:root{--bg: #0f1117;--surface: #1a1d27;--surface2: #22263a;--border: #2e3350;--accent: #6366f1;--accent-contrast: #4f52dd;--accent-light: #a5b4fc;--accent-rose: #f43f5e;--text: #e8eaf6;--text-muted: #8b90a7;--green: #4caf7d;--red: #ff6b6b;--radius: 12px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.6}header{padding:20px 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);max-width:1400px;margin:0 auto}.logo{font-size:1.4rem;font-weight:700;color:var(--text);text-decoration:none;display:flex;align-items:center;gap:8px}.logo-icon{width:32px;height:32px;background:linear-gradient(135deg,var(--accent),#a78bfa);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:16px}.badge{font-size:.7rem;background:#6c63ff33;color:var(--accent-light);border:1px solid rgba(108,99,255,.3);padding:2px 8px;border-radius:99px;font-weight:600}.header-actions{display:flex;align-items:center;gap:12px}.lang-link{font-size:.7rem;font-weight:700;color:var(--text-muted);border:1px solid var(--border);padding:2px 8px;border-radius:99px;text-decoration:none;transition:all .15s}.lang-link:hover{color:var(--text);border-color:var(--accent-light)}.hero{text-align:center;padding:60px 24px 40px;max-width:720px;margin:0 auto}.hero h1{font-size:clamp(2rem,5vw,3rem);font-weight:800;background:linear-gradient(135deg,#fff 0%,var(--accent-light) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1.2;margin-bottom:16px}.hero p{color:var(--text-muted);font-size:1.1rem;margin-bottom:24px}.hero-actions{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-bottom:24px}.hero-link{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border:1px solid var(--border);border-radius:999px;color:var(--text);text-decoration:none;font-size:.85rem;font-weight:600;transition:all .15s}.hero-link:hover{border-color:var(--accent-light);color:#fff}.stats{display:flex;justify-content:center;gap:32px;flex-wrap:wrap}.stat{text-align:center}.stat-num{font-size:1.5rem;font-weight:700;color:var(--accent-light)}.stat-label{font-size:.8rem;color:var(--text-muted)}.app{max-width:1400px;margin:0 auto;padding:0 24px 60px}.controls{display:flex;align-items:center;gap:12px;margin-bottom:20px;flex-wrap:wrap}.level-group{display:flex;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.level-btn{padding:8px 16px;font-size:.85rem;cursor:pointer;background:none;border:none;color:var(--text-muted);transition:all 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6px;border-radius:999px;font-size:.65rem;font-weight:700;letter-spacing:.02em;text-transform:uppercase;background:#f59e0b2e;color:#f59e0b}.cost-row{display:flex;align-items:flex-end;gap:16px;flex-wrap:wrap;margin-bottom:20px;padding:12px 16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}.cost-field{display:flex;flex-direction:column;gap:4px;font-size:.75rem;color:var(--text-muted)}.cost-field select,.cost-field input{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:6px 10px;color:var(--text);font-size:.85rem;font-family:inherit;outline:none}.cost-field select:focus,.cost-field input:focus{border-color:var(--accent)}.cost-field input[type=number]{width:100px}.cost-hint{font-size:.75rem;color:var(--text-muted);margin-left:auto}.cost-hint a{color:var(--accent-light)}.api-key-wrap{display:none;align-items:center;gap:8px;margin-top:12px}.api-key-wrap.visible{display:flex}.api-key-wrap input{flex:1;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:8px 12px;color:var(--text);font-size:.85rem;font-family:monospace;outline:none}.api-key-wrap input:focus{border-color:var(--accent)}.api-info{font-size:.75rem;color:var(--text-muted)}.api-help{margin-top:10px}.ai-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;margin-top:12px}.ai-panel-title{font-size:.95rem;font-weight:700;margin:0 0 12px;color:var(--text)}.ai-row{display:flex;align-items:flex-end;gap:14px;flex-wrap:wrap;margin-bottom:12px}.ai-key-field{flex:1 1 260px}.ai-key-field input{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:8px 12px;color:var(--text);font-size:.85rem;font-family:monospace;outline:none;width:100%}.ai-key-field input:focus{border-color:var(--accent)}.ai-remember{display:flex;align-items:center;gap:8px;font-size:.8rem;color:var(--text-muted);cursor:pointer;padding-bottom:8px}.ai-remember