/* roulang page: index */
:root{
      --blue:#2563eb;--blue-dark:#1746ae;--ink:#17233d;--muted:#68758d;
      --paper:#f7faff;--soft:#eaf2ff;--line:#dce6f4;--white:#fff;
      --cyan:#dff6f5;--warm:#fff5df;--radius:20px;--shadow:0 16px 40px rgba(32,72,126,.10);
      --small-shadow:0 8px 22px rgba(32,72,126,.08)
    }
    *,*:before,*:after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(1200px,calc(100% - 40px));margin:0 auto}
    .topbar{position:relative;z-index:10;padding:22px 0 0}
    .nav-shell{display:flex;align-items:center;gap:24px;padding:12px 16px 12px 22px;background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:999px;box-shadow:var(--small-shadow)}
    .brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;white-space:nowrap}
    .brand-mark{width:34px;height:34px;border-radius:12px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:900}
    .brand span:last-child{letter-spacing:.2px}
    .nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
    .nav-links a{padding:8px 14px;border-radius:999px;color:var(--muted);font-size:14px}
    .nav-links a:hover,.nav-links a.active{background:var(--soft);color:var(--blue);font-weight:700}
    .nav-cta,.button-primary{background:var(--blue);color:#fff!important;border:1px solid var(--blue);border-radius:12px;padding:12px 20px;display:inline-flex;align-items:center;justify-content:center;font-weight:700;box-shadow:0 8px 18px rgba(37,99,235,.18)}
    .nav-cta:hover,.button-primary:hover{background:var(--blue-dark);border-color:var(--blue-dark);transform:translateY(-2px)}
    .menu-toggle{display:none;margin-left:auto;border:0;background:var(--soft);color:var(--blue);border-radius:10px;padding:8px 12px}
    .hero{padding:76px 0 88px;position:relative;overflow:hidden}
    .hero:before{content:"";position:absolute;width:420px;height:420px;right:-170px;top:20px;border-radius:50%;background:#e4efff;z-index:-1}
    .hero-grid{display:grid;grid-template-columns:1fr 1.06fr;gap:70px;align-items:center}
    .eyebrow,.section-kicker{color:var(--blue);font-size:13px;font-weight:800;letter-spacing:2px;text-transform:uppercase}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(38px,5vw,64px);line-height:1.16;letter-spacing:-2px;margin:15px 0 24px;max-width:650px}
    h2{font-size:clamp(29px,3.5vw,42px);line-height:1.25;letter-spacing:-1px;margin:10px 0 16px}
    h3{font-size:20px;line-height:1.4;margin:0 0 8px}
    .hero-copy>p{font-size:18px;color:var(--muted);max-width:600px;margin-bottom:30px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .button-secondary{display:inline-flex;align-items:center;justify-content:center;padding:12px 20px;border:1px solid #b9cceb;color:var(--blue);background:#fff;border-radius:12px;font-weight:700}
    .button-secondary:hover{border-color:var(--blue);background:var(--soft);transform:translateY(-2px)}
    .hero-note{display:flex;gap:22px;flex-wrap:wrap;margin-top:27px;color:var(--muted);font-size:13px}
    .hero-note strong{display:block;color:var(--ink);font-size:20px;line-height:1.2}
    .hero-board{background:#fff;border:1px solid var(--line);border-radius:26px;padding:20px;box-shadow:var(--shadow);transform:rotate(1deg)}
    .board-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
    .board-title{font-size:18px;font-weight:800}.live-dot{color:#159b85;font-size:13px}
    .feature-cover{min-height:210px;border-radius:18px;background:linear-gradient(135deg,#cfe3ff,#ecf7ff 56%,#c8eeea);padding:25px;display:flex;flex-direction:column;justify-content:flex-end;position:relative;overflow:hidden}
    .feature-cover:after{content:"精选";position:absolute;right:20px;top:20px;background:#fff;color:var(--blue);padding:5px 10px;border-radius:999px;font-size:12px;font-weight:800}
    .feature-cover strong{font-size:27px;max-width:280px;line-height:1.3}
