/* Layout: retro OS shell — a teal CRT desktop with a holographic perspective floor, one beveled grey application window (max 860px) and a taskbar holding course tabs + clock.
   Clash: 1995 bevels, pixel type and system-dialog grammar vs. iridescent foil title bars, LCD readouts and a scanlined AI hologram panel. Single look by design. */
:root{
  --desk:#0A6A6B; --desk-2:#022327; --chrome:#C8CBD0; --chrome-2:#D9DCE0; --hi:#FFFFFF; --lo:#80868F; --dk:#22262C;
  --field:#FFFFFF; --ink:#111418; --ink-2:#4A525C; --sel:#0B2A92; --on-sel:#FFFFFF;
  --neon:#2BF6FF; --neon-2:#FF4FD8; --lcd:#061015; --lcd-ink:#7CFFE9;
  --imp:#D4002A; --notes:#0B44D6; --review:#A85400; --chat:#646C76; --ok:#00845A; --tip:#FFFFE1;
  --foil:linear-gradient(105deg,#8FF3FF 0%,#C4B5FF 22%,#FFB3E6 44%,#FFF1A8 62%,#9DFFD8 80%,#8FF3FF 100%);
  --pixel:"DotGothic16","Noto Sans TC","PingFang TC","Microsoft JhengHei",monospace;
  --body:"Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif;
  --lcdf:"VT323","DotGothic16",ui-monospace,monospace;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --out:inset -1px -1px var(--dk),inset 1px 1px var(--hi),inset -2px -2px var(--lo),inset 2px 2px var(--chrome-2);
  --in:inset 1px 1px var(--lo),inset -1px -1px var(--hi),inset 2px 2px var(--dk),inset -2px -2px var(--chrome-2);
  color-scheme:light;
}
*{box-sizing:border-box}
html{background:var(--desk-2)}
body{margin:0;min-height:100vh;color:var(--ink);font-family:var(--body);font-size:15px;line-height:1.6;
  background:radial-gradient(120% 70% at 50% 0%,var(--desk) 0%,#06474A 45%,var(--desk-2) 100%);background-attachment:fixed;
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-bottom:calc(64px + env(safe-area-inset-bottom,0px))}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--desk)}
.desktop{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.desktop::before{content:"";position:absolute;inset:0;opacity:.18;
  background-image:linear-gradient(45deg,rgba(0,0,0,.35) 25%,transparent 25%,transparent 75%,rgba(0,0,0,.35) 75%),linear-gradient(45deg,rgba(0,0,0,.35) 25%,transparent 25%,transparent 75%,rgba(0,0,0,.35) 75%);
  background-size:4px 4px;background-position:0 0,2px 2px}
.floor{position:absolute;left:-50%;right:-50%;bottom:-10%;height:58%;transform:perspective(420px) rotateX(64deg);transform-origin:50% 100%;
  background-image:linear-gradient(rgba(43,246,255,.55) 2px,transparent 2px),linear-gradient(90deg,rgba(255,79,216,.45) 2px,transparent 2px);background-size:64px 64px;
  -webkit-mask-image:linear-gradient(transparent,#000 70%);mask-image:linear-gradient(transparent,#000 70%);animation:floor 3.2s linear infinite}
@keyframes floor{to{background-position:0 64px,0 0}}
.desktop::after{content:"";position:absolute;left:50%;top:44%;width:min(46vw,420px);aspect-ratio:1;transform:translate(-50%,-50%);border-radius:50%;
  background:var(--foil);background-size:300% 100%;opacity:.16;filter:blur(2px);animation:foil 9s linear infinite;
  -webkit-mask-image:repeating-linear-gradient(transparent 0 6px,#000 6px 14px);mask-image:repeating-linear-gradient(transparent 0 6px,#000 6px 14px)}
@keyframes foil{to{background-position:300% 0}}

