/* roulang page: index */
:root{
      --bg:#071321;
      --bg-soft:#0b1b30;
      --panel:rgba(15,35,59,.78);
      --panel-strong:#102844;
      --line:rgba(116,190,232,.18);
      --line-bright:rgba(72,215,255,.45);
      --text:#eff8ff;
      --muted:#9eb7c9;
      --dim:#718da4;
      --cyan:#48d7ff;
      --blue:#1677ff;
      --green:#58e0bd;
      --amber:#ffbf69;
      --danger:#f08484;
      --radius-xl:28px;
      --radius-lg:20px;
      --radius-md:15px;
      --shadow:0 24px 70px rgba(0,0,0,.28);
      --glow:0 0 28px rgba(72,215,255,.18);
      --max:1240px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      background:
        radial-gradient(circle at 78% 6%,rgba(22,119,255,.18),transparent 30rem),
        radial-gradient(circle at 10% 38%,rgba(38,183,217,.08),transparent 25rem),
        var(--bg);
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      line-height:1.75;
      font-size:16px;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;inset:0;pointer-events:none;opacity:.28;
      background-image:linear-gradient(rgba(120,190,230,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(120,190,230,.035) 1px,transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(to bottom,black,transparent 78%);
    }
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid rgba(72,215,255,.65);outline-offset:3px}
    .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:50;
      background:rgba(7,19,33,.84);
      backdrop-filter:blur(18px);
      border-bottom:1px solid var(--line);
    }
    .topbar{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
    .brand-mark{
      width:38px;height:38px;border:1px solid var(--line-bright);border-radius:12px;
      display:grid;place-items:center;color:var(--cyan);background:rgba(72,215,255,.08);
      box-shadow:var(--glow);font-size:17px;
    }
    .brand-text{font-size:16px}
    .main-nav{display:flex;align-items:center;gap:7px}
    .main-nav>a,.menu-toggle{
      color:var(--muted);padding:10px 15px;border:1px solid transparent;border-radius:999px;background:transparent;
      cursor:pointer;font-size:14px;
    }
    .main-nav>a:hover,.menu-toggle:hover,.main-nav .active{color:var(--text);border-color:var(--line-bright);background:rgba(72,215,255,.08)}
    .nav-mega{position:relative}
    .mega-panel{
      position:absolute;right:0;top:54px;width:360px;padding:18px;
      opacity:0;visibility:hidden;transform:translateY(8px);transition:.25s;
      background:rgba(13,33,56,.97);border:1px solid var(--line-bright);border-radius:18px;box-shadow:var(--shadow);
    }
    .nav-mega:hover .mega-panel,.nav-mega:focus-within .mega-panel,.nav-mega.open .mega-panel{opacity:1;visibility:visible;transform:none}
    .mega-title{font-size:12px;color:var(--dim);margin:0 0 10px}
    .mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
    .mega-link{display:block;padding:12px;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.025)}
    .mega-link:hover{border-color:var(--cyan);background:rgba(72,215,255,.08)}
    .mega-link strong{display:block;font-size:14px}.mega-link small{color:var(--muted);font-size:12px}
    .hero{padding:78px 0 66px}
    .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:28px;align-items:stretch}
    .hero-copy{padding:28px 0}
    .eyebrow,.label{
      display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:12px;font-weight:700;letter-spacing:.08em;
      border:1px solid var(--line-bright);border-radius:999px;padding:6px 12px;background:rgba(72,215,255,.07)
    }
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(38px,5.5vw,70px);line-height:1.12;letter-spacing:-.065em;margin:22px 0 22px;max-width:760px}
    h2{font-size:clamp(28px,3.5vw,43px);line-height:1.2;letter-spacing:-.045em;margin-bottom:14px}
    h3{font-size:20px;line-height:1.35;margin-bottom:8px}
    .hero-copy>p{color:var(--muted);font-size:18px;max-width:650px;line-height:1.9}
    .actions{display:flex;flex-wrap:wrap;gap:12px;margin:29px 0}
    .button{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:12px 21px;font-weight:700;font-size:14px;border:1px solid transparent}
    .button.primary{color:#041321;background:linear-gradient(110deg,var(--cyan),#68aaff);box-shadow:0 10px 30px rgba(22,119,255,.3)}
    .button.primary:hover{transform:translateY(-3px);box-shadow:0 15px 36px rgba(72,215,255,.38)}
    .button.secondary{color:var(--text);border-color:var(--line-bright);background:rgba(255,255,255,.04)}
    .button.secondary:hover{background:rgba(72,215,255,.11);transform:translateY(-2px)}
