/* roulang page: index */
:root{
      --bg:#f3f7fa;--paper:#fff;--ice:#e9f2f8;--ice-2:#dcebf4;--blue:#4e7fa5;
      --blue-dark:#345d7d;--ink:#183044;--muted:#6b7d8c;--line:#d7e2e9;
      --warm:#a8795f;--radius:16px;--shadow:0 14px 34px rgba(43,73,96,.09);
      --shadow-hover:0 19px 40px rgba(43,73,96,.15);
    }
    *,*:before,*:after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8}
    a{color:var(--blue-dark);text-decoration:none;transition:color .2s,border-color .2s,background .2s,transform .2s}
    a:hover{color:var(--blue);text-decoration:underline;text-underline-offset:4px}
    button,input{font:inherit}
    button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid rgba(78,127,165,.3);outline-offset:3px}
    .container{max-width:1180px;margin:0 auto;padding:0 24px}
    .site-header{height:84px;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
    .nav-wrap{height:84px;display:flex;align-items:center;justify-content:space-between}
    .brand{display:flex;align-items:center;gap:12px;color:var(--ink);font-weight:800;letter-spacing:-.03em;font-size:18px;white-space:nowrap}
    .brand-mark{width:30px;height:30px;border:2px solid var(--blue);border-radius:9px;position:relative}
    .brand-mark:after{content:"";position:absolute;width:8px;height:8px;background:var(--blue);border-radius:50%;left:9px;top:9px}
    .nav-links{display:flex;align-items:center;gap:28px}
    .nav-links a{height:44px;display:flex;align-items:center;color:var(--muted);font-size:14px;border-bottom:2px solid transparent}
    .nav-links a:hover,.nav-links a.active{color:var(--blue-dark);border-color:var(--blue);text-decoration:none}
    .nav-action{background:var(--blue);color:#fff!important;padding:0 17px;border-radius:10px;border:0!important}
    .nav-action:hover{background:var(--blue-dark);color:#fff!important}
    .menu-toggle{display:none;background:none;border:0;color:var(--ink);font-size:26px}
    .notice{background:var(--ice);border-bottom:1px solid var(--line);font-size:13px;color:var(--muted);padding:9px 0}
    .notice strong{color:var(--warm);font-weight:700;margin-right:8px}
    .section{padding:92px 0}
    .hero{padding:76px 0 70px;background:linear-gradient(135deg,#f5f9fb 0%,#e8f1f6 100%);border-bottom:1px solid var(--line)}
    .hero-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:24px}
    .hero-main,.hero-card,.mini-card,.preview,.reminder,.faq-shell,.quote-main,.quote-side,.cta{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:50px 48px;position:relative;overflow:hidden}
    .hero-main:after{content:"";position:absolute;width:220px;height:220px;border-radius:50%;background:var(--ice);right:-85px;bottom:-110px;opacity:.7}
    .eyebrow,.tag{display:inline-flex;align-items:center;color:var(--blue-dark);background:var(--ice);border-radius:99px;padding:4px 11px;font-size:12px;font-weight:700;letter-spacing:.04em}
    h1,h2,h3{line-height:1.25;letter-spacing:-.035em;margin:0 0 18px;font-weight:800;color:var(--ink)}
    h1{font-size:clamp(36px,5vw,58px);max-width:680px;margin-top:24px}
    h2{font-size:clamp(28px,3vw,38px)}
    h3{font-size:20px}
    .hero-copy{font-size:17px;color:var(--muted);max-width:650px;margin:0 0 28px}
    .actions{display:flex;gap:12px;flex-wrap:wrap}
    .button{min-height:46px;border-radius:11px;padding:11px 19px;display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;margin:0}
    .button.primary{background:var(--blue);color:#fff}
    .button.primary:hover{background:var(--blue-dark);transform:translateY(-2px);text-decoration:none}
    .button.secondary{background:#fff;border:1px solid var(--line);color:var(--blue-dark)}
    .button.secondary:hover{background:var(--ice);border-color:var(--blue);text-decoration:none}
    .hero-side{display:grid;gap:24px}
    .hero-card{padding:28px;min-height:220px}
    .hero-card.dark{background:var(--ink);color:#eaf2f6;border-color:var(--ink)}
    .hero-card.dark h3,.hero-card.dark .small{color:#fff}
    .small{color:var(--muted);font-size:13px;line-height:1.7}
    .number{font-size:42px;font-weight:800;color:var(--blue-dark);line-height:1;margin:18px 0 8px}
    .dark .number{color:#b8d5e6}
    .hero-strip{grid-column:1/-1;display:flex;gap:10px;flex-wrap:wrap;padding:18px 22px;background:rgba(255,255,255,.68);border:1px solid var(--line);border-radius:13px}
