/* ============================================================
   NAVA — anime × 90s-geek × CRT-terminal × Final Fantasy menu
   Vanilla CSS, no build step.
   ============================================================ */

/* ---------- Tokens ---------- */
:root{
  --bg:#0a0e14;
  --bg-2:#111826;
  --bg-3:#0d131e;
  --phosphor:#39ff14;
  --phosphor-soft:#7CFFB2;
  --crystal:#4cc9f0;
  --crystal-deep:#1f6feb;
  --gold:#ffd166;
  --magenta:#ff5dd2;
  --ink:#e6edf3;
  /* muted raised for >=4.5:1 contrast on the dark grounds (was #8b98a5) */
  --muted:#a7b4c4;
  --muted-soft:#c2ccd8;
  --line:rgba(76,201,240,.18);
  --line-strong:rgba(76,201,240,.4);
  --focus:#ffd166;

  --serif:'Cinzel', serif;
  --mono:'JetBrains Mono', ui-monospace, monospace;
  --crt:'VT323', monospace;
  --sans:'Inter', system-ui, sans-serif;

  --container:1180px;
  --radius:14px;
  --ease:cubic-bezier(.2,.7,.2,1);

  --glow-crystal:0 0 18px rgba(76,201,240,.45);
  --glow-magenta:0 0 22px rgba(255,93,210,.45);
  --glow-phosphor:0 0 14px rgba(57,255,20,.55);
  --glow-gold:0 0 16px rgba(255,209,102,.55);
}

/* ---------- Reset / base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
html:focus-within{scroll-padding-top:90px}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
/* layered ambient backdrop */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(1100px 700px at 78% -8%, rgba(255,93,210,.10), transparent 60%),
    radial-gradient(900px 700px at 8% 12%, rgba(76,201,240,.12), transparent 60%),
    radial-gradient(1200px 900px at 50% 120%, rgba(31,111,235,.16), transparent 55%),
    var(--bg);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3{margin:0;line-height:1.1}
p{margin:0}
kbd{
  font-family:var(--mono);font-size:.82em;padding:.12em .5em;border-radius:6px;
  background:#1b2433;border:1px solid var(--line-strong);
  box-shadow:0 1px 0 rgba(0,0,0,.5),inset 0 0 0 1px rgba(255,255,255,.03);
  color:var(--phosphor-soft);white-space:nowrap;
}
code{font-family:var(--mono);font-size:.9em;color:var(--phosphor-soft)}
::selection{background:rgba(255,209,102,.3);color:#fff}

/* Clear, consistent keyboard focus ring on every interactive element */
:focus-visible{
  outline:2px solid var(--focus);
  outline-offset:3px;
  border-radius:6px;
  box-shadow:0 0 0 4px rgba(255,209,102,.22);
}
a:focus-visible,.ff-item:focus-visible,.btn:focus-visible,
.tab:focus-visible,.copy-btn:focus-visible,.nav-toggle:focus-visible,
.doc-link:focus-visible{outline-offset:3px}
/* never show the ring for mouse users on these */
:focus:not(:focus-visible){outline:none}

.visually-hidden,.skip-link:not(:focus){
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;background:var(--crystal-deep);
  color:#fff;padding:.6rem 1rem;border-radius:8px;font-family:var(--mono);
}

/* ============================================================
   CRT / atmosphere overlays
   ============================================================ */
.crt-scanlines,.crt-vignette,.crt-flicker,.particles{
  position:fixed;inset:0;pointer-events:none;z-index:90;
}
.crt-scanlines{
  background:repeating-linear-gradient(
    to bottom, rgba(0,0,0,0) 0 2px, rgba(0,0,0,.22) 2px 3px);
  mix-blend-mode:multiply;opacity:.5;
}
.crt-vignette{
  background:radial-gradient(120% 120% at 50% 50%, transparent 58%, rgba(0,0,0,.55) 100%);
}
.crt-flicker{
  background:rgba(120,200,255,.025);animation:flicker 6s steps(60) infinite;
}
.particles{z-index:1;opacity:.55}
@keyframes flicker{
  0%,100%{opacity:.02}
  3%{opacity:.06}
  6%{opacity:.01}
  9%{opacity:.05}
  50%{opacity:.03}
  72%{opacity:.07}
}

/* ============================================================
   Layout helpers
   ============================================================ */
.section{
  max-width:var(--container);margin-inline:auto;
  padding:clamp(4.5rem,9vw,8rem) clamp(1.1rem,4vw,2rem);
  position:relative;z-index:2;
}
.section--alt{max-width:none;margin:0;
  background-color:rgba(76,201,240,.018);
  background-image:
    radial-gradient(rgba(76,201,240,.07) 1px, transparent 1.4px),
    linear-gradient(180deg, transparent, rgba(31,111,235,.05) 12%, rgba(31,111,235,.05) 88%, transparent);
  background-size:26px 26px, 100% 100%;
  border-block:1px solid var(--line);}
.section--alt > *{max-width:var(--container);margin-inline:auto}

