/* =========================================================================
   VEXPOLY
   ========================================================================= */

@property --accent {
  syntax: '<color>';
  inherits: true;
  initial-value: #8EF4FF;
}
@property --bg {
  syntax: '<color>';
  inherits: true;
  initial-value: #0A0A0B;
}

:root {
  --bg:      #0A0A0B;
  --surface: #121216;
  --surface2:#191920;
  --line:    #232328;
  --line-2:  #2E2E34;
  --text:    #ECECEF;
  --muted:   #8B8B95;
  --dim:     #56565E;
  --accent:  #8EF4FF;
  --accent-soft: color-mix(in srgb, var(--accent) 22%, transparent);
  --accent-ink:  color-mix(in srgb, var(--accent) 12%, transparent);

  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;

  --max: 1240px;
  --pad: 32px;
  --radius: 14px;
  --radius-lg: 22px;

  --ease: cubic-bezier(.16, 1, .3, 1);
  --ease-2: cubic-bezier(.4, 0, .2, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: --accent 0.5s ease, --bg 0.5s ease;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  overflow-x: hidden;
  font-feature-settings: "ss01", "cv11", "cv02";
  transition: background-color 0.5s var(--ease);
}

body.nav-open { overflow: hidden; }

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

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

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

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--bg);
  padding: 12px 18px;
  z-index: 200;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 0 0 8px 0;
}
.skip:focus { left: 0; }

/* ----------------------------------------------------------- grain -- */

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ------------------------------------------------------- progress --- */

.progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: transparent;
  z-index: 100;
  pointer-events: none;
}
.progress span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  transition: width 0.05s linear;
}

/* =============================================================== bar */

.bar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 76%, transparent);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
}

.bar-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad);
  display: flex;
  align-items: center;
  gap: 40px;
  height: 72px;
}

.mark {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  font-weight: 700;
  text-transform: uppercase;
  flex-shrink: 0;
  transition: color 0.3s var(--ease);
}
.mark span { color: var(--text); }

.nav {
  display: flex;
  gap: 6px;
  margin-left: auto;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  font-weight: 500;
  color: var(--muted);
}

.nav a {
  position: relative;
  padding: 8px 14px;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}
.nav a:hover { color: var(--text); }
.nav a.active { color: var(--text); background: color-mix(in srgb, var(--accent) 9%, transparent); }
.nav a.active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 4px; height: 4px;
  margin-left: -2px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.bar-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 38px;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  transition: all 0.2s var(--ease);
  white-space: nowrap;
}

.pill-ghost {
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
}

.pill-solid {
  background: var(--accent);
  color: var(--bg);
}
.pill-solid:hover { filter: brightness(1.1); transform: translateY(-1px); }

.menu {
  display: none;
  width: 42px;
  height: 42px;
  background: none;
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
  padding: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  color: var(--text);
}
.menu span {
  display: block;
  width: 16px;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.25s var(--ease);
}

/* ============================================================== hero */

.hero {
  position: relative;
  padding: 120px 0 80px;
  overflow: hidden;
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.hero-mesh {
  position: absolute;
  inset: -30% -20% auto -20%;
  height: 900px;
  background:
    radial-gradient(ellipse 55% 45% at 50% 10%, var(--accent-soft), transparent 65%),
    radial-gradient(ellipse 40% 40% at 15% 30%, rgba(168,85,247,0.14), transparent 70%),
    radial-gradient(ellipse 40% 40% at 85% 30%, rgba(184,255,61,0.10), transparent 70%),
    radial-gradient(ellipse 60% 50% at 50% 50%, color-mix(in srgb, var(--accent) 6%, transparent), transparent 70%);
  filter: blur(24px);
  animation: meshDrift 22s ease-in-out infinite alternate;
}

@keyframes meshDrift {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(-2%, 3%, 0) scale(1.08); }
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(color-mix(in srgb, var(--accent) 5%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 5%, transparent) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, black 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, black 20%, transparent 80%);
  opacity: 0.6;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 30px;
  font-size: 0.7rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--muted);
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.55; transform: scale(0.85); }
}

