:root {
  --bg: #06111d;
  --bg-deep: #030914;
  --panel: rgba(8, 21, 38, 0.72);
  --panel-strong: rgba(8, 21, 38, 0.88);
  --border: rgba(182, 215, 255, 0.14);
  --text: #edf4ff;
  --muted: #9fb4ce;
  --soft: #71849d;
  --accent: #34b8ff;
  --accent-soft: rgba(52, 184, 255, 0.18);
  --glow: rgba(109, 188, 255, 0.45);
  --shadow: 0 32px 120px rgba(0, 0, 0, 0.34);
  --radius: 28px;
  --radius-sm: 18px;
  --content: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Manrope", "PingFang SC", "Hiragino Sans GB", sans-serif;
  background:
    radial-gradient(circle at 20% 0%, rgba(77, 148, 255, 0.2), transparent 32%),
    radial-gradient(circle at 80% 8%, rgba(98, 193, 255, 0.16), transparent 28%),
    linear-gradient(180deg, #04101d 0%, #07111e 38%, #030914 100%);
  color: var(--text);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.22;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.48), transparent 90%);
}

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

.page-shell {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
  padding: 24px 0 56px;
}

.site-header,
.site-footer,
.hero,
.content-grid,
.timeline,
.cta-strip {
  position: relative;
  z-index: 1;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 4px 2px 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.9rem;
  letter-spacing: -0.05em;
}

.brand-text {
  color: #f8fbff;
}

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, #76d8ff, #0c84ff);
  box-shadow: 0 0 30px rgba(42, 169, 255, 0.7);
}

.site-nav {
  display: inline-flex;
  align-items: center;
  gap: 28px;
  color: var(--muted);
  font-size: 0.98rem;
}

.site-nav a {
  position: relative;
  transition: color 180ms ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

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

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.panel {
  background: linear-gradient(180deg, rgba(10, 26, 44, 0.72), rgba(7, 17, 31, 0.84));
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.hero {
  overflow: hidden;
  min-height: 860px;
  border-radius: 40px;
  padding: 66px 48px 42px;
  display: grid;
  align-items: start;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 36px;
}

.hero-copy {
  position: relative;
  z-index: 2;
  padding-top: 48px;
  max-width: 720px;
  text-shadow: 0 10px 40px rgba(0, 0, 0, 0.28);
}

.kicker,
.section-label {
  margin: 0 0 18px;
  color: #6cd5ff;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.88rem;
}

.hero h1 {
  margin: 0;
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 18px;
  line-height: 0.98;
}

.headline-cn {
  font-family: "Noto Serif SC", serif;
  font-size: clamp(4.6rem, 8vw, 7.5rem);
  font-weight: 900;
  letter-spacing: -0.09em;
}

.headline-slash {
  font-family: "Noto Serif SC", serif;
  font-size: clamp(2.8rem, 4vw, 4.4rem);
  color: rgba(255, 255, 255, 0.78);
}

.headline-en {
  font-family: "Noto Serif SC", serif;
  font-weight: 500;
  font-size: clamp(2.8rem, 4vw, 4.4rem);
  color: rgba(255, 255, 255, 0.92);
  letter-spacing: -0.03em;
}

.lead,
.lead-en {
  margin: 28px 0 0;
  font-size: 1.55rem;
  line-height: 1.72;
  letter-spacing: -0.03em;
  max-width: 760px;
}

.lead-en {
  margin-top: 22px;
  font-size: 1.24rem;
  line-height: 1.65;
  color: var(--muted);
  max-width: 680px;
}

.hero-actions {
  margin-top: 38px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 58px;
  padding: 0 28px;
  border-radius: 18px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 1rem;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

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

.button-primary {
  background: linear-gradient(135deg, #3fc7ff, #067cff);
  box-shadow: 0 18px 40px rgba(8, 129, 255, 0.34);
}

