/* roulang page: index */
:root{
      --ink:#14233b;
      --ink-soft:#53627a;
      --muted:#8793a6;
      --line:#dfe6ef;
      --paper:#f6f8fb;
      --white:#ffffff;
      --navy:#122542;
      --blue:#2d6cdf;
      --blue-dark:#1f51b1;
      --cyan:#35c8d6;
      --gold:#f2b84b;
      --green:#39a979;
      --danger:#e56a67;
      --radius-sm:10px;
      --radius-md:18px;
      --radius-lg:28px;
      --shadow-sm:0 8px 24px rgba(24,47,83,.07);
      --shadow-md:0 18px 50px rgba(24,47,83,.12);
      --shadow-lg:0 28px 80px rgba(15,40,80,.2);
      --container:1200px;
      --ease:all .28s ease;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      background:var(--paper);
      color:var(--ink);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      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{font:inherit}
    button{cursor:pointer;border:0}
    ul,ol{list-style:none}
    :focus-visible{outline:3px solid rgba(53,200,214,.55);outline-offset:4px}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:6px 12px;border:1px solid rgba(45,108,223,.2);
      border-radius:999px;color:var(--blue);background:#eef5ff;
      font-size:13px;font-weight:700;letter-spacing:.04em
    }
    .eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan)}
    .section{padding:104px 0;position:relative}
    .section-head{max-width:720px;margin-bottom:42px}
    .section-head.center{margin-left:auto;margin-right:auto;text-align:center}
    .section-head h2{font-size:clamp(30px,4vw,48px);line-height:1.2;letter-spacing:-.04em;margin:16px 0}
    .section-head p{font-size:17px;color:var(--ink-soft);line-height:1.9}
    .header{
      position:sticky;top:0;z-index:30;background:rgba(255,255,255,.9);
      backdrop-filter:blur(18px);border-bottom:1px solid rgba(223,230,239,.8)
    }
    .nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:12px;font-size:22px;font-weight:900;letter-spacing:-.04em;white-space:nowrap}
    .brand-mark{
      width:38px;height:38px;border-radius:13px;background:var(--navy);
      display:grid;place-items:center;color:#fff;font-size:18px;box-shadow:0 8px 18px rgba(18,37,66,.2)
    }
    .nav{display:flex;align-items:center;gap:5px}
    .nav a{padding:10px 13px;border-radius:10px;color:var(--ink-soft);font-size:14px;font-weight:700;white-space:nowrap}
    .nav a:hover,.nav a.active{background:#eef5ff;color:var(--blue)}
    .nav-cta{display:flex;align-items:center;gap:12px}
    .nav-note{color:var(--muted);font-size:13px}
    .menu-toggle{display:none;background:transparent;color:var(--navy);font-size:25px}
    .hero{
      min-height:720px;padding:82px 0 72px;overflow:hidden;
      background:
        linear-gradient(110deg,rgba(11,31,62,.95),rgba(18,50,91,.78) 55%,rgba(18,50,91,.56)),
        url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
      color:#fff;position:relative
    }
    .hero:after{content:"";position:absolute;width:560px;height:560px;border:1px solid rgba(255,255,255,.12);border-radius:50%;right:-160px;top:-150px}
    .hero-grid{display:grid;grid-template-columns:.9fr 1.1fr;align-items:center;gap:60px;position:relative;z-index:1}
    .hero-copy{max-width:570px}
    .hero .eyebrow{color:#bdebf1;background:rgba(53,200,214,.12);border-color:rgba(150,239,245,.25)}
    .hero h1{font-size:clamp(40px,5.2vw,72px);line-height:1.1;letter-spacing:-.065em;margin:22px 0}
    .hero h1 span{color:#77e4e7}
    .hero-desc{color:rgba(255,255,255,.78);font-size:18px;line-height:1.95;max-width:560px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 28px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;
      padding:13px 21px;border-radius:12px;font-weight:800;font-size:15px;
      transition:var(--ease);border:1px solid transparent
    }
    .btn-primary{background:var(--cyan);color:#082d4a;box-shadow:0 10px 22px rgba(53,200,214,.22)}
    .btn-primary:hover{background:#6de4e8;transform:translateY(-2px);box-shadow:0 14px 28px rgba(53,200,214,.32)}
    .btn-light{background:#fff;color:var(--navy)}
    .btn-light:hover{background:#eafaff;transform:translateY(-2px)}
    .btn-outline{border-color:rgba(255,255,255,.32);color:#fff;background:rgba(255,255,255,.05)}
    .btn-outline:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.6)}
    .hero-points{display:flex;gap:22px;flex-wrap:wrap;color:rgba(255,255,255,.72);font-size:13px}
    .hero-points span{display:flex;align-items:center;gap:7px}
    .hero-points i{width:8px;height:8px;border-radius:50%;background:var(--gold)}
    .stage{position:relative;min-height:470px;display:flex;align-items:center;justify-content:center}
    .stage-frame{
      width:min(600px,100%);padding:13px;border-radius:24px;background:rgba(255,255,255,.16);
      border:1px solid rgba(255,255,255,.25);box-shadow:var(--shadow-lg);transform:rotate(2deg)
    }
    .stage-screen{overflow:hidden;border-radius:16px;background:#edf3f9;position:relative}
    .stage-screen img{width:100%;height:355px;object-fit:cover}
    .screen-bar{position:absolute;left:22px;right:22px;top:20px;display:flex;align-items:center;justify-content:space-between}
    .screen-brand{color:var(--navy);font-weight:900;background:rgba(255,255,255,.86);padding:7px 11px;border-radius:8px;font-size:12px}
    .screen-status{color:#fff;background:var(--green);font-size:11px;padding:6px 10px;border-radius:999px}
    .stage-card{position:absolute;background:#fff;color:var(--ink);padding:17px 19px;border-radius:16px;box-shadow:0 18px 38px rgba(0,0,0,.2);font-size:13px}
    .stage-card strong{display:block;font-size:23px;line-height:1.2;margin-top:4px}
    .stage-card small{color:var(--muted)}
    .stage-card.one{left:0;bottom:42px}.stage-card.two{right:0;top:58px}
    .progress-nav{background:var(--navy);border-top:1px solid rgba(255,255,255,.12);border-bottom:1px solid rgba(255,255,255,.1)}
    .progress-list{display:grid;grid-template-columns:repeat(4,1fr)}
    .progress-item{position:relative;padding:20px 18px 18px 46px;color:rgba(255,255,255,.58);font-size:13px;border-right:1px solid rgba(255,255,255,.1)}
    .progress-item:last-child{border-right:0}
    .progress-item b{display:block;color:#fff;font-size:14px;margin-bottom:3px}
    .progress-item em{position:absolute;left:17px;top:21px;width:20px;height:20px;border-radius:50%;border:1px solid rgba(255,255,255,.4);font-style:normal;text-align:center;line-height:18px;font-size:11px}
    .progress-item.active{background:rgba(53,200,214,.11)}.progress-item.active em{background:var(--cyan);color:var(--navy);border-color:var(--cyan)}
    .light{background:#fff}
    .category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .category-card{position:relative;min-height:235px;overflow:hidden;border-radius:var(--radius-md);color:#fff;box-shadow:var(--shadow-sm)}
    .category-card img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;transition:transform .5s ease}
    .category-card:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,30,55,.04),rgba(10,30,55,.9))}
    .category-card:hover img{transform:scale(1.07)}
    .category-info{position:absolute;z-index:1;left:22px;right:22px;bottom:20px}
    .category-info h3{font-size:22px;margin-bottom:6px}.category-info p{font-size:13px;color:rgba(255,255,255,.78)}
    .category-arrow{position:absolute;right:22px;top:22px;z-index:2;width:32px;height:32px;border-radius:50%;background:rgba(255,255,255,.17);display:grid;place-items:center}
    .intro-layout{display:grid;grid-template-columns:1.08fr .92fr;gap:68px;align-items:center}
    .intro-layout h2{font-size:clamp(30px,4vw,46px);line-height:1.25;letter-spacing:-.05em;margin:17px 0 20px}
    .intro-layout p{color:var(--ink-soft);line-height:1.95;margin-bottom:17px}
    .check-list{display:grid;grid-template-columns:1fr 1fr;gap:13px;margin-top:25px}
    .check-list li{display:flex;gap:10px;color:var(--ink-soft);font-size:14px}
    .check-list i{width:20px;height:20px;flex:0 0 20px;border-radius:50%;background:#e3f7f2;color:var(--green);text-align:center;line-height:20px;font-style:normal;font-size:12px}
    .image-stack{position:relative;padding:26px 0 0 34px}
    .image-stack img{border-radius:var(--radius-lg);height:390px;width:100%;object-fit:cover;box-shadow:var(--shadow-md)}
    .image-stack:before{content:"";position:absolute;left:0;top:0;width:72%;height:80%;border:1px solid #a5dbe3;border-radius:var(--radius-lg);z-index:0}
    .image-stack img{position:relative;z-index:1}
    .floating-label{position:absolute;z-index:2;left:5px;bottom:28px;background:var(--navy);color:#fff;padding:15px 18px;border-radius:14px;box-shadow:var(--shadow-md)}
    .floating-label strong{display:block;font-size:25px;line-height:1.1;color:#7de2e5}.floating-label span{font-size:12px;color:rgba(255,255,255,.7)}
    .feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:17px}
    .feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:27px 23px;transition:var(--ease)}
    .feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:#b8d3f7}
    .feature-icon{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:#eaf3ff;color:var(--blue);font-size:21px;margin-bottom:19px}
    .feature-card:nth-child(2) .feature-icon{background:#e9fbfa;color:#1a9fa9}
    .feature-card:nth-child(3) .feature-icon{background:#fff5df;color:#c78513}
    .feature-card:nth-child(4) .feature-icon{background:#f4edff;color:#8058c7}
    .feature-card h3{font-size:18px;margin-bottom:8px}.feature-card p{color:var(--ink-soft);font-size:14px;line-height:1.8}
    .dark-section{background:var(--navy);color:#fff}
    .dark-section .section-head p{color:rgba(255,255,255,.68)}
    .metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-md);overflow:hidden}
    .metric{padding:30px 25px;background:rgba(255,255,255,.045)}
    .metric strong{display:block;font-size:42px;line-height:1.15;color:#7de2e5;letter-spacing:-.05em}.metric span{color:rgba(255,255,255,.64);font-size:14px}
    .scenario-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px;align-items:stretch}
    .scenario-main{min-height:430px;border-radius:var(--radius-lg);overflow:hidden;position:relative;color:#fff}
    .scenario-main img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
    .scenario-main:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(8,24,48,.94),rgba(8,24,48,.08))}
    .scenario-text{position:absolute;z-index:1;left:30px;right:30px;bottom:28px}.scenario-text h3{font-size:29px;margin:9px 0}.scenario-text p{color:rgba(255,255,255,.78);font-size:14px}
    .scenario-list{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .scenario-item{padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);transition:var(--ease)}
    .scenario-item:hover{box-shadow:var(--shadow-sm);transform:translateY(-4px)}
    .scenario-item span{color:var(--blue);font-size:12px;font-weight:800}.scenario-item h3{font-size:18px;margin:8px 0}.scenario-item p{color:var(--ink-soft);font-size:14px}
    .plans{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}
    .plan{background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:30px 26px;position:relative}
    .plan.featured{border:2px solid var(--blue);box-shadow:var(--shadow-md);transform:translateY(-10px)}
    .plan-badge{position:absolute;right:20px;top:20px;background:#eaf3ff;color:var(--blue);font-size:12px;font-weight:800;padding:5px 9px;border-radius:999px}
    .plan h3{font-size:22px}.plan-sub{color:var(--muted);font-size:13px;margin:5px 0 24px}
    .plan-price{font-size:36px;font-weight:900;letter-spacing:-.05em;margin-bottom:22px}.plan-price small{font-size:14px;font-weight:500;color:var(--muted)}
    .plan li{display:flex;gap:9px;color:var(--ink-soft);font-size:14px;margin:13px 0}.plan li:before{content:"✓";color:var(--green);font-weight:900}
    .plan .btn{width:100%;margin-top:16px}.btn-blue{background:var(--blue);color:#fff}.btn-blue:hover{background:var(--blue-dark);transform:translateY(-2px)}
    .review-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:42px;align-items:center}
    .rating{background:var(--navy);color:#fff;padding:34px;border-radius:var(--radius-lg)}
    .rating-number{font-size:70px;font-weight:900;line-height:1;color:#7de2e5}.stars{color:var(--gold);letter-spacing:4px;margin:9px 0}.rating p{color:rgba(255,255,255,.7);font-size:14px}
    .review-list{display:grid;grid-template-columns:1fr 1fr;gap:17px}.review{padding:23px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md)}.review p{color:var(--ink-soft);font-size:14px;line-height:1.8}.review b{display:block;margin-top:14px;font-size:13px}
    .resource-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px}
