/* roulang page: index */
:root{--bg:#f5f9ff;--surface:#fff;--soft:#edf5ff;--primary:#1769d2;--primary-dark:#0d3f88;--accent:#f2a93b;--ink:#10233f;--muted:#62738c;--line:#dce7f4;--ring:#8bc1ff;--radius:22px;--shadow:0 18px 50px rgba(31,79,135,.11);--container:1180px}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}a{text-decoration:none;color:inherit}img{display:block;max-width:100%}button,input{font:inherit}.container{width:min(var(--container),calc(100% - 40px));margin:auto}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(15px);border-bottom:1px solid var(--line)}.nav{height:78px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:10px;font-weight:850;font-size:1.25rem;letter-spacing:-.04em;white-space:nowrap}.brand-mark{width:34px;height:34px;border-radius:11px;background:var(--primary);color:white;display:grid;place-items:center;box-shadow:0 7px 16px rgba(23,105,210,.25)}.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}.nav-link{padding:10px 13px;border-radius:10px;font-size:.9rem;font-weight:650;color:var(--muted);transition:.2s}.nav-link:hover,.nav-link.active{color:var(--primary);background:var(--soft)}.nav-actions{display:flex;gap:10px;margin-left:12px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:12px;padding:12px 18px;font-weight:750;font-size:.9rem;cursor:pointer;transition:transform .2s,background .2s,box-shadow .2s}.btn:hover{transform:translateY(-2px)}.btn:active{transform:translateY(0)}.btn:focus-visible,.nav-link:focus-visible,input:focus-visible{outline:4px solid rgba(139,193,255,.5);outline-offset:2px}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px rgba(23,105,210,.2)}.btn-primary:hover{background:var(--primary-dark)}.btn-secondary{background:#fff;color:var(--primary);border-color:#bfd4ed}.btn-secondary:hover{background:var(--soft);border-color:var(--primary)}.menu-toggle{display:none;margin-left:auto;background:white;border:1px solid var(--line);border-radius:10px;padding:9px 12px;color:var(--primary);font-weight:700}.hero{padding:76px 0 62px;background:linear-gradient(135deg,#f8fbff 0%,#eaf4ff 100%)}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:58px;align-items:center}.eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--primary);font-size:.76rem;font-weight:800;text-transform:uppercase;letter-spacing:.12em}.eyebrow:before{content:"";width:26px;height:2px;background:var(--accent)}h1,h2,h3{line-height:1.15;letter-spacing:-.045em;margin:0 0 18px}h1{font-size:clamp(2.7rem,6vw,5.2rem);max-width:700px}h2{font-size:clamp(2rem,4vw,3rem)}h3{font-size:1.25rem}.hero-copy{font-size:1.12rem;color:var(--muted);max-width:650px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0}.proof-row{display:flex;gap:20px;flex-wrap:wrap;color:var(--muted);font-size:.86rem}.proof-row strong{color:var(--ink);display:block}.hero-visual{position:relative;min-height:430px;border-radius:30px;overflow:hidden;box-shadow:var(--shadow);background:#cfe4fa}.hero-visual img{width:100%;height:100%;min-height:430px;object-fit:cover}.visual-card{position:absolute;left:24px;bottom:24px;background:rgba(255,255,255,.94);border:1px solid white;border-radius:17px;padding:16px 18px;box-shadow:0 12px 30px rgba(24,64,105,.18);max-width:250px}.visual-card strong{display:block;font-size:1.1rem}.section{padding:90px 0}.section-head{max-width:700px;margin-bottom:42px}.section-head p{color:var(--muted);font-size:1.03rem;margin:0}.soft-section{background:var(--soft)}.rail{display:grid;grid-template-columns:1.25fr .9fr .9fr;gap:18px}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:27px;box-shadow:0 8px 28px rgba(40,85,135,.06);transition:.22s}.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.feature-main{background:var(--primary);color:#fff}.feature-main p{color:#dcecff}.icon-box{width:45px;height:45px;border-radius:13px;background:#e7f1ff;color:var(--primary);display:grid;place-items:center;font-weight:850;margin-bottom:22px}.feature-main .icon-box{background:rgba(255,255,255,.18);color:#fff}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.step{position:relative;padding-top:22px}.step-number{width:34px;height:34px;display:grid;place-items:center;border-radius:50%;background:var(--primary);color:white;font-weight:800;margin-bottom:18px}.step p,.card p{color:var(--muted);margin:0}.discovery{display:grid;grid-template-columns:.8fr 1.2fr;gap:24px;align-items:stretch}.discovery-image{border-radius:var(--radius);overflow:hidden;min-height:320px}.discovery-image img{height:100%;width:100%;object-fit:cover}.topic-list{display:grid;gap:12px}.topic-item{padding:19px 20px;border:1px solid var(--line);background:#fff;border-radius:16px;display:flex;justify-content:space-between;align-items:center}.topic-item span{color:var(--muted);font-size:.88rem}.scenario-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.scenario-grid .card{padding:23px}.media-stage{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:center}.media-stage img{height:330px;width:100%;object-fit:cover;border-radius:20px}.