/* ======================================================================
   vocabulary/style.css — shared vanilla styles for the vocabulary site
   (index, radicals, search, tutte, flashcards, practice)
   Palette: warm paper light theme + dark theme, amber accent.
   ====================================================================== */
:root{
  --bg:#f6f3ec; --card:#ffffff; --ink:#24243a; --muted:#6b7280;
  --accent:#b45309; --accent2:#d97706; --accent-soft:#fbe9ca;
  --good:#16a34a; --bad:#dc2626; --line:#e9e2d3;
  --shadow:0 6px 24px rgba(80,60,20,.08);
  --hover:rgba(36,36,58,.045);
  --kbd:#f0ece2;
  color-scheme:light;
}
:root[data-theme="dark"]{
  --bg:#17151d; --card:#201d29; --ink:#ebe7f1; --muted:#9a90a8;
  --accent:#e0a03f; --accent2:#f4b95e; --accent-soft:#352b17;
  --good:#44bf7b; --bad:#e26050; --line:#2e2a3a;
  --shadow:0 6px 24px rgba(0,0,0,.45);
  --hover:rgba(236,232,244,.06);
  --kbd:#2a2635;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg); color:var(--ink);
  font-size:16px; line-height:1.5;
}
h1,h2,h3{margin:0}
a{color:var(--accent)}

/* ---------------- top bar ---------------- */
.topbar{
  display:flex; align-items:center; justify-content:space-between;
  gap:10px 16px; flex-wrap:wrap;
  padding:10px 18px; border-bottom:2px solid var(--line); background:var(--card);
  position:sticky; top:0; z-index:50;
}
.brand{display:flex; align-items:center; gap:10px; min-width:0}
.brand-mark{
  width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--accent),#78350f); color:#fff; font-weight:800; font-size:19px;
  font-family:"Kaiti SC","STKaiti","PingFang SC",serif; flex:none;
}
.brand-name{font-weight:800; font-size:16px; white-space:nowrap}
.brand-sub{display:block; font-size:11px; color:var(--muted); font-weight:500}
nav.tabs{display:flex; flex-wrap:wrap; gap:2px}
nav.tabs a.tab-link{
  color:var(--muted); font-size:13px; font-weight:600; text-decoration:none;
  padding:5px 11px; border-radius:8px; white-space:nowrap;
}
nav.tabs a.tab-link.on{color:var(--accent); background:var(--accent-soft)}
nav.tabs a.tab-link:hover:not(.on){color:var(--ink); background:var(--hover)}

.controls{display:flex; align-items:center; gap:8px; flex-wrap:wrap}
.seg{display:inline-flex; border:1px solid var(--line); border-radius:9px; overflow:hidden; background:var(--card)}
.seg button{
  border:0; background:transparent; padding:6px 11px; font-size:13px; cursor:pointer;
  color:var(--muted); font-weight:600;
}
.seg button.on{background:var(--accent); color:#fff}
.seg button:hover:not(.on){background:var(--hover)}
.ctl-label{font-size:10px; color:var(--muted); text-transform:uppercase; letter-spacing:.05em; font-weight:700}
select.voice{max-width:190px; font-size:12px; padding:5px 6px; border:1px solid var(--line); border-radius:8px; background:var(--card); color:var(--ink)}
select.voice:focus{outline:2px solid var(--accent2)}
.theme-btn{border:1px solid var(--line); background:var(--card); color:var(--ink); border-radius:9px; padding:6px 10px; font-size:13px; cursor:pointer}
.theme-btn:hover{border-color:var(--accent2)}

/* ---------------- settings bar (practice + flashcards) ---------------- */
.settings-bar{
  display:flex; flex-wrap:wrap; align-items:center; gap:6px 16px;
  padding:8px 18px 10px; background:var(--card); border-bottom:1px solid var(--line);
  font-size:13px;
}
.set{display:inline-flex; align-items:center; gap:6px; cursor:pointer; color:var(--ink)}
.set input{accent-color:var(--accent)}
.set input[type=number]{width:56px; font-size:13px; padding:4px 6px; border:1px solid var(--line); border-radius:7px; background:var(--card); color:var(--ink)}