    .resource-feature{display:grid;grid-template-columns:.9fr 1.1fr;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden}
    .resource-feature img{width:100%;height:100%;min-height:270px;object-fit:cover}.resource-content{padding:29px}.resource-content h3{font-size:25px;line-height:1.35;margin:12px 0}.resource-content p{color:var(--ink-soft);font-size:14px;line-height:1.85}.resource-content a{display:inline-flex;color:var(--blue);font-weight:800;font-size:14px;margin-top:18px}
    .resource-side{display:grid;gap:15px}.resource-mini{display:flex;gap:16px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:14px}.resource-mini img{width:94px;height:78px;object-fit:cover;border-radius:10px}.resource-mini h3{font-size:16px;line-height:1.45}.resource-mini p{font-size:12px;color:var(--muted);margin-top:5px}
    .news-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:34px}.news-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden}.news-row{display:grid;grid-template-columns:94px 1fr 90px;gap:20px;align-items:center;padding:22px 24px;border-bottom:1px solid var(--line)}.news-row:last-child{border-bottom:0}.news-date{color:var(--blue);font-size:13px;font-weight:800}.news-row h3{font-size:17px;margin-bottom:4px}.news-row p{color:var(--ink-soft);font-size:13px;line-height:1.7}.news-row a{font-size:13px;color:var(--blue);font-weight:800;text-align:right}.news-highlight{background:var(--navy);border-radius:var(--radius-md);padding:30px;color:#fff}.news-highlight img{border-radius:13px;width:100%;height:175px;object-fit:cover;margin-bottom:22px}.news-highlight h3{font-size:23px;line-height:1.4;margin-bottom:10px}.news-highlight p{font-size:14px;color:rgba(255,255,255,.68);line-height:1.85}.news-highlight a{display:inline-block;margin-top:20px;color:#7de2e5;font-weight:800}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}.faq{background:#fff;border:1px solid var(--line);border-radius:14px;padding:23px 25px}.faq h3{font-size:17px;margin-bottom:8px}.faq p{color:var(--ink-soft);font-size:14px;line-height:1.85}
    .download-band{background:linear-gradient(120deg,#dff8f7,#eef5ff);border:1px solid #cbe8ed;border-radius:var(--radius-lg);padding:55px 62px;display:flex;align-items:center;justify-content:space-between;gap:35px}.download-band h2{font-size:clamp(28px,4vw,43px);line-height:1.25;margin:13px 0}.download-band p{color:var(--ink-soft);max-width:680px;line-height:1.9}.download-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}
    .footer{background:#0c1a2e;color:#fff;padding:68px 0 28px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:42px;padding-bottom:46px;border-bottom:1px solid rgba(255,255,255,.12)}.footer .brand{color:#fff;margin-bottom:17px}.footer p,.footer li,.footer a{font-size:13px;color:rgba(255,255,255,.6);line-height:2}.footer a:hover{color:#7de2e5}.footer h3{font-size:15px;margin-bottom:14px;color:#fff}.footer-brand p{max-width:290px}.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:23px;flex-wrap:wrap}.footer-bottom span{font-size:12px;color:rgba(255,255,255,.48)}.footer-links{display:flex;gap:18px;flex-wrap:wrap}
    .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}.reveal.show{opacity:1;transform:none}
    @media(max-width:1024px){.hero-grid,.intro-layout,.scenario-layout,.review-layout,.news-layout,.resource-grid{grid-template-columns:1fr}.hero-copy{max-width:760px}.stage{margin-top:20px}.feature-grid{grid-template-columns:repeat(2,1fr)}.metric-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}.download-band{align-items:flex-start;flex-direction:column}}
    @media(max-width:768px){.container{width:min(var(--container),calc(100% - 32px))}.nav{display:none;position:absolute;left:16px;right:16px;top:70px;background:#fff;border:1px solid var(--line);border-radius:15px;padding:10px;box-shadow:var(--shadow-md);flex-direction:column;align-items:stretch}.nav.open{display:flex}.nav a{padding:12px 14px}.nav-cta{display:none}.menu-toggle{display:block}.hero{padding:62px 0 50px;min-height:auto}.hero h1{font-size:44px}.stage{min-height:380px}.stage-frame{transform:none}.stage-screen img{height:280px}.stage-card.one{left:-5px;bottom:12px}.stage-card.two{right:-5px;top:15px}.progress-list{grid-template-columns:repeat(2,1fr)}.progress-item:nth-child(2){border-right:0}.progress-item:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.1)}.section{padding:75px 0}.category-grid,.plans{grid-template-columns:1fr}.plan.featured{transform:none}.check-list,.scenario-list,.review-list,.faq-grid{grid-template-columns:1fr}.resource-feature{grid-template-columns:1fr}.resource-feature img{height:210px}.news-row{grid-template-columns:1fr;gap:4px}.news-row a{text-align:left;margin-top:7px}.download-band{padding:36px 25px}}
    @media(max-width:520px){body{font-size:15px}.brand{font-size:19px}.brand-mark{width:34px;height:34px}.hero h1{font-size:38px}.hero-desc{font-size:16px}.hero-actions,.download-actions{flex-direction:column;align-items:stretch}.hero-actions .btn,.download-actions .btn{width:100%}.feature-grid,.metric-grid{grid-template-columns:1fr}.stage-card{padding:12px 13px}.stage-card strong{font-size:19px}.stage-card small{font-size:10px}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-links{margin-top:10px}.image-stack{padding-left:12px}.image-stack img{height:290px}.floating-label{left:-3px;bottom:15px}}

/* roulang page: category2 */
:root{
      --ink:#14233b;--ink-soft:#53627a;--muted:#8793a6;--line:#dfe6ef;
      --paper:#f6f8fb;--white:#fff;--navy:#122542;--blue:#2d6cdf;
      --blue-dark:#1f51b1;--cyan:#35c8d6;--gold:#f2b84b;--green:#39a979;
      --danger:#e56a67;--radius-sm:10px;--radius-md:18px;--radius-lg:28px;
      --shadow-sm:0 8px 24px rgba(24,47,83,.07);--shadow-md:0 18px 50px rgba(24,47,83,.12);
      --shadow-lg:0 28px 80px rgba(15,40,80,.2);--container:1200px;--ease:all .28s ease;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;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{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.92);backdrop-filter:blur(18px);border-bottom:1px solid rgba(223,230,239,.8)}
    .nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:12px;font-size:22px;font-weight:900;letter-spacing:-.04em;white-space:nowrap}
    .brand-mark{width:38px;height:38px;border-radius:13px;background:var(--navy);display:grid;place-items:center;color:#fff;font-size:18px;box-shadow:0 8px 18px rgba(18,37,66,.2)}
    .nav{display:flex;align-items:center;gap:5px}
    .nav a{padding:10px 13px;border-radius:10px;color:var(--ink-soft);font-size:14px;font-weight:700;white-space:nowrap}
    .nav a:hover,.nav a.active{background:#eef5ff;color:var(--blue)}
    .nav-cta{display:flex;align-items:center;gap:12px}
    .nav-note{color:var(--muted);font-size:13px}
    .menu-toggle{display:none;background:transparent;color:var(--navy);font-size:25px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border:1px solid rgba(45,108,223,.2);border-radius:999px;color:var(--blue);background:#eef5ff;font-size:13px;font-weight:700;letter-spacing:.04em}
    .eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 21px;border-radius:12px;font-weight:800;font-size:15px;transition:var(--ease);border:1px solid transparent}
    .btn-primary{background:var(--cyan);color:#082d4a;box-shadow:0 10px 22px rgba(53,200,214,.22)}
    .btn-primary:hover{background:#6de4e8;transform:translateY(-2px)}
    .btn-dark{background:var(--navy);color:#fff}
    .btn-dark:hover{background:var(--blue-dark);transform:translateY(-2px)}
    .btn-outline{border-color:var(--line);color:var(--navy);background:#fff}
    .btn-outline:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-2px)}
    .subhero{padding:86px 0 80px;color:#fff;background:linear-gradient(110deg,rgba(11,31,62,.96),rgba(18,50,91,.8)),url("/assets/images/backpic/back-2.webp") center/cover;position:relative;overflow:hidden}
    .subhero:after{content:"";position:absolute;width:470px;height:470px;border:1px solid rgba(255,255,255,.13);border-radius:50%;right:-120px;top:-230px}
    .subhero-grid{display:grid;grid-template-columns:1fr .8fr;gap:70px;align-items:center;position:relative;z-index:1}
    .subhero h1{font-size:clamp(40px,5vw,68px);line-height:1.12;letter-spacing:-.06em;margin:20px 0}
    .subhero h1 span{color:#77e4e7}
    .subhero p{max-width:650px;color:rgba(255,255,255,.78);font-size:18px;line-height:1.95}
    .hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
    .login-panel{background:#fff;color:var(--ink);padding:28px;border-radius:24px;box-shadow:var(--shadow-lg);transform:rotate(1.5deg)}
    .panel-top{display:flex;justify-content:space-between;align-items:center;padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:20px}
    .panel-top strong{font-size:18px}.status{font-size:12px;color:var(--green);background:#eaf8f1;padding:5px 9px;border-radius:999px}
    .login-row{display:flex;align-items:center;gap:13px;padding:15px 0;border-bottom:1px solid #edf1f6}
    .login-icon{width:36px;height:36px;border-radius:11px;background:#eef5ff;color:var(--blue);display:grid;place-items:center;font-weight:900}
    .login-row b{display:block;font-size:14px}.login-row small{color:var(--muted);font-size:12px}
    .panel-foot{display:flex;justify-content:space-between;align-items:center;margin-top:20px;font-size:12px;color:var(--muted)}
    .progress-nav{background:var(--navy);border-top:1px solid rgba(255,255,255,.12);border-bottom:1px solid rgba(255,255,255,.1)}
    .progress-list{display:grid;grid-template-columns:repeat(4,1fr)}
    .progress-item{position:relative;padding:20px 18px 18px 46px;color:rgba(255,255,255,.58);font-size:13px;border-right:1px solid rgba(255,255,255,.1)}
    .progress-item:last-child{border-right:0}.progress-item b{display:block;color:#fff;font-size:14px;margin-bottom:3px}
    .progress-item em{position:absolute;left:17px;top:21px;width:20px;height:20px;border-radius:50%;border:1px solid rgba(255,255,255,.4);font-style:normal;text-align:center;line-height:18px;font-size:11px}
    .progress-item.active{background:rgba(53,200,214,.11)}.progress-item.active em{background:var(--cyan);color:var(--navy);border-color:var(--cyan)}
    .section{padding:96px 0;position:relative}.section-alt{background:#fff}
    .section-head{max-width:720px;margin-bottom:40px}.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
    .section-head h2{font-size:clamp(30px,4vw,48px);line-height:1.2;letter-spacing:-.04em;margin:16px 0}
    .section-head p{font-size:17px;color:var(--ink-soft);line-height:1.9}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
    .visual-card{border-radius:var(--radius-lg);overflow:hidden;background:#dfeaf5;box-shadow:var(--shadow-md);position:relative}
    .visual-card img{width:100%;height:390px;object-fit:cover}
    .visual-label{position:absolute;left:22px;bottom:20px;background:rgba(18,37,66,.9);color:#fff;padding:12px 16px;border-radius:12px;font-size:13px}
    .number-list{display:grid;gap:18px}.number-item{display:grid;grid-template-columns:44px 1fr;gap:15px;padding:18px 0;border-bottom:1px solid var(--line)}
    .number-item:last-child{border-bottom:0}.number{color:var(--blue);font-size:22px;font-weight:900}.number-item h3{font-size:19px;margin-bottom:5px}.number-item p{color:var(--ink-soft)}
    .feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:26px;box-shadow:var(--shadow-sm);transition:var(--ease)}
    .feature:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:#bcd2f2}.feature-icon{font-size:26px;color:var(--blue);margin-bottom:15px}.feature h3{font-size:19px;margin-bottom:8px}.feature p{font-size:14px;color:var(--ink-soft)}
    .notice{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:stretch}.notice-main{padding:34px;border-radius:var(--radius-lg);background:#edf5ff;border:1px solid #d6e6fb}.notice-main h2{font-size:30px;line-height:1.3;margin:15px 0}.notice-main p{color:var(--ink-soft)}.notice-side{background:var(--navy);border-radius:var(--radius-lg);padding:30px;color:#fff}.notice-side h3{font-size:21px;margin-bottom:15px}.check-list{list-style:none;display:grid;gap:12px}.check-list li{display:flex;gap:10px;color:rgba(255,255,255,.78);font-size:14px}.check-list li:before{content:"✓";color:var(--cyan);font-weight:900}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;background:#fff}.step{padding:25px;border-right:1px solid var(--line);min-height:170px}.step:last-child{border-right:0}.step-num{color:var(--blue);font-weight:900;font-size:13px}.step h3{font-size:18px;margin:12px 0 8px}.step p{font-size:14px;color:var(--ink-soft)}
