:root{
  --bg:#000000;--bg-alt:#0a0a0a;--card:#111113;--text:#f5f5f7;--muted:#a1a1a6;
  --line:#1f1f22;--accent:#d9a35f;--accent-soft:rgba(217,163,95,.12);--btn:#f5f5f7;--btn-text:#000000;
  --radius:20px;--max:1080px;
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,"Helvetica Neue",Arial,"Hiragino Sans","Noto Sans JP",sans-serif;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:6px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:8px;background:var(--btn);color:var(--btn-text);padding:8px 14px;border-radius:8px;z-index:10}
.skip:focus{left:8px}
/* header */
.site-header{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:saturate(1.4) blur(12px);-webkit-backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:650;letter-spacing:-.01em;font-size:18px}
.brand img{width:28px;height:28px}
.nav{display:flex;gap:22px;font-size:15px}
.nav a{text-decoration:none;color:var(--muted)}
.nav a:hover{color:var(--text)}
@media (max-width:640px){.nav a:not(.nav-cta){display:none}}
.nav-cta{color:var(--text)!important;font-weight:600}
/* hero */
.hero{padding:96px 0 88px;text-align:center;background:radial-gradient(60% 50% at 50% 0%,rgba(217,163,95,.10),transparent 70%)}
.hero-mark{width:76px;height:76px;margin:0 auto 26px;display:block}
.wordmark{font-size:clamp(52px,9vw,92px);font-weight:700;letter-spacing:-.045em;line-height:1;margin:0}
.kana{display:block;margin-top:12px;font-size:15px;letter-spacing:.42em;color:var(--muted);font-weight:500;padding-left:.42em}
.tagline{font-size:clamp(26px,4vw,38px);font-weight:600;letter-spacing:-.02em;margin:34px 0 10px}
.tagline span{color:var(--accent)}
.subtag{font-size:clamp(16px,2vw,20px);font-weight:500;color:var(--muted,#a1a1aa);letter-spacing:.01em;margin:0 0 14px}
.pitch{max-width:600px;margin:0 auto;color:var(--muted);font-size:clamp(17px,2.2vw,20px)}
.cta-row{margin-top:36px;display:flex;flex-direction:column;align-items:center;gap:14px}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--btn);color:var(--btn-text);text-decoration:none;font-weight:600;padding:15px 28px;border-radius:999px;font-size:16px;transition:transform .15s ease,opacity .15s ease}
.btn:hover{opacity:.9;transform:translateY(-1px)}
.note{font-size:14px;color:var(--muted);display:inline-flex;align-items:center;gap:8px}
.note svg{width:15px;height:15px}
/* sections */
section{padding:88px 0}
.alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.eyebrow{font-size:13px;font-weight:650;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin:0 0 10px}
h2{font-size:clamp(30px,4.4vw,44px);letter-spacing:-.03em;line-height:1.1;margin:0 0 14px;font-weight:700}
.lead{color:var(--muted);max-width:620px;margin:0 0 44px;font-size:18px}
.grid{display:grid;gap:18px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
@media (max-width:900px){.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:1fr}}
@media (max-width:640px){.grid-4,.grid-2{grid-template-columns:1fr}section{padding:68px 0}.hero{padding:72px 0 64px}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.card h3{margin:14px 0 6px;font-size:19px;letter-spacing:-.01em}
.card p{margin:0;color:var(--muted);font-size:16px}
.icon{width:42px;height:42px;border-radius:12px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center}
.icon svg{width:22px;height:22px}
.fine{margin-top:22px;font-size:14px;color:var(--muted)}
/* app cards */
.app{padding:34px;display:flex;flex-direction:column;gap:6px;min-height:280px}
.app-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.app-icon{width:60px;height:60px;border-radius:15px;display:grid;place-items:center;color:#fff}
.app-icon svg{width:30px;height:30px}
.app-icon.photos{background:linear-gradient(135deg,#d98b3a,#b8572a)}
.app-icon.action{background:linear-gradient(135deg,#4a5568,#1a1d23);box-shadow:inset 0 0 0 1px rgba(255,255,255,.08)}
.badge{font-size:12.5px;font-weight:650;padding:6px 12px;border-radius:999px;background:var(--accent-soft);color:var(--accent);white-space:nowrap}
.app h3{font-size:24px;margin:18px 0 4px}
.app ul{margin:12px 0 0;padding-left:20px;color:var(--muted);font-size:16px}
.app li{margin:4px 0}
.by{font-size:14px;color:var(--muted)}
/* steps */
.steps{counter-reset:s;list-style:none;padding:0;margin:0}
.step{position:relative}
.step-num{font-size:14px;font-weight:700;width:34px;height:34px;border-radius:50%;border:1.5px solid var(--accent);color:var(--accent);display:grid;place-items:center}
/* faq */
.faq{max-width:760px}
details{border-bottom:1px solid var(--line);padding:6px 0}
details:first-of-type{border-top:1px solid var(--line)}
summary{cursor:pointer;list-style:none;padding:18px 36px 18px 0;font-weight:600;font-size:18px;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:4px;top:14px;font-size:26px;font-weight:300;color:var(--muted);transition:transform .2s}
details[open] summary::after{transform:rotate(45deg)}
details p{margin:0 0 20px;color:var(--muted)}
/* final cta */
.final{text-align:center}
.final .lead{margin:0 auto 30px}
/* footer */
footer{border-top:1px solid var(--line);padding:36px 0 44px;font-size:14px;color:var(--muted)}
footer .wrap{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center}
footer nav{display:flex;gap:20px}
footer a{text-decoration:none}
footer a:hover{color:var(--text);text-decoration:underline}
/* legal page */
.legal{padding:72px 0 96px}
.legal .wrap{max-width:760px}
.legal h1{font-size:clamp(34px,5vw,48px);letter-spacing:-.03em;margin:0 0 8px}
.legal h2{font-size:22px;letter-spacing:-.01em;margin:40px 0 8px}
.legal p,.legal li{color:var(--muted)}
.legal strong{color:var(--text)}
/* utility (replaces inline styles, CSP-safe) */
.notfound-title{font-size:56px}
.notfound-text{margin-top:20px}
.app-page-eyebrow{margin-top:22px}
.app .more{margin-top:auto;padding-top:16px;font-size:15px;font-weight:600;color:var(--accent);text-decoration:none}
.app .more:hover{text-decoration:underline}