:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --surface-2: #fbfbfc;
  --ink: #111827;
  --ink-2: #374151;
  --muted: #6b7280;
  --line: #e5e7eb;
  --line-2: #d1d5db;
  --accent: #0b4f8a;
  --accent-ink: #ffffff;
  --accent-soft: #e8f1f9;
  --ok: #0f7a4d;
  --warn: #9a3412;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(17, 24, 39, .06), 0 8px 24px rgba(17, 24, 39, .05);
  --shadow-sm: 0 1px 2px rgba(17, 24, 39, .07);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }

header.top {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(160%) blur(8px);
  border-bottom: 1px solid var(--line);
}
header.top .wrap { display: flex; align-items: center; gap: 14px; min-height: 60px; }

.logo {
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -.5px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: none;
}
.logo span { color: var(--accent); }
.logo svg { width: 22px; height: 22px; flex: none; color: var(--accent); }

.grow { flex: 1; }

.nav { display: flex; gap: 16px; align-items: center; color: var(--muted); font-size: 14px; }
.nav a:hover { color: var(--accent); }

.topsearch { flex: 1; max-width: 420px; position: relative; }
.topsearch input { width: 100%; padding-left: 36px; }
.topsearch svg {
  position: absolute; left: 11px; top: 50%; transform: translateY(-50%);
  width: 16px; height: 16px; color: var(--muted); pointer-events: none;
}

main.wrap { padding-bottom: 40px; }

h1 { font-size: 30px; line-height: 1.2; margin: 26px 0 8px; letter-spacing: -.7px; font-weight: 800; }
h2 { font-size: 19px; margin: 30px 0 14px; letter-spacing: -.3px; font-weight: 700; }
p { margin: 0 0 12px; }
.lead { color: var(--ink-2); font-size: 16px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow-sm);
}

.hero {
  background: linear-gradient(180deg, #ffffff 0%, var(--surface-2) 100%);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
  box-shadow: var(--shadow);
}

.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.row.tight { gap: 8px; }

.picker { display: grid; grid-template-columns: 1fr 1fr 140px auto; gap: 10px; }
@media (max-width: 760px) { .picker { grid-template-columns: 1fr 1fr; } .picker button { grid-column: 1 / -1; } }

select, input, button {
  font: inherit;
  padding: 11px 13px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
  min-width: 0;
}
select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 17px) 52%, calc(100% - 12px) 52%; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; padding-right: 34px; }
select:focus, input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
select:disabled { background-color: var(--surface-2); color: var(--muted); }

button {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: transparent;
  cursor: pointer;
  font-weight: 650;
  transition: filter .15s ease;
}
button:hover:not(:disabled) { filter: brightness(1.08); }
button:disabled { opacity: .4; cursor: default; }
button.ghost { background: var(--surface); color: var(--ink-2); border-color: var(--line-2); font-weight: 600; }
button.ghost:hover { border-color: var(--accent); color: var(--accent); }

.tabs { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 2px; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tab {
  background: var(--surface);
  color: var(--ink-2);
  border: 1px solid var(--line-2);
  border-radius: 999px;
  padding: 8px 15px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}
.tab.on { background: var(--accent); color: #fff; border-color: transparent; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-2);
  background: var(--surface);
  white-space: nowrap;
}
a.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip.soft { background: var(--accent-soft); border-color: transparent; color: var(--accent); font-weight: 600; }

.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }

.part {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 15px;
  box-shadow: var(--shadow-sm);
  transition: border-color .15s ease, transform .15s ease;
}
.part:hover { border-color: var(--accent); transform: translateY(-1px); color: inherit; }
.part b { font-size: 15px; font-weight: 650; line-height: 1.35; }
.part .fits { font-size: 12.5px; color: var(--muted); }
.part .foot { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; margin-top: auto; padding-top: 6px; }

.oem { font-family: var(--mono); font-size: 12px; color: var(--muted); letter-spacing: .2px; }
.price { font-weight: 800; font-size: 16px; color: var(--ok); white-space: nowrap; }
.noprice { color: var(--muted); font-size: 14px; }

.offers { width: 100%; border-collapse: collapse; }
.offers td { padding: 13px 10px; border-top: 1px solid var(--line); vertical-align: middle; }
.offers tr:first-child td { border-top: 0; }
.offers .shop { font-weight: 650; }
.offers .host { font-size: 12.5px; color: var(--muted); }
.offers .act { text-align: right; white-space: nowrap; }
.offers .best { background: var(--accent-soft); }

.stats { display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--muted); font-size: 13.5px; margin-top: 16px; }
.stats b { color: var(--ink); font-weight: 700; }

.crumbs { display: flex; gap: 6px; flex-wrap: wrap; font-size: 13px; color: var(--muted); margin-top: 18px; }
.crumbs a:hover { color: var(--accent); }

.panel { display: grid; gap: 18px; grid-template-columns: minmax(0, 1fr) 320px; align-items: start; }
@media (max-width: 900px) { .panel { grid-template-columns: 1fr; } }

.empty { color: var(--muted); padding: 18px 0; }

footer.bot {
  margin-top: 40px;
  border-top: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  font-size: 13.5px;
  padding: 22px 0 30px;
}
footer.bot .wrap { display: flex; flex-wrap: wrap; gap: 10px 22px; align-items: center; }

@media (max-width: 640px) {
  h1 { font-size: 24px; margin-top: 20px; }
  h2 { font-size: 17px; }
  .hero { padding: 16px; border-radius: 14px; }
  .grid { grid-template-columns: 1fr; }
  .offers td { padding: 11px 6px; }
  .topsearch { display: none; }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --surface: #171b21;
    --surface-2: #1c2128;
    --ink: #e8eaed;
    --ink-2: #c3c8cf;
    --muted: #8b94a1;
    --line: #262c34;
    --line-2: #333b45;
    --accent: #4d9fe0;
    --accent-ink: #0b1116;
    --accent-soft: #16232e;
    --ok: #4ec98a;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .28);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .35);
  }
  header.top { background: rgba(23, 27, 33, .92); }
  .hero { background: linear-gradient(180deg, var(--surface) 0%, var(--surface-2) 100%); }
}