/* STYZ LISTEN — site prototype design system */
:root{
  --bg:#FAFAF8; --bg2:#F3F1EC; --ink:#161514; --ink2:#5C5A55; --ink3:#9A968E; --line:#E7E4DD;
  --dark:#0E0D0C; --dark2:#1A1917; --onDark:#F4F1EB; --onDark2:#B7B2A8;
  --brand:#E8722E; --brand2:#F0986A; --brand-d:#A8481A; --brand-bg:#FCEFE6;
  --sans:"Noto Sans JP",-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN",sans-serif;
  --disp:"Space Grotesk","Noto Sans JP",sans-serif;
  --mono:"Space Mono",ui-monospace,Menlo,monospace;
  --r:10px; --maxw:1180px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.75;-webkit-font-smoothing:antialiased;}
::selection{background:var(--brand);color:#fff;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;}
h1,h2,h3{font-family:var(--disp);font-weight:700;letter-spacing:-.02em;margin:0;line-height:1.2;}
.eyebrow{font-family:var(--mono);font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--brand-d);display:inline-flex;align-items:center;gap:8px;}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--brand);display:inline-block;}
.eyebrow.on-dark{color:var(--brand2);}
.lead{font-size:clamp(14px,1.4vw,16px);color:var(--ink2);line-height:1.9;}

/* progress + header */
.progress{position:fixed;top:0;left:0;height:2px;width:0;background:var(--brand);z-index:120;transition:width .1s linear;}
.hdr{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .3s,box-shadow .3s,border-color .3s;border-bottom:1px solid transparent;}
.hdr .bar{display:flex;align-items:center;gap:18px;height:64px;}
.brandmark{font-family:var(--disp);font-weight:700;font-size:18px;letter-spacing:-.01em;color:var(--onDark);}
.brandmark b{color:var(--brand);}
.nav{display:flex;gap:22px;margin-left:14px;}
.nav a{font-size:13.5px;color:var(--onDark2);transition:color .2s;}
.nav a:hover{color:var(--onDark);}
.hdr .right{margin-left:auto;display:flex;align-items:center;gap:10px;}
.hdr.solid{background:rgba(250,250,248,.86);backdrop-filter:saturate(180%) blur(12px);border-color:var(--line);}
.hdr.solid .brandmark{color:var(--ink);}
.hdr.solid .nav a{color:var(--ink2);}
.hdr.solid .nav a:hover{color:var(--ink);}
.hdr.solid .burger{color:var(--ink);}
.burger{display:none;background:none;border:0;color:var(--onDark);font-size:24px;cursor:pointer;padding:4px;}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:7px;font-size:13.5px;font-weight:700;border-radius:999px;padding:11px 20px;border:1px solid transparent;cursor:pointer;transition:transform .15s,background .2s,color .2s,border-color .2s;font-family:var(--sans);white-space:nowrap;}
.btn:active{transform:scale(.97);}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:#d9651f;}
.btn-ghost{background:transparent;color:var(--onDark);border-color:rgba(255,255,255,.28);}
.btn-ghost:hover{border-color:var(--onDark);}
.hdr.solid .btn-ghost{color:var(--ink);border-color:var(--line);}
.btn-line{background:transparent;color:var(--brand-d);border-color:var(--brand);}
.btn-line:hover{background:var(--brand-bg);}
.btn-sm{padding:8px 15px;font-size:12.5px;}

