/* SkillTrail 樣式
   色彩全部走下面的變數。圖表色（--series-*）是經過色盲安全檢驗的組合，
   淺色與深色模式各有一組，要換色請兩邊一起換。 */

:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --surface-2: #f1f0ec;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #6f6d68;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.1);
  --link: #1c5cab;
  --shadow: 0 6px 24px rgba(11, 11, 11, 0.12);

  /* 技術定位：主流 / 新興 / 穩定 / 利基（灰） */
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --series-3: #1baf7a;
  --series-gray: #898781;
  --meter-track: #cde2fb;

  --up: #006300;
  --down: #c03030;
  --warn: #8a5a00;

  /* 外部網站圖示的底色：favicon 多半是為白底設計的，深色模式也維持淺底 */
  --logo-bg: #ffffff;
  --logo-ink: #0b0b0b;

  /* 首頁園區地圖：水、陸地、步道、樹，以及五個區域的代表色（前四個沿用既有色票，深色模式自動跟著換） */
  --map-water: #d6e7f5;
  --map-land: #f3f1e8;
  --map-trail: #b3a17e;
  --map-tree: #93c9a6;
  --map-a1: var(--series-2);
  --map-a2: var(--series-3);
  --map-a3: var(--series-1);
  --map-a4: var(--warn);
  --map-a5: #7a5bc7;

  /* 基本功小動畫的方塊底色（淡色底配 --ink 文字；外框用對應的 --series-* 等色，深色模式換成深色底） */
  --demo-blue: #d6e6fb;
  --demo-orange: #fde0d2;
  --demo-green: #cdeee0;
  --demo-purple: #e6dff8;
  --demo-yellow: #f8e9c2;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --surface-2: #262624;
    --ink: #ffffff;
    --ink-2: #c3c2b7;
    --muted: #9a988f;
    --grid: #2c2c2a;
    --axis: #45453f;
    --border: rgba(255, 255, 255, 0.1);
    --link: #86b6ef;
    --shadow: 0 6px 24px rgba(0, 0, 0, 0.5);
    --series-1: #3987e5;
    --series-2: #d95926;
    --series-3: #199e70;
    --series-gray: #898781;
    --meter-track: #0d366b;
    --up: #0ca30c;
    --down: #e66767;
    --warn: #fab219;
    --logo-bg: #f1f0ec;
    --logo-ink: #0b0b0b;
    --map-water: #0f2637;
    --map-land: #1f1f1c;
    --map-trail: #6e6450;
    --map-tree: #2e6a49;
    --map-a5: #a68ee6;
    --demo-blue: #12355f;
    --demo-orange: #57270f;
    --demo-green: #0e4633;
    --demo-purple: #33295a;
    --demo-yellow: #4a3708;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d;
  --surface: #1a1a19;
  --surface-2: #262624;
  --ink: #ffffff;
  --ink-2: #c3c2b7;
  --muted: #9a988f;
  --grid: #2c2c2a;
  --axis: #45453f;
  --border: rgba(255, 255, 255, 0.1);
  --link: #86b6ef;
  --shadow: 0 6px 24px rgba(0, 0, 0, 0.5);
  --series-1: #3987e5;
  --series-2: #d95926;
  --series-3: #199e70;
  --series-gray: #898781;
  --meter-track: #0d366b;
  --up: #0ca30c;
  --down: #e66767;
  --warn: #fab219;
  --logo-bg: #f1f0ec;
  --logo-ink: #0b0b0b;
  --map-water: #0f2637;
  --map-land: #1f1f1c;
  --map-trail: #6e6450;
  --map-tree: #2e6a49;
  --map-a5: #a68ee6;
  --demo-blue: #12355f;
  --demo-orange: #57270f;
  --demo-green: #0e4633;
  --demo-purple: #33295a;
  --demo-yellow: #4a3708;
}

.k-core { --k: var(--series-1); }
.k-rising { --k: var(--series-2); }
.k-steady { --k: var(--series-3); }
.k-niche { --k: var(--series-gray); }

/* ───────────── 基礎 ───────────── */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-padding-top: 112px; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 15px/1.6 system-ui, -apple-system, "Segoe UI", "Microsoft JhengHei UI", "PingFang TC", "Noto Sans TC", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--link); text-underline-offset: 2px; }
h1, h2, h3 { line-height: 1.3; text-wrap: balance; }
p { text-wrap: pretty; }
code { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 0.9em; background: var(--surface-2); padding: 1px 5px; border-radius: 4px; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--series-1); outline-offset: 2px; border-radius: 4px; }
main:focus { outline: none; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }
.num { font-variant-numeric: tabular-nums; white-space: nowrap; }
.contents { display: contents; }
.skip-link { position: absolute; left: 12px; top: -48px; background: var(--ink); color: var(--page); padding: 8px 12px; border-radius: 8px; z-index: 100; }
.skip-link:focus { top: 12px; }

/* ───────────── 頁首 ───────────── */
.site-header { background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 20; }
.header-inner { display: flex; align-items: center; flex-wrap: wrap; gap: 4px 20px; min-height: 56px; }
.brand { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); text-decoration: none; padding: 8px 0; }
.brand-mark { width: 26px; height: 26px; flex: none; }
.brand-mark rect { fill: var(--series-1); }
.brand-mark path { fill: none; stroke: #fff; stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }
.brand-mark .flag, .brand-mark circle { fill: #fff; }
.brand-name { font-weight: 700; font-size: 17px; letter-spacing: -0.01em; }
.brand-sub { color: var(--muted); font-size: 13px; }

/* 選單項目多，固定放在第二行；放不下時可以左右滑動 */
.site-nav { display: flex; gap: 2px; order: 3; flex-basis: 100%; min-width: 0; overflow-x: auto; margin: 0 -20px; padding: 0 20px 8px; scrollbar-width: none; }
.site-nav::-webkit-scrollbar { display: none; }
.site-nav a { color: var(--ink-2); text-decoration: none; padding: 6px 11px; border-radius: 8px; font-size: 14px; white-space: nowrap; }
.site-nav a:hover { background: var(--surface-2); color: var(--ink); }
.site-nav a[aria-current="page"] { background: var(--surface-2); color: var(--ink); font-weight: 600; }

.header-tools { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.updated { font-size: 12.5px; color: var(--muted); white-space: nowrap; margin-right: 4px; }

@media (max-width: 980px) {
  .site-header { position: static; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 16px; }
  .site-nav { margin: 0 -16px; padding: 0 16px 8px; }
  .brand-sub, .updated { display: none; }
}

/* ───────────── 按鈕與表單 ───────────── */
.btn { font: inherit; font-size: 13px; padding: 6px 12px; border-radius: 8px; border: 1px solid var(--axis); background: var(--surface); color: var(--ink); cursor: pointer; }
.btn:hover:not(:disabled) { background: var(--surface-2); }
.btn:disabled { opacity: 0.6; cursor: default; }
.btn-ghost { border-color: transparent; background: transparent; color: var(--ink-2); }
.btn-icon { padding: 7px; display: inline-flex; }
.btn-icon svg { width: 18px; height: 18px; }
.btn-wide { width: 100%; margin-top: 12px; padding: 10px; }

