/* 學習平台：品牌色由 ac_brands 設定（--brand）；狀態色取自核心床彈簧顏色：紅＝未通過、藍＝進行中、綠＝通過 */
:root{--brand:#5A3E2B;--brand-ink:#fff;--bg:#F2F2EF;--surface:#fff;--ink:#1F1A17;--muted:#6B6560;--line:#E1DED8;--soft:#EAE8E3;
  --ok:#2E7D5B;--no:#C2412D;--pend:#2F6FAE;--warn:#B8860B;--r:10px;--f:"Manrope","PingFang TC","Noto Sans TC","Microsoft JhengHei",system-ui,sans-serif}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--f);-webkit-font-smoothing:antialiased}
a{color:var(--brand)}h1,h2,h3,h4{line-height:1.25;margin:0 0 .5em;font-weight:700;letter-spacing:-.01em}
h1{font-size:1.6rem}h1 small,h2 small{font-weight:500;font-size:.8rem;color:var(--muted);margin-left:.4em}h2{font-size:1.1rem}
p{margin:.4em 0}.muted,.sub{color:var(--muted);font-size:.9rem}.sub{margin:-.2em 0 1em}.fine{font-size:.82rem;color:var(--muted)}
:focus-visible{outline:3px solid color-mix(in srgb,var(--brand) 55%,#fff);outline-offset:2px;border-radius:4px}
.loading{padding:40px 16px;color:var(--muted);text-align:center}
/* 版面 */
.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px;background:var(--surface);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800;font-size:1.05rem}.brand img{height:30px;width:auto}
.me{position:relative}.me summary{list-style:none;width:36px;height:36px;border-radius:50%;background:var(--brand);color:var(--brand-ink);display:grid;place-items:center;font-weight:700;cursor:pointer}.me summary::-webkit-details-marker{display:none}
.me .menu{position:absolute;right:0;top:44px;min-width:230px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:0 12px 32px rgba(31,26,23,.14);padding:6px;display:flex;flex-direction:column}
.me .menu a,.me .menu button{padding:10px 12px;border-radius:6px;text-decoration:none;color:var(--ink);background:none;border:0;font:inherit;text-align:left;cursor:pointer}.me .menu a:hover,.me .menu button:hover{background:var(--soft)}
.me .who{padding:8px 12px 10px;border-bottom:1px solid var(--line);margin:0 0 4px;display:flex;flex-direction:column;font-size:.85rem;color:var(--muted)}.me .who b{color:var(--ink);font-size:1rem}
.body{display:flex;min-height:calc(100vh - 57px)}main{flex:1;min-width:0;max-width:880px;margin:0 auto;padding:20px 16px 110px}
.nav{position:fixed;bottom:0;left:0;right:0;z-index:15;display:flex;background:var(--surface);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
.nav a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 0 7px;text-decoration:none;color:var(--muted);font-size:.72rem;font-weight:600}
.nav svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.nav a[aria-current]{color:var(--brand)}
@media (min-width:900px){.nav{position:sticky;top:57px;flex-direction:column;width:200px;height:calc(100vh - 57px);border:0;border-right:1px solid var(--line);padding:16px 10px;gap:2px}
  .nav a{flex:none;flex-direction:row;gap:12px;padding:10px 12px;border-radius:8px;font-size:.95rem}.nav a[aria-current]{background:var(--soft)}main{padding:28px 32px 60px}}
/* 元件 */
.card,section.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px;margin:0 0 14px}
main>section:not(.card){margin:0 0 22px}
.ch2{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:8px}.ch2 h2{margin:0}
.big{font-size:1.9rem;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}.big small{font-size:.85rem;font-weight:600;color:var(--muted);margin-left:2px}.big.sm{font-size:1.35rem}
.big.ok,b.ok{color:var(--ok)}.big.no,b.no{color:var(--no)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:42px;padding:8px 16px;border-radius:8px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font:600 .95rem var(--f);text-decoration:none;cursor:pointer;white-space:nowrap}
