/* roulang page: index */
:root{
      --ink:#10233f;--muted:#667892;--blue:#1f66d1;--blue-deep:#10449a;
      --cyan:#19a7c8;--paper:#f5f8fc;--line:#dfe7f1;--white:#fff;
      --soft:#edf5ff;--gold:#f4b947;--radius:22px;
      --shadow:0 18px 48px rgba(27,65,117,.11);--shadow-sm:0 8px 24px rgba(24,61,112,.08)
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.8;font-size:15px}
    a{text-decoration:none;color:inherit;transition:.25s ease}
    img{display:block;max-width:100%;width:100%;object-fit:cover}
    button,input,textarea{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(223,231,241,.8)}
    .topbar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:21px;letter-spacing:.03em;white-space:nowrap}
    .brand-mark{width:38px;height:38px;border-radius:13px;background:linear-gradient(145deg,#1f76e8,#103c96);display:grid;place-items:center;color:#fff;box-shadow:0 8px 18px rgba(31,102,209,.25)}
    .brand-mark svg{width:21px}
    .top-actions{display:flex;align-items:center;gap:12px}
    .search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:#f8fbff;border-radius:12px;padding:8px 13px;color:var(--muted)}
    .search input{border:0;outline:0;background:transparent;width:150px;color:var(--ink)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:12px;font-weight:700;transition:.25s ease}
    .btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(31,102,209,.2)}
    .btn-primary:hover{background:var(--blue-deep);transform:translateY(-2px)}
    .btn-light{background:#edf5ff;color:var(--blue)}
    .btn-light:hover{background:#dcecff}
    .channelbar{border-top:1px solid #edf1f6;overflow-x:auto}
    .channels{display:flex;gap:8px;align-items:center;height:54px;white-space:nowrap}
    .channel{padding:7px 16px;border-radius:30px;color:var(--muted);font-weight:600}
    .channel:hover,.channel.active{color:var(--blue);background:var(--soft)}
    .mobile-toggle{display:none;background:var(--soft);color:var(--blue);padding:9px 11px;border-radius:10px}
    .hero{min-height:600px;position:relative;display:flex;align-items:center;background:linear-gradient(90deg,rgba(8,31,72,.94),rgba(11,54,116,.77),rgba(12,68,132,.38)),url('/assets/images/backpic/back-1.webp') center/cover}
    .hero-content{padding:85px 0;position:relative;color:#fff}
    .hero-label{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.1);border-radius:30px;color:#d8edff;font-size:13px}
    .hero h1{font-size:clamp(36px,5.2vw,68px);line-height:1.16;max-width:760px;margin:22px 0 20px;letter-spacing:-.045em}
    .hero p{max-width:690px;color:#e2edfc;font-size:17px;line-height:2; margin-bottom:28px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero .btn-light{background:#fff;color:var(--blue)}
    .hero .btn-light:hover{background:#e6f2ff}
    .hero-note{margin-top:25px;color:#b8d2f0;font-size:13px}
    .hero-panel{position:absolute;right:7%;bottom:58px;width:250px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);border-radius:20px;padding:18px;backdrop-filter:blur(12px)}
    .hero-panel strong{font-size:30px;display:block;color:#fff}
    .hero-panel small{color:#c5ddf7}.meter{height:7px;background:rgba(255,255,255,.2);border-radius:8px;margin:15px 0 9px}.meter i{height:100%;width:78%;display:block;background:#54d1dc;border-radius:8px}
    section{padding:82px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:32px}
    .eyebrow{font-size:12px;color:var(--blue);font-weight:800;letter-spacing:.14em;text-transform:uppercase}
    h2{font-size:clamp(27px,3vw,40px);line-height:1.3;letter-spacing:-.03em;margin-top:8px}
    .section-head p{max-width:500px;color:var(--muted)}
    .stats{background:#fff;border-bottom:1px solid var(--line);padding:27px 0}
    .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
    .stat{padding-left:20px;border-left:2px solid #d9e9ff}.stat strong{display:block;color:var(--blue);font-size:29px;line-height:1.2}.stat span{color:var(--muted);font-size:13px}
    .triple-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:29px;box-shadow:var(--shadow-sm);min-height:220px}
    .feature:hover,.case:hover,.topic:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
    .icon{width:45px;height:45px;border-radius:14px;background:var(--soft);color:var(--blue);display:grid;place-items:center;font-weight:800;font-size:20px;margin-bottom:20px}
    .feature h3,.case h3,.topic h3{font-size:19px;margin-bottom:9px}.feature p,.case p,.topic p{color:var(--muted);font-size:14px}
    .dark-section{background:#0e2851;color:#fff}.dark-section .section-head p{color:#b5c9e5}.dark-section .eyebrow{color:#70d6e0}
    .scene-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:25px;align-items:stretch}
    .scene-image{min-height:390px;border-radius:var(--radius);overflow:hidden;position:relative;background:#173d73}
    .scene-image img{height:100%;opacity:.82}.image-caption{position:absolute;left:24px;right:24px;bottom:22px;background:rgba(7,28,63,.76);padding:18px;border-radius:15px;color:#fff}
    .scene-list{display:grid;gap:12px}.scene-item{background:#163763;border:1px solid rgba(255,255,255,.12);border-radius:17px;padding:20px}.scene-item b{display:block;color:#8ce5eb;margin-bottom:5px}.scene-item span{color:#c2d2e7;font-size:14px}
    .matrix{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}.matrix a{background:#fff;border:1px solid var(--line);padding:20px 13px;border-radius:16px;text-align:center;color:var(--ink);font-weight:700}.matrix a:hover{border-color:var(--blue);color:var(--blue);box-shadow:var(--shadow-sm)}
    .dashboard{display:grid;grid-template-columns:1fr 1fr;gap:25px}.dash-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm)}.dash-card h3{font-size:20px;margin-bottom:20px}.bar-row{display:grid;grid-template-columns:95px 1fr 45px;align-items:center;gap:12px;margin:16px 0;color:var(--muted);font-size:13px}.bar{height:9px;background:#edf2f8;border-radius:8px;overflow:hidden}.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--cyan));border-radius:8px}
    .compare{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.plan{background:#fff;border:1px solid var(--line);border-radius:20px;padding:25px;position:relative}.plan.recommend{border:2px solid var(--blue);box-shadow:var(--shadow)}.plan-tag{position:absolute;right:18px;top:17px;background:#e7f5f4;color:#078897;border-radius:20px;padding:3px 9px;font-size:12px}.plan h3{font-size:21px}.plan p{color:var(--muted);font-size:13px;margin:7px 0 17px}.plan li{list-style:none;padding:8px 0;border-top:1px solid #edf1f6;color:#53657d;font-size:14px}.plan li::before{content:"✓";color:#16a2a8;font-weight:bold;margin-right:8px}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0}.time-node{padding:0 22px 0 0;border-top:2px solid #b9d5f5;position:relative}.time-node:before{content:"";width:13px;height:13px;background:var(--blue);border:3px solid #dbeaff;border-radius:50%;position:absolute;top:-8px;left:0}.time-node strong{display:block;color:var(--blue);margin:22px 0 8px}.time-node p{color:var(--muted);font-size:13px}
    .reward-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:25px;align-items:center}.reward-copy{background:linear-gradient(135deg,#eaf5ff,#fff);border-radius:var(--radius);padding:34px}.reward-copy p{color:var(--muted);margin:14px 0 22px}.reward-items{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.reward{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}.reward b{display:block;color:var(--blue);font-size:24px}.reward span{font-size:13px;color:var(--muted)}
    .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.case{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-sm);transition:.25s}.case img{height:155px}.case-body{padding:22px}.case small{color:var(--blue);font-weight:bold}.case p{margin-top:9px}
    .story{display:grid;grid-template-columns:.85fr 1.15fr;gap:45px;align-items:center}.story img{height:355px;border-radius:var(--radius)}.story-copy p{color:var(--muted);margin:15px 0}.story-copy .quote{border-left:3px solid var(--cyan);padding:14px 0 14px 18px;color:var(--ink);font-weight:700}
    .topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.topic{background:#fff;border:1px solid var(--line);padding:24px;border-radius:19px;transition:.25s}.topic .topic-num{color:#a8bfdc;font-size:30px;font-weight:800}
    .news-layout{display:grid;grid-template-columns:1.4fr .6fr;gap:24px}.news-list{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden}.news-item{display:grid;grid-template-columns:90px 1fr auto;gap:18px;align-items:center;padding:22px;border-bottom:1px solid #edf1f6}.news-item:last-child{border:0}.news-date{font-size:13px;color:var(--blue);font-weight:700}.news-item h3{font-size:16px}.news-item p{color:var(--muted);font-size:13px;margin-top:4px}.news-item a{color:var(--blue);font-size:13px;font-weight:700;white-space:nowrap}.news-side{border-radius:20px;background:#143b75;color:#fff;padding:27px}.news-side p{color:#c7d8ef;margin:13px 0 20px;font-size:14px}.tag-list{display:flex;gap:8px;flex-wrap:wrap}.tag{border:1px solid #cfe1f7;background:#f4f8fd;color:var(--blue);padding:5px 11px;border-radius:20px;font-size:12px}.news-side .tag{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.2);color:#d7efff}
