/* poly99 site — neon twin-stick look.
   System fonts only, no external resources. Dark ground, cyan/magenta glow, polygon motif. */

:root {
  --bg:        #04060b;
  --bg-2:      #070a12;
  --panel:     rgba(10, 14, 24, .78);
  --line:      rgba(0, 240, 255, .16);
  --line-mg:   rgba(255, 47, 208, .18);
  --cyan:      #00f0ff;
  --magenta:   #ff2fd0;
  --ink:       #dfe7f3;
  --ink-dim:   #8b98ad;
  --glow-c:    0 0 12px rgba(0, 240, 255, .55), 0 0 34px rgba(0, 240, 255, .22);
  --glow-m:    0 0 12px rgba(255, 47, 208, .5), 0 0 34px rgba(255, 47, 208, .2);
  --mono: ui-monospace, "Cascadia Mono", "Consolas", "DejaVu Sans Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --maxw: 1120px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: none; }

/* Keyboard users get a way past the sticky top bar; sighted users never see it. */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 10px 16px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: #04121a;
  background: var(--cyan);
  border-radius: 0 0 3px 0;
}
.skip-link:focus { left: 0; }

code {
  font-family: var(--mono);
  font-size: .92em;
  color: var(--cyan);
}

/* ------------------------------------------------------------------------------------------ */
/* background FX: polygon field, scanlines, vignette                                            */
/* ------------------------------------------------------------------------------------------ */

.fx {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(1200px 700px at 78% -10%, rgba(255, 47, 208, .10), transparent 60%),
    radial-gradient(1000px 800px at 12% 110%, rgba(0, 240, 255, .10), transparent 62%),
    linear-gradient(180deg, var(--bg-2), var(--bg) 55%);
}

.fx-poly { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .8; }

.fx-poly .drift { transform-box: fill-box; transform-origin: center; }
.fx-poly .a { animation: drift 26s ease-in-out infinite alternate; }
.fx-poly .b { animation: drift 32s ease-in-out infinite alternate-reverse; }
.fx-poly .c { animation: drift 22s ease-in-out infinite alternate; }
.fx-poly .d { animation: drift 30s ease-in-out infinite alternate-reverse; }
.fx-poly .shards polygon { animation: blink 4.5s steps(2, end) infinite; }
.fx-poly .shards polygon:nth-child(2) { animation-delay: 1.1s; }
.fx-poly .shards polygon:nth-child(3) { animation-delay: 2.3s; }
.fx-poly .shards polygon:nth-child(4) { animation-delay: 3.4s; }

@keyframes drift {
  from { transform: translate3d(0, 0, 0) rotate(0deg); }
  to   { transform: translate3d(18px, -22px, 0) rotate(6deg); }
}
@keyframes blink {
  0%, 100% { opacity: .25; }
  50%      { opacity: 1; }
}

.fx-scan {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    180deg,
    rgba(255, 255, 255, .028) 0 1px,
    transparent 1px 3px
  );
  mix-blend-mode: overlay;
}

.fx-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 90% at 50% 45%, transparent 55%, rgba(0, 0, 0, .72));
}

/* ------------------------------------------------------------------------------------------ */
/* top bar                                                                                      */
/* ------------------------------------------------------------------------------------------ */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 16px clamp(16px, 4vw, 32px);
  background: linear-gradient(180deg, rgba(4, 6, 11, .92), rgba(4, 6, 11, .55) 70%, transparent);
  backdrop-filter: blur(6px);
}

.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-mark { width: 30px; height: 30px; filter: drop-shadow(0 0 6px rgba(0, 240, 255, .7)); }
.brand-name {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: #fff;
  text-shadow: 0 0 10px rgba(0, 240, 255, .55);
}
.brand-name.small { font-size: 15px; }

.nav { display: flex; gap: clamp(14px, 3vw, 30px); }
.nav a {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-dim);
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
}
.nav a:hover { color: var(--cyan); border-bottom-color: var(--cyan); text-shadow: var(--glow-c); }

