/* roulang page: index */
:root{
            --blue:#2867c7;
            --blue-dark:#164b9b;
            --blue-soft:#eaf3ff;
            --cyan:#5f9fbd;
            --ink:#172b4d;
            --muted:#64748b;
            --paper:#fbfdff;
            --line:#dbe7f4;
            --accent:#efa94a;
            --radius:18px;
            --shadow:0 16px 42px rgba(36,82,133,.10);
            --shadow-hover:0 22px 48px rgba(36,82,133,.16);
        }
        *,*::before,*::after{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{
            margin:0;
            color:var(--ink);
            background:var(--paper);
            font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB",Arial,sans-serif;
            line-height:1.75;
            font-size:16px;
        }
        a{color:inherit;text-decoration:none;transition:all .25s ease}
        img{max-width:100%;display:block}
        button,input{font:inherit}
        .container{max-width:1200px}
        .site-header{
            background:rgba(251,253,255,.94);
            border-bottom:1px solid rgba(219,231,244,.85);
            position:sticky;top:0;z-index:1030;
            backdrop-filter:blur(14px);
        }
        .navbar{min-height:78px;padding:14px 0}
        .brand{
            display:inline-flex;align-items:center;gap:11px;
            font-weight:800;font-size:20px;letter-spacing:.02em;
            color:var(--ink);
        }
        .brand-mark{
            width:38px;height:38px;border-radius:11px;
            display:grid;place-items:center;
            color:#fff;background:var(--blue);
            font-size:14px;font-weight:800;
            box-shadow:5px 5px 0 #cfe1fa;
        }
        .navbar-nav{gap:7px}
        .nav-link{
            color:#526681!important;font-size:14px;font-weight:700;
            padding:10px 16px!important;border-radius:10px;
        }
        .nav-link:hover,.nav-link.active{
            color:var(--blue)!important;background:var(--blue-soft);
        }
        .nav-cta,.btn-primary-custom{
            color:#fff!important;background:var(--blue);
            border:1px solid var(--blue);border-radius:10px;
            font-weight:800;padding:12px 20px;
            box-shadow:0 8px 18px rgba(40,103,199,.18);
        }
        .nav-cta:hover,.btn-primary-custom:hover{
            background:var(--blue-dark);border-color:var(--blue-dark);
            transform:translateY(-2px);box-shadow:var(--shadow-hover);
        }
        .navbar-toggler{border:1px solid var(--line);padding:8px 10px}
        .navbar-toggler:focus{box-shadow:0 0 0 4px rgba(40,103,199,.15)}
        .hero{
            padding:76px 0 84px;
            background:
                linear-gradient(90deg,rgba(234,243,255,.82),rgba(251,253,255,.3)),
                var(--paper);
            overflow:hidden;
        }
        .hero-shell{
            border:1px solid var(--line);border-radius:28px;
            background:#fff;box-shadow:var(--shadow);
            padding:48px 52px;position:relative;
        }
        .hero-shell:after{
            content:"69";position:absolute;right:38px;bottom:-35px;
            color:#edf5ff;font-size:210px;font-weight:900;line-height:1;
            pointer-events:none;
        }
        .eyebrow,.section-kicker{
            color:var(--blue);font-size:12px;font-weight:900;
            letter-spacing:.16em;text-transform:uppercase;
        }
        .eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:18px}
        .eyebrow:before{content:"";width:24px;height:2px;background:var(--accent)}
        h1,h2,h3{font-weight:850;line-height:1.25;letter-spacing:-.03em}
        h1{font-size:clamp(36px,5vw,64px);max-width:720px;margin:0 0 22px}
        h2{font-size:clamp(28px,3.2vw,42px);margin:8px 0 16px}
        h3{font-size:20px;margin:0 0 10px}
        .hero-copy{max-width:680px;color:var(--muted);font-size:18px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px;position:relative;z-index:1}
        .btn-secondary-custom{
            color:var(--blue);background:#fff;border:1px solid #b9d0ed;
            border-radius:10px;font-weight:800;padding:12px 20px;
        }
        .btn-secondary-custom:hover{background:var(--blue-soft);border-color:var(--blue);transform:translateY(-2px)}
        .hero-meta{display:flex;gap:28px;flex-wrap:wrap;margin-top:34px;position:relative;z-index:1}
        .meta-item{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:14px}
        .meta-dot{width:8px;height:8px;background:var(--accent);border-radius:50%}
        .countdown{
            position:absolute;right:52px;top:48px;width:205px;
            padding:18px;background:#f5f9ff;border:1px solid var(--line);
            border-radius:16px;z-index:1;
        }
