:root {
  --ink: #1b1d21;
  --mute: #5c6168;
  --line: #e3e5e8;
  --paper: #f5f6f8;
  --white: #fff;
  --bar: #2f6fed;
  --bar-bg: #e8edf6;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Georgia", "Source Serif 4", "Songti SC", serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.65;
}
img { max-width:100%;height:auto; display: block; }
a { color: inherit; text-decoration: none; }
.wrap { width: min(980px, calc(100% - 40px)); margin-inline: auto; }
nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--white);
  border-bottom: 1px solid var(--line);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 58px;
}
.brand { font-weight: 700; letter-spacing: -0.03em; }
.links { display: flex; gap: 20px; font-size: 0.9rem; color: var(--mute); }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--ink);
  color: var(--white);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 650;
  padding: 9px 16px;
  border-radius: 3px;
}
.ghost {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 3px;
  font-family: "PingFang SC", sans-serif;
}
.hero { padding: 56px 0 36px; }
.kicker {
  font-family: "PingFang SC", sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mute);
  margin-bottom: 12px;
}
.hero h1, .page-head h1 {
  font-size: clamp(2rem, 4.5vw, 3.1rem);
  line-height: 1.2;
  max-width: 16em;
}
.lead { font-size: 1.12rem; color: var(--mute); margin: 12px 0; }
.verdict {
  background: var(--paper);
  border-left: 3px solid var(--ink);
  padding: 14px 16px;
  margin: 20px 0;
  font-family: "PingFang SC", sans-serif;
}
.scoreboard {
  display: grid;
  gap: 10px;
  max-width: 420px;
  margin: 18px 0 24px;
  font-family: "PingFang SC", sans-serif;
  font-size: 0.85rem;
}
.score { display: grid; grid-template-columns: 48px 1fr; gap: 10px; align-items: center; color: var(--mute); }
.score i {
  height: 6px;
  background: var(--bar-bg);
  border-radius: 99px;
  position: relative;
  display: block;
}
.score i::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: calc(var(--v) * 1%);
  background: var(--bar);
  border-radius: 99px;
}
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 28px; }
.shot {
  background: var(--paper);
  padding: 10px 10px 0;
  border: 1px solid var(--line);
}
.shot img { width: 100%; }
.shot figcaption {
  font-family: "PingFang SC", sans-serif;
  font-size: 0.8rem;
  color: var(--mute);
  padding: 8px 4px 10px;
}
.section { padding: 72px 0; }
.head { margin-bottom: 28px; max-width: 40em; }
.head p, .card p, .section p, details, footer, .person, .scene, .cta, .visual-copy {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}
.grid6, .cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.card, .download-card {
  background: var(--paper);
  padding: 18px;
  border: 1px solid var(--line);
}
.icon { font-size: 0.78rem; color: var(--mute); margin-bottom: 8px; font-family: "PingFang SC", sans-serif; }
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: start;
}
.scene-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 16px 0 20px;
}
.scene {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 10px 12px;
  display: flex;
  gap: 8px;
}
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.review { border-top: 2px solid var(--ink); padding: 16px 0; }
.person { margin-top: 12px; color: var(--mute); display: flex; flex-direction: column; }
.visual { padding: 0 0 72px; }
.shot.wide { margin-bottom: 20px; }
.visual-copy { max-width: 40em; }
.faq-layout {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 32px;
}
details { border-bottom: 1px solid var(--line); padding: 12px 0; }
summary { cursor: pointer; font-weight: 700; font-family: "PingFang SC", sans-serif; }
details p { margin-top: 8px; color: var(--mute); }
.cta { background: var(--paper); padding: 40px 0; border-top: 1px solid var(--line); }
.cta-in { display: flex; justify-content: space-between; gap: 20px; align-items: center; }
footer {
  background: var(--ink);
  color: #c9ccd1;
  padding: 40px 0 20px;
  font-family: "PingFang SC", sans-serif;
}
.footer {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 22px;
  margin-bottom: 22px;
}
.footer a, .footer .brand { color: #eef0f3; }
.footer h4 { color: #9aa1aa; margin-bottom: 8px; }
.footer a { display: block; margin: 6px 0; }
.copy { border-top: 1px solid #33363b; padding-top: 12px; font-size: 0.82rem; }
.page-head { padding: 48px 0 8px; }
.help-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 28px;
}
.side a {
  display: block;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
  font-family: "PingFang SC", sans-serif;
}
.article { margin-bottom: 36px; }
.article .shot { margin: 14px 0; }
.policy { margin-top: 14px; padding: 14px; background: var(--paper); border: 1px solid var(--line); }
@media (max-width: 900px) {
  .grid6, .cards, .review-grid, .split, .faq-layout, .footer, .help-layout, .cta-in {
    grid-template-columns: 1fr;
  }
  .links { display: none; }
}
@media (max-width: 640px) {
  .scene-grid { grid-template-columns: 1fr; }
}

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