:root {
    --ink: #0f1b2d;
    --muted: #5b6678;
    --line: #e3e8ef;
    --bg: #f7f9fc;
    --card: #ffffff;
    --accent: #0a6cff;
    --accent-deep: #0050c8;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.6;
}
a { color: var(--accent); }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }

.nav { background: var(--card); border-bottom: 1px solid var(--line); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.35rem; color: var(--ink); text-decoration: none; letter-spacing: .02em; }
.brand svg { width: 34px; height: 34px; }
.btn { display: inline-block; background: var(--accent); color: #fff; text-decoration: none; font-weight: 600; padding: 11px 22px; border-radius: 8px; }
.btn:hover { background: var(--accent-deep); }

.hero { padding: 96px 0 80px; background: linear-gradient(160deg, #0f1b2d 0%, #12305e 100%); color: #fff; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.15; max-width: 720px; margin-bottom: 18px; }
.hero p { font-size: 1.15rem; color: #c9d6ea; max-width: 620px; margin-bottom: 32px; }

section { padding: 72px 0; }
section h2 { font-size: 1.8rem; margin-bottom: 28px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 26px; }
.card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.card p { color: var(--muted); }

.contact { background: var(--card); border-top: 1px solid var(--line); }
.contact dl { display: grid; grid-template-columns: max-content 1fr; gap: 10px 24px; }
.contact dt { font-weight: 600; }
.contact dd { color: var(--muted); }

.foot { padding: 28px 0; font-size: .9rem; color: var(--muted); text-align: center; }

.doc { max-width: 760px; margin: 0 auto; padding: 64px 20px; }
.doc h1 { font-size: 2.2rem; margin-bottom: 24px; }
.doc h2 { font-size: 1.35rem; margin: 40px 0 12px; }
.doc p, .doc li { margin-bottom: 10px; }
.doc ul { padding-left: 22px; }
.doc .product { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 24px; margin-top: 12px; }
.doc table { border-collapse: collapse; width: 100%; }
.doc th, .doc td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.doc th { width: 40%; }

@media (max-width: 560px) {
    .contact dl { grid-template-columns: 1fr; gap: 2px; }
    .contact dd { margin-bottom: 10px; }
    .doc th { width: auto; }
}