/* roulang page: index */
:root{
      --primary:#2563EB;
      --primary-dark:#1D4ED8;
      --primary-soft:#EFF6FF;
      --secondary:#14B8A6;
      --sky:#60A5FA;
      --amber:#F59E0B;
      --ink:#172033;
      --text:#475569;
      --muted:#64748B;
      --light:#F6F9FE;
      --lighter:#F8FAFC;
      --white:#FFFFFF;
      --border:#DCE7F5;
      --border-soft:rgba(148,163,184,.22);
      --footer:#0F172A;
      --shadow:0 12px 32px rgba(37,99,235,.08);
      --shadow-hover:0 18px 44px rgba(37,99,235,.14);
      --radius-sm:12px;
      --radius:18px;
      --radius-lg:28px;
      --container:1180px;
      --transition:all .24s ease;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      color:var(--text);
      background:linear-gradient(180deg,#F8FBFF 0%,#FFFFFF 34%,#F6F9FE 100%);
      line-height:1.75;
      font-size:16px;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img,svg{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer;border:0;background:none}
    ::selection{background:rgba(37,99,235,.14);color:var(--ink)}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,255,255,.92);
      backdrop-filter:saturate(140%) blur(14px);
      border-bottom:1px solid var(--border-soft);
    }
    .nav{
      height:64px;
      display:grid;
      grid-template-columns:auto 1fr auto;
      align-items:center;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:11px;
      min-width:0;
    }
    .brand-mark{
      width:38px;
      height:38px;
      border-radius:14px;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      color:#fff;
      display:grid;
      place-items:center;
      font-weight:800;
      box-shadow:0 10px 24px rgba(37,99,235,.22);
      flex:0 0 auto;
    }
    .brand-text{
      font-weight:800;
      color:var(--ink);
      letter-spacing:-.02em;
      white-space:nowrap;
      max-width:310px;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:6px;
      justify-content:flex-start;
      min-width:0;
    }
    .nav-links a{
      color:#334155;
      font-size:14px;
      font-weight:600;
      padding:8px 12px;
      border-radius:999px;
      transition:var(--transition);
      white-space:nowrap;
    }
    .nav-links a:hover{
      color:var(--primary);
      background:var(--primary-soft);
    }
    .nav-links a.active{
      color:var(--primary);
      background:#EAF2FF;
    }
    .nav-tools{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .search-btn{
      width:40px;
      height:40px;
      border-radius:999px;
      display:grid;
      place-items:center;
      color:#475569;
      border:1px solid var(--border-soft);
      background:#fff;
      transition:var(--transition);
    }
    .search-btn:hover{color:var(--primary);border-color:#BFDBFE;background:#F8FBFF;transform:translateY(-1px)}
    .menu-btn{
      display:none;
      width:44px;
      height:44px;
      border-radius:14px;
      border:1px solid var(--border-soft);
      background:#fff;
      color:var(--ink);
      align-items:center;
      justify-content:center;
    }
    .menu-lines,.menu-lines:before,.menu-lines:after{
      content:"";
      display:block;
      width:18px;
      height:2px;
      border-radius:2px;
      background:currentColor;
      transition:var(--transition);
    }
    .menu-lines:before{transform:translateY(-6px)}
    .menu-lines:after{transform:translateY(4px)}
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      border-radius:999px;
      padding:12px 22px;
      font-weight:700;
      line-height:1.2;
      transition:var(--transition);
      border:1px solid transparent;
      white-space:nowrap;
    }
    .btn-primary{
      background:var(--primary);
      color:#fff;
      box-shadow:0 12px 28px rgba(37,99,235,.20);
    }
    .btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 16px 34px rgba(37,99,235,.26)}
    .btn-secondary{
      background:#fff;
      color:var(--primary);
      border-color:#CFE0F8;
    }
    .btn-secondary:hover{background:var(--primary-soft);transform:translateY(-1px)}
    .btn-text{
      display:inline-flex;
      align-items:center;
      gap:6px;
      color:var(--primary);
      font-weight:700;
      transition:var(--transition);
    }
    .btn-text span{transition:var(--transition)}
    .btn-text:hover span{transform:translateX(3px)}
    .btn:focus-visible,.search-btn:focus-visible,.menu-btn:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
      outline:0;
      box-shadow:0 0 0 4px rgba(37,99,235,.18);
      border-color:rgba(37,99,235,.55);
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      background:#EEF6FF;
      color:#1D4ED8;
      border:1px solid #D9E9FF;
      font-size:13px;
      font-weight:700;
    }
    .dot{
      width:7px;
      height:7px;
      border-radius:999px;
      background:var(--secondary);
      box-shadow:0 0 0 5px rgba(20,184,166,.12);
    }
    .hero{
      position:relative;
      padding:78px 0 94px;
      overflow:hidden;
    }
    .hero:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 82% 20%,rgba(96,165,250,.18),transparent 28%),
        radial-gradient(circle at 55% 82%,rgba(20,184,166,.10),transparent 30%);
      pointer-events:none;
    }
    .hero-grid{
      position:relative;
      display:grid;
      grid-template-columns:5fr 7fr;
      gap:54px;
      align-items:center;
    }
    .hero-copy{max-width:560px}
    h1{
      margin-top:18px;
      color:var(--ink);
      font-size:clamp(34px,4.4vw,56px);
      line-height:1.16;
      letter-spacing:-.045em;
      font-weight:800;
    }
    .hero-subtitle{
      margin-top:22px;
      font-size:18px;
      color:#526174;
      max-width:510px;
      line-height:1.85;
    }
    .hero-actions{
      margin-top:32px;
      display:flex;
      align-items:center;
      gap:14px;
      flex-wrap:wrap;
    }
    .trust-row{
      margin-top:34px;
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
    }
    .trust-item{
      background:#fff;
      border:1px solid var(--border-soft);
      border-radius:16px;
      padding:14px 15px;
      box-shadow:0 8px 22px rgba(37,99,235,.05);
    }
    .trust-item strong{
      display:block;
      color:var(--ink);
      font-size:15px;
      line-height:1.3;
    }
    .trust-item span{
      display:block;
      margin-top:4px;
      color:var(--muted);
      font-size:13px;
      line-height:1.45;
    }
    .magazine-board{
      position:relative;
      min-height:560px;
      border-radius:36px;
      background:
        linear-gradient(90deg,rgba(37,99,235,.06) 1px,transparent 1px),
        linear-gradient(180deg,rgba(37,99,235,.06) 1px,transparent 1px),
        linear-gradient(145deg,#FFFFFF 0%,#F1F7FF 100%);
      background-size:34px 34px,34px 34px,auto;
      border:1px solid var(--border);
      box-shadow:var(--shadow);
      padding:30px;
      overflow:hidden;
    }
    .board-title{
      display:flex;
      justify-content:space-between;
      align-items:flex-start;
      gap:20px;
      margin-bottom:22px;
      position:relative;
      z-index:1;
    }
    .board-title h2{
      color:var(--ink);
      font-size:24px;
      line-height:1.25;
    }
    .board-title small{
      color:var(--muted);
      font-weight:700;
      background:#fff;
      border:1px solid var(--border-soft);
      padding:6px 10px;
      border-radius:999px;
    }
    .visual-collage{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      grid-template-rows:180px 130px 135px;
      gap:16px;
      position:relative;
      z-index:1;
    }
    .mock-card{
      background:#fff;
      border:1px solid var(--border-soft);
      border-radius:24px;
      padding:20px;
      box-shadow:0 14px 34px rgba(37,99,235,.08);
      transition:var(--transition);
      overflow:hidden;
    }
    .mock-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
    .mock-card.large{grid-row:span 2}
    .mock-card.wide{grid-column:span 2}
    .palette{
      display:flex;
      gap:9px;
      margin:16px 0 20px;
    }
    .swatch{height:54px;flex:1;border-radius:15px}
    .swatch:nth-child(1){background:#2563EB}
    .swatch:nth-child(2){background:#60A5FA}
    .swatch:nth-child(3){background:#14B8A6}
    .swatch:nth-child(4){background:#F59E0B}
    .wire-lines{display:grid;gap:10px}
    .wire-lines i{
      display:block;
      height:10px;
      border-radius:999px;
      background:#E7EEF8;
    }
    .wire-lines i:nth-child(1){width:82%;background:#CFE0F8}
    .wire-lines i:nth-child(2){width:62%}
    .wire-lines i:nth-child(3){width:74%}
    .mini-label{
      display:inline-flex;
      padding:5px 9px;
      border-radius:999px;
      color:#0F766E;
      background:#ECFDF5;
      font-size:12px;
      font-weight:800;
      margin-bottom:12px;
    }
    .metric{
      font-size:34px;
      line-height:1;
      color:var(--primary);
      font-weight:800;
      letter-spacing:-.03em;
    }
    .metric-caption{font-size:13px;color:var(--muted);margin-top:9px}
    .flow{
      display:flex;
      align-items:center;
      gap:10px;
      margin-top:12px;
    }
    .flow span{
      flex:1;
      height:42px;
      border-radius:14px;
      background:#EFF6FF;
      color:var(--primary);
      display:grid;
      place-items:center;
      font-size:13px;
      font-weight:800;
      border:1px solid #DCEBFF;
    }
    .floating-note{
      position:absolute;
      right:22px;
      bottom:22px;
      width:210px;
      background:#0F172A;
      color:#fff;
      border-radius:22px;
      padding:18px;
      box-shadow:0 18px 40px rgba(15,23,42,.18);
      z-index:2;
    }
    .floating-note strong{display:block;font-size:15px}
    .floating-note p{margin-top:6px;color:#CBD5E1;font-size:13px;line-height:1.6}
    .section{padding:92px 0}
    .section.soft{background:var(--light)}
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:28px;
      margin-bottom:34px;
    }
    .section-kicker{
      color:var(--primary);
      font-size:13px;
      font-weight:800;
      letter-spacing:.08em;
      margin-bottom:8px;
    }
    .section h2{
      color:var(--ink);
      font-size:clamp(28px,3vw,38px);
      line-height:1.28;
      letter-spacing:-.03em;
    }
    .section-desc{
      max-width:430px;
      color:var(--muted);
      font-size:16px;
      line-height:1.8;
    }
    .intro-strip{
      display:grid;
      grid-template-columns:1fr 1fr 1fr;
      gap:18px;
      margin-top:-38px;
      position:relative;
      z-index:4;
    }
    .intro-card{
      background:#fff;
      border:1px solid var(--border-soft);
      border-radius:24px;
      padding:24px;
      box-shadow:var(--shadow);
    }
    .intro-card b{
      display:block;
      color:var(--ink);
      font-size:18px;
      margin-bottom:8px;
    }
    .intro-card p{color:var(--muted);font-size:14px;line-height:1.7}
    .feature-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr 1fr;
      grid-auto-rows:minmax(178px,auto);
      gap:18px;
    }
    .feature-card{
      background:#fff;
      border:1px solid var(--border-soft);
      border-radius:var(--radius-lg);
      padding:28px;
      box-shadow:var(--shadow);
      transition:var(--transition);
      position:relative;
      overflow:hidden;
    }
    .feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#C7DAF4}
    .feature-card.big{grid-row:span 2;background:linear-gradient(145deg,#FFFFFF 0%,#F0F7FF 100%)}
    .feature-card.wide{grid-column:span 2;display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:center}
    .feature-number{
      width:48px;
      height:48px;
      border-radius:18px;
      display:grid;
      place-items:center;
      color:var(--primary);
      background:#EAF2FF;
      font-weight:800;
      margin-bottom:18px;
    }
    .feature-card.wide .feature-number{margin-bottom:0}
    .feature-card h3{color:var(--ink);font-size:22px;line-height:1.3;margin-bottom:10px}
    .feature-card p{color:var(--muted);font-size:15px;line-height:1.75}
    .category-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:20px;
    }
    .category-card{
      background:#fff;
      border:1px solid var(--border-soft);
      border-radius:28px;
      padding:28px;
      box-shadow:var(--shadow);
      transition:var(--transition);
      min-height:290px;
      display:flex;
      flex-direction:column;
    }
    .category-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#BED7F7}
    .category-icon{
      width:52px;
      height:52px;
      border-radius:20px;
      background:linear-gradient(135deg,#EFF6FF,#E0F2FE);
      color:var(--primary);
      display:grid;
      place-items:center;
