/* roulang page: index */
:root{
    --ink:#0B0B0D;
    --ink-2:#17171A;
    --paper:#F7F4EF;
    --paper-2:#EFEAE2;
    --brand:#C8102E;
    --brand-deep:#8E0A20;
    --brand-soft:#F7DDE1;
    --line:rgba(11,11,13,.10);
    --line-dk:rgba(255,255,255,.14);
    --muted:#6E6E74;
    --silver:#B9BDC4;
    --r-card:6px;
    --r-btn:4px;
    --r-img:8px;
    --shadow-pop:0 12px 32px rgba(11,11,13,.10);
    --ease:cubic-bezier(.22,.61,.36,1);
    --container:1280px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16.5px;
    line-height:1.9;
    font-variant-numeric:tabular-nums;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;height:auto;display:block;border:0;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4{margin:0;line-height:1.2;font-weight:800;letter-spacing:-.02em;}
  p{margin:0;}
  time{display:inline-block;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
  @media(max-width:1023px){.container{padding:0 24px;}}
  @media(max-width:639px){.container{padding:0 20px;}}

  /* ============ 顶部信息条 ============ */
  .topbar{background:var(--ink);color:rgba(247,244,239,.82);font-size:13px;line-height:1.7;}
  .topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;}
  .topbar-note{white-space:nowrap;}
  .topbar-domain{color:rgba(247,244,239,.42);letter-spacing:.05em;font-size:12.5px;}
  .topbar-actions{display:flex;gap:22px;}
  .topbar-actions a{color:rgba(247,244,239,.82);transition:color .2s;}
  .topbar-actions a:hover{color:#fff;}
  @media(max-width:639px){
    .topbar-domain{display:none;}
    .topbar-actions a:last-child{display:none;}
  }

  /* ============ 主导航 ============ */
  .site-header{position:sticky;top:0;z-index:50;background:var(--paper);border-bottom:1px solid var(--line);transition:border-color .24s var(--ease);}
  .site-header.is-stuck{border-bottom-color:rgba(11,11,13,.22);}
  .nav-inner{display:flex;align-items:center;gap:32px;min-height:76px;}
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
  .brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:4px;background:var(--brand);color:#fff;font-size:11.5px;font-weight:900;letter-spacing:.02em;}
  .brand-text{font-size:17px;font-weight:800;white-space:nowrap;}
  .main-nav{display:flex;align-items:center;gap:28px;margin-left:6px;}
  .nav-link{position:relative;padding:26px 0;font-size:15px;font-weight:600;color:#2b2b30;transition:color .2s;}
  .nav-link::after{content:"";position:absolute;left:0;right:0;bottom:18px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);}
  .nav-link:hover{color:var(--brand);}
  .nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
  .nav-link.active{color:var(--ink);}
  .nav-tools{margin-left:auto;display:flex;align-items:center;gap:12px;}
  .icon-btn{position:relative;display:grid;place-items:center;width:40px;height:40px;border-radius:var(--r-btn);border:1px solid transparent;color:#2b2b30;transition:background .2s,color .2s,border-color .2s;}
  .icon-btn:hover{background:var(--paper-2);border-color:var(--line);color:var(--brand);}
  .icon-btn svg{width:20px;height:20px;stroke-width:1.6;}
  .badge-count{position:absolute;top:1px;right:1px;min-width:17px;height:17px;padding:0 4px;border-radius:999px;background:var(--brand);color:#fff;font-size:11px;font-weight:700;display:grid;place-items:center;line-height:1;}
  .drawer-btn{display:none;}

  /* ============ 按钮 ============ */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:50px;padding:0 28px;border-radius:var(--r-btn);font-size:15px;font-weight:700;border:1.5px solid transparent;white-space:nowrap;transition:background .2s,color .2s,border-color .2s,transform .16s var(--ease),box-shadow .2s;}
  .btn:active{transform:scale(.99);}
  .btn-primary{background:var(--brand);color:#fff;}
  .btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 8px 20px rgba(200,16,46,.28);}
  .btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
  .btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px);}
  .btn-on-dark{background:var(--paper);color:var(--ink);}
  .btn-on-dark:hover{background:var(--brand);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(200,16,46,.28);}
  .btn-outline-light{background:transparent;color:var(--paper);border-color:rgba(255,255,255,.5);}
  .btn-outline-light:hover{background:rgba(255,255,255,.10);border-color:#fff;transform:translateY(-1px);}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;}
  .text-link{position:relative;display:inline-block;font-size:14px;font-weight:700;padding-bottom:4px;}
  .text-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .26s var(--ease),background-color .2s;}
  .text-link:hover{color:var(--brand);}
  .text-link:hover::after{transform:scaleX(1);background:var(--brand);}

  /* ============ 通用板块 ============ */
  .section{padding:110px 0;}
  @media(max-width:1023px){.section{padding:82px 0;}}
  @media(max-width:639px){.section{padding:62px 0;}}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:52px;}
  .section-head h2{font-size:clamp(1.5rem,2.6vw,2.25rem);}
  @media(max-width:639px){.section-head{margin-bottom:30px;}}
  .deco-idx{display:block;font-size:12.5px;font-weight:800;color:var(--brand);letter-spacing:.14em;margin-bottom:12px;}
  .badge{display:inline-block;padding:4px 10px;border-radius:2px;font-size:11px;font-weight:700;letter-spacing:.06em;line-height:1.55;}
  .badge-hot{background:var(--brand);color:#fff;}
  .badge-new{background:var(--ink);color:#fff;}
  .badge-soft{background:var(--brand-soft);color:var(--brand-deep);}

  /* ============ Hero ============ */
  .hero{position:relative;overflow:hidden;background:var(--paper);padding:70px 0 84px;}
  .hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:.08;pointer-events:none;}
  .hero-inner{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:64px;align-items:center;min-height:78vh;}
  .tag-badge{display:inline-block;padding:5px 12px;border-radius:2px;background:var(--brand);color:#fff;font-size:12px;font-weight:700;letter-spacing:.06em;}
  .hero-title{font-size:clamp(2rem,4.4vw,3.6rem);line-height:1.08;font-weight:900;margin:22px 0 18px;}
  .hero-sub{font-size:17px;color:#3d3d44;max-width:540px;line-height:1.9;}
  .hero-price{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin:30px 0 0;}
  .price-now{font-size:clamp(28px,3.2vw,38px);font-weight:900;color:var(--brand);line-height:1;}
  .price-now i{font-style:normal;font-size:.55em;font-weight:800;vertical-align:top;margin-right:2px;}
  .price-was{font-size:15px;color:var(--muted);text-decoration:line-through;}
  .spec-line{margin-top:12px;font-size:14px;color:var(--muted);}
  .hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin:30px 0 34px;}
  .hero-metrics{display:flex;gap:36px;flex-wrap:wrap;padding-top:26px;border-top:1px solid var(--line);}
  .hero-metrics li{display:flex;align-items:center;gap:9px;font-size:13.5px;color:#3d3d44;}
  .hero-metrics svg{width:20px;height:20px;color:var(--brand);stroke-width:1.6;flex:0 0 auto;}
  .hero-media{position:relative;}
  .hero-media img{width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line);}
  .spec-chip{position:absolute;left:-16px;bottom:32px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-btn);padding:12px 18px;box-shadow:var(--shadow-pop);font-size:13.5px;font-weight:700;line-height:1.5;}
  .spec-chip span{display:block;font-size:11.5px;font-weight:500;color:var(--muted);letter-spacing:.03em;}
  .deco-num{position:absolute;right:0;top:-44px;font-size:120px;font-weight:900;line-height:.8;color:rgba(11,11,13,.06);pointer-events:none;user-select:none;}
  @media(max-width:1023px){
    .hero-inner{grid-template-columns:1fr;gap:44px;min-height:0;padding-top:8px;}
    .hero-media{order:-1;max-width:520px;}
    .deco-num{display:none;}
    .spec-chip{left:auto;right:12px;bottom:12px;}
  }
  @media(max-width:639px){
    .hero{padding:44px 0 60px;}
    .hero-metrics{gap:16px 26px;}
    .hero-metrics li{font-size:13px;}
    .price-now{font-size:30px;}
  }

