:root {
  --ink: #1c1914;
  --muted: #5c564c;
  --line: #e4ddd0;
  --paper: #f7f3ea;
  --card: #fffdf8;
  --accent: #b8792a;
  --accent-ink: #6b4210;
  --ok: #2f6b4f;
  --warn-bg: #fff4e5;
  --tip-bg: #eef6f0;
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --display: "Noto Serif SC", "Songti SC", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(900px 420px at 10% -10%, rgba(184, 121, 42, 0.12), transparent 60%),
    radial-gradient(700px 360px at 100% 0%, rgba(47, 107, 79, 0.08), transparent 55%),
    var(--paper);
  line-height: 1.65;
}

.hb-bar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 12px 28px;
  background: rgba(247, 243, 234, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.hb-brand {
  font-family: var(--display);
  font-weight: 700; color: var(--ink); text-decoration: none; font-size: 16px;
}
.hb-nav { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.hb-nav a {
  color: var(--muted); text-decoration: none; font-size: 14px;
}
.hb-nav a:hover { color: var(--accent-ink); }
.hb-cta {
  background: var(--accent); color: #fff !important;
  padding: 8px 14px; border-radius: 8px; font-weight: 600;
}

.hb {
  max-width: 820px;
  margin: 0 auto;
  padding: 36px 20px 64px;
}
.hb-hero { margin-bottom: 28px; }
.hb-eyebrow {
  color: var(--accent-ink); font-size: 13px; font-weight: 600;
  letter-spacing: 0.06em; margin: 0 0 8px;
}
.hb-hero h1 {
  font-family: var(--display);
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.25; margin: 0 0 12px;
}
.hb-lead { color: var(--muted); font-size: 16px; margin: 0 0 16px; }
.hb-promise {
  margin: 0; padding: 14px 14px 14px 34px;
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
}
.hb-promise li { margin: 4px 0; }

.hb-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px 26px;
  margin-bottom: 18px;
}
.hb-card h2 {
  font-family: var(--display);
  font-size: 22px; margin: 0 0 8px;
}
.hb-sub { color: var(--muted); margin: 0 0 16px; }
.hb-card h3 { font-size: 16px; margin: 0 0 8px; }

.hb-checklist { list-style: none; margin: 0; padding: 0; counter-reset: ck; }
.hb-checklist > li {
  counter-increment: ck;
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 4px 12px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}
.hb-checklist > li:first-child { border-top: 0; }
.hb-checklist > li::before {
  content: counter(ck);
  width: 36px; height: 36px;
  border-radius: 50%;
  background: #f0e6d4; color: var(--accent-ink);
  font-weight: 700; display: grid; place-items: center;
  grid-row: span 2;
}
.hb-checklist strong { font-size: 15px; }
.hb-checklist span { color: var(--muted); font-size: 14px; grid-column: 2; }

.hb-tip, .hb-warn {
  margin-top: 16px; padding: 12px 14px; border-radius: 10px; font-size: 14px;
}
.hb-tip { background: var(--tip-bg); color: var(--ok); }
.hb-warn { background: var(--warn-bg); color: var(--accent-ink); }

.hb-grid2 {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 8px;
}
.hb-grid2 > div {
  padding: 14px; border: 1px solid var(--line); border-radius: 12px; background: #fff;
}
.hb-grid2 p { margin: 0; color: var(--muted); font-size: 14px; }

.hb-flow {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  margin: 18px 0 0; padding: 14px;
  background: #fff; border: 1px dashed var(--line); border-radius: 12px;
}
.hb-flow div {
  background: #f0e6d4; color: var(--accent-ink);
  padding: 6px 10px; border-radius: 8px; font-size: 13px; font-weight: 600;
}
.hb-flow i { color: var(--muted); font-style: normal; }

.hb-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.hb-table th, .hb-table td {
  border-bottom: 1px solid var(--line);
  text-align: left; padding: 10px 8px; vertical-align: top;
}
.hb-table th { color: var(--muted); font-weight: 600; font-size: 13px; }

.hb-step { padding: 14px 0; border-top: 1px solid var(--line); }
.hb-step:first-of-type { border-top: 0; }
.hb-step h3 {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--display); font-size: 18px;
}
.hb-step h3 span {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--accent); color: #fff;
  display: grid; place-items: center; font-size: 14px; font-family: var(--font);
}
.hb-step ul, .hb-step ol { margin: 8px 0 0; padding-left: 20px; color: var(--muted); }
.hb-step p { margin: 8px 0 0; color: var(--muted); }

.hb-faq dt {
  font-weight: 700; margin-top: 14px; font-size: 15px;
}
.hb-faq dt:first-child { margin-top: 0; }
.hb-faq dd {
  margin: 4px 0 0; color: var(--muted); font-size: 14px;
}

.hb-ok { color: var(--ok); }
.hb-next { color: var(--muted); }
.hb-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.hb-btn {
  display: inline-block; text-decoration: none;
  background: var(--accent); color: #fff;
  padding: 10px 16px; border-radius: 8px; font-weight: 600; font-size: 14px;
}
.hb-btn--ghost {
  background: transparent; color: var(--accent-ink);
  border: 1px solid var(--line);
}

.hb-foot {
  max-width: 820px; margin: 0 auto;
  padding: 8px 20px 40px;
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px;
  color: var(--muted); font-size: 12px;
}

@media (max-width: 720px) {
  .hb-bar { flex-direction: column; align-items: flex-start; }
  .hb-grid2 { grid-template-columns: 1fr; }
  .hb-nav a:not(.hb-cta) { display: none; }
}

@media print {
  .hb-bar, .hb-actions, .hb-foot span:last-child { display: none; }
  body { background: #fff; }
  .hb-card { break-inside: avoid; box-shadow: none; }
}