    .strip-item{color:var(--muted);font-size:13px;padding-right:18px;border-right:1px solid var(--line)}
    .strip-item:last-child{border:0}
    .section-heading{max-width:700px;margin-bottom:38px}
    .section-heading p{color:var(--muted);margin:0;font-size:16px}
    .feature-layout{display:grid;grid-template-columns:.3fr .7fr;gap:36px}
    .index-note{padding-top:8px;color:var(--muted);font-size:14px}
    .index-note strong{display:block;color:var(--blue-dark);font-size:13px;margin-bottom:12px}
    .step-list{display:grid;gap:16px}
    .step-card{display:grid;grid-template-columns:55px 1fr auto;gap:18px;align-items:start;padding:27px 30px;background:var(--paper);border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s}
    .step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
    .step-no{font-size:14px;color:var(--blue);font-weight:800;padding-top:3px}
    .step-card p{color:var(--muted);margin:0;font-size:14px}
    .arrow{color:var(--blue);font-size:22px}
    .preview-section{background:#fff}
    .preview-grid{display:grid;grid-template-columns:.3fr .7fr;gap:38px;align-items:start}
    .metrics{display:grid;gap:16px}
    .metric{padding:23px 24px;border-left:3px solid var(--blue);background:var(--ice);border-radius:12px}
    .metric strong{display:block;font-size:31px;line-height:1.2;color:var(--blue-dark)}
    .metric span{font-size:13px;color:var(--muted)}
    .preview{overflow:hidden}
    .filter-row{display:flex;gap:8px;padding:18px 20px;border-bottom:1px solid var(--line);overflow:auto;white-space:nowrap}
    .filter{border:1px solid var(--line);background:#fff;color:var(--muted);border-radius:99px;padding:7px 13px;font-size:12px}
    .filter.active,.filter:hover{background:var(--ice);color:var(--blue-dark);border-color:#b8d3e1}
    .content-row{display:grid;grid-template-columns:100px 1fr auto;gap:18px;align-items:center;padding:20px 24px;border-bottom:1px solid var(--line)}
    .cover{height:64px;border-radius:10px;background:linear-gradient(145deg,#dcebf3,#aec9d8);display:flex;align-items:center;justify-content:center;color:#47708b;font-weight:800;font-size:19px}
    .content-row:last-child{border:0}
    .content-row h3{font-size:16px;margin:4px 0 3px}
    .content-row p{font-size:13px;color:var(--muted);margin:0}
    .meta{font-size:12px;color:var(--muted);white-space:nowrap}
    .quotes{background:#edf3f7}
    .quote-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:18px}
    .quote-main{padding:38px 42px;min-height:230px}
    .quote-main blockquote{font-size:25px;line-height:1.55;margin:20px 0;color:var(--ink);font-weight:700}
    .quote-side-wrap{display:grid;gap:18px}
    .quote-side{padding:24px}
    .quote-side blockquote{font-size:15px;margin:13px 0;color:var(--ink)}
    .person{font-size:12px;color:var(--muted)}
    .reminder-section{padding-top:78px}
    .reminder{padding:34px 38px;display:flex;align-items:center;justify-content:space-between;gap:30px}
    .reminder h2{font-size:27px;margin-bottom:8px}
    .reminder p{margin:0;color:var(--muted);font-size:14px}
    .faq-shell{padding:28px}
    .accordion{background:transparent;margin:0}
    .accordion-title{color:var(--ink);font-size:15px;font-weight:700;padding:20px 12px;border-bottom:1px solid var(--line)}
    .accordion-title:hover{background:var(--ice);color:var(--blue-dark)}
    .accordion-content{color:var(--muted);font-size:14px;line-height:1.8;padding:18px 12px;background:#fbfdfe}
    .cta-section{padding:0 0 92px}
    .cta{padding:42px 46px;background:linear-gradient(110deg,#e4f0f6,#f8fbfc);display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta h2{margin:0;font-size:31px}
    .cta p{margin:10px 0 0;color:var(--muted);font-size:14px}
    .cta-actions{display:flex;gap:10px;flex-wrap:wrap}
    .footer{border-top:1px solid var(--line);background:#eef4f7;padding:50px 0 28px}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:40px}
    .footer h3{font-size:15px;margin-bottom:14px}
    .footer p,.footer a,.copyright{font-size:13px;color:var(--muted)}
    .footer-links{display:grid;gap:7px}
    .copyright{border-top:1px solid var(--line);margin-top:35px;padding-top:20px}
    .modal-overlay{position:fixed;inset:0;background:rgba(24,48,68,.42);display:flex;align-items:center;justify-content:center;padding:20px;z-index:50}
