/* roulang page: index */
:root{
      --brand:#175A9C;--brand-deep:#124a81;--ink:#183247;--muted:#5F7180;--weak:#81909B;
      --line:#DCE7ED;--bg:#F7FAFC;--soft:#F2F7FA;--sage:#6C8E65;--coral:#D87854;
      --radius:16px;--radius-sm:11px;--shadow:0 12px 32px rgba(25,61,88,.08);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.65}
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    button{cursor:pointer}
    button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid rgba(23,90,156,.26);outline-offset:3px}
    .site-container{width:min(1180px,calc(100% - 64px));margin:auto}
    .nav-scroll::-webkit-scrollbar{display:none}
    .nav-scroll{scrollbar-width:none}
    .court-lines:before,.court-lines:after{content:"";position:absolute;pointer-events:none;border:1px solid rgba(23,90,156,.07);border-radius:999px}
    .court-lines:before{width:520px;height:520px;right:-170px;top:-220px}
    .court-lines:after{width:380px;height:200px;right:5%;bottom:-100px;border-radius:380px 380px 0 0}
    .nav-item{transition:.2s ease}
    .nav-item:hover{background:#EDF6FC;color:var(--brand)}
    .nav-item.active{background:#E6F2FB;color:var(--brand);border-color:#B9D8ED}
    .btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;border-radius:11px;padding:.7rem 1rem;font-weight:700;transition:transform .2s ease,background .2s ease,border .2s ease,box-shadow .2s ease}
    .btn:active{transform:translateY(1px)}
    .btn-primary{background:var(--brand);color:#fff;border:1px solid var(--brand);box-shadow:0 8px 18px rgba(23,90,156,.18)}
    .btn-primary:hover{background:var(--brand-deep);box-shadow:0 10px 23px rgba(23,90,156,.24)}
    .btn-secondary{background:#fff;color:var(--brand);border:1px solid #B7D3E7}
    .btn-secondary:hover{background:#EEF7FC;border-color:var(--brand)}
    .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
    .card-hover{transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
    .card-hover:hover{transform:translateY(-3px);border-color:#AFCFE5;box-shadow:0 18px 38px rgba(25,61,88,.12)}
    .section{padding:96px 0}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;border:1px solid #CDE0D6;background:#FAFCFA;color:#496947;border-radius:999px;padding:5px 11px;font-size:13px;font-weight:700}
    .dot{width:7px;height:7px;border-radius:999px;background:var(--sage);display:inline-block}
    .section-title{font-size:clamp(26px,3vw,38px);line-height:1.24;letter-spacing:-.03em;font-weight:800;margin:0;color:var(--ink)}
    .section-copy{max-width:650px;margin:14px 0 0;color:var(--muted);font-size:15px}
    .badge{display:inline-flex;align-items:center;border-radius:999px;padding:4px 9px;font-size:12px;font-weight:700;line-height:1.2}
    .badge-blue{color:var(--brand);background:#EAF4FA}.badge-green{color:#4D6B48;background:#EFF5EE}.badge-warm{color:#A5593F;background:#FEF0EB}
    .iconbox{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:#EDF5FA;color:var(--brand);transition:.2s ease}
    .card-hover:hover .iconbox{background:#DDEEF9}
    .cover-grid{background-color:#EAF3F8;background-image:linear-gradient(rgba(23,90,156,.11) 1px,transparent 1px),linear-gradient(90deg,rgba(23,90,156,.11) 1px,transparent 1px);background-size:28px 28px}
    .faq-panel{overflow:hidden;transition:.22s ease}
    .faq-answer{display:none}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-mark:after{transform:rotate(0)}
    .faq-mark:before,.faq-mark:after{content:"";position:absolute;width:14px;height:1.5px;background:var(--brand);left:50%;top:50%;transform:translate(-50%,-50%)}
    .faq-mark:after{transform:translate(-50%,-50%) rotate(90deg);transition:.2s ease}
    .footer-link{color:var(--muted);transition:.2s ease}
    .footer-link:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
    @media(max-width:1024px){.site-container{width:min(100% - 48px,1180px)}.section{padding:76px 0}}
    @media(max-width:768px){.site-container{width:calc(100% - 32px)}.section{padding:62px 0}.desktop-search{display:none}.court-lines:before{right:-290px}.hero-preview{min-height:355px}}
    @media(max-width:520px){.site-container{width:calc(100% - 28px)}.section{padding:56px 0}.section-copy{font-size:14px}.mobile-brand{max-width:180px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.hero-preview{min-height:315px}.nav-item{min-width:74px}}

/* roulang page: category1 */
:root{
 --brand:#175A9C;--brand-deep:#124a81;--ink:#183247;--muted:#5F7180;--weak:#81909B;
 --line:#DCE7ED;--bg:#F7FAFC;--soft:#F2F7FA;--sage:#6C8E65;--coral:#D87854;
