:root{--cb-blue:#3577f6;--cb-blue2:#6aa9ff;--cb-ink:#18233b;--cb-muted:#73809a;--cb-line:#dfe7f3;--cb-soft:#f5f8fd;--cb-green:#21a77a}
*{box-sizing:border-box}.builder-page{background:radial-gradient(circle at 80% 0,#edf4ff 0,transparent 32%),linear-gradient(180deg,#f7faff,#f2f6fc);color:var(--cb-ink);min-height:100vh}.builder-page .ws-shell{background:rgba(255,255,255,.92)!important;border-bottom:1px solid #e5ebf4!important;box-shadow:0 8px 28px rgba(36,65,108,.05)!important;backdrop-filter:blur(18px)}.builder-page .ws-brand,.builder-page .ws-nav a{color:#27344c!important}.builder-page .ws-nav a.active{color:var(--cb-blue)!important;background:#edf4ff!important}.builder-page .ws-back{color:#526079!important;background:#fff!important;border-color:#d9e2ef!important}
.cb-stage{min-height:calc(100vh - 68px);display:grid;place-items:center;padding:42px 24px 70px}.cb-stage.enter{animation:cbIn .42s cubic-bezier(.2,.8,.2,1)}@keyframes cbIn{from{opacity:0;transform:translateY(14px) scale(.992)}to{opacity:1;transform:none}}
.cb-welcome{width:min(1180px,100%)}.cb-kicker{font-size:13px;font-weight:800;color:var(--cb-blue);letter-spacing:.12em;margin-bottom:14px}.cb-title{font-size:clamp(34px,4vw,54px);letter-spacing:-.05em;line-height:1.12;margin:0}.cb-sub{font-size:16px;color:var(--cb-muted);line-height:1.8;max-width:670px;margin:16px 0 34px}.cb-methods{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.cb-method{position:relative;text-align:left;border:1px solid var(--cb-line);background:rgba(255,255,255,.88);border-radius:24px;padding:26px;min-height:250px;cursor:pointer;transition:.25s ease;overflow:hidden}.cb-method:before{content:'';position:absolute;inset:auto -70px -100px auto;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,#dfebff,transparent 66%);transition:.3s}.cb-method:hover{transform:translateY(-6px);border-color:#aac8ff;box-shadow:0 24px 55px rgba(45,91,161,.13)}.cb-method:hover:before{transform:scale(1.2)}.cb-method-no{width:45px;height:45px;border-radius:15px;background:#edf4ff;color:var(--cb-blue);display:grid;place-items:center;font:800 15px Inter,sans-serif}.cb-method h2{font-size:21px;margin:40px 0 9px}.cb-method p{color:var(--cb-muted);line-height:1.7;font-size:14px;margin:0;max-width:280px}.cb-arrow{position:absolute;right:24px;top:25px;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;color:#8aa8db;background:#f5f8fd;transition:.2s}.cb-method:hover .cb-arrow{background:var(--cb-blue);color:#fff;transform:translateX(3px)}
.cb-shell{width:min(1400px,100%);margin:auto;display:grid;grid-template-columns:230px minmax(0,1fr) 300px;gap:20px;align-items:start}.cb-side,.cb-aside,.cb-panel{background:rgba(255,255,255,.92);border:1px solid var(--cb-line);box-shadow:0 18px 48px rgba(43,72,116,.07)}.cb-side{border-radius:22px;padding:18px;position:sticky;top:92px}.cb-side-head{padding:7px 8px 18px;border-bottom:1px solid #edf1f7;margin-bottom:10px}.cb-side-head b{font-size:15px}.cb-side-head span{display:block;font-size:12px;color:var(--cb-muted);margin-top:5px}.cb-step{display:flex;gap:11px;align-items:center;padding:12px 10px;border-radius:12px;color:#8290a7;font-size:13px;font-weight:650;transition:.2s}.cb-step i{font-style:normal;width:24px;height:24px;border-radius:8px;background:#f0f3f8;display:grid;place-items:center;font:700 11px Inter}.cb-step.on{background:#edf4ff;color:var(--cb-blue)}.cb-step.on i{background:var(--cb-blue);color:#fff}.cb-step.done{color:#44516a}.cb-step.done i{background:#e8f8f2;color:var(--cb-green)}
.cb-panel{border-radius:24px;padding:30px;min-height:680px}.cb-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;margin-bottom:28px}.cb-head h1{font-size:27px;letter-spacing:-.03em;margin:0 0 8px}.cb-head p{color:var(--cb-muted);font-size:14px;line-height:1.65;margin:0}.cb-save{font-size:12px;color:var(--cb-green);background:#eefaf6;border:1px solid #d5efe6;border-radius:999px;padding:8px 12px;white-space:nowrap}.cb-form{display:grid;gap:18px}.cb-grid2{display:grid;grid-template-columns:1fr 1fr;gap:15px}.cb-grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.cb-field{display:flex;flex-direction:column;gap:8px}.cb-field label{font-size:13px;font-weight:700;color:#46546c}.cb-field input,.cb-field select,.cb-field textarea{width:100%;border:1.5px solid var(--cb-line);background:#fbfcff;border-radius:13px;padding:12px 14px;font:14px inherit;color:var(--cb-ink);outline:0;transition:.18s}.cb-field textarea{min-height:110px;resize:vertical;line-height:1.7}.cb-field input:focus,.cb-field