:root{--paper:#f6f2e8;--paper-2:#efe8d8;--card:#fbf8f0;--ink:#22201b;--ink-soft:#6a6457;--ink-faint:#9b9483;--line:rgba(34,32,27,.1);--teal:#0f6e56;--teal-2:#0a5443;--teal-soft:#e3efe9;--rust:#b1502c;--rust-soft:#f4e7df;--gridline:rgba(34,32,27,.045)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Noto Sans TC,system-ui,sans-serif;color:var(--ink);background-color:var(--paper);background-image:linear-gradient(var(--gridline) 1px,transparent 1px),linear-gradient(90deg,var(--gridline) 1px,transparent 1px);background-size:26px 26px;line-height:1.8;-webkit-font-smoothing:antialiased}main{max-width:730px;margin:0 auto;padding:44px 28px 90px}.brand{display:flex;align-items:baseline;gap:9px}.brand h1{font-family:Fraunces,serif;font-weight:600;font-size:34px;letter-spacing:-.01em}.brand .dot{width:9px;height:9px;border-radius:50%;background:var(--rust);transform:translateY(-4px)}.tagline{font-size:14px;color:var(--ink-soft);margin-top:6px}.progress{font-size:13px;color:var(--ink-faint);margin-top:6px}.tabs{display:inline-flex;gap:4px;background:var(--paper-2);padding:4px;border-radius:12px;margin:26px 0 6px;flex-wrap:wrap}.tab{border:none;background:none;font-family:inherit;font-size:14px;color:var(--ink-soft);padding:8px 16px;border-radius:9px;cursor:pointer;transition:.16s}.tab.active{background:var(--card);color:var(--teal-2);font-weight:500;box-shadow:0 1px 4px #22201b14}.hint{font-size:12.5px;color:var(--ink-faint);margin:4px 2px 14px}.entry{display:flex;align-items:baseline;gap:11px;padding:10px 13px;border-radius:10px;text-decoration:none;transition:background .15s}a.entry:hover{background:var(--paper-2)}.entry .lec{font-family:Fraunces,serif;font-size:11.5px;color:var(--ink-faint);flex:none;min-width:32px}.entry .ttl{font-size:15px;color:var(--teal-2);font-weight:500}.entry.todo .ttl{color:var(--ink-faint);font-weight:400}.entry .ldate{font-size:11.5px;color:var(--ink-faint);flex:none;min-width:42px;font-family:Fraunces,serif}.entry .right{margin-left:auto;flex:none;font-size:11.5px}.entry .right.done{color:var(--teal)}.entry .right.todo{color:var(--ink-faint)}.tl{position:relative;margin-left:8px;padding-left:26px;border-left:2px solid var(--line);margin-top:4px}.daygrp{position:relative;margin-bottom:18px}.daygrp .date{font-family:Fraunces,serif;font-size:15px;color:var(--ink);font-weight:600;margin-bottom:3px}.daygrp .date:before{content:"";position:absolute;left:-33px;top:7px;width:11px;height:11px;border-radius:50%;background:var(--paper);border:2.5px solid var(--teal)}.teach-tag{font-size:11px;color:var(--rust);background:var(--rust-soft);padding:1px 8px;border-radius:20px;margin-left:auto;flex:none}.grp{margin-bottom:24px}.grp h2{font-family:"Noto Serif TC",serif;font-size:17px;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:10px;margin-bottom:5px;padding-bottom:6px;border-bottom:1px solid var(--line)}.grp h2 .cnt{font-family:Fraunces,serif;font-size:13px;color:var(--ink-faint);margin-left:auto}.grp .empty{font-size:13.5px;color:var(--ink-faint);padding:9px 13px}.hidden{display:none}.subj-band{font-family:"Noto Serif TC",serif;font-size:13.5px;font-weight:600;color:var(--rust);letter-spacing:.05em;margin:26px 2px 10px;display:flex;align-items:center;gap:11px}.subj-band:first-child{margin-top:6px}.subj-band:after{content:"";flex:1;height:1px;background:var(--line)}.sec{border:1px solid var(--line);border-radius:11px;background:var(--card);margin-bottom:8px;overflow:hidden}.sec-head{display:flex;align-items:center;gap:11px;padding:12px 14px;cursor:pointer;user-select:none;transition:background .15s}.sec-head:hover{background:var(--paper-2)}.sec-head .caret{flex:none;font-size:10px;color:var(--ink-faint);transition:transform .18s;display:inline-block}.sec.open .sec-head .caret{transform:rotate(90deg)}.sec-head .sec-ttl{font-size:15px;font-weight:500;color:var(--ink)}.sec-head .sec-cnt{margin-left:auto;flex:none;font-family:Fraunces,serif;font-size:12.5px;color:var(--ink-faint)}.sec.has-done .sec-head .sec-cnt{color:var(--teal)}.sec-body{display:none;margin:0 14px 10px 38px;padding-top:2px;border-left:1px dashed var(--line)}.sec.open .sec-body{display:block}.vid{display:flex;align-items:baseline;gap:10px;padding:6px 0 6px 14px;border-radius:7px;text-decoration:none;font-size:14px}a.vid:hover{background:var(--paper-2)}.vid .vno{flex:none;font-family:Fraunces,serif;font-size:11px;color:var(--ink-faint);min-width:34px}.vid .vt{color:var(--ink-faint)}.vid.done .vt{color:var(--teal-2);font-weight:500}.vid.res .vt{color:var(--ink-soft);font-style:italic}.vid .ck{color:var(--teal);margin-left:6px;font-size:12px}