:root {
  --ink: #2b2622;
  --accent: #6b4f3a;
  --sand: #f3efe8;
  --line: #e0d8cc;
  --muted: #6f675f;
  --white: #fff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", sans-serif;
  color: var(--ink);
  background: var(--sand);
  line-height: 1.75;
  padding-bottom: 72px;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }
.wrap { width: min(1040px, calc(100% - 32px)); margin: 0 auto; }
.site-header { background: #fff; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 20; }
.site-header .wrap { display: flex; align-items: center; gap: 20px; min-height: 68px; }
.logo { color: var(--ink); font-weight: 700; }
.logo small { display: block; font-weight: 400; color: var(--muted); font-size: 12px; }
.nav { display: flex; gap: 16px; flex: 1; flex-wrap: wrap; }
.nav a.cta { background: var(--accent); color: #fff; padding: 8px 14px; text-decoration: none; }
.header-phone { color: var(--accent); font-weight: 600; }
.hero { padding: 40px 0; display: grid; grid-template-columns: 160px 1fr; gap: 28px; align-items: center; }
.hero img { width: 160px; height: 200px; object-fit: cover; background: #ddd; }
.hero h1 { margin: 0 0 8px; font-size: clamp(26px, 4vw, 36px); }
.section { padding: 36px 0; }
.grid { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.card { background: #fff; padding: 18px; border: 1px solid var(--line); }
.btn, button[type=submit] {
  display: inline-block; background: var(--accent); color: #fff; border: 0;
  padding: 10px 16px; cursor: pointer; font: inherit;
}
.trust { background: #fff; padding: 14px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.trust ul { display: flex; flex-wrap: wrap; gap: 12px 28px; list-style: none; margin: 0; padding: 0; }
.site-footer { background: #2b2622; color: #ece7df; padding: 32px 0 96px; font-size: 14px; }
.site-footer a { color: #f3e6d6; }
.site-footer .beian a { text-decoration: underline; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 20px; }
.footer-links { margin-top: 24px; }
.footer-links > p:first-child { margin: 0 0 8px; font-weight: 600; color: #fff; }
.footer-inline { line-height: 1.9; margin: 0; }
.footer-inline a { white-space: nowrap; }
.footer-tech {
  margin: 20px auto 0; padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,.12);
  font-size: 12px; color: rgba(236,231,223,.5); text-align: center;
}
.footer-tech a { color: rgba(243,230,214,.75); text-decoration: underline; text-underline-offset: 2px; }
.footer-tech a:hover { color: #fff; }
.form label { display: block; margin: 10px 0 4px; }
.form input, .form textarea, .form select { width: 100%; padding: 8px 10px; border: 1px solid var(--line); font: inherit; }
.form .hp { position: absolute; left: -9999px; }
.disclaimer { font-size: 13px; color: var(--muted); }
.mobile-bar {
  position: fixed; left: 0; right: 0; bottom: 0; background: #fff;
  display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); z-index: 30;
}
.mobile-bar a, .mobile-bar button { background: none; border: 0; padding: 10px 4px; text-align: center; color: var(--accent); font: inherit; font-size: 13px; }
.modal { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 40; align-items: center; justify-content: center; }
.modal.is-open { display: flex; }
.modal-box { background: #fff; padding: 24px; max-width: 360px; width: 90%; text-align: center; }
.pc-convert { display: none; }
.author { display: flex; gap: 12px; align-items: center; }
.author img { width: 56px; height: 56px; object-fit: cover; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.meta { color: var(--muted); font-size: 14px; }
@media (min-width: 900px) {
  body { padding-bottom: 0; }
  .mobile-bar { display: none; }
  .pc-convert { display: flex; gap: 16px; justify-content: flex-end; padding: 8px 0; }
  .site-footer { padding-bottom: 36px; }
}
@media (max-width: 899px) {
  .nav { display: none; }
  .hero, .steps, .footer-grid { grid-template-columns: 1fr; }
}