:root {
  --bg-main: #050506;
  --bg-soft: #0b0d11;
  --panel: #11141d;
  --panel-2: #171b26;
  --line: #2b3040;
  --text: #edf1f8;
  --muted: #a3abbb;
  --accent: #d7b27a;
  --accent-cold: #87aef4;
  --card-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 14% -2%, rgba(216, 176, 122, 0.14), transparent 32%),
    radial-gradient(circle at 90% 8%, rgba(135, 174, 244, 0.14), transparent 28%),
    linear-gradient(180deg, #040405 0%, #080a0f 55%, #050506 100%);
  line-height: 1.75;
  min-height: 100vh;
}

.ambient {
  position: fixed;
  width: 46vw;
  height: 46vw;
  border-radius: 999px;
  pointer-events: none;
  filter: blur(76px);
  opacity: 0.22;
  z-index: -3;
}

.ambient-a {
  top: -16vw;
  left: -11vw;
  background: radial-gradient(circle, rgba(215, 178, 122, 0.46), transparent 65%);
}

.ambient-b {
  top: 8vh;
  right: -16vw;
  background: radial-gradient(circle, rgba(135, 174, 244, 0.4), transparent 65%);
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.08;
  background-image: radial-gradient(rgba(255, 255, 255, 0.85) 0.35px, transparent 0.35px);
  background-size: 4px 4px;
  z-index: -2;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px clamp(16px, 3.6vw, 52px);
  background: rgba(5, 6, 8, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
}

.brand span {
  font-family: "Sora", sans-serif;
  letter-spacing: 0.18em;
  font-weight: 800;
  font-size: 1rem;
}

.brand small {
  color: var(--muted);
  letter-spacing: 0.14em;
  font-family: "Sora", sans-serif;
  font-size: 0.63rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.84rem;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.nav a:hover,
.nav a.active {
  color: var(--text);
  border-color: rgba(215, 178, 122, 0.56);
  background: rgba(215, 178, 122, 0.12);
}

.shell {
  width: min(1180px, calc(100% - 34px));
  margin: 24px auto 86px;
}

.hero {
  position: relative;
  overflow: hidden;
  border-radius: 26px;
  padding: clamp(24px, 3.8vw, 48px);
  border: 1px solid rgba(215, 178, 122, 0.2);
  background: linear-gradient(155deg, rgba(24, 26, 34, 0.94) 0%, rgba(12, 14, 19, 0.98) 74%);
  box-shadow: var(--card-shadow);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(215, 178, 122, 0.08), transparent 28%, transparent 72%, rgba(135, 174, 244, 0.12));
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(240px, 0.75fr);
  gap: 24px;
}

.kicker {
  margin: 0;
  color: var(--accent);
  letter-spacing: 0.18em;
  font-family: "Sora", sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
}

h1 {
  margin: 8px 0 4px;
  font-family: "Sora", sans-serif;
  font-weight: 800;
  font-size: clamp(2.2rem, 5vw, 4.3rem);
  line-height: 1.02;
  letter-spacing: 0.01em;
}

.role {
  margin: 0 0 10px;
  color: #c8d0dd;
  font-family: "Sora", sans-serif;
  font-size: 0.88rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.intro {
  margin: 0;
  max-width: 770px;
  color: #d4dbe8;
  font-size: 1rem;
}

.cta {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn.primary {
  background: linear-gradient(90deg, #d7b27a, #f0cea0);
  color: #221a10;
  box-shadow: 0 10px 22px rgba(215, 178, 122, 0.25);
}

.btn.ghost {
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.meta {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.meta li {
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.03);
  font-size: 0.81rem;
  color: var(--muted);
}

.hero-side {
  border: 1px solid rgba(255, 255, 255, 0.09);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
  border-radius: 16px;
  padding: 15px;
}

.side-title {
  margin: 0 0 10px;
  color: #cfd7e6;
  font-family: "Sora", sans-serif;
  font-size: 0.66rem;
  letter-spacing: 0.18em;
}

.side-metric {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.1);
}

.side-metric span {
  color: var(--muted);
  font-size: 0.82rem;
}

.side-metric strong {
  font-family: "Sora", sans-serif;
  color: var(--accent);
  font-size: 1.15rem;
}

.divider {
  height: 1px;
  margin: 12px 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
}

.stack {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.stack li {
  font-family: "Sora", sans-serif;
  font-size: 0.74rem;
  color: #ced7e8;
  border: 1px solid rgba(135, 174, 244, 0.35);
  background: rgba(135, 174, 244, 0.12);
  border-radius: 999px;
  padding: 4px 8px;
}

.section {
  margin-top: 34px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 10px;
  gap: 12px;
}

.section-head h2 {
  margin: 0;
  font-size: 1.34rem;
  letter-spacing: 0.01em;
}

.section-head p {
  margin: 0;
  font-family: "Sora", sans-serif;
  color: rgba(163, 171, 187, 0.85);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.67rem;
}

.timeline {
  position: relative;
  display: grid;
  gap: 12px;
  padding-left: 16px;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 0;
  width: 1px;
  background: linear-gradient(180deg, rgba(215, 178, 122, 0.55), rgba(135, 174, 244, 0.28));
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px 16px 14px;
  background: linear-gradient(165deg, rgba(18, 21, 29, 0.98), rgba(11, 13, 19, 0.98));
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.26);
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  border-radius: 16px 0 0 16px;
  background: linear-gradient(180deg, rgba(215, 178, 122, 0.85), rgba(135, 174, 244, 0.7));
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(215, 178, 122, 0.45);
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 8px;
}

.card h3 {
  margin: 0;
  line-height: 1.5;
  font-size: 1rem;
}

.card p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.date-badge {
  white-space: nowrap;
  color: #d7deeb;
  font-size: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}

.card ul {
  margin: 0;
  padding-left: 1.08rem;
}

.card li {
  margin: 7px 0;
  color: #dbe2ee;
  font-size: 0.9rem;
}

.footer {
  width: min(1180px, calc(100% - 34px));
  margin: 28px auto 24px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--muted);
  font-size: 0.84rem;
}

.footer p {
  margin: 4px 0;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

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

@media (max-width: 1080px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .grid,
  .two-col {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .shell {
    width: calc(100% - 18px);
  }

  .hero {
    border-radius: 18px;
    padding: 20px 14px;
  }

  .kicker {
    line-height: 1.4;
  }

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

  .timeline {
    padding-left: 0;
  }

  .timeline::before {
    display: none;
  }

  .card-head {
    flex-direction: column;
  }

  .date-badge {
    white-space: normal;
  }
}