/* 備課 ⑦ 華語備課資料（lesson-extras.js）＋ ③ 筆順練習單（lesson-strokes.js） */
#lx-title { flex: 0 1 9em; }
.lx-sec { margin-top: 14px; }
.lx-sec > summary { cursor: pointer; color: var(--c-cbd5e1); font-size: .9rem; font-weight: 600; padding: 8px 10px;
                   background: var(--c-1a2030); border-radius: 8px; }
.lx-sec > summary:hover { background: var(--c-222a3d); }

/* 文章標音：一個詞一塊，字上簡體、字右直排注音、詞下拼音 */
.lx-article { background: var(--c-f8fafc); color: var(--c-111827); border-radius: 10px; padding: 18px 20px; line-height: 1;
              font-family: "BiauKai", "DFKai-SB", "標楷體", "Kaiti TC", serif; }
.lx-w { display: inline-flex; flex-direction: column; align-items: flex-start; margin: 0 6px 18px 0; vertical-align: top; }
.lx-w.lx-p { margin-right: 2px; }
.lx-cs { display: inline-flex; }
.lx-c { display: inline-grid; grid-template-columns: auto auto; grid-template-rows: 14px auto; align-items: end; }
.lx-simp { grid-column: 1; grid-row: 1; font-size: 12px; color: var(--c-6b7280); text-align: center; height: 14px; }
.lx-han { grid-column: 1; grid-row: 2; font-size: 30px; line-height: 1.1; }
.lx-zy { grid-column: 2; grid-row: 2; font-size: 10px; line-height: 1; align-self: center; min-width: 10px; margin-left: 1px; }
/* 直排注音：本體直排，ˊˇˋ 貼在最後一個符號右側 */
.zy { display: inline-flex; flex-direction: row; align-items: flex-end; }
.zy-b { writing-mode: vertical-rl; text-orientation: upright; letter-spacing: -.05em; }
.zy-t { font-size: 1em; line-height: 1; margin-left: .1em; }
.lx-py { font-family: "Times New Roman", serif; font-size: 15px; margin-top: 4px; white-space: nowrap; min-height: 15px; }
.lx-no-py .lx-py { display: none; }
.lx-no-zy .lx-zy { display: none; }
.lx-no-simp .lx-simp { visibility: hidden; }

.lx-c.lx-sd .lx-han { text-decoration: underline dashed var(--c-dc2626); text-underline-offset: 4px; }
.lx-tag { display: inline-block; margin-left: 6px; padding: 0 6px; border-radius: 6px; font-size: .72rem; font-weight: normal;
          background: var(--c-3b2f0b); color: var(--c-fcd34d); border: 1px solid var(--c-a16207); vertical-align: middle; }
.lx-tag-used { background: var(--c-0f2e1d); color: var(--c-4ade80); border-color: var(--c-166534); }
.lx-poly-c { font-size: 1.4rem; }
.lx-supp-hd { margin: 10px 0 4px; color: var(--c-fcd34d); font-size: .85rem; }
.lx-gram { border: 1px solid var(--c-2d3548); border-radius: 10px; padding: 10px 14px; margin: 8px 0; line-height: 1.7; }
.lx-gram-hd { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.lx-gram-py { color: var(--c-7dd3fc); font-style: italic; }
.lx-gram-en { color: var(--c-5eead4); }
.lx-gram-st { color: var(--c-fcd34d); font-size: .9rem; }
.lx-gram-ex { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 8px; margin-top: 6px; color: var(--c-cbd5e1); }
.lx-gram-ex small { color: var(--c-94a3b8); }
.lx-gram-ex .lx-en { color: var(--c-5eead4); }
.lx-gram-in { color: var(--c-94a3b8); font-size: .85rem; margin-top: 4px; }
.lx-gram details { color: var(--c-94a3b8); font-size: .85rem; }

/* 筆順練習單（白底，列印用） */
.lx-sheet-wrap { position: fixed; inset: 0; z-index: 700; background: #fff; color: #111; overflow-y: auto; padding: 16px 24px 60px; }
.lx-sheet-wrap[hidden] { display: none; }
.lx-sheet-bar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 16px; }
.lx-sheet-bar button:not(.btn-go) { background: var(--c-e5e7eb); color: #111; }
.sk-row { display: grid; grid-template-columns: 130px 90px 1fr; gap: 12px; align-items: center; padding: 14px 0;
          border-bottom: 1px solid var(--c-e5e7eb); break-inside: avoid; }
.sk-head { text-align: center; }
.sk-big { display: inline-grid; grid-template-columns: 1fr 26px; border: 2px solid var(--c-bbbbbb); width: 110px; height: 92px; }
.sk-han { font-family: "BiauKai", "DFKai-SB", "標楷體", "Kaiti TC", serif; font-size: 64px; line-height: 92px; border-right: 2px solid var(--c-bbbbbb); }
.sk-zy { font-size: 16px; display: flex; align-items: center; justify-content: center; }
.sk-py { font-family: "Times New Roman", serif; font-size: 20px; margin-top: 4px; }
.sk-labels { display: grid; grid-template-rows: 1fr 1fr; gap: 20px; text-align: center; font-size: 15px; }
.sk-labels small { font-size: 11px; color: var(--c-555555); }
.sk-steps { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 10px; }
.sk-step { width: 52px; height: 52px; }
.sk-grid-row { display: grid; grid-template-columns: repeat(10, 1fr); border: 2px solid var(--c-cccccc); max-width: 760px; }
.sk-cell { aspect-ratio: 1; border-right: 2px solid var(--c-cccccc); }
.sk-cell:last-child { border-right: none; }
.sk-svg { width: 100%; height: 100%; display: block; }
.sk-grid { stroke: var(--c-bbbbbb); stroke-width: 10; stroke-dasharray: 40 40; }
.sk-done { fill: var(--c-a3a3a3); }
.sk-now { fill: var(--c-2f9e5b); }
.sk-trace { fill: var(--c-d6eadc); }
.sk-dash { fill: none; stroke: var(--c-333333); stroke-width: 14; stroke-dasharray: 50 40; }
@media print {
  body.lx-printing > *:not(#lx-sheet) { display: none !important; }
  body.lx-printing { padding: 0; background: #fff; }
  .lx-sheet-wrap { position: static; overflow: visible; padding: 0; }
  .lx-sheet-bar { display: none; }
}