:root {
  --bg: #f4f6f8;
  --ink: #121417;
  --mute: #5c6570;
  --line: #dce1e6;
  --white: #fff;
  --btn: #111;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "SF Pro Text", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}
img { max-width:100%;height:auto; display: block; }
a { color: inherit; text-decoration: none; }
.wrap { width: min(560px, calc(100% - 32px)); margin-inline: auto; }
nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(244,246,248,0.94);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 52px;
}
.brand { font-weight: 750; }
.links { display: none; gap: 14px; font-size: 0.85rem; color: var(--mute); }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--btn);
  color: #fff;
  font-weight: 750;
  padding: 10px 14px;
  border-radius: 12px;
}
.button.wide { width: 100%; min-height: 52px; margin-top: 16px; }
.ghost { padding: 10px 12px; color: var(--mute); }
.hero {
  position: relative;
  padding: 48px 0 36px;
  text-align: center;
  overflow: hidden;
}
.hero-in { position: relative; z-index: 1; }
.kicker { font-size: 1.15rem; font-weight: 750; margin-bottom: 10px; }
.hero h1, .page-head h1 {
  font-size: clamp(1.55rem, 6vw, 2rem);
  line-height: 1.25;
}
.lead { color: var(--mute); margin: 10px 0 12px; }
.desk {
  position: absolute;
  right: -8%;
  top: 12%;
  width: 42%;
  max-width: 420px;
  height: 220px;
  object-fit: cover;
  opacity: 0.18;
  border-radius: 16px;
  pointer-events: none;
}
.section { padding: 56px 0; }
.head { margin-bottom: 20px; }
.grid6, .cards, .review-grid {
  display: grid;
  gap: 12px;
}
.card, .download-card, .review, .scene, .policy {
  background: var(--white);
  border-radius: 14px;
  padding: 16px;
}
.icon { color: var(--mute); font-size: 0.75rem; margin-bottom: 6px; }
.split { display: grid; gap: 18px; }
.split img, .shot img, .visual img {
  width: 100%;
  object-fit: cover;
  border-radius: 14px;
}
.scene-grid { display: grid; gap: 8px; margin: 14px 0; }
.scene { display: flex; gap: 8px; }
.person { margin-top: 10px; color: var(--mute); display: flex; flex-direction: column; }
.visual { padding: 0 0 56px; text-align: center; }
.faq-layout { display: grid; gap: 18px; }
details { border-bottom: 1px solid var(--line); padding: 12px 0; text-align: left; }
summary { cursor: pointer; font-weight: 700; }
details p { margin-top: 8px; color: var(--mute); }
.cta { padding: 20px 0 56px; text-align: center; }
footer {
  background: #121417;
  color: #b7bec6;
  padding: 28px 0 16px;
}
.footer { display: grid; gap: 16px; margin-bottom: 16px; }
.footer .brand { color: #fff; }
.footer h4 { color: #7d858e; margin-bottom: 8px; }
.footer a { display: block; margin: 6px 0; }
.copy { border-top: 1px solid #2a3036; padding-top: 12px; font-size: 0.78rem; }
.page-head { padding: 36px 0 8px; text-align: center; }
.help-layout { display: grid; gap: 20px; }
.side a { display: block; padding: 8px 0; border-bottom: 1px solid var(--line); color: var(--mute); }
.article { margin-bottom: 28px; text-align: left; }
.article .shot { margin: 14px 0; }
.policy { margin-top: 14px; }
@media (min-width: 900px) {
  .wrap { width: min(720px, calc(100% - 40px)); }
  .links { display: flex; }
  .grid6, .cards { grid-template-columns: 1fr 1fr; }
  .desk { opacity: 0.28; }
}

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