/* roulang page: index */
:root{
      --primary:#2D6CDF;
      --primary-dark:#1E4FA8;
      --primary-soft:#EAF2FF;
      --secondary:#6BA8FF;
      --accent:#13A6A6;
      --accent-soft:#E8FAF8;
      --warning-soft:#FFF7E8;
      --bg:#F6F9FE;
      --bg-2:#EEF5FF;
      --white:#FFFFFF;
      --text:#27364A;
      --muted:#66758A;
      --light-muted:#8A98AA;
      --border:#DCE7F5;
      --border-soft:rgba(120,155,205,.18);
      --shadow:0 12px 30px rgba(36,74,125,.08);
      --shadow-hover:0 18px 45px rgba(36,74,125,.13);
      --radius-sm:10px;
      --radius-md:16px;
      --radius-lg:24px;
      --radius-xl:32px;
      --container:1180px;
      --font:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:var(--font);
      color:var(--text);
      background:linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 46%,#F6F9FE 100%);
      line-height:1.75;
      font-size:16px;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none;transition:all .22s ease}
    img{max-width:100%;height:auto;display:block}
    button,input,textarea,select{font-family:inherit}
    ::selection{background:rgba(45,108,223,.18);color:var(--primary-dark)}
    .container{max-width:var(--container)}
    .skip-link{
      position:absolute;left:-999px;top:auto;width:1px;height:1px;overflow:hidden;
    }
    .skip-link:focus{
      left:16px;top:16px;width:auto;height:auto;z-index:9999;
      padding:10px 14px;border-radius:var(--radius-sm);background:var(--primary);color:#fff;
    }
    .top-note{
      background:linear-gradient(90deg,var(--primary-soft),#F8FBFF,var(--warning-soft));
      border-bottom:1px solid rgba(120,155,205,.16);
      color:#4D6079;
      font-size:14px;
    }
    .top-note .note-wrap{
      min-height:42px;
      display:flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      text-align:center;
    }
    .note-dot{
      width:8px;height:8px;border-radius:99px;background:var(--accent);
      box-shadow:0 0 0 5px rgba(19,166,166,.12);
      flex:0 0 auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:1040;
      background:rgba(255,255,255,.96);
      border-bottom:1px solid rgba(220,231,245,.82);
      box-shadow:0 8px 24px rgba(36,74,125,.04);
    }
    .navbar{
      padding:16px 0;
    }
    .nav-shell{
      width:100%;
      display:grid;
      grid-template-columns:1fr auto 1fr;
      align-items:center;
      gap:24px;
    }
    .nav-side{
      display:flex;
      align-items:center;
      gap:8px;
    }
    .nav-side.left{justify-content:flex-end}
    .nav-side.right{justify-content:flex-start}
    .brand-logo{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:12px;
      min-width:310px;
      padding:10px 18px;
      border-radius:999px;
      background:linear-gradient(135deg,#FFFFFF 0%,#F1F7FF 100%);
      border:1px solid rgba(120,155,205,.22);
      box-shadow:0 10px 25px rgba(36,74,125,.07);
    }
    .brand-mark{
      width:34px;height:34px;border-radius:12px;
      display:grid;place-items:center;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      color:#fff;
      font-weight:800;
      box-shadow:0 10px 20px rgba(45,108,223,.24);
      flex:0 0 auto;
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.15;
      min-width:0;
    }
    .brand-title{
      font-size:18px;
      font-weight:800;
      color:var(--primary-dark);
      letter-spacing:-.02em;
      white-space:nowrap;
    }
    .brand-sub{
      font-size:12px;
      color:var(--muted);
      margin-top:2px;
      white-space:nowrap;
    }
    .nav-link-custom{
      position:relative;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:42px;
      padding:9px 14px;
      border-radius:999px;
      font-size:15px;
      font-weight:600;
      color:#45566F;
    }
    .nav-link-custom:hover,
    .nav-link-custom:focus{
      color:var(--primary);
      background:var(--primary-soft);
    }
    .nav-link-custom.active{
      color:var(--primary-dark);
      background:#E7F0FF;
      box-shadow:inset 0 0 0 1px rgba(45,108,223,.12);
    }
    .navbar-toggler{
      border:1px solid var(--border);
      border-radius:14px;
      padding:9px 11px;
      box-shadow:none!important;
      background:#fff;
    }
    .navbar-toggler:focus-visible,
    .btn:focus-visible,
    .btn-main:focus-visible,
    .btn-sub:focus-visible,
    .accordion-button:focus-visible,
    input:focus-visible,
    textarea:focus-visible{
      outline:3px solid rgba(45,108,223,.25);
      outline-offset:3px;
      box-shadow:none;
    }
    .mobile-brand{
      display:none;
      align-items:center;
      gap:10px;
      min-width:0;
    }
    .mobile-brand .brand-title{font-size:16px;white-space:normal}
    .mobile-brand .brand-sub{display:none}
    .mobile-menu{
      border-top:1px solid var(--border);
      padding:12px 0 6px;
    }
    .mobile-menu .nav-link-custom{
      width:100%;
      justify-content:flex-start;
      min-height:46px;
      margin:2px 0;
    }
    .hero{
      position:relative;
      padding:96px 0 70px;
      overflow:hidden;
      background:
        radial-gradient(circle at 78% 16%,rgba(107,168,255,.18),transparent 34%),
        radial-gradient(circle at 12% 26%,rgba(19,166,166,.09),transparent 30%);
    }
    .hero:before{
      content:"";
      position:absolute;
      inset:0;
      background-image:linear-gradient(rgba(45,108,223,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(45,108,223,.06) 1px,transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 70%);
      pointer-events:none;
    }
    .hero-content{position:relative;z-index:1}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:9px;
      padding:8px 12px;
      border-radius:999px;
      background:#fff;
      color:var(--primary-dark);
      border:1px solid rgba(45,108,223,.14);
      box-shadow:0 10px 25px rgba(36,74,125,.06);
      font-size:14px;
      font-weight:700;
      margin-bottom:22px;
    }
    .eyebrow:before{
      content:"";
      width:8px;height:8px;border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 0 5px rgba(19,166,166,.12);
    }
    h1,h2,h3,h4{color:var(--text);letter-spacing:-.035em}
    .hero h1{
      font-size:clamp(34px,4.5vw,54px);
      line-height:1.16;
      font-weight:800;
      margin:0 0 22px;
    }
    .hero h1 span{
      color:var(--primary-dark);
      background:linear-gradient(90deg,var(--primary-dark),var(--primary));
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
    }
    .hero-lead{
      font-size:18px;
      line-height:1.85;
      color:var(--muted);
      max-width:660px;
      margin-bottom:30px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      margin-bottom:28px;
    }
    .btn-main,.btn-sub{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:48px;
      padding:12px 22px;
      border-radius:999px;
      font-size:15px;
      font-weight:700;
      border:1px solid transparent;
      transition:all .22s ease;
      cursor:pointer;
    }
    .btn-main{
      background:var(--primary);
      color:#fff;
      box-shadow:0 12px 26px rgba(45,108,223,.24);
    }
    .btn-main:hover{
      color:#fff;
      background:var(--primary-dark);
      transform:translateY(-2px);
      box-shadow:0 18px 34px rgba(45,108,223,.28);
    }
    .btn-sub{
      background:#fff;
      color:var(--primary-dark);
      border-color:rgba(45,108,223,.18);
      box-shadow:0 10px 22px rgba(36,74,125,.06);
    }
    .btn-sub:hover{
      color:var(--primary-dark);
      background:var(--primary-soft);
      border-color:rgba(45,108,223,.28);
      transform:translateY(-2px);
    }
    .trust-points{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
    }
    .trust-item{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.78);
      border:1px solid rgba(120,155,205,.18);
      color:#52657E;
      font-size:14px;
      font-weight:600;
    }
    .trust-item i{
      width:18px;height:18px;border-radius:50%;
      display:grid;place-items:center;
      background:var(--accent-soft);
      color:var(--accent);
      font-style:normal;
      font-size:12px;
    }
    .dashboard{
      position:relative;
      max-width:500px;
      margin-left:auto;
      padding:18px;
      border-radius:32px;
      background:linear-gradient(160deg,#FFFFFF 0%,#F3F8FF 100%);
      border:1px solid rgba(120,155,205,.22);
      box-shadow:0 24px 70px rgba(36,74,125,.13);
    }
    .dashboard:before,.dashboard:after{
      content:"";
      position:absolute;
      border-radius:999px;
      z-index:-1;
    }
    .dashboard:before{
      width:140px;height:140px;
      background:rgba(107,168,255,.22);
      right:-30px;top:-26px;
      filter:blur(2px);
    }
    .dashboard:after{
      width:110px;height:110px;
      background:rgba(19,166,166,.14);
      left:-24px;bottom:-28px;
    }
    .dash-head{
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding:16px 16px 14px;
      border-radius:22px;
      background:#fff;
      border:1px solid rgba(120,155,205,.18);
      margin-bottom:14px;
    }
    .dash-title{
      font-weight:800;
      color:var(--primary-dark);
      margin:0;
    }
    .status-pill{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:7px 10px;
      border-radius:999px;
      background:var(--accent-soft);
      color:#087E7E;
      font-size:13px;
      font-weight:700;
      white-space:nowrap;
    }
    .status-pill:before{
      content:"";
      width:7px;height:7px;border-radius:50%;background:var(--accent);
    }
    .dash-grid{
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:14px;
    }
    .panel-card{
      background:#fff;
      border:1px solid rgba(120,155,205,.18);
      border-radius:22px;
      padding:16px;
      box-shadow:0 12px 26px rgba(36,74,125,.06);
    }
    .panel-card.large{grid-row:span 2}
    .panel-label{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      color:var(--muted);
      font-size:13px;
      font-weight:700;
      margin-bottom:12px;
    }
    .tag-cloud{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      padding:7px 10px;
      border-radius:999px;
      background:var(--primary-soft);
      color:var(--primary-dark);
      font-size:13px;
      font-weight:700;
    }
    .tag.green{background:var(--accent-soft);color:#087E7E}
    .tag.white{background:#fff;border:1px solid var(--border);color:#52657E}
    .meter{
      height:10px;
      border-radius:999px;
      background:#E8EFFB;
      overflow:hidden;
      margin:12px 0;
    }
    .meter span{
      display:block;
      height:100%;
      border-radius:999px;
      background:linear-gradient(90deg,var(--primary),var(--secondary));
    }
    .dash-number{
      font-size:34px;
      line-height:1;
      font-weight:800;
      color:var(--primary-dark);
      margin:4px 0;
    }
    .mini-list{
      display:grid;
      gap:10px;
    }
    .mini-row{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      padding:10px;
      border-radius:14px;
      background:#F7FAFF;
      color:#4D6079;
      font-size:13px;
      font-weight:650;
    }
    .mini-row b{color:var(--primary-dark)}
    .section{
      padding:92px 0;
    }
    .section-sm{padding:72px 0}
    .section-bg{
      background:linear-gradient(180deg,#F6F9FE 0%,#FFFFFF 100%);
      border-top:1px solid rgba(220,231,245,.6);
      border-bottom:1px solid rgba(220,231,245,.6);
    }
    .section-head{
      max-width:780px;
      margin:0 auto 44px;
      text-align:center;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding:7px 11px;
      border-radius:999px;
      background:var(--primary-soft);
      color:var(--primary-dark);
      font-size:13px;
      font-weight:800;
      margin-bottom:14px;
    }
    .section-title{
      font-size:clamp(28px,3.4vw,40px);
      line-height:1.25;
      font-weight:800;
      margin:0 0 14px;
    }
    .section-desc{
      color:var(--muted);
      font-size:17px;
      margin:0;
    }
    .pain-layout{
      display:grid;
      grid-template-columns:.82fr 1.18fr;
      gap:34px;
      align-items:start;
    }
    .sticky-note{
      position:sticky;
      top:118px;
      border-radius:var(--radius-lg);
      background:linear-gradient(145deg,#FFFFFF,#F1F7FF);
      border:1px solid rgba(120,155,205,.2);
      padding:30px;
      box-shadow:var(--shadow);
    }
    .sticky-note h2{
      font-size:32px;
      line-height:1.28;
      font-weight:800;
      margin-bottom:16px;
    }
    .sticky-note p{color:var(--muted);margin-bottom:20px}
    .note-list{
      display:grid;
      gap:10px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .note-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:#52657E;
      font-weight:600;
    }
    .note-list li:before{
      content:"";
