/* roulang page: index */
:root{
      --bg:#171218;
      --bg-soft:#1d1720;
      --surface:#241a26;
      --surface-2:#2b202d;
      --line:#40303b;
      --line-soft:rgba(246,239,243,.12);
      --text:#f6eff3;
      --muted:#c9bbc3;
      --dim:#8e808a;
      --pink:#e64b9a;
      --pink-soft:rgba(230,75,154,.16);
      --coral:#ff856d;
      --mint:#62d6c7;
      --shadow:0 18px 42px rgba(0,0,0,.28);
      --radius:6px;
      --radius-lg:8px;
      --container:1200px;
      --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:var(--bg);
      color:var(--text);
      font-family:var(--font);
      font-size:16px;
      line-height:1.7;
      overflow-x:hidden;
    }
    body.menu-open{overflow:hidden}
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    img{display:block;max-width:100%}
    ::selection{background:var(--pink);color:#171218}
    :focus-visible{outline:2px solid var(--mint);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 64px));margin:0 auto}
    .skip-link{position:absolute;left:-999px;top:auto}
    .skip-link:focus{left:20px;top:16px;background:var(--mint);color:#171218;padding:8px 14px;z-index:9999}
    .site-header{
      position:sticky;top:0;z-index:100;
      height:74px;
      border-bottom:1px solid rgba(230,75,154,.5);
      background:rgba(23,18,24,.94);
      backdrop-filter:blur(14px);
    }
    .nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{
      display:flex;align-items:center;gap:11px;
      min-width:max-content;font-size:17px;font-weight:800;letter-spacing:.02em;
    }
    .brand-mark{
      width:29px;height:29px;position:relative;border:1px solid var(--pink);
      background:linear-gradient(135deg,rgba(230,75,154,.24),rgba(255,133,109,.06));
    }
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--pink)}
    .brand-mark:before{width:1px;height:100%;left:8px;top:0;box-shadow:8px 0 0 rgba(230,75,154,.55)}
    .brand-mark:after{width:100%;height:2px;bottom:5px;left:0;background:var(--coral)}
    .desktop-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
    .desktop-nav a{
      position:relative;padding:23px 13px 21px;color:var(--muted);
      font-size:14px;transition:color .2s ease;
    }
    .desktop-nav a:after{
      content:"";position:absolute;bottom:0;left:13px;right:13px;height:2px;
      transform:scaleX(0);background:var(--pink);box-shadow:0 0 12px var(--pink);
      transition:transform .2s ease;
    }
    .desktop-nav a:hover,.desktop-nav a.active{color:var(--text)}
    .desktop-nav a:hover:after,.desktop-nav a.active:after{transform:scaleX(1)}
    .desktop-nav a.active{color:var(--pink)}
    .nav-cta,.btn-primary{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      min-height:42px;padding:0 17px;border:1px solid var(--pink);
      border-radius:4px;background:var(--pink);color:#1b1218;font-weight:800;
      font-size:14px;transition:background .2s ease,transform .2s ease,border-color .2s ease;
    }
    .nav-cta:hover,.btn-primary:hover{background:var(--coral);border-color:var(--coral);transform:translateY(-1px)}
    .nav-cta:active,.btn-primary:active,.btn-secondary:active{transform:translateY(1px)}
    .menu-toggle{
      display:none;width:44px;height:44px;border:1px solid var(--line);
      border-radius:4px;background:transparent;color:var(--text);font-size:22px;
    }
    .mobile-menu{
      display:none;position:fixed;inset:74px 0 0;background:#171218;
      padding:28px 20px;z-index:90;
    }
    .mobile-menu.open{display:block}
    .mobile-menu a{
      display:block;padding:16px 14px;border-bottom:1px solid var(--line-soft);
      color:var(--muted);font-size:18px;
    }
    .mobile-menu a.active{color:var(--pink);border-left:3px solid var(--pink);background:var(--pink-soft)}
    .mobile-menu .nav-cta{width:100%;margin-top:24px}
    .hero{
      min-height:670px;position:relative;overflow:hidden;
      display:flex;align-items:center;border-bottom:1px solid var(--line);
      background:#1a131a;
    }
    .hero:before{
      content:"";position:absolute;inset:0;
      background:
        linear-gradient(90deg,rgba(23,18,24,.96) 0%,rgba(23,18,24,.74) 45%,rgba(23,18,24,.38) 100%),
        linear-gradient(180deg,rgba(23,18,24,.05),rgba(23,18,24,.9)),
        repeating-linear-gradient(90deg,transparent 0,transparent 86px,rgba(255,255,255,.035) 87px,transparent 88px);
      z-index:1;
    }
    .hero-art{
      position:absolute;inset:0;
      background:
        radial-gradient(circle at 76% 39%,rgba(230,75,154,.28),transparent 20%),
        radial-gradient(circle at 78% 67%,rgba(255,133,109,.16),transparent 27%),
        linear-gradient(118deg,#221822 16%,#51304b 54%,#201924 100%);
    }
    .hero-art:before{
      content:"";position:absolute;right:13%;bottom:-11%;width:375px;height:570px;
      border-radius:48% 48% 13% 13% / 34% 34% 10% 10%;
      background:linear-gradient(155deg,rgba(246,239,243,.28),rgba(230,75,154,.12) 55%,rgba(23,18,24,.7));
      border:1px solid rgba(246,239,243,.15);filter:blur(.1px);
      box-shadow:-35px 0 90px rgba(230,75,154,.18);
    }
    .hero-art:after{
      content:"";position:absolute;right:6%;top:18%;width:31%;height:52%;
      border:1px solid rgba(98,214,199,.23);border-left:0;
