:root {
  --void: #05070f;
  --deep: #0d1229;
  --panel: rgba(255, 255, 255, 0.045);
  --panel-strong: rgba(255, 255, 255, 0.08);
  --line: rgba(255, 255, 255, 0.1);
  --text: #ffffff;
  --text-dim: rgba(255, 255, 255, 0.62);
  --text-faint: rgba(255, 255, 255, 0.4);
  --cyan: #3de8ff;
  --violet: #8c3dff;
  --green: #29ff8f;
  --red: #ff385c;
  --radius: 22px;
  --max: 1160px;
  --font: ui-rounded, "SF Pro Rounded", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: dark;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background: var(--void);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.55;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button { font: inherit; color: inherit; }

/* ---------- ambient background ---------- */

.backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: linear-gradient(var(--deep), var(--void) 70%);
  overflow: hidden;
  pointer-events: none;
}
.backdrop::before,
.backdrop::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  animation: drift 18s ease-in-out infinite alternate;
}
.backdrop::before {
  width: 60vmax; height: 60vmax;
  left: -20vmax; top: -25vmax;
  background: rgba(61, 232, 255, 0.18);
}
.backdrop::after {
  width: 65vmax; height: 65vmax;
  right: -25vmax; bottom: -30vmax;
  background: rgba(140, 61, 255, 0.22);
  animation-delay: -9s;
}
.grid-floor {
  position: absolute;
  left: -50%; right: -50%; bottom: 0;
  height: 45vh;
  background-image:
    linear-gradient(rgba(61, 232, 255, 0.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(61, 232, 255, 0.22) 1px, transparent 1px);
  background-size: 80px 80px;
  transform: perspective(400px) rotateX(62deg);
  transform-origin: bottom;
  -webkit-mask-image: linear-gradient(transparent, #000 80%);
  mask-image: linear-gradient(transparent, #000 80%);
}
@keyframes drift {
  to { transform: translate(6vmax, 4vmax) scale(1.08); }
}

/* ---------- layout ---------- */

.wrap { width: min(var(--max), 100% - 32px); margin-inline: auto; }

section { padding: 96px 0; }

.kicker {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--cyan);
}

h1, h2, h3 { line-height: 1.08; letter-spacing: -0.02em; font-weight: 850; }
h1 { font-size: clamp(44px, 7vw, 84px); }
h2 { font-size: clamp(34px, 4.6vw, 54px); }
h3 { font-size: 21px; letter-spacing: -0.01em; }

.grad {
  background: linear-gradient(90deg, var(--green), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede { font-size: clamp(18px, 2vw, 21px); color: var(--text-dim); max-width: 34em; }

.section-head { text-align: center; margin-bottom: 56px; }
.section-head .kicker { margin-bottom: 16px; }
.section-head .lede { margin: 18px auto 0; }

.glass {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

/* ---------- nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(5, 7, 15, 0.6);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  backdrop-filter: blur(18px) saturate(1.4);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; gap: 24px; height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; font-weight: 800; font-size: 18px; }
.brand img { width: 36px; height: 36px; border-radius: 9px; }
.nav-links { display: flex; gap: 28px; margin-left: auto; list-style: none; }
.nav-links a { text-decoration: none; color: var(--text-dim); font-size: 15px; font-weight: 600; transition: color 0.2s; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 54px;
  padding: 0 26px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel-strong);
  text-decoration: none;
  font-weight: 800;
  font-size: 16px;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.25s ease, background 0.2s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0) scale(0.98); }
.btn:focus-visible, .die-btn:focus-visible, a:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
.btn-primary {
  border: 0;
  color: var(--void);
  background: linear-gradient(90deg, var(--green), var(--cyan));
  box-shadow: 0 0 28px rgba(41, 255, 143, 0.35);
}
.btn-primary:hover { box-shadow: 0 0 44px rgba(61, 232, 255, 0.55); }
.btn-sm { height: 42px; padding: 0 18px; font-size: 14px; }
.btn svg { width: 20px; height: 20px; flex: none; }
.btn .store-text { display: flex; flex-direction: column; line-height: 1.05; text-align: left; }
.btn .store-text small { font-size: 10px; font-weight: 700; letter-spacing: 0.06em; opacity: 0.75; }

