/* roulang page: index */
:root{
      --bg:#100d15;
      --bg-soft:#17121e;
      --panel:#201827;
      --panel-2:#281d31;
      --line:#3b2d48;
      --line-light:#62456d;
      --text:#f8f1f5;
      --muted:#b7a9b8;
      --purple:#b653bc;
      --purple-deep:#813b8c;
      --coral:#ff9a76;
      --lime:#d7e979;
      --danger:#ff756e;
      --radius:16px;
      --shadow:0 18px 55px rgba(0,0,0,.28);
      --ease:180ms ease;
    }
    *,*:before,*:after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;background:var(--bg);color:var(--text);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      font-size:16px;line-height:1.8;
      background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
      background-size:48px 48px;
    }
    a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease)}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(1220px,calc(100% - 48px));margin:0 auto}
    .info-bar{height:40px;background:#0b090f;border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}
    .info-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:18px}
    .info-domain{color:var(--coral);letter-spacing:.08em}
    .info-note{display:flex;align-items:center;gap:9px}
    .status-dot{width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 12px var(--lime)}
    .info-action{color:var(--lime);white-space:nowrap}
    .info-action:hover{color:#fff}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(16,13,21,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}
    .nav-shell{min-height:78px;display:flex;align-items:center;gap:30px}
    .brand{display:flex;align-items:center;gap:12px;min-width:245px}
    .brand-mark{width:34px;height:34px;border-radius:10px;background:var(--purple);display:grid;place-items:center;color:#160c1a;font-weight:900}
    .brand-name{font-size:17px;font-weight:800;letter-spacing:.04em}
    .main-nav{display:flex;align-items:center;gap:7px;flex:1}
    .main-nav a{position:relative;padding:10px 14px;border-radius:9px;color:var(--muted);font-size:14px}
    .main-nav a:hover,.main-nav a:focus{color:#fff;background:var(--panel)}
    .main-nav a.active{color:#fff;background:rgba(182,83,188,.17)}
    .main-nav a.active:after{content:"";position:absolute;bottom:3px;left:14px;right:14px;height:2px;background:var(--coral)}
    .nav-cta{padding:11px 18px;border:1px solid var(--coral);border-radius:9px;color:var(--coral);font-size:14px;white-space:nowrap}
    .nav-cta:hover{background:var(--coral);color:#24101a}
    .menu-toggle{display:none}
    .hero{padding:82px 0 58px;position:relative;overflow:hidden}
    .hero:before{content:"";position:absolute;width:500px;height:300px;right:-110px;top:15px;background:rgba(182,83,188,.18);filter:blur(90px);pointer-events:none}
    .hero-top{display:flex;justify-content:space-between;align-items:flex-end;border-bottom:1px solid var(--line);padding-bottom:22px;margin-bottom:28px}
    .eyebrow{color:var(--coral);font-size:12px;letter-spacing:.18em}
    .hero-code{font-size:12px;color:var(--muted)}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(36px,5vw,64px);line-height:1.18;letter-spacing:-.045em;margin-bottom:22px;max-width:790px}
    h1 span{color:var(--coral)}
    .hero-copy{font-size:17px;color:var(--muted);max-width:760px;line-height:1.9;margin-bottom:28px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:46px}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:10px;border:1px solid transparent;font-weight:700;font-size:14px;transition:all var(--ease)}
    .btn-primary{background:var(--coral);color:#28121b}
    .btn-primary:hover{background:#ffb09a;transform:translateY(-2px);box-shadow:0 10px 25px rgba(255,154,118,.2)}
    .btn-secondary{border-color:var(--line-light);background:var(--panel);color:var(--text)}
    .btn-secondary:hover{border-color:var(--purple);background:var(--panel-2);transform:translateY(-2px)}
    .btn:focus,.nav-cta:focus,a:focus,input:focus,select:focus,textarea:focus{outline:3px solid rgba(215,233,121,.55);outline-offset:3px}
    .metric-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:10px}
    .metric{background:rgba(32,24,39,.92);border:1px solid var(--line);border-radius:12px;padding:20px 18px;position:relative;min-height:124px}