    .faq{display:grid;grid-template-columns:.75fr 1.25fr;gap:40px}.faq-intro p{color:var(--muted);margin-top:14px}.faq-list{display:grid;gap:12px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 23px}.faq-item summary{font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between}.faq-item summary:after{content:"＋";color:var(--blue);font-size:20px}.faq-item[open] summary:after{content:"－"}.faq-item p{color:var(--muted);font-size:14px;margin-top:12px;padding-top:12px;border-top:1px solid #edf1f6}
    .form-section{background:#eaf3ff}.form-box{display:grid;grid-template-columns:.8fr 1.2fr;gap:35px;align-items:center}.form-copy p{color:var(--muted);margin:15px 0}.form-card{background:#fff;border-radius:24px;padding:28px;box-shadow:var(--shadow)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:13px;font-weight:700}.field input,.field textarea{border:1px solid var(--line);border-radius:11px;padding:11px 13px;outline:0;background:#fbfdff}.field input:focus,.field textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px #dceaff}.field textarea{min-height:90px;resize:vertical}.form-tip{font-size:12px;color:var(--muted);margin-top:12px}
    .final-cta{padding:42px 0;background:linear-gradient(110deg,#1765ce,#123d92);color:#fff}.final-inner{display:flex;justify-content:space-between;align-items:center;gap:25px}.final-inner p{color:#cbe0fb;margin-top:7px}.final-cta .btn{background:#fff;color:var(--blue)}
    footer{background:#0b1e3d;color:#d9e6f8;padding:46px 0 25px}.footer-grid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:35px;padding-bottom:35px;border-bottom:1px solid rgba(255,255,255,.13)}footer .brand{color:#fff;margin-bottom:15px}footer p,footer li{color:#91a9c8;font-size:13px}footer h4{font-size:14px;color:#fff;margin-bottom:13px}footer ul{list-style:none;display:grid;gap:7px}footer li a:hover{color:#fff}.footer-bottom{padding-top:20px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;color:#8fa7c5;font-size:12px}.footer-bottom a{color:#b9d8fa}.footer-bottom a:hover{color:#fff}
    @media(max-width:1024px){.hero-panel{right:3%}.container{width:min(100% - 32px,900px)}.matrix{grid-template-columns:repeat(3,1fr)}.story{gap:25px}}
    @media(max-width:768px){.topbar{height:67px}.top-actions .search{display:none}.mobile-toggle{display:block}.channelbar{display:none}.channelbar.open{display:block}.channels{height:auto;padding:9px 0;flex-wrap:wrap}.hero{min-height:590px}.hero-panel{position:relative;right:auto;bottom:auto;margin-top:35px;width:100%;max-width:300px}.hero-content{padding:65px 0}.hero p{font-size:15px}.stats-grid{grid-template-columns:repeat(2,1fr);gap:22px}.triple-grid,.case-grid,.topic-grid,.compare{grid-template-columns:1fr 1fr}.scene-grid,.dashboard,.reward-grid,.story,.news-layout,.faq,.form-box{grid-template-columns:1fr}.timeline{grid-template-columns:1fr 1fr;gap:28px}.timeline .time-node{border-top:0;border-left:2px solid #b9d5f5;padding:0 0 0 20px}.timeline .time-node:before{left:-8px;top:3px}.news-side{min-height:200px}.footer-grid{grid-template-columns:1fr 1fr}}
    @media(max-width:520px){.container{width:calc(100% - 28px)}section{padding:58px 0}.section-head{display:block}.section-head p{margin-top:12px}.hero h1{font-size:38px}.hero-actions .btn{width:100%}.triple-grid,.case-grid,.topic-grid,.compare,.reward-items,.form-grid{grid-template-columns:1fr}.stats-grid{gap:16px}.stat strong{font-size:24px}.matrix{grid-template-columns:repeat(2,1fr)}.matrix a{padding:15px 8px;font-size:13px}.scene-image{min-height:280px}.news-item{grid-template-columns:1fr;gap:3px}.news-item a{margin-top:8px}.footer-grid{grid-template-columns:1fr;gap:24px}.final-inner{display:block}.final-inner .btn{margin-top:18px;width:100%}}

/* roulang page: category2 */
:root{--ink:#10233f;--muted:#667892;--blue:#1f66d1;--blue-deep:#10449a;--cyan:#19a7c8;--paper:#f5f8fc;--line:#dfe7f1;--white:#fff;--soft:#edf5ff;--gold:#f4b947;--radius:22px;--shadow:0 18px 48px rgba(27,65,117,.11);--shadow-sm:0 8px 24px rgba(24,61,112,.08)}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.8;font-size:15px}a{text-decoration:none;color:inherit;transition:.25s ease}img{display:block;width:100%;max-width:100%;object-fit:cover}button,input,textarea{font:inherit}button{cursor:pointer;border:0}.container{width:min(1180px,calc(100% - 40px));margin:auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.95);backdrop-filter:blur(16px);border-bottom:1px solid rgba(223,231,241,.85)}.topbar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:25px}.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:21px;letter-spacing:.03em;white-space:nowrap}.brand-mark{width:38px;height:38px;border-radius:13px;background:linear-gradient(145deg,#1f76e8,#103c96);display:grid;place-items:center;color:#fff;box-shadow:0 8px 18px rgba(31,102,209,.25)}.search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:#f8fbff;border-radius:12px;padding:8px 13px;color:var(--muted)}.search input{border:0;outline:0;background:transparent;width:150px;color:var(--ink)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:12px;font-weight:700;transition:.25s ease}.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(31,102,209,.2)}.btn-primary:hover{background:var(--blue-deep);transform:translateY(-2px)}.btn-light{background:#edf5ff;color:var(--blue)}.btn-light:hover{background:#dcecff}.mobile-toggle{display:none;background:var(--soft);color:var(--blue);padding:9px 11px;border-radius:10px}.channels{display:flex;gap:8px;overflow-x:auto;padding-bottom:13px;scrollbar-width:none}.channels::-webkit-scrollbar{display:none}.channel{white-space:nowrap;padding:7px 16px;border-radius:30px;color:var(--muted);font-size:14px}.channel:hover,.channel.active{background:var(--blue);color:#fff;box-shadow:0 7px 15px rgba(31,102,209,.18)}
    .hero{min-height:475px;position:relative;display:flex;align-items:center;background:linear-gradient(90deg,rgba(8,31,72,.95),rgba(11,54,116,.78),rgba(12,68,132,.42)),url('/assets/images/backpic/back-2.webp') center/cover}.hero-content{padding:72px 0;color:#fff}.hero-label{display:inline-flex;gap:8px;padding:7px 13px;border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.1);border-radius:30px;color:#d8edff;font-size:13px}.hero h1{font-size:clamp(36px,5vw,62px);line-height:1.18;max-width:760px;margin:20px 0 16px;letter-spacing:-.045em}.hero p{max-width:700px;color:#e2edfc;font-size:17px;line-height:2;margin-bottom:25px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.hero .btn-light{background:#fff;color:var(--blue)}.hero-note{margin-top:20px;color:#b8d2f0;font-size:13px}.hero-panel{position:absolute;right:7%;bottom:45px;width:255px;background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.25);border-radius:20px;padding:19px;backdrop-filter:blur(12px)}.hero-panel strong{font-size:30px;display:block;color:#fff}.hero-panel small{color:#c5ddf7}
    section{padding:72px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}.eyebrow{font-size:12px;color:var(--blue);font-weight:800;letter-spacing:.14em}.section-head h2{margin:5px 0 0;font-size:clamp(25px,3vw,36px);line-height:1.35}.section-head p{max-width:520px;color:var(--muted)}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.stat-card,.feature,.dash-card,.compare-card,.faq-item,.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}.stat-card{padding:24px}.stat-card strong{display:block;font-size:31px;color:var(--blue);line-height:1.3}.stat-card span{color:var(--muted);font-size:13px}.feature-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:20px}.feature{padding:27px;min-height:220px}.feature:hover,.dash-card:hover,.compare-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);transition:.25s}.feature h3{font-size:19px;margin:10px 0 8px}.feature p,.compare-card p{color:var(--muted);font-size:14px}.icon{width:42px;height:42px;border-radius:14px;background:var(--soft);color:var(--blue);display:grid;place-items:center;font-size:21px}
    .split{display:grid;grid-template-columns:.92fr 1.08fr;gap:30px;align-items:center}.split img{height:350px;border-radius:var(--radius);box-shadow:var(--shadow)}.text-block h2{font-size:34px;line-height:1.35;margin:8px 0 16px}.text-block p{color:var(--muted);margin:0 0 15px}.check-list{display:grid;gap:11px;margin:22px 0;padding:0;list-style:none}.check-list li{display:flex;gap:10px;align-items:flex-start}.check-list b{color:var(--cyan);font-size:18px}
    .dark-section{background:#0e2851;color:#fff}.dark-section .section-head p{color:#b5c9e5}.dark-section .eyebrow{color:#70d6e0}.dashboard{display:grid;grid-template-columns:1.25fr .75fr;gap:20px}.dash-card{padding:25px}.dash-card h3{font-size:20px;margin:0 0 20px}.bar-row{display:grid;grid-template-columns:105px 1fr 45px;align-items:center;gap:12px;margin:16px 0;color:var(--muted);font-size:13px}.bar{height:9px;border-radius:10px;background:#eaf0f7;overflow:hidden}.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--cyan));border-radius:inherit}.mini-list{display:grid;gap:13px}.mini-list div{display:flex;justify-content:space-between;padding-bottom:12px;border-bottom:1px solid var(--line)}.mini-list span{color:var(--muted)}
