* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Segoe UI Variable Display", "Segoe UI", "Microsoft YaHei UI", "PingFang SC", system-ui, sans-serif;
  color: #101828; background: #f3f5fa; line-height: 1.7; -webkit-font-smoothing: antialiased;
  font-size: 15px;
}
a { color: #3157d6; text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2 { letter-spacing: -.6px; color: #0b1220; }
h2 { font-size: 21px; margin: 0 0 14px; }
.wrap { width: min(1080px, 100% - 40px); margin: 0 auto; }
.muted { color: #98a2b3; }
code {
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: 12px;
  background: rgba(16, 24, 40, .05); padding: 2px 6px; border-radius: 6px; word-break: break-all;
}
.aurora {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(60% 40% at 8% 0%, rgba(49, 87, 214, .16), transparent 70%),
    radial-gradient(50% 38% at 98% 10%, rgba(47, 125, 122, .14), transparent 70%),
    radial-gradient(46% 34% at 84% 86%, rgba(176, 128, 72, .12), transparent 72%),
    linear-gradient(180deg, #f7f9fd, #eef1f8);
}
.glass {
  background: linear-gradient(155deg, rgba(255, 255, 255, .86), rgba(255, 255, 255, .6));
  border: 1px solid rgba(255, 255, 255, .8);
  border-radius: 20px;
  box-shadow: 0 22px 44px -34px rgba(18, 32, 60, .5), inset 0 1px 0 rgba(255, 255, 255, .98);
  -webkit-backdrop-filter: blur(18px) saturate(170%); backdrop-filter: blur(18px) saturate(170%);
}
.topbar {
  position: sticky; top: 0; z-index: 10;
  background: rgba(247, 249, 253, .82);
  -webkit-backdrop-filter: blur(20px) saturate(180%); backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(16, 24, 40, .06);
}
.bar-in { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 9px; font-weight: 700; font-size: 17px; color: #0b1220; letter-spacing: -.3px; }
.logo { width: 26px; height: 26px; color: #3157d6; display: inline-flex; }
.logo svg { width: 100%; height: 100%; }
.nav { display: flex; gap: 20px; font-size: 13.5px; }
.nav a { color: #475467; }
.nav a:hover { color: #3157d6; text-decoration: none; }

.hero { display: grid; grid-template-columns: 1.15fr .85fr; gap: 34px; align-items: center; padding: 54px 0 40px; }
.eyebrow { margin: 0 0 12px; font-size: 12px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: #667085; }
.hero h1 { margin: 0; font-size: 38px; line-height: 1.25; font-weight: 700; letter-spacing: -1.4px; }
.lede { margin: 16px 0 22px; font-size: 15px; color: #4b5565; max-width: 560px; }
.lede b { color: #1d2939; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; }
.cta-sub { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-top: 12px; font-size: 12.5px; color: #667085; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px;
  padding: 0 20px; border-radius: 13px; font-size: 14.5px; font-weight: 600; color: #344054;
  background: rgba(255, 255, 255, .72); border: 1px solid rgba(255, 255, 255, .9);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .95), 0 12px 24px -18px rgba(18, 32, 60, .55);
  text-decoration: none;
}
.btn:hover { background: #fff; text-decoration: none; }
.btn.primary {
  background: linear-gradient(180deg, #4b72e8, #3157d6); color: #fff; border-color: rgba(255, 255, 255, .22);
  box-shadow: 0 14px 26px -14px rgba(49, 87, 214, .8), inset 0 1px 0 rgba(255, 255, 255, .3);
}
.btn.primary:hover { background: #2748b8; }
.btn.block { width: 100%; margin-top: 12px; }
.btn-sub { font-size: 12px; font-weight: 500; opacity: .8; }
.hero-card { padding: 16px 16px 12px; }
.hc-hd { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.hc-hd b { font-size: 15px; color: #0b1220; }
.chip { display: inline-flex; align-items: center; gap: 5px; font-size: 11px; color: #3157d6; background: rgba(49, 87, 214, .08); border-radius: 999px; padding: 3px 9px; }
.chip i { width: 5px; height: 5px; border-radius: 50%; background: #12b76a; }
.hc-wx { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: 14px; background: rgba(255, 255, 255, .55); border: 1px solid rgba(255, 255, 255, .75); }
.wx-temp { font-size: 30px; font-weight: 700; letter-spacing: -1.4px; color: #0b1220; }
.wx-temp i { font-style: normal; font-size: 13px; color: #667085; margin-left: 3px; }
.wx-sub { font-size: 11.5px; color: #667085; }
.hc-now { display: flex; align-items: center; gap: 12px; margin-top: 12px; padding: 12px; border-radius: 14px; background: linear-gradient(100deg, rgba(49, 87, 214, .12), rgba(255, 255, 255, .5)); border: 1px solid rgba(49, 87, 214, .22); }
.hc-ring { position: relative; width: 58px; height: 58px; border-radius: 50%; background: conic-gradient(#12b76a 0 75%, rgba(16, 24, 40, .08) 75% 100%); display: flex; align-items: center; justify-content: center; }
