/* roulang page: index */
:root{
    --brand:#1A5CD8; --brand-dark:#1449AF; --brand-light:#EAF1FF;
    --accent:#FF7A1A; --teal:#12A594;
    --ink:#0A1F3D; --bg:#F5F8FC; --card:#FFFFFF; --line:#E3EAF3;
    --t1:#1B2733; --t2:#5B6B80; --t3:#8A99AC;
    --r-card:16px; --r-img:12px; --r-pill:999px; --r-btn:12px; --r-badge:6px; --r-input:10px;
    --sh-1:0 1px 2px rgba(16,42,76,.04), 0 8px 24px -12px rgba(16,42,76,.14);
    --sh-2:0 2px 4px rgba(16,42,76,.06), 0 18px 40px -16px rgba(16,42,76,.22);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  html body{
    margin:0;padding:0;background:var(--bg);color:var(--t1);
    font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;line-height:1.9;
  }
  img{max-width:100%;height:auto;display:block;border:0;}
  ul{margin:0;padding:0;list-style:none;}
  p{margin:0;}
  .wrap{max-width:1240px;margin:0 auto;padding:0 16px;width:100%;}
  @media(min-width:768px){.wrap{padding:0 24px;}}
  html h1,html h2,html h3,html h4{color:#0F2033;font-weight:700;line-height:1.3;margin:0;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px;}
  .num{font-variant-numeric:tabular-nums;}
  .clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}

  /* ---------- 导航 ---------- */
  .site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 4px 16px -8px rgba(16,42,76,.12);}
  .nav-wrap{display:flex;align-items:center;gap:16px;height:68px;}
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;}
  .brand-mark{width:40px;height:40px;border-radius:12px;background:linear-gradient(140deg,#1A5CD8,#2E7BEA 60%,#12A594);display:grid;place-items:center;color:#fff;flex:0 0 40px;}
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-text b{font-size:17px;font-weight:800;color:#0F2033;letter-spacing:.2px;}
  .brand-text small{font-size:12px;color:var(--t2);font-weight:600;}
  .main-nav{display:none;}
  @media(min-width:1024px){.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto;}}
  .nav-link{position:relative;display:inline-flex;align-items:center;gap:6px;height:44px;padding:0 14px;font-size:15px;font-weight:600;color:#33455C;border-radius:10px;transition:color .22s var(--ease);}
  .nav-link::after{content:"";position:absolute;left:50%;right:50%;bottom:8px;height:2px;background:var(--brand);border-radius:2px;transition:left .24s var(--ease),right .24s var(--ease);}
  .nav-link:hover,.nav-link:focus-visible{color:var(--brand);}
  .nav-link:hover::after,.nav-link:focus-visible::after{left:14px;right:14px;}
  .nav-link.is-active{color:var(--brand);}
  .nav-link.is-active::after{left:14px;right:14px;}
  .nav-item{position:relative;}
  .nav-caret{display:inline-flex;transition:transform .24s var(--ease);color:currentColor;}
  .nav-item:hover .nav-caret,.nav-item:focus-within .nav-caret{transform:rotate(180deg);}
  .mega-panel{
    position:absolute;top:calc(100% + 10px);left:-12px;width:700px;background:#fff;
    border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-2);padding:24px;
    display:grid;grid-template-columns:1.1fr 1fr;gap:24px;z-index:60;
    opacity:0;visibility:hidden;transform:translateY(8px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
  }
  .nav-item:hover .mega-panel,.nav-item:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
  .mega-title{font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--t3);margin-bottom:12px;}
  .mega-cat{display:flex;align-items:center;gap:10px;min-height:46px;padding:6px 10px;border-radius:10px;color:#33455C;transition:background-color .2s var(--ease),color .2s var(--ease);}
  .mega-cat:hover{background:var(--brand-light);color:var(--brand-dark);}
  .mega-cat-ico{width:28px;height:28px;border-radius:8px;background:var(--brand-light);color:var(--brand);display:grid;place-items:center;flex:0 0 28px;}
  .mega-cat b{display:block;font-size:14px;font-weight:600;line-height:1.4;}
  .mega-cat span{display:block;font-size:12px;color:var(--t3);line-height:1.5;}
  .mega-news{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:40px;padding:6px 10px;border-radius:10px;font-size:14px;color:#33455C;transition:background-color .2s var(--ease),color .2s var(--ease);}
  .mega-news em{font-style:normal;font-size:12px;color:var(--t3);font-variant-numeric:tabular-nums;flex:0 0 auto;}
  .mega-news:hover{background:var(--brand-light);color:var(--brand-dark);}
  .mega-entry{display:flex;align-items:center;gap:12px;margin-top:12px;padding:12px;border:1px solid var(--line);border-radius:12px;background:#FBFCFE;transition:border-color .2s var(--ease),background-color .2s var(--ease);}
  .mega-entry:hover{border-color:#C9DBFF;background:var(--brand-light);}
  .mega-entry-thumb{width:56px;height:56px;border-radius:10px;overflow:hidden;flex:0 0 56px;background:var(--brand-light);}
  .mega-entry-thumb img{width:100%;height:100%;object-fit:cover;}
  .mega-entry p{font-size:13px;color:var(--t2);line-height:1.5;}
  .mega-entry-arrow{color:var(--brand);transition:transform .22s var(--ease);}
  .mega-entry:hover .mega-entry-arrow{transform:translateX(4px);}
  .nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
  @media(min-width:1024px){.nav-actions{margin-left:16px;}}
  .icon-btn{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;border:1px solid var(--line);color:#33455C;transition:.22s var(--ease);}
  .icon-btn:hover{color:var(--brand);border-color:#C9DBFF;background:var(--brand-light);}
  .nav-cta{display:none;}
  @media(min-width:640px){.nav-cta{display:inline-flex;}}
  .mobile-menu{display:block;position:relative;}
  @media(min-width:1024px){.mobile-menu{display:none;}}
  .mobile-menu>summary{list-style:none;width:44px;height:44px;display:grid;place-items:center;border-radius:12px;border:1px solid var(--line);color:#33455C;cursor:pointer;}
  .mobile-menu>summary::-webkit-details-marker{display:none;}
  .mobile-panel{position:absolute;right:-16px;top:calc(100% + 14px);width:min(92vw,420px);background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-2);padding:10px 16px 16px;max-height:76vh;overflow:auto;z-index:70;}
  .m-link{display:flex;align-items:center;justify-content:space-between;min-height:52px;padding:0 6px;border-bottom:1px solid var(--line);font-size:15px;font-weight:600;color:#33455C;}
  .m-link:last-of-type{border-bottom:0;}
  .m-link.is-active{color:var(--brand);box-shadow:inset 3px 0 0 var(--brand);padding-left:14px;}
  .m-block-title{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--t3);padding:14px 6px 6px;}

  /* ---------- 按钮与徽章 ---------- */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-pill);font-size:15px;font-weight:700;transition:transform .22s var(--ease),filter .22s var(--ease),background-color .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease);white-space:nowrap;}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;}
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px -14px rgba(255,122,26,.9);}
  .btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);color:#fff;}
  .btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55);}
  .btn-ghost:hover{background:rgba(255,255,255,.14);transform:translateY(-2px);color:#fff;}
  .btn-outline{background:#fff;color:var(--brand);border:1px solid var(--brand);border-radius:var(--r-btn);}
  .btn-outline:hover{background:var(--brand-light);transform:translateY(-2px);}
  .link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);transition:color .2s var(--ease);}
  .link-more svg{transition:transform .22s var(--ease);}
  .link-more:hover{color:var(--brand-dark);}
  .link-more:hover svg{transform:translateX(4px);}
  .badge{display:inline-flex;align-items:center;gap:4px;height:26px;padding:0 10px;border-radius:var(--r-badge);font-size:13px;font-weight:600;line-height:1;}
  .badge-brand{background:var(--brand-light);color:var(--brand-dark);}
  .badge-neutral{background:#EEF2F8;color:var(--t2);}
  .badge-teal{background:#E4F6F4;color:#0B7C70;}
  .dot-live{width:6px;height:6px;border-radius:999px;background:var(--accent);display:inline-block;}

  /* ---------- 板块 ---------- */
  .section{padding:56px 0;}
  @media(min-width:768px){.section{padding:80px 0;}}
  @media(min-width:1024px){.section{padding:96px 0;}}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;flex-wrap:wrap;}
  .section-title{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3;}
  .section-desc{color:var(--t2);font-size:14px;line-height:1.6;margin-top:8px;}
  .hairline{height:1px;background:var(--line);border:0;margin:0;}

  /* ---------- Hero ---------- */
  .hero{position:relative;overflow:hidden;background:#0A1F3D url('/assets/images/backpic/back-1.png') center/cover no-repeat;min-height:560px;display:flex;align-items:center;}
  @media(min-width:1024px){.hero{min-height:72vh;}}
  .hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,31,61,.93) 0%,rgba(10,31,61,.74) 48%,rgba(10,31,61,.36) 100%);}
  .hero::after{content:"";position:absolute;inset:0;pointer-events:none;background:repeating-linear-gradient(45deg,rgba(255,255,255,.055) 0 1px,transparent 1px 16px);}
  .hero .wrap{position:relative;z-index:2;padding-top:64px;padding-bottom:64px;}
  .hero-inner{max-width:640px;}
  .hero-badge{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;background:rgba(18,165,148,.18);border:1px solid rgba(18,165,148,.5);color:#8FE6D9;font-size:13px;font-weight:600;}
  .hero h1{color:#fff;font-size:clamp(30px,4.6vw,52px);line-height:1.18;font-weight:800;margin-top:20px;letter-spacing:.2px;}
  .hero-sub{color:rgba(255,255,255,.86);font-size:17px;line-height:1.85;margin-top:16px;max-width:540px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
  .hero-stats{display:flex;flex-wrap:wrap;margin-top:36px;border-top:1px solid rgba(18,165,148,.4);padding-top:20px;gap:18px 0;}
  .hero-stat{padding:0 24px;border-right:1px solid rgba(255,255,255,.16);}
  .hero-stat:first-child{padding-left:0;}
  .hero-stat:last-child{border-right:0;}
  .hero-stat b{display:block;font-size:28px;font-weight:600;color:#fff;line-height:1.2;font-variant-numeric:tabular-nums;}
  .hero-stat b span{font-size:15px;font-weight:600;margin-left:2px;}
  .hero-stat i{display:block;font-style:normal;font-size:13px;color:rgba(255,255,255,.7);}
  .hero-covers{display:none;}
  @media(min-width:1024px){
    .hero-covers{display:flex;gap:16px;position:absolute;right:40px;bottom:52px;z-index:3;align-items:flex-end;}
    .hero-covers img{width:130px;height:174px;object-fit:cover;border-radius:12px;border:1px solid rgba(255,255,255,.3);box-shadow:0 20px 44px -18px rgba(0,0,0,.75);}
    .hero-covers img:nth-child(1){transform:rotate(-5deg) translateY(10px);}
    .hero-covers img:nth-child(2){width:152px;height:202px;}
    .hero-covers img:nth-child(3){transform:rotate(5deg) translateY(10px);}
  }

  /* ---------- 横滑片库 ---------- */
  .rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 18px;margin:0 -4px;scrollbar-width:thin;scrollbar-color:#CBD8EA transparent;}
  .rail::-webkit-scrollbar{height:6px;}
  .rail::-webkit-scrollbar-track{background:#E9EFF8;border-radius:999px;}
  .rail::-webkit-scrollbar-thumb{background:#CBD8EA;border-radius:999px;transition:background-color .2s var(--ease);}
  .rail:hover::-webkit-scrollbar-thumb{background:var(--brand);}
  .rail-card{flex:0 0 252px;scroll-snap-align:start;}
  .poster{position:relative;display:block;border-radius:16px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1);background:#0A1F3D;transition:transform .24s var(--ease),box-shadow .24s var(--ease);}
  .poster:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
  .poster img{width:100%;aspect-ratio:3/4;object-fit:cover;transition:transform .3s var(--ease);}
  .poster:hover img{transform:scale(1.04);}
  .poster-mask{position:absolute;left:0;right:0;bottom:0;padding:16px;background:linear-gradient(to top,rgba(10,31,61,.94) 0%,rgba(10,31,61,.5) 55%,rgba(10,31,61,0) 100%);}
  .poster-mask h3{color:#fff;font-size:17px;font-weight:600;line-height:1.45;}
  .poster-mask .badge{margin-bottom:8px;}
  .poster-tag{position:absolute;top:12px;left:12px;}

