/* roulang page: index */
:root{
            --ink:#26251f;
            --muted:#77756c;
            --paper:#fbf8f0;
            --cream:#f3eddf;
            --orange:#e66b3d;
            --orange-deep:#b84b2a;
            --yellow:#f2bf58;
            --green:#587d61;
            --line:#ded7c8;
            --white:#fffdf8;
            --shadow:0 16px 42px rgba(68,48,25,.10);
            --radius:16px;
            --container:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7;font-size:15px}
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%}
        button,input,select{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(251,248,240,.94);border-bottom:1px solid rgba(222,215,200,.8);backdrop-filter:blur(12px)}
        .nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}
        .brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.2px;white-space:nowrap}
        .brand-mark{width:37px;height:37px;display:grid;place-items:center;background:var(--orange);color:#fff;border-radius:11px;font-size:18px;box-shadow:4px 4px 0 var(--yellow)}
        .brand-text{font-size:19px}
        .nav-links{display:flex;align-items:center;gap:25px}
        .nav-links a{font-size:14px;color:#68665d;position:relative;padding:26px 0}
        .nav-links a:hover,.nav-links a.active{color:var(--orange-deep)}
        .nav-links a.active:after{content:"";position:absolute;left:0;right:0;bottom:17px;height:2px;background:var(--orange)}
        .nav-cta{padding:10px 16px!important;border:1px solid var(--orange);color:var(--orange-deep)!important;border-radius:9px}
        .nav-cta:hover{background:var(--orange);color:#fff!important}
        .menu-btn{display:none;border:0;background:transparent;color:var(--ink);font-size:24px;width:42px;height:42px}
        section{padding:82px 0;scroll-margin-top:76px}
        .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:34px}
        .eyebrow{color:var(--orange-deep);font-size:12px;font-weight:800;letter-spacing:1.6px;text-transform:uppercase;margin-bottom:10px}
        h1,h2,h3,p{margin-top:0}
        h1{font-size:clamp(38px,5vw,66px);line-height:1.13;letter-spacing:0;font-weight:850;margin-bottom:20px}
        h2{font-size:clamp(27px,3vw,39px);line-height:1.25;margin-bottom:12px;letter-spacing:0}
        h3{font-size:18px;line-height:1.4;margin-bottom:8px}
        .section-head p{max-width:520px;color:var(--muted);margin-bottom:2px}
        .hero{padding:58px 0 72px;background:var(--cream);overflow:hidden}
        .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:60px;align-items:center}
        .hero h1 span{color:var(--orange)}
        .hero-sub{font-size:20px;font-weight:700;margin-bottom:13px}
        .hero-copy{font-size:16px;color:#666258;max-width:600px;margin-bottom:28px}
        .actions{display:flex;gap:12px;flex-wrap:wrap}
        .btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid transparent;padding:12px 20px;border-radius:9px;font-weight:750;transition:.2s ease;min-height:46px}
        .btn-primary{background:var(--orange);color:#fff;box-shadow:0 7px 0 #c95632}
        .btn-primary:hover{background:var(--orange-deep);transform:translateY(2px);box-shadow:0 4px 0 #9e3e25}
        .btn-secondary{border-color:#c8bda9;color:var(--ink);background:rgba(255,255,255,.45)}
        .btn-secondary:hover{border-color:var(--orange);color:var(--orange-deep);background:#fff}
        .btn:focus-visible,.nav-links a:focus-visible,.menu-btn:focus-visible,summary:focus-visible{outline:3px solid rgba(230,107,61,.35);outline-offset:3px}
        .hero-art{position:relative;min-height:390px}
        .hero-art img{width:100%;height:390px;object-fit:cover;border-radius:18px;box-shadow:var(--shadow)}
        .hero-note{position:absolute;right:-18px;bottom:22px;background:var(--white);border:1px solid var(--line);padding:16px 18px;border-radius:12px;box-shadow:var(--shadow);max-width:205px}
        .hero-note strong{display:block;font-size:23px;color:var(--orange-deep)}
        .hero-note small{color:var(--muted)}
        .band{background:#fffdf8}
        .pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
        .pain-item{padding:22px;border-top:3px solid var(--orange);background:var(--white);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
        .pain-item b{display:block;font-size:20px;margin-bottom:10px}
        .pain-item p{color:var(--muted);font-size:14px;margin:0}
        .solution-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:50px;align-items:start}
        .solution-intro{font-size:20px;font-weight:700;line-height:1.5}