/* application window */
.wrap{position:relative;z-index:2;max-width:860px;margin:18px auto 0;background:var(--chrome);box-shadow:var(--out),12px 14px 0 rgba(0,0,0,.35);padding:3px}
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:6}
.titlebar{display:flex;align-items:center;gap:8px;padding:5px 5px 5px 8px;background:var(--foil);background-size:300% 100%;animation:foil 14s linear infinite;color:#0A0C10;min-height:34px;position:relative}
.titlebar::after{content:"";position:absolute;inset:0;pointer-events:none;background:repeating-linear-gradient(0deg,rgba(255,255,255,.18) 0 1px,transparent 1px 3px)}
.tb-ico{width:18px;height:18px;flex:none;background:#0A0C10;box-shadow:inset 0 0 0 2px #0A0C10,inset 0 0 0 4px var(--neon);image-rendering:pixelated}
.brand{font-family:var(--pixel);font-weight:400;font-size:1.05rem;letter-spacing:.06em;white-space:nowrap}
.brand small{font-family:var(--lcdf);font-size:1.05rem;letter-spacing:.08em;opacity:.7;margin-left:2px}
.who{flex:1;min-width:0;font-size:.74rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;text-align:right;opacity:.75;font-family:var(--pixel)}
.tb-btns{display:flex;gap:2px;flex:none}
.tb-btns i{width:22px;height:20px;display:grid;place-items:center;background:var(--chrome);box-shadow:var(--out);font-style:normal;font-family:var(--pixel);font-size:.8rem;line-height:1;color:var(--ink)}
.menubar{display:flex;gap:2px;padding:3px 4px;background:var(--chrome);border-bottom:1px solid var(--lo);box-shadow:0 1px 0 var(--hi);font-family:var(--pixel);font-size:.85rem;overflow-x:auto;scrollbar-width:none}
.menubar::-webkit-scrollbar{display:none}
.menubar button{border:0;background:none;padding:3px 9px;cursor:pointer;white-space:nowrap}
.menubar button:hover{background:var(--sel);color:var(--on-sel)}
.menubar u{text-underline-offset:2px}
#main{background:var(--chrome);padding:0 max(12px,2.5vw) 6px}
.statusbar{display:flex;gap:3px;padding:3px 0 0;font-family:var(--pixel);font-size:.74rem;color:var(--ink-2)}
.statusbar span{box-shadow:var(--in);padding:2px 8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.statusbar span:first-child{flex:1}

button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:1px dotted var(--ink);outline-offset:2px}
h1,h2,h3{text-wrap:balance;margin:0;font-weight:400}
h1{font-family:var(--pixel);font-size:clamp(1.5rem,4.6vw,2.1rem);line-height:1.25;letter-spacing:.03em;color:var(--ink);text-shadow:2px 2px 0 var(--hi),3px 3px 0 rgba(255,79,216,.35)}
h2{font-family:var(--pixel);font-size:1.02rem;letter-spacing:.05em}
.muted{color:var(--ink-2)}
.small{font-size:.85rem}
.mono{font-family:var(--lcdf);font-size:1.08em;letter-spacing:.03em;font-variant-numeric:tabular-nums}
.mark{background:#FFF27A;color:inherit;padding:0 .1em}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;background:var(--chrome);box-shadow:var(--out);padding:7px 16px;min-height:38px;cursor:pointer;font-family:var(--pixel);font-size:.92rem;letter-spacing:.04em;color:var(--ink)}
.btn:hover{background:var(--chrome-2)}
.btn:active{box-shadow:var(--in);padding:8px 15px 6px 17px}
.btn.primary{background:var(--foil);background-size:300% 100%;animation:foil 10s linear infinite;box-shadow:inset -1px -1px var(--dk),inset 1px 1px var(--hi),inset -2px -2px var(--lo),0 0 0 1px var(--dk),0 0 18px -2px rgba(43,246,255,.6);color:#0A0C10;position:relative}
.btn.primary::after{content:"";position:absolute;inset:2px;pointer-events:none;background:repeating-linear-gradient(0deg,rgba(255,255,255,.2) 0 1px,transparent 1px 3px)}
.btn.primary:active{box-shadow:var(--in)}
.btn.danger{color:var(--imp)}
.btn.ghost{background:none;box-shadow:none}
.btn.ghost:hover{box-shadow:var(--out);background:var(--chrome)}
.btn.ghost:active{box-shadow:var(--in)}
.btn[disabled]{color:var(--lo);text-shadow:1px 1px 0 var(--hi);cursor:not-allowed;animation:none;filter:grayscale(1)}
.btn[disabled]:active{box-shadow:var(--out);padding:7px 16px}
.btn.sm{min-height:28px;padding:3px 10px;font-size:.8rem}
.btn.sm:active{padding:4px 9px 2px 11px}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.spacer{flex:1}