    .metric:first-child{border-color:var(--purple)}
    .metric:before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;background:var(--purple);border-radius:3px}
    .metric-label{font-size:12px;color:var(--muted);display:flex;justify-content:space-between}
    .metric-value{font-size:32px;font-weight:800;line-height:1.25;margin:11px 0 5px;color:var(--text)}
    .metric small{font-size:12px;color:var(--muted)}
    .metric-state{color:var(--lime);font-size:11px}
    .section{padding:78px 0}
    .section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:30px}
    .section-kicker{color:var(--purple);font-size:12px;letter-spacing:.13em;margin-bottom:8px}
    h2{font-size:clamp(27px,3.5vw,40px);line-height:1.3;margin-bottom:8px;letter-spacing:-.03em}
    .section-intro{color:var(--muted);max-width:630px;margin-bottom:0}
    .text-link{color:var(--coral);font-size:14px;white-space:nowrap}
    .text-link:hover{color:#fff}
    .track{display:flex;gap:14px;overflow-x:auto;padding:5px 2px 18px;scrollbar-color:var(--purple) var(--panel)}
    .track-card{flex:0 0 245px;min-height:180px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px;position:relative;overflow:hidden}
    .track-card:hover{transform:translateY(-4px);border-color:var(--purple);box-shadow:var(--shadow)}
    .track-card:after{content:"";position:absolute;width:100px;height:100px;right:-32px;bottom:-40px;border:1px solid var(--purple);border-radius:50%;opacity:.5}
    .track-no{color:var(--coral);font-size:12px}
    .track-card h3{font-size:20px;margin:30px 0 8px}
    .track-card p{font-size:13px;color:var(--muted);line-height:1.65;margin-bottom:16px}
    .tag-row{display:flex;flex-wrap:wrap;gap:7px}
    .tag{display:inline-block;border:1px solid var(--line-light);border-radius:5px;padding:2px 8px;color:var(--muted);font-size:12px}
    .matrix{display:grid;grid-template-columns:1.1fr 1fr;gap:16px}
    .matrix-panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:25px}
    .matrix-panel.wide{grid-column:span 2}
    .matrix-title{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:16px;margin-bottom:0}
    .matrix-title h3{font-size:20px;margin:0}
    .matrix-item{display:grid;grid-template-columns:45px 1fr auto;gap:15px;align-items:center;padding:18px 0;border-bottom:1px solid rgba(59,45,72,.7)}
    .matrix-item:last-child{border-bottom:0}
    .matrix-number{color:var(--coral);font-weight:800}
    .matrix-item strong{display:block;font-size:15px;margin-bottom:3px}
    .matrix-item span{font-size:13px;color:var(--muted)}
    .mini-btn{font-size:12px;color:var(--lime);border:1px solid rgba(215,233,121,.45);padding:5px 9px;border-radius:6px}
    .mini-btn:hover{background:var(--lime);color:#1b1910}
    .compare{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .compare-col{background:var(--panel);padding:30px}
    .compare-col.highlight{background:linear-gradient(135deg,#2a1d32,#211727)}
    .compare-col h3{font-size:21px;margin-bottom:20px}
    .compare-list{list-style:none;padding:0;margin:0}
    .compare-list li{display:flex;justify-content:space-between;gap:15px;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px}
    .compare-list li span:last-child{color:var(--lime);white-space:nowrap}
    .feature-band{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:28px}
    .feature{padding:22px;background:var(--bg-soft);border-left:3px solid var(--purple);border-radius:0 12px 12px 0}
    .feature h3{font-size:17px;margin-bottom:7px}
    .feature p{font-size:14px;color:var(--muted);margin:0;line-height:1.7}
    .accordion{margin:0;border:0;background:transparent}
    .accordion-item{border:1px solid var(--line)!important;background:var(--panel);margin-bottom:10px;border-radius:10px;overflow:hidden}
    .accordion-title{color:var(--text);font-size:16px;font-weight:700;padding:19px 22px;border:0}
    .accordion-title:hover,.accordion-title:focus{background:var(--panel-2);color:#fff}
    .accordion-content{background:#191320;border:0;color:var(--muted);font-size:14px;padding:0 22px 20px;line-height:1.8}
    .faq-layout{display:grid;grid-template-columns:180px 1fr;gap:45px}
    .faq-index{color:var(--purple);font-size:14px;border-top:2px solid var(--purple);padding-top:15px}
    .cta-section{padding:72px 0}
