/* ============================================================
   Proposal 03 — "Guardrail"
   Swiss / security-advisory spec sheet. Hairline grid, IBM Plex,
   colour reserved for verdicts. No glow, no gradients.
   ============================================================ */
:root {
  --paper: #f2f2ee;
  --sheet: #f8f8f5;
  --ink: #121212;
  --muted: #5d5d58;
  --faint: #8f8f88;
  --line: #d4d4cc;
  --allow: #1c7a3b;
  --review: #9a6200;
  --block: #c1291a;
  --mark: #f6dfa0;
  --sans: "IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --w: min(1200px, 100% - 40px);
}
:root[data-theme="dark"] {
  --paper: #0f0f0e;
  --sheet: #151514;
  --ink: #ebebe5;
  --muted: #a2a29a;
  --faint: #6f6f69;
  --line: #2b2b28;
  --allow: #4cb36a;
  --review: #d99a2b;
  --block: #ef5b45;
  --mark: #5a4512;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--sans); font-size: 16px; line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; text-decoration-color: var(--faint); }
a:hover { text-decoration-color: var(--ink); }
button { font: inherit; color: inherit; }
::selection { background: var(--mark); }

.wrap { width: var(--w); margin: 0 auto; }
.mono { font-family: var(--mono); }

/* ---------- masthead ---------- */
.mast { border-bottom: 1px solid var(--ink); }
.mast .wrap { display: grid; grid-template-columns: 1fr auto; gap: 8px 24px; align-items: end; padding: 22px 0 14px; }
.mast h1 { margin: 0; font-size: clamp(30px, 5.4vw, 64px); font-weight: 500; letter-spacing: -0.03em; line-height: 0.95; }
.mast .role { grid-column: 1; font-size: 15px; color: var(--muted); }
.mast .role b { color: var(--ink); font-weight: 500; }
.mast nav { grid-column: 2; grid-row: 1 / span 2; display: flex; gap: 18px; align-self: end; font-family: var(--mono); font-size: 12.5px; }
.mast nav a { text-decoration: none; color: var(--muted); }
.mast nav a:hover { color: var(--ink); }
.tbtn { background: none; border: 1px solid var(--line); padding: 2px 8px; cursor: pointer; font-family: var(--mono); font-size: 12px; color: var(--muted); }
.tbtn:hover { color: var(--ink); border-color: var(--ink); }
.strip { border-bottom: 1px solid var(--line); font-family: var(--mono); font-size: 11.5px; color: var(--faint); }
.strip .wrap { display: flex; justify-content: space-between; gap: 16px; padding: 7px 0; flex-wrap: wrap; }
@media (max-width: 760px) {
  .mast .wrap { grid-template-columns: 1fr; }
  .mast nav { grid-column: 1; grid-row: auto; flex-wrap: wrap; }
}

/* ---------- sections ---------- */
section { border-bottom: 1px solid var(--line); }
.sec { display: grid; grid-template-columns: 180px 1fr; gap: 24px; padding: 40px 0 48px; }
.sec > .lbl { font-family: var(--mono); font-size: 12px; color: var(--faint); text-transform: uppercase; letter-spacing: .08em; }
.sec > .lbl b { display: block; color: var(--ink); font-weight: 500; font-size: 13px; letter-spacing: .04em; margin-top: 4px; }
@media (max-width: 760px) { .sec { grid-template-columns: 1fr; gap: 14px; padding: 30px 0 36px; } }

h2 { font-size: clamp(24px, 3.4vw, 36px); font-weight: 500; letter-spacing: -0.02em; line-height: 1.1; margin: 0 0 12px; }
.lead { font-size: 18px; max-width: 58ch; margin: 0; }
.dim { color: var(--muted); }

