:root {
  --pink: #FF4D6D; --amber: #FFB347; --green: #22C55E;
  --bg: #ffffff; --bg2: #FAFAFC; --card: #ffffff; --text: #15161A; --sub: #5b5f6b;
  --line: rgba(0,0,0,.08); --chip: rgba(255,77,109,.08);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0F1115; --bg2: #13161D; --card: #1C1F2A; --text: #ffffff; --sub: rgba(255,255,255,.66);
    --line: rgba(255,255,255,.08); --chip: rgba(255,77,109,.16); color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6; -webkit-font-smoothing: antialiased;
}
a { color: var(--pink); }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }

/* Header */
header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 6px; text-decoration: none; color: var(--text); font-weight: 800; font-size: 20px; }
.brand img { width: 44px; height: 44px; margin: -6px; }
.links { display: flex; gap: 18px; flex-wrap: wrap; justify-content: flex-end; }
.links a { color: var(--sub); text-decoration: none; font-size: 14px; font-weight: 600; }
.links a:hover { color: var(--text); }
@media (max-width: 560px) { .links a.hide-sm { display: none; } }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px; height: 50px; padding: 0 22px; border-radius: 14px;
  font-weight: 700; text-decoration: none; color: #fff;
  background: linear-gradient(90deg, var(--pink), #ff6b8a); box-shadow: 0 10px 22px rgba(255,77,109,.28);
}
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); box-shadow: none; }

/* Hero */
.hero { position: relative; overflow: hidden; padding: 72px 0 56px; text-align: center; }
.hero::before {
  content: ""; position: absolute; inset: -30% -10% auto -10%; height: 90%; z-index: -1;
  background: radial-gradient(closest-side, rgba(255,77,109,.20), transparent),
              radial-gradient(closest-side at 72% 40%, rgba(255,179,71,.18), transparent);
  filter: blur(8px);
}
.hero img.mark { width: 128px; height: 128px; margin-bottom: -10px; }
.hero h1 { font-size: clamp(34px, 6vw, 58px); line-height: 1.05; letter-spacing: -1.5px; margin: 8px 0 14px; }
.grad { background: linear-gradient(90deg, var(--pink), var(--amber)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { font-size: clamp(16px, 2.2vw, 20px); color: var(--sub); max-width: 620px; margin: 0 auto 26px; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.note { font-size: 13px; color: var(--sub); margin-top: 14px; }

/* Sections */
section { padding: 56px 0; }
section.alt { background: var(--bg2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
h2 { font-size: clamp(26px, 4vw, 36px); letter-spacing: -.6px; margin: 0 0 10px; text-align: center; }
.sub { text-align: center; color: var(--sub); max-width: 640px; margin: 0 auto 30px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 22px;
}
.card .ic {
  width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; font-size: 22px;
  background: var(--chip); margin-bottom: 12px;
}
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--sub); font-size: 15px; }
.pill { display: inline-block; padding: 4px 10px; border-radius: 999px; background: var(--chip); color: var(--pink); font-weight: 700; font-size: 12px; margin-bottom: 10px; }

/* Docs (privacy / terms) */
.doc { max-width: 760px; margin: 0 auto; padding: 40px 20px 64px; }
.doc h1 { font-size: clamp(30px, 5vw, 42px); letter-spacing: -1px; margin: 0 0 6px; }
.doc .updated { color: var(--sub); font-size: 14px; margin-bottom: 28px; }
.doc h2 { text-align: left; font-size: 20px; margin: 28px 0 6px; letter-spacing: -.2px; }
.doc p, .doc li { color: var(--sub); font-size: 16px; }
.doc .box { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 18px 20px; margin: 18px 0; }
.doc ol li, .doc ul li { margin: 6px 0; }
.toc { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 8px; }
.toc a { font-size: 13px; text-decoration: none; padding: 6px 10px; border-radius: 999px; background: var(--chip); }

/* Footer */
footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--sub); font-size: 14px; }
.foot { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.foot a { color: var(--sub); text-decoration: none; margin-right: 16px; }
.foot a:hover { color: var(--text); }