/* hero */
.hero{position:relative;background:var(--dark);color:var(--onDark);overflow:hidden;padding:150px 0 110px;}
.hero .wrap{position:relative;z-index:2;}
.fibers{position:absolute;inset:0;z-index:1;pointer-events:none;}
.thread{position:absolute;left:-12%;right:-12%;height:1px;background:rgba(232,114,46,.10);}
.thread::after{content:"";position:absolute;top:0;left:0;height:100%;width:26%;background:linear-gradient(90deg,transparent,rgba(232,114,46,.9),transparent);animation:flow var(--d,9s) linear infinite;animation-delay:var(--dl,0s);will-change:transform;}
@keyframes flow{from{transform:translateX(-130%)}to{transform:translateX(520%)}}
.hero h1{font-size:clamp(34px,6vw,68px);letter-spacing:-.03em;}
.hero h1 .ac{color:var(--brand);}
.hero .sub{font-size:clamp(15px,1.6vw,18px);color:var(--onDark2);max-width:620px;margin:22px 0 0;line-height:1.85;}
.hero .cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.hero .scroll{margin-top:54px;font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--onDark2);text-transform:uppercase;display:flex;align-items:center;gap:8px;}
.hero .scroll i{font-size:15px;animation:bob 1.8s ease-in-out infinite;}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(4px)}}

/* sections */
.section{padding:clamp(64px,9vw,108px) 0;}
.section.dark{background:var(--dark);color:var(--onDark);}
.section.alt{background:var(--bg2);}
.sec-head{max-width:720px;}
.sec-head h2{font-size:clamp(26px,3.6vw,42px);margin:14px 0 0;}
.sec-head .lead{margin-top:14px;}
.dark .lead{color:var(--onDark2);}
.grid{display:grid;gap:18px;}
.g2{grid-template-columns:repeat(2,1fr);}
.g3{grid-template-columns:repeat(3,1fr);}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}

/* steps (聴く/見極める/生み出す) */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:40px;position:relative;}
.steps::before{content:"";position:absolute;top:34px;left:8%;right:8%;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand2));opacity:.5;}
.step{position:relative;padding:0 18px;text-align:center;}
.step .dot{width:14px;height:14px;border-radius:50%;background:var(--brand);margin:28px auto 18px;position:relative;z-index:1;box-shadow:0 0 0 6px var(--bg);}
.dark .step .dot{box-shadow:0 0 0 6px var(--dark);}
.step .no{font-family:var(--mono);font-size:12px;color:var(--brand-d);}
.dark .step .no{color:var(--brand2);}
.step h3{font-size:21px;margin:4px 0 8px;}
.step p{font-size:13.5px;color:var(--ink2);margin:0;}
.dark .step p{color:var(--onDark2);}

/* cards / use cases */
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:22px;transition:transform .25s,box-shadow .25s,border-color .25s;}
.card:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(20,18,16,.07);border-color:#dcd8cf;}
.uc{display:flex;flex-direction:column;gap:9px;}
.uc .ic{width:38px;height:38px;border-radius:9px;background:var(--brand-bg);color:var(--brand-d);display:flex;align-items:center;justify-content:center;font-size:20px;}
.uc h3{font-size:17px;}
.uc p{font-size:13px;color:var(--ink2);margin:0;}
.uc .more{font-family:var(--mono);font-size:11px;color:var(--brand-d);letter-spacing:.05em;margin-top:auto;}

/* stats */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:36px;}
.stat{padding:6px 0;}
.stat .v{font-family:var(--disp);font-size:clamp(30px,4vw,46px);font-weight:700;letter-spacing:-.02em;}
.dark .stat .v{color:#fff;}
.stat .v .u{font-size:.5em;color:var(--brand);}
.stat .k{font-size:12.5px;color:var(--ink2);margin-top:2px;}
.dark .stat .k{color:var(--onDark2);}

/* device mock */
.device{background:linear-gradient(180deg,#fff,#f7f5f0);border:1px solid var(--line);border-radius:14px;padding:14px;box-shadow:0 24px 60px rgba(20,18,16,.10);}
.device .topbar{display:flex;gap:6px;margin-bottom:12px;}
.device .topbar i{width:9px;height:9px;border-radius:50%;background:#d9d4cb;}
.device .ln{height:10px;border-radius:4px;background:#ece8e0;margin:8px 0;}
.device .wave{display:flex;align-items:flex-end;gap:4px;height:60px;margin:14px 0;}
.device .wave i{flex:1;background:var(--brand);border-radius:2px;opacity:.85;}
.device .pill{display:inline-block;font-size:11px;background:var(--brand-bg);color:var(--brand-d);border-radius:999px;padding:3px 10px;}

