/* SAYF calculator landing. Dark architectural theme, single accent = SAYF brand orange. Sharp 2px radius everywhere. */
:root{
  --bg:#0d0e0f;
  --bg-2:#131517;
  --surface:#181a1d;
  --line:rgba(236,233,228,.10);
  --line-2:rgba(236,233,228,.18);
  --text:#ece9e4;
  --muted:#a3a09a;
  --dim:#75736e;
  --accent:#f37021;
  --accent-ink:#1a0d04;
  --r:2px;
  --ease:cubic-bezier(.16,1,.3,1);
  --wrap:1320px;
  --pad:clamp(16px,4vw,48px);
  color-scheme:dark;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--text);font:400 16px/1.6 Manrope,system-ui,sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--pad)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* type */
.h2{font-weight:300;font-size:clamp(32px,4.4vw,60px);line-height:1.05;letter-spacing:-.03em;max-width:16ch}
.lead{color:var(--muted);font-size:clamp(16px,1.3vw,18px);max-width:58ch;margin-top:20px}
.eyebrow{font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--accent);margin-bottom:18px;font-weight:600}
em{font-style:normal;color:var(--accent)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:56px;padding:0 30px;border-radius:var(--r);font-weight:600;font-size:15px;letter-spacing:.01em;white-space:nowrap;transition:transform .25s var(--ease),background .25s,border-color .25s,color .25s}
.btn:active{transform:translateY(1px) scale(.99)}
.btn--accent{background:var(--accent);color:var(--accent-ink)}
.btn--accent:hover{background:#ff8340}
.btn--ghost{border:1px solid var(--line-2);color:var(--text)}
.btn--ghost:hover{border-color:var(--text)}
.btn--wide{width:100%}
.btn[disabled]{opacity:.6;pointer-events:none}

/* nav */
.nav{position:fixed;inset:0 0 auto;z-index:20;transition:background .3s,border-color .3s;border-bottom:1px solid transparent}
.nav.is-solid{background:rgba(13,14,15,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-color:var(--line)}
.nav__in{height:72px;display:flex;align-items:center;gap:40px}
.nav__logo img{height:34px;width:auto}
.nav__links{display:flex;gap:30px;font-size:14px;color:var(--muted)}
.nav__links a:hover{color:var(--text)}
.nav__right{margin-left:auto;display:flex;align-items:center;gap:24px}
.nav__phone{font-size:14px;font-weight:600}
.lang{display:flex;border:1px solid var(--line-2);border-radius:var(--r)}
.lang button{font-size:12px;font-weight:600;padding:6px 10px;color:var(--dim)}
.lang button[aria-pressed="true"]{color:var(--text);background:var(--surface)}

/* hero */
.hero{padding-top:72px;min-height:100dvh;display:flex;align-items:center}
.hero__grid{display:grid;grid-template-columns:5fr 6fr;gap:clamp(32px,5vw,80px);align-items:center;padding-top:clamp(24px,5vh,64px);padding-bottom:clamp(40px,7vh,88px);width:100%}
.hero__title{font-weight:300;font-size:clamp(38px,4.5vw,66px);line-height:1.02;letter-spacing:-.035em}
.hero__title em{display:block;font-weight:500;white-space:nowrap}
.hero__sub{color:var(--muted);font-size:clamp(16px,1.35vw,19px);max-width:42ch;margin-top:28px}
.hero__ctas{display:flex;gap:14px;flex-wrap:wrap;margin-top:40px}
.hero__media{position:relative;aspect-ratio:4/5;max-height:78dvh;overflow:hidden;border-radius:var(--r)}
.hero__media img{width:100%;height:100%;object-fit:cover;transform:scale(1.08);animation:heroIn 1.8s var(--ease) .1s forwards}
@keyframes heroIn{to{transform:scale(1)}}

/* stats */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:36px 28px 34px 0;display:flex;flex-direction:column;gap:6px}
.stat+.stat{padding-left:28px;border-left:1px solid var(--line)}
.stat b{font-weight:300;font-size:clamp(30px,3.2vw,44px);letter-spacing:-.03em;line-height:1}
.stat span{color:var(--muted);font-size:14px;max-width:22ch}

