/* roulang page: index */
:root{
      --blue:#2879d8;
      --blue-deep:#1459ad;
      --blue-soft:#eaf4ff;
      --cyan:#dff7fa;
      --coral:#f28c68;
      --coral-soft:#fff0e9;
      --ink:#172b45;
      --muted:#61748d;
      --line:#dbe7f2;
      --paper:#ffffff;
      --wash:#f5f9fd;
      --shadow:0 16px 38px rgba(35,84,132,.10);
      --shadow-sm:0 8px 22px rgba(35,84,132,.08);
      --radius:18px;
      --radius-sm:11px;
      --max:1180px;
    }
    *,*:before,*:after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--wash);color:var(--ink);font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.75}
    a{color:var(--blue);text-decoration:none;transition:color .2s ease,background .2s ease,transform .2s ease}
    a:hover{color:var(--blue-deep)}
    a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(242,140,104,.55);outline-offset:3px}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    .container{width:min(calc(100% - 40px),var(--max));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);box-shadow:0 4px 18px rgba(35,84,132,.04)}
    .nav-wrap{min-height:76px;display:flex;align-items:center;gap:30px}
    .brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-size:18px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
    .brand-mark{width:35px;height:35px;display:grid;place-items:center;border-radius:12px;background:var(--blue);color:#fff;font-size:17px;box-shadow:0 7px 15px rgba(40,121,216,.25)}
    .main-nav{display:flex;align-items:center;gap:7px;margin-left:auto}
    .main-nav a{padding:9px 13px;border-radius:9px;color:var(--muted);font-size:14px;font-weight:600}
    .main-nav a:hover,.main-nav a.active{color:var(--blue);background:var(--blue-soft)}
    .nav-actions{display:flex;align-items:center;gap:12px}
    .language-switch{display:inline-flex;align-items:center;padding:3px;border:1px solid var(--line);border-radius:30px;background:#f8fbfe;font-size:12px}
    .language-switch a{padding:5px 9px;color:var(--muted);border-radius:20px}
    .language-switch a.active{background:#fff;color:var(--blue);box-shadow:0 2px 7px rgba(35,84,132,.1)}
    .nav-cta,.button-primary{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 19px;border:0;border-radius:10px;background:var(--blue);color:#fff;font-weight:700;box-shadow:0 8px 17px rgba(40,121,216,.2)}
    .nav-cta:hover,.button-primary:hover{color:#fff;background:var(--blue-deep);transform:translateY(-2px)}
    .menu-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:9px;width:42px;height:40px}
    .hero{padding:76px 0 72px;background:linear-gradient(135deg,#f8fcff 0%,#edf7ff 56%,#f8fbff 100%);border-bottom:1px solid #e1edf6}
    .hero-grid{display:grid;grid-template-columns:minmax(0,1.03fr) minmax(390px,.97fr);gap:62px;align-items:center}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:24px;height:2px;background:var(--coral)}
    h1,h2,h3{margin:0;color:var(--ink);line-height:1.25;letter-spacing:-.035em}
    h1{max-width:680px;margin-top:15px;font-size:clamp(36px,5vw,62px);font-weight:850}
    h2{font-size:clamp(27px,3vw,39px)}
    h3{font-size:19px}
    .hero-copy{margin:22px 0 28px;max-width:620px;color:var(--muted);font-size:18px;line-height:1.9}
    .hero-buttons{display:flex;gap:12px;flex-wrap:wrap}
    .button-secondary{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border:1px solid #bcd4eb;border-radius:10px;background:#fff;color:var(--blue);font-weight:700}
    .button-secondary:hover{border-color:var(--blue);background:var(--blue-soft);transform:translateY(-2px)}
    .hero-notes{display:flex;gap:24px;flex-wrap:wrap;margin-top:30px;color:var(--muted);font-size:13px}
    .hero-notes strong{display:block;color:var(--ink);font-size:19px}
    .index-panel{position:relative;padding:25px;background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow)}
    .index-panel:after{content:"";position:absolute;right:-18px;top:-18px;width:92px;height:92px;border-radius:24px;background:var(--coral-soft);z-index:-1}
    .panel-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:19px}
    .panel-top strong{font-size:18px}
    .status{display:inline-flex;align-items:center;gap:6px;padding:5px 9px;border-radius:20px;background:#e8f8f1;color:#207d5c;font-size:12px;font-weight:700}
