:root {
  color-scheme: dark;
  --charcoal: #151311;
  --ink: #221d18;
  --panel: #2a241d;
  --panel-2: #332b22;
  --banana: #ffd24a;
  --banana-soft: #ffe8a3;
  --signal: #48d6b5;
  --danger: #ff6b4a;
  --cream: #fff7dc;
  --muted: #bcae95;
  --line: rgba(255, 247, 220, 0.18);
  --shadow: 0 26px 80px rgba(0, 0, 0, 0.35);
  font-family: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 8% 4%, rgba(255, 210, 74, 0.16), transparent 32rem),
    linear-gradient(135deg, #151311 0%, #201a15 45%, #101311 100%);
  color: var(--cream);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 247, 220, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 247, 220, 0.03) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, #000, transparent 72%);
  z-index: -1;
}

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

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 4px;
}

.skip-link {
  background: var(--banana);
  color: var(--ink);
  font-weight: 800;
  left: 1rem;
  padding: 0.75rem 1rem;
  position: fixed;
  top: -5rem;
  z-index: 20;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  align-items: center;
  backdrop-filter: blur(18px);
  background: rgba(21, 19, 17, 0.78);
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 1.5rem;
  justify-content: space-between;
  left: 0;
  padding: 0.85rem clamp(1rem, 4vw, 3rem);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  align-items: center;
  display: inline-flex;
  font-weight: 900;
  gap: 0.7rem;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  align-items: center;
  background: transparent;
  border: 0;
  border-radius: 0;
  display: inline-flex;
  height: 2.65rem;
  justify-content: center;
  overflow: visible;
  width: 3.35rem;
}

.brand-mark img {
  height: 100%;
  object-fit: contain;
  object-position: 50% 50%;
  width: 100%;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  justify-content: flex-end;
}

.nav a {
  border: 1px solid transparent;
  color: var(--muted);
  font-size: 0.92rem;
  padding: 0.55rem 0.75rem;
  text-decoration: none;
}

.nav a:hover {
  border-color: var(--line);
  color: var(--cream);
}

.language-picker {
  align-items: center;
  color: var(--muted);
  display: inline-flex;
  font-size: 0.85rem;
  font-weight: 800;
  gap: 0.55rem;
  white-space: nowrap;
}

.language-picker select {
  appearance: none;
  background:
    linear-gradient(45deg, transparent 50%, var(--banana) 50%) right 0.85rem center / 0.4rem 0.4rem no-repeat,
    linear-gradient(135deg, var(--banana) 50%, transparent 50%) right 0.6rem center / 0.4rem 0.4rem no-repeat,
    rgba(255, 247, 220, 0.08);
  border: 1px solid var(--line);
  color: var(--cream);
  font: inherit;
  min-height: 2.35rem;
  min-width: 8.5rem;
  padding: 0.45rem 1.6rem 0.45rem 0.7rem;
}

.language-picker option {
  background: var(--panel);
  color: var(--cream);
}

.hero {
  min-height: 82vh;
  overflow: hidden;
  padding: clamp(1.25rem, 3vw, 2.75rem) clamp(1rem, 4vw, 3rem) clamp(2.75rem, 6vw, 5rem);
  position: relative;
}

.hero-media {
  inset: 0;
  opacity: 0.55;
  position: absolute;
  z-index: -2;
}

.hero-media::after {
  background:
    linear-gradient(90deg, rgba(21, 19, 17, 0.74), rgba(21, 19, 17, 0.36) 54%, rgba(21, 19, 17, 0.56)),
    linear-gradient(0deg, rgba(21, 19, 17, 0.9), transparent 54%);
  content: "";
  inset: 0;
  position: absolute;
}

.hero-media img {
  height: 100%;
  object-fit: cover;
  width: 100%;
}

.hero-grid,
.news-strip,
.guide,
.roles,
.modules,
.media-band,
.specs,
.faq,
.sources {
  margin: 0 auto;
  max-width: 1180px;
}