        .countdown small{display:block;color:var(--muted);font-weight:700;margin-bottom:5px}
        .countdown strong{font-size:25px;color:var(--blue);letter-spacing:.08em}
        section{padding:100px 0}
        .section-head{max-width:680px;margin-bottom:42px}
        .section-head p{color:var(--muted);margin:0;font-size:17px}
        .pain-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:54px;align-items:start}
        .pain-intro{padding-top:12px}
        .pain-note{
            margin-top:28px;padding:20px 22px;border-left:3px solid var(--blue);
            background:#f3f8ff;color:#536983;border-radius:0 13px 13px 0;
        }
        .problem-stack{display:grid;gap:14px}
        .problem-card{
            display:grid;grid-template-columns:56px 1fr auto;gap:18px;align-items:center;
            padding:23px 24px;background:#fff;border:1px solid var(--line);
            border-radius:16px;box-shadow:0 8px 24px rgba(36,82,133,.06);
            transition:transform .25s,box-shadow .25s;
        }
        .problem-card:hover{transform:translateX(5px);box-shadow:var(--shadow)}
        .number{color:var(--blue);font-size:18px;font-weight:900}
        .problem-card p{margin:0;color:var(--muted);font-size:14px}
        .tag{
            display:inline-flex;align-items:center;padding:5px 9px;border-radius:7px;
            background:var(--blue-soft);color:var(--blue);font-size:12px;font-weight:800;
            white-space:nowrap;
        }
        .solution{background:#f4f8fd}
        .path{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;position:relative}
        .path:before{content:"";position:absolute;top:35px;left:10%;right:10%;height:1px;background:#bcd2ec}
        .step-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:var(--shadow)}
        .step-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:27px}
        .step-index{width:38px;height:38px;display:grid;place-items:center;border-radius:10px;background:var(--blue);color:#fff;font-weight:900;position:relative;z-index:1}
        .step-card p{color:var(--muted);font-size:15px;margin:0}
        .step-link{display:inline-block;margin-top:20px;color:var(--blue);font-weight:800;font-size:14px}
        .results-panel{
            background:var(--blue);color:#fff;border-radius:24px;padding:42px 46px;
            display:grid;grid-template-columns:1.15fr .85fr;gap:35px;box-shadow:var(--shadow-hover);
        }
        .results-panel p{color:#dbeafe;max-width:560px}
        .result-list{display:grid;gap:13px}
        .result-item{padding:18px 20px;background:rgba(255,255,255,.11);border:1px solid rgba(255,255,255,.2);border-radius:13px}
        .result-item strong{display:block;font-size:25px;color:#fff}
        .result-item span{color:#dbeafe;font-size:13px}
        .result-links{display:flex;gap:12px;flex-wrap:wrap;margin-top:25px}
        .link-light-custom{color:#fff;border:1px solid rgba(255,255,255,.5);padding:10px 16px;border-radius:9px;font-weight:700}
        .link-light-custom:hover{background:#fff;color:var(--blue)}
        .voices{background:#f4f8fd}
        .voice-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:22px}
        .quote-card,.mini-quote{background:#fff;border:1px solid var(--line);border-radius:20px;padding:34px;box-shadow:var(--shadow)}
        .quote-card blockquote{font-size:25px;line-height:1.55;font-weight:700;margin:18px 0 28px}
        .quote-mark{font-size:48px;color:var(--blue);line-height:.7;font-weight:900}
        .voice-meta{color:var(--muted);font-size:14px}
        .mini-stack{display:grid;gap:22px}
        .mini-quote{padding:25px}
        .mini-quote p{font-size:15px;color:#526681;margin:0 0 14px}
        .faq-wrap{max-width:850px;margin:auto}
        .accordion-item{border:1px solid var(--line)!important;border-radius:13px!important;overflow:hidden;margin-bottom:12px;background:#fff}
        .accordion-button{font-weight:800;color:var(--ink);padding:20px 22px;background:#fff}
        .accordion-button:not(.collapsed){color:var(--blue);background:var(--blue-soft);box-shadow:none}
        .accordion-button:focus{box-shadow:0 0 0 4px rgba(40,103,199,.12)}
        .accordion-body{color:var(--muted);padding:0 22px 22px;background:var(--blue-soft)}
        .cta-section{padding-top:40px;padding-bottom:110px}
        .cta-box{
            background:#eaf3ff;border:1px solid #c8dcf3;border-radius:25px;
            padding:48px 54px;display:flex;justify-content:space-between;gap:30px;align-items:center;
        }
        .cta-box p{color:var(--muted);max-width:630px;margin:0}
        .cta-actions{display:flex;gap:10px;flex-wrap:wrap;flex-shrink:0}
        footer{background:#eef4fa;border-top:1px solid var(--line);padding:42px 0 24px}
        .footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:40px;padding-bottom:32px}