select:focus,.cb-field textarea:focus{border-color:var(--cb-blue);background:#fff;box-shadow:0 0 0 4px rgba(53,119,246,.1)}.cb-type-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.cb-type{border:2px solid var(--cb-line);border-radius:20px;padding:24px;cursor:pointer;transition:.22s;background:#fff}.cb-type:hover{border-color:#b8cff9;transform:translateY(-2px)}.cb-type.on{border-color:var(--cb-blue);background:linear-gradient(145deg,#f0f6ff,#fff);box-shadow:0 15px 34px rgba(53,119,246,.1)}.cb-type-mark{width:44px;height:44px;border-radius:14px;background:#edf4ff;color:var(--cb-blue);display:grid;place-items:center;font-weight:850}.cb-type h3{font-size:18px;margin:24px 0 8px}.cb-type p{font-size:13px;color:var(--cb-muted);line-height:1.65;margin:0}.cb-flow{display:flex;gap:8px;align-items:center;margin-top:18px;font-size:12px;color:#62708a}.cb-flow span{padding:6px 9px;border-radius:8px;background:#f2f5fa}.cb-flow b{color:#a8b3c4}
.cb-actions{display:flex;justify-content:space-between;align-items:center;margin-top:30px;padding-top:22px;border-top:1px solid #edf1f7}.cb-btn{border:0;border-radius:999px;padding:11px 22px;font:700 14px inherit;cursor:pointer;transition:.2s}.cb-btn.primary{background:linear-gradient(135deg,var(--cb-blue),#5b8fff);color:#fff;box-shadow:0 12px 25px rgba(53,119,246,.24)}.cb-btn.primary:hover{transform:translateY(-2px);box-shadow:0 16px 28px rgba(53,119,246,.3)}.cb-btn.ghost{background:#fff;border:1px solid var(--cb-line);color:#56647c}.cb-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.cb-aside{border-radius:22px;padding:18px;position:sticky;top:92px}.cb-aside-title{font-size:13px;font-weight:800;margin-bottom:13px}.cb-meter{height:7px;border-radius:99px;background:#eef2f8;overflow:hidden}.cb-meter i{display:block;height:100%;background:linear-gradient(90deg,var(--cb-blue),#73c4ff);width:0}.cb-space{display:flex;justify-content:space-between;font-size:12px;color:var(--cb-muted);margin-top:9px}.cb-tip{margin-top:16px;padding:13px;background:#f5f8fd;border-radius:13px;font-size:12px;line-height:1.65;color:#66748d}.cb-summary{margin-top:16px;border-top:1px solid #edf1f7;padding-top:16px}.cb-summary-row{display:flex;justify-content:space-between;gap:12px;font-size:12.5px;margin:10px 0;color:#75829a}.cb-summary-row b{color:#35425a;text-align:right}
.cb-chapter{border:1px solid var(--cb-line);border-radius:16px;margin-bottom:11px;background:#fff;overflow:hidden;transition:.2s}.cb-chapter:hover{border-color:#c4d6f5}.cb-chapter-head{display:grid;grid-template-columns:32px 1fr auto;gap:10px;align-items:center;padding:13px}.cb-chapter-head i{font-style:normal;width:30px;height:30px;border-radius:9px;background:#edf4ff;color:var(--cb-blue);display:grid;place-items:center;font:700 12px Inter}.cb-chapter-head input{border:0;background:transparent;font:700 14px inherit;outline:0;color:var(--cb-ink);width:100%}.cb-mini{border:0;background:#f4f7fb;color:#68758c;border-radius:9px;padding:7px 10px;cursor:pointer}.cb-resource-tools{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}.cb-resource{display:grid;grid-template-columns:42px 1fr auto;align-items:center;gap:12px;padding:12px;border:1px solid var(--cb-line);border-radius:14px;margin-bottom:9px;background:#fff}.cb-filemark{width:42px;height:42px;border-radius:12px;background:#edf4ff;color:var(--cb-blue);display:grid;place-items:center;font-size:11px;font-weight:850}.cb-resource b{display:block;font-size:13px}.cb-resource span{font-size:11.5px;color:var(--cb-muted)}
.cb-chapter-body{padding:0 13px 13px}.cb-chapter-assets{margin-top:14px;border:1px dashed #cbd9ed;background:#f8faff;border-radius:14px;padding:13px}.cb-asset-head{display:flex;justify-content:space-between;gap:14px;align-items:center;margin-bottom:10px}.cb-asset-head>div:last-child{display:flex;gap:7px;flex-wrap:wrap;justify-content:flex-end}.cb-asset-head b{display:block;font-size:13px}.cb-asset-head span{display:block;color:var(--cb-muted);font-size:11px;margin-top:3px}.cb-upload{color:var(--cb-blue);background:#eaf2ff}.cb-asset-empty{padding:18px;text-align:center;color:#8a96aa;font-size:12px;background:#fff;border-radius:10px}.cb-chapter-resource{display:grid;grid-template-columns:36px 1fr auto;gap:10px;align-items:center;background:#fff;border:1px solid #e3eaf4;border-radius:11px;padding:9px;margin-top:8px}.cb-chapter-resource .cb-filemark{width:36px;height:36px;border-radius:10px}.cb-chapter-resource b{display:block;font-size:12.5px}.cb-chapter-resource span{font-size:11px;color:var(--cb-muted)}