      width:9px;height:9px;margin-top:10px;border-radius:50%;background:var(--accent);
      box-shadow:0 0 0 5px rgba(19,166,166,.10);
      flex:0 0 auto;
    }
    .pain-stack{
      display:grid;
      gap:18px;
    }
    .story-card{
      display:grid;
      grid-template-columns:auto 1fr;
      gap:18px;
      align-items:start;
      padding:24px;
      border-radius:var(--radius-lg);
      background:#fff;
      border:1px solid rgba(120,155,205,.18);
      box-shadow:var(--shadow);
      transition:all .22s ease;
    }
    .story-card:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(45,108,223,.26);
    }
    .story-no{
      width:48px;height:48px;border-radius:16px;
      display:grid;place-items:center;
      background:var(--primary-soft);
      color:var(--primary-dark);
      font-weight:800;
      font-size:15px;
      flex:0 0 auto;
    }
    .story-card:nth-child(even){
      margin-left:38px;
    }
    .story-card h3{
      font-size:21px;
      font-weight:800;
      margin:0 0 8px;
    }
    .story-card p{color:var(--muted);margin:0}
    .solution-wrap{
      display:grid;
      grid-template-columns:1.08fr .92fr;
      gap:28px;
      align-items:stretch;
    }
    .method-card{
      position:relative;
      overflow:hidden;
      min-height:430px;
      padding:34px;
      border-radius:32px;
      background:linear-gradient(145deg,var(--primary-dark),var(--primary));
      color:#fff;
      box-shadow:0 24px 60px rgba(45,108,223,.22);
    }
    .method-card:after{
      content:"";
      position:absolute;
      right:-80px;bottom:-110px;
      width:270px;height:270px;border-radius:50%;
      background:rgba(255,255,255,.13);
    }
    .method-card h2{
      color:#fff;
      font-size:36px;
      font-weight:800;
      line-height:1.25;
      margin-bottom:18px;
    }
    .method-card p{
      color:rgba(255,255,255,.82);
      font-size:17px;
      max-width:620px;
      margin-bottom:26px;
    }
    .method-steps{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:14px;
      position:relative;
      z-index:1;
    }
    .method-step{
      padding:16px;
      border-radius:18px;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.18);
    }
    .method-step b{
      display:block;
      color:#fff;
      margin-bottom:5px;
    }
    .method-step span{
      color:rgba(255,255,255,.76);
      font-size:14px;
    }
    .feature-list{
      display:grid;
      gap:16px;
    }
    .feature-item{
      display:flex;
      gap:15px;
      padding:22px;
      border-radius:var(--radius-lg);
      background:#fff;
      border:1px solid rgba(120,155,205,.18);
      box-shadow:var(--shadow);
      transition:all .22s ease;
    }
    .feature-item:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow-hover);
    }
    .feature-icon{
      width:46px;height:46px;border-radius:16px;
      display:grid;place-items:center;
      background:var(--primary-soft);
      color:var(--primary-dark);
      font-weight:800;
      flex:0 0 auto;
    }
    .feature-item h3{
      font-size:20px;
      font-weight:800;
      margin:0 0 6px;
    }
    .feature-item p{margin:0;color:var(--muted)}
    .category-entry{
      display:grid;
      grid-template-columns:1.25fr .75fr;
      gap:24px;
      align-items:stretch;
    }
    .category-main{
      padding:32px;
      border-radius:32px;
      background:#fff;
      border:1px solid rgba(120,155,205,.18);
      box-shadow:var(--shadow);
      transition:all .22s ease;
    }
    .category-main:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
    .category-main .big-label{
      display:inline-flex;
      padding:7px 11px;
      border-radius:999px;
      background:var(--accent-soft);
      color:#087E7E;
      font-weight:800;
      font-size:13px;
      margin-bottom:18px;
    }
    .category-main h2{
      font-size:32px;
      font-weight:800;
      margin-bottom:12px;
    }
    .category-main p{color:var(--muted);margin-bottom:24px}
    .cover-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
      margin-top:24px;
    }
    .cover-tile{
      min-height:110px;
      border-radius:20px;
      padding:14px;
      background:linear-gradient(145deg,#F2F7FF,#FFFFFF);
      border:1px solid rgba(120,155,205,.16);
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      color:#52657E;
      font-weight:700;
    }
    .cover-tile b{font-size:20px;color:var(--primary-dark)}
    .category-side{
      display:grid;
      gap:16px;
    }
    .side-entry{
      display:flex;
      gap:14px;
      align-items:flex-start;
      padding:20px;
      border-radius:24px;
      background:#fff;
      border:1px solid rgba(120,155,205,.18);
      box-shadow:var(--shadow);
      transition:all .22s ease;
    }
    .side-entry:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(45,108,223,.24)}
    .side-entry .dot-icon{
      width:42px;height:42px;border-radius:15px;background:var(--primary-soft);color:var(--primary-dark);
      display:grid;place-items:center;font-weight:800;flex:0 0 auto;
    }
    .side-entry h3{font-size:19px;font-weight:800;margin:0 0 5px}
    .side-entry p{font-size:14px;color:var(--muted);margin:0 0 10px}
    .text-link{
      display:inline-flex;
      align-items:center;
      gap:5px;
      color:var(--primary-dark);
      font-weight:800;
      font-size:14px;
    }
    .text-link span{transition:transform .22s ease}
    .text-link:hover span{transform:translateX(3px)}
    .metrics{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:18px;
    }
    .metric-card{
      padding:26px 22px;
      border-radius:var(--radius-lg);
      background:#fff;
      border:1px solid rgba(120,155,205,.18);
      box-shadow:var(--shadow);
      text-align:center;
      transition:all .22s ease;
    }
    .metric-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
    .metric-num{
      font-size:34px;
      line-height:1.1;
      font-weight:800;
      color:var(--primary-dark);
      margin-bottom:8px;
    }
    .metric-title{
      font-size:16px;
      font-weight:800;
      margin-bottom:6px;
    }
    .metric-desc{
      font-size:14px;
      color:var(--muted);
      margin:0;
    }
    .feedback-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:22px;
    }
    .quote-card{
      padding:26px;
      border-radius:var(--radius-lg);
      background:#fff;
      border:1px solid rgba(120,155,205,.18);
      box-shadow:var(--shadow);
      transition:all .22s ease;
    }
    .quote-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
    .quote-top{
      display:flex;
      align-items:center;
      gap:12px;
      margin-bottom:18px;
    }
    .avatar-letter{
      width:44px;height:44px;border-radius:16px;
      display:grid;place-items:center;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      color:#fff;font-weight:800;
      box-shadow:0 10px 22px rgba(45,108,223,.18);
    }
    .quote-name{font-weight:800;margin:0}
    .quote-role{font-size:13px;color:var(--muted);margin:0}
    .quote-text{color:#52657E;margin-bottom:16px}
    .scene-tag{
      display:inline-flex;
      padding:6px 10px;
      border-radius:999px;
      background:var(--primary-soft);
      color:var(--primary-dark);
      font-size:13px;
      font-weight:800;
    }
    .accordion{
      max-width:900px;
      margin:0 auto;
      display:grid;
      gap:12px;
    }
    .accordion-item{
      border:1px solid rgba(120,155,205,.18)!important;
      border-radius:18px!important;
      overflow:hidden;
      background:#fff;
      box-shadow:0 10px 25px rgba(36,74,125,.05);
    }
    .accordion-button{
      padding:20px 22px;
      font-weight:800;
      color:var(--text);
      background:#fff;
      box-shadow:none!important;
      line-height:1.45;
    }
    .accordion-button:not(.collapsed){
      color:var(--primary-dark);
      background:var(--primary-soft);
    }
    .accordion-button::after{
      filter:sepia(1) saturate(5) hue-rotate(182deg);
    }
    .accordion-body{
      padding:20px 22px 24px;
      color:var(--muted);
      background:#fff;
    }
    .cta-box{
      position:relative;
      overflow:hidden;
      padding:48px;
      border-radius:34px;
      background:linear-gradient(135deg,#EAF2FF 0%,#FFFFFF 58%,#E8FAF8 100%);
      border:1px solid rgba(120,155,205,.2);
      box-shadow:var(--shadow);
    }
    .cta-box:before{
      content:"";
      position:absolute;
      width:230px;height:230px;
      right:-80px;top:-90px;
      border-radius:50%;
      background:rgba(107,168,255,.18);
    }
    .cta-content{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1fr auto;
      gap:28px;
      align-items:center;
    }
    .cta-box h2{
      font-size:clamp(28px,3.2vw,40px);
      font-weight:800;
      margin:0 0 12px;
    }
    .cta-box p{
      color:var(--muted);
      margin:0;
      max-width:720px;
    }
    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      justify-content:flex-end;
    }
    .cta-note{
      position:relative;
      z-index:1;
      margin-top:22px;
      padding-top:18px;
      border-top:1px solid rgba(120,155,205,.2);
      color:#5C6E84;
      font-size:14px;
      font-weight:600;
    }
    .site-footer{
      background:#EEF5FF;
      border-top:1px solid rgba(120,155,205,.22);
      padding:58px 0 26px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.25fr .75fr .95fr;
      gap:34px;
      margin-bottom:32px;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      margin-bottom:16px;
    }
    .footer-brand-name{
      font-weight:800;
      color:var(--primary-dark);
      font-size:19px;
      line-height:1.25;
    }
    .footer-desc{
      color:var(--muted);
      margin:0;
      max-width:520px;
    }
    .footer-title{
      font-weight:800;
      margin-bottom:14px;
      color:var(--text);
    }
    .footer-links{
      display:grid;
      gap:10px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .footer-links a{
      color:#52657E;
      font-weight:600;
    }
    .footer-links a:hover{color:var(--primary-dark);padding-left:3px}
    .footer-note{
      padding:16px;
      border-radius:18px;
      background:rgba(255,255,255,.62);
      border:1px solid rgba(120,155,205,.18);
      color:#5C6E84;
      margin:0;
    }
    .copyright{
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      padding-top:22px;
      border-top:1px solid rgba(120,155,205,.22);
      color:#66758A;
      font-size:14px;
    }
    @media (max-width:1199.98px){
      .brand-logo{min-width:280px;padding-left:14px;padding-right:14px}
      .brand-title{font-size:16px}
      .nav-link-custom{padding:8px 10px;font-size:14px}
      .dashboard{max-width:460px}
      .method-card h2{font-size:32px}
    }
    @media (max-width:991.98px){
      .navbar{padding:12px 0}
      .desktop-nav-shell{display:none}
      .mobile-brand{display:flex}
      .hero{padding:72px 0 54px}
      .dashboard{margin:34px auto 0}
      .pain-layout,.solution-wrap,.category-entry,.cta-content{
        grid-template-columns:1fr;
      }
      .sticky-note{position:relative;top:auto}
      .story-card:nth-child(even){margin-left:0}
      .metrics{grid-template-columns:repeat(2,1fr)}
      .feedback-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-grid>div:first-child{grid-column:1/-1}
    }
    @media (min-width:992px){
      .mobile-nav-wrap{display:none!important}
      .desktop-nav-shell{display:grid}
    }
    @media (max-width:767.98px){
      body{font-size:15px}
      .top-note .note-wrap{justify-content:flex-start;text-align:left}
      .hero{padding:56px 0 42px}
      .hero-lead{font-size:16px}
      .hero-actions .btn-main,.hero-actions .btn-sub,
      .cta-actions .btn-main,.cta-actions .btn-sub{
        width:100%;
      }
      .trust-points{gap:8px}
      .trust-item{font-size:13px}
      .dash-grid{grid-template-columns:1fr}
      .panel-card.large{grid-row:auto}
      .section{padding:64px 0}
      .section-sm{padding:54px 0}
      .section-head{margin-bottom:30px;text-align:left}
      .sticky-note,.category-main,.method-card,.cta-box{padding:24px;border-radius:24px}
      .method-steps{grid-template-columns:1fr}
      .cover-grid{grid-template-columns:1fr}
      .metrics{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .cta-actions{justify-content:stretch}
    }
    @media (max-width:420px){
      .brand-mark{width:31px;height:31px;border-radius:11px}
      .mobile-brand .brand-title{font-size:14px;line-height:1.22}
      .hero h1{font-size:32px}
      .dash-head{align-items:flex-start;flex-direction:column}
      .story-card{grid-template-columns:1fr;padding:20px}
      .feature-item{flex-direction:column}
      .copyright{font-size:13px}
    }

