/* roulang page: index */
:root{
      --primary:#246BFE;
      --primary-2:#2F6FED;
      --accent:#16B8C7;
      --accent-2:#20B7A8;
      --text:#102033;
      --text-2:#526274;
      --muted:#8A96A8;
      --bg:#F6F9FD;
      --bg-soft:#EEF6FF;
      --bg-cyan:#EEF9FB;
      --card:#FFFFFF;
      --border:#E5ECF5;
      --border-strong:rgba(36,107,254,.22);
      --shadow:0 16px 40px rgba(38,91,160,.08);
      --shadow-hover:0 22px 56px rgba(38,91,160,.14);
      --radius-lg:24px;
      --radius-md:20px;
      --radius-sm:14px;
      --nav-height:76px;
      --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:var(--font);
      color:var(--text);
      background:
        radial-gradient(circle at 8% 6%, rgba(36,107,254,.08), transparent 28%),
        radial-gradient(circle at 88% 12%, rgba(22,184,199,.12), transparent 26%),
        var(--bg);
      line-height:1.75;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,transform .2s ease}
    img{max-width:100%;display:block}
    button,input,textarea,select{font-family:inherit}
    ::selection{background:rgba(36,107,254,.18);color:var(--text)}
    .site-shell{position:relative}
    .container{max-width:1200px}
    .section{padding:96px 0}
    .section-tight{padding:68px 0}
    .section-head{max-width:760px;margin-bottom:34px}
    .section-kicker{
      display:inline-flex;align-items:center;gap:8px;
      padding:7px 12px;border-radius:999px;
      color:var(--primary);background:rgba(36,107,254,.08);
      border:1px solid rgba(36,107,254,.12);
      font-size:14px;font-weight:700;margin-bottom:14px;
    }
    .section-title{font-size:38px;line-height:1.2;font-weight:800;letter-spacing:-.8px;margin:0 0 14px}
    .section-desc{font-size:17px;color:var(--text-2);margin:0;max-width:680px}
    .site-header{
      position:sticky;top:0;z-index:1000;
      background:rgba(255,255,255,.94);
      border-bottom:1px solid var(--border);
      box-shadow:0 10px 30px rgba(15,35,75,.04);
    }
    .navbar{min-height:var(--nav-height);padding:12px 0}
    .brand-logo{
      display:inline-flex;align-items:center;gap:10px;font-weight:800;
      font-size:21px;letter-spacing:-.3px;color:var(--text);
      white-space:nowrap;
    }
    .brand-mark{
      width:38px;height:38px;border-radius:14px;
      display:inline-flex;align-items:center;justify-content:center;
      color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 12px 24px rgba(36,107,254,.18);
      position:relative;overflow:hidden;
    }
    .brand-mark:before{
      content:"";position:absolute;width:18px;height:18px;border:2px solid rgba(255,255,255,.75);
      border-radius:8px;transform:rotate(18deg);right:5px;top:5px;
    }
    .brand-mark span{position:relative;font-size:18px;line-height:1}
    .navbar-toggler{
      border:1px solid var(--border);border-radius:14px;padding:9px 11px;background:#fff;
      box-shadow:none!important;
    }
    .navbar-toggler:focus-visible{outline:3px solid rgba(36,107,254,.22)}
    .navbar-nav{gap:8px}
    .nav-link{
      color:var(--text-2);font-weight:700;font-size:15px;
      padding:9px 14px!important;border-radius:999px;
    }
    .nav-link:hover,.nav-link:focus{color:var(--primary);background:#F2F7FF}
    .nav-link.active{color:var(--primary);background:rgba(36,107,254,.1)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .nav-search{
      width:246px;height:42px;border-radius:999px;border:1px solid var(--border);
      background:#F8FBFF;display:flex;align-items:center;gap:8px;padding:0 14px;color:var(--muted);
      transition:border .2s ease,box-shadow .2s ease,background .2s ease;
    }
    .nav-search:focus-within{border-color:rgba(36,107,254,.42);box-shadow:0 0 0 4px rgba(36,107,254,.08);background:#fff}
    .nav-search input{border:0;background:transparent;outline:0;width:100%;font-size:14px;color:var(--text)}
    .nav-search .search-dot{width:10px;height:10px;border:2px solid var(--primary);border-radius:50%;position:relative;flex:0 0 auto}
    .nav-search .search-dot:after{content:"";position:absolute;width:6px;height:2px;background:var(--primary);right:-5px;bottom:-3px;transform:rotate(45deg);border-radius:2px}
    .btn-k{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      min-height:44px;padding:11px 20px;border-radius:999px;
      border:1px solid transparent;font-weight:800;font-size:15px;line-height:1.2;
      transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border .2s ease;
      cursor:pointer;white-space:nowrap;
    }
    .btn-k-primary{
      color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 14px 26px rgba(36,107,254,.2);
    }
    .btn-k-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 34px rgba(36,107,254,.28)}
    .btn-k-secondary{
      color:var(--primary);background:#fff;border-color:rgba(36,107,254,.18);
      box-shadow:0 8px 20px rgba(38,91,160,.05);
    }
    .btn-k-secondary:hover{color:var(--primary);background:#EEF6FF;border-color:rgba(36,107,254,.28);transform:translateY(-2px)}
    .btn-k:focus-visible,.text-arrow:focus-visible,.filter-pill:focus-visible,input:focus-visible,textarea:focus-visible{
