:root {
  --bg: #000;
  --text: #f5f5f7;
  --dim: #a1a1a6;
  --faint: #6e6e73;
  --glass: rgba(255, 255, 255, .07);
  --glass-hi: rgba(255, 255, 255, .13);
  --line: rgba(255, 255, 255, .10);
  --blue: #0a84ff;
  --green: #30d158;
  --orange: #ff9f0a;
  --red: #ff453a;
  --radius: 26px;
  --ease: cubic-bezier(.2, .8, .2, 1);
  --font: Inter, -apple-system, BlinkMacSystemFont, "SF Pro Display", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 500 18px/1.45 var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
button { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }

/* Ambient light, like a Top Shelf backdrop */
.ambient { position: fixed; inset: 0; z-index: -1; overflow: hidden; }
.ambient i {
  position: absolute; width: 70vmax; height: 70vmax; border-radius: 50%;
  filter: blur(120px); opacity: .32; animation: drift 28s ease-in-out infinite alternate;
}
.ambient i:nth-child(1) { background: #2b5cff; top: -35vmax; left: -20vmax; }
.ambient i:nth-child(2) { background: #8a2be2; bottom: -40vmax; right: -25vmax; animation-delay: -9s; opacity: .22; }
.ambient i:nth-child(3) { background: #00c2a8; top: 30%; left: 45%; width: 40vmax; height: 40vmax; animation-delay: -17s; opacity: .14; }
@keyframes drift { to { transform: translate(8vmax, 6vmax) scale(1.15); } }

/* Top bar */
.top {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 16px;
  padding: max(18px, env(safe-area-inset-top)) clamp(16px, 4vw, 56px) 18px;
  background: linear-gradient(#000c, #0000);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -.01em; border-radius: 12px; padding: 6px 8px; margin-left: -8px; }
.brand-mark {
  width: 26px; height: 26px; border-radius: 8px;
  background: linear-gradient(135deg, #fff, #9aa0a6);
  box-shadow: inset 0 0 0 5px #000, inset 0 0 0 6px #fff3;
}
.dots { flex: 1; display: flex; justify-content: center; gap: 8px; }
.dots span { width: 7px; height: 7px; border-radius: 4px; background: #ffffff33; transition: all .4s var(--ease); }
.dots span.on { width: 26px; background: var(--text); }
.dots span.done { background: #ffffff88; }
.lang { display: flex; gap: 2px; padding: 3px; border-radius: 999px; background: var(--glass); }
.lang button {
  border: 0; background: none; border-radius: 999px; padding: 6px 12px; min-width: 40px;
  font-size: 13px; font-weight: 700; color: var(--dim); cursor: pointer; transition: all .25s var(--ease);
}
.lang button.on { background: var(--glass-hi); color: var(--text); }

/* Screens */
main { padding: 0 clamp(16px, 4vw, 56px) 64px; max-width: 1240px; margin: 0 auto; outline: none; }
.screen { animation: enter .55s var(--ease) both; }
@keyframes enter { from { opacity: 0; transform: translateY(18px) scale(.985); } }

.eyebrow { color: var(--dim); font-size: 15px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; margin: 4vh 0 10px; }
h1 { font-size: clamp(40px, 7vw, 76px); line-height: 1.02; letter-spacing: -.035em; font-weight: 800; margin: 0 0 16px; }
h2 { font-size: clamp(28px, 4vw, 40px); letter-spacing: -.025em; font-weight: 700; margin: 0 0 8px; }
.lead { color: var(--dim); font-size: clamp(18px, 2.2vw, 22px); max-width: 620px; margin: 0 0 36px; }
.hint { color: var(--faint); font-size: 15px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.path { display: inline-flex; gap: 6px; align-items: center; color: var(--dim); }
.path b { font-weight: 600; color: var(--text); background: var(--glass); padding: 3px 10px; border-radius: 8px; }

