:root {
  color-scheme: dark;
  --bg: #061816;
  --bg-2: #0a2a28;
  --panel: rgba(11, 43, 40, 0.72);
  --panel-2: rgba(18, 59, 84, 0.54);
  --text: #f1fbf6;
  --muted: #a8c3c1;
  --line: rgba(209, 255, 232, 0.14);
  --green: #29d84b;
  --blue: #168cff;
  --red: #ff4038;
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.42);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 12% 16%, rgba(42, 216, 75, 0.22), transparent 24rem),
    radial-gradient(circle at 86% 8%, rgba(22, 140, 255, 0.26), transparent 26rem),
    linear-gradient(135deg, #0a3028, #071b22 44%, #10275e);
  color: var(--text);
  min-height: 100vh;
}

a {
  color: inherit;
}

.nav {
  width: min(1120px, calc(100% - 32px));
  margin: 22px auto 0;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(5, 17, 20, 0.55);
  backdrop-filter: blur(24px);
  position: sticky;
  top: 14px;
  z-index: 5;
}

.brand,
.nav-links,
.cta-row,
footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
}

.nav-links {
  gap: 18px;
  font-size: 14px;
  color: var(--muted);
}

.nav-links a {
  text-decoration: none;
}

.small-button {
  color: var(--text) !important;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 13px;
  background: rgba(255, 255, 255, 0.06);
}

main {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 42px;
  align-items: center;
  padding: 84px 0 52px;
}

.hero-icon {
  width: 112px;
  height: 112px;
  border-radius: 26px;
  box-shadow: 0 24px 72px rgba(0, 0, 0, 0.34);
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  margin-top: 22px;
  font-size: clamp(48px, 7vw, 82px);
  line-height: 0.93;
  letter-spacing: 0;
}

h1.zh-title {
  font-size: clamp(42px, 5.6vw, 70px);
  line-height: 1.05;
}

h2 {
  font-size: clamp(34px, 4vw, 56px);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  font-size: 22px;
  margin: 18px 0 10px;
}

.lead {
  margin-top: 24px;
  font-size: 20px;
  line-height: 1.6;
  color: var(--muted);
}

.lead.zh {
  margin-top: 10px;
  font-size: 17px;
}

.cta-row {
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 800;
  text-decoration: none;
  border: 1px solid transparent;
}

.button.primary {
  background: linear-gradient(135deg, var(--green), #62ff86);
  color: #052016;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.07);
  border-color: var(--line);
}

.note {
  margin-top: 18px;
  color: rgba(235, 255, 250, 0.58);
  font-size: 14px;
}

.hero-shot {
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 14px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.025));
  box-shadow: var(--shadow);
}

.hero-shot img {
  width: 100%;
  display: block;
  border-radius: 18px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 10px 0 72px;
}

.stats div,
.grid article,
.privacy-card,
.installer-frame,
pre {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  backdrop-filter: blur(18px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.18);
}

.stats div {
  padding: 22px;
}

.stats strong {
  display: block;
  font-size: 30px;
  color: #fff;
}

.stats span,
.section-head p,
.grid p,
.split p,
.privacy-card span,
footer p {
  color: var(--muted);
  line-height: 1.65;
}

.section,
.split {
  margin: 74px 0;
}

.section-head {
  max-width: 740px;
  margin-bottom: 26px;
}

.eyebrow {
  color: var(--green) !important;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 13px;
}

.section-head p,
.split p {
  margin-top: 18px;
  font-size: 18px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.grid article {
  padding: 24px;
}

.glyph {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 13px;
  background: rgba(41, 216, 75, 0.13);
  color: var(--green);
  font-size: 24px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 38px;
  align-items: center;
}

.reverse {
  grid-template-columns: 1.16fr 0.84fr;
}

.privacy-card {
  padding: 10px 24px;
}

.privacy-card div {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.privacy-card div:last-child {
  border-bottom: 0;
}

.privacy-card strong {
  text-align: right;
}

.installer-frame {
  padding: 12px;
}

.installer-frame img {
  display: block;
  width: 100%;
  border-radius: 14px;
}

pre {
  margin: 0;
  padding: 24px;
  overflow: auto;
}

code {
  font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  color: #dfffe8;
  line-height: 1.7;
}

footer {
  width: min(1120px, calc(100% - 32px));
  margin: 90px auto 34px;
  gap: 16px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  padding-top: 28px;
}

footer img {
  width: 52px;
  height: 52px;
  border-radius: 14px;
}

footer strong {
  color: var(--text);
}

@media (max-width: 900px) {
  .nav,
  .nav-links,
  .hero,
  .split,
  .reverse {
    display: block;
  }

  .nav-links {
    margin-top: 14px;
  }

  .nav-links a {
    display: inline-block;
    margin: 7px 12px 7px 0;
  }

  .hero {
    padding-top: 54px;
  }

  .hero-shot {
    margin-top: 34px;
  }

  .stats,
  .grid {
    grid-template-columns: 1fr;
  }

  .split > * + * {
    margin-top: 24px;
  }
}