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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
  background-image:
    linear-gradient(rgba(242, 245, 247, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242, 245, 247, 0.025) 1px, transparent 1px);
  background-size: 64px 64px;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

:root {
  --color-bg: #05070A;
  --color-deep: #0B1E2D;
  --color-panel: #11151C;
  --color-text: #F2F5F7;
  --color-muted: #8A9BA8;
  --color-green: #1EF27D;
  --color-gold: #FFC53D;
  --color-purple: #9D4DFF;
  --color-danger: #FF5A6A;
  --color-line: rgba(255, 255, 255, 0.12);
  --font-display: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', Impact, sans-serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Roboto Mono', Consolas, monospace;
  --header-h: 72px;
}

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

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

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

button {
  font: inherit;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.12;
  text-wrap: balance;
}

p {
  color: var(--color-text);
}

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

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

.container {
  width: min(100% - 40px, 1360px);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 1001;
  padding: 12px 20px;
  background: var(--color-green);
  color: var(--color-bg);
  font-weight: 700;
  font-size: 0.9rem;
  transition: top 0.2s;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 800;
  background: rgba(5, 7, 10, 0.86);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: var(--header-h);
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-text);
}

.brand-mark {
  position: relative;
  width: 34px;
  height: 34px;
  flex: none;
  display: grid;
  place-items: center;
  background: var(--color-green);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.brand-mark::before {
  content: '';
  width: 12px;
  height: 12px;
  background: var(--color-bg);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.brand-name {
  font: 900 1.2rem/1 var(--font-display);
  letter-spacing: 0.06em;
  color: var(--color-text);
}

.brand-sub {
  display: block;
  margin-top: 4px;
  font: 500 0.62rem/1 var(--font-mono);
  letter-spacing: 0.22em;
  color: var(--color-gold);
}

.site-nav {
  counter-reset: nav;
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  font: 600 0.88rem var(--font-body);
  color: var(--color-text);
  border: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s, background-color 0.2s;
}

.nav-link::before {
  counter-increment: nav;
  content: counter(nav, decimal-leading-zero) "/";
  font: 600 0.62rem var(--font-mono);
  color: var(--color-muted);
}

.nav-link:hover {
  color: var(--color-green);
  border-color: rgba(30, 242, 125, 0.35);
}

.nav-link[aria-current="page"] {
  color: var(--color-green);
  border-color: var(--color-line);
  background: rgba(30, 242, 125, 0.08);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-line);
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
}

.nav-toggle .bar {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
  transition: transform 0.2s, opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] .bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid var(--color-line);
  background: var(--color-panel);
  color: var(--color-text);
  font: 700 0.9rem/1 var(--font-body);
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s, transform 0.2s;
}

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

.btn-primary {
  background: var(--color-green);
  border-color: var(--color-green);
  color: var(--color-bg);
}

.btn-primary:hover {
  background: #0BC966;
  border-color: #0BC966;
}

.btn-ghost {
  background: transparent;
  border-color: var(--color-line);
  color: var(--color-text);
}

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

.btn-gold {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: var(--color-bg);
}

.btn-gold:hover {
  background: #FFB31A;
  border-color: #FFB31A;
}

.section {
  padding: 88px 0;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 40px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
}

.section-desc {
  max-width: 56ch;
  color: var(--color-muted);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  font: 500 0.75rem var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-gold);
}

.eyebrow::before {
  content: '';
  width: 28px;
  height: 2px;
  background: var(--color-green);
}

.tag {
  display: inline-block;
  padding: 4px 10px;
  font: 600 0.7rem var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-green);
  border: 1px solid rgba(30, 242, 125, 0.35);
  background: rgba(30, 242, 125, 0.08);
}

.tag-gold {
  color: var(--color-gold);
  border-color: rgba(255, 197, 61, 0.35);
  background: rgba(255, 197, 61, 0.08);
}

.data-num {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}

.panel {
  position: relative;
  padding: 24px;
  border: 1px solid var(--color-line);
  background: var(--color-panel);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.3), 8px 8px 0 1px rgba(255, 255, 255, 0.02);
}

.panel::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 56px;
  height: 3px;
  background: var(--color-green);
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.bento-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 180px;
  padding: 24px;
  border: 1px solid var(--color-line);
  background: var(--color-panel);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.3), 8px 8px 0 1px rgba(255, 255, 255, 0.02);
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.bento-card:hover {
  transform: scale(1.02);
  border-color: rgba(30, 242, 125, 0.5);
}

.bento-card::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  width: 24px;
  height: 24px;
  border-top: 3px solid var(--color-green);
  border-left: 3px solid var(--color-green);
}

.bento-card--feature {
  grid-column: span 2;
  grid-row: span 2;
  min-height: 360px;
  padding: 32px;
}

.bento-card--feature::before {
  width: 40px;
  height: 40px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.grid-item {
  grid-column: span 4;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 32px;
  padding: 0;
  list-style: none;
  font-size: 0.85rem;
  color: var(--color-muted);
}

