:root{--accent: #2563eb;--accent-soft: #eff6ff;--text: #1e293b;--text-muted: #64748b;--bg: #ffffff;--border: #e2e8f0;--shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 4px 16px rgba(15, 23, 42, .06);--radius: 14px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}img{max-width:100%;height:auto}h1,h2,h3,p{overflow-wrap:break-word}.app{min-height:100vh;display:flex;flex-direction:column}.container{width:100%;max-width:960px;margin:0 auto;padding:0 24px}.header{position:sticky;top:0;z-index:10;background:#ffffffe6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:64px;gap:16px;flex-wrap:wrap}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);order:1}.brand-logo{height:32px;width:auto}.brand-name{font-weight:700;letter-spacing:.02em}.nav{display:flex;gap:4px;flex-wrap:wrap;order:2}.header-actions{display:flex;align-items:center;gap:8px;order:3}.lang-toggle{background:none;border:1px solid var(--border);border-radius:999px;padding:6px 14px;font-size:.85rem;font-weight:600;color:var(--text-muted);cursor:pointer;transition:color .15s,border-color .15s,background .15s}.lang-toggle:hover{color:var(--accent);border-color:var(--accent);background:var(--accent-soft)}.nav a{text-decoration:none;color:var(--text-muted);padding:8px 14px;border-radius:999px;font-size:.95rem;font-weight:500;transition:background .15s,color .15s}.nav a:hover{color:var(--accent);background:var(--accent-soft)}.nav a.active{color:var(--accent);background:var(--accent-soft);font-weight:600}.menu-toggle{display:none;background:none;border:none;font-size:1.5rem;color:var(--text);cursor:pointer}.main{flex:1;padding:48px 24px 64px}.hero{text-align:center;padding:40px 0 56px}.hero-logo{height:80px;width:auto;margin-bottom:20px}.hero h1{font-size:clamp(2rem,5vw,3rem);font-weight:800;letter-spacing:-.02em}.hero-tagline{margin-top:12px;font-size:1.15rem;color:var(--text-muted)}.section-title{font-size:1.4rem;margin-bottom:20px}.card-grid{display:grid;gap:20px;grid-template-columns:repeat(auto-fill,minmax(min(260px,100%),1fr))}.card{display:block;text-decoration:none;color:var(--text);border:1px solid var(--border);border-radius:var(--radius);padding:24px;background:var(--bg);box-shadow:var(--shadow);transition:transform .15s,box-shadow .15s}.card:hover{transform:translateY(-3px);box-shadow:0 8px 24px #0f172a1f}.card h3{margin:8px 0 6px;font-size:1.2rem}.card p{color:var(--text-muted);font-size:.95rem}.card-category{display:inline-block;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--accent);background:var(--accent-soft);padding:3px 10px;border-radius:999px}.card-more{display:inline-block;margin-top:14px;color:var(--accent);font-weight:600;font-size:.9rem}.project h1{margin:10px 0 4px;font-size:clamp(1.6rem,5vw,2.2rem);letter-spacing:-.02em;overflow-wrap:break-word}.project-tagline{color:var(--text-muted);font-size:1.1rem;margin-bottom:24px}.project p{margin-bottom:16px;max-width:70ch}.project h2{margin:28px 0 12px;font-size:1.3rem}.project-image{max-width:100%;border-radius:var(--radius);border:1px solid var(--border);margin-bottom:24px}.features{list-style:none}.features li{padding:8px 0 8px 28px;position:relative}.features li:before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:700}.badges{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:8px}.badge-appstore{height:54px;width:auto}.badge-play{height:81px;width:auto;margin:-13px}.badge-play-ja{height:62px;margin:-4px}.badges a{display:inline-block;transition:opacity .15s}.badges a:hover{opacity:.8}.badge-legal{margin-top:12px;font-size:.75rem;color:var(--text-muted)}.about-table{width:100%;border-collapse:collapse;margin-top:24px;max-width:640px}.about-table th,.about-table td{text-align:left;padding:14px 16px 14px 0;border-bottom:1px solid var(--border);vertical-align:top}.about-table th{width:35%;color:var(--text-muted);font-weight:600}.footer{border-top:1px solid var(--border);padding:24px 0;color:var(--text-muted);font-size:.9rem}.footer-inner{display:flex;align-items:center;justify-content:center;gap:10px}.footer-logo{height:22px;width:auto}@media (max-width: 640px){.menu-toggle{display:block;padding:8px 12px}.nav{display:none;width:100%;flex-direction:column;gap:2px;padding-bottom:12px;order:4}.nav.open{display:flex}.nav a{padding:12px 14px;border-radius:10px}.container{padding:0 16px}.main{padding:28px 16px 48px}.hero{padding:20px 0 36px}.hero-tagline{font-size:1.05rem}.about-table,.about-table tbody,.about-table tr,.about-table th,.about-table td{display:block;width:100%}.about-table th{border-bottom:none;padding:14px 0 2px}.about-table td{padding:0 0 14px}.badges{gap:8px}.badge-appstore{height:48px}.badge-play{height:70px;margin:-11px}.badge-play-ja{height:55px;margin:-4px}}@media (max-width: 360px){.brand-name{font-size:.9rem}.hero h1{font-size:1.7rem}}