/* hairline crystal divider crowning each plain content section → page rhythm */
.section:not(.section--alt)::after{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:min(var(--container),90%);height:1px;pointer-events:none;
  background:linear-gradient(90deg,transparent,var(--line-strong),transparent);
}

.section-head{position:relative;max-width:760px;margin-bottom:clamp(2.4rem,4vw,3.6rem)}
/* faint crystal/materia glow blooming behind each section header */
.section-head::before{
  content:"";position:absolute;left:-8px;top:-14px;width:130px;height:130px;
  z-index:-1;pointer-events:none;border-radius:50%;
  background:radial-gradient(circle, rgba(76,201,240,.28), rgba(255,93,210,.1) 45%, transparent 72%);
  filter:blur(8px);opacity:.7;animation:materia 6s ease-in-out infinite;
}
@keyframes materia{50%{opacity:.35;transform:scale(1.18)}}
.kicker{
  font-family:var(--mono);font-size:.8rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--phosphor);text-shadow:var(--glow-phosphor);margin-bottom:1rem;
}
.section-title{
  font-family:var(--serif);font-weight:700;
  font-size:clamp(2rem,5.4vw,3.4rem);letter-spacing:.01em;
  background:linear-gradient(180deg,#fff, #cfe9ff 55%, var(--crystal));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 0 40px rgba(76,201,240,.18);
}
.section-lede{margin-top:1.1rem;color:var(--muted);font-size:clamp(1rem,1.6vw,1.18rem);max-width:62ch}
.section-lede code,.section-lede kbd{color:var(--phosphor-soft)}

/* ============================================================
   Nav — Final Fantasy command menu
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:100;
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  background:linear-gradient(180deg, rgba(10,14,20,.92), rgba(10,14,20,.55));
  border-bottom:1px solid var(--line);
}
.nav{
  max-width:var(--container);margin-inline:auto;
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding:.7rem clamp(1.1rem,4vw,2rem);
}
.brand{display:flex;align-items:center;gap:.55rem;font-family:var(--serif);font-weight:800;
  font-size:1.32rem;letter-spacing:.16em}
.brand-glyph{color:var(--crystal);text-shadow:var(--glow-crystal);animation:spin-glyph 9s linear infinite}
.brand-word{background:linear-gradient(90deg,var(--crystal),#fff 60%,var(--magenta));
  -webkit-background-clip:text;background-clip:text;color:transparent}
/* header wordmark: solid white (hero wordmark + footer keep their own styling) */
.brand .brand-word{background:none;-webkit-background-clip:border-box;background-clip:border-box;
  color:#fff;-webkit-text-fill-color:#fff}
@keyframes spin-glyph{to{transform:rotate(360deg)}}

.ff-menu{list-style:none;margin:0;padding:0}
.nav-menu{display:flex;align-items:center;gap:.2rem}
.ff-item{
  position:relative;display:inline-flex;align-items:center;gap:.4rem;
  font-family:var(--mono);font-size:.92rem;font-weight:500;color:var(--muted);
  padding:.5rem .85rem;border-radius:8px;border:1px solid transparent;
  transition:color .2s,background .2s,border-color .2s;cursor:pointer;background:none;
}
.ff-item .ff-cursor{
  color:var(--gold);opacity:0;transform:translateX(-6px);
  transition:opacity .18s var(--ease),transform .18s var(--ease);
  text-shadow:var(--glow-gold);font-size:.8em;
}
.ff-item:hover,.ff-item:focus-visible,.ff-item.is-active,
.ff-item[aria-selected="true"]{
  color:var(--ink);background:rgba(76,201,240,.08);border-color:var(--line);outline:none;
}
.ff-item:hover .ff-cursor,.ff-item:focus-visible .ff-cursor,
.ff-item.is-active .ff-cursor,.ff-item[aria-selected="true"] .ff-cursor{
  opacity:1;transform:translateX(0);
}
/* the active nav item's gold cursor gently bobs, FF-menu style */
.ff-item.is-active .ff-cursor{animation:cursor-bob 1.15s ease-in-out infinite}
@keyframes cursor-bob{0%,100%{transform:translateX(0)}50%{transform:translateX(4px)}}
.ff-item--ext{color:var(--crystal)}