/* ---------------- generic ---------------- */
.wrap{max-width:1200px; margin:0 auto; padding:18px}
.page{max-width:1200px; margin:0 auto; padding:16px 18px 40px}
.btn{
  border:1px solid var(--line); background:var(--card); color:var(--ink); border-radius:9px;
  padding:8px 14px; font-size:14px; font-weight:600; cursor:pointer; transition:.12s;
}
.btn.primary{background:var(--accent); color:#fff; border-color:transparent}
.btn.primary:hover{background:var(--accent2)}
.btn.ghost:hover{border-color:var(--accent); color:var(--accent)}
.btn.next{background:var(--good); color:#fff; border-color:transparent}
.btn.next:hover{filter:brightness(1.06)}
.btn:disabled{opacity:.45; cursor:default}
.kbd-hint{color:var(--muted); font-size:12px}
.kbd-hint kbd{
  font-family:inherit; font-size:11px; font-weight:700; background:var(--kbd);
  border:1px solid var(--line); border-bottom-width:2px; border-radius:5px; padding:1px 6px;
}
.mini-speak{
  border:1px solid transparent; background:transparent; cursor:pointer; font-size:15px;
  line-height:1; padding:3px 5px; border-radius:7px; flex:none;
}
.mini-speak:hover{border-color:var(--line); background:var(--accent-soft)}
.chip{
  display:inline-block; padding:1px 9px; border:1px solid var(--line); border-radius:999px;
  font-size:12px; font-weight:600; color:var(--muted);
}
.gen-tag{
  display:inline-block; margin-left:7px; vertical-align:middle; font-size:10px;
  color:var(--muted); border:1px solid var(--line); border-radius:999px; padding:1px 8px;
  font-weight:700; text-transform:uppercase; letter-spacing:.04em;
}
.tuttle-chip{
  color:var(--muted); font-size:11px; border:1px solid var(--line); border-radius:999px;
  padding:1px 7px; font-weight:700; flex:none;
}
.glyph-font{font-family:"Kaiti SC","STKaiti","KaiTi","Noto Serif CJK SC","Songti SC",serif}

/* ---------------- radicals ---------------- */
.radicals-wrap{display:grid; grid-template-columns:270px 1fr; gap:16px; align-items:start}
.radical-list{
  border:1px solid var(--line); border-radius:12px; padding:10px; background:var(--card);
  position:sticky; top:64px; max-height:calc(100vh - 80px); overflow-y:auto;
}
.list-tools{display:flex; flex-direction:column; gap:8px; margin-bottom:10px}
.search{width:100%; font-size:14px; padding:7px 10px; border:1px solid var(--line); border-radius:8px; background:var(--card); color:var(--ink)}
.search:focus{outline:2px solid var(--accent2); border-color:transparent}
.stroke-filter{display:flex; flex-wrap:wrap; gap:4px}
.stroke-filter button{
  border:1px solid var(--line); background:var(--card); color:var(--muted); border-radius:7px;
  font-size:12px; font-weight:600; padding:3px 8px; cursor:pointer;
}
.stroke-filter button.on{background:var(--accent); color:#fff; border-color:var(--accent)}
.radical-grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(70px,1fr)); gap:6px}
.radical-tile{
  border:1px solid var(--line); border-radius:9px; background:var(--card); cursor:pointer;
  padding:8px 4px 7px; display:flex; flex-direction:column; align-items:center; gap:1px;
}
.radical-tile:hover{border-color:var(--accent2); background:#fffdf7}
:root[data-theme="dark"] .radical-tile:hover{background:#26232f}
.radical-tile.active{border-color:var(--accent); background:var(--accent-soft); box-shadow:0 0 0 2px var(--accent)}
.rt-glyph{font-size:26px; line-height:1.1}
.rt-name{font-size:12px; font-weight:700}
.rt-meaning{font-size:10px; color:var(--muted); text-align:center; line-height:1.2}
.no-results{color:var(--muted); font-size:13px; padding:10px 4px}

.radicals-sections{display:grid; gap:16px; align-items:start}
.radicals-sections.cols-2{grid-template-columns:1fr}
.radicals-sections.cols-3{grid-template-columns:1.4fr 1fr}
.radicals-sections.cols-4{grid-template-columns:1.1fr 1fr 1fr}
.tuttle-main .sections{display:grid; gap:16px; align-items:start}
.tuttle-main .sections.cols-2{grid-template-columns:1fr}
.tuttle-main .sections.cols-3{grid-template-columns:1.1fr 1fr}
.tuttle-main .sections.cols-4{grid-template-columns:1fr 1fr 1fr}
.section-col{min-width:0}
.sc-title{font-size:15px; margin:2px 0 2px}
.sc-sub{color:var(--muted); font-size:12px; margin:0 0 10px}
.sc-hint{color:var(--muted); font-size:13px}

