:root {
  --color-deep-space: #0A1D33;
  --color-surface: #0F202B;
  --color-neon: #00FF87;
  --color-orange: #FF6A00;
  --color-silver: #B8C4CE;
  --color-text: #F2F6FA;
  --color-muted: #8BA3B5;
  --color-line: #1D3A4D;
  --color-warn: #FFD166;
  --gradient-data: linear-gradient(135deg, #00FF87 0%, #00B8FF 100%);
  --font-heading: "Futura PT Extra Bold", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: "Inter", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-number: "Roboto Mono", "SFMono-Regular", Consolas, monospace;
  --header-w: 300px;
  --header-top-h: 44px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --shadow-panel: 0 1px 0 rgba(0,0,0,0.2), 0 8px 24px rgba(0,0,0,0.25);
}

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

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

body {
  min-height: 100vh;
  padding-left: var(--header-w);
  background:
    radial-gradient(circle at 15% -10%, rgba(0,184,255,0.12), transparent 38%),
    radial-gradient(circle at 95% 20%, rgba(0,255,135,0.08), transparent 28%),
    var(--color-deep-space);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img, svg, video {
  display: block;
  max-width: 100%;
  height: auto;
}

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

ul, ol {
  list-style: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

table {
  border-collapse: collapse;
  width: 100%;
}

input, textarea, select {
  font: inherit;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: 1.15;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

::selection {
  background: var(--color-neon);
  color: #04211c;
}

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

.container {
  width: 100%;
  max-width: 1220px;
  margin-inline: auto;
  padding-inline: clamp(1rem, 3vw, 2rem);
}

.skip-link {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 3000;
  padding: 0.6rem 1rem;
  background: var(--color-neon);
  color: #04211c;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 700;
  transform: translateY(-120%);
  transition: transform 0.2s;
}

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

#main-content {
  outline: none;
  scroll-margin-top: 5rem;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 1000;
  width: var(--header-w);
  display: flex;
  flex-direction: column;
  background:
    linear-gradient(180deg, rgba(0,184,255,0.08), transparent 40%),
    var(--color-deep-space);
  border-right: 1px solid var(--color-line);
  box-shadow: 8px 0 30px rgba(0,0,0,0.25);
}

.site-header::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 4px;
  height: 100%;
  background: var(--gradient-data);
  opacity: 0.55;
}

.header-top {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-height: var(--header-top-h);
  padding: 0.4rem 1rem;
  background: #081A2B;
  border-bottom: 1px solid var(--color-line);
  color: var(--color-muted);
  font-family: var(--font-number);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.status-dot {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-neon);
  box-shadow: 0 0 8px rgba(0,255,135,0.9);
}

.header-top .status-dot {
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% {
    box-shadow: 0 0 4px rgba(0,255,135,0.5);
    opacity: 0.8;
  }
  50% {
    box-shadow: 0 0 12px rgba(0,255,135,0.9);
    opacity: 1;
  }
}

.header-main {
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1.25rem 0.5rem;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 0.15rem;
  align-self: flex-start;
}

.brand-kicker {
  font-family: var(--font-number);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--color-neon);
  text-transform: uppercase;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.55rem;
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: 0.01em;
  color: var(--color-text);
}

.brand-slogan {
  font-family: var(--font-number);
  font-size: 0.62rem;
  letter-spacing: 0.24em;
  color: var(--color-muted);
  text-transform: uppercase;
}

.nav-toggle {
  display: none;
}

.nav-toggle-box {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  width: 16px;
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-neon);
  transition: transform 0.2s, opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

.site-nav {
  flex: 1;
  display: block;
  overflow-y: auto;
  padding: 0.75rem 0.75rem 1rem;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.68rem 0.75rem;
  border-left: 2px solid transparent;
  color: var(--color-silver);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  transition: color 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.nav-index {
  font-family: var(--font-number);
  font-size: 0.62rem;
  color: var(--color-muted);
  transition: color 0.2s var(--ease);
}

.nav-link:hover {
  color: var(--color-text);
  background: linear-gradient(90deg, rgba(0,255,135,0.07), transparent 65%);
  border-left-color: var(--color-line);
}

.nav-link:hover .nav-index {
  color: var(--color-neon);
}

.nav-link[aria-current="page"] {
  color: var(--color-neon);
  background: linear-gradient(90deg, rgba(0,255,135,0.12), transparent 70%);
  border-left-color: var(--color-neon);
}

.nav-link[aria-current="page"] .nav-index {
  color: var(--color-neon);
}

.nav-supplement {
  margin-top: 1rem;
  padding: 0.75rem 0.75rem 0;
  border-top: 1px solid var(--color-line);
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  color: var(--color-muted);
  font-family: var(--font-number);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 2000;
  width: 0%;
  height: 3px;
  background: var(--gradient-data);
  pointer-events: none;
}

.site-footer {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(0,184,255,0.06), transparent 30%),
    #071423;
  border-top: 1px solid var(--color-line);
  color: var(--color-muted);
  padding-top: 3rem;
}

.footer-kinetic {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(-45deg, rgba(255,255,255,0.02) 0 10px, transparent 10px 20px);
  pointer-events: none;
}

.footer-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.4fr;
  gap: clamp(1rem, 3vw, 2.5rem);
  padding-bottom: 2.5rem;
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: var(--color-text);
}

.footer-tagline {
  color: var(--color-neon);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.footer-slogan {
  font-size: 0.67rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.footer-trust {
  margin-top: 0.35rem;
  padding-left: 0.75rem;
  border-left: 2px solid var(--color-neon);
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.footer-nav {
  display: flex;
  flex-direction: column;
}

