:root{
  --blue:#3B6FB0; --green:#2E8B57; --amber:#C8743A; --purple:#7B4FB0;
  --red:#C0504D; --ink:#222; --sub:#555; --line:#e6e6e6; --bg:#fff; --soft:#f6f8fb;
}
*{box-sizing:border-box;}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);
  background:var(--bg);line-height:1.78;font-size:15px;}
a{color:var(--blue);text-decoration:none;}
a:hover{text-decoration:underline;}
.wrap{max-width:960px;margin:0 auto;padding:0 22px 70px;}
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;}
.site-header .bar{max-width:1100px;margin:0 auto;display:flex;align-items:center;gap:18px;
  padding:12px 22px;flex-wrap:wrap;}
.site-header .brand{font-weight:800;font-size:18px;color:var(--ink);}
.site-header .brand small{color:var(--sub);font-weight:500;font-size:12px;margin-left:6px;}
.site-header .nav{display:flex;gap:16px;flex-wrap:wrap;margin-left:auto;}
.site-header .nav a{color:var(--sub);font-size:13.5px;}
.crumbs{font-size:12.5px;color:var(--sub);padding:14px 0 0;}
.crumbs a{color:var(--blue);}
.hero{background:linear-gradient(135deg,#eef4fc,#f3f8f3);border:1px solid var(--line);
  border-radius:14px;padding:26px 28px;margin:18px 0;}
.hero h1{margin:0 0 8px;font-size:27px;}
.hero .sub{color:var(--sub);font-size:15px;margin:0;max-width:760px;}
.answer-box{background:#fff9e9;border:1px solid #f0d9a2;border-left:5px solid var(--amber);
  border-radius:10px;padding:16px 20px;margin:18px 0;font-size:15px;}
.answer-box b{color:#9a5b12;}
h1.page{font-size:25px;margin:8px 0 4px;}
h2{font-size:19px;margin:30px 0 12px;padding-left:11px;border-left:5px solid var(--blue);}
h3{font-size:16px;margin:20px 0 8px;color:var(--blue);}
p{margin:10px 0;}
.card{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin:14px 0;}
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px;margin:14px 0;}
.cat-item{background:#fff;border:1px solid var(--line);border-radius:11px;padding:14px 16px;display:block;color:var(--ink);}
.cat-item:hover{text-decoration:none;border-color:var(--blue);box-shadow:0 2px 10px rgba(59,111,176,.12);}
.cat-item b{display:block;font-size:15px;}
.cat-item span{color:var(--sub);font-size:12px;}
.cat-item em{display:block;color:#777;font-size:12px;margin-top:4px;font-style:normal;}
table{width:100%;border-collapse:collapse;margin:12px 0;font-size:13.5px;}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top;}
th{background:#eef2f7;font-weight:600;}
tr:nth-child(even){background:#fafbfc;}
.tag{display:inline-block;background:#eef2f7;border:1px solid var(--line);border-radius:20px;
  padding:2px 11px;font-size:12px;color:var(--sub);margin:0 6px 6px 0;}
.tier-a{color:var(--green);font-weight:700;}
.tier-b{color:var(--amber);font-weight:700;}
.tier-c{color:var(--purple);font-weight:700;}
.evi{background:#eefaf1;border:1px solid #bfe6cd;border-left:4px solid var(--green);
  border-radius:9px;padding:12px 16px;font-size:13px;color:#2c6b43;margin:14px 0;}
.evib{background:#fff4ea;border:1px solid #f3cf9d;border-left:4px solid var(--amber);
  border-radius:9px;padding:12px 16px;font-size:13px;color:#8a5a16;margin:14px 0;}
.faq{background:#fff;border:1px solid var(--line);border-radius:12px;padding:6px 20px;margin:14px 0;}
.faq-item{border-bottom:1px solid var(--line);padding:14px 0;}
.faq-item:last-child{border-bottom:none;}
.faq-item q{font-weight:700;color:var(--ink);}
.faq-item a{font-weight:700;}
.related{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:14px 20px;margin:18px 0;}
.related h3{margin-top:0;}
.related ul{margin:6px 0;padding-left:20px;}
.related li{margin:4px 0;}
.breadcrumb{font-size:12.5px;}
.local-tip{background:#fff8e1;border:1px solid #f0dca0;border-radius:10px;padding:10px 16px;margin:14px 0;font-size:13px;color:#8a5a16;}
footer{border-top:1px solid var(--line);margin-top:40px;padding-top:18px;color:var(--sub);font-size:12.5px;}
.kpi{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0;}
.kpi .box{flex:1;min-width:130px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 14px;text-align:center;}
.kpi .num{font-size:22px;font-weight:800;color:var(--blue);}
.kpi .lab{font-size:12px;color:var(--sub);margin-top:2px;}
.vd-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px;margin:14px 0;}
.vd-card{background:#fff;border:1px solid var(--line);border-top:3px solid var(--blue);
