:root {
  --bg: #0A0A0A;
  --panel: #141414;
  --panel-2: #1C1C1C;
  --line: #2A2A2A;
  --text: #F2EFEA;
  --muted: #A29D94;
  --accent: #FFB547;
  --accent-ink: #1A1206;
  --urgent: #FF6B5E;
  --urgent-bg: #2A0F0C;
  --radius: 14px;
  --font: 'Archivo', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.5 var(--font); }
a { color: var(--accent); }
a:hover { color: #FFD08A; }
img, svg { max-width: 100%; }
main { display: block; max-width: 920px; margin: 0 auto; padding: 8px 16px 48px; outline: none; }
h1 { font-size: clamp(28px, 6vw, 44px); line-height: 1.1; margin: 16px 0 12px; font-weight: 800; letter-spacing: -0.01em; }
h2 { font-size: 22px; margin: 0 0 8px; font-weight: 800; }
h3 { font-size: 18px; margin: 0; font-weight: 700; }
h1:focus { outline: none; }
.lead { color: var(--muted); font-size: 18px; margin: 0 0 20px; }
.muted { color: var(--muted); font-weight: 400; font-size: 15px; }
.hint, .source { color: var(--muted); font-size: 15px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* logo lockup */
.lockup { display: inline-flex; align-items: center; gap: .35em; color: var(--text); line-height: .9; }
.wordmark { display: inline-flex; flex-direction: column; font-weight: 900; font-stretch: 125%; letter-spacing: -0.01em; }
.wordmark em { font-style: normal; color: var(--accent); }
.lockup-pack { height: 1.95em; width: auto; flex: none; }
.lockup-xs { font-size: 13px; }
.lockup-sm { font-size: 16px; }
.lockup-lg { font-size: clamp(34px, 9vw, 72px); }

/* header / footer */
.top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; max-width: 920px; margin: 0 auto; padding: 14px 16px; }
.brand { text-decoration: none; }
.top nav { display: flex; flex-wrap: wrap; gap: 6px; }
.top nav a { color: var(--text); text-decoration: none; padding: 10px 12px; border-radius: 10px; font-weight: 600; font-size: 15px; }
.top nav a:hover { background: var(--panel-2); }
.top nav .nav-go { background: var(--accent); color: var(--accent-ink); }
.foot { max-width: 920px; margin: 0 auto; padding: 24px 16px 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 15px; }
.foot p { margin: 4px 0; }
.foot-small { font-size: 13px; }
.linklike { background: none; border: 0; padding: 0; color: var(--accent); font: inherit; cursor: pointer; text-decoration: underline; min-height: 32px; }
.linklike.danger { color: #FF8F84; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 48px; padding: 12px 20px; border-radius: 12px; border: 2px solid transparent; font: 700 17px var(--font); text-decoration: none; cursor: pointer; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: #FFC56E; color: var(--accent-ink); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--muted); color: var(--text); }
.btn-go { background: var(--accent); color: var(--accent-ink); font-size: 20px; }
.btn-go:hover { color: var(--accent-ink); background: #FFC56E; }
.btn-block { display: flex; width: 100%; }
.btn-sm { min-height: 40px; padding: 8px 14px; font-size: 15px; }
.btn-xl { min-height: 72px; font-size: 22px; }
.btn[disabled], .btn.is-disabled { opacity: .4; pointer-events: none; }
.btn .ico { width: 22px; height: 22px; }
.row-btns { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 12px 0; }

/* home */
.hero { padding: 24px 0 8px; }
.hero-logo { margin: 8px 0 24px; }
.hero-hazards { font-size: clamp(26px, 5.4vw, 46px); }
.hero-sub { font-size: 19px; color: var(--muted); max-width: 640px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 20px 0; }
.band { margin: 40px 0; }
.cards { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.cards li { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.cards p { color: var(--muted); margin: 6px 0 0; }
.cards .num { display: inline-flex; width: 32px; height: 32px; border-radius: 50%; align-items: center; justify-content: center; background: var(--accent); color: var(--accent-ink); font-weight: 800; margin-bottom: 8px; }
.notice { border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; color: var(--muted); font-size: 15px; }