input[type=checkbox]{accent-color:var(--accent);width:16px;height:16px}.ai-estimate{font-size:.8rem;color:var(--text-muted);line-height:1.6;margin:0;padding:10px 12px;background:var(--surface2);border-radius:8px}.ai-estimate strong{color:var(--accent-light)}.ai-steps{list-style:none;margin:12px 0 0;padding:0;display:flex;flex-direction:column;gap:6px}.ai-step{display:flex;align-items:baseline;gap:10px;font-size:.8rem;color:var(--text-muted);background:var(--surface2);border-radius:8px;padding:7px 10px}.ai-step-mark{flex:0 0 auto}.ai-step.done .ai-step-mark{color:var(--green)}.ai-step.failed .ai-step-mark{color:var(--red)}.ai-step.running .ai-step-mark{color:var(--accent-light)}.ai-step-name{flex:0 0 70px;font-weight:600;color:var(--text)}.ai-step-detail{flex:1 1 auto}.ledger-evidence,.ledger-dispute{display:block;margin-top:4px;font-size:.75rem;font-style:normal;color:var(--text-muted)}.ledger-dispute{color:var(--accent-light)}.panels{display:grid;grid-template-columns:1fr 1fr;gap:20px}@media(max-width:768px){.panels{grid-template-columns:1fr}}.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.panel-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border);background:var(--surface2)}.panel-title{font-size:.85rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.token-badge{font-size:.8rem;color:var(--text-muted);background:var(--bg);padding:2px 10px;border-radius:99px;border:1px solid var(--border)}.token-badge.improved{color:var(--green);border-color:#4caf7d4d;background:#4caf7d14}textarea{width:100%;min-height:320px;padding:16px;background:transparent;border:none;color:var(--text);font-size:.9rem;font-family:inherit;resize:vertical;outline:none;line-height:1.7}textarea::placeholder{color:var(--text-muted)}.actions{display:flex;justify-content:center;gap:12px;margin:20px 0;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:10px;font-size:.95rem;font-weight:600;cursor:pointer;border:none;transition:all .15s}.btn-primary{background:linear-gradient(135deg,var(--accent),#8b5cf6);color:#fff;box-shadow:0 4px 20px #6c63ff4d}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 24px #6c63ff66}.btn-primary:active{transform:translateY(0)}.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-ghost{background:var(--surface);color:var(--text-muted);border:1px solid var(--border)}.btn-ghost:hover{color:var(--text);border-color:var(--accent)}.export-group{display:inline-flex;align-items:stretch}.export-btn{border-top-right-radius:0;border-bottom-right-radius:0;border-right:none}.export-format{background:var(--surface);color:var(--text-muted);border:1px solid var(--border);border-top-right-radius:10px;border-bottom-right-radius:10px;padding:0 8px;font-size:.85rem;font-family:inherit;outline:none}.export-format:focus{border-color:var(--accent)}.savings{display:none;background:var(--surface);border:1px solid rgba(76,175,125,.3);border-radius:var(--radius);padding:16px 20px;margin-bottom:20px;text-align:center}.savings.visible{display:block}.savings-title{font-size:.85rem;color:var(--text-muted);margin-bottom:8px}.savings-row{display:flex;justify-content:center;align-items:center;gap:24px;flex-wrap:wrap}.saving-item{text-align:center}.saving-num{font-size:1.4rem;font-weight:700;color:var(--green)}.saving-label{font-size:.75rem;color:var(--text-muted)}.spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error{display:none;color:var(--red);font-size:.85rem;text-align:center;margin-top:8px;padding:10px 16px;background:#ff6b6b14;border:1px solid rgba(255,107,107,.2);border-radius:8px}.error.visible{display:block}.how{max-width:900px;margin:60px auto 0;padding:0 24px;text-align:center}.how h2{font-size:1.6rem;margin-bottom:8px}.how-sub{color:var(--text-muted);margin-bottom:40px}#benchmark h3{font-size:1.05rem;text-align:left;margin:28px 0 6px}#benchmark .advisor-sub{text-align:left;margin-bottom:10px}#benchmark .advisor-scroll{margin-bottom:8px}.