/* roulang page: category1 */
:root{
      --primary:#2D6CDF;
      --primary-deep:#1E4FA8;
      --primary-soft:#EEF5FF;
      --primary-pale:#F6F9FE;
      --accent:#13A6A6;
      --accent-soft:#E9FAF8;
      --warning-soft:#FFF7E8;
      --text:#27364A;
      --muted:#66758A;
      --light-muted:#8B99AA;
      --border:#DCE7F5;
      --border-soft:rgba(120,155,205,.18);
      --white:#FFFFFF;
      --footer:#EEF5FF;
      --shadow:0 12px 30px rgba(36,74,125,.08);
      --shadow-hover:0 18px 45px rgba(36,74,125,.13);
      --radius-sm:10px;
      --radius-md:16px;
      --radius-lg:24px;
      --radius-xl:32px;
      --container:1180px;
      --transition:all .25s ease;
    }

    *{box-sizing:border-box;}
    html{scroll-behavior:smooth;}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
      color:var(--text);
      background:linear-gradient(180deg,#F6F9FE 0%,#FFFFFF 38%,#F7FAFF 100%);
      font-size:16px;
      line-height:1.75;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none;transition:var(--transition);}
    img{max-width:100%;height:auto;display:block;}
    button,input,textarea,select{font:inherit;}
    ::selection{background:rgba(45,108,223,.14);color:var(--primary-deep);}
    .container{max-width:var(--container);}

    .site-header{
      position:sticky;
      top:0;
      z-index:1000;
      background:rgba(255,255,255,.96);
      border-bottom:1px solid rgba(220,231,245,.85);
      box-shadow:0 8px 26px rgba(39,54,74,.04);
      backdrop-filter:saturate(140%) blur(10px);
    }
    .navbar{padding:14px 0;}
    .desktop-nav-shell{
      width:100%;
      display:grid;
      grid-template-columns:1fr auto 1fr;
      align-items:center;
      gap:28px;
    }
    .nav-side{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .nav-side.left{justify-content:flex-end;}
    .nav-side.right{justify-content:flex-start;}
    .nav-link-custom{
      position:relative;
      display:inline-flex;
      align-items:center;
      min-height:42px;
      padding:8px 14px;
      border-radius:999px;
      color:#45566F;
      font-size:15px;
      font-weight:600;
      white-space:nowrap;
      outline:none;
    }
    .nav-link-custom:hover{
      color:var(--primary);
      background:var(--primary-soft);
      transform:translateY(-1px);
    }
    .nav-link-custom.active{
      color:var(--primary-deep);
      background:#E8F1FF;
      box-shadow:inset 0 0 0 1px rgba(45,108,223,.12);
    }
    .nav-link-custom:focus-visible,
    .btn:focus-visible,
    .navbar-toggler:focus-visible,
    input:focus-visible,
    textarea:focus-visible{
      outline:3px solid rgba(45,108,223,.24);
      outline-offset:3px;
      box-shadow:none;
    }
    .brand-logo,.mobile-brand,.footer-brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
    }
    .brand-logo{
      padding:7px 12px;
      border-radius:999px;
      background:linear-gradient(135deg,#FFFFFF 0%,#EEF5FF 100%);
      border:1px solid var(--border-soft);
      box-shadow:0 10px 28px rgba(45,108,223,.08);
    }
    .brand-logo:hover{transform:translateY(-2px);box-shadow:var(--shadow);}
    .brand-mark{
      width:38px;
      height:38px;
      flex:0 0 38px;
      border-radius:14px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      background:linear-gradient(135deg,var(--primary),#6BA8FF);
      color:#fff;
      font-weight:800;
      font-size:19px;
      box-shadow:0 10px 22px rgba(45,108,223,.22);
    }
    .brand-text{display:flex;flex-direction:column;line-height:1.18;}
    .brand-title{
      font-size:18px;
      font-weight:800;
      color:#1E3558;
      letter-spacing:-.02em;
    }
    .brand-sub{
      margin-top:2px;
      font-size:12px;
      color:var(--muted);
      font-weight:600;
    }
    .mobile-nav-wrap{display:none;}
    .navbar-toggler{
      width:46px;
      height:46px;
      border:1px solid var(--border);
      border-radius:14px;
      background:#fff;
      padding:0;
    }
    .navbar-toggler-icon{
      width:1.25em;
      height:1.25em;
      background-size:100%;
    }
    .mobile-menu{
      margin-top:14px;
      padding:10px;
      background:#fff;
      border:1px solid var(--border-soft);
      border-radius:20px;
      box-shadow:var(--shadow);
    }
    .mobile-menu .nav-link-custom{
      display:flex;
      justify-content:space-between;
      width:100%;
      min-height:46px;
      margin:2px 0;
      border-radius:14px;
    }

    .section{
      padding:86px 0;
      position:relative;
    }
    .section-sm{padding:64px 0;}
    .section-eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      background:#E8F1FF;
      color:var(--primary-deep);
      font-size:13px;
      font-weight:700;
      margin-bottom:16px;
    }
    .section-eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 0 4px rgba(19,166,166,.12);
    }
    .section-title{
      margin:0;
      color:#1F314D;
      font-size:36px;
      line-height:1.22;
      font-weight:800;
      letter-spacing:-.03em;
    }
    .section-desc{
      margin:18px 0 0;
      color:var(--muted);
      font-size:17px;
      max-width:780px;
    }
    .text-center .section-desc{margin-left:auto;margin-right:auto;}

