:root {
  --bg: #f3f4f1;
  --tint: #e9ecea;
  --paper: #ffffff;
  --ink: #171b1f;
  --ink-2: #4a535b;
  --ink-3: #7f8890;
  --line: #d8dcd8;
  --steel: #a8432a;
  --steel-d: #8a3420;
  --blue: #2f4a5f;
  --glass: rgba(255, 255, 255, .74);
  --r: 18px;
  --head-h: 64px;
  /* кривые и сроки (фишка 50) */
  --ease-out: cubic-bezier(.23, 1, .32, 1);
  --ease-move: cubic-bezier(.77, 0, .175, 1);
  --ease-drawer: cubic-bezier(.32, .72, 0, 1);
  --font: "Golos Text", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 16px/1.55 var(--font); overflow-x: hidden; }
img { max-width: 100%; display: block; }
[hidden] { display: none !important; }
a { color: inherit; }
button { font: inherit; color: inherit; cursor: pointer; }
h1, h2, h3 { margin: 0; text-wrap: balance; font-weight: 700; letter-spacing: -.02em; }
h2 { font-size: clamp(28px, 3vw, 40px); line-height: 1.08; }
h3 { font-size: 19px; line-height: 1.25; letter-spacing: -.01em; }
p { margin: 0; }
.wrap { width: min(1200px, 100% - 64px); margin: 0 auto; }
.wrap-narrow { width: min(860px, 100% - 64px); }
.eyebrow { font: 500 13px/1.3 var(--mono); color: var(--steel); letter-spacing: .01em; margin-bottom: 14px; }
.eyebrow-light { color: #ffd9c9; }

/* кнопки (фишки 49–50) */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 0 22px; border-radius: 999px; border: 0; font-weight: 600; font-size: 16px; text-decoration: none; transition: transform 160ms var(--ease-out), background-color 450ms var(--ease-out), color 450ms var(--ease-out), box-shadow 450ms var(--ease-out); white-space: nowrap; }
.btn:active { transform: scale(.97); }
.btn-main { background: var(--steel); color: #fff; }
.btn-ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--ink); }
.btn-sm { min-height: 40px; padding: 0 18px; font-size: 15px; }
.btn-wide { width: 100%; }
@media (hover: hover) and (pointer: fine) {
  .btn-main:hover { background: var(--steel-d); transition-duration: 160ms, 125ms, 125ms, 125ms; }
  .btn-ghost:hover { background: var(--ink); color: #fff; transition-duration: 160ms, 125ms, 125ms, 125ms; }
}
:focus-visible { outline: 2px solid var(--steel); outline-offset: 3px; }

/* шапка: прячется вниз, появляется при прокрутке вверх */
.top { position: fixed; inset: 0 0 auto; height: var(--head-h); z-index: 50; display: flex; align-items: center; gap: 28px; padding: 0 32px; background: rgba(243, 244, 241, .78); backdrop-filter: blur(14px) saturate(1.2); -webkit-backdrop-filter: blur(14px) saturate(1.2); border-bottom: 1px solid rgba(23, 27, 31, .06); transition: transform 320ms cubic-bezier(.16, 1, .3, 1); }
.top.hide { transform: translateY(-110%); }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 800; font-size: 21px; letter-spacing: -.02em; }
.logo svg { width: 30px; height: 24px; color: var(--steel); }
.demo-chip { font: 500 11px/1 var(--mono); font-style: normal; color: var(--ink-3); border: 1px solid var(--line); padding: 4px 6px; border-radius: 6px; }
.nav { display: flex; gap: 22px; }
.nav a { text-decoration: none; color: var(--ink-2); font-size: 15px; font-weight: 500; transition: color 450ms var(--ease-out); }
.top-right { margin-left: auto; display: flex; align-items: center; gap: 18px; }
.phone { text-decoration: none; font-weight: 600; font-size: 15px; white-space: nowrap; font-variant-numeric: tabular-nums; }
.city-pick { position: relative; }
.city-btn { display: flex; align-items: center; gap: 6px; background: none; border: 0; font-size: 15px; font-weight: 500; padding: 8px 4px; color: var(--ink-2); }
.city-btn svg { width: 16px; height: 16px; color: var(--steel); }
.city-list { position: absolute; top: calc(100% + 6px); left: -8px; margin: 0; padding: 6px; list-style: none; background: var(--paper); border-radius: 14px; box-shadow: 0 12px 40px rgba(23, 27, 31, .14); min-width: 170px; transform-origin: top left; animation: pop 180ms var(--ease-out); }
.city-list li { padding: 10px 12px; border-radius: 9px; cursor: pointer; font-size: 15px; }
.city-list li[aria-selected="true"] { color: var(--steel); font-weight: 600; }
@keyframes pop { from { opacity: 0; transform: scale(.96) translateY(-4px); } }
.burger { display: none; width: 44px; height: 44px; border: 0; background: none; position: relative; }
.burger i { position: absolute; left: 11px; right: 11px; height: 2px; background: var(--ink); transition: transform 300ms var(--ease-out); }
.burger i:first-child { top: 17px; } .burger i:last-child { top: 25px; }
.menu-open .burger i:first-child { transform: translateY(4px) rotate(45deg); }
.menu-open .burger i:last-child { transform: translateY(-4px) rotate(-45deg); }
@media (hover: hover) and (pointer: fine) {
  .nav a:hover { color: var(--steel); transition-duration: 125ms; }
  .city-list li:hover { background: var(--bg); }
}

