/* ==========================================================================
   i2P HOUSE — SHARED BRAND SYSTEM V7 STYLESHEET
   GO OUT WEB–aligned. Canon palette. Noto Sans JP + IBM Plex Mono.
   Used identically across i2phouse.com, athleticcorridor.com,
   integrated-performance.institute
   ========================================================================== */

:root{
  --cloud:#F0EFEA; --blue:#0F4C81; --canopy:#2D3A2A;
  --kiln:#9E8C80; --dusk:#8A8290; --glacial:#B8C4CC;
  --persimmon:#D08050; --lavender:#B8B0C8; --ember:#D45D3A; --cypress:#353F2E;
  --gutter:24px; --margin:80px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0; background:var(--cloud); color:var(--canopy);
  font-family:'Noto Sans JP',sans-serif; font-weight:400; line-height:1.75;
  font-size:1.0625rem;
}
h1,h2,h3,h4{font-family:'Noto Sans JP',sans-serif;font-weight:900;text-transform:uppercase;margin:0;letter-spacing:.01em;}
p{margin:0 0 1em;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.jp{font-weight:300;letter-spacing:.02em;}
.mono{font-family:'IBM Plex Mono',monospace;}
.wrap{max-width:1180px;margin:0 auto;padding:0 var(--gutter);}
@media(min-width:900px){.wrap{padding:0 var(--margin);}}

/* ---------- Nav ---------- */
.site-nav{
  position:sticky;top:0;z-index:100;background:var(--cloud);
  border-bottom:1px solid rgba(45,58,42,.12);
}
.site-nav .inner{
  max-width:1180px;margin:0 auto;padding:18px var(--gutter);
  display:flex;align-items:center;justify-content:space-between;
}
.site-nav .brand{font-weight:900;font-size:.95rem;text-transform:uppercase;letter-spacing:.06em;}
.site-nav .brand small{display:block;font-family:'IBM Plex Mono',monospace;font-weight:400;font-size:.62rem;letter-spacing:.05em;color:var(--dusk);text-transform:none;margin-top:2px;}
.site-nav .links{display:flex;gap:28px;list-style:none;margin:0;padding:0;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;}
.site-nav .links a{border-bottom:2px solid transparent;padding-bottom:3px;}
.site-nav .links a:hover,.site-nav .links a.active{border-color:var(--blue);color:var(--blue);}
.site-nav.dark{background:var(--canopy);color:var(--cloud);border-color:rgba(240,239,234,.12);}
.site-nav.dark .brand small{color:var(--kiln);}
.nav-toggle{display:none;background:none;border:none;font-size:1.4rem;color:inherit;cursor:pointer;}
@media(max-width:760px){
  .site-nav .links{position:fixed;inset:0 0 0 auto;width:78%;max-width:320px;background:var(--canopy);color:var(--cloud);
    flex-direction:column;padding:90px 32px;gap:22px;transform:translateX(100%);transition:transform .3s ease;}
  .site-nav .links.open{transform:translateX(0);}
  .nav-toggle{display:block;}
}

/* ---------- Buttons ---------- */
.btn{display:inline-block;padding:13px 28px;border-radius:2px;font-family:'IBM Plex Mono',monospace;
  font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;font-weight:500;cursor:pointer;border:none;
  transition:transform .2s ease, box-shadow .2s ease;}
.btn:hover{transform:translateY(-1px);}
.btn.primary{background:var(--persimmon);color:#fff;}
.btn.secondary{border:1px solid currentColor;background:transparent;}
.btn.blue{background:var(--blue);color:#fff;}
.cta-row{display:flex;gap:16px;flex-wrap:wrap;}
.cta-row.center{justify-content:center;}

/* ---------- Hero ---------- */
.hero{padding:120px 0 90px;text-align:center;position:relative;overflow:hidden;}
.hero.dark{background:var(--canopy);color:var(--cloud);}
.hero.light{background:var(--cloud);color:var(--canopy);}
.hero .eyebrow{font-family:'IBM Plex Mono',monospace;font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--dusk);margin-bottom:18px;}
.hero h1{font-size:clamp(2.2rem,6vw,4.4rem);line-height:1.08;}
.hero .sub-jp{margin-top:12px;font-size:1.05rem;opacity:.85;}
.hero .desc{max-width:600px;margin:22px auto 0;font-size:1.02rem;opacity:.9;}
.hero .cta-row{margin-top:36px;}
.hero.image-bg{background-size:cover;background-position:center;}
.hero.image-bg::before{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(45,58,42,.55),var(--canopy) 92%);}
.hero.image-bg .inner{position:relative;z-index:2;}

