/* roulang page: index */
:root{
            --blue:#1769d2;
            --blue-dark:#0b3f8c;
            --blue-soft:#eaf3ff;
            --yellow:#e9b949;
            --ink:#172b4d;
            --muted:#66758c;
            --line:#dce6f2;
            --paper:#ffffff;
            --wash:#f5f8fc;
            --warm:#fffdf8;
            --radius:16px;
            --shadow:0 12px 32px rgba(28,67,116,.09);
            --shadow-hover:0 18px 38px rgba(28,67,116,.15);
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--wash);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.75;font-size:16px}
        a{color:var(--blue);text-decoration:none;transition:.25s ease}
        a:hover{color:var(--blue-dark)}
        img{max-width:100%;display:block}
        button,input,select,textarea{font:inherit}
        :focus-visible{outline:3px solid rgba(23,105,210,.3);outline-offset:3px}
        .container{max-width:1180px;margin:0 auto;padding:0 24px}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);box-shadow:0 3px 16px rgba(20,58,105,.05)}
        .topbar{min-height:76px;display:flex;align-items:center;justify-content:space-between}
        .brand{display:inline-flex;align-items:center;gap:11px;color:var(--ink);font-size:21px;font-weight:800;letter-spacing:.02em}
        .brand-mark{width:34px;height:34px;border-radius:11px;background:var(--blue);position:relative;box-shadow:5px 5px 0 #d7e7fc}
        .brand-mark:after{content:"";position:absolute;right:7px;bottom:7px;width:10px;height:10px;border-radius:50%;background:var(--yellow)}
        .main-nav{display:flex;align-items:center;gap:28px}
        .main-nav a{color:#4b5d76;font-size:14px;font-weight:600}
        .main-nav a:hover,.main-nav a.active{color:var(--blue)}
        .nav-action{padding:10px 18px;border-radius:9px;background:var(--blue);color:#fff!important;box-shadow:0 7px 15px rgba(23,105,210,.2)}
        .nav-action:hover{background:var(--blue-dark);transform:translateY(-1px)}
        .menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:8px;padding:9px 12px;color:var(--blue);font-weight:700}
        .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.08em}
        .eyebrow:before{content:"";width:24px;height:2px;background:var(--yellow)}
        h1,h2,h3{margin:0;color:var(--ink);line-height:1.25;letter-spacing:-.03em}
        h1{font-size:clamp(38px,5vw,64px);max-width:720px}
        h2{font-size:clamp(28px,3.5vw,42px)}
        h3{font-size:19px}
        .section{padding:92px 0}
        .section.alt{background:var(--paper)}
        .section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:34px}
        .section-head p{max-width:560px;margin:0;color:var(--muted)}
        .hero{padding:74px 0 78px;background:linear-gradient(110deg,#f5f9ff 0%,#fff 58%,#fffaf0 100%);overflow:hidden}
        .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:70px;align-items:center}
        .hero-copy p{font-size:18px;color:#52647d;max-width:650px;margin:25px 0 28px}
        .hero-actions{display:flex;gap:13px;flex-wrap:wrap}
        .button{border-radius:9px;padding:13px 22px;font-weight:700;margin:0;transition:.25s ease}
        .button.primary{background:var(--blue);color:#fff}
        .button.primary:hover{background:var(--blue-dark);box-shadow:0 8px 18px rgba(23,105,210,.22);transform:translateY(-2px)}
        .button.hollow{border:1px solid #a9c5e9;color:var(--blue);background:#fff}
        .button.hollow:hover{border-color:var(--blue);background:var(--blue-soft)}
        .hero-note{display:flex;gap:26px;margin-top:30px;color:var(--muted);font-size:13px}
        .hero-note strong{display:block;color:var(--ink);font-size:16px}
        .hero-visual{position:relative}
        .hero-image{height:390px;border-radius:24px;overflow:hidden;box-shadow:var(--shadow);background:#dcecff}
        .hero-image img{width:100%;height:100%;object-fit:cover}
        .hero-panel{position:absolute;left:-30px;bottom:-24px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 22px;width:230px;box-shadow:var(--shadow)}
        .hero-panel span{font-size:12px;color:var(--muted)}
        .hero-panel strong{display:block;font-size:23px;margin:4px 0;color:var(--blue-dark)}
        .hero-panel em{font-style:normal;color:#7d8da3;font-size:13px}
        .metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
        .metric{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px;box-shadow:var(--shadow)}
        .metric strong{display:block;color:var(--blue);font-size:32px;line-height:1.2}