.cb-row-actions{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.cb-icon-btn{border:0;border-radius:8px;padding:6px 9px;background:#edf4ff;color:#3972d8;font:650 11px inherit;cursor:pointer;white-space:nowrap}.cb-icon-btn:hover{background:#dfeaff}.cb-icon-btn.danger,.cb-mini.danger{color:#a7656b;background:#fff2f3}.cb-tree{padding:4px 12px 14px 46px;position:relative}.cb-tree:before{content:'';position:absolute;left:27px;top:0;bottom:22px;border-left:1px dashed #cbd8ed}.cb-node{position:relative;border:1px solid #e3eaf5;border-radius:12px;margin:8px 0;background:#fbfcff}.cb-node:before{content:'';position:absolute;left:-20px;top:21px;width:19px;border-top:1px dashed #cbd8ed}.cb-node-line,.cb-child-line{display:grid;grid-template-columns:auto minmax(140px,1fr) auto auto;align-items:center;gap:9px;padding:9px 10px}.cb-node-line input,.cb-child-line input{border:0;background:transparent;outline:0;font:650 13px inherit;color:var(--cb-ink);min-width:0}.cb-node-no{font:750 11px Inter,sans-serif;color:var(--cb-blue);background:#e9f1ff;border-radius:7px;padding:5px 7px}.cb-node-no.child{color:#6b7b96;background:#eef2f7}.cb-count{font-size:10.5px;color:#8a96aa;white-space:nowrap}.cb-node-content{border-top:1px solid #edf1f7;padding:3px 8px 8px 24px}.cb-child-line{grid-template-columns:auto minmax(120px,1fr) auto auto;border-bottom:1px solid #f0f3f8;position:relative}.cb-child-line:before{content:'';position:absolute;left:5px;top:0;bottom:0;border-left:1px dashed #d6dfed}.cb-tree-add{border:0;background:transparent;color:#5d7fb8;font:650 12px inherit;cursor:pointer;padding:9px}.cb-tree-add.small{font-size:11px}.cb-tree-resource{display:grid;grid-template-columns:8px minmax(120px,1fr) auto auto;gap:8px;align-items:center;padding:7px 10px;color:#65728a;font-size:11px}.cb-tree-resource b{color:#3f4b61;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.cb-tree-resource button{border:0;background:transparent;color:#9a6570;cursor:pointer;font-size:11px}.cb-resource-dot{width:7px;height:7px;border-radius:50%;background:#69a3ff}

/* 青春智慧教育风·课程内容树 */
.cb-panel:has(#chapters){background:linear-gradient(180deg,rgba(255,255,255,.97),rgba(250,252,255,.96));overflow:visible}.cb-panel:has(#chapters) .cb-head h1:after{content:'✦';display:inline-block;margin-left:10px;color:#55a1ff;font-size:17px;animation:cbSpark 2.4s ease-in-out infinite}@keyframes cbSpark{50%{transform:translateY(-3px) rotate(12deg);opacity:.55}}.cb-save{position:relative;padding-right:30px}.cb-save:after{content:'';position:absolute;right:13px;top:50%;width:7px;height:7px;border-radius:50%;background:#54d6ac;transform:translateY(-50%);box-shadow:0 0 0 0 rgba(84,214,172,.4);animation:cbPulse 2s infinite}@keyframes cbPulse{70%{box-shadow:0 0 0 8px rgba(84,214,172,0)}}
.cb-chapter{overflow:visible;border-color:#dce6f5;border-radius:17px;margin-bottom:12px;box-shadow:0 7px 22px rgba(45,83,145,.045);background:#fff}.cb-chapter:hover{border-color:#bad1f5;box-shadow:0 12px 30px rgba(48,91,162,.075)}.cb-chapter-head{grid-template-columns:22px 18px 40px minmax(170px,1fr) auto auto;min-height:74px;padding:13px 18px;gap:10px}.cb-chapter-head i{width:40px;height:40px;border-radius:12px;font-size:14px}.cb-chapter-head input{font-size:16px;font-weight:760}.cb-chevron{width:22px;height:22px;border:0;background:transparent;cursor:pointer;position:relative}.cb-chevron:before{content:'';display:block;width:8px;height:8px;border-right:2px solid #337cf4;border-bottom:2px solid #337cf4;transform:rotate(45deg) translate(-1px,-1px);transition:.25s}.is-collapsed .cb-chevron:before{transform:rotate(-45deg)}.is-collapsed .cb-tree{display:none}.cb-drag{color:#a8b8d0;font-size:17px;line-height:1;cursor:grab}.cb-add-resource{display:inline-flex;align-items:center;gap:5px;padding:8px 10px;border-radius:10px;color:#2473f3;font:700 12px inherit;cursor:pointer;transition:.2s}.cb-add-resource span{font-size:17px;font-weight:400}.cb-add-resource:hover{background:#edf5ff;box-shadow:0 7px 18px rgba(53,119,246,.14);transform:translateY(-1px)}.cb-more{width:30px;height:30px;border:0;background:transparent;color:#657896;border-radius:8px;font-size:18px;cursor:pointer}.cb-more:hover{background:#eef4fc;color:#2f6fdc}.cb-row-actions{position:relative;flex-wrap:nowrap}
