/* roulang page: index */
:root{
      --graphite:#15171c;
      --graphite-2:#25272b;
      --teal:#18bfa6;
      --teal-dark:#0f9f8b;
      --amber:#f4a742;
      --amber-soft:#fff3dc;
      --mist:#f6f7f5;
      --sand:#eceae4;
      --white:#ffffff;
      --text:#25272b;
      --muted:#666b73;
      --weak:#9298a0;
      --line:#d8dad6;
      --line-soft:rgba(21,23,28,.09);
      --shadow:0 16px 42px rgba(21,23,28,.09);
      --shadow-soft:0 10px 28px rgba(21,23,28,.06);
      --radius-sm:12px;
      --radius:18px;
      --radius-lg:26px;
      --container:1200px;
      --ease:all .22s ease-out;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      color:var(--text);
      background:var(--mist);
      line-height:1.75;
      font-size:16px;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    img{display:block;max-width:100%;height:auto}
    button,input,textarea{font:inherit}
    button{border:0;cursor:pointer;background:none}
    :focus-visible{outline:3px solid rgba(24,191,166,.35);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 80px));margin:0 auto}
    .section{padding:86px 0}
    .section-sm{padding:68px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--teal-dark);
      background:rgba(24,191,166,.1);
      border:1px solid rgba(24,191,166,.18);
      border-radius:999px;
      padding:7px 13px;
      font-size:13px;
      font-weight:700;
      letter-spacing:.02em;
    }
    .eyebrow:before{
      content:"";
      width:8px;height:8px;border-radius:50%;
      background:var(--teal);
      box-shadow:0 0 0 5px rgba(24,191,166,.12);
    }
    h1,h2,h3{line-height:1.2;color:var(--graphite)}
    h1{font-size:clamp(32px,5vw,52px);font-weight:800;letter-spacing:-.04em}
    h2{font-size:clamp(25px,3.2vw,36px);font-weight:800;letter-spacing:-.03em}
    h3{font-size:20px;font-weight:750}
    p{color:var(--muted)}
    .lead{font-size:18px;line-height:1.85;color:#555b63}
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:48px;
      padding:13px 22px;
      border-radius:999px;
      font-weight:750;
      border:1px solid transparent;
      transition:var(--ease);
      white-space:nowrap;
    }
    .btn-primary{
      color:#fff;
      background:var(--teal);
      box-shadow:0 12px 26px rgba(24,191,166,.26);
    }
    .btn-primary:hover{background:var(--teal-dark);transform:translateY(-2px);box-shadow:0 18px 34px rgba(24,191,166,.28)}
    .btn-secondary{
      color:var(--graphite);
      background:rgba(255,255,255,.78);
      border-color:rgba(21,23,28,.18);
    }
    .btn-secondary:hover{border-color:rgba(24,191,166,.65);color:var(--teal-dark);transform:translateY(-2px)}
    .btn-ghost{
      color:var(--graphite);
      background:var(--amber-soft);
      border-color:rgba(244,167,66,.3);
    }
    .btn-ghost:hover{border-color:var(--amber);transform:translateY(-2px)}
    .topbar{
      height:38px;
      background:var(--graphite);
      color:rgba(255,255,255,.78);
      font-size:13px;
      display:flex;
      align-items:center;
    }
    .topbar .container{
      display:flex;
      justify-content:space-between;
      gap:20px;
      align-items:center;
    }
    .topbar a{color:#fff;border-bottom:1px solid rgba(24,191,166,.6)}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(246,247,245,.88);
      backdrop-filter:blur(14px);
      border-bottom:1px solid rgba(21,23,28,.08);
    }
    .nav-wrap{
      height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:28px;
    }
    .logo{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
      font-weight:850;
      color:var(--graphite);
      letter-spacing:-.02em;
    }
    .logo-mark{
      width:42px;height:42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      color:#fff;
      background:
        linear-gradient(135deg,rgba(24,191,166,.98),rgba(21,23,28,.92));
      box-shadow:0 12px 24px rgba(21,23,28,.14);
      position:relative;
      overflow:hidden;
    }
    .logo-mark:after{
      content:"";
      width:18px;height:18px;
      border:2px solid rgba(255,255,255,.8);
      border-left:0;border-bottom:0;
      transform:rotate(45deg);
      position:absolute;
      right:12px;
    }
    .logo-text{display:flex;flex-direction:column;line-height:1.18}
    .logo-text strong{font-size:17px}
    .logo-text span{font-size:12px;color:var(--muted);font-weight:650}
    .nav-links{
      display:flex;
      align-items:center;
      gap:8px;
      margin-left:auto;
    }
    .nav-links a{
      padding:10px 14px;
      border-radius:999px;
      color:#464b52;
      font-size:15px;
      font-weight:700;
    }
    .nav-links a:hover,.nav-links a.active{
      background:rgba(24,191,166,.11);
      color:var(--teal-dark);
    }
    .nav-actions{display:flex;gap:10px;align-items:center}
    .menu-toggle{
      display:none;
      width:46px;height:46px;border-radius:14px;
      border:1px solid var(--line);
      background:#fff;
      align-items:center;justify-content:center;flex-direction:column;gap:5px;
    }
    .menu-toggle span{width:20px;height:2px;background:var(--graphite);border-radius:99px;transition:var(--ease)}
    .hero{
      position:relative;
      min-height:720px;
      display:flex;
      align-items:center;
      padding:82px 0 52px;
      overflow:hidden;
      background:
        linear-gradient(120deg,rgba(246,247,245,.95),rgba(236,234,228,.76)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    }
    .hero:before{
      content:"";
      position:absolute;
      width:560px;height:560px;
