/* roulang page: index */
:root{--bg:#0b0b10;--panel:#12131a;--card:#181a22;--paper:#f3f1ec;--ink:#171820;--white:#f7f7fa;--muted:#a9adba;--line:rgba(255,255,255,.11);--purple:#a855f7;--mint:#63f5c5;--coral:#ff704d;--radius:14px;--shadow:0 16px 38px rgba(0,0,0,.26)}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--white);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.8}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input,select,textarea{font:inherit}button{cursor:pointer}.container{max-width:1240px;margin:0 auto;padding:0 28px}.site-header{position:sticky;top:0;z-index:20;background:#0b0b10;border-bottom:1px solid var(--line);box-shadow:0 4px 20px rgba(0,0,0,.24)}.site-header:after{content:"";position:absolute;bottom:-1px;left:8%;width:28%;height:1px;background:var(--mint);box-shadow:0 0 12px var(--mint)}.nav-wrap{height:74px;display:flex;align-items:center;gap:28px}.brand{font-size:19px;font-weight:800;letter-spacing:-.04em;white-space:nowrap}.brand-mark{display:inline-block;width:12px;height:12px;margin-right:9px;background:var(--mint);transform:skew(-18deg);box-shadow:5px 0 0 var(--purple)}.main-nav{display:flex;align-items:center;gap:8px;margin-left:auto}.main-nav a{position:relative;padding:11px 14px;color:var(--muted);font-size:14px;transition:.2s}.main-nav a:hover,.main-nav a:focus{color:var(--white)}.main-nav a.active{color:var(--mint)}.main-nav a.active:after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--mint);box-shadow:0 0 10px var(--mint)}.nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border:1px solid transparent;border-radius:8px;font-weight:700;transition:transform .2s,box-shadow .2s,background .2s}.nav-cta{background:var(--purple);color:#fff;margin-left:8px;font-size:14px}.nav-cta:hover,.btn:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(168,85,247,.25)}.menu-toggle{display:none;background:none;color:var(--white);border:1px solid var(--line);border-radius:7px;padding:7px 11px}.section{padding:94px 0}.eyebrow,.badge{display:inline-flex;align-items:center;gap:7px;color:var(--mint);font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}.eyebrow:before{content:"";width:22px;height:2px;background:var(--mint)}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(34px,5vw,56px);line-height:1.16;letter-spacing:-.055em;font-weight:800;margin:18px 0 18px}h2{font-size:clamp(27px,3.4vw,38px);line-height:1.25;letter-spacing:-.04em;margin-bottom:14px}h3{font-size:19px;line-height:1.4;margin-bottom:9px}.lead{color:var(--muted);font-size:17px;max-width:730px;line-height:1.85}.intro{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px}.intro p{color:var(--muted);max-width:590px;margin-bottom:0}.scoreboard{padding:68px 0 68px;background-color:#101118;background-image:radial-gradient(rgba(99,245,197,.13) 1px,transparent 1px),linear-gradient(90deg,transparent 49.8%,rgba(168,85,247,.08) 50%,transparent 50.2%);background-size:18px 18px,100% 100%}.score-top{display:flex;justify-content:space-between;align-items:flex-end;gap:35px}.score-copy{max-width:780px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.btn-primary{background:var(--mint);color:#0b0b10}.btn-secondary{border-color:rgba(99,245,197,.55);color:var(--mint);background:transparent}.btn-secondary:hover{background:rgba(99,245,197,.08)}.score-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:12px;margin-top:48px}.score-card{position:relative;min-height:142px;padding:22px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.score-card:before{content:"";position:absolute;top:0;left:0;width:46px;height:2px;background:var(--purple)}.score-card:first-child:before{width:72px;background:var(--mint)}.score-card strong{display:block;font-size:28px;line-height:1.25;margin:12px 0 5px}.score-card:first-child strong{font-size:35px}.score-card