  /* ============ 商品网格 ============ */
  .goods-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
  @media(max-width:1279px){.goods-grid{grid-template-columns:repeat(3,1fr);}}
  @media(max-width:1023px){.goods-grid{grid-template-columns:repeat(2,1fr);}}
  @media(max-width:639px){.goods-grid{grid-template-columns:1fr;gap:18px;}}
  .goods-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:transform .24s var(--ease),border-color .24s,box-shadow .24s;}
  .goods-card:hover{transform:translateY(-2px);border-color:var(--brand);}
  .goods-card.is-wide{grid-column:span 2;flex-direction:row;}
  .goods-card.is-wide .card-media{flex:0 0 50%;}
  .goods-card.is-wide .card-media img{aspect-ratio:1/1;height:100%;}
  .goods-card.is-wide .card-body{flex:1 1 auto;justify-content:center;}
  .card-media{position:relative;display:block;overflow:hidden;background:var(--paper-2);}
  .card-media img{width:100%;aspect-ratio:4/5;object-fit:cover;transition:transform .6s var(--ease);}
  .goods-card:hover .card-media img{transform:scale(1.04);}
  .card-media .badge{position:absolute;left:12px;top:12px;z-index:2;}
  .card-body{display:flex;flex-direction:column;gap:8px;padding:18px 18px 20px;}
  .card-title{font-size:17px;line-height:1.45;font-weight:700;}
  .card-title a{transition:color .2s;}
  .card-title a:hover{color:var(--brand);}
  .card-meta{font-size:13px;color:var(--muted);line-height:1.7;}
  .rate{display:flex;align-items:center;gap:7px;font-size:12.5px;color:var(--muted);}
  .stars{color:var(--brand);font-size:13px;letter-spacing:2px;}
  .price-row{display:flex;align-items:baseline;gap:10px;margin-top:2px;}
  .price{font-size:22px;font-weight:900;}
  .price i{font-style:normal;font-size:.6em;font-weight:800;vertical-align:top;margin-right:1px;}
  .price-old{font-size:13px;color:var(--muted);text-decoration:line-through;}
  .add-btn{align-self:flex-start;margin-top:6px;border-color:var(--line);}
  .goods-card:hover .add-btn{background:var(--brand);border-color:var(--brand);color:#fff;transform:none;box-shadow:none;}
  @media(max-width:639px){
    .goods-card.is-wide{grid-column:span 1;flex-direction:column;}
    .goods-card.is-wide .card-media{flex:none;}
    .goods-card.is-wide .card-media img{aspect-ratio:4/5;height:auto;}
  }

  /* ============ 评价车轮 ============ */
  .rev-wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;overflow-x:auto;overflow-y:hidden;scroll-snap-type:x mandatory;scroll-behavior:smooth;scrollbar-width:none;-ms-overflow-style:none;}
  .rev-wrap::-webkit-scrollbar{display:none;}
  .rev-track{display:flex;gap:24px;}
  .rev-card{flex:0 0 calc((100% - 48px)/3);scroll-snap-align:start;display:flex;flex-direction:column;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px 24px;transition:border-color .24s;}
  .rev-card:hover{border-color:var(--brand);}
  .rev-head{display:flex;align-items:center;gap:12px;}
  .rev-avatar{width:42px;height:42px;border-radius:50%;background:var(--brand-soft);color:var(--brand-deep);display:grid;place-items:center;font-weight:800;font-size:15px;flex:0 0 auto;}
  .rev-name{font-size:14px;font-weight:700;line-height:1.5;}
  .rev-info{font-size:12px;color:var(--muted);line-height:1.5;}
  .rev-text{font-size:15px;line-height:1.9;color:#33333a;}
  .carousel-nav{display:flex;gap:10px;}
  .sq-btn{width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);display:grid;place-items:center;color:var(--ink);transition:background .2s,color .2s,border-color .2s,transform .16s var(--ease);}
  .sq-btn:hover{background:var(--ink);border-color:var(--ink);color:#fff;}
  .sq-btn:active{transform:scale(.96);}
  .sq-btn svg{width:18px;height:18px;stroke-width:1.8;}
  .rev-dots{display:flex;justify-content:center;gap:8px;margin-top:28px;}
  .rev-dot{width:8px;height:8px;border-radius:50%;background:var(--silver);transition:background .2s,width .24s var(--ease);}
  .rev-dot.active{width:22px;border-radius:4px;background:var(--brand);}
  @media(max-width:1023px){.rev-card{flex:0 0 calc((100% - 24px)/2);}}
  @media(max-width:639px){
    .rev-wrap{padding:0 20px;}
    .rev-card{flex:0 0 84%;padding:22px 20px;}
  }

  /* ============ 深色保障条 ============ */
  .band-dark{background:var(--ink);color:var(--paper);padding:58px 0;}
  .band-inner{display:grid;grid-template-columns:repeat(4,1fr);}
  .band-item{padding:0 28px;border-left:1px solid var(--line-dk);}
  .band-item:first-child{border-left:0;padding-left:0;}
  .band-item svg{width:26px;height:26px;color:var(--brand);stroke-width:1.5;}
  .band-item h3{font-size:16px;font-weight:700;margin:14px 0 6px;}
  .band-item p{font-size:13px;line-height:1.75;color:rgba(247,244,239,.62);}
  @media(max-width:1023px){
    .band-inner{grid-template-columns:1fr 1fr;gap:34px 0;}
    .band-item{padding:0 22px;}
    .band-item:nth-child(odd){border-left:0;padding-left:0;}
  }
  @media(max-width:639px){
    .band-dark{padding:44px 0;}
    .band-inner{grid-template-columns:1fr;gap:28px;}
    .band-item{border-left:0;padding:0;}
  }

  /* ============ 最新信息 ============ */
  .news-layout{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:44px;align-items:start;}
  .news-feature{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:transform .24s var(--ease),border-color .24s;}
  .news-feature:hover{transform:translateY(-2px);border-color:var(--brand);}
  .news-feature-media{display:block;overflow:hidden;background:var(--paper-2);}
  .news-feature-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .6s var(--ease);}
  .news-feature:hover .news-feature-media img{transform:scale(1.04);}
  .news-feature-body{display:flex;flex-direction:column;align-items:flex-start;gap:12px;padding:24px 24px 26px;}
  .news-feature-body h3{font-size:21px;line-height:1.45;}
  .news-feature-body h3 a{transition:color .2s;}
  .news-feature-body h3 a:hover{color:var(--brand);}
  .news-feature-body p{font-size:15px;line-height:1.85;color:#4a4a52;}
  .news-time{font-size:13px;color:var(--muted);white-space:nowrap;}
  .news-list{display:flex;flex-direction:column;}
  .news-list li{border-bottom:1px solid var(--line);}
  .news-list li:first-child{border-top:1px solid var(--line);}
  .news-list a{display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:baseline;padding:20px 8px;transition:background .2s,padding .2s;}
  .news-list a:hover{background:var(--paper-2);padding-left:14px;}
  .news-cat{font-size:12px;font-weight:700;color:var(--brand);letter-spacing:.04em;white-space:nowrap;}
  .news-title{font-size:15.5px;font-weight:600;line-height:1.6;transition:color .2s;}
  .news-list a:hover .news-title{color:var(--brand);}
  .empty-state{display:flex;flex-direction:column;align-items:center;gap:14px;padding:64px 24px;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);text-align:center;}
  .empty-state svg{width:34px;height:34px;color:var(--silver);stroke-width:1.4;}
  .empty-state p{font-size:15px;color:var(--muted);}
  @media(max-width:1023px){
    .news-layout{grid-template-columns:1fr;gap:32px;}
  }
  @media(max-width:639px){
    .news-list a{grid-template-columns:1fr;gap:6px;padding:16px 4px;}
    .news-feature-body{padding:20px 18px 22px;}
    .news-feature-body h3{font-size:19px;}
  }

  /* ============ CTA 通栏 ============ */
  .cta-band{position:relative;overflow:hidden;background:var(--ink);color:var(--paper);padding:76px 0;}
  .cta-band::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:.10;}
  .cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
  .cta-inner h2{font-size:clamp(1.5rem,2.6vw,2.25rem);}
  .cta-inner p{margin-top:12px;font-size:15px;color:rgba(247,244,239,.70);max-width:540px;}
  .cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
  @media(max-width:639px){
    .cta-band{padding:52px 0;}
    .cta-actions{width:100%;}
    .cta-actions .btn{flex:1 1 auto;}
  }

  /* ============ FAQ ============ */
  .faq-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
  .faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:border-color .2s;}
  .faq-item.open{border-color:rgba(200,16,46,.42);}
  .faq-q{position:relative;width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:56px;padding:16px 22px;text-align:left;font-size:16.5px;font-weight:600;line-height:1.6;transition:color .2s;}
  .faq-q::before{content:"";position:absolute;left:0;top:50%;width:2px;height:26px;background:var(--brand);transform:translateY(-50%) scaleY(0);transform-origin:center;transition:transform .2s var(--ease);}
  .faq-q:hover{color:var(--brand);}
  .faq-item.open .faq-q::before{transform:translateY(-50%) scaleY(1);}
  .faq-icon{flex:0 0 auto;width:20px;height:20px;color:var(--muted);stroke-width:1.8;transition:transform .26s var(--ease),color .2s;}
  .faq-item.open .faq-icon{transform:rotate(180deg);color:var(--brand);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
  .faq-a-inner{padding:0 22px 22px;font-size:15.5px;line-height:1.9;color:#4a4a52;}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--ink);color:rgba(247,244,239,.72);padding:76px 0 0;}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:56px;}
  .footer-brand .brand-text{color:var(--paper);}
  .footer-desc{margin-top:16px;font-size:14px;line-height:1.85;max-width:290px;}
  .footer-social{display:flex;gap:12px;margin-top:20px;}
  .footer-social a{width:36px;height:36px;border:1px solid var(--line-dk);border-radius:var(--r-btn);display:grid;place-items:center;color:rgba(247,244,239,.70);transition:background .2s,border-color .2s,color .2s;}
  .footer-social a:hover{background:var(--brand);border-color:var(--brand);color:#fff;}
  .footer-social svg{width:17px;height:17px;stroke-width:1.6;}
  .footer-col h3{font-size:14px;font-weight:700;color:var(--paper);margin-bottom:18px;letter-spacing:.04em;}
  .footer-col li{margin-bottom:12px;}
  .footer-col a{font-size:14px;transition:color .2s,padding .2s;}
  .footer-col a:hover{color:#fff;padding-left:4px;}
  .footer-col p{font-size:14px;line-height:1.9;}
  .footer-bottom{border-top:1px solid var(--line-dk);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(247,244,239,.48);}
  @media(max-width:1023px){
    .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  }
  @media(max-width:639px){
    .site-footer{padding-top:52px;}
    .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:40px;}
  }

