/* 字源 HanziOrigin — 宣纸 · 墨 · 朱砂 主题
   纯静态、无外部依赖、支持 RTL(ar) 与 6 语排版。 */
:root{
  --paper:#fbf6ec;
  --paper-2:#f4ecdc;
  --ink:#1c2430;
  --ink-soft:#4a5462;
  --muted:#8a8577;
  --line:#e4d8c1;
  --cinnabar:#a83a2b;
  --cinnabar-soft:#c25a44;
  --jade:#2f6b4f;
  --gold:#b8912f;
  --blue:#2c4a7c;
  --shadow:0 6px 24px rgba(60,45,25,.09);
  --radius:14px;
  --serif:"Songti SC","STSong","SimSun","Noto Serif CJK SC",serif;
  --sans:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;
  --kai:"Kaiti SC","STKaiti","KaiTi","SimKai",serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);
  -webkit-font-smoothing:antialiased;line-height:1.65}
/* 宣纸纹理：极淡的斜纹 */
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.5;
  background-image:repeating-linear-gradient(45deg,rgba(160,140,100,.035) 0 2px,transparent 2px 7px);}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.3;letter-spacing:.02em}
.muted{color:var(--muted)}
.small{font-size:.86rem}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:28px;
  padding:12px clamp(18px,5vw,56px);
  background:rgba(251,246,236,.9);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:38px;height:38px;border-radius:9px;background:var(--cinnabar);color:#fff;
  font-family:var(--kai);font-size:26px;display:grid;place-items:center;
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.25)}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text b{font-family:var(--serif);font-size:19px;letter-spacing:.18em}
.brand-text small{color:var(--muted);font-size:10px;letter-spacing:.16em;text-transform:uppercase}
.main-nav{display:flex;gap:26px;margin-inline-start:auto;font-size:14px;color:var(--ink-soft)}
.main-nav a:hover{color:var(--cinnabar)}
.lang-switch{position:relative;flex-shrink:0}
.lang-btn{background:var(--paper-2);border:1px solid var(--line);color:var(--ink);
  padding:8px 13px;border-radius:10px;cursor:pointer;font-family:inherit;font-size:13px;display:flex;align-items:center;gap:7px}
.lang-btn:hover{border-color:var(--cinnabar-soft)}
.lang-globe{color:var(--cinnabar);font-size:15px}
.caret{font-size:10px;color:var(--muted)}
.lang-menu{position:absolute;inset-inline-end:0;top:calc(100% + 8px);min-width:160px;
  background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);
  padding:6px;display:none;flex-direction:column;z-index:60}
.lang-menu.open{display:flex}
.lang-opt{padding:9px 12px;border-radius:8px;font-size:13px}
.lang-opt:hover{background:var(--paper-2);color:var(--cinnabar)}
.lang-opt.active{color:var(--cinnabar);font-weight:600}
[dir="rtl"] .brand-text b{letter-spacing:0}
[dir="rtl"] .caret{transform:scaleX(-1)}