.footer-heading {
  margin-bottom: 0.7rem;
  font-family: var(--font-number);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--color-text);
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.footer-links a {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--color-muted);
  transition: color 0.2s var(--ease), transform 0.2s var(--ease);
}

.footer-links a:hover {
  color: var(--color-neon);
  transform: translateX(4px);
}

.footer-links a[aria-current="page"] {
  color: var(--color-neon);
}

.footer-contact p {
  font-size: 0.78rem;
  line-height: 1.8;
  word-break: break-all;
}

.footer-legal {
  position: relative;
  border-top: 1px solid var(--color-line);
  background: rgba(0,0,0,0.25);
  padding: 1rem 0;
}

.footer-legal-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
}

.footer-legal p {
  font-family: var(--font-number);
  font-size: 0.68rem;
  color: var(--color-muted);
}

.section {
  padding: clamp(2rem, 6vw, 4.5rem) 0;
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-line);
  padding-bottom: 0.75rem;
}

.section-index {
  font-family: var(--font-number);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  line-height: 0.9;
  color: var(--color-line);
  -webkit-text-stroke: 1px var(--color-neon);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  color: var(--color-text);
}

.section-desc {
  margin-left: auto;
  max-width: 24rem;
  font-size: 0.8rem;
  color: var(--color-muted);
  text-align: right;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: transparent;
  border: 1px solid var(--color-line);
  color: var(--color-silver);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease), transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.btn:hover {
  border-color: var(--color-neon);
  color: var(--color-neon);
  box-shadow: 0 0 16px rgba(0,255,135,0.15);
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--color-neon);
  border-color: var(--color-neon);
  color: #04211c;
}

.btn-primary:hover {
  background: #00FF87;
  color: #04211c;
  box-shadow: 0 0 22px rgba(0,255,135,0.35);
}

.btn-ghost {
  border-color: var(--color-neon);
  color: var(--color-neon);
}

.btn-ghost:hover {
  background: rgba(0,255,135,0.08);
  color: var(--color-neon);
}

.data-card {
  position: relative;
  padding: 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-panel);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.data-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 14px;
  height: 14px;
  background: var(--color-neon);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
}

.data-card-metric {
  font-family: var(--font-number);
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--color-orange);
}

.grid {
  display: grid;
  gap: 1.25rem;
}

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

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

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  font-family: var(--font-number);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(0,255,135,0.1);
  border: 1px solid rgba(0,255,135,0.35);
  color: var(--color-neon);
}

.tag-warn {
  background: rgba(255,209,102,0.12);
  border-color: rgba(255,209,102,0.35);
  color: var(--color-warn);
}

.tag-orange {
  background: rgba(255,106,0,0.12);
  border-color: rgba(255,106,0,0.4);
  color: var(--color-orange);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 1rem 0;
  font-size: 0.8rem;
  color: var(--color-muted);
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--color-line);
}

.breadcrumb a {
  color: var(--color-muted);
}

.breadcrumb a:hover {
  color: var(--color-neon);
}

.breadcrumb [aria-current="page"] {
  color: var(--color-text);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-line);
  background: var(--color-surface);
}

.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.table-wrap th,
.table-wrap td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-line);
  white-space: nowrap;
}

.table-wrap th {
  font-family: var(--font-number);
  color: var(--color-neon);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(0,0,0,0.2);
}

.table-wrap tbody tr:hover {
  background: rgba(0,255,135,0.05);
}

.img-frame {
  position: relative;
  display: block;
  background:
    linear-gradient(135deg, rgba(0,255,135,0.15), rgba(0,184,255,0.1)),
    repeating-linear-gradient(-45deg, var(--color-surface) 0 12px, var(--color-deep-space) 12px 24px);
  border: 1px solid var(--color-line);
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  aspect-ratio: 3 / 2;
}

.img-frame::after {
  content: "IMG";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-number);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--color-muted);
  border: 1px dashed rgba(184,196,206,0.3);
  margin: 1rem;
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

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

@media (max-width: 799px) {
  body {
    padding-left: 0;
  }

  .site-header {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .site-header::after {
    width: 100%;
    height: 3px;
    top: auto;
    bottom: 0;
  }

  .header-top {
    min-height: 32px;
    font-size: 0.6rem;
    padding: 0.2rem 0.75rem;
  }

  .header-main {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 1rem;
  }

  .brand {
    flex-direction: row;
    align-items: baseline;
    gap: 0.45rem;
    flex-wrap: wrap;
  }

  .brand-kicker {
    font-size: 0.58rem;
  }

  .brand-name {
    font-size: 1.2rem;
  }

  .brand-slogan {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.5rem;
    border: 1px solid var(--color-line);
    color: var(--color-text);
    background: var(--color-surface);
  }

  .nav-toggle-label {
    font-family: var(--font-number);
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-muted);
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    padding: 0.5rem 0.75rem 1rem;
    background: #081A2E;
    border-bottom: 1px solid var(--color-line);
    box-shadow: 0 24px 40px rgba(0,0,0,0.4);
  }

  .site-nav[data-open] {
    display: block;
  }

  .nav-list {
    gap: 0.05rem;
  }

  .nav-supplement {
    display: none;
  }

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

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 499px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-legal-inner {
    flex-direction: column;
  }

  .section-desc {
    text-align: left;
    margin-left: 0;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001s !important;
  }

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