  /* ============ 移动抽屉 ============ */
  .drawer-mask{position:fixed;inset:0;z-index:90;background:rgba(11,11,13,.5);opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s;}
  .drawer-mask.show{opacity:1;visibility:visible;}
  .drawer{position:fixed;top:0;right:0;z-index:91;height:100%;width:min(86vw,360px);background:var(--paper);transform:translateX(100%);transition:transform .32s var(--ease);display:flex;flex-direction:column;padding:24px;overflow-y:auto;box-shadow:var(--shadow-pop);}
  .drawer.show{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:26px;}
  .drawer-nav{display:flex;flex-direction:column;}
  .drawer-nav a{padding:16px 0;font-size:16px;font-weight:600;border-bottom:1px solid var(--line);transition:color .2s,padding .2s;}
  .drawer-nav a:hover,.drawer-nav a.active{color:var(--brand);padding-left:4px;}
  .drawer-foot{margin-top:auto;padding-top:28px;display:flex;flex-direction:column;gap:12px;}
  .drawer-note{font-size:12.5px;color:var(--muted);text-align:center;letter-spacing:.04em;}

  /* ============ 入场动效 ============ */
  .js .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
  .js .reveal.in{opacity:1;transform:none;}
  @media(prefers-reduced-motion:reduce){
    .js .reveal{opacity:1;transform:none;transition:none;}
    *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  }

  /* ============ 断点：导航收起 ============ */
  @media(max-width:1023px){
    .main-nav{display:none;}
    .drawer-btn{display:grid;}
  }
  @media(max-width:639px){
    .nav-inner{min-height:66px;gap:14px;}
    .nav-tools .btn-primary{display:none;}
    .brand-text{font-size:15.5px;}
    .icon-btn{width:38px;height:38px;}
  }

/* roulang page: article */
:root{
    --ink:#0B0B0D;
    --ink-2:#17171A;
    --paper:#F7F4EF;
    --paper-2:#EFEAE2;
    --brand:#C8102E;
    --brand-deep:#8E0A20;
    --brand-soft:#F7DDE1;
    --line:rgba(11,11,13,.10);
    --line-dk:rgba(255,255,255,.14);
    --muted:#6E6E74;
    --silver:#B9BDC4;
    --ok:#1F7A4C;
    --warn:#B4771A;
    --r-card:6px;
    --r-btn:4px;
    --r-img:8px;
    --shadow-pop:0 12px 32px rgba(11,11,13,.10);
    --ease:cubic-bezier(.22,.61,.36,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei','Hiragino Sans GB',system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    font-variant-numeric:tabular-nums;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;}
  button{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  ::selection{background:var(--brand);color:#fff;}

  .container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px;}
  @media (min-width:768px){.container{padding:0 24px;}}
  @media (min-width:1024px){.container{padding:0 32px;}}

  .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;}

  /* ---------- 顶部信息条 ---------- */
  .topbar{background:var(--ink);color:var(--paper);font-size:13px;line-height:1.6;min-height:38px;display:flex;align-items:center;}
  .topbar-inner{display:flex;align-items:center;gap:18px;min-height:38px;}
  .topbar-tip{color:rgba(247,244,239,.92);letter-spacing:.01em;}
  .topbar-domain{color:rgba(247,244,239,.55);letter-spacing:.05em;}
  .topbar-actions{margin-left:auto;display:flex;gap:22px;}
  .topbar-link{color:rgba(247,244,239,.82);text-decoration:none;transition:color .2s var(--ease);}
  .topbar-link:hover{color:#fff;}
  @media (max-width:767px){
    .topbar-domain{display:none;}
    .topbar-actions .topbar-link:first-child{display:none;}
  }

  /* ---------- 主导航 ---------- */
  .nav-wrap{position:sticky;top:0;z-index:60;background:var(--paper);border-bottom:1px solid var(--line);transition:border-color .24s var(--ease),box-shadow .24s var(--ease);}
  .nav-wrap.is-stuck{border-bottom-color:rgba(11,11,13,.22);box-shadow:0 1px 0 rgba(11,11,13,.04);}
  .nav-inner{display:flex;align-items:center;gap:22px;min-height:76px;}

  .brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);}
  .brand-mark{width:38px;height:38px;display:grid;place-items:center;background:var(--brand);color:#fff;border-radius:4px;font-weight:900;font-size:13px;letter-spacing:.02em;}
  .brand-text{font-weight:800;font-size:18px;letter-spacing:-.02em;white-space:nowrap;}

  .main-nav{display:flex;align-items:center;gap:28px;margin-left:10px;}
  .nav-link{position:relative;display:inline-block;padding:26px 0;font-size:15px;font-weight:600;color:#2A2A2E;text-decoration:none;transition:color .2s var(--ease);}
  .nav-link::after{content:"";position:absolute;left:0;right:0;bottom:19px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);}
  .nav-link:hover{color:var(--brand);}
  .nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
  .nav-link.active{color:var(--ink);}

  .nav-tools{margin-left:auto;display:flex;align-items:center;gap:10px;}
  .icon-btn{position:relative;width:40px;height:40px;display:grid;place-items:center;background:transparent;border:1px solid var(--line);border-radius:4px;color:var(--ink);cursor:pointer;text-decoration:none;transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);}
  .icon-btn:hover{border-color:var(--brand);color:var(--brand);}
  .icon-btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
  .icon-btn svg{width:20px;height:20px;}
  .cart-badge{position:absolute;top:-7px;right:-7px;min-width:18px;height:18px;padding:0 4px;display:grid;place-items:center;background:var(--brand);color:#fff;font-size:11px;font-weight:700;border-radius:999px;}
  .menu-btn{display:none;}

  .btn-primary,.btn-ghost,.btn-on-dark,.btn-outline-light{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:50px;padding:0 28px;border-radius:var(--r-btn);
    font-size:15px;font-weight:700;text-decoration:none;cursor:pointer;border:0;
    transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  }
  .btn-primary{background:var(--brand);color:#fff;}
  .btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 8px 20px rgba(200,16,46,.28);}
  .btn-primary:active{transform:translateY(0) scale(.99);}
  .btn-primary:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
  .btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink);}
  .btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px);}
  .btn-ghost:active{transform:translateY(0) scale(.99);}
  .btn-ghost:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
  .btn-on-dark{background:var(--paper);color:var(--ink);}
  .btn-on-dark:hover{background:var(--brand);color:#fff;transform:translateY(-1px);}
  .btn-on-dark:active{transform:translateY(0) scale(.99);}
  .btn-outline-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.5);}
  .btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.10);transform:translateY(-1px);}
  .btn-sm{height:42px;padding:0 20px;font-size:14px;}

  /* ---------- 移动抽屉 ---------- */
  .drawer-mask{position:fixed;inset:0;background:rgba(11,11,13,.5);z-index:120;opacity:0;pointer-events:none;transition:opacity .3s var(--ease);}
  .drawer-mask.open{opacity:1;pointer-events:auto;}
  .drawer{position:fixed;top:0;right:0;z-index:130;height:100%;width:min(86vw,360px);background:var(--paper);box-shadow:var(--shadow-pop);transform:translateX(102%);transition:transform .32s var(--ease);padding:22px;overflow-y:auto;}
  .drawer.open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
  .drawer-nav{display:grid;gap:2px;border-top:1px solid var(--line);}
  .drawer-nav a{display:flex;align-items:center;min-height:52px;font-size:16px;font-weight:600;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line);}
  .drawer-nav a:hover{color:var(--brand);}
  .drawer-tip{margin-top:22px;font-size:13px;color:var(--muted);line-height:1.8;}
  .drawer-cta{margin-top:18px;width:100%;}
  @media (max-width:1023px){
    .main-nav{display:none;}
    .nav-tools .btn-primary{display:none;}
    .menu-btn{display:grid;}
  }
  @media (max-width:639px){
    .nav-inner{gap:14px;min-height:66px;}
    .brand-text{font-size:16px;}
    .icon-btn{width:38px;height:38px;}
  }