    .age-modal{max-width:460px;background:#fff;border-radius:18px;padding:35px;box-shadow:0 24px 70px rgba(24,48,68,.24);text-align:center}
    .age-modal h2{font-size:28px}.age-modal p{color:var(--muted);font-size:14px}.age-actions{display:flex;gap:10px;justify-content:center;margin-top:22px}
    .is-hidden{display:none}
    @media(max-width:900px){.hero-grid,.feature-layout,.preview-grid,.quote-grid{grid-template-columns:1fr}.hero-side{grid-template-columns:1fr 1fr}.hero-strip{grid-column:auto}.footer-grid{grid-template-columns:1fr 1fr}}
    @media(max-width:700px){
      .site-header,.nav-wrap{height:70px}.container{padding:0 18px}.nav-wrap{position:relative}.menu-toggle{display:block}.nav-links{display:none;position:absolute;top:70px;left:-18px;right:-18px;background:#fff;border-bottom:1px solid var(--line);padding:8px 18px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}.nav-links.open{display:flex}.nav-links a{height:48px;border-bottom:1px solid var(--line)}.nav-action{justify-content:center;margin:9px 0}
      .brand{font-size:15px}.hero{padding:48px 0}.hero-main{padding:32px 25px}h1{font-size:36px}.hero-side{grid-template-columns:1fr}.section{padding:65px 0}.step-card{grid-template-columns:38px 1fr; padding:23px 20px}.step-card .arrow{grid-column:2}.content-row{grid-template-columns:70px 1fr;gap:13px;padding:17px 15px}.meta{grid-column:2}.cover{height:58px}.reminder,.cta{display:block;padding:28px 24px}.reminder .button,.cta-actions{margin-top:20px}.cta-actions .button{width:100%}.footer-grid{grid-template-columns:1fr}.age-actions{flex-direction:column}.age-actions .button{width:100%}.strip-item{border:0}.quote-main{padding:28px 25px}.quote-main blockquote{font-size:21px}}
    @media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category2 */
:root{
--bg:#f3f7fa;--paper:#fff;--ice:#e9f2f8;--ice-2:#dcebf4;--blue:#4e7fa5;
--blue-dark:#345d7d;--ink:#183044;--muted:#6b7d8c;--line:#d7e2e9;
--warm:#a8795f;--radius:16px;--shadow:0 14px 34px rgba(43,73,96,.09);
--shadow-hover:0 19px 40px rgba(43,73,96,.15)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8}
a{color:var(--blue-dark);text-decoration:none;transition:color .2s,border-color .2s,background .2s,transform .2s,box-shadow .2s}
a:hover{color:var(--blue);text-decoration:none}
button,input{font:inherit}
button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid rgba(78,127,165,.3);outline-offset:3px}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
.site-header{height:84px;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.nav-wrap{height:84px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink);font-weight:800;letter-spacing:-.03em;font-size:18px;white-space:nowrap}
.brand:hover{color:var(--ink)}
.brand-mark{width:30px;height:30px;border:2px solid var(--blue);border-radius:9px;position:relative;flex:0 0 auto}
.brand-mark:after{content:"";position:absolute;width:8px;height:8px;background:var(--blue);border-radius:50%;left:9px;top:9px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{height:44px;display:flex;align-items:center;color:var(--muted);font-size:14px;border-bottom:2px solid transparent}
.nav-links a:hover,.nav-links a.active{color:var(--blue-dark);border-color:var(--blue)}
.nav-action{background:var(--blue);color:#fff!important;padding:0 17px;border-radius:10px;border:0!important}
.nav-action:hover{background:var(--blue-dark);transform:translateY(-1px)}
.menu-toggle{display:none;background:none;border:0;color:var(--ink);font-size:25px;line-height:1;padding:9px;cursor:pointer}
.notice-bar{background:#edf4f7;border-bottom:1px solid var(--line);color:#5e707d;font-size:13px}
.notice-inner{min-height:42px;display:flex;align-items:center;gap:10px}
.notice-dot{width:7px;height:7px;border-radius:50%;background:var(--warm);flex:0 0 auto}
.breadcrumb{padding:27px 0 0;font-size:13px;color:var(--muted)}
.breadcrumb a{color:var(--muted)}
.breadcrumb span{margin:0 8px;color:#a5b2ba}
.page-hero{padding:38px 0 72px;background:linear-gradient(135deg,#f7fafb 0%,#e7f1f6 100%);border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.page-hero:after{content:"";position:absolute;width:430px;height:430px;border:1px solid rgba(78,127,165,.13);border-radius:50%;right:-175px;top:-255px}
.hero-intro{padding:30px 5px 16px;position:relative;z-index:1}
.eyebrow,.tag{display:inline-flex;align-items:center;border-radius:99px;background:var(--ice);color:var(--blue-dark);padding:4px 11px;font-size:12px;font-weight:700;letter-spacing:.04em}
