/* Tolk — сайт. Инженерный стиль: окно Tolk «в разборе» с пунктирными выносками, узкий гротеск (Roboto Condensed),
   подписи капсом (Geist Mono), блоки 01 / 02 / 03 с уголками-скобками, точечные схемы. Цвета свои: бумага и золото, тёмная тема.
   Движение — своё (site.js, без библиотек): 3D-окно крутится мышью/пальцем, слова заголовков выезжают, панели подсвечиваются
   под курсором; «Меньше движения» в системе выключает только то, что движется само (парение окна, бегущие точки). */

:root {
  --bg: #f2eee6; --bg-2: #ebe6db; --ink: #15130f; --ink-2: rgba(21, 19, 15, .7); --ink-3: rgba(21, 19, 15, .46);
  --line: rgba(21, 19, 15, .14); --dot: rgba(21, 19, 15, .13); --accent: #93652a; --on-accent: #fbf8f2; --hot: #b4541c; --ok: #3d7a4c;
  --shot-edge: rgba(21, 19, 15, .24); --shot-shadow: 0 2px 6px rgba(40, 28, 10, .07), 0 34px 70px -26px rgba(40, 28, 10, .5);
  --display: "Roboto Condensed", "Arial Narrow", "Segoe UI", system-ui, sans-serif;
  --sans: "Geist", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "Geist Mono", "Cascadia Mono", Consolas, monospace;
  --gutter: clamp(16px, 4.4vw, 5.5rem);
  --ease: cubic-bezier(.16, 1, .3, 1);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #070808; --bg-2: #0d0e0f; --ink: #f4f1ea; --ink-2: rgba(244, 241, 234, .68); --ink-3: rgba(244, 241, 234, .42);
    --line: rgba(244, 241, 234, .14); --dot: rgba(244, 241, 234, .1); --accent: #e3bd76; --on-accent: #0b0906; --hot: #f4a06c; --ok: #86c695;
    --shot-edge: rgba(244, 241, 234, .3); --shot-shadow: 0 0 60px -18px color-mix(in srgb, #e3bd76 28%, transparent), 0 30px 70px -30px rgba(0, 0, 0, .9);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #070808; --bg-2: #0d0e0f; --ink: #f4f1ea; --ink-2: rgba(244, 241, 234, .68); --ink-3: rgba(244, 241, 234, .42);
  --line: rgba(244, 241, 234, .14); --dot: rgba(244, 241, 234, .1); --accent: #e3bd76; --on-accent: #0b0906; --hot: #f4a06c; --ok: #86c695;
  --shot-edge: rgba(244, 241, 234, .3); --shot-shadow: 0 0 60px -18px color-mix(in srgb, #e3bd76 28%, transparent), 0 30px 70px -30px rgba(0, 0, 0, .9);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
body {
  margin: 0; background: var(--bg); color: var(--ink); font: 400 16px/1.6 var(--sans); letter-spacing: -.003em;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; overflow-x: clip;
}
html.theming, html.theming * { transition: background-color .6s var(--ease), color .6s var(--ease), border-color .6s var(--ease) !important; }
::selection { background: var(--accent); color: var(--on-accent); }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
h1, h2, h3, p, dl, dd, figure, ol, ul { margin: 0; }
ol, ul { padding: 0; list-style: none; }
img { display: block; max-width: 100%; }
[hidden] { display: none !important; }

/* точечная сетка — как миллиметровка под чертежом */
.dots { position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image: radial-gradient(circle at 1px 1px, var(--dot) 1px, transparent 1.4px); background-size: 24px 24px;
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 85%); mask-image: radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 85%); }

/* уголки-скобки: .pins на любом блоке */
.pins { position: relative; }
.pins::before { content: ""; position: absolute; inset: -1px; pointer-events: none; --l: 11px; --t: 1px; --c: var(--ink-3);
  background:
    linear-gradient(var(--c), var(--c)) top left / var(--l) var(--t), linear-gradient(var(--c), var(--c)) top left / var(--t) var(--l),
    linear-gradient(var(--c), var(--c)) top right / var(--l) var(--t), linear-gradient(var(--c), var(--c)) top right / var(--t) var(--l),
    linear-gradient(var(--c), var(--c)) bottom left / var(--l) var(--t), linear-gradient(var(--c), var(--c)) bottom left / var(--t) var(--l),
    linear-gradient(var(--c), var(--c)) bottom right / var(--l) var(--t), linear-gradient(var(--c), var(--c)) bottom right / var(--t) var(--l);
  background-repeat: no-repeat; }
.pins.gold::before { --c: var(--accent); }

/* ---------------------------------------------------------------- рамка */
.chrome { position: fixed; z-index: 20; }
.nav { top: 0; left: 0; right: 0; display: flex; align-items: center; gap: clamp(.7rem, 2vw, 1.6rem); padding: clamp(.9rem, 2vw, 1.5rem) var(--gutter); }
.nav::before { content: ""; position: absolute; inset: 0 0 -1.8rem; z-index: -1; pointer-events: none; opacity: 0; transition: opacity .6s var(--ease);
  background: linear-gradient(to bottom, var(--bg) 40%, color-mix(in srgb, var(--bg) 0%, transparent)); }
.nav.scrolled::before { opacity: 1; }
.brand { display: inline-flex; align-items: center; gap: .55rem; font: 600 1.35rem/1 var(--display); letter-spacing: -.01em; margin-right: auto; }
.brand .tmark { width: 26px; height: 26px; flex: none; display: block; }
.mark { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); flex: none; }
.nav-links { display: flex; gap: 1.3rem; margin-right: .6rem; }
.nav-links a { font: 400 .64rem/1 var(--mono); letter-spacing: .2em; text-transform: uppercase; color: var(--ink-3); transition: color .3s; }
.nav-links a:hover { color: var(--ink); }
.langs { display: flex; gap: .15rem; }
.langs button { border: 0; background: none; padding: .45rem .32rem; cursor: pointer; font: 400 .64rem/1 var(--mono); letter-spacing: .18em;
  text-transform: uppercase; color: var(--ink-3); transition: color .3s; }
.langs button:hover, .langs button[aria-pressed="true"] { color: var(--ink); }
.theme-btn { width: 2.1rem; height: 2.1rem; border-radius: 50%; border: 1px solid var(--line); background: none; cursor: pointer; display: grid; place-items: center;
  color: var(--ink-2); transition: border-color .4s var(--ease), color .4s var(--ease); flex: none; }
.theme-btn:hover { border-color: var(--ink-3); color: var(--ink); }
.theme-btn svg { width: 15px; height: 15px; }
.theme-btn .moon { display: none; }
:root[data-theme="dark"] .theme-btn .sun { display: none; }
:root[data-theme="dark"] .theme-btn .moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-btn .sun { display: none; }
  :root:not([data-theme="light"]) .theme-btn .moon { display: block; }
}
.pill { display: inline-flex; align-items: center; height: 2.1rem; padding: 0 1rem; border: 1px solid var(--ink); background: var(--ink); color: var(--bg);
  font: 500 .64rem/1 var(--mono); letter-spacing: .18em; text-transform: uppercase; transform: translate(var(--tx, 0), var(--ty, 0));
  transition: background .4s var(--ease), color .4s var(--ease), transform .5s var(--ease); }
.pill:hover { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.progress { top: 0; left: 0; right: 0; height: 1px; background: transparent; z-index: 21; }
.progress i { display: block; height: 100%; width: 100%; transform-origin: left; transform: scaleX(0); background: var(--accent); }

