/* roulang page: index */
:root{
      --bg:#07111f;
      --bg-deep:#040b15;
      --panel:rgba(13,29,51,.74);
      --panel-strong:rgba(17,39,68,.9);
      --line:rgba(117,181,255,.18);
      --line-bright:rgba(76,181,255,.5);
      --text:#edf6ff;
      --muted:#8ea6bf;
      --blue:#35a9ff;
      --cyan:#6de4ed;
      --violet:#8d8cf6;
      --amber:#f3b96d;
      --radius:18px;
      --shadow:0 22px 60px rgba(0,0,0,.28),0 0 36px rgba(37,130,220,.08);
      --max:1240px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;background:var(--bg);color:var(--text);
      font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
      line-height:1.75;overflow-x:hidden;
      background-image:radial-gradient(circle at 15% 8%,rgba(27,104,181,.16),transparent 28%),radial-gradient(circle at 86% 28%,rgba(83,74,174,.11),transparent 25%);
    }
    body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.18;background-image:linear-gradient(rgba(120,190,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(120,190,255,.04) 1px,transparent 1px);background-size:72px 72px;mask-image:linear-gradient(to bottom,#000,transparent 80%);z-index:-1}
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    img{display:block;max-width:100%}
    .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(5,14,26,.78);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
    .nav-wrap{min-height:82px;display:flex;align-items:center;gap:26px}
    .brand{display:flex;align-items:center;gap:13px;white-space:nowrap}
    .brand-mark{width:35px;height:35px;border:1px solid var(--cyan);border-radius:11px;position:relative;box-shadow:0 0 22px rgba(109,228,237,.2)}
    .brand-mark:after{content:"";position:absolute;left:12px;top:9px;border-left:10px solid var(--cyan);border-top:8px solid transparent;border-bottom:8px solid transparent}
    .brand-name{font-size:20px;font-weight:800;letter-spacing:.02em}
    .brand-sub{color:var(--muted);font-size:11px;letter-spacing:.16em;border-left:1px solid var(--line);padding-left:16px}
    .nav-line{height:28px;width:1px;background:var(--line);margin-left:3px}
    .nav-menu{display:flex;align-items:center;gap:7px;flex:1}
    .nav-menu a{position:relative;color:var(--muted);font-size:14px;padding:10px 13px;transition:.25s}
    .nav-menu a:after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;background:var(--cyan);transform:scaleX(0);transform-origin:center;transition:.25s;box-shadow:0 0 12px var(--cyan)}
    .nav-menu a:hover,.nav-menu a:focus-visible,.nav-menu a.active{color:var(--text)}
    .nav-menu a.active:after,.nav-menu a:hover:after{transform:scaleX(1)}
    .nav-action{border:1px solid var(--line);background:rgba(17,40,68,.5);color:var(--text);padding:9px 15px;border-radius:10px;font-size:13px;transition:.25s}
    .nav-action:hover{border-color:var(--line-bright);background:rgba(25,62,99,.7)}
    .menu-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);color:var(--text);border-radius:10px;width:44px;height:44px}
    .hero{padding:68px 0 48px}
    .hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:54px;align-items:center}
    .eyebrow,.section-kicker{color:var(--cyan);font-size:12px;letter-spacing:.2em;text-transform:uppercase}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(38px,5vw,68px);line-height:1.13;letter-spacing:-.045em;margin:18px 0 24px;max-width:680px}
    .hero-copy{font-size:17px;color:#b7c9dc;max-width:610px}
    .hero-actions{display:flex;gap:13px;flex-wrap:wrap;margin:30px 0 28px}
    .btn{min-height:46px;padding:10px 20px;border-radius:11px;border:1px solid transparent;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:14px;font-weight:700;transition:.25s}
    .btn-primary{background:var(--blue);color:#031121;box-shadow:0 0 25px rgba(53,169,255,.28)}
    .btn-primary:hover{background:#72c8ff;transform:translateY(-2px);box-shadow:0 0 32px rgba(53,169,255,.5)}
    .btn-primary:active{transform:translateY(0)}
    .btn-secondary{color:var(--text);border-color:var(--line-bright);background:rgba(22,48,79,.42)}
    .btn-secondary:hover{background:rgba(38,77,119,.62);transform:translateY(-2px)}
    .btn:focus-visible,.nav-action:focus-visible,.menu-toggle:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(109,228,237,.45);outline-offset:3px}
    .hero-points{display:flex;gap:22px;flex-wrap:wrap;color:var(--muted);font-size:13px}
    .hero-points strong{display:block;color:var(--text);font-size:20px;line-height:1.2}
