/* ───── Datapot — Pages shared styles (下層ページ共通) ─────
   Inherits the same tokens & look as Pattern 3 Light. */

:root{
  --bg:#FAFAF5; --panel:#F4F2EB; --fg:#15140F; --dim:#7a7368;
  --line:#D8D4C8; --line-s:#E8E5DB;
  --accent:#15140F;
  --ok:#4a7a4e; --hl:#8a7a45;
  --f-mono:"JetBrains Mono",ui-monospace,monospace;
  --f-m:"Shippori Mincho B1","Noto Serif JP",serif;
  --f-s:"Noto Serif JP",serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--bg);color:var(--fg);font-family:var(--f-mono);font-size:14px;line-height:1.75;-webkit-font-smoothing:antialiased;font-feature-settings:"palt"}
a{color:inherit;text-decoration:none}
.wrap{max-width:1280px;margin:0 auto;padding:0 32px;position:relative}
.mute{color:var(--dim)}
.hair{border-top:1px solid var(--line)}
.hair-s{border-top:1px solid var(--line-s)}

/* faint graph paper */
body::before{content:"";position:fixed;inset:0;background-image:linear-gradient(to right,rgba(21,20,15,.035) 1px,transparent 1px),linear-gradient(to bottom,rgba(21,20,15,.035) 1px,transparent 1px);background-size:48px 48px;pointer-events:none;z-index:0}

/* ───── Topbar ───── */
.topbar{position:sticky;top:0;z-index:30;background:rgba(250,250,245,.88);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.tin{display:flex;align-items:center;height:64px;max-width:1280px;margin:0 auto;padding:0 32px;gap:16px}
.path{font-family:var(--f-mono);font-size:13px;color:var(--fg);letter-spacing:.08em;line-height:1;display:inline-flex;align-items:center;gap:8px;padding-bottom:3px;position:relative}
.path::before{content:"";width:16px;height:1px;background:var(--fg);display:block;opacity:.55}
.path::after{content:"";position:absolute;left:24px;right:0;bottom:-1px;height:1px;background:linear-gradient(90deg,var(--fg) 0%,var(--fg) 40%,transparent 100%);opacity:.25}
.path b{color:var(--fg);font-weight:500;font-variant-numeric:tabular-nums}
.path .dot{width:4px;height:4px;border-radius:50%;background:var(--ok);display:inline-block;margin-left:4px;animation:pulse 2.2s ease-out infinite;position:relative;cursor:help}
.path .dot[data-state="closed"]{background:#b5ad9e;animation:none}
.path .dot[data-state="closed"]::after{content:"";position:absolute;inset:-3px;border:1px dashed #b5ad9e;border-radius:50%;opacity:.6}
.path .hrs{font-family:var(--f-mono);font-size:10px;color:var(--dim);letter-spacing:.1em;margin-left:8px;text-transform:uppercase;padding-left:8px;border-left:1px solid var(--line-s);line-height:1}
.path .hrs b{font-weight:500;font-variant-numeric:tabular-nums;color:var(--fg)}
.path .hrs[data-state="closed"] b{color:var(--dim)}
@media(max-width:640px){.path .hrs{display:none}}
.tspace{flex:1}
.tnav{display:flex;gap:20px;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--dim)}
.tnav a:hover,.tnav a.cur{color:var(--fg)}
.tnav a::before{content:"[";opacity:.4;margin-right:4px}
.tnav a::after{content:"]";opacity:.4;margin-left:4px}
.tnav a.cur::before,.tnav a.cur::after{opacity:.9}
.tcta{font-size:11px;color:var(--bg);background:var(--accent);padding:6px 12px;letter-spacing:.08em;text-transform:uppercase;font-weight:500}
.tcta:hover{background:var(--fg)}

/* Logo */
.logo{display:inline-flex;align-items:center;gap:12px}
.logo .mk{width:40px;height:40px;display:block;flex-shrink:0;transform-origin:60% 60%;animation:lg-hover 5.5s ease-in-out infinite}
.logo .wm{display:flex;flex-direction:column;line-height:1}
.logo .wm b{font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;font-weight:700;font-size:18px;letter-spacing:.2em;color:var(--fg)}
.logo .wm-jp{font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;font-size:10px;color:var(--dim);letter-spacing:.16em;margin-top:5px;font-weight:500}
.logo-footer{display:inline-block;line-height:0}
.logo-footer img{display:block;width:220px;max-width:100%;height:auto}
@keyframes lg-hover{
  0%,100%{transform:translateY(0) rotate(0deg)}
  25%{transform:translateY(-1.5px) rotate(-2deg)}
  50%{transform:translateY(1px) rotate(0deg)}
  75%{transform:translateY(-1px) rotate(1.5deg)}
}

/* Reveal */
.reveal{opacity:0;transform:translateY(22px) scale(.985);filter:blur(6px);transition:opacity .55s cubic-bezier(.2,.9,.2,1),transform .55s cubic-bezier(.2,.9,.2,1),filter .55s cubic-bezier(.2,.9,.2,1)}
.reveal.in{opacity:1;transform:none;filter:blur(0)}
.reveal.d1{transition-delay:.05s}
.reveal.d2{transition-delay:.10s}
.reveal.d3{transition-delay:.15s}
.reveal.d4{transition-delay:.20s}
.reveal.d5{transition-delay:.25s}
.reveal.d6{transition-delay:.30s}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;filter:none;transition:none}
  .logo .mk{animation:none}
}