      outline:3px solid rgba(36,107,254,.22);outline-offset:2px;
    }
    .text-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:800;font-size:15px}
    .text-arrow span{transition:transform .2s ease}
    .text-arrow:hover{color:#1659de}
    .text-arrow:hover span{transform:translateX(4px)}
    .hero{
      padding:106px 0 72px;
      position:relative;overflow:hidden;
    }
    .hero:before{
      content:"";position:absolute;inset:0;z-index:-2;
      background-image:
        linear-gradient(rgba(36,107,254,.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(36,107,254,.04) 1px, transparent 1px);
      background-size:34px 34px;
      mask-image:linear-gradient(to bottom,rgba(0,0,0,.72),transparent 88%);
    }
    .hero-media-bg{
      position:absolute;right:0;top:34px;width:42vw;height:560px;z-index:-1;border-radius:40px 0 0 40px;
      background:linear-gradient(90deg,rgba(246,249,253,.92),rgba(246,249,253,.36)),url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      opacity:.72;
    }
    .hero-badge{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 14px;border-radius:999px;background:#fff;border:1px solid var(--border);
      color:var(--primary);font-weight:800;font-size:14px;box-shadow:var(--shadow);margin-bottom:20px;
    }
    .pulse{
      width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 6px rgba(22,184,199,.14);
    }
    .hero h1{
      font-size:52px;line-height:1.14;font-weight:850;letter-spacing:-1.5px;margin:0 0 22px;
    }
    .hero h1 .grad{
      color:var(--primary);
      background:linear-gradient(135deg,var(--primary),var(--accent));
      -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
    }
    .hero-lead{font-size:18px;color:var(--text-2);max-width:600px;margin:0 0 28px}
    .hero-cta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:28px}
    .trust-row{display:flex;gap:12px;flex-wrap:wrap}
    .trust-item{
      display:inline-flex;align-items:center;gap:8px;padding:9px 12px;border-radius:999px;
      background:rgba(255,255,255,.76);border:1px solid var(--border);color:var(--text-2);font-weight:700;font-size:14px;
    }
    .trust-item i{width:8px;height:8px;border-radius:50%;background:var(--primary);display:inline-block}
    .dashboard{
      border:1px solid rgba(223,232,244,.92);border-radius:30px;background:rgba(255,255,255,.96);
      box-shadow:0 26px 70px rgba(38,91,160,.14);padding:22px;position:relative;overflow:hidden;
    }
    .dashboard:before{
      content:"";position:absolute;right:-80px;top:-80px;width:220px;height:220px;
      background:radial-gradient(circle,rgba(22,184,199,.14),transparent 65%);border-radius:50%;
    }
    .dash-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;position:relative}
    .dash-search{
      flex:1;height:48px;border-radius:999px;background:#F6F9FD;border:1px solid var(--border);
      display:flex;align-items:center;padding:0 16px;color:var(--muted);font-size:14px;font-weight:700;
    }
    .dash-status{padding:8px 12px;border-radius:999px;background:rgba(22,184,199,.1);color:#0E8995;font-weight:800;font-size:13px}
    .dash-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px;position:relative}
    .dash-panel{
      border-radius:22px;border:1px solid var(--border);background:#fff;padding:18px;box-shadow:0 12px 26px rgba(38,91,160,.06);
    }
    .channel-card{
      min-height:178px;background:
        linear-gradient(180deg,rgba(255,255,255,.1),rgba(255,255,255,.95)),
        url('/assets/images/coverpic/cover-1.webp') center/cover no-repeat;
      display:flex;flex-direction:column;justify-content:flex-end;overflow:hidden;
    }
    .channel-card h3{font-size:22px;font-weight:850;margin:0 0 8px}
    .channel-card p{color:var(--text-2);font-size:14px;margin:0}
    .metric-stack{display:grid;gap:14px}
    .mini-metric{display:flex;align-items:center;justify-content:space-between;gap:12px}
    .mini-metric strong{font-size:25px;color:var(--primary);line-height:1}
    .mini-metric span{color:var(--muted);font-size:13px;font-weight:700}
    .progress-line{height:9px;background:#EEF4FC;border-radius:999px;overflow:hidden;margin-top:8px}
    .progress-line em{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--accent));width:78%}
    .floating-tag{
      position:absolute;left:-22px;bottom:34px;background:#fff;border:1px solid var(--border);
      border-radius:18px;padding:12px 14px;box-shadow:var(--shadow);font-weight:800;color:var(--text);
      display:flex;align-items:center;gap:10px;
    }
    .floating-tag b{width:34px;height:34px;border-radius:12px;background:var(--bg-cyan);color:#0E8995;display:inline-flex;align-items:center;justify-content:center}
    .service-wrap{
      display:grid;grid-template-columns:.86fr 1.14fr;gap:30px;align-items:start;
    }
    .sticky-note{
      position:sticky;top:104px;border-radius:var(--radius-lg);background:linear-gradient(180deg,#fff,#F8FBFF);
      border:1px solid var(--border);padding:30px;box-shadow:var(--shadow);
    }
