/* ─────────────────────────────────────────────────────────────
   СК Титан — cktitan.ru
   ───────────────────────────────────────────────────────────── */

/* ── шрифты ───────────────────────────────────────────────── */
@font-face{font-family:'Golos Text';font-style:normal;font-weight:400 900;font-display:swap;src:url(./fonts/golos-cyrillic-ext-400_900.woff2) format('woff2');unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}
@font-face{font-family:'Golos Text';font-style:normal;font-weight:400 900;font-display:swap;src:url(./fonts/golos-cyrillic-400_900.woff2) format('woff2');unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'Golos Text';font-style:normal;font-weight:400 900;font-display:swap;src:url(./fonts/golos-latin-ext-400_900.woff2) format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Golos Text';font-style:normal;font-weight:400 900;font-display:swap;src:url(./fonts/golos-latin-400_900.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:400;font-display:swap;src:url(./fonts/jbmono-cyrillic-400.woff2) format('woff2');unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:400;font-display:swap;src:url(./fonts/jbmono-latin-400.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:500;font-display:swap;src:url(./fonts/jbmono-cyrillic-500.woff2) format('woff2');unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:500;font-display:swap;src:url(./fonts/jbmono-latin-500.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}


/* ── настраиваемые свойства (анимируются, в отличие от обычных) ── */
@property --glow { syntax:'<percentage>'; inherits:false; initial-value:0% }
@property --tilt { syntax:'<angle>';      inherits:false; initial-value:0deg }

/* ── токены ───────────────────────────────────────────────── */
:root{
  color-scheme:dark;

  --ink:   oklch(14% 0.006 250);
  --ink-2: oklch(17% 0.007 250);
  --ink-3: oklch(21% 0.008 250);
  --fg:    oklch(95% 0.004 250);
  --fg-2:  oklch(74% 0.010 250);
  --fg-3:  oklch(56% 0.012 250);
  --hot:   oklch(68% 0.205 42);

  --line:   color-mix(in oklab, var(--fg) 10%, transparent);
  --line-2: color-mix(in oklab, var(--fg) 18%, transparent);
  --hot-dim:color-mix(in oklab, var(--hot) 16%, transparent);

  --ff:'Golos Text',ui-sans-serif,system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --ff-m:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;

  --wrap:1320px;
  --pad:clamp(20px,4.5vw,64px);
  --sec-y:clamp(72px,10vw,148px);
  --r:2px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

html{background:var(--ink)}
body{
  margin:0;background:transparent;color:var(--fg);
  font-family:var(--ff);font-size:17px;line-height:1.6;
  font-optical-sizing:auto;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,video{display:block;max-width:100%}
a{color:inherit}
:where(section,footer){scroll-margin-top:88px}

.wrap{width:min(100% - var(--pad)*2,var(--wrap));margin-inline:auto}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.skip{position:absolute;left:-9999px;top:0;z-index:200;background:var(--hot);color:#0b0b0b;padding:10px 16px}
.skip:focus{left:12px;top:12px}
:where(a,button,[tabindex]):focus-visible{outline:2px solid var(--hot);outline-offset:3px;border-radius:var(--r)}

/* ── полоса прочтения ─────────────────────────────────────── */
.progress{position:fixed;inset:0 0 auto 0;height:2px;z-index:120;background:var(--hot);transform-origin:0 50%;transform:scaleX(0)}
@supports (animation-timeline:scroll()){
  .progress{animation:grow linear both;animation-timeline:scroll(root block)}
}
@keyframes grow{from{transform:scaleX(0)}to{transform:scaleX(1)}}

/* ── типографика ──────────────────────────────────────────── */
.h2{font-size:clamp(27px,3.5vw,45px);font-weight:800;letter-spacing:-.035em;line-height:1.1;margin:0;text-wrap:balance}
.eyebrow{font-family:var(--ff-m);font-size:12px;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--fg-3);margin:0 0 16px}
.eyebrow--accent{color:var(--hot)}
.sec__intro{color:var(--fg-2);max-width:62ch;margin:22px 0 0;font-size:17px;text-wrap:pretty}
p{text-wrap:pretty}

