:root{
  --bg:#fafaf7;
  --bg-soft:#f3f2ec;
  --bg-dark:#0d0d0d;
  --bg-card:#ffffff;
  --ink:#0d0d0d;
  --ink-2:#2a2a28;
  --mute:#6b6b66;
  --faint:#a8a8a2;
  --line:#e6e4dc;
  --line-2:#d8d6cc;
  --accent:#ff5722;
  --accent-2:#ff8a3d;
  --green:#00875a;
  --serif:'Noto Serif JP',serif;
  --mono:'JetBrains Mono',monospace;
  --sans:'Manrope','Noto Serif JP',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--ink);
  line-height:1.7;
  font-feature-settings:"palt";
  overflow-x:hidden;
}
::selection{background:var(--ink);color:var(--bg)}
a{color:inherit;text-decoration:none}
svg{display:block;max-width:100%}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* === NAV === */
nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:18px 32px;
  background:rgba(255,255,255,.85);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;
}
.nav-logo{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:20px;font-weight:900;letter-spacing:-.01em}
.nav-logo svg{width:22px;height:26px;flex:none}
.nav-logo small{font-family:var(--mono);font-size:10px;font-weight:500;color:var(--mute);letter-spacing:.15em}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{font-family:var(--mono);font-size:11px;color:var(--ink-2);letter-spacing:.15em;text-transform:uppercase;transition:color .2s;position:relative}
.nav-links a::after{content:'';position:absolute;left:0;right:0;bottom:-4px;height:1px;background:var(--ink);transform:scaleX(0);transform-origin:right;transition:transform .3s}
.nav-links a:hover::after{transform:scaleX(1);transform-origin:left}
.nav-cta{font-family:var(--mono);font-size:11px;background:var(--ink);color:var(--bg);padding:10px 18px;letter-spacing:.15em;transition:background .25s;border-radius:999px}
.nav-cta:hover{background:var(--accent)}

/* === BUTTONS === */
.btn{
  font-family:var(--mono);font-size:12px;padding:18px 32px;letter-spacing:.18em;
  transition:all .3s cubic-bezier(.22,.61,.36,1);
  display:inline-flex;align-items:center;gap:12px;border-radius:999px;
  text-transform:uppercase;cursor:pointer;border:none;font-weight:700;
}
.btn-primary{background:var(--ink);color:var(--bg)}
.btn-primary:hover{background:var(--accent);transform:translateY(-2px);box-shadow:0 12px 32px rgba(255,87,34,.35)}
.btn-primary .arrow{width:24px;height:24px;background:var(--bg);color:var(--ink);border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:12px;transition:transform .3s}
.btn-primary:hover .arrow{transform:translateX(4px)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line-2)}
.btn-ghost:hover{border-color:var(--ink)}

/* === HERO === */
.hero{padding:150px 32px 90px;position:relative;overflow:hidden;background:#fff}
.hero::before{
  content:'';position:absolute;inset:0;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 70% 70% at 50% 40%,black 30%,transparent 80%);
  -webkit-mask-image:radial-gradient(ellipse 70% 70% at 50% 40%,black 30%,transparent 80%);
  opacity:.6;
}
.hero-inner{position:relative;z-index:2;max-width:1320px;margin:0 auto;width:100%;
  display:grid;grid-template-columns:1fr 1.02fr;gap:56px;align-items:center}
.hero-meta{display:flex;gap:26px;align-items:center;margin-bottom:36px;font-family:var(--mono);font-size:11px;color:var(--mute);letter-spacing:.18em;flex-wrap:wrap}
.hero-meta span{display:flex;align-items:center;gap:8px}
.hero-meta .dot{width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(0,135,90,.15);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(0,135,90,.15)}50%{box-shadow:0 0 0 8px rgba(0,135,90,0)}}
.hero-title{font-family:var(--serif);font-size:clamp(38px,4.1vw,66px);font-weight:900;line-height:1.04;letter-spacing:-.035em;margin-bottom:32px}
.hero-title .em{font-style:italic;font-weight:400;color:var(--accent)}
.hero-title .stroke{-webkit-text-stroke:1.5px var(--ink);color:transparent}
.hero-lead{font-size:17px;color:var(--ink-2);max-width:34em;line-height:1.85;margin-bottom:36px}
.hero-lead strong{font-weight:700;color:var(--ink)}
.hero-cta-group{display:flex;gap:16px;flex-wrap:wrap}
.hero-art img{display:block;width:100%;height:auto}

/* flag flutter — the single ambient motion */
.flag-wave{transform-origin:0 50%;animation:wave 4.8s ease-in-out infinite}
@keyframes wave{
  0%,100%{transform:skewY(0deg) translateY(0)}
  35%{transform:skewY(-2.4deg) translateY(-4px)}
  70%{transform:skewY(2deg) translateY(3px)}
}