    .note-list{display:grid;gap:14px;margin:26px 0 0;padding:0;list-style:none}
    .note-list li{display:flex;gap:10px;color:var(--text-2);font-weight:700}
    .note-list li:before{content:"";width:10px;height:10px;margin-top:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 5px rgba(22,184,199,.12);flex:0 0 auto}
    .service-matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
    .service-card,.scene-card,.plan-card,.content-card{
      background:var(--card);border:1px solid rgba(223,232,244,.9);border-radius:var(--radius-lg);
      box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease,border .22s ease;
    }
    .service-card{padding:26px}
    .service-card:hover,.scene-card:hover,.plan-card:hover,.content-card:hover{
      transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:var(--border-strong);
    }
    .icon-box{
      width:50px;height:50px;border-radius:16px;background:var(--bg-soft);
      color:var(--primary);display:flex;align-items:center;justify-content:center;font-weight:900;font-size:20px;
      transition:background .2s ease,color .2s ease;
    }
    .service-card:hover .icon-box{background:var(--bg-cyan);color:#0E8995}
    .service-card h3{font-size:20px;font-weight:850;margin:18px 0 10px}
    .service-card p{font-size:15px;color:var(--text-2);margin:0 0 18px}
    .data-band{
      border-radius:32px;background:linear-gradient(135deg,#FFFFFF,#EEF6FF);
      border:1px solid var(--border);box-shadow:var(--shadow);padding:28px;
      display:grid;grid-template-columns:1.08fr repeat(4,1fr);gap:18px;align-items:center;
    }
    .data-intro h2{font-size:27px;font-weight:850;margin:0 0 8px}
    .data-intro p{color:var(--text-2);margin:0;font-size:15px}
    .data-item{
      padding:18px;border-radius:22px;background:rgba(255,255,255,.82);
      border:1px solid rgba(229,236,245,.82);min-height:130px;
    }
    .data-item strong{display:block;font-size:30px;line-height:1;color:var(--primary);font-weight:900;margin-bottom:12px}
    .data-item span{display:block;color:var(--text);font-weight:850;margin-bottom:4px}
    .data-item small{color:var(--muted);font-weight:700}
    .scene-layout{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:stretch}
    .scene-visual{
      min-height:510px;border-radius:30px;overflow:hidden;position:relative;
      background:url('/assets/images/coverpic/cover-2.webp') center/cover no-repeat;
      box-shadow:var(--shadow);border:1px solid var(--border);
    }
    .scene-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 20%,rgba(16,32,51,.58))}
    .scene-caption{
      position:absolute;left:26px;right:26px;bottom:24px;z-index:1;color:#fff;
      background:rgba(16,32,51,.66);border-radius:22px;padding:22px;border:1px solid rgba(255,255,255,.16);
    }
    .scene-caption h3{font-size:24px;font-weight:850;margin:0 0 8px}
    .scene-caption p{margin:0;color:rgba(255,255,255,.82)}
    .scene-list{display:grid;gap:16px}
    .scene-card{padding:22px}
    .tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
    .badge-soft{
      display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;
      background:rgba(36,107,254,.08);color:var(--primary);font-size:13px;font-weight:800;
      border:1px solid rgba(36,107,254,.1);
    }
    .badge-cyan{background:rgba(22,184,199,.1);color:#0E8995;border-color:rgba(22,184,199,.16)}
    .scene-card h3{font-size:20px;font-weight:850;margin:0 0 8px}
    .scene-card p{color:var(--text-2);font-size:15px;margin:0 0 12px}
    .plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
    .plan-card{padding:28px;position:relative;overflow:hidden}
    .plan-card.featured{border-color:rgba(36,107,254,.3);box-shadow:0 24px 58px rgba(36,107,254,.14)}
    .plan-card.featured:before{
      content:"推荐关注";position:absolute;right:20px;top:18px;
      padding:6px 10px;border-radius:999px;background:rgba(36,107,254,.1);color:var(--primary);
      font-size:12px;font-weight:900;
    }
    .plan-card h3{font-size:22px;font-weight:850;margin:0 0 8px}
    .plan-card .fit{color:var(--muted);font-weight:700;font-size:14px;margin-bottom:20px}
    .plan-list{list-style:none;margin:0 0 24px;padding:0;display:grid;gap:12px}
    .plan-list li{display:flex;gap:10px;color:var(--text-2);font-size:15px}
    .plan-list li:before{content:"✓";color:var(--accent);font-weight:900}
    .channel-entry{
      border-radius:32px;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);
      padding:28px;display:grid;grid-template-columns:1fr 380px;gap:26px;align-items:center;
    }
    .entry-copy h2{font-size:34px;font-weight:850;margin:0 0 12px}
    .entry-copy p{color:var(--text-2);margin:0 0 18px}
    .entry-preview{
      min-height:235px;border-radius:26px;background:url('/assets/images/coverpic/cover-3.webp') center/cover no-repeat;
      position:relative;overflow:hidden;border:1px solid var(--border);
    }
    .entry-preview:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(16,32,51,.52))}
    .entry-chip{
      position:absolute;left:18px;bottom:18px;right:18px;z-index:1;background:#fff;border-radius:20px;padding:16px;
