/* The comparison photo, cropped to the two photographs (1448x697 of 1448x1086). */
.compare .photos{aspect-ratio:1448/697;overflow:hidden}
.compare .photos img{width:100%;height:auto}

/* The live strip: a phone that scans, and four big steps that light with it.
   JS steps the state; every visual change is a transition or a one-shot
   animation keyed off the classes it sets, so nothing runs on its own clock. */
.demo{display:grid;grid-template-columns:minmax(0,300px) minmax(0,1fr);gap:56px;align-items:center;
  margin:18px 0 64px;padding:40px;border-radius:24px;border:1px solid var(--line2);
  background:radial-gradient(60% 80% at 20% 50%,rgba(61,123,255,.14),transparent 70%),
             linear-gradient(180deg,var(--surf2),var(--surf))}
@media (max-width:900px){.demo{grid-template-columns:minmax(0,1fr);padding:28px 18px;gap:36px}}

/* the phone */
.dphone{position:relative;width:min(270px,100%);margin:0 auto;aspect-ratio:9/18.6;padding:8px;border-radius:46px;
  background:linear-gradient(145deg,#3a4250 0%,#151a22 30%,#0c0f15 55%,#2c323d 100%);
  box-shadow:0 0 0 1px rgba(255,255,255,.10) inset,0 0 0 2px #05070b,0 40px 80px -30px rgba(0,0,0,.9),0 0 70px -20px rgba(61,123,255,.5)}
.dscreen{position:relative;height:100%;border-radius:39px;overflow:hidden;padding:0 12px;display:flex;flex-direction:column;
  background:radial-gradient(120% 60% at 50% 0%,#14213a,#070B14 60%)}
.dshot{position:relative;flex:none;aspect-ratio:16/11;border-radius:14px;overflow:hidden;margin:4px 0 10px;
  background:#0D2638 url('/app/assets/ai-vs-original.webp') 100% 20%/200% auto no-repeat}
.dshot::after{content:"";position:absolute;inset:0;border-radius:14px;box-shadow:inset 0 0 0 2px rgba(234,179,0,0);transition:box-shadow .4s}
.cyc.s1 .dshot::after{box-shadow:inset 0 0 0 2px rgba(234,179,0,.8)}
/* the scan line rides a full-height layer moved by transform, so the same
   rule fits any phone size: translateY(100%) is always the bottom of the photo */
.scanline{position:absolute;inset:0;opacity:0;pointer-events:none}
.scanline::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,transparent,var(--gold2),transparent);box-shadow:0 0 18px 4px rgba(234,179,0,.6)}
.cyc.s1 .scanline{opacity:1;animation:dscan 1.1s ease-in-out 2 alternate}
@keyframes dscan{from{transform:translateY(0)}to{transform:translateY(calc(100% - 3px))}}
.dflash{position:absolute;inset:0;background:#fff;opacity:0}
.cyc.s0 .dflash{animation:dflash .5s ease-out}
@keyframes dflash{0%{opacity:.85}100%{opacity:0}}

.dstate{display:grid;gap:2px}
.dl{display:flex;align-items:center;gap:10px;padding:7px 2px;border-top:1px solid var(--line);
  opacity:.18;transform:translateY(4px);transition:opacity .45s,transform .45s}
.dl.on{opacity:1;transform:none}
.dl b{display:block;font:600 9.5px/1 var(--mono);letter-spacing:.11em;color:var(--dim);margin-bottom:4px}
.dl span{font:500 12.5px/1.2 var(--mono);color:var(--text)}
.dic{width:30px;height:30px;flex:none;border-radius:9px;display:grid;place-items:center;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--muted)}
.dic svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.dl.cur .dic{border-color:rgba(234,179,0,.6);color:var(--gold2)}
.dcoin{width:30px;height:30px;flex:none}
.dl.ok .dic{background:rgba(31,203,155,.16);border-color:rgba(31,203,155,.45);color:var(--seal);font-weight:700}
.dl.ok span{color:var(--seal)}
.typed{display:inline-block;clip-path:inset(0 100% 0 0)}
.dl.d2.on .typed{animation:typed .9s steps(9) forwards}
@keyframes typed{to{clip-path:inset(0 0 0 0)}}

.dshare{margin:auto 0 24px;display:grid;place-items:center;height:40px;border-radius:12px;opacity:0;transform:translateY(8px);
  font:600 14px/1 var(--body);color:#141000;background:linear-gradient(180deg,var(--gold2),var(--gold));transition:opacity .45s,transform .45s}
.cyc.s3 .dshare{opacity:1;transform:none}