.nav-toggle{
  display:none;flex-direction:column;gap:5px;background:none;border:1px solid var(--line);
  border-radius:8px;padding:.55rem;cursor:pointer;
}
.nav-toggle span{width:22px;height:2px;background:var(--ink);transition:.25s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position:relative;min-height:100svh;display:flex;align-items:center;
  padding:7rem clamp(1.1rem,4vw,2rem) 5rem;overflow:hidden;
}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-anime{
  --py:0px;
  position:absolute;top:-4%;right:0;height:108%;width:min(60%,760px);
  object-fit:cover;object-position:72% 18%;
  /* fade ALL outer edges so there's no hard crop line anywhere */
  -webkit-mask-image:
    linear-gradient(90deg,transparent,#000 42%),
    linear-gradient(0deg,transparent 2%,#000 16%,#000 88%,transparent 99%);
          mask-image:
    linear-gradient(90deg,transparent,#000 42%),
    linear-gradient(0deg,transparent 2%,#000 16%,#000 88%,transparent 99%);
  -webkit-mask-composite:source-in;mask-composite:intersect;
  filter:saturate(1.05) contrast(1.02);
  /* parallax (--py set by JS) + gentle breathing scale */
  transform:scale(1.04) translateY(var(--py));
  will-change:transform;
  animation:hero-breathe 20s ease-in-out infinite alternate;
}
/* breathing uses a separate property so it never fights the JS transform */
@keyframes hero-breathe{from{filter:saturate(1.05) contrast(1.02) brightness(1)}
  to{filter:saturate(1.12) contrast(1.04) brightness(1.04)}}
.hero-grad{
  position:absolute;inset:0;
  background:
    linear-gradient(90deg, var(--bg) 24%, rgba(10,14,20,.72) 46%, rgba(10,14,20,.25) 70%, rgba(10,14,20,.55)),
    linear-gradient(0deg, var(--bg) 4%, transparent 38%),
    radial-gradient(60% 50% at 80% 30%, rgba(255,93,210,.18), transparent 70%);
}
.hero-grid{
  position:absolute;inset:0;opacity:.5;
  background-image:
    linear-gradient(rgba(76,201,240,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(76,201,240,.07) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(120% 100% at 30% 60%, #000, transparent 75%);
          mask-image:radial-gradient(120% 100% at 30% 60%, #000, transparent 75%);
}
.hero-inner{position:relative;z-index:2;max-width:680px;width:100%}

.hero-eyebrow{
  display:inline-flex;align-items:center;gap:.6rem;font-family:var(--mono);
  font-size:.82rem;letter-spacing:.14em;text-transform:uppercase;color:var(--phosphor-soft);
  padding:.4rem .85rem;border:1px solid var(--line-strong);border-radius:999px;
  background:rgba(57,255,20,.05);
}
.dot-live{width:8px;height:8px;border-radius:50%;background:var(--phosphor);
  box-shadow:var(--glow-phosphor);animation:pulse 1.8s ease-in-out infinite}
@keyframes pulse{50%{opacity:.35;transform:scale(.7)}}

.hero-title{margin:1.4rem 0 .4rem}
.wordmark{display:inline-flex;align-items:baseline;font-family:var(--serif);font-weight:800;
  font-size:clamp(4rem,16vw,10rem);line-height:.9;letter-spacing:.04em}
.wordmark-main{
  background:linear-gradient(180deg,#fff 0%, #bfe6ff 40%, var(--crystal) 70%, var(--crystal-deep));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 0 26px rgba(76,201,240,.45));
  animation:shimmer 5s ease-in-out infinite;
}
@keyframes shimmer{50%{filter:drop-shadow(0 0 40px rgba(255,93,210,.5))}}
.wordmark-cursor{color:var(--phosphor);text-shadow:var(--glow-phosphor);
  animation:blink 1.05s steps(1) infinite;font-family:var(--mono)}
@keyframes blink{50%{opacity:0}}

.hero-tagline{
  font-family:var(--serif);font-size:clamp(1.4rem,3.4vw,2.2rem);font-weight:600;
  color:var(--ink);text-shadow:0 0 30px rgba(76,201,240,.25);margin-bottom:1.3rem;
}

/* typed boot block */
.boot{
  border-left:2px solid var(--phosphor);padding:.5rem 0 .5rem 1rem;margin-bottom:1.8rem;
  min-height:5.2em;
}
.boot-stream{
  margin:0;font-family:var(--crt);font-size:clamp(1.05rem,2vw,1.45rem);line-height:1.45;
  color:var(--phosphor-soft);text-shadow:0 0 8px rgba(124,255,178,.4);white-space:pre-wrap;
}
.boot-stream .ok{color:var(--phosphor)}
.boot-stream .dim{color:var(--muted)}
.boot-caret{color:var(--phosphor);animation:blink 1s steps(1) infinite}