/* Focusable things share the tvOS lift */
[data-focus] { outline: none; -webkit-tap-highlight-color: transparent; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-width: 150px; padding: 16px 30px; border: 0; border-radius: 16px;
  background: var(--glass-hi); color: var(--text);
  font-size: 18px; font-weight: 600; cursor: pointer;
  transition: transform .3s var(--ease), background .2s, color .2s, box-shadow .3s;
}
.btn.primary { background: var(--text); color: #000; }
.btn:disabled { opacity: .35; cursor: default; }
.btn:not(:disabled):is(:hover, :focus-visible, .focus) {
  background: var(--text); color: #000; transform: scale(1.06);
  box-shadow: 0 18px 40px #0009, 0 0 0 1px #fff4;
}
.lang button:is(:hover, :focus-visible), .brand:is(:hover, :focus-visible) { background: var(--text); color: #000; }
.actions { display: flex; gap: 14px; margin-top: 40px; flex-wrap: wrap; }

/* Tiles (cards, app icons) */
.tile {
  --mx: 50%; --my: 0%; --rx: 0deg; --ry: 0deg;
  position: relative; display: flex; flex-direction: column; justify-content: flex-end;
  border: 0; text-align: left; cursor: pointer; overflow: hidden;
  border-radius: var(--radius); background: var(--glass);
  box-shadow: 0 1px 0 #ffffff14 inset;
  transform: perspective(900px) rotateX(var(--rx)) rotateY(var(--ry));
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .3s;
}
.tile::after { /* specular sheen */
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(circle at var(--mx) var(--my), #ffffff2e, transparent 55%);
  opacity: 0; transition: opacity .3s;
}
.tile:is(:hover, :focus-visible, .focus) {
  transform: perspective(900px) rotateX(var(--rx)) rotateY(var(--ry)) scale(1.07);
  box-shadow: 0 30px 60px #000c, 0 0 0 1px #ffffff26 inset;
  z-index: 2;
}
.tile:is(:hover, :focus-visible, .focus)::after { opacity: 1; }
.tile.selected { box-shadow: 0 0 0 3px var(--text) inset, 0 30px 60px #000c; }

/* Home */
.hero { padding: 6vh 0 2vh; }
.hero h1 { max-width: 900px; }
.hero h1 em { font-style: normal; background: linear-gradient(90deg, #fff, #8e9aff 60%, #6ee7d8); -webkit-background-clip: text; background-clip: text; color: transparent; }
.steps3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 8px 0 0; }
.steps3 .tile { min-height: 190px; padding: 26px; }
.steps3 .n { font-size: 15px; color: var(--dim); font-weight: 700; margin-bottom: auto; }
.steps3 .t { font-size: 24px; font-weight: 700; letter-spacing: -.02em; }
.steps3 .d { color: var(--dim); font-size: 16px; }
.shelf-title { display: flex; align-items: baseline; justify-content: space-between; margin: 56px 0 18px; }
.shelf-title h2 { font-size: 26px; margin: 0; }
.shelf-title a { color: var(--dim); font-size: 16px; }

.apps { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 22px; }
.app { padding: 0; background: transparent; box-shadow: none; overflow: visible; }
.app .icon {
  aspect-ratio: 16 / 10; border-radius: var(--radius); display: grid; place-items: center;
  background: var(--g, linear-gradient(135deg, #3a3a3c, #1c1c1e)); position: relative; overflow: hidden;
  box-shadow: 0 1px 0 #ffffff30 inset, 0 10px 30px #0006;
  transition: box-shadow .35s var(--ease);
}
.app .icon svg { width: 34%; height: 34%; color: #fff; filter: drop-shadow(0 4px 10px #0004); }
.app .icon::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(circle at var(--mx) var(--my), #ffffff40, transparent 55%); opacity: 0; transition: opacity .3s;
}
.app::after { display: none; }
.app:is(:hover, :focus-visible, .focus) { box-shadow: none; }
.app:is(:hover, :focus-visible, .focus) .icon { box-shadow: 0 30px 60px #000d; }
.app:is(:hover, :focus-visible, .focus) .icon::after { opacity: 1; }
.app .name { margin: 14px 4px 0; font-weight: 600; font-size: 17px; transition: color .2s; }
.app .sub { margin: 2px 4px 0; color: var(--faint); font-size: 14px; }
.badge { position: absolute; top: 12px; right: 12px; font-size: 11px; font-weight: 700; letter-spacing: .04em; padding: 4px 8px; border-radius: 8px; background: #0006; backdrop-filter: blur(10px); color: #fffc; }

