:root {
  color-scheme: light;
  --bg: #e9f0f4;
  --bg-soft: #e4ecef;
  --surface: #eaf1f4;
  --surface-strong: #f1f6f8;
  --text: #17232b;
  --muted: #536774;
  --line: rgba(75, 103, 120, .18);
  --shadow-dark: rgba(87, 111, 126, .28);
  --shadow-light: rgba(255, 255, 255, .92);
  --accent: #057296;
  --accent-bright: #3ebde6;
  --accent-ink: #062f3f;
  --neon: #31d5ff;
  --neon-soft: rgba(49, 213, 255, .18);
  --neon-glow: 0 0 0 1px rgba(49, 213, 255, .28), 0 0 24px rgba(49, 213, 255, .22), 0 0 64px rgba(49, 213, 255, .12);
  --danger: #b72039;
  --warning: #996000;
  --success: #0f7654;
  --info: #2768ba;
  --radius: 26px;
  --radius-small: 16px;
  --shadow-raised: 16px 16px 34px var(--shadow-dark), -14px -14px 30px var(--shadow-light);
  --shadow-soft: 8px 8px 18px var(--shadow-dark), -8px -8px 18px var(--shadow-light);
  --shadow-inset: inset 5px 5px 11px var(--shadow-dark), inset -5px -5px 11px var(--shadow-light);
  --duration-fast: 100ms;
  --duration-normal: 220ms;
  --duration-moderate: 340ms;
  --duration-slow: 560ms;
  --duration-deliberate: 540ms;
  --ease-standard: cubic-bezier(.2, 0, 0, 1);
  --ease-enter: cubic-bezier(.16, 1, .3, 1);
  --header-h: 82px;
  font-family: "Segoe UI Variable", "Segoe UI", Arial, sans-serif;
  font-synthesis: none;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #11191f;
  --bg-soft: #0e151b;
  --surface: #151f26;
  --surface-strong: #1a252d;
  --text: #edf7fa;
  --muted: #a1b3bd;
  --line: rgba(152, 197, 218, .17);
  --shadow-dark: rgba(0, 0, 0, .58);
  --shadow-light: rgba(54, 77, 90, .28);
  --accent: #3ebde6;
  --accent-bright: #63d4f5;
  --accent-ink: #05151c;
  --danger: #ff6072;
  --warning: #ffc84b;
  --success: #50d59f;
  --info: #72a7ff;
  --neon: #65ddff;
  --neon-soft: rgba(101, 221, 255, .2);
  --neon-glow: 0 0 0 1px rgba(101, 221, 255, .34), 0 0 28px rgba(62, 189, 230, .3), 0 0 72px rgba(62, 189, 230, .16);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #11191f;
    --bg-soft: #0e151b;
    --surface: #151f26;
    --surface-strong: #1a252d;
    --text: #edf7fa;
    --muted: #a1b3bd;
    --line: rgba(152, 197, 218, .17);
    --shadow-dark: rgba(0, 0, 0, .58);
    --shadow-light: rgba(54, 77, 90, .28);
    --accent: #3ebde6;
    --accent-bright: #63d4f5;
    --accent-ink: #05151c;
    --danger: #ff6072;
    --warning: #ffc84b;
    --success: #50d59f;
    --info: #72a7ff;
    --neon: #65ddff;
    --neon-soft: rgba(101, 221, 255, .2);
    --neon-glow: 0 0 0 1px rgba(101, 221, 255, .34), 0 0 28px rgba(62, 189, 230, .3), 0 0 72px rgba(62, 189, 230, .16);
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scrollbar-color: var(--accent) var(--bg-soft); scrollbar-width: auto; overflow-x: clip; }
body { margin: 0; background: var(--bg); color: var(--text); font-size: 18px; font-style: normal; line-height: 1.65; overflow-x: clip; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3, b, strong { font-style: normal; }
h1 { max-width: 12ch; margin-bottom: 26px; font-size: clamp(3.5rem, 6.6vw, 7.2rem); line-height: .92; letter-spacing: -.064em; font-weight: 780; text-wrap: balance; }
h2 { max-width: 14ch; margin-bottom: 22px; font-size: clamp(2.7rem, 5vw, 5.35rem); line-height: .98; letter-spacing: -.052em; font-weight: 760; text-wrap: balance; }
h3 { margin-bottom: 11px; font-size: clamp(1.25rem, 1.8vw, 1.65rem); line-height: 1.14; letter-spacing: -.026em; }
p { color: var(--muted); }
::selection { background: var(--accent-bright); color: var(--accent-ink); }
::-webkit-scrollbar { width: 14px; }
::-webkit-scrollbar-track { background: var(--bg-soft); }
::-webkit-scrollbar-thumb { border: 3px solid var(--bg-soft); border-radius: 999px; background: linear-gradient(var(--accent-bright), var(--accent)); }
::-webkit-scrollbar-thumb:hover { background: var(--accent-bright); }

.skip-link { position: fixed; z-index: 100; top: 12px; left: 12px; padding: 10px 14px; border-radius: 10px; background: var(--text); color: var(--bg); transform: translateY(-150%); transition: transform var(--duration-normal) var(--ease-standard); }
.skip-link:focus { transform: translateY(0); }
.scroll-progress { position: fixed; z-index: 90; top: 0; left: 0; width: 100%; height: 4px; background: transparent; pointer-events: none; }
.scroll-progress span { display: block; width: 100%; height: 100%; transform-origin: left; transform: scaleX(var(--page-progress, 0)); background: linear-gradient(90deg, var(--accent), var(--accent-bright)); }
@keyframes page-progress { to { transform: scaleX(1); } }
@supports (animation-timeline: scroll()) {
  @media (prefers-reduced-motion: no-preference) {
    .scroll-progress span { animation: page-progress linear both; animation-timeline: scroll(root block); }
  }
}

.site-header { position: sticky; z-index: 50; top: 0; min-height: var(--header-h); border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(20px) saturate(140%); }
.header-inner { width: min(1400px, calc(100% - 40px)); min-height: var(--header-h); margin: 0 auto; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 24px; }
.brand { display: flex; min-height: 44px; align-items: center; gap: 12px; min-width: max-content; }
.brand img { width: 118px; height: auto; object-fit: contain; }
.brand span { display: grid; line-height: 1.05; }
.brand b { font-size: .98rem; }
.brand small { margin-top: 5px; color: var(--muted); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; }
.chapter-nav { justify-self: center; display: flex; gap: 4px; padding: 6px; border-radius: 999px; background: var(--surface); box-shadow: var(--shadow-inset); }
.chapter-nav a, .mobile-menu a { display: flex; min-height: 44px; align-items: center; padding: 8px 13px; border-radius: 999px; color: var(--muted); font-size: .86rem; font-weight: 650; transition: transform var(--duration-normal); }
.chapter-nav a:hover, .chapter-nav a:focus-visible, .chapter-nav a.is-active { background: var(--surface-strong); color: var(--text); box-shadow: 3px 3px 8px var(--shadow-dark), -3px -3px 8px var(--shadow-light); }
.theme-switch { display: flex; gap: 3px; padding: 5px; border-radius: 14px; background: var(--surface); box-shadow: var(--shadow-inset); }
.theme-switch button, .menu-button { border: 0; border-radius: 10px; background: transparent; color: var(--muted); cursor: pointer; font-size: .78rem; font-weight: 680; }
.theme-switch button { display: inline-flex; min-height: 44px; align-items: center; gap: 7px; padding: 7px 10px; }
.theme-switch button img { width: 18px; height: 18px; opacity: .74; filter: brightness(0) saturate(100%) invert(59%) sepia(86%) saturate(1096%) hue-rotate(159deg) brightness(101%) contrast(91%); }
.theme-switch button[aria-pressed="true"] { background: var(--surface-strong); color: var(--text); box-shadow: 3px 3px 8px var(--shadow-dark), -3px -3px 8px var(--shadow-light); }
.theme-switch button[aria-pressed="true"] img { opacity: 1; filter: drop-shadow(0 0 6px var(--neon)); }
.menu-button { display: none; padding: 9px 12px; box-shadow: var(--shadow-soft); }
.mobile-menu { width: min(100% - 32px, 520px); margin: 0 auto 14px; padding: 10px; border-radius: var(--radius-small); background: var(--surface); box-shadow: var(--shadow-soft); }
.mobile-menu:not([hidden]) { display: grid; }

.hero, .section, .site-footer { width: min(1400px, calc(100% - 48px)); margin-inline: auto; }
.hero { min-height: calc(100dvh - var(--header-h)); padding: clamp(56px, 8vw, 110px) 0 72px; display: grid; grid-template-columns: minmax(0, .85fr) minmax(480px, 1.15fr); align-items: center; gap: clamp(36px, 6vw, 92px); }
.kicker { margin-bottom: 16px; color: var(--accent); font-size: .78rem; font-weight: 760; letter-spacing: .16em; text-transform: uppercase; }
.hero-lead { max-width: 610px; margin-bottom: 32px; font-size: clamp(1.28rem, 2vw, 1.72rem); line-height: 1.5; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 12px 20px; border: 0; border-radius: 14px; cursor: pointer; font-weight: 720; white-space: nowrap; transition: transform var(--duration-normal) var(--ease-standard); }
.button-primary { background: var(--accent-bright); color: var(--accent-ink); box-shadow: 8px 8px 18px var(--shadow-dark), -7px -7px 16px var(--shadow-light), inset 0 1px rgba(255,255,255,.55), 0 0 26px var(--neon-soft); }
.button-secondary { background: var(--surface); color: var(--text); box-shadow: var(--shadow-soft); }
.button:active { transform: translateY(1px) scale(.985); box-shadow: var(--shadow-inset); }
.button:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid var(--accent-bright); outline-offset: 4px; }
.notice { max-width: 650px; margin-top: 26px; font-size: .92rem; }
.media-card { position: relative; margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-raised); transition: transform var(--duration-moderate) var(--ease-enter); }
.media-card::after { content: ""; position: absolute; inset: 0; border-radius: inherit; box-shadow: inset 0 1px rgba(255,255,255,.22), inset 0 -1px rgba(0,0,0,.12); pointer-events: none; }
.media-card img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--duration-slow) var(--ease-enter); }
.media-card figcaption { position: absolute; z-index: 2; left: 18px; right: 18px; bottom: 18px; padding: 12px 14px; border: 1px solid rgba(255,255,255,.32); border-radius: 13px; background: rgba(7,18,25,.68); color: #f2fbfd; font-size: .82rem; font-weight: 650; backdrop-filter: blur(12px); }
.hero-media { aspect-ratio: 1.58; }

.section { position: relative; isolation: isolate; padding: clamp(104px, 12vw, 180px) 0; scroll-margin-top: calc(var(--header-h) + 24px); }
.section-heading { max-width: 850px; margin-bottom: 54px; }
.section-heading > p:last-child, .split-heading > p, .language-copy > p { max-width: 64ch; font-size: 1.24rem; line-height: 1.62; }
.section-heading.compact { margin-bottom: 42px; }
.soft-card, .soft-panel { border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow-soft); }
.soft-card { padding: 29px; border-radius: var(--radius-small); transition: transform var(--duration-normal) var(--ease-enter); }
.soft-panel { padding: clamp(26px, 4vw, 52px); border-radius: var(--radius); }
.card-index, .signal-mark { display: block; margin-bottom: 28px; color: var(--accent); font-size: .75rem; font-weight: 800; letter-spacing: .12em; }
.why-layout { display: grid; grid-template-columns: minmax(300px, .8fr) minmax(0, 1.2fr); gap: 32px; align-items: stretch; }
.why-layout .portrait { min-height: 600px; }
.why-layout .portrait img { object-position: 44% center; }
.reason-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.reason-grid .soft-card { min-height: 220px; }
.principles { margin-top: 34px; display: grid; grid-template-columns: .55fr 1.45fr; gap: 42px; align-items: start; }
.check-list { display: grid; gap: 12px; padding: 0; margin: 0; list-style: none; }
.check-list.columns { grid-template-columns: repeat(2, 1fr); }
.check-list li { position: relative; padding-left: 28px; color: var(--muted); }
.check-list li::before { content: ""; position: absolute; top: .48em; left: 2px; width: 11px; height: 11px; border: 3px solid var(--accent-bright); border-radius: 50%; box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-bright) 15%, transparent); }