    .page-hero{
      padding:88px 0 72px;
      overflow:hidden;
      background:
        radial-gradient(circle at 82% 24%,rgba(107,168,255,.22),transparent 32%),
        radial-gradient(circle at 14% 18%,rgba(19,166,166,.12),transparent 26%),
        linear-gradient(180deg,#F6F9FE 0%,#FFFFFF 100%);
    }
    .hero-badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 14px;
      border-radius:999px;
      background:#fff;
      border:1px solid var(--border-soft);
      color:var(--primary-deep);
      font-size:14px;
      font-weight:700;
      box-shadow:0 8px 24px rgba(36,74,125,.06);
      margin-bottom:18px;
    }
    .hero-badge span{
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--accent);
    }
    .page-hero h1{
      margin:0;
      max-width:720px;
      font-size:50px;
      line-height:1.14;
      font-weight:800;
      letter-spacing:-.04em;
      color:#1D2F4B;
    }
    .hero-lead{
      margin:22px 0 0;
      max-width:700px;
      color:var(--muted);
      font-size:18px;
      line-height:1.85;
    }
    .hero-actions{
      margin-top:30px;
      display:flex;
      flex-wrap:wrap;
      gap:14px;
    }
    .btn{
      border:0;
      border-radius:999px;
      padding:12px 21px;
      font-size:15px;
      font-weight:700;
      line-height:1.5;
      transition:var(--transition);
    }
    .btn-primary-custom{
      background:linear-gradient(135deg,var(--primary),#4E88F0);
      color:#fff;
      box-shadow:0 12px 24px rgba(45,108,223,.22);
    }
    .btn-primary-custom:hover{
      color:#fff;
      background:linear-gradient(135deg,var(--primary-deep),var(--primary));
      transform:translateY(-2px);
      box-shadow:0 16px 34px rgba(45,108,223,.30);
    }
    .btn-secondary-custom{
      background:#fff;
      color:var(--primary-deep);
      border:1px solid rgba(45,108,223,.22);
      box-shadow:0 8px 22px rgba(36,74,125,.06);
    }
    .btn-secondary-custom:hover{
      background:#EAF2FF;
      color:var(--primary-deep);
      transform:translateY(-2px);
      box-shadow:var(--shadow);
    }
    .text-link{
      display:inline-flex;
      align-items:center;
      gap:6px;
      color:var(--primary-deep);
      font-weight:800;
    }
    .text-link .arrow{transition:var(--transition);}
    .text-link:hover .arrow{transform:translateX(4px);}

    .summary-panel{
      position:relative;
      padding:28px;
      border-radius:var(--radius-xl);
      background:#fff;
      border:1px solid var(--border-soft);
      box-shadow:var(--shadow-hover);
      overflow:hidden;
    }
    .summary-panel::before{
      content:"";
      position:absolute;
      inset:0 0 auto;
      height:8px;
      background:linear-gradient(90deg,var(--primary),#6BA8FF,var(--accent));
    }
    .panel-title{
      margin:8px 0 18px;
      font-size:22px;
      font-weight:800;
      color:#1F314D;
    }
    .summary-list{
      display:grid;
      gap:13px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .summary-list li{
      display:flex;
      gap:12px;
      padding:13px;
      border-radius:16px;
      background:linear-gradient(135deg,#F8FBFF,#FFFFFF);
      border:1px solid var(--border-soft);
    }
    .summary-icon{
      width:34px;
      height:34px;
      border-radius:12px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      flex:0 0 34px;
      background:#E8F1FF;
      color:var(--primary);
      font-weight:800;
    }
    .summary-list strong{display:block;color:#223653;font-weight:800;}
    .summary-list span{display:block;margin-top:2px;color:var(--muted);font-size:14px;line-height:1.6;}
    .panel-foot{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-top:18px;
    }
    .mini-tag,.filter-tag{
      display:inline-flex;
      align-items:center;
      border-radius:999px;
      padding:6px 10px;
      background:var(--primary-soft);
      color:var(--primary-deep);
      font-size:13px;
      font-weight:700;
      border:1px solid rgba(45,108,223,.12);
    }
    .mini-tag.green{background:var(--accent-soft);color:#087E7E;border-color:rgba(19,166,166,.14);}

    .content-note{
      border-radius:var(--radius-lg);
      background:#fff;
      border:1px solid var(--border-soft);
      box-shadow:var(--shadow);
      padding:30px;
      height:100%;
      transition:var(--transition);
    }
    .content-note:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
    .content-note .num{
      width:42px;
      height:42px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border-radius:15px;
      background:var(--primary-soft);
      color:var(--primary);
      font-weight:800;
      margin-bottom:18px;
    }
    .content-note h3{
      margin:0 0 12px;
      font-size:21px;
      font-weight:800;
      color:#1F314D;
    }
    .content-note p{margin:0;color:var(--muted);}

    .filter-board{
      padding:30px;
      border-radius:var(--radius-xl);
      background:linear-gradient(135deg,#FFFFFF 0%,#F6F9FE 100%);
      border:1px solid var(--border-soft);
      box-shadow:var(--shadow);
    }
    .filter-row{
      display:grid;
      grid-template-columns:170px 1fr;
      gap:18px;
      padding:18px 0;
      border-bottom:1px solid var(--border);
    }
    .filter-row:last-child{border-bottom:0;padding-bottom:0;}
    .filter-row:first-child{padding-top:0;}
    .filter-label{
      display:flex;
      align-items:center;
      gap:10px;
      font-weight:800;
      color:#1F314D;
    }
    .filter-dot{
      width:10px;
      height:10px;
      border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 0 5px rgba(45,108,223,.10);
    }
    .filter-tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .filter-tag{
      background:#fff;
      color:#445671;
      padding:7px 12px;
    }
    .filter-tag:hover{
      color:var(--primary-deep);
      border-color:rgba(45,108,223,.26);
      transform:translateY(-1px);
    }

    .recommend-layout{
      display:grid;
      grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
      gap:24px;
      align-items:stretch;
    }
    .feature-card{
      min-height:100%;
      border-radius:var(--radius-xl);
      padding:34px;
      background:
        radial-gradient(circle at 85% 12%,rgba(107,168,255,.25),transparent 30%),
        linear-gradient(135deg,#FFFFFF 0%,#F1F7FF 100%);
      border:1px solid var(--border-soft);
      box-shadow:var(--shadow-hover);
      position:relative;
      overflow:hidden;
    }
    .feature-card::after{
      content:"";
      position:absolute;
      right:-46px;
      bottom:-54px;
      width:180px;
      height:180px;
      border-radius:50%;
      background:rgba(45,108,223,.07);
    }
    .feature-card > *{position:relative;z-index:1;}
    .feature-card .label{
      display:inline-flex;
      align-items:center;
      padding:7px 12px;
      border-radius:999px;
      background:var(--accent-soft);
      color:#087E7E;
      font-size:13px;
      font-weight:800;
      margin-bottom:20px;
    }
    .feature-card h3{
      margin:0;
      font-size:30px;
      line-height:1.24;
      font-weight:800;
      color:#1E3558;
    }
    .feature-card p{
      margin:18px 0 0;
      color:var(--muted);
      max-width:520px;
    }
    .feature-metrics{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
      margin-top:28px;
    }
    .metric-box{
      padding:14px;
      border-radius:18px;
      background:rgba(255,255,255,.78);
      border:1px solid rgba(220,231,245,.85);
    }
    .metric-box strong{
      display:block;
      font-size:22px;
      color:var(--primary-deep);
      font-weight:800;
      line-height:1.2;
    }
    .metric-box span{
      display:block;
      margin-top:5px;
      color:var(--muted);
      font-size:13px;
      line-height:1.45;
    }
    .side-list{
      display:grid;
      gap:14px;
    }
    .side-card{
      display:flex;
      align-items:flex-start;
      gap:14px;
      padding:18px;
      border-radius:20px;
      background:#fff;
      border:1px solid var(--border-soft);
      box-shadow:var(--shadow);
      transition:var(--transition);
    }
    .side-card:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(45,108,223,.24);
    }
    .side-card .icon{
      width:42px;
      height:42px;
      border-radius:15px;
      flex:0 0 42px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      background:var(--primary-soft);
      color:var(--primary);
      font-weight:800;
    }
    .side-card h3{
      margin:0 0 6px;
      font-size:18px;
      font-weight:800;
      color:#1F314D;
    }
    .side-card p{
      margin:0;
      color:var(--muted);
      font-size:15px;
      line-height:1.65;
    }

    .guide-strip{
      border-radius:var(--radius-xl);
      padding:30px;
      background:#fff;
      border:1px solid var(--border-soft);
      box-shadow:var(--shadow);
    }
    .guide-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
    }
    .guide-item{
      position:relative;
      padding:22px 18px;
      border-radius:22px;
      background:linear-gradient(180deg,#F8FBFF,#FFFFFF);
      border:1px solid var(--border-soft);
      transition:var(--transition);
    }
    .guide-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);}
    .guide-index{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:34px;
      height:34px;
      border-radius:12px;
      background:var(--primary);
      color:#fff;
      font-weight:800;
      margin-bottom:14px;
    }
    .guide-item h3{margin:0 0 8px;font-size:18px;font-weight:800;}
    .guide-item p{margin:0;color:var(--muted);font-size:14px;line-height:1.65;}

    .accordion{display:grid;gap:12px;}
    .accordion-item{
      border:1px solid var(--border-soft)!important;
      border-radius:18px!important;
      overflow:hidden;
      background:#fff;
      box-shadow:0 10px 26px rgba(36,74,125,.05);
    }
    .accordion-button{
      min-height:58px;
      padding:18px 22px;
      color:#20344F;
      background:#fff;
      font-weight:800;
      box-shadow:none!important;
      border:0;
    }
    .accordion-button:not(.collapsed){
      color:var(--primary-deep);
      background:#EAF2FF;
    }
    .accordion-button::after{
      filter:none;
      opacity:.75;
    }
    .accordion-body{
      padding:0 22px 22px;
      color:var(--muted);
      line-height:1.8;
    }

    .cta-panel{
      position:relative;
      overflow:hidden;
      border-radius:32px;
      padding:48px;
      background:
        radial-gradient(circle at 90% 20%,rgba(107,168,255,.28),transparent 32%),
        linear-gradient(135deg,#EEF5FF 0%,#FFFFFF 64%,#E9FAF8 100%);
      border:1px solid var(--border-soft);
      box-shadow:var(--shadow-hover);
    }
    .cta-panel h2{
      margin:0;
      font-size:34px;
      line-height:1.25;
      font-weight:800;
      color:#1E3558;
    }
    .cta-panel p{
      margin:16px 0 0;
      color:var(--muted);
      max-width:720px;
      font-size:17px;
    }
    .cta-actions{
      margin-top:26px;
      display:flex;
      flex-wrap:wrap;
      gap:14px;
    }
    .trust-line{
      margin-top:18px;
      color:#6A7890;
      font-size:14px;
    }

