/* roulang page: index */
:root{
            --orange:#f47b20;
            --orange-deep:#d85c0e;
            --yellow:#ffc94d;
            --ink:#18221f;
            --green:#397765;
            --cream:#fbf8f1;
            --paper:#fffdf8;
            --muted:#69716c;
            --line:#e6e0d4;
            --shadow:0 18px 45px rgba(36,42,33,.09);
            --radius:18px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--cream);color:var(--ink);font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7}
        a{text-decoration:none;color:inherit}
        button,input{font:inherit}
        button{cursor:pointer}
        img{max-width:100%;display:block}
        .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
        .site-header{position:sticky;top:0;z-index:50;background:rgba(251,248,241,.94);backdrop-filter:blur(15px);border-bottom:1px solid rgba(230,224,212,.8)}
        .nav-shell{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
        .brand{display:flex;align-items:center;gap:11px;font-weight:900;letter-spacing:-.04em;white-space:nowrap}
        .brand-mark{width:35px;height:35px;background:var(--orange);color:#fff;border-radius:10px 17px 10px 17px;display:grid;place-items:center;font-size:18px;box-shadow:4px 4px 0 var(--yellow)}
        .brand-text{font-size:15px}
        .nav-links{display:flex;align-items:center;gap:25px;color:#535b55;font-size:14px}
        .nav-links a{position:relative;padding:8px 0;transition:.25s}
        .nav-links a:after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--orange);transition:.25s}
        .nav-links a:hover,.nav-links a.active{color:var(--ink)}
        .nav-links a:hover:after,.nav-links a.active:after{right:0}
        .nav-entry,.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border:0;transition:.25s;font-weight:800}
        .nav-entry{background:var(--ink);color:#fff;padding:11px 17px;border-radius:9px;font-size:13px}
        .nav-entry:hover{background:var(--orange);transform:translateY(-2px)}
        .menu-toggle{display:none;background:none;border:0;font-size:28px;line-height:1;color:var(--ink);min-width:44px;min-height:44px}
        .hero{position:relative;min-height:690px;display:flex;align-items:center;overflow:hidden;background:var(--ink) url('/assets/images/1c212e4ffeff29d7.jpg') center/cover}
        .hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(24,34,31,.96) 0%,rgba(24,34,31,.82) 48%,rgba(24,34,31,.27) 100%)}
        .hero:after{content:"";position:absolute;width:520px;height:520px;border:1px solid rgba(255,201,77,.38);border-radius:50%;right:-160px;top:-80px;box-shadow:0 0 0 55px rgba(255,201,77,.05),0 0 0 110px rgba(255,201,77,.035)}
        .hero-content{position:relative;z-index:1;padding:90px 0;width:100%}
        .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--orange);font-size:12px;font-weight:900;letter-spacing:.14em;text-transform:uppercase}
        .eyebrow:before,.section-kicker:before{content:"";width:22px;height:2px;background:currentColor}
        .hero h1{color:#fff;font-size:clamp(38px,5.5vw,72px);line-height:1.1;letter-spacing:-.065em;max-width:760px;margin:22px 0}
        .hero-copy{color:#e9ece5;max-width:690px;font-size:17px;line-height:1.9;margin-bottom:30px}
        .hero-actions{display:flex;flex-wrap:wrap;gap:13px}
        .btn{padding:14px 22px;border-radius:10px;font-size:14px}
        .btn-primary{background:var(--orange);color:white;box-shadow:0 8px 20px rgba(244,123,32,.25)}
        .btn-primary:hover{background:var(--orange-deep);transform:translateY(-2px)}
        .btn-secondary{border:1px solid rgba(255,255,255,.35);color:#fff;background:rgba(255,255,255,.08)}
