/* roulang page: index */
:root{
      --blue:#1769aa;--blue-dark:#0d4678;--blue-soft:#eaf5fc;--cyan:#39a9c7;
      --ink:#183247;--muted:#6d8291;--line:#dce8ef;--paper:#fff;--bg:#f5f9fb;
      --warm:#fbfcfa;--radius:18px;--radius-sm:11px;
      --shadow:0 14px 38px rgba(27,78,108,.10);--shadow-hover:0 20px 46px rgba(27,78,108,.17);
      --container:1180px;
    }
    *,*:before,*:after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.75}
    a{color:var(--blue);text-decoration:none;transition:.2s ease}
    a:hover{color:var(--blue-dark)}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid rgba(57,169,199,.42);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
    .topbar{min-height:76px;display:flex;align-items:center;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;color:var(--ink);font-weight:800;letter-spacing:-.03em;white-space:nowrap}
    .brand-mark{width:38px;height:38px;border-radius:12px;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:18px;box-shadow:0 7px 16px rgba(23,105,170,.24)}
    .brand-text{font-size:17px}
    .main-nav{margin-left:auto;display:flex;align-items:center;gap:6px}
    .main-nav a{padding:9px 13px;border-radius:9px;color:var(--muted);font-size:14px}
    .main-nav a:hover,.main-nav a.active{background:var(--blue-soft);color:var(--blue);font-weight:700}
    .header-action{margin-left:8px}
    .search-link{font-size:14px;color:var(--muted);padding:9px}
    .menu-button{display:none;border:1px solid var(--line);background:#fff;border-radius:9px;padding:7px 10px;color:var(--blue)}
    .button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:10px;border:1px solid transparent;font-weight:700;font-size:14px;transition:.22s ease}
    .button.primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(23,105,170,.18)}
    .button.primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
    .button.secondary{background:#fff;color:var(--blue);border-color:#b9d6e5}
    .button.secondary:hover{border-color:var(--blue);background:var(--blue-soft);transform:translateY(-2px)}
    .button.text{min-height:auto;padding:5px 0;color:var(--blue);background:transparent}
    .hero{padding:78px 0 72px;background:var(--warm);border-bottom:1px solid var(--line);overflow:hidden}
    .hero-grid{display:grid;grid-template-columns:1fr 1.08fr;gap:70px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:800;font-size:13px;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--cyan)}
    h1,h2,h3{margin:0;color:var(--ink);line-height:1.25;letter-spacing:-.035em}
    h1{font-size:clamp(34px,4.8vw,61px);max-width:650px;margin:17px 0 22px}
    h2{font-size:clamp(26px,3vw,38px)}
    h3{font-size:19px}
    .hero-copy p{max-width:590px;color:var(--muted);font-size:17px;margin:0 0 28px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero-meta{display:flex;gap:18px;flex-wrap:wrap;margin-top:27px;color:var(--muted);font-size:13px}
    .hero-meta span{display:flex;align-items:center;gap:7px}
    .dot{width:8px;height:8px;background:#38a66d;border-radius:50%;display:inline-block}
    .stage{position:relative;min-height:390px;padding:28px;background:#eaf5fa;border:1px solid #cfe4ee;border-radius:26px;box-shadow:var(--shadow)}
    .stage:before,.stage:after{content:"";position:absolute;border:1px solid #b9dce9;border-radius:50%;pointer-events:none}
    .stage:before{width:230px;height:230px;right:-80px;top:-95px}
    .stage:after{width:150px;height:150px;left:-75px;bottom:-58px}
    .stage-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;position:relative;z-index:1}
    .stage-title{font-weight:800}.status{font-size:12px;color:#218157;background:#ddf4e9;padding:4px 10px;border-radius:20px}
    .index-panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:21px;position:relative;z-index:1}