/* ── кнопки ───────────────────────────────────────────────── */
.btn{
  --glow:0%;
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font:inherit;font-weight:600;font-size:15px;line-height:1;cursor:pointer;
  padding:16px 26px;border:1px solid transparent;border-radius:var(--r);
  background:
    radial-gradient(120px 60px at var(--mx,50%) var(--my,50%), color-mix(in oklab,#fff 22%,transparent), transparent 70%),
    var(--hot);
  color:#0b0b0b;text-decoration:none;
  transition:filter .25s var(--ease), transform .25s var(--ease);
}
.btn:hover{filter:brightness(1.08)}
.btn:active{transform:translateY(1px)}
.btn--ghost{background:transparent;color:var(--fg);border-color:var(--line-2);backdrop-filter:blur(6px)}
.btn--ghost:hover{border-color:var(--fg);background:color-mix(in oklab,var(--fg) 6%,transparent)}
.btn--sm{padding:11px 17px;font-size:14px}
.btn--full{width:100%}
.link{background:none;border:0;padding:0;font:inherit;color:var(--hot);cursor:pointer;text-underline-offset:3px;text-decoration:underline}

/* ── шапка ────────────────────────────────────────────────── */
.hdr{position:sticky;top:0;z-index:100;transition:background .3s,border-color .3s,backdrop-filter .3s;border-bottom:1px solid transparent}
.hdr.is-stuck{background:color-mix(in oklab,var(--ink) 82%,transparent);backdrop-filter:blur(14px) saturate(1.4);border-bottom-color:var(--line)}
.hdr__in{width:min(100% - var(--pad)*2,var(--wrap));margin-inline:auto;display:flex;align-items:center;gap:28px;height:74px}
.hdr__logo{display:flex;align-items:center;gap:12px;text-decoration:none;flex:none}
.mark{width:92px;height:auto}
.hdr__descr{font-family:var(--ff-m);font-size:9px;line-height:1.25;letter-spacing:.13em;text-transform:uppercase;color:var(--fg-3)}
.nav{display:flex;gap:26px;margin-inline:auto;font-size:15px}
.nav a{text-decoration:none;color:var(--fg-2);transition:color .2s;position:relative}
.nav a::after{content:'';position:absolute;left:0;right:100%;bottom:-6px;height:1px;background:var(--hot);transition:right .3s var(--ease)}
.nav a:hover{color:var(--fg)}
.nav a:hover::after{right:0}
.hdr__act{display:flex;align-items:center;gap:16px;flex:none}
.hdr__tel{font-family:var(--ff-m);font-size:14px;text-decoration:none;white-space:nowrap}
.burger{display:none;width:40px;height:40px;background:none;border:1px solid var(--line-2);border-radius:var(--r);cursor:pointer;position:relative}
.burger span{position:absolute;left:11px;right:11px;height:1.5px;background:var(--fg);transition:.3s var(--ease)}
.burger span:first-child{top:15px}
.burger span:last-child{bottom:15px}
.hdr.is-open .burger span:first-child{top:19px;rotate:45deg}
.hdr.is-open .burger span:last-child{bottom:19px;rotate:-45deg}

/* ── герой ────────────────────────────────────────────────── */
.hero{position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;padding-top:96px;overflow:clip}
.hero__media{position:absolute;inset:0;z-index:-1}
.hero__video,.hero__media img{width:100%;height:100%;object-fit:cover}
.hero__scrim{position:absolute;inset:0;background:
  linear-gradient(180deg,color-mix(in oklab,var(--ink) 78%,transparent) 0%,color-mix(in oklab,var(--ink) 34%,transparent) 42%,var(--ink) 96%),
  radial-gradient(120% 80% at 12% 88%,color-mix(in oklab,var(--ink) 76%,transparent),transparent 62%)}
@supports (animation-timeline:view()){
  @media (prefers-reduced-motion:no-preference){
    .hero__media{animation:heroOut linear both;animation-timeline:scroll(root block);animation-range:0 100vh}
  }
}
@keyframes heroOut{to{scale:1.08;opacity:.45}}

