:root {
  --paper: #f4efe4;
  --paper-deep: #eae3d5;
  --ink: #1b2a33;
  --ink-soft: #5d6a70;
  --muted: #8b918e;
  --accent: #c2472c;
  --card: #fbf8f0;
  --line: rgba(27, 42, 51, 0.10);
}
* { box-sizing: border-box; }
img { max-width: 100%; height: auto; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 12% 0%, rgba(255,255,255,.75), transparent 42%),
    radial-gradient(circle at 100% 100%, rgba(234,223,201,.9), transparent 46%),
    var(--paper);
  color: var(--ink);
  font: 16px/1.75 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
.wrap { max-width: 880px; margin: 0 auto; padding: 48px 24px 80px; }
header.site { display: flex; align-items: center; gap: 14px; margin-bottom: 36px; }
.mark {
  width: 46px; height: 46px; border-radius: 13px;
  background: transparent; position: relative; flex: 0 0 auto;
  border: 1.5px solid var(--accent);
  display: grid; place-items: center;
  color: var(--accent); font-family: "Songti SC", Georgia, serif;
  font-size: 24px; font-weight: 600; line-height: 1;
  box-shadow: none;
}
.mark::before, .mark::after { display: none; }
.brand-name { font-family: Georgia, "Songti SC", serif; font-size: 22px; letter-spacing: .04em; color: var(--ink); }
.brand-tag { color: var(--muted); font-size: 12px; letter-spacing: .06em; margin-top: 1px; }
nav.top { margin-left: auto; display: flex; flex-wrap: wrap; gap: 12px; }
nav.top a { color: var(--ink-soft); text-decoration: none; font-size: 13px; }
nav.top a:hover { color: var(--accent); }
h1 { font-family: Georgia, "Songti SC", serif; font-size: 38px; line-height: 1.25; margin: 8px 0 10px; font-weight: 600; }
h2 { font-family: Georgia, "Songti SC", serif; font-size: 25px; line-height: 1.35; margin: 42px 0 12px; font-weight: 600; }
h3 { font-size: 18px; margin: 28px 0 8px; }
p, li { color: var(--ink-soft); }
ul { padding-left: 22px; }
a { color: var(--accent); }
.meta { color: var(--muted); font-size: 13px; }
.card {
  background: rgba(255,252,245,.86); border: 1px solid var(--line);
  border-radius: 20px; padding: 26px 28px; margin: 24px 0;
  box-shadow: 0 18px 50px rgba(43,37,30,.06);
}
.lang-switch { display: flex; gap: 8px; margin: 18px 0 8px; }
.lang-switch a {
  display: inline-block; padding: 6px 12px; border-radius: 999px;
  background: var(--card); border: 1px solid var(--line);
  text-decoration: none; color: var(--ink-soft); font-size: 13px;
}
.lang-switch a:hover { border-color: var(--accent); color: var(--accent); }
.placeholder { background: #f6e2a8; color: #6b4e00; padding: 0 5px; border-radius: 4px; }
.notice {
  border-left: 3px solid var(--accent); background: rgba(190,82,47,.07);
  padding: 12px 16px; border-radius: 0 12px 12px 0; color: var(--ink-soft); font-size: 14px;
}
footer { margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
footer a { color: var(--muted); }

/* ===== 落地页 ===== */

section[id] { scroll-margin-top: 24px; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.72fr);
  gap: 44px;
  align-items: center;
  padding: 12px 0 8px;
}
.eyebrow {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--accent);
  text-transform: uppercase;
}
.hero h1 { font-size: 42px; margin: 0 0 16px; }
.lede { margin: 0; font-size: 16px; line-height: 1.85; color: var(--ink-soft); max-width: 44ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 12px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 24px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: transform .15s ease, background .2s ease, border-color .2s ease;
}
.btn:active { transform: scale(.985); }
.btn-primary {
  background: var(--ink);
  color: #fdf8ef;
  box-shadow: 0 14px 30px rgba(43, 37, 30, .18);
}
.btn-primary:hover { background: #3b322a; color: #fdf8ef; }
.btn-ghost {
  border: 1px solid var(--line);
  color: var(--ink);
  background: rgba(255, 252, 245, .6);
}
.btn-ghost:hover { border-color: rgba(43, 37, 30, .28); }
.btn.is-disabled {
  pointer-events: none;
  background: var(--paper-deep);
  color: var(--muted);
  box-shadow: none;
}
.btn-note { margin: 0; font-size: 12.5px; color: var(--muted); }

