:root {
  --bg-deep: #0A111F;
  --bg-panel: #0E2A47;
  --bg-neutral: #16202E;
  --border: #24344D;
  --accent: #38FF9A;
  --alert: #FF3355;
  --text: #FFFFFF;
  --muted: #A8B7C7;
  --font-display: Montserrat, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-data: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-pill: 999px;
  --container: 1200px;
  --gutter: clamp(20px, 4vw, 48px);
}

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

html {
  scroll-behavior: smooth;
}

body,
p,
h1,
h2,
h3,
h4,
h5,
ul,
ol,
dl,
dd,
figure {
  margin: 0;
}

ul,
ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100dvh;
  background: var(--bg-deep);
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--accent);
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 8px;
}

::selection {
  background: var(--accent);
  color: var(--bg-deep);
}

[hidden] {
  display: none !important;
}

.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;
}

h1,
h2,
h3,
h4,
h5 {
  font-family: var(--font-display);
  color: var(--text);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.6rem, 7vw, 5.2rem);
  font-weight: 900;
}

h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800;
}

h3 {
  font-size: clamp(1.25rem, 2.4vw, 1.75rem);
  font-weight: 800;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 1000;
  padding: 10px 18px;
  background: var(--accent);
  color: var(--bg-deep);
  font-family: var(--font-display);
  font-weight: 800;
  border-radius: var(--radius-pill);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  position: relative;
  z-index: 100;
  background:
    radial-gradient(circle at 18% 0%, rgba(56, 255, 154, 0.08), transparent 38%),
    radial-gradient(circle at 84% 8%, rgba(255, 51, 85, 0.07), transparent 34%),
    linear-gradient(180deg, #0D1A2E 0%, var(--bg-deep) 100%);
  border-bottom: 1px solid var(--border);
}

.site-header::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent) 0 58%, var(--alert) 58% 80%, transparent 80%);
}

.header-inner {
  position: relative;
  max-width: var(--container);
  margin-inline: auto;
  padding: 24px var(--gutter) 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--text);
}

.brand:hover .brand-name {
  color: var(--accent);
}

.brand-symbol {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--accent), #0E2A47);
  color: var(--bg-deep);
  font-family: var(--font-data);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.08em;
  box-shadow: 0 0 24px rgba(56, 255, 154, 0.28);
}

.brand-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

.brand-name {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
  transition: color 0.2s ease;
}

.brand-tag {
  margin-top: 6px;
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.site-nav {
  align-items: center;
  gap: 14px;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 2px;
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-link:hover {
  color: var(--accent);
  background: rgba(56, 255, 154, 0.08);
}

.nav-link[aria-current="page"] {
  color: var(--accent);
  background: rgba(56, 255, 154, 0.1);
  box-shadow: inset 0 0 0 1px rgba(56, 255, 154, 0.28);
}

.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--alert);
  transform: translateX(-50%);
}

.nav-toggle {
  display: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  line-height: 1;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-deep);
  box-shadow: 0 8px 24px rgba(56, 255, 154, 0.22);
}

.btn-primary:hover {
  background: #7CFFBB;
  color: var(--bg-deep);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(56, 255, 154, 0.32);
}

.btn-ghost {
  background: rgba(14, 42, 71, 0.5);
  border-color: var(--border);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(56, 255, 154, 0.06);
}

.btn-nav {
  padding: 10px 18px;
  font-size: 0.875rem;
}

@media (max-width: 899px) {
  .header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding-top: 16px;
  }

  .brand-symbol {
    width: 44px;
    height: 44px;
    border-radius: 14px;
  }

  .brand-name {
    font-size: 1.35rem;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 90;
    padding: 8px 16px 20px;
    background: linear-gradient(180deg, var(--bg-panel), var(--bg-deep));
    border-bottom: 1px solid var(--border);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.5);
  }

  .site-nav[data-open="true"] {
    display: block;
    animation: navIn 0.28s ease;
  }

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

  .nav-link {
    display: block;
    padding: 14px 6px;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
  }

  .nav-link[aria-current="page"]::after {
    right: 8px;
    left: auto;
    bottom: auto;
    top: 50%;
    transform: translateY(-50%);
  }

  .nav-link[aria-current="page"] {
    border-radius: var(--radius-pill);
  }

  .btn-nav {
    width: 100%;
    margin-top: 14px;
  }

  .nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 6px;
    width: 48px;
    height: 48px;
    padding: 0;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: border-color 0.2s ease;
  }

  .nav-toggle:hover {
    border-color: var(--accent);
  }

  .nav-toggle:hover .toggle-bar {
    background: var(--accent);
  }

  .toggle-bar {
    display: block;
    width: 20px;
    height: 2px;
    border-radius: var(--radius-pill);
    background: var(--text);
    transition: transform 0.25s ease, opacity 0.25s ease, background 0.2s ease;
  }

  .nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

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

  .nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
}

@keyframes navIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 900px) {
  .site-nav,
  .site-nav[data-open="true"] {
    display: flex;
    justify-content: center;
    margin-top: 26px;
    border-top: 1px solid var(--border);
    padding: 14px 0 18px;
  }