        .btn-secondary:hover{background:#fff;color:var(--ink)}
        .btn:focus,.nav-entry:focus,.menu-toggle:focus,summary:focus{outline:3px solid rgba(255,201,77,.75);outline-offset:3px}
        .hero-board{margin-top:56px;display:flex;flex-wrap:wrap;gap:10px}
        .hero-stat{min-width:145px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);padding:13px 15px;color:#fff}
        .hero-stat strong{display:block;color:var(--yellow);font-size:21px;line-height:1.2}
        .hero-stat span{font-size:12px;color:#d5ddd5}
        section{padding:100px 0}
        .section-head{max-width:700px;margin-bottom:42px}
        .section-head h2{font-size:clamp(28px,3.5vw,44px);line-height:1.18;letter-spacing:-.05em;margin:13px 0 15px}
        .section-head p{color:var(--muted);margin:0;font-size:16px}
        .section-head.light h2,.section-head.light p{color:#fff}.section-head.light p{color:#cdd8cf}
        .section-alt{background:#f3eee4}
        .issue-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:55px;align-items:center}
        .issue-photo{min-height:410px;background:url('/assets/images/958b712679696061.jpg') center/cover;border-radius:16px;position:relative;overflow:hidden}
        .issue-photo:after{content:"";position:absolute;inset:0;background:linear-gradient(145deg,transparent 45%,rgba(24,34,31,.6))}
        .issue-note{position:absolute;z-index:1;bottom:24px;left:24px;background:var(--yellow);padding:14px 18px;font-weight:900;max-width:260px}
        .issue-list{display:grid;gap:14px}
        .issue-item{display:flex;gap:16px;align-items:flex-start;padding:17px 0;border-bottom:1px solid var(--line)}
        .issue-item b{color:var(--orange);font-size:18px}.issue-item h3{font-size:17px;margin:0 0 4px}.issue-item p{color:var(--muted);font-size:14px;margin:0}
        .overview-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:18px}
        .overview-main{background:var(--ink);color:#fff;padding:34px;min-height:275px;border-radius:var(--radius);position:relative;overflow:hidden}
        .overview-main:after{content:"01";position:absolute;right:25px;bottom:-25px;font-size:150px;font-weight:900;color:rgba(255,201,77,.12)}
        .overview-main h3{font-size:26px;margin:12px 0}.overview-main p{color:#cfd9d0;max-width:540px}
        .overview-side{display:grid;gap:18px}.mini-panel{background:var(--paper);border:1px solid var(--line);padding:24px;border-radius:12px}.mini-panel h3{font-size:18px;margin:0 0 7px}.mini-panel p{color:var(--muted);font-size:14px;margin:0}
        .feature-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:45px;align-items:start}.feature-intro{position:sticky;top:110px}.feature-intro p{color:var(--muted)}
        .feature-stack{display:grid;gap:12px}.feature-card{display:grid;grid-template-columns:80px 1fr auto;gap:20px;align-items:center;border-top:1px solid var(--line);padding:24px 0}.feature-num{font-size:36px;font-weight:900;color:var(--orange)}.feature-card h3{margin:0 0 4px;font-size:20px}.feature-card p{margin:0;color:var(--muted);font-size:14px}.arrow{font-size:22px;color:var(--orange)}
        .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}.steps:before{content:"";height:2px;background:var(--orange);position:absolute;top:27px;left:5%;right:5%}.step{position:relative;padding:0 18px}.step-dot{width:55px;height:55px;border-radius:50%;background:var(--paper);border:2px solid var(--orange);display:grid;place-items:center;color:var(--orange);font-size:18px;font-weight:900;position:relative;margin-bottom:23px}.step h3{font-size:17px;margin:0 0 7px}.step p{font-size:14px;color:var(--muted);margin:0}
