:root {
  --bg: #f6f8fb; --card: #fff; --text: #1d2433; --sub: #5b6578; --line: #e3e8f0;
  --brand: #2563eb; --brand-soft: #e8efff;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1420; --card: #171e2d; --text: #e7ecf5; --sub: #9aa6bb; --line: #263046; --brand: #5b8cff; --brand-soft: #1d2a48; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.7;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--brand); }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
header.top { background: var(--card); border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 58px; flex-wrap: wrap; }
.logo { font-weight: 800; font-size: 20px; color: var(--text); text-decoration: none; }
.logo span { color: var(--brand); }
nav.top a { margin-left: 16px; color: var(--sub); text-decoration: none; font-size: 15px; }
h1 { font-size: 30px; line-height: 1.25; margin: 28px 0 8px; }
.lead { color: var(--sub); margin: 0 0 22px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 22px; margin-bottom: 20px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; margin-bottom: 24px; }
.tool-link { display: block; text-decoration: none; color: var(--text); background: var(--card);
  border: 1px solid var(--line); border-radius: 14px; padding: 18px; transition: border-color .15s, transform .15s; }
.tool-link:hover { border-color: var(--brand); transform: translateY(-2px); }
.tool-link b { display: block; font-size: 18px; margin-bottom: 4px; }
.tool-link small { color: var(--sub); }
.drop { display: block; border: 2px dashed var(--line); border-radius: 14px; padding: 34px 16px; text-align: center;
  cursor: pointer; background: var(--brand-soft); transition: border-color .15s; }
.drop.over, .drop:hover { border-color: var(--brand); }
.drop strong { display: block; font-size: 18px; }
.drop small { color: var(--sub); }
.drop input { display: none; }
.opts { display: flex; flex-wrap: wrap; gap: 14px 22px; align-items: center; margin: 16px 0 0; }
.opts label { display: flex; align-items: center; gap: 8px; font-size: 15px; }
input[type=number], input[type=text], input[type=date], select, textarea { font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; max-width: 100%; }
textarea { width: 100%; min-height: 180px; resize: vertical; font-family: ui-monospace, Consolas, monospace; font-size: 14px; }
input[type=number] { width: 130px; }
.btn { font: inherit; border: 0; border-radius: 10px; padding: 9px 18px; background: var(--brand); color: #fff; cursor: pointer; text-decoration: none; display: inline-block; }
.btn.ghost { background: transparent; color: var(--brand); border: 1px solid var(--brand); }
.btn:disabled { opacity: .5; cursor: default; }
.row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.results { list-style: none; padding: 0; margin: 16px 0 0; }
.results li { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 0; border-top: 1px solid var(--line); flex-wrap: wrap; }
.results .name { overflow-wrap: anywhere; }
.results .meta { color: var(--sub); font-size: 14px; }
.status { color: var(--sub); font-size: 14px; margin-top: 10px; min-height: 1.5em; }
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; margin-top: 14px; }
.stats div { background: var(--bg); border-radius: 10px; padding: 10px 12px; }
.stats b { display: block; font-size: 24px; overflow-wrap: anywhere; }
.stats small { color: var(--sub); }
.ad-slot { min-height: 90px; margin: 20px 0; }
article h2 { font-size: 22px; margin: 6px 0 10px; }
article h3 { font-size: 17px; margin: 18px 0 4px; }
article p, article li { color: var(--sub); }
.related a { display: inline-block; margin: 4px 14px 4px 0; }
footer { color: var(--sub); font-size: 14px; padding: 26px 0 40px; text-align: center; }
footer a { color: var(--sub); margin: 0 8px; }
.qr-out { margin-top: 16px; display: flex; justify-content: center; }
.qr-out img, .qr-out canvas { background: #fff; padding: 12px; border-radius: 10px; }