:root{
  --paper:#f6f2ea;
  --paper2:#fffdf8;
  --ink:#2b2620;
  --ink2:#5c5347;
  --ink3:#8b8175;
  --line:#e2d9c9;
  --line2:#efe7d8;
  --red:#9c3a2e;
  --red-soft:#f6e7e2;
  --teal:#2f6f6a;
  --teal-soft:#e3efed;
  --blue:#3f6da3;
  --blue-soft:#e6eef7;
  --purple:#6f5495;
  --purple-soft:#ede7f5;
  --orange:#c2762a;
  --orange-soft:#f8ecdc;
  --green:#4a7c4a;
  --green-soft:#e7f0e4;
  --brown:#8a5c3c;
  --brown-soft:#f2e7dd;
  --shadow:0 1px 2px rgba(43,38,32,.05),0 8px 24px rgba(43,38,32,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{overflow-x:hidden;
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Serif SC",serif;
  font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:.02em}
p{margin:0 0 .8em}
a{color:var(--teal);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.small-note,.note{color:var(--ink3);font-size:13px}
.small{font-size:13px;color:var(--ink3)}

/* header */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(246,242,234,.94);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:12px;padding-bottom:12px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  width:38px;height:38px;border-radius:8px;background:var(--red);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;flex:none;
}
.brand h1{font-size:19px;line-height:1.2}
.brand-sub{margin:0;font-size:12px;color:var(--ink3)}
.nav{display:flex;gap:4px;flex-wrap:wrap}
.nav a{
  padding:6px 12px;border-radius:20px;font-size:14px;color:var(--ink2);
}
.nav a:hover{background:var(--line2);text-decoration:none}
.nav a.active{background:var(--ink);color:#fff}

/* pages */
.page{display:none;padding:36px 0 60px}
.page.active{display:block}

/* hero */
.hero{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:start;margin-bottom:36px}
.hero-text h2{font-size:26px;margin-bottom:12px;line-height:1.4}
.hero-text p{color:var(--ink2)}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.btn{
  border:1px solid var(--line);background:var(--paper2);color:var(--ink);
  padding:8px 16px;border-radius:6px;font-size:14px;cursor:pointer;font-family:inherit;
}
.btn:hover{border-color:var(--ink3)}
.btn.primary{background:var(--red);border-color:var(--red);color:#fff}
.btn.primary:hover{background:#87322a}
.btn.ghost{background:transparent}
.btn.small{padding:5px 12px;font-size:13px}
.hero-cards{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mini-stat{background:var(--paper2);border:1px solid var(--line);border-radius:10px;padding:12px 14px}
.mini-stat b{display:block;font-size:19px;color:var(--red);line-height:1.3}
.mini-stat span{font-size:12px;color:var(--ink3)}

/* sections */
.section{margin-top:34px}
.section-head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin:0 0 14px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.section-head h3{font-size:19px}
.lead{background:var(--paper2);border-left:3px solid var(--red);padding:14px 18px;border-radius:0 8px 8px 0;color:var(--ink2);margin-bottom:20px}

/* schematic */
.map-legend{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:12px;font-size:13px}
.map-legend i{display:inline-block;width:11px;height:11px;border-radius:3px;margin-right:5px;vertical-align:-1px}
.schematic{position:relative;height:480px;background:
  linear-gradient(var(--line2) 1px,transparent 1px) 0 0/100% 40px,
  linear-gradient(90deg,var(--line2) 1px,transparent 1px) 0 0/40px 100%,
  var(--paper2);
  border:1px solid var(--line);border-radius:12px;overflow:hidden}
.zone{
  position:absolute;transform:translate(-50%,-50%);width:132px;padding:9px 11px;
  border-radius:10px;border:1px solid var(--line);background:var(--paper2);
  box-shadow:var(--shadow);cursor:pointer;transition:transform .15s,box-shadow .15s;
}
.zone:hover{transform:translate(-50%,-50%) translateY(-3px);box-shadow:0 10px 26px rgba(43,38,32,.12)}
.zone .zname{font-weight:600;font-size:14px;display:flex;align-items:center;gap:6px}
.zone .zname i{width:9px;height:9px;border-radius:50%;flex:none}
.zone .zsub{font-size:11.5px;color:var(--ink3);line-height:1.5;margin-top:3px}

