:root{
  --paper:#fdfbf5; --card:#fff; --ink:#211d16; --muted:#6f6a5e;
  --hair:#e8e1d1; --hair2:#b9b09a; --hair-strong:#b9b09a;
  --brand:#23634f; --brand-soft:#e3f0e9; --brand-deep:#1b4d3e; --brand-bright:#2f8465;
  --sun:#f07f2e; --sun-soft:#ffedd9; --sun-ink:#b25a17;
  --bad:#c0442c; --good:#23634f;
  --stick:4px 5px 0 rgba(43,58,50,.13);
  --stick-big:7px 9px 0 rgba(43,58,50,.16);
  --ease:cubic-bezier(.16,1,.3,1);
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;scroll-padding-top:80px;}
body{
  background:var(--paper);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang TC","Noto Sans TC","Microsoft JhengHei",sans-serif;
  font-size:16px;line-height:1.7;
  background-image:radial-gradient(circle, rgba(35,99,79,.07) 1.2px, rgba(35,99,79,0) 1.4px);
  background-size:26px 26px;
}
::selection{background:var(--brand-soft);}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:6px;}
a{color:var(--brand);}
main{max-width:900px;margin:0 auto;padding:28px 20px 60px;}

/* entrance motion */
@keyframes rise{from{opacity:0;transform:translateY(16px);}to{opacity:1;transform:none;}}
@keyframes floaty{0%,100%{transform:translateY(0) rotate(0deg);}50%{transform:translateY(-9px) rotate(6deg);}}
@keyframes pop{0%{transform:scale(.6);opacity:0;}70%{transform:scale(1.08);}100%{transform:scale(1);opacity:1;}}
.hero,.blk{animation:rise .5s var(--ease) both;}
main>.blk:nth-of-type(1){animation-delay:.07s;}
main>.blk:nth-of-type(2){animation-delay:.14s;}
main>.blk:nth-of-type(3){animation-delay:.21s;}
main>.blk:nth-of-type(n+4){animation-delay:.28s;}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;}
}

/* header */
@media(max-width:1150px){.free-pill{display:none;}}
.site-header{background:rgba(253,251,245,.94);backdrop-filter:blur(8px);border-bottom:2px solid var(--ink);position:sticky;top:0;z-index:50;}
.site-header::before{content:'';display:block;height:5px;background:linear-gradient(90deg,#ef4444 0%,#f97316 14%,#eab308 28%,#22c55e 42%,#14b8a6 56%,#3b82f6 70%,#a855f7 85%,#ec4899 100%);}
.hrow{max-width:1080px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.logo{font-weight:900;font-size:22px;color:var(--ink);text-decoration:none;letter-spacing:-.02em;flex:none;}
.logo .logo-zh{font-size:14px;font-weight:800;color:var(--sun-ink);margin-left:7px;letter-spacing:.06em;transform:translateY(-1px);display:inline-block;}
.logo span{color:var(--brand);}
.free-pill{font-size:12px;border:2px solid var(--ink);border-radius:999px;padding:2px 10px;color:var(--ink);white-space:nowrap;background:var(--sun-soft);font-weight:700;flex:none;}
nav{display:flex;gap:12px;flex-wrap:wrap;}
nav a{position:relative;color:#4d483d;text-decoration:none;font-size:14px;font-weight:600;padding:2px 0;white-space:nowrap;}
nav a::after{content:'';position:absolute;left:0;right:100%;bottom:-2px;height:3px;border-radius:3px;background:var(--sun);transition:right .25s var(--ease);}
nav a:hover{color:var(--brand);}
nav a:hover::after{right:0;}
.search-wrap{position:relative;flex:1 1 150px;max-width:225px;min-width:140px;}
#q{border:2px solid var(--ink);background:#fff;border-radius:12px;padding:7px 12px;font-size:14px;width:100%;font-weight:500;transition:box-shadow .2s var(--ease),transform .2s var(--ease);box-shadow:2px 2px 0 rgba(43,58,50,.14);}
#q:focus{outline:none;transform:translateY(-1px);box-shadow:4px 4px 0 rgba(35,99,79,.25);}
.qres{position:absolute;top:110%;left:0;right:-40px;background:#fff;border:2px solid var(--ink);border-radius:14px;box-shadow:5px 6px 0 rgba(43,58,50,.15);max-height:340px;overflow:auto;z-index:60;}
.qres a{display:block;padding:9px 14px;text-decoration:none;color:var(--ink);border-bottom:1px solid #f0ece1;}
.qres a:hover{background:var(--brand-soft);}
.qres .q-sub{display:block;font-size:12px;color:var(--muted);}
.qres .q-snip{display:block;font-size:12.5px;color:#4d483d;margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.qres .q-empty{padding:10px 14px;color:var(--muted);font-size:14px;}
/* 2026-10-02 右側工具群（HEADER-LANG brief A）：搜尋＋我的學習＋語言鍵收成一組，nav 只留瀏覽項 */
.hrow-right{margin-left:auto;display:flex;align-items:center;gap:10px;flex-wrap:nowrap;}
.hrow-right .search-wrap{margin-left:0;}
/* 三段語言鍵（brief B）：繁中｜簡中｜EN，當前語言 sun 底高亮；冇對應語言嘅格唔出 */
.lang-menu{display:inline-flex;border:2px solid var(--ink);border-radius:10px;overflow:hidden;flex:none;background:#fff;box-shadow:2px 2px 0 rgba(43,58,50,.18);}
.lang-opt{font-size:13px;font-weight:700;color:var(--ink);text-decoration:none;padding:4px 9px;white-space:nowrap;border-right:1.5px solid var(--ink);transition:all .15s var(--ease);}
.lang-opt:last-child{border-right:none;}
.lang-opt:hover{background:var(--brand-soft);}
.lang-opt.is-on{background:var(--sun);color:var(--ink);font-weight:800;cursor:default;}
.lang-opt:not(.is-on):hover{transform:translate(-1px,-1px);}
@media(max-width:1000px){
  .free-pill{display:none;}
  .hrow-right{flex:1 1 100%;order:9;}
}
@media(max-width:640px){ .hrow-right .nav-my{font-size:12.5px;padding:3px 8px;} }

/* 2026-10-02 P0-2 手機底部 sticky 工具條（課頁）：朗讀｜上一課｜下一課｜我識咗 */
.mobile-bar{display:none;}
@media(max-width:640px){
  .mobile-bar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:40;
    background:rgba(253,251,245,.97);backdrop-filter:blur(8px);border-top:2px solid var(--ink);
    padding:8px 10px calc(8px + env(safe-area-inset-bottom));gap:8px;justify-content:space-around;}
  .mb-btn{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:11.5px;font-weight:800;
    background:#fff;border:2px solid var(--ink);border-radius:12px;padding:7px 4px;color:var(--ink);
    text-decoration:none;box-shadow:2px 2px 0 rgba(43,58,50,.18);cursor:pointer;}
  .mb-btn.is-on{background:var(--sun-soft);border-color:var(--sun);color:var(--sun-ink);}
  body{padding-bottom:calc(78px + env(safe-area-inset-bottom));}
  /* inline bottom 會疊工具條，壓過佢；三粒要各有各格——之前三粒齊壓 96px，waShare（DOM 後）冚住 backToTop，箭咀喺手機消失 */
  #backToTop{bottom:calc(96px + env(safe-area-inset-bottom)) !important;}
  #waShare{bottom:calc(156px + env(safe-area-inset-bottom)) !important;}
  #fbShare{bottom:calc(216px + env(safe-area-inset-bottom)) !important;}
}
@media print{.mobile-bar{display:none;}}

/* 2026-10-02 P0-3 首頁社交證明數字帶 */
.hero-stats{display:flex;gap:18px;flex-wrap:wrap;margin-top:10px;}
.hero-stats b{font-size:22px;color:var(--brand);}