  /* ---------- 通用排版 ---------- */
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--brand);text-transform:uppercase;}
  .section-title{font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.2;font-weight:800;letter-spacing:-.02em;}
  .section-sub{font-size:14.5px;color:var(--muted);margin-top:10px;}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px;}
  .text-link{position:relative;display:inline-block;font-size:14.5px;font-weight:600;color:var(--ink);text-decoration:none;}
  .text-link::after{content:"";position:absolute;left:0;bottom:-4px;width:100%;height:1px;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease),background .24s var(--ease);}
  .text-link:hover{color:var(--brand);}
  .text-link:hover::after{transform:scaleX(1);background:var(--brand);}
  .text-link:focus-visible{outline:2px solid var(--brand);outline-offset:3px;}

  /* ---------- 面包屑与文章头 ---------- */
  .page-head{padding:26px 0 0;}
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);overflow:hidden;white-space:nowrap;}
  .breadcrumb a{color:var(--muted);text-decoration:none;transition:color .2s var(--ease);}
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .sep{color:var(--silver);}
  .breadcrumb .crumb-current{color:var(--ink);overflow:hidden;text-overflow:ellipsis;max-width:56vw;}

  .article-head{padding:22px 0 0;}
  .article-title{font-size:clamp(1.75rem,3.4vw,2.5rem);line-height:1.3;font-weight:800;letter-spacing:-.02em;margin:16px 0 18px;max-width:880px;}
  .meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;padding:18px 0 20px;border-bottom:1px solid var(--line);font-size:13.5px;color:var(--muted);}
  .meta-item{display:inline-flex;align-items:center;gap:6px;}
  .meta-item svg{width:15px;height:15px;}
  .badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:2px;font-size:11.5px;font-weight:700;letter-spacing:.06em;}
  .badge-brand{background:var(--brand);color:#fff;}
  .badge-ink{background:var(--ink);color:#fff;}
  .badge-soft{background:var(--brand-soft);color:var(--brand-deep);}
  .share-group{margin-left:auto;display:flex;gap:8px;}
  .share-btn{width:32px;height:32px;display:grid;place-items:center;background:transparent;border:1px solid var(--line);border-radius:4px;color:var(--muted);cursor:pointer;transition:border-color .2s var(--ease),color .2s var(--ease);}
  .share-btn:hover{border-color:var(--brand);color:var(--brand);}
  .share-btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
  .share-btn svg{width:16px;height:16px;}

  /* ---------- 文章布局 ---------- */
  .article-layout{display:grid;grid-template-columns:1fr;gap:48px;padding:38px 0 20px;}
  @media (min-width:1024px){
    .article-layout{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:56px;padding:52px 0 24px;}
  }
  .reading{max-width:760px;min-width:0;}

  .prose-cn{font-size:16.5px;line-height:1.95;color:#26262A;}
  .prose-cn > * + *{margin-top:1.4em;}
  .prose-cn p{margin:0;}
  .prose-cn h2{position:relative;font-size:clamp(1.25rem,2vw,1.5rem);font-weight:800;letter-spacing:-.02em;line-height:1.4;margin:2.4em 0 .8em;color:var(--ink);}
  .prose-cn h2::before{content:"";display:block;width:24px;height:3px;background:var(--brand);margin-bottom:.7em;}
  .prose-cn h3{font-size:1.0625rem;font-weight:700;margin:1.8em 0 .6em;color:var(--ink);}
  .prose-cn h4{font-size:1rem;font-weight:700;margin:1.5em 0 .5em;}
  .prose-cn a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
  .prose-cn a:hover{text-decoration-thickness:2px;}
  .prose-cn strong{font-weight:800;color:var(--ink);}
  .prose-cn ul,.prose-cn ol{margin:1.4em 0;display:grid;gap:.6em;}
  .prose-cn li{position:relative;padding-left:22px;}
  .prose-cn ul > li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;background:var(--brand);border-radius:2px;}
  .prose-cn ol{counter-reset:olcount;}
  .prose-cn ol > li{counter-increment:olcount;}
  .prose-cn ol > li::before{content:counter(olcount,decimal-leading-zero);position:absolute;left:0;top:0;font-size:13px;font-weight:800;color:var(--brand);letter-spacing:.02em;}
  .prose-cn blockquote{margin:1.8em 0;padding:20px 22px;background:var(--paper-2);border-left:3px solid var(--brand);border-radius:0 6px 6px 0;color:#3A3A3F;}
  .prose-cn blockquote p{margin:0;}
  .prose-cn img{border-radius:var(--r-img);margin:1.8em auto;}
  .prose-cn figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:.6em;}
  .prose-cn table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;font-size:14.5px;margin:1.8em 0;}
  .prose-cn th,.prose-cn td{border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap;}
  .prose-cn th{background:var(--paper-2);font-weight:700;color:var(--ink);}
  .prose-cn pre{background:var(--ink);color:var(--paper);border-radius:6px;padding:18px 20px;overflow-x:auto;font-size:13.5px;line-height:1.7;}
  .prose-cn code{background:var(--paper-2);border-radius:2px;padding:.12em .36em;font-size:.92em;}
  .prose-cn pre code{background:none;padding:0;color:inherit;}
  .prose-cn hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}

  .empty-state{border:1px solid var(--line);border-radius:var(--r-card);background:#fff;padding:52px 24px;text-align:center;}
  .empty-state svg{width:36px;height:36px;color:var(--silver);margin:0 auto 16px;}
  .empty-title{font-size:1.125rem;font-weight:800;color:var(--ink);}
  .empty-desc{font-size:14.5px;color:var(--muted);margin:10px 0 24px;}

  /* ---------- 侧栏 ---------- */
  .sidebar{display:flex;flex-direction:column;gap:22px;min-width:0;}
  @media (min-width:1024px){
    .sidebar{position:sticky;top:104px;align-self:start;}
  }
  .side-card{border:1px solid var(--line);border-radius:var(--r-card);background:#fff;padding:20px;}
  .side-card h2,.side-card h3{font-size:15px;font-weight:800;letter-spacing:-.01em;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
  .side-card h3::before{content:"";width:3px;height:14px;background:var(--brand);border-radius:2px;}
  .toc-link{display:block;padding:9px 0;font-size:14.5px;color:#3A3A3F;text-decoration:none;border-bottom:1px solid var(--line);transition:color .2s var(--ease),transform .2s var(--ease);}
  .toc-link:last-child{border-bottom:0;}
  .toc-link:hover{color:var(--brand);transform:translateX(2px);}
  .toc-empty{font-size:14px;color:var(--muted);}
  .side-list a{display:flex;align-items:baseline;gap:10px;padding:12px 0;font-size:14.5px;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line);transition:color .2s var(--ease),transform .2s var(--ease);}
  .side-list a:last-child{border-bottom:0;}
  .side-list a:hover{color:var(--brand);transform:translateX(2px);}
  .side-list .idx{font-size:12px;font-weight:800;color:var(--silver);letter-spacing:.04em;}
  .side-cta{background:var(--ink);color:var(--paper);border:0;border-radius:var(--r-card);padding:24px;}
  .side-cta h3{color:#fff;}
  .side-cta h3::before{background:var(--brand);}
  .side-cta p{font-size:13.5px;line-height:1.9;color:rgba(247,244,239,.72);}
  .side-cta .btn-primary{margin-top:18px;width:100%;}

  /* ---------- 文末区块 ---------- */
  .foot-block{background:var(--paper-2);border-top:1px solid var(--line);padding:56px 0 68px;margin-top:36px;}
  @media (min-width:1024px){.foot-block{padding:72px 0 88px;margin-top:48px;}}
  .tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:36px;}
  .tag{display:inline-flex;align-items:center;height:32px;padding:0 13px;background:#fff;border:1px solid var(--line);border-radius:2px;font-size:13px;color:#3A3A3F;text-decoration:none;transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);}
  .tag:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}

  .dual-grid{display:grid;gap:18px;grid-template-columns:1fr;margin-bottom:52px;}
  @media (min-width:768px){.dual-grid{grid-template-columns:1fr 1fr;}}
  .next-card{display:block;padding:22px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);text-decoration:none;transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);}
  .next-card:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:0 8px 20px rgba(11,11,13,.06);}
  .next-card .dir{font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--brand);}
  .next-card .ttl{display:block;margin-top:10px;font-size:17px;font-weight:700;line-height:1.5;color:var(--ink);}
  .next-card .sub{display:block;margin-top:8px;font-size:13.5px;color:var(--muted);}