.cb-more-menu{display:none;position:absolute;right:0;top:38px;z-index:20;width:172px;padding:6px;background:#fff;border:1px solid #dfe7f3;border-radius:12px;box-shadow:0 15px 38px rgba(36,62,103,.16);animation:cbMenuIn .18s ease}.cb-more-menu.open{display:grid}.cb-more-menu button{border:0;background:transparent;text-align:left;padding:9px 10px;border-radius:8px;color:#45536a;font:600 12px inherit;cursor:pointer}.cb-more-menu button:hover{background:#f1f6fd}.cb-more-menu button.danger{color:#bf5d67}.cb-more-menu button.danger:hover{background:#fff1f2}@keyframes cbMenuIn{from{opacity:0;transform:translateY(-5px) scale(.98)}}
.cb-tree{padding:0 12px 12px 104px}.cb-tree:before{left:70px;top:0;border-left:1px solid #d5e2f5}.cb-node{border-color:#e1e9f5;border-radius:14px;margin:10px 0;background:#fff;overflow:visible;transition:.2s}.cb-node:before{left:-34px;width:33px;top:34px;border-color:#d5e2f5}.cb-node:hover{border-color:#bcd3f7}.cb-node-line{grid-template-columns:22px 18px auto minmax(130px,1fr) auto auto;min-height:64px;padding:10px 14px}.cb-node-line input{font-size:14px}.cb-node-no{padding:7px 10px;border-radius:10px;background:#edf4ff;color:#2473f3;font-size:12px}.cb-node-content{border-top:1px solid #edf2f8;padding:0 12px 10px 48px;position:relative}.cb-node-content:before{content:'';position:absolute;left:27px;top:0;bottom:24px;border-left:1px solid #d9e4f3}.cb-child-wrap{position:relative;border-bottom:1px solid #edf2f8;animation:cbChildIn .35s cubic-bezier(.2,.8,.2,1)}.cb-child-wrap:last-of-type{border-bottom:0}.cb-child-line{grid-template-columns:18px auto minmax(120px,1fr) auto auto;min-height:60px;padding:9px 10px;border:0}.cb-child-line:before{left:-21px;top:30px;width:21px;height:0;border-left:0;border-top:1px solid #d9e4f3}.cb-node-no.child{background:#f0f4f9;color:#60738f;padding:7px 9px}.cb-tree-add{display:flex;align-items:center;gap:7px;width:100%;border:1px dashed #d6e2f3;border-radius:10px;padding:9px 12px;margin-top:8px;color:#3478de;text-align:left}.cb-tree-add:hover{background:#f6faff;border-color:#9fc2f4}.cb-tree-add span{width:18px;height:18px;border:1px solid #79a9ed;border-radius:50%;display:grid;place-items:center}@keyframes cbChildIn{from{opacity:0;transform:translateY(8px);filter:blur(2px)}}
.cb-tree-resource{position:relative;grid-template-columns:34px minmax(140px,1fr) auto 30px;min-height:52px;margin:8px 0;padding:7px 11px;background:#fff;border:1px solid #e5ecf6;border-radius:11px;box-shadow:0 4px 14px rgba(35,70,126,.035);font-size:11.5px}.cb-tree-resource b{font-size:12.5px}.cb-file-icon{width:30px;height:30px;border-radius:8px;background:#eef3f9;color:#667892;display:grid;place-items:center;font-weight:800}.cb-file-icon.video{color:#fff;background:linear-gradient(145deg,#6ba9ff,#467df2)}.cb-file-icon.ppt{color:#fff;background:linear-gradient(145deg,#ff875e,#f05032)}
@media(max-width:760px){.cb-chapter-head{grid-template-columns:20px 34px 1fr auto}.cb-chapter-head>.cb-drag,.cb-chapter-head>.cb-count{display:none}.cb-tree{padding-left:32px}.cb-tree:before{left:18px}.cb-node-line{grid-template-columns:auto minmax(100px,1fr) auto}.cb-node-line>.cb-chevron,.cb-node-line>.cb-drag,.cb-node-line>.cb-count,.cb-child-line>.cb-drag,.cb-child-line>.cb-count{display:none}.cb-add-resource{font-size:0}.cb-add-resource span{font-size:18px}.cb-child-line{grid-template-columns:auto minmax(90px,1fr) auto}}

/* 终版·蓝紫品牌底色 + 统一字体栅格 */
.cb-panel:has(#chapters){font-family:"HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei",sans-serif;padding:30px;background:#fff}
.cb-panel:has(#chapters) .cb-head{position:relative;margin:-30px -30px 24px;padding:28px 30px 26px;min-height:124px;align-items:flex-start;border-radius:24px 24px 0 0;overflow:hidden;background:linear-gradient(118deg,#0f55da 0%,#244fe8 52%,#6850ef 100%);box-shadow:0 17px 36px rgba(44,77,201,.18)}
.cb-panel:has(#chapters) .cb-head:after{content:'';position:absolute;right:-70px;bottom:-95px;width:410px;height:210px;border-radius:50%;border:1px solid rgba(152,222,255,.28);box-shadow:0 0 55px rgba(69,200,255,.22);transform:rotate(-11deg)}
.cb-panel:has(#chapters) .cb-head>div,.cb-panel:has(#chapters) .cb-save{position:relative;z-index:1}.cb-panel:has(#chapters) .cb-head h1{margin:0 0 8px;color:#fff;font-size:30px;line-height:40px;font-weight:700;letter-spacing:-.035em}.cb-panel:has(#chapters) .cb-head h1:after{display:none}.cb-panel:has(#chapters) .cb-head p{color:rgba(255,255,255,.87);font-size:13px;line-height:20px;font-weight:400}.cb-panel:has(#chapters) .cb-save{color:#168d69;background:rgba(244,255,251,.96);border-color:rgba(165,232,211,.8);font-size:13px;line-height:20px;font-weight:500;padding:9px 30px 9px 14px}
