/* ГРУНТОРЕЗ.KZ — дизайн-система (индустриальный жёлто-чёрный, быстрый, адаптивный) */
:root{
  --yellow:#f5b500; --yellow-d:#d99e00; --ink:#16181d; --ink-2:#23262e;
  --gray:#5b616b; --line:#e3e6ea; --bg:#f4f6f8; --white:#fff;
  --green:#25d366; --radius:10px; --maxw:1180px;
  --shadow:0 2px 14px rgba(20,24,29,.08); --shadow-h:0 8px 28px rgba(20,24,29,.16);
  --font:'Inter','Segoe UI',Roboto,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.55;font-size:16px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 18px}
h1,h2,h3{line-height:1.2;font-weight:800;letter-spacing:-.01em}
h1{font-size:clamp(26px,4vw,40px)}
h2{font-size:clamp(22px,3vw,30px);margin-bottom:18px}
h3{font-size:19px}
p{margin-bottom:12px}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--yellow);color:var(--ink);
  font-weight:700;padding:13px 24px;border-radius:var(--radius);border:0;cursor:pointer;
  transition:.15s;font-size:15px}
.btn:hover{background:var(--yellow-d);transform:translateY(-1px)}
.btn--ghost{background:transparent;border:2px solid var(--ink);padding:11px 22px}
.btn--wa{background:var(--green);color:#fff}
.btn--wa:hover{background:#1db855}
.muted{color:var(--gray)}
.sect{padding:54px 0}

/* ===== ТОПБАР ===== */
.topbar{background:var(--ink);color:#c9ced6;font-size:13.5px}
.topbar .container{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar a{color:#c9ced6}
.topbar a:hover{color:var(--yellow)}
.topbar__r{display:flex;gap:18px}

/* ===== ШАПКА ===== */
.header{background:var(--ink-2);color:#fff;position:sticky;top:0;z-index:50;box-shadow:var(--shadow)}
.header .container{display:flex;align-items:center;gap:24px;height:72px}
.logo{display:flex;flex-direction:column;font-weight:900;font-size:23px;letter-spacing:.5px;line-height:1}
.logo b{color:var(--yellow)}
.logo span{font-size:11px;font-weight:500;color:#9aa1ac;letter-spacing:.3px;margin-top:3px}
.nav{display:flex;gap:22px;margin-left:auto;font-weight:600;font-size:15px}
.nav a{padding:6px 0;border-bottom:2px solid transparent;transition:.15s}
.nav a:hover,.nav a.active{color:var(--yellow);border-color:var(--yellow)}
.header__phone{display:flex;flex-direction:column;align-items:flex-end;line-height:1.15}
.header__phone a{font-weight:800;font-size:18px;color:#fff;white-space:nowrap}
.header__phone a:hover{color:var(--yellow)}
.header__phone small{color:#9aa1ac;font-size:11.5px}
.header__cta{display:flex;gap:10px;align-items:center}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:6px}
.burger span{width:26px;height:3px;background:#fff;border-radius:2px}

/* ===== HERO ===== */
.hero{background:linear-gradient(120deg,#1a1d24 0%,#2a2f3a 60%,#3a3326 100%);color:#fff;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-80px;top:50%;transform:translateY(-50%);
  width:520px;height:520px;background:radial-gradient(circle,var(--yellow) 0%,transparent 65%);opacity:.13}
.hero .container{position:relative;z-index:2;padding:64px 18px}
.hero__tag{display:inline-block;background:rgba(245,181,0,.15);color:var(--yellow);
  font-weight:700;font-size:13px;padding:6px 14px;border-radius:20px;margin-bottom:18px;letter-spacing:.3px}
.hero h1{max-width:760px;margin-bottom:18px}
.hero h1 em{color:var(--yellow);font-style:normal}
.hero p{max-width:600px;color:#c9ced6;font-size:18px;margin-bottom:28px}
.hero__btns{display:flex;gap:14px;flex-wrap:wrap}
.hero__feats{display:flex;gap:34px;margin-top:40px;flex-wrap:wrap}
.hero__feat b{display:block;font-size:28px;color:var(--yellow);font-weight:900}
.hero__feat small{color:#9aa1ac;font-size:13.5px}

/* ===== ПРЕИМУЩЕСТВА ===== */
.adv{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.adv__item{background:var(--white);border-radius:var(--radius);padding:24px 20px;box-shadow:var(--shadow);border-top:3px solid var(--yellow)}
.adv__item h3{margin-bottom:8px;font-size:17px}
.adv__item p{color:var(--gray);font-size:14.5px;margin:0}

/* ===== КАТАЛОГ-СЕТКА ===== */
.grid{display:grid;gap:18px}
.grid--cat{grid-template-columns:repeat(4,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  transition:.18s;display:flex;flex-direction:column;border:1px solid var(--line)}
.card:hover{box-shadow:var(--shadow-h);transform:translateY(-3px)}
.card__img{aspect-ratio:4/3;background:#eceff3 center/cover no-repeat;display:flex;align-items:center;justify-content:center;color:#aab;font-size:13px}
.card__b{padding:16px 16px 18px;display:flex;flex-direction:column;flex:1}
.card__b h3{font-size:16px;margin-bottom:6px}
.card__b p{font-size:13.5px;color:var(--gray);margin-bottom:12px}
.card__price{font-weight:800;font-size:18px;color:var(--ink);margin-top:auto}
.card__price small{font-weight:500;font-size:12.5px;color:var(--gray)}
.card__more{margin-top:12px;font-weight:700;color:var(--yellow-d);font-size:14px}