.hero-title {
  margin: 0 0 32px;
  font-size: clamp(3.2rem, 10vw, 8rem);
  font-weight: 800;
  letter-spacing: -0.055em;
  line-height: 0.88;
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hero-title .line {
  display: block;
  background: linear-gradient(180deg, var(--text) 0%, color-mix(in srgb, var(--text) 65%, var(--bg)) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-title .outline {
  -webkit-text-stroke: 2px var(--accent);
  text-stroke: 2px var(--accent);
  color: transparent;
  background: none;
  -webkit-background-clip: initial;
  background-clip: initial;
  text-shadow: 0 0 60px var(--accent-soft);
}

.hero-lede {
  margin: 0 0 44px;
  max-width: 62ch;
  font-size: clamp(1rem, 1.4vw, 1.18rem);
  color: var(--muted);
  line-height: 1.65;
}

.hero-lede code {
  font-family: var(--mono);
  font-size: 0.88em;
  color: var(--accent);
  background: var(--accent-ink);
  padding: 2px 7px;
  border-radius: 5px;
}

.hero-ctas {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 64px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 52px;
  padding: 0 28px;
  border-radius: 999px;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.22s var(--ease);
  font-family: inherit;
  white-space: nowrap;
}

.btn-solid {
  background: var(--accent);
  color: var(--bg);
  box-shadow: 0 12px 40px -12px var(--accent-soft);
}
.btn-solid:hover { transform: translateY(-2px); filter: brightness(1.08); box-shadow: 0 20px 50px -12px var(--accent-soft); }

.btn-ghost {
  border-color: var(--line-2);
  color: var(--text);
  background: transparent;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* -------------------------------------------------------- install --- */

.install {
  width: 100%;
  max-width: 680px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  text-align: left;
  margin: 0 auto;
  box-shadow: 0 40px 100px -40px rgba(0,0,0,0.8);
  transition: border-color 0.3s var(--ease);
}
.install:hover { border-color: var(--line-2); }

.install-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--surface2);
}

.install-dots { display: flex; gap: 6px; }
.install-dots i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  display: block;
}
.install-dots i:nth-child(1) { background: #FF5F56; }
.install-dots i:nth-child(2) { background: #FFBD2E; }
.install-dots i:nth-child(3) { background: #27C93F; }

.install-title {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--dim);
  letter-spacing: 0.06em;
}

.copy {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: all 0.18s var(--ease);
}
.copy:hover { color: var(--text); border-color: var(--muted); }
.copy.done { color: var(--accent); border-color: var(--accent); background: var(--accent-ink); }
.copy::before {
  content: "";
  width: 8px; height: 8px;
  border: 1.5px solid currentColor;
  border-radius: 2px;
  position: relative;
  transition: all 0.18s var(--ease);
}
.copy.done::before { border-radius: 50%; background: currentColor; }

.install pre {
  margin: 0;
  padding: 22px 26px;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 2;
  color: #C9C9CE;
  overflow-x: auto;
}

.install code { background: none; padding: 0; font-size: inherit; color: inherit; }
.install .p { color: var(--accent); margin-right: 10px; user-select: none; }

.hero-note {
  margin: 22px 0 0;
  font-size: 0.82rem;
  color: var(--dim);
  letter-spacing: 0.01em;
}
.hero-note code {
  font-family: var(--mono);
  font-size: 0.92em;
  color: var(--muted);
  background: var(--surface);
  padding: 2px 6px;
  border-radius: 4px;
}

/* =============================================================== fx */

.fx {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: var(--s);
  height: var(--s);
  transform: rotate(var(--r));
  animation: float var(--d) ease-in-out infinite;
  opacity: 0.85;
  pointer-events: none;
}

.fx.coin {
  border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, #FFE9A8, #E0A93B 55%, #9A6B12 100%);
  box-shadow:
    inset 0 0 0 4px rgba(255,255,255,0.22),
    0 12px 30px rgba(0,0,0,0.35);
}
.fx.coin::after {
  content: "";
  position: absolute;
  inset: 26%;
  border-radius: 50%;
  border: 2px solid rgba(120,70,10,0.55);
}

.fx.chip {
  border-radius: 14px;
  background: linear-gradient(150deg, #6EE7FF, #A855F7 55%, #4C1D95);
  box-shadow: 0 14px 34px rgba(0,0,0,0.4);
  transform: rotate(var(--r)) skewY(-4deg);
}
.fx.chip::after {
  content: "";
  position: absolute;
  inset: 22%;
  border-radius: 8px;
  background: rgba(255,255,255,0.22);
}

