/* ============ 137 OCEAN v2 — base ============ */
:root{
  --ink:#020609;
  --abyss:#01050a;
  --foam:#e8f4ff;
  --cyan:#7fd4ff;
  --bio:#55ffd4;
  --dim:#7b93a8;
  --line:rgba(127,212,255,.16);
  --font-en:"Space Grotesk",sans-serif;
  --font-ja:"Zen Kaku Gothic New",sans-serif;
  --font-serif:"Shippori Mincho",serif;
  --font-mono:"Space Mono",monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:auto}
html.lenis,html.lenis body{height:auto}
.lenis.lenis-smooth{scroll-behavior:auto!important}
body{
  background:var(--ink);
  color:var(--foam);
  font-family:var(--font-ja);
  font-size:16px;line-height:1.9;
  overflow-x:hidden;
  cursor:none;
}
@media (pointer:coarse){body{cursor:auto}}
a{color:inherit;text-decoration:none}
b{font-weight:700}
button{font:inherit;color:inherit;background:none;border:0;cursor:none}
::selection{background:var(--cyan);color:var(--ink)}

#gl{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
#grain{position:fixed;inset:-50%;width:200%;height:200%;z-index:3;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
  animation:grain 8s steps(10) infinite}
@keyframes grain{
  0%,100%{transform:translate(0,0)}10%{transform:translate(-5%,-8%)}30%{transform:translate(3%,-12%)}
  50%{transform:translate(-9%,4%)}70%{transform:translate(7%,8%)}90%{transform:translate(-4%,3%)}}
body.no-webgl #gl{display:none}
body.no-webgl{background:linear-gradient(180deg,#0a2d4d,#04121f 40%,#01050a)}

/* zone-crossing flash */
#flash{position:fixed;left:clamp(20px,7vw,110px);top:32vh;z-index:22;pointer-events:none;
  font-family:var(--font-mono);font-size:clamp(11px,1.2vw,14px);letter-spacing:.3em;color:var(--bio);
  opacity:0;transform:translateX(-8px)}
#flash.on{animation:flash .9s cubic-bezier(.22,1,.36,1) forwards}
@keyframes flash{0%{opacity:0;transform:translateX(-14px)}12%{opacity:1;transform:none}
  70%{opacity:1}100%{opacity:0;transform:translateX(6px)}}

/* ============ loader ============ */
#loader{position:fixed;inset:0;z-index:100;pointer-events:auto}
.ld-p{position:absolute;left:0;width:100%;height:50.2%;background:var(--abyss);
  transition:transform 1s cubic-bezier(.85,0,.15,1)}
.ld-p1{top:0}.ld-p2{bottom:0}
#loader.done .ld-p1{transform:translateY(-101%)}
#loader.done .ld-p2{transform:translateY(101%)}
#loader.done{pointer-events:none}
.ld-inner{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  transition:opacity .45s ease}
#loader.done .ld-inner{opacity:0}
.ld-rings{position:absolute;top:50%;left:50%;width:1px;height:1px}
.ld-rings i{position:absolute;top:50%;left:50%;width:26vmin;height:26vmin;transform:translate(-50%,-50%);
  border:1px solid rgba(127,212,255,.14);border-radius:50%;animation:ldring 3.2s ease-out infinite}
.ld-rings i:nth-child(2){animation-delay:1.05s}
.ld-rings i:nth-child(3){animation-delay:2.1s}
@keyframes ldring{from{transform:translate(-50%,-50%) scale(.2);opacity:.9}to{transform:translate(-50%,-50%) scale(3.4);opacity:0}}
.ld-num{font-family:var(--font-mono);font-size:clamp(64px,14vw,160px);line-height:1;color:var(--foam);
  font-variant-numeric:tabular-nums;position:relative;z-index:1}
.ld-dec{font-size:.22em;color:var(--cyan);letter-spacing:.05em}
.ld-cap{font-family:var(--font-mono);font-size:11px;letter-spacing:.35em;color:var(--dim);margin-top:18px;position:relative;z-index:1}
.ld-bar{width:min(260px,60vw);height:1px;background:rgba(127,212,255,.15);margin-top:24px;position:relative;z-index:1}
.ld-bar i{display:block;height:100%;width:0;background:var(--cyan)}