.cb-panel:has(#chapters) .cb-chapter{border:0;border-radius:16px;background:#fff;box-shadow:none;margin-bottom:14px}.cb-panel:has(#chapters) .cb-chapter-head{position:relative;min-height:72px;padding:12px 18px;grid-template-columns:22px 18px 44px minmax(160px,1fr) 78px auto;border-radius:14px;background:linear-gradient(112deg,#1459ea 0%,#2355ed 56%,#6850ee 100%);box-shadow:0 10px 25px rgba(42,80,215,.16);overflow:visible}.cb-panel:has(#chapters) .cb-chapter-head:after{content:'';position:absolute;inset:0;border-radius:14px;background:linear-gradient(100deg,transparent 28%,rgba(108,221,255,.23) 48%,transparent 68%);transform:translateX(-100%);animation:cbBrandSheen 8s ease-in-out infinite;pointer-events:none}@keyframes cbBrandSheen{0%,55%{transform:translateX(-100%)}78%,100%{transform:translateX(100%)}}
.cb-panel:has(#chapters) .cb-chapter-head i{width:44px;height:44px;border-radius:11px;color:#fff;background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.16);font:700 15px/44px "HarmonyOS Sans SC","MiSans","PingFang SC",sans-serif}.cb-panel:has(#chapters) .cb-chapter-head input{color:#fff;font-size:18px;line-height:28px;font-weight:650;letter-spacing:-.01em}.cb-panel:has(#chapters) .cb-chapter-head input::placeholder{color:rgba(255,255,255,.62)}.cb-panel:has(#chapters) .cb-chapter-head .cb-count{color:rgba(255,255,255,.86);font-size:13px;line-height:20px;font-weight:400}.cb-panel:has(#chapters) .cb-chapter-head .cb-drag{color:rgba(255,255,255,.67)}.cb-panel:has(#chapters) .cb-chapter-head .cb-chevron:before{border-color:#fff}.cb-panel:has(#chapters) .cb-chapter-head .cb-more{color:#fff}.cb-head-action{height:36px;padding:0 14px;border-radius:9px;border:1px solid rgba(255,255,255,.26);background:rgba(255,255,255,.09);color:#fff;font:500 13px/20px "HarmonyOS Sans SC","MiSans","PingFang SC",sans-serif;cursor:pointer;transition:.2s}.cb-head-action:hover{background:rgba(255,255,255,.18);transform:translateY(-1px)}
.cb-panel:has(#chapters) .cb-tree{padding:12px 0 0 92px}.cb-panel:has(#chapters) .cb-tree:before{left:48px;border-color:#c7d7f5}.cb-panel:has(#chapters) .cb-node{margin:0 0 12px;border:1px solid #dce5f5;border-radius:14px;background:#fff;box-shadow:0 6px 18px rgba(39,70,130,.045)}.cb-panel:has(#chapters) .cb-node:before{left:-45px;width:44px;border-color:#c7d7f5}.cb-panel:has(#chapters) .cb-node-line{min-height:64px;padding:10px 14px;grid-template-columns:22px 18px auto minmax(120px,1fr) 78px auto;background:linear-gradient(100deg,#f3f6ff,#f0f1ff);border-radius:13px 13px 0 0}.cb-panel:has(#chapters) .cb-node-line input{font-size:15px;line-height:24px;font-weight:550;color:#132247}.cb-panel:has(#chapters) .cb-node-no{font:600 13px/20px "HarmonyOS Sans SC","MiSans","PingFang SC",sans-serif;color:#175ce7;background:#e8efff;padding:7px 10px}.cb-panel:has(#chapters) .cb-node-line .cb-count,.cb-panel:has(#chapters) .cb-child-line .cb-count{font-size:13px;line-height:20px;font-weight:400;color:#74829d}.cb-section-action{height:36px;padding:0 13px;border-radius:9px;border:1px solid #b9ccef;background:rgba(255,255,255,.72);color:#315fbd;font:500 13px/20px "HarmonyOS Sans SC","MiSans","PingFang SC",sans-serif;cursor:pointer;transition:.2s}.cb-section-action:hover{background:#fff;border-color:#7ea5ec;box-shadow:0 6px 16px rgba(48,92,181,.11)}
.cb-panel:has(#chapters) .cb-node-content{padding:0 12px 12px 48px}.cb-panel:has(#chapters) .cb-child-wrap:first-of-type{margin:0 -12px;border-left:5px solid #2466f2;background:linear-gradient(90deg,#eef4ff,#f9fbff);box-shadow:inset 0 0 0 1px #a9c4ff,0 8px 22px rgba(46,94,205,.08)}.cb-panel:has(#chapters) .cb-child-line{min-height:60px;padding:10px 14px;grid-template-columns:18px auto minmax(110px,1fr) 78px auto}.cb-panel:has(#chapters) .cb-child-line input{font-size:15px;line-height:24px;font-weight:550;color:#172446}.cb-panel:has(#chapters) .cb-node-no.child{font:600 13px/20px "HarmonyOS Sans SC","MiSans","PingFang SC",sans-serif;color:#31598f;background:#edf2f9}.cb-panel:has(#chapters) .cb-add-resource{height:36px;padding:0 14px;border-radius:9px;color:#fff;background:linear-gradient(135deg,#1762ed,#314fe4);font-size:13px;line-height:20px;font-weight:500;box-shadow:0 8px 18px rgba(38,89,222,.2)}.cb-panel:has(#chapters) .cb-add-resource:hover{background:linear-gradient(135deg,#0f55dd,#2945d4);box-shadow:0 10px 23px rgba(38,89,222,.27)}