.btn:hover{border-color:color-mix(in srgb,var(--brand) 40%,var(--line))}.btn.pri{background:var(--brand);border-color:var(--brand);color:var(--brand-ink)}.btn.pri:hover{filter:brightness(1.08)}
.btn.ghost{background:transparent}.btn.danger{background:var(--no);border-color:var(--no);color:#fff}.btn.sm{min-height:34px;padding:4px 12px;font-size:.85rem}.btn.big{min-height:52px;padding:12px 22px;font-size:1.05rem;width:100%}.btn:disabled{opacity:.55;cursor:wait}
.lnk{background:none;border:0;padding:0;color:var(--brand);font:inherit;font-weight:600;cursor:pointer;text-decoration:underline;text-underline-offset:3px;display:inline-block;margin-top:10px}
.row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:8px}.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.h1row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:10px}.h1row h1{margin:0}
.back{display:inline-block;margin-bottom:10px;font-size:.9rem;font-weight:600;text-decoration:none}.back::before{content:"‹ "}
.empty{text-align:center;padding:30px 16px;color:var(--muted);background:var(--surface);border:1px dashed var(--line);border-radius:var(--r)}.empty .btn{margin-top:8px}
.note{background:var(--soft);border-radius:8px;padding:8px 12px;font-size:.9rem}.note.no{background:color-mix(in srgb,var(--no) 10%,#fff);color:#8a2a1c}
.st{font-size:.78rem;font-weight:700;padding:2px 9px;border-radius:99px;background:var(--soft);color:var(--muted);white-space:nowrap}.st.ok{background:color-mix(in srgb,var(--ok) 13%,#fff);color:var(--ok)}.st.no{background:color-mix(in srgb,var(--no) 12%,#fff);color:var(--no)}.st.pend{background:color-mix(in srgb,var(--pend) 12%,#fff);color:var(--pend)}
.seg2{display:inline-flex;background:var(--soft);border-radius:9px;padding:3px;margin-bottom:16px}.seg2 a{padding:7px 16px;border-radius:7px;text-decoration:none;color:var(--muted);font-weight:600;font-size:.9rem}.seg2 a[aria-current]{background:var(--surface);color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.08)}
.chips{display:flex;gap:6px;flex-wrap:wrap;margin:0 0 12px}.chips a{padding:5px 12px;border-radius:99px;border:1px solid var(--line);background:var(--surface);text-decoration:none;color:var(--muted);font-size:.85rem;font-weight:600}.chips a[aria-current]{background:var(--ink);border-color:var(--ink);color:#fff}
label{display:flex;flex-direction:column;gap:4px;font-size:.88rem;font-weight:600;color:var(--muted);margin:0 0 10px}
input,select,textarea{font:400 1rem var(--f);color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:9px 11px;width:100%}textarea{resize:vertical;line-height:1.55}
label.ck{flex-direction:row;align-items:center;gap:8px;color:var(--ink);font-weight:500}label.ck input,fieldset input{width:auto}
fieldset{border:1px solid var(--line);border-radius:8px;padding:8px 12px;margin:0 0 10px}fieldset legend{font-size:.85rem;font-weight:600;color:var(--muted);padding:0 4px}
.seg3{display:flex;flex-wrap:wrap;gap:4px 16px}.seg3 label{flex-direction:row;align-items:center;gap:6px;margin:4px 0;color:var(--ink);font-weight:500}
.search{display:flex;gap:8px;margin:0 0 14px}.filters{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr) auto;gap:8px;margin-bottom:14px}
#toast{position:fixed;left:50%;bottom:86px;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:var(--ink);color:#fff;padding:10px 18px;border-radius:99px;font-size:.92rem;transition:.25s;z-index:50;max-width:calc(100% - 32px)}#toast.show{opacity:1;transform:translate(-50%,0)}#toast.bad{background:var(--no)}
dialog.dlg{border:0;border-radius:14px;padding:0;width:min(520px,calc(100% - 24px));max-height:calc(100vh - 40px);box-shadow:0 24px 60px rgba(0,0,0,.25)}dialog.dlg.wide{width:min(720px,calc(100% - 24px))}dialog::backdrop{background:rgba(31,26,23,.45)}