/* entry cards */
.entry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.entry-card{
  text-align:left;background:var(--paper2);border:1px solid var(--line);border-radius:12px;
  padding:18px;cursor:pointer;font-family:inherit;color:inherit;transition:transform .15s,box-shadow .15s;
}
.entry-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.entry-num{font-size:13px;color:var(--red);letter-spacing:.2em}
.entry-card h4{font-size:17px;margin:6px 0 6px}
.entry-card p{font-size:13px;color:var(--ink2);margin:0}

/* filters */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:12px}
.filters input,.filters select{
  padding:8px 12px;border:1px solid var(--line);border-radius:6px;background:var(--paper2);
  font-family:inherit;font-size:14px;color:var(--ink);
}
.filters input{flex:1;min-width:220px}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.chip{
  padding:5px 12px;border-radius:20px;border:1px solid var(--line);background:var(--paper2);
  font-size:13px;cursor:pointer;color:var(--ink2);font-family:inherit;
}
.chip:hover{border-color:var(--ink3)}
.chip.active{background:var(--ink);color:#fff;border-color:var(--ink)}

/* cards */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.card-grid.wide{grid-template-columns:repeat(2,1fr)}
.d-card,.a-card,.m-card{
  background:var(--paper2);border:1px solid var(--line);border-radius:12px;padding:16px 18px;
  cursor:pointer;transition:transform .15s,box-shadow .15s;display:flex;flex-direction:column;
}
.d-card:hover,.a-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.m-card{cursor:default}
.d-card h4,.a-card h4{font-size:17px;margin-bottom:4px}
.d-card .meta,.a-card .meta{font-size:12.5px;color:var(--ink3);margin-bottom:8px}
.d-card .desc,.a-card .desc{font-size:13.5px;color:var(--ink2);flex:1}
.tagrow{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.tag{font-size:11.5px;padding:2px 8px;border-radius:12px;background:var(--line2);color:var(--ink2)}
.tag.red{background:var(--red-soft);color:var(--red)}
.tag.teal{background:var(--teal-soft);color:var(--teal)}
.tag.blue{background:var(--blue-soft);color:var(--blue)}
.tag.purple{background:var(--purple-soft);color:var(--purple)}
.tag.orange{background:var(--orange-soft);color:var(--orange)}
.tag.green{background:var(--green-soft);color:var(--green)}
.tag.brown{background:var(--brown-soft);color:var(--brown)}
.empty{color:var(--ink3);padding:30px;text-align:center}

/* chapters */
.chapter-list{display:flex;flex-direction:column;gap:12px;margin-bottom:32px}
.chapter{background:var(--paper2);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.chapter summary{
  padding:14px 18px;cursor:pointer;list-style:none;display:flex;align-items:center;gap:12px;
}
.chapter summary::-webkit-details-marker{display:none}
.chapter summary h4{font-size:16px;flex:1}
.chapter summary .ctime{font-size:12.5px;color:var(--ink3)}
.chapter[open] summary{border-bottom:1px solid var(--line2);background:#fbf7f0}
.chapter .cbody{padding:16px 18px}
.chapter .cbody p{color:var(--ink2)}
.evidences{margin:12px 0 0;padding-left:18px;color:var(--ink2);font-size:13.5px}
.evidences li{margin-bottom:5px}
.caution{margin-top:12px;padding:10px 14px;background:var(--orange-soft);border-radius:8px;font-size:13px;color:#7d4d15}

/* tales */
.tale-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-bottom:32px}
.tale{background:var(--paper2);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.tale h4{font-size:15px;color:var(--red);margin-bottom:8px}
.tale p{font-size:13.5px;color:var(--ink2)}
.tale .note{font-size:12.5px;color:var(--ink3);border-top:1px dashed var(--line);padding-top:8px;margin-top:10px}

