:root{--bg:#f6f7f9;--card:#fff;--text:#1f2937;--muted:#6b7280;--border:#e5e7eb;--primary:#3b82f6;--primary-dark:#2563eb;--danger:#ef4444}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);-webkit-text-size-adjust:100%;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Segoe UI,sans-serif;font-size:16px;line-height:1.6}.app{max-width:720px;min-height:100vh;padding-bottom:calc(24px + env(safe-area-inset-bottom));margin:0 auto}.app-loading{min-height:100vh;color:var(--muted);justify-content:center;align-items:center;display:flex}.local-banner{color:#92400e;background:#fef3c7;align-items:center;gap:8px;padding:10px 16px;font-size:14px;display:flex}.banner-close{color:#92400e;cursor:pointer;background:0 0;border:none;margin-left:auto;padding:4px 8px;font-size:16px}.app-header{padding:16px;padding-top:calc(16px + env(safe-area-inset-top));justify-content:space-between;align-items:center;display:flex}.app-header h1{margin:0;font-size:22px}.header-right{align-items:center;gap:10px;display:flex}.sync-status{color:var(--muted);font-size:12px}.sync-syncing{color:var(--primary)}.sync-error{color:var(--danger)}.app-main{padding:0 16px}.composer{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:12px;box-shadow:0 1px 3px #0000000f}.composer-input{resize:none;width:100%;font:inherit;background:0 0;border:none;outline:none;min-height:84px;font-size:17px}.composer-row{flex-wrap:wrap;align-items:center;gap:8px;margin-top:8px;display:flex}.composer-select,.composer-tags{font:inherit;border:1px solid var(--border);color:var(--text);background:#fff;border-radius:8px;padding:8px 10px;font-size:14px}.composer-tags{flex:1;min-width:120px}.btn{font:inherit;border:1px solid var(--border);color:var(--text);cursor:pointer;background:#fff;border-radius:10px;min-height:42px;padding:10px 18px;font-size:15px}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.5;cursor:default}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-dark)}.btn-sm{border-radius:8px;min-height:34px;padding:6px 12px;font-size:13px}.btn-danger{color:var(--danger);border-color:#fecaca}.btn-block{width:100%}.btn-ghost{color:var(--muted);background:0 0;border:none}.toolbar{flex-wrap:wrap;align-items:center;gap:8px;margin-top:16px;display:flex}.search-input{min-width:140px;font:inherit;border:1px solid var(--border);background:#fff;border-radius:10px;flex:1;padding:9px 12px;font-size:15px}.archive-toggle{color:var(--muted);align-items:center;gap:6px;font-size:14px;display:flex}.spacer{flex:1}.muted{color:var(--muted);font-size:14px}.tag-filter-row{flex-wrap:wrap;gap:6px;margin-top:10px;display:flex}.tag-chip{border:1px solid var(--border);color:var(--primary);cursor:pointer;background:#fff;border-radius:999px;padding:3px 10px;font-size:13px}.tag-chip.active{background:var(--primary);color:#fff;border-color:var(--primary)}.idea-list{flex-direction:column;gap:12px;margin-top:16px;display:flex}.idea-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:14px}.idea-card.pinned{border-left:4px solid var(--primary)}.idea-card.archived{opacity:.65}.idea-content{white-space:pre-wrap;word-break:break-word;margin:0 0 10px}.idea-meta{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.category-chip{color:#fff;white-space:nowrap;border-radius:6px;padding:2px 8px;font-size:12px}.idea-time{color:var(--muted);margin-left:auto;font-size:12px}.idea-actions{flex-wrap:wrap;gap:8px;margin-top:10px;display:flex}.idea-edit textarea{width:100%;font:inherit;border:1px solid var(--border);resize:vertical;border-radius:8px;padding:8px}.empty-hint{text-align:center;padding:32px 0}.login-screen{min-height:100vh;padding:24px;padding-bottom:calc(24px + env(safe-area-inset-bottom));justify-content:center;align-items:center;display:flex}.login-card{background:var(--card);border:1px solid var(--border);border-radius:16px;flex-direction:column;gap:12px;width:100%;max-width:380px;padding:28px 24px;display:flex}.login-card h1{text-align:center;margin:0}.login-email{font:inherit;border:1px solid var(--border);border-radius:10px;padding:12px;font-size:16px}.login-error{color:var(--danger);margin:0;font-size:14px}.modal-backdrop{z-index:50;background:#0006;justify-content:center;align-items:flex-end;display:flex;position:fixed;inset:0}.modal{background:var(--card);width:100%;max-width:720px;max-height:85vh;padding:20px 16px;padding-bottom:calc(20px + env(safe-area-inset-bottom));border-radius:16px 16px 0 0;overflow-y:auto}.modal-header{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.modal-header h2{margin:0;font-size:18px}.category-list{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.category-item{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.category-add{border-top:1px solid var(--border);flex-direction:column;gap:10px;margin-top:20px;padding-top:16px;display:flex}.category-name-input{font:inherit;border:1px solid var(--border);border-radius:10px;flex:1;min-width:140px;padding:10px 12px;font-size:15px}.color-palette{flex-wrap:wrap;gap:8px;display:flex}.color-dot{cursor:pointer;border:2px solid #0000;border-radius:50%;width:30px;height:30px;padding:0}.color-dot.selected{border-color:var(--text);box-shadow:inset 0 0 0 2px #fff}@media (width>=640px){.modal-backdrop{align-items:center;padding:24px}.modal{border-radius:16px}}