/* roulang page: index */
:root{
      --ink:#18251f;
      --muted:#68776f;
      --cream:#f5f7f1;
      --paper:#ffffff;
      --line:#dce5dc;
      --green:#176b4c;
      --green-dark:#0c3e2d;
      --mint:#dff2e5;
      --lime:#d9ed8b;
      --gold:#e7b965;
      --shadow:0 20px 60px rgba(24,55,40,.10);
      --radius:24px;
      --container:1180px;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;background:var(--cream);color:var(--ink);line-height:1.75;-webkit-font-smoothing:antialiased}
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .topbar{height:76px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(220,229,220,.8);position:relative;z-index:10}
    .logo{display:flex;align-items:center;gap:11px;font-size:20px;font-weight:800;letter-spacing:-.03em}
    .logo-mark{width:34px;height:34px;border-radius:11px;background:var(--green);display:grid;place-items:center;color:#fff;font-size:15px;box-shadow:0 7px 16px rgba(23,107,76,.24)}
    .nav-wrap{display:flex;align-items:center;gap:28px}
    .nav-link{font-size:14px;color:var(--muted);padding:8px 2px;transition:.25s ease;position:relative}
    .nav-link:hover,.nav-link.active{color:var(--green-dark)}
    .nav-link.active:after{content:"";height:3px;width:22px;border-radius:5px;background:var(--gold);position:absolute;bottom:-8px;left:50%;transform:translateX(-50%)}
    .nav-status{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-left:18px}
    .status-dot{width:8px;height:8px;border-radius:50%;background:#65b77c;box-shadow:0 0 0 5px rgba(101,183,124,.15)}
    .nav-action{background:var(--green);color:#fff;padding:11px 18px;border-radius:12px;font-weight:700;font-size:13px;transition:.25s}
    .nav-action:hover{background:var(--green-dark);transform:translateY(-2px)}
    .hero{padding:78px 0 82px;position:relative;overflow:hidden}
    .hero:before{content:"";position:absolute;width:570px;height:570px;border-radius:50%;background:rgba(217,237,139,.38);filter:blur(8px);right:-160px;top:-170px;z-index:-1}
    .hero:after{content:"";position:absolute;width:280px;height:280px;border-radius:50%;background:rgba(185,224,203,.5);filter:blur(18px);left:-110px;bottom:-140px;z-index:-1}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green);font-size:13px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}
    .eyebrow:before{content:"";width:27px;height:2px;background:var(--gold)}
    h1{font-size:clamp(42px,6vw,78px);line-height:1.08;letter-spacing:-.06em;max-width:830px;margin:22px 0 24px;color:var(--green-dark)}
    .hero-lead{font-size:18px;color:var(--muted);max-width:720px;line-height:1.9}
    .hero-actions{display:flex;align-items:center;gap:14px;margin-top:31px;flex-wrap:wrap}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:14px 21px;border-radius:13px;font-size:14px;font-weight:800;border:1px solid transparent;transition:.25s ease}
    .btn-primary{background:var(--green);color:#fff;box-shadow:0 10px 22px rgba(23,107,76,.18)}
    .btn-primary:hover{background:var(--green-dark);transform:translateY(-2px)}
    .btn-soft{background:rgba(255,255,255,.72);border-color:var(--line);color:var(--green-dark)}
    .btn-soft:hover{border-color:var(--green);background:#fff}
    .hero-panel{margin-top:58px;display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:14px}
    .hero-tile{min-height:145px;border:1px solid rgba(220,229,220,.9);border-radius:var(--radius);padding:24px;background:rgba(255,255,255,.64);box-shadow:0 12px 35px rgba(24,55,40,.05)}
    .hero-tile.feature{background:var(--green-dark);color:#fff;display:flex;flex-direction:column;justify-content:space-between}
    .hero-tile h3{font-size:21px;line-height:1.35;margin:10px 0 7px}
    .hero-tile p{font-size:13px;color:var(--muted)}
    .hero-tile.feature p{color:#c3d6ca}
    .tile-label{font-size:12px;color:var(--green);font-weight:800}
    .feature .tile-label{color:var(--lime)}
