight: 700; letter-spacing: -0.03em; color: var(--accent); font-variant-numeric: tabular-nums; }
.stat .l { color: var(--muted); font-size: 14px; }

.split { display: grid; gap: 40px; }
@media (min-width: 900px) { .split { grid-template-columns: 1fr 1fr; } }
.split p { color: var(--muted); margin: 0 0 16px; }
.cli { background: var(--code-bg); border-radius: 12px; border: 1px solid var(--line); }

.phases { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; border-left: 2px solid var(--line); margin-left: 15px; }
.phases li { display: flex; gap: 18px; align-items: flex-start; padding: 0 0 22px 0; position: relative; }
.phases .n {
  flex: none; width: 30px; height: 30px; margin-left: -16px; border-radius: 50%;
  display: grid; place-items: center; font-size: 13px; font-weight: 700;
  background: var(--surface); border: 2px solid var(--line); color: var(--muted);
}
.phases li.done .n { background: var(--ok-soft); border-color: var(--ok); color: var(--ok); }
.phases li.now .n { background: var(--accent); border-color: var(--accent); color: #fff; }
.phases strong { display: block; }
.phases span:not(.n) { color: var(--muted); font-size: 14.5px; }
.phases div { padding-top: 3px; }

.foot { padding-top: 48px; padding-bottom: 56px; color: var(--muted); font-size: 13.5px; border-top: 1px solid var(--line); margin-top: 48px; }
.foot p { margin: 4px 0; }
td.na { color: var(--muted); font-style: italic; }