/* the four big steps */
.dsteps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;text-align:center}
@media (max-width:640px){.dsteps{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 14px}}
.dsteps li{position:relative;display:grid;justify-items:center;gap:8px;color:var(--muted);transition:color .4s}
.dsteps li:not(:last-child)::after{content:"→";position:absolute;right:-16px;top:34px;color:var(--dim);font-size:18px}
@media (max-width:640px){.dsteps li::after{display:none}}
.bigic{width:92px;height:92px;border-radius:50%;display:grid;place-items:center;
  border:2px solid rgba(156,195,255,.35);background:rgba(61,123,255,.08);color:var(--ice);
  transition:border-color .4s,box-shadow .4s,background .4s,transform .4s}
.bigic svg{width:42px;height:42px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.bigic.coinwrap img{width:62px;height:62px}
.dsteps b{font:700 17px/1.2 var(--display);letter-spacing:.04em;text-transform:uppercase;color:var(--text);margin-top:6px}
.dsteps p{font-size:14px;line-height:1.45;max-width:20ch}
.dsteps li.cur .bigic{border-color:var(--gold);background:rgba(234,179,0,.12);color:var(--gold2);transform:scale(1.06);
  box-shadow:0 0 0 6px rgba(234,179,0,.08),0 0 40px rgba(234,179,0,.45)}
.dsteps li.done .bigic{border-color:rgba(234,179,0,.45)}
.dsteps li.k4.cur .bigic{border-color:var(--seal);color:var(--seal);background:rgba(31,203,155,.12);
  box-shadow:0 0 0 6px rgba(31,203,155,.08),0 0 40px rgba(31,203,155,.45)}

/* never leaves you */
.never{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:22px;align-items:center;
  margin-top:40px;padding-top:30px;border-top:1px solid var(--line2)}
@media (max-width:760px){.never{grid-template-columns:auto minmax(0,1fr)}.never ul{grid-column:1/-1}}
.never .lock{width:72px;height:72px;border-radius:20px;display:grid;place-items:center;
  background:linear-gradient(180deg,rgba(61,123,255,.22),rgba(61,123,255,.06));border:1px solid rgba(156,195,255,.4);color:var(--ice)}
.never .lock svg{width:38px;height:38px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.never b{display:block;font:700 22px/1.25 var(--display);margin-bottom:6px}
.never p{font-size:15.5px}
.never ul{list-style:none;margin:0;padding:0 0 0 22px;border-left:1px solid var(--line2);display:grid;gap:8px;font-size:14px;color:var(--muted)}
@media (max-width:760px){.never ul{border-left:0;padding:0;display:flex;flex-wrap:wrap;gap:8px 18px}}
.never li{display:flex;align-items:center;gap:8px}
.never li::before{content:"✓";color:var(--seal);font-weight:700}
@media (prefers-reduced-motion:reduce){.cyc.s1 .scanline{animation:none}}

/* Why Bitcoin - its own block, sized to be read rather than skimmed */
.whybtc{margin:72px auto 0;max-width:1000px;text-align:center;padding:56px 40px;border-radius:26px;
  border:1px solid rgba(234,179,0,.28);
  background:radial-gradient(70% 90% at 50% 0%,rgba(234,179,0,.10),transparent 70%),linear-gradient(180deg,var(--surf2),var(--surf))}
.whybtc h3{font:700 clamp(30px,3.6vw,44px)/1.1 var(--display);letter-spacing:-.03em}
.whybtc .why{margin:18px auto 0;max-width:34ch;font-size:clamp(19px,2vw,24px);line-height:1.5;color:#B9C4D6}
.whybtc .dont{list-style:none;margin:40px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.whybtc .dont li{padding:24px 18px;border-radius:18px;border:1px solid var(--line2);background:rgba(7,11,20,.6);
  font-size:clamp(17px,1.6vw,20px);line-height:1.35;color:var(--muted)}
.whybtc .dont b{display:block;margin-top:6px;font:700 clamp(22px,2.3vw,28px)/1.15 var(--display);letter-spacing:-.02em;color:var(--text)}
.whybtc .preserve{margin-top:40px;font:700 clamp(28px,3.8vw,48px)/1.12 var(--display);letter-spacing:-.03em;text-wrap:balance}
@media (max-width:700px){.whybtc{padding:38px 18px}.whybtc .dont{grid-template-columns:minmax(0,1fr)}}