/* ============================================================================================
   VortxKode — the phone layer. Loaded last on every page; everything here is ≤760px only, so the
   desktop design is untouched. Rules of this layer:
   · one column, centred: a chapter reads head → phone → words → cards, all on the centre line
   · lists never stack like a textbook — they become swipeable glass cards (scroll-snap, the next
     card peeks so the swipe is obvious)
   · one phone per chapter, centred, with its colour glowing behind it (no overlapping second phone)
   · tighter vertical rhythm: no screen-tall black gaps between ideas
   ============================================================================================ */
@media (max-width:760px){
  :root{--gut:20px}
  /* the edge shading eats a small screen — keep only a whisper of it so the particles stay lit */
  .vignette{background:radial-gradient(140% 100% at 50% 50%,transparent 70%,rgba(0,0,0,.35))}
  .grain{opacity:.035}

  /* ---------- shared: swipe rails ---------- */
  .feats,.tracks,.honest,.laws{scrollbar-width:none}
  .feats::-webkit-scrollbar,.tracks::-webkit-scrollbar,.honest::-webkit-scrollbar,.laws::-webkit-scrollbar{display:none}

  /* ---------- hero ---------- */
  .hero{padding:96px var(--gut) 8vh;text-align:center}
  .hero-stage{min-height:40vh}
  .hero-copy{align-items:center}
  .kicker{justify-content:center}
  .title{font-size:clamp(62px,19vw,92px)}
  .tag{font-size:21px}
  .hero-foot{align-items:center;gap:24px}
  .hero-foot .lede{max-width:34ch;margin:0 auto;font-size:16px;line-height:1.6}
  .cta{justify-content:center}

  /* ---------- chapters ---------- */
  .chap{padding:11vh var(--gut) 8vh;text-align:center}
  .chap-head{display:flex;flex-direction:column;align-items:center;margin:0 0 4vh}
  .chap-n,.chap .chap-n{margin:0 0 6px;font-size:54px!important}
  .kick{margin-bottom:12px}
  .chap-title{font-size:clamp(32px,9.4vw,42px);line-height:1.06;max-width:12em}
  /* one column exactly the screen wide — grid tracks must never grow to fit their contents */
  .chap-body,.chap.flip .chap-body,.a5{display:grid;grid-template-columns:minmax(0,1fr)!important}
  .chap-copy,.chap-stage,.chap-head,.a5 > *{min-width:0;max-width:100%}
  .chap-copy{display:flex;flex-direction:column;align-items:center;width:100%}
  .chap-copy .lede{max-width:34ch;margin:0 auto;font-size:16px;line-height:1.65;color:#c3cbda}
  .note{text-align:center}

  /* the phone: one, centred, glowing in the chapter's colour */
  .chap-stage{height:auto;margin:0 0 5vh;padding:2vh 0}
  .chap-stage:before{content:'';position:absolute;left:50%;top:44%;width:120%;aspect-ratio:1;transform:translate(-50%,-50%);border-radius:50%;background:radial-gradient(closest-side,color-mix(in srgb,var(--c) 30%,transparent),transparent);filter:blur(26px);z-index:0;pointer-events:none}
  .chap-stage .device{height:min(62vh,540px);margin:0 auto}
  .device.mini{display:none!important}
  .ring{width:min(118vw,520px)}