  /* ---------- 主推编排 ---------- */
  .feature-card{display:block;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--sh-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease);}
  .feature-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
  .feature-media{position:relative;overflow:hidden;}
  .feature-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease);}
  .feature-card:hover .feature-media img{transform:scale(1.04);}
  .feature-media .badge{position:absolute;top:14px;left:14px;background:rgba(10,31,61,.82);color:#fff;}
  .feature-body{padding:20px;}
  .feature-body h3{font-size:22px;font-weight:700;line-height:1.4;}
  .feature-body p{color:var(--t2);font-size:15px;line-height:1.85;margin-top:10px;}
  .meta-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--t3);margin-top:16px;font-variant-numeric:tabular-nums;}
  .meta-sep{width:4px;height:4px;border-radius:999px;background:#C7D3E2;display:inline-block;}
  .mini{display:flex;gap:14px;align-items:center;padding:14px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease);}
  .mini:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
  .mini .thumb{width:96px;height:64px;flex:0 0 96px;border-radius:12px;}
  .mini h3{font-size:16px;font-weight:600;line-height:1.45;}
  .mini .meta-row{margin-top:6px;}
  .thumb{overflow:hidden;border-radius:12px;background:linear-gradient(135deg,#EAF1FF,#D6E4FF);position:relative;}
  .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
  .mini:hover .thumb img{transform:scale(1.05);}

  /* ---------- 分类片单 ---------- */
  .cat-block{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-1);padding:20px;transition:box-shadow .24s var(--ease);}
  .cat-block:hover{box-shadow:var(--sh-2);}
  .cat-block-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:6px;}
  .cat-block-head h3{font-size:20px;font-weight:700;line-height:1.4;}
  .cat-row{display:flex;align-items:center;gap:12px;padding:12px 8px;border-bottom:1px solid var(--line);border-radius:10px;transition:background-color .2s var(--ease);}
  .cat-row:last-child{border-bottom:0;}
  .cat-row:hover{background:#F0F5FF;}
  .cat-row .thumb{width:64px;height:48px;flex:0 0 64px;border-radius:10px;}
  .cat-row-body{flex:1 1 auto;min-width:0;}
  .cat-row-body h4{font-size:15px;font-weight:600;line-height:1.45;}
  .cat-row-body .meta-row{margin-top:6px;}
  .cat-arrow{color:var(--brand);flex:0 0 auto;transition:transform .22s var(--ease);}
  .cat-row:hover .cat-arrow{transform:translateX(4px);}

  /* ---------- 资讯卡 ---------- */
  .news-grid{display:grid;gap:20px;grid-template-columns:1fr;}
  @media(min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr);}}
  @media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
  .news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--sh-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease);}
  .news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
  .news-media{padding:14px 14px 0;}
  .news-media .thumb{aspect-ratio:16/10;}
  .news-card:hover .news-media img{transform:scale(1.04);}
  .news-body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1 1 auto;}
  .news-body h3{font-size:17px;font-weight:600;line-height:1.45;margin-top:10px;}
  .news-body .clamp-3{color:var(--t2);font-size:14px;line-height:1.8;margin-top:10px;}
  .news-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--t3);font-variant-numeric:tabular-nums;}
  .news-foot .link-more{font-size:13px;}
  .empty-state{grid-column:1/-1;max-width:420px;margin:8px auto;text-align:center;padding:40px 20px;background:#fff;border:1px dashed #D3DFEF;border-radius:16px;}
  .empty-state svg{color:var(--brand);margin:0 auto 12px;}
  .empty-state h3{font-size:16px;font-weight:600;}
  .empty-state p{font-size:14px;color:var(--t2);margin-top:8px;}
  .empty-state .btn{margin-top:18px;}

  /* ---------- 证据板块 ---------- */
  .evidence-media{border-radius:16px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1);background:var(--brand-light);}
  .evidence-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
  .point-list li{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);}
  .point-list li:last-child{border-bottom:0;}
  .point-ico{width:30px;height:30px;flex:0 0 30px;border-radius:9px;background:var(--brand-light);color:var(--brand);display:grid;place-items:center;}
  .point-list b{display:block;font-size:16px;font-weight:600;line-height:1.5;}
  .point-list span{display:block;font-size:14px;color:var(--t2);line-height:1.75;margin-top:2px;}
  .stat-strip{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:26px;}
  @media(min-width:768px){.stat-strip{grid-template-columns:repeat(4,1fr);}}
  .stat-box{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;}
  .stat-box b{display:block;font-size:22px;font-weight:600;color:var(--teal);font-variant-numeric:tabular-nums;line-height:1.3;}
  .stat-box span{font-size:13px;color:var(--t2);}

  /* ---------- FAQ ---------- */
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px;padding:16px 4px;font-size:17px;font-weight:600;color:#0F2033;cursor:pointer;list-style:none;transition:color .2s var(--ease);}
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--brand);}
  .faq-icon{position:relative;width:22px;height:22px;flex:0 0 22px;color:var(--brand);}
  .faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease);}
  .faq-icon::before{width:14px;height:2px;transform:translate(-50%,-50%);}
  .faq-icon::after{width:2px;height:14px;transform:translate(-50%,-50%);}
  .faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
  .faq-answer{padding:0 4px 20px;max-width:760px;color:var(--t2);font-size:15px;line-height:1.85;}

  /* ---------- CTA 波段 ---------- */
  .cta-band{position:relative;overflow:hidden;background:#0A1F3D;padding:56px 0;}
  @media(min-width:768px){.cta-band{padding:72px 0;}}
  .cta-band::before{content:"";position:absolute;right:-100px;top:-140px;width:440px;height:440px;background:radial-gradient(circle,rgba(255,122,26,.34),rgba(255,122,26,0) 70%);pointer-events:none;}
  .cta-band::after{content:"";position:absolute;inset:0;pointer-events:none;background:repeating-linear-gradient(45deg,rgba(255,255,255,.045) 0 1px,transparent 1px 18px);}
  .cta-inner{position:relative;z-index:2;display:flex;flex-direction:column;gap:24px;align-items:flex-start;}
  @media(min-width:768px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between;}}
  .cta-inner h2{color:#fff;font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.35;}
  .cta-inner p{color:rgba(255,255,255,.76);font-size:15px;line-height:1.8;margin-top:10px;max-width:520px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#0A1F3D;color:rgba(255,255,255,.72);padding:56px 0 0;position:relative;}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
  @media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr;}}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
  .footer-brand .brand-mark{background:linear-gradient(140deg,#1A5CD8,#12A594);}
  .footer-brand b{color:#fff;font-size:17px;font-weight:800;}
  .footer-brand small{display:block;color:rgba(255,255,255,.6);font-size:12px;font-weight:600;}
  .footer-note{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:320px;}
  .footer-title{color:#fff;font-size:15px;font-weight:700;margin-bottom:12px;}
  .footer-link{display:inline-block;padding:6px 0;font-size:14px;color:rgba(255,255,255,.7);transition:color .2s var(--ease),transform .2s var(--ease);}
  .footer-link:hover{color:#fff;transform:translateX(2px);}
  .footer-disclaimer{font-size:13px;line-height:1.8;color:rgba(255,255,255,.56);}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.6);font-variant-numeric:tabular-nums;}
  .to-top{position:fixed;right:18px;bottom:18px;z-index:40;width:48px;height:48px;border-radius:999px;background:var(--brand);color:#fff;display:grid;place-items:center;box-shadow:0 14px 30px -14px rgba(26,92,216,.95);transition:transform .22s var(--ease),background-color .22s var(--ease);}
  .to-top:hover{background:var(--brand-dark);transform:translateY(-3px);color:#fff;}
  @media(min-width:768px){.to-top{width:52px;height:52px;right:28px;bottom:28px;}}

/* roulang page: article */
:root{
    --brand:#1A5CD8;
    --brand-deep:#1449AF;
    --brand-soft:#EAF1FF;
    --accent:#FF7A1A;
    --teal:#12A594;
    --ink:#0A1F3D;
    --bg:#F5F8FC;
    --card:#FFFFFF;
    --line:#E3EAF3;
    --txt:#1B2733;
    --sub:#5B6B80;
    --mute:#8A99AC;
    --r-card:16px;
    --r-img:12px;
    --r-btn:999px;
    --r-btn2:12px;
    --r-badge:6px;
    --r-input:10px;
    --sh:0 1px 2px rgba(16,42,76,.04), 0 8px 24px -12px rgba(16,42,76,.14);
    --sh-hover:0 2px 4px rgba(16,42,76,.06), 0 18px 40px -16px rgba(16,42,76,.22);
    --ease:cubic-bezier(.2,.7,.3,1);
    --num:tabular-nums;
  }
  *,*::before,*::after{ box-sizing:border-box; }
  html{ scroll-behavior:smooth; }
  body{
    margin:0;
    background:var(--bg);
    color:var(--txt);
    font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.9;
    -webkit-font-smoothing:antialiased;
  }
  img{ max-width:100%; display:block; }
  a{ color:inherit; text-decoration:none; }
  button{ font:inherit; }
  input,button{ font-family:inherit; }
  a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
    outline:2px solid var(--brand);
    outline-offset:2px;
    border-radius:6px;
  }
  .sr-only{ position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; border:0; }
  .wrap{ max-width:1240px; margin:0 auto; padding:0 16px; }
  @media (min-width:768px){ .wrap{ padding:0 24px; } }
  .clamp-2{ display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
  .clamp-3{ display:-webkit-box; -webkit-line-clamp:3; -webkit-box-orient:vertical; overflow:hidden; }
  .num{ font-variant-numeric:tabular-nums; font-weight:600; }

  /* ---------- header / nav ---------- */
  .site-header{
    position:sticky; top:0; z-index:50;
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:0 4px 16px -8px rgba(16,42,76,.12);
  }
  .header-inner{ display:flex; align-items:center; gap:24px; min-height:72px; }
  .brand{ display:flex; align-items:center; gap:10px; flex:none; }
  .brand-mark{
    width:38px; height:38px; border-radius:11px; flex:none;
    background:linear-gradient(135deg,#1A5CD8 0%,#12A594 100%);
    color:#fff; display:grid; place-items:center;
  }
  .brand-text b{ display:block; font-size:17px; font-weight:800; color:var(--ink); line-height:1.2; letter-spacing:.4px; }
  .brand-text small{ display:block; font-size:12px; line-height:1.4; color:var(--mute); }
  .main-nav{ display:flex; align-items:center; gap:2px; margin-left:auto; }
  .nav-item{ position:relative; }
  .nav-link{
    position:relative;
    display:inline-flex; align-items:center; gap:6px;
    height:72px; padding:0 14px;
    font-size:15px; font-weight:600; color:var(--sub);
    transition:color .22s var(--ease);
  }
  .nav-link::after{
    content:""; position:absolute; left:50%; bottom:16px;
    width:0; height:2px; border-radius:2px; background:var(--brand);
    transform:translateX(-50%);
    transition:width .22s var(--ease);
  }
  .nav-link:hover,.nav-link:focus-visible{ color:var(--brand); }
  .nav-link:hover::after,.nav-link:focus-visible::after{ width:26px; }
  .nav-link.is-active{ color:var(--brand); }
  .nav-link.is-active::after{ width:26px; }
  .nav-caret{ display:inline-flex; transition:transform .24s var(--ease); color:var(--mute); }
  .nav-item:hover .nav-caret,.nav-item:focus-within .nav-caret{ transform:rotate(180deg); color:var(--brand); }

