/* 財務學習站樣式。色彩沿用 dataviz 參考調色盤（已驗證），淺色／深色各自選色，不是自動反相。 */
:root {
  color-scheme: light;
  --bg: #f9f9f7; --surface: #fcfcfb; --raise: #ffffff;
  --ink: #0b0b0b; --ink2: #52514e; --muted: #898781;
  --line: #e1e0d9; --axis: #c3c2b7; --ring: rgba(11,11,11,.10);
  --accent: #256abf; --accent-ink: #1c5cab; --accent-soft: #e6f0fc; --on-accent: #ffffff;
  --s1: #2a78d6; --s2: #eb6834; --s3: #1baf7a; --s4: #eda100;
  --good: #006300; --warn: #8a5a00; --bad: #b02a2a;
  --good-bg: #e8f5e8; --warn-bg: #fdf3dc; --bad-bg: #fbe9e9; --fact-bg: #eef1f6;
  --lv0: #86b6ef; --lv1: #5598e7; --lv2: #2a78d6; --lv3: #1c5cab; --lv4: #104281;
  --shadow: 0 1px 2px rgba(11,11,11,.06);
}
@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) {
    color-scheme: dark;
    --bg: #0d0d0d; --surface: #1a1a19; --raise: #222220;
    --ink: #ffffff; --ink2: #c3c2b7; --muted: #898781;
    --line: #2c2c2a; --axis: #383835; --ring: rgba(255,255,255,.10);
    --accent: #256abf; --accent-ink: #6da7ec; --accent-soft: #14253a; --on-accent: #ffffff;
    --s1: #3987e5; --s2: #d95926; --s3: #199e70; --s4: #c98500;
    --good: #4cc04c; --warn: #f0b64a; --bad: #f08a8a;
    --good-bg: #14261a; --warn-bg: #2a2110; --bad-bg: #2b1616; --fact-bg: #1c2026;
    --lv0: #86b6ef; --lv1: #5598e7; --lv2: #3987e5; --lv3: #2a78d6; --lv4: #1c5cab;
    --shadow: none;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0d0d0d; --surface: #1a1a19; --raise: #222220;
  --ink: #ffffff; --ink2: #c3c2b7; --muted: #898781;
  --line: #2c2c2a; --axis: #383835; --ring: rgba(255,255,255,.10);
  --accent: #256abf; --accent-ink: #6da7ec; --accent-soft: #14253a; --on-accent: #ffffff;
  --s1: #3987e5; --s2: #d95926; --s3: #199e70; --s4: #c98500;
  --good: #4cc04c; --warn: #f0b64a; --bad: #f08a8a;
  --good-bg: #14261a; --warn-bg: #2a2110; --bad-bg: #2b1616; --fact-bg: #1c2026;
  --lv0: #86b6ef; --lv1: #5598e7; --lv2: #3987e5; --lv3: #2a78d6; --lv4: #1c5cab;
  --shadow: none;
}

* { box-sizing: border-box; }
html { font-size: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  line-height: 1.75; -webkit-text-size-adjust: 100%;
}
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
main.wrap { padding-top: 24px; padding-bottom: 56px; min-height: 60vh; outline: none; }
h1, h2, h3, h4 { line-height: 1.35; margin: 0 0 .5em; text-wrap: balance; }
.lead, .sub, .prose p { text-wrap: pretty; }
h1 { font-size: 1.9rem; letter-spacing: .01em; }
h2 { font-size: 1.35rem; margin-top: 1.6em; }
h3 { font-size: 1.1rem; margin-top: 1.3em; }
p { margin: 0 0 1em; }
a { color: var(--accent-ink); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
code { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; background: var(--fact-bg); padding: .05em .35em; border-radius: 4px; font-size: .92em; }
:focus-visible { outline: 3px solid var(--accent-ink); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--accent); color: var(--on-accent); padding: 8px 14px; z-index: 100; }
.skip:focus { left: 8px; top: 8px; }
.sub { color: var(--ink2); }
.small { font-size: .875rem; }

