/* ============================================================
   AURUM — вариант B «Mercedes»
   Светлый инженерный минимализм: воздух, линии, крупные фото.
   ============================================================ */

:root{
  --bg:#0B0B0C;
  --bg-2:#141416;
  --bg-3:#1C1C1F;
  --ink:#F3F3F4;
  --ink-2:#D7D8DA;
  --muted:#93969C;
  --line:#2A2A2E;
  --accent:#00ADEF;
  --paper:#F3F3F4;      /* инверсный светлый блок — ритм-пауза на тёмном сайте */
  --paper-ink:#0B0B0C;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif;
  --wrap:1440px;
  --pad:clamp(20px,4.4vw,72px);
  --sec:clamp(76px,10vw,160px);
  --ease:cubic-bezier(.25,.1,.25,1);
}

:root{color-scheme:dark}   /* сайт тёмный по замыслу — автоинверсия браузера не нужна */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font:400 17px/1.6 var(--sans);letter-spacing:-.005em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
::selection{background:var(--ink);color:var(--bg)}

/* ---------- сетка ---------- */
.wrap{width:min(100% - var(--pad)*2,var(--wrap));margin-inline:auto}
.wrap--narrow{width:min(100% - var(--pad)*2,880px);margin-inline:auto}
.section{padding-block:var(--sec)}
.section--alt{background:var(--bg-2)}
.section--dark{background:var(--paper);color:var(--paper-ink)}
.section--dark .muted,.section--dark .lead{color:#5B5E63}
.section--dark .kicker{color:#5B5E63}
.section--dark .step{border-color:#D5D6D9}
.section--dark a{color:var(--paper-ink)}
.grid{display:grid;gap:clamp(18px,2vw,28px)}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:1000px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.g2,.g3,.g4{grid-template-columns:1fr}}

/* ---------- типографика ---------- */
h1,h2,h3,h4{margin:0;font-weight:300;letter-spacing:-.03em;line-height:1.05}
h1{font-size:clamp(40px,7vw,104px)}
h2{font-size:clamp(30px,4.6vw,64px)}
h3{font-size:clamp(20px,2vw,26px);letter-spacing:-.02em;line-height:1.2;font-weight:400}
h4{font-size:19px;font-weight:500;letter-spacing:-.01em;line-height:1.3}
p{margin:0 0 1.1em}
.lead{font-size:clamp(17px,1.4vw,21px);line-height:1.55;color:var(--muted);font-weight:300;letter-spacing:-.01em}
.kicker{
  font-size:12px;font-weight:500;text-transform:uppercase;letter-spacing:.2em;
  color:var(--muted);margin:0 0 20px;
}
.num{font-size:12px;letter-spacing:.16em;color:var(--muted);font-variant-numeric:tabular-nums}
.muted{color:var(--muted)}
.center{text-align:center}
.sec-head{max-width:900px;margin-bottom:clamp(34px,4.6vw,64px)}
.sec-head.center{margin-inline:auto}
.rhomb{display:none}
.em{font-weight:400}
.cap{font-size:13px;color:var(--muted);margin-top:12px;letter-spacing:0}

/* ---------- кнопки ---------- */
.btn{
  --h:54px;
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:var(--h);padding:0 30px;border-radius:999px;border:1px solid transparent;
  font:500 15px/1 var(--sans);letter-spacing:-.01em;cursor:pointer;
  transition:.3s var(--ease);white-space:nowrap;text-align:center;
}
.btn--gold{background:var(--ink);color:var(--bg)}
.btn--gold:hover{background:#FFFFFF}
.btn--ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn--ghost:hover{background:var(--ink);color:var(--bg)}
.btn--line{border-color:var(--line);color:var(--ink)}
.btn--line:hover{border-color:var(--ink)}
.section--dark .btn--gold{background:var(--paper-ink);color:var(--paper)}
.section--dark .btn--gold:hover{background:#2B2B2E}
.section--dark .btn--ghost{border-color:#C9CACD;color:var(--paper-ink)}
.section--dark .btn--ghost:hover{background:var(--paper-ink);color:var(--paper)}
.btn--sm{--h:44px;padding:0 22px;font-size:14px}
.btn--wide{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:9px;color:var(--ink);
  font:500 15px/1 var(--sans);transition:.3s var(--ease);
  border-bottom:1px solid var(--ink);padding-bottom:5px;
}
.link-arrow:hover{gap:15px}
.section--dark .link-arrow{color:var(--paper-ink);border-color:var(--paper-ink)}