  /* feature lists → swipeable glass cards */
  .feats{counter-reset:f;display:flex;gap:12px;width:calc(100% + 2 * var(--gut));max-width:none;margin:28px calc(-1 * var(--gut)) 0;padding:6px var(--gut) 18px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-padding:0 var(--gut);-webkit-overflow-scrolling:touch;text-align:left}
  .feats li{counter-increment:f;flex:0 0 80%;scroll-snap-align:start;display:flex;flex-direction:column;gap:10px;padding:20px 20px 22px;border:1px solid color-mix(in srgb,var(--c,#22D3EE) 30%,transparent);border-radius:22px;background:linear-gradient(160deg,color-mix(in srgb,var(--c,#22D3EE) 14%,rgba(8,11,18,.8)),rgba(8,11,18,.82) 60%);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 20px 50px -24px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.05)}
  .feats li:before{content:counter(f,decimal-leading-zero);font-size:34px;line-height:1;font-weight:200;letter-spacing:-.05em;background:linear-gradient(95deg,var(--c,#22D3EE),var(--c2,#5B8CFF));-webkit-background-clip:text;background-clip:text;color:transparent}
  .feats b{font-size:17px;letter-spacing:-.02em}
  .feats b:before{display:none}
  .feats span{font-size:14.5px;line-height:1.6;color:#b4bed2}

  /* instrument cards under the phone */
  .chap-stage .stability,.chap-stage .cal66{position:relative;left:auto;right:auto;bottom:auto;width:100%;max-width:420px;margin:22px auto 0;text-align:left;z-index:4}
  .stability{padding:18px 20px}
  .st-btns{justify-content:center}
  .chap-stage .cal-grid{grid-template-columns:repeat(11,1fr)}

  /* ranks marquee hugs the chapter */
  .ranks{margin-top:6vh}

  /* ---------- neuron dive ---------- */
  .dive-pin{height:auto;min-height:100svh;padding:10vh var(--gut)}
  .dive-window{height:min(60vh,520px)}
  .dive-pin{grid-template-columns:minmax(0,1fr)!important}
  .dive-window{grid-column:1!important}
  .dive-line span{font-size:30px;width:100%;max-width:none;justify-self:center}
  .dek-act .kick,.a4 .kick,.a3 .kick,.a2 .kick{text-align:center;justify-content:center}
  .a4,.a2{text-align:center}
  .a4 .arch-title{text-align:center}

  /* ---------- the DeKoder ---------- */
  .dek-act{padding:11vh var(--gut) 8vh}
  .a1{min-height:auto;text-align:center!important;gap:2vh}
  .a1-copy{display:flex;flex-direction:column;align-items:center}
  .a1-mark{min-height:34vh}
  .dek-title{font-size:clamp(64px,19vw,96px)}
  .a1 .dek-lede{text-align:center;margin:0 auto;max-width:30ch;font-size:19px}
  .think-title,.arch-title,.law-title,.v-title{text-align:center;margin-left:auto;margin-right:auto}
  .think-title{font-size:27px}
  .flow{grid-template-columns:1fr 1fr;gap:26px 14px;text-align:center}
  .step-c .sn{margin:0 auto 14px}
  .step-c h4{font-size:17px}.step-c p{font-size:13.5px}
  .qs{justify-content:center;gap:8px}.qs span{font-size:13px;padding:9px 14px}
  .det-head{flex-direction:column;align-items:center;text-align:center;gap:10px}
  .detectors{grid-template-columns:repeat(2,1fr);gap:8px}
  .detectors li{padding:12px 14px;font-size:13px}
  .det-note{text-align:center;margin-left:auto;margin-right:auto}

  /* three rules → swipeable cards */
  .law-head{text-align:center}
  .laws{display:flex;gap:12px;margin:0 calc(-1 * var(--gut));padding:6px var(--gut) 18px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-padding:0 var(--gut);border-top:0}
  .law,.law:first-child{flex:0 0 86%;scroll-snap-align:start;padding:22px 20px;border:1px solid color-mix(in srgb,var(--c) 30%,transparent);border-radius:24px;background:linear-gradient(170deg,color-mix(in srgb,var(--c) 10%,rgba(8,11,18,.82)),rgba(8,11,18,.85) 55%);backdrop-filter:blur(12px)}
  .law:before{display:none}
  .law-viz{height:130px;margin-bottom:2vh}

  /* honest cards → swipe */
  .honest{display:flex;gap:12px;margin:3vh calc(-1 * var(--gut)) 0;padding:6px var(--gut) 18px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-padding:0 var(--gut)}
  .h-card{flex:0 0 84%;scroll-snap-align:start;min-height:280px}

