:root {
  color-scheme: dark;
  --ink: #f1f0e9;
  --muted: #9da3a3;
  --dim: #696f70;
  --bg: #090b0c;
  --panel: #111416;
  --panel-2: #161a1d;
  --line: #2a3033;
  --blue: #67c1f5;
  --blue-deep: #1a6f9e;
  --amber: #f4ba5c;
  --coral: #ff6b5e;
  --green: #82d6a2;
  --radius: 18px;
  --shadow: 0 24px 80px rgba(0, 0, 0, .35);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    radial-gradient(circle at 76% 2%, rgba(48, 120, 158, .16), transparent 25rem),
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px), var(--bg);
  background-size: auto, 32px 32px, 32px 32px, auto;
  line-height: 1.55;
}

a { color: inherit; }
button, input { font: inherit; }
button { color: inherit; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 100; padding: .75rem 1rem; background: var(--ink); color: var(--bg); }
.skip-link:focus { top: 1rem; }

.site-header {
  width: min(1440px, calc(100% - 3rem));
  margin: 0 auto;
  height: 86px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.brand { display: flex; align-items: center; gap: .8rem; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid var(--blue); border-radius: 50%; color: var(--blue); font-weight: 900; letter-spacing: -.08em; }
.brand strong { display: block; font-size: 1.05rem; letter-spacing: .04em; }
.brand small { display: block; color: var(--muted); font-size: .64rem; letter-spacing: .18em; text-transform: uppercase; }
nav { display: flex; align-items: center; gap: 1.5rem; }
nav a { color: var(--muted); text-decoration: none; font-size: .86rem; }
nav a:hover, nav a:focus-visible { color: var(--ink); }
.nav-cta { padding: .58rem .85rem; border: 1px solid var(--line); border-radius: 8px; }

.hero {
  width: min(1320px, calc(100% - 3rem));
  min-height: 690px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: clamp(3rem, 8vw, 9rem);
  align-items: center;
  padding: 7rem 0 8rem;
}
.overline { margin: 0 0 .7rem; color: var(--blue); font-size: .68rem; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.hero h1 { margin: 0; max-width: 820px; font-family: "Arial Narrow", "Roboto Condensed", Impact, sans-serif; font-size: clamp(3.7rem, 7vw, 7.8rem); line-height: .88; letter-spacing: -.045em; text-transform: uppercase; }
.hero h1 em { color: transparent; -webkit-text-stroke: 1px var(--blue); font-style: normal; }
.hero-lede { max-width: 680px; margin: 2rem 0 0; color: #c2c6c5; font-size: clamp(1rem, 1.6vw, 1.22rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: .72rem 1rem; border: 1px solid var(--line); border-radius: 10px; background: transparent; text-decoration: none; cursor: pointer; transition: transform .16s ease, border-color .16s ease, background .16s ease; }
.button:hover { transform: translateY(-1px); border-color: #536066; }
.button.primary { color: #051014; background: var(--blue); border-color: var(--blue); font-weight: 800; }
.button.ghost { color: var(--ink); background: rgba(255,255,255,.025); }
.button.small { min-height: 38px; padding: .5rem .75rem; font-size: .78rem; }
.trust-row { display: flex; flex-wrap: wrap; gap: 1.5rem; margin: 2.3rem 0 0; padding: 0; list-style: none; color: var(--dim); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; }
.trust-row li::before { content: "✓"; margin-right: .4rem; color: var(--green); }

