:root {
  --page: #FFFEFA;
  --surface: #FFFFFF;
  --ink: #343434;
  --ink-soft: #393C4A;
  --muted: #7C7C88;
  --line: #EFE9DC;
  --orange: #FF8533;
  --orange-deep: #FA6C35;
  --coral: #FF6466;
  --coral-deep: #E85152;
  --yellow: #FFD63E;
  --yellow-deep: #F5B72B;
  --sky: #89E9FF;
  --panel: #FFF6C1;
  --radius: 22px;
  --max: 1080px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

a { color: var(--orange-deep); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; }
h2 { font-size: 1.6rem; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }

.top {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  max-width: var(--max); margin: 0 auto; padding: 12px 20px;
  background: rgba(255, 254, 250, .92); backdrop-filter: blur(8px);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700; font-size: 1.1rem; }
.brand:hover { text-decoration: none; }
.brand-icon { width: 44px; height: 44px; border-radius: 12px; }
.top-cta {
  padding: 8px 16px; border-radius: 999px; background: var(--orange); color: #fff; font-weight: 600; white-space: nowrap;
}
.top-cta:hover { background: var(--orange-deep); text-decoration: none; }

main { max-width: var(--max); margin: 0 auto; padding: 0 20px 40px; }
section { padding: 40px 0; }
section + section { border-top: 1px solid var(--line); }

.hero { display: grid; grid-template-columns: 1.1fr .9fr; gap: 32px; align-items: center; padding-top: 24px; }
.eyebrow { color: var(--coral-deep); font-weight: 600; letter-spacing: .04em; margin-bottom: .4em; }
.hero h1 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); color: var(--ink-soft); }
.lead { font-size: 1.1rem; color: var(--ink-soft); max-width: 34em; }
.hero-art img { width: 100%; border-radius: var(--radius); background: var(--panel); }

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: stretch; margin: 20px 0 12px; }
.btn {
  display: inline-flex; flex-direction: column; justify-content: center; gap: 2px;
  padding: 14px 24px; border-radius: 16px; font-weight: 700; font-size: 1.05rem; line-height: 1.3; text-align: center;
}
.btn:hover { text-decoration: none; }
.btn small { font-weight: 400; font-size: .8rem; opacity: .9; }
.btn-primary { background: linear-gradient(180deg, var(--orange), var(--orange-deep)); color: #fff; box-shadow: 0 8px 20px rgba(250, 108, 53, .28); }
.btn-primary:hover { filter: brightness(1.05); }
.btn-ghost { background: var(--surface); color: var(--ink-soft); border: 2px solid var(--line); }
.btn-ghost:hover { border-color: var(--orange); color: var(--orange-deep); }
.note { color: var(--muted); font-size: .95rem; }

.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 22px 8px;
  border-top-width: 6px;
}
.card-audio { border-top-color: var(--coral); }
.card-video { border-top-color: var(--orange); }
.card-tasks { border-top-color: var(--yellow-deep); }
.card-ask   { border-top-color: var(--sky); }
.card p { color: var(--ink-soft); }

.steps { padding-left: 1.3em; margin: 0 0 1em; }
.steps li { margin-bottom: .6em; }

.contact-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 0 0 1em; }
.contact-list div { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 14px 16px; }
.contact-list dt { color: var(--muted); font-size: .85rem; }
.contact-list dd { margin: 4px 0 0; font-weight: 600; word-break: break-all; }

.foot { border-top: 1px solid var(--line); padding: 24px 20px 40px; text-align: center; color: var(--muted); font-size: .9rem; }
.foot-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 20px; margin-bottom: 10px; }
.foot-links a { color: var(--ink-soft); }
.foot-legal a { color: var(--muted); }

@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; gap: 20px; }
  .hero-art { order: -1; }
  .grid, .contact-list { grid-template-columns: 1fr; }
  .btn { width: 100%; }
  .top-cta { display: none; }
  section { padding: 30px 0; }
}