:root{--pink:#c93656;--ink:#232431;--muted:#686b79;--line:#ededf1;--bg:#f7f8fa;--green:#187860;--soft:#fff0f3}
*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);font-size:14px;line-height:1.55}
button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0}button:disabled{cursor:not-allowed;opacity:.5}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible{outline:3px solid #f9b3c0;outline-offset:3px}input,select,textarea{max-width:100%;border:1px solid #dfe0e6;background:#fff;border-radius:12px;padding:12px;color:var(--ink)}input:focus,select:focus,textarea:focus{outline:2px solid #f9b3c0}textarea{resize:vertical;min-height:90px;width:100%}h1,h2,h3,p{margin:0}h1{font-size:32px;letter-spacing:-1px;line-height:1.3}h2{font-size:20px}h3{font-size:16px}small{font-size:12px}.muted{color:var(--muted)}.pink{color:var(--pink)}.green{color:var(--green)}.row{display:flex;align-items:center;gap:12px}.spread{justify-content:space-between}.wrap{flex-wrap:wrap}.grow{flex:1;min-width:0}.mt{margin-top:20px}.small{font-size:12px}.badge{font-size:11px;background:var(--soft);color:var(--pink);padding:4px 9px;border-radius:20px;display:inline-block}
.sidebar{width:236px;position:fixed;inset:0 auto 0 0;background:white;border-right:1px solid var(--line);padding:34px 24px;display:flex;flex-direction:column;z-index:10}
.brand{display:flex;align-items:center;gap:12px;font-size:24px;font-weight:800}.brand img,.mobile-brand img{width:46px;height:46px;border-radius:14px}.brand small{display:block;font-size:10px;letter-spacing:1px;color:var(--muted);font-weight:400;margin-top:3px}.sidebar nav{display:grid;gap:10px;margin-top:46px}.sidebar nav button{display:flex;align-items:center;gap:14px;padding:14px 18px;border-radius:14px;text-align:left;background:white;color:#777986;font-weight:600}.sidebar nav button span{font-size:22px;font-weight:400}.sidebar nav button.active{background:var(--soft);color:var(--pink)}.side-note{margin-top:auto;padding:18px 0;color:#737581;font-size:12px}.side-note b{color:#414350}.side-note p{line-height:1.9;margin:12px 0}.side-note small{font-size:10px;color:#a0a1ab}
.workspace{margin-left:236px}.topbar{height:84px;background:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 42px;border-bottom:1px solid var(--line)}.breadcrumb{font-size:12px;color:var(--muted)}.breadcrumb span{margin:0 16px;color:#d0d1da}.breadcrumb b{color:#525360;font-weight:500}.account{background:#fff5f7;color:var(--pink);border:1px solid #ffdce4;border-radius:22px;padding:9px 16px;font-weight:600;max-width:210px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.mobile-brand{display:none}main{max-width:1400px;margin:auto;padding:36px 42px 50px;min-height:calc(100dvh - 142px)}footer{text-align:center;padding:20px;color:#9596a1;font-size:11px}.mobile-nav{display:none}
.title-row{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:28px}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:700;color:var(--pink);margin-bottom:8px}.subtitle{color:var(--muted);margin-top:8px;font-size:13px}.btn{display:inline-flex;justify-content:center;align-items:center;gap:8px;min-height:44px;padding:11px 18px;border-radius:12px;background:#f0f1f5;color:#535563;font-weight:600}.btn.primary{background:var(--pink);color:white;box-shadow:0 4px 12px #f2486825}.btn.secondary{background:var(--soft);color:var(--pink)}.btn.outline{background:#fff;border:1px solid #e4e5eb}.btn.helper{background:#ebf8f3;color:var(--green)}.btn.small{padding:8px 12px;min-height:40px;font-size:12px}
.hero{background:#ffeef1;border-radius:24px;display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;padding:32px;margin-bottom:30px;position:relative;overflow:hidden}.hero h2{font-size:24px;line-height:1.5}.hero p{font-size:12px;color:#986b77;margin:10px 0 18px}.hero-art{position:relative;width:140px;height:140px;display:grid;place-items:center}.hero-art img{width:118px;border-radius:30px;transform:rotate(-10deg);box-shadow:10px 12px 0 #ffcad5}.hero .pill{position:absolute;bottom:0;right:-12px;background:white;padding:9px 14px;border-radius:14px;font-size:11px;color:#be4f69;box-shadow:0 4px 18px #bc5c7120}.filters{display:flex;gap:12px;align-items:center;justify-content:space-between;margin-bottom:22px}.search{min-width:0;width:320px;max-width:100%;background:white;border:1px solid var(--line);padding:12px 16px}.section-heading{margin-bottom:18px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.course-card{background:white;border-radius:20px;overflow:hidden;border:1px