    .media-stage{min-height:390px;border:1px solid var(--line);border-radius:24px;background:linear-gradient(140deg,rgba(16,50,87,.8),rgba(7,18,34,.92));position:relative;overflow:hidden;box-shadow:var(--shadow)}
    .media-stage:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 70% 20%,rgba(57,180,255,.3),transparent 32%),linear-gradient(115deg,transparent 35%,rgba(109,228,237,.06) 35.2%,transparent 35.5%)}
    .media-grid{position:absolute;inset:34px;background:linear-gradient(90deg,rgba(95,189,255,.12) 1px,transparent 1px),linear-gradient(rgba(95,189,255,.12) 1px,transparent 1px);background-size:48px 48px;opacity:.7}
    .play-orb{position:absolute;left:50%;top:46%;transform:translate(-50%,-50%);width:78px;height:78px;border:1px solid var(--cyan);border-radius:50%;display:grid;place-items:center;background:rgba(4,17,31,.6);box-shadow:0 0 34px rgba(109,228,237,.32)}
    .play-orb:after{content:"";margin-left:5px;border-left:18px solid var(--cyan);border-top:12px solid transparent;border-bottom:12px solid transparent}
    .timecode{position:absolute;left:30px;bottom:28px;color:var(--cyan);font:12px monospace;letter-spacing:.13em}
    .media-label{position:absolute;right:28px;top:25px;color:var(--muted);font-size:12px}
    .media-bar{position:absolute;left:30px;right:30px;bottom:57px;height:3px;background:rgba(255,255,255,.12);border-radius:4px}
    .media-bar span{display:block;width:43%;height:100%;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}
    .float-note{position:absolute;padding:10px 13px;background:rgba(7,21,39,.88);border:1px solid var(--line-bright);border-radius:12px;font-size:12px;box-shadow:var(--shadow)}
    .note-a{left:20px;top:68px}.note-b{right:20px;bottom:84px}
    .section{padding:70px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:25px}
    h2{font-size:clamp(26px,3vw,40px);line-height:1.2;letter-spacing:-.03em;margin:8px 0 0}
    .section-intro{color:var(--muted);max-width:590px;margin:0;font-size:14px}
    .glass{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);backdrop-filter:blur(12px)}
    .dashboard{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:14px}
    .metric{padding:23px;min-height:145px;position:relative;overflow:hidden}
    .metric:first-child{background:linear-gradient(135deg,rgba(25,75,123,.75),rgba(11,29,51,.76))}
    .metric-label{color:var(--muted);font-size:13px}.metric-value{font-size:38px;font-weight:800;line-height:1.2;margin:12px 0 10px}.metric small{color:var(--cyan);font-size:12px}
    .trend{height:25px;display:flex;align-items:end;gap:4px;margin-top:15px}.trend i{display:block;width:8px;background:var(--cyan);opacity:.7;border-radius:3px 3px 0 0}
    .matrix{display:grid;grid-template-columns:.65fr 1.2fr .85fr;grid-template-rows:170px 170px;gap:15px}
    .matrix-card{padding:22px;position:relative;overflow:hidden;transition:.3s;display:flex;flex-direction:column;justify-content:space-between}
    .matrix-card:hover{transform:translateY(-5px);border-color:var(--line-bright);box-shadow:0 16px 38px rgba(0,0,0,.25),0 0 24px rgba(53,169,255,.12)}
    .matrix-card.large{grid-row:span 2;background:linear-gradient(145deg,rgba(24,72,116,.75),rgba(11,25,45,.85))}
    .matrix-card.wide{grid-column:span 2}
    .matrix-card h3{font-size:20px;margin:8px 0 5px}.matrix-card p{font-size:13px;color:var(--muted);margin:0;max-width:310px}
    .badge{display:inline-flex;align-items:center;width:max-content;padding:3px 9px;border-radius:30px;border:1px solid rgba(109,228,237,.3);color:var(--cyan);font-size:11px;background:rgba(109,228,237,.07)}
    .card-foot{font-size:12px;color:var(--muted);display:flex;justify-content:space-between}.arrow{color:var(--cyan);font-size:18px}
    .comparison{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .compare-card{padding:28px}.compare-card.highlight{background:linear-gradient(145deg,rgba(20,63,105,.84),rgba(10,27,47,.84));border-color:rgba(53,169,255,.4)}
    .compare-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.compare-title h3{margin:0;font-size:19px}.compare-title span{font-size:12px;color:var(--muted)}
    .bar-row{margin:18px 0}.bar-label{display:flex;justify-content:space-between;color:var(--muted);font-size:13px;margin-bottom:7px}.bar{height:8px;background:rgba(255,255,255,.08);border-radius:8px;overflow:hidden}.bar span{display:block;height:100%;border-radius:8px;background:var(--violet)}.highlight .bar span{background:var(--cyan);box-shadow:0 0 13px rgba(109,228,237,.45)}