.detail-hero{
  display:flex; gap:18px; align-items:flex-start; flex-wrap:wrap;
  background:var(--card); border:1px solid var(--line); border-radius:14px; padding:16px 18px;
}
.big-glyph{font-size:92px; line-height:1; text-align:center; flex:none}
.detail-info{min-width:0}
.big-char{font-size:26px; font-weight:800; display:flex; align-items:baseline; gap:12px}
.pinyin-acc{color:var(--accent); font-weight:700; font-size:18px}
.meaning-acc{color:var(--accent); font-weight:600; font-size:14px}
.meaning{color:var(--ink); font-size:15px; margin:6px 0 8px}
.meta{display:flex; flex-wrap:wrap; gap:6px; align-items:center}
.actions{margin-top:10px; display:flex; gap:8px; flex-wrap:wrap}

.examples-title{font-size:15px; margin:18px 0 8px}
.sub-hint{color:var(--muted); font-size:12px; margin:0 0 10px}
.examples{display:grid; grid-template-columns:repeat(auto-fill,minmax(178px,1fr)); gap:10px}
.example-card{
  position:relative; border:1.5px solid var(--line); border-radius:12px; padding:12px 10px;
  background:var(--card); cursor:pointer; display:flex; gap:10px; align-items:center;
}
.example-card:hover{border-color:var(--accent2); background:#fffdf7}
:root[data-theme="dark"] .example-card:hover{background:#26232f}
.example-card.selected{border-color:var(--accent); background:var(--accent-soft); box-shadow:0 0 0 2px var(--accent)}
.ex-glyph{font-size:46px; line-height:1; flex:none}
.ex-text{display:flex; flex-direction:column; gap:1px; min-width:0}
.ex-char-pinyin{display:flex; align-items:baseline; gap:8px; flex-wrap:wrap}
.ex-char{font-size:19px; font-weight:800}
.ex-pinyin{color:var(--accent); font-weight:700; font-size:13px}
.ex-meaning{color:#3c3c55; font-size:12.5px; line-height:1.3}
:root[data-theme="dark"] .ex-meaning{color:#c9c4d4}
.ex-alt{color:var(--muted); font-size:11px}
.ex-tag{
  position:absolute; top:6px; right:8px; color:var(--accent); font-size:10px; font-weight:800;
  opacity:.55; letter-spacing:.02em;
}
.example-card.selected .mini-speak{position:absolute; top:6px; right:8px}
.example-card .mini-speak{position:absolute; top:6px; right:8px}

/* ---------------- words panel ---------------- */
.words-panel{display:flex; flex-direction:column; gap:8px}
.wp-toolbar{display:flex; align-items:center; justify-content:space-between; gap:10px}
.wp-count{color:var(--muted); font-size:12px}
.word-list{display:grid; gap:8px}
.word-list.rows{grid-template-columns:1fr}
.word-list.stack{grid-template-columns:1fr}
.word-item{border:1px solid var(--line); border-radius:10px; overflow:hidden; background:var(--card)}
.word-item.selected{border-color:var(--accent); box-shadow:0 0 0 2px var(--accent)}
.word-head{
  display:flex; align-items:center; gap:10px; padding:9px 11px; cursor:pointer; flex-wrap:wrap;
  background:var(--card);
}
.word-head:hover{background:var(--hover)}
.word-text{font-size:34px; font-weight:800; font-family:"Kaiti SC","STKaiti","KaiTi","Noto Serif CJK SC","Songti SC",serif}
.word-pinyin{color:var(--accent); font-weight:700; font-size:13px}
.word-meaning{color:var(--muted); font-size:13px; flex:1; min-width:110px}
.word-chevron{color:var(--muted); font-weight:700}
.word-check{color:var(--accent); font-weight:800}
.word-sentences{padding:4px 11px 12px}
.no-words,.no-sents{color:var(--muted); font-size:13px}