      margin-bottom:20px;
    }
    .category-card h3{color:var(--ink);font-size:23px;margin-bottom:12px;line-height:1.3}
    .category-card p{color:var(--muted);font-size:15px;line-height:1.75;margin-bottom:20px}
    .category-card .btn-text{margin-top:auto}
    .masonry{
      columns:3 280px;
      column-gap:20px;
    }
    .case-card{
      break-inside:avoid;
      display:inline-block;
      width:100%;
      margin:0 0 20px;
      background:#fff;
      border:1px solid var(--border-soft);
      border-radius:28px;
      overflow:hidden;
      box-shadow:var(--shadow);
      transition:var(--transition);
    }
    .case-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
    .case-cover{
      height:150px;
      background:
        linear-gradient(135deg,rgba(37,99,235,.88),rgba(20,184,166,.78)),
        repeating-linear-gradient(90deg,rgba(255,255,255,.28) 0 1px,transparent 1px 18px);
      position:relative;
    }
    .case-card.tall .case-cover{height:210px}
    .case-card.short .case-cover{height:120px}
    .case-cover:after{
      content:"Before：内容分散  /  After：入口清晰";
      position:absolute;
      left:18px;
      right:18px;
      bottom:16px;
      background:rgba(255,255,255,.94);
      color:#1E3A8A;
      border-radius:999px;
      padding:8px 12px;
      font-size:12px;
      font-weight:800;
      text-align:center;
    }
    .case-body{padding:23px}
    .case-tag{
      display:inline-flex;
      padding:5px 10px;
      border-radius:999px;
      background:#F0FDFA;
      color:#0F766E;
      font-size:12px;
      font-weight:800;
      margin-bottom:12px;
    }
    .case-body h3{color:var(--ink);font-size:21px;line-height:1.35;margin-bottom:12px}
    .result-list{display:grid;gap:9px;list-style:none}
    .result-list li{
      position:relative;
      padding-left:22px;
      color:var(--muted);
      font-size:14px;
      line-height:1.65;
    }
    .result-list li:before{
      content:"";
      position:absolute;
      left:0;
      top:.78em;
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 0 4px rgba(37,99,235,.10);
    }
    .plan-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:20px;
      align-items:stretch;
    }
    .plan-card{
      position:relative;
      background:#fff;
      border:1px solid var(--border-soft);
      border-radius:30px;
      padding:30px;
      box-shadow:var(--shadow);
      transition:var(--transition);
      display:flex;
      flex-direction:column;
    }
    .plan-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
    .plan-card.recommended{
      border-color:#93C5FD;
      background:linear-gradient(180deg,#FFFFFF 0%,#F0F7FF 100%);
      transform:translateY(-8px);
    }
    .recommend-badge{
      position:absolute;
      top:18px;
      right:18px;
      color:#92400E;
      background:#FEF3C7;
      border:1px solid #FDE68A;
      border-radius:999px;
      padding:5px 10px;
      font-size:12px;
      font-weight:800;
    }
    .plan-card h3{color:var(--ink);font-size:24px;margin-bottom:8px}
    .plan-for{color:var(--muted);font-size:14px;margin-bottom:22px}
    .plan-list{list-style:none;display:grid;gap:12px;margin-bottom:28px}
    .plan-list li{
      color:#475569;
      padding-left:27px;
      position:relative;
      font-size:15px;
    }
    .plan-list li:before{
      content:"✓";
      position:absolute;
      left:0;
      top:0;
      color:var(--secondary);
      font-weight:900;
    }
    .plan-card .btn{margin-top:auto}
    .process-wrap{
      display:grid;
      grid-template-columns:1.1fr 1.4fr;
      gap:34px;
      align-items:start;
    }
    .process-panel{
      background:#0F172A;
      color:#fff;
      border-radius:32px;
      padding:34px;
      min-height:100%;
      position:relative;
      overflow:hidden;
    }
    .process-panel:after{
      content:"";
      position:absolute;
      width:220px;
      height:220px;
      border-radius:50%;
      background:rgba(96,165,250,.20);
      right:-80px;
      bottom:-80px;
    }
    .process-panel h2{color:#fff}
    .process-panel p{margin-top:16px;color:#CBD5E1;max-width:420px}
    .step-list{display:grid;gap:16px}
    .step{
      display:grid;
      grid-template-columns:54px 1fr;
      gap:18px;
      padding:22px;
      border:1px solid var(--border-soft);
      border-radius:24px;
      background:#fff;
      box-shadow:0 10px 26px rgba(37,99,235,.06);
    }
    .step-num{
      width:54px;
      height:54px;
      border-radius:20px;
      background:#EAF2FF;
      color:var(--primary);
      display:grid;
      place-items:center;
      font-weight:900;
    }
    .step h3{color:var(--ink);font-size:19px;margin-bottom:5px}
    .step p{color:var(--muted);font-size:14px;line-height:1.7}
    .faq-grid{
      display:grid;
      grid-template-columns:.9fr 1.4fr;
      gap:34px;
      align-items:start;
    }
    .faq-note{
      background:#fff;
      border:1px solid var(--border-soft);
      border-radius:28px;
      padding:28px;
      box-shadow:var(--shadow);
    }
    .faq-note h2{margin-bottom:12px}
    .faq-list{display:grid;gap:14px}
    .faq-item{
      background:#fff;
      border:1px solid var(--border-soft);
      border-radius:22px;
      overflow:hidden;
      box-shadow:0 8px 22px rgba(37,99,235,.05);
    }
    .faq-question{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      padding:20px 22px;
      text-align:left;
      color:var(--ink);
      font-weight:800;
      transition:var(--transition);
    }
    .faq-question:hover{background:#F8FBFF;color:var(--primary)}
    .faq-icon{
      width:26px;
      height:26px;
      border-radius:999px;
      background:#EFF6FF;
      color:var(--primary);
      display:grid;
      place-items:center;
      flex:0 0 auto;
      transition:var(--transition);
      font-weight:900;
    }
    .faq-answer{
      display:none;
      padding:0 22px 22px;
      color:var(--muted);
      font-size:15px;
      line-height:1.8;
    }
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-icon{transform:rotate(45deg);background:var(--primary);color:#fff}
    .cta-section{padding:94px 0 104px}
    .cta-box{
      display:grid;
      grid-template-columns:1fr .95fr;
      gap:34px;
      align-items:center;
      background:
        radial-gradient(circle at 10% 15%,rgba(96,165,250,.22),transparent 30%),
        linear-gradient(135deg,#EEF6FF 0%,#FFFFFF 100%);
      border:1px solid #D7E7FA;
      border-radius:36px;
      padding:42px;
      box-shadow:var(--shadow);
    }
    .cta-copy h2{
      color:var(--ink);
      font-size:clamp(28px,3vw,40px);
      line-height:1.25;
      letter-spacing:-.035em;
      margin-bottom:16px;
    }
    .cta-copy p{
      max-width:500px;
      color:#526174;
      margin-bottom:24px;
    }
    .cta-points{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      list-style:none;
    }
    .cta-points li{
      padding:8px 12px;
      border-radius:999px;
      background:#fff;
      border:1px solid var(--border-soft);
      color:#334155;
      font-size:13px;
      font-weight:700;
    }
    .contact-form{
      background:#fff;
      border:1px solid var(--border-soft);
      border-radius:28px;
      padding:26px;
      box-shadow:0 16px 38px rgba(37,99,235,.10);
    }
    .form-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:14px;
    }
    .field{display:grid;gap:7px}
    .field.full{grid-column:1/-1}
    label{font-size:13px;color:#334155;font-weight:800}
    input,textarea,select{
      width:100%;
      border:1px solid var(--border);
      background:#fff;
      color:var(--ink);
      border-radius:14px;
      padding:12px 13px;
      min-height:46px;
      transition:var(--transition);
    }
    textarea{min-height:112px;resize:vertical}
    input::placeholder,textarea::placeholder{color:#94A3B8}
    .form-tip{
      margin-top:12px;
      color:var(--muted);
      font-size:12px;
      line-height:1.6;
    }
    .contact-form .btn{width:100%;margin-top:16px}
    .site-footer{
      background:var(--footer);
      color:#CBD5E1;
      padding:58px 0 28px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.45fr .7fr .7fr .9fr;
      gap:34px;
      padding-bottom:36px;
      border-bottom:1px solid rgba(226,232,240,.12);
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:11px;
      margin-bottom:16px;
    }
    .footer-brand .brand-mark{box-shadow:none}
    .footer-brand strong{color:#fff;font-size:17px;line-height:1.35}
    .footer-about{max-width:390px;color:#94A3B8;font-size:14px;line-height:1.8}
    .footer-col h3{
      color:#fff;
      font-size:15px;
      margin-bottom:14px;
    }
    .footer-links{
      list-style:none;
      display:grid;
      gap:9px;
    }
    .footer-links a,.footer-links span{
      color:#94A3B8;
      font-size:14px;
      transition:var(--transition);
    }
    .footer-links a:hover{color:#fff}
    .copyright{
      padding-top:22px;
      display:flex;
      justify-content:space-between;
      gap:20px;
      flex-wrap:wrap;
      color:#94A3B8;
      font-size:13px;
    }
    .mobile-panel{display:none}
    @media (max-width:1024px){
      .container{width:min(100% - 32px,var(--container))}
      .nav{gap:14px}
      .brand-text{max-width:220px}
      .nav-links{gap:2px}
      .nav-links a{padding:8px 9px;font-size:13px}
      .hero-grid{grid-template-columns:1fr 1fr;gap:30px}
      .magazine-board{min-height:520px;padding:24px}
      .intro-strip,.category-grid,.plan-grid{grid-template-columns:1fr 1fr}
      .intro-strip .intro-card:last-child,.category-grid .category-card:last-child,.plan-grid .plan-card:last-child{grid-column:1/-1}
      .feature-grid{grid-template-columns:1fr 1fr}
      .feature-card.big{grid-row:auto}
      .feature-card.wide{grid-column:span 2}
      .process-wrap,.faq-grid,.cta-box{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      .site-header{position:sticky}
      .nav{height:62px;grid-template-columns:1fr auto auto}
      .brand-text{max-width:190px;font-size:14px}
      .nav-links{display:none}
      .search-btn{display:none}
      .nav-tools .btn{padding:10px 14px;font-size:13px}
      .menu-btn{display:flex}
      .mobile-panel{
        display:block;
        max-height:0;
        overflow:hidden;
        transition:max-height .28s ease;
        border-top:1px solid transparent;
      }
      .mobile-panel.open{
        max-height:320px;
        border-top-color:var(--border-soft);
      }
      .mobile-links{
        padding:12px 0 18px;
        display:grid;
        gap:8px;
      }
      .mobile-links a{
        padding:12px 14px;
        border-radius:14px;
        color:#334155;
        font-weight:700;
        background:#fff;
        border:1px solid var(--border-soft);
      }
      .mobile-links a.active{color:var(--primary);background:#EFF6FF;border-color:#BFDBFE}
      .hero{padding:54px 0 72px}
      .hero-grid{grid-template-columns:1fr}
      .hero-subtitle{font-size:16px}
      .trust-row{grid-template-columns:1fr}
      .magazine-board{min-height:auto;border-radius:28px}
      .visual-collage{grid-template-columns:1fr;grid-template-rows:auto}
      .mock-card.large,.mock-card.wide{grid-row:auto;grid-column:auto}
      .floating-note{position:relative;right:auto;bottom:auto;width:auto;margin-top:16px}
      .intro-strip{margin-top:0;grid-template-columns:1fr}
      .intro-strip .intro-card:last-child{grid-column:auto}
      .section{padding:66px 0}
      .section-head{display:block}
      .section-desc{margin-top:12px}
      .feature-grid,.category-grid,.plan-grid{grid-template-columns:1fr}
      .feature-card.wide{grid-column:auto;grid-template-columns:1fr}
      .category-grid .category-card:last-child,.plan-grid .plan-card:last-child{grid-column:auto}
      .plan-card.recommended{transform:none}
      .masonry{columns:1}
      .step{grid-template-columns:1fr}
      .cta-section{padding:68px 0}
      .cta-box{padding:26px;border-radius:28px}
      .form-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
    }
    @media (max-width:520px){
      .container{width:calc(100% - 24px)}
      h1{font-size:32px}
      .brand-mark{width:34px;height:34px;border-radius:12px}
      .brand-text{max-width:150px}
      .hero-actions{display:grid;grid-template-columns:1fr}
      .btn{width:100%}
      .board-title{display:block}
      .board-title small{display:inline-flex;margin-top:10px}
      .magazine-board{padding:18px}
      .feature-card,.category-card,.plan-card,.contact-form{padding:22px}
      .footer-grid{gap:24px}
      .copyright{display:block}
      .copyright span{display:block;margin-top:8px}
    }