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.case-label{font-size:.75rem;color:var(--primary);font-weight:800;text-transform:uppercase;letter-spacing:.1em}.access-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.access-card{position:relative}.recommended{border:2px solid var(--primary)}.recommended:before{content:"Recommended path";position:absolute;right:20px;top:20px;color:var(--primary);font-size:.72rem;font-weight:800}.quote-wall{columns:3 250px;column-gap:18px}.quote{break-inside:avoid;margin:0 0 18px;padding:24px;border-radius:18px;background:#fff;border:1px solid var(--line);box-shadow:0 7px 24px rgba(40,85,135,.06)}.quote p{font-size:1rem;margin:0 0 16px}.quote small{color:var(--muted)}.voices{display:flex;gap:14px;overflow:auto;padding-bottom:8px}.voice{min-width:245px;background:#102b50;color:#fff;border-radius:18px;padding:22px}.voice span{color:#a9c9ed;font-size:.84rem}.updates{display:grid;grid-template-columns:1.15fr .85fr;gap:20px}.update-list{display:grid;gap:12px}.update-item{display:grid;grid-template-columns:95px 1fr auto;gap:18px;align-items:center;padding:18px;background:#fff;border:1px solid var(--line);border-radius:15px}.update-item time,.meta{font-size:.78rem;color:var(--muted)}.update-item h3{font-size:1rem;margin:0 0 4px}.update-item p{margin:0;color:var(--muted);font-size:.88rem}.update-item a{color:var(--primary);font-weight:750}.empty{padding:30px;background:#fff;border:1px dashed #abc5e2;border-radius:16px;color:var(--muted)}.cta{padding:46px;border-radius:26px;background:var(--primary-dark);color:#fff;display:flex;justify-content:space-between;align-items:center;gap:25px}.cta p{color:#d7e8fc;margin:0;max-width:650px}.site-footer{background:#0b1e37;color:#c5d4e6;padding:55px 0 25px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}.site-footer h3{color:#fff;font-size:1rem;letter-spacing:0}.footer-links{display:grid;gap:10px;font-size:.9rem}.footer-links a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.13);margin-top:40px;padding-top:20px;font-size:.82rem;display:flex;justify-content:space-between;gap:15px}.mobile-panel{display:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
    @media(max-width:1024px){.nav-links{gap:0}.nav-actions .btn-secondary{display:none}.hero-grid{gap:30px}.scenario-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.container{width:min(var(--container),calc(100% - 28px))}.nav{height:68px}.nav-links,.nav-actions{display:none}.menu-toggle{display:block}.mobile-panel{padding:12px 0 20px;border-top:1px solid var(--line)}.mobile-panel.open{display:grid;gap:5px}.mobile-panel a{padding:12px;border-radius:10px;color:var(--muted);font-weight:700}.mobile-panel a:hover{background:var(--soft);color:var(--primary)}.hero{padding:52px 0}.hero-grid,.discovery,.media-stage,.updates{grid-template-columns:1fr}.hero-visual{min-height:300px}.hero-visual img{min-height:300px}.section{padding:65px 0}.rail,.case-grid,.access-grid{grid-template-columns:1fr}.steps{grid-template-columns:repeat(2,1fr)}.cta{display:block;padding:32px}.cta .btn{margin-top:22px}}
    @media(max-width:520px){h1{font-size:2.55rem}.hero-actions .btn{width:100%}.steps,.scenario-grid{grid-template-columns:1fr}.update-item{grid-template-columns:1fr;gap:5px}.update-item a{margin-top:8px}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:8px}}

/* roulang page: category1 */
:root{--bg:#f5f9ff;--surface:#fff;--soft:#edf5ff;--primary:#1769d2;--primary-dark:#0d3f88;--accent:#f2a93b;--ink:#10233f;--muted:#62738c;--line:#dce7f4;--ring:#8bc1ff;--radius:22px;--shadow:0 18px 50px rgba(31,79,135,.11);--container:1180px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}
    a{text-decoration:none;color:inherit}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    h1,h2,h3,p{margin-top:0}
    h1,h2,h3{line-height:1.15;letter-spacing:-.035em}
    h1{font-size:clamp(2.35rem,5vw,4.6rem);margin-bottom:20px}
    h2{font-size:clamp(1.8rem,3vw,2.65rem);margin-bottom:14px}
    h3{font-size:1.12rem;margin-bottom:9px}
    .container{width:min(var(--container),calc(100% - 40px));margin:auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(15px);border-bottom:1px solid var(--line)}
    .nav{height:78px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:10px;font-weight:850;font-size:1.25rem;letter-spacing:-.04em;white-space:nowrap}
    .brand-mark{width:34px;height:34px;border-radius:11px;background:var(--primary);color:#fff;display:grid;place-items:center;box-shadow:0 7px 16px rgba(23,105,210,.25)}
    .nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
    .nav-link{padding:10px 13px;border-radius:10px;font-size:.9rem;font-weight:650;color:var(--muted);transition:.2s}
    .nav-link:hover,.nav-link.active{color:var(--primary);background:var(--soft)}
    .nav-actions{display:flex;gap:10px;margin-left:12px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:12px;padding:12px 18px;font-weight:750;font-size:.9rem;cursor:pointer;transition:transform .2s,background .2s,box-shadow .2s}
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,.nav-link:focus-visible{outline:4px solid rgba(139,193,255,.5);outline-offset:2px}
    .btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px rgba(23,105,210,.2)}
    .btn-primary:hover{background:var(--primary-dark)}
    .btn-secondary{background:#fff;color:var(--primary);border-color:#bfd4ed}
    .btn-secondary:hover{background:var(--soft);border-color:var(--primary)}
    .menu-toggle{display:none;margin-left:auto;background:#fff;border:1px solid var(--line);border-radius:10px;padding:9px 12px;color:var(--primary);font-weight:700}
    .mobile-panel{display:none}
    .banner{position:relative;overflow:hidden;padding:82px 0 76px;background:var(--primary-dark);color:#fff}
