:root {
  --ink: #0b2e33; --muted: #4b6468; --line: #d6e4e5; --bg: #f5fafa; --card: #fff;
  --brand: #0e7c86; --brand-2: #14b8a6; --warn: #b45309; --bad: #b91c1c; --ok: #15803d;
  --gA: #15803d; --gB: #4d7c0f; --gC: #b45309; --gD: #c2410c; --gF: #b91c1c;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --ink: #e6f4f3; --muted: #9db6b8; --line: #23464b; --bg: #071c1f; --card: #0d2a2e; --brand: #2bb5bf; --brand-2: #2dd4bf; }
}
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; color: var(--ink); background: var(--bg); line-height: 1.55; }
a { color: var(--brand); }
.container { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 760px; }
.muted { color: var(--muted); }
.site-header { background: var(--card); border-bottom: 1px solid var(--line); }
.hdr { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 60px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 1.15rem; color: var(--ink); text-decoration: none; }
.hdr nav { display: flex; gap: 14px; flex-wrap: wrap; font-size: .95rem; }
.hdr nav a { color: var(--ink); text-decoration: none; }
.hero { padding: 40px 0 16px; }
.hero h1 { font-size: clamp(1.9rem, 4.5vw, 3rem); line-height: 1.08; margin: 0 0 10px; letter-spacing: -.02em; }
.lede { font-size: 1.15rem; color: var(--muted); margin: 0 0 8px; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .78rem; font-weight: 700; color: var(--brand); margin: 0 0 6px; }
.btn { display: inline-block; border: 0; border-radius: 10px; padding: 11px 18px; font-weight: 700; font-size: 1rem; cursor: pointer; text-decoration: none; background: var(--line); color: var(--ink); }
.btn-primary { background: var(--brand); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: .9rem; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }
.prose { padding: 8px 0 40px; } .prose h2 { margin-top: 2em; } .prose table { width: 100%; border-collapse: collapse; }
.prose th, .prose td { text-align: left; padding: 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table-wrap { overflow-x: auto; }
.site-footer { border-top: 1px solid var(--line); padding: 24px 0 40px; font-size: .92rem; color: var(--muted); background: var(--card); }

/* checker */
.checker { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; padding: 8px 0 40px; }
@media (max-width: 820px) { .checker { grid-template-columns: 1fr; } }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 18px; }
.panel h2 { margin: 0 0 12px; font-size: 1.15rem; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; margin-bottom: 12px; }
label { font-size: .9rem; font-weight: 600; display: flex; flex-direction: column; gap: 4px; }
input, select { font: inherit; padding: 9px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink); min-width: 0; }
.check { flex-direction: row; align-items: center; gap: 6px; font-weight: 500; }
.presets { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { border: 1px solid var(--line); background: var(--bg); color: var(--ink); border-radius: 99px; padding: 4px 10px; font-size: .85rem; cursor: pointer; }
.chip[aria-pressed="true"] { background: var(--brand); color: #fff; border-color: var(--brand); }
.search { position: relative; }
.search input { width: 100%; }
.suggest { position: absolute; z-index: 5; left: 0; right: 0; top: 100%; background: var(--card); border: 1px solid var(--line); border-radius: 8px; margin: 4px 0 0; padding: 4px; list-style: none; max-height: 260px; overflow: auto; box-shadow: 0 10px 30px rgba(0,0,0,.12); }
.suggest li { padding: 8px; border-radius: 6px; cursor: pointer; } .suggest li[aria-selected="true"], .suggest li:hover { background: var(--bg); }
.suggest small { color: var(--muted); }
.stock { list-style: none; padding: 0; margin: 8px 0 0; }
.stock li { display: flex; align-items: center; gap: 8px; padding: 8px 0; border-bottom: 1px solid var(--line); }
.stock .name { flex: 1; min-width: 0; } .stock .name small { display: block; color: var(--muted); }
.qty { display: flex; align-items: center; gap: 4px; } .qty button, .rm { width: 32px; height: 32px; border-radius: 8px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); cursor: pointer; font-size: 1rem; }
.qty input { width: 52px; text-align: center; padding: 6px; }
.empty { color: var(--muted); font-size: .95rem; }
.result-top { display: flex; gap: 16px; align-items: center; }
.grade { width: 96px; height: 96px; border-radius: 20px; display: grid; place-items: center; font-size: 3.4rem; font-weight: 900; color: #fff; flex: none; }
.g-A { background: var(--gA); } .g-B { background: var(--gB); } .g-C { background: var(--gC); } .g-D { background: var(--gD); } .g-F { background: var(--gF); } .g-none { background: var(--line); color: var(--muted); }
.result-title { font-size: 1.3rem; font-weight: 800; margin: 0; } .result-sub { margin: 2px 0 0; color: var(--muted); }
.bar { height: 14px; border-radius: 99px; background: var(--line); overflow: hidden; margin: 6px 0 2px; }
.bar > i { display: block; height: 100%; background: var(--ok); border-radius: 99px; }
.bar.warn > i { background: var(--warn); } .bar.bad > i { background: var(--bad); }
.issues { list-style: none; padding: 0; margin: 12px 0 0; }
.issues li { padding: 8px 10px; border-radius: 8px; margin-bottom: 6px; background: var(--bg); border-left: 4px solid var(--line); }
.issues .critical { border-color: var(--bad); } .issues .major { border-color: var(--warn); } .issues .minor { border-color: #a3a3a3; }
.issues b { text-transform: uppercase; font-size: .72rem; letter-spacing: .08em; margin-right: 6px; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; margin: 12px 0; }
.fact { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 10px; } .fact b { display: block; font-size: 1.1rem; }
.verdict { padding: 14px; border-radius: 12px; background: var(--card); border: 1px solid var(--line); border-left-width: 6px; }
.verdict.ok { border-left-color: var(--ok); } .verdict.caution { border-left-color: var(--warn); } .verdict.no { border-left-color: var(--bad); }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; list-style: none; padding: 0; }
.cards li a { display: block; padding: 10px 12px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; text-decoration: none; color: var(--ink); }
.cards li small { color: var(--muted); display: block; }
.note { font-size: .9rem; color: var(--muted); }