    .section{padding:92px 0}
    .section.alt{background:#edf3ec}
    .section.dark{background:var(--green-dark);color:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:38px}
    .section-kicker{font-size:12px;color:var(--green);font-weight:800;letter-spacing:.12em;text-transform:uppercase;margin-bottom:10px}
    .dark .section-kicker{color:var(--lime)}
    h2{font-size:clamp(28px,4vw,45px);line-height:1.2;letter-spacing:-.04em;color:var(--green-dark)}
    .dark h2{color:#fff}
    .section-intro{max-width:590px;color:var(--muted);font-size:15px}
    .dark .section-intro{color:#b8ccc0}
    .coverage{display:grid;grid-template-columns:1fr 1.5fr;gap:60px;align-items:center}
    .coverage-copy p{color:var(--muted);font-size:16px;margin-top:20px}
    .orbit{height:330px;border:1px solid var(--line);border-radius:50%;position:relative;background:radial-gradient(circle,#fff 0 19%,transparent 20%),linear-gradient(140deg,#f9fcf6,#dcefe0);box-shadow:var(--shadow)}
    .orbit:before,.orbit:after{content:"";position:absolute;border:1px solid rgba(23,107,76,.22);border-radius:50%;inset:13%;transform:rotate(25deg)}
    .orbit:after{inset:27%;transform:rotate(-28deg)}
    .orbit-core{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:105px;height:105px;border-radius:50%;background:var(--green);color:#fff;display:grid;place-items:center;text-align:center;font-weight:800;line-height:1.35;box-shadow:0 13px 26px rgba(23,107,76,.25)}
    .orbit-tag{position:absolute;padding:8px 13px;background:#fff;border:1px solid var(--line);border-radius:12px;font-size:12px;font-weight:700;box-shadow:0 7px 17px rgba(24,55,40,.08)}
    .orbit-tag.one{top:25px;left:19%}.orbit-tag.two{right:13%;top:73px}.orbit-tag.three{bottom:31px;left:17%}.orbit-tag.four{right:18%;bottom:28px}
    .scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .scene-card{padding:25px;border-radius:20px;background:#fff;border:1px solid var(--line);min-height:200px;transition:.25s}
    .scene-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#b6d1bd}
    .icon-box{width:42px;height:42px;border-radius:13px;background:var(--mint);color:var(--green);display:grid;place-items:center;font-weight:900;margin-bottom:26px}
    .scene-card h3{font-size:18px;margin-bottom:9px;color:var(--green-dark)}
    .scene-card p{font-size:13px;color:var(--muted)}
    .local-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .local-card{padding:28px;border-top:3px solid var(--gold);background:#fff;border-radius:0 0 20px 20px}
    .local-card strong{display:block;font-size:34px;color:var(--green-dark);margin-bottom:8px}
    .local-card p{font-size:14px;color:var(--muted)}
    .method{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:start}
    .method-list{border-left:1px solid #a7c4b0}
    .method-item{position:relative;padding:0 0 30px 32px}
    .method-item:last-child{padding-bottom:0}
    .method-item:before{content:"";position:absolute;width:13px;height:13px;border:3px solid var(--green);background:var(--cream);border-radius:50%;left:-7px;top:6px}
    .method-item b{display:block;color:var(--green-dark);font-size:17px;margin-bottom:6px}
    .method-item p{font-size:14px;color:var(--muted)}
    .compat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
    .compat-card{padding:22px;border:1px solid rgba(255,255,255,.14);border-radius:17px;background:rgba(255,255,255,.06)}
    .compat-card span{display:block;color:var(--lime);font-size:12px;font-weight:800;margin-bottom:12px}
    .compat-card h3{font-size:18px;margin-bottom:8px}.compat-card p{color:#b8ccc0;font-size:13px}
    .case-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
    .case-main,.case-side{background:#fff;border:1px solid var(--line);border-radius:22px;padding:30px}
    .case-main{background:linear-gradient(135deg,#fff,#e6f3e6)}
    .quote{font-size:25px;line-height:1.5;color:var(--green-dark);margin:30px 0}