    .cta-box{background:var(--panel);border:1px solid var(--purple);border-radius:20px;padding:38px;display:grid;grid-template-columns:1fr 1.2fr;gap:40px;box-shadow:0 0 55px rgba(129,59,140,.12)}
    .cta-box h2{margin-bottom:13px}
    .cta-box p{color:var(--muted);line-height:1.8}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
    label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
    input,select,textarea{width:100%;background:#130f18;color:var(--text);border:1px solid var(--line-light);border-radius:8px;padding:11px 13px;min-height:45px}
    input::placeholder,textarea::placeholder{color:#756878}
    input:hover,select:hover,textarea:hover{border-color:var(--purple)}
    textarea{min-height:92px;resize:vertical}
    .full{grid-column:1/-1}
    .form-note{font-size:12px;color:#8d7f91;margin-top:12px}
    .form-message{display:none;margin-top:10px;color:var(--lime);font-size:13px}
    footer{border-top:1px solid var(--line);background:#0b090f;padding:35px 0 20px}
    .footer-main{display:flex;justify-content:space-between;gap:30px;align-items:flex-start}
    .footer-brand{max-width:300px}
    .footer-brand .brand-name{display:block;margin-bottom:9px}
    .footer-brand p{font-size:13px;color:var(--muted);line-height:1.7}
    .footer-links{display:flex;gap:28px;flex-wrap:wrap}
    .footer-links a{font-size:13px;color:var(--muted)}
    .footer-links a:hover{color:var(--coral)}
    .footer-bottom{display:flex;justify-content:space-between;border-top:1px solid var(--line);margin-top:28px;padding-top:16px;color:#776b7a;font-size:12px}
    .top-link{color:var(--lime)}
    @media(max-width:992px){
      .brand{min-width:210px}.metric-grid{grid-template-columns:repeat(2,1fr)}
      .matrix{grid-template-columns:1fr}.matrix-panel.wide{grid-column:auto}
      .cta-box{grid-template-columns:1fr}
    }
    @media(max-width:768px){
      .container{width:min(100% - 32px,620px)}
      .nav-shell{min-height:66px;justify-content:space-between}.menu-toggle{display:block;background:transparent;border:1px solid var(--line-light);color:var(--text);border-radius:8px;padding:7px 12px}
      .main-nav{display:none;position:absolute;top:66px;left:0;right:0;background:#120e17;border-bottom:1px solid var(--line);padding:12px 16px;flex-direction:column;align-items:stretch}
      .main-nav.is-open{display:flex}.main-nav a{padding:12px}.nav-cta{display:none}
      .brand-name{font-size:15px}.hero{padding:58px 0 40px}.hero-top{align-items:flex-start;flex-direction:column;gap:8px}
      .section{padding:58px 0}.section-head{display:block}.text-link{display:inline-block;margin-top:15px}
      .faq-layout{grid-template-columns:1fr;gap:20px}.faq-index{border-top:0;border-left:2px solid var(--purple);padding:0 0 0 12px}
      .feature-band{grid-template-columns:1fr}.footer-main{display:block}.footer-links{margin-top:25px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:8px}
    }
    @media(max-width:520px){
      .info-bar{font-size:11px}.info-note{display:none}.info-inner{justify-content:space-between}
      h1{font-size:35px}.hero-copy{font-size:15px}.hero-actions .btn{width:100%}
      .metric-grid{grid-template-columns:1fr 1fr;gap:8px}.metric{padding:15px 12px;min-height:110px}.metric-value{font-size:26px}
      .matrix-panel,.compare-col,.cta-box{padding:20px}.compare{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.full{grid-column:auto}
      .matrix-item{grid-template-columns:32px 1fr}.matrix-item .mini-btn{grid-column:2;justify-self:start}
    }

/* roulang page: category1 */
:root{
      --bg:#100d15;--bg-soft:#17121e;--panel:#201827;--panel-2:#281d31;
      --line:#3b2d48;--line-light:#62456d;--text:#f8f1f5;--muted:#b7a9b8;
      --purple:#b653bc;--purple-deep:#813b8c;--coral:#ff9a76;--lime:#d7e979;
      --danger:#ff756e;--radius:16px;--shadow:0 18px 55px rgba(0,0,0,.28);--ease:180ms ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;font-size:16px;line-height:1.8;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:48px 48px}
    a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease)}
    img{max-width:100%;display:block} button,input,select,textarea{font:inherit} button{cursor:pointer}
    .container{width:min(1220px,calc(100% - 48px));margin:0 auto}