/* === SECTION === */
section.s{padding:130px 32px;position:relative}
.s-inner{max-width:1320px;margin:0 auto}
.s-head{display:grid;grid-template-columns:auto 1fr auto;gap:48px;align-items:end;margin-bottom:68px;padding-bottom:32px;border-bottom:1px solid var(--line)}
.s-num{font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:.25em;font-weight:700}
.s-title{font-family:var(--serif);font-size:clamp(34px,4.4vw,60px);font-weight:900;line-height:1.12;letter-spacing:-.025em}
.s-title .em{font-style:italic;font-weight:400;color:var(--accent)}
.s-tag{font-family:var(--mono);font-size:10px;color:var(--mute);letter-spacing:.25em;text-align:right}

/* === ABOUT === */
#about{background:var(--bg)}
.about-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:72px}
.about-lead{font-family:var(--serif);font-size:clamp(22px,2vw,30px);font-weight:700;line-height:1.65;letter-spacing:.01em}
.about-lead .mark{background:linear-gradient(transparent 65%,rgba(255,87,34,.25) 65%);padding:0 4px}
.about-body p{color:var(--ink-2);margin-bottom:22px;font-size:15px;line-height:1.9}
.about-body strong{color:var(--ink);font-weight:700}
.about-stats{margin-top:40px;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.stat{background:var(--bg);padding:24px 20px}
.stat-num{font-family:var(--serif);font-size:34px;font-weight:900;line-height:1;margin-bottom:6px}
.stat-num .unit{font-size:13px;font-weight:400;color:var(--mute);margin-left:4px}
.stat-label{font-family:var(--mono);font-size:10px;color:var(--mute);letter-spacing:.15em}

/* === SERVICES === */
#services{background:var(--bg-soft)}
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.svc{background:var(--bg-card);padding:40px 34px 36px;transition:background .3s}
.svc:hover{background:#fffdfa}
.svc-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:26px}
.svc-num{font-family:var(--mono);font-size:10px;color:var(--faint);letter-spacing:.2em;padding-top:6px}
.svc-title{font-family:var(--serif);font-size:21px;font-weight:900;margin-bottom:4px;letter-spacing:-.01em}
.svc-en{font-family:var(--mono);font-size:10px;color:var(--accent);letter-spacing:.18em;margin-bottom:16px}
.svc-desc{font-size:14px;color:var(--ink-2);line-height:1.9}
.svc-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:22px}
.tag{font-family:var(--mono);font-size:10px;color:var(--mute);border:1px solid var(--line-2);padding:5px 10px;border-radius:999px;letter-spacing:.06em}

/* === WORKS === */
#works{background:var(--bg)}
.works-top{display:grid;grid-template-columns:1fr .85fr;gap:64px;align-items:center;margin-bottom:56px}
.works-note{font-size:15px;color:var(--ink-2);line-height:1.9;max-width:34em}
.works-list{border-top:1px solid var(--line)}
.work{display:grid;grid-template-columns:52px 130px 1fr 160px 24px;gap:24px;align-items:center;padding:28px 8px;border-bottom:1px solid var(--line);transition:background .25s,padding .25s}
.work:hover{background:var(--bg-soft);padding-left:16px}
.work-num{font-family:var(--mono);font-size:11px;color:var(--faint);letter-spacing:.1em}
.work-cat{font-family:var(--mono);font-size:10px;color:var(--accent);letter-spacing:.14em}
.work-title{font-family:var(--serif);font-size:17px;font-weight:700;margin-bottom:4px}
.work-desc{font-size:13px;color:var(--mute);line-height:1.8}
.work-tech{font-family:var(--mono);font-size:11px;color:var(--ink-2);text-align:right;letter-spacing:.06em}
.work-arrow{font-size:15px;color:var(--faint);text-align:right;transition:color .25s,transform .25s}
.work:hover .work-arrow{color:var(--accent);transform:translate(3px,-3px)}

/* === STACK === */
#stack{background:var(--bg-soft)}
.stack-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.stack-card{background:var(--bg-card);padding:32px 28px}
.stack-cat{font-family:var(--mono);font-size:10px;color:var(--accent);letter-spacing:.22em;margin-bottom:20px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.stack-list{list-style:none}
.stack-list li{font-size:14px;color:var(--ink-2);padding:6px 0 6px 16px;position:relative}
.stack-list li::before{content:'';position:absolute;left:0;top:15px;width:5px;height:5px;background:var(--line-2)}

/* === PROCESS === */
#process{background:var(--bg)}
.process-list{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.step{background:var(--bg);padding:36px 28px 40px}
.step-num{font-family:var(--mono);font-size:10px;color:var(--accent);letter-spacing:.22em;margin-bottom:22px}
.step-title{font-family:var(--serif);font-size:20px;font-weight:900;margin:0 0 12px}
.step-desc{font-size:14px;color:var(--ink-2);line-height:1.9}