    .feature-cover small{color:#50647d;margin-top:8px}
    .board-list{display:grid;gap:10px;margin-top:16px}
    .board-item{display:flex;align-items:center;gap:12px;padding:11px 12px;border:1px solid var(--line);border-radius:13px}
    .num{width:27px;height:27px;display:grid;place-items:center;border-radius:8px;background:var(--soft);color:var(--blue);font-weight:800;font-size:13px}
    .board-item span{font-size:14px}.board-item small{margin-left:auto;color:var(--muted)}
    .section{padding:90px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:38px}.section-head p{max-width:500px;color:var(--muted);margin-bottom:0}
    .story{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .pain-grid{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:0;border:1px solid var(--line);border-radius:22px;overflow:hidden;background:#fff;box-shadow:var(--small-shadow)}
    .pain-item{padding:30px;border-right:1px solid var(--line);position:relative}.pain-item:last-child{border:0}.pain-item:before{content:attr(data-no);color:var(--blue);font-size:13px;font-weight:800}.pain-item h3{margin-top:18px}.pain-item p{color:var(--muted);font-size:14px;margin-bottom:0}
    .solution{background:#eef5ff}
    .solution-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:22px}
    .solution-main,.step-card{background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--small-shadow)}
    .solution-main{padding:38px;display:flex;flex-direction:column;justify-content:space-between;min-height:310px}
    .solution-main p,.step-card p{color:var(--muted);font-size:15px}.solution-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:25px}.tag{display:inline-block;padding:5px 11px;border-radius:999px;background:var(--soft);color:var(--blue);font-size:12px;font-weight:700}
    .steps{display:grid;gap:22px}.step-card{padding:25px}.step-card:nth-child(2){margin-left:38px;background:#f9fffe}.step-icon{color:var(--blue);font-size:13px;font-weight:800;margin-bottom:13px}
    .reward-panel{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px;align-items:stretch}.reward-card{padding:25px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--small-shadow)}.reward-card.featured{background:var(--blue);color:#fff;transform:translateY(-12px)}.reward-card.featured p,.reward-card.featured .muted{color:#dce8ff}.reward-card p{font-size:14px;color:var(--muted)}.reward-label{font-size:12px;font-weight:800;color:var(--blue);margin-bottom:14px}.featured .reward-label{color:#cfe0ff}.reward-card strong{display:block;font-size:25px;margin-bottom:8px}
    .progress-panel{background:var(--ink);color:#fff;border-radius:24px;padding:38px;display:grid;grid-template-columns:.85fr 1.15fr;gap:55px;align-items:center}.progress-panel p{color:#b8c7de}.progress-track{height:12px;border-radius:999px;background:#344968;overflow:hidden;margin:20px 0 12px}.progress-track span{display:block;width:72%;height:100%;background:#67cfc4;border-radius:inherit}.progress-meta{display:flex;justify-content:space-between;color:#c5d4e8;font-size:13px}
    .news-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:24px}.news-list{background:#fff;border:1px solid var(--line);border-radius:20px;padding:8px 28px;box-shadow:var(--small-shadow)}.news-row{display:flex;gap:16px;align-items:center;padding:21px 0;border-bottom:1px solid var(--line)}.news-row:last-child{border:0}.news-row a{font-weight:700;flex:1}.news-row a:hover{color:var(--blue)}.news-row time{font-size:12px;color:var(--muted);white-space:nowrap}.news-feature{padding:30px;border-radius:20px;background:var(--warm);border:1px solid #f1dfb5}.news-feature p{color:#776d59;font-size:14px}.news-feature a{color:var(--blue);font-weight:800}