/* 頂部導覽 */
.topbar { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.bar { display: flex; align-items: center; gap: 12px; min-height: 56px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--ink); text-decoration: none; font-size: 1.05rem; }
.logo { width: 22px; height: 22px; border-radius: 6px; background: var(--accent); position: relative; }
.logo::after { content: ""; position: absolute; left: 4px; right: 4px; bottom: 5px; height: 2px; background: #fff; transform: rotate(-32deg); transform-origin: left; border-radius: 2px; }
nav { margin-left: auto; display: flex; align-items: center; gap: 2px; flex-wrap: wrap; }
nav a { color: var(--ink2); text-decoration: none; padding: 6px 10px; border-radius: 8px; font-size: .95rem; }
nav a:hover { background: var(--accent-soft); color: var(--ink); }
nav a[aria-current="page"] { color: var(--ink); background: var(--accent-soft); font-weight: 600; }
.theme-btn, .menu-btn { border: 1px solid var(--line); background: var(--surface); color: var(--ink); border-radius: 8px; padding: 5px 10px; cursor: pointer; font: inherit; }
.menu-btn { display: none; margin-left: auto; }
@media (max-width: 860px) {
  .menu-btn { display: block; }
  nav { display: none; position: absolute; top: 56px; left: 0; right: 0; background: var(--surface); border-bottom: 1px solid var(--line); padding: 8px 12px 12px; flex-direction: column; align-items: stretch; }
  nav.open { display: flex; }
  nav a, .theme-btn { padding: 10px 12px; text-align: left; }
}

/* 版面元件 */
.hero { padding: 28px 0 8px; }
.hero h1 { font-size: 2.3rem; max-width: 18em; }
.hero .lead { font-size: 1.1rem; color: var(--ink2); max-width: 40em; }
.btn { display: inline-flex; align-items: center; gap: 6px; background: var(--accent); color: var(--on-accent); border: 0; border-radius: 10px; padding: 10px 18px; font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; }
.btn:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; color: var(--accent-ink); border: 1px solid var(--line); }
.btn.sm { padding: 5px 12px; font-size: .9rem; border-radius: 8px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.grid { display: grid; gap: 16px; }
.g2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.g3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.g4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 18px; box-shadow: var(--shadow); }
a.card { display: block; color: inherit; text-decoration: none; }
a.card:hover { border-color: var(--accent); }
.card h3 { margin-top: 0; }
.badge { display: inline-flex; align-items: center; gap: 6px; font-size: .8rem; color: var(--ink2); }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.lv0 { background: var(--lv0); } .lv1 { background: var(--lv1); } .lv2 { background: var(--lv2); } .lv3 { background: var(--lv3); } .lv4 { background: var(--lv4); }
.bar-track { height: 8px; border-radius: 4px; background: var(--accent-soft); overflow: hidden; }
.bar-fill { height: 100%; background: var(--accent); border-radius: 4px; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-top: 2em; }
.section-head h2 { margin: 0; }

/* 學習地圖 */
.level { margin-top: 28px; }
.level-head { display: flex; align-items: center; gap: 10px; }
.lesson-list { list-style: none; margin: 10px 0 0; padding: 0; display: grid; gap: 8px; }
.lesson-item { display: flex; align-items: center; gap: 12px; padding: 12px 14px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; color: inherit; text-decoration: none; }
.lesson-item:hover { border-color: var(--accent); }
.lesson-item .no { font-variant-numeric: tabular-nums; color: var(--ink2); min-width: 2.5em; font-weight: 600; }
.lesson-item .t { flex: 1; }
.lesson-item .m { color: var(--ink2); font-size: .85rem; white-space: nowrap; }
.check { width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--axis); display: grid; place-items: center; font-size: .75rem; flex: none; }
.check.on { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }

/* 課程頁 */
.lesson { max-width: 46rem; }
.crumb { color: var(--ink2); font-size: .9rem; margin-bottom: 8px; }
.lesson h1 { margin-bottom: .3em; }
.meta { display: flex; gap: 14px; flex-wrap: wrap; color: var(--ink2); font-size: .9rem; margin-bottom: 18px; }
.goals { background: var(--accent-soft); border-radius: 12px; padding: 14px 18px; margin: 16px 0 8px; }
.goals h2 { margin: 0 0 .4em; font-size: 1rem; }
.goals ul { margin: 0; padding-left: 1.2em; }
.prose h2 { border-top: 1px solid var(--line); padding-top: 1em; }
.prose ul, .prose ol { padding-left: 1.4em; margin: 0 0 1em; }
.prose li { margin-bottom: .35em; }
.formula { background: var(--fact-bg); border-radius: 10px; padding: 10px 16px; font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: .95rem; overflow-x: auto; margin: 0 0 1em; }
.callout { border-left: 4px solid var(--accent); background: var(--fact-bg); border-radius: 0 10px 10px 0; padding: 10px 14px; margin: 0 0 1em; }
.callout .tag { display: inline-block; font-weight: 700; font-size: .8rem; margin-right: 8px; }
.callout.tip { border-color: var(--good); background: var(--good-bg); } .callout.tip .tag { color: var(--good); }
.callout.warn { border-color: var(--warn); background: var(--warn-bg); } .callout.warn .tag { color: var(--warn); }
.callout.fact .tag { color: var(--accent-ink); }
.callout .src { display: block; font-size: .82rem; color: var(--ink2); margin-top: 4px; }
.example { border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; margin: 0 0 1em; background: var(--surface); }
.example > strong { display: block; margin-bottom: 4px; }
table { border-collapse: collapse; width: 100%; font-size: .93rem; margin: 0 0 1em; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 600; color: var(--ink2); background: var(--fact-bg); }
td.n, th.n { text-align: right; font-variant-numeric: tabular-nums; }
.tbl-wrap { overflow-x: auto; }
.pitfalls li::marker { color: var(--warn); }
.videos { list-style: none; padding: 0; display: grid; gap: 6px; }
.videos a { display: flex; gap: 8px; align-items: baseline; }
.src-list { font-size: .92rem; }

/* 測驗 */
.quiz { margin-top: 2em; border: 1px solid var(--line); border-radius: 14px; padding: 18px; background: var(--surface); }
.q { margin-bottom: 20px; border: 0; padding: 0; }
.q legend { font-weight: 600; margin-bottom: 8px; padding: 0; }
.opt { display: flex; gap: 10px; align-items: flex-start; padding: 9px 12px; border: 1px solid var(--line); border-radius: 10px; margin-bottom: 6px; cursor: pointer; background: var(--raise); }
.opt:hover { border-color: var(--accent); }
.opt input { margin-top: .45em; }
.opt.right { border-color: var(--good); background: var(--good-bg); }
.opt.wrong { border-color: var(--bad); background: var(--bad-bg); }
.why { font-size: .92rem; color: var(--ink2); margin: 6px 0 0; padding: 8px 12px; background: var(--fact-bg); border-radius: 8px; }
.verdict { font-weight: 700; margin-right: 6px; }
.verdict.ok { color: var(--good); } .verdict.no { color: var(--bad); }
.nav-lesson { display: flex; justify-content: space-between; gap: 12px; margin-top: 28px; flex-wrap: wrap; }

/* 工具 */
.tool-layout { display: grid; grid-template-columns: minmax(250px, 320px) 1fr; gap: 20px; align-items: start; }
@media (max-width: 900px) { .tool-layout { grid-template-columns: 1fr; } }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 16px; }
.field { margin-bottom: 12px; }
.field label { display: block; font-size: .9rem; font-weight: 600; margin-bottom: 4px; }
.field small { display: block; color: var(--ink2); font-size: .8rem; margin-top: 3px; line-height: 1.5; }
.inp { display: flex; align-items: center; gap: 6px; }
input[type="number"], input[type="text"], input[type="date"], select, textarea {
  width: 100%; font: inherit; color: var(--ink); background: var(--raise); border: 1px solid var(--axis); border-radius: 8px; padding: 7px 10px;
}
textarea { min-height: 4.5em; resize: vertical; line-height: 1.6; }
input[type="range"] { width: 100%; accent-color: var(--accent); }
.suffix { color: var(--ink2); font-size: .9rem; white-space: nowrap; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.tile { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; }
.tile .l { font-size: .82rem; color: var(--ink2); }
.tile .v { font-size: 1.5rem; font-weight: 700; line-height: 1.3; word-break: break-word; }
.tile .d { font-size: .8rem; color: var(--ink2); }
.st { font-weight: 700; } .st.ok { color: var(--good); } .st.mid { color: var(--warn); } .st.no { color: var(--bad); }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 14px; flex-wrap: wrap; }
.tabs button { border: 0; background: transparent; padding: 8px 14px; font: inherit; color: var(--ink2); cursor: pointer; border-bottom: 3px solid transparent; }
.tabs button[aria-selected="true"] { color: var(--ink); border-color: var(--accent); font-weight: 600; }
.note { font-size: .88rem; color: var(--ink2); }