/* ---------- Layout ---------- */
main{position:relative;z-index:1}
.sec-head{text-align:center;margin:0 auto 34px;max-width:720px;padding:0 20px}
.sec-head h2{font-size:clamp(26px,4vw,38px);margin:0 0 12px;position:relative;display:inline-block}
.sec-head h2::after{content:"";display:block;width:44px;height:3px;margin:12px auto 0;
  background:var(--cinnabar);border-radius:2px}
.sec-head p{color:var(--ink-soft);margin:0;font-size:15px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  background:radial-gradient(1200px 400px at 75% 20%,#f7efdc,transparent),var(--paper)}
.hero-inner{max-width:1180px;margin:0 auto;padding:clamp(60px,9vw,110px) 24px clamp(50px,7vw,86px);
  position:relative;z-index:2}
.hero-kicker{color:var(--cinnabar);letter-spacing:.34em;font-size:12px;text-transform:uppercase;margin:0 0 22px;font-weight:600}
.hero-title{font-size:clamp(38px,7vw,78px);margin:0 0 20px;letter-spacing:.06em;
  font-family:var(--kai);line-height:1.15}
.hero-title .accent{color:var(--cinnabar)}
.hero-sub{font-size:clamp(15px,2vw,19px);color:var(--ink-soft);max-width:560px;margin:0 0 34px}
.hero-cta{display:inline-flex;align-items:center;gap:12px;background:var(--cinnabar);color:#fff;
  padding:14px 26px;border-radius:30px;font-size:15px;box-shadow:0 8px 20px rgba(168,58,43,.22);
  transition:transform .2s,box-shadow .2s}
.hero-cta:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(168,58,43,.3)}
.hero-cta span{font-size:18px}
.hero-stats{display:flex;gap:clamp(28px,6vw,64px);margin-top:56px}
.hero-stats div{display:flex;flex-direction:column}
.hero-stats b{font-family:var(--serif);font-size:34px;color:var(--ink);line-height:1}
.hero-stats span{color:var(--muted);font-size:12px;margin-top:8px;letter-spacing:.08em}
.hero-glyph{position:absolute;inset-inline-end:6%;top:50%;transform:translateY(-50%);
  width:min(38vw,420px);height:min(38vw,420px);display:grid;place-items:center;opacity:.92;pointer-events:none}
.hg-ring{position:absolute;inset:0;border-radius:50%;border:1px solid var(--line);
  box-shadow:inset 0 0 60px rgba(184,145,47,.08)}
.hg-ring2{inset:12%;border-style:dashed;border-color:rgba(168,58,43,.25)}
.hg-char{font-family:var(--kai);font-size:min(24vw,260px);color:var(--ink);
  text-shadow:0 0 1px rgba(0,0,0,.1);position:relative}
.hg-char::after{content:"字源";position:absolute;inset-inline-end:-.15em;bottom:.1em;
  font-family:var(--sans);font-size:11px;color:#fff;background:var(--cinnabar);
  padding:5px 7px;border-radius:4px;letter-spacing:.1em;writing-mode:vertical-rl}
[dir="rtl"] .hero-glyph{inset-inline-end:auto;inset-inline-start:6%}

/* ---------- Browse / cards ---------- */
.browse,.how,.langs,.about{max-width:1180px;margin:0 auto;padding:clamp(56px,8vw,96px) 24px}
.search-bar{display:flex;max-width:520px;margin:0 auto 38px;gap:10px}
.search-bar input{flex:1;padding:13px 18px;border:1px solid var(--line);border-radius:30px;
  background:#fff;font-family:inherit;font-size:15px;color:var(--ink);outline:none}
.search-bar input:focus{border-color:var(--cinnabar-soft);box-shadow:0 0 0 3px rgba(168,58,43,.1)}
.search-bar button{padding:13px 22px;border:0;border-radius:30px;background:var(--ink);color:#fff;
  cursor:pointer;font-family:inherit;font-size:14px}
.char-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.char-card{position:relative;display:flex;align-items:center;gap:14px;padding:16px 14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:transform .18s,box-shadow .18s,border-color .18s}
.char-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--cinnabar-soft)}
.card-glyph{font-family:var(--kai);font-size:52px;line-height:1;color:var(--ink);flex-shrink:0;width:60px;text-align:center}
.char-card:hover .card-glyph{color:var(--cinnabar)}
.card-info{display:flex;flex-direction:column;min-width:0;gap:2px;flex:1}
.card-info b{font-size:15px;font-weight:600}
.card-gloss{font-size:13px;color:var(--ink-soft);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card-theme{font-size:11px;color:var(--muted);margin-top:4px}
.card-evo{width:72px;height:72px;border-radius:8px;opacity:.5;flex-shrink:0;mix-blend-mode:multiply}
.no-results{text-align:center;color:var(--muted);padding:40px}

/* ---------- How ---------- */
.how{background:var(--paper-2);max-width:none;border-block:1px solid var(--line)}
.how .sec-head,.how-grid{max-width:1180px;margin-inline:auto}
.how .how-grid{padding:0 24px;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.how-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px}
.how-num{font-family:var(--serif);font-size:44px;color:var(--cinnabar);opacity:.28;display:block;line-height:1;margin-bottom:12px}
.how-item h3{font-size:19px;margin:0 0 10px}
.how-item p{color:var(--ink-soft);font-size:14px;margin:0}

/* ---------- Languages ---------- */
.lang-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px}
.lang-card{display:flex;flex-direction:column;gap:6px;padding:24px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);transition:.18s}
.lang-card:hover{border-color:var(--cinnabar);transform:translateY(-2px)}
.lang-card b{font-family:var(--serif);font-size:20px}
.lang-card span{font-size:11px;color:var(--muted);letter-spacing:.2em}
.about{border-top:1px solid var(--line);text-align:center}
.about h2{font-size:26px;margin:0 0 14px}
.about p{max-width:760px;margin:0 auto;color:var(--ink-soft)}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--paper-2)}
.footer-inner{max-width:1180px;margin:0 auto;padding:38px 24px;text-align:center}
.footer-brand{font-family:var(--serif);font-size:18px;display:flex;gap:10px;align-items:center;justify-content:center}
.footer-brand .brand-mark{width:28px;height:28px;font-size:19px}
.footer-inner p{font-size:13px;margin:12px 0 0}
.footer-langs{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:16px}
.footer-langs a{font-size:13px;color:var(--ink-soft)}
.footer-langs a:hover{color:var(--cinnabar)}