    .topline{height:36px;border-bottom:1px solid var(--line);background:#0d0a12;color:var(--muted);font-size:12px}
    .topline-inner{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px}
    .info-domain{color:var(--coral);letter-spacing:.08em}.status-note{display:flex;align-items:center;gap:8px}
    .status-dot{width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 12px rgba(215,233,121,.7)}
    .top-action{color:var(--lime);white-space:nowrap}.top-action:hover{color:#fff}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(16,13,21,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}
    .nav-shell{min-height:78px;display:flex;align-items:center;gap:30px}
    .brand{display:flex;align-items:center;gap:12px;min-width:245px}
    .brand-mark{width:34px;height:34px;border-radius:10px;background:var(--purple);display:grid;place-items:center;color:#160c1a;font-weight:900}
    .brand-name{font-size:17px;font-weight:800;letter-spacing:.04em}
    .main-nav{display:flex;align-items:center;gap:7px;flex:1}
    .main-nav a{position:relative;padding:10px 14px;border-radius:9px;color:var(--muted);font-size:14px}
    .main-nav a:hover,.main-nav a:focus{color:#fff;background:var(--panel)}
    .main-nav a.active{color:#fff;background:rgba(182,83,188,.17)}
    .main-nav a.active:after{content:"";position:absolute;bottom:3px;left:14px;right:14px;height:2px;background:var(--coral)}
    .nav-cta{padding:11px 18px;border:1px solid var(--coral);border-radius:9px;color:var(--coral);font-size:14px;white-space:nowrap}
    .nav-cta:hover{background:var(--coral);color:#24101a}
    .menu-toggle{display:none;background:transparent;border:1px solid var(--line-light);color:var(--text);border-radius:8px;padding:7px 11px}
    .hero{padding:66px 0 48px;position:relative;overflow:hidden}
    .hero:before{content:"";position:absolute;width:520px;height:300px;right:-120px;top:-20px;background:rgba(182,83,188,.18);filter:blur(90px);pointer-events:none}
    .breadcrumb{font-size:13px;color:var(--muted);margin-bottom:25px}.breadcrumb a{color:var(--coral)}.breadcrumb span{margin:0 8px;color:var(--line-light)}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:56px;align-items:end}
    .eyebrow,.section-kicker{color:var(--coral);font-size:12px;letter-spacing:.16em}
    h1,h2,h3,p{margin-top:0}h1{font-size:clamp(36px,5vw,58px);line-height:1.2;letter-spacing:-.04em;margin:12px 0 20px}
    h2{font-size:clamp(27px,3vw,36px);line-height:1.3;margin-bottom:10px}h3{font-size:20px;line-height:1.4}
    .hero-copy{font-size:17px;color:var(--muted);max-width:700px;line-height:1.9;margin-bottom:25px}
    .tag-row{display:flex;flex-wrap:wrap;gap:8px}.tag{display:inline-block;border:1px solid var(--line-light);border-radius:5px;padding:3px 9px;color:var(--muted);font-size:12px}
    .tag.selected{border-color:var(--coral);color:var(--coral);background:rgba(255,154,118,.08)}
    .hero-panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:25px;box-shadow:var(--shadow);position:relative}
    .hero-panel:before{content:"INDEX / 01";position:absolute;top:16px;right:18px;color:var(--purple);font-size:11px;letter-spacing:.12em}
    .panel-label{font-size:12px;color:var(--muted);letter-spacing:.12em}.panel-number{font-size:48px;line-height:1.15;font-weight:800;color:var(--lime);margin:20px 0 4px}.panel-foot{font-size:13px;color:var(--muted)}
    .quick-links{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:45px;padding:0 19px;border-radius:10px;border:1px solid transparent;font-weight:700;font-size:14px}
    .btn-primary{background:var(--coral);color:#28121b}.btn-primary:hover{background:#ffb09a;transform:translateY(-2px);box-shadow:0 10px 25px rgba(255,154,118,.2)}
    .btn-secondary{border-color:var(--line-light);background:var(--panel);color:var(--text)}.btn-secondary:hover{border-color:var(--purple);background:var(--panel-2);transform:translateY(-2px)}
    .btn:focus,.nav-cta:focus,a:focus,input:focus,select:focus,textarea:focus{outline:3px solid rgba(215,233,121,.55);outline-offset:3px}
    .section{padding:72px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:27px}.section-intro{color:var(--muted);max-width:650px;margin:0}.text-link{color:var(--coral);font-size:14px;white-space:nowrap}.text-link:hover{color:#fff}
