:root{
  --cream:#F7F2E4;--cream-2:#FBF7EC;--paper-line:#E4DBC2;
  --green:#1E4A38;--green-2:#2B5E48;--green-line:#3A6B57;
  --gold:#B8873A;--gold-bg:#FFF7E6;--pink:#E89BA0;--pink-deep:#D97B82;
  --ink:#2C3A30;--ink-soft:#5E6B5E;--red:#B84A3E;--red-bg:#FBEAE8;
  --radius:16px;--shadow:0 6px 20px rgba(30,74,56,.10);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:64px}
body{font-family:"Noto Sans TC",sans-serif;background:var(--cream);color:var(--ink);line-height:1.7;-webkit-text-size-adjust:100%}
.kr{font-family:"Noto Sans KR",sans-serif}
button{font-family:inherit}

/* HERO */
.hero{background:linear-gradient(135deg,var(--green),var(--green-2));color:#fff;padding:28px 16px 24px;text-align:center}
.hero .tag{display:inline-block;background:var(--gold);padding:3px 14px;border-radius:20px;font-size:.74rem;font-weight:900;letter-spacing:.06em;margin-bottom:10px}
.hero h1{font-size:1.6rem;font-weight:900;line-height:1.3}
.hero p{color:#EADFC3;font-size:.86rem;margin-top:6px}

/* COURSE MAP */
.map{max-width:760px;margin:0 auto;padding:16px 16px 0}
.map-title{font-size:.78rem;font-weight:900;color:var(--green);margin-bottom:8px}
.map-row{display:grid;grid-template-columns:repeat(8,1fr);gap:5px}
.wk{background:#fff;border:1.5px solid var(--paper-line);border-radius:10px;padding:6px 2px;text-align:center;font-size:.66rem;color:var(--ink-soft);line-height:1.3}
.wk b{display:block;font-size:.8rem;color:var(--ink)}
.wk.now{background:var(--green);border-color:var(--green);color:#EADFC3}
.wk.now b{color:#fff}
.wk.rv{background:var(--gold-bg);border-color:var(--gold)}
a.wk{text-decoration:none;display:block;cursor:pointer}
a.wk:hover{border-color:var(--green);background:var(--gold-bg)}
.weeknav{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.weeknav .btn{font-size:.78rem;padding:7px 14px}

/* STICKY NAV */
nav.sec{position:sticky;top:0;z-index:10;background:var(--green);display:flex;overflow-x:auto;scrollbar-width:none;margin-top:16px}
nav.sec::-webkit-scrollbar{display:none}
nav.sec a{color:rgba(255,255,255,.7);text-decoration:none;padding:12px 14px;font-size:.8rem;font-weight:700;white-space:nowrap;border-bottom:3px solid transparent}
nav.sec a.on{color:#fff;border-bottom-color:var(--pink)}

main{max-width:760px;margin:0 auto;padding:20px 16px 60px}
section{margin-bottom:34px}
.layer{display:inline-block;font-size:.7rem;font-weight:900;padding:2px 10px;border-radius:12px;margin-bottom:8px}
.layer.core{background:var(--green);color:#fff}
.layer.review{background:var(--gold);color:#fff}
.layer.extra{background:#fff;color:var(--ink-soft);border:1.5px solid var(--paper-line)}
h2{font-size:1.2rem;font-weight:900;color:var(--green);margin-bottom:12px;line-height:1.4}
h3{font-size:1rem;font-weight:900;color:var(--green);margin:18px 0 8px}
.card{background:#fff;border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);margin-bottom:14px}
.muted{color:var(--ink-soft);font-size:.84rem}

/* GOALS */
.goals li{list-style:none;padding:8px 0 8px 30px;position:relative;border-bottom:1px dashed var(--paper-line);font-size:.92rem}
.goals li:last-child{border-bottom:none}
.goals li::before{content:"✓";position:absolute;left:4px;top:8px;width:20px;height:20px;border-radius:50%;background:var(--pink);color:var(--green);font-weight:900;font-size:.72rem;display:flex;align-items:center;justify-content:center}

