/* ============================================================
   МерседесРемонт.РФ — базовая дизайн-система
   ============================================================ */

:root{
  --ink:        #0b0e13;
  --ink-2:      #12171f;
  --ink-3:      #1b222c;
  --graphite:   #2a323e;
  --steel:      #5c6675;
  --silver:     #9aa4b2;
  --mist:       #e5e8ec;
  --paper:      #f5f6f8;
  --white:      #ffffff;

  --accent:     #0b63ce;
  --accent-dk:  #084a9c;
  --accent-soft:#e8f0fb;
  --warn:       #b3261e;
  --ok:         #1c7c4a;

  --line:       #dde1e6;
  --line-dark:  rgba(255,255,255,.12);

  --radius:     14px;
  --radius-sm:  9px;
  --shadow:     0 1px 2px rgba(11,14,19,.06), 0 8px 24px rgba(11,14,19,.08);
  --shadow-lg:  0 2px 4px rgba(11,14,19,.08), 0 18px 48px rgba(11,14,19,.14);

  --wrap:       1180px;
  --font:       -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth}

body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.65;
  color:var(--ink);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{max-width:100%;height:auto;display:block}

a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

h1,h2,h3,h4{margin:0 0 .5em;line-height:1.2;font-weight:700;letter-spacing:-.02em}
h1{font-size:clamp(2rem,1.3rem + 2.8vw,3.25rem)}
h2{font-size:clamp(1.5rem,1.15rem + 1.5vw,2.25rem)}
h3{font-size:clamp(1.15rem,1.05rem + .45vw,1.4rem)}
p{margin:0 0 1em}

.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:20px}
.section{padding:clamp(48px,6vw,84px) 0}
.section--tight{padding:clamp(32px,4vw,56px) 0}
.section--paper{background:var(--paper)}
.section--dark{background:var(--ink);color:var(--mist)}
.section--dark h2,.section--dark h3{color:var(--white)}
.section--dark a{color:#7fb2f5}

.lede{font-size:clamp(1.05rem,1rem + .35vw,1.25rem);color:var(--steel);max-width:70ch}
.section--dark .lede{color:var(--silver)}

.eyebrow{
  display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.13em;
  text-transform:uppercase;color:var(--accent);margin-bottom:.75rem;
}
.section--dark .eyebrow{color:#7fb2f5}

.head{max-width:75ch;margin-bottom:clamp(28px,3vw,44px)}
.head:last-child{margin-bottom:0}

/* ---------- Кнопки ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:.85em 1.5em;border-radius:var(--radius-sm);border:1px solid transparent;
  font-size:1rem;font-weight:650;line-height:1.2;cursor:pointer;
  transition:background .16s ease,border-color .16s ease,transform .12s ease,box-shadow .16s ease;
  text-decoration:none !important;white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn--primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(11,99,206,.28)}
.btn--primary:hover{background:var(--accent-dk)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn--ghost:hover{background:var(--paper);border-color:var(--steel)}
.section--dark .btn--ghost,.hero .btn--ghost{color:#fff;border-color:rgba(255,255,255,.32)}
.section--dark .btn--ghost:hover,.hero .btn--ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.55)}
.btn--lg{padding:1em 1.9em;font-size:1.05rem}

/* ---------- Топбар ---------- */
.topbar{background:var(--ink);color:var(--silver);font-size:.86rem}
.topbar__in{display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center;justify-content:space-between;padding-block:9px}
.topbar a{color:var(--mist)}
.topbar__geo{display:flex;flex-wrap:wrap;gap:6px 18px}
.topbar__geo span{display:inline-flex;align-items:center;gap:.45em}

/* ---------- Шапка ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);
}
.site-header__in{display:flex;align-items:center;gap:16px;min-height:72px}