/* tables */
.table-scroll{overflow-x:auto;margin-bottom:30px}
table{width:100%;border-collapse:collapse;background:var(--paper2);font-size:13.5px}
th,td{border:1px solid var(--line2);padding:8px 12px;text-align:left;vertical-align:top}
th{background:#f3ede2;font-weight:600;white-space:nowrap}
td.dialect-word{color:var(--red);font-weight:600;white-space:nowrap}
tbody tr:nth-child(even){background:#fdfaf4}

/* timeline */
.timeline{position:relative;padding-left:26px;margin-bottom:32px}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tl-item{position:relative;margin-bottom:16px}
.tl-item::before{content:"";position:absolute;left:-23px;top:8px;width:10px;height:10px;border-radius:50%;background:var(--red);border:2px solid var(--paper)}
.tl-year{font-size:12.5px;color:var(--red);font-weight:600}
.tl-title{font-size:15.5px;font-weight:600;margin:2px 0}
.tl-meta{font-size:12.5px;color:var(--ink3);margin-bottom:5px}
.tl-desc{font-size:13.5px;color:var(--ink2)}

/* stats */
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:24px}
.stat{background:var(--paper2);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.stat b{display:block;font-size:24px;color:var(--teal);line-height:1.3}
.stat span{display:block;font-size:14px;font-weight:600;margin-top:2px}
.stat em{font-style:normal;font-size:12.5px;color:var(--ink3)}

.usage-box{background:var(--paper2);border:1px solid var(--line);border-radius:12px;padding:20px;margin-bottom:30px}
.usage-box h4{font-size:16px;margin-bottom:8px}
.usage-box p{font-size:13.5px;color:var(--ink2)}
.usage-chart{display:flex;flex-direction:column;gap:8px;margin:16px 0}
.bar-row{display:flex;align-items:center;gap:10px;font-size:13px}
.bar-row .bl{width:110px;flex:none;color:var(--ink2)}
.bar-row .bt{flex:1;height:16px;background:var(--line2);border-radius:8px;overflow:hidden}
.bar-row .bf{height:100%;background:linear-gradient(90deg,var(--red),#c76a55);border-radius:8px}
.bar-row .bv{width:52px;text-align:right;color:var(--red);font-weight:600;flex:none}

.bullets{margin:0;padding-left:20px;color:var(--ink2);font-size:13.5px}
.bullets li{margin-bottom:7px}

/* views */
.view-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-bottom:30px}
.view{background:var(--paper2);border:1px solid var(--line);border-left:3px solid var(--teal);border-radius:0 10px 10px 0;padding:14px 18px}
.view .who{font-size:12.5px;color:var(--teal)}
.view .txt{font-size:14px;color:var(--ink);margin:6px 0}

/* about */
.about-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.about-card{background:var(--paper2);border:1px solid var(--line);border-radius:12px;padding:18px 20px}
.about-card h4{font-size:16px;margin-bottom:10px}
.about-card p{font-size:13.5px;color:var(--ink2)}
.ref-list{display:flex;flex-direction:column;gap:6px;max-height:420px;overflow-y:auto}
.ref-list a{font-size:13px}

/* modal */
.modal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:24px}
.modal[hidden]{display:none}
.modal-mask{position:absolute;inset:0;background:rgba(43,38,32,.42)}
.modal-panel{
  position:relative;background:var(--paper2);border-radius:14px;max-width:820px;width:100%;
  max-height:86vh;overflow-y:auto;padding:26px 28px;box-shadow:0 20px 60px rgba(0,0,0,.25);
}
.modal-close{position:absolute;top:12px;right:14px;background:none;border:none;font-size:26px;color:var(--ink3);cursor:pointer;line-height:1}
.modal-close:hover{color:var(--ink)}
.modal h3{font-size:21px;margin-bottom:4px}
.modal .msub{font-size:13px;color:var(--ink3);margin-bottom:16px}
.mblock{margin-bottom:18px}
.mblock h5{font-size:13px;letter-spacing:.1em;color:var(--red);margin:0 0 6px;text-transform:uppercase}
.mblock p,.mblock li{font-size:14px;color:var(--ink2)}
.phon{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.phon div{background:var(--paper);border:1px solid var(--line2);border-radius:8px;padding:10px}
.phon span{display:block;font-size:11.5px;color:var(--ink3)}
.phon b{font-size:15px;color:var(--ink)}
.wordchip{display:inline-flex;gap:6px;background:var(--paper);border:1px solid var(--line2);border-radius:8px;padding:5px 11px;margin:0 8px 8px 0;font-size:13.5px}
.wordchip b{color:var(--red)}
.wordchip span{color:var(--ink3)}
.mrefs{display:flex;flex-direction:column;gap:4px}