    .security-box{display:flex;gap:25px;align-items:center;background:var(--navy);border-radius:var(--radius-lg);padding:34px;color:#fff}.shield{width:72px;height:72px;flex:0 0 72px;border:1px solid rgba(119,228,231,.45);border-radius:22px;display:grid;place-items:center;color:var(--cyan);font-size:31px}.security-box h2{font-size:28px;margin-bottom:6px}.security-box p{color:rgba(255,255,255,.72)}
    .faq-list{max-width:850px;margin:auto;display:grid;gap:12px}.faq{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}.faq button{width:100%;display:flex;justify-content:space-between;text-align:left;padding:19px 22px;background:#fff;color:var(--ink);font-weight:800}.faq button span:last-child{color:var(--blue);font-size:22px;line-height:1}.faq-answer{display:none;padding:0 22px 19px;color:var(--ink-soft);font-size:14px}.faq.open .faq-answer{display:block}.faq.open button{color:var(--blue)}
    .cta{padding:76px 0;background:linear-gradient(115deg,#122542,#1d477e);color:#fff}.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}.cta h2{font-size:clamp(28px,4vw,44px);line-height:1.25;margin:13px 0}.cta p{color:rgba(255,255,255,.72);max-width:650px}.footer{background:#0d1c32;color:#fff;padding:66px 0 22px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}.footer-brand p{color:rgba(255,255,255,.58);font-size:13px;max-width:290px;margin-top:18px}.footer h3{font-size:15px;margin-bottom:15px}.footer ul{list-style:none;display:grid;gap:8px}.footer li,.footer a{color:rgba(255,255,255,.58);font-size:13px}.footer a:hover{color:var(--cyan)}.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);padding-top:20px;margin-top:50px;color:rgba(255,255,255,.48);font-size:12px}.footer-links{display:flex;gap:18px}
    :focus-visible{outline:3px solid rgba(53,200,214,.65);outline-offset:3px}
    @media(max-width:1024px){.nav{gap:0}.nav a{padding:9px 8px;font-size:13px}.subhero-grid{gap:35px}.feature-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.container{width:min(var(--container),calc(100% - 34px))}.nav{display:none;position:absolute;left:17px;right:17px;top:70px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-md);flex-direction:column;align-items:stretch}.nav.show{display:flex}.nav a{padding:12px 14px}.nav-cta{display:none}.menu-toggle{display:block}.nav-wrap{height:70px}.subhero{padding:65px 0}.subhero-grid,.split,.notice{grid-template-columns:1fr;gap:35px}.login-panel{max-width:560px}.progress-list{grid-template-columns:repeat(2,1fr)}.progress-item:nth-child(2){border-right:0}.section{padding:72px 0}.steps{grid-template-columns:repeat(2,1fr)}.step:nth-child(2){border-right:0}.step:nth-child(-n+2){border-bottom:1px solid var(--line)}.cta-inner{display:block}.cta .btn{margin-top:25px}}
    @media(max-width:520px){.subhero h1{font-size:40px}.subhero p{font-size:16px}.hero-actions .btn{width:100%}.feature-grid,.steps,.footer-grid{grid-template-columns:1fr}.step{border-right:0;border-bottom:1px solid var(--line)!important}.step:last-child{border-bottom:0!important}.security-box{display:block;padding:25px}.shield{margin-bottom:18px}.footer-bottom{display:block}.footer-bottom>span{display:block;margin-bottom:9px}.footer-links{margin-top:15px}.visual-card img{height:280px}}

/* roulang page: category4 */
:root{
      --ink:#14233b;
      --ink-soft:#53627a;
      --muted:#8793a6;
      --line:#dfe6ef;
      --paper:#f6f8fb;
      --white:#ffffff;
      --navy:#122542;
      --blue:#2d6cdf;
      --blue-dark:#1f51b1;
      --cyan:#35c8d6;
      --gold:#f2b84b;
      --green:#39a979;
      --danger:#e56a67;
      --radius-sm:10px;
      --radius-md:18px;
      --radius-lg:28px;
      --shadow-sm:0 8px 24px rgba(24,47,83,.07);
      --shadow-md:0 18px 50px rgba(24,47,83,.12);
      --shadow-lg:0 28px 80px rgba(15,40,80,.2);
      --container:1200px;
      --ease:all .28s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;background:var(--paper);color:var(--ink);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      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{font:inherit}
    button{cursor:pointer;border:0}
    ul{padding:0;margin:0;list-style:none}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .header{
      position:sticky;top:0;z-index:30;background:rgba(255,255,255,.92);
      backdrop-filter:blur(18px);border-bottom:1px solid rgba(223,230,239,.8)
    }
    .nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:12px;font-size:22px;font-weight:900;letter-spacing:-.04em;white-space:nowrap}
    .brand-mark{
      width:38px;height:38px;border-radius:13px;background:var(--navy);
      display:grid;place-items:center;color:#fff;font-size:18px;
      box-shadow:0 8px 18px rgba(18,37,66,.2)
    }
    .nav{display:flex;align-items:center;gap:5px}
    .nav a{
      padding:10px 13px;border-radius:10px;color:var(--ink-soft);
      font-size:14px;font-weight:700;white-space:nowrap
    }
    .nav a:hover,.nav a.active{background:#eef5ff;color:var(--blue)}
    .nav-cta{display:flex;align-items:center;gap:12px}
    .nav-note{color:var(--muted);font-size:13px}
    .menu-toggle{display:none;background:transparent;color:var(--navy);font-size:25px}
    .hero{
      min-height:560px;padding:82px 0 72px;overflow:hidden;color:#fff;position:relative;
      background:
      linear-gradient(110deg,rgba(11,31,62,.96),rgba(18,50,91,.8) 55%,rgba(18,50,91,.58)),
      url("/assets/images/backpic/back-2.webp") center/cover no-repeat
    }
    .hero:after{
      content:"";position:absolute;width:560px;height:560px;border:1px solid rgba(255,255,255,.12);
      border-radius:50%;right:-160px;top:-150px
    }
    .hero-grid{display:grid;grid-template-columns:1fr .9fr;align-items:center;gap:64px;position:relative;z-index:1}
    .hero-copy{max-width:650px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;padding:6px 12px;
      border:1px solid rgba(45,108,223,.2);border-radius:999px;color:var(--blue);
      background:#eef5ff;font-size:13px;font-weight:700;letter-spacing:.04em
    }
    .eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan)}
    .hero .eyebrow{color:#bdebf1;background:rgba(53,200,214,.12);border-color:rgba(150,239,245,.25)}
    .hero h1{font-size:clamp(40px,5.2vw,70px);line-height:1.1;letter-spacing:-.065em;margin:22px 0 18px}
    .hero h1 span{color:#77e4e7}
    .hero-desc{color:rgba(255,255,255,.8);font-size:18px;line-height:1.95;max-width:620px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 22px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;
      padding:13px 21px;border-radius:12px;font-weight:800;font-size:15px;
      transition:var(--ease);border:1px solid transparent
    }
    .btn-primary{background:var(--cyan);color:#082d4a;box-shadow:0 10px 22px rgba(53,200,214,.22)}
    .btn-primary:hover{background:#6de4e8;transform:translateY(-2px);box-shadow:0 14px 28px rgba(53,200,214,.32)}
    .btn-light{background:#fff;color:var(--navy)}
    .btn-light:hover{background:#eafaff;transform:translateY(-2px)}
    .btn-outline{border-color:rgba(255,255,255,.32);color:#fff;background:rgba(255,255,255,.05)}
    .btn-outline:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.6)}
    .hero-points{display:flex;gap:22px;flex-wrap:wrap;color:rgba(255,255,255,.72);font-size:13px}
    .hero-points span{display:flex;align-items:center;gap:7px}
    .hero-points i{width:8px;height:8px;border-radius:50%;background:var(--gold)}
    .update-panel{
      background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);
      border-radius:24px;padding:24px;box-shadow:var(--shadow-lg);backdrop-filter:blur(12px)
    }
    .panel-top{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-bottom:20px}
    .panel-top strong{font-size:18px}
    .status{padding:6px 10px;border-radius:99px;background:rgba(57,169,121,.18);color:#a7f0cf;font-size:12px;font-weight:800}
    .version-number{font-size:56px;line-height:1;font-weight:900;letter-spacing:-.06em;margin:18px 0 10px}
    .version-meta{color:rgba(255,255,255,.68);font-size:14px}
    .panel-list{margin:25px 0 22px;border-top:1px solid rgba(255,255,255,.15)}
    .panel-list li{display:flex;align-items:center;gap:10px;padding:13px 0;border-bottom:1px solid rgba(255,255,255,.12);font-size:14px;color:rgba(255,255,255,.82)}
    .panel-list b{color:#7ce5e7;font-size:18px}
    .countdown{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:18px}
    .countdown div{padding:11px 8px;border-radius:12px;text-align:center;background:rgba(4,22,47,.3)}
    .countdown strong{display:block;font-size:22px;color:#fff;line-height:1.2}
    .countdown span{font-size:11px;color:rgba(255,255,255,.55)}
    .progress-nav{background:var(--navy);border-top:1px solid rgba(255,255,255,.12);border-bottom:1px solid rgba(255,255,255,.1)}
    .progress-list{display:grid;grid-template-columns:repeat(4,1fr)}
    .progress-item{position:relative;padding:20px 18px 18px 46px;color:rgba(255,255,255,.58);font-size:13px;border-right:1px solid rgba(255,255,255,.1)}
    .progress-item:last-child{border-right:0}
    .progress-item b{display:block;color:#fff;font-size:14px;margin-bottom:3px}
    .progress-item em{position:absolute;left:17px;top:21px;width:20px;height:20px;border-radius:50%;border:1px solid rgba(255,255,255,.4);font-style:normal;text-align:center;line-height:18px;font-size:11px}
    .progress-item.active{background:rgba(53,200,214,.11)}
    .progress-item.active em{background:var(--cyan);color:var(--navy);border-color:var(--cyan)}
    .section{padding:100px 0;position:relative}
    .section-head{max-width:720px;margin-bottom:42px}
    .section-head.center{margin-left:auto;margin-right:auto;text-align:center}
    .section-head h2{font-size:clamp(30px,4vw,48px);line-height:1.2;letter-spacing:-.04em;margin:16px 0}
    .section-head p{font-size:17px;color:var(--ink-soft);line-height:1.9}
    .intro-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:58px;align-items:center}
    .intro-copy p{color:var(--ink-soft);font-size:17px;line-height:2}
    .image-card{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);position:relative}
    .image-card img{width:100%;height:360px;object-fit:cover}
    .image-label{position:absolute;left:22px;bottom:20px;padding:11px 15px;border-radius:12px;background:rgba(18,37,66,.84);color:#fff;font-size:13px}
    .feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .feature-card{padding:26px;border:1px solid var(--line);background:#fff;border-radius:var(--radius-md);box-shadow:var(--shadow-sm);transition:var(--ease)}
    .feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:#bfd5f5}
    .feature-icon{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:#eef5ff;color:var(--blue);font-size:21px;font-weight:900;margin-bottom:19px}
    .feature-card h3{margin:0 0 9px;font-size:19px}
    .feature-card p{margin:0;color:var(--ink-soft);font-size:14px;line-height:1.8}
    .dark-section{background:var(--navy);color:#fff}
    .dark-section .section-head p{color:rgba(255,255,255,.66)}
    .release-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:start}
    .release-highlight{padding:30px;border-radius:var(--radius-lg);background:linear-gradient(145deg,#1b416f,#122542);border:1px solid rgba(255,255,255,.13)}
    .release-highlight .eyebrow{background:rgba(53,200,214,.1);color:#8ce9eb;border-color:rgba(53,200,214,.25)}
    .release-highlight h3{font-size:30px;line-height:1.25;margin:20px 0 12px}
    .release-highlight p{color:rgba(255,255,255,.68);font-size:15px}
    .release-date{color:#77e4e7;font-weight:800;font-size:14px}
    .timeline{position:relative;padding-left:30px}
    .timeline:before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;background:rgba(255,255,255,.16)}
    .timeline-item{position:relative;padding:0 0 32px 25px}
    .timeline-item:last-child{padding-bottom:0}
    .timeline-item:before{content:"";position:absolute;left:-1px;top:7px;width:14px;height:14px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 6px rgba(53,200,214,.13)}
    .timeline-item time{font-size:13px;color:#77e4e7;font-weight:800}
    .timeline-item h3{font-size:20px;margin:6px 0;color:#fff}
    .timeline-item p{margin:0;color:rgba(255,255,255,.65);font-size:14px;line-height:1.85}
    .split-band{display:grid;grid-template-columns:1fr 1fr;gap:22px}
    .info-box{padding:30px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md)}
    .info-box h3{margin:0 0 13px;font-size:22px}
    .info-box p{color:var(--ink-soft);font-size:15px}
    .check-list li{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);color:var(--ink-soft);font-size:15px}
    .check-list li:last-child{border-bottom:0}
    .check-list b{color:var(--green);font-size:18px}
