:root{--ink:#14231e;--mut:#4f5d57;--g:#0e4a3a;--g2:#145c49;--bg:#f5f2ea;--line:#e0d9c8;--card:#fff;--gold:#7a5510;--goldbg:#f8efd9;--red:#a3261b;--redbg:#fbe9e7;--okbg:#e4efe9;--r:12px}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
h1,h2,h3{font-family:Georgia,"Times New Roman",serif;font-weight:600;letter-spacing:-.01em;line-height:1.2;margin:0}
h1{font-size:30px}h2{font-size:21px}h3{font-size:17px}p{margin:0}a{color:var(--g)}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;padding:8px 12px;z-index:9}
:focus-visible{outline:3px solid #2b7a64;outline-offset:2px}
.mut{color:var(--mut);font-size:14px}.sp{height:20px}.right{margin-left:auto}
.shell{display:flex;min-height:100vh}
.side{width:244px;flex:none;background:#fff;border-right:1px solid var(--line);padding:22px 14px;position:sticky;top:0;height:100vh;overflow:auto}
.side.dark{background:var(--g);border:0;color:#fff}.side.dark a{color:#e9f3ef}
.brand{font:600 21px Georgia,serif;padding:0 10px 14px;display:block;text-decoration:none;color:inherit}
.side a.nav{display:block;padding:9px 12px;border-radius:9px;text-decoration:none;color:var(--ink);font-size:15px}
.side.dark a.nav{color:#e9f3ef}.side a.nav:hover{background:var(--okbg)}.side.dark a.nav:hover{background:#1b6050}
.side a.on{background:var(--okbg);color:var(--g);font-weight:700}.side.dark a.on{background:#1b6050;color:#fff}
.side .grp{font-size:11px;font-weight:700;letter-spacing:.09em;color:var(--mut);margin:18px 12px 4px}.side.dark .grp{color:#a9cfc2}
.main{flex:1;min-width:0}
.top{display:flex;align-items:center;gap:16px;padding:12px 28px;background:#fff;border-bottom:1px solid var(--line);flex-wrap:wrap}
.top form.s{flex:1 1 220px;max-width:380px}
.wrap{max-width:1040px;margin:0 auto;padding:30px 28px 60px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:0 1px 2px rgba(20,35,30,.04)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px}
.two{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:26px}
.cover{height:96px;border-radius:9px;margin-bottom:14px;background:linear-gradient(135deg,#cfe0d8,#e9e0c6)}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 20px;border:0;border-radius:10px;background:var(--g);color:#fff;font:600 15px system-ui,sans-serif;text-decoration:none;cursor:pointer}
.btn:hover{background:var(--g2)}.btn.alt{background:#fff;color:var(--g);border:1.5px solid var(--g)}.btn.alt:hover{background:var(--okbg)}
.btn.danger{background:#fff;color:var(--red);border:1.5px solid var(--red)}.btn.sm{min-height:36px;padding:0 14px;font-size:14px}
.btn[disabled]{background:#d8d4c8;color:#4f5d57;cursor:not-allowed}
input,select,textarea{width:100%;min-height:44px;border:1.5px solid #78837d;border-radius:10px;padding:10px 12px;font:15px system-ui,sans-serif;background:#fff;color:var(--ink)}
textarea{min-height:110px;resize:vertical}input[type=checkbox]{width:auto;min-height:0}
label{display:block;font-size:14px;font-weight:600;margin:0 0 6px}.f{margin-bottom:16px}
.help{font-size:13px;color:var(--mut);margin-top:6px}
.tag{display:inline-block;padding:2px 10px;border-radius:99px;font-size:12px;font-weight:700;background:var(--okbg);color:var(--g)}
.tag-draft,.tag-demo{background:var(--goldbg);color:var(--gold)}.tag-archived{background:#ece6d8;color:#3d4a44}