/* ---------- Character page ---------- */
.char-main{max-width:1080px;margin:0 auto;padding:clamp(30px,5vw,60px) 24px 80px}
.char-top{display:flex;flex-direction:column;gap:46px}
.char-hero{display:flex;align-items:center;gap:clamp(24px,5vw,52px);
  padding-bottom:30px;border-bottom:1px solid var(--line)}
.char-big{font-family:var(--kai);font-size:clamp(110px,18vw,190px);line-height:1;
  color:var(--ink);text-shadow:2px 3px 0 rgba(168,58,43,.08);flex-shrink:0}
.char-side{display:flex;flex-direction:column;gap:10px}
.char-pinyin{font-size:26px;color:var(--cinnabar);font-weight:600;letter-spacing:.04em}
.char-gloss{font-family:var(--serif);font-size:clamp(22px,3.2vw,32px)}
.char-trad{color:var(--muted);font-size:13px;margin-top:6px}

/* Evolution */
.evolution{background:var(--paper-2);border:1px solid var(--line);border-radius:20px;padding:clamp(22px,4vw,40px)}
.ev-stage{display:grid;grid-template-columns:minmax(240px,340px) 1fr;gap:clamp(20px,4vw,44px);align-items:center}
.gif-wrap{position:relative;display:flex;justify-content:center}
#evo-gif{width:min(100%,320px);height:auto;border-radius:14px;background:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow)}
.evo-toggle{position:absolute;bottom:12px;inset-inline-end:calc(50% - 150px);
  background:rgba(28,36,48,.82);color:#fff;border:0;border-radius:20px;padding:7px 14px;
  font-family:inherit;font-size:12px;cursor:pointer;backdrop-filter:blur(4px)}
.evo-toggle:hover{background:var(--cinnabar)}
.stage-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
.stage-chip{display:flex;flex-direction:column;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:12px 8px;transition:.18s;cursor:pointer;text-align:center}
.stage-chip:hover,.stage-chip.active{border-color:var(--cinnabar);box-shadow:var(--shadow)}
.stage-chip img{width:72px;height:72px;object-fit:contain;border-radius:6px;background:var(--paper);flex-shrink:0}
.stage-chip:first-child{background:#fdf6e9;border-color:#e0c79a}
.stage-chip:first-child.active{border-color:#8a5a2b}
.stage-meta{display:flex;flex-direction:column;line-height:1.35}
.stage-meta b{font-family:var(--serif);font-size:14px}
.stage-meta span{font-size:10px;color:var(--muted)}
.timeline{margin-top:26px}
.timeline input{width:100%;accent-color:var(--cinnabar);cursor:pointer}
.timeline-ticks{display:flex;justify-content:space-between;font-size:12px;color:var(--ink-soft);margin-top:8px}
.timeline-ticks span{display:flex;flex-direction:column;text-align:center;flex:1}
.timeline-ticks span:first-child{text-align:start}
.timeline-ticks span:last-child{text-align:end}
.timeline-ticks i{font-style:normal;font-size:10px;color:var(--muted)}
.evo-note{margin:22px 0 0;padding-top:20px;border-top:1px dashed var(--line);
  color:var(--ink-soft);font-size:15px;line-height:1.9}