      background:repeating-linear-gradient(180deg,transparent 0,transparent 24px,rgba(98,214,199,.12) 25px);
    }
    .hero-content{position:relative;z-index:2;padding:85px 0 135px;max-width:800px}
    .eyebrow,.section-index{
      display:flex;align-items:center;gap:10px;color:var(--mint);
      font-size:13px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;
    }
    .eyebrow:before,.section-index:before{content:"";width:25px;height:1px;background:var(--mint)}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(44px,5vw,56px);line-height:1.23;margin:16px 0 20px;font-weight:850}
    .hero p{max-width:700px;color:var(--muted);font-size:17px;line-height:1.9;margin-bottom:30px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px}
    .btn-secondary{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:42px;
      padding:0 17px;border:1px solid var(--line);border-radius:4px;background:rgba(36,26,38,.6);
      color:var(--text);font-weight:700;font-size:14px;transition:border-color .2s ease,background .2s ease,transform .2s ease;
    }
    .btn-secondary:hover{border-color:var(--mint);background:rgba(98,214,199,.1)}
    .hero-metrics{
      position:absolute;z-index:3;bottom:24px;left:50%;transform:translateX(-50%);
      width:min(var(--container),calc(100% - 64px));display:flex;gap:0;
    }
    .metric{padding:0 25px;border-left:1px solid rgba(246,239,243,.2);color:var(--muted);font-size:13px}
    .metric:first-child{padding-left:0;border-left:0}
    .metric strong{display:block;color:var(--text);font-size:14px}
    .next-rail{
      position:absolute;z-index:3;bottom:0;right:max(32px,calc((100% - var(--container))/2));
      padding:13px 0;color:var(--dim);font-size:12px;letter-spacing:.08em;
    }
    .next-rail:after{content:"";display:inline-block;width:58px;height:1px;background:var(--pink);margin-left:10px;vertical-align:middle}
    main{overflow:hidden}
    .section{padding:96px 0}
    .section.soft{background:var(--bg-soft)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:38px}
    .section-head h2{margin:10px 0 0;font-size:clamp(30px,3vw,36px);line-height:1.35}
    .section-head p{max-width:510px;margin:0;color:var(--muted);font-size:15px}
    .feature-layout{display:grid;grid-template-columns:1.65fr 1fr;gap:18px}
    .feature-main,.feature-card,.topic-card,.plan-card,.case-item,.price-card{
      position:relative;overflow:hidden;border:1px solid var(--line);background:var(--surface);
      box-shadow:var(--shadow);border-radius:var(--radius);
    }
    .feature-main{min-height:365px;padding:32px;display:flex;flex-direction:column;justify-content:end;border-color:rgba(230,75,154,.75)}
    .feature-main:before{
      content:"";position:absolute;inset:0;background:
      linear-gradient(0deg,rgba(23,18,24,.98),rgba(23,18,24,.12)),
      radial-gradient(circle at 75% 25%,rgba(230,75,154,.42),transparent 30%);
    }
    .feature-main > *,.feature-card > *{position:relative;z-index:1}
    .feature-main .ghost-number{position:absolute;z-index:0;right:24px;top:4px;font-size:156px;color:rgba(246,239,243,.05);font-weight:800;line-height:1}
    .feature-side{display:grid;grid-template-rows:1fr 1fr;gap:18px}
    .feature-card{padding:24px;min-height:173px;transition:border-color .2s ease,transform .2s ease}
    .feature-card:after,.topic-card:after,.case-item:after{
      content:"";position:absolute;bottom:0;left:0;width:100%;height:2px;background:var(--pink);
      transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
    }
    .feature-card:hover,.topic-card:hover,.case-item:hover{border-color:rgba(230,75,154,.8);transform:translateY(-3px)}
    .feature-card:hover:after,.topic-card:hover:after,.case-item:hover:after{transform:scaleX(1)}
    .card-number{color:var(--mint);font-size:13px;font-weight:800;letter-spacing:.08em}
    .feature-main h3,.feature-card h3{margin:10px 0 8px;font-size:22px;line-height:1.4}
    .feature-main p,.feature-card p{margin:0;color:var(--muted);font-size:14px}
    .inline-link{display:inline-flex;align-items:center;gap:7px;margin-top:16px;color:var(--pink);font-weight:700;font-size:14px}
    .inline-link span{transition:transform .2s ease}.inline-link:hover span{transform:translateX(4px)}
    .compact-tags{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:18px}
    .compact-tag{padding:15px;border-top:1px solid var(--line);color:var(--muted);font-size:14px}
    .compact-tag b{display:block;color:var(--text);margin-bottom:3px}
    .scene-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:34px}
    .scene-nav{border-left:1px solid var(--line)}
    .scene-tab{
      width:100%;text-align:left;border:0;border-left:2px solid transparent;margin-left:-1px;
      background:transparent;color:var(--dim);padding:16px 18px;transition:.2s;
    }
    .scene-tab strong{display:block;color:inherit;font-size:16px}
    .scene-tab small{display:block;margin-top:3px;font-size:12px}
    .scene-tab:hover,.scene-tab.active{color:var(--text);background:rgba(230,75,154,.08)}
    .scene-tab.active{border-left-color:var(--pink);color:var(--pink)}
    .scene-rail{display:flex;gap:16px;overflow-x:auto;padding-bottom:13px;scroll-snap-type:x proximity}
