:root {
  --bg: #05040b;
  --panel: rgba(15, 15, 28, 0.74);
  --panel-strong: rgba(255, 255, 255, 0.1);
  --text: #f7f1ff;
  --muted: rgba(247, 241, 255, 0.68);
  --line: rgba(255, 255, 255, 0.16);
  --cyan: #47e7ff;
  --pink: #ff4eb8;
  --gold: #ffd36e;
  --radius: 28px;
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 18% 12%, rgba(255, 78, 184, 0.18), transparent 28rem),
    radial-gradient(circle at 80% 8%, rgba(71, 231, 255, 0.16), transparent 26rem),
    linear-gradient(180deg, #090618 0%, #05040b 42%, #080611 100%);
  letter-spacing: 0;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  opacity: 0.14;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, black, transparent 72%);
}

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

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

.site-header {
  position: fixed;
  top: 18px;
  left: 50%;
  z-index: 20;
  display: flex;
  width: min(1120px, calc(100% - 32px));
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(5, 4, 11, 0.56);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  transform: translateX(-50%);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 10px;
}

.site-header nav {
  display: flex;
  gap: 4px;
}

.site-header nav a {
  padding: 9px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
}

.site-header nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  overflow: hidden;
  align-items: end;
  padding: 130px max(24px, calc((100vw - 1120px) / 2)) 64px;
}

.hero-bg,
.hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-bg {
  object-fit: cover;
  filter: saturate(1.16) contrast(1.04);
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(5, 4, 11, 0.98) 0%, rgba(5, 4, 11, 0.68) 38%, rgba(5, 4, 11, 0.08) 100%),
    linear-gradient(0deg, #05040b 0%, rgba(5, 4, 11, 0) 34%);
}

.hero-content {
  position: relative;
  width: min(690px, 100%);
  animation: rise 720ms ease-out both;
}

.eyebrow,
.section-heading p,
.creator-copy > p:first-child {
  margin: 0 0 16px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(56px, 10vw, 132px);
  line-height: 0.92;
}

.hero-copy {
  max-width: 620px;
  color: rgba(247, 241, 255, 0.84);
  font-size: clamp(18px, 2.3vw, 26px);
  line-height: 1.7;
}

.hero-actions,
.download {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.primary-action,
.secondary-action {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-weight: 800;
}

.primary-action {
  padding: 0 24px;
  color: #090611;
  background: linear-gradient(135deg, var(--cyan), var(--pink) 68%, var(--gold));
}

.secondary-action {
  padding: 0 22px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.08);
}

.hero-panel {
  position: absolute;
  right: max(24px, calc((100vw - 1120px) / 2));
  bottom: 68px;
  display: grid;
  width: 220px;
  gap: 8px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(5, 4, 11, 0.44);
  backdrop-filter: blur(18px);
}

.hero-panel span {
  color: var(--muted);
  font-size: 13px;
}

.hero-panel strong {
  font-size: 42px;
  line-height: 1;
}

.section,
.creator-band,
.download,
footer {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.section {
  padding: 92px 0 48px;
}

.section-heading {
  display: grid;
  grid-template-columns: 0.9fr 1.6fr;
  gap: 48px;
  align-items: end;
  margin-bottom: 30px;
}

.section-heading h2,
.creator-copy h2,
.download h2 {
  margin-bottom: 14px;
  font-size: clamp(30px, 4.4vw, 58px);
  line-height: 1.08;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
}

.feature-card {
  overflow: hidden;
  min-height: 310px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.feature-card.large {
  grid-row: span 2;
}

.feature-card img {
  width: 100%;
  height: 210px;
  object-fit: cover;
  border-radius: 18px;
}

.feature-card.large img {
  height: 430px;
}

.feature-card h3 {
  margin: 18px 0 8px;
  font-size: 24px;
}

.feature-card p,
.creator-copy p,
.download p {
  color: var(--muted);
  line-height: 1.8;
}

.creator-band {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  align-items: stretch;
  margin-top: 50px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 34px;
  background:
    linear-gradient(135deg, rgba(255, 78, 184, 0.18), transparent 48%),
    rgba(255, 255, 255, 0.06);
}

.creator-board {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.creator-board div {
  min-height: 132px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.07);
}

.creator-board span {
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
}

.creator-board strong {
  display: block;
  margin-top: 36px;
  font-size: 22px;
}

.download {
  margin-top: 64px;
  justify-content: space-between;
  margin-bottom: 54px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.08);
}

.download img {
  width: 76px;
  height: 76px;
  border-radius: 22px;
}

.download div {
  flex: 1;
  min-width: 230px;
}

footer {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 0 0 36px;
  color: rgba(247, 241, 255, 0.52);
  font-size: 13px;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 760px) {
  .site-header {
    top: 10px;
  }

  .site-header nav a {
    padding: 9px 9px;
    font-size: 13px;
  }

  .hero {
    min-height: 88vh;
    padding-bottom: 92px;
  }

  .hero-panel {
    left: 24px;
    right: 24px;
    bottom: 24px;
    width: auto;
  }

  .section-heading,
  .feature-grid,
  .creator-band {
    grid-template-columns: 1fr;
  }

  .download {
    align-items: flex-start;
    flex-direction: column;
  }

  .feature-card.large img {
    height: 260px;
  }

  .creator-board {
    grid-template-columns: 1fr;
  }
}