/* Cards grid on char page */
.char-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 26px 24px;
  position:relative;overflow:hidden}
.card::before{content:"";position:absolute;inset-block-start:0;inset-inline-start:0;width:100%;height:3px;
  background:linear-gradient(90deg,var(--cinnabar),transparent)}
.card h3{font-size:19px;margin:0 0 14px}
.card h3.sub{font-size:15px;margin:22px 0 8px;color:var(--muted)}
.card p{margin:0;color:var(--ink-soft);font-size:14.5px;line-height:1.85}
.card-shuowen blockquote{font-family:var(--kai);font-size:22px;line-height:1.9;color:var(--ink);
  margin:0 0 12px;padding-inline-start:16px;border-inline-start:3px solid var(--cinnabar)}
.card-shuowen cite{font-style:normal;color:var(--muted);font-size:12px}
/* 实物简画说明卡：五阶段的第一阶段，用赭石色区别于四体墨色 */
.card-pictograph{background:#fdf7ea;border-color:#e6d3ae}
.card-pictograph::before{background:linear-gradient(90deg,#8a5a2b,transparent)}
.card-pictograph h3{color:#7a4a1f}
.pict-note-body{display:flex;align-items:center;gap:20px}
.pict-note-body img{width:110px;height:110px;flex-shrink:0;object-fit:contain;
  background:#fff;border:1px solid #e6d3ae;border-radius:10px}
.pict-note-body p{font-size:14.5px;line-height:1.85}
[dir="rtl"] .card-pictograph::before{background:linear-gradient(270deg,#8a5a2b,transparent)}
.card-info .info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(96px,1fr));gap:14px}
.info-cell{display:flex;flex-direction:column;gap:5px;padding:10px 0;border-bottom:1px dashed var(--line)}
.info-cell span{font-size:11px;color:var(--muted)}
.info-cell b{font-size:16px;font-family:var(--serif)}
.gloss-row{display:grid;grid-template-columns:96px minmax(110px,1fr) 2fr;gap:12px;align-items:baseline;
  padding:11px 0;border-bottom:1px dashed var(--line);font-size:13.5px}
.gloss-row:last-child{border-bottom:0}
.gloss-tag{color:var(--muted);font-size:11px;letter-spacing:.06em}
.gloss-word{font-family:var(--serif);font-size:16px;color:var(--cinnabar)}
[lang="ar"] .gloss-word,[lang="ru"] .gloss-word{font-family:var(--sans)}
.gloss-def{color:var(--ink-soft)}
.word-list{list-style:none;margin:0;padding:0}
.word-list li{display:flex;align-items:baseline;gap:12px;padding:9px 0;border-bottom:1px dashed var(--line)}
.word-list li:last-child{border-bottom:0}
.w-zh{font-family:var(--kai);font-size:20px;min-width:64px}
.w-py{color:var(--cinnabar);font-size:12px;min-width:70px}
.w-gloss{color:var(--ink-soft);font-size:13px}
.rel-list{display:flex;gap:12px;flex-wrap:wrap}
.rel-char{font-family:var(--kai);font-size:34px;width:64px;height:64px;display:grid;place-items:center;
  background:var(--paper-2);border:1px solid var(--line);border-radius:10px}
.rel-char:hover{background:var(--cinnabar);color:#fff;border-color:var(--cinnabar)}

.char-nav{display:flex;justify-content:space-between;align-items:center;gap:16px;
  margin-top:10px;padding-top:26px;border-top:1px solid var(--line)}
.pn{display:flex;flex-direction:column;gap:2px;padding:12px 20px;border:1px solid var(--line);
  border-radius:12px;background:#fff;font-size:12px;color:var(--muted);min-width:110px}
.pn b{font-family:var(--kai);font-size:28px;color:var(--ink);line-height:1}
.pn:hover{border-color:var(--cinnabar)}
.pn.home{font-size:13px;flex-direction:row;align-items:center;color:var(--ink-soft)}
.pn.next{text-align:end}

/* ---------- RTL ---------- */
[dir="rtl"] .char-side,[dir="rtl"] .card-info,[dir="rtl"] .stage-meta{text-align:right}
[dir="rtl"] .gloss-row{direction:rtl}
[dir="rtl"] .evo-toggle{inset-inline-end:auto;inset-inline-start:calc(50% - 150px)}
[dir="rtl"] .pn.next{text-align:left}
[dir="rtl"] .pn.prev{text-align:right}
[dir="rtl"] .card-shuowen blockquote{border-inline-start:0;border-inline-end:3px solid var(--cinnabar);padding-inline-start:0;padding-inline-end:16px}
[dir="rtl"] .card::before{background:linear-gradient(270deg,var(--cinnabar),transparent)}

/* ---------- Responsive ---------- */
@media(max-width:820px){
  .main-nav{display:none}
  .hero-glyph{opacity:.18;inset-inline-end:-8%}
  .ev-stage{grid-template-columns:1fr}
  .stage-list{grid-template-columns:repeat(5,1fr);gap:6px}
  .stage-chip{gap:5px;padding:10px 4px}
  .stage-chip img{width:56px;height:56px}
  .stage-meta b{font-size:12px}
  .stage-meta span{font-size:9px}
  .char-grid{grid-template-columns:1fr}
  .gloss-row{grid-template-columns:1fr;gap:3px}
}
@media(max-width:520px){
  .hero-stats{gap:22px}
  .hero-stats b{font-size:26px}
  .stage-list{grid-template-columns:repeat(3,1fr)}
  .char-hero{flex-direction:column;text-align:center;gap:12px}
  .char-side{align-items:center}
  .evo-toggle{inset-inline-end:12px}
  .gloss-row{grid-template-columns:1fr}
  .card{padding:20px}
}