  border-radius:12px;padding:14px 16px;font-size:13.5px;}
.vd-card.new{border-top-color:var(--green);}
.vd-head{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:4px;}
.vd-head .badge{display:inline-block;font-size:11px;font-weight:600;color:#fff;background:var(--green);
  border-radius:10px;padding:1px 8px;margin-left:8px;vertical-align:middle;}
.vd-en{display:block;font-size:11.5px;color:var(--sub);font-weight:500;margin-top:1px;}
.vd-meta{color:var(--sub);font-size:12.5px;margin:4px 0 8px;line-height:1.7;}
.vd-row{margin:6px 0;line-height:1.65;}
.vd-row>span{display:inline-block;min-width:62px;color:var(--blue);font-weight:600;font-size:12.5px;
  margin-right:6px;}
.vd-row ul{margin:4px 0 4px 0;padding-left:18px;}
.vd-row li{margin:2px 0;}
.vd-src{font-size:11.5px;color:#8a8a8a;margin-top:8px;border-top:1px dashed var(--line);padding-top:6px;}
@media(max-width:640px){
  .hero h1{font-size:22px;} .hero .sub{font-size:14px;}
  h1.page{font-size:21px;} h2{font-size:17px;}
  .site-header .nav{gap:11px;} .site-header .nav a{font-size:12px;}
  .vd-grid{grid-template-columns:1fr;}
}
/* 站内轻量搜索 + 页脚链接 */
.site-header .brand a{color:var(--ink);}
.site-header .brand a:hover{text-decoration:none;}
.site-header .navsearch{margin-left:auto;display:flex;align-items:center;}
.site-header .navsearch input{width:180px;max-width:42vw;padding:7px 14px;border:1px solid var(--line);
  border-radius:22px;font-size:13px;outline:none;background:#fafbfc;color:var(--ink);}
.site-header .navsearch input:focus{border-color:var(--blue);background:#fff;box-shadow:0 0 0 3px rgba(59,111,176,.12);}
.site-header .nav-toggle{display:none;align-items:center;justify-content:center;background:#fff;border:1px solid var(--line);border-radius:9px;font-size:18px;line-height:1;padding:6px 12px;cursor:pointer;color:var(--ink);}
.site-header .nav-toggle:active{background:#eef4fa;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0;}
footer a{color:var(--blue);}
.footer-links{margin:0 0 6px;font-size:12.5px;}
.footer-links a{margin-right:16px;}
.search-wrap{max-width:780px;margin:8px auto 0;}
.search-box{display:flex;gap:10px;margin:6px 0 14px;}
.search-box input{flex:1;padding:12px 16px;border:1px solid var(--line);border-radius:12px;font-size:16px;outline:none;}
.search-box input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(59,111,176,.12);}
.search-meta{color:var(--sub);font-size:13px;margin:2px 0 12px;}
.search-results{list-style:none;padding:0;margin:0;}
.search-item{border:1px solid var(--line);border-radius:12px;padding:13px 16px;margin:10px 0;background:#fff;}
.search-item:hover{border-color:var(--blue);box-shadow:0 2px 10px rgba(59,111,176,.1);}
.search-item a{font-size:16px;font-weight:700;color:var(--ink);}
.search-item .cat{display:inline-block;font-size:11.5px;color:#fff;background:var(--blue);border-radius:10px;padding:1px 9px;margin-left:8px;vertical-align:middle;}
.search-item .url{color:var(--sub);font-size:12px;margin-top:4px;word-break:break-all;}
.search-empty{color:var(--sub);padding:18px 0;}
@media(max-width:640px){
  .site-header .navsearch input{width:130px;max-width:38vw;}
}
@media(max-width:880px){
  .site-header .bar{flex-wrap:wrap;}
  .site-header .navsearch{order:2;margin-left:auto;}
  .site-header .nav-toggle{order:3;display:inline-flex;margin-left:10px;}
  .site-header .nav{order:4;display:none;position:absolute;top:100%;left:0;right:0;background:#fff;
    flex-direction:column;gap:0;padding:8px 16px 14px;border-bottom:1px solid var(--line);
    box-shadow:0 10px 24px rgba(0,0,0,.10);z-index:30;}
  .site-header .nav.open{display:flex;}
  .site-header .nav a{padding:11px 2px;border-bottom:1px solid #f0f0f0;font-size:14px;}
  .site-header .nav a:last-child{border-bottom:none;}
}
/* 工艺流程图（数据驱动 SVG） */
.flow-svg{display:block;width:100%;max-width:760px;height:auto;margin:10px 0 16px;padding:8px;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 1px 2px rgba(26,43,60,.05);}
.dev-svg{display:block;width:100%;max-width:760px;height:auto;margin:14px 0 18px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 1px 2px rgba(26,43,60,.05);}
@media(max-width:640px){.flow-svg{max-width:100%;}.dev-svg{max-width:100%;}}