/* Thinking Walks — landing page. Deliberately light (iOS system white) with one
   dark "night walk" section for the racebaan. Colour only appears as pulses. */
:root{
  --ink:#1d1d1f; --mute:#6e6e73; --mute2:#86868b; --bg:#fff; --bg2:#f5f5f7;
  --line:rgba(0,0,0,.08); --blue:#007AFF; --green:#18C46E;
  --pulse:linear-gradient(90deg,#007AFF 0%,#18C46E 100%);
  --gut:max(20px,calc((100vw - 1180px)/2));
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Helvetica Neue",Helvetica,Arial,sans-serif;
  color-scheme:light;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:auto}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;
  font-size:17px;line-height:1.47;letter-spacing:-.011em}
img{max-width:100%;display:block}
a{color:inherit}
.tab{font-variant-numeric:tabular-nums}

/* ---------- nav ---------- */
.nav{position:fixed;inset:0 0 auto 0;z-index:50;height:52px;display:flex;align-items:center;
  justify-content:space-between;padding:0 var(--gut);
  background:rgba(255,255,255,.72);-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);
  border-bottom:.5px solid var(--line);transition:background .4s,color .4s,border-color .4s}
.nav.dark{background:rgba(0,0,0,.6);color:#f5f5f7;border-color:rgba(255,255,255,.1)}
.nav .brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:17px;letter-spacing:-.02em;text-decoration:none}
.nav .brand img{width:26px;height:26px;border-radius:6.5px}
.nav .right{display:flex;align-items:center;gap:14px}
.lang{appearance:none;border:0;background:none;color:inherit;font:600 13px var(--font);opacity:.6;cursor:pointer;padding:6px 4px;letter-spacing:.02em}
.lang:hover{opacity:1}
.pill-btn{display:inline-flex;align-items:center;gap:6px;background:var(--blue);color:#fff;text-decoration:none;
  font:600 13px var(--font);padding:7px 14px;border-radius:980px;letter-spacing:-.005em;transition:transform .2s,background .2s}
.pill-btn:hover{background:#0068d9}
.pill-btn:active{transform:scale(.97)}

/* ---------- sticky stages ---------- */
.stage-sec{position:relative}
.sticky{position:sticky;top:0;height:100vh;height:100svh;overflow:hidden}
.sticky canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.fallback{display:none}
.nogl .fallback{display:flex;position:absolute;inset:auto 0 0 0;justify-content:center;gap:16px;padding-bottom:4vh}
.nogl .fallback .device{--w:min(240px,40vw)}
.copy{position:absolute;will-change:opacity,transform}
.kicker{font-size:clamp(17px,1.5vw,21px);font-weight:600;letter-spacing:-.01em;margin:0 0 10px;
  background:var(--pulse);-webkit-background-clip:text;background-clip:text;color:transparent;display:inline-block}
h1,h2{margin:0;font-weight:700;color:var(--ink)}
h1{font-size:clamp(50px,7.4vw,104px);line-height:.98;letter-spacing:-.05em}
h2{font-size:clamp(38px,5.4vw,76px);line-height:1.03;letter-spacing:-.042em}
.lead{font-size:clamp(19px,1.65vw,24px);line-height:1.36;font-weight:600;color:var(--mute2);letter-spacing:-.018em;margin:18px 0 0;max-width:30em}
.lead b{color:var(--ink);font-weight:600}
.dark .lead{color:#86868b}.dark .lead b{color:#f5f5f7}
.dark h1,.dark h2{color:#f5f5f7}

/* hero */
.hero{height:440vh}
.hero .c0{top:calc(52px + 6vh);left:0;right:0;text-align:center;padding:0 20px}
.hero .c0 .appicon{width:60px;height:60px;border-radius:13.5px;margin:0 auto 18px;box-shadow:0 10px 30px rgba(46,90,255,.25)}
.hero .c0 .lead{margin:20px auto 0;max-width:27em}
.hero .c0 .ctas{margin-top:26px;display:flex;gap:22px;justify-content:center;align-items:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--blue);color:#fff;text-decoration:none;
  font:600 17px var(--font);padding:12px 22px;border-radius:980px;transition:background .2s,transform .2s}
.btn:hover{background:#0068d9}.btn:active{transform:scale(.97)}
.link{color:var(--blue);text-decoration:none;font-size:17px;font-weight:500}
.link:hover{text-decoration:underline}
.link::after{content:" \203A"}
.side{left:var(--gut);top:50%;transform:translateY(-50%);width:min(40vw,520px)}
.scroll-hint{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);width:22px;height:34px;border:2px solid rgba(0,0,0,.18);border-radius:12px}
.scroll-hint::after{content:"";position:absolute;left:50%;top:6px;width:3px;height:7px;border-radius:2px;background:rgba(0,0,0,.35);transform:translateX(-50%);animation:hint 1.8s infinite}
@keyframes hint{0%{opacity:0;transform:translate(-50%,0)}30%{opacity:1}100%{opacity:0;transform:translate(-50%,9px)}}