.cb-panel:has(#chapters) .cb-tree-resource{min-height:56px;margin:8px 0;padding:8px 13px;grid-template-columns:36px minmax(130px,1fr) 88px 30px;border-color:#e1e8f3;border-radius:10px;font-size:13px;line-height:20px}.cb-panel:has(#chapters) .cb-tree-resource b{font-size:13px;line-height:20px;font-weight:500;color:#182646}.cb-panel:has(#chapters) .cb-tree-resource>span:nth-of-type(2){font-size:13px;color:#71809b;font-variant-numeric:tabular-nums}.cb-panel:has(#chapters) .cb-file-icon{width:34px;height:34px}.cb-panel:has(#chapters) .cb-tree-add{min-height:44px;margin-top:10px;padding:10px 14px;border-color:#bfcff0;color:#2862ca;font-size:13px;line-height:20px;font-weight:500}.cb-panel:has(#chapters)>.cb-btn.ghost{height:44px;margin-top:2px;border-radius:12px;padding:0 20px;font-size:13px;line-height:20px;font-weight:500}
.cb-panel:has(#chapters) .cb-actions{margin-top:28px;padding-top:22px}.cb-panel:has(#chapters) .cb-actions .cb-btn{height:44px;border-radius:11px;padding:0 24px;font-size:13px;line-height:20px;font-weight:600}.cb-panel:has(#chapters) .cb-actions .cb-btn.primary{background:linear-gradient(135deg,#1462ef,#3852ec);box-shadow:0 10px 24px rgba(33,84,225,.24)}
@media(max-width:760px){.cb-panel:has(#chapters) .cb-head{margin:-20px -20px 20px;padding:22px 20px}.cb-panel:has(#chapters) .cb-head h1{font-size:25px;line-height:34px}.cb-panel:has(#chapters) .cb-chapter-head{grid-template-columns:20px 40px 1fr auto}.cb-panel:has(#chapters) .cb-chapter-head>.cb-drag,.cb-panel:has(#chapters) .cb-chapter-head>.cb-count,.cb-head-action{display:none}.cb-panel:has(#chapters) .cb-tree{padding-left:28px}.cb-panel:has(#chapters) .cb-tree:before{left:14px}.cb-panel:has(#chapters) .cb-node-line{grid-template-columns:auto minmax(90px,1fr) auto}.cb-section-action{font-size:0;width:36px;padding:0}.cb-section-action:before{content:'+';font-size:18px}}
.cb-modal-back{position:fixed;inset:0;background:rgba(23,34,57,.38);backdrop-filter:blur(8px);display:grid;place-items:center;padding:24px;z-index:100;animation:fade .2s}.cb-modal{width:min(820px,100%);max-height:82vh;overflow:auto;background:#fff;border-radius:26px;box-shadow:0 30px 90px rgba(20,37,66,.26);padding:26px;animation:modalIn .3s cubic-bezier(.2,.8,.2,1)}@keyframes fade{from{opacity:0}}@keyframes modalIn{from{opacity:0;transform:translateY(18px) scale(.97)}}.cb-modal-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:20px}.cb-modal-head h2{font-size:23px;margin:0 0 7px}.cb-modal-head p{font-size:13px;color:var(--cb-muted);margin:0}.cb-close{width:36px;height:36px;border-radius:50%;border:1px solid var(--cb-line);background:#fff;cursor:pointer;font-size:18px;color:#6d7990}.cb-course-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}.cb-course-card{border:1.5px solid var(--cb-line);border-radius:16px;padding:15px;cursor:pointer;transition:.2s}.cb-course-card:hover{border-color:#afc9f7;transform:translateY(-2px)}.cb-course-card.on{border-color:var(--cb-blue);background:#f2f7ff}.cb-course-card h3{font-size:14px;margin:0 0 8px}.cb-course-card p{font-size:12px;color:var(--cb-muted);margin:0}.cb-empty{text-align:center;padding:62px 20px;color:var(--cb-muted)}.cb-empty b{display:block;color:#3a465d;font-size:17px;margin-bottom:8px}.cb-modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}
.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);background:#17233c;color:#fff;padding:11px 18px;border-radius:999px;font-size:13px;opacity:0;pointer-events:none;transition:.25s;z-index:200}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:1100px){.cb-shell{grid-template-columns:190px 1fr}.cb-aside{display:none}}@media(max-width:760px){.cb-stage{padding:22px 14px 50px;display:block}.cb-methods,.cb-type-grid,.cb-grid2,.cb-grid3,.cb-course-list{grid-template-columns:1fr}.cb-method{min-height:190px}.cb-shell{display:block}.cb-side{position:static;margin-bottom:14px;display:flex;overflow:auto}.cb-side-head{display:none}.cb-step{white-space:nowrap}.cb-panel{padding:20px;min-height:0}.cb-head,.cb-asset-head{flex-direction:column;align-items:stretch}.cb-asset-head>div:last-child{justify-content:flex-start}.ws-nav{display:none}}
.cb-panel:has(#chapters) .cb-section-action{padding:0 10px;font-size:12px;white-space:nowrap}

/* 全流程统一品牌标题与审计优化 */
.cb-step{width:100%;border:0;background:transparent;text-align:left;font-family:inherit;cursor:default}.cb-step.done{cursor:pointer}.cb-step.done:hover{background:#f0f5ff;color:#2865d5}.cb-step:disabled{opacity:1}