.logo{display:flex;align-items:center;gap:11px;text-decoration:none !important;color:var(--ink);flex:0 0 auto}
.logo img{width:40px;height:40px;border-radius:9px}
.logo__txt{display:flex;flex-direction:column;line-height:1.15}
.logo__name{font-weight:800;font-size:1.02rem;letter-spacing:-.02em}
.logo__sub{font-size:.72rem;color:var(--steel);letter-spacing:.02em}

.nav{margin-left:auto;display:flex;align-items:center;gap:2px}
.nav a{
  color:var(--ink);font-size:.95rem;font-weight:550;padding:.55em .7em;border-radius:8px;
  white-space:nowrap;text-decoration:none !important;transition:background .15s ease,color .15s ease;
}
.nav a:hover{background:var(--paper)}
.nav a[aria-current="page"]{color:var(--accent);background:var(--accent-soft)}

.header-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.header-phone{font-weight:750;font-size:1.02rem;color:var(--ink);white-space:nowrap;text-decoration:none !important}

.burger{
  display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--line);
  background:var(--white);border-radius:9px;cursor:pointer;padding:0;align-items:center;justify-content:center;
}
.burger span{display:block;width:20px;height:2px;background:var(--ink);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:var(--ink)}
.burger span::before{top:-6px}
.burger span::after{top:6px}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;isolation:isolate}
.hero__bg{position:absolute;inset:0;z-index:-2;background-size:cover;background-position:center;opacity:.34;filter:grayscale(.25)}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(105deg,var(--ink) 8%,rgba(11,14,19,.9) 42%,rgba(11,14,19,.55) 100%);
}
.hero__in{padding-block:clamp(52px,7vw,104px);max-width:820px}
.hero h1{color:#fff;margin-bottom:.45em}
.hero p{color:#c3ccd8;font-size:clamp(1.05rem,1rem + .45vw,1.3rem);max-width:62ch}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero__facts{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line-dark)}
.hero__facts div{font-size:.94rem;color:#c3ccd8;display:flex;align-items:center;gap:.5em}
.hero__facts b{color:#fff;font-weight:700}

.hero--inner .hero__in{padding-block:clamp(40px,5vw,72px);max-width:900px}

/* ---------- Хлебные крошки ---------- */
.crumbs{font-size:.85rem;color:var(--steel);padding-block:14px;border-bottom:1px solid var(--line)}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.4em}
.crumbs li::after{content:"›";margin-left:.45em;color:var(--silver)}
.crumbs li:last-child::after{content:""}
.crumbs a{color:var(--steel)}
.hero .crumbs{color:var(--silver);border-bottom-color:var(--line-dark)}
.hero .crumbs a{color:var(--silver)}

/* ---------- Сетки и карточки ---------- */
.grid{display:grid;gap:20px}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid--4{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}

.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.card--link:hover{border-color:var(--accent);box-shadow:var(--shadow);transform:translateY(-2px)}
.card h3{margin-bottom:.4em}
.card h3 a{color:var(--ink);text-decoration:none !important}
.card--link:hover h3 a{color:var(--accent)}
.card p{color:var(--steel);font-size:.98rem;margin-bottom:.7em}
.card__price{font-weight:750;color:var(--ink);font-size:1.02rem}
.card__more{font-size:.92rem;font-weight:600;color:var(--accent);display:inline-flex;gap:.35em;align-items:center}
.section--dark .card{background:var(--ink-2);border-color:var(--line-dark)}
.section--dark .card h3 a{color:#fff}
.section--dark .card p{color:var(--silver)}

.icon{width:34px;height:34px;color:var(--accent);margin-bottom:14px;display:block}
.section--dark .icon{color:#7fb2f5}

/* ---------- Список преимуществ ---------- */
.checks{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.checks li{position:relative;padding-left:34px;color:var(--steel)}
.checks li strong{color:var(--ink);font-weight:650}
.section--dark .checks li{color:var(--silver)}
.section--dark .checks li strong{color:#fff}
.checks li::before{
  content:"";position:absolute;left:0;top:.35em;width:20px;height:20px;border-radius:50%;
  background:var(--accent-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230b63ce' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/12px no-repeat;
}
.section--dark .checks li::before{background-color:rgba(127,178,245,.16)}