.split-heading { margin-bottom: 44px; display: grid; grid-template-columns: 1.2fr .8fr; gap: 60px; align-items: end; }
.split-heading p { margin-bottom: 10px; }
.route-layout { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr); gap: 34px; align-items: stretch; }
.route-layout .wide { min-height: 640px; }
.route-rules { display: grid; gap: 14px; }
.route-rules article, .rule-stack article, .cause-list article { padding: 21px 22px; border-left: 3px solid var(--accent); border-radius: 0 var(--radius-small) var(--radius-small) 0; background: color-mix(in srgb, var(--surface) 88%, transparent); box-shadow: 8px 8px 18px var(--shadow-dark), -8px -8px 18px var(--shadow-light); transition: transform var(--duration-normal); }
.route-rules span { color: var(--accent); font-size: .72rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.route-rules p, .rule-stack p, .cause-list span { margin: 0; }
.prohibited { margin-top: 46px; padding: clamp(30px, 5vw, 60px); border-radius: var(--radius); background: color-mix(in srgb, var(--danger) 7%, var(--surface)); box-shadow: var(--shadow-inset); }
.prohibited-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.prohibited-grid p { margin: 0; padding: 18px 18px 18px 24px; border-left: 3px solid var(--danger); border-radius: 10px; background: color-mix(in srgb, var(--surface) 90%, transparent); color: var(--text); font-weight: 650; }

.risk-stage { position: relative; display: grid; grid-template-columns: 1.15fr .85fr; gap: 32px; align-items: center; }
.risk-stage > .media-card { aspect-ratio: 1.25; }
.risk-cards { display: grid; gap: 17px; }
.risk-card { padding: 24px 26px; border: 1px solid var(--line); border-radius: var(--radius-small); background: var(--surface); box-shadow: var(--shadow-soft); }
.risk-card h3 { color: var(--accent); }
.risk-card p { display: inline; margin-right: 8px; }
.risk-card p:not(:last-child)::after { content: "/"; margin-left: 8px; color: var(--line); }

.preflight-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 44px; align-items: center; }
.preflight-copy .check-list { margin-top: 30px; }
.scenario { margin-top: 38px; display: grid; grid-template-columns: .8fr 1fr 1fr; gap: 24px; align-items: center; }
.scenario-label { color: var(--accent); font-size: .75rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.scenario-answer { height: 100%; padding: 22px; border-radius: var(--radius-small); background: var(--surface-strong); }
.scenario-answer.bad { border-left: 4px solid var(--danger); }
.scenario-answer.good { border-left: 4px solid var(--success); }
.scenario-answer p { margin-bottom: 0; }
.electric-steps { margin-top: 54px; }
.step-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; padding: 0; list-style: none; }
.step-row li { display: flex; align-items: center; gap: 14px; padding: 22px; border-radius: var(--radius-small); background: var(--surface); color: var(--text); box-shadow: var(--shadow-soft); font-weight: 650; }
.step-row span, .number-list span, .aid-steps span { flex: 0 0 auto; display: grid; width: 38px; height: 38px; place-items: center; border-radius: 50%; background: var(--accent-bright); color: var(--accent-ink); font-weight: 800; box-shadow: 4px 4px 10px var(--shadow-dark), -4px -4px 10px var(--shadow-light); }
.electric-bans { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.electric-bans span { padding: 10px 13px; border-left: 3px solid var(--danger); border-radius: 9px; background: var(--surface); color: var(--muted); box-shadow: var(--shadow-soft); font-size: .84rem; font-weight: 650; }

.protection-bento { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }
.protection-bento .large { grid-column: span 7; min-height: 520px; }
.protection-bento .ppe { grid-column: span 5; }
.protection-bento > .media-card:not(.large) { grid-column: span 5; min-height: 390px; }
.protection-bento .collective { grid-column: span 7; }
.ppe, .collective { display: flex; flex-direction: column; justify-content: center; }
.token-list { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0 24px; }
.token-list span { padding: 10px 13px; border-radius: 10px; background: var(--surface-strong); color: var(--text); box-shadow: var(--shadow-inset); font-size: .86rem; font-weight: 670; }

.language-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.color-code { margin-top: 32px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 13px; }
.color-code article { min-height: 130px; padding: 20px; border-radius: var(--radius-small); color: #fff; box-shadow: var(--shadow-soft); transition: transform var(--duration-normal); }
.color-code b, .color-code span { display: block; }
.color-code span { margin-top: 12px; font-size: .82rem; color: rgba(255,255,255,.9); }
.color-code .red { background: #b72f40; }
.color-code .yellow { background: #935c00; }
.color-code .green { background: #137452; }
.color-code .blue { background: #245aa0; }
.signal-grid { margin-top: 48px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.hygiene-row { margin-top: 36px; display: grid; grid-template-columns: .9fr 1.1fr; gap: 36px; align-items: center; }
.hygiene-row figure { margin: 0; overflow: hidden; border-radius: var(--radius-small); }
.hygiene-row figure img { width: 100%; height: auto; aspect-ratio: 1.6; object-fit: cover; }

.incident-layout { display: grid; grid-template-columns: 1.1fr .9fr; gap: 52px; align-items: center; }
.cause-list { display: grid; gap: 14px; margin-top: 28px; }
.cause-list article { display: grid; gap: 6px; }
.case-note { margin-top: 44px; padding: clamp(26px, 5vw, 54px); border-left: 6px solid var(--warning); border-radius: var(--radius); background: color-mix(in srgb, var(--warning) 8%, var(--surface)); box-shadow: var(--shadow-soft); }
.case-note b { color: var(--warning); }
.case-note p { max-width: 95ch; margin: 12px 0 0; color: var(--text); font-size: 1.05rem; }

.emergency-image { aspect-ratio: 2.3; }
.emergency-image img { object-position: center 44%; }
.emergency-flow { position: relative; margin: 36px 0 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 15px; list-style: none; }
.emergency-flow li { min-height: 230px; padding: 24px; border: 1px solid var(--line); border-radius: var(--radius-small); background: var(--surface); box-shadow: var(--shadow-soft); transition: transform var(--duration-moderate) var(--ease-enter), border-color var(--duration-moderate); }
.emergency-flow li > span { display: block; margin-bottom: 40px; color: var(--accent); font-size: 2rem; font-weight: 800; }
.emergency-flow p { margin: 8px 0 0; }

.fire-grid, .fire-facts { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.priority-note { margin-bottom: 20px; padding: 14px 16px; border-left: 3px solid var(--danger); border-radius: 0 12px 12px 0; background: color-mix(in srgb, var(--danger) 7%, var(--surface)); color: var(--text); font-weight: 680; }
.number-list, .aid-steps { display: grid; gap: 12px; padding: 0; list-style: none; }
.number-list li, .aid-steps li { display: flex; gap: 16px; align-items: flex-start; padding: 18px; border-radius: var(--radius-small); background: var(--surface); box-shadow: var(--shadow-soft); }
.number-list p, .aid-steps p { margin: 5px 0 0; }
.fire-facts { margin-top: 48px; }
.fact-stack { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.fact-stack strong { color: var(--accent); font-size: clamp(3rem, 7vw, 6rem); line-height: 1; }

.evacuation { display: grid; grid-template-columns: 1.12fr .88fr; gap: 52px; align-items: center; }
.evacuation-media { min-height: 650px; }
.evacuation-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-position: 58% center; }
.rule-stack { display: grid; gap: 14px; margin-top: 30px; }
.rule-stack .assembly-point { display: grid; grid-template-columns: 46px minmax(0, 1fr); gap: 14px; align-items: start; }
.assembly-icon { display: grid; width: 42px; height: 42px; place-items: center; border: 1px solid #68ddb2; border-radius: 10px; background: #11865f; color: #fff; box-shadow: 0 0 22px rgba(44, 214, 151, .28); }
.assembly-icon img { width: 27px; height: 27px; }

.aid-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: start; }
.aid-layout .media-card { position: sticky; top: calc(var(--header-h) + 32px); }
.aid-note { margin: 16px 0 0; padding: 18px 20px; border-left: 3px solid var(--accent); border-radius: 0 var(--radius-small) var(--radius-small) 0; background: var(--surface); box-shadow: var(--shadow-soft); }

.recap-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 52px; align-items: center; }
.five-rules { display: grid; gap: 13px; padding: 0; margin: 34px 0 0; list-style: none; }
.five-rules li { display: flex; gap: 16px; align-items: center; padding: 19px 20px; border-radius: var(--radius-small); background: var(--surface); box-shadow: var(--shadow-soft); color: var(--text); font-weight: 650; transition: transform var(--duration-normal); }
.five-rules span { color: var(--accent); font-size: .78rem; font-weight: 800; letter-spacing: .1em; }

.knowledge-intro { max-width: 760px; margin-bottom: 42px; }
.quiz { display: grid; gap: 20px; }
.quiz-status { display: none; grid-template-columns: auto minmax(120px, 1fr); gap: 18px; align-items: center; color: var(--text); font-size: .9rem; font-weight: 720; }
.quiz.is-stepped .quiz-status { display: grid; }
.quiz-meter { display: block; overflow: hidden; height: 8px; border-radius: 999px; background: var(--surface-strong); box-shadow: var(--shadow-inset); }
.quiz-meter i { display: block; width: 100%; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--accent), var(--neon)); box-shadow: 0 0 16px var(--neon-soft); transform: scaleX(var(--quiz-progress, .2)); transform-origin: left; transition: transform var(--duration-moderate) var(--ease-enter); }
.quiz fieldset { display: grid; gap: 10px; margin: 0; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius-small); background: color-mix(in srgb, var(--surface-strong) 76%, transparent); }
.quiz fieldset.is-correct { border-color: var(--success); }
.quiz fieldset.is-wrong { border-color: var(--danger); }
.quiz legend { padding: 0 8px; color: var(--text); font-weight: 720; }
.quiz label { display: flex; gap: 11px; align-items: flex-start; padding: 11px 13px; border-radius: 10px; color: var(--muted); cursor: pointer; transition: background var(--duration-normal), color var(--duration-normal); }
.quiz label:hover { background: var(--surface); color: var(--text); }
.quiz input { flex: 0 0 20px; margin-top: 4px; accent-color: var(--accent); }
.question-feedback { margin: 4px 4px 0; color: var(--text); font-size: .92rem; font-weight: 720; }
.question-feedback[data-state="wrong"] { color: var(--danger); }
.question-feedback[data-state="correct"] { color: var(--success); }
.quiz-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; padding-top: 12px; }
.quiz-result { flex: 1 1 100%; min-height: 32px; color: var(--text); font-weight: 720; }
.quiz-official-note { margin: 0; padding: 16px 18px; border-left: 3px solid var(--accent); border-radius: 0 12px 12px 0; background: color-mix(in srgb, var(--accent) 7%, var(--surface)); font-size: .9rem; }
.quiz-official-note b { color: var(--text); }