/* ===== 1. Первый экран-конфигуратор ===== */
.hero { position: relative; height: 100vh; height: 100svh; min-height: 560px; overflow: hidden; background: linear-gradient(180deg, #b8c6d2 0%, #d6dee4 38%, #e9eef1 62%, #e9eef1 100%); }
.stage3d { position: absolute; inset: 0; }
.stage3d canvas { display: block; width: 100%; height: 100%; cursor: grab; }
.stage3d canvas:active { cursor: grabbing; }
.stage-fallback { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.dim { position: absolute; left: 0; top: 0; font: 500 13px/1 var(--mono); background: var(--ink); color: #fff; padding: 5px 8px; border-radius: 6px; pointer-events: none; opacity: 0; transition: opacity 300ms var(--ease-out); white-space: nowrap; z-index: 2; font-variant-numeric: tabular-nums; }
.drag-hint { position: absolute; left: 40px; bottom: 24px; font: 400 12px/1 var(--mono); color: var(--ink-3); pointer-events: none; display: none; }
.hero-head { position: absolute; top: calc(var(--head-h) + 26px); left: 40px; width: min(540px, calc(100% - 520px)); z-index: 3; pointer-events: none; }
.hero-head > * { pointer-events: auto; }
.hero h1 { font-size: clamp(32px, 3.3vw, 48px); line-height: 1.04; font-weight: 800; letter-spacing: -.03em; }
.hero .lead { margin-top: 14px; font-size: 16px; color: var(--ink-2); max-width: 46ch; }
.build-steps { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; padding: 0; margin: 18px 0 0; }
.build-steps li { font: 500 12px/1 var(--mono); padding: 7px 10px; border-radius: 999px; background: rgba(255, 255, 255, .5); color: var(--ink-3); transition: background-color 300ms var(--ease-out), color 300ms var(--ease-out); }
.build-steps li.on { background: var(--ink); color: #fff; }
.replay-wrap { margin-top: 10px; min-height: 20px; display: flex; gap: 12px; align-items: baseline; }
.drag-note { font: 400 12px/1 var(--mono); color: var(--ink-3); }
.replay { border: 0; background: none; padding: 4px 0; font: 500 13px/1 var(--mono); color: var(--steel); text-decoration: underline; text-underline-offset: 3px; }
.build-steps li.done { background: rgba(255, 255, 255, .85); color: var(--ink); }

