:root {
  --bg: #070a0f;
  --bg-soft: #101820;
  --panel: rgba(255, 255, 255, 0.075);
  --panel-strong: rgba(255, 255, 255, 0.12);
  --text: #f4f7fb;
  --muted: #aeb9c8;
  --line: rgba(255, 255, 255, 0.16);
  --accent: #58f0b5;
  --accent-2: #ffcc66;
  --danger: #ff6b7a;
  --max: 1180px;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 78% 12%, rgba(88, 240, 181, 0.16), transparent 32rem),
    radial-gradient(circle at 18% 8%, rgba(255, 204, 102, 0.12), transparent 26rem),
    linear-gradient(180deg, #070a0f 0%, #0a1119 46%, #070a0f 100%);
  color: var(--text);
  font-family:
    "Microsoft YaHei",
    "PingFang SC",
    "Noto Sans SC",
    system-ui,
    -apple-system,
    sans-serif;
  letter-spacing: 0;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 3.25rem);
  background: rgba(7, 10, 15, 0.64);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(18px);
  transition: background 220ms ease, border-color 220ms ease;
}

.site-header.scrolled {
  background: rgba(7, 10, 15, 0.88);
  border-color: var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  min-width: max-content;
  font-size: 1rem;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  width: 2.35rem;
  height: 2.35rem;
  place-items: center;
  border: 1px solid rgba(88, 240, 181, 0.5);
  background: rgba(88, 240, 181, 0.12);
  color: var(--accent);
  font-size: 0.95rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.65rem, 2.4vw, 1.6rem);
  color: var(--muted);
  font-size: 0.92rem;
}

.site-nav a {
  position: relative;
  padding: 0.4rem 0;
  transition: color 180ms ease;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 0.08rem;
  left: 0;
  height: 1px;
  content: "";
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

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

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

.hero {
  position: relative;
  display: grid;
  min-height: 100svh;
  grid-template-columns: minmax(0, 0.95fr) minmax(22rem, 0.85fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 6rem);
  overflow: hidden;
  padding: 7.5rem clamp(1.2rem, 5vw, 5rem) 5rem;
  border-bottom: 1px solid var(--line);
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 4.5rem 4.5rem;
  mask-image: linear-gradient(90deg, black, transparent 78%);
}

.hero-content,
.lab-visual {
  position: relative;
  z-index: 1;
}

.eyebrow,
.section-kicker {
  margin: 0 0 1rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  max-width: 10ch;
  font-size: clamp(4.1rem, 12vw, 9.8rem);
  line-height: 0.92;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 40rem;
  margin: 1.6rem 0 0;
  color: #d3dae5;
  font-size: clamp(1.05rem, 2.2vw, 1.38rem);
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2.3rem;
}

.button {
  display: inline-flex;
  min-height: 2.9rem;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.1rem;
  border: 1px solid var(--line);
  font-weight: 800;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  border-color: rgba(88, 240, 181, 0.6);
  background: var(--accent);
  color: #06100c;
}

.button.ghost {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
}

.lab-visual {
  min-height: 32rem;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.13), rgba(255, 255, 255, 0.035)),
    rgba(10, 17, 25, 0.8);
  box-shadow: 0 2rem 5rem rgba(0, 0, 0, 0.4);
  animation: floatIn 780ms ease both;
}

.lab-toolbar {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 1rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem;
}

.lab-toolbar span {
  width: 0.62rem;
  height: 0.62rem;
  border-radius: 50%;
  background: var(--danger);
}

.lab-toolbar span:nth-child(2) {
  background: var(--accent-2);
}

.lab-toolbar span:nth-child(3) {
  background: var(--accent);
}

.lab-toolbar strong {
  margin-left: auto;
  color: #dce7f5;
  font-family: "Consolas", "SFMono-Regular", monospace;
  font-weight: 600;
}

.lab-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1rem;
  padding: 1rem;
}

.lab-grid pre {
  min-height: 18rem;
  grid-row: span 2;
  margin: 0;
  padding: 1rem;
  overflow: auto;
  border: 1px solid rgba(88, 240, 181, 0.18);
  background: rgba(0, 0, 0, 0.28);
  color: #d8fff0;
  font-family: "Consolas", "SFMono-Regular", monospace;
  font-size: 0.9rem;
  line-height: 1.75;
}

.game-preview {
  position: relative;
  display: grid;
  aspect-ratio: 1 / 1;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.55rem;
  padding: 0.75rem;
  border: 1px solid rgba(255, 204, 102, 0.22);
  background: rgba(255, 204, 102, 0.06);
}

.tile,
.player {
  min-width: 0;
  min-height: 0;
  background: rgba(255, 255, 255, 0.12);
}

.tile.hot {
  background: rgba(88, 240, 181, 0.32);
}

.player {
  box-shadow: 0 0 0 3px rgba(88, 240, 181, 0.22);
  background: var(--accent-2);
  animation: pulse 1.9s ease-in-out infinite;
}

.mini-panel {
  display: flex;
  min-height: 8.5rem;
  flex-direction: column;
  justify-content: center;
  gap: 0.45rem;
  padding: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.055);
}

.mini-panel span,
.mini-panel small {
  color: var(--muted);
}

.mini-panel strong {
  font-size: 2.2rem;
}

.focus-strip {
  display: grid;
  max-width: var(--max);
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 0 auto;
  padding: 0 clamp(1.2rem, 4vw, 2rem);
  transform: translateY(-2.2rem);
}

