:root {
  --bg: #ffffff; --fg: #0f1419; --muted: #536471; --line: #e6eaed; --accent: #1d9bf0; --accent-fg: #ffffff;
  --card: #f7f9fa; --shadow: 0 1px 2px rgb(15 20 25 / .06), 0 24px 60px -20px rgb(15 20 25 / .25);
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) {
  --bg: #000000; --fg: #e7e9ea; --muted: #8b98a5; --line: #23272b; --accent: #1d9bf0; --accent-fg: #ffffff;
  --card: #0e1012; --shadow: 0 0 0 1px #23272b, 0 24px 60px -20px rgb(0 0 0 / .8);
  color-scheme: dark;
} }
:root[data-theme="dark"] {
  --bg: #000000; --fg: #e7e9ea; --muted: #8b98a5; --line: #23272b; --accent: #1d9bf0; --accent-fg: #ffffff;
  --card: #0e1012; --shadow: 0 0 0 1px #23272b, 0 24px 60px -20px rgb(0 0 0 / .8);
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
img { display: block; max-width: 100%; height: auto; }

.wrap { max-width: 1080px; margin: 0 auto; padding-inline: max(16px, env(safe-area-inset-left, 0px)) max(16px, env(safe-area-inset-right, 0px)); }

header.top { display: flex; align-items: center; justify-content: space-between; padding-block: 20px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; text-decoration: none; }
.brand img { width: 28px; height: 28px; border-radius: 7px; }
.top nav { display: flex; gap: 20px; font-size: 15px; }
.top nav a { color: var(--muted); text-decoration: none; transition: color .15s ease; }
@media (hover: hover) and (pointer: fine) { .top nav a:hover { color: var(--fg); } }

.hero { text-align: center; padding-block: 72px 48px; display: flex; flex-direction: column; align-items: center; gap: 20px; }
.hero .icon { width: 88px; height: 88px; border-radius: 22px; box-shadow: var(--shadow); }
h1 { margin: 0; font-size: clamp(40px, 7vw, 64px); line-height: 1.05; letter-spacing: -.025em; text-wrap: balance; }
.lede { margin: 0; max-width: 560px; color: var(--muted); font-size: clamp(18px, 2.4vw, 21px); text-wrap: balance; }
.cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 8px; }
.btn { display: inline-flex; align-items: center; gap: 8px; height: 46px; padding-inline: 22px; border-radius: 999px;
  font-size: 16px; font-weight: 600; text-decoration: none; transition: transform .12s cubic-bezier(.23, 1, .32, 1), background-color .15s ease; }
.btn:active { transform: scale(.97); }
.btn.primary { background: var(--fg); color: var(--bg); }
.btn.ghost { border: 1px solid var(--line); }
@media (hover: hover) and (pointer: fine) { .btn.ghost:hover { background: var(--card); } }
.btn svg { width: 18px; height: 18px; }

.shot { margin: 24px auto 0; max-width: 1000px; border-radius: 14px; overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--line); }

.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 40px 48px; padding-block: 112px 96px; }
.features h3 { margin: 0 0 6px; font-size: 18px; }
.features p { margin: 0; color: var(--muted); font-size: 16px; }
kbd { font: 600 .85em var(--sans); padding: 1px 6px; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px; color: var(--fg); }

.split { display: grid; grid-template-columns: 1fr 1.25fr; gap: 56px; align-items: center; padding-block: 48px 96px; border-top: 1px solid var(--line); }
.split h2 { margin: 0 0 12px; font-size: clamp(28px, 4vw, 36px); line-height: 1.15; letter-spacing: -.02em; text-wrap: balance; }
.split p { margin: 0 0 12px; color: var(--muted); }
.split .shot { margin: 0; }
@media (max-width: 760px) { .split { grid-template-columns: 1fr; gap: 32px; } }

.install { border-top: 1px solid var(--line); padding-block: 72px 96px; }
.install h2 { margin: 0 0 20px; font-size: clamp(28px, 4vw, 36px); letter-spacing: -.02em; }
.install ol { margin: 0; padding-left: 1.3em; display: flex; flex-direction: column; gap: 8px; color: var(--muted); }
.install ol strong { color: var(--fg); font-weight: 600; }
code { font-size: .88em; padding: 1px 6px; border-radius: 5px; background: var(--card); border: 1px solid var(--line); color: var(--fg); }

footer { border-top: 1px solid var(--line); padding-block: 28px 40px; color: var(--muted); font-size: 14px;
  display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
footer nav { display: flex; gap: 20px; }
footer a { text-decoration: none; }
@media (hover: hover) and (pointer: fine) { footer a:hover { color: var(--fg); } }

@media (max-width: 560px) {
  .hero { padding-block: 40px 32px; }
  .top nav .hide-sm { display: none; }
  .features { padding-block: 72px 64px; }
}