    .compat-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
    .compat-table{border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;background:#fff;box-shadow:var(--shadow-sm)}
    .compat-row{display:grid;grid-template-columns:1fr 1fr 1fr;padding:16px 20px;border-bottom:1px solid var(--line);font-size:14px}
    .compat-row:last-child{border-bottom:0}
    .compat-row.head{background:#eef5ff;color:var(--navy);font-weight:900}
    .compat-row span:not(:first-child){text-align:right;color:var(--ink-soft)}
    .note-card{padding:28px;border-radius:var(--radius-lg);background:#eafaff;border:1px solid #c9eef1}
    .note-card h3{margin:0 0 11px;color:var(--navy);font-size:24px}
    .note-card p{color:var(--ink-soft);font-size:15px;margin:0 0 18px}
    .step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{padding:24px 20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);position:relative}
    .step-number{color:var(--blue);font-size:13px;font-weight:900;letter-spacing:.1em}
    .step h3{font-size:18px;margin:13px 0 8px}
    .step p{margin:0;color:var(--ink-soft);font-size:14px;line-height:1.8}
    .case-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:22px}
    .case-feature{min-height:360px;padding:32px;border-radius:var(--radius-lg);color:#fff;display:flex;flex-direction:column;justify-content:flex-end;background:linear-gradient(0deg,rgba(18,37,66,.92),rgba(18,37,66,.1)),url("/assets/images/coverpic/cover-8.webp") center/cover}
    .case-feature h3{font-size:28px;line-height:1.3;margin:12px 0 7px}
    .case-feature p{color:rgba(255,255,255,.74);margin:0;font-size:14px}
    .case-side{display:grid;gap:18px}
    .case-item{display:grid;grid-template-columns:120px 1fr;gap:18px;background:#fff;padding:18px;border:1px solid var(--line);border-radius:var(--radius-md)}
    .case-item img{width:120px;height:110px;object-fit:cover;border-radius:12px}
    .case-item h3{margin:4px 0 5px;font-size:18px}
    .case-item p{margin:0;color:var(--ink-soft);font-size:14px;line-height:1.7}
    .faq-list{max-width:900px;margin:0 auto}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden}
    .faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;background:#fff;color:var(--ink);text-align:left;padding:19px 22px;font-weight:800}
    .faq-question span{font-size:22px;color:var(--blue);transition:var(--ease)}
    .faq-answer{display:none;padding:0 22px 20px;color:var(--ink-soft);font-size:15px;line-height:1.9}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span{transform:rotate(45deg)}
    .cta{
      padding:72px 0;background:linear-gradient(110deg,#122542,#1d4a78);color:#fff
    }
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:35px}
    .cta h2{font-size:clamp(28px,4vw,44px);line-height:1.2;margin:0 0 12px}
    .cta p{margin:0;color:rgba(255,255,255,.7);max-width:650px}
    .footer{background:#0d1b30;color:#fff;padding:68px 0 0}
    .footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:45px}
    .footer .brand{color:#fff;margin-bottom:17px}
    .footer-brand p{color:rgba(255,255,255,.57);font-size:14px;line-height:1.9;max-width:300px}
    .footer h3{font-size:15px;margin:4px 0 15px;color:#fff}
    .footer li{margin:9px 0;color:rgba(255,255,255,.57);font-size:13px}
    .footer li a:hover{color:var(--cyan)}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px;color:rgba(255,255,255,.5);font-size:12px;flex-wrap:wrap}
    .footer-links{display:flex;gap:18px}
    .footer-links a:hover{color:var(--cyan)}
    :focus-visible{outline:3px solid rgba(53,200,214,.65);outline-offset:3px}
    @media(max-width:1024px){
      .nav-wrap{gap:12px}.nav a{padding:9px 8px;font-size:13px}.nav-note{display:none}
      .hero-grid,.intro-layout,.release-layout,.compat-layout{grid-template-columns:1fr;gap:38px}
      .hero{min-height:auto}.hero-copy{max-width:760px}
      .feature-grid{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 34px))}
      .nav-wrap{height:70px}.menu-toggle{display:block}
      .nav{display:none;position:absolute;left:17px;right:17px;top:78px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow-md);flex-direction:column;align-items:stretch}
      .nav.open{display:flex}.nav a{display:block;padding:12px 14px}
      .nav-cta{display:none}
      .hero{padding:62px 0 55px}.hero h1{font-size:clamp(38px,11vw,58px)}
      .hero-desc{font-size:16px}.stage{min-height:0}
      .progress-list{grid-template-columns:repeat(2,1fr)}
      .progress-item:nth-child(2){border-right:0}.progress-item:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.1)}
      .section{padding:74px 0}.section-head{margin-bottom:30px}
      .feature-grid,.step-grid{grid-template-columns:1fr 1fr}
      .split-band,.case-layout{grid-template-columns:1fr}
      .cta-inner{display:block}.cta .btn{margin-top:24px}
    }
    @media(max-width:520px){
      .hero-actions{flex-direction:column;align-items:stretch}.hero-actions .btn{width:100%}
      .hero-points{gap:10px;display:grid}
      .update-panel{padding:20px}.version-number{font-size:48px}
      .feature-grid,.step-grid{grid-template-columns:1fr}
      .progress-item{padding-left:39px;padding-right:10px}
      .progress-item em{left:12px}
      .compat-row{grid-template-columns:1fr 1fr;padding:13px 14px}
      .compat-row span:last-child{display:none}
      .case-item{grid-template-columns:90px 1fr;gap:13px}.case-item img{width:90px;height:96px}
      .footer-grid{grid-template-columns:1fr;gap:26px}
      .footer-bottom{padding:20px 0;display:block}.footer-bottom>span{display:block;margin-bottom:9px}
    }

/* roulang page: category1 */
:root{
      --ink:#14233b;
      --ink-soft:#53627a;
      --muted:#8793a6;
      --line:#dfe6ef;
      --paper:#f6f8fb;
      --white:#ffffff;
      --navy:#122542;
      --blue:#2d6cdf;
      --blue-dark:#1f51b1;
      --cyan:#35c8d6;
      --gold:#f2b84b;
      --green:#39a979;
      --danger:#e56a67;
      --radius-sm:10px;
      --radius-md:18px;
      --radius-lg:28px;
      --shadow-sm:0 8px 24px rgba(24,47,83,.07);
      --shadow-md:0 18px 50px rgba(24,47,83,.12);
      --shadow-lg:0 28px 80px rgba(15,40,80,.2);
      --container:1200px;
      --ease:all .28s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:var(--paper);
      color:var(--ink);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      line-height:1.75;
      font-size:16px;
      overflow-x:hidden;
    }
    h1,h2,h3,h4,p{margin-top:0}
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:6px 12px;border:1px solid rgba(45,108,223,.2);
      border-radius:999px;color:var(--blue);background:#eef5ff;
      font-size:13px;font-weight:700;letter-spacing:.04em
    }
    .eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan)}
    .section{padding:104px 0;position:relative}
    .section-head{max-width:720px;margin-bottom:42px}
    .section-head.center{margin-left:auto;margin-right:auto;text-align:center}
    .section-head h2{font-size:clamp(30px,4vw,48px);line-height:1.2;letter-spacing:-.04em;margin:16px 0}
    .section-head p{font-size:17px;color:var(--ink-soft);line-height:1.9}
    .header{
      position:sticky;top:0;z-index:30;background:rgba(255,255,255,.9);
      backdrop-filter:blur(18px);border-bottom:1px solid rgba(223,230,239,.8)
    }
    .nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:12px;font-size:22px;font-weight:900;letter-spacing:-.04em;white-space:nowrap}
    .brand-mark{
      width:38px;height:38px;border-radius:13px;background:var(--navy);
      display:grid;place-items:center;color:#fff;font-size:18px;box-shadow:0 8px 18px rgba(18,37,66,.2)
    }
    .nav{display:flex;align-items:center;gap:5px}
    .nav a{padding:10px 13px;border-radius:10px;color:var(--ink-soft);font-size:14px;font-weight:700;white-space:nowrap}
    .nav a:hover,.nav a.active{background:#eef5ff;color:var(--blue)}
    .nav-cta{display:flex;align-items:center;gap:12px}
    .nav-note{color:var(--muted);font-size:13px}
    .menu-toggle{display:none;background:transparent;color:var(--navy);font-size:25px}
    .hero{
      min-height:650px;padding:82px 0 72px;overflow:hidden;
      background:
      linear-gradient(110deg,rgba(11,31,62,.95),rgba(18,50,91,.78) 55%,rgba(18,50,91,.56)),
      url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
      color:#fff;position:relative
    }
    .hero:after{content:"";position:absolute;width:560px;height:560px;border:1px solid rgba(255,255,255,.12);border-radius:50%;right:-160px;top:-150px}
    .hero-grid{display:grid;grid-template-columns:.9fr 1.1fr;align-items:center;gap:60px;position:relative;z-index:1}
    .hero-copy{max-width:570px}
    .hero .eyebrow{color:#bdebf1;background:rgba(53,200,214,.12);border-color:rgba(150,239,245,.25)}
    .hero h1{font-size:clamp(40px,5.2vw,72px);line-height:1.1;letter-spacing:-.065em;margin:22px 0}
    .hero h1 span{color:#77e4e7}
    .hero-desc{color:rgba(255,255,255,.78);font-size:18px;line-height:1.95;max-width:560px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 28px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;
      padding:13px 21px;border-radius:12px;font-weight:800;font-size:15px;
      transition:var(--ease);border:1px solid transparent
    }
    .btn-primary{background:var(--cyan);color:#082d4a;box-shadow:0 10px 22px rgba(53,200,214,.22)}
    .btn-primary:hover{background:#6de4e8;transform:translateY(-2px);box-shadow:0 14px 28px rgba(53,200,214,.32)}
    .btn-light{background:#fff;color:var(--navy)}
    .btn-light:hover{background:#eafaff;transform:translateY(-2px)}
    .btn-outline{border-color:rgba(255,255,255,.32);color:#fff;background:rgba(255,255,255,.05)}
    .btn-outline:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.6)}
    .hero-points{display:flex;gap:22px;flex-wrap:wrap;color:rgba(255,255,255,.72);font-size:13px}
    .hero-points span{display:flex;align-items:center;gap:7px}
    .hero-points i{width:8px;height:8px;border-radius:50%;background:var(--gold)}
    .stage{position:relative;min-height:420px;display:flex;align-items:center;justify-content:center}
    .stage-frame{
      width:min(620px,100%);padding:13px;border-radius:24px;background:rgba(255,255,255,.16);
      border:1px solid rgba(255,255,255,.25);box-shadow:var(--shadow-lg);transform:rotate(2deg)
    }
    .stage-screen{overflow:hidden;border-radius:16px;background:#edf3f9;position:relative}
    .stage-screen img{width:100%;height:360px;object-fit:cover}
    .video-shade{position:absolute;inset:0;background:linear-gradient(135deg,rgba(9,29,60,.15),rgba(9,29,60,.6))}
    .play-button{
      position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
      width:76px;height:76px;border-radius:50%;background:var(--cyan);color:var(--navy);
      font-size:28px;box-shadow:0 0 0 12px rgba(53,200,214,.2);transition:var(--ease)
    }
    .play-button:hover{transform:translate(-50%,-50%) scale(1.08);background:#8af1ef}
    .screen-brand{position:absolute;left:18px;top:18px;color:var(--navy);font-weight:900;background:rgba(255,255,255,.86);padding:7px 11px;border-radius:8px;font-size:12px}
    .stage-card{position:absolute;background:#fff;color:var(--ink);padding:17px 19px;border-radius:16px;box-shadow:0 18px 38px rgba(0,0,0,.2);font-size:13px}
    .stage-card strong{display:block;font-size:23px;line-height:1.2;margin-top:4px}
    .stage-card small{color:var(--muted)}
    .stage-card.one{left:0;bottom:20px}
    .stage-card.two{right:0;top:38px}
    .progress-nav{background:var(--navy);border-top:1px solid rgba(255,255,255,.12);border-bottom:1px solid rgba(255,255,255,.1)}
    .progress-list{display:grid;grid-template-columns:repeat(4,1fr)}
    .progress-item{position:relative;padding:20px 18px 18px 46px;color:rgba(255,255,255,.58);font-size:13px;border-right:1px solid rgba(255,255,255,.1)}
    .progress-item:last-child{border-right:0}
    .progress-item b{display:block;color:#fff;font-size:14px;margin-bottom:3px}
    .progress-item em{position:absolute;left:17px;top:21px;width:20px;height:20px;border-radius:50%;border:1px solid rgba(255,255,255,.4);font-style:normal;text-align:center;line-height:18px;font-size:11px}
    .progress-item.active{background:rgba(53,200,214,.11)}
    .progress-item.active em{background:var(--cyan);color:var(--navy);border-color:var(--cyan)}
    .light-section{background:#fff}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:74px;align-items:center}
    .split.reverse .split-media{order:2}
    .split-media{position:relative}
    .split-media img{width:100%;height:410px;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}
    .media-label{position:absolute;left:22px;bottom:22px;background:rgba(18,37,66,.9);color:#fff;border-radius:13px;padding:12px 16px;font-size:13px}