.cb-panel .cb-head{position:relative;margin:-30px -30px 26px;padding:28px 30px 26px;min-height:124px;align-items:flex-start;border-radius:24px 24px 0 0;overflow:hidden;background:linear-gradient(118deg,#175ada 0%,#3157e9 56%,#6b52ed 100%);box-shadow:0 16px 34px rgba(44,77,201,.16)}.cb-panel .cb-head:after{content:'';position:absolute;right:-60px;bottom:-100px;width:400px;height:210px;border-radius:50%;border:1px solid rgba(155,220,255,.26);box-shadow:0 0 50px rgba(74,198,255,.17);transform:rotate(-11deg)}.cb-panel .cb-head>div,.cb-panel .cb-save{position:relative;z-index:1}.cb-panel .cb-head h1{margin:0 0 8px;color:#fff;font-size:30px;line-height:40px;font-weight:700;letter-spacing:-.035em}.cb-panel .cb-head p{color:rgba(255,255,255,.86);font-size:13px;line-height:20px;font-weight:400}.cb-panel .cb-head .cb-save{color:#168d69;background:rgba(244,255,251,.96);border-color:rgba(165,232,211,.8);font-size:13px;line-height:20px;font-weight:500;padding:9px 30px 9px 14px}
.cb-field.has-error input,.cb-field.has-error select,.cb-field.has-error textarea{border-color:#e45c69;background:#fffafb;box-shadow:0 0 0 3px rgba(228,92,105,.09)}.cb-field-error{font-size:12px;line-height:18px;color:#cc4050}.cb-field-help{font-size:12px;line-height:18px;color:#8995aa;margin-top:-2px}
.cb-general-resources{margin:0 0 18px;border:1px solid #dce6f5;border-radius:14px;background:#f8faff;overflow:hidden}.cb-general-resources summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 16px;cursor:pointer}.cb-general-resources summary::-webkit-details-marker{display:none}.cb-general-resources summary>div{display:grid;gap:3px}.cb-general-resources summary b{font-size:14px;color:#26344f}.cb-general-resources summary span{font-size:12px;color:#7d8aa1}.cb-general-resources summary em{font-style:normal;font-size:12px;color:#3471d6;background:#edf4ff;border-radius:999px;padding:5px 9px}.cb-general-body{padding:15px 16px;border-top:1px solid #e2e9f4;background:#fff}.cb-general-body .cb-resource-tools{margin-bottom:12px}.cb-general-body p{margin:10px 0;color:#8793a8;font-size:12px}
.cb-review{display:grid;gap:14px}.cb-review-card{border:1px solid #dfe7f3;border-radius:15px;background:#fff;overflow:hidden;box-shadow:0 7px 20px rgba(43,72,116,.04)}.cb-review-card>header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;background:#f4f7ff;border-bottom:1px solid #e4eaf5}.cb-review-card h2{font-size:15px;margin:0;color:#273651}.cb-review-card header button{border:0;background:transparent;color:#2f6fdc;font:600 12px inherit;cursor:pointer}.cb-review-card>div{padding:4px 16px 12px}.cb-review-copy{padding:12px 4px;border-bottom:1px solid #edf1f7}.cb-review-copy span{font-size:12px;color:#8490a5}.cb-review-copy p{margin:6px 0 0;color:#344158;font-size:13px;line-height:1.7}.cb-review-tree>div{padding:12px 4px;border-bottom:1px solid #edf1f7}.cb-review-tree b{font-size:13px;color:#2e3b54}.cb-review-tree span{float:right;font-size:12px;color:#7b889e}.cb-review-tree p{margin:7px 0 0;font-size:12px;color:#69778e;line-height:1.6}
@media(max-width:760px){.cb-panel .cb-head{margin:-20px -20px 20px;padding:22px 20px;min-height:0}.cb-panel .cb-head h1{font-size:25px;line-height:34px}.cb-general-resources summary span{display:none}.cb-review-tree span{float:none;display:block;margin-top:4px}}

/* 可拖拽也可键盘排序 */
.cb-drag{display:inline-flex!important;align-items:center;justify-content:center;gap:4px;width:52px;height:34px;border-radius:9px;cursor:grab;user-select:none;transition:background .18s,transform .18s,box-shadow .18s}.cb-drag b{font:700 16px/1 sans-serif}.cb-drag em{font:600 10px/1 "PingFang SC",sans-serif;font-style:normal;white-space:nowrap}.cb-drag:hover,.cb-drag:focus-visible{background:rgba(255,255,255,.18);box-shadow:0 5px 14px rgba(12,38,112,.18);outline:2px solid rgba(130,198,255,.65);outline-offset:2px;transform:translateY(-1px)}.cb-drag:active{cursor:grabbing;transform:scale(.95)}.cb-node-line .cb-drag,.cb-child-line .cb-drag{color:#52709f;background:#edf3fc}.cb-node-line .cb-drag:hover,.cb-node-line .cb-drag:focus-visible,.cb-child-line .cb-drag:hover,.cb-child-line .cb-drag:focus-visible{background:#dce9fc;color:#245fbd}.is-dragging{opacity:.42;transform:scale(.985);filter:saturate(.7);box-shadow:0 18px 38px rgba(33,74,157,.18)!important}.is-drop-target{position:relative;transform:translateY(3px);box-shadow:0 -4px 0 #55a6ff,0 12px 28px rgba(38,91,200,.13)!important;transition:transform .18s,box-shadow .18s}.is-drop-target:before{content:'放到这里';position:absolute;left:12px;top:-25px;z-index:30;padding:4px 8px;border-radius:6px;background:#1764e8;color:#fff;font:600 10px/1.2 "PingFang SC",sans-serif;box-shadow:0 5px 12px rgba(23,100,232,.25);animation:cbDropHint .18s ease-out}@keyframes cbDropHint{from{opacity:0;transform:translateY(5px)}}::view-transition-old(root){animation:cbSortOld .18s ease-in both}::view-transition-new(root){animation:cbSortNew .28s cubic-bezier(.2,.8,.2,1) both}@keyframes cbSortOld{to{opacity:.75}}@keyframes cbSortNew{from{opacity:.75;transform:translateY(8px)}}.cb-panel:has(#chapters) .cb-chapter-head{grid-template-columns:22px 52px 44px minmax(160px,1fr) 78px auto}.cb-panel:has(#chapters) .cb-node-line{grid-template-columns:22px 52px auto minmax(120px,1fr) 78px auto}.cb-panel:has(#chapters) .cb-child-line{grid-template-columns:52px auto minmax(110px,1fr) 78px auto}