.hero__in{padding-bottom:clamp(40px,6vw,72px)}
.kicker{font-family:var(--ff-m);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--fg-2);margin:0 0 22px}
.hero__h{font-size:clamp(32px,5.2vw,70px);font-weight:800;line-height:1.03;letter-spacing:-.045em;margin:0;max-width:19ch}
.hero__h em{font-style:normal;color:var(--hot)}
.hero__h .line{display:block;overflow:hidden}
.hero__h .line>*{display:block}
@media (prefers-reduced-motion:no-preference){
  .hero__h .line>*{animation:up .9s var(--ease) both}
  .hero__h .line:nth-child(2)>*{animation-delay:.08s}
  .hero__h .line:nth-child(3)>*{animation-delay:.16s}
}
@keyframes up{from{transform:translateY(105%)}to{transform:none}}

.hero__lead{max-width:64ch;color:var(--fg-2);margin:20px 0 0;font-size:clamp(15px,1.2vw,18px)}
.hero__cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero__facts{
  list-style:none;margin:0 auto;padding:22px 0 26px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  border-top:1px solid var(--line);
}
.hero__facts b{display:block;font-family:var(--ff-m);font-size:15px;font-weight:500;letter-spacing:.04em;color:var(--hot);margin-bottom:6px}
.hero__facts span{display:block;font-size:13px;line-height:1.45;color:var(--fg-2)}

/* ── бегущая строка ───────────────────────────────────────── */
.marquee{border-block:1px solid var(--line);overflow:hidden;padding:20px 0;background:var(--ink-2);
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee__track{display:flex;width:max-content;gap:0}
@media (prefers-reduced-motion:no-preference){.marquee__track{animation:slide 46s linear infinite}}
.marquee__row{display:flex;align-items:center;gap:34px;padding-right:34px;font-family:var(--ff-m);font-size:14px;color:var(--fg-2);white-space:nowrap}
.marquee__row i{width:4px;height:4px;background:var(--hot);border-radius:50%;flex:none}
@keyframes slide{to{transform:translateX(-50%)}}

/* ── секции ───────────────────────────────────────────────── */
.sec{padding-block:var(--sec-y);content-visibility:auto;contain-intrinsic-size:auto 900px}
.sec--tight{padding-block:clamp(56px,7vw,104px)}
.sec--alt{background:var(--ink-2);border-block:1px solid var(--line)}
.sec__head{margin-bottom:clamp(34px,4.5vw,60px)}

/* ── направления ──────────────────────────────────────────── */
.svc{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.svc__card{background:var(--ink);display:flex;flex-direction:column;container-type:inline-size}
.svc__card--wide{grid-column:span 2;flex-direction:row}
.svc__card--wide .svc__media{flex:1 1 46%}
.svc__card--wide .svc__body{flex:1 1 54%}
.svc__media{position:relative;aspect-ratio:16/10;overflow:hidden}
.svc__card--wide .svc__media{aspect-ratio:auto}
.svc__media :is(img,video){width:100%;height:100%;object-fit:cover;filter:saturate(.7) contrast(1.05);transition:scale .7s var(--ease),filter .5s}
.svc__card:hover .svc__media :is(img,video){scale:1.04;filter:saturate(.95) contrast(1.05)}
.svc__body{padding:clamp(22px,2.4vw,34px);display:flex;flex-direction:column;gap:12px}
.svc__body h3{font-size:clamp(19px,1.7vw,25px);font-weight:700;letter-spacing:-.02em;line-height:1.15;margin:0}
.svc__body p{margin:0;color:var(--fg-2);font-size:15px}
.svc__card--accent{background:var(--ink-3);grid-column:span 3}
.svc__card--accent .svc__body{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:8px 40px;align-items:start}
.svc__card--accent .eyebrow{grid-column:1;margin:0}
.svc__card--accent h3{grid-column:1;grid-row:2}
.svc__card--accent p{grid-column:2;grid-row:1/4;font-size:16px}
.svc__card--accent .tags{grid-column:1;grid-row:3;margin-top:14px}
.tags{list-style:none;display:flex;flex-wrap:wrap;gap:7px;margin:6px 0 0;padding:0}
.tags li{font-family:var(--ff-m);font-size:11.5px;letter-spacing:.05em;color:var(--fg-2);border:1px solid var(--line-2);padding:5px 10px;border-radius:100px}