    .split-copy h2{font-size:clamp(30px,4vw,46px);line-height:1.25;letter-spacing:-.045em;margin:16px 0}
    .split-copy p{color:var(--ink-soft);font-size:17px;line-height:1.95}
    .check-list{list-style:none;padding:0;margin:26px 0 0}
    .check-list li{display:flex;gap:12px;align-items:flex-start;margin:13px 0;color:var(--ink-soft)}
    .check-list li:before{content:"✓";width:23px;height:23px;flex:0 0 23px;border-radius:50%;display:grid;place-items:center;background:#e8f8f2;color:var(--green);font-weight:900;margin-top:3px}
    .feature-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:55px;align-items:start}
    .feature-intro{position:sticky;top:115px}
    .feature-intro h2{font-size:42px;line-height:1.25;margin:15px 0}
    .feature-intro p{color:var(--ink-soft);line-height:1.95}
    .feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .feature-card,.scenario-card,.trust-card,.faq-item{
      background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);transition:var(--ease)
    }
    .feature-card{padding:26px}
    .feature-card:hover,.scenario-card:hover,.trust-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:#b9d0f6}
    .icon-box{width:46px;height:46px;border-radius:14px;background:#eef5ff;color:var(--blue);display:grid;place-items:center;font-size:22px;margin-bottom:20px}
    .feature-card h3{margin:0 0 9px;font-size:19px}
    .feature-card p{margin:0;color:var(--ink-soft);font-size:14px;line-height:1.8}
    .dark-section{background:var(--navy);color:#fff}
    .dark-section .section-head p{color:rgba(255,255,255,.68)}
    .dark-section .eyebrow{background:rgba(53,200,214,.1);color:#8be7e8;border-color:rgba(53,200,214,.25)}
    .scenario-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:24px}
    .scenario-card{overflow:hidden;background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.12);box-shadow:none;color:#fff}
    .scenario-card:hover{background:rgba(255,255,255,.11);border-color:rgba(119,228,231,.4)}
    .scenario-card.large{grid-row:span 2}
    .scenario-card img{width:100%;height:210px;object-fit:cover}
    .scenario-card.large img{height:300px}
    .scenario-body{padding:23px}
    .scenario-body h3{margin:0 0 9px;font-size:21px}
    .scenario-body p{margin:0;color:rgba(255,255,255,.68);font-size:14px;line-height:1.85}
    .number-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .step{padding:28px 25px 28px 0;margin-right:25px;border-right:1px solid var(--line);position:relative}
    .step:last-child{border-right:0;margin-right:0}
    .step-no{color:var(--blue);font-size:13px;font-weight:900;letter-spacing:.1em}
    .step h3{font-size:20px;margin:13px 0 8px}
    .step p{font-size:14px;color:var(--ink-soft);line-height:1.8;margin:0}
    .trust-area{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
    .quote-box{background:#edf5ff;border-radius:var(--radius-lg);padding:38px 42px;position:relative}
    .quote-box:before{content:"“";position:absolute;right:28px;top:-15px;font-size:100px;line-height:1;color:#c7ddff;font-family:Georgia}
    .quote-box p{font-size:22px;line-height:1.7;font-weight:800;margin-bottom:22px}
    .quote-box span{font-size:14px;color:var(--ink-soft)}
    .metric-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .metric{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px}
    .metric strong{display:block;font-size:34px;line-height:1.2;color:var(--blue)}
    .metric span{font-size:13px;color:var(--ink-soft)}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
    .faq-item{padding:22px 25px}
    .faq-item summary{cursor:pointer;font-weight:800;list-style:none;position:relative;padding-right:30px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";position:absolute;right:0;color:var(--blue);font-size:22px;line-height:1}
    .faq-item[open] summary:after{content:"−"}
    .faq-item p{color:var(--ink-soft);font-size:14px;line-height:1.85;margin:15px 0 0;padding-top:15px;border-top:1px solid var(--line)}
    .cta{
      background:linear-gradient(120deg,#eafaff,#eef5ff);border:1px solid #d5e8fb;
      border-radius:var(--radius-lg);padding:56px 64px;display:flex;align-items:center;justify-content:space-between;gap:35px
    }
    .cta h2{font-size:38px;line-height:1.3;margin:0 0 12px}
    .cta p{margin:0;color:var(--ink-soft);max-width:680px}
    .cta .btn-primary{white-space:nowrap}
    .footer{background:#0d1c32;color:#fff;padding:70px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:42px}
    .footer .brand{color:#fff;margin-bottom:18px}
    .footer-brand p{color:rgba(255,255,255,.58);font-size:14px;line-height:1.9;max-width:290px}
    .footer h3{font-size:15px;margin:5px 0 16px;color:#fff}
    .footer ul{list-style:none;padding:0;margin:0}
    .footer li{margin:9px 0;color:rgba(255,255,255,.55);font-size:13px}
    .footer li a{color:rgba(255,255,255,.63)}
    .footer li a:hover{color:var(--cyan)}
    .footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);margin-top:54px;padding-top:22px;color:rgba(255,255,255,.45);font-size:12px}
    .footer-links{display:flex;gap:18px}
    .footer-links a:hover{color:#fff}
    .modal{display:none;position:fixed;inset:0;background:rgba(6,17,34,.78);z-index:80;align-items:center;justify-content:center;padding:20px}
    .modal.show{display:flex}
    .modal-card{width:min(650px,100%);background:#fff;border-radius:22px;padding:35px;color:var(--ink);box-shadow:var(--shadow-lg)}
    .modal-card h3{font-size:27px;margin:0 0 12px}
    .modal-card p{color:var(--ink-soft);line-height:1.9}
    .modal-close{float:right;background:#eef5ff;color:var(--blue);border-radius:50%;width:34px;height:34px;font-size:20px}
    :focus-visible{outline:3px solid rgba(53,200,214,.65);outline-offset:3px}
    @media(max-width:1024px){
      .nav{gap:0}
      .nav a{padding:9px 8px;font-size:13px}
      .nav-note{display:none}
      .hero-grid,.feature-layout,.trust-area{gap:35px}
      .number-steps{grid-template-columns:repeat(2,1fr);gap:0}
      .step:nth-child(2){border-right:0}
      .step:nth-child(-n+2){border-bottom:1px solid var(--line)}
      .footer-grid{grid-template-columns:1.3fr 1fr 1fr}
      .footer-grid>div:last-child{grid-column:span 3}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 34px))}
      .nav-wrap{height:70px}
      .menu-toggle{display:block}
      .nav{display:none;position:absolute;left:17px;right:17px;top:70px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-md);flex-direction:column;align-items:stretch}
      .nav.open{display:flex}
      .nav a{padding:13px 15px}
      .hero{min-height:auto;padding:65px 0 55px}
      .hero-grid,.split,.feature-layout,.scenario-wrap,.trust-area{grid-template-columns:1fr}
      .stage{min-height:360px;margin-top:10px}
      .stage-card.one{left:4px}
      .stage-card.two{right:4px}
      .progress-list{grid-template-columns:repeat(2,1fr)}
      .progress-item:nth-child(2){border-right:0}
      .progress-item:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.1)}
      .section{padding:75px 0}
      .feature-intro{position:static}
      .split.reverse .split-media{order:0}
      .split-media img{height:330px}
      .scenario-card.large{grid-row:auto}
      .scenario-card.large img,.scenario-card img{height:240px}
      .number-steps{grid-template-columns:1fr}
      .step,.step:nth-child(2){border-right:0;border-bottom:1px solid var(--line)!important;margin:0;padding:24px 0}
      .step:last-child{border-bottom:0!important}
      .faq-grid{grid-template-columns:1fr}
      .cta{padding:36px 27px;display:block}
      .cta h2{font-size:30px}
      .cta .btn{margin-top:24px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
      .footer-grid>div:last-child{grid-column:span 2}
    }
    @media(max-width:520px){
      .hero h1{font-size:42px}
      .hero-desc{font-size:16px}
      .hero-actions .btn{width:100%}
      .hero-points{gap:10px;display:grid}
      .stage-frame{transform:none}
      .stage-screen img{height:270px}
      .stage-card{padding:12px;font-size:11px}
      .stage-card strong{font-size:18px}
      .feature-grid,.metric-list{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .footer-grid>div:last-child{grid-column:auto}
      .footer-bottom{display:block}
      .footer-bottom>span{display:block;margin-bottom:9px}
      .footer-links{margin-top:15px}
    }

/* roulang page: category5 */
:root{
      --ink:#14233b;
      --ink-soft:#53627a;
      --muted:#8793a6;
      --line:#dfe6ef;
      --paper:#f6f8fb;
      --white:#fff;
      --navy:#122542;
      --blue:#2d6cdf;
      --blue-dark:#1f51b1;
      --cyan:#35c8d6;
      --gold:#f2b84b;
      --green:#39a979;
      --danger:#e56a67;
      --radius-sm:10px;
      --radius-md:18px;
      --radius-lg:28px;
      --shadow-sm:0 8px 24px rgba(24,47,83,.07);
      --shadow-md:0 18px 50px rgba(24,47,83,.12);
      --shadow-lg:0 28px 80px rgba(15,40,80,.2);
      --container:1200px;
      --ease:all .28s ease;
    }
    *,*:before,*:after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:var(--paper);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      font-size:16px;
      line-height:1.75;
      overflow-x:hidden;
    }
    h1,h2,h3,h4,p,ul,ol{margin-top:0}
    h1,h2,h3,h4{line-height:1.25;letter-spacing:-.035em}
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .header{
      position:sticky;
      top:0;
      z-index:30;
      background:rgba(255,255,255,.92);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(223,230,239,.85);
    }
    .nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:26px}
    .brand{display:flex;align-items:center;gap:12px;font-size:22px;font-weight:900;letter-spacing:-.04em;white-space:nowrap}
    .brand-mark{
      width:38px;height:38px;border-radius:13px;background:var(--navy);
      display:grid;place-items:center;color:#fff;font-size:18px;
      box-shadow:0 8px 18px rgba(18,37,66,.2)
    }
    .nav{display:flex;align-items:center;gap:5px}
    .nav a{padding:10px 13px;border-radius:10px;color:var(--ink-soft);font-size:14px;font-weight:700;white-space:nowrap}
    .nav a:hover,.nav a.active{background:#eef5ff;color:var(--blue)}
    .nav-cta{display:flex;align-items:center;gap:12px}
    .nav-note{color:var(--muted);font-size:13px}
    .menu-toggle{display:none;background:transparent;color:var(--navy);font-size:25px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;padding:6px 12px;
      border:1px solid rgba(45,108,223,.2);border-radius:999px;
      color:var(--blue);background:#eef5ff;font-size:13px;font-weight:700;
      letter-spacing:.04em
    }
    .eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan)}
    .hero{
      position:relative;
      min-height:550px;
      display:flex;
      align-items:center;
      overflow:hidden;
      color:#fff;
      background:
        linear-gradient(105deg,rgba(9,27,55,.96),rgba(18,50,91,.83) 58%,rgba(18,50,91,.65)),
        url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
    }
    .hero:before{
      content:"";
      position:absolute;
      right:-130px;
      top:-210px;
      width:600px;
      height:600px;
      border:1px solid rgba(255,255,255,.13);
      border-radius:50%;
      box-shadow:0 0 0 65px rgba(255,255,255,.025),0 0 0 130px rgba(255,255,255,.018);
    }
    .hero-grid{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1fr .9fr;
      gap:72px;
      align-items:center;
      padding:86px 0;
    }
    .hero-copy{max-width:640px}
    .hero .eyebrow{color:#bdebf1;background:rgba(53,200,214,.12);border-color:rgba(150,239,245,.25)}
    .hero h1{font-size:clamp(42px,5.5vw,72px);margin:22px 0 20px;line-height:1.08}
    .hero h1 span{color:#77e4e7}
    .hero-desc{max-width:590px;color:rgba(255,255,255,.78);font-size:18px;line-height:1.95}
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 25px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;
      padding:13px 21px;border-radius:12px;font-size:15px;font-weight:800;
      border:1px solid transparent;transition:var(--ease)
    }
    .btn-primary{background:var(--cyan);color:#082d4a;box-shadow:0 10px 22px rgba(53,200,214,.22)}
    .btn-primary:hover{background:#6de4e8;transform:translateY(-2px);box-shadow:0 14px 28px rgba(53,200,214,.32)}
    .btn-light{background:#fff;color:var(--navy)}
    .btn-light:hover{background:#eafaff;transform:translateY(-2px)}
    .btn-outline{border-color:rgba(255,255,255,.32);color:#fff;background:rgba(255,255,255,.05)}
    .btn-outline:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.6)}