    .case-meta{display:flex;gap:12px;align-items:center;color:var(--muted);font-size:13px}
    .avatar{width:38px;height:38px;border-radius:50%;background:var(--gold);display:grid;place-items:center;color:#fff;font-weight:800}
    .case-side h3{font-size:21px;color:var(--green-dark);margin-bottom:20px}
    .proof-list{list-style:none}.proof-list li{padding:14px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}.proof-list li:last-child{border-bottom:0}
    .proof-list b{color:var(--green-dark);margin-right:8px}
    .content-layout{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .content-card{padding:26px;background:#fff;border:1px solid var(--line);border-radius:20px}
    .content-card .date{font-size:12px;color:var(--green);font-weight:800}
    .content-card h3{font-size:20px;color:var(--green-dark);margin:14px 0 9px}
    .content-card p{font-size:14px;color:var(--muted)}
    .content-card a{display:inline-block;margin-top:18px;color:var(--green);font-size:13px;font-weight:800}
    .metric-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#c7d8c9;border:1px solid #c7d8c9;border-radius:20px;overflow:hidden}
    .metric{background:#fff;padding:28px 22px}.metric strong{display:block;font-size:34px;color:var(--green-dark);letter-spacing:-.05em}.metric span{font-size:13px;color:var(--muted)}
    .contact{padding:82px 0;background:#dff0df}
    .contact-box{display:flex;justify-content:space-between;align-items:center;gap:30px;background:var(--green-dark);border-radius:28px;padding:42px 48px;color:#fff}
    .contact-box h2{color:#fff;font-size:36px}.contact-box p{color:#bdd0c2;max-width:600px;margin-top:12px;font-size:14px}
    .contact-box .btn-primary{background:var(--lime);color:var(--green-dark);box-shadow:none}.contact-box .btn-primary:hover{background:#edf9b8}
    footer{background:#102d22;color:#b8ccc0;padding:52px 0 25px}
    .footer-main{display:flex;justify-content:space-between;gap:50px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.13)}
    .footer-brand{max-width:330px}.footer-brand .logo{color:#fff;margin-bottom:15px}.footer-brand p{font-size:13px;line-height:1.8}
    .footer-links{display:flex;gap:70px}.footer-links h4{color:#fff;font-size:14px;margin-bottom:14px}.footer-links a{display:block;font-size:13px;margin:8px 0;transition:.2s}.footer-links a:hover{color:var(--lime)}
    .copyright{display:flex;justify-content:space-between;gap:20px;padding-top:22px;font-size:12px;color:#88a394}
    :focus-visible{outline:3px solid rgba(231,185,101,.8);outline-offset:3px}
    @media(max-width:900px){.hero-panel,.coverage,.method,.case-grid{grid-template-columns:1fr 1fr}.hero-panel .feature{grid-column:span 2}.scene-grid{grid-template-columns:repeat(2,1fr)}.local-grid,.compat-grid{grid-template-columns:1fr 1fr}.metric-strip{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:680px){.container{width:min(100% - 28px,var(--container))}.topbar{height:68px}.nav-wrap{gap:12px}.nav-status{display:none}.nav-link{font-size:12px}.nav-action{padding:9px 11px;font-size:12px}.logo{font-size:16px}.logo-mark{width:30px;height:30px}.hero{padding:58px 0}.hero-lead{font-size:16px}.hero-panel,.coverage,.method,.case-grid,.content-layout{grid-template-columns:1fr}.hero-panel .feature{grid-column:auto}.section{padding:66px 0}.section-head{display:block;margin-bottom:28px}.section-intro{margin-top:15px}.scene-grid,.local-grid,.compat-grid{grid-template-columns:1fr}.orbit{height:280px;margin-top:15px}.contact-box{display:block;padding:30px 24px}.contact-box h2{font-size:29px}.contact-box .btn{margin-top:24px}.footer-main,.copyright{display:block}.footer-links{gap:35px;margin-top:30px}.copyright span{display:block;margin-top:8px}}

/* roulang page: category1 */
:root{
            --ink:#18251f;
            --muted:#68776f;
            --cream:#f5f7f1;
            --paper:#ffffff;
