/* 教育心理學課後複習：各次共用樣式（與 Google 文件版同一份內容）
   One centered reading column, serif headings, slides with a thin line border and a caption below.
   Single light theme on purpose: the page is also embedded in the course's Google Site. */
:root{
  color-scheme:light;
  --bg:#FFFFFF; --ink:#1F1D1B; --soft:#45413D; --muted:#6B655E; --line:#E8E4DF; --rule:#D6CFC7; --tint:#F7F5F2;
  --accent:#B8442F; --hl:#FBE3A4; --note-bg:#FFF8E2; --note-line:#E7D3A2; --slide-line:#444444;
  --font-serif:"Noto Serif TC","Songti TC","PMingLiU",serif;
  --font-sans:"Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif;
  --font-name:"PingFang TC","Hiragino Sans CNS","Noto Sans CJK TC","MingLiU-ExtB","SimSun-ExtB","Microsoft JhengHei",serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font-sans);font-size:112.5%;line-height:1.9;letter-spacing:.01em;
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
p,li{margin:0}
/* 標題只在詞組之間（build.py 依斷詞插入的 <wbr>）、標點或空格處換行，不把詞拆開；過長時仍可斷行 */
h1,h2,h3{word-break:keep-all;overflow-wrap:anywhere}
/* 長英文字可加連字號斷字，減少手機窄欄的行尾空白 */
[lang=en]{-webkit-hyphens:auto;hyphens:auto}
a{color:var(--accent);text-underline-offset:3px}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:3px}
::selection{background:var(--hl)}
.name{font-family:var(--font-name)}
img{max-width:100%}

/* page layout: collapsible week sidebar + reading column */
.layout{max-width:42rem;margin:0 auto}
.post{min-width:0;padding-block:24px 72px}
.side{padding-top:16px}
.side-box{background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 1px 3px rgba(40,30,20,.06)}
.side-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 10px 10px 16px}
.side-title{font-weight:700;font-size:1.05rem;color:var(--accent)}
.side-toggle{font:inherit;font-size:.9rem;color:var(--soft);background:var(--tint);border:1px solid var(--line);border-radius:999px;padding:4px 14px;min-height:40px;cursor:pointer}
.side-toggle:hover{color:var(--accent);border-color:var(--accent)}
.side-list{padding:0 12px 14px;display:grid;gap:6px}
.layout.folded .side-list{display:none}
/* one week = one <details>; the current week starts open */
.wk>summary{cursor:pointer;font-weight:700;font-size:1rem;color:var(--ink);padding:8px 6px;border-radius:8px;list-style:none;display:flex;gap:8px;align-items:baseline}
.wk>summary::-webkit-details-marker{display:none}
.wk>summary::before{content:"▸";color:var(--muted);transition:transform .15s;display:inline-block}
.wk[open]>summary::before{transform:rotate(90deg)}
.wk>summary:hover{color:var(--accent)}
.wk.on>summary{color:var(--accent)}
.wk.off{display:flex;justify-content:space-between;align-items:baseline;gap:8px;padding:8px 6px;color:var(--muted);font-size:.95rem}
.soon{font-size:.875rem;color:var(--muted)}
/* numbered sections with a connecting line, like a stepper */
.secs{list-style:none;margin:4px 0 6px;padding:0 0 0 4px;display:grid;gap:2px}
.secs>li{position:relative}
.secs>li:not(:last-child)::after{content:"";position:absolute;left:15px;top:28px;bottom:-4px;width:2px;background:#F0D9D3}
.secs a{color:var(--soft);text-decoration:none}
.sec{display:flex;gap:10px;align-items:flex-start;padding:4px 4px;border-radius:8px;line-height:1.5;font-size:.95rem}
.sec .n{flex:none;width:24px;height:24px;border-radius:50%;border:2px solid #E7B3A8;color:var(--accent);font-weight:700;font-size:.8rem;display:grid;place-items:center;background:#fff;position:relative;z-index:1}
.sec .t{padding-top:1px}
.sec:hover .t{color:var(--accent)}
.secs>li.active>.sec .n{background:var(--accent);border-color:var(--accent);color:#fff}
.secs>li.active>.sec .t{color:var(--ink);font-weight:700}
.subs{list-style:none;margin:0;padding:2px 0 6px 38px;display:none;gap:0}
.secs>li.active>.subs{display:grid}
.subs a{display:block;padding:3px 0;line-height:1.5;color:var(--muted);font-size:.875rem}
.subs a:hover,.subs a.active{color:var(--accent)}
@media (min-width:1024px){
  .layout{max-width:none;display:grid;grid-template-columns:17.5rem minmax(0,48rem);gap:48px;justify-content:center}
  .side{position:sticky;top:0;align-self:start;max-height:100vh;overflow-y:auto;padding-block:32px}
  .post{padding-block:40px 72px}
  .toc{display:none} /* the sidebar already lists the sections */
  /* folded: the sidebar shrinks to a small floating button and the article takes the full, centered width */
  .layout.folded{grid-template-columns:minmax(0,52rem)}
  .layout.folded .side{position:fixed;top:16px;left:16px;padding:0;max-height:none;z-index:10}
}
@media (min-width:1024px) and (max-width:1279px){
  .layout.folded{padding-left:190px} /* keep the floating button clear of the article */
}
.post-head{display:grid;gap:14px;margin-bottom:32px}
.tag{font-size:1rem;color:var(--accent);font-weight:700}
.tag .crumb{color:var(--muted);font-weight:500}
.tag .sep{color:var(--muted);font-weight:500;margin:0 .5em}
.post h1{font-family:var(--font-serif);font-size:clamp(1.8rem,5.2vw,2.5rem);line-height:1.3;font-weight:700;text-wrap:balance;margin:0}
.dek{font-size:1.1rem;color:var(--soft);line-height:1.8}
.byline{display:flex;flex-wrap:wrap;gap:4px 14px;font-size:1rem;color:var(--muted);font-style:italic;padding-top:6px}