    .hero-points{display:flex;flex-wrap:wrap;gap:20px;color:rgba(255,255,255,.72);font-size:13px}
    .hero-points span{display:flex;align-items:center;gap:7px}
    .hero-points i{width:8px;height:8px;border-radius:50%;background:var(--gold)}
    .poster{
      position:relative;
      width:min(430px,100%);
      margin-left:auto;
      padding:13px;
      border-radius:25px;
      background:rgba(255,255,255,.16);
      border:1px solid rgba(255,255,255,.28);
      box-shadow:var(--shadow-lg);
      transform:rotate(2deg)
    }
    .poster-inner{position:relative;overflow:hidden;border-radius:17px;background:#dfeaf4}
    .poster-inner img{width:100%;height:340px;object-fit:cover}
    .poster-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,26,52,.08),rgba(8,26,52,.78))}
    .poster-copy{position:absolute;left:25px;right:25px;bottom:22px}
    .poster-copy small{color:#9de7eb;font-weight:700}
    .poster-copy h3{margin:6px 0;color:#fff;font-size:26px}
    .poster-copy p{margin:0;color:rgba(255,255,255,.76);font-size:13px}
    .hot-badge{
      position:absolute;top:20px;right:20px;padding:7px 11px;border-radius:999px;
      color:#47300b;background:var(--gold);font-size:12px;font-weight:900;
      box-shadow:0 8px 20px rgba(0,0,0,.18)
    }
    .progress-nav{background:var(--navy);border-top:1px solid rgba(255,255,255,.12);border-bottom:1px solid rgba(255,255,255,.1)}
    .progress-list{display:grid;grid-template-columns:repeat(4,1fr)}
    .progress-item{position:relative;padding:20px 18px 18px 52px;color:rgba(255,255,255,.58);font-size:13px;border-right:1px solid rgba(255,255,255,.1)}
    .progress-item:last-child{border-right:0}
    .progress-item b{display:block;color:#fff;font-size:14px;margin-bottom:3px}
    .progress-item em{position:absolute;left:18px;top:21px;width:21px;height:21px;border-radius:50%;border:1px solid rgba(255,255,255,.4);font-style:normal;text-align:center;line-height:19px;font-size:11px}
    .progress-item.active{background:rgba(53,200,214,.11)}
    .progress-item.active em{background:var(--cyan);color:var(--navy);border-color:var(--cyan)}
    .section{padding:100px 0;position:relative}
    .section-head{max-width:740px;margin-bottom:42px}
    .section-head h2{font-size:clamp(30px,4vw,48px);margin:16px 0}
    .section-head p{font-size:17px;color:var(--ink-soft);line-height:1.9}
    .section-head.center{text-align:center;margin-left:auto;margin-right:auto}
    .intro-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:72px;align-items:start}
    .intro-visual{position:relative}
    .intro-visual img{width:100%;height:420px;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}
    .floating-note{
      position:absolute;right:-25px;bottom:28px;max-width:220px;padding:18px 20px;
      border-radius:16px;background:#fff;box-shadow:var(--shadow-md);border:1px solid var(--line)
    }
    .floating-note strong{display:block;font-size:25px;color:var(--blue);line-height:1.2}
    .floating-note span{display:block;color:var(--muted);font-size:13px;margin-top:4px}
    .intro-text p{color:var(--ink-soft);font-size:17px;line-height:2}
    .quote-line{margin-top:28px;padding:19px 22px;border-left:4px solid var(--cyan);background:#edf9fb;border-radius:0 14px 14px 0;color:var(--navy);font-weight:700}
    .dark-section{background:var(--navy);color:#fff}
    .dark-section .section-head p{color:rgba(255,255,255,.7)}
    .release-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:54px;align-items:start}
    .timeline{position:relative;padding-left:30px}
    .timeline:before{content:"";position:absolute;left:5px;top:5px;bottom:5px;width:2px;background:rgba(119,228,231,.28)}
    .timeline-item{position:relative;padding:0 0 34px 28px}
    .timeline-item:last-child{padding-bottom:0}
    .timeline-item:before{content:"";position:absolute;left:-1px;top:8px;width:13px;height:13px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 6px rgba(53,200,214,.12)}
    .timeline-item time{color:#8fe8ea;font-size:13px;font-weight:800}
    .timeline-item h3{margin:7px 0 8px;font-size:22px}
    .timeline-item p{margin:0;color:rgba(255,255,255,.68);font-size:15px;line-height:1.85}
    .release-panel{padding:28px;border-radius:22px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15)}
    .release-panel h3{margin:0 0 18px;font-size:23px}
    .release-panel ul{list-style:none;padding:0;margin:0}
    .release-panel li{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.12);color:rgba(255,255,255,.74)}
    .release-panel li:last-child{border-bottom:0}
    .release-panel li b{color:var(--gold);min-width:64px;font-size:13px}
    .feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .feature-card{padding:28px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);transition:var(--ease)}
    .feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:#b9d1f5}
    .icon-box{width:48px;height:48px;display:grid;place-items:center;border-radius:15px;background:#eef5ff;color:var(--blue);font-weight:900;font-size:19px}
    .feature-card h3{margin:22px 0 10px;font-size:21px}
    .feature-card p{margin:0;color:var(--ink-soft);font-size:14px;line-height:1.85}
    .split-section{background:#edf3f9}
    .split-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;align-items:center}
    .split-copy h2{font-size:clamp(31px,4vw,47px);margin:15px 0 20px}
    .split-copy p{color:var(--ink-soft);font-size:17px;line-height:1.95}
    .check-list{list-style:none;padding:0;margin:25px 0 0}
    .check-list li{display:flex;gap:12px;padding:12px 0;color:var(--ink-soft);border-bottom:1px solid var(--line)}
    .check-list li:before{content:"✓";display:grid;place-items:center;flex:0 0 23px;height:23px;border-radius:50%;background:#d9f5ec;color:var(--green);font-weight:900}
    .image-card{position:relative;overflow:hidden;border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}
    .image-card img{width:100%;height:440px;object-fit:cover}
    .image-caption{position:absolute;left:20px;right:20px;bottom:20px;padding:18px 20px;border-radius:16px;background:rgba(18,37,66,.88);color:#fff}
    .image-caption strong{display:block;font-size:19px}
    .image-caption span{color:rgba(255,255,255,.7);font-size:13px}
    .scenario-wrap{display:grid;grid-template-columns:.72fr 1.28fr;gap:60px;align-items:start}
    .scenario-intro{position:sticky;top:115px}
    .scenario-intro h2{font-size:42px;margin:17px 0}
    .scenario-intro p{color:var(--ink-soft);line-height:1.95}
    .scenario-list{display:grid;gap:14px}
    .scenario-item{display:grid;grid-template-columns:55px 1fr auto;gap:18px;align-items:center;padding:22px 24px;background:#fff;border:1px solid var(--line);border-radius:16px;transition:var(--ease)}
    .scenario-item:hover{border-color:#b8cef0;box-shadow:var(--shadow-sm);transform:translateX(5px)}
    .scenario-number{font-size:27px;font-weight:900;color:var(--blue);opacity:.7}
    .scenario-item h3{margin:0 0 4px;font-size:18px}
    .scenario-item p{margin:0;color:var(--ink-soft);font-size:14px}
    .scenario-item span{color:var(--muted);font-size:22px}
    .stats-section{background:#fff}
    .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:var(--shadow-sm)}
    .stat{padding:30px 24px;border-right:1px solid var(--line)}
    .stat:last-child{border-right:0}
    .stat strong{display:block;color:var(--blue);font-size:38px;line-height:1.1}
    .stat span{display:block;color:var(--ink-soft);margin-top:8px;font-size:14px}
    .guide-layout{display:grid;grid-template-columns:1fr 1fr;gap:22px}
    .guide-box{padding:30px;border-radius:var(--radius-md);border:1px solid var(--line);background:#fff}
    .guide-box.dark{background:linear-gradient(135deg,#122542,#1b426b);color:#fff;border-color:#1b426b}
    .guide-box h3{font-size:24px;margin:0 0 14px}
    .guide-box p{color:var(--ink-soft);font-size:15px;line-height:1.9}
    .guide-box.dark p{color:rgba(255,255,255,.72)}
    .guide-steps{list-style:none;padding:0;margin:18px 0 0}
    .guide-steps li{display:flex;gap:12px;padding:11px 0;border-top:1px solid var(--line);font-size:14px}
    .dark .guide-steps li{border-color:rgba(255,255,255,.15)}
    .guide-steps b{color:var(--cyan);min-width:24px}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px 24px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:15px;padding:22px 24px}
    .faq-item summary{cursor:pointer;list-style:none;font-weight:800;padding-right:25px;position:relative}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";position:absolute;right:0;color:var(--blue);font-size:20px;line-height:1}
    .faq-item[open] summary:after{content:"−"}
    .faq-item p{margin:15px 0 0;color:var(--ink-soft);font-size:14px;line-height:1.9}
    .cta{
      padding:76px 0;
      background:linear-gradient(115deg,#122542,#1f51b1);
      color:#fff;
    }
    .cta-box{display:flex;align-items:center;justify-content:space-between;gap:32px}
    .cta h2{font-size:clamp(30px,4vw,46px);margin:0 0 12px}
    .cta p{margin:0;color:rgba(255,255,255,.73);max-width:660px}
    .footer{padding:62px 0 25px;background:#0d1b30;color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1.1fr;gap:38px}
    .footer-brand p{max-width:300px;margin:18px 0 0;color:rgba(255,255,255,.58);font-size:14px;line-height:1.9}
    .footer h3{font-size:15px;margin:5px 0 17px}
    .footer ul{list-style:none;padding:0;margin:0}
    .footer li{margin:9px 0;color:rgba(255,255,255,.58);font-size:13px}
    .footer li a{color:rgba(255,255,255,.68)}
    .footer li a:hover,.footer-links a:hover{color:var(--cyan)}
    .footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);color:rgba(255,255,255,.46);font-size:12px}
    .footer-links{display:flex;gap:18px}
    .footer-links a{color:rgba(255,255,255,.62)}
    :focus-visible{outline:3px solid rgba(53,200,214,.65);outline-offset:3px}
    @media(max-width:1024px){
      .nav-note{display:none}
      .hero-grid,.intro-grid,.release-layout,.split-grid,.scenario-wrap{gap:38px}
      .hero-grid{grid-template-columns:1fr .85fr}
      .feature-grid{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 34px))}
      .nav-wrap{height:70px}
      .menu-toggle{display:block}
      .nav{
        display:none;position:absolute;left:17px;right:17px;top:78px;
        flex-direction:column;align-items:stretch;padding:10px;
        background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-md)
      }
      .nav.open{display:flex}
      .nav a{padding:12px 14px}
      .nav-cta{display:none}
      .hero{min-height:auto}
      .hero-grid,.intro-grid,.release-layout,.split-grid,.scenario-wrap{grid-template-columns:1fr}
      .hero-grid{padding:70px 0 76px}
      .hero h1{font-size:clamp(40px,12vw,60px)}
      .poster{margin:0 auto;transform:none}
      .progress-list{grid-template-columns:repeat(2,1fr)}
      .progress-item:nth-child(2){border-right:0}
      .progress-item:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.1)}
      .section{padding:76px 0}
      .intro-visual img{height:330px}
      .floating-note{right:15px}
      .scenario-intro{position:static}
      .stats-grid{grid-template-columns:repeat(2,1fr)}
      .stat:nth-child(2){border-right:0}
      .stat:nth-child(-n+2){border-bottom:1px solid var(--line)}
      .guide-layout,.faq-grid{grid-template-columns:1fr}
      .cta-box{align-items:flex-start;flex-direction:column}
    }
    @media(max-width:520px){
      .brand{font-size:19px}
      .brand-mark{width:35px;height:35px}
      .hero-desc{font-size:16px}
      .hero-actions .btn{width:100%}
      .progress-list{grid-template-columns:1fr}
      .progress-item{border-right:0;border-bottom:1px solid rgba(255,255,255,.1)}
      .progress-item:last-child{border-bottom:0}
      .feature-grid,.stats-grid{grid-template-columns:1fr}
      .stat{border-right:0!important;border-bottom:1px solid var(--line)}
      .stat:last-child{border-bottom:0}
      .scenario-item{grid-template-columns:40px 1fr}
      .scenario-item>span{display:none}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{display:block}
      .footer-bottom>span{display:block;margin-bottom:10px}
      .footer-links{margin-top:15px}
    }

/* roulang page: category6 */
:root{
 --ink:#14233b;--ink-soft:#53627a;--muted:#8793a6;--line:#dfe6ef;--paper:#f6f8fb;
 --white:#fff;--navy:#122542;--blue:#2d6cdf;--blue-dark:#1f51b1;--cyan:#35c8d6;
 --gold:#f2b84b;--green:#39a979;--danger:#e56a67;--radius-sm:10px;--radius-md:18px;
 --radius-lg:28px;--shadow-sm:0 8px 24px rgba(24,47,83,.07);--shadow-md:0 18px 50px rgba(24,47,83,.12);
 --shadow-lg:0 28px 80px rgba(15,40,80,.2);--container:1200px;--ease:all .28s ease