.config { position: absolute; z-index: 4; top: calc(var(--head-h) + 16px); right: 28px; width: 392px; max-height: calc(100% - var(--head-h) - 32px); overflow: auto; overscroll-behavior: contain; background: var(--glass); backdrop-filter: blur(16px) saturate(1.3); -webkit-backdrop-filter: blur(16px) saturate(1.3); border-radius: 22px; padding: 16px 18px 18px; box-shadow: 0 1px 0 rgba(255, 255, 255, .9) inset, 0 20px 50px rgba(30, 45, 60, .16); display: grid; grid-template-columns: minmax(0, 1fr); gap: 10px; scrollbar-width: thin; }
.cfg-row { display: grid; gap: 6px; }
.cfg-label, .slider > span { font-size: 13px; color: var(--ink-2); font-weight: 500; }
.seg { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; background: rgba(23, 27, 31, .07); border-radius: 12px; padding: 3px; }
.seg button { border: 0; background: none; padding: 7px 6px; border-radius: 9px; font-size: 14px; font-weight: 500; color: var(--ink-2); transition: background-color 200ms var(--ease-out), color 200ms var(--ease-out), transform 160ms var(--ease-out); }
.seg button.on { background: #fff; color: var(--ink); box-shadow: 0 1px 4px rgba(23, 27, 31, .12); }
.seg button:active, .chips button:active, .stepper button:active { transform: scale(.97); }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chips button { border: 1.5px solid rgba(23, 27, 31, .14); background: rgba(255, 255, 255, .5); border-radius: 999px; padding: 6px 13px; font-size: 14px; font-weight: 500; transition: background-color 200ms var(--ease-out), border-color 200ms var(--ease-out), color 200ms var(--ease-out), transform 160ms var(--ease-out); }
.chips button.on { background: var(--ink); border-color: var(--ink); color: #fff; }
.slider { display: grid; grid-template-columns: 1fr auto; align-items: center; row-gap: 2px; }
.slider output { font: 500 15px/1 var(--mono); font-variant-numeric: tabular-nums; }
.slider input { grid-column: 1 / -1; }
input[type=range] { -webkit-appearance: none; appearance: none; width: 100%; height: 26px; background: none; margin: 0; --p: 50%; }
input[type=range]::-webkit-slider-runnable-track { height: 4px; border-radius: 4px; background: linear-gradient(90deg, var(--steel) var(--p), rgba(23, 27, 31, .14) var(--p)); }
input[type=range]::-moz-range-track { height: 4px; border-radius: 4px; background: rgba(23, 27, 31, .14); }
input[type=range]::-moz-range-progress { height: 4px; border-radius: 4px; background: var(--steel); }
input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 22px; height: 22px; margin-top: -9px; border-radius: 50%; background: #fff; border: 2px solid var(--steel); box-shadow: 0 2px 6px rgba(23, 27, 31, .2); transition: transform 160ms var(--ease-out); }
input[type=range]::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: #fff; border: 2px solid var(--steel); }
input[type=range]:active::-webkit-slider-thumb { transform: scale(1.15); }
.cfg-split { grid-template-columns: 1fr 1fr; gap: 12px; align-items: start; }
.warm-box, .gate-box { display: grid; gap: 6px; }
.gate-box { grid-template-columns: auto 1fr; align-items: center; column-gap: 8px; }
.gate-box .cfg-label { grid-column: 1 / -1; }
.switch { display: flex; align-items: center; gap: 8px; border: 0; background: none; padding: 4px 0; font-size: 14px; font-weight: 500; text-align: left; }
.switch i { flex: none; width: 40px; height: 24px; border-radius: 999px; background: rgba(23, 27, 31, .2); position: relative; transition: background-color 200ms var(--ease-out); }
.switch i::after { content: ""; position: absolute; top: 3px; left: 3px; width: 18px; height: 18px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0, 0, 0, .2); transition: transform 240ms var(--ease-out); }
.switch[aria-checked="true"] i { background: var(--steel); }
.switch[aria-checked="true"] i::after { transform: translateX(16px); }
.switch:disabled { opacity: .4; cursor: default; }
.stepper { display: flex; align-items: center; background: rgba(23, 27, 31, .07); border-radius: 10px; }
.stepper button { width: 30px; height: 32px; border: 0; background: none; font-size: 18px; transition: transform 160ms var(--ease-out); }
.stepper output { min-width: 16px; text-align: center; font: 500 15px/1 var(--mono); }
.seg-mini button { padding: 6px 4px; font-size: 13px; }
.gate-box.off { opacity: .4; pointer-events: none; }
.cfg-total { display: flex; justify-content: space-between; align-items: flex-end; gap: 8px; padding-top: 10px; border-top: 1px solid rgba(23, 27, 31, .1); }
.total-sum { font-size: 30px; font-weight: 800; letter-spacing: -.03em; line-height: 1.05; font-variant-numeric: tabular-nums; white-space: nowrap; }
.total-sum .from { font-size: 16px; font-weight: 500; color: var(--ink-2); letter-spacing: 0; }
.total-sum b { display: inline-block; }
.total-sum b.tick { animation: tick 300ms var(--ease-out); }
@keyframes tick { from { opacity: .4; transform: translateY(4px); } }
.total-meta span { white-space: nowrap; }
.total-meta { margin-top: 4px; font: 400 12.5px/1.4 var(--mono); color: var(--ink-2); }
.demo-note { font: 400 11px/1.3 var(--mono); color: var(--ink-3); text-align: right; max-width: 80px; }

