:root {
  color-scheme: dark;
  --bg: #1f282f;
  --bg-deep: #12191f;
  --surface: rgba(255, 255, 255, 0.06);
  --surface-strong: rgba(255, 255, 255, 0.1);
  --text: #ffffff;
  --muted: #b8c0cb;
  --soft: #d7dce3;
  --line: rgba(255, 255, 255, 0.13);
  --accent: #1187ff;
  --green: #35d46a;
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 14% 8%, rgba(17, 135, 255, 0.13), transparent 28rem),
    radial-gradient(circle at 88% 18%, rgba(53, 212, 106, 0.1), transparent 26rem),
    linear-gradient(180deg, var(--bg), var(--bg-deep));
  line-height: 1.55;
}

body[data-lang="en"] [data-lang-block="zh"],
body[data-lang="zh"] [data-lang-block="en"] {
  display: none !important;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(18, 25, 31, 0.74);
  backdrop-filter: blur(20px);
}

.nav {
  max-width: 1180px;
  min-height: 72px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.34);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--muted);
  font-size: 0.95rem;
}

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

.nav-links a:hover {
  color: var(--text);
}

.lang-switch {
  display: inline-grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
}

.lang-switch button {
  min-width: 42px;
  height: 32px;
  border: 0;
  border-radius: 999px;
  color: var(--muted);
  background: transparent;
  font: inherit;
  font-size: 0.88rem;
  cursor: pointer;
}

body[data-lang="en"] .lang-switch button[data-set-lang="en"],
body[data-lang="zh"] .lang-switch button[data-set-lang="zh"] {
  color: var(--text);
  background: rgba(255, 255, 255, 0.14);
}

.hero {
  max-width: 1180px;
  min-height: calc(100vh - 72px);
  margin: 0 auto;
  padding: 72px 24px 84px;
  display: grid;
  grid-template-columns: minmax(0, 0.98fr) minmax(320px, 0.72fr);
  align-items: center;
  gap: 56px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--green);
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  font-size: clamp(3.1rem, 8vw, 7.4rem);
  line-height: 0.9;
}

body[data-lang="zh"] h1 {
  max-width: 860px;
  font-size: clamp(3rem, 7.2vw, 6.6rem);
  line-height: 1.04;
}

h2 {
  font-size: clamp(2.1rem, 5vw, 4.7rem);
  line-height: 0.98;
}

.hero-copy {
  max-width: 680px;
  margin: 28px 0 0;
  color: var(--soft);
  font-size: clamp(1.15rem, 2vw, 1.45rem);
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 34px;
}

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

.button.primary {
  color: #ffffff;
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 18px 46px rgba(17, 135, 255, 0.28);
}

.button.secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.hero-media {
  position: relative;
  min-height: 680px;
  display: grid;
  place-items: center;
}

.hero-media::before {
  content: "";
  position: absolute;
  inset: 8% -8% 4% 8%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(17, 135, 255, 0.28), transparent 62%);
  filter: blur(28px);
}

.hero-shot {
  position: relative;
  width: min(430px, 100%);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.pill {
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.06);
  font-size: 0.94rem;
}

.section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 94px 24px;
}

.section-header {
  max-width: 820px;
  margin-bottom: 34px;
}

.section-header p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.15rem;
}

.showcase {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(340px, 0.75fr);
  grid-auto-rows: 360px;
  gap: 18px;
  align-items: stretch;
}

.showcase-card {
  position: relative;
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background:
    radial-gradient(circle at 50% 16%, rgba(255, 255, 255, 0.08), transparent 28rem),
    rgba(255, 255, 255, 0.05);
}

.showcase-card.featured {
  grid-row: span 3;
  min-height: 1110px;
}

.showcase-card.compact {
  min-height: 360px;
}

.showcase-card img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center bottom;
  display: block;
  opacity: 0.96;
  padding: 22px 18px 0;
}

.showcase-card .caption {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(11, 16, 20, 0.68);
  backdrop-filter: blur(18px);
}

.showcase-card.featured .caption {
  left: 24px;
  right: 24px;
  bottom: 24px;
}

.showcase-card.compact .caption {
  left: 14px;
  right: 14px;
  bottom: 14px;
  padding: 13px 14px;
}

.caption h3 {
  margin: 0 0 5px;
  font-size: 1.08rem;
}

.caption p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.feature-grid,
.plans {
  display: grid;
  gap: 16px;
}

.feature-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card,
.plan-card,
.policy-card {
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 24px;
  background: var(--surface);
}

.feature-card h3,
.plan-card h3,
.policy-card h2,
.policy-card h3 {
  margin: 0 0 10px;
}

.feature-card p,
.plan-card p,
.policy-card p {
  margin: 0;
  color: var(--muted);
}

.feature-no {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  border-radius: 12px;
  color: #00140b;
  background: var(--green);
  font-weight: 900;
}

.plans {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.plan-card.pro {
  background: linear-gradient(145deg, rgba(17, 135, 255, 0.2), rgba(255, 255, 255, 0.06));
  border-color: rgba(17, 135, 255, 0.38);
}

.plan-card ul,
.policy-card ul {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.plan-card li,
.policy-card li {
  position: relative;
  margin: 11px 0;
  padding-left: 24px;
  color: var(--soft);
}

.plan-card li::before,
.policy-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--green);
}

.page {
  max-width: 980px;
  margin: 0 auto;
  padding: 70px 24px 96px;
}

.page-title {
  margin-bottom: 28px;
}

.page-title h1 {
  font-size: clamp(2.5rem, 7vw, 5rem);
}

.policy-card {
  padding: 32px;
}

.policy-card + .policy-card {
  margin-top: 24px;
}

.policy-card section + section {
  border-top: 1px solid var(--line);
  margin-top: 32px;
  padding-top: 28px;
}

.site-footer {
  border-top: 1px solid var(--line);
}

.footer-inner {
  max-width: 1180px;
  min-height: 86px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  color: var(--muted);
  flex-wrap: wrap;
}

.footer-inner a {
  color: var(--muted);
  text-decoration: none;
}

.footer-inner a:hover {
  color: var(--text);
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 54px;
  }

  .hero-media {
    min-height: auto;
  }

  .hero-shot {
    width: min(520px, 92vw);
  }

  .showcase {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-rows: auto;
  }

  .showcase-card.featured,
  .showcase-card.compact {
    min-height: 620px;
  }

  .showcase-card.featured {
    grid-row: auto;
  }

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

@media (max-width: 680px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .nav-actions,
  .nav-links {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
  }

  .hero,
  .section,
  .page {
    padding-left: 18px;
    padding-right: 18px;
  }

  .showcase {
    grid-template-columns: 1fr;
  }

  .showcase-card.featured,
  .showcase-card.compact {
    min-height: 560px;
  }

  .policy-card {
    padding: 22px;
  }
}