    .hero-stats{display:flex;gap:24px;flex-wrap:wrap;color:var(--muted);font-size:13px}
    .hero-stats b{display:block;color:var(--text);font-size:22px;line-height:1.2}
    .bento{display:grid;grid-template-columns:1.15fr .85fr;grid-template-rows:1fr 1fr;gap:13px}
    .glass{background:linear-gradient(145deg,rgba(21,50,81,.84),rgba(10,26,45,.76));border:1px solid var(--line);box-shadow:var(--shadow);backdrop-filter:blur(16px);border-radius:var(--radius-lg)}
    .preview{grid-row:span 2;padding:22px;position:relative;overflow:hidden;min-height:380px}
    .preview:after{content:"";position:absolute;inset:22% -20% auto;height:130px;background:linear-gradient(90deg,transparent,rgba(72,215,255,.16),transparent);transform:rotate(-12deg)}
    .frame{height:205px;border-radius:16px;background:linear-gradient(145deg,#12345a,#071522 62%);border:1px solid var(--line-bright);position:relative;overflow:hidden}
    .frame:before{content:"2019";position:absolute;right:16px;top:13px;color:rgba(255,255,255,.62);font-weight:800;font-size:12px}
    .frame-lines{position:absolute;left:18px;right:18px;bottom:26px;height:42px;border-top:1px solid rgba(72,215,255,.5);background:repeating-linear-gradient(90deg,transparent 0 10px,rgba(72,215,255,.3) 11px 12px);opacity:.6}
    .play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:var(--cyan);color:#071321;font-size:22px;box-shadow:0 0 35px rgba(72,215,255,.55)}
    .preview-info{position:relative;z-index:1;margin-top:22px}.preview-info p{color:var(--muted);font-size:14px}
    .timebar{height:5px;background:#183653;border-radius:8px;margin:18px 0 9px}.timebar span{display:block;width:62%;height:100%;background:var(--cyan);border-radius:inherit}
    .mini{padding:19px;display:flex;flex-direction:column;justify-content:space-between}.mini strong{font-size:24px}.mini span{color:var(--muted);font-size:13px}.mini.accent{background:linear-gradient(145deg,rgba(49,87,112,.75),rgba(15,38,57,.8))}
    section{padding:78px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:30px}
    .section-head p{max-width:590px;color:var(--muted);margin-bottom:0}
    .section-kicker{color:var(--amber);font-size:13px;font-weight:700;margin-bottom:9px}
    .pain{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .pain-grid{display:grid;grid-template-columns:1fr 1.35fr;gap:48px;align-items:start}
    .pain-intro p{color:var(--muted);max-width:390px}
    .signal-list{display:grid;gap:12px}
    .signal{display:grid;grid-template-columns:42px 1fr auto;gap:15px;align-items:center;padding:17px 18px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.025)}
    .signal-icon{color:var(--amber);font-size:20px}.signal p{color:var(--muted);font-size:13px;margin:0}.status{font-size:11px;color:var(--amber);border:1px solid rgba(255,191,105,.35);border-radius:999px;padding:3px 8px;white-space:nowrap}
    .shelf{background:linear-gradient(180deg,rgba(9,26,46,.3),rgba(9,26,46,.72))}
    .filterbar{display:flex;flex-wrap:wrap;gap:9px;padding:13px;border:1px solid var(--line);border-radius:16px;background:rgba(4,15,28,.45);margin-bottom:27px}
    .filter{border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--muted);padding:8px 14px;font-size:13px;cursor:pointer}.filter:hover,.filter.active{color:var(--text);border-color:var(--cyan);background:rgba(72,215,255,.1)}
    .content-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:15px}
    .content-card{padding:14px;border-radius:18px;background:var(--panel);border:1px solid var(--line);transition:.25s}
    .content-card:hover{transform:translateY(-4px);border-color:var(--line-bright);box-shadow:var(--glow)}
    .cover{height:148px;border-radius:12px;position:relative;overflow:hidden;background:linear-gradient(135deg,#1c4970 0%,#122844 45%,#091521 100%);margin-bottom:15px}
    .cover.tall{height:205px;background:linear-gradient(135deg,#354d77,#132237 50%,#0c1824)}
    .cover:after{content:"";position:absolute;inset:auto 0 0;height:48%;background:linear-gradient(transparent,rgba(3,10,18,.8))}
    .cover-code{position:absolute;left:13px;bottom:11px;z-index:1;font-size:12px;color:#d8f7ff;letter-spacing:.08em}
    .card-meta{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:9px}.tag{font-size:11px;color:var(--green);background:rgba(88,224,189,.1);border:1px solid rgba(88,224,189,.25);padding:3px 8px;border-radius:999px}.tag.warm{color:var(--amber);border-color:rgba(255,191,105,.3);background:rgba(255,191,105,.08)}
    .content-card h3{font-size:17px;margin-bottom:7px}.content-card p{font-size:13px;color:var(--muted);margin-bottom:12px}