    .banner:after{content:"";position:absolute;right:-10%;top:-45%;width:58%;height:190%;background:var(--primary);transform:skewX(-18deg);opacity:.8}
    .banner .container{position:relative;z-index:1}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--accent);font-size:.76rem;font-weight:800;text-transform:uppercase;letter-spacing:.12em}
    .eyebrow:before{content:"";width:26px;height:2px;background:var(--accent)}
    .banner p{max-width:700px;color:#d8e8fb;font-size:1.08rem;margin-bottom:0}
    .section{padding:88px 0}
    .soft-section{background:var(--soft)}
    .section-head{max-width:700px;margin-bottom:38px}
    .section-head p{color:var(--muted);font-size:1.03rem;margin-bottom:0}
    .download-layout{display:grid;grid-template-columns:.95fr 1.05fr;gap:28px;align-items:stretch}
    .card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:0 8px 28px rgba(40,85,135,.06);transition:.22s}
    .card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .image-card{overflow:hidden;padding:0}
    .image-card img{height:100%;min-height:360px;width:100%;object-fit:cover}
    .check-list,.guide-list{display:grid;gap:14px;padding:0;margin:0;list-style:none}
    .check-list li{display:flex;gap:13px;align-items:flex-start;padding:15px 0;border-bottom:1px solid var(--line)}
    .check-list li:last-child{border-bottom:0}
    .check{width:24px;height:24px;flex:0 0 24px;display:grid;place-items:center;border-radius:50%;background:#e3f4e9;color:#23814a;font-weight:900}
    .muted{color:var(--muted)}
    .step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{position:relative;padding-top:56px}
    .step-number{position:absolute;top:25px;left:27px;width:30px;height:30px;border-radius:9px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:800}
    .compat-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .compat-item{display:flex;justify-content:space-between;gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}
    .compat-item strong{color:var(--primary-dark)}
    .trouble-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .icon-box{width:42px;height:42px;border-radius:13px;background:var(--soft);color:var(--primary);display:grid;place-items:center;font-weight:900;margin-bottom:18px}
    .updates{display:grid;gap:12px}
    .update-item{display:grid;grid-template-columns:105px 1fr auto;gap:18px;align-items:center;padding:18px;background:#fff;border:1px solid var(--line);border-radius:15px}
    .update-item time,.meta{font-size:.78rem;color:var(--muted)}
    .update-item h3{font-size:1rem;margin:0 0 4px}
    .update-item p{margin:0;color:var(--muted);font-size:.88rem}
    .update-item a{color:var(--primary);font-weight:750}
    .empty{padding:30px;border:1px dashed #a9c5e4;border-radius:16px;background:#f9fcff;color:var(--muted)}
    .cta{padding:46px;border-radius:26px;background:var(--primary);color:#fff;display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta p{color:#d7e8fc;margin:0;max-width:650px}
    .site-footer{background:#0b1e37;color:#c5d4e6;padding:55px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
    .site-footer h3{color:#fff;font-size:1rem;letter-spacing:0}
    .footer-links{display:grid;gap:10px;font-size:.9rem}
    .footer-links a:hover{color:#fff}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.13);margin-top:40px;padding-top:20px;font-size:.82rem;display:flex;justify-content:space-between;gap:15px}
    @media(max-width:1024px){.nav-links,.nav-actions{display:none}.menu-toggle{display:block}.nav{height:68px}.mobile-panel.open{display:grid;gap:5px;padding:12px 0 20px;border-top:1px solid var(--line)}.mobile-panel a{padding:12px;border-radius:10px;color:var(--muted);font-weight:700}.mobile-panel a:hover{background:var(--soft);color:var(--primary)}.download-layout{grid-template-columns:1fr}.step-grid{grid-template-columns:repeat(2,1fr)}.trouble-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.container{width:min(var(--container),calc(100% - 28px))}.banner{padding:58px 0}.section{padding:65px 0}.compat-grid,.trouble-grid{grid-template-columns:1fr}.cta{display:block;padding:32px}.cta .btn{margin-top:22px}.update-item{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:8px}}
    @media(max-width:520px){h1{font-size:2.35rem}.step-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.card{padding:22px}.banner:after{right:-35%;width:90%}}

/* roulang page: article */
:root{--bg:#f5f9ff;--surface:#fff;--soft:#edf5ff;--primary:#1769d2;--primary-dark:#0d3f88;--accent:#f2a93b;--ink:#10233f;--muted:#62738c;--line:#dce7f4;--ring:#8bc1ff;--radius:22px;--shadow:0 18px 50px rgba(31,79,135,.11);--container:1180px}
    *{box-sizing:border-box}
    html{scroll-behaviour:smooth;scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}
    a{text-decoration:none;color:inherit}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    .container{width:min(var(--container),calc(100% - 40px));margin:auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(15px);border-bottom:1px solid var(--line)}
    .nav{height:78px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:10px;font-weight:850;font-size:1.25rem;letter-spacing:-.04em;white-space:nowrap}
    .brand-mark{width:34px;height:34px;border-radius:11px;background:var(--primary);color:#fff;display:grid;place-items:center;box-shadow:0 7px 16px rgba(23,105,210,.25)}
    .nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