        .metric span{display:block;margin-top:8px;color:var(--muted);font-size:14px}
        .scene-strip{display:flex;gap:12px;overflow:auto;padding:5px 2px 15px}
        .scene-item{min-width:210px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:19px 20px;box-shadow:0 7px 20px rgba(28,67,116,.05)}
        .scene-item b{display:block;color:var(--ink);margin-bottom:5px}
        .scene-item span{font-size:13px;color:var(--muted)}
        .matrix{display:grid;grid-template-columns:1fr 1.6fr;gap:20px}
        .matrix-intro{background:var(--blue-dark);color:#fff;border-radius:var(--radius);padding:30px}
        .matrix-intro h3{color:#fff;margin-bottom:14px}
        .matrix-intro p{color:#d5e4fa;margin:0}
        .matrix-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
        .matrix-row{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 20px}
        .matrix-row b{display:flex;justify-content:space-between;gap:10px}
        .matrix-row small{display:block;color:var(--muted);margin-top:5px}
        .tag{display:inline-block;background:#edf5ff;color:var(--blue);border-radius:20px;padding:3px 9px;font-size:11px;font-weight:700;white-space:nowrap}
        .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
        .step{position:relative;padding:27px 24px 10px 0}
        .step:not(:last-child){border-right:1px solid var(--line);padding-right:28px;margin-right:28px}
        .step-num{color:var(--yellow);font-size:14px;font-weight:800;letter-spacing:.08em}
        .step h3{margin:10px 0 8px}
        .step p{font-size:14px;color:var(--muted);margin:0}
        .compare-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
        .compare-table{width:100%;border-collapse:collapse;margin:0}
        .compare-table th,.compare-table td{padding:18px 22px;border-bottom:1px solid var(--line);text-align:left}
        .compare-table th{background:#f0f6ff;color:var(--blue-dark);font-size:14px}
        .compare-table td{color:#52647d;font-size:14px}
        .compare-table tr:last-child td{border-bottom:0}
        .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
        .milestone{position:relative;padding:0 24px;border-left:2px solid #c8dcf5}
        .milestone:first-child{border-left-color:var(--blue)}
        .milestone b{display:block;color:var(--blue);font-size:14px;margin-bottom:10px}
        .milestone h3{font-size:17px;margin-bottom:7px}
        .milestone p{font-size:14px;color:var(--muted);margin:0}
        .case-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:20px}
        .case-feature,.case-small{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
        .case-feature{display:grid;grid-template-columns:1fr 1fr}
        .case-feature img{height:100%;width:100%;object-fit:cover;min-height:250px}
        .case-text{padding:28px}
        .case-text p,.case-small p{color:var(--muted);font-size:14px}
        .case-small{padding:24px}
        .case-small + .case-small{margin-top:20px}
        .news-list{border-top:1px solid var(--line)}
        .news-item{display:grid;grid-template-columns:100px 150px 1fr 100px;gap:18px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line)}
        .news-item time{font-size:13px;color:var(--muted)}
        .news-item h3{font-size:17px}
        .news-item p{margin:3px 0 0;color:var(--muted);font-size:14px}
        .read-link{font-weight:700;font-size:13px;text-align:right}
        .assure{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
        .assure-item{padding:24px;background:#fbfdff;border:1px solid var(--line);border-radius:12px}
        .assure-item b{display:block;margin-bottom:8px}
        .assure-item p{margin:0;color:var(--muted);font-size:14px}
        .compat-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
        .checklist{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px 28px}
        .checklist li{list-style:none;padding:10px 0;border-bottom:1px dashed var(--line);color:#52647d}
        .checklist li:last-child{border-bottom:0}
        .checklist li:before{content:"✓";color:var(--blue);font-weight:800;margin-right:10px}
        .quick{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
        .quick-item{background:#fff;border-left:4px solid var(--yellow);padding:22px 24px;border-radius:0 12px 12px 0;box-shadow:var(--shadow)}
        .quick-item b{display:block;margin-bottom:6px}
        .quick-item p{color:var(--muted);font-size:14px;margin:0}
