:root {
  --bg: #f7f6fb;
  --surface: rgba(255, 255, 255, 0.82);
  --ink: #17151d;
  --muted: #686270;
  --line: rgba(32, 24, 46, 0.11);
  --violet: #7557f7;
  --violet-dark: #5439d8;
  --mint: #11a675;
  --shadow: 0 24px 70px rgba(48, 37, 80, 0.14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background:
    radial-gradient(circle at 88% 2%, rgba(117, 87, 247, 0.15), transparent 30rem),
    radial-gradient(circle at 0 42%, rgba(17, 166, 117, 0.08), transparent 25rem),
    var(--bg);
}
a { color: inherit; }
.shell { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.nav {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; }
.mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: white;
  border-radius: 11px;
  background: linear-gradient(145deg, #8c72ff, #5d3ded);
  box-shadow: 0 8px 24px rgba(92, 61, 237, 0.28);
}
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { text-decoration: none; color: var(--muted); font-size: 14px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  text-decoration: none;
  font-weight: 750;
  background: white;
  transition: transform .18s ease, box-shadow .18s ease;
}
.button:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(48, 37, 80, .13); }
.button.primary {
  color: white;
  border-color: transparent;
  background: linear-gradient(135deg, var(--violet), var(--violet-dark));
}
.button.small { min-height: 40px; padding: 0 16px; border-radius: 12px; }
.hero { padding: 72px 0 54px; text-align: center; }
.eyebrow {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 8px 12px;
  border: 1px solid rgba(117, 87, 247, .18);
  border-radius: 999px;
  color: var(--violet-dark);
  background: rgba(255, 255, 255, .64);
  font-size: 13px;
  font-weight: 700;
}
.hero h1 {
  max-width: 800px;
  margin: 24px auto 18px;
  font-size: clamp(42px, 7vw, 76px);
  line-height: 1.05;
  letter-spacing: -.055em;
}
.hero h1 span {
  color: transparent;
  background: linear-gradient(120deg, #17151d 15%, #7557f7 70%);
  background-clip: text;
}
.lead {
  max-width: 650px;
  margin: 0 auto;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.8;
}
.actions { display: flex; justify-content: center; gap: 12px; margin-top: 30px; flex-wrap: wrap; }
.meta { margin-top: 14px; color: #817a89; font-size: 13px; }
.preview {
  position: relative;
  margin: 34px auto 80px;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, .9);
  border-radius: 24px;
  background: rgba(255, 255, 255, .52);
  box-shadow: var(--shadow);
}
.preview img { display: block; width: 100%; border-radius: 15px; }
.preview::after {
  content: "";
  position: absolute;
  inset: auto 15% -30px;
  height: 50px;
  background: rgba(117, 87, 247, .23);
  filter: blur(34px);
  z-index: -1;
}
.section { padding: 78px 0; }
.section-head { max-width: 650px; margin-bottom: 34px; }
.kicker { color: var(--violet-dark); font-size: 13px; font-weight: 800; letter-spacing: .12em; }
h2 { margin: 10px 0 14px; font-size: clamp(30px, 4vw, 48px); letter-spacing: -.035em; }
.section-head p, .card p, .steps p { color: var(--muted); line-height: 1.75; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card {
  min-height: 220px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
}
.icon { font-size: 26px; }
.card h3 { margin: 28px 0 8px; font-size: 20px; }
.steps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  align-items: center;
}
.step-list { display: grid; gap: 12px; }
.step {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, .72);
}
.num {
  width: 42px; height: 42px; display: grid; place-items: center;
  border-radius: 13px; color: white; background: var(--violet); font-weight: 800;
}
.step h3 { margin: 1px 0 5px; }
.step p { margin: 0; font-size: 14px; }
.notice {
  padding: 28px;
  border: 1px solid rgba(17, 166, 117, .22);
  border-radius: 22px;
  background: rgba(231, 251, 244, .72);
}
.notice strong { color: #087854; }
.cta {
  margin: 70px auto;
  padding: 54px 28px;
  text-align: center;
  color: white;
  border-radius: 28px;
  background: #15121d;
  overflow: hidden;
  position: relative;
}
.cta::before {
  content: ""; position: absolute; width: 320px; height: 320px; border-radius: 50%;
  right: -120px; top: -180px; background: rgba(117,87,247,.55); filter: blur(10px);
}
.cta h2 { position: relative; margin-top: 0; }
.cta p { position: relative; color: #c6c0cf; }
.cta .actions { position: relative; }
footer { padding: 28px 0 48px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.footer-row { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 18px; }
.legal { max-width: 780px; padding: 50px 0 100px; }
.legal h1 { font-size: clamp(38px, 6vw, 62px); letter-spacing: -.04em; }
.legal h2 { margin-top: 42px; font-size: 24px; }
.legal p, .legal li { color: var(--muted); line-height: 1.8; }
@media (max-width: 780px) {
  .shell { width: min(100% - 28px, 1160px); }
  .nav-links { display: none; }
  .hero { padding-top: 48px; }
  .hero h1 { overflow-wrap: anywhere; }
  .hero .actions { width: 100%; flex-direction: column; align-items: center; }
  .hero .actions .button { width: min(100%, 300px); }
  .grid, .steps { grid-template-columns: 1fr; }
  .preview { padding: 7px; border-radius: 16px; }
  .preview img { border-radius: 11px; }
  .section { padding: 54px 0; }
}