/* ---------- шапка ---------- */
.hdr{position:fixed;inset:0 0 auto;z-index:60;background:rgba(11,11,12,.88);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);transition:.3s}
.hdr__in{display:flex;align-items:center;gap:clamp(14px,1.6vw,28px);height:72px}
.logo{display:flex;flex-direction:column;line-height:1;margin-right:auto}
.logo b{font-size:23px;font-weight:500;letter-spacing:.22em}
.logo span{font-size:8.5px;letter-spacing:.26em;text-transform:uppercase;color:var(--muted);margin-top:6px}
.nav{display:flex;gap:clamp(12px,1.5vw,28px);white-space:nowrap}
.nav a{font-size:15px;color:var(--ink);padding:24px 0;position:relative;transition:.25s}
.nav a::after{content:'';position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--ink);transition:right .3s var(--ease)}
.nav a:hover::after,.nav a[aria-current]::after{right:0}
.hdr__tel{font-size:15px;white-space:nowrap;color:var(--muted)}
.hdr__tel:hover{color:var(--ink)}
.lang{display:flex;gap:2px}
.lang button{background:none;border:0;cursor:pointer;color:var(--muted);font-size:13px;padding:4px 6px;border-radius:999px;transition:.2s}
.lang button[aria-pressed="true"]{color:var(--ink);background:var(--bg-3)}
.burger{display:none;width:44px;height:44px;background:none;border:1px solid var(--line);border-radius:999px;cursor:pointer;position:relative}
.burger i{position:absolute;left:13px;right:13px;height:1px;background:var(--ink);transition:.3s var(--ease)}
.burger i:nth-child(1){top:17px}.burger i:nth-child(2){top:21px}.burger i:nth-child(3){top:25px}
.burger[aria-expanded="true"] i:nth-child(1){transform:translateY(4px) rotate(45deg)}
.burger[aria-expanded="true"] i:nth-child(2){opacity:0}
.burger[aria-expanded="true"] i:nth-child(3){transform:translateY(-4px) rotate(-45deg)}
@media(max-width:1240px){.lang{display:none}}
@media(max-width:1140px){.hdr__tel{display:none}}
@media(max-width:1080px){.nav,.hdr__tel,.lang{display:none}.burger{display:block}}
.mnav{
  position:fixed;inset:0;z-index:70;background:var(--bg);padding:92px var(--pad) 40px;
  display:flex;flex-direction:column;gap:0;transform:translateY(-100%);transition:.4s var(--ease);
  overflow-y:auto;visibility:hidden;
}
.mnav.is-open{transform:none;visibility:visible}
.mnav a{font-size:26px;font-weight:300;letter-spacing:-.03em;padding:16px 0;border-bottom:1px solid var(--line)}
.mnav .btn{margin-top:28px}
.mnav__close{position:absolute;top:16px;right:var(--pad);width:44px;height:44px;background:none;border:1px solid var(--line);border-radius:999px;color:var(--ink);font-size:20px;cursor:pointer}

