:root {
  color-scheme: dark;
  --bg: #060a10;
  --panel: #0c131d;
  --panel-2: #101a25;
  --line: #223240;
  --line-soft: #172532;
  --text: #e5eef4;
  --muted: #7f929e;
  --cyan: #55e6e1;
  --green: #7ee0a2;
  --red: #ff8581;
  --amber: #f0bd62;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { background: var(--bg); }
body { margin: 0; min-width: 320px; color: var(--text); background: var(--bg); font-size: 15px; line-height: 1.75; }
a { color: var(--cyan); text-decoration: none; }
a:hover, a:focus-visible { text-decoration: underline; }
a:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
.notes-shell { width: min(1080px, calc(100% - 40px)); margin: 0 auto; padding: 22px 0 40px; }

.topbar { display: flex; align-items: center; gap: 28px; min-height: 48px; border-bottom: 1px solid var(--line-soft); }
.brand { display: inline-flex; flex-direction: column; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand b { font-size: 13px; letter-spacing: .08em; }
.brand small { color: var(--muted); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
.back-link { color: var(--muted); font-size: 12px; }
.back-link:hover { color: var(--text); }

.archive { display: grid; gap: 12px; margin-top: 28px; padding: 0; list-style: none; }
.archive-item a { display: block; padding: 20px 22px; border: 1px solid var(--line-soft); border-radius: 10px; background: var(--panel); color: var(--text); }
.archive-item a:hover { border-color: var(--cyan); background: var(--panel-2); text-decoration: none; }
.archive-item time { color: var(--cyan); font-size: 12px; letter-spacing: .06em; }
.archive-item h2 { margin-top: 6px; font-size: 19px; }
.archive-item p { margin: 8px 0 0; color: #a7b8c2; font-size: 14px; }
.archive-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.archive-tags span { padding: 1px 8px; border: 1px solid var(--line); border-radius: 4px; color: var(--muted); font-size: 11px; }

.product-nav { display: flex; flex-wrap: wrap; gap: 22px; margin-left: auto; font-size: 12px; }
.product-nav a { padding: 15px 0 13px; color: var(--muted); border-bottom: 2px solid transparent; }
.product-nav a:hover, .product-nav a.active { color: var(--text); text-decoration: none; border-bottom-color: var(--cyan); }

.hero { padding: 40px 4px 28px; border-bottom: 1px solid var(--line-soft); }
.eyebrow { display: block; color: var(--cyan); font-size: 10px; letter-spacing: .18em; text-transform: uppercase; }
h1, h2, h3 { margin: 0; line-height: 1.25; }
h1 { margin-top: 10px; font-size: clamp(28px, 4vw, 44px); }
.hero p { max-width: 760px; margin: 14px 0 0; color: #a7b8c2; }
.meta { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 16px; color: var(--muted); font-size: 12px; }

.toc { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 0; padding: 0; list-style: none; }
.toc a { display: inline-block; padding: 5px 12px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 12px; }
.toc a:hover { color: var(--text); border-color: var(--cyan); text-decoration: none; }

.report { margin-top: 30px; padding: 26px 28px; border: 1px solid var(--line-soft); border-radius: 10px; background: var(--panel); }
.report h2 { font-size: 22px; }
.report h3 { margin: 26px 0 8px; font-size: 16px; color: var(--cyan); }
.report p, .report ul, .report ol { margin: 10px 0; color: #c9d6de; }
.report li + li { margin-top: 4px; }
.summary { margin: 16px 0; padding: 14px 16px; border-left: 3px solid var(--cyan); background: var(--panel-2); color: var(--text); }
.warn { border-left-color: var(--amber); }

.table-wrap { overflow-x: auto; margin: 12px 0; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
caption { padding-bottom: 6px; color: var(--muted); font-size: 12px; text-align: left; }
th, td { padding: 9px 12px; border-bottom: 1px solid var(--line-soft); text-align: left; vertical-align: top; }
th { color: var(--muted); font-weight: 600; background: var(--panel-2); }
.tag { display: inline-block; padding: 1px 8px; border-radius: 4px; font-size: 12px; font-weight: 600; }
.tag.high { color: #2a0b0a; background: var(--red); }
.tag.mid { color: #2a1d05; background: var(--amber); }
.tag.low { color: #062014; background: var(--green); }

.sources { font-size: 13px; }
.sources li { word-break: break-word; }
footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; margin-top: 30px; padding-top: 16px; border-top: 1px solid var(--line-soft); color: var(--muted); font-size: 12px; }

@media (max-width: 700px) {
  .topbar { flex-wrap: wrap; gap: 4px; }
  .product-nav { margin-left: 0; gap: 16px; }
  .report { padding: 20px 16px; }
}