    .faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:35px;align-items:start}.faq-note{color:var(--muted);font-size:14px}
    .faq-item{border-top:1px solid var(--line)}.faq-item:last-child{border-bottom:1px solid var(--line)}.faq-question{width:100%;padding:19px 0;background:none;border:0;color:var(--text);display:flex;justify-content:space-between;text-align:left;font-weight:700}.faq-question span:last-child{color:var(--cyan);font-size:20px}.faq-answer{color:var(--muted);font-size:14px;max-height:0;overflow:hidden;transition:max-height .3s,padding .3s}.faq-item.open .faq-answer{max-height:140px;padding:0 30px 19px 0}.faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta-section{padding:30px 0 82px}.cta-panel{display:grid;grid-template-columns:.82fr 1.18fr;gap:35px;padding:34px;background:linear-gradient(120deg,rgba(20,62,101,.76),rgba(8,24,43,.9));border:1px solid var(--line-bright);border-radius:22px}
    .cta-panel h2{margin-bottom:15px}.cta-panel p{color:var(--muted);font-size:14px}.contact-list{margin-top:28px;display:grid;gap:13px;color:#b8cbde;font-size:13px}.contact-list b{color:var(--cyan);margin-right:8px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:13px;color:#bcd0e3}.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);background:rgba(3,13,25,.55);color:var(--text);border-radius:10px;padding:11px 13px;min-height:45px;transition:.25s}.field textarea{min-height:100px;resize:vertical}.field input::placeholder,.field textarea::placeholder{color:#5f7892}.field input:hover,.field select:hover,.field textarea:hover{border-color:rgba(109,228,237,.4)}.field input:disabled{opacity:.45;cursor:not-allowed}.form-submit{margin-top:17px}
    .site-footer{border-top:1px solid var(--line);padding:38px 0 25px;background:rgba(3,10,19,.52)}.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:35px}.footer-brand{font-weight:800;font-size:18px}.footer-text{color:var(--muted);font-size:13px;max-width:330px;margin-top:10px}.footer-title{font-size:13px;color:var(--text);margin-bottom:12px}.footer-links{display:grid;gap:7px;color:var(--muted);font-size:13px}.footer-links a:hover{color:var(--cyan)}.copyright{border-top:1px solid var(--line);margin-top:30px;padding-top:18px;color:#627b94;font-size:12px;display:flex;justify-content:space-between;gap:15px}
    @media(max-width:1024px){.hero-grid{gap:30px}.dashboard{grid-template-columns:repeat(2,1fr)}.metric:first-child{grid-column:span 2}.matrix{grid-template-columns:1fr 1fr;grid-template-rows:auto}.matrix-card.large{grid-row:span 1}.matrix-card.wide{grid-column:span 2;min-height:170px}}
    @media(max-width:767px){.container{width:min(100% - 30px,600px)}.nav-wrap{min-height:70px}.brand-sub,.nav-line,.nav-action{display:none}.brand-name{font-size:17px}.menu-toggle{display:block}.nav-menu{display:none;position:absolute;left:15px;right:15px;top:76px;padding:12px;flex-direction:column;align-items:stretch;background:rgba(6,18,33,.97);border:1px solid var(--line-bright);border-radius:14px;box-shadow:var(--shadow)}.nav-menu.open{display:flex}.nav-menu a{padding:13px 15px}.hero{padding:45px 0 30px}.hero-grid{grid-template-columns:1fr}.hero-copy{font-size:15px}.hero-actions .btn{flex:1}.media-stage{min-height:280px}.section{padding:51px 0}.section-head{display:block}.section-intro{margin-top:12px}.dashboard,.comparison,.faq-wrap,.cta-panel{grid-template-columns:1fr}.metric:first-child{grid-column:auto}.matrix{display:flex;flex-direction:column}.matrix-card,.matrix-card.large,.matrix-card.wide{min-height:160px}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.footer-grid{grid-template-columns:1fr 1fr}.copyright{display:block}.copyright span{display:block;margin-top:6px}}
    @media(max-width:520px){h1{font-size:36px}.hero-actions{display:grid}.hero-actions .btn{width:100%}.media-stage{min-height:240px}.float-note{font-size:11px}.note-a{left:12px}.note-b{right:12px}.footer-grid{grid-template-columns:1fr}.dashboard{display:block}.metric{margin-bottom:12px}.cta-panel{padding:24px 18px}}
    @media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category2 */
:root{
 --bg:#07111f;--bg-deep:#040b15;--panel:rgba(13,29,51,.74);
 --panel-strong:rgba(17,39,68,.9);--line:rgba(117,181,255,.18);
 --line-bright:rgba(76,181,255,.5);--text:#edf6ff;--muted:#8ea6bf;
 --blue:#35a9ff;--cyan:#6de4ed;--violet:#8d8cf6;--amber:#f3b96d;
 --radius:18px;--shadow:0 22px 60px rgba(0,0,0,.28),0 0 36px rgba(37,130,220,.08);--max:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;overflow-x:hidden;background-image:radial-gradient(circle at 15% 8%,rgba(27,104,181,.16),transparent 28%),radial-gradient(circle at 86% 28%,rgba(83,74,174,.11),transparent 25%)}