  .rec-grid{display:grid;gap:20px;grid-template-columns:1fr;}
  @media (min-width:640px){.rec-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.rec-grid{grid-template-columns:repeat(3,1fr);}}
  .rec-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;text-decoration:none;transition:border-color .22s var(--ease),transform .22s var(--ease);}
  .rec-card:hover{border-color:var(--brand);transform:translateY(-2px);}
  .rec-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--paper-2);}
  .rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease);}
  .rec-card:hover .rec-thumb img{transform:scale(1.04);}
  .rec-body{padding:16px 18px 20px;}
  .rec-body .ttl{font-size:16.5px;font-weight:700;line-height:1.5;color:var(--ink);margin-top:10px;}
  .rec-meta{margin-top:12px;font-size:13px;color:var(--muted);}

  .back-row{margin-top:44px;display:flex;justify-content:center;}

  /* ---------- 深色通栏 ---------- */
  .band-dark{position:relative;background:var(--ink);color:var(--paper);overflow:hidden;}
  .band-dark::before{content:"";position:absolute;inset:0;background-image:url(/assets/images/backpic/back-2.png);background-size:cover;background-position:center;opacity:.08;}
  .band-dark .container{position:relative;z-index:1;}
  .cta-grid{display:grid;gap:26px;align-items:center;padding:64px 0;}
  @media (min-width:1024px){.cta-grid{grid-template-columns:1fr auto;padding:84px 0;gap:40px;}}
  .cta-title{font-size:clamp(1.4rem,2.6vw,2.1rem);font-weight:800;letter-spacing:-.02em;line-height:1.25;}
  .cta-sub{margin-top:12px;font-size:15px;color:rgba(247,244,239,.72);max-width:520px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

  /* ---------- FAQ ---------- */
  .faq-section{padding:64px 0 76px;}
  @media (min-width:1024px){.faq-section{padding:88px 0 104px;}}
  .faq-list{display:grid;gap:12px;max-width:920px;}
  .faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;}
  .faq-q{position:relative;width:100%;display:flex;align-items:center;gap:16px;min-height:56px;padding:16px 20px;background:none;border:0;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink);cursor:pointer;transition:color .2s var(--ease);}
  .faq-q:hover{color:var(--brand);}
  .faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:-2px;}
  .faq-item.open .faq-q::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:2px;background:var(--brand);}
  .faq-icon{margin-left:auto;flex:none;width:20px;height:20px;color:var(--muted);transition:transform .24s var(--ease),color .24s var(--ease);}
  .faq-item.open .faq-icon{transform:rotate(180deg);color:var(--brand);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
  .faq-item.open .faq-a{max-height:360px;}
  .faq-a p{padding:0 20px 20px;font-size:15.5px;line-height:1.9;color:#3A3A3F;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:rgba(247,244,239,.78);padding:60px 0 26px;}
  .footer-grid{display:grid;gap:34px;grid-template-columns:1fr;}
  @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 1.2fr;gap:40px;}}
  .site-footer .brand{color:#fff;}
  .site-footer .brand-text{color:#fff;}
  .footer-desc{margin-top:16px;font-size:13.5px;line-height:1.9;color:rgba(247,244,239,.66);max-width:280px;}
  .footer-social{display:flex;gap:10px;margin-top:20px;}
  .footer-social a{width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--line-dk);border-radius:4px;color:rgba(247,244,239,.75);text-decoration:none;transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);}
  .footer-social a:hover{border-color:var(--brand);color:#fff;background:rgba(200,16,46,.18);}
  .footer-social svg{width:18px;height:18px;}
  .footer-col h3{font-size:15px;font-weight:800;color:#fff;margin-bottom:16px;}
  .footer-col ul{display:grid;gap:11px;}
  .footer-col a{font-size:14px;color:rgba(247,244,239,.72);text-decoration:none;transition:color .2s var(--ease),padding-left .2s var(--ease);}
  .footer-col a:hover{color:#fff;padding-left:3px;}
  .footer-col p{font-size:13.5px;line-height:1.9;color:rgba(247,244,239,.68);margin-bottom:8px;}
  .footer-bottom{margin-top:46px;padding-top:20px;border-top:1px solid var(--line-dk);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(247,244,239,.55);}

  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
    .rec-card:hover,.next-card:hover,.btn-primary:hover,.btn-ghost:hover,.btn-on-dark:hover{transform:none !important;}
  }

/* roulang page: category1 */
:root{
    --ink:#0B0B0D; --ink-2:#17171A; --paper:#F7F4EF; --paper-2:#EFEAE2;
    --brand:#C8102E; --brand-deep:#8E0A20; --brand-soft:#F7DDE1;
    --line:rgba(11,11,13,.10); --line-dk:rgba(255,255,255,.14);
    --muted:#6E6E74; --silver:#B9BDC4;
    --r-card:6px; --r-btn:4px; --r-img:8px; --r-badge:2px;
    --shadow-pop:0 12px 32px rgba(11,11,13,.10);
    --shadow-brand:0 8px 20px rgba(200,16,46,.28);
    --shadow-card:0 10px 26px rgba(11,11,13,.08);
    --ease:cubic-bezier(.22,.61,.36,1);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;background:var(--paper);color:var(--ink);
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16.5px;line-height:1.88;letter-spacing:-.01em;
    font-variant-numeric:tabular-nums;-webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;height:auto}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.2;letter-spacing:-.02em}
  p{margin:0}
  ul{margin:0;padding:0;list-style:none}
  svg{display:block}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px}
  .container{width:100%;max-width:1280px;margin-inline:auto;padding-inline:20px}
  @media (min-width:768px){.container{padding-inline:24px}}
  @media (min-width:1024px){.container{padding-inline:32px}}

  /* ---------- 顶部信息条 ---------- */
  .topbar{background:var(--ink);color:rgba(247,244,239,.82);font-size:13px;line-height:1.6}
  .topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px}
  .topbar-tip{letter-spacing:.01em}
  .topbar-domain{color:rgba(247,244,239,.5);letter-spacing:.06em}
  .topbar-actions{display:flex;align-items:center;gap:20px}
  .topbar-actions a{color:rgba(247,244,239,.82);border-bottom:1px solid transparent;padding-bottom:1px;transition:color .2s var(--ease),border-color .2s var(--ease)}
  .topbar-actions a:hover{color:#fff;border-color:var(--brand)}

  /* ---------- 主导航 ---------- */
  .navbar{position:sticky;top:0;z-index:60;background:#F7F4EF;border-bottom:1px solid var(--line);transition:box-shadow .24s var(--ease)}
  .navbar.is-stuck{box-shadow:0 10px 24px rgba(11,11,13,.07)}
  .navbar-inner{display:flex;align-items:center;gap:24px;min-height:76px}
  .brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
  .brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:var(--r-btn);background:var(--brand);color:#fff;font-size:12.5px;font-weight:900;letter-spacing:.03em}
  .brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
  .main-nav{display:flex;align-items:center;gap:2px;flex:1;margin-left:6px}
  .nav-link{position:relative;padding:10px 14px;font-size:15.5px;font-weight:600;border-radius:var(--r-btn);transition:color .2s var(--ease),background-color .2s var(--ease)}
  .nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease)}
  .nav-link:hover{color:var(--brand);background:var(--paper-2)}
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.active{color:var(--brand)}
  .nav-link.active::after{transform:scaleX(1)}
  .nav-tools{display:flex;align-items:center;gap:6px;margin-left:auto}
  .icon-btn{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:var(--r-btn);border:1px solid transparent;color:var(--ink);transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
  .icon-btn:hover{background:var(--paper-2);border-color:var(--line);color:var(--brand)}
  .icon-btn svg{width:20px;height:20px;stroke-width:1.6}
  .cart-btn{position:relative}
  .cart-count{position:absolute;top:2px;right:0;min-width:17px;height:17px;padding:0 4px;border-radius:50%;background:var(--brand);color:#fff;font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;line-height:1}
  .nav-toggle{display:none}
  .nav-toggle svg{width:22px;height:22px;stroke-width:1.6}

  /* ---------- 按钮 ---------- */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:50px;padding:0 28px;border-radius:var(--r-btn);font-size:15.5px;font-weight:700;border:1.5px solid transparent;white-space:nowrap;transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
  .btn-primary{background:var(--brand);color:#fff}
  .btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-brand)}
  .btn-primary:active{transform:translateY(0) scale(.99)}
  .btn-ghost{border-color:var(--ink);color:var(--ink)}
  .btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px)}
  .btn-ghost:active{transform:translateY(0) scale(.99)}
  .btn-on-dark{background:var(--paper);color:var(--ink)}
  .btn-on-dark:hover{background:var(--brand);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-brand)}
  .btn-outline-light{border-color:rgba(255,255,255,.42);color:#fff}
  .btn-outline-light:hover{background:#fff;color:var(--ink);transform:translateY(-1px)}
  .btn-sm{height:38px;padding:0 18px;font-size:14px}

  /* ---------- 徽章 / 标签 ---------- */
  .badge{display:inline-flex;align-items:center;height:24px;padding:0 9px;border-radius:var(--r-badge);font-size:11.5px;font-weight:700;letter-spacing:.06em;white-space:nowrap}
  .badge-brand{background:var(--brand);color:#fff}
  .badge-ink{background:var(--ink);color:#fff}
  .badge-soft{background:var(--brand-soft);color:var(--brand-deep)}
  .text-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;border-bottom:1px solid transparent;padding-bottom:2px;transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease)}
  .text-link:hover{color:var(--brand);border-color:var(--brand);transform:translateX(2px)}
  .text-link svg{width:15px;height:15px;stroke-width:1.8}