.hc-ring::before { content: ""; position: absolute; inset: 4px; border-radius: 50%; background: rgba(255, 255, 255, .92); }
.hc-ring span { position: relative; font-size: 11px; font-weight: 700; color: #0b1220; font-variant-numeric: tabular-nums; }
.hc-ring em { position: absolute; bottom: 16px; font-style: normal; font-size: 8px; color: #98a2b3; }
.hc-info b { display: block; font-size: 14px; color: #0b1220; }
.hc-info p { margin: 3px 0 0; font-size: 11.5px; color: #667085; }
.hc-row { display: flex; align-items: center; gap: 10px; margin-top: 8px; padding: 9px 12px; border-radius: 12px; background: rgba(255, 255, 255, .6); border: 1px solid rgba(255, 255, 255, .8); font-size: 12.5px; }
.hc-row .t { color: #3157d6; font-weight: 700; font-variant-numeric: tabular-nums; }
.hc-row .n { flex: 1; color: #1d2939; }
.hc-row .r { color: #98a2b3; font-size: 11.5px; }
.hc-dock { display: flex; gap: 6px; justify-content: center; margin-top: 14px; }
.hc-dock i { width: 30px; height: 5px; border-radius: 3px; background: rgba(16, 24, 40, .08); }
.hc-dock i.on { background: #3157d6; }

section { margin-bottom: 30px; }
section:not(.hero) { scroll-margin-top: 74px; }
.card { padding: 24px; }
.dl-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.dl-item { padding: 16px 18px; border-radius: 16px; background: rgba(255, 255, 255, .55); border: 1px solid rgba(255, 255, 255, .8); }
.dl-hd { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.dl-hd b { font-size: 16px; color: #0b1220; }
.tag { font-size: 11.5px; font-weight: 600; color: #3157d6; background: rgba(49, 87, 214, .1); border-radius: 999px; padding: 2px 10px; font-variant-numeric: tabular-nums; }
.dl-meta { margin: 8px 0 0; font-size: 13px; color: #667085; }
.dl-item .btn { color: #1d2939; border-color: rgba(16, 24, 40, .14); }
.dl-item .btn:hover { border-color: rgba(49, 87, 214, .35); }
.sha { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin: 12px 0 0; font-size: 11.5px; color: #667085; }
.copy { font: inherit; font-size: 11.5px; padding: 3px 9px; border-radius: 7px; border: 1px solid rgba(16, 24, 40, .1); background: #fff; color: #475467; cursor: pointer; }
.copy:hover { background: #f2f5fa; }
.note { margin: 16px 0 0; font-size: 12.5px; color: #667085; }
.feat-grid, .steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.steps-grid { grid-template-columns: 1fr 1fr; }
.feat { padding: 16px 18px; }
.feat b { display: block; font-size: 14.5px; color: #0b1220; margin-bottom: 5px; }
.feat p { margin: 0; font-size: 13px; color: #667085; }
.step { padding: 18px 20px; }
.step b { display: flex; align-items: center; gap: 9px; font-size: 15px; color: #0b1220; margin-bottom: 10px; }
.step .n { display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: 8px; background: rgba(49, 87, 214, .1); color: #3157d6; font-size: 12px; }
.step ol { margin: 0; padding-left: 22px; font-size: 13.5px; color: #4b5565; }
.step li { margin-bottom: 7px; }
.clean { margin: 0; padding: 0; list-style: none; }
.clean li { position: relative; padding-left: 18px; margin-bottom: 9px; font-size: 14px; color: #4b5565; }
.clean li::before { content: ""; position: absolute; left: 2px; top: 9px; width: 6px; height: 6px; border-radius: 50%; background: #3157d6; opacity: .55; }
details.glass { padding: 14px 18px; margin-bottom: 10px; }
details.glass summary { cursor: pointer; font-weight: 600; color: #1d2939; font-size: 14.5px; list-style: none; }
details.glass summary::-webkit-details-marker { display: none; }
details.glass summary::before { content: "+"; display: inline-block; width: 18px; color: #3157d6; }
details[open].glass summary::before { content: "-"; }
details.glass p { margin: 9px 0 0; font-size: 13.5px; color: #667085; }
.cl { display: flex; align-items: center; gap: 12px; }
.linkish { font: inherit; font-size: 13px; color: #3157d6; background: none; border: 0; padding: 0; cursor: pointer; }
.cl-list { margin: 12px 0 0; padding-left: 20px; font-size: 13.5px; color: #4b5565; }
.cl-list li { margin-bottom: 6px; }
.contact-line { margin: 10px 0 0; font-size: 14px; }
.foot { margin-top: 26px; padding: 22px 0 34px; border-top: 1px solid rgba(16, 24, 40, .07); }
.foot-in { display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; font-size: 12.5px; color: #667085; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 26px; padding-top: 34px; }
  .hero h1 { font-size: 30px; }
  .nav { gap: 14px; font-size: 12.5px; }
  .dl-grid, .feat-grid, .steps-grid { grid-template-columns: 1fr; }
  .wrap { width: min(1080px, 100% - 30px); }
}
@media (max-width: 420px) {
  .nav a:nth-child(4), .nav a:nth-child(5) { display: none; }
  .hero h1 { font-size: 26px; }
  body { font-size: 14.5px; }
}