/* roulang page: index */
:root{
      --blue:#2563a6;
      --blue-deep:#174b80;
      --blue-soft:#eaf3fb;
      --mist:#f4f8fc;
      --warm:#fbfcfe;
      --ink:#1b2b3d;
      --muted:#6d8094;
      --line:#dfe8f1;
      --teal:#4c9ca0;
      --lavender:#827fa9;
      --white:#fff;
      --radius:16px;
      --shadow:0 14px 38px rgba(32,77,119,.09);
      --shadow-hover:0 18px 44px rgba(32,77,119,.16);
      --transition:200ms ease;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      background:var(--warm);
      color:var(--ink);
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      line-height:1.7;
      font-size:15px;
    }
    a{color:inherit;text-decoration:none;transition:var(--transition)}
    img{display:block;max-width:100%}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer;border:0}
    :focus-visible{outline:3px solid rgba(37,99,166,.28);outline-offset:3px}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .site-header{
      position:relative;z-index:10;
      height:70px;background:rgba(255,255,255,.94);
      border-bottom:1px solid var(--line);
    }
    .nav{height:70px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:12px;min-width:max-content}
    .brand-mark{
      width:36px;height:36px;border-radius:10px;background:var(--blue);
      color:#fff;display:grid;place-items:center;font-size:18px;font-weight:800;
      box-shadow:0 6px 14px rgba(37,99,166,.2)
    }
    .brand-text{font-size:17px;font-weight:800;letter-spacing:.02em}
    .brand-sub{display:block;color:var(--muted);font-size:10px;line-height:1.2;font-weight:500}
    .nav-main{display:flex;align-items:center;gap:5px;flex:1}
    .nav-link{padding:8px 13px;border-radius:8px;color:#536b82;font-weight:600}
    .nav-link:hover,.nav-link.active{background:var(--blue-soft);color:var(--blue)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .search-box{display:flex;align-items:center;border:1px solid var(--line);border-radius:9px;background:#fff;padding:0 10px}
    .search-box input{width:120px;border:0;outline:0;padding:8px 4px;color:var(--ink);background:transparent}
    .search-box button{background:none;color:var(--blue);font-size:17px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      min-height:42px;padding:0 18px;border-radius:9px;font-weight:700;
      transition:var(--transition);border:1px solid transparent
    }
    .btn-primary{background:var(--blue);color:#fff;box-shadow:0 7px 16px rgba(37,99,166,.18)}
    .btn-primary:hover{background:var(--blue-deep);transform:translateY(-2px);box-shadow:0 10px 20px rgba(37,99,166,.25)}
    .btn-light{background:var(--blue-soft);color:var(--blue)}
    .btn-light:hover{background:#dcecf9;transform:translateY(-1px)}
    .btn-outline{border-color:#b9ccdd;color:var(--blue);background:#fff}
    .btn-outline:hover{background:var(--blue-soft);border-color:var(--blue)}
    .menu-toggle{display:none;background:none;color:var(--blue);font-size:25px}
    .hero{padding:68px 0 76px;background:linear-gradient(105deg,#f7fbff 0%,#eef6fc 58%,#f5f3fa 100%);border-bottom:1px solid var(--line)}
    .hero-grid{display:grid;grid-template-columns:1.02fr .98fr;align-items:center;gap:64px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.08em;margin-bottom:18px}
    .eyebrow:before{content:"";width:24px;height:2px;background:var(--blue)}
    h1{font-size:clamp(36px,5vw,62px);line-height:1.16;letter-spacing:-.04em;margin-bottom:22px;max-width:650px}
    .hero-copy{font-size:17px;color:#5f7286;max-width:590px;margin-bottom:28px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:30px}
    .hero-meta{display:flex;gap:22px;flex-wrap:wrap;color:var(--muted);font-size:13px}
    .hero-meta strong{display:block;color:var(--blue-deep);font-size:20px;line-height:1.3}
    .hero-stage{position:relative;min-height:350px}
    .stage-main{
      min-height:300px;border-radius:22px;background:#fff;border:1px solid #dbe8f3;
      box-shadow:var(--shadow);padding:28px;position:relative;overflow:hidden;
    }
    .stage-main:after{content:"";position:absolute;width:210px;height:210px;border-radius:50%;right:-70px;top:-70px;background:#e7f2fb}
    .stage-label{position:relative;z-index:1;display:flex;justify-content:space-between;color:var(--muted);font-size:12px}
    .stage-title{position:relative;z-index:1;margin-top:55px;font-size:30px;line-height:1.3;max-width:330px}
    .stage-title em{font-style:normal;color:var(--blue)}
    .stage-lines{display:flex;gap:7px;margin-top:24px}
    .stage-lines i{height:5px;border-radius:8px;background:#cfe3f3;width:48px}
    .stage-lines i:first-child{background:var(--blue);width:82px}
