:root {
  --bg: #08080a;
  --bg-2: #0f0f12;
  --bg-3: #16161a;
  --text: #ffffff;
  --muted: rgba(255, 255, 255, 0.6);
  --faint: rgba(255, 255, 255, 0.38);
  --line: rgba(255, 255, 255, 0.10);
  --radius: 22px;
  --maxw: 980px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter",
    system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* Ambient glow background */
.glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(600px 600px at 20% -5%, rgba(255,255,255,0.06), transparent 60%),
    radial-gradient(700px 700px at 90% 10%, rgba(255,255,255,0.04), transparent 60%),
    linear-gradient(180deg, var(--bg-2), var(--bg));
}

/* Nav */
nav {
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: rgba(8,8,10,0.55);
  border-bottom: 1px solid var(--line);
}
nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; letter-spacing: -0.02em; }
.brand svg { width: 26px; height: 26px; }
.nav-links { display: flex; gap: 26px; font-size: 15px; color: var(--muted); }
.nav-links a:hover { color: var(--text); }

/* Hero */
.hero { text-align: center; padding: 96px 0 72px; }
.hero .mark { width: 104px; height: 104px; margin: 0 auto 28px; }
.hero h1 { font-size: clamp(44px, 9vw, 84px); font-weight: 700; letter-spacing: -0.04em; line-height: 1; }
.hero p.tag { margin-top: 20px; font-size: clamp(17px, 2.6vw, 21px); color: var(--muted); }
.hero p.sub { margin-top: 10px; font-size: 15px; color: var(--faint); }

.cta { margin-top: 36px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 54px; padding: 0 26px; border-radius: 999px;
  font-size: 16px; font-weight: 600;
  background: var(--text); color: #000;
  border: 1px solid rgba(255,255,255,0.6);
  transition: transform 0.15s ease, opacity 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }

/* Sections */
section.block { padding: 64px 0; }
h2.section-title { font-size: clamp(28px, 5vw, 40px); font-weight: 700; letter-spacing: -0.03em; text-align: center; }
.section-lead { text-align: center; color: var(--muted); margin: 14px auto 0; max-width: 560px; font-size: 17px; }

.grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
@media (max-width: 760px) { .grid { grid-template-columns: 1fr; } .nav-links { gap: 18px; } }

.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.015));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
}
.card .ic { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
  border-radius: 12px; background: rgba(255,255,255,0.06); border: 1px solid var(--line); margin-bottom: 16px; }
.card .ic svg { width: 20px; height: 20px; stroke: var(--text); fill: none; stroke-width: 1.8; }
.card h3 { font-size: 18px; font-weight: 650; letter-spacing: -0.01em; }
.card p { margin-top: 8px; color: var(--muted); font-size: 15px; }

/* Privacy strip */
.strip { text-align: center; padding: 80px 24px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-top: 24px; }
.strip h2 { font-size: clamp(26px, 5vw, 38px); font-weight: 700; letter-spacing: -0.03em; max-width: 720px; margin: 0 auto; }
.strip p { color: var(--muted); margin-top: 16px; font-size: 17px; }

/* Footer */
footer { padding: 56px 0 64px; border-top: 1px solid var(--line); margin-top: 24px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; align-items: center; }
footer .links { display: flex; gap: 24px; font-size: 15px; color: var(--muted); }
footer .links a:hover { color: var(--text); }
footer .copy { color: var(--faint); font-size: 14px; }

/* Legal / content pages */
.doc { max-width: 760px; margin: 0 auto; padding: 56px 24px 80px; }
.doc .back { color: var(--muted); font-size: 15px; display: inline-block; margin-bottom: 32px; }
.doc .back:hover { color: var(--text); }
.doc h1 { font-size: clamp(32px, 6vw, 46px); font-weight: 700; letter-spacing: -0.03em; }
.doc .updated { color: var(--faint); font-size: 14px; margin-top: 8px; margin-bottom: 36px; }
.doc h2 { font-size: 21px; font-weight: 650; margin: 36px 0 12px; letter-spacing: -0.01em; }
.doc p, .doc li { color: var(--muted); font-size: 16px; margin-bottom: 12px; }
.doc ul { padding-left: 22px; }
.doc a.link { color: var(--text); text-decoration: underline; text-underline-offset: 3px; }
.doc .faq { border-top: 1px solid var(--line); padding: 22px 0; }
.doc .faq:last-child { border-bottom: 1px solid var(--line); }
.doc .faq h3 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }