:root {
  --ink: #10203a;
  --ink-soft: #3d4d66;
  --line: #dbe4f0;
  --paper: #f6f8fc;
  --white: #ffffff;
  --blue: #1a6dff;
  --blue-deep: #0e4ed6;
  --cyan: #2ec7ff;
  --ok: #12875a;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

.wrap {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}
.brand img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}
.brand strong { display: block; font-size: 16px; }
.brand span { display: block; color: var(--ink-soft); font-size: 12px; margin-top: -2px; }
.nav-links { display: flex; gap: 22px; flex-wrap: wrap; }
.nav-links a { color: var(--ink); font-size: 14px; }

.hero {
  background:
    radial-gradient(900px 420px at 85% -10%, rgba(46,199,255,.28), transparent 60%),
    linear-gradient(180deg, #edf4ff 0%, #ffffff 72%);
  padding: 72px 0 56px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 48px;
  align-items: center;
}
.kicker {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: #e8f1ff;
  color: var(--blue-deep);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
}
.hero h1 {
  margin: 14px 0 12px;
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.2;
}
.hero p.lead { font-size: 18px; color: var(--ink-soft); margin: 0 0 28px; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-deep); text-decoration: none; }
.btn-ghost { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.btn-ghost:hover { text-decoration: none; border-color: var(--blue); }

.phone {
  width: min(280px, 100%);
  margin: 0 auto;
  padding: 10px;
  background: #111827;
  border-radius: 32px;
  box-shadow: 0 24px 60px rgba(16,32,58,.22);
}
.phone img { border-radius: 24px; }

section { padding: 72px 0; }
section.alt { background: var(--paper); }
h2 { font-size: 28px; margin: 0 0 10px; }
.sub { color: var(--ink-soft); margin: 0 0 32px; max-width: 720px; }

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
}
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--ink-soft); }

.shots {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.shot {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px 12px 16px;
}
.shot img { border-radius: 12px; }
.shot figcaption {
  margin-top: 10px;
  text-align: center;
  font-size: 13px;
  color: var(--ink-soft);
}

.flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
.step {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
}
.step b {
  display: inline-flex;
  width: 28px;
  height: 28px;
  margin-bottom: 8px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  background: #e8f1ff;
  color: var(--blue-deep);
  font-size: 13px;
}
.step h3 { margin: 0 0 6px; font-size: 16px; }
.step p { margin: 0; color: var(--ink-soft); font-size: 14px; }

.meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.meta dt { color: var(--ink-soft); font-size: 13px; }
.meta dd { margin: 0 0 14px; font-weight: 600; }

.legal { padding: 40px 0 80px; }
.legal-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 32px;
}
.legal-card h1 { margin-top: 0; }
.legal-card .meta { color: var(--ink-soft); margin-bottom: 24px; }
.legal-card h2 { font-size: 18px; margin: 28px 0 8px; }
.legal-card p { color: var(--ink-soft); }

footer {
  border-top: 1px solid var(--line);
  background: #0d1b33;
  color: #d7e2f3;
  padding: 40px 0 28px;
}
footer a { color: #9ec1ff; }
.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}
.foot-brand { display: flex; gap: 12px; align-items: flex-start; }
.foot-brand img { width: 40px; height: 40px; border-radius: 10px; }
footer h3 { margin: 0 0 10px; font-size: 14px; color: #fff; }
footer p, footer li { margin: 0 0 8px; font-size: 14px; color: #c5d2e6; }
footer ul { list-style: none; padding: 0; margin: 0; }
.copy { font-size: 13px; color: #9aabc4; border-top: 1px solid #243552; padding-top: 16px; }

@media (max-width: 900px) {
  .hero-grid, .cards, .shots, .flow, .meta-grid, .foot-grid { grid-template-columns: 1fr; }
  .nav-inner { flex-wrap: wrap; padding: 10px 0; }
  .nav-links { width: 100%; gap: 14px; }
  .hero { padding-top: 28px; }
}