    .stage-note{margin-top:32px;color:var(--muted);font-size:13px}
    .float-card{position:absolute;right:-20px;bottom:-25px;background:#fff;padding:17px 20px;border-radius:13px;border:1px solid var(--line);box-shadow:var(--shadow);width:190px}
    .float-card b{display:block;color:var(--blue-deep);font-size:22px}
    .float-card span{font-size:12px;color:var(--muted)}
    .section{padding:92px 0}
    .section-soft{background:var(--mist)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px}
    .section-kicker{color:var(--blue);font-weight:800;font-size:12px;letter-spacing:.12em;margin-bottom:8px}
    h2{font-size:clamp(26px,3vw,38px);line-height:1.25;letter-spacing:-.025em}
    .section-intro{max-width:550px;color:var(--muted);font-size:15px}
    .channel-grid{display:grid;grid-template-columns:1.3fr .85fr .85fr;gap:18px}
    .channel-card,.topic-card,.step,.quote,.faq-item,.contact-card{
      background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
      transition:var(--transition)
    }
    .channel-card{padding:28px;min-height:220px;display:flex;flex-direction:column;justify-content:space-between}
    .channel-card:first-child{background:#edf6fd;border-color:#cfe4f4}
    .channel-card:hover,.topic-card:hover,.quote:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#b9d3e8}
    .tag{display:inline-flex;width:max-content;padding:4px 9px;border-radius:6px;background:var(--blue-soft);color:var(--blue);font-size:12px;font-weight:800}
    .tag.teal{background:#e8f5f4;color:#347d80}.tag.purple{background:#f0eff8;color:#68658f}
    .card-title{font-size:22px;line-height:1.35;margin:16px 0 8px}
    .card-text{color:var(--muted);font-size:14px}
    .card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:20px;color:var(--blue);font-size:13px;font-weight:700}
    .stats{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow)}
    .stat{padding:28px 24px;border-right:1px solid var(--line)}
    .stat:last-child{border-right:0}.stat strong{display:block;font-size:32px;color:var(--blue-deep);line-height:1.2}.stat span{display:block;margin-top:8px;color:var(--muted);font-size:13px}
    .feature-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:20px}
    .feature-main{min-height:330px;padding:32px;border-radius:var(--radius);background:linear-gradient(135deg,#24629f,#4d83b6);color:#fff;position:relative;overflow:hidden}
    .feature-main:after{content:"";position:absolute;right:-60px;bottom:-80px;width:280px;height:280px;border:34px solid rgba(255,255,255,.13);border-radius:50%}
    .feature-main .tag{background:rgba(255,255,255,.18);color:#fff}.feature-main h3{font-size:31px;max-width:440px;line-height:1.3;margin:46px 0 14px;position:relative;z-index:1}.feature-main p{max-width:460px;color:#e5f1fb;position:relative;z-index:1}
    .feature-list{display:grid;gap:14px}.topic-card{padding:22px}.topic-card h3{font-size:18px;margin:12px 0 5px}.topic-card p{font-size:13px;color:var(--muted)}.topic-meta{font-size:12px;color:var(--blue);font-weight:700}
    .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.step{padding:26px;position:relative}.step-num{width:34px;height:34px;border-radius:9px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:800}.step h3{font-size:19px;margin:18px 0 8px}.step p{color:var(--muted);font-size:14px}
    .reviews{display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;align-items:start}.rating{font-size:56px;font-weight:800;color:var(--blue-deep);line-height:1}.stars{color:#e19b4c;letter-spacing:3px;margin:12px 0}.rating p{font-size:14px;color:var(--muted);max-width:260px}.quote-list{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.quote{padding:22px}.quote p{font-size:14px;color:#536b82}.quote b{display:block;margin-top:15px;color:var(--blue);font-size:13px}
    .faq-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:50px}.faq-list{display:grid;gap:10px}.faq-item{box-shadow:none;overflow:hidden}.faq-q{width:100%;padding:19px 22px;display:flex;justify-content:space-between;align-items:center;text-align:left;background:#fff;color:var(--ink);font-weight:700}.faq-q span{color:var(--blue);font-size:20px}.faq-a{max-height:0;overflow:hidden;padding:0 22px;color:var(--muted);font-size:14px;transition:max-height .25s ease,padding .25s ease}.faq-item.open .faq-a{max-height:150px;padding:0 22px 20px}.faq-item.open .faq-q{background:var(--blue-soft)}