small{color:var(--muted);font-size:13px}.matrix{background:var(--bg)}.matrix-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:14px}.matrix-card{padding:24px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);transition:.2s}.matrix-card:hover{border-color:rgba(99,245,197,.48);transform:translateY(-3px)}.matrix-card:nth-child(1){grid-column:span 7}.matrix-card:nth-child(2){grid-column:span 5}.matrix-card:nth-child(3){grid-column:span 4}.matrix-card:nth-child(4){grid-column:span 4}.matrix-card:nth-child(5){grid-column:span 4}.icon{width:38px;height:38px;display:grid;place-items:center;color:var(--mint);border:1px solid rgba(99,245,197,.4);border-radius:9px;margin-bottom:18px}.matrix-card p{color:var(--muted);font-size:14px;margin-bottom:17px;line-height:1.7}.text-link{color:var(--mint);font-size:14px;font-weight:700}.tag{display:inline-block;padding:3px 8px;border:1px solid var(--line);border-radius:5px;color:var(--muted);font-size:12px;margin-right:5px}.comparison{background:var(--paper);color:var(--ink)}.comparison .intro p{color:#656772}.compare-grid{display:grid;grid-template-columns:1fr 48px 1fr;align-items:stretch;gap:20px}.compare-panel{padding:30px;background:#fff;border:1px solid #dedbd3;border-radius:var(--radius)}.compare-panel.accent{background:#171820;color:#fff;border-color:#171820}.compare-panel p{color:#71727a;font-size:14px}.accent p{color:#b9bbc4}.compare-divider{display:flex;align-items:center;justify-content:center;color:var(--purple);font-weight:800}.bar-item{margin:22px 0}.bar-item label{display:flex;justify-content:space-between;font-size:13px;margin-bottom:7px}.bar{height:7px;background:#dedbd3;border-radius:8px;overflow:hidden}.bar i{display:block;height:100%;background:var(--purple);border-radius:8px}.accent .bar{background:#30313b}.accent .bar i{background:var(--mint)}.summary-strip{margin-top:18px;padding:16px 20px;border-left:3px solid var(--coral);background:rgba(168,85,247,.08);font-size:15px}.faq-section{background:var(--panel)}.accordion{margin:28px 0 0;background:transparent}.accordion-item{border:1px solid var(--line);border-bottom:0;background:var(--card)}.accordion-item:last-child{border-bottom:1px solid var(--line)}.accordion-title{color:var(--white);font-size:17px;font-weight:700;padding:20px 24px}.accordion-title:hover,.accordion-title:focus{background:#20222c;color:var(--mint)}.accordion-content{background:#101117;color:var(--muted);font-size:15px;padding:18px 24px;line-height:1.85}.form-section{background:var(--paper);color:var(--ink)}.form-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:62px;align-items:start}.form-copy p{color:#62636c}.form-note{padding:16px;border-left:3px solid var(--purple);background:#e8e5de;color:#555761;font-size:14px;margin-top:26px}.contact-form{background:#fff;padding:30px;border-radius:var(--radius);box-shadow:var(--shadow)}label{font-weight:700;font-size:14px;color:var(--ink);margin-bottom:6px}input,select,textarea{border:1px solid #d3d0c8;background:#faf9f6;border-radius:7px;box-shadow:none;color:var(--ink);min-height:46px;margin-bottom:17px}textarea{min-height:115px;resize:vertical}.consent{display:flex;gap:8px;align-items:flex-start;font-size:13px;color:#666;line-height:1.6}.consent input{min-height:16px;margin-top:5px}.form-submit{width:100%;border:0;background:var(--purple);color:#fff}.form-status{display:none;margin-top:14px;padding:10px 13px;border-radius:6px;background:#ddf8ed;color:#17634f;font-size:14px}.site-footer{padding:56px 0 25px;border-top:1px solid rgba(99,245,197,.35);background:#08080c}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:35px}.footer-brand{font-size:19px;font-weight:800;margin-bottom:10px}.footer-copy{color:var(--muted);font-size:14px;max-width:330px}.footer-title{color:var(--white);font-weight:700;margin-bottom:13px}.footer-links{display:flex;flex-direction:column;gap:7px;color:var(--muted);font-size:14px}.footer-links a:hover{color:var(--mint)}.copyright{border-top:1px solid var(--line);margin-top:42px;padding-top:18px;color:#737683;font-size:12px;display:flex;justify-content:space-between;gap:15px}.focus-ring:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--mint);outline-offset:3px}.section-label{color:var(--purple);font-size:13px;font-weight:800}.metric-note{font-family:ui-monospace,SFMono-Regular,monospace;color:var(--muted);font-size:11px}
