:root {
  --c-bg: #0B1026;
  --c-card: #1A1F36;
  --c-neon: #00FF88;
  --c-silver: #C0C0C0;
  --c-text: #E6EAF2;
  --c-cyan: #00E5FF;
  --c-red: #FF3B30;
  --c-purple: #7B2FBE;
  --c-grid: rgba(192, 192, 192, 0.07);
  --c-border: rgba(192, 192, 192, 0.16);
  --c-border-neon: rgba(0, 255, 136, 0.35);
  --font-sans: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "Roboto Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --header-h: 72px;
  --content-width: 1240px;
  --radius-pill: 999px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  background-color: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-sans);
  line-height: 1.7;
  background-image:
    linear-gradient(var(--c-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-grid) 1px, transparent 1px),
    radial-gradient(1100px 520px at 85% -5%, rgba(123, 47, 190, 0.24), transparent 60%),
    radial-gradient(900px 520px at 8% 110%, rgba(0, 255, 136, 0.08), transparent 60%),
    radial-gradient(500px 300px at 50% 40%, rgba(0, 229, 255, 0.03), transparent 60%);
  background-size: 48px 48px, 48px 48px, auto, auto, auto;
  background-repeat: repeat;
}

::selection {
  background: rgba(0, 255, 136, 0.85);
  color: #03120b;
}

:focus-visible {
  outline: 2px solid var(--c-neon);
  outline-offset: 3px;
  border-radius: 4px;
}

a {
  color: inherit;
}

ul[class] {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
}

img {
  max-width: 100%;
  display: block;
}

button {
  font: inherit;
  border: none;
  background: none;
}

#main-content {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: 100%;
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: 24px;
}

.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 28px;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--c-silver);
}

.crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(192, 192, 192, 0.4);
}

.crumbs a {
  color: var(--c-silver);
  text-decoration: none;
  transition: color 0.2s;
}

.crumbs a:hover,
.crumbs a[aria-current="page"] {
  color: var(--c-neon);
}

.section-number {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-neon);
}

.section-number::before {
  content: "";
  width: 32px;
  height: 1px;
  background: var(--c-neon);
  box-shadow: 0 0 10px rgba(0, 255, 136, 0.6);
}

.section-title {
  margin-bottom: 20px;
  font-size: clamp(2.4rem, 5vw, 4rem);
  color: var(--c-text);
}

.section-lede {
  max-width: 64ch;
  margin-bottom: 32px;
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--c-silver);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s, background-color 0.25s, border-color 0.25s, color 0.25s;
}

.btn-primary {
  background: var(--c-neon);
  color: #03120b;
  box-shadow: 0 0 28px rgba(0, 255, 136, 0.22), inset 0 0 0 1px rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: #29ff9a;
  box-shadow: 0 0 36px rgba(0, 255, 136, 0.35);
}

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

.btn-ghost:hover {
  transform: translateY(-2px);
  border-color: var(--c-neon);
  color: var(--c-neon);
}

.btn-small {
  padding: 8px 16px;
  font-size: 0.8rem;
}

.data-panel {
  padding: 24px;
  border-radius: 20px;
  border: 1px solid var(--c-border);
  background: rgba(26, 31, 54, 0.72);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), inset 0 0 0 1px rgba(192, 192, 192, 0.02);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.data-panel:hover {
  border-color: rgba(0, 255, 136, 0.2);
}

.data-stat {
  font-family: var(--font-mono);
}

.stat-label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-silver);
}

.stat-value {
  display: block;
  font-size: clamp(2rem, 5vw, 4.5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-neon);
  text-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
}

.stat-note {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--c-cyan);
}

.fig-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  min-height: 200px;
  border-radius: 20px;
  border: 1px solid var(--c-border);
  background: linear-gradient(135deg, rgba(0, 255, 136, 0.06), rgba(0, 229, 255, 0.02) 45%, rgba(123, 47, 190, 0.12)), var(--c-card);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.fig-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(var(--c-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-grid) 1px, transparent 1px);
  background-size: 36px 36px;
}