/* builder */
.progress { color: var(--muted); font-size: 14px; margin: 8px 0 4px; }
.progress-bar { list-style: none; display: flex; gap: 4px; padding: 0; margin: 0 0 8px; }
.progress-bar li { flex: 1; height: 4px; border-radius: 2px; background: var(--line); }
.progress-bar li.done { background: #8A6A33; }
.progress-bar li.here { background: var(--accent); }
.builder-nav { display: flex; justify-content: space-between; gap: 12px; margin: 32px 0 8px; position: sticky; bottom: 0; padding: 12px 0; background: linear-gradient(transparent, var(--bg) 30%); }
.group { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin: 16px 0; }
.group-intro { color: var(--muted); margin: 0 0 12px; font-size: 15px; }
.item { background: var(--panel-2); border: 1px solid var(--line); border-radius: 12px; padding: 14px; margin: 10px 0; }
.item-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 8px; margin-bottom: 8px; }
.item-grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); align-items: end; }
.btn-add { margin-top: 6px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field-label { font-size: 15px; font-weight: 600; }
.field-hint { font-size: 13px; color: var(--muted); }
input[type=text], input[type=number], input[type=email], input[type=password], select, textarea {
  width: 100%; min-height: 46px; padding: 10px 12px; border-radius: 10px; border: 1px solid #3A3A3A; background: #0F0F0F; color: var(--text); font: 16px var(--font);
}
textarea { resize: vertical; line-height: 1.4; }
.check { display: flex; align-items: center; gap: 10px; min-height: 46px; cursor: pointer; }
.check input { width: 22px; height: 22px; accent-color: var(--accent); flex: none; }
.plain-list { padding-left: 20px; }
.plain-list li { margin: 8px 0; }
.hazard-grid { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.hazard-btn { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; min-height: 120px; padding: 16px; border-radius: var(--radius); border: 2px solid var(--line); background: var(--panel); color: var(--text); font: 700 17px var(--font); cursor: pointer; }
.hazard-btn.on { border-color: var(--accent); background: #2A1F0E; }
.ico { width: 24px; height: 24px; }
.ico-lg { width: 40px; height: 40px; }
.hazard-btn.on .ico { color: var(--accent); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 14px; }
.chip { min-height: 40px; padding: 8px 14px; border-radius: 999px; border: 1px solid #3A3A3A; background: var(--panel-2); color: var(--text); font: 600 15px var(--font); cursor: pointer; }
.chip.on { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.callout { border-left: 0; background: #1E1710; border: 1px solid #4A3618; border-radius: 12px; padding: 14px; margin-top: 12px; }
.callout ul { margin: 6px 0 0; padding-left: 20px; }
.tabs { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 6px; margin: 8px 0; }
.tab { flex: none; min-height: 44px; padding: 8px 14px; border-radius: 10px; border: 1px solid var(--line); background: var(--panel); color: var(--text); font: 600 15px var(--font); cursor: pointer; }
.tab.on { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.tier-edit { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin: 14px 0; }
.tier-edit.tier-now h2, .tier-edit.tier-lockdown h2 { color: var(--urgent); }
.tier-edit h2 .muted { margin-left: 6px; }
.step-list { list-style: none; counter-reset: step; padding: 0; margin: 10px 0; }
.step-edit { margin: 14px 0; counter-increment: step; }
.step-edit::before { content: "Step " counter(step); display: block; font-size: 13px; font-weight: 700; color: var(--muted); margin-bottom: 4px; }
.step-edit textarea { overflow: hidden; }
.step-tools { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 6px; }
.step-tools select { width: auto; min-width: 140px; }
.icon-btn { min-width: 44px; min-height: 44px; border-radius: 10px; border: 1px solid var(--line); background: var(--panel-2); color: var(--text); font-size: 18px; cursor: pointer; }
.icon-btn[disabled] { opacity: .35; }
.gen { background: var(--panel-2); border-radius: 10px; padding: 10px 12px; margin: 10px 0; font-size: 15px; }
.gen p { margin: 0 0 4px; }
.gen ul { margin: 0; padding-left: 20px; }
.done-grid { display: grid; gap: 10px; margin: 16px 0; }
@media (min-width: 640px) { .done-grid { grid-template-columns: 1fr 1fr; } }

/* emergency mode */
body.mode-go main { max-width: 640px; padding-top: 0; }
.go-top { display: flex; align-items: center; justify-content: space-between; max-width: 640px; margin: 0 auto; padding: 12px 16px; }
.go-exit { color: var(--muted); font-size: 15px; padding: 10px 0; }
.go-title { font-size: clamp(32px, 8vw, 48px); margin: 12px 0 18px; }
.go-lead { font-size: 19px; color: var(--muted); }
.go-list { display: grid; gap: 12px; }
.go-btn { display: flex; align-items: center; gap: 16px; min-height: 84px; padding: 16px 20px; border-radius: 16px; background: var(--panel); border: 2px solid var(--line); color: var(--text); text-decoration: none; font-size: 24px; font-weight: 800; }
.go-btn:hover, .go-btn:focus-visible { border-color: var(--accent); color: var(--text); }
.go-btn .ico { color: var(--accent); }
.go-tier { flex-direction: column; align-items: flex-start; gap: 4px; }
.go-tier small { font-size: 17px; font-weight: 500; color: var(--muted); }
.go-tier.tier-now, .go-tier.tier-lockdown { border-color: var(--urgent); background: var(--urgent-bg); }
.go-tier.tier-now span, .go-tier.tier-lockdown span { color: #FFD7D2; }
.go-device { display: flex; flex-direction: column; gap: 6px; margin: 24px 0 8px; font-weight: 600; }
.go-911 { display: inline-block; margin-top: 16px; font-size: 18px; font-weight: 700; color: #FF8F84; padding: 8px 0; }
.go-back { display: inline-block; color: var(--muted); text-decoration: none; padding: 10px 0; font-size: 16px; }
.go-note { color: var(--muted); margin-top: 16px; }
.go-count { color: var(--muted); font-size: 16px; margin: 8px 0 0; }
.go-who { display: inline-block; background: var(--accent); color: var(--accent-ink); font-weight: 800; border-radius: 8px; padding: 4px 10px; margin: 12px 0 0; }
.go-step { font-size: clamp(28px, 7.5vw, 44px); line-height: 1.2; font-weight: 800; margin: 14px 0 28px; min-height: 3.6em; }
.go-urgent .go-step { color: #FFE4E0; }
.go-actions { display: grid; gap: 12px; }
.go-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.go-all { list-style: none; padding: 0; margin: 0 0 16px; }
.go-all li { border-bottom: 1px solid var(--line); }
.check-lg { font-size: 19px; align-items: flex-start; padding: 12px 0; }
.check-lg input { width: 28px; height: 28px; margin-top: 2px; }
.go-sub { margin-top: 24px; }
.go-others { color: var(--muted); padding-left: 20px; }