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

main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 32px) 40px;
}

section { scroll-margin-top: 80px; }

.panel {
  position: relative;
  margin-top: clamp(44px, 7vw, 84px);
  padding: clamp(22px, 4vw, 38px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  box-shadow: inset 0 0 60px rgba(0, 240, 255, .05), 0 18px 50px rgba(0, 0, 0, .55);
}
.panel::before,
.panel::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid var(--cyan);
  filter: drop-shadow(0 0 6px rgba(0, 240, 255, .7));
}
.panel::before { top: -2px; left: -2px; border-right: 0; border-bottom: 0; }
.panel::after { bottom: -2px; right: -2px; border-left: 0; border-top: 0; border-color: var(--magenta); filter: drop-shadow(0 0 6px rgba(255, 47, 208, .7)); }

.panel-head h2 {
  margin: 0 0 6px;
  font-size: clamp(24px, 3.6vw, 36px);
  letter-spacing: .04em;
  text-transform: uppercase;
  color: #fff;
}
.panel-head h2::after {
  content: "";
  display: block;
  width: 72px;
  height: 2px;
  margin-top: 12px;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  box-shadow: var(--glow-c);
}
.panel-note { margin: 12px 0 0; color: var(--ink-dim); font-size: 14px; max-width: 62ch; }

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

.hero { padding: clamp(40px, 9vw, 96px) 0 0; }

.kicker {
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: clamp(11px, 1.6vw, 13px);
  letter-spacing: .5em;
  text-transform: uppercase;
  color: var(--magenta);
  text-shadow: var(--glow-m);
}

.hero h1 {
  margin: 0;
  font-size: clamp(44px, 10vw, 108px);
  line-height: .95;
  letter-spacing: -.02em;
  text-transform: uppercase;
  color: #fff;
  font-weight: 800;
}
.glow-c { color: var(--cyan); text-shadow: var(--glow-c); }
.glow-m { color: var(--magenta); text-shadow: var(--glow-m); }

.lede {
  margin: clamp(20px, 3vw, 30px) 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.9vw, 18px);
  color: var(--ink);
}
.lede strong { color: var(--cyan); font-weight: 700; }

.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: clamp(24px, 4vw, 36px); }

.stat-strip {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: clamp(12px, 3vw, 26px);
  margin-top: clamp(28px, 5vw, 48px);
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.stat { display: flex; flex-direction: column; }
.stat-num {
  font-family: var(--mono);
  font-size: clamp(28px, 5vw, 46px);
  font-weight: 700;
  color: var(--cyan);
  text-shadow: var(--glow-c);
  line-height: 1;
}
.stat-key {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-top: 8px;
}
.stat-sep { color: var(--magenta); font-size: clamp(24px, 4vw, 40px); text-shadow: var(--glow-m); }

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

.btn {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 14px 26px;
  font-family: var(--mono);
  text-align: center;
  border: 1px solid var(--cyan);
  border-radius: 3px;
  color: var(--cyan);
  background: rgba(0, 240, 255, .06);
  box-shadow: inset 0 0 18px rgba(0, 240, 255, .12);
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
}
.btn-label {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.btn-sub {
  font-size: 10.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.btn:hover, .btn:focus-visible {
  transform: translateY(-2px);
  background: rgba(0, 240, 255, .14);
  box-shadow: var(--glow-c), inset 0 0 18px rgba(0, 240, 255, .18);
  outline: none;
}
.btn:active { transform: translateY(0); }

.btn-primary {
  color: #04121a;
  background: linear-gradient(180deg, #6ff8ff, var(--cyan));
  border-color: var(--cyan);
  box-shadow: 0 0 18px rgba(0, 240, 255, .45);
}
.btn-primary .btn-sub { color: rgba(4, 18, 26, .72); }
.btn-primary:hover, .btn-primary:focus-visible {
  background: linear-gradient(180deg, #9dfbff, #43f4ff);
  box-shadow: var(--glow-c);
}

.btn-ghost:hover, .btn-ghost:focus-visible { color: #fff; border-color: var(--magenta); box-shadow: var(--glow-m); }