.hero-cta{display:flex;flex-wrap:wrap;gap:.9rem;margin-bottom:2.6rem}

/* Buttons */
.btn{
  --bd:var(--line-strong);
  display:inline-flex;align-items:center;gap:.55rem;font-family:var(--mono);font-weight:500;
  font-size:.98rem;padding:.85rem 1.5rem;border-radius:10px;border:1px solid var(--bd);
  cursor:pointer;position:relative;overflow:hidden;transition:transform .18s var(--ease),
  box-shadow .25s,border-color .25s,background .25s;color:var(--ink);
}
.btn-glyph{color:inherit}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--primary{
  background:linear-gradient(135deg,var(--crystal),var(--crystal-deep));
  border-color:transparent;color:#04121f;font-weight:700;
  box-shadow:var(--glow-crystal),0 8px 24px rgba(31,111,235,.35);
}
.btn--primary:hover{box-shadow:0 0 28px rgba(76,201,240,.7),0 10px 30px rgba(31,111,235,.45)}
.btn--ghost{background:rgba(76,201,240,.05)}
.btn--ghost:hover{border-color:var(--crystal);box-shadow:var(--glow-crystal)}
.btn--gold{
  background:linear-gradient(135deg,var(--gold),#f4a93c);color:#241500;font-weight:700;
  border-color:transparent;box-shadow:var(--glow-gold),0 8px 22px rgba(255,209,102,.3);
}
.btn--gold:hover{box-shadow:0 0 30px rgba(255,209,102,.7)}

/* hero stats */
.hero-stats{
  display:flex;flex-wrap:wrap;gap:clamp(1.2rem,4vw,3rem);margin:0;
  padding-top:1.6rem;border-top:1px solid var(--line);
}
.hero-stats div{display:flex;flex-direction:column-reverse;gap:.2rem}
.hero-stats dt{font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.hero-stats dd{margin:0;font-family:var(--serif);font-weight:700;font-size:1.7rem;color:var(--gold);text-shadow:var(--glow-gold)}
.hero-stats dd span{font-family:var(--mono);font-size:.9rem;color:var(--muted);margin-left:.25rem;text-shadow:none;font-weight:400}

.scroll-hint{
  position:absolute;bottom:1.4rem;left:50%;transform:translateX(-50%);z-index:2;
  display:flex;flex-direction:column;align-items:center;gap:.3rem;
  font-family:var(--mono);font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);
}
.scroll-arrow{animation:bob 1.8s ease-in-out infinite;color:var(--crystal)}
@keyframes bob{50%{transform:translateY(6px)}}

/* ============================================================
   FF command-window cards
   ============================================================ */
.card-grid{
  list-style:none;margin:0;padding:0;display:grid;gap:1.2rem;
  grid-template-columns:repeat(2,1fr);
}
.card-grid--3{grid-template-columns:repeat(3,1fr)}

.ff-card{
  position:relative;padding:1.6rem 1.6rem 1.7rem;border-radius:var(--radius);
  background:
    linear-gradient(180deg, rgba(31,111,235,.18), rgba(13,19,30,.9));
  /* crisp outer rule of the FF command window */
  border:1.5px solid var(--line-strong);
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.04),
    inset 0 0 22px rgba(31,111,235,.12),
    0 14px 30px rgba(0,0,0,.35);
  overflow:hidden;transition:transform .25s var(--ease),box-shadow .3s,border-color .3s;
}
/* Inner corner-bracket frame: draw a rounded inset border, then mask it down
   to just its four corners → the classic FF menu bracket accents. */
.ff-card::before{
  content:"";position:absolute;inset:7px;pointer-events:none;border-radius:10px;
  border:1.5px solid rgba(124,201,240,.5);
  -webkit-mask:
    linear-gradient(#000,#000) 0 0/17px 17px no-repeat,
    linear-gradient(#000,#000) 100% 0/17px 17px no-repeat,
    linear-gradient(#000,#000) 0 100%/17px 17px no-repeat,
    linear-gradient(#000,#000) 100% 100%/17px 17px no-repeat;
          mask:
    linear-gradient(#000,#000) 0 0/17px 17px no-repeat,
    linear-gradient(#000,#000) 100% 0/17px 17px no-repeat,
    linear-gradient(#000,#000) 0 100%/17px 17px no-repeat,
    linear-gradient(#000,#000) 100% 100%/17px 17px no-repeat;
  transition:border-color .3s;
}
/* gold ► selection cursor slides in on hover */
.ff-card::after{
  content:"►";position:absolute;top:1.75rem;left:-1.2rem;color:var(--gold);
  text-shadow:var(--glow-gold);opacity:0;transition:.25s var(--ease);
  font-size:.9rem;z-index:2;
}
.ff-card:hover{
  transform:translateY(-4px);border-color:var(--crystal);
  box-shadow:
    inset 0 0 22px rgba(76,201,240,.18),
    var(--glow-crystal),0 22px 44px rgba(0,0,0,.45);
}
.ff-card:hover::before{border-color:var(--gold)}
.ff-card:hover::after{opacity:1;left:.7rem}
.ff-card:hover .ff-card-title{padding-left:1.15rem}
.ff-card-title{transition:padding-left .25s var(--ease)}