/* roulang page: category1 */
:root {
      --primary: #2563EB;
      --primary-dark: #1D4ED8;
      --primary-soft: #EFF6FF;
      --secondary: #14B8A6;
      --sky: #60A5FA;
      --amber: #F59E0B;
      --text: #172033;
      --muted: #475569;
      --light-text: #64748B;
      --faint: #94A3B8;
      --bg: #F6F9FE;
      --bg-soft: #F8FAFC;
      --white: #FFFFFF;
      --border: rgba(148, 163, 184, 0.22);
      --border-strong: #DCE7F5;
      --footer: #0F172A;
      --radius-sm: 12px;
      --radius: 18px;
      --radius-lg: 26px;
      --shadow: 0 12px 32px rgba(37, 99, 235, 0.08);
      --shadow-hover: 0 18px 44px rgba(37, 99, 235, 0.14);
      --container: 1180px;
      --ease: 180ms ease;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      text-size-adjust: 100%;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 8% 4%, rgba(96, 165, 250, 0.15), transparent 28%),
        linear-gradient(180deg, #FFFFFF 0%, var(--bg) 48%, #FFFFFF 100%);
      line-height: 1.75;
      min-width: 320px;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    img, svg {
      display: block;
      max-width: 100%;
    }

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

    button {
      cursor: pointer;
      border: 0;
      background: none;
    }

    input, textarea, select {
      width: 100%;
      border: 1px solid var(--border-strong);
      background: var(--white);
      color: var(--text);
      border-radius: 14px;
      min-height: 46px;
      padding: 12px 14px;
      outline: none;
      transition: border-color var(--ease), box-shadow var(--ease), background var(--ease);
    }

    textarea {
      min-height: 116px;
      resize: vertical;
    }

    input::placeholder, textarea::placeholder {
      color: var(--faint);
    }

    input:focus, textarea:focus, select:focus {
      border-color: rgba(37, 99, 235, 0.62);
      box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.14);
    }

    :focus-visible {
      outline: 3px solid rgba(37, 99, 235, 0.28);
      outline-offset: 3px;
    }

    .container {
      width: min(var(--container), calc(100% - 40px));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(220, 231, 245, 0.84);
    }

    .nav {
      min-height: 64px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      min-width: 0;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--text);
    }

    .brand-mark {
      flex: 0 0 auto;
      width: 38px;
      height: 38px;
      border-radius: 14px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 800;
      background:
        linear-gradient(135deg, var(--primary), var(--secondary));
      box-shadow: 0 10px 24px rgba(37, 99, 235, 0.22);
    }

    .brand-text {
      display: inline-block;
      max-width: 270px;
      overflow: hidden;
      white-space: nowrap;
      text-overflow: ellipsis;
      font-size: 15px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      margin-left: auto;
    }

    .nav-links a,
    .mobile-links a {
      color: #334155;
      font-weight: 600;
      font-size: 14px;
      border-radius: 999px;
      padding: 9px 13px;
      transition: color var(--ease), background var(--ease), transform var(--ease);
    }

    .nav-links a:hover,
    .mobile-links a:hover {
      color: var(--primary);
      background: var(--primary-soft);
    }

    .nav-links a.active,
    .mobile-links a.active {
      color: var(--primary);
      background: var(--primary-soft);
    }

    .nav-tools {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 10px;
    }

    .search-btn {
      width: 42px;
      height: 42px;
      border-radius: 999px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--muted);
      border: 1px solid var(--border);
      background: #fff;
      transition: color var(--ease), border-color var(--ease), background var(--ease), transform var(--ease);
    }

    .search-btn:hover {
      color: var(--primary);
      border-color: rgba(37, 99, 235, 0.36);
      background: var(--primary-soft);
      transform: translateY(-1px);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 12px 22px;
      border-radius: 999px;
      font-weight: 700;
      font-size: 14px;
      line-height: 1.2;
      border: 1px solid transparent;
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), border-color var(--ease), color var(--ease);
      white-space: nowrap;
    }

    .btn-primary {
      color: #fff;
      background: var(--primary);
      box-shadow: 0 12px 24px rgba(37, 99, 235, 0.22);
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-1px);
      box-shadow: 0 16px 32px rgba(37, 99, 235, 0.28);
    }

    .btn-secondary {
      color: var(--primary);
      background: #fff;
      border-color: rgba(37, 99, 235, 0.22);
    }

    .btn-secondary:hover {
      background: var(--primary-soft);
      border-color: rgba(37, 99, 235, 0.36);
      transform: translateY(-1px);
    }

    .text-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--primary);
      font-weight: 700;
    }

    .text-link span {
      transition: transform var(--ease);
    }

    .text-link:hover span {
      transform: translateX(3px);
    }

    .menu-btn {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 999px;
      border: 1px solid var(--border);
      background: #fff;
      position: relative;
    }

    .menu-lines,
    .menu-lines::before,
    .menu-lines::after {
      content: "";
      position: absolute;
      left: 12px;
      right: 12px;
      height: 2px;
      background: var(--text);
      border-radius: 999px;
      transition: transform var(--ease), top var(--ease), opacity var(--ease);
    }

    .menu-lines {
      top: 21px;
    }

    .menu-lines::before {
      left: 0;
      right: 0;
      top: -7px;
    }

    .menu-lines::after {
      left: 0;
      right: 0;
      top: 7px;
    }

    .menu-btn.open .menu-lines {
      transform: rotate(45deg);
    }

    .menu-btn.open .menu-lines::before {
      top: 0;
      opacity: 0;
    }

    .menu-btn.open .menu-lines::after {
      top: 0;
      transform: rotate(-90deg);
    }

    .mobile-panel {
      display: none;
      padding: 0 0 14px;
    }

    .mobile-links {
      display: grid;
      gap: 8px;
      padding: 12px;
      border: 1px solid var(--border);
      border-radius: 20px;
      background: #fff;
      box-shadow: var(--shadow);
    }

    main {
      overflow: hidden;
    }

    .section {
      padding: 92px 0;
    }

    .section-tight {
      padding: 70px 0;
    }

    .section-alt {
      background:
        linear-gradient(180deg, rgba(239, 246, 255, 0.82), rgba(255, 255, 255, 0.95));
      border-top: 1px solid rgba(220, 231, 245, 0.68);
      border-bottom: 1px solid rgba(220, 231, 245, 0.68);
    }

    .eyebrow,
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--primary);
      background: var(--primary-soft);
      border: 1px solid rgba(37, 99, 235, 0.12);
      border-radius: 999px;
      padding: 7px 12px;
      font-size: 13px;
      font-weight: 700;
      line-height: 1.2;
    }

    .badge-teal {
      color: #0F766E;
      background: rgba(20, 184, 166, 0.1);
      border-color: rgba(20, 184, 166, 0.18);
    }

    .badge-amber {
      color: #B45309;
      background: rgba(245, 158, 11, 0.11);
      border-color: rgba(245, 158, 11, 0.20);
    }

    .section-head {
      display: grid;
      grid-template-columns: minmax(0, 0.95fr) minmax(280px, 0.7fr);
      gap: 42px;
      align-items: end;
      margin-bottom: 34px;
    }

    .section-title {
      margin-top: 14px;
      font-size: clamp(28px, 4vw, 38px);
      line-height: 1.25;
      letter-spacing: -0.04em;
      color: var(--text);
    }

    .section-desc {
      color: var(--muted);
      font-size: 16px;
      max-width: 560px;
    }

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

    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      flex-wrap: wrap;
      margin-bottom: 22px;
      color: var(--light-text);
      font-size: 14px;
    }

    .breadcrumb a {
      color: var(--primary);
      font-weight: 700;
    }

    .breadcrumb span {
      color: var(--faint);
    }

    .hero-shell {
      position: relative;
      display: grid;
      grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.78fr);
      gap: 36px;
      align-items: stretch;
      padding: 32px;
      border: 1px solid var(--border);
      border-radius: 32px;
      background:
        linear-gradient(135deg, rgba(255,255,255,0.96), rgba(239,246,255,0.92)),
        radial-gradient(circle at 86% 18%, rgba(20, 184, 166, 0.13), transparent 32%);
      box-shadow: var(--shadow);
    }

    .hero-copy {
      padding: 18px 8px 14px 6px;
    }

    .hero h1 {
      margin-top: 18px;
      max-width: 780px;
      font-size: clamp(34px, 5.2vw, 54px);
      line-height: 1.15;
      letter-spacing: -0.055em;
      color: var(--text);
    }

    .hero p {
      margin-top: 18px;
      max-width: 680px;
      font-size: 17px;
      color: var(--muted);
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
    }

    .hero-notes {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      margin-top: 30px;
      max-width: 760px;
    }

    .note {
      padding: 14px 16px;
      border: 1px solid var(--border);
      background: rgba(255, 255, 255, 0.78);
      border-radius: 18px;
    }