    .matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.matrix a{background:#fff;border:1px solid var(--line);padding:19px;border-radius:16px;text-align:center;font-weight:700}.matrix a:hover{border-color:var(--blue);color:var(--blue);box-shadow:var(--shadow-sm)}.tag-list{display:flex;gap:8px;flex-wrap:wrap}.tag{border:1px solid #cfe1f7;background:#f4f8fd;color:var(--blue);padding:5px 11px;border-radius:20px;font-size:12px}
    .compare{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.compare-card{padding:24px}.compare-card h3{margin:0 0 9px;font-size:19px}.score{font-size:36px;color:var(--blue);font-weight:800}.faq{display:grid;grid-template-columns:.75fr 1.25fr;gap:40px}.faq-intro p{color:var(--muted);margin-top:14px}.faq-list{display:grid;gap:12px}.faq-item{padding:18px 22px}.faq-item summary{font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"＋";color:var(--blue)}.faq-item[open] summary:after{content:"－"}.faq-item p{color:var(--muted);margin:12px 0 0;font-size:14px}
    .cta{background:linear-gradient(110deg,#10449a,#1f66d1);color:#fff;border-radius:28px;padding:42px 48px;display:flex;justify-content:space-between;align-items:center;gap:25px}.cta h2{font-size:30px;line-height:1.35;margin:0 0 8px}.cta p{color:#d7e8ff;margin:0}.cta .btn-light{background:#fff;color:var(--blue)}
    footer{background:#0a1d3a;color:#d8e5f5;padding:54px 0 22px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:30px}.footer-grid .brand{color:#fff}.footer-grid p{color:#9eb5d2;font-size:13px}.footer-grid h4{color:#fff;margin:4px 0 13px}.footer-grid ul{padding:0;margin:0;list-style:none;display:grid;gap:8px;font-size:13px}.footer-grid li a:hover,.footer-bottom a:hover{color:#70d6e0}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;color:#8ea7c6;font-size:12px}.form-card{padding:25px}.form-card input{width:100%;border:1px solid var(--line);border-radius:11px;padding:11px 13px;margin:8px 0 14px;outline:0}.form-card input:focus{border-color:var(--blue);box-shadow:0 0 0 3px #e2efff}
    @media(max-width:900px){.hero-panel{right:3%;opacity:.8}.stats-grid{grid-template-columns:repeat(2,1fr)}.feature-grid,.dashboard,.split{grid-template-columns:1fr}.split img{height:280px}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:620px){.container{width:min(100% - 28px,1180px)}.topbar{height:68px}.search{display:none}.mobile-toggle{display:block}.topbar>.btn{display:none}.channels{padding-bottom:10px}.hero{min-height:550px}.hero-content{padding:62px 0}.hero-panel{position:static;margin-top:25px;width:100%;max-width:280px}.hero h1{font-size:39px}.hero p{font-size:15px}.section-head{display:block}.section-head p{margin-top:12px}.stats-grid,.compare,.matrix{grid-template-columns:1fr}.feature-grid{grid-template-columns:1fr}.faq{grid-template-columns:1fr;gap:22px}.cta{display:block;padding:30px 25px}.cta .btn{margin-top:20px}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block;line-height:2}.footer-bottom span{display:block;margin-bottom:6px}}

/* roulang page: category4 */
:root{
      --ink:#10233f;--muted:#667892;--blue:#1f66d1;--blue-deep:#10449a;
      --cyan:#19a7c8;--paper:#f5f8fc;--line:#dfe7f1;--white:#fff;
      --soft:#edf5ff;--gold:#f4b947;--radius:22px;
      --shadow:0 18px 48px rgba(27,65,117,.11);--shadow-sm:0 8px 24px rgba(24,61,112,.08)
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.8;font-size:15px}
    a{text-decoration:none;color:inherit;transition:.25s ease}
    img{display:block;max-width:100%;width:100%;object-fit:cover}
    button,input,textarea{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.95);backdrop-filter:blur(16px);border-bottom:1px solid rgba(223,231,241,.85)}
    .topbar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:21px;letter-spacing:.03em;white-space:nowrap}
    .brand-mark{width:38px;height:38px;border-radius:13px;background:linear-gradient(145deg,#1f76e8,#103c96);display:grid;place-items:center;color:#fff;box-shadow:0 8px 18px rgba(31,102,209,.25);font-size:20px}
    .top-actions{display:flex;align-items:center;gap:12px}
    .search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:#f8fbff;border-radius:12px;padding:8px 13px;color:var(--muted)}
    .search input{border:0;outline:0;background:transparent;width:150px;color:var(--ink)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:12px;font-weight:700;transition:.25s ease}
    .btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(31,102,209,.2)}
    .btn-primary:hover{background:var(--blue-deep);transform:translateY(-2px)}
    .btn-light{background:#edf5ff;color:var(--blue)}
    .btn-light:hover{background:#dcecff}
    .btn-outline{border:1px solid rgba(255,255,255,.4);color:#fff;background:rgba(255,255,255,.08)}
    .btn-outline:hover{background:#fff;color:var(--blue)}
    .mobile-toggle{display:none;background:var(--soft);color:var(--blue);padding:9px 11px;border-radius:10px}
    .channels{display:flex;gap:8px;align-items:center;overflow-x:auto;padding:0 0 14px;scrollbar-width:none}
    .channels::-webkit-scrollbar{display:none}
    .channel{flex:0 0 auto;padding:8px 15px;border-radius:30px;color:var(--muted);font-weight:700;font-size:14px}
    .channel:hover{color:var(--blue);background:var(--soft)}
    .channel.active{color:#fff;background:var(--blue);box-shadow:0 7px 17px rgba(31,102,209,.2)}
    .hero{position:relative;overflow:hidden;background:linear-gradient(105deg,rgba(8,31,72,.96),rgba(11,54,116,.84),rgba(12,68,132,.66)),url('/assets/images/backpic/back-2.webp') center/cover;color:#fff}
    .hero-wrap{min-height:590px;display:grid;grid-template-columns:.8fr 1.25fr .8fr;gap:28px;align-items:center;padding:72px 0}
    .hero-side{display:grid;gap:18px}
    .value-point{border-left:2px solid #72d9e4;padding:8px 0 8px 16px}
    .value-point b{display:block;font-size:17px;color:#fff;margin-bottom:3px}
    .value-point span{color:#c5d8ef;font-size:13px;line-height:1.7}
    .hero-center{text-align:center}
    .hero-label{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.1);border-radius:30px;color:#d8edff;font-size:13px}
    .hero h1{font-size:clamp(36px,5vw,63px);line-height:1.17;margin:20px 0 16px;letter-spacing:-.045em}
    .hero p{color:#e2edfc;font-size:16px;line-height:2;margin:0 auto 24px;max-width:580px}
    .hero-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
    .hero-stage{margin:30px auto 0;width:min(430px,100%);background:#fff;border:9px solid rgba(255,255,255,.2);border-radius:24px;box-shadow:0 24px 55px rgba(0,0,0,.28);overflow:hidden;text-align:left}
    .stage-top{background:#f7faff;padding:12px 16px;display:flex;justify-content:space-between;color:var(--muted);font-size:12px}
    .stage-content{padding:18px;color:var(--ink)}
    .stage-match{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:14px}
    .team{text-align:center;font-weight:800;font-size:14px}
    .team i{display:grid;place-items:center;width:34px;height:34px;margin:0 auto 5px;border-radius:50%;background:#e9f3ff;color:var(--blue);font-style:normal}
    .vs{color:var(--muted);font-size:12px}
    .stage-bars{display:grid;gap:10px;margin-top:16px}
    .stage-bar{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--muted)}
    .stage-bar em{height:7px;border-radius:10px;background:#dcecff;flex:1;font-style:normal;overflow:hidden}
    .stage-bar em:after{content:"";display:block;height:100%;width:68%;background:var(--blue);border-radius:10px}
    .stage-bar:nth-child(2) em:after{width:52%;background:var(--cyan)}
    .stage-bar:nth-child(3) em:after{width:38%;background:var(--gold)}
    section{padding:76px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}
    .section-head h2{font-size:clamp(26px,3vw,38px);line-height:1.3;margin:8px 0 0;letter-spacing:-.03em}
    .section-head p{max-width:510px;color:var(--muted);margin:0}
    .eyebrow{font-size:12px;color:var(--blue);font-weight:800;letter-spacing:.14em}
    .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .stat{background:#fff;border:1px solid var(--line);border-radius:18px;padding:23px;box-shadow:var(--shadow-sm)}
    .stat strong{display:block;font-size:32px;color:var(--blue);line-height:1.2}
    .stat span{color:var(--muted);font-size:13px}
    .matrix{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
    .matrix a{background:#fff;border:1px solid var(--line);padding:23px 16px;border-radius:16px;text-align:center;color:var(--ink);font-weight:700}
    .matrix a:hover{border-color:var(--blue);color:var(--blue);box-shadow:var(--shadow-sm);transform:translateY(-3px)}
    .matrix small{display:block;color:var(--muted);font-weight:400;font-size:12px;margin-top:5px}
    .dark-section{background:#0e2851;color:#fff}