/* ============ cursor ============ */
#cursor,#ring{position:fixed;top:0;left:0;z-index:99;pointer-events:none;border-radius:50%;
  transform:translate(-50%,-50%)}
#cursor{width:6px;height:6px;background:var(--foam);mix-blend-mode:difference}
#ring{width:36px;height:36px;border:1px solid rgba(232,244,255,.5);
  display:flex;align-items:center;justify-content:center;
  transition:width .3s cubic-bezier(.22,1,.36,1),height .3s cubic-bezier(.22,1,.36,1),
    border-color .3s,background-color .3s}
#ringLabel{font-family:var(--font-mono);font-size:8px;letter-spacing:.22em;color:var(--ink);
  opacity:0;transform:scale(.6);transition:opacity .25s,transform .25s;text-indent:.22em}
body.is-hover #ring{width:58px;height:58px;border-color:rgba(232,244,255,.9)}
body.has-label #ring{width:72px;height:72px;background:var(--foam);border-color:var(--foam)}
body.has-label #ringLabel{opacity:1;transform:none}
@media (pointer:coarse){#cursor,#ring{display:none}}

/* ============ nav ============ */
.nav{position:fixed;top:0;left:0;right:0;z-index:20;
  display:flex;justify-content:space-between;align-items:center;
  padding:22px clamp(20px,4vw,48px);mix-blend-mode:difference}
.brand{font-family:var(--font-mono);font-size:15px;letter-spacing:.12em;display:inline-block}
.brand-sep{opacity:.4;margin:0 .5em}
.brand-name{font-size:11px;letter-spacing:.3em}
.nav-right{display:flex;align-items:center;gap:clamp(20px,3.5vw,48px)}
.nav-links{display:flex;gap:clamp(16px,3vw,40px)}
.nav-links a{font-family:var(--font-mono);font-size:11px;letter-spacing:.25em;position:relative;padding:4px 0;display:inline-block}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--foam);
  transform:scaleX(0);transform-origin:right;transition:transform .35s cubic-bezier(.76,0,.24,1)}
.nav-links a:hover::after{transform:scaleX(1);transform-origin:left}

/* sound toggle */
.snd{display:flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:10px;
  letter-spacing:.25em;color:var(--foam);opacity:.75;transition:opacity .3s;padding:4px 0}
.snd:hover{opacity:1}
.snd-bars{display:flex;align-items:flex-end;gap:2px;height:12px}
.snd-bars b{width:2px;height:4px;background:var(--foam);transition:height .3s}
body.snd-on .snd-bars b{animation:eq 1s ease-in-out infinite}
body.snd-on .snd-bars b:nth-child(1){animation-delay:0s}
body.snd-on .snd-bars b:nth-child(2){animation-delay:.25s}
body.snd-on .snd-bars b:nth-child(3){animation-delay:.5s}
body.snd-on .snd-bars b:nth-child(4){animation-delay:.12s}
@keyframes eq{0%,100%{height:4px}50%{height:12px}}

/* ============ HUD ============ */
.hud{position:fixed;right:clamp(14px,2.5vw,34px);top:50%;transform:translateY(-50%);z-index:20;
  text-align:right;font-family:var(--font-mono);pointer-events:none}
.hud-depth{font-size:clamp(14px,1.6vw,19px);color:var(--cyan);font-variant-numeric:tabular-nums;letter-spacing:.05em}
.hud-depth em{font-style:normal;font-size:11px;color:var(--dim);margin-left:4px}
.hud-zone{font-size:9px;letter-spacing:.3em;color:var(--dim);margin-top:6px;white-space:nowrap}
.hud-tape{position:relative;width:10px;height:150px;margin:14px 0 0 auto;overflow:hidden}
.tape{position:absolute;right:0;top:-150px;width:100%;height:450px;
  background:repeating-linear-gradient(180deg,rgba(127,212,255,.35) 0 1px,transparent 1px 15px);
  will-change:transform}
.hud-tape b{position:absolute;right:0;top:50%;width:10px;height:1px;background:var(--bio);box-shadow:0 0 6px var(--bio)}
@media(max-width:820px){.hud{display:none}}