      display:flex;justify-content:space-between;gap:12px;align-items:center;box-shadow:var(--shadow);
    }
    .entry-chip strong{font-size:16px}
    .entry-chip span{font-size:13px;color:var(--muted);font-weight:700}
    .faq-wrap{max-width:920px;margin:0 auto}
    .accordion{display:grid;gap:14px}
    .accordion-item{
      border:1px solid var(--border)!important;border-radius:20px!important;overflow:hidden;background:#fff;
      box-shadow:0 10px 28px rgba(38,91,160,.06);
    }
    .accordion-button{
      padding:20px 24px;font-weight:850;color:var(--text);background:#fff!important;box-shadow:none!important;
      border:0;font-size:16px;line-height:1.45;
    }
    .accordion-button:not(.collapsed){color:var(--primary)}
    .accordion-button:focus{box-shadow:none}
    .accordion-button:focus-visible{outline:3px solid rgba(36,107,254,.18);outline-offset:-3px}
    .accordion-button::after{
      width:28px;height:28px;border-radius:50%;background-color:#F1F6FF;background-position:center;background-size:14px;
      filter:none;
    }
    .accordion-body{padding:0 24px 22px;color:var(--text-2);font-size:15px;line-height:1.75}
    .cta-card{
      position:relative;overflow:hidden;border-radius:34px;padding:44px;
      background:
        radial-gradient(circle at 86% 18%,rgba(22,184,199,.18),transparent 28%),
        linear-gradient(135deg,#FFFFFF,#EEF6FF);
      border:1px solid var(--border);box-shadow:var(--shadow);
      display:grid;grid-template-columns:1fr 420px;gap:28px;align-items:center;
    }
    .cta-card:before{
      content:"";position:absolute;inset:0;background-image:
        linear-gradient(rgba(36,107,254,.045) 1px,transparent 1px),
        linear-gradient(90deg,rgba(36,107,254,.045) 1px,transparent 1px);
      background-size:28px 28px;opacity:.7;
    }
    .cta-copy,.contact-mini{position:relative}
    .cta-copy h2{font-size:36px;line-height:1.22;font-weight:850;margin:0 0 12px}
    .cta-copy p{color:var(--text-2);margin:0;max-width:640px}
    .contact-mini{
      background:#fff;border:1px solid var(--border);border-radius:24px;padding:22px;box-shadow:0 12px 32px rgba(38,91,160,.08);
    }
    .contact-mini label{font-size:13px;color:var(--muted);font-weight:800;margin-bottom:6px}
    .form-control,.form-select{
      height:50px;border-radius:16px;border:1px solid #E2EAF5;background:#F8FBFF;color:var(--text);
      box-shadow:none!important;font-size:14px;
    }
    .form-control:focus,.form-select:focus{
      border-color:rgba(36,107,254,.48);box-shadow:0 0 0 4px rgba(36,107,254,.08)!important;background:#fff;
    }
    .site-footer{
      background:#0F1D33;color:rgba(255,255,255,.78);padding:62px 0 28px;
    }
    .footer-top{display:grid;grid-template-columns:1.25fr repeat(3,1fr);gap:34px;margin-bottom:36px}
    .footer-brand .brand-logo{color:#fff;margin-bottom:14px}
    .footer-brand .brand-mark{box-shadow:none}
    .footer-brand p{max-width:330px;margin:0;color:rgba(255,255,255,.66);font-size:15px}
    .footer-col h3{font-size:16px;font-weight:850;color:#fff;margin:0 0 16px}
    .footer-links{list-style:none;margin:0;padding:0;display:grid;gap:10px}
    .footer-links a{color:rgba(255,255,255,.68);font-size:14px}
    .footer-links a:hover{color:#78E3EA}
    .footer-bottom{
      border-top:1px solid rgba(255,255,255,.1);padding-top:22px;
      display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;color:rgba(255,255,255,.55);font-size:13px;
    }
    @media (max-width:1199px){
      .hero h1{font-size:46px}
      .data-band{grid-template-columns:repeat(2,1fr)}
      .data-intro{grid-column:1/-1}
      .cta-card{grid-template-columns:1fr 370px}
    }
    @media (max-width:991px){
      :root{--nav-height:68px}
      .navbar-collapse{
        margin-top:12px;background:#fff;border:1px solid var(--border);border-radius:22px;
        padding:16px;box-shadow:var(--shadow);
      }
      .navbar-nav{gap:6px;margin-bottom:14px}
      .nav-actions{align-items:stretch;flex-direction:column}
      .nav-search{width:100%}
      .nav-actions .btn-k{width:100%}
      .hero{padding:76px 0 58px}
      .hero-media-bg{width:100%;height:460px;opacity:.34;top:76px}
      .hero h1{font-size:40px}
      .dashboard{margin-top:34px}
      .service-wrap,.scene-layout,.channel-entry,.cta-card{grid-template-columns:1fr}
      .sticky-note{position:relative;top:auto}
      .plan-grid{grid-template-columns:1fr}
      .entry-preview{min-height:260px}
      .footer-top{grid-template-columns:1fr 1fr}
    }
    @media (max-width:767px){
      .section{padding:68px 0}
      .section-tight{padding:52px 0}
      .section-title{font-size:30px}
      .hero h1{font-size:34px;letter-spacing:-.8px}
      .hero-lead{font-size:16px}
      .hero-cta .btn-k{width:100%}
      .trust-row{display:grid;grid-template-columns:1fr;gap:10px}
      .dash-grid,.service-matrix,.data-band{grid-template-columns:1fr}
      .floating-tag{position:static;margin-top:16px}
      .scene-visual{min-height:380px}
      .channel-entry,.cta-card{padding:24px;border-radius:26px}