.input { font: inherit; font-size: 14px; padding: 6px 10px; min-height: 36px; border: 1px solid var(--axis); border-radius: 8px; background: var(--surface); color: var(--ink); max-width: 100%; }
input[type="search"].input { flex: 1 1 200px; max-width: 320px; }
.filters { display: flex; flex-wrap: wrap; gap: 8px 10px; align-items: center; margin: 16px 0 12px; }
.inline-label, .check { display: inline-flex; gap: 6px; align-items: center; font-size: 13px; color: var(--ink-2); }

.pills { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.pills-label { font-size: 13px; color: var(--muted); margin-right: 4px; }
.pill { font: inherit; font-size: 13px; padding: 4px 12px; border-radius: 999px; border: 1px solid var(--axis); background: var(--surface); color: var(--ink-2); cursor: pointer; display: inline-flex; gap: 6px; align-items: center; text-decoration: none; }
.pill:hover { border-color: var(--ink-2); color: var(--ink); }
.pill.is-active { background: var(--ink); color: var(--page); border-color: var(--ink); }
.pill-count { font-size: 11px; opacity: 0.7; font-variant-numeric: tabular-nums; }

.status-select { font: inherit; font-size: 12.5px; padding: 3px 4px; border-radius: 6px; border: 1px solid var(--axis); background: var(--surface); color: var(--ink-2); max-width: 100%; }
.status-select.is-set { border-color: var(--series-1); color: var(--ink); font-weight: 600; }

.segment { display: inline-flex; border: 1px solid var(--axis); border-radius: 8px; overflow: hidden; }
.segment button { font: inherit; font-size: 13px; padding: 6px 14px; border: 0; background: var(--surface); color: var(--ink-2); cursor: pointer; }
.segment button + button { border-left: 1px solid var(--axis); }
.segment button:hover { background: var(--surface-2); }
.segment button.is-active { background: var(--ink); color: var(--page); }
.segment button:focus-visible { outline-offset: -2px; }

/* ───────────── 版面 ───────────── */
main > * + * { margin-top: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; align-items: start; }
@media (max-width: 900px) { .grid-2 { grid-template-columns: minmax(0, 1fr); } }

.hero { padding: 36px 0 4px; }
.hero h1 { font-size: clamp(26px, 4.2vw, 40px); letter-spacing: -0.02em; margin: 0 0 10px; }
.page-head { padding: 28px 0 0; }
.page-head h1 { font-size: clamp(24px, 3.4vw, 32px); letter-spacing: -0.01em; margin: 0 0 8px; }
.lede { font-size: 16px; color: var(--ink-2); max-width: 68ch; margin: 0; }
.lede strong { color: var(--ink); }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 20px; min-width: 0; }
.card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; margin-bottom: 14px; }
.card-head h2, .card > h2 { font-size: 17px; margin: 0; }
.card-sub { font-size: 13px; color: var(--muted); margin: 2px 0 0; }
.more { font-size: 13px; white-space: nowrap; text-decoration: none; }
.more:hover { text-decoration: underline; }
.note { font-size: 13px; color: var(--muted); margin: 8px 0 0; }
.empty { color: var(--muted); font-size: 14px; padding: 12px 0; margin: 0; }
.result-count { font-size: 13px; color: var(--muted); margin: 12px 0 4px; }
.result-count p { margin: 0; }

/* ───────────── 數字磚 ───────────── */
.tiles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 22px; }
.tiles-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 16px; }
.tile { display: flex; flex-direction: column; gap: 2px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; min-width: 0; color: var(--ink); text-decoration: none; }
.tile-link:hover { border-color: var(--series-1); }
.tile-label { font-size: 12.5px; color: var(--muted); }
.tile-value { font-size: 24px; font-weight: 650; letter-spacing: -0.01em; line-height: 1.25; overflow-wrap: anywhere; }
.tile-detail { font-size: 12.5px; color: var(--ink-2); }
.tile-up .tile-value { color: var(--up); }
.tile-down .tile-value { color: var(--down); }
@media (max-width: 760px) {
  .tiles { grid-template-columns: minmax(0, 1fr); }
  .tiles-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tile-value { font-size: 21px; }
}

/* ───────────── 標籤 ───────────── */
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--k); flex: none; display: inline-block; }
.badge { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--border); color: var(--ink-2); white-space: nowrap; }
.delta { font-size: 12.5px; font-variant-numeric: tabular-nums; white-space: nowrap; }
.delta-up { color: var(--up); }
.delta-down { color: var(--down); }
.delta-flat { color: var(--muted); }
.trend-cell { display: inline-flex; align-items: center; gap: 8px; }

.chips { display: flex; flex-wrap: wrap; gap: 5px; }
.chip { font-size: 12px; line-height: 1.5; padding: 1px 8px; border-radius: 6px; background: var(--surface-2); color: var(--ink-2); text-decoration: none; border: 1px solid transparent; white-space: nowrap; }
a.chip:hover { border-color: var(--axis); color: var(--ink); }
.chip-known { color: var(--up); font-weight: 600; }
.chip-suffix { margin-left: 5px; color: var(--muted); font-variant-numeric: tabular-nums; }
.chip-more { background: none; }

/* 職缺頁最下方：不列入統計的求職網站圖示連結 */
.job-sites { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--border); }
.job-sites h2 { font-size: 16px; margin: 0; }
.site-links { list-style: none; padding: 0; margin: 12px 0 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(104px, 1fr)); gap: 10px; }
.site-link { display: flex; flex-direction: column; align-items: center; gap: 8px; height: 100%; padding: 14px 8px 12px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); color: var(--ink); text-decoration: none; text-align: center; }
.site-link:hover { border-color: var(--series-1); }
.site-icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 12px; background: var(--logo-bg); color: var(--logo-ink); border: 1px solid var(--border); font-weight: 700; font-size: 13px; }
.site-name { font-size: 13px; line-height: 1.3; }

/* ───────────── 長條清單 ───────────── */
.bars { list-style: none; padding: 0; margin: 0; }
.bar-row { display: grid; grid-template-columns: minmax(104px, 36%) minmax(0, 1fr); gap: 12px; align-items: center; padding: 5px 0; }
.bar-label { min-width: 0; line-height: 1.35; }
.bar-label a, .bar-label > span:first-child { color: var(--ink); font-weight: 500; text-decoration: none; overflow-wrap: anywhere; }
.bar-label a:hover { text-decoration: underline; }
.bar-sub { display: block; font-size: 12px; color: var(--muted); }
.bar-track { display: flex; align-items: center; gap: 8px; min-width: 0; }
.bar-fill { height: 14px; flex: 0 0 calc(var(--w) * (100% - 56px)); min-width: 2px; background: var(--k); border-radius: 0 4px 4px 0; }
.bar-value { font-size: 13px; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.bar-row:hover .bar-fill { filter: brightness(1.12); }