    .dark-section .section-head p{color:#b5c9e5}
    .dark-section .eyebrow{color:#70d6e0}
    .principle-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:26px;align-items:stretch}
    .principle-image{min-height:350px;border-radius:var(--radius);overflow:hidden;position:relative}
    .principle-image img{height:100%;opacity:.86}
    .image-caption{position:absolute;left:22px;right:22px;bottom:20px;color:#fff;font-weight:700;font-size:18px;text-shadow:0 2px 12px #071b39}
    .principle-list{display:grid;gap:12px}
    .principle-item{background:#163763;border:1px solid rgba(255,255,255,.12);border-radius:17px;padding:20px}
    .principle-item b{display:block;color:#8ce5eb;margin-bottom:5px}
    .principle-item span{color:#c2d2e7;font-size:14px}
    .flow{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
    .flow-step{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px 17px;position:relative;box-shadow:var(--shadow-sm)}
    .flow-step:not(:last-child):after{content:"→";position:absolute;right:-17px;top:38%;color:var(--cyan);font-weight:800;font-size:20px;z-index:2}
    .step-num{display:grid;place-items:center;width:32px;height:32px;border-radius:10px;background:var(--soft);color:var(--blue);font-weight:800;margin-bottom:15px}
    .flow-step h3{font-size:16px;margin:0 0 7px}
    .flow-step p{font-size:13px;color:var(--muted);margin:0}
    .comparison{display:grid;grid-template-columns:1fr 1fr;gap:22px}
    .compare-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:27px;box-shadow:var(--shadow-sm)}
    .compare-card.good{border-top:4px solid var(--cyan)}
    .compare-card.bad{border-top:4px solid #e5a847}
    .compare-card h3{margin:0 0 17px;font-size:20px}
    .compare-list{display:grid;gap:13px}
    .compare-list li{list-style:none;display:flex;gap:10px;color:var(--muted);font-size:14px}
    .compare-list li:before{content:"✓";color:var(--cyan);font-weight:800}
    .bad .compare-list li:before{content:"!";color:#d08a19}
    .scenario-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px}
    .scenario-image{border-radius:var(--radius);overflow:hidden;min-height:280px}
    .scenario-image img{height:100%}
    .scenario-copy{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:29px;box-shadow:var(--shadow-sm)}
    .scenario-copy h3{font-size:24px;margin:0 0 12px}
    .scenario-copy p{color:var(--muted)}
    .tag-list{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}
    .tag{border:1px solid #cfe1f7;background:#f4f8fd;color:var(--blue);padding:5px 11px;border-radius:20px;font-size:12px}
    .faq{display:grid;grid-template-columns:.75fr 1.25fr;gap:40px}
    .faq-intro p{color:var(--muted);margin-top:14px}
    .faq-list{display:grid;gap:12px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 23px}
    .faq-item summary{font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";color:var(--blue);font-size:19px}
    .faq-item[open] summary:after{content:"−"}
    .faq-item p{color:var(--muted);font-size:14px;margin:12px 0 0}
    .cta{background:linear-gradient(110deg,#10449a,#1f66d1);color:#fff;border-radius:28px;padding:45px 52px;display:flex;justify-content:space-between;align-items:center;gap:28px;box-shadow:var(--shadow)}
    .cta h2{font-size:32px;line-height:1.35;margin:0 0 10px}
    .cta p{color:#d9e9ff;margin:0;max-width:650px}
    footer{background:#0b1d38;color:#b9c9df;padding:52px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.35fr .8fr .8fr 1fr;gap:35px}
    footer .brand{color:#fff;margin-bottom:14px}
    footer h4{color:#fff;margin:0 0 13px;font-size:15px}
    footer ul{list-style:none;padding:0;margin:0;display:grid;gap:7px;font-size:13px}
    footer a:hover{color:#fff}
    footer p{font-size:13px;line-height:1.9;margin:0}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;font-size:12px}
    :focus-visible{outline:3px solid rgba(25,167,200,.45);outline-offset:3px}
    @media(max-width:1024px){
      .hero-wrap{grid-template-columns:1fr 1.3fr;}.hero-side:last-child{display:none}
      .stats-grid{grid-template-columns:repeat(2,1fr)}.flow{grid-template-columns:repeat(3,1fr)}
      .flow-step:nth-child(3):after{display:none}.matrix{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(100% - 28px,620px)}.topbar{height:68px}.top-actions .search,.top-actions>.btn{display:none}.mobile-toggle{display:block}
      .hero-wrap{display:block;padding:58px 0}.hero-center{text-align:left}.hero p{margin-left:0}.hero-actions{justify-content:flex-start}.hero-stage{margin-left:0}
      .hero-side{display:none}.section-head{display:block}.section-head p{margin-top:12px}.principle-grid,.scenario-grid,.faq{grid-template-columns:1fr}
           .comparison{grid-template-columns:1fr}.cta{display:block;padding:34px 25px}.cta .btn{margin-top:22px}.footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}
    }
    @media(max-width:520px){
      body{font-size:14px}.channels{padding-bottom:10px}.channel{font-size:13px;padding:7px 12px}
      .hero h1{font-size:38px}.hero p{font-size:15px}.hero-stage{border-width:6px}
      section{padding:57px 0}.stats-grid,.matrix,.flow{grid-template-columns:1fr}
      .flow-step:not(:last-child):after{content:"↓";right:auto;left:48%;top:auto;bottom:-22px}
      .footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:8px}
    }

/* roulang page: category1 */
:root{--ink:#10233f;--muted:#667892;--blue:#1f66d1;--blue-deep:#10449a;--cyan:#19a7c8;--paper:#f5f8fc;--line:#dfe7f1;--white:#fff;--soft:#edf5ff;--gold:#f4b947;--radius:22px;--shadow:0 18px 48px rgba(27,65,117,.11);--shadow-sm:0 8px 24px rgba(24,61,112,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.8;font-size:15px}a{text-decoration:none;color:inherit;transition:.25s ease}img{display:block;max-width:100%;width:100%;object-fit:cover}button,input,textarea{font:inherit}button{cursor:pointer;border:0}.container{width:min(1180px,calc(100% - 40px));margin:auto}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.95);backdrop-filter:blur(16px);border-bottom:1px solid rgba(223,231,241,.85)}.topbar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:25px}.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:21px;letter-spacing:.03em;white-space:nowrap}.brand-mark{width:38px;height:38px;border-radius:13px;background:linear-gradient(145deg,#1f76e8,#103c96);display:grid;place-items:center;color:#fff;box-shadow:0 8px 18px rgba(31,102,209,.25)}.brand-mark svg{width:21px}.top-actions{display:flex;align-items:center;gap:12px}.search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:#f8fbff;border-radius:12px;padding:8px 13px;color:var(--muted)}.search input{border:0;outline:0;background:transparent;width:150px;color:var(--ink)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:12px;font-weight:700;transition:.25s ease}.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(31,102,209,.2)}.btn-primary:hover{background:var(--blue-deep);transform:translateY(-2px)}.btn-light{background:#edf5ff;color:var(--blue)}.btn-light:hover{background:#dcecff}.mobile-toggle{display:none;background:var(--soft);color:var(--blue);padding:9px 11px;border-radius:10px}.channels{display:flex;gap:8px;overflow-x:auto;padding-bottom:12px;scrollbar-width:none}.channels::-webkit-scrollbar{display:none}.channel{padding:8px 16px;border-radius:30px;color:var(--muted);font-weight:700;white-space:nowrap}.channel:hover,.channel.active{background:var(--soft);color:var(--blue)}
.hero{min-height:560px;position:relative;display:flex;align-items:center;background:linear-gradient(90deg,rgba(8,31,72,.94),rgba(11,54,116,.77),rgba(12,68,132,.36)),url('/assets/images/backpic/back-2.webp') center/cover}.hero-content{padding:90px 0;color:#fff;position:relative;z-index:2}.hero-label{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.1);border-radius:30px;color:#d8edff;font-size:13px}.hero h1{font-size:clamp(36px,5vw,64px);line-height:1.16;max-width:760px;margin:22px 0 18px;letter-spacing:-.045em}.hero p{max-width:690px;color:#e2edfc;font-size:17px;line-height:2;margin-bottom:28px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.hero .btn-light{background:#fff;color:var(--blue)}.hero-note{margin-top:24px;color:#b8d2f0;font-size:13px}.play-button{width:76px;height:76px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.93);color:var(--blue);font-size:24px;box-shadow:0 12px 30px rgba(0,0,0,.2);margin-bottom:18px;transition:.25s}.play-button:hover{transform:scale(1.06);background:#fff}.hero-panel{position:absolute;right:7%;bottom:55px;width:255px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);border-radius:20px;padding:20px;backdrop-filter:blur(12px);z-index:2}.hero-panel strong{font-size:31px;display:block;color:#fff}.hero-panel small{color:#c5ddf7}
section{padding:78px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}.eyebrow{font-size:12px;color:var(--blue);font-weight:800;letter-spacing:.14em}.section-head h2{font-size:clamp(26px,3vw,38px);line-height:1.3;margin:8px 0}.section-head p{max-width:520px;color:var(--muted)}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.stat{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--shadow-sm)}.stat strong{display:block;font-size:31px;color:var(--blue);line-height:1.3}.stat span{color:var(--muted);font-size:13px}