h1,h2,h3,p{margin-top:0}
h1{font-size:48px;line-height:1.22;letter-spacing:-.045em;margin:18px 0;color:var(--ink);font-weight:800}
h2{font-size:31px;line-height:1.35;letter-spacing:-.03em;margin:0 0 13px;font-weight:800}
h3{font-size:18px;line-height:1.45;margin:0 0 8px;font-weight:750}
.hero-copy{max-width:690px;color:var(--muted);font-size:16px;margin:0 0 22px}
.hero-actions,.cta-actions{display:flex;flex-wrap:wrap;gap:10px}
.button{min-height:46px;border-radius:11px;padding:10px 19px;display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;transition:transform .2s,box-shadow .2s,background .2s}
.button.primary{background:var(--blue);color:#fff}
.button.primary:hover{background:var(--blue-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 18px rgba(52,93,125,.18)}
.button.secondary{background:#fff;color:var(--blue-dark);border:1px solid var(--line)}
.button.secondary:hover{background:var(--ice);border-color:var(--blue)}
.directory-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:23px 25px;position:relative;z-index:1}
.directory-card .card-label{font-size:12px;color:var(--muted);margin-bottom:11px}
.toc-item{display:grid;grid-template-columns:38px 1fr auto;gap:10px;align-items:center;padding:13px 0;border-top:1px solid var(--line);font-size:14px;color:var(--ink)}
.toc-item:first-of-type{border-top:0}
.toc-number{font-size:12px;color:var(--blue);font-weight:800}
.toc-arrow{font-size:18px;color:var(--blue)}
.section{padding:88px 0}
.section-heading{max-width:720px;margin-bottom:32px}
.section-heading p{color:var(--muted);margin:0}
.topic-section{padding:42px 0;border-top:1px solid var(--line)}
.topic-section:first-child{padding-top:0;border-top:0}
.topic-head{display:grid;grid-template-columns:120px 1fr;gap:30px;align-items:start;margin-bottom:20px}
.topic-num{color:var(--blue);font-weight:800;font-size:13px;letter-spacing:.1em;padding-top:7px}
.topic-summary{color:var(--muted);margin:0;max-width:720px;font-size:15px}
.article-list{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.article-row{display:grid;grid-template-columns:75px 1fr 110px 20px;gap:18px;align-items:center;padding:20px 24px;border-bottom:1px solid var(--line);transition:background .2s,transform .2s}
.article-row:last-child{border-bottom:0}
.article-row:hover{background:#f3f8fb;transform:translateX(2px)}
.article-code{font-size:12px;font-weight:800;color:var(--blue-dark);background:var(--ice);border-radius:9px;padding:6px 8px;text-align:center}
.article-row h3{font-size:16px;margin:0 0 3px}
.article-row p{font-size:13px;color:var(--muted);margin:0;line-height:1.6}
.article-meta{font-size:12px;color:var(--muted);text-align:right;white-space:nowrap}
.row-arrow{font-size:21px;color:var(--blue)}
.more-link{display:inline-flex;align-items:center;gap:8px;margin:17px 4px 0;font-size:14px;font-weight:700;border-bottom:1px solid currentColor}
.reading-note{background:var(--ice);border:1px solid #cfdee7;border-radius:var(--radius);padding:34px 37px;box-shadow:0 10px 28px rgba(43,73,96,.05)}
.reading-note h2{font-size:25px}
.note-grid{margin-top:19px}
.note-item{padding:10px 20px 10px 0;color:#506774;font-size:14px}
.note-item strong{display:block;color:var(--ink);font-size:14px;margin-bottom:2px}
.note-mark{color:var(--warm);font-weight:800;margin-right:7px}
.faq-section{background:#edf4f7;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.faq-shell{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.faq-grid{display:grid;grid-template-columns:1fr 1fr}
.faq-col:first-child{border-right:1px solid var(--line)}
.accordion{margin:0;background:transparent}
.accordion-item{border-bottom:1px solid var(--line)}
.accordion-item:last-child{border-bottom:0}
.accordion-title{position:relative;padding:19px 43px 19px 20px;color:var(--ink);font-size:15px;font-weight:700;border:0;background:#fff;line-height:1.5}
.accordion-title:before{content:"+";right:19px;top:19px;color:var(--blue);font-size:22px;font-weight:400}
.is-active>.accordion-title{background:#f5f9fb;color:var(--blue-dark)}
.is-active>.accordion-title:before{content:"−"}
.accordion-content{padding:0 20px 20px;border:0;background:#f5f9fb;color:var(--muted);font-size:14px;line-height:1.8}
.closing{padding:70px 0 92px}