/* ---------------------------------------------------------------- текст */
.eyebrow { display: flex; align-items: center; gap: .7rem; font: 400 .66rem/1.4 var(--mono); letter-spacing: .26em; text-transform: uppercase; color: var(--ink-2); }
.eyebrow .mark { width: 6px; height: 6px; }
.num { font: 400 .66rem/1 var(--mono); letter-spacing: .2em; color: var(--accent); }
.display { font-family: var(--display); font-weight: 620; line-height: .92; letter-spacing: -.012em;
  font-size: clamp(2.6rem, 5.6vw, 5.6rem); text-wrap: balance; }
.display em { font-style: normal; color: var(--accent); }
.lede { max-width: 33rem; font-size: clamp(1rem, 1.15vw, 1.14rem); line-height: 1.6; color: var(--ink-2); text-wrap: pretty; }
.body { max-width: 31rem; font-size: clamp(.97rem, 1vw, 1.05rem); line-height: 1.65; color: var(--ink-2); text-wrap: pretty; }
.note { font: 400 .64rem/1.6 var(--mono); letter-spacing: .06em; color: var(--ink-3); }
.link { background: linear-gradient(currentColor, currentColor) 0 100% / 100% 1px no-repeat; padding-bottom: 1px; transition: background-size .5s var(--ease), color .3s; }
.link:hover { background-size: 0 1px; background-position: 100% 100%; color: var(--accent); }

.btn { display: inline-flex; align-items: center; gap: .7rem; height: 3.2rem; padding: 0 1.45rem; background: var(--ink); color: var(--bg);
  font: 500 .95rem/1 var(--sans); white-space: nowrap; transform: translate(var(--tx, 0), var(--ty, 0));
  transition: background .5s var(--ease), color .5s var(--ease), transform .5s var(--ease); }
.btn svg { width: 17px; height: 17px; flex: none; }
.btn:hover { background: var(--accent); color: var(--on-accent); }
.btn:active { transform: translate(var(--tx, 0), var(--ty, 0)) scale(.98); }
.ghost { display: inline-flex; align-items: center; gap: .55rem; height: 3.2rem; font: 500 .95rem/1 var(--sans); position: relative; }
.ghost::after { content: ""; position: absolute; left: 0; right: 1.5rem; bottom: .85rem; height: 1px; background: currentColor; opacity: .35; transform-origin: right;
  transition: transform .6s var(--ease), opacity .4s; }
.ghost:hover::after { transform: scaleX(0); }
.ghost svg { width: 16px; height: 16px; transition: transform .6s var(--ease); }
.ghost:hover svg { transform: translateX(5px); }
.ctas { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem 1.7rem; }
.fine { font: 400 .64rem/1.5 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); }
.os-hint { max-width: 33rem; font-size: .8rem; line-height: 1.5; color: var(--ink-3); }
.os-alt { margin-top: .7rem; font-size: .8rem; color: var(--ink-3); }
.os-alt .link { margin: 0 .15rem; }

main { position: relative; z-index: 1; }
.wrap { width: min(80rem, 100% - 2 * var(--gutter)); margin: 0 auto; }

/* ---------------------------------------------------------------- первый экран: окно Tolk «в разборе» */
.hero { position: relative; min-height: 100svh; padding: clamp(6.5rem, 15vh, 9rem) 0 clamp(3rem, 8vh, 5rem); display: flex; align-items: center; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: clamp(1.5rem, 4vw, 4rem); align-items: center; }
.hero-copy { display: grid; gap: clamp(1.1rem, 2.4vh, 1.6rem); align-content: center; }
.hero .display { font-size: clamp(3.1rem, 6.9vw, 7.4rem); line-height: .88; letter-spacing: -.018em; }
.hero .ctas { margin-top: .4rem; }