        .solution-list{border-top:1px solid var(--line)}
        .solution-row{display:grid;grid-template-columns:145px 1fr;gap:24px;padding:20px 0;border-bottom:1px solid var(--line)}
        .solution-row strong{color:var(--orange-deep)}
        .solution-row p{margin:0;color:var(--muted)}
        .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
        .step{padding:25px 24px 25px 0;border-right:1px solid var(--line);margin-right:24px}
        .step:last-child{border:0;margin:0}
        .step-no{color:var(--orange);font-size:14px;font-weight:800;margin-bottom:22px}
        .step p{color:var(--muted);font-size:14px;margin:0}
        .latest{background:#f1eadb}
        .cover-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
        .cover-card{min-width:0}
        .cover-img{position:relative;aspect-ratio:4/3;overflow:hidden;border-radius:12px;background:#ddd}
        .cover-img img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
        .cover-card:hover img{transform:scale(1.045)}
        .badge{position:absolute;top:10px;left:10px;background:var(--white);color:var(--orange-deep);border-radius:5px;padding:3px 8px;font-size:11px;font-weight:800}
        .cover-info{padding:11px 2px}
        .cover-info h3{margin:0 0 3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
        .meta{display:flex;justify-content:space-between;color:var(--muted);font-size:12px}
        .stars{color:#bc7729}
        .popular{background:#252820;color:#fffdf8}
        .popular .section-head p{color:#bdbdaf}
        .popular-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:36px}
        .feature-story{position:relative;min-height:350px;overflow:hidden;border-radius:16px}
        .feature-story img{width:100%;height:100%;position:absolute;inset:0;object-fit:cover;filter:brightness(.66)}
        .story-text{position:absolute;left:28px;bottom:26px;right:25px}
        .story-text h3{font-size:28px}
        .story-text p{color:#e2e0d4;margin:0}
        .rank-list{counter-reset:rank;list-style:none;padding:0;margin:0}
        .rank-list li{display:grid;grid-template-columns:35px 1fr auto;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.14)}
        .rank-list li:before{counter-increment:rank;content:counter(rank,decimal-leading-zero);color:var(--yellow);font-weight:800}
        .rank-list small{color:#aaa99e}
        .channel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
        .channel{padding:22px;background:var(--white);border:1px solid var(--line);border-radius:12px;transition:.2s}
        .channel:hover{transform:translateY(-4px);border-color:var(--orange);box-shadow:var(--shadow)}
        .channel .channel-icon{font-size:26px;margin-bottom:16px}
        .channel p{font-size:13px;color:var(--muted);margin:0}
        .rank-band{background:var(--cream)}
        .rank-columns{display:grid;grid-template-columns:1fr 1fr;gap:40px}
        .rank-box{background:var(--white);padding:8px 22px;border:1px solid var(--line)}
        .rank-box li{color:var(--ink)}
        .rank-box li:before{color:var(--orange)}
        .rank-box small{color:var(--muted)}
        .signal-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}
        .signal-panel{border:1px solid var(--line);padding:28px;background:var(--white)}
        .signal-panel h3{margin-bottom:20px}
        .signal-line{display:flex;justify-content:space-between;gap:20px;padding:14px 0;border-bottom:1px solid var(--line)}
        .signal-line:last-child{border-bottom:0}
        .signal-line span{color:var(--muted)}
        .signal-line b{color:var(--green)}
        .feedback{background:#e7efe5}
        .quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
        .quote{padding:24px;background:var(--white);border-left:4px solid var(--green);box-shadow:0 8px 20px rgba(50,80,49,.06)}
        .quote p{font-size:17px;line-height:1.65;margin-bottom:17px}
        .quote small{color:var(--muted)}
        .scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
        .scene{padding:25px 24px;background:var(--white);border:1px solid var(--line)}
        .scene h3{color:var(--orange-deep)}
        .scene p{color:var(--muted);margin:0;font-size:14px}
        .guide{background:#fffdf8}
        .guide-layout{display:grid;grid-template-columns:1fr 1fr;gap:60px}
        .guide-list{list-style:none;padding:0;margin:0}
        .guide-list li{display:flex;gap:17px;padding:16px 0;border-bottom:1px solid var(--line)}
        .guide-list b{color:var(--orange);min-width:24px}
        .guide-list span{color:var(--muted)}
        .topic-strip{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:16px}