    .status:before{content:"";width:6px;height:6px;border-radius:50%;background:#36b982}
    .search-box{display:flex;gap:9px;margin-bottom:17px}
    .search-box label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
    .search-box input{min-width:0;flex:1;height:44px;margin:0;border:1px solid var(--line);border-radius:9px;padding:0 13px;color:var(--ink);box-shadow:none;background:#fbfdff}
    .search-box input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(40,121,216,.12)}
    .search-box button{border:0;border-radius:9px;padding:0 16px;background:var(--coral);color:#fff;font-weight:700;cursor:pointer}
    .matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
    .matrix-item{display:flex;align-items:center;gap:11px;padding:13px;border:1px solid var(--line);border-radius:12px;background:#fbfdff;color:var(--ink)}
    .matrix-item:hover{border-color:#94c3ee;background:var(--blue-soft);transform:translateY(-2px)}
    .matrix-icon{width:32px;height:32px;display:grid;place-items:center;border-radius:9px;background:var(--cyan);color:var(--blue-deep);font-weight:800}
    .matrix-item small{display:block;color:var(--muted);font-size:11px}
    .section{padding:86px 0}
    .section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:32px}
    .section-head p{max-width:510px;margin:9px 0 0;color:var(--muted)}
    .pain-section{background:#fff}
    .question-row{display:grid;grid-template-columns:1.1fr 1.4fr 1fr;gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow-sm)}
    .question-item{padding:25px 27px;border-right:1px solid var(--line)}
    .question-item:last-child{border-right:0}
    .question-no{color:var(--coral);font-size:13px;font-weight:800}
    .question-item p{margin:8px 0 0;color:var(--muted);font-size:14px}
    .solution{background:var(--blue-soft)}
    .solution-layout{display:grid;grid-template-columns:250px 1fr;gap:25px}
    .topic-menu{padding:20px;background:#fff;border-radius:var(--radius);border:1px solid var(--line);height:max-content}
    .topic-menu h3{font-size:16px;margin-bottom:12px}
    .topic-menu a{display:block;padding:10px 11px;border-radius:8px;color:var(--muted);font-size:14px}
    .topic-menu a:hover,.topic-menu a.selected{background:var(--blue);color:#fff}
    .content-list{display:grid;gap:12px}
    .content-row{display:grid;grid-template-columns:78px 1fr auto;gap:17px;align-items:center;padding:17px 19px;border:1px solid var(--line);border-radius:14px;background:#fff;transition:.2s}
    .content-row:hover{box-shadow:var(--shadow-sm);transform:translateX(3px)}
    .cover{height:63px;border-radius:10px;background:linear-gradient(145deg,#cbe8ff,#6fb6ee);display:grid;place-items:center;color:#fff;font-size:22px;font-weight:800}
    .content-row h3{font-size:17px}
    .meta{margin-top:4px;color:var(--muted);font-size:12px}
    .mini-link{font-size:13px;font-weight:700;white-space:nowrap}
    .milestone{background:#fff}
    .milestone-track{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:2px solid #bcdcf6}
    .milestone-item{position:relative;padding:28px 22px 0 0}
    .milestone-item:before{content:"";position:absolute;top:-8px;left:0;width:14px;height:14px;border:3px solid #fff;border-radius:50%;background:var(--blue);box-shadow:0 0 0 2px var(--blue)}
    .milestone-item h3{margin-top:10px;font-size:17px}
    .milestone-item p{margin:7px 20px 0 0;color:var(--muted);font-size:14px}
    .news-section{background:#f0f7fd}
    .news-layout{display:grid;grid-template-columns:1.4fr .8fr;gap:22px}
    .news-main,.news-side{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px}
    .news-list{margin:10px 0 0;list-style:none}
    .news-list li{display:flex;justify-content:space-between;gap:20px;padding:15px 0;border-bottom:1px solid var(--line)}
    .news-list li:last-child{border-bottom:0}
    .news-list a{color:var(--ink);font-weight:650}
    .news-list a:hover{color:var(--blue)}
    .news-list time{color:var(--muted);font-size:12px;white-space:nowrap}
    .feature-note{padding:18px;border-radius:13px;background:var(--coral-soft);margin-top:15px}
    .feature-note p{margin:8px 0 0;color:#795348;font-size:14px}
    .assurance{padding:72px 0;background:#fff}
    .assurance-grid{display:grid;grid-template-columns:1fr 1.8fr;gap:50px;align-items:center}