/* hero panel */
.hero{padding:34px 0 12px;}
.hero-panel{
  position:relative;overflow:hidden;color:var(--ink);
  background:linear-gradient(135deg,#e7f4ec 0%,#d3ecdd 42%,#fdeedd 100%);
  border:3px solid var(--ink);border-radius:26px;
  box-shadow:7px 9px 0 rgba(43,58,50,.16);
  padding:38px 34px 24px;
}
.hp-shape{position:absolute;border-radius:50%;pointer-events:none;}
.hp-s1{width:110px;height:110px;right:-30px;top:-34px;background:rgba(240,127,46,.32);animation:floaty 5s ease-in-out infinite;}
.hp-s2{width:52px;height:52px;right:120px;bottom:44px;background:rgba(35,99,79,.14);animation:floaty 6s ease-in-out .8s infinite;border-radius:38% 62% 55% 45%;}
.hp-s3{width:26px;height:26px;left:-8px;bottom:90px;background:var(--sun);opacity:.55;animation:floaty 4.5s ease-in-out .4s infinite;}
.hero-panel h1{font-size:clamp(30px,5.2vw,46px);line-height:1.12;letter-spacing:-.025em;font-weight:900;color:var(--ink);animation:pop .5s var(--ease) both;}
.hero-panel .hero-sub{color:#4d483d;margin:14px 0 16px;max-width:64ch;font-size:16.5px;}
.hero-panel .hero-sub b{color:var(--brand);}
.hero-badges{display:flex;gap:9px;flex-wrap:wrap;position:relative;}
.hero-badges span{background:#fff;border:2px solid var(--ink);color:var(--ink);border-radius:999px;font-size:13px;font-weight:800;padding:5px 14px;box-shadow:2px 3px 0 rgba(43,58,50,.15);}
.hero-badges span:first-child{background:var(--sun-soft);border-color:var(--sun);color:var(--sun-ink);}
/* hero 下載列：btn-primary 係 <a>（inline），padding 會爆出容器 → 一定要 flex 排列＋wrap */
.hero-dl{display:flex;flex-wrap:wrap;align-items:center;gap:10px 12px;margin-top:14px;}
.hero-dl .btn-primary{display:inline-block;text-decoration:none;line-height:1.35;flex:0 0 auto;max-width:100%;}
.hero-dl .muted{font-size:13px;line-height:1.5;flex:1 1 240px;min-width:0;}
.hero-panel .hero-art{margin:14px auto 0;max-width:640px;}
.hero-art{margin:22px auto 0;}
.hero-art svg{filter:drop-shadow(0 3px 6px rgba(43,58,50,.12));}

/* blocks & sections */
.blk{margin:36px 0;}
.blk h2{font-size:23px;margin-bottom:16px;font-weight:900;letter-spacing:-.01em;display:flex;align-items:center;gap:11px;}
.blk h2::before{content:'';width:9px;height:24px;border-radius:5px;flex:none;background:linear-gradient(180deg,var(--brand-bright),var(--brand));box-shadow:2px 2px 0 rgba(43,58,50,.2);}
.sec-h{display:flex;align-items:baseline;gap:10px;font-size:17px;margin-bottom:10px;font-weight:800;}
.sec-h .no{font-size:12px;color:var(--brand);border:2px solid var(--brand);border-radius:7px;width:23px;height:23px;display:inline-flex;align-items:center;justify-content:center;flex:none;transform:translateY(3px);font-weight:800;}
.en-tag{font-size:12px;color:var(--muted);font-weight:500;}
.muted{color:var(--muted);font-size:14px;}

/* topic page */
.crumbs{font-size:13px;color:var(--muted);margin-bottom:14px;}
.crumbs a{color:var(--muted);}
.t-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px;}
.t-head h1{font-size:clamp(25px,4vw,33px);letter-spacing:-.01em;}
.diff{font-size:12.5px;border-radius:8px;padding:3px 11px;font-weight:800;border:2px solid var(--ink);}
.d1{background:var(--brand-soft);color:var(--brand-deep);}
.d2{background:var(--sun-soft);color:var(--sun-ink);}
.prereq{background:#fff;border:2px solid var(--ink);border-radius:12px;padding:10px 14px;font-size:14.5px;margin:14px 0;box-shadow:3px 4px 0 rgba(43,58,50,.12);}
/* 2026-10-22 課頁開場簡介卡：頁首直接答「教咩／邊個讀／單元邊個／學完識咩」——搜尋入場＋爬蟲第一屏就見到 */
.lesson-brief{background:#fff;border:2px solid var(--ink);border-radius:14px;padding:14px 18px;margin:14px 0;box-shadow:var(--stick);}
.lesson-brief .lb-lead{font-size:16.5px;font-weight:650;line-height:1.65;margin:0 0 8px;}
.lesson-brief .lb-meta{font-size:13.5px;color:var(--muted);margin:0 0 10px;}
.lesson-brief .lb-meta b{color:var(--ink);}
.lesson-brief .lb-meta a{color:var(--brand-deep);font-weight:700;}
.lesson-brief .lb-out{font-size:14.5px;border-top:1.5px dashed var(--hair2);padding-top:9px;}
/* 任務 1B（2026-10-31）brief 卡第四層：範文課「下載本課 PDF」。btn-primary 係為 <button> 寫、
   冇 display——<a> 預設 inline，padding 唔推開容器會爆框（同 .hero-dl 同一個 bug），一定要 inline-block。
   2026-10-31 站主指示：掣同說明文字要**各自一行**（同 .hero-dl 一樣），唔好黏埋一齊被切斷 →
   改用 flex column，唔用 inline flow。 */
.lesson-brief .pdf-dl{display:flex;flex-direction:column;align-items:flex-start;gap:8px;margin:10px 0 0;padding-top:9px;border-top:1.5px dashed var(--hair2);font-size:14px;}
.lesson-brief .pdf-dl .btn-primary{display:inline-block;text-decoration:none;line-height:1.35;flex:0 0 auto;max-width:100%;}
.lesson-brief .pdf-dl .muted{font-size:13px;line-height:1.5;}
.lesson-brief .lb-out ul{margin:5px 0 0 20px;}
@media(max-width:640px){.lesson-brief{padding:12px 14px;}.lesson-brief .lb-lead{font-size:15.5px;}}
.tldr{font-size:18px;font-weight:650;background:var(--sun-soft);border:2px solid var(--ink);border-radius:14px;padding:16px 18px;box-shadow:4px 5px 0 rgba(43,58,50,.14);}

.vgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px;}
.vcard{background:#fff;border:2px solid var(--ink);border-radius:14px;padding:12px 14px;display:flex;flex-direction:column;gap:6px;transition:transform .2s var(--ease),box-shadow .2s var(--ease);}
.vcard:hover{transform:translate(-1px,-3px);box-shadow:5px 7px 0 rgba(43,58,50,.18);}
.vterm{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;}
.vterm b{font-size:15px;}
.vterm span{color:var(--brand);font-weight:800;font-size:14.5px;}
.vcard p{font-size:13.5px;color:#4d483d;}

.steps{list-style:none;display:flex;flex-direction:column;gap:11px;counter-reset:step;}
.steps li{background:#fff;border:2px solid var(--ink);border-radius:14px;padding:12px 16px;transition:transform .2s var(--ease),box-shadow .2s var(--ease);}
.steps li:hover{transform:translate(-1px,-3px);box-shadow:5px 7px 0 rgba(43,58,50,.18);}
.steps li b{display:block;margin-bottom:2px;}
.steps li span{font-size:14.5px;color:#4d483d;}

.dia{margin:6px 0 0;}
.frac{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;vertical-align:middle;line-height:1;font-size:.92em;min-width:1.25em;margin:0 .12em;white-space:nowrap;}
.frac-top{display:block;padding:0 .14em 1px;border-bottom:1.5px solid currentColor;line-height:1.05;}
.frac-bottom{display:block;padding-top:1px;line-height:1.05;}
.dia figcaption{font-size:12.5px;color:var(--muted);text-align:center;margin-top:6px;}
.worked{background:#fff;border:2px solid var(--ink);border-radius:14px;padding:14px 18px;box-shadow:4px 5px 0 rgba(43,58,50,.12);}
.worked ol{margin:8px 0 0 20px;}
.worked ol li>b{display:block;margin-bottom:2px;}
.worked ol li>span{color:#4d483d;}
.worked .ans{color:var(--brand);font-weight:800;list-style:none;margin-left:0;margin-top:8px;line-height:1.7;display:block;}

