:root {
  --bg: #0a0b0e;
  --bg-raised: #101218;
  --panel: #13151c;
  --panel-2: #171a22;
  --line: rgba(255, 255, 255, 0.07);
  --line-strong: rgba(255, 255, 255, 0.13);
  --text: #e8eaf0;
  --text-dim: #9aa0ad;
  --text-faint: #5d6370;
  --accent: #4cc2ff;
  --accent-2: #3df2ad;
  --accent-3: #ff9640;
  --accent-4: #e44cff;
  --font-ui: 'Inter', ui-sans-serif, system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, Menlo, Consolas, monospace;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

::selection {
  background: rgba(76, 194, 255, 0.3);
}

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- nav ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(10, 11, 14, 0.75);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 60px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}
.nav-logo svg {
  display: block;
}
.nav-links {
  display: flex;
  gap: 4px;
  margin-left: auto;
}
.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 8px;
  transition: color 0.15s, background 0.15s;
}
.nav-links a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

/* ---- hero ---- */
.hero {
  padding: 84px 0 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: -40% -20% auto;
  height: 130%;
  background:
    radial-gradient(600px 300px at 30% 20%, rgba(76, 194, 255, 0.12), transparent 70%),
    radial-gradient(600px 300px at 70% 10%, rgba(228, 76, 255, 0.08), transparent 70%);
  pointer-events: none;
}
.hero h1 {
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  position: relative;
}
.hero h1 .grad {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p.tagline {
  margin: 18px auto 0;
  max-width: 640px;
  color: var(--text-dim);
  font-size: 17px;
  position: relative;
}
.hero .install {
  margin: 26px auto 0;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--panel);
  border: 1px solid var(--line-strong);
  padding: 10px 16px;
  border-radius: 10px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent-2);
  position: relative;
}
.hero .install button {
  background: none;
  border: none;
  color: var(--text-faint);
  cursor: pointer;
  font-size: 13px;
  padding: 2px 6px;
}
.hero .install button:hover {
  color: var(--text);
}

/* ---- rack panel (hero demo) ---- */
.rack {
  margin: 48px auto 0;
  max-width: 980px;
  border-radius: 16px;
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 40%),
    linear-gradient(180deg, #191b22, #101116);
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  padding: 30px 34px 24px;
  position: relative;
}
.rack-screws span {
  position: absolute;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #6a6d78, #23252c 75%);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.8);
}
.rack-screws span:nth-child(1) { top: 12px; left: 12px; }
.rack-screws span:nth-child(2) { top: 12px; right: 12px; }
.rack-screws span:nth-child(3) { bottom: 12px; left: 12px; }
.rack-screws span:nth-child(4) { bottom: 12px; right: 12px; }
.rack-row {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 34px;
  flex-wrap: wrap;
}
.rack-hint {
  margin-top: 18px;
  font-size: 12px;
  color: var(--text-faint);
  text-align: center;
}
.rack-hint kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  padding: 1px 5px;
}

/* ---- sections ---- */
section.block {
  padding: 72px 0 12px;
}
.section-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
h2.section-title {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 6px 0 8px;
}
.section-sub {
  color: var(--text-dim);
  max-width: 640px;
  margin-bottom: 34px;
}

/* ---- gallery ---- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 18px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
  transition: border-color 0.2s, transform 0.2s;
}
.card:hover {
  border-color: var(--line-strong);
}
.card h3 {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.card .card-desc {
  font-size: 13px;
  color: var(--text-dim);
  margin: 2px 0 18px;
}
.card .demo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  min-height: 130px;
  flex-wrap: wrap;
  border-radius: 10px;
  background:
    radial-gradient(400px 160px at 50% 0%, rgba(255, 255, 255, 0.03), transparent),
    var(--bg-raised);
  border: 1px solid var(--line);
  padding: 18px 10px;
}
.card .tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-faint);
  background: rgba(255, 255, 255, 0.05);
  padding: 2px 8px;
  border-radius: 999px;
  margin-top: 14px;
}

/* ---- console demo ---- */
.console {
  border-radius: 16px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(180deg, #16181f, #0e0f14);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  padding: 26px;
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}
.channel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 18px 18px 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--line);
  min-width: 128px;
}
.channel .ch-name {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  text-transform: uppercase;
}

/* ---- playground ---- */
.playground {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 18px;
  align-items: start;
}
@media (max-width: 860px) {
  .playground {
    grid-template-columns: 1fr;
  }
}
.controls {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: sticky;
  top: 76px;
}
.control {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.control > label {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.control input[type='text'],
.control input[type='number'],
.control select {
  background: var(--bg-raised);
  border: 1px solid var(--line-strong);
  color: var(--text);
  border-radius: 8px;
  padding: 7px 10px;
  font-size: 13.5px;
  font-family: var(--font-mono);
  outline: none;
  width: 100%;
}
.control input:focus,
.control select:focus {
  border-color: var(--accent);
}
.control-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.control input[type='range'] {
  accent-color: var(--accent);
}
.control input[type='color'] {
  width: 100%;
  height: 32px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--bg-raised);
  padding: 3px;
  cursor: pointer;
}
.control .check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
  text-transform: none;
  letter-spacing: 0;
}
.stage {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.preview {
  background:
    radial-gradient(500px 240px at 50% 10%, rgba(76, 194, 255, 0.05), transparent),
    var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 30px;
}
.readout {
  display: flex;
  gap: 20px;
  justify-content: center;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-faint);
}
.readout b {
  color: var(--accent-2);
  font-weight: 500;
}

/* ---- code ---- */
.codeblock {
  position: relative;
  background: #0d0e12;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: auto;
}
.codeblock pre {
  padding: 18px 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.65;
  color: #c8cede;
  white-space: pre;
}
.codeblock .copy {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line-strong);
  color: var(--text-dim);
  font-size: 12px;
  border-radius: 7px;
  padding: 4px 10px;
  cursor: pointer;
}
.codeblock .copy:hover {
  color: var(--text);
}
.tok-key { color: #7dd3fc; }
.tok-str { color: #86efac; }
.tok-num { color: #fca5a5; }
.tok-tag { color: #c4b5fd; }
.tok-com { color: #565d6b; font-style: italic; }

/* ---- docs / api ---- */
.api-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  margin: 14px 0 30px;
}
.api-table th {
  text-align: left;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  padding: 8px 12px;
  border-bottom: 1px solid var(--line-strong);
}
.api-table td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  color: var(--text-dim);
}
.api-table td:first-child {
  font-family: var(--font-mono);
  color: var(--accent);
  white-space: nowrap;
  font-size: 12.5px;
}
.api-table td:nth-child(2) {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent-3);
}
.api-table code,
.prose code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: rgba(255, 255, 255, 0.06);
  padding: 1px 5px;
  border-radius: 4px;
}
h3.api-h {
  font-size: 19px;
  font-weight: 700;
  margin: 38px 0 4px;
  letter-spacing: -0.01em;
}
.api-note {
  font-size: 13.5px;
  color: var(--text-dim);
  max-width: 720px;
}

.footer {
  margin-top: 80px;
  border-top: 1px solid var(--line);
  padding: 30px 0 40px;
  color: var(--text-faint);
  font-size: 13px;
  text-align: center;
}
.footer a {
  color: var(--text-dim);
}