    .assurance-text p{color:var(--muted);margin:14px 0 0}
    .assurance-items{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .assurance-item{padding:20px;border:1px solid var(--line);border-radius:14px;background:#fbfdff}
    .assurance-item b{display:block;margin-bottom:4px}
    .assurance-item span{color:var(--muted);font-size:13px}
    .voice{background:var(--ink);color:#fff}
    .voice .section-kicker,.voice h2{color:#fff}
    .voice-card{max-width:850px;margin:28px auto 0;padding:35px 42px;border:1px solid rgba(255,255,255,.16);border-radius:20px;background:rgba(255,255,255,.07);text-align:center}
    .quote{font-size:24px;line-height:1.7;margin:0}
    .voice-card small{display:block;margin-top:15px;color:#a9c4df}
    .faq-section{background:#f5f9fd}
    .faq-list{max-width:880px;margin:0 auto;border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{display:flex;justify-content:space-between;gap:20px;width:100%;padding:20px 0;border:0;background:none;color:var(--ink);text-align:left;font-weight:750;cursor:pointer}
    .faq-question span:last-child{color:var(--blue);font-size:22px;transition:.2s}
    .faq-question[aria-expanded="true"] span:last-child{transform:rotate(45deg)}
    .faq-answer{display:none;max-width:760px;padding:0 40px 20px 0;color:var(--muted);font-size:14px}
    .faq-answer.open{display:block}
    .cta-section{padding:74px 0}
    .cta-box{display:flex;justify-content:space-between;align-items:center;gap:30px;padding:38px 44px;border-radius:22px;background:var(--blue-soft);border:1px solid #cce3f7}
    .cta-box p{margin:9px 0 0;color:var(--muted)}
    .site-footer{padding:44px 0 25px;background:#e8f1f8;border-top:1px solid var(--line)}
    .footer-grid{display:flex;justify-content:space-between;gap:30px}
    .footer-brand p{max-width:360px;margin:12px 0 0;color:var(--muted);font-size:13px}
    .footer-links{display:flex;gap:42px}
    .footer-links h3{font-size:14px;margin-bottom:10px}
    .footer-links a{display:block;color:var(--muted);font-size:13px;margin:5px 0}
    .copyright{margin-top:30px;padding-top:17px;border-top:1px solid #cfdfeb;color:var(--muted);font-size:12px}
    .copyright a{color:var(--muted)}
    @media(max-width:900px){
      .main-nav{gap:0}.main-nav a{padding:8px 8px}.nav-wrap{gap:15px}
      .hero-grid{grid-template-columns:1fr;gap:38px}.hero{padding-top:56px}
      .question-row{grid-template-columns:1fr}.question-item{border-right:0;border-bottom:1px solid var(--line)}.question-item:last-child{border-bottom:0}
      .solution-layout,.assurance-grid,.news-layout{grid-template-columns:1fr}
      .topic-menu{display:flex;gap:7px;overflow:auto}.topic-menu h3{display:none}.topic-menu a{white-space:nowrap}
      .milestone-track{grid-template-columns:repeat(2,1fr);row-gap:25px}
      .milestone-item:nth-child(3),.milestone-item:nth-child(4){border-top:2px solid #bcdcf6;padding-top:25px}
    }
    @media(max-width:680px){
      .container{width:min(calc(100% - 28px),var(--max))}
      .nav-wrap{min-height:65px}.brand{font-size:14px}.brand-mark{width:30px;height:30px}
      .menu-toggle{display:block}.main-nav{display:none;position:absolute;left:14px;right:14px;top:61px;flex-direction:column;align-items:stretch;padding:10px;background:#fff;border:1px solid var(--line);border-radius:13px;box-shadow:var(--shadow)}
      .main-nav.open{display:flex}.main-nav a{padding:12px 14px}
      .nav-actions{margin-left:auto}.nav-cta{display:none}
      h1{font-size:38px}.hero-copy{font-size:16px}.section{padding:62px 0}.section-head{display:block}
      .matrix{grid-template-columns:1fr}.index-panel{padding:18px}
      .content-row{grid-template-columns:56px 1fr;gap:12px}.cover{height:55px}.content-row .mini-link{grid-column:2}
      .milestone-track{grid-template-columns:1fr}.milestone-item,.milestone-item:nth-child(3),.milestone-item:nth-child(4){border-top:0;padding-top:18px}.milestone-item{padding-left:25px}.milestone-item:before{left:0}
      .assurance-items{grid-template-columns:1fr}.voice-card{padding:25px 20px}.quote{font-size:19px}
      .cta-box{display:block;padding:29px 24px}.cta-box .button-primary{margin-top:20px}
      .footer-grid{display:block}.footer-links{margin-top:28px;gap:45px}.footer-links h3{margin-top:0}