/* ============ layout / chapters ============ */
main{position:relative;z-index:5}
.chapter{min-height:100vh;padding:18vh clamp(20px,7vw,110px) 12vh;position:relative;
  will-change:transform}
.ghost{position:absolute;z-index:-1;font-family:var(--font-en);font-weight:700;line-height:.8;
  color:transparent;-webkit-text-stroke:1px rgba(127,212,255,.09);user-select:none;pointer-events:none}
.ghost-hero{font-size:min(44vw,560px);right:-.03em;top:6vh}
.ghost-sec{font-size:min(26vw,340px);right:2vw;top:4vh;-webkit-text-stroke:1px rgba(127,212,255,.07)}
.sec-no{font-family:var(--font-mono);font-size:11px;letter-spacing:.35em;color:var(--cyan);margin-bottom:2.2em}
.sec-no .depth-mark{font-style:normal;color:var(--dim)}
.sec-title{font-family:var(--font-serif);font-weight:700;font-size:clamp(30px,5.2vw,64px);
  line-height:1.35;letter-spacing:.02em;margin-bottom:.9em}
.sec-lead{color:var(--dim);max-width:36em;margin-bottom:3.5em}

.reveal{opacity:0;transform:translateY(36px);
  transition:opacity .9s cubic-bezier(.22,1,.36,1),transform .9s cubic-bezier(.22,1,.36,1);
  transition-delay:calc(var(--i,0)*.12s)}
.in .reveal,.reveal.in{opacity:1;transform:none}

/* ============ hero ============ */
.hero{display:flex;flex-direction:column;justify-content:center;min-height:100svh;padding-top:0;padding-bottom:0;overflow:hidden}
.hero-eyebrow{font-family:var(--font-mono);font-size:11px;letter-spacing:.4em;color:var(--cyan);margin-bottom:2.4em}
.hero-title{display:flex;flex-direction:column}
.ht-line{overflow:hidden;display:block;padding-bottom:.06em;margin-bottom:-.06em}
.ht-txt{display:block;font-family:var(--font-en);font-weight:700;font-size:clamp(64px,15.5vw,220px);
  line-height:.92;letter-spacing:-.025em;color:var(--foam)}
.ht-txt .ch{display:inline-block;transform:translateY(120%) rotate(4deg);
  transition:transform 1s cubic-bezier(.22,1,.36,1) calc(var(--ci)*55ms)}
.hero.in .ht-txt .ch{transform:none}
.ht-txt .rp{display:inline-block;will-change:transform}
.ht-txt .bb{display:inline-block;font-style:normal;animation:bob 6s ease-in-out infinite;animation-delay:var(--bd)}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-.035em)}}
.hero-side{position:absolute;right:clamp(20px,6vw,90px);top:50%;transform:translateY(-58%);
  display:flex;gap:18px;align-items:flex-start}
.hero-side .ht-ja-v{writing-mode:vertical-rl;font-family:var(--font-serif);font-weight:500;
  font-size:clamp(20px,2.6vw,36px);letter-spacing:.42em;color:var(--cyan)}
.hero-side .ht-ja-cap{writing-mode:vertical-rl;font-family:var(--font-mono);font-size:9px;
  letter-spacing:.35em;color:var(--dim);padding-top:6px}
.hero-foot{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;margin-top:5.5vh}
.hero-lead{max-width:34em;color:var(--dim)}
.hero-lead b{color:var(--foam)}
.hero-cue{display:flex;align-items:center;gap:14px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.35em;color:var(--dim);white-space:nowrap}
.hero-cue i{width:1px;height:48px;background:linear-gradient(var(--cyan),transparent);display:block;
  animation:cue 1.8s ease-in-out infinite}
@keyframes cue{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}
  55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ============ marquee ============ */
.marquee{overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:14px 0;position:relative;z-index:5;background:rgba(2,6,9,.35);backdrop-filter:blur(2px)}
.mq-track{display:flex;white-space:nowrap;will-change:transform;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.3em;color:var(--dim)}