/* statement */
.statement{padding:22vh var(--gut) 20vh;background:#fff}
.statement p{margin:0 auto;max-width:17em;font-size:clamp(34px,5.2vw,72px);line-height:1.08;letter-spacing:-.045em;font-weight:700;text-align:left}
.statement .w{color:#d2d2d7;transition:color .25s}
.statement .w.on{color:var(--ink)}

/* sync */
.sync{height:340vh;background:var(--bg2)}
.sync .sticky{background:var(--bg2)}
.sync .ctop{top:calc(52px + 7vh);left:0;right:0;text-align:center;padding:0 20px}
.sync .ctop .lead{margin-left:auto;margin-right:auto;max-width:26em}
.plabel{position:absolute;transform:translate(-50%,0);text-align:center;white-space:nowrap;pointer-events:none}
.plabel b{display:block;font-size:17px;font-weight:600;letter-spacing:-.02em}
.plabel span{font-size:14px;color:var(--mute)}
.clockchip{position:absolute;left:50%;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;gap:2px;
  pointer-events:none;text-align:center}
.clockchip .t{font-size:clamp(22px,2.2vw,30px);font-weight:600;letter-spacing:-.03em}
.clockchip .d{font-size:13px;color:var(--mute);display:flex;align-items:center;gap:6px}
.dot{width:8px;height:8px;border-radius:50%;background:#34C759;display:inline-block;box-shadow:0 0 0 0 rgba(52,199,89,.5);animation:ping 2s infinite}
@keyframes ping{0%{box-shadow:0 0 0 0 rgba(52,199,89,.45)}80%,100%{box-shadow:0 0 0 9px rgba(52,199,89,0)}}

/* racebaan */
.dark{background:#000;color:#f5f5f7}
.race{height:360vh}
.race .sticky{background:#fff}
.race .copy.rc{top:calc(52px + 7vh);left:0;right:0;text-align:center;padding:0 20px}
.race .copy.rc .lead{margin-left:auto;margin-right:auto;max-width:25em}
.hud{position:absolute;inset:auto var(--gut) 0 var(--gut);bottom:15vh;display:flex;justify-content:space-between;align-items:flex-end;pointer-events:none}
.hud .s{display:flex;flex-direction:column}
.hud .s.r{text-align:right;align-items:flex-end}
.hud small{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--mute);font-weight:600}
.hud .n{color:var(--ink);font-size:clamp(64px,9vw,128px);font-weight:700;letter-spacing:-.05em;line-height:.95}
.hud .s.r .n{color:#8e8e93}
.hud .m{font-size:15px;color:var(--mute);margin-top:6px}
.trackline{position:absolute;left:0;right:0;bottom:5vh;text-align:center;pointer-events:none}
.trackline b{display:block;font-size:19px;letter-spacing:-.01em;color:var(--ink)}
.trackline span{font-size:15px;color:var(--mute)}

.after{padding:12vh var(--gut) 16vh}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}
.trio{display:flex;justify-content:center;align-items:flex-start;gap:clamp(18px,3vw,48px);margin-top:9vh}
.trio figure{margin:0;display:flex;flex-direction:column;align-items:center}
.trio figure:nth-child(2){margin-top:-28px}
figcaption{margin-top:20px;font-size:15px;color:#86868b;font-weight:500;text-align:center;max-width:16em}
figcaption b{display:block;color:inherit;font-weight:600;font-size:17px;margin-bottom:2px}
.dark figcaption b{color:#f5f5f7}
.light figcaption b{color:var(--ink)}