.xray { position: relative; aspect-ratio: 1.18; width: 100%; }
.xray .stage { position: absolute; inset: 0; perspective: 2600px; perspective-origin: 50% 40%; cursor: grab; touch-action: pan-y; user-select: none; -webkit-user-select: none; }
.xray .stage.grabbing { cursor: grabbing; }
.xray .stack { position: absolute; left: 50%; top: 50%; width: 640px; height: 406px; margin: -203px 0 0 -320px;
  transform-style: preserve-3d; transform-origin: 50% 50%; will-change: transform; }
.xray .layer { position: absolute; transform-style: preserve-3d; will-change: transform; transition: filter .5s var(--ease), opacity .5s var(--ease); }
.xray[data-focus] .layer { opacity: .38; filter: saturate(.6); }
.xray[data-focus="sub"] .l-sub, .xray[data-focus="win"] .l-win, .xray[data-focus="notes"] .l-notes { opacity: 1; filter: none; }
.xray .layer img { width: 100%; height: 100%; object-fit: cover; border-radius: 9px; box-shadow: 0 0 0 1px var(--shot-edge), var(--shot-shadow); user-select: none; -webkit-user-drag: none; }
.xray .l-win { left: 0; top: 0; width: 640px; height: 406px; }
.xray .l-notes { left: 130px; top: 60px; width: 500px; height: 337px; }
.xray .l-notes img { border-radius: 12px; }
.xray .l-sub { left: 40px; top: 20px; width: 560px; height: 53px; }
.xray .l-sub img { object-fit: contain; border-radius: 0; box-shadow: none; filter: drop-shadow(0 18px 24px rgba(0, 0, 0, .35)); }
.xray .c, .xray .fp i { position: absolute; width: 0; height: 0; }
.xray .c.tl { left: 0; top: 0; } .xray .c.tr { right: 0; top: 0; } .xray .c.bl { left: 0; bottom: 0; } .xray .c.br { right: 0; bottom: 0; }
.xray .c.mr { right: 0; top: 50%; } .xray .c.ml { left: 0; top: 50%; }
/* след верхнего слоя на нижнем: пунктирная рамка, к ней тянутся выноски */
.xray .fp { position: absolute; border: 1.5px dotted color-mix(in srgb, var(--accent) 80%, transparent); border-radius: 6px; opacity: var(--fp, 1); pointer-events: none; }
.xray .tag { position: absolute; top: -26px; left: 0; font: 500 11px/1 var(--mono); letter-spacing: .18em; color: var(--accent); white-space: nowrap; opacity: var(--fp, 1); }
.xray .wires { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; }
.xray .wires path { fill: none; stroke: var(--accent); stroke-width: 1.4; stroke-linecap: round; stroke-dasharray: 0 5.5; }
.xray .wires path.lead { stroke: var(--ink-3); stroke-dasharray: 0 4.5; }
.xray .wires circle { fill: var(--bg); stroke: var(--accent); stroke-width: 1.3; }
.callouts { position: absolute; right: 0; top: 0; display: grid; gap: .7rem; width: min(14rem, 34%); opacity: var(--co, 1); transition: opacity .3s; }
.callouts li { display: block; }
.callouts button { display: grid; grid-template-columns: auto 1fr; column-gap: .7rem; align-items: baseline; width: 100%; padding: .65rem .8rem .7rem; text-align: left;
  border: 1px solid transparent; background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  cursor: pointer; transition: border-color .4s var(--ease), background .4s var(--ease); }
.callouts button:hover, .callouts li.on button { border-color: color-mix(in srgb, var(--accent) 55%, transparent); background: color-mix(in srgb, var(--bg-2) 92%, transparent); }
.callouts .n { grid-row: span 2; font: 500 .62rem/1.5 var(--mono); letter-spacing: .14em; color: var(--accent); }
.callouts b { font: 600 1.05rem/1.1 var(--display); letter-spacing: .01em; }
.callouts span:last-child { font-size: .8rem; line-height: 1.4; color: var(--ink-2); }
.xray figcaption { position: absolute; left: 0; bottom: -.4rem; }
.x-ctl { position: absolute; right: 0; bottom: -.9rem; display: flex; align-items: center; gap: 1rem; }
.x-toggle { display: inline-flex; align-items: center; gap: .55rem; height: 2.3rem; padding: 0 .95rem; border: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 80%, transparent);
  cursor: pointer; font: 400 .62rem/1 var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--ink-2); transition: border-color .4s var(--ease), color .4s var(--ease); }
.x-toggle:hover { border-color: var(--ink-3); color: var(--ink); }
.x-toggle svg { width: 15px; height: 15px; }
.x-hint { display: inline-flex; align-items: center; gap: .55rem; font: 400 .6rem/1 var(--mono); letter-spacing: .2em; text-transform: uppercase; color: var(--ink-3); transition: opacity .6s var(--ease); }
.x-hint::before { content: ""; width: 18px; height: 18px; border: 1px dashed var(--accent); border-radius: 50%; animation: xspin 6s linear infinite; }
.xray.touched .x-hint { opacity: 0; }
@keyframes xspin { to { transform: rotate(360deg); } }

/* ---------------------------------------------------------------- главы 01–04 */
.chapter { position: relative; padding: clamp(5rem, 13vh, 8.5rem) 0; }
.chapter .wrap { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(2rem, 5vw, 5rem); align-items: center; }
.chapter.flip .wrap { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.chapter.flip .ch-text { order: 2; }
.ch-head { position: relative; display: flex; align-items: center; gap: 1rem; padding-bottom: 1rem; margin-bottom: clamp(1.4rem, 3vh, 2rem); border-bottom: 1px solid var(--line); }
.js .ch-head { border-bottom-color: transparent; }
.js .ch-head::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px; background: var(--line); transform-origin: left; transform: scaleX(0);
  transition: transform 1.4s var(--ease) .15s; }
.js .in .ch-head::after, .js .ch-head.in::after { transform: none; }
.ch-head .num { font-size: .72rem; }
.ch-head .eyebrow { margin: 0; }
.ch-text .display { margin-bottom: clamp(1.1rem, 2.6vh, 1.6rem); }
.spec { margin-top: clamp(1.5rem, 3.2vh, 2.2rem); border-top: 1px solid var(--line); }
.spec > div { display: grid; grid-template-columns: 8.5rem minmax(0, 1fr); gap: 1rem; padding: .7rem 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.spec dt { font: 400 .6rem/1.5 var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--ink-3); }
.spec dd { font-size: .9rem; line-height: 1.5; color: var(--ink); }
.panel { padding: clamp(1.4rem, 3vw, 2.4rem); background: color-mix(in srgb, var(--bg-2) 70%, transparent); }

/* точечные схемы */
.scheme { display: grid; gap: 1rem; }
.scheme svg { width: 100%; height: auto; overflow: visible; color: var(--ink-2); }
.scheme .dl { fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 0 7; }
.scheme .dl.gold { stroke: var(--accent); }
.scheme .flow { fill: none; stroke: var(--accent); stroke-width: 2.4; stroke-linecap: round; stroke-dasharray: 0 9; animation: flow 1.6s linear infinite; }
.scheme .solid { fill: none; stroke: currentColor; stroke-width: 1.2; opacity: .5; }
.scheme .fillg { fill: var(--accent); }
.scheme .fillg2 { fill: color-mix(in srgb, var(--accent) 20%, transparent); }
@keyframes flow { to { stroke-dashoffset: -18; } }
@media (prefers-reduced-motion: reduce) { .scheme .flow { animation: none; } }
.scheme-labels { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.scheme-labels div { display: grid; gap: .25rem; }
.scheme-labels b { font: 500 .62rem/1.4 var(--mono); letter-spacing: .2em; text-transform: uppercase; color: var(--ink); }
.scheme-labels span { font-size: .82rem; line-height: 1.4; color: var(--ink-2); }
.scheme-labels div:nth-child(2) { text-align: center; } .scheme-labels div:nth-child(3) { text-align: right; }

/* 02 — перевод: оригинал → Google → Tolk AI */
.cmp dd { font-family: var(--display); font-size: 1.2rem; line-height: 1.3; font-weight: 450; }
.cmp .src dd { color: var(--ink-2); }
.cmp .g dd { color: var(--ink-3); text-decoration: line-through; text-decoration-color: color-mix(in srgb, var(--hot) 55%, transparent); text-decoration-thickness: 1px; }
.cmp .t dt { color: var(--accent); }
.cmp .t dd { font-size: 1.5rem; line-height: 1.22; font-weight: 560; color: var(--ink); }
.cmp-rows dd { transition: opacity .38s var(--ease), filter .38s var(--ease), transform .38s var(--ease); }
.cmp-rows dd.swap { opacity: 0; filter: blur(6px); transform: translateY(6px); }
.cmp-rows > div { min-height: 3.4rem; }
.cmp-nav { display: flex; align-items: center; gap: .9rem; margin-top: 1.1rem; }
.cmp-n { font: 400 .62rem/1 var(--mono); letter-spacing: .2em; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.cmp-bar { flex: 1; height: 1px; background: var(--line); overflow: hidden; }
.cmp-bar i { display: block; height: 100%; background: var(--accent); transform-origin: left; transform: scaleX(0); }
.cmp-btn { width: 2.2rem; height: 2.2rem; border: 1px solid var(--line); background: none; cursor: pointer; display: grid; place-items: center;
  color: var(--ink-2); transition: border-color .4s var(--ease), color .4s var(--ease); }
.cmp-btn:hover { border-color: var(--ink); color: var(--ink); }
.cmp-btn svg { width: 15px; height: 15px; }
.chapter .note { margin-top: 1rem; }