    .note strong {
      display: block;
      color: var(--text);
      font-size: 15px;
      line-height: 1.35;
    }

    .note span {
      display: block;
      margin-top: 3px;
      color: var(--light-text);
      font-size: 13px;
      line-height: 1.5;
    }

    .visual-board {
      position: relative;
      min-height: 430px;
      border-radius: 28px;
      overflow: hidden;
      border: 1px solid rgba(220, 231, 245, 0.92);
      background:
        linear-gradient(rgba(37, 99, 235, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37, 99, 235, 0.05) 1px, transparent 1px),
        #FFFFFF;
      background-size: 22px 22px;
    }

    .palette-card {
      position: absolute;
      left: 24px;
      right: 24px;
      top: 24px;
      padding: 22px;
      border-radius: 24px;
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
    }

    .palette-card h2 {
      font-size: 20px;
      line-height: 1.35;
      letter-spacing: -0.02em;
    }

    .palette-row {
      display: grid;
      grid-template-columns: 1.2fr 0.9fr 0.7fr 0.55fr;
      gap: 10px;
      margin-top: 18px;
    }

    .swatch {
      height: 76px;
      border-radius: 18px;
      border: 1px solid rgba(255, 255, 255, 0.68);
      box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.04);
    }

    .swatch.blue { background: #2563EB; }
    .swatch.teal { background: #14B8A6; }
    .swatch.sky { background: #60A5FA; }
    .swatch.soft { background: #EFF6FF; }

    .component-card {
      position: absolute;
      left: 44px;
      bottom: 32px;
      width: 58%;
      padding: 20px;
      border-radius: 22px;
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-hover);
    }

    .component-bar {
      height: 12px;
      border-radius: 999px;
      background: #E5EDF8;
      margin: 10px 0;
      overflow: hidden;
    }

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

    .floating-chip {
      position: absolute;
      right: 26px;
      padding: 13px 14px;
      border-radius: 18px;
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
      color: var(--text);
      font-size: 13px;
      font-weight: 700;
    }

    .floating-chip.one { top: 186px; }
    .floating-chip.two { bottom: 104px; right: 36px; }
    .floating-chip.three { bottom: 34px; right: 96px; }

    .intro-grid {
      display: grid;
      grid-template-columns: minmax(0, 0.92fr) minmax(300px, 0.72fr);
      gap: 28px;
      align-items: stretch;
    }

    .intro-card,
    .card {
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      background: #fff;
      box-shadow: var(--shadow);
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }

    .card:hover,
    .intro-card:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(37, 99, 235, 0.24);
    }

    .intro-main {
      padding: 34px;
      background:
        linear-gradient(135deg, #fff, rgba(239, 246, 255, 0.8));
    }

    .intro-main h2 {
      font-size: clamp(26px, 3.5vw, 36px);
      line-height: 1.26;
      letter-spacing: -0.04em;
    }

    .intro-main p {
      margin-top: 16px;
      color: var(--muted);
      max-width: 720px;
    }

    .intro-list {
      display: grid;
      gap: 14px;
      padding: 24px;
    }

    .check-item {
      display: grid;
      grid-template-columns: 34px minmax(0, 1fr);
      gap: 12px;
      align-items: start;
      padding: 15px;
      border-radius: 18px;
      background: var(--bg-soft);
      border: 1px solid rgba(220, 231, 245, 0.72);
    }

    .check-icon,
    .icon-box {
      width: 34px;
      height: 34px;
      border-radius: 12px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      background: var(--primary-soft);
      font-weight: 800;
    }

    .check-item h3 {
      font-size: 16px;
      line-height: 1.35;
    }

    .check-item p {
      margin-top: 4px;
      color: var(--light-text);
      font-size: 14px;
      line-height: 1.6;
    }

    .strategy-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 18px;
    }

    .strategy-card {
      padding: 24px;
      min-height: 255px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .strategy-card:nth-child(2) {
      margin-top: 28px;
    }

    .strategy-card:nth-child(3) {
      margin-top: 56px;
    }

    .strategy-card:nth-child(4) {
      margin-top: 18px;
    }

    .strategy-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
    }

    .strategy-num {
      color: var(--faint);
      font-weight: 800;
      font-size: 24px;
      line-height: 1;
    }

    .strategy-card h3 {
      margin-top: 22px;
      font-size: 21px;
      line-height: 1.32;
      letter-spacing: -0.02em;
    }

    .strategy-card p {
      margin-top: 10px;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.72;
    }

    .mini-palette {
      display: flex;
      gap: 7px;
      margin-top: 20px;
    }

    .mini-palette i {
      width: 28px;
      height: 28px;
      border-radius: 10px;
      border: 1px solid rgba(15, 23, 42, 0.05);
    }

    .component-section {
      display: grid;
      grid-template-columns: minmax(280px, 0.68fr) minmax(0, 1fr);
      gap: 28px;
      align-items: start;
    }

    .sticky-summary {
      position: sticky;
      top: 90px;
      padding: 28px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      background:
        linear-gradient(180deg, #fff, rgba(239, 246, 255, 0.76));
      box-shadow: var(--shadow);
    }

    .sticky-summary h2 {
      font-size: 30px;
      line-height: 1.25;
      letter-spacing: -0.04em;
    }

    .sticky-summary p {
      margin-top: 14px;
      color: var(--muted);
    }

    .component-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 18px;
    }

    .component-item {
      padding: 24px;
    }

    .component-item h3 {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 20px;
      line-height: 1.35;
    }

    .component-item p {
      margin-top: 12px;
      color: var(--muted);
      font-size: 15px;
    }

    .demo-line {
      margin-top: 18px;
      height: 10px;
      border-radius: 999px;
      background: #E5EDF8;
      overflow: hidden;
    }

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

    .scenario-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 22px;
      align-items: stretch;
    }

    .scenario-card {
      display: grid;
      grid-template-columns: 116px minmax(0, 1fr);
      gap: 20px;
      padding: 22px;
      overflow: hidden;
    }

    .scenario-cover {
      min-height: 156px;
      border-radius: 22px;
      border: 1px solid rgba(220, 231, 245, 0.86);
      background:
        linear-gradient(135deg, rgba(37, 99, 235, 0.92), rgba(20, 184, 166, 0.76)),
        linear-gradient(#fff, #fff);
      position: relative;
    }

    .scenario-cover::before,
    .scenario-cover::after {
      content: "";
      position: absolute;
      left: 16px;
      right: 16px;
      height: 10px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.68);
    }

    .scenario-cover::before { top: 28px; }
    .scenario-cover::after { top: 50px; width: 58%; right: auto; }

    .scenario-card h3 {
      font-size: 20px;
      line-height: 1.35;
    }

    .scenario-card p {
      margin-top: 10px;
      color: var(--muted);
      font-size: 15px;
    }

    .scenario-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 16px;
    }

    .scenario-tags span {
      padding: 6px 9px;
      border-radius: 999px;
      color: var(--light-text);
      background: var(--bg-soft);
      border: 1px solid rgba(220, 231, 245, 0.82);
      font-size: 12px;
      font-weight: 700;
    }

    .process-strip {
      display: grid;
      grid-template-columns: repeat(5, minmax(0, 1fr));
      gap: 14px;
      counter-reset: step;
    }

    .process-card {
      position: relative;
      padding: 22px 18px;
      border: 1px solid var(--border);
      border-radius: 22px;
      background: #fff;
      box-shadow: var(--shadow);
    }

    .process-card::before {
      counter-increment: step;
      content: "0" counter(step);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 42px;
      height: 42px;
      border-radius: 15px;
      color: #fff;
      background: var(--primary);
      font-weight: 800;
      box-shadow: 0 12px 22px rgba(37, 99, 235, 0.22);
    }

    .process-card h3 {
      margin-top: 18px;
      font-size: 18px;
      line-height: 1.35;
    }

    .process-card p {
      margin-top: 8px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.65;
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: minmax(280px, 0.56fr) minmax(0, 1fr);
      gap: 30px;
      align-items: start;
    }

    .faq-intro {
      padding: 28px;
      border-radius: var(--radius-lg);
      background: var(--footer);
      color: #fff;
      box-shadow: 0 18px 40px rgba(15, 23, 42, 0.18);
    }

    .faq-intro h2 {
      font-size: 30px;
      line-height: 1.25;
      letter-spacing: -0.04em;
    }

    .faq-intro p {
      margin-top: 14px;
      color: rgba(226, 232, 240, 0.86);
    }

    .faq-list {
      display: grid;
      gap: 12px;
    }

    .faq-item {
      border: 1px solid var(--border);
      border-radius: 20px;
      background: #fff;
      overflow: hidden;
      box-shadow: 0 8px 22px rgba(37, 99, 235, 0.06);
    }

    .faq-question {
      width: 100%;
      padding: 20px 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      color: var(--text);
      font-weight: 800;
      text-align: left;
      transition: background var(--ease), color var(--ease);
    }

    .faq-question:hover {
      background: var(--primary-soft);
      color: var(--primary);
    }

    .faq-question .plus {
      flex: 0 0 auto;
      width: 28px;
      height: 28px;
      border-radius: 999px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      background: var(--primary-soft);
      font-size: 20px;
      line-height: 1;
      transition: transform var(--ease);
    }

    .faq-item.open .plus {
      transform: rotate(45deg);
    }

    .faq-answer {
      display: none;
      padding: 0 22px 22px;
      color: var(--muted);
      font-size: 15px;
    }

    .faq-item.open .faq-answer {
      display: block;
    }

    .cta-panel {
      display: grid;
      grid-template-columns: minmax(0, 0.92fr) minmax(340px, 0.66fr);
      gap: 30px;
      align-items: center;
      padding: 36px;
      border-radius: 32px;
      border: 1px solid rgba(37, 99, 235, 0.14);
      background:
        radial-gradient(circle at 8% 16%, rgba(20, 184, 166, 0.12), transparent 28%),
        linear-gradient(135deg, #EFF6FF, #FFFFFF);
      box-shadow: var(--shadow-hover);
    }

    .cta-panel h2 {
      font-size: clamp(28px, 4vw, 40px);
      line-height: 1.22;
      letter-spacing: -0.04em;
    }

    .cta-panel p {
      margin-top: 14px;
      max-width: 660px;
      color: var(--muted);
    }

    .contact-form {
      padding: 24px;
      border-radius: 24px;
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }

    .form-field {
      display: grid;
      gap: 7px;
    }

    .form-field.full {
      grid-column: 1 / -1;
    }

    .form-field label {
      color: var(--text);
      font-size: 13px;
      font-weight: 800;
    }

    .privacy {
      margin-top: 12px;
      color: var(--light-text);
      font-size: 12px;
      line-height: 1.6;
    }

    .site-footer {
      padding: 62px 0 28px;
      background: var(--footer);
      color: #E2E8F0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: minmax(260px, 1.2fr) repeat(3, minmax(0, 0.68fr));
      gap: 34px;
      padding-bottom: 34px;
      border-bottom: 1px solid rgba(226, 232, 240, 0.12);
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 16px;
      line-height: 1.4;
    }

    .footer-about {
      margin-top: 16px;
      max-width: 460px;
      color: rgba(226, 232, 240, 0.72);
      font-size: 14px;
      line-height: 1.8;
    }