.meter-cell { display: flex; align-items: center; gap: 8px; }
.meter { flex: 1 1 60px; min-width: 40px; max-width: 130px; height: 8px; }
.meter-fill { display: block; height: 100%; width: calc(var(--w) * 100%); min-width: 2px; background: var(--k); border-radius: 0 4px 4px 0; }

/* ───────────── 圖表 ───────────── */
.chart-box { min-width: 0; }
.chart { display: block; max-width: 100%; touch-action: pan-y; }
.grid-line { stroke: var(--grid); stroke-width: 1; }
.axis-line { stroke: var(--axis); stroke-width: 1; }
.tick { fill: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.tick-x { text-anchor: middle; }
.tick-y { text-anchor: end; dominant-baseline: middle; }
.axis-title { fill: var(--ink-2); font-size: 12px; }
.plot-hint { fill: var(--muted); font-size: 11.5px; }
.point { fill: var(--k); stroke: var(--surface); stroke-width: 2; }
.point-focus { fill: none; stroke: var(--k); stroke-width: 2; }
.point-label { fill: var(--ink); font-size: 12px; font-weight: 600; dominant-baseline: middle; paint-order: stroke; stroke: var(--surface); stroke-width: 3px; stroke-linejoin: round; }
.line-path { fill: none; stroke: var(--series-1); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.line-area { fill: var(--series-1); opacity: 0.1; }
.line-dot { fill: var(--series-1); stroke: var(--surface); stroke-width: 2; }
.end-label { fill: var(--ink); font-size: 12px; font-weight: 600; dominant-baseline: middle; }
.crosshair { stroke: var(--axis); stroke-width: 1; }
.spark { flex: none; }
.spark-line { fill: none; stroke: var(--series-gray); stroke-width: 1.5; stroke-linejoin: round; stroke-linecap: round; }
.spark-dot { fill: var(--series-1); }

.legend { list-style: none; display: flex; flex-wrap: wrap; gap: 4px 18px; padding: 0; margin: 0 0 10px; font-size: 13px; color: var(--ink-2); }
.legend li { display: inline-flex; align-items: center; gap: 6px; }

.tooltip { position: fixed; z-index: 50; pointer-events: none; background: var(--surface); color: var(--ink-2); border: 1px solid var(--border); box-shadow: var(--shadow); border-radius: 8px; padding: 8px 10px; font-size: 12.5px; line-height: 1.5; max-width: 300px; }
.tip-title { font-weight: 600; color: var(--ink); margin-bottom: 2px; }
.tip-row { display: flex; align-items: baseline; gap: 6px; }
.tip-row strong { color: var(--ink); font-variant-numeric: tabular-nums; }
.tip-key { width: 12px; height: 3px; border-radius: 2px; background: var(--k); align-self: center; flex: none; }

.table-twin { margin-top: 8px; font-size: 13px; }
.table-twin summary { cursor: pointer; color: var(--ink-2); width: fit-content; }

/* ───────────── 表格 ───────────── */
.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; }
.card .table-wrap { border: 0; border-radius: 0; }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th, .table td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--grid); vertical-align: middle; }
.table thead th { font-size: 12px; font-weight: 600; color: var(--muted); white-space: nowrap; }
.table tbody tr:last-child > * { border-bottom: 0; }
.table tbody tr:hover { background: var(--surface-2); }
.table th[scope="row"] { font-weight: 400; }
.table .num { text-align: right; }
.table-small th, .table-small td { padding: 5px 10px; }
.skill-link { color: var(--ink); font-weight: 600; text-decoration: none; }
.skill-link:hover { text-decoration: underline; }
.cell-sub { display: block; font-size: 12px; color: var(--muted); }
@media (max-width: 900px) { .col-trend, .col-klass { display: none; } }
@media (max-width: 620px) { .col-buzz { display: none; } .table th, .table td { padding: 9px 8px; } }

/* ───────────── 文章與職缺清單 ───────────── */
.items { list-style: none; padding: 0; margin: 0; }
.item { padding: 13px 0; border-bottom: 1px solid var(--grid); }
.item:last-child { border-bottom: 0; }
.items-compact .item { padding: 10px 0; }
.items-compact .item:first-child { padding-top: 0; }
.item-title { color: var(--ink); font-weight: 600; text-decoration: none; line-height: 1.4; overflow-wrap: anywhere; }
.item-title:hover { text-decoration: underline; }
.item-title:visited { color: var(--ink-2); }
.item-meta { display: flex; flex-wrap: wrap; gap: 2px 12px; font-size: 12.5px; color: var(--muted); margin: 3px 0 6px; }
.item-meta strong, .item-meta .src { color: var(--ink-2); }
.item-meta a { color: inherit; }
.match { font-size: 13px; color: var(--ink-2); margin: 6px 0 0; }
.common { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-top: 6px !important; color: var(--ink-2); }

/* ───────────── 總覽 ───────────── */
.legend-foot { margin: 14px 0 0; font-size: 12.5px; }
.decliners { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin: 10px 0 0; font-size: 13px; }

.cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 22px 32px; }
.cat h3 { font-size: 14px; margin: 0 0 6px; }
.cat h3 a { color: var(--ink); text-decoration: none; }
.cat h3 a:hover { text-decoration: underline; }
.cat ol { list-style: none; padding: 0; margin: 0; font-size: 14px; }
.cat li { display: flex; justify-content: space-between; gap: 8px; padding: 2px 0; }
.cat li a { color: var(--ink-2); text-decoration: none; }
.cat li a:hover { color: var(--ink); text-decoration: underline; }

/* ───────────── 技術詳情 ───────────── */
.crumbs { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.crumbs a { color: var(--ink-2); }
.skill-title { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin-bottom: 8px; }
.skill-title h1 { margin: 0; }
.skill-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-top: 14px; font-size: 13px; }
.skill-head + .tiles { margin-top: 20px; }

.resources { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; }
.resource { display: block; height: 100%; padding: 11px 14px; border: 1px solid var(--border); border-radius: 10px; text-decoration: none; color: var(--ink); }
.resource:hover { border-color: var(--series-1); }
.resource-primary { background: var(--surface-2); }
.resource-title { display: block; font-weight: 600; }
.resource-title::after { content: " ↗"; color: var(--muted); font-weight: 400; }
.resource-note { display: block; font-size: 12.5px; color: var(--muted); overflow-wrap: anywhere; }
.in-paths { margin: 16px 0 0; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font-size: 13px; color: var(--ink-2); }