    .index-top{display:flex;justify-content:space-between;align-items:center;padding-bottom:16px;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}
    .index-row{display:grid;grid-template-columns:38px 1fr auto;gap:12px;align-items:center;padding:16px 0;border-bottom:1px solid #edf3f6}
    .index-row:last-child{border-bottom:0;padding-bottom:2px}
    .index-num{font-weight:800;color:var(--cyan);font-size:14px}
    .index-name{font-weight:700;font-size:14px}.index-sub{font-size:12px;color:var(--muted)}
    .index-tag{font-size:11px;padding:4px 8px;background:var(--blue-soft);color:var(--blue);border-radius:6px}
    .section{padding:92px 0}
    .section.alt{background:#fff}
    .section-head{display:flex;justify-content:space-between;gap:25px;align-items:end;margin-bottom:35px}
    .section-head p{max-width:490px;color:var(--muted);margin:0}
    .matrix{display:grid;grid-template-columns:1.45fr .8fr .8fr;gap:18px}
    .card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:27px;box-shadow:var(--shadow);transition:.22s ease}
    .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#b9d8e7}
    .matrix-main{min-height:280px;background:var(--blue);color:#fff;position:relative;overflow:hidden}
    .matrix-main h3,.matrix-main p{color:#fff;position:relative;z-index:1}
    .matrix-main p{opacity:.82}.matrix-main:after{content:"01";position:absolute;right:23px;bottom:-19px;font-size:130px;font-weight:900;color:rgba(255,255,255,.1)}
    .card-icon{width:43px;height:43px;border-radius:12px;background:var(--blue-soft);color:var(--blue);display:grid;place-items:center;font-weight:800;margin-bottom:22px}
    .matrix-main .card-icon{background:rgba(255,255,255,.16);color:#fff}
    .card p{color:var(--muted);font-size:14px;margin:12px 0 0}
    .mini-card{min-height:280px}
    .tag-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:23px}.tag{font-size:12px;padding:6px 10px;border:1px solid #cfe3ed;border-radius:20px;color:var(--blue);background:#f8fcfe}
    .milestones{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .milestone{padding:28px 22px 30px;border-right:1px solid var(--line);position:relative}.milestone:last-child{border-right:0}
    .milestone-no{color:var(--cyan);font-size:13px;font-weight:800}.milestone h3{margin:9px 0 8px;font-size:18px}.milestone p{margin:0;color:var(--muted);font-size:14px}
    .updates{display:grid;grid-template-columns:1.2fr .8fr;gap:22px}
    .update-feature{display:grid;grid-template-columns:190px 1fr;gap:23px;align-items:center}
    .cover{height:145px;border-radius:14px;background:linear-gradient(135deg,#c9e8f2,#eaf4f7);display:grid;place-items:center;color:var(--blue);font-size:35px;font-weight:900}
    .update-list{list-style:none;margin:0;padding:0}.update-list li{padding:15px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:15px;font-size:14px}.update-list li:first-child{padding-top:0}.update-list li:last-child{border:0;padding-bottom:0}.date{color:var(--muted);white-space:nowrap;font-size:12px}
    .assurance{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:stretch}
    .assurance-panel{background:#f0f8fb;border:1px solid #d3e9f1;border-radius:var(--radius);padding:30px}
    .assurance-list{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px}.assurance-item{background:#fff;border-radius:12px;padding:15px;border:1px solid var(--line);font-size:14px;font-weight:700}.assurance-item span{display:block;color:var(--muted);font-weight:400;font-size:12px;margin-top:3px}
    .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.step{padding:25px;border-left:3px solid var(--cyan);background:#fff;border-radius:0 var(--radius-sm) var(--radius-sm) 0;box-shadow:var(--shadow)}.step strong{font-size:30px;color:var(--blue);display:block;margin-bottom:12px}.step p{color:var(--muted);font-size:14px;margin:9px 0 0}