body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.18;background-image:linear-gradient(rgba(120,190,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(120,190,255,.04) 1px,transparent 1px);background-size:72px 72px;mask-image:linear-gradient(to bottom,#000,transparent 80%);z-index:-1}
a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{cursor:pointer}img{display:block;max-width:100%}
.container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(5,14,26,.78);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.nav-wrap{min-height:82px;display:flex;align-items:center;gap:26px}.brand{display:flex;align-items:center;gap:13px;white-space:nowrap}
.brand-mark{width:35px;height:35px;border:1px solid var(--cyan);border-radius:11px;position:relative;box-shadow:0 0 22px rgba(109,228,237,.2)}
.brand-mark:after{content:"";position:absolute;left:12px;top:9px;border-left:10px solid var(--cyan);border-top:8px solid transparent;border-bottom:8px solid transparent}
.brand-name{font-size:20px;font-weight:800;letter-spacing:.02em}.brand-sub{color:var(--muted);font-size:11px;letter-spacing:.16em;border-left:1px solid var(--line);padding-left:16px}
.nav-line{height:28px;width:1px;background:var(--line);margin-left:3px}.nav-menu{display:flex;align-items:center;gap:7px;flex:1}
.nav-menu a{position:relative;color:var(--muted);font-size:14px;padding:10px 13px;transition:.25s}
.nav-menu a:after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;background:var(--cyan);transform:scaleX(0);transition:.25s;box-shadow:0 0 12px var(--cyan)}
.nav-menu a:hover,.nav-menu a:focus-visible,.nav-menu a.active{color:var(--text)}.nav-menu a.active:after,.nav-menu a:hover:after{transform:scaleX(1)}
.nav-action{border:1px solid var(--line);background:rgba(17,40,68,.5);color:var(--text);padding:9px 15px;border-radius:10px;font-size:13px;transition:.25s}
.nav-action:hover{border-color:var(--line-bright);background:rgba(25,62,99,.7)}.menu-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);color:var(--text);border-radius:10px;width:44px;height:44px}
.btn{min-height:46px;padding:10px 20px;border-radius:11px;border:1px solid transparent;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:14px;font-weight:700;transition:.25s}
.btn-primary{background:var(--blue);color:#031121;box-shadow:0 0 25px rgba(53,169,255,.28)}.btn-primary:hover{background:#72c8ff;transform:translateY(-2px);box-shadow:0 0 32px rgba(53,169,255,.5)}.btn-primary:active{transform:translateY(0)}
.btn-secondary{color:var(--text);border-color:var(--line-bright);background:rgba(22,48,79,.42)}.btn-secondary:hover{background:rgba(38,77,119,.62);transform:translateY(-2px)}
.btn:focus-visible,.nav-action:focus-visible,.menu-toggle:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid rgba(109,228,237,.45);outline-offset:3px}
.eyebrow,.section-kicker{color:var(--cyan);font-size:12px;letter-spacing:.2em}.hero{padding:58px 0 34px}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:38px;align-items:stretch}
.hero h1{font-size:clamp(34px,5vw,64px);line-height:1.15;letter-spacing:-.04em;margin:15px 0 18px;max-width:700px}.hero-copy{font-size:17px;color:#b7c9dc;max-width:650px}
.hero-actions{display:flex;gap:13px;flex-wrap:wrap;margin:28px 0 0}.hero-panel,.glass{border:1px solid var(--line);background:var(--panel);border-radius:var(--radius);box-shadow:var(--shadow);backdrop-filter:blur(14px)}
.hero-panel{padding:25px;position:relative;overflow:hidden;background:linear-gradient(145deg,rgba(20,57,94,.78),rgba(8,20,37,.92))}
.hero-panel:before{content:"";position:absolute;width:220px;height:220px;right:-70px;top:-80px;border-radius:50%;background:rgba(53,169,255,.16);filter:blur(8px)}
.panel-top{display:flex;justify-content:space-between;align-items:center;position:relative}.panel-title{font-size:16px;font-weight:700}.status{color:var(--cyan);font-size:12px}.index-number{font-size:56px;font-weight:800;line-height:1;margin:40px 0 14px;letter-spacing:-.06em}.index-number small{font-size:15px;color:var(--muted);letter-spacing:0;font-weight:400}
.signal{height:82px;margin:24px 0;border-bottom:1px solid var(--line);background:linear-gradient(165deg,transparent 50%,rgba(53,169,255,.08) 50%);position:relative;overflow:hidden}
.signal:after{content:"";position:absolute;inset:20px 0 0;background:linear-gradient(155deg,transparent 47%,var(--cyan) 48%,transparent 49%,transparent 64%,var(--blue) 65%,transparent 66%);opacity:.8}