/* sections as group boxes */
.page{display:flex;flex-direction:column;gap:26px;padding-top:18px;padding-bottom:10px}
.intro{display:flex;flex-direction:column;gap:12px}
.sec{display:flex;flex-direction:column;gap:10px}
.sec-head{display:flex;align-items:center;gap:8px;padding-bottom:6px;border-bottom:1px solid var(--lo);box-shadow:0 1px 0 var(--hi)}
.sec-head::before{content:"";width:12px;height:12px;flex:none;background:var(--c,var(--sel));box-shadow:inset -2px -2px rgba(0,0,0,.35),inset 2px 2px rgba(255,255,255,.45)}
.sec-head .count{margin-left:auto;font-family:var(--lcdf);font-size:1.1rem;line-height:1;background:var(--lcd);color:var(--lcd-ink);padding:2px 8px 1px;box-shadow:var(--in);text-shadow:0 0 6px rgba(124,255,233,.7)}
.list{display:flex;flex-direction:column;background:var(--field);box-shadow:var(--in);padding:2px}
.list > *:last-child{border-bottom:0}
.empty{background:var(--chrome);box-shadow:var(--out);padding:18px 18px 18px 64px;color:var(--ink-2);display:flex;flex-direction:column;gap:10px;position:relative}
.empty::before{content:"i";position:absolute;left:18px;top:18px;width:32px;height:32px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#7FB2FF,#0B44D6);color:#fff;font-family:Georgia,serif;font-weight:700;font-style:italic;font-size:1.2rem;display:grid;place-items:center;box-shadow:1px 1px 0 var(--dk)}
.empty b{color:var(--ink);font-family:var(--pixel);font-weight:400;font-size:1.05rem}

/* LCD HUD */
.hud{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;background:var(--chrome);padding:8px;box-shadow:var(--out)}
@media (max-width:640px){.hud{grid-template-columns:repeat(2,minmax(0,1fr))}}
.tile{background:var(--lcd);box-shadow:var(--in);padding:10px 12px 9px;display:flex;flex-direction:column;gap:2px;position:relative;overflow:hidden;min-width:0}
.tile::after{content:"";position:absolute;inset:0;pointer-events:none;background:repeating-linear-gradient(0deg,rgba(255,255,255,.04) 0 1px,transparent 1px 3px),radial-gradient(120% 80% at 30% 0%,rgba(124,255,233,.12),transparent 60%)}
.tile .lbl{font-family:var(--pixel);font-size:.68rem;letter-spacing:.06em;color:#4FA59A}
.tile .num{font-family:var(--lcdf);font-size:2.6rem;line-height:.95;color:var(--lcd-ink);text-shadow:0 0 10px rgba(124,255,233,.75)}
.tile .sub{font-size:.72rem;color:#7FA8A2;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-family:var(--pixel)}
.tile.warn .num{color:#FF6B8A;text-shadow:0 0 10px rgba(255,80,120,.8)}
.tile.good .num{color:#7DFF9E;text-shadow:0 0 10px rgba(125,255,158,.7)}
.tile .bgnum{position:absolute;right:6px;top:4px;font-family:var(--lcdf);font-size:.9rem;color:#2D5A55}
.bar{height:8px;margin-top:3px;background:#0B1D21;box-shadow:inset 1px 1px #000;position:relative;overflow:hidden}
.bar i{display:block;height:100%;background:repeating-linear-gradient(90deg,var(--lcd-ink) 0 6px,transparent 6px 8px);box-shadow:0 0 8px rgba(124,255,233,.7)}

/* search */
.search{position:relative}
.search input{width:100%;border:0;background:var(--field);box-shadow:var(--in);padding:9px 12px 9px 38px;min-height:42px}
.search input:focus{outline:1px dotted var(--ink);outline-offset:-5px}
.search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:17px;height:17px;stroke:var(--ink);fill:none}

/* due rows */
.due{display:grid;grid-template-columns:auto 1fr auto;gap:2px 12px;align-items:start;padding:10px 10px;border-bottom:1px dotted #9AA0A8;position:relative}
.due:hover{background:#E8EEFF}
.timeline .due{padding-left:30px}
.timeline .due::before{content:"";position:absolute;left:13px;top:15px;width:8px;height:8px;background:var(--sel);box-shadow:1px 1px 0 var(--dk)}
.timeline .due.hot::before{background:var(--imp);box-shadow:0 0 0 2px #FFD2DB,0 0 10px var(--imp);animation:blinkr 1s steps(2) infinite}
.timeline .due.done::before{background:var(--ok)}
@keyframes blinkr{50%{opacity:.25}}
.due .when{font-family:var(--lcdf);font-size:1.2rem;line-height:1.15;min-width:5.4em;color:var(--sel)}
.due .when .rel{display:block;font-family:var(--pixel);font-size:.7rem;color:var(--ink-2)}
.due .when.soon{color:var(--imp)}
.due .what{min-width:0}
.due .what p{margin:0}
.due .ctx{font-size:.74rem;color:var(--sel);cursor:pointer;background:none;border:0;padding:0;text-align:left;text-decoration:underline;font-family:var(--pixel)}
.check{width:22px;height:22px;border:0;background:var(--field);box-shadow:var(--in);cursor:pointer;display:grid;place-items:center;padding:0;margin-top:2px}
.check svg{width:15px;height:15px;stroke:var(--ink);stroke-width:3.5;fill:none;opacity:0;stroke-linecap:square;stroke-linejoin:miter}
.check[aria-pressed="true"] svg{opacity:1}
.check[aria-pressed="true"]{background:#DFFFEF}
.done p{text-decoration:line-through;color:var(--ink-2)}