/* calculator */
.calc{padding:clamp(80px,12vw,160px) 0}
.calc__grid{display:grid;grid-template-columns:7fr 5fr;gap:clamp(24px,4vw,64px);margin-top:56px;align-items:start}
.calc__form{display:flex;flex-direction:column;gap:40px}
.field{border:0;display:flex;flex-direction:column;gap:16px}
.field legend,.legend{font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:16px}
.field .legend{margin:0}
.field__row{display:flex;justify-content:space-between;align-items:end;gap:16px}
.seg{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line-2);border-radius:var(--r)}
.seg label{position:relative}
.seg label+label{border-left:1px solid var(--line-2)}
.seg input{position:absolute;opacity:0;inset:0;cursor:pointer}
.seg span{display:flex;align-items:center;justify-content:center;height:56px;font-weight:500;color:var(--muted);transition:background .25s,color .25s}
.seg input:checked+span{background:var(--text);color:var(--bg)}
.seg input:focus-visible+span{outline:2px solid var(--accent);outline-offset:-2px}
.seg--sm span{height:46px;font-size:14px}
.area-num{display:flex;align-items:baseline;gap:8px;border-bottom:1px solid var(--line-2)}
.area-num input{width:4.2ch;background:none;border:0;color:var(--text);font:300 clamp(40px,4vw,56px)/1 Manrope,sans-serif;letter-spacing:-.03em;text-align:right;-moz-appearance:textfield}
.area-num input::-webkit-outer-spin-button,.area-num input::-webkit-inner-spin-button{-webkit-appearance:none}
.area-num input:focus{outline:none}
.area-num:focus-within{border-color:var(--accent)}
.area-num span{color:var(--muted);font-size:18px}
.range{-webkit-appearance:none;appearance:none;width:100%;height:28px;background:transparent;cursor:pointer;--p:23%}
.range::-webkit-slider-runnable-track{height:2px;background:linear-gradient(90deg,var(--accent) var(--p),var(--line-2) var(--p))}
.range::-moz-range-track{height:2px;background:linear-gradient(90deg,var(--accent) var(--p),var(--line-2) var(--p))}
.range::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;margin-top:-10px;border-radius:50%;background:var(--text);border:5px solid var(--bg);box-shadow:0 0 0 1px var(--accent);transition:transform .2s var(--ease)}
.range::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--text);border:4px solid var(--bg);box-shadow:0 0 0 1px var(--accent)}
.range:active::-webkit-slider-thumb{transform:scale(1.15)}
.range__scale{display:flex;justify-content:space-between;font-size:12px;color:var(--dim);margin-top:-4px}
.tiers{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.tier{position:relative;cursor:pointer}
.tier input{position:absolute;opacity:0}
.tier__body{display:flex;flex-direction:column;gap:12px;height:100%;padding:24px;border:1px solid var(--line-2);border-radius:var(--r);transition:border-color .25s,background .25s}
.tier__head{display:flex;justify-content:space-between;align-items:baseline;gap:8px}
.tier__head b{font-weight:600;letter-spacing:.12em;font-size:14px}
.tier__head i{font-style:normal;font-size:20px;font-weight:300}
.tier__txt{color:var(--muted);font-size:14px;line-height:1.55}
.tier input:checked+.tier__body{border-color:var(--accent);background:linear-gradient(180deg,rgba(243,112,33,.08),rgba(243,112,33,0) 70%)}
.tier input:focus-visible+.tier__body{outline:2px solid var(--accent);outline-offset:2px}
.check{display:flex;gap:16px;align-items:flex-start;padding:18px 0;border-top:1px solid var(--line);cursor:pointer}
.check:last-child{border-bottom:1px solid var(--line)}
.check input{appearance:none;-webkit-appearance:none;flex:none;width:22px;height:22px;margin-top:2px;border:1px solid var(--line-2);border-radius:var(--r);display:grid;place-content:center;cursor:pointer;transition:background .2s,border-color .2s}
.check input::after{content:"";width:10px;height:6px;border:2px solid var(--accent-ink);border-top:0;border-right:0;transform:rotate(-45deg) translate(1px,-1px) scale(0);transition:transform .2s var(--ease)}
.check input:checked{background:var(--accent);border-color:var(--accent)}
.check input:checked::after{transform:rotate(-45deg) translate(1px,-1px) scale(1)}
.check b{display:block;font-weight:500}
.check small{display:block;color:var(--muted);font-size:14px;margin-top:2px}
.check.is-off{opacity:.4;pointer-events:none}