.hero-instrument { position: relative; padding: 1rem; border: 1px solid #344047; background: linear-gradient(145deg, rgba(30,36,39,.92), rgba(11,13,14,.96)); border-radius: 24px 24px 6px 24px; box-shadow: var(--shadow); transform: rotate(1.5deg); }
.hero-instrument::before { content: ""; position: absolute; inset: 8px; pointer-events: none; border: 1px solid rgba(255,255,255,.04); border-radius: 18px 18px 3px 18px; }
.instrument-head { display: flex; justify-content: space-between; padding: .35rem .5rem 1rem; color: var(--muted); font: 700 .68rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .14em; }
.live-dot { color: var(--green); }
.live-dot::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: .45rem; border-radius: 50%; background: var(--green); box-shadow: 0 0 12px var(--green); }
.trace-line { display: grid; grid-template-columns: 34px 1fr 70px 1.1fr; gap: .7rem; align-items: center; min-height: 72px; padding: 0 1rem; border-top: 1px solid var(--line); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.trace-line span { color: var(--dim); font-size: .72rem; }
.trace-line b { font-size: .8rem; letter-spacing: .08em; }
.trace-line i { display: block; height: 1px; background: linear-gradient(90deg, var(--blue), transparent); }
.trace-line small { color: var(--muted); }
.instrument-callout { margin-top: 1rem; padding: 1rem; border-radius: 12px; background: var(--blue); color: #071116; }
.instrument-callout span { display: block; font-size: .62rem; font-weight: 900; text-transform: uppercase; letter-spacing: .15em; }
.instrument-callout strong { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .88rem; }

.checker-shell { width: min(1440px, calc(100% - 2rem)); margin: 0 auto 5rem; padding: clamp(1rem, 3vw, 2.5rem); border: 1px solid var(--line); border-radius: 28px; background: rgba(13,16,18,.94); box-shadow: var(--shadow); }
.checker-topbar, .results-header { display: flex; align-items: end; justify-content: space-between; gap: 2rem; }
.checker-topbar h2, .results-header h2 { margin: 0; font-family: "Arial Narrow", "Roboto Condensed", sans-serif; font-size: clamp(2rem, 4vw, 3.8rem); line-height: 1; letter-spacing: -.035em; text-transform: uppercase; }
.progress-block { min-width: 220px; color: var(--muted); font-size: .78rem; text-align: right; }
.progress-track { height: 4px; margin-top: .65rem; overflow: hidden; border-radius: 99px; background: var(--line); }
.progress-track i { display: block; width: 0; height: 100%; background: var(--blue); transition: width .25s ease; }

.safety-banner { grid-template-columns: auto 1fr; gap: 1rem; align-items: start; margin: 1.5rem 0; padding: 1rem; border: 1px solid rgba(255,107,94,.55); border-radius: 14px; background: rgba(255,107,94,.08); }
.safety-banner:not([hidden]) { display: grid; }
.safety-icon { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; color: var(--bg); background: var(--coral); font-weight: 950; }
.safety-banner p { margin: .25rem 0 0; color: #efb8b2; }