/* CTA band */
.ctaband{background:var(--brand);color:#fff;border-radius:18px;padding:clamp(34px,5vw,56px);text-align:center;}
.ctaband h2{font-size:clamp(24px,3.4vw,38px);}
.ctaband p{color:#ffe9dc;margin:12px auto 24px;max-width:520px;}
.ctaband .btn-primary{background:#fff;color:var(--brand-d);}
.ctaband .btn-primary:hover{background:#f3ede7;}
.ctaband .btn-ghost{color:#fff;border-color:rgba(255,255,255,.5);}

/* forms */
.formcard{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:clamp(22px,3vw,32px);}
.field{margin-bottom:16px;}
.field label{display:block;font-size:12.5px;font-weight:700;color:var(--ink2);margin-bottom:6px;}
.field label .req{color:var(--brand);}
.field input,.field textarea,.field select{width:100%;font-family:inherit;font-size:14px;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:9px;padding:11px 13px;outline:none;transition:border-color .2s,box-shadow .2s;}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-bg);}
.field textarea{min-height:110px;resize:vertical;}
.note{font-size:12px;color:var(--ink3);}

/* footer */
.ftr{background:var(--dark);color:var(--onDark2);padding:64px 0 30px;}
.ftr .top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px;}
.ftr .brandmark{color:#fff;}
.ftr .tag{font-size:13px;color:var(--onDark2);margin-top:12px;max-width:260px;line-height:1.8;}
.ftr h4{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--onDark2);margin:0 0 14px;font-weight:400;}
.ftr ul{list-style:none;margin:0;padding:0;}
.ftr ul li{margin:9px 0;}
.ftr ul a{font-size:13.5px;color:var(--onDark);opacity:.82;transition:opacity .2s;}
.ftr ul a:hover{opacity:1;color:var(--brand2);}
.ftr .btm{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-top:46px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);font-size:12px;color:var(--onDark2);}

/* reveal */
[data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1);}
[data-reveal].in{opacity:1;transform:none;}
[data-reveal][data-delay="1"]{transition-delay:.08s;}
[data-reveal][data-delay="2"]{transition-delay:.16s;}
[data-reveal][data-delay="3"]{transition-delay:.24s;}

/* page hero (lower pages) */
.phero{background:var(--dark);color:var(--onDark);padding:128px 0 64px;position:relative;overflow:hidden;}
.phero h1{font-size:clamp(28px,4.4vw,48px);margin:12px 0 0;}
.phero .lead{color:var(--onDark2);margin-top:14px;max-width:640px;}
.crumb{font-family:var(--mono);font-size:11px;color:var(--onDark2);letter-spacing:.1em;}

/* mobile nav panel */
.mpanel{display:none;position:fixed;inset:64px 0 auto 0;z-index:99;background:rgba(14,13,12,.97);backdrop-filter:blur(8px);padding:10px 28px 26px;border-bottom:1px solid rgba(255,255,255,.1);}
.mpanel.open{display:block;}
.mpanel a{display:block;padding:12px 0;font-size:16px;color:var(--onDark);border-bottom:1px solid rgba(255,255,255,.07);}
.mpanel .btn{margin-top:16px;width:100%;justify-content:center;}

@media(max-width:860px){
  .nav{display:none;} .burger{display:block;}
  .split{grid-template-columns:1fr;gap:28px;}
  .g3,.g2,.stats,.ftr .top{grid-template-columns:1fr 1fr;}
  .steps{grid-template-columns:1fr;gap:8px;} .steps::before{display:none;}
  .step{text-align:left;display:flex;gap:14px;align-items:flex-start;padding:10px 0;}
  .step .dot{margin:6px 0 0;}
}
@media(max-width:560px){
  .wrap{padding:0 18px;}
  .g3,.g2,.stats,.ftr .top{grid-template-columns:1fr;}
  .hero{padding:128px 0 84px;}
}