    .stat-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-bottom:32px}
    .stat{background:var(--panel);padding:20px 24px}.stat strong{display:block;font-size:28px;color:var(--lime);line-height:1.2}.stat span{display:block;color:var(--muted);font-size:13px;margin-top:5px}
    .content-layout{display:grid;grid-template-columns:285px 1fr;gap:28px;align-items:start}
    .filter-panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:23px;position:sticky;top:138px}
    .filter-panel h3{font-size:18px;margin-bottom:20px}.filter-group{padding:18px 0;border-top:1px solid var(--line)}.filter-group:first-of-type{border-top:0;padding-top:0}
    .filter-title{font-size:13px;color:var(--muted);margin-bottom:10px}.filter-option{display:block;padding:6px 9px;color:var(--muted);font-size:14px;border-radius:7px;margin:3px 0}.filter-option:hover{background:var(--panel-2);color:#fff}.filter-option.current{background:rgba(182,83,188,.18);color:#fff;border-left:2px solid var(--coral)}
    .index-list{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:8px 25px}
    .index-item{display:grid;grid-template-columns:58px 1fr auto;gap:19px;align-items:center;padding:24px 0;border-bottom:1px solid var(--line)}.index-item:last-child{border-bottom:0}
    .item-no{font-size:22px;color:var(--purple);font-weight:800}.item-main h3{font-size:19px;margin:0 0 4px}.item-main p{font-size:14px;color:var(--muted);line-height:1.7;margin:0 0 9px}.item-meta{font-size:12px;color:var(--muted);text-align:right;white-space:nowrap}.item-meta b{display:block;color:var(--lime);font-weight:500;margin-bottom:8px}.item-link{color:var(--coral);font-size:13px}
    .notice-band{border:1px solid var(--line-light);border-left:3px solid var(--lime);background:var(--bg-soft);padding:19px 22px;color:var(--muted);font-size:14px;margin-top:25px}
    .lower-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}.info-panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:27px}.info-panel h3{margin-bottom:14px}.info-panel p{color:var(--muted);font-size:14px;line-height:1.8}
    .faq-list{list-style:none;margin:0;padding:0}.faq-list li{border-bottom:1px solid var(--line);padding:14px 0}.faq-list strong{display:block;font-size:15px;margin-bottom:5px}.faq-list span{display:block;color:var(--muted);font-size:14px;line-height:1.75}
    .cta{padding:50px 0;background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.cta-box{display:flex;align-items:center;justify-content:space-between;gap:28px}.cta h2{margin-bottom:8px}.cta p{color:var(--muted);margin:0;font-size:14px}.cta-actions{display:flex;gap:10px;flex-shrink:0}
    footer{background:#0c0910;border-top:1px solid var(--line);padding:38px 0 22px}.footer-main{display:flex;justify-content:space-between;gap:30px}.footer-brand{max-width:400px}.footer-brand .brand-name{display:block;margin-bottom:9px}.footer-brand p{color:var(--muted);font-size:13px;margin:0}.footer-links{display:flex;gap:20px;align-items:flex-start;flex-wrap:wrap}.footer-links a{color:var(--muted);font-size:13px}.footer-links a:hover{color:var(--coral)}.footer-bottom{display:flex;justify-content:space-between;border-top:1px solid var(--line);margin-top:30px;padding-top:18px;color:#8d7f91;font-size:12px}.top-link{color:var(--lime)}
    @media(max-width:992px){.nav-shell{gap:16px}.brand{min-width:220px}.hero-grid{gap:30px}.content-layout{grid-template-columns:240px 1fr}}
    @media(max-width:768px){.container{width:min(100% - 32px,620px)}.topline-inner{overflow:hidden;white-space:nowrap}.status-note{overflow:hidden;text-overflow:ellipsis}.nav-shell{min-height:68px;justify-content:space-between}.menu-toggle{display:block}.main-nav{display:none;position:absolute;left:16px;right:16px;top:68px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:8px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.main-nav.is-open{display:flex}.main-nav a{padding:12px}.nav-cta{display:none}.hero{padding:48px 0 35px}.hero-grid,.content-layout,.lower-grid{grid-template-columns:1fr}.filter-panel{position:static}.stat-strip{grid-template-columns:1fr}.section{padding:54px 0}.section-head,.cta-box{display:block}.section-head .text-link{display:inline-block;margin-top:12px}.cta-actions{margin-top:22px}.index-list{padding:5px 16px}}