/* VOCAB */
.vgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:8px}
.chip{background:var(--cream-2);border:1.5px solid var(--paper-line);border-radius:12px;padding:10px 8px;text-align:center;cursor:pointer;transition:.15s;position:relative}
.chip:active,.chip:hover{background:var(--green);border-color:var(--green)}
.chip .k{font-family:"Noto Sans KR",sans-serif;font-weight:700;font-size:1.05rem;color:var(--green);display:block}
.chip .z{font-size:.74rem;color:var(--ink-soft);display:block}
.chip .p{font-size:.68rem;color:var(--pink-deep);display:block}
.chip:hover .k,.chip:active .k{color:#fff}.chip:hover .z,.chip:active .z{color:#EADFC3}
.chip::after{content:"🔊";position:absolute;top:4px;right:6px;font-size:.62rem;opacity:.35}
.vcat{font-size:.76rem;font-weight:900;color:var(--gold);margin:14px 0 8px}
.vcat:first-child{margin-top:0}
details{background:#fff;border:1.5px dashed var(--paper-line);border-radius:12px;padding:12px 14px;margin-top:12px}
details summary{cursor:pointer;font-weight:700;font-size:.86rem;color:var(--ink-soft)}
details[open] summary{margin-bottom:10px}

/* VIDEO */
.video-wrap{display:flex;gap:16px;align-items:flex-start}
.vbox{flex:0 0 200px;aspect-ratio:9/16;border-radius:14px;background:repeating-linear-gradient(45deg,#EFE7D2 0 10px,#F4EEDD 10px 20px);border:2px dashed var(--paper-line);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:var(--ink-soft);font-size:.8rem;padding:12px}
.vbox .ic{font-size:1.8rem;margin-bottom:6px}
.vbox .st{display:inline-block;margin-top:6px;background:#fff;border:1px solid var(--paper-line);border-radius:10px;padding:1px 8px;font-size:.68rem}
.vnotes{flex:1;min-width:0}
@media(max-width:560px){.video-wrap{flex-direction:column;align-items:center}.vbox{flex-basis:auto;width:62%}.vnotes{width:100%}}

/* RULE */
.rule{background:linear-gradient(135deg,var(--green),var(--green-2));color:#fff;border-radius:14px;padding:16px 18px;margin-bottom:12px}
.rule .f{font-family:"Noto Sans KR",sans-serif;font-size:1.25rem;font-weight:900;color:var(--pink)}
.rule .d{font-size:.86rem;color:#EADFC3;margin-top:4px}
table.t{width:100%;border-collapse:collapse;font-size:.88rem;margin:6px 0 12px;border-radius:10px;overflow:hidden}
table.t th{background:var(--green);color:#EADFC3;padding:8px 10px;text-align:left;font-weight:700}
table.t td{padding:8px 10px;border-bottom:1px solid var(--paper-line);background:var(--cream-2)}
table.t td .kr{font-weight:700;color:var(--green)}
.hl{color:#E0342B;font-weight:900}
.hs{color:#0E9488;font-weight:700}

/* EXAMPLES */
.ex{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border-radius:10px;background:var(--cream-2);margin-bottom:7px;cursor:pointer}
.ex:hover{background:#F1EAD6}
.ex .n{flex:0 0 22px;height:22px;border-radius:50%;background:var(--pink);color:var(--green);font-size:.7rem;font-weight:900;display:flex;align-items:center;justify-content:center;margin-top:3px}
.ex .k{font-family:"Noto Sans KR",sans-serif;font-weight:700;color:var(--green);display:block;font-size:.98rem}
.ex .z{font-size:.8rem;color:var(--ink-soft);display:block}
.ex .t{font-size:.72rem;color:var(--gold);display:block}

.box{border-radius:12px;padding:12px 16px;margin:10px 0;font-size:.86rem}
.box .bt{font-weight:900;margin-bottom:4px}
.box.tip{background:var(--gold-bg);border:1.5px solid var(--gold)}.box.tip .bt{color:var(--gold)}
.box.warn{background:var(--red-bg);border:1.5px solid #C0645A}.box.warn .bt{color:var(--red)}
.box.help{background:#EAF3EE;border:1.5px solid var(--green-line)}.box.help .bt{color:var(--green)}
.box ul{padding-left:18px}.box li{margin:3px 0}

/* PRON */
.pron-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:10px 12px;background:var(--cream-2);border-radius:10px;margin-bottom:7px;cursor:pointer}
.pron-row .a{font-family:"Noto Sans KR",sans-serif;font-weight:700;color:var(--green)}
.pron-row .arrow{color:var(--gold);font-weight:900}
.pron-row .b{font-family:"Noto Sans KR",sans-serif;font-weight:700;color:var(--pink-deep)}
.pron-row .z{font-size:.78rem;color:var(--ink-soft);margin-left:auto}

/* SPACING */
.sp{font-family:"Noto Sans KR",sans-serif;font-size:1.1rem;font-weight:700;padding:10px 12px;border-radius:10px;margin-bottom:6px}
.sp.ok{background:#E6F2EA;color:#1F6B3C}.sp.ng{background:var(--red-bg);color:var(--red);text-decoration:line-through;text-decoration-thickness:1.5px}
.sp .gap{display:inline-block;width:.6em;border-bottom:2px solid var(--gold);margin:0 1px}