/* batch rows: list-view selection */
.batch{display:grid;grid-template-columns:1fr auto;gap:2px 12px;padding:10px 10px 10px 36px;border:0;border-bottom:1px dotted #9AA0A8;cursor:pointer;background:none;text-align:left;width:100%;position:relative}
.batch::before{content:"";position:absolute;left:10px;top:12px;width:16px;height:13px;background:linear-gradient(#FFE27A,#E7B53A);box-shadow:inset -1px -1px #9C7414,inset 1px 1px #FFF5C4;clip-path:polygon(0 15%,40% 15%,50% 0,100% 0,100% 100%,0 100%)}
.batch:hover,.batch:focus-visible{background:var(--sel);color:var(--on-sel);outline:none}
.batch:hover .bm,.batch:focus-visible .bm{color:#C9D4FF}
.bt{font-weight:700;min-width:0}
.bm{grid-column:1/-1;font-size:.76rem;color:var(--ink-2);font-family:var(--pixel)}
.pill{display:inline-flex;align-items:center;gap:6px;font-family:var(--pixel);font-size:.72rem;padding:2px 8px;background:var(--chrome);box-shadow:var(--out);white-space:nowrap;height:fit-content;color:var(--ink)}
.pill::before{content:"";width:8px;height:8px;background:currentColor;box-shadow:inset -1px -1px rgba(0,0,0,.3)}
.pill.completed::before{background:var(--ok)} .pill.failed::before{background:var(--imp)} .pill.draft::before{background:var(--lo)} .pill.example::before{background:#E7B53A}
.pill.processing::before{background:var(--neon);box-shadow:0 0 8px var(--neon);animation:blinkr .8s steps(2) infinite}

/* form */
.field{display:flex;flex-direction:column;gap:5px}
.field label{font-family:var(--pixel);font-size:.85rem}
.field input,.field textarea{border:0;background:var(--field);box-shadow:var(--in);padding:9px 11px;width:100%}
.field input:focus,.field textarea:focus{outline:1px dotted var(--ink);outline-offset:-5px}
.field textarea{min-height:170px;resize:vertical;line-height:1.6;font-size:.95rem}
.two{display:grid;grid-template-columns:1fr 11em;gap:12px}
@media (max-width:520px){.two{grid-template-columns:1fr}}
.drop{display:flex;flex-direction:column;align-items:center;gap:6px;padding:22px 14px;text-align:center;cursor:pointer;background:var(--field);box-shadow:var(--in);outline:2px dashed #9AA0A8;outline-offset:-10px;position:relative}
.drop:hover,.drop.over{background:#EAFDFF;outline-color:var(--sel)}
.drop .ico{width:46px;height:40px;display:grid;place-items:center;background:linear-gradient(#FFE27A,#E7B53A);box-shadow:inset -2px -2px #9C7414,inset 2px 2px #FFF5C4;clip-path:polygon(0 15%,40% 15%,50% 0,100% 0,100% 100%,0 100%);color:#5A3D00}
.drop .ico svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:2.5;margin-top:5px}
.drop input{position:absolute;width:1px;height:1px;opacity:0}
.drop b{font-family:var(--pixel);font-weight:400;font-size:1.02rem;color:var(--sel)}
.files{display:flex;flex-direction:column;gap:4px;background:var(--field);box-shadow:var(--in);padding:4px}
.file{display:grid;grid-template-columns:48px 1fr auto;gap:10px;align-items:center;padding:5px;border-bottom:1px dotted #9AA0A8}
.file:last-child{border-bottom:0}
.thumb{width:48px;height:48px;background:var(--chrome);box-shadow:var(--in);display:grid;place-items:center;overflow:hidden;font-family:var(--lcdf);font-size:1rem;color:var(--sel)}
.thumb img{width:100%;height:100%;object-fit:cover;padding:2px}
.file .nm{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500}
.file .st{font-size:.74rem;color:var(--ink-2);font-family:var(--pixel)}
.file .st.err{color:var(--imp)}
.file .ops{display:flex;gap:2px}
.icon{width:28px;height:26px;border:0;background:var(--chrome);box-shadow:var(--out);cursor:pointer;display:grid;place-items:center;color:var(--ink)}
.icon:active{box-shadow:var(--in)}
.icon[disabled]{color:var(--lo);cursor:default}
.icon svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2.5}
.note{font-size:.82rem;color:var(--ink-2);margin:0;padding:6px 10px;background:var(--tip);border:1px solid var(--dk)}
.err-box{display:block;padding:12px 14px 12px 52px;background:var(--chrome);box-shadow:var(--out);color:var(--ink);position:relative}
.err-box::before{content:"✕";position:absolute;left:12px;top:10px;width:28px;height:28px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#FF8A8A,#C40018);color:#fff;font-weight:700;display:grid;place-items:center;font-size:.9rem;box-shadow:1px 1px 0 var(--dk)}