/* plan / paper */
.paper { background: #fff; color: #111; border-radius: var(--radius); padding: 20px; margin: 16px 0; }
.paper a { color: #111; }
.paper h1 { font-size: 28px; margin: 0; }
.paper h2 { font-size: 21px; margin: 24px 0 8px; border-bottom: 3px solid #111; padding-bottom: 4px; }
.paper h3 { font-size: 17px; margin: 14px 0 6px; }
.paper h3 span { font-weight: 400; color: #555; font-size: 14px; margin-left: 6px; }
.paper .tier-now h3, .paper .tier-lockdown h3 { color: #B3261E; }
.paper ol { margin: 0 0 8px 22px; padding: 0; }
.paper table { border-collapse: collapse; width: 100%; font-size: 14px; display: block; overflow-x: auto; }
.paper td, .paper th { border: 1px solid #BBB; padding: 6px; text-align: left; vertical-align: top; }
.paper .write-in { min-width: 140px; }
.paper .doc-note, .paper .doc-source, .paper .doc-head p { color: #555; font-size: 14px; }
.paper .doc-foot { margin-top: 24px; padding-top: 12px; border-top: 1px solid #BBB; font-size: 13px; color: #555; }

/* account / legal */
.auth { max-width: 420px; display: grid; gap: 12px; }
.form-msg { min-height: 1.5em; color: var(--accent); margin: 0; }
.legal { max-width: 680px; }
.legal p { color: #D9D5CE; }

/* intro */
.intro { position: fixed; inset: 0; z-index: 50; background: #000; overflow: hidden; transition: opacity .35s; }
.intro.intro-out { opacity: 0; }
.intro-scene, .intro-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.intro-skip, .intro-sound { position: absolute; z-index: 2; min-height: 44px; padding: 10px 16px; border-radius: 999px; border: 1px solid rgba(255,255,255,.35); background: rgba(0,0,0,.55); color: #fff; font: 600 15px var(--font); cursor: pointer; }
.intro-skip { top: max(16px, env(safe-area-inset-top)); right: 16px; }
.intro-sound { bottom: max(16px, env(safe-area-inset-bottom)); left: 16px; }
.ix-dark { animation: ix-door 3.2s cubic-bezier(.4,0,.2,1) .25s both; }
@keyframes ix-door {
  0% { transform: translateX(0); }
  30% { transform: translateX(-2050px); }
  80% { transform: translateX(-2050px); }
  100% { transform: translateX(0); }
}
.ix-room { animation: ix-glow 3.2s .25s both; }
@keyframes ix-glow { 0% { opacity: .6; } 30% { opacity: 1; } 85% { opacity: 1; } 100% { opacity: .5; } }
.ix-arm { animation: ix-reach 3s ease-in-out .3s both; }
@keyframes ix-reach {
  0%, 40% { transform: translate(700px, 640px); }
  58% { transform: translate(0, 0); }
  100% { transform: translate(0, 0); }
}
.ix-bag { animation: ix-take 3s ease-in .3s both; }
@keyframes ix-take {
  0%, 62% { transform: translate(0, 0) scale(1); }
  82% { transform: translate(520px, 520px) scale(1.25); }
  100% { transform: translate(520px, 520px) scale(1.25); }
}
.intro-logo { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px; padding: 16px; opacity: 0; animation: ix-logo .5s ease-out 3.4s forwards; }
.intro-logo .lockup { font-size: clamp(36px, 10vw, 88px); }
.intro-logo .tagline { margin: 0; color: var(--muted); font-size: clamp(15px, 3.6vw, 19px); text-align: center; }
@keyframes ix-logo { from { opacity: 0; transform: scale(.96); } to { opacity: 1; transform: none; } }

@media (max-width: 480px) {
  body { font-size: 16px; }
  .top nav a { padding: 8px 10px; font-size: 14px; }
  .lockup-sm { font-size: 14px; }
}

@media print {
  body { background: #fff; color: #111; }
  .top, .foot, .no-print, .go-top { display: none !important; }
  main { padding: 0; max-width: none; }
  .paper { padding: 0; margin: 0; border-radius: 0; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}