:root {
  color-scheme: light;
  --ink: #30362d;
  --muted: #7a8074;
  --sage: #83947a;
  --sage-dark: #556a50;
  --ivory: #fbfbf6;
  --line: rgba(78, 94, 71, .14);
  --gold: #cda94b;
}

* { box-sizing: border-box; }
html { overflow-x: hidden; background: #eaf0e4; }
body {
  overflow-x: hidden;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    linear-gradient(rgba(108, 131, 100, .08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108, 131, 100, .08) 1px, transparent 1px),
    radial-gradient(circle at 50% -20%, #fff 0, #f5f8f1 36%, #eaf0e4 100%);
  background-size: 52px 52px, 52px 52px, auto;
}

a { color: var(--sage-dark); }
.shell { width: calc(100% - 32px); max-width: 920px; margin: 0 auto; padding: 28px 0 64px; }
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
  color: inherit;
  text-decoration: none;
}
.brand img { width: 48px; height: 62px; object-fit: contain; }
.brand strong { display: block; font-family: "Songti SC", "STSong", serif; font-size: 30px; letter-spacing: .06em; }
.brand span { display: block; color: var(--muted); font-size: 12px; font-weight: 750; letter-spacing: .12em; }
.hero,
.card {
  border: 1px solid rgba(255,255,255,.9);
  border-radius: 34px;
  background: rgba(255,255,252,.82);
  box-shadow: 0 24px 70px rgba(67, 81, 60, .12), inset 0 0 0 1px var(--line);
  backdrop-filter: blur(18px);
}
.hero { padding: clamp(32px, 6vw, 64px); }
.eyebrow { margin: 0 0 12px; color: var(--sage-dark); font-size: 13px; font-weight: 900; letter-spacing: .16em; }
h1 { margin: 0; font-size: clamp(38px, 7vw, 64px); line-height: 1.08; letter-spacing: -.04em; }
.lead { max-width: 680px; margin: 18px 0 0; color: #626a5e; font-size: 17px; font-weight: 620; line-height: 1.8; }
.actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 34px; }
.action {
  display: grid;
  gap: 8px;
  min-height: 132px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 24px;
  color: inherit;
  text-decoration: none;
  background: linear-gradient(145deg, rgba(255,255,255,.9), rgba(235,241,229,.86));
}
.action strong { font-size: 20px; }
.action span { color: var(--muted); line-height: 1.55; }
.action b { align-self: end; color: var(--sage-dark); font-size: 13px; }
.card { margin-top: 18px; padding: clamp(24px, 5vw, 46px); }
.card h2 { margin: 0 0 18px; font-size: 27px; }
.card h3 { margin: 32px 0 10px; font-size: 19px; }
.card p, .card li { overflow-wrap: anywhere; color: #5f665a; font-size: 1rem; line-height: 1.85; }
.card ul { padding-left: 22px; }
.notice { margin: 22px 0 0; padding: 16px 18px; border-left: 4px solid var(--gold); border-radius: 14px; background: rgba(205,169,75,.1); color: #6d6142; line-height: 1.7; }
.meta { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 28px; color: var(--muted); font-size: 12px; }
.back { display: inline-flex; margin-bottom: 16px; color: var(--sage-dark); font-weight: 800; text-decoration: none; }
footer { padding: 28px 8px 0; color: var(--muted); font-size: 12px; text-align: center; }

@media (max-width: 640px) {
  .shell { width: calc(100% - 20px); padding-top: 18px; }
  .actions { grid-template-columns: 1fr; }
  .hero, .card { border-radius: 26px; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}

.card h2 { margin-top: 28px; }
a:focus-visible { outline: 3px solid #556a50; outline-offset: 5px; }

/* Build 10 使用指南，沿用七穿网格与绿色品牌。 */
.quick-guide { margin-top: 36px; }
.quick-guide h2 { margin-bottom: 14px; font-size: 24px; }
.quick-guide ol { margin: 0; padding-left: 22px; }
.quick-guide li { padding: 7px 0; font-size: 1rem; line-height: 1.8; color: #5f665a; }
.quick-guide strong { color: var(--ink); }
.action b { font-size: 14px; }
.meta, footer { font-size: 14px; }
.hero, .card { overflow-wrap: anywhere; }