/* ---------- Прайс-таблица ---------- */
.price-table{width:100%;border-collapse:collapse;font-size:.97rem;background:var(--white);color:var(--ink)}
.price-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.price-table th,.price-table td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.price-table thead th{background:var(--paper);font-size:.8rem;letter-spacing:.07em;text-transform:uppercase;color:var(--steel);font-weight:700;white-space:nowrap}
.price-table tbody tr:last-child td{border-bottom:0}
.price-table tbody tr:hover{background:#fafbfc}
.price-table .price{font-weight:750;white-space:nowrap;color:var(--ink)}
.price-table .warranty{color:var(--ok);font-size:.88rem;white-space:nowrap}
.price-table small{display:block;color:var(--steel);font-size:.8rem;margin-top:4px;line-height:1.5;word-break:break-word}

/* ---------- Каталог номеров запчастей ---------- */
.parts{display:grid;gap:18px}
.parts__group{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 26px;
}
.parts__group h3{margin-bottom:.3em}
.parts__group > p{color:var(--steel);font-size:.97rem;margin-bottom:1em}
.parts__meta{
  display:inline-block;font-size:.82rem;font-weight:650;color:var(--ok);
  background:#eaf5ef;border-radius:999px;padding:.25em .8em;margin-bottom:14px;
}
.parts__nums{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.85rem;line-height:1.95;letter-spacing:.01em;color:var(--graphite);
  margin:0;word-spacing:.08em;
}
.parts__nums + .parts__nums{margin-top:14px}
.parts__label{
  display:block;font-family:var(--font);font-size:.78rem;font-weight:700;
  letter-spacing:.09em;text-transform:uppercase;color:var(--steel);margin-bottom:5px;
}

/* ---------- Чипы моделей ---------- */
.chips{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0}
.chips li{
  border:1px solid var(--line);border-radius:999px;padding:.42em 1em;
  font-size:.9rem;font-weight:600;color:var(--graphite);background:var(--white);
}
.section--dark .chips li{background:var(--ink-2);border-color:var(--line-dark);color:var(--mist)}

/* ---------- Модельный ряд, сгруппированный по классам ---------- */
.models{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(330px,1fr));
  gap:0 40px;list-style:none;margin:0;padding:0;
}
.models li{padding:13px 0;border-top:1px solid var(--line)}
.models b{display:block;font-weight:650;color:var(--ink);margin-bottom:1px}
.models span{color:var(--steel);font-size:.95rem}
.section--dark .models li{border-top-color:var(--line-dark)}
.section--dark .models b{color:#fff}
.section--dark .models span{color:var(--silver)}
@media (max-width:520px){
  .models li{padding:11px 0}
}

/* ---------- Цифры ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:18px}
.stat{padding:24px;border-radius:var(--radius);background:var(--ink-2);border:1px solid var(--line-dark)}
.stat b{display:block;font-size:clamp(1.8rem,1.4rem + 1.4vw,2.6rem);font-weight:800;color:#fff;line-height:1.1;letter-spacing:-.03em}
.stat span{font-size:.92rem;color:var(--silver)}

/* ---------- Симптомы (проблема → решение) ---------- */
.symptoms{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.symptoms li{
  background:var(--white);border:1px solid var(--line);border-left:3px solid var(--warn);
  border-radius:var(--radius-sm);padding:16px 20px;color:var(--graphite);
}
.symptoms li b{color:var(--ink)}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:10px;max-width:860px}
.faq details{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--white);overflow:hidden}
.faq details[open]{border-color:var(--steel)}
.faq summary{
  cursor:pointer;padding:18px 52px 18px 20px;font-weight:650;list-style:none;position:relative;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";position:absolute;right:20px;top:50%;width:11px;height:11px;margin-top:-7px;
  border-right:2px solid var(--steel);border-bottom:2px solid var(--steel);
  transform:rotate(45deg);transition:transform .2s ease;
}
.faq details[open] summary::after{transform:rotate(-135deg);margin-top:-3px}
.faq .faq__a{padding:0 20px 18px;color:var(--steel)}
.faq .faq__a p:last-child{margin-bottom:0}

