*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Hiragino Kaku Gothic ProN,Hiragino Sans,Meiryo,sans-serif;color:#1a1a1a;background:#f5f6f8}.appbar{background:#37474f;color:#fff;padding:14px 20px;display:flex;align-items:center;justify-content:space-between}.appbar h1{font-size:1.1rem;margin:0;font-weight:600}.appbar .user{font-size:.85rem;opacity:.95}.appbar .user a{color:#fff;margin-left:12px;text-decoration:underline}.container{max-width:960px;margin:32px auto;padding:0 16px}.lead{color:#555;font-size:.9rem;margin:0 0 20px}.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:18px}.tool-card{background:#fff;border-radius:10px;box-shadow:0 1px 3px rgba(0,0,0,.12);padding:22px;text-decoration:none;color:inherit;display:flex;flex-direction:column;gap:6px;transition:box-shadow .15s,transform .15s;border:1px solid transparent}.tool-card:hover{box-shadow:0 4px 14px rgba(0,0,0,.16);transform:translateY(-2px);border-color:#cfd8dc}.tool-card.disabled{opacity:.5;pointer-events:none}.tool-icon{font-size:2rem;line-height:1}.tool-name{font-size:1.05rem;font-weight:600}.tool-desc{font-size:.85rem;color:#666}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-card{background:#fff;border-radius:8px;box-shadow:0 1px 3px rgba(0,0,0,.12);padding:32px;text-align:center;max-width:380px;width:100%}.login-card h1{font-size:1.15rem;margin:0 0 20px}button.primary{background:#37474f;color:#fff;border:none;border-radius:5px;padding:11px 22px;font-size:1rem;cursor:pointer;width:100%;margin-top:10px}.dev-login{margin-top:20px;padding-top:16px;border-top:1px dashed #ddd}.dev-login input{width:100%;padding:8px;margin-bottom:8px;border:1px solid #ccc;border-radius:5px}