    @media(max-width:520px){h1{font-size:36px}.hero-copy{font-size:15px}.hero-actions,.quick-links,.cta-actions{display:grid;grid-template-columns:1fr}.btn{width:100%}.index-item{grid-template-columns:36px 1fr;gap:12px;padding:20px 0}.item-meta{grid-column:2;text-align:left;display:flex;gap:12px;align-items:center}.item-meta b{margin:0}.footer-main,.footer-bottom{display:block}.footer-links{margin-top:22px;gap:13px 18px}.footer-bottom span{display:block;margin-bottom:10px}}

/* roulang page: category2 */
:root{
 --bg:#100d15;
 --bg-soft:#17121e;
 --panel:#201827;
 --panel-2:#281d31;
 --line:#3b2d48;
 --line-light:#62456d;
 --text:#f8f1f5;
 --muted:#b7a9b8;
 --purple:#b653bc;
 --purple-deep:#813b8c;
 --coral:#ff9a76;
 --lime:#d7e979;
 --danger:#ff756e;
 --radius:16px;
 --shadow:0 18px 55px rgba(0,0,0,.28);
 --ease:180ms ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;
 background:var(--bg);
 color:var(--text);
 font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
 font-size:16px;
 line-height:1.8;
 background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
 background-size:48px 48px;
}
h1,h2,h3,h4,p{margin-top:0}
h1,h2,h3,h4{line-height:1.35}
a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease)}
a:focus,button:focus,input:focus,select:focus,textarea:focus{outline:3px solid rgba(215,233,121,.55);outline-offset:3px}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.container{width:min(1220px,calc(100% - 48px));margin:0 auto}
.info-bar{height:36px;background:#0b0910;border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}
.info-inner{height:36px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.info-domain{color:var(--coral);letter-spacing:.08em}
.info-status{display:flex;align-items:center;gap:8px}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 10px rgba(215,233,121,.7)}
.info-action{color:var(--lime);white-space:nowrap}
.site-header{position:sticky;top:0;z-index:20;background:rgba(16,13,21,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}
.nav-shell{min-height:78px;display:flex;align-items:center;gap:30px}
.brand{display:flex;align-items:center;gap:12px;min-width:245px}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--purple);display:grid;place-items:center;color:#160c1a;font-weight:900}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.04em}
.main-nav{display:flex;align-items:center;gap:7px;flex:1}
.main-nav a{position:relative;padding:10px 14px;border-radius:9px;color:var(--muted);font-size:14px}
.main-nav a:hover,.main-nav a:focus{color:#fff;background:var(--panel)}
.main-nav a.active{color:#fff;background:rgba(182,83,188,.17)}
.main-nav a.active:after{content:"";position:absolute;bottom:3px;left:14px;right:14px;height:2px;background:var(--coral)}
.nav-cta{padding:11px 18px;border:1px solid var(--coral);border-radius:9px;color:var(--coral);font-size:14px;white-space:nowrap}
.nav-cta:hover{background:var(--coral);color:#24101a}
.menu-toggle{display:none;margin-left:auto;border:1px solid var(--line-light);background:var(--panel);color:var(--text);border-radius:9px;padding:8px 12px}
.hero{padding:68px 0 48px;position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;width:480px;height:270px;right:-100px;top:0;background:rgba(182,83,188,.18);filter:blur(90px);pointer-events:none}
.hero-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:28px}
.eyebrow{color:var(--coral);font-size:12px;letter-spacing:.18em}
.hero-code{font-size:12px;color:var(--muted)}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:18px}
.breadcrumb a{color:var(--coral)}
.hero-layout{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(330px,.9fr);gap:42px;align-items:end}
h1{font-size:clamp(36px,5vw,58px);letter-spacing:-.04em;margin-bottom:20px;max-width:760px}
.hero-copy{font-size:17px;color:var(--muted);max-width:720px;line-height:1.9;margin-bottom:25px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:10px;border:1px solid transparent;font-weight:700;font-size:14px;transition:all var(--ease)}
.btn-primary{background:var(--coral);color:#28121b}
.btn-primary:hover{background:#ffb09a;transform:translateY(-2px);box-shadow:0 10px 25px rgba(255,154,118,.2)}
.btn-secondary{border-color:var(--line-light);background:var(--panel);color:var(--text)}