      .entry-copy h2,.cta-copy h2{font-size:28px}
      .footer-top{grid-template-columns:1fr}
      .footer-bottom{display:grid}
    }
    @media (max-width:520px){
      .container{padding-left:20px;padding-right:20px}
      .brand-logo{font-size:19px}
      .brand-mark{width:35px;height:35px}
      .hero{padding-top:60px}
      .dashboard{padding:16px;border-radius:24px}
      .dash-top{flex-direction:column;align-items:stretch}
      .dash-status{text-align:center}
      .service-card,.scene-card,.plan-card{padding:22px}
      .data-item{min-height:auto}
      .entry-chip{display:grid}
      .contact-mini{padding:18px}
    }

/* roulang page: category1 */
:root{
      --primary:#246BFE;
      --primary-2:#2F6FED;
      --accent:#16B8C7;
      --accent-2:#20B7A8;
      --text:#102033;
      --text-2:#526274;
      --muted:#8A96A8;
      --bg:#F6F9FD;
      --bg-soft:#EEF6FF;
      --bg-cyan:#EEF9FB;
      --card:#FFFFFF;
      --border:#E5ECF5;
      --border-strong:#D9E5F4;
      --shadow:0 16px 40px rgba(38,91,160,.08);
      --shadow-hover:0 22px 56px rgba(38,91,160,.14);
      --radius-lg:24px;
      --radius-md:20px;
      --radius-sm:14px;
      --container:1200px;
      --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:var(--font);
      color:var(--text);
      background:
        radial-gradient(circle at 7% 4%, rgba(36,107,254,.08), transparent 28%),
        radial-gradient(circle at 92% 12%, rgba(22,184,199,.08), transparent 24%),
        var(--bg);
      line-height:1.75;
      overflow-x:hidden;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none;transition:color .2s ease, background .2s ease, transform .2s ease}
    img{max-width:100%;height:auto;display:block}
    button,input,textarea,select{font-family:inherit}
    ::selection{background:rgba(36,107,254,.16);color:var(--text)}
    .container{max-width:var(--container);padding-left:20px;padding-right:20px}
    .section{padding:92px 0}
    .section-tight{padding:64px 0}
    .section-head{max-width:780px;margin-bottom:34px}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      color:var(--primary);
      background:rgba(36,107,254,.09);
      font-size:14px;
      font-weight:700;
      margin-bottom:14px;
    }
    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:999px;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 0 0 5px rgba(36,107,254,.08);
    }
    h1,h2,h3,h4,p{margin-top:0}
    h1{
      font-size:48px;
      line-height:1.16;
      font-weight:800;
      letter-spacing:-.8px;
      margin-bottom:18px;
    }
    h2{
      font-size:36px;
      line-height:1.22;
      font-weight:800;
      letter-spacing:-.4px;
      margin-bottom:14px;
    }
    h3{font-size:23px;line-height:1.32;font-weight:800;margin-bottom:10px}
    h4{font-size:18px;font-weight:800;margin-bottom:8px}
    p{color:var(--text-2);font-size:16px}
    .lead-text{font-size:17px;line-height:1.85;color:var(--text-2)}
    .text-link{
      display:inline-flex;
      align-items:center;
      gap:6px;
      color:var(--primary);
      font-weight:800;
      font-size:15px;
    }
    .text-link span{transition:transform .2s ease}
    .text-link:hover{color:var(--accent)}
    .text-link:hover span{transform:translateX(4px)}

    .site-header{
      position:sticky;
      top:0;
      z-index:1000;
      background:rgba(255,255,255,.96);
      border-bottom:1px solid var(--border);
      box-shadow:0 10px 30px rgba(15,35,75,.04);
    }
    .navbar{min-height:76px;padding:10px 0}
    .brand-logo{
      display:inline-flex;
      align-items:center;
      gap:10px;
      font-weight:900;
      color:var(--text);
      letter-spacing:-.3px;
      white-space:nowrap;
    }
    .brand-mark{
      width:38px;
      height:38px;
      border-radius:14px;
      display:grid;
      place-items:center;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 12px 24px rgba(36,107,254,.18);
      position:relative;
      overflow:hidden;
    }
    .brand-mark::after{
      content:"";
      position:absolute;
      width:18px;
      height:18px;
      right:-5px;
      bottom:-4px;
      border-radius:50%;
      background:rgba(255,255,255,.34);
    }
    .brand-mark span{position:relative;z-index:1;font-size:17px}
    .navbar-brand{font-size:20px;margin-right:22px}
    .navbar-nav{gap:8px;align-items:center}
    .nav-link{
      color:var(--text-2);
      font-weight:700;
      font-size:15px;
      padding:9px 14px!important;
      border-radius:999px;
    }
    .nav-link:hover,.nav-link:focus{color:var(--primary);background:#F2F7FF}
    .nav-link.active{
      color:var(--primary)!important;
      background:rgba(36,107,254,.1);
    }
    .navbar-toggler{
      border:1px solid var(--border);
      border-radius:14px;
      padding:8px 10px;
      box-shadow:none!important;
      background:#fff;
    }
    .navbar-toggler:focus{outline:3px solid rgba(36,107,254,.14)}
    .nav-actions{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .nav-search{
      height:42px;
      width:244px;
      display:flex;
