:root {
  --bg: #fbfbfd;
  --text: #1d1d1f;
  --dim: #6e6e73;
  --faint: #86868b;
  --card: #ffffff;
  --line: rgba(0, 0, 0, 0.08);
  --button: #1d1d1f;
  --button-text: #ffffff;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans", "Apple SD Gothic Neo", "Helvetica Neue", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --text: #f5f5f7;
    --dim: #a1a1a6;
    --faint: #86868b;
    --card: #1c1c1e;
    --line: rgba(255, 255, 255, 0.12);
    --button: #f5f5f7;
    --button-text: #1d1d1f;
  }
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.shell { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 22px; }

nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
}
nav .shell { height: 52px; display: flex; align-items: center; justify-content: space-between; }
.brand { font-weight: 600; font-size: 15px; letter-spacing: -0.01em; }
.lang {
  appearance: none; -webkit-appearance: none;
  font: inherit; font-size: 13px; color: var(--dim);
  background: transparent; border: 1px solid var(--line); border-radius: 999px;
  padding: 5px 12px; cursor: pointer;
}

.hero { text-align: center; padding: 72px 0 28px; }
.hero .icon { width: 128px; height: 128px; display: block; margin: 0 auto 18px; }
.hero h1 { font-size: clamp(40px, 7vw, 56px); font-weight: 700; letter-spacing: -0.03em; line-height: 1.05; }
.hero .tagline { font-size: clamp(21px, 3.2vw, 28px); font-weight: 600; letter-spacing: -0.015em; margin-top: 10px; }
.hero .lede { color: var(--dim); max-width: 640px; margin: 14px auto 0; font-size: 19px; }
.cta { margin-top: 30px; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.download {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--button); color: var(--button-text);
  font-size: 19px; font-weight: 600; letter-spacing: -0.01em;
  padding: 15px 30px; border-radius: 999px;
  transition: transform 0.12s ease, opacity 0.15s ease;
}
.download:hover { opacity: 0.88; }
.download:active { transform: scale(0.98); }
.download svg { width: 20px; height: 20px; }
.fine { color: var(--faint); font-size: 14px; }

.shot { margin: 44px auto 0; max-width: 1080px; }
.shot img { width: 100%; height: auto; display: block; }
.shot video { width: 100%; aspect-ratio: 1920 / 924; display: block;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 3%, #000 97%, transparent), linear-gradient(transparent, #000 3%, #000 97%, transparent);
  -webkit-mask-composite: source-in; mask-image: linear-gradient(to right, transparent, #000 3%, #000 97%, transparent), linear-gradient(transparent, #000 3%, #000 97%, transparent);
  mask-composite: intersect; }

.features {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
  padding: 72px 0 24px;
}
@media (max-width: 760px) { .features { grid-template-columns: 1fr; } }
.feature h3 { font-size: 19px; font-weight: 600; letter-spacing: -0.01em; }
.feature p { color: var(--dim); font-size: 16px; margin-top: 6px; }
.requires { color: var(--faint); font-size: 14px; text-align: center; padding: 28px 0 8px; }
.requires a { text-decoration: underline; text-underline-offset: 3px; }

.more { border-top: 1px solid var(--line); margin-top: 56px; padding: 48px 0 12px; }
.more h2 { font-size: 22px; font-weight: 600; letter-spacing: -0.015em; text-align: center; margin-bottom: 22px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.app-card {
  display: flex; align-items: center; gap: 16px;
  background: var(--card); border: 1px solid var(--line); border-radius: 18px;
  padding: 16px 18px; transition: transform 0.15s ease, border-color 0.15s ease;
}
.app-card:hover { transform: translateY(-2px); }
.app-card img { width: 64px; height: 64px; flex-shrink: 0; }
.app-card h3 { font-size: 18px; font-weight: 600; }
.app-card p { color: var(--dim); font-size: 15px; line-height: 1.4; margin-top: 2px; }

.home { text-align: center; padding: 88px 0 40px; }
.home h1 { font-size: clamp(38px, 6vw, 56px); font-weight: 700; letter-spacing: -0.03em; }
.home p { color: var(--dim); font-size: 21px; margin-top: 10px; }
.home-grid { padding-bottom: 40px; }

footer { color: var(--faint); font-size: 13px; text-align: center; padding: 48px 0 56px; }
footer a { text-decoration: underline; text-underline-offset: 3px; }