/* batch detail */
.back{align-self:flex-start}
.summary{position:relative;background:#04121A;color:#BFFFF6;padding:16px 18px 18px;box-shadow:var(--in),inset 0 0 40px rgba(43,246,255,.15);display:flex;flex-direction:column;gap:8px;overflow:hidden}
.summary::before{content:"";position:absolute;inset:0;pointer-events:none;background:repeating-linear-gradient(0deg,rgba(43,246,255,.07) 0 1px,transparent 1px 3px)}
.summary::after{content:"";position:absolute;left:0;right:0;height:60px;top:-60px;pointer-events:none;background:linear-gradient(transparent,rgba(43,246,255,.14),transparent);animation:scanv 4.5s linear infinite}
@keyframes scanv{to{top:110%}}
.summary .lbl{font-family:var(--pixel);font-size:.74rem;letter-spacing:.08em;color:var(--neon-2);text-shadow:0 0 8px rgba(255,79,216,.7)}
.summary p{margin:0;font-size:1.06rem;line-height:1.85;text-shadow:0 0 6px rgba(43,246,255,.45);position:relative}
.progress{display:flex;flex-direction:column;gap:10px;background:var(--chrome);box-shadow:var(--out);padding:14px 16px}
.xpbar{height:22px;background:var(--field);box-shadow:var(--in);padding:3px;overflow:hidden;position:relative}
.xpbar i{position:absolute;top:3px;bottom:3px;left:3px;width:40%;background:repeating-linear-gradient(90deg,var(--sel) 0 10px,transparent 10px 13px);animation:xp 1.8s steps(14) infinite}
@keyframes xp{from{transform:translateX(-100%)}to{transform:translateX(260%)}}
.plog{display:flex;flex-direction:column;gap:1px;min-width:0;background:var(--lcd);color:var(--lcd-ink);box-shadow:var(--in);padding:8px 10px}
.plog b{font-family:var(--pixel);font-weight:400;color:#fff}
.plog code{font-family:var(--lcdf);font-size:1.02rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;text-shadow:0 0 6px rgba(124,255,233,.6)}
.plog code.muted{color:#6FA39B;text-shadow:none}
.dots::after{content:"";animation:dots 1.4s steps(4) infinite}
@keyframes dots{0%{content:""}25%{content:"."}50%{content:".."}75%{content:"..."}}
.spin{width:22px;height:22px;flex:none;background:conic-gradient(var(--sel) 0 25%,transparent 0 50%,var(--sel) 0 75%,transparent 0);animation:sp 1s steps(8) infinite;box-shadow:0 0 0 2px var(--chrome),0 0 0 3px var(--dk)}
@keyframes sp{to{transform:rotate(360deg)}}
.cat-imp{--c:var(--imp)} .cat-notes{--c:var(--notes)} .cat-review{--c:var(--review)} .cat-chat{--c:var(--chat)}
[class*="cat-"] .sec-head h2{color:var(--c)}
.sec-desc{font-size:.8rem;color:var(--ink-2);margin:-4px 0 0}
.item{display:grid;grid-template-columns:auto 1fr;gap:4px 10px;padding:11px 10px;border-bottom:1px dotted #9AA0A8;position:relative}
.item:hover{background:#F1F4FF}
.item.flash{background:#FFF27A;transition:background 1.5s}
.item .gut{width:22px}
.item .bd{min-width:0;display:flex;flex-direction:column;gap:6px}
.item .stmt{margin:0}
.cat-imp .item .stmt{font-weight:500}
.ihead{display:flex;flex-wrap:wrap;gap:6px 8px;align-items:center;font-size:.76rem}
.type{font-family:var(--pixel);padding:1px 7px;color:#fff;background:var(--c,var(--imp));box-shadow:inset -1px -1px rgba(0,0,0,.35),inset 1px 1px rgba(255,255,255,.35)}
.dt{font-family:var(--lcdf);font-size:1.05rem;line-height:1.2;background:var(--lcd);color:var(--lcd-ink);padding:0 7px;text-shadow:0 0 6px rgba(124,255,233,.7)}
.basis{color:var(--ink-2);font-family:var(--pixel);font-size:.7rem}
.meta{font-size:.8rem;color:var(--ink-2);display:flex;flex-wrap:wrap;gap:4px 14px}
.unc{font-size:.8rem;color:var(--review)}
.ifoot{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.src{font-family:var(--pixel);font-size:.72rem;border:0;background:var(--chrome);box-shadow:var(--out);padding:2px 8px;cursor:pointer;color:var(--ink);max-width:14em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.src:active{box-shadow:var(--in)}
.ifoot select{border:0;background:var(--field);box-shadow:var(--in);font-size:.76rem;padding:3px 4px;font-family:var(--pixel)}
.edit-area{width:100%;border:0;background:var(--field);box-shadow:var(--in);padding:8px;min-height:70px}
.flagline{font-size:.78rem;color:var(--ink-2);display:flex;gap:8px;align-items:center;flex-wrap:wrap;font-family:var(--pixel)}
.srcs{display:flex;flex-wrap:wrap;gap:6px}