/* ---------------- sentences (shared) ---------------- */
.sentences{display:flex; flex-direction:column; gap:8px}
.sentence{
  position:relative; border:1px solid var(--line); border-radius:9px; padding:8px 40px 8px 11px;
  background:var(--card); display:flex; flex-direction:column; gap:2px;
}
.sen-cn{font-size:30px; font-family:"Kaiti SC","STKaiti","KaiTi","Noto Serif CJK SC","Songti SC",serif}
.sen-py{color:var(--muted); font-size:13px}
.sen-en{color:var(--muted); font-size:13px}
.sen-src{font-size:11px; color:var(--muted)}
.sentence .mini-speak{position:absolute; right:7px; top:7px}

/* ---------------- tutte ---------------- */
.tuttle-page{display:grid; grid-template-columns:230px 1fr; gap:16px; align-items:start}
.tuttle-chapters{
  border:1px solid var(--line); border-radius:12px; padding:9px; background:var(--card);
  display:flex; flex-direction:column; gap:3px;
  position:sticky; top:64px; max-height:calc(100vh - 80px); overflow-y:auto;
}
.tuttle-book{display:flex; flex-direction:column; gap:1px; padding:5px 8px 9px; margin-bottom:3px; border-bottom:1px solid var(--line)}
.tuttle-book strong{font-size:14px}
.tuttle-book span{color:var(--muted); font-size:12px}
.chapter-tab{
  display:flex; align-items:baseline; justify-content:space-between; gap:8px;
  padding:6px 10px; border-radius:8px; cursor:pointer; font-size:13px; color:var(--ink);
}
.chapter-tab:hover{background:var(--hover)}
.chapter-tab.active{background:var(--accent-soft); color:var(--accent); font-weight:800}
.chap-meta{color:var(--muted); font-size:11px; white-space:nowrap}
.chapter-tab.active .chap-meta{color:var(--accent)}

.tuttle-toolbar{display:flex; align-items:center; gap:12px; margin:0 0 12px; padding-bottom:10px; border-bottom:1px solid var(--line); flex-wrap:wrap}
.quiz-toggle{display:flex; align-items:center; gap:6px; font-size:14px; font-weight:700; cursor:pointer; user-select:none}
.quiz-toggle input{accent-color:var(--accent)}
.quiz-hint{color:var(--muted); font-size:12px}

.chap-hero{margin-bottom:8px}
.chap-title{font-size:22px; font-weight:800}
.chap-sub{margin:3px 0 0; color:var(--muted); font-size:13px}
.section-title{font-size:15px; margin:18px 0 9px}
.section-link{cursor:pointer; display:inline-block}
.section-link:hover{color:var(--accent)}
.sec-meta{color:var(--muted); font-size:12px; font-weight:600; margin-left:8px}
.all-chapter{margin-bottom:4px}
.inline-drill{margin-top:20px; border-top:2px dashed var(--line); padding-top:14px}

.char-grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(118px,1fr)); gap:10px}
.char-card{
  position:relative; display:flex; flex-direction:column; align-items:center; gap:2px;
  border:1.5px solid var(--line); border-radius:12px; padding:13px 8px 14px; cursor:pointer;
  background:var(--card); transition:all .15s; text-align:center;
}
.char-card:hover{border-color:var(--accent2)}
.char-card.selected{border-color:var(--accent); background:var(--accent-soft); box-shadow:0 0 0 2px var(--accent)}
.cc-tag{position:absolute; top:6px; left:8px; color:var(--accent); font-size:10px; font-weight:800; opacity:.45; letter-spacing:.03em}
.cc-glyph{font-size:46px; font-weight:700; line-height:1.05}
.cc-pinyin{color:var(--accent); font-weight:700; font-size:13px}
.cc-id{color:var(--muted); font-size:11px}
.cc-meaning{color:#3c3c55; font-size:12px; line-height:1.3}
:root[data-theme="dark"] .cc-meaning{color:#c9c4d4}
.cc-pos{color:var(--muted); font-size:11px; letter-spacing:.02em}
.cc-comps{display:flex; flex-wrap:wrap; gap:3px; justify-content:center; margin-top:3px}
.comp-chip{border:1px solid var(--line); border-radius:999px; padding:1px 6px; font-size:11px; color:var(--muted); background:var(--card)}
.ghost{opacity:0}
.char-card .mini-speak{position:absolute; top:5px; right:5px}
.cc-reveal-hint{position:absolute; bottom:4px; left:0; right:0; color:var(--muted); font-size:11px; letter-spacing:.03em}
.cc-drill{
  position:absolute; bottom:5px; right:7px; color:var(--accent); font-size:11px; font-weight:800;
  border:1px solid var(--line); border-radius:999px; padding:1px 8px; background:var(--card);
}
.cc-drill:hover{border-color:var(--accent)}

