/* ============ 设计令牌：现代简洁浅色（前台视觉基准 v2） ============ */
:root{
  --brand:#1A5FD0; --brand-2:#3B82F6; --brand-soft:#EBF2FE;
  --accent:#F59E0B;
  --bg:#F6F8FB; --card:#FFFFFF; --line:#E9EEF5;
  --text:#1F2937; --text-2:#6B7280; --text-3:#9CA3AF;
  --grad:linear-gradient(135deg,#1A5FD0 0%,#3B82F6 60%,#60A5FA 100%);
  --shadow-s:0 2px 8px rgba(31,66,135,.06);
  --shadow-m:0 10px 30px rgba(31,66,135,.10);
  --shadow-l:0 20px 50px rgba(31,66,135,.14);
  --r-lg:20px; --r-md:14px;
  --sans:"PingFang SC","Microsoft YaHei",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--text);background:var(--bg);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
/* ============ 头部（流式自适应：≥1400 全尺寸 / 992~1399 收紧 / <992 汉堡） ============ */
.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.85);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header .wrap{display:flex;align-items:center;gap:calc(clamp(10px,1.4vw,20px)*var(--hs,1));height:76px}
/* 头部测量期间禁用过渡：.nav a/.btn-ipt 的 transition 会让 JS 读到缩放前的旧宽度，导致误判为放不下而折叠 */
.header.hdr-measuring,.header.hdr-measuring *{transition:none!important}
.logo{display:flex;align-items:center;gap:calc(clamp(8px,.9vw,12px)*var(--hs,1));flex:none;min-width:0}
.logo>div{min-width:0}
.logo__mark{width:calc(clamp(34px,3.4vw,46px)*var(--hs,1));height:calc(clamp(34px,3.4vw,46px)*var(--hs,1));flex:none;border-radius:13px;background:var(--grad);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:calc(clamp(14px,1.4vw,19px)*var(--hs,1));box-shadow:0 6px 16px rgba(26,95,208,.35)}
.logo__img{height:calc(clamp(38px,3.8vw,52px)*var(--hs,1));width:auto;max-width:calc(300px*var(--hs,1));object-fit:contain;display:block}
.logo__mark-img{width:calc(clamp(34px,3.4vw,46px)*var(--hs,1));height:calc(clamp(34px,3.4vw,46px)*var(--hs,1));flex:none;object-fit:contain;display:block}
.logo__name{font-size:calc(clamp(13px,1.3vw,19px)*var(--hs,1));font-weight:700;letter-spacing:.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
/* 英文副标题必须跟着 --hs 一起缩放：它是唯一不缩的元素，否则会在宽屏下固定占 288px，
   把头部整体压缩比顶到下限、只能折叠成汉堡 */
.logo__sub{font-size:calc(11px*var(--hs,1));color:var(--text-3);letter-spacing:1px;white-space:nowrap;max-width:260px;overflow:hidden;text-overflow:ellipsis}
.nav{display:flex;flex:1 1 auto;justify-content:center;gap:2px;min-width:0}
.nav a{flex:none;white-space:nowrap;padding:calc(8px*var(--hs,1)) calc(clamp(6px,.75vw,13px)*var(--hs,1));border-radius:999px;font-size:calc(clamp(11.5px,.9vw,14.5px)*var(--hs,1));color:var(--text-2);font-weight:500;transition:.2s}
.nav a:hover{color:var(--brand);background:var(--brand-soft)}
.nav a.active{color:#fff;background:var(--grad);box-shadow:0 4px 12px rgba(26,95,208,.3)}
.btn-ipt{flex:none;margin-left:auto;display:inline-flex;align-items:center;gap:calc(5px*var(--hs,1));background:var(--grad);color:#fff;font-size:calc(clamp(12px,.95vw,13.5px)*var(--hs,1));font-weight:600;padding:calc(9px*var(--hs,1)) calc(clamp(11px,1.2vw,18px)*var(--hs,1));border-radius:999px;box-shadow:0 6px 16px rgba(26,95,208,.32);transition:.25s}
.btn-ipt:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(26,95,208,.42)}
.btn-ipt svg{width:15px;height:15px;fill:currentColor}
.burger{display:none;background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px 10px;cursor:pointer;box-shadow:var(--shadow-s);margin-left:auto}
.burger span{display:block;width:18px;height:2px;background:var(--text);margin:4px 0;border-radius:2px}
/* 宽度不足时隐藏英文副标题：它不能收缩（nowrap + logo flex:none），
   每行会白占约 190px，窄屏下正是头部栏目重叠的主因 */
@media (max-width:1399px){
  .logo__sub{display:none}
}
/* ============ Hero ============ */