.matrix{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.matrix a{background:#fff;border:1px solid var(--line);padding:21px 15px;border-radius:16px;text-align:center;font-weight:700}.matrix a:hover{border-color:var(--blue);color:var(--blue);box-shadow:var(--shadow-sm);transform:translateY(-3px)}
.dark-section{background:#0e2851;color:#fff}.dark-section .section-head p{color:#b5c9e5}.dark-section .eyebrow{color:#70d6e0}.dashboard{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}.dash-card{background:#fff;color:var(--ink);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm)}.dash-card h3{font-size:20px;margin:0 0 20px}.bar-row{display:grid;grid-template-columns:100px 1fr 45px;align-items:center;gap:12px;margin:17px 0;color:var(--muted);font-size:13px}.bar{height:9px;border-radius:20px;background:#e8eff8;overflow:hidden}.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--cyan));border-radius:20px}.trend{display:grid;grid-template-columns:repeat(6,1fr);align-items:end;gap:12px;height:160px;padding-top:15px}.trend span{display:block;background:#acd7f3;border-radius:8px 8px 3px 3px;min-height:28px}.trend div{text-align:center;color:var(--muted);font-size:12px}
.split{display:grid;grid-template-columns:.9fr 1.1fr;gap:35px;align-items:center}.split img{height:365px;border-radius:var(--radius)}.copy h2{font-size:34px;line-height:1.35;margin:10px 0 16px}.copy p{color:var(--muted);margin:0 0 16px}.check-list{display:grid;gap:12px;margin:22px 0;padding:0;list-style:none}.check-list li{display:flex;gap:10px;align-items:flex-start}.check-list b{color:var(--blue)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.step{background:#fff;border:1px solid var(--line);border-radius:19px;padding:24px;position:relative}.step-no{width:34px;height:34px;border-radius:11px;background:var(--soft);color:var(--blue);display:grid;place-items:center;font-weight:800;margin-bottom:18px}.step h3{margin:0 0 8px;font-size:18px}.step p{color:var(--muted);font-size:14px;margin:0}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:22px}.compare-card{border-radius:22px;padding:28px;border:1px solid var(--line);background:#fff}.compare-card.highlight{background:#eaf4ff;border-color:#b9d5f5}.compare-card h3{margin:0 0 17px}.compare-card ul{list-style:none;margin:0;padding:0;display:grid;gap:13px;color:var(--muted)}.compare-card li:before{content:"✓";color:var(--blue);font-weight:800;margin-right:9px}
.scenes{display:grid;grid-template-columns:1.15fr .85fr;gap:25px}.scene-image img{height:100%;min-height:300px;border-radius:var(--radius)}.scene-list{display:grid;gap:12px}.scene-item{background:#fff;border:1px solid var(--line);border-radius:17px;padding:20px;box-shadow:var(--shadow-sm)}.scene-item b{display:block;color:var(--blue);margin-bottom:5px}.scene-item span{color:var(--muted);font-size:14px}
.faq{display:grid;grid-template-columns:.75fr 1.25fr;gap:40px}.faq-intro p{color:var(--muted);margin-top:14px}.faq-list{display:grid;gap:12px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 23px}.faq-item summary{font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"＋";color:var(--blue)}.faq-item[open] summary:after{content:"－"}.faq-item p{color:var(--muted);font-size:14px;margin:12px 0 0}
.cta{background:linear-gradient(105deg,#10449a,#1f66d1);color:#fff;border-radius:28px;padding:48px 55px;display:flex;justify-content:space-between;align-items:center;gap:25px}.cta h2{font-size:32px;line-height:1.35;margin:0 0 9px}.cta p{color:#d7e8ff;margin:0;max-width:630px}.cta .btn{background:#fff;color:var(--blue)}.cta .btn:hover{background:#eaf4ff}
footer{background:#0b1d38;color:#d5e2f3;padding:58px 0 20px}.footer-grid{display:grid;grid-template-columns:1.3fr .8fr .8fr 1.1fr;gap:35px}.footer-grid .brand{color:#fff}.footer-grid p{color:#9fb4cf;font-size:13px}.footer-grid h4{color:#fff;margin:5px 0 13px}.footer-grid ul{list-style:none;padding:0;margin:0;display:grid;gap:8px;font-size:13px}.footer-grid li a:hover,.footer-bottom a:hover{color:#78dcea}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;color:#91a8c4;font-size:12px}
:focus-visible{outline:3px solid rgba(25,167,200,.55);outline-offset:3px}
@media(max-width:1024px){.hero-panel{right:3%}.stats-grid{grid-template-columns:repeat(2,1fr)}.matrix{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.topbar{height:68px}.top-actions .search,.top-actions>.btn{display:none}.mobile-toggle{display:block}.channels{padding-bottom:10px}.hero{min-height:650px}.hero-content{padding:70px 0}.hero-panel{position:relative;right:auto;bottom:auto;margin:10px 0 35px;width:220px}.dashboard,.split,.scenes,.faq{grid-template-columns:1fr}.steps{grid-template-columns:repeat(2,1fr)}.compare{grid-template-columns:1fr}.section-head{display:block}.section-head p{margin-top:12px}.cta{display:block;padding:35px 27px}.cta .btn{margin-top:22px}.footer-bottom{display:block}.footer-bottom span{display:block;margin:7px 0}}
@media(max-width:520px){.container{width:min(100% - 28px,1180px)}.brand{font-size:18px}.brand-mark{width:34px;height:34px}.hero h1{font-size:38px}.hero p{font-size:15px}.stats-grid,.steps{grid-template-columns:1fr}.matrix{grid-template-columns:repeat(2,1fr);gap:10px}.matrix a{padding:16px 8px;font-size:13px}.dash-card{padding:20px}.bar-row{grid-template-columns:78px 1fr 36px;gap:7px}.copy h2,.cta h2{font-size:27px}.footer-grid{grid-template-columns:1fr;gap:20px}.section-head h2{font-size:29px}}

/* roulang page: category6 */
:root{
      --ink:#10233f;
      --muted:#667892;
      --blue:#1f66d1;
      --blue-deep:#10449a;
      --cyan:#19a7c8;
      --paper:#f5f8fc;
      --line:#dfe7f1;
      --white:#fff;
      --soft:#edf5ff;
      --gold:#f4b947;
      --radius:22px;
      --shadow:0 18px 48px rgba(27,65,117,.11);
      --shadow-sm:0 8px 24px rgba(24,61,112,.08)
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.8;font-size:15px}
    a{text-decoration:none;color:inherit;transition:.25s ease}
    img{display:block;max-width:100%;width:100%;object-fit:cover}
    button,input,textarea{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.95);backdrop-filter:blur(16px);border-bottom:1px solid rgba(223,231,241,.85)}
    .topbar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:21px;letter-spacing:.03em;white-space:nowrap}
    .brand-mark{width:38px;height:38px;border-radius:13px;background:linear-gradient(145deg,#1f76e8,#103c96);display:grid;place-items:center;color:#fff;box-shadow:0 8px 18px rgba(31,102,209,.25);font-size:20px}
    .top-actions{display:flex;align-items:center;gap:12px}
    .search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:#f8fbff;border-radius:12px;padding:8px 13px;color:var(--muted)}
    .search input{border:0;outline:0;background:transparent;width:150px;color:var(--ink)}
    .search:focus-within{border-color:var(--blue);box-shadow:0 0 0 4px rgba(31,102,209,.1)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:12px;font-weight:700;transition:.25s ease}
    .btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(31,102,209,.2)}
    .btn-primary:hover{background:var(--blue-deep);transform:translateY(-2px)}
    .btn-light{background:#edf5ff;color:var(--blue)}
    .btn-light:hover{background:#dcecff}
    .mobile-toggle{display:none;background:var(--soft);color:var(--blue);padding:9px 11px;border-radius:10px}
    .channels{display:flex;align-items:center;gap:8px;overflow-x:auto;padding:0 0 13px;scrollbar-width:none}
    .channels::-webkit-scrollbar{display:none}
    .channel{flex:0 0 auto;color:var(--muted);font-weight:700;padding:8px 15px;border-radius:30px;font-size:14px}
    .channel:hover{color:var(--blue);background:var(--soft)}
    .channel.active{background:var(--blue);color:#fff;box-shadow:0 7px 17px rgba(31,102,209,.2)}
    .hero-inner{padding:84px 0 78px;position:relative}
    .inner-hero{background:linear-gradient(90deg,rgba(8,31,72,.95),rgba(11,54,116,.76),rgba(12,68,132,.42)),url('/assets/images/backpic/back-2.webp') center/cover}
    .hero-kicker,.eyebrow{font-size:12px;color:#63d5e1;font-weight:800;letter-spacing:.14em;text-transform:uppercase}
    .hero-inner h1{font-size:clamp(34px,5vw,62px);line-height:1.18;letter-spacing:-.045em;color:#fff;max-width:750px;margin:18px 0}
    .hero-inner p{color:#dfecfb;font-size:17px;line-height:2;max-width:710px;margin:0 0 25px}
    .hero-tools{display:flex;gap:10px;flex-wrap:wrap}
    .hero-note{color:#b8d2f0;font-size:13px;margin-top:22px}
    section{padding:76px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}
    .section-head h2{font-size:clamp(25px,3vw,38px);line-height:1.3;margin:7px 0 0;letter-spacing:-.03em}
    .section-head p{max-width:500px;color:var(--muted);margin:0}
    .surface{background:#fff}