/* 03 — песочница субтитров: те же стили, размер, «слов в строке» и ширина, что в Tolk (config.STYLE_PRESETS, render.paint_box) */
.sb { margin-top: 1.6rem; border-top: 1px solid var(--line); }
.sb-row { display: grid; grid-template-columns: 8.5rem minmax(0, 1fr); gap: .5rem 1rem; align-items: center; padding: .75rem 0; border-bottom: 1px solid var(--line); }
.sb-row > .tog { grid-column: 2; justify-self: start; }
.sb-k { font: 400 .6rem/1.5 var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--ink-3); }
.chips { display: flex; flex-wrap: wrap; gap: .35rem; }
.chips button, .seg button { border: 1px solid var(--line); background: transparent; padding: .55rem .8rem; cursor: pointer;
  font: 400 .6rem/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-2); transition: all .4s var(--ease); }
.chips button:hover, .seg button:hover { border-color: var(--ink-3); color: var(--ink); }
.chips button[aria-pressed="true"], .seg button[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.seg { display: inline-flex; flex-wrap: wrap; gap: .35rem; }
.seg button { min-width: 2.6rem; }
.sb-range { display: flex; align-items: center; gap: .9rem; }
.sb-range input { flex: 1; min-width: 0; max-width: 16rem; accent-color: var(--accent); height: 1.4rem; }
.sb-range output { font: 400 .62rem/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink); min-width: 6.5rem; }
.tog { display: inline-flex; align-items: center; gap: .6rem; cursor: pointer; font: 400 .6rem/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-2); }
.tog input { position: absolute; opacity: 0; pointer-events: none; }
.tog .tg { width: 2.1rem; height: 1.15rem; border: 1px solid var(--line); border-radius: 1rem; position: relative; transition: background .3s, border-color .3s; }
.tog .tg::after { content: ""; position: absolute; left: 2px; top: 2px; width: calc(1.15rem - 6px); height: calc(1.15rem - 6px); border-radius: 50%; background: var(--ink-3); transition: transform .35s var(--ease), background .3s; }
.tog input:checked + .tg { background: var(--ink); border-color: var(--ink); }
.tog input:checked + .tg::after { transform: translateX(.95rem); background: var(--bg); }
.tog input:focus-visible + .tg { outline: 2px solid var(--accent); outline-offset: 2px; }
.sb-stage .note { margin-top: .8rem; }

.screen { position: relative; aspect-ratio: 16 / 10; overflow: hidden; touch-action: none;
  background: radial-gradient(circle at 1px 1px, var(--dot) 1px, transparent 1.4px) 0 0 / 18px 18px,
    radial-gradient(90% 70% at 50% 18%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 70%), color-mix(in srgb, var(--bg-2) 80%, transparent);
  border: 1px solid var(--line); }
.screen .axis { position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(var(--line), var(--line)) 50% 0 / 1px 100% no-repeat, linear-gradient(var(--line), var(--line)) 0 50% / 100% 1px no-repeat; opacity: .6; }
.screen .size, .screen .eng { position: absolute; top: .7rem; font: 400 .6rem/1 var(--mono); letter-spacing: .16em; color: var(--ink-3); text-transform: uppercase; }
.screen .size { left: .8rem; }
.screen .eng { right: .8rem; color: var(--accent); }
.live { --fs: 16px; --tx: #f5f1e8; position: absolute; left: 50%; top: 76%; width: 70%; transform: translate(-50%, -50%); cursor: grab; touch-action: none;
  user-select: none; -webkit-user-select: none; padding: calc(var(--fs) * .24) calc(var(--fs) * .5); border-radius: calc(var(--fs) * .36); }
.live.dragging { cursor: grabbing; }
.live p { margin: 0; font-family: "Geist", "Segoe UI", system-ui, sans-serif; color: var(--tx); overflow-wrap: anywhere; }
.live .tr { font-size: var(--fs); line-height: 1.24; font-weight: 400; letter-spacing: -.004em; }
.live .og { font-size: calc(var(--fs) * .62); line-height: 1.3; margin-top: calc(var(--fs) * .1); opacity: .78; }
.live .og:empty, .live.no-og .og { display: none; }
.live .w { transition: opacity .22s ease-out, color .7s ease-out; }
.live .w.new { opacity: 0; }
.live[data-style="graphite"] .w.hot { color: #e9cf9e; }
/* подложки — как render.paint_box: графит (глубина + тёплая кромка), стекло (блик), без подложки (ореол), классика, светлые, контраст */
.live[data-style="graphite"] { --tx: #f5f1e8; background: linear-gradient(rgba(22, 22, 27, .8), rgba(13, 13, 16, .83));
  box-shadow: inset 0 1px 0 rgba(239, 221, 184, .22), inset 0 0 0 1px rgba(255, 255, 255, .03), 0 calc(var(--fs) * .17) calc(var(--fs) * .73) rgba(0, 0, 0, .47); }
.live[data-style="glass"] { --tx: #fff; background: linear-gradient(rgba(255, 255, 255, .1), rgba(255, 255, 255, .022) 42%, rgba(255, 255, 255, .008) 43%, rgba(255, 255, 255, .016)), rgba(42, 47, 58, .4);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .17), inset 0 0 0 1px rgba(255, 255, 255, .07), 0 calc(var(--fs) * .17) calc(var(--fs) * .73) rgba(0, 0, 0, .24); }
.live[data-style="minimal"] { --tx: #fff; }
.live[data-style="minimal"] p { text-shadow: 0 0 4px rgba(0, 0, 0, .85), 0 0 10px rgba(0, 0, 0, .55), 0 1px 2px rgba(0, 0, 0, .9); }
.live[data-style="classic"] { --tx: #fff; background: rgba(0, 0, 0, .62); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .055), 0 calc(var(--fs) * .1) calc(var(--fs) * .53) rgba(0, 0, 0, .29); }
.live[data-style="light"] { --tx: #11151f; background: linear-gradient(rgba(255, 255, 255, .22), rgba(255, 255, 255, .05) 42%, rgba(255, 255, 255, .02) 43%, rgba(255, 255, 255, .035)), rgba(255, 255, 255, .88);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .7), inset 0 -1px 0 rgba(0, 0, 0, .075), 0 calc(var(--fs) * .17) calc(var(--fs) * .73) rgba(0, 0, 0, .4); }
.live[data-style="contrast"] { --tx: #fff; background: #000; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .086), 0 calc(var(--fs) * .1) calc(var(--fs) * .53) rgba(0, 0, 0, .47); }
.live .rz { position: absolute; top: 50%; width: 10px; height: 34px; margin-top: -17px; border: 1px solid var(--accent); background: var(--bg); border-radius: 3px; cursor: ew-resize;
  opacity: 0; transition: opacity .3s; }
.live .rz.l { left: -6px; } .live .rz.r { right: -6px; }
.live:hover .rz, .live.sizing .rz, .live:not(.moved) .rz { opacity: 1; }
.live.sizing { outline: 1px dashed var(--accent); outline-offset: 4px; }
.drag-hint { position: absolute; right: 0; bottom: calc(100% + .8rem); display: flex; align-items: center; gap: .6rem; font: 400 .6rem/1 var(--mono);
  letter-spacing: .22em; text-transform: uppercase; color: var(--ink-2); transition: opacity .5s var(--ease); white-space: nowrap; pointer-events: none; }
.drag-hint::before { content: ""; width: 2.2rem; height: 1px; background: linear-gradient(to right, transparent, var(--accent)); }
.live.moved .drag-hint { opacity: 0; }