/* ── сильные стороны ──────────────────────────────────────── */
.why{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.why li{background:var(--ink);padding:clamp(24px,2.6vw,36px);position:relative;overflow:hidden}
.why li::before{content:'';position:absolute;inset:auto 0 0 0;height:2px;background:var(--hot);transform:scaleX(0);transform-origin:0 50%;transition:transform .5s var(--ease)}
.why li:hover::before{transform:scaleX(1)}
.why b{display:block;font-size:clamp(17px,1.5vw,21px);font-weight:700;letter-spacing:-.02em;margin-bottom:10px}
.why span{display:block;color:var(--fg-2);font-size:15px}

/* ── фильтр объектов ──────────────────────────────────────── */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 22px}
.filters__b{
  font:inherit;font-size:13.5px;color:var(--fg-2);cursor:pointer;
  padding:9px 16px;border-radius:100px;background:none;border:1px solid var(--line-2);
  transition:color .25s,border-color .25s,background .25s;
}
.filters__b:hover{color:var(--fg);border-color:var(--fg-3)}
.filters__b.is-on{color:#0b0b0b;background:var(--hot);border-color:var(--hot)}
.case[hidden]{display:none}

/* перекладка сетки при фильтрации — через View Transitions */
@media (prefers-reduced-motion:no-preference){
  ::view-transition-group(*){animation-duration:.42s;animation-timing-function:var(--ease)}
}

/* лёгкий параллакс кадра при прокрутке: двигаем точку кадрирования,
   а не transform — иначе перебило бы приближение по наведению */
@supports (animation-timeline:view()){
  @media (prefers-reduced-motion:no-preference){
    .case__media :is(img,video),.svc__media :is(img,video){
      animation:par linear both;animation-timeline:view();animation-range:cover 0% cover 100%;
    }
  }
}
@keyframes par{from{object-position:50% 38%}to{object-position:50% 62%}}

/* документ разворачивается из миниатюры одним общим кадром */
@media (prefers-reduced-motion:no-preference){
  ::view-transition-group(doc-img){animation-duration:.45s;animation-timing-function:var(--ease)}
  ::view-transition-old(doc-img),::view-transition-new(doc-img){mix-blend-mode:normal}
}

/* ── подложка страницы: инженерная сетка ──────────────────── */
body::before{
  content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:
    linear-gradient(to right, color-mix(in oklab,var(--fg) 4%,transparent) 1px,transparent 1px),
    linear-gradient(to bottom,color-mix(in oklab,var(--fg) 4%,transparent) 1px,transparent 1px),
    linear-gradient(to right, color-mix(in oklab,var(--fg) 7%,transparent) 1px,transparent 1px),
    linear-gradient(to bottom,color-mix(in oklab,var(--fg) 7%,transparent) 1px,transparent 1px);
  background-size:28px 28px,28px 28px,140px 140px,140px 140px;
  mask-image:radial-gradient(120% 80% at 50% 0%,#000 10%,transparent 78%);
}


