/* ===== Шрифты (локальные, OFL) ===== */
@font-face { font-family: "Unbounded"; font-weight: 700; font-display: swap; src: url(fonts/unbounded-latin-700-normal.woff2) format("woff2"); unicode-range: U+0000-00FF, U+2000-206F; }
@font-face { font-family: "Unbounded"; font-weight: 700; font-display: swap; src: url(fonts/unbounded-cyrillic-700-normal.woff2) format("woff2"); unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }
@font-face { font-family: "Manrope"; font-weight: 400; font-display: swap; src: url(fonts/manrope-latin-400-normal.woff2) format("woff2"); unicode-range: U+0000-00FF, U+2000-206F; }
@font-face { font-family: "Manrope"; font-weight: 400; font-display: swap; src: url(fonts/manrope-cyrillic-400-normal.woff2) format("woff2"); unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }
@font-face { font-family: "Manrope"; font-weight: 600; font-display: swap; src: url(fonts/manrope-latin-600-normal.woff2) format("woff2"); unicode-range: U+0000-00FF, U+2000-206F; }
@font-face { font-family: "Manrope"; font-weight: 600; font-display: swap; src: url(fonts/manrope-cyrillic-600-normal.woff2) format("woff2"); unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }
@font-face { font-family: "Manrope"; font-weight: 800; font-display: swap; src: url(fonts/manrope-latin-800-normal.woff2) format("woff2"); unicode-range: U+0000-00FF, U+2000-206F; }
@font-face { font-family: "Manrope"; font-weight: 800; font-display: swap; src: url(fonts/manrope-cyrillic-800-normal.woff2) format("woff2"); unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }
@font-face { font-family: "JetBrains Mono"; font-weight: 400; font-display: swap; src: url(fonts/jetbrains-mono-latin-400-normal.woff2) format("woff2"); unicode-range: U+0000-00FF, U+2000-206F; }
@font-face { font-family: "JetBrains Mono"; font-weight: 400; font-display: swap; src: url(fonts/jetbrains-mono-cyrillic-400-normal.woff2) format("woff2"); unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }
@font-face { font-family: "JetBrains Mono"; font-weight: 700; font-display: swap; src: url(fonts/jetbrains-mono-latin-700-normal.woff2) format("woff2"); unicode-range: U+0000-00FF, U+2000-206F; }
@font-face { font-family: "JetBrains Mono"; font-weight: 700; font-display: swap; src: url(fonts/jetbrains-mono-cyrillic-700-normal.woff2) format("woff2"); unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }

/* ===== Токены ===== */
:root {
  --font-display: "Unbounded", "Arial Black", sans-serif;
  --font-body: "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --maxw: 1180px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 14px;

  /* светлая — «лабораторный журнал» */
  --bg: #f2ecdf;
  --bg-grid: rgba(120, 90, 40, .09);
  --surface: #fbf8f1;
  --surface-2: #ece4d3;
  --ink: #1c1814;
  --muted: #5d5547;
  --line: #d6ccb8;
  --accent: #b9400b;
  --accent-ink: #fff8ef;
  --alpha: #b3261e;
  --beta: #0f6e63;
  --sg: #9a6b00;
  --shadow: 0 1px 0 rgba(0,0,0,.04), 0 12px 30px -18px rgba(60,40,10,.45);
  --hero-ink: #1c1814;
  --hero-bg: #e9e0cc;
  --city: #2a241c;
  --city-win: #e98a3a;
  --gear: rgba(120, 80, 30, .16);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c0b09; --bg-grid: rgba(255, 170, 80, .035);
    --surface: #15130f; --surface-2: #1e1b16;
    --ink: #ede5d5; --muted: #a89e8b; --line: #2f2a22;
    --accent: #ff8a2a; --accent-ink: #1a0f04;
    --alpha: #ff6b5e; --beta: #4fd1b5; --sg: #ffc34d;
    --shadow: 0 1px 0 rgba(255,255,255,.03), 0 18px 40px -20px rgba(0,0,0,.8);
    --hero-ink: #ede5d5; --hero-bg: #0c0b09;
    --city: #050504; --city-win: #ff9a3c; --gear: rgba(255, 138, 42, .09);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0c0b09; --bg-grid: rgba(255, 170, 80, .035);
  --surface: #15130f; --surface-2: #1e1b16;
  --ink: #ede5d5; --muted: #a89e8b; --line: #2f2a22;
  --accent: #ff8a2a; --accent-ink: #1a0f04;
  --alpha: #ff6b5e; --beta: #4fd1b5; --sg: #ffc34d;
  --shadow: 0 1px 0 rgba(255,255,255,.03), 0 18px 40px -20px rgba(0,0,0,.8);
  --hero-ink: #ede5d5; --hero-bg: #0c0b09;
  --city: #050504; --city-win: #ff9a3c; --gear: rgba(255, 138, 42, .09);
  color-scheme: dark;
}