/* ---------- 语音：Web Speech API ---------- */
/* .speak-btn 显式 display 会盖掉 UA 的 [hidden]，这里显式补回 */
[hidden]{display:none!important}
.voice-bar{margin:26px 0 6px;padding:20px 24px;border:1px solid var(--line);
  border-radius:var(--radius);background:linear-gradient(135deg,#fff 0%,var(--paper-2) 100%);
  box-shadow:var(--shadow);position:relative;overflow:hidden}
.voice-bar::after{content:"";position:absolute;inset-block-start:-30px;inset-inline-end:-30px;
  width:120px;height:120px;border:1px solid var(--line);border-radius:50%;opacity:.6}
.voice-bar-head h2{display:flex;align-items:center;gap:9px;font-size:19px;margin:0 0 6px}
.vb-mark{color:var(--cinnabar);font-size:14px;animation:vb-pulse 2.4s ease-in-out infinite}
@keyframes vb-pulse{0%,100%{opacity:.55;transform:scale(1)}50%{opacity:1;transform:scale(1.18)}}
.voice-bar-head p{margin:0 0 16px;max-width:100%;text-wrap:pretty}
.voice-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;position:relative;z-index:1}
.speak-btn{display:inline-flex;align-items:center;gap:8px;padding:9px 15px;border:1px solid var(--line);
  border-radius:999px;background:#fff;color:var(--ink);font:inherit;font-size:13px;cursor:pointer;
  transition:background .18s,border-color .18s,color .18s,transform .18s}
.speak-btn:hover{border-color:var(--cinnabar);color:var(--cinnabar);transform:translateY(-1px)}
.speak-btn:focus-visible{outline:2px solid var(--cinnabar);outline-offset:2px}
.speak-btn.speak-all{background:var(--cinnabar);border-color:var(--cinnabar);color:#fff}
.speak-btn.speak-all:hover{background:#8e2f23;color:#fff}
.speak-btn.speak-stop{background:var(--ink);border-color:var(--ink);color:#fff}
.speak-btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}
.spk-ico{display:inline-block;width:14px;height:14px;flex:0 0 14px;background:currentColor;
  clip-path:polygon(0 36%,26% 36%,54% 8%,54% 92%,26% 64%,0 64%)}
.speak-btn.speaking,.speak-mini.speaking{background:var(--cinnabar);border-color:var(--cinnabar);
  color:#fff;animation:spk-glow 1s ease-in-out infinite}
@keyframes spk-glow{0%,100%{box-shadow:0 0 0 0 rgba(168,58,43,.35)}
  50%{box-shadow:0 0 0 6px rgba(168,58,43,0)}}
.speak-mini{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;
  padding:0;border:1px solid var(--line);border-radius:50%;background:#fff;color:var(--muted);
  cursor:pointer;vertical-align:middle;margin-inline-start:5px;transition:all .18s}
.speak-mini .spk-ico{width:10px;height:10px;flex-basis:10px}
.speak-mini:hover{border-color:var(--cinnabar);color:var(--cinnabar)}
.speak-mini:focus-visible{outline:2px solid var(--cinnabar);outline-offset:2px}
.voice-fallback{margin:14px 0 0;padding:10px 14px;border-radius:8px;background:#fdf0e8;
  color:#8e3a26;font-size:13px}
.voice-unavailable .voice-actions{opacity:.6}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.card-head h3{margin:0}
.card-head .speak-btn{padding:6px 12px;font-size:12px}
.evo-listen{margin-top:18px}
.word-list .speak-mini{flex:0 0 24px;align-self:center;margin-inline-start:0}
[dir="rtl"] .voice-bar::after{inset-inline-end:auto;inset-inline-start:-30px}
[dir="rtl"] .spk-ico{transform:scaleX(-1)}
@media(max-width:820px){
  .voice-actions{gap:8px}
  .speak-btn{font-size:12px;padding:8px 12px}
  .card-head{flex-wrap:wrap}
}
@media(max-width:520px){
  .voice-bar{padding:16px}
  .voice-actions{flex-direction:column;align-items:stretch}
  .speak-btn{justify-content:center}
}