    .contact{background:#eaf3fb}.contact-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:50px}.contact-copy p{color:var(--muted);margin:14px 0 22px}.contact-points{display:grid;gap:10px;color:#557087;font-size:14px}.contact-points span{color:var(--blue);font-weight:800;margin-right:7px}.form-card{background:#fff;padding:28px;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.field{display:grid;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:13px;font-weight:700;color:#4a6278}.field input,.field select,.field textarea{width:100%;border:1px solid #cfdce8;border-radius:8px;padding:11px 12px;background:#fbfdff;color:var(--ink);outline:none}.field textarea{min-height:105px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(37,99,166,.1)}.form-tip{font-size:12px;color:var(--muted);margin-top:12px}.form-message{display:none;margin-top:13px;color:#347d80;font-size:13px}
    .site-footer{background:#203b57;color:#dbe8f3;padding:52px 0 22px}.footer-grid{display:grid;grid-template-columns:1.3fr .8fr .9fr .9fr;gap:35px}.footer-brand{color:#fff;font-size:18px;font-weight:800}.footer-grid h3{font-size:14px;color:#fff;margin-bottom:15px}.footer-grid a{display:block;color:#a9bfd1;font-size:13px;margin:8px 0}.footer-grid a:hover{color:#fff}.footer-note{color:#a9bfd1;font-size:13px;max-width:270px;margin-top:12px}.copyright{border-top:1px solid rgba(255,255,255,.14);margin-top:35px;padding-top:18px;color:#9bb2c7;font-size:12px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
    .age-overlay{position:fixed;inset:0;background:rgba(24,47,70,.48);z-index:30;display:flex;align-items:center;justify-content:center;padding:20px}.age-modal{width:min(460px,100%);background:#fff;border-radius:18px;padding:32px;box-shadow:0 24px 70px rgba(17,45,70,.25);text-align:center}.age-modal h2{font-size:25px}.age-modal p{color:var(--muted);font-size:14px;margin:12px 0 23px}.age-actions{display:flex;justify-content:center;gap:10px}.hidden{display:none!important}.top-btn{position:fixed;right:22px;bottom:22px;width:42px;height:42px;border-radius:10px;background:var(--blue);color:#fff;display:none;z-index:8}.top-btn.show{display:block}
    @media(max-width:1024px){.hero-grid{gap:35px}.nav-main{gap:0}.nav-link{padding:8px 8px}.channel-grid{grid-template-columns:1fr 1fr}.channel-card:first-child{grid-column:1/-1}.feature-grid,.reviews,.contact-layout{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.container{width:min(100% - 30px,600px)}.site-header,.nav{height:62px}.nav-main,.nav-actions .btn,.search-box{display:none}.menu-toggle{display:block}.nav{gap:12px}.brand-text{font-size:15px}.hero{padding:48px 0 54px}.hero-grid{grid-template-columns:1fr}.hero-stage{min-height:300px}.stage-main{min-height:270px}.section{padding:62px 0}.section-head{display:block}.section-intro{margin-top:10px}.stats{grid-template-columns:1fr 1fr}.stat{border-bottom:1px solid var(--line)}.stat:nth-child(2){border-right:0}.stat:nth-child(3),.stat:nth-child(4){border-bottom:0}.steps{grid-template-columns:1fr}.faq-layout{grid-template-columns:1fr;gap:25px}.footer-grid{grid-template-columns:1fr 1fr}.mobile-panel{display:none;position:absolute;top:62px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:14px 15px;box-shadow:var(--shadow)}.mobile-panel.open{display:block}.mobile-panel .nav-link{display:block;margin:3px 0}.mobile-panel .btn{width:100%;margin-top:10px}}
    @media(max-width:520px){h1{font-size:36px}.hero-copy{font-size:15px}.hero-actions .btn{width:100%}.channel-grid,.quote-list{grid-template-columns:1fr}.channel-card:first-child{grid-column:auto}.float-card{right:-5px}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin-top:7px}}

/* roulang page: category1 */
:root{
 --blue:#2563a6;
 --blue-deep:#174b80;
 --blue-soft:#eaf3fb;
 --mist:#f4f8fc;
 --warm:#fbfcfe;
 --ink:#1b2b3d;
 --muted:#6d8094;
 --line:#dfe8f1;
 --teal:#4c9ca0;
 --lavender:#827fa9;
 --white:#fff;
 --radius:16px;
 --shadow:0 14px 38px rgba(32,77,119,.09);
 --shadow-hover:0 18px 44px rgba(32,77,119,.16);
 --transition:200ms ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;background:var(--warm);color:var(--ink);
 font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
 font-size:15px;line-height:1.7;
}
a{text-decoration:none;color:inherit;transition:var(--transition)}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit}
button{cursor:pointer;border:0}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
 outline:3px solid rgba(37,99,166,.28);outline-offset:3px
}
.container{width:min(1180px,calc(100% - 40px));margin:auto}
.site-header{height:70px;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:relative;z-index:10}
.nav{height:70px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:center;gap:12px;min-width:max-content}
.brand-mark{
 width:36px;height:36px;border-radius:10px;background:var(--blue);color:#fff;