        .topic{min-height:190px;padding:24px;display:flex;flex-direction:column;justify-content:end;border-radius:13px;background-size:cover;background-position:center;color:#fff;position:relative;overflow:hidden}
        .topic:before{content:"";position:absolute;inset:0;background:linear-gradient(transparent,rgba(20,18,13,.78))}
        .topic>*{position:relative}
        .topic h3{margin:0}
        .topic p{margin:5px 0 0;color:#eee;font-size:13px}
        .news{background:#f1eadb}
        .news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
        .news-item{background:var(--white);border:1px solid var(--line)}
        .news-item img{width:100%;height:150px;object-fit:cover}
        .news-copy{padding:17px}
        .news-copy time{font-size:12px;color:var(--orange-deep)}
        .news-copy h3{margin:7px 0 0;font-size:16px}
        .faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
        details{background:var(--white);border:1px solid var(--line);padding:17px 20px}
        summary{cursor:pointer;font-weight:750;list-style:none;display:flex;justify-content:space-between;gap:20px}
        summary::-webkit-details-marker{display:none}
        summary:after{content:"+";color:var(--orange);font-size:21px}
        details[open] summary:after{content:"−"}
        details p{color:var(--muted);font-size:14px;margin:13px 0 0}
        .cta{background:var(--orange);color:#fff;padding:54px 0}
        .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}
        .cta h2{margin:0 0 8px}
        .cta p{margin:0;color:#ffe7d9}
        .cta .btn{background:#fff;color:var(--orange-deep);box-shadow:none}
        .cta .btn:hover{background:#fff1e9}
        .site-footer{background:#252820;color:#e9e6d9;padding:56px 0 24px}
        .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px;padding-bottom:40px}
        .footer-brand p{color:#aaa99e;max-width:280px;font-size:13px}
        .footer-title{font-weight:800;margin-bottom:16px;color:#fff}
        .footer-links{list-style:none;padding:0;margin:0}
        .footer-links li{margin:8px 0;color:#aaa99e;font-size:13px}
        .footer-links a:hover{color:var(--yellow)}
        .copyright{border-top:1px solid rgba(255,255,255,.14);padding-top:20px;color:#929188;font-size:12px;display:flex;justify-content:space-between;gap:20px}
        @media(max-width:1024px){
            .hero-grid,.solution-layout,.signal-grid{grid-template-columns:1fr}
            .hero-art{max-width:680px}
            .cover-grid{grid-template-columns:repeat(3,1fr)}
            .channel-grid{grid-template-columns:repeat(2,1fr)}
            .popular-grid{grid-template-columns:1fr}
        }
        @media(max-width:768px){
            .container{width:min(100% - 30px,var(--container))}
            .nav-wrap{height:68px}
            .menu-btn{display:block}
            .nav-links{display:none;position:absolute;left:15px;right:15px;top:76px;padding:10px 18px;background:var(--white);border:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}
            .nav-links.open{display:flex}
            .nav-links a{padding:12px 0;border-bottom:1px solid #eee8dc}
            .nav-links a:last-child{border:0}
            .nav-links a.active:after{display:none}
            .nav-cta{text-align:center;margin:8px 0!important}
            section{padding:60px 0}
            .hero{padding-top:45px}
            h1{font-size:42px}
            .section-head{display:block;margin-bottom:25px}
            .section-head p{margin-top:10px}
            .pain-grid,.steps,.quote-grid,.scene-grid,.news-grid,.faq-grid,.rank-columns,.guide-layout,.topic-strip{grid-template-columns:1fr}
            .step{border-right:0;border-bottom:1px solid var(--line);margin:0;padding:19px 0}
            .step:last-child{border-bottom:0}
            .cover-grid{grid-template-columns:repeat(2,1fr);gap:16px}
            .hero-art,.hero-art img{min-height:270px;height:270px}
            .hero-note{right:10px;bottom:12px}
            .footer-grid{grid-template-columns:1fr 1fr}
            .copyright{display:block}
            .copyright span{display:block;margin-top:7px}
        }
        @media(max-width:520px){
            .brand-text{font-size:17px}
            h1{font-size:36px}
            h2{font-size:28px}
            .hero-sub{font-size:17px}
            .hero-copy{font-size:15px}
            .actions .btn{width:100%}
            .solution-row{grid-template-columns:1fr;gap:5px}
            .channel-grid{grid-template-columns:1fr 1fr}
            .footer-grid{grid-template-columns:1fr 1fr;gap:25px 18px}