    .site-footer{
      margin-top:20px;
      padding:58px 0 26px;
      background:var(--footer);
      border-top:1px solid rgba(220,231,245,.9);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.5fr .75fr 1fr;
      gap:38px;
      align-items:start;
    }
    .footer-brand-name{
      font-size:18px;
      font-weight:800;
      color:#1E3558;
    }
    .footer-desc,.footer-note{
      margin:18px 0 0;
      color:var(--muted);
      line-height:1.8;
      max-width:520px;
    }
    .footer-title{
      color:#1F314D;
      font-weight:800;
      margin-bottom:14px;
      font-size:16px;
    }
    .footer-links{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:#56677F;
      font-weight:600;
    }
    .footer-links a:hover{
      color:var(--primary);
      padding-left:4px;
    }
    .copyright{
      margin-top:36px;
      padding-top:20px;
      border-top:1px solid rgba(120,155,205,.22);
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      color:#6A7890;
      font-size:14px;
    }

    @media (max-width: 1199.98px){
      .page-hero h1{font-size:44px;}
      .desktop-nav-shell{gap:16px;}
      .nav-link-custom{padding:8px 10px;}
      .brand-title{font-size:16px;}
      .guide-grid{grid-template-columns:repeat(2,1fr);}
    }
    @media (max-width: 991.98px){
      .desktop-nav-shell{display:none;}
      .mobile-nav-wrap{display:block;}
      .navbar{padding:12px 0;}
      .page-hero{padding:68px 0 58px;}
      .page-hero h1{font-size:38px;}
      .summary-panel{margin-top:28px;}
      .section{padding:68px 0;}
      .section-sm{padding:52px 0;}
      .section-title{font-size:30px;}
      .recommend-layout{grid-template-columns:1fr;}
      .footer-grid{grid-template-columns:1fr 1fr;}
    }
    @media (max-width: 767.98px){
      body{font-size:15px;}
      .container{padding-left:18px;padding-right:18px;}
      .brand-title{font-size:15px;}
      .brand-sub{font-size:11px;}
      .brand-mark{width:36px;height:36px;flex-basis:36px;border-radius:13px;}
      .page-hero{padding:54px 0 46px;}
      .page-hero h1{font-size:34px;letter-spacing:-.03em;}
      .hero-lead{font-size:16px;}
      .hero-actions,.cta-actions{flex-direction:column;}
      .btn{width:100%;justify-content:center;padding:12px 18px;}
      .summary-panel,.filter-board,.feature-card,.guide-strip,.cta-panel{padding:24px;}
      .filter-row{grid-template-columns:1fr;gap:12px;}
      .feature-metrics{grid-template-columns:1fr;}
      .guide-grid{grid-template-columns:1fr;}
      .footer-grid{grid-template-columns:1fr;gap:28px;}
      .copyright{flex-direction:column;}
    }
    @media (max-width: 420px){
      .mobile-brand{gap:9px;}
      .brand-title{font-size:13px;max-width:210px;line-height:1.2;}
      .page-hero h1{font-size:31px;}
      .section-title,.cta-panel h2{font-size:27px;}
      .side-card{padding:16px;}
      .filter-tags{gap:8px;}
    }

/* roulang page: category2 */
:root {
      --color-primary: #2d6cdf;
      --color-primary-deep: #1e4fa8;
      --color-secondary: #6ba8ff;
      --color-accent: #13a6a6;
      --color-bg: #f6f9fe;
      --color-bg-soft: #eef5ff;
      --color-white: #ffffff;
      --color-text: #27364a;
      --color-muted: #66758a;
      --color-border: #dce7f5;
      --color-warning-soft: #fff7e8;
      --shadow-card: 0 12px 30px rgba(36, 74, 125, 0.08);
      --shadow-hover: 0 18px 45px rgba(36, 74, 125, 0.13);
      --radius-sm: 10px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-pill: 999px;
      --font-main: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: var(--font-main);
      color: var(--color-text);
      background: linear-gradient(180deg, #f8fbff 0%, #ffffff 42%, #f6f9fe 100%);
      font-size: 16px;
      line-height: 1.75;
      overflow-x: hidden;
      text-rendering: optimizeLegibility;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color .2s ease, background-color .2s ease, border-color .2s ease, transform .2s ease;
    }

    img, svg {
      max-width: 100%;
      height: auto;
    }

    button, input, textarea, select {
      font-family: inherit;
    }

    ::selection {
      background: rgba(45, 108, 223, .16);
      color: var(--color-primary-deep);
    }

    .container {
      max-width: 1180px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1020;
      background: rgba(255, 255, 255, .96);
      border-bottom: 1px solid rgba(220, 231, 245, .82);
      box-shadow: 0 8px 24px rgba(31, 77, 135, .05);
      backdrop-filter: blur(10px);
    }

    .navbar {
      padding: 14px 0;
    }

    .desktop-nav-shell {
      width: 100%;
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      align-items: center;
      gap: 28px;
    }

    .nav-side {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .nav-side.left {
      justify-content: flex-end;
    }

    .nav-side.right {
      justify-content: flex-start;
    }

    .nav-link-custom {
      position: relative;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      padding: 9px 14px;
      border-radius: var(--radius-pill);
      color: #45566f;
      font-size: 15px;
      font-weight: 600;
      white-space: nowrap;
    }

    .nav-link-custom:hover,
    .nav-link-custom:focus-visible {
      color: var(--color-primary);
      background: rgba(107, 168, 255, .12);
      outline: none;
    }

    .nav-link-custom.active {
      color: var(--color-primary-deep);
      background: #eef5ff;
    }

    .nav-link-custom.active::after {
      content: "";
      position: absolute;
      left: 50%;
      bottom: 5px;
      width: 18px;
      height: 3px;
      border-radius: 9px;
      background: var(--color-primary);
      transform: translateX(-50%);
    }

    .brand-logo,
    .mobile-brand,
    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      flex: 0 0 42px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 14px;
      color: #fff;
      font-weight: 800;
      font-size: 20px;
      background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
      box-shadow: 0 10px 22px rgba(45, 108, 223, .22);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.15;
    }

    .brand-title {
      color: #1f3150;
      font-weight: 800;
      font-size: 18px;
      letter-spacing: -.02em;
    }

    .brand-sub {
      margin-top: 4px;
      color: var(--color-muted);
      font-size: 12px;
      font-weight: 600;
    }

    .mobile-nav-wrap {
      display: none;
    }

    .navbar-toggler {
      border: 1px solid var(--color-border);
      border-radius: 14px;
      padding: 9px 11px;
      box-shadow: none !important;
      background: #fff;
    }

    .navbar-toggler:focus-visible {
      outline: 3px solid rgba(45, 108, 223, .18);
    }

    .mobile-menu {
      margin-top: 14px;
      padding: 10px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      background: #fff;
      box-shadow: var(--shadow-card);
    }

    .mobile-menu .nav-link-custom {
      width: 100%;
      justify-content: flex-start;
      min-height: 46px;
      margin: 2px 0;
      padding-left: 16px;
    }

    .page-hero {
      position: relative;
      padding: 92px 0 72px;
      overflow: hidden;
      background:
        radial-gradient(circle at 12% 8%, rgba(107, 168, 255, .18), transparent 32%),
        radial-gradient(circle at 86% 18%, rgba(19, 166, 166, .12), transparent 30%),
        linear-gradient(180deg, #f7fbff 0%, #ffffff 100%);
    }

    .page-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(45, 108, 223, .05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(45, 108, 223, .05) 1px, transparent 1px);
      background-size: 34px 34px;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.65), transparent 80%);
      pointer-events: none;
    }

    .hero-inner {
      position: relative;
      z-index: 1;
      max-width: 920px;
      margin: 0 auto;
      text-align: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 14px;
      border: 1px solid rgba(45, 108, 223, .16);
      border-radius: var(--radius-pill);
      background: rgba(255, 255, 255, .82);
      color: var(--color-primary-deep);
      font-size: 14px;
      font-weight: 700;
      box-shadow: 0 8px 22px rgba(36, 74, 125, .06);
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--color-accent);
      box-shadow: 0 0 0 5px rgba(19, 166, 166, .12);
    }

    h1, h2, h3, h4 {
      margin: 0;
      color: #1f3150;
      letter-spacing: -.025em;
      line-height: 1.2;
    }

    h1 {
      margin-top: 22px;
      font-size: clamp(34px, 5vw, 54px);
      font-weight: 800;
    }

    .hero-desc {
      max-width: 790px;
      margin: 22px auto 0;
      color: var(--color-muted);
      font-size: 18px;
      line-height: 1.85;
    }

    .safe-tags {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 30px;
    }

    .safe-tag,
    .mini-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 13px;
      border-radius: var(--radius-pill);
      background: #fff;
      border: 1px solid rgba(120, 155, 205, .22);
      color: #496179;
      font-size: 14px;
      font-weight: 700;
      box-shadow: 0 8px 20px rgba(36, 74, 125, .05);
    }

    .safe-tag::before,
    .mini-badge::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--color-secondary);
    }

    .hero-panel {
      max-width: 880px;
      margin: 42px auto 0;
      padding: 22px;
      border: 1px solid rgba(120, 155, 205, .2);
      border-radius: 28px;
      background: rgba(255, 255, 255, .88);
      box-shadow: var(--shadow-card);
      text-align: left;
    }

    .panel-row {
      display: grid;
      grid-template-columns: 1.2fr .8fr;
      gap: 18px;
      align-items: stretch;
    }

    .status-card {
      padding: 22px;
      border-radius: 22px;
      background: linear-gradient(135deg, #f4f9ff 0%, #ffffff 100%);
      border: 1px solid rgba(120, 155, 205, .2);
    }

    .status-title {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      color: #223958;
    }

    .status-pill {
      padding: 5px 10px;
      border-radius: var(--radius-pill);
      background: rgba(19, 166, 166, .1);
      color: #0b7777;
      font-size: 12px;
      font-weight: 800;
    }

    .meter-list {
      margin: 20px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 15px;
    }

    .meter-item {
      display: grid;
      gap: 8px;
    }

    .meter-label {
      display: flex;
      justify-content: space-between;
      color: #4c627d;
      font-size: 14px;
      font-weight: 700;
    }

    .meter {
      height: 9px;
      border-radius: var(--radius-pill);
      background: #e7effb;
      overflow: hidden;
    }

