:root {
  color-scheme: dark;
  --bg: #070b14;
  --bg-2: #0b1020;
  --panel: rgba(14, 20, 39, 0.76);
  --panel-strong: rgba(18, 25, 50, 0.94);
  --text: #e8edf7;
  --muted: #a2afca;
  --line: rgba(166, 185, 255, 0.14);
  --accent: #7ce3c5;
  --accent-2: #7aa7ff;
  --accent-3: #ffb56b;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(122, 167, 255, 0.16), transparent 34%),
    radial-gradient(circle at 85% 15%, rgba(124, 227, 197, 0.12), transparent 28%),
    linear-gradient(180deg, #060910 0%, #080d18 48%, #05070d 100%);
  color: var(--text);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

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

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.8), transparent 95%);
  pointer-events: none;
  z-index: -1;
}

.backdrop {
  position: fixed;
  inset: auto;
  width: 34rem;
  height: 34rem;
  border-radius: 999px;
  filter: blur(72px);
  opacity: 0.35;
  z-index: -2;
  pointer-events: none;
}

.backdrop-left {
  top: -10rem;
  left: -12rem;
  background: rgba(122, 167, 255, 0.34);
}

.backdrop-right {
  top: 18rem;
  right: -14rem;
  background: rgba(124, 227, 197, 0.28);
}

.grid-overlay {
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.35;
  pointer-events: none;
  z-index: -1;
}

.topbar,
main,
.footer {
  width: min(1160px, calc(100% - 2rem));
  margin: 0 auto;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.2rem 0 0;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(20px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex: 0 1 auto;
  min-width: 0;
}

.brand-icon {
  width: 2.2rem;
  height: 2.2rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.7rem;
  background: linear-gradient(145deg, rgba(124, 227, 197, 0.92), rgba(122, 167, 255, 0.86));
  box-shadow: 0 10px 30px rgba(122, 167, 255, 0.28);
}

.brand-mark {
  width: 2.8rem;
  height: 2.8rem;
  flex-shrink: 0;
  border-radius: 0.9rem;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, rgba(124, 227, 197, 0.92), rgba(122, 167, 255, 0.86));
  color: #09101f;
  font-weight: 900;
  box-shadow: 0 10px 30px rgba(122, 167, 255, 0.28);
}

.brand-logo {
  width: 1.6rem;
  height: 1.6rem;
  object-fit: contain;
  border-radius: 0.5rem;
}

.brand-text {
  display: grid;
  gap: 0.1rem;
  min-width: 0;
  flex: 1 1 auto;
}

.brand-text strong {
  font-size: 1.02rem;
  letter-spacing: 0.04em;
}

.brand-text span {
  color: var(--muted);
  font-size: 0.86rem;
}

.nav {
  display: flex;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(11, 16, 32, 0.62);
  box-shadow: var(--shadow);
}

.nav a {
  color: var(--muted);
  font-size: 0.92rem;
  transition: color 180ms ease;
}

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

main {
  padding: 2.2rem 0 4rem;
}

.hero {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 1.4rem;
  align-items: stretch;
  min-height: calc(100vh - 6rem);
  padding-top: 2rem;
}

.hero-copy,
.hero-panel,
.card,
.founder-card,
.timeline article,
.panel-card {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(24px);
}

.hero-copy {
  border-radius: 2rem;
  padding: clamp(1.5rem, 3vw, 3rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.eyebrow {
  margin: 0 0 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--accent);
  font-size: 0.76rem;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
}

h1 {
  font-size: clamp(2.8rem, 7vw, 5.2rem);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.9rem, 4vw, 3rem);
}

h3 {
  font-size: 1.2rem;
}

.lead {
  margin: 1.3rem 0 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: 1.06rem;
}

.tagline {
  margin: 0.65rem 0 0;
  color: var(--accent);
  font-size: 0.98rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.8rem;
}

.source-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.9rem;
}

.source-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.7rem;
  padding: 0 1rem;
  border-radius: 999px;
  border: 1px solid rgba(124, 227, 197, 0.22);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  font-size: 0.93rem;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.source-link:hover {
  transform: translateY(-2px);
  border-color: rgba(124, 227, 197, 0.42);
  background: rgba(124, 227, 197, 0.08);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 1.15rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
  border-color: rgba(124, 227, 197, 0.38);
}

.primary {
  color: #08121c;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent) 0%, #dbfff4 100%);
}

.secondary {
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 2rem;
}

.hero-metrics div {
  padding: 1rem;
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.hero-metrics strong,
.panel-kicker,
.timeline span,
.portrait-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-metrics strong {
  font-size: 0.9rem;
  margin-bottom: 0.2rem;
  color: var(--accent);
}

.hero-metrics span {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-panel {
  border-radius: 2rem;
  padding: 1rem;
  display: grid;
  gap: 1rem;
}

