/* Изыскания и бурение: шаблон главной. Тёмная земля от верха до низа, в ней освещённые вещи: фото, расчёт, разрез грунта. */
@font-face{font-family:Geologica;font-weight:100 900;font-display:swap;src:url(fonts/geologica-vf-cyrillic.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:Geologica;font-weight:100 900;font-display:swap;src:url(fonts/geologica-vf-latin.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}
:root{
  --bg:#15110d; --surface:#211a14; --paper:#e7e5e0; --ink:#e7e5e0; --muted:#b3ada3; --accent:#ff7a1a; --accent-dk:#e0650b; --accent-ink:#15110d;
  --f:Geologica,system-ui,-apple-system,"Segoe UI",sans-serif;
  --s-sm:1rem; --s-body:clamp(1.0625rem,1rem + .25vw,1.25rem); --s-lead:clamp(1.375rem,1.05rem + 1.05vw,2.25rem); --s-head:clamp(2.25rem,1.4rem + 3.4vw,4rem); --s-disp:clamp(7.5rem,19vw,18.75rem);
  --m:clamp(20px,5vw,72px); --g:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:400 var(--s-body)/1.6 var(--f);-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit} p,figure,h1,h2{margin:0}
h1,h2{font-weight:600;letter-spacing:-.03em;line-height:1}
h2{font-size:var(--s-head)}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.btn{display:inline-flex;align-items:center;min-height:52px;padding:0 28px;background:var(--accent);color:var(--accent-ink);font:600 var(--s-body)/1 var(--f);text-decoration:none;transition:background .25s,transform .25s}
.btn:hover{background:var(--accent-dk)} .btn:active{transform:translateY(2px)}
.btn--s{min-height:44px;padding:0 20px;font-size:var(--s-sm)}
.lead{font-size:var(--s-lead);line-height:1.18;letter-spacing:-.02em;font-weight:400;max-width:24em}

.top{display:flex;align-items:center;gap:28px;padding:16px var(--m);position:absolute;top:0;left:0;right:0;z-index:5;background:rgba(21,17,13,.82)}
.mark{font:600 var(--s-body)/1 var(--f);letter-spacing:-.02em;text-decoration:none}
.top__nav{display:flex;gap:26px;margin-left:auto;font-size:var(--s-sm)}
.top__nav a{text-decoration:none;transition:color .2s} .top__nav a:hover{color:var(--accent)}

.hero{min-height:100svh;display:grid;grid-template-rows:52svh auto auto;align-content:space-between}
.hero__ph{margin:0;overflow:hidden;background:#000}
.hero__ph img{width:100%;height:100%;object-fit:cover;object-position:50% 40%}
.hero__mid{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px 40px;padding:clamp(18px,3vh,32px) var(--m)}
.hero__mid .lead{max-width:22em}
.hero__name{align-self:end;margin:clamp(12px,2vh,24px) var(--m) 28px;font:600 var(--s-disp)/.85 var(--f);letter-spacing:-.05em;white-space:nowrap;transform:translateY(calc(var(--k,0) * 28px))}

.facts{padding:clamp(80px,10vw,150px) var(--m) clamp(80px,10vw,150px)}
.facts__s{margin-left:clamp(0px,8.4vw,120px);max-width:23em;color:var(--muted)}
.facts__s b{font-weight:600;color:var(--ink)}

.calc{display:grid;grid-template-columns:repeat(12,1fr);column-gap:var(--g);padding:0 var(--m);align-items:start}
.calc__side{grid-column:1 / span 6;display:flex;flex-direction:column;gap:26px}
.calc__side>p{max-width:30em;color:var(--muted)}
.rng{display:flex;flex-direction:column;gap:10px;max-width:30em}
.rng__t{font-size:var(--s-body);font-weight:500} .rng__t output{font-weight:600;color:var(--accent)}
.rng input{width:100%;height:36px;accent-color:var(--accent);cursor:pointer}
.calc__res{display:flex;flex-direction:column;gap:12px;align-items:flex-start;padding:clamp(22px,2.4vw,32px);background:var(--surface);max-width:30em}
.calc__big{font:600 clamp(2.25rem,1.4rem + 3vw,3.75rem)/1 var(--f);letter-spacing:-.03em;color:var(--accent)}
.calc__sm{font-size:var(--s-sm);color:var(--muted);line-height:1.5}
.soil{grid-column:8 / span 4;margin:0}
.soil svg{display:block;width:100%;height:auto}
.h{fill:var(--accent);transition:transform .55s cubic-bezier(.2,.7,.2,1),opacity .35s ease}
.h rect{transition:height .45s cubic-bezier(.2,.7,.2,1)} .h polygon{transition:transform .45s cubic-bezier(.2,.7,.2,1)}

.how{display:grid;grid-template-columns:repeat(12,1fr);column-gap:var(--g);row-gap:clamp(56px,7vw,110px);padding:clamp(100px,12vw,190px) var(--m) 0;align-items:start}
.how__h{grid-column:1 / span 8;grid-row:1}
.how__a{grid-column:1 / span 5;grid-row:2;margin:0;aspect-ratio:4/3}
.how__pa{grid-column:7 / span 4;grid-row:2;align-self:end}
.how__pb{grid-column:2 / span 4;grid-row:3;align-self:center}
.how__b{grid-column:7 / span 4;grid-row:3;aspect-ratio:1;margin:0}
.how__c{grid-column:2 / span 6;grid-row:4;aspect-ratio:16/10;margin:0}
.how__pc{grid-column:9 / span 4;grid-row:4;align-self:center}
.how figure img{width:100%;height:100%;object-fit:cover}
.how p{max-width:36ch;font-size:var(--s-body);color:var(--muted)} .how b{color:var(--ink);font-weight:600}