.cb-type{font-family:inherit;text-align:left}.cb-type:focus-visible,.cb-step.done:focus-visible{outline:3px solid rgba(58,116,238,.3);outline-offset:3px}

/* 建课侧边资源空间管理 */
.cb-aside-title-row{display:flex;align-items:center;justify-content:space-between}.cb-aside-title-row button{border:0;background:#edf4ff;color:#2765cb;border-radius:8px;padding:6px 9px;font:600 11px inherit;cursor:pointer}.cb-storage-stats{display:flex;gap:8px;margin:12px 0 0}.cb-storage-stats span{padding:5px 8px;border-radius:999px;background:#f2f5fa;color:#70809a;font-size:11px}.cb-manage-storage{width:100%;display:flex;align-items:center;justify-content:space-between;margin-top:12px;padding:11px 12px;border:1px solid #d3e0f4;border-radius:11px;background:linear-gradient(135deg,#f7faff,#eff4ff);color:#285db8;font:600 12px inherit;cursor:pointer;transition:.2s}.cb-manage-storage:hover{border-color:#9dbcec;transform:translateY(-1px);box-shadow:0 8px 18px rgba(47,91,174,.1)}
.cb-disk-alert{margin-top:10px;padding:9px 10px;border-radius:9px;background:#fff8e8;color:#9b6a13;font-size:11px;line-height:1.5}.cb-disk-alert.critical{background:#fff0f1;color:#b64150}
.cb-storage-modal{width:min(980px,100%);padding:0;overflow:hidden}.cb-storage-modal>.cb-modal-head{padding:24px 26px 18px;margin:0;border-bottom:1px solid #e6ebf4}.cb-storage-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 26px;background:#f8faff;border-bottom:1px solid #e6ebf4}.cb-storage-toolbar form{display:flex;gap:8px}.cb-storage-toolbar input{width:240px;height:40px;padding:0 12px;border:1px solid #ced9ea;border-radius:10px;font:13px inherit}.cb-storage-toolbar .cb-btn{height:40px}.cb-storage-toolbar>span{color:#75839a;font-size:12px}.cb-storage-layout{display:grid;grid-template-columns:210px 1fr;min-height:420px;max-height:58vh}.cb-folder-list{padding:14px;background:#f7f9fd;border-right:1px solid #e3e9f3;overflow:auto}.cb-folder-list button{width:100%;display:flex;align-items:center;justify-content:space-between;border:0;border-radius:10px;background:transparent;padding:11px 12px;color:#53627b;font:12px inherit;cursor:pointer}.cb-folder-list button b{max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.cb-folder-list button.on{background:#eaf1ff;color:#225cc6}.cb-folder-list button span{min-width:22px;padding:3px 6px;border-radius:999px;background:#fff;color:#8190a8;font-size:10px}.cb-storage-files{padding:18px 20px;overflow:auto}.cb-storage-files>header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.cb-storage-files>header>b{font-size:14px;color:#2b3953}.danger-link{border:0;background:transparent;color:#bd5662;font:600 11px inherit;cursor:pointer}.cb-storage-file{display:grid;grid-template-columns:38px minmax(180px,1fr) 150px 54px;align-items:center;gap:11px;padding:11px 8px;border-bottom:1px solid #edf1f6}.cb-storage-file>div{display:grid;gap:3px;min-width:0}.cb-storage-file>div b{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px;color:#2f3d56}.cb-storage-file small{color:#7d8a9f;font-size:11px}.cb-storage-file select{height:34px;border:1px solid #d5deeb;border-radius:9px;background:#fff;color:#596981;font:11px inherit;padding:0 8px}.cb-storage-file .cb-mini.danger{color:#bb4f5d}.cb-storage-file .cb-mini:disabled{opacity:.38;cursor:not-allowed}.cb-storage-empty{display:grid;place-items:center;text-align:center;gap:7px;padding:100px 20px;color:#8693a8}.cb-storage-empty b{color:#43506a;font-size:15px}.cb-storage-empty span{font-size:12px}
@media(max-width:760px){.cb-storage-toolbar{align-items:stretch;flex-direction:column}.cb-storage-toolbar form{display:grid;grid-template-columns:1fr auto}.cb-storage-toolbar input{width:100%}.cb-storage-layout{grid-template-columns:1fr;max-height:65vh}.cb-folder-list{display:flex;gap:6px;border-right:0;border-bottom:1px solid #e3e9f3;overflow:auto}.cb-folder-list button{width:auto;min-width:max-content}.cb-storage-file{grid-template-columns:38px 1fr auto}.cb-storage-file select{grid-column:2/4;width:100%}}