  /* ---------- 页面节奏 ---------- */
  .section{padding:96px 0}
  @media (max-width:1023px){.section{padding:80px 0}}
  @media (max-width:639px){.section{padding:58px 0}}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px}
  @media (max-width:767px){.section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}}
  .section-title{font-size:clamp(1.5rem,2.6vw,2.25rem)}
  .section-desc{margin-top:14px;max-width:660px;color:var(--muted);font-size:16px}
  .eyebrow{font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--brand);text-transform:uppercase}

  /* ---------- 页头 ---------- */
  .page-hero{position:relative;overflow:hidden;padding:52px 0 68px;border-bottom:1px solid var(--line)}
  .page-hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.08;pointer-events:none}
  .page-hero .container{position:relative;z-index:1}
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:24px;flex-wrap:wrap}
  .breadcrumb a{transition:color .2s var(--ease)}
  .breadcrumb a:hover{color:var(--brand)}
  .breadcrumb .sep{color:var(--silver)}
  .breadcrumb [aria-current]{color:var(--ink);font-weight:600}
  .hero-title{font-size:clamp(1.8rem,3.6vw,2.75rem);margin-top:18px}
  .hero-sub{margin-top:16px;max-width:620px;font-size:16.5px;color:#3A3A40}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

  /* ---------- 图文 + 参数 ---------- */
  .media-block{display:grid;grid-template-columns:1.1fr 1fr;gap:56px;align-items:center}
  @media (max-width:1023px){.media-block{grid-template-columns:1fr;gap:34px}}
  .media-figure{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);background:var(--paper-2)}
  .media-figure img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .6s var(--ease)}
  .media-figure:hover img{transform:scale(1.04)}
  .spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;margin-top:28px}
  @media (max-width:639px){.spec-grid{grid-template-columns:repeat(2,1fr)}}
  .spec-item{background:#fff;padding:20px 18px}
  .spec-label{font-size:12.5px;color:var(--muted);letter-spacing:.04em}
  .spec-value{margin-top:7px;font-size:16.5px;font-weight:800;line-height:1.45}

  /* ---------- 卡片 ---------- */
  .card-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
  @media (max-width:767px){.card-grid-2{grid-template-columns:1fr}}
  .card-goods{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)}
  .card-goods:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--shadow-card)}
  .card-media{position:relative;background:var(--paper-2);overflow:hidden}
  .card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .6s var(--ease)}
  .card-goods:hover .card-media img{transform:scale(1.04)}
  .card-media .badge{position:absolute;top:12px;left:12px}
  .card-body{padding:24px 24px 28px;display:flex;flex-direction:column;gap:12px;flex:1}
  .card-title{font-size:18px;font-weight:800}
  .card-desc{color:var(--muted);font-size:15px;line-height:1.85}
  .card-foot{margin-top:auto;padding-top:6px}

  /* ---------- 深色保障带 ---------- */
  .band-dark{position:relative;background:var(--ink);color:var(--paper);overflow:hidden}
  .band-dark::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.webp');background-size:cover;background-position:center;opacity:.10;pointer-events:none}
  .band-dark .container{position:relative;z-index:1}
  .band-grid{display:grid;grid-template-columns:repeat(4,1fr);padding:56px 0}
  .band-item{padding:0 26px;border-left:1px solid var(--line-dk)}
  .band-item:first-child{border-left:0;padding-left:0}
  .band-item:last-child{padding-right:0}
  .band-icon{width:26px;height:26px;stroke-width:1.5;color:var(--brand-soft)}
  .band-title{margin-top:16px;font-size:16px;font-weight:800;color:#fff}
  .band-text{margin-top:8px;font-size:13.5px;line-height:1.75;color:rgba(247,244,239,.68)}
  @media (max-width:900px){
    .band-grid{grid-template-columns:repeat(2,1fr);gap:0;padding:44px 0}
    .band-item{padding:20px 22px}
    .band-item:nth-child(odd){border-left:0;padding-left:0}
    .band-item:nth-child(3),.band-item:nth-child(4){border-top:1px solid var(--line-dk)}
  }
  @media (max-width:639px){
    .band-grid{grid-template-columns:1fr;padding:36px 0}
    .band-item{padding:18px 0;border-left:0}
    .band-item + .band-item{border-top:1px solid var(--line-dk)}
  }

  /* ---------- FAQ ---------- */
  .faq-list{display:grid;gap:12px;max-width:920px}
  .faq-item{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:border-color .24s var(--ease)}
  .faq-item.open{border-color:rgba(200,16,46,.35)}
  .faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--brand);opacity:0;transition:opacity .24s var(--ease)}
  .faq-item.open::before{opacity:1}
  .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:58px;padding:16px 22px;text-align:left;font-size:16.5px;font-weight:600;line-height:1.6}
  .faq-q:hover{color:var(--brand)}
  .faq-q .chev{flex-shrink:0;width:20px;height:20px;color:var(--muted);transition:transform .24s var(--ease),color .24s var(--ease)}
  .faq-item.open .chev{transform:rotate(180deg);color:var(--brand)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
  .faq-a-inner{padding:0 22px 22px;color:#4A4A50;font-size:15.5px;line-height:1.9}

  /* ---------- CTA 通栏 ---------- */
  .cta-band{position:relative;background:var(--ink);color:var(--paper);overflow:hidden}
  .cta-band::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.10;pointer-events:none}
  .cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.5fr 1fr;gap:40px;align-items:center;padding:72px 0}
  .cta-title{font-size:clamp(1.5rem,2.6vw,2.1rem);color:#fff}
  .cta-text{margin-top:14px;color:rgba(247,244,239,.72);font-size:16px;max-width:620px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
  @media (max-width:900px){
    .cta-inner{grid-template-columns:1fr;gap:26px;padding:56px 0}
    .cta-actions{justify-content:flex-start}
  }

  /* ---------- 资讯入口条 ---------- */
  .news-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
  .news-item{display:block;background:#fff;padding:26px 24px;transition:background-color .2s var(--ease)}
  .news-item:hover{background:var(--paper-2)}
  .news-cat{font-size:12.5px;letter-spacing:.06em;color:var(--brand);font-weight:700}
  .news-title{margin-top:10px;font-size:16.5px;font-weight:700;line-height:1.55;transition:color .2s var(--ease),transform .2s var(--ease)}
  .news-item:hover .news-title{color:var(--brand);transform:translateX(2px)}
  .news-time{margin-top:12px;font-size:13px;color:var(--muted)}
  @media (max-width:767px){.news-strip{grid-template-columns:1fr}}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:rgba(247,244,239,.72);padding-top:76px;font-size:14.5px}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:56px}
  .site-footer .brand-text{color:var(--paper)}
  .site-footer .brand:hover .brand-text{color:#fff}
  .footer-desc{margin-top:18px;max-width:300px;line-height:1.85}
  .footer-social{display:flex;gap:12px;margin-top:22px}
  .footer-social a{width:38px;height:38px;border-radius:var(--r-btn);border:1px solid var(--line-dk);display:inline-flex;align-items:center;justify-content:center;color:var(--paper);transition:background-color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease)}
  .footer-social a:hover{background:var(--brand);border-color:var(--brand);transform:translateY(-2px)}
  .footer-social svg{width:18px;height:18px;stroke-width:1.5}
  .footer-col h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:0}
  .footer-col li{margin-bottom:12px}
  .footer-col p{margin-bottom:10px;line-height:1.8}
  .footer-col a{color:rgba(247,244,239,.72);transition:color .2s var(--ease)}
  .footer-col a:hover{color:var(--brand-soft)}
  .footer-bottom{border-top:1px solid var(--line-dk);padding:22px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(247,244,239,.5)}
  @media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:36px}}
  @media (max-width:639px){.footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:40px}.site-footer{padding-top:56px}}

  /* ---------- 移动抽屉 ---------- */
  .drawer{position:fixed;inset:0;z-index:90;pointer-events:none}
  .drawer-mask{position:absolute;inset:0;background:rgba(11,11,13,.5);opacity:0;transition:opacity .24s var(--ease)}
  .drawer-panel{position:absolute;top:0;right:0;height:100%;width:min(86vw,360px);background:var(--paper);padding:22px;overflow-y:auto;transform:translateX(100%);transition:transform .28s var(--ease);box-shadow:var(--shadow-pop);display:flex;flex-direction:column;gap:8px}
  .drawer.open{pointer-events:auto}
  .drawer.open .drawer-mask{opacity:1}
  .drawer.open .drawer-panel{transform:none}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:10px}
  .drawer-link{display:flex;align-items:center;justify-content:space-between;min-height:52px;padding:0 4px;font-size:16px;font-weight:600;border-bottom:1px solid var(--line);transition:color .2s var(--ease),transform .2s var(--ease)}
  .drawer-link:hover,.drawer-link.active{color:var(--brand);transform:translateX(2px)}
  .drawer-note{margin-top:18px;font-size:13px;color:var(--muted);line-height:1.8}
  body.no-scroll{overflow:hidden}