        .footer-brand p{color:var(--muted);max-width:360px;font-size:14px}
        .footer-title{font-size:14px;font-weight:900;margin-bottom:14px}
        .footer-links{display:grid;gap:8px;color:var(--muted);font-size:14px}
        .footer-links a:hover{color:var(--blue);padding-left:3px}
        .copyright{border-top:1px solid var(--line);padding-top:18px;color:#71849b;font-size:13px}
        @media(max-width:992px){
            .countdown{position:static;margin-top:30px;width:100%}
            .hero-shell{padding:38px 32px}
            .hero-shell:after{right:10px}
            .pain-layout,.results-panel,.voice-layout{grid-template-columns:1fr}
            .path{grid-template-columns:1fr}
            .path:before{top:35px;bottom:35px;left:19px;width:1px;height:auto;right:auto}
            .step-card{margin-left:20px}
            .cta-box{display:block}
            .cta-actions{margin-top:25px}
        }
        @media(max-width:768px){
            section{padding:72px 0}
            .navbar{min-height:68px}
            .navbar-collapse{padding-top:16px}
            .nav-cta{display:block;text-align:center;margin-top:10px}
            h1{font-size:40px}
            .hero{padding:38px 0 50px}
            .hero-shell{padding:30px 22px;border-radius:20px}
            .hero-copy{font-size:16px}
            .hero-meta{gap:15px}
            .problem-card{grid-template-columns:40px 1fr;gap:12px;padding:19px}
            .problem-card .tag{grid-column:2;justify-self:start}
            .results-panel{padding:30px 24px}
            .quote-card,.mini-quote{padding:25px}
            .quote-card blockquote{font-size:21px}
            .cta-box{padding:32px 24px}
            .footer-grid{grid-template-columns:1fr 1fr}
        }
        @media(max-width:520px){
            body{font-size:15px}
            h1{font-size:34px}
            h2{font-size:29px}
            .hero-actions,.cta-actions{display:grid;grid-template-columns:1fr}
            .hero-actions a,.cta-actions a{text-align:center;width:100%}
            .footer-grid{grid-template-columns:1fr;gap:25px}
            .meta-item{font-size:13px}
        }
        :focus-visible{outline:3px solid rgba(239,169,74,.8);outline-offset:3px}

/* roulang page: category2 */
:root{
 --blue:#2867c7;
 --blue-dark:#164b9b;
 --blue-soft:#eaf3ff;
 --cyan:#5f9fbd;
 --ink:#172b4d;
 --muted:#64748b;
 --paper:#fbfdff;
 --line:#dbe7f4;
 --accent:#efa94a;
 --radius:18px;
 --shadow:0 16px 42px rgba(36,82,133,.10);
 --shadow-hover:0 22px 48px rgba(36,82,133,.16);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;color:var(--ink);background:var(--paper);
 font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB",Arial,sans-serif;
 line-height:1.75;font-size:16px;
}
a{color:inherit;text-decoration:none;transition:all .25s ease}
img{max-width:100%;display:block}
button,input{font:inherit}
.container{max-width:1200px}
.site-header{
 background:rgba(251,253,255,.94);border-bottom:1px solid rgba(219,231,244,.85);
 position:sticky;top:0;z-index:1030;backdrop-filter:blur(14px);
}
.navbar{min-height:78px;padding:14px 0}
.brand{
 display:inline-flex;align-items:center;gap:11px;font-weight:800;font-size:20px;
 letter-spacing:.02em;color:var(--ink);white-space:nowrap;
}
.brand-mark{
 width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
 color:#fff;background:var(--blue);font-size:14px;font-weight:800;
 box-shadow:5px 5px 0 #cfe1fa;
}
.navbar-nav{gap:7px}
.nav-link{
 color:#526681!important;font-size:14px;font-weight:700;padding:10px 16px!important;
 border-radius:10px;
}
.nav-link:hover,.nav-link.active{color:var(--blue)!important;background:var(--blue-soft)}
.nav-cta,.btn-primary-custom{
 display:inline-flex;align-items:center;justify-content:center;color:#fff!important;
 background:var(--blue);border:1px solid var(--blue);border-radius:10px;
 font-weight:800;padding:12px 20px;box-shadow:0 8px 18px rgba(40,103,199,.18);
}
.nav-cta:hover,.btn-primary-custom:hover{
 background:var(--blue-dark);border-color:var(--blue-dark);transform:translateY(-2px);
 box-shadow:var(--shadow-hover);
}
.btn-secondary-custom{
 display:inline-flex;align-items:center;justify-content:center;color:var(--blue)!important;
 background:#fff;border:1px solid #b9d0ed;border-radius:10px;font-weight:800;padding:12px 20px;
}
.btn-secondary-custom:hover{background:var(--blue-soft);border-color:var(--blue);transform:translateY(-2px)}
.navbar-toggler{border:1px solid var(--line);padding:8px 10px}
.navbar-toggler:focus,.btn:focus,a:focus,input:focus{
 box-shadow:0 0 0 4px rgba(40,103,199,.15)!important;outline:none;
}
.page-hero{
 padding:58px 0 54px;background:linear-gradient(120deg,#eef6ff 0%,#fbfdff 58%,#f5f9ff 100%);