    }

/* roulang page: category1 */
:root{
      --blue:#2879d8;--blue-deep:#1459ad;--blue-soft:#eaf4ff;--cyan:#dff7fa;
      --coral:#f28c68;--coral-soft:#fff0e9;--ink:#172b45;--muted:#61748d;
      --line:#dbe7f2;--paper:#fff;--wash:#f5f9fd;--shadow:0 16px 38px rgba(35,84,132,.10);
      --shadow-sm:0 8px 22px rgba(35,84,132,.08);--radius:18px;--radius-sm:11px;--max:1180px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--wash);color:var(--ink);font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.75}
    a{color:var(--blue);text-decoration:none;transition:.2s ease}
    a:hover{color:var(--blue-deep)}
    a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid rgba(242,140,104,.55);outline-offset:3px}
    img{display:block;max-width:100%;height:auto}
    button,input,select{font:inherit}
    .container{width:min(calc(100% - 40px),var(--max));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);box-shadow:0 4px 18px rgba(35,84,132,.04)}
    .nav-wrap{min-height:76px;display:flex;align-items:center;gap:30px}
    .brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-size:18px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
    .brand:hover{color:var(--blue)}
    .brand-mark{width:35px;height:35px;display:grid;place-items:center;border-radius:12px;background:var(--blue);color:#fff;font-size:17px;box-shadow:0 7px 15px rgba(40,121,216,.25)}
    .main-nav{display:flex;align-items:center;gap:7px;margin-left:auto}
    .main-nav a{padding:9px 13px;border-radius:9px;color:var(--muted);font-size:14px;font-weight:600}
    .main-nav a:hover,.main-nav a.active{color:var(--blue);background:var(--blue-soft)}
    .nav-actions{display:flex;align-items:center;gap:12px}
    .language-switch{display:flex;align-items:center;padding:3px;border:1px solid var(--line);border-radius:22px;background:#f8fbfe;font-size:12px}
    .language-switch a{padding:5px 9px;color:var(--muted);border-radius:20px}
    .language-switch a.active{background:#fff;color:var(--blue);box-shadow:0 2px 7px rgba(35,84,132,.1)}
    .nav-cta,.button-primary{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 19px;border:0;border-radius:10px;background:var(--blue);color:#fff;font-weight:700;box-shadow:0 8px 17px rgba(40,121,216,.2)}
    .nav-cta:hover,.button-primary:hover{color:#fff;background:var(--blue-deep);transform:translateY(-2px)}
    .menu-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:9px;width:42px;height:40px;cursor:pointer}
    .page-hero{padding:70px 0 62px;background:linear-gradient(135deg,#f8fcff,#edf7ff 58%,#fff8f4);border-bottom:1px solid #e1edf6}
    .breadcrumb{margin-bottom:22px;color:var(--muted);font-size:13px}
    .breadcrumb a{color:var(--blue)}
    .hero-flex{display:flex;justify-content:space-between;align-items:end;gap:45px}
    .hero-copy{max-width:700px}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:24px;height:2px;background:var(--coral)}
    h1,h2,h3,p{margin-top:0}
    h1{margin:17px 0 18px;font-size:clamp(34px,5vw,58px);line-height:1.2;letter-spacing:-.055em}
    h2{font-size:clamp(25px,3vw,36px);line-height:1.3;letter-spacing:-.035em;margin-bottom:12px}
    h3{font-size:18px;line-height:1.4;margin-bottom:7px}
    .hero-copy p{max-width:650px;color:var(--muted);font-size:17px}
    .hero-badge{padding:18px 20px;border:1px solid #ffd2c3;border-radius:15px;background:var(--coral-soft);color:#9b5038;min-width:205px;box-shadow:var(--shadow-sm)}
    .hero-badge strong{display:block;color:#783b2b;font-size:24px;line-height:1.25}
    .section{padding:78px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}
    .section-head p{max-width:530px;margin:7px 0 0;color:var(--muted)}
    .browse-layout{display:grid;grid-template-columns:235px minmax(0,1fr);gap:28px;align-items:start}
    .filter-panel,.info-card,.faq-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
    .filter-panel{padding:22px;position:sticky;top:100px}
    .filter-panel h3{font-size:16px;margin-bottom:14px}
    .filter-group{padding:17px 0;border-top:1px solid var(--line)}
    .filter-group:first-of-type{border-top:0;padding-top:0}
    .filter-group label{display:block;margin:7px 0;color:var(--muted);font-size:14px;cursor:pointer}
    .filter-group input{margin-right:8px;accent-color:var(--blue)}