    .nav-link{padding:10px 13px;border-radius:10px;font-size:.9rem;font-weight:650;color:var(--muted);transition:.2s}
    .nav-link:hover,.nav-link.active{color:var(--primary);background:var(--soft)}
    .nav-actions{display:flex;gap:10px;margin-left:12px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:12px;padding:12px 18px;font-weight:750;font-size:.9rem;cursor:pointer;transition:transform .2s,background .2s,box-shadow .2s}
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,.nav-link:focus-visible,.menu-toggle:focus-visible{outline:4px solid rgba(139,193,255,.5);outline-offset:2px}
    .btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px rgba(23,105,210,.2)}
    .btn-primary:hover{background:var(--primary-dark)}
    .btn-secondary{background:#fff;color:var(--primary);border-color:#bfd4ed}
    .btn-secondary:hover{background:var(--soft);border-color:var(--primary)}
    .menu-toggle{display:none;margin-left:auto;background:#fff;border:1px solid var(--line);border-radius:10px;padding:9px 12px;color:var(--primary);font-weight:700}
    .mobile-panel{display:none}
    .article-hero{padding:82px 0 70px;background:linear-gradient(135deg,#f8fbff 0%,#eaf4ff 100%)}
    .article-intro{max-width:850px}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--primary);font-size:.76rem;font-weight:800;text-transform:uppercase;letter-spacing:.12em}
    .eyebrow:before{content:"";width:26px;height:2px;background:var(--accent)}
    h1,h2,h3{line-height:1.15;letter-spacing:-.035em;margin:0 0 18px}
    h1{font-size:clamp(2.35rem,5vw,4.8rem);max-width:900px}
    h2{font-size:clamp(1.8rem,3vw,2.7rem)}
    h3{font-size:1.2rem}
    .lead{font-size:1.15rem;color:var(--muted);max-width:760px;margin:0 0 25px}
    .meta-row{display:flex;flex-wrap:wrap;gap:12px 20px;color:var(--muted);font-size:.88rem}
    .meta-row strong{color:var(--ink)}
    .article-cover{margin-top:38px;border-radius:26px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);background:#dcecff}
    .article-cover img{width:100%;height:390px;object-fit:cover}
    .section{padding:76px 0}
    .reading-layout{display:grid;grid-template-columns:minmax(0,780px) 280px;gap:54px;align-items:start;justify-content:center}
    .article-body{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:clamp(25px,5vw,55px);box-shadow:0 8px 28px rgba(40,85,135,.06)}
    .article-body h2{margin-top:34px}
    .article-body h3{margin-top:28px}
    .article-body p,.article-body ul,.article-body ol,.article-body blockquote{color:#435872;font-size:1.04rem}
    .article-body ul,.article-body ol{padding-left:24px}
    .article-body li{margin:8px 0}
    .article-body img{border-radius:18px;margin:28px 0;width:100%}
    .article-body blockquote{margin:30px 0;padding:20px 24px;border-left:4px solid var(--accent);background:var(--soft);border-radius:0 15px 15px 0;font-size:1.15rem;font-weight:650;color:var(--ink)}
    .article-side{position:sticky;top:105px}
    .side-card,.action-card,.related-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 8px 25px rgba(40,85,135,.06)}
    .side-card h3{font-size:1rem}
    .side-links{display:grid;gap:10px;color:var(--muted);font-size:.9rem}
    .side-links a:hover{color:var(--primary)}
    .action-band{background:var(--primary-dark);color:#fff;border-radius:26px;padding:40px;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .action-band p{color:#d7e8fc;max-width:650px;margin:0}
    .related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .related-card p{color:var(--muted);margin:0}
    .return-link{display:inline-flex;margin-top:18px;color:var(--primary);font-weight:750}
    .site-footer{background:#0b1e37;color:#c5d4e6;padding:55px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
    .site-footer h3{color:#fff;font-size:1rem;letter-spacing:0}
    .site-footer p{max-width:300px;color:#aebfd3;font-size:.9rem}
    .footer-links{display:grid;gap:10px;font-size:.9rem}
    .footer-links a:hover{color:#fff}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.13);margin-top:40px;padding-top:20px;font-size:.82rem;display:flex;justify-content:space-between;gap:15px}
    .empty-state{text-align:center;padding:45px 25px;color:var(--muted);background:#fff;border:1px dashed #b9cde4;border-radius:18px}
    @media(max-width:1024px){
      .nav-links{gap:0}.nav-actions .btn-secondary{display:none}
      .reading-layout{grid-template-columns:minmax(0,780px)}
      .article-side{position:static;display:grid;grid-template-columns:1fr 1fr;gap:16px}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 28px))}
      .nav{height:68px}.nav-links,.nav-actions{display:none}.menu-toggle{display:block}
      .mobile-panel{padding:12px 0 20px;border-top:1px solid var(--line)}
      .mobile-panel.open{display:grid;gap:5px}
      .mobile-panel a{padding:12px;border-radius:10px;color:var(--muted);font-weight:700}
      .mobile-panel a:hover{background:var(--soft);color:var(--primary)}
      .article-hero{padding:55px 0 45px}.article-cover img{height:260px}
      .section{padding:58px 0}.article-side{grid-template-columns:1fr}
      .action-band{display:block;padding:30px}.action-band .btn{margin-top:22px}
      .related-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
      .footer-bottom{display:grid}
    }
    @media(max-width:520px){
      h1{font-size:2.35rem}.lead{font-size:1rem}