progress{width:100%;height:7px;border:0;border-radius:4px;background:#e6e0d2;appearance:none;-webkit-appearance:none;display:block}
progress::-webkit-progress-bar{background:#e6e0d2;border-radius:4px}progress::-webkit-progress-value{background:var(--g);border-radius:4px}progress::-moz-progress-bar{background:var(--g);border-radius:4px}
.alert{padding:12px 16px;border-radius:10px;margin-bottom:18px;font-size:15px}.alert.ok{background:var(--okbg);color:#0b3a2d}.alert.error{background:var(--redbg);color:#8f1f15}.alert.warn{background:var(--goldbg);color:var(--gold)}
.row{display:flex;align-items:center;gap:12px;padding:11px 0;border-top:1px solid #ece6d8;font-size:15px}.row:first-child{border-top:0}
table{width:100%;border-collapse:collapse;font-size:14px}th{text-align:left;color:var(--mut);font-weight:600;padding:10px 8px;border-bottom:1px solid var(--line)}td{padding:11px 8px;border-bottom:1px solid #ece6d8;vertical-align:middle}
.tablewrap{overflow-x:auto}
.player{aspect-ratio:16/9;width:100%;background:#0d1a16;border-radius:var(--r);overflow:hidden;display:flex;align-items:center;justify-content:center;color:#fff}
.player video{width:100%;height:100%;background:#000}
.prose{max-width:70ch;font-size:17px;line-height:1.7;white-space:pre-line}
.hero{display:flex;gap:24px;align-items:center;flex-wrap:wrap}.hero>div{flex:1 1 300px}
.chip{display:inline-block;padding:6px 14px;border-radius:99px;background:#fff;border:1px solid var(--line);font-size:14px}
.pager{display:flex;gap:6px;margin-top:16px}.pager a{padding:6px 12px;border-radius:8px;border:1px solid var(--line);text-decoration:none;background:#fff}.pager a.on{background:var(--g);color:#fff;border-color:var(--g)}
.inline{display:inline}.inline button{vertical-align:middle}
.plain{display:flex;min-height:100vh}.plain .l{flex:1 1 0;background:var(--g);color:#fff;padding:56px;display:flex;flex-direction:column;justify-content:space-between}.plain .r{flex:1 1 0;display:flex;align-items:center;justify-content:center;padding:36px}.plain .box{width:100%;max-width:420px}
.cert{max-width:820px;margin:40px auto;background:#fff;border:2px solid var(--g);padding:60px;text-align:center;border-radius:6px}
@media(max-width:900px){.shell{flex-direction:column}.side{width:auto;height:auto;position:static;display:flex;flex-wrap:wrap;gap:4px;padding:10px}.side .grp{display:none}.two{grid-template-columns:1fr}.wrap{padding:20px 16px 50px}.plain .l{display:none}}
@media print{.side,.top,.noprint{display:none}.cert{border:2px solid #000;margin:0}}
[data-full]{width:100%}
.box.wide{max-width:640px;padding:20px 0}.plain .r:has(.wide){align-items:flex-start}code{background:#ece6d8;padding:1px 6px;border-radius:5px;font-size:13px}
/* shelves, thumbnails */
.shelf-h{display:flex;align-items:baseline;justify-content:space-between;margin:34px 0 14px}.shelf-h:first-of-type{margin-top:8px}
.shelf{display:flex;gap:18px;overflow-x:auto;padding:2px 2px 12px;scroll-snap-type:x proximity}
.shelf>*{flex:0 0 252px;scroll-snap-align:start;text-decoration:none;color:inherit}
.thumb{position:relative;aspect-ratio:16/9;border-radius:10px;overflow:hidden;display:flex;align-items:flex-end;padding:12px;font:600 15px/1.25 Georgia,serif;color:#fff}