  /* ---------- 入场动效 ---------- */
  .js-on .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
  .js-on .reveal.is-in{opacity:1;transform:none}
  @media (prefers-reduced-motion:reduce){
    .js-on .reveal{opacity:1;transform:none;transition:none}
    *{scroll-behavior:auto!important;transition-duration:.01ms!important}
  }

  @media (max-width:900px){
    .main-nav{display:none}
    .nav-toggle{display:inline-flex}
    .navbar-inner{min-height:68px;gap:16px}
  }
  @media (max-width:640px){
    .topbar-domain{display:none}
    .topbar-actions a:first-child{display:none}
    .hero-actions .btn{width:100%}
  }
  @media (max-width:520px){
    .brand-text{display:none}
  }

/* roulang page: category2 */
:root{
  --ink:#0B0B0D;
  --ink-2:#17171A;
  --paper:#F7F4EF;
  --paper-2:#EFEAE2;
  --brand:#C8102E;
  --brand-deep:#8E0A20;
  --brand-soft:#F7DDE1;
  --line:rgba(11,11,13,.10);
  --line-dk:rgba(255,255,255,.14);
  --muted:#6E6E74;
  --silver:#B9BDC4;
  --r-card:6px;
  --r-btn:4px;
  --r-img:8px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow-float:0 12px 32px rgba(11,11,13,.10);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3{letter-spacing:-.02em;font-weight:800;line-height:1.25}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- 顶部信息条 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--paper);border-bottom:1px solid var(--line);transition:box-shadow .24s var(--ease)}
.site-header.is-scrolled{box-shadow:0 10px 24px rgba(11,11,13,.07)}
.topbar{background:var(--ink);color:rgba(247,244,239,.80);font-size:13px;line-height:1.6}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px}
.topbar-note{display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
.topbar-dot{width:6px;height:6px;border-radius:50%;background:var(--brand);flex:none}
.topbar-domain{color:var(--silver);letter-spacing:.06em;white-space:nowrap}
.topbar-actions{display:flex;align-items:center;gap:22px;white-space:nowrap}
.topbar-actions a{position:relative;transition:color .18s}
.topbar-actions a:hover{color:#fff}
.topbar-actions a::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease)}
.topbar-actions a:hover::after{transform:scaleX(1)}
@media (max-width:767px){
  .topbar-domain{display:none}
  .topbar-actions a:first-child{display:none}
}

/* ---------- 主导航 ---------- */
.nav-inner{display:flex;align-items:center;gap:20px;min-height:76px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  display:grid;place-items:center;width:38px;height:38px;border-radius:4px;
  background:var(--brand);color:#fff;font-size:12px;font-weight:800;letter-spacing:.04em;
}
.brand-text{font-size:18px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.brand:hover .brand-mark{background:var(--brand-deep)}
.brand:focus-visible{outline:2px solid var(--brand);outline-offset:4px;border-radius:4px}

.main-nav{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{position:relative;font-size:15px;font-weight:600;color:#3B3B40;padding:6px 0;transition:color .18s}
.nav-link::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--brand);transition:right .24s var(--ease)}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{right:0}
.nav-link.active{color:var(--ink)}
.nav-link.active::after{right:0}

.nav-tools{display:flex;align-items:center;gap:10px;flex:none}
.icon-btn{
  position:relative;display:grid;place-items:center;width:40px;height:40px;border-radius:4px;
  border:1px solid var(--line);color:#3B3B40;background:transparent;
  transition:border-color .2s,color .2s,transform .2s var(--ease);
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.icon-btn svg{width:19px;height:19px}
.cart-count{
  position:absolute;top:-6px;right:-6px;min-width:17px;height:17px;padding:0 4px;
  display:grid;place-items:center;border-radius:50%;background:var(--brand);color:#fff;
  font-size:10.5px;font-weight:700;line-height:1;
}
.nav-cta{height:44px;padding:0 22px;font-size:14.5px}
.menu-toggle{display:none;width:44px;height:44px;border-radius:4px;border:1px solid var(--line);place-items:center;color:var(--ink)}
.menu-toggle svg{width:20px;height:20px}
.menu-toggle:hover{border-color:var(--brand);color:var(--brand)}

@media (max-width:1023px){
  .main-nav{display:none}
  .menu-toggle{display:grid}
  .nav-cta{display:none}
}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,11,13,.5);z-index:70;
  opacity:0;pointer-events:none;transition:opacity .26s var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(86vw,360px);z-index:80;
  background:var(--paper);padding:22px 22px 40px;overflow-y:auto;
  transform:translateX(100%);transition:transform .28s var(--ease);
  box-shadow:var(--shadow-float);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-title{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--muted)}
.drawer-close{width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--line);border-radius:4px}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer-close svg{width:18px;height:18px}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 2px;border-bottom:1px solid var(--line);font-size:16px;font-weight:600;
  transition:color .18s,padding-left .18s var(--ease);
}
.drawer-link:hover{color:var(--brand);padding-left:6px}
.drawer-link.active{color:var(--brand)}
.drawer-cta{margin-top:24px;width:100%}
.drawer-info{margin-top:28px;font-size:13px;color:var(--muted);line-height:1.8}

/* ---------- 按钮 / 标签 / 文字链 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 28px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:transform .2s var(--ease),background-color .2s,color .2s,border-color .2s,box-shadow .2s;
}
.btn-primary{background:var(--brand);color:#FFF6F4}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 8px 20px rgba(200,16,46,.28)}
.btn-primary:active{transform:translateY(0) scale(.99);box-shadow:none}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0) scale(.99)}
.btn-on-dark{background:var(--paper);color:var(--ink)}
.btn-on-dark:hover{background:var(--brand);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(200,16,46,.32)}
.btn-ghost-light{background:transparent;color:var(--paper);border:1.5px solid rgba(247,244,239,.45)}
.btn-ghost-light:hover{border-color:var(--paper);background:rgba(247,244,239,.10);transform:translateY(-1px)}

.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:2px;
  font-size:11.5px;font-weight:700;letter-spacing:.06em;line-height:1;
}
.badge-brand{background:var(--brand);color:#fff}
.badge-ink{background:var(--ink);color:var(--paper)}
.badge-soft{background:var(--brand-soft);color:var(--brand-deep)}

.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:2px;
  background:var(--brand-soft);color:var(--brand-deep);font-size:12.5px;font-weight:700;letter-spacing:.04em;
}

.text-link{position:relative;display:inline-block;font-size:14px;font-weight:700;color:var(--ink);padding-bottom:4px}
.text-link::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--brand);transition:width .26s var(--ease)}
.text-link:hover{color:var(--brand)}
.text-link:hover::after{width:100%}

/* ---------- 分类页头 ---------- */
.cat-hero{position:relative;background:var(--ink);color:var(--paper);overflow:hidden;padding:56px 0 64px}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.10;
}
.cat-hero > .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--silver);margin-bottom:26px;flex-wrap:wrap}
.breadcrumb a{transition:color .18s;border-bottom:1px solid transparent}
.breadcrumb a:hover{color:#fff;border-bottom-color:var(--brand)}
.breadcrumb .sep{color:rgba(247,244,239,.32)}
.cat-hero .badge{margin-bottom:18px}
.cat-hero h1{font-size:clamp(1.85rem,3.7vw,2.9rem);line-height:1.22;max-width:20em}
.hero-lead{margin-top:18px;font-size:clamp(15px,1.4vw,17px);line-height:1.85;color:rgba(247,244,239,.76);max-width:46em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
@media (max-width:639px){
  .cat-hero{padding:40px 0 48px}
  .hero-actions .btn{flex:1 1 auto;padding:0 20px}
}

/* ---------- 数据条 ---------- */
.stat-band{border-bottom:1px solid var(--line);background:var(--paper)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat-item{padding:34px 26px;border-left:1px solid var(--line)}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-num{display:block;font-size:32px;font-weight:800;line-height:1.1;letter-spacing:-.03em;color:var(--ink)}
.stat-num small{font-size:15px;font-weight:700;margin-left:3px;color:var(--muted)}
.stat-label{display:block;margin-top:8px;font-size:14px;color:var(--muted);line-height:1.7}
@media (max-width:1023px){
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat-item{padding:26px 20px;border-left:1px solid var(--line)}
  .stat-item:nth-child(odd){border-left:0;padding-left:0}
  .stat-item:nth-child(n+3){border-top:1px solid var(--line)}
}
@media (max-width:519px){
  .stat-num{font-size:26px}
  .stat-item{padding:22px 16px}
}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0}
@media (min-width:768px){.section{padding:88px 0}}
@media (min-width:1024px){.section{padding:104px 0}}
.section-soft{background:var(--paper-2)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.section-kicker{display:block;font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--brand);margin-bottom:12px}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.2}
.section-head p{margin-top:12px;color:var(--muted);font-size:15px;max-width:52em}