            --line:#dce5dc;
            --green:#176b4c;
            --green-dark:#0c3e2d;
            --mint:#dff2e5;
            --lime:#d9ed8b;
            --gold:#e7b965;
            --shadow:0 20px 60px rgba(24,55,40,.10);
            --radius:24px;
            --container:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;background:var(--cream);color:var(--ink);line-height:1.75;-webkit-font-smoothing:antialiased}
        a{color:inherit;text-decoration:none}
        button,input{font:inherit}
        button{cursor:pointer}
        img{max-width:100%;display:block}
        .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
        .topbar{height:76px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(220,229,220,.8);position:relative;z-index:10}
        .logo{display:flex;align-items:center;gap:11px;font-size:20px;font-weight:800;letter-spacing:-.03em}
        .logo-mark{width:34px;height:34px;border-radius:11px;background:var(--green);display:grid;place-items:center;color:#fff;font-size:15px;box-shadow:0 7px 16px rgba(23,107,76,.24)}
        .nav-wrap{display:flex;align-items:center;gap:28px}
        .nav-link{font-size:14px;color:var(--muted);padding:8px 2px;transition:.25s ease;position:relative}
        .nav-link:hover,.nav-link.active{color:var(--green-dark)}
        .nav-link.active:after{content:"";height:3px;width:22px;border-radius:5px;background:var(--gold);position:absolute;bottom:-8px;left:50%;transform:translateX(-50%)}
        .nav-status{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-left:18px}
        .status-dot{width:8px;height:8px;border-radius:50%;background:#49a66d;box-shadow:0 0 0 4px rgba(73,166,109,.14)}
        .nav-action{background:var(--green);color:#fff;padding:11px 18px;border-radius:12px;font-weight:700;font-size:13px;transition:.25s}
        .nav-action:hover{background:var(--green-dark);transform:translateY(-2px)}
        .hero{padding:68px 0 70px;position:relative;overflow:hidden}
        .hero:before{content:"";position:absolute;width:530px;height:530px;border-radius:50%;background:rgba(217,237,139,.32);filter:blur(7px);right:-150px;top:-190px;z-index:-1}
        .hero-layout{display:grid;grid-template-columns:1.08fr .92fr;gap:64px;align-items:center}
        .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green);font-size:13px;font-weight:800;letter-spacing:.1em}
        .eyebrow:before{content:"";width:27px;height:2px;background:var(--gold)}
        h1,h2,h3,p{margin-top:0}
        h1{font-size:clamp(38px,5vw,66px);line-height:1.16;letter-spacing:-.04em;margin:18px 0 22px;color:var(--green-dark)}
        .hero-lead{font-size:18px;color:var(--muted);max-width:640px;line-height:1.9}
        .hero-actions{display:flex;align-items:center;gap:14px;margin-top:30px;flex-wrap:wrap}
        .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:14px 21px;border-radius:13px;font-size:14px;font-weight:800;border:1px solid transparent;transition:.25s ease}
        .btn-primary{background:var(--green);color:#fff;box-shadow:0 10px 22px rgba(23,107,76,.18)}
        .btn-primary:hover{background:var(--green-dark);transform:translateY(-2px)}
        .btn-soft{background:rgba(255,255,255,.72);border-color:var(--line);color:var(--green-dark)}
        .btn-soft:hover{border-color:var(--green);background:#fff}
        .map-panel{min-height:380px;border-radius:28px;background:#e6efe5;border:1px solid #cbdccf;position:relative;overflow:hidden;padding:24px;box-shadow:var(--shadow)}
        .map-panel:before{content:"";position:absolute;inset:0;background-image:linear-gradient(28deg,transparent 47%,rgba(23,107,76,.12) 48%,transparent 49%),linear-gradient(112deg,transparent 48%,rgba(23,107,76,.10) 49%,transparent 50%);background-size:120px 120px,165px 165px;opacity:.65}