 border-bottom:1px solid var(--line);overflow:hidden;
}
.breadcrumb{margin:0 0 22px;font-size:14px}
.breadcrumb-item,.breadcrumb-item a{color:var(--muted)}
.breadcrumb-item.active{color:var(--blue);font-weight:700}
.breadcrumb-item+.breadcrumb-item:before{color:#97abc3}
.hero-panel{
 position:relative;background:#fff;border:1px solid var(--line);border-radius:26px;
 padding:42px 46px;box-shadow:var(--shadow);overflow:hidden;
}
.hero-panel:after{
 content:"69";position:absolute;right:35px;top:-47px;font-size:185px;line-height:1;
 font-weight:900;color:#edf5ff;pointer-events:none;
}
.eyebrow,.section-kicker{
 display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:12px;
 font-weight:900;letter-spacing:.15em;
}
.eyebrow:before{content:"";width:25px;height:2px;background:var(--accent)}
.hero-panel h1{position:relative;z-index:1;font-size:clamp(31px,4vw,48px);line-height:1.28;letter-spacing:-.04em;margin:14px 0 16px;font-weight:850}
.hero-panel p{position:relative;z-index:1;max-width:720px;color:var(--muted);font-size:17px;margin:0}
.hero-notes{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.note-pill{
 display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:9px;
 background:var(--blue-soft);color:#45627f;font-size:13px;font-weight:700;
}
.note-pill b{color:var(--blue)}
section{padding:88px 0}
.section-head{max-width:730px;margin-bottom:35px}
.section-head h2{font-size:clamp(26px,3vw,35px);line-height:1.35;font-weight:850;margin:10px 0 12px}
.section-head p{color:var(--muted);margin:0;font-size:16px}
.index-control{
 background:#fff;border:1px solid var(--line);border-radius:18px;padding:15px;
 box-shadow:0 8px 22px rgba(36,82,133,.06);
}
.form-label{font-size:13px;font-weight:800;color:#536a87;margin-bottom:7px}
.form-select,.form-control{
 border:1px solid #cdddf0;border-radius:10px;color:var(--ink);padding:11px 14px;
 background-color:#fcfeff;
}
.form-select:focus,.form-control:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(40,103,199,.11)}
.search-btn{height:48px;width:100%;border:0}
.index-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:30px;align-items:start}
.index-side{
 position:sticky;top:100px;background:#fff;border:1px solid var(--line);border-radius:18px;
 box-shadow:0 10px 28px rgba(36,82,133,.07);padding:22px;
}
.side-title{font-size:15px;font-weight:850;margin-bottom:13px}
.index-nav{display:grid;gap:7px}
.index-nav a{
 display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-radius:10px;
 color:#536a87;font-size:14px;font-weight:700;
}
.index-nav a:hover,.index-nav a.current{color:var(--blue);background:var(--blue-soft)}
.index-nav span{font-size:12px;color:#89a0ba}
.side-tip{margin:21px 0 0;padding-top:18px;border-top:1px dashed #d7e4f3;color:var(--muted);font-size:13px}
.feature-card{
 position:relative;overflow:hidden;display:grid;grid-template-columns:96px 1fr auto;gap:24px;
 align-items:center;background:#fff;border:1px solid #c9ddf4;border-radius:20px;padding:27px 30px;
 box-shadow:var(--shadow);margin-bottom:20px;
}
.feature-card:before{content:"";position:absolute;left:0;top:0;bottom:0;width:7px;background:var(--blue)}
.serial{
 width:65px;height:65px;border-radius:16px;background:var(--blue-soft);display:grid;place-items:center;
 color:var(--blue);font-weight:900;font-size:21px;letter-spacing:.04em;
}
.status-tag,.tag{
 display:inline-flex;align-items:center;padding:5px 9px;border-radius:7px;background:var(--blue-soft);
 color:var(--blue);font-size:12px;font-weight:800;white-space:nowrap;
}
.status-tag{background:#fff4de;color:#ab731f;margin-bottom:8px}
.feature-card h2,.feature-card h3{font-size:22px;font-weight:850;line-height:1.42;margin:0 0 6px}
.feature-card p{margin:0;color:var(--muted);font-size:14px}
.card-action{font-weight:850;color:var(--blue);white-space:nowrap;padding:10px 0}
.card-action:hover{color:var(--blue-dark);transform:translateX(3px)}
.group-block{margin-top:43px;scroll-margin-top:110px}
.group-title{
 display:flex;align-items:end;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);
 padding-bottom:16px;margin-bottom:17px;
}
.group-title h2{font-size:23px;font-weight:850;margin:0}
.group-title p{font-size:13px;color:var(--muted);margin:0}
.index-card{
 position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;padding:23px 24px;
 margin-bottom:13px;box-shadow:0 7px 20px rgba(36,82,133,.05);transition:all .25s ease;
}
.index-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#bfd6f0}
.index-card-inner{display:grid;grid-template-columns:48px 1fr auto;gap:17px;align-items:center}
.item-num{font-size:14px;font-weight:900;color:#7a9ac1}
.index-card h3{font-size:17px;line-height:1.45;font-weight:850;margin:0 0 5px}
.index-card p{margin:0;color:var(--muted);font-size:14px}