.word-grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(220px,1fr)); gap:8px}
.word-card{
  display:flex; flex-direction:column; gap:5px; border:1px solid var(--line); border-radius:10px;
  padding:9px 12px 10px; background:var(--card); cursor:pointer; min-width:0;
}
.word-card:hover{border-color:var(--accent2)}
.word-card.selected{border-color:var(--accent); box-shadow:0 0 0 2px var(--accent); background:var(--accent-soft)}
.wc-sents{margin-top:12px; border-top:1px dashed var(--line); padding-top:8px}
.wcs-title{font-size:14px; font-weight:800; margin:0 0 6px}
.wc-word{font-weight:800; font-size:32px; white-space:nowrap; line-height:1.2; font-family:"Kaiti SC","STKaiti","KaiTi","Noto Serif CJK SC","Songti SC",serif}
.wc-meta{display:flex; align-items:center; gap:8px; flex-wrap:wrap; min-width:0}
.wc-pinyin{color:var(--accent); font-weight:700; font-size:12px}
.wc-meaning{color:var(--muted); font-size:12px; min-width:0}
.wc-pos{color:var(--muted); font-size:11px; border:1px solid var(--line); border-radius:999px; padding:1px 7px; white-space:nowrap}

/* ---------------- flashcards ---------------- */
.flash-toolbar{display:flex; align-items:center; gap:12px; flex-wrap:wrap; margin-bottom:14px}
.counter{font-weight:800; font-size:14px; color:var(--ink)}
.flash-stage{display:flex; flex-direction:column; align-items:center; gap:14px}
.flash-card{
  width:min(460px, 86vw); height:min(320px, 40vh); display:flex; align-items:center; justify-content:center;
  border:1.5px solid var(--line); border-radius:20px; background:var(--card); box-shadow:var(--shadow);
  cursor:pointer;
}
.flash-card .fc-glyph{font-size:140px; line-height:1}
.flash-front-meta{display:flex; align-items:center; gap:10px}
.ff-pinyin{color:var(--accent); font-weight:800; font-size:22px}
.q-context{max-width:560px}
.q-words{display:flex; flex-wrap:wrap; gap:8px; justify-content:center}
.q-word{
  border:1px solid var(--line); border-radius:999px; padding:5px 13px; font-size:30px; font-weight:700;
  background:var(--card); cursor:pointer; font-family:"Kaiti SC","STKaiti","KaiTi","Noto Serif CJK SC","Songti SC",serif;
}
.q-word:hover{border-color:var(--accent2)}
.flash-back{display:flex; flex-direction:column; align-items:center; gap:8px; max-width:460px; width:100%}
.fb-char{font-size:64px; line-height:1}
.fb-pinyin{color:var(--accent); font-weight:800; font-size:21px}
.fb-meaning{font-size:17px; font-weight:600; text-align:center}
.fb-radical{color:var(--muted); font-size:14px}
.fb-words{display:flex; flex-direction:column; gap:8px; width:100%; margin-top:6px}
.fb-word{
  display:flex; align-items:center; gap:10px; border:1px solid var(--line); border-radius:10px;
  padding:8px 10px; background:var(--card); cursor:pointer;
}
.fb-word:hover{border-color:var(--accent2)}
.fw-text{font-weight:800; font-size:32px; font-family:"Kaiti SC","STKaiti","KaiTi","Noto Serif CJK SC","Songti SC",serif}
.fw-pinyin{color:var(--accent); font-weight:700; font-size:12px; flex:none}
.fw-mean{color:var(--muted); font-size:12px; flex:1; min-width:80px}
.hint{color:var(--muted); font-size:13px}
.flash-nav{display:flex; gap:10px}