    @media(max-width:1024px){.score-grid{grid-template-columns:repeat(2,1fr)}.score-card:first-child{grid-column:span 2}.matrix-card:nth-child(n){grid-column:span 6}.section{padding:76px 0}}
    @media(max-width:768px){.container{padding:0 22px}.nav-wrap{height:68px}.menu-toggle{display:block;margin-left:auto}.main-nav{display:none;position:absolute;top:68px;left:0;right:0;padding:14px 22px 20px;flex-direction:column;align-items:stretch;background:#0b0b10;border-bottom:1px solid var(--line)}.main-nav.open{display:flex}.main-nav a{padding:12px}.nav-cta{margin:7px 0 0}.score-top,.intro{display:block}.intro p{margin-top:12px}.compare-grid{grid-template-columns:1fr;gap:12px}.compare-divider{height:20px}.form-layout{grid-template-columns:1fr;gap:28px}.footer-grid{grid-template-columns:1fr 1fr}.copyright{display:block}.copyright span{display:block;margin-top:8px}}
    @media(max-width:520px){.container{padding:0 16px}h1{font-size:34px}.scoreboard{padding:52px 0}.score-grid{grid-template-columns:1fr;gap:10px}.score-card:first-child{grid-column:auto}.score-card:first-child strong{font-size:30px}.matrix-card:nth-child(n){grid-column:span 12}.section{padding:62px 0}.actions .btn{width:100%}.contact-form{padding:21px}.footer-grid{grid-template-columns:1fr}.copyright{margin-top:28px}}

/* roulang page: category1 */
:root{--bg:#0b0b10;--panel:#12131a;--card:#181a22;--paper:#f3f1ec;--ink:#171820;--white:#f7f7fa;--muted:#a9adba;--line:rgba(255,255,255,.11);--purple:#a855f7;--mint:#63f5c5;--coral:#ff704d;--radius:14px;--shadow:0 16px 38px rgba(0,0,0,.26)}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--white);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input,select{font:inherit}
    button{cursor:pointer}
    .container{max-width:1240px;margin:0 auto;padding:0 28px}
    .site-header{position:sticky;top:0;z-index:20;background:#0b0b10;border-bottom:1px solid var(--line);box-shadow:0 4px 20px rgba(0,0,0,.24)}
    .site-header:after{content:"";position:absolute;bottom:-1px;left:8%;width:28%;height:1px;background:var(--mint);box-shadow:0 0 12px var(--mint)}
    .nav-wrap{height:74px;display:flex;align-items:center;gap:28px}
    .brand{font-size:19px;font-weight:800;letter-spacing:-.04em;white-space:nowrap}
    .brand-mark{display:inline-block;width:12px;height:12px;margin-right:9px;background:var(--mint);transform:skew(-18deg);box-shadow:5px 0 0 var(--purple)}
    .main-nav{display:flex;align-items:center;gap:8px;margin-left:auto}
    .main-nav a{position:relative;padding:11px 14px;color:var(--muted);font-size:14px;transition:.2s}
    .main-nav a:hover,.main-nav a:focus{color:var(--white)}
    .main-nav a.active{color:var(--mint)}
    .main-nav a.active:after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--mint);box-shadow:0 0 10px var(--mint)}
    .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border:1px solid transparent;border-radius:8px;font-weight:700;transition:transform .2s,box-shadow .2s,background .2s}
    .nav-cta{background:var(--purple);color:#fff;margin-left:8px;font-size:14px}
    .nav-cta:hover,.btn:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(168,85,247,.25)}
    .nav-cta:active,.btn:active{transform:translateY(0)}
    .menu-toggle{display:none;background:none;color:var(--white);border:1px solid var(--line);border-radius:7px;padding:7px 11px}
    .focus-ring:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--mint);outline-offset:3px}
    .page-head{position:relative;padding:70px 0 58px;background:var(--panel);overflow:hidden;border-bottom:1px solid var(--line)}