  .mega-panel{
    position:absolute; top:calc(100% - 8px); left:50%;
    width:700px; padding:24px;
    background:#fff; border:1px solid var(--line); border-radius:16px;
    box-shadow:var(--sh-hover);
    display:grid; grid-template-columns:1.1fr 1fr .95fr; gap:20px;
    opacity:0; visibility:hidden; pointer-events:none;
    transform:translateX(-50%) translateY(8px);
    transition:opacity .24s var(--ease), transform .24s var(--ease), visibility .24s var(--ease);
  }
  .mega-panel::before{ content:""; position:absolute; left:0; right:0; top:-14px; height:14px; }
  .nav-item:hover .mega-panel,
  .nav-item:focus-within .mega-panel{
    opacity:1; visibility:visible; pointer-events:auto;
    transform:translateX(-50%) translateY(0);
  }
  .mega-title{ margin:0 0 10px; font-size:13px; font-weight:700; letter-spacing:.6px; color:var(--mute); }
  .mega-cat{
    display:flex; gap:10px; align-items:center; padding:9px 10px; border-radius:12px;
    transition:background .2s var(--ease);
  }
  .mega-cat:hover{ background:var(--brand-soft); }
  .mega-cat-ico{
    width:32px; height:32px; border-radius:9px; flex:none;
    background:var(--brand-soft); color:var(--brand);
    display:grid; place-items:center;
  }
  .mega-cat b{ display:block; font-size:14px; font-weight:600; color:var(--txt); line-height:1.5; }
  .mega-cat span span{ display:block; font-size:13px; color:var(--mute); line-height:1.5; }
  .mega-post{
    display:flex; align-items:center; justify-content:space-between; gap:12px;
    padding:9px 10px; border-radius:10px; font-size:14px; color:var(--sub);
    transition:background .2s var(--ease), color .2s var(--ease);
  }
  .mega-post:hover{ background:var(--brand-soft); color:var(--brand-deep); }
  .mega-post-t{ overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
  .mega-post-d{ flex:none; font-size:13px; color:var(--mute); font-variant-numeric:tabular-nums; }
  .mega-card{
    display:flex; flex-direction:column; gap:10px;
    padding:14px; border:1px solid var(--line); border-radius:14px; background:#F8FBFF;
    transition:box-shadow .24s var(--ease), transform .24s var(--ease);
  }
  .mega-card:hover{ box-shadow:var(--sh); transform:translateY(-3px); }
  .mega-card-img{ height:76px; border-radius:10px; background:url(/assets/images/coverpic/cover-5.webp) center/cover; }
  .mega-card-txt{ font-size:14px; font-weight:600; color:var(--txt); line-height:1.6; }
  .mega-card-more{ display:inline-flex; align-items:center; gap:6px; font-size:13px; font-weight:600; color:var(--brand); }
  .mega-card:hover .mega-card-more svg{ transform:translateX(4px); }
  .mega-card-more svg{ transition:transform .22s var(--ease); }

  .header-tools{ display:flex; align-items:center; gap:10px; flex:none; }
  .icon-btn{
    width:44px; height:44px; border-radius:var(--r-btn); border:1px solid var(--line);
    background:#fff; color:var(--sub); display:grid; place-items:center;
    transition:color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
  }
  .icon-btn:hover{ color:var(--brand); border-color:var(--brand); background:var(--brand-soft); }

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    height:44px; padding:0 22px; border-radius:var(--r-btn);
    font-size:15px; font-weight:600; border:1px solid transparent; cursor:pointer;
    transition:transform .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease), color .22s var(--ease), border-color .22s var(--ease);
  }
  .btn-primary{ background:var(--accent); color:#fff; }
  .btn-primary:hover{ filter:brightness(1.08); transform:translateY(-2px); box-shadow:0 12px 24px -12px rgba(255,122,26,.6); }
  .btn-ghost{ background:#fff; border-color:var(--brand); color:var(--brand); border-radius:var(--r-btn2); }
  .btn-ghost:hover{ background:var(--brand-soft); transform:translateY(-2px); }
  .btn-sm{ height:38px; padding:0 18px; font-size:14px; }
  .btn-onink{ background:#fff; color:var(--ink); }
  .btn-onink:hover{ background:var(--brand-soft); transform:translateY(-2px); }
  .btn-line{ background:transparent; border:1px solid rgba(255,255,255,.42); color:#fff; border-radius:var(--r-btn2); }
  .btn-line:hover{ background:rgba(255,255,255,.12); transform:translateY(-2px); }
  .link-more{
    display:inline-flex; align-items:center; gap:6px;
    font-size:14px; font-weight:600; color:var(--brand);
    transition:color .2s var(--ease);
  }
  .link-more:hover{ color:var(--brand-deep); }
  .link-more svg{ transition:transform .22s var(--ease); }
  .link-more:hover svg{ transform:translateX(4px); }

  /* ---------- badges ---------- */
  .badge{
    display:inline-flex; align-items:center; gap:6px;
    height:26px; padding:0 10px; border-radius:var(--r-badge);
    font-size:13px; font-weight:600; line-height:1;
  }
  .badge-brand{ background:var(--brand-soft); color:var(--brand-deep); }
  .badge-neutral{ background:#F1F5FA; color:var(--sub); }
  .badge-teal{ background:#E6F7F4; color:#0C7C6F; }
  .badge-accent{ background:#FFF1E6; color:#B4500B; }

  /* ---------- breadcrumb ---------- */
  .crumb-bar{ background:#fff; border-bottom:1px solid var(--line); }
  .crumb{
    min-height:44px; display:flex; align-items:center; gap:8px;
    font-size:13px; color:var(--mute); flex-wrap:wrap;
  }
  .crumb a{ color:var(--sub); transition:color .2s var(--ease); }
  .crumb a:hover{ color:var(--brand); }
  .crumb .crumb-sep{ display:inline-flex; color:#B9C6D8; }
  .crumb .crumb-now{ color:var(--txt); font-weight:600; max-width:52ch; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }

  /* ---------- article head ---------- */
  .article-head{ padding:36px 0 28px; }
  .article-title{
    margin:14px 0 16px;
    font-size:clamp(30px,4.6vw,52px);
    line-height:1.18; font-weight:800; color:var(--ink);
    letter-spacing:-.4px;
    max-width:900px;
  }
  .meta-row{ display:flex; align-items:center; flex-wrap:wrap; gap:10px; font-size:14px; color:var(--sub); }
  .meta-dot{ color:#C4CFDD; }
  .cover-box{ margin-top:26px; border-radius:var(--r-card); overflow:hidden; border:1px solid var(--line); background:#fff; box-shadow:var(--sh); }
  .cover-box img{ width:100%; aspect-ratio:16/9; object-fit:cover; }

  /* ---------- layout ---------- */
  .article-layout{ display:grid; grid-template-columns:minmax(0,1fr); gap:40px; padding:40px 0 8px; }
  @media (min-width:1280px){
    .article-layout{ grid-template-columns:minmax(0,760px) 300px; justify-content:center; gap:48px; }
  }

  /* ---------- prose ---------- */
  .prose{ font-size:16px; line-height:1.9; color:var(--txt); min-width:0; }
  .prose > *:first-child{ margin-top:0; }
  .prose p{ margin:0 0 1.1em; }
  .prose h2{
    position:relative; padding-left:16px;
    margin:2em 0 .7em;
    font-size:clamp(24px,2.6vw,34px);
    line-height:1.3; font-weight:700; color:var(--ink);
  }
  .prose h2::before{
    content:""; position:absolute; left:0; top:.2em; bottom:.2em;
    width:4px; border-radius:2px; background:var(--brand);
  }
  .prose h3{ margin:1.6em 0 .6em; font-size:20px; line-height:1.4; font-weight:600; color:var(--ink); }
  .prose h4{ margin:1.4em 0 .5em; font-size:17px; font-weight:600; color:var(--ink); }
  .prose ul,.prose ol{ margin:0 0 1.1em; padding-left:0; list-style:none; }
  .prose ol{ counter-reset:li; }
  .prose ul li,.prose ol li{ position:relative; padding-left:24px; margin:.5em 0; }
  .prose ul li::before{
    content:""; position:absolute; left:5px; top:.72em;
    width:7px; height:7px; border-radius:50%; background:var(--brand);
  }
  .prose ol li::before{
    counter-increment:li; content:counter(li)".";
    position:absolute; left:0; top:0; color:var(--brand); font-weight:700; font-size:15px;
  }
  .prose blockquote{
    margin:1.4em 0; padding:16px 20px;
    background:#F0F5FF; border-left:3px solid var(--brand);
    border-radius:0 12px 12px 0; color:var(--sub);
  }
  .prose blockquote p:last-child{ margin-bottom:0; }
  .prose img{ max-width:100%; height:auto; border-radius:var(--r-img); margin:1.6em auto; }
  .prose figure{ margin:1.6em 0; }
  .prose figcaption{ margin-top:8px; font-size:13px; color:var(--mute); text-align:center; }
  .prose a{ color:var(--brand); text-decoration:underline; text-underline-offset:3px; }
  .prose a:hover{ color:var(--brand-deep); }
  .prose table{ width:100%; border-collapse:collapse; font-size:15px; margin:1.4em 0; display:block; overflow-x:auto; }
  .prose th,.prose td{ border:1px solid var(--line); padding:10px 14px; text-align:left; white-space:nowrap; }
  .prose th{ background:#F4F8FF; font-weight:600; color:var(--ink); }
  .prose tbody tr:nth-child(even){ background:#F8FBFF; }
  .prose code{ background:var(--brand-soft); color:#12408F; padding:2px 6px; border-radius:4px; font-size:14px; }
  .prose pre{ margin:1.4em 0; padding:16px; background:var(--ink); color:#E6EDF7; border-radius:var(--r-img); overflow-x:auto; line-height:1.7; }
  .prose pre code{ background:transparent; color:inherit; padding:0; }
  .prose hr{ border:0; border-top:1px solid var(--line); margin:2em 0; }

  /* ---------- sidebar ---------- */
  .article-side{ display:flex; flex-direction:column; gap:20px; min-width:0; }
  .side-card{
    background:var(--card); border:1px solid var(--line); border-radius:var(--r-card);
    padding:20px; box-shadow:var(--sh);
  }
  .side-card.soft{ background:#F0F5FF; border-color:#D9E5FB; }
  .side-title{ margin:0 0 12px; font-size:15px; font-weight:700; color:var(--ink); }
  .side-text{ margin:0 0 14px; font-size:14px; line-height:1.8; color:var(--sub); }
  .side-list{ list-style:none; margin:0; padding:0; }
  .side-list li{ border-top:1px solid var(--line); }
  .side-list li:first-child{ border-top:0; }
  .side-list a{
    display:flex; align-items:center; justify-content:space-between; gap:10px;
    min-height:44px; padding:8px 2px; font-size:14px; color:var(--sub);
    transition:color .2s var(--ease), padding-left .2s var(--ease);
  }
  .side-list a:hover{ color:var(--brand); padding-left:6px; }
  .side-list a svg{ flex:none; color:#B9C6D8; }
  .fact{ display:flex; align-items:baseline; justify-content:space-between; gap:10px; padding:9px 0; border-top:1px dashed #D9E5FB; }
  .fact:first-of-type{ border-top:0; }
  .fact span{ font-size:14px; color:var(--sub); }
  .fact b{ font-size:20px; color:var(--brand); font-variant-numeric:tabular-nums; }

  /* ---------- tags ---------- */
  .tag-row{ display:flex; flex-wrap:wrap; gap:8px; margin:36px 0 0; padding-top:24px; border-top:1px solid var(--line); }
  .tag{
    display:inline-flex; align-items:center; height:30px; padding:0 14px;
    border-radius:999px; background:#fff; border:1px solid var(--line);
    font-size:13px; color:var(--sub);
    transition:border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
  }
  .tag:hover{ border-color:var(--brand); color:var(--brand); background:var(--brand-soft); }

  /* ---------- section ---------- */
  .section{ padding:56px 0; }
  @media (min-width:768px){ .section{ padding:80px 0; } }
  @media (min-width:1024px){ .section{ padding:96px 0; } }
  .section-head{ display:flex; align-items:flex-end; justify-content:space-between; gap:20px; flex-wrap:wrap; margin-bottom:32px; }
  .section-h{ margin:0; font-size:clamp(24px,2.6vw,34px); line-height:1.3; font-weight:700; color:var(--ink); }
  .section-sub{ margin:8px 0 0; font-size:14px; color:var(--sub); }

  .news-grid{ display:grid; grid-template-columns:1fr; gap:20px; }
  @media (min-width:768px){ .news-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); } }
  @media (min-width:1024px){ .news-grid{ grid-template-columns:repeat(3,minmax(0,1fr)); gap:24px; } }
  .news-card{
    display:flex; flex-direction:column; overflow:hidden;
    background:var(--card); border:1px solid var(--line); border-radius:var(--r-card);
    box-shadow:var(--sh); height:100%;
    transition:transform .24s var(--ease), box-shadow .24s var(--ease);
  }
  .news-card:hover{ transform:translateY(-3px); box-shadow:var(--sh-hover); }
  .news-thumb{ overflow:hidden; }
  .news-thumb img{ width:100%; aspect-ratio:16/10; object-fit:cover; border-radius:0; transition:transform .3s var(--ease); }
  .news-card:hover .news-thumb img{ transform:scale(1.04); }
  .news-body{ padding:18px 20px 20px; display:flex; flex-direction:column; gap:10px; flex:1; }
  .news-title{ margin:0; font-size:17px; line-height:1.45; font-weight:600; color:var(--ink); }
  .news-card:hover .news-title{ color:var(--brand-deep); }
  .news-desc{ margin:0; font-size:14px; line-height:1.7; color:var(--sub); }
  .news-foot{ margin-top:auto; display:flex; align-items:center; justify-content:space-between; gap:10px; font-size:13px; color:var(--mute); }