    .scene-rail::-webkit-scrollbar{height:5px}.scene-rail::-webkit-scrollbar-thumb{background:var(--line);border-radius:9px}
    .topic-card{min-width:340px;width:340px;scroll-snap-align:start;transition:.22s}
    .topic-image{height:205px;position:relative;overflow:hidden;background:#362638}
    .topic-image:before{
      content:"";position:absolute;inset:0;background:
      linear-gradient(180deg,transparent,rgba(23,18,24,.86)),
      radial-gradient(circle at 70% 35%,rgba(255,133,109,.47),transparent 25%),
      linear-gradient(135deg,#31242f,#6a395b);
    }
    .topic-image:after{content:"";position:absolute;right:17%;bottom:-36px;width:128px;height:218px;border-radius:56% 56% 8% 8%;background:rgba(246,239,243,.23);transform:rotate(8deg)}
    .topic-content{padding:18px}
    .badge{display:inline-flex;padding:3px 8px;border:1px solid rgba(98,214,199,.42);color:var(--mint);font-size:12px;line-height:1.3}
    .topic-content h3{font-size:19px;margin:11px 0 6px}.topic-content p{font-size:14px;color:var(--muted);margin:0}
    .case-feature{display:grid;grid-template-columns:1.15fr .85fr;border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow)}
    .case-cover{min-height:380px;position:relative;background:linear-gradient(135deg,#2c2030,#6e355d)}
    .case-cover:before{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(23,18,24,.72),transparent),repeating-linear-gradient(90deg,transparent 0,transparent 34px,rgba(246,239,243,.05) 35px)}
    .case-cover:after{content:"";position:absolute;width:40%;height:78%;right:21%;bottom:-11%;border:1px solid rgba(246,239,243,.22);border-radius:48% 48% 5% 5%;background:rgba(246,239,243,.15)}
    .case-info{padding:38px}
    .case-info h3{font-size:26px;line-height:1.4;margin:13px 0}.case-info p{color:var(--muted);font-size:15px}
    .check-list{padding:0;margin:20px 0;list-style:none}
    .check-list li{position:relative;padding:5px 0 5px 22px;color:var(--muted);font-size:14px}
    .check-list li:before{content:"✓";position:absolute;left:0;color:var(--mint);font-weight:800}
    .case-list{display:grid;grid-template-columns:1.15fr .85fr;gap:16px;margin-top:16px}
    .case-item{padding:22px;min-height:150px;transition:.22s}
    .case-item h3{margin:9px 0 5px;font-size:18px}.case-item p{margin:0;color:var(--muted);font-size:14px}
    .pricing-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:36px;align-items:start}
    .pricing-intro{position:sticky;top:110px}
    .pricing-intro h2{font-size:35px;line-height:1.35;margin:12px 0}.pricing-intro p{color:var(--muted)}
    .pricing-cards{display:grid;grid-template-columns:.82fr 1.18fr;gap:16px;align-items:start}
    .price-card{padding:26px}.price-card.recommended{border-color:var(--pink);margin-top:-20px}.price-card.custom{border-color:rgba(255,133,109,.65);margin-top:22px}
    .recommend-label{display:inline-block;margin:-26px -26px 22px;padding:6px 12px;background:var(--pink);color:#1a1218;font-size:13px;font-weight:800}
    .price-card h3{font-size:21px;margin:0 0 8px}.price-card p{margin:0;color:var(--muted);font-size:14px}.price{font-size:25px;font-weight:800;color:var(--text);margin:18px 0 8px}
    .price-card .btn-primary,.price-card .btn-secondary{width:100%;margin-top:16px}
    .micro-note{margin-top:20px;color:var(--dim);font-size:13px}
    .info-band{padding:24px 0;background:#211924;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .band-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .band-item{padding-left:18px;border-left:2px solid var(--pink)}.band-item b{display:block;font-size:14px}.band-item span{color:var(--dim);font-size:13px}
    .insight-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:28px}
    .article-list{border-top:1px solid var(--line)}
    .article-row{display:grid;grid-template-columns:68px 1fr auto;gap:16px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line);transition:.2s}
    .article-row:hover{padding-left:8px;background:rgba(230,75,154,.05)}.article-no{color:var(--mint);font-weight:800;font-size:13px}
    .article-row h3{margin:0;font-size:16px}.article-row p{grid-column:2;margin:3px 0 0;color:var(--dim);font-size:13px}
    .article-arrow{color:var(--pink);font-size:21px}
    .quote-panel{padding:32px;border:1px solid var(--line);background:var(--surface);min-height:100%}
    .quote-panel blockquote{margin:14px 0 20px;font-size:21px;line-height:1.7}.quote-panel cite{color:var(--muted);font-size:14px;font-style:normal}
    .faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:55px}
    .faq-intro h2{font-size:35px;line-height:1.35;margin:12px 0}.faq-intro p{color:var(--muted)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{
      display:flex;justify-content:space-between;align-items:center;width:100%;text-align:left;
      padding:19px 0;border:0;background:transparent;color:var(--text);font-weight:750;font-size:16px;
    }
    .faq-question span:last-child{color:var(--pink);font-size:23px;font-weight:400}
    .faq-answer{display:none;padding:0 28px 20px 0;color:var(--muted);font-size:14px}
    .faq-item.open{border-left:2px solid var(--pink);padding-left:16px;background:rgba(230,75,154,.05)}
