:root {
  --ink: #14343a;
  --teal: #0d7377;
  --teal-deep: #0a5558;
  --coral: #e85d4c;
  --coral-dark: #c94a3b;
  --cream: #f7f3e9;
  --paper: #fffdf8;
  --line: #d8d0be;
  --muted: #5c6b6d;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--cream);
  line-height: 1.75;
  font-size: 17px;
}

img, svg { vertical-align: middle; }

a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--coral); }

.wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }

.brand-mark {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--paper);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.brand-mark svg { flex-shrink: 0; }

.topbar {
  background: var(--teal-deep);
  color: #e8f4f4;
  font-size: 13px;
  padding: 8px 0;
}

.topbar .wrap { display: flex; justify-content: space-between; gap: 16px; }

.site-header {
  background: var(--teal);
  position: sticky;
  top: 0;
  z-index: 20;
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.08);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}

.nav-main { display: flex; gap: 6px; flex-wrap: wrap; }

.nav-main a {
  color: #e7f6f6;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid transparent;
}

.nav-main a:hover,
.nav-main a.is-current {
  background: var(--paper);
  color: var(--teal-deep);
  border-color: var(--paper);
}

.hero-split {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  padding: 56px 0 40px;
  align-items: center;
}

.hero-split h1 {
  font-family: "Palatino Linotype", "Songti SC", serif;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.35;
  margin: 12px 0 18px;
}

.kicker {
  color: var(--coral);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.lead { color: var(--muted); margin-bottom: 22px; }

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 18px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 6px;
  font-weight: 700;
  border: 2px solid transparent;
}

.btn-coral {
  background: var(--coral);
  color: #fff;
  border-color: var(--coral);
}

.btn-coral:hover { background: var(--coral-dark); color: #fff; }

.btn-ghost {
  background: transparent;
  color: var(--teal-deep);
  border-color: var(--teal);
}

.btn-ghost:hover { background: #dff3f3; color: var(--teal-deep); }

.mini-facts {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--muted);
}

.mini-facts span { display: inline-flex; align-items: center; gap: 6px; }

.download-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 12px 12px 0 var(--teal);
}

.download-card h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.download-card p { font-size: 15px; color: var(--muted); margin-bottom: 16px; }

.platform-list { display: grid; gap: 10px; }

.platform-list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 12px;
  background: var(--cream);
  border-radius: 8px;
  color: var(--ink);
}

.platform-list a:hover { background: #e5f4f4; color: var(--teal-deep); }

.scene-band { padding: 28px 0; }

.scene-band h2 {
  font-family: "Palatino Linotype", "Songti SC", serif;
  font-size: 28px;
  margin-bottom: 14px;
}

.scene-row {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 22px;
  background: var(--paper);
  border-left: 6px solid var(--teal);
  padding: 22px 26px;
}

.scene-row.alt { border-left-color: var(--coral); background: #fff7f5; }

.scene-index {
  font-family: "Palatino Linotype", serif;
  font-size: 40px;
  color: var(--teal);
  line-height: 1;
}

.scene-row.alt .scene-index { color: var(--coral); }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.panel {
  background: var(--paper);
  padding: 22px;
  border-radius: 12px;
  border: 1px solid var(--line);
}

.panel h2 { font-size: 22px; margin-bottom: 10px; }

table.plain {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper);
}

table.plain th,
table.plain td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
}

table.plain th { background: var(--teal); color: #fff; font-weight: 600; }

.faq-stack { display: grid; gap: 14px; }

.faq-item {
  background: var(--paper);
  padding: 16px 18px;
  border-radius: 10px;
  border-bottom: 3px solid var(--teal);
}

.faq-item h3 { font-size: 17px; margin-bottom: 6px; }

.site-footer {
  margin-top: 48px;
  background: #102428;
  color: #c9d6d7;
  padding: 36px 0 28px;
  font-size: 14px;
}

.site-footer a { color: #9ee0e2; }

.foot-nav { display: flex; gap: 18px; margin: 12px 0 18px; flex-wrap: wrap; }

.safe-line { color: #f3d27a; margin-bottom: 10px; }

.legal { color: #8b9a9b; }

@media (max-width: 860px) {
  .hero-split,
  .two-col,
  .scene-row { grid-template-columns: 1fr; }
  .download-card { box-shadow: 6px 6px 0 var(--teal); }
  .site-header .wrap { flex-direction: column; padding: 12px 0; }
}