.mistakes{display:flex;flex-direction:column;gap:10px;}
.mrow{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
@media(max-width:680px){.mrow{grid-template-columns:1fr;}}
.bad,.good{border-radius:14px;padding:10px 14px;font-size:14.5px;border:2px solid var(--ink);}
.bad{background:#fde5de;color:var(--bad);box-shadow:3px 4px 0 rgba(43,58,50,.12);}
.good{background:var(--brand-soft);color:var(--good);box-shadow:3px 4px 0 rgba(43,58,50,.12);}

.quizlist{display:flex;flex-direction:column;gap:9px;}
.quiz{background:#fff;border:2px solid var(--ink);border-radius:14px;padding:0 16px;transition:box-shadow .2s var(--ease),transform .2s var(--ease);}
.quiz[open]{box-shadow:4px 5px 0 rgba(43,58,50,.16);transform:translate(-1px,-2px);}
.quiz summary{cursor:pointer;padding:12px 0;font-weight:700;list-style:none;position:relative;}
.quiz summary::after{content:'+';position:absolute;right:0;color:var(--sun);font-weight:900;font-size:19px;}
.quiz[open] summary::after{content:'−';}
.quiz .ans{padding:0 0 14px;color:#4d483d;font-size:15px;}

.takeaways{margin-left:20px;}
.takeaways li{margin:4px 0;}
.done-btn{margin-top:14px;background:var(--sun);color:#fff;border:2.5px solid var(--ink);border-radius:14px;padding:11px 24px;font-size:15.5px;font-weight:900;cursor:pointer;box-shadow:0 5px 0 var(--ink);transition:transform .12s var(--ease),box-shadow .12s var(--ease);}
.done-btn:hover{transform:translateY(-2px);box-shadow:0 7px 0 var(--ink);}
.done-btn:active{transform:translateY(4px);box-shadow:0 1px 0 var(--ink);}
.done-btn.done{background:#fff;color:var(--brand);}
.next-card{display:block;margin-top:26px;background:var(--sun-soft);border:2.5px solid var(--ink);border-radius:16px;padding:15px 18px;text-decoration:none;color:var(--ink);font-weight:800;box-shadow:5px 6px 0 rgba(43,58,50,.18);transition:transform .2s var(--ease),box-shadow .2s var(--ease);}
.next-card:hover{transform:translate(-2px,-3px);box-shadow:7px 9px 0 rgba(43,58,50,.22);}
.done-card{text-align:center;background:var(--brand-soft);}

/* subject + home */
.sub-hero h1{font-size:clamp(27px,4vw,35px);}
.sub-desc{color:#4d483d;margin-top:8px;max-width:64ch;}
.path-note{margin-top:6px;font-size:14px;color:var(--brand);font-weight:700;}
.pathlist{list-style:none;display:flex;flex-direction:column;gap:9px;}
.pathlist li{background:#fff;border:2px solid var(--ink);border-radius:14px;transition:transform .2s var(--ease),box-shadow .2s var(--ease);}
.pathlist li:hover{transform:translate(-1px,-3px);box-shadow:5px 7px 0 rgba(43,58,50,.18);}
.pathlist .topic-link{display:flex;align-items:baseline;gap:12px;padding:12px 16px;text-decoration:none;color:var(--ink);}
.pathlist .ord{font-weight:900;color:var(--sun);width:24px;flex:none;font-size:17px;text-align:center;line-height:1.45;}
.pathlist .tl{flex:1;}
.pathlist .tick{margin-left:auto;color:var(--brand);font-weight:900;}
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(292px,1fr));gap:16px;}
.subject-card{background:#fff;border:2.5px solid var(--ink);border-radius:18px;padding:18px 20px;text-decoration:none;color:var(--ink);display:flex;flex-direction:column;gap:8px;min-width:0;box-shadow:var(--stick);transition:transform .18s var(--ease),box-shadow .18s var(--ease);}
.subject-card .sc-meta{margin-top:auto;}
.subject-card p{overflow-wrap:break-word;}
.subject-card:hover{transform:translate(-2px,-4px);box-shadow:var(--stick-big);}
.subject-card:active{transform:translate(1px,2px);box-shadow:2px 3px 0 rgba(43,58,50,.15);}
.sc-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.sc-top .grade{white-space:nowrap;flex:none;}
.sc-top .grade{background:var(--sun);color:#fff;border:2px solid var(--ink);border-radius:8px;font-size:12.5px;padding:1px 9px;font-weight:800;}
.sc-top h3{font-size:17.5px;line-height:1.3;min-width:0;overflow-wrap:anywhere;}
.subject-card p{font-size:14px;color:#4d483d;}
.sc-meta{font-size:13px;color:var(--brand);font-weight:800;}
.subject-card.live .sc-meta::before{content:'';display:inline-block;width:9px;height:9px;border-radius:999px;background:var(--sun);margin-right:6px;animation:pulse 1.8s infinite;}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(240,127,46,.5);}50%{box-shadow:0 0 0 6px rgba(240,127,46,0);}}
.curr-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;}
.curr{border:2.5px solid var(--ink);border-radius:14px;padding:13px 15px;background:#fff;display:flex;flex-direction:column;gap:2px;box-shadow:var(--stick);transition:transform .18s var(--ease),box-shadow .18s var(--ease);text-decoration:none;color:var(--ink);}
.curr:hover{transform:translate(-1px,-3px);box-shadow:var(--stick-big);}
.curr span{font-size:12.5px;color:var(--muted);}
.curr.on{background:var(--brand-soft);}
.curr.on b{color:var(--brand-deep);}
.curr.off{opacity:.62;}
.howto{margin-left:20px;}
.howto li{margin:6px 0;}

/* grades & catalog — rainbow chips */
.stage-split{font-size:16.5px;font-weight:800;margin:6px 0 12px;display:flex;align-items:center;gap:9px;}
.stage-split + .grade-grid{margin-bottom:18px;}
.stage-split.sec{margin-top:20px;}
.stage-split::before{content:'';width:13px;height:13px;border-radius:4px;border:2px solid var(--ink);flex:none;}
.stage-split.pri::before{background:var(--sun);}
.stage-split.sec::before{background:var(--brand);}
.grade-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;}
@media(max-width:700px){.grade-grid{grid-template-columns:repeat(2,1fr);}}
.grade-chip{--gc:var(--brand);display:flex;align-items:center;justify-content:center;gap:8px;background:#fff;border:2.5px solid var(--gc);border-radius:14px;padding:14px 10px;text-decoration:none;color:var(--ink);font-weight:800;font-size:15px;box-shadow:3px 4px 0 rgba(43,58,50,.13);transition:transform .16s var(--ease),box-shadow .16s var(--ease);}
.grade-chip i{font-style:normal;font-size:11.5px;background:var(--gc);color:#fff;border-radius:999px;padding:1px 8px;font-weight:800;}
.grade-grid a[href*="/p1/"]{--gc:#ef4444;}
.grade-grid a[href*="/p2/"]{--gc:#f97316;}
.grade-grid a[href*="/p3/"]{--gc:#d99a06;}
.grade-grid a[href*="/p4/"]{--gc:#65a30d;}
.grade-grid a[href*="/p5/"]{--gc:#0d9488;}
.grade-grid a[href*="/p6/"]{--gc:#0891b2;}
.grade-grid a[href*="/s1/"]{--gc:#2563eb;}
.grade-grid a[href*="/s2/"]{--gc:#7c3aed;}
.grade-grid a[href*="/s3/"]{--gc:#c026d3;}
.grade-grid a[href*="/s4/"]{--gc:#db2777;}
.grade-grid a[href*="/s5/"]{--gc:#e11d48;}
.grade-grid a[href*="/s6/"]{--gc:#ea580c;}
.grade-chip.has-live{background:color-mix(in srgb,var(--gc) 9%,#fff);}
.grade-chip:hover{transform:translate(-2px,-4px);box-shadow:5px 7px 0 rgba(43,58,50,.2);}
.grade-chip:active{transform:translate(1px,2px);box-shadow:1px 1px 0 rgba(43,58,50,.15);}
.subject-card.live{background:color-mix(in srgb,var(--sun) 7%,#fff);}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0 14px;}
.chip{font-size:12.5px;background:var(--brand-soft);color:var(--brand-deep);border:2px solid var(--brand);border-radius:999px;padding:2px 12px;font-weight:700;}
.chip.phase{background:var(--sun-soft);border-color:var(--sun);color:var(--sun-ink);}
table.units{width:100%;border-collapse:collapse;background:#fff;border:2px solid var(--ink);border-radius:14px;overflow:hidden;font-size:14.5px;box-shadow:var(--stick);}
table.units th{text-align:left;background:#fbf7ec;padding:10px 14px;border-bottom:2px solid var(--ink);font-size:12px;letter-spacing:.08em;color:var(--muted);}
table.units td{padding:10px 14px;border-bottom:1px solid var(--hair);}
table.units tr:last-child td{border-bottom:none;}
table.units .num{text-align:right;color:var(--muted);width:80px;}
.soon{font-size:12.5px;color:var(--sun-ink);background:var(--sun-soft);border:1.5px solid var(--sun);border-radius:8px;padding:1px 8px;white-space:nowrap;font-weight:700;}
.soon-chip{color:var(--sun-ink);}
.en-tag{font-size:12px;color:var(--muted);font-weight:500;}