      right:-210px;top:48px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(24,191,166,.18),rgba(24,191,166,0) 68%);
    }
    .hero:after{
      content:"";
      position:absolute;
      left:-120px;bottom:-160px;
      width:420px;height:420px;
      background:rgba(244,167,66,.12);
      transform:rotate(18deg);
      border-radius:72px;
    }
    .hero-grid{
      position:relative;
      z-index:2;
      display:grid;
      grid-template-columns:minmax(0,1.04fr) minmax(380px,.78fr);
      gap:52px;
      align-items:center;
    }
    .hero-copy .eyebrow{margin-bottom:22px}
    .hero-copy h1{max-width:760px;margin-bottom:22px}
    .hero-copy .lead{max-width:700px;margin-bottom:30px}
    .hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
    .hero-note{
      display:flex;
      gap:14px;
      align-items:flex-start;
      max-width:720px;
      padding:15px 18px;
      border:1px solid rgba(244,167,66,.34);
      background:rgba(255,243,220,.68);
      border-radius:var(--radius);
      color:#70501b;
      font-size:14px;
    }
    .hero-note b{color:#5f4213}
    .hero-panel{
      background:rgba(255,255,255,.78);
      border:1px solid rgba(255,255,255,.72);
      border-radius:32px;
      box-shadow:var(--shadow);
      padding:24px;
      backdrop-filter:blur(14px);
      transform:rotate(-1deg);
    }
    .panel-inner{
      background:linear-gradient(180deg,#fff,#f8f8f5);
      border:1px solid rgba(21,23,28,.08);
      border-radius:24px;
      overflow:hidden;
    }
    .panel-head{
      height:64px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding:0 20px;
      background:var(--graphite);
      color:#fff;
    }
    .panel-dots{display:flex;gap:7px}
    .panel-dots i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.36)}
    .panel-dots i:first-child{background:var(--teal)}
    .panel-body{padding:22px}
    .status-card{
      display:grid;
      grid-template-columns:44px 1fr;
      gap:14px;
      align-items:start;
      padding:16px;
      border:1px solid var(--line-soft);
      border-radius:18px;
      background:#fff;
      margin-bottom:12px;
      transition:var(--ease);
    }
    .status-card:hover{border-color:rgba(24,191,166,.38);transform:translateX(4px);box-shadow:var(--shadow-soft)}
    .status-icon{
      width:44px;height:44px;border-radius:15px;
      display:grid;place-items:center;
      background:rgba(24,191,166,.1);
      color:var(--teal-dark);
      font-weight:850;
    }
    .status-card h3{font-size:17px;margin-bottom:3px}
    .status-card p{font-size:14px;line-height:1.6}
    .index-band{
      position:relative;
      z-index:5;
      margin-top:-28px;
    }
    .band-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      background:#fff;
      border:1px solid rgba(21,23,28,.08);
      border-radius:24px;
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .band-item{
      padding:22px;
      border-right:1px solid rgba(21,23,28,.08);
      display:flex;
      align-items:center;
      gap:13px;
      transition:var(--ease);
    }
    .band-item:last-child{border-right:0}
    .band-item:hover{background:rgba(24,191,166,.06)}
    .band-badge{
      width:38px;height:38px;border-radius:13px;
      background:var(--graphite);
      color:#fff;
      display:grid;place-items:center;
      font-weight:800;
      flex:0 0 auto;
    }
    .band-item strong{display:block;color:var(--graphite);line-height:1.3}
    .band-item span{display:block;color:var(--muted);font-size:13px;margin-top:2px;line-height:1.45}
    .section-head{
      display:flex;
      justify-content:space-between;
      gap:28px;
      align-items:flex-end;
      margin-bottom:34px;
    }
    .section-head .title{max-width:680px}
    .section-head .title .eyebrow{margin-bottom:14px}
    .section-head p{max-width:430px}
    .steps-layout{
      display:grid;
      grid-template-columns:390px 1fr;
      gap:34px;
      align-items:start;
    }
    .step-line{
      position:relative;
      background:#fff;
      border:1px solid var(--line-soft);
      border-radius:var(--radius-lg);
      padding:24px;
      box-shadow:var(--shadow-soft);
    }
    .step-line:before{
      content:"";
      position:absolute;
      left:45px;top:62px;bottom:62px;
      width:2px;background:linear-gradient(var(--teal),rgba(24,191,166,.12));
    }
    .step{
      position:relative;
      display:grid;
      grid-template-columns:42px 1fr;
      gap:16px;
      padding:14px 0;
    }
    .step-num{
      width:42px;height:42px;
      border-radius:50%;
      background:#fff;
      border:2px solid rgba(24,191,166,.48);
      display:grid;place-items:center;
      color:var(--teal-dark);
      font-weight:850;
      z-index:1;
    }
    .step:first-child .step-num{background:var(--amber);border-color:var(--amber);color:var(--graphite)}
    .step h3{font-size:18px;margin-bottom:4px}
    .step p{font-size:14px;line-height:1.65}
    .entry-cards{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:18px;
    }
    .info-card{
      background:#fff;
      border:1px solid var(--line-soft);
      border-radius:var(--radius);
      padding:24px;
      box-shadow:var(--shadow-soft);
      transition:var(--ease);
    }
    .info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(24,191,166,.36)}
    .card-icon{
      width:46px;height:46px;
      border-radius:16px;
      display:grid;place-items:center;
      margin-bottom:18px;
      color:var(--teal-dark);
      background:rgba(24,191,166,.1);
      font-weight:900;