/* ── объекты ──────────────────────────────────────────────── */
.cases{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.case{background:var(--ink);display:flex;flex-direction:column;grid-column:span 2;container-type:inline-size;
  transition:background .35s}
.case:hover{background:var(--ink-2)}
.case--lead{grid-column:span 4;flex-direction:row}
.case--lead .case__media{flex:1 1 52%;aspect-ratio:auto;min-height:340px}
.case--lead .case__body{flex:1 1 48%;justify-content:center}
.case__media{aspect-ratio:16/10;overflow:hidden}
.case__media :is(img,video){width:100%;height:100%;object-fit:cover;filter:saturate(.68) contrast(1.06);transition:scale .8s var(--ease),filter .5s}
.case:hover .case__media :is(img,video){scale:1.05;filter:saturate(.95)}
.case__body{padding:clamp(22px,2.4vw,34px);display:flex;flex-direction:column;gap:10px}
.case__cust{font-family:var(--ff-m);font-size:12px;letter-spacing:.05em;color:var(--hot);margin:0}
.case__h{font-size:clamp(17px,1.5vw,22px);font-weight:700;letter-spacing:-.02em;line-height:1.2;margin:0;text-wrap:balance}
.case--lead .case__h{font-size:clamp(22px,2.4vw,34px)}
.case__note{margin:0;color:var(--fg-2);font-size:15px}
/* карточка сама решает, как ей верстаться: широкой (в том числе после фильтра)
   даём воздух и более длинную строку — запрос к контейнеру, а не к экрану */
@container (min-width:560px){
  .case__body{gap:12px}
  .case__note{font-size:16px;max-width:56ch}
}
.chips{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:8px 0 0;padding:0}
.chips li{font-family:var(--ff-m);font-size:11px;letter-spacing:.05em;text-transform:uppercase;color:var(--fg-3);
  border:1px solid var(--line);background:color-mix(in oklab,var(--fg) 4%,transparent);padding:5px 9px;border-radius:var(--r)}
.case--text .case__body{padding-block:clamp(28px,3vw,42px)}
.case--text .case__h{border-left:2px solid var(--hot);padding-left:14px;margin-left:-16px}
.cases__more{margin:26px 0 0;color:var(--fg-2);font-size:15px}

/* ── допуски ──────────────────────────────────────────────── */
.permits{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(32px,5vw,72px);align-items:start}
.permits__list{display:flex;flex-direction:column;gap:26px}
.permit{border-top:1px solid var(--line);padding-top:22px}
.permit h3{font-size:19px;font-weight:700;margin:0 0 8px;letter-spacing:-.02em}
.permit p{margin:0;color:var(--fg-2);font-size:15px}
.permits__docs{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.doc{background:none;border:1px solid var(--line);border-radius:var(--r);padding:0;cursor:pointer;overflow:hidden;display:flex;flex-direction:column;text-align:left;transition:border-color .3s,transform .3s var(--ease)}
.doc:hover{border-color:var(--hot);transform:translateY(-3px)}
.doc img{width:100%;aspect-ratio:3/4;object-fit:cover;object-position:top;background:#fff}
.doc span{display:block;font-family:var(--ff-m);font-size:11px;letter-spacing:.05em;color:var(--fg-2);padding:10px}

/* ── процесс ──────────────────────────────────────────────── */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);counter-reset:s}
.steps li{background:var(--ink);padding:clamp(24px,2.6vw,36px);display:flex;flex-direction:column;gap:10px}
.steps__n{font-family:var(--ff-m);font-size:12px;letter-spacing:.14em;color:var(--hot)}
.steps h3{font-size:19px;font-weight:700;margin:0;letter-spacing:-.02em}
.steps p{margin:0;color:var(--fg-2);font-size:15px}