/* 04 — учёба: снимок конспекта со схемой */
.study-shot { position: relative; }
.study-shot img { width: 100%; height: auto; border-radius: 12px; box-shadow: 0 0 0 1px var(--shot-edge), var(--shot-shadow); }
.study-shot .scheme { margin-top: 1.4rem; }

/* ---------------------------------------------------------------- цены */
.section { position: relative; }
.pricing { padding: clamp(5rem, 13vh, 8.5rem) 0 clamp(4rem, 9vh, 6rem); }
.pricing .head { max-width: 46rem; margin-bottom: clamp(2.2rem, 5vh, 3.4rem); }
.pricing .head .display { margin: 0 0 1.2rem; }
.plans { position: relative; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.plan { position: relative; display: flex; flex-direction: column; padding: 1.5rem 1.3rem 1.4rem; border-left: 1px solid var(--line); min-width: 0; }
.plan:first-child { border-left: 0; padding-left: 0; }
.plan .nm { display: flex; justify-content: space-between; align-items: baseline; font: 400 .62rem/1 var(--mono); letter-spacing: .2em; text-transform: uppercase; color: var(--ink-3); }
.plan .save { color: var(--accent); letter-spacing: .08em; }
.plan .price { margin-top: 1.3rem; font: 600 clamp(2.3rem, 3.3vw, 3.3rem)/1 var(--display); letter-spacing: -.01em; font-variant-numeric: lining-nums tabular-nums; }
.plan .pm { margin-top: .35rem; font-size: .8rem; color: var(--ink-3); min-height: 1.3em; }
.plan .hours { margin-top: 1.2rem; padding-top: .9rem; border-top: 1px solid var(--line); font-size: .84rem; color: var(--ink-2); line-height: 1.45; }
.plan .hours b { color: var(--ink); font-weight: 500; }
.plan .alt { margin: .7rem 0 1.4rem; font: 400 .62rem/1.7 var(--mono); letter-spacing: .02em; color: var(--ink-3); }
.plan .alt span { display: block; white-space: nowrap; }
.plan .buy { margin-top: auto; display: inline-flex; align-items: center; gap: .5rem; align-self: flex-start; font: 500 .88rem/1 var(--sans); padding: .55rem 0; position: relative; }
.plan .buy::after { content: ""; position: absolute; left: 0; right: 1.5rem; bottom: 0; height: 1px; background: currentColor; opacity: .3; transition: opacity .4s; }
.plan .buy svg { width: 15px; height: 15px; transition: transform .6s var(--ease); }
.plan .buy:hover svg { transform: translateX(5px); }
.plan .buy:hover::after { opacity: 1; }
.plan.best { background: color-mix(in srgb, var(--accent) 9%, transparent); }
.plan.best::before { content: ""; position: absolute; inset: -1px; pointer-events: none; --l: 12px; --t: 1.5px; --c: var(--accent);
  background:
    linear-gradient(var(--c), var(--c)) top left / var(--l) var(--t), linear-gradient(var(--c), var(--c)) top left / var(--t) var(--l),
    linear-gradient(var(--c), var(--c)) top right / var(--l) var(--t), linear-gradient(var(--c), var(--c)) top right / var(--t) var(--l),
    linear-gradient(var(--c), var(--c)) bottom left / var(--l) var(--t), linear-gradient(var(--c), var(--c)) bottom left / var(--t) var(--l),
    linear-gradient(var(--c), var(--c)) bottom right / var(--l) var(--t), linear-gradient(var(--c), var(--c)) bottom right / var(--t) var(--l);
  background-repeat: no-repeat; }
.plan.best .buy { align-self: stretch; justify-content: center; height: 2.8rem; background: var(--ink); color: var(--bg); transition: background .5s var(--ease), color .5s var(--ease); }
.plan.best .buy::after { content: none; }
.plan.best .buy:hover { background: var(--accent); color: var(--on-accent); }
.pay-notes { position: relative; margin-top: 1.8rem; display: grid; gap: .55rem; font-size: .9rem; color: var(--ink-2); }
.pay-notes b { color: var(--ink); font-weight: 500; }
.mono-k { font: 400 .62rem/1 var(--mono); letter-spacing: .2em; text-transform: uppercase; color: var(--ink-3); margin-right: .6rem; }
.plan-tabs { display: inline-flex; padding: 3px; gap: 2px; border: 1px solid var(--line); margin: 0 0 1.4rem; }
.plan-tabs button { height: 2.3rem; padding: 0 1.1rem; font: 500 .86rem/1 var(--sans); color: var(--ink-2); background: none; border: 0; cursor: pointer; transition: background .4s, color .4s; }
.plan-tabs button[aria-pressed="true"] { background: var(--ink); color: var(--bg); }
.pro-lede { max-width: 46rem; margin: -.4rem 0 1.4rem; color: var(--ink-2); font-size: .95rem; line-height: 1.6; }
.sale-band { display: flex; flex-wrap: wrap; align-items: baseline; gap: .4rem 1.2rem; margin: 0 0 1.6rem; padding: 1rem 1.2rem;
  border: 1px solid color-mix(in srgb, #f08a4b 50%, var(--line)); background: linear-gradient(120deg, color-mix(in srgb, #f08a4b 14%, transparent), transparent 70%); }
.sale-band .ey { font: 400 .62rem/1 var(--mono); letter-spacing: .2em; text-transform: uppercase; color: var(--hot); }
.sale-band > b { font: 600 1.6rem/1.1 var(--display); }
.sale-band span { font-size: .85rem; color: var(--ink-2); }
.sale-band .left { margin-left: auto; }
.sale-band .cd { font: 500 .9rem var(--mono); color: var(--ink); font-variant-numeric: tabular-nums; }
.plan .save.hot { color: var(--hot); }
.plan .price s { display: block; font-size: .42em; color: var(--ink-3); text-decoration-thickness: 1px; margin-bottom: .2rem; }
.plan.off .price { color: var(--hot); }
.pay-notes s { color: var(--ink-3); }