dialog form{display:flex;flex-direction:column;max-height:calc(100vh - 40px)}dialog h3{padding:18px 20px 0;margin:0 0 10px}.dlgb{padding:0 20px;overflow:auto}.dlgf{display:flex;justify-content:flex-end;gap:8px;padding:14px 20px;border-top:1px solid var(--line)}
/* 登入 */
.login{max-width:420px;margin:8vh auto 0;text-align:center}.login h1{font-size:2rem}.login .lead{color:var(--muted);margin-bottom:24px}.login .alt{margin-top:18px;text-align:left}.login .alt summary{cursor:pointer;color:var(--muted);text-align:center;font-weight:600}.login form{margin-top:12px}.login .err{color:var(--no);min-height:1.4em}
/* 首頁 */
.hi{font-size:1.25rem;font-weight:700;margin-bottom:12px}
.next{display:grid;gap:4px;padding:18px;border-radius:12px;background:var(--brand);color:var(--brand-ink);text-decoration:none;margin-bottom:10px}.next .nl{font-size:.8rem;font-weight:700;opacity:.75}.next b{font-size:1.25rem;line-height:1.35}.next span{opacity:.9}
.next .btn{justify-self:start;margin-top:8px;background:var(--brand-ink);color:var(--brand);border-color:transparent;opacity:1}
.next2{display:grid;gap:2px;padding:12px 16px;border-radius:10px;background:var(--surface);border:1px solid var(--line);text-decoration:none;color:var(--ink);margin-bottom:8px}.next2 span{font-size:.88rem;color:var(--muted)}.next2:last-of-type{margin-bottom:16px}
/* 彈簧軌：每段寬度＝時數比例；未完成的部分是彈簧線圈紋 */
.rail{display:flex;gap:4px;margin:8px 0 4px}.rail .seg{position:relative;height:30px;border-radius:5px;overflow:hidden;background:repeating-linear-gradient(90deg,var(--soft) 0 3px,#D9D5CE 3px 4px)}
.rail .fill{position:absolute;inset:0 auto 0 0;background:var(--brand)}.rail b{position:absolute;left:6px;top:50%;transform:translateY(-50%);font-size:.75rem;color:#fff;mix-blend-mode:difference}
.rail.sm{gap:2px;margin:4px 0 0}.rail.sm .seg{height:8px;border-radius:3px;background:var(--soft)}
.mods{list-style:none;padding:0;margin:10px 0 0;display:grid;grid-template-columns:repeat(auto-fit,minmax(105px,1fr));gap:6px}.mods a{display:grid;grid-template-columns:auto 1fr;gap:0 8px;padding:8px 10px;border-radius:8px;background:var(--bg);text-decoration:none;color:var(--ink)}
.mods b{grid-row:span 2;font-size:1.1rem}.mods span{font-size:.85rem}.mods em{font-style:normal;font-size:.85rem;color:var(--muted);font-variant-numeric:tabular-nums}.mods i{font-style:normal;color:var(--pend);margin-left:4px}
.scores{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px}.scores li{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 8px;padding:10px 12px;background:var(--bg);border-radius:8px}
.scores li span{flex:1;font-weight:600}.scores li b{font-size:1.2rem;font-variant-numeric:tabular-nums}.scores li small{flex-basis:100%;color:var(--muted);font-size:.78rem}
.cgrid{display:grid;grid-template-columns:auto repeat(var(--n),1fr);gap:6px;align-items:center}.cgrid .ch{font-size:.8rem;color:var(--muted);text-align:center;font-weight:600}.cgrid .rh{font-weight:600;font-size:.9rem;padding-right:6px}
.cgrid .cell{height:40px;border-radius:8px;border:1px dashed var(--line);display:grid;place-items:center;font-weight:800;color:#fff}.cgrid .cell.on{background:var(--ok);border:0}
/* 清單 */
.items{list-style:none;padding:0;margin:0}.items li{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:6px 12px;padding:10px 0;border-top:1px solid var(--line)}.items li:first-child{border-top:0}
.items li>div:first-child{display:flex;flex-direction:column}.items li.done b::after{content:" ✓";color:var(--ok)}.items .ls{flex-basis:100%;display:flex;flex-wrap:wrap;gap:6px}.items .ls a{font-size:.85rem;padding:3px 10px;border-radius:99px;background:var(--soft);text-decoration:none}