/* dialog */
.sheet-bg{position:fixed;inset:0;background:rgba(2,20,22,.45);z-index:20;display:flex;align-items:center;justify-content:center;padding:16px}
.sheet{width:min(640px,100%);max-height:84vh;overflow:auto;background:var(--chrome);box-shadow:var(--out),10px 12px 0 rgba(0,0,0,.4);padding:0 14px 14px;display:flex;flex-direction:column;gap:12px;animation:pop .18s steps(3)}
.sheet::before{content:"拾訊課堂";position:sticky;top:0;z-index:1;display:block;margin:3px -11px 4px;padding:5px 10px;background:var(--foil);background-size:300% 100%;animation:foil 12s linear infinite;font-family:var(--pixel);font-size:.9rem;color:#0A0C10}
@keyframes pop{from{transform:scale(.92);opacity:.3}}
.srctext{white-space:pre-wrap;word-break:break-word;font-size:.88rem;background:var(--field);padding:10px 12px;max-height:50vh;overflow:auto;box-shadow:var(--in)}
.srctext mark{background:#FFF27A;color:var(--ink);outline:1px dotted var(--ink)}
.srcimg{max-width:100%;box-shadow:var(--in);padding:3px;background:var(--field)}
.sheet input[type=text]{border:0;background:var(--field);box-shadow:var(--in);padding:9px 11px;width:100%}

/* taskbar */
.taskbar{position:fixed;left:0;right:0;bottom:0;z-index:15;display:flex;align-items:center;gap:4px;background:var(--chrome);box-shadow:inset 0 1px var(--chrome-2),inset 0 2px var(--hi),0 -1px 0 var(--lo);
  padding:4px max(6px,env(safe-area-inset-right,0px)) calc(4px + env(safe-area-inset-bottom,0px)) max(6px,env(safe-area-inset-left,0px))}
.start{flex:none;display:flex;align-items:center;gap:6px;border:0;background:var(--chrome);box-shadow:var(--out);padding:5px 12px;min-height:34px;font-family:var(--pixel);cursor:pointer;font-size:.92rem}
.start:active{box-shadow:var(--in)}
.start i{width:16px;height:16px;background:var(--foil);background-size:300% 100%;animation:foil 6s linear infinite;box-shadow:inset 0 0 0 1px #0A0C10}
.tabs{flex:1;display:flex;gap:3px;overflow-x:auto;scrollbar-width:none;min-width:0}
.tabs::-webkit-scrollbar{display:none}
.tab{flex:0 0 auto;max-width:12em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;border:0;background:var(--chrome);box-shadow:var(--out);padding:5px 12px;min-height:34px;cursor:pointer;font-family:var(--pixel);font-size:.86rem;text-align:left}
.tab[aria-current="true"]{box-shadow:var(--in);background:repeating-conic-gradient(var(--chrome-2) 0 25%,#E9EBEE 0 50%) 0 0/4px 4px;font-weight:400}
.tab.add{color:var(--sel)}
.tray{flex:none;display:flex;align-items:center;gap:8px;box-shadow:var(--in);padding:4px 10px;min-height:30px}
.tray .led{width:8px;height:8px;background:var(--ok);box-shadow:0 0 6px #3CFF9E}
.clock{font-family:var(--lcdf);font-size:1.15rem;letter-spacing:.04em;line-height:1}
@media (max-width:460px){.start span{display:none}.tray .led{display:none}}