/* ---------------------------------------------------------------- вопросы и подвал */
.outro { padding: clamp(4rem, 11vh, 7rem) 0 clamp(2rem, 5vh, 3rem); }
.faq-grid { display: grid; grid-template-columns: 13rem minmax(0, 1fr); gap: 2rem; }
.faq { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 3rem; }
.faq .col { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; position: relative; padding: 1.1rem 2.2rem 1.1rem 0; font: 560 1.18rem/1.25 var(--display); transition: color .3s; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { color: var(--accent); }
.faq summary::before, .faq summary::after { content: ""; position: absolute; right: .3rem; top: 50%; width: 11px; height: 1px; background: currentColor; transition: transform .6s var(--ease); }
.faq summary::after { transform: rotate(90deg); }
.faq details[open] summary::after { transform: rotate(0deg); }
.faq .a { overflow: hidden; }
.faq .a p { padding: 0 1rem 1.3rem 0; font-size: .92rem; color: var(--ink-2); }

.final { margin-top: clamp(4.5rem, 11vh, 7rem); padding: clamp(1.6rem, 4vw, 3rem); display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 2rem;
  background: color-mix(in srgb, var(--bg-2) 70%, transparent); }
.final .display { font-size: clamp(2.7rem, 5.6vw, 5.8rem); max-width: 15ch; }
.final-cta { display: grid; justify-items: start; gap: .5rem; }

.foot { margin-top: clamp(3.5rem, 9vh, 5rem); display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 2rem; }
.colophon { border-top: 1px solid var(--line); max-width: 42rem; }
.colophon > div { display: grid; grid-template-columns: 10rem minmax(0, 1fr); gap: 1rem; padding: .62rem 0; border-bottom: 1px solid var(--line); font: 400 .72rem/1.5 var(--mono); letter-spacing: .04em; }
.colophon dt { font-size: .6rem; letter-spacing: .2em; text-transform: uppercase; color: var(--ink-3); align-self: center; }
.sign { display: flex; align-items: center; gap: .6rem; font: 400 .62rem/1 var(--mono); letter-spacing: .3em; text-transform: uppercase; color: var(--ink-3); padding-bottom: .7rem; }
.sign .sep { opacity: .5; }

/* появление при прокрутке (site.js добавляет .in); без скрипта всё видно */
.js [data-rise] { opacity: 0; transform: translateY(26px); transition: opacity 1s var(--ease), transform 1.1s var(--ease); }
.js [data-rise].in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js [data-rise] { transform: translateY(10px); transition-duration: .6s; } }

/* ---------------------------------------------------------------- узкие экраны */
/* ПК: первый экран закреплён, прокрутка ведёт по шагам 01–04 (site.js → pinScroll); шаги — на месте текста слева */
.steps-x { display: none; }
@media (min-width: 1101px) and (min-height: 640px) {
  .hero-pin .hero { display: block; height: 320vh; min-height: 0; padding: 0; }
  .hero-pin .hero > .wrap { position: sticky; top: 0; height: 100vh; height: 100svh; align-content: center; box-sizing: border-box;
    padding: clamp(5.5rem, 12vh, 7.5rem) 0 clamp(2.5rem, 6vh, 4rem); }
  .hero-pin .hero-copy, .hero-pin .steps-x { grid-column: 1; grid-row: 1; }
  .hero-pin .hero-copy { transition: opacity .55s var(--ease), transform .8s var(--ease); }
  .hero-pin .hero:not([data-step="0"]) .hero-copy { opacity: 0; transform: translateY(-2.2rem); pointer-events: none; visibility: hidden;
    transition: opacity .45s var(--ease), transform .8s var(--ease), visibility 0s .45s; }
  .hero-pin .steps-x { display: grid; gap: 1.6rem; align-content: center; opacity: 0; transform: translateY(2rem); pointer-events: none;
    visibility: hidden; transition: opacity .5s var(--ease), transform .9s var(--ease), visibility 0s .5s; }
  .hero-pin .hero:not([data-step="0"]) .steps-x { opacity: 1; transform: none; pointer-events: auto; visibility: visible; transition-delay: .12s, .12s, 0s; }
  .steps-x ol { display: grid; border-bottom: 1px solid var(--line); }
  .steps-x li { border-top: 1px solid var(--line); }
  .steps-x li > button { position: relative; display: grid; grid-template-columns: 2.6rem 1fr; align-items: baseline; width: 100%; padding: 1.05rem 0;
    text-align: left; color: var(--ink-3); cursor: pointer; transition: color .4s var(--ease); background: none; border: 0; border-radius: 0;
    font: inherit; -webkit-appearance: none; appearance: none; }
  .steps-x li > button:hover { color: var(--ink-2); }
  .steps-x .n { font: 500 .68rem/1 var(--mono); letter-spacing: .16em; color: inherit; transition: color .4s; }
  .steps-x .t { display: grid; }
  .steps-x b { font: 600 clamp(1.5rem, 2.1vw, 1.9rem)/1.05 var(--display); letter-spacing: -.005em; transition: font-size .5s var(--ease), color .4s; }
  .steps-x .d { display: grid; grid-template-rows: 0fr; opacity: 0; transition: grid-template-rows .6s var(--ease), opacity .4s, margin .6s var(--ease); }
  .steps-x .d > * { min-height: 0; }
  .steps-x .d { font-size: 1.02rem; line-height: 1.55; color: var(--ink-2); max-width: 30rem; }
  .steps-x .d { overflow: hidden; }
  .steps-x li.on > button { color: var(--ink); cursor: default; }
  .steps-x li.on .n { color: var(--accent); }
  .steps-x li.on b { font-size: clamp(2.6rem, 4vw, 3.9rem); }
  .steps-x li.on .d { grid-template-rows: 1fr; opacity: 1; margin-top: .8rem; }
  .steps-x .d .link { white-space: nowrap; }
  .steps-x .sp { position: absolute; left: 0; right: 0; bottom: -1px; height: 1px; background: var(--accent); transform-origin: 0 50%;
    transform: scaleX(0); pointer-events: none; }
  .steps-x li.on .sp { transform: scaleX(var(--sp, 0)); }
  .steps-x .btn { justify-self: start; height: 2.9rem; font-size: .9rem; }
  .hero-pin .hero:not([data-step="0"]) .callouts, .hero-pin .hero:not([data-step="0"]) .x-ctl,
  .hero-pin .hero:not([data-step="0"]) .xray figcaption { opacity: 0 !important; pointer-events: none; }
  .hero-pin .xray[data-focus] .layer { opacity: .14; filter: saturate(.4) blur(.5px); }
  .hero-pin .xray[data-focus="sub"] .l-sub, .hero-pin .xray[data-focus="win"] .l-win,
  .hero-pin .xray[data-focus="notes"] .l-notes { opacity: 1; filter: none; }
  .hero-pin .xray .stage { transform-origin: 50% 50%; will-change: transform; }
}