.hero{position:relative;padding:88px 0 80px;overflow:hidden}
.hero::before{content:"";position:absolute;width:560px;height:560px;border-radius:50%;background:radial-gradient(circle,rgba(59,130,246,.14),transparent 70%);top:-200px;right:-120px}
.hero::after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(245,158,11,.10),transparent 70%);bottom:-160px;left:-100px}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;position:relative;z-index:1}
.hero__badge{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-s);border-radius:999px;padding:7px 16px;font-size:13px;color:var(--brand);font-weight:600;margin-bottom:22px}
.hero__badge i{width:8px;height:8px;border-radius:50%;background:#10B981;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(16,185,129,.4)}50%{box-shadow:0 0 0 6px rgba(16,185,129,0)}}
.hero h1{font-size:46px;font-weight:800;line-height:1.32;letter-spacing:.5px}
.hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--text-2);margin:20px 0 30px;max-width:520px}
.hero__btns{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:14px;font-size:15px;font-weight:600;transition:.25s}
.btn--pri{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(26,95,208,.35)}
.btn--pri:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(26,95,208,.45)}
.btn--ghost{background:#fff;border:1.5px solid var(--line);color:var(--text)}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand)}
/* hero 右侧图形卡 */
.hero__art{position:relative;height:360px}
.blob{position:absolute;inset:12% 6%;border-radius:34% 66% 60% 40%/50% 40% 60% 50%;background:var(--grad);opacity:.12;animation:morph 10s ease-in-out infinite}
@keyframes morph{0%,100%{border-radius:34% 66% 60% 40%/50% 40% 60% 50%}50%{border-radius:60% 40% 34% 66%/60% 50% 40% 55%}}
.hcard{position:absolute;background:rgba(255,255,255,.9);backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-m);padding:18px 20px;display:flex;gap:14px;align-items:center;animation:float 5s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.hcard__ico{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex:none}
.hcard__ico svg{width:22px;height:22px;fill:#fff}
.hcard b{font-size:20px;display:block;line-height:1.2}
.hcard span{font-size:12.5px;color:var(--text-2)}
.hcard--1{top:6%;left:4%;animation-delay:0s}.hcard--1 .hcard__ico{background:var(--grad)}
.hcard--2{top:34%;right:0;animation-delay:1.2s}.hcard--2 .hcard__ico{background:linear-gradient(135deg,#F59E0B,#FBBF24)}
.hcard--3{bottom:6%;left:14%;animation-delay:2.2s}.hcard--3 .hcard__ico{background:linear-gradient(135deg,#10B981,#34D399)}
/* ============ 通知条 ============ */
.ticker{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.ticker .wrap{display:flex;align-items:center;gap:14px;height:54px}
.ticker__tag{flex:none;background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:700;padding:5px 14px;border-radius:999px;display:flex;gap:6px;align-items:center}
.ticker__track{flex:1;overflow:hidden;position:relative;height:100%}
.ticker__list{position:absolute;top:0;width:100%;transition:transform .5s}
.ticker__list li{height:54px;line-height:54px;font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ticker__list em{font-style:normal;color:var(--text-3);margin-right:10px;font-size:13px}
/* ============ 区块 ============ */
.section{padding:72px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:36px}
.sec-head .l small{display:block;color:var(--brand);font-weight:700;letter-spacing:3px;font-size:12px;text-transform:uppercase;margin-bottom:6px}
.sec-head .l h2{font-size:32px;font-weight:800}