/* ---------- demo ---------- */
.demo { display: grid; grid-template-columns: minmax(260px, 5fr) 7fr; gap: 0; border: 1px solid var(--ink); background: var(--sheet); margin-top: 26px; }
.demo .side { padding: 20px; border-right: 1px solid var(--line); }
.demo .main { padding: 20px; min-width: 0; }
@media (max-width: 880px) { .demo { grid-template-columns: 1fr; } .demo .side { border-right: 0; border-bottom: 1px solid var(--line); } }

.kicker { font-family: var(--mono); font-size: 11.5px; text-transform: uppercase; letter-spacing: .08em; color: var(--faint); margin: 0 0 8px; }
.caps { list-style: none; padding: 0; margin: 0 0 22px; font-family: var(--mono); font-size: 13px; }
.caps li { display: flex; justify-content: space-between; gap: 10px; padding: 6px 0; border-bottom: 1px dashed var(--line); }
.caps li span:last-child { color: var(--faint); }
.presets { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; }
.presets button { background: none; border: 0; padding: 3px 0; cursor: pointer; font-family: var(--mono); font-size: 13px; text-align: left; color: var(--ink); }
.presets button::before { content: "→ "; color: var(--faint); }
.presets button:hover, .presets button[aria-pressed="true"] { text-decoration: underline; text-underline-offset: 3px; }
.presets button[aria-pressed="true"]::before { color: var(--ink); }

label.kicker { display: block; }
textarea {
  width: 100%; min-height: 108px; resize: vertical; display: block;
  font-family: var(--mono); font-size: 14px; line-height: 1.55; color: var(--ink);
  background: var(--paper); border: 1px solid var(--line); padding: 12px; outline: none;
}
textarea:focus { border-color: var(--ink); }

.verdict { display: grid; grid-template-columns: auto 1fr; gap: 4px 20px; align-items: end; margin: 20px 0 6px; }
.verdict .v { font-size: clamp(34px, 5vw, 52px); font-weight: 600; letter-spacing: -0.02em; line-height: 0.9; }
.verdict .v[data-v="ALLOW"] { color: var(--allow); }
.verdict .v[data-v="REVIEW"] { color: var(--review); }
.verdict .v[data-v="BLOCK"] { color: var(--block); }
.verdict .sc { font-family: var(--mono); font-size: 13px; color: var(--muted); }
.meter { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(20, 1fr); gap: 3px; margin-top: 10px; }
.meter i { height: 8px; background: var(--line); }
.meter i.on { background: var(--ink); }
.meter[data-v="ALLOW"] i.on { background: var(--allow); }
.meter[data-v="REVIEW"] i.on { background: var(--review); }
.meter[data-v="BLOCK"] i.on { background: var(--block); }
.decision { font-size: 15px; margin: 12px 0 0; }
.timing { font-family: var(--mono); font-size: 12px; color: var(--faint); margin-top: 6px; }

.echo { margin-top: 18px; font-family: var(--mono); font-size: 13px; line-height: 1.6; padding: 10px 12px; border-left: 2px solid var(--line); white-space: pre-wrap; word-break: break-word; color: var(--muted); min-height: 1.6em; }
.echo mark { background: var(--mark); color: var(--ink); padding: 0 1px; }
.echo mark sup { font-size: 9px; color: var(--muted); margin-left: 1px; }

.trace { width: 100%; border-collapse: collapse; margin-top: 18px; font-size: 13px; }
.trace th { text-align: left; font-family: var(--mono); font-weight: 400; font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--faint); padding: 6px 8px 6px 0; border-bottom: 1px solid var(--ink); }
.trace td { padding: 7px 8px 7px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.trace td.id, .trace td.w, .trace td.r { font-family: var(--mono); }
.trace td.w { color: var(--faint); text-align: right; padding-right: 0; }
.trace tr.hit td.r { color: var(--block); }
.trace tr.pass td { color: var(--faint); }
.trace .why { display: block; color: var(--muted); font-size: 12.5px; margin-top: 2px; }
@media (max-width: 520px) { .trace td.w, .trace th.w { display: none; } }

.note { font-size: 13px; color: var(--muted); margin: 18px 0 0; max-width: 70ch; }