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none;transition:var(--ease)}
img{display:block;max-width:100%;height:auto}
button,input{font:inherit}button{border:0;cursor:pointer}
ul{list-style:none}.container{width:min(var(--container),calc(100% - 48px));margin:auto}
.header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.92);backdrop-filter:blur(18px);border-bottom:1px solid rgba(223,230,239,.85)}
.nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:25px}
.brand{display:flex;align-items:center;gap:12px;font-size:22px;font-weight:900;letter-spacing:-.04em;white-space:nowrap}
.brand-mark{width:38px;height:38px;border-radius:13px;background:var(--navy);display:grid;place-items:center;color:#fff;font-size:18px;box-shadow:0 8px 18px rgba(18,37,66,.2)}
.nav{display:flex;align-items:center;gap:5px}.nav a{padding:10px 12px;border-radius:10px;color:var(--ink-soft);font-size:14px;font-weight:700;white-space:nowrap}
.nav a:hover,.nav a.active{background:#eef5ff;color:var(--blue)}
.nav-cta{display:flex;align-items:center;gap:12px}.nav-note{font-size:13px;color:var(--muted)}
.menu-toggle{display:none;background:transparent;color:var(--navy);font-size:25px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border:1px solid rgba(45,108,223,.2);border-radius:999px;color:var(--blue);background:#eef5ff;font-size:13px;font-weight:700;letter-spacing:.04em}
.eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan)}
.section{padding:96px 0;position:relative}.section-head{max-width:720px;margin-bottom:40px}.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:clamp(30px,4vw,48px);line-height:1.2;letter-spacing:-.04em;margin:15px 0}.section-head p{color:var(--ink-soft);font-size:17px;line-height:1.9}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 21px;border-radius:12px;font-weight:800;font-size:15px;border:1px solid transparent;transition:var(--ease)}
.btn-primary{background:var(--cyan);color:#082d4a;box-shadow:0 10px 22px rgba(53,200,214,.22)}.btn-primary:hover{background:#6de4e8;transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--navy)}.btn-light:hover{background:#eafaff;transform:translateY(-2px)}
.btn-outline{border-color:rgba(255,255,255,.35);background:rgba(255,255,255,.07);color:#fff}.btn-outline:hover{background:rgba(255,255,255,.15)}
.btn-dark{background:var(--navy);color:#fff}.btn-dark:hover{background:var(--blue-dark);transform:translateY(-2px)}
.hero{min-height:620px;padding:72px 0 54px;color:#fff;position:relative;overflow:hidden;background:linear-gradient(108deg,rgba(10,29,59,.96),rgba(18,53,94,.82) 58%,rgba(18,53,94,.58)),url("/assets/images/backpic/back-2.webp") center/cover no-repeat}
.hero:before{content:"";position:absolute;width:620px;height:620px;border:1px solid rgba(255,255,255,.13);border-radius:50%;right:-210px;top:-180px}.hero:after{content:"";position:absolute;width:280px;height:280px;border:1px solid rgba(53,200,214,.3);border-radius:50%;right:120px;bottom:-190px}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr .9fr;gap:65px;align-items:center}.hero-copy{max-width:650px}
.hero .eyebrow{color:#bdebf1;background:rgba(53,200,214,.12);border-color:rgba(150,239,245,.25)}
.hero h1{font-size:clamp(42px,5.2vw,70px);line-height:1.1;letter-spacing:-.065em;margin:22px 0}.hero h1 span{color:#77e4e7}.hero-desc{color:rgba(255,255,255,.8);font-size:18px;line-height:1.95}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:28px 0}.hero-points{display:flex;gap:22px;flex-wrap:wrap;color:rgba(255,255,255,.72);font-size:13px}.hero-points span{display:flex;gap:7px;align-items:center}.hero-points i{width:8px;height:8px;border-radius:50%;background:var(--gold)}
.security-panel{padding:25px;border-radius:24px;background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.24);box-shadow:var(--shadow-lg);backdrop-filter:blur(9px)}
.panel-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.panel-top strong{font-size:18px}.status{padding:6px 10px;border-radius:999px;background:rgba(57,169,121,.18);color:#a8f3ca;font-size:12px;font-weight:700}
.scan-box{padding:23px;border-radius:18px;background:#fff;color:var(--ink);display:flex;align-items:center;gap:18px}.scan-icon{width:62px;height:62px;border-radius:18px;background:#e9f8f8;color:var(--green);display:grid;place-items:center;font-size:27px}.scan-box strong{display:block;font-size:19px}.scan-box small{color:var(--muted)}
.signal-list{display:grid;gap:12px;margin-top:18px}.signal-list li{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-radius:12px;background:rgba(255,255,255,.09);font-size:13px;color:rgba(255,255,255,.8)}.signal-list b{color:#a8f3ca;font-size:12px}
.countdown{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-top:28px;padding:13px 18px;background:var(--navy);border-top:1px solid rgba(255,255,255,.12);font-size:13px}.countdown strong{color:#fff}.timer{display:flex;gap:8px;align-items:center;color:#77e4e7;font-weight:900}.timer span{min-width:30px;text-align:center}
.progress-nav{background:var(--navy);border-top:1px solid rgba(255,255,255,.12);border-bottom:1px solid rgba(255,255,255,.1)}.progress-list{display:grid;grid-template-columns:repeat(4,1fr)}
.progress-item{position:relative;padding:19px 15px 17px 47px;color:rgba(255,255,255,.55);font-size:13px;border-right:1px solid rgba(255,255,255,.1)}.progress-item:last-child{border:0}.progress-item b{display:block;color:#fff;font-size:14px;margin-bottom:3px}.progress-item em{position:absolute;left:17px;top:20px;width:20px;height:20px;border:1px solid rgba(255,255,255,.4);border-radius:50%;font-style:normal;text-align:center;line-height:18px;font-size:11px}.progress-item.active{background:rgba(53,200,214,.11)}.progress-item.active em{background:var(--cyan);color:var(--navy);border-color:var(--cyan)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.stat{padding:26px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}.stat strong{display:block;font-size:34px;color:var(--blue);line-height:1.2}.stat span{color:var(--ink-soft);font-size:14px}
.feature-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:54px;align-items:start}.feature-image{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);position:relative}.feature-image img{width:100%;height:420px;object-fit:cover}.image-label{position:absolute;left:22px;bottom:20px;padding:10px 14px;border-radius:10px;background:rgba(18,37,66,.85);color:#fff;font-size:13px}
.feature-list{display:grid;gap:16px}.feature-item{display:grid;grid-template-columns:48px 1fr;gap:16px;padding:19px 0;border-bottom:1px solid var(--line)}.feature-item:first-child{padding-top:0}.feature-item:last-child{border:0}.feature-no{width:42px;height:42px;border-radius:13px;background:#eaf2ff;color:var(--blue);display:grid;place-items:center;font-weight:900}.feature-item h3{font-size:19px;margin-bottom:5px}.feature-item p{color:var(--ink-soft);font-size:14px;line-height:1.8}
.dark-section{background:var(--navy);color:#fff}.dark-section .section-head p{color:rgba(255,255,255,.68)}.dark-section .eyebrow{background:rgba(53,200,214,.12);color:#9ce9ed;border-color:rgba(156,233,237,.25)}
.risk-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.risk-card{padding:25px;border-radius:18px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.13);transition:var(--ease)}.risk-card:hover{background:rgba(255,255,255,.11);transform:translateY(-4px)}.risk-card h3{font-size:20px;margin:13px 0 7px}.risk-card p{color:rgba(255,255,255,.67);font-size:14px}.risk-tag{color:#77e4e7;font-size:12px;font-weight:800}
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}.process-step{position:relative;padding:30px 22px 10px;border-right:1px solid var(--line)}.process-step:last-child{border:0}.process-step:before{content:"";position:absolute;top:-7px;left:22px;width:13px;height:13px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 5px #e6fafb}.process-step b{display:block;color:var(--blue);font-size:13px;margin-bottom:12px}.process-step h3{font-size:19px;margin-bottom:8px}.process-step p{color:var(--ink-soft);font-size:14px}
.check-layout{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}.check-card{padding:32px;border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow-md);border:1px solid var(--line)}.check-card h3{font-size:25px;margin-bottom:15px}.check-list{display:grid;gap:14px}.check-list li{display:flex;gap:12px;align-items:flex-start;color:var(--ink-soft);font-size:15px}.check-list li:before{content:"✓";width:23px;height:23px;flex:none;border-radius:50%;background:#e7f8ef;color:var(--green);display:grid;place-items:center;font-weight:900;font-size:13px}
.quote{padding:30px 34px;border-left:4px solid var(--cyan);background:#eef8fb;border-radius:0 18px 18px 0;color:var(--ink-soft);font-size:18px;line-height:1.9;margin-top:25px}
.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:15px}.faq{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 22px;box-shadow:var(--shadow-sm)}.faq summary{cursor:pointer;font-weight:800;list-style:none;display:flex;justify-content:space-between;gap:15px}.faq summary:after{content:"+";color:var(--blue);font-size:22px;line-height:1}.faq[open] summary:after{content:"−"}.faq p{margin-top:13px;color:var(--ink-soft);font-size:14px;line-height:1.85}
.cta{padding:68px 0;background:linear-gradient(115deg,#122542,#1e4b80);color:#fff}.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}.cta h2{font-size:clamp(28px,4vw,44px);line-height:1.2;margin:13px 0}.cta p{color:rgba(255,255,255,.7);max-width:680px}.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.footer{background:#0d1c31;color:#fff;padding:68px 0 20px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:35px}.footer-brand p{max-width:290px;margin-top:17px;color:rgba(255,255,255,.58);font-size:14px}.footer h3{font-size:15px;margin-bottom:15px}.footer ul{display:grid;gap:9px;color:rgba(255,255,255,.58);font-size:14px}.footer li a:hover{color:#77e4e7}.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);margin-top:50px;padding-top:20px;color:rgba(255,255,255,.46);font-size:12px}.footer-links{display:flex;gap:18px}.footer-links a:hover{color:#fff}
:focus-visible{outline:3px solid rgba(53,200,214,.65);outline-offset:3px}
@media(max-width:1024px){.nav-wrap{gap:12px}.nav a{padding:9px 7px;font-size:13px}.nav-note{display:none}.hero-grid{gap:35px}.feature-layout,.check-layout{gap:30px}}
@media(max-width:768px){.container{width:min(var(--container),calc(100% - 32px))}.nav{display:none;position:absolute;left:16px;right:16px;top:70px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-md);flex-direction:column;align-items:stretch}.nav.open{display:flex}.nav a{padding:12px}.menu-toggle{display:block}.nav-cta{margin-left:auto}.hero{padding:62px 0 42px}.hero-grid,.feature-layout,.check-layout{grid-template-columns:1fr}.stage{order:-1}.hero h1{font-size:45px}.progress-list{grid-template-columns:1fr 1fr}.progress-item{border-bottom:1px solid rgba(255,255,255,.1)}.stat-grid{grid-template-columns:1fr 1fr}.process{grid-template-columns:1fr 1fr;gap:20px;border-top:0}.process-step{border:1px solid var(--line);border-radius:15px;padding:24px 18px}.process-step:before{display:none}.risk-grid,.faq-list{grid-template-columns:1fr}.cta-inner{display:block}.cta-actions{margin-top:25px}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.section{padding:70px 0}.nav-cta{display:none}.hero h1{font-size:38px}.hero-desc{font-size:16px}.hero-actions,.cta-actions{flex-direction:column;align-items:stretch}.btn{width:100%}.security-panel{padding:17px}.scan-box{padding:17px}.countdown{display:block}.timer{margin-top:7px}.progress-list,.stat-grid,.process{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-links{margin-top:13px}}

/* roulang page: category3 */
:root{
 --ink:#14233b;--ink-soft:#53627a;--muted:#8793a6;--line:#dfe6ef;
 --paper:#f6f8fb;--white:#fff;--navy:#122542;--blue:#2d6cdf;
 --blue-dark:#1f51b1;--cyan:#35c8d6;--gold:#f2b84b;--green:#39a979;
 --danger:#e56a67;--radius-sm:10px;--radius-md:18px;--radius-lg:28px;
 --shadow-sm:0 8px 24px rgba(24,47,83,.07);
 --shadow-md:0 18px 50px rgba(24,47,83,.12);
 --shadow-lg:0 28px 80px rgba(15,40,80,.2);
 --container:1200px;--ease:all .28s ease
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;background:var(--paper);color:var(--ink);
 font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
 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{font:inherit}
button{cursor:pointer;border:0}
.container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
.header{
 position:sticky;top:0;z-index:30;background:rgba(255,255,255,.92);
 backdrop-filter:blur(18px);border-bottom:1px solid rgba(223,230,239,.85)