    .mobile-entry{display:grid;grid-template-columns:.85fr 1.15fr;gap:50px;align-items:center}.entry-board{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.entry-tile{min-height:120px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:14px;display:flex;flex-direction:column;justify-content:space-between;font-weight:700}.entry-tile b{font-size:24px;color:var(--blue)}.entry-tile small{color:var(--muted);font-weight:400}
    .faq-wrap{max-width:850px}.accordion{background:transparent}.accordion-item{border:1px solid var(--line);border-radius:12px;margin-bottom:10px;overflow:hidden;background:#fff}.accordion-title{border:0!important;color:var(--ink);font-weight:700;padding:19px 52px 19px 20px}.accordion-title:hover{background:var(--blue-soft);color:var(--blue)}.accordion-content{border-top:1px solid var(--line)!important;color:var(--muted);font-size:14px;padding:17px 20px}
    .cta{padding:38px 42px;border:1px solid #bdddea;background:var(--blue-soft);border-radius:var(--radius);display:flex;justify-content:space-between;align-items:center;gap:28px}.cta p{margin:9px 0 0;color:var(--muted);font-size:14px}.cta-actions{display:flex;gap:10px;flex-wrap:wrap;flex-shrink:0}
    .site-footer{background:#123d5c;color:#dcecf4;padding:55px 0 27px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:50px}.footer-brand{color:#fff}.footer-copy{color:#a9c5d3;font-size:13px;max-width:360px;margin-top:15px}.footer-title{color:#fff;font-weight:700;margin-bottom:12px}.footer-links{list-style:none;margin:0;padding:0}.footer-links li{margin:7px 0}.footer-links a{color:#b9d4df;font-size:13px}.footer-links a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.15);margin-top:38px;padding-top:18px;color:#9fbcca;font-size:12px;display:flex;justify-content:space-between;gap:15px}
    .mobile-tabs{display:none}
    @media(max-width:1024px){.hero-grid{gap:35px}.main-nav a{padding-left:8px;padding-right:8px}.matrix{grid-template-columns:1fr 1fr}.matrix-main{grid-column:span 2}.mobile-entry{gap:25px}}
    @media(max-width:768px){.container{width:min(var(--container),calc(100% - 28px))}.topbar{min-height:64px}.main-nav,.header-action{display:none}.menu-button{display:block;margin-left:auto}.brand-text{font-size:15px}.hero{padding:55px 0 48px}.hero-grid,.updates,.assurance,.mobile-entry{grid-template-columns:1fr}.stage{min-height:330px;padding:18px}.section{padding:62px 0}.section-head{display:block;margin-bottom:25px}.section-head p{margin-top:12px}.milestones{grid-template-columns:1fr 1fr}.milestone:nth-child(2){border-right:0}.milestone:nth-child(-n+2){border-bottom:1px solid var(--line)}.milestone:nth-child(3){border-right:1px solid var(--line)}.steps{grid-template-columns:1fr}.cta{display:block;padding:28px}.cta-actions{margin-top:20px}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid>div:first-child{grid-column:span 2}.mobile-tabs{display:flex;position:fixed;z-index:30;bottom:0;left:0;right:0;padding:8px 10px calc(8px + env(safe-area-inset-bottom));background:rgba(255,255,255,.97);border-top:1px solid var(--line);box-shadow:0 -8px 22px rgba(20,70,100,.08);justify-content:space-around}.mobile-tabs a{display:flex;flex-direction:column;align-items:center;color:var(--muted);font-size:11px;min-width:58px}.mobile-tabs a span{font-size:18px;line-height:22px}.mobile-tabs a.active{color:var(--blue);font-weight:700}}
    @media(max-width:520px){h1{font-size:35px}.hero-copy p{font-size:15px}.hero-actions .button{width:100%}.matrix{grid-template-columns:1fr}.matrix-main{grid-column:auto}.update-feature{grid-template-columns:1fr}.cover{height:125px}.assurance-list{grid-template-columns:1fr}.entry-board{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:8px}.stage{border-radius:18px}.index-panel{padding:15px}.index-row{grid-template-columns:28px 1fr}.index-tag{display:none}body{padding-bottom:67px}}

/* roulang page: category2 */
:root{
 --blue:#1769aa;--blue-dark:#0d4678;--blue-soft:#eaf5fc;--cyan:#39a9c7;