 display:grid;place-items:center;font-size:18px;font-weight:800;box-shadow:0 6px 14px rgba(37,99,166,.2)
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:.02em}
.brand-sub{display:block;color:var(--muted);font-size:10px;line-height:1.2;font-weight:500}
.nav-main{display:flex;align-items:center;gap:5px;flex:1}
.nav-link{padding:8px 13px;border-radius:8px;color:#536b82;font-weight:600}
.nav-link:hover,.nav-link.active{background:var(--blue-soft);color:var(--blue)}
.nav-actions{display:flex;align-items:center;gap:10px}
.search-box{display:flex;align-items:center;border:1px solid var(--line);border-radius:9px;background:#fff;padding:0 10px}
.search-box input{width:120px;border:0;outline:0;padding:8px 4px;color:var(--ink);background:transparent}
.search-box button{background:none;color:var(--blue);font-size:17px}
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:42px;
 padding:0 18px;border-radius:9px;font-weight:700;transition:var(--transition);border:1px solid transparent
}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 7px 16px rgba(37,99,166,.18)}
.btn-primary:hover{background:var(--blue-deep);transform:translateY(-2px);box-shadow:0 10px 20px rgba(37,99,166,.25)}
.btn-light{background:var(--blue-soft);color:var(--blue)}
.btn-light:hover{background:#dcecf9;transform:translateY(-1px)}
.btn-outline{border-color:#b9ccdd;color:var(--blue);background:#fff}
.btn-outline:hover{background:var(--blue-soft);border-color:var(--blue)}
.menu-toggle{display:none;background:none;color:var(--blue);font-size:25px}
.page-hero{padding:58px 0 42px;background:linear-gradient(110deg,#f7fbff,#eef6fc 62%,#f3f1f9);border-bottom:1px solid var(--line)}
.breadcrumb{color:var(--muted);font-size:13px;margin-bottom:24px}
.breadcrumb a{color:var(--blue)}
.hero-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:end}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.08em;margin-bottom:14px}
.eyebrow:before{content:"";width:24px;height:2px;background:var(--blue)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(32px,4.5vw,54px);line-height:1.18;letter-spacing:-.04em;margin-bottom:18px}
h2{font-size:30px;line-height:1.3;margin-bottom:10px}
h3{line-height:1.4}
.hero-copy{font-size:17px;color:#5f7286;max-width:680px;margin-bottom:24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-panel{background:#fff;border:1px solid #d8e7f2;border-radius:18px;padding:24px;box-shadow:var(--shadow)}
.panel-top{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:13px}
.panel-number{font-size:46px;line-height:1;color:var(--blue-deep);font-weight:800;margin:24px 0 6px}
.panel-note{color:var(--muted);font-size:13px}
.progress{height:7px;background:#e7f0f7;border-radius:8px;margin:20px 0 13px;overflow:hidden}
.progress i{display:block;width:76%;height:100%;background:var(--blue);border-radius:8px}
.panel-tags{display:flex;gap:7px;flex-wrap:wrap}
.tag{display:inline-flex;width:max-content;padding:4px 9px;border-radius:6px;background:var(--blue-soft);color:var(--blue);font-size:12px;font-weight:800}
.tag.teal{background:#e8f5f4;color:#347d80}
.tag.purple{background:#f0eff8;color:#68658f}
.section{padding:82px 0}
.section-soft{background:var(--mist)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px}
.section-kicker{color:var(--blue);font-weight:800;font-size:12px;letter-spacing:.12em;margin-bottom:8px}
.section-intro{max-width:570px;color:var(--muted)}
.filter-bar{
 display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:#fff;border:1px solid var(--line);
 border-radius:13px;padding:13px 15px;box-shadow:0 8px 22px rgba(32,77,119,.05);margin-bottom:28px
}
.filter-label{font-size:13px;font-weight:800;color:var(--ink);margin-right:4px}
.filter-btn{background:#f5f8fb;color:#60758a;border:1px solid transparent;border-radius:8px;padding:7px 13px;transition:var(--transition)}
.filter-btn:hover,.filter-btn.active{background:var(--blue-soft);color:var(--blue);border-color:#c9dfef}
.filter-clear{margin-left:auto;color:var(--muted);font-size:13px;background:none;padding:7px}
.filter-clear:hover{color:var(--blue)}
.feature-strip{display:grid;grid-template-columns:1.4fr .6fr;gap:18px;margin-bottom:32px}
.feature-card,.content-card,.step-card,.faq-item,.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:var(--transition)}
.feature-card:hover,.content-card:hover,.step-card:hover,.contact-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#b9d3e8}
.feature-card{min-height:245px;padding:30px;background:linear-gradient(135deg,#24629f,#4d83b6);color:#fff;position:relative;overflow:hidden}
.feature-card:after{content:"";position:absolute;width:260px;height:260px;border-radius:50%;right:-80px;top:-100px;background:rgba(255,255,255,.11)}