.objects{padding:clamp(110px,14vw,220px) var(--m) 0}
.objects__g{display:grid;grid-template-columns:repeat(12,1fr);column-gap:var(--g);row-gap:clamp(40px,6vw,88px);margin-top:clamp(36px,5vw,64px);align-items:start}
.o{margin:0}
.o img{width:100%;height:auto;aspect-ratio:3/2;object-fit:cover;transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.o:hover img{transform:scale(1.03)}
.o{overflow:hidden}
.o figcaption{margin-top:12px;font-size:var(--s-sm);color:var(--muted);line-height:1.45;max-width:30em}
.o--a{grid-column:1 / span 5} .o--b{grid-column:7 / span 6;margin-top:clamp(40px,7vw,100px)}
.o--c{grid-column:3 / span 4} .o--d{grid-column:8 / span 5;margin-top:clamp(30px,5vw,70px)}
.o--e{grid-column:1 / span 4} .o--f{grid-column:6 / span 7;margin-top:clamp(40px,7vw,100px)}

.faq{padding:clamp(120px,15vw,240px) var(--m) 0;display:grid;row-gap:clamp(52px,6vw,84px)}
.q{display:grid;grid-template-columns:repeat(12,1fr);column-gap:var(--g);align-items:start}
.q__q{grid-column:1 / span 6;font:500 var(--s-lead)/1.12 var(--f);letter-spacing:-.02em;max-width:16em}
.q__q--h{grid-column:1 / -1;max-width:none;font:600 var(--s-head)/1 var(--f);letter-spacing:-.03em}
.q__a{grid-column:8 / span 5;max-width:40ch;color:var(--muted);line-height:1.55}

.contact{display:grid;grid-template-columns:repeat(12,1fr);column-gap:var(--g);padding:0 var(--m);margin-top:clamp(110px,14vw,220px)}
.contact__ph{grid-column:1 / span 7;position:relative;margin:0;min-height:clamp(320px,38vw,560px);overflow:hidden;background:#000}
.contact__ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 40%}
.card{grid-column:8 / span 5;background:var(--paper);color:var(--bg);padding:clamp(24px,3.2vw,48px);display:flex;flex-direction:column;justify-content:space-between;gap:36px}
.card__top,.card__bot{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.card__t{font:600 var(--s-body)/1.2 var(--f);letter-spacing:-.01em}
.card__a{font-size:var(--s-body);line-height:1.5}
.card__tel a{font:600 var(--s-lead)/1.05 var(--f);letter-spacing:-.03em;text-decoration:none;white-space:nowrap}
.card__tel a:hover{color:var(--accent-dk)}
.card__p a{font-size:var(--s-body);font-weight:500;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:.25em}
.card__b{margin-top:10px;min-height:56px}

.foot{display:grid;grid-template-columns:1fr auto 1fr;gap:24px;align-items:end;padding:clamp(80px,10svh,140px) var(--m) 28px;font-size:var(--s-sm);color:var(--muted)}
.foot__l{display:flex;gap:24px;flex-wrap:wrap;justify-content:center} .foot__l a{color:var(--ink);text-decoration:none;transition:color .2s} .foot__l a:hover{color:var(--accent)}
.foot__r{text-align:right}

.rv{transition:opacity .85s ease,transform .85s cubic-bezier(.2,.7,.2,1);transition-delay:var(--d,0ms)}
.js .rv{opacity:0;transform:translateY(26px)} .js .rv.in{opacity:1;transform:none}
.js .hero__ph img{transform:scale(1.12);transition:transform 2.2s cubic-bezier(.2,.7,.2,1)} .js .hero__ph.in img{transform:none}
.js .hero__name{opacity:0;transition:opacity 1s ease .4s} .js .hero__name.in{opacity:1}

@media (max-width:860px){
  .top__nav{display:none} .top{justify-content:space-between}
  .hero{min-height:0;grid-template-rows:46svh auto auto;align-content:start}
  .hero__ph{order:0} .hero__name{order:1;font-size:min(20.5vw,10rem);margin:22px var(--m) 4px} .hero__mid{order:2}
  .hero__mid{flex-direction:column;align-items:flex-start}
  .facts__s{margin-left:0}
  .calc{display:flex;flex-direction:column;gap:32px} .soil{width:100%;max-width:420px}
  .how{display:flex;flex-direction:column;gap:22px;padding-top:90px}
  .how__a{width:100%} .how__b{width:62%;align-self:flex-end;margin:20px 0 0} .how__c{width:78%;margin:20px 0 0}
  .how__pa,.how__pb,.how__pc{margin-top:0}
  .q .q__q--h{font-size:var(--s-head)}
  .objects__g{display:flex;flex-direction:column;gap:28px}
  .o--b,.o--d,.o--f{margin-top:0}
  .q{display:flex;flex-direction:column;gap:14px}
  .contact{display:flex;flex-direction:column;gap:0}
  .contact__ph{min-height:0;aspect-ratio:3/2}
  .card{gap:28px}
  .foot{grid-template-columns:1fr;gap:10px;padding-top:120px} .foot__l{justify-content:flex-start} .foot__r{text-align:left}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
  .js .rv,.js .hero__name{opacity:1 !important;transform:none !important} .js .hero__ph img{transform:none !important} .hero__name{transform:none !important}
}