/* subject units */
.unit-nav{display:flex;gap:10px;flex-wrap:wrap;margin:4px 0 6px;}
.unit-chip{display:inline-flex;align-items:center;gap:8px;background:#fff;border:2px solid var(--ink);border-radius:12px;padding:8px 13px;text-decoration:none;color:var(--ink);font-size:14px;box-shadow:2px 3px 0 rgba(43,58,50,.13);transition:transform .15s var(--ease),box-shadow .15s var(--ease);}
.unit-chip b{font-size:14.5px;}
.unit-chip .uc-live{font-size:12px;font-weight:800;background:var(--brand-soft);border-radius:999px;padding:1px 8px;color:var(--brand-deep);}
.unit-chip:hover{transform:translate(-1px,-3px);box-shadow:4px 5px 0 rgba(43,58,50,.18);}
.unit-block{margin:14px 0 26px;}
.unit-h{display:flex;align-items:center;gap:9px;font-size:17.5px;font-weight:800;margin:0 0 12px;flex-wrap:wrap;}
.unit-h .uh-bar{width:8px;height:22px;border-radius:4px;background:linear-gradient(180deg,var(--sun),var(--brand));flex:none;}
.unit-h .uc-count{font-size:12px;font-weight:800;background:var(--sun-soft);border:1.5px solid var(--sun);color:var(--sun-ink);border-radius:999px;padding:1px 9px;}

/* passage & audio */
.author-card{display:flex;gap:12px;align-items:flex-start;background:var(--brand-soft);border:2px solid var(--ink);border-radius:14px;padding:12px 16px;margin:0 0 14px;box-shadow:3px 4px 0 rgba(43,58,50,.13);}
.author-badge{flex:none;font-size:12px;font-weight:900;background:var(--brand);color:#fff;border-radius:8px;padding:3px 9px;border:2px solid var(--ink);white-space:nowrap;}
.author-body{flex:1;min-width:0;}
.author-body b{display:block;font-size:15.5px;margin-bottom:2px;}
.author-body p{font-size:14px;color:#4d483d;}
.t-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px;}
.chip.genre-chip{background:var(--brand-soft);border:2px solid var(--brand);color:var(--brand-deep);font-weight:800;}
.chip.audio-chip{background:var(--sun-soft);border:2px solid var(--sun);color:var(--sun-ink);font-weight:800;}
.genre-note{font-size:14px;color:#4d483d;background:var(--paper);border:1.5px dashed var(--hair2);border-radius:12px;padding:9px 14px;margin:0 0 14px;max-width:72ch;}
.genre-note b{color:var(--brand-deep);}
.no-passage{background:var(--sun);border-color:var(--ink);color:#fff;}
.audio-wrap{margin:2px 0 14px;}
.audio-wrap audio{width:100%;height:42px;border-radius:12px;outline:none;}
.passage-box{background:#fff;border:2px solid var(--ink);border-radius:16px;padding:22px 26px;box-shadow:var(--stick);}
.passage-p{font-size:17.5px;line-height:2.1;margin:0 0 20px;letter-spacing:.03em;}
.passage-p:last-child{margin-bottom:0;}
.passage-p.seg{cursor:pointer;padding:6px 8px;border-radius:8px;transition:background .15s;}
.passage-p.seg:hover{background:var(--sun-soft);}
.passage-p.seg .seg-play{float:right;font-size:14px;color:var(--sun-ink);opacity:.6;}
.passage-p.seg:hover .seg-play{opacity:1;}
/* translation block */
.trans-box{background:#fdfbf3;border:2px solid var(--ink);border-radius:16px;padding:20px 24px;box-shadow:var(--stick);}
.trans-box>p{font-size:16.5px;line-height:1.95;margin:0 0 14px;text-align:justify;}
.trans-box>p:last-child{margin-bottom:0;}
.trans-row{padding:9px 0;border-bottom:1px dashed var(--hair2);}
.trans-row:last-child{border-bottom:0;padding-bottom:2px;}
.tr-src{color:var(--muted);font-size:14px;margin:0;}
.tr-dst{font-weight:600;font-size:15.5px;margin:3px 0 4px;}
.passage-p .p-no{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:8px;background:var(--sun-soft);border:2px solid var(--ink);color:var(--sun-ink);font-size:12.5px;font-weight:800;margin-right:10px;transform:translateY(-2px);}
.translation-box{margin-top:16px;background:#f7f4ec;border:2px dashed #b8a98a;border-radius:16px;padding:20px 24px;}
.tr-title{font-size:13.5px;font-weight:800;color:#8a6d3b;margin:0 0 12px;letter-spacing:.04em;}
.translation-p{font-size:15.5px;line-height:1.9;margin:0 0 14px;color:#4d483d;}
.translation-p:last-child{margin-bottom:0;}
.translation-p .p-no{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:8px;background:#fff;border:2px solid #b8a98a;color:#8a6d3b;font-size:12.5px;font-weight:800;margin-right:10px;transform:translateY(-2px);}

/* footer */
.site-footer{position:relative;border-top:2px solid var(--ink);margin-top:52px;padding:28px 20px 46px;text-align:center;font-size:13.5px;color:#4d483d;background:#fff;}
.site-footer::before{content:'';position:absolute;top:-5px;left:0;right:0;height:5px;background:linear-gradient(90deg,#ef4444 0%,#f97316 14%,#eab308 28%,#22c55e 42%,#14b8a6 56%,#3b82f6 70%,#a855f7 85%,#ec4899 100%);}
.site-footer .muted{margin-top:4px;}