      .article-body{padding:22px 19px}.article-body p,.article-body ul,.article-body ol{font-size:.98rem}
      .article-cover img{height:205px}.footer-grid{grid-template-columns:1fr}
      .meta-row{display:grid;gap:5px}
    }

/* roulang page: category3 */
:root{--bg:#f5f9ff;--surface:#fff;--soft:#edf5ff;--primary:#1769d2;--primary-dark:#0d3f88;--accent:#f2a93b;--ink:#10233f;--muted:#62738c;--line:#dce7f4;--ring:#8bc1ff;--radius:22px;--shadow:0 18px 50px rgba(31,79,135,.11);--container:1180px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}
    a{text-decoration:none;color:inherit}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    .container{width:min(var(--container),calc(100% - 40px));margin:auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(15px);border-bottom:1px solid var(--line)}
    .nav{height:78px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:10px;font-weight:850;font-size:1.25rem;letter-spacing:-.04em;white-space:nowrap}
    .brand-mark{width:34px;height:34px;border-radius:11px;background:var(--primary);color:#fff;display:grid;place-items:center;box-shadow:0 7px 16px rgba(23,105,210,.25)}
    .nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
    .nav-link{padding:10px 13px;border-radius:10px;font-size:.9rem;font-weight:650;color:var(--muted);transition:.2s}
    .nav-link:hover,.nav-link.active{color:var(--primary);background:var(--soft)}
    .nav-actions{display:flex;gap:10px;margin-left:12px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:12px;padding:12px 18px;font-weight:750;font-size:.9rem;cursor:pointer;transition:transform .2s,background .2s,box-shadow .2s}
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,.nav-link:focus-visible,.menu-toggle:focus-visible{outline:4px solid rgba(139,193,255,.5);outline-offset:2px}
    .btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px rgba(23,105,210,.2)}
    .btn-primary:hover{background:var(--primary-dark)}
    .btn-secondary{background:#fff;color:var(--primary);border-color:#bfd4ed}
    .btn-secondary:hover{background:var(--soft);border-color:var(--primary)}
    .menu-toggle{display:none;margin-left:auto;background:#fff;border:1px solid var(--line);border-radius:10px;padding:9px 12px;color:var(--primary);font-weight:700}
    .mobile-panel{display:none}
    .page-banner{padding:76px 0 68px;background:linear-gradient(135deg,#f8fbff 0%,#eaf4ff 100%)}
    .banner-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--primary);font-size:.76rem;font-weight:800;text-transform:uppercase;letter-spacing:.12em}
    .eyebrow:before{content:"";width:26px;height:2px;background:var(--accent)}
    h1,h2,h3{line-height:1.16;letter-spacing:-.035em;margin:0 0 16px}
    h1{font-size:clamp(2.35rem,5vw,4.5rem);max-width:700px}
    h2{font-size:clamp(1.8rem,3vw,2.65rem)}
    h3{font-size:1.18rem}
    .lead{font-size:1.12rem;color:var(--muted);max-width:680px;margin:0}
    .banner-image{border-radius:28px;overflow:hidden;box-shadow:var(--shadow);min-height:310px;background:#d8eafa}
    .banner-image img{width:100%;height:310px;object-fit:cover}
    .section{padding:86px 0}
    .soft-section{background:var(--soft)}
    .section-head{max-width:710px;margin-bottom:38px}
    .section-head p{color:var(--muted);font-size:1.03rem;margin:0}
    .guide-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:22px}
    .card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:0 8px 28px rgba(40,85,135,.06);transition:.22s}
    .card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .guide-feature{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px;align-items:stretch}
    .guide-feature img{width:100%;height:100%;min-height:280px;object-fit:cover;border-radius:17px}
    .guide-stack{display:grid;gap:22px}
    .icon-box{width:42px;height:42px;border-radius:13px;background:var(--soft);color:var(--primary);display:grid;place-items:center;font-weight:850;margin-bottom:18px}
    .card p{color:var(--muted);margin:0}
    .guide-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .guide-item{padding:22px;border:1px solid var(--line);border-radius:17px;background:#fff;display:flex;gap:16px;align-items:flex-start}
    .guide-item strong{display:block;margin-bottom:5px}
    .guide-item span{display:block;color:var(--muted);font-size:.9rem}
    .checklist{display:grid;gap:13px;margin:0;padding:0;list-style:none}
    .checklist li{display:flex;gap:12px;align-items:flex-start;padding:15px 16px;background:#fff;border:1px solid var(--line);border-radius:14px;color:var(--muted)}
    .checklist b{color:var(--primary);font-size:1.1rem}
    .scenario-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
    .scenario-grid .card{padding:23px}
    .faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    details{background:#fff;border:1px solid var(--line);border-radius:15px;padding:18px 20px}
    summary{cursor:pointer;font-weight:750;color:var(--ink)}
    details p{color:var(--muted);margin:12px 0 0}
    .cta{padding:45px;border-radius:26px;background:var(--primary-dark);color:#fff;display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta p{color:#d7e8fc;margin:0;max-width:660px}
    .site-footer{background:#0b1e37;color:#c5d4e6;padding:55px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
    .site-footer h3{color:#fff;font-size:1rem;letter-spacing:0}
    .site-footer p{max-width:300px;color:#aebfd4}
    .footer-links{display:grid;gap:10px;font-size:.9rem}
