:root{color-scheme:dark;--bg:#0c0a09;--bg-warm:#1c1917;--card:rgba(28,25,23,0.92);--card-hover:rgba(41,37,36,0.95);--text:#fafaf9;--text-sub:#a8a29e;--accent:#f59e0b;--accent-soft:rgba(245,158,11,0.15);--accent-glow:rgba(245,158,11,0.08);--success:#34d399;--danger:#fb7185;--border:rgba(168,162,158,0.12);--border-focus:rgba(245,158,11,0.4);--radius:14px}*{box-sizing:border-box;margin:0;padding:0}body,html{min-height:100dvh;font-family:Inter,Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}.page{max-width:860px;margin:0 auto;padding:40px 20px 60px}.header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:32px}.header h1{font-size:clamp(1.35rem,2.4vw,1.8rem);font-weight:800;letter-spacing:-.02em;background:linear-gradient(135deg,var(--accent),#fbbf24);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.header-actions{display:flex;align-items:center;gap:8px}.mode-toggle{flex-shrink:0;border:1px solid var(--border);background:var(--bg-warm);color:var(--text-sub);font-size:.8rem;font-weight:600;padding:8px 14px;border-radius:10px;cursor:pointer;transition:border-color .15s,color .15s}.mode-toggle:hover{border-color:var(--border-focus);color:var(--text)}.restart-btn{flex-shrink:0;border:1px solid rgba(251,113,133,.3);background:rgba(251,113,133,.08);color:#fda4af;font-size:.8rem;font-weight:600;padding:8px 14px;border-radius:10px;cursor:pointer;transition:border-color .15s,background 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rgba(245,158,11,.18)}.convert-btn:hover{transform:translateY(-1px)}.convert-btn:active{transform:translateY(0)}.convert-btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}.change-link{border:none;background:none;color:var(--text-sub);font-size:.82rem;text-decoration:underline;text-underline-offset:3px;cursor:pointer;padding:0}.change-link:hover{color:var(--text)}.change-format-link{border:none;background:none;color:var(--accent);font-size:.82rem;text-decoration:underline;text-underline-offset:3px;cursor:pointer;padding:0;font-weight:600}.change-format-link:hover{color:#fbbf24}.results-section{text-align:center}.results-title{font-size:1.4rem;font-weight:800;margin-bottom:6px;background:linear-gradient(135deg,var(--success),#6ee7b7);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.results-path{color:var(--text-sub);font-size:.82rem;margin-bottom:20px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace}.results-list{display:flex;flex-direction:column;gap:14px;max-width:600px;margin:0 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rgba(251,113,133,.14)}.failure-name{color:var(--text);font-size:.86rem;font-weight:650;word-break:break-word}.failure-reason{color:var(--text-sub);font-size:.78rem;line-height:1.4;word-break:break-word}.restart-btn-large{display:block;margin:20px auto 0;border:1px solid var(--border);background:var(--bg-warm);color:var(--text-sub);font-size:.9rem;font-weight:600;padding:12px 28px;border-radius:var(--radius);cursor:pointer;transition:color .15s,border-color .15s}.restart-btn-large:hover{color:var(--text);border-color:var(--border-focus)}.footer{margin-top:40px;padding-top:20px;border-top:1px solid var(--border);color:var(--text-sub);text-align:center;font-size:.85rem;line-height:1.6}.footer a{color:var(--accent);text-decoration:none}.footer a:hover{text-decoration:underline}.popup-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.6);display:grid;place-items:center;z-index:100}.popup{width:min(92vw,480px);background:var(--bg-warm);border:1px solid var(--border);border-radius:var(--radius);padding:24px;text-align:center}.popup h4{margin:0 0 10px;font-size:1.05rem}.popup p{margin:0;color:var(--text-sub);font-size:.9rem}.popup .popup-btn{margin-top:16px;border:0;border-radius:10px;background:var(--accent);color:var(--bg);font-weight:700;padding:10px 20px;cursor:pointer;font-size:.9rem}.route-pipeline{margin:14px 0 4px}.route-steps{display:flex;align-items:flex-start;justify-content:center;flex-wrap:wrap;gap:4px 0}.route-step-wrapper{display:flex;align-items:center;gap:6px}.route-arrow{color:var(--text-sub);font-size:.9rem;flex-shrink:0;opacity:.45}.route-arrow--done{color:var(--success);opacity:1}.route-node{display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 12px;border-radius:8px;border:1.5px solid var(--border);background:var(--bg);min-width:52px;transition:border-color .2s,background 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