    .quote-row{display:grid;grid-template-columns:1.15fr .85fr 1fr;gap:16px}.quote{background:#fff;border:1px solid var(--line);border-radius:18px;padding:25px;box-shadow:var(--small-shadow)}.quote:first-child{transform:translateY(14px)}.quote p{font-size:15px;margin:16px 0;color:#43516a}.quote small{color:var(--muted)}
    .faq-wrap{max-width:850px;margin:auto}.faq-item{background:#fff;border:1px solid var(--line);border-radius:15px;margin-bottom:12px;overflow:hidden}.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left;background:#fff;border:0;padding:20px 24px;color:var(--ink);font-weight:800}.faq-q:hover{background:var(--soft)}.faq-q:focus{outline:3px solid #bdd4ff}.faq-q span:last-child{color:var(--blue);font-size:22px}.faq-a{display:none;padding:0 24px 21px;color:var(--muted);font-size:14px}.faq-item.open .faq-a{display:block}.faq-item.open .faq-q{color:var(--blue)}
    .cta{padding:30px 0 100px}.cta-box{background:#dceaff;border:1px solid #c6daf8;border-radius:25px;padding:55px 65px;display:flex;align-items:center;justify-content:space-between;gap:30px}.cta-box p{color:#526985;max-width:580px;margin-bottom:0}
    footer{background:#203452;color:#d9e5f5;padding:48px 0 24px}.footer-top{display:flex;justify-content:space-between;gap:30px;align-items:start}.footer-brand{color:#fff;font-size:19px;font-weight:800}.footer-brand p{color:#aebed2;font-size:13px;font-weight:400;max-width:330px;margin-top:12px}.footer-links{display:flex;gap:25px;flex-wrap:wrap;font-size:14px}.footer-links a:hover{color:#fff}.copyright{border-top:1px solid #3a4d69;margin-top:36px;padding-top:18px;color:#9eb0c8;font-size:12px;display:flex;justify-content:space-between;gap:20px}
    @media(max-width:1024px){.hero-grid{gap:35px}.section{padding:72px 0}.pain-grid{grid-template-columns:1fr}.pain-item{border-right:0;border-bottom:1px solid var(--line)}}
    @media(max-width:768px){.nav-shell{border-radius:18px;flex-wrap:wrap}.menu-toggle{display:block}.nav-links{display:none;flex-basis:100%;flex-direction:column;align-items:stretch;margin:4px 0 0}.nav-links.open{display:flex}.nav-links a{text-align:center}.nav-cta{width:100%}.hero{padding:55px 0 65px}.hero-grid,.solution-layout,.news-layout,.progress-panel{grid-template-columns:1fr}.hero-board{transform:none}.section-head{display:block}.section-head p{margin-top:14px}.reward-panel,.quote-row{grid-template-columns:1fr}.reward-card.featured,.quote:first-child{transform:none}.cta-box{display:block;padding:38px 28px}.cta-box .button-primary{margin-top:24px}.footer-top{display:block}.footer-links{margin-top:25px}}
    @media(max-width:520px){.container{width:min(100% - 28px,1200px)}h1{font-size:37px;letter-spacing:-1px}.hero-copy>p{font-size:16px}.hero-actions a{width:100%}.hero-note{gap:14px}.solution-main{padding:27px}.progress-panel{padding:28px 23px}.news-list{padding:5px 18px}.news-row{align-items:start;flex-wrap:wrap;gap:7px}.news-row a{flex-basis:100%;order:2}.news-row time{margin-left:auto}.copyright{display:block}.copyright span{display:block;margin-top:8px}}

/* roulang page: category1 */
:root{
 --blue:#2563eb;--blue-dark:#1746ae;--ink:#17233d;--muted:#68758d;
 --paper:#f7faff;--soft:#eaf2ff;--line:#dce6f4;--white:#fff;
 --cyan:#dff6f5;--warm:#fff5df;--radius:20px;
 --shadow:0 16px 40px rgba(32,72,126,.10);
 --small-shadow:0 8px 22px rgba(32,72,126,.08)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.75}
body,button,input{font-synthesis:none}
a{color:inherit;text-decoration:none;transition:.25s ease}
a:focus,button:focus,input:focus{outline:3px solid rgba(37,99,235,.22);outline-offset:3px}
img{max-width:100%;display:block}
button,input{font:inherit}
button{cursor:pointer}
h1,h2,h3,p{margin-top:0}
h1,h2,h3{line-height:1.25;letter-spacing:-.02em}
h1{font-size:clamp(2.2rem,5vw,4rem);margin-bottom:20px}
h2{font-size:clamp(1.8rem,3vw,2.7rem);margin-bottom:14px}
h3{font-size:1.2rem;margin-bottom:10px}