    .text-link{color:var(--cyan);font-size:13px;font-weight:700}.text-link:hover{color:#fff}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;border:1px solid var(--line);background:var(--line);border-radius:20px;overflow:hidden}
    .metric{background:rgba(11,29,49,.9);padding:27px 22px}.metric b{font-size:36px;line-height:1;display:block;color:var(--cyan);margin-bottom:9px}.metric span{font-size:13px;color:var(--muted)}
    .recommend{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}.recommend-main,.recommend-side{padding:26px}.recommend-main{min-height:230px;background:linear-gradient(130deg,rgba(22,119,255,.22),rgba(15,39,65,.75))}
    .recommend-main p,.recommend-side p{color:var(--muted);font-size:14px}.recommend-side{display:grid;gap:14px}.rec-row{display:flex;justify-content:space-between;gap:15px;padding-bottom:13px;border-bottom:1px solid var(--line)}.rec-row:last-child{border-bottom:0}.rec-row span{color:var(--muted);font-size:12px}
    .news-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.news-list{padding:6px 24px}.news-item{display:flex;justify-content:space-between;gap:20px;padding:19px 0;border-bottom:1px solid var(--line)}.news-item:last-child{border-bottom:0}.news-item a{font-weight:700}.news-item a:hover{color:var(--cyan)}.news-item small{color:var(--dim);white-space:nowrap}.news-note{padding:26px}.news-note p{color:var(--muted);font-size:14px}
    .share{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:center}.share-copy p{color:var(--muted)}.share-box{padding:24px;display:flex;align-items:center;justify-content:space-between;gap:22px}.share-box strong{font-size:18px}.share-box span{display:block;color:var(--muted);font-size:13px}
    .faq-wrap{max-width:900px}.accordion{background:transparent;margin:0}.accordion-item{border:1px solid var(--line);border-radius:14px;margin-bottom:10px;background:rgba(14,34,56,.6);overflow:hidden}.accordion-title{color:var(--text);font-weight:700;border:0;background:transparent;padding:19px 22px;font-size:15px}.accordion-title:hover{background:rgba(72,215,255,.07);color:var(--cyan)}.accordion-content{background:rgba(5,17,30,.55);color:var(--muted);border:0;padding:0 22px 20px;font-size:14px}
    .cta{padding:84px 0}.cta-panel{padding:42px;display:flex;justify-content:space-between;align-items:center;gap:30px;background:linear-gradient(115deg,rgba(21,80,126,.75),rgba(13,35,60,.9));border-color:var(--line-bright)}.cta-panel p{color:#c2d8e8;max-width:650px;margin:0}
    footer{border-top:1px solid var(--line);padding:42px 0 28px;background:#06101d}.footer-grid{display:grid;grid-template-columns:1.25fr .75fr .75fr;gap:35px}.footer-brand p{color:var(--muted);font-size:13px;max-width:380px}.footer-title{font-size:13px;color:var(--text);font-weight:700;margin-bottom:13px}.footer-links{display:grid;gap:8px}.footer-links a{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:20px;color:var(--dim);font-size:12px;display:flex;justify-content:space-between;gap:15px}
    @media(max-width:900px){.hero-grid,.pain-grid,.recommend,.share,.news-layout{grid-template-columns:1fr}.content-grid{grid-template-columns:1fr 1fr}.preview{min-height:330px}.metrics{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}}
    @media(max-width:680px){.container{width:min(100% - 36px,var(--max))}.topbar{min-height:68px}.brand-text{font-size:14px}.main-nav{display:none}.hero{padding:48px 0 34px}.hero-copy{padding:0}h1{font-size:39px}.hero-copy>p{font-size:16px}.bento{grid-template-columns:1fr}.preview{grid-row:auto;min-height:330px}.mini{min-height:115px}.section-head{display:block}.section-head p{margin-top:12px}.content-grid{grid-template-columns:1fr}.cover.tall{height:170px}.metrics{grid-template-columns:1fr 1fr}.metric{padding:20px 15px}.metric b{font-size:29px}.signal{grid-template-columns:34px 1fr}.status{display:none}.news-list{padding:4px 18px}.news-item{display:block}.news-item small{display:block;margin-top:5px}.share-box,.cta-panel{display:block;padding:26px}.share-box .button,.cta-panel .button{margin-top:20px;width:100%}.footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin-top:7px}}
    @media(max-width:390px){h1{font-size:34px}.actions .button{width:100%}.mega-panel{position:fixed;left:18px;right:18px;top:70px;width:auto}}

/* roulang page: category2 */
:root{
 --bg:#071321;--bg-soft:#0b1b30;--panel:rgba(15,35,59,.78);--panel-strong:#102844;
 --line:rgba(116,190,232,.18);--line-bright:rgba(72,215,255,.45);--text:#eff8ff;