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

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

.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--color-muted);
}

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

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.filter-btn {
  padding: 8px 14px;
  border: 1px solid var(--color-line);
  background: transparent;
  color: var(--color-muted);
  font: 600 0.8rem var(--font-body);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background-color 0.2s;
}

.filter-btn:hover {
  color: var(--color-text);
  border-color: var(--color-green);
}

.filter-btn.is-active,
.filter-btn[aria-pressed="true"] {
  background: var(--color-green);
  border-color: var(--color-green);
  color: var(--color-bg);
}

[data-filter-hidden="true"] {
  display: none;
}

.image-frame {
  position: relative;
  overflow: hidden;
  background: var(--color-deep);
  border: 1px solid var(--color-line);
}

.image-frame::before {
  content: '';
  display: block;
  padding-top: 56.25%;
}

.image-frame > * {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-frame--wide::before {
  padding-top: 42%;
}

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

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

.corner-label {
  position: absolute;
  top: 0;
  right: 0;
  padding: 6px 12px;
  font: 700 0.65rem var(--font-mono);
  letter-spacing: 0.1em;
  background: var(--color-gold);
  color: var(--color-bg);
}

.prose {
  max-width: 72ch;
}

.prose p {
  margin-bottom: 1em;
  color: var(--color-text);
}

.prose h2 {
  margin: 2em 0 0.6em;
}

.prose ul,
.prose ol {
  margin: 0 0 1.5em 1.4em;
}

.site-footer {
  position: relative;
  z-index: 1;
  margin-top: auto;
  background: var(--color-deep);
  border-top: 1px solid var(--color-line);
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 120px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-green), var(--color-gold));
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr 1fr;
  gap: 56px;
  padding: 80px 0 48px;
}

.footer-brand .site-brand {
  margin-bottom: 16px;
}

.footer-about {
  max-width: 36ch;
  margin-bottom: 16px;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.footer-trust {
  max-width: 44ch;
  padding-left: 16px;
  border-left: 3px solid var(--color-purple);
  color: var(--color-muted);
  font-size: 0.9rem;
}

.footer-heading {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  font: 800 0.85rem var(--font-display);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text);
}

.footer-heading::after {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--color-gold);
}

.footer-links {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 24px;
}

.footer-links a {
  color: var(--color-muted);
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--color-green);
}

.footer-contact-list {
  list-style: none;
  display: grid;
  gap: 14px;
}

.footer-contact-list li {
  display: grid;
  gap: 2px;
}

.footer-contact-label {
  font: 600 0.68rem var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-purple);
}

.footer-contact-label::before {
  content: '◆ ';
  font-size: 0.55rem;
  vertical-align: middle;
}

.footer-contact-value {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--color-text);
  word-break: break-all;
}

.footer-note {
  margin-top: 20px;
  color: var(--color-muted);
  font-size: 0.82rem;
}

.footer-bottom {
  padding: 24px 0;
  border-top: 1px solid var(--color-line);
}

.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.footer-copy {
  color: var(--color-muted);
  font-size: 0.82rem;
}

.footer-icp a,
.footer-icp span {
  margin-left: 16px;
  color: var(--color-muted);
  font-size: 0.82rem;
  white-space: nowrap;
}

.footer-icp a:hover {
  color: var(--color-green);
}

.progressbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  z-index: 1200;
  background: linear-gradient(90deg, var(--color-green), var(--color-gold));
  box-shadow: 0 0 12px rgba(30, 242, 125, 0.5);
}

.top-button {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 900;
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border: 1px solid var(--color-line);
  background: var(--color-panel);
  color: var(--color-green);
  font: 700 1.5rem var(--font-mono);
  cursor: pointer;
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s, background-color 0.2s, color 0.2s;
}

.top-button:hover {
  background: var(--color-green);
  border-color: var(--color-green);
  color: var(--color-bg);
}

.top-button[data-visible="true"] {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

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

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

@media (max-width: 1100px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 960px) {
  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    z-index: 799;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    margin-left: 0;
    padding: 16px 24px 24px;
    background: var(--color-deep);
    border-bottom: 1px solid var(--color-line);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
  }

  .nav-link {
    justify-content: flex-start;
    padding: 12px 14px;
  }

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

  .header-actions .btn {
    padding: 8px 14px;
    font-size: 0.8rem;
  }
}

@media (max-width: 992px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-item {
    grid-column: span 6;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 48px 0;
  }

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

@media (max-width: 640px) {
  .container {
    width: min(100% - 24px, 1360px);
  }

  .header-inner {
    gap: 12px;
  }

  .brand-name {
    font-size: 1.05rem;
  }

  .brand-sub {
    display: none;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 56px 0 32px;
  }

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

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

  .bento-card--feature {
    grid-column: auto;
    grid-row: auto;
    min-height: 240px;
  }

  .grid-item {
    grid-column: span 12;
  }

  .top-button {
    right: 16px;
    bottom: 16px;
  }
}

@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;
  }

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