 --radius:16px;--radius-sm:11px;--shadow:0 12px 32px rgba(25,61,88,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.65}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid rgba(23,90,156,.26);outline-offset:3px}
.site-container{width:min(100% - 64px,1180px);margin:auto}
.nav-scroll::-webkit-scrollbar,.chip-scroll::-webkit-scrollbar{display:none}
.nav-scroll,.chip-scroll{scrollbar-width:none}
.nav-item{border:1px solid transparent;transition:.2s ease}
.nav-item:hover{background:#EDF6FC;color:var(--brand)}
.nav-item.active{background:#E6F2FB;color:var(--brand);border-color:#B9D8ED}
.btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;border-radius:11px;padding:.7rem 1rem;font-weight:700;transition:transform .2s ease,background .2s ease,border .2s ease,box-shadow .2s ease}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);color:#fff;border:1px solid var(--brand);box-shadow:0 8px 18px rgba(23,90,156,.18)}
.btn-primary:hover{background:var(--brand-deep);box-shadow:0 10px 23px rgba(23,90,156,.24)}
.btn-secondary{background:#fff;color:var(--brand);border:1px solid #B7D3E7}
.btn-secondary:hover{background:#EEF7FC;border-color:var(--brand)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.card-hover{transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.card-hover:hover{transform:translateY(-3px);border-color:#AFCFE5;box-shadow:0 18px 38px rgba(25,61,88,.12)}
.section{padding:84px 0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;border:1px solid #CDE0D6;background:#FAFCFA;color:#496947;border-radius:999px;padding:5px 11px;font-size:13px;font-weight:700}
.section-title{font-size:clamp(26px,3vw,38px);line-height:1.24;letter-spacing:-.03em;font-weight:800;margin:0;color:var(--ink)}
.section-copy{max-width:650px;margin:14px 0 0;color:var(--muted);font-size:15px}
.badge{display:inline-flex;align-items:center;border-radius:999px;padding:4px 9px;font-size:12px;font-weight:700;line-height:1.2}
.badge-blue{color:var(--brand);background:#EAF4FA}
.badge-green{color:#4D6B48;background:#EFF5EE}
.badge-warm{color:#A5593F;background:#FEF0EB}
.cover-grid{background-color:#EAF3F8;background-image:linear-gradient(rgba(23,90,156,.11) 1px,transparent 1px),linear-gradient(90deg,rgba(23,90,156,.11) 1px,transparent 1px);background-size:28px 28px}
.footer-link{color:var(--muted);transition:.2s ease}
.footer-link:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
.page-banner{position:relative;overflow:hidden;background:#EDF5F9;border-bottom:1px solid #DDEAF1}
.page-banner:after{content:"";position:absolute;width:460px;height:460px;right:-160px;top:-275px;border:1px solid rgba(23,90,156,.10);border-radius:50%;box-shadow:0 0 0 48px rgba(23,90,156,.035),0 0 0 96px rgba(23,90,156,.025)}
.filter-chip{white-space:nowrap;border:1px solid #D4E2EA;background:#fff;color:var(--muted);border-radius:999px;padding:8px 13px;font-size:13px;font-weight:700;transition:.2s ease}
.filter-chip:hover{border-color:#9FC7E1;background:#F2F8FC;color:var(--brand)}
.filter-chip.selected{border-color:var(--brand);background:var(--brand);color:#fff}
.cover-art{position:relative;overflow:hidden;min-height:190px;background:linear-gradient(145deg,#D9EAF4,#F7FBFD)}
.cover-art:before{content:"";position:absolute;width:190px;height:190px;border:1px solid rgba(23,90,156,.20);border-radius:50%;right:-45px;top:-65px;box-shadow:0 0 0 28px rgba(23,90,156,.06),0 0 0 56px rgba(23,90,156,.04)}
.cover-art:after{content:"";position:absolute;left:24px;right:24px;bottom:28px;height:48px;border:1px solid rgba(23,90,156,.22);border-radius:9px;background:rgba(255,255,255,.56)}
.cover-deep{background:linear-gradient(145deg,#D9E7EF,#EDF5F7)}
.cover-sage{background:linear-gradient(145deg,#E8F0E6,#F8FBF7)}
.cover-warm{background:linear-gradient(145deg,#F4E8E0,#FBF8F5)}
.meta-dot{width:5px;height:5px;border-radius:50%;background:var(--sage);display:inline-block}
.faq-answer{display:none}
.faq-item.open .faq-answer{display:block}
.faq-mark:before,.faq-mark:after{content:"";position:absolute;width:14px;height:1.5px;background:var(--brand);left:50%;top:50%;transform:translate(-50%,-50%)}
.faq-mark:after{transform:translate(-50%,-50%) rotate(90deg);transition:.2s ease}
.faq-item.open .faq-mark:after{transform:translate(-50%,-50%)}
@media(max-width:1024px){.site-container{width:min(100% - 48px,1180px)}.section{padding:72px 0}}
@media(max-width:768px){.site-container{width:calc(100% - 32px)}.section{padding:60px 0}.desktop-search{display:none}.mobile-brand{max-width:180px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}}
@media(max-width:520px){.site-container{width:calc(100% - 28px)}.section{padding:54px 0}.section-copy{font-size:14px}.nav-item{min-width:92px}.cover-art{min-height:175px}}