.panel-foot{display:flex;justify-content:space-between;color:var(--muted);font-size:12px}.section{padding:54px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:24px}.section h2{font-size:clamp(25px,3vw,38px);line-height:1.25;margin:7px 0}.section-intro{color:var(--muted);max-width:580px;margin:0;font-size:14px}
.filter-board{padding:22px;margin-bottom:28px}.filter-row{display:grid;grid-template-columns:1.6fr repeat(3,1fr) auto;gap:12px;align-items:end}.field label{display:block;color:var(--muted);font-size:12px;margin-bottom:6px}.field input,.field select{width:100%;height:45px;border:1px solid var(--line);background:rgba(4,15,29,.75);color:var(--text);border-radius:10px;padding:0 13px;outline:none}.field input::placeholder{color:#647e98}.field input:hover,.field select:hover,.field input:focus,.field select:focus{border-color:var(--line-bright);background:rgba(8,25,45,.9)}
.filter-actions{display:flex;gap:8px}.text-btn{color:var(--muted);border:0;background:none;padding:10px 4px;font-size:13px}.text-btn:hover{color:var(--cyan)}
.result-line{display:flex;align-items:center;justify-content:space-between;gap:15px;margin:20px 0;color:var(--muted);font-size:13px}.result-line strong{color:var(--text);font-size:18px}.chips{display:flex;gap:8px;flex-wrap:wrap}.badge{display:inline-flex;align-items:center;width:max-content;padding:3px 9px;border-radius:30px;border:1px solid rgba(109,228,237,.3);color:var(--cyan);font-size:11px;background:rgba(109,228,237,.07)}
.content-layout{display:grid;grid-template-columns:1.45fr .75fr;gap:22px}.feature-card{min-height:360px;padding:28px;position:relative;overflow:hidden;background:linear-gradient(145deg,rgba(22,70,111,.82),rgba(8,22,40,.9));border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);display:flex;flex-direction:column;justify-content:flex-end}
.feature-card:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 70% 20%,rgba(109,228,237,.25),transparent 30%),linear-gradient(120deg,transparent 38%,rgba(53,169,255,.1) 38.3%,transparent 38.7%),repeating-linear-gradient(0deg,transparent 0 23px,rgba(116,190,255,.06) 24px)}
.feature-card>*{position:relative}.feature-card h3{font-size:29px;line-height:1.3;margin:13px 0 7px}.feature-card p{color:#b7c9dc;max-width:590px;margin:0;font-size:14px}.timecode{position:absolute;right:24px;top:22px;color:var(--muted);font-size:12px;letter-spacing:.12em}
.side-stack{display:grid;gap:12px}.mini-card{padding:18px;transition:.25s}.mini-card:hover{transform:translateX(4px);border-color:var(--line-bright);background:var(--panel-strong)}.mini-card h3{font-size:16px;margin:7px 0 3px}.mini-card p{font-size:12px;color:var(--muted);margin:0}.mini-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:11px}
.timeline{margin-top:22px;display:grid;gap:10px}.timeline-item{display:grid;grid-template-columns:90px 1fr auto;gap:15px;align-items:center;padding:15px 17px;border:1px solid var(--line);background:rgba(10,25,44,.62);border-radius:14px;transition:.25s}.timeline-item:hover{border-color:var(--line-bright);background:rgba(17,42,70,.75)}.timeline-time{color:var(--cyan);font-size:12px}.timeline-item h3{font-size:15px;margin:0 0 2px}.timeline-item p{color:var(--muted);font-size:12px;margin:0}.arrow{color:var(--cyan);font-size:19px}
.empty-state{padding:28px;text-align:center;border:1px dashed var(--line-bright);border-radius:16px;color:var(--muted);margin-top:16px}.empty-state strong{display:block;color:var(--text);margin-bottom:5px}
.cta{padding:32px;margin:64px 0 20px;display:flex;align-items:center;justify-content:space-between;gap:25px;background:linear-gradient(105deg,rgba(18,61,101,.8),rgba(14,30,54,.74));border:1px solid var(--line-bright);border-radius:var(--radius)}.cta h2{font-size:25px;margin:0 0 5px}.cta p{color:var(--muted);margin:0;font-size:14px}
.site-footer{border-top:1px solid var(--line);padding:42px 0 22px;background:rgba(3,11,21,.58)}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:35px}.footer-brand{font-size:19px;font-weight:800}.footer-text{color:var(--muted);font-size:13px;max-width:300px}.footer-title{font-size:13px;color:var(--text);margin-bottom:12px}.footer-links{display:flex;flex-direction:column;gap:7px}.footer-links a{color:var(--muted);font-size:13px;transition:.2s}.footer-links a:hover,.footer-links a:focus-visible{color:var(--cyan)}.copyright{display:flex;justify-content:space-between;gap:15px;border-top:1px solid var(--line);margin-top:32px;padding-top:17px;color:#607993;font-size:11px}