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}.step{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px 20px}.step-icon{font-size:2rem;margin-bottom:12px}.step h3{font-size:1rem;margin-bottom:8px}.step p{font-size:.85rem;color:var(--text-muted)}.faq{max-width:720px;margin:60px auto 0;padding:0 24px}.faq h2{text-align:center;font-size:1.6rem;margin-bottom:32px}.faq-item{border-bottom:1px solid var(--border);padding:20px 0}.faq-item:last-child{border:none}.faq-q{font-weight:600;margin-bottom:8px;cursor:pointer}.faq-a{color:var(--text-muted);font-size:.9rem}.faq-a a{color:var(--accent-light);text-decoration:underline}.savings-note{margin-top:10px;text-align:center;font-size:.8rem;color:var(--text-muted)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.ledger{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;margin-bottom:20px}.ledger-header{display:flex;align-items:baseline;flex-wrap:wrap;gap:10px;padding-bottom:10px;border-bottom:1px solid var(--border)}.ledger-title{font-size:.95rem;font-weight:700;margin-right:auto}.ledger-count{font-size:.9rem;font-weight:700}.ledger-count.ok{color:var(--green)}.ledger-count.bad{color:var(--red)}.ledger-sub{font-size:.78rem;color:var(--text-muted)}.ledger-note{font-size:.8rem;color:var(--text-muted);margin:10px 0}.ledger-note.bad{color:var(--red)}.ledger-group{margin-top:12px}.ledger-group-title{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:6px}.ledger-group-count{font-weight:400;text-transform:none;letter-spacing:0}.ledger-list{list-style:none;display:flex;flex-direction:column;gap:4px}.ledger-list li{display:flex;align-items:flex-start;gap:8px;font-size:.82rem;line-height:1.45;padding:3px 6px;border-radius:6px;background:var(--bg)}.ledger-list li.lost{border:1px solid rgba(255,107,107,.45)}.ledger-mark{flex:0 0 auto}.ledger-list li.kept .ledger-mark{color:var(--green)}.ledger-list li.lost .ledger-mark{color:var(--red)}.ledger-anchor{flex:1 1 auto;word-break:break-word;display:flex;flex-direction:column;gap:2px}.ledger-anchor code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.78rem;color:var(--accent-light)}.ledger-suggestion{color:var(--text-muted);font-size:.76rem}.ledger-restore{flex:0 0 auto;background:transparent;color:var(--accent-light);border:1px solid var(--border);border-radius:6px;padding:2px 10px;font-size:.75rem;font-weight:600;cursor:pointer}.ledger-restore:hover,.ledger-restore:focus-visible{border-color:var(--accent);color:var(--text)}.rules-panel{margin-left:8px;font-size:.85rem;color:var(--text-muted)}.rules-summary{cursor:pointer;padding:6px 12px;border:1px solid var(--border);border-radius:999px;list-style:none;user-select:none}.rules-summary::-webkit-details-marker{display:none}.rules-summary:hover,.rules-summary:focus-visible{color:var(--text);border-color:var(--accent-light)}.rules-body{margin-top:10px;padding:14px 16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);max-height:360px;overflow-y:auto}.rules-note{font-size:.78rem;margin-bottom:12px}.rules-group{margin-bottom:14px}.rules-group:last-child{margin-bottom:0}.rules-group-title{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;margin-bottom:6px}.rules-list{list-style:none;display:flex;flex-direction:column;gap:8px}.rules-item label{display:flex;align-items:center;gap:8px;cursor:pointer;color:var(--text);font-size:.82rem}.rules-item input[type=checkbox]{accent-color:var(--accent);width:15px;height:15px;flex:0 0 auto}.rules-item code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.78rem;color:var(--accent-light)}.rules-lossy{font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.03em;color:var(--red);border:1px solid rgba(255,107,107,.4);border-radius:999px;padding:1px 6px}.rules-why{margin:2px 0 0 23px;font-size:.76rem;color:var(--text-muted)}.diffview{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;margin-bottom:20px}.diffview-header{display:flex;align-items:baseline;flex-wrap:wrap;gap:12px;padding-bottom:10px;border-bottom:1px solid var(--border)}.diffview-title{font-size:.95rem;font-weight:700;margin-right:auto}.diffview-legend{display:flex;flex-wrap:wrap;gap:12px;font-size:.75rem;color:var(--text-muted)}.diffview-legend-item{display:flex;align-items:center;gap:4px}.diffview-rules{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}.diffview-rule{display:flex;align-items:center;gap:6px;background:var(--bg);border:1px solid var(--border);border-radius:999px;padding:4px 6px 4px 10px;font-size:.78rem}.diffview-rule code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--accent-light)}.diffview-rule-count{color:var(--text-muted)}.diffview-rule-toggle{background:transparent;color:var(--accent-light);border:1px