:root{
  --bg:#0b0b0d;
  --bg-2:#141417;
  --surface:#17171b;
  --line:rgba(255,255,255,.10);
  --text:#f3f2ec;
  --muted:#8d8d86;
  --accent:#c8ff3c;       /* acid lime */
  --accent-2:#6b5cff;     /* violet */
  --display:"Space Grotesk","Noto Sans JP",sans-serif;
  --mono:"Space Mono",monospace;
  --jp:"Noto Sans JP",sans-serif;
  --pad-x:clamp(20px,5vw,90px);
  --pad-y:clamp(80px,11vw,180px);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--jp);line-height:1.8;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none;}
mark{background:transparent;color:var(--accent);}
::selection{background:var(--accent);color:#000;}

/* demo badge */
.demo-badge{
  position:fixed;top:0;left:0;z-index:200;
  background:var(--accent);color:#000;font-family:var(--mono);
  font-size:10px;letter-spacing:.12em;padding:5px 12px;
  border-bottom-right-radius:8px;font-weight:700;
}

/* scroll progress */
.scroll-progress{
  position:fixed;top:0;left:0;height:2px;width:0;z-index:150;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
}

/* ===== Header ===== */
.header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px var(--pad-x);
  transition:background .3s ease,border-color .3s ease,padding .3s ease;
  border-bottom:1px solid transparent;
}
.header.scrolled{
  background:rgba(11,11,13,.72);backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);border-bottom-color:var(--line);
  padding-top:13px;padding-bottom:13px;
}
.logo{font-family:var(--display);font-weight:700;font-size:20px;letter-spacing:.04em;}
.logo-dot{color:var(--accent);}
.nav{display:flex;align-items:center;gap:clamp(18px,2.4vw,34px);font-family:var(--mono);font-size:13px;letter-spacing:.04em;}
.nav a{color:var(--muted);transition:color .2s ease;}
.nav a:hover{color:var(--text);}
.nav .nav-cta{
  color:var(--accent);border:1px solid var(--accent);
  padding:8px 16px;border-radius:999px;transition:all .2s ease;
}
.nav .nav-cta:hover{background:var(--accent);color:#000;}
.burger{display:none;width:44px;height:44px;background:none;border:1px solid var(--line);border-radius:50%;cursor:pointer;place-items:center;}
.burger span,.burger span::before,.burger span::after{content:"";display:block;width:18px;height:2px;background:var(--text);transition:.25s;}
.burger span{position:relative;}
.burger span::before{position:absolute;top:-6px;}
.burger span::after{position:absolute;top:6px;}
.burger.open span{background:transparent;}
.burger.open span::before{top:0;transform:rotate(45deg);}
.burger.open span::after{top:0;transform:rotate(-45deg);}

.drawer{
  position:fixed;inset:0;z-index:90;background:var(--bg);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:28px;
  font-family:var(--display);font-size:30px;font-weight:600;
  transform:translateY(-100%);transition:transform .45s cubic-bezier(.4,0,.2,1);
}
.drawer.open{transform:translateY(0);}
.drawer a{opacity:.85;}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;gap:12px;
  font-family:var(--mono);font-size:14px;letter-spacing:.04em;
  padding:15px 28px;border-radius:999px;
  background:var(--accent);color:#000;font-weight:700;
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 30px -10px rgba(200,255,60,.5);}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--line);}
.btn.ghost:hover{border-color:var(--text);box-shadow:none;}
.btn.big{font-size:16px;padding:20px 40px;}
.btn.big span{color:rgba(0,0,0,.55);font-weight:400;}

/* ===== Section primitives ===== */
section{padding:var(--pad-y) var(--pad-x);position:relative;}
.sec-head{margin-bottom:clamp(40px,5vw,72px);}
.sec-no{font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:.2em;}
.sec-no.center{display:block;text-align:center;}
.sec-title{
  font-family:var(--display);font-weight:600;
  font-size:clamp(34px,6vw,72px);line-height:1.05;letter-spacing:-.01em;
  margin:10px 0 0;
}
.sec-lead{color:var(--muted);max-width:560px;margin:18px 0 0;font-size:15px;}