.button-secondary {
  background: rgba(6, 14, 26, 0.4);
  border-color: rgba(197, 228, 255, 0.2);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: rgba(130, 206, 255, 0.42);
}

.identity-card {
  position: relative;
  z-index: 2;
  align-self: end;
  justify-self: end;
  width: min(100%, 320px);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  border-radius: 28px;
  background: rgba(185, 216, 255, 0.1);
  border: 1px solid rgba(198, 227, 255, 0.18);
  backdrop-filter: blur(14px);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
}

.avatar-mark {
  flex: 0 0 78px;
  width: 78px;
  height: 78px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background:
    radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.36), transparent 35%),
    linear-gradient(145deg, #55c7ff, #0d3357);
  display: grid;
  place-items: center;
  font-family: "Noto Serif SC", serif;
  font-weight: 900;
  font-size: 2rem;
}

.identity-name {
  margin: 0;
  font-size: 1.24rem;
  font-weight: 700;
}

.identity-meta,
.identity-link {
  margin: 8px 0 0;
  color: #c3d7eb;
  line-height: 1.55;
}

.identity-link {
  color: #eef5ff;
  font-weight: 700;
}

.identity-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.identity-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid rgba(130, 206, 255, 0.24);
  background: rgba(13, 30, 52, 0.5);
  color: #d9ecff;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.hero-scene {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(3, 12, 24, 0.92) 0%, rgba(6, 19, 37, 0.68) 38%, rgba(7, 22, 42, 0.28) 56%, rgba(6, 18, 33, 0.34) 100%),
    linear-gradient(180deg, rgba(5, 18, 33, 0.18), rgba(2, 8, 16, 0.24)),
    url("./assets/hero-bg.png");
  background-size: cover;
  background-position: 72% center;
}

.hero-scene::before,
.hero-scene::after {
  content: "";
  position: absolute;
  inset: 0;
}

.hero-scene::before {
  background:
    radial-gradient(circle at 82% 18%, rgba(255, 255, 255, 0.16), transparent 24%),
    radial-gradient(circle at 18% 8%, rgba(76, 151, 255, 0.2), transparent 30%);
}

.hero-scene::after {
  background:
    linear-gradient(180deg, rgba(7, 18, 31, 0) 55%, rgba(4, 10, 18, 0.9) 100%),
    linear-gradient(0deg, rgba(5, 10, 18, 0.22), rgba(5, 10, 18, 0.22));
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.column,
.timeline,
.cta-strip {
  border-radius: var(--radius);
}

.column {
  padding: 28px 24px 24px;
}

.section-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.section-head h2,
.timeline-head h2,
.cta-strip h2 {
  margin: 0;
  font-size: 1.58rem;
  line-height: 1.18;
  letter-spacing: -0.04em;
}

.section-head a {
  color: var(--muted);
  font-size: 0.96rem;
}

.note-list,
.focus-list {
  display: grid;
  gap: 14px;
}

.note-card,
.focus-item,
.quote-card {
  border-radius: 22px;
  border: 1px solid rgba(184, 217, 255, 0.11);
  background: linear-gradient(180deg, rgba(10, 22, 38, 0.72), rgba(5, 13, 24, 0.88));
}

.note-card {
  padding: 18px 18px 16px;
}

.note-card h3 {
  margin: 6px 0 8px;
  font-size: 1.08rem;
  line-height: 1.4;
}

.note-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.note-state {
  margin: 0;
  color: #84d8ff;
  font-size: 0.82rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.focus-item {
  padding: 18px;
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}

.focus-title {
  margin: 0;
  font-size: 1.04rem;
  font-weight: 700;
}

.focus-copy {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #92defd;
  border: 1px solid rgba(107, 202, 255, 0.22);
  font-size: 0.82rem;
  font-weight: 700;
  white-space: nowrap;
}

.quote-card {
  margin-top: 16px;
  padding: 22px 18px;
}

.quote-card p {
  margin: 0;
  font-family: "Noto Serif SC", serif;
  line-height: 1.8;
  color: #dbe9f8;
}