.btn-secondary:hover{border-color:var(--purple);background:var(--panel-2);transform:translateY(-2px)}
.filter-rail{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px;position:relative;overflow:hidden}
.filter-rail:before{content:"筛选轨道 / 02";position:absolute;right:20px;top:18px;color:var(--purple);font-size:11px;letter-spacing:.12em}
.rail-line{height:4px;background:var(--line);margin:36px 0 22px;position:relative}
.rail-line:after{content:"";position:absolute;left:0;top:0;width:68%;height:4px;background:var(--coral)}
.rail-row{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:11px 0;border-bottom:1px solid var(--line)}
.rail-row:last-child{border-bottom:0}
.rail-row span{font-size:13px;color:var(--muted)}
.rail-row strong{font-size:14px;color:var(--text)}
.badge{display:inline-flex;align-items:center;border:1px solid rgba(215,233,121,.45);color:var(--lime);border-radius:5px;padding:2px 8px;font-size:12px;white-space:nowrap}
.section{padding:72px 0}
.section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:28px}
.section-kicker{color:var(--purple);font-size:12px;letter-spacing:.13em;margin-bottom:8px}
.section h2{font-size:32px;margin-bottom:8px}
.section-intro{color:var(--muted);max-width:650px;margin-bottom:0}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.filter-panel{padding:26px;position:sticky;top:138px}
.filter-panel h3{font-size:19px;margin-bottom:20px}
.filter-group{padding:18px 0;border-top:1px solid var(--line)}
.filter-group:first-of-type{border-top:0;padding-top:0}
.filter-label{display:block;font-size:13px;color:var(--muted);margin-bottom:10px}
.filter-options{display:flex;flex-wrap:wrap;gap:8px}
.filter-option{border:1px solid var(--line-light);background:var(--bg-soft);border-radius:7px;color:var(--muted);font-size:13px;padding:6px 10px}
.filter-option:hover,.filter-option.selected{border-color:var(--coral);color:var(--text);background:rgba(255,154,118,.1)}
.index-stream{padding:10px 26px}
.stream-head{display:flex;align-items:center;justify-content:space-between;padding:16px 0;border-bottom:1px solid var(--line)}
.stream-head strong{font-size:18px}
.stream-head span{font-size:12px;color:var(--muted)}
.stream-item{display:grid;grid-template-columns:56px 1fr auto;gap:18px;align-items:start;padding:24px 0;border-bottom:1px solid var(--line)}
.stream-item:last-child{border-bottom:0}
.stream-number{font-size:23px;color:var(--purple);font-weight:800}
.stream-item h3{font-size:19px;margin-bottom:6px}
.stream-item p{font-size:14px;color:var(--muted);line-height:1.7;margin-bottom:10px;max-width:620px}
.meta{font-size:12px;color:var(--muted)}
.stream-link{font-size:13px;color:var(--lime);border:1px solid rgba(215,233,121,.45);border-radius:7px;padding:7px 11px;white-space:nowrap}
.stream-link:hover{background:var(--lime);color:#1b1910}
.stat-band{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);background:var(--bg-soft);border-radius:12px;margin-top:18px}
.stat-cell{padding:20px 22px;border-right:1px solid var(--line)}
.stat-cell:last-child{border-right:0}
.stat-cell small{display:block;color:var(--muted);font-size:12px;margin-bottom:4px}
.stat-cell strong{font-size:25px;color:var(--text)}
.group-layout{display:grid;grid-template-columns:1fr 1.2fr;gap:18px}
.group-block{padding:25px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}
.group-block.wide{grid-row:span 2;background:linear-gradient(135deg,#281d31,#1b1422)}
.group-index{color:var(--coral);font-size:12px;letter-spacing:.12em}
.group-block h3{font-size:21px;margin:12px 0 8px}
.group-block p{color:var(--muted);font-size:14px;line-height:1.75;margin-bottom:18px}
.topic-list{list-style:none;margin:0;padding:0}
.topic-list li{display:flex;justify-content:space-between;gap:15px;padding:12px 0;border-bottom:1px solid var(--line)}
.topic-list li:last-child{border-bottom:0}
.topic-list a{font-size:14px}
.topic-list a:hover{color:var(--coral)}
.topic-list span{font-size:12px;color:var(--muted)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:9px}
.tag{display:inline-block;border:1px solid var(--line-light);border-radius:5px;padding:4px 9px;color:var(--muted);font-size:12px}
.tag:hover{border-color:var(--purple);color:#fff}