/* Topbar in */
.topbar{animation:barIn .5s cubic-bezier(.2,.9,.2,1) both}
@keyframes barIn{from{opacity:0;transform:translateY(-10px);filter:blur(4px)}to{opacity:1;transform:none;filter:none}}

/* Pulse (used in status dot) */
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(74,122,78,.5)}
  70%{box-shadow:0 0 0 10px rgba(74,122,78,0)}
  100%{box-shadow:0 0 0 0 rgba(74,122,78,0)}
}

/* ───── Page Header (下層ページ共通のヒーロー) ───── */
.pg-hero{padding:72px 0 64px;border-bottom:1px solid var(--line);position:relative;z-index:2;overflow:hidden}
.pg-hero .crumb{font-family:var(--f-mono);font-size:11px;color:var(--dim);letter-spacing:.08em;margin-bottom:28px;display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.pg-hero .crumb a:hover{color:var(--fg)}
.pg-hero .crumb .sep{opacity:.5}
.pg-hero .crumb .cur{color:var(--fg)}
.pg-hero .ph-head{display:grid;grid-template-columns:1fr auto;gap:32px;align-items:end;padding-bottom:20px;border-bottom:1px dashed var(--line-s)}
.pg-hero .idx{font-family:var(--f-mono);font-size:11px;color:var(--dim);letter-spacing:.12em;text-transform:uppercase;margin-bottom:12px}
.pg-hero h1{font-family:var(--f-m);font-weight:500;font-size:clamp(40px,5vw,64px);line-height:1.2;letter-spacing:.05em;color:var(--fg)}
.pg-hero h1 .en{display:block;font-family:var(--f-mono);font-size:13px;font-weight:400;color:var(--dim);letter-spacing:.12em;margin-top:10px;text-transform:uppercase}
.pg-hero .lede{font-family:var(--f-m);font-size:15px;line-height:2;margin-top:28px;color:#3a362c;letter-spacing:.04em;max-width:640px}
.pg-hero .ph-stamp{font-family:var(--f-mono);font-size:10px;color:var(--dim);border:1px solid var(--line);padding:5px 11px;letter-spacing:.12em;text-transform:uppercase;align-self:end;justify-self:end}
/* subtle scanline flash on load */
.pg-hero::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,transparent 0%,rgba(21,20,15,.05) 50%,transparent 100%);transform:translateX(-100%);animation:scan 1.1s cubic-bezier(.2,.9,.2,1) .1s 1}
@keyframes scan{to{transform:translateX(100%)}}

/* ───── Footer ───── */
footer{padding:80px 0 40px;border-top:1px solid var(--line);position:relative;z-index:2}
.fg{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:48px;padding-bottom:40px;border-bottom:1px solid var(--line)}
.fg .addr{margin-top:20px;font-size:11px;line-height:2;color:var(--dim);letter-spacing:.05em}
.fg h5{font-size:10px;letter-spacing:.15em;text-transform:uppercase;color:var(--dim);margin-bottom:16px}
.fg ul{list-style:none}
.fg li{font-family:var(--f-m);font-size:14px;line-height:2.3;letter-spacing:.04em}
.fb{margin-top:24px;display:flex;justify-content:space-between;font-size:10px;color:var(--dim);letter-spacing:.1em}

/* Back to top */
.to-top{position:fixed;right:24px;bottom:24px;z-index:40;width:52px;height:52px;display:flex;align-items:center;justify-content:center;background:var(--fg);color:var(--bg);border:1px solid var(--fg);cursor:pointer;font-size:0;opacity:0;pointer-events:none;transform:translateY(10px);transition:opacity .3s,transform .3s,background .2s,color .2s}
.to-top.on{opacity:1;pointer-events:auto;transform:none}
.to-top:hover{background:var(--bg);color:var(--fg)}
.to-top svg{width:14px;height:14px;display:block}
.to-top::before{content:"";position:absolute;inset:-1px;border:1px solid var(--fg);transform:translate(5px,5px);pointer-events:none;transition:transform .2s}
.to-top:hover::before{transform:translate(3px,3px)}
.to-top .lb{position:absolute;right:58px;top:50%;transform:translateY(-50%);font-family:var(--f-mono);font-size:10px;letter-spacing:.15em;text-transform:uppercase;color:var(--fg);white-space:nowrap;background:var(--bg);padding:4px 10px;border:1px solid var(--line);opacity:0;transition:opacity .2s}
.to-top:hover .lb{opacity:1}

/* Generic section */
section.sec{padding:96px 0;border-bottom:1px solid var(--line);position:relative;z-index:2}

@media(max-width:900px){
  .tnav{display:none}
  .pg-hero .ph-head{grid-template-columns:1fr;gap:16px}
  .pg-hero .ph-stamp{justify-self:start}
  .fg{grid-template-columns:1fr}
}