.g0{background:linear-gradient(135deg,#0e4a3a,#2e7d67)}.g1{background:linear-gradient(135deg,#6b4a12,#b8892b)}.g2{background:linear-gradient(135deg,#27465f,#4f7fa3)}.g3{background:linear-gradient(135deg,#4a2f5e,#8a63a6)}.g4{background:linear-gradient(135deg,#6e2a2a,#b45a4a)}.g5{background:linear-gradient(135deg,#2f4f2f,#6f9a5a)}
.dur{position:absolute;right:8px;top:8px;background:rgba(0,0,0,.62);color:#fff;font:600 12px system-ui,sans-serif;padding:2px 8px;border-radius:6px}
.thumb progress{position:absolute;left:0;right:0;bottom:0;height:5px;border-radius:0}
.cap{padding:9px 2px 0;font-size:14px;line-height:1.35}.cap b{display:block;font-weight:600}
.livecard{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px;display:flex;flex-direction:column;gap:6px}
.livecard .when{font:600 13px system-ui,sans-serif;color:var(--gold)}
/* account tabs */
.tabs{display:flex;gap:26px;border-bottom:1px solid var(--line);margin:6px 0 22px;flex-wrap:wrap}.tabs a{padding:10px 0;text-decoration:none;color:var(--mut);font-size:15px;border-bottom:3px solid transparent}.tabs a.on{color:var(--g);font-weight:700;border-color:var(--g)}
.narrow{max-width:640px}.check{display:flex;gap:12px;align-items:flex-start;padding:10px 0}.check input{margin-top:5px}.check b{display:block;font-weight:600}
.notice{background:#f2eee3;border-radius:10px;padding:14px 16px;font-size:14px}
/* badges */
.badges{display:flex;gap:16px;flex-wrap:wrap}.badge{width:82px;text-align:center;font-size:12px;color:var(--mut)}
.badge i{display:flex;align-items:center;justify-content:center;width:64px;height:64px;margin:0 auto 6px;border-radius:50%;font:700 22px Georgia,serif;font-style:normal;background:#ece6d8;color:#8a948f;border:3px dashed #cfc7b2}
.badge.on i{border:3px solid #fff;box-shadow:0 0 0 3px var(--bc,#a9781f);color:#fff;background:var(--bc,#a9781f)}
.b3{--bc:#a4513f}.b7{--bc:#4c6f94}.b15{--bc:#b8791f}.b30{--bc:#2f7d5f}.b60{--bc:#6a4c93}.b90{--bc:#14231e}
/* devices */
.dev{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 18px;margin-bottom:10px}
/* calendar */
.seg{display:inline-flex;border:1.5px solid var(--g);border-radius:10px;overflow:hidden}.seg a{padding:8px 18px;text-decoration:none;color:var(--g);font-weight:600;font-size:14px}.seg a.on{background:var(--g);color:#fff}
.cal{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff}
.cal .h{padding:8px 10px;font-size:12px;font-weight:700;color:var(--mut);background:#faf7f0;border-bottom:1px solid var(--line)}
.cal .c{min-height:104px;padding:6px 7px;border-right:1px solid #ece6d8;border-bottom:1px solid #ece6d8;font-size:12px}.cal .c:nth-child(7n){border-right:0}
.cal .c.out{background:#faf8f3;color:#9aa39e}.cal .c.st{background:#e9f5ee}
.cal .n{display:inline-flex;min-width:24px;height:24px;align-items:center;justify-content:center;border-radius:50%;font-weight:600;margin-bottom:4px}.cal .today .n{background:var(--g);color:#fff}
.cal a.ev{display:block;background:#fff;border:1px solid var(--line);border-radius:6px;padding:3px 6px;margin-top:4px;text-decoration:none;color:var(--ink);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.cal a.ev:hover{border-color:var(--g)}
.mnav{display:flex;align-items:center;gap:14px}.mnav a{text-decoration:none;font-size:20px;padding:0 8px}
.lesson-actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
@media(max-width:900px){.cal .c{min-height:64px}.cal a.ev{font-size:0;height:8px;padding:0;background:var(--g);border-color:var(--g)}.shelf>*{flex-basis:210px}}