    .footer-col h3 {
      font-size: 15px;
      color: #fff;
      margin-bottom: 14px;
    }

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

    .footer-links a,
    .footer-links span {
      color: rgba(226, 232, 240, 0.72);
      font-size: 14px;
      transition: color var(--ease);
    }

    .footer-links a:hover {
      color: #fff;
    }

    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      flex-wrap: wrap;
      padding-top: 22px;
      color: rgba(226, 232, 240, 0.56);
      font-size: 13px;
    }

    @media (max-width: 1024px) {
      .container {
        width: min(100% - 32px, var(--container));
      }

      .brand-text {
        max-width: 210px;
      }

      .hero-shell,
      .intro-grid,
      .component-section,
      .faq-wrap,
      .cta-panel {
        grid-template-columns: 1fr;
      }

      .visual-board {
        min-height: 380px;
      }

      .section-head {
        grid-template-columns: 1fr;
        gap: 16px;
      }

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

      .strategy-card:nth-child(n) {
        margin-top: 0;
      }

      .process-strip {
        grid-template-columns: repeat(3, minmax(0, 1fr));
      }

      .sticky-summary {
        position: static;
      }

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

    @media (max-width: 820px) {
      .nav-links {
        display: none;
      }

      .menu-btn {
        display: inline-flex;
      }

      .mobile-panel.show {
        display: block;
      }

      .nav-tools .btn {
        display: none;
      }

      .hero {
        padding-top: 36px;
      }

      .hero-shell {
        padding: 24px;
        border-radius: 26px;
      }

      .hero-notes {
        grid-template-columns: 1fr;
      }

      .component-grid,
      .scenario-layout {
        grid-template-columns: 1fr;
      }

      .scenario-card {
        grid-template-columns: 96px minmax(0, 1fr);
      }

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

    @media (max-width: 560px) {
      .container {
        width: min(100% - 24px, var(--container));
      }

      .brand-mark {
        width: 34px;
        height: 34px;
        border-radius: 12px;
      }

      .brand-text {
        max-width: 158px;
        font-size: 13px;
      }

      .search-btn {
        display: none;
      }

      .section {
        padding: 64px 0;
      }

      .section-tight {
        padding: 52px 0;
      }

      .hero-shell,
      .cta-panel {
        padding: 20px;
        border-radius: 24px;
      }

      .hero h1 {
        font-size: 32px;
      }

      .hero-actions {
        flex-direction: column;
      }

      .btn {
        width: 100%;
      }

      .visual-board {
        min-height: 320px;
      }

      .palette-card {
        left: 16px;
        right: 16px;
        top: 16px;
        padding: 18px;
      }

      .palette-row {
        grid-template-columns: repeat(2, 1fr);
      }

      .swatch {
        height: 50px;
      }

      .component-card {
        left: 18px;
        width: calc(100% - 36px);
        bottom: 22px;
      }

      .floating-chip {
        display: none;
      }

      .intro-main,
      .sticky-summary,
      .faq-intro,
      .contact-form {
        padding: 22px;
      }

      .strategy-grid,
      .process-strip,
      .form-grid {
        grid-template-columns: 1fr;
      }