.toast{position:fixed;right:max(12px,env(safe-area-inset-right,0px));bottom:calc(58px + env(safe-area-inset-bottom,0px));z-index:30;max-width:min(360px,calc(100% - 24px));
  background:var(--tip);color:var(--ink);border:1px solid var(--dk);padding:10px 14px;font-size:.88rem;box-shadow:3px 3px 0 rgba(0,0,0,.35)}
.toast::after{content:"";position:absolute;right:24px;bottom:-9px;width:14px;height:9px;background:var(--tip);clip-path:polygon(0 0,100% 0,100% 100%);border-right:1px solid var(--dk)}
.ex-banner{background:var(--tip);border:1px solid var(--dk);padding:8px 12px;font-size:.84rem}

/* ask, quiz cards, course chips */
.askrow{display:flex;gap:8px}
.askrow input{flex:1;min-width:0;border:0;background:var(--field);box-shadow:var(--in);padding:9px 11px;min-height:40px}
.askrow input:focus{outline:1px dotted var(--ink);outline-offset:-5px}
.answer p{white-space:pre-wrap;font-size:.98rem}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,230px),1fr));gap:12px}
.card{display:flex;flex-direction:column;gap:8px;text-align:left;border:0;cursor:pointer;background:var(--field);box-shadow:var(--out),4px 5px 0 rgba(0,0,0,.18);padding:0 12px 12px;min-height:132px;font:inherit;color:var(--ink);position:relative;transition:transform .12s}
.card:hover{transform:translate(-1px,-1px)}
.card:active{transform:translate(1px,1px);box-shadow:var(--in)}
.card .ctag{margin:3px -9px 0;padding:2px 8px;background:var(--foil);background-size:300% 100%;font-family:var(--pixel);font-size:.78rem;color:#0A0C10}
.card .cq{font-weight:500;line-height:1.55}
.card .chint{margin-top:auto;font-family:var(--pixel);font-size:.72rem;color:var(--ink-2)}
.card .ca{margin-top:auto;background:var(--lcd);color:var(--lcd-ink);padding:8px 10px;font-size:.88rem;line-height:1.55;box-shadow:var(--in);text-shadow:0 0 6px rgba(124,255,233,.45)}
.card.flip{background:#F4FFFC}
.cchip{display:inline-block;font-family:var(--pixel);font-size:.7rem;background:var(--sel);color:#fff;padding:0 6px;margin-right:6px;vertical-align:1px}
.course-row::before{background:linear-gradient(#9BE7FF,#3BA9D9);box-shadow:inset -1px -1px #1E6E92,inset 1px 1px #DDF7FF}
.hint{font-family:var(--pixel);font-size:.8rem;color:var(--ink-2)}
.menubar[hidden]{display:none}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}

/* ---------- app-only additions ---------- */
*{-webkit-tap-highlight-color:transparent}
body{padding-top:env(safe-area-inset-top,0px)}
.login{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:18px;align-items:start}
@media (max-width:720px){.login{grid-template-columns:1fr}}
.login .pitch{display:flex;flex-direction:column;gap:12px}
.login .pitch ul{margin:0;padding-left:1.2em;display:flex;flex-direction:column;gap:4px}
.panel{background:var(--chrome);box-shadow:var(--out);padding:16px;display:flex;flex-direction:column;gap:12px}
.panel h2{font-size:1.05rem}
.gbtn{width:100%;justify-content:flex-start;gap:10px}
.gbtn svg{width:18px;height:18px;flex:none}
.or{display:flex;align-items:center;gap:8px;font-family:var(--pixel);font-size:.78rem;color:var(--ink-2)}
.or::before,.or::after{content:"";flex:1;border-top:1px solid var(--lo);box-shadow:0 1px 0 var(--hi)}
.inp{border:0;background:var(--field);box-shadow:var(--in);padding:9px 11px;width:100%;min-height:40px}
.inp:focus{outline:1px dotted var(--ink);outline-offset:-5px}
.fine{font-size:.74rem;color:var(--ink-2);margin:0}
.fine a{color:var(--sel)}
.linkbox{display:flex;gap:6px}
.linkbox input{flex:1;min-width:0;font-family:var(--mono);font-size:.8rem}
.members{display:flex;flex-direction:column;background:var(--field);box-shadow:var(--in);padding:2px;max-height:40vh;overflow:auto}
.member{display:flex;align-items:center;gap:8px;padding:8px 10px;border-bottom:1px dotted #9AA0A8}
.member:last-child{border-bottom:0}
.member .nm{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.member select{border:0;background:var(--field);box-shadow:var(--in);font-family:var(--pixel);font-size:.78rem;padding:3px}
.role{font-family:var(--pixel);font-size:.72rem;padding:1px 6px;background:var(--chrome);box-shadow:var(--out)}
.meter{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}
.meter .tile .num{font-size:2rem}
.bigmsg{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.install-tip{background:var(--tip);border:1px solid var(--dk);padding:10px 12px;font-size:.86rem}