@media (min-width: 901px) and (max-height: 760px) {
  .config { gap: 6px; padding: 12px 16px 14px; top: calc(var(--head-h) + 12px); max-height: calc(100% - var(--head-h) - 24px); }
  .config .cfg-row:not(.cfg-split) { grid-template-columns: 70px 1fr; align-items: center; }
  .seg button { padding: 6px 4px; }
  .chips { gap: 5px; flex-wrap: nowrap; }
  .chips button { padding: 5px 10px; font-size: 13.5px; }
  input[type=range] { height: 22px; }
  .slider { row-gap: 0; }
  .cfg-total { padding-top: 8px; }
  .total-sum { font-size: 26px; }
  .config .btn-wide { min-height: 44px; }
  .hero .lead { display: none; }
  .hero h1 { font-size: clamp(32px, 3vw, 44px); }
}

/* ===== секции ===== */
.sec { padding: 104px 0; }
.sec-tint { background: var(--tint); }
.sec-head { max-width: 760px; margin-bottom: 48px; }
.sec-head-row { max-width: none; display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; }
.sec-lead { margin-top: 16px; color: var(--ink-2); font-size: 17px; max-width: 62ch; }

/* типы */
.types { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.type { background: var(--paper); border-radius: var(--r); overflow: hidden; display: flex; flex-direction: column; text-align: left; border: 0; padding: 0; transition: transform 450ms var(--ease-out), box-shadow 450ms var(--ease-out); }
.type-pic { aspect-ratio: 3 / 2; background: linear-gradient(180deg, #d9e1e7, #eef1f3); position: relative; overflow: hidden; }
.type-pic img { width: 100%; height: 100%; object-fit: cover; transition: transform 600ms var(--ease-out); }
.type-tag { position: absolute; top: 12px; left: 12px; font: 500 12px/1 var(--mono); background: rgba(255, 255, 255, .85); padding: 6px 9px; border-radius: 7px; }
.type-body { padding: 18px 20px 20px; display: grid; gap: 8px; flex: 1; }
.type-body p { color: var(--ink-2); font-size: 15px; }
.type-foot { margin-top: auto; padding-top: 8px; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.type-price { font-weight: 700; font-variant-numeric: tabular-nums; }
.type-go { font-size: 14px; font-weight: 600; color: var(--steel); }
.type:active { transform: scale(.985); }
@media (hover: hover) and (pointer: fine) {
  .type:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(23, 27, 31, .1); transition-duration: 125ms, 125ms; }
  .type:hover .type-pic img { transform: scale(1.04); }
}

/* цены */
.prices { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.price { background: var(--paper); border-radius: var(--r); padding: 28px; display: grid; gap: 14px; align-content: start; }
.price-dims { font: 500 13px/1 var(--mono); color: var(--steel); }
.price-sum { font-size: 34px; font-weight: 800; letter-spacing: -.03em; line-height: 1; font-variant-numeric: tabular-nums; }
.price-sum small { font-size: 16px; font-weight: 500; color: var(--ink-2); letter-spacing: 0; }
.price-term { color: var(--ink-2); font-size: 15px; }
.price ul { list-style: none; padding: 14px 0 0; margin: 0; border-top: 1px solid var(--line); display: grid; gap: 8px; font-size: 15px; }
.price li { display: flex; justify-content: space-between; gap: 12px; }
.price li span:last-child { font-variant-numeric: tabular-nums; color: var(--ink-2); white-space: nowrap; }
.price .btn { margin-top: 8px; }
.demo-line { margin-top: 20px; font: 400 13px/1.4 var(--mono); color: var(--ink-3); }