      align-items:center;
      gap:9px;
      padding:0 14px;
      border-radius:999px;
      background:#F8FBFF;
      border:1px solid var(--border);
      transition:border .2s ease, box-shadow .2s ease, background .2s ease;
    }
    .nav-search:focus-within{
      background:#fff;
      border-color:rgba(36,107,254,.42);
      box-shadow:0 0 0 4px rgba(36,107,254,.1);
    }
    .search-dot{
      width:12px;
      height:12px;
      border:2px solid var(--primary);
      border-radius:50%;
      position:relative;
      flex:0 0 auto;
    }
    .search-dot::after{
      content:"";
      position:absolute;
      width:6px;
      height:2px;
      right:-6px;
      bottom:-3px;
      background:var(--primary);
      transform:rotate(45deg);
      border-radius:99px;
    }
    .nav-search input{
      width:100%;
      border:0;
      outline:0;
      background:transparent;
      color:var(--text);
      font-size:14px;
    }
    .nav-search input::placeholder{color:var(--muted)}
    .btn-k{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      border-radius:999px;
      padding:11px 18px;
      min-height:42px;
      border:1px solid transparent;
      font-weight:800;
      font-size:15px;
      line-height:1;
      transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
      white-space:nowrap;
      cursor:pointer;
    }
    .btn-k-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 12px 28px rgba(36,107,254,.2);
    }
    .btn-k-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 38px rgba(36,107,254,.28)}
    .btn-k-secondary{
      color:var(--primary);
      background:#fff;
      border-color:rgba(36,107,254,.18);
    }
    .btn-k-secondary:hover{color:var(--primary);background:#EEF6FF;border-color:rgba(36,107,254,.32);transform:translateY(-1px)}
    .btn-k:focus-visible,.text-link:focus-visible,.nav-link:focus-visible,.footer-links a:focus-visible{
      outline:3px solid rgba(36,107,254,.22);
      outline-offset:3px;
    }

    .category-hero{
      position:relative;
      padding:72px 0 54px;
      overflow:hidden;
      background:
        linear-gradient(90deg, rgba(248,251,255,.94), rgba(238,246,255,.9)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      border-bottom:1px solid var(--border);
    }
    .category-hero::before{
      content:"";
      position:absolute;
      inset:0;
      background-image:
        linear-gradient(rgba(36,107,254,.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(36,107,254,.08) 1px, transparent 1px);
      background-size:38px 38px;
      mask-image:linear-gradient(90deg, rgba(0,0,0,.45), transparent 72%);
      pointer-events:none;
    }
    .category-hero::after{
      content:"";
      position:absolute;
      right:7%;
      top:22%;
      width:230px;
      height:230px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(22,184,199,.17), transparent 67%);
      pointer-events:none;
    }
    .hero-inner{position:relative;z-index:1}
    .breadcrumb-k{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:8px;
      margin-bottom:18px;
      color:var(--muted);
      font-size:14px;
      font-weight:700;
    }
    .breadcrumb-k a{color:var(--primary)}
    .breadcrumb-k a:hover{color:var(--accent)}
    .hero-panel{
      border:1px solid rgba(223,232,244,.92);
      border-radius:var(--radius-lg);
      background:rgba(255,255,255,.9);
      box-shadow:var(--shadow);
      padding:24px;
    }
    .keyword-cloud{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin:18px 0 22px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:8px 12px;
      border-radius:999px;
      color:var(--primary);
      background:rgba(36,107,254,.08);
      border:1px solid rgba(36,107,254,.12);
      font-weight:800;
      font-size:14px;
    }
    .tag.cyan{color:#087E88;background:rgba(22,184,199,.1);border-color:rgba(22,184,199,.16)}
    .mini-search{
      display:flex;
      align-items:center;
      gap:10px;
      background:#F8FBFF;
      border:1px solid var(--border);
      border-radius:18px;
      padding:10px;
    }
    .mini-search input{
      flex:1;
      min-width:0;
      height:42px;
      border:0;
      background:transparent;
      outline:0;
      color:var(--text);
      padding:0 8px;
    }

    .channel-bar-wrap{position:relative;margin-top:-26px;z-index:5}
    .channel-bar{
      display:flex;
      gap:10px;
      padding:14px;
      overflow-x:auto;
      background:#fff;
      border:1px solid var(--border);
      border-radius:22px;
      box-shadow:var(--shadow);
      scrollbar-width:none;
    }
    .channel-bar::-webkit-scrollbar{display:none}
    .channel-item{
      flex:0 0 auto;
      border:0;
      border-radius:999px;
      padding:10px 16px;
      color:var(--text-2);
      background:#F8FBFF;
      font-weight:800;
      transition:all .2s ease;
    }
    .channel-item:hover{color:var(--primary);background:#EEF6FF;transform:translateY(-1px)}
    .channel-item.active{color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:0 12px 24px rgba(36,107,254,.16)}