    .faq-item.open .faq-answer{display:block}.faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta-strip{padding:38px 0;border-top:1px solid var(--pink);border-bottom:1px solid var(--pink);background:#211923}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
    .cta-inner h2{margin:0 0 5px;font-size:29px}.cta-inner p{margin:0;color:var(--muted)}
    .lead-section{padding:76px 0;background:var(--bg-soft)}
    .lead-box{display:grid;grid-template-columns:1fr 1fr;gap:42px;padding:34px;border:1px solid var(--line);background:var(--surface)}
    .lead-box h2{font-size:31px;line-height:1.4;margin:10px 0}.lead-box p{color:var(--muted)}
    .lead-form{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-content:start}
    .field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}
    .field label{color:var(--muted);font-size:13px}
    .field input,.field select,.field textarea{
      width:100%;min-height:44px;padding:10px 12px;border:1px solid var(--line);
      border-radius:4px;background:#18131a;color:var(--text);outline:none;transition:.2s;
    }
    .field textarea{min-height:82px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--mint)}
    .form-note{grid-column:1/-1;color:var(--dim);font-size:12px;line-height:1.6}.form-submit{grid-column:1/-1;border:0}
    .site-footer{padding:54px 0 24px;background:#110e12;border-top:1px solid var(--pink)}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:30px;padding-bottom:34px}
    .footer-brand p{color:var(--dim);font-size:14px;max-width:360px;margin-top:13px}
    .footer-title{font-size:14px;font-weight:800;margin-bottom:10px;color:var(--text)}
    .footer-links{display:grid;gap:7px}.footer-links a{color:var(--dim);font-size:14px;transition:.2s}.footer-links a:hover{color:var(--pink)}
    .copyright{padding-top:18px;border-top:1px solid var(--line-soft);color:var(--dim);font-size:12px;display:flex;justify-content:space-between;gap:18px}
    @media(max-width:1024px){
      .container{width:min(var(--container),calc(100% - 48px))}
      .desktop-nav{gap:0}.desktop-nav a{padding-left:9px;padding-right:9px}
      .feature-layout,.pricing-layout{grid-template-columns:1fr}.pricing-intro{position:static}
      .pricing-cards{max-width:760px}.faq-layout{gap:34px}
    }
    @media(max-width:768px){
      .container{width:calc(100% - 40px)}
      .site-header{height:68px}.desktop-nav,.nav-wrap>.nav-cta{display:none}.menu-toggle{display:block;margin-left:auto}
      .mobile-menu{inset:68px 0 0}.hero{min-height:650px}.hero-content{padding:70px 0 172px}
      .hero-art:before{right:4%;width:270px;height:460px;opacity:.7}.hero-art:after{display:none}
      h1{font-size:clamp(34px,9vw,44px)}.hero p{font-size:16px}.hero-metrics{bottom:28px;flex-wrap:wrap;gap:12px}.metric{padding:0 13px 0 0;border:0}
      .next-rail{left:20px;right:auto;font-size:11px}.section{padding:64px 0}.section-head{display:block;margin-bottom:27px}.section-head p{margin-top:14px}
      .compact-tags{grid-template-columns:repeat(2,1fr)}.scene-layout,.faq-layout,.lead-box{grid-template-columns:1fr}.scene-nav{display:flex;overflow-x:auto;border-left:0;border-bottom:1px solid var(--line)}
      .scene-tab{min-width:150px;border-left:0;border-bottom:2px solid transparent;margin:0}.scene-tab.active{border-left:0;border-bottom-color:var(--pink)}
      .case-feature{grid-template-columns:1fr}.case-cover{min-height:270px}.case-info{padding:26px}.case-list{grid-template-columns:1fr}
      .pricing-cards{grid-template-columns:1fr}.price-card.recommended,.price-card.custom{margin-top:0}.band-grid{grid-template-columns:1fr}.insight-layout{grid-template-columns:1fr}
      .article-row{grid-template-columns:45px 1fr auto}.lead-form{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:520px){
      body{font-size:16px}.container{width:calc(100% - 32px)}
      .brand{font-size:14px}.brand-mark{width:25px;height:25px}.hero{min-height:640px}.hero-content{padding-top:58px}
      .hero-actions .btn-primary,.hero-actions .btn-secondary{width:100%}.hero-metrics{gap:8px}.metric{font-size:11px}.metric strong{font-size:12px}
      .feature-main{min-height:315px;padding:23px}.feature-side{gap:12px}.feature-card{min-height:155px;padding:20px}.compact-tags{gap:0}.compact-tag{font-size:13px}
      .topic-card{min-width:292px;width:292px}.section-head h2,.faq-intro h2,.pricing-intro h2{font-size:28px}.case-info h3{font-size:23px}
      .cta-inner{display:block}.cta-inner .btn-primary{margin-top:18px;width:100%}.lead-box{padding:22px}.footer-grid{grid-template-columns:1fr;gap:22px}.copyright{display:block}.copyright span{display:block;margin-bottom:5px}
    }

/* roulang page: category1 */
:root{
 --bg:#171218;--bg-soft:#1d1720;--surface:#241a26;--surface-2:#2b202d;
 --line:#40303b;--line-soft:rgba(246,239,243,.12);--text:#f6eff3;
 --muted:#c9bbc3;--dim:#8e808a;--pink:#e64b9a;--pink-soft:rgba(230,75,154,.16);
 --coral:#ff856d;--mint:#62d6c7;--shadow:0 18px 42px rgba(0,0,0,.28);
 --radius:6px;--radius-lg:8px;--container:1200px;
 --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.7;overflow-x:hidden}
body.menu-open{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
img{display:block;max-width:100%}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(36px,5vw,54px);line-height:1.18;margin:18px 0}