 --muted:#9eb7c9;--dim:#718da4;--cyan:#48d7ff;--blue:#1677ff;--green:#58e0bd;
 --amber:#ffbf69;--danger:#f08484;--radius-xl:28px;--radius-lg:20px;--radius-md:15px;
 --shadow:0 24px 70px rgba(0,0,0,.28);--glow:0 0 28px rgba(72,215,255,.18);--max:1240px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--text);background:radial-gradient(circle at 78% 5%,rgba(22,119,255,.18),transparent 30rem),radial-gradient(circle at 8% 45%,rgba(38,183,217,.08),transparent 25rem),var(--bg);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75;font-size:16px;overflow-x:hidden}
body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.28;background-image:linear-gradient(rgba(120,190,230,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(120,190,230,.035) 1px,transparent 1px);background-size:42px 42px;mask-image:linear-gradient(to bottom,black,transparent 78%)}
a{color:inherit;text-decoration:none;transition:.25s ease}img{max-width:100%;display:block}button,input{font:inherit}
button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid rgba(72,215,255,.65);outline-offset:3px}
.container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(7,19,33,.86);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.topbar{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
.brand-mark{width:38px;height:38px;border:1px solid var(--line-bright);border-radius:12px;display:grid;place-items:center;color:var(--cyan);background:rgba(72,215,255,.08);box-shadow:var(--glow);font-size:17px}
.brand-text{font-size:16px}
.main-nav{display:flex;align-items:center;gap:7px}.main-nav>a,.menu-toggle{color:var(--muted);padding:10px 15px;border:1px solid transparent;border-radius:999px;background:transparent;cursor:pointer;font-size:14px}
.main-nav>a:hover,.menu-toggle:hover,.main-nav .active{color:var(--text);border-color:var(--line-bright);background:rgba(72,215,255,.08)}
.nav-mega{position:relative}.mega-panel{position:absolute;right:0;top:54px;width:360px;padding:18px;opacity:0;visibility:hidden;transform:translateY(8px);transition:.25s;background:rgba(13,33,56,.98);border:1px solid var(--line-bright);border-radius:18px;box-shadow:var(--shadow)}
.nav-mega:hover .mega-panel,.nav-mega:focus-within .mega-panel,.nav-mega.open .mega-panel{opacity:1;visibility:visible;transform:none}
.mega-title{font-size:12px;color:var(--dim);margin:0 0 10px}.mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.mega-link{display:block;padding:12px;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.025)}.mega-link:hover{border-color:var(--cyan);background:rgba(72,215,255,.08)}.mega-link strong{display:block;font-size:14px}.mega-link small{color:var(--muted);font-size:12px}
.page-hero{padding:66px 0 48px;border-bottom:1px solid var(--line)}
.hero-layout{display:grid;grid-template-columns:1.08fr .92fr;gap:42px;align-items:center}
.eyebrow,.label{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:12px;font-weight:700;letter-spacing:.08em;border:1px solid var(--line-bright);border-radius:999px;padding:6px 12px;background:rgba(72,215,255,.07)}
h1,h2,h3{line-height:1.25;letter-spacing:-.035em;margin-top:0}h1{font-size:clamp(34px,5vw,58px);margin:20px 0 18px}h2{font-size:clamp(28px,3vw,40px);margin-bottom:12px}h3{font-size:20px;margin-bottom:8px}
.hero-copy p,.section-head p{color:var(--muted);font-size:17px;max-width:650px}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.button{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:12px 21px;font-weight:700;font-size:14px;border:1px solid transparent}.button.primary{color:#041321;background:linear-gradient(110deg,var(--cyan),#68aaff);box-shadow:0 10px 30px rgba(22,119,255,.3)}.button.primary:hover{transform:translateY(-3px);box-shadow:0 15px 36px rgba(72,215,255,.38)}.button.secondary{color:var(--text);border-color:var(--line-bright);background:rgba(255,255,255,.04)}.button.secondary:hover{background:rgba(72,215,255,.11);transform:translateY(-2px)}
.poster{min-height:310px;padding:22px;border-radius:var(--radius-xl);background:linear-gradient(145deg,rgba(22,119,255,.35),rgba(12,29,49,.92)),radial-gradient(circle at 70% 20%,rgba(72,215,255,.42),transparent 13rem);border:1px solid var(--line-bright);box-shadow:var(--shadow);position:relative;overflow:hidden}.poster:after{content:"";position:absolute;inset:25% -10% auto;height:1px;background:var(--cyan);box-shadow:0 52px 0 rgba(72,215,255,.28),0 104px 0 rgba(72,215,255,.18);transform:rotate(-12deg)}.poster-top{display:flex;justify-content:space-between;position:relative;z-index:1;color:var(--muted);font-size:12px}.poster-content{position:absolute;left:24px;right:24px;bottom:24px;z-index:2}.poster-content strong{font-size:25px;display:block;margin-bottom:8px}.poster-content span{color:var(--cyan);font-size:13px}