  .pn-grid{ display:grid; grid-template-columns:1fr; gap:16px; }
  @media (min-width:768px){ .pn-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); } }
  .pn-card{
    display:flex; align-items:center; gap:14px;
    padding:18px 20px; background:#fff; border:1px solid var(--line); border-radius:var(--r-card);
    box-shadow:var(--sh); min-height:88px;
    transition:transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
  }
  .pn-card:hover{ transform:translateY(-3px); box-shadow:var(--sh-hover); border-color:#CFDDF2; }
  .pn-card span{ font-size:15px; font-weight:600; color:var(--ink); line-height:1.5; }
  .pn-card small{ display:block; font-size:13px; font-weight:400; color:var(--mute); }
  .pn-ico{ width:38px; height:38px; border-radius:11px; background:var(--brand-soft); color:var(--brand); display:grid; place-items:center; flex:none; }
  .pn-card.next .pn-ico{ margin-left:auto; }

  /* ---------- search band ---------- */
  .search-band{ background:#fff; border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
  .search-inner{ display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap; padding-top:28px; padding-bottom:28px; }
  .search-h{ margin:0; font-size:20px; font-weight:700; color:var(--ink); }
  .search-p{ margin:6px 0 0; font-size:14px; color:var(--sub); }
  .search-form{ display:flex; gap:10px; flex-wrap:wrap; }
  .search-form input{
    height:44px; min-width:260px; padding:0 14px;
    border:1px solid var(--line); border-radius:var(--r-input);
    background:#fff; color:var(--txt); font-size:15px;
    transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
  }
  .search-form input::placeholder{ color:var(--mute); }
  .search-form input:focus{ outline:none; border-color:var(--brand); box-shadow:0 0 0 3px rgba(26,92,216,.14); }

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative; overflow:hidden;
    background:var(--ink); color:#fff;
  }
  .cta-band::before{
    content:""; position:absolute; inset:0;
    background-image:repeating-linear-gradient(45deg, rgba(255,255,255,.06) 0 1px, transparent 1px 12px);
    pointer-events:none;
  }
  .cta-band::after{
    content:""; position:absolute; right:-120px; top:-140px;
    width:420px; height:420px; border-radius:50%;
    background:radial-gradient(circle, rgba(255,122,26,.45) 0%, rgba(255,122,26,0) 68%);
    pointer-events:none;
  }
  .cta-inner{ position:relative; display:flex; align-items:center; justify-content:space-between; gap:28px; flex-wrap:wrap; padding:48px 0; }
  .cta-title{ margin:0; font-size:clamp(22px,2.4vw,30px); line-height:1.35; font-weight:700; }
  .cta-text{ margin:10px 0 0; font-size:15px; color:#B9C9E0; max-width:520px; }
  .cta-actions{ display:flex; gap:12px; flex-wrap:wrap; }

  /* ---------- empty state ---------- */
  .empty-state{
    max-width:420px; margin:0 auto; padding:48px 24px; text-align:center;
    background:#fff; border:1px solid var(--line); border-radius:var(--r-card); box-shadow:var(--sh);
  }
  .empty-ico{ width:56px; height:56px; margin:0 auto 16px; border-radius:16px; background:var(--brand-soft); color:var(--brand); display:grid; place-items:center; }
  .empty-state h2{ margin:0 0 8px; font-size:16px; font-weight:700; color:var(--ink); }
  .empty-state p{ margin:0 0 20px; font-size:14px; color:var(--sub); }

  /* ---------- footer ---------- */
  .site-footer{ position:relative; background:var(--ink); color:#C7D3E4; padding:64px 0 0; margin-top:0; }
  .footer-grid{ display:grid; grid-template-columns:1fr; gap:32px; padding-bottom:40px; }
  @media (min-width:768px){ .footer-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); } }
  @media (min-width:1024px){ .footer-grid{ grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:40px; } }
  .footer-brand{ display:flex; align-items:center; gap:10px; margin-bottom:14px; }
  .footer-brand .brand-mark{ background:rgba(255,255,255,.1); }
  .footer-brand b{ display:block; font-size:17px; font-weight:800; color:#fff; line-height:1.3; }
  .footer-brand small{ display:block; font-size:12px; color:#8FA5C2; }
  .footer-note{ margin:0; font-size:14px; line-height:1.8; color:#9FB2CB; max-width:340px; }
  .footer-title{ margin:0 0 14px; font-size:15px; font-weight:700; color:#fff; }
  .footer-link{
    display:inline-block; font-size:14px; color:#B9C9E0; padding:5px 0;
    transition:color .2s var(--ease), transform .2s var(--ease);
  }
  .footer-link:hover{ color:#fff; transform:translateX(2px); }
  .footer-disclaimer{ margin:0; font-size:13px; line-height:1.8; color:#8FA5C2; }
  .footer-bottom{
    display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
    border-top:1px solid rgba(255,255,255,.12); padding:20px 0 28px;
    font-size:13px; color:#8FA5C2;
  }
  .to-top{
    position:fixed; right:20px; bottom:24px; z-index:60;
    width:46px; height:46px; border-radius:50%;
    background:var(--brand); color:#fff; display:grid; place-items:center;
    box-shadow:0 10px 24px -10px rgba(26,92,216,.7);
    transition:transform .22s var(--ease), filter .22s var(--ease);
  }
  .to-top:hover{ transform:translateY(-3px); filter:brightness(1.08); }
  @media (max-width:520px){ .to-top{ right:14px; bottom:16px; } }

  /* ---------- responsive nav ---------- */
  @media (max-width:1023px){
    .header-inner{ flex-wrap:wrap; padding:12px 0; min-height:0; gap:12px; }
    .main-nav{
      order:3; width:100%; margin-left:0; flex-wrap:wrap; gap:0;
      border-top:1px solid var(--line); padding-top:6px;
    }
    .nav-link{ height:44px; padding:0 12px; font-size:15px; }
    .nav-link::after{ bottom:6px; }
    .mega-panel{ display:none; }
    .nav-caret{ display:none; }
    .header-tools{ margin-left:auto; }
  }
  @media (max-width:520px){
    .brand-text small{ display:none; }
    .search-form input{ min-width:0; width:100%; }
    .search-form{ width:100%; }
    .search-form .btn{ width:100%; }
    .article-title{ font-size:28px; }
  }

/* roulang page: category1 */
:root{
    --brand:#1A5CD8; --brand-dark:#1449AF; --brand-soft:#EAF1FF;
    --accent:#FF7A1A; --accent-dark:#E4620A;
    --teal:#12A594; --teal-soft:#E6F6F4;
    --ink:#0A1F3D; --bg:#F5F8FC; --card:#FFFFFF; --line:#E3EAF3;
    --text:#1B2733; --muted:#5B6B80; --weak:#8A99AC;
    --r-card:16px; --r-img:12px; --r-input:10px;
    --shadow-sm:0 1px 2px rgba(16,42,76,.04), 0 8px 24px -12px rgba(16,42,76,.14);
    --shadow-lg:0 2px 4px rgba(16,42,76,.06), 0 18px 40px -16px rgba(16,42,76,.22);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;background:var(--bg);color:var(--text);
    font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;line-height:1.9;-webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border-style:none}
  a{color:inherit;text-decoration:none}
  button,input{font:inherit;color:inherit}
  h1,h2,h3,h4,p,figure{margin:0}
  ul{margin:0;padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
  .num{font-variant-numeric:tabular-nums;font-weight:600}

  .wrap{max-width:1240px;margin:0 auto;padding-left:16px;padding-right:16px}
  @media (min-width:768px){.wrap{padding-left:24px;padding-right:24px}}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 4px 16px -8px rgba(16,42,76,.12);
  }
  .header-inner{
    display:flex;align-items:center;gap:14px;flex-wrap:wrap;
    padding-top:10px;padding-bottom:10px;
  }
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
  .brand-mark{
    width:38px;height:38px;border-radius:11px;flex:0 0 auto;
    background:linear-gradient(135deg,var(--brand),#2E7BF0);
    color:#fff;display:grid;place-items:center;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.2}
  .brand-text b{font-size:17px;font-weight:800;letter-spacing:.4px;color:var(--ink)}
  .brand-text small{font-size:13px;color:var(--weak);letter-spacing:.2px}

  .main-nav{
    display:flex;align-items:center;gap:4px;flex:1 1 100%;order:3;
    overflow-x:auto;scrollbar-width:thin;padding-bottom:2px;
  }
  .main-nav::-webkit-scrollbar{height:4px}
  .main-nav::-webkit-scrollbar-thumb{background:#CFDBEA;border-radius:4px}
  .main-nav::-webkit-scrollbar-thumb:hover{background:var(--brand)}
  @media (min-width:1024px){
    .main-nav{order:0;flex:1 1 auto;overflow:visible;padding-bottom:0;gap:2px}
  }
  .nav-link{
    position:relative;display:inline-flex;align-items:center;gap:6px;
    min-height:44px;padding:0 12px;font-size:15px;font-weight:600;
    color:var(--muted);white-space:nowrap;border-radius:10px;
    transition:color 220ms var(--ease),background-color 220ms var(--ease);
  }
  .nav-link::after{
    content:"";position:absolute;left:50%;right:50%;bottom:8px;height:2px;
    background:var(--brand);border-radius:2px;
    transition:left 220ms var(--ease),right 220ms var(--ease);
  }
  .nav-link:hover,.nav-link:focus-visible{color:var(--brand)}
  .nav-link:hover::after,.nav-link:focus-visible::after{left:12px;right:12px}
  .nav-link.is-active{color:var(--brand)}
  .nav-link.is-active::after{left:12px;right:12px}
  .nav-item{position:relative}
  .nav-caret{display:inline-flex;align-items:center;transition:transform 240ms var(--ease)}
  .nav-item:hover .nav-caret,.nav-item:focus-within .nav-caret{transform:rotate(180deg)}

  .mega-panel{
    position:absolute;top:calc(100% + 4px);left:50%;
    transform:translate(-50%,10px);
    width:720px;max-width:90vw;padding:24px;
    background:#fff;border:1px solid var(--line);border-radius:16px;
    box-shadow:var(--shadow-lg);
    display:grid;grid-template-columns:1.05fr 1fr 210px;gap:22px;
    opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity 220ms var(--ease),transform 220ms var(--ease),visibility 220ms;
  }
  .nav-item:hover .mega-panel,.nav-item:focus-within .mega-panel{
    opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0);
  }
  @media (max-width:1023px){.mega-panel{display:none}}
  .mega-title{font-size:13px;font-weight:700;color:var(--weak);letter-spacing:.6px;margin-bottom:10px}
  .mega-cat{display:flex;gap:10px;align-items:flex-start;padding:9px 10px;border-radius:12px;transition:background-color 200ms var(--ease)}
  .mega-cat:hover{background:var(--brand-soft)}
  .mega-cat-ico{
    flex:0 0 auto;width:28px;height:28px;border-radius:8px;
    background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;
  }
  .mega-cat > span > b{display:block;font-size:14px;font-weight:600;color:var(--text);line-height:1.5}
  .mega-cat > span > span{display:block;font-size:13px;color:var(--muted);line-height:1.5}
  .mega-list a{
    display:flex;align-items:baseline;justify-content:space-between;gap:12px;
    padding:10px 0;border-bottom:1px dashed var(--line);font-size:14px;color:var(--muted);
    transition:color 200ms var(--ease);
  }
  .mega-list a:hover{color:var(--brand)}
  .mega-list time{flex:0 0 auto;font-size:13px;color:var(--weak);font-variant-numeric:tabular-nums}
  .mega-entry{display:block;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--bg);transition:box-shadow 220ms var(--ease),transform 220ms var(--ease)}
  .mega-entry:hover{box-shadow:var(--shadow-sm);transform:translateY(-2px)}
  .mega-entry img{width:100%;aspect-ratio:16/10;object-fit:cover}
  .mega-entry span{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 12px;font-size:13px;font-weight:600;color:var(--text)}
  .mega-entry:hover span svg{transform:translateX(4px)}
  .mega-entry span svg{transition:transform 220ms var(--ease)}

