:root {
  --bg: #ffffff;
  --surface: #f3f6fa;
  --surface-2: #e8eef6;
  --text: #0b1220;
  --muted: #55606f;
  --line: #d9e0ea;
  --accent: #1568c4;
  --accent-ink: #ffffff;
  --accent-soft: #e3f0fd;
  --chart: #208aef;
  --chart-band: rgba(32, 138, 239, 0.16);
  --warn-bg: #fff6e5;
  --warn-line: #f0c36d;
  --warn-text: #5c3d00;
  --radius: 16px;
  --max: 1080px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0e14;
    --surface: #131a23;
    --surface-2: #1b2430;
    --text: #f2f5f8;
    --muted: #a7b1be;
    --line: #263140;
    --accent: #6db6ff;
    --accent-ink: #06121f;
    --accent-soft: #12283f;
    --chart: #4ba3f5;
    --chart-band: rgba(75, 163, 245, 0.2);
    --warn-bg: #2a2110;
    --warn-line: #6b5420;
    --warn-text: #f3d99a;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
}
img, svg { max-width: 100%; height: auto; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--chart); outline-offset: 3px; border-radius: 6px; }
.skip {
  position: absolute; left: 16px; top: -60px; background: var(--accent); color: var(--accent-ink);
  padding: 10px 14px; border-radius: 10px; text-decoration: none; z-index: 10;
}
.skip:focus { top: 12px; }
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.15rem; color: var(--text); text-decoration: none; letter-spacing: -0.01em; }
.brand svg { width: 28px; height: 28px; flex: none; }
.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a { color: var(--muted); text-decoration: none; padding: 8px 12px; border-radius: 10px; font-size: 0.95rem; }
.nav a:hover { color: var(--text); background: var(--surface); }
.nav a[aria-current="page"] { color: var(--text); background: var(--surface); font-weight: 600; }

/* Hero */
.hero { padding: 56px 0 40px; }
.hero-grid { display: grid; gap: 36px; align-items: center; }
@media (min-width: 900px) { .hero-grid { grid-template-columns: 1.05fr 0.95fr; gap: 48px; } .hero { padding: 80px 0 64px; } }
.eyebrow {
  display: inline-block; background: var(--accent-soft); color: var(--accent);
  font-weight: 600; font-size: 0.85rem; padding: 6px 12px; border-radius: 999px; margin: 0 0 18px;
}
h1 { font-size: clamp(2.2rem, 5.4vw, 3.6rem); line-height: 1.06; letter-spacing: -0.03em; margin: 0 0 18px; }
.lede { font-size: clamp(1.1rem, 2vw, 1.3rem); color: var(--muted); margin: 0 0 26px; max-width: 34em; }
.status { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.pill {
  display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--line);
  background: var(--surface); padding: 10px 16px; border-radius: 999px; font-weight: 600; font-size: 0.95rem;
}
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--chart); flex: none; }
.btn {
  display: inline-block; background: var(--accent); color: var(--accent-ink); text-decoration: none;
  padding: 11px 18px; border-radius: 999px; font-weight: 600; font-size: 0.95rem;
}
.btn:hover { filter: brightness(1.08); }

/* Chart card */
.chart-card { background: var(--surface); border: 1px solid var(--line); border-radius: 22px; padding: 18px 18px 12px; }
.chart-card figcaption { color: var(--muted); font-size: 0.85rem; margin-top: 6px; text-align: center; }
.c-grid { stroke: var(--line); stroke-width: 1; }
.c-past { fill: none; stroke: var(--text); stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.c-dot { fill: var(--text); }
.c-band { fill: var(--chart-band); }
.c-fore { fill: none; stroke: var(--chart); stroke-width: 3; stroke-dasharray: 7 7; stroke-linecap: round; }
.c-mark { fill: var(--bg); stroke: var(--chart); stroke-width: 3; }
.c-today { stroke: var(--muted); stroke-width: 1.5; stroke-dasharray: 3 5; }
.c-label { fill: var(--muted); font-size: 13px; font-family: inherit; }
.c-label-strong { fill: var(--text); font-size: 13px; font-weight: 600; font-family: inherit; }

/* Sections */
section { padding: 48px 0; }
section + section { border-top: 1px solid var(--line); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); letter-spacing: -0.02em; line-height: 1.2; margin: 0 0 10px; }
.section-intro { color: var(--muted); margin: 0 0 28px; max-width: 40em; }
.steps { display: grid; gap: 16px; list-style: none; padding: 0; margin: 0; counter-reset: step; }
@media (min-width: 700px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .steps { grid-template-columns: repeat(4, 1fr); } }
.steps li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 20px; counter-increment: step; }
.steps li::before {
  content: counter(step); display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%;
  background: var(--accent); color: var(--accent-ink); font-weight: 700; margin-bottom: 12px;
}
.steps h3, .cards h3 { font-size: 1.1rem; margin: 0 0 6px; letter-spacing: -0.01em; }
.steps p, .cards p { margin: 0; color: var(--muted); font-size: 0.98rem; }
.cards { display: grid; gap: 16px; }
@media (min-width: 800px) { .cards { grid-template-columns: repeat(3, 1fr); } }
.card { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 20px; }
.notice {
  background: var(--warn-bg); border: 1px solid var(--warn-line); color: var(--warn-text);
  border-radius: var(--radius); padding: 20px 22px;
}
.notice h2 { font-size: 1.2rem; margin-bottom: 8px; color: inherit; }
.notice p { margin: 0 0 8px; }
.notice p:last-child { margin-bottom: 0; }
.notice a { color: inherit; }
.contact-grid { display: grid; gap: 16px; }
@media (min-width: 700px) { .contact-grid { grid-template-columns: repeat(2, 1fr); } }
.small { font-size: 0.9rem; color: var(--muted); }

/* Document pages */
.doc { padding: 48px 0 64px; }
.doc .wrap { max-width: 760px; }
.doc h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); margin-bottom: 8px; }
.doc .meta { color: var(--muted); margin: 0 0 28px; }
.doc h2 { font-size: 1.3rem; margin: 34px 0 8px; }
.doc p, .doc li { color: var(--text); }
.doc ul { padding-left: 22px; }
.doc li { margin-bottom: 6px; }
.doc .notice { margin: 0 0 8px; }
details { border: 1px solid var(--line); border-radius: 14px; padding: 4px 18px; margin-bottom: 12px; background: var(--surface); }
summary { cursor: pointer; font-weight: 600; padding: 12px 0; }
details p { margin: 0 0 14px; color: var(--muted); }

/* Footer */
.site-footer { border-top: 1px solid var(--line); background: var(--surface); padding: 32px 0 40px; margin-top: 24px; }
.site-footer .cols { display: flex; flex-wrap: wrap; gap: 20px 40px; justify-content: space-between; align-items: flex-start; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 6px 20px; }
.site-footer a { color: var(--muted); font-size: 0.95rem; }
.site-footer p { margin: 0 0 6px; color: var(--muted); font-size: 0.92rem; max-width: 46em; }
.site-footer .legal { margin-top: 22px; border-top: 1px solid var(--line); padding-top: 18px; }