        .accordion{background:transparent;margin:0}
        .accordion-title{border:0;border-bottom:1px solid var(--line);padding:20px 42px 20px 0;color:var(--ink);font-weight:700;background:transparent}
        .accordion-title:hover{background:transparent;color:var(--blue)}
        .accordion-content{border:0;background:#fff;color:var(--muted);padding:0 30px 20px 0;font-size:14px}
        .form-section{background:var(--blue-dark);color:#fff}
        .form-section h2{color:#fff}
        .form-section .section-head p{color:#d7e5f8}
        .form-card{background:#fff;border-radius:var(--radius);padding:28px;color:var(--ink);box-shadow:0 18px 45px rgba(5,35,82,.2)}
        label{font-weight:700;color:var(--ink);font-size:14px}
        input,select,textarea{border:1px solid var(--line)!important;border-radius:8px!important;box-shadow:none!important;background:#fbfdff!important}
        input:focus,select:focus,textarea:focus{border-color:var(--blue)!important}
        textarea{min-height:110px;resize:vertical}
        .privacy-note{font-size:12px;color:var(--muted);margin:8px 0 0}
        .site-footer{background:#102849;color:#c9d8ed;padding:48px 0 25px}
        .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:50px;padding-bottom:35px;border-bottom:1px solid rgba(255,255,255,.14)}
        .footer-brand{color:#fff;margin-bottom:13px}
        .footer-title{color:#fff;font-size:14px;font-weight:700;margin-bottom:12px}
        .site-footer a{color:#c9d8ed;font-size:14px;display:block;margin:7px 0}
        .site-footer a:hover{color:#fff}
        .footer-copy{font-size:12px;color:#9fb3cd;padding-top:20px}
        @media(max-width:1024px){
            .main-nav{gap:16px}.hero-grid{gap:35px}.section{padding:70px 0}
            .metric-grid{grid-template-columns:repeat(2,1fr)}
        }
        @media(max-width:768px){
            .topbar{min-height:66px}.menu-toggle{display:block}.main-nav{display:none;position:absolute;top:66px;left:0;right:0;background:#fff;padding:15px 24px 22px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
            .main-nav.open{display:flex;flex-direction:column;align-items:stretch;gap:0}.main-nav a{padding:12px 0;border-bottom:1px solid #edf1f6}.nav-action{text-align:center;margin-top:10px}
            .hero{padding:58px 0}.hero-grid,.matrix,.case-grid,.compat-grid{grid-template-columns:1fr}.hero-image{height:300px}.hero-panel{left:15px}
            .section-head{display:block}.section-head p{margin-top:15px}.steps,.timeline{grid-template-columns:1fr 1fr;gap:20px}.step:not(:last-child){border-right:0;margin-right:0;padding-right:10px}.timeline .milestone{padding-bottom:20px}
            .matrix-list,.quick,.assure{grid-template-columns:1fr 1fr}.case-feature{grid-template-columns:1fr}.case-feature img{height:220px}
            .news-item{grid-template-columns:80px 1fr}.news-item .tag{width:max-content}.news-item p{grid-column:2}.read-link{grid-column:2;text-align:left}
            .footer-grid{grid-template-columns:1fr 1fr;gap:25px}
        }
        @media(max-width:520px){
            .container{padding:0 18px}h1{font-size:38px}.hero-copy p{font-size:16px}.hero-note{gap:15px}.section{padding:58px 0}
            .metric-grid,.matrix-list,.steps,.timeline,.quick,.assure,.footer-grid{grid-template-columns:1fr}.hero-panel{position:relative;left:0;bottom:auto;margin:15px 10px 0;width:auto}
            .news-item{grid-template-columns:1fr}.news-item p,.read-link{grid-column:1}.news-item .tag{margin-top:3px}.compare-wrap{overflow:auto}.compare-table{min-width:590px}
        }

/* roulang page: category1 */
:root{
 --blue:#1769d2;
 --blue-dark:#0b3f8c;
 --blue-soft:#eaf3ff;
 --yellow:#e9b949;
 --ink:#172b4d;
 --muted:#66758c;
 --line:#dce6f2;
 --paper:#fff;
 --wash:#f5f8fc;
 --warm:#fffdf8;
 --radius:16px;
 --shadow:0 12px 32px rgba(28,67,116,.09);
 --shadow-hover:0 18px 38px rgba(28,67,116,.15);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--wash);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75}
a{color:var(--blue);text-decoration:none;transition:.25s ease}
a:hover{color:var(--blue-dark)}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);box-shadow:0 3px 16px rgba(20,58,105,.05)}
.topbar{min-height:76px;display:flex;align-items:center;justify-content:space-between}
.brand{display:inline-flex;align-items:center;gap:11px;color:var(--ink);font-size:21px;font-weight:800;letter-spacing:.02em}
.brand:hover{color:var(--blue)}