      .scenario-card {
        grid-template-columns: 1fr;
      }

      .scenario-cover {
        min-height: 120px;
      }

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

      .copyright {
        display: grid;
      }
    }

/* roulang page: category2 */
:root{
      --primary:#2563EB;
      --primary-dark:#1D4ED8;
      --primary-soft:#EFF6FF;
      --accent:#14B8A6;
      --accent-soft:#E6FFFB;
      --amber:#F59E0B;
      --bg:#F6F9FE;
      --bg-soft:#F8FAFC;
      --surface:#FFFFFF;
      --surface-blue:#F1F7FF;
      --text:#172033;
      --muted:#475569;
      --weak:#64748B;
      --border:#DCE7F5;
      --border-soft:rgba(148,163,184,.22);
      --footer:#0F172A;
      --radius-sm:12px;
      --radius:18px;
      --radius-lg:26px;
      --shadow:0 12px 32px rgba(37,99,235,.08);
      --shadow-hover:0 18px 44px rgba(37,99,235,.14);
      --container:1180px;
      --nav-height:64px;
      --transition:.22s ease;
      --font:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",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 12% 8%, rgba(96,165,250,.14), transparent 30%),
        linear-gradient(180deg,#fff 0%,var(--bg) 42%,#fff 100%);
      line-height:1.75;
      font-size:16px;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img,svg{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(37,99,235,.16)}
    .container{
      width:min(var(--container),calc(100% - 40px));
      margin:0 auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,255,255,.92);
      backdrop-filter:saturate(180%) blur(14px);
      border-bottom:1px solid rgba(220,231,245,.8);
    }
    .nav{
      min-height:var(--nav-height);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:10px;
      min-width:0;
      font-weight:800;
      letter-spacing:-.02em;
      color:var(--text);
    }
    .brand-mark{
      width:36px;
      height:36px;
      border-radius:13px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      flex:0 0 auto;
      color:#fff;
      font-weight:800;
      background:
        linear-gradient(135deg,var(--primary),#60A5FA 56%,var(--accent));
      box-shadow:0 10px 24px rgba(37,99,235,.18);
    }
    .brand-text{
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      max-width:330px;
    }
    .nav-links{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:6px;
      padding:5px;
      border:1px solid rgba(220,231,245,.75);
      border-radius:999px;
      background:rgba(248,250,252,.9);
    }
    .nav-links a,.mobile-links a{
      color:#334155;
      font-weight:600;
      font-size:14px;
      padding:8px 13px;
      border-radius:999px;
      transition:background var(--transition),color var(--transition),transform var(--transition);
    }
    .nav-links a:hover,.mobile-links a:hover{
      color:var(--primary);
      background:var(--primary-soft);
    }
    .nav-links a.active,.mobile-links a.active{
      color:var(--primary);
      background:#fff;
      box-shadow:0 8px 18px rgba(37,99,235,.08);
    }
    .nav-tools{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .search-btn,.menu-btn{
      width:42px;
      height:42px;
      border-radius:999px;
      border:1px solid var(--border);
      background:#fff;
      color:#334155;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      transition:all var(--transition);
    }
    .search-btn:hover,.menu-btn:hover{
      color:var(--primary);
      border-color:#BFDBFE;
      background:var(--primary-soft);
      transform:translateY(-1px);
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      border-radius:999px;
      padding:12px 22px;
      border:1px solid transparent;
      font-weight:700;
      font-size:15px;
      line-height:1.2;
      transition:background var(--transition),color var(--transition),border-color var(--transition),box-shadow var(--transition),transform var(--transition);
    }
    .btn-primary{
      background:var(--primary);
      color:#fff;
      box-shadow:0 12px 24px rgba(37,99,235,.18);
    }
    .btn-primary:hover{
      background:var(--primary-dark);
      transform:translateY(-1px);
      box-shadow:0 16px 32px rgba(37,99,235,.24);
    }
    .btn-secondary{
      background:#fff;
      color:var(--primary);
      border-color:#BFDBFE;
    }
    .btn-secondary:hover{
      background:var(--primary-soft);
      transform:translateY(-1px);
    }
    .btn-text{
      padding:0;
      color:var(--primary);
      font-weight:700;
      display:inline-flex;
      align-items:center;
      gap:7px;
    }
    .btn-text span{transition:transform var(--transition)}
    .btn-text:hover span{transform:translateX(3px)}
    .btn:focus-visible,.search-btn:focus-visible,.menu-btn:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
      outline:0;
      box-shadow:0 0 0 4px rgba(37,99,235,.22);
    }
    .menu-btn{display:none}
    .menu-lines,.menu-lines::before,.menu-lines::after{
      width:18px;
      height:2px;
      border-radius:99px;
      background:currentColor;
      display:block;
      position:relative;
      transition:var(--transition);
    }
    .menu-lines::before,.menu-lines::after{
      content:"";
      position:absolute;
      left:0;
    }
    .menu-lines::before{top:-6px}
    .menu-lines::after{top:6px}
    .mobile-panel{
      display:none;
      border-top:1px solid var(--border);
      padding:10px 0 16px;
    }
    .mobile-links{
      display:grid;
      gap:8px;
    }
    main{display:block}
    .section{
      padding:92px 0;
    }
    .section.tight{padding-top:56px}
    .eyebrow,.badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      border-radius:999px;
      padding:7px 12px;
      font-size:13px;
      font-weight:700;
      color:var(--primary);
      background:var(--primary-soft);
      border:1px solid #DBEAFE;
    }
    .badge.teal{
      color:#0F766E;
      background:var(--accent-soft);
      border-color:#BFF7EE;
    }
    .badge.amber{
      color:#92400E;
      background:#FFFBEB;
      border-color:#FDE68A;
    }
    .section-head{
      max-width:760px;
      margin-bottom:34px;
    }
    .section-head.center{
      margin-left:auto;
      margin-right:auto;
      text-align:center;
    }
    h1,h2,h3,p{margin-top:0}
    h1{
      margin:18px 0 18px;
      font-size:clamp(32px,5vw,54px);
      line-height:1.15;
      letter-spacing:-.045em;
      font-weight:800;
    }
    h2{
      margin:14px 0 14px;
      font-size:clamp(28px,3.4vw,38px);
      line-height:1.25;
      letter-spacing:-.035em;
      font-weight:800;
    }
    h3{
      margin:0 0 10px;
      font-size:21px;
      line-height:1.35;
      font-weight:750;
      letter-spacing:-.02em;
    }
    p{
      color:var(--muted);
      line-height:1.82;
    }
    .lead{
      max-width:720px;
      font-size:18px;
      color:#42526A;
    }
    .hero{
      padding:58px 0 82px;
      position:relative;
    }
    .hero::before{
      content:"";
      position:absolute;
      inset:0;
      pointer-events:none;
      background-image:
        linear-gradient(rgba(37,99,235,.055) 1px,transparent 1px),
        linear-gradient(90deg,rgba(37,99,235,.055) 1px,transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 82%);
    }
    .hero-grid{
      position:relative;
      display:grid;
      grid-template-columns:minmax(0,1.02fr) minmax(360px,.98fr);
      align-items:center;
      gap:48px;
    }
    .breadcrumb{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:8px;
      color:var(--weak);
      font-size:14px;
      margin-bottom:18px;
    }
    .breadcrumb a{color:var(--primary);font-weight:700}
    .hero-actions{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:12px;
      margin-top:28px;
    }
    .hero-notes{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
      margin-top:32px;
      max-width:680px;
    }
    .note-card{
      background:rgba(255,255,255,.82);
      border:1px solid var(--border-soft);
      border-radius:var(--radius);
      padding:16px;
      box-shadow:0 8px 24px rgba(37,99,235,.06);
    }
    .note-card strong{
      display:block;
      color:var(--text);
      font-size:18px;
      line-height:1.3;
      margin-bottom:4px;
    }
    .note-card span{
      color:var(--weak);
      font-size:13px;
      line-height:1.5;
    }
    .toc-board{
      position:relative;
      border-radius:30px;
      padding:24px;
      background:#fff;
      border:1px solid rgba(191,219,254,.82);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .toc-board::before{
      content:"";
      position:absolute;
      width:220px;
      height:220px;
      right:-70px;
      top:-82px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(96,165,250,.26),transparent 68%);
    }
    .toc-top{
      position:relative;
      display:flex;
      justify-content:space-between;
      gap:16px;
      align-items:flex-start;
      margin-bottom:22px;
    }
    .toc-title small{
      display:block;
      color:var(--weak);
      font-weight:700;
      font-size:13px;
      margin-bottom:3px;
    }
    .toc-title strong{
      font-size:23px;
      line-height:1.28;
      letter-spacing:-.03em;
    }
    .toc-index{
      width:58px;
      height:58px;
      border-radius:20px;
      display:flex;
      align-items:center;
      justify-content:center;
      color:#fff;
      font-weight:800;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 12px 28px rgba(37,99,235,.18);
    }
    .toc-list{
      position:relative;
      display:grid;
      gap:12px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .toc-list li{
      display:grid;
      grid-template-columns:34px 1fr auto;
      align-items:center;
      gap:12px;
      padding:13px;
      border-radius:17px;
      background:var(--bg-soft);
      border:1px solid rgba(220,231,245,.9);
    }
    .toc-list i{
      width:34px;
      height:34px;
      border-radius:12px;
      display:flex;
      align-items:center;
      justify-content:center;
      font-style:normal;
      font-weight:800;
      color:var(--primary);
      background:#fff;
    }
    .toc-list strong{font-size:15px}
    .toc-list span{color:var(--weak);font-size:13px}
    .toc-list em{
      font-style:normal;
      color:var(--accent);
      font-weight:800;
      font-size:12px;
    }
    .card{
      background:var(--surface);
      border:1px solid var(--border-soft);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      transition:border-color var(--transition),box-shadow var(--transition),transform var(--transition);
    }
    .card:hover{
      border-color:#BFDBFE;
      box-shadow:var(--shadow-hover);
      transform:translateY(-2px);
    }
    .principle-grid{
      display:grid;
      grid-template-columns:1.08fr .92fr;
      gap:22px;
      align-items:stretch;
    }
    .principle-main{
      padding:34px;
      background:
        linear-gradient(135deg,#fff 0%,#F1F7FF 100%);
    }
    .principle-main p{max-width:660px}
    .path-steps{
      display:grid;
      gap:14px;
      margin-top:24px;
    }
    .path-step{
      display:grid;
      grid-template-columns:46px 1fr;
      gap:14px;
      align-items:start;
      padding:17px;
      border-radius:20px;
      border:1px solid rgba(220,231,245,.92);
      background:rgba(255,255,255,.82);
    }
    .step-num{
      width:46px;
      height:46px;
      border-radius:16px;
      background:var(--primary-soft);
      color:var(--primary);
      display:flex;
      align-items:center;
      justify-content:center;
      font-weight:800;
    }
    .path-step p{margin:0;font-size:14px;color:var(--weak);line-height:1.7}
    .density-card{
      padding:30px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      min-height:100%;
    }
    .density-meter{
      display:grid;
      gap:16px;
      margin-top:20px;
    }
    .meter-row{
      display:grid;
      gap:8px;
    }
    .meter-label{
      display:flex;
      justify-content:space-between;
      color:var(--weak);
      font-size:14px;
      font-weight:700;
    }
    .meter-track{
      height:10px;
      border-radius:999px;
      background:#EAF2FF;
      overflow:hidden;
    }
    .meter-fill{
      height:100%;
      border-radius:999px;
      background:linear-gradient(90deg,var(--primary),var(--accent));
    }
    .display-grid{
      display:grid;
      grid-template-columns:repeat(12,1fr);
      gap:18px;
    }
    .display-card{
      padding:26px;
      min-height:210px;
    }
    .display-card:nth-child(1){grid-column:span 5}
    .display-card:nth-child(2){grid-column:span 7}
    .display-card:nth-child(3){grid-column:span 4}
    .display-card:nth-child(4){grid-column:span 4}
    .display-card:nth-child(5){grid-column:span 4}
    .icon-box{
      width:48px;
      height:48px;
      border-radius:17px;
      display:flex;
      align-items:center;
      justify-content:center;
      margin-bottom:18px;
      background:var(--primary-soft);
      color:var(--primary);
    }
    .mini-list{
      margin:16px 0 0;
      padding:0;
      list-style:none;
      display:grid;
      gap:10px;
    }
    .mini-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:var(--muted);
      font-size:15px;
    }
    .mini-list li::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--accent);
      margin-top:10px;
      flex:0 0 auto;
    }
    .magazine-flow{
      display:grid;
      grid-template-columns:.88fr 1.12fr;
      gap:24px;
      align-items:start;
    }
    .flow-panel{
      padding:30px;
      position:sticky;
      top:88px;
    }
    .flow-panel p{margin-bottom:0}
    .flow-stream{
      display:grid;
      gap:16px;
    }
    .stream-item{
      display:grid;
      grid-template-columns:88px 1fr;
      gap:18px;
      padding:22px;
      border-radius:24px;
      background:#fff;
      border:1px solid var(--border-soft);
      box-shadow:0 10px 28px rgba(37,99,235,.06);
    }
    .stream-time{
      display:flex;
      flex-direction:column;
      align-items:center;
      justify-content:center;
      border-radius:18px;
      min-height:82px;
      color:var(--primary);
      background:var(--primary-soft);
      font-weight:800;
      line-height:1.25;
    }
    .stream-time small{
      color:var(--weak);
      font-size:12px;
      font-weight:700;
    }
    .stream-item p{margin:0}
    .nav-system{
      padding:34px;
      background:
        linear-gradient(180deg,#fff, #F7FBFF);
    }
    .tag-cloud{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:20px;
    }
    .tag-cloud span{
      display:inline-flex;
      align-items:center;
      border-radius:999px;
      padding:9px 13px;
      color:#334155;
      font-size:14px;
      font-weight:700;
      border:1px solid var(--border);
      background:#fff;
    }
    .split-block{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:22px;
      align-items:stretch;
    }
    .quote-card{
      padding:34px;
      background:var(--footer);
      color:#fff;
      border-radius:var(--radius-lg);
      box-shadow:0 18px 44px rgba(15,23,42,.16);
    }
    .quote-card p{color:#CBD5E1;font-size:18px;margin-bottom:22px}
    .quote-card strong{font-size:21px}
    .check-panel{
      padding:30px;
    }
    .check-list{
      margin:0;
      padding:0;
      list-style:none;
      display:grid;
      gap:14px;
    }
    .check-list li{
      display:grid;
      grid-template-columns:28px 1fr;
      gap:12px;
      align-items:start;
      color:var(--muted);
    }
    .check-list li::before{
      content:"✓";
      width:28px;
      height:28px;
      border-radius:999px;
      background:var(--accent-soft);
      color:#0F766E;
      display:flex;
      align-items:center;
      justify-content:center;
      font-weight:900;
      margin-top:2px;
    }
    .faq-wrap{
      display:grid;
      grid-template-columns:.86fr 1.14fr;
      gap:26px;
      align-items:start;
    }
    .faq-intro{
      padding:30px;
      background:linear-gradient(135deg,#fff,#F1F7FF);
    }
    .faq-list{
      display:grid;
      gap:12px;
    }
    .faq-item{
      border:1px solid var(--border-soft);
      border-radius:20px;
      background:#fff;
      box-shadow:0 8px 20px rgba(37,99,235,.05);
      overflow:hidden;
    }
    .faq-question{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      padding:20px 22px;
      border:0;
      background:#fff;
      color:var(--text);
      text-align:left;
      font-weight:800;
    }
    .faq-question span:last-child{
      width:26px;
      height:26px;
      border-radius:50%;
      background:var(--primary-soft);
      color:var(--primary);
      display:flex;
      align-items:center;
      justify-content:center;
      flex:0 0 auto;
      transition:transform var(--transition);
    }
    .faq-answer{
      display:none;
      padding:0 22px 20px;
    }
    .faq-answer p{margin:0}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta-section{
      padding:88px 0 100px;
    }
    .cta-box{
      display:grid;
      grid-template-columns:1fr 430px;
      gap:34px;
      align-items:center;
      border-radius:34px;
      padding:42px;
      background:
        radial-gradient(circle at 88% 12%,rgba(20,184,166,.16),transparent 32%),
        linear-gradient(135deg,#EFF6FF 0%,#fff 100%);
      border:1px solid rgba(191,219,254,.82);
      box-shadow:var(--shadow);
    }
    .cta-points{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
      margin-top:26px;
    }
    .cta-points span{
      padding:13px 14px;
      border-radius:16px;
      background:#fff;
      color:var(--muted);
      font-size:14px;
      font-weight:700;
      border:1px solid var(--border-soft);
    }
    .form-card{
      padding:24px;
      border-radius:26px;
      background:#fff;
      border:1px solid var(--border);
      box-shadow:0 14px 30px rgba(37,99,235,.08);
    }
    .form-grid{
      display:grid;
      gap:13px;
    }
    .field label{
      display:block;
      margin-bottom:7px;
      color:#334155;
      font-size:14px;
      font-weight:700;
    }
    .field input,.field select,.field textarea{
      width:100%;
      border:1px solid var(--border);
      border-radius:14px;
      min-height:46px;
      padding:11px 13px;
      color:var(--text);
      background:#fff;
      transition:border-color var(--transition),box-shadow var(--transition),background var(--transition);
    }
    .field textarea{
      min-height:104px;
      resize:vertical;
    }
    .field input::placeholder,.field textarea::placeholder{color:#94A3B8}
    .field input:focus,.field select:focus,.field textarea:focus{
      outline:0;
      border-color:#93C5FD;
      background:#FBFDFF;
      box-shadow:0 0 0 4px rgba(37,99,235,.13);
    }
    .privacy{
      color:var(--weak);
      font-size:13px;
      margin:10px 0 0;
      line-height:1.6;
    }
    .site-footer{
      background:var(--footer);
      color:#fff;
      padding:58px 0 26px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.45fr .8fr .8fr 1.05fr;
      gap:34px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(226,232,240,.14);
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:10px;
      margin-bottom:14px;
    }
    .footer-brand strong{
      font-size:18px;
      line-height:1.35;
    }
    .footer-about{
      color:#CBD5E1;
      margin:0;
      max-width:420px;
      font-size:14px;
      line-height:1.85;
    }
    .footer-col h3{
      margin-bottom:14px;
      color:#fff;
      font-size:16px;
    }
    .footer-links{
      margin:0;
      padding:0;
      list-style:none;
      display:grid;
      gap:9px;
    }
    .footer-links a,.footer-links span{
      color:#CBD5E1;
      font-size:14px;
      transition:color var(--transition);
    }
    .footer-links a:hover{color:#fff}
    .copyright{
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      padding-top:22px;
      color:#94A3B8;
      font-size:13px;
    }
    @media (max-width:1024px){
      .brand-text{max-width:230px}
      .hero-grid,.principle-grid,.magazine-flow,.faq-wrap,.cta-box{
        grid-template-columns:1fr;
      }
      .toc-board{max-width:720px}
      .hero-notes,.cta-points{grid-template-columns:repeat(3,1fr)}
      .display-card:nth-child(n){grid-column:span 6}
      .flow-panel{position:relative;top:auto}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:820px){
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .nav .btn-primary{display:none}
      .mobile-panel.show{display:block}
      .brand-text{max-width:58vw}
      .section{padding:68px 0}
      .hero{padding:42px 0 66px}
      .hero-notes,.cta-points,.split-block{grid-template-columns:1fr}
      .display-card:nth-child(n){grid-column:span 12}
      .stream-item{grid-template-columns:1fr}
      .stream-time{
        width:96px;
        min-height:58px;
        align-items:flex-start;
        padding-left:16px;
      }
      .cta-box{padding:28px}
    }
    @media (max-width:560px){
      .container{width:min(100% - 28px,var(--container))}
      .brand-mark{width:34px;height:34px;border-radius:12px}
      .brand-text{font-size:14px}
      .search-btn,.menu-btn{width:40px;height:40px}
      h1{font-size:32px}
      h2{font-size:27px}
      .lead{font-size:16px}
      .hero-actions{align-items:stretch}
      .hero-actions .btn{width:100%}
      .toc-board,.principle-main,.density-card,.nav-system,.quote-card,.check-panel,.faq-intro,.form-card{
        padding:22px;
      }
      .toc-list li{grid-template-columns:32px 1fr}
      .toc-list em{display:none}
      .footer-grid{grid-template-columns:1fr}
      .copyright{display:grid}
    }