/* объекты по городам */
.city-tabs { display: flex; gap: 4px; background: var(--tint); padding: 4px; border-radius: 999px; }
.city-tabs button { border: 0; background: none; padding: 10px 18px; border-radius: 999px; font-weight: 500; font-size: 15px; color: var(--ink-2); transition: background-color 200ms var(--ease-out), color 200ms var(--ease-out), transform 160ms var(--ease-out); }
.city-tabs button.on { background: var(--ink); color: #fff; }
.city-tabs button:active { transform: scale(.97); }
.cases { display: grid; grid-template-columns: 1.35fr 1fr; grid-template-rows: auto auto; gap: 24px; }
.case { position: relative; border-radius: var(--r); overflow: hidden; background: var(--paper); display: flex; flex-direction: column; }
.case:first-child .case-pic { flex: 1; }
.case:first-child { grid-row: span 2; }
.case-pic { position: relative; overflow: hidden; aspect-ratio: 16 / 10; background: #dfe5e9; }
.case:first-child .case-pic { aspect-ratio: auto; min-height: 380px; }
.case-pic img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.case-pic .clip { clip-path: inset(0 0 100% 0); transition: clip-path 800ms var(--ease-out); }
.case.in .case-pic .clip { clip-path: inset(0); }
.case-body { padding: 18px 20px 20px; display: grid; gap: 6px; }
.case-meta { font: 400 13px/1.4 var(--mono); color: var(--ink-2); }
.case-demo { position: absolute; top: 12px; right: 12px; font: 500 11px/1 var(--mono); background: rgba(255, 255, 255, .85); padding: 6px 8px; border-radius: 7px; z-index: 2; }
.case-kind { position: absolute; top: 12px; left: 12px; font: 500 11px/1 var(--mono); background: rgba(23, 27, 31, .78); color: #fff; padding: 6px 8px; border-radius: 7px; z-index: 2; }
.cases.swap .case { animation: swapIn 420ms var(--ease-out) both; animation-delay: calc(var(--i) * 60ms); }
@keyframes swapIn { from { opacity: 0; transform: translateY(12px); } }
.city-card { margin-top: 24px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; padding: 24px 28px; border-radius: var(--r); background: var(--tint); }
.cc-label { font: 500 12px/1.3 var(--mono); color: var(--ink-3); margin-bottom: 6px; }
.city-card p:not(.cc-label) { font-weight: 600; }
.city-card a { text-decoration: none; }

/* этапы */
.steps { display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: start; }
.steps-pic { position: sticky; top: calc(var(--head-h) + 40px); background: var(--paper); border-radius: var(--r); padding: 20px; }
.steps-pic svg { width: 100%; height: auto; display: block; }
.svg-t { font: 500 12px var(--mono); fill: #2f4a5f; }
.steps-pic .g { opacity: 0; transform: translateY(-14px); transition: opacity 450ms var(--ease-out), transform 600ms var(--ease-out); }
.steps-pic .g1, .steps-pic .g4 { transform: translateY(10px); }
.steps-pic .g.on { opacity: 1; transform: none; }
.steps-pic .g0.on { opacity: 1; }
.steps-cap { margin-top: 10px; font: 500 13px/1 var(--mono); color: var(--ink-3); }
.steps-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.steps-list li { padding: 40px 0 40px 28px; border-left: 2px solid var(--line); position: relative; transition: border-color 300ms var(--ease-out); min-height: 34vh; }
.steps-list li::before { content: ""; position: absolute; left: -7px; top: 46px; width: 12px; height: 12px; border-radius: 50%; background: var(--bg); border: 2px solid var(--line); transition: background-color 300ms var(--ease-out), border-color 300ms var(--ease-out); }
.steps-list li.on { border-color: var(--steel); }
.steps-list li.on::before { background: var(--steel); border-color: var(--steel); }
.st-num { font: 500 13px/1 var(--mono); color: var(--steel); }
.steps-list h3 { margin: 10px 0 8px; font-size: 24px; }
.steps-list p { color: var(--ink-2); max-width: 46ch; }