        .update-section{background:var(--ink);color:#fff}.update-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:50px}.version-card{border:1px solid rgba(255,255,255,.18);padding:27px;background:rgba(255,255,255,.06);border-radius:13px}.version-label{color:var(--yellow);font-size:12px;font-weight:900;letter-spacing:.12em}.version-card h3{font-size:29px;margin:13px 0}.version-card p{color:#cbd5cc;font-size:14px}.update-list{border-top:1px solid rgba(255,255,255,.2)}.update-row{display:grid;grid-template-columns:130px 1fr auto;gap:20px;padding:20px 0;border-bottom:1px solid rgba(255,255,255,.15);align-items:center}.update-row time{color:var(--yellow);font-size:13px}.update-row strong{font-size:16px}.update-row span{color:#cbd5cc;font-size:13px}
        .result-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.result-card{background:var(--paper);border:1px solid var(--line);padding:26px 20px;min-height:170px}.result-card strong{font-size:35px;color:var(--orange);display:block}.result-card h3{font-size:17px;margin:12px 0 5px}.result-card p{font-size:13px;color:var(--muted);margin:0}
        .quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.quote{background:var(--yellow);padding:28px 25px;min-height:210px;position:relative}.quote:nth-child(2){background:var(--paper);border:1px solid var(--line);transform:translateY(18px)}.quote:nth-child(3){background:var(--green);color:#fff}.quote-mark{font-size:38px;line-height:1;color:var(--orange)}.quote p{font-size:16px;font-weight:700}.quote small{font-size:12px;opacity:.75}
        .audience-layout{display:grid;grid-template-columns:1fr 1fr;gap:20px}.audience-panel{padding:30px;background:var(--paper);border:1px solid var(--line)}.audience-panel h3{font-size:22px;margin:0 0 18px}.audience-list{display:grid;gap:12px}.audience-list li{list-style:none;padding:13px 15px;background:#f3eee4;border-left:3px solid var(--orange);font-size:14px}
        .scene-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:16px}.scene{min-height:255px;padding:25px;position:relative;overflow:hidden;background:var(--ink);color:#fff}.scene:first-child{background:linear-gradient(140deg,rgba(24,34,31,.75),rgba(24,34,31,.92)),url('/assets/images/5e6d9d7e5ed7ca09.jpg') center/cover}.scene:nth-child(2){background:var(--orange)}.scene:nth-child(3){background:var(--green)}.scene .scene-no{font-size:12px;color:var(--yellow);font-weight:900}.scene h3{font-size:22px;margin:30px 0 8px}.scene p{font-size:14px;color:#d8e0d8;margin:0}.scene:nth-child(2) p,.scene:nth-child(3) p{color:#fff}
        .news-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:50px}.news-image{min-height:330px;background:url('/assets/images/115efde8fdf2c50a.jpg') center/cover}.news-list{border-top:1px solid var(--line)}.news-item{display:grid;grid-template-columns:90px 1fr;gap:18px;padding:19px 0;border-bottom:1px solid var(--line)}.news-item time{font-size:12px;color:var(--orange);font-weight:800}.news-item h3{font-size:17px;margin:0 0 5px}.news-item p{font-size:13px;color:var(--muted);margin:0}
        .faq-wrap{max-width:850px;margin:auto}.faq-item{border-top:1px solid var(--line)}.faq-item:last-child{border-bottom:1px solid var(--line)}summary{list-style:none;cursor:pointer;padding:22px 5px;font-weight:800;display:flex;justify-content:space-between;gap:20px}summary::-webkit-details-marker{display:none}summary:after{content:"+";color:var(--orange);font-size:24px;font-weight:400}details[open] summary:after{content:"−"}.faq-answer{padding:0 35px 22px 5px;color:var(--muted);font-size:14px}