    .clear-link{display:inline-block;margin-top:14px;font-size:13px}
    .toolbar{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:15px}
    .result-count{color:var(--muted);font-size:14px}
    select{height:42px;border:1px solid var(--line);border-radius:9px;padding:0 12px;color:var(--ink);background:#fff}
    .stage-list{display:grid;gap:14px}
    .stage-item{display:grid;grid-template-columns:145px minmax(0,1fr) auto;gap:21px;align-items:center;padding:16px;border:1px solid var(--line);border-radius:15px;background:#fff;transition:.22s ease}
    .stage-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#a9cceb}
    .stage-thumb{height:102px;border-radius:11px;background:linear-gradient(145deg,#dff7fa,#b8dcfa);display:grid;place-items:center;color:var(--blue-deep);font-size:28px;position:relative;overflow:hidden}
    .stage-thumb:after{content:"♪";position:absolute;right:13px;bottom:4px;font-size:34px;color:rgba(255,255,255,.8)}
    .stage-item h3{margin:5px 0}
    .tag{display:inline-flex;align-items:center;padding:4px 9px;border-radius:20px;background:var(--blue-soft);color:var(--blue-deep);font-size:12px;font-weight:700}
    .tag.warm{background:var(--coral-soft);color:#a34d35}
    .meta{color:var(--muted);font-size:12px}
    .stage-item p{margin:6px 0 0;color:var(--muted);font-size:14px;line-height:1.65}
    .button-secondary{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 14px;border:1px solid #bcd4eb;border-radius:9px;background:#fff;color:var(--blue);font-weight:700;font-size:14px}
    .button-secondary:hover{border-color:var(--blue);background:var(--blue-soft);transform:translateY(-2px)}
    .featured{margin:55px 0 0;padding:29px 32px;display:grid;grid-template-columns:1fr 190px;gap:30px;align-items:center;background:var(--blue);color:#fff;border-radius:var(--radius);box-shadow:var(--shadow)}
    .featured h2{margin:10px 0;color:#fff;font-size:27px}
    .featured p{margin-bottom:0;color:#dceeff}
    .featured .section-kicker{color:#bfe5ff}
    .featured .button-secondary{border:0;background:#fff}
    .topics-section{background:#fff}
    .topic-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:28px}
    .info-card{padding:27px}
    .number-list{list-style:none;margin:0;padding:0}
    .number-list li{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
    .number-list li:last-child{border-bottom:0}
    .number{flex:0 0 32px;height:32px;display:grid;place-items:center;border-radius:9px;background:var(--blue-soft);color:var(--blue);font-weight:800}
    .number-list p{margin:3px 0 0;color:var(--muted);font-size:14px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}
    .tag-cloud a{padding:8px 12px;border:1px solid var(--line);border-radius:9px;color:var(--muted);font-size:13px;background:#fbfdff}
    .tag-cloud a:hover{background:var(--blue-soft);border-color:#a9cceb;color:var(--blue)}
    .faq-section{background:#f0f7fd}
    .faq-box{padding:12px 25px}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-item:last-child{border-bottom:0}
    .faq-question{width:100%;padding:20px 4px;border:0;background:none;text-align:left;color:var(--ink);font-weight:700;cursor:pointer;display:flex;justify-content:space-between}
    .faq-question span:last-child{color:var(--blue);font-size:22px;line-height:1}
    .faq-answer{display:none;padding:0 35px 20px 4px;color:var(--muted);font-size:14px;max-width:780px}
    .faq-item.open .faq-answer{display:block}
    .cta{padding:65px 0}
    .cta-box{padding:42px 48px;border:1px solid #cbe1f3;border-radius:var(--radius);background:linear-gradient(110deg,#eaf4ff,#fff7f1);display:flex;justify-content:space-between;align-items:center;gap:28px}
    .cta-box p{margin:8px 0 0;color:var(--muted)}
    .site-footer{padding:45px 0 22px;background:#eaf2f9;border-top:1px solid var(--line)}
    .footer-grid{display:flex;justify-content:space-between;gap:50px}
    .footer-brand{max-width:350px}
    .footer-brand p{margin:16px 0 0;color:var(--muted);font-size:14px}
    .footer-links{display:flex;gap:70px}
    .footer-links h3{font-size:14px;margin-bottom:10px}
    .footer-links a{display:block;margin:7px 0;color:var(--muted);font-size:13px}
    .footer-links a:hover{color:var(--blue)}