  .header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
  .icon-btn{
    width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;
    color:var(--muted);display:grid;place-items:center;
    transition:color 200ms var(--ease),background-color 200ms var(--ease),border-color 200ms var(--ease);
  }
  .icon-btn:hover{color:var(--brand);background:var(--brand-soft);border-color:#C9DBF7}

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 22px;font-size:15px;font-weight:600;
    border:1px solid transparent;border-radius:12px;cursor:pointer;
    transition:transform 200ms var(--ease),background-color 200ms var(--ease),
               color 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
  }
  .btn-pill{border-radius:999px}
  .btn-sm{min-height:38px;padding:0 16px;font-size:14px}
  .btn-primary{background:var(--accent);color:#fff}
  .btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 12px 26px -14px rgba(255,122,26,.8)}
  .btn-outline{background:#fff;border-color:var(--brand);color:var(--brand)}
  .btn-outline:hover{background:var(--brand-soft);transform:translateY(-1px)}
  .btn-ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
  .btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-1px)}
  .link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
  .link-more svg{transition:transform 220ms var(--ease)}
  .link-more:hover svg{transform:translateX(4px)}

  /* ---------- Badges ---------- */
  .badge{
    display:inline-flex;align-items:center;height:26px;padding:0 10px;
    border-radius:6px;font-size:13px;font-weight:600;line-height:1;white-space:nowrap;
  }
  .badge-brand{background:var(--brand-soft);color:var(--brand-dark)}
  .badge-neutral{background:#F0F3F8;color:var(--muted)}
  .badge-teal{background:var(--teal-soft);color:#0B7C70}

  /* ---------- Page head ---------- */
  .page-head{position:relative;overflow:hidden;background:#F5F8FC;border-bottom:1px solid var(--line)}
  .page-head::before{
    content:"";position:absolute;inset:0;opacity:.09;
    background-image:url("/assets/images/backpic/back-2.webp");
    background-size:cover;background-position:center right;
  }
  .page-head::after{
    content:"";position:absolute;inset:0;
    background-image:linear-gradient(rgba(26,92,216,.07) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(26,92,216,.07) 1px,transparent 1px);
    background-size:34px 34px;
  }
  .page-head-inner{position:relative;z-index:1;display:grid;gap:22px;padding-top:36px;padding-bottom:32px}
  @media (min-width:1024px){
    .page-head-inner{grid-template-columns:1.4fr .9fr;align-items:end;gap:48px;padding-top:64px;padding-bottom:52px}
  }
  .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:14px;flex-wrap:wrap}
  .crumb a{color:var(--muted);transition:color 200ms var(--ease)}
  .crumb a:hover{color:var(--brand)}
  .crumb svg{color:var(--weak)}
  .crumb .current{color:var(--text);font-weight:600}
  .page-head h1{font-size:clamp(30px,4.6vw,52px);line-height:1.18;font-weight:800;letter-spacing:-.5px;color:var(--ink)}
  .page-head h1 em{font-style:normal;color:var(--brand)}
  .page-head-sub{font-size:15px;color:var(--muted);margin-top:14px;max-width:560px}
  .head-side{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    padding:20px;box-shadow:var(--shadow-sm);
  }
  .head-side p{font-size:14px;color:var(--muted);line-height:1.8}
  .head-meta{display:flex;gap:20px;margin-top:14px;padding-top:14px;border-top:1px solid var(--line);flex-wrap:wrap}
  .head-meta div b{display:block;font-size:22px;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums}
  .head-meta div span{font-size:13px;color:var(--weak)}

  /* ---------- Sections ---------- */
  .section{padding-top:56px;padding-bottom:56px}
  @media (min-width:768px){.section{padding-top:80px;padding-bottom:80px}}
  @media (min-width:1024px){.section{padding-top:96px;padding-bottom:96px}}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:32px}
  .section-title{font-size:clamp(24px,2.6vw,34px);line-height:1.3;font-weight:700;color:var(--ink)}
  .section-desc{font-size:14px;color:var(--muted);margin-top:8px;max-width:640px}

  /* ---------- Stats bar ---------- */
  .stat-bar{
    display:grid;grid-template-columns:repeat(2,1fr);gap:1px;
    background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  }
  @media (min-width:768px){.stat-bar{grid-template-columns:repeat(4,1fr)}}
  .stat{background:#fff;padding:22px 20px}
  .stat b{display:block;font-size:28px;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1.2}
  .stat b i{font-style:normal;font-size:15px;font-weight:600;color:var(--weak);margin-left:3px}
  .stat span{display:block;font-size:13px;color:var(--muted);margin-top:6px}
  .stat em{display:inline-block;font-style:normal;font-size:13px;color:#0B7C70;background:var(--teal-soft);border-radius:6px;padding:1px 8px;margin-top:10px}

  /* ---------- Intro ---------- */
  .intro-grid{display:grid;gap:32px}
  @media (min-width:1024px){.intro-grid{grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}}
  .prose p{font-size:16px;line-height:1.9;color:var(--muted);max-width:760px}
  .prose p + p{margin-top:1.1em}
  .prose strong{color:var(--text);font-weight:600}
  .point-grid{display:grid;gap:14px;margin-top:28px}
  @media (min-width:640px){.point-grid{grid-template-columns:1fr 1fr}}
  .point{
    display:flex;gap:12px;padding:16px;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-card);box-shadow:var(--shadow-sm);
    transition:box-shadow 220ms var(--ease),transform 220ms var(--ease);
  }
  .point:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
  .point-ico{flex:0 0 auto;width:36px;height:36px;border-radius:10px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center}
  .point b{display:block;font-size:15px;font-weight:600;color:var(--ink);line-height:1.5}
  .point span{display:block;font-size:13px;color:var(--muted);line-height:1.7}
  .figure{
    border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
    background:#fff;box-shadow:var(--shadow-sm);
  }
  .figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 260ms var(--ease)}
  .figure:hover img{transform:scale(1.04)}
  .figure figcaption{padding:14px 18px;font-size:13px;color:var(--muted);border-top:1px solid var(--line)}

  /* ---------- List flow ---------- */
  .list-flow{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .list-row{
    display:grid;grid-template-columns:88px 1fr 28px;gap:14px;align-items:center;
    padding:16px 12px;border-bottom:1px solid var(--line);background:#fff;
    transition:background-color 200ms var(--ease),box-shadow 200ms var(--ease);
  }
  .list-row:last-child{border-bottom:none}
  @media (min-width:768px){
    .list-row{grid-template-columns:46px 120px 1fr 28px;gap:22px;padding:18px 20px}
  }
  .list-row:hover{background:#F0F5FF}
  .row-index{display:none;font-size:15px;color:var(--weak);font-variant-numeric:tabular-nums;font-weight:600}
  @media (min-width:768px){.row-index{display:block}}
  .row-thumb{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line)}
  .row-body{min-width:0}
  .row-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
  .row-title{font-size:17px;font-weight:600;line-height:1.45;color:var(--ink);transition:color 200ms var(--ease)}
  .list-row:hover .row-title{color:var(--brand)}
  .row-desc{
    font-size:14px;color:var(--muted);line-height:1.7;margin-top:6px;
    display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
  }
  @media (min-width:768px){.row-desc{-webkit-line-clamp:1}}
  .row-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--weak);margin-top:8px}
  .row-meta .dot{width:4px;height:4px;border-radius:50%;background:#C7D4E6}
  .row-meta time{font-variant-numeric:tabular-nums;font-weight:600;color:var(--muted)}
  .row-arrow{color:var(--weak);display:inline-flex;transition:transform 220ms var(--ease),color 200ms var(--ease)}
  .list-row:hover .row-arrow{transform:translateX(4px);color:var(--brand)}

  /* ---------- Steps ---------- */
  .steps{
    display:grid;gap:1px;background:var(--line);
    border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  }
  @media (min-width:768px){.steps{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}
  .step{background:#fff;padding:24px 22px}
  .step b{
    display:inline-flex;align-items:center;justify-content:center;
    width:34px;height:34px;border-radius:10px;background:var(--teal-soft);
    color:#0B7C70;font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;margin-bottom:14px;
  }
  .step h3{font-size:17px;font-weight:600;color:var(--ink);line-height:1.45}
  .step p{font-size:14px;color:var(--muted);line-height:1.8;margin-top:8px}

  /* ---------- FAQ ---------- */
  .faq{border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:64px;padding:18px 4px;cursor:pointer;list-style:none;
    font-size:17px;font-weight:600;color:var(--ink);
    transition:color 200ms var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--brand)}
  .faq-ico{flex:0 0 auto;color:var(--brand)}
  .faq-ico .vert{transition:opacity 220ms var(--ease)}
  .faq-item[open] .faq-ico .vert{opacity:0}
  .faq-answer{padding:0 4px 22px;font-size:15px;line-height:1.9;color:var(--muted);max-width:800px;animation:fadeUp 240ms var(--ease) both}
  @keyframes fadeUp{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

  /* ---------- Category cards ---------- */
  .cat-grid{display:grid;gap:20px}
  @media (min-width:768px){.cat-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.cat-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
  .cat-card{
    display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-card);box-shadow:var(--shadow-sm);overflow:hidden;
    transition:box-shadow 220ms var(--ease),transform 220ms var(--ease);
  }
  .cat-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
  .cat-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 260ms var(--ease)}
  .cat-card:hover img{transform:scale(1.04)}
  .cat-card .cat-body{padding:18px 20px 22px}
  .cat-card h3{font-size:17px;font-weight:600;color:var(--ink);line-height:1.45}
  .cat-card p{font-size:14px;color:var(--muted);line-height:1.8;margin-top:8px}
  .cat-card .link-more{margin-top:12px}

  /* ---------- CTA band ---------- */
  .cta-band{position:relative;background:var(--ink);color:#fff;overflow:hidden}
  .cta-band::before{
    content:"";position:absolute;inset:0;
    background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.06) 0 1px,transparent 1px 14px);
  }
  .cta-band::after{
    content:"";position:absolute;right:-140px;top:-120px;width:440px;height:440px;border-radius:50%;
    background:radial-gradient(circle,rgba(255,122,26,.42),rgba(255,122,26,0) 66%);
  }
  .cta-inner{position:relative;z-index:1;display:grid;gap:26px;padding-top:56px;padding-bottom:56px}
  @media (min-width:1024px){
    .cta-inner{grid-template-columns:1.25fr .75fr;align-items:center;padding-top:72px;padding-bottom:72px}
  }
  .cta-inner h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;font-weight:700}
  .cta-inner p{font-size:15px;color:#B9C8DD;margin-top:12px;max-width:560px}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap}
  @media (min-width:1024px){.cta-actions{justify-content:flex-end}}

  /* ---------- Footer ---------- */
  .site-footer{background:var(--ink);color:#C7D4E6;padding-top:56px}
  .footer-grid{display:grid;gap:32px}
  @media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px}}
  .footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
  .footer-brand .brand-mark{width:42px;height:42px;border-radius:12px;background:rgba(255,255,255,.08);color:#fff;display:grid;place-items:center}
  .footer-brand b{display:block;font-size:16px;color:#fff;line-height:1.3}
  .footer-brand small{display:block;font-size:13px;color:#8A99AC}
  .footer-note{font-size:14px;line-height:1.85;color:#9FB0C6;max-width:360px}
  .footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px}
  .footer-link{display:inline-block;font-size:14px;color:#A9B9CE;padding:5px 0;transition:color 200ms var(--ease),transform 200ms var(--ease)}
  .footer-link:hover{color:#fff;transform:translateX(2px)}
  .footer-disclaimer{font-size:13px;line-height:1.85;color:#8A99AC}
  .footer-bottom{
    margin-top:40px;border-top:1px solid rgba(255,255,255,.1);
    padding:20px 0 30px;display:flex;flex-wrap:wrap;gap:12px 24px;
    justify-content:space-between;align-items:center;font-size:13px;color:#8A99AC;
  }
  .to-top{
    position:fixed;right:20px;bottom:24px;z-index:40;
    width:48px;height:48px;border-radius:50%;background:var(--brand);color:#fff;
    display:grid;place-items:center;box-shadow:var(--shadow-lg);
    transition:background-color 200ms var(--ease),transform 200ms var(--ease);
  }
  .to-top:hover{background:var(--brand-dark);transform:translateY(-3px)}
  @media (max-width:520px){
    .to-top{right:14px;bottom:16px;width:44px;height:44px}
    .brand-text small{display:none}
  }