 --ink:#183247;--muted:#6d8291;--line:#dce8ef;--paper:#fff;--bg:#f5f9fb;
 --warm:#fbfcfa;--radius:18px;--radius-sm:11px;
 --shadow:0 14px 38px rgba(27,78,108,.10);--shadow-hover:0 20px 46px rgba(27,78,108,.17);
 --container:1180px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.75}
h1,h2,h3,h4,p{margin-top:0}h1,h2,h3,h4{line-height:1.3;letter-spacing:-.025em}
a{color:var(--blue);text-decoration:none;transition:.2s ease}a:hover{color:var(--blue-dark)}
img{max-width:100%;display:block}button,input{font:inherit}
button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid rgba(57,169,199,.42);outline-offset:3px}
.container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.topbar{min-height:76px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);font-weight:800;letter-spacing:-.03em;white-space:nowrap}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:18px;box-shadow:0 7px 16px rgba(23,105,170,.24)}
.brand-text{font-size:17px}.main-nav{margin-left:auto;display:flex;align-items:center;gap:6px}
.main-nav a{padding:9px 13px;border-radius:9px;color:var(--muted);font-size:14px}
.main-nav a:hover,.main-nav a.active{background:var(--blue-soft);color:var(--blue);font-weight:700}
.search-link{font-size:14px;color:var(--muted);padding:9px}.header-action{margin-left:8px}
.menu-button{display:none;border:1px solid var(--line);background:#fff;border-radius:9px;padding:7px 10px;color:var(--blue)}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:10px;border:1px solid transparent;font-weight:700;font-size:14px;transition:.22s ease}
.button.primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(23,105,170,.18)}
.button.primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.button.secondary{background:#fff;color:var(--blue);border-color:#b9d6e5}
.button.secondary:hover{border-color:var(--blue);background:var(--blue-soft);transform:translateY(-2px)}
.button.text{min-height:auto;padding:5px 0;color:var(--blue);background:transparent}
.page-intro{padding:56px 0 48px;background:var(--warm);border-bottom:1px solid var(--line)}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:22px}.crumbs a{color:var(--blue)}
.intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:end}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:800;font-size:13px;letter-spacing:.08em}
.eyebrow:before{content:"";width:22px;height:2px;background:var(--cyan)}
.page-intro h1{font-size:clamp(32px,4vw,54px);margin:14px 0 16px;max-width:720px}
.intro-copy{color:var(--muted);font-size:17px;max-width:650px;margin:0}
.intro-note{background:#eaf5fa;border:1px solid #cfe4ee;border-radius:16px;padding:22px 24px;box-shadow:var(--shadow)}
.note-label{font-size:12px;color:var(--blue);font-weight:800;margin-bottom:8px}.intro-note p{margin:0;color:var(--ink);font-size:14px}
.section{padding:78px 0}.section.alt{background:#fff}
.section-head{display:flex;justify-content:space-between;gap:25px;align-items:end;margin-bottom:30px}
.section-head p{max-width:500px;color:var(--muted);margin:0}
.section-head h2{margin:0;font-size:clamp(25px,3vw,36px)}
.badge,.tag{display:inline-flex;align-items:center;font-size:12px;border-radius:20px;padding:5px 10px}
.badge{background:#dff2f7;color:#11718b;font-weight:700}.tag{border:1px solid #cfe3ed;color:var(--blue);background:#f8fcfe}
.feature-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:22px}
.feature-card{min-height:310px;border-radius:var(--radius);padding:30px;background:var(--blue);color:#fff;position:relative;overflow:hidden;box-shadow:var(--shadow)}
.feature-card:after{content:"精选";position:absolute;right:-8px;bottom:-34px;color:rgba(255,255,255,.1);font-size:110px;font-weight:900}
.feature-card h3,.feature-card p{position:relative;z-index:1;color:#fff}.feature-card h3{font-size:27px;margin:22px 0 12px}