.fx.poly {
  background: var(--accent);
  clip-path: polygon(50% 0%, 100% 38%, 82% 100%, 18% 100%, 0% 38%);
  box-shadow: 0 12px 30px var(--accent-soft);
}

.fx.dot {
  border-radius: 50%;
  background: #B8FF3D;
  box-shadow: 0 0 20px #B8FF3D;
  opacity: 0.75;
}

@keyframes float {
  0%, 100% { transform: rotate(var(--r)) translateY(0); }
  50%      { transform: rotate(calc(var(--r) + 6deg)) translateY(-20px); }
}

/* ============================================================ stats */

.stats {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 56px 0;
  background: color-mix(in srgb, var(--surface) 40%, transparent);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 0 24px;
  border-left: 1px solid var(--line);
}
.stat:first-child { border-left: none; padding-left: 0; }

.stat-value {
  font-family: var(--mono);
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1;
}

.stat-label {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
  font-weight: 500;
}

/* ========================================================= sections */

.section { padding: 128px 0; position: relative; }
.section-pipeline { background: color-mix(in srgb, var(--surface) 35%, transparent); }
.section-support {
  background:
    radial-gradient(ellipse 60% 80% at 50% 100%, var(--accent-ink), transparent 70%);
}

.section-head {
  max-width: 720px;
  margin: 0 auto 72px;
  text-align: center;
}

.section-head .eyebrow { justify-content: center; }

.display {
  margin: 0 0 22px;
  font-size: clamp(2rem, 5.6vw, 4.4rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 0.98;
  text-transform: uppercase;
}
.display .dim { color: var(--dim); }
.display-center { text-align: center; }

.section-lede {
  max-width: 62ch;
  margin: 0 0 0;
  font-size: clamp(1rem, 1.3vw, 1.1rem);
  color: var(--muted);
  line-height: 1.65;
}
.section-lede-center { margin: 0 auto; text-align: center; }

.center-row { text-align: center; margin: 56px 0 0; }
.row-center {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 0;
}

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 5px;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid var(--accent-soft);
  transition: border-color 0.2s;
}
.arrow-link:hover { border-color: var(--accent); }
.arrow-link span { transition: transform 0.2s var(--ease); }
.arrow-link:hover span { transform: translate(3px, -3px); }

/* ========================================================= renderer */

.renderer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.demo {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #07070A;
  box-shadow: 0 60px 120px -50px rgba(0,0,0,0.9),
              0 0 0 1px color-mix(in srgb, var(--accent) 6%, transparent) inset;
}

.demo-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 60%, transparent);
}

.demo-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}

.demo-title {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}

.demo-hint {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--dim);
}

#scene {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 900 / 580;
  cursor: grab;
  touch-action: none;
  user-select: none;
}
#scene:active { cursor: grabbing; }

.demo-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 60%, transparent);
  flex-wrap: wrap;
}

.ctl {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 13px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: all 0.18s var(--ease);
  text-transform: lowercase;
}
.ctl:hover { color: var(--text); border-color: var(--line-2); }
.ctl[aria-pressed="true"] {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
  background: var(--accent-ink);
}

.ctl-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--dim);
  transition: background 0.18s, box-shadow 0.18s;
}
.ctl[aria-pressed="true"] .ctl-dot {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.demo-stats {
  margin-left: auto;
  display: flex;
  gap: 14px;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--dim);
  letter-spacing: 0.06em;
}

.renderer-side {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.side-card {
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 50%, transparent);
  transition: border-color 0.2s var(--ease), transform 0.3s var(--ease);
}
.side-card:hover { border-color: var(--line-2); transform: translateX(4px); }

.side-num {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.side-card h3 {
  margin: 8px 0 8px;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.side-card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ========================================================== bento == */

.bento {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.bcard {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 260px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--surface) 45%, transparent);
  overflow: hidden;
  transition: border-color 0.25s var(--ease), transform 0.4s var(--ease);
}
.bcard:hover { border-color: var(--line-2); transform: translateY(-4px); }

.bcard-wide { grid-column: span 2; }
.bcard-tall { grid-row: span 2; min-height: 100%; }

.bcard-viz {
  position: relative;
  flex: 1;
  min-height: 140px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 100%, var(--accent-ink), transparent 70%),
    #0A0A0D;
}