.closing { position: relative; min-height: 760px; display: grid; align-items: center; }
.closing-media { position: absolute; inset: 0; margin: 0; overflow: hidden; border-radius: var(--radius); box-shadow: var(--shadow-raised); }
.closing-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(8,19,26,.9) 0%, rgba(8,19,26,.68) 46%, rgba(8,19,26,.08) 78%); }
.closing-media img { width: 100%; height: 100%; object-fit: cover; }
.closing-copy { position: relative; z-index: 2; max-width: 650px; padding: clamp(34px, 7vw, 86px); }
.closing-copy h2, .closing-copy p { color: #f2fbfd; }
.closing-copy .kicker { color: var(--accent-bright); }

.site-footer { padding: 42px 0 58px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 30px; align-items: center; }
.site-footer > div { display: flex; align-items: center; gap: 14px; }
.site-footer img { width: 110px; height: auto; }
.site-footer p { margin: 0; }
.site-footer p span { display: block; font-size: .82rem; }

[data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity var(--duration-deliberate) var(--ease-enter) var(--delay, 0ms), transform var(--duration-deliberate) var(--ease-enter) var(--delay, 0ms); }
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

/* Visual atmosphere: a technical route grid replaces duplicated photo backdrops. */
.hero { position: relative; isolation: isolate; }
.hero [data-reveal] { opacity: 1; transition-duration: 420ms; }
.hero::before { content: ""; position: absolute; z-index: -1; inset: 5% -12% 8% 28%; border-radius: 48%; background: radial-gradient(circle at 55% 45%, var(--neon-soft), transparent 62%); filter: blur(18px); pointer-events: none; }
.section::before { content: ""; position: absolute; z-index: -2; top: 8%; right: max(-5vw, -72px); width: min(58vw, 800px); aspect-ratio: 1.32; border: 0; border-radius: 42px; background: radial-gradient(circle at 18% 26%, color-mix(in srgb, var(--neon) 72%, transparent) 0 4px, transparent 5px), radial-gradient(circle at 74% 68%, color-mix(in srgb, var(--neon) 58%, transparent) 0 5px, transparent 6px), linear-gradient(135deg, transparent 49.7%, color-mix(in srgb, var(--neon) 24%, transparent) 49.8% 50.2%, transparent 50.3%), repeating-linear-gradient(90deg, transparent 0 31px, color-mix(in srgb, var(--neon) 12%, transparent) 32px), repeating-linear-gradient(0deg, transparent 0 31px, color-mix(in srgb, var(--neon) 12%, transparent) 32px); background-size: auto, auto, auto, 32px 32px, 32px 32px; box-shadow: none; opacity: .72; filter: none; mask-image: radial-gradient(ellipse at center, #000 0 45%, transparent 76%); pointer-events: none; }

.section-symbol { display: grid; width: 48px; height: 48px; place-items: center; margin-bottom: 22px; border: 1px solid color-mix(in srgb, var(--neon) 55%, var(--line)); border-radius: 14px; background: color-mix(in srgb, var(--surface-strong) 84%, transparent); box-shadow: var(--shadow-soft), var(--neon-glow); }
.section-symbol img { width: 25px; height: 25px; opacity: .9; filter: brightness(0) saturate(100%) invert(59%) sepia(86%) saturate(1096%) hue-rotate(159deg) brightness(101%) contrast(91%); }
.hero-symbol { width: 56px; height: 56px; border-radius: 17px; }

.chapter-nav a.is-active { color: var(--accent); box-shadow: 3px 3px 8px var(--shadow-dark), -3px -3px 8px var(--shadow-light), 0 0 15px var(--neon-soft); }
.scroll-progress span { box-shadow: 0 0 12px var(--neon), 0 0 28px var(--neon); }
.emergency-flow li > span, .fact-stack strong, .five-rules span { text-shadow: 0 0 18px var(--neon-soft); }

.hint { position: relative; isolation: isolate; display: inline-grid; width: 30px; height: 30px; place-items: center; margin: 0 2px; padding: 0; border: 1px solid color-mix(in srgb, var(--neon) 65%, var(--line)); border-radius: 50%; background: var(--surface-strong); color: var(--accent); box-shadow: 3px 3px 8px var(--shadow-dark), -3px -3px 8px var(--shadow-light), 0 0 15px var(--neon-soft); vertical-align: middle; cursor: help; }
.hint > img { width: 17px; height: 17px; filter: brightness(0) saturate(100%) invert(59%) sepia(86%) saturate(1096%) hue-rotate(159deg) brightness(101%) contrast(91%); }
.hint::after { content: ""; position: absolute; inset: -6px; z-index: -1; border: 1px solid var(--neon); border-radius: inherit; opacity: 0; transform: scale(.72); }
.hint [role="tooltip"] { position: absolute; z-index: 40; right: -12px; bottom: calc(100% + 14px); width: min(330px, calc(100vw - 40px)); padding: 15px 17px; border: 1px solid color-mix(in srgb, var(--neon) 54%, var(--line)); border-radius: 14px; background: color-mix(in srgb, var(--surface-strong) 96%, transparent); color: var(--text); box-shadow: var(--shadow-raised), var(--neon-glow); font-size: .88rem; font-weight: 600; line-height: 1.45; text-align: left; opacity: 0; visibility: hidden; transform: translateY(8px) scale(.96); transform-origin: 100% 100%; transition: opacity var(--duration-normal), transform var(--duration-normal) var(--ease-enter), visibility var(--duration-normal); backdrop-filter: blur(18px); pointer-events: none; }
.hint:hover [role="tooltip"], .hint:focus-visible [role="tooltip"], .hint.is-open [role="tooltip"] { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }
.hint.is-open::after, .hint:focus-visible::after { animation: hint-ring 1.2s var(--ease-enter) infinite; }
@keyframes hint-ring { 0% { opacity: .55; transform: scale(.72); } 75%, 100% { opacity: 0; transform: scale(1.45); } }


.why [data-reveal] { transform: translateX(-34px); }
.route [data-reveal] { transform: translateX(34px); }
.risks [data-reveal] { transform: translateY(24px) scale(.95); }
.preflight [data-reveal] { transform: translateY(34px) rotate(-.7deg); }
.protection [data-reveal] { transform: translateY(30px) scale(.97); }
.language [data-reveal] { transform: translateX(-28px); }
.incident [data-reveal] { transform: translateY(30px) scale(.96); }
.emergency [data-reveal] { transform: translateY(42px); }
.fire [data-reveal] { transform: translateX(30px); }
.evacuation [data-reveal] { transform: translateX(-30px); }
.first-aid [data-reveal] { transform: translateY(28px) scale(.97); }
.recap [data-reveal] { transform: translateY(38px); }
.knowledge [data-reveal] { transform: translateY(24px) scale(.98); }
.closing [data-reveal] { transform: scale(.95); }
.why [data-reveal].is-visible, .route [data-reveal].is-visible, .risks [data-reveal].is-visible, .preflight [data-reveal].is-visible, .protection [data-reveal].is-visible, .language [data-reveal].is-visible, .incident [data-reveal].is-visible, .emergency [data-reveal].is-visible, .fire [data-reveal].is-visible, .evacuation [data-reveal].is-visible, .first-aid [data-reveal].is-visible, .recap [data-reveal].is-visible, .knowledge [data-reveal].is-visible, .closing [data-reveal].is-visible { transform: none; }

@media (prefers-reduced-motion: no-preference) {
  .is-visible .section-symbol img, .section-symbol.is-visible img { animation: icon-arrive 560ms var(--ease-enter) both; }
  .emergency-flow.is-visible li, .aid-layout .is-visible .aid-steps li, .recap-layout .is-visible .five-rules li { animation: key-step-in 620ms var(--ease-enter) both; }
  .emergency-flow.is-visible li:nth-child(2), .aid-steps li:nth-child(2), .five-rules li:nth-child(2) { animation-delay: 70ms; }
  .emergency-flow.is-visible li:nth-child(3), .aid-steps li:nth-child(3), .five-rules li:nth-child(3) { animation-delay: 140ms; }
  .emergency-flow.is-visible li:nth-child(4), .aid-steps li:nth-child(4), .five-rules li:nth-child(4) { animation-delay: 210ms; }
  .emergency-flow.is-visible li:nth-child(5), .aid-steps li:nth-child(5), .five-rules li:nth-child(5) { animation-delay: 280ms; }
  .aid-steps li:nth-child(6) { animation-delay: 350ms; }
  @keyframes icon-arrive { from { opacity: 0; transform: rotate(-18deg) scale(.65); } to { opacity: .9; transform: rotate(0) scale(1); } }
  @keyframes key-step-in { from { opacity: .2; transform: translateY(18px) scale(.97); } to { opacity: 1; transform: none; } }
}

@media (max-width: 1180px) {
  .header-inner { grid-template-columns: auto 1fr auto; }
  .chapter-nav { display: none; }
  .theme-switch { justify-self: end; }
  .hero { grid-template-columns: .9fr 1.1fr; }
  .emergency-flow { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  :root { --header-h: 72px; }
  .header-inner { width: min(100% - 28px, 760px); grid-template-columns: 1fr auto auto; gap: 10px; }
  .brand span { display: none; }
  .brand img { width: 92px; height: auto; }
  .theme-switch button { display: inline-grid; width: 40px; height: 40px; place-items: center; padding: 0; }
  .theme-switch button span { display: none; }
  .menu-button { display: block; }
  .hero, .section, .site-footer { width: min(100% - 32px, 760px); }
  .hero { min-height: auto; grid-template-columns: 1fr; padding-top: 56px; }
  .hero-copy { order: 1; }
  .hero-media { order: 2; }
  .why-layout, .principles, .split-heading, .route-layout, .risk-stage, .preflight-grid, .scenario, .language-layout, .hygiene-row, .incident-layout, .fire-grid, .fire-facts, .evacuation, .aid-layout, .recap-layout { grid-template-columns: 1fr; }
  .why-layout .portrait, .route-layout .wide, .evacuation-media { min-height: auto; aspect-ratio: 1.35; }
  .reason-grid { grid-template-columns: repeat(2, 1fr); }
  .principles { gap: 16px; }
  .prohibited-grid { grid-template-columns: repeat(2, 1fr); }
  .protection-bento .large, .protection-bento .ppe, .protection-bento > .media-card:not(.large), .protection-bento .collective { grid-column: span 12; }
  .protection-bento .large, .protection-bento > .media-card:not(.large) { min-height: auto; aspect-ratio: 1.5; }
  .aid-layout .media-card { position: relative; top: auto; }
  .emergency-image { aspect-ratio: 1.5; }
  .emergency-flow { grid-template-columns: repeat(2, 1fr); }
  .section::before { right: -20vw; width: 86vw; opacity: .075; }
  .closing { min-height: 680px; }
}

@media (max-width: 620px) {
  body { font-size: 16.5px; }
  .hero, .section, .site-footer { width: min(100% - 24px, 560px); }
  .section { padding: 76px 0; }
  h1 { font-size: clamp(2.7rem, 14vw, 4.3rem); }
  h2 { font-size: clamp(2.1rem, 10vw, 3.3rem); }
  .hero-actions, .quiz-actions { align-items: stretch; flex-direction: column; }
  .button { width: 100%; white-space: normal; text-align: center; }
  .hero-media { aspect-ratio: 1.05; }
  .hero-media img { object-position: 64% center; }
  .reason-grid, .check-list.columns, .prohibited-grid, .color-code, .signal-grid, .step-row, .fact-stack, .emergency-flow { grid-template-columns: 1fr; }
  .hint [role="tooltip"] { right: -8px; width: min(300px, calc(100vw - 32px)); font-size: .84rem; }
  .reason-grid .soft-card { min-height: auto; }
  .route-layout .wide, .evacuation-media { aspect-ratio: 1; }
  .scenario { padding: 24px; }
  .emergency-flow li { min-height: auto; }
  .emergency-flow li > span { margin-bottom: 18px; }
  .site-footer { align-items: flex-start; flex-direction: column; }
  .site-footer > p { font-size: .84rem; }
  .closing { min-height: 620px; }
  .closing-media::after { background: linear-gradient(0deg, rgba(8,19,26,.94) 0%, rgba(8,19,26,.64) 70%, rgba(8,19,26,.18) 100%); }
  .closing-media img { object-position: 62% center; }
  .closing-copy { align-self: end; padding: 28px; }
}