/* ── контакты ─────────────────────────────────────────────── */
.contacts{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(32px,5vw,80px);align-items:start}
.contacts__lead{color:var(--fg-2);margin:22px 0 30px;max-width:52ch}
.contacts__list{margin:0;display:grid;gap:16px}
.contacts__list div{display:grid;grid-template-columns:130px 1fr;gap:16px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.contacts__list dt{font-family:var(--ff-m);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--fg-3)}
.contacts__list dd{margin:0;font-size:16px}
.contacts__list a{text-decoration:none;border-bottom:1px solid var(--line-2)}
.contacts__list a:hover{border-color:var(--hot);color:var(--hot)}
.req{margin-top:34px}
.req p{margin:0;color:var(--fg-3);font-size:13.5px;line-height:1.7;font-family:var(--ff-m)}
.contacts__ask{border:1px solid var(--line-2);background:var(--ink-3);padding:clamp(26px,3vw,40px);border-radius:var(--r);position:sticky;top:96px}
.contacts__ask h3{font-size:clamp(21px,2vw,28px);font-weight:700;letter-spacing:-.025em;margin:0 0 12px}
.contacts__ask p{color:var(--fg-2);font-size:15px;margin:0 0 20px}
.contacts__or{font-size:13.5px;color:var(--fg-3);text-align:center;margin:14px 0 0}
.contacts__or a{color:var(--fg-2)}

/* ── подвал ───────────────────────────────────────────────── */
.ftr{border-top:1px solid var(--line);padding-block:44px}
.ftr__in{display:flex;align-items:center;gap:28px;flex-wrap:wrap}
.ftr__logo{width:78px;height:auto;opacity:.6}
.ftr__copy{margin:0;color:var(--fg-3);font-size:13.5px;margin-right:auto}
.ftr__links{margin:0;font-family:var(--ff-m);font-size:13.5px;color:var(--fg-2)}
.ftr__links a{text-decoration:none}
.ftr__links a:hover{color:var(--hot)}

/* ── документ крупно ──────────────────────────────────────── */
.lb{border:0;padding:0;background:transparent;max-width:100vw;max-height:100dvh;width:100%;height:100%;color:var(--fg)}
.lb::backdrop{background:color-mix(in oklab,#000 92%,transparent);backdrop-filter:blur(4px)}
.lb[open]{display:grid;place-items:center;padding:5vh 4vw}
.lb__fig{margin:0;display:flex;flex-direction:column;gap:14px;align-items:center;max-height:90dvh}
.lb__fig img{max-height:82dvh;width:auto;object-fit:contain;background:#fff}
.lb__fig figcaption{font-family:var(--ff-m);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--fg-3)}
.lb__close{position:fixed;top:20px;right:22px;width:44px;height:44px;font-size:26px;line-height:1;
  background:none;border:1px solid var(--line-2);border-radius:var(--r);color:var(--fg);cursor:pointer}
.lb__close:hover{border-color:var(--hot);color:var(--hot)}
@media (prefers-reduced-motion:no-preference){
  .lb[open]{animation:fade .3s var(--ease)}
  .lb[open]::backdrop{animation:fade .3s var(--ease)}
}
@keyframes fade{from{opacity:0}to{opacity:1}}

/* ── чат ──────────────────────────────────────────────────── */
.chat-fab{
  position:fixed;right:clamp(14px,2.5vw,28px);bottom:clamp(14px,2.5vw,28px);z-index:95;
  display:flex;align-items:center;gap:10px;padding:14px 20px;cursor:pointer;
  font:inherit;font-size:15px;font-weight:600;color:#0b0b0b;
  background:var(--hot);border:0;border-radius:100px;
  box-shadow:0 10px 34px color-mix(in oklab,var(--hot) 34%,transparent);
  transition:transform .3s var(--ease),opacity .3s,visibility .3s;
}
.chat-fab:hover{transform:translateY(-2px)}
body.chat-on .chat-fab{opacity:0;visibility:hidden;transform:translateY(12px)}