/* LISTENING / READING */
.audio-ph{display:flex;align-items:center;gap:10px;background:var(--cream-2);border:1.5px dashed var(--paper-line);border-radius:12px;padding:12px 14px;font-size:.84rem;color:var(--ink-soft);margin-bottom:12px}
.audio-ph .ic{font-size:1.4rem}
.script{display:none;margin-top:10px}
.script.show{display:block}
.line{display:flex;gap:10px;padding:7px 0;border-bottom:1px dashed var(--paper-line)}
.line .who{flex:0 0 44px;font-weight:900;color:var(--gold);font-size:.84rem;padding-top:2px}
.line .k{font-family:"Noto Sans KR",sans-serif;font-weight:700;color:var(--green);display:block;cursor:pointer}
.line .z{font-size:.78rem;color:var(--ink-soft);display:block}
.btn{background:var(--green);color:#fff;border:none;border-radius:20px;padding:8px 16px;font-size:.82rem;font-weight:700;cursor:pointer}
.btn.ghost{background:#fff;color:var(--green);border:1.5px solid var(--green)}
.passage{font-family:"Noto Sans KR",sans-serif;font-size:1.02rem;line-height:2;background:var(--cream-2);border-radius:12px;padding:14px 16px;border-left:4px solid var(--gold)}
.gloss{font-size:.78rem;color:var(--ink-soft);margin-top:8px}

/* QUIZ */
.q{background:var(--cream-2);border:1.5px solid var(--paper-line);border-radius:12px;padding:14px;margin-bottom:12px}
.q .qn{font-size:.7rem;font-weight:900;color:var(--pink-deep);letter-spacing:.06em}
.q .qt{font-size:.94rem;margin:4px 0 10px}
.q .qt .kr{font-weight:700;color:var(--green)}
.opts{display:grid;grid-template-columns:1fr;gap:7px}
.opt{text-align:left;background:#fff;border:1.5px solid var(--paper-line);border-radius:9px;padding:10px 12px;font-size:.92rem;cursor:pointer;color:var(--ink)}
.opt.kr{font-family:"Noto Sans KR",sans-serif}
.opt.right{background:#2a7a4a;border-color:#2a7a4a;color:#fff}
.opt.wrong{background:#c0392b;border-color:#c0392b;color:#fff}
.opt:disabled{cursor:default}
.fb{display:none;margin-top:10px;font-size:.84rem;padding:10px 12px;border-radius:9px;background:#fff;border-left:4px solid var(--green)}
.fb.show{display:block}
.fb b{color:var(--green)}
.score{text-align:center;font-weight:900;color:var(--green);padding:10px;display:none}
.score.show{display:block}

/* LINKED CARDS */
.lk{display:flex;gap:12px;align-items:center;padding:12px;border:1.5px solid var(--paper-line);border-radius:12px;background:#fff;margin-bottom:8px}
.review-note{font-size:.8rem;background:var(--gold-bg);border:1.5px dashed var(--gold);border-radius:10px;padding:8px 12px;margin-bottom:10px;color:var(--ink)}
a.lk{text-decoration:none;color:inherit}
a.lk:hover{border-color:var(--green)}
.lk .ic{font-size:1.4rem}
.lk .tt{font-weight:700;font-size:.9rem}
.lk .ds{font-size:.76rem;color:var(--ink-soft)}
.lk .when{margin-left:auto;font-size:.68rem;font-weight:900;padding:2px 8px;border-radius:10px;white-space:nowrap}
.when.now{background:var(--green);color:#fff}
.when.later{background:var(--cream);color:var(--ink-soft);border:1px solid var(--paper-line)}