/* ---------- dice ---------- */

.die {
  --t: var(--green);
  --s: 80px;
  position: relative;
  width: var(--s);
  height: var(--s);
  flex: none;
  border-radius: 24%;
  border: max(2px, calc(var(--s) * 0.022)) solid var(--t);
  background: linear-gradient(135deg, color-mix(in srgb, var(--t) 36%, transparent), rgba(5, 8, 15, 0.95) 90%);
  box-shadow:
    0 0 calc(var(--s) * 0.22) color-mix(in srgb, var(--t) 55%, transparent),
    inset 0 0 calc(var(--s) * 0.12) color-mix(in srgb, var(--t) 22%, transparent);
  transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
}
.die.red { --t: var(--red); }
.die i {
  position: absolute;
  width: 17%;
  height: 17%;
  border-radius: 50%;
  background: #fff;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 calc(var(--s) * 0.09) var(--t);
}
.die .tl { left: 27%; top: 27%; }
.die .tr { left: 73%; top: 27%; }
.die .ml { left: 27%; top: 50%; }
.die .mr { left: 73%; top: 50%; }
.die .c  { left: 50%; top: 50%; }
.die .bl { left: 27%; top: 73%; }
.die .br { left: 73%; top: 73%; }

.die.spin { animation: spin 0.9s cubic-bezier(0.2, 0.9, 0.25, 1.15); }
@keyframes spin {
  0%   { transform: rotate(0) scale(1); }
  40%  { transform: rotate(540deg) scale(0.82); }
  100% { transform: rotate(720deg) scale(1); }
}

/* ---------- hero ---------- */

.hero { padding: 80px 0 100px; }
.hero .wrap { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; }
.hero h1 { margin: 20px 0 24px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.hero-meta { margin-top: 26px; font-family: var(--mono); font-size: 12px; letter-spacing: 0.18em; color: var(--text-faint); text-transform: uppercase; }

.phone-stage { position: relative; display: flex; justify-content: center; }
.phone {
  position: relative;
  width: min(330px, 78vw);
  padding: 12px;
  border-radius: 54px;
  background: linear-gradient(145deg, #3a4157, #0b0e18 40%, #1b2030);
  box-shadow: 0 0 0 1.5px rgba(61, 232, 255, 0.35), 0 0 80px rgba(61, 232, 255, 0.25), 0 40px 80px rgba(0, 0, 0, 0.6);
}
.phone img { width: 100%; border-radius: 43px; }
.phone::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 23px;
  width: 25%;
  height: 3.4%;
  transform: translateX(-50%);
  border-radius: 999px;
  background: #000;
}
.float { position: absolute; animation: bob 6s ease-in-out infinite; }
.float.f1 { --s: 74px; left: -4%; top: 12%; rotate: -14deg; }
.float.f2 { --s: 62px; right: -2%; top: 46%; rotate: 16deg; animation-delay: -2s; }
.float.f3 { --s: 52px; left: 6%; bottom: 6%; rotate: 8deg; animation-delay: -4s; }
@keyframes bob {
  50% { translate: 0 -14px; }
}

/* ---------- how to play ---------- */

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.step { padding: 28px 24px; display: flex; flex-direction: column; gap: 18px; }
.step .die { --s: 64px; }
.step-dice { display: flex; gap: 8px; }
.step-dice .die { --s: 46px; }
.step .label { font-family: var(--mono); font-size: 12px; font-weight: 700; letter-spacing: 0.22em; color: var(--cyan); }
.step p { color: var(--text-dim); font-size: 16px; }

.rules { margin-top: 18px; padding: 30px 32px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.rules div { display: flex; gap: 14px; align-items: flex-start; }
.rules .num {
  flex: none;
  width: 30px; height: 30px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--mono); font-size: 13px; font-weight: 800;
  color: var(--void);
  background: var(--cyan);
  box-shadow: 0 0 16px rgba(61, 232, 255, 0.5);
}
.rules p { color: var(--text-dim); font-size: 16px; }
.rules strong { color: var(--text); }