.container{width:min(1200px,calc(100% - 40px));margin:0 auto}
.topbar{position:relative;z-index:10;padding:22px 0 0}
.nav-shell{display:flex;align-items:center;gap:24px;padding:12px 16px 12px 22px;background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:999px;box-shadow:var(--small-shadow)}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;white-space:nowrap}
.brand-mark{width:34px;height:34px;border-radius:12px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:900}
.brand span:last-child{letter-spacing:.2px}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{padding:8px 14px;border-radius:999px;color:var(--muted);font-size:14px}
.nav-links a:hover,.nav-links a.active{background:var(--soft);color:var(--blue);font-weight:700}
.nav-links .nav-cta{background:var(--blue);color:#fff!important;border:1px solid var(--blue);padding:10px 17px}
.nav-links .nav-cta:hover{background:var(--blue-dark);border-color:var(--blue-dark);transform:translateY(-2px)}
.menu-toggle{display:none;margin-left:auto;border:0;background:var(--soft);color:var(--blue);border-radius:10px;padding:8px 12px}
.page-hero{padding:72px 0 52px;position:relative;overflow:hidden}
.page-hero:after{content:"";position:absolute;right:-100px;top:25px;width:360px;height:240px;border-radius:50%;background:#e3efff;z-index:-1}
.crumb{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:22px}
.crumb a:hover{color:var(--blue)}
.hero-title{max-width:820px}
.hero-title p{max-width:700px;color:var(--muted);font-size:18px;margin-bottom:0}
.topic-strip{display:flex;gap:10px;flex-wrap:wrap;margin-top:30px}
.topic-strip a,.tag{display:inline-flex;align-items:center;padding:6px 13px;border-radius:999px;background:var(--soft);color:var(--blue);font-size:13px;font-weight:700;border:1px solid transparent}
.topic-strip a:hover,.topic-strip a.active{background:var(--blue);color:#fff}
.section{padding:66px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:30px}
.section-head p{max-width:520px;color:var(--muted);margin-bottom:0}
.guide-layout{display:grid;grid-template-columns:240px 1fr;gap:28px;align-items:start}
.index-card{position:sticky;top:22px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px;box-shadow:var(--small-shadow)}
.index-card small{display:block;color:var(--muted);font-size:12px;margin:2px 10px 12px}
.index-link{display:flex;justify-content:space-between;align-items:center;padding:12px 13px;border-radius:12px;color:var(--muted);font-size:14px;margin-bottom:4px}
.index-link:hover,.index-link.active{background:var(--soft);color:var(--blue);font-weight:700}
.index-link b{font-size:12px;color:inherit}
.featured-guide{display:grid;grid-template-columns:1.1fr .9fr;gap:26px;background:#fff;border:1px solid var(--line);border-radius:23px;padding:26px;box-shadow:var(--shadow);margin-bottom:18px}
.featured-visual{min-height:245px;border-radius:17px;padding:25px;background:linear-gradient(135deg,#cde1ff,#edf7ff 60%,#d3f1ed);display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}
.featured-visual:before{content:"精选入口";position:absolute;right:18px;top:18px;padding:5px 10px;background:rgba(255,255,255,.88);border-radius:999px;color:var(--blue);font-size:12px;font-weight:800}
.visual-number{font-size:62px;line-height:1;color:rgba(37,99,235,.25);font-weight:900}
.visual-bottom strong{display:block;font-size:24px;line-height:1.3}
.visual-bottom span{color:#50647d;font-size:13px}
.featured-copy{display:flex;flex-direction:column;justify-content:center;padding:4px 8px}
.featured-copy .tag{align-self:flex-start;margin-bottom:17px}
.featured-copy p{color:var(--muted);font-size:15px}
.meta-line{display:flex;gap:14px;flex-wrap:wrap;color:var(--muted);font-size:12px;margin:14px 0 22px}
.meta-line span+span{padding-left:14px;border-left:1px solid var(--line)}