/* ===== База ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--ink);
  font: 400 17px/1.65 var(--font-body);
  overflow-x: hidden;
}
h1, h2, h3 { line-height: 1.15; margin: 0; }
p { margin: 0 0 1em; }
a { color: var(--accent); text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.skip { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--accent); color: var(--accent-ink); padding: 8px 14px; border-radius: 8px; }
.skip:focus { left: 8px; }

/* ===== Верхняя панель ===== */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 16px;
  padding: 10px var(--gutter);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 700 13px/1 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; white-space: nowrap; }
.brand-mark { width: 28px; height: 28px; fill: var(--accent); }
.nav { margin-left: auto; overflow-x: auto; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav ul { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav a { display: block; padding: 8px 12px; border-radius: 999px; color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 600; white-space: nowrap; }
.nav a:hover, .nav a.active { color: var(--ink); background: var(--surface-2); }
.theme-toggle {
  flex: none; width: 40px; height: 40px; border-radius: 50%;
  display: grid; place-items: center;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink); cursor: pointer;
}
.theme-toggle svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.theme-toggle .moon { display: none; }
:root[data-theme="dark"] .theme-toggle .sun { display: none; }
:root[data-theme="dark"] .theme-toggle .moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .sun { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .moon { display: block; }
}
@media (max-width: 860px) {
  .topbar { flex-wrap: wrap; row-gap: 6px; padding-top: 8px; padding-bottom: 6px; }
  .brand { order: 1; }
  .theme-toggle { order: 2; margin-left: auto; width: 36px; height: 36px; }
  .nav { order: 3; flex-basis: 100%; margin: 0 calc(-1 * var(--gutter)); padding: 0 var(--gutter); }
  .nav { -webkit-mask-image: linear-gradient(90deg, #000 85%, transparent); mask-image: linear-gradient(90deg, #000 85%, transparent); }
  .nav a { padding: 6px 10px; font-size: 13px; }
  html { scroll-padding-top: 104px; }
}

/* ===== Hero ===== */
.hero {
  position: relative; isolation: isolate; overflow: hidden;
  min-height: min(100svh, 980px);
  display: grid; align-items: center;
  --city-h: clamp(110px, 20vh, 220px);
  padding: clamp(40px, 8vh, 96px) var(--gutter) calc(var(--city-h) + 24px);
  background: var(--hero-bg);
  color: var(--hero-ink);
  border-bottom: 1px solid var(--line);
}
.hero-bg { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.gears { position: absolute; width: min(78vw, 820px); right: -14%; top: -12%; fill: var(--gear); }
.gears .dial, .gears .ticks line, .gears .hand { fill: none; stroke: var(--gear); stroke-width: 3; }
.gears .hand { stroke-width: 6; stroke-linecap: round; transform-origin: 220px 240px; }
.gear { transform-box: fill-box; transform-origin: center; }
.g1 { animation: spin 90s linear infinite; }
.g2 { animation: spin 54s linear infinite reverse; }
.g3 { animation: spin 32s linear infinite; }
.h1 { animation: spin 120s linear infinite; }
.h2 { animation: spin 20s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.skyline { position: absolute; left: 0; right: 0; bottom: 0; width: 100%; height: var(--city-h); }
.skyline .blds rect, .radiokaikan rect:not(.sign) { fill: var(--city); }
.skyline .wins rect { fill: var(--city-win); opacity: .35; }
.skyline .sign { opacity: .85; }
.skyline .s0 { fill: var(--accent); }
.skyline .s1 { fill: var(--beta); }
.skyline .s2 { fill: var(--alpha); }
.radiokaikan .sat { fill: var(--city); stroke: var(--accent); stroke-width: 2; }
.scan {
  position: absolute; inset: 0;
  background: repeating-linear-gradient(0deg, rgba(0,0,0,.05) 0 1px, transparent 1px 3px);
  mix-blend-mode: multiply;
}
.hero-inner { position: relative; max-width: var(--maxw); width: 100%; margin: 0 auto; }
.kicker { font: 400 13px/1 var(--font-mono); letter-spacing: .3em; text-transform: uppercase; color: var(--accent); margin-bottom: 18px; }