    .copyright{padding-top:25px;margin-top:28px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}
    .copyright a{margin-left:5px}
    @media(max-width:1024px){.hero-flex{align-items:start;flex-direction:column}.hero-badge{min-width:0}.browse-layout{grid-template-columns:210px 1fr}.stage-item{grid-template-columns:120px 1fr}.stage-item .button-secondary{grid-column:2;justify-self:start}}
    @media(max-width:768px){
      .container{width:min(calc(100% - 30px),var(--max))}.nav-wrap{gap:12px;min-height:68px}.brand{font-size:15px}.brand-mark{width:32px;height:32px}
      .menu-toggle{display:block;margin-left:auto}.main-nav{display:none;position:absolute;top:69px;left:15px;right:15px;padding:12px;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}
      .main-nav.open{display:flex}.main-nav a{padding:12px}.nav-actions{gap:7px}.nav-cta{display:none}.page-hero{padding:45px 0}.section{padding:55px 0}h1{font-size:38px}.hero-badge{width:100%}
      .browse-layout,.topic-grid{grid-template-columns:1fr}.filter-panel{position:static}.stage-item{grid-template-columns:100px 1fr;gap:15px}.stage-thumb{height:85px}.stage-item .button-secondary{grid-column:2}
      .featured{grid-template-columns:1fr;padding:25px}.cta-box{padding:30px 24px;display:block}.cta-box .button-primary{margin-top:20px}.footer-grid{display:block}.footer-links{margin-top:30px;gap:35px}
    }
    @media(max-width:520px){.hero-flex{gap:25px}.toolbar{align-items:start;flex-direction:column}.stage-item{grid-template-columns:1fr}.stage-thumb{height:130px}.stage-item .button-secondary{grid-column:1}.footer-links{display:grid;grid-template-columns:1fr 1fr}.copyright{line-height:1.8}}

/* roulang page: category2 */
:root{
 --blue:#2879d8;--blue-deep:#1459ad;--blue-soft:#eaf4ff;--cyan:#dff7fa;
 --coral:#f28c68;--coral-soft:#fff0e9;--ink:#172b45;--muted:#61748d;
 --line:#dbe7f2;--paper:#fff;--wash:#f5f9fd;
 --shadow:0 16px 38px rgba(35,84,132,.10);--shadow-sm:0 8px 22px rgba(35,84,132,.08);
 --radius:18px;--radius-sm:11px;--max:1180px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--wash);color:var(--ink);font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.75}
a{color:var(--blue);text-decoration:none;transition:color .2s ease,background .2s ease,transform .2s ease,box-shadow .2s ease}
a:hover{color:var(--blue-deep)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(242,140,104,.55);outline-offset:3px}
img{display:block;max-width:100%;height:auto}
button,input{font:inherit}
h1,h2,h3,p{margin-top:0}
h1,h2,h3{line-height:1.25;letter-spacing:-.035em}
h1{font-size:clamp(34px,5vw,58px);margin-bottom:18px}
h2{font-size:clamp(27px,3.5vw,39px);margin-bottom:10px}
h3{font-size:19px;margin-bottom:7px}
.container{width:min(calc(100% - 40px),var(--max));margin:0 auto}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);box-shadow:0 4px 18px rgba(35,84,132,.04)}
.nav-wrap{min-height:76px;display:flex;align-items:center;gap:30px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-size:18px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
.brand:hover{color:var(--blue)}
.brand-mark{width:35px;height:35px;display:grid;place-items:center;border-radius:12px;background:var(--blue);color:#fff;font-size:17px;box-shadow:0 7px 15px rgba(40,121,216,.25)}
.main-nav{display:flex;align-items:center;gap:7px;margin-left:auto}
.main-nav a{padding:9px 13px;border-radius:9px;color:var(--muted);font-size:14px;font-weight:600}
.main-nav a:hover,.main-nav a.active{color:var(--blue);background:var(--blue-soft)}
.nav-actions{display:flex;align-items:center;gap:12px}
.language-switch{display:flex;align-items:center;padding:3px;border:1px solid var(--line);border-radius:22px;background:#f8fbfe;font-size:12px;font-weight:700}
.language-switch a{padding:5px 9px;color:var(--muted);border-radius:20px}
.language-switch a.active{background:#fff;color:var(--blue);box-shadow:0 2px 7px rgba(35,84,132,.1)}
.nav-cta,.button-primary{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 19px;border:0;border-radius:10px;background:var(--blue);color:#fff;font-weight:700;box-shadow:0 8px 17px rgba(40,121,216,.2)}
.nav-cta:hover,.button-primary:hover{color:#fff;background:var(--blue-deep);transform:translateY(-2px)}