/* ---------- Sections ---------- */
section{padding:88px 0;}
section.tight{padding:56px 0;}
.section-label{font-family:'IBM Plex Mono',monospace;font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--dusk);margin-bottom:12px;}
.section-head{font-size:clamp(1.6rem,3.2vw,2.4rem);margin-bottom:14px;}
.section-desc{max-width:640px;font-size:1rem;}
.on-dark{background:var(--canopy);color:var(--cloud);}
.on-cloud{background:var(--cloud);}
.on-glacial{background:var(--glacial);}
.on-cypress{background:var(--cypress);color:#fff;}

/* ---------- Card grids ---------- */
.grid{display:grid;gap:2px;background:rgba(45,58,42,.12);}
.grid.cols-2{grid-template-columns:1fr;}
.grid.cols-3{grid-template-columns:1fr;}
@media(min-width:760px){.grid.cols-2{grid-template-columns:1fr 1fr;}.grid.cols-3{grid-template-columns:repeat(3,1fr);}}
.card{background:var(--cloud);padding:36px 28px;transition:background .25s ease;}
.card:hover{background:#fff;}
.card .accent{width:36px;height:4px;margin-bottom:18px;}
.card h3{font-size:1.15rem;}
.card p{font-size:.92rem;color:var(--dusk);margin:12px 0 16px;}
.card .go{font-family:'IBM Plex Mono',monospace;font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:var(--blue);}
.card.dark{background:var(--canopy);color:var(--cloud);}
.card.dark .go{color:var(--glacial);}
.card.kiln{background:var(--kiln);color:var(--canopy);}

/* ---------- Metrics ---------- */
.metrics{display:grid;grid-template-columns:1fr;gap:1px;background:rgba(45,58,42,.12);}
@media(min-width:700px){.metrics{grid-template-columns:repeat(3,1fr);}}
.metric{background:#fff;padding:34px 22px;text-align:center;}
.metric .val{font-family:'IBM Plex Mono',monospace;font-size:2.6rem;color:var(--blue);font-weight:500;}
.metric .lab{font-size:.82rem;margin-top:8px;}

/* ---------- Tables / specs ---------- */
table.spec{width:100%;border-collapse:collapse;margin-top:20px;font-size:.9rem;}
table.spec th,table.spec td{text-align:left;padding:12px;border-bottom:1px solid rgba(45,58,42,.15);vertical-align:top;}
table.spec th{font-family:'IBM Plex Mono',monospace;font-size:.68rem;text-transform:uppercase;letter-spacing:.06em;color:var(--dusk);white-space:nowrap;}

/* ---------- Badges / tags ---------- */
.badge{display:inline-block;font-family:'IBM Plex Mono',monospace;font-size:.68rem;text-transform:uppercase;letter-spacing:.05em;
  padding:5px 12px;border-radius:999px;border:1px solid currentColor;}
.badge.status{color:var(--persimmon);border-color:var(--persimmon);}

/* ---------- Pulse animation (haptic motif) ---------- */
.pulse-dot{width:10px;height:10px;border-radius:50%;background:var(--persimmon);display:inline-block;
  animation:pulse 1.6s ease-in-out infinite;}
@keyframes pulse{0%,100%{transform:scale(1);opacity:1;}50%{transform:scale(1.6);opacity:.4;}}
.waveform{display:flex;align-items:center;gap:3px;height:34px;justify-content:center;}
.waveform span{width:3px;background:var(--blue);border-radius:2px;animation:wf 1.2s ease-in-out infinite;}
.waveform span:nth-child(2n){animation-delay:.15s;background:var(--persimmon);}
.waveform span:nth-child(3n){animation-delay:.3s;}
@keyframes wf{0%,100%{height:8px;}50%{height:30px;}}