/* illustrations & icons */
.hero-art{margin:22px 0 0;}
.t-banner{margin:8px 0 16px;}
.sub-ic{display:inline-flex;align-items:center;}
.sub-ic-big{margin:6px 0 2px;}
.vcard{display:flex;gap:10px;align-items:flex-start;}
.vcard .vbody{flex:1;min-width:0;}
.vbadge{flex:none;width:36px;height:36px;border-radius:11px;background:var(--brand-soft);color:var(--brand);border:2px solid var(--ink);display:inline-flex;align-items:center;justify-content:center;font-weight:900;font-size:15px;margin-top:2px;transition:transform .2s var(--ease);}
.vcard:hover .vbadge{transform:rotate(-7deg) scale(1.1);background:var(--sun-soft);}
.unit-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:14px;}
.unit-card{background:#fff;border:2.5px solid var(--ink);border-radius:16px;padding:14px 16px;display:flex;gap:12px;align-items:flex-start;flex-wrap:wrap;box-shadow:var(--stick);transition:transform .18s var(--ease),box-shadow .18s var(--ease);}
.unit-card:hover{transform:translate(-2px,-3px);box-shadow:var(--stick-big);}
.unit-card .u-ic{flex:none;margin-top:2px;}
.unit-card .u-body{flex:1;min-width:0;}
.unit-card .u-body b{font-size:15px;}
.unit-card .ubar{height:9px;background:var(--paper);border:1.5px solid var(--ink);border-radius:99px;margin-top:8px;overflow:hidden;}
.unit-card .ubar i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--brand),var(--brand-bright));}
.u-side{flex:none;display:flex;flex-direction:column;align-items:flex-end;gap:6px;}
.u-count{font-size:12px;color:var(--muted);text-align:right;}

/* paragraph play buttons */
.p-play{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;margin-right:9px;border:2px solid var(--ink);border-radius:9px;background:var(--sun-soft);color:var(--sun-ink);font-size:12px;cursor:pointer;transition:all .15s var(--ease);vertical-align:middle;}
.p-play:hover{background:var(--sun);color:#fff;transform:translateY(-2px);}
.passage-p.playing{background:var(--sun-soft);border-radius:10px;}
.passage-p.playing .p-no{background:var(--sun);color:#fff;}
.passage-p .p-no{margin-right:8px;}

/* audio bar */
.audio-bar{display:flex;align-items:center;gap:12px;background:var(--brand-soft);border:2px solid var(--ink);border-radius:12px;padding:9px 14px;margin:2px 0 14px;box-shadow:2px 3px 0 rgba(43,58,50,.12);}
.ab-toggle{border:2px solid var(--ink);border-radius:10px;background:var(--sun);color:#fff;font-weight:800;font-size:13.5px;padding:5px 14px;cursor:pointer;box-shadow:0 3px 0 var(--ink);transition:all .12s var(--ease);}
.ab-toggle:hover{transform:translateY(-1px);}
.ab-toggle:active{transform:translateY(2px);box-shadow:0 1px 0 var(--ink);}
.ab-pos{font-family:var(--mono, Consolas);font-size:12.5px;color:var(--brand-deep);font-weight:700;}

/* ---------- 課前動畫（影片開場試點：video-intro） ---------- */
.video-intro{margin:0 0 16px;}
.video-tag{display:inline-block;background:var(--sun-soft);border:2px solid var(--ink);border-radius:999px;padding:3px 12px;font-size:.82rem;font-weight:700;color:var(--sun-ink);margin:0 0 8px;box-shadow:2px 3px 0 rgba(43,58,50,.12);}
.video-intro video{display:block;width:100%;max-width:100%;border:3px solid var(--ink);border-radius:14px;box-shadow:var(--stick);background:#000;}

/* ---------- 動畫繪本（文化經典試點：story-carousel） ---------- */
.story-carousel{margin:0 0 16px;}
.story-frame{position:relative;overflow:hidden;border-radius:14px;border:3px solid var(--ink);box-shadow:4px 5px 0 rgba(33,29,22,.9);background:#182420;aspect-ratio:16/9;}
.story-frame img.story-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .9s ease;}
.story-frame img.story-img.active{opacity:1;animation:storyKenBurns 9s ease-out forwards;}
.story-frame img.story-img.active:nth-child(even){animation-name:storyKenBurnsAlt;}
@keyframes storyKenBurns{0%{transform:scale(1) translate(0,0);}100%{transform:scale(1.09) translate(-1.5%,-2%);}}
@keyframes storyKenBurnsAlt{0%{transform:scale(1.08) translate(2%,1%);}100%{transform:scale(1) translate(0,0);}}
.story-play{position:absolute;right:12px;bottom:12px;width:46px;height:46px;border-radius:50%;border:2px solid var(--ink);background:var(--sun,#f07f2e);color:#fff;font-size:18px;line-height:1;cursor:pointer;box-shadow:2px 3px 0 rgba(33,29,22,.9);transition:transform .12s ease;}
.story-play:hover{transform:translateY(-1px);}
.story-play.on{background:var(--brand,#23634f);}
.story-dots{display:flex;gap:9px;justify-content:center;margin-top:11px;position:relative;z-index:2;}
.story-dot{width:13px;height:13px;border-radius:50%;border:2px solid var(--ink);background:#fff;cursor:pointer;padding:0;position:relative;touch-action:manipulation;-webkit-tap-highlight-color:transparent;}
.story-dot::after{content:'';position:absolute;inset:-9px;border-radius:50%;}
.story-dot.active{background:var(--sun,#f07f2e);transform:scale(1.15);}
.story-hint{font-size:12.5px;color:var(--brand-deep,#23634f);text-align:center;margin:7px 0 0;font-weight:600;}
.passage-p.story-now{background:rgba(240,127,46,.14);border-radius:10px;transition:background .4s ease;}
@media (prefers-reduced-motion: reduce){.story-frame img.story-img.active{animation:none;}.story-frame img.story-img{transition:none;}}
@media (max-width:640px){.story-frame{aspect-ratio:16/9;}.story-play{width:38px;height:38px;font-size:15px;}}

/* ═══════════════════════════════════════════════════════════════════════
   2026-10-02 學生體驗改良：sticky 目錄、上／下一課、相關課程擴充、
   互動快測、我的學習進度頁、快捷入口、列印樣式
   ═══════════════════════════════════════════════════════════════════════ */

/* ── header 新連結 ── */
.site-header .nav-my{background:var(--sun-soft);border:1.5px solid var(--sun);border-radius:999px;padding:3px 11px;font-weight:750;color:var(--sun-ink);text-decoration:none;white-space:nowrap;flex:none;}
.site-footer .ft-nav{margin-bottom:8px;font-weight:650;}

/* ── sticky 目錄（8 格長頁一撳跳轉；手機橫向滑動）── */
.toc{
  position:sticky;top:64px;z-index:40;display:flex;gap:6px;align-items:center;flex-wrap:nowrap;
  overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;
  background:rgba(253,251,245,.94);backdrop-filter:blur(8px);
  border:1.5px solid var(--hair2);border-radius:999px;
  padding:6px 8px;margin:14px 0 18px;box-shadow:0 2px 10px rgba(43,58,50,.07);
  /* flex-wrap:nowrap 要明寫：.toc 係 <nav>，食咗全局 nav{flex-wrap:wrap}，窄屏折兩行後 999px 圓角兩端變半圓，🎲掣剷出界 */
}
.toc::-webkit-scrollbar{display:none;}
.toc a{
  flex:none;font-size:13.5px;font-weight:700;color:var(--ink);text-decoration:none;
  padding:4px 10px;border-radius:999px;background:#fff;border:1px solid var(--hair);white-space:nowrap;
}
.toc a:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-deep);}
.toc .toc-random{flex:none;margin-left:auto;position:sticky;right:2px;border:1.5px solid var(--sun);background:var(--sun-soft);color:var(--sun-ink);border-radius:999px;padding:4px 10px;font-size:13.5px;cursor:pointer;font-weight:750;box-shadow:0 1px 4px rgba(43,58,50,.18);}
.blk h3.sec-h{scroll-margin-top:120px;}
#s-related{scroll-margin-top:120px;}