.item-meta{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:11px}
.update{font-size:12px;color:#7f94aa}
.read-link{font-size:14px;color:var(--blue);font-weight:850;white-space:nowrap}
.read-link:hover{color:var(--blue-dark)}
.guidance-section{padding-top:42px}
.guidance-box{
 background:#edf6ff;border:1px solid #cbdff5;border-radius:22px;padding:34px 38px;
 display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center;
}
.guidance-box h2{font-size:25px;font-weight:850;margin:0 0 9px}
.guidance-box p{color:var(--muted);margin:0;max-width:720px}
.faq-section{padding-top:72px}
.faq-wrap{max-width:880px;margin:auto}
.accordion-item{border:1px solid var(--line)!important;border-radius:13px!important;overflow:hidden;margin-bottom:12px;background:#fff}
.accordion-button{font-weight:800;color:var(--ink);padding:20px 22px;background:#fff}
.accordion-button:not(.collapsed){color:var(--blue);background:var(--blue-soft);box-shadow:none}
.accordion-button:focus{box-shadow:0 0 0 4px rgba(40,103,199,.12)}
.accordion-body{color:var(--muted);padding:0 22px 22px;background:var(--blue-soft)}
.cta-section{padding:46px 0 106px}
.cta-box{
 background:#eaf3ff;border:1px solid #c8dcf3;border-radius:25px;padding:47px 52px;
 display:flex;justify-content:space-between;gap:30px;align-items:center;
}
.cta-box h2{font-size:30px;font-weight:850;line-height:1.35;margin:0 0 10px}
.cta-box p{color:var(--muted);max-width:640px;margin:0}
.cta-actions{display:flex;gap:10px;flex-wrap:wrap;flex-shrink:0}
footer{background:#eef4fa;border-top:1px solid var(--line);padding:42px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:42px;padding-bottom:35px}
.footer-brand p{color:var(--muted);font-size:14px;max-width:390px}
.footer-title{font-weight:850;font-size:14px;margin-bottom:12px}
.footer-links{display:grid;gap:8px}
.footer-links a{font-size:14px;color:var(--muted)}
.footer-links a:hover{color:var(--blue);transform:translateX(3px)}
.copyright{padding-top:21px;border-top:1px solid #d7e4ef;color:#72869d;font-size:13px}
@media (max-width:991.98px){
 .navbar-collapse{padding:15px 0 4px}.navbar-nav{margin:12px 0!important}.nav-cta{display:flex;width:100%;margin-top:5px}
 .index-layout{grid-template-columns:1fr}.index-side{position:static;display:grid;grid-template-columns:1fr 1fr;gap:20px}.side-tip{margin:0;padding:0;border:0}
 .hero-panel{padding:35px}.feature-card{grid-template-columns:75px 1fr}
 .feature-card .card-action{grid-column:2}
}
@media (max-width:767.98px){
 .page-hero{padding:36px 0}.hero-panel{padding:29px 24px;border-radius:20px}.hero-panel:after{font-size:120px;right:10px}
 section{padding:66px 0}.index-side{display:block}.side-tip{margin-top:20px;padding-top:18px;border-top:1px dashed #d7e4f3}
 .feature-card{grid-template-columns:58px 1fr;padding:23px 20px;gap:15px}.serial{width:52px;height:52px;border-radius:13px;font-size:17px}.feature-card h2,.feature-card h3{font-size:19px}.feature-card .card-action{grid-column:1/-1;padding:0}
 .index-card{padding:20px}.index-card-inner{grid-template-columns:34px 1fr;gap:11px}.read-link{grid-column:2}
 .guidance-box,.cta-box{display:block;padding:30px 25px}.guidance-box .btn-primary-custom,.cta-actions{margin-top:22px}.cta-actions{display:grid}.cta-actions a{width:100%}
 .footer-grid{grid-template-columns:1fr;gap:27px}
}
@media (max-width:519.98px){
 body{font-size:15px}.brand{font-size:18px}.brand-mark{width:35px;height:35px}
 .hero-panel h1{font-size:30px}.hero-panel p{font-size:15px}.note-pill{font-size:12px}
 .group-title{display:block}.group-title p{margin-top:5px}.section-head h2{font-size:26px}
 .index-card h3{font-size:16px}.index-card p{font-size:13px}.breadcrumb{font-size:13px}
}

/* roulang page: category1 */
:root{
 --blue:#2867c7;
 --blue-dark:#164b9b;
 --blue-soft:#eaf3ff;
 --blue-pale:#f4f8fe;
 --cyan:#5f9fbd;
 --ink:#172b4d;
 --muted:#64748b;
 --paper:#fbfdff;
 --white:#ffffff;
 --line:#dbe7f4;
 --line-strong:#c4d9f1;
 --accent:#efa94a;
 --success:#43866d;
 --radius:18px;
 --radius-lg:26px;
 --shadow:0 16px 42px rgba(36,82,133,.10);
 --shadow-sm:0 9px 24px rgba(36,82,133,.07);
 --shadow-hover:0 22px 48px rgba(36,82,133,.16);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;
 color:var(--ink);
 background:var(--paper);
 font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB",Arial,sans-serif;
 font-size:16px;
 line-height:1.75;
 overflow-x:hidden;
}
a{color:inherit;text-decoration:none;transition:all .25s ease}
a:hover{color:inherit}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{
 outline:3px solid rgba(40,103,199,.28);
 outline-offset:3px;
}
.container{max-width:1200px}
.site-header{
 background:rgba(251,253,255,.94);
 border-bottom:1px solid rgba(219,231,244,.85);
 position:sticky;
 top:0;
 z-index:1030;
 backdrop-filter:blur(14px);
}
