@font-face {
  font-family: 'SpaceGrotesk';
  src: url('fonts/SpaceGrotesk-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'SpaceGrotesk';
  src: url('fonts/SpaceGrotesk-Medium.ttf') format('truetype');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'SpaceGrotesk';
  src: url('fonts/SpaceGrotesk-Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #0b0a0f;
  --bg-top: #171226;
  --surface: #17151f;
  --surface-hi: #221e2e;
  --line: #2c2839;
  --fg: #f3f0ea;
  --muted: #8f8a9c;
  --accent: #d8ff4b;
  --accent-ink: #151807;
  --pink: #f0708c;
  --mint: #8fe3c0;
  --blue: #8ba8ff;
  --yellow: #f2d06b;
  --radius: 20px;
  --max: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(1000px 700px at 78% -10%, rgba(216, 255, 75, 0.07), transparent 60%),
    radial-gradient(900px 700px at 8% 8%, rgba(139, 168, 255, 0.08), transparent 55%),
    linear-gradient(180deg, var(--bg-top) 0%, var(--bg) 42%, #08070c 100%);
  color: var(--fg);
  font-family: 'SpaceGrotesk', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--accent);
  color: var(--accent-ink);
}

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 12px;
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

.skip:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px 32px;
  background: rgba(11, 10, 15, 0.62);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.mark {
  width: 32px;
  height: 32px;
  flex: none;
  filter: drop-shadow(0 0 14px rgba(216, 255, 75, 0.18));
}

.brand-name {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.brand-cn {
  padding-left: 10px;
  border-left: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.12em;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 12px;
  color: var(--muted);
}

.nav a {
  transition: color 160ms ease;
}

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 14px;
  border: 1px solid rgba(216, 255, 75, 0.4);
  border-radius: 999px;
  color: var(--accent) !important;
  white-space: nowrap;
}

.nav-cta:hover {
  background: rgba(216, 255, 75, 0.08);
}

main {
  display: block;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: clamp(36px, 6vw, 80px);
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(56px, 8vw, 104px) 32px clamp(56px, 7vw, 88px);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: '';
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 9px;
  border-radius: 50%;
  background: var(--accent);
  vertical-align: 1px;
}

h1 {
  margin: 0;
  font-size: clamp(3.1rem, 7.4vw, 5.8rem);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.055em;
}

h1 span {
  color: var(--accent);
  text-shadow: 0 0 34px rgba(216, 255, 75, 0.16);
}

.lede {
  max-width: 33em;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.75;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, border-color 180ms ease;
}

.btn.primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 10px 36px rgba(216, 255, 75, 0.16);
}

.btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 44px rgba(216, 255, 75, 0.24);
}

.btn.ghost {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.02);
  color: var(--fg);
}

.btn.ghost:hover {
  border-color: rgba(216, 255, 75, 0.35);
  background: rgba(216, 255, 75, 0.05);
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 38px 0 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.meta li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.meta li::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(216, 255, 75, 0.65);
}

.hero-art {
  position: relative;
  min-width: 0;
}

.hero-art::before {
  content: '';
  position: absolute;
  inset: 8% 4% 2%;
  border-radius: 40px;
  background: radial-gradient(circle at 55% 45%, rgba(216, 255, 75, 0.14), transparent 62%);
  filter: blur(26px);
  pointer-events: none;
}

.canvas-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 26px;
  background:
    linear-gradient(155deg, rgba(255, 255, 255, 0.035), transparent 42%),
    linear-gradient(180deg, #1a1528 0%, #121019 55%, #0d0c12 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    0 24px 90px rgba(0, 0, 0, 0.45);
}

#stage {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.canvas-caption {
  position: absolute;
  right: 18px;
  bottom: 15px;
  left: 18px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  pointer-events: none;
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(64px, 9vw, 108px) 32px;
}

.section-head {
  max-width: 760px;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(2rem, 4.4vw, 3.7rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.br-mobile {
  display: none;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 46px;
}

.card {
  display: flex;
  flex-direction: column;
  min-height: 230px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.028), rgba(255, 255, 255, 0.008));
  transition: transform 200ms ease, border-color 200ms ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(216, 255, 75, 0.28);
}

.card-no {
  margin: 0 0 auto;
  color: var(--accent);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.16em;
}

.card h3 {
  margin: 42px 0 10px;
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.card p:last-child,
.steps p {
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.75;
}

.how {
  padding-top: 20px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
  margin: 46px 0 0;
  padding: 0;
  list-style: none;
}

.steps li {
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.step-no {
  color: var(--accent);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.16em;
}

.steps h3 {
  margin: 16px 0 10px;
  font-size: clamp(1.5rem, 2.2vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.quote {
  max-width: 1040px;
  margin: 0 auto;
  padding: clamp(56px, 8vw, 100px) 32px;
  border-top: 1px solid var(--line);
}

.quote p {
  margin: 0;
  font-size: clamp(1.45rem, 3.2vw, 2.55rem);
  font-weight: 500;
  line-height: 1.38;
  letter-spacing: -0.035em;
  color: var(--fg);
}

.quote p::first-letter {
  color: var(--accent);
}

.final-cta {
  max-width: 1000px;
  margin: 0 auto clamp(60px, 9vw, 110px);
  padding: clamp(46px, 7vw, 74px) 28px;
  border: 1px solid rgba(216, 255, 75, 0.22);
  border-radius: 28px;
  background:
    radial-gradient(circle at 50% 0%, rgba(216, 255, 75, 0.13), transparent 58%),
    rgba(255, 255, 255, 0.012);
  text-align: center;
}

.final-cta h2 {
  margin: 0 0 26px;
  font-size: clamp(2.1rem, 4.5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.045em;
}

.fine {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.6;
}

.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 30px 32px 44px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
  line-height: 1.7;
}

.site-footer p {
  margin: 6px 0 0;
}

.footer-brand {
  color: var(--fg);
  font-size: 14px;
  font-weight: 600;
}

.footer-brand span {
  margin-left: 8px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.14em;
}

.copyright {
  margin-top: 14px !important;
  opacity: 0.7;
}

.noscript {
  margin: 0;
  padding: 16px;
  background: var(--surface);
  color: var(--muted);
  text-align: center;
  font-size: 12px;
}

.noscript a {
  color: var(--accent);
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 40px;
  }

  .hero-art {
    order: 2;
    max-width: 560px;
    width: 100%;
    margin: 0 auto;
  }

  .canvas-frame {
    aspect-ratio: auto;
    height: clamp(260px, 58vw, 380px);
  }

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

  .card {
    min-height: 0;
  }

  .card h3 {
    margin-top: 30px;
  }

  .steps {
    gap: 22px;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 14px 20px;
  }

  .brand-cn,
  .nav > a:not(.nav-cta) {
    display: none;
  }

  .hero,
  .section,
  .quote {
    padding-right: 20px;
    padding-left: 20px;
  }

  .hero {
    padding-top: 30px;
  }

  .cta-row .btn {
    width: 100%;
  }

  .meta {
    gap: 8px 14px;
  }

  .br-mobile {
    display: block;
  }

  .canvas-caption {
    font-size: 8px;
  }

  .site-footer {
    padding-right: 20px;
    padding-left: 20px;
  }
}

@media (max-width: 380px) {
  h1 {
    font-size: clamp(2.4rem, 12.5vw, 3.2rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}