.closing-card{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:34px 40px;border:1px solid #cddfe9;border-radius:var(--radius);background:linear-gradient(110deg,#e3f0f6,#f9fbfc);box-shadow:var(--shadow)}
.closing-card h2{font-size:28px;margin-bottom:8px}
.closing-card p{color:var(--muted);font-size:14px;margin:0}
.footer{border-top:1px solid var(--line);background:#eef4f7;padding:50px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:40px}
.footer h3{font-size:15px;margin-bottom:14px}
.footer p,.footer a,.copyright{font-size:13px;color:var(--muted)}
.footer p{max-width:330px}
.footer-links{display:grid;gap:7px}
.footer a:hover{color:var(--blue-dark)}
.small{font-size:12px;color:var(--muted)}
.copyright{border-top:1px solid var(--line);margin-top:35px;padding-top:20px}
.age-layer{position:fixed;inset:0;z-index:100;background:rgba(24,48,68,.42);display:flex;align-items:center;justify-content:center;padding:20px}
.age-dialog{width:min(450px,100%);background:#fff;border:1px solid var(--line);border-radius:18px;padding:31px;box-shadow:0 22px 55px rgba(20,47,66,.25)}
.age-dialog h2{font-size:24px;margin-bottom:9px}
.age-dialog p{font-size:14px;color:var(--muted);margin-bottom:20px}
.age-actions{display:flex;gap:10px}
@media(max-width:1024px){
.container{padding:0 22px}.nav-links{gap:16px}.nav-links a{font-size:13px}
h1{font-size:42px}.article-row{grid-template-columns:68px 1fr 95px 18px;gap:13px}
}
@media(max-width:767px){
.container{padding:0 18px}.site-header,.nav-wrap{height:70px}.brand{font-size:15px;gap:9px}.brand-mark{width:27px;height:27px}.brand-mark:after{left:8px;top:8px}
.menu-toggle{display:block}.nav-links{display:none;position:absolute;top:70px;left:-18px;right:-18px;padding:10px 18px 18px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 14px 24px rgba(43,73,96,.1);align-items:stretch;gap:2px}
.nav-links.is-open{display:flex;flex-direction:column}.nav-links a{width:100%;height:46px;padding:0 4px;border-bottom:1px solid #edf2f5}.nav-links .nav-action{justify-content:center;margin-top:8px;padding:0 14px;border-bottom:0}
.notice-inner{align-items:flex-start;padding:10px 0;line-height:1.55}.page-hero{padding:25px 0 56px}.breadcrumb{padding-top:21px}.hero-intro{padding:25px 0 4px}
h1{font-size:33px;line-height:1.28}.hero-copy{font-size:15px}.hero-actions,.age-actions{flex-direction:column}.button{width:100%}
.directory-card{margin-top:22px;padding:21px}.section{padding:64px 0}.topic-section{padding:33px 0}.topic-head{grid-template-columns:1fr;gap:5px;margin-bottom:17px}.topic-num{padding-top:0}
.article-row{grid-template-columns:55px 1fr 17px;gap:12px;padding:17px}.article-meta{display:none}.article-row p{font-size:12px}.article-row h3{font-size:15px}
.reading-note{padding:26px 22px}.note-item{padding-right:0}.faq-grid{grid-template-columns:1fr}.faq-col:first-child{border-right:0}.faq-col{border-bottom:1px solid var(--line)}.faq-col:last-child{border-bottom:0}
.closing{padding:56px 0 65px}.closing-card{display:block;padding:28px 23px}.closing-card h2{font-size:25px}.closing-card .cta-actions{margin-top:20px}
.footer{padding-top:42px}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid>div:first-child{grid-column:1/-1}.copyright{margin-top:27px}.age-dialog{padding:26px 22px}
}
@media(max-width:520px){
.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.toc-item{grid-template-columns:32px 1fr 15px}.toc-item{font-size:13px}.section-heading h2{font-size:27px}
}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* roulang page: category1 */
:root{
 --bg:#f3f7fa;--paper:#fff;--ice:#e9f2f8;--ice-2:#dcebf4;--blue:#4e7fa5;
 --blue-dark:#345d7d;--ink:#183044;--muted:#6b7d8c;--line:#d7e2e9;
 --warm:#a8795f;--radius:16px;--shadow:0 14px 34px rgba(43,73,96,.09);
 --shadow-hover:0 19px 40px rgba(43,73,96,.15);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8}
body.modal-open{overflow:hidden}
a{color:var(--blue-dark);text-decoration:none;transition:color .2s,border-color .2s,background .2s,transform .2s,box-shadow .2s}
a:hover{color:var(--blue);text-decoration:underline;text-underline-offset:4px}
button,input,select{font:inherit}
button{cursor:pointer}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid rgba(78,127,165,.28);outline-offset:3px}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