.bcard-body {
  padding: 22px 24px 26px;
}

.bcard-num {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 8px;
}

.bcard-body h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.bcard-body p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.6;
}

.bcard-body code {
  font-family: var(--mono);
  font-size: 0.85em;
  color: var(--accent);
  background: var(--accent-ink);
  padding: 1px 5px;
  border-radius: 4px;
}

/* viz: camera */
.viz-camera { display: grid; place-items: center; perspective: 700px; }
.wire-cube {
  position: relative;
  width: 90px;
  height: 90px;
  transform-style: preserve-3d;
  animation: spinCube 12s linear infinite;
}
.wire-cube span {
  position: absolute;
  inset: 0;
  border: 1.5px solid var(--accent);
  opacity: 0.55;
  box-shadow: 0 0 20px var(--accent-soft);
}
.wire-cube span:nth-child(1) { transform: translateZ(45px); }
.wire-cube span:nth-child(2) { transform: rotateY(180deg) translateZ(45px); }
.wire-cube span:nth-child(3) { transform: rotateY(90deg) translateZ(45px); }
.wire-cube span:nth-child(4) { transform: rotateY(-90deg) translateZ(45px); }
.wire-cube span:nth-child(5) { transform: rotateX(90deg) translateZ(45px); }
.wire-cube span:nth-child(6) { transform: rotateX(-90deg) translateZ(45px); }
.wire-cube span:nth-child(7),
.wire-cube span:nth-child(8) { display: none; }

@keyframes spinCube {
  from { transform: rotateX(-20deg) rotateY(0deg); }
  to   { transform: rotateX(-20deg) rotateY(360deg); }
}

/* viz: clip */
.viz-clip { display: grid; place-items: center; }
.clip-line {
  position: absolute;
  left: 12%;
  right: 12%;
  top: 50%;
  height: 2px;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  transform: translateY(-50%);
  animation: clipSlide 4s var(--ease-2) infinite;
}
.clip-window {
  position: absolute;
  top: 24%;
  bottom: 24%;
  left: 44%;
  width: 2px;
  background: rgba(255,255,255,0.18);
  animation: clipWindow 4s var(--ease-2) infinite;
}
@keyframes clipSlide {
  0%, 100% { clip-path: inset(0 55% 0 0); }
  50%      { clip-path: inset(0 0 0 55%); }
}
@keyframes clipWindow {
  0%, 100% { left: 44%; }
  50%      { left: 56%; }
}

/* viz: cull */
.viz-cull {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 8px;
  padding: 22px;
  place-items: stretch;
}
.viz-cull span {
  border-radius: 6px;
  background: var(--accent-ink);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  animation: cullPulse 3s ease-in-out infinite;
}
.viz-cull span:nth-child(2) { animation-delay: 0.4s; background: transparent; border-style: dashed; }
.viz-cull span:nth-child(3) { animation-delay: 0.8s; background: transparent; border-style: dashed; }
.viz-cull span:nth-child(4) { animation-delay: 1.2s; }
@keyframes cullPulse {
  0%, 100% { opacity: 0.35; }
  50%      { opacity: 1; }
}

/* viz: light */
.viz-light {
  background:
    radial-gradient(circle at 65% 30%, rgba(255,255,255,0.9) 0%, transparent 12%),
    radial-gradient(circle at 50% 55%, color-mix(in srgb, var(--accent) 55%, transparent), transparent 55%),
    radial-gradient(circle at 50% 55%, #06060A 0%, #06060A 100%);
}
.viz-light::after {
  content: "";
  position: absolute;
  inset: 30% 30% 20% 30%;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 30%, #FFFFFF 0%, color-mix(in srgb, var(--accent) 70%, transparent) 30%, rgba(0,0,0,0.6) 90%);
  box-shadow: 0 0 60px var(--accent-soft);
}

/* viz: fog */
.viz-fog {
  background: linear-gradient(180deg,
    transparent 0%,
    color-mix(in srgb, var(--accent) 40%, transparent) 100%);
}
.viz-fog::before,
.viz-fog::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  height: 1px;
  background: rgba(255,255,255,0.15);
}
.viz-fog::before { top: 33%; }
.viz-fog::after  { top: 66%; }
.viz-fog span { display: none; }