.feature-card p{opacity:.84;max-width:520px}.feature-card .button{position:relative;z-index:2;margin-top:18px;background:#fff;color:var(--blue)}
.cover-box{height:145px;background:#dceff6;border-radius:13px;border:1px solid rgba(255,255,255,.35);display:grid;place-items:center;color:var(--blue);font-weight:800;letter-spacing:.08em}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:27px;box-shadow:var(--shadow)}
.side-card h3{margin:0 0 16px;font-size:21px}.side-card p{color:var(--muted);font-size:14px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}
.index-mosaic{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px;align-items:stretch}
.mosaic-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:23px;box-shadow:var(--shadow);transition:.22s ease}
.mosaic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#b9d8e7}
.mosaic-card.wide{grid-row:span 2;background:#f1f8fb}.mosaic-cover{height:130px;border-radius:12px;background:#dcecf3;display:grid;place-items:center;color:var(--blue);font-weight:800;margin-bottom:18px}
.wide .mosaic-cover{height:240px}.mosaic-card h3{font-size:19px;margin:0 0 8px}.mosaic-card p{font-size:14px;color:var(--muted);margin:0 0 16px}
.meta{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:12px}
.timeline-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:55px;align-items:start}
.timeline-intro{position:sticky;top:110px}.timeline-intro h2{font-size:32px}.timeline-intro p{color:var(--muted)}
.timeline{border-left:2px solid #cce2ec;padding-left:28px}.timeline-item{position:relative;padding:0 0 29px}.timeline-item:last-child{padding-bottom:0}
.timeline-item:before{content:"";position:absolute;left:-37px;top:7px;width:14px;height:14px;border-radius:50%;background:var(--blue);border:4px solid var(--blue-soft)}
.timeline-item h3{font-size:18px;margin:0 0 5px}.timeline-item p{font-size:14px;color:var(--muted);margin:0}.time{color:var(--blue);font-size:12px;font-weight:800}
.rule-panel{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}.rule-card{padding:21px;background:var(--warm);border:1px solid var(--line);border-radius:14px}.rule-card strong{display:block;margin-bottom:7px}.rule-card span{font-size:13px;color:var(--muted)}
.faq-wrap{max-width:850px}.accordion-item{border:1px solid var(--line);border-radius:12px;margin-bottom:10px;overflow:hidden;background:#fff}
.accordion-title{border:0!important;color:var(--ink);font-weight:700;padding:19px 52px 19px 20px}
.accordion-title:hover{background:var(--blue-soft);color:var(--blue)}.accordion-content{border-top:1px solid var(--line);color:var(--muted);font-size:14px}
.cta{padding:38px 42px;border:1px solid #bdddea;background:var(--blue-soft);border-radius:var(--radius);display:flex;justify-content:space-between;align-items:center;gap:25px}
.cta h2{font-size:27px;margin:0 0 8px}.cta p{margin:0;color:var(--muted);font-size:14px}
.site-footer{padding:54px 0 28px;background:#fff;border-top:1px solid var(--line)}.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:40px}
.footer-brand{display:inline-flex}.footer-copy{color:var(--muted);font-size:13px;max-width:410px;margin:18px 0 0}.footer-title{font-weight:800;margin-bottom:13px}.footer-links{list-style:none;padding:0;margin:0}.footer-links li{margin:7px 0}.footer-links a{color:var(--muted);font-size:14px}.footer-links a:hover{color:var(--blue)}
.footer-bottom{display:flex;justify-content:space-between;gap:15px;border-top:1px solid var(--line);margin-top:38px;padding-top:20px;color:var(--muted);font-size:12px}
.mobile-tabs{display:none}
@media(max-width:1024px){.hero-grid,.intro-grid{gap:35px}.index-mosaic{grid-template-columns:1fr 1fr}.mosaic-card.wide{grid-row:auto}.wide .mosaic-cover{height:150px}}