    }
    .info-card h3{margin-bottom:10px}
    .info-card p{font-size:15px}
    .overview{background:var(--sand)}
    .overview-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      grid-template-rows:auto auto;
      gap:18px;
    }
    .wide-card{
      grid-row:span 2;
      min-height:410px;
      padding:28px;
      border-radius:var(--radius-lg);
      background:
        linear-gradient(180deg,rgba(21,23,28,.72),rgba(21,23,28,.88)),
        url('/assets/images/coverpic/cover-1.webp') center/cover no-repeat;
      color:#fff;
      display:flex;
      flex-direction:column;
      justify-content:flex-end;
      overflow:hidden;
      position:relative;
    }
    .wide-card:before{
      content:"";
      position:absolute;
      width:180px;height:180px;
      border:1px solid rgba(24,191,166,.38);
      border-radius:42px;
      right:-54px;top:26px;
      transform:rotate(24deg);
    }
    .wide-card h3{color:#fff;font-size:26px;margin-bottom:12px;position:relative}
    .wide-card p{color:rgba(255,255,255,.78);position:relative}
    .mini-card{
      min-height:196px;
      background:#fff;
      border:1px solid rgba(21,23,28,.08);
      border-radius:var(--radius);
      padding:24px;
      transition:var(--ease);
    }
    .mini-card:hover{border-color:rgba(24,191,166,.36);transform:translateY(-4px);box-shadow:var(--shadow-soft)}
    .mini-card .card-icon{margin-bottom:16px}
    .mini-card h3{font-size:19px;margin-bottom:8px}
    .mini-card p{font-size:14.5px;line-height:1.65}
    .guide-flow{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
      position:relative;
    }
    .flow-node{
      background:#fff;
      border:1px solid var(--line-soft);
      border-radius:var(--radius);
      padding:24px;
      min-height:210px;
      box-shadow:var(--shadow-soft);
      position:relative;
      transition:var(--ease);
    }
    .flow-node:hover{transform:translateY(-4px);border-color:rgba(24,191,166,.36)}
    .flow-node:not(:last-child):after{
      content:"→";
      position:absolute;
      right:-14px;
      top:42px;
      width:28px;height:28px;
      border-radius:50%;
      background:var(--teal);
      color:#fff;
      display:grid;place-items:center;
      font-weight:900;
      z-index:2;
    }
    .flow-index{
      display:inline-grid;
      place-items:center;
      width:36px;height:36px;
      border-radius:12px;
      background:var(--graphite);
      color:#fff;
      font-weight:850;
      margin-bottom:18px;
    }
    .flow-node h3{margin-bottom:10px}
    .flow-node p{font-size:15px;line-height:1.68}
    .articles{background:#fff}
    .article-layout{
      display:grid;
      grid-template-columns:330px 1fr;
      gap:34px;
      align-items:start;
    }
    .article-intro{
      position:sticky;
      top:106px;
      background:var(--mist);
      border:1px solid var(--line-soft);
      border-radius:var(--radius-lg);
      padding:26px;
    }
    .tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
    .tag{
      display:inline-flex;
      align-items:center;
      padding:7px 12px;
      border-radius:999px;
      background:#fff;
      border:1px solid var(--line);
      color:#50555d;
      font-size:13px;
      font-weight:700;
    }
    .tag.active,.tag:hover{background:rgba(24,191,166,.1);border-color:rgba(24,191,166,.42);color:var(--teal-dark)}
    .article-list{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:18px;
    }
    .article-card{
      border:1px solid var(--line-soft);
      border-radius:var(--radius);
      overflow:hidden;
      background:#fff;
      box-shadow:var(--shadow-soft);
      transition:var(--ease);
    }
    .article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(24,191,166,.36)}
    .article-thumb{
      height:168px;
      overflow:hidden;
      background:var(--sand);
    }
    .article-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .28s ease-out}
    .article-card:hover .article-thumb img{transform:scale(1.04)}
    .article-body{padding:20px}
    .article-meta{
      display:flex;
      justify-content:space-between;
      gap:12px;
      align-items:center;
      margin-bottom:10px;
      font-size:13px;
      color:var(--weak);
    }
    .article-meta b{color:var(--teal-dark)}
    .article-body h3{font-size:19px;margin-bottom:10px}
    .article-body p{font-size:14.5px;line-height:1.66;margin-bottom:16px}
    .read-link{
      display:inline-flex;
      align-items:center;
      gap:6px;
      font-weight:800;
      color:var(--graphite);
      font-size:14px;
    }
    .read-link:hover{color:var(--teal-dark);gap:10px}
    .compare-grid{
      display:grid;
      grid-template-columns:.86fr 1.14fr;
      gap:28px;
      align-items:stretch;
    }
    .compare-visual{
      border-radius:var(--radius-lg);
      overflow:hidden;
      min-height:420px;
      background:
        linear-gradient(180deg,rgba(21,23,28,.1),rgba(21,23,28,.55)),
        url('/assets/images/coverpic/cover-2.webp') center/cover no-repeat;
      display:flex;
      align-items:flex-end;
      padding:28px;
    }
    .visual-caption{
      background:rgba(255,255,255,.9);
      border-radius:20px;
      padding:20px;
      border:1px solid rgba(255,255,255,.85);
      backdrop-filter:blur(10px);
    }
    .compare-table{
      background:#fff;
      border:1px solid var(--line-soft);
      border-radius:var(--radius-lg);
      overflow:hidden;
      box-shadow:var(--shadow-soft);
    }
    .table-row{
      display:grid;