/* ---------- герой ---------- */
.hero{position:relative;padding-top:72px}
.hero__bg{position:relative;aspect-ratio:21/9;overflow:hidden;background:var(--bg-3)}
@media(max-width:900px){.hero__bg{aspect-ratio:16/9}}
.hero__bg img{width:100%;height:100%;object-fit:cover}
.hero__bg::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.7) 0%,rgba(0,0,0,.42) 38%,rgba(0,0,0,.12) 70%,transparent 100%)}
.hero__in{position:absolute;inset:auto 0 0;padding-bottom:clamp(30px,5vw,64px);color:#fff;z-index:1}
.hero__in .lead{color:rgba(255,255,255,.82)}
.hero__in .kicker{color:rgba(255,255,255,.7)}
.hero h1{max-width:14ch}
.hero .lead{max-width:46ch;margin-top:20px}
.hero__cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero__in .btn--gold{background:var(--ink);color:var(--bg)}
.hero__in .btn--ghost{border-color:rgba(255,255,255,.6);color:#fff}
.hero__in .btn--ghost:hover{background:#fff;color:#0B0B0C}
.hero__facts{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border-block:1px solid var(--line)}
.hero__facts div{background:var(--bg);padding:clamp(22px,3vw,38px) clamp(16px,2vw,30px)}
.hero__facts div b{display:block;font-size:clamp(28px,3.4vw,46px);font-weight:300;letter-spacing:-.03em}
.hero__facts div span{font-size:13px;color:var(--muted)}
@media(max-width:760px){.hero__facts{grid-template-columns:repeat(2,1fr)}}

/* ---------- форма подбора ---------- */
.picker{
  background:var(--bg);border:1px solid var(--line);
  padding:clamp(18px,2vw,26px);display:grid;gap:14px;
  grid-template-columns:repeat(4,1fr) auto;align-items:end;
}
@media(max-width:900px){.picker{grid-template-columns:repeat(2,1fr)}.picker .btn{grid-column:1/-1}}
@media(max-width:520px){.picker{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:7px;min-width:0}
.field label{font-size:12px;text-transform:uppercase;letter-spacing:.14em;color:var(--muted)}
.field input,.field select,.field textarea{
  background:var(--bg);border:1px solid var(--line);border-radius:0;
  padding:0 14px;height:52px;width:100%;transition:.25s;
}
.field textarea{height:auto;padding:14px;min-height:130px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--ink);outline:none}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink) 50%),linear-gradient(135deg,var(--ink) 50%,transparent 50%);background-position:calc(100% - 18px) 23px,calc(100% - 13px) 23px;background-size:5px 5px;background-repeat:no-repeat;padding-right:38px;cursor:pointer}
.field--err input,.field--err select{border-color:#C0392B}
.field small{font-size:13px;color:var(--muted)}

/* ---------- карточка авто ---------- */
.card{
  position:relative;background:var(--bg);border:1px solid var(--line);border-radius:0;
  overflow:hidden;display:flex;flex-direction:column;transition:.35s var(--ease);
}
.card:hover{border-color:var(--ink)}
.card__ph{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-3);display:block}
.card__ph img{width:100%;height:100%;object-fit:cover;transition:transform .7s var(--ease)}
.card:hover .card__ph img{transform:scale(1.03)}
.badge{
  position:absolute;top:0;left:0;z-index:2;background:var(--ink);color:var(--bg);
  font-size:11px;letter-spacing:.14em;text-transform:uppercase;padding:7px 13px;
}
.card__body{padding:24px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.card__top{display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.card__brand{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.card__meta{display:flex;flex-wrap:wrap;gap:7px}
.tag{font-size:13px;color:var(--muted);background:var(--bg-2);padding:5px 11px}
.card__foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);display:flex;align-items:flex-end;justify-content:space-between;gap:12px}
.price b{font-size:26px;font-weight:300;letter-spacing:-.03em;display:block;line-height:1.1}
.price span{font-size:13px;color:var(--muted)}

/* ---------- плитка ---------- */
.tile{position:relative;display:block;overflow:hidden;background:var(--bg-3);transition:.35s var(--ease)}
.tile img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.tile::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.05) 30%,rgba(0,0,0,.72) 100%)}
.tile:hover img{transform:scale(1.04)}
.tile__in{position:relative;z-index:1;min-height:340px;height:100%;display:flex;flex-direction:column;justify-content:flex-end;padding:28px;color:#fff}
.tile__in h3{margin-bottom:8px}
.tile__in p{color:rgba(255,255,255,.75);font-size:15px;margin:0}
.tile__in .link-arrow{margin-top:16px;align-self:flex-start;color:#fff;border-color:#fff}