.items .bar{flex-basis:100%;height:6px;background:var(--soft);border-radius:3px;overflow:hidden}.items .bar i{display:block;height:100%;background:var(--brand)}
.subs{list-style:none;padding:0;margin:0;display:grid;gap:10px}.subs li{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:12px 14px}
.subs .sh{display:flex;justify-content:space-between;gap:10px;align-items:baseline;flex-wrap:wrap}.subs .nt{white-space:pre-wrap;margin:6px 0 0;font-size:.95rem}
details>summary{cursor:pointer;font-weight:600;color:var(--muted);padding:6px 0}.card details>summary{display:flex;justify-content:space-between;gap:10px}.card details>summary b{color:var(--ink)}
.hist{list-style:none;padding:0;margin:4px 0 0;font-size:.9rem}.hist li{padding:5px 0;border-top:1px solid var(--line)}
.stl{list-style:none;padding:0;margin:0;display:grid;gap:8px}.stl a{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:12px;align-items:center;padding:12px 14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);text-decoration:none;color:var(--ink)}
.stl a>div:first-child{display:flex;flex-direction:column}.stp span{font-size:.85rem;font-variant-numeric:tabular-nums}.stp i{font-style:normal;color:var(--pend);margin-left:6px}
.tbl{list-style:none;padding:0;margin:0}.tbl li{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr) minmax(0,1.3fr) auto;gap:10px;align-items:center;padding:9px 0;border-top:1px solid var(--line);font-size:.92rem}.tbl li.off{opacity:.55}
.tbl span{color:var(--muted);overflow:hidden;text-overflow:ellipsis}
.certs{list-style:none;padding:0;margin:12px 0 0}.certs li{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 0;border-top:1px solid var(--line)}.certs li>div{display:flex;flex-direction:column;gap:2px}.certs li.revoked b{text-decoration:line-through;color:var(--muted)}
.glist{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px}.gcard{display:flex;flex-direction:column;gap:2px;padding:18px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line);text-decoration:none;color:var(--ink)}.gcard b{font-size:1.15rem}.gcard span,.gcard small{color:var(--muted)}.gcard.off{background:transparent;border-style:dashed}
.exl{list-style:none;padding:0;margin:0;columns:2 260px;column-gap:16px}.exl li{break-inside:avoid}.exl a{display:flex;flex-direction:column;padding:8px 0;border-top:1px solid var(--line);text-decoration:none;color:var(--ink)}.exl a span{font-size:.82rem;color:var(--muted)}
.exams{list-style:none;padding:0;margin:0}.exams .btn{margin-top:6px}
.prods{list-style:none;padding:0;margin:0}
/* 動作、課文 */
.crumb{font-size:.85rem;color:var(--muted);margin:0 0 4px}.en{color:var(--muted);margin-top:-.4em}
.ex section,.lesson .prose{margin-top:18px}.ex h3{font-size:1rem;border-bottom:1px solid var(--line);padding-bottom:6px}
.kv{display:grid;grid-template-columns:max-content 1fr;gap:6px 14px;margin:0}.kv dt{font-weight:700}.kv dd{margin:0}.kv small,.cues small{display:block;color:var(--muted);font-size:.85rem}
.phases{padding-left:1.3em}.phases li{margin:6px 0}.br{display:inline-block;font-size:.75rem;font-weight:700;padding:1px 8px;border-radius:99px;margin-right:6px;background:var(--soft)}.br.in{background:color-mix(in srgb,var(--pend) 14%,#fff);color:var(--pend)}.br.ex{background:color-mix(in srgb,var(--ok) 14%,#fff);color:var(--ok)}
.cues{list-style:none;padding:0}.cues li{padding:6px 0;border-top:1px dashed var(--line)}.cues b{margin-right:8px}
.prose{max-width:68ch;line-height:1.75}.prose img{max-width:100%;border-radius:8px}.prose .tip{background:var(--soft);border-left:3px solid var(--brand);padding:8px 12px;border-radius:0 8px 8px 0;margin:10px 0}
.vid{position:relative;padding-top:56.25%;margin:14px 0}.vid iframe{position:absolute;inset:0;width:100%;height:100%;border:0;border-radius:8px}