.sec-head .more{font-size:14px;color:var(--text-2);display:inline-flex;align-items:center;gap:5px;background:#fff;padding:9px 18px;border-radius:999px;border:1px solid var(--line);box-shadow:var(--shadow-s);transition:.2s}
.sec-head .more:hover{color:var(--brand);border-color:var(--brand)}
/* ============ 快捷入口 ============ */
.quick-section{padding:56px 0 72px}
.quick{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.qcard{background:var(--card);border-radius:var(--r-lg);padding:28px 24px;box-shadow:var(--shadow-m);border:1px solid var(--line);transition:.3s}
.qcard:hover{transform:translateY(-6px);box-shadow:var(--shadow-l)}
.qcard__ico{width:52px;height:52px;border-radius:15px;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.qcard__ico svg{width:24px;height:24px;fill:#fff}
.qcard h3{font-size:17px;font-weight:700;margin-bottom:6px}
.qcard p{font-size:13.5px;color:var(--text-2)}
.qcard--1 .qcard__ico{background:var(--grad)}
.qcard--2 .qcard__ico{background:linear-gradient(135deg,#F59E0B,#FBBF24)}
.qcard--3 .qcard__ico{background:linear-gradient(135deg,#10B981,#34D399)}
.qcard--4 .qcard__ico{background:linear-gradient(135deg,#8B5CF6,#A78BFA)}
/* ============ 简介 ============ */
.about{display:grid;grid-template-columns:.9fr 1.1fr;gap:52px;align-items:center}
.about__pic{position:relative}
.about__pic .frame{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-l);height:340px}
.about__pic img{width:100%;height:100%;object-fit:cover}
.about__chip{position:absolute;bottom:-20px;right:-14px;background:#fff;border-radius:16px;box-shadow:var(--shadow-m);padding:16px 22px;border:1px solid var(--line);display:flex;gap:18px}
.about__chip div b{font-size:24px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.about__chip div span{font-size:12px;color:var(--text-2);display:block}
.about h3{font-size:24px;font-weight:800;margin-bottom:16px}
.about p{color:var(--text-2);margin-bottom:12px;text-align:justify}
.about .btn{margin-top:10px}
/* ============ 资讯 ============ */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.post{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:30px;box-shadow:var(--shadow-s);transition:.3s}
.post:hover{box-shadow:var(--shadow-m);transform:translateY(-3px)}
.post__head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.post__head h3{font-size:19px;font-weight:800;display:flex;align-items:center;gap:10px}
.post__head h3::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--grad)}
.post__head a{font-size:13px;color:var(--text-3)}
.post__head a:hover{color:var(--brand)}
.plist li{display:flex;gap:16px;padding:14px 10px;border-radius:12px;transition:background .2s}
.plist li:hover{background:var(--bg)}
.plist time{flex:none;width:58px;text-align:center;background:var(--brand-soft);border-radius:10px;padding:6px 0;line-height:1.3}
.plist time b{display:block;font-size:17px;color:var(--brand)}
.plist time span{font-size:11.5px;color:var(--text-2)}
.plist a{flex:1;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding-top:6px}
.plist li.hot a{color:var(--accent);font-weight:600}
/* ============ 归档 ============ */
.arch{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.acard{position:relative;border-radius:var(--r-lg);padding:34px 30px;overflow:hidden;color:#fff;transition:.3s;box-shadow:var(--shadow-m)}
.acard:hover{transform:translateY(-5px);box-shadow:var(--shadow-l)}
.acard--sup{background:linear-gradient(135deg,#0F3E9E,#1A5FD0 55%,#3B82F6)}
.acard--dl{background:linear-gradient(135deg,#B45309,#F59E0B 60%,#FBBF24)}
.acard::after{content:"";position:absolute;width:220px;height:220px;border-radius:50%;background:rgba(255,255,255,.1);right:-70px;top:-70px}