/* ============ about ============ */
.about-lines{display:grid;gap:1.6em;max-width:44em}
.about-lines p{color:#b8ccdc}
.stats{display:flex;flex-wrap:wrap;gap:clamp(24px,5vw,80px);margin-top:5em;list-style:none}
.stats b{display:block;font-family:var(--font-en);font-weight:700;font-size:clamp(40px,6vw,84px);
  line-height:1;color:var(--foam)}
.stats b::after{content:"+";color:var(--bio);font-size:.5em;vertical-align:.5em}
.stats li:last-child b::after{content:""}
.stats span{display:block;margin-top:.8em;font-size:12px;letter-spacing:.08em;color:var(--dim);line-height:1.7}

/* ============ depth gate (sticky scrub) ============ */
.gate{height:260vh;position:relative}
.gate-stage{position:sticky;top:0;height:100vh;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:22px;overflow:hidden}
.gate-cap{font-family:var(--font-mono);font-size:11px;letter-spacing:.4em;color:var(--dim)}
.gate-num{font-family:var(--font-mono);font-size:clamp(80px,17vw,240px);line-height:1;color:var(--foam);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.gate-line{display:block;width:min(560px,70vw);height:1px;background:var(--cyan);
  transform:scaleX(0);transform-origin:left;box-shadow:0 0 12px rgba(127,212,255,.5)}
.gate-sub{font-family:var(--font-mono);font-size:11px;letter-spacing:.3em;color:var(--cyan);opacity:0;
  transition:opacity .5s}

/* ============ playground / works ============ */
.works-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.work-card{position:relative;aspect-ratio:4/3;border:1px solid var(--line);overflow:hidden;
  background:rgba(4,18,31,.5);
  display:flex;flex-direction:column;justify-content:flex-end;padding:22px;
  transition:border-color .5s;transform-style:preserve-3d;will-change:transform}
@media(min-width:960px){.work-card.is-featured{grid-column:span 2;aspect-ratio:auto}}
.work-card::before{content:"";position:absolute;inset:0;z-index:0;
  background:linear-gradient(105deg,transparent 40%,rgba(127,212,255,.13) 50%,transparent 60%);
  transform:translateX(-120%);transition:transform .8s cubic-bezier(.22,1,.36,1)}
.work-card:hover::before{transform:translateX(120%)}
.work-card:hover{border-color:rgba(127,212,255,.55)}
.wc-sweep{position:absolute;inset:-40%;z-index:0;opacity:.5;
  background:conic-gradient(from 0deg,transparent 0 84%,rgba(127,212,255,.10) 92%,transparent 100%);
  animation:sweep 7s linear infinite}
@keyframes sweep{to{transform:rotate(360deg)}}
.wc-tag{position:absolute;top:16px;left:18px;z-index:1;font-family:var(--font-mono);font-size:9px;
  letter-spacing:.3em;color:var(--bio);border:1px solid rgba(85,255,212,.3);padding:4px 10px}
.wc-no{position:absolute;top:16px;right:18px;z-index:1;font-family:var(--font-mono);font-size:10px;color:var(--dim)}
.wc-title{position:relative;z-index:1;font-family:var(--font-en);font-weight:500;font-size:24px;
  letter-spacing:.02em;color:var(--foam)}
.wc-desc{position:relative;z-index:1;font-size:12px;color:var(--dim);margin-top:6px;line-height:1.7}
.wc-depth{position:relative;z-index:1;font-family:var(--font-mono);font-size:9px;letter-spacing:.25em;
  color:rgba(127,212,255,.5);margin-top:14px}
.work-card.is-soon{border-style:dashed;opacity:.62}
.work-card.is-soon .wc-title{color:var(--dim)}
.sonar{position:absolute;top:44%;left:50%;z-index:0;width:8px;height:8px;border-radius:50%;
  background:rgba(127,212,255,.5);transform:translate(-50%,-50%)}
.sonar::before,.sonar::after{content:"";position:absolute;inset:0;
  border-radius:50%;border:1px solid rgba(127,212,255,.4);animation:sonar 3s ease-out infinite}
.sonar::after{animation-delay:1.5s}
@keyframes sonar{from{transform:scale(1);opacity:.8}to{transform:scale(14);opacity:0}}