}
.nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;font-size:22px;font-weight:900;letter-spacing:-.04em;white-space:nowrap}
.brand-mark{
 width:38px;height:38px;border-radius:13px;background:var(--navy);
 display:grid;place-items:center;color:#fff;font-size:18px;
 box-shadow:0 8px 18px rgba(18,37,66,.2)
}
.nav{display:flex;align-items:center;gap:5px}
.nav a{padding:10px 12px;border-radius:10px;color:var(--ink-soft);font-size:14px;font-weight:700;white-space:nowrap}
.nav a:hover,.nav a.active{background:#eef5ff;color:var(--blue)}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-note{color:var(--muted);font-size:13px}
.menu-toggle{display:none;background:transparent;color:var(--navy);font-size:25px}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;padding:6px 12px;
 border:1px solid rgba(45,108,223,.2);border-radius:999px;color:var(--blue);
 background:#eef5ff;font-size:13px;font-weight:700;letter-spacing:.04em
}
.eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan)}
.section{padding:94px 0;position:relative}
.section-head{max-width:720px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:clamp(30px,4vw,48px);line-height:1.2;letter-spacing:-.04em;margin:16px 0}
.section-head p{font-size:17px;color:var(--ink-soft);line-height:1.9;margin:0}
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:9px;
 padding:13px 21px;border-radius:12px;font-weight:800;font-size:15px;
 transition:var(--ease);border:1px solid transparent
}
.btn-primary{background:var(--cyan);color:#082d4a;box-shadow:0 10px 22px rgba(53,200,214,.22)}
.btn-primary:hover{background:#6de4e8;transform:translateY(-2px);box-shadow:0 14px 28px rgba(53,200,214,.32)}
.btn-dark{background:var(--navy);color:#fff}
.btn-dark:hover{background:#1e3d68;transform:translateY(-2px)}
.btn-outline{border-color:var(--line);color:var(--navy);background:#fff}
.btn-outline:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-2px)}
.btn:focus,.nav a:focus,.faq-question:focus{outline:3px solid rgba(53,200,214,.35);outline-offset:3px}
.page-hero{
 padding:76px 0 72px;color:#fff;position:relative;overflow:hidden;
 background:linear-gradient(110deg,rgba(11,31,62,.96),rgba(18,50,91,.82)),
 url("/assets/images/backpic/back-2.webp") center/cover no-repeat
}
.page-hero:before{content:"";position:absolute;width:480px;height:480px;border:1px solid rgba(255,255,255,.13);border-radius:50%;right:-140px;top:-180px}
.page-hero-grid{display:grid;grid-template-columns:1fr .9fr;gap:70px;align-items:center;position:relative;z-index:1}
.page-hero h1{font-size:clamp(40px,5vw,66px);line-height:1.12;letter-spacing:-.065em;margin:18px 0}
.page-hero h1 span{color:#77e4e7}
.page-hero p{color:rgba(255,255,255,.78);font-size:18px;line-height:1.95;max-width:620px;margin:0}
.page-hero .eyebrow{color:#bdebf1;background:rgba(53,200,214,.12);border-color:rgba(150,239,245,.25)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-panel{
 background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);
 border-radius:24px;padding:22px;box-shadow:var(--shadow-lg);backdrop-filter:blur(10px)
}
.panel-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.panel-top strong{font-size:18px}
.panel-status{font-size:12px;color:#9df1d0;background:rgba(57,169,121,.16);padding:5px 9px;border-radius:999px}
.guide-row{
 display:grid;grid-template-columns:38px 1fr auto;gap:12px;align-items:center;
 padding:15px 0;border-top:1px solid rgba(255,255,255,.14)
}
.guide-num{width:30px;height:30px;border-radius:9px;background:var(--cyan);color:var(--navy);display:grid;place-items:center;font-weight:900;font-size:13px}
.guide-row b{display:block;font-size:14px}
.guide-row small{display:block;color:rgba(255,255,255,.58);font-size:12px;margin-top:2px}
.guide-check{color:#9df1d0;font-size:18px}
.progress-nav{background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-sm)}
.progress-list{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.progress-list a{display:flex;align-items:center;gap:12px;padding:19px 15px;color:var(--ink-soft);font-weight:800;font-size:14px;border-right:1px solid var(--line)}
.progress-list a:last-child{border-right:0}
.progress-list a:hover,.progress-list a.active{color:var(--blue);background:#f2f7ff}
.progress-dot{width:27px;height:27px;border-radius:50%;display:grid;place-items:center;background:#e8eef7;color:var(--blue);font-size:12px;font-weight:900}
.progress-list a.active .progress-dot{background:var(--blue);color:#fff}
.intro-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px;align-items:start}
.intro-card{background:var(--navy);color:#fff;border-radius:var(--radius-lg);padding:34px;position:relative;overflow:hidden}
.intro-card:after{content:"";position:absolute;width:180px;height:180px;border:1px solid rgba(255,255,255,.13);border-radius:50%;right:-60px;bottom:-70px}
.intro-card h3{font-size:25px;margin:0 0 14px;position:relative;z-index:1}
.intro-card p{color:rgba(255,255,255,.72);margin:0;position:relative;z-index:1}
.text-block h2{font-size:36px;line-height:1.25;margin:0 0 20px;letter-spacing:-.04em}
.text-block p{color:var(--ink-soft);line-height:2;margin:0 0 16px}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:26px;box-shadow:var(--shadow-sm);transition:var(--ease)}
.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:#bdd2f6}
.icon-box{width:44px;height:44px;border-radius:13px;background:#eef5ff;color:var(--blue);display:grid;place-items:center;font-size:21px;margin-bottom:18px}
.feature-card h3{font-size:19px;margin:0 0 9px}
.feature-card p{color:var(--ink-soft);font-size:14px;line-height:1.85;margin:0}
.check-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}
.check-image{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);position:relative}
.check-image img{width:100%;height:390px;object-fit:cover}
.check-image figcaption{position:absolute;bottom:0;left:0;right:0;padding:20px;color:#fff;background:linear-gradient(transparent,rgba(9,25,51,.85));font-size:14px}
.check-list{list-style:none;padding:0;margin:0}
.check-list li{display:grid;grid-template-columns:28px 1fr;gap:12px;padding:16px 0;border-bottom:1px solid var(--line)}
.check-list li:last-child{border-bottom:0}
.check-list b{display:block;margin-bottom:3px}
.check-list span{color:var(--ink-soft);font-size:14px;line-height:1.8}
.tick{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;background:#e7f8f1;color:var(--green);font-size:13px;font-weight:900}
.steps-section{background:#edf3fa}
.steps-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:55px}
.steps-intro{background:var(--blue);border-radius:var(--radius-lg);padding:32px;color:#fff;align-self:start;position:sticky;top:105px}
.steps-intro h3{font-size:26px;line-height:1.35;margin:0 0 14px}
.steps-intro p{color:rgba(255,255,255,.78);font-size:15px;margin:0 0 24px}
.step-item{display:grid;grid-template-columns:58px 1fr;gap:20px;padding:0 0 30px;position:relative}
.step-item:not(:last-child):after{content:"";position:absolute;left:28px;top:55px;width:2px;height:calc(100% - 42px);background:#c9d8ee}
.step-number{width:56px;height:56px;border-radius:18px;background:#fff;color:var(--blue);display:grid;place-items:center;font-size:20px;font-weight:900;box-shadow:var(--shadow-sm);position:relative;z-index:1}
.step-item h3{font-size:21px;margin:3px 0 7px}
.step-item p{color:var(--ink-soft);font-size:15px;line-height:1.9;margin:0}
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.scene-card{min-height:250px;border-radius:var(--radius-md);overflow:hidden;position:relative;color:#fff;display:flex;align-items:flex-end}
.scene-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.scene-card:after{content:"";position:absolute;inset:0;background:linear-gradient(transparent 20%,rgba(10,28,55,.9))}
.scene-content{position:relative;z-index:1;padding:25px}
.scene-content h3{font-size:23px;margin:0 0 8px}
.scene-content p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.78);margin:0}
.note-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:22px}
.note{padding:20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md)}
.note strong{display:block;color:var(--blue);font-size:27px;line-height:1.1;margin-bottom:8px}
.note span{font-size:14px;color:var(--ink-soft)}
.trust-section{background:var(--navy);color:#fff}
.trust-section .section-head p{color:rgba(255,255,255,.68)}
.trust-layout{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.trust-box{border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-md);padding:26px;background:rgba(255,255,255,.06)}
.trust-box h3{margin:0 0 10px;font-size:20px}
.trust-box p{margin:0;color:rgba(255,255,255,.68);font-size:14px;line-height:1.9}
.trust-box ul{padding-left:20px;color:rgba(255,255,255,.75);font-size:14px;margin:12px 0 0}
.faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px}
.faq-list{display:grid;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;text-align:left;padding:19px 21px;background:#fff;color:var(--ink);font-weight:800}
.faq-question span:last-child{color:var(--blue);font-size:22px;transition:var(--ease)}
.faq-answer{display:none;padding:0 21px 19px;color:var(--ink-soft);font-size:14px;line-height:1.9}
.faq-item.open .faq-answer{display:block}
.faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
.cta{
 padding:66px 0;background:linear-gradient(110deg,#eaf8fb,#eef4ff);
 border-top:1px solid var(--line);border-bottom:1px solid var(--line)
}
.cta-box{display:flex;align-items:center;justify-content:space-between;gap:30px}
.cta h2{font-size:clamp(28px,4vw,43px);line-height:1.25;margin:0 0 10px;letter-spacing:-.04em}
.cta p{color:var(--ink-soft);margin:0;max-width:650px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex-shrink:0}
.footer{background:#0d1d35;color:#fff;padding:62px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.15fr;gap:35px}
.footer-brand .brand{color:#fff;margin-bottom:18px}
.footer-brand p{color:rgba(255,255,255,.58);font-size:14px;line-height:1.9;max-width:300px;margin:0}
.footer h3{font-size:15px;margin:5px 0 15px}
.footer ul{list-style:none;padding:0;margin:0}
.footer li{color:rgba(255,255,255,.58);font-size:13px;margin:8px 0}
.footer li a{color:rgba(255,255,255,.68)}
.footer li a:hover,.footer-links a:hover{color:var(--cyan)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.13);margin-top:42px;padding-top:20px;display:flex;align-items:center;gap:18px;flex-wrap:wrap;color:rgba(255,255,255,.48);font-size:12px}
.footer-links{display:flex;gap:16px;margin-left:auto}
.footer-links a{color:rgba(255,255,255,.65)}
@media(max-width:1024px){
 .nav-note{display:none}.nav{gap:0}.nav a{padding:9px 8px;font-size:13px}
 .page-hero-grid,.intro-grid,.check-layout,.steps-layout,.faq-grid{gap:35px}
 .footer-grid{grid-template-columns:1.3fr 1fr 1fr}
 .footer-grid>div:last-child{grid-column:span 3}
}
@media(max-width:768px){
 .container{width:min(var(--container),calc(100% - 34px))}
 .nav-wrap{height:70px}.menu-toggle{display:block}
 .nav-cta{display:none}.nav{
  display:none;position:absolute;left:17px;right:17px;top:64px;
  padding:10px;background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow-md);flex-direction:column;align-items:stretch
 }
 .nav.open{display:flex}.nav a{padding:13px 14px}
 .page-hero{padding:58px 0}.page-hero-grid,.intro-grid,.check-layout,.steps-layout,.faq-grid{grid-template-columns:1fr}
 .page-hero h1{font-size:44px}.hero-panel{max-width:600px}
 .progress-list{grid-template-columns:repeat(2,1fr)}
 .progress-list a:nth-child(2){border-right:0}.progress-list a:nth-child(-n+2){border-bottom:1px solid var(--line)}
 .feature-grid{grid-template-columns:1fr 1fr}
 .steps-intro{position:static}.scene-grid{grid-template-columns:1fr}
 .cta-box{display:block}.cta-actions{margin-top:24px}
 .footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:last-child{grid-column:span 2}
 .footer-bottom{display:block}.footer-bottom>span{display:block;margin-bottom:8px}.footer-links{margin-top:14px;margin-left:0}
}
@media(max-width:520px){
 .section{padding:68px 0}.section-head{margin-bottom:28px}
 .section-head h2{font-size:32px}.page-hero h1{font-size:38px}
 .page-hero p{font-size:16px}.progress-list a{font-size:12px;padding:15px 9px;gap:7px}
 .feature-grid,.note-strip,.trust-layout{grid-template-columns:1fr}
 .feature-card{padding:22px}.check-image img{height:280px}
 .step-item{grid-template-columns:45px 1fr;gap:14px}.step-number{width:44px;height:44px;border-radius:14px;font-size:16px}
 .step-item:not(:last-child):after{left:22px;top:45px}
 .footer-grid{grid-template-columns:1fr}.footer-grid>div:last-child{grid-column:auto}
 .hero-actions .btn,.cta-actions .btn{width:100%}
}