/* viz: sort */
.viz-sort {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 10px;
  padding: 32px 24px 24px;
}
.viz-sort span {
  width: 36px;
  border-radius: 6px 6px 2px 2px;
  background: linear-gradient(180deg, var(--accent), color-mix(in srgb, var(--accent) 40%, transparent));
  animation: sortBar 3.6s var(--ease) infinite;
}
.viz-sort span:nth-child(1) { height: 40%; animation-delay: 0s; }
.viz-sort span:nth-child(2) { height: 65%; animation-delay: 0.15s; }
.viz-sort span:nth-child(3) { height: 90%; animation-delay: 0.30s; }
.viz-sort span:nth-child(4) { height: 55%; animation-delay: 0.45s; }
.viz-sort span:nth-child(5) { height: 78%; animation-delay: 0.60s; }

@keyframes sortBar {
  0%, 100% { transform: translateY(0) scaleY(1); }
  50%      { transform: translateY(-10px) scaleY(1.08); }
}

/* ========================================================= themes == */

.theme-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.theme {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  padding: 12px;
  background: color-mix(in srgb, var(--surface) 50%, transparent);
  border: 2px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: inherit;
  transition: all 0.25s var(--ease);
  text-align: left;
}

.theme:hover {
  background: color-mix(in srgb, var(--surface) 80%, transparent);
  transform: translateY(-3px);
}

.theme[aria-pressed="true"] {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ink), 0 20px 40px -20px var(--accent-soft);
}

.swatch {
  display: block;
  height: 110px;
  border-radius: 10px;
  background: linear-gradient(150deg,
    var(--a) 0%,
    color-mix(in srgb, var(--a) 30%, var(--b)) 55%,
    var(--c) 100%);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.08);
  position: relative;
  overflow: hidden;
}

.swatch::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,0.25) 100%);
}

.theme-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 4px 4px;
}

.theme-name {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.theme-desc {
  font-size: 0.72rem;
  color: var(--dim);
  letter-spacing: 0.02em;
}

/* ======================================================== controls == */

.controls-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 56px;
  align-items: start;
}

.keyboard {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 36px 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--surface) 55%, transparent);
  align-items: flex-start;
}

.krow {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.krow-label {
  margin-left: 16px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
}

kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  background: linear-gradient(180deg, var(--surface2), var(--surface));
  border: 1px solid var(--line-2);
  border-bottom-width: 3px;
  border-radius: 9px;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text);
  letter-spacing: 0.04em;
  transition: all 0.15s var(--ease);
  box-shadow: 0 4px 0 rgba(0,0,0,0.4);
}
kbd.wide { min-width: 80px; }
kbd:hover { transform: translateY(1px); box-shadow: 0 2px 0 rgba(0,0,0,0.4); }

.controls-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--surface) 55%, transparent);
  overflow: hidden;
}

.controls-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
}
.controls-list li:last-child { border-bottom: none; }

.controls-list span:first-child { color: var(--muted); }

.kbd-inline { display: flex; gap: 6px; }
.kbd-inline kbd {
  min-width: 30px;
  height: 30px;
  padding: 0 10px;
  font-size: 0.7rem;
  border-bottom-width: 2px;
  box-shadow: 0 2px 0 rgba(0,0,0,0.4);
}

/* ========================================================= updates == */

.log {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.log li {
  display: grid;
  grid-template-columns: 130px 130px 1fr;
  gap: 24px;
  align-items: baseline;
  padding: 24px 8px;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s;
  position: relative;
}
.log li:hover { background: color-mix(in srgb, var(--accent) 4%, transparent); }
.log li:hover .log-title { color: var(--accent); }

.log-date {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--dim);
  letter-spacing: 0.04em;
}

.log-tag {
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--muted);
}

.tag-release { color: var(--accent); }

.log-title {
  font-size: 0.98rem;
  color: var(--text);
  transition: color 0.18s;
}

/* ========================================================= support == */

.support-inner { text-align: center; }

/* =========================================================== foot == */

.foot {
  background: color-mix(in srgb, var(--surface) 40%, var(--bg));
  border-top: 1px solid var(--line);
  padding: 88px 0 40px;
  position: relative;
}

.foot-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 56px;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--line);
}

.foot-brand .mark { color: var(--accent); margin-bottom: 18px; }

.foot-note {
  margin: 0;
  font-size: 0.88rem;
  color: var(--dim);
  max-width: 36ch;
  line-height: 1.65;
}