/* ── 上一課／下一課 ── */
.lesson-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:26px 0 10px;}
.lesson-nav .nav-card{
  display:flex;flex-direction:column;gap:3px;padding:13px 16px;background:#fff;
  border:2px solid var(--ink);border-radius:14px;text-decoration:none;color:inherit;
  transition:box-shadow .2s var(--ease),transform .2s var(--ease);
}
.lesson-nav .nav-card:hover{box-shadow:var(--stick-big);transform:translate(-1px,-2px);}
.lesson-nav .nav-card.next{text-align:right;align-items:flex-end;}
.lesson-nav .nav-card.disabled{border-style:dashed;border-color:var(--hair);background:transparent;}
.lesson-nav .nc-lbl{font-size:12.5px;font-weight:800;color:var(--brand);letter-spacing:.02em;}
.lesson-nav .nc-t{font-size:14.5px;font-weight:650;line-height:1.45;}
.lesson-nav .done-card{grid-column:1/-1;align-items:flex-start;border-color:var(--brand);background:var(--brand-soft);}
.lesson-nav .nc-btns{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px;}
.lesson-nav .nc-btn{font-size:13.5px;font-weight:750;padding:6px 13px;border-radius:999px;border:1.5px solid var(--brand);background:#fff;color:var(--brand-deep);text-decoration:none;cursor:pointer;}
.lesson-nav .nc-btn:hover{background:var(--brand);color:#fff;}
@media(max-width:640px){ .lesson-nav{grid-template-columns:1fr;} .lesson-nav .nav-card.next{text-align:left;align-items:flex-start;} }

/* ── 相關課程（卡片＋同級／同科 chips）── */
.rel-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px;margin-top:12px;}
.rel-card{display:block;padding:14px;background:#fff;border:1.5px solid var(--hair);border-radius:12px;text-decoration:none;color:inherit;transition:box-shadow .2s var(--ease),border-color .2s;}
.rel-card:hover{border-color:var(--brand);box-shadow:var(--stick);}
.rel-card .rc-t{font-weight:750;font-size:15px;margin-bottom:6px;color:var(--brand-deep);}
.rel-card .rc-d{font-size:13px;color:var(--muted);line-height:1.5;}
.rel-h{margin:20px 0 9px;font-size:14.5px;font-weight:800;color:var(--muted);letter-spacing:.02em;}
.rel-chips{display:flex;flex-wrap:wrap;gap:8px;}
.rel-chips a{display:inline-flex;align-items:baseline;gap:6px;font-size:13.5px;font-weight:700;text-decoration:none;color:var(--ink);background:#fff;border:1.5px solid var(--hair);border-radius:999px;padding:5px 12px;}
.rel-chips a:hover{border-color:var(--brand);background:var(--brand-soft);color:var(--brand-deep);}
.rel-chips a span{font-size:11.5px;color:var(--muted);font-weight:600;}

/* ── 互動快測（先自己答 → 揭答案 → 我對／我錯）── */
.quizlist{display:flex;flex-direction:column;gap:12px;}
.quiz{background:#fff;border:2px solid var(--ink);border-radius:14px;padding:15px 17px;transition:box-shadow .2s var(--ease);}
.quiz.revealed{box-shadow:var(--stick);}
.quiz.marked-ok{border-color:var(--good);}
.quiz.marked-bad{border-color:var(--bad);}
.quiz .q-text{font-weight:700;font-size:15.5px;line-height:1.6;margin-bottom:10px;}
.quiz .q-no{display:inline-block;background:var(--ink);color:#fff;font-size:12px;font-weight:800;border-radius:6px;padding:1px 8px;margin-right:8px;vertical-align:2px;}
.quiz .q-actions{margin-top:2px;}
.quiz .q-reveal,.quiz .q-ok,.quiz .q-bad{font-size:14px;font-weight:750;border-radius:999px;padding:7px 15px;cursor:pointer;border:1.5px solid var(--brand);background:#fff;color:var(--brand-deep);}
.quiz .q-reveal:hover{background:var(--brand);color:#fff;}
.quiz .q-ans{margin-top:12px;padding:12px 14px;background:var(--brand-soft);border-left:4px solid var(--brand);border-radius:0 10px 10px 0;font-size:15px;line-height:1.65;}
.quiz .q-ans[hidden],.quiz .q-mark[hidden],.quiz .q-actions[hidden]{display:none;}
.quiz .q-mark{margin-top:11px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13.5px;color:var(--muted);font-weight:650;}
.quiz .q-ok{border-color:var(--good);color:var(--good);}
.quiz .q-ok:hover{background:var(--good);color:#fff;}
.quiz .q-bad{border-color:var(--bad);color:var(--bad);}
.quiz .q-bad:hover{background:var(--bad);color:#fff;}
/* 2026-10-02 科目頁單元快測：外層 details 包住一套 .quiz 卡（互動照抄課頁） */
.unit-quiz{margin-top:16px;border:2px dashed var(--brand);border-radius:14px;padding:12px 16px;background:var(--brand-soft);}
.unit-quiz summary{cursor:pointer;font-weight:800;list-style:none;position:relative;padding-right:30px;display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.unit-quiz summary::after{content:'+ ';position:absolute;right:6px;color:var(--brand-deep);font-weight:900;font-size:19px;}
.unit-quiz[open] summary::after{content:'−';}
.unit-quiz .uc-count{font-size:12px;background:var(--brand);color:#fff;border-radius:999px;padding:2px 9px;font-weight:800;}
.unit-quiz .quiz{margin-top:10px;}
.unit-quiz>p.muted{margin:8px 0 0;font-size:13.5px;}
@media print{.unit-quiz{display:none;}}

/* ── 首頁快捷入口 ── */
.quick-actions{margin-top:4px;}
.qa-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center;}
.btn-primary{font-size:15px;font-weight:800;padding:10px 20px;border-radius:999px;border:2px solid var(--ink);background:var(--sun);color:var(--ink);cursor:pointer;box-shadow:var(--stick);}
.btn-primary:hover{transform:translate(-1px,-2px);box-shadow:var(--stick-big);}
.btn-ghost{display:inline-block;font-size:14.5px;font-weight:750;padding:9px 17px;border-radius:999px;border:1.5px solid var(--hair2);background:#fff;color:var(--ink);text-decoration:none;}
.btn-ghost:hover{border-color:var(--brand);background:var(--brand-soft);}

/* ── 我的學習進度頁 ── */
.my-metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;}
.my-metric{background:#fff;border:2px solid var(--ink);border-radius:14px;padding:14px 16px;box-shadow:var(--stick);}
.my-metric b{display:block;font-size:27px;font-weight:900;line-height:1.2;}
.my-metric span{font-size:12.5px;color:var(--muted);font-weight:650;}
.my-sub{background:#fff;border:1.5px solid var(--hair);border-radius:12px;padding:12px 15px;margin-bottom:10px;}
.my-sub .ms-top{display:flex;justify-content:space-between;gap:10px;font-weight:750;font-size:14.5px;margin-bottom:8px;}
.my-sub .ms-bar{height:9px;background:var(--hair);border-radius:999px;overflow:hidden;}
.my-sub .ms-bar i{display:block;height:100%;background:var(--brand-bright);border-radius:999px;}
.my-sub.ms-done{border-color:var(--good);background:var(--brand-soft);}
.wrong-item{background:#fff;border:1.5px solid var(--bad);border-left:5px solid var(--bad);border-radius:0 12px 12px 0;padding:12px 15px;margin-bottom:10px;}
.wrong-item .wi-q{font-weight:700;font-size:14.5px;margin-bottom:6px;}
.wrong-item .wi-a{font-size:14px;color:var(--muted);}
.wrong-item .wi-meta{font-size:12px;color:var(--muted);margin-top:7px;}
.wrong-item .wi-meta a{font-weight:700;}

/* ── 列印友善（學生會列印筆記）── */
@media print{
  :root{--paper:#fff;}
  body{background:#fff !important;background-image:none !important;font-size:11.5pt;line-height:1.5;}
  .site-header,.site-footer,.toc,.lesson-nav,#backToTop,#waShare,.hero-art,.t-banner,
  .q-actions,.q-mark,.done-btn,.quick-actions,.story-play,.story-dots,.story-hint,.p-play{display:none !important;}
  main{max-width:none;padding:0;}
  .blk{break-inside:avoid;page-break-inside:avoid;margin-bottom:14px;}
  .blk h3.sec-h{border-bottom:1.5pt solid #000;padding-bottom:3px;}
  .q-ans{display:block !important;}
  .q-ans[hidden]{display:block !important;}
  .tldr,.vcard,.quiz,.rel-card,.worked,.mrow{border:1pt solid #666 !important;box-shadow:none !important;}
  a{color:#000;text-decoration:none;}
  a[href^="/"]::after,a[href^="https://labzstudy.com"]::after{content:"";}
  .passage-box,.trans-box{columns:1;}
}