/* css device (2D sections) */
.device{--w:300px;width:var(--w);position:relative;padding:calc(var(--w)*.032);border-radius:calc(var(--w)*.165);
  background:#0b0b0c;box-shadow:0 0 0 calc(var(--w)*.012) #3a3a3d,0 0 0 calc(var(--w)*.018) #1b1b1d,
  0 40px 80px -20px rgba(0,0,0,.35),0 18px 36px -18px rgba(0,0,0,.4)}
.dark .device{box-shadow:0 0 0 calc(var(--w)*.012) #4a4a4e,0 0 0 calc(var(--w)*.018) #161618,0 50px 120px -30px rgba(0,122,255,.25)}
.device img{width:100%;border-radius:calc(var(--w)*.135);aspect-ratio:1320/2868;object-fit:cover;object-position:top;background:#fff}
.device .island{position:absolute;top:calc(var(--w)*.058);left:50%;transform:translateX(-50%);width:28%;height:calc(var(--w)*.085);background:#000;border-radius:999px}
.device.noisland .island{display:none}

/* split features */
.split{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:6vw;padding:16vh var(--gut)}
.split.rev .txt{order:2}
.split .vis{display:flex;justify-content:center;gap:24px;align-items:flex-start}
.split .vis .device:nth-child(2){margin-top:60px}
.voice-wave{display:flex;align-items:center;gap:4px;height:44px;margin-top:30px}
.voice-wave i{display:block;width:4px;border-radius:2px;background:var(--blue);height:20%;transform-origin:center;animation:vw 1.1s ease-in-out infinite}
@keyframes vw{0%,100%{transform:scaleY(.5);background:#007AFF}50%{transform:scaleY(1.6);background:#18C46E}}
.bg2{background:var(--bg2)}
.facts{display:flex;gap:28px;margin-top:30px;flex-wrap:wrap}
.facts div{display:flex;flex-direction:column}
.facts b{font-size:28px;letter-spacing:-.03em;font-weight:700}
.facts span{font-size:14px;color:var(--mute)}

/* watch */
.watchwrap{display:flex;justify-content:center;perspective:1200px}
.watch{position:relative;width:min(300px,62vw);transform:rotateY(-14deg) rotateX(6deg);transform-style:preserve-3d}
.band{height:110px;margin:0 13%;background:linear-gradient(90deg,#2a2a2c,#3a3a3d 50%,#2a2a2c);}
.band.top{border-radius:30px 30px 0 0;-webkit-mask:linear-gradient(#0000,#000 60%);mask:linear-gradient(#0000,#000 60%)}
.band.bot{border-radius:0 0 30px 30px;-webkit-mask:linear-gradient(#000 40%,#0000);mask:linear-gradient(#000 40%,#0000)}
.case{position:relative;aspect-ratio:41/49;border-radius:27%/23%;background:linear-gradient(140deg,#5a5a5e,#1c1c1e 45%,#3a3a3d);padding:4.5%;
  box-shadow:0 50px 90px -30px rgba(0,0,0,.45),inset 0 0 0 1.5px rgba(255,255,255,.12)}
.crown{position:absolute;right:-5%;top:24%;width:6.5%;height:17%;border-radius:4px;background:linear-gradient(90deg,#2a2a2c,#77777b,#2a2a2c)}
.sidebtn{position:absolute;right:-2.5%;top:50%;width:3%;height:20%;border-radius:3px;background:#2c2c2e}
.face{height:100%;border-radius:23%/19%;background:#000;padding:13% 11%;display:flex;flex-direction:column;justify-content:center;color:#fff;font-variant-numeric:tabular-nums;overflow:hidden}
.face .app{font-size:clamp(12px,1.1vw,14px);font-weight:600;color:#18C46E;letter-spacing:-.01em}
.face .big{font-size:clamp(40px,4.6vw,58px);font-weight:600;letter-spacing:-.04em;line-height:1.05;margin:2px 0 6px}
.face .row{font-size:clamp(17px,1.8vw,23px);font-weight:600;letter-spacing:-.02em;display:flex;align-items:center;gap:8px;line-height:1.3}
.face .row em{font-style:normal;font-size:.62em;color:#8e8e93;font-weight:600;letter-spacing:.04em}
.heart{width:.75em;height:.75em;fill:#18C46E;animation:beat 0.95s infinite}
@keyframes beat{0%,100%{transform:scale(1);fill:#007AFF}15%{transform:scale(1.22);fill:#18C46E}30%{transform:scale(1)}}