/* ---------------- practice ---------------- */
.practice-toolbar{display:flex; align-items:center; gap:12px; flex-wrap:wrap; margin-bottom:14px}
.score{font-weight:800; font-size:14px}
.score .good{color:var(--good)}
.score .bad{color:var(--bad)}
.practice-stage{display:flex; flex-direction:column; align-items:center; gap:12px}
.practice-q{display:flex; align-items:center; gap:14px}
.practice-glyph{font-size:120px; line-height:1}
.practice-pinyin{color:var(--accent); font-weight:800; font-size:22px; margin:0}
.practice-instruction{color:var(--muted); font-size:15px; margin:2px 0}
.options{display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:10px; width:100%; max-width:640px}
.option{
  display:flex; align-items:center; gap:10px; border:1.5px solid var(--line); border-radius:12px;
  background:var(--card); padding:13px 15px; font-size:15px; font-weight:600; cursor:pointer; text-align:left;
}
.option:hover:not(:disabled){border-color:var(--accent2)}
.option:disabled{cursor:default}
.option.correct{background:#e7f6ec; border-color:var(--good); color:var(--good)}
:root[data-theme="dark"] .option.correct{background:#16301f}
.option.wrong{background:#fdeeee; border-color:var(--bad); color:var(--bad)}
:root[data-theme="dark"] .option.wrong{background:#361d1a}
.opt-key{
  width:22px;height:22px;border-radius:6px;background:var(--kbd);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;color:var(--muted);flex:none;
}
.result-area{display:flex; flex-direction:column; align-items:center; gap:10px; width:100%; max-width:640px}
.result-banner{border-radius:12px; padding:10px 18px; font-weight:700; font-size:15px; background:var(--card); border:1px solid var(--line)}
.result-banner.good{background:#e7f6ec; border-color:var(--good); color:var(--good)}
:root[data-theme="dark"] .result-banner.good{background:#16301f}
.result-banner .pinyin{color:var(--accent); margin-left:8px; font-weight:800}
.answer-words{display:flex; flex-direction:column; gap:8px; width:100%}
.auto-note{color:var(--muted); font-size:13px}
.done{display:flex; flex-direction:column; align-items:center; gap:10px; padding:30px 0}
.done h2{font-size:22px}
.final-score{font-size:17px; color:var(--ink)}
.mistakes-line{color:var(--bad); font-size:14px}

/* ---------------- loading ---------------- */
.loading{color:var(--muted); font-size:13px; padding:12px 2px}

/* ---------------- footer ---------------- */
.foot{margin-top:26px; padding:14px 18px; border-top:2px solid var(--line); color:var(--muted); font-size:12px; display:flex; gap:8px; flex-wrap:wrap; align-items:center}
.foot .accent{color:var(--accent); font-weight:700}
.foot-sep{opacity:.5}

/* ---------------- landing page ---------------- */
.landing{}
.hero{padding:26px 0 8px}
.hero h1{font-size:28px; font-weight:900}
.hero p{color:var(--muted); font-size:15px; max-width:760px; margin:8px 0 0}
.cards{display:grid; grid-template-columns:repeat(auto-fill,minmax(240px,1fr)); gap:14px; margin-top:22px}
.card{
  display:flex; flex-direction:column; gap:8px; text-decoration:none; color:var(--ink);
  border:1.5px solid var(--line); border-radius:14px; padding:18px; background:var(--card); transition:.15s;
}
.card:hover{border-color:var(--accent2); transform:translateY(-2px); box-shadow:var(--shadow)}
.card h3{font-size:17px}
.card .cd{color:var(--muted); font-size:13px; flex:1}
.card .go{color:var(--accent); font-weight:800; font-size:13px}
.section-title-lg{font-size:19px; font-weight:800; margin:34px 0 10px; border-bottom:2px solid var(--line); padding-bottom:6px}
.data-cards{display:grid; grid-template-columns:repeat(auto-fill,minmax(190px,1fr)); gap:12px}
.data-card{border:1px solid var(--line); border-radius:12px; background:var(--card); padding:12px 14px; text-decoration:none; color:var(--ink)}
.data-card:hover{border-color:var(--accent2)}
.data-card .dc-name{font-weight:800; font-size:14px}
.data-card .dc-desc{color:var(--muted); font-size:12px; margin-top:2px}
.data-card .dc-num{color:var(--accent); font-weight:800; font-size:14px; margin-top:6px}
.lede{background:var(--card); border:1px solid var(--line); border-radius:14px; padding:16px 18px; margin-top:22px}
.lede h3{font-size:15px; margin-bottom:6px}
.lede p{color:var(--muted); font-size:13.5px; margin:4px 0}
.lede a{color:var(--accent)}