/* ───────────── 學習路徑 ───────────── */
.path-intro h2 { font-size: 20px; margin: 0 0 4px; }
.path-intro p { margin: 0; color: var(--ink-2); }
.progress { height: 8px; background: var(--meter-track); border-radius: 4px; overflow: hidden; margin: 14px 0 8px; }
.progress-fill { display: block; height: 100%; width: calc(var(--w) * 100%); background: var(--series-1); border-radius: 0 4px 4px 0; transition: width 0.2s; }
.path-meta { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 4px 16px; font-size: 13px; }

.stages { list-style: none; padding: 0; margin: 24px 0 0; }
.stage { display: grid; grid-template-columns: 32px minmax(0, 1fr); gap: 0 16px; padding-bottom: 28px; position: relative; }
.stage::before { content: ""; position: absolute; left: 15.5px; top: 32px; bottom: 0; width: 1px; background: var(--axis); }
.stage:last-child::before { display: none; }
.stage-num { width: 32px; height: 32px; border-radius: 50%; background: var(--ink); color: var(--page); display: grid; place-items: center; font-weight: 700; font-size: 14px; position: relative; }
.stage-body h3 { margin: 4px 0 2px; font-size: 17px; }
.stage-note { margin: 0 0 12px; color: var(--ink-2); font-size: 14px; }
.path-skills { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 10px; }
.path-skill { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 12px; display: grid; gap: 8px; align-content: start; }
.path-skill-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap; }
.path-skill .meter-cell { font-size: 12.5px; color: var(--ink-2); }
@media (max-width: 560px) { .stage { grid-template-columns: 28px minmax(0, 1fr); gap: 0 12px; } .stage-num { width: 28px; height: 28px; } .stage::before { left: 13.5px; top: 28px; } }

/* ───────────── 我的學習 ───────────── */
.recs { list-style: none; padding: 0; margin: 0; }
.rec { display: flex; gap: 16px; align-items: flex-start; justify-content: space-between; padding: 14px 0; border-bottom: 1px solid var(--grid); }
.rec:first-child { padding-top: 0; }
.rec:last-child { border-bottom: 0; padding-bottom: 0; }
.rec-main { min-width: 0; }
.rec-head { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.rec-head .skill-link { font-size: 16px; }
.rec-desc { margin: 4px 0; color: var(--ink-2); font-size: 14px; }
.reasons { margin: 4px 0 0; padding-left: 18px; font-size: 13px; color: var(--ink-2); }
.rec .status-select { flex: none; }

.my-lists { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px 28px; }
.my-lists h3, .pick-group h3 { font-size: 13px; color: var(--ink-2); font-weight: 600; margin: 0 0 6px; }
.my-list { list-style: none; padding: 0; margin: 0; }
.my-list li { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 6px 0; border-bottom: 1px solid var(--grid); }
.my-list li:last-child { border-bottom: 0; }
.my-list a { color: var(--ink); font-weight: 500; text-decoration: none; min-width: 0; overflow-wrap: anywhere; }
@media (max-width: 760px) { .my-lists { grid-template-columns: minmax(0, 1fr); } }

.pick-groups { display: grid; gap: 16px; }
.picks { display: flex; flex-wrap: wrap; gap: 6px; }
.pick { font: inherit; font-size: 13px; padding: 3px 11px; border-radius: 999px; border: 1px solid var(--axis); background: var(--surface); color: var(--ink-2); cursor: pointer; }
.pick:hover { border-color: var(--ink-2); color: var(--ink); }
.pick.is-want, .pick.is-learning { border-style: dashed; border-color: var(--series-1); color: var(--ink); }
.pick[aria-pressed="true"] { background: var(--ink); color: var(--page); border-color: var(--ink); }
.pick[aria-pressed="true"]::before { content: "✓ "; }

/* ───────────── 資料來源 ───────────── */
.prose h3 { font-size: 15px; margin: 22px 0 8px; }
.prose p, .prose li, .prose dd { color: var(--ink-2); }
.prose li { margin-bottom: 8px; }
.prose li strong { color: var(--ink); }
.prose ul { padding-left: 20px; margin: 0; }
.defs { margin: 0; }
.defs dt { font-weight: 600; margin-top: 12px; }
.defs dt:first-child { margin-top: 0; }
.defs dd { margin: 2px 0 0; max-width: 78ch; }
.klass-list { list-style: none; padding: 0 !important; display: grid; gap: 8px; }
.klass-list li { display: flex; gap: 10px; align-items: baseline; margin: 0; }
.state { white-space: nowrap; font-size: 13px; }
.state-ok { color: var(--up); }
.state-warn { color: var(--warn); }
.state-bad { color: var(--down); }

/* ───────────── 其他 ───────────── */
.boot { text-align: center; padding: 96px 0; color: var(--ink-2); }
.spinner { width: 28px; height: 28px; border: 3px solid var(--grid); border-top-color: var(--series-1); border-radius: 50%; animation: spin 0.8s linear infinite; margin: 0 auto 16px; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spinner { animation-duration: 4s; } .progress-fill { transition: none; } }

.site-footer { margin-top: 56px; padding: 22px 0 40px; border-top: 1px solid var(--grid); font-size: 13px; color: var(--muted); }
.site-footer p { margin: 0 0 6px; max-width: 90ch; }
.site-footer a { color: var(--ink-2); }

/* ───────────── 市場切換與提醒 ───────────── */
.segment-sm button { padding: 4px 11px; font-size: 12.5px; }
.notice { margin: 20px 0 0; padding: 10px 14px; border: 1px solid var(--border); border-left: 3px solid var(--series-1); border-radius: 8px; background: var(--surface); font-size: 13.5px; color: var(--ink-2); }
.notice strong { color: var(--ink); }
.salary { color: var(--ink-2); font-variant-numeric: tabular-nums; }

/* ───────────── 學習路徑：等級、練習專案、資源 ───────────── */
.level { display: inline-block; font-size: 11.5px; font-weight: 600; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--axis); color: var(--ink-2); white-space: nowrap; }
.level-basic::before { content: "● "; color: var(--series-3); }
.level-mid::before { content: "●● "; color: var(--series-1); }
.level-adv::before { content: "●●● "; color: var(--series-2); }
.stage-title { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 10px; margin: 4px 0 2px; }
.stage-title h3 { margin: 0; font-size: 17px; }
.stage-extra { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 4px 12px; margin: 12px 0 0; padding: 10px 14px; background: var(--surface-2); border-radius: 8px; font-size: 14px; }
.stage-extra dt { font-weight: 600; color: var(--ink); white-space: nowrap; }
.stage-extra dd { margin: 0; color: var(--ink-2); }
.stage-resources { margin-top: 10px; font-size: 13.5px; }
.stage-resources ul { margin: 4px 0 0; padding-left: 20px; }
.stage-resources li { margin: 2px 0; }
.path-tabs { margin-top: 16px; }