/* === COMPANY === */
#company{background:var(--bg-soft)}
.co-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:start}
.co-table{width:100%;border-collapse:collapse;background:var(--bg-card);border:1px solid var(--line)}
.co-table th,.co-table td{text-align:left;padding:18px 24px;border-bottom:1px solid var(--line);font-size:14px;vertical-align:top}
.co-table tr:last-child th,.co-table tr:last-child td{border-bottom:0}
.co-table th{width:200px;font-family:var(--mono);font-size:11px;color:var(--mute);letter-spacing:.08em;font-weight:500}
.co-table td{color:var(--ink-2)}
.ceo-card{background:var(--bg-card);border:1px solid var(--line);padding:34px}
.ceo-label{font-family:var(--mono);font-size:10px;color:var(--accent);letter-spacing:.22em;margin-bottom:14px}
.ceo-name{font-family:var(--serif);font-size:26px;font-weight:900;letter-spacing:-.01em}
.ceo-name-en{font-family:var(--mono);font-size:10px;color:var(--mute);letter-spacing:.14em;margin:4px 0 20px}
.ceo-msg{font-size:14px;color:var(--ink-2);line-height:1.95}

/* === CTA === */
.cta{background:var(--bg-dark);color:var(--bg);padding:120px 32px;position:relative;overflow:hidden}
.cta-inner{max-width:1320px;margin:0 auto;display:grid;grid-template-columns:minmax(0,1fr);gap:56px}
.cta-label{font-family:var(--mono);font-size:11px;color:var(--accent-2);letter-spacing:.25em;margin-bottom:26px}
.cta-title{font-family:var(--serif);font-size:clamp(36px,4.6vw,66px);font-weight:900;line-height:1.14;letter-spacing:-.03em;margin-bottom:26px}
.cta-title .em{font-style:italic;font-weight:400;color:var(--accent)}
.cta-desc{font-size:15px;color:rgba(255,255,255,.68);line-height:1.9;margin-bottom:38px;max-width:34em}
.cta .btn-primary{background:var(--bg);color:var(--ink)}
.cta .btn-primary:hover{background:var(--accent);color:#fff}
.cta .btn-primary .arrow{background:var(--ink);color:var(--bg)}

/* === FOOTER === */
footer{background:var(--bg-dark);color:#fff;padding:0 32px 32px}
.foot-inner{max-width:1320px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:60px;padding-bottom:56px;border-bottom:1px solid rgba(255,255,255,.1)}
.foot-logo{font-family:var(--serif);font-size:34px;font-weight:900;margin-bottom:16px;letter-spacing:-.02em}
.foot-tag{font-family:var(--mono);font-size:11px;color:rgba(255,255,255,.5);letter-spacing:.15em;line-height:1.9}
.foot-col h4{font-family:var(--mono);font-size:11px;color:var(--accent-2);letter-spacing:.25em;margin-bottom:18px;font-weight:700}
.foot-col a,.foot-col p{display:block;color:rgba(255,255,255,.7);font-size:13px;padding:5px 0;transition:color .2s;line-height:1.7}
.foot-col a:hover{color:var(--accent-2)}
.foot-bottom{max-width:1320px;margin:0 auto;padding-top:30px;display:flex;justify-content:space-between;font-family:var(--mono);font-size:10px;color:rgba(255,255,255,.4);letter-spacing:.15em;gap:12px;flex-wrap:wrap}

/* === REVEAL === */
.reveal{opacity:0;transform:translateY(32px);transition:opacity .9s cubic-bezier(.22,.61,.36,1),transform .9s cubic-bezier(.22,.61,.36,1)}
.reveal.visible{opacity:1;transform:translateY(0)}

@media (max-width:1080px){
  .hero-inner,.works-top,.co-grid{grid-template-columns:1fr;gap:48px}
  .about-grid,.cta-inner{gap:48px}
  .hero-art{order:-1;max-width:560px}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:980px){
  nav{padding:14px 18px}
  .nav-links{display:none}
  .nav-logo{font-size:17px}
  .nav-logo small{display:none}
  .hero{padding:110px 20px 60px}
  section.s{padding:80px 20px}
  .s-head{grid-template-columns:1fr;gap:14px;margin-bottom:48px}
  .s-tag{text-align:left}
  .about-stats{grid-template-columns:1fr}
  .svc-grid{grid-template-columns:1fr}
  .work{grid-template-columns:1fr;gap:8px;padding:24px 0}
  .work:hover{padding-left:0}
  .work-tech,.work-arrow{text-align:left}
  .stack-grid,.process-list{grid-template-columns:1fr 1fr}
  .cta{padding:90px 20px}
  .foot-inner{grid-template-columns:1fr 1fr;gap:32px;padding-bottom:40px}
}
@media (max-width:540px){
  .stack-grid,.process-list,.foot-inner{grid-template-columns:1fr}
  .hero-cta-group{flex-direction:column}
  .btn{justify-content:center}
  .co-table th{width:120px;padding:14px}
  .co-table td{padding:14px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}