:root {
  --bg: #0f1115;
  --panel: #181b22;
  --panel2: #1f232c;
  --line: #2a2f3a;
  --text: #e6e9ef;
  --muted: #9aa3b2;
  --accent: #5b9dff;
  --gate: #ffb340;
  --gate-bg: #2a2114;
  --ok: #56d364;
  --code: #11141a;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang TC", "Microsoft JhengHei", sans-serif;
}
.wrap { max-width: 980px; margin: 0 auto; padding: 0 20px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: var(--code); padding: 1px 5px; border-radius: 4px; font-size: 0.88em; }
.muted { color: var(--muted); }
.hidden { display: none !important; }

header.site { border-bottom: 1px solid var(--line); background: #0c0e12; }
header .wrap { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.brand { display: flex; align-items: center; gap: 12px; }
.logo { font-weight: 700; letter-spacing: 0.5px; }
.badge { font-size: 11px; padding: 3px 8px; border-radius: 999px; border: 1px solid var(--line); }
.badge.demo { color: var(--gate); border-color: #4a3c1d; background: var(--gate-bg); }
.head-right { display: flex; align-items: center; gap: 12px; }
button.lang { font: inherit; cursor: pointer; background: var(--panel2); color: var(--text); border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; font-size: 13px; }
button.lang:hover { border-color: #3a414f; }

.intro { padding: 34px 0 8px; }
h1 { font-size: 26px; margin: 0 0 6px; line-height: 1.25; }
.headline { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0; }
.headline .kpi { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; min-width: 110px; }
.headline .kpi .v { font-size: 18px; font-weight: 700; }
.headline .kpi .l { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.4px; }
.note { background: var(--panel); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 8px; padding: 12px 14px; color: var(--muted); font-size: 13.5px; }
.note strong { color: var(--text); }

/* pre-run preparation checklist */
.prep { margin: 24px 0 6px; border-left: 3px solid var(--accent); }
.prep.locked { opacity: 0.7; }
.prep-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.prep h2 { font-size: 18px; margin: 0; }
.prep p { font-size: 13px; }
#prep-list { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.prep-item { display: flex; gap: 10px; align-items: flex-start; background: var(--panel2); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; cursor: pointer; }
.prep-item input { margin-top: 3px; }
.prep-title { font-weight: 600; font-size: 14px; }
.prep-title .req { font-size: 10px; color: var(--gate); border: 1px solid #4a3c1d; border-radius: 4px; padding: 0 5px; margin-left: 6px; text-transform: uppercase; letter-spacing: 0.4px; }
.prep-detail { font-size: 13px; color: var(--muted); margin: 3px 0; }
.prep-basis { font-size: 11px; color: #6f7787; font-family: ui-monospace, Menlo, monospace; }

.controls { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 18px 0 8px; }
button { font: inherit; cursor: pointer; border-radius: 8px; border: 1px solid var(--line); background: var(--panel2); color: var(--text); padding: 8px 14px; }
button:hover { border-color: #3a414f; }
button.primary { background: var(--accent); border-color: var(--accent); color: #06204a; font-weight: 600; }
button.ghost { background: transparent; color: var(--muted); }
button:disabled { opacity: 0.45; cursor: default; }

button.small { padding: 6px 11px; font-size: 13px; }
.counter { font-size: 12.5px; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px; background: var(--panel); }

.progress { display: flex; gap: 6px; flex: 1; min-width: 240px; }
.progress .seg { flex: 1; height: 8px; border-radius: 4px; background: var(--panel2); border: 1px solid var(--line); position: relative; }
.progress .seg.done { background: var(--ok); border-color: var(--ok); }
.progress .seg.active { background: var(--accent); border-color: var(--accent); }
.progress .seg.gate { background: var(--gate); border-color: var(--gate); }

.stages { display: flex; flex-direction: column; gap: 14px; margin: 20px 0 36px; }
.stage { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; display: none; }
.stage.shown { display: block; }
.stage.done { opacity: 0.62; }
.stage.active { border-color: var(--accent); box-shadow: 0 0 0 1px rgba(91,157,255,0.25); }
.stage.done::after { content: "✓ done"; display: inline-block; margin-top: 8px; font-size: 11px; color: var(--ok); }
.stage .head { display: flex; align-items: baseline; gap: 10px; }
.stage .num { font-variant-numeric: tabular-nums; color: var(--muted); font-weight: 700; }
.stage h2 { font-size: 17px; margin: 0; }
.stage .skill { margin-left: auto; font-size: 12px; color: var(--muted); }
.stage .summary { color: var(--muted); margin: 8px 0 0; font-size: 13.5px; }
.metrics { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 0; }
.metrics .m { font-size: 12.5px; background: var(--panel2); border: 1px solid var(--line); border-radius: 6px; padding: 5px 9px; }
.metrics .m b { color: var(--text); }

.gate { margin: 14px 0 0; border: 1px solid #4a3c1d; background: var(--gate-bg); border-radius: 10px; padding: 12px 14px; }
.gate .gh { display: flex; align-items: center; gap: 8px; color: var(--gate); font-weight: 700; font-size: 13px; }
.gate .gl { font-weight: 600; margin: 6px 0 2px; }
.gate .gd { color: var(--muted); font-size: 13px; }
.gate .ghost-input { margin-top: 10px; border: 1px dashed #5a4a26; border-radius: 8px; padding: 12px; color: var(--muted); font-size: 13px; background: rgba(0,0,0,0.15); }
.gate .ghost-input.upload { text-align: center; }