.btn-block { display: flex; width: 100%; margin-top: 16px; }

.btn.is-disabled,
.btn[aria-disabled="true"] {
  cursor: not-allowed;
  color: var(--ink-dim);
  border-color: rgba(139, 152, 173, .4);
  background: rgba(139, 152, 173, .06);
  box-shadow: none;
  transform: none;
  pointer-events: none;
}
.btn.is-disabled .btn-label { text-decoration: line-through; text-decoration-thickness: 1px; }

/* ------------------------------------------------------------------------------------------ */
/* download cards                                                                               */
/* ------------------------------------------------------------------------------------------ */

.dl-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(16px, 3vw, 28px);
  margin-top: clamp(20px, 3vw, 30px);
}

.dl-card {
  position: relative;
  padding: clamp(18px, 3vw, 26px);
  background: rgba(6, 9, 16, .85);
  border: 1px solid var(--line);
  border-radius: 4px;
}
.dl-card[data-dl="android"] { border-color: var(--line-mg); }

.dl-card-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.plat {
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: #fff;
}
.chip {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  padding: 4px 9px;
  color: var(--cyan);
  border: 1px solid var(--cyan);
  border-radius: 999px;
  box-shadow: inset 0 0 10px rgba(0, 240, 255, .2);
}
.dl-card[data-dl="android"] .chip { color: var(--magenta); border-color: var(--magenta); box-shadow: inset 0 0 10px rgba(255, 47, 208, .2); }

.dl-desc { margin: 14px 0 0; font-size: 14.5px; color: var(--ink-dim); }

.dl-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 14px;
  margin: 18px 0 0;
  padding: 14px 0 0;
  border-top: 1px dashed rgba(0, 240, 255, .18);
}
.dl-meta .wide { grid-column: 1 / -1; }
.dl-meta dt {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.dl-meta dd {
  margin: 3px 0 0;
  font-family: var(--mono);
  font-size: 14px;
  color: var(--ink);
  overflow-wrap: anywhere;
}
.dl-meta dd.sha { font-size: 11.5px; color: var(--cyan); line-height: 1.5; }
.dl-meta dd.is-empty { color: #4c576a; }

.fineprint {
  margin: clamp(18px, 3vw, 26px) 0 0;
  font-size: 13px;
  color: var(--ink-dim);
}

/* ------------------------------------------------------------------------------------------ */
/* editions                                                                                     */
/* ------------------------------------------------------------------------------------------ */

.ed-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: clamp(16px, 3vw, 28px);
  margin-top: clamp(20px, 3vw, 30px);
}

.ed-card {
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(0, 240, 255, .07), rgba(6, 9, 16, .9) 55%);
  border-radius: 4px;
}
.ed-card.ed-b {
  border-color: var(--line-mg);
  background: linear-gradient(200deg, rgba(255, 47, 208, .08), rgba(6, 9, 16, .9) 55%);
}

.ed-tag {
  margin: 0;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--cyan);
}
.ed-b .ed-tag { color: var(--magenta); }
.ed-card h3 {
  margin: 8px 0 0;
  font-size: clamp(30px, 5vw, 44px);
  text-transform: uppercase;
  letter-spacing: .02em;
  color: #fff;
}
.ed-sub {
  margin: 2px 0 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.ed-list { margin: 18px 0 0; padding: 0; list-style: none; }
.ed-list li {
  position: relative;
  padding: 7px 0 7px 26px;
  font-size: 14.5px;
  color: var(--ink);
  border-bottom: 1px solid rgba(255, 255, 255, .05);
}
.ed-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 14px;
  width: 9px;
  height: 9px;
  background: var(--cyan);
  clip-path: polygon(50% 0, 100% 38%, 82% 100%, 18% 100%, 0 38%);
  box-shadow: 0 0 8px rgba(0, 240, 255, .8);
}
.ed-b .ed-list li::before { background: var(--magenta); box-shadow: 0 0 8px rgba(255, 47, 208, .8); }