.site-header{height:84px;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.nav-wrap{height:84px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink);font-weight:800;letter-spacing:-.03em;font-size:18px;white-space:nowrap}
.brand:hover{color:var(--blue-dark);text-decoration:none}
.brand-mark{width:30px;height:30px;border:2px solid var(--blue);border-radius:9px;position:relative;flex:0 0 auto}
.brand-mark:after{content:"";position:absolute;width:8px;height:8px;background:var(--blue);border-radius:50%;left:9px;top:9px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{height:44px;display:flex;align-items:center;color:var(--muted);font-size:14px;border-bottom:2px solid transparent}
.nav-links a:hover,.nav-links a.active{color:var(--blue-dark);border-color:var(--blue);text-decoration:none}
.nav-action{background:var(--blue);color:#fff!important;padding:0 17px;border-radius:10px;border:0!important}
.nav-action:hover{background:var(--blue-dark);color:#fff!important;transform:translateY(-1px)}
.menu-toggle{display:none;background:none;border:0;color:var(--ink);font-size:25px;line-height:1;padding:8px}
.compliance-bar{background:#edf4f7;border-bottom:1px solid var(--line);color:#526a7b;font-size:13px}
.compliance-inner{min-height:43px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.compliance-inner strong{font-weight:700;color:var(--warm)}
.compliance-inner a{font-weight:700;white-space:nowrap}
.page-hero{padding:54px 0 64px;background:linear-gradient(135deg,#f8fbfc 0%,#e7f0f5 100%);border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.page-hero:before{content:"";position:absolute;width:430px;height:430px;border:1px solid rgba(78,127,165,.12);border-radius:50%;right:-145px;top:-280px}
.breadcrumbs{margin:0 0 28px;background:none;padding:0;color:var(--muted);font-size:13px}
.breadcrumbs li,.breadcrumbs li:not(:last-child):after{color:var(--muted)}
.breadcrumbs a{color:var(--muted)}
.breadcrumbs li:last-child{color:var(--blue-dark);font-weight:700}
.hero-copy-panel{padding:8px 12px 8px 0}
.eyebrow,.tag{display:inline-flex;align-items:center;border-radius:99px;padding:4px 11px;color:var(--blue-dark);background:var(--ice);font-size:12px;font-weight:700;letter-spacing:.04em}
h1,h2,h3,p{margin-top:0}
h1{max-width:740px;margin:17px 0 18px;font-size:46px;line-height:1.23;letter-spacing:-.05em;font-weight:800;color:var(--ink)}
.hero-lead{max-width:700px;color:var(--muted);font-size:16px;line-height:1.9;margin-bottom:23px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;color:var(--muted);font-size:13px}
.hero-meta span{padding-right:13px;border-right:1px solid var(--line)}
.hero-meta span:last-child{border:0}
.guide-card{height:100%;padding:28px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);position:relative;overflow:hidden}
.guide-card:after{content:"";position:absolute;right:22px;top:20px;width:56px;height:56px;border-radius:14px;background:var(--ice);opacity:.8}
.guide-label{position:relative;z-index:1;font-size:12px;color:var(--blue-dark);font-weight:800;letter-spacing:.08em}
.guide-number{font-size:38px;line-height:1;margin:14px 0 10px;font-weight:800;letter-spacing:-.05em;color:var(--blue-dark)}
.guide-card h2{font-size:20px;line-height:1.45;margin:0 0 15px}
.guide-list{list-style:none;padding:0;margin:0;border-top:1px solid var(--line)}
.guide-list li{padding:11px 0;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted);display:flex;gap:9px}
.guide-list b{color:var(--blue);font-weight:800}
.section{padding:88px 0}
.section-heading{max-width:720px;margin-bottom:31px}
.section-heading h2{font-size:32px;line-height:1.35;letter-spacing:-.035em;margin-bottom:11px;font-weight:800}
.section-heading p{margin:0;color:var(--muted);font-size:15px}
.filter-shell{padding:17px 18px;background:rgba(255,255,255,.76);border:1px solid var(--line);border-radius:14px;margin-bottom:30px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.filter-scroll{display:flex;gap:8px;overflow-x:auto;white-space:nowrap;padding-bottom:2px}
.filter-pill{display:inline-flex;align-items:center;min-height:36px;padding:6px 13px;border-radius:99px;border:1px solid var(--line);background:#fff;color:var(--muted);font-size:13px;font-weight:700}
.filter-pill:hover,.filter-pill.active{background:var(--ice);border-color:var(--blue);color:var(--blue-dark);text-decoration:none}
.sort-control{display:flex;align-items:center;gap:8px;white-space:nowrap;color:var(--muted);font-size:13px}