/* ===== Hero ===== */
.hero{
  min-height:100vh;display:flex;align-items:center;
  padding-top:120px;padding-bottom:80px;overflow:hidden;
}
.hero-glow{
  position:absolute;top:-20%;right:-10%;width:60vw;height:60vw;max-width:760px;max-height:760px;
  background:radial-gradient(circle,rgba(107,92,255,.30),transparent 62%);
  filter:blur(20px);pointer-events:none;
}
.hero-glow::after{
  content:"";position:absolute;left:-30%;bottom:-40%;width:70%;height:70%;
  background:radial-gradient(circle,rgba(200,255,60,.18),transparent 60%);
}
.hero-inner{position:relative;z-index:2;max-width:1000px;}
.eyebrow{display:inline-flex;align-items:center;gap:14px;font-family:var(--mono);font-size:13px;letter-spacing:.18em;color:var(--accent);text-transform:uppercase;}
.eyebrow-line{width:42px;height:1px;background:var(--accent);}
.hero-title{
  font-family:var(--display);font-weight:700;
  font-size:clamp(44px,9vw,116px);line-height:1.0;letter-spacing:-.02em;
  margin:24px 0 28px;
}
.hero-title .hl{color:var(--accent);position:relative;}
.hero-sub{font-size:clamp(15px,1.5vw,18px);color:#cfcfc8;max-width:620px;margin:0 0 36px;line-height:2;}
.hero-sub b{color:var(--text);font-weight:700;}

/* equalizer */
.eq{display:flex;align-items:flex-end;gap:5px;height:64px;margin:0 0 40px;cursor:pointer;width:max-content;}
.eq span{
  width:6px;height:14px;border-radius:3px;
  background:linear-gradient(180deg,var(--accent),var(--accent-2));
  transform-origin:bottom;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}

.scroll-cue{position:absolute;bottom:30px;left:var(--pad-x);display:flex;align-items:center;gap:12px;font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--muted);}
.scroll-cue i{width:1px;height:40px;background:linear-gradient(var(--accent),transparent);animation:cue 1.8s ease-in-out infinite;transform-origin:top;}
@keyframes cue{0%,100%{transform:scaleY(.3);opacity:.4;}50%{transform:scaleY(1);opacity:1;}}

/* ===== Marquee ===== */
.marquee{border-block:1px solid var(--line);padding:22px 0;overflow:hidden;background:var(--bg-2);}
.marquee-track{display:flex;align-items:center;gap:40px;width:max-content;animation:scroll-x 24s linear infinite;font-family:var(--display);font-weight:700;font-size:clamp(22px,3vw,40px);letter-spacing:-.01em;}
.marquee-track span{color:var(--text);}
.marquee-track b{color:var(--accent);font-size:.6em;}
@keyframes scroll-x{to{transform:translateX(-50%);}}

/* ===== About ===== */
.about-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(36px,5vw,72px);align-items:start;max-width:1200px;}
.portrait-ph{
  aspect-ratio:1/1;border-radius:14px;border:1px solid var(--line);
  background:linear-gradient(160deg,#1c1c22,#101015);
  overflow:hidden;position:relative;
}
.portrait-ph .avatar{width:100%;height:100%;object-fit:cover;display:block;}
.portrait-cap{font-family:var(--mono);font-size:11px;color:var(--muted);margin-top:12px;letter-spacing:.06em;}
.about-lead{font-family:var(--display);font-size:clamp(20px,2.4vw,28px);font-weight:600;margin:0 0 22px;line-height:1.5;}
.about-body p{color:#cfcfc8;margin:0 0 20px;font-size:15.5px;}
.about-body mark{font-weight:700;}

