:root { --ink:#18202b; --muted:#77808f; --line:#e8ebf0; --blue:#2f6bff; --bg:#f6f7f9; }
* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { margin:0; color:var(--ink); background:var(--bg); font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif; }
button,input,textarea { font:inherit; }
button { color:inherit; }
main { min-height:100vh; display:flex; }
.sidebar { position:fixed; inset:0 auto 0 0; width:228px; display:flex; flex-direction:column; padding:26px 18px 20px; background:#fff; border-right:1px solid var(--line); z-index:10; }
.brand { display:flex; gap:12px; align-items:center; padding:0 10px 30px; color:inherit; text-decoration:none; }
.brand>span { width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:var(--ink);color:#fff;font-size:18px;font-weight:800; }
.brand div { display:flex; flex-direction:column; line-height:1.2; }.brand b{font-size:17px}.brand small{font-size:11px;color:#98a0ad;margin-top:3px;letter-spacing:.08em}
nav { display:grid; gap:5px; } nav a { display:flex;gap:12px;align-items:center;padding:11px 13px;border-radius:9px;color:#687181;text-decoration:none;font-size:14px;font-weight:600; } nav a:hover,nav a.active{color:var(--ink);background:#f0f3f7} nav a.active{color:var(--blue)}
.sidebar-foot { margin-top:auto;padding:16px 12px 2px;border-top:1px solid var(--line); }.sidebar-foot>span{font-size:10px;text-transform:uppercase;letter-spacing:.12em;color:#a0a6b0}.sidebar-foot p{font-size:11px;color:#7f8793;display:flex;align-items:center;gap:7px}.sidebar-foot i{width:7px;height:7px;border-radius:50%;background:#27b879;box-shadow:0 0 0 3px #dcf7eb}
.content { width:calc(100% - 228px); margin-left:228px; min-width:760px; }
header { height:76px;padding:0 42px;display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.9);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:8;backdrop-filter:blur(10px) }
.search { width:min(440px,50vw);height:42px;display:flex;align-items:center;gap:10px;padding:0 13px;color:#949ca8;background:#f5f6f8;border:1px solid transparent;border-radius:9px }.search:focus-within{background:#fff;border-color:#bacbff;box-shadow:0 0 0 3px #edf2ff}.search input{min-width:0;flex:1;border:0;outline:0;background:transparent;font-size:13px}.search kbd{font-family:inherit;font-size:10px;padding:3px 6px;background:#fff;border:1px solid #dfe3e9;border-radius:4px;color:#a1a7b1}
.btn { border:0;border-radius:8px;padding:10px 16px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:13px;font-weight:700;cursor:pointer }.btn.primary{background:var(--ink);color:#fff;box-shadow:0 3px 10px #1a24301c}.btn.primary:hover{background:#2b3746}.btn.secondary{background:#f1f3f6}.btn.danger{margin-right:auto;background:#fff0f0;color:#d84343}.btn:disabled{opacity:.6;cursor:wait}
.hero { padding:42px 44px 28px;display:flex;align-items:flex-end;justify-content:space-between;gap:25px }.hero p,.eyebrow{margin:0 0 8px;text-transform:uppercase;letter-spacing:.12em;font-size:10px;font-weight:800;color:#9aa2ae}.hero h1{margin:0;font-family:Georgia,"Songti SC",serif;font-size:30px;letter-spacing:-.03em}.hero>div>span{display:block;margin-top:9px;color:#7c8592;font-size:13px}.quick-add{display:flex;align-items:center;gap:12px;padding:13px 17px;border:1px solid #dfe3e8;background:#fff;border-radius:11px;text-align:left;cursor:pointer;box-shadow:0 4px 18px #1d29370a}.quick-add>svg{color:var(--blue)}.quick-add span{display:flex;flex-direction:column;font-size:13px;font-weight:700}.quick-add small{margin-top:3px;font-size:10px;color:#9299a3;font-weight:400}