@media (hover: none) {
  .button:hover, .media-card:hover, .soft-card:hover, .color-code article:hover, .emergency-flow li:hover { transform: none; }
  .media-card:hover img { transform: none; filter: none; }
}

@media (prefers-reduced-motion: reduce) {
  :root { --duration-fast: 1ms; --duration-normal: 1ms; --duration-moderate: 1ms; --duration-slow: 1ms; --duration-deliberate: 1ms; }
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; transition-duration: 1ms !important; scroll-behavior: auto !important; }
  [data-reveal] { opacity: 1; transform: none; }
  .scroll-progress span { animation: none; transform: scaleX(var(--page-progress, 0)); transition: none; }
}

@media (prefers-reduced-transparency: reduce) {
  .site-header, .media-card figcaption, .hint [role="tooltip"] { backdrop-filter: none; background: var(--surface); }
}

/* 2026-09-03 production refinement: larger type, denser rhythm, neon hierarchy and safe motion. */
:root {
  --header-h: 76px;
  --neon-soft: rgba(49, 213, 255, .25);
  --neon-glow: 0 0 0 1px rgba(49, 213, 255, .38), 0 0 28px rgba(49, 213, 255, .28), 0 0 78px rgba(49, 213, 255, .16);
}
:root[data-theme="dark"] {
  --neon-soft: rgba(101, 221, 255, .29);
  --neon-glow: 0 0 0 1px rgba(101, 221, 255, .44), 0 0 34px rgba(62, 189, 230, .36), 0 0 90px rgba(62, 189, 230, .2);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --neon-soft: rgba(101, 221, 255, .29);
    --neon-glow: 0 0 0 1px rgba(101, 221, 255, .44), 0 0 34px rgba(62, 189, 230, .36), 0 0 90px rgba(62, 189, 230, .2);
  }
}

body { font-size: clamp(18px, 1.22vw, 20px); }
button, a { touch-action: manipulation; }
h1 { max-width: 15ch; font-size: clamp(3.7rem, 5.8vw, 6.4rem); line-height: .94; }
h2 { max-width: 21ch; font-size: clamp(2.8rem, 4.25vw, 4.75rem); line-height: 1; }
h3 { font-size: clamp(1.3rem, 1.65vw, 1.7rem); }
.kicker { font-size: .88rem; }
.notice { font-size: 1rem; }
.media-card figcaption { font-size: .9rem; }
.hero { min-height: calc(100dvh - var(--header-h)); padding: clamp(46px, 5.5vw, 82px) 0 64px; gap: clamp(34px, 5vw, 76px); }
.hero::before { background: radial-gradient(circle at 58% 46%, rgba(49,213,255,.36), transparent 63%); }
.section { padding: clamp(84px, 8vw, 122px) 0; }
.section-heading { max-width: 1040px; margin-bottom: 40px; }
.section-heading > p:last-child, .split-heading > p, .language-copy > p { font-size: clamp(1.18rem, 1.45vw, 1.38rem); }
.split-heading { margin-bottom: 36px; }
.section::before { opacity: .15; border-color: color-mix(in srgb, var(--neon) 40%, transparent); }
.soft-card, .soft-panel, .route-rules article, .rule-stack article, .cause-list article, .quiz fieldset { border-color: color-mix(in srgb, var(--neon) 20%, var(--line)); }
.section-symbol { box-shadow: var(--shadow-soft), 0 0 20px rgba(49,213,255,.38), 0 0 54px rgba(49,213,255,.2); }
.button-primary { box-shadow: 8px 8px 18px var(--shadow-dark), -7px -7px 16px var(--shadow-light), inset 0 1px rgba(255,255,255,.55), 0 0 22px rgba(49,213,255,.42), 0 0 54px rgba(49,213,255,.2); }
.menu-button { display: none; min-height: 44px; }

.civil-defense .section-heading { max-width: 980px; }
.civil-defense-board { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 22px; }
.civil-card { position: relative; overflow: hidden; min-height: 300px; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: color-mix(in srgb, var(--surface) 92%, transparent); box-shadow: var(--shadow-raised); }
.civil-card::after { content: ""; position: absolute; right: -90px; bottom: -110px; width: 250px; aspect-ratio: 1; border: 1px solid color-mix(in srgb, var(--neon) 38%, transparent); border-radius: 50%; box-shadow: 0 0 70px var(--neon-soft); opacity: .5; pointer-events: none; }
.civil-alert { grid-column: span 7; display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 30px; align-items: center; background: linear-gradient(135deg, color-mix(in srgb, var(--surface-strong) 92%, transparent), color-mix(in srgb, var(--accent) 11%, var(--surface))); }
.civil-threats { grid-column: span 5; }
.civil-object { grid-column: span 5; }
.civil-action { grid-column: span 7; }
.civil-index { display: block; margin-bottom: 14px; color: var(--accent); font-size: .78rem; font-weight: 820; letter-spacing: .13em; text-transform: uppercase; }
.civil-card h3, .rescue-panel h3 { margin-bottom: 12px; font-size: clamp(1.55rem, 2.5vw, 2.35rem); }
.civil-card p { margin-bottom: 0; }
.civil-card-icon { display: grid; width: 52px; height: 52px; place-items: center; margin-bottom: 28px; border: 1px solid var(--neon); border-radius: 15px; background: var(--surface-strong); box-shadow: var(--shadow-soft), 0 0 26px var(--neon-soft); }
.civil-card-icon img, .civil-signal img { filter: brightness(0) saturate(100%) invert(59%) sepia(86%) saturate(1096%) hue-rotate(159deg) brightness(101%) contrast(91%); }
.civil-signal { position: relative; display: grid; width: 132px; aspect-ratio: 1; place-items: center; border: 1px solid var(--neon); border-radius: 50%; background: var(--surface-strong); box-shadow: var(--shadow-inset), 0 0 46px var(--neon-soft); }
.civil-signal img { position: relative; z-index: 2; width: 42px; height: 42px; }
.signal-wave { position: absolute; inset: 15%; border: 2px solid var(--neon); border-radius: 50%; opacity: 0; }
.civil-threats ul { display: grid; gap: 10px; padding: 0; margin: 22px 0 0; list-style: none; }
.civil-threats li { display: grid; grid-template-columns: minmax(118px, .72fr) 1.28fr; gap: 16px; padding: 12px 14px; border-left: 3px solid var(--accent-bright); border-radius: 0 11px 11px 0; background: var(--surface-strong); }
.civil-threats li span { color: var(--muted); }
.civil-distance { display: grid; grid-template-columns: auto 1fr auto; gap: 12px; align-items: center; margin-top: 30px; color: var(--text); font-size: .82rem; font-weight: 760; text-transform: uppercase; }
.civil-distance i { height: 2px; background: repeating-linear-gradient(90deg, var(--neon) 0 9px, transparent 9px 17px); box-shadow: 0 0 12px var(--neon); }
.civil-distance strong { padding: 9px 12px; border: 1px solid color-mix(in srgb, var(--danger) 62%, var(--line)); border-radius: 999px; color: var(--danger); background: color-mix(in srgb, var(--danger) 10%, var(--surface)); }
.civil-action ol { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; padding: 0; margin: 30px 0 0; list-style: none; counter-reset: civil-step; }
.civil-action li { counter-increment: civil-step; position: relative; padding: 42px 14px 14px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface-strong); font-weight: 760; }
.civil-action li::before { content: "0" counter(civil-step); position: absolute; top: 11px; left: 14px; color: var(--accent); font-size: .72rem; letter-spacing: .1em; }
.rescue-panel { display: grid; grid-template-columns: minmax(260px, .9fr) minmax(0, 1.4fr) auto; gap: 28px; align-items: center; margin-top: 22px; padding: 28px 30px; border: 1px solid color-mix(in srgb, var(--neon) 58%, var(--line)); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-raised), var(--neon-glow); }
.rescue-panel h3 { margin: 0; }
.rescue-numbers { display: grid; grid-template-columns: repeat(3, minmax(110px, 1fr)); gap: 12px; }
.rescue-numbers a { display: grid; min-height: 76px; place-items: center; padding: 10px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface-strong); box-shadow: var(--shadow-soft); }
.rescue-numbers a span { color: var(--muted); font-size: .78rem; font-weight: 700; }
.rescue-numbers a b { color: var(--accent); font-size: 1.55rem; line-height: 1; }

.contact-card { display: grid; grid-template-columns: minmax(260px, .72fr) minmax(0, 1.28fr); gap: clamp(32px, 6vw, 78px); align-items: center; overflow: hidden; }
.contact-portrait { position: relative; margin: 0; min-height: 420px; overflow: hidden; border: 1px solid color-mix(in srgb, var(--neon) 45%, var(--line)); border-radius: var(--radius); background: radial-gradient(circle at 50% 35%, var(--surface-strong), var(--bg-soft)); box-shadow: var(--shadow-raised), var(--neon-glow); display: grid; place-items: center; }
.contact-portrait::after { content: ""; position: absolute; inset: auto 10% 5%; height: 12%; border-radius: 50%; background: var(--neon); filter: blur(42px); opacity: .34; }
.contact-portrait img { position: relative; z-index: 1; width: min(84%, 410px); height: auto; max-height: 520px; object-fit: contain; object-position: center bottom; filter: drop-shadow(0 24px 34px rgba(18,57,75,.18)); }
.contact-copy h2 { max-width: 15ch; }
.contact-copy h3 { margin-top: 26px; font-size: clamp(1.75rem, 2.6vw, 2.6rem); }
.contact-signature { max-width: 18ch; line-height: 1.08; text-wrap: balance; }
.contact-signature span { display: block; margin-bottom: .55rem; color: var(--muted); font-size: .42em; font-weight: 760; line-height: 1.25; letter-spacing: .08em; text-transform: uppercase; }
.contact-role { max-width: 55ch; font-size: 1.08rem; }
.contact-actions { display: flex; flex-wrap: wrap; gap: 14px; }

.hint { width: 44px; height: 44px; margin: -7px 2px; }
.hint::after { inset: -4px; }
.hint [role="tooltip"] { position: absolute; left: var(--hint-local-x, 0); top: var(--hint-local-y, calc(100% + 12px)); right: auto; bottom: auto; font-size: .94rem; transform: translateY(var(--hint-shift-y, 8px)) scale(.97); transform-origin: 50% var(--hint-origin-y, 100%); }
.hint:hover [role="tooltip"], .hint:focus-visible [role="tooltip"], .hint.is-open [role="tooltip"] { transform: translateY(0) scale(1); }
.hint.is-open::after, .hint:focus-visible::after { animation-iteration-count: 2; }

.incident-layout > div { order: 1; }
.incident-layout > figure { order: 2; }
.evacuation-copy { order: 1; }
.evacuation-media { order: 2; }
.knowledge-intro { max-width: 960px; margin-bottom: 32px; }
.quiz input { width: 20px; height: 20px; margin-top: 3px; }
.quiz label { min-height: 46px; }

