:root {
  --bg: #07111f;
  --bg-soft: #0d1b2f;
  --panel: rgba(15, 28, 48, 0.86);
  --panel-border: rgba(144, 180, 255, 0.18);
  --text: #e9f0ff;
  --text-soft: #adc0e1;
  --primary: #4e8cff;
  --primary-strong: #6ea3ff;
  --accent: #5eead4;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.32);
  --radius: 20px;
  --container: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(78, 140, 255, 0.22), transparent 34%),
    radial-gradient(circle at top right, rgba(94, 234, 212, 0.14), transparent 26%),
    linear-gradient(180deg, #050c16 0%, #09111d 50%, #08101c 100%);
}

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

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

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.2;
}

.container {
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: rgba(5, 12, 22, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-inner,
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.header-inner {
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), #7cb1ff);
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow: 0 14px 30px rgba(78, 140, 255, 0.35);
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-text strong {
  font-size: 1rem;
}

.brand-text small {
  color: var(--text-soft);
  font-size: 0.78rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--text-soft);
  font-size: 0.95rem;
}

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

.hero {
  padding: 84px 0 56px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 36px;
  align-items: center;
}

.eyebrow,
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(94, 234, 212, 0.1);
  color: var(--accent);
  font-size: 0.86rem;
  letter-spacing: 0.03em;
}

.hero-copy h1 {
  margin-top: 18px;
  font-size: clamp(2.4rem, 5vw, 4.4rem);
  letter-spacing: -0.03em;
}

.hero-lead {
  margin-top: 18px;
  max-width: 680px;
  font-size: 1.06rem;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: #fff;
  box-shadow: 0 18px 32px rgba(78, 140, 255, 0.25);
}

.button-secondary {
  border-color: rgba(144, 180, 255, 0.24);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.hero-points {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.hero-points li {
  position: relative;
  padding-left: 24px;
  color: var(--text-soft);
}

.hero-points li::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--primary));
}

.hero-panel {
  display: grid;
  gap: 18px;
}

.stat-card,
.feature-card,
.scene-item,
.faq-item,
.screenshot-card,
.cta-box {
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.feature-card,
.scene-item,
.faq-item,
.screenshot-card {
  padding: 24px;
}

.hero-highlights {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.highlight-card {
  padding: 20px;
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  box-shadow: var(--shadow);
}

.highlight-card strong {
  display: block;
  font-size: 1rem;
}

.highlight-card p {
  margin-top: 10px;
}

.stat-label {
  color: var(--accent);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.section {
  padding: 56px 0;
}

.section-muted {
  background: rgba(255, 255, 255, 0.02);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 30px;
}

.section-heading h2 {
  margin-top: 16px;
  font-size: clamp(1.8rem, 3.5vw, 3rem);
}

.section-heading p {
  margin-top: 12px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.feature-card h3,
.scene-item h3,
.step h3,
.faq-item h3 {
  font-size: 1.12rem;
}

.feature-card p,
.scene-item p,
.step p,
.faq-item p {
  margin-top: 12px;
}

.scene-list,
.faq-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

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

.screenshot-toolbar {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-bottom: 18px;
}

.screenshot-nav {
  min-height: 42px;
  padding: 0 18px;
  border: 1px solid rgba(144, 180, 255, 0.24);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font: inherit;
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.screenshot-nav:hover {
  transform: translateY(-1px);
  border-color: rgba(144, 180, 255, 0.4);
}

.screenshot-carousel {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(84%, 1fr);
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding-bottom: 8px;
}

.screenshot-carousel::-webkit-scrollbar {
  height: 8px;
}

.screenshot-carousel::-webkit-scrollbar-thumb {
  background: rgba(144, 180, 255, 0.24);
  border-radius: 999px;
}

.screenshot-card {
  overflow: hidden;
  scroll-snap-align: start;
}

.screenshot-head {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.screenshot-head strong {
  font-size: 1.1rem;
}

.screenshot-card img {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 18px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.02);
}

.section-cta {
  padding-top: 26px;
}

.cta-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 34px;
  background:
    linear-gradient(135deg, rgba(78, 140, 255, 0.2), rgba(94, 234, 212, 0.1)),
    var(--panel);
}

.cta-box h2 {
  margin-top: 14px;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
}

.cta-box p {
  margin-top: 12px;
  max-width: 720px;
}

.site-footer {
  padding: 20px 0 36px;
}

.site-footer p,
.site-footer a {
  color: var(--text-soft);
  font-size: 0.92rem;
}

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

@media (max-width: 1080px) {
  .card-grid,
  .scene-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-grid,
  .cta-box {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: flex-start;
  }
}

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

  .header-inner,
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 0;
  }

  .site-nav {
    gap: 12px;
    font-size: 0.9rem;
  }

  .hero {
    padding-top: 56px;
  }

  .card-grid,
  .scene-list,
  .faq-list,
  .hero-highlights {
    grid-template-columns: 1fr;
  }

  .screenshot-carousel {
    grid-auto-columns: 100%;
  }

  .hero-copy h1 {
    font-size: 2.2rem;
  }

  .cta-box,
  .feature-card,
  .scene-item,
  .faq-item,
  .screenshot-card {
    padding: 20px;
  }

  .button {
    width: 100%;
  }

  .hero-actions,
  .cta-actions {
    width: 100%;
  }
}