    .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .stat-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:var(--shadow-sm)}
    .stat-card strong{display:block;color:var(--blue);font-size:32px;line-height:1.2}
    .stat-card span{display:block;color:var(--muted);margin-top:5px}
    .stat-card small{display:block;color:#8797ac;margin-top:12px;font-size:12px}
    .topic-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch}
    .topic-main{position:relative;min-height:390px;border-radius:var(--radius);overflow:hidden;color:#fff;background:#123662}
    .topic-main img{height:100%;position:absolute;inset:0;opacity:.67}
    .topic-main:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(5,26,61,.9),rgba(5,26,61,.08))}
    .topic-copy{position:absolute;z-index:1;left:30px;right:30px;bottom:28px}
    .topic-copy h3{font-size:28px;line-height:1.35;margin:10px 0}
    .topic-copy p{color:#d4e3f5;margin:0}
    .topic-side{display:grid;gap:14px}
    .mini-topic{display:grid;grid-template-columns:115px 1fr;gap:16px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:var(--shadow-sm)}
    .mini-topic img{height:104px;border-radius:12px}
    .mini-topic h3{font-size:17px;line-height:1.4;margin:7px 0}
    .mini-topic p{color:var(--muted);font-size:13px;margin:0}
    .badge{display:inline-flex;padding:4px 10px;border-radius:20px;background:#e9f6fa;color:#078897;font-size:12px;font-weight:700}
    .matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .matrix-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:23px;min-height:175px;box-shadow:var(--shadow-sm);transition:.25s}
    .matrix-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#bdd6f5}
    .matrix-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:13px;background:var(--soft);color:var(--blue);font-size:20px;margin-bottom:14px}
    .matrix-card h3{font-size:18px;margin:0 0 7px}
    .matrix-card p{color:var(--muted);font-size:14px;margin:0}
    .insight-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:25px;align-items:stretch}
    .insight-image{border-radius:var(--radius);overflow:hidden;min-height:350px}
    .insight-image img{height:100%}
    .insight-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:31px;box-shadow:var(--shadow-sm)}
    .insight-panel h3{font-size:25px;line-height:1.4;margin:9px 0 14px}
    .insight-panel p{color:var(--muted)}
    .signal-list{display:grid;gap:12px;margin:22px 0}
    .signal{display:flex;gap:12px;align-items:flex-start;padding:13px 0;border-top:1px solid #edf1f6}
    .signal:first-child{border-top:0}
    .signal b{color:var(--blue);font-size:13px;min-width:88px}
    .signal span{color:var(--muted);font-size:14px}
    .dark-section{background:#0e2851;color:#fff}
    .dark-section .section-head p{color:#b5c9e5}
    .dark-section .eyebrow{color:#70d6e0}
    .compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
    .compare-card{background:#163763;border:1px solid rgba(255,255,255,.13);border-radius:20px;padding:25px}
    .compare-card h3{font-size:20px;margin:0 0 18px}
    .bar-row{display:grid;grid-template-columns:88px 1fr 43px;align-items:center;gap:12px;margin:16px 0;color:#c4d5ea;font-size:13px}
    .bar{height:8px;background:rgba(255,255,255,.14);border-radius:20px;overflow:hidden}
    .bar i{display:block;height:100%;border-radius:20px;background:linear-gradient(90deg,#34c7d1,#77e0e4)}
    .compare-foot{color:#9eb8d7;font-size:13px;border-top:1px solid rgba(255,255,255,.12);padding-top:15px;margin-top:20px}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow-sm);overflow:hidden}
    .step{padding:27px 23px;border-right:1px solid var(--line);position:relative}
    .step:last-child{border:0}
    .step-num{color:var(--blue);font-weight:800;font-size:13px}
    .step h3{font-size:18px;margin:10px 0 7px}
    .step p{color:var(--muted);font-size:14px;margin:0}
    .evidence-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
    .evidence-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:27px;box-shadow:var(--shadow-sm)}
    .evidence-card h3{font-size:20px;margin:0 0 11px}
    .evidence-card p{color:var(--muted);margin:0 0 18px}
    .check-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}
    .check-list li{display:flex;gap:10px;color:#435875;font-size:14px}
    .check-list li:before{content:"✓";color:var(--cyan);font-weight:800}
    .faq{display:grid;grid-template-columns:.75fr 1.25fr;gap:40px}
    .faq-intro p{color:var(--muted);margin-top:14px}
    .faq-list{display:grid;gap:12px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:19px 22px}
    .faq-item summary{font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:20px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";color:var(--blue);font-size:20px;line-height:1}
    .faq-item[open] summary:after{content:"−"}
    .faq-item p{color:var(--muted);font-size:14px;margin:13px 0 0}
    .cta{padding:65px 0;background:linear-gradient(110deg,#eaf4ff,#f5fbff)}
    .cta-box{display:flex;align-items:center;justify-content:space-between;gap:28px;background:#fff;border:1px solid #cfe0f5;border-radius:26px;padding:34px 38px;box-shadow:var(--shadow)}
    .cta-box h2{font-size:30px;line-height:1.35;margin:0 0 8px}
    .cta-box p{color:var(--muted);margin:0;max-width:670px}
    .cta-actions{display:flex;gap:10px;flex-wrap:wrap;flex:0 0 auto}
    footer{background:#0b2347;color:#d5e2f3;padding:54px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1.3fr;gap:35px}
    footer .brand{color:#fff}
    footer .brand-mark{box-shadow:none}
    footer p{color:#a9bfdc;font-size:13px;line-height:1.9}
    footer h4{color:#fff;margin:0 0 13px;font-size:15px}
    footer ul{list-style:none;padding:0;margin:0;display:grid;gap:7px}
    footer li a{color:#a9bfdc;font-size:13px}
    footer li a:hover,footer a:hover{color:#70d6e0}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.13);margin-top:35px;padding-top:17px;display:flex;justify-content:space-between;gap:20px;color:#8fa9c9;font-size:12px}
    .footer-bottom span{max-width:75%}
    :focus-visible{outline:3px solid rgba(25,167,200,.45);outline-offset:3px}
    @media(max-width:1024px){
      .stats-grid{grid-template-columns:repeat(2,1fr)}
      .topic-layout,.insight-wrap{grid-template-columns:1fr}
      .topic-main{min-height:330px}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(100% - 28px,620px)}
      .topbar{height:68px}
      .top-actions .search,.top-actions>.btn{display:none}
      .mobile-toggle{display:block}
      .channels{padding-bottom:10px}
      .hero-inner{padding:64px 0}
      .hero-inner p{font-size:15px}
      section{padding:57px 0}
      .section-head{display:block;margin-bottom:23px}
      .section-head p{margin-top:12px}
      .matrix,.evidence-grid,.compare-grid{grid-template-columns:1fr}
      .steps{grid-template-columns:1fr 1fr}
      .step:nth-child(2){border-right:0}
      .step:nth-child(-n+2){border-bottom:1px solid var(--line)}
      .faq{grid-template-columns:1fr;gap:22px}
      .cta-box{display:block;padding:27px}
      .cta-actions{margin-top:22px}
    }
    @media(max-width:520px){
      .brand{font-size:18px}
      .brand-mark{width:34px;height:34px}
      .stats-grid{grid-template-columns:1fr 1fr;gap:11px}
      .stat-card{padding:17px}
      .stat-card strong{font-size:25px}
      .mini-topic{grid-template-columns:92px 1fr;padding:9px}
      .mini-topic img{height:88px}
      .mini-topic h3{font-size:15px}
      .topic-copy{left:20px;right:20px;bottom:20px}
      .topic-copy h3{font-size:22px}
      .steps{grid-template-columns:1fr}
      .step{border-right:0;border-bottom:1px solid var(--line)}
      .step:last-child{border-bottom:0}
      .footer-grid{grid-template-columns:1fr;gap:22px}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;max-width:100%;margin-bottom:9px}
      .hero-tools .btn{width:100%}
    }

/* roulang page: category5 */
:root{
      --ink:#10233f;--muted:#667892;--blue:#1f66d1;--blue-deep:#10449a;
      --cyan:#19a7c8;--paper:#f5f8fc;--line:#dfe7f1;--white:#fff;
      --soft:#edf5ff;--gold:#f4b947;--radius:22px;
      --shadow:0 18px 48px rgba(27,65,117,.11);
      --shadow-sm:0 8px 24px rgba(24,61,112,.08)
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.8;font-size:15px}
    a{text-decoration:none;color:inherit;transition:.25s ease}
    img{display:block;max-width:100%;width:100%;object-fit:cover}
    button,input,textarea{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(223,231,241,.8)}
    .topbar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:21px;letter-spacing:.03em;white-space:nowrap}
    .brand-mark{width:38px;height:38px;border-radius:13px;background:linear-gradient(145deg,#1f76e8,#103c96);display:grid;place-items:center;color:#fff;box-shadow:0 8px 18px rgba(31,102,209,.25)}
    .top-actions{display:flex;align-items:center;gap:12px}
    .search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:#f8fbff;border-radius:12px;padding:8px 13px;color:var(--muted)}