.about-copy p {
  margin: 0 0 16px;
  color: var(--muted);
  line-height: 1.85;
}

.about-list {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
  display: grid;
  gap: 12px;
}

.about-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid rgba(193, 226, 255, 0.11);
  background: rgba(9, 18, 32, 0.46);
}

.about-list span {
  color: var(--soft);
}

.about-list strong {
  font-weight: 700;
  text-align: right;
}

.asset-compare {
  margin-top: 18px;
  padding: 30px 26px;
}

.asset-note {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.78;
  max-width: 820px;
}

.asset-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.asset-card {
  padding: 22px 20px;
  border-radius: 24px;
  border: 1px solid rgba(184, 217, 255, 0.11);
  background: linear-gradient(180deg, rgba(10, 22, 38, 0.78), rgba(5, 13, 24, 0.9));
}

.asset-meta {
  margin: 0 0 10px;
  color: #84d8ff;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.asset-card h3 {
  margin: 0 0 12px;
  font-size: 1.2rem;
  line-height: 1.28;
}

.asset-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.82;
}

.asset-card p + p {
  margin-top: 12px;
}

.asset-view {
  color: #e6f1ff !important;
}

.timeline {
  margin-top: 18px;
  padding: 30px 26px;
}

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

.timeline-row::before {
  content: "";
  position: absolute;
  top: 14px;
  left: 14px;
  right: 14px;
  height: 1px;
  background: linear-gradient(90deg, rgba(163, 205, 245, 0.2), rgba(163, 205, 245, 0.7), rgba(163, 205, 245, 0.2));
}

.timeline-step {
  position: relative;
  padding-top: 34px;
}

.timeline-dot {
  position: absolute;
  top: 0;
  left: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid rgba(186, 222, 255, 0.28);
  background: radial-gradient(circle, rgba(112, 208, 255, 0.9) 0%, rgba(12, 42, 75, 1) 58%);
  box-shadow: 0 0 20px rgba(91, 194, 255, 0.45);
}

.timeline-step h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
}

.timeline-step p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.cta-strip {
  margin-top: 18px;
  padding: 30px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
}

.cta-strip p:last-of-type {
  color: var(--muted);
  line-height: 1.8;
  max-width: 720px;
}

.site-footer {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 26px;
  padding: 28px 4px 0;
  color: var(--soft);
}

.footer-brand {
  font-size: 1.5rem;
}

.site-footer p {
  margin: 12px 0 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px 24px;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 600ms ease,
    transform 600ms ease;
}

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

@media (max-width: 1120px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: 800px;
  }

  .identity-card {
    justify-self: start;
    align-self: start;
  }

  .content-grid,
  .timeline-row {
    grid-template-columns: 1fr;
  }

  .asset-grid {
    grid-template-columns: 1fr;
  }

  .timeline-row::before {
    display: none;
  }

  .cta-strip,
  .site-footer {
    flex-direction: column;
    align-items: start;
  }
}

@media (max-width: 760px) {
  .page-shell {
    width: min(calc(100% - 24px), var(--content));
    padding-top: 18px;
  }

  .site-header {
    flex-direction: column;
    align-items: start;
    padding-bottom: 18px;
  }

  .site-nav {
    gap: 18px;
    flex-wrap: wrap;
  }

  .hero {
    padding: 28px 20px 24px;
    min-height: 760px;
    border-radius: 28px;
  }

  .hero-copy {
    padding-top: 12px;
  }

  .lead {
    font-size: 1.14rem;
  }

  .lead-en {
    font-size: 1rem;
  }

  .hero-scene {
    background-position: 64% center;
  }

  .identity-card,
  .column,
  .timeline,
  .cta-strip {
    border-radius: 22px;
  }

  .column,
  .timeline,
  .cta-strip {
    padding: 22px 18px;
  }

  .button {
    width: 100%;
  }

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}