section{padding:72px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:28px}.section-head p{margin:0}
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;padding:15px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.035);margin-bottom:28px}.filter-bar a{padding:8px 14px;border-radius:999px;color:var(--muted);font-size:13px;border:1px solid transparent}.filter-bar a:hover,.filter-bar a.selected{color:var(--text);border-color:var(--line-bright);background:rgba(72,215,255,.1)}
.shelf{display:grid;grid-template-columns:1.25fr .9fr .9fr;gap:16px}.video-card{border:1px solid var(--line);background:var(--panel);border-radius:var(--radius-lg);overflow:hidden;transition:.25s}.video-card:hover{transform:translateY(-5px);border-color:var(--line-bright);box-shadow:var(--glow)}.video-card.featured{grid-row:span 2}.cover{height:145px;position:relative;background:linear-gradient(135deg,#123b63,#0d1a32 55%,#153c55)}.featured .cover{height:300px;background:linear-gradient(145deg,rgba(22,119,255,.7),rgba(5,17,31,.82)),radial-gradient(circle at 70% 30%,#48d7ff,transparent 18rem)}.cover:before{content:"字幕画面";position:absolute;left:18px;bottom:17px;color:rgba(239,248,255,.72);font-size:13px;border-bottom:2px solid var(--cyan);padding-bottom:5px}.duration{position:absolute;right:14px;top:13px;background:rgba(4,13,24,.7);padding:3px 8px;border-radius:6px;color:var(--text);font-size:11px}.video-info{padding:17px}.video-info p{color:var(--muted);font-size:13px;margin:8px 0 14px}.card-meta{display:flex;gap:7px;flex-wrap:wrap}.tag{font-size:11px;color:var(--green);background:rgba(88,224,189,.1);border:1px solid rgba(88,224,189,.25);padding:3px 8px;border-radius:999px}.tag.warm{color:var(--amber);border-color:rgba(255,191,105,.3);background:rgba(255,191,105,.08)}.text-link{color:var(--cyan);font-size:13px;font-weight:700}
.browse-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.browse-panel{padding:28px;border-radius:var(--radius-lg);background:linear-gradient(130deg,rgba(22,119,255,.18),rgba(15,35,59,.72));border:1px solid var(--line)}.browse-panel p{color:var(--muted)}.topic-list{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}.topic-list span{padding:8px 12px;border-radius:10px;background:rgba(255,255,255,.05);border:1px solid var(--line);font-size:13px;color:var(--muted)}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.metric{padding:23px 20px;border-left:2px solid var(--cyan);background:rgba(15,35,59,.5);border-radius:0 15px 15px 0}.metric b{font-size:32px;display:block;color:var(--text)}.metric span{font-size:13px;color:var(--muted)}
.quote-row{display:flex;gap:16px;overflow-x:auto;padding-bottom:8px}.quote{min-width:280px;flex:1;padding:24px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg)}.quote p{color:var(--muted);margin:12px 0}.quote small{color:var(--cyan)}
.faq-wrap{max-width:850px}.accordion{background:transparent;margin:0}.accordion-item{border:1px solid var(--line)!important;border-radius:13px!important;margin-bottom:10px;overflow:hidden;background:rgba(15,35,59,.55)}.accordion-title{color:var(--text)!important;border:0!important;background:transparent!important;padding:18px 22px!important;font-size:15px}.accordion-content{border:0!important;background:rgba(4,15,28,.35);color:var(--muted);padding:0 22px 18px!important}
.cta{padding:46px;border-radius:var(--radius-xl);background:linear-gradient(115deg,rgba(22,119,255,.28),rgba(72,215,255,.08));border:1px solid var(--line-bright);display:flex;justify-content:space-between;align-items:center;gap:25px}.cta p{color:var(--muted);margin:8px 0 0}
footer{padding:52px 0 25px;background:#050f1c;border-top:1px solid var(--line)}.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:35px}.footer-brand p{color:var(--muted);font-size:14px;max-width:350px;margin-top:15px}.footer-title{font-size:13px;color:var(--amber);font-weight:700;margin-bottom:12px}.footer-links{display:grid;gap:8px}.footer-links a{color:var(--muted);font-size:14px}.footer-links a:hover{color:var(--cyan)}.copyright{display:flex;justify-content:space-between;gap:15px;margin-top:42px;padding-top:18px;border-top:1px solid var(--line);color:var(--dim);font-size:12px}