    .content-layout{align-items:flex-start}
    .solution-card{
      display:grid;
      grid-template-columns:190px 1fr;
      gap:24px;
      padding:22px;
      background:var(--card);
      border:1px solid rgba(223,232,244,.94);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      margin-bottom:22px;
      transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
      overflow:hidden;
    }
    .solution-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(36,107,254,.24);
    }
    .solution-card:hover h3{color:var(--primary)}
    .solution-image{
      min-height:160px;
      border-radius:20px;
      overflow:hidden;
      background:linear-gradient(135deg,#EAF2FF,#EEF9FB);
      position:relative;
    }
    .solution-image img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:transform .28s ease;
    }
    .solution-card:hover .solution-image img{transform:scale(1.05)}
    .solution-image::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, transparent, rgba(16,32,51,.08));
    }
    .solution-meta{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-bottom:10px;
    }
    .solution-meta .tag{font-size:13px;padding:6px 10px}
    .solution-card h3{transition:color .2s ease}
    .solution-card p{
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
      margin-bottom:15px;
    }
    .solution-foot{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      color:var(--muted);
      font-size:14px;
      font-weight:700;
    }

    .sidebar-stack{position:sticky;top:98px}
    .side-card{
      padding:24px;
      border-radius:var(--radius-lg);
      border:1px solid rgba(223,232,244,.94);
      background:#fff;
      box-shadow:var(--shadow);
      margin-bottom:22px;
    }
    .side-card h3{font-size:20px;margin-bottom:16px}
    .side-search{
      display:flex;
      flex-direction:column;
      gap:12px;
    }
    .form-control-k{
      width:100%;
      height:50px;
      border:1px solid var(--border);
      border-radius:16px;
      background:#F8FBFF;
      color:var(--text);
      padding:0 15px;
      outline:0;
      transition:border .2s ease, box-shadow .2s ease, background .2s ease;
    }
    .form-control-k:focus{
      background:#fff;
      border-color:rgba(36,107,254,.48);
      box-shadow:0 0 0 4px rgba(36,107,254,.1);
    }
    .topic-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:12px;
    }
    .topic-list a{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:12px 0;
      border-bottom:1px solid var(--border);
      color:var(--text-2);
      font-weight:750;
    }
    .topic-list li:last-child a{border-bottom:0}
    .topic-list a:hover{color:var(--primary);transform:translateX(3px)}
    .topic-index{
      width:28px;
      height:28px;
      border-radius:10px;
      display:inline-grid;
      place-items:center;
      background:#EEF6FF;
      color:var(--primary);
      font-size:13px;
      font-weight:900;
      flex:0 0 auto;
    }
    .side-topic-text{flex:1}
    .side-consult{
      background:
        radial-gradient(circle at 100% 0, rgba(22,184,199,.18), transparent 35%),
        linear-gradient(135deg,#F8FBFF,#EEF6FF);
      border-color:rgba(36,107,254,.14);
    }
    .side-consult .btn-k{width:100%;margin-top:8px}

    .feature-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:20px;
    }
    .feature-card{
      padding:24px;
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius-md);
      box-shadow:var(--shadow);
      transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(36,107,254,.2)}
    .icon-box{
      width:48px;
      height:48px;
      border-radius:16px;
      display:grid;
      place-items:center;
      margin-bottom:16px;
      color:var(--primary);
      background:linear-gradient(135deg,#EAF2FF,#EEF9FB);
      font-weight:900;
      font-size:20px;
    }
    .feature-card:hover .icon-box{color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent))}
    .feature-card p{font-size:15px;margin-bottom:0}

    .process-wrap{
      border-radius:28px;
      background:#fff;
      border:1px solid var(--border);
      box-shadow:var(--shadow);
      padding:34px;
      position:relative;
      overflow:hidden;
    }
    .process-wrap::before{
      content:"";
      position:absolute;
      inset:auto -60px -90px auto;
      width:230px;
      height:230px;
      border-radius:50%;
      background:rgba(36,107,254,.08);
    }
    .process-grid{
      position:relative;
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:18px;
    }
    .process-step{
      padding:22px;
      border-radius:20px;
      background:#F8FBFF;
      border:1px solid var(--border);
    }
    .step-num{
      display:inline-flex;
      width:34px;
      height:34px;
      align-items:center;
      justify-content:center;
      border-radius:12px;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      font-weight:900;
      margin-bottom:14px;
    }
    .process-step p{font-size:15px;margin-bottom:0}

    .comparison-card{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:24px;
      align-items:center;