.suggestion-empty { color: var(--dim); font-size: .84rem; }

.guided-triage { margin-top: 2rem; border: 1px solid #344047; border-radius: 22px; background: linear-gradient(145deg, rgba(19,24,27,.98), rgba(11,14,16,.98)); overflow: hidden; }
.path-bar { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .9rem 1.15rem; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.015); }
.path-label { display: block; margin-bottom: .25rem; color: var(--dim); font: 800 .6rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .14em; text-transform: uppercase; }
.path-trail { display: flex; flex-wrap: wrap; align-items: center; gap: .45rem; }
.path-trail button, .path-trail span { padding: 0; border: 0; color: var(--muted); background: none; font-size: .76rem; }
.path-trail button { color: var(--blue); cursor: pointer; }
.path-trail i { color: #4c5559; font-style: normal; }
.guided-stage { min-height: 430px; padding: clamp(1.25rem, 4vw, 3rem); }
.stage-heading { display: grid; grid-template-columns: 54px minmax(0, 1fr); gap: 1rem; max-width: 900px; margin-bottom: 1.5rem; }
.stage-heading h3, .stage-complete h3 { margin: 0; font-family: "Arial Narrow", "Roboto Condensed", sans-serif; font-size: clamp(1.8rem, 3.5vw, 3rem); line-height: 1; letter-spacing: -.025em; text-transform: uppercase; }
.stage-heading p:not(.overline), .stage-complete > p:not(.overline) { max-width: 720px; margin: .55rem 0 0; color: var(--muted); }
.step-number { display: grid; place-items: center; width: 48px; height: 48px; border: 1px solid #41505a; border-radius: 50%; color: var(--blue); font: 850 .72rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; }
.category-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .75rem; }
.category-card { position: relative; min-height: 180px; padding: 1rem 2.7rem 1rem 1rem; text-align: left; border: 1px solid #30393e; border-radius: 14px; color: var(--ink); background: #0d1113; cursor: pointer; transition: transform .16s ease, border-color .16s ease, background .16s ease; }
.category-card:hover, .category-card:focus-visible { transform: translateY(-2px); border-color: var(--blue); background: #111a1f; }
.category-code { display: block; margin-bottom: 2.2rem; color: var(--blue); font: 800 .62rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .14em; }
.category-card strong { display: block; font-size: 1.1rem; }
.category-card small { display: block; margin-top: .35rem; color: var(--muted); font-size: .76rem; }
.category-arrow { position: absolute; right: 1rem; bottom: 1rem; color: var(--blue); font-size: 1.3rem; }
.safety-shortcut { width: 100%; display: flex; justify-content: space-between; gap: 1rem; margin-top: .8rem; padding: .75rem 1rem; text-align: left; border: 1px solid rgba(255,107,94,.28); border-radius: 10px; color: #dca6a1; background: rgba(255,107,94,.035); cursor: pointer; }
.safety-shortcut span { color: #9e716d; font-size: .75rem; }
.symptom-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .75rem; max-width: 1120px; }
.symptom-card { min-height: 150px; display: flex; flex-direction: column; justify-content: space-between; padding: 1rem; text-align: left; border: 1px solid #334047; border-radius: 14px; color: var(--ink); background: #0e1316; cursor: pointer; }
.symptom-card:hover, .symptom-card:focus-visible { border-color: var(--blue); background: #121c21; }
.symptom-card strong { font-size: 1.02rem; line-height: 1.35; }
.symptom-card span { color: var(--blue); font-size: .74rem; }
.guided-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .65rem; max-width: 1080px; }
.guided-option { min-height: 88px; }
.guided-option > span { display: block; }
.guided-option > small { display: block; margin-top: .3rem; padding-right: 1rem; color: #78919c; font-size: .68rem; }
.option-card .blocked-copy { color: #8d6562; }
.option-card:disabled { opacity: .38; cursor: not-allowed; border-style: dashed; }
.option-card:disabled::after { content: "×"; display: grid; place-items: center; border: 0; color: var(--coral); font-size: .9rem; transform: translateY(-50%); }
.stage-actions { display: flex; align-items: center; gap: .75rem; margin-top: 1.25rem; }
.stage-actions.split { max-width: 1080px; justify-content: space-between; }
.stage-actions > span { color: var(--dim); font-size: .72rem; }
.stage-complete { max-width: 760px; margin: 2rem auto; text-align: center; }
.complete-mark { display: grid; place-items: center; width: 58px; height: 58px; margin: 0 auto 1rem; border: 1px solid var(--green); border-radius: 50%; color: var(--green); font-size: 1.4rem; }
.stage-complete .stage-actions { justify-content: center; }
.danger-stage .complete-mark { border-color: var(--coral); color: var(--coral); }

.all-checks { margin-top: 1rem; border: 1px solid var(--line); border-radius: 16px; background: #0d1012; }
.all-checks > summary { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1rem 1.15rem; cursor: pointer; list-style: none; }
.all-checks > summary::-webkit-details-marker { display: none; }
.all-checks > summary span:first-child { display: grid; }
.all-checks > summary strong { font-size: .95rem; }
.all-checks > summary small { color: var(--muted); font-size: .72rem; }
.all-checks-count { color: var(--blue); font: 750 .68rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; }
.all-checks-body { padding: 0 1rem 1rem; border-top: 1px solid var(--line); }
.checker-tools { display: flex; gap: .75rem; align-items: center; margin: 1rem 0; }
.search-box { flex: 1; display: flex; align-items: center; gap: .5rem; min-height: 42px; padding: 0 .8rem; border: 1px solid var(--line); border-radius: 10px; background: #0c0f11; }
.search-box input { width: 100%; border: 0; outline: 0; color: var(--ink); background: transparent; }
.text-button { border: 0; color: var(--blue); background: none; cursor: pointer; font-size: .78rem; }
.danger-text { color: #d98e87; }