        .metric-section{background:#f3eee4}.metrics{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:15px}.metric-board{background:var(--ink);color:#fff;padding:30px}.metric-board strong{font-size:54px;color:var(--yellow);display:block;line-height:1}.metric-board p{color:#cdd7cf;margin:14px 0 0}.metric-small{background:var(--paper);padding:25px;border:1px solid var(--line)}.metric-small strong{display:block;font-size:31px;color:var(--orange)}.metric-small span{font-size:13px;color:var(--muted)}
        .access{background:var(--orange);color:#fff}.access-grid{display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center}.access h2{font-size:clamp(29px,4vw,48px);letter-spacing:-.05em;line-height:1.15;margin:12px 0}.access p{max-width:670px;color:#fff3e9}.access .btn-primary{background:var(--ink)}.access .btn-primary:hover{background:#000}.access .btn-secondary{border-color:#fff;color:#fff;background:transparent}
        .final-cta{background:var(--ink);color:#fff;text-align:center;padding:108px 0;position:relative;overflow:hidden}.final-cta:after{content:"";position:absolute;width:380px;height:380px;border:1px solid rgba(255,201,77,.3);border-radius:50%;left:-120px;bottom:-180px}.final-cta .section-head{margin:0 auto 28px}.final-cta p{color:#cbd4cc}.final-cta .hero-actions{justify-content:center}.final-note{font-size:12px;color:#9eaaa0;margin-top:22px}
        footer{background:#111816;color:#b9c4ba;padding:58px 0 25px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px}.footer-brand{color:#fff}.footer-brand p{font-size:13px;max-width:300px;color:#95a298}.footer-title{color:#fff;font-weight:800;font-size:14px;margin-bottom:14px}.footer-links{display:grid;gap:8px;font-size:13px}.footer-links a:hover{color:var(--yellow)}.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:42px;padding-top:20px;font-size:12px;color:#7f8b82;display:flex;justify-content:space-between;gap:15px}
        @media(max-width:1024px){.nav-links{gap:15px}.feature-layout,.issue-layout,.update-grid,.news-layout{gap:28px}.steps{grid-template-columns:repeat(2,1fr);gap:35px}.steps:before{display:none}.scene-grid{grid-template-columns:1fr 1fr}.scene:first-child{grid-column:span 2}.footer-grid{grid-template-columns:2fr 1fr 1fr}}
        @media(max-width:768px){.container{width:min(100% - 30px,600px)}.nav-links,.nav-entry{display:none}.menu-toggle{display:block}.nav-shell{height:68px}.hero{min-height:650px}.hero h1{font-size:43px}.hero-copy{font-size:15px}.issue-layout,.overview-grid,.feature-layout,.update-grid,.audience-layout,.news-layout,.access-grid{grid-template-columns:1fr}.feature-intro{position:static}.overview-side{grid-template-columns:1fr 1fr}.result-grid{grid-template-columns:1fr 1fr}.quotes{grid-template-columns:1fr}.quote:nth-child(2){transform:none}.metrics{grid-template-columns:1fr 1fr}.metric-board{grid-column:span 2}.footer-grid{grid-template-columns:1fr 1fr}.copyright{display:block}.copyright span{display:block;margin-top:8px}}
        @media(max-width:520px){section{padding:70px 0}.hero-content{padding:70px 0}.hero h1{font-size:36px}.hero-board{margin-top:38px}.hero-stat{min-width:calc(50% - 5px)}.overview-side,.steps,.result-grid,.scene-grid,.metrics,.footer-grid{grid-template-columns:1fr}.scene:first-child,.metric-board{grid-column:auto}.feature-card{grid-template-columns:48px 1fr auto;gap:12px}.feature-num{font-size:27px}.update-row{grid-template-columns:1fr;gap:5px}.news-item{grid-template-columns:1fr;gap:4px}.issue-photo{min-height:290px}.access .hero-actions{justify-content:flex-start}}
        @media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}

@media(max-width:768px){
    .nav-links.mobile-open{display:flex;position:absolute;top:68px;left:0;right:0;background:var(--cream);padding:18px 20px 24px;flex-direction:column;align-items:flex-start;gap:4px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
    .nav-links.mobile-open a{width:100%;padding:11px 0}
}