@media(max-width:768px){.container{width:min(var(--container),calc(100% - 30px))}.topbar{min-height:66px;gap:10px}.brand-text{font-size:14px}.brand-mark{width:34px;height:34px}.main-nav,.header-action{display:none}.search-link{margin-left:auto}.menu-button{display:block}.page-intro{padding:40px 0}.intro-grid,.feature-grid,.timeline-layout{grid-template-columns:1fr}.timeline-intro{position:static}.section{padding:58px 0}.section-head{display:block}.section-head p{margin-top:12px}.index-mosaic,.rule-panel{grid-template-columns:1fr}.cta{display:block;padding:28px}.cta .button{margin-top:20px}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid>div:first-child{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:5px}.mobile-tabs{position:fixed;display:grid;grid-template-columns:repeat(4,1fr);bottom:0;left:0;right:0;z-index:30;background:rgba(255,255,255,.97);border-top:1px solid var(--line);padding:8px 10px calc(8px + env(safe-area-inset-bottom));box-shadow:0 -8px 22px rgba(27,78,108,.08)}.mobile-tabs a{text-align:center;color:var(--muted);font-size:11px;padding:4px;border-radius:9px}.mobile-tabs a span{display:block;font-size:18px;line-height:1.2}.mobile-tabs a.active{color:var(--blue);background:var(--blue-soft);font-weight:700}body{padding-bottom:70px}}
@media(max-width:520px){.page-intro h1{font-size:32px}.feature-card{min-height:0;padding:23px}.feature-card h3{font-size:23px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.topbar{gap:7px}.brand-text{max-width:178px;overflow:hidden;text-overflow:ellipsis}}

/* roulang page: category1 */
:root{
 --blue:#1769aa;--blue-dark:#0d4678;--blue-soft:#eaf5fc;--cyan:#39a9c7;
 --ink:#183247;--muted:#6d8291;--line:#dce8ef;--paper:#fff;--bg:#f5f9fb;
 --warm:#fbfcfa;--radius:18px;--radius-sm:11px;
 --shadow:0 14px 38px rgba(27,78,108,.10);--shadow-hover:0 20px 46px rgba(27,78,108,.17);
 --container:1180px;
}
html{scroll-behavior:smooth}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.75}
h1,h2,h3,h4,p{margin-top:0}
h1,h2,h3,h4{line-height:1.3;letter-spacing:-.025em}
h1{font-size:clamp(31px,4vw,52px);margin-bottom:18px}
h2{font-size:clamp(25px,3vw,36px);margin-bottom:13px}
h3{font-size:20px;margin-bottom:8px}
a{color:var(--blue);text-decoration:none;transition:.2s ease}
a:hover{color:var(--blue-dark)}
img{max-width:100%;display:block}
button,input{font:inherit}
button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid rgba(57,169,199,.42);outline-offset:3px}
.container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.topbar{min-height:76px;display:flex;align-items:center;gap:22px}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);font-weight:800;letter-spacing:-.03em;white-space:nowrap}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:18px;box-shadow:0 7px 16px rgba(23,105,170,.24)}
.brand-text{font-size:17px}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:6px}
.main-nav a{padding:9px 13px;border-radius:9px;color:var(--muted);font-size:14px}
.main-nav a:hover,.main-nav a.active{background:var(--blue-soft);color:var(--blue);font-weight:700}
.search-link{font-size:14px;color:var(--muted);padding:9px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:10px;border:1px solid transparent;font-weight:700;font-size:14px;transition:.22s ease;cursor:pointer}
.button.primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(23,105,170,.18)}
.button.primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.button.secondary{background:#fff;color:var(--blue);border-color:#b9d6e5}
.button.secondary:hover{border-color:var(--blue);background:var(--blue-soft);transform:translateY(-2px)}
.button.text{min-height:auto;padding:5px 0;color:var(--blue);background:transparent}
.button:active{transform:translateY(0)!important;box-shadow:none}
.menu-button{display:none;border:1px solid var(--line);background:#fff;border-radius:9px;padding:7px 10px;color:var(--blue);cursor:pointer}
.page-intro{padding:58px 0 42px;background:var(--warm);border-bottom:1px solid var(--line)}
.crumbs{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:22px}