.fig-frame img,
.fig-placeholder {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.fig-placeholder {
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-silver);
  background: rgba(11, 16, 38, 0.25);
}

.fig-caption {
  margin-top: 10px;
  font-size: 0.84rem;
  text-align: center;
  color: var(--c-silver);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

.site-header {
  position: fixed;
  top: 12px;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 24px;
  pointer-events: none;
  transition: top 0.3s var(--ease);
}

.site-header[data-scrolled] {
  top: 6px;
}

.progress-track {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1200;
  height: 2px;
  background: rgba(192, 192, 192, 0.12);
  pointer-events: none;
}

.progress-bar {
  position: absolute;
  top: 0;
  left: 0;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--c-neon), var(--c-cyan));
  box-shadow: 0 0 16px rgba(0, 255, 136, 0.6);
  transition: width 0.1s linear;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 1100;
  padding: 10px 16px;
  border-radius: 8px;
  background: var(--c-neon);
  color: #03120b;
  font-weight: 700;
  text-decoration: none;
  pointer-events: auto;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 12px;
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: var(--content-width);
  height: 64px;
  margin: 0 auto;
  padding: 0 14px 0 20px;
  border-radius: 36px;
  border: 1px solid var(--c-border);
  background: rgba(11, 16, 38, 0.72);
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(16px) saturate(130%);
  -webkit-backdrop-filter: blur(16px) saturate(130%);
  pointer-events: auto;
  transition: height 0.3s var(--ease), border-color 0.3s, box-shadow 0.3s, max-width 0.3s, padding 0.3s;
}

.site-header[data-scrolled] .header-inner {
  max-width: 1160px;
  height: 54px;
  border-color: rgba(192, 192, 192, 0.24);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(0, 255, 136, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--c-text);
  text-decoration: none;
}

.brand-mark,
.footer-brand-mark {
  display: grid;
  place-items: center;
  border-radius: 12px;
  border: 1px solid var(--c-border-neon);
  background: rgba(0, 255, 136, 0.08);
  color: var(--c-neon);
  font-family: var(--font-mono);
  font-weight: 700;
  box-shadow: 0 0 20px rgba(0, 255, 136, 0.18);
}

.brand-mark {
  width: 38px;
  height: 38px;
  font-size: 0.85rem;
}

.brand:hover .brand-mark {
  box-shadow: 0 0 30px rgba(0, 255, 136, 0.35);
}

.brand-name {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.brand-caption {
  margin-left: 2px;
  padding-left: 12px;
  border-left: 1px solid rgba(192, 192, 192, 0.3);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--c-silver);
}

.nav-zone {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--c-silver);
  transition: background-color 0.2s, color 0.2s, box-shadow 0.2s;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--c-text);
}

.nav-link[aria-current="page"] {
  background: rgba(0, 255, 136, 0.1);
  color: var(--c-neon);
  box-shadow: inset 0 0 0 1px rgba(0, 255, 136, 0.22);
}

.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 6px;
  width: 4px;
  height: 4px;
  margin-left: -2px;
  border-radius: 50%;
  background: var(--c-neon);
  box-shadow: 0 0 8px var(--c-neon);
}

.data-status {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 2px;
  padding-left: 16px;
  border-left: 1px solid rgba(192, 192, 192, 0.18);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  white-space: nowrap;
  color: var(--c-silver);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-neon);
  box-shadow: 0 0 12px var(--c-neon);
  animation: status-pulse 2s infinite;
}

.status-text {
  text-transform: uppercase;
}

@keyframes status-pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(0.8);
  }
}

.mobile-nav-toggle {
  display: none;
  position: relative;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--c-border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--c-text);
  cursor: pointer;
  transition: border-color 0.2s;
}

.mobile-nav-toggle:hover {
  border-color: var(--c-neon);
}

.mobile-nav-toggle[aria-expanded="true"] .nav-toggle-icon {
  background: transparent;
}

.mobile-nav-toggle[aria-expanded="true"] .nav-toggle-icon::before {
  transform: translateY(0) rotate(45deg);
}