.result{position:sticky;top:96px}
.result__in{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:clamp(28px,3vw,40px)}
.result__label{font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:600}
.result__sum{font-weight:300;font-size:clamp(48px,5.4vw,80px);letter-spacing:-.04em;line-height:1;margin-top:18px;font-variant-numeric:tabular-nums}
.result__meta{color:var(--muted);margin-top:10px}
.result__lines{list-style:none;margin:28px 0;border-top:1px solid var(--line)}
.result__lines li{display:flex;justify-content:space-between;gap:16px;padding:14px 0;font-size:15px;border-bottom:1px solid var(--line)}
.result__lines li span:first-child{color:var(--muted)}
.result__lines li span:last-child{font-variant-numeric:tabular-nums}
.result__note{color:var(--text);font-size:14px;padding:14px 16px;border-left:2px solid var(--accent);background:rgba(243,112,33,.06);margin-bottom:24px}
.result__fine{color:var(--dim);font-size:13px;margin-top:14px;text-align:center}

/* work rail */
.work{padding:clamp(40px,6vw,80px) 0 clamp(80px,12vw,160px)}
.work__head{display:flex;justify-content:space-between;align-items:end;gap:24px}
.work__nav{display:flex;gap:8px}
.arrow{width:52px;height:52px;border:1px solid var(--line-2);border-radius:var(--r);display:grid;place-content:center;transition:border-color .2s}
.arrow:hover{border-color:var(--text)}
.arrow svg,.modal__x svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5}
.rail{display:grid;grid-auto-flow:column;grid-auto-columns:clamp(280px,38vw,560px);gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding:48px max(var(--pad),calc((100vw - var(--wrap))/2 + var(--pad))) 8px;scrollbar-width:none;cursor:grab}
.rail::-webkit-scrollbar{display:none}
.rail.is-drag{cursor:grabbing;scroll-snap-type:none}
.card{scroll-snap-align:start;display:flex;flex-direction:column;gap:16px}
.card__img{aspect-ratio:4/5;overflow:hidden;border-radius:var(--r);background:var(--bg-2)}
.card__img img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease);pointer-events:none;user-select:none}
.card:hover .card__img img{transform:scale(1.04)}
.card__cap{display:flex;justify-content:space-between;gap:12px}
.card__cap b{font-weight:500;font-size:18px}
.card__cap span{color:var(--dim);font-size:14px}

/* 1:1 */
.scale{position:relative;min-height:88dvh;display:flex;align-items:flex-end;overflow:hidden}
.scale__bg,.final__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.scale::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,14,15,.15) 0%,rgba(13,14,15,.55) 50%,rgba(13,14,15,.96) 100%)}
.scale__in{position:relative;z-index:1;padding-bottom:clamp(56px,9vw,120px);width:100%}
.scale .lead{color:#d2cfc9}

/* method */
.method{padding:clamp(80px,12vw,160px) 0}
.method__grid{display:grid;grid-template-columns:repeat(3,1fr);margin-top:56px;border-top:1px solid var(--line)}
.mcol{padding:32px 32px 0 0}
.mcol+.mcol{padding-left:32px;border-left:1px solid var(--line)}
.mcol h3{font-weight:500;font-size:22px;letter-spacing:-.01em}
.mcol p{color:var(--muted);margin-top:12px;font-size:15px}
.method__img{margin-top:64px;aspect-ratio:21/9;overflow:hidden;border-radius:var(--r)}
.method__img img{width:100%;height:100%;object-fit:cover}

/* quotes */
.quotes{padding:0 0 clamp(80px,12vw,160px)}
.quotes__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:clamp(24px,3vw,48px);align-items:start}
.q p{font-weight:300;font-size:18px;line-height:1.5}
.q--big p{font-size:clamp(22px,2vw,28px);letter-spacing:-.01em;line-height:1.35}
.q footer{margin-top:20px;font-weight:600;font-size:15px}
.q footer span{display:block;color:var(--dim);font-weight:400;font-size:14px}