      grid-template-columns:180px 1fr;
      border-bottom:1px solid var(--line-soft);
    }
    .table-row:last-child{border-bottom:0}
    .table-key{
      padding:20px;
      background:rgba(21,23,28,.035);
      font-weight:800;
      color:var(--graphite);
    }
    .table-value{padding:20px;color:var(--muted)}
    .pill{
      display:inline-flex;
      padding:3px 9px;
      margin-right:7px;
      border-radius:999px;
      background:rgba(24,191,166,.12);
      color:var(--teal-dark);
      font-size:12px;
      font-weight:800;
      vertical-align:middle;
    }
    .trust{
      background:var(--graphite);
      color:#fff;
      position:relative;
      overflow:hidden;
    }
    .trust:before{
      content:"";
      position:absolute;
      inset:auto -80px -160px auto;
      width:360px;height:360px;
      border-radius:80px;
      border:1px solid rgba(24,191,166,.28);
      transform:rotate(23deg);
    }
    .trust .section-head h2{color:#fff}
    .trust .section-head p{color:rgba(255,255,255,.68)}
    .trust-grid{
      display:grid;
      grid-template-columns:1fr 1fr 1fr;
      gap:18px;
      position:relative;
    }
    .trust-card{
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.1);
      border-radius:var(--radius);
      padding:24px;
      transition:var(--ease);
    }
    .trust-card:hover{background:rgba(255,255,255,.09);border-color:rgba(24,191,166,.42);transform:translateY(-4px)}
    .trust-card h3{color:#fff;margin-bottom:10px}
    .trust-card p{color:rgba(255,255,255,.68);font-size:15px}
    .faq-list{
      display:grid;
      gap:14px;
      max-width:930px;
      margin:0 auto;
    }
    .faq-item{
      background:#fff;
      border:1px solid var(--line-soft);
      border-radius:18px;
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    .faq-q{
      width:100%;
      min-height:64px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      padding:18px 22px;
      text-align:left;
      color:var(--graphite);
      font-weight:800;
    }
    .faq-q span:last-child{
      width:28px;height:28px;
      border-radius:50%;
      background:rgba(24,191,166,.1);
      color:var(--teal-dark);
      display:grid;place-items:center;
      flex:0 0 auto;
      transition:var(--ease);
    }
    .faq-a{
      max-height:0;
      overflow:hidden;
      transition:max-height .24s ease-out;
    }
    .faq-a p{
      padding:0 22px 20px;
      font-size:15px;
      line-height:1.75;
    }
    .faq-item.open{border-color:rgba(24,191,166,.38)}
    .faq-item.open .faq-q span:last-child{transform:rotate(45deg);background:var(--teal);color:#fff}
    .faq-item.open .faq-a{max-height:220px}
    .cta{
      padding:0 0 88px;
    }
    .cta-box{
      border-radius:32px;
      background:
        linear-gradient(120deg,rgba(236,234,228,.95),rgba(255,255,255,.85)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      border:1px solid rgba(21,23,28,.08);
      box-shadow:var(--shadow);
      padding:42px;
      display:grid;
      grid-template-columns:1fr auto;
      gap:28px;
      align-items:center;
      overflow:hidden;
      position:relative;
    }
    .cta-box:after{
      content:"";
      position:absolute;
      right:34%;top:-70px;
      width:180px;height:180px;
      border-radius:48px;
      background:rgba(24,191,166,.1);
      transform:rotate(25deg);
    }
    .cta-box h2{margin-bottom:10px;position:relative;z-index:1}
    .cta-box p{max-width:690px;position:relative;z-index:1}
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1}
    .site-footer{
      background:var(--graphite);
      color:rgba(255,255,255,.72);
      padding:58px 0 24px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.35fr .8fr .9fr .9fr;
      gap:34px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(255,255,255,.1);
    }
    .footer-logo{
      display:flex;align-items:center;gap:12px;margin-bottom:14px;color:#fff;font-weight:850;
    }
    .footer-logo .logo-mark{width:38px;height:38px}
    .footer-col h3{
      color:#fff;
      font-size:16px;
      margin-bottom:14px;
    }
    .footer-col p,.footer-col li{font-size:14px;line-height:1.75;color:rgba(255,255,255,.65)}
    .footer-col ul{list-style:none;display:grid;gap:8px}
    .footer-col a:hover{color:var(--teal)}
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:20px;
      padding-top:22px;
      font-size:13px;
      color:rgba(255,255,255,.55);
      flex-wrap:wrap;
    }
    .mobile-panel{
      display:none;
      background:#fff;
      border-top:1px solid var(--line-soft);
      padding:12px 0 18px;
    }
    .mobile-panel a{
      display:flex;
      padding:13px 0;
      font-weight:800;
      border-bottom:1px solid rgba(21,23,28,.07);
    }
    .mobile-panel .mobile-actions{display:grid;gap:10px;margin-top:14px}
    @media (max-width:1100px){
      .container{width:min(var(--container),calc(100% - 56px))}
      .hero-grid{grid-template-columns:1fr;gap:36px}
      .hero{min-height:auto;padding-top:64px}
      .hero-panel{max-width:680px;transform:none}
      .steps-layout,.article-layout,.compare-grid{grid-template-columns:1fr}
      .article-intro{position:relative;top:auto}
      .overview-grid{grid-template-columns:1fr 1fr}
      .wide-card{grid-column:span 2;grid-row:auto;min-height:330px}
      .guide-flow{grid-template-columns:1fr 1fr}
      .flow-node:nth-child(2):after{display:none}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:860px){
      .topbar{height:auto;padding:8px 0}
      .topbar .container{flex-direction:column;align-items:flex-start;gap:2px}