/* ---------- Forms ---------- */
form.contact{max-width:520px;}
form.contact label{display:block;font-family:'IBM Plex Mono',monospace;font-size:.7rem;text-transform:uppercase;letter-spacing:.06em;color:var(--dusk);margin:16px 0 6px;}
form.contact input,form.contact textarea{width:100%;padding:12px 14px;border:1px solid rgba(45,58,42,.25);border-radius:2px;
  font-family:'Noto Sans JP',sans-serif;font-size:.95rem;background:#fff;color:var(--canopy);}
form.contact textarea{min-height:120px;resize:vertical;}
form.contact button{margin-top:22px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--canopy);color:var(--cloud);padding:70px 0 30px;}
.site-footer .jp{font-size:.95rem;opacity:.85;}
.site-footer h3{font-size:1.5rem;margin-top:8px;}
.site-footer .cols{display:grid;grid-template-columns:1fr;gap:32px;margin-top:44px;}
@media(min-width:700px){.site-footer .cols{grid-template-columns:repeat(4,1fr);}}
.site-footer .cols h4{font-family:'IBM Plex Mono',monospace;font-size:.68rem;text-transform:uppercase;letter-spacing:.08em;color:var(--kiln);margin-bottom:14px;}
.site-footer .cols ul{list-style:none;margin:0;padding:0;font-size:.86rem;}
.site-footer .cols li{margin-bottom:8px;}
.site-footer .bottom{margin-top:50px;padding-top:24px;border-top:1px solid rgba(240,239,234,.15);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-family:'IBM Plex Mono',monospace;font-size:.7rem;color:var(--kiln);}
.newsletter{margin-top:36px;display:flex;gap:10px;flex-wrap:wrap;max-width:440px;}
.newsletter input{flex:1;min-width:200px;padding:12px 14px;border:1px solid rgba(240,239,234,.3);background:transparent;color:var(--cloud);border-radius:2px;font-family:'Noto Sans JP',sans-serif;}
.newsletter input::placeholder{color:rgba(240,239,234,.55);}

/* ---------- Utility ---------- */
.center{text-align:center;}
.mt{margin-top:32px;}
.note{background:#fff;border-left:3px solid var(--persimmon);padding:16px 20px;font-size:.88rem;border-radius:0 4px 4px 0;}
.note.on-dark{background:#3a4a35;border-left-color:var(--persimmon);}
.divider{height:1px;background:rgba(45,58,42,.12);margin:0;}

/* ==========================================================================
   V7.1 VISUAL UPGRADE — sound-driven graphics layer
   ========================================================================== */

/* grain texture for wabi-sabi depth */
.grain::after{
  content:'';position:absolute;inset:0;pointer-events:none;opacity:.5;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.16'/%3E%3C/svg%3E");
}

/* full-bleed canvas behind hero content */
.hero-canvas{position:absolute;inset:0;width:100%;height:100%;display:block;}
.hero .inner{position:relative;z-index:3;}

/* giant JP watermark */
.jp-watermark{
  position:absolute;right:-1%;bottom:-4%;font-weight:900;font-size:clamp(6rem,18vw,15rem);
  line-height:1;opacity:.05;pointer-events:none;white-space:nowrap;z-index:1;
}

/* radial pulse rings (haptic motif) */
.pulse-rings{position:relative;width:220px;height:220px;margin:0 auto;}
.pulse-rings .core{position:absolute;left:50%;top:50%;width:26px;height:26px;border-radius:50%;
  background:var(--persimmon);transform:translate(-50%,-50%);box-shadow:0 0 24px rgba(208,128,80,.8);}
.pulse-rings .ring{position:absolute;left:50%;top:50%;border-radius:50%;border:2px solid var(--persimmon);
  transform:translate(-50%,-50%);opacity:0;animation:ringOut 3s ease-out infinite;}
.pulse-rings .ring:nth-child(2){width:70px;height:70px;animation-delay:0s;}
.pulse-rings .ring:nth-child(3){width:130px;height:130px;animation-delay:.5s;}
.pulse-rings .ring:nth-child(4){width:200px;height:200px;animation-delay:1s;}
@keyframes ringOut{0%{opacity:0;transform:translate(-50%,-50%) scale(.4);}30%{opacity:.9;}100%{opacity:0;transform:translate(-50%,-50%) scale(1.15);}}

/* tall equalizer bars */
.eq{display:flex;align-items:flex-end;gap:6px;height:120px;justify-content:center;}
.eq span{width:8px;border-radius:3px 3px 0 0;background:linear-gradient(180deg,var(--persimmon),var(--blue));
  animation:eqB 1.4s ease-in-out infinite;}
.eq span:nth-child(odd){animation-duration:1.1s;}
.eq span:nth-child(3n){animation-delay:.2s;background:linear-gradient(180deg,var(--glacial),var(--blue));}
.eq span:nth-child(4n){animation-delay:.35s;}
.eq span:nth-child(5n){animation-delay:.5s;background:linear-gradient(180deg,var(--ember),var(--persimmon));}
@keyframes eqB{0%,100%{height:14%;}50%{height:96%;}}