.feature-card>*{position:relative;z-index:1}
.feature-card .tag{background:rgba(255,255,255,.16);color:#fff}
.feature-card h3{font-size:27px;max-width:560px;margin:20px 0 8px}
.feature-card p{color:#e4f0fa;max-width:570px}
.feature-side{padding:26px;background:#edf6fd;border-color:#cfe4f4}
.feature-side strong{display:block;font-size:30px;color:var(--blue-deep);margin:20px 0 4px}
.feature-side span{font-size:13px;color:var(--muted)}
.content-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.content-card{display:grid;grid-template-columns:170px 1fr;min-height:168px;overflow:hidden}
.cover{min-height:100%;background:linear-gradient(145deg,#d9ebf7,#91b9d5 55%,#e9e7f3);position:relative}
.cover:before{content:"";position:absolute;inset:22px;border:1px solid rgba(255,255,255,.8);border-radius:12px}
.cover.two{background:linear-gradient(145deg,#e6edf7,#9ca8ca,#dceff0)}
.cover.three{background:linear-gradient(145deg,#e4f2f0,#83b8b5,#dfe8f5)}
.cover.four{background:linear-gradient(145deg,#ece8f5,#aaa6c9,#d7e9f4)}
.card-body{padding:20px}
.card-meta{display:flex;align-items:center;justify-content:space-between;gap:8px;color:var(--muted);font-size:12px}
.content-card h3{font-size:19px;margin:12px 0 6px}
.content-card p{color:var(--muted);font-size:13px;line-height:1.6;margin-bottom:13px}
.card-link{color:var(--blue);font-size:13px;font-weight:800}
.card-link:hover{text-decoration:underline}
.empty-state{display:none;text-align:center;padding:44px 20px;border:1px dashed #b9ccdd;border-radius:14px;color:var(--muted);background:#fff}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.stat{padding:24px;background:#fff;border:1px solid var(--line);border-radius:14px}
.stat b{display:block;color:var(--blue-deep);font-size:32px;line-height:1.2;margin-bottom:5px}
.stat span{font-size:13px;color:var(--muted)}
.path-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.step-card{padding:25px}
.step-no{width:32px;height:32px;border-radius:9px;background:var(--blue-soft);color:var(--blue);display:grid;place-items:center;font-weight:800}
.step-card h3{font-size:19px;margin:18px 0 7px}
.step-card p{color:var(--muted);font-size:14px;margin-bottom:0}
.faq-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:55px;align-items:start}
.faq-list{display:grid;gap:10px}
.faq-item{overflow:hidden;box-shadow:none}
.faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left;padding:19px 20px;background:#fff;color:var(--ink);font-weight:700}
.faq-question span:last-child{color:var(--blue);font-size:21px;line-height:1;transition:var(--transition)}
.faq-answer{display:none;padding:0 20px 19px;color:var(--muted);font-size:14px}
.faq-item.open{background:var(--blue-soft);border-color:#c9dfef}
.faq-item.open .faq-question{background:transparent;color:var(--blue-deep)}
.faq-item.open .faq-answer{display:block}
.faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
.cta{padding:35px 40px;background:#edf6fd;border:1px solid #cfe4f4;border-radius:18px;display:flex;justify-content:space-between;align-items:center;gap:25px}
.cta p{color:var(--muted);margin:7px 0 0}
.site-footer{background:#eef4f9;border-top:1px solid var(--line);padding:52px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .9fr .9fr;gap:30px}
.footer-brand{font-size:18px;font-weight:800;color:var(--blue-deep);margin-bottom:10px}
.footer-note{color:var(--muted);font-size:13px;max-width:270px}
.footer-grid h3{font-size:14px;margin:0 0 14px;color:var(--ink)}
.footer-grid a{display:block;color:var(--muted);font-size:13px;margin:7px 0}
.footer-grid a:hover{color:var(--blue);padding-left:3px}
.copyright{border-top:1px solid var(--line);margin-top:35px;padding-top:17px;display:flex;justify-content:space-between;gap:15px;color:var(--muted);font-size:12px}
.age-overlay{position:fixed;inset:0;background:rgba(27,43,61,.38);z-index:30;display:flex;align-items:center;justify-content:center;padding:20px}
.age-overlay.hidden{display:none}
.age-card{width:min(440px,100%);background:#fff;border-radius:18px;padding:30px;box-shadow:0 24px 70px rgba(20,53,84,.25)}
.age-card h2{font-size:24px;margin-bottom:10px}
.age-card p{color:var(--muted);font-size:14px}
.age-actions{display:flex;gap:10px;margin-top:22px}
@media(max-width:1024px){
 .nav-main{gap:0}.nav-link{padding:8px 8px}.hero-layout{gap:28px}
 .content-card{grid-template-columns:135px 1fr}
}
@media(max-width:768px){
 .container{width:min(100% - 30px,620px)}
 .site-header,.nav{height:64px}.nav-main,.nav-actions .search-box,.nav-actions .btn{display:none}
 .nav-actions{margin-left:auto}.menu-toggle{display:block}