@media(max-width:900px){.hero-layout,.browse-grid{grid-template-columns:1fr}.shelf{grid-template-columns:1fr 1fr}.featured{grid-row:auto}.featured .cover{height:220px}.metrics{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){.container{width:min(var(--max),calc(100% - 36px))}.topbar{min-height:70px}.brand-text{font-size:13px}.main-nav{gap:2px}.main-nav>a{display:none}.menu-toggle{padding:8px 11px}.mega-panel{right:-5px;width:min(330px,calc(100vw - 28px))}.page-hero{padding:44px 0 35px}section{padding:52px 0}.section-head{display:block}.section-head p{margin-top:10px}.shelf{grid-template-columns:1fr}.featured .cover{height:210px}.metrics{gap:10px}.metric b{font-size:27px}.cta{padding:30px 23px;display:block}.cta .button{margin-top:20px}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-top:5px}}
@media(max-width:420px){h1{font-size:34px}.hero-copy p{font-size:15px}.actions .button{width:100%}.footer-grid{grid-template-columns:1fr}.mega-grid{grid-template-columns:1fr}}

/* roulang page: category1 */
:root{
      --bg:#071321;
      --bg-soft:#0b1b30;
      --panel:rgba(15,35,59,.78);
      --panel-strong:#102844;
      --line:rgba(116,190,232,.18);
      --line-bright:rgba(72,215,255,.45);
      --text:#eff8ff;
      --muted:#9eb7c9;
      --dim:#718da4;
      --cyan:#48d7ff;
      --blue:#1677ff;
      --green:#58e0bd;
      --amber:#ffbf69;
      --danger:#f08484;
      --radius-xl:28px;
      --radius-lg:20px;
      --radius-md:15px;
      --shadow:0 24px 70px rgba(0,0,0,.28);
      --glow:0 0 28px rgba(72,215,255,.18);
      --max:1240px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;color:var(--text);background:
      radial-gradient(circle at 78% 6%,rgba(22,119,255,.18),transparent 30rem),
      radial-gradient(circle at 10% 38%,rgba(38,183,217,.08),transparent 25rem),var(--bg);
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;
      line-height:1.75;font-size:16px;overflow-x:hidden
    }
    body:before{
      content:"";position:fixed;inset:0;pointer-events:none;opacity:.28;
      background-image:linear-gradient(rgba(120,190,230,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(120,190,230,.035) 1px,transparent 1px);
      background-size:42px 42px;mask-image:linear-gradient(to bottom,black,transparent 78%)
    }
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{max-width:100%;display:block}
    button,input,select{font:inherit}
    button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid rgba(72,215,255,.65);outline-offset:3px}
    .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(7,19,33,.86);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
    .topbar{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
    .brand-mark{width:38px;height:38px;border:1px solid var(--line-bright);border-radius:12px;display:grid;place-items:center;color:var(--cyan);background:rgba(72,215,255,.08);box-shadow:var(--glow);font-size:17px}
    .brand-text{font-size:16px}
    .main-nav{display:flex;align-items:center;gap:7px}
    .main-nav>a,.menu-toggle{color:var(--muted);padding:10px 15px;border:1px solid transparent;border-radius:999px;background:transparent;cursor:pointer;font-size:14px}
    .main-nav>a:hover,.menu-toggle:hover,.main-nav .active{color:var(--text);border-color:var(--line-bright);background:rgba(72,215,255,.08)}
    .nav-mega{position:relative}
    .mega-panel{position:absolute;right:0;top:54px;width:360px;padding:18px;opacity:0;visibility:hidden;transform:translateY(8px);transition:.25s;background:rgba(13,33,56,.97);border:1px solid var(--line-bright);border-radius:18px;box-shadow:var(--shadow)}
    .nav-mega:hover .mega-panel,.nav-mega:focus-within .mega-panel,.nav-mega.open .mega-panel{opacity:1;visibility:visible;transform:none}
    .mega-title{font-size:12px;color:var(--dim);margin:0 0 10px}
    .mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
    .mega-link{display:block;padding:12px;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.025)}
    .mega-link:hover{border-color:var(--cyan);background:rgba(72,215,255,.08)}
    .mega-link strong{display:block;font-size:14px}
    .mega-link small{color:var(--muted);font-size:12px}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(34px,5vw,60px);line-height:1.17;letter-spacing:-.045em;margin:18px 0}
    h2{font-size:clamp(28px,3vw,40px);line-height:1.25;letter-spacing:-.035em;margin-bottom:12px}
    h3{font-size:19px;line-height:1.4;margin-bottom:8px}
    .hero{padding:70px 0 48px}
    .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:30px;align-items:center}