/* roulang page: category2 */
:root{
    --brand:#1A5CD8;
    --brand-dark:#1449AF;
    --brand-light:#EAF1FF;
    --accent:#FF7A1A;
    --teal:#12A594;
    --ink:#0A1F3D;
    --bg:#F5F8FC;
    --card:#FFFFFF;
    --line:#E3EAF3;
    --text:#1B2733;
    --muted:#5B6B80;
    --faint:#8A99AC;
    --r-card:16px;
    --r-img:12px;
    --r-input:10px;
    --sh:0 1px 2px rgba(16,42,76,.04), 0 8px 24px -12px rgba(16,42,76,.14);
    --sh-hover:0 2px 4px rgba(16,42,76,.06), 0 18px 40px -16px rgba(16,42,76,.22);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.9;
    color:var(--text);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:var(--brand);text-decoration:none;transition:color .22s var(--ease)}
  a:hover{color:var(--brand-dark)}
  button,input{font:inherit;color:inherit}
  p{margin:0 0 1.1em}
  h1,h2,h3,h4{margin:0}
  ul,ol{margin:0;padding:0}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

  .wrap{max-width:1240px;margin:0 auto;padding:0 16px}
  @media (min-width:768px){ .wrap{padding:0 24px} }

  /* ============ 头部导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 4px 16px -8px rgba(16,42,76,.12);
  }
  .header-inner{display:flex;align-items:center;gap:16px;min-height:72px;position:relative}
  .brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex:none}
  .brand:hover{color:var(--brand)}
  .brand-mark{
    width:40px;height:40px;border-radius:12px;flex:none;
    background:linear-gradient(135deg,var(--brand),#0E3E9B);color:#fff;
    display:grid;place-items:center;
  }
  .brand-text b{display:block;font-size:17px;font-weight:700;line-height:1.2;letter-spacing:.2px}
  .brand-text small{display:block;font-size:13px;color:var(--muted);line-height:1.5;font-weight:400}

  .nav-toggle{position:absolute;width:0;height:0;opacity:0;pointer-events:none}
  .nav-burger{
    display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
    color:var(--muted);background:#fff;place-items:center;cursor:pointer;flex:none;
    transition:color .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
  }
  .nav-burger:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-light)}

  .main-nav{display:flex;align-items:center;gap:2px;flex:1;justify-content:center}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;gap:6px;
    height:44px;padding:0 14px;font-size:15px;font-weight:500;color:var(--text);
    border-radius:10px;white-space:nowrap;
    transition:color .22s var(--ease),background .22s var(--ease);
  }
  .nav-link::after{
    content:"";position:absolute;left:50%;right:50%;bottom:4px;height:2px;
    background:var(--brand);border-radius:2px;
    transition:left .24s var(--ease),right .24s var(--ease);
  }
  .nav-link:hover,.nav-link:focus-visible{color:var(--brand);background:var(--brand-light)}
  .nav-link:hover::after,.nav-link:focus-visible::after{left:14px;right:14px}
  .nav-link.is-active{color:var(--brand);font-weight:600}
  .nav-link.is-active::after{left:14px;right:14px}
  .nav-item{position:relative}
  .nav-caret{display:inline-flex;color:var(--faint);transition:transform .24s var(--ease),color .24s var(--ease)}
  .nav-item:hover .nav-caret,.nav-item:focus-within .nav-caret{transform:rotate(180deg);color:var(--brand)}

  .mega-panel{
    position:absolute;top:calc(100% + 10px);left:50%;
    transform:translateX(-50%) translateY(8px);
    width:700px;display:grid;grid-template-columns:1.1fr 1fr 200px;gap:20px;
    padding:24px;background:#fff;border:1px solid var(--line);border-radius:16px;
    box-shadow:var(--sh-hover);
    opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
  }
  .nav-item:hover .mega-panel,.nav-item:focus-within .mega-panel{
    opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0);
  }
  .mega-title{font-size:13px;font-weight:600;color:var(--faint);letter-spacing:.06em;margin:0 0 10px}
  .mega-cat{display:flex;gap:10px;align-items:flex-start;padding:9px 10px;border-radius:12px;color:var(--text)}
  .mega-cat:hover{background:#F0F5FF;color:var(--text)}
  .mega-cat-ico{
    width:28px;height:28px;border-radius:8px;background:var(--brand-light);color:var(--brand);
    display:grid;place-items:center;flex:none;margin-top:2px;
  }
  .mega-cat b{display:block;font-size:14px;font-weight:600;line-height:1.5}
  .mega-cat > span > span{display:block;font-size:13px;color:var(--muted);line-height:1.5}
  .mega-post{display:block;padding:10px;border-radius:12px;color:var(--text)}
  .mega-post:hover{background:#F0F5FF;color:var(--text)}
  .mega-post span{display:block;font-size:14px;font-weight:500;line-height:1.6}
  .mega-post time{display:block;font-size:13px;color:var(--faint);font-variant-numeric:tabular-nums}
  .mega-entry{
    display:block;border:1px solid var(--line);border-radius:12px;overflow:hidden;
    color:var(--text);background:#fff;box-shadow:var(--sh);
    transition:transform .24s var(--ease),box-shadow .24s var(--ease);
  }
  .mega-entry:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);color:var(--text)}
  .mega-entry img{width:100%;aspect-ratio:16/10;object-fit:cover}
  .mega-entry-body{display:block;padding:12px}
  .mega-entry-body b{display:block;font-size:14px;font-weight:600;line-height:1.5}
  .mega-entry-body span{display:block;font-size:13px;color:var(--muted);line-height:1.5}

  .header-actions{display:flex;align-items:center;gap:12px;flex:none}
  .icon-btn{
    width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;
    color:var(--muted);display:grid;place-items:center;
    transition:color .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
  }
  .icon-btn:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-light)}

  /* ============ 按钮 / 徽章 / 链接 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:600;line-height:1;
    border:1px solid transparent;cursor:pointer;
    transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),filter .22s var(--ease);
  }
  .btn-accent{background:var(--accent);color:#fff;filter:brightness(1)}
  .btn-accent:hover{color:#fff;filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 12px 26px -14px rgba(255,122,26,.85)}
  .btn-ghost{background:#fff;border-color:var(--brand);color:var(--brand)}
  .btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);border-color:var(--brand-dark)}
  .btn-outline-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
  .btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
  .header-cta{height:44px;padding:0 20px;background:var(--accent);color:#fff}
  .header-cta:hover{color:#fff;filter:brightness(1.08);transform:translateY(-1px)}

  .badge{
    display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:6px;
    font-size:13px;font-weight:500;line-height:1;white-space:nowrap;
  }
  .badge-brand{background:var(--brand-light);color:var(--brand-dark)}
  .badge-neutral{background:#EEF2F7;color:var(--muted)}
  .badge-teal{background:#E4F6F3;color:#0B7A6D}

  .link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand)}
  .link-more svg{transition:transform .22s var(--ease)}
  .link-more:hover svg{transform:translateX(4px)}

  /* ============ 板块通用 ============ */
  .section{padding:56px 0}
  @media (min-width:768px){ .section{padding:80px 0} }
  @media (min-width:1024px){ .section{padding:96px 0} }
  .section-alt{background:#EDF3FB}
  .sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
  .h1{font-size:clamp(30px,4.6vw,52px);line-height:1.18;font-weight:800;color:var(--ink);margin:14px 0 0}
  .h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;font-weight:700;color:var(--ink)}
  .h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--ink);margin:0 0 10px}
  .sec-desc{font-size:15px;color:var(--muted);margin:10px 0 0;line-height:1.7}

  /* ============ 页头 ============ */
  .page-head{
    position:relative;overflow:hidden;background:#F5F8FC;border-bottom:1px solid var(--line);
  }
  .page-head::before{
    content:"";position:absolute;inset:0;
    background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    opacity:.10;
  }
  .page-head::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:
      linear-gradient(rgba(26,92,216,.06) 1px,transparent 1px),
      linear-gradient(90deg,rgba(26,92,216,.06) 1px,transparent 1px);
    background-size:48px 48px;
  }
  .page-head .wrap{position:relative;z-index:1;padding-top:26px;padding-bottom:40px}
  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
  .crumb a{color:var(--muted)}
  .crumb a:hover{color:var(--brand)}
  .crumb .crumb-sep{color:var(--faint);display:inline-flex}
  .crumb [aria-current="page"]{color:var(--text);font-weight:600}
  .page-head-grid{display:grid;gap:28px;align-items:center;margin-top:16px}
  @media (min-width:1024px){ .page-head-grid{grid-template-columns:minmax(0,1fr) 380px;gap:56px} }
  .page-head-lead{font-size:16px;color:var(--muted);margin:16px 0 0;max-width:560px;line-height:1.9}
  .page-head-fig img{
    width:100%;aspect-ratio:16/10;object-fit:cover;
    border-radius:16px;border:1px solid var(--line);box-shadow:var(--sh);
  }
  .page-head-fig figcaption{font-size:13px;color:var(--faint);text-align:center;margin-top:10px}

  /* ============ 图文分栏 ============ */
  .split{display:grid;gap:32px;align-items:center}
  @media (min-width:1024px){ .split{grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:56px} }
  .split-text p{max-width:760px}
  .split-fig img,.alt-fig img{
    width:100%;aspect-ratio:16/10;object-fit:cover;
    border-radius:12px;border:1px solid var(--line);box-shadow:var(--sh);
  }
  .split-fig figcaption,.alt-fig figcaption{font-size:13px;color:var(--faint);text-align:center;margin-top:10px}
  .points{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:12px}
  .points li{position:relative;padding-left:28px;font-size:15px;line-height:1.8;color:var(--text)}
  .points li::before{
    content:"";position:absolute;left:4px;top:11px;width:8px;height:8px;border-radius:50%;
    background:var(--brand);
  }

  .alt-row{display:grid;gap:28px;align-items:center;padding:34px 0;border-top:1px solid var(--line)}
  .alt-row:first-of-type{border-top:0;padding-top:6px}
  @media (min-width:1024px){
    .alt-row{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;padding:44px 0}
    .alt-row.is-rev .alt-fig{order:2}
  }
  .alt-row p{max-width:720px}
  .alt-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}

  /* ============ 时间轴 ============ */
  .timeline{position:relative;list-style:none;margin:0;padding:0;max-width:860px}
  .timeline::before{
    content:"";position:absolute;left:13px;top:14px;bottom:14px;width:2px;
    background:linear-gradient(180deg,var(--brand),#C9DCF8);
  }
  .tl-item{position:relative;padding:0 0 26px 52px}
  .tl-item:last-child{padding-bottom:0}
  .tl-dot{
    position:absolute;left:0;top:2px;width:28px;height:28px;border-radius:50%;
    background:#fff;border:2px solid var(--brand);color:var(--brand);
    display:grid;place-items:center;font-size:12px;font-weight:700;
    font-variant-numeric:tabular-nums;
  }
  .tl-card{
    background:#fff;border:1px solid var(--line);border-radius:12px;
    padding:16px 20px;box-shadow:var(--sh);
    transition:transform .24s var(--ease),box-shadow .24s var(--ease);
  }
  .tl-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
  .tl-time{display:inline-block;font-size:13px;color:var(--teal);font-weight:600;font-variant-numeric:tabular-nums;margin-bottom:4px}
  .tl-card b{display:block;font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;margin-bottom:4px}
  .tl-card p{margin:0;font-size:15px;color:var(--muted);line-height:1.8}

  /* ============ 深色数据波段 ============ */
  .band{position:relative;background:var(--ink);color:#fff;overflow:hidden;padding:64px 0}
  @media (min-width:768px){ .band{padding:84px 0} }
  .band::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.06) 0 1px,transparent 1px 16px);
  }
  .band::after{
    content:"";position:absolute;right:-140px;top:-120px;width:440px;height:440px;border-radius:50%;
    background:radial-gradient(circle,rgba(255,122,26,.32),transparent 70%);pointer-events:none;
  }
  .band-inner{position:relative;z-index:1;display:grid;gap:36px;align-items:center}
  @media (min-width:1024px){ .band-inner{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:64px} }
  .band .h2{color:#fff}
  .band p{color:#B9CBE4;font-size:16px;max-width:640px}
  .stats{display:grid;grid-template-columns:repeat(2,1fr);gap:26px 24px;list-style:none;margin:0;padding:0}
  .stats li{border-left:1px solid rgba(18,165,148,.55);padding-left:16px}
  .stats b{display:block;font-size:28px;font-weight:700;color:#fff;line-height:1.2;font-variant-numeric:tabular-nums}
  .stats span{display:block;font-size:14px;color:#9DB1CC;margin-top:6px;line-height:1.6}