    .meter span {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    }

    .quick-note {
      display: grid;
      gap: 14px;
    }

    .quick-note-item {
      padding: 18px;
      border-radius: 20px;
      background: #fff;
      border: 1px solid rgba(120, 155, 205, .2);
      box-shadow: 0 10px 22px rgba(36, 74, 125, .05);
    }

    .quick-note-item strong {
      display: block;
      color: #243a59;
      font-size: 16px;
      margin-bottom: 4px;
    }

    .quick-note-item span {
      color: var(--color-muted);
      font-size: 14px;
    }

    .section {
      padding: 88px 0;
    }

    .section-soft {
      background: var(--color-bg);
    }

    .section-head {
      max-width: 760px;
      margin-bottom: 38px;
    }

    .section-head.center {
      margin-left: auto;
      margin-right: auto;
      text-align: center;
    }

    .section-kicker {
      display: inline-flex;
      margin-bottom: 12px;
      padding: 6px 12px;
      border-radius: var(--radius-pill);
      background: rgba(45, 108, 223, .08);
      color: var(--color-primary-deep);
      font-size: 13px;
      font-weight: 800;
    }

    .section-title {
      font-size: clamp(28px, 4vw, 38px);
      font-weight: 800;
    }

    .section-desc {
      margin: 16px 0 0;
      color: var(--color-muted);
      font-size: 17px;
      line-height: 1.85;
    }

    .principle-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 22px;
    }

    .principle-card {
      position: relative;
      min-height: 245px;
      padding: 26px 24px;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(120, 155, 205, .2);
      background: #fff;
      box-shadow: var(--shadow-card);
      overflow: hidden;
      transition: transform .24s ease, box-shadow .24s ease, border-color .24s ease;
    }

    .principle-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(45, 108, 223, .25);
    }

    .principle-card::after {
      content: "";
      position: absolute;
      right: -34px;
      bottom: -34px;
      width: 112px;
      height: 112px;
      border-radius: 50%;
      background: rgba(107, 168, 255, .1);
    }

    .card-index {
      width: 46px;
      height: 46px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 16px;
      background: #eef5ff;
      color: var(--color-primary-deep);
      font-weight: 800;
      margin-bottom: 20px;
    }

    .principle-card h3 {
      font-size: 21px;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .principle-card p {
      position: relative;
      z-index: 1;
      margin: 0;
      color: var(--color-muted);
      font-size: 15.5px;
    }

    .flow-wrap {
      display: grid;
      grid-template-columns: .86fr 1.14fr;
      gap: 34px;
      align-items: start;
    }

    .flow-summary {
      position: sticky;
      top: 106px;
      padding: 30px;
      border-radius: 28px;
      background: linear-gradient(135deg, #eef5ff, #ffffff);
      border: 1px solid rgba(120, 155, 205, .2);
      box-shadow: var(--shadow-card);
    }

    .flow-summary h2 {
      font-size: 32px;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .flow-summary p {
      margin: 0;
      color: var(--color-muted);
    }

    .flow-points {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 22px;
    }

    .flow-list {
      position: relative;
      display: grid;
      gap: 18px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .flow-step {
      position: relative;
      display: grid;
      grid-template-columns: 64px 1fr;
      gap: 18px;
      padding: 24px;
      border: 1px solid rgba(120, 155, 205, .2);
      border-radius: var(--radius-lg);
      background: #fff;
      box-shadow: var(--shadow-card);
      transition: transform .24s ease, box-shadow .24s ease;
    }

    .flow-step:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
    }

    .step-num {
      width: 54px;
      height: 54px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 18px;
      background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
      color: #fff;
      font-weight: 800;
      box-shadow: 0 12px 22px rgba(45, 108, 223, .2);
    }

    .flow-step h3 {
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .flow-step p {
      margin: 0;
      color: var(--color-muted);
    }

    .compare-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 26px;
    }

    .compare-card {
      padding: 30px;
      border-radius: 28px;
      border: 1px solid rgba(120, 155, 205, .2);
      background: #fff;
      box-shadow: var(--shadow-card);
    }

    .compare-card.optimized {
      background: linear-gradient(135deg, #f4f9ff 0%, #ffffff 62%);
      border-color: rgba(45, 108, 223, .24);
    }

    .compare-label {
      display: inline-flex;
      padding: 7px 12px;
      border-radius: var(--radius-pill);
      font-size: 13px;
      font-weight: 800;
      margin-bottom: 18px;
    }

    .compare-card.traditional .compare-label {
      background: var(--color-warning-soft);
      color: #9a640f;
    }

    .compare-card.optimized .compare-label {
      background: rgba(19, 166, 166, .1);
      color: #0b7777;
    }

    .compare-card h3 {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .compare-list {
      margin: 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 14px;
    }

    .compare-list li {
      position: relative;
      padding-left: 24px;
      color: var(--color-muted);
    }

    .compare-list li::before {
      content: "";
      position: absolute;
      left: 0;
      top: .72em;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--color-secondary);
    }

    .compare-card.optimized .compare-list li::before {
      background: var(--color-accent);
    }

    .detail-band {
      padding: 34px;
      border-radius: 28px;
      background: linear-gradient(135deg, #ffffff 0%, #eef5ff 100%);
      border: 1px solid rgba(120, 155, 205, .2);
      box-shadow: var(--shadow-card);
    }

    .detail-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }

    .detail-item {
      padding: 22px;
      border-radius: 20px;
      background: rgba(255, 255, 255, .78);
      border: 1px solid rgba(120, 155, 205, .18);
    }

    .detail-item strong {
      display: block;
      color: #223958;
      font-size: 18px;
      margin-bottom: 8px;
    }

    .detail-item p {
      margin: 0;
      color: var(--color-muted);
      font-size: 15px;
    }

    .accordion {
      display: grid;
      gap: 12px;
    }

    .accordion-item {
      border: 1px solid rgba(120, 155, 205, .22) !important;
      border-radius: var(--radius-md) !important;
      background: #fff;
      overflow: hidden;
      box-shadow: 0 8px 20px rgba(36, 74, 125, .05);
    }

    .accordion-button {
      min-height: 58px;
      padding: 18px 22px;
      color: #243a59;
      background: #fff;
      font-weight: 800;
      box-shadow: none !important;
    }

    .accordion-button:not(.collapsed) {
      color: var(--color-primary-deep);
      background: #eef5ff;
    }

    .accordion-button:focus {
      border-color: transparent;
      box-shadow: inset 0 0 0 3px rgba(45, 108, 223, .13) !important;
    }

    .accordion-button::after {
      filter: hue-rotate(180deg) saturate(1.2);
    }

    .accordion-body {
      padding: 0 22px 20px;
      color: var(--color-muted);
      line-height: 1.85;
    }

    .cta-section {
      padding: 0 0 88px;
      background: var(--color-bg);
    }

    .cta-card {
      position: relative;
      overflow: hidden;
      padding: 46px;
      border-radius: 30px;
      border: 1px solid rgba(120, 155, 205, .22);
      background:
        radial-gradient(circle at 86% 20%, rgba(19, 166, 166, .14), transparent 30%),
        linear-gradient(135deg, #eef5ff 0%, #ffffff 72%);
      box-shadow: var(--shadow-card);
    }

    .cta-card::after {
      content: "";
      position: absolute;
      right: -70px;
      bottom: -70px;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      background: rgba(45, 108, 223, .08);
    }

    .cta-content {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 28px;
      align-items: center;
    }

    .cta-card h2 {
      font-size: clamp(28px, 4vw, 38px);
      font-weight: 800;
      margin-bottom: 12px;
    }

    .cta-card p {
      margin: 0;
      color: var(--color-muted);
      max-width: 720px;
    }

    .btn-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .btn-custom {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 12px 20px;
      border-radius: var(--radius-pill);
      font-size: 15px;
      font-weight: 800;
      border: 1px solid transparent;
      transition: transform .22s ease, box-shadow .22s ease, background-color .22s ease, color .22s ease, border-color .22s ease;
      white-space: nowrap;
    }

    .btn-custom:focus-visible {
      outline: 4px solid rgba(45, 108, 223, .18);
      outline-offset: 2px;
    }

    .btn-primary-custom {
      color: #fff;
      background: var(--color-primary);
      box-shadow: 0 12px 24px rgba(45, 108, 223, .23);
    }

    .btn-primary-custom:hover {
      color: #fff;
      background: var(--color-primary-deep);
      transform: translateY(-2px);
      box-shadow: 0 16px 30px rgba(45, 108, 223, .28);
    }

    .btn-secondary-custom {
      color: var(--color-primary-deep);
      background: #fff;
      border-color: rgba(45, 108, 223, .18);
    }

    .btn-secondary-custom:hover {
      color: var(--color-primary-deep);
      background: #eef5ff;
      border-color: rgba(45, 108, 223, .3);
      transform: translateY(-2px);
    }

    .site-footer {
      padding: 58px 0 28px;
      background: #eef5ff;
      border-top: 1px solid rgba(120, 155, 205, .2);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.35fr .75fr 1fr;
      gap: 40px;
      align-items: start;
    }

    .footer-brand-name {
      color: #1f3150;
      font-size: 19px;
      font-weight: 800;
    }

    .footer-desc,
    .footer-note {
      margin: 18px 0 0;
      color: var(--color-muted);
      font-size: 15px;
      line-height: 1.85;
    }

    .footer-title {
      color: #243a59;
      font-weight: 800;
      margin-bottom: 14px;
    }

    .footer-links {
      margin: 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 10px;
    }

    .footer-links a {
      color: var(--color-muted);
      font-weight: 600;
    }

    .footer-links a:hover {
      color: var(--color-primary);
      padding-left: 3px;
    }

    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      margin-top: 42px;
      padding-top: 22px;
      border-top: 1px solid rgba(120, 155, 205, .22);
      color: #6b7c92;
      font-size: 14px;
    }

    @media (max-width: 991.98px) {
      .desktop-nav-shell {
        display: none;
      }

      .mobile-nav-wrap {
        display: block;
      }

      .navbar {
        padding: 12px 0;
      }

      .page-hero {
        padding: 72px 0 56px;
      }

      .panel-row,
      .flow-wrap,
      .compare-grid,
      .cta-content {
        grid-template-columns: 1fr;
      }

      .flow-summary {
        position: static;
      }

      .principle-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .detail-grid,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .cta-content {
        align-items: start;
      }
    }