h2{font-size:34px;line-height:1.25;margin:12px 0}
h3{font-size:20px;line-height:1.4;margin:0 0 8px}
.container{width:min(var(--container),calc(100% - 64px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:100;height:74px;border-bottom:1px solid rgba(230,75,154,.5);background:rgba(23,18,24,.94);backdrop-filter:blur(14px)}
.nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:center;gap:11px;min-width:max-content;font-size:17px;font-weight:800}
.brand-mark{width:29px;height:29px;position:relative;border:1px solid var(--pink);background:linear-gradient(135deg,rgba(230,75,154,.24),rgba(255,133,109,.06))}
.brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--pink)}
.brand-mark:before{width:1px;height:100%;left:8px;top:0;box-shadow:8px 0 0 rgba(230,75,154,.55)}
.brand-mark:after{width:100%;height:2px;bottom:5px;left:0;background:var(--coral)}
.desktop-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.desktop-nav a{position:relative;padding:23px 13px 21px;color:var(--muted);font-size:14px;transition:color .2s}
.desktop-nav a:after{content:"";position:absolute;bottom:0;left:13px;right:13px;height:2px;transform:scaleX(0);background:var(--pink);box-shadow:0 0 12px var(--pink);transition:transform .2s}
.desktop-nav a:hover,.desktop-nav a.active{color:var(--text)}
.desktop-nav a:hover:after,.desktop-nav a.active:after{transform:scaleX(1)}
.desktop-nav a.active{color:var(--pink)}
.nav-cta,.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:42px;padding:0 17px;border:1px solid var(--pink);border-radius:4px;background:var(--pink);color:#1b1218;font-weight:800;font-size:14px;transition:.2s}
.nav-cta:hover,.btn-primary:hover{background:var(--coral);border-color:var(--coral);transform:translateY(-1px)}
.nav-cta:active,.btn-primary:active,.btn-secondary:active{transform:translateY(1px)}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:4px;background:transparent;color:var(--text);font-size:22px}
.mobile-menu{display:none;position:fixed;inset:74px 0 0;background:#171218;padding:28px 20px;z-index:90}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:16px 14px;border-bottom:1px solid var(--line-soft);color:var(--muted);font-size:18px}
.mobile-menu a.active{color:var(--pink);border-left:3px solid var(--pink);background:var(--pink-soft)}
.mobile-menu .nav-cta{width:100%;margin-top:24px}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px}
.page-hero{padding:76px 0 68px;border-bottom:1px solid var(--line);background:linear-gradient(120deg,#211720,#171218 72%)}
.breadcrumb{display:flex;gap:9px;align-items:center;color:var(--dim);font-size:13px}
.breadcrumb span{color:var(--pink)}
.page-hero-inner{display:flex;justify-content:space-between;align-items:end;gap:50px}
.page-hero-copy{max-width:720px}
.page-hero p{max-width:650px;color:var(--muted);font-size:17px;margin-bottom:24px}
.hero-tags,.filter-bar{display:flex;flex-wrap:wrap;gap:9px}
.tag,.filter-bar a{display:inline-flex;align-items:center;min-height:32px;padding:0 11px;border:1px solid var(--line);border-radius:4px;color:var(--muted);font-size:13px;background:rgba(36,26,38,.55)}
.tag.active,.filter-bar a.active{border-color:var(--pink);color:var(--pink);background:var(--pink-soft)}
.page-mark{width:230px;height:180px;border:1px solid var(--line);position:relative;background:repeating-linear-gradient(0deg,transparent 0,transparent 23px,rgba(98,214,199,.1) 24px),linear-gradient(145deg,#3a2536,#211821);overflow:hidden}
.page-mark:before{content:"01";position:absolute;right:18px;bottom:10px;font-size:86px;line-height:1;color:rgba(230,75,154,.22);font-weight:800}
.page-mark:after{content:"成熟主题 / 选择参考";position:absolute;left:18px;top:18px;color:var(--mint);font-size:12px;letter-spacing:.08em}
.section{padding:84px 0}
.section.soft{background:var(--bg-soft)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px}
.section-index{display:flex;align-items:center;gap:10px;color:var(--mint);font-size:13px;font-weight:700;letter-spacing:.08em}
.section-index:before{content:"";width:25px;height:1px;background:var(--mint)}
.section-intro{color:var(--muted);max-width:580px;margin:0}
.filter-bar{padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:28px}
.guide-grid{display:grid;grid-template-columns:1.65fr 1fr;gap:18px}
.guide-feature,.guide-card,.path-card,.compare-panel,.faq-item,.contact-form{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow);border-radius:var(--radius);overflow:hidden}
.guide-feature{grid-row:span 2;display:flex;flex-direction:column}
.cover{position:relative;overflow:hidden;background:linear-gradient(135deg,#42263c,#221821 65%);aspect-ratio:16/9}
.cover:before{content:"";position:absolute;inset:18% 24% 0 30%;border:1px solid rgba(246,239,243,.25);border-bottom:0;border-radius:48% 48% 0 0;background:linear-gradient(150deg,rgba(255,133,109,.18),rgba(230,75,154,.08))}
.cover:after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,transparent 0,transparent 52px,rgba(98,214,199,.08) 53px)}
.guide-feature .cover{aspect-ratio:2/1}
.card-body{padding:22px}
.card-meta{display:flex;justify-content:space-between;gap:12px;color:var(--dim);font-size:12px;margin-bottom:10px}
