:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --panel: #ffffff;
  --text: #10203d;
  --muted: #5f6f8d;
  --line: #dbe3f1;
  --brand: #4f5ed4;
  --brand-soft: #eef1ff;
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}
* { box-sizing: border-box; }
body { margin: 0; font-family: "Segoe UI", Arial, sans-serif; background: linear-gradient(180deg, #fbfcff 0%, var(--bg) 100%); color: var(--text); line-height: 1.65; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
.shell { width: min(1100px, calc(100% - 32px)); margin: 0 auto; }
.topbar { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,0.92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.topbar-inner { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--text); font-weight: 700; letter-spacing: -0.02em; }
.brand-mark { width: 38px; height: 38px; border-radius: 999px; display: inline-flex; align-items: center; justify-content: center; background: var(--brand); color: #fff; font-size: 18px; box-shadow: 0 10px 20px rgba(79,94,212,0.2); }
.nav-links { display: flex; flex-wrap: wrap; gap: 18px; font-size: 14px; }
.hero { padding: 56px 0 28px; }
.eyebrow { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.22em; color: var(--brand); }
.hero h1, .article h1 { margin: 16px 0 12px; font-size: clamp(2.1rem, 4.8vw, 4rem); line-height: 1.05; letter-spacing: -0.045em; }
.hero p, .article-intro { max-width: 760px; margin: 0; font-size: 18px; color: var(--muted); }
.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin: 28px 0 46px; }
.card { display: block; background: var(--panel); border: 1px solid var(--line); border-radius: 24px; padding: 24px; box-shadow: var(--shadow); transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease; }
.card:hover { transform: translateY(-3px); border-color: #bac8e4; box-shadow: 0 24px 50px rgba(15,23,42,0.11); text-decoration: none; }
.card-kicker { display: inline-flex; padding: 6px 10px; border-radius: 999px; background: var(--brand-soft); color: var(--brand); font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.14em; }
.card h2, .card h3 { margin: 16px 0 10px; font-size: 28px; line-height: 1.08; letter-spacing: -0.04em; color: var(--text); }
.card p { margin: 0; color: var(--muted); }
.card-cta { display: inline-flex; align-items: center; gap: 8px; margin-top: 18px; font-weight: 700; }
.section { background: var(--panel); border: 1px solid var(--line); border-radius: 28px; padding: 28px; box-shadow: var(--shadow); margin: 0 0 28px; }
.section h2 { margin: 0 0 10px; font-size: clamp(1.8rem, 3vw, 2.5rem); line-height: 1.08; letter-spacing: -0.04em; }
.section p { margin: 0; color: var(--muted); }
.article-list { display: grid; gap: 14px; margin-top: 22px; }
.article-item { padding: 22px; border-radius: 22px; border: 1px solid var(--line); background: #fbfcff; }
.article-item h3 { margin: 0 0 8px; font-size: 22px; letter-spacing: -0.03em; }
.article-item p { margin: 0; }
.meta { display: flex; flex-wrap: wrap; gap: 12px; margin: 22px 0 28px; color: var(--muted); font-size: 14px; }
.article { padding: 46px 0 24px; }
.article-wrap { background: var(--panel); border: 1px solid var(--line); border-radius: 30px; padding: 32px; box-shadow: var(--shadow); }
.article-wrap p { margin: 0 0 18px; }
.faq { margin-top: 38px; padding-top: 28px; border-top: 1px solid var(--line); }
.faq-item + .faq-item { margin-top: 20px; }
.faq-item h3 { margin: 0 0 8px; font-size: 18px; }
.footer { padding: 24px 0 48px; color: var(--muted); font-size: 14px; }
@media (max-width: 860px) {
  .card-grid { grid-template-columns: 1fr; }
  .topbar-inner { align-items: flex-start; padding: 14px 0; flex-direction: column; }
  .nav-links { gap: 12px; }
}