/* Дивергенс-метр: прибор тёмный в обеих темах — это «железо» */
.meter {
  display: inline-block;
  padding: clamp(12px, 2vw, 20px);
  background: linear-gradient(180deg, #2a241d, #120f0b);
  border-radius: 18px;
  border: 1px solid #3c3328;
  box-shadow: 0 30px 60px -30px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.08), 0 0 0 6px rgba(0,0,0,.25);
  max-width: 100%;
}
.tubes { --w: clamp(30px, 8.4vw, 72px); display: flex; justify-content: center; gap: clamp(4px, 1vw, 10px); }
.tubes > .tube {
  position: relative;
  width: var(--w); height: calc(var(--w) * 1.7);
  display: grid; place-items: center;
  border-radius: calc(var(--w) / 2) calc(var(--w) / 2) 8px 8px;
  background:
    repeating-linear-gradient(90deg, rgba(255,180,90,.06) 0 1px, transparent 1px 5px),
    repeating-linear-gradient(0deg, rgba(255,180,90,.06) 0 1px, transparent 1px 5px),
    radial-gradient(ellipse at 50% 35%, rgba(255,120,30,.22), rgba(20,12,6,.95) 70%);
  border: 1px solid rgba(255,200,140,.18);
  box-shadow: inset 0 0 18px rgba(0,0,0,.8), inset 6px 0 10px -6px rgba(255,255,255,.18);
  font: 400 calc(var(--w) * 1.05)/1 var(--font-mono);
  color: #ffb466;
  text-shadow: 0 0 4px #ff8a2a, 0 0 14px #ff6a00, 0 0 34px rgba(255,90,0,.7);
  overflow: hidden;
}
.tubes > .tube.dot { width: calc(var(--w) * .42); place-items: end center; padding-bottom: calc(var(--w) * .18); border-radius: calc(var(--w) * .21) calc(var(--w) * .21) 6px 6px; }
.tubes > .tube.flicker { color: #ffd2a0; text-shadow: 0 0 6px #ffb466, 0 0 24px #ff6a00; }
.meter-caption { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 16px; margin: 12px 2px 0; font: 400 12px/1.3 var(--font-mono); color: #c9b79c; letter-spacing: .08em; text-transform: uppercase; }
.meter-label { color: #ffb466; }
.meter-btn {
  font: inherit; color: #1a0f04; background: #ff8a2a; border: 0; border-radius: 999px;
  padding: 8px 14px; cursor: pointer; letter-spacing: .06em;
}
.meter-btn:hover { background: #ffa14f; }
.meter-btn:focus-visible { outline-color: #ffd2a0; }

.hero-title {
  font: 700 clamp(44px, 10.5vw, 132px)/.95 var(--font-display);
  letter-spacing: -.03em;
  margin: clamp(24px, 4vh, 40px) 0 18px;
}
.semi { color: var(--accent); display: inline-block; transform: translateY(-.04em); }
.lead { max-width: 60ch; font-size: clamp(17px, 1.6vw, 20px); color: color-mix(in srgb, var(--hero-ink) 82%, transparent); }
.hero-quote { margin: 20px 0 30px; padding-left: 16px; border-left: 3px solid var(--accent); }
.hero-quote p { margin: 0; font: 400 clamp(16px, 1.6vw, 19px)/1.4 var(--font-mono); }
.cta {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px; border-radius: 999px;
  background: var(--accent); color: var(--accent-ink);
  font-weight: 800; text-decoration: none;
  box-shadow: 0 10px 30px -12px var(--accent);
  transition: transform .2s ease;
}
.cta:hover { transform: translateY(-2px); }