.pager{display:flex;justify-content:space-between;gap:12px;margin-top:24px;font-weight:600}
/* 考試 */
.exbar{position:sticky;top:57px;z-index:10;display:flex;gap:14px;align-items:center;justify-content:space-between;padding:10px 14px;margin:0 -16px 14px;background:var(--surface);border-bottom:1px solid var(--line);font-variant-numeric:tabular-nums}.exbar b{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#ext.warn{color:var(--no);font-weight:800}
.quiz fieldset{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:14px;margin:0 0 12px}.quiz legend{display:flex;gap:10px;font-weight:600;color:var(--ink);font-size:1rem;padding:0;float:left;width:100%;margin-bottom:10px}.quiz legend span{color:var(--muted);font-variant-numeric:tabular-nums}
.opt{flex-direction:row;align-items:flex-start;gap:10px;padding:10px 12px;border:1px solid var(--line);border-radius:8px;margin:0 0 6px;color:var(--ink);font-weight:500;font-size:.98rem;cursor:pointer;clear:both}.opt input{width:auto;margin-top:5px}.opt:has(input:checked){border-color:var(--brand);background:color-mix(in srgb,var(--brand) 7%,#fff)}
.result{text-align:center;padding:26px 16px;border-radius:12px;background:var(--surface);border:1px solid var(--line);margin-bottom:18px;display:flex;flex-direction:column;align-items:center;gap:4px}.result p{font-weight:800;font-size:1.1rem;margin:0}.result.ok p{color:var(--ok)}.result.no p{color:var(--no)}.result b{font-size:3rem;font-weight:800;line-height:1.1}.result b small{font-size:1rem}
.review{padding-left:1.3em}.review li{margin:0 0 12px}.review li.no>p:first-child{color:var(--no)}
/* 證書列印版、查證 */
.certpaper{background:#fff;border:1px solid var(--line);padding:56px 40px;text-align:center;max-width:720px;margin:16px auto;aspect-ratio:1.414/1;display:flex;flex-direction:column;justify-content:center;gap:6px}
.certpaper .cb{font-weight:800;letter-spacing:.04em;color:var(--brand)}.certpaper h1{font-size:2.2rem}.certpaper .cn{font-size:1.8rem;font-weight:700;margin:12px 0}.certpaper dl{display:grid;grid-template-columns:auto auto;justify-content:center;gap:4px 14px;margin:14px 0}.certpaper dt{color:var(--muted)}.certpaper dd{margin:0;font-weight:600}
.verify{max-width:560px;margin:4vh auto}.vres{margin-top:14px;padding:16px;border-radius:var(--r);background:var(--surface);border:2px solid var(--line)}.vres.active{border-color:var(--ok)}.vres.active b{color:var(--ok)}.vres.revoked{border-color:var(--no)}.vres.revoked b{color:var(--no)}.vres dl{display:grid;grid-template-columns:auto 1fr;gap:4px 14px;margin:10px 0 0}.vres dt{color:var(--muted)}.vres dd{margin:0}
.rub{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:0 10px}
@media (max-width:560px){.row2,.filters{grid-template-columns:1fr}.stl a{grid-template-columns:1fr}.tbl li{grid-template-columns:1fr auto}.tbl li span:nth-of-type(2){display:none}h1{font-size:1.4rem}}
@media print{.top,.nav,.noprint{display:none!important}body{background:#fff}main{padding:0}.certpaper{border:0;margin:0 auto}}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
/* ── 學習儀表板與學習路徑（v1.2） ── */
.eyebrow{font-family:var(--mono,monospace);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin:0 0 4px}
.dash .dh{margin-bottom:14px}.dash .hi{margin:0}
.kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:0 0 16px}
.kpis a{display:flex;flex-direction:column;gap:2px;padding:14px 16px;text-decoration:none;color:var(--ink);background:var(--surface);border-radius:var(--r);box-shadow:var(--frame-soft,0 0 0 1px var(--line))}
.kpis a:hover{box-shadow:var(--frame-hi,0 0 0 1px var(--brand))}