  /* archetypes */
  .arch{grid-template-columns:1fr;gap:16px;padding:0}
  .arch-grid{grid-template-columns:repeat(3,1fr);gap:7px}
  .arch-grid button{aspect-ratio:auto;min-height:54px;font-size:12px;padding:8px 6px;border-radius:12px}
  .arch-info{text-align:left}

  /* two voices */
  .a5{text-align:center;gap:4vh}
  .a5 .toggle{margin-left:auto;margin-right:auto}
  .voice-text{margin:0 auto}
  .vcard{text-align:left;margin-left:auto;margin-right:auto}

  /* ---------- palettes & sounds ---------- */
  .palettes{grid-template-columns:repeat(2,1fr);width:100%;max-width:420px;margin:26px auto 0;text-align:left}
  /* 9 palettes in 2 columns: the last one sits alone — centre it under the pair above */
  .palettes .pal:last-child:nth-child(odd){grid-column:1/-1;justify-self:center;width:calc(50% - 5px)}
  .tracks{display:grid;grid-auto-flow:column;grid-template-rows:repeat(3,auto);grid-template-columns:none;grid-auto-columns:84%;gap:10px;width:calc(100% + 2 * var(--gut));max-width:none;margin:26px calc(-1 * var(--gut)) 0;padding:4px var(--gut) 16px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-padding:0 var(--gut)}
  .trk{scroll-snap-align:start}

  /* ---------- Focus Guard ---------- */
  .clip{height:auto;width:min(92vw,420px);margin:0 auto}

  /* ---------- film, plans, end ---------- */
  .film{padding:10vh var(--gut)}
  .film-window{border-radius:22px;aspect-ratio:4/5}
  .plans{padding:10vh var(--gut) 8vh;min-height:auto}
  .end-title{text-align:center;font-size:clamp(46px,13vw,64px)}
  .foot .end-cta,.foot .cta{justify-content:center}
  .maker{justify-content:center;text-align:center}
  .maker-by{flex-direction:column;align-items:center;gap:6px}
}

/* ---------- home page on phones: the same centre line ---------- */
@media (max-width:760px){
  .mission,.system,.future{text-align:center}
  .mission,.system,.future,.founder{align-items:center}
  /* the opening mark: clear air between it and "DeKode Your Patterns", even when it pulses */
  .hero-mark{margin-top:78px;margin-bottom:4.5vh;width:min(84vw,50vh)}
  .mission .label,.system .label,.founder .label,.foot .label{justify-content:center}
  .m1{margin-left:auto;margin-right:auto;max-width:22ch}
  .mission .btn,.mission [class*="see"]{margin-left:auto;margin-right:auto}
  .sys-eyebrow{justify-content:center;text-align:center}
  /* "01 NeuralOS" always one line on one baseline, sized to the screen (narrow phones wrapped it) */
  .sys-head{justify-content:center;align-items:baseline;flex-wrap:nowrap;gap:3.5vw}
  .sys-no{font-size:19vw;line-height:.9}
  .system .sys-title{font-size:14.5vw;line-height:1;white-space:nowrap}
  .system .sys-title .split{display:inline}
  .system .lede{margin-left:auto;margin-right:auto;max-width:34ch}
  .system .door{margin-left:auto;margin-right:auto}
  .nx-eyebrow,.nx-name,.nx-soon{justify-content:center}
  .nx-line,.nx-sub{margin-left:auto;margin-right:auto}
  .fname,.frole,.quote,.quote p{text-align:center;margin-left:auto;margin-right:auto}
  .fmail{display:flex;width:max-content;margin-left:auto;margin-right:auto}
  .foot-row{justify-content:center;text-align:center}
}

/* small phones */
@media (max-width:380px){
  .feats li{flex-basis:86%}
  .arch-grid{grid-template-columns:repeat(2,1fr)}
}