:root { --bg:#0b1020; --card:#0f172a; --muted:#94a3b8; --text:#e2e8f0; --link:#60a5fa; --accent:#f59e0b; }
*{box-sizing:border-box}
body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Noto Sans JP,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji",sans-serif;background:radial-gradient(1200px 800px at 10% -10%, #0b1020, #0b1020);color:var(--text)}
header{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid #ffffff14;background:linear-gradient(90deg,#0ea5e9 0%, #8b5cf6 50%, #f59e0b 100%);-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:800;letter-spacing:.4px;font-size:20px}
.container{max-width:1100px;margin:0 auto;padding:20px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.card{background:var(--card);border:1px solid #ffffff14;border-radius:14px;padding:16px;transition:transform .08s ease, box-shadow .2s ease}
.card:hover{transform:translateY(-2px);box-shadow:0 10px 24px -12px rgba(0,0,0,.6)}
h1{margin:10px 0 18px 0;font-size:22px}
.muted{color:var(--muted)}
a.card{display:block;color:inherit;text-decoration:none}
.tag{display:inline-block;font-size:12px;color:#0b1020;background:#f8fafc;border-radius:9999px;padding:2px 8px;margin-right:6px}
footer{margin:28px 0 18px;text-align:center;color:#64748b;font-size:12px}

/* Language switcher */
header .brand{font-weight:800;letter-spacing:.4px;font-size:20px;color:inherit;text-decoration:none}
header nav{margin-left:12px}
.lang-switch{display:inline-block;background:var(--accent);color:#0b1020!important;text-decoration:none;padding:8px 12px;border-radius:12px;font-weight:800;box-shadow:0 10px 24px -12px rgba(0,0,0,.6);transition:transform .03s ease, filter .15s ease}
.lang-switch:hover{filter:brightness(1.05)}
.lang-switch:active{transform:translateY(1px)}