:root {
  --sky-100: oklch(0.92 0.04 228);
  --ink-900: oklch(0.19 0.03 254);
  --ink-700: oklch(0.39 0.04 250);
  --ink-500: oklch(0.56 0.03 248);
  --warm: oklch(0.69 0.19 28);
  --line: oklch(0.83 0.03 234 / 0.75);
  --footer-bg: #121b35;
  --footer-muted: #8591b0;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.subpage {
  margin: 0;
  font-family: "Geist", -apple-system, BlinkMacSystemFont, "SF Pro", "Segoe UI", sans-serif;
  background: var(--sky-100);
  color: var(--ink-900);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
  font-size: 16px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 999;
  padding: 8px 16px;
  background: var(--ink-900);
  color: #fff;
}

.skip-link:focus {
  left: 16px;
  top: 16px;
}

.subpage-header {
  background: rgba(255, 255, 255, 0.72);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.subpage-header-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.subpage-brand img {
  display: block;
  border-radius: 0;
}

.subpage-nav {
  display: flex;
  gap: 20px;
  font-size: 13px;
  font-family: "Geist Mono", ui-monospace, monospace;
  letter-spacing: 0.04em;
}

.subpage-nav a {
  color: var(--ink-700);
  text-decoration: none;
}

.subpage-nav a:hover {
  color: var(--ink-900);
}

.subpage-main {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.subpage-main.legal {
  max-width: 760px;
}

.breadcrumb {
  font-size: 13px;
  color: var(--ink-500);
  margin: 0 0 24px;
}

.breadcrumb a {
  color: var(--ink-700);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--warm);
}

.prose h1 {
  font-size: clamp(1.65rem, 4vw, 2.1rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0 0 12px;
}

.prose .lede {
  font-size: 14px;
  color: var(--ink-500);
  margin: 0 0 32px;
}

.prose h2 {
  font-size: 1.28rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  margin: 2.25rem 0 0.75rem;
  line-height: 1.25;
}

.prose h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
  line-height: 1.3;
}

.prose p {
  margin: 0 0 1rem;
  max-width: 65ch;
}

.prose ul {
  margin: 0 0 1.25rem;
  padding-left: 1.25rem;
}

.prose li {
  margin-bottom: 0.4rem;
}

.prose a {
  color: var(--ink-900);
  text-decoration: underline;
  text-decoration-color: color-mix(in oklch, var(--warm) 55%, transparent);
  text-underline-offset: 3px;
}

.prose a:hover {
  color: var(--warm);
}

.prose .table-note,
.prose .article-nav-link {
  font-size: 14px;
  color: var(--ink-700);
}

.article-nav-link a {
  font-family: "Geist Mono", ui-monospace, monospace;
  font-size: 13px;
}

.article-card-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.article-card {
  margin: 0;
}

.article-card a {
  display: block;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: color-mix(in oklch, var(--sky-100) 88%, white);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.article-card a:hover {
  border-color: color-mix(in oklch, var(--warm) 35%, var(--line));
  box-shadow: 0 10px 24px -16px rgba(14, 24, 48, 0.35);
}

.article-card a h2 {
  font-size: 1.1rem;
  font-weight: 500;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.article-card a p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-700);
  max-width: none;
}

.subpage-footer {
  background: var(--footer-bg);
  color: var(--footer-muted);
  padding: 28px 24px;
  border-top: 1px solid #263251;
  margin-top: auto;
}

.subpage-footer-inner {
  max-width: 720px;
  margin: 0 auto;
}

.subpage-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 28px;
  font-size: 12px;
  font-family: "Geist Mono", ui-monospace, monospace;
  letter-spacing: 0.04em;
}

.subpage-footer-links a {
  color: inherit;
  text-decoration: none;
}

.subpage-footer-links a:hover {
  color: #fff;
}

@media (max-width: 520px) {
  .subpage-header-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}