:root {
  color-scheme: light;
  font-family: "Microsoft YaHei UI", "PingFang SC", Inter, system-ui, sans-serif;
  color: #173033;
  background: #f2f7f6;
}

* { box-sizing: border-box; }
html { min-height: 100%; }
body { min-height: 100vh; margin: 0; background: radial-gradient(circle at 15% 0, #dcf6f0 0, transparent 34rem), #f2f7f6; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding: 10px clamp(18px, 5vw, 72px);
  border-bottom: 1px solid #dce8e6;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(14px);
}

.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; }
.brand-logo { display: block; width: 40px; height: 40px; border: 1px solid #d5e2e0; border-radius: 11px; object-fit: cover; box-shadow: 0 8px 20px #173a401b; }
.top-actions { display: flex; align-items: center; gap: 10px; }
.top-link { padding: 8px 12px; border-radius: 9px; color: #5d7173; text-decoration: none; font-size: 13px; }
.top-link:hover { background: #eaf5f3; color: #087d72; }

.page { width: min(1120px, calc(100% - 32px)); margin: 0 auto; padding: 48px 0 64px; }
.hero { display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: center; margin-bottom: 26px; }
.eyebrow { margin: 0 0 9px; color: #087d72; font-size: 13px; font-weight: 800; letter-spacing: .08em; }
h1 { margin: 0; font-size: clamp(28px, 4.8vw, 48px); line-height: 1.15; letter-spacing: -.035em; }
.lead { max-width: 760px; margin: 15px 0 0; color: #607476; font-size: 16px; line-height: 1.75; }
.hero-icon { display: grid; place-items: center; width: 104px; height: 104px; border: 1px solid #d8e7e4; border-radius: 28px; background: white; box-shadow: 0 18px 48px #183b3f17; font-size: 50px; }

.compatibility { display: inline-flex; gap: 8px; align-items: center; margin-top: 18px; padding: 8px 12px; border-radius: 999px; color: #087d72; background: #ddf4ef; font-size: 12px; font-weight: 700; }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.card { padding: 24px; border: 1px solid #dae6e4; border-radius: 18px; background: rgba(255,255,255,.96); box-shadow: 0 12px 34px #173a400c; }
.card.wide { grid-column: 1 / -1; }
.card h2 { display: flex; align-items: center; gap: 9px; margin: 0 0 15px; font-size: 18px; }
.card h2 span { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 9px; color: #087d72; background: #e1f5f1; font-size: 14px; }
.card p { margin: 0; color: #52696b; line-height: 1.75; }
.list { display: grid; gap: 11px; margin: 0; padding: 0; list-style: none; counter-reset: steps; }
.list li { position: relative; padding-left: 30px; color: #40595b; line-height: 1.7; }
.list li::before { position: absolute; left: 0; top: .16em; display: grid; place-items: center; width: 21px; height: 21px; border-radius: 7px; color: #087d72; background: #e5f5f2; content: "✓"; font-size: 11px; font-weight: 900; }
.list.ordered { counter-reset: guide; }
.list.ordered li { padding: 13px 14px 13px 48px; border-radius: 12px; background: #f6f9f8; }
.list.ordered li::before { top: 13px; left: 14px; content: counter(guide); counter-increment: guide; color: white; background: #12a898; }
.warning { border-color: #f2d8a7; background: #fffaf0; }
.warning h2 span { color: #9a6500; background: #ffedc9; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 0 17px; border-radius: 11px; text-decoration: none; font-size: 13px; font-weight: 800; }
.button.primary { color: white; background: #0e9f91; box-shadow: 0 9px 24px #0e9f9138; }
.button.secondary { border: 1px solid #d6e3e1; background: white; color: #315153; }
.button:hover { transform: translateY(-1px); }

.topic-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 28px; }
.topic { display: block; min-height: 174px; padding: 22px; border: 1px solid #d8e5e3; border-radius: 18px; background: white; text-decoration: none; box-shadow: 0 12px 32px #173a400b; transition: .18s ease; }
.topic:hover { transform: translateY(-3px); border-color: #8fd2c9; box-shadow: 0 18px 42px #173a4018; }
.topic-icon { font-size: 34px; }
.topic h2 { margin: 14px 0 7px; font-size: 17px; }
.topic p { margin: 0; color: #687b7d; font-size: 13px; line-height: 1.6; }
.footer { margin-top: 34px; color: #879698; text-align: center; font-size: 11px; }

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; }
  .hero-icon { display: none; }
  .grid, .topic-grid { grid-template-columns: 1fr; }
  .page { padding-top: 32px; }
}

@media print {
  .topbar, .actions { display: none; }
  body { background: white; }
  .page { width: 100%; padding: 0; }
  .card { break-inside: avoid; box-shadow: none; }
}