/* ───────────── 持續精進 ───────────── */
.ladder { list-style: none; padding: 0; margin: 20px 0 0; }
.rung { display: grid; grid-template-columns: 32px minmax(0, 1fr); gap: 0 16px; padding-bottom: 20px; position: relative; }
.rung::before { content: ""; position: absolute; left: 15.5px; top: 32px; bottom: 0; width: 1px; background: var(--axis); }
.rung:last-child::before { display: none; }
.rung-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.rung-head h3 { margin: 0; font-size: 18px; }
.rung-goal { margin: 4px 0 12px; color: var(--ink); font-weight: 500; }
.rung-cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 28px; }
.rung h4 { font-size: 13px; color: var(--muted); font-weight: 600; margin: 0 0 4px; }
.rung ul { margin: 0 0 8px; padding-left: 18px; color: var(--ink-2); font-size: 14px; }
.rung-skills { margin: 6px 0 10px; }
.rung-next { margin: 0; font-size: 13.5px; color: var(--ink-2); padding-top: 10px; border-top: 1px solid var(--grid); }
.rung-next strong { color: var(--ink); }
.methods { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px 28px; }
.method h3 { font-size: 15px; margin: 0 0 4px; }
.method p { margin: 0 0 6px; color: var(--ink-2); font-size: 14px; }
.method ul { margin: 0; padding-left: 18px; font-size: 13.5px; }
@media (max-width: 640px) { .rung-cols { grid-template-columns: minmax(0, 1fr); } .rung { grid-template-columns: 28px minmax(0, 1fr); gap: 0 12px; } .rung::before { left: 13.5px; top: 28px; } }

/* ───────────── 收藏 ───────────── */
.btn-primary { background: var(--ink); color: var(--page); border-color: var(--ink); font-weight: 600; padding: 8px 18px; }
.btn-primary:hover:not(:disabled) { background: var(--ink-2); border-color: var(--ink-2); }
.badge-rec { color: var(--up); border-color: currentColor; }

/* 文章、職缺、觀念、名詞旁的「收藏」按鈕 */
.save-btn { font: inherit; font-size: 12.5px; line-height: 1.4; display: inline-flex; align-items: center; gap: 4px; min-height: 24px; padding: 1px 10px; border: 1px solid var(--axis); border-radius: 999px; background: var(--surface); color: var(--ink-2); cursor: pointer; white-space: nowrap; }
.save-btn:hover { border-color: var(--ink-2); color: var(--ink); }
.save-btn.is-saved { color: var(--warn); border-color: currentColor; font-weight: 600; }
.save-icon { font-size: 13px; line-height: 1; }
.item-meta .save-btn { margin-left: auto; }
.term dt .save-btn { margin-left: auto; align-self: center; }

/* 收藏清單頁 */
.saved-actions { display: inline-flex; flex-wrap: wrap; gap: 8px; margin-left: auto; }
.saved-status:empty { display: none; }
.saved-undo { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin: 0; padding: 8px 12px; border-radius: 8px; background: var(--surface-2); font-size: 14px; }
.saved-list { list-style: none; padding: 0; margin: 0; }
.saved-item { display: grid; grid-template-columns: 52px minmax(0, 1fr) auto; gap: 4px 10px; align-items: start; padding: 12px 0; border-bottom: 1px solid var(--grid); }
.saved-item:last-child { border-bottom: 0; }
.saved-check { display: flex; flex-direction: column; align-items: center; gap: 3px; padding-top: 2px; font-size: 11.5px; color: var(--muted); cursor: pointer; text-align: center; }
.saved-check input { width: 18px; height: 18px; margin: 0; accent-color: var(--up); cursor: pointer; }
.saved-body { min-width: 0; }
.saved-body .item-meta { margin-bottom: 0; }
.saved-item.is-done .item-title { color: var(--muted); text-decoration: line-through; text-decoration-color: var(--axis); }
.saved-item.is-done .saved-check { color: var(--up); font-weight: 600; }
.saved-remove { padding: 4px 8px; }
.saved-remove:hover { color: var(--down); }
.saved-where { margin: 8px 0 0; padding-left: 20px; color: var(--ink-2); font-size: 14px; }
.saved-where li + li { margin-top: 4px; }
.saved-empty h2 { font-size: 17px; margin: 0 0 6px; }
.saved-empty p { margin: 0; color: var(--ink-2); }
.saved-empty .note { margin-top: 10px; color: var(--muted); }
.saved-form { display: grid; gap: 10px; }
.saved-form .btn-primary { justify-self: start; }
.saved-form .note { margin: 0; }
.field { display: grid; gap: 4px; font-size: 13px; color: var(--ink-2); }
.field .input { width: 100%; }
.saved-skills p { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin: 0; }
.saved-skills p + p { margin-top: 10px; }
.copy-area { width: 100%; margin-top: 8px; font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 12.5px; }
@media (max-width: 560px) { .saved-actions { margin-left: 0; } .saved-item { grid-template-columns: 44px minmax(0, 1fr) auto; } }

/* ───────────── 名詞解釋 ───────────── */
.term-groups { display: grid; gap: 20px; margin-top: 12px; }
.terms { margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 0 28px; }
.term { padding: 12px 0; border-bottom: 1px solid var(--grid); scroll-margin-top: 80px; }
.term dt { display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px 10px; }
.term-name { font-weight: 650; font-size: 15.5px; color: var(--ink); text-decoration: none; }
.term-name:hover { text-decoration: underline; }
.term-aka { font-size: 12.5px; color: var(--muted); }
.term dd { margin: 4px 0 0; }
.term-def { margin: 0; color: var(--ink-2); font-size: 14px; }
.term-example { margin: 6px 0 0; padding-left: 10px; border-left: 2px solid var(--axis); font-size: 13.5px; color: var(--ink-2); overflow-wrap: anywhere; }
.term-links { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; margin: 8px 0 0; font-size: 13px; }
.term.is-target { background: var(--surface-2); border-radius: 8px; padding: 12px; border-bottom-color: transparent; box-shadow: inset 3px 0 0 var(--series-1); }
@media (max-width: 560px) { .terms { grid-template-columns: minmax(0, 1fr); } }

.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.tiles-flush { margin-top: 0; }

/* ───────────── 首頁：園區導覽地圖 ───────────── */
.area-gate { --area: var(--map-a1); }
.area-basics { --area: var(--map-a2); }
.area-career { --area: var(--map-a3); }
.area-intel { --area: var(--map-a4); }
.area-home { --area: var(--map-a5); }

.park-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; gap: 10px 20px; }
.park-head h2 { font-size: 19px; margin: 0; }
.park-tour-pick { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.park-tour-desc { margin: 12px 0 0; color: var(--ink-2); font-size: 14px; }
.park-steps { list-style: none; display: flex; flex-wrap: wrap; align-items: center; gap: 6px 0; padding: 0; margin: 10px 0 0; }
.park-steps li { display: inline-flex; align-items: center; }
.park-steps li + li::before { content: "→"; color: var(--muted); margin: 0 6px; }
.park-steps a { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--ink); text-decoration: none; padding: 2px 10px 2px 3px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); }
.park-steps a:hover { border-color: var(--series-1); }
.park-step-num { width: 20px; height: 20px; border-radius: 50%; background: var(--ink); color: var(--page); display: grid; place-items: center; font-size: 11.5px; font-weight: 700; }