/* roulang page: category3 */
:root{
      --primary:#2563EB;
      --primary-dark:#1D4ED8;
      --primary-soft:#EFF6FF;
      --cyan:#14B8A6;
      --sky:#60A5FA;
      --amber:#F59E0B;
      --text:#172033;
      --muted:#475569;
      --subtle:#64748B;
      --light:#F6F9FE;
      --light-2:#F8FAFC;
      --white:#FFFFFF;
      --border:#DCE7F5;
      --border-soft:rgba(148,163,184,.22);
      --footer:#0F172A;
      --radius-sm:12px;
      --radius:18px;
      --radius-lg:26px;
      --shadow:0 12px 32px rgba(37,99,235,.08);
      --shadow-hover:0 18px 44px rgba(37,99,235,.14);
      --container:1180px;
      --section:96px;
      --ease:all .22s 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",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 4%, rgba(96,165,250,.18), transparent 28%),
        linear-gradient(180deg,#FFFFFF 0%,#F6F9FE 42%,#FFFFFF 100%);
      line-height:1.75;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none}
    img,svg{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(37,99,235,.14)}
    :focus-visible{
      outline:3px solid rgba(37,99,235,.28);
      outline-offset:3px;
    }

    .container{
      width:min(var(--container), calc(100% - 40px));
      margin-inline:auto;
    }
    .section{
      padding:var(--section) 0;
    }
    .section-tight{
      padding:72px 0;
    }
    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:flex-end;
      gap:28px;
      margin-bottom:34px;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--primary);
      background:var(--primary-soft);
      border:1px solid rgba(37,99,235,.12);
      border-radius:999px;
      padding:7px 12px;
      font-size:13px;
      font-weight:700;
      margin-bottom:14px;
    }
    .section-kicker::before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--cyan);
      box-shadow:0 0 0 4px rgba(20,184,166,.12);
    }
    h1,h2,h3,p{margin-top:0}
    h1{
      font-size:clamp(32px,5vw,54px);
      line-height:1.14;
      letter-spacing:-.03em;
      font-weight:800;
      margin-bottom:20px;
      color:var(--text);
    }
    h2{
      font-size:clamp(28px,3.5vw,38px);
      line-height:1.25;
      letter-spacing:-.02em;
      margin-bottom:14px;
    }
    h3{
      font-size:21px;
      line-height:1.35;
      margin-bottom:10px;
    }
    p{
      color:var(--muted);
      font-size:16.5px;
      margin-bottom:0;
    }
    .lead{
      font-size:18px;
      color:var(--muted);
      max-width:720px;
    }
    .muted{color:var(--subtle)}
    .text-link{
      display:inline-flex;
      align-items:center;
      gap:7px;
      color:var(--primary);
      font-weight:700;
      transition:var(--ease);
    }
    .text-link:hover{gap:11px;color:var(--primary-dark)}

    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,255,255,.92);
      backdrop-filter:saturate(160%) blur(14px);
      border-bottom:1px solid rgba(220,231,245,.86);
    }
    .nav{
      min-height:64px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:10px;
      min-width:0;
      font-weight:800;
      color:var(--text);
    }
    .brand-mark{
      width:34px;
      height:34px;
      border-radius:12px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      color:#fff;
      font-weight:800;
      background:
        linear-gradient(135deg,var(--primary),var(--sky) 55%,var(--cyan));
      box-shadow:0 10px 22px rgba(37,99,235,.22);
      flex:0 0 auto;
    }
    .brand-text{
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      max-width:270px;
      letter-spacing:-.01em;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:6px;
      padding:4px;
      background:rgba(246,249,254,.7);
      border:1px solid rgba(220,231,245,.8);
      border-radius:999px;
    }
    .nav-links a,
    .mobile-links a{
      color:#334155;
      font-size:14px;
      font-weight:650;
      padding:8px 13px;
      border-radius:999px;
      transition:var(--ease);
    }
    .nav-links a:hover,
    .mobile-links a:hover{
      color:var(--primary);
      background:#fff;
    }
    .nav-links a.active,
    .mobile-links a.active{
      color:var(--primary);
      background:#fff;
      box-shadow:0 6px 18px rgba(37,99,235,.09);
    }
    .nav-tools{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .search-btn,.menu-btn{
      width:42px;
      height:42px;
      border-radius:999px;
      border:1px solid var(--border);
      background:#fff;
      color:#334155;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      transition:var(--ease);
    }
    .search-btn:hover,.menu-btn:hover{
      color:var(--primary);
      border-color:rgba(37,99,235,.25);
      box-shadow:var(--shadow);
      transform:translateY(-1px);
    }
    .menu-btn{display:none}
    .menu-lines{
      width:18px;
      height:2px;
      border-radius:99px;
      background:currentColor;
      position:relative;
    }
    .menu-lines::before,
    .menu-lines::after{
      content:"";
      position:absolute;
      left:0;
      width:18px;
      height:2px;
      border-radius:99px;
      background:currentColor;
      transition:var(--ease);
    }
    .menu-lines::before{top:-6px}
    .menu-lines::after{top:6px}
    .mobile-panel{
      display:none;
      border-top:1px solid var(--border);
      padding:10px 0 16px;
    }
    .mobile-links{
      display:grid;
      gap:8px;
    }

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      border-radius:999px;
      padding:12px 22px;
      font-weight:750;
      font-size:15px;
      border:1px solid transparent;
      transition:var(--ease);
      line-height:1.2;
      white-space:nowrap;
    }
    .btn-primary{
      color:#fff;
      background:var(--primary);
      box-shadow:0 12px 26px rgba(37,99,235,.22);
    }
    .btn-primary:hover{
      background:var(--primary-dark);
      transform:translateY(-1px);
      box-shadow:0 16px 34px rgba(37,99,235,.28);
    }
    .btn-secondary{
      background:#fff;
      color:var(--primary);
      border-color:rgba(37,99,235,.18);
    }
    .btn-secondary:hover{
      background:var(--primary-soft);
      transform:translateY(-1px);
    }
    .btn-ghost{
      background:rgba(255,255,255,.72);
      color:var(--text);
      border-color:var(--border);
    }
    .btn-ghost:hover{
      color:var(--primary);
      border-color:rgba(37,99,235,.26);
      box-shadow:var(--shadow);
    }

    .hero{
      padding:76px 0 58px;
      position:relative;
      overflow:hidden;
    }
    .hero::after{
      content:"";
      position:absolute;
      inset:auto -12% 0 auto;
      width:520px;
      height:520px;
      background:radial-gradient(circle,rgba(20,184,166,.13),transparent 65%);
      pointer-events:none;
    }
    .breadcrumb{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      color:var(--subtle);
      font-size:14px;
      margin-bottom:22px;
    }
    .breadcrumb a{
      color:var(--primary);
      font-weight:650;
    }
    .hero-grid{
      display:grid;
      grid-template-columns:minmax(0,1.05fr) minmax(380px,.95fr);
      gap:42px;
      align-items:center;
      position:relative;
      z-index:1;
    }
    .hero-copy{
      max-width:680px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:28px;
    }
    .hero-points{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
      margin-top:30px;
      max-width:690px;
    }
    .mini-stat{
      background:#fff;
      border:1px solid var(--border-soft);
      border-radius:var(--radius);
      padding:16px;
      box-shadow:0 10px 26px rgba(37,99,235,.06);
    }
    .mini-stat strong{
      display:block;
      color:var(--text);
      font-size:19px;
      line-height:1.2;
      margin-bottom:4px;
    }
    .mini-stat span{
      color:var(--subtle);
      font-size:13px;
      line-height:1.45;
      display:block;
    }
    .summary-board{
      background:#fff;
      border:1px solid rgba(220,231,245,.95);
      border-radius:30px;
      padding:24px;
      box-shadow:var(--shadow-hover);
      position:relative;
      overflow:hidden;
    }
    .summary-board::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg,rgba(37,99,235,.05) 1px,transparent 1px),
        linear-gradient(0deg,rgba(37,99,235,.05) 1px,transparent 1px);
      background-size:28px 28px;
      mask-image:linear-gradient(180deg,#000,transparent 82%);
      pointer-events:none;
    }
    .board-top{
      display:flex;
      justify-content:space-between;
      gap:14px;
      align-items:flex-start;
      position:relative;
      z-index:1;
      margin-bottom:18px;
    }
    .board-title strong{
      display:block;
      font-size:18px;
      margin-bottom:2px;
    }
    .board-title span{
      color:var(--subtle);
      font-size:13px;
    }
    .growth-pill{
      color:#0F766E;
      background:#ECFDF5;
      border:1px solid rgba(20,184,166,.18);
      border-radius:999px;
      padding:6px 10px;
      font-size:12px;
      font-weight:800;
      white-space:nowrap;
    }
    .metric-panel{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:14px;
      position:relative;
      z-index:1;
    }
    .metric-card{
      border:1px solid var(--border-soft);
      background:rgba(255,255,255,.9);
      border-radius:20px;
      padding:18px;
    }
    .metric-card.large{
      grid-column:1 / -1;
      min-height:142px;
      background:linear-gradient(135deg,#F8FBFF,#EEF6FF);
      position:relative;
      overflow:hidden;
    }
    .metric-card.large::after{
      content:"";
      position:absolute;
      width:160px;
      height:160px;
      right:-48px;
      bottom:-70px;
      border-radius:50%;
      background:rgba(37,99,235,.12);
    }
    .metric-label{
      color:var(--subtle);
      font-size:13px;
      margin-bottom:8px;
    }
    .metric-number{
      font-size:34px;
      font-weight:850;
      color:var(--primary);
      line-height:1;
      letter-spacing:-.03em;
    }
    .metric-desc{
      margin-top:9px;
      color:var(--muted);
      font-size:14px;
      position:relative;
      z-index:1;
    }
    .progress-track{
      height:8px;
      border-radius:999px;
      background:#E5EDF8;
      overflow:hidden;
      margin-top:15px;
    }
    .progress-bar{
      height:100%;
      width:78%;
      border-radius:999px;
      background:linear-gradient(90deg,var(--primary),var(--cyan));
    }