/* ===== Секции ===== */
.section { max-width: var(--maxw); margin: 0 auto; padding: clamp(64px, 10vw, 120px) var(--gutter) 0; }
.section-head { display: grid; grid-template-columns: auto 1fr; column-gap: 20px; align-items: end; margin-bottom: clamp(28px, 4vw, 48px); }
.section-num {
  grid-row: span 2; margin: 0; font: 700 clamp(48px, 8vw, 96px)/.8 var(--font-display);
  /* градиентная заливка: контур (text-stroke) рисовал лишние линии на перекрытиях глифов */
  background: linear-gradient(180deg, var(--accent) 20%, color-mix(in srgb, var(--accent) 12%, transparent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  padding-bottom: .06em;
}
.section-head h2 { font: 700 clamp(28px, 4.4vw, 52px)/1.05 var(--font-display); letter-spacing: -.02em; }
.section-intro { grid-column: 2; margin: 10px 0 0; max-width: 62ch; color: var(--muted); }
@media (max-width: 560px) {
  .section-head { grid-template-columns: 1fr; }
  .section-num { grid-row: auto; margin-bottom: 8px; }
  .section-intro { grid-column: 1; }
}

/* О произведении */
.about-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: clamp(24px, 5vw, 64px); align-items: start; }
.big { font-size: clamp(19px, 2vw, 23px); line-height: 1.55; }
.points { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.points li { position: relative; padding-left: 30px; color: var(--muted); }
.points li::before { content: ""; position: absolute; left: 0; top: .55em; width: 14px; height: 14px; border: 2px solid var(--accent); border-radius: 50%; box-shadow: inset 0 0 0 3px var(--bg), inset 0 0 0 7px var(--accent); }
.facts { margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.fact { padding: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.fact dt { font: 400 12px/1.2 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.fact dd { margin: 8px 0 0; }
.fact-val { display: block; font: 700 clamp(24px, 3vw, 32px)/1.1 var(--font-display); color: var(--accent); }
.fact-note { display: block; margin-top: 6px; font-size: 14px; line-height: 1.45; color: var(--muted); }
@media (max-width: 860px) { .about-grid { grid-template-columns: 1fr; } }
@media (max-width: 380px) { .facts { grid-template-columns: 1fr; } }

/* Лаборатория */
.members { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; }
.member {
  position: relative; padding: 22px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow);
  transition: translate .25s ease, border-color .25s ease;
}
.member:hover { translate: 0 -4px; border-color: var(--accent); }
.member-top { display: flex; justify-content: space-between; align-items: start; margin-bottom: 18px; }
.labmem { font: 400 12px/1 var(--font-mono); letter-spacing: .14em; color: var(--muted); }
.labmem b { display: block; margin-top: 6px; font: 700 34px/1 var(--font-display); color: var(--accent); letter-spacing: 0; }
.icon { width: 52px; height: 52px; color: var(--ink); opacity: .85; }
.member h3 { font: 700 18px/1.25 var(--font-display); }
.alias { margin: 4px 0 12px; font: 400 14px/1.3 var(--font-mono); color: var(--accent); }
.member p:last-child { margin: 0; font-size: 15px; color: var(--muted); }

/* Гаджеты */
.gadget-list { display: grid; gap: clamp(20px, 3vw, 28px); }
.gadget {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); align-items: center;
  gap: clamp(20px, 4vw, 48px);
  padding: clamp(18px, 3vw, 28px);
  background: var(--surface); border: 1px solid var(--line); border-radius: calc(var(--radius) + 6px); box-shadow: var(--shadow);
}
.gadget.flip .gadget-figure { order: 2; }
.gadget-figure { background: var(--surface-2); border-radius: var(--radius); padding: 12px; }
.gadget-art { display: block; width: 100%; height: auto; max-height: 220px; }
.gadget-art .body { fill: var(--surface); stroke: var(--ink); stroke-width: 2.5; }
.gadget-art .glass { fill: color-mix(in srgb, var(--ink) 14%, var(--surface-2)); stroke: var(--ink); stroke-width: 2; }
.gadget-art .panel, .gadget-art .plate { fill: var(--surface-2); stroke: var(--ink); stroke-width: 2; }
.gadget-art .stroke, .gadget-art .cable, .gadget-art .dash, .gadget-art .ring { fill: none; stroke: var(--ink); stroke-width: 2.5; stroke-linecap: round; }
.gadget-art .ring { fill: var(--surface); }
.gadget-art .accent { stroke: var(--accent); }
.gadget-art .cable { stroke-dasharray: 2 6; }
.gadget-art .dash { stroke-dasharray: 10 8; opacity: .5; }
.gadget-art .gel { fill: #4fbf5a; stroke: var(--ink); stroke-width: 2; }
.gadget-art .led { fill: var(--accent); }
.gadget-art .led.off { fill: var(--line); }
.gadget-art .mono { font: 700 15px var(--font-mono); fill: var(--accent); }
.gadget-art .small { font-size: 11px; fill: var(--muted); }
.gadget-art .tube { fill: #1a120a; stroke: #6b5235; stroke-width: 1.5; }
.gadget-art .nixie { font: 400 28px var(--font-mono); fill: #ffb466; text-anchor: middle; filter: drop-shadow(0 0 4px #ff6a00); }
.gadget-sub { margin: 0 0 6px; font: 400 12px/1.3 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--accent); }
.gadget h3 { font: 700 clamp(20px, 2.4vw, 28px)/1.15 var(--font-display); margin-bottom: 12px; }
.gadget-body p:last-child { margin: 0; color: var(--muted); }
@media (max-width: 720px) {
  .gadget { grid-template-columns: 1fr; }
  .gadget.flip .gadget-figure { order: 0; }
}

