*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--accent:#2563eb;--accent-hover:#1d4ed8;--accent-light:#3b82f6;--accent-subtle:#eff6ff;--accent-border:#bfdbfe;--white:#fff;--gray-50:#f9fafb;--gray-100:#f3f4f6;--gray-150:#ececec;--gray-200:#e5e7eb;--gray-300:#d1d5db;--gray-400:#9ca3af;--gray-500:#6b7280;--gray-600:#4b5563;--gray-700:#374151;--gray-800:#1f2937;--gray-900:#111827;--bg:#fff;--bg-page:#f5f6f8;--surface:#fff;--border:#e5e7eb;--border-strong:#d1d5db;--text:#111827;--text-2:#374151;--text-3:#6b7280;--text-muted:#9ca3af;--success:#16a34a;--error:#dc2626;--warning:#d97706;--nav-h:56px;--r-sm:8px;--r-md:12px;--r-lg:16px;--r-xl:20px;--shadow-xs:0 1px 2px #0000000d;--shadow-sm:0 1px 3px #00000014, 0 1px 2px #0000000a;--shadow:0 2px 8px #00000014, 0 1px 3px #0000000d;--shadow-md:0 4px 16px #0000001a, 0 2px 6px #0000000f;--shadow-lg:0 8px 32px #0000001f, 0 4px 12px #00000012;--shadow-xl:0 16px 48px #00000024, 0 6px 16px #00000014}html{scroll-behavior:smooth;font-size:16px}body{background:var(--bg-page);color:var(--text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:DM Sans,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.6}code,.mono{font-family:DM Mono,Fira Code,Cascadia Code,monospace}.topnav{height:var(--nav-h);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);z-index:200;background:#ffffffeb;align-items:center;gap:4px;padding:0 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solid var(--border);padding:52px 24px 44px}.hero-badge{background:var(--accent-subtle);color:var(--accent);border:1px solid var(--accent-border);letter-spacing:.01em;border-radius:99px;align-items:center;gap:6px;margin-bottom:20px;padding:4px 12px;font-size:.78rem;font-weight:600;display:inline-flex}.hero h1{letter-spacing:-.035em;color:var(--text);margin-bottom:14px;font-size:clamp(1.9rem,4vw,2.9rem);font-weight:800;line-height:1.1}.hero-sub{color:var(--text-3);max-width:520px;margin:0 auto 28px;font-size:1.02rem;line-height:1.65}.filter-pills{border-bottom:1px solid var(--border);top:var(--nav-h);z-index:100;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#fff;flex-wrap:wrap;justify-content:center;gap:8px;padding:20px 24px;display:flex;position:sticky}.filter-pill{border:1.5px solid var(--border-strong);color:var(--text-3);cursor:pointer;background:#fff;border-radius:99px;padding:6px 16px;font-family:inherit;font-size:.83rem;font-weight:500;transition:all .13s}.filter-pill:hover{border-color:var(--accent);color:var(--accent)}.filter-pill.active{background:var(--text);border-color:var(--text);color:#fff}.section-label{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);max-width:1100px;margin:0 auto;padding:24px 24px 10px;font-size:.7rem;font-weight:700}.tools-grid{grid-template-columns:repeat(auto-fill,minmax(195px,1fr));gap:14px;max-width:1100px;margin:0 auto;padding:20px 24px 40px;display:grid}.tool-card{border:1.5px solid var(--border);border-radius:var(--r-lg);cursor:pointer;background:#fff;padding:18px 16px 16px;text-decoration:none;transition:all .18s;display:block}.tool-card:hover{border-color:var(--accent);box-shadow:0 0 0 3px #2563eb12, 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0}}.btn{border-radius:var(--r-sm);cursor:pointer;white-space:nowrap;letter-spacing:-.01em;border:none;justify-content:center;align-items:center;gap:6px;padding:9px 18px;font-family:inherit;font-size:.855rem;font-weight:600;line-height:1;text-decoration:none;transition:all .13s;display:inline-flex}.btn:disabled{opacity:.4;cursor:not-allowed;pointer-events:none}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{color:var(--text-2);border:1.5px solid var(--border-strong);background:#fff}.btn-secondary:hover{background:var(--gray-50);border-color:var(--gray-400)}.btn-ghost{color:var(--text-3);background:0 0}.btn-ghost:hover{background:var(--gray-100);color:var(--text)}.btn-danger{color:var(--error);background:#fef2f2;border:1.5px solid #fecaca}.btn-danger:hover{background:#fee2e2}.btn-sm{border-radius:6px;padding:5px 11px;font-size:.79rem}.btn-lg{border-radius:10px;padding:11px 24px;font-size:.97rem}.btn-icon{width:32px;height:32px;padding:7px}.input{border:1.5px solid var(--border);border-radius:var(--r-sm);width:100%;color:var(--text);background:#fff;outline:none;padding:9px 