.card-body p{color:var(--muted);font-size:15px;margin-bottom:14px}
.key-list{list-style:none;padding:0;margin:0 0 18px;display:grid;gap:7px;color:var(--muted);font-size:14px}
.key-list li:before{content:"＋";color:var(--mint);margin-right:8px}
.text-link{color:var(--pink);font-weight:700;font-size:14px}
.text-link:hover{color:var(--coral)}
.guide-card{display:grid;grid-template-columns:132px 1fr;min-height:170px}
.guide-card .cover{height:100%;aspect-ratio:auto}
.guide-card .card-body{padding:17px}
.info-strip{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:44px}
.info-step{padding:22px 20px;border-right:1px solid var(--line)}
.info-step:last-child{border-right:0}
.info-step strong{display:block;color:var(--pink);font-size:24px;margin-bottom:6px}
.info-step span{color:var(--muted);font-size:14px}
.choice-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}
.choice-list{display:grid;gap:10px}
.choice-item{padding:17px 18px;border-left:2px solid var(--line);background:rgba(36,26,38,.5);transition:.2s}
.choice-item:hover{border-left-color:var(--pink);background:var(--pink-soft)}
.choice-item strong{display:block;font-size:17px}
.choice-item span{color:var(--muted);font-size:14px}
.consult-band{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:32px 38px;border:1px solid rgba(230,75,154,.65);background:#241a26}
.consult-band p{color:var(--muted);margin:0}
.faq-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:60px}
.faq-list{display:grid;gap:10px}
.faq-item{box-shadow:none}
.faq-question{width:100%;display:flex;justify-content:space-between;gap:20px;text-align:left;padding:19px 20px;border:0;background:transparent;color:var(--text);font-weight:700}
.faq-question span:last-child{color:var(--pink);font-size:20px}
.faq-answer{display:none;padding:0 20px 19px;color:var(--muted);font-size:14px}
.faq-item.open{border-color:var(--pink);background:var(--pink-soft)}
.faq-item.open .faq-answer{display:block}
.contact-note{color:var(--muted);font-size:15px}
.site-footer{border-top:1px solid var(--pink);padding:48px 0 22px;background:#120e13}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:50px}
.footer-brand p{color:var(--dim);max-width:330px;font-size:14px}
.footer-title{font-weight:800;margin-bottom:13px}
.footer-links{display:grid;gap:8px;color:var(--muted);font-size:14px}
.footer-links a:hover{color:var(--pink)}
.copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);margin-top:38px;padding-top:18px;color:var(--dim);font-size:12px}
@media(max-width:900px){
 .container{width:min(var(--container),calc(100% - 48px))}
 .desktop-nav,.nav-cta{display:none}.menu-toggle{display:block}
 .page-hero-inner{align-items:start}.page-mark{width:190px;flex:none}
 .guide-grid,.choice-layout,.faq-layout{grid-template-columns:1fr}
 .info-strip{grid-template-columns:repeat(2,1fr)}
 .info-step:nth-child(2){border-right:0}.info-step:nth-child(-n+2){border-bottom:1px solid var(--line)}
}
@media(max-width:640px){
 .container{width:calc(100% - 32px)}
 h1{font-size:36px}.page-hero{padding:52px 0}
 .page-hero-inner{display:block}.page-mark{display:none}
 .section{padding:60px 0}.section-head{display:block}.section-head .section-intro{margin-top:12px}
 .guide-card{grid-template-columns:1fr}.guide-card .cover{height:auto;aspect-ratio:16/9}
 .info-strip{grid-template-columns:1fr}.info-step{border-right:0!important;border-bottom:1px solid var(--line)}
 .info-step:last-child{border-bottom:0}
 .consult-band{display:block;padding:25px 22px}.consult-band .btn-primary{margin-top:20px}
 .footer-grid{grid-template-columns:1fr;gap:28px}.copyright{display:block}.copyright span{display:block;margin-top:5px}
}

/* roulang page: category2 */
:root{
 --bg:#171218;
 --bg-soft:#1d1720;
 --surface:#241a26;
 --surface-2:#2b202d;
 --line:#40303b;
 --line-soft:rgba(246,239,243,.12);
 --text:#f6eff3;
 --muted:#c9bbc3;
 --dim:#8e808a;
 --pink:#e64b9a;
 --pink-soft:rgba(230,75,154,.16);
 --coral:#ff856d;
 --mint:#62d6c7;
 --shadow:0 18px 42px rgba(0,0,0,.28);
 --radius:6px;
 --radius-lg:8px;
 --container:1200px;
 --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;background:var(--bg);color:var(--text);font-family:var(--font);
 font-size:16px;line-height:1.7;overflow-x:hidden;
}
body.menu-open{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
img{display:block;max-width:100%}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(36px,4vw,54px);line-height:1.15;margin-bottom:20px}
h2{font-size:clamp(28px,3vw,36px);line-height:1.25;margin:12px 0 16px}
h3{font-size:20px;line-height:1.4;margin:0 0 10px}
.container{width:min(var(--container),calc(100% - 64px));margin:0 auto}
.site-header{
 position:sticky;top:0;z-index:100;height:74px;border-bottom:1px solid rgba(230,75,154,.5);
 background:rgba(23,18,24,.94);backdrop-filter:blur(14px);
}
.nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:center;gap:11px;min-width:max-content;font-size:17px;font-weight:800}
.brand-mark{
 width:29px;height:29px;position:relative;border:1px solid var(--pink);
 background:linear-gradient(135deg,rgba(230,75,154,.24),rgba(255,133,109,.06));
}
.brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--pink)}
.brand-mark:before{width:1px;height:100%;left:8px;top:0;box-shadow:8px 0 0 rgba(230,75,154,.55)}