.button-secondary{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border:1px solid #bcd4eb;border-radius:10px;background:#fff;color:var(--blue);font-weight:700}
.button-secondary:hover{border-color:var(--blue);background:var(--blue-soft);transform:translateY(-2px)}
.menu-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:9px;width:42px;height:40px;cursor:pointer}
.hero{padding:58px 0 48px;background:linear-gradient(135deg,#f8fcff 0%,#edf7ff 58%,#fffaf7 100%);border-bottom:1px solid #e1edf6}
.breadcrumb{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:28px}
.breadcrumb a{color:var(--blue)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(300px,.8fr);gap:52px;align-items:end}
.eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before{content:"";width:24px;height:2px;background:var(--coral)}
.hero-copy{max-width:700px;color:var(--muted);font-size:18px;line-height:1.9;margin-bottom:25px}
.hero-buttons{display:flex;gap:12px;flex-wrap:wrap}
.hero-aside{padding:25px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(255,255,255,.88);box-shadow:var(--shadow)}
.hero-aside .mini-label{color:var(--coral);font-size:12px;font-weight:800;letter-spacing:.08em}
.hero-aside h2{font-size:25px;margin:9px 0 16px}
.hero-aside p{color:var(--muted);font-size:14px;margin-bottom:17px}
.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.tag{display:inline-flex;padding:6px 10px;border-radius:8px;background:var(--blue-soft);color:var(--blue-deep);font-size:12px;font-weight:700}
.tag.warm{background:var(--coral-soft);color:#b75b3d}
.section{padding:82px 0}
.section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:28px}
.section-head p{max-width:540px;margin:8px 0 0;color:var(--muted)}
.review-layout{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(250px,.55fr);gap:24px}
.feature-card{display:grid;grid-template-columns:42% 58%;min-height:330px;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow)}
.feature-visual{position:relative;display:flex;align-items:flex-end;padding:25px;background:linear-gradient(145deg,#a8dbed 0%,#4a91d8 57%,#2879d8 100%);overflow:hidden}
.feature-visual:before,.feature-visual:after{content:"";position:absolute;border:1px solid rgba(255,255,255,.55);border-radius:50%}
.feature-visual:before{width:240px;height:240px;right:-95px;top:-54px}
.feature-visual:after{width:165px;height:165px;left:-65px;bottom:-55px}
.play-symbol{position:absolute;top:24px;right:24px;width:47px;height:47px;border-radius:50%;display:grid;place-items:center;background:#fff;color:var(--blue);font-size:20px;box-shadow:0 8px 18px rgba(16,71,131,.18)}
.visual-caption{position:relative;z-index:1;color:#fff}
.visual-caption small{display:block;opacity:.8;font-size:12px;margin-bottom:3px}
.visual-caption strong{font-size:23px}
.feature-content{padding:31px}
.feature-content .meta{margin:15px 0 13px}
.feature-content p{color:var(--muted);font-size:14px;margin-bottom:22px}
.meta{color:var(--muted);font-size:12px}
.side-panel{padding:23px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-sm)}
.side-panel h3{font-size:18px}
.side-panel p{color:var(--muted);font-size:14px}
.side-links{display:grid;gap:7px;margin-top:16px}
.side-links a{display:flex;justify-content:space-between;gap:10px;padding:11px 12px;border-radius:9px;color:var(--muted);font-size:14px}
.side-links a:hover,.side-links a.selected{background:var(--blue-soft);color:var(--blue-deep)}
.review-section{background:#fff}
.group-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.group{padding:25px 27px;border:1px solid var(--line);border-radius:var(--radius);background:#fbfdff}
.group-header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:15px;margin-bottom:4px}
.group-header span{color:var(--coral);font-size:12px;font-weight:800}
.review-list{list-style:none;padding:0;margin:0}
.review-list li{display:grid;grid-template-columns:38px 1fr auto;gap:13px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}
.review-list li:last-child{border-bottom:0}
.review-number{width:30px;height:30px;display:grid;place-items:center;border-radius:9px;background:var(--cyan);color:var(--blue-deep);font-size:12px;font-weight:800}
.review-list strong{display:block;font-size:15px}
.review-list small{display:block;color:var(--muted);font-size:12px}