@media(max-width:900px){.hero-grid,.content-layout{grid-template-columns:1fr}.filter-row{grid-template-columns:1fr 1fr}.filter-actions{grid-column:1/-1}.hero-panel{min-height:280px}.index-number{margin:25px 0 12px}}
@media(max-width:700px){.container{width:min(var(--max),calc(100% - 32px))}.nav-wrap{min-height:70px}.brand-sub,.nav-line,.nav-action{display:none}.brand-name{font-size:17px}.menu-toggle{display:block}.nav-menu{display:none;position:absolute;left:16px;right:16px;top:76px;padding:12px;flex-direction:column;align-items:stretch;background:rgba(5,16,30,.97);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}.nav-menu.open{display:flex}.nav-menu a{padding:13px 14px}.hero{padding:40px 0 22px}.hero h1{font-size:38px}.hero-copy{font-size:15px}.section{padding:40px 0}.section-head{display:block}.section-intro{margin-top:10px}.filter-row{grid-template-columns:1fr}.filter-actions{grid-column:auto}.result-line{align-items:flex-start;flex-direction:column}.feature-card{min-height:310px;padding:22px}.feature-card h3{font-size:23px}.timeline-item{grid-template-columns:70px 1fr}.timeline-item .arrow{display:none}.cta{display:block;padding:24px;margin-top:42px}.cta .btn{margin-top:18px}.footer-grid{grid-template-columns:1fr;gap:22px}.copyright{display:block}.copyright span{display:block;margin-top:5px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category1 */
:root{
      --bg:#07111f;--bg-deep:#040b15;--panel:rgba(13,29,51,.74);
      --panel-strong:rgba(17,39,68,.9);--line:rgba(117,181,255,.18);
      --line-bright:rgba(76,181,255,.5);--text:#edf6ff;--muted:#8ea6bf;
      --blue:#35a9ff;--cyan:#6de4ed;--violet:#8d8cf6;--amber:#f3b96d;
      --radius:18px;--shadow:0 22px 60px rgba(0,0,0,.28),0 0 36px rgba(37,130,220,.08);
      --max:1240px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--text);font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;overflow-x:hidden;background-image:radial-gradient(circle at 15% 8%,rgba(27,104,181,.16),transparent 28%),radial-gradient(circle at 86% 28%,rgba(83,74,174,.11),transparent 25%)}
    body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.18;background-image:linear-gradient(rgba(120,190,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(120,190,255,.04) 1px,transparent 1px);background-size:72px 72px;mask-image:linear-gradient(to bottom,#000,transparent 80%);z-index:-1}
    a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{cursor:pointer}img{display:block;max-width:100%}
    .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(5,14,26,.82);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
    .nav-wrap{min-height:82px;display:flex;align-items:center;gap:26px}
    .brand{display:flex;align-items:center;gap:13px;white-space:nowrap}
    .brand-mark{width:35px;height:35px;border:1px solid var(--cyan);border-radius:11px;position:relative;box-shadow:0 0 22px rgba(109,228,237,.2)}
    .brand-mark:after{content:"";position:absolute;left:12px;top:9px;border-left:10px solid var(--cyan);border-top:8px solid transparent;border-bottom:8px solid transparent}
    .brand-name{font-size:20px;font-weight:800;letter-spacing:.02em}.brand-sub{color:var(--muted);font-size:11px;letter-spacing:.16em;border-left:1px solid var(--line);padding-left:16px}
    .nav-line{height:28px;width:1px;background:var(--line);margin-left:3px}.nav-menu{display:flex;align-items:center;gap:7px;flex:1}
    .nav-menu a{position:relative;color:var(--muted);font-size:14px;padding:10px 13px;transition:.25s}
    .nav-menu a:after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;background:var(--cyan);transform:scaleX(0);transition:.25s;box-shadow:0 0 12px var(--cyan)}
    .nav-menu a:hover,.nav-menu a:focus-visible,.nav-menu a.active{color:var(--text)}.nav-menu a.active:after,.nav-menu a:hover:after{transform:scaleX(1)}
    .nav-action,.filter-select,.search-box{border:1px solid var(--line);background:rgba(17,40,68,.5);color:var(--text);border-radius:10px;transition:.25s}
    .nav-action{padding:9px 15px;font-size:13px}.nav-action:hover{border-color:var(--line-bright);background:rgba(25,62,99,.7)}
    .menu-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);color:var(--text);border-radius:10px;width:44px;height:44px}
    .hero{padding:68px 0 48px}.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center}
    .eyebrow,.section-kicker{color:var(--cyan);font-size:12px;letter-spacing:.2em}.hero h1{font-size:clamp(34px,5vw,64px);line-height:1.15;margin:14px 0 20px;letter-spacing:-.04em}