.navbar{min-height:78px;padding:14px 0}
.brand{
 display:inline-flex;
 align-items:center;
 gap:11px;
 font-weight:800;
 font-size:20px;
 letter-spacing:.02em;
 color:var(--ink);
 white-space:nowrap;
}
.brand:hover{color:var(--blue)}
.brand-mark{
 width:38px;
 height:38px;
 border-radius:11px;
 display:grid;
 place-items:center;
 color:#fff;
 background:var(--blue);
 font-size:14px;
 font-weight:800;
 box-shadow:5px 5px 0 #cfe1fa;
}
.navbar-nav{gap:7px}
.nav-link{
 color:#526681!important;
 font-size:14px;
 font-weight:700;
 padding:10px 16px!important;
 border-radius:10px;
}
.nav-link:hover,.nav-link.active{
 color:var(--blue)!important;
 background:var(--blue-soft);
}
.nav-cta,.btn-primary-custom{
 display:inline-flex;
 align-items:center;
 justify-content:center;
 gap:8px;
 color:#fff!important;
 background:var(--blue);
 border:1px solid var(--blue);
 border-radius:10px;
 font-weight:800;
 padding:12px 20px;
 box-shadow:0 8px 18px rgba(40,103,199,.18);
 cursor:pointer;
}
.nav-cta:hover,.btn-primary-custom:hover{
 background:var(--blue-dark);
 border-color:var(--blue-dark);
 transform:translateY(-2px);
 box-shadow:var(--shadow-hover);
}
.btn-secondary-custom{
 display:inline-flex;
 align-items:center;
 justify-content:center;
 gap:8px;
 color:var(--blue)!important;
 background:#fff;
 border:1px solid #b9d0ed;
 border-radius:10px;
 font-weight:800;
 padding:12px 20px;
 cursor:pointer;
}
.btn-secondary-custom:hover{
 color:var(--blue-dark)!important;
 background:var(--blue-soft);
 border-color:var(--blue);
 transform:translateY(-2px);
}
.navbar-toggler{
 border:1px solid var(--line);
 padding:8px 10px;
 border-radius:10px;
}
.navbar-toggler:focus{box-shadow:0 0 0 4px rgba(40,103,199,.15)}
.navbar-toggler-icon{width:1.25em;height:1.25em}

.page-hero{
 position:relative;
 padding:56px 0 48px;
 background:
 linear-gradient(115deg,rgba(234,243,255,.85) 0%,rgba(251,253,255,.55) 56%,rgba(240,247,255,.85) 100%);
 overflow:hidden;
}
.page-hero:before{
 content:"";
 position:absolute;
 width:420px;
 height:420px;
 border:1px solid rgba(40,103,199,.10);
 border-radius:50%;
 right:-170px;
 top:-205px;
}
.breadcrumb{
 margin:0 0 22px;
 padding:0;
 background:transparent;
 font-size:14px;
}
.breadcrumb-item,.breadcrumb-item a{color:var(--muted)}
.breadcrumb-item a:hover{color:var(--blue)}
.breadcrumb-item+.breadcrumb-item:before{color:#9bb3d0}
.breadcrumb-item.active{color:var(--blue);font-weight:700}
.hero-panel{
 position:relative;
 overflow:hidden;
 padding:42px 44px;
 border:1px solid var(--line);
 border-radius:var(--radius-lg);
 background:rgba(255,255,255,.94);
 box-shadow:var(--shadow);
}
.hero-panel:after{
 content:"01";
 position:absolute;
 right:35px;
 bottom:-42px;
 color:#edf5ff;
 font-size:178px;
 font-weight:900;
 line-height:1;
 pointer-events:none;
}
.eyebrow,.section-kicker{
 display:inline-flex;
 align-items:center;
 gap:8px;
 color:var(--blue);
 font-size:12px;
 font-weight:900;
 letter-spacing:.15em;
}
.eyebrow{margin-bottom:15px;text-transform:uppercase}
.eyebrow:before{
 content:"";
 width:24px;
 height:2px;
 background:var(--accent);
}
h1,h2,h3,h4{color:var(--ink);font-weight:800;letter-spacing:.01em}
h1{
 position:relative;
 z-index:1;
 max-width:790px;
 margin:0 0 16px;
 font-size:clamp(30px,4vw,47px);
 line-height:1.28;
}
.hero-summary{
 position:relative;
 z-index:1;
 max-width:755px;
 margin:0;
 color:var(--muted);
 font-size:17px;
}
.hero-tags{
 position:relative;
 z-index:1;
 display:flex;
 flex-wrap:wrap;
 gap:9px;
 margin-top:24px;
}
.tag{
 display:inline-flex;
 align-items:center;
 padding:5px 10px;
 border-radius:7px;
 color:var(--blue);
 background:var(--blue-soft);
 font-size:12px;
 font-weight:800;
 line-height:1.45;
}
.tag.warm{color:#9b641a;background:#fff4df}
.hero-actions{
 position:relative;
 z-index:1;
 display:flex;
 flex-wrap:wrap;
 gap:12px;
 margin-top:30px;
}
.hero-note{
 position:relative;
 z-index:1;
 display:flex;
 align-items:center;
 gap:9px;
 margin-top:22px;
 color:var(--muted);
 font-size:13px;
}
.note-dot{
 width:8px;
 height:8px;
 flex:0 0 8px;
 border-radius:50%;
 background:var(--success);
 box-shadow:0 0 0 5px rgba(67,134,109,.11);
}

section{padding:86px 0}
.section-kicker{margin-bottom:12px}
.section-head{max-width:720px;margin-bottom:34px}
.section-head h2{
 margin:0 0 12px;
 font-size:clamp(25px,3vw,35px);
 line-height:1.35;
}
.section-head p{margin:0;color:var(--muted);font-size:16px}
.section-divider{
 width:100%;
 height:1px;
 background:var(--line);
}

.featured-area{padding-top:84px}
.featured-card{
 position:relative;
 display:grid;
 grid-template-columns:minmax(0,1.12fr) minmax(320px,.88fr);
 overflow:hidden;
 border:1px solid var(--line);
 border-radius:var(--radius-lg);
 background:#fff;
 box-shadow:var(--shadow);