/* бригада: фото на весь экран */
.crew { position: relative; min-height: 100vh; min-height: 100svh; overflow: hidden; color: #fff; }
.crew-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 50% 70%; }
.crew::before { content: ""; position: absolute; z-index: 1; left: 0; top: 0; width: 62%; height: 78%; background: rgba(238, 243, 247, .5); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); -webkit-mask-image: radial-gradient(ellipse 70% 70% at 22% 32%, #000 45%, transparent 100%); mask-image: radial-gradient(ellipse 70% 70% at 22% 32%, #000 45%, transparent 100%); }
.crew { color: var(--ink); }
.crew-text { position: relative; z-index: 2; width: min(1200px, 100% - 64px); margin: 0 auto; padding-top: calc(var(--head-h) + 56px); max-width: 1200px; }
.crew-text h2 { max-width: 15ch; }
.crew-text p:not(.eyebrow) { margin-top: 16px; max-width: 44ch; font-size: 17px; color: var(--ink-2); }
.plates { position: absolute; z-index: 2; right: max(32px, calc((100% - 1200px) / 2)); top: calc(var(--head-h) + 60px); display: grid; gap: 14px; justify-items: end; }
.plate { background: rgba(255, 255, 255, .74); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); color: var(--ink); border-radius: 22px; padding: 14px 18px; display: grid; gap: 2px; max-width: 250px; }
.plate b { font-size: 24px; font-weight: 800; letter-spacing: -.02em; }
.plate span { font-size: 14px; color: var(--ink-2); }
.plate-tilt { transform: rotate(-2deg); }
.plates .plate { opacity: 0; translate: 0 -40px; transition: opacity 500ms var(--ease-out), translate 500ms var(--ease-out); }
.plates .plate + .plate { translate: 0 40px; transition-delay: 100ms; }
.plates.in .plate { opacity: 1; translate: 0 0; }

/* гарантия */
.guar { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.g-item { display: grid; gap: 10px; align-content: start; padding-top: 18px; border-top: 2px solid var(--ink); }
.g-num { font: 500 13px/1 var(--mono); color: var(--steel); }
.g-item p { color: var(--ink-2); font-size: 15px; }
.boss { margin-top: 56px; display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 28px 32px; border-radius: var(--r); background: var(--paper); }
.boss p { color: var(--ink-2); margin-top: 6px; max-width: 60ch; }

/* вопросы */
.faq { display: grid; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 22px 44px 22px 0; font-size: 19px; font-weight: 600; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; position: absolute; right: 6px; top: 50%; width: 14px; height: 14px; margin-top: -9px; border-right: 2px solid var(--ink); border-bottom: 2px solid var(--ink); transform: rotate(45deg); transition: transform 300ms var(--ease-out); }
.faq details[open] summary::after { transform: rotate(-135deg); margin-top: -3px; }
.faq details > div { padding: 0 44px 24px 0; color: var(--ink-2); max-width: 70ch; }
.faq details[open] > div { animation: faqIn 360ms var(--ease-out); }
@keyframes faqIn { from { opacity: 0; transform: translateY(-6px); } }

/* заявка */
.order { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: start; }
.next { list-style: none; counter-reset: n; padding: 0; margin: 28px 0 0; display: grid; gap: 16px; }
.next li { counter-increment: n; padding-left: 44px; position: relative; color: var(--ink-2); }
.next li::before { content: counter(n); position: absolute; left: 0; top: -2px; width: 30px; height: 30px; border-radius: 50%; background: var(--ink); color: #fff; font: 500 14px/30px var(--mono); text-align: center; }
.next b { color: var(--ink); font-weight: 600; }
.why-phone { margin-top: 24px; font-size: 14px; color: var(--ink-3); }
.order-form { position: relative; background: var(--paper); border-radius: 22px; padding: 32px; display: grid; gap: 18px; box-shadow: 0 20px 50px rgba(23, 27, 31, .06); }
.fld { display: grid; gap: 6px; }
.fld > span { font-size: 14px; font-weight: 600; }
.fld small { font-weight: 400; color: var(--ink-3); }
.fld input, .fld textarea { font: inherit; font-size: 16px; padding: 12px 14px; border-radius: 12px; border: 1.5px solid var(--line); background: var(--bg); color: var(--ink); transition: border-color 200ms var(--ease-out); resize: vertical; }
.fld textarea { font: 400 14px/1.5 var(--mono); }
.fld input:focus, .fld textarea:focus { outline: none; border-color: var(--ink); }
.fld .bad { border-color: #c0392b; }
.err { font-style: normal; font-size: 13px; color: #b03023; }
.seg-city button { padding: 10px 6px; font-size: 14px; }
.agree { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--ink-2); }
.agree input { width: 20px; height: 20px; margin: 1px 0 0; accent-color: var(--steel); flex: none; }
.agree.bad span { color: #b03023; }
.form-note { font: 400 12px/1.4 var(--mono); color: var(--ink-3); text-align: center; }
.sent { position: absolute; inset: 0; background: var(--paper); border-radius: 22px; display: grid; place-content: center; justify-items: center; text-align: center; gap: 14px; padding: 32px; animation: faqIn 400ms var(--ease-out); }
.sent svg { width: 56px; height: 56px; }
.sent p { color: var(--ink-2); max-width: 40ch; }