        .map-panel:after{content:"";position:absolute;width:190px;height:190px;border:1px solid rgba(23,107,76,.15);border-radius:50%;left:28%;top:24%;box-shadow:0 0 0 28px rgba(23,107,76,.06),0 0 0 58px rgba(23,107,76,.04)}
        .map-caption{position:relative;z-index:2;display:flex;justify-content:space-between;align-items:center}
        .map-label{background:#fff;padding:9px 13px;border-radius:12px;font-size:12px;font-weight:800;color:var(--green-dark);box-shadow:0 7px 17px rgba(24,55,40,.08)}
        .map-note{font-size:12px;color:var(--muted)}
        .map-pin{position:absolute;z-index:3;left:48%;top:42%;width:22px;height:22px;border-radius:50% 50% 50% 0;background:var(--green);transform:rotate(-45deg);box-shadow:0 7px 13px rgba(12,62,45,.24)}
        .map-pin:after{content:"";width:8px;height:8px;border-radius:50%;background:#fff;position:absolute;top:7px;left:7px}
        .map-route{position:absolute;z-index:2;width:250px;height:116px;border-top:2px dashed rgba(23,107,76,.5);border-radius:50%;left:22%;top:48%;transform:rotate(-18deg)}
        .nearby{position:absolute;z-index:4;bottom:20px;left:20px;right:20px;background:rgba(255,255,255,.88);border:1px solid rgba(255,255,255,.8);border-radius:17px;padding:17px 19px;display:flex;justify-content:space-between;align-items:center;gap:15px}
        .nearby strong{font-size:15px;color:var(--green-dark)}
        .nearby span{font-size:12px;color:var(--muted)}
        .section{padding:84px 0}
        .section.alt{background:#edf3ec}
        .section.dark{background:var(--green-dark);color:#fff}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:35px}
        .section-kicker{font-size:12px;color:var(--green);font-weight:800;letter-spacing:.12em;margin-bottom:10px}
        .dark .section-kicker{color:var(--lime)}
        .section h2{font-size:clamp(28px,3.5vw,42px);line-height:1.25;letter-spacing:-.03em;margin-bottom:12px;color:var(--green-dark)}
        .dark h2{color:#fff}
        .section-intro{max-width:590px;color:var(--muted);font-size:15px}
        .dark .section-intro{color:#b8ccc0}
        .keyword-strip{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
        .keyword{padding:8px 13px;border:1px solid var(--line);background:#fff;border-radius:10px;font-size:13px;color:var(--green-dark);font-weight:700}
        .topic-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:20px}
        .topic-feature{background:var(--green-dark);border-radius:22px;padding:31px;color:#fff;min-height:290px;display:flex;flex-direction:column;justify-content:space-between}
        .topic-feature h3{font-size:25px;line-height:1.35;margin:16px 0 10px}
        .topic-feature p{color:#c3d6ca;font-size:14px}
        .topic-feature .badge{color:var(--lime)}
        .topic-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
        .topic-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:23px;transition:.25s}
        .topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#b6d1bd}
        .topic-card h3{font-size:18px;color:var(--green-dark);margin:12px 0 7px}
        .topic-card p{font-size:13px;color:var(--muted);margin-bottom:0}
        .badge{font-size:11px;letter-spacing:.08em;text-transform:uppercase;font-weight:800;color:var(--green)}
        .device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
        .device-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:25px}
        .device-icon{width:40px;height:40px;border-radius:13px;background:var(--mint);display:grid;place-items:center;color:var(--green-dark);font-weight:900;margin-bottom:18px}
        .device-card h3{font-size:18px;color:var(--green-dark);margin-bottom:8px}
        .device-card p{font-size:13px;color:var(--muted);margin-bottom:0}
        .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid rgba(255,255,255,.25)}
        .timeline-item{padding:27px 23px 5px;border-right:1px solid rgba(255,255,255,.16);position:relative}
        .timeline-item:last-child{border-right:0}