.ff-card-bar{display:flex;align-items:center;gap:.6rem;margin-bottom:.9rem}
.ff-card-glyph{
  display:grid;place-items:center;width:34px;height:34px;border-radius:9px;
  background:rgba(76,201,240,.12);border:1px solid var(--line-strong);
  color:var(--crystal);font-size:1.05rem;text-shadow:var(--glow-crystal);
}
.ff-card-tag{font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.ff-card-title{font-family:var(--serif);font-weight:600;font-size:1.3rem;margin-bottom:.5rem;color:#fff}
.ff-card p{color:var(--muted);font-size:.97rem}
.ff-card code{color:var(--phosphor-soft)}

/* link cards (support) */
.ff-card--link{cursor:default}
.ff-card-hit{position:absolute;inset:0;z-index:3}
.ff-card--link:has(.ff-card-hit):hover{cursor:pointer}
.doc-arrow{color:var(--crystal);font-size:.85em}

/* ============================================================
   Privacy window  +  generic FF window chrome
   ============================================================ */
.ff-window{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line-strong);
  background:linear-gradient(180deg, rgba(31,111,235,.12), rgba(13,19,30,.92));
  box-shadow:0 18px 40px rgba(0,0,0,.4);
}
.ff-window-bar{
  display:flex;align-items:center;gap:.55rem;padding:.6rem 1rem;
  background:linear-gradient(180deg, rgba(76,201,240,.16), rgba(76,201,240,.04));
  border-bottom:1px solid var(--line);font-family:var(--mono);font-size:.8rem;color:var(--muted);
}
.ff-window-dot{width:10px;height:10px;border-radius:50%;background:var(--crystal);box-shadow:var(--glow-crystal);opacity:.8}

.privacy{margin-top:1.2rem}
.privacy-body{display:flex;gap:1.2rem;align-items:flex-start;padding:1.5rem}
.privacy-glyph{font-size:2.2rem;filter:drop-shadow(0 0 10px rgba(57,255,20,.5))}
.privacy-title{font-family:var(--serif);font-size:1.4rem;color:#fff;margin-bottom:.5rem}
.privacy p{color:var(--muted)}
.privacy strong{color:var(--phosphor-soft)}

/* ============================================================
   Install — tabs + terminals
   ============================================================ */
.installer{margin-bottom:2.6rem}
.tablist{
  display:flex;flex-wrap:wrap;gap:.35rem;padding:.4rem;border:1px solid var(--line);
  border-radius:12px;background:rgba(13,19,30,.6);margin-bottom:1rem;width:fit-content;max-width:100%;
}
.tab{font-size:.9rem}

/* ---- Install redesign: prominent platform selector + per-platform step guides ---- */
/* keep the selector clear of the sticky nav when jumping to #install */
#install{scroll-margin-top:96px}
.platform-select-label{
  font-family:var(--mono);font-size:.82rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--muted);margin-bottom:.9rem;
}
.platform-select{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.9rem;margin-bottom:2.4rem;
}
.platform-card{
  position:relative;display:flex;flex-direction:column;gap:.3rem;text-align:left;cursor:pointer;
  padding:1.15rem 1.15rem 1.25rem 1.6rem;border-radius:var(--radius);color:var(--ink);
  border:1.5px solid var(--line-strong);
  background:linear-gradient(180deg,rgba(31,111,235,.16),rgba(13,19,30,.9));
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.03),0 10px 24px rgba(0,0,0,.3);
  transition:transform .2s var(--ease),box-shadow .3s,border-color .3s,background .3s;
}
.platform-card:hover{
  transform:translateY(-3px);border-color:var(--crystal);
  box-shadow:var(--glow-crystal),0 16px 34px rgba(0,0,0,.42);
}
.platform-card-cursor{
  position:absolute;left:.62rem;top:1.3rem;color:var(--gold);text-shadow:var(--glow-gold);
  font-size:.85rem;opacity:0;transform:translateX(-4px);transition:.22s var(--ease);
}
.platform-card[aria-selected="true"]{
  border-color:var(--gold);
  background:linear-gradient(180deg,rgba(255,209,102,.13),rgba(13,19,30,.92));
  box-shadow:var(--glow-gold),inset 0 0 22px rgba(255,209,102,.09),0 16px 36px rgba(0,0,0,.42);
}
.platform-card[aria-selected="true"] .platform-card-cursor{opacity:1;transform:none}
.platform-card-glyph{
  font-size:1.35rem;line-height:1;margin-bottom:.15rem;
  color:var(--crystal);text-shadow:var(--glow-crystal);
}
.platform-card[aria-selected="true"] .platform-card-glyph{color:var(--gold);text-shadow:var(--glow-gold)}
.platform-card-os{font-family:var(--serif);font-weight:600;font-size:1.16rem;color:#fff}
.platform-card-who{font-family:var(--mono);font-size:.76rem;line-height:1.45;color:var(--muted)}