/* signal flow diagram (stadium → engine → wrist) */
.signal-flow{display:flex;align-items:center;justify-content:center;gap:0;flex-wrap:wrap;margin-top:40px;}
.signal-node{text-align:center;padding:0 26px;}
.signal-node .icon{width:88px;height:88px;margin:0 auto 14px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;border:2px solid rgba(240,239,234,.25);}
.signal-node .lab{font-family:'IBM Plex Mono',monospace;font-size:.68rem;text-transform:uppercase;letter-spacing:.08em;opacity:.8;}
.signal-link{flex:0 0 90px;height:2px;position:relative;overflow:visible;background:rgba(240,239,234,.18);}
.signal-link i{position:absolute;top:50%;left:0;width:10px;height:10px;border-radius:50%;
  background:var(--persimmon);transform:translateY(-50%);animation:travel 2.4s linear infinite;box-shadow:0 0 12px rgba(208,128,80,.9);}
@keyframes travel{0%{left:-4px;opacity:0;}12%{opacity:1;}88%{opacity:1;}100%{left:calc(100% - 6px);opacity:0;}}
@media(max-width:700px){.signal-link{flex-basis:40px;}}

/* metric ring dials */
.dials{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:700px){.dials{grid-template-columns:repeat(3,1fr);}}
.dial{text-align:center;}
.dial svg{width:170px;height:170px;}
.dial .num{font-family:'IBM Plex Mono',monospace;font-size:1.9rem;fill:var(--blue);font-weight:500;}
.dial .cap{font-size:.85rem;margin-top:10px;}
.dial circle.track{fill:none;stroke:rgba(45,58,42,.1);stroke-width:9;}
.dial circle.arc{fill:none;stroke:var(--blue);stroke-width:9;stroke-linecap:round;
  transform:rotate(-90deg);transform-origin:center;transition:stroke-dashoffset 1.4s ease;}
.dial.orange circle.arc{stroke:var(--persimmon);}

/* room cards — bigger, image-flavored */
.room-card{position:relative;overflow:hidden;min-height:340px;display:flex;flex-direction:column;justify-content:flex-end;
  padding:32px;text-decoration:none;transition:transform .3s ease;}
.room-card:hover{transform:scale(1.02);}
.room-card .bg{position:absolute;inset:0;z-index:0;transition:transform .6s ease;}
.room-card:hover .bg{transform:scale(1.06);}
.room-card .content{position:relative;z-index:2;}
.room-card h3{font-size:1.5rem;color:#fff;}
.room-card p{color:rgba(255,255,255,.85);font-size:.9rem;margin:10px 0 14px;}
.room-card .go{font-family:'IBM Plex Mono',monospace;font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:#fff;
  border-bottom:1px solid rgba(255,255,255,.5);padding-bottom:2px;display:inline-block;}
.room-card::after{content:'';position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,transparent 30%,rgba(20,26,18,.86));}

/* swell chart (institute) */
.swell-wrap{background:#fff;border:1px solid rgba(45,58,42,.12);border-radius:6px;padding:26px;margin-top:30px;}
.swell-wrap .legend{display:flex;gap:22px;flex-wrap:wrap;font-family:'IBM Plex Mono',monospace;font-size:.68rem;color:var(--dusk);margin-top:12px;}
.swell-wrap .legend i{display:inline-block;width:16px;height:3px;margin-right:6px;vertical-align:middle;}

/* product render frame */
.render-frame{position:relative;border-radius:8px;overflow:hidden;background:radial-gradient(circle at 35% 30%, #3a4a35, #171d14 75%);
  min-height:380px;display:flex;align-items:center;justify-content:center;}

/* floating chips */
.chip-float{position:absolute;background:rgba(240,239,234,.92);color:var(--canopy);border-radius:4px;
  font-family:'IBM Plex Mono',monospace;font-size:.62rem;padding:6px 10px;letter-spacing:.04em;box-shadow:0 6px 18px rgba(0,0,0,.35);}

/* section transitions — wave divider */
.wave-divider{display:block;width:100%;height:70px;}

/* stat ticker strip */
.ticker{background:var(--blue);color:#fff;overflow:hidden;padding:12px 0;white-space:nowrap;}
.ticker .track{display:inline-block;animation:tick 28s linear infinite;font-family:'IBM Plex Mono',monospace;font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;}
.ticker span{margin:0 34px;}
@keyframes tick{0%{transform:translateX(0);}100%{transform:translateX(-50%);}}