.acard::before{content:"";position:absolute;width:120px;height:120px;border-radius:50%;background:rgba(255,255,255,.08);right:60px;bottom:-50px}
.acard h3{font-size:22px;font-weight:800;margin-bottom:8px;position:relative;z-index:1}
.acard p{font-size:14px;opacity:.9;margin-bottom:20px;position:relative;z-index:1}
.tags{display:flex;flex-wrap:wrap;gap:10px;position:relative;z-index:1}
.tags a{background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.35);backdrop-filter:blur(4px);padding:6px 16px;border-radius:999px;font-size:13.5px;transition:.2s}
.tags a:hover{background:rgba(255,255,255,.32)}
/* ============ 联系 ============ */
.contact{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.ct{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--shadow-s);transition:.3s}
.ct:hover{box-shadow:var(--shadow-m);transform:translateY(-4px)}
.ct__ico{width:48px;height:48px;border-radius:14px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.ct__ico svg{width:22px;height:22px;fill:var(--brand)}
.ct h4{font-size:16px;font-weight:700;margin-bottom:6px}
.ct p{color:var(--text-2);font-size:14px}
/* ============ 友链/页脚 ============ */
.links{padding:40px 0;background:#fff;border-top:1px solid var(--line)}
.links .wrap{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.links b{font-size:15px;color:var(--text)}
.links a{font-size:13.5px;color:var(--text-2);padding:6px 16px;border-radius:999px;background:var(--bg);transition:.2s}
.links a:hover{color:var(--brand);background:var(--brand-soft)}
.footer{background:#0E1B33;color:rgba(255,255,255,.6);padding:44px 0;font-size:13.5px}
.footer .top{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;flex-wrap:wrap;padding-bottom:28px;border-bottom:1px solid rgba(255,255,255,.1);margin-bottom:24px}
.footer .fn{display:flex;gap:22px;flex-wrap:wrap}
.footer .fn a:hover{color:#fff}
.footer .cname{color:#fff;font-size:16px;font-weight:700;margin-bottom:6px}
.footer .sub{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:rgba(255,255,255,.45)}
/* ============ 弹窗 ============ */
.modal{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;padding:24px}
.modal__mask{position:absolute;inset:0;background:rgba(14,27,51,.5);backdrop-filter:blur(6px)}
.modal__box{position:relative;width:100%;max-width:500px;background:#fff;border-radius:24px;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.35);animation:pop .4s cubic-bezier(.2,.9,.3,1.15)}
@keyframes pop{from{transform:translateY(30px) scale(.95);opacity:0}to{transform:none;opacity:1}}
.modal__head{background:var(--grad);color:#fff;padding:22px 28px;font-size:18px;font-weight:800;display:flex;align-items:center;gap:10px}
.modal__head svg{width:20px;height:20px;fill:#FDE68A}
.modal__body{padding:26px 28px 6px}
.modal__body h4{font-size:17px;font-weight:700;margin-bottom:10px}
.modal__body p{color:var(--text-2);font-size:14px;text-align:justify;margin-bottom:10px}
.modal__body .meta{color:var(--text-3);font-size:12.5px}
.modal__foot{padding:20px 28px 26px;display:flex;gap:12px}
.modal__btn{flex:1;padding:12px 0;border-radius:12px;font-size:15px;font-weight:600;cursor:pointer;border:none;transition:.2s}
.modal__btn--go{background:var(--grad);color:#fff}
.modal__btn--go:hover{opacity:.9}
.modal__btn--later{background:var(--bg);color:var(--text-2);border:1px solid var(--line)}
.hidden{display:none!important}
/* ============ 子页：页头/面包屑 ============ */
.page-hero{background:var(--grad);color:#fff;padding:52px 0;position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;width:320px;height:320px;border-radius:50%;background:rgba(255,255,255,.08);right:-80px;top:-120px}