.terms { margin-top: clamp(40px, 6vw, 72px); padding: clamp(20px, 4vw, 36px); border-radius: calc(var(--radius) + 6px); background: #120f0b; color: #e8dcc6; border: 1px solid #3c3328; }
.terms-title { font: 400 14px/1 var(--font-mono); letter-spacing: .2em; text-transform: uppercase; color: #ffb466; margin-bottom: 20px; }
.terms-title::before { content: "> "; }
.terms dl { margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px 32px; }
.term { padding-top: 14px; border-top: 1px dashed #3c3328; }
.term dt { font: 700 15px/1.3 var(--font-mono); color: #ffb466; }
.term dd { margin: 6px 0 0; font-size: 15px; color: #c9bba3; }
@media (max-width: 400px) { .terms dl { grid-template-columns: 1fr; } }

/* Мировые линии */
.fields { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 18px; }
.field { padding: 18px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); border-top: 4px solid var(--c); }
.field.alpha { --c: var(--alpha); } .field.beta { --c: var(--beta); } .field.sg { --c: var(--sg); }
.field-range { margin: 0 0 4px; font: 700 13px/1 var(--font-mono); color: var(--c); }
.field h3 { font: 700 18px/1.2 var(--font-display); margin-bottom: 8px; }
.field p:last-child { margin: 0; font-size: 15px; color: var(--muted); }
@media (max-width: 760px) { .fields { grid-template-columns: 1fr; } }
.wl-box { padding: clamp(14px, 3vw, 28px); border-radius: calc(var(--radius) + 6px); background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); }
.wl-chart { display: block; width: 100%; height: auto; }
.wl-chart.narrow { display: none; }
@media (max-width: 640px) { .wl-chart.wide { display: none; } .wl-chart.narrow { display: block; } }
.wl-chart .band { opacity: .12; }
.wl-chart .band.alpha { fill: var(--alpha); } .wl-chart .band.beta { fill: var(--beta); }
.wl-chart .band-label { font: 700 14px var(--font-display); }
.wl-chart .band-label.alpha { fill: var(--alpha); } .wl-chart .band-label.beta { fill: var(--beta); }
.wl-chart .axis, .wl-chart .tick { stroke: var(--muted); stroke-width: 1.5; }
.wl-chart .axis-label { font: 400 12px var(--font-mono); fill: var(--muted); }
.wl-chart .sg-line { stroke: var(--sg); stroke-width: 1.5; stroke-dasharray: 4 5; }
.wl-chart .route { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-dasharray: 7 6; stroke-linejoin: round; animation: dash 30s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -400; } }
.wl-point { cursor: pointer; outline: none; }
.wl-point .dot { fill: var(--surface); stroke: var(--pc); stroke-width: 3.5; transition: r .2s; }
.wl-point .halo { fill: var(--pc); opacity: 0; transition: opacity .2s; }
.wl-point.alpha { --pc: var(--alpha); } .wl-point.beta { --pc: var(--beta); } .wl-point.sg { --pc: var(--sg); }
.wl-point .pt-num { font: 700 13px var(--font-mono); fill: var(--ink); paint-order: stroke; stroke: var(--surface); stroke-width: 4px; }
.wl-point:hover .halo, .wl-point:focus-visible .halo, .wl-point.on .halo { opacity: .25; }
.wl-point.on .dot { fill: var(--pc); }
.spoiler-bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 20px; margin: 14px 0; padding: 12px 16px; border-radius: 12px; background: var(--surface-2); }
.spoiler-bar p { margin: 0; font-size: 14px; color: var(--muted); }
.switch { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; cursor: pointer; white-space: nowrap; }
.switch input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.switch-ui { width: 44px; height: 24px; border-radius: 999px; background: var(--line); position: relative; transition: background .2s; }
.switch-ui::after { content: ""; position: absolute; top: 3px; left: 3px; width: 18px; height: 18px; border-radius: 50%; background: var(--surface); box-shadow: 0 1px 3px rgba(0,0,0,.3); transition: transform .2s; }
.switch input:checked + .switch-ui { background: var(--accent); }
.switch input:checked + .switch-ui::after { transform: translateX(20px); }
.switch input:focus-visible + .switch-ui { outline: 2px solid var(--accent); outline-offset: 3px; }
.wl-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.wl-step { display: grid; grid-template-columns: 100px 1fr; gap: 2px 16px; padding: 12px 14px; border-radius: 12px; border-left: 4px solid var(--pc); background: color-mix(in srgb, var(--pc) 7%, transparent); transition: background .2s; }
.wl-step.alpha { --pc: var(--alpha); } .wl-step.beta { --pc: var(--beta); } .wl-step.sg { --pc: var(--sg); }
.wl-step.on { background: color-mix(in srgb, var(--pc) 18%, transparent); }
.wl-val { font: 700 15px/1.5 var(--font-mono); color: var(--pc); grid-row: span 2; }
.wl-label { font-weight: 700; }
.wl-spoiler { grid-column: 2; font-size: 15px; color: var(--muted); filter: blur(6px); user-select: none; transition: filter .3s; }
/* :has — работает и без JS */
.worldlines:has(#spoilers:checked) .wl-spoiler { filter: none; user-select: auto; }
@media (max-width: 480px) { .wl-step { grid-template-columns: 1fr; } .wl-val { grid-row: auto; } .wl-spoiler { grid-column: 1; } }

