:root{--bg: #f7f8fa;--surface: #ffffff;--border: #dde1e6;--text: #1a1d23;--text-muted: #5b6270;--accent: #0b5fff;--accent-hover: #0a4fd6;--danger: #c62828;--success: #1a7f37;--discard-bg: #f1f2f4;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-size:14px}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.app-shell{max-width:1100px;margin:0 auto;padding:24px 20px 80px}.top-bar{display:flex;align-items:center;gap:8px;margin-bottom:20px}.top-bar h1{font-size:18px;margin:0}.top-bar .subtitle{color:var(--text-muted);font-size:13px}.breadcrumbs{font-size:13px;color:var(--text-muted);margin-bottom:16px}.breadcrumbs a{color:var(--text-muted)}.breadcrumbs .sep{margin:0 6px}.breadcrumbs .current{color:var(--text);font-weight:600}.card{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:16px;margin-bottom:16px}.card h2{font-size:15px;margin:0 0 12px}.list-links{list-style:none;margin:0;padding:0}.list-links li{padding:10px 0;border-bottom:1px solid var(--border)}.list-links li:last-child{border-bottom:none}.list-links .meta{color:var(--text-muted);font-size:12px;margin-left:8px}form.inline-form{display:flex;flex-wrap:wrap;gap:8px;align-items:flex-end}.field{display:flex;flex-direction:column;gap:4px}.field label{font-size:12px;color:var(--text-muted)}.field input,.field select,.field textarea{border:1px solid var(--border);border-radius:6px;padding:6px 8px;font-size:13px;font-family:inherit;background:var(--surface);color:var(--text)}.field input,.field select{min-width:120px}button{border:1px solid var(--accent);background:var(--accent);color:#fff;border-radius:6px;padding:7px 14px;font-size:13px;cursor:pointer;font-weight:500}button:hover{background:var(--accent-hover)}button:disabled{opacity:.5;cursor:not-allowed}button.secondary{background:var(--surface);color:var(--accent)}button.secondary:hover{background:#eef3ff}button.danger{background:var(--surface);color:var(--danger);border-color:var(--danger)}.error-banner{background:#fdecea;color:var(--danger);border:1px solid #f5c2c0;border-radius:6px;padding:8px 12px;margin-bottom:12px;font-size:13px}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:16px}.tabs a,.tabs button{padding:8px 12px;color:var(--text-muted);border-bottom:2px solid transparent;font-size:13px;font-weight:500;background:none;border-left:none;border-right:none;border-top:none;cursor:pointer;font-family:inherit}.tabs a.active,.tabs button.active{color:var(--accent);border-bottom-color:var(--accent)}.tabs a:hover{text-decoration:none;color:var(--accent)}table{width:100%;border-collapse:collapse;font-size:13px}th,td{padding:6px 8px;border-bottom:1px solid var(--border);text-align:left}th{color:var(--text-muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.02em}tr.discarded td{color:var(--text-muted);background:var(--discard-bg)}td.score,th.score{text-align:right;font-variant-numeric:tabular-nums}.score-discarded{text-decoration:line-through;color:var(--text-muted)}.badge{display:inline-block;padding:1px 6px;border-radius:4px;font-size:11px;font-weight:600;background:#eef3ff;color:var(--accent)}.badge.warn{background:#fff4e0;color:#8a5a00}.badge.muted{background:var(--discard-bg);color:var(--text-muted)}.rank-cell{font-weight:700;width:32px}.math-row td{background:#fafbfc;padding:10px 12px}.toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;flex-wrap:wrap;gap:8px}textarea.paste-box{width:100%;min-height:90px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}.hint{font-size:12px;color:var(--text-muted)}.empty-state{color:var(--text-muted);font-size:13px;padding:12px 0}.feedback-fab{position:fixed;right:20px;bottom:20px;z-index:100;border-radius:20px;padding:10px 18px;box-shadow:0 2px 8px #00000026}.feedback-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000059;display:flex;align-items:center;justify-content:center;z-index:200}.feedback-panel{width:420px;max-width:calc(100vw - 32px);margin:0}.print-shell{max-width:1000px;margin:24px auto;padding:0 16px 48px}.print-toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.print-meta{color:var(--text-muted);margin-bottom:16px}.rc-sheet-table{width:100%;border-collapse:collapse}.rc-sheet-table th,.rc-sheet-table td{border:1px solid #000;padding:8px;text-align:left;font-size:13px}.rc-sheet-table .print-hint{font-size:10px;font-weight:400;color:var(--text-muted)}.rc-blank-cell{height:42px}.print-footer{margin-top:32px;display:flex;flex-direction:column;gap:28px;font-size:13px}@media print{.no-print{display:none!important}body{background:#fff}.print-shell{margin:0;padding:0;max-width:none}}.home{--home-hero-from: #0b3d91;--home-hero-to: #0b5fff}.home-nav{max-width:1100px;margin:0 auto;padding:20px 20px 0;display:flex;align-items:center;gap:8px}.home-nav .home-logo{font-weight:700;font-size:16px;color:var(--text)}.home-nav .home-logo span{color:var(--accent)}.home-nav .home-nav-links{margin-left:auto;display:flex;align-items:center;gap:20px}.home-nav .home-nav-links a{color:var(--text-muted);font-size:13px;font-weight:500}.home-nav .home-nav-links a:hover{color:var(--text);text-decoration:none}.home-nav .btn{display:inline-block}.btn{border:1px solid var(--accent);background:var(--accent);color:#fff;border-radius:6px;padding:8px 16px;font-size:13px;font-weight:600;cursor:pointer;text-decoration:none;display:inline-block}.btn:hover{background:var(--accent-hover);text-decoration:none}.btn.btn-lg{padding:12px 22px;font-size:14px}.btn.btn-ghost{background:transparent;color:var(--accent)}.btn.btn-ghost:hover{background:#eef3ff}.btn.btn-on-dark{background:#fff;color:var(--home-hero-to);border-color:#fff}.btn.btn-on-dark:hover{background:#eef3ff}.btn.btn-ghost-on-dark{background:transparent;color:#fff;border-color:#fff9}.btn.btn-ghost-on-dark:hover{background:#ffffff1f}.home-hero{background:linear-gradient(135deg,var(--home-hero-from),var(--home-hero-to));color:#fff;margin-top:20px;padding:64px 20px 80px}.home-hero-inner{max-width:1100px;margin:0 auto;text-align:center}.home-hero-eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:12px;font-weight:700;color:#ffffffbf;margin-bottom:16px}.home-hero h1{font-size:40px;line-height:1.15;margin:0 0 16px;font-weight:700}.home-hero p.home-hero-sub{font-size:16px;line-height:1.6;color:#ffffffe0;max-width:620px;margin:0 auto 32px}.home-hero-ctas{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.home-section{max-width:1100px;margin:0 auto;padding:64px 20px}.home-section-header{text-align:center;max-width:640px;margin:0 auto 40px}.home-section-header h2{font-size:26px;margin:0 0 12px}.home-section-header p{color:var(--text-muted);font-size:14px;line-height:1.6;margin:0}.home-feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}@media (max-width: 800px){.home-feature-grid{grid-template-columns:1fr}}.home-feature-card{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:20px}.home-feature-card .home-feature-icon{width:36px;height:36px;border-radius:8px;background:#eef3ff;color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:14px}.home-feature-card h3{font-size:15px;margin:0 0 8px}.home-feature-card p{color:var(--text-muted);font-size:13px;line-height:1.6;margin:0}.home-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}@media (max-width: 900px){.home-steps{grid-template-columns:repeat(2,1fr)}}@media (max-width: 520px){.home-steps{grid-template-columns:1fr}}.home-step{position:relative;padding-top:8px}.home-step .home-step-num{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--accent);color:#fff;font-size:13px;font-weight:700;margin-bottom:12px}.home-step h3{font-size:14px;margin:0 0 6px}.home-step p{color:var(--text-muted);font-size:13px;line-height:1.6;margin:0}.home-section-alt{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.home-systems-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}@media (max-width: 800px){.home-systems-list{grid-template-columns:1fr}}.home-systems-list li{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:14px 16px;font-size:13px;color:var(--text-muted)}.home-systems-list li strong{display:block;color:var(--text);font-size:13px;margin-bottom:4px}.home-cta{background:linear-gradient(135deg,var(--home-hero-from),var(--home-hero-to));color:#fff;border-radius:12px;padding:48px 32px;text-align:center;max-width:1100px;margin:0 auto 64px}.home-cta h2{font-size:24px;margin:0 0 12px}.home-cta p{color:#ffffffe0;font-size:14px;margin:0 0 24px}.home-footer{border-top:1px solid var(--border);padding:24px 20px}.home-footer-note{max-width:1100px;margin:0 auto 16px;color:var(--text-muted);font-size:12px;line-height:1.6}.home-footer-inner{max-width:1100px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:12px;color:var(--text-muted)}.home-footer-inner a{color:var(--text-muted)}