.page-hero h1{font-size:30px;font-weight:800;position:relative;z-index:1}
.page-hero .crumb{font-size:13px;opacity:.85;margin-top:8px;position:relative;z-index:1}
.page-hero .crumb a:hover{text-decoration:underline}
.subnav{display:flex;gap:10px;flex-wrap:wrap;margin:26px 0}
.subnav a{background:#fff;border:1px solid var(--line);border-radius:999px;padding:9px 20px;font-size:14px;color:var(--text-2);transition:.2s}
.subnav a:hover,.subnav a.active{color:var(--brand);border-color:var(--brand);background:var(--brand-soft)}
/* ============ 子页：列表 ============ */
.list-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-s);padding:16px 26px}
.list-card .plist li{padding:16px 10px;border-bottom:1px dashed var(--line)}
.list-card .plist li:last-child{border-bottom:none}
.empty{padding:60px 0;text-align:center;color:var(--text-3)}
/* ============ 子页：分页 ============ */
.pager{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;padding:34px 0}
.pager a,.pager span.cur{min-width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;padding:0 14px;border-radius:10px;background:#fff;border:1px solid var(--line);font-size:14px;color:var(--text-2);transition:.2s}
.pager a:hover{color:var(--brand);border-color:var(--brand)}
.pager span.cur{background:var(--grad);color:#fff;border-color:transparent;font-weight:600}
.pager .dis{opacity:.4;pointer-events:none}
/* ============ 子页：详情 ============ */
.article{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-s);padding:40px 48px;margin-bottom:26px}
.article h1{font-size:26px;font-weight:800;line-height:1.5}
.article .meta{display:flex;gap:22px;flex-wrap:wrap;color:var(--text-3);font-size:13px;padding:16px 0 22px;border-bottom:1px solid var(--line);margin-bottom:26px}
.article .body{color:var(--text);font-size:16px;line-height:1.9}
.article .body p{margin-bottom:14px;text-align:justify}
.article .body img{margin:10px auto;border-radius:10px}
.article .body table{border-collapse:collapse;width:100%;margin:14px 0}
.article .body td,.article .body th{border:1px solid var(--line);padding:8px 12px;font-size:14px}
.affix{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:22px 26px}
.affix h3{font-size:16px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.affix h3::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--grad)}
.affix li{display:flex;justify-content:space-between;gap:14px;padding:10px 4px;border-bottom:1px dashed var(--line);font-size:14.5px}
.affix li:last-child{border-bottom:none}
.affix li a{flex:1;color:var(--brand);word-break:break-all}
.affix li span{color:var(--text-3);font-size:12.5px;flex:none}
.neighbors{display:flex;justify-content:space-between;gap:16px;margin:26px 0;flex-wrap:wrap}
.neighbors a{max-width:48%;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 20px;font-size:14px;color:var(--text-2);transition:.2s;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.neighbors a:hover{color:var(--brand);border-color:var(--brand)}
/* ============ 子页：检索 ============ */
.search-bar{display:flex;gap:12px;margin:30px 0}
.search-bar input{flex:1;height:50px;border:1.5px solid var(--line);border-radius:12px;padding:0 18px;font-size:15px;font-family:var(--sans);background:#fff;outline:none;transition:.2s}
.search-bar input:focus{border-color:var(--brand)}
.search-bar button{flex:none;height:50px;padding:0 34px;border:none;border-radius:12px;background:var(--grad);color:#fff;font-size:15px;font-weight:600;cursor:pointer;font-family:var(--sans)}
.search-bar button:hover{opacity:.92}
.kw-tip{color:var(--text-2);font-size:14px;margin-bottom:14px}