/* privacy */
.privacy{padding:16vh var(--gut)}
.pgrid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:7vh}
.card{background:var(--bg2);border-radius:28px;padding:clamp(26px,3vw,44px)}
.card h3{margin:0 0 18px;font-size:clamp(22px,2vw,28px);letter-spacing:-.03em}
.card ul{list-style:none;margin:0;padding:0}
.card li{padding:14px 0;border-top:.5px solid rgba(0,0,0,.1);font-size:17px;line-height:1.4}
.card li:first-child{border-top:0}
.card li span{display:block;color:var(--mute);font-size:15px;margin-top:2px}
.card.keep{background:#1d1d1f;color:#f5f5f7}
.card.keep li{border-color:rgba(255,255,255,.12)}
.card.keep li span{color:#a1a1a6}
.pnote{margin-top:28px;color:var(--mute);font-size:15px}
.pnote a{color:var(--blue);text-decoration:none}

/* cta */
.cta{padding:18vh var(--gut) 18vh;text-align:center;background:linear-gradient(#fff,#f5f5f7)}
.cta .appicon{width:120px;height:120px;border-radius:27px;margin:0 auto 34px;box-shadow:0 24px 60px -12px rgba(46,90,255,.45)}
.cta .lead{margin:20px auto 34px}
.cta .btn{font-size:19px;padding:15px 28px}
.cta .fine{margin-top:18px;font-size:14px;color:var(--mute)}

footer{background:var(--bg2);border-top:.5px solid var(--line);padding:26px var(--gut) 40px;font-size:12px;color:var(--mute);display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:space-between}
footer a{color:var(--mute);text-decoration:none}
footer a:hover{text-decoration:underline}
footer nav{display:flex;gap:18px}

/* reveal */
.rv{opacity:0;transform:translateY(40px);transition:opacity 1s cubic-bezier(.2,.7,.2,1),transform 1s cubic-bezier(.2,.7,.2,1)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.12s}.rv.d2{transition-delay:.24s}

/* ---------- mobile ---------- */
@media (max-width:760px){
  .nav .brand span{font-size:16px}
  .hero .c0{top:calc(52px + 5vh)}
  .hero .c0 .appicon{width:56px;height:56px;border-radius:13px;margin-bottom:16px}
  .hero .c0 .lead{font-size:18px}
  .hero .c0 .ctas{margin-top:18px}
  .hero .c0 .btn{font-size:15px;padding:10px 18px}
  .side{left:20px;right:20px;width:auto;top:calc(52px + 5vh);transform:none}
  .side .lead{font-size:17px;margin-top:12px}
  .scroll-hint{display:none}
  .sync .ctop{top:calc(52px + 4vh)}
  .sync .ctop .lead{font-size:17px;margin-top:12px}
  .plabel b{font-size:14px}.plabel span{font-size:12px}
  .race .copy.rc{top:calc(52px + 4vh)}
  .race .copy.rc .lead{font-size:17px;margin-top:12px}
  .hud{bottom:17vh}
  .hud .m{font-size:12px;max-width:11em}
  .trackline b{font-size:16px}
  .trio{gap:10px;margin-top:6vh}
  .trio .device{--w:31vw !important}
  .trio figure:nth-child(2){margin-top:-14px}
  figcaption{font-size:12px}
  figcaption b{font-size:13px}
  .split{grid-template-columns:1fr;gap:8vh;padding:12vh 20px}
  .split.rev .txt{order:0}
  .split .vis .device{--w:44vw !important}
  .split .vis .device:nth-child(2){margin-top:40px}
  .split .vis.single .device{--w:62vw !important}
  .pgrid{grid-template-columns:1fr}
  .privacy{padding:12vh 20px}
  .statement{padding:16vh 20px}
  .cta .appicon{width:96px;height:96px;border-radius:22px}
}
@media (prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  .scroll-hint::after,.dot,.heart,.voice-wave i{animation:none}
}
.card li span:first-child{font-weight:600;letter-spacing:-.015em}

.device.cut{padding-bottom:0;border-bottom-left-radius:0;border-bottom-right-radius:0;-webkit-mask:linear-gradient(#000 78%,transparent);mask:linear-gradient(#000 78%,transparent)}
.device.cut img{aspect-ratio:1206/2290;border-bottom-left-radius:0;border-bottom-right-radius:0}
.trio figure:has(.cut) figcaption{margin-top:-6px}
.trackline{left:50%;right:auto;transform:translateX(-50%);padding:8px 18px;border-radius:16px;background:rgba(255,255,255,.82);-webkit-backdrop-filter:blur(14px) saturate(160%);backdrop-filter:blur(14px) saturate(160%);white-space:nowrap}