/* подвал */
.foot { background: var(--ink); color: #dfe3e6; padding: 80px 0 40px; overflow: hidden; }
.foot .cc-label { color: #8f99a2; }
.foot-cities { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.foot-cities a { font-size: 20px; font-weight: 600; text-decoration: none; color: #fff; font-variant-numeric: tabular-nums; }
.foot-cities p:not(.cc-label) { margin-top: 4px; color: #a5aeb6; font-size: 14px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 8px 32px; margin-top: 56px; }
.foot-links a { font-size: 22px; font-weight: 600; text-decoration: none; color: #fff; transition: filter 450ms var(--ease-out), opacity 450ms var(--ease-out); }
@media (hover: hover) and (pointer: fine) {
  .foot-links:hover a { filter: blur(2.5px); opacity: .5; }
  .foot-links a:hover { filter: none; opacity: 1; color: #ffb59c; transition-duration: 125ms; }
}
.foot-word { font-size: clamp(90px, 21vw, 330px); font-weight: 800; letter-spacing: -.06em; line-height: .9; color: #262c32; margin: 40px 0 0 -6px; padding-bottom: 12px; user-select: none; }
.foot-legal { display: grid; gap: 6px; font-size: 13px; color: #8f99a2; margin-top: 24px; }
.foot-legal a { color: #c7cdd2; }

/* шторка перехода (фишки 2, 17) */
.shutter { position: fixed; inset: 0; z-index: 90; background: var(--ink); transform: translateY(101%); display: grid; place-items: center; pointer-events: none; }
.shutter-label { color: #fff; font-size: clamp(36px, 6vw, 80px); font-weight: 800; letter-spacing: -.03em; opacity: 0; transform: translateY(12px); transition: opacity 250ms var(--ease-out), transform 300ms var(--ease-out); }
.shutter.show .shutter-label { opacity: 1; transform: none; }

/* модалка */
.modal { border: 0; border-radius: 22px; padding: 36px; max-width: 640px; width: calc(100% - 32px); max-height: 80vh; color: var(--ink); background: var(--paper); box-shadow: 0 30px 80px rgba(0, 0, 0, .25); }
.modal::backdrop { background: rgba(23, 27, 31, .45); backdrop-filter: blur(3px); }
.modal[open] { animation: pop 260ms var(--ease-out); }
.modal-x { position: absolute; top: 12px; right: 14px; width: 40px; height: 40px; border: 0; background: var(--bg); border-radius: 50%; font-size: 22px; line-height: 1; }
.modal-body h3 { font-size: 22px; margin-bottom: 14px; padding-right: 40px; }
.modal-body p { color: var(--ink-2); margin-bottom: 10px; font-size: 15px; }

/* cookie */
.cookie { position: fixed; z-index: 80; left: 16px; bottom: 16px; max-width: 420px; background: var(--paper); border-radius: 18px; padding: 16px 18px; box-shadow: 0 16px 50px rgba(23, 27, 31, .18); display: grid; gap: 12px; font-size: 14px; animation: faqIn 400ms var(--ease-out); }
.cookie > div { display: flex; gap: 8px; flex-wrap: wrap; }