/* ---------- 2026-10-03 P1/P2 優化九項 ---------- */
/* P2-12 學段三色 tokens（貫穿 nav 點／卡片） */
:root{--stage-p:#2e7d32;--stage-j:#23634f;--stage-s:#b0532e;}
.site-header nav .nav-stage::before{content:'';display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:5px;vertical-align:1px;background:var(--stage-p);}
.site-header nav .nav-stage.st-j::before{background:var(--stage-j);}
.site-header nav .nav-stage.st-s::before{background:var(--stage-s);}

/* P1-4 生字卡自測 */
.vtools{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px;}
.vt-btn{font-size:12.5px;font-weight:750;border:1.5px solid var(--ink);background:#fff;color:var(--ink);border-radius:999px;padding:4px 12px;cursor:pointer;transition:all .15s var(--ease);}
.vt-btn:hover{transform:translateY(-1px);}
.vt-btn.on{background:var(--sun);border-color:var(--sun);}
.vgrid.hide-zh .vcard .vterm span,.vgrid.hide-en .vcard .vterm b{filter:blur(6px);transition:filter .2s var(--ease);}
.vgrid.hide-zh .vcard:hover .vterm span,.vgrid.hide-zh .vcard.revealed .vterm span,
.vgrid.hide-en .vcard:hover .vterm b,.vgrid.hide-en .vcard.revealed .vterm b{filter:none;}
.vgrid.hide-zh .vcard,.vgrid.hide-en .vcard{cursor:pointer;}
@media print{.vtools{display:none;}.vgrid.hide-zh .vcard .vterm span,.vgrid.hide-en .vcard .vterm b{filter:none;}}

/* P1-5 快測成績卡 */
.quiz-result{margin-top:14px;border:2px solid var(--brand);border-radius:14px;background:var(--brand-soft);padding:12px 16px;font-weight:750;display:flex;align-items:center;gap:12px;flex-wrap:wrap;animation:pop .45s var(--ease) both;}
.quiz-result b{font-size:20px;color:var(--brand-deep);}
.quiz-result .qr-redo{font-size:13.5px;font-weight:750;border:1.5px solid var(--brand);background:#fff;color:var(--brand-deep);border-radius:999px;padding:6px 14px;cursor:pointer;}
.quiz-result .qr-redo:hover{background:var(--brand);color:#fff;}

/* P1-6 單元進度 */
.uc-done{font-size:12px;background:var(--good);color:#fff;border-radius:999px;padding:2px 9px;font-weight:800;margin-left:6px;}
.unit-h .uc-done{margin-left:8px;}

/* P1-7 相關卡科目色 */
.rel-card{--rc:transparent;border-top:3px solid var(--rc);}
.rel-card .rc-ic,.rel-chips .rc-ic{display:inline-flex;vertical-align:-3px;margin-right:6px;}
.rel-chips a{--rc:transparent;border-left:3px solid var(--rc);padding-left:8px;}
.rel-chips a .rc-ic{vertical-align:-3px;}

/* P2-8 DSE 倒數 */
.dse-line{font-size:14.5px;font-weight:750;color:var(--brand-deep);margin-top:10px;min-height:1em;}

/* P2-9 閱讀時間＋捲動進度條 */
.toc .toc-meta{font-size:12px;color:var(--muted);font-weight:700;white-space:nowrap;align-self:center;}
.read-progress{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--sun),var(--brand));z-index:60;transition:width .08s linear;}

/* P2-10 搜尋熱門 chips（focus 空輸入時顯示喺結果框）＋科目色結果 */
.qres .q-chips{display:flex;gap:6px;flex-wrap:wrap;padding:10px 12px;}
.qres .q-chips .q-chip{font-size:12px;font-weight:700;border:1.5px solid var(--ink);border-radius:999px;background:#fff;color:var(--ink);padding:3px 10px;cursor:pointer;box-shadow:1.5px 1.5px 0 rgba(43,58,50,.14);}
.qres .q-chips .q-chip:hover{background:var(--sun-soft);transform:translateY(-1px);}
.qres .q-chips .q-chip-h{width:100%;font-size:12px;color:var(--muted);font-weight:750;}
.qres a{border-left:4px solid var(--rc,#f0ece1);}


/* ---------- 課外知識 Fun hub＋文章頁（2026-10-15 排版升級） ---------- */
.cat-astro{--cat:#3b6ea5;}
.cat-geo{--cat:#23634f;}
.cat-myth{--cat:#7c5fb0;}
.cat-facts{--cat:#b25a17;}
.fun-note{margin:-2px 0 18px;}
.fun-cats{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 24px;}
.fun-chip{display:inline-flex;align-items:center;gap:7px;border:2px solid var(--ink);border-top:4px solid var(--cat,var(--brand));border-radius:999px;padding:6px 14px 6px 12px;background:#fff;font-weight:800;font-size:14px;color:var(--ink);text-decoration:none;box-shadow:3px 4px 0 rgba(43,58,50,.14);transition:transform .2s var(--ease),box-shadow .2s var(--ease);}
.fun-chip:hover{transform:translate(-1px,-2px);box-shadow:5px 7px 0 rgba(43,58,50,.18);}
.fun-chip .fc-ic{font-size:16px;line-height:1;}
.fun-chip b{font-size:12px;background:var(--cat,var(--brand));color:#fff;border-radius:999px;padding:1px 8px;font-weight:800;}
.fun-sec{margin-bottom:26px;}
.fun-cat-h{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.fun-cat-h .fh-ic{font-size:23px;line-height:1;}
.fun-cat-h .fh-count{font-size:12.5px;font-weight:800;color:#fff;background:var(--cat,var(--brand));border-radius:999px;padding:2px 11px;transform:translateY(1px);}
.fun-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px;margin-top:14px;}
.fun-card{display:flex;flex-direction:column;background:#fff;border:2px solid var(--ink);border-top:5px solid var(--cat,var(--brand));border-radius:16px;overflow:hidden;text-decoration:none;color:var(--ink);box-shadow:var(--stick);transition:transform .2s var(--ease),box-shadow .2s var(--ease);}
.fun-card:hover{transform:translate(-2px,-3px);box-shadow:var(--stick-big);}
.fun-card .fc-img{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--paper);}
.fun-card .fc-img img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .35s var(--ease);}
.fun-card:hover .fc-img img{transform:scale(1.05);}
.fun-card .fc-body{display:flex;flex-direction:column;gap:7px;padding:12px 15px 14px;flex:1;}
.fun-card .fc-t{font-weight:800;font-size:15.5px;line-height:1.45;}
.fun-card .fc-d{font-size:13px;color:var(--muted);line-height:1.55;flex:1;}
.fun-card .fc-go{font-size:13px;font-weight:800;color:var(--cat,var(--brand));}
/* 文章頁 */
.fun-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px;}
.fun-badge{display:inline-flex;align-items:center;gap:6px;border:2px solid var(--cat,var(--brand));border-radius:999px;padding:3px 12px;font-size:13px;font-weight:800;text-decoration:none;color:var(--cat,var(--brand));background:#fff;transition:background .15s,color .15s;}
.fun-badge:hover{background:var(--cat,var(--brand));color:#fff;}
.fm-time{font-size:13px;color:var(--muted);font-weight:700;}
.fun-lead{font-size:18.5px;color:var(--brand-deep);font-weight:600;margin-top:4px;max-width:60ch;}
.fun-fig{margin:4px 0 20px;}
.fun-fig img{width:100%;border-radius:14px;border:2px solid var(--hair2);display:block;}
.fun-fig figcaption{font-size:13px;margin-top:7px;}
.fun-article .passage-box{margin-bottom:2px;}
.fun-fact{display:flex;gap:14px;align-items:flex-start;background:var(--sun-soft);border:2.5px solid var(--ink);border-radius:16px;padding:16px 18px;margin-top:22px;box-shadow:5px 6px 0 rgba(43,58,50,.15);}
.fun-fact .ff-ic{font-size:26px;line-height:1.1;}
.fun-fact .ff-h{font-weight:900;font-size:13.5px;color:var(--sun-ink);margin-bottom:3px;letter-spacing:.03em;}
.fun-fact p{font-weight:700;font-size:15.5px;margin:0;}
.fun-related{margin-top:24px;}
.fun-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px;}
.fun-nav .fn-card{display:flex;flex-direction:column;gap:3px;background:#fff;border:2px solid var(--ink);border-radius:14px;padding:12px 15px;text-decoration:none;color:var(--ink);box-shadow:3px 4px 0 rgba(43,58,50,.13);transition:transform .2s var(--ease),box-shadow .2s var(--ease);}
.fun-nav .fn-card:hover{transform:translate(-1px,-2px);box-shadow:5px 7px 0 rgba(43,58,50,.17);}
.fun-nav .fn-d{font-size:12px;font-weight:800;color:var(--muted);}
.fun-nav .fn-t{font-weight:800;font-size:14.5px;line-height:1.45;}
.fun-nav .fn-card.next{text-align:right;align-items:flex-end;}
.fun-back{margin-top:16px;font-weight:700;}
@media(max-width:640px){.fun-nav{grid-template-columns:1fr;}.fun-nav .fn-card.next{text-align:left;align-items:flex-start;}.fun-grid{grid-template-columns:1fr;}.fun-fact{padding:14px 15px;}.fun-lead{font-size:17px;}}