/* per-platform step-by-step guide */
.guide{animation:panel-in .35s var(--ease) both}
.guide > .panel-note{margin-bottom:1.6rem}
.steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:1.5rem}
.step{position:relative;display:grid;grid-template-columns:auto minmax(0,1fr);gap:1.1rem;align-items:start}
/* connector line linking the step badges */
.step:not(:last-child)::before{
  content:"";position:absolute;left:20px;top:48px;bottom:-1.5rem;width:2px;pointer-events:none;
  background:linear-gradient(180deg,var(--line-strong),transparent);
}
.step-num{
  position:relative;z-index:1;display:grid;place-items:center;width:42px;height:42px;border-radius:11px;
  font-family:var(--serif);font-weight:700;font-size:1.28rem;color:#04121f;
  background:linear-gradient(135deg,var(--crystal),var(--crystal-deep));box-shadow:var(--glow-crystal);
}
.step-body{min-width:0}
.step-title{font-family:var(--serif);font-weight:600;font-size:1.18rem;color:#fff;margin:.35rem 0 .7rem}
.step-download{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem}
.btn--dl{white-space:normal;overflow-wrap:anywhere;text-align:center}
.step-note{color:var(--muted);font-size:.9rem;margin-top:.6rem}
.step-note code{color:var(--phosphor-soft)}
.step-sub-link{font-family:var(--mono);font-size:.82rem;color:var(--crystal)}
.step-sub-link:hover{text-decoration:underline}

/* a step that must not be missed (log out · permissions) */
.step--important .step-num{
  background:linear-gradient(135deg,var(--gold),#f4a93c);color:#241500;box-shadow:var(--glow-gold);
}
.step-callout{
  border:1px solid rgba(255,209,102,.5);background:rgba(255,209,102,.08);border-radius:11px;
  padding:.9rem 1.05rem;color:var(--muted-soft);font-size:.96rem;line-height:1.55;
}
.step-callout strong{color:var(--gold)}
.step-callout code{color:var(--phosphor-soft)}

/* collapsible "other install methods" */
.more-methods{margin-top:2.2rem;border-top:1px solid var(--line);padding-top:1.3rem}
.more-methods > summary{
  cursor:pointer;list-style:none;display:inline-flex;align-items:center;gap:.55rem;
  font-family:var(--mono);font-size:.92rem;color:var(--crystal);padding:.4rem .2rem;
  border-radius:8px;transition:color .2s;
}
.more-methods > summary::-webkit-details-marker{display:none}
.more-methods > summary::before{content:"▸";color:var(--gold);transition:transform .2s var(--ease)}
.more-methods[open] > summary::before{transform:rotate(90deg)}
.more-methods > summary:hover{color:#fff}
.more-methods-body{padding-top:1.2rem;display:flex;flex-direction:column;gap:1.5rem}
.more-method-title{
  font-family:var(--serif);font-weight:600;font-size:1.06rem;color:#fff;margin-bottom:.6rem;
  display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;
}

@media (max-width:900px){.platform-select{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.platform-select{grid-template-columns:1fr}}

.tabpanel{animation:panel-in .35s var(--ease) both}
@keyframes panel-in{from{opacity:0;transform:translateY(8px)}}
.panel-note{color:var(--muted);font-size:.92rem;margin-bottom:.9rem}
.panel-note code{color:var(--phosphor-soft)}
.panel-sub{color:var(--muted);font-size:.88rem;margin:1.1rem 0 .7rem;font-family:var(--mono)}
.badge-exp{
  font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--magenta);border:1px solid rgba(255,93,210,.5);border-radius:6px;
  padding:.1rem .45rem;margin-right:.5rem;background:rgba(255,93,210,.08);
}