.button-primary,.button-secondary{display:inline-flex;align-items:center;justify-content:center;border-radius:12px;padding:11px 19px;font-weight:700;transition:.25s ease}
.button-primary{background:var(--blue);color:#fff;border:1px solid var(--blue);box-shadow:0 8px 18px rgba(37,99,235,.18)}
.button-primary:hover{background:var(--blue-dark);border-color:var(--blue-dark);transform:translateY(-2px)}
.button-secondary{background:#fff;color:var(--blue);border:1px solid #b9cceb}
.button-secondary:hover{border-color:var(--blue);background:var(--soft);transform:translateY(-2px)}
.content-list{background:#fff;border:1px solid var(--line);border-radius:20px;padding:8px 25px;box-shadow:var(--small-shadow)}
.content-row{display:grid;grid-template-columns:54px 1fr auto;gap:16px;align-items:center;padding:19px 0;border-bottom:1px solid var(--line)}
.content-row:last-child{border-bottom:0}
.row-no{width:38px;height:38px;border-radius:12px;background:var(--soft);color:var(--blue);display:grid;place-items:center;font-weight:800;font-size:13px}
.row-main h3{font-size:17px;margin-bottom:4px}
.row-main h3 a:hover{color:var(--blue)}
.row-main p{font-size:13px;color:var(--muted);margin-bottom:6px}
.row-tags{display:flex;gap:7px;flex-wrap:wrap}
.row-tags .tag{font-size:11px;padding:3px 8px}
.row-time{color:var(--muted);font-size:12px;white-space:nowrap}
.filter-panel{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:17px 20px;background:#eef5ff;border:1px solid var(--line);border-radius:17px;margin-bottom:17px}
.filter-label{font-size:14px;font-weight:700;color:var(--ink)}
.filter-buttons{display:flex;gap:7px;flex-wrap:wrap}
.filter-button{border:1px solid #c4d5ef;background:#fff;color:var(--muted);border-radius:999px;padding:6px 12px;font-size:12px;transition:.2s}
.filter-button:hover,.filter-button.active{background:var(--blue);border-color:var(--blue);color:#fff}
.note-panel{margin-top:30px;padding:24px 27px;border-radius:18px;background:var(--warm);border:1px solid #f1dfb5}
.note-panel strong{display:block;margin-bottom:5px}
.note-panel p{color:#776d59;font-size:14px;margin-bottom:0}
.faq-wrap{max-width:900px;margin:auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:15px;margin-bottom:12px;overflow:hidden;box-shadow:0 4px 12px rgba(32,72,126,.03)}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left;background:#fff;border:0;padding:18px 21px;color:var(--ink);font-weight:700}
.faq-q:hover{background:var(--soft);color:var(--blue)}
.faq-q span:last-child{font-size:22px;color:var(--blue);transition:.2s}
.faq-a{display:none;padding:0 21px 18px;color:var(--muted);font-size:14px}
.faq-item.open .faq-a{display:block}
.faq-item.open .faq-q span:last-child{transform:rotate(45deg)}
.cta{padding:72px 0}
.cta-panel{display:flex;justify-content:space-between;align-items:center;gap:30px;padding:42px 48px;border-radius:24px;background:#dfeeff;border:1px solid #cbdff8;box-shadow:var(--small-shadow)}
.cta-panel p{color:var(--muted);max-width:610px;margin-bottom:0}
footer{background:#1e3154;color:#dce7f7;padding:42px 0 22px;margin-top:20px}
.footer-top{display:flex;justify-content:space-between;gap:35px;padding-bottom:30px;border-bottom:1px solid rgba(220,231,247,.18)}
.footer-brand{font-size:20px;font-weight:800}
.footer-brand p{font-size:13px;font-weight:400;color:#aebed5;margin:8px 0 0;max-width:380px}
.footer-links{display:flex;gap:20px;flex-wrap:wrap;align-items:flex-start}
.footer-links a{color:#c8d7eb;font-size:13px}
.footer-links a:hover{color:#fff}
.copyright{display:flex;justify-content:space-between;gap:20px;padding-top:18px;color:#9eb0c9;font-size:12px}
@media(max-width:1024px){
 .guide-layout{grid-template-columns:200px 1fr}
 .featured-guide{grid-template-columns:1fr .95fr}
}
@media(max-width:768px){
 .container{width:min(100% - 32px,620px)}
 .topbar{padding-top:14px}