.question-stack { display: grid; gap: .75rem; }
.advanced-group { border: 1px solid var(--line); border-radius: 12px; background: var(--panel); overflow: clip; }
.advanced-group[open] { border-color: #394248; }
.advanced-group > summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem; cursor: pointer; list-style: none; }
.advanced-group > summary::-webkit-details-marker { display: none; }
.advanced-group > summary span { display: grid; }
.advanced-group > summary b { font-size: .92rem; }
.advanced-group > summary small { color: var(--muted); font-size: .7rem; }
.advanced-group > summary em { color: var(--dim); font: 700 .66rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; font-style: normal; }
.advanced-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .55rem; padding: 0 .8rem .8rem; }
.danger-group[open] { border-color: rgba(255,107,94,.45); }
.option-card { position: relative; min-height: 64px; padding: .78rem 2.2rem .78rem .8rem; text-align: left; border: 1px solid #2c3337; border-radius: 10px; color: #bac0c0; background: #0d1012; cursor: pointer; transition: border-color .14s ease, color .14s ease, background .14s ease; }
.option-card::after { content: ""; position: absolute; right: .8rem; top: 50%; width: 14px; height: 14px; border: 1px solid #4b555a; border-radius: 3px; transform: translateY(-50%); }
.option-card:hover, .option-card:focus-visible { border-color: #526169; color: var(--ink); }
.option-card[aria-pressed="true"] { border-color: var(--blue); color: #e7f7ff; background: rgba(103,193,245,.09); }
.option-card[aria-pressed="true"]::after { border-color: var(--blue); background: var(--blue); box-shadow: inset 0 0 0 3px #101a1f; }
.danger-group .option-card[aria-pressed="true"] { border-color: var(--coral); background: rgba(255,107,94,.08); }
.danger-group .option-card[aria-pressed="true"]::after { border-color: var(--coral); background: var(--coral); }
.option-card[hidden], .advanced-group[hidden] { display: none; }