 .nav.open{position:relative}.nav.open .nav-main{display:flex;position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--line);padding:10px;box-shadow:var(--shadow);border-radius:0 0 12px 12px}
 .nav.open .nav-link{padding:12px}.nav.open .nav-actions{display:flex;position:absolute;top:215px;left:0;right:0;background:#fff;border:1px solid var(--line);padding:12px;box-shadow:var(--shadow)}
 .page-hero{padding:42px 0 34px}.hero-layout{grid-template-columns:1fr;gap:25px}h1{font-size:36px}
 .section{padding:58px 0}.section-head{display:block}.section-intro{margin-top:10px}
 .feature-strip,.faq-layout{grid-template-columns:1fr}.content-grid,.path-grid{grid-template-columns:1fr}
 .stats{grid-template-columns:repeat(2,1fr)}.filter-bar{overflow-x:auto;flex-wrap:nowrap}.filter-label{white-space:nowrap}.filter-clear{margin-left:0;white-space:nowrap}
 .cta{display:block;padding:28px 24px}.cta .btn{margin-top:20px}
 .footer-grid{grid-template-columns:repeat(2,1fr)}.copyright{display:block}.copyright span{display:block;margin-bottom:7px}
}
@media(max-width:520px){
 .brand-text{font-size:14px}.brand-sub{font-size:9px}.content-card{grid-template-columns:112px 1fr}
 .card-body{padding:16px}.content-card h3{font-size:17px}.content-card p{font-size:12px}
 .stats{gap:10px}.stat{padding:18px 15px}.stat b{font-size:27px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:20px}.footer-grid>div:first-child{grid-column:1/-1}
 .age-actions{flex-direction:column}
}

/* roulang page: category2 */
:root{
 --blue:#2563a6;
 --blue-deep:#174b80;
 --blue-soft:#eaf3fb;
 --mist:#f4f8fc;
 --warm:#fbfcfe;
 --ink:#1b2b3d;
 --muted:#6d8094;
 --line:#dfe8f1;
 --teal:#4c9ca0;
 --lavender:#827fa9;
 --white:#fff;
 --radius:16px;
 --shadow:0 14px 38px rgba(32,77,119,.09);
 --shadow-hover:0 18px 44px rgba(32,77,119,.16);
 --transition:200ms ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;background:var(--warm);color:var(--ink);
 font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
 line-height:1.7;font-size:15px
}
h1,h2,h3,p{margin:0}
a{color:inherit;text-decoration:none;transition:var(--transition)}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit}
button{cursor:pointer;border:0}
.container{width:min(1180px,calc(100% - 40px));margin:auto}
.site-header{
 position:relative;z-index:20;height:70px;background:rgba(255,255,255,.96);
 border-bottom:1px solid var(--line)
}
.nav{height:70px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:center;gap:12px;min-width:max-content}
.brand-mark{
 width:36px;height:36px;border-radius:10px;background:var(--blue);color:#fff;
 display:grid;place-items:center;font-size:18px;font-weight:800;
 box-shadow:0 6px 14px rgba(37,99,166,.2)
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:.02em}
.brand-sub{display:block;color:var(--muted);font-size:10px;line-height:1.2;font-weight:500}
.nav-main{display:flex;align-items:center;gap:5px;flex:1}
.nav-link{padding:8px 13px;border-radius:8px;color:#536b82;font-weight:600}
.nav-link:hover,.nav-link.active{background:var(--blue-soft);color:var(--blue)}
.nav-actions{display:flex;align-items:center;gap:10px}
.search-box{
 display:flex;align-items:center;border:1px solid var(--line);border-radius:9px;
 background:#fff;padding:0 10px
}
.search-box input{width:120px;border:0;outline:0;padding:8px 4px;color:var(--ink);background:transparent}
.search-box button{background:none;color:var(--blue);font-size:17px}
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:42px;
 padding:0 18px;border-radius:9px;font-weight:700;transition:var(--transition);
 border:1px solid transparent
}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 7px 16px rgba(37,99,166,.18)}
.btn-primary:hover{background:var(--blue-deep);transform:translateY(-2px);box-shadow:0 10px 20px rgba(37,99,166,.25)}
.btn-light{background:var(--blue-soft);color:var(--blue)}
.btn-light:hover{background:#dcecf9;transform:translateY(-1px)}
.btn-outline{border-color:#b9ccdd;color:var(--blue);background:#fff}
.btn-outline:hover{background:var(--blue-soft);border-color:var(--blue)}
.menu-toggle{display:none;background:none;color:var(--blue);font-size:25px}
.page-hero{
 padding:65px 0 58px;background:linear-gradient(105deg,#f7fbff 0%,#eef6fc 58%,#f5f3fa 100%);
 border-bottom:1px solid var(--line)
}
.hero-layout{display:grid;grid-template-columns:1fr 360px;gap:60px;align-items:end}
.crumbs{display:flex;gap:9px;color:var(--muted);font-size:13px;margin-bottom:25px}
.crumbs a:hover{color:var(--blue)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.08em;margin-bottom:16px}
.eyebrow:before{content:"";width:24px;height:2px;background:var(--blue)}