/* terminal window */
.terminal{
  border-radius:12px;overflow:hidden;border:1px solid var(--line-strong);
  background:#070b11;box-shadow:0 16px 40px rgba(0,0,0,.5),inset 0 0 60px rgba(31,111,235,.05);
}
.terminal + .terminal{margin-top:.7rem}
.terminal-bar{
  display:flex;align-items:center;gap:.5rem;padding:.6rem .9rem;
  background:linear-gradient(180deg,#161d2a,#0e141f);border-bottom:1px solid var(--line);
}
.tl{width:12px;height:12px;border-radius:50%}
.tl--r{background:#ff5f57}.tl--y{background:#febc2e}.tl--g{background:#28c840}
.terminal-title{font-family:var(--mono);font-size:.78rem;color:var(--muted);margin-left:.4rem}
.copy-btn{
  margin-left:auto;display:inline-flex;align-items:center;gap:.4rem;cursor:pointer;
  font-family:var(--mono);font-size:.76rem;color:var(--crystal);
  background:rgba(76,201,240,.1);border:1px solid var(--line-strong);
  border-radius:7px;padding:.32rem .65rem;transition:.2s var(--ease);
}
.copy-btn:hover{background:rgba(76,201,240,.2);box-shadow:var(--glow-crystal)}
.copy-btn.is-copied{color:var(--phosphor);border-color:var(--phosphor);background:rgba(57,255,20,.12)}
.terminal-body{
  margin:0;padding:1.05rem 1.1rem;overflow-x:auto;font-family:var(--mono);
  font-size:.88rem;line-height:1.75;color:var(--ink);
}
.terminal-body .ln{display:block}
.terminal-body .prompt{color:var(--crystal);user-select:none;margin-right:.6rem}
.terminal-body .cmt{color:var(--muted)}
.terminal-body code{color:inherit;font-size:inherit}

/* requirements table */
.reqs-title{font-family:var(--serif);font-size:1.3rem;color:#fff;margin-bottom:1rem}
.reqs-sub{font-family:var(--mono);font-size:.82rem;color:var(--muted);font-weight:400}
.ff-cursor-static{color:var(--gold);text-shadow:var(--glow-gold);font-size:.8em}
.reqs-foot{margin-top:1rem;color:var(--muted);font-size:.9rem}

.table-wrap{overflow-x:auto;border-radius:12px;border:1px solid var(--line);
  background:rgba(13,19,30,.6)}
.data-table{width:100%;border-collapse:collapse;font-size:.92rem;min-width:520px}
.data-table th,.data-table td{padding:.8rem 1rem;text-align:left;border-bottom:1px solid var(--line)}
.data-table thead th{
  font-family:var(--mono);font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--phosphor);background:rgba(57,255,20,.05);position:sticky;top:0;
}
.data-table tbody tr{transition:background .2s}
.data-table tbody tr:hover{background:rgba(76,201,240,.06)}
.data-table tbody tr:last-child th,.data-table tbody tr:last-child td{border-bottom:0}
.data-table th[scope="row"]{font-weight:500;color:var(--ink)}
.data-table code{color:var(--phosphor-soft);white-space:nowrap}

/* commands */
.cmd-window{margin-bottom:1.6rem}
.cmd-table{min-width:560px}
.cmd-table .table-wrap{border:0;background:none}

.doc-links{display:flex;flex-wrap:wrap;gap:.7rem}
.doc-link{
  display:inline-flex;align-items:center;gap:.5rem;font-family:var(--mono);font-size:.9rem;
  padding:.7rem 1.1rem;border-radius:10px;border:1px solid var(--line-strong);
  background:rgba(76,201,240,.05);color:var(--ink);transition:.22s var(--ease);
}
.doc-link .doc-glyph{color:var(--crystal)}
.doc-link:hover{border-color:var(--crystal);box-shadow:var(--glow-crystal);transform:translateY(-2px)}
.doc-link .doc-arrow{color:var(--muted)}

/* ============================================================
   Donate — save point
   ============================================================ */
.donate{display:grid;grid-template-columns:auto 1fr;gap:clamp(1.5rem,5vw,3.5rem);align-items:center}
.save-point{position:relative;width:160px;height:160px;display:grid;place-items:center;flex-shrink:0}
.save-crystal{
  width:64px;height:90px;
  background:linear-gradient(160deg,#bff0ff,var(--crystal) 40%,var(--crystal-deep));
  clip-path:polygon(50% 0,100% 30%,82% 100%,18% 100%,0 30%);
  box-shadow:var(--glow-crystal);filter:drop-shadow(0 0 22px rgba(76,201,240,.6));
  animation:crystal-float 3.6s ease-in-out infinite;
}
@keyframes crystal-float{50%{transform:translateY(-10px) rotate(2deg)}}
.save-ring{
  position:absolute;inset:0;border-radius:50%;
  border:2px solid rgba(76,201,240,.4);
  box-shadow:0 0 30px rgba(76,201,240,.3) inset;
  animation:ring-pulse 3.6s ease-in-out infinite;
}
@keyframes ring-pulse{50%{transform:scale(1.12);opacity:.4}}