.foot-col h4 {
  margin: 0 0 18px;
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--muted);
}

.foot-col a {
  display: block;
  padding: 7px 0;
  font-size: 0.9rem;
  color: var(--dim);
  transition: color 0.15s;
}
.foot-col a:hover { color: var(--text); }

.foot-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 32px;
  font-size: 0.78rem;
  color: var(--dim);
}

.foot-bottom-right {
  display: inline-flex;
  align-items: center;
  gap: 24px;
}

.totop { color: var(--dim); transition: color 0.15s; }
.totop:hover { color: var(--accent); }

.ver { font-family: var(--mono); letter-spacing: 0.06em; }

/* ========================================================== reveal == */

[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.9s var(--ease) var(--delay, 0s),
    transform 0.9s var(--ease) var(--delay, 0s);
  will-change: opacity, transform;
}
[data-reveal].in {
  opacity: 1;
  transform: none;
}

/* ======================================================== responsive */

@media (max-width: 1100px) {
  .renderer-grid { grid-template-columns: 1fr; }
  .renderer-side { flex-direction: row; flex-wrap: wrap; }
  .side-card { flex: 1 1 240px; }

  .bento { grid-template-columns: repeat(2, 1fr); }
  .bcard-wide { grid-column: span 2; }
  .bcard-tall { grid-row: auto; }

  .controls-grid { grid-template-columns: 1fr; gap: 32px; }

  .foot-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 900px) {
  .nav {
    position: fixed;
    inset: 72px 0 auto 0;
    flex-direction: column;
    gap: 0;
    margin: 0;
    padding: 12px 0 24px;
    background: color-mix(in srgb, var(--bg) 96%, transparent);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
    font-size: 0.86rem;
    transform: translateY(-120%);
    transition: transform 0.32s var(--ease);
    z-index: 40;
  }
  .nav a {
    padding: 18px var(--pad);
    border-radius: 0;
    border-bottom: 1px solid var(--line);
  }
  .nav a.active { background: transparent; color: var(--accent); }
  .nav a.active::after { display: none; }
  body.nav-open .nav { transform: none; }

  .pill-ghost { display: none; }
  .menu { display: flex; }
  body.nav-open .menu span:nth-child(1) { transform: translateY(3.25px) rotate(45deg); }
  body.nav-open .menu span:nth-child(2) { transform: translateY(-3.25px) rotate(-45deg); }

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

@media (max-width: 720px) {
  :root { --pad: 20px; }
  body { font-size: 16px; }

  .hero { padding: 72px 0 56px; }
  .section { padding: 88px 0; }

  .hero-ctas { width: 100%; }
  .hero-ctas .btn { flex: 1; }

  .stats-grid { grid-template-columns: 1fr 1fr; gap: 32px 20px; }
  .stat { padding: 0; border-left: none; }
  .stat:nth-child(odd) { padding-right: 10px; }
  .stat:nth-child(even) { padding-left: 20px; border-left: 1px solid var(--line); }

  .bento { grid-template-columns: 1fr; }
  .bcard-wide { grid-column: auto; }

  .theme-grid { grid-template-columns: repeat(2, 1fr); }
  .theme-grid li:last-child { grid-column: span 2; }

  .log li { grid-template-columns: 1fr; gap: 6px; padding: 20px 4px; }
  .log-date { order: 2; }
  .log-tag  { order: 1; }
  .log-title { order: 3; font-size: 0.94rem; }

  .foot-grid { grid-template-columns: 1fr; gap: 32px; }
  .foot-bottom { flex-direction: column; align-items: flex-start; }

  .controls-list li { padding: 14px 18px; }
  .keyboard { padding: 24px 20px; }
  kbd { min-width: 36px; height: 36px; }
}

@media (max-width: 420px) {
  .hero-title { font-size: clamp(2.4rem, 13vw, 3.4rem); }
  .install pre { font-size: 0.72rem; padding: 18px 20px; }
  .fx { display: none; }
  .demo-stats { width: 100%; margin-left: 0; margin-top: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1 !important; transform: none !important; transition: none !important; }
  .fx, .hero-mesh, .wire-cube, .clip-line, .clip-window, .viz-cull span,
  .viz-sort span, .demo-dot, .dot { animation: none !important; }
}