.page-title{font-size:clamp(32px,5vw,54px);line-height:1.2;letter-spacing:-.03em;margin-bottom:18px}
.page-title em{font-style:normal;color:var(--blue)}
.page-intro{max-width:690px;color:#60758a;font-size:17px}
.hero-note{
 background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;
 box-shadow:var(--shadow);position:relative;overflow:hidden
}
.hero-note:before{content:"";position:absolute;right:-35px;top:-45px;width:130px;height:130px;background:#e7f2fb;border-radius:50%}
.note-label{position:relative;color:var(--blue);font-size:12px;font-weight:800}
.note-number{position:relative;font-size:36px;font-weight:800;color:var(--blue-deep);line-height:1.2;margin:12px 0 4px}
.note-text{position:relative;color:var(--muted);font-size:13px}
.section{padding:78px 0}
.section-soft{background:var(--mist)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px}
.section-kicker{color:var(--blue);font-weight:800;font-size:12px;letter-spacing:.12em;margin-bottom:7px}
.section-title{font-size:30px;line-height:1.3}
.section-intro{max-width:570px;color:var(--muted)}
.filter-bar{
 display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:15px;
 background:#fff;border:1px solid var(--line);border-radius:13px;box-shadow:var(--shadow);margin-bottom:28px
}
.filter-label{font-size:13px;color:var(--muted);font-weight:700;margin-right:3px}
.filter-btn{
 background:#f5f8fb;color:#63778b;border:1px solid transparent;border-radius:8px;
 padding:8px 14px;font-size:13px;transition:var(--transition)
}
.filter-btn:hover,.filter-btn.active{background:var(--blue-soft);color:var(--blue);border-color:#c9dfef}
.filter-clear{margin-left:auto;color:var(--blue);font-size:13px;background:none;padding:8px}
.content-layout{display:grid;grid-template-columns:245px 1fr;gap:25px;align-items:start}
.filter-panel{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)
}
.filter-panel h3{font-size:17px;margin-bottom:18px}
.filter-group{padding:17px 0;border-top:1px solid var(--line)}
.filter-group:first-of-type{border-top:0;padding-top:0}
.filter-group strong{display:block;font-size:13px;margin-bottom:10px}
.check-row{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:13px;margin:9px 0}
.check-row input{accent-color:var(--blue)}
.result-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:15px;color:var(--muted);font-size:13px}
.sort-select{border:1px solid var(--line);background:#fff;color:var(--ink);padding:8px 10px;border-radius:8px;outline:none}
.sort-select:focus,.filter-btn:focus,.btn:focus,input:focus,textarea:focus{outline:3px solid rgba(37,99,166,.2);outline-offset:2px}
.content-list{display:grid;gap:15px}
.content-card{
 display:grid;grid-template-columns:175px 1fr auto;gap:21px;align-items:center;
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:15px;
 box-shadow:var(--shadow);transition:var(--transition)
}
.content-card:hover{transform:translateY(-3px);border-color:#b9d3e8;box-shadow:var(--shadow-hover)}
.cover{
 height:118px;border-radius:11px;position:relative;overflow:hidden;
 background:linear-gradient(135deg,#d6e8f5,#729ac0 54%,#e8e2f2)
}
.cover:after{content:"";position:absolute;inset:18px 22px auto auto;width:55px;height:55px;border-radius:50%;background:rgba(255,255,255,.35)}
.cover.alt{background:linear-gradient(135deg,#e3edf5,#8bb4b5 55%,#dceaf1)}
.cover.purple{background:linear-gradient(135deg,#e9e8f3,#9897bc 58%,#dcebf1)}
.cover-label{position:absolute;left:12px;bottom:10px;background:rgba(255,255,255,.82);color:var(--blue-deep);font-size:11px;padding:3px 7px;border-radius:5px;font-weight:800}
.card-tags{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:8px}
.tag{display:inline-flex;width:max-content;padding:4px 9px;border-radius:6px;background:var(--blue-soft);color:var(--blue);font-size:12px;font-weight:800}
.tag.teal{background:#e8f5f4;color:#347d80}
.tag.purple{background:#f0eff8;color:#68658f}
.content-title{font-size:19px;line-height:1.4;margin-bottom:7px}
.content-summary{color:var(--muted);font-size:13px;line-height:1.7}
.content-meta{display:flex;gap:15px;color:#8798a9;font-size:12px;margin-top:10px}
.content-action{white-space:nowrap}
.empty-state{
 display:none;text-align:center;background:#fff;border:1px dashed #bfd2e2;border-radius:var(--radius);
 padding:48px 20px;color:var(--muted)
}
.empty-state strong{display:block;color:var(--ink);font-size:18px;margin-bottom:6px}
.pagination{display:flex;justify-content:center;align-items:center;gap:7px;margin-top:30px}
.page-number,.page-next{
 min-width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--line);
 border-radius:8px;background:#fff;color:var(--muted);font-size:13px