/* ---------- 交替图文 ---------- */
.alt-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:44px 0;border-top:1px solid var(--line);
}
.alt-row:first-of-type{border-top:0;padding-top:0}
.alt-row:last-of-type{padding-bottom:0}
.alt-row.reverse .alt-media{order:2}
.alt-media{border-radius:var(--r-img);overflow:hidden;aspect-ratio:3/2;background:var(--paper-2)}
.alt-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.alt-row:hover .alt-media img{transform:scale(1.04)}
.alt-body h3{font-size:clamp(1.22rem,1.9vw,1.6rem);margin:14px 0 14px;line-height:1.36}
.alt-body p{color:#3B3B40;line-height:1.9;margin-bottom:18px}
.check-list{list-style:none}
.check-list li{position:relative;padding-left:22px;margin-bottom:10px;font-size:15px;color:#3B3B40;line-height:1.75}
.check-list li::before{content:"";position:absolute;left:0;top:.66em;width:8px;height:8px;border-radius:1px;background:var(--brand)}
@media (max-width:1023px){
  .alt-row{grid-template-columns:1fr;gap:28px;padding:36px 0}
  .alt-row.reverse .alt-media{order:0}
}

/* ---------- 深色通栏 ---------- */
.band-dark{position:relative;background:var(--ink);color:var(--paper);padding:72px 0;overflow:hidden}
.band-dark::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  opacity:.10;
}
.band-dark > .container{position:relative;z-index:1}
.band-head{max-width:44em;margin-bottom:48px}
.band-head h2{font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.22}
.band-head p{margin-top:14px;color:rgba(247,244,239,.68);font-size:15.5px}
.step-list{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line-dk)}
.step-item{padding:34px 30px 6px;border-left:1px solid var(--line-dk)}
.step-item:first-child{border-left:0;padding-left:0}
.step-num{
  display:block;font-size:56px;font-weight:900;line-height:1;
  color:rgba(247,244,239,.16);letter-spacing:-.04em;margin-bottom:18px;
}
.step-item h3{font-size:18px;margin-bottom:12px;color:#fff}
.step-item p{font-size:15px;line-height:1.85;color:rgba(247,244,239,.70)}
@media (max-width:1023px){
  .band-dark{padding:56px 0}
  .step-list{grid-template-columns:1fr;border-top:1px solid var(--line-dk)}
  .step-item{border-left:0;border-top:1px solid var(--line-dk);padding:26px 0 4px}
  .step-item:first-child{border-top:0;padding-top:0}
  .step-num{font-size:44px}
}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:0.8fr 1.2fr;gap:56px;align-items:start}
.faq-aside h2{font-size:clamp(1.5rem,2.4vw,2.1rem);line-height:1.24}
.faq-aside p{margin-top:16px;color:var(--muted);font-size:15px;line-height:1.85}
.faq-list{display:grid;gap:14px}
.faq-item{border:1px solid var(--line);border-radius:var(--r-card);background:#fff;overflow:hidden;transition:border-color .22s}
.faq-item:hover{border-color:rgba(200,16,46,.4)}
.faq-item.is-open{border-color:var(--brand)}
.faq-q{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:18px;
  width:100%;min-height:58px;padding:16px 20px 16px 22px;text-align:left;
  font-size:16.5px;font-weight:600;line-height:1.6;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:50%;width:2px;height:0;background:var(--brand);
  transform:translateY(-50%);transition:height .24s var(--ease);
}
.faq-item.is-open .faq-q::before{height:62%}
.faq-icon{flex:none;width:20px;height:20px;color:var(--muted);transition:transform .28s var(--ease),color .2s}
.faq-item.is-open .faq-icon{transform:rotate(180deg);color:var(--brand)}
.faq-a{padding:0 22px 22px;animation:fadeIn .22s var(--ease)}
.faq-a p{color:#3B3B40;font-size:15.5px;line-height:1.9}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
@media (max-width:1023px){
  .faq-wrap{grid-template-columns:1fr;gap:32px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* ---------- 表单 ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:64px;align-items:start}
.form-intro h2{font-size:clamp(1.5rem,2.4vw,2.1rem);line-height:1.24}
.form-intro p{margin-top:16px;color:#3B3B40;font-size:15.5px;line-height:1.9}
.plain-list{list-style:none;margin-top:22px}
.plain-list li{position:relative;padding-left:22px;margin-bottom:10px;font-size:15px;color:#3B3B40}
.plain-list li::before{content:"";position:absolute;left:0;top:.7em;width:8px;height:8px;border-radius:1px;background:var(--brand)}
.sub-form{
  display:grid;gap:30px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-img);padding:34px 30px;
}
.field{position:relative;padding-top:24px}
.field-input{
  width:100%;height:52px;padding:0;border:0;border-bottom:1px solid var(--line);
  border-radius:0;background:transparent;font-size:16px;color:var(--ink);
  transition:border-color .2s,border-width .2s;
}
.field-input:focus{outline:none;border-bottom:2px solid var(--brand)}
.field-label{
  position:absolute;left:0;bottom:16px;font-size:16px;color:var(--muted);
  pointer-events:none;transform-origin:left bottom;
  transition:transform .18s var(--ease),color .18s;
}
.field-input:focus ~ .field-label,
.field-input:not(:placeholder-shown) ~ .field-label{
  transform:translateY(-30px) scale(.78);color:var(--brand);
}
.field-error{margin-top:10px;font-size:13.5px;color:var(--brand);line-height:1.6}
.field.is-error .field-input{border-bottom:2px solid var(--brand)}
.field.is-error .field-label{color:var(--brand)}
.form-submit{width:100%;margin-top:2px}
.form-note{font-size:13px;color:var(--muted);line-height:1.8}
.form-success{
  padding:14px 16px;border-radius:var(--r-card);background:var(--brand-soft);
  color:var(--brand-deep);font-size:14.5px;font-weight:600;
}
@media (max-width:1023px){
  .form-grid{grid-template-columns:1fr;gap:34px}
  .sub-form{padding:26px 20px}
}

/* ---------- 资讯区块 ---------- */
.news-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:48px;align-items:start}
.news-feature{border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:#fff;transition:transform .24s var(--ease),border-color .24s}
.news-feature:hover{transform:translateY(-2px);border-color:var(--brand)}
.news-feature-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--paper-2)}
.news-feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.news-feature:hover .news-feature-media img{transform:scale(1.04)}
.news-feature-media .badge{position:absolute;left:14px;top:14px}
.news-feature-body{padding:24px 24px 26px}
.news-feature-body h3{font-size:19px;line-height:1.45;margin-bottom:12px;transition:color .2s}
.news-feature:hover .news-feature-body h3{color:var(--brand)}
.news-feature-body p{font-size:15px;color:#3B3B40;line-height:1.85}
.news-meta{display:flex;flex-wrap:wrap;gap:14px;margin-top:18px;font-size:13px;color:var(--muted)}
.news-list{list-style:none;border-top:1px solid var(--line)}
.news-list li{border-bottom:1px solid var(--line)}
.news-list a{display:block;padding:20px 4px;transition:background-color .2s,padding-left .2s var(--ease)}
.news-list a:hover{background:var(--paper-2);padding-left:8px}
.news-list .cat{display:block;font-size:12.5px;font-weight:700;letter-spacing:.06em;color:var(--brand);margin-bottom:8px}
.news-list .title{display:block;font-size:16.5px;font-weight:600;line-height:1.55;transition:color .2s}
.news-list a:hover .title{color:var(--brand)}
.news-list time{display:block;margin-top:10px;font-size:13px;color:var(--muted)}
@media (max-width:1023px){
  .news-grid{grid-template-columns:1fr;gap:28px}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(247,244,239,.72);padding:64px 0 26px;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-text{color:#fff}
.footer-desc{font-size:14.5px;line-height:1.85;color:rgba(247,244,239,.66);max-width:24em}
.footer-social{display:flex;gap:10px;margin-top:22px}
.footer-social a{
  display:grid;place-items:center;width:36px;height:36px;border-radius:4px;
  border:1px solid var(--line-dk);color:rgba(247,244,239,.72);
  transition:border-color .2s,color .2s,transform .2s var(--ease);
}
.footer-social a:hover{border-color:var(--brand);color:#fff;transform:translateY(-2px)}
.footer-social svg{width:18px;height:18px;stroke-width:1.6}
.footer-col h3{font-size:13px;font-weight:700;letter-spacing:.1em;color:#fff;margin-bottom:18px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:11px}
.footer-col a{position:relative;transition:color .2s,padding-left .2s var(--ease)}
.footer-col a:hover{color:#fff;padding-left:5px}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(247,244,239,.66);margin-bottom:8px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line-dk);
  font-size:13px;color:var(--silver);
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:639px){
  .site-footer{padding:48px 0 22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}