    .hero-copy{font-size:17px;color:#b7c9dc;max-width:650px}.hero-actions{display:flex;gap:13px;flex-wrap:wrap;margin:29px 0 24px}
    .btn{min-height:46px;padding:10px 20px;border-radius:11px;border:1px solid transparent;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:14px;font-weight:700;transition:.25s}
    .btn-primary{background:var(--blue);color:#031121;box-shadow:0 0 25px rgba(53,169,255,.28)}.btn-primary:hover{background:#72c8ff;transform:translateY(-2px);box-shadow:0 0 32px rgba(53,169,255,.5)}.btn-primary:active{transform:translateY(0)}
    .btn-secondary{color:var(--text);border-color:var(--line-bright);background:rgba(22,48,79,.42)}.btn-secondary:hover{background:rgba(38,77,119,.62);transform:translateY(-2px)}
    .btn:focus-visible,.nav-action:focus-visible,.menu-toggle:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid rgba(109,228,237,.45);outline-offset:3px}
    .hero-meta{display:flex;gap:28px;flex-wrap:wrap;color:var(--muted);font-size:13px}.hero-meta strong{display:block;color:var(--text);font-size:21px;line-height:1.2}
    .media-stage{height:350px;border:1px solid var(--line);border-radius:24px;background:linear-gradient(140deg,rgba(16,50,87,.8),rgba(7,18,34,.92));position:relative;overflow:hidden;box-shadow:var(--shadow)}
    .media-stage:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 70% 20%,rgba(57,180,255,.3),transparent 32%),linear-gradient(115deg,transparent 35%,rgba(109,228,237,.06) 35.2%,transparent 35.5%)}
    .media-grid{position:absolute;inset:30px;background:linear-gradient(90deg,rgba(95,189,255,.12) 1px,transparent 1px),linear-gradient(rgba(95,189,255,.12) 1px,transparent 1px);background-size:48px 48px}
    .media-label{position:absolute;right:25px;top:22px;color:var(--muted);font-size:12px}.play-orb{position:absolute;left:50%;top:49%;transform:translate(-50%,-50%);width:72px;height:72px;border:1px solid var(--cyan);border-radius:50%;display:grid;place-items:center;box-shadow:0 0 34px rgba(109,228,237,.25)}
    .play-orb:after{content:"";margin-left:5px;border-left:18px solid var(--cyan);border-top:12px solid transparent;border-bottom:12px solid transparent}.media-bar{position:absolute;left:28px;right:28px;bottom:48px;height:3px;background:rgba(255,255,255,.12);border-radius:4px}.media-bar span{display:block;width:58%;height:100%;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}
    .floating-tag{position:absolute;padding:8px 12px;background:rgba(6,20,36,.8);border:1px solid var(--line-bright);border-radius:9px;color:#ccecff;font-size:12px}.tag-one{left:22px;top:48px}.tag-two{right:22px;bottom:76px}
    .section{padding:66px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:25px}.section-head h2{font-size:30px;line-height:1.3;margin:7px 0 0}.section-intro{color:var(--muted);max-width:590px;margin:0;font-size:14px}
    .glass{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);backdrop-filter:blur(14px)}
    .filter-bar{display:flex;gap:10px;align-items:center;padding:14px;flex-wrap:wrap;margin-bottom:28px}.filter-select,.search-box{padding:10px 13px;font-size:13px}.filter-select:hover,.search-box:hover{border-color:var(--line-bright)}.search-box{min-width:220px;outline:none}.filter-note{color:var(--muted);font-size:12px;margin-left:auto}
    .feature-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:22px}.feature-card{min-height:330px;padding:27px;position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(24,72,116,.78),rgba(11,25,45,.88))}
    .feature-card:after{content:"";position:absolute;right:-10%;bottom:-34%;width:60%;height:80%;background:radial-gradient(circle,rgba(53,169,255,.28),transparent 65%);pointer-events:none}
    .feature-card h3{font-size:28px;max-width:470px;line-height:1.35;margin:22px 0 10px}.feature-card p{color:#b7c9dc;max-width:510px;font-size:14px}.badge{display:inline-flex;padding:3px 9px;border-radius:30px;border:1px solid rgba(109,228,237,.3);color:var(--cyan);font-size:11px;background:rgba(109,228,237,.07)}
    .feature-foot{position:absolute;bottom:25px;left:27px;right:27px;display:flex;justify-content:space-between;color:var(--muted);font-size:12px}.side-stack{display:grid;gap:22px}.mini-card{padding:22px;min-height:154px;transition:.3s}.mini-card:hover,.index-item:hover{border-color:var(--line-bright);transform:translateY(-3px)}.mini-card h3{font-size:18px;margin:12px 0 5px}.mini-card p{font-size:13px;color:var(--muted);margin:0}