.kpis span{font-size:.78rem;color:var(--muted)}.kpis b{font-family:var(--display,inherit);font-weight:500;font-size:1.7rem;color:var(--brand);line-height:1.1}.kpis b small{font-family:var(--mono,inherit);font-size:.72rem;color:var(--muted);margin-left:2px}
.dbar{height:6px;border-radius:99px;background:var(--inset,var(--soft));overflow:hidden;margin-top:8px}.dbar i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--gold,var(--brand)),var(--brand))}
.dbar.rd{height:4px;margin-top:4px}.dbar.rd i{background:var(--pend)}
.alert{display:grid;grid-template-columns:1fr auto;gap:2px 12px;align-items:center;padding:12px 16px;margin:0 0 10px;border-radius:var(--r);text-decoration:none;color:var(--ink);background:rgba(184,90,72,.08);box-shadow:inset 3px 0 0 var(--no)}
.alert.book{background:rgba(90,130,168,.08);box-shadow:inset 3px 0 0 var(--pend)}.alert span{grid-column:1;font-size:.88rem;color:var(--ink-soft,var(--muted))}.alert em{grid-row:1/3;grid-column:2;font-style:normal;font-weight:600;font-size:.85rem;color:var(--brand-deep,var(--brand))}
.focus{padding:20px 22px;margin:0 0 22px;border-radius:var(--r);background:var(--elev,#fff);box-shadow:var(--frame,0 0 0 1px var(--line));display:grid;gap:10px}
.focus .eyebrow{margin:0}.focus .btn.big{width:auto;justify-self:start;min-width:min(100%,320px)}
.resume{display:flex;flex-direction:column;padding:10px 14px;border-radius:2px;background:var(--inset,var(--soft));text-decoration:none;color:var(--ink)}.resume span{font-size:.75rem;color:var(--muted)}.resume b{font-weight:600}
/* 路徑：直向步驟，左邊編號與連線 */
.path{list-style:none;padding:0;margin:0;position:relative}
.path .step{display:grid;grid-template-columns:40px 1fr;gap:0 14px;position:relative;padding-bottom:12px}
.path .step:not(:last-child)::before{content:'';position:absolute;left:19px;top:40px;bottom:0;width:2px;background:var(--line-soft,var(--line))}
.path .step.s-done:not(:last-child)::before{background:var(--ok)}
.path .num{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-family:var(--display,inherit);font-weight:600;font-size:1.05rem;background:var(--elev,#fff);color:var(--muted);box-shadow:inset 0 0 0 1px var(--line);position:relative;z-index:1}
.path .s-done .num{background:var(--ok);color:#fff;box-shadow:none}.path .s-now .num{color:var(--brand);box-shadow:inset 0 0 0 2px var(--brand)}
.path .cur .num{background:var(--brand);color:var(--brand-ink);box-shadow:0 0 0 4px var(--brand-dim,rgba(0,0,0,.08))}
.path .sb{padding:12px 16px 14px;border-radius:var(--r);background:var(--surface);box-shadow:var(--frame-soft,0 0 0 1px var(--line));min-width:0}
.path .cur .sb{box-shadow:var(--frame-hi,0 0 0 1px var(--brand))}.path .s-todo .sb{opacity:.82}
.sh2{display:flex;justify-content:space-between;align-items:baseline;gap:10px}.sh2 b{font-weight:600;font-size:1.02rem}.sh2 b em,.its b em,.lt{font-family:var(--display,inherit);font-style:italic;font-weight:500;color:var(--brand);margin-right:8px;font-size:1.15em}
.sm,.muted.sm{font-size:.82rem}.sb>.muted{margin:2px 0 0}
.sm2{display:flex;flex-wrap:wrap;gap:4px 16px;margin-top:8px;font-size:.85rem;color:var(--ink-soft,var(--muted))}.sm2 b{color:var(--ink);font-weight:600}.sm2 i{font-style:normal;color:#917327;margin-left:6px}
.chipsrow{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.chipsrow span{font-size:.8rem;padding:3px 10px;border-radius:2px;background:var(--inset,var(--soft));color:var(--ink-soft,var(--muted))}.chipsrow .ok{background:rgba(106,138,82,.14);color:var(--ok)}.chipsrow .no{background:rgba(184,90,72,.12);color:var(--no)}
.go{display:inline-flex;align-items:center;gap:8px;margin-top:10px;font-weight:600;font-size:.92rem;text-decoration:none;color:var(--brand-deep,var(--brand))}.go span{transition:transform .15s}.go:hover span{transform:translateX(3px)}