      .nav-links,.nav-actions{display:none}
      .menu-toggle{display:flex}
      .mobile-panel.open{display:block}
      .nav-wrap{height:68px}
      .section{padding:62px 0}
      .section-sm{padding:52px 0}
      .section-head{flex-direction:column;align-items:flex-start;margin-bottom:26px}
      .band-grid{grid-template-columns:1fr 1fr}
      .band-item:nth-child(2){border-right:0}
      .band-item{border-bottom:1px solid rgba(21,23,28,.08)}
      .band-item:nth-child(3),.band-item:nth-child(4){border-bottom:0}
      .entry-cards,.article-list,.trust-grid{grid-template-columns:1fr}
      .overview-grid{grid-template-columns:1fr}
      .wide-card{grid-column:auto}
      .guide-flow{grid-template-columns:1fr}
      .flow-node:not(:last-child):after{
        content:"↓";
        right:auto;
        left:26px;
        top:auto;
        bottom:-14px;
      }
      .table-row{grid-template-columns:1fr}
      .table-key{padding-bottom:8px}
      .table-value{padding-top:8px}
      .cta-box{grid-template-columns:1fr;padding:30px}
    }
    @media (max-width:560px){
      .container{width:calc(100% - 36px)}
      body{font-size:15px}
      .logo-text strong{font-size:15px}
      .logo-text span{display:none}
      .hero{padding:48px 0 44px}
      .hero-copy .lead{font-size:16px}
      .hero-cta,.cta-actions{display:grid;width:100%}
      .btn{width:100%;min-height:50px}
      .hero-panel{padding:14px;border-radius:24px}
      .panel-head{height:56px}
      .panel-body{padding:14px}
      .band-grid{grid-template-columns:1fr}
      .band-item{border-right:0!important;border-bottom:1px solid rgba(21,23,28,.08)!important}
      .band-item:last-child{border-bottom:0!important}
      .step-line{padding:18px}
      .step-line:before{left:39px}
      .info-card,.mini-card,.flow-node,.article-body,.trust-card{padding:20px}
      .article-thumb{height:190px}
      .compare-visual{min-height:320px;padding:18px}
      .faq-q{padding:16px 18px}
      .faq-a p{padding:0 18px 18px}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{flex-direction:column}
    }

/* roulang page: category1 */
:root{
      --ink:#15171C;
      --text:#25272B;
      --muted:#666B73;
      --weak:#9298A0;
      --brand:#18BFA6;
      --brand-dark:#0E8E7B;
      --amber:#F4A742;
      --soft-orange:#FFB86B;
      --bg:#F6F7F5;
      --sand:#ECEAE4;
      --white:#FFFFFF;
      --line:#D8DAD6;
      --line-soft:rgba(21,23,28,.10);
      --shadow:0 12px 36px rgba(21,23,28,.08);
      --shadow-hover:0 18px 46px rgba(21,23,28,.13);
      --radius-sm:12px;
      --radius:18px;
      --radius-lg:26px;
      --container:1200px;
      --header-h:76px;
      --ease:180ms ease-out;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      background:var(--bg);
      color:var(--text);
      line-height:1.75;
      font-size:16px;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    button{border:0;background:none;cursor:pointer}
    ul,ol{list-style:none}
    .container{width:min(var(--container),calc(100% - 80px));margin:0 auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(246,247,245,.92);
      backdrop-filter:saturate(140%) blur(18px);
      border-bottom:1px solid var(--line-soft);
    }
    .nav-wrap{
      min-height:var(--header-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:28px;
    }
    .logo,.footer-logo{
      display:inline-flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
    }
    .logo-mark{
      width:42px;
      height:42px;
      border-radius:14px;
      background:
        linear-gradient(135deg,rgba(24,191,166,.18),rgba(244,167,66,.16)),
        var(--ink);
      position:relative;
      box-shadow:0 10px 24px rgba(21,23,28,.15);
      flex:0 0 auto;
    }
    .logo-mark:before{
      content:"";
      position:absolute;
      inset:10px;
      border:2px solid var(--brand);
      border-left-color:transparent;
      border-radius:9px;
      transform:rotate(-12deg);
    }
    .logo-mark:after{
      content:"";
      position:absolute;
      right:9px;
      top:18px;
      width:12px;
      height:2px;
      background:var(--amber);
      box-shadow:0 5px 0 var(--brand);
      border-radius:99px;
    }
    .logo-text{display:flex;flex-direction:column;line-height:1.25}
    .logo-text strong{font-size:18px;color:var(--ink);letter-spacing:.2px}
    .logo-text span{font-size:12px;color:var(--muted);white-space:nowrap}
    .nav-links{
      display:flex;
      align-items:center;
      gap:8px;
      padding:6px;
      background:rgba(236,234,228,.68);
      border:1px solid rgba(216,218,214,.75);
      border-radius:999px;
    }
    .nav-links a{
      padding:10px 16px;
      border-radius:999px;
      font-size:14px;
      color:var(--muted);
      transition:background var(--ease),color var(--ease),box-shadow var(--ease);
    }
    .nav-links a:hover,.nav-links a:focus{
      color:var(--ink);
      background:rgba(255,255,255,.82);
      outline:none;
    }
    .nav-links a.active{
      color:var(--ink);
      background:var(--white);
      box-shadow:0 8px 20px rgba(21,23,28,.07);
      font-weight:700;
    }
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:44px;
      padding:12px 18px;
      border-radius:999px;
      font-weight:700;
      font-size:14px;
      line-height:1.2;
      transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease),background var(--ease),color var(--ease);
      cursor:pointer;