.hero-grid {
  align-items: center;
  display: grid;
  gap: clamp(1.5rem, 4vw, 4rem);
  grid-template-columns: minmax(0, 1.05fr) minmax(290px, 0.55fr);
  min-height: calc(82vh - 5rem);
}

.eyebrow,
.section-kicker,
.step-code {
  color: var(--signal);
  font-family: "Roboto Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-family: "Arial Black", Impact, "Noto Sans SC", sans-serif;
  font-size: clamp(3.25rem, 10vw, 8.8rem);
  letter-spacing: 0;
  line-height: 0.9;
  margin-bottom: 1.2rem;
  max-width: 900px;
  text-transform: uppercase;
}

html[lang="zh-CN"] h1 {
  font-size: clamp(3rem, 7vw, 6.6rem);
  line-height: 0.96;
  max-width: 980px;
  overflow-wrap: normal;
  word-break: keep-all;
}

h2 {
  font-size: clamp(2rem, 5vw, 4.2rem);
  letter-spacing: 0;
  line-height: 1;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.25rem;
  line-height: 1.25;
  margin-bottom: 0.8rem;
}

.lede {
  color: #f6e9c7;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.75;
  max-width: 760px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2rem;
}

.button {
  border: 1px solid var(--line);
  display: inline-flex;
  font-weight: 900;
  justify-content: center;
  min-width: 9.5rem;
  padding: 0.95rem 1.1rem;
  text-decoration: none;
}

.button.primary {
  background: var(--banana);
  border-color: var(--banana);
  color: var(--ink);
}

.button.ghost {
  background: rgba(255, 247, 220, 0.06);
  color: var(--cream);
}

.signal-board {
  align-self: end;
  background: rgba(34, 29, 24, 0.88);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 1rem;
}

.status-line {
  align-items: center;
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  padding-bottom: 0.9rem;
}

.status-line span,
.quick-stats dt {
  color: var(--muted);
  font-size: 0.82rem;
}

.status-line strong {
  color: var(--banana);
}

.ticker {
  background: var(--ink);
  color: var(--signal);
  display: grid;
  font-family: "Roboto Mono", "SFMono-Regular", Consolas, monospace;
  gap: 0.35rem;
  margin: 1rem 0;
  overflow: hidden;
  padding: 0.9rem;
}

.ticker span {
  border-left: 3px solid var(--signal);
  padding-left: 0.6rem;
}

.quick-stats {
  display: grid;
  gap: 0.75rem;
  margin: 0;
}

.quick-stats div {
  align-items: center;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.quick-stats dd {
  font-weight: 800;
  margin: 0;
  text-align: right;
}

section {
  padding: clamp(3.5rem, 8vw, 7rem) clamp(1rem, 4vw, 3rem);
}

.section-heading {
  margin-bottom: 2rem;
  max-width: 780px;
}

.section-heading p:last-child,
.media-band > div > p,
.sources > div > p {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
}

.news-strip {
  border-bottom: 1px solid var(--line);
  border-top: 1px solid var(--line);
}

.intel-grid,
.spec-grid {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.intel-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

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

.intel-card,
.spec-grid article,
.role-card {
  background: rgba(255, 247, 220, 0.055);
  border: 1px solid var(--line);
  padding: 1.25rem;
}

.intel-card span {
  color: var(--banana);
  font-family: "Roboto Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 800;
}

.intel-card p,
.role-card p,
.role-card li,
.spec-grid p,
.faq p,
.sources p,
.sources li,
.panel p,
.runbook p {
  color: var(--muted);
  line-height: 1.7;
}

.runbook {
  counter-reset: steps;
  display: grid;
  gap: 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.runbook li {
  background:
    linear-gradient(90deg, rgba(255, 210, 74, 0.14), transparent),
    rgba(255, 247, 220, 0.045);
  border: 1px solid var(--line);
  display: grid;
  gap: 0.5rem;
  grid-template-columns: 8rem minmax(0, 1fr);
  padding: 1.1rem;
  position: relative;
}