solid var(--border);border-radius:999px;padding:2px 8px;font-size:.72rem;font-weight:600;cursor:pointer}.diffview-rule-toggle:hover,.diffview-rule-toggle:focus-visible{border-color:var(--accent);color:var(--text)}.diffview-text{margin-top:12px;font-size:.88rem;line-height:1.9;white-space:pre-wrap;word-break:break-word}.diff-change{display:inline}.diff-del{color:var(--red);background:#ff6b6b1a;text-decoration:line-through;border-radius:3px;padding:0 2px}.diff-del.lossy{background:#ff6b6b33}.diff-ins{color:var(--green);background:#4caf7d1f;text-decoration:none;border-radius:3px;padding:0 2px}.diff-undone{background:#a5b4fc2e;color:var(--text);border-radius:3px;padding:0 2px}.diff-blocked{background:#ff6b6b14;border:1px dashed rgba(255,107,107,.4);border-radius:3px;padding:0 2px}.diff-toggle{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;margin:0 1px;background:transparent;color:var(--text-muted);border:1px solid var(--border);border-radius:4px;font-size:.7rem;line-height:1;cursor:pointer;vertical-align:middle}.diff-toggle:hover,.diff-toggle:focus-visible{color:var(--text);border-color:var(--accent)}.advisor{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;margin-bottom:20px}.advisor-header{display:flex;align-items:baseline;flex-wrap:wrap;gap:10px;padding-bottom:10px;border-bottom:1px solid var(--border)}.advisor-title{font-size:.95rem;font-weight:700;margin-right:auto}.advisor-sub{font-size:.78rem;color:var(--text-muted)}.advisor-verdict{margin:14px 0 8px;font-size:.95rem;font-weight:600;line-height:1.5;padding-left:12px;border-left:3px solid var(--accent)}.advisor-verdict.cache{border-left-color:var(--green)}.advisor-verdict.as-is{border-left-color:var(--text-muted)}.advisor-reasons{list-style:none;margin:0 0 14px;display:flex;flex-direction:column;gap:6px;font-size:.8rem;color:var(--text-muted);line-height:1.5}.advisor-reasons li:before{content:"· ";color:var(--accent-light)}.advisor-scroll{overflow-x:auto;margin-top:4px}.advisor-table{width:100%;border-collapse:collapse;font-size:.82rem}.advisor-table th,.advisor-table td{padding:8px 10px;text-align:right;border-bottom:1px solid var(--border);white-space:nowrap}.advisor-table thead th{font-size:.72rem;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);font-weight:700}.advisor-table th[scope=row],.advisor-table thead th:first-child{text-align:left;font-weight:600;white-space:normal}.advisor-table tr.best th[scope=row],.advisor-table tr.best td{background:#4caf7d14}.advisor-table td.good{color:var(--green);font-weight:700}.advisor-pick{display:inline-block;margin-left:8px;font-size:.66rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--green);border:1px solid rgba(76,175,125,.5);border-radius:999px;padding:1px 7px}.advisor-note{font-size:.78rem;color:var(--text-muted);margin:12px 0 0;line-height:1.55}.advisor-group{margin-top:16px}.advisor-group-title{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted)}.advisor-group-count{font-weight:400;text-transform:none;color:var(--red)}.advisor-list{list-style:none;display:flex;flex-direction:column;gap:6px;margin-top:8px}.advisor-list li{display:flex;gap:8px;align-items:flex-start;font-size:.8rem;background:var(--surface2);border-radius:6px;padding:7px 10px}.advisor-mark{color:var(--red);flex:0 0 auto}.advisor-list code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.78rem;color:var(--accent-light)}.advisor-why{display:block;color:var(--text-muted);font-style:normal;font-size:.76rem;margin-top:2px}.advisor-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.advisor-output{width:100%;margin-top:10px;background:var(--bg);border:1px solid var(--border);border-radius:8px;color:var(--text);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.8rem;line-height:1.5;padding:12px;resize:vertical}footer{text-align:center;padding:40px 24px;color:var(--text-muted);font-size:.85rem;border-top:1px solid var(--border);margin-top:60px}footer a{color:var(--accent-light);text-decoration:underline}.copy-success{position:fixed;bottom:24px;right:24px;background:var(--green);color:#fff;padding:10px 20px;border-radius:8px;font-size:.9rem;font-weight:600;opacity:0;transform:translateY(10px);transition:all .3s;pointer-events:none}.copy-success.show{opacity:1;transform:translateY(0)}