.hw li{margin:6px 0 6px 18px;font-size:.9rem}
/* READING MODULE */
.rd-step{display:flex;align-items:center;gap:8px;font-weight:900;color:var(--green);font-size:.92rem;margin-bottom:10px}
.rd-no{flex:0 0 22px;height:22px;border-radius:50%;background:var(--gold);color:#fff;font-size:.72rem;display:flex;align-items:center;justify-content:center}
.rd-btns{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.btn.on{background:var(--green);color:#fff}
.rd-zh{display:none;margin-top:10px;background:var(--gold-bg);border-radius:10px;padding:10px 14px;font-size:.9rem}
.rd-zh.show{display:block}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:.78rem;color:var(--ink-soft);margin-bottom:12px}
.legend span{display:flex;align-items:center;gap:5px}
.lg{width:12px;height:12px;border-radius:3px;display:inline-block}
.lg.w{background:#1565D8}.lg.g{background:#1F8A4C}.lg.p{background:#7B4FC9}
.sc{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden}
.sc-head{padding:16px 18px 12px}
.sc-no{font-size:.7rem;font-weight:900;color:var(--pink-deep);letter-spacing:.06em;margin-bottom:4px}
.sc-kr{font-family:"Noto Sans KR",sans-serif;font-size:1.25rem;font-weight:700;color:var(--ink);line-height:1.9}
.tk{border-radius:5px;transition:.15s}
.sc.an .tk.w{color:#1565D8;background:#E8F0FC;cursor:pointer;padding:1px 2px}
.sc.an .tk.g{color:#1F8A4C;background:#E4F4EA;cursor:pointer;padding:1px 2px}
.sc.an .tk.p{color:#7B4FC9;background:#F0EAFA;cursor:pointer;padding:1px 2px}
.sc.an .tk.w,.sc.an .tk.g,.sc.an .tk.p{border-bottom:2px solid currentColor}
.tk.o{display:none}
.sc.an .tk.o{display:inline;color:#8A8F88;background:#F0F0EC;border:1.5px dashed #A9ADA6;border-radius:6px;padding:0 3px;cursor:pointer;font-weight:500}
.lg.o{background:#fff;border:1.5px dashed #8A8F88}
.sh-type.o{background:#8A8F88}
.gh{display:none;color:#8A8F88;background:#F0F0EC;border:1.5px dashed #A9ADA6;border-radius:6px;padding:0 3px;font-weight:500}
.script.ghost .gh{display:inline}
.sc-zh{display:none;font-size:.9rem;color:var(--ink-soft);margin-top:6px}
.sc-zh.show{display:block}
.chunks{display:none;margin-top:12px;gap:6px;flex-wrap:wrap;align-items:stretch}
.sc.an .chunks{display:flex}
.chunk{border:1.5px solid var(--paper-line);border-radius:10px;padding:6px 10px;background:var(--cream-2);text-align:center}
.chunk .ck{font-family:"Noto Sans KR",sans-serif;font-weight:700;color:var(--green);display:block}
.chunk .cl{font-size:.7rem;color:var(--ink-soft);display:block}
.chunk.core{border-color:var(--gold);background:var(--gold-bg)}
.chunk-arrow{align-self:center;color:var(--gold);font-weight:900}
.chunks-title{display:none;font-size:.74rem;font-weight:900;color:var(--gold);margin-top:12px}
.sc.an .chunks-title{display:block}
.acc{border:none;border-top:1px solid var(--paper-line);border-radius:0;margin:0;padding:0;background:#fff}
.acc[open] summary{margin-bottom:0}
.acc summary{list-style:none;cursor:pointer;padding:12px 18px;font-weight:700;font-size:.9rem;display:flex;justify-content:space-between;align-items:center}
.acc summary::-webkit-details-marker{display:none}
.acc summary::after{content:"＋";color:var(--gold);font-weight:900}
.acc[open] summary::after{content:"－"}
.acc .ab{padding:0 18px 14px;font-size:.88rem}
.acc.teacher summary{color:var(--green)}
.acc.other summary{color:#7B4FC9}
.acc.nuance summary{color:var(--red)}
.acc.write summary{color:var(--gold)}
.alt{padding:8px 12px;background:var(--cream-2);border-radius:9px;margin-bottom:7px}
.alt .ak{font-family:"Noto Sans KR",sans-serif;font-weight:700;color:var(--green);display:block;cursor:pointer}
.alt .az{font-size:.8rem;color:var(--ink-soft);display:block}
.alt.lock{border:1px dashed var(--gold);background:var(--gold-bg)}
.alt.lock .ak::after{content:"之後會學";font-family:'Noto Sans TC',sans-serif;font-size:.66rem;font-weight:900;color:#fff;background:var(--gold);border-radius:8px;padding:1px 7px;margin-left:6px;vertical-align:middle}
table.nu{width:100%;border-collapse:collapse;font-size:.84rem;margin-top:4px}
table.nu th{background:var(--cream);color:var(--green);padding:7px 8px;text-align:left;font-weight:900;border-bottom:2px solid var(--paper-line)}
table.nu td{padding:7px 8px;border-bottom:1px solid var(--paper-line);vertical-align:top}
table.nu td:first-child{font-family:"Noto Sans KR",sans-serif;font-weight:700;color:var(--green);white-space:nowrap}
.wr-task{font-size:.9rem;margin-bottom:8px}
.wr-task .kr{font-weight:700;color:var(--green)}
.wr textarea{width:100%;min-height:64px;border:1.5px solid var(--paper-line);border-radius:10px;padding:10px;font-family:"Noto Sans KR","Noto Sans TC",sans-serif;font-size:1rem;background:var(--cream-2);resize:vertical}
.wr-ans{display:none;margin-top:10px;background:#E6F2EA;border-radius:10px;padding:10px 12px;font-size:.88rem}
.wr-ans.show{display:block}
.wr-ans .kr{font-weight:700;color:#1F6B3C}
/* popup sheet */
.sheet-bg{position:fixed;inset:0;background:rgba(20,35,28,.45);z-index:50;display:none}
.sheet-bg.show{display:block}
.sheet{position:fixed;left:0;right:0;bottom:0;z-index:51;background:#fff;border-radius:18px 18px 0 0;padding:18px 18px 26px;max-height:78vh;overflow-y:auto;transform:translateY(105%);transition:transform .22s ease;box-shadow:0 -8px 30px rgba(0,0,0,.18)}
.sheet.show{transform:translateY(0)}
@media(min-width:700px){.sheet{left:50%;right:auto;width:520px;bottom:auto;top:50%;border-radius:18px;transform:translate(-50%,-40%);opacity:0;pointer-events:none;transition:.18s}.sheet.show{transform:translate(-50%,-50%);opacity:1;pointer-events:auto}}
.sh-grip{width:40px;height:4px;border-radius:2px;background:var(--paper-line);margin:0 auto 12px}
.sh-type{display:inline-block;font-size:.7rem;font-weight:900;color:#fff;padding:2px 10px;border-radius:10px}
.sh-type.w{background:#1565D8}.sh-type.g{background:#1F8A4C}.sh-type.p{background:#7B4FC9}
.sh-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:8px 0 12px}
.sh-word{font-family:"Noto Sans KR",sans-serif;font-size:1.5rem;font-weight:900;color:var(--ink)}
.sh-close{background:var(--cream);border:none;border-radius:50%;width:32px;height:32px;font-size:1rem;cursor:pointer;flex:0 0 32px}
.sh-row{padding:9px 0;border-top:1px dashed var(--paper-line)}
.sh-row .sl{font-size:.72rem;font-weight:900;color:var(--gold);display:block;margin-bottom:2px}
.sh-row .sv{font-size:.92rem}
.sh-row.ctx{background:var(--gold-bg);border:none;border-radius:10px;padding:10px 12px;margin-top:6px}
.sh-row .kr{font-weight:700;color:var(--green)}

