:root {
  color-scheme: dark;
  --bg0: #0a0e16;
  --bg1: #0f1420;
  --panel: rgba(24, 31, 48, 0.74);
  --panel-soft: rgba(24, 31, 48, 0.6);
  --line: rgba(120, 150, 255, 0.16);
  --line-soft: rgba(120, 150, 255, 0.12);
  --text: #e8edf7;
  --muted: #8996b3;
  --soft: #b9c4dc;
  --accent: #ff8a3d;
  --accent2: #ff5d2e;
  --ok: #4fd8a4;
  --link: #7f9dff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(1200px 620px at 50% -12%, #1b2440 0%, var(--bg1) 46%, var(--bg0) 100%);
  font: 15px/1.75 "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
code {
  background: rgba(120, 150, 255, 0.12);
  padding: 2px 7px;
  border-radius: 6px;
  color: #9db4ff;
  font-size: 13px;
}

.wrap { width: min(1080px, 94vw); margin: 0 auto; }
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0 8px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  font-size: 20px;
  flex: none;
}
.brand h1 {
  margin: 0;
  font-size: 18px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.brand .sub { color: var(--muted); font-size: 12px; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.nav-links a { color: var(--soft); font-size: 13px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none !important;
  transition: filter .15s ease, transform .15s ease, background .15s ease;
}
.btn:hover { filter: brightness(1.06); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff !important;
}
.btn-ghost {
  background: rgba(127, 157, 255, 0.08);
  border-color: rgba(127, 157, 255, 0.22);
  color: #c9d6ff !important;
}

.hero {
  margin: 28px 0 18px;
  padding: 34px 32px;
  border-radius: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(79, 216, 164, 0.12);
  color: var(--ok);
  border: 1px solid rgba(79, 216, 164, 0.3);
  font-size: 12.5px;
}
.hero h2 {
  margin: 14px 0 10px;
  font-size: clamp(26px, 4vw, 36px);
  line-height: 1.25;
}
.hero p { margin: 0; color: var(--soft); max-width: 720px; }
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}
.meta {
  margin-top: 14px;
  color: var(--muted);
  font-size: 12.5px;
}
.tip {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: 10px;
  background: rgba(255, 138, 61, 0.08);
  border: 1px solid rgba(255, 138, 61, 0.25);
  color: #ffc9a3;
  font-size: 13px;
}

.section { padding: 28px 0 8px; }
.section h3 {
  margin: 0 0 14px;
  font-size: 18px;
  color: #cfd9ee;
}
.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.card {
  padding: 16px 18px;
  border-radius: 14px;
  background: var(--panel-soft);
  border: 1px solid var(--line-soft);
}
.card b { display: block; margin-bottom: 6px; color: var(--text); font-size: 15px; }
.card span, .card p { color: var(--muted); font-size: 13px; margin: 0; }

.steps {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
  counter-reset: step;
}
.steps li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--panel-soft);
  border: 1px solid var(--line-soft);
  color: var(--soft);
}
.steps li::before {
  counter-increment: step;
  content: counter(step);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 138, 61, 0.16);
  color: #ffc9a3;
  display: grid;
  place-items: center;
  font-weight: 700;
  flex: none;
}

.plans {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.plan {
  padding: 18px;
  border-radius: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
}
.plan .name { font-weight: 700; margin-bottom: 4px; }
.plan .price {
  font-size: 28px;
  font-weight: 800;
  color: #ffc9a3;
  margin: 8px 0;
}
.plan .price small { font-size: 13px; color: var(--muted); font-weight: 500; }
.plan ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 13px;
}
.plan li { margin: 4px 0; }
.muted-box {
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(127, 157, 255, 0.06);
  border: 1px dashed rgba(127, 157, 255, 0.25);
  color: var(--muted);
  font-size: 13px;
}
.contact-line { margin-top: 10px; color: var(--soft); }

.foot {
  margin: 42px 0 28px;
  padding-top: 18px;
  border-top: 1px solid rgba(120, 150, 255, 0.1);
  color: #6c7893;
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

@media (max-width: 860px) {
  .grid, .plans { grid-template-columns: 1fr; }
  .hero { padding: 24px 18px; }
  .nav { align-items: flex-start; flex-direction: column; }
}