    .search input{border:0;outline:0;background:transparent;width:150px;color:var(--ink)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:12px;font-weight:700;transition:.25s ease}
    .btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(31,102,209,.2)}
    .btn-primary:hover{background:var(--blue-deep);transform:translateY(-2px)}
    .btn-light{background:#edf5ff;color:var(--blue)}
    .btn-light:hover{background:#dcecff}
    .mobile-toggle{display:none;background:var(--soft);color:var(--blue);padding:9px 11px;border-radius:10px}
    .channels{display:flex;align-items:center;gap:8px;overflow-x:auto;padding:10px 0 13px;scrollbar-width:none}
    .channels::-webkit-scrollbar{display:none}
    .channel{flex:0 0 auto;border:1px solid transparent;border-radius:20px;padding:6px 15px;color:var(--muted);font-size:13px;white-space:nowrap}
    .channel:hover{color:var(--blue);background:var(--soft)}
    .channel.active{background:#e9f2ff;color:var(--blue);border-color:#cfe1f7;font-weight:700}
    .inner-hero{position:relative;overflow:hidden;background:linear-gradient(90deg,rgba(8,31,72,.95),rgba(11,54,116,.78)),url('/assets/images/backpic/back-2.webp') center/cover;color:#fff}
    .inner-hero .container{min-height:390px;display:flex;align-items:center}
    .hero-copy{max-width:760px;padding:72px 0}
    .hero-label,.tag{display:inline-flex;align-items:center;padding:6px 12px;border-radius:20px;font-size:12px}
    .hero-label{border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.1);color:#d8edff}
    h1{font-size:clamp(34px,5vw,60px);line-height:1.2;letter-spacing:-.04em;margin:18px 0}
    .hero-copy p{max-width:680px;color:#e0edfc;font-size:17px}
    section{padding:76px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}
    .section-head h2{font-size:clamp(26px,3vw,38px);line-height:1.3}
    .section-head p{max-width:520px;color:var(--muted)}
    .eyebrow{font-size:12px;color:var(--blue);font-weight:800;letter-spacing:.14em;margin-bottom:8px}
    .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .stat,.card,.step,.faq-item,.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
    .stat{padding:25px}
    .stat strong{font-size:32px;color:var(--blue);display:block;line-height:1.2}
    .stat span{color:var(--muted);font-size:13px}
    .risk-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:25px;align-items:stretch}
    .card{padding:30px}
    .card h3{font-size:21px;margin-bottom:10px}
    .card p{color:var(--muted)}
    .card img{height:270px;border-radius:16px;margin:-4px 0 23px}
    .matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:20px}
    .matrix-item{padding:18px;border-radius:16px;background:#f7faff;border:1px solid #e0ebf8}
    .matrix-item b{display:block;color:var(--blue);margin-bottom:4px}
    .matrix-item span{font-size:13px;color:var(--muted)}
    .dark-section{background:#0e2851;color:#fff}
    .dark-section .section-head p{color:#b5c9e5}
    .dark-section .eyebrow{color:#70d6e0}
    .principles{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .principle{padding:22px;border:1px solid rgba(255,255,255,.13);border-radius:17px;background:#163763}
    .principle b{display:block;color:#8ce5eb;font-size:17px;margin-bottom:6px}
    .principle p{color:#c2d2e7;font-size:14px}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
    .step{padding:24px;position:relative}
    .step-num{width:34px;height:34px;display:grid;place-items:center;border-radius:11px;background:#e8f2ff;color:var(--blue);font-weight:800;margin-bottom:18px}
    .step h3{font-size:17px;margin-bottom:7px}
    .step p{font-size:13px;color:var(--muted)}
    .check-list{display:grid;gap:13px;margin-top:20px}
    .check-list li{list-style:none;padding:14px 16px 14px 43px;background:#fff;border:1px solid var(--line);border-radius:14px;position:relative;color:var(--muted)}
    .check-list li:before{content:"✓";position:absolute;left:16px;top:12px;color:#0b9a9c;font-weight:800;font-size:18px}
    .compare{display:grid;grid-template-columns:1fr 1fr;gap:20px}
    .compare .card{border-top:4px solid var(--blue)}
    .compare .card:last-child{border-top-color:var(--gold)}
    .compare h3{margin-bottom:16px}
    .compare ul{display:grid;gap:10px;color:var(--muted);font-size:14px}
    .compare li{list-style:none;padding-left:22px;position:relative}
    .compare li:before{content:"·";position:absolute;left:5px;color:var(--blue);font-size:25px;line-height:20px}
    .faq{display:grid;grid-template-columns:.75fr 1.25fr;gap:40px}
    .faq-intro p{color:var(--muted);margin-top:12px}
    .faq-list{display:grid;gap:12px}
    .faq-item{padding:19px 22px}
    .faq-item summary{font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:15px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";color:var(--blue)}
    .faq-item[open] summary:after{content:"－"}
    .faq-item p{color:var(--muted);font-size:14px;padding-top:12px}
    .cta{background:linear-gradient(120deg,#eaf4ff,#f8fbff);border:1px solid #d7e8fb;border-radius:28px;padding:42px 48px;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .cta h2{font-size:30px;line-height:1.35;margin-bottom:8px}
    .cta p{color:var(--muted)}
    footer{background:#0b1f3d;color:#fff;padding:54px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:30px}
    footer .brand{margin-bottom:15px}
    footer p,footer li{color:#aebfd7;font-size:13px}
    footer h4{font-size:15px;margin-bottom:14px}
    footer ul{list-style:none;display:grid;gap:8px}
    footer a:hover{color:#8ce5eb}
    .footer-bottom{display:flex;justify-content:space-between;gap:15px;border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:18px;color:#91a8c6;font-size:12px}
    @media(max-width:900px){
      .stats-grid{grid-template-columns:repeat(2,1fr)}
      .risk-grid,.faq{grid-template-columns:1fr}
      .steps{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
      .hero-panel{display:none}
    }
    @media(max-width:640px){
      .container{width:min(100% - 28px,1180px)}
      .topbar{height:68px}
      .top-actions .search,.top-actions .btn{display:none}
      .mobile-toggle{display:block}
      .channels{margin:0 -14px;padding-left:14px;padding-right:14px}
      .inner-hero .container{min-height:370px}
      .hero-copy{padding:58px 0}
      .hero-copy p{font-size:15px}
      section{padding:56px 0}
      .stats-grid,.steps,.principles,.compare{grid-template-columns:1fr}
      .section-head{display:block}
      .section-head p{margin-top:12px}
      .matrix{grid-template-columns:1fr}
      .card{padding:23px}
      .cta{display:block;padding:30px 24px}
      .cta .btn{margin-top:20px;width:100%}
      .footer-grid{grid-template-columns:1fr;gap:24px}
      .footer-bottom{display:block;line-height:2.2}
    }

/* roulang page: category3 */
:root{
      --ink:#10233f;--muted:#667892;--blue:#1f66d1;--blue-deep:#10449a;
      --cyan:#19a7c8;--paper:#f5f8fc;--line:#dfe7f1;--white:#fff;
      --soft:#edf5ff;--gold:#f4b947;--radius:22px;
      --shadow:0 18px 48px rgba(27,65,117,.11);--shadow-sm:0 8px 24px rgba(24,61,112,.08)
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.8;font-size:15px}
    a{text-decoration:none;color:inherit;transition:.25s ease}
    img{display:block;max-width:100%;width:100%;object-fit:cover}
    button,input,textarea{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.95);backdrop-filter:blur(16px);border-bottom:1px solid rgba(223,231,241,.85)}
    .topbar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:21px;letter-spacing:.03em;white-space:nowrap}
    .brand-mark{width:38px;height:38px;border-radius:13px;background:linear-gradient(145deg,#1f76e8,#103c96);display:grid;place-items:center;color:#fff;box-shadow:0 8px 18px rgba(31,102,209,.25);font-size:19px}
    .top-actions{display:flex;align-items:center;gap:13px}
    .search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:#f8fbff;border-radius:12px;padding:8px 13px;color:var(--muted)}
    .search input{border:0;outline:0;background:transparent;width:150px;color:var(--ink)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:12px;font-weight:700;transition:.25s ease}
    .btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(31,102,209,.2)}
    .btn-primary:hover{background:var(--blue-deep);transform:translateY(-2px)}
    .btn-light{background:#edf5ff;color:var(--blue)}
    .btn-light:hover{background:#dcecff}
    .mobile-toggle{display:none;background:var(--soft);color:var(--blue);padding:9px 11px;border-radius:10px}
    .channels{display:flex;align-items:center;gap:8px;overflow-x:auto;padding:10px 0 13px;scrollbar-width:none}
    .channels::-webkit-scrollbar{display:none}
    .channel{white-space:nowrap;padding:8px 15px;border-radius:10px;color:var(--muted);font-size:14px;font-weight:700}
    .channel:hover{background:var(--soft);color:var(--blue)}
    .channel.active{background:var(--blue);color:#fff;box-shadow:0 7px 16px rgba(31,102,209,.18)}
    .hero{min-height:490px;position:relative;display:flex;align-items:center;background:linear-gradient(90deg,rgba(8,31,72,.95),rgba(11,54,116,.78),rgba(12,68,132,.34)),url('/assets/images/backpic/back-2.webp') center/cover}