  /* ============ 速查列表 ============ */
  .search-block{
    min-width:290px;padding:16px 18px;background:#fff;border:1px solid var(--line);
    border-radius:16px;box-shadow:var(--sh);
  }
  .search-label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}
  .search-row{display:flex;gap:10px}
  .search-input{
    flex:1;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:10px;
    background:#fff;color:var(--text);font-size:15px;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .search-input::placeholder{color:var(--faint)}
  .search-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(26,92,216,.15)}
  .search-hint{font-size:13px;color:var(--faint);margin:10px 0 0}

  .rows{list-style:none;margin:8px 0 0;padding:0;border-top:1px solid var(--line)}
  .rows li{border-bottom:1px solid var(--line)}
  .row{
    display:grid;grid-template-columns:44px 88px minmax(0,1fr) auto auto 24px;
    align-items:center;gap:16px;padding:14px 16px;color:var(--text);border-radius:12px;
    transition:background .2s var(--ease);
  }
  .row:hover{background:#F0F5FF;color:var(--text)}
  .row:hover .row-arrow{transform:translateX(4px);color:var(--brand)}
  .row-idx{font-size:13px;font-weight:600;color:var(--faint);font-variant-numeric:tabular-nums}
  .row-thumb img{width:88px;height:56px;object-fit:cover;border-radius:10px;border:1px solid var(--line)}
  .row-main{min-width:0}
  .row-main b{display:block;font-size:16px;font-weight:600;color:var(--ink);line-height:1.5}
  .row-main span{
    display:block;font-size:14px;color:var(--muted);line-height:1.7;
    overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  }
  .row-time{font-size:13px;color:var(--faint);font-variant-numeric:tabular-nums;white-space:nowrap}
  .row-arrow{color:var(--faint);display:grid;place-items:center;transition:transform .2s var(--ease),color .2s var(--ease)}
  @media (max-width:900px){
    .row{grid-template-columns:32px minmax(0,1fr) 20px;gap:12px;padding:14px 10px}
    .row-thumb,.row .badge,.row-time{display:none}
  }

  /* ============ FAQ ============ */
  .faq-wrap{max-width:900px}
  .faq{border-bottom:1px solid var(--line)}
  .faq:first-of-type{border-top:1px solid var(--line);margin-top:28px}
  .faq summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:20px 4px;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
    transition:color .2s var(--ease);
  }
  .faq summary::-webkit-details-marker{display:none}
  .faq summary:hover{color:var(--brand)}
  .faq-ico{
    width:28px;height:28px;flex:none;border-radius:50%;border:1px solid var(--line);
    color:var(--brand);display:grid;place-items:center;background:#fff;
    transition:background .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
  }
  .faq[open] .faq-ico{background:var(--brand-light);border-color:var(--brand);transform:rotate(180deg)}
  .faq-ico svg .v{transition:opacity .24s var(--ease)}
  .faq[open] .faq-ico svg .v{opacity:0}
  .faq-body{padding:0 4px 22px;font-size:16px;color:var(--muted);line-height:1.9;max-width:760px}
  .faq-body p:last-child{margin-bottom:0}

  /* ============ 相关分类卡 ============ */
  .cards-3{display:grid;gap:24px}
  @media (min-width:768px){ .cards-3{grid-template-columns:repeat(3,1fr)} }
  .rel-card{
    display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
    border-radius:16px;overflow:hidden;box-shadow:var(--sh);color:var(--text);
    transition:transform .24s var(--ease),box-shadow .24s var(--ease);
  }
  .rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);color:var(--text)}
  .rel-card figure{margin:0;overflow:hidden}
  .rel-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease)}
  .rel-card:hover img{transform:scale(1.04)}
  .rel-card-body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1}
  .rel-card-body h3{font-size:17px;font-weight:600;color:var(--ink);margin:0 0 8px;line-height:1.45}
  .rel-card-body p{font-size:14px;color:var(--muted);line-height:1.7;margin:0 0 14px}
  .rel-card-body .link-more{margin-top:auto}

  /* ============ CTA 波段 ============ */
  .cta-band{
    position:relative;overflow:hidden;color:#fff;
    background:linear-gradient(120deg,#0A1F3D 0%,#123263 100%);
    padding:56px 0;
  }
  @media (min-width:768px){ .cta-band{padding:76px 0} }
  .cta-band::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.06) 0 1px,transparent 1px 16px);
  }
  .cta-band::after{
    content:"";position:absolute;right:-120px;bottom:-160px;width:420px;height:420px;border-radius:50%;
    background:radial-gradient(circle,rgba(255,122,26,.34),transparent 70%);pointer-events:none;
  }
  .cta-inner{position:relative;z-index:1;display:flex;flex-direction:column;align-items:flex-start;gap:26px}
  @media (min-width:768px){ .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:48px} }
  .cta-band .h2{color:#fff;max-width:520px}
  .cta-band p{color:#B9CBE4;font-size:15px;margin:10px 0 0;max-width:560px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:none}

  /* ============ 页脚 ============ */
  .site-footer{position:relative;background:var(--ink);color:#C7D5E8;overflow:hidden}
  .site-footer::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 1px,transparent 1px 14px);
  }
  .site-footer .wrap{position:relative;z-index:1;padding-top:56px;padding-bottom:24px}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
  @media (max-width:1023px){ .footer-grid{grid-template-columns:1fr 1fr} }
  @media (max-width:640px){ .footer-grid{grid-template-columns:1fr;gap:28px} }
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:14px}
  .footer-brand .brand-mark{background:linear-gradient(135deg,var(--brand),#0E3E9B)}
  .footer-brand b{display:block;font-size:17px;font-weight:700;line-height:1.3}
  .footer-brand small{display:block;font-size:13px;color:#8FA6C4;line-height:1.5}
  .footer-note{font-size:14px;line-height:1.85;color:#9DB1CC;max-width:340px;margin:0}
  .footer-title{font-size:14px;font-weight:600;color:#fff;margin:0 0 14px;letter-spacing:.04em}
  .footer-link{display:inline-block;font-size:14px;color:#A9BDD8;padding:5px 0;transition:color .2s var(--ease),transform .2s var(--ease)}
  .footer-link:hover{color:#fff;transform:translateX(2px)}
  .footer-disclaimer{font-size:13px;line-height:1.85;color:#8FA6C4;margin:0;max-width:380px}
  .footer-bottom{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
    border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:20px;
    font-size:13px;color:#8FA6C4;
  }
  .footer-bottom .link-more{font-size:13px}
  .to-top{
    position:fixed;right:20px;bottom:24px;width:46px;height:46px;border-radius:50%;
    background:var(--brand);color:#fff;display:grid;place-items:center;z-index:60;
    box-shadow:0 12px 28px -12px rgba(26,92,216,.85);
    transition:background .22s var(--ease),transform .22s var(--ease);
  }
  .to-top:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px)}