/* 圖表 */
.chart-card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 14px 14px 10px; margin-bottom: 16px; }
.chart-card h3 { margin: 0 0 2px; font-size: 1rem; }
.chart-card .sub { margin: 0 0 8px; font-size: .85rem; }
.chart { position: relative; outline: none; }
.chart:focus-visible { outline: 3px solid var(--accent-ink); }
.svg-host { width: 100%; }
.svg-host svg { display: block; width: 100%; height: auto; overflow: visible; }
.legend { list-style: none; display: flex; gap: 16px; flex-wrap: wrap; margin: 0 0 6px; padding: 0; font-size: .85rem; color: var(--ink2); }
.legend li { display: flex; align-items: center; gap: 6px; }
.key-line { display: inline-block; width: 16px; height: 3px; border-radius: 2px; }
.key-box { display: inline-block; width: 10px; height: 10px; border-radius: 2px; }
.tip { position: absolute; top: 6px; pointer-events: none; background: var(--raise); border: 1px solid var(--axis); border-radius: 10px; padding: 8px 10px; font-size: .82rem; box-shadow: 0 4px 14px rgba(0,0,0,.14); min-width: 150px; z-index: 5; }
.tip .th { color: var(--ink2); margin-bottom: 4px; }
.tip .tr { display: flex; align-items: center; gap: 8px; justify-content: space-between; }
.tip .tr b { font-size: .95rem; }
.tip .tn { display: flex; align-items: center; gap: 6px; color: var(--ink2); }
.twin { margin-top: 6px; font-size: .88rem; }
.twin summary { cursor: pointer; color: var(--ink2); }
.twin .tbl-wrap { max-height: 260px; overflow: auto; margin-top: 6px; }
svg text { font-family: inherit; fill: var(--ink2); font-size: 11.5px; }
svg .grid-l { stroke: var(--line); stroke-width: 1; }
svg .axis-l { stroke: var(--axis); stroke-width: 1; }
svg .lbl { fill: var(--ink2); }

/* 名詞庫、其他 */
.search { max-width: 30rem; margin-bottom: 14px; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.chip { border: 1px solid var(--line); background: var(--surface); color: var(--ink2); padding: 4px 12px; border-radius: 999px; cursor: pointer; font: inherit; font-size: .88rem; }
.chip[aria-pressed="true"] { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.term { padding: 12px 0; border-bottom: 1px solid var(--line); }
.term b { font-size: 1.02rem; }
.term .en { color: var(--ink2); font-size: .85rem; margin-left: 8px; }
.term p { margin: 4px 0 0; }
.foot { border-top: 1px solid var(--line); padding: 20px 0 40px; color: var(--ink2); font-size: .88rem; }
.pill { display: inline-block; font-size: .75rem; padding: 1px 8px; border-radius: 999px; background: var(--fact-bg); color: var(--ink2); margin-left: 6px; }
.person h3 { margin-bottom: 2px; }
.person ul { margin: 4px 0 8px; padding-left: 1.2em; }
.empty { color: var(--ink2); padding: 20px; text-align: center; border: 1px dashed var(--axis); border-radius: 12px; }
.card-item { border: 1px solid var(--line); border-radius: 12px; padding: 14px; margin-bottom: 12px; background: var(--surface); }
.stack > * + * { margin-top: 10px; }

/* 個股摘要 */
.sumlist { list-style: none; margin: 0; padding: 0; }
.sumlist li { display: flex; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--line); }
.sumlist li:last-child { border-bottom: 0; }
.sumlist .ic { flex: none; width: 1.4em; height: 1.4em; margin-top: .15em; border-radius: 50%; display: grid; place-items: center; font-size: .8rem; font-weight: 700; background: var(--fact-bg); color: var(--ink2); }
.sumlist li.good .ic { background: var(--good-bg); color: var(--good); }
.sumlist li.warn .ic { background: var(--warn-bg); color: var(--warn); }
.chip.flag { cursor: default; }
.chip.flag.good { background: var(--good-bg); color: var(--good); border-color: var(--good); }
.chip.flag.warn { background: var(--warn-bg); color: var(--warn); border-color: var(--warn); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; animation: none !important; } }
@media print {
  .topbar, .foot, .no-print, nav { display: none !important; }
  body { background: #fff; color: #000; } .card, .panel, .card-item { border-color: #999; box-shadow: none; }
}