@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Noto+Sans+JP:wght@400;500;700;900&display=swap");:root{--background:#f8fafc;--foreground:#0f172a;--primary:#4f46e5;--primary-hover:#4338ca;--accent:#ec4899;--accent-hover:#db2777;--card-bg:rgba(255,255,255,0.7);--card-border:rgba(255,255,255,0.5);--border-radius:16px;--shadow:0 4px 30px rgba(0,0,0,0.1);--shadow-hover:0 10px 40px rgba(0,0,0,0.15);--transition:all 0.3s cubic-bezier(0.4,0,0.2,1);--gradient:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);--font-sans:"Inter","Noto Sans JP",sans-serif}@media (prefers-color-scheme:dark){:root{--background:#0f172a;--foreground:#f8fafc;--primary:#818cf8;--primary-hover:#6366f1;--accent:#f472b6;--accent-hover:#ec4899;--card-bg:rgba(30,41,59,0.7);--card-border:rgba(255,255,255,0.1);--shadow:0 4px 30px rgba(0,0,0,0.3);--shadow-hover:0 10px 40px rgba(0,0,0,0.5)}}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--background);color:var(--foreground);font-family:var(--font-sans);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-image:radial-gradient(at 0 0,rgba(79,70,229,.15) 0,transparent 50%),radial-gradient(at 100% 100%,rgba(236,72,153,.15) 0,transparent 50%);background-attachment:fixed;min-height:100vh}a{color:inherit;text-decoration:none;transition:var(--transition)}.container{max-width:1200px;margin:0 auto;padding:0 2rem}.glass-card{background:var(--card-bg);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid var(--card-border);border-radius:var(--border-radius);padding:2rem;box-shadow:var(--shadow);transition:var(--transition)}.glass-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:rgba(255,255,255,.3)}.text-gradient{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;font-weight:600;border-radius:9999px;background:var(--gradient);color:white;border:none;cursor:pointer;transition:var(--transition);box-shadow:0 4px 14px rgba(79,70,229,.4)}.btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(79,70,229,.6);opacity:.9}.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.1);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--card-border)}@media (prefers-color-scheme:dark){.header{background:rgba(15,23,42,.4)}}.header-inner{display:flex;justify-content:space-between;align-items:center;height:80px}.logo{font-size:1.5rem;font-weight:800;letter-spacing:-.05em}.footer{margin-top:5rem;padding:3rem 0;text-align:center;border-top:1px solid var(--card-border);color:#64748b}.article-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:2rem;margin-top:3rem}