.park-body { display: grid; gap: 16px; margin-top: 14px; align-items: start; }
.park-map { min-width: 0; }
.park-svg { display: block; width: 100%; height: auto; touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
.park-water { fill: var(--map-water); }
.park-land { fill: var(--map-land); }
.park-lake { fill: var(--map-water); }
.park-tree circle { fill: var(--map-tree); }
.park-tree rect { fill: var(--map-trail); }
.park-compass circle { fill: var(--surface); stroke: var(--axis); }
.park-compass path { fill: var(--ink-2); }
.park-compass text { fill: var(--ink-2); font-size: 12px; font-weight: 700; }
.park-area-bg { fill: color-mix(in srgb, var(--area) 9%, var(--map-land)); stroke: color-mix(in srgb, var(--area) 50%, transparent); stroke-width: 1.5; stroke-dasharray: 6 5; }
.park-area-tag { fill: var(--surface); stroke: color-mix(in srgb, var(--area) 55%, transparent); }
.park-area-dot { fill: var(--area); }
.park-area-name { fill: var(--ink); font-size: 14px; font-weight: 650; }
.park-trail { fill: none; stroke: var(--map-trail); stroke-width: 5; stroke-linecap: round; stroke-dasharray: 1 11; }
.park-route { fill: none; stroke: var(--series-1); stroke-width: 4; stroke-linecap: round; stroke-dasharray: 10 8; animation: park-march 1.4s linear infinite; }
@keyframes park-march { to { stroke-dashoffset: -18; } }
.park-entrance rect { fill: var(--ink); }
.park-entrance text { fill: var(--page); font-size: 13px; font-weight: 700; }

.spot { cursor: pointer; outline: none; }
.spot-hit { fill: transparent; }
.spot-body { transform-box: fill-box; transform-origin: center; transition: transform 0.15s; }
.spot-bg { fill: var(--surface); stroke: var(--area); stroke-width: 3; }
.spot-icon { font-size: 26px; }
.spot-label { fill: var(--ink); font-size: 16px; font-weight: 650; paint-order: stroke; stroke: var(--map-land); stroke-width: 5px; stroke-linejoin: round; }
.park-svg.is-tall .spot-label { font-size: 15px; }
.spot-ring-track { fill: none; stroke: var(--grid); stroke-width: 5; }
.spot-ring { fill: none; stroke: var(--up); stroke-width: 5; stroke-linecap: round; }
.spot-step circle { fill: var(--ink); stroke: var(--surface); stroke-width: 2; }
.spot-step text { fill: var(--page); font-size: 12.5px; font-weight: 700; }
.spot.is-off { opacity: 0.45; }
.spot:hover .spot-body, .spot.is-selected .spot-body { transform: scale(1.12); }
.spot.is-selected .spot-bg { stroke-width: 4.5; fill: color-mix(in srgb, var(--area) 16%, var(--surface)); }
.spot:focus-visible .spot-bg { stroke: var(--ink); stroke-width: 4.5; }
.spot.is-off:hover, .spot.is-off.is-selected, .spot.is-off:focus-visible { opacity: 1; }

.park-panel { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; min-width: 0; z-index: 2; }
.park-panel-head { display: flex; gap: 12px; align-items: center; }
.park-panel-icon { flex: none; width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center; font-size: 25px; background: color-mix(in srgb, var(--area) 14%, var(--surface)); border: 2px solid var(--area); }
.park-panel-area { display: block; font-size: 12.5px; color: var(--muted); }
.park-panel h3 { margin: 0; font-size: 18px; }
.park-panel-page { font-size: 13px; color: var(--ink-2); }
.park-panel-note { margin: 10px 0 0; font-size: 13.5px; color: var(--ink-2); padding: 6px 10px; background: var(--surface-2); border-radius: 6px; }
.park-panel-note strong { color: var(--ink); }
.park-panel-desc { margin: 10px 0 0; font-size: 14px; color: var(--ink-2); }
.park-facts { margin: 8px 0 0; padding-left: 18px; font-size: 13px; color: var(--ink-2); }
.park-facts li { margin: 2px 0; }
.park-progress { margin-top: 10px; font-size: 12.5px; }
.park-progress .progress { margin: 0 0 4px; }
.park-panel-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.park-panel-actions .btn { text-decoration: none; display: inline-flex; align-items: center; }
.park-legend { margin-top: 12px; }

/* 景點介紹：寬螢幕放在地圖右邊；較窄時放在地圖下方、捲動地圖時黏在畫面底部，所以要盡量矮，才不會蓋住地圖 */
@media (min-width: 1100px) {
  .park-body { grid-template-columns: minmax(0, 1fr) 290px; }
  .park-panel { position: sticky; top: 120px; }
}
@media (max-width: 1099px) {
  .park-panel { position: sticky; bottom: 10px; box-shadow: var(--shadow); }
  .park-panel-desc { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
}
@media (min-width: 900px) and (max-width: 1099px) {
  .park-panel { display: grid; grid-template-columns: 220px minmax(0, 1fr) auto; column-gap: 18px; align-items: center; }
  .park-panel > * { grid-column: 2; margin-top: 0 !important; }
  .park-panel > * + * { margin-top: 4px !important; }
  .park-panel > .park-panel-head { grid-column: 1; grid-row: 1 / span 5; }
  .park-panel > .park-panel-actions { grid-column: 3; grid-row: 1 / span 5; flex-direction: column; align-items: stretch; }
  .park-panel-note { padding: 3px 8px; }
  .park-facts { display: flex; flex-wrap: wrap; gap: 0 14px; padding-left: 0; list-style: none; }
  .park-facts li { margin: 0; }
  .park-progress { display: none; }
}
@media (max-width: 899px) {
  .park-body { grid-template-columns: minmax(0, 460px); justify-content: center; }
  /* 窄螢幕的介紹黏在畫面底部，只留名稱、這一站的重點與按鈕 */
  .park-facts, .park-progress, .park-panel-page, .park-panel-note + .park-panel-desc { display: none; }
  .park-panel { padding: 10px 12px; }
  .park-panel-icon { width: 40px; height: 40px; font-size: 21px; }
  .park-panel h3 { font-size: 16px; }
  .park-panel-note, .park-panel-desc, .park-panel-actions { margin-top: 8px; }
  .park-panel-actions { flex-wrap: nowrap; }
}
@media (max-width: 420px) { .park-next-name { display: none; } }
@media (prefers-reduced-motion: reduce) { .park-route { animation: none; } .spot-body { transition: none; } }

