:root {
  --ish-navy: #00364a; --ish-teal: #00aaa2;
  --bg: #fafaf7; --bg-card: #ffffff; --bg-2: #f4f4f0;
  --fg: #0a0a0a; --fg-2: #2f2f2f; --fg-3: #6f6f6f; --fg-4: #a3a3a3;
  --line: #e6e6e0; --accent-deep: #006a64;
  --font-display: 'Rubik', -apple-system, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, 'Segoe UI', sans-serif;
}
[data-theme="dark"] {
  --bg: #0d0e0f; --bg-card: #17181a; --bg-2: #1c1d1f;
  --fg: #f5f5f3; --fg-2: #d4d4d0; --fg-3: #909094; --fg-4: #5e5e62;
  --line: #2a2b2e; --accent-deep: #4dc4be;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-body); background: var(--bg); color: var(--fg-2); line-height: 1.65; }
a { color: var(--accent-deep); text-underline-offset: 2px; }
a:focus-visible { outline: 2px solid var(--ish-teal); outline-offset: 2px; border-radius: 2px; }

.lg-top {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  height: 56px; padding: 0 28px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.lg-brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--fg); }
.lg-brand svg { height: 26px; width: auto; display: block; }
[data-theme="dark"] .lg-brand svg path[fill="#00364a"] { fill: #fff; }
.lg-brand span { font: 500 13px/1 var(--font-display); color: var(--fg-3); padding-left: 12px; border-left: 1px solid var(--line); }
.lg-back { font: 500 13px/1 var(--font-display); color: var(--fg-2); text-decoration: none; padding: 9px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--bg-card); }
.lg-back:hover { border-color: var(--ish-teal); }

.lg-main { max-width: 700px; margin: 0 auto; padding: 56px 28px 96px; }
.lg-main h1 { font: 600 34px/1.15 var(--font-display); letter-spacing: -0.02em; color: var(--fg); }
.lg-lead { margin-top: 12px; font-size: 16px; color: var(--fg-3); max-width: 60ch; }
.lg-main h2 {
  font: 600 19px/1.3 var(--font-display); letter-spacing: -0.01em; color: var(--fg);
  margin: 44px 0 10px; scroll-margin-top: 76px;
}
.lg-main h3 { font: 600 15px/1.4 var(--font-display); color: var(--fg); margin: 22px 0 6px; }
.lg-main p { margin: 0 0 12px; max-width: 68ch; }
.lg-main ul { margin: 0 0 14px 1.1em; max-width: 66ch; }
.lg-main li { margin-bottom: 6px; }
.lg-main li::marker { color: var(--fg-4); }
.lg-main address { font-style: normal; margin-bottom: 12px; }
.lg-main strong { color: var(--fg); font-weight: 600; }
.lg-main code { font-size: .92em; padding: 1px 5px; border-radius: 4px; background: var(--bg-2); }

.lg-glance {
  margin-top: 32px; padding: 22px 24px; border-radius: 14px;
  background: var(--bg-card); border: 1px solid var(--line);
  border-left: 3px solid var(--ish-teal);
}
.lg-glance h2 { margin-top: 0; font-size: 16px; }
.lg-glance ul { margin-bottom: 0; }

.lg-main .lg-toc { margin: 28px 0 0; font-size: 14px; columns: 2; column-gap: 32px; list-style: none; }
.lg-toc li { break-inside: avoid; margin-bottom: 6px; }
.lg-toc a { color: var(--fg-3); text-decoration: none; }
.lg-toc a:hover { color: var(--fg); text-decoration: underline; }

.lg-table { width: 100%; border-collapse: collapse; margin: 6px 0 16px; font-size: 14px; }
.lg-table th, .lg-table td { text-align: left; vertical-align: top; padding: 9px 12px 9px 0; border-bottom: 1px solid var(--line); }
.lg-table th { font: 600 12.5px/1.4 var(--font-display); color: var(--fg-3); }
.lg-table td:first-child { white-space: nowrap; }
.lg-scroll { overflow-x: auto; }

.lg-foot { margin-top: 56px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 13px; color: var(--fg-3); display: flex; gap: 18px; flex-wrap: wrap; }

@media (max-width: 640px) {
  .lg-top { padding: 0 16px; }
  .lg-brand span { display: none; }
  .lg-main { padding: 36px 18px 72px; }
  .lg-main h1 { font-size: 28px; }
  .lg-main .lg-toc { columns: 1; }
  .lg-table td:first-child { white-space: normal; }
}
@media print {
  .lg-top, .lg-toc { display: none; }
  body { background: #fff; color: #000; }
}