:root {
  --ink: #142033; --muted: #5d6b80; --line: #e3e8ef; --accent: #246bfd; --accent-dark: #1b55d1;
  --bg: #f6f8fb; --card: #fff; --dark: #0f1828;
  font-family: "Microsoft YaHei UI", "PingFang SC", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: var(--bg); line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
.topbar { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  max-width: 1120px; margin: 0 auto; padding: 16px 24px; background: #f6f8fbe6; backdrop-filter: blur(10px); }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 700; letter-spacing: .2px; }
.mark { width: 28px; height: 28px; border-radius: 8px; background: linear-gradient(135deg, #4083ff, var(--accent)) center/100% no-repeat;
  position: relative; }
.mark::before, .mark::after { content: ""; position: absolute; top: 7px; bottom: 7px; width: 3px; border-radius: 2px; background: #fff; }
.mark::before { left: 8px; box-shadow: 9px 0 0 #fff; }
.mark::after { left: 8px; right: 8px; top: 12.5px; bottom: auto; width: auto; height: 3px; }
.topbar nav { display: flex; gap: 22px; color: var(--muted); font-size: 14px; }
.topbar nav a:hover { color: var(--ink); }
main { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.hero { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); align-items: center; gap: 48px; padding: 72px 0 64px; }
.eyebrow { margin: 0 0 14px; color: var(--accent); font-size: 14px; font-weight: 600; }
h1 { margin: 0 0 18px; font-size: clamp(32px, 4.4vw, 48px); line-height: 1.2; letter-spacing: -.5px; }
.lead { margin: 0 0 28px; max-width: 34em; color: var(--muted); font-size: 17px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; align-items: center; height: 44px; padding: 0 22px; border: 1px solid var(--line); border-radius: 10px;
  background: #fff; font-weight: 600; font-size: 15px; transition: background .15s, border-color .15s; }
.button:hover { border-color: #c9d3e0; }
.button.primary { border-color: var(--accent); color: #fff; background: var(--accent); }
.button.primary:hover { background: var(--accent-dark); }
.hero-panel { padding: 18px; border: 1px solid #ffffff14; border-radius: 16px; color: #d9e3f1; background: var(--dark);
  box-shadow: 0 24px 60px -24px #0f182866; }
.panel-head { display: flex; gap: 6px; margin-bottom: 14px; }
.panel-head span { width: 10px; height: 10px; border-radius: 50%; background: #2d3b52; }
.panel-row { display: grid; grid-template-columns: 64px auto 1fr; align-items: center; gap: 12px; padding: 11px 12px; border-radius: 10px;
  font-size: 13px; background: #ffffff08; margin-bottom: 8px; }
.panel-row b { color: #fff; }
.panel-row i { font-style: normal; font-size: 12px; padding: 2px 8px; border-radius: 10px; }
.panel-row i.ok { color: #6fe0b0; background: #34c98b1f; }
.panel-row i.queue { color: #f2c27e; background: #f2b7661f; }
.panel-row em { color: #8396b0; font-style: normal; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.panel-tree { display: flex; align-items: center; gap: 8px; margin-top: 14px; font-size: 12px; }
.panel-tree span { padding: 6px 10px; border: 1px solid #ffffff1c; border-radius: 8px; color: #c9d5e5; }
.panel-tree span + span::before { content: "→"; margin: 0 8px 0 -4px; color: #5d7190; }
.panel-tree .leaf { border-color: #246bfd88; color: #9fc0ff; }
.section { padding: 56px 0; border-top: 1px solid var(--line); }
.section h2 { margin: 0 0 28px; font-size: 28px; }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.grid article { padding: 22px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
.grid h3 { margin: 0 0 8px; font-size: 17px; }
.grid p { margin: 0; color: var(--muted); font-size: 14.5px; }
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; margin: 0; padding: 0; list-style: none; counter-reset: step; }
.steps li { position: relative; padding: 22px 20px 20px; border-radius: 14px; background: var(--card); border: 1px solid var(--line); counter-increment: step; }
.steps li::before { content: counter(step); display: grid; place-items: center; width: 28px; height: 28px; margin-bottom: 12px; border-radius: 50%;
  color: #fff; font-size: 14px; font-weight: 700; background: var(--accent); }
.steps b { display: block; margin-bottom: 6px; font-size: 16px; }
.steps span { color: var(--muted); font-size: 14px; }
.license > div { max-width: 720px; }
.license p { color: var(--muted); font-size: 16px; }
.license .contact { padding: 16px 18px; border-left: 3px solid var(--accent); border-radius: 0 10px 10px 0; color: var(--ink); background: #fff; }
.footer { display: flex; justify-content: space-between; gap: 16px; max-width: 1120px; margin: 0 auto; padding: 28px 24px 40px;
  color: var(--muted); font-size: 13px; border-top: 1px solid var(--line); }
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding: 40px 0; gap: 32px; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  .topbar nav { display: none; }
  .grid, .steps { grid-template-columns: 1fr; }
  .panel-row { grid-template-columns: 56px auto; }
  .panel-row em { display: none; }
}