/* ---------- playable demo ---------- */

.demo { max-width: 760px; margin-inline: auto; padding: 28px; }
.hud { display: flex; align-items: center; gap: 18px; padding: 16px 18px; margin-bottom: 22px; }
.roll-count .kicker { color: var(--text-dim); font-size: 11px; }
.roll-count strong { font-size: 36px; line-height: 1; }
.roll-count span { font-family: var(--mono); font-weight: 700; color: var(--text-dim); }
.bars { display: flex; gap: 5px; margin-top: 8px; }
.bars b { width: 18px; height: 4px; border-radius: 9px; background: rgba(255, 255, 255, 0.12); transition: background 0.25s, box-shadow 0.25s; }
.bars b.on { background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }
.hud-divider { width: 1px; align-self: stretch; background: var(--line); }
.chips { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; flex: 1; }
.chip {
  --a: var(--cyan);
  text-align: center;
  padding: 10px 4px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-faint);
  transition: all 0.25s;
}
.chip.cargo { --a: var(--violet); }
.chip strong { display: block; font-size: 22px; line-height: 1.1; }
.chip small { font-family: var(--mono); font-size: 10px; font-weight: 700; letter-spacing: 0.14em; }
.chip.lit {
  color: #fff;
  border-color: color-mix(in srgb, var(--a) 70%, transparent);
  background: color-mix(in srgb, var(--a) 16%, transparent);
}
.chip.lit strong { text-shadow: 0 0 10px var(--a); }
.chip.lit small { color: var(--a); }

.tray { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.die-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 18px 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: var(--panel);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
}
.die-btn:hover { transform: translateY(-2px); }
.die-btn .die { --s: clamp(46px, 11vw, 92px); }
.die-btn .state { font-family: var(--mono); font-size: 11px; font-weight: 700; letter-spacing: 0.16em; color: var(--green); }
.die-btn[aria-pressed="true"] { border-color: rgba(255, 56, 92, 0.5); background: rgba(255, 56, 92, 0.1); }
.die-btn[aria-pressed="true"] .state { color: var(--red); }

.demo-controls { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 22px; }
.demo-controls .btn-primary { grid-column: 1 / -1; height: 62px; font-size: 20px; letter-spacing: 0.2em; }
.demo-controls .btn-primary.over { background: linear-gradient(90deg, var(--violet), var(--cyan)); box-shadow: 0 0 28px rgba(140, 61, 255, 0.45); }
.btn-hold { border-color: rgba(255, 56, 92, 0.45); }
.btn-free { border-color: rgba(41, 255, 143, 0.45); }
.btn-free[aria-pressed="true"] { background: rgba(41, 255, 143, 0.14); }
.demo-status { margin-top: 16px; min-height: 1.5em; text-align: center; color: var(--text-dim); font-size: 15px; }

/* ---------- features ---------- */

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature { padding: 30px 28px; }
.feature .icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border-radius: 14px;
  margin-bottom: 20px;
  color: var(--cyan);
  background: rgba(61, 232, 255, 0.1);
  border: 1px solid rgba(61, 232, 255, 0.35);
}
.feature .icon svg { width: 24px; height: 24px; }
.feature p { margin-top: 10px; color: var(--text-dim); font-size: 16px; }

/* ---------- screenshots ---------- */

.gallery {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 8px 16px 24px;
  scroll-padding-inline: 16px;
  scrollbar-width: thin;
  scrollbar-color: rgba(61, 232, 255, 0.4) transparent;
}
.gallery img {
  flex: none;
  width: min(270px, 70vw);
  border-radius: 26px;
  scroll-snap-align: start;
  border: 1px solid var(--line);
}
@media (min-width: 1240px) { .gallery { justify-content: center; } }

/* ---------- classic ---------- */

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.compare { display: flex; justify-content: center; gap: 22px; }
.compare figure { text-align: center; }
.compare .phone { width: min(230px, 40vw); padding: 9px; border-radius: 40px; }
.compare .phone img { border-radius: 32px; }
.compare .phone::after { top: 17px; }
.compare .phone.classic { box-shadow: 0 0 0 1.5px rgba(255, 255, 255, 0.25), 0 30px 60px rgba(0, 0, 0, 0.6); }
.compare figcaption { margin-top: 16px; font-family: var(--mono); font-size: 12px; font-weight: 700; letter-spacing: 0.2em; color: var(--text-dim); }
.checks { list-style: none; margin-top: 28px; display: grid; gap: 14px; }
.checks li { display: flex; gap: 12px; color: var(--text-dim); font-size: 17px; }
.checks li::before { content: ""; flex: none; width: 10px; height: 10px; margin-top: 9px; border-radius: 50%; background: var(--green); box-shadow: 0 0 10px var(--green); }

/* ---------- CTA ---------- */

.cta-card { padding: 72px 32px; text-align: center; position: relative; overflow: hidden; }
.cta-card .dice-row { display: flex; justify-content: center; gap: 18px; margin-bottom: 36px; }
.cta-card .dice-row .die { --s: 76px; }
.cta-card .lede { margin: 18px auto 32px; }

