:root {
  color-scheme: light dark;
  --purple: #4b00b9;
  --purple-strong: #350080;
  --yellow: #ffd34f;
  --black: #070707;
  --bg: #f4f2f8;
  --surface: #ffffff;
  --text: #17121c;
  --body: #514a58;
  --muted: #77707f;
  --line: rgba(34, 22, 45, .14);
  --radius: 18px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #070707;
    --surface: #101012;
    --text: #f6f1fa;
    --body: #cbc4d0;
    --muted: #a39ba8;
    --line: rgba(255,255,255,.11);
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.72 'Poppins', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { max-width: 100%; }
.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(18px);
}
.header-inner, .content-shell, .footer-inner { width: min(1180px, calc(100% - 48px)); margin: auto; }
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; text-decoration: none; }
.brand img { width: 42px; height: 42px; object-fit: contain; }
.brand-copy { display: grid; line-height: 1.08; }
.brand-copy strong { font-size: 14px; }
.brand-copy span { margin-top: 5px; color: var(--muted); font-size: 11px; font-weight: 600; letter-spacing: .04em; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.language-links { display: inline-flex; align-items: center; padding: 3px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
.language-links a { min-width: 40px; min-height: 36px; display: inline-flex; align-items: center; justify-content: center; border-radius: 7px; color: var(--muted); font-size: 12px; font-weight: 700; text-decoration: none; }
.language-links a:hover { color: var(--text); }
.language-links a.active { background: var(--purple); color: #fff; }
.back { min-height: 44px; display: inline-flex; align-items: center; padding: 0 16px; border: 1px solid var(--line); border-radius: 10px; color: var(--text); font-size: 13px; font-weight: 600; text-decoration: none; }
.back:hover { border-color: var(--purple); color: var(--purple); }
.content-shell { padding: 48px 0 80px; }
.hero { position: relative; overflow: hidden; min-height: 390px; display: flex; flex-direction: column; justify-content: flex-end; padding: clamp(34px, 6vw, 68px); border-radius: 24px; background: var(--purple); color: #fff; }
.hero::after { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 76% 20%, rgba(255,255,255,.12), transparent 30%); pointer-events: none; }
.hero-mark { position: absolute; z-index: 0; top: 50%; right: clamp(-60px, 3vw, 30px); width: clamp(260px, 34vw, 430px); height: clamp(260px, 34vw, 430px); object-fit: contain; opacity: .16; transform: translateY(-50%) rotate(-7deg); }
.eyebrow, .hero h1, .lead { position: relative; z-index: 1; }
.eyebrow { color: var(--yellow); font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
h1 { max-width: 15ch; margin: 14px 0 0; font-size: clamp(38px, 5vw, 64px); line-height: 1.03; letter-spacing: -.045em; font-weight: 600; }
.lead { max-width: 70ch; margin: 22px 0 0; color: rgba(255,255,255,.80); font-size: 16px; line-height: 1.68; }
.article-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 58px; margin-top: 46px; }
.article-index { align-self: start; position: sticky; top: 110px; padding-top: 8px; color: var(--muted); font-size: 12px; font-weight: 600; line-height: 1.7; letter-spacing: .07em; text-transform: uppercase; }
.article-index::before { content: ''; display: block; width: 40px; height: 3px; margin-bottom: 16px; background: var(--yellow); }
.card { margin: 0; padding: clamp(28px, 4vw, 52px); border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: 0 18px 52px rgba(35,15,55,.06); }
h2 { margin: 40px 0 10px; color: var(--text); font-size: 24px; line-height: 1.25; letter-spacing: -.025em; }
h2:first-child { margin-top: 0; }
h3 { margin: 28px 0 8px; color: var(--text); font-size: 17px; }
p, li { color: var(--body); }
strong { color: var(--text); }
ul { padding-left: 22px; }
li + li { margin-top: 7px; }
code { padding: 2px 6px; border: 1px solid var(--line); border-radius: 5px; background: var(--bg); color: var(--text); font-size: .9em; }
.card a { color: var(--purple); font-weight: 600; }
@media (prefers-color-scheme: dark) { .card a { color: var(--yellow); } }
table { width: 100%; border-collapse: collapse; margin: 16px 0 24px; }
th, td { padding: 14px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--text); font-size: 12px; letter-spacing: .07em; text-transform: uppercase; }
td { color: var(--body); font-size: 14px; }
.notice { margin-top: 26px; padding: 17px 20px; border-left: 3px solid var(--yellow); background: color-mix(in srgb, var(--yellow) 9%, var(--surface)); }
.site-footer { border-top: 1px solid var(--line); background: var(--surface); }
.footer-inner { min-height: 94px; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--muted); font-size: 12px; }
.footer-inner a { min-height: 40px; display: inline-flex; align-items: center; text-decoration: none; }
.footer-inner a:hover { color: var(--text); }
@media (max-width: 820px) {
  .header-inner, .content-shell, .footer-inner { width: min(100% - 28px, 1180px); }
  .header-inner { min-height: 70px; }
  .brand-copy span { display: none; }
  .back { padding-inline: 12px; }
  .content-shell { padding-top: 24px; }
  .hero { min-height: 360px; border-radius: 18px; }
  .hero-mark { right: -100px; opacity: .12; }
  .article-layout { grid-template-columns: 1fr; gap: 20px; margin-top: 26px; }
  .article-index { position: static; }
  .card { padding: 26px 22px; }
  table { display: block; overflow-x: auto; }
  .footer-inner { flex-direction: column; align-items: flex-start; justify-content: center; padding-block: 22px; }
}
@media (max-width: 540px) {
  .header-actions { gap: 8px; }
  .language-links a { min-width: 35px; }
  .back { max-width: 128px; text-align: center; line-height: 1.25; }
  .hero { min-height: 390px; padding: 28px 24px; }
  .hero-mark { width: 300px; height: 300px; top: 28%; right: -110px; }
  h1 { font-size: clamp(36px, 11vw, 49px); }
  .lead { font-size: 15px; }
  h2 { font-size: 22px; }
}