.mobile-nav-toggle[aria-expanded="true"] .nav-toggle-icon::after {
  transform: translateY(0) rotate(-45deg);
}

.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
}

.nav-toggle-icon {
  position: relative;
  transition: background 0.2s;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  transition: transform 0.25s var(--ease);
}

.nav-toggle-icon::before {
  top: -6px;
}

.nav-toggle-icon::after {
  top: 6px;
}

.site-footer {
  position: relative;
  margin-top: 140px;
  border-top: 1px solid rgba(192, 192, 192, 0.14);
  background: linear-gradient(180deg, rgba(11, 16, 38, 0) 0%, var(--c-card) 120px), var(--c-card);
}

.site-footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -1px;
  z-index: 2;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--c-neon), var(--c-cyan), transparent);
  opacity: 0.8;
  pointer-events: none;
}

.site-footer::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(var(--c-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-grid) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}

.footer-shell,
.footer-bottom {
  position: relative;
  z-index: 1;
}

.footer-shell {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.4fr;
  gap: 40px 64px;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 72px 24px 48px;
}

.footer-brand-block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--c-text);
  text-decoration: none;
  font-weight: 700;
}

.footer-brand-mark {
  width: 40px;
  height: 40px;
  font-size: 0.9rem;
}

.footer-tagline {
  max-width: 32ch;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--c-silver);
}

.footer-heading {
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-neon);
}

.footer-links-block,
.footer-contact-block {
  display: flex;
  flex-direction: column;
}

.footer-links,
.footer-contact {
  display: grid;
  gap: 10px;
  list-style: none;
}

.footer-links a,
.footer-contact a {
  display: inline-flex;
  padding: 4px 0;
  font-size: 0.88rem;
  text-decoration: none;
  color: var(--c-silver);
  transition: color 0.2s, transform 0.2s;
}

.footer-links a:hover,
.footer-contact a:hover,
.footer-links a[aria-current="page"],
.footer-contact a[aria-current="page"] {
  color: var(--c-neon);
  transform: translateX(3px);
}

.footer-address {
  margin-top: 18px;
  font-style: normal;
  font-size: 0.82rem;
  line-height: 1.9;
  color: rgba(192, 192, 192, 0.72);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 22px 24px;
  border-top: 1px solid rgba(192, 192, 192, 0.12);
  font-size: 0.8rem;
  color: var(--c-silver);
}

.footer-bottom p {
  margin: 0;
}

.footer-bottom a {
  color: var(--c-silver);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-bottom a:hover {
  color: var(--c-neon);
}

@media (max-width: 1100px) {
  .brand-caption {
    display: none;
  }

  .nav-link {
    padding: 0 10px;
    font-size: 0.85rem;
  }
}

@media (max-width: 860px) {
  .site-header {
    padding: 0 12px;
  }

  .header-inner {
    height: 60px;
    padding: 0 10px 0 14px;
    border-radius: 24px;
  }

  .site-header[data-scrolled] .header-inner {
    max-width: none;
    height: 56px;
  }

  .data-status {
    display: none;
  }

  .mobile-nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    border-radius: 22px;
    border: 1px solid var(--c-border);
    background: rgba(11, 16, 38, 0.96);
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.98);
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
  }

  .site-nav[data-open],
  .mobile-nav-toggle[aria-expanded="true"] + .site-nav {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav-link {
    justify-content: flex-start;
    padding: 12px 16px;
    border-radius: 14px;
    font-size: 1rem;
  }

  .nav-link[aria-current="page"]::after {
    left: auto;
    right: 16px;
    top: 50%;
    bottom: auto;
    margin-left: 0;
    transform: translateY(-50%);
  }

  .nav-zone {
    gap: 4px;
  }
}

@media (max-width: 1024px) {
  .footer-shell {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .footer-brand-block {
    grid-column: span 2;
  }
}

@media (max-width: 640px) {
  .footer-shell {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 48px 20px 32px;
  }

  .footer-brand-block {
    grid-column: auto;
  }

  .footer-bottom {
    justify-content: center;
    text-align: center;
  }

  .data-panel {
    padding: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .progress-bar {
    transition: none;
  }
}