/* Inputs */
.field {
  display: block; width: 100%; max-width: 560px;
  font: 700 clamp(32px, 5vw, 48px)/1 var(--mono); letter-spacing: .06em;
  color: var(--text); background: var(--glass); caret-color: var(--blue);
  border: 0; border-radius: 22px; padding: 26px 28px; outline: none;
  box-shadow: 0 0 0 1px var(--line) inset; transition: box-shadow .3s var(--ease), transform .3s var(--ease);
  text-transform: uppercase;
}
.field::placeholder { color: #ffffff2a; }
.field:focus { box-shadow: 0 0 0 2px var(--text) inset, 0 20px 50px #0008; transform: scale(1.015); }
.found { min-height: 64px; margin: 18px 0 0; display: flex; align-items: center; gap: 14px; font-size: 20px; font-weight: 600; }
.found .chip { display: inline-flex; align-items: center; gap: 10px; padding: 10px 18px; border-radius: 999px; background: var(--glass-hi); animation: enter .4s var(--ease); }
.found .chip.ok::before { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--green); box-shadow: 0 0 12px var(--green); }
.found .chip.bad::before { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--red); }
.or { color: var(--faint); margin: 30px 0 14px; font-size: 15px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; }
.models { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px; }
.models .tile { min-height: 96px; padding: 16px 18px; }
.models .tile b { font-size: 16px; }
.models .tile span { color: var(--faint); font-size: 13px; }

/* Result + instructions */
.result { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); gap: 28px; align-items: start; }
.method { padding: 32px; border-radius: 30px; background: var(--glass); box-shadow: 0 1px 0 #ffffff14 inset; position: sticky; top: 90px; }
.method .kicker { color: var(--dim); font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }
.method h2 { font-size: clamp(40px, 5vw, 60px); margin: 6px 0 14px; }
.tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag { font-size: 13px; font-weight: 700; padding: 6px 12px; border-radius: 999px; background: var(--glass-hi); color: var(--dim); }
.tag.good { background: #30d15822; color: var(--green); }
.tag.warn { background: #ff9f0a22; color: var(--orange); }
.method .alt { margin-top: 22px; color: var(--faint); font-size: 14px; }
.method .alt a { color: var(--dim); text-decoration: underline; text-underline-offset: 3px; }

.list { display: flex; flex-direction: column; gap: 12px; counter-reset: s; margin: 0; padding: 0; }
.list li {
  list-style: none; counter-increment: s; display: grid; grid-template-columns: 44px 1fr; gap: 14px; align-items: start;
  padding: 18px 20px; border-radius: 20px; background: var(--glass); transition: background .25s, transform .3s var(--ease);
  animation: enter .5s var(--ease) both;
}
.list li:nth-child(2) { animation-delay: .05s; } .list li:nth-child(3) { animation-delay: .1s; }
.list li:nth-child(4) { animation-delay: .15s; } .list li:nth-child(5) { animation-delay: .2s; }
.list li::before {
  content: counter(s); width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center;
  background: var(--glass-hi); font-weight: 700; font-size: 16px;
}
.list li.check::before { content: "✓"; background: var(--green); color: #000; }
.list li p { margin: 6px 0 0; font-size: 19px; }
.list li small { display: block; color: var(--faint); font-size: 14px; margin-top: 4px; }
.list li:hover { background: var(--glass-hi); }