.trust {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  font-size: 12.5px;
  color: var(--muted);
}
.trust li { position: relative; padding-left: 12px; color: var(--muted); }
.trust li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  opacity: .55;
}

.hero-shot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 22px;
  border: 1px solid var(--line);
  box-shadow: 0 28px 60px rgba(43, 37, 30, .14);
}

.section { margin-top: 68px; }
.section > h2:first-child { margin-top: 0; }
.section-lede { max-width: 54ch; margin: -2px 0 0; font-size: 15px; color: var(--ink-soft); }

.steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}
.step-num { font-family: Georgia, "Songti SC", serif; font-size: 13px; letter-spacing: .14em; color: var(--accent); }
.steps h3 { margin: 8px 0 6px; font-size: 17px; }
.steps p { margin: 0; font-size: 14px; }

.shots {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  align-items: start;
  margin-top: 60px;
}
.shots figure { margin: 0; }
.shots img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 18px;
  border: 1px solid var(--line);
  box-shadow: 0 18px 44px rgba(43, 37, 30, .09);
}
.shots figcaption { margin-top: 10px; text-align: center; font-size: 12.5px; color: var(--muted); }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 26px;
}
.feature {
  background: rgba(255, 252, 245, .72);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px 22px;
}
.feature h3 { margin: 0 0 6px; font-size: 16px; font-family: Georgia, "Songti SC", serif; font-weight: 600; }
.feature p { margin: 0; font-size: 14px; }

.price-card {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 30px;
  margin-top: 24px;
  padding: 28px 30px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: rgba(255, 252, 245, .9);
  box-shadow: 0 20px 50px rgba(43, 37, 30, .07);
}
.price-label { margin: 0; font-size: 11px; letter-spacing: .2em; color: var(--accent); text-transform: uppercase; }
.price { margin: 6px 0 12px; font-family: Georgia, "Songti SC", serif; font-size: 46px; line-height: 1.1; color: var(--ink); }
.price span { font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif; font-size: 14px; font-weight: 400; color: var(--muted); }
.price-desc { margin: 0 0 10px; font-size: 14px; }
.price-list { margin: 0; padding-left: 20px; display: grid; gap: 8px; align-content: center; font-size: 14px; }

.privacy-band {
  margin-top: 68px;
  padding: 26px 30px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: rgba(43, 37, 30, .045);
}
.privacy-band h2 { margin: 0 0 10px; font-size: 22px; }
.privacy-band p { margin: 0 0 8px; font-size: 14px; }
.privacy-band p:last-child { margin-bottom: 0; }

details {
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}
summary {
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; float: right; color: var(--accent); font-weight: 500; }
details[open] summary::after { content: "–"; }
details p { margin: 10px 0 0; font-size: 14px; }

.site-footer { margin-top: 68px; }
.footer-brand { margin: 0 0 6px; font-family: Georgia, "Songti SC", serif; font-size: 14px; color: var(--ink); }
.site-footer p { margin: 0 0 4px; }
.icp { color: var(--muted); }

@media (max-width: 820px) {
  .hero { grid-template-columns: minmax(0, 1fr); gap: 30px; }
  .hero-shot { max-width: 300px; margin: 0 auto; min-width: 0; }
  .shots { display: flex; overflow-x: auto; gap: 16px; padding-bottom: 8px; scroll-snap-type: x mandatory; }
  .shots figure { flex: 0 0 68%; min-width: 0; scroll-snap-align: start; }
  .steps { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .price-card { grid-template-columns: 1fr; gap: 18px; }
  .hero h1 { font-size: 34px; }
}

@media (max-width: 640px) {
  .wrap { padding: 28px 18px 60px; }
  h1 { font-size: 30px; }
  h2 { font-size: 22px; }
  nav.top { width: 100%; margin-left: 0; }
  header.site { flex-wrap: wrap; }
}