.sort-control select{height:39px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--ink);padding:0 30px 0 10px;box-shadow:none}
.sort-control select:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(78,127,165,.12)}
.editorial-grid{display:grid;grid-template-columns:1.24fr .76fr;gap:20px;align-items:start}
.article-stack{display:grid;gap:20px}
.article-card{display:flex;flex-direction:column;min-height:245px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:transform .2s,box-shadow .2s,border-color .2s}
.article-card:hover{transform:translateY(-3px);border-color:#b8cede;box-shadow:var(--shadow-hover);text-decoration:none}
.article-card.featured{min-height:350px;display:grid;grid-template-columns:.9fr 1.1fr}
.article-cover{min-height:132px;padding:22px;display:flex;justify-content:space-between;align-items:flex-start;position:relative;overflow:hidden;background:#dfeef6}
.article-card.featured .article-cover{min-height:100%;padding:30px;background:linear-gradient(145deg,#dcecf5,#edf5f8)}
.article-cover:before{content:"";position:absolute;width:170px;height:170px;border:1px solid rgba(52,93,125,.18);border-radius:50%;right:-54px;bottom:-71px}
.article-cover:after{content:"";position:absolute;width:84px;height:84px;border-radius:15px;border:1px solid rgba(52,93,125,.19);left:25px;bottom:23px;transform:rotate(18deg)}
.cover-no{position:relative;z-index:1;font-size:39px;line-height:1;color:var(--blue-dark);font-weight:800;letter-spacing:-.07em}
.cover-word{position:relative;z-index:1;writing-mode:vertical-rl;font-size:12px;letter-spacing:.15em;color:var(--blue-dark);font-weight:700}
.cover-slate{background:#e9eff3}.cover-slate .cover-no{color:#5b7384}
.cover-soft{background:#e7f1f6}.cover-warm{background:#f2eeeb}.cover-warm .cover-no{color:#92715e}
.article-body{padding:24px 25px 22px;display:flex;flex-direction:column;flex:1}
.article-card.featured .article-body{padding:31px}
.article-topline{display:flex;justify-content:space-between;align-items:center;gap:10px}
.article-card h3{font-size:20px;line-height:1.45;letter-spacing:-.02em;margin:13px 0 9px;color:var(--ink)}
.article-card.featured h3{font-size:26px;line-height:1.35;margin-top:16px}
.article-card p{font-size:14px;line-height:1.8;color:var(--muted);margin:0}
.article-footer{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:17px;color:var(--muted);font-size:12px}
.arrow{font-size:21px;color:var(--blue);line-height:1}
.list-note{margin-top:28px;padding:22px 25px;border-left:3px solid var(--blue);background:var(--ice);border-radius:0 var(--radius) var(--radius) 0;color:var(--muted);font-size:14px}
.list-note strong{color:var(--ink)}
.pagination-wrap{display:flex;align-items:center;justify-content:space-between;margin-top:34px;padding-top:25px;border-top:1px solid var(--line)}
.pagination{margin:0}
.pagination li{margin-right:4px}
.pagination a,.pagination button{border-radius:8px;color:var(--blue-dark);font-size:13px}
.pagination .current{border-radius:8px;background:var(--blue);padding:.1875rem .625rem;color:#fff}
.faq-entry{padding:30px 32px;background:linear-gradient(125deg,#e3f0f6,#f9fbfc);border:1px solid #cbdde7;border-radius:var(--radius);box-shadow:var(--shadow);height:100%}
.faq-entry h2{font-size:24px;line-height:1.4;margin:13px 0 11px}
.faq-entry p{font-size:14px;color:var(--muted);margin-bottom:21px}
.button{min-height:46px;border-radius:11px;padding:11px 19px;display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;margin:0;transition:transform .2s,background .2s,box-shadow .2s}
.button.primary{background:var(--blue);color:#fff}
.button.primary:hover{background:var(--blue-dark);color:#fff;transform:translateY(-2px);text-decoration:none;box-shadow:0 10px 20px rgba(52,93,125,.17)}
.button.secondary{background:#fff;border:1px solid var(--line);color:var(--blue-dark)}
.button.secondary:hover{background:var(--ice);border-color:var(--blue);text-decoration:none}
.rules-section{padding:0 0 88px}
.faq-shell{padding:28px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.faq-shell h2{font-size:28px;line-height:1.4;margin-bottom:20px}
.accordion{margin:0;background:transparent}
.accordion-item,.accordion-item:first-child>:first-child{border:0}
.accordion-title{color:var(--ink);font-size:15px;font-weight:700;padding:19px 38px 19px 13px;border-bottom:1px solid var(--line);line-height:1.55}