.panel-card {
  border-radius: 1.5rem;
  padding: 1.2rem;
}

.panel-glow {
  position: relative;
  overflow: hidden;
}

.panel-glow::after {
  content: "";
  position: absolute;
  inset: -20%;
  background: radial-gradient(circle at 20% 25%, rgba(122, 167, 255, 0.22), transparent 30%),
    radial-gradient(circle at 84% 20%, rgba(124, 227, 197, 0.16), transparent 28%),
    radial-gradient(circle at 60% 80%, rgba(255, 181, 107, 0.13), transparent 25%);
  animation: drift 10s ease-in-out infinite alternate;
}

.panel-kicker {
  position: relative;
  z-index: 1;
  color: var(--accent-2);
  font-size: 0.76rem;
  margin-bottom: 0.9rem;
}

.stack {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 0.75rem;
}

.stack-item {
  padding: 1rem 1rem;
  border-radius: 1rem;
  background: rgba(7, 11, 20, 0.68);
  border: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--muted);
}

.stack-item.active {
  color: var(--text);
  border-color: rgba(124, 227, 197, 0.4);
  background: rgba(12, 26, 34, 0.9);
}

.quote-card {
  min-height: 8rem;
  display: grid;
  place-items: center;
  text-align: center;
}

.quote-card p {
  margin: 0;
  font-size: 1.06rem;
  color: var(--text);
}

.section {
  padding: 4rem 0 0;
}

.section-heading {
  display: grid;
  gap: 0.5rem;
  margin-bottom: 1.2rem;
}

.cards {
  display: grid;
  gap: 1rem;
}

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

.card,
.founder-card,
.timeline article {
  border-radius: 1.6rem;
}

.card {
  padding: 1.3rem;
}

.card p,
.founder-card p,
.timeline p,
.split p {
  color: var(--muted);
}

.accent {
  background:
    radial-gradient(circle at top right, rgba(122, 167, 255, 0.12), transparent 28%),
    rgba(15, 21, 42, 0.84);
}

.split {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1rem;
}

.bullet-list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.65rem;
}

.bullet-list li {
  position: relative;
  padding-left: 1.1rem;
  color: var(--text);
}

.bullet-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--accent-3);
}

.diagram {
  border: 1px solid var(--line);
  border-radius: 1.6rem;
  padding: 1.2rem;
  background: var(--panel-strong);
  display: grid;
  align-items: center;
  justify-items: center;
  gap: 0.55rem;
}

.diagram-node {
  width: min(100%, 23rem);
  text-align: center;
  padding: 1rem 1.1rem;
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.diagram-node.highlight {
  border-color: rgba(124, 227, 197, 0.45);
  background: rgba(8, 28, 27, 0.9);
  color: var(--accent);
}

.diagram-arrow {
  color: var(--accent-2);
  font-size: 1.2rem;
}

.founder-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 1rem;
}

.founder-card {
  padding: 1.4rem;
  background: var(--panel-strong);
}

.portrait {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 1rem;
}

.portrait-badge {
  width: 5rem;
  height: 5rem;
  border-radius: 1.4rem;
  background: linear-gradient(145deg, rgba(255, 181, 107, 0.9), rgba(122, 167, 255, 0.88));
  color: #0a1018;
  font-weight: 900;
  font-size: 1.1rem;
  box-shadow: 0 16px 44px rgba(255, 181, 107, 0.16);
}

.bio p:last-child {
  margin-bottom: 0;
}

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

.timeline article {
  padding: 1.2rem;
  background: linear-gradient(180deg, rgba(16, 23, 44, 0.96), rgba(10, 14, 28, 0.9));
}

.timeline span {
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 0.9rem;
  margin-bottom: 1rem;
  background: rgba(124, 227, 197, 0.12);
  color: var(--accent);
  font-size: 0.8rem;
}

.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem 0 3rem;
  color: var(--muted);
  font-size: 0.93rem;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 650ms ease, transform 650ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes drift {
  from {
    transform: translate3d(-2%, -1%, 0) scale(1);
  }
  to {
    transform: translate3d(3%, 2%, 0) scale(1.05);
  }
}

@media (max-width: 1024px) {
  .hero,
  .split,
  .founder-grid,
  .timeline {
    grid-template-columns: 1fr;
  }

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

  .hero {
    min-height: auto;
  }
}

@media (max-width: 720px) {
  .topbar {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    padding-top: 0.55rem;
  }

  .brand {
    flex: 1 1 auto;
    max-width: none;
    gap: 0.55rem;
  }

  .brand-icon {
    width: 1.45rem;
    height: 1.45rem;
    border-radius: 0.4rem;
  }

  .brand-logo {
    width: 0.95rem;
    height: 0.95rem;
    border-radius: 0.25rem;
  }

  .brand-text strong {
    font-size: 0.9rem;
    line-height: 1.1;
  }

  .brand-text span {
    display: none;
  }

  .nav {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    border-radius: 1.1rem;
    padding: 0.65rem 0.8rem;
    gap: 0.75rem;
  }

  .nav::-webkit-scrollbar {
    display: none;
  }

  .nav a {
    white-space: nowrap;
    flex: 0 0 auto;
  }

  main {
    padding-top: 1rem;
  }

  .hero {
    padding-top: 0.7rem;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .portrait {
    grid-template-columns: 1fr;
    justify-items: start;
  }
}