solid var(--line);text-align:left;padding:0;width:100%;transition:transform .18s,box-shadow .18s}.course-card:hover{transform:translateY(-3px);box-shadow:0 10px 24px #2324310c}.cover{height:155px;padding:24px;display:flex;flex-direction:column;justify-content:space-between;background:var(--cover,#ecf1ff);position:relative}.cover:after{content:"";position:absolute;width:160px;height:160px;border:24px solid #ffffff40;border-radius:50%;right:-80px;top:-60px;pointer-events:none}.course-code{font-size:11px;font-weight:800;letter-spacing:2px;position:relative;z-index:1}.cover h3{font-size:19px;line-height:1.35;overflow-wrap:anywhere;position:relative;z-index:1}.card-bottom{padding:18px 20px}.dept{font-size:11px;color:var(--muted);min-height:34px;margin-bottom:14px}.counts{display:flex;gap:20px;font-size:11px}.counts b{font-size:20px;margin-right:4px}.card-bottom .badge{margin-top:12px}.add-card{background:white;border:1px dashed #f5aabd;border-radius:18px;padding:22px;display:flex;align-items:center;gap:14px;width:100%;text-align:left;margin-top:24px}.add-card .plus{font-size:28px;background:var(--soft);color:var(--pink);width:44px;height:44px;border-radius:14px;display:grid;place-items:center}
.panel{background:white;border:1px solid var(--line);border-radius:20px;padding:24px;margin-bottom:20px}.empty{padding:44px 20px;color:var(--muted);text-align:center}.detail-head{padding:26px;border-radius:22px;background:var(--soft);margin-bottom:24px}.detail-head h1{font-size:28px;margin:10px 0}.date-tabs{display:flex;gap:10px;overflow-x:auto;padding:0 0 14px;scrollbar-width:thin}.date-tab{background:white;border:1px solid var(--line);border-radius:14px;padding:12px 14px;min-width:83px;white-space:nowrap}.date-tab.selected{background:var(--pink);color:white;border-color:var(--pink)}.slot-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;margin:8px 0 24px}.slot{border:1px solid var(--line);background:white;padding:16px 12px;border-radius:16px;text-align:left}.slot strong{display:block;font-size:23px}.slot small{display:block;margin-bottom:10px;color:var(--muted)}.slot .green,.slot .pink{font-size:11px;display:block;line-height:1.8}.slot.selected{border:2px solid var(--pink);padding:15px 11px;background:#fff6f8}.slot:disabled{background:#f0f0f3}.detail-columns{display:grid;grid-template-columns:1.15fr 1fr;gap:20px}.role-buttons{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}.role-buttons .btn{min-height:62px}.task-row{padding:16px 0;border-top:1px solid var(--line);margin-top:12px}.task-row p{font-size:12px;margin-top:8px;overflow-wrap:anywhere}.avatar{width:36px;height:36px;flex-shrink:0;border-radius:50%;background:var(--soft);color:var(--pink);display:grid;place-items:center;font-weight:700}
.upload{border:2px dashed #e5c3cb;border-radius:20px;background:#fff8fa;text-align:center;padding:38px 20px}.upload h2{margin:12px 0 6px}.upload input{display:block;margin:20px auto 0;border:0;max-width:100%}.upload-icon{font-size:32px;color:var(--pink)}.upload img{max-width:100%;max-height:260px;object-fit:contain;border-radius:12px;margin:16px auto;display:block}.progress{width:100%;accent-color:var(--pink);height:10px;margin:14px 0}.scan-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}.review-row{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;margin:12px 0}.review-top{display:flex;gap:12px;align-items:flex-start}.review-top label{min-width:0;flex:1;font-weight:700;overflow-wrap:anywhere}.review-top input{margin-top:6px;width:18px;height:18px;accent-color:var(--pink)}.review-fields{display:grid;grid-template-columns:1fr 1fr 1.4fr;gap:12px;margin:14px 0}.field-label{font-size:12px;color:#757683;display:flex;flex-direction:column;gap:6px;margin-bottom:16px}.form input,.form select{width:100%}.notice{background:#fff8e9;border:1px solid #f5e5c2;border-radius:12px;padding:12px 14px;font-size:12px;color:#8d7542;margin:16px 0}.schedule-row{display:flex;align-items:center;gap:16px;padding:20px;border:1px solid var(--line);border-radius:16px;background:white;margin-top:12px}.schedule-row h3{overflow-wrap:anywhere}.schedule-row .actions{display:flex;gap:10px;flex-wrap:wrap}.status{font-size:11px;color:var(--muted)}.mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.metric{padding:24px;background:#fff;border-radius:18px;border:1px solid var(--line)}.metric b{display:block;font-size:32px;margin-bottom:4px}.conversation{display:flex;gap:14px;align-items:center;width:100%;background:white;padding:18px;border-bottom:1px solid var(--line);text-align:left}.conversation .grow{overflow-wrap:anywhere}.chat-log{max-height:48dvh;overflow-y:auto;padding:10px 0}.bubble{background:#f1f2f6;border-radius:14px;padding:12px 16px;margin:10px 0;max-width:85%;width:fit-content;overflow-wrap:anywhere}.bubble.mine{background:var(--soft);color:#a63850;margin-left:auto}.chat-form{display:flex;gap:10px;margin-top:14px}.chat-form input{flex:1;min-width:0}