.focus-strip a {
  display: flex;
  min-height: 6.6rem;
  flex-direction: column;
  justify-content: center;
  gap: 0.6rem;
  padding: 1.2rem;
  border: 1px solid var(--line);
  background: rgba(16, 24, 32, 0.9);
  color: var(--text);
  font-weight: 800;
  transition: background 180ms ease, transform 180ms ease;
}

.focus-strip a:hover {
  background: rgba(88, 240, 181, 0.12);
  transform: translateY(-3px);
}

.focus-strip span {
  color: var(--accent);
  font-size: 0.8rem;
  font-family: "Consolas", "SFMono-Regular", monospace;
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3.5rem, 8vw, 6.5rem) clamp(1.2rem, 4vw, 2rem);
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(18rem, 1fr);
  gap: clamp(2rem, 7vw, 6rem);
  align-items: start;
  border-bottom: 1px solid var(--line);
}

.section h2 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 4.4rem);
  line-height: 1.06;
}

.intro > p,
.section-heading > p,
.closing p {
  margin: 0;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.9;
}

.tracks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  padding-top: 0;
}

.tracks article {
  min-height: 18rem;
  padding: 1.6rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.035);
  transition: background 180ms ease, transform 180ms ease;
}

.tracks article:hover {
  background: rgba(255, 255, 255, 0.07);
  transform: translateY(-4px);
}

.track-index {
  color: var(--accent);
  font-family: "Consolas", "SFMono-Regular", monospace;
  font-weight: 800;
}

.tracks h3,
.article-item h3 {
  margin: 1rem 0 0.75rem;
  font-size: clamp(1.25rem, 2.2vw, 1.7rem);
  line-height: 1.32;
}

.tracks p,
.article-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.articles {
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(18rem, 1fr);
  gap: clamp(1.6rem, 6vw, 5rem);
  align-items: end;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 2.4rem 0 1.4rem;
}

.filter-button {
  min-height: 2.45rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  padding: 0.56rem 0.86rem;
  transition: background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.filter-button:hover,
.filter-button.active {
  border-color: rgba(88, 240, 181, 0.5);
  background: rgba(88, 240, 181, 0.13);
  color: var(--text);
}

.article-list {
  border-top: 1px solid var(--line);
}

.article-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.5rem;
  align-items: center;
  padding: 1.45rem 0;
  border-bottom: 1px solid var(--line);
  transition: opacity 180ms ease, transform 180ms ease;
}

.article-item.is-hidden {
  display: none;
}

.article-tag {
  color: var(--accent-2);
  font-size: 0.8rem;
  font-weight: 800;
}

.article-item h3 {
  margin-top: 0.42rem;
}

.article-item a {
  display: inline-flex;
  min-width: 4.4rem;
  min-height: 2.5rem;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  color: var(--text);
  font-weight: 800;
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.article-item a:hover {
  border-color: rgba(88, 240, 181, 0.55);
  background: rgba(88, 240, 181, 0.12);
  transform: translateX(2px);
}

.closing {
  text-align: center;
}

.closing h2 {
  max-width: 12ch;
  margin: 0 auto 1rem;
}

.closing p {
  max-width: 38rem;
  margin: 0 auto 1.8rem;
}

.back-to-top {
  position: fixed;
  right: 1.2rem;
  bottom: 1.2rem;
  z-index: 30;
  display: grid;
  width: 2.75rem;
  height: 2.75rem;
  place-items: center;
  border: 1px solid rgba(88, 240, 181, 0.5);
  background: rgba(7, 10, 15, 0.84);
  color: var(--accent);
  cursor: pointer;
  font-size: 1.1rem;
  opacity: 0;
  pointer-events: none;
  transform: translateY(0.8rem);
  transition: opacity 180ms ease, transform 180ms ease;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem 1.2rem;
  padding: 1.7rem 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer a {
  color: #dce7f5;
}

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

[data-reveal] {
  opacity: 0;
  transform: translateY(1.2rem);
  transition: opacity 520ms ease, transform 520ms ease;
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(0.86);
  }
}

@keyframes floatIn {
  from {
    opacity: 0;
    transform: translateY(1.4rem) rotate(1deg);
  }

  to {
    opacity: 1;
    transform: translateY(0) rotate(0deg);
  }
}

@media (max-width: 900px) {
  .hero,
  .intro,
  .section-heading {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 7rem;
  }

  .hero h1 {
    max-width: none;
  }

  .lab-visual {
    min-height: auto;
  }

  .focus-strip,
  .tracks {
    grid-template-columns: 1fr;
  }

  .focus-strip {
    transform: none;
    padding-top: 1.2rem;
  }
}

@media (max-width: 680px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding: 0.85rem 1rem;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
    gap: 0.45rem;
    font-size: 0.84rem;
  }

  .hero {
    padding-top: 8.7rem;
  }

  .hero-actions,
  .filter-bar {
    align-items: stretch;
    flex-direction: column;
  }

  .button,
  .filter-button {
    width: 100%;
  }

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

  .lab-grid pre {
    min-height: 13rem;
    grid-row: auto;
    font-size: 0.78rem;
  }

  .article-item {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .article-item a {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}