      white-space:nowrap;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn:focus-visible,.menu-toggle:focus-visible,input:focus-visible,a:focus-visible{
      outline:3px solid rgba(24,191,166,.28);
      outline-offset:3px;
    }
    .btn-primary{
      background:var(--brand);
      color:#fff;
      box-shadow:0 12px 26px rgba(24,191,166,.28);
    }
    .btn-primary:hover{background:var(--brand-dark);box-shadow:0 16px 34px rgba(24,191,166,.34)}
    .btn-secondary{
      background:rgba(255,255,255,.7);
      color:var(--ink);
      border:1px solid rgba(21,23,28,.18);
    }
    .btn-secondary:hover{border-color:rgba(24,191,166,.55);background:#fff}
    .menu-toggle{
      display:none;
      width:46px;
      height:46px;
      border-radius:14px;
      border:1px solid var(--line);
      background:var(--white);
      align-items:center;
      justify-content:center;
      flex-direction:column;
      gap:5px;
    }
    .menu-toggle span{
      width:20px;
      height:2px;
      border-radius:999px;
      background:var(--ink);
      transition:transform var(--ease),opacity var(--ease);
    }
    .mobile-panel{
      display:none;
      border-top:1px solid var(--line-soft);
      background:rgba(246,247,245,.98);
    }
    .mobile-panel .container{padding:14px 0 20px;display:grid;gap:10px}
    .mobile-panel a:not(.btn){
      min-height:46px;
      display:flex;
      align-items:center;
      padding:10px 14px;
      border-radius:14px;
      background:rgba(255,255,255,.72);
      color:var(--ink);
      font-weight:700;
    }
    .mobile-actions{display:grid;gap:10px;margin-top:4px}
    .section{padding:82px 0}
    .section.alt{background:var(--sand)}
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:28px;
      margin-bottom:34px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      background:rgba(24,191,166,.10);
      color:var(--brand-dark);
      font-weight:800;
      font-size:13px;
      margin-bottom:14px;
    }
    .eyebrow:before{
      content:"";
      width:8px;
      height:8px;
      border-radius:99px;
      background:var(--brand);
      box-shadow:0 0 0 5px rgba(24,191,166,.12);
    }
    h1,h2,h3{color:var(--ink);line-height:1.22}
    h1{font-size:46px;letter-spacing:-1px}
    h2{font-size:34px;letter-spacing:-.4px}
    h3{font-size:21px}
    .lead{font-size:17px;color:var(--muted);max-width:760px}
    .muted{color:var(--muted)}
    .page-hero{
      position:relative;
      overflow:hidden;
      min-height:360px;
      background:
        linear-gradient(105deg,rgba(246,247,245,.96),rgba(246,247,245,.82) 55%,rgba(236,234,228,.72)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      border-bottom:1px solid var(--line-soft);
    }
    .page-hero:before{
      content:"";
      position:absolute;
      width:420px;
      height:420px;
      border-radius:999px;
      right:-130px;
      top:-180px;
      background:radial-gradient(circle,rgba(24,191,166,.20),rgba(24,191,166,0) 68%);
    }
    .page-hero:after{
      content:"";
      position:absolute;
      width:360px;
      height:220px;
      right:7%;
      bottom:-90px;
      border:1px solid rgba(24,191,166,.24);
      border-radius:42px;
      transform:rotate(-8deg);
    }
    .hero-grid{
      position:relative;
      z-index:1;
      min-height:360px;
      display:grid;
      grid-template-columns:1.04fr .76fr;
      gap:44px;
      align-items:center;
      padding:54px 0;
    }
    .breadcrumb{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      color:var(--muted);
      font-size:14px;
      margin-bottom:18px;
    }
    .breadcrumb a{transition:color var(--ease)}
    .breadcrumb a:hover{color:var(--brand-dark)}
    .breadcrumb span:last-child{color:var(--ink);font-weight:700}
    .hero-copy p{margin-top:18px}
    .hero-buttons{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:28px;
    }
    .guide-panel{
      border-radius:var(--radius-lg);
      background:rgba(255,255,255,.84);
      border:1px solid rgba(255,255,255,.9);
      box-shadow:var(--shadow);
      padding:22px;
      backdrop-filter:blur(10px);
    }
    .search-box{
      display:flex;
      gap:10px;
      padding:8px;
      border-radius:999px;
      background:var(--bg);
      border:1px solid var(--line);
      margin-bottom:18px;
    }
    .search-box input{
      min-width:0;
      flex:1;
      border:0;
      background:transparent;
      padding:0 12px;
      color:var(--text);
      outline:none;
    }
    .search-box input::placeholder{color:var(--weak)}
    .panel-list{display:grid;gap:12px}
    .panel-item{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:14px;
      border-radius:16px;
      background:#fff;
      border:1px solid rgba(216,218,214,.7);
      transition:border-color var(--ease),transform var(--ease);
    }
    .panel-item:hover{border-color:rgba(24,191,166,.35);transform:translateY(-2px)}
    .panel-icon{
      width:34px;
      height:34px;
      border-radius:12px;
      display:grid;
      place-items:center;
      background:rgba(24,191,166,.10);
      color:var(--brand-dark);
      font-weight:900;
      flex:0 0 auto;
    }
    .panel-item strong{display:block;color:var(--ink);line-height:1.35}
    .panel-item span{display:block;color:var(--muted);font-size:13px;margin-top:2px}
    .quick-tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:28px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      min-height:36px;
      padding:8px 13px;
      border-radius:999px;
      background:#fff;
      border:1px solid var(--line);
      color:var(--muted);