.donate-cta{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:1.8rem}
.donate-note{margin-top:1rem;font-family:var(--mono);font-size:.78rem;color:var(--muted)}
.soon{font-size:.72em;opacity:.7;letter-spacing:.02em}
[data-todo]{opacity:.78}
[data-todo]:hover{opacity:1}

/* ============================================================
   Footer
   ============================================================ */
.site-footer{
  position:relative;z-index:2;border-top:1px solid var(--line);
  background:linear-gradient(180deg, transparent, rgba(13,19,30,.7));
  padding:clamp(2.5rem,5vw,3.6rem) clamp(1.1rem,4vw,2rem) 2.4rem;
  margin-top:2rem;
}
.footer-prompt{
  max-width:var(--container);margin:0 auto 2.2rem;font-family:var(--mono);font-size:.9rem;
  padding:1rem 1.2rem;border:1px solid var(--line);border-radius:10px;background:#070b11;
  overflow-x:auto;white-space:nowrap;
}
.footer-prompt .prompt{color:var(--crystal);margin-right:.7rem}
.footer-typed{color:var(--phosphor-soft)}
.footer-caret{color:var(--phosphor);animation:blink 1.05s steps(1) infinite;margin-left:.1rem}

.footer-grid{
  max-width:var(--container);margin:0 auto;display:flex;flex-wrap:wrap;gap:2rem;
  justify-content:space-between;align-items:flex-start;
}
.footer-brand{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;font-family:var(--serif);font-weight:800;font-size:1.2rem;letter-spacing:.14em}
.footer-tag{flex-basis:100%;font-family:var(--sans);font-weight:400;font-size:.88rem;letter-spacing:normal;color:var(--muted);margin-top:.3rem}
.footer-links{display:flex;flex-wrap:wrap;gap:1.1rem;font-family:var(--mono);font-size:.88rem}
.footer-links a{color:var(--muted);transition:color .2s}
.footer-links a:hover{color:var(--crystal)}
.footer-badge{display:flex;align-items:center;gap:.5rem;font-family:var(--mono);font-size:.84rem;
  color:var(--ink);border:1px solid var(--line-strong);border-radius:999px;padding:.45rem .9rem;background:rgba(76,201,240,.05)}
.footer-fine{max-width:var(--container);margin:2rem auto 0;font-size:.78rem;color:var(--muted);
  padding-top:1.4rem;border-top:1px solid var(--line)}

/* ============================================================
   Reveal animations (staggered via JS-set --d)
   ============================================================ */
[data-reveal]{
  opacity:0;transform:translateY(26px);
  transition:opacity .7s var(--ease),transform .7s var(--ease);
  transition-delay:var(--d,0ms);
}
[data-reveal].is-in{opacity:1;transform:none}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width:920px){
  .card-grid,.card-grid--3{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .nav-toggle{display:flex}
  .nav-menu{
    position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;
    gap:.2rem;padding:.7rem clamp(1.1rem,4vw,2rem) 1.1rem;
    background:rgba(10,14,20,.97);border-bottom:1px solid var(--line);
    backdrop-filter:blur(12px);
    transform:translateY(-12px);opacity:0;pointer-events:none;transition:.25s var(--ease);
  }
  .nav-menu.is-open{transform:none;opacity:1;pointer-events:auto}
  .ff-item{padding:.7rem .85rem}
  .ff-item .ff-cursor{opacity:1;transform:none} /* always show on mobile menu */

  .hero{min-height:auto;padding-top:5.5rem}
  .hero-anime{width:100%;object-position:65% 12%;opacity:.55;
    -webkit-mask-image:linear-gradient(180deg,#000 8%,transparent 78%);
            mask-image:linear-gradient(180deg,#000 8%,transparent 78%);}
  .hero-grad{background:
    linear-gradient(0deg, var(--bg) 18%, rgba(10,14,20,.6) 55%, rgba(10,14,20,.85)),
    radial-gradient(70% 50% at 70% 18%, rgba(255,93,210,.2), transparent 70%);}
  .hero-stats{gap:1.4rem}

  .card-grid,.card-grid--3{grid-template-columns:1fr}
  .donate{grid-template-columns:1fr;justify-items:center;text-align:center}
  .donate-cta,.donate .kicker{justify-content:center}
  .privacy-body{flex-direction:column}
}
@media (max-width:420px){
  .hero-stats div{flex-basis:100%}
  .btn{width:100%;justify-content:center}
  .hero-cta{flex-direction:column}
}

/* ============================================================
   Reduced motion — kill heavy animation, keep things visible
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;scroll-behavior:auto!important;
  }
  [data-reveal]{opacity:1!important;transform:none!important}
  .crt-flicker,.particles{display:none}
  .hero-anime{animation:none}
  .wordmark-cursor,.footer-caret,.boot-caret{animation:none}
}