.brand-mark:after{width:100%;height:2px;bottom:5px;left:0;background:var(--coral)}
.desktop-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.desktop-nav a{
 position:relative;padding:23px 13px 21px;color:var(--muted);font-size:14px;
 transition:color .2s ease
}
.desktop-nav a:after{
 content:"";position:absolute;bottom:0;left:13px;right:13px;height:2px;
 transform:scaleX(0);background:var(--pink);box-shadow:0 0 12px var(--pink);
 transition:transform .2s ease
}
.desktop-nav a:hover,.desktop-nav a.active{color:var(--text)}
.desktop-nav a:hover:after,.desktop-nav a.active:after{transform:scaleX(1)}
.desktop-nav a.active{color:var(--pink)}
.nav-cta,.btn-primary{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:42px;
 padding:0 17px;border:1px solid var(--pink);border-radius:4px;background:var(--pink);
 color:#1b1218;font-weight:800;font-size:14px;
 transition:background .2s ease,transform .2s ease,border-color .2s ease
}
.nav-cta:hover,.btn-primary:hover{background:var(--coral);border-color:var(--coral);transform:translateY(-1px)}
.nav-cta:active,.btn-primary:active,.btn-secondary:active{transform:translateY(1px)}
.menu-toggle{
 display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:4px;
 background:transparent;color:var(--text);font-size:22px
}
.mobile-menu{
 display:none;position:fixed;inset:74px 0 0;background:var(--bg);padding:28px 20px;z-index:90
}
.mobile-menu.open{display:block}
.mobile-menu a{
 display:block;padding:16px 14px;border-bottom:1px solid var(--line-soft);color:var(--muted);font-size:18px
}
.mobile-menu a.active{color:var(--pink);border-left:3px solid var(--pink);background:var(--pink-soft)}
.mobile-menu .nav-cta{width:100%;margin-top:24px}
.page-banner{
 position:relative;overflow:hidden;padding:88px 0 82px;border-bottom:1px solid var(--line);
 background:var(--bg-soft)
}
.page-banner:before{
 content:"";position:absolute;inset:0;opacity:.5;
 background:repeating-linear-gradient(90deg,transparent 0,transparent 87px,rgba(98,214,199,.08) 88px,transparent 89px)
}
.banner-grid{position:relative;display:grid;grid-template-columns:1.2fr .8fr;gap:60px;align-items:center}
.breadcrumb{display:flex;gap:9px;color:var(--dim);font-size:13px;margin-bottom:22px}
.breadcrumb a:hover{color:var(--mint)}
.banner-copy p{max-width:650px;color:var(--muted);font-size:17px}
.banner-art{
 min-height:235px;position:relative;border-left:1px solid var(--pink);
 display:flex;align-items:center;justify-content:center
}
.banner-art:before{
 content:"02";font-size:150px;font-weight:900;line-height:1;color:rgba(230,75,154,.13);
 letter-spacing:0
}
.banner-art:after{
 content:"场景 / 选择 / 比较";position:absolute;right:8%;top:25%;color:var(--mint);
 font-size:13px;letter-spacing:.12em;writing-mode:vertical-rl
}
.tag-row,.filter-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:25px}
.tag{
 display:inline-flex;align-items:center;min-height:28px;padding:3px 10px;border:1px solid var(--line);
 color:var(--muted);font-size:12px;border-radius:4px
}
.tag.hot{border-color:rgba(230,75,154,.7);color:var(--pink)}
.section{padding:92px 0}
.section.soft{background:var(--bg-soft)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:38px}
.section-index{display:flex;align-items:center;gap:10px;color:var(--mint);font-size:13px;font-weight:700;letter-spacing:.09em}
.section-index:before{content:"";width:25px;height:1px;background:var(--mint)}
.section-lead{max-width:590px;color:var(--muted);margin:0}
.path-rail{
 display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
 border:1px solid var(--line);box-shadow:var(--shadow)
}
.path-item{
 min-height:270px;padding:27px 24px;background:var(--surface);position:relative;
 transition:background .2s ease,transform .2s ease
}
.path-item:hover{background:var(--surface-2);transform:translateY(-3px);z-index:2}
.path-item.active{border-top:3px solid var(--coral)}
.path-num{color:var(--coral);font-size:13px;font-weight:800;letter-spacing:.12em}
.path-item h3{margin-top:52px;color:var(--text)}
.path-item p{color:var(--muted);font-size:14px;margin-bottom:17px}
.text-link{color:var(--pink);font-size:14px;font-weight:700}
.text-link span{display:inline-block;margin-left:6px;transition:transform .2s ease}
.text-link:hover span{transform:translateX(4px)}
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.compare-panel{
 padding:31px;border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow);
 position:relative
}
.compare-panel.recommended{border-color:rgba(230,75,154,.8);margin-top:28px}
.compare-panel.custom{border-color:rgba(255,133,109,.7)}
.compare-panel.recommended:before{
 content:"更适合先行了解";position:absolute;right:20px;top:-14px;
 padding:3px 10px;background:var(--pink);color:#1b1218;font-size:12px;font-weight:800
}
.compare-top{display:flex;justify-content:space-between;gap:18px;align-items:start;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:21px}
.compare-label{color:var(--mint);font-size:13px}
.compare-panel p{color:var(--muted);font-size:14px}
.compare-list{list-style:none;margin:22px 0 26px;padding:0}
.compare-list li{position:relative;padding:9px 0 9px 22px;border-bottom:1px solid var(--line-soft);color:var(--muted);font-size:14px}