.runbook li::before {
  color: rgba(255, 210, 74, 0.36);
  content: "0" counter(steps);
  counter-increment: steps;
  font-family: "Arial Black", Impact, sans-serif;
  font-size: 3.4rem;
  grid-row: span 2;
  line-height: 0.9;
}

.step-code {
  align-self: end;
}

.runbook h3,
.runbook p {
  grid-column: 2;
  margin-bottom: 0;
}

.role-layout {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.role-card {
  min-height: 100%;
}

.role-glyph {
  align-items: center;
  background: var(--banana);
  color: var(--ink);
  display: inline-flex;
  font-size: 1.35rem;
  font-weight: 900;
  height: 3.25rem;
  justify-content: center;
  margin-bottom: 1.25rem;
  width: 3.25rem;
}

.role-card.mute .role-glyph {
  background: var(--signal);
}

.role-card.deaf .role-glyph {
  background: var(--danger);
}

.role-card ul {
  border-top: 1px solid var(--line);
  margin: 1rem 0 0;
  padding: 1rem 0 0 1.2rem;
}

.module-console {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.console-top {
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem;
}

.tab {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  min-height: 2.75rem;
  padding: 0.65rem 1rem;
}

.tab.active {
  background: var(--banana);
  border-color: var(--banana);
  color: var(--ink);
}

.console-body {
  padding: clamp(1rem, 4vw, 2rem);
}

.panel {
  display: none;
}

.panel.active {
  display: block;
}

.callout {
  background: #15120f;
  border-left: 5px solid var(--signal);
  color: var(--cream) !important;
  font-family: "Roboto Mono", "SFMono-Regular", Consolas, monospace;
  padding: 1rem;
}

.media-band {
  display: grid;
  gap: 2rem;
  grid-template-columns: 0.52fr 1fr;
}

.screenshot-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(6, 1fr);
}

.screenshot-grid img {
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  object-fit: cover;
  width: 100%;
}

.screenshot-grid img:first-child {
  grid-column: span 6;
}

.screenshot-grid img:not(:first-child) {
  grid-column: span 3;
}

.faq details {
  background: rgba(255, 247, 220, 0.055);
  border: 1px solid var(--line);
  margin-bottom: 0.85rem;
  padding: 1rem 1.2rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 900;
}

.faq p {
  margin: 1rem 0 0;
}

.sources {
  align-items: start;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 2rem;
  grid-template-columns: 0.7fr 1fr;
}

.sources ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sources li {
  border-bottom: 1px solid var(--line);
}

.sources a {
  color: var(--banana-soft);
  display: block;
  padding: 1rem 0;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.25rem;
}

.site-footer {
  align-items: center;
  background: #100e0c;
  border-top: 1px solid var(--line);
  color: var(--muted);
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  padding: 1.25rem clamp(1rem, 4vw, 3rem);
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--banana);
  font-weight: 800;
}

@media (max-width: 920px) {
  .hero-grid,
  .media-band,
  .sources {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    align-items: start;
    min-height: auto;
  }

  .signal-board {
    align-self: start;
  }

  .intel-grid,
  .role-layout,
  .spec-grid {
    grid-template-columns: 1fr;
  }
}

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

  .nav {
    justify-content: flex-start;
  }

  .nav a {
    padding-inline: 0.5rem;
  }

  .hero {
    min-height: auto;
  }

  .runbook li {
    grid-template-columns: 1fr;
  }

  .runbook li::before,
  .runbook h3,
  .runbook p {
    grid-column: 1;
  }

  .console-top {
    overflow-x: auto;
  }

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

  .screenshot-grid img,
  .screenshot-grid img:first-child,
  .screenshot-grid img:not(:first-child) {
    grid-column: 1;
  }

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
  }
}