/* ===== ХЛЕБНЫЕ КРОШКИ ===== */
.crumbs{font-size:13.5px;color:var(--gray);padding:14px 0}
.crumbs a:hover{color:var(--yellow-d)}
.crumbs span{color:var(--ink)}

/* ===== КАРТОЧКА ТОВАРА ===== */
.product{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:start}
.product__media{background:#eceff3;border-radius:var(--radius);aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;color:#aab}
.product h1{margin-bottom:10px}
.product__price{font-size:30px;font-weight:900;margin:14px 0}
.product__price small{font-size:15px;font-weight:500;color:var(--gray)}
.spec{width:100%;border-collapse:collapse;margin:18px 0;font-size:14.5px}
.spec td,.spec th{padding:9px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.spec th{color:var(--gray);width:52%;font-weight:500}
.spec td:first-child{color:var(--gray);width:52%}
.spec td:last-child{font-weight:600}
.spec th + td{font-weight:600}
.fit{background:#fff7e0;border:1px solid #f2db8a;border-radius:8px;padding:12px 14px;font-size:14px;margin:14px 0}
.fit b{color:var(--yellow-d)}

/* ===== СПИСОК ПОЗИЦИЙ (запчасти) ===== */
.nomen{columns:2;column-gap:34px;list-style:none;margin:10px 0}
.nomen li{padding:8px 0 8px 22px;border-bottom:1px solid var(--line);position:relative;break-inside:avoid;font-size:14.5px}
.nomen li::before{content:"▸";position:absolute;left:0;color:var(--yellow-d)}

/* ===== CTA-ПОЛОСА ===== */
.ctaband{background:var(--ink);color:#fff;border-radius:14px;padding:36px 34px;display:flex;
  justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.ctaband h2{margin:0;color:#fff}
.ctaband p{color:#9aa1ac;margin:6px 0 0}

/* ===== ПОДВАЛ ===== */
.footer{background:var(--ink);color:#9aa1ac;padding:46px 0 24px;font-size:14px;margin-top:50px}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:30px;padding-bottom:28px;border-bottom:1px solid #2e323b}
.footer h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer a{color:#9aa1ac;display:block;padding:4px 0}
.footer a:hover{color:var(--yellow)}
.footer__logo{font-weight:900;font-size:21px;color:#fff;margin-bottom:10px}
.footer__logo b{color:var(--yellow)}
.footer__bottom{padding-top:18px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font-size:12.5px;color:#6b7079}

/* ===== WhatsApp плавающая ===== */
.wa-float{position:fixed;right:20px;bottom:20px;width:58px;height:58px;background:var(--green);
  border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 20px rgba(37,211,102,.5);z-index:60;transition:.15s}
.wa-float:hover{transform:scale(1.08)}
.wa-float svg{width:32px;height:32px;fill:#fff}

/* ===== КАЛЬКУЛЯТОР ===== */
.calc{background:var(--white);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:26px;max-width:760px}
.calc__row{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:16px}
.calc__field{flex:1;min-width:180px}
.calc label{display:block;font-weight:600;font-size:13.5px;margin-bottom:6px;color:var(--gray)}
.calc select,.calc input[type=number]{width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:9px;font:inherit;font-size:15px;background:#fff;color:var(--ink)}
.calc select:focus,.calc input:focus{outline:none;border-color:var(--yellow)}
.calc__units{display:flex;gap:8px}
.calc__units button{flex:1;padding:11px;border:1.5px solid var(--line);background:#fff;border-radius:9px;font:inherit;font-weight:600;cursor:pointer;transition:.12s}
.calc__units button.on{background:var(--yellow);border-color:var(--yellow)}
.calc__result{background:var(--ink);color:#fff;border-radius:11px;padding:20px 22px;margin-top:6px;display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap}
.calc__result b{font-size:26px;font-weight:900;color:var(--yellow);display:block;line-height:1.1}
.calc__result small{color:#9aa1ac;font-size:12.5px}
.calc__note{font-size:12.5px;color:var(--gray);margin-top:12px}
@media(max-width:560px){.calc__result{flex-direction:column;align-items:flex-start}}

/* ===== АДАПТИВ ===== */
@media(max-width:960px){
  .adv,.grid--cat{grid-template-columns:repeat(2,1fr)}
  .grid--3{grid-template-columns:repeat(2,1fr)}
  .product{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr}
}
@media(max-width:980px){
  .nav,.header__phone small{display:none}
  .burger{display:flex}
  .nav.open{display:flex;position:absolute;top:72px;left:0;right:0;flex-direction:column;background:var(--ink-2);padding:14px 18px;gap:6px;box-shadow:var(--shadow)}
}
@media(max-width:720px){
  .topbar>.container>span{display:none}
  .topbar .container{justify-content:flex-end}
  .topbar__r{gap:12px}
  .nomen{columns:1}
  .hero__feats{gap:22px}
  .hero .container{padding:44px 18px}
  .ctaband{flex-direction:column;align-items:flex-start}
  .header .container{gap:12px}
  .logo{font-size:20px}
}