.kbd {
  display: inline-block; font: 600 clamp(16px, 2.3vw, 22px)/1.3 var(--mono); color: var(--text);
  background: #ffffff14; border: 1px solid #ffffff1f; border-bottom-width: 3px;
  padding: 6px 12px; border-radius: 12px; margin-top: 8px; overflow-wrap: anywhere; user-select: all;
}
.kbd.big { font-size: clamp(17px, 3vw, 30px); padding: 14px 20px; border-radius: 16px; }

.empty { padding: 40px; border-radius: 30px; background: var(--glass); max-width: 720px; }
.empty h2 { margin-bottom: 12px; }
.empty p { color: var(--dim); margin: 0 0 8px; }

.cmds { display: flex; flex-direction: column; gap: 16px; max-width: 900px; }
.cmd { display: grid; grid-template-columns: 44px 1fr; gap: 14px; align-items: center; padding: 22px; border-radius: 22px; background: var(--glass); }
.cmd .n { width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; background: var(--glass-hi); font-weight: 700; }
.cmd p { margin: 0 0 4px; color: var(--dim); font-size: 15px; }
.cmd .kbd { margin-top: 0; }

/* App sheet */
.sheet { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; padding: 16px; }
.sheet[hidden] { display: none; }
.sheet-backdrop { position: absolute; inset: 0; background: #000a; backdrop-filter: blur(30px) saturate(1.4); -webkit-backdrop-filter: blur(30px) saturate(1.4); animation: fade .3s both; }
@keyframes fade { from { opacity: 0; } }
.sheet-card {
  position: relative; width: min(860px, 100%); max-height: calc(100vh - 32px); overflow: auto;
  border-radius: 34px; background: #1c1c1ef0; box-shadow: 0 40px 120px #000, 0 0 0 1px #ffffff14 inset;
  display: grid; grid-template-columns: 260px 1fr; gap: 32px; padding: 36px; animation: pop .45s var(--ease) both;
}
@keyframes pop { from { opacity: 0; transform: scale(.94) translateY(20px); } }
.sheet-card .icon { aspect-ratio: 1; border-radius: 30px; display: grid; place-items: center; background: var(--g); box-shadow: 0 1px 0 #ffffff30 inset, 0 20px 40px #0008; }
.sheet-card .icon svg { width: 42%; height: 42%; color: #fff; }
.sheet-card h2 { font-size: 40px; margin: 0 0 6px; }
.sheet-card .desc { color: var(--dim); margin: 0 0 22px; font-size: 18px; }
.sheet-card .list li { padding: 14px 16px; }
.sheet-card .list li p { font-size: 17px; margin-top: 7px; }
.sheet-card .note { margin-top: 18px; color: var(--faint); font-size: 14px; }
.sheet-card .note code { font-family: var(--mono); color: var(--dim); }
.sheet-card .actions { margin-top: 24px; }

.foot { margin-top: 72px; color: var(--faint); font-size: 13px; display: flex; gap: 18px; flex-wrap: wrap; }
.foot a { text-decoration: underline; text-underline-offset: 3px; }

@media (max-width: 860px) {
  .steps3 { grid-template-columns: 1fr; }
  .steps3 .tile { min-height: 0; flex-direction: row; align-items: center; gap: 16px; justify-content: flex-start; }
  .steps3 .n { margin: 0; }
  .result { grid-template-columns: 1fr; }
  .method { position: static; }
  .sheet-card { grid-template-columns: 1fr; padding: 24px; gap: 20px; }
  .sheet-card .icon { width: 96px; border-radius: 22px; }
}
@media (max-width: 520px) {
  body { font-size: 17px; }
  .lang button { padding: 6px 9px; min-width: 0; }
  .apps { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .app .name { font-size: 15px; }
  .app .sub { display: none; }
  .actions .btn { flex: 1; }
  .dots { display: none; }
  .top { justify-content: space-between; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}