13px;font-family:inherit;font-size:.875rem;transition:border-color .13s,box-shadow .13s}.input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #2563eb1a}.input::placeholder{color:var(--text-muted)}textarea.input{resize:vertical;min-height:80px;line-height:1.5}.form-label{color:var(--text-3);letter-spacing:.01em;margin-bottom:5px;font-size:.79rem;font-weight:600;display:block}.form-group{margin-bottom:14px}.range-row{align-items:center;gap:12px;margin-bottom:12px;display:flex}.range-label{color:var(--text-3);flex-shrink:0;min-width:130px;font-size:.83rem}input[type=range]{accent-color:var(--accent);cursor:pointer;flex:1}.card{border:1.5px solid var(--border);border-radius:var(--r-md);background:#fff;padding:18px}.card+.card{margin-top:10px}.card-title{color:var(--text-3);letter-spacing:.01em;text-transform:uppercase;margin-bottom:12px;font-size:.83rem;font-weight:700}.file-list{flex-direction:column;gap:7px;margin-bottom:18px;display:flex}.file-item{border:1.5px solid var(--border);border-radius:var(--r-sm);background:#fff;align-items:center;gap:10px;padding:10px 14px;font-size:.855rem;transition:border-color .13s;display:flex}.file-item:hover{border-color:var(--border-strong)}.file-item-name{text-overflow:ellipsis;white-space:nowrap;flex:1;font-weight:500;overflow:hidden}.file-item-size{color:var(--text-muted);flex-shrink:0;font-size:.77rem}.tool-actions{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:18px;display:flex}.notice{background:var(--accent-subtle);border:1px solid var(--accent-border);border-radius:var(--r-sm);color:#1e40af;align-items:flex-start;gap:8px;margin-bottom:16px;padding:10px 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var(--border);border-radius:var(--r-md);cursor:pointer;background:#fff;padding:15px;transition:all .15s}.deck-card:hover{border-color:var(--accent);box-shadow:0 0 0 3px #2563eb12, var(--shadow-sm);transform:translateY(-1px)}.empty-state{text-align:center;color:var(--text-muted);padding:52px 24px}.empty-state svg{opacity:.25;margin:0 auto 14px;display:block}.empty-state p{font-size:.875rem}.toast-container{z-index:9999;pointer-events:none;flex-direction:column;gap:7px;display:flex;position:fixed;bottom:20px;right:20px}.toast{border-radius:var(--r-md);box-shadow:var(--shadow-xl);pointer-events:all;align-items:center;gap:8px;max-width:310px;padding:11px 16px;font-size:.855rem;font-weight:500;animation:.22s cubic-bezier(.4,0,.2,1) toast-in;display:flex}@keyframes toast-in{0%{opacity:0;transform:translate(16px)scale(.96)}to{opacity:1;transform:translate(0)scale(1)}}.toast.success{color:#fff;background:#14532d}.toast.error{color:#fff;background:#7f1d1d}.toast.info{color:#fff;background:#0f172a}@media (width<=640px){.topnav-links .topnav-link:not(.always){display:none}.tools-grid{grid-template-columns:repeat(2,1fr);gap:10px;padding:14px}.tool-card{padding:14px 12px}.hero{padding:28px 16px 24px}.tool-body{padding:20px 16px 60px}.page-grid{grid-template-columns:repeat(auto-fill,minmax(105px,1fr));gap:8px}}.mindmap-wrap{transition:background .2s}.topnav-mobile-menu{z-index:500;background:#fff;flex-direction:column;padding:0;display:none;position:fixed;inset:0}.topnav-mobile-menu.open{display:flex}.topnav-mobile-header{height:var(--nav-h);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:0 16px;display:flex}.topnav-mobile-links{flex-direction:column;flex:1;gap:2px;padding:12px 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12px}.tool-card-icon{width:34px;height:34px;margin-bottom:10px}.tool-card-name{font-size:.83rem}.tool-card-desc{font-size:.72rem}.hero{padding:28px 16px 22px}.hero h1{font-size:1.7rem}.hero-sub{font-size:.9rem}.tool-body{padding:16px 14px 60px}.tool-page-header{padding:14px 16px 12px}.tool-page-header-inner{gap:10px}.tool-page-title{font-size:1.1rem}.page-grid{gap:8px;grid-template-columns:repeat(auto-fill,minmax(95px,1fr))!important}.filter-pills{gap:7px;padding:12px 14px}.filter-pill{padding:5px 12px;font-size:.8rem}.card{padding:14px}.deck-grid{gap:9px;grid-template-columns:repeat(2,1fr)!important}.fc-face{padding:20px 16px}.mindmap-wrap{height:calc(100vh - 160px)!important}.tool-page-header-inner{flex-wrap:wrap}}@media (width<=480px){.tools-grid{grid-template-columns:repeat(2,1fr)!important}.hero h1{font-size:1.5rem}.topnav-logo-text{font-size:.95rem}}