/* footer */
.site-footer{border-top:1px solid var(--line);background:#efe9dd;padding:24px 0;color:var(--ink3);font-size:13px}
.site-footer p{margin:0 0 4px}


/* ===== 来源著录（闭合平台，无外链） ===== */
.srcref{display:inline-block;font-size:12px;color:var(--ink3);background:var(--paper);border:1px dashed var(--line2);border-radius:6px;padding:3px 8px;line-height:1.5;word-break:break-all}
.mrefs .srcref{display:block}

/* ===== 文献史料：站内直读 ===== */
.lit-card{background:var(--paper2);border:1px solid var(--line);border-radius:12px;margin-bottom:14px;overflow:hidden}
.lit-card .tl-item{border:none;background:none;padding:18px 20px 8px;margin:0}
.lit-body{padding:0 20px 4px;border-top:1px dashed var(--line2);margin-top:10px}
.lit-sec{margin:14px 0}
.lit-sec h5{font-size:12px;letter-spacing:.12em;color:var(--red);margin:0 0 6px;text-transform:uppercase}
.lit-sec p{font-size:14px;color:var(--ink2);line-height:1.85;margin:0}
.lit-quotes{margin:14px 0}
.lit-quotes summary{cursor:pointer;font-size:12px;letter-spacing:.12em;color:var(--red);text-transform:uppercase;margin-bottom:8px}
.lit-quotes blockquote{margin:0 0 10px;padding:10px 14px;background:var(--paper);border-left:3px solid var(--red);border-radius:0 8px 8px 0}
.lit-quotes .qtext{font-size:14.5px;line-height:1.9;color:var(--ink);margin:0 0 6px}
.lit-quotes .qsrc{font-size:12px;color:var(--ink3);margin:0}
.lit-foot{padding:0 20px 16px}

/* ===== 方音档案 ===== */
.au-toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:16px 0 10px}
.au-toolbar input[type=search]{flex:1;min-width:200px;padding:9px 12px;border:1px solid var(--line2);border-radius:8px;background:var(--paper2);font-size:14px}
.au-toolbar select{padding:9px 10px;border:1px solid var(--line2);border-radius:8px;background:var(--paper2);font-size:13.5px}
.chk{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;color:var(--ink2)}
.au-actions{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 10px}
.au-list{display:flex;flex-direction:column;gap:10px;margin-top:14px}
.au-row{display:flex;gap:16px;align-items:flex-start;background:var(--paper2);border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.au-row.has{border-color:#b8cfc4;background:linear-gradient(90deg,#f6faf7,var(--paper2) 40%)}
.au-main{flex:1;min-width:0}
.au-head{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-bottom:8px}
.au-id{font-family:ui-monospace,Consolas,monospace;font-size:12px;color:var(--ink3);margin-right:4px}
.au-text{font-size:18px;line-height:1.8;color:var(--ink);margin:0 0 6px;letter-spacing:.01em}
.au-man{font-size:13.5px;line-height:1.75;color:var(--ink3);margin:0}
.au-side{width:230px;flex:0 0 230px;display:flex;flex-direction:column;gap:8px;align-items:stretch}
.au-side audio{width:100%;height:34px}
.au-side .btn{width:100%;text-align:center}
.btn.rec{background:var(--red);color:#fff;border-color:var(--red)}
.btn.danger{color:#a33}
.au-big{font-size:20px;line-height:1.9;color:var(--ink);letter-spacing:.01em}
.au-btns{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.au-form{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.au-form label{display:flex;flex-direction:column;gap:4px;font-size:12.5px;color:var(--ink3)}
.au-form input,.au-form select,.au-form textarea{padding:8px 10px;border:1px solid var(--line2);border-radius:8px;background:var(--paper);font-size:13.5px;font-family:inherit;color:var(--ink)}
.au-form textarea{resize:vertical}
.au-form .btn,.au-form button{grid-column:1/-1;justify-self:start}
code{background:var(--paper);border:1px solid var(--line2);border-radius:4px;padding:1px 5px;font-size:12.5px}