.body{display:grid;gap:1.15em;counter-reset:sec}
/* each table-of-contents entry is a chapter: divider line + "第 N 節" chip matching the TOC numbers */
.body h2{font-family:var(--font-serif);font-size:1.6rem;line-height:1.4;margin:2.2em 0 .1em;padding-top:1.3em;border-top:2px solid var(--rule);text-wrap:balance;counter-increment:sec}
.body h2::before{content:"第 " counter(sec) " 節";display:block;width:fit-content;font-family:var(--font-sans);font-size:1rem;font-weight:700;letter-spacing:.06em;color:#fff;background:var(--accent);border-radius:6px;padding:2px 12px;margin-bottom:.55em}
.body h2.plain{counter-increment:none}
.body h2.plain::before{content:none}
.body h3{font-family:var(--font-serif);font-size:1.25rem;line-height:1.45;margin:1em 0 0;text-wrap:balance}
.body ul,.body ol{margin:0;padding-left:1.4em;display:grid;gap:.4em}
.body li::marker{color:var(--accent)}
.body strong{font-weight:700}
.mark{background:linear-gradient(transparent 58%,var(--hl) 58%)}

/* slides: a thin line border on the image itself, caption underneath */
.slide{margin:.6em 0;display:grid;gap:8px}
.slide img{display:block;width:100%;height:auto;border:1.5px solid var(--slide-line);background:#fff}
.slide figcaption{font-size:1rem;color:var(--soft);line-height:1.7;display:flex;gap:8px;align-items:baseline;justify-content:center;text-align:center}
.slide figcaption .nw{white-space:nowrap}
.slide figcaption::before{content:"投影片";flex:none;font-size:1rem;font-weight:700;color:#fff;background:var(--soft);border-radius:4px;padding:0 6px;line-height:1.7}

/* in-article boxes */
.toc{background:var(--tint);border-radius:8px;padding:18px 22px}
.toc p{font-weight:700;margin-bottom:6px;color:var(--accent)}
.toc ol{display:grid;gap:2px}
.toc a{color:var(--soft);text-decoration:none}
.toc a:hover{color:var(--accent);text-decoration:underline}
.note{background:var(--note-bg);border:1px solid var(--note-line);border-radius:6px;padding:14px 18px;display:grid;gap:4px}
.note .t{font-weight:700}

.tbl{overflow-x:auto}
table{border-collapse:collapse;width:100%;line-height:1.65}
th,td{border:1px solid var(--rule);padding:8px 10px;text-align:left;vertical-align:top}
th{background:#EEEBE6;font-weight:700}
td:first-child{font-weight:700;width:36%}

.sources{font-size:1rem;color:var(--soft)}
.post-foot{margin-top:48px;padding-top:18px;border-top:1px solid var(--rule);font-size:1rem;color:var(--muted)}

/* home: one card per week (date, topic, section outline) + upcoming weeks */
.home{max-width:56rem;margin:0 auto;padding-block:40px 72px;display:grid;gap:28px}
.home-head{display:grid;gap:10px;max-width:42rem}
.home h1{font-family:var(--font-serif);font-size:clamp(2rem,5vw,2.6rem);line-height:1.25;margin:0}
.home .intro{color:var(--soft)}
.wlist{display:grid;gap:20px}
.wcard{display:grid;grid-template-columns:minmax(0,1fr);background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  text-decoration:none;color:var(--ink);box-shadow:0 1px 3px rgba(40,30,20,.06);transition:box-shadow .15s,border-color .15s}
.wcard:hover{border-color:#E7B3A8;box-shadow:0 6px 18px rgba(40,30,20,.10)}
.wbody{display:grid;gap:8px;padding:22px 24px 24px;align-content:start}
.wmeta{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.wnum{font-weight:700;color:#fff;background:var(--accent);border-radius:999px;padding:2px 12px;font-size:1rem}
.wdate{color:var(--muted);font-size:1rem}
.wcard h2{font-family:var(--font-serif);font-size:1.6rem;line-height:1.35;margin:4px 0 0}
.wtitle{color:var(--soft)}
.wsecs{margin:6px 0 0;padding-left:1.6em;display:grid;gap:2px;color:var(--soft);font-size:1rem;line-height:1.6}
.wsecs li::marker{color:var(--accent);font-weight:700}
.wgo{justify-self:start;margin-top:10px;font-weight:700;color:#fff;background:var(--accent);border-radius:999px;padding:8px 18px;min-height:44px;display:inline-flex;align-items:center}
.wcard:hover .wgo{background:#9C3826}
.wsoon-row{display:grid;grid-template-columns:repeat(auto-fill,minmax(12rem,1fr));gap:12px}
.wcard.off{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;box-shadow:none;background:var(--tint);border-style:dashed}
.wcard.off .wnum{background:#B9B2AA}
.wsoon{color:var(--muted);font-size:1rem}
@media (min-width:860px){
  .wsecs{grid-template-columns:1fr 1fr;grid-template-rows:repeat(var(--rows,5),auto);grid-auto-flow:column;column-gap:32px} /* two columns, read top-down */
}