.crumbs a{color:var(--blue)}
.intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:end}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:800;font-size:13px;letter-spacing:.08em;margin-bottom:15px}
.eyebrow:before{content:"";width:22px;height:2px;background:var(--cyan)}
.page-intro p{color:var(--muted);max-width:700px;margin-bottom:0;font-size:17px}
.intro-note{padding:22px 24px;background:#eaf5fa;border:1px solid #cfe4ee;border-radius:16px;color:var(--blue-dark)}
.intro-note strong{display:block;font-size:14px;margin-bottom:7px}
.intro-note span{font-size:13px;color:var(--muted)}
.section{padding:76px 0}
.section.alt{background:#fff}
.section-head{display:flex;justify-content:space-between;gap:25px;align-items:end;margin-bottom:30px}
.section-head p{max-width:500px;color:var(--muted);margin:0}
.browse-layout{display:grid;grid-template-columns:250px 1fr;gap:34px;align-items:start}
.filter-panel{position:sticky;top:103px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:var(--shadow)}
.filter-title{font-weight:800;margin-bottom:16px}
.filter-label{font-size:12px;color:var(--muted);display:block;margin:19px 0 7px}
.filter-list{list-style:none;padding:0;margin:0}
.filter-list li{margin-bottom:6px}
.filter-list a{display:flex;justify-content:space-between;padding:9px 10px;border-radius:8px;color:var(--muted);font-size:14px}
.filter-list a:hover,.filter-list a.selected{background:var(--blue-soft);color:var(--blue);font-weight:700}
.filter-count{font-size:11px;color:var(--muted)}
.search-box{display:flex;gap:8px;margin-bottom:22px}
.search-box input{height:44px;border:1px solid #c9dce6;border-radius:9px;padding:0 12px;min-width:0;box-shadow:none;background:#fbfdfe}
.search-box input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(57,169,199,.12)}
.search-box .button{padding:0 15px;min-width:62px}
.result-bar{display:flex;justify-content:space-between;align-items:center;margin-bottom:13px;color:var(--muted);font-size:13px}
.result-bar select{border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);padding:7px 10px}
.entry-list{display:grid;gap:14px}
.entry-card{display:grid;grid-template-columns:150px 1fr auto;gap:22px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:16px;padding:15px;box-shadow:0 8px 24px rgba(27,78,108,.06);transition:.22s ease}
.entry-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#b9d8e7}
.thumb{height:105px;border-radius:11px;background:#eaf5fa;border:1px solid #cfe4ee;display:grid;place-items:center;color:var(--blue);font-weight:800;position:relative;overflow:hidden}
.thumb:after{content:"索引";position:absolute;right:8px;bottom:7px;font-size:11px;color:#6a9ab1}
.entry-number{font-size:12px;color:var(--cyan);font-weight:800;letter-spacing:.08em}
.entry-card h3{margin:4px 0 5px;font-size:18px}
.entry-card p{font-size:13px;color:var(--muted);margin:0;max-width:570px}
.meta-line{display:flex;gap:13px;flex-wrap:wrap;color:var(--muted);font-size:12px;margin-top:9px}
.badge,.tag{display:inline-flex;align-items:center;border-radius:20px;padding:5px 10px;font-size:12px}
.badge{background:#edf8f2;color:#317459}
.tag{border:1px solid #cfe3ed;color:var(--blue);background:#f8fcfe}
.entry-action{white-space:nowrap}
.empty-state{display:none;margin-top:16px;padding:25px;text-align:center;background:#f8fbfc;border:1px dashed #bdd5df;border-radius:14px;color:var(--muted)}
.index-strip{display:grid;grid-template-columns:1.2fr .8fr;gap:25px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:27px;box-shadow:var(--shadow);transition:.22s ease}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#b9d8e7}
.card p{color:var(--muted);font-size:14px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}
.timeline{list-style:none;margin:0;padding:0}
.timeline li{display:grid;grid-template-columns:80px 1fr;gap:15px;padding:15px 0;border-bottom:1px solid var(--line);font-size:14px}