.ph{position:relative;width:100%;border:2px dashed var(--gold);border-radius:12px;background:repeating-linear-gradient(45deg,#FBF3E2 0 10px,#F6ECD6 10px 20px);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:var(--ink-soft);font-size:.72rem;line-height:1.45;padding:8px;overflow:hidden}
.ph .pi{font-size:1.3rem}
.ph .pn{font-weight:900;color:var(--gold)}
.ph .pf{font-family:monospace;font-size:.66rem;color:var(--ink-soft);word-break:break-all}
.ph.sm{padding:2px;font-size:.58rem;border-width:1.5px}
.ph.sm .pi{font-size:.9rem}
[lang=ko],.passage,.sc-kr,.line .k,.ex .k,.alt .ak{word-break:keep-all}
img.fig{width:100%;height:auto;display:block;border-radius:12px}
.fig-wrap{margin:12px 0}
.hero .ph{width:150px;margin:0 auto 12px;background:rgba(255,255,255,.12);border-color:#EADFC3;color:#EADFC3}
.hero .ph .pn,.hero .ph .pf{color:#fff}
.chip .ph{width:56px;margin:0 auto 6px}
footer{background:var(--green);color:rgba(255,255,255,.6);text-align:center;padding:18px;font-size:.76rem}

/* VOCAB VIDEO */
.vocab-vid{margin-bottom:14px}
.vvid-embed{position:relative;width:100%;max-width:300px;aspect-ratio:9/16;margin:0 auto;border-radius:14px;overflow:hidden;background:#000;box-shadow:var(--shadow)}
.vvid-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.vvid-ph{display:flex;align-items:center;gap:10px;background:var(--cream-2);border:1.5px dashed var(--paper-line);border-radius:12px;padding:12px 14px;font-size:.84rem;color:var(--ink-soft)}
.vvid-ph .ic{font-size:1.4rem;flex:0 0 auto}