    .hero-content{padding:76px 0;position:relative;color:#fff;max-width:790px}
    .hero-label{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.1);border-radius:30px;color:#d8edff;font-size:13px}
    .hero h1{font-size:clamp(36px,5vw,64px);line-height:1.16;max-width:760px;margin:22px 0 20px;letter-spacing:-.045em}
    .hero p{max-width:690px;color:#e2edfc;font-size:17px;line-height:2;margin-bottom:28px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero .btn-light{background:#fff;color:var(--blue)}
    .hero .btn-light:hover{background:#e6f2ff}
    .hero-note{margin-top:22px;color:#b8d2f0;font-size:13px}
    .hero-panel{position:absolute;right:5%;bottom:54px;width:265px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);border-radius:20px;padding:20px;backdrop-filter:blur(12px);color:#fff}
    .hero-panel strong{font-size:31px;display:block}
    .hero-panel small{color:#c5ddf7}
    section{padding:76px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}
    .section-head h2{font-size:clamp(25px,3vw,38px);line-height:1.3;letter-spacing:-.03em}
    .eyebrow{font-size:12px;color:var(--blue);font-weight:800;letter-spacing:.14em;text-transform:uppercase;margin-bottom:10px}
    .section-head p{max-width:520px;color:var(--muted)}
    .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .stat-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:25px;box-shadow:var(--shadow-sm)}
    .stat-card strong{display:block;color:var(--blue);font-size:30px;line-height:1.2;margin-bottom:8px}
    .stat-card span{color:var(--muted);font-size:13px}
    .stat-card em{display:block;color:#078897;font-style:normal;font-size:12px;margin-top:10px}
    .intro-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:stretch}
    .intro-copy{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:35px;box-shadow:var(--shadow-sm)}
    .intro-copy h2{font-size:30px;line-height:1.35;margin-bottom:18px}
    .intro-copy p{color:var(--muted);margin-bottom:15px}
    .quote-box{margin-top:23px;padding:18px 20px;border-left:4px solid var(--cyan);background:#f1fbfd;color:#23536e;border-radius:0 14px 14px 0}
    .intro-image{position:relative;overflow:hidden;border-radius:var(--radius);min-height:350px;box-shadow:var(--shadow)}
    .intro-image img{height:100%}
    .image-caption{position:absolute;bottom:0;left:0;right:0;padding:22px;color:#fff;background:linear-gradient(transparent,rgba(6,28,63,.88));font-weight:700}
    .matrix-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:25px}
    .dark-panel{background:#0e2851;color:#fff;border-radius:var(--radius);padding:32px}
    .dark-panel h3{font-size:24px;margin-bottom:12px}
    .dark-panel p{color:#b9cbe2}
    .dark-panel ul{list-style:none;margin-top:22px;display:grid;gap:13px}
    .dark-panel li{display:flex;gap:10px;color:#dce9f8}
    .dark-panel li b{color:#76dce3}
    .factor-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}
    .factor{background:#fff;border:1px solid var(--line);border-radius:17px;padding:22px;box-shadow:var(--shadow-sm);transition:.25s}
    .factor:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .factor-icon{width:39px;height:39px;border-radius:12px;background:var(--soft);color:var(--blue);display:grid;place-items:center;font-weight:800;margin-bottom:15px}
    .factor h3{font-size:17px;margin-bottom:7px}
    .factor p{font-size:13px;color:var(--muted)}
    .process-section{background:#fff}
    .process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:var(--shadow-sm)}
    .process-step{padding:28px 23px;border-right:1px solid var(--line);position:relative}
    .process-step:last-child{border-right:0}
    .step-number{font-size:12px;color:var(--blue);font-weight:800;letter-spacing:.1em}
    .process-step h3{font-size:18px;margin:21px 0 9px}
    .process-step p{color:var(--muted);font-size:13px}
    .compare-layout{display:grid;grid-template-columns:1fr .95fr;gap:28px;align-items:center}
    .compare-image{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);min-height:320px}
    .compare-image img{height:100%}
    .compare-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-sm)}
    .compare-row{display:grid;grid-template-columns:105px 1fr 55px;gap:12px;align-items:center;margin:20px 0;color:var(--muted);font-size:13px}
    .bar{height:9px;background:#edf2f8;border-radius:20px;overflow:hidden}
    .bar i{display:block;height:100%;border-radius:20px;background:linear-gradient(90deg,var(--cyan),var(--blue))}
    .compare-tip{margin-top:23px;padding:15px;background:#fff8e8;border:1px solid #f4dfaa;border-radius:13px;color:#7b5b18;font-size:13px}
    .scene-band{background:#0e2851;color:#fff}
    .scene-band .section-head p{color:#b5c9e5}
    .scene-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:25px;align-items:stretch}
    .scene-list{display:grid;gap:12px}
    .scene-item{background:#163763;border:1px solid rgba(255,255,255,.12);border-radius:17px;padding:20px}
    .scene-item b{display:block;color:#8ce5eb;margin-bottom:5px}
    .scene-item span{color:#c2d2e7;font-size:14px}
    .scene-image{border-radius:22px;overflow:hidden;min-height:290px}
    .scene-image img{height:100%;opacity:.85}
    .check-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .check-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--shadow-sm)}
    .check-card h3{font-size:18px;margin-bottom:15px}
    .check-card ul{list-style:none;display:grid;gap:10px}
    .check-card li{color:var(--muted);font-size:14px;padding-left:23px;position:relative}
    .check-card li:before{content:"✓";position:absolute;left:0;color:#078897;font-weight:800}
    .faq{display:grid;grid-template-columns:.75fr 1.25fr;gap:40px}
    .faq-intro p{color:var(--muted);margin-top:14px}
    .faq-list{display:grid;gap:12px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:19px 22px}
    .faq-item summary{font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:20px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";color:var(--blue);font-size:20px;line-height:1}
    .faq-item[open] summary:after{content:"－"}
    .faq-item p{color:var(--muted);font-size:14px;padding-top:13px}
    .cta{padding:72px 0;background:linear-gradient(110deg,#eaf4ff,#f6fbff)}
    .cta-box{display:flex;align-items:center;justify-content:space-between;gap:30px;background:#fff;border:1px solid #d7e7f8;border-radius:25px;padding:35px 42px;box-shadow:var(--shadow)}
    .cta-box h2{font-size:29px;line-height:1.35;margin-bottom:10px}
    .cta-box p{color:var(--muted);max-width:650px}
    .cta-actions{display:flex;gap:10px;flex-wrap:wrap;flex-shrink:0}
    footer{background:#0b1f3c;color:#d5e1f0;padding:54px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.35fr .8fr .8fr 1fr;gap:35px}
    footer .brand{color:#fff;margin-bottom:15px}
    footer .brand-mark{box-shadow:none}
    footer p{color:#9db2cc;font-size:13px}
    footer h4{color:#fff;margin-bottom:14px;font-size:15px}
    footer ul{list-style:none;display:grid;gap:9px}
    footer li a{color:#9db2cc;font-size:13px}
    footer li a:hover,footer a:hover{color:#fff}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:20px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:#8ea5c0;font-size:12px}
    .footer-bottom a{color:#b9cbe0}
    .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
    :focus-visible{outline:3px solid rgba(25,167,200,.5);outline-offset:3px}
    @media(max-width:1024px){
      .hero-panel{right:3%;width:220px}
      .stats-grid{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(100% - 28px,620px)}
      .topbar{height:68px}
      .top-actions .search,.top-actions>.btn{display:none}
      .mobile-toggle{display:block}
      .channels{padding-top:8px;padding-bottom:10px}
      .hero{min-height:620px}
      .hero-content{padding:60px 0}
      .hero-panel{position:relative;right:auto;bottom:auto;margin-top:30px;width:100%;max-width:300px}
      .hero p{font-size:15px}
      section{padding:58px 0}
      .section-head{display:block;margin-bottom:24px}
      .section-head p{margin-top:12px}
      .intro-grid,.matrix-layout,.compare-layout,.scene-grid,.faq{grid-template-columns:1fr}
      .process-grid{grid-template-columns:1fr 1fr}
      .process-step:nth-child(2){border-right:0}
      .process-step:nth-child(-n+2){border-bottom:1px solid var(--line)}
      .compare-image{min-height:240px}
      .cta-box{display:block;padding:28px}
      .cta-actions{margin-top:22px}
    }
    @media(max-width:520px){
      body{font-size:14px}
      .brand{font-size:18px}
      .brand-mark{width:34px;height:34px}
      .hero h1{font-size:38px}
      .stats-grid,.factor-grid,.check-grid,.process-grid{grid-template-columns:1fr}
      .process-step{border-right:0!important;border-bottom:1px solid var(--line)!important}
      .process-step:last-child{border-bottom:0!important}
      .intro-copy,.compare-card,.dark-panel{padding:24px}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-bottom:10px}
    }