/* ============ channels ============ */
.ch-list{border-top:1px solid var(--line)}
.ch-row{display:grid;grid-template-columns:auto 1fr auto auto;align-items:center;gap:clamp(16px,3vw,40px);
  padding:30px 8px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.ch-row::before{content:"";position:absolute;inset:0;background:rgba(127,212,255,.06);
  transform:scaleY(0);transform-origin:bottom;transition:transform .45s cubic-bezier(.76,0,.24,1);z-index:-1}
.ch-row:hover::before{transform:scaleY(1)}
.ch-idx{font-family:var(--font-mono);font-size:10px;color:var(--dim);letter-spacing:.1em}
.ch-name{font-family:var(--font-en);font-weight:500;font-size:clamp(22px,3.4vw,40px);
  transition:transform .45s cubic-bezier(.22,1,.36,1),color .3s}
.ch-row:hover .ch-name{transform:translateX(14px);color:var(--cyan)}
.ch-role{font-size:12px;color:var(--dim);letter-spacing:.08em}
.ch-arrow{font-family:var(--font-en);font-size:24px;color:var(--cyan);opacity:0;transform:translateX(-10px);
  transition:opacity .35s,transform .35s}
.ch-row:hover .ch-arrow{opacity:1;transform:none}
@media(max-width:640px){.ch-role{display:none}}

/* ============ abyss ============ */
.abyss{display:flex;flex-direction:column;justify-content:center;min-height:110vh}
.abyss-title{font-family:var(--font-serif);font-weight:700;font-size:clamp(28px,4.6vw,58px);
  line-height:1.4;margin-bottom:.8em}
.abyss-lead{color:var(--dim);margin-bottom:3.5em}
.abyss-cta{display:inline-flex;align-items:center;justify-content:center;align-self:flex-start;
  font-family:var(--font-en);font-weight:500;font-size:clamp(18px,2.4vw,28px);letter-spacing:.12em;
  border:1px solid rgba(127,212,255,.4);border-radius:999px;padding:.9em 2.4em;position:relative;overflow:hidden;
  transition:color .4s,border-color .4s;will-change:transform}
.abyss-cta::before{content:"";position:absolute;inset:0;background:var(--cyan);border-radius:999px;
  transform:translateY(101%);transition:transform .45s cubic-bezier(.76,0,.24,1)}
.abyss-cta:hover{color:var(--ink);border-color:var(--cyan)}
.abyss-cta:hover::before{transform:none}
.abyss-cta span{position:relative;z-index:1}
.foot{margin-top:14vh;display:flex;flex-wrap:wrap;gap:12px 40px;justify-content:space-between;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.15em;color:var(--dim)}
.foot-alpha{color:var(--bio)}

/* depth markers along the page */
.dmark{position:absolute;left:clamp(8px,1.6vw,22px);z-index:4;font-family:var(--font-mono);
  font-size:9px;letter-spacing:.2em;color:rgba(127,212,255,.35);pointer-events:none;
  display:flex;align-items:center;gap:8px}
.dmark::before{content:"";width:14px;height:1px;background:rgba(127,212,255,.25)}
@media(max-width:820px){.dmark{display:none}}

/* ============ mobile ============ */
@media(max-width:820px){
  .brand-name{display:none}
  .nav{padding:16px 20px}
  .nav-right{gap:16px}
  .nav-links{gap:14px}
  .nav-links a{font-size:10px;letter-spacing:.14em}
  .snd-txt{display:none}
  #cursor,#ring{display:none}
  body{cursor:auto}
  button{cursor:pointer}
  .hero-side{position:static;transform:none;margin-top:26px;order:3}
  .hero-side .ht-ja-v,.hero-side .ht-ja-cap{writing-mode:horizontal-tb}
  .hero-foot{flex-direction:column;align-items:flex-start;margin-top:4vh}
  .ghost-hero{font-size:70vw;top:2vh}
  .gate{height:200vh}
}

/* ============ reduced motion ============ */
@media (prefers-reduced-motion:reduce){
  .reveal,.ht-txt .ch{opacity:1;transform:none;transition:none}
  .mq-track,#grain,.hero-cue i,.sonar::before,.sonar::after,.ld-rings i,.wc-sweep,.ht-txt .bb{animation:none!important}
  body{cursor:auto}
  #cursor,#ring{display:none}
}