        .timeline-item:before{content:"";position:absolute;width:11px;height:11px;border-radius:50%;background:var(--lime);top:-6px;left:23px;box-shadow:0 0 0 5px rgba(217,237,139,.13)}
        .timeline-item b{display:block;color:var(--lime);font-size:13px;margin-bottom:12px}
        .timeline-item h3{font-size:18px;margin-bottom:8px}
        .timeline-item p{font-size:13px;color:#b8ccc0;margin-bottom:0}
        .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
        details{background:#fff;border:1px solid var(--line);border-radius:17px;padding:18px 21px}
        details[open]{border-color:#b6d1bd;box-shadow:0 10px 25px rgba(24,55,40,.06)}
        summary{cursor:pointer;font-weight:800;color:var(--green-dark);list-style:none;display:flex;justify-content:space-between;gap:20px}
        summary::-webkit-details-marker{display:none}
        summary:after{content:"+";font-size:20px;color:var(--green)}
        details[open] summary:after{content:"−"}
        details p{font-size:14px;color:var(--muted);margin:13px 0 2px}
        .cta-band{padding:60px 0}
        .cta-box{background:var(--lime);border-radius:24px;padding:35px 40px;display:flex;justify-content:space-between;align-items:center;gap:25px}
        .cta-box h2{font-size:30px;line-height:1.3;color:var(--green-dark);margin-bottom:8px}
        .cta-box p{margin-bottom:0;color:#4e674f;font-size:14px}
        footer{background:#0a3023;color:#fff;padding:48px 0 22px}
        .footer-main{display:flex;justify-content:space-between;gap:60px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.14)}
        .footer-brand{max-width:370px}
        .footer-brand .logo{margin-bottom:16px}
        .footer-brand p{color:#b8ccc0;font-size:13px}
        .footer-links{display:flex;gap:82px}
        .footer-links h4{font-size:13px;color:var(--lime);margin:4px 0 14px}
        .footer-links a{display:block;color:#c3d6ca;font-size:13px;margin:8px 0;transition:.2s}
        .footer-links a:hover{color:#fff}
        .copyright{display:flex;justify-content:space-between;gap:20px;color:#8da99a;font-size:12px;padding-top:20px}
        a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--gold);outline-offset:3px}
        @media(max-width:900px){
            .hero-layout,.topic-layout{grid-template-columns:1fr}
            .hero{padding-top:50px}
            .map-panel{min-height:330px}
            .device-grid{grid-template-columns:repeat(2,1fr)}
            .timeline{grid-template-columns:repeat(2,1fr);border-top:0;gap:20px}
            .timeline-item{border:0;border-top:1px solid rgba(255,255,255,.25);padding-left:20px}
            .timeline-item:before{left:20px;top:-6px}
        }
        @media(max-width:680px){
            .container{width:min(var(--container),calc(100% - 28px))}
            .topbar{height:auto;min-height:72px;align-items:flex-start;padding:16px 0;gap:15px}
            .nav-wrap{gap:12px;flex-wrap:wrap;justify-content:flex-end}
            .nav-status{display:none}
            .nav-action{padding:9px 12px}
            .nav-link{font-size:13px}
            .hero{padding:48px 0 55px}
            h1{font-size:40px}
            .hero-lead{font-size:16px}
            .section{padding:62px 0}
            .section-head{display:block;margin-bottom:27px}
            .section-intro{margin-top:10px}
            .topic-list,.device-grid,.faq-grid{grid-template-columns:1fr}
            .timeline{grid-template-columns:1fr}
            .timeline-item{padding-bottom:8px}
            .cta-box{padding:28px 24px;display:block}
            .cta-box .btn{margin-top:20px}
            .footer-main{display:block}
            .footer-links{gap:50px;margin-top:28px}
            .copyright{display:block}
            .copyright span{display:block;margin-top:7px}
            .nearby{display:block}
            .nearby span{display:block;margin-top:4px}
        }