:root{--ink:#132027;--muted:#68747c;--line:#d8e0e5;--panel:#fff;--bg:#f4f7f8;--brand:#0b6b78;--accent:#e0b64b;--danger:#b73737;--ok:#1d7a4d}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Arial,Helvetica,sans-serif;line-height:1.5}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
main{max-width:1180px;margin:0 auto;padding:28px 18px 56px}
.site-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 28px;background:#fff;border-bottom:1px solid var(--line)}
.brand{font-size:24px;font-weight:800;letter-spacing:.03em}.brand span{color:var(--brand)}
.main-nav{display:flex;gap:16px;align-items:center;flex-wrap:wrap}.main-nav a{font-weight:700;color:#25343b}.nav-cart,.main-nav a:hover{color:var(--brand)}
.hero{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(280px,.6fr);gap:28px;align-items:center;min-height:520px;padding:56px 0}
.hero h1{font-size:clamp(36px,5vw,68px);line-height:1;margin:8px 0 18px}.hero p{font-size:18px;color:#40515a;max-width:680px}.eyebrow{font-weight:800;color:var(--brand);text-transform:uppercase}
.hero-panel,.panel{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:22px;box-shadow:0 12px 30px rgba(24,44,55,.06)}
.hero-panel{display:grid;gap:14px}.hero-panel strong{font-size:22px}.hero-panel span{padding:13px;border-left:4px solid var(--accent);background:#fbfaf4}
.actions,.checkout-bar{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--brand);border-radius:6px;padding:12px 18px;font-weight:800;cursor:pointer;background:#fff;color:var(--brand)}.btn.primary{background:var(--brand);color:#fff}.btn.ghost{background:transparent}.btn.small{padding:9px 12px}
.section,.band{margin-top:36px}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:16px}.section h2,.section-head h2,.page-head h1{margin:0}
.category-grid,.product-grid,.cards-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.category-tile{background:#fff;border:1px solid var(--line);border-radius:8px;padding:20px;font-weight:800}.category-tile:hover{border-color:var(--brand)}
.product-card{background:#fff;border:1px solid var(--line);border-radius:8px;padding:14px;display:grid;gap:10px}.product-card h3{min-height:48px;margin:0;font-size:18px}
.product-image{aspect-ratio:4/3;background:#e7eef1;border-radius:6px;display:grid;place-items:center;overflow:hidden}.product-image span{font-weight:800;color:#60737c}.product-image img{width:100%;height:100%;object-fit:contain}
.muted{color:var(--muted);font-size:13px}.price{font-size:21px;font-weight:900;color:var(--brand)}.stock{font-size:14px;color:#41555e}
.band{background:#10232b;color:#fff;border-radius:8px;padding:32px}.band p{max-width:760px;color:#d5e2e8}
.page-head{padding:28px 0}.page-head h1{font-size:42px}.page-head p{color:var(--muted);font-size:18px}
.shop-layout{display:grid;grid-template-columns:250px 1fr;gap:24px}.filters{display:flex;flex-direction:column;gap:9px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:16px;height:max-content}.filters a{padding:9px;border-radius:6px}.filters a.active,.filters a:hover{background:#e8f4f5;color:var(--brand)}
.product-detail,.two-col,.checkout-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}.detail-media{min-height:420px}.buy-box{display:flex;gap:10px;align-items:center}.buy-box input,.qty{width:86px}
.table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden}.table th,.table td{text-align:left;border-bottom:1px solid var(--line);padding:12px}.table th{background:#edf3f5}
.form{display:grid;gap:14px}.form label{display:grid;gap:6px;font-weight:700}.form input,.form textarea,.form select,.buy-box input,.qty{border:1px solid var(--line);border-radius:6px;padding:11px;font:inherit}.form textarea{min-height:100px}
.auth-page{display:grid;place-items:center;min-height:60vh}.auth-page .panel{width:min(460px,100%)}
.notice{max-width:1180px;margin:16px auto 0;padding:12px 18px;border-radius:6px;font-weight:800}.notice.success{background:#e4f5ec;color:var(--ok)}.notice.error{background:#fae8e8;color:var(--danger)}
.site-footer{display:flex;justify-content:space-between;gap:24px;padding:28px;background:#0f2028;color:#dce8ed}.site-footer p{margin:5px 0;color:#aebfc7}
@media (max-width:760px){.site-header,.site-footer{align-items:flex-start;flex-direction:column}.hero,.shop-layout,.product-detail,.two-col,.checkout-grid{grid-template-columns:1fr}.hero{min-height:auto;padding:32px 0}.page-head h1{font-size:34px}}