:root {
  color-scheme: dark;
  --bg: #0b0c0f;
  --bg-soft: #121419;
  --panel: rgba(255, 255, 255, 0.08);
  --panel-strong: rgba(255, 255, 255, 0.13);
  --line: rgba(255, 255, 255, 0.13);
  --line-strong: rgba(255, 255, 255, 0.22);
  --text: rgba(255, 255, 255, 0.94);
  --text-soft: rgba(255, 255, 255, 0.68);
  --muted: rgba(255, 255, 255, 0.48);
  --red: #ff4037;
  --orange: #e67632;
  --moss: #aab68b;
  --shadow: 0 32px 90px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  color: var(--text);
  font-family: Inter, "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 82% 8%, rgba(255, 64, 55, 0.18), transparent 32rem),
    radial-gradient(circle at 8% 72%, rgba(170, 182, 139, 0.12), transparent 28rem),
    linear-gradient(180deg, #090a0d, #151217 46%, #090a0d);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(255, 255, 255, 0.11) 0.6px, transparent 0.6px);
  background-size: 7px 7px;
  opacity: 0.16;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  min-height: 4.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem max(1rem, calc((100vw - 1160px) / 2));
  background: rgba(11, 12, 15, 0.78);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(20px);
}

.site-header.solid {
  background: rgba(11, 12, 15, 0.92);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.72rem;
  color: var(--text);
  font-size: 1.02rem;
  font-weight: 800;
}

.brand-mark {
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 36% 64% 58% 42%;
  background: linear-gradient(135deg, var(--red), var(--orange) 46%, var(--moss));
  box-shadow: 0 0 24px rgba(255, 64, 55, 0.35);
}

nav {
  display: inline-flex;
  align-items: center;
  gap: 1.15rem;
  color: var(--text-soft);
  font-size: 0.92rem;
  font-weight: 650;
}

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

.hero,
.intro-band,
.feature-grid,
.mood-band,
.privacy-band,
.closing-cta,
.policy-shell,
footer {
  width: min(1160px, calc(100% - 2rem));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 2.4rem;
  align-items: center;
  min-height: calc(100svh - 4.5rem);
  padding: 5rem 0 4.5rem;
}

.hero-copy {
  position: relative;
  z-index: 1;
}

.eyebrow,
.section-kicker,
.feature-label {
  margin: 0 0 1rem;
  color: var(--moss);
  font-size: 0.74rem;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--text);
  font-weight: 760;
  letter-spacing: 0;
}

h1 {
  max-width: 680px;
  font-size: clamp(3.35rem, 7.2vw, 6.5rem);
  line-height: 0.93;
  text-wrap: balance;
}

h2 {
  font-size: clamp(2.1rem, 4.6vw, 4.2rem);
  line-height: 1.02;
  text-wrap: balance;
}

h3 {
  font-size: 1.42rem;
  line-height: 1.18;
}

p {
  margin: 0;
  color: var(--text-soft);
  line-height: 1.75;
}

.lead {
  max-width: 620px;
  margin-top: 1.35rem;
  color: rgba(255, 255, 255, 0.74);
  font-size: 1.08rem;
}

.signal-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.55rem;
}

.signal-list span {
  padding: 0.56rem 0.78rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-soft);
  background: rgba(255, 255, 255, 0.055);
  font-size: 0.88rem;
  font-weight: 720;
}

.hero-actions,
.closing-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem;
}

.hero-actions {
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 2.95rem;
  align-items: center;
  justify-content: center;
  padding: 0 1.14rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.075);
  font-weight: 760;
  transition: transform 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.button.primary {
  border-color: rgba(255, 64, 55, 0.58);
  background: linear-gradient(135deg, var(--red), var(--orange));
}

.button:hover {
  transform: translateY(-1px);
  border-color: var(--line-strong);
}

.hero-media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 26px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.06);
  box-shadow: var(--shadow);
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.intro-band,
.mood-band,
.privacy-band {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
  padding: 4.2rem 0;
  border-top: 1px solid var(--line);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.95rem;
  padding: 0 0 4.5rem;
}

.feature-grid article {
  min-height: 18rem;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  backdrop-filter: blur(18px);
}

.feature-grid h3 {
  margin-bottom: 0.8rem;
}

.feature-grid p {
  font-size: 0.96rem;
}

.mood-band,
.privacy-band {
  border-radius: 28px;
  border: 1px solid var(--line);
  padding: 3rem;
  margin-bottom: 1rem;
  background: var(--panel);
  backdrop-filter: blur(20px);
}

.closing-cta {
  flex-direction: column;
  align-items: flex-start;
  padding: 5rem 0 5.5rem;
}

.closing-cta p {
  max-width: 620px;
}

footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.4rem 0 2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
}

.policy-page {
  background:
    radial-gradient(circle at 80% 0%, rgba(255, 64, 55, 0.14), transparent 30rem),
    var(--bg);
}

.policy-shell {
  max-width: 780px;
  padding: 4.2rem 0 5rem;
}

.policy-shell h1 {
  font-size: clamp(2.7rem, 7vw, 5.4rem);
}

.updated {
  margin-top: 1rem;
  color: var(--muted);
}

.policy-shell section {
  padding: 2rem 0;
  border-bottom: 1px solid var(--line);
}

.policy-shell h2 {
  margin-bottom: 0.8rem;
  font-size: 1.5rem;
}

.policy-shell a {
  color: var(--moss);
  text-decoration: underline;
  text-underline-offset: 0.22em;
}

@media (max-width: 860px) {
  .site-header {
    min-height: 4.1rem;
  }

  .hero {
    display: flex;
    min-height: auto;
    flex-direction: column;
    align-items: stretch;
    padding: 3.5rem 0 3.2rem;
  }

  .hero-media {
    order: -1;
    border-radius: 20px;
  }

  .intro-band,
  .mood-band,
  .privacy-band {
    grid-template-columns: 1fr;
    padding: 2.6rem 0;
  }

  .mood-band,
  .privacy-band {
    padding: 1.35rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    padding-bottom: 3rem;
  }

  .feature-grid article {
    min-height: auto;
  }
}