    .footer-links a:hover{color:#fff}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.13);margin-top:40px;padding-top:20px;font-size:.82rem;display:flex;justify-content:space-between;gap:15px}
    @media(max-width:1024px){.nav-links,.nav-actions{display:none}.menu-toggle{display:block}.mobile-panel.open{display:grid;gap:5px;padding:12px 0 20px;border-top:1px solid var(--line)}.mobile-panel a{padding:12px;border-radius:10px;color:var(--muted);font-weight:700}.mobile-panel a:hover{background:var(--soft);color:var(--primary)}.banner-grid,.guide-layout{grid-template-columns:1fr}.scenario-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.container{width:min(var(--container),calc(100% - 28px))}.nav{height:68px}.page-banner{padding:54px 0}.section{padding:64px 0}.guide-feature{grid-template-columns:1fr}.guide-list,.faq-grid{grid-template-columns:1fr}.cta{display:block;padding:32px}.cta .btn{margin-top:22px}}
    @media(max-width:520px){h1{font-size:2.35rem}.banner-image img{height:250px}.scenario-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:grid}.btn{width:100%}}

/* roulang page: category2 */
:root{
      --bg:#f5f9ff;--surface:#fff;--soft:#edf5ff;--primary:#1769d2;
      --primary-dark:#0d3f88;--accent:#f2a93b;--ink:#10233f;--muted:#62738c;
      --line:#dce7f4;--ring:#8bc1ff;--radius:22px;
      --shadow:0 18px 50px rgba(31,79,135,.11);--container:1180px
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}
    a{text-decoration:none;color:inherit}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    .container{width:min(var(--container),calc(100% - 40px));margin:auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(15px);border-bottom:1px solid var(--line)}
    .nav{height:78px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:10px;font-weight:850;font-size:1.25rem;letter-spacing:-.04em;white-space:nowrap}
    .brand-mark{width:34px;height:34px;border-radius:11px;background:var(--primary);color:white;display:grid;place-items:center;box-shadow:0 7px 16px rgba(23,105,210,.25)}
    .nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
    .nav-link{padding:10px 13px;border-radius:10px;font-size:.9rem;font-weight:650;color:var(--muted);transition:.2s}
    .nav-link:hover,.nav-link.active{color:var(--primary);background:var(--soft)}
    .nav-actions{display:flex;gap:10px;margin-left:12px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:12px;padding:12px 18px;font-weight:750;font-size:.9rem;cursor:pointer;transition:transform .2s,background .2s,box-shadow .2s}
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,.nav-link:focus-visible{outline:4px solid rgba(139,193,255,.5);outline-offset:2px}
    .btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px rgba(23,105,210,.2)}
    .btn-primary:hover{background:var(--primary-dark)}
    .btn-secondary{background:#fff;color:var(--primary);border-color:#bfd4ed}
    .btn-secondary:hover{background:var(--soft);border-color:var(--primary)}
    .menu-toggle{display:none;margin-left:auto;background:white;border:1px solid var(--line);border-radius:10px;padding:9px 12px;color:var(--primary);font-weight:700}
    .mobile-panel{display:none}
    .hero{padding:80px 0 72px;background:linear-gradient(135deg,#f8fbff 0%,#eaf4ff 100%)}
    .hero-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:56px;align-items:center}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--primary);font-size:.76rem;font-weight:800;text-transform:uppercase;letter-spacing:.12em}
    .eyebrow:before{content:"";width:26px;height:2px;background:var(--accent)}
    h1,h2,h3{line-height:1.15;letter-spacing:-.035em;margin:0 0 16px}
    h1{font-size:clamp(2.5rem,5vw,4.6rem);max-width:650px}
    h2{font-size:clamp(1.9rem,3vw,2.8rem)}
    h3{font-size:1.18rem}
    .hero-copy{font-size:1.1rem;color:var(--muted);max-width:590px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0}
    .proof-row{display:flex;gap:24px;flex-wrap:wrap;color:var(--muted);font-size:.86rem}
    .proof-row strong{color:var(--ink);display:block}
    .hero-visual{position:relative;min-height:410px;border-radius:30px;overflow:hidden;box-shadow:var(--shadow);background:#cfe4fa}
    .hero-visual img{width:100%;height:100%;min-height:410px;object-fit:cover}
    .visual-card{position:absolute;left:24px;bottom:24px;background:rgba(255,255,255,.95);border:1px solid white;border-radius:17px;padding:16px 18px;box-shadow:0 12px 30px rgba(24,64,105,.18);max-width:275px}
    .visual-card strong{display:block;font-size:1.1rem}
    .visual-card span{color:var(--muted);font-size:.88rem}
    .section{padding:88px 0}
    .soft-section{background:var(--soft)}
    .section-head{max-width:710px;margin-bottom:40px}
    .section-head p{color:var(--muted);font-size:1.03rem;margin:0}
    .feature-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}
    .card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:27px;box-shadow:0 8px 28px rgba(40,85,135,.06);transition:.22s}
    .card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .feature-main{background:var(--primary);color:#fff;min-height:300px;display:flex;flex-direction:column;justify-content:space-between}
    .feature-main p{color:#dcecff}
    .icon-box{width:42px;height:42px;border-radius:13px;background:var(--soft);color:var(--primary);display:grid;place-items:center;font-weight:850;margin-bottom:24px}