/* ───────────── 程式語言 ───────────── */
.diff { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-2); white-space: nowrap; }
.diff-pips { display: inline-flex; gap: 3px; }
.diff-pips i { width: 14px; height: 6px; border-radius: 3px; background: var(--grid); }
.diff-pips i.on { background: var(--ink-2); }
.diff-1 .diff-pips i.on, .diff-2 .diff-pips i.on { background: var(--series-3); }
.diff-3 .diff-pips i.on { background: var(--series-1); }
.diff-4 .diff-pips i.on, .diff-5 .diff-pips i.on { background: var(--series-2); }
.tile-diff .diff { font-size: 16px; color: var(--ink); font-weight: 600; }
.tile-diff .diff-pips i { width: 18px; height: 8px; }

.lang-starters { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 12px 24px; }
.lang-starters li { display: grid; gap: 4px; align-content: start; }
.lang-starter-goal { font-weight: 600; }
.lang-starter-note { font-size: 13px; color: var(--muted); }

.lang-grid { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; }
.lang-card { position: relative; display: grid; gap: 8px; align-content: start; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; }
.lang-card:hover { border-color: var(--series-1); }
.lang-card:focus-within { outline: 2px solid var(--series-1); outline-offset: 1px; }
.lang-card-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.lang-card h3 { margin: 0; font-size: 17px; }
.lang-card h3 a { color: var(--ink); text-decoration: none; }
.lang-card h3 a::after { content: ""; position: absolute; inset: 0; border-radius: 12px; }
.lang-card h3 a:focus-visible { outline: none; }
.lang-since { font-size: 12.5px; }
.lang-tagline { margin: 0; font-size: 14px; color: var(--ink-2); }
.chip-on { background: var(--ink); color: var(--page); }
.lang-card-foot { display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap; margin: 2px 0 0; font-size: 13px; color: var(--ink-2); }
.lang-table { margin-top: 16px; }
.lang-table .table-wrap { margin-top: 8px; }

.lang-why { margin: 0 0 12px; color: var(--ink-2); }
.diff-scale { list-style: none; padding: 0; margin: 0; display: grid; gap: 4px; font-size: 13px; }
.diff-scale li { display: grid; grid-template-columns: 22px 6.5em minmax(0, 1fr); gap: 8px; align-items: baseline; padding: 4px 8px; border-radius: 6px; color: var(--ink-2); }
.diff-scale li.is-current { background: var(--surface-2); color: var(--ink); font-weight: 600; box-shadow: inset 3px 0 0 var(--series-1); }
.diff-scale-num { font-variant-numeric: tabular-nums; color: var(--muted); }
.diff-scale-langs { color: var(--muted); font-weight: 400; }
.lang-fit { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 32px; }
.lang-fit h3 { font-size: 14px; margin: 0 0 6px; color: var(--ink-2); }
.fit-list, .pro-list, .con-list { margin: 0 0 12px; padding-left: 20px; color: var(--ink-2); font-size: 14px; }
.fit-list li, .pro-list li, .con-list li { margin: 3px 0; }
.pro-list li::marker { content: "＋ "; color: var(--up); }
.con-list li::marker { content: "－ "; color: var(--down); }
.lang-notfor { margin: 0 0 14px; color: var(--ink-2); font-size: 14px; }
.pros-cons { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 20px; }
.lang-uses { margin: 0; }
.lang-others { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--border); }
.lang-others h2 { font-size: 16px; margin: 0 0 10px; }
.in-paths .btn { text-decoration: none; display: inline-flex; align-items: center; }
@media (max-width: 760px) { .lang-fit, .pros-cons { grid-template-columns: minmax(0, 1fr); } }

/* 程式碼範例（語言介紹、基本功） */
.code-figure { margin: 0; min-width: 0; }
.code-figure figcaption { font-size: 12.5px; color: var(--muted); margin-bottom: 4px; }
.code { margin: 0; padding: 12px 14px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; overflow-x: auto; font: 13px/1.55 ui-monospace, "Cascadia Code", Consolas, monospace; font-variant-ligatures: none; tab-size: 4; color: var(--ink); }
.code code { background: none; padding: 0; font-size: inherit; }
.code-compare { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 12px; }
.code-compare-pick { margin-bottom: 0; }
@media (max-width: 900px) { .code-compare { grid-template-columns: minmax(0, 1fr); } }

/* ───────────── 工程師基本功 ───────────── */
@media (max-width: 640px) {
  .cs-tabs { flex-wrap: nowrap; overflow-x: auto; overscroll-behavior-x: contain; scroll-snap-type: x proximity; padding-bottom: 6px; }
  .cs-tabs .pill { flex: none; white-space: nowrap; scroll-snap-align: center; }
}
.cs-intro h2 { font-size: 20px; margin: 0 0 4px; }
.cs-intro > p { margin: 0; color: var(--ink-2); }
.cs-resources { margin: 0; padding-left: 18px; }
.cs-resources li { margin: 2px 0; }
.concepts { display: grid; gap: 20px; }
.concept-group { display: grid; gap: 8px; }
.concept-group-title { font-size: 17px; margin: 4px 0 0; }
.concept { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; scroll-margin-top: 120px; }
.concept[open] { border-color: var(--axis); }
.concept > summary { list-style: none; cursor: pointer; padding: 12px 16px 12px 40px; position: relative; display: grid; gap: 4px; border-radius: 10px; }
.concept > summary::-webkit-details-marker { display: none; }
.concept > summary::before { content: "▸"; position: absolute; left: 16px; top: 12px; color: var(--muted); transition: transform 0.15s; }
.concept[open] > summary::before { transform: rotate(90deg); }
.concept > summary:hover { background: var(--surface-2); }
.concept-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; }
.concept-name { font-weight: 650; font-size: 16px; color: var(--ink); }
.concept-def { color: var(--ink-2); font-size: 14px; }
.concept-body { padding: 0 16px 14px 40px; display: grid; gap: 12px; }
.concept-facts { margin: 0; display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 6px 14px; padding: 10px 14px; background: var(--surface-2); border-radius: 8px; font-size: 14px; }
.concept-facts dt { font-weight: 600; color: var(--ink); white-space: nowrap; }
.concept-facts dd { margin: 0; color: var(--ink-2); }
.concept-cases { display: grid; gap: 6px; }
.concept-cases-title { margin: 0; font-size: 13px; font-weight: 600; color: var(--muted); }
.concept-cases ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.concept-cases li { display: grid; gap: 2px; padding: 8px 12px; border-left: 3px solid var(--series-1); border-radius: 0 6px 6px 0; background: var(--surface-2); font-size: 14px; }
.concept-cases strong { color: var(--ink); font-weight: 650; }
.concept-cases span { color: var(--ink-2); }
.concept-links { display: grid; gap: 6px; font-size: 13px; }
.concept-links p { margin: 0; display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.concept-permalink { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; margin: 0; font-size: 12.5px; }
.concept.is-target { box-shadow: inset 3px 0 0 var(--series-1); border-color: var(--series-1); }
@media (max-width: 560px) {
  .concept > summary { padding-left: 34px; }
  .concept > summary::before { left: 12px; }
  .concept-body { padding: 0 12px 12px; }
  .concept-facts { grid-template-columns: minmax(0, 1fr); }
  .concept-facts dd { margin-bottom: 4px; }
}
@media (prefers-reduced-motion: reduce) { .concept > summary::before { transition: none; } }