.artifacts { margin: 14px 0 0; display: flex; flex-direction: column; gap: 8px; }
details.art { border: 1px solid var(--line); border-radius: 8px; background: var(--panel2); }
details.art > summary { cursor: pointer; padding: 8px 12px; font-size: 13px; display: flex; align-items: center; gap: 8px; }
details.art > summary .kind { font-size: 10px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--muted); border: 1px solid var(--line); border-radius: 4px; padding: 1px 5px; }
.preview { margin: 0; padding: 12px; background: var(--code); border-top: 1px solid var(--line); border-radius: 0 0 8px 8px; overflow-x: auto; font-size: 12px; line-height: 1.5; white-space: pre-wrap; word-break: break-word; max-height: 360px; }

/* action zone + gate controls (you operate these by hand) */
.actionzone { margin-top: 14px; }
.actionzone:empty { margin-top: 0; }
.stage.done .actionzone { display: none; }
.gbadge { font-size: 10px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--gate); border: 1px solid #4a3c1d; border-radius: 4px; padding: 1px 6px; margin-right: 8px; }
.gbasis { font-size: 11px; color: #6f7787; font-family: ui-monospace, Menlo, monospace; margin-top: 6px; }
.gate.type-checkpoint { border-color: #2f4a6b; background: rgba(91,157,255,0.06); }
.gate.type-checkpoint .gh { color: var(--accent); }
.gate.type-checkpoint .gbadge { color: var(--accent); border-color: #2f4a6b; }
.gctl-hint { font-size: 12px; color: var(--muted); }
.gctl { border: 1px solid var(--gate); border-radius: 10px; padding: 12px; margin-top: 10px; background: rgba(255,179,64,0.06); display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }
.gate.type-checkpoint .gctl { border-color: #2f4a6b; background: rgba(91,157,255,0.06); }
.gctl-ta, .gctl textarea { width: 100%; background: var(--code); color: var(--text); border: 1px solid var(--line); border-radius: 8px; padding: 8px; font: 12px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; }
.gctl-radios { display: flex; gap: 16px; font-size: 14px; }
.gctl-radios label, .gctl-check { display: flex; align-items: center; gap: 6px; cursor: pointer; }
.gctl-drop { border: 1px dashed var(--gate); border-radius: 8px; padding: 14px; text-align: center; cursor: pointer; color: var(--muted); font-size: 13px; width: 100%; }

/* LLM configuration reveal */
.llm { margin: 14px 0 0; border: 1px solid var(--line); border-radius: 10px; padding: 14px; background: var(--panel2); }
.llm-h { font-weight: 700; font-size: 13.5px; }
.llm-src { font-size: 12px; color: var(--muted); margin: 4px 0 10px; }
.llm-field { display: block; margin: 8px 0; }
.llm-field > span { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: 0.4px; color: var(--muted); margin-bottom: 4px; }
.llm-input { width: 100%; background: var(--code); color: var(--text); border: 1px solid var(--line); border-radius: 6px; padding: 7px 9px; font: 13px ui-monospace, Menlo, monospace; }
.llm-prompt { width: 100%; background: var(--code); color: var(--text); border: 1px solid var(--line); border-radius: 6px; padding: 9px; font: 12px/1.5 ui-monospace, Menlo, monospace; resize: vertical; }
.llm-actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 8px 0 4px; }
.llm-note { font-size: 12px; color: var(--gate); }
.llm-mech { font-size: 13px; color: var(--muted); margin-top: 12px; border-left: 3px solid var(--gate); padding-left: 10px; }
.llm-decisions { margin-top: 12px; }
.llm-cap { font-size: 12.5px; color: var(--muted); margin-bottom: 6px; }
.dtbl { border-collapse: collapse; font-size: 13px; }
.dtbl th, .dtbl td { border: 1px solid var(--line); padding: 5px 12px; text-align: center; }
.dtbl th { color: var(--muted); font-weight: 600; text-transform: uppercase; font-size: 11px; letter-spacing: 0.4px; }
.dtbl td:first-child, .dtbl th:first-child { text-align: left; }

.output { margin: 10px 0 36px; }
.output h2 { font-size: 20px; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 760px) { .grid { grid-template-columns: 1fr; } }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; margin-bottom: 14px; }
.card h3 { margin: 0 0 10px; font-size: 15px; }
.prisma { background: #fff; border-radius: 8px; padding: 8px; overflow: auto; }
.prisma svg { max-width: 100%; height: auto; }
.downloads { margin: 0; padding-left: 18px; }
.downloads li { margin: 4px 0; }
.downloads .note { display: inline; background: none; border: none; padding: 0; font-size: 12px; }

/* our suggestions (deploy-only; not in the PR) */
.suggest { border-left: 3px solid var(--gate); }
.suggest h2 { font-size: 18px; margin-top: 0; }
#suggest-list { display: flex; flex-direction: column; gap: 10px; margin-top: 8px; }
.suggest-item { background: var(--gate-bg); border: 1px solid #4a3c1d; border-radius: 8px; padding: 11px 13px; }
.suggest-h { font-weight: 600; font-size: 14px; }
.sbadge { font-size: 10px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--gate); border: 1px solid #4a3c1d; border-radius: 4px; padding: 1px 6px; margin-right: 8px; }
.suggest-where { font-size: 12px; color: var(--muted); margin: 3px 0; }
.suggest-why { font-size: 13px; color: var(--text); }

.contrast { border-left: 3px solid var(--accent); }
.contrast h2 { font-size: 18px; margin-top: 0; }
.foot { border-top: 1px solid var(--line); border-bottom: none; margin-top: 20px; }
.foot .wrap { padding: 16px 20px; font-size: 12.5px; }
.gen { display: block; margin-top: 4px; opacity: 0.6; }