.compare-strip{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.compare-col{background:var(--panel);padding:28px;border:1px solid var(--line);border-radius:var(--radius)}
.compare-col.highlight{background:linear-gradient(135deg,#2a1d32,#211727);border-color:var(--purple)}
.compare-col h3{font-size:21px;margin-bottom:18px}
.compare-list{list-style:none;padding:0;margin:0}
.compare-list li{display:flex;justify-content:space-between;gap:15px;padding:13px 0;border-bottom:1px solid var(--line);font-size:14px}
.compare-list li:last-child{border-bottom:0}
.compare-list li span:last-child{color:var(--lime);white-space:nowrap}
.accordion{background:transparent}
.accordion-item{border:1px solid var(--line)!important;background:var(--panel);margin-bottom:10px;border-radius:10px;overflow:hidden}
.accordion-title{color:var(--text);font-size:16px;font-weight:700;padding:18px 22px;border:0}
.accordion-title:hover,.accordion-title:focus{background:var(--panel-2);color:#fff}
.accordion-content{background:var(--bg-soft);color:var(--muted);border:0;padding:18px 22px;font-size:14px;line-height:1.8}
.cta-box{display:grid;grid-template-columns:1fr .9fr;gap:32px;align-items:center;background:var(--panel-2);border:1px solid var(--line-light);border-radius:var(--radius);padding:34px}
.cta-box h2{font-size:29px;margin-bottom:10px}
.cta-box p{color:var(--muted);margin-bottom:0}
.quick-form{display:flex;gap:9px}
.quick-form input{flex:1;min-width:0;background:var(--bg);border:1px solid var(--line-light);border-radius:9px;color:var(--text);padding:11px 13px}
.quick-form input::placeholder{color:#8f8191}
.quick-form button{border:0}
footer{border-top:1px solid var(--line);background:#0c0a10;padding:38px 0 22px}
.footer-main{display:flex;justify-content:space-between;gap:35px}
.footer-brand{max-width:460px}
.footer-brand .brand-name{display:block;margin-bottom:9px}
.footer-brand p{color:var(--muted);font-size:13px;margin:0}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;align-items:flex-start}
.footer-links a{font-size:13px;color:var(--muted)}
.footer-links a:hover{color:var(--coral)}
.footer-bottom{border-top:1px solid var(--line);margin-top:28px;padding-top:18px;display:flex;justify-content:space-between;color:#8f8191;font-size:12px}
.top-link{color:var(--lime)}
.mobile-filter{display:none}
@media(max-width:992px){
 .nav-shell{gap:16px}
 .brand{min-width:220px}
 .hero-layout{grid-template-columns:1fr}
 .filter-rail{max-width:640px}
 .filter-panel{position:static}
 .group-layout{grid-template-columns:1fr 1fr}
 .group-block.wide{grid-row:auto;grid-column:span 2}
}
@media(max-width:768px){
 .container{width:min(100% - 32px,680px)}
 .info-status{display:none}
 .nav-shell{min-height:68px}
 .brand-name{font-size:15px}
 .menu-toggle{display:block}
 .main-nav{display:none;position:absolute;left:16px;right:16px;top:70px;padding:10px;background:var(--panel);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
 .main-nav.is-open{display:flex}
 .main-nav a{padding:12px 14px}
 .nav-cta{display:none}
 .hero{padding-top:48px}
 .hero-top{align-items:flex-start;flex-direction:column;gap:8px}
 .section{padding:55px 0}
 .section-head{display:block}
 .section-intro{margin-top:10px}
 .stat-band{grid-template-columns:1fr 1fr}
 .stat-cell:nth-child(2){border-right:0}
 .stat-cell{border-bottom:1px solid var(--line)}
 .stat-cell:nth-child(3),.stat-cell:nth-child(4){border-bottom:0}
 .group-layout{grid-template-columns:1fr}
 .group-block.wide{grid-column:auto}
 .stream-item{grid-template-columns:38px 1fr}
 .stream-link{grid-column:2;justify-self:start}
 .cta-box{grid-template-columns:1fr}
}
@media(max-width:520px){
 .container{width:calc(100% - 28px)}
 .info-inner{font-size:11px}
 .info-action{font-size:11px}
 h1{font-size:35px}
 .hero-copy{font-size:15px}
 .hero-actions .btn{width:100%}
 .filter-rail{padding:20px}
 .index-stream{padding:8px 17px}
 .stream-item{gap:10px}
 .stream-item h3{font-size:17px}
 .stat-cell{padding:16px 14px}
 .stat-cell strong{font-size:21px}
 .compare-strip{grid-template-columns:1fr}
 .quick-form{display:block}
 .quick-form input,.quick-form button{width:100%;margin-bottom:9px}
 .footer-main,.footer-bottom{display:block}
 .footer-links{margin-top:22px;gap:12px 18px}
 .footer-bottom span{display:block;margin-bottom:12px}
}