/* С чего начать */
.steps { list-style: none; counter-reset: s; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.steps li { counter-increment: s; position: relative; padding: 52px 18px 18px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); }
.steps li::before { content: counter(s, decimal-leading-zero); position: absolute; top: 16px; left: 18px; font: 700 22px/1 var(--font-display); color: var(--accent); }
.steps li:not(:last-child)::after { content: ""; position: absolute; top: 27px; left: 64px; right: -14px; height: 2px; background: repeating-linear-gradient(90deg, var(--accent) 0 6px, transparent 6px 11px); opacity: .5; }
.steps h3 { font: 700 16px/1.3 var(--font-body); margin-bottom: 6px; }
.steps p { margin: 0; font-size: 14px; color: var(--muted); }
.vn-note { margin: 22px 0 0; padding: 16px 20px; border-radius: var(--radius); border: 1px dashed var(--accent); color: var(--muted); }
@media (max-width: 1000px) { .steps { grid-template-columns: 1fr 1fr; } .steps li::after { display: none; } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }

/* Подвал */
.footer { margin-top: clamp(72px, 10vw, 120px); padding: 40px var(--gutter); border-top: 1px solid var(--line); text-align: center; background: var(--surface); }
.motto { font: 700 clamp(22px, 3vw, 30px)/1.2 var(--font-display); color: var(--accent); margin-bottom: 10px; }
.foot-note { margin: 0 auto; max-width: 70ch; font-size: 14px; color: var(--muted); }

/* 404 */
.p404 main { min-height: 100svh; display: grid; place-content: center; justify-items: start; gap: 20px; padding: var(--gutter); }
.p404 h1 { font: 700 clamp(24px, 4vw, 40px)/1.15 var(--font-display); }

/* Появление при прокрутке (только если JS включён) */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease, translate .25s ease, border-color .25s ease; }
.js .reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; }
}

/* Узкая карта мировых линий: подписи крупнее (viewBox уже, масштаб меньше) */
.wl-chart.narrow .pt-num { font-size: 15px; }
.wl-chart.narrow .axis-label { font-size: 13px; }
.wl-chart.narrow .band-label { font-size: 15px; }