/* ---------- quality pass ---------- */
html{-webkit-text-size-adjust:100%;text-rendering:optimizeLegibility}
body{-webkit-font-smoothing:antialiased}
.wrap{box-shadow:var(--out),0 0 0 1px rgba(0,0,0,.55),14px 18px 0 rgba(0,0,0,.32),0 30px 80px -20px rgba(43,246,255,.25)}
.wrap::after{content:"";position:absolute;inset:3px;pointer-events:none;background:linear-gradient(115deg,rgba(255,255,255,.10),transparent 22%,transparent 78%,rgba(255,255,255,.05));mix-blend-mode:soft-light}
.page.enter{animation:winopen .22s steps(4) both}
@keyframes winopen{from{opacity:.25;transform:scale(.985)}}
.summary p::after{content:"▌";margin-left:2px;color:var(--neon);animation:caret 1s steps(2) infinite}
@keyframes caret{50%{opacity:0}}
.list{transition:box-shadow .2s}
.item{transition:background .15s}
.item .stmt{font-size:1rem;line-height:1.7}
.ihead{min-height:22px}
.btn{transition:background .12s,filter .12s;touch-action:manipulation;user-select:none;-webkit-user-select:none}
.btn.primary:hover{filter:saturate(1.25) brightness(1.04)}
.btn:focus-visible,.tab:focus-visible,.check:focus-visible,.card:focus-visible{outline:2px dotted var(--ink);outline-offset:-6px}
.check{transition:transform .08s}
.check:active{transform:scale(.9)}
.check[aria-pressed="true"]{animation:pop .25s steps(3)}
.tile .num{font-variant-numeric:tabular-nums}
.hud .tile{transition:transform .12s}
.hud .tile:hover{transform:translateY(-1px)}
img{content-visibility:auto}

/* login hero */
.hero{display:flex;align-items:center;gap:16px}
.hero-icon{width:76px;height:76px;flex:none;image-rendering:auto;filter:drop-shadow(4px 5px 0 rgba(0,0,0,.25))}
.feat{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;background:var(--chrome);box-shadow:var(--out);padding:8px}
@media (max-width:520px){.feat{grid-template-columns:1fr}}
.feat .tile .num{font-size:1.5rem;line-height:1.2}
.feat .tile .sub{white-space:normal}
.panel{position:relative}
.panel::before{content:"LOGIN.EXE";display:block;margin:-13px -13px 4px;padding:4px 10px;background:var(--foil);background-size:300% 100%;animation:foil 12s linear infinite;font-family:var(--pixel);font-size:.82rem;color:#0A0C10}

/* skeleton */
.skel{display:flex;flex-direction:column;gap:10px}
.sk{height:14px;background:linear-gradient(90deg,#B9BDC3 0 30%,#D9DCE0 50%,#B9BDC3 70%) 0 0/300% 100%;animation:shimmer 1.2s linear infinite;box-shadow:var(--in)}
.sk.h{height:30px;width:45%}.sk.w60{width:60%}.sk.w80{width:80%}.sk.block{height:96px}
@keyframes shimmer{to{background-position:-300% 0}}

/* empty state with brand mark */
.empty.brand{padding-left:96px}
.empty.brand::before{content:"";width:60px;height:60px;left:18px;top:16px;border-radius:0;background:url(icons/icon.svg) center/contain no-repeat;box-shadow:none}

/* phone: app-like full-height window */
@media (max-width:640px){
  body{padding-left:0;padding-right:0}
  .wrap{margin:0;min-height:calc(100vh - 52px - env(safe-area-inset-bottom,0px));min-height:calc(100dvh - 52px - env(safe-area-inset-bottom,0px));box-shadow:var(--out);display:flex;flex-direction:column}
  #main{flex:1;padding:0 14px 8px}
  .statusbar span:last-child{display:none}
  h1{font-size:1.45rem}
  .summary p{font-size:1rem}
  .item{padding:11px 8px}
  .due{padding:10px 8px}
  .timeline .due{padding-left:28px}
}
@media (display-mode: standalone){
  body{padding-left:0;padding-right:0}
  .wrap{margin:0 auto;max-width:none;min-height:calc(100dvh - 52px - env(safe-area-inset-bottom,0px));display:flex;flex-direction:column}
  #main{flex:1;max-width:900px;width:100%;margin:0 auto}
  .statusbar{max-width:none}
}
.desktop{contain:strict}
html,body{overflow-x:clip}