:root {
  --bg: #f6f5fc;
  --bg-2: #ffffff;
  --text: #17162a;
  --muted: #5d5b78;
  --line: #e4e2f2;
  --accent: #4f46e5;
  --accent-text: #ffffff;
  --accent-soft: #ecebfd;
  --shadow: 0 1px 2px rgb(23 22 42 / 0.05), 0 12px 40px rgb(79 70 229 / 0.10);
  --radius: 18px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111020;
    --bg-2: #1a1930;
    --text: #efeefa;
    --muted: #a6a4c4;
    --line: #2c2a48;
    --accent: #8b85ff;
    --accent-text: #120f2e;
    --accent-soft: #24224a;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.3), 0 12px 40px rgb(0 0 0 / 0.35);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60rem 30rem at 10% -10%, rgb(129 120 255 / 0.18), transparent 60%),
    radial-gradient(50rem 30rem at 100% 0%, rgb(255 160 200 / 0.14), transparent 60%),
    radial-gradient(50rem 30rem at 80% 100%, rgb(120 210 255 / 0.12), transparent 60%);
}
a { color: var(--accent); }
img { max-width: 100%; display: block; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 600px) { .wrap { padding: 0 16px; } }

/* Header */
.top { display: flex; align-items: center; justify-content: space-between; padding-block: 20px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; font-size: 19px; letter-spacing: -0.01em; }
.brand img { width: 36px; height: 36px; border-radius: 9px; }
.top nav { display: flex; gap: 22px; font-size: 15px; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a:hover { color: var(--text); }
@media (max-width: 600px) { .top nav .hide-sm { display: none; } }

/* Hero */
.hero { text-align: center; padding-block: 56px 40px; }
.hero .icon { width: 112px; height: 112px; margin: 0 auto 24px; border-radius: 26px; box-shadow: var(--shadow); }
.hero h1 { font-size: clamp(38px, 7vw, 64px); line-height: 1.05; letter-spacing: -0.03em; margin: 0 0 18px; }
.hero p.lead { font-size: clamp(18px, 2.4vw, 21px); color: var(--muted); max-width: 640px; margin: 0 auto 30px; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 999px; font-weight: 600; font-size: 16px; text-decoration: none; border: 1px solid var(--line); background: var(--bg-2); color: var(--text); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn[aria-disabled="true"] { cursor: default; }
.btn svg { width: 18px; height: 18px; }
.note { font-size: 14px; color: var(--muted); margin-top: 14px; }


/* Sections */
section { padding: 72px 0 0; }
section h2 { font-size: clamp(28px, 4vw, 38px); letter-spacing: -0.02em; line-height: 1.15; margin: 0 0 12px; }
section > .wrap > p.sub { color: var(--muted); max-width: 680px; margin: 0 0 32px; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 900px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid { grid-template-columns: 1fr; } }
.card { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card h3 { margin: 12px 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .ic { width: 38px; height: 38px; border-radius: 10px; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; }
.card .ic svg { width: 20px; height: 20px; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 24px; } }
.split ul { padding-left: 20px; color: var(--muted); }
.split li { margin: 6px 0; }
.split p.sub { color: var(--muted); margin: 0; }

.source { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; display: flex; gap: 24px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.source p { margin: 0; color: var(--muted); max-width: 640px; }
.source h2 { margin-bottom: 8px; }

/* Footer */
footer { padding: 72px 0 40px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; border-top: 1px solid var(--line); padding-top: 24px; margin-top: 0; }
footer nav { display: flex; gap: 18px; flex-wrap: wrap; }
footer a { color: var(--muted); }

/* Legal pages */
.doc { max-width: 760px; padding: 24px 0 0; }
.doc h1 { font-size: 36px; letter-spacing: -0.02em; margin: 16px 0 24px; }
.doc h2 { font-size: 21px; margin: 32px 0 8px; }
.doc p, .doc li { color: var(--text); }
.doc .muted { color: var(--muted); }