.metrics { display:grid;grid-template-columns:repeat(3,1fr);gap:15px;padding:0 44px 22px }.metrics>div{display:flex;align-items:center;gap:14px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:11px}.metric-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:10px}.metric-icon.blue{color:#2864f0;background:#edf3ff}.metric-icon.violet{color:#7c4ce4;background:#f3efff}.metric-icon.amber{color:#d98a0b;background:#fff5e3}.metrics p{margin:0;display:grid;grid-template-columns:auto auto;align-items:baseline;column-gap:6px;font-size:11px;color:#818995}.metrics b{grid-column:1;font-size:24px;color:var(--ink);margin-top:3px}.metrics small{grid-column:2;font-size:10px}
.dashboard-grid { display:grid;grid-template-columns:minmax(480px,1.65fr) minmax(300px,.8fr);gap:18px;padding:0 44px 44px }.panel{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}.panel-head{display:flex;justify-content:space-between;align-items:center;padding:23px 24px 14px}.panel-head h2{margin:0;font-size:18px}.panel-head button{border:0;background:none;color:#6e7783;font-size:11px;display:flex;align-items:center;cursor:pointer}.filters{display:flex;gap:7px;padding:0 24px 16px;border-bottom:1px solid var(--line);overflow:hidden}.filters button{white-space:nowrap;border:1px solid #e2e5ea;border-radius:20px;background:#fff;padding:6px 11px;font-size:10px;cursor:pointer}.filters button.selected{background:var(--ink);border-color:var(--ink);color:#fff}
.note-list{display:grid}.note-row{width:100%;display:grid;grid-template-columns:40px minmax(0,1fr) auto 18px;align-items:center;gap:13px;padding:15px 22px;border:0;border-bottom:1px solid #eff1f4;background:#fff;text-align:left;cursor:pointer}.note-row:last-child{border-bottom:0}.note-row:hover{background:#fafbfc}.note-course{width:38px;height:38px;border-radius:9px;display:grid;place-items:center;color:#fff;font-size:13px;font-weight:800}.note-body{display:flex;min-width:0;flex-direction:column}.note-body>b{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.note-body>small{margin:5px 0 7px;color:#8a929e;font-size:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.note-body>span{display:flex;gap:6px}.note-body i{font-style:normal;font-size:9px;color:#71809a;background:#f1f4f8;padding:3px 6px;border-radius:4px}.note-row time{font-size:9px;color:#a1a8b2}.note-row>svg{color:#b2b8c0}.empty{min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;color:#9aa1ac;font-size:12px}.empty b{color:#616b78}
.stats-panel{padding-bottom:16px}.donut-wrap{display:grid;place-items:center;padding:5px 0 22px}.donut{width:150px;height:150px;border-radius:50%;display:grid;place-items:center;position:relative}.donut:after{content:"";position:absolute;width:96px;height:96px;border-radius:50%;background:#fff}.donut span{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;color:#9aa1aa;font-size:10px}.donut b{font-size:23px;color:var(--ink)}.legend{padding:0 20px;display:grid}.legend button{border:0;background:#fff;display:grid;grid-template-columns:8px 1fr auto 38px;align-items:center;gap:9px;padding:9px 3px;text-align:left;cursor:pointer;border-bottom:1px solid #f0f1f3}.legend button:hover{background:#fafbfc}.legend i{width:7px;height:7px;border-radius:50%}.legend span{font-size:11px}.legend b{font-size:11px}.legend small{font-size:9px;color:#9aa1ab;text-align:right}
footer{text-align:center;color:#a5abb3;font-size:10px;padding:0 0 26px}