@media (max-width: 1100px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .xray { max-width: 46rem; margin: 0 auto; }
  .plans { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .plan:nth-child(4) { border-left: 0; padding-left: 0; }
  .plan:nth-child(n+4) { border-top: 1px solid var(--line); }
  .faq { grid-template-columns: 1fr; }
  .faq .col + .col { border-top: 0; }
  .nav-links { display: none; }
}
@media (max-width: 860px) {
  .chapter .wrap, .chapter.flip .wrap { grid-template-columns: 1fr; }
  .chapter.flip .ch-text { order: 0; }
}
@media (max-width: 760px) {
  .hero { padding-top: 5.6rem; min-height: 0; }
  .hero .display { font-size: clamp(2.9rem, 13.5vw, 4.2rem); }
  .xray { aspect-ratio: auto; margin-top: .5rem; }
  .xray .stage { position: relative; inset: auto; aspect-ratio: 1.08; }
  .callouts { position: static; width: auto; margin-top: .4rem; gap: 0; }
  .callouts li { border-top: 1px solid var(--line); }
  .callouts button { background: none; backdrop-filter: none; -webkit-backdrop-filter: none; padding: .5rem 0; border: 0; }
  .callouts li.on button { background: none; }
  .callouts li.on b { color: var(--accent); }
  .xray figcaption { position: static; margin-top: .6rem; }
  .spec > div { grid-template-columns: 6.6rem minmax(0, 1fr); gap: .7rem; padding: .55rem 0; }
  .spec dd { font-size: .84rem; }
  .cmp dd { font-size: 1.06rem; }
  .cmp .t dd { font-size: 1.22rem; }
  .cmp-rows > div { min-height: 0; }
  .chapter .display { font-size: clamp(2.4rem, 11vw, 3.2rem); }
  .scheme-labels span { font-size: .74rem; }
  .plans { grid-template-columns: 1fr; border-bottom: 0; }
  .plan, .plan:first-child, .plan:nth-child(4) { border-left: 0; padding: 1.2rem 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); column-gap: 1rem; }
  .plan:nth-child(n+4) { border-top: 0; }
  .plan .nm { grid-column: 1 / -1; }
  .plan .price { grid-column: 1; margin-top: .8rem; font-size: 2.6rem; }
  .plan .pm { grid-column: 1; }
  .plan .hours { grid-column: 2; grid-row: 2 / span 2; margin-top: .8rem; padding-top: 0; border-top: 0; }
  .plan .alt { grid-column: 1 / -1; margin: .6rem 0 .8rem; }
  .plan .alt span { display: inline; } .plan .alt span + span::before { content: " · "; }
  .plan .buy { grid-column: 1 / -1; }
  .plan.best { padding-left: 1rem; padding-right: 1rem; }
  .faq-grid { grid-template-columns: 1fr; gap: .4rem; }
  .faq summary { font-size: 1.1rem; }
  .foot { grid-template-columns: 1fr; }
  .colophon > div { grid-template-columns: 7.5rem minmax(0, 1fr); font-size: .68rem; }
}
@media (max-width: 480px) {
  .nav .pill { display: none; }
  .langs button { padding: .45rem .22rem; }
}

/* ---------------------------------------------------------------- простые страницы (конфиденциальность, переход в бота) */
.page-nav { position: fixed; top: 0; left: 0; right: 0; z-index: 20; display: flex; align-items: center; gap: 1.2rem; padding: clamp(1rem, 2.2vw, 1.6rem) var(--gutter);
  background: linear-gradient(to bottom, var(--bg) 45%, color-mix(in srgb, var(--bg) 0%, transparent)); }
.page-nav .links { display: flex; gap: 1rem; font: 400 .64rem/1 var(--mono); letter-spacing: .2em; color: var(--ink-3); }
.page { position: relative; z-index: 1; padding: clamp(7rem, 16vh, 10rem) 0 6rem; }
.page .wrap { max-width: 46rem; }
.page h1 { font: 620 clamp(2.5rem, 6vw, 4.4rem)/.94 var(--display); letter-spacing: -.012em; margin: 1rem 0 1.2rem; text-wrap: balance; }
.page h2 { font: 600 1.7rem/1.1 var(--display); margin: 2.6rem 0 .6rem; }
.page p, .page li { color: var(--ink-2); }
.page p + p { margin-top: .8rem; }
.page ul { padding-left: 1.2rem; margin: .6rem 0 0; list-style: disc; }
.page li + li { margin-top: .4rem; }
.page .box { border-top: 1px solid var(--ink); border-bottom: 1px solid var(--line); padding: 1.2rem 0; margin: 1.8rem 0; }
.page .box p { color: var(--ink); }
.page hr { border: 0; border-top: 1px solid var(--line); margin: 4.5rem 0; }
.page-foot { position: relative; z-index: 1; padding: 2rem var(--gutter) 3rem; display: flex; flex-wrap: wrap; gap: 1rem 2rem; font: 400 .66rem/1.5 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }

/* ---------------------------------------------------------------- Tolk Free над тарифами: бесплатно навсегда, только перевод */
.free-band { position: relative; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: .5rem 1.6rem;
  margin: 0 0 1.6rem; padding: 1.2rem 1.4rem; border: 1px solid var(--line); background: color-mix(in srgb, var(--bg-2, var(--bg)) 70%, transparent); }
.free-band .ey { grid-row: span 2; font: 400 .62rem/1.5 var(--mono); letter-spacing: .2em; text-transform: uppercase; color: var(--accent); max-width: 8rem; }
.free-band > b { font: 600 1.45rem/1.15 var(--display); }
.free-band .fb-s { grid-column: 2; font-size: .88rem; color: var(--ink-2); line-height: 1.5; }
.free-band .fb-go { grid-column: 3; grid-row: 1 / span 2; display: inline-flex; align-items: center; gap: .55rem; height: 2.9rem; padding: 0 1.2rem;
  border: 1px solid var(--line-2, var(--line)); color: var(--ink); font: 500 .92rem/1 var(--sans); text-decoration: none; white-space: nowrap;
  transition: background .35s, color .35s, border-color .35s; }
.free-band .fb-go svg { width: 16px; height: 16px; transition: transform .35s; }
.free-band .fb-go:hover { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.free-band .fb-go:hover svg { transform: translateX(3px); }
@media (max-width: 760px) {
  .free-band { grid-template-columns: 1fr; }
  .free-band .ey, .free-band .fb-s, .free-band .fb-go { grid-column: 1; grid-row: auto; }
  .free-band .fb-go { justify-self: start; }
}

