.linkbtn{background:none;border:0;padding:0;font:inherit;font-weight:600;color:var(--accent);text-decoration:underline;text-underline-offset:3px;cursor:pointer}
.linkbtn:hover{text-decoration-thickness:2px}

.ann-home{margin-top:8px}
.ann-list{display:grid;gap:10px}
.ann{background:var(--surface);border:1px solid var(--line);border-left:5px solid var(--c);border-radius:14px;padding:14px 18px}
.ann.pinned{box-shadow:0 10px 22px -16px rgba(10,14,40,.55)}
.ann-meta{display:flex;flex-wrap:wrap;align-items:center;gap:4px 12px;font-size:.78rem;color:var(--muted);margin-bottom:4px}
.ann-tag{font-weight:700;color:var(--c)}
.ann-pin{display:inline-flex;align-items:center;gap:4px;font-weight:700;color:var(--ink)}
.ann h3{font-family:var(--display);font-size:1.15rem;line-height:1.25;margin:0 0 4px}
.ann p{margin:0;white-space:pre-wrap;line-height:1.6;overflow-wrap:anywhere}
.ann-list+.linkbtn{margin-top:12px;display:inline-block}
.ann-note{color:var(--muted);font-size:.86rem;margin:12px 0 0}

.course-ann{padding-top:26px}
.course-ann:empty{padding:0}
.ann-head{display:flex;align-items:baseline;gap:10px;margin-bottom:12px}
.ann-head h2{font-family:var(--display);font-size:1.5rem;letter-spacing:-.015em;margin:0}
.ann-head span{color:var(--muted);font-size:.9rem}
.course-ann+.detail{padding-top:22px}

.folder.unsel .front{filter:saturate(.5) brightness(.96)}
.folder.unsel .back,.folder.unsel .tab{filter:saturate(.5) brightness(.72)}

.pick{position:fixed;inset:0;z-index:75;background:rgba(8,14,34,.82);display:grid;place-items:center;padding:18px;overflow:auto;animation:fade .25s}
.pick-card{position:relative;width:min(560px,100%);background:var(--surface);color:var(--ink);border-radius:22px;padding:56px 26px 22px;box-shadow:0 40px 80px -30px rgba(0,0,0,.6);animation:rise .4s var(--ease)}
.pick-seal{position:absolute;top:-38px;left:50%;transform:translateX(-50%);width:76px;height:76px;border-radius:50%;background:#fff;padding:3px;box-shadow:0 12px 30px -10px rgba(0,0,0,.5)}
.pick-card h2{font-family:var(--display);font-size:1.6rem;letter-spacing:-.02em;margin:0 0 8px;text-align:center}
.pick-card>p{color:var(--muted);margin:0 0 18px;text-align:center;font-size:.95rem}
.pick-card>p b{color:var(--ink)}
.pick-card .hint{margin:14px 0 0;font-size:.8rem}
.pick-list{display:grid;gap:9px}
.pick-opt{display:flex;align-items:center;gap:14px;width:100%;text-align:left;background:var(--bg);border:2px solid var(--line);border-left:6px solid var(--c);border-radius:14px;padding:13px 14px;transition:border-color .2s,background .2s,transform .15s,opacity .2s}
.pick-opt:hover{transform:translateY(-1px)}
.pick-opt.on{border-color:var(--c);background:color-mix(in srgb,var(--c) 11%,var(--surface))}
.pick-opt.off{opacity:.5}
.pick-box{flex:none;width:24px;height:24px;border-radius:7px;border:2px solid var(--muted);display:grid;place-items:center;transition:all .18s}
.pick-opt.on .pick-box{background:var(--c);border-color:var(--c)}
.pick-opt.on .pick-box::after{content:"";width:6px;height:11px;border:solid #fff;border-width:0 2.5px 2.5px 0;transform:rotate(45deg) translate(-1px,-1px)}
.pick-txt b{display:block;font-family:var(--display);font-size:1.05rem;line-height:1.25}
.pick-txt small{display:block;color:var(--muted);font-size:.82rem;margin-top:2px}
.pick-foot{display:flex;align-items:center;gap:10px;margin-top:18px}
.pick-foot .grow{flex:1}
.pick-count{font-weight:700;font-variant-numeric:tabular-nums}
.pick-foot .btn:disabled{opacity:.45;cursor:not-allowed}