}
.featured-copy{padding:40px}
.featured-number{
 display:flex;
 align-items:center;
 justify-content:center;
 width:42px;
 height:42px;
 margin-bottom:23px;
 border-radius:12px;
 color:#fff;
 background:var(--blue);
 font-size:13px;
 font-weight:900;
 box-shadow:5px 5px 0 #d4e5fb;
}
.featured-copy h2{margin:0 0 13px;font-size:30px;line-height:1.4}
.featured-copy p{max-width:570px;margin:0;color:var(--muted)}
.topic-list{
 list-style:none;
 margin:26px 0 28px;
 padding:0;
}
.topic-list li{
 display:flex;
 align-items:flex-start;
 gap:11px;
 padding:10px 0;
 border-bottom:1px dashed var(--line);
 color:#405878;
 font-size:14px;
}
.topic-list li:last-child{border-bottom:0}
.check{
 width:19px;
 height:19px;
 flex:0 0 19px;
 margin-top:3px;
 display:grid;
 place-items:center;
 border-radius:50%;
 background:var(--blue-soft);
 color:var(--blue);
 font-size:12px;
 font-weight:900;
}
.featured-side{
 display:flex;
 flex-direction:column;
 justify-content:flex-end;
 min-height:100%;
 padding:34px;
 background:linear-gradient(160deg,#e8f2ff 0%,#f8fbff 100%);
 border-left:1px solid var(--line);
}
.side-label{color:var(--blue);font-size:12px;font-weight:900;letter-spacing:.12em}
.side-title{margin:12px 0 20px;font-size:22px;line-height:1.45}
.entry-metric{
 padding:16px 0;
 border-top:1px solid rgba(40,103,199,.15);
}
.entry-metric strong{display:block;font-size:26px;line-height:1.2}
.entry-metric span{display:block;margin-top:4px;color:var(--muted);font-size:13px}

.reading-section{background:#f4f8fe}
.reading-grid{
 display:grid;
 grid-template-columns:minmax(0,1.55fr) minmax(290px,.72fr);
 gap:28px;
 align-items:start;
}
.content-stack{display:grid;gap:16px}
.content-card{
 position:relative;
 display:grid;
 grid-template-columns:64px minmax(0,1fr) auto;
 gap:20px;
 align-items:center;
 padding:23px 24px;
 border:1px solid var(--line);
 border-radius:17px;
 background:#fff;
 box-shadow:var(--shadow-sm);
 transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.content-card:hover{
 transform:translateX(5px);
 border-color:#bcd4f0;
 box-shadow:var(--shadow);
}
.card-index{
 width:45px;
 height:45px;
 display:grid;
 place-items:center;
 border-radius:12px;
 color:var(--blue);
 background:var(--blue-soft);
 font-size:13px;
 font-weight:900;
}
.content-card h3{margin:0 0 5px;font-size:18px;line-height:1.45}
.content-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
.card-meta{
 display:flex;
 flex-wrap:wrap;
 gap:8px;
 margin-top:10px;
 color:#7a8fa9;
 font-size:12px;
}
.card-arrow{
 width:36px;
 height:36px;
 display:grid;
 place-items:center;
 border:1px solid var(--line);
 border-radius:10px;
 color:var(--blue);
 font-size:20px;
 transition:all .25s ease;
}
.content-card:hover .card-arrow{color:#fff;background:var(--blue);border-color:var(--blue)}
.index-panel{
 padding:29px;
 border:1px solid var(--line);
 border-radius:20px;
 background:#fff;
 box-shadow:var(--shadow-sm);
}
.index-panel h3{margin:0 0 8px;font-size:20px}
.index-panel>p{margin:0 0 20px;color:var(--muted);font-size:14px}
.index-links{display:grid;gap:9px}
.index-link{
 display:flex;
 align-items:center;
 justify-content:space-between;
 gap:12px;
 padding:12px 13px;
 border:1px solid transparent;
 border-radius:10px;
 color:#4e6683;
 font-size:14px;
 font-weight:700;
}
.index-link:hover{color:var(--blue);background:var(--blue-soft);border-color:#d5e5f6}
.index-link b{font-size:12px;color:#91a6bf}
.index-tips{
 margin-top:22px;
 padding:17px;
 border-radius:13px;
 color:#54708e;
 background:#f6faff;
 font-size:13px;
 line-height:1.7;
}
.index-tips strong{display:block;margin-bottom:4px;color:var(--blue)}

.filter-section{padding-top:88px;padding-bottom:74px}
.filter-panel{
 display:flex;
 align-items:center;
 justify-content:space-between;
 gap:22px;
 padding:23px 25px;
 border:1px solid var(--line);
 border-radius:18px;
 background:#fff;
 box-shadow:var(--shadow-sm);
}
.filter-copy h2{margin:0 0 4px;font-size:20px}
.filter-copy p{margin:0;color:var(--muted);font-size:14px}
.filter-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.filter-actions .form-select{
 min-width:158px;
 min-height:43px;
 border:1px solid #c8dced;
 border-radius:10px;
 color:#486481;
 background-color:#fafdff;
 box-shadow:none;
 font-size:14px;
 font-weight:700;
}
.filter-actions .form-select:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(40,103,199,.12)}

.notes-section{padding-top:15px}
.notice-grid{
 display:grid;
 grid-template-columns:1.1fr .9fr;
 gap:26px;
}
.notice-card,.method-card{
 padding:31px;
 border:1px solid var(--line);
 border-radius:20px;
 background:#fff;
 box-shadow:var(--shadow-sm);
}
.notice-card{border-top:4px solid var(--blue)}
.notice-card h2,.method-card h2{margin:0 0 12px;font-size:24px}
