:root{--bg: #0b0d10;--bg-raised: #12151a;--bg-inset: #0e1116;--border: #232830;--border-strong: #323945;--text: #e8ecef;--text-dim: #9aa4ae;--text-faint: #67717c;--accent: #c5f24a;--accent-dim: #9dc22e;--accent-ink: #131a02;--danger: #ff6b6b;--ok: #6fe3a5;--warn: #f4c15d;--radius: 12px;--radius-sm: 8px;--font-display: "Space Grotesk", system-ui, sans-serif;--font-body: "Instrument Sans", system-ui, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:radial-gradient(1200px 500px at 70% -200px,rgba(197,242,74,.07),transparent 60%),var(--bg);color:var(--text);font-family:var(--font-body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}.shell{max-width:1060px;margin:0 auto;padding:0 clamp(16px,4vw,32px) 64px}.topbar{display:flex;align-items:center;justify-content:space-between;padding:20px 0}.brand{display:flex;align-items:baseline;gap:10px}.brand-mark{font-family:var(--font-mono);font-weight:600;color:var(--accent);font-size:15px}.brand-name{font-family:var(--font-display);font-weight:700;font-size:18px;letter-spacing:-.01em}.topnav{display:flex;align-items:center;gap:16px}.topnav a{color:var(--text-dim);text-decoration:none;font-size:16px;padding:8px 4px}.topnav a:hover,.topnav a:focus-visible{color:var(--text)}.badge{font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;text-transform:uppercase;color:var(--accent);border:1px solid rgba(197,242,74,.35);background:#c5f24a14;border-radius:999px;padding:5px 12px;white-space:nowrap}.badge-local{color:var(--ok);border-color:#6fe3a559;background:#6fe3a514}.hero{padding:clamp(24px,6vw,56px) 0 clamp(20px,4vw,40px);max-width:780px}.hero h1{font-family:var(--font-display);font-size:clamp(30px,5vw,46px);line-height:1.12;letter-spacing:-.02em;margin:0 0 16px;text-wrap:balance}.hero .accent{color:var(--accent)}.hero-sub{color:var(--text-dim);font-size:clamp(16px,1.6vw,17px);max-width:68ch;margin:0;text-wrap:pretty}.layout{display:flex;flex-direction:column;gap:20px}.endpoints{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:stretch}.flow-arrow{display:flex;align-items:center;color:var(--accent);opacity:.9}@media(max-width:760px){.endpoints{grid-template-columns:1fr}.flow-arrow{justify-content:center;transform:rotate(90deg);height:32px}}.card{background:var(--bg-raised);border:1px solid var(--border);border-radius:var(--radius);padding:24px}.card-head{margin-bottom:16px}.card-head h2{font-family:var(--font-display);font-size:19px;letter-spacing:-.01em;margin:0 0 4px;display:flex;align-items:center;gap:10px}.hint{color:var(--text-dim);font-size:16px;margin:0;text-wrap:pretty}.micro{color:var(--text-faint);font-size:13px;margin:10px 0 0}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.field span{font-size:13px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--text-faint)}.field span strong{color:var(--accent)}input,select,textarea{font-family:var(--font-body);font-size:16px;color:var(--text);background:var(--bg-inset);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 12px;width:100%;transition:border-color .15s ease}textarea{font-family:var(--font-mono);font-size:14px;line-height:1.55;resize:vertical;min-height:44px}input:focus-visible,select:focus-visible,textarea:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:1px;border-color:transparent}input[type=range]{padding:0;accent-color:var(--accent);height:32px;border:none;background:transparent}.model-row{display:flex;flex-direction:column;gap:8px}.price-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.field.small{margin-bottom:0}.case-row{display:flex;gap:10px;align-items:flex-start}.case-row .grow{flex:1}.icon-btn{margin-top:26px;width:44px;height:44px;flex:0 0 44px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg-inset);color:var(--text-dim);font-size:20px;cursor:pointer;transition:color .15s ease,border-color .15s ease}.icon-btn:hover:not(:disabled){color:var(--danger);border-color:var(--danger)}.icon-btn:disabled{opacity:.35;cursor:not-allowed}.settings-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px}.settings-grid .field{margin-bottom:0}.primary-btn,.secondary-btn,.ghost-btn{font-family:var(--font-display);font-weight:600;border-radius:var(--radius-sm);cursor:pointer;transition:transform .15s ease,background .15s ease,color .15s ease}.primary-btn{background:var(--accent);color:var(--accent-ink);border:none;font-size:17px;padding:14px 32px;min-height:48px}.primary-btn:hover:not(:disabled){background:#d4fa66;transform:translateY(-1px)}.primary-btn:disabled{background:var(--border-strong);color:var(--text-faint);cursor:not-allowed}.secondary-btn{background:transparent;color:var(--danger);border:1px