    @media (max-width: 767.98px) {
      body {
        font-size: 15.5px;
      }

      .brand-title {
        font-size: 15px;
      }

      .brand-sub {
        font-size: 11px;
      }

      .brand-mark {
        width: 38px;
        height: 38px;
        flex-basis: 38px;
      }

      .section {
        padding: 62px 0;
      }

      .hero-desc,
      .section-desc {
        font-size: 16px;
      }

      .hero-panel,
      .detail-band,
      .cta-card {
        padding: 22px;
        border-radius: 24px;
      }

      .principle-grid {
        grid-template-columns: 1fr;
      }

      .principle-card {
        min-height: auto;
      }

      .flow-step {
        grid-template-columns: 1fr;
        gap: 14px;
      }

      .btn-row,
      .btn-custom {
        width: 100%;
      }

      .btn-custom {
        white-space: normal;
      }

      .copyright {
        flex-direction: column;
      }
    }

    @media (max-width: 420px) {
      .mobile-brand {
        gap: 8px;
      }

      .brand-title {
        max-width: 210px;
        line-height: 1.22;
      }

      .safe-tags {
        justify-content: flex-start;
      }

      .hero-inner {
        text-align: left;
      }

      .safe-tag {
        width: 100%;
        justify-content: flex-start;
      }
    }

/* roulang page: category3 */
:root{
      --color-primary:#2D6CDF;
      --color-primary-dark:#1E4FA8;
      --color-secondary:#6BA8FF;
      --color-accent:#13A6A6;
      --color-bg:#F6F9FE;
      --color-bg-soft:#EEF5FF;
      --color-white:#FFFFFF;
      --color-text:#27364A;
      --color-muted:#66758A;
      --color-border:#DCE7F5;
      --color-warm:#FFF7E8;
      --shadow-card:0 12px 30px rgba(36,74,125,.08);
      --shadow-hover:0 18px 45px rgba(36,74,125,.13);
      --radius-sm:10px;
      --radius-md:16px;
      --radius-lg:24px;
      --radius-xl:32px;
      --container:1180px;
      --transition:all .25s ease;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
      color:var(--color-text);
      background:linear-gradient(180deg,#fff 0%,var(--color-bg) 44%,#fff 100%);
      font-size:16px;
      line-height:1.75;
      text-rendering:optimizeLegibility;
    }
    a{
      color:inherit;
      text-decoration:none;
      transition:var(--transition);
    }
    a:hover{color:var(--color-primary)}
    img{max-width:100%;height:auto}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(45,108,223,.16);color:var(--color-primary-dark)}
    .container{
      max-width:var(--container);
      padding-left:22px;
      padding-right:22px;
    }
    .section{
      padding:92px 0;
      position:relative;
    }
    .section-soft{
      background:linear-gradient(180deg,var(--color-bg) 0%,#fff 100%);
    }
    .section-title{
      font-size:36px;
      line-height:1.22;
      font-weight:800;
      letter-spacing:-.02em;
      margin:0 0 16px;
      color:#1F2D42;
    }
    .section-lead{
      color:var(--color-muted);
      max-width:760px;
      font-size:17px;
      margin:0;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      color:var(--color-primary-dark);
      background:rgba(107,168,255,.16);
      border:1px solid rgba(45,108,223,.12);
      font-size:13px;
      font-weight:700;
      margin-bottom:18px;
    }
    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--color-accent);
      box-shadow:0 0 0 4px rgba(19,166,166,.12);
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:1000;
      background:rgba(255,255,255,.96);
      border-bottom:1px solid rgba(220,231,245,.8);
      box-shadow:0 8px 24px rgba(36,74,125,.04);
    }
    .navbar{
      padding:16px 0;
    }
    .desktop-nav-shell{
      display:grid;
      grid-template-columns:1fr auto 1fr;
      align-items:center;
      width:100%;
      gap:28px;
    }
    .nav-side{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .nav-side.left{justify-content:flex-end}
    .nav-side.right{justify-content:flex-start}
    .nav-link-custom{
      position:relative;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:42px;
      padding:9px 14px;
      border-radius:999px;
      color:#45566F;
      font-size:15px;
      font-weight:650;
      white-space:nowrap;
    }
    .nav-link-custom:hover{
      color:var(--color-primary);
      background:rgba(107,168,255,.12);
    }
    .nav-link-custom.active{
      color:var(--color-primary-dark);
      background:rgba(45,108,223,.12);
    }
    .nav-link-custom:focus-visible,
    .btn:focus-visible,
    .form-control:focus,
    .navbar-toggler:focus{
      outline:3px solid rgba(107,168,255,.35);
      outline-offset:3px;
      box-shadow:none;
    }
    .brand-logo,.mobile-brand{
      display:flex;
      align-items:center;
      gap:12px;
      padding:6px 8px;
      border-radius:18px;
    }
    .brand-logo:hover,.mobile-brand:hover{
      background:rgba(238,245,255,.78);
      color:inherit;
    }
    .brand-mark{
      flex:0 0 auto;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:42px;
      height:42px;
      border-radius:14px;
      color:#fff;
      font-weight:900;
      font-size:20px;
      background:linear-gradient(135deg,var(--color-primary),var(--color-accent));
      box-shadow:0 10px 22px rgba(45,108,223,.22);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.22;
    }
    .brand-title{
      color:#1F2D42;
      font-size:19px;
      font-weight:850;
      letter-spacing:-.01em;
    }
    .brand-sub{
      color:var(--color-muted);
      font-size:12px;
      font-weight:600;
      margin-top:2px;
    }
    .mobile-nav-wrap{display:none}
    .navbar-toggler{
      border:1px solid var(--color-border);
      border-radius:14px;
      padding:10px 12px;
      background:#fff;
    }
    .navbar-toggler-icon{
      width:1.25em;
      height:1.25em;
    }
    .mobile-menu{
      margin-top:14px;
      padding:10px;
      background:#fff;
      border:1px solid var(--color-border);
      border-radius:20px;
      box-shadow:var(--shadow-card);
    }
    .mobile-menu .nav-link-custom{
      display:flex;
      justify-content:flex-start;
      width:100%;
      min-height:46px;
      margin:4px 0;
    }

    .btn{
      border:0;
      border-radius:999px;
      padding:12px 22px;
      font-size:15px;
      font-weight:750;
      transition:var(--transition);
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:48px;
    }
    .btn-primary-custom{
      color:#fff;
      background:linear-gradient(135deg,var(--color-primary),#397EEB);
      box-shadow:0 12px 26px rgba(45,108,223,.22);
    }
    .btn-primary-custom:hover{
      color:#fff;
      background:linear-gradient(135deg,var(--color-primary-dark),var(--color-primary));
      transform:translateY(-2px);
      box-shadow:0 16px 34px rgba(45,108,223,.28);
    }
    .btn-secondary-custom{
      color:var(--color-primary-dark);
      background:#fff;
      border:1px solid rgba(45,108,223,.18);
      box-shadow:0 10px 24px rgba(36,74,125,.06);
    }
    .btn-secondary-custom:hover{
      color:var(--color-primary-dark);
      background:var(--color-bg-soft);
      transform:translateY(-2px);
    }
    .text-link{
      color:var(--color-primary);
      font-weight:750;
      display:inline-flex;
      align-items:center;
      gap:6px;
    }
    .text-link span{
      transition:var(--transition);
    }
    .text-link:hover span{
      transform:translateX(3px);
    }

    .hero{
      padding:86px 0 72px;
      overflow:hidden;
      background:
        radial-gradient(circle at 15% 20%, rgba(107,168,255,.22), transparent 30%),
        radial-gradient(circle at 88% 18%, rgba(19,166,166,.12), transparent 28%),
        linear-gradient(180deg,#fff 0%,var(--color-bg) 100%);
      border-bottom:1px solid rgba(220,231,245,.72);
    }
    .hero h1{
      font-size:50px;
      line-height:1.14;
      letter-spacing:-.035em;
      font-weight:900;
      margin:0 0 20px;
      color:#17243A;
    }
    .hero p{
      color:var(--color-muted);
      font-size:18px;
      max-width:690px;
      margin:0 0 28px;
    }
    .hero-actions{
      display:flex;
      align-items:center;
      gap:14px;
      flex-wrap:wrap;
    }
    .hero-bullets{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:28px;
    }
    .hero-bullets span{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:8px 12px;
      border-radius:999px;
      background:#fff;
      color:#526278;
      border:1px solid var(--color-border);
      font-size:13px;
      font-weight:650;
      box-shadow:0 8px 20px rgba(36,74,125,.05);
    }
    .hero-bullets span::before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--color-accent);
    }
    .log-card{
      position:relative;
      padding:24px;
      border-radius:var(--radius-xl);
      background:#fff;
      border:1px solid rgba(120,155,205,.18);
      box-shadow:var(--shadow-card);
      overflow:hidden;
    }
    .log-card::before{
      content:"";
      position:absolute;
      inset:auto -40px -60px auto;
      width:180px;
      height:180px;
      background:radial-gradient(circle,rgba(107,168,255,.2),transparent 70%);
      border-radius:50%;
    }
    .log-card-header{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      margin-bottom:20px;
      position:relative;
      z-index:1;
    }
    .log-title{
      font-size:18px;
      font-weight:850;
      color:#1F2D42;
    }
    .status-pill{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:8px 11px;
      border-radius:999px;
      color:#087D78;
      background:rgba(19,166,166,.1);
      font-size:13px;
      font-weight:800;
      white-space:nowrap;
    }
    .status-pill::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--color-accent);
    }
    .mini-log{
      position:relative;
      z-index:1;
      display:grid;
      gap:13px;
    }
    .mini-log-item{
      padding:15px;
      border-radius:18px;
      border:1px solid var(--color-border);
      background:linear-gradient(180deg,#fff 0%,#FAFCFF 100%);
    }
    .mini-log-item strong{
      display:block;
      margin-bottom:3px;
      color:#1F2D42;
      font-size:15px;
    }
    .mini-log-item span{
      color:var(--color-muted);
      font-size:13px;
    }