.results { margin-top: 3rem; padding-top: 2.5rem; border-top: 1px solid var(--line); }
.result-actions { display: flex; gap: .5rem; }
.os-warning { margin: 1rem 0; padding: .85rem 1rem; border-left: 3px solid var(--amber); color: #e4cfaa; background: rgba(244,186,92,.07); }
.result-grid { display: grid; grid-template-columns: 380px minmax(0, 1fr); gap: 1rem; margin-top: 1.5rem; }
.result-grid.single-column { grid-template-columns: 1fr; }
.constellation { min-height: 560px; padding: 1.2rem; border: 1px solid var(--line); border-radius: var(--radius); background: #0b0e10; }
.constellation[hidden] { display: none; }
.constellation h3 { margin: 0; }
.orbit { position: relative; width: 270px; height: 270px; margin: 2.2rem auto; border-radius: 50%; }
.orbit-ring { position: absolute; inset: 12%; border: 1px solid #263036; border-radius: 50%; }
.orbit-ring.two { inset: 30%; border-style: dashed; }
.orbit-core { position: absolute; inset: 43%; display: grid; place-items: center; border-radius: 50%; color: var(--dim); background: #181e21; font-weight: 900; }
.signal-node { --power: .25; position: absolute; display: grid; place-items: center; width: calc(45px + var(--power) * 25px); height: calc(45px + var(--power) * 25px); border: 1px solid currentColor; border-radius: 50%; opacity: calc(.4 + var(--power) * .6); transform: translate(-50%, -50%) scale(calc(.82 + var(--power) * .25)); transition: all .3s ease; box-shadow: 0 0 calc(var(--power) * 28px) color-mix(in srgb, currentColor 35%, transparent); }
.signal-node span { font: 850 .65rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; }
.signal-node.app { left: 20%; top: 26%; color: #a3dcae; }
.signal-node.os { left: 76%; top: 22%; color: var(--blue); }
.signal-node.path { left: 82%; top: 76%; color: var(--amber); }
.signal-node.hardware { left: 20%; top: 78%; color: var(--coral); }
.layer-legend { display: grid; gap: .5rem; }
.layer-row { display: grid; grid-template-columns: 72px 1fr 32px; align-items: center; gap: .5rem; font-size: .72rem; }
.layer-meter { height: 4px; background: #252b2e; }
.layer-meter i { display: block; height: 100%; background: var(--blue); }
.constellation-note { margin: 1rem 0 0; color: var(--dim); font-size: .72rem; }
.ranked-results { display: grid; gap: .75rem; align-content: start; }
.empty-result { min-height: 300px; display: grid; place-items: center; padding: 2rem; border: 1px dashed #374046; border-radius: var(--radius); color: var(--muted); text-align: center; }
.empty-result strong { display: block; color: var(--ink); font-size: 1.4rem; }
.result-card { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel-2); overflow: hidden; }
.result-card-head { display: grid; grid-template-columns: auto 1fr auto; gap: .85rem; align-items: start; padding: 1rem; }
.rank { display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid #465157; border-radius: 50%; font: 800 .72rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; }
.result-card h3 { margin: .2rem 0 0; font-size: 1.15rem; line-height: 1.25; }
.result-kicker { color: var(--blue); font-size: .64rem; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
.confidence { max-width: 170px; padding: .35rem .5rem; border: 1px solid #465157; border-radius: 999px; color: var(--muted); font-size: .66rem; text-align: center; }
.result-why { margin: 0; padding: 0 1rem 1rem 3.85rem; color: #b8bdbc; }
.result-card details { border-top: 1px solid var(--line); }
.result-card summary { padding: .75rem 1rem; color: var(--blue); cursor: pointer; font-size: .78rem; }
.result-detail { display: grid; grid-template-columns: repeat(3, 1fr); gap: .8rem; padding: 0 1rem 1rem; }
.result-detail h4 { margin: 0 0 .4rem; font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; }
.result-detail ul { margin: 0; padding-left: 1rem; color: var(--muted); font-size: .78rem; }
.avoid-box { margin: 0 1rem 1rem; padding: .7rem .8rem; border-left: 2px solid var(--coral); color: #dfaaa5; background: rgba(255,107,94,.05); font-size: .76rem; }
.result-link { display: inline-flex; margin: 0 1rem 1rem; color: var(--blue); font-size: .78rem; }
.case-digest { margin-top: 1rem; border: 1px solid var(--line); border-radius: 12px; }
.case-digest summary { display: flex; justify-content: space-between; padding: .8rem 1rem; cursor: pointer; }
.case-digest summary span { color: var(--muted); font-size: .74rem; }
#selected-facts { display: flex; flex-wrap: wrap; gap: .4rem; padding: 0 1rem 1rem; }
.fact-chip { display: inline-flex; align-items: center; gap: .4rem; padding: .35rem .5rem; border: 1px solid #374045; border-radius: 6px; color: #aeb5b4; background: #101416; cursor: pointer; font-size: .7rem; }
.fact-chip:hover, .fact-chip:focus-visible { border-color: var(--coral); }
.fact-chip span { color: var(--coral); }