    .eyebrow,.label{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:12px;font-weight:700;letter-spacing:.08em;border:1px solid var(--line-bright);border-radius:999px;padding:6px 12px;background:rgba(72,215,255,.07)}
    .hero-copy>p{color:var(--muted);font-size:18px;max-width:680px;line-height:1.9}
    .button{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:12px 21px;font-weight:700;font-size:14px;border:1px solid transparent;cursor:pointer}
    .button.primary{color:#041321;background:linear-gradient(110deg,var(--cyan),#68aaff);box-shadow:0 10px 30px rgba(22,119,255,.3)}
    .button.primary:hover{transform:translateY(-3px);box-shadow:0 15px 36px rgba(72,215,255,.38)}
    .button.secondary{color:var(--text);border-color:var(--line-bright);background:rgba(255,255,255,.04)}
    .button.secondary:hover{background:rgba(72,215,255,.11);transform:translateY(-2px)}
    .actions{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0}
    .hero-stats{display:flex;gap:26px;flex-wrap:wrap;color:var(--muted);font-size:13px}
    .hero-stats b{display:block;color:var(--text);font-size:22px;line-height:1.2}
    .cover-panel,.glass,.filter-box,.content-card,.faq-wrap,.cta-box{background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);backdrop-filter:blur(16px)}
    .cover-panel{border-radius:var(--radius-xl);padding:24px;position:relative;overflow:hidden}
    .cover-panel:after{content:"";position:absolute;width:180px;height:180px;right:-70px;top:-60px;border-radius:50%;background:rgba(72,215,255,.13);filter:blur(4px)}
    .cover-screen{height:210px;border-radius:18px;background:linear-gradient(145deg,#153c65,#091729 62%);border:1px solid rgba(72,215,255,.28);position:relative;overflow:hidden;padding:20px}
    .scanline{position:absolute;left:0;right:0;top:54%;height:1px;background:rgba(72,215,255,.5);box-shadow:0 0 18px var(--cyan)}
    .timecode{font-family:ui-monospace,monospace;color:var(--cyan);font-size:12px;letter-spacing:.08em}
    .screen-title{position:absolute;left:20px;bottom:44px;font-size:23px;font-weight:800}
    .subtitle-line{position:absolute;left:20px;bottom:18px;color:#fff;background:rgba(0,0,0,.42);padding:2px 8px;border-radius:4px;font-size:13px}
    .play-dot{position:absolute;right:23px;bottom:28px;width:43px;height:43px;border-radius:50%;display:grid;place-items:center;color:#061321;background:var(--cyan);box-shadow:0 0 24px rgba(72,215,255,.55)}
    .cover-info{display:flex;justify-content:space-between;gap:12px;margin-top:18px;color:var(--muted);font-size:13px}
    .progress{height:5px;background:rgba(255,255,255,.1);border-radius:5px;margin-top:16px;overflow:hidden}
    .progress i{display:block;width:68%;height:100%;background:linear-gradient(90deg,var(--cyan),var(--blue))}
    section{padding:70px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:28px}
    .section-head p{max-width:590px;color:var(--muted);margin-bottom:0}
    .section-kicker{color:var(--amber);font-size:13px;font-weight:700;margin-bottom:8px}
    .filter-box{border-radius:var(--radius-lg);padding:22px;margin-bottom:26px}
    .filter-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
    .filter-title{color:var(--muted);font-size:13px;margin-right:6px}
    .filter-chip{border:1px solid var(--line);color:var(--muted);border-radius:999px;padding:8px 15px;background:rgba(255,255,255,.035);cursor:pointer}
    .filter-chip:hover,.filter-chip.selected{color:var(--text);border-color:var(--cyan);background:rgba(72,215,255,.11)}
    .page-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:24px;align-items:start}
    .content-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .content-card{padding:15px;border-radius:18px;transition:.25s}
    .content-card:hover{transform:translateY(-4px);border-color:var(--line-bright);box-shadow:var(--glow)}
    .thumb{height:142px;border-radius:13px;margin-bottom:15px;position:relative;overflow:hidden;background:linear-gradient(135deg,#1b4974,#0b1b30 58%,#163b55)}
    .thumb.two{background:linear-gradient(135deg,#234665,#0c1d34 58%,#385472)}
    .thumb.three{background:linear-gradient(135deg,#314b62,#0a1930 62%,#18586a)}
    .thumb.four{background:linear-gradient(135deg,#324b78,#0b203c 60%,#1c6c78)}
    .thumb:before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(0deg,transparent 0 18px,rgba(255,255,255,.045) 19px 20px);transform:skewY(-8deg) scale(1.2)}
    .thumb-label{position:absolute;left:12px;top:11px;color:var(--cyan);font:12px ui-monospace,monospace}
    .thumb-caption{position:absolute;bottom:12px;left:12px;color:#fff;background:rgba(0,0,0,.38);padding:3px 7px;border-radius:4px;font-size:12px}