/* 學習頁：段落切換＋子項 */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:8px;margin:0 0 14px}
.steps a{display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto auto;gap:0 10px;align-items:center;padding:10px 14px;border-radius:var(--r);background:var(--surface);box-shadow:var(--frame-soft,0 0 0 1px var(--line));text-decoration:none;color:var(--ink)}
.steps em{grid-row:1/3;font-family:var(--display,inherit);font-style:italic;font-size:1.8rem;color:var(--brand);line-height:1}.steps span{font-weight:600}.steps small{font-size:.75rem;color:var(--muted)}
.steps a[aria-current]{background:var(--elev,#fff);box-shadow:var(--frame-hi,0 0 0 2px var(--brand))}.steps a.done small{color:var(--ok)}
.its{list-style:none;padding:0;margin:12px 0 0}.its .it{display:grid;grid-template-columns:1fr auto;gap:6px 14px;align-items:center;padding:14px 0;border-top:1px solid var(--line-soft,var(--line))}
.its .itm{display:flex;flex-direction:column;gap:2px;min-width:0}.its .itm b{font-weight:600}.its .it.done .itm b::after{content:' ✓';color:var(--ok)}
.lsd{grid-column:1/-1}.lsd summary{font-size:.82rem;padding:2px 0}.lsd ol{margin:4px 0 0;padding-left:1.4em;columns:2 240px;column-gap:24px}.lsd li{break-inside:avoid;padding:2px 0;font-size:.92rem}
a.rd{color:var(--muted)}a.rd::after{content:' ✓';color:var(--ok)}
/* 課文閱讀器：左目錄、右內文 */
.reader{display:grid;gap:22px}
.toc{font-size:.9rem}.toc .back{margin-bottom:12px}.tocg{margin:0 0 12px}.toch{display:flex;gap:8px;align-items:baseline;margin:0 0 4px;font-weight:600}.toch b{font-family:var(--display,inherit);font-style:italic;color:var(--brand)}.toch span{margin-left:auto;font-family:var(--mono,inherit);font-size:.72rem;color:var(--muted);font-weight:400}
.tocc{font-size:.74rem;color:var(--muted);margin:6px 0 2px;letter-spacing:.06em}.toc ul{list-style:none;margin:0;padding:0}.toc li a{display:block;padding:5px 10px;border-radius:2px;text-decoration:none;color:var(--ink-soft,var(--ink));line-height:1.45}
.toc li a:hover{background:var(--inset,var(--soft))}.toc li a[aria-current]{background:var(--elev,#fff);color:var(--brand-deep,var(--brand));font-weight:600;box-shadow:inset 2px 0 0 var(--brand)}
.lesson .crumb{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
.rfoot{margin-top:28px;padding-top:18px;border-top:1px solid var(--line-soft,var(--line));display:grid;gap:12px}.rfoot .btn.big{width:auto;justify-self:start}.rfoot .done{color:var(--ok);font-weight:600;margin:0}.rfoot .done .lnk{margin:0 0 0 8px;font-weight:400}
@media (max-width:899px){.toc{order:2;padding:16px;border-radius:var(--r);background:var(--surface);box-shadow:var(--frame-soft,0 0 0 1px var(--line))}.toc .back{display:block}}
@media (min-width:900px){.reader{grid-template-columns:240px minmax(0,1fr);align-items:start}.toc{position:sticky;top:80px;max-height:calc(100vh - 100px);overflow:auto;padding-right:8px}
  main:has(.reader){max-width:1100px}}
/* 考核頁 */
.arows{list-style:none;padding:0;margin:6px 0 0}.arows li{display:grid;grid-template-columns:1fr auto auto;gap:6px 14px;align-items:center;padding:12px 0;border-top:1px solid var(--line-soft,var(--line))}.arows li:first-child{border-top:0}.arows li>div{display:flex;flex-direction:column}
.sc{font-family:var(--display,inherit);font-size:1.15rem;color:var(--muted);min-width:4em;text-align:right}.sc.ok{color:var(--ok)}.sc.no{color:var(--no)}
@media (max-width:700px){.kpis{grid-template-columns:repeat(2,minmax(0,1fr))}.arows li{grid-template-columns:1fr auto}.arows li .btn{grid-column:1/-1;justify-self:start}.its .it{grid-template-columns:1fr}.its .ita{justify-self:start}.focus .btn.big{width:100%}}