/* 基本功的小動畫（demos.js）：--demo-ms 由播放器設定，跳步時是 0 */
.badge-demo { color: var(--link); border-color: currentColor; font-size: 11.5px; padding: 0 7px; }
.demo { margin: 0; min-width: 0; display: grid; gap: 10px; padding: 12px 14px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); }
.demo-title { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13.5px; font-weight: 600; color: var(--ink); }
.demo-stage { min-width: 0; }
.demo-svg { display: block; width: 100%; max-width: 560px; height: auto; margin: 0 auto; }
.demo-svg text { fill: var(--ink); font-size: 12px; }
.demo-svg .demo-note { fill: var(--muted); font-size: 10.5px; }
.demo-svg .demo-math { fill: var(--ink-2); font-size: 11.5px; }
.demo-svg .demo-pointer { fill: var(--ink-2); font-size: 11px; transition: transform var(--demo-ms, 0ms) ease-in-out, opacity var(--demo-ms, 0ms); }
.demo-svg .demo-plus { fill: var(--up); font-weight: 700; }
.demo-svg .demo-minus { fill: var(--down); font-weight: 700; }
.demo-tile { transition: transform var(--demo-ms, 0ms) ease-in-out, opacity var(--demo-ms, 0ms); }
.demo-tile rect, .demo-tile circle { fill: var(--surface-2); stroke: var(--axis); stroke-width: 1.5; transition: fill var(--demo-ms, 0ms), stroke var(--demo-ms, 0ms); }
.demo-tile.is-active rect, .demo-tile.is-active circle { fill: var(--demo-blue); stroke: var(--series-1); stroke-width: 2; }
.demo-tile.is-move rect, .demo-tile.is-move circle { fill: var(--demo-orange); stroke: var(--series-2); stroke-width: 2; }
.demo-tile.is-done rect, .demo-tile.is-done circle { fill: var(--demo-green); stroke: var(--series-3); stroke-width: 2; }
.demo-tile.is-extra rect, .demo-tile.is-extra circle { fill: var(--demo-purple); stroke: var(--map-a5); stroke-width: 2; }
.demo-tile.is-dim, .demo-edge.is-dim { opacity: 0.3; }
.demo-tile.is-gone { opacity: 0; }
.demo-bucket rect { fill: none; stroke-dasharray: 4 3; }
.demo-bucket.is-active rect { fill: var(--demo-blue); stroke-dasharray: none; }
.demo-slot { fill: none; stroke: var(--axis); stroke-dasharray: 4 3; }
.demo-edge { stroke: var(--axis); stroke-width: 2; transition: opacity var(--demo-ms, 0ms); }
.demo-ground, .demo-peg { fill: var(--series-gray); }
.demo-svg .demo-peg-name { font-weight: 600; fill: var(--ink-2); }
.demo-window rect { fill: none; stroke: var(--series-1); stroke-width: 2.5; }
.demo-best rect { fill: none; stroke: var(--series-3); stroke-width: 2; stroke-dasharray: 5 4; }
.demo-window, .demo-best { transition: transform var(--demo-ms, 0ms) ease-in-out, opacity var(--demo-ms, 0ms); }
.demo-disk rect { stroke-width: 1.5; }
.disk-1 rect { fill: var(--demo-blue); stroke: var(--series-1); }
.disk-2 rect { fill: var(--demo-orange); stroke: var(--series-2); }
.disk-3 rect { fill: var(--demo-green); stroke: var(--series-3); }
.disk-4 rect { fill: var(--demo-purple); stroke: var(--map-a5); }
.disk-5 rect { fill: var(--demo-yellow); stroke: var(--warn); }
.demo-split { display: grid; grid-template-columns: minmax(0, 1fr) 210px; gap: 12px; align-items: start; }
.demo-side { padding: 8px 10px; background: var(--surface-2); border-radius: 8px; font-size: 13px; }
.demo-side-title { margin: 0 0 4px; font-size: 12px; color: var(--muted); }
.demo-calls { margin: 0; padding: 0; list-style: none; display: grid; gap: 2px; font-variant-numeric: tabular-nums; }
.demo-calls .is-current { font-weight: 600; }
.demo-say { margin: 0; min-height: 3.2em; font-size: 14px; color: var(--ink); }
.demo-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.demo-controls .btn[aria-disabled="true"] { opacity: 0.5; cursor: default; }
.demo-play { min-width: 5.5em; }
.demo-progress { flex: 1 1 160px; display: flex; align-items: center; gap: 8px; min-width: 0; }
.demo-slider { flex: 1; min-width: 80px; accent-color: var(--series-1); }
.demo-count { font-size: 12.5px; color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
@media (max-width: 640px) {
  .demo { padding: 10px; }
  .demo-split { grid-template-columns: minmax(0, 1fr); }
  /* 從頭、上一步、播放、下一步擠在同一行 */
  .demo-controls { gap: 6px; }
  .demo-controls .btn { padding: 6px 9px; }
  /* 畫面會縮小到八成左右，字放大一點才看得清楚 */
  .demo-svg text { font-size: 13.5px; }
  .demo-svg .demo-note, .demo-svg .demo-pointer { font-size: 12px; }
  .demo-svg .demo-math { font-size: 12.5px; }
}
.demo-svg .demo-disk text { font-size: 11px; }
@media (prefers-reduced-motion: reduce) {
  .demo-tile, .demo-tile rect, .demo-tile circle, .demo-svg .demo-pointer, .demo-edge, .demo-window, .demo-best { transition: none; }
}

/* 名詞解釋：AI 時代標籤、學習必要性／實用程度／職缺提及率 */
.badge-ai { color: var(--link); border-color: currentColor; font-size: 11.5px; padding: 0 7px; }
.term-ratings { display: grid; gap: 8px; margin: 10px 0 0; padding: 10px 12px; background: var(--surface-2); border-radius: 8px; font-size: 13px; }
.term.is-target .term-ratings { background: var(--surface); }
.rating { display: grid; grid-template-columns: 5.6em minmax(0, 1fr); column-gap: 10px; align-items: baseline; }
.rating-label { color: var(--muted); font-size: 12.5px; }
.rating-value { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; color: var(--ink); }
.rating-text { grid-column: 2; color: var(--ink-2); }
.rating .delta { font-weight: 600; }
.dots { display: inline-flex; gap: 3px; }
.dots i { width: 7px; height: 7px; border-radius: 50%; border: 1px solid var(--axis); background: transparent; }
.dots i.on { background: var(--series-1); border-color: var(--series-1); }