@media (prefers-reduced-motion: no-preference) {
  .civil-card.is-visible .civil-card-icon { animation: key-step-in 560ms var(--ease-enter) 120ms both; }
}

@media (hover: hover) and (pointer: fine) {
  .button:hover { transform: translateY(-3px); }
  .media-card:hover { border-color: color-mix(in srgb, var(--neon) 64%, var(--line)); box-shadow: var(--shadow-raised), var(--neon-glow); transform: translateY(-5px); }
  .media-card:hover img { transform: scale(1.025); }
  .soft-card:hover { border-color: var(--neon); box-shadow: 12px 12px 22px var(--shadow-dark), -10px -10px 22px var(--shadow-light), var(--neon-glow); transform: translateY(-5px); }
  .route-rules article:hover, .rule-stack article:hover, .cause-list article:hover, .five-rules li:hover { border-color: var(--accent-bright); transform: translateX(6px); }
  .color-code article:hover, .emergency-flow li:hover { transform: translateY(-5px); }
}

@media (min-width: 901px) and (max-width: 1180px) {
  .menu-button { display: block; }
  .hero { grid-template-columns: 1fr 1fr; }
  h1 { font-size: clamp(3.3rem, 6vw, 5.2rem); }
}

@media (max-width: 900px) {
  .menu-button { display: block; }
  .theme-switch button { width: 44px; height: 44px; }
  .hero { min-height: auto; padding: 48px 0 56px; grid-template-columns: minmax(0, 1fr); }
  .hero-media { aspect-ratio: 1.6; }
  .civil-defense-board, .contact-card { grid-template-columns: 1fr; }
  .civil-alert, .civil-threats, .civil-object, .civil-action { grid-column: auto; }
  .rescue-panel { grid-template-columns: 1fr; }
  .contact-copy { order: 1; }
  .contact-portrait { order: 2; min-height: 340px; }
}

@media (max-width: 620px) {
  body { font-size: 17px; }
  .hero { padding: 38px 0 48px; }
  .hero-media { aspect-ratio: 1.6; }
  .section { padding: 37px 0; }
  h1 { max-width: 13ch; font-size: clamp(2.75rem, 13vw, 4rem); line-height: .96; }
  h2 { max-width: 18ch; font-size: clamp(2.25rem, 9.8vw, 3.25rem); }
  .section-heading, .section-heading.compact { margin-bottom: 24px; }
  .split-heading { margin-bottom: 26px; }
  .kicker { font-size: .8rem; }
  .soft-panel { padding: 20px; }
  .soft-card { padding: 18px; }

  .why-layout { gap: 18px; }
  .why-layout .portrait { aspect-ratio: 1.82; }
  .reason-grid { gap: 10px; }
  .reason-grid .soft-card, .signal-grid .soft-card { display: grid; grid-template-columns: 42px minmax(0, 1fr); column-gap: 12px; align-items: start; }
  .reason-grid .card-index, .signal-grid .signal-mark { grid-row: span 2; margin: 2px 0 0; }
  .reason-grid h3, .signal-grid h3 { margin-bottom: 5px; }
  .reason-grid p, .signal-grid p { margin-bottom: 0; }
  .principles { margin-top: 18px; gap: 14px; }
  .check-list { gap: 9px; }

  .route-layout { gap: 18px; }
  .route-layout .wide { min-height: 0; aspect-ratio: 1.82; }
  .route-rules { gap: 9px; }
  .route-rules article, .rule-stack article, .cause-list article { padding: 15px 16px; }
  .prohibited { margin-top: 24px; padding: 20px; }
  .prohibited-grid { gap: 9px; }
  .prohibited-grid p { padding: 13px 13px 13px 17px; overflow-wrap: anywhere; }

  .risk-stage { gap: 18px; }
  .risk-stage > .media-card { aspect-ratio: 1.82; }
  .risk-cards { gap: 10px; }
  .risk-card { padding: 18px; }

  .preflight-grid { gap: 20px; }
  .preflight-grid > .media-card { aspect-ratio: 1.82; }
  .preflight-copy .check-list { margin-top: 20px; }
  .scenario { margin-top: 22px; padding: 18px; gap: 10px; }
  .scenario-answer { padding: 15px; }
  .electric-steps { margin-top: 28px; }
  .step-row { gap: 9px; }
  .step-row li { padding: 14px 15px; }
  .electric-bans { display: grid; grid-template-columns: 1fr; gap: 8px; }
  .electric-bans span { overflow-wrap: anywhere; }

  .protection-bento { gap: 12px; }
  .protection-bento .large, .protection-bento > .media-card:not(.large) { aspect-ratio: 1.82; }
  .ppe, .collective { padding: 20px; }
  .token-list { margin: 14px 0 18px; }
  .functional-list { gap: 9px; }

  .language-layout { gap: 20px; }
  .language-layout > .media-card { aspect-ratio: 1.82; }
  .color-code { margin-top: 22px; gap: 9px; }
  .color-code article { min-height: 0; padding: 15px; }
  .color-code span { margin-top: 7px; }
  .signal-grid { margin-top: 22px; gap: 10px; }
  .hygiene-row { margin-top: 20px; gap: 18px; }

  .incident-layout { gap: 20px; }
  .incident-layout > .media-card { aspect-ratio: 1.82; }
  .cause-list { gap: 9px; margin-top: 20px; }
  .case-note { margin-top: 22px; padding: 20px; }

  .civil-defense-board { gap: 14px; }
  .contact-card { padding: 22px; }
  .contact-portrait { min-height: 300px; }
  .contact-actions { align-items: stretch; flex-direction: column; }
  .contact-actions .button { padding-inline: 10px; overflow-wrap: normal; }
  .civil-card { min-height: 0; padding: 19px; }
  .civil-alert { grid-template-columns: 84px minmax(0, 1fr); gap: 16px; }
  .civil-signal { width: 80px; }
  .civil-card-icon { margin-bottom: 15px; }
  .civil-threats ul { gap: 7px; margin-top: 15px; }
  .civil-threats li { grid-template-columns: 1fr; gap: 3px; }
  .civil-distance, .civil-action ol { margin-top: 18px; }
  .rescue-panel { gap: 16px; padding: 18px; }
  .rescue-panel > * { min-width: 0; }
  .rescue-numbers { width: 100%; grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .civil-action ol, .rescue-numbers { gap: 8px; }
  .civil-action li { padding-inline: 10px; font-size: .86rem; }
  .rescue-numbers a { min-width: 0; padding-inline: 6px; }
  .rescue-numbers a span { font-size: .78rem; text-align: center; }

  .emergency-image { aspect-ratio: 1.82; }
  .emergency-flow { gap: 9px; margin-top: 22px; }
  .emergency-flow li { display: grid; min-height: 0; grid-template-columns: 42px minmax(0, 1fr); gap: 11px; align-items: start; padding: 14px 15px; }
  .emergency-flow li > span { margin: 0; font-size: 1.55rem; }
  .emergency-flow p { margin-top: 3px; }

  .fire-grid, .fire-facts { gap: 20px; }
  .fire-grid .media-card, .fire-facts > .media-card { aspect-ratio: 1.82; }
  .number-list, .aid-steps { gap: 9px; }
  .number-list li, .aid-steps li { gap: 10px; padding: 13px; }
  .fire-facts { margin-top: 22px; }
  .fact-stack { gap: 10px; }
  .fact-stack .soft-card { padding: 16px; }

  .evacuation { gap: 20px; }
  .evacuation-media { min-height: 0; aspect-ratio: 1.82; }
  .rule-stack { gap: 9px; margin-top: 20px; }
  .rule-stack .assembly-point { grid-template-columns: 42px minmax(0, 1fr); gap: 10px; }

  .aid-layout { gap: 20px; }
  .aid-layout .media-card { aspect-ratio: 1.82; }
  .aid-note { padding: 14px 16px; }

  .recap-layout { gap: 20px; }
  .recap-layout > .media-card { aspect-ratio: 1.82; }
  .five-rules { gap: 9px; margin-top: 22px; }
  .five-rules li { gap: 10px; padding: 14px 15px; }

  .knowledge-intro { margin-bottom: 24px; }
  .quiz { gap: 14px; }
  .quiz-status { grid-template-columns: auto minmax(80px, 1fr); gap: 12px; }
  .quiz fieldset { gap: 8px; padding: 17px; }
  .quiz label { padding: 10px; }
  .quiz-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; padding-top: 4px; }
  .quiz-actions .quiz-reset, .quiz-result { grid-column: 1 / -1; }
  .quiz-result { min-height: 0; }
  .quiz-official-note { padding: 14px 15px; }
}

@media (max-width: 620px) {
  .prohibited-grid, .color-code { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .scenario { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .scenario > :first-child { grid-column: 1 / -1; }
  .electric-bans { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 359px) {
  .prohibited-grid { grid-template-columns: 1fr; }
}

@media (min-width: 360px) and (max-width: 399px) {
  .prohibited-grid { grid-template-columns: 1fr; }
  .prohibited-grid p { overflow-wrap: normal; word-break: normal; }
}

@media (max-width: 340px) {
  .section { padding: 20px 0; }
  .section-heading, .section-heading.compact { margin-bottom: 18px; }
}

@media (max-width: 330px) {
  .civil-action ol { grid-template-columns: 1fr; }
}

@media (min-width: 360px) and (max-width: 620px) {
  .fact-stack { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .civil-alert { grid-template-columns: 96px minmax(0, 1fr); }
  .civil-signal { width: 92px; }
}

.button:disabled,
.button:disabled:hover {
  cursor: not-allowed;
  opacity: .5;
  transform: none;
  box-shadow: var(--shadow-inset);
}

/* 2026-09-04 bento system: the ГО и ЧС visual language becomes site-wide. */
:root {
  --bento-line: color-mix(in srgb, var(--neon) 28%, var(--line));
  --bento-fill-a: color-mix(in srgb, var(--surface-strong) 94%, transparent);
  --bento-fill-b: color-mix(in srgb, var(--accent) 7%, var(--surface));
}

body { font-family: "Segoe UI Variable Text", "Segoe UI Variable", "Segoe UI", Arial, sans-serif; }
h1, h2, h3 { font-family: "Segoe UI Variable Display", "Segoe UI Variable", "Segoe UI", Arial, sans-serif; }

.hero::before {
  inset: 3% -8% 5% 22%;
  border-radius: 42px;
  background:
    radial-gradient(circle at 72% 30%, rgba(49, 213, 255, .42) 0 5px, transparent 6px),
    radial-gradient(circle at 42% 74%, rgba(49, 213, 255, .28) 0 4px, transparent 5px),
    radial-gradient(circle at 58% 48%, rgba(49, 213, 255, .28), transparent 58%),
    repeating-linear-gradient(90deg, transparent 0 39px, rgba(49, 213, 255, .1) 40px),
    repeating-linear-gradient(0deg, transparent 0 39px, rgba(49, 213, 255, .1) 40px);
  filter: none;
  mask-image: linear-gradient(90deg, transparent 0%, #000 24%, #000 88%, transparent 100%);
}

.section:nth-of-type(odd)::before { right: auto; left: max(-5vw, -72px); transform: rotate(-4deg); }
.section:nth-of-type(even)::before { transform: rotate(4deg); }