/* =========================================================
   一、平板（≤1000px）
   ========================================================= */
@media(max-width:1000px){
  .hero,.entry-grid,.card-grid,.card-grid.wide,.about-grid,.view-grid,.tale-grid{grid-template-columns:1fr 1fr}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  /* 方音档案：侧栏转为横向操作条 */
  .au-row{flex-direction:column}
  .au-side{width:100%;flex:none;flex-direction:row;flex-wrap:wrap;align-items:center}
  .au-side .btn{width:auto;flex:1 1 auto}
  .au-side audio{flex:1 1 220px;width:auto}
  .au-form{grid-template-columns:1fr}
}

/* =========================================================
   二、手机（≤720px）
   ========================================================= */
@media(max-width:720px){
  .wrap{padding:0 16px}
  /* 刘海屏 / 圆角屏安全区 */
  @supports(padding:env(safe-area-inset-left)){
    .wrap{padding-left:max(16px,env(safe-area-inset-left));padding-right:max(16px,env(safe-area-inset-right))}
  }
  body{font-size:14.5px;line-height:1.72}

  /* --- 顶部：品牌紧凑 + 导航横向滑动 --- */
  .header-inner{flex-direction:column;align-items:stretch;gap:8px;padding-top:8px;padding-bottom:8px}
  .brand{gap:10px}
  .brand-mark{width:32px;height:32px;font-size:17px;border-radius:7px}
  .brand h1{font-size:16.5px}
  .brand-sub{display:none}
  .nav{
    flex-wrap:nowrap;overflow-x:auto;overflow-y:hidden;
    -webkit-overflow-scrolling:touch;scrollbar-width:none;-ms-overflow-style:none;
    margin:0 -16px;padding:0 16px 2px;gap:6px;
  }
  .nav::-webkit-scrollbar{display:none}
  .nav a{white-space:nowrap;flex:none;padding:7px 13px;font-size:14px}

  /* --- 页面留白 --- */
  .page{padding:22px 0 48px}
  .section{margin-top:26px}
  .section-head{margin-bottom:12px}
  .section-head h3{font-size:17px}
  .lead{padding:12px 14px;font-size:13.5px}

  /* --- Hero --- */
  .hero{grid-template-columns:1fr;gap:18px;margin-bottom:26px}
  .hero-text h2{font-size:21px;line-height:1.45}
  .hero-text p{font-size:14px}
  .hero-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px}
  .hero-actions .btn{text-align:center;min-height:44px;padding:11px 12px}
  .hero-actions .btn:last-child{grid-column:1/-1}
  .hero-cards{grid-template-columns:1fr 1fr;gap:8px}
  .mini-stat{padding:10px 12px}
  .mini-stat b{font-size:17px}
  .mini-stat span{font-size:11.5px}

  /* --- 网格一律单列 --- */
  .entry-grid,.card-grid,.card-grid.wide,.about-grid,.view-grid,.tale-grid,.stat-grid,.phon{grid-template-columns:1fr}
  .entry-card{padding:14px 16px;gap:2px}
  .entry-card h4{font-size:16px}
  .d-card,.a-card,.m-card{padding:14px 15px}
  .d-card h4,.a-card h4{font-size:16px}
  /* 触摸设备不保留 hover 位移，避免点击后样式粘住 */
  .entry-card:hover,.d-card:hover,.a-card:hover,.zone:hover{transform:none;box-shadow:none}

  /* --- 分区示意图：改为卡片流 --- */
  .schematic{position:static;height:auto;display:flex;flex-wrap:wrap;gap:8px;padding:10px;background:var(--paper2)}
  .zone{position:static;transform:none;width:calc(50% - 4px);padding:8px 10px;box-shadow:none}
  .zone:active{background:var(--line2)}
  .zone .zname{font-size:13.5px}
  .zone .zsub{font-size:11px;line-height:1.45}
  .map-legend{gap:8px 12px;font-size:12px}