.brand-mark{width:34px;height:34px;border-radius:11px;background:var(--blue);position:relative;box-shadow:5px 5px 0 #d7e7fc}
.brand-mark:after{content:"";position:absolute;right:7px;bottom:7px;width:10px;height:10px;border-radius:50%;background:var(--yellow)}
.main-nav{display:flex;align-items:center;gap:28px}
.main-nav a{color:#4b5d76;font-size:14px;font-weight:600}
.main-nav a:hover,.main-nav a.active{color:var(--blue)}
.nav-action{padding:10px 18px;border-radius:9px;background:var(--blue);color:#fff!important;box-shadow:0 7px 15px rgba(23,105,210,.2)}
.nav-action:hover{background:var(--blue-dark);transform:translateY(-1px)}
.menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:8px;padding:9px 12px;color:var(--blue);font-weight:700;cursor:pointer}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before{content:"";width:24px;height:2px;background:var(--yellow)}
.page-intro{padding:78px 0 62px;background:linear-gradient(115deg,#f3f8ff 0%,#fff 62%,#fffaf0 100%)}
.intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}
h1,h2,h3{margin:0 0 14px;line-height:1.25;letter-spacing:-.02em}
h1{font-size:clamp(36px,5vw,62px);max-width:680px}
h2{font-size:clamp(27px,3vw,38px)}
h3{font-size:19px}
.intro-copy p{max-width:650px;color:#52647d;font-size:18px;margin:22px 0 0}
.intro-aside{background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:var(--shadow)}
.intro-aside img{height:220px;width:100%;object-fit:cover;border-radius:15px;margin-bottom:20px}
.aside-line{display:flex;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding:12px 0;color:var(--muted);font-size:14px}
.aside-line:last-child{border-bottom:0;padding-bottom:0}
.aside-line strong{color:var(--ink)}
.section{padding:82px 0}
.section.alt{background:var(--paper)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:32px}
.section-head p{max-width:570px;margin:0;color:var(--muted)}
.filter-bar{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;display:flex;align-items:center;gap:14px;flex-wrap:wrap;box-shadow:var(--shadow)}
.filter-label{font-weight:800;margin-right:4px}
.filter-tag{border:1px solid #bfd4ee;background:#fff;color:#52647d;border-radius:22px;padding:8px 16px;cursor:pointer;font-size:14px;transition:.2s}
.filter-tag:hover,.filter-tag.active{background:var(--blue);color:#fff;border-color:var(--blue)}
.search-box{margin-left:auto;display:flex;gap:8px}
.search-box input{width:190px;border:1px solid var(--line);border-radius:8px;padding:9px 12px;outline:0}
.search-box input:focus{border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-soft)}
.search-box button{border:0;background:var(--blue);color:#fff;border-radius:8px;padding:9px 15px;cursor:pointer}
.content-stream{display:grid;grid-template-columns:1.25fr .75fr;gap:22px}
.article-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.article-item{display:grid;grid-template-columns:116px 1fr auto;gap:22px;align-items:center;padding:25px 27px;border-bottom:1px solid var(--line)}
.article-item:last-child{border-bottom:0}
.article-thumb{width:116px;height:92px;border-radius:12px;overflow:hidden;background:var(--blue-soft)}
.article-thumb img{width:100%;height:100%;object-fit:cover}
.article-meta{font-size:12px;color:var(--blue);font-weight:700;margin-bottom:6px}
.article-item h3{font-size:19px;margin-bottom:5px}
.article-item p{font-size:14px;color:var(--muted);margin:0}
.read-link{white-space:nowrap;font-size:14px;font-weight:700}
.feature-note{background:var(--blue-dark);color:#fff;border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
.feature-note .tag{background:#dcecff;color:var(--blue-dark)}
.feature-note h3{font-size:24px;margin-top:20px}
.feature-note p{color:#dce5f3;font-size:14px}
.note-list{margin:22px 0 0;padding:0;list-style:none}
.note-list li{padding:12px 0;border-top:1px solid rgba(255,255,255,.18);font-size:14px}
.note-list li:before{content:"＋";color:var(--yellow);font-weight:800;margin-right:8px}
.comparison{width:100%;border-collapse:separate;border-spacing:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.comparison th,.comparison td{text-align:left;padding:18px 22px;border-bottom:1px solid var(--line);vertical-align:top}
.comparison th{background:#eef6ff;color:var(--blue-dark);font-size:14px}
.comparison tr:last-child td{border-bottom:0}
.comparison td{color:#52647d;font-size:14px}
.comparison td:first-child{font-weight:800;color:var(--ink);width:23%}
.scene-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.scene-step{padding:26px 23px;min-height:170px;border-right:1px solid var(--line);position:relative}