/* окно чата — нативный popover: верхний слой без z-index-войн,
   появление и уход анимируются на чистом CSS через @starting-style
   и allow-discrete (display/overlay иначе переключаются мгновенно) */
.chat{
  position:fixed;inset:auto;margin:0;padding:0;
  right:clamp(14px,2.5vw,28px);bottom:clamp(14px,2.5vw,28px);
  width:min(410px,calc(100vw - 28px));height:min(620px,calc(100dvh - 40px));
  flex-direction:column;
  background:var(--ink-2);border:1px solid var(--line-2);border-radius:14px;overflow:hidden;
  color:var(--fg);box-shadow:0 30px 80px rgba(0,0,0,.6);
  opacity:1;translate:0 0;scale:1;
  transition:opacity .3s var(--ease),translate .3s var(--ease),scale .3s var(--ease),
             display .3s allow-discrete,overlay .3s allow-discrete;
}
.chat:popover-open{display:flex}
.chat:not(:popover-open){display:none;opacity:0;translate:0 16px;scale:.98}
@starting-style{.chat:popover-open{opacity:0;translate:0 16px;scale:.98}}
/* браузер без popover: правила с :popover-open он отбросит целиком,
   и окно осталось бы раскрытым — прячем его явно, открывает класс из скрипта */
@supports not selector(:popover-open){
  .chat{display:none}
  .chat.is-open{display:flex;opacity:1;translate:0 0;scale:1}
}

.chat__top{display:flex;align-items:center;gap:12px;padding:16px 16px 14px;border-bottom:1px solid var(--line);background:var(--ink-3)}
.chat__title{margin:0;font-weight:700;font-size:16px;letter-spacing:-.01em}
.chat__sub{margin:3px 0 0;font-size:12px;color:var(--fg-3);font-family:var(--ff-m)}
.chat__sub.is-off{color:var(--hot)}
.chat__x{margin-left:auto;width:34px;height:34px;font-size:22px;line-height:1;background:none;border:1px solid var(--line-2);border-radius:var(--r);color:var(--fg-2);cursor:pointer}
.chat__x:hover{color:var(--fg);border-color:var(--fg-3)}

.chat__body{flex:1;overflow-y:auto;overscroll-behavior:contain;padding:16px;display:flex;flex-direction:column;gap:12px;scrollbar-width:thin}
.msg{max-width:84%;font-size:15px;line-height:1.5}
.msg p{margin:0;white-space:pre-wrap}
.msg--bot{align-self:flex-start;background:var(--ink-3);border:1px solid var(--line);padding:12px 14px;border-radius:2px 12px 12px 12px}
.msg--me{align-self:flex-end;background:var(--hot);color:#0b0b0b;padding:12px 14px;border-radius:12px 2px 12px 12px}
.msg--sys{align-self:center;text-align:center;font-size:13px;color:var(--fg-3);max-width:100%}
.msg--sys a{color:var(--hot)}
.dots{display:inline-flex;gap:4px;align-items:center;height:20px}
.dots i{width:6px;height:6px;border-radius:50%;background:var(--fg-3);animation:blink 1.2s infinite}
.dots i:nth-child(2){animation-delay:.2s}
.dots i:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,60%,100%{opacity:.25}30%{opacity:1}}

.chat__hints{display:flex;gap:7px;flex-wrap:wrap;padding:0 16px 12px}
.chat__hints button{font:inherit;font-size:12.5px;color:var(--fg-2);background:none;border:1px solid var(--line-2);
  border-radius:100px;padding:7px 12px;cursor:pointer;transition:.2s}
.chat__hints button:hover{border-color:var(--hot);color:var(--fg)}
.chat__hints:empty,.chat__hints.is-hidden{display:none}

.chat__form{display:flex;gap:8px;align-items:flex-end;padding:12px 16px;border-top:1px solid var(--line);background:var(--ink-3)}
.chat__form textarea{
  flex:1;font:inherit;font-size:15px;color:var(--fg);background:var(--ink);
  border:1px solid var(--line-2);border-radius:var(--r);padding:11px 12px;resize:none;
  max-height:120px;field-sizing:content;
}
.chat__form textarea:focus{outline:none;border-color:var(--hot)}
.chat__send{width:44px;height:44px;flex:none;display:grid;place-items:center;background:var(--hot);color:#0b0b0b;border:0;border-radius:var(--r);cursor:pointer}
.chat__send:disabled{opacity:.45;cursor:default}
.chat__note{margin:0;padding:0 16px 12px;font-size:11.5px;color:var(--fg-3);background:var(--ink-3)}