}
.page-number:hover,.page-number.current,.page-next:hover{background:var(--blue-soft);color:var(--blue);border-color:#c5dced}
.info-band{display:grid;grid-template-columns:1.1fr .9fr;gap:25px;align-items:stretch}
.info-copy{padding:34px;background:var(--blue-deep);color:#fff;border-radius:var(--radius)}
.info-copy h2{font-size:28px;line-height:1.35;margin-bottom:13px}
.info-copy p{color:#dbeaf7}
.info-list{display:grid;gap:12px}
.info-item{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:13px;padding:18px;box-shadow:var(--shadow)}
.info-index{width:28px;height:28px;border-radius:8px;background:var(--blue-soft);color:var(--blue);display:grid;place-items:center;font-weight:800;flex:none}
.info-item h3{font-size:16px;margin-bottom:3px}
.info-item p{font-size:13px;color:var(--muted)}
.faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:60px}
.faq-box{display:grid;gap:10px}
.faq-item{box-shadow:none;overflow:hidden}
.faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left;background:#fff;color:var(--ink);padding:18px 20px;font-weight:700}
.faq-question span:last-child{color:var(--blue);font-size:20px;line-height:1}
.faq-answer{display:none;padding:0 20px 18px;color:var(--muted);font-size:14px}
.faq-item.open{border-color:#c5dced;background:var(--blue-soft)}
.faq-item.open .faq-question{background:var(--blue-soft);color:var(--blue)}
.faq-item.open .faq-answer{display:block}
.cta{padding:40px;background:#edf6fd;border:1px solid #cfe4f4;border-radius:var(--radius);display:flex;justify-content:space-between;align-items:center;gap:25px}
.cta h2{font-size:27px;line-height:1.35;margin-bottom:7px}
.cta p{color:var(--muted)}
.site-footer{background:#edf3f8;border-top:1px solid var(--line);padding:55px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}
.footer-brand{font-size:18px;font-weight:800;color:var(--blue-deep);margin-bottom:10px}
.footer-note{max-width:270px;color:var(--muted);font-size:13px}
.footer-grid h3{font-size:14px;margin:0 0 13px;color:var(--ink)}
.footer-grid a{display:block;width:max-content;color:var(--muted);font-size:13px;margin:8px 0}
.footer-grid a:hover{color:var(--blue);transform:translateX(2px)}
.copyright{border-top:1px solid var(--line);margin-top:35px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#8798a9;font-size:12px}
.age-overlay{position:fixed;inset:0;background:rgba(23,75,128,.32);z-index:50;display:grid;place-items:center;padding:20px}
.age-card{width:min(450px,100%);background:#fff;border-radius:18px;padding:32px;box-shadow:0 24px 70px rgba(24,60,96,.25);text-align:center}
.age-card h2{font-size:24px;margin-bottom:10px}
.age-card p{color:var(--muted);font-size:14px;margin-bottom:22px}
.age-actions{display:flex;justify-content:center;gap:10px}
.hidden{display:none!important}
.mobile-menu{display:none}
@media(max-width:1024px){
 .hero-layout{grid-template-columns:1fr 300px;gap:35px}
 .content-layout{grid-template-columns:210px 1fr}
 .content-card{grid-template-columns:145px 1fr auto}
}
@media(max-width:768px){
 .container{width:min(100% - 30px,620px)}
 .site-header,.nav{height:64px}
 .nav-main,.nav-actions .btn{display:none}
 .menu-toggle{display:block}
 .nav-actions{margin-left:auto}
 .search-box input{width:90px}
 .mobile-menu{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);padding:15px}
 .mobile-menu.show{display:grid;gap:5px}
 .mobile-menu .nav-link{display:block}
 .page-hero{padding:42px 0}
 .hero-layout{grid-template-columns:1fr;gap:28px}
 .page-title{font-size:36px}
 .content-layout{display:block}
 .filter-panel{display:none}
 .filter-panel.show{display:block;margin-bottom:20px}
 .filter-bar{overflow-x:auto;flex-wrap:nowrap;white-space:nowrap}
 .filter-clear{margin-left:0}
 .content-card{grid-template-columns:125px 1fr;gap:15px}
 .content-action{grid-column:2;justify-self:start}
 .cover{height:105px}
 .section{padding:58px 0}
 .info-band,.faq-layout{grid-template-columns:1fr;gap:22px}
 .section-head{display:block}
 .section-intro{margin-top:10px}
 .cta{display:block}
 .cta .btn{margin-top:20px}
 .footer-grid{grid-template-columns:1fr 1fr}
 .copyright{display:block}
 .copyright span{display:block;margin-top:7px}
}
@media(max-width:520px){
 .brand-text{font-size:14px}
 .brand-sub{font-size:9px}
 .nav{gap:10px}
 .search-box{padding:0 6px}
 .search-box input{width:70px}
 .page-title{font-size:31px}
 .content-card{grid-template-columns:1fr}
 .cover{height:145px}
 .content-action{grid-column:auto}
 .result-top{align-items:flex-start;gap:10px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:22px}
 .footer-grid>div:first-child{grid-column:1/-1}
}