.media-card {
  border-color: color-mix(in srgb, var(--neon) 34%, var(--line));
  background: var(--surface);
  box-shadow: var(--shadow-raised), 0 0 34px color-mix(in srgb, var(--neon-soft) 64%, transparent);
}
.media-card::before {
  content: "";
  position: absolute;
  z-index: 2;
  top: 18px;
  left: 18px;
  width: 58px;
  height: 8px;
  border-left: 2px solid var(--neon);
  border-right: 2px solid var(--neon);
  background: repeating-linear-gradient(90deg, var(--neon) 0 7px, transparent 7px 12px);
  filter: drop-shadow(0 0 8px var(--neon));
  opacity: .78;
  pointer-events: none;
}

:is(
  .soft-card,
  .soft-panel,
  .risk-card,
  .route-rules article,
  .rule-stack article,
  .cause-list article,
  .step-row li,
  .number-list li,
  .aid-steps li,
  .five-rules li,
  .emergency-flow li,
  .quiz fieldset,
  .preflight-copy,
  .language-copy,
  .incident-layout > div,
  .fire-copy,
  .evacuation-copy,
  .aid-layout > div,
  .recap-layout > div,
  .closing-copy
) {
  border: 1px solid var(--bento-line);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at calc(100% + 76px) calc(100% + 86px), transparent 0 116px, color-mix(in srgb, var(--neon) 18%, transparent) 117px 118px, transparent 119px),
    linear-gradient(145deg, var(--bento-fill-a), var(--bento-fill-b));
  box-shadow: var(--shadow-raised);
}

.soft-card,
.risk-card,
.route-rules article,
.rule-stack article,
.cause-list article,
.step-row li,
.number-list li,
.aid-steps li,
.five-rules li,
.emergency-flow li,
.quiz fieldset { border-radius: var(--radius-small); }

.preflight-copy,
.language-copy,
.incident-layout > div,
.fire-copy,
.evacuation-copy,
.aid-layout > div,
.recap-layout > div,
.closing-copy { padding: clamp(26px, 3.5vw, 46px); }

.card-index,
.signal-mark,
.scenario-label,
.route-rules span,
.five-rules span { color: var(--accent); text-transform: uppercase; letter-spacing: .13em; }

.principles,
.scenario,
.hygiene-row,
.case-note,
.rescue-panel,
.contact-card,
.quiz { border-color: color-mix(in srgb, var(--neon) 42%, var(--line)); }

.why-layout,
.route-layout,
.risk-stage,
.preflight-grid,
.language-layout,
.incident-layout,
.fire-grid,
.fire-facts,
.evacuation,
.aid-layout,
.recap-layout,
.closing,
.contact-card {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 22px;
  align-items: stretch;
}

.why-layout > .portrait,
.risk-stage > .media-card,
.incident-layout > .media-card,
.language-layout > .media-card,
.fire-grid > .media-card,
.fire-facts > .media-card,
.evacuation > .evacuation-media,
.aid-layout > .media-card,
.recap-layout > .media-card,
.contact-card > .contact-portrait { grid-column: span 5; }

.why-layout > .reason-grid,
.risk-stage > .risk-cards,
.incident-layout > div,
.language-layout > .language-copy,
.fire-grid > .fire-copy,
.fire-facts > .fact-stack,
.evacuation > .evacuation-copy,
.aid-layout > div,
.recap-layout > div,
.contact-card > .contact-copy { grid-column: span 7; }

.route-layout > .wide,
.preflight-grid > .media-card { grid-column: span 7; }
.route-layout > .route-rules,
.preflight-grid > .preflight-copy { grid-column: span 5; }

.principles { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.principles > h3 { grid-column: span 4; }
.principles > .check-list { grid-column: span 8; }
.scenario { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.scenario > * { grid-column: span 4; }
.hygiene-row { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.hygiene-row > figure { grid-column: span 5; }
.hygiene-row > div { grid-column: span 7; align-self: center; }

.protection-bento,
.civil-defense-board { grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 22px; }

.emergency {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 22px;
  align-items: stretch;
}
.emergency > .section-heading { grid-column: 1 / -1; }
.emergency > .emergency-image { grid-column: span 7; min-height: 600px; aspect-ratio: auto; }
.emergency > .emergency-flow { grid-column: span 5; display: grid; grid-template-columns: 1fr; gap: 12px; margin: 0; }
.emergency-flow li { min-height: 0; display: grid; grid-template-columns: 54px minmax(0, 1fr); gap: 16px; align-items: center; padding: 18px 20px; }
.emergency-flow li > span { margin: 0; }

.knowledge {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 22px;
  align-items: start;
}
.knowledge > .knowledge-intro { grid-column: span 5; position: sticky; top: calc(var(--header-h) + 32px); margin: 0; padding: clamp(26px, 3.5vw, 46px); border: 1px solid var(--bento-line); border-radius: var(--radius); background: linear-gradient(145deg, var(--bento-fill-a), var(--bento-fill-b)); box-shadow: var(--shadow-raised); }
.knowledge > .quiz { grid-column: span 7; }

.contact-card { padding: 0; border: 0; background: transparent; box-shadow: none; overflow: visible; }
.contact-copy { padding: clamp(26px, 4vw, 52px); border: 1px solid var(--bento-line); border-radius: var(--radius); background: linear-gradient(145deg, var(--bento-fill-a), var(--bento-fill-b)); box-shadow: var(--shadow-raised); }

.closing { min-height: 0; align-items: stretch; }
.closing-media { position: relative; inset: auto; grid-column: span 7; min-height: 560px; }
.closing-media::after { background: linear-gradient(180deg, transparent 52%, rgba(8, 19, 26, .34)); }
.closing-copy { grid-column: span 5; z-index: 2; max-width: none; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; }
.closing-copy h2 { color: var(--text); }
.closing-copy p { color: var(--muted); }

@media (min-width: 901px) {
  .incident-layout > .media-card {
    align-self: start;
    aspect-ratio: 1.35;
  }
  .incident-layout > .media-card img { object-position: center; }
  .aid-layout > .media-card {
    align-self: start;
    height: clamp(640px, 72vh, 780px);
  }
}

.case-note { padding: clamp(24px, 3vw, 38px); }
.electric-bans span { font-size: .96rem; line-height: 1.38; }

.civil-signal-stack { display: grid; justify-items: center; gap: 10px; }

@media (prefers-reduced-motion: no-preference) {
  .civil-signal.is-looping .wave-one { animation: civil-signal-loop 3.2s var(--ease-standard) infinite; }
  .civil-signal.is-looping .wave-two { animation: civil-signal-loop 3.2s var(--ease-standard) 1.6s infinite; }
  .civil-signal.is-looping img { transform-origin: 50% 82%; animation: civil-siren-loop 4.8s ease-in-out infinite; will-change: transform; }
}

@keyframes civil-signal-loop {
  0% { opacity: 0; transform: scale(.6); }
  12% { opacity: .68; }
  74%, 100% { opacity: 0; transform: scale(1.72); }
}
@keyframes civil-siren-loop {
  0%, 25%, 100% { transform: rotate(0) scale(1); }
  5% { transform: rotate(-5deg) scale(1.02); }
  10% { transform: rotate(5deg) scale(1.02); }
  15% { transform: rotate(-3deg) scale(1.01); }
  20% { transform: rotate(3deg) scale(1.01); }
}

@media (max-width: 900px) {
  .why-layout,
  .route-layout,
  .risk-stage,
  .preflight-grid,
  .language-layout,
  .incident-layout,
  .fire-grid,
  .fire-facts,
  .evacuation,
  .aid-layout,
  .recap-layout,
  .closing,
  .contact-card,
  .civil-defense-board,
  .emergency,
  .knowledge { grid-template-columns: minmax(0, 1fr); }

  .why-layout > *,
  .route-layout > *,
  .risk-stage > *,
  .preflight-grid > *,
  .language-layout > *,
  .incident-layout > *,
  .fire-grid > *,
  .fire-facts > *,
  .evacuation > *,
  .aid-layout > *,
  .recap-layout > *,
  .closing > *,
  .contact-card > *,
  .civil-defense-board > *,
  .emergency > *,
  .knowledge > * { grid-column: 1 / -1 !important; }

  .principles > h3,
  .principles > .check-list,
  .scenario > *,
  .hygiene-row > figure,
  .hygiene-row > div { grid-column: 1 / -1; }
  .principles,
  .scenario,
  .hygiene-row { grid-template-columns: minmax(0, 1fr); }

  .knowledge > .knowledge-intro { position: relative; top: auto; }
  .emergency > .emergency-image { min-height: 0; aspect-ratio: 1.6; }
  .split-heading { gap: 16px; align-items: start; margin-bottom: 28px; }
  .closing-copy { order: 1; }
  .closing-media { order: 2; min-height: 420px; }
  .section::before { width: 88vw; opacity: .52; }
}

@media (max-width: 620px) {
  .section::before { top: 4%; width: 112vw; opacity: .42; }
  .civil-defense-board { gap: 14px; }
  .media-card::before { top: 12px; left: 12px; width: 46px; }
  .preflight-copy,
  .language-copy,
  .incident-layout > div,
  .fire-copy,
  .evacuation-copy,
  .aid-layout > div,
  .recap-layout > div,
  .closing-copy,
  .knowledge > .knowledge-intro,
  .contact-copy { padding: 20px; }
  .civil-signal-stack { gap: 7px; }
  .fact-stack,
  .quiz-actions { grid-template-columns: minmax(0, 1fr); }
  .quiz-actions > .button,
  .quiz-actions .quiz-reset,
  .quiz-result { grid-column: 1 / -1; }
  .electric-bans span { font-size: .9rem; }
  .closing-media { min-height: 0; aspect-ratio: 1.35; }
}

@media (prefers-reduced-motion: reduce) {
  .civil-signal .signal-wave { opacity: 0; }
  .civil-signal img { transform: none; }
}

/* Safety route visual system · 2026-09-04 */
.section { isolation: isolate; }
.section::before {
  inset: 0 auto auto 50%;
  width: 100vw;
  height: 100%;
  aspect-ratio: auto;
  border-radius: 0;
  transform: translateX(-50%) !important;
  opacity: .62;
  mask-image: linear-gradient(90deg, transparent 0, #000 8%, #000 92%, transparent 100%);
  background:
    radial-gradient(circle at 10% 18%, transparent 0 36px, color-mix(in srgb, var(--neon) 28%, transparent) 37px 39px, transparent 40px),
    radial-gradient(circle at 88% 76%, transparent 0 72px, color-mix(in srgb, var(--accent-2) 22%, transparent) 73px 76px, transparent 77px),
    linear-gradient(135deg, transparent 49.6%, color-mix(in srgb, var(--neon) 13%, transparent) 49.7% 50.3%, transparent 50.4%),
    repeating-linear-gradient(90deg, transparent 0 47px, color-mix(in srgb, var(--neon) 8%, transparent) 48px),
    repeating-linear-gradient(0deg, transparent 0 47px, color-mix(in srgb, var(--neon) 8%, transparent) 48px);
  background-size: auto, auto, 240px 240px, 48px 48px, 48px 48px;
}
.section:nth-of-type(even)::before {
  background:
    radial-gradient(circle at 84% 20%, transparent 0 44px, color-mix(in srgb, var(--accent) 24%, transparent) 45px 47px, transparent 48px),
    radial-gradient(circle at 14% 72%, transparent 0 88px, color-mix(in srgb, var(--neon) 22%, transparent) 89px 92px, transparent 93px),
    radial-gradient(circle, color-mix(in srgb, var(--neon) 18%, transparent) 0 2px, transparent 3px) 0 0 / 34px 34px,
    linear-gradient(155deg, transparent 49.7%, color-mix(in srgb, var(--accent-2) 12%, transparent) 49.8% 50.2%, transparent 50.3%);
}