/* ── появление при прокрутке ──────────────────────────────── */
/* По умолчанию всё видно: если браузер не умеет scroll-driven,
   содержимое не должно пропасть. */
@supports (animation-timeline:view()){
  @media (prefers-reduced-motion:no-preference){
    .rv{animation:rise .8s var(--ease) both;animation-timeline:view();animation-range:entry 0% cover 22%}
    .svc__card,.why li,.steps li,.case,.doc{animation:rise .7s var(--ease) both;animation-timeline:view();animation-range:entry 0% cover 20%}
  }
}
@keyframes rise{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}

/* низкие экраны: герой не должен обрезать нижнюю строку фактов */
@media (min-width:901px) and (max-height:900px){
  .hero{padding-top:84px}
  .hero__h{font-size:clamp(30px,4.3vw,56px)}
  .hero__lead{margin-top:16px}
  .hero__cta{margin-top:22px}
  .hero__in{padding-bottom:clamp(28px,3vw,44px)}
  .hero__facts{padding:18px 0 20px;gap:18px}
}

/* ── адаптив ──────────────────────────────────────────────── */
@media (max-width:1100px){
  .nav{display:none}
  .burger{display:block}
  .hdr.is-open .nav{display:flex;position:absolute;top:74px;left:0;right:0;flex-direction:column;gap:0;
    background:var(--ink-2);border-bottom:1px solid var(--line);padding:8px var(--pad) 18px}
  .hdr.is-open .nav a{padding:13px 0;border-bottom:1px solid var(--line)}
  .svc,.cases,.why,.steps{grid-template-columns:repeat(2,1fr)}
  .svc__card--wide,.svc__card--accent{grid-column:span 2}
  .case,.case--lead,  .case--lead{flex-direction:column}
  .case--lead .case__media{min-height:0;aspect-ratio:16/9}
  .hero__facts{grid-template-columns:repeat(2,1fr);gap:20px}
}
@media (max-width:900px){
  .permits,.contacts{grid-template-columns:1fr}
  .contacts__ask{position:static}
  .svc__card--wide{flex-direction:column}
  .svc__card--accent .svc__body{grid-template-columns:1fr}
  .svc__card--accent :is(.eyebrow,h3,p,.tags){grid-column:1;grid-row:auto}
  .hero__scrim{background:
    linear-gradient(180deg,color-mix(in oklab,var(--ink) 86%,transparent) 0%,color-mix(in oklab,var(--ink) 58%,transparent) 40%,var(--ink) 94%)}
  .hero{min-height:auto;padding-top:120px}
}
@media (max-width:640px){
  body{font-size:16px}
  .hdr__tel,.hdr__act .btn{display:none}
  .svc,.cases,.why,.steps,.permits__docs{grid-template-columns:1fr}
  .svc__card,.case,.case--lead,.case--text{grid-column:span 1}
  .hero__facts{grid-template-columns:1fr;gap:16px}
  .hero__cta{flex-direction:column}
  .hero__cta .btn{width:100%}
  .contacts__list div{grid-template-columns:1fr;gap:4px}
  .case--text .case__h{margin-left:0}
  .chat{right:0;bottom:0;width:100vw;height:100dvh;border-radius:0;border:0}
  .chat-fab span{display:none}
  .chat-fab{padding:16px;border-radius:50%}
  .ftr__in{gap:16px}
  .ftr__copy{margin-right:0;order:3;width:100%}
}

/* ── бережный режим ───────────────────────────────────────── */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .rv,.hero__h .line>*{opacity:1;transform:none}
}