    .feature-main .icon-box{background:rgba(255,255,255,.18);color:#fff}
    .feature-stack{display:grid;grid-template-columns:1fr 1fr;gap:20px}
    .metric{font-size:2rem;font-weight:850;color:var(--primary);display:block;margin-bottom:6px}
    .matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .matrix-item{display:flex;gap:15px;align-items:flex-start;padding:22px;background:#fff;border:1px solid var(--line);border-radius:17px}
    .matrix-item b{display:block;margin-bottom:4px}
    .matrix-item p{margin:0;color:var(--muted);font-size:.91rem}
    .checklist{display:grid;gap:12px}
    .check{display:flex;align-items:center;gap:12px;padding:15px 17px;border:1px solid var(--line);border-radius:14px;background:#fff}
    .check-mark{width:25px;height:25px;border-radius:50%;display:grid;place-items:center;background:#e2f5e9;color:#178345;font-weight:900}
    .split-panel{display:grid;grid-template-columns:.9fr 1.1fr;gap:45px;align-items:center}
    .split-panel img{width:100%;height:350px;object-fit:cover;border-radius:24px;box-shadow:var(--shadow)}
    .scenario-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
    .scenario-grid .card{padding:23px}
    .scenario-grid p{color:var(--muted);margin:0;font-size:.91rem}
    .quote-band{padding:36px;border-radius:25px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);display:grid;grid-template-columns:1fr 1fr;gap:25px}
    blockquote{margin:0;padding:22px 24px;background:var(--soft);border-radius:17px;font-size:1.12rem;font-weight:700}
    blockquote cite{display:block;color:var(--muted);font-size:.8rem;font-style:normal;font-weight:600;margin-top:13px}
    .faq-list{display:grid;gap:12px;max-width:850px}
    details{background:#fff;border:1px solid var(--line);border-radius:15px;padding:18px 21px}
    summary{cursor:pointer;font-weight:750;padding-right:25px}
    details p{color:var(--muted);margin:12px 0 0}
    .cta{padding:46px;border-radius:26px;background:var(--primary-dark);color:#fff;display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta p{color:#d7e8fc;margin:0;max-width:650px}
    .site-footer{background:#0b1e37;color:#c5d4e6;padding:55px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
    .site-footer h3{color:#fff;font-size:1rem;letter-spacing:0}
    .site-footer p{max-width:330px;font-size:.9rem}
    .footer-links{display:grid;gap:10px;font-size:.9rem}
    .footer-links a:hover{color:#fff}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.13);margin-top:40px;padding-top:20px;font-size:.82rem;display:flex;justify-content:space-between;gap:15px}
    @media(max-width:1024px){
      .nav-links{gap:0}.nav-actions .btn-secondary{display:none}
      .hero-grid,.feature-layout,.split-panel{grid-template-columns:1fr 1fr;gap:28px}
      .scenario-grid{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 28px))}
      .nav{height:68px}.nav-links,.nav-actions{display:none}.menu-toggle{display:block}
      .mobile-panel{padding:12px 0 20px;border-top:1px solid var(--line)}
      .mobile-panel.open{display:grid;gap:5px}
      .mobile-panel a{padding:12px;border-radius:10px;color:var(--muted);font-weight:700}
      .mobile-panel a:hover{background:var(--soft);color:var(--primary)}
      .hero{padding:55px 0}.hero-grid,.feature-layout,.split-panel,.quote-band{grid-template-columns:1fr}
      .hero-visual{min-height:300px}.hero-visual img{min-height:300px}
      .section{padding:65px 0}.matrix{grid-template-columns:1fr}
      .cta{display:block;padding:32px}.cta .btn{margin-top:22px}
    }
    @media(max-width:520px){
      h1{font-size:2.45rem}.hero-actions .btn{width:100%}
      .scenario-grid,.feature-stack,.footer-grid{grid-template-columns:1fr}
      .proof-row{gap:14px}.hero-visual{border-radius:20px}
      .footer-bottom{display:grid;gap:8px}
    }

/* roulang page: category4 */
:root{--bg:#f5f9ff;--surface:#fff;--soft:#edf5ff;--primary:#1769d2;--primary-dark:#0d3f88;--accent:#f2a93b;--ink:#10233f;--muted:#62738c;--line:#dce7f4;--ring:#8bc1ff;--radius:22px;--shadow:0 18px 50px rgba(31,79,135,.11);--container:1180px}
    *{box-sizing:border-box}
    html{scroll-behaviour:smooth;scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}
    a{text-decoration:none;color:inherit}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    h1,h2,h3,p{margin-top:0}
    h1,h2,h3{line-height:1.15;letter-spacing:-.035em}
    h1{font-size:clamp(2.35rem,5vw,4.4rem);margin-bottom:20px}
    h2{font-size:clamp(1.8rem,3vw,2.65rem);margin-bottom:14px}
    h3{font-size:1.12rem;margin-bottom:9px}
    .container{width:min(var(--container),calc(100% - 40px));margin:auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(15px);border-bottom:1px solid var(--line)}
    .nav{height:78px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:10px;font-weight:850;font-size:1.25rem;letter-spacing:-.04em;white-space:nowrap}
    .brand-mark{width:34px;height:34px;border-radius:11px;background:var(--primary);color:white;display:grid;place-items:center;box-shadow:0 7px 16px rgba(23,105,210,.25)}
    .nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
    .nav-link{padding:10px 13px;border-radius:10px;font-size:.9rem;font-weight:650;color:var(--muted);transition:.2s}
    .nav-link:hover,.nav-link.active{color:var(--primary);background:var(--soft)}