/* 升學指南 guidance（2026-10-15 排版升級）：四卡 2×2 欄距 variant＋外連箭頭 */
.rel-grid.g2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));}
.gv-ext{font-size:12px;color:var(--muted);font-weight:600;}

/* ── 升學日曆＋學校資料庫骨架＋課程比較（2026-10-17 Phase 1）── */
.cal-strip{display:grid;grid-template-columns:repeat(auto-fill,minmax(235px,1fr));gap:10px;margin:12px 0 4px;}
.cal-chip{display:flex;flex-direction:column;gap:4px;padding:12px 14px;border:1.5px solid var(--hair);border-left:4px solid var(--cat,#666);border-radius:10px;background:var(--card);text-decoration:none;color:var(--ink);transition:transform .15s var(--ease),box-shadow .15s var(--ease);}
.cal-chip:hover{transform:translateY(-2px);box-shadow:var(--stick);}
.cal-chip .cc-date{font-size:12.5px;color:var(--muted);font-weight:600;}
.cal-chip b{font-size:14.5px;line-height:1.35;}
.cal-chip i{font-style:normal;font-size:12.5px;color:var(--cat,#666);font-weight:700;}
.cal-legend{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
.cal-month{margin:20px 0 8px;font-size:17px;}
.cal-ev{display:flex;gap:14px;padding:12px 14px;border:1px solid var(--hair);border-left:4px solid var(--cat,#666);border-radius:10px;background:var(--card);margin-bottom:8px;}
.ce-date{min-width:96px;font-weight:700;color:var(--cat,#666);font-size:14px;}
.ce-body b{font-size:15px;}
.ce-body p{margin:4px 0;font-size:13.5px;color:#4d483d;}
.ce-src{font-size:12.5px;font-weight:600;}
.cal-badge{display:inline-block;margin-left:6px;padding:1px 7px;border-radius:99px;font-size:11px;font-weight:700;background:var(--sun-soft);color:var(--sun-ink);border:1px solid #e8c98a;vertical-align:2px;white-space:nowrap;}
.cal-badge.cal-unoff{background:#eef2f6;color:#475569;border-color:#c5cedb;}
.cal-catnote{border-left:3px solid var(--cat,#666);padding:2px 0 2px 10px;margin:6px 0;font-size:14px;color:#4d483d;}
.updates-list{list-style:none;margin:8px 0 0;padding:0;}
.updates-list li{padding:7px 0;border-bottom:1px dashed var(--hair);font-size:14.5px;display:flex;gap:10px;align-items:baseline;flex-wrap:wrap;}
.updates-list li:last-child{border-bottom:none;}
.upd-date{font-size:12px;font-weight:700;color:#fff;background:var(--brand);border-radius:6px;padding:1px 6px;white-space:nowrap;}
.cmp{width:100%;border-collapse:collapse;font-size:13.5px;background:var(--card);}
.cmp th,.cmp td{border:1px solid var(--hair);padding:8px 10px;text-align:left;vertical-align:top;line-height:1.45;}
.cmp thead th{background:#f3eee0;font-size:13px;}
.cmp tbody th{background:#faf8f3;white-space:nowrap;font-size:13px;}
@media(max-width:640px){.cal-ev{flex-direction:column;gap:4px;}.ce-date{min-width:0;}}

/* ── Hero「今日一課」卡（方案 B，2026-10-17 用戶揀）── */
.hero-flex{display:flex;gap:28px;align-items:center;margin-top:12px;flex-wrap:wrap;}
.hf-left{flex:1 1 340px;}
.lesson-card{flex:0 1 352px;position:relative;background:var(--card);border:2.5px solid var(--ink);border-radius:16px;box-shadow:var(--stick-big);padding:16px 18px 14px;}
.lc-shuffle{position:absolute;top:-13px;right:14px;background:var(--sun);color:#fff;font-size:11.5px;font-weight:800;border:2px solid var(--ink);border-radius:99px;padding:2px 10px;}
.lc-top{display:flex;align-items:center;gap:8px;margin-bottom:8px;flex-wrap:wrap;}
.lc-badge{background:var(--brand-soft);color:var(--brand-deep);font-size:12px;font-weight:800;border-radius:7px;padding:2px 9px;}
.lc-badge.alt{background:var(--sun-soft);color:var(--sun-ink);}
.lc-kicker{font-size:11px;font-weight:800;letter-spacing:1px;color:var(--muted);margin-bottom:4px;text-transform:uppercase;}
.lc-title{font-size:17.5px;font-weight:800;line-height:1.4;margin-bottom:6px;}
.lc-tldr{font-size:13.5px;color:#4d483d;line-height:1.6;margin-bottom:12px;}
.lc-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap;}
.lc-go{display:inline-block;background:var(--brand);color:#fff;font-size:13.5px;font-weight:800;text-decoration:none;border-radius:10px;padding:7px 14px;box-shadow:2px 3px 0 rgba(27,77,62,.35);}
.lc-reroll{font-size:12.5px;font-weight:700;color:var(--muted);background:none;border:none;cursor:pointer;text-decoration:underline;font-family:inherit;padding:0;}
@media(max-width:760px){.lesson-card{flex:1 1 100%;}}

/* ── 闊版桌面（2026-10-18 用戶揀 1440 fluid；同日 2000px 螢幕 UAT 捉：置中 cap 令標題同正文左緣錯位——改閱讀欄＋left-anchor 制）──
   全部包入 min-width:1200px：1199px 以下（手機／平板）零改動。
   ① 課文／範文／fun 文章頁（body.read）＝閱讀欄 1160，標題正文全部齊左；
   ② 其他闊殼頁嘅純文字塊 left-anchor cap（齊左唔置中，同標題同邊）；
   ③ EN／/hans/ 共用本 CSS 一次過生效。 ── */
@media(min-width:1200px){
  main{max-width:1440px;padding-left:36px;padding-right:36px;}
  .hrow{max-width:1480px;}
  /* 2026-10-23 用戶指示「大部份頁面內容都無做返寬頁面, 你處理」——剷 82ch/110ch 內容 cap 同 body.read 1160 閱讀欄
     （取代 e8da6cdf 10/18 嘅閱讀闘決定）：worked/steps/mistakes/takeaways/pathlist/cal/body.read 全部撐滿 1440 欄，
     left-anchor 齊左照舊；<1200px 窄屏零改動。 */
}