    .thumb-play{position:absolute;right:13px;bottom:12px;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;color:#061321;background:var(--cyan);font-size:12px}
    .card-meta{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:9px}
    .tag{font-size:11px;color:var(--green);background:rgba(88,224,189,.1);border:1px solid rgba(88,224,189,.25);padding:3px 8px;border-radius:999px}
    .tag.warm{color:var(--amber);border-color:rgba(255,191,105,.3);background:rgba(255,191,105,.08)}
    .content-card p{font-size:13px;color:var(--muted);margin-bottom:13px}
    .text-link{color:var(--cyan);font-size:13px;font-weight:700}
    .text-link:hover{color:#fff}
    .side-panel{padding:22px;border-radius:var(--radius-lg);background:rgba(11,27,48,.72);border:1px solid var(--line);position:sticky;top:103px}
    .side-panel h3{font-size:17px}
    .side-panel p{color:var(--muted);font-size:13px}
    .side-links{display:grid;gap:8px;margin:18px 0}
    .side-links a{padding:10px 12px;border-radius:10px;color:var(--muted);border:1px solid transparent}
    .side-links a:hover{color:var(--text);border-color:var(--line-bright);background:rgba(72,215,255,.07)}
    .status-line{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
    .status-line strong{color:var(--green);font-weight:600}
    .note-box{padding:18px;border-left:3px solid var(--amber);background:rgba(255,191,105,.07);color:var(--muted);font-size:13px;border-radius:0 12px 12px 0}
    .steps{display:grid;grid-template-columns:1fr 1.2fr 1fr;gap:16px}
    .step{padding:22px;border-top:1px solid var(--line-bright);background:rgba(255,255,255,.025)}
    .step-num{color:var(--cyan);font:700 13px ui-monospace,monospace}
    .step p{color:var(--muted);font-size:14px;margin-bottom:0}
    .faq-wrap{border-radius:var(--radius-lg);overflow:hidden}
    .accordion{margin:0;background:transparent}
    .accordion-item,.accordion-title,.accordion-content{background:transparent;border-color:var(--line)}
    .accordion-title{color:var(--text);font-weight:700;padding:20px 22px}
    .accordion-title:hover{background:rgba(72,215,255,.06);color:var(--cyan)}
    .accordion-content{color:var(--muted);padding:0 22px 20px;font-size:14px}
    .accordion-title:before{color:var(--cyan)}
    .cta-box{border-radius:var(--radius-xl);padding:38px 42px;display:flex;justify-content:space-between;gap:28px;align-items:center;background:linear-gradient(120deg,rgba(22,119,255,.22),rgba(15,35,59,.82))}
    .cta-box p{color:var(--muted);max-width:650px;margin-bottom:0}
    footer{margin-top:30px;padding:50px 0 22px;background:#05101d;border-top:1px solid var(--line)}
    .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px}
    .footer-brand p{color:var(--muted);font-size:13px;max-width:360px;margin-top:16px}
    .footer-title{font-weight:700;margin-bottom:12px}
    .footer-links{display:grid;gap:8px}
    .footer-links a{color:var(--muted);font-size:13px}
    .footer-links a:hover{color:var(--cyan)}
    .copyright{display:flex;justify-content:space-between;gap:15px;border-top:1px solid var(--line);margin-top:38px;padding-top:18px;color:var(--dim);font-size:12px}
    @media(max-width:900px){
      .hero-grid,.page-layout{grid-template-columns:1fr}
      .side-panel{position:static}
      .cta-box{align-items:flex-start;flex-direction:column}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 36px))}
      .topbar{min-height:68px;align-items:flex-start;padding:14px 0}
      .brand-text{font-size:14px;white-space:normal;line-height:1.25}
      .main-nav{width:100%;flex-wrap:wrap;justify-content:flex-end}
      .main-nav>a{padding:7px 9px;font-size:13px}
      .mega-panel{right:-5px;width:min(340px,calc(100vw - 36px))}
      .hero{padding-top:48px}
      .hero-copy>p{font-size:16px}
      section{padding:55px 0}
      .section-head{display:block}
      .section-head p{margin-top:12px}
      .steps{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
    }
    @media(max-width:520px){
      .main-nav{justify-content:flex-start;gap:3px}
      .main-nav>a{font-size:12px;padding:6px 8px}
      .menu-toggle{font-size:12px;padding:6px 9px}
      .mega-grid,.content-grid{grid-template-columns:1fr}
      .cover-screen{height:180px}
      .actions .button{width:100%}
      .filter-row{flex-wrap:nowrap;overflow-x:auto;padding-bottom:5px}
      .filter-chip{white-space:nowrap}
      .cta-box{padding:28px 22px}
      .footer-grid{grid-template-columns:1fr}
      .copyright{display:block}
      .copyright span{display:block;margin-bottom:6px}
    }