:root {
  --brand: #14AD82;
  --brand-press: #0F9670;
  --brand-hover: #1CC494;
  --brand-on: #FFFFFF;
  --bg: #ffffff;
  --bg-soft: #f4f7f6;
  --surface: #ffffff;
  --text: #11201b;
  --text-dim: #5b6b65;
  --border: rgba(20,173,130,.18);
  --shadow: 0 8px 30px rgba(17,32,27,.08);
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root[data-theme="system"] {
    --bg: #0c1411; --bg-soft: #0f1a16; --surface: #11201b;
    --text: #e7f1ec; --text-dim: #9fb3ab; --border: rgba(28,196,148,.20);
    --shadow: 0 8px 30px rgba(0,0,0,.45);
  }
}
:root[data-theme="dark"] {
  --bg: #0c1411; --bg-soft: #0f1a16; --surface: #11201b;
  --text: #e7f1ec; --text-dim: #9fb3ab; --border: rgba(28,196,148,.20);
  --shadow: 0 8px 30px rgba(0,0,0,.45);
}
:root[data-theme="light"] {
  --bg: #ffffff; --bg-soft: #f4f7f6; --surface: #ffffff;
  --text: #11201b; --text-dim: #5b6b65; --border: rgba(20,173,130,.18);
  --shadow: 0 8px 30px rgba(17,32,27,.08);
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }

/* nav */
.nav { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 86%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
.nav-inner { max-width: 1080px; margin: 0 auto; padding: 12px 20px; display: flex; align-items: center; gap: 18px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; }
.brand-logo { width: 30px; height: 30px; border-radius: 8px; }
.brand-name { font-size: 18px; color: var(--brand); }
.brand-sub { font-size: 12px; color: var(--text-dim); font-weight: 600; border-left: 1px solid var(--border); padding-left: 10px; }
.nav-links { display: flex; gap: 18px; margin-left: auto; font-size: 14px; color: var(--text-dim); }
.nav-links a:hover { color: var(--brand); }
.nav-tools { display: flex; gap: 8px; }
.sel { background: var(--surface); color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: 6px 8px; font-size: 13px; }

/* hero */
.hero { background: radial-gradient(1200px 500px at 50% -10%, color-mix(in srgb, var(--brand) 14%, transparent), transparent); }
.hero-inner { max-width: 880px; margin: 0 auto; padding: 70px 20px 50px; text-align: center; }
.badge-pill { display: inline-block; padding: 5px 14px; border: 1px solid var(--border); border-radius: 999px; font-size: 13px; color: var(--brand); background: color-mix(in srgb, var(--brand) 8%, transparent); }
.hero-title { font-size: 44px; line-height: 1.2; margin: 18px 0 10px; }
.hero-sub { color: var(--text-dim); font-size: 17px; max-width: 640px; margin: 0 auto 26px; }
.install-box { display: inline-flex; align-items: center; gap: 8px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 8px 8px 8px 16px; box-shadow: var(--shadow); }
.install-cmd { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 14px; color: var(--text); }
.copy-btn { background: var(--brand); color: var(--brand-on); border: 0; border-radius: 9px; padding: 8px 14px; font-size: 13px; font-weight: 700; cursor: pointer; }
.copy-btn:hover { background: var(--brand-hover); }
.hero-cta { margin: 22px 0 30px; display: flex; gap: 12px; justify-content: center; }
.btn { padding: 11px 20px; border-radius: 10px; font-weight: 700; font-size: 14px; border: 1px solid var(--border); }
.btn-primary { background: var(--brand); color: var(--brand-on); border-color: var(--brand); }
.btn-primary:hover { background: var(--brand-hover); }
.btn-ghost { background: transparent; color: var(--text); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.hero-stats { list-style: none; display: flex; gap: 26px; justify-content: center; padding: 0; margin: 10px 0 0; flex-wrap: wrap; }
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats b { font-size: 22px; color: var(--brand); }
.hero-stats span { font-size: 12px; color: var(--text-dim); }

/* sections */
.section-title { text-align: center; font-size: 28px; margin: 0 0 30px; }
.features, .why, .download { max-width: 1080px; margin: 0 auto; padding: 60px 20px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.card-ico { font-size: 26px; color: var(--brand); }
.card h3 { margin: 12px 0 8px; font-size: 17px; }
.card p { color: var(--text-dim); font-size: 14px; margin: 0; }

/* compare */
.compare table { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.compare th, .compare td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--border); font-size: 14px; }
.compare thead th { background: color-mix(in srgb, var(--brand) 10%, transparent); color: var(--brand); }
.compare td:first-child { color: var(--text-dim); }

/* download */
.download-hint { text-align: center; color: var(--text-dim); font-size: 14px; margin: -16px 0 26px; }
.dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.dl-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.dl-card h3 { color: var(--brand); margin: 0 0 12px; }
.dl-card ul { list-style: none; padding: 0; margin: 0; }
.dl-card li { padding: 7px 0; border-bottom: 1px dashed var(--border); }
.dl-card a:hover { color: var(--brand); }
.dl-note { font-size: 12px; color: var(--text-dim); margin: 12px 0 0; }

/* footer */
.foot { border-top: 1px solid var(--border); background: var(--bg-soft); }
.foot-inner { max-width: 1080px; margin: 0 auto; padding: 22px 20px; display: flex; justify-content: space-between; font-size: 13px; color: var(--text-dim); }

@media (max-width: 760px) {
  .grid, .dl-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 32px; }
  .nav-links { display: none; }
}