.print-sheet { display: none; }

/* ===== адаптив ===== */
@media (max-width: 1180px) {
  .nav { display: none; }
  .types, .prices { grid-template-columns: repeat(2, 1fr); }
  .guar { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 1100px) and (min-width: 901px) {
  .hero-head { width: calc(100% - 480px); }
}
@media (max-width: 900px) {
  :root { --head-h: 58px; }
  .top { padding: 0 8px 0 16px; gap: 10px; }
  .phone, .top .btn-sm, .city-btn span { display: none; }
  .top-right { gap: 4px; }
  .city-btn { padding: 10px; }
  .city-list { left: auto; right: -40px; }
  .burger { display: block; }
  .nav { position: fixed; top: var(--head-h); left: 0; right: 0; display: grid; gap: 0; padding: 8px 16px 20px; background: var(--bg); border-bottom: 1px solid var(--line); transform: translateY(-8px); opacity: 0; pointer-events: none; transition: opacity 200ms var(--ease-out), transform 300ms var(--ease-drawer); }
  .menu-open .nav { opacity: 1; transform: none; pointer-events: auto; }
  .nav a { font-size: 24px; font-weight: 700; color: var(--ink); padding: 10px 0; }
  .wrap, .wrap-narrow { width: calc(100% - 32px); }
  .hero { height: auto; min-height: 0; display: flex; flex-direction: column; background: linear-gradient(180deg, #b8c6d2 0%, #dfe6ea 300px, #e9eef1 420px, var(--bg) 520px); padding-top: var(--head-h); }
  .hero-head { position: relative; top: auto; left: auto; width: auto; padding: 22px 16px 0; order: 0; }
  .hero h1 { font-size: 31px; }
  .hero .lead { font-size: 15px; margin-top: 10px; }
  .build-steps { margin-top: 12px; }
  .build-steps li { font-size: 11px; padding: 6px 8px; }
  .stage3d { position: relative; inset: auto; height: 290px; order: 1; }
  .config { position: relative; top: auto; right: auto; width: auto; max-height: none; margin: 0 16px 24px; order: 2; background: var(--paper); backdrop-filter: none; -webkit-backdrop-filter: none; box-shadow: 0 14px 40px rgba(30, 45, 60, .1); }
  .sec { padding: 72px 0; }
  .sec-head { margin-bottom: 32px; }
  .types, .prices, .cases, .guar, .city-card, .foot-cities { grid-template-columns: 1fr; }
  .case:first-child { grid-row: auto; }
  .case:first-child .case-pic { min-height: 0; aspect-ratio: 4 / 3; }
  .steps { grid-template-columns: 1fr; gap: 0; }
  .steps-pic { top: calc(var(--head-h) + 8px); z-index: 2; padding: 10px; box-shadow: 0 10px 30px rgba(23, 27, 31, .08); }
  .steps-pic svg { max-height: 190px; }
  .steps-list li { min-height: 0; padding: 28px 0 28px 22px; }
  .steps-list li::before { top: 34px; }
  .crew { min-height: 0; display: flex; flex-direction: column; }
  .crew-img { position: relative; height: 62vw; min-height: 260px; order: 1; object-position: 30% 70%; }
  .crew::before { display: none; }
  .crew-text { order: 0; color: var(--ink); width: auto; padding: 72px 16px 24px; background: var(--bg); }
  .crew-text h2, .crew-text p:not(.eyebrow) { text-shadow: none; }
  .crew .eyebrow-light { color: var(--steel); }
  .plates { position: relative; order: 2; right: auto; top: auto; justify-items: stretch; padding: 16px; background: var(--bg); }
  .plate { max-width: none; background: var(--paper); }
  .plate-tilt { transform: none; }
  .boss { flex-direction: column; align-items: flex-start; padding: 24px; }
  .order { grid-template-columns: 1fr; gap: 32px; }
  .order-form { padding: 22px 18px; }
  .foot-links a { font-size: 19px; }
  .cookie { left: 12px; right: 12px; bottom: 12px; max-width: none; }
  .sec-head-row { align-items: flex-start; }
  .city-tabs { width: 100%; }
  .city-tabs button { flex: 1; padding: 10px 6px; font-size: 14px; }
}
@media (max-width: 480px) {
  .cfg-total { flex-wrap: wrap; }
  .demo-note { text-align: left; max-width: none; }
  .total-sum { font-size: 28px; }
}
@media (max-width: 380px) {
  .cfg-split { grid-template-columns: 1fr; }
  .total-sum { font-size: 26px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 1ms !important; transition-duration: 1ms !important; }
  .case-pic .clip { clip-path: none; }
}

@media print {
  body > *:not(.print-sheet) { display: none !important; }
  .print-sheet { display: block; color: #000; font: 12pt/1.5 var(--font); padding: 0; }
  .print-sheet h1 { font-size: 22pt; margin-bottom: 6pt; }
  .print-sheet table { width: 100%; border-collapse: collapse; margin: 14pt 0; }
  .print-sheet td { padding: 6pt 0; border-bottom: 1px solid #ccc; }
  .print-sheet td:last-child { text-align: right; }
}