/* ===== Fields ===== */
.fields{background:var(--bg-2);}
.field-list{display:flex;flex-direction:column;max-width:1100px;margin:0 auto;}
.field{
  display:grid;grid-template-columns:auto 1fr;gap:clamp(24px,4vw,64px);
  padding:clamp(30px,4vw,52px) 0;border-top:1px solid var(--line);
  transition:padding-left .35s ease;
}
.field:last-child{border-bottom:1px solid var(--line);}
.field:hover{padding-left:14px;}
.field-idx{font-family:var(--mono);font-size:14px;color:var(--muted);padding-top:10px;}
.field-tag{font-family:var(--mono);font-size:12px;letter-spacing:.22em;color:var(--accent);margin:0 0 8px;}
.field-name{font-family:var(--display);font-weight:600;font-size:clamp(26px,4vw,46px);margin:0 0 16px;line-height:1.05;}
.field-text{color:#c4c4bd;margin:0 0 18px;max-width:620px;font-size:15px;}
.field-learn{font-size:14px;color:var(--muted);display:flex;gap:14px;align-items:baseline;border-left:2px solid var(--accent);padding-left:16px;}
.field-learn span{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--accent);white-space:nowrap;}

/* ===== Strength ===== */
.str-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(18px,2vw,26px);max-width:1200px;}
.str-card{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  padding:clamp(26px,3vw,40px);transition:transform .3s ease,border-color .3s ease;
}
.str-card:hover{transform:translateY(-6px);border-color:rgba(200,255,60,.4);}
.str-mark{font-family:var(--mono);font-size:13px;color:var(--accent);margin-bottom:20px;}
.str-card h3{font-family:var(--display);font-weight:600;font-size:22px;margin:0 0 12px;}
.str-card p{color:#b7b7b0;font-size:14px;margin:0;line-height:1.9;}

/* ===== Timeline ===== */
.timeline{list-style:none;margin:0;padding:0;max-width:760px;position:relative;}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:1px;background:var(--line);}
.tl-item{position:relative;padding:0 0 clamp(30px,4vw,46px) 42px;}
.tl-item::before{content:"";position:absolute;left:0;top:6px;width:16px;height:16px;border-radius:50%;border:2px solid var(--muted);background:var(--bg);}
.tl-item.is-now::before{border-color:var(--accent);background:var(--accent);box-shadow:0 0 0 5px rgba(200,255,60,.15);}
.tl-year{font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:.08em;}
.tl-body h3{font-family:var(--display);font-weight:600;font-size:20px;margin:6px 0 6px;}
.tl-body p{color:var(--muted);font-size:14px;margin:0;}

/* ===== Now & Next ===== */
.next{text-align:center;background:var(--bg-2);}
.next-kicker{font-family:var(--mono);font-size:13px;letter-spacing:.2em;color:var(--accent);margin:0 0 24px;}
.next-statement{font-family:var(--display);font-weight:600;font-size:clamp(26px,5vw,56px);line-height:1.3;margin:0;letter-spacing:-.01em;}
.next-statement .hl{color:var(--accent);}

/* ===== Contact ===== */
.contact{text-align:center;}
.contact-title{font-family:var(--display);font-weight:700;font-size:clamp(34px,6vw,68px);margin:14px 0 14px;}
.contact-lead{color:var(--muted);margin:0 0 40px;}
.contact-actions{display:flex;justify-content:center;}

/* ===== Footer ===== */
.footer{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:32px var(--pad-x);border-top:1px solid var(--line);font-family:var(--mono);font-size:12px;color:var(--muted);flex-wrap:wrap;}
.footer span:first-child{font-family:var(--display);font-weight:700;font-size:16px;color:var(--text);}

/* ===== Reveal ===== */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .9s cubic-bezier(.2,.7,.2,1),transform .9s cubic-bezier(.2,.7,.2,1);}
.reveal.in{opacity:1;transform:none;}
.reveal.delay-1{transition-delay:.12s;}
.reveal.delay-2{transition-delay:.24s;}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none;}.eq span,.scroll-cue i,.marquee-track{animation:none!important;}}

/* ===== Responsive ===== */
@media(max-width:860px){
  .nav{display:none;}
  .burger{display:grid;}
  .about-grid{grid-template-columns:1fr;max-width:520px;}
  .str-grid{grid-template-columns:1fr;max-width:460px;}
  .field{grid-template-columns:1fr;gap:10px;}
  .field-idx{padding-top:0;}
  .footer{flex-direction:column;text-align:center;}
}