/* Rings now live on every informational tile, not only the civil-defense board. */
:is(.soft-card, .route-rules article, .risk-card, .prohibited-grid article, .principle-card, .scenario-answer, .electric-bans article, .color-code article, .signal-grid article, .cause-list article, .emergency-flow li, .fire-mindmap .number-list li, .rule-stack article, .aid-steps li, .five-rules li, .quiz, .knowledge-intro, .case-note, .fact-stack article) {
  background-image:
    radial-gradient(circle at 92% 13%, transparent 0 26px, color-mix(in srgb, var(--neon) 25%, transparent) 27px 29px, transparent 30px),
    radial-gradient(circle at 4% 104%, transparent 0 48px, color-mix(in srgb, var(--accent-2) 17%, transparent) 49px 51px, transparent 52px),
    linear-gradient(145deg, var(--bento-fill-a), var(--bento-fill-b));
}

.hero {
  grid-template-columns: repeat(12, minmax(0, 1fr));
  align-items: start;
  gap: 34px 18px;
  padding-top: clamp(48px, 6vw, 86px);
}
.hero-copy { grid-column: 1 / 10; max-width: 1040px; }
.hero-media { grid-column: 1 / -1; width: 100%; aspect-ratio: 2.25; min-height: 480px; }
.hero-media img { object-position: center 42%; }

.principles { display: block; padding: 0; background: none; border: 0; box-shadow: none; }
.principles > h3 { margin-bottom: 20px; }
.principles-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.principle-card {
  position: relative;
  min-height: 250px;
  padding: 24px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--principle) 56%, var(--line));
  border-radius: var(--radius-small);
  color: var(--text);
  box-shadow: var(--shadow-soft), 0 0 24px color-mix(in srgb, var(--principle) 18%, transparent);
}
.principle-card::before, .principle-card::after { content: ""; position: absolute; pointer-events: none; }
.principle-card::before { inset: -34%; background: repeating-conic-gradient(from 30deg, color-mix(in srgb, var(--principle) 18%, transparent) 0 10deg, transparent 10deg 26deg); transform: translate3d(-12%, 8%, 0) rotate(-8deg); opacity: .65; }
.principle-card::after { width: 132px; height: 132px; right: -38px; bottom: -38px; border: 3px solid color-mix(in srgb, var(--principle) 58%, transparent); border-radius: 50%; box-shadow: 0 0 30px color-mix(in srgb, var(--principle) 32%, transparent); }
.principle-card > * { position: relative; z-index: 1; }
.principle-card > span { display: block; color: var(--principle); font-size: 3rem; font-weight: 850; line-height: 1; text-shadow: 0 0 22px color-mix(in srgb, var(--principle) 46%, transparent); }
.principle-card p { margin: 72px 0 0; font-size: 1.08rem; font-weight: 740; line-height: 1.4; }
.principle-blue { --principle: #31d5ff; }
.principle-violet { --principle: #9b7bff; }
.principle-green { --principle: #43efa5; }
.principle-orange { --principle: #ff9b58; }
.principles.is-visible .principle-card::before { animation: principle-pattern-enter 1.4s var(--ease-enter) both; }
@keyframes principle-pattern-enter { from { transform: translate3d(-30%, 18%, 0) rotate(-18deg); opacity: 0; } to { transform: translate3d(-12%, 8%, 0) rotate(-8deg); opacity: .65; } }

.route { position: relative; }
.route-trace { position: absolute; z-index: -1; inset: 4% 50% auto; width: 100vw; height: 78%; transform: translateX(-50%); overflow: visible; pointer-events: none; opacity: .58; }
.route-trace path { fill: none; stroke: color-mix(in srgb, var(--neon) 68%, transparent); stroke-width: 5; stroke-linecap: round; stroke-dasharray: 10 18; filter: drop-shadow(0 0 8px var(--neon)); path-length: 1; stroke-dashoffset: 1460; }
.route-trace.is-visible path { animation: route-build 2.1s var(--ease-enter) both; }
@keyframes route-build { from { stroke-dasharray: 0 1600; } to { stroke-dasharray: 10 18; stroke-dashoffset: 0; } }
.prohibited { position: relative; overflow: visible; background: color-mix(in srgb, var(--danger) 5%, var(--surface)); }
.prohibited-grid { align-items: stretch; }
.prohibited-grid article { position: relative; display: grid; grid-template-columns: 42px minmax(0, 1fr); gap: 14px; min-height: 300px; padding: 24px; border: 1px solid color-mix(in srgb, var(--danger) 42%, var(--line)); border-radius: var(--radius-small); box-shadow: var(--shadow-soft), 0 0 24px color-mix(in srgb, var(--danger) 10%, transparent); }
.prohibited-grid article > img { padding: 8px; width: 40px; height: 40px; border-radius: 12px; background: color-mix(in srgb, var(--danger) 13%, var(--surface)); }
.prohibited-grid article > div > span { color: var(--danger); font-size: .72rem; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
.prohibited-grid h4 { margin: 8px 0 16px; font-size: 1.25rem; }
.prohibited-grid ul { margin: 0; padding-left: 18px; color: var(--muted); }
.prohibited-grid li + li { margin-top: 12px; }
.prohibited-grid .hint { position: absolute; right: 16px; bottom: 16px; }

.risks { padding-top: clamp(54px, 6vw, 86px); }
.risk-stage { grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 18px; align-items: stretch; }
.risk-stage > .media-card { grid-column: span 7; min-height: 650px; aspect-ratio: auto; }
.risk-stage > .risk-cards { grid-column: span 5; gap: 14px; }
.risk-card { display: flex; flex-direction: column; justify-content: center; min-height: 0; padding: 24px; overflow: hidden; }
.risk-card-title { display: flex; align-items: center; gap: 12px; margin-bottom: 15px; }
.risk-card-title img { width: 42px; height: 42px; padding: 9px; border-radius: 13px; background: color-mix(in srgb, var(--risk-color) 16%, var(--surface)); }
.risk-card h3 { margin: 0; color: var(--risk-color); }
.risk-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.risk-card .risk-tags p { display: block; margin: 0; padding: 7px 10px; border: 1px solid color-mix(in srgb, var(--risk-color) 25%, var(--line)); border-radius: 999px; font-size: .84rem; line-height: 1.3; }
.risk-card p:not(:last-child)::after { content: none; }
.risk-card.physical { --risk-color: #31d5ff; border-color: color-mix(in srgb, #31d5ff 42%, var(--line)); }
.risk-card.chemical { --risk-color: #ffad45; border-color: color-mix(in srgb, #ffad45 42%, var(--line)); }
.risk-card.biological { --risk-color: #43efa5; border-color: color-mix(in srgb, #43efa5 42%, var(--line)); }

.spark-funnel { position: relative; padding: clamp(26px, 4vw, 48px); border: 1px solid var(--bento-line); border-radius: var(--radius); background: linear-gradient(145deg, var(--bento-fill-a), var(--bento-fill-b)); box-shadow: var(--shadow-raised); }
.funnel-steps { display: grid; justify-items: center; gap: 10px; margin: 28px 0 0; padding: 0; list-style: none; }
.funnel-steps li { display: flex; align-items: center; gap: 14px; width: calc(100% - var(--narrow)); padding: 17px 22px; border: 1px solid color-mix(in srgb, var(--neon) 42%, var(--line)); border-radius: 14px; background: linear-gradient(90deg, color-mix(in srgb, var(--neon) 13%, var(--surface)), var(--surface)); box-shadow: var(--shadow-soft), 0 0 18px var(--neon-soft); transform: scaleX(.82); opacity: 0; }
.funnel-steps li:nth-child(1) { --narrow: 0%; }
.funnel-steps li:nth-child(2) { --narrow: 14%; }
.funnel-steps li:nth-child(3) { --narrow: 28%; }
.funnel-steps span { display: grid; place-items: center; flex: 0 0 34px; height: 34px; border-radius: 50%; background: var(--accent); color: #fff; font-weight: 850; }
.spark-funnel.is-visible .funnel-steps li { animation: funnel-open .7s var(--ease-enter) forwards; }
.spark-funnel.is-visible .funnel-steps li:nth-child(2) { animation-delay: 110ms; }
.spark-funnel.is-visible .funnel-steps li:nth-child(3) { animation-delay: 220ms; }
@keyframes funnel-open { to { transform: scaleX(1); opacity: 1; } }
.electric-bans { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.electric-bans article { min-height: 132px; padding: 20px; border: 1px solid color-mix(in srgb, var(--danger) 35%, var(--line)); border-radius: 15px; box-shadow: var(--shadow-soft); }
.electric-bans small, .electric-bans b { display: block; }
.electric-bans small { color: var(--danger); font-size: .72rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.electric-bans b { margin-top: 28px; font-size: 1.04rem; }

.color-code article { position: relative; overflow: hidden; isolation: isolate; border: 1px solid rgba(255,255,255,.34); }
.color-code article::before { content: ""; position: absolute; z-index: -1; inset: 0; background: radial-gradient(circle at 90% 14%, transparent 0 30px, rgba(255,255,255,.26) 31px 33px, transparent 34px), repeating-linear-gradient(135deg, transparent 0 18px, rgba(255,255,255,.08) 19px 20px); transition: transform .55s var(--ease-enter); }
.color-code article i { position: absolute; right: -20px; bottom: -20px; width: 88px; height: 88px; border: 2px solid rgba(255,255,255,.3); transform: rotate(45deg); transition: transform .55s var(--ease-enter); }

.incident-photo-band { position: relative; display: flex; align-items: flex-end; width: 100%; min-height: 760px; padding: clamp(28px, 5vw, 70px); overflow: hidden; border: 1px solid var(--bento-line); border-radius: var(--radius); background: linear-gradient(90deg, rgba(7,15,25,.92) 0%, rgba(7,15,25,.7) 46%, rgba(7,15,25,.08) 78%), url("assets/images/story-02-d.webp?v=20260907-duo") center 36% / cover no-repeat; box-shadow: var(--shadow-raised), var(--neon-glow); }
.incident-copy { width: min(760px, 68%); color: #f5fbff; }
.incident-copy h2, .incident-copy p { color: inherit; }
.cause-list { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.cause-list article { position: relative; display: flex; flex-direction: column; min-height: 270px; padding: 20px; border: 1px solid var(--cause); border-left-width: 1px; border-radius: 16px; background-color: rgba(11,23,34,.82); backdrop-filter: blur(14px); box-shadow: 0 18px 38px rgba(0,0,0,.24), 0 0 22px color-mix(in srgb, var(--cause) 20%, transparent); }
.cause-list article > img { width: 46px; height: 46px; padding: 10px; border-radius: 14px; background: color-mix(in srgb, var(--cause) 22%, #0b1722); }
.cause-list article > b { margin-top: 34px; }
.cause-list article > span { margin-top: 7px; color: rgba(245,251,255,.78); font-size: .84rem; }
.cause-list article > .hint { position: absolute; right: 14px; bottom: 14px; }
.cause-technical { --cause: #31d5ff; }
.cause-organization { --cause: #ffad45; }
.cause-personal { --cause: #9b7bff; }
.incident-photo-band.is-visible .cause-list article > img { animation: cause-icon-in .8s var(--ease-enter) both; }
.incident-photo-band.is-visible .cause-list article:nth-child(2) > img { animation-delay: 120ms; }
.incident-photo-band.is-visible .cause-list article:nth-child(3) > img { animation-delay: 240ms; }
@keyframes cause-icon-in { from { opacity: 0; transform: translateY(18px) rotate(-18deg) scale(.7); } to { opacity: 1; transform: none; } }