 .nav-shell{border-radius:18px;padding:11px 14px}
 .menu-toggle{display:block}
 .nav-links{display:none;position:absolute;left:16px;right:16px;top:70px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
 .nav-links.open{display:flex}
 .nav-links a{padding:12px 14px;border-radius:10px}
 .page-hero{padding:54px 0 35px}
 .section{padding:48px 0}
 .section-head{display:block;margin-bottom:24px}
 .section-head p{margin-top:12px}
 .guide-layout{grid-template-columns:1fr}
 .index-card{position:static;display:flex;gap:6px;overflow-x:auto;padding:10px}
 .index-card small{display:none}
 .index-link{white-space:nowrap;margin:0}
 .featured-guide{grid-template-columns:1fr;padding:17px}
 .featured-visual{min-height:200px}
 .filter-panel{display:block}
 .filter-label{display:block;margin-bottom:10px}
 .content-row{grid-template-columns:42px 1fr}
 .row-time{grid-column:2}
 .cta-panel{display:block;padding:32px 25px}
 .cta-panel .button-primary{margin-top:23px}
 .footer-top{display:block}
 .footer-links{margin-top:24px}
}
@media(max-width:520px){
 h1{font-size:2.25rem}
 h2{font-size:1.8rem}
 .hero-title p{font-size:16px}
 .content-list{padding:5px 16px}
 .content-row{gap:11px;padding:17px 0}
 .row-main h3{font-size:15px}
 .row-main p{font-size:12px}
 .copyright{display:block}
 .copyright span{display:block;margin-top:5px}
}

/* roulang page: category2 */
:root{
      --blue:#2563eb;
      --blue-dark:#1746ae;
      --ink:#17233d;
      --muted:#68758d;
      --paper:#f7faff;
      --soft:#eaf2ff;
      --line:#dce6f4;
      --white:#fff;
      --cyan:#dff6f5;
      --warm:#fff5df;
      --radius:20px;
      --shadow:0 16px 40px rgba(32,72,126,.10);
      --small-shadow:0 8px 22px rgba(32,72,126,.08)
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    a:focus,button:focus,input:focus{outline:3px solid rgba(37,99,235,.22);outline-offset:3px}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{cursor:pointer}
    h1,h2,h3,h4,p{margin-top:0}
    h1,h2,h3,h4{line-height:1.3;letter-spacing:-.02em}
    h1{font-size:clamp(2.2rem,5vw,4rem);margin-bottom:20px}
    h2{font-size:clamp(1.8rem,3vw,2.65rem);margin-bottom:14px}
    h3{font-size:1.2rem;margin-bottom:10px}
    .container{width:min(1200px,calc(100% - 40px));margin:0 auto}
    .topbar{position:relative;z-index:10;padding:22px 0 0}
    .nav-shell{display:flex;align-items:center;gap:24px;padding:12px 16px 12px 22px;background:rgba(255,255,255,.95);border:1px solid var(--line);border-radius:999px;box-shadow:var(--small-shadow)}
    .brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;white-space:nowrap}
    .brand-mark{width:34px;height:34px;border-radius:12px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:900}
    .brand span:last-child{letter-spacing:.2px}
    .nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
    .nav-links a{padding:8px 14px;border-radius:999px;color:var(--muted);font-size:14px}
    .nav-links a:hover,.nav-links a.active{background:var(--soft);color:var(--blue);font-weight:700}
    .nav-cta,.button-primary{background:var(--blue);color:#fff!important;border:1px solid var(--blue);border-radius:12px;padding:12px 20px;display:inline-flex;align-items:center;justify-content:center;font-weight:700;box-shadow:0 8px 18px rgba(37,99,235,.18)}
    .nav-cta:hover,.button-primary:hover{background:var(--blue-dark);border-color:var(--blue-dark);transform:translateY(-2px)}
    .menu-toggle{display:none;margin-left:auto;border:0;background:var(--soft);color:var(--blue);border-radius:10px;padding:8px 12px}
    .hero-strip{padding:70px 0 56px;background:#edf5ff;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
    .hero-strip:after{content:"";position:absolute;width:300px;height:300px;border-radius:50%;right:5%;top:-180px;background:#dcecff}