/* ---------------- search ---------------- */
.search-wrap{display:flex;flex-direction:column;gap:10px}
.search-tools{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.search-lg{font-size:17px;padding:11px 14px;border-radius:11px}
.search-hint{color:var(--muted);font-size:13px;margin:0}
.search-results{display:flex;flex-direction:column;gap:22px;margin-top:10px}
.intro{padding:8px 2px}
.intro-note{color:var(--muted);font-size:13px;margin:0}
.intro-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.intro-chip{border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:999px;padding:6px 14px;font-size:14px;cursor:pointer;font-weight:700}
.intro-chip:hover{border-color:var(--accent2);background:var(--accent-soft)}
.sr-group{display:flex;flex-direction:column;gap:10px}
.sr-title{font-size:15px;font-weight:800;display:flex;align-items:center;gap:8px;border-bottom:2px solid var(--line);padding-bottom:6px;margin:0}
.sr-count{color:var(--muted);font-weight:600;font-size:12px;background:var(--kbd);border-radius:999px;padding:1px 9px}
.sr-more{color:var(--muted);font-size:12px;margin:0}
.sr-hint{color:var(--muted);font-size:12px;margin:8px 0 0}
.res-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:10px;align-items:start}
.res-list{display:flex;flex-direction:column;gap:8px;max-width:760px}
.res-item{display:flex;flex-direction:column}
.res-card{display:flex;align-items:center;gap:12px;border:1.5px solid var(--line);border-radius:12px;background:var(--card);padding:10px 14px;cursor:pointer;min-width:0;transition:.12s}
.res-card:hover{border-color:var(--accent2);background:#fffdf7}
:root[data-theme="dark"] .res-card:hover{background:#26232f}
.res-item.open .res-card{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent);border-radius:12px 12px 4px 4px}
.res-glyph{font-size:32px;line-height:1;flex:none}
.res-card[data-load="word"] .res-glyph{font-size:26px}
.res-card[data-load="word"] .res-title.res-py{color:var(--accent);font-weight:700;font-size:15px}
.res-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:1px}
.res-title{font-size:22px;font-weight:800;line-height:1.2}
.res-card[data-load="word"] .res-title{font-size:19px}
.res-title .res-pinyin{color:var(--accent);font-weight:700;font-size:13px;margin-left:6px}
.res-sub{color:var(--muted);font-size:12.5px}
.res-meaning{color:var(--ink);font-size:13px;line-height:1.35}
:root[data-theme="dark"] .res-meaning{color:#c9c4d4}
.res-alt{color:var(--muted);font-size:12px;font-weight:500}
.res-chev{color:var(--muted);font-weight:700;transition:transform .15s;flex:none}
.res-item.open .res-chev{transform:rotate(180deg)}
.res-detail{display:none;border:1.5px dashed var(--line);border-top:none;border-radius:0 0 12px 12px;background:rgba(0,0,0,.015);padding:12px 14px 14px}
:root[data-theme="dark"] .res-detail{background:rgba(255,255,255,.02)}
.res-item.open .res-detail{display:block}
.res-detail .res-subhead{font-size:12.5px;font-weight:800;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin:14px 0 8px}
.res-detail .res-subhead:first-child{margin-top:2px}
.def-line{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;color:var(--ink)}
.def-word{font-size:20px;font-weight:800;font-family:"Kaiti SC","STKaiti","KaiTi","Noto Serif CJK SC","Songti SC",serif}
.comp-chars{display:flex;flex-wrap:wrap;gap:6px}
.comp-char{display:inline-flex;align-items:center;gap:5px;border:1px solid var(--line);border-radius:999px;padding:2px 10px 2px 6px;font-size:20px;cursor:pointer;background:var(--card);color:var(--ink)}
.comp-char:hover{border-color:var(--accent2);background:var(--accent-soft)}
.comp-char i{font-style:normal;font-size:11px;color:var(--muted)}

/* ---------------- responsive ---------------- */
@media (max-width:900px){
  .radicals-wrap{grid-template-columns:1fr}
  .radical-list{position:static; max-height:240px}
  .tuttle-page{grid-template-columns:1fr}
  .tuttle-chapters{position:static; max-height:200px; flex-direction:row; flex-wrap:wrap; align-items:center}
  .radicals-sections.cols-3,.radicals-sections.cols-4{grid-template-columns:1fr}
  .tuttle-main .sections.cols-3,.tuttle-main .sections.cols-4{grid-template-columns:1fr}
}
@media (max-width:620px){
  .topbar{padding:8px 12px}
  .big-glyph{font-size:64px}
  .flash-card{width:92vw}
  .practice-glyph{font-size:92px}
}