.modal-backdrop{position:fixed;inset:0;z-index:50;display:grid;place-items:center;padding:24px;background:#17202bbb;backdrop-filter:blur(3px);overflow:auto}.modal{width:min(780px,100%);max-height:calc(100vh - 48px);overflow:auto;background:#fff;border-radius:14px;box-shadow:0 28px 80px #0004}.modal-head{position:sticky;top:0;z-index:2;display:flex;align-items:flex-start;justify-content:space-between;padding:24px 28px 18px;background:#fff;border-bottom:1px solid var(--line)}.modal-head h2{margin:0;font-family:Georgia,"Songti SC",serif;font-size:23px}.icon-btn{border:0;background:#f2f4f6;width:34px;height:34px;display:grid;place-items:center;border-radius:8px;cursor:pointer}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;padding:25px 28px}.form-grid label{display:flex;flex-direction:column;gap:7px;font-size:11px;font-weight:700;color:#555f6c}.form-grid label>span{color:#e44}.form-grid input,.form-grid textarea{width:100%;border:1px solid #dfe3e8;border-radius:8px;padding:10px 12px;outline:0;color:var(--ink);font-size:12px;line-height:1.6;resize:vertical}.form-grid input:focus,.form-grid textarea:focus{border-color:#9bb5ff;box-shadow:0 0 0 3px #edf2ff}.span-2{grid-column:1/-1}.section-label{display:flex;align-items:center;gap:10px;border-top:1px solid var(--line);padding-top:20px}.section-label span{font-size:14px;font-weight:800}.section-label small,.photo-head small{font-size:10px;color:#9aa1aa}.photo-head{display:flex;align-items:center;justify-content:space-between}.photo-head>div{display:flex;flex-direction:column;gap:4px}.photo-head b{font-size:11px}.upload-btn{border:1px solid #dce1e7!important;border-radius:8px;padding:8px 12px;display:flex!important;flex-direction:row!important;align-items:center;gap:7px!important;cursor:pointer}.upload-btn input{display:none}.photo-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:9px;margin-top:12px}.photo{position:relative;aspect-ratio:1;border-radius:8px;overflow:hidden;background:#f1f3f5}.photo img{width:100%;height:100%;object-fit:cover}.photo button{position:absolute;right:5px;top:5px;width:27px;height:27px;border:0;border-radius:6px;display:grid;place-items:center;background:#17202bcc;color:#fff;cursor:pointer}.modal-actions{position:sticky;bottom:0;display:flex;justify-content:flex-end;gap:9px;padding:15px 28px;background:#fff;border-top:1px solid var(--line)}
.detail-modal{width:min(720px,100%)}.detail-modal>section,.detail-columns{margin:24px 28px}.detail-modal h3{margin:0 0 10px;font-size:12px}.detail-modal p{margin:0;font-size:12px;color:#596473;line-height:1.8}.preserve{white-space:pre-wrap}.detail-meta{display:flex;gap:7px;align-items:center;padding:15px 28px 0}.detail-meta span,.keyword-list span{font-size:9px;padding:4px 7px;background:#eef2f7;color:#69778c;border-radius:5px}.detail-meta time{margin-left:auto;font-size:9px;color:#a1a8b1}.summary-box{padding:16px!important;background:#f6f8fb;border-left:3px solid var(--blue);border-radius:4px}.detail-columns{display:grid;grid-template-columns:1fr 1fr;gap:20px}.detail-columns section{margin:0}.detail-columns ul{padding-left:17px;margin:0;color:#596473;font-size:11px;line-height:1.8}.keyword-list{display:flex;flex-wrap:wrap;gap:7px}.detail-photos{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.detail-photos a{aspect-ratio:1;border-radius:8px;overflow:hidden}.detail-photos img{width:100%;height:100%;object-fit:cover}
@media(max-width:950px){.sidebar{width:190px}.content{margin-left:190px;width:calc(100% - 190px)}header,.hero{padding-left:28px;padding-right:28px}.metrics,.dashboard-grid{padding-left:28px;padding-right:28px}.dashboard-grid{grid-template-columns:1fr}.stats-panel{display:grid;grid-template-columns:1fr 1fr}.stats-panel .panel-head{grid-column:1/-1}.legend{align-self:center}.donut-wrap{padding-top:10px}}