    .card{
      background:#fff;
      border:1px solid var(--border-soft);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      transition:var(--ease);
    }
    .card:hover{
      transform:translateY(-2px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(37,99,235,.2);
    }
    .growth-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr .9fr;
      gap:18px;
      align-items:stretch;
    }
    .growth-card{
      padding:28px;
      min-height:260px;
      position:relative;
      overflow:hidden;
    }
    .growth-card.featured{
      background:linear-gradient(145deg,#FFFFFF,#F0F7FF);
    }
    .growth-card.featured::after{
      content:"";
      position:absolute;
      right:-60px;
      bottom:-70px;
      width:210px;
      height:210px;
      border-radius:50%;
      background:rgba(96,165,250,.15);
    }
    .icon-box{
      width:46px;
      height:46px;
      border-radius:16px;
      display:flex;
      align-items:center;
      justify-content:center;
      color:var(--primary);
      background:var(--primary-soft);
      margin-bottom:18px;
    }
    .tag-row{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-top:20px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      border-radius:999px;
      padding:6px 10px;
      font-size:12px;
      color:#315074;
      background:#F8FAFC;
      border:1px solid var(--border);
      font-weight:700;
    }

    .seo-panel{
      display:grid;
      grid-template-columns:.88fr 1.12fr;
      gap:22px;
      align-items:start;
    }
    .seo-note{
      padding:30px;
      background:linear-gradient(180deg,#FFFFFF,#F6F9FE);
    }
    .seo-preview{
      padding:28px;
    }
    .search-preview{
      border:1px solid var(--border);
      border-radius:22px;
      padding:22px;
      background:#fff;
      margin-top:18px;
    }
    .preview-url{
      color:#15803D;
      font-size:13px;
      margin-bottom:8px;
      word-break:break-all;
    }
    .preview-title{
      color:#1D4ED8;
      font-size:20px;
      line-height:1.35;
      margin-bottom:8px;
      font-weight:750;
    }
    .preview-desc{
      color:#475569;
      font-size:14px;
      line-height:1.7;
    }
    .seo-list{
      display:grid;
      gap:12px;
      margin-top:18px;
    }
    .check-item{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:14px;
      border:1px solid var(--border-soft);
      border-radius:16px;
      background:#fff;
    }
    .check{
      width:22px;
      height:22px;
      border-radius:50%;
      background:#ECFDF5;
      color:#0F766E;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      flex:0 0 auto;
      font-weight:900;
      font-size:13px;
    }
    .check-item strong{
      display:block;
      margin-bottom:2px;
      line-height:1.3;
    }
    .check-item span{
      color:var(--subtle);
      font-size:14px;
      line-height:1.55;
    }

    .conversion-wrap{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
    }
    .conversion-card{
      padding:24px;
      min-height:220px;
    }
    .conversion-card .num{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:34px;
      height:34px;
      border-radius:50%;
      color:#fff;
      background:var(--primary);
      font-weight:800;
      margin-bottom:18px;
      box-shadow:0 10px 18px rgba(37,99,235,.22);
    }
    .conversion-card:nth-child(2) .num{background:var(--cyan)}
    .conversion-card:nth-child(3) .num{background:var(--sky)}
    .conversion-card:nth-child(4) .num{background:var(--amber)}
    .component-strip{
      margin-top:20px;
      border:1px solid var(--border);
      border-radius:24px;
      background:#fff;
      padding:18px;
      display:grid;
      grid-template-columns:1fr auto;
      gap:18px;
      align-items:center;
      box-shadow:var(--shadow);
    }
    .strip-left{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
    }
    .contact-chip{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:10px 13px;
      border-radius:999px;
      background:#F8FAFC;
      border:1px solid var(--border);
      color:#334155;
      font-size:14px;
      font-weight:700;
    }
    .contact-chip i{
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--cyan);
      display:inline-block;
    }

    .process{
      position:relative;
    }
    .process-line{
      position:absolute;
      left:calc(50% - 1px);
      top:36px;
      bottom:36px;
      width:2px;
      background:linear-gradient(180deg,var(--primary),rgba(37,99,235,.08));
    }
    .step-list{
      display:grid;
      gap:18px;
      position:relative;
      z-index:1;
    }
    .step{
      display:grid;
      grid-template-columns:1fr 70px 1fr;
      align-items:center;
      gap:20px;
    }
    .step:nth-child(even) .step-card{grid-column:3}
    .step:nth-child(even) .step-dot{grid-column:2;grid-row:1}
    .step:nth-child(even)::before{
      content:"";
      grid-column:1;
      grid-row:1;
    }
    .step-card{
      padding:24px;
      background:#fff;
      border:1px solid var(--border-soft);
      border-radius:24px;
      box-shadow:var(--shadow);
    }
    .step-dot{
      width:54px;
      height:54px;
      margin:auto;
      border-radius:50%;
      background:#fff;
      border:7px solid #DBEAFE;
      color:var(--primary);
      display:flex;
      align-items:center;
      justify-content:center;
      font-weight:850;
      box-shadow:0 10px 24px rgba(37,99,235,.12);
    }

    .trust-band{
      background:#0F172A;
      color:#fff;
      border-radius:32px;
      padding:34px;
      display:grid;
      grid-template-columns:1fr 1fr 1fr;
      gap:18px;
      overflow:hidden;
      position:relative;
    }
    .trust-band::before{
      content:"";
      position:absolute;
      inset:-30% auto auto -10%;
      width:360px;
      height:360px;
      border-radius:50%;
      background:rgba(96,165,250,.18);
    }
    .trust-item{
      position:relative;
      z-index:1;
      padding:18px;
      border:1px solid rgba(255,255,255,.12);
      border-radius:22px;
      background:rgba(255,255,255,.04);
    }
    .trust-item strong{
      display:block;
      font-size:24px;
      line-height:1.1;
      margin-bottom:8px;
      color:#fff;
    }
    .trust-item span{
      color:#CBD5E1;
      font-size:14px;
      display:block;
      line-height:1.6;
    }

    .faq-grid{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:26px;
      align-items:start;
    }
    .faq-list{
      display:grid;
      gap:12px;
    }
    .faq-item{
      background:#fff;
      border:1px solid var(--border-soft);
      border-radius:20px;
      overflow:hidden;
      box-shadow:0 8px 24px rgba(37,99,235,.05);
    }
    .faq-question{
      width:100%;
      border:0;
      background:#fff;
      padding:18px 20px;
      text-align:left;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      color:var(--text);
      font-weight:800;
    }
    .faq-question span:last-child{
      color:var(--primary);
      font-size:20px;
      transition:var(--ease);
    }
    .faq-answer{
      display:none;
      padding:0 20px 20px;
      color:var(--muted);
      font-size:15.5px;
    }
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}

    .contact-section{
      padding:0 0 98px;
    }
    .contact-shell{
      border-radius:34px;
      background:
        radial-gradient(circle at 86% 12%, rgba(20,184,166,.18), transparent 28%),
        linear-gradient(135deg,#EFF6FF,#FFFFFF 58%,#F8FAFC);
      border:1px solid rgba(220,231,245,.95);
      padding:36px;
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:28px;
      box-shadow:var(--shadow);
    }
    .contact-copy{
      padding:12px 0;
    }
    .contact-copy h2{max-width:560px}
    .contact-bullets{
      display:grid;
      gap:12px;
      margin-top:24px;
      padding:0;
      list-style:none;
    }
    .contact-bullets li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:var(--muted);
    }
    .contact-bullets li::before{
      content:"";
      width:9px;
      height:9px;
      border-radius:50%;
      background:var(--primary);
      margin-top:10px;
      flex:0 0 auto;
    }
    .form-card{
      background:#fff;
      border:1px solid var(--border-soft);
      border-radius:26px;
      padding:24px;
      box-shadow:var(--shadow-hover);
    }
    .form-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:14px;
    }
    .field{
      display:grid;
      gap:7px;
    }
    .field.full{grid-column:1 / -1}
    label{
      font-size:13px;
      color:#334155;
      font-weight:750;
    }
    input,select,textarea{
      width:100%;
      border:1px solid var(--border);
      background:#fff;
      color:var(--text);
      border-radius:14px;
      min-height:46px;
      padding:11px 13px;
      transition:var(--ease);
    }
    textarea{
      min-height:112px;
      resize:vertical;
    }
    input::placeholder,textarea::placeholder{color:#94A3B8}
    input:focus,select:focus,textarea:focus{
      outline:none;
      border-color:rgba(37,99,235,.55);
      box-shadow:0 0 0 4px rgba(37,99,235,.12);
    }
    .privacy{
      font-size:13px;
      color:var(--subtle);
      margin-top:12px;
    }

    .site-footer{
      background:var(--footer);
      color:#E2E8F0;
      padding:58px 0 26px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.35fr .75fr .75fr 1fr;
      gap:34px;
      margin-bottom:34px;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:10px;
      margin-bottom:14px;
    }
    .footer-brand strong{
      color:#fff;
      font-size:18px;
      line-height:1.35;
    }
    .footer-about{
      color:#CBD5E1;
      max-width:430px;
      font-size:15px;
    }
    .footer-col h3{
      color:#fff;
      font-size:16px;
      margin-bottom:14px;
    }
    .footer-links{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:10px;
    }
    .footer-links a,
    .footer-links span{
      color:#CBD5E1;
      font-size:14px;
      transition:var(--ease);
    }
    .footer-links a:hover{
      color:#fff;
      padding-left:3px;
    }
    .copyright{
      border-top:1px solid rgba(255,255,255,.1);
      padding-top:20px;
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      color:#94A3B8;
      font-size:13px;
    }

    @media (max-width:1024px){
      :root{--section:78px}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .mobile-panel.show{display:block}
      .hero-grid,
      .seo-panel,
      .faq-grid,
      .contact-shell{
        grid-template-columns:1fr;
      }
      .summary-board{max-width:680px}
      .growth-grid{grid-template-columns:1fr 1fr}
      .growth-card.featured{grid-column:1 / -1}
      .conversion-wrap{grid-template-columns:1fr 1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      .container{width:min(100% - 28px, var(--container))}
      .site-header .btn-primary{display:none}
      .brand-text{max-width:190px}
      .hero{padding:48px 0 42px}
      .hero-points,
      .metric-panel,
      .growth-grid,
      .conversion-wrap,
      .trust-band,
      .form-grid{
        grid-template-columns:1fr;
      }
      .metric-card.large{grid-column:auto}
      .section-head{
        display:block;
      }
      .component-strip{
        grid-template-columns:1fr;
      }
      .process-line{display:none}
      .step{
        grid-template-columns:54px 1fr;
        gap:14px;
        align-items:start;
      }
      .step:nth-child(even)::before{display:none}
      .step-card,
      .step:nth-child(even) .step-card{
        grid-column:2;
      }
      .step-dot,
      .step:nth-child(even) .step-dot{
        grid-column:1;
        grid-row:1;
        width:48px;
        height:48px;
      }
      .contact-shell{padding:24px}
      .footer-grid{grid-template-columns:1fr}
      .copyright{display:grid}
    }
    @media (max-width:520px){
      h1{font-size:31px}
      h2{font-size:27px}
      .hero-actions .btn,
      .contact-shell .btn{
        width:100%;
      }
      .summary-board,
      .form-card,
      .trust-band{
        border-radius:24px;
      }
      .brand-text{max-width:150px}
      .search-btn{display:none}
    }