.ann-hint{margin:8px 0 18px}
.ann-form{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:18px;display:grid;gap:14px}
.ann-form h3{font-family:var(--display);font-size:1.1rem;margin:0}
.ann-form label{display:flex;flex-direction:column;gap:6px;font-size:.86rem;color:var(--muted)}
.ann-form input[type=text],.ann-form textarea,.ann-form select{border:1px solid var(--line);border-radius:10px;background:var(--bg);padding:10px 12px;color:var(--ink);font:inherit;outline:none;transition:border-color .2s}
.ann-form input[type=text]:focus,.ann-form textarea:focus,.ann-form select:focus{border-color:var(--accent)}
.ann-form textarea{resize:vertical;line-height:1.55}
.ann-row2{display:grid;grid-template-columns:1fr auto;gap:14px;align-items:end}
.ann-form label.chk{flex-direction:row;align-items:center;gap:8px;height:42px;color:var(--ink)}
.ann-actions{display:flex;gap:10px}
.ann-list-title{font-family:var(--display);font-size:1.1rem;margin:26px 0 10px}
.ann-list-title small{font-family:var(--body);color:var(--muted);font-weight:500;margin-left:6px}
.ann-admin-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.ann-row{display:flex;gap:12px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-left:5px solid var(--c);border-radius:12px;padding:12px 14px}
.ann-row-main{flex:1;min-width:0}
.ann-row-main b{display:block;line-height:1.3}
.ann-row-main p{margin:3px 0 0;color:var(--muted);font-size:.88rem;white-space:pre-wrap;overflow-wrap:anywhere}
.a-course.a-ann{font-weight:700}
@media (max-width:620px){.ann-row2{grid-template-columns:1fr}.pick-card{padding:52px 18px 18px}}

.ann.pinned{--bg1:color-mix(in srgb,var(--pc) 82%,#000);--bg2:color-mix(in srgb,var(--pc) 52%,#000);position:relative;overflow:hidden;border:0;border-radius:18px;padding:20px 24px 20px 26px;color:#fff;background:linear-gradient(135deg,var(--bg1),var(--bg2));box-shadow:0 22px 38px -22px var(--bg2),inset 0 0 0 1px rgba(255,255,255,.14)}
.ann.pinned::before{content:"";position:absolute;right:-46px;top:-46px;width:170px;height:170px;border-radius:50%;background:rgba(255,255,255,.09);pointer-events:none}
.ann.pinned::after{content:"";position:absolute;left:0;top:0;bottom:0;width:7px;background:#FFC53D}
.ann.pinned .ann-meta{color:rgba(255,255,255,.88);position:relative}
.ann.pinned .ann-tag{color:#fff}
.ann.pinned h3{font-size:1.45rem;color:#fff;position:relative}
.ann.pinned p{color:rgba(255,255,255,.96);font-size:1.02rem;position:relative}
.ann.pinned .ann-pin{background:#FFC53D;color:#3B2A00;padding:3px 11px 3px 9px;border-radius:999px;font-size:.7rem;font-weight:800;letter-spacing:.05em;text-transform:uppercase;animation:pinpulse 2.4s infinite}
.ann.pinned .ann-pin svg{transform:rotate(30deg)}
@keyframes pinpulse{0%,100%{box-shadow:0 0 0 0 rgba(255,197,61,.6)}60%{box-shadow:0 0 0 9px rgba(255,197,61,0)}}
.ann-new{background:#E5484D;color:#fff;font-size:.68rem;font-weight:800;letter-spacing:.05em;text-transform:uppercase;padding:2px 9px;border-radius:999px}

.folder .notif{position:absolute;top:-12px;right:-8px;z-index:6;display:flex;align-items:center;gap:6px;background:#E5484D;color:#fff;border-radius:999px;padding:5px 12px 5px 9px;font-size:.78rem;font-weight:800;line-height:1;box-shadow:0 10px 20px -8px rgba(229,72,77,.95),0 0 0 3px var(--bg);pointer-events:none}
.folder .notif::after{content:"";position:absolute;inset:-3px;border-radius:inherit;border:2px solid rgba(229,72,77,.65);animation:notifring 2s ease-out infinite}
.folder .notif svg{animation:bellring 3.2s ease-in-out infinite;transform-origin:50% 0}
@keyframes notifring{from{transform:scale(1);opacity:.9}to{transform:scale(1.28,1.6);opacity:0}}
@keyframes bellring{0%,84%,100%{transform:rotate(0)}87%{transform:rotate(16deg)}90%{transform:rotate(-14deg)}93%{transform:rotate(9deg)}96%{transform:rotate(-5deg)}}