    .page-head:before{content:"";position:absolute;inset:0;opacity:.16;background-image:radial-gradient(var(--mint) 1px,transparent 1px);background-size:20px 20px;mask-image:linear-gradient(90deg,#000,transparent 70%)}
    .page-head:after{content:"";position:absolute;left:0;bottom:0;width:46%;height:2px;background:var(--purple);box-shadow:0 0 18px var(--purple)}
    .page-head .container{position:relative;z-index:1}
    .crumbs{color:var(--muted);font-size:13px;margin-bottom:23px}
    .crumbs a:hover{color:var(--mint)}
    h1,h2,h3{margin-top:0;letter-spacing:-.035em}
    h1{font-size:clamp(34px,5vw,52px);line-height:1.18;margin-bottom:18px;font-weight:800;max-width:800px}
    h2{font-size:clamp(27px,3.5vw,36px);line-height:1.25;margin-bottom:15px}
    h3{font-size:20px;line-height:1.4;margin-bottom:8px}
    .lead{color:var(--muted);font-size:17px;max-width:760px;line-height:1.85;margin-bottom:22px}
    .badges{display:flex;flex-wrap:wrap;gap:8px}
    .badge,.tag{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:6px;color:var(--muted);font-size:12px;padding:3px 9px}
    .badge{color:var(--mint);border-color:rgba(99,245,197,.35);letter-spacing:.05em}
    .section{padding:82px 0}
    .section-kicker{color:var(--purple);font-size:13px;font-weight:800;letter-spacing:.09em;margin-bottom:10px}
    .section-intro{color:var(--muted);max-width:700px;margin-bottom:32px}
    .filter-bar{display:flex;align-items:center;gap:13px;flex-wrap:wrap;padding:15px 17px;background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:30px}
    .filter-label{color:var(--muted);font-size:13px;font-weight:700}
    .filter-btn{border:1px solid var(--line);background:transparent;color:var(--muted);border-radius:6px;padding:7px 13px;font-size:13px;transition:.2s}
    .filter-btn:hover,.filter-btn.active{background:var(--mint);border-color:var(--mint);color:#0b0b10}
    .sort-select{margin-left:auto;min-height:38px;margin-bottom:0;padding:5px 30px 5px 10px;border:1px solid var(--line);background:#111219;color:var(--white);border-radius:6px;font-size:13px}
    .feature-card{display:grid;grid-template-columns:42% 58%;background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;margin-bottom:35px;box-shadow:var(--shadow)}
    .feature-visual{min-height:300px;position:relative;background:#171321;display:flex;align-items:center;justify-content:center;overflow:hidden}
    .feature-visual:before{content:"";position:absolute;width:260px;height:260px;border:1px solid rgba(168,85,247,.5);transform:rotate(45deg);box-shadow:0 0 45px rgba(168,85,247,.2)}
    .feature-visual:after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(0deg,transparent 0 11px,rgba(255,255,255,.025) 12px)}
    .visual-code{position:relative;z-index:1;width:64%;padding:22px;border:1px solid rgba(99,245,197,.45);background:#0d1115;box-shadow:12px 12px 0 rgba(168,85,247,.16)}
    .visual-code span{display:block;height:8px;margin:8px 0;background:var(--mint);opacity:.8}
    .visual-code span:nth-child(2){width:72%;background:var(--purple)}.visual-code span:nth-child(3){width:88%;background:#fff;opacity:.35}.visual-code span:nth-child(4){width:48%;background:var(--coral)}
    .feature-content{padding:38px 40px}
    .feature-content p{color:var(--muted);max-width:610px}
    .feature-meta{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0 25px}
    .btn-primary{background:var(--mint);color:#0b0b10}.btn-secondary{border-color:rgba(99,245,197,.55);color:var(--mint);background:transparent}
    .content-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;align-items:start}
    .content-list{display:flex;flex-direction:column;gap:13px}
    .list-card{display:grid;grid-template-columns:156px 1fr;gap:22px;padding:19px;background:var(--card);border:1px solid var(--line);border-radius:12px;transition:.2s}
    .list-card:hover{border-color:rgba(99,245,197,.5);transform:translateY(-2px)}
    .thumb{height:116px;border-radius:8px;background:#24202e;position:relative;overflow:hidden}