/* ---------- content pages ---------- */

.page-head { padding: 88px 0 40px; }
.page-head h1 { font-size: clamp(40px, 6vw, 64px); margin-top: 16px; }
.page-head .lede { margin-top: 18px; }
.prose { padding: 40px; max-width: 820px; }
.prose h2 { font-size: 26px; margin: 36px 0 12px; }
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { color: var(--text-dim); font-size: 17px; }
.prose p + p { margin-top: 12px; }
.prose ul { margin: 12px 0 0 22px; display: grid; gap: 8px; }
.prose a { color: var(--cyan); }
.prose strong { color: var(--text); }
.updated { font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; color: var(--text-faint); text-transform: uppercase; }

.support-grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: 24px; align-items: start; padding-bottom: 96px; }
.contact { padding: 32px; position: sticky; top: 96px; }
.contact p { color: var(--text-dim); margin: 12px 0 24px; }
.faq { display: grid; gap: 12px; }
.faq details { padding: 0 24px; }
.faq summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 0;
  font-weight: 800;
  font-size: 18px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--mono); color: var(--cyan); font-size: 22px; line-height: 1; transition: transform 0.2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--text-dim); padding-bottom: 22px; margin-top: -6px; }

.notfound { min-height: 70vh; display: grid; place-items: center; text-align: center; }
.notfound .dice-row { display: flex; justify-content: center; gap: 16px; margin-bottom: 32px; }
.notfound .die { --s: 72px; }
.notfound .lede { margin: 18px auto 32px; }

/* ---------- footer ---------- */

footer { border-top: 1px solid var(--line); padding: 40px 0 48px; color: var(--text-faint); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 28px; }
footer nav { display: flex; gap: 22px; margin-left: auto; }
footer a { text-decoration: none; color: var(--text-dim); }
footer a:hover { color: var(--text); }

/* ---------- responsive ---------- */

@media (max-width: 960px) {
  .hero .wrap, .split, .support-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 56px; text-align: center; }
  .hero .lede { margin-inline: auto; }
  .hero-actions { justify-content: center; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .rules, .features { grid-template-columns: 1fr; }
  .split .copy { text-align: center; }
  .split .copy .lede { margin-inline: auto; }
  .checks { justify-content: center; text-align: left; }
  .contact { position: static; }
}

@media (max-width: 640px) {
  section { padding: 72px 0; }
  .nav-links { display: none; }
  .nav .btn { margin-left: auto; }
  .steps { grid-template-columns: 1fr; }
  .demo { padding: 16px; }
  .hud { flex-direction: column; align-items: stretch; }
  .hud-divider { display: none; }
  .tray { gap: 8px; }
  .die-btn { padding: 12px 2px 10px; border-radius: 14px; }
  .die-btn .state { font-size: 9px; letter-spacing: 0.08em; }
  .prose { padding: 24px; }
  .cta-card .dice-row .die { --s: 56px; }
  footer nav { margin-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

.split .kicker { margin-bottom: 16px; }
.split .lede { margin-top: 18px; }

/* ---------- studio home ---------- */

.brand-mark {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: 10px;
  color: var(--void);
  font-weight: 900;
  background: linear-gradient(135deg, var(--green), var(--cyan));
  box-shadow: 0 0 18px rgba(61, 232, 255, 0.4);
}
.studio-hero { padding: 120px 0 40px; text-align: center; }
.studio-hero .wrap { display: block; }
.studio-hero h1 { margin: 20px 0 24px; }
.studio-hero .lede { margin-inline: auto; }
.apps-section { padding-top: 40px; }
.apps-section > .wrap > .kicker { margin-bottom: 20px; }
.app-card { display: grid; grid-template-columns: auto 1fr auto; gap: 36px; align-items: center; padding: 36px; }
.app-icon { width: 128px; border-radius: 28px; box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45); }
.app-info .lede { margin-top: 12px; font-size: 18px; }
.app-info .hero-actions { margin-top: 26px; }
.app-dice { display: flex; gap: 14px; }
.app-dice .die { --s: 64px; }
@media (max-width: 960px) {
  .app-card { grid-template-columns: 1fr; text-align: center; justify-items: center; }
  .app-info .hero-actions { justify-content: center; }
}