:root{--bg: #f4f7fb;--panel: #ffffff;--panel-soft: #edf3f9;--text: #1a2433;--muted: #748196;--line: #dbe4ee;--navy: #102947;--blue: #244f83;--blue-soft: #e7eef7;--teal: #0d8b67;--green-soft: #e9f6f1;--red: #dc2626;--amber: #b45309;--shadow: 0 12px 28px rgba(16, 41, 71, .08);font-family:Noto Sans TC,Microsoft JhengHei,PingFang TC,system-ui,sans-serif;color:var(--text)}h1,h2,.brand p{font-family:"Noto Serif TC",Noto Sans TC,serif}*{box-sizing:border-box}body{margin:0;background:var(--bg)}button,input,select,textarea{font:inherit}button{cursor:pointer}.app-shell{min-height:100vh;display:grid;grid-template-columns:280px minmax(0,1fr) 390px}.sidebar{background:#fff;border-right:1px solid var(--line);padding:24px 18px;display:flex;flex-direction:column;gap:26px;position:sticky;top:0;height:100vh}.brand{display:flex;align-items:center;gap:12px}.brand-mark{width:44px;height:44px;border-radius:10px;display:grid;place-items:center;background:var(--navy);color:#fff}.brand p{margin:0;font-size:20px;font-weight:800;letter-spacing:0}.brand span,.progress-label,.preview-head span,.step-item small,.panel-head p,.feature-card p{color:var(--muted)}.step-list{display:grid;gap:8px}.step-item{width:100%;display:grid;grid-template-columns:30px 1fr;gap:3px 10px;align-items:center;padding:12px;border:1px solid transparent;border-radius:8px;background:transparent;text-align:left;color:var(--text)}.step-item span{width:30px;height:30px;border-radius:99px;display:grid;place-items:center;background:#eef2f7;color:var(--muted);font-size:14px;grid-row:span 2}.step-item strong{font-size:15px}.step-item small{font-size:12px;line-height:1.45}.step-item.active{background:var(--blue-soft);border-color:#bdd0ff}.step-item.active span,.step-item.done 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em{font-style:normal;background:var(--red);border-radius:999px;min-width:20px;height:20px;display:grid;place-items:center;font-size:12px}.mobile-preview-overlay{position:fixed;inset:0;z-index:40;background:#0f172a73;display:grid;place-items:stretch;padding:16px}.mobile-preview-card{background:var(--panel);border-radius:12px;padding:18px;display:flex;flex-direction:column;overflow:hidden;max-height:100%}.mobile-preview-card pre{overflow:auto;flex:1;color:#1f2937;font-size:14px;background:#fbfdff;border:1px solid #edf2f7;border-radius:8px;padding:14px}.print-sheet{display:none}@media(max-width:1180px){.app-shell{grid-template-columns:240px minmax(0,1fr)}.preview-panel{display:none}.mobile-preview-fab{display:inline-flex}.intro-screen{grid-template-columns:1fr}}@media(max-width:820px){.app-shell{display:block}.sidebar{position:static;height:auto;padding:16px;border-right:0;border-bottom:1px solid 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print{body{background:#fff}.sidebar,.workspace,.preview-panel,.mobile-preview-fab,.mobile-preview-overlay{display:none!important}.app-shell{display:block;min-height:0}.print-sheet{display:block}.print-sheet pre{font-family:DFKai-SB,BiauKai,"Noto Serif TC",serif;font-size:13pt;line-height:2}.print-sheet.handwriting pre{font-size:14pt;line-height:3.2}}