        }

/* roulang page: category1 */
:root{
 --ink:#26251f;--muted:#77756c;--paper:#fbf8f0;--cream:#f3eddf;
 --orange:#e66b3d;--orange-deep:#b84b2a;--yellow:#f2bf58;--green:#587d61;
 --line:#ded7c8;--white:#fffdf8;--shadow:0 16px 42px rgba(68,48,25,.10);
 --radius:16px;--container:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7;font-size:15px}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input,select{font:inherit}
button{cursor:pointer}
.container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(251,248,240,.95);border-bottom:1px solid rgba(222,215,200,.8);backdrop-filter:blur(12px)}
.nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.2px;white-space:nowrap}
.brand-mark{width:37px;height:37px;display:grid;place-items:center;background:var(--orange);color:#fff;border-radius:11px;font-size:18px;box-shadow:4px 4px 0 var(--yellow)}
.brand-text{font-size:19px}
.nav-links{display:flex;align-items:center;gap:25px}
.nav-links a{font-size:14px;color:#68665d;position:relative;padding:26px 0}
.nav-links a:hover,.nav-links a.active{color:var(--orange-deep)}
.nav-links a.active:after{content:"";position:absolute;left:0;right:0;bottom:17px;height:2px;background:var(--orange)}
.nav-cta{padding:10px 16px!important;border:1px solid var(--orange);color:var(--orange-deep)!important;border-radius:9px}
.nav-cta:hover{background:var(--orange);color:#fff!important}
.menu-btn{display:none;border:0;background:transparent;color:var(--ink);font-size:24px;width:42px;height:42px}
section{padding:72px 0;scroll-margin-top:76px}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:30px}
.eyebrow{color:var(--orange-deep);font-size:12px;font-weight:800;letter-spacing:1.5px;margin-bottom:9px}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(34px,5vw,58px);line-height:1.15;margin-bottom:18px;letter-spacing:0}
h2{font-size:clamp(25px,3vw,36px);line-height:1.25;margin-bottom:10px}
h3{font-size:19px;line-height:1.4;margin:12px 0 6px}
.section-head p,.intro-copy{max-width:600px;color:var(--muted);margin-bottom:2px}
.page-intro{padding:55px 0 48px;background:var(--cream);border-bottom:1px solid var(--line)}
.intro-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:55px;align-items:center}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:24px}
.breadcrumb a{color:var(--orange-deep)}
.intro-copy{font-size:16px;line-height:1.9}
.intro-stamp{background:var(--white);border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:var(--shadow);position:relative}
.intro-stamp:before{content:"";display:block;width:54px;height:5px;background:var(--orange);border-radius:8px;margin-bottom:22px}
.stamp-row{display:flex;justify-content:space-between;gap:20px;padding:13px 0;border-bottom:1px solid var(--line)}
.stamp-row:last-child{border-bottom:0}
.stamp-row span{color:var(--muted);font-size:13px}
.stamp-row strong{color:var(--orange-deep)}
.filter-band{background:var(--white);border-bottom:1px solid var(--line);padding:28px 0}
.filter-row{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.filter-label{font-weight:800}
.filter-tags{display:flex;gap:9px;flex-wrap:wrap}
.filter-tag{border:1px solid var(--line);background:var(--paper);color:var(--muted);padding:8px 14px;border-radius:30px;font-size:13px}
.filter-tag.active,.filter-tag:hover{background:var(--orange);border-color:var(--orange);color:#fff}
.sort-select{border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:8px;padding:9px 13px;outline:0}
.sort-select:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(230,107,61,.15)}
.series-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.series-card{background:var(--white);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.25s ease}
.series-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d2bda5}
.series-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:#e8dfd0}
.series-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.series-card:hover .series-cover img{transform:scale(1.05)}
.badge{position:absolute;top:12px;left:12px;background:var(--white);color:var(--orange-deep);border-radius:5px;padding:3px 9px;font-size:11px;font-weight:800}
.series-body{padding:17px 18px 18px}
.series-body p{font-size:13px;color:var(--muted);margin:5px 0 14px;min-height:44px}
.meta{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px}
.rating{color:var(--orange-deep);font-weight:800}
.more-line{margin-top:30px;text-align:center}
.text-link{color:var(--orange-deep);font-weight:800;border-bottom:1px solid var(--orange);padding-bottom:3px}
.feature-strip{background:#343b32;color:#fffdf8}