.compare-list li:before{content:"+";position:absolute;left:0;color:var(--coral);font-weight:800}
.answer-layout{display:grid;grid-template-columns:280px 1fr;gap:55px}
.number-list{list-style:none;padding:0;margin:0}
.number-list li{display:flex;gap:14px;align-items:start;padding:16px 0;border-bottom:1px solid var(--line-soft);color:var(--muted)}
.number-list li span{color:var(--coral);font-weight:800}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-question{
 width:100%;min-height:64px;padding:17px 4px;background:none;border:0;color:var(--text);
 display:flex;align-items:center;justify-content:space-between;text-align:left;font-weight:700
}
.faq-question:hover{color:var(--coral)}
.faq-question:focus-visible,.btn-primary:focus-visible,.btn-secondary:focus-visible,.nav-cta:focus-visible,.menu-toggle:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
 outline:2px solid var(--mint);outline-offset:3px
}
.faq-icon{font-size:23px;color:var(--coral);font-weight:400}
.faq-answer{display:none;padding:0 35px 19px 4px;color:var(--muted);font-size:14px}
.faq-item.open .faq-answer{display:block}
.faq-item.open .faq-question{color:var(--pink)}
.related-rail{
 display:grid;grid-template-columns:repeat(3,1fr);gap:18px
}
.related-card{border:1px solid var(--line);background:var(--surface);transition:.2s ease}
.related-card:hover{border-color:var(--pink);box-shadow:var(--shadow);transform:translateY(-3px)}
.media{
 aspect-ratio:3 / 2;position:relative;overflow:hidden;border-bottom:1px solid var(--line);
 background:
 linear-gradient(140deg,rgba(230,75,154,.27),transparent 55%),
 repeating-linear-gradient(0deg,rgba(98,214,199,.08) 0 1px,transparent 1px 20px),
 #30202f
}
.media:after{content:"";position:absolute;inset:20% 20% 0 48%;border-left:1px solid rgba(246,239,243,.25);border-top:1px solid rgba(246,239,243,.15);transform:skew(-12deg)}
.media-label{position:absolute;left:15px;bottom:13px;z-index:1;color:var(--text);font-size:12px}
.related-body{padding:20px}
.related-body p{color:var(--muted);font-size:14px;margin-bottom:10px}
.consult-band{padding:54px 0;border-top:1px solid var(--pink);border-bottom:1px solid var(--pink);background:var(--surface)}
.consult-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:55px;align-items:start}
.consult-copy p{color:var(--muted);max-width:440px}
.consult-form{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;color:var(--muted)}
.field input,.field select,.field textarea{
 width:100%;border:1px solid var(--line);border-radius:4px;background:var(--bg);
 color:var(--text);padding:11px 12px;min-height:44px
}
.field textarea{min-height:92px;resize:vertical}
.checkline{grid-column:1/-1;display:flex;gap:9px;align-items:center;color:var(--dim);font-size:13px}
.checkline input{accent-color:var(--pink)}
.form-submit{grid-column:1/-1;display:flex;justify-content:flex-end}
.site-footer{padding:54px 0 22px;border-top:1px solid rgba(230,75,154,.55);background:#120e13}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px;padding-bottom:40px}
.footer-brand p{max-width:330px;color:var(--dim);font-size:14px;margin:17px 0 0}
.footer-title{color:var(--text);font-weight:800;margin-bottom:14px}
.footer-links{display:grid;gap:8px;color:var(--dim);font-size:14px}
.footer-links a:hover{color:var(--pink)}
.copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line-soft);padding-top:18px;color:var(--dim);font-size:12px}
@media(max-width:1024px){
 .container{width:min(var(--container),calc(100% - 48px))}
 .desktop-nav{gap:0}
 .desktop-nav a{padding-left:9px;padding-right:9px}
 .path-rail{grid-template-columns:repeat(2,1fr)}
 .banner-grid{gap:30px}
}
@media(max-width:768px){
 .container{width:calc(100% - 40px)}
 .desktop-nav,.site-header>.nav-wrap>.nav-cta{display:none}
 .menu-toggle{display:block}
 .page-banner{padding:58px 0 54px}
 .banner-grid{grid-template-columns:1fr;gap:25px}
 .banner-art{min-height:115px;border-left:0;border-top:1px solid var(--pink);justify-content:flex-start}
 .banner-art:before{font-size:96px}
 .banner-art:after{right:10%;top:30%;writing-mode:horizontal-tb}
 .section{padding:64px 0}
 .section-head{display:block;margin-bottom:28px}
 .section-lead{margin-top:15px}
 .path-rail,.compare-grid,.answer-layout,.consult-grid{grid-template-columns:1fr}
 .path-item{min-height:220px}
 .path-item h3{margin-top:30px}
 .compare-panel.recommended{margin-top:0}
 .related-rail{display:flex;overflow-x:auto;padding-bottom:8px;scroll-snap-type:x mandatory}
 .related-card{min-width:78%;scroll-snap-align:start}
 .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
 .footer-brand{grid-column:1/-1}
 .copyright{display:block}
 .copyright span{display:block;margin-top:6px}
 .consult-form{grid-template-columns:1fr}
 .field.full,.checkline,.form-submit{grid-column:auto}
 .form-submit{justify-content:stretch}
 .form-submit .btn-primary{width:100%}
}
@media(max-width:520px){
 .container{width:calc(100% - 32px)}
 h1{font-size:35px}
 .brand{font-size:15px}
 .path-rail{grid-template-columns:1fr}
 .path-item{min-height:190px}
 .compare-panel{padding:23px}
 .footer-grid{grid-template-columns:1fr}
 .footer-brand{grid-column:auto}
 .page-banner:before{opacity:.25}
}