:root{--primary: #4f46e5;--text: #1f2430;--muted: #7a8294;--line: #e4e7ee;--bg: #f5f6fa;--card: #ffffff}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,Segoe UI,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);font-size:14px}button{font:inherit;cursor:pointer}.app{max-width:1080px;margin:0 auto;min-height:100vh;background:var(--bg)}.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;padding:10px 16px;background:#ffffffeb;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.brand{font-weight:700;font-size:16px;color:var(--primary);text-decoration:none}.topbar nav a{margin-left:16px;color:var(--muted);text-decoration:none}.topbar nav a.active{color:var(--primary);font-weight:600}.content{padding:14px 16px 40px}.loading{text-align:center;color:var(--muted);padding:60px 0}.week-bar{display:flex;align-items:center;gap:10px;margin-top:10px}.week-bar button{border:1px solid var(--line);background:var(--card);border-radius:8px;width:36px;height:36px;font-size:18px}.week-bar .ghost{width:auto;padding:0 12px;font-size:13px}.week-info{flex:1;display:flex;flex-direction:column;line-height:1.3}.week-info span{color:var(--muted);font-size:12px}.grid-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:10px;background:var(--card)}.grid{position:relative;display:grid;min-width:620px;grid-template-columns:46px repeat(5,1fr);grid-template-rows:42px repeat(12,56px)}.grid-corner{grid-column:1;grid-row:1;position:sticky;left:0;z-index:5;background:var(--card);border-bottom:1px solid var(--line)}.day-head{display:flex;flex-direction:column;align-items:center;justify-content:center;border-left:1px solid var(--line);border-bottom:1px solid var(--line);line-height:1.4}.day-head span{color:var(--muted);font-size:11px}.day-head.today strong{color:var(--primary)}.period{display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--muted);font-size:12px;position:sticky;left:0;z-index:4;background:var(--card);border-bottom:1px solid var(--line)}.period-time{font-size:9px}.cell{border-left:1px solid var(--line);border-bottom:1px solid var(--line)}.cell.today-col{background:#eef0ff}.cell.night{background:#faf7f0}.slot-wrap{padding:2px;min-width:0}.course-card{width:100%;height:100%;border:0;border-radius:7px;color:#fff;padding:4px 6px;display:flex;flex-direction:column;align-items:flex-start;gap:2px;text-align:left;overflow:hidden;line-height:1.25}.card-name{font-size:12px;font-weight:600;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.card-room{font-size:10px;opacity:.9;margin-top:auto}.hint{color:var(--muted);font-size:12px}.warn{color:#c2410c;font-style:normal}.back{border:0;background:none;color:var(--primary);padding:0;margin-bottom:10px}.course-head{border-top:4px solid var(--primary);padding-top:10px}.course-head h2,.detail h2{margin:0 0 4px}.course-head p{color:var(--muted);margin:0 0 16px}.detail section{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin-bottom:14px}.section-head{display:flex;justify-content:space-between;align-items:center}h3{margin:0 0 10px;font-size:15px}.slot-list,.note-list{list-style:none;margin:0;padding:0}.slot-list li{padding:7px 0;border-bottom:1px dashed var(--line);line-height:1.5}.note-list li{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}.note-list a{color:var(--text);text-decoration:none}.note-list time{color:var(--muted);font-size:12px;flex-shrink:0}.btn{border:1px solid var(--line);background:var(--card);border-radius:8px;padding:7px 14px;margin-right:8px}.btn.primary{background:var(--primary);color:#fff;border-color:var(--primary);text-decoration:none;font-size:13px;padding:6px 12px}.editor-bar{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.save-state.ok{color:#16a34a;font-size:12px}.save-state.pending{color:var(--muted);font-size:12px}.note-title{width:100%;border:1px solid var(--line);border-radius:8px;padding:10px 12px;font-size:16px;font-weight:600;margin-bottom:10px}.note-split{display:grid;grid-template-columns:1fr 1fr;gap:10px;min-height:60vh}.note-input,.note-preview{border:1px solid var(--line);border-radius:10px;background:var(--card);padding:12px}.note-input{resize:vertical;min-height:50vh;font:inherit;line-height:1.7}.note-preview{overflow-y:auto;line-height:1.7}.note-preview h1,.note-preview h2{font-size:16px}.note-preview code{background:#f0f1f5;padding:1px 5px;border-radius:4px}.note-preview pre{background:#1f2430;color:#e6e8ef;padding:10px;border-radius:8px;overflow-x:auto}.settings label{display:block;margin-bottom:12px;color:var(--muted)}.settings input{display:block;width:100%;max-width:320px;margin-top:6px;padding:8px 10px;border:1px solid var(--line);border-radius:8px;font:inherit}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:#1f2430;color:#fff;padding:8px 18px;border-radius:20px}@media(max-width:640px){.content{padding:10px 8px 24px}.week-bar button{width:32px;height:32px;font-size:16px}.week-info strong{font-size:14px}.grid{min-width:0;grid-template-columns:26px repeat(5,1fr);grid-template-rows:30px repeat(12,44px)}.period{font-size:11px}.period-time{display:none}.day-head strong{font-size:12px}.day-head span{font-size:9px}.slot-wrap{padding:1px}.course-card{padding:3px 4px;border-radius:5px;gap:1px}.card-name{font-size:10px;line-height:1.2;-webkit-line-clamp:3}.card-room{font-size:8px}.hint{font-size:10px;margin:6px 0 0}.note-split{grid-template-columns:1fr}.note-preview{min-height:30vh}}