/* ArtroCare Home — базовые стили */
:root{
  --bg:#ffffff;
  --text:#202124;
  --muted:#5f6368;
  --primary:#2a7f62;
  --primary-600:#256e55;
  --accent:#efb436;
  --surface:#f6f7f8;
  --shadow:0 6px 18px rgba(0,0,0,.08);
  --radius:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;color:var(--text);background:var(--bg);line-height:1.55}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-600)}
.container{max-width:1100px;margin:0 auto;padding:0 16px}
.lead{font-size:1.125rem;color:var(--muted)}
.small{font-size:.9rem}
.muted{color:var(--muted)}
.mt{margin-top:32px}
.center{text-align:center}
.rounded{border-radius:var(--radius)}
.shadow{box-shadow:var(--shadow)}

/* Header */
.site-header{position:sticky;top:0;background:#fff;border-bottom:1px solid #ececec;z-index:10}
.header-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px}
.brand-name{font-weight:700;color:var(--text)}
.brand-logo{object-fit:contain}
.site-nav ul{display:flex;align-items:center;gap:14px;list-style:none;margin:0;padding:0}
.site-nav a{padding:8px 10px;border-radius:8px}
.site-nav a.active{background:var(--surface)}
.nav-toggle{display:none;background:none;border:none;font-size:1.4rem}

/* Buttons */
.btn{display:inline-block;padding:12px 18px;border-radius:12px;border:1px solid transparent;font-weight:600}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-600)}
.btn-ghost{border-color:var(--primary);color:var(--primary);background:#fff}
.btn-ghost:hover{background:var(--surface)}

/* Layout */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:1fr 1fr}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid #eee;border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.highlight{border-color:var(--accent)}

/* Sections */
.hero{position:relative}
.hero img{width:100%;height:clamp(260px,45vw,540px);object-fit:cover;filter:saturate(1.05)}
.hero-content{position:relative;margin-top:-120px;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.2) blur(2px);padding:22px;border-radius:18px;box-shadow:var(--shadow)}
.hero h1{margin:.2em 0;font-size:clamp(1.5rem,3.6vw,2.4rem)}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}

.features .feature{text-align:center;padding:18px;border-radius:16px;background:var(--surface)}
.features img{margin:0 auto 10px}

.checklist{list-style:none;padding:0;margin:0}
.checklist li{padding-left:28px;position:relative;margin:8px 0}
.checklist li::before{content:"✓";position:absolute;left:0;top:0;color:var(--primary)}

.bullets{padding-left:18px}
.bullets li{margin:8px 0}
.numbered{counter-reset:n}
.numbered li{counter-increment:n;margin:8px 0}
.numbered li::marker{content:counters(n, ".") ". "}

.footer-grid{display:grid;grid-template-columns:2fr 1fr 2fr;gap:16px;padding:24px 0}
.footer-nav{list-style:none;margin:0;padding:0}
.footer-nav li{margin:8px 0}
.site-footer{background:var(--surface);margin-top:40px;border-top:1px solid #ececec}

/* Forms */
.form{max-width:720px;margin:0 auto}
.form-row{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.form-row input[type=text],
.form-row input[type=number],
.form-row select,
.form-row textarea{padding:12px 12px;border:1px solid #ddd;border-radius:10px;font-size:1rem}
.form-actions{display:flex;align-items:center;gap:12px}
fieldset{border:1px dashed #ddd;border-radius:10px;padding:10px}
legend{padding:0 6px}

/* Pricing */
.pricing .price-title{margin:.2em 0}
.pricing .price{font-size:1.6rem;font-weight:800;color:var(--primary)}

/* Utilities */
.problems img,.team img{border-radius:var(--radius)}
.testimonial blockquote{margin:0 0 10px 0;font-style:italic}

/* Responsive */
@media (max-width: 920px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width: 640px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .hero-content{margin-top:-80px}
  .nav-toggle{display:block}
  .site-nav{position:absolute;inset:64px 0 auto 0;background:#fff;border-bottom:1px solid #ececec;transform:translateY(-120%);transition:transform .2s}
  .site-nav.open{transform:translateY(0)}
  .site-nav ul{flex-direction:column;align-items:stretch;padding:10px}
}