    .timeline{
      position:relative;
      display:grid;
      gap:18px;
      margin-top:36px;
    }
    .timeline::before{
      content:"";
      position:absolute;
      left:23px;
      top:20px;
      bottom:20px;
      width:2px;
      background:linear-gradient(180deg,rgba(45,108,223,.36),rgba(19,166,166,.16));
    }
    .timeline-item{
      position:relative;
      display:grid;
      grid-template-columns:48px 1fr;
      gap:18px;
      align-items:start;
    }
    .timeline-index{
      position:relative;
      z-index:1;
      display:flex;
      align-items:center;
      justify-content:center;
      width:48px;
      height:48px;
      border-radius:16px;
      background:#fff;
      color:var(--color-primary);
      border:1px solid rgba(45,108,223,.18);
      box-shadow:0 10px 22px rgba(36,74,125,.08);
      font-weight:900;
    }
    .timeline-body{
      padding:22px;
      background:#fff;
      border:1px solid rgba(120,155,205,.18);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-card);
      transition:var(--transition);
    }
    .timeline-body:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(45,108,223,.28);
    }
    .timeline-body h3{
      margin:0 0 8px;
      font-size:21px;
      line-height:1.35;
      font-weight:850;
      color:#1F2D42;
    }
    .timeline-body p{
      margin:0;
      color:var(--color-muted);
    }
    .timeline-meta{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-top:14px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      padding:6px 10px;
      border-radius:999px;
      background:var(--color-bg-soft);
      border:1px solid var(--color-border);
      color:#50627B;
      font-size:13px;
      font-weight:700;
    }
    .tag.accent{
      color:#087D78;
      background:rgba(19,166,166,.1);
      border-color:rgba(19,166,166,.16);
    }

    .support-strip{
      margin-top:36px;
      border-radius:var(--radius-xl);
      background:#fff;
      border:1px solid rgba(120,155,205,.18);
      box-shadow:var(--shadow-card);
      overflow:hidden;
    }
    .support-step{
      min-height:100%;
      padding:28px 24px;
      border-right:1px solid var(--color-border);
      transition:var(--transition);
    }
    .support-step:hover{
      background:linear-gradient(180deg,#fff,var(--color-bg));
      transform:translateY(-2px);
    }
    .support-step.last{border-right:0}
    .support-icon{
      width:48px;
      height:48px;
      border-radius:17px;
      background:rgba(107,168,255,.16);
      color:var(--color-primary-dark);
      display:flex;
      align-items:center;
      justify-content:center;
      font-size:22px;
      font-weight:900;
      margin-bottom:16px;
    }
    .support-step h3{
      margin:0 0 8px;
      font-size:20px;
      font-weight:850;
      color:#1F2D42;
    }
    .support-step p{
      margin:0;
      color:var(--color-muted);
      font-size:15px;
    }

    .feedback-wrap{
      margin-top:36px;
      display:grid;
      grid-template-columns:minmax(0,1.15fr) minmax(320px,.85fr);
      gap:28px;
      align-items:start;
    }
    .form-card,.guide-card,.trust-card,.faq-card{
      background:#fff;
      border:1px solid rgba(120,155,205,.18);
      border-radius:var(--radius-xl);
      box-shadow:var(--shadow-card);
    }
    .form-card{
      padding:30px;
    }
    .form-label{
      color:#33455E;
      font-weight:750;
      margin-bottom:8px;
    }
    .form-control,.form-select{
      min-height:48px;
      border-radius:14px;
      border:1px solid var(--color-border);
      color:var(--color-text);
      background:#fff;
      padding:11px 14px;
      transition:var(--transition);
    }
    textarea.form-control{
      min-height:132px;
      resize:vertical;
    }
    .form-control:focus,.form-select:focus{
      border-color:var(--color-primary);
      box-shadow:0 0 0 .24rem rgba(107,168,255,.18);
    }
    .form-hint{
      color:var(--color-muted);
      font-size:13px;
      margin-top:10px;
    }
    .guide-card{
      padding:28px;
      position:sticky;
      top:118px;
    }
    .guide-list{
      display:grid;
      gap:14px;
      margin:22px 0 0;
      padding:0;
      list-style:none;
    }
    .guide-list li{
      display:grid;
      grid-template-columns:34px 1fr;
      gap:12px;
      align-items:start;
      color:var(--color-muted);
    }
    .guide-list b{
      display:flex;
      align-items:center;
      justify-content:center;
      width:34px;
      height:34px;
      border-radius:12px;
      background:var(--color-bg-soft);
      color:var(--color-primary-dark);
      font-size:13px;
    }
    .guide-list strong{
      display:block;
      color:#1F2D42;
      margin-bottom:2px;
    }

    .trust-card{
      padding:28px;
      background:linear-gradient(135deg,#fff 0%,var(--color-bg-soft) 100%);
    }
    .trust-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
      margin-top:30px;
    }
    .trust-item{
      padding:22px;
      border-radius:22px;
      background:#fff;
      border:1px solid rgba(120,155,205,.18);
      box-shadow:0 10px 24px rgba(36,74,125,.06);
    }
    .trust-item strong{
      display:block;
      font-size:18px;
      font-weight:850;
      color:#1F2D42;
      margin-bottom:6px;
    }
    .trust-item p{
      margin:0;
      color:var(--color-muted);
      font-size:15px;
    }

    .accordion{
      display:grid;
      gap:13px;
      margin-top:34px;
    }
    .accordion-item{
      border:1px solid rgba(120,155,205,.2)!important;
      border-radius:18px!important;
      overflow:hidden;
      background:#fff;
      box-shadow:0 10px 22px rgba(36,74,125,.05);
    }
    .accordion-button{
      padding:20px 22px;
      color:#1F2D42;
      font-size:17px;
      font-weight:800;
      background:#fff;
      box-shadow:none!important;
    }
    .accordion-button:not(.collapsed){
      color:var(--color-primary-dark);
      background:linear-gradient(180deg,var(--color-bg-soft),#fff);
    }
    .accordion-button::after{
      filter:hue-rotate(180deg) saturate(1.5);
    }
    .accordion-body{
      padding:0 22px 22px;
      color:var(--color-muted);
    }

    .cta{
      padding:0 0 92px;
    }
    .cta-box{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius-xl);
      padding:48px;
      background:
        radial-gradient(circle at 80% 20%,rgba(107,168,255,.24),transparent 34%),
        linear-gradient(135deg,var(--color-bg-soft) 0%,#fff 100%);
      border:1px solid rgba(120,155,205,.18);
      box-shadow:var(--shadow-card);
    }
    .cta-box::before{
      content:"";
      position:absolute;
      width:160px;
      height:160px;
      left:-70px;
      bottom:-80px;
      border-radius:50%;
      background:rgba(19,166,166,.12);
    }
    .cta-box h2{
      position:relative;
      font-size:34px;
      line-height:1.25;
      font-weight:900;
      color:#17243A;
      margin:0 0 14px;
    }
    .cta-box p{
      position:relative;
      color:var(--color-muted);
      max-width:720px;
      margin:0 0 26px;
      font-size:17px;
    }
    .cta-actions{
      position:relative;
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      align-items:center;
    }

    .site-footer{
      background:var(--color-bg-soft);
      border-top:1px solid rgba(220,231,245,.9);
      padding:56px 0 26px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.4fr .7fr 1fr;
      gap:42px;
      align-items:start;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      margin-bottom:16px;
    }
    .footer-brand-name{
      font-size:19px;
      font-weight:900;
      color:#1F2D42;
    }
    .footer-desc,.footer-note{
      color:var(--color-muted);
      margin:0;
      max-width:520px;
      font-size:15px;
    }
    .footer-title{
      color:#1F2D42;
      font-weight:850;
      margin-bottom:15px;
      font-size:16px;
    }
    .footer-links{
      list-style:none;
      margin:0;
      padding:0;
      display:grid;
      gap:9px;
    }
    .footer-links a{
      color:#526278;
      font-weight:650;
      font-size:15px;
    }
    .footer-links a:hover{
      color:var(--color-primary);
      padding-left:3px;
    }
    .copyright{
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      margin-top:40px;
      padding-top:22px;
      border-top:1px solid rgba(120,155,205,.2);
      color:#728096;
      font-size:13px;
    }

    @media (max-width: 1199px){
      .hero h1{font-size:44px}
      .section-title{font-size:33px}
      .desktop-nav-shell{gap:18px}
      .nav-link-custom{padding:9px 11px}
      .brand-title{font-size:17px}
    }
    @media (max-width: 991px){
      .desktop-nav-shell{display:none}
      .mobile-nav-wrap{display:block}
      .navbar{padding:12px 0}
      .hero{padding:64px 0 56px}
      .hero h1{font-size:40px}
      .section{padding:68px 0}
      .feedback-wrap{
        grid-template-columns:1fr;
      }
      .guide-card{
        position:relative;
        top:auto;
      }
      .trust-grid{
        grid-template-columns:1fr;
      }
      .footer-grid{
        grid-template-columns:1fr 1fr;
      }
      .support-step{
        border-right:0;
        border-bottom:1px solid var(--color-border);
      }
      .support-step.last{
        border-bottom:0;
      }
    }
    @media (max-width: 767px){
      .container{padding-left:18px;padding-right:18px}
      .hero h1{font-size:34px}
      .hero p,.section-lead{font-size:16px}
      .section-title{font-size:28px}
      .hero-actions,.cta-actions{align-items:stretch}
      .hero-actions .btn,.cta-actions .btn{
        width:100%;
      }
      .log-card{margin-top:26px;padding:20px;border-radius:24px}
      .timeline::before{left:20px}
      .timeline-item{
        grid-template-columns:42px 1fr;
        gap:14px;
      }
      .timeline-index{
        width:42px;
        height:42px;
        border-radius:14px;
      }
      .timeline-body{padding:18px}
      .form-card{padding:22px}
      .cta{padding-bottom:68px}
      .cta-box{padding:34px 22px}
      .cta-box h2{font-size:28px}
      .footer-grid{
        grid-template-columns:1fr;
        gap:28px;
      }
      .copyright{
        flex-direction:column;
        gap:8px;
      }
    }
    @media (max-width: 420px){
      .brand-mark{width:38px;height:38px;border-radius:13px}
      .brand-title{font-size:15px;line-height:1.25}
      .brand-sub{font-size:11px}
      .hero h1{font-size:32px}
      .section{padding:58px 0}
      .log-card-header{align-items:flex-start;flex-direction:column}
      .hero-bullets span{width:100%}
      .timeline-item{grid-template-columns:1fr}
      .timeline::before{display:none}
    }