      border-radius:28px;
      padding:30px;
      background:
        linear-gradient(135deg, rgba(255,255,255,.94), rgba(248,251,255,.98));
      border:1px solid var(--border);
      box-shadow:var(--shadow);
    }
    .comparison-image{
      border-radius:24px;
      overflow:hidden;
      min-height:310px;
      background:#EAF2FF;
    }
    .comparison-image img{width:100%;height:100%;object-fit:cover}
    .check-list{
      list-style:none;
      padding:0;
      margin:18px 0 0;
      display:grid;
      gap:12px;
    }
    .check-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:var(--text-2);
      font-size:16px;
    }
    .check-list li::before{
      content:"✓";
      width:22px;
      height:22px;
      border-radius:999px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      background:rgba(22,184,199,.12);
      color:#087E88;
      font-weight:900;
      flex:0 0 auto;
      margin-top:3px;
    }

    .accordion-k .accordion-item{
      border:1px solid var(--border);
      border-radius:20px!important;
      overflow:hidden;
      margin-bottom:14px;
      background:#fff;
      box-shadow:0 12px 28px rgba(38,91,160,.05);
    }
    .accordion-k .accordion-button{
      padding:20px 22px;
      border:0;
      box-shadow:none!important;
      color:var(--text);
      background:#fff;
      font-weight:850;
      font-size:17px;
    }
    .accordion-k .accordion-button:not(.collapsed){
      color:var(--primary);
      background:#F8FBFF;
    }
    .accordion-k .accordion-button::after{
      border-radius:50%;
      background-color:#EEF6FF;
      background-position:center;
      padding:12px;
    }
    .accordion-k .accordion-body{
      padding:0 22px 22px;
      color:var(--text-2);
      line-height:1.8;
    }

    .cta-band{
      border-radius:30px;
      padding:38px;
      background:
        radial-gradient(circle at 88% 18%, rgba(22,184,199,.2), transparent 34%),
        linear-gradient(135deg,#F8FBFF,#EAF2FF);
      border:1px solid rgba(36,107,254,.14);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .cta-actions{
      display:flex;
      justify-content:flex-end;
      gap:12px;
      flex-wrap:wrap;
    }

    .site-footer{
      background:#0F1D33;
      color:#DCE8F7;
      padding:60px 0 26px;
    }
    .footer-top{
      display:grid;
      grid-template-columns:1.7fr 1fr 1fr 1fr;
      gap:34px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(229,236,245,.14);
    }
    .footer-brand .brand-logo{color:#fff;margin-bottom:14px}
    .footer-brand p{
      color:#AEBBD0;
      max-width:420px;
      font-size:15px;
      margin-bottom:0;
    }
    .footer-col h3{
      color:#fff;
      font-size:16px;
      margin-bottom:16px;
    }
    .footer-links{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:#AEBBD0;
      font-size:15px;
    }
    .footer-links a:hover{color:#7EE3EA}
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      padding-top:22px;
      color:#8FA0B8;
      font-size:14px;
    }

    @media (max-width:1199px){
      h1{font-size:42px}
      h2{font-size:32px}
      .nav-search{width:205px}
      .feature-grid,.process-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:991px){
      .navbar-collapse{
        margin-top:12px;
        padding:16px;
        background:#fff;
        border:1px solid var(--border);
        border-radius:22px;
        box-shadow:var(--shadow);
      }
      .navbar-nav{align-items:stretch;gap:6px}
      .nav-actions{
        align-items:stretch;
        flex-direction:column;
        margin-top:14px;
      }
      .nav-search{width:100%}
      .nav-actions .btn-k{width:100%}
      .category-hero{padding:58px 0 48px}
      .sidebar-stack{position:static}
      .comparison-card{grid-template-columns:1fr}
      .footer-top{grid-template-columns:1fr 1fr}
    }
    @media (max-width:767px){
      .section{padding:68px 0}
      .section-tight{padding:50px 0}
      h1{font-size:34px;letter-spacing:-.4px}
      h2{font-size:28px}
      h3{font-size:21px}
      .lead-text{font-size:16px}
      .hero-panel{margin-top:18px}
      .mini-search{flex-direction:column;align-items:stretch}
      .solution-card{grid-template-columns:1fr;padding:18px}
      .solution-image{min-height:190px}
      .solution-foot{align-items:flex-start;flex-direction:column}
      .feature-grid,.process-grid{grid-template-columns:1fr}
      .process-wrap,.comparison-card,.cta-band{padding:24px}
      .cta-actions{justify-content:flex-start}
      .cta-actions .btn-k{width:100%}
      .footer-top{grid-template-columns:1fr}
      .footer-bottom{flex-direction:column}
    }
    @media (max-width:520px){
      .container{padding-left:18px;padding-right:18px}
      .navbar{min-height:68px}
      .brand-mark{width:34px;height:34px;border-radius:12px}
      .navbar-brand{font-size:18px}
      .category-hero{padding:46px 0 42px}
      .channel-bar{border-radius:18px;padding:12px}
      .channel-item{padding:9px 13px;font-size:14px}
      .tag{font-size:13px}
      .solution-image{min-height:160px}
    }