  /* ============ 移动端导航 ============ */
  @media (max-width:1023px){
    .nav-burger{display:grid}
    .header-inner{justify-content:space-between;gap:10px}
    .main-nav{
      position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;
      background:#fff;border-bottom:1px solid var(--line);padding:8px 16px 18px;
      box-shadow:0 18px 40px -16px rgba(16,42,76,.22);
      max-height:calc(100vh - 72px);overflow-y:auto;display:none;
    }
    .nav-toggle:checked ~ .main-nav{display:flex}
    .nav-link{
      height:54px;justify-content:space-between;padding:0 12px;border-radius:0;
      border-bottom:1px solid var(--line);font-size:16px;
    }
    .nav-link:hover,.nav-link:focus-visible{background:#F0F5FF}
    .nav-link::after{display:none}
    .nav-link.is-active{background:#F0F5FF;border-left:3px solid var(--brand);padding-left:9px}
    .nav-item{position:static}
    .mega-panel{display:none}
    .brand-text small{font-size:13px}
    .header-actions .header-cta{display:none}
  }
  @media (max-width:520px){
    .brand-text small{display:none}
    .stats{grid-template-columns:1fr}
    .search-block{min-width:0;width:100%}
  }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
:root{
  --brand:#1A5CD8;--brand-dark:#1449AF;--brand-soft:#EAF1FF;--brand-soft-2:#F0F5FF;
  --accent:#FF7A1A;--accent-hover:#FF8C3A;
  --teal:#12A594;--teal-soft:#E6F6F4;--teal-deep:#0B7D70;
  --ink:#0A1F3D;--bg:#F5F8FC;--card:#FFFFFF;--line:#E3EAF3;
  --text:#1B2733;--muted:#5B6B80;--faint:#8A99AC;
  --r-card:16px;--r-img:12px;--r-pill:999px;--r-input:10px;
  --sh-1:0 1px 2px rgba(16,42,76,.04),0 8px 24px -12px rgba(16,42,76,.14);
  --sh-2:0 2px 4px rgba(16,42,76,.06),0 18px 40px -16px rgba(16,42,76,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
}
/* ===== reset / base ===== */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;background:var(--bg);color:var(--text);font-size:16px;line-height:1.9;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--brand);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--brand-dark)}
button,input,textarea,select{font:inherit;color:inherit}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding-left:16px;padding-right:16px}
@media(min-width:768px){.wrap{padding-left:24px;padding-right:24px}}
/* ===== 通用按钮 / 链接 / 徽章 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-pill);border:1px solid transparent;font-size:15px;font-weight:600;line-height:1;cursor:pointer;white-space:nowrap;transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 24px -12px rgba(255,122,26,.72)}
.btn-accent:hover{background:var(--accent-hover);color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px -14px rgba(255,122,26,.8)}
.btn-ghost{background:#fff;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-2px)}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-2px)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.link-more svg{transition:transform .22s var(--ease)}
.link-more:hover svg{transform:translateX(4px)}
.badge{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--r-pill);font-size:13px;font-weight:600;line-height:1;white-space:nowrap}
.badge-brand{background:var(--brand-soft);color:var(--brand-dark)}
.badge-teal{background:var(--teal-soft);color:var(--teal-deep)}
.badge-neutral{background:#F1F5FA;color:var(--muted)}
/* ===== header / 导航 ===== */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 4px 16px -8px rgba(16,42,76,.12)}
.header-inner{position:relative;display:flex;flex-wrap:wrap;align-items:center;gap:14px;min-height:68px;padding-top:8px;padding-bottom:8px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{width:38px;height:38px;flex:none;border-radius:12px;background:linear-gradient(135deg,#1A5CD8,#3C7BEC);color:#fff;display:flex;align-items:center;justify-content:center}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text b{font-size:17px;font-weight:800;letter-spacing:.4px}
.brand-text small{font-size:13px;color:var(--muted);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{position:relative;display:inline-flex;align-items:center;gap:5px;height:44px;padding:0 14px;border-radius:10px;font-size:15px;font-weight:600;color:var(--text);white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:50%;right:50%;bottom:5px;height:2px;border-radius:2px;background:var(--brand);transition:left .24s var(--ease),right .24s var(--ease)}
.nav-link:hover,.nav-link:focus-visible{color:var(--brand)}
.nav-item:hover .nav-link,.nav-item:focus-within .nav-link{color:var(--brand)}
.nav-item:hover .nav-link::after,.nav-item:focus-within .nav-link::after,.nav-link.is-active::after{left:14px;right:14px}
.nav-link.is-active{color:var(--brand)}
.nav-caret{display:inline-flex;transition:transform .24s var(--ease)}
.nav-item:hover .nav-caret,.nav-item:focus-within .nav-caret,.sub-toggle:checked ~ .nav-link .nav-caret{transform:rotate(180deg)}
.sub-toggle,.nav-drawer-toggle{position:absolute;width:1px;height:1px;opacity:0;margin:0;pointer-events:none}
.sub-caret{display:none}
.nav-burger{display:none}
.header-actions{display:flex;align-items:center;gap:10px}
.icon-btn{width:44px;height:44px;flex:none;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--muted);display:inline-flex;align-items:center;justify-content:center;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease)}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-soft-2)}
.icon-btn:hover svg{transform:translateX(2px)}
.icon-btn svg{transition:transform .22s var(--ease)}
/* Mega 面板 */
.nav-item{position:relative}
.mega-panel{position:absolute;top:calc(100% + 10px);left:0;width:680px;max-width:min(680px,92vw);z-index:60;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-2);padding:24px;display:grid;grid-template-columns:1.15fr 1fr 200px;gap:22px;opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease)}
.nav-item:hover .mega-panel,.nav-item:focus-within .mega-panel,.sub-toggle:checked ~ .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.nav-item:last-child .mega-panel{left:auto;right:0}
.mega-title{font-size:13px;font-weight:700;color:var(--faint);letter-spacing:.06em;margin-bottom:10px}
.mega-cat{display:flex;gap:10px;align-items:flex-start;padding:8px 10px;border-radius:10px;color:var(--text);transition:background-color .2s var(--ease),color .2s var(--ease)}
.mega-cat:hover{background:var(--brand-soft);color:var(--brand-dark)}
.mega-cat-ico{flex:none;width:30px;height:30px;border-radius:9px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;transition:background-color .2s var(--ease)}
.mega-cat:hover .mega-cat-ico{background:#fff}
.mega-cat-tx b{display:block;font-size:14px;font-weight:600;line-height:1.45}
.mega-cat-tx span{display:block;font-size:13px;color:var(--muted);line-height:1.6}
.mega-news{display:block;padding:9px 0;border-bottom:1px dashed var(--line);color:var(--text)}
.mega-news:last-child{border-bottom:none}
.mega-news b{display:block;font-size:14px;font-weight:600;line-height:1.5;transition:color .2s var(--ease)}
.mega-news:hover b{color:var(--brand)}
.mega-news time{font-size:13px;color:var(--faint);font-variant-numeric:tabular-nums;font-weight:600}
.mega-side{background:var(--brand-soft-2);border:1px solid var(--line);border-radius:12px;padding:12px;display:flex;flex-direction:column;gap:10px;justify-content:space-between}
.mega-side img{width:100%;height:84px;object-fit:cover;border-radius:9px}
.mega-side p{font-size:13px;color:var(--muted);line-height:1.6}
.mega-side .link-more{font-size:13px}
/* ===== 页头 ===== */
.page-head{position:relative;overflow:hidden;background:var(--bg);border-bottom:1px solid var(--line)}
.page-head::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.webp');background-size:cover;background-position:center;opacity:.09}
.page-head::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(26,92,216,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(26,92,216,.07) 1px,transparent 1px);background-size:46px 46px}
.page-head-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:18px;padding-top:36px;padding-bottom:34px}
@media(min-width:1024px){.page-head-grid{grid-template-columns:1.45fr 1fr;align-items:end;gap:48px;padding-top:64px;padding-bottom:56px}}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;min-height:44px;font-size:13px;color:var(--muted)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{display:inline-flex;color:var(--faint)}
.page-head h1{font-size:clamp(30px,4.6vw,52px);line-height:1.18;font-weight:800;color:var(--ink);letter-spacing:-.5px;margin-top:6px}
.page-head-side p{font-size:16px;line-height:1.9;color:var(--muted);max-width:26em}
.page-head-side .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
/* ===== 板块节奏 ===== */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:80px 0}}
@media(min-width:1024px){.section{padding:96px 0}}
.band-white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:30px}
.sec-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;font-weight:700;color:var(--ink);letter-spacing:-.3px}
.sec-head h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--ink)}
.sec-desc{margin-top:8px;font-size:14px;color:var(--muted);max-width:36em}
/* ===== 栏目说明：左文右图 ===== */
.intro-grid{display:grid;grid-template-columns:1fr;gap:28px}
@media(min-width:1024px){.intro-grid{grid-template-columns:1.05fr .95fr;gap:52px;align-items:start}}
.prose p{font-size:16px;line-height:1.9;color:var(--muted);margin-bottom:1.1em;max-width:40em}
.prose p:last-child{margin-bottom:0}
.prose strong{color:var(--ink);font-weight:600}
.intro-media{margin-bottom:20px;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);background:var(--brand-soft);aspect-ratio:16/10}
.intro-media img{width:100%;height:100%;object-fit:cover}
.point-list{display:grid;gap:12px}
.point{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
.point:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.point-ico{flex:none;width:32px;height:32px;border-radius:9px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center}
.point b{display:block;font-size:15px;font-weight:600;color:var(--ink);line-height:1.5}
.point span{display:block;font-size:14px;color:var(--muted);line-height:1.7}
/* ===== 数据条 ===== */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;margin-top:32px;background:rgba(18,165,148,.35);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
@media(min-width:768px){.stats{grid-template-columns:repeat(4,1fr)}}
.stat{background:#fff;padding:20px 18px}
.stat b{display:block;font-size:28px;font-weight:600;line-height:1.2;color:var(--ink);font-variant-numeric:tabular-nums}
.stat span{display:block;font-size:13px;color:var(--muted);line-height:1.6}
/* ===== 卡片墙 ===== */
.card-wall{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.card-wall{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.card-wall{grid-template-columns:repeat(3,1fr);gap:24px}}
.n-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease)}
.n-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.n-card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--brand-soft)}
.n-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .26s var(--ease)}
.n-card:hover .n-card-media img{transform:scale(1.04)}
.n-card-media .badge{position:absolute;top:12px;left:12px;background:rgba(10,31,61,.8);color:#fff}
.n-card-body{display:flex;flex-direction:column;flex:1;padding:18px 20px 20px}
.n-card-body h3{font-size:17px;font-weight:600;line-height:1.45;color:var(--ink);margin-bottom:8px}
.n-card-body p{font-size:14px;line-height:1.75;color:var(--muted);margin-bottom:14px}
.n-card-body .link-more{margin-top:auto}
/* ===== 折叠面板 ===== */
.acc{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.acc-item+.acc-item{border-top:1px solid var(--line)}
.acc-item summary{display:flex;align-items:flex-start;gap:16px;padding:20px 22px;cursor:pointer;list-style:none;transition:background-color .22s var(--ease)}
.acc-item summary::-webkit-details-marker{display:none}
.acc-item summary:hover{background:var(--brand-soft-2)}
.acc-num{flex:none;font-size:15px;font-weight:600;color:var(--faint);font-variant-numeric:tabular-nums;line-height:1.7}
.acc-q{flex:1;font-size:16px;font-weight:600;color:var(--ink);line-height:1.7}
.acc-ico{flex:none;width:24px;height:24px;color:var(--brand);margin-top:2px}
.acc-ico .vline{transition:opacity .22s var(--ease)}
details[open]>.acc-item summary .vline,.acc-item[open] summary .vline{opacity:0}
.acc-a{padding:0 22px 22px 62px;font-size:15px;line-height:1.9;color:var(--muted);max-width:46em}
@media(max-width:639px){.acc-a{padding:0 20px 20px 20px}}
details[open] .acc-a{animation:softIn .26s var(--ease) both}
@keyframes softIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}
/* ===== FAQ ===== */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 2px;cursor:pointer;list-style:none;font-size:17px;font-weight:600;color:var(--ink);transition:color .2s var(--ease)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-ico{flex:none;width:24px;height:24px;color:var(--brand);transition:transform .24s var(--ease)}
details[open] .faq-ico{transform:rotate(90deg)}
.faq-a{padding:0 2px 20px;font-size:15px;line-height:1.9;color:var(--muted);max-width:44em}
/* ===== 相关分类卡 ===== */
.rel-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:1024px){.rel-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.rel-card{display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:16px;box-shadow:var(--sh-1);color:var(--text);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CDDDF5;color:var(--text)}
.rel-card img{flex:none;width:96px;height:72px;object-fit:cover;border-radius:var(--r-img)}
.rel-card b{display:block;font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;margin-bottom:4px}
.rel-card span{display:block;font-size:14px;color:var(--muted);line-height:1.6}
.rel-arrow{margin-left:auto;color:var(--brand);display:inline-flex;transition:transform .22s var(--ease)}
.rel-card:hover .rel-arrow{transform:translateX(4px)}
/* ===== CTA 波段 ===== */
.cta-band{position:relative;overflow:hidden;background:var(--ink);color:#fff}
.cta-band::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.055) 0 1px,transparent 1px 12px)}
.cta-band::after{content:"";position:absolute;right:-90px;top:-70px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(255,122,26,.45),transparent 68%)}
.cta-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:26px;text-align:center;padding:56px 0}
@media(min-width:1024px){.cta-grid{grid-template-columns:1.15fr .85fr;align-items:center;gap:40px;text-align:left;padding:82px 0}}
.cta-grid h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;font-weight:700;color:#fff}
.cta-grid p{margin-top:12px;font-size:16px;line-height:1.9;color:#B9C8DC;max-width:32em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
@media(min-width:1024px){.cta-actions{justify-content:flex-end}}
/* ===== 页脚 ===== */
.site-footer{position:relative;background:var(--ink);color:#C7D3E3}
.site-footer .wrap{padding-top:56px;padding-bottom:24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.12)}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:44px}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:14px}
.site-footer .brand-mark{width:40px;height:40px;flex:none;border-radius:12px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);color:#fff;display:flex;align-items:center;justify-content:center}
.footer-brand b{display:block;font-size:17px;font-weight:800;line-height:1.35;color:#fff}
.footer-brand small{display:block;font-size:13px;color:#8FA6C4;line-height:1.5}
.footer-note{font-size:14px;line-height:1.9;color:#9FB2CB;max-width:34em}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:12px}
.footer-link{display:inline-block;padding:5px 0;font-size:14px;color:#B9C8DC;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-link:hover{color:#fff;transform:translateX(2px)}
.footer-disclaimer{font-size:13px;line-height:1.85;color:#8FA6C4}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;padding-top:20px;font-size:13px;color:#8FA6C4}
.footer-bottom .link-more{color:#fff}
.to-top{position:fixed;right:18px;bottom:24px;z-index:60;width:46px;height:46px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-2);transition:background-color .22s var(--ease),transform .22s var(--ease)}
.to-top:hover{background:var(--brand-dark);color:#fff;transform:translateY(-3px)}
/* ===== 断点：导航抽屉 ===== */
@media(max-width:1023px){
  .nav-burger{display:inline-flex;order:3;margin-left:auto;width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:5px;border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer}
  .nav-burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .22s var(--ease),opacity .22s var(--ease)}
  .nav-drawer-toggle:checked ~ .nav-burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-drawer-toggle:checked ~ .nav-burger span:nth-child(2){opacity:0}
  .nav-drawer-toggle:checked ~ .nav-burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .header-actions{order:2}
  .main-nav{order:4;display:none;flex-basis:100%;flex-direction:column;align-items:stretch;gap:0;margin-left:0;padding:2px 0 12px}
  .nav-drawer-toggle:checked ~ .main-nav{display:flex}
  .nav-link{height:52px;padding:0 12px;border-radius:0;justify-content:flex-start;border-bottom:1px solid var(--line);font-size:15px}
  .nav-link::after{display:none}
  .nav-link.is-active{background:var(--brand-soft-2);box-shadow:inset 3px 0 0 var(--brand)}
  .nav-item{position:relative}
  .sub-caret{display:flex;position:absolute;top:0;right:0;width:52px;height:52px;align-items:center;justify-content:center;color:var(--muted);cursor:pointer}
  .sub-caret svg{transition:transform .24s var(--ease)}
  .sub-toggle:checked ~ .sub-caret svg{transform:rotate(180deg)}
  .mega-panel{position:static;width:auto;max-width:none;display:none;grid-template-columns:1fr;gap:14px;padding:14px 12px 18px;border:none;border-bottom:1px solid var(--line);border-radius:0;box-shadow:none;opacity:1;visibility:visible;transform:none}
  .nav-item .sub-toggle:checked ~ .mega-panel{display:grid;animation:softIn .24s var(--ease) both}
  .nav-item:hover .mega-panel{opacity:1;visibility:visible;transform:none}
  .mega-cat{padding:10px 8px}
  .mega-side{flex-direction:row;align-items:center;gap:12px}
  .mega-side img{width:96px;height:64px;flex:none}
}
@media(max-width:639px){
  .icon-btn{display:none}
  .brand-text small{display:none}
  .brand-text b{font-size:16px}
  .btn-sm{height:40px;padding:0 14px;font-size:14px}
}