.method-strip { width: min(1320px, calc(100% - 3rem)); margin: 0 auto 7rem; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.method-strip > div { padding: 2rem 1.5rem; border-right: 1px solid var(--line); }
.method-strip > div:last-child { border-right: 0; }
.method-strip span { color: var(--blue); font: 700 .68rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; }
.method-strip strong { display: block; margin-top: .8rem; font-family: "Arial Narrow", sans-serif; font-size: 1.4rem; text-transform: uppercase; }
.method-strip p { color: var(--muted); font-size: .82rem; }
footer { width: min(1320px, calc(100% - 3rem)); margin: 0 auto; padding: 2.5rem 0 3.5rem; display: grid; grid-template-columns: 1fr 1.5fr 1fr; gap: 2rem; color: var(--muted); border-top: 1px solid var(--line); font-size: .78rem; }
footer strong { color: var(--ink); font-size: 1rem; }
footer p { margin: .35rem 0; }
.footer-links { display: flex; justify-content: end; gap: 1rem; }
.noscript { position: fixed; inset: auto 1rem 1rem; padding: 1rem; background: var(--coral); color: #150302; text-align: center; }

@media (max-width: 1000px) {
  .hero { grid-template-columns: 1fr; min-height: auto; padding-top: 5rem; }
  .hero-instrument { max-width: 620px; }
  .category-grid, .advanced-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .result-grid { grid-template-columns: 1fr; }
  .constellation { min-height: auto; }
  .method-strip { grid-template-columns: repeat(2, 1fr); }
  .method-strip > div:nth-child(2) { border-right: 0; }
  footer { grid-template-columns: 1fr 1fr; }
  .footer-links { justify-content: start; }
}

@media (max-width: 680px) {
  .site-header { width: calc(100% - 2rem); height: 70px; }
  nav > a:not(.nav-cta) { display: none; }
  .hero { width: calc(100% - 2rem); gap: 3rem; padding: 4rem 0; }
  .hero h1 { font-size: clamp(3.2rem, 16vw, 5.5rem); }
  .trace-line { grid-template-columns: 28px 1fr; }
  .trace-line i, .trace-line small { display: none; }
  .checker-shell { width: calc(100% - 1rem); padding: 1rem; border-radius: 18px; }
  .checker-topbar, .results-header { align-items: start; flex-direction: column; gap: 1rem; }
  .progress-block { width: 100%; text-align: left; }
  .path-bar { align-items: flex-start; }
  .guided-stage { min-height: 0; padding: 1rem; }
  .stage-heading { grid-template-columns: 42px 1fr; }
  .step-number { width: 38px; height: 38px; }
  .category-grid, .symptom-grid, .guided-options, .advanced-grid { grid-template-columns: 1fr; }
  .category-card { min-height: 142px; }
  .safety-shortcut { flex-direction: column; }
  .stage-actions.split { display: grid; grid-template-columns: 1fr 1fr; }
  .stage-actions.split > span { grid-column: 1 / -1; grid-row: 1; }
  .stage-actions.split .button { width: 100%; }
  .checker-tools { flex-wrap: wrap; }
  .search-box { flex-basis: 100%; }
  .advanced-group summary { gap: 1rem; padding: 1rem; }
  .result-actions { width: 100%; }
  .result-actions .button { flex: 1; }
  .result-card-head { grid-template-columns: auto 1fr; }
  .confidence { grid-column: 2; }
  .result-why { padding-left: 1rem; }
  .result-detail { grid-template-columns: 1fr; }
  .method-strip { width: calc(100% - 2rem); grid-template-columns: 1fr; }
  .method-strip > div { border-right: 0; border-bottom: 1px solid var(--line); }
  footer { width: calc(100% - 2rem); grid-template-columns: 1fr; }
}

@media print {
  body { color: #111; background: #fff; }
  .site-header, .hero, .guided-triage, .all-checks, .checker-tools, .question-stack, .result-actions, .method-strip, footer { display: none !important; }
  .checker-shell { width: 100%; margin: 0; border: 0; box-shadow: none; background: #fff; }
  .results { border: 0; }
  .result-grid { grid-template-columns: 1fr; }
  .constellation { display: none; }
  .result-card { break-inside: avoid; color: #111; background: #fff; }
  .result-card details { display: block; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}