:root {
  --ink: #1c1410;
  --blush: #f4e6dc;
  --rose: #c45c4a;
  --sand: #faf6f1;
  --white: #fff;
  --mute: #6b5f56;
  --line: #e7d9ce;
  --safe: 12%;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Georgia", "Songti SC", "SimSun", serif;
  color: var(--ink);
  background: var(--sand);
  line-height: 1.6;
}
img { max-width:100%;height:auto; display: block; }
a { color: inherit; text-decoration: none; }
.wrap { width: min(1080px, calc(100% - 40px)); margin-inline: auto; }
nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 62px;
}
.brand {
  font-weight: 700;
  letter-spacing: 0.04em;
}
.links {
  display: flex;
  gap: 22px;
  font-size: 0.92rem;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--rose);
  color: var(--white);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 700;
  padding: 11px 22px;
  border-radius: 999px;
}
.ghost {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-family: "PingFang SC", sans-serif;
}
.hero {
  background: var(--blush);
  padding: 40px 20px 56px;
  display: flex;
  justify-content: center;
}
.square {
  width: min(640px, 92vw);
  aspect-ratio: 1 / 1;
  background: var(--white);
  border: 1px dashed #c9b4a6;
  box-shadow: 0 18px 40px rgba(28, 20, 16, 0.08);
  position: relative;
  overflow: hidden;
}
.square::before,
.square::after {
  content: "";
  position: absolute;
  inset: var(--safe);
  pointer-events: none;
}
.square::before {
  border: 1px solid rgba(196, 92, 74, 0.28);
}
.safe {
  position: absolute;
  inset: var(--safe);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 12px;
  padding: 8px;
}
.logo-mark {
  font-size: clamp(1.6rem, 5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  white-space: nowrap;
  overflow: visible;
}
.hero h1, .page-head h1, .compact h1 {
  font-size: clamp(1.15rem, 3.2vw, 1.7rem);
  font-weight: 600;
  max-width: 90%;
  line-height: 1.3;
}
.tag { color: var(--rose); letter-spacing: 0.12em; font-size: 0.92rem; }
.lead {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 0.95rem;
  color: var(--mute);
  max-width: 28em;
}
.square.compact { margin: 0 auto; max-width: 520px; }
.page-head { padding: 36px 0 12px; }
.section { padding: 80px 0; }
.head { margin-bottom: 32px; max-width: 38em; }
.head h2, .section h2, .visual h2, .cta h2, .article h2 {
  line-height: 1.2;
}
.head p, .card p, .section p, details, footer, .person, .button, .links {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}
.grid6, .cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.card, .download-card {
  background: var(--white);
  border-radius: 4px;
  padding: 22px;
  aspect-ratio: 1 / 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--rose);
  color: var(--rose);
  display: grid;
  place-items: center;
  font-size: 0.75rem;
  margin-bottom: 12px;
  font-family: "PingFang SC", sans-serif;
}
.split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 36px;
  align-items: center;
}
.frame {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--white);
  border: 1px dashed #c9b4a6;
}
.frame img { width: 100%; height: 100%; object-fit: cover; }
.frame.small { width: 140px; }
.scene-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 18px 0 22px;
}
.scene {
  background: var(--white);
  padding: 12px 14px;
  display: flex;
  gap: 10px;
  font-family: "PingFang SC", sans-serif;
}
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.review {
  background: var(--white);
  padding: 22px;
  aspect-ratio: 1 / 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.person { color: var(--mute); }
.visual { padding: 0 0 80px; }
.metrics { display: flex; gap: 24px; margin: 18px 0; font-family: "PingFang SC", sans-serif; }
.metrics b { display: block; font-size: 1.5rem; }
.metrics small { color: var(--mute); }
.faq-layout {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 36px;
}
details { border-bottom: 1px solid var(--line); padding: 14px 0; }
summary { cursor: pointer; font-weight: 700; font-family: "PingFang SC", sans-serif; }
details p { margin-top: 8px; color: var(--mute); }
.cta { background: var(--blush); padding: 48px 0; }
.cta-in {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: center;
}
footer {
  background: var(--ink);
  color: #eadfd6;
  padding: 44px 0 22px;
  font-family: "PingFang SC", sans-serif;
}
.footer {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}
.footer h4 { color: #f0c2b8; margin-bottom: 8px; }
.footer a { display: block; margin: 6px 0; }
.copy { border-top: 1px solid #3a2e28; padding-top: 14px; font-size: 0.85rem; }
.help-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 32px;
}
.side a {
  display: block;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
  font-family: "PingFang SC", sans-serif;
}
.article { margin-bottom: 40px; }
.article .frame { margin: 16px 0; max-width: 420px; }
.policy { margin-top: 16px; padding: 16px; background: var(--white); }
@media (max-width: 960px) {
  .grid6, .cards, .review-grid, .split, .faq-layout, .cta-in, .footer, .help-layout {
    grid-template-columns: 1fr;
  }
  .card, .download-card, .review { aspect-ratio: auto; min-height: 180px; }
  .links { display: none; }
}
@media (max-width: 640px) {
  .scene-grid { grid-template-columns: 1fr; }
  .square { width: min(92vw, 92vh); }
}

@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}