      font-size:14px;
      font-weight:700;
      transition:background var(--ease),border-color var(--ease),color var(--ease),transform var(--ease);
    }
    .tag.active,.tag:hover{
      background:rgba(24,191,166,.12);
      border-color:rgba(24,191,166,.45);
      color:var(--brand-dark);
      transform:translateY(-1px);
    }
    .guide-layout{
      display:grid;
      grid-template-columns:.86fr 1.14fr;
      gap:34px;
      align-items:start;
    }
    .sticky-note{
      position:sticky;
      top:100px;
      padding:28px;
      border-radius:var(--radius-lg);
      background:var(--ink);
      color:#DDE2E0;
      overflow:hidden;
      box-shadow:var(--shadow);
    }
    .sticky-note:before{
      content:"";
      position:absolute;
      width:160px;
      height:160px;
      right:-46px;
      top:-46px;
      border-radius:999px;
      background:rgba(24,191,166,.18);
    }
    .sticky-note h2,.sticky-note h3{color:#fff}
    .sticky-note p{color:#BFC5C3;margin-top:14px}
    .note-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
    .note-badges span{
      display:inline-flex;
      padding:7px 10px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.12);
      color:#E7ECEA;
      font-size:13px;
    }
    .feature-mosaic{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:18px;
    }
    .feature-card{
      position:relative;
      padding:24px;
      min-height:190px;
      border-radius:var(--radius);
      background:var(--white);
      border:1px solid rgba(216,218,214,.82);
      box-shadow:0 8px 24px rgba(21,23,28,.045);
      transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
      overflow:hidden;
    }
    .feature-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(24,191,166,.38);
    }
    .feature-card.wide{grid-column:1/-1;min-height:220px;display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:center}
    .feature-card img{
      width:100%;
      height:170px;
      object-fit:cover;
      border-radius:18px;
      border:1px solid var(--line-soft);
    }
    .feature-icon{
      width:42px;
      height:42px;
      display:grid;
      place-items:center;
      border-radius:14px;
      background:linear-gradient(135deg,rgba(24,191,166,.14),rgba(244,167,66,.16));
      color:var(--ink);
      font-weight:900;
      margin-bottom:16px;
    }
    .feature-card h3{margin-bottom:10px}
    .feature-card p{color:var(--muted);font-size:15px}
    .scenario-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .scenario-card{
      padding:24px;
      border-radius:var(--radius);
      background:rgba(255,255,255,.76);
      border:1px solid rgba(216,218,214,.8);
      transition:transform var(--ease),border-color var(--ease),background var(--ease);
    }
    .scenario-card:hover{transform:translateY(-3px);border-color:rgba(24,191,166,.4);background:#fff}
    .scenario-card .num{
      width:36px;
      height:36px;
      border-radius:999px;
      display:grid;
      place-items:center;
      background:var(--ink);
      color:#fff;
      font-weight:900;
      margin-bottom:16px;
    }
    .scenario-card h3{margin-bottom:10px}
    .scenario-card p{font-size:15px;color:var(--muted)}
    .process-wrap{
      border-radius:var(--radius-lg);
      background:#fff;
      border:1px solid rgba(216,218,214,.84);
      box-shadow:var(--shadow);
      padding:34px;
    }
    .process-line{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:0;
      position:relative;
    }
    .process-line:before{
      content:"";
      position:absolute;
      left:9%;
      right:9%;
      top:31px;
      height:2px;
      background:linear-gradient(90deg,var(--brand),rgba(244,167,66,.78));
    }
    .process-step{
      position:relative;
      padding:0 14px;
      z-index:1;
    }
    .step-dot{
      width:64px;
      height:64px;
      border-radius:22px;
      display:grid;
      place-items:center;
      background:var(--bg);
      border:2px solid rgba(24,191,166,.5);
      color:var(--ink);
      font-weight:900;
      margin-bottom:18px;
      box-shadow:0 0 0 8px #fff;
    }
    .process-step:nth-child(2) .step-dot{border-color:rgba(244,167,66,.72)}
    .process-step h3{font-size:19px;margin-bottom:8px}
    .process-step p{font-size:14px;color:var(--muted)}
    .compare-box{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:20px;
      align-items:stretch;
    }
    .compare-card{
      padding:28px;
      border-radius:var(--radius-lg);
      background:#fff;
      border:1px solid rgba(216,218,214,.82);
      box-shadow:0 8px 22px rgba(21,23,28,.04);
    }
    .compare-card.dark{
      background:var(--ink);
      color:#DCE1DF;
      border-color:rgba(21,23,28,.1);
    }
    .compare-card.dark h3{color:#fff}
    .compare-card h3{margin-bottom:16px}
    .check-list{display:grid;gap:12px}
    .check-list li{
      display:grid;
      grid-template-columns:24px 1fr;
      gap:10px;
      color:var(--muted);
      font-size:15px;
    }
    .dark .check-list li{color:#C9CECC}
    .check-list li:before{
      content:"✓";
      width:24px;
      height:24px;
      border-radius:9px;
      display:grid;
      place-items:center;
      background:rgba(24,191,166,.13);
      color:var(--brand-dark);
      font-weight:900;
      line-height:1;
    }
    .dark .check-list li:before{background:rgba(24,191,166,.18);color:var(--brand)}
    .resource-strip{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:26px;
      align-items:center;
      padding:26px;
      border-radius:var(--radius-lg);
