:root{--bg: #0b0b10;--bg-soft: #14141c;--text: #f5f7fb;--muted: #c7c9d1;--accent: #4f7bff;--accent-2: #6c95ff;--card: #1a1b24;--border: #2a2b37;--ok: #25d47b;--ng: #ff5c7a;--shadow: 0 10px 30px rgba(0,0,0,.25);--radius: 14px;--radius-sm: 10px;--maxw: 980px}@media(prefers-color-scheme:light){:root{--bg:#f7f8fb;--bg-soft:#ffffff;--text:#10121a;--muted:#4b4f62;--card:#ffffff;--border:#e8eaf1;--shadow:0 8px 24px rgba(16,18,26,.08)}}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:Noto Sans JP,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,Hiragino Kaku Gothic ProN,Yu Gothic,Meiryo,sans-serif;color:var(--text);background:radial-gradient(1200px 600px at 80% -10%,rgba(255,107,214,.25),transparent 60%),radial-gradient(1000px 500px at 0% -10%,rgba(139,92,246,.25),transparent 60%),var(--bg);line-height:1.75;letter-spacing:.02em}.skip-link{position:absolute;left:-999px;top:auto;width:1px;height:1px;overflow:hidden}.skip-link:focus{left:16px;top:16px;width:auto;height:auto;background:#fff;color:#000;padding:8px 12px;border-radius:8px}.lang-switch{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;font-size:.95rem;margin:0 0 12px}.lang-switch a{color:var(--text);text-decoration:none;padding:0;border:none;background:none;transition:color .2s ease}.lang-switch a:hover,.lang-switch a:focus{color:var(--accent);text-decoration:underline;outline:none}.lang-switch a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.lang-switch a[aria-current=page]{font-weight:600;color:var(--accent);pointer-events:none;cursor:default;text-decoration:underline}.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}header{padding:52px 0 24px}.hero{background:linear-gradient(135deg,#ff6bd62e,#8b5cf62e);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px 26px;display:flex;flex-direction:column;gap:12px}.hero h1{margin:0;font-size:clamp(26px,4vw,36px);line-height:1.2}.hero p{margin:0;color:var(--muted)}.cta-row{margin-top:12px;display:flex;gap:12px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:10px;padding:12px 16px;border-radius:12px;border:1px solid var(--border);background:linear-gradient(180deg,var(--bg-soft),var(--card));color:var(--text);text-decoration:none;font-weight:600;transition:transform .12s ease,border-color .12s ease,box-shadow .12s ease;box-shadow:var(--shadow)}.btn:hover{transform:translateY(-1px);border-color:transparent;box-shadow:0 12px 32px #0003}.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;border:none}.btn.ghost{background:none;border:1px dashed var(--border);box-shadow:none;color:var(--text);padding:10px 14px;font-size:.95rem}main{padding:16px 0 64px}section{margin:28px 0}.section-header{margin-bottom:16px}.section-header h2{margin:0 0 6px}.section-header p{margin:0;color:var(--muted)}.cards{display:grid;grid-template-columns:1fr;gap:20px}.download-group{margin-top:28px}.download-heading{margin:0 0 12px;font-size:20px;font-weight:600;letter-spacing:.01em}@media(min-width:760px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.cards.cards--single{grid-template-columns:1fr;max-width:420px}}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;display:flex;flex-direction:column;gap:16px}.card h3{margin:0;font-size:18px}.card-image{position:relative;width:100%;padding-top:calc(800 / 1260 * 100%);aspect-ratio:1260 / 800;border-radius:var(--radius-sm);overflow:hidden;background:var(--bg-soft);border:1px solid var(--border)}.card-image img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:var(--bg-soft);display:block}.card-title{margin:0;font-size:18px;font-weight:700}.card-desc{margin:0;color:var(--muted)}.file-meta{margin:0;color:var(--muted);font-family:Menlo,Consolas,monospace;font-size:.9rem}.dl{display:flex;gap:10px;flex-wrap:wrap}footer{border-top:1px solid var(--border);padding:24px 0 32px;text-align:center;color:var(--muted);margin-top:40px}