  .nav-cta {
    margin-left: 10px;
  }

  .header-inner {
    text-align: center;
    padding-top: 32px;
  }
}

.site-footer {
  position: relative;
  margin-top: auto;
  background:
    radial-gradient(circle at 82% 20%, rgba(56, 255, 154, 0.08), transparent 46%),
    linear-gradient(180deg, var(--bg-deep), #0B1222);
  border-top: 1px solid var(--border);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 8%;
  right: 8%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 48px;
  max-width: var(--container);
  margin-inline: auto;
  padding: 64px var(--gutter) 28px;
  align-items: start;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.brand--footer .brand-symbol {
  width: 46px;
  height: 46px;
  border-radius: 14px;
}

.brand--footer .brand-name {
  font-size: 1.6rem;
}

.footer-desc {
  margin-top: 18px;
  max-width: 36em;
  color: var(--muted);
}

.footer-col {
  min-width: 0;
}

.footer-heading {
  margin: 0 0 18px;
  padding-left: 12px;
  border-left: 3px solid var(--accent);
  font-family: var(--font-display);
  font-size: 0.875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 24px;
}

.footer-link {
  display: inline-block;
  padding: 4px 0;
  color: var(--muted);
  transition: color 0.2s ease, transform 0.2s ease;
}

.footer-link:hover {
  color: var(--accent);
  transform: translateX(3px);
}

.footer-contact address {
  display: grid;
  gap: 8px;
  font-style: normal;
  color: var(--muted);
}

.footer-note {
  margin-top: 12px;
  color: var(--accent);
  font-family: var(--font-data);
  font-size: 0.875rem;
}

.footer-legal {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 24px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-family: var(--font-data);
  font-size: 0.8125rem;
}

@media (max-width: 1023px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 599px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-top: 48px;
  }

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

@media (min-width: 1024px) {
  .footer-col:not(.footer-brand) {
    padding-left: 24px;
    border-left: 1px solid var(--border);
  }
}

.content-container,
.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: clamp(64px, 10vw, 120px);
}

.section--tight {
  padding-block: clamp(40px, 6vw, 72px);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px 24px;
  margin-bottom: 34px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  color: var(--accent);
  font-family: var(--font-data);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.section-label::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 16px rgba(56, 255, 154, 0.7);
}

.section-title {
  margin: 0;
}

.lead {
  max-width: 62ch;
  color: var(--muted);
  font-size: 1.125rem;
  line-height: 1.8;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 28px;
  font-family: var(--font-data);
  font-size: 0.875rem;
  color: var(--muted);
}

.breadcrumb a {
  color: var(--muted);
  transition: color 0.2s ease;
}

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

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

.breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--border);
}

.grid {
  display: grid;
  gap: 24px;
}

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

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

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

.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr));
  gap: 24px;
}

@media (max-width: 1023px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

.card {
  padding: 28px;
  background: linear-gradient(180deg, var(--bg-panel), rgba(14, 42, 71, 0.55));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 255, 154, 0.4);
}

.stat-card {
  padding: 24px;
  background: linear-gradient(135deg, var(--bg-panel), var(--bg-neutral));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.stat-value {
  font-family: var(--font-data);
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1;
  color: var(--accent);
}

.stat-label {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.9375rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid rgba(56, 255, 154, 0.22);
  border-radius: var(--radius-pill);
  background: rgba(56, 255, 154, 0.08);
  color: var(--accent);
  font-size: 0.8125rem;
  font-weight: 700;
}

.media {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, var(--bg-panel), #0C1B31),
    var(--bg-deep);
  border: 1px solid var(--border);
}

.media::before {
  content: "";
  display: block;
  padding-top: 56.25%;
}

.media--video::before {
  padding-top: 62.5%;
}

.media--square::before {
  padding-top: 100%;
}

.media--portrait::before {
  padding-top: 125%;
}

.media > img,
.media > .media-cover {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media::after {
  content: "";
  position: absolute;
  right: -18%;
  bottom: -32%;
  width: 58%;
  height: 58%;
  background: radial-gradient(circle, rgba(56, 255, 154, 0.22), transparent 66%);
  transform: rotate(-15deg);
  pointer-events: none;
}

.tabs {
  margin: 24px 0;
}

.tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.tab-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  color: var(--muted);
  font-family: var(--font-body);
  font-weight: 700;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.tab-button:hover {
  color: var(--text);
  border-color: var(--accent);
}

.tab-button[aria-selected="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg-deep);
  box-shadow: 0 0 18px rgba(56, 255, 154, 0.28);
}

.tab-panel {
  padding: 28px 0;
}

.tab-panel[hidden] {
  display: none;
}

.timeline {
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--border), transparent);
}

.timeline-item {
  position: relative;
  padding: 0 0 28px 36px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-deep);
  border: 3px solid var(--accent);
  box-shadow: 0 0 14px rgba(56, 255, 154, 0.4);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-time {
  font-family: var(--font-data);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.timeline-title {
  margin: 6px 0 8px;
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 800;
}

.article-content {
  color: var(--muted);
  font-size: 1.0625rem;
  line-height: 1.9;
}

.article-content p {
  margin-bottom: 1.4em;
}

.article-content h2 {
  margin-top: 2em;
}

[data-reveal] {
  opacity: 0;
  transform: translate3d(0, 18px, 0);
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: opacity, transform;
}

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

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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