.scene-step:last-child{border-right:0}
.scene-step strong{display:flex;align-items:center;gap:10px;color:var(--blue-dark);font-size:18px}
.scene-step strong span{display:inline-flex;width:28px;height:28px;border-radius:50%;align-items:center;justify-content:center;background:var(--yellow);color:#fff;font-size:13px}
.scene-step p{font-size:14px;color:var(--muted);margin:15px 0 0}
.guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.guide-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:29px;box-shadow:var(--shadow)}
.guide-list{list-style:none;margin:0;padding:0}
.guide-list li{display:flex;gap:15px;padding:14px 0;border-bottom:1px dashed var(--line)}
.guide-list li:last-child{border-bottom:0}
.guide-num{flex:0 0 29px;height:29px;border-radius:8px;background:var(--blue-soft);color:var(--blue);font-weight:800;text-align:center;line-height:29px}
.guide-list b{display:block;margin-bottom:3px}
.guide-list span{display:block;color:var(--muted);font-size:14px}
.accordion{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.accordion-item{border-bottom:1px solid var(--line)}
.accordion-item:last-child{border-bottom:0}
.accordion-title{display:block;padding:20px 52px 20px 23px;color:var(--ink);font-weight:700;position:relative}
.accordion-title:after{content:"＋";position:absolute;right:23px;color:var(--blue);font-size:22px;top:15px}
.accordion-title:hover{background:var(--blue-soft);color:var(--blue)}
.accordion-content{padding:0 23px 20px;color:var(--muted);font-size:14px}
.cta-section{background:var(--blue-dark);color:#fff}
.cta-grid{display:grid;grid-template-columns:1fr .9fr;gap:65px;align-items:center}
.cta-section p{color:#dbe6f6}
.contact-form{background:#fff;border-radius:var(--radius);padding:27px;color:var(--ink);box-shadow:var(--shadow)}
.contact-form label{font-weight:700;font-size:14px}
.contact-form input,.contact-form select,.contact-form textarea{border:1px solid var(--line);border-radius:8px;box-shadow:none;margin:7px 0 15px;padding:10px 12px}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-soft)}
.contact-form textarea{min-height:90px;resize:vertical}
.contact-form .button{border:0;cursor:pointer}
.form-note{font-size:12px;color:var(--muted);margin:4px 0 0}
.site-footer{background:#0e2343;color:#cbd7e8;padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:60px;padding-bottom:38px}
.footer-brand{color:#fff;margin-bottom:14px}
.site-footer p{color:#9fb0c8;max-width:330px;font-size:14px}
.footer-title{color:#fff;font-weight:800;margin-bottom:12px}
.site-footer a:not(.brand){display:block;color:#aebed2;font-size:14px;margin:8px 0}
.site-footer a:hover{color:#fff}
.footer-copy{border-top:1px solid rgba(255,255,255,.14);padding-top:20px;color:#91a4bd;font-size:13px}
:focus-visible{outline:3px solid rgba(233,185,73,.8);outline-offset:3px}
@media(max-width:900px){
 .main-nav{gap:15px}
 .intro-grid,.content-stream,.cta-grid{grid-template-columns:1fr;gap:30px}
 .scene-flow{grid-template-columns:repeat(2,1fr)}
 .scene-step:nth-child(2){border-right:0}
 .scene-step:nth-child(-n+2){border-bottom:1px solid var(--line)}
}
@media(max-width:700px){
 .container{padding:0 18px}
 .topbar{min-height:68px}
 .menu-toggle{display:block}
 .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:12px 18px;flex-direction:column;align-items:stretch;gap:0;box-shadow:var(--shadow)}
 .main-nav.is-open{display:flex}
 .main-nav a{padding:13px 4px}
 .nav-action{text-align:center;margin-top:5px}
 .page-intro{padding:55px 0 42px}
 .section{padding:60px 0}
 .section-head{display:block;margin-bottom:24px}
 .section-head p{margin-top:12px}
 h1{font-size:39px}
 .search-box{width:100%;margin-left:0}
 .search-box input{flex:1;width:auto}
 .article-item{grid-template-columns:76px 1fr;padding:20px}
 .article-thumb{width:76px;height:76px}
 .read-link{grid-column:2}
 .guide-grid,.footer-grid{grid-template-columns:1fr;gap:24px}
 .comparison{display:block;overflow-x:auto;white-space:nowrap}
 .comparison th,.comparison td{min-width:180px}
 .scene-flow{grid-template-columns:1fr}
 .scene-step{border-right:0;border-bottom:1px solid var(--line)!important}
 .scene-step:last-child{border-bottom:0!important}
}
@media(max-width:480px){
 .intro-aside{padding:18px}
 .intro-aside img{height:165px}
 .filter-bar{padding:16px}
 .filter-tag{padding:7px 12px}
 .article-item{gap:13px}
 .article-item h3{font-size:16px}
 .article-item p{font-size:13px}
 .feature-note{padding:23px}
}