.emergency { align-items: stretch; }
.emergency-funnel { align-content: center; justify-items: center; gap: 11px; }
.emergency-funnel li { position: relative; width: calc(100% - var(--funnel-cut)); grid-template-columns: 54px minmax(0, 1fr) 40px; transform: translateY(18px) scaleX(.86); opacity: 0; }
.emergency-funnel li:nth-child(1) { --funnel-cut: 0%; }
.emergency-funnel li:nth-child(2) { --funnel-cut: 8%; }
.emergency-funnel li:nth-child(3) { --funnel-cut: 16%; }
.emergency-funnel li:nth-child(4) { --funnel-cut: 24%; }
.emergency-funnel li:nth-child(5) { --funnel-cut: 32%; }
.emergency-funnel.is-visible li { animation: emergency-stage .62s var(--ease-enter) forwards; }
.emergency-funnel.is-visible li:nth-child(2) { animation-delay: 90ms; }
.emergency-funnel.is-visible li:nth-child(3) { animation-delay: 180ms; }
.emergency-funnel.is-visible li:nth-child(4) { animation-delay: 270ms; }
.emergency-funnel.is-visible li:nth-child(5) { animation-delay: 360ms; }
@keyframes emergency-stage { to { opacity: 1; transform: none; } }
.mindmap-hint [role="tooltip"] { width: min(300px, calc(100vw - 28px)); display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.mindmap-core { grid-column: 1 / -1; padding: 8px; border-radius: 9px; background: color-mix(in srgb, var(--accent) 22%, var(--surface)); color: var(--accent); text-align: center; font-weight: 850; }
.mindmap-node { position: relative; padding: 8px; border: 1px solid var(--line); border-radius: 9px; text-align: center; }

.fire-grid { grid-template-columns: minmax(0, 1.3fr) minmax(340px, .7fr); align-items: stretch; }
.fire-grid > .media-card { min-height: 820px; }
.fire-copy { padding: clamp(28px, 4vw, 52px); }
.fire-mindmap { position: relative; min-height: 570px; margin-top: 28px; display: grid; place-items: center; }
.fire-mindmap > svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.fire-mindmap > svg path { fill: none; stroke: color-mix(in srgb, var(--danger) 56%, var(--neon)); stroke-width: 2.5; stroke-dasharray: 6 8; filter: drop-shadow(0 0 6px color-mix(in srgb, var(--danger) 45%, transparent)); stroke-dashoffset: 900; }
.fire-copy.is-visible .fire-mindmap > svg path { animation: fire-links 1.8s var(--ease-enter) .25s forwards; }
@keyframes fire-links { to { stroke-dashoffset: 0; } }
.fire-core { position: relative; z-index: 2; display: grid; place-items: center; gap: 9px; width: 162px; aspect-ratio: 1; border: 1px solid color-mix(in srgb, var(--danger) 58%, var(--line)); border-radius: 50%; background: color-mix(in srgb, var(--danger) 11%, var(--surface)); box-shadow: var(--shadow-raised), 0 0 34px color-mix(in srgb, var(--danger) 24%, transparent); text-align: center; }
.fire-mindmap .number-list { position: absolute; inset: 0; margin: 0; padding: 0; list-style: none; }
.fire-mindmap .number-list li { position: absolute; display: grid; grid-template-columns: 36px minmax(0, 1fr) 34px; gap: 10px; width: 42%; min-height: 190px; padding: 18px; border: 1px solid color-mix(in srgb, var(--danger) 36%, var(--line)); border-radius: 16px; box-shadow: var(--shadow-soft); }
.fire-mindmap .number-list li:nth-child(1) { left: 0; top: 0; }
.fire-mindmap .number-list li:nth-child(2) { right: 0; top: 0; }
.fire-mindmap .number-list li:nth-child(3) { left: 0; bottom: 0; }
.fire-mindmap .number-list li:nth-child(4) { right: 0; bottom: 0; }
.fire-mindmap .number-list li > span { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--danger); color: #fff; font-weight: 850; }
.fire-mindmap .number-list p { margin: 6px 0 0; font-size: .78rem; line-height: 1.4; }
.fire-mindmap .number-list .hint { align-self: start; }

.knowledge { align-items: stretch; }
.knowledge > .knowledge-intro { position: relative; top: auto; height: 100%; overflow: hidden; }
.knowledge > .knowledge-intro::after { content: "5"; position: absolute; right: -12px; bottom: -42px; color: color-mix(in srgb, var(--neon) 10%, transparent); font-size: clamp(14rem, 24vw, 25rem); font-weight: 900; line-height: .8; pointer-events: none; }
.knowledge > .quiz { height: 100%; }

.contact-card { align-items: stretch; }
.contact-card > .contact-portrait { min-height: 590px; overflow: visible; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
.contact-portrait::after { display: none; }
.contact-portrait img { width: min(100%, 540px); max-height: 650px; transform: scaleX(-1); filter: drop-shadow(0 24px 34px rgba(18,57,75,.16)); mask-image: linear-gradient(to bottom, #000 0 73%, transparent 98%); }

@media (hover: hover) and (pointer: fine) {
  .principle-card:hover::before { transform: translate3d(4%, -4%, 0) rotate(10deg); transition: transform .7s var(--ease-enter); }
  .principle-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-raised), 0 0 34px color-mix(in srgb, var(--principle) 34%, transparent); }
  .color-code article:hover { transform: translateY(-10px) scale(1.035); box-shadow: 0 22px 48px color-mix(in srgb, currentColor 22%, transparent), 0 0 28px rgba(255,255,255,.18); }
  .color-code article:hover::before { transform: translate3d(-8%, 6%, 0) scale(1.18) rotate(8deg); }
  .color-code article:hover i { transform: rotate(135deg) scale(1.35); }
  .prohibited-grid article:hover, .risk-card:hover, .cause-list article:hover { transform: translateY(-7px); }
}

@media (max-width: 1180px) {
  .principles-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cause-list { grid-template-columns: 1fr; }
  .cause-list article { min-height: 170px; }
  .incident-copy { width: min(680px, 78%); }
  .fire-mindmap .number-list li { width: 45%; }
}

@media (max-width: 900px) {
  .section::before { width: 100vw; height: 100%; opacity: .5; }
  .hero { grid-template-columns: minmax(0, 1fr); }
  .hero-copy, .hero-media { grid-column: 1 / -1; }
  .hero-media { min-height: 0; aspect-ratio: 1.45; }
  .risk-stage { grid-template-columns: minmax(0, 1fr); }
  .risk-stage > .media-card, .risk-stage > .risk-cards { grid-column: 1 / -1; }
  .risk-stage > .media-card { min-height: 0; aspect-ratio: 1.35; }
  .prohibited-grid, .electric-bans { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .prohibited-grid article { min-height: 260px; }
  .incident-photo-band { min-height: 820px; background-position: 62% center; }
  .incident-copy { width: 72%; }
  .emergency-funnel li { grid-template-columns: 48px minmax(0, 1fr) 40px; }
  .fire-grid { grid-template-columns: minmax(0, 1fr); }
  .fire-grid > .media-card { min-height: 0; aspect-ratio: 1.4; }
  .knowledge > .knowledge-intro { min-height: 430px; }
}

@media (max-width: 620px) {
  .section::before { top: 0; width: 100vw; opacity: .42; }
  .hero-media { aspect-ratio: 1.1; }
  .principles-grid, .prohibited-grid, .electric-bans { grid-template-columns: minmax(0, 1fr); }
  .principle-card { min-height: 210px; }
  .principle-card p { margin-top: 42px; }
  .prohibited-grid article { min-height: 0; padding-bottom: 62px; }
  .route-trace { height: 88%; }
  .funnel-steps li { width: 100%; }
  .electric-bans article { min-height: 112px; }
  .incident-photo-band { min-height: 940px; padding: 20px; background-position: 64% center; }
  .incident-copy { width: 100%; }
  .cause-list article { min-height: 178px; }
  .emergency-funnel li { width: 100%; }
  .fire-copy { padding: 20px; }
  .fire-mindmap { min-height: 0; display: block; }
  .fire-core, .fire-mindmap > svg { display: none; }
  .fire-mindmap .number-list { position: static; display: grid; gap: 12px; }
  .fire-mindmap .number-list li { position: relative; inset: auto !important; width: 100%; min-height: 0; grid-template-columns: 36px minmax(0, 1fr) 34px; }
  .contact-card > .contact-portrait { min-height: 440px; }
  .contact-portrait img { width: min(110%, 440px); }
}

@media (prefers-reduced-motion: reduce) {
  .principles.is-visible .principle-card::before,
  .route-trace.is-visible path,
  .spark-funnel.is-visible .funnel-steps li,
  .incident-photo-band.is-visible .cause-list article > img,
  .emergency-funnel.is-visible li,
  .fire-copy.is-visible .fire-mindmap > svg path { animation: none !important; }
  .funnel-steps li, .emergency-funnel li { transform: none; opacity: 1; }
  .route-trace path, .fire-mindmap > svg path { stroke-dashoffset: 0; }
}

/* Inline detail cards: expanded hints must never cover adjacent content. */
:is(.prohibited-grid article, .cause-list article, .fire-mindmap .number-list li, .emergency-funnel li) > .hint.is-open {
  position: relative;
  inset: auto;
  grid-column: 1 / -1;
  align-self: stretch;
  justify-self: stretch;
  display: block;
  width: 100%;
  height: auto;
  min-height: 74px;
  margin: 16px 0 0;
  padding: 16px 54px 16px 17px;
  overflow: visible;
  border-radius: 15px;
  background: color-mix(in srgb, var(--surface-strong) 94%, var(--neon) 6%);
  box-shadow: var(--shadow-inset), 0 0 22px var(--neon-soft);
  color: var(--text);
  text-align: left;
  cursor: pointer;
  animation: inline-hint-in .28s var(--ease-enter) both;
}
:is(.prohibited-grid article, .cause-list article, .fire-mindmap .number-list li, .emergency-funnel li) > .hint.is-open > img {
  position: absolute;
  top: 15px;
  right: 15px;
}
:is(.prohibited-grid article, .cause-list article, .fire-mindmap .number-list li, .emergency-funnel li) > .hint.is-open > [role="tooltip"] {
  position: static;
  inset: auto;
  display: block;
  width: auto;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  color: inherit;
  opacity: 1;
  visibility: visible;
  transform: none;
  backdrop-filter: none;
}
.emergency-funnel li > .mindmap-hint.is-open > [role="tooltip"] { display: grid; }
.fire-mindmap:has(.hint.is-open) { min-height: 760px; }
.fire-mindmap .number-list li:has(> .hint.is-open) { z-index: 4; min-height: 300px; }

@keyframes inline-hint-in {
  from { opacity: 0; transform: translateY(-8px) scale(.985); }
  to { opacity: 1; transform: none; }
}

@media (hover: hover) and (pointer: fine) {
  :is(.prohibited-grid article, .cause-list article, .fire-mindmap .number-list li, .emergency-funnel li) > .hint:not(.is-open):hover > [role="tooltip"],
  :is(.prohibited-grid article, .cause-list article, .fire-mindmap .number-list li, .emergency-funnel li) > .hint:not(.is-open):focus-visible > [role="tooltip"] {
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px) scale(.96);
  }
}

@media (max-width: 620px) {
  .fire-mindmap:has(.hint.is-open) { min-height: 0; }
  .fire-mindmap .number-list li:has(> .hint.is-open) { min-height: 0; }
}

@media (prefers-reduced-motion: reduce) {
  :is(.prohibited-grid article, .cause-list article, .fire-mindmap .number-list li, .emergency-funnel li) > .hint.is-open { animation: none; }
}