@font-face{font-family:"Inter";src:url(/fonts/inter-latin.woff2) format("woff2");font-weight:400 700;font-display:swap}

:root{
  --bg:#000;--fg:#fff;--mute:#a6a6a6;--dim:#6f6f6f;--line:rgba(255,255,255,.14);
  --font:"Inter","Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic","Noto Sans JP",system-ui,sans-serif;
  --wrap:1024px;--pad:clamp(20px,5vw,40px);
}
*{box-sizing:border-box}
html{color-scheme:dark;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:400 17px/1.75 var(--font);-webkit-font-smoothing:antialiased;overflow-x:hidden;word-break:auto-phrase}
h1,h2,h3{text-wrap:balance}
p{text-wrap:pretty}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
::selection{background:#fff;color:#000}

/* ---------- header: a floating capsule, centred ---------- */
.site-header{position:fixed;top:14px;left:0;right:0;z-index:30;display:flex;justify-content:center;padding:0 12px;pointer-events:none}
.site-header .in{pointer-events:auto;display:flex;align-items:center;gap:24px;max-width:100%;padding:6px 6px 6px 22px;border-radius:999px;background:rgba(20,20,20,.66);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(18px) saturate(1.4);-webkit-backdrop-filter:blur(18px) saturate(1.4);box-shadow:0 8px 32px rgba(0,0,0,.35)}
.brand img{height:26px;width:auto}
.nav{display:flex;gap:22px;font-size:14px;color:var(--mute)}
.nav a{transition:color .2s}
.nav a:hover{color:var(--fg)}
.header-cta{display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:999px;background:#fff;color:#000;font-size:14px;font-weight:600;transition:opacity .2s;white-space:nowrap}
.header-cta:hover{opacity:.86}
@media(max-width:720px){.nav{display:none}.site-header .in{gap:18px}}

/* ---------- hero: a wall of posts, always flowing ---------- */
.hero{position:relative;height:100svh;min-height:600px;padding-top:64px;overflow:hidden;display:grid;place-items:center;background:#000}
.wall{position:absolute;inset:0;display:flex;gap:14px;padding:0 14px}
.col{flex:1;min-width:0;overflow:hidden;position:relative}
.track{display:flex;flex-direction:column;gap:14px;animation:flow var(--dur,80s) linear infinite}
.col:nth-child(even) .track{animation-direction:reverse}
.track img{width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:14px;background:#161616;opacity:0;transition:opacity .8s}
.track img.ok{opacity:1}
@keyframes flow{to{transform:translateY(calc(-50% - 7px))}}
@media(max-width:1100px){.col:nth-child(n+5){display:none}}
@media(max-width:800px){.col:nth-child(n+4){display:none}}
@media(max-width:520px){.col:nth-child(n+3){display:none}}
.veil{position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 50% 50%,rgba(0,0,0,.72),rgba(0,0,0,.42) 65%,rgba(0,0,0,.3)),linear-gradient(180deg,rgba(0,0,0,.35),rgba(0,0,0,0) 30%,rgba(0,0,0,0) 70%,#000)}
.hero-text{position:relative;text-align:center;padding:0 var(--pad);animation:rise 1.2s .15s cubic-bezier(.2,.8,.2,1) both}
.hero-text img{width:min(170px,40vw);height:auto;margin:0 auto 26px}
.hero-text h1{margin:0;font-size:clamp(30px,5vw,52px);line-height:1.2;font-weight:700;letter-spacing:.005em;text-shadow:0 2px 30px rgba(0,0,0,.5)}
.hero-text p{margin:26px 0 0;font-size:15px;color:#d6d6d6;letter-spacing:.06em}
@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}

/* ---------- tagline band ---------- */
.band{overflow:hidden;border-bottom:1px solid var(--line);padding:clamp(20px,3.4vw,38px) 0;background:#000}
.band-track{display:flex;width:max-content;animation:band 46s linear infinite}
.band-track span{display:inline-flex;align-items:center;font-size:clamp(28px,5vw,58px);line-height:1;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.band-track span::after{content:"";width:.16em;height:.16em;margin:0 .7em;border-radius:50%;background:#5a5a5a}
@keyframes band{to{transform:translateX(-50%)}}

/* ---------- blocks (zig-zag) ---------- */
.block{max-width:var(--wrap);margin:0 auto;padding:clamp(70px,11vw,150px) var(--pad);display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,7vw,110px);align-items:center}
.block.flip .visual{order:2}
.visual{position:relative;width:100%;max-width:427px;aspect-ratio:427/520;border-radius:22px;overflow:hidden;background:#111;justify-self:center}
.visual img{width:100%;height:100%;object-fit:cover}
.text h2{margin:0;font-size:clamp(28px,3.6vw,48px);line-height:1.22;font-weight:700}
.text p{margin:22px 0 0;color:var(--mute);font-size:clamp(15px,1.3vw,18px);line-height:1.85}
.text p.ps{margin-top:14px;color:var(--dim)}
#globe{position:absolute;inset:0;width:100%;height:100%}
@media(max-width:800px){
  .block{grid-template-columns:1fr;text-align:center;gap:34px}
  .block.flip .visual{order:0}
  .visual{max-width:min(340px,80vw)}
}

/* ---------- footer ---------- */
.foot{max-width:var(--wrap);margin:0 auto;padding:clamp(56px,9vw,110px) var(--pad) 56px;display:flex;flex-direction:column;align-items:center;gap:30px;text-align:center;border-top:1px solid var(--line)}
.foot-logo img{height:44px;width:auto}
.foot-links{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 30px}
.foot-links a{color:var(--mute);font-size:15px;transition:color .2s}
.foot-links a:hover{color:#fff}
.foot-meta{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px 16px;color:var(--dim);font-size:13px}
.foot-meta .sep{width:3px;height:3px;border-radius:50%;background:#444}
.lang{display:inline-flex;gap:14px}
.lang a{color:var(--mute)}
.lang a:hover{color:#fff}
.lang span{color:#fff}

/* ---------- document pages ---------- */
.doc{word-break:normal;max-width:720px;margin:0 auto;padding:calc(64px + clamp(48px,9vw,110px)) var(--pad) clamp(60px,9vw,120px)}
.doc h1{margin:0;font-size:clamp(30px,4.6vw,48px);line-height:1.22;font-weight:700}
.doc .updated{margin:16px 0 clamp(36px,6vw,64px);color:var(--dim);font-size:14px}
.doc h2{margin:clamp(34px,5vw,54px) 0 4px;font-size:clamp(18px,2vw,21px);line-height:1.5;font-weight:600}
.doc p{text-wrap:wrap;margin:10px 0;color:#c4c4c4;font-size:16px;line-height:1.95}
.doc a{border-bottom:1px solid #555}
.doc a:hover{border-color:#fff}
.mail{display:inline-block;margin:6px 0 2px;font-size:clamp(22px,4vw,34px);font-weight:600;border-bottom:1px solid #666!important}
details{border-top:1px solid var(--line);padding:18px 0}
details:last-of-type{border-bottom:1px solid var(--line)}
summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:20px;font-weight:600;font-size:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--mute);font-weight:400;font-size:22px;line-height:1}
details[open] summary::after{content:"–"}

/* ---------- scroll reveal (JS only) ---------- */
.js [data-r]{opacity:0;transform:translateY(24px);transition:opacity .9s cubic-bezier(.2,.8,.2,1),transform .9s cubic-bezier(.2,.8,.2,1)}
.js [data-r].in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .track,.band-track{animation:none}
  .hero-text{animation:none}
  .js [data-r]{opacity:1;transform:none;transition:none}
}