    .index-layout{display:grid;grid-template-columns:1fr 330px;gap:23px;margin-top:24px}.content-list{display:grid;gap:11px}.index-item{display:grid;grid-template-columns:118px 1fr auto;gap:17px;align-items:center;padding:14px;border-radius:14px;background:rgba(13,29,51,.55);border:1px solid var(--line);transition:.25s}.thumb{height:72px;border-radius:10px;background:linear-gradient(135deg,#173b63,#0c1b31);position:relative;overflow:hidden}.thumb:after{content:"▶";position:absolute;inset:0;display:grid;place-items:center;color:var(--cyan);font-size:19px;background:rgba(4,12,24,.2)}.index-item h3{font-size:15px;margin:0 0 4px}.index-item p{font-size:12px;color:var(--muted);margin:0}.item-time{font-size:12px;color:var(--muted);white-space:nowrap}.rank-panel{padding:22px}.rank-panel h3{margin:0 0 18px;font-size:18px}.rank-row{display:flex;gap:12px;padding:13px 0;border-bottom:1px solid var(--line);font-size:13px}.rank-row:last-child{border:0}.rank-number{color:var(--amber);font-weight:800;width:20px}.rank-row span:last-child{margin-left:auto;color:var(--muted);font-size:12px}
    .split-panel{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.compare{padding:27px;background:rgba(9,24,43,.82)}.compare.highlight{background:rgba(19,53,86,.8)}.compare h3{margin:0 0 20px;font-size:19px}.compare-line{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding:12px 0;color:var(--muted);font-size:13px}.compare-line strong{color:var(--text)}.meter{height:5px;background:rgba(255,255,255,.1);border-radius:9px;margin-top:16px;overflow:hidden}.meter span{display:block;height:100%;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}
    .faq-wrap{display:grid;grid-template-columns:.75fr 1.25fr;gap:34px}.faq-wrap>div:first-child p{color:var(--muted);font-size:14px}.faq-list{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line);padding:17px 0}summary{cursor:pointer;list-style:none;font-weight:700;padding-right:30px;position:relative}summary::-webkit-details-marker{display:none}summary:after{content:"+";position:absolute;right:5px;color:var(--cyan);font-size:22px;top:-3px}details[open] summary:after{content:"−"}details p{color:var(--muted);font-size:13px;margin:10px 0 0}
    .cta{padding:35px;display:flex;justify-content:space-between;align-items:center;gap:24px;background:linear-gradient(110deg,rgba(19,58,94,.82),rgba(11,25,45,.84));border:1px solid var(--line-bright);border-radius:var(--radius)}.cta h2{margin:0 0 7px;font-size:25px}.cta p{margin:0;color:var(--muted);font-size:14px}
    .site-footer{margin-top:75px;padding:44px 0 25px;border-top:1px solid var(--line);background:rgba(4,11,21,.64)}.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:38px}.footer-brand{font-size:20px;font-weight:800}.footer-text{color:var(--muted);font-size:13px;max-width:340px}.footer-title{font-size:13px;color:var(--cyan);margin-bottom:13px}.footer-links{display:flex;flex-direction:column;gap:8px;color:var(--muted);font-size:13px}.footer-links a:hover{color:var(--text)}.copyright{display:flex;justify-content:space-between;gap:20px;margin-top:35px;padding-top:18px;border-top:1px solid var(--line);color:#66819c;font-size:12px}
    @media(max-width:900px){.hero-grid,.feature-layout,.index-layout,.faq-wrap{grid-template-columns:1fr}.hero{padding-top:48px}.media-stage{height:300px}.rank-panel{margin-top:0}.filter-note{width:100%;margin-left:0}}
    @media(max-width:700px){.container{width:min(var(--max),calc(100% - 30px))}.nav-wrap{min-height:70px}.brand-sub,.nav-line,.nav-action{display:none}.brand-name{font-size:17px}.menu-toggle{display:block}.nav-menu{display:none;position:absolute;left:15px;right:15px;top:76px;padding:12px;flex-direction:column;align-items:stretch;background:rgba(5,16,30,.97);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}.nav-menu.open{display:flex}.nav-menu a{padding:13px 15px}.hero h1{font-size:38px}.hero-copy{font-size:15px}.section{padding:48px 0}.section-head{display:block}.section-head h2{font-size:26px;margin-bottom:9px}.feature-card{min-height:360px;padding:21px}.feature-card h3{font-size:24px}.index-item{grid-template-columns:82px 1fr}.thumb{height:62px}.item-time{grid-column:2}.split-panel{grid-template-columns:1fr}.cta{display:block;padding:25px}.cta .btn{margin-top:20px}.footer-grid{grid-template-columns:1fr;gap:25px}.copyright{display:block}.copyright span{display:block;margin-top:6px}.filter-select,.search-box{width:100%;min-width:0}}
    @media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}