    .hero-inner{position:relative;z-index:1;display:flex;justify-content:space-between;align-items:end;gap:40px}
    .hero-copy{max-width:760px}
    .eyebrow,.section-kicker{color:var(--blue);font-size:13px;font-weight:800;letter-spacing:2px}
    .hero-copy p{color:var(--muted);font-size:18px;max-width:700px;margin-bottom:0}
    .hero-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
    .tag,.status{display:inline-flex;align-items:center;padding:6px 12px;border-radius:999px;background:var(--soft);color:var(--blue);font-size:12px;font-weight:700}
    .status{background:#e7f8f3;color:#16806b}
    .status.new{background:var(--warm);color:#9a6812}
    .index-bar{padding:24px 0;border-bottom:1px solid var(--line);background:#fff}
    .index-inner{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
    .index-label{font-weight:800;margin-right:6px}
    .filter-list{display:flex;gap:8px;flex-wrap:wrap}
    .filter-list button{border:1px solid var(--line);background:#fff;color:var(--muted);border-radius:999px;padding:8px 16px;font-size:13px;transition:.25s}
    .filter-list button:hover,.filter-list button.active{background:var(--blue);color:#fff;border-color:var(--blue)}
    .update-main{padding:86px 0 95px}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px}
    .section-head p{max-width:520px;color:var(--muted);margin-bottom:0}
    .update-layout{display:grid;grid-template-columns:260px 1fr;gap:34px;align-items:start}
    .side-index{position:sticky;top:24px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--small-shadow)}
    .side-index h3{font-size:16px}
    .side-index a{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);color:var(--muted);font-size:14px}
    .side-index a:last-child{border-bottom:0}
    .side-index a:hover{color:var(--blue);padding-left:5px}
    .side-index span{color:var(--blue);font-weight:800}
    .content-area{min-width:0}
    .featured-update{display:grid;grid-template-columns:1.05fr .95fr;gap:0;background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:var(--shadow);margin-bottom:24px}
    .feature-visual{min-height:290px;padding:30px;background:linear-gradient(135deg,#d8e9ff,#eff8ff 62%,#d9f4f0);position:relative;display:flex;flex-direction:column;justify-content:flex-end}
    .feature-visual:before{content:"01";position:absolute;top:24px;left:30px;color:rgba(37,99,235,.35);font-size:54px;font-weight:900}
    .visual-lines{position:absolute;right:28px;top:42px;width:145px;display:grid;gap:9px}
    .visual-lines i{height:8px;border-radius:20px;background:rgba(37,99,235,.18)}
    .visual-lines i:nth-child(2){width:78%}.visual-lines i:nth-child(3){width:58%}
    .feature-visual strong{font-size:28px;line-height:1.3;max-width:330px}
    .feature-visual small{margin-top:10px;color:#58718d}
    .feature-info{padding:34px}
    .feature-info p{color:var(--muted);font-size:15px}
    .item-link{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:800}
    .item-link:hover{gap:13px;color:var(--blue-dark)}
    .compact-list{background:#fff;border:1px solid var(--line);border-radius:20px;padding:6px 28px;box-shadow:var(--small-shadow)}
    .update-row{display:grid;grid-template-columns:64px 1fr auto;gap:18px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line)}
    .update-row:last-child{border-bottom:0}
    .row-number{width:44px;height:44px;border-radius:14px;background:var(--soft);display:grid;place-items:center;color:var(--blue);font-weight:900}
    .row-main h3{font-size:17px;margin-bottom:4px}
    .row-main p{color:var(--muted);font-size:13px;margin:0}
    .row-side{text-align:right;white-space:nowrap}
    .row-side time{display:block;color:var(--muted);font-size:12px;margin-bottom:6px}
    .info-band{padding:72px 0;background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .band-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