.kw-tip b{color:var(--brand)}
/* ============ 响应式 ============ */
/* 中屏：Hero 变单列，快捷卡 2 列 */
@media (max-width:1199px){
  .hero{padding:64px 0 56px}
  .hero h1{font-size:38px}
  .hero .wrap{grid-template-columns:1fr;gap:44px}
  .hero__art{height:300px;max-width:480px;margin:0 auto;width:100%}
  .quick{grid-template-columns:repeat(2,1fr)}
  .article{padding:30px 28px}
}
/* 头部折叠态：JS 实测放不下时给 .header 加 collapsed（竖排下拉 + 汉堡按钮） */
.header.collapsed .wrap{height:64px}
.header.collapsed .logo__name{font-size:16px}
.header.collapsed .nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:12px 16px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-m)}
.header.collapsed .nav.open{display:flex}
.header.collapsed .nav a{padding:12px 16px;border-radius:0}
.header.collapsed .nav a.active{background:none;color:var(--brand);box-shadow:none}
.header.collapsed .burger{display:block}
.header.collapsed .btn-ipt{margin-left:auto}
/* 手机：无条件折叠 */
@media (max-width:767px){
  .header .wrap{height:64px}
  .logo__name{font-size:16px}
  .nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:12px 16px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-m)}
  .nav.open{display:flex}
  .nav a{padding:12px 16px;border-radius:0}
  .nav a.active{background:none;color:var(--brand);box-shadow:none}
  .burger{display:block}
  .btn-ipt{margin-left:auto}
}
@media (max-width:767px){
  .about,.duo,.arch,.contact{grid-template-columns:1fr}
  .quick{grid-template-columns:1fr 1fr;gap:14px}
  .qcard{padding:20px}
  .section{padding:52px 0}
  .sec-head .l h2{font-size:25px}
  .hero h1{font-size:30px}
  .about__chip{right:8px}
  .page-hero h1{font-size:24px}
  .list-card{padding:8px 16px}
  .plist a{font-size:14px;white-space:normal;line-height:1.5;padding-top:2px}
  .plist li{gap:12px;padding:13px 6px}
  .plist time{width:52px}
  .article{padding:24px 18px}
  .article h1{font-size:21px}
  .neighbors a{max-width:100%}
  .search-bar button{padding:0 20px}
  .ticker .wrap{gap:10px}
  .ticker__tag{padding:4px 10px;font-size:12px}
}


/* ============================================================
   Banner 轮播（后台可配；无图时整块隐藏）
   ============================================================ */
.banner-section{padding:8px 0 16px}
.carousel{position:relative;height:clamp(170px,25vw,330px);border-radius:var(--r-lg,20px);overflow:hidden;background:#eef3f9;border:1px solid var(--line);box-shadow:var(--shadow-m,0 6px 20px rgba(20,50,90,.08))}
.carousel__item{position:absolute;inset:0;opacity:0;transition:opacity .8s;pointer-events:none}
.carousel__item.on{opacity:1;pointer-events:auto}
.carousel__item img{width:100%;height:100%;object-fit:cover;display:block}
.carousel__dots{position:absolute;left:0;right:0;bottom:12px;display:flex;justify-content:center;gap:8px;z-index:2}.carousel__dots i{box-shadow:0 0 4px rgba(0,0,0,.25)}
.carousel__dots i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.55);cursor:pointer;transition:.3s}
.carousel__dots i.on{background:#fff;width:24px;border-radius:5px}

/* 头部检索框 */
.nav-search{display:flex;align-items:center;border:1px solid var(--line);border-radius:999px;background:#fff;padding:0 4px 0 14px;height:38px;flex:none}
.nav-search input{border:none;outline:none;font-size:13px;width:92px;background:transparent}
.nav-search button{border:none;background:var(--brand);color:#fff;width:30px;height:30px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center}
.nav-search button:hover{filter:brightness(1.1)}
@media(max-width:992px){.nav-search{display:none}}

/* 头部防挤压：logo 与导航不折行 */
.logo__name{white-space:nowrap}
.nav a{white-space:nowrap}