/* ---------- record (experience) ---------- */
.rec { width: 100%; border-collapse: collapse; }
.rec details { border-top: 1px solid var(--line); }
.rec details:last-child { border-bottom: 1px solid var(--line); }
.rec summary { list-style: none; cursor: pointer; display: grid; grid-template-columns: 150px 1fr 1fr 22px; gap: 16px; padding: 13px 0; align-items: baseline; }
.rec summary::-webkit-details-marker { display: none; }
.rec summary:hover .org { text-decoration: underline; text-underline-offset: 3px; }
.rec .per { font-family: var(--mono); font-size: 12.5px; color: var(--muted); }
.rec .org { font-weight: 500; }
.rec .org small { font-family: var(--mono); font-size: 10.5px; font-weight: 400; color: var(--allow); margin-left: 8px; letter-spacing: .06em; }
.rec .ttl { color: var(--muted); font-size: 14.5px; }
.rec .pm { font-family: var(--mono); color: var(--faint); text-align: right; }
.rec details[open] .pm::after { content: "−"; }
.rec details:not([open]) .pm::after { content: "+"; }
.rec .body { padding: 0 0 16px 166px; }
.rec .body ul { margin: 0 0 10px; padding-left: 18px; max-width: 72ch; }
.rec .body li { margin: 3px 0; }
.rec .body .stk { font-family: var(--mono); font-size: 12px; color: var(--faint); }
@media (max-width: 760px) {
  .rec summary { grid-template-columns: 1fr 22px; gap: 2px 12px; }
  .rec .per { grid-column: 1; order: 3; }
  .rec .ttl { grid-column: 1; order: 2; }
  .rec .pm { grid-column: 2; grid-row: 1; }
  .rec .body { padding-left: 0; }
}

/* ---------- work ---------- */
.work { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.work article { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 18px 18px 20px; display: flex; flex-direction: column; gap: 8px; }
.work .n { font-family: var(--mono); font-size: 11.5px; color: var(--faint); }
.work h3 { margin: 0; font-size: 20px; font-weight: 500; letter-spacing: -0.01em; }
.work p { margin: 0; color: var(--muted); font-size: 14.5px; flex: 1; }
.work .stk { font-family: var(--mono); font-size: 12px; color: var(--faint); }
.work .lx { font-family: var(--mono); font-size: 13px; display: flex; gap: 14px; flex-wrap: wrap; }
@media (max-width: 680px) { .work { grid-template-columns: 1fr; } }

.wcard { display: grid; grid-template-columns: 160px 1fr; gap: 16px; align-items: center; border: 1px solid var(--line); padding: 10px; text-decoration: none; max-width: 640px; background: var(--sheet); }
.wcard:hover { border-color: var(--ink); }
.wcard img { width: 100%; aspect-ratio: 1200 / 630; object-fit: cover; display: block; }
.wcard .src { font-family: var(--mono); font-size: 11.5px; color: var(--faint); }
.wcard .t { font-size: 18px; font-weight: 500; margin-top: 3px; line-height: 1.25; }
@media (max-width: 520px) { .wcard { grid-template-columns: 1fr; } }

.contact { font-family: var(--mono); font-size: 14.5px; list-style: none; padding: 0; margin: 0; max-width: 560px; }
.contact li { display: grid; grid-template-columns: 110px 1fr; padding: 9px 0; border-bottom: 1px solid var(--line); }
.contact li:first-child { border-top: 1px solid var(--line); }
.contact li span { color: var(--faint); }

footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding: 18px 0 40px; font-family: var(--mono); font-size: 11.5px; color: var(--faint); }

@media (max-width: 880px) {
  .presets { flex-direction: row; flex-wrap: wrap; gap: 4px 16px; }
  .caps { margin-bottom: 16px; }
}

.kicker.spaced { margin: 18px 0 0; }
.rec .rec-card { margin-top: 14px; }
.nojs { max-width: 680px; margin: 30px auto; padding: 0 20px; }