    .band-copy p{color:var(--muted);max-width:600px}
    .matrix{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .matrix-item{padding:18px;background:var(--paper);border:1px solid var(--line);border-radius:15px}
    .matrix-item strong{display:block;color:var(--blue);font-size:22px}
    .matrix-item span{font-size:13px;color:var(--muted)}
    .faq-section{padding:88px 0}
    .faq-wrap{max-width:860px;margin:auto}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:15px;margin-bottom:12px;overflow:hidden;box-shadow:0 5px 15px rgba(32,72,126,.04)}
    .faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left;background:#fff;border:0;padding:19px 22px;color:var(--ink);font-weight:800}
    .faq-q:hover{background:var(--soft)}
    .faq-q .plus{color:var(--blue);font-size:22px;line-height:1;transition:.25s}
    .faq-answer{display:none;padding:0 22px 20px;color:var(--muted);font-size:14px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .plus{transform:rotate(45deg)}
    .cta{padding:72px 0;background:#e9f2ff}
    .cta-box{display:flex;justify-content:space-between;align-items:center;gap:30px;padding:42px 48px;background:#fff;border:1px solid #cbdcf5;border-radius:23px;box-shadow:var(--shadow)}
    .cta-box p{color:var(--muted);margin:0;max-width:620px}
    footer{padding:48px 0 24px;background:#233553;color:#dce6f4}
    .footer-top{display:flex;justify-content:space-between;gap:40px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.15)}
    .footer-brand{font-size:20px;font-weight:800}
    .footer-brand p{font-size:13px;color:#aebdd2;font-weight:400;margin:8px 0 0;max-width:340px}
    .footer-links{display:flex;gap:18px;flex-wrap:wrap;align-items:start}
    .footer-links a{font-size:14px;color:#dce6f4}
    .footer-links a:hover{color:#fff;text-decoration:underline}
    .copyright{display:flex;justify-content:space-between;gap:20px;padding-top:22px;color:#9eafc8;font-size:12px}
    @media(max-width:1024px){
      .hero-inner{display:block}.hero-copy{max-width:850px}
      .hero-strip{padding-top:58px}.update-layout{grid-template-columns:210px 1fr}
      .featured-update{grid-template-columns:1fr 1fr}.cta-box{padding:36px}
    }
    @media(max-width:768px){
      .container{width:min(100% - 32px,620px)}
      .topbar{padding-top:14px}.nav-shell{border-radius:18px;padding:10px 14px 10px 16px}
      .menu-toggle{display:block}.nav-links{display:none;width:100%;margin:4px 0 0;flex-direction:column;align-items:stretch;gap:4px}
      .nav-shell.menu-open{flex-wrap:wrap}.nav-shell.menu-open .nav-links{display:flex}
      .nav-links a{padding:12px 14px;border-radius:10px}.nav-cta{text-align:center}
      .hero-strip{padding:52px 0 42px}.hero-copy p{font-size:16px}
      .update-main,.faq-section{padding:64px 0}.section-head{display:block}.section-head p{margin-top:15px}
      .update-layout,.band-grid{grid-template-columns:1fr;gap:24px}.side-index{position:static}
      .side-index nav{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}
      .featured-update{grid-template-columns:1fr}.feature-visual{min-height:230px}
      .info-band{padding:58px 0}.cta-box{display:block;padding:30px 24px}.cta-box .button-primary{margin-top:24px}
      .footer-top,.copyright{display:block}.footer-links{margin-top:26px}.copyright span{display:block;margin-top:8px}
    }
    @media(max-width:520px){
      h1{font-size:2.25rem}.hero-meta{gap:7px}.index-inner{align-items:flex-start}
      .filter-list{width:100%;overflow:auto;flex-wrap:nowrap;padding-bottom:4px}
      .filter-list button{white-space:nowrap}.side-index nav{grid-template-columns:1fr}
      .feature-info{padding:26px 22px}.compact-list{padding:4px 18px}.update-row{grid-template-columns:44px 1fr;gap:12px}
      .row-side{grid-column:2;text-align:left}.matrix{grid-template-columns:1fr}
    }