:root {
  --bg: #eefbfb;
  --paper: #ffffff;
  --ink: #12333a;
  --brand: #0d7377;
  --hi: #14919b;
  --line: #bfe3e4;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: "Trebuchet MS", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
}
a { color: var(--brand); }
.site-header { background: var(--brand); }
.header-inner {
  width: min(1200px, calc(100% - 24px));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 64px;
}
.brand { color: #fff; display: flex; gap: 8px; align-items: center; text-decoration: none; font-weight: 800; }
.brand svg { width: 24px; height: 24px; }
.nav { display: flex; gap: 6px; background: #095c5f; padding: 4px; border-radius: 999px; }
.nav a { color: #d7f6f6; text-decoration: none; padding: 8px 16px; border-radius: 999px; }
.nav a.is-current { background: #fff; color: var(--brand); }
.wrap { width: min(1200px, calc(100% - 24px)); margin: 0 auto; }
.hero { padding: 40px 0 10px; }
.hero-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 20px; align-items: stretch; }
.hero h1 { font-size: 32px; margin-top: 0; }
.dl-panel {
  background: var(--paper);
  border-radius: 20px;
  padding: 20px;
  box-shadow: 0 10px 30px rgba(13, 115, 119, 0.12);
}
.cta-row, .platform-grid { display: grid; gap: 10px; }
.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--hi);
  color: #fff;
  text-decoration: none;
  border-radius: 12px;
  padding: 12px;
  font-weight: 700;
}
.btn-mac { background: #115e59; }
.btn-ios { background: #134e4a; }
.btn-and { background: #3f6212; }
section { padding: 28px 0; }
.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.card, .review, .news-item, .faq-item {
  background: var(--paper);
  border-radius: 16px;
  padding: 16px;
  border: 1px solid var(--line);
}
table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 16px; overflow: hidden; }
th, td { padding: 10px; border-bottom: 1px solid var(--line); text-align: left; }
th { background: #d7f3f3; }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.step { background: #fff; border-radius: 16px; padding: 14px; }
.step b { display: inline-block; background: var(--brand); color: #fff; border-radius: 8px; padding: 2px 8px; }
.site-footer { background: #07393b; color: #cdeeee; padding: 28px 0; }
.foot-nav a { color: #9ee6e4; margin-right: 14px; }
@media (max-width: 900px) {
  .hero-grid, .cards-3, .steps { grid-template-columns: 1fr; }
  .nav { border-radius: 12px; flex-wrap: wrap; }
}