    .nav-actions{display:flex;gap:10px;margin-left:12px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:12px;padding:12px 18px;font-weight:750;font-size:.9rem;cursor:pointer;transition:transform .2s,background .2s,box-shadow .2s}
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,.nav-link:focus-visible,.menu-toggle:focus-visible,.faq summary:focus-visible{outline:4px solid rgba(139,193,255,.5);outline-offset:2px}
    .btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px rgba(23,105,210,.2)}
    .btn-primary:hover{background:var(--primary-dark)}
    .btn-secondary{background:#fff;color:var(--primary);border-color:#bfd4ed}
    .btn-secondary:hover{background:var(--soft);border-color:var(--primary)}
    .menu-toggle{display:none;margin-left:auto;background:#fff;border:1px solid var(--line);border-radius:10px;padding:9px 12px;color:var(--primary);font-weight:700}
    .mobile-panel{display:none}
    .page-banner{padding:66px 0 56px;background:linear-gradient(135deg,#f8fbff,#eaf4ff);border-bottom:1px solid var(--line)}
    .banner-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--primary);font-size:.76rem;font-weight:800;text-transform:uppercase;letter-spacing:.12em}
    .eyebrow:before{content:"";width:26px;height:2px;background:var(--accent)}
    .intro{font-size:1.08rem;color:var(--muted);max-width:700px}
    .banner-image{height:285px;border-radius:26px;overflow:hidden;box-shadow:var(--shadow);background:#d9eaff}
    .banner-image img{height:100%;width:100%;object-fit:cover}
    .section{padding:82px 0}
    .soft-section{background:var(--soft)}
    .section-head{max-width:720px;margin-bottom:38px}
    .section-head p{color:var(--muted);font-size:1.02rem;margin:0}
    .timeline{position:relative;display:grid;gap:18px}
    .timeline:before{content:"";position:absolute;left:94px;top:20px;bottom:20px;width:2px;background:#c8ddf4}
    .release{position:relative;display:grid;grid-template-columns:78px 1fr;gap:35px;align-items:start}
    .release-date{position:relative;z-index:1;text-align:center;color:var(--primary);font-weight:800;font-size:.78rem;text-transform:uppercase;letter-spacing:.08em}
    .release-date strong{display:block;font-size:1.35rem;letter-spacing:-.05em}
    .card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:27px;box-shadow:0 8px 28px rgba(40,85,135,.06);transition:.22s}
    .card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .card p{color:var(--muted);margin-bottom:0}
    .meta{font-size:.78rem;color:var(--muted)}
    .badge{display:inline-flex;padding:5px 9px;border-radius:8px;background:var(--soft);color:var(--primary);font-size:.74rem;font-weight:800}
    .change-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}
    .change-list{display:grid;gap:12px}
    .change-row{display:flex;gap:15px;padding:18px 0;border-bottom:1px solid var(--line)}
    .change-row:last-child{border-bottom:0}
    .check{flex:0 0 25px;height:25px;border-radius:50%;display:grid;place-items:center;background:#e9f6ef;color:#188452;font-weight:900}
    .image-card{padding:0;overflow:hidden}
    .image-card img{width:100%;height:235px;object-fit:cover}
    .image-card .card-content{padding:25px}
    .support-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .faq-list{display:grid;gap:12px;max-width:850px}
    .faq{background:#fff;border:1px solid var(--line);border-radius:15px;padding:0 20px}
    .faq summary{cursor:pointer;padding:19px 0;font-weight:750;list-style:none}
    .faq summary::-webkit-details-marker{display:none}
    .faq p{color:var(--muted);padding:0 0 18px;margin:0}
    .cta{padding:45px;border-radius:26px;background:var(--primary-dark);color:#fff;display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta p{color:#d7e8fc;margin:0;max-width:650px}
    .site-footer{background:#0b1e37;color:#c5d4e6;padding:55px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
    .site-footer h3{color:#fff;font-size:1rem;letter-spacing:0}
    .site-footer p{max-width:280px;color:#9eb2ca;font-size:.9rem}
    .footer-links{display:grid;gap:10px;font-size:.9rem}
    .footer-links a:hover{color:#fff}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.13);margin-top:40px;padding-top:20px;font-size:.82rem;display:flex;justify-content:space-between;gap:15px}
    @media(max-width:1024px){.nav-links{gap:0}.nav-actions .btn-secondary{display:none}.banner-grid{gap:28px}.support-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.container{width:min(var(--container),calc(100% - 28px))}.nav{height:68px}.nav-links,.nav-actions{display:none}.menu-toggle{display:block}.mobile-panel{padding:12px 0 20px;border-top:1px solid var(--line)}.mobile-panel.open{display:grid;gap:5px}.mobile-panel a{padding:12px;border-radius:10px;color:var(--muted);font-weight:700}.mobile-panel a:hover{background:var(--soft);color:var(--primary)}.banner-grid,.change-grid{grid-template-columns:1fr}.page-banner{padding:50px 0}.banner-image{height:245px}.section{padding:64px 0}.footer-grid{grid-template-columns:repeat(2,1fr)}.cta{display:block;padding:32px}.cta .btn{margin-top:22px}.timeline:before{left:38px}.release{grid-template-columns:62px 1fr;gap:18px}}
    @media(max-width:520px){h1{font-size:2.45rem}.support-grid,.footer-grid{grid-template-columns:1fr}.release{grid-template-columns:1fr;gap:10px}.timeline:before{display:none}.release-date{text-align:left}.release-date strong{display:inline;margin-right:8px}.update-note{font-size:.9rem}.footer-bottom{display:grid;gap:8px}.banner-image{height:210px}}