.feature-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:stretch}
.feature-image{min-height:310px;border-radius:15px;overflow:hidden}
.feature-image img{width:100%;height:100%;object-fit:cover}
.feature-copy{padding:12px 0}
.feature-copy p{color:#d8d4c8;line-height:1.9}
.feature-list{list-style:none;padding:0;margin:22px 0 0}
.feature-list li{border-top:1px solid rgba(255,255,255,.18);padding:13px 0;color:#ebe5d8}
.feature-list span{color:var(--yellow);font-weight:800;margin-right:12px}
.guide-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:55px}
.guide-layout>div:first-child{border-right:1px solid var(--line);padding-right:45px}
.guide-list{list-style:none;padding:0;margin:0}
.guide-list li{display:flex;gap:17px;padding:16px 0;border-bottom:1px solid var(--line)}
.guide-list b{color:var(--orange);min-width:25px}
.guide-list span{color:var(--muted)}
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.topic-card{padding:23px;background:var(--cream);border-left:4px solid var(--orange)}
.topic-card p{color:var(--muted);font-size:14px;margin-bottom:0}
.timeline{border-left:2px solid var(--yellow);padding-left:28px}
.timeline-item{position:relative;padding:0 0 25px}
.timeline-item:before{content:"";position:absolute;width:10px;height:10px;border-radius:50%;background:var(--orange);left:-34px;top:8px}
.timeline-item time{font-size:12px;color:var(--orange-deep);font-weight:800}
.timeline-item p{color:var(--muted);margin:4px 0 0}
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
details{background:var(--white);border:1px solid var(--line);border-radius:10px;padding:16px 18px}
summary{cursor:pointer;font-weight:750;list-style:none}
summary::-webkit-details-marker{display:none}
summary:after{content:"＋";float:right;color:var(--orange)}
details[open] summary:after{content:"−"}
details p{color:var(--muted);font-size:14px;margin:12px 0 0;padding-top:12px;border-top:1px solid var(--line)}
.cta{background:var(--orange);color:#fff;padding:50px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}
.cta h2{margin-bottom:7px}
.cta p{margin:0;color:#ffe9df}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid transparent;padding:12px 20px;border-radius:9px;font-weight:750;transition:.2s ease;min-height:46px}
.btn-light{background:#fff;color:var(--orange-deep)}
.btn-light:hover{background:#fff3e9;transform:translateY(-2px)}
.btn:focus-visible,.nav-links a:focus-visible,.menu-btn:focus-visible,summary:focus-visible{outline:3px solid rgba(230,107,61,.35);outline-offset:3px}
.site-footer{background:#292c27;color:#eee9dc;padding:55px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:38px}
.footer-brand .brand{color:#fff}
.footer-brand p{color:#aaa99e;max-width:285px;font-size:13px;margin-top:18px}
.footer-title{font-weight:800;margin-bottom:13px}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin:8px 0}
.footer-links a{color:#aaa99e;font-size:13px}
.footer-links a:hover{color:var(--yellow)}
.copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:18px;color:#898980;font-size:12px}
@media(max-width:1024px){
 .nav-links{gap:15px}.nav-links a{font-size:13px}
 .intro-layout,.feature-grid{gap:30px}
 .series-grid{grid-template-columns:repeat(3,1fr);gap:16px}
 .footer-grid{grid-template-columns:1.4fr repeat(3,1fr);gap:22px}
}
@media(max-width:768px){
 .container{width:min(var(--container),calc(100% - 30px))}
 .nav-wrap{height:68px}.menu-btn{display:block}
 .nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 20px 20px;flex-direction:column;align-items:stretch;gap:0;box-shadow:var(--shadow)}
 .nav-links.open{display:flex}.nav-links a{padding:12px 0}.nav-links a.active:after{bottom:6px}.nav-cta{text-align:center;margin-top:8px}
 section{padding:55px 0}.page-intro{padding:38px 0}.intro-layout,.feature-grid,.guide-layout{grid-template-columns:1fr}
 .intro-stamp{margin-top:10px}.guide-layout>div:first-child{border-right:0;border-bottom:1px solid var(--line);padding:0 0 28px}
 .series-grid{grid-template-columns:repeat(2,1fr);gap:14px}.series-body{padding:13px}.series-body p{min-height:0}
 .topic-grid{grid-template-columns:1fr 1fr}.faq-grid{grid-template-columns:1fr}
 .cta-inner{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}
 .copyright{flex-direction:column;gap:5px}
}
@media(max-width:520px){
 h1{font-size:35px}.section-head{display:block}.section-head p{margin-top:10px}
 .series-grid{grid-template-columns:1fr 1fr}.series-cover{aspect-ratio:1/1}
 .topic-grid{grid-template-columns:1fr}.filter-row{align-items:flex-start;flex-direction:column}
 .footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}
 .brand-text{font-size:17px}
}