      background:
        linear-gradient(120deg,rgba(255,255,255,.88),rgba(255,255,255,.68)),
        url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      border:1px solid rgba(216,218,214,.82);
      box-shadow:var(--shadow);
    }
    .resource-strip img{
      width:100%;
      height:240px;
      object-fit:cover;
      border-radius:20px;
      border:1px solid rgba(255,255,255,.75);
    }
    .resource-list{display:grid;gap:12px;margin-top:18px}
    .resource-list a{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding:14px 16px;
      border-radius:16px;
      background:#fff;
      border:1px solid rgba(216,218,214,.85);
      font-weight:700;
      transition:transform var(--ease),border-color var(--ease),color var(--ease);
    }
    .resource-list a:hover{transform:translateX(3px);border-color:rgba(24,191,166,.42);color:var(--brand-dark)}
    .faq-grid{
      display:grid;
      grid-template-columns:.78fr 1.22fr;
      gap:34px;
      align-items:start;
    }
    .faq-list{display:grid;gap:14px}
    .faq-item{
      border-radius:18px;
      background:#fff;
      border:1px solid rgba(216,218,214,.86);
      overflow:hidden;
      transition:border-color var(--ease),box-shadow var(--ease);
    }
    .faq-item:hover{border-color:rgba(24,191,166,.38);box-shadow:0 10px 24px rgba(21,23,28,.05)}
    .faq-q{
      width:100%;
      min-height:58px;
      padding:18px 20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      color:var(--ink);
      font-weight:800;
      text-align:left;
    }
    .faq-q span:last-child{
      width:26px;
      height:26px;
      border-radius:999px;
      display:grid;
      place-items:center;
      background:rgba(24,191,166,.12);
      color:var(--brand-dark);
      flex:0 0 auto;
      transition:transform var(--ease);
    }
    .faq-a{
      display:none;
      padding:0 20px 20px;
      color:var(--muted);
      font-size:15px;
    }
    .faq-item.open .faq-a{display:block}
    .faq-item.open .faq-q span:last-child{transform:rotate(45deg)}
    .cta-band{
      padding:36px;
      border-radius:30px;
      background:
        radial-gradient(circle at 80% 20%,rgba(24,191,166,.20),transparent 32%),
        linear-gradient(135deg,var(--ink),#22262D);
      color:#E7ECEA;
      display:grid;
      grid-template-columns:1fr auto;
      gap:26px;
      align-items:center;
      overflow:hidden;
      position:relative;
    }
    .cta-band h2{color:#fff;margin-bottom:10px}
    .cta-band p{color:#C6CCCA;max-width:720px}
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end}
    .site-footer{
      background:var(--ink);
      color:#C9CECC;
      padding:62px 0 26px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr 1fr 1fr;
      gap:34px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(255,255,255,.12);
    }
    .footer-logo{margin-bottom:16px}
    .footer-logo strong{color:#fff;font-size:18px}
    .footer-col p{color:#B7BDBA;font-size:14px}
    .footer-col h3{color:#fff;font-size:17px;margin-bottom:14px}
    .footer-col ul{display:grid;gap:9px}
    .footer-col li,.footer-col a{font-size:14px;color:#B7BDBA}
    .footer-col a{transition:color var(--ease),padding-left var(--ease)}
    .footer-col a:hover{color:var(--brand);padding-left:3px}
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:20px;
      padding-top:20px;
      color:#929A97;
      font-size:13px;
    }
    @media (max-width:1080px){
      .container{width:min(var(--container),calc(100% - 56px))}
      .nav-actions{display:none}
      .hero-grid,.guide-layout,.faq-grid{grid-template-columns:1fr}
      .sticky-note{position:relative;top:auto}
      .feature-card.wide{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:860px){
      .nav-links{display:none}
      .menu-toggle{display:flex}
      .mobile-panel.open{display:block}
      .menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
      .menu-toggle.open span:nth-child(2){opacity:0}
      .menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
      .page-hero,.hero-grid{min-height:auto}
      h1{font-size:36px}
      h2{font-size:28px}
      .section{padding:58px 0}
      .section-head{display:block}
      .section-head .lead{margin-top:12px}
      .scenario-grid,.compare-box,.resource-strip{grid-template-columns:1fr}
      .process-line{grid-template-columns:1fr;gap:22px}
      .process-line:before{left:31px;right:auto;top:20px;bottom:20px;width:2px;height:auto;background:linear-gradient(180deg,var(--brand),rgba(244,167,66,.78))}
      .process-step{display:grid;grid-template-columns:64px 1fr;gap:18px;padding:0}
      .step-dot{margin-bottom:0}
      .cta-band{grid-template-columns:1fr}
      .cta-actions{justify-content:flex-start}
    }
    @media (max-width:620px){
      .container{width:calc(100% - 36px)}
      .logo-text span{display:none}
      .logo-mark{width:38px;height:38px;border-radius:13px}
      .hero-grid{padding:42px 0;gap:28px}
      h1{font-size:31px;letter-spacing:-.4px}
      h2{font-size:25px}
      h3{font-size:19px}
      .lead{font-size:15px}
      .hero-buttons,.cta-actions{display:grid;grid-template-columns:1fr}
      .btn{width:100%}
      .search-box{border-radius:18px;display:grid}
      .search-box .btn{min-height:42px}
      .feature-mosaic{grid-template-columns:1fr}
      .feature-card.wide{min-height:auto}
      .process-wrap,.cta-band,.sticky-note,.resource-strip{padding:22px;border-radius:22px}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{flex-direction:column}
    }