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

.feat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: clamp(16px, 3vw, 26px);
  margin-top: clamp(20px, 3vw, 30px);
}

.feat {
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, .07);
  background: rgba(6, 9, 16, .7);
  border-radius: 4px;
}
.feat svg { width: 42px; height: 42px; color: var(--cyan); filter: drop-shadow(0 0 6px rgba(0, 240, 255, .6)); }
.feat:nth-child(even) svg { color: var(--magenta); filter: drop-shadow(0 0 6px rgba(255, 47, 208, .6)); }
.feat h3 {
  margin: 14px 0 6px;
  font-size: 16px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #fff;
}
.feat p { margin: 0; font-size: 14px; color: var(--ink-dim); }

/* ------------------------------------------------------------------------------------------ */
/* cta band + footer                                                                            */
/* ------------------------------------------------------------------------------------------ */

.cta-band {
  position: relative;
  overflow: hidden;
  margin-top: clamp(44px, 7vw, 84px);
  padding: clamp(34px, 6vw, 64px) clamp(20px, 4vw, 40px);
  text-align: center;
  border: 1px solid var(--line-mg);
  background:
    radial-gradient(600px 200px at 50% 0%, rgba(255, 47, 208, .14), transparent 70%),
    rgba(6, 9, 16, .8);
  border-radius: 4px;
}
.band-poly {
  position: absolute;
  right: -40px;
  top: -30px;
  width: 200px;
  opacity: .35;
  animation: drift 24s ease-in-out infinite alternate;
}
.cta-band h2 {
  margin: 0;
  font-size: clamp(30px, 6vw, 56px);
  text-transform: uppercase;
  color: #fff;
}
.cta-band p { margin: 10px 0 24px; color: var(--ink-dim); }

.footer {
  border-top: 1px solid var(--line);
  margin-top: clamp(40px, 6vw, 70px);
  background: rgba(4, 6, 11, .9);
}
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 22px clamp(16px, 4vw, 32px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .08em;
}
.footer-inner a { color: var(--ink-dim); text-transform: uppercase; letter-spacing: .16em; font-size: 11.5px; }
.footer-inner a:hover { color: var(--cyan); text-shadow: var(--glow-c); }
.footer-sep { color: var(--magenta); font-size: 9px; }
.muted { color: #5b667a; }

/* ------------------------------------------------------------------------------------------ */
/* download page                                                                                */
/* ------------------------------------------------------------------------------------------ */

.page-head { padding: clamp(36px, 7vw, 72px) 0 0; }
.page-head h1 {
  margin: 0;
  font-size: clamp(36px, 8vw, 76px);
  text-transform: uppercase;
  color: #fff;
  line-height: 1;
}
.page-head p { margin: 16px 0 0; max-width: 62ch; color: var(--ink-dim); }

.manifest-note {
  margin-top: 18px;
  padding: 12px 14px;
  border-left: 2px solid var(--cyan);
  background: rgba(0, 240, 255, .06);
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-dim);
}

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

@media (max-width: 720px) {
  .topbar { padding-top: 12px; padding-bottom: 12px; }
  .brand-name { font-size: 17px; letter-spacing: .16em; }
  .nav { gap: 14px; }
  .nav a { font-size: 11.5px; letter-spacing: .12em; }
  .hero { padding-top: 28px; }
  .cta-row .btn { flex: 1 1 100%; }
  .dl-meta { grid-template-columns: 1fr; }
  .dl-meta .wide { grid-column: auto; }
  .stat-strip { gap: 14px; }
  .stat-sep { display: none; }
  .stat { flex: 1 1 40%; }
  .panel::before, .panel::after { width: 12px; height: 12px; }
  .band-poly { display: none; }
}

@media (max-width: 420px) {
  .btn { padding: 13px 18px; }
  .btn-label { font-size: 13.5px; letter-spacing: .12em; }
}

@media (prefers-reduced-motion: reduce) {
  .fx-poly .drift, .fx-poly .shards polygon, .band-poly { animation: none; }
  .btn { transition: none; }
}