/* ---------- Карта проезда ---------- */
.map{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);background:var(--paper);
}
.map iframe{display:block;width:100%;height:clamp(320px,48vh,520px);border:0}
.map__note{
  display:flex;flex-wrap:wrap;gap:8px 24px;align-items:baseline;
  margin-top:14px;font-size:.94rem;color:var(--steel);
}
.map__note b{color:var(--ink);font-weight:650}

/* ---------- Блок контактов / CTA ---------- */
.cta-band{background:var(--ink);color:#fff;border-radius:var(--radius);padding:clamp(28px,4vw,48px);text-align:center}
.cta-band h2{color:#fff;margin-bottom:.4em}
.cta-band p{color:var(--silver);max-width:60ch;margin-inline:auto}
.cta-band .hero__actions{justify-content:center}

.contact-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.contact-card dl{margin:0;display:grid;gap:18px}
.contact-card dt{font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--steel);font-weight:700;margin-bottom:3px}
.contact-card dd{margin:0;font-size:1.08rem;font-weight:600}
.contact-card dd a{color:var(--ink)}

.prose{max-width:74ch}
.prose h2{margin-top:1.8em}
.prose h3{margin-top:1.5em}
.prose ul{padding-left:1.25em;color:var(--steel)}
.prose li{margin-bottom:.5em}
.prose :first-child{margin-top:0}

.note{
  background:var(--accent-soft);border:1px solid #c5daf7;border-left:3px solid var(--accent);
  border-radius:var(--radius-sm);padding:18px 22px;color:#123f7d;
}
.note p:last-child{margin-bottom:0}
.note--warn{background:#fdeeed;border-color:#f4cfcc;border-left-color:var(--warn);color:#7a1c16}

/* ---------- Подвал ---------- */
.site-footer{background:var(--ink);color:var(--silver);padding:clamp(40px,5vw,64px) 0 28px;font-size:.94rem}
.site-footer h3{color:#fff;font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;margin-bottom:1.1em}
.site-footer a{color:var(--mist);text-decoration:none}
.site-footer a:hover{text-decoration:underline;color:#fff}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:32px}
.footer-links{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:.85rem;color:var(--steel);
}

/* ---------- Плавающая кнопка звонка (моб.) ---------- */
.call-fab{
  display:none;position:fixed;left:16px;right:16px;bottom:16px;z-index:70;
  background:var(--accent);color:#fff;border-radius:var(--radius-sm);
  padding:1em;text-align:center;font-weight:700;text-decoration:none !important;
  box-shadow:0 8px 28px rgba(11,99,206,.42);
}

/* ---------- Адаптив ---------- */
@media (max-width:1080px){
  .nav{
    position:fixed;inset:72px 0 auto;flex-direction:column;align-items:stretch;gap:0;
    background:var(--white);border-bottom:1px solid var(--line);padding:8px 16px 18px;
    box-shadow:var(--shadow-lg);display:none;
  }
  .nav.is-open{display:flex}
  .nav a{padding:.85em .6em;border-radius:0;border-bottom:1px solid var(--line);font-size:1rem}
  .nav a:last-child{border-bottom:0}
  .burger{display:inline-flex}
  .header-cta{display:none}
  .topbar__in{justify-content:center;text-align:center}
}
@media (max-width:640px){
  body{font-size:16px}
  .topbar__geo span + span{display:none}
  .site-footer{padding-bottom:96px}
  .call-fab{display:block}
  .card{padding:20px}
  .price-table th,.price-table td{padding:12px 14px}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}