.review-list a{font-size:13px;font-weight:700;white-space:nowrap}
.timeline-section{background:var(--blue-soft)}
.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:2px solid #9bc7ef}
.timeline-item{position:relative;padding:27px 28px 5px 0}
.timeline-item:not(:last-child){border-right:1px solid #c4dced;margin-right:28px}
.timeline-item:before{content:"";position:absolute;top:-9px;left:0;width:15px;height:15px;border:3px solid var(--blue-soft);border-radius:50%;background:var(--blue);box-shadow:0 0 0 1px var(--blue)}
.timeline-item h3{margin-top:9px;font-size:18px}
.timeline-item p{color:var(--muted);font-size:14px;margin-bottom:0}
.quote-section{background:#fff}
.quote-box{display:grid;grid-template-columns:90px 1fr auto;gap:25px;align-items:center;padding:32px 35px;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.quote-mark{font-size:72px;line-height:1;color:var(--coral);font-family:Georgia,serif}
.quote-box blockquote{margin:0;font-size:22px;font-weight:700;line-height:1.55}
.quote-box cite{display:block;margin-top:9px;color:var(--muted);font-size:13px;font-style:normal;font-weight:400}
.faq-section{background:#f0f7fd}
.accordion{margin:0;border:0;background:transparent}
.accordion-item{margin-bottom:10px;border:1px solid var(--line);border-radius:12px;background:#fff;overflow:hidden}
.accordion-title{display:block;padding:18px 21px;color:var(--ink);font-size:15px;font-weight:700;border:0;background:#fff}
.accordion-title:hover,.accordion-item.is-active .accordion-title{background:var(--blue-soft);color:var(--blue-deep)}
.accordion-content{padding:0 21px 18px;color:var(--muted);font-size:14px;line-height:1.8;border:0;background:#fff}
.cta{padding:62px 0}
.cta-box{display:flex;justify-content:space-between;align-items:center;gap:25px;padding:35px 40px;border:1px solid #c9e1f2;border-radius:var(--radius);background:linear-gradient(110deg,#eaf6ff,#fff5ef);box-shadow:var(--shadow-sm)}
.cta-box p{color:var(--muted);margin:8px 0 0}
.site-footer{padding:43px 0 24px;background:#eaf3fb;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:60px}
.footer-brand p{max-width:390px;margin:15px 0 0;color:var(--muted);font-size:14px}
.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.footer-links h3{font-size:14px;margin-bottom:10px}
.footer-links a{display:block;color:var(--muted);font-size:13px;margin:6px 0}
.footer-links a:hover{color:var(--blue)}
.copyright{margin-top:34px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}
.copyright a{color:var(--muted)}
@media(max-width:1024px){
 .hero-grid{gap:30px}.review-layout{grid-template-columns:1fr}.side-panel{max-width:none}
}
@media(max-width:768px){
 .container{width:min(calc(100% - 28px),var(--max))}
 .nav-wrap{min-height:65px;gap:10px}.brand{font-size:15px}.brand-mark{width:31px;height:31px}
 .menu-toggle{display:block;margin-left:auto}
 .main-nav{display:none;position:absolute;left:14px;right:14px;top:72px;padding:10px;flex-direction:column;align-items:stretch;margin:0;border:1px solid var(--line);border-radius:13px;background:#fff;box-shadow:var(--shadow)}
 .main-nav.is-open{display:flex}.main-nav a{padding:12px 14px}
 .nav-actions{gap:7px}.nav-cta{display:none}.language-switch{font-size:11px}
 .hero{padding:38px 0 36px}.hero-grid{grid-template-columns:1fr}.hero-copy{font-size:16px}
 .section{padding:57px 0}.section-head{display:block;margin-bottom:22px}
 .feature-card{grid-template-columns:1fr}.feature-visual{min-height:190px}.feature-content{padding:24px}
 .group-grid,.timeline{grid-template-columns:1fr}.timeline-item{padding:25px 0 25px 0;border-right:0!important;border-bottom:1px solid #c4dced;margin:0!important}
 .timeline-item:last-child{border-bottom:0}.quote-box{grid-template-columns:55px 1fr;padding:25px 21px}.quote-box .button-secondary{grid-column:2}
 .quote-box blockquote{font-size:18px}.quote-mark{font-size:52px}
 .cta-box{display:block;padding:28px 24px}.cta-box .button-primary{margin-top:20px}
 .footer-grid{grid-template-columns:1fr;gap:25px}.footer-links{grid-template-columns:1fr 1fr}
}
@media(max-width:520px){
 h1{font-size:34px}.hero-buttons a{width:100%}.review-list li{grid-template-columns:32px 1fr}.review-list li>a{grid-column:2}
 .review-list a{margin-top:3px}.footer-links{gap:12px}.feature-visual{min-height:165px}
}