*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #08080f;--bg-panel: #0e0e1a;--bg-card: #141428;--bg-input: #1a1a2e;--border: #2a2a44;--accent: #ff6b00;--accent2: #4fc3f7;--green: #4caf50;--red: #f44336;--orange: #ff9800;--text: #d0d0e8;--text-dim: #666688;--text-bright:#f0f0ff;--radius: 8px;--radius-sm: 4px;--font-mono: "Courier New", "Consolas", monospace;--font-ui: "Segoe UI", system-ui, sans-serif}html,body,#root{height:100%;background:var(--bg);color:var(--text);font-family:var(--font-ui);font-size:13px;line-height:1.5;overflow-x:hidden}.app{display:flex;flex-direction:column;min-height:100vh}.app-header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 20px;background:linear-gradient(135deg,#0d0d1f,#141428);border-bottom:1px solid 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var(--border);position:sticky;top:0;background:var(--bg-card);z-index:1}.modal-title-row{display:flex;align-items:center;gap:12px}.modal-logo{font-size:28px}.modal-title{font-size:20px;font-weight:700;color:var(--accent)}.modal-close{background:none;border:none;color:var(--text-dim);font-size:18px;cursor:pointer;padding:4px 8px;border-radius:var(--radius-sm);transition:color .15s,background .15s}.modal-close:hover{color:var(--text-bright);background:#ffffff14}.modal-body{padding:24px;display:flex;flex-direction:column;gap:24px}.about-section h3{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--accent2);margin-bottom:10px}.about-section p{font-size:13px;color:var(--text);line-height:1.65}.about-section p+p{margin-top:8px}.about-section strong{color:var(--text-bright)}.about-section em{color:var(--accent2);font-style:normal}.formula-box{background:var(--bg-input);border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:var(--radius-sm);padding:12px 16px;margin:12px 0;font-family:var(--font-mono);font-size:13px;color:var(--accent2);text-align:center}.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:10px}@media (max-width: 600px){.info-grid{grid-template-columns:1fr}}.info-card{background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius);padding:12px}.info-card h4{font-size:11px;font-weight:700;color:var(--accent);margin-bottom:8px;text-transform:uppercase;letter-spacing:.5px}.info-card ul{list-style:none;display:flex;flex-direction:column;gap:5px}.info-card li{font-size:11px;color:var(--text);line-height:1.4;padding-left:10px;position:relative}.info-card li:before{content:"•";position:absolute;left:0;color:var(--accent)}.info-note{font-size:10px!important;color:var(--text-dim)!important;font-style:italic;margin-top:6px!important}.param-table{display:flex;flex-direction:column;gap:8px;margin-top:8px}.param-row-about{display:grid;grid-template-columns:36px 120px 1fr;gap:10px;align-items:start;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 12px}.param-sym{font-family:var(--font-mono);font-size:16px;font-weight:700;color:var(--accent);line-height:1;padding-top:1px}.param-name{font-size:12px;font-weight:600;color:var(--text-bright);padding-top:1px}.param-desc{font-size:11px;color:var(--text-dim);line-height:1.5}.steps{display:flex;flex-direction:column;gap:6px;padding-left:20px;margin-top:8px}.steps li{font-size:12px;color:var(--text);line-height:1.5}.steps li strong{color:var(--accent2)}.steps li em{color:var(--text-dim);font-style:normal}.tips{display:flex;flex-direction:column;gap:6px;padding-left:16px;list-style:none;margin-top:8px}.tips li{font-size:12px;color:var(--text);line-height:1.5;position:relative;padding-left:12px}.tips li:before{content:"→";position:absolute;left:0;color:var(--accent);font-weight:700}.about-credit{background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius);padding:14px 18px;text-align:center}.about-credit p{font-size:12px;color:var(--text-dim)}.credit-link{color:var(--accent2);text-decoration:none}.credit-link:hover{text-decoration:underline}