  /* --- 筛选与搜索：宽度撑满 + 16px 防 iOS 聚焦缩放 --- */
  .filters{gap:8px}
  .filters input,.filters select{width:100%;min-width:0;font-size:16px;padding:10px 12px}
  .filters select{width:auto;flex:1 1 calc(50% - 4px)}
  .chips{gap:6px;margin-bottom:12px}
  .chip{padding:7px 13px;font-size:13px}

  /* --- 表格：横向滑动 --- */
  .table-scroll{-webkit-overflow-scrolling:touch}
  table{font-size:12.5px;min-width:520px}
  th,td{padding:7px 9px}

  /* --- 图表与统计 --- */
  .bar-row{gap:8px;font-size:12.5px}
  .bar-row .bl{width:78px}
  .bar-row .bv{width:44px}
  .stat{padding:14px 15px}
  .stat b{font-size:21px}
  .usage-box{padding:16px}
  .bullets{padding-left:18px}
  .view{padding:12px 14px}

  /* --- 弹层：手机近全屏，底部留操作空间 --- */
  .modal{padding:0;align-items:stretch}
  .modal-panel{
    max-width:100%;width:100%;max-height:100vh;height:100%;
    /* 动态视口高度：规避 iOS 地址栏伸缩导致的高度跳变 */
    max-height:100dvh;height:100dvh;
    border-radius:0;padding:46px 16px 28px;box-shadow:none;
    -webkit-overflow-scrolling:touch;overscroll-behavior:contain;
  }
  .modal h3{font-size:19px;padding-right:26px}
  .modal .msub{font-size:12.5px}
  .modal-close{
    top:6px;right:8px;width:38px;height:38px;font-size:24px;
    display:flex;align-items:center;justify-content:center;background:rgba(255,253,248,.9);border-radius:50%;
  }
  .mblock{margin-bottom:15px}
  .wordchip{font-size:13px}

  /* --- 文献卡片 --- */
  .lit-card .tl-item{padding:14px 14px 6px}
  .lit-body,.lit-foot{padding-left:14px;padding-right:14px}
  .lit-sec p{font-size:13.5px;line-height:1.8}
  .lit-quotes blockquote{padding:9px 12px}
  .lit-quotes .qtext{font-size:13.5px;line-height:1.85}

  /* --- 方音档案 --- */
  .au-toolbar{gap:8px;margin:12px 0 8px}
  .au-toolbar input[type=search]{flex:1 1 100%;min-width:0;font-size:16px;padding:10px 12px}
  .au-toolbar select{flex:1 1 calc(50% - 4px);min-width:0;font-size:16px;padding:10px 12px}
  .chk{font-size:13.5px}
  .au-actions{gap:8px}
  .au-actions .btn{flex:1 1 auto;min-height:42px}
  .au-list{gap:10px;margin-top:12px}
  .au-row{padding:12px 13px;gap:12px}
  .au-text{font-size:16.5px;line-height:1.75}
  .au-man{font-size:13px}
  .au-side{gap:8px}
  .au-side audio{flex:1 1 100%;width:100%;height:38px}
  .au-side .btn{min-height:40px}
  .au-big{font-size:18px;line-height:1.85}
  .au-form input,.au-form select,.au-form textarea{font-size:16px;padding:10px 12px}
  code{font-size:12px;word-break:break-all}

  /* --- 关于与页脚 --- */
  .about-card{padding:15px 16px}
  .ref-list{max-height:320px}
  .site-footer{padding:20px 0;font-size:12.5px}
  @supports(padding:env(safe-area-inset-bottom)){
    .site-footer{padding-bottom:calc(20px + env(safe-area-inset-bottom))}
    .modal-panel{padding-bottom:calc(28px + env(safe-area-inset-bottom))}
  }
}

/* =========================================================
   三、小屏手机（≤400px）
   ========================================================= */
@media(max-width:400px){
  .wrap{padding:0 12px}
  .nav{margin:0 -12px;padding:0 12px 2px}
  .zone{width:100%}
  .hero-cards{grid-template-columns:1fr}
  .hero-actions{grid-template-columns:1fr}
  .modal-panel{padding:44px 13px 24px}
  .au-toolbar select{flex:1 1 100%}
}