dialog{border:0;border-radius:24px;width:500px;max-width:calc(100vw - 28px);max-height:90dvh;padding:32px;box-shadow:0 30px 90px #24243030;color:var(--ink)}dialog::backdrop{background:#20202d66;backdrop-filter:blur(4px)}dialog h2{margin-bottom:10px}dialog p{color:var(--muted);font-size:12px}.dialog-close{position:absolute;top:12px;right:14px;font-size:24px;background:transparent;color:var(--muted);width:34px;height:34px}.form{margin-top:20px}.form .btn{width:100%}#toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%);max-width:calc(100vw - 32px);background:#252633;color:white;padding:12px 20px;border-radius:14px;z-index:100;opacity:0;pointer-events:none;transition:opacity .2s}#toast.visible{opacity:1}.back{margin-bottom:18px;background:transparent;padding:0;color:var(--muted);min-height:40px}
@media(min-width:1450px){.grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media(max-width:1100px){.sidebar{width:200px;padding:30px 18px}.workspace{margin-left:200px}main{padding:28px}.topbar{padding:0 28px}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.detail-columns{grid-template-columns:1fr}.slot-grid{gap:8px}.slot strong{font-size:20px}.schedule-row{align-items:flex-start;flex-wrap:wrap}.schedule-row .actions{width:100%;margin-left:52px}}
@media(max-width:700px){.sidebar{display:none}.workspace{margin-left:0}.topbar{height:68px;padding:0 20px;position:sticky;top:0;z-index:10}.breadcrumb{display:none}.mobile-brand{display:flex;align-items:center;gap:8px;font-size:20px;font-weight:800}.mobile-brand img{width:32px;height:32px;border-radius:10px}.account{font-size:12px;max-width:150px;padding:8px 12px}main{padding:24px 18px 30px;min-height:calc(100dvh - 200px)}h1{font-size:26px}.title-row{align-items:flex-start;margin-bottom:22px}.title-row .btn{font-size:11px;padding:10px 12px}.subtitle{font-size:12px}.hero{padding:24px;grid-template-columns:1fr;border-radius:20px;margin-bottom:24px}.hero h2{font-size:22px}.hero-art{display:none}.filters{align-items:flex-start;gap:12px;flex-direction:column}.search{width:100%}.grid{grid-template-columns:1fr;gap:16px}.cover{height:150px}.cover h3{font-size:21px}.dept{min-height:auto}.card-bottom{padding:16px 20px}.counts{gap:30px}.mobile-nav{display:flex;position:fixed;bottom:0;left:0;right:0;background:#fffffffa;border-top:1px solid var(--line);padding:6px 10px calc(6px + env(safe-area-inset-bottom));z-index:20;backdrop-filter:blur(14px)}.mobile-nav button{flex:1;background:transparent;color:#9b9da8;font-size:23px;min-height:54px}.mobile-nav small{display:block;font-size:10px;margin-top:-2px}.mobile-nav .active{color:var(--pink)}footer{padding:0 20px calc(90px + env(safe-area-inset-bottom));font-size:10px}.slot-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.slot strong{font-size:23px}.detail-head{padding:22px}.detail-head h1{font-size:24px}.panel{padding:20px}.review-fields{grid-template-columns:1fr 1fr}.review-fields>label:last-child{grid-column:1/-1}.review-top{gap:8px}.review-top .btn{font-size:11px;padding:8px}.schedule-row{padding:16px;gap:12px}.schedule-row .actions{margin-left:0}.schedule-row .actions .btn{flex:1}.mini-grid{gap:8px}.metric{padding:16px 10px}.metric b{font-size:26px}.metric small{font-size:10px}.role-buttons{gap:8px}.role-buttons .btn{font-size:12px}dialog{padding:28px 22px}.upload{padding:28px 16px}#toast{bottom:90px}.chat-form{flex-wrap:wrap}.chat-form input{min-width:150px}.detail-columns{gap:0}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
/* Small text stays readable on both white and pastel backgrounds. */
.sidebar nav button{color:#656775}
.side-note small,footer{color:#656775}
.hero p{color:#805563}
.hero .pill{color:#a63451}
.notice{color:#786133}
.field-label{color:#626573}
.mobile-nav button{color:#676b7b}
.account,.badge{color:#bc2c4c}
.slot small{color:var(--muted)}
.review-fields{grid-template-columns:minmax(0,1fr) minmax(0,1fr) minmax(0,1.4fr)}
.field-label{min-width:0}
.field-label select{width:100%;min-width:0}
@media(max-width:700px){.review-fields{grid-template-columns:repeat(2,minmax(0,1fr))}}