/* final */
.final{position:relative;min-height:72dvh;display:flex;align-items:center;overflow:hidden}
.final::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,14,15,.94) 0%,rgba(13,14,15,.7) 45%,rgba(13,14,15,.25) 100%)}
.final__in{position:relative;z-index:1}
.final .btn{margin-top:36px}
.final .lead{color:#d2cfc9}

/* footer */
.foot{border-top:1px solid var(--line);padding:40px 0}
.foot__in{display:flex;align-items:center;gap:32px;flex-wrap:wrap}
.foot__in img{height:30px;width:auto}
.foot__c{display:flex;gap:24px;font-size:14px}
.foot__c a:hover{color:var(--accent)}
.foot__s{margin-left:auto;color:var(--dim);font-size:13px}

/* modal */
.modal{margin:auto;border:0;background:transparent;color:var(--text);max-width:480px;width:calc(100% - 32px)}
.modal::backdrop{background:rgba(5,5,6,.72);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.modal[open]{animation:mIn .45s var(--ease)}
@keyframes mIn{from{opacity:0;transform:translateY(16px)}}
.modal__in{position:relative;background:var(--surface);border:1px solid var(--line-2);border-radius:var(--r);padding:clamp(28px,4vw,40px)}
.modal__x{position:absolute;top:14px;right:14px;width:40px;height:40px;display:grid;place-content:center;color:var(--muted)}
.modal h3{font-weight:400;font-size:28px;letter-spacing:-.02em}
.modal__sum{color:var(--accent);font-size:15px;font-weight:600;margin-top:8px}
.modal__txt{color:var(--muted);font-size:15px;margin:12px 0 24px}
.modal__fine{color:var(--dim);font-size:13px;text-align:center;margin-top:14px}
.inp{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;border:0}
.inp label,.inp legend{font-size:13px;color:var(--muted);font-weight:500;margin-bottom:8px}
.inp label{margin:0}
.inp input{height:54px;background:var(--bg);border:1px solid var(--line-2);border-radius:var(--r);color:var(--text);padding:0 16px;font:500 16px Manrope,sans-serif}
.inp input:focus{outline:none;border-color:var(--accent)}
.inp input[aria-invalid="true"]{border-color:#ff6b5a}
.inp__err{color:#ff8a7c;font-size:13px}

/* reveal */
.reveal{opacity:0;transform:translateY(28px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .hero__media img{animation:none;transform:none}
  .card__img img,.btn,.modal[open]{transition:none;animation:none}
}

/* tablet */
@media (max-width:1023px){
  .nav__links{display:none}
  .calc__grid{grid-template-columns:1fr}
  .result{position:static}
  .quotes__grid{grid-template-columns:1fr 1fr}
  .q--big{grid-column:1/-1}
}
/* mobile */
@media (max-width:767px){
  .nav__in{height:64px;gap:16px}
  .nav__phone{display:none}
  .nav__logo img{height:26px}
  .hero{padding-top:64px;min-height:auto}
  .hero__grid{grid-template-columns:1fr;gap:28px}
  .hero__media{aspect-ratio:4/3;order:-1;margin:0 calc(var(--pad) * -1)}
  .hero__ctas .btn{flex:1 1 100%}
  .stats__grid{grid-template-columns:1fr 1fr}
  .stat,.stat+.stat{padding:24px 0;border-left:0}
  .stat:nth-child(even){padding-left:20px;border-left:1px solid var(--line)}
  .stat:nth-child(n+3){border-top:1px solid var(--line)}
  .tiers{grid-template-columns:1fr}
  .seg span{height:52px;font-size:15px}
  .method__grid{grid-template-columns:1fr}
  .mcol,.mcol+.mcol{padding:28px 0;border-left:0}
  .mcol+.mcol{border-top:1px solid var(--line)}
  .method__img{aspect-ratio:4/3}
  .quotes__grid{grid-template-columns:1fr}
  .work__nav{display:none}
  .rail{grid-auto-columns:78vw;padding-top:32px}
  .foot__s{margin-left:0}
}

[hidden]{display:none!important}

/* 09.10.2026: пометка для показа Сардору — пункт ещё не согласован */
.pending{font-style:normal;font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);border:1px solid var(--accent);border-radius:999px;padding:2px 8px;margin-left:6px;vertical-align:2px;white-space:nowrap}
.result__lines li span:last-child{white-space:nowrap;font-variant-numeric:tabular-nums}