:root {
  --blue: #0f4c81;
  --blue-dark: #0b2f4d;
  --green: #22c55e;
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #1b2733;
  --muted: #566878;
  --line: #dbe4ec;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0c1620; --card: #12202d; --text: #e6eef5; --muted: #9db0c0; --line: #24394b; --blue: #5aa9e6; color-scheme: dark; }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 400 1rem/1.7 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-text-size-adjust: 100%; }
a { color: var(--blue); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--green); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--blue-dark); color: #fff; padding: 8px 12px; border-radius: 8px; z-index: 10; }
.skip:focus { left: 8px; }

.top { background: var(--blue-dark); color: #fff; }
.top-in { max-width: 1080px; margin: 0 auto; padding: 14px max(16px, env(safe-area-inset-left)) 14px max(16px, env(safe-area-inset-right)); display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-weight: 800; letter-spacing: .02em; font-size: 1.15rem; }
.brand img { width: 32px; height: 32px; }
.brand b { color: var(--green); }
.top a.back { color: #cfe3f5; font-size: .9rem; text-decoration: none; font-weight: 600; }
.top a.back:hover { color: #fff; text-decoration: underline; }

.shell { max-width: 1080px; margin: 0 auto; padding: 28px max(16px, env(safe-area-inset-left)) 56px max(16px, env(safe-area-inset-right)); display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 32px; align-items: start; }
.side { position: sticky; top: 16px; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px; }
.side h2 { margin: 0 0 8px; font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.side ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.side a { display: block; padding: 8px 10px; border-radius: 8px; text-decoration: none; color: var(--text); font-size: .92rem; }
.side a:hover { background: color-mix(in srgb, var(--blue) 10%, transparent); }
.side a[aria-current="page"] { background: var(--blue); color: #fff; font-weight: 700; }

.doc { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: clamp(20px, 4vw, 40px); min-width: 0; }
.crumbs { font-size: .85rem; color: var(--muted); margin: 0 0 12px; }
.crumbs a { color: var(--muted); }
h1 { margin: 0 0 6px; font-size: clamp(1.6rem, 4vw, 2.25rem); line-height: 1.2; color: var(--text); text-wrap: balance; }
.meta { margin: 0 0 22px; color: var(--muted); font-size: .9rem; }
.lead { font-size: 1.08rem; color: var(--text); padding: 14px 16px; border-left: 4px solid var(--green); background: color-mix(in srgb, var(--green) 9%, transparent); border-radius: 0 10px 10px 0; margin: 0 0 24px; }
h2 { margin: 32px 0 8px; font-size: 1.25rem; line-height: 1.3; text-wrap: balance; }
h3 { margin: 20px 0 6px; font-size: 1.05rem; }
p, li { max-width: 72ch; }
ul, ol { padding-left: 1.3rem; }
li { margin: 4px 0; }
table { width: 100%; border-collapse: collapse; margin: 12px 0 18px; font-size: .92rem; display: block; overflow-x: auto; }
th, td { text-align: left; padding: 10px 12px; border: 1px solid var(--line); vertical-align: top; }
th { background: color-mix(in srgb, var(--blue) 10%, transparent); white-space: nowrap; }
.note { margin: 20px 0; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: color-mix(in srgb, var(--blue) 6%, transparent); font-size: .92rem; color: var(--muted); }
.btn { display: inline-block; border: 0; background: var(--blue); color: #fff; padding: 10px 16px; border-radius: 10px; font: 700 .92rem system-ui, sans-serif; cursor: pointer; text-decoration: none; }
.btn:hover { filter: brightness(1.1); }

.foot { border-top: 1px solid var(--line); background: var(--card); }
.foot-in { max-width: 1080px; margin: 0 auto; padding: 22px max(16px, env(safe-area-inset-left)) 28px max(16px, env(safe-area-inset-right)); font-size: .88rem; color: var(--muted); display: grid; gap: 10px; }
.foot-in nav { display: flex; flex-wrap: wrap; gap: 6px 16px; }

@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; gap: 18px; }
  .side { position: static; }
  .side ul { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
}
@media print {
  .top, .side, .foot, .skip, .btn { display: none; }
  .shell { display: block; padding: 0; }
  .doc { border: 0; padding: 0; }
  body { background: #fff; color: #000; }
}