solid var(--danger);font-size:16px;padding:13px 28px;min-height:48px}.ghost-btn{background:transparent;color:var(--accent);border:1px dashed var(--border-strong);font-size:15px;padding:10px 18px;min-height:44px}.ghost-btn:hover{border-color:var(--accent)}.run-bar{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.validation{color:var(--warn);font-size:15px}.spinner{width:14px;height:14px;flex:0 0 14px;border:2px solid var(--border-strong);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.spinner{animation-duration:2.4s}.primary-btn:hover:not(:disabled){transform:none}}.error-text{color:var(--danger);font-size:15px;margin:6px 0 0;font-family:var(--font-mono)}.iteration-timeline{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}.timeline-node{display:flex;flex-direction:column;align-items:flex-start;gap:2px;min-width:96px;min-height:44px;background:var(--bg-inset);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 14px;color:var(--text);cursor:pointer;position:relative}.timeline-node.open{border-color:var(--accent)}.timeline-node.pass .timeline-score{color:var(--ok)}.timeline-node.close .timeline-score{color:var(--warn)}.timeline-node.fail .timeline-score{color:var(--danger)}.timeline-label{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-faint)}.timeline-score{font-family:var(--font-mono);font-size:16px;font-weight:600}.timeline-best{position:absolute;top:-8px;right:8px;font-size:10px;text-transform:uppercase;letter-spacing:.08em;background:var(--accent);color:var(--accent-ink);padding:1px 6px;border-radius:999px;font-weight:700}.iteration-detail{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}.case-detail{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-inset)}.case-detail summary{display:flex;align-items:center;gap:12px;padding:12px 14px;cursor:pointer;list-style:none}.case-detail summary::-webkit-details-marker{display:none}.case-name{font-family:var(--font-display);font-weight:600;font-size:14px;white-space:nowrap}.sim-badge{font-family:var(--font-mono);font-size:13px;padding:2px 8px;border-radius:999px;border:1px solid var(--border-strong);white-space:nowrap}.sim-badge.pass{color:var(--ok);border-color:#6fe3a566}.sim-badge.close{color:var(--warn);border-color:#f4c15d66}.sim-badge.fail{color:var(--danger);border-color:#ff6b6b66}.case-preview{color:var(--text-faint);font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:0 14px 14px}@media(max-width:760px){.compare-grid{grid-template-columns:1fr}}.compare-grid h4{margin:0 0 6px;font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-faint)}.compare-grid pre,.migrated-prompt pre{font-family:var(--font-mono);font-size:13px;line-height:1.55;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px;margin:0;white-space:pre-wrap;word-break:break-word;max-height:340px;overflow:auto}.cost-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin:20px 0}.cost-card{background:var(--bg-inset);border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px 18px;display:flex;flex-direction:column;gap:4px}.cost-card.good{border-color:#6fe3a573}.cost-card.bad{border-color:#ff6b6b73}.cost-label{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-faint)}.cost-value{font-family:var(--font-display);font-size:28px;font-weight:700;letter-spacing:-.01em}.cost-value em{font-style:normal;font-size:14px;color:var(--text-faint);font-weight:400}.cost-card.good .cost-value{color:var(--ok)}.cost-card.bad .cost-value{color:var(--danger)}.cost-sub{color:var(--text-dim);font-size:13px}.migrated-prompt{margin-top:8px}.migrated-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}.migrated-head h3{font-family:var(--font-display);font-size:16px;margin:0}.run-log{margin-top:18px;border-top:1px solid var(--border);padding-top:12px}.run-log summary{color:var(--text-dim);cursor:pointer;font-size:14px}.run-log ul{list-style:none;margin:10px 0 0;padding:0;font-family:var(--font-mono);font-size:12.5px;max-height:240px;overflow:auto}.run-log li{padding:2px 0;color:var(--text-dim)}.log-time{color:var(--text-faint)}.log-error{color:var(--danger)}.log-done{color:var(--ok)}.log-optimize{color:var(--accent)}.footer{margin-top:48px;border-top:1px solid var(--border);padding-top:24px;color:var(--text-faint);font-size:14px}.footer a{color:var(--text-dim)}.footer code{font-family:var(--font-mono);font-size:13px;background:var(--bg-raised);border:1px solid var(--border);border-radius:4px;padding:1px 5px}