.accordion-title:before{color:var(--blue);font-size:20px;right:14px;margin-top:-13px}
.accordion-title:hover,.accordion-title:focus{background:var(--ice);color:var(--blue-dark);text-decoration:none}
.accordion-content{border:0;border-bottom:1px solid var(--line);padding:17px 16px 20px;color:var(--muted);font-size:14px;line-height:1.85}
.footer{border-top:1px solid var(--line);background:#eef4f7;padding:50px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:40px}
.footer h3{font-size:15px;margin:0 0 14px}
.footer p,.footer a,.copyright{font-size:13px;color:var(--muted)}
.footer p{max-width:340px;margin:15px 0 0}
.footer-links{display:grid;gap:7px}
.footer .small{font-size:12px;color:var(--muted)}
.copyright{border-top:1px solid var(--line);margin-top:35px;padding-top:20px}
.age-layer{position:fixed;inset:0;z-index:100;background:rgba(24,48,68,.38);display:flex;align-items:center;justify-content:center;padding:18px}
.age-dialog{max-width:450px;padding:31px;background:#fff;border:1px solid rgba(255,255,255,.75);border-radius:18px;box-shadow:0 25px 65px rgba(19,43,59,.26)}
.age-dialog h2{font-size:25px;line-height:1.35;margin:13px 0 11px}
.age-dialog p{font-size:14px;line-height:1.8;color:var(--muted);margin-bottom:23px}
.age-actions{display:flex;gap:10px;flex-wrap:wrap}
.age-actions .button{flex:1}
@media(max-width:1023px){
 .site-header,.nav-wrap{height:70px}.container{padding:0 20px}.nav-links{gap:17px}
 h1{font-size:40px}.section{padding:70px 0}.page-hero{padding:45px 0 52px}
 .article-card.featured{grid-template-columns:1fr}.article-card.featured .article-cover{min-height:165px}
 .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:767px){
 body{font-size:15px}.container{padding:0 18px}.site-header,.nav-wrap{height:68px}
 .brand{font-size:15px;gap:9px}.brand-mark{width:27px;height:27px}.brand-mark:after{left:8px;top:8px}
 .menu-toggle{display:block}.nav-links{display:none;position:absolute;top:68px;left:-18px;right:-18px;padding:11px 18px 18px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 14px 22px rgba(43,73,96,.1);align-items:stretch;gap:0}
 .nav-links.is-open{display:flex;flex-direction:column}.nav-links a{height:48px;border-bottom:1px solid var(--line)}.nav-links a.active{border-left:3px solid var(--blue);border-bottom-color:var(--line);padding-left:11px}.nav-links .nav-action{margin-top:10px;justify-content:center;border-bottom:0!important}
 .compliance-inner{min-height:48px;align-items:flex-start;justify-content:center;flex-direction:column;gap:0;padding:7px 0;font-size:12px;line-height:1.45}.compliance-inner a{display:none}
 .page-hero{padding:32px 0 42px}.breadcrumbs{margin-bottom:18px}.grid-margin-x{margin-left:-.5rem;margin-right:-.5rem}
 h1{font-size:33px;line-height:1.28;margin-top:13px}.hero-lead{font-size:15px}.hero-copy-panel{padding:0}.guide-card{margin-top:12px;padding:24px}
 .section{padding:58px 0}.section-heading{margin-bottom:23px}.section-heading h2{font-size:27px}
 .filter-shell{display:block;padding:13px;margin-bottom:20px}.filter-scroll{margin-bottom:13px}.sort-control{justify-content:space-between}.sort-control select{flex:1}
 .editorial-grid{grid-template-columns:1fr;gap:18px}.article-stack{gap:18px}.article-card,.article-card.featured{min-height:0}.article-card.featured h3{font-size:22px}.article-body,.article-card.featured .article-body{padding:22px}.article-cover{min-height:125px}.article-card.featured .article-cover{min-height:145px}
 .pagination-wrap{align-items:flex-start;flex-direction:column;gap:15px}.faq-entry{padding:25px}.rules-section{padding-bottom:58px}.faq-shell{padding:19px}.faq-shell h2{font-size:24px}
 .footer{padding:40px 0 23px}.footer-grid{grid-template-columns:1fr;gap:28px}.copyright{margin-top:27px}.age-dialog{padding:26px 22px}.age-actions{flex-direction:column}.age-actions .button{width:100%}
}
@media(max-width:520px){
 .hero-meta{display:grid;gap:5px}.hero-meta span{border:0;padding:0}.guide-number{font-size:34px}.article-topline{align-items:flex-start}.tag{font-size:11px}.article-footer{align-items:flex-start;flex-direction:column;gap:4px}.pagination{white-space:nowrap}.pagination li{margin-right:1px}.pagination a,.pagination button{padding:.1875rem .45rem}
}
@media(prefers-reduced-motion:reduce){
 *,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}
}