/* ---------------------------------------------------------------- 05 — мини-экзамен: как «Задачи для практики» в Tolk (notes.js → openPractice) */
.exam { min-height: 25rem; display: grid; align-content: start; }
.exam .pr-top { display: flex; align-items: baseline; gap: .8rem; flex-wrap: wrap; margin-bottom: 1rem; }
.exam .pr-n { font: 400 .62rem/1 var(--mono); letter-spacing: .2em; text-transform: uppercase; color: var(--ink-2); }
.exam .pr-lvl { font: 500 .56rem/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--ink-2); border: 1px solid var(--line); padding: .4rem .6rem; }
.exam .pr-lvl.easy { color: var(--ok); } .exam .pr-lvl.hard { color: var(--accent); }
.exam .pr-from { font-size: .78rem; color: var(--ink-3); }
.exam .dots-n { margin-left: auto; display: flex; gap: .35rem; }
.exam .dots-n i { width: 7px; height: 7px; border-radius: 50%; border: 1px solid var(--ink-3); transition: background .4s, border-color .4s; }
.exam .dots-n i.cur { border-color: var(--accent); background: var(--accent); }
.exam .dots-n i.right { border-color: var(--ok); background: var(--ok); }
.exam .dots-n i.partial { border-color: var(--accent); }
.exam .dots-n i.wrong { border-color: var(--hot); }
.exam .pr-q { border: 1px solid var(--line); padding: 1.1rem 1.25rem; font-size: 1.04rem; line-height: 1.5; background: color-mix(in srgb, var(--bg) 55%, transparent); }
.exam .og { display: block; color: var(--ink); }
.exam .tl { display: block; margin: .3rem 0 0; padding-left: .75rem; border-left: 2px solid color-mix(in srgb, var(--accent) 38%, transparent); color: var(--ink-3); font-size: .9em; }
.exam .pr-hint { margin-top: .7rem; font-size: .9rem; color: var(--ink-2); }
.exam .pr-hint[hidden] { display: none; }
.exam .row { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; margin-top: 1rem; }
.exam .field { flex: 1 1 14rem; min-width: 0; height: 3rem; padding: 0 1rem; border: 1px solid var(--line); background: var(--bg); color: var(--ink);
  font: 400 1rem/1 var(--sans); transition: border-color .3s; }
.exam .field:focus { outline: none; border-color: var(--accent); }
.exam .btn { height: 3rem; padding: 0 1.2rem; font-size: .9rem; cursor: pointer; border: 0; }
.exam .lnk { border: 0; background: none; padding: .4rem 0; cursor: pointer; font: 500 .86rem/1 var(--sans); color: var(--ink-2); position: relative; }
.exam .lnk::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: currentColor; opacity: .3; }
.exam .lnk:hover { color: var(--ink); }
.exam .pr-v { margin-top: .9rem; font-size: .95rem; line-height: 1.5; animation: vin .5s var(--ease); }
.exam .pr-v b { font-weight: 600; }
.exam .pr-v.ok { color: var(--ok); } .exam .pr-v.gold { color: var(--accent); } .exam .pr-v.err { color: var(--hot); }
@keyframes vin { from { opacity: 0; transform: translateY(6px); } }
.exam .pr-sol { margin-top: 1.1rem; padding-top: 1rem; border-top: 1px solid var(--line); animation: vin .5s var(--ease); }
.exam .pr-sol .cap { font: 400 .6rem/1.5 var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--ink-3); margin-bottom: .6rem; }
.exam .pr-sol .meth { font-size: .86rem; color: var(--ink-2); margin-bottom: .6rem; }
.exam .pr-sol ol { display: grid; gap: .35rem; counter-reset: st; }
.exam .pr-sol li { counter-increment: st; display: grid; grid-template-columns: 1.6rem 1fr; font: 400 1rem/1.45 var(--mono); letter-spacing: -.01em; }
.exam .pr-sol li::before { content: counter(st, decimal-leading-zero); font-size: .62rem; letter-spacing: .1em; color: var(--accent); padding-top: .3rem; }
.exam .pr-sol .fin { margin-top: .7rem; font-size: .95rem; }
.exam .nav-x { display: flex; justify-content: space-between; align-items: center; margin-top: 1.4rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.exam .end { display: grid; gap: 1rem; justify-items: start; animation: vin .6s var(--ease); }
.exam .score { font: 620 clamp(4rem, 8vw, 6.5rem)/.9 var(--display); letter-spacing: -.02em; }
.exam .score em { font-style: normal; color: var(--accent); }
.exam .end p { max-width: 30rem; color: var(--ink-2); }
.exam .end .score { color: var(--ink); }
.exam .end .row { margin-top: .4rem; gap: 1.2rem; }
.exam-wrap .note { margin-top: .8rem; }
.exam-wrap .js-mx { margin-top: .4rem; }

/* ---------------------------------------------------------------- живость: подсветка под курсором, слова заголовков, ореол */
.spot { --mx: 50%; --my: 50%; }
.spot::after { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity .5s var(--ease); z-index: 0;
  background: radial-gradient(28rem circle at var(--mx) var(--my), color-mix(in srgb, var(--accent) 11%, transparent), transparent 62%); }
.spot:hover::after { opacity: 1; }
.spot > * { position: relative; z-index: 1; }
.screen.spot > .live, .screen.spot > .size, .screen.spot > .eng { position: absolute; }
.screen.spot > .axis { position: absolute; z-index: 0; }
.js .split .w { display: inline-block; overflow: hidden; vertical-align: top; padding-bottom: .08em; margin-bottom: -.08em; }
.js .split .w > span { display: inline-block; transform: translateY(105%); transition: transform 1.1s var(--ease); transition-delay: calc(var(--i, 0) * 55ms + 80ms); }
.js .split.on .w > span { transform: none; }
.aura { position: fixed; left: 0; top: 0; width: 46rem; height: 46rem; margin: -23rem 0 0 -23rem; border-radius: 50%; pointer-events: none; z-index: 0;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--accent) 9%, transparent), transparent); opacity: 0; transition: opacity 1s var(--ease); will-change: transform; }
.aura.on { opacity: 1; }
@media (hover: none) { .aura { display: none; } }
@media (prefers-reduced-motion: reduce) { .x-hint::before { animation: none; } }
@media (max-width: 760px) {
  .x-ctl { position: static; margin-top: .8rem; justify-content: space-between; }
  .sb-row { grid-template-columns: 1fr; gap: .5rem; }
  .sb-row > .tog { grid-column: 1; }
  .exam { min-height: 0; }
  .exam .dots-n { margin-left: 0; width: 100%; }
}