    .thumb:before{content:"";position:absolute;inset:18px;border:1px solid rgba(99,245,197,.5);transform:skew(-18deg)}
    .thumb:after{content:"";position:absolute;left:15%;right:15%;bottom:24px;height:3px;background:var(--purple);box-shadow:0 0 12px var(--purple)}
    .list-card p{color:var(--muted);font-size:14px;line-height:1.7;margin:7px 0 9px}
    .meta{color:#818593;font-size:12px}
    .side-panel{padding:24px;background:var(--panel);border:1px solid var(--line);border-radius:12px;position:sticky;top:100px}
    .side-panel h3{font-size:18px}.side-panel p{color:var(--muted);font-size:14px}
    .side-list{list-style:none;margin:16px 0 0;padding:0;border-top:1px solid var(--line)}
    .side-list li{padding:12px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}
    .side-list li:before{content:"—";color:var(--mint);margin-right:8px}
    .reading-panel{background:var(--paper);color:var(--ink);padding:55px 0}
    .reading-grid{display:grid;grid-template-columns:1fr 1fr;gap:46px}
    .reading-panel p{color:#5e6068;line-height:1.85}
    .reading-panel h2{color:var(--ink)}
    .reading-panel h3{color:var(--ink);font-size:19px;margin-top:21px}
    .check-list{list-style:none;margin:12px 0;padding:0}
    .check-list li{position:relative;padding:7px 0 7px 25px;color:#5e6068}
    .check-list li:before{content:"+";position:absolute;left:0;color:var(--purple);font-weight:800}
    .faq-block{background:var(--panel)}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px}
    .faq-item{border:1px solid var(--line);border-left:3px solid var(--purple);background:var(--card);border-radius:8px;padding:21px 23px}
    .faq-item h3{font-size:17px;color:var(--white);margin-bottom:8px}
    .faq-item p{color:var(--muted);font-size:14px;line-height:1.75;margin:0}
    .action-strip{padding:47px 0;background:#15111c;border-top:1px solid var(--line)}
    .action-layout{display:flex;align-items:center;justify-content:space-between;gap:25px}
    .action-strip p{color:var(--muted);margin:0;max-width:670px}
    .site-footer{padding:56px 0 25px;border-top:1px solid rgba(99,245,197,.35);background:#08080c}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:35px}
    .footer-brand{font-size:19px;font-weight:800;margin-bottom:10px}.footer-copy{color:var(--muted);font-size:14px;max-width:330px}
    .footer-title{color:var(--white);font-weight:700;margin-bottom:13px}.footer-links{display:flex;flex-direction:column;gap:7px;color:var(--muted);font-size:14px}.footer-links a:hover{color:var(--mint)}
    .copyright{border-top:1px solid var(--line);margin-top:42px;padding-top:18px;color:#737683;font-size:12px;display:flex;justify-content:space-between;gap:15px}
    @media(max-width:900px){.container{padding:0 22px}.content-layout{grid-template-columns:1fr}.side-panel{position:static}.feature-card{grid-template-columns:1fr}.feature-visual{min-height:230px}.reading-grid{gap:25px}}
    @media(max-width:640px){.container{padding:0 16px}.nav-wrap{height:68px}.menu-toggle{display:block;margin-left:auto}.main-nav{display:none;position:absolute;top:68px;left:0;right:0;margin:0;padding:12px 16px 18px;background:#0b0b10;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:2px}.main-nav.open{display:flex}.main-nav a{padding:13px 15px}.main-nav .nav-cta{margin:7px 0 0;text-align:center}.page-head{padding:47px 0 42px}h1{font-size:34px}.section{padding:58px 0}.filter-bar{align-items:flex-start}.sort-select{margin-left:0;width:100%}.feature-content{padding:26px 22px}.feature-visual{min-height:190px}.content-layout,.reading-grid,.faq-grid{grid-template-columns:1fr}.list-card{grid-template-columns:104px 1fr;gap:14px;padding:14px}.thumb{height:91px}.list-card h3{font-size:17px}.list-card p{font-size:13px}.action-layout{align-items:flex-start;flex-direction:column}.action-layout .btn{width:100%}.footer-grid{grid-template-columns:1fr;gap:25px}.copyright{flex-direction:column;gap:5px}}