.notice-card p,.method-card p{margin:0;color:var(--muted)}
.notice-row{
 display:flex;
 gap:13px;
 margin-top:22px;
 padding-top:18px;
 border-top:1px solid var(--line);
}
.notice-row strong{display:block;font-size:14px}
.notice-row span{display:block;color:var(--muted);font-size:13px}
.notice-icon{
 width:33px;
 height:33px;
 flex:0 0 33px;
 display:grid;
 place-items:center;
 border-radius:10px;
 color:var(--blue);
 background:var(--blue-soft);
 font-size:15px;
 font-weight:900;
}
.method-card{background:linear-gradient(145deg,#f5faff,#fff)}
.method-steps{display:grid;gap:14px;margin-top:20px}
.method-step{
 display:grid;
 grid-template-columns:31px 1fr;
 gap:11px;
 align-items:start;
 color:#4f6681;
 font-size:14px;
}
.method-step b{
 width:28px;
 height:28px;
 display:grid;
 place-items:center;
 border-radius:8px;
 color:#fff;
 background:var(--cyan);
 font-size:12px;
}

.faq-section{padding-top:84px}
.faq-wrap{max-width:900px;margin:auto}
.faq-wrap .section-head{text-align:center;margin-left:auto;margin-right:auto}
.accordion-item{
 overflow:hidden;
 margin-bottom:12px;
 border:1px solid var(--line)!important;
 border-radius:13px!important;
 background:#fff;
 box-shadow:0 6px 18px rgba(36,82,133,.04);
}
.accordion-button{
 padding:20px 22px;
 color:var(--ink);
 background:#fff;
 font-weight:800;
 box-shadow:none!important;
}
.accordion-button:not(.collapsed){
 color:var(--blue);
 background:var(--blue-soft);
}
.accordion-button::after{background-size:1rem}
.accordion-button:focus{box-shadow:0 0 0 4px rgba(40,103,199,.12)!important}
.accordion-body{
 padding:0 22px 22px;
 color:var(--muted);
 background:var(--blue-soft);
}

.cta-section{padding:42px 0 104px}
.cta-box{
 display:flex;
 align-items:center;
 justify-content:space-between;
 gap:30px;
 padding:46px 50px;
 border:1px solid #c8dcf3;
 border-radius:25px;
 background:#eaf3ff;
}
.cta-box h2{margin:0 0 11px;font-size:31px;line-height:1.4}
.cta-box p{max-width:650px;margin:0;color:var(--muted)}
.cta-actions{display:flex;flex-wrap:wrap;gap:10px;flex-shrink:0}

footer{
 padding:42px 0 24px;
 border-top:1px solid var(--line);
 background:#eef4fa;
}
.footer-grid{
 display:grid;
 grid-template-columns:1.7fr .8fr .8fr;
 gap:55px;
 padding-bottom:32px;
}
.footer-brand p{max-width:430px;color:#647b96;font-size:14px}
.footer-title{
 margin:5px 0 13px;
 color:var(--ink);
 font-size:14px;
 font-weight:900;
}
.footer-links{display:grid;gap:9px}
.footer-links a{color:#627992;font-size:14px}
.footer-links a:hover{color:var(--blue);transform:translateX(3px)}
.copyright{
 padding-top:19px;
 border-top:1px solid #d8e5f2;
 color:#7890a9;
 font-size:13px;
}

@media (max-width:991.98px){
 .navbar-collapse{
  margin-top:13px;
  padding:12px;
  border:1px solid var(--line);
  border-radius:14px;
  background:#fff;
  box-shadow:var(--shadow-sm);
 }
 .navbar-nav{margin-bottom:12px}
 .nav-cta{display:flex;width:100%}
 .hero-panel{padding:35px}
 .featured-card{grid-template-columns:1fr}
 .featured-side{border-top:1px solid var(--line);border-left:0}
 .reading-grid{grid-template-columns:1fr}
 .index-panel{display:grid;grid-template-columns:1fr 1fr;column-gap:25px}
 .index-panel h3,.index-panel>p{grid-column:1/-1}
 .index-tips{margin-top:0}
 .footer-grid{gap:30px}
}
@media (max-width:767.98px){
 section{padding:66px 0}
 .page-hero{padding:36px 0}
 .hero-panel{padding:29px 24px;border-radius:21px}
 .hero-panel:after{right:12px;font-size:125px}
 .hero-summary{font-size:16px}
 .featured-area{padding-top:64px}
 .featured-copy,.featured-side{padding:27px 24px}
 .featured-copy h2{font-size:25px}
 .content-card{grid-template-columns:47px minmax(0,1fr);gap:15px;padding:20px}
 .card-arrow{display:none}
 .filter-panel{display:block;padding:22px}
 .filter-actions{margin-top:17px}
 .filter-actions .form-select{flex:1}
 .notice-grid{grid-template-columns:1fr}
 .index-panel{display:block}
 .index-tips{margin-top:20px}
 .cta-box{display:block;padding:34px 26px}
 .cta-box h2{font-size:26px}
 .cta-actions{margin-top:23px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
 .footer-brand{grid-column:1/-1}
}
@media (max-width:519.98px){
 body{font-size:15px}
 .navbar{min-height:70px}
 .brand{font-size:18px}
 .brand-mark{width:34px;height:34px}
 h1{font-size:30px}
 .hero-actions,.cta-actions{display:grid;grid-template-columns:1fr}
 .hero-actions a,.cta-actions a{width:100%}
 .hero-tags{gap:7px}
 .content-card{grid-template-columns:1fr}
 .card-index{width:38px;height:38px}
 .filter-actions{display:grid;grid-template-columns:1fr}
 .filter-actions .form-select{width:100%}
 .notice-card,.method-card{padding:25px 21px}
 .accordion-button{padding:17px}
 .accordion-body{padding:0 17px 18px}
 .footer-grid{grid-template-columns:1fr}
 .footer-brand{grid-column:auto}
}