/* ---------- шаги, преимущества ---------- */
.step{border-top:1px solid var(--line);padding-top:20px;display:flex;flex-direction:column;gap:8px}
.step .num{font-size:13px;color:var(--muted)}
.adv{padding:28px 0;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:8px}
.adv i{display:none}
.adv h4{margin:0}
.adv p{margin:0;color:var(--muted);font-size:15.5px}

/* ---------- отзывы ---------- */
.quote{background:var(--bg);border:1px solid var(--line);padding:32px;display:flex;flex-direction:column;gap:18px;height:100%}
.quote__mark{display:none}
.quote p{font-size:20px;font-weight:300;line-height:1.45;letter-spacing:-.02em;margin:0}
.quote footer{margin-top:auto;padding-top:18px;border-top:1px solid var(--line)}
.quote footer b{display:block;font-weight:500;font-size:15px}
.quote footer span{font-size:13.5px;color:var(--muted)}

/* ---------- карусель ---------- */
.rail{position:relative}
.rail__track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px;scrollbar-width:none}
.rail__track::-webkit-scrollbar{display:none}
.rail__track>*{flex:0 0 min(84vw,380px);scroll-snap-align:start}
.rail__nav{display:flex;gap:8px}
.rail__nav button{width:46px;height:46px;border-radius:999px;border:1px solid var(--line);background:none;cursor:pointer;transition:.25s}
.rail__nav button:hover{border-color:var(--ink)}

/* ---------- CTA ---------- */
.cta{position:relative;overflow:hidden;background:#000;color:var(--ink);border:1px solid var(--line)}
.cta img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.6}
.cta::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.8) 25%,rgba(0,0,0,.15))}
.cta__in{position:relative;z-index:1;padding:clamp(40px,6vw,96px);max-width:680px}
.cta .lead{color:rgba(255,255,255,.75)}
.cta .btn--gold{background:var(--ink);color:var(--bg)}
.cta .btn--ghost{border-color:rgba(255,255,255,.6);color:#fff}

/* ---------- подвал ---------- */
.ftr{background:#070708;border-top:1px solid var(--line);padding-top:clamp(56px,7vw,96px)}
.ftr__grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:clamp(24px,3vw,48px)}
@media(max-width:900px){.ftr__grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.ftr__grid{grid-template-columns:1fr}}
.ftr h5{font:500 12px/1 var(--sans);letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin:0 0 20px}
.ftr ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px}
.ftr a{font-size:15px;transition:.2s}
.ftr a:hover{color:var(--muted)}
.ftr__bottom{margin-top:clamp(40px,5vw,72px);padding:24px 0;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;font-size:13.5px;color:var(--muted)}

/* ---------- служебное ---------- */
.crumbs{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:13.5px;color:var(--muted);padding-top:100px}
.crumbs a:hover{color:var(--ink)}
.page-head{padding-block:clamp(28px,4vw,56px) clamp(36px,5vw,72px);border-bottom:1px solid var(--line)}
.wa{
  position:fixed;right:22px;bottom:22px;z-index:50;width:56px;height:56px;border-radius:50%;
  background:var(--ink);color:var(--bg);display:grid;place-items:center;
  box-shadow:0 10px 30px rgba(0,0,0,.5);transition:.3s var(--ease);
}
.wa:hover{transform:scale(1.06)}
.wa svg{width:26px;height:26px}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.note{background:var(--bg-2);border-left:2px solid var(--ink);padding:18px 22px;color:var(--muted);font-size:15.5px}

@media(max-width:640px){
  .hdr .btn--gold{display:none}
  .hero__bg{aspect-ratio:4/5;min-height:0}
  .hero__bg::after{background:linear-gradient(180deg,rgba(0,0,0,.5) 0%,rgba(0,0,0,.28) 32%,rgba(0,0,0,.74) 100%)}
  .hero__in{padding-bottom:26px}
  .btn{--h:50px}
  .wa{width:50px;height:50px;right:14px;bottom:14px}
}