:root {
  --qing: #143c3a;
  --qing-deep: #0c2a29;
  --red: #c23a2b;
  --paper: #f6f1e6;
  --ink: #1d2a28;
  --muted: #5d6a66;
  --line: #d7cfc0;
  --gold: #c2a36b;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.8;
}
a { color: inherit; text-decoration: none; }
img { max-width:100%;height:auto; display: block; }
.wrap { width: min(1080px, calc(100% - 48px)); margin: 0 auto; }
nav {
  position: sticky; top: 0; z-index: 20;
  background: rgba(246, 241, 230, .94);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; gap: 28px; min-height: 76px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; letter-spacing: .12em; }
.seal {
  width: 34px; height: 34px; display: grid; place-items: center;
  background: var(--red); color: #fff; font-size: 16px;
  box-shadow: inset 0 0 0 2px rgba(255,255,255,.25);
}
.links { display: flex; gap: 28px; margin-left: auto; font-size: 14px; letter-spacing: .16em; color: var(--muted); }
.button {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 22px; background: var(--red); color: #fff;
  font-size: 14px; letter-spacing: .18em; border: 0;
}
.button.ghost { background: transparent; color: var(--qing); box-shadow: inset 0 0 0 1px var(--qing); }
.hero { position: relative; padding: 72px 0 40px; overflow: hidden; }
.cloud {
  position: absolute; right: -8%; top: 18px; width: 340px; height: 140px; opacity: .18;
  background:
    radial-gradient(circle at 30% 60%, var(--qing) 0 28%, transparent 29%),
    radial-gradient(circle at 52% 48%, var(--qing) 0 32%, transparent 33%),
    radial-gradient(circle at 74% 62%, var(--qing) 0 26%, transparent 27%);
}
.hero-row { display: grid; grid-template-columns: 1.05fr .95fr; gap: 64px; align-items: center; }
.kicker {
  font-size: 13px; letter-spacing: .42em; color: var(--red); margin-bottom: 18px;
}
h1 { font-size: clamp(32px, 4.4vw, 48px); line-height: 1.28; font-weight: 700; margin-bottom: 16px; }
.lead { font-size: 18px; margin-bottom: 12px; }
.actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.frame { border: 1px solid var(--line); padding: 12px; background: #fff; }
.frame img { width: 100%; height: 360px; object-fit: cover; }
.frame figcaption {
  margin-top: 10px; font-size: 13px; letter-spacing: .2em; color: var(--muted); text-align: center;
}
.section { padding: 88px 0; }
.head { max-width: 560px; margin-bottom: 36px; }
h2 { font-size: 28px; font-weight: 700; margin-bottom: 12px; }
.grid6 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px 24px; }
.card { padding: 8px 4px 0; border-top: 1px solid var(--line); }
.icon { color: var(--red); letter-spacing: .3em; font-size: 13px; margin: 14px 0 8px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split img, .shot img { width: 100%; height: 340px; object-fit: cover; border: 1px solid var(--line); }
.scene-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 20px; margin: 22px 0 28px; }
.scene { display: flex; gap: 10px; align-items: baseline; padding-bottom: 8px; border-bottom: 1px dashed var(--line); }
.scene b { color: var(--red); font-weight: 500; }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.review { padding-top: 16px; border-top: 1px solid var(--qing); }
.person { margin-top: 16px; display: flex; flex-direction: column; letter-spacing: .08em; }
.person small { color: var(--muted); }
.visual { padding: 0 0 88px; }
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 24px 0 28px; }
.metrics div { text-align: center; padding: 12px 0; border-bottom: 1px solid var(--line); }
.metrics b { display: block; font-size: 22px; color: var(--qing); }
.metrics small { color: var(--muted); }
.faq-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 56px; }
details { padding: 14px 0; border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 700; letter-spacing: .08em; }
details p { margin-top: 8px; color: var(--muted); }
.cta { background: var(--qing-deep); color: #f6f1e6; padding: 56px 0; }
.cta-in { display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.cta .button { background: var(--red); }
footer { padding: 48px 0 24px; border-top: 1px solid var(--line); }
.footer { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 24px; }
.footer h4 { margin-bottom: 10px; letter-spacing: .2em; font-size: 13px; color: var(--qing); }
.footer a, .footer p { display: block; color: var(--muted); font-size: 14px; margin-top: 8px; }
.copy { margin-top: 28px; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; letter-spacing: .08em; }
.page-head { padding: 64px 0 8px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.download-card { padding: 28px 8px; border-top: 2px solid var(--qing); }
.help-layout { display: grid; grid-template-columns: 200px 1fr; gap: 40px; }
.side { position: sticky; top: 96px; align-self: start; }
.side a { display: block; padding: 8px 0; letter-spacing: .16em; color: var(--muted); border-bottom: 1px dashed var(--line); }
.article { padding: 8px 0 32px; }
.policy { margin-top: 20px; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); }
@media (max-width: 900px) {
  .links { display: none; }
  .hero-row, .split, .faq-layout, .help-layout, .cta-in, .cards, .footer { grid-template-columns: 1fr; }
  .grid6, .review-grid { grid-template-columns: 1fr 1fr; }
  .frame img, .split img, .shot img { height: 220px; }
  .wrap { width: min(1080px, calc(100% - 28px)); }
}
@media (max-width: 560px) {
  .grid6, .review-grid, .metrics { grid-template-columns: 1fr; }
}

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