.timeline li:last-child{border-bottom:0}
.timeline time{color:var(--cyan);font-weight:700;font-size:12px}
.rule-box{display:flex;gap:18px;align-items:flex-start;padding:23px;border:1px solid #c7e0eb;background:var(--blue-soft);border-radius:16px}
.rule-icon{width:38px;height:38px;border-radius:11px;background:#fff;color:var(--blue);display:grid;place-items:center;font-weight:800;flex:none}
.rule-box p{margin:3px 0 0;color:var(--muted);font-size:14px}
.faq-wrap{max-width:850px}
.accordion{background:transparent;margin:0}
.accordion-item{border:1px solid var(--line);border-radius:12px;margin-bottom:10px;overflow:hidden;background:#fff}
.accordion-title{border:0!important;color:var(--ink);font-weight:700;padding:18px 52px 18px 20px}
.accordion-title:hover{background:var(--blue-soft);color:var(--blue)}
.accordion-content{border-top:1px solid var(--line);color:var(--muted);font-size:14px;padding:17px 20px}
.cta{padding:36px 42px;border:1px solid #bdddea;background:var(--blue-soft);border-radius:var(--radius);display:flex;justify-content:space-between;align-items:center;gap:25px}
.cta p{margin:0;color:var(--muted);font-size:14px}
.cta-actions{display:flex;gap:10px;flex-wrap:wrap;flex:none}
.site-footer{padding:54px 0 22px;background:#fff;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px}
.footer-brand{margin-bottom:15px}
.footer-copy{color:var(--muted);font-size:13px;max-width:430px;margin:0}
.footer-title{font-size:13px;font-weight:800;margin-bottom:12px}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin:6px 0}
.footer-links a{font-size:13px;color:var(--muted)}
.footer-links a:hover{color:var(--blue)}
.footer-bottom{display:flex;justify-content:space-between;gap:15px;margin-top:42px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}
.mobile-tabs{display:none}
@media(max-width:1024px){
 .intro-grid{gap:35px}.browse-layout{grid-template-columns:220px 1fr}.entry-card{grid-template-columns:125px 1fr}
 .entry-action{grid-column:2}.footer-grid{gap:25px}
}
@media(max-width:768px){
 .container{width:min(var(--container),calc(100% - 30px))}
 .topbar{min-height:66px;gap:10px}.brand-text{font-size:15px}.brand-mark{width:34px;height:34px}
 .main-nav,.header-action{display:none}.search-link{margin-left:auto}.menu-button{display:block}
 .page-intro{padding:40px 0 33px}.intro-grid{display:block}.intro-note{margin-top:25px}
 .section{padding:58px 0}.section-head{display:block}.section-head p{margin-top:10px}
 .browse-layout{display:block}.filter-panel{position:static;margin-bottom:22px}
 .filter-panel .filter-list{display:flex;flex-wrap:wrap;gap:5px}.filter-panel .filter-list li{margin:0}
 .filter-panel .filter-label{margin-top:13px}.index-strip{grid-template-columns:1fr}
 .entry-card{grid-template-columns:110px 1fr;gap:15px}.entry-card p{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
 .entry-action{grid-column:2}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid>div:first-child{grid-column:1/-1}
 .footer-bottom{display:block}.footer-bottom span{display:block;margin-top:5px}
 .mobile-tabs{position:fixed;display:grid;grid-template-columns:repeat(4,1fr);left:0;right:0;bottom:0;height:62px;background:rgba(255,255,255,.96);border-top:1px solid var(--line);z-index:30;padding-bottom:env(safe-area-inset-bottom);box-shadow:0 -7px 20px rgba(27,78,108,.08)}
 .mobile-tabs a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;color:var(--muted);font-size:11px}.mobile-tabs a strong{font-size:19px;line-height:1;color:var(--blue);font-weight:500}.mobile-tabs a.active{color:var(--blue);font-weight:800;border-top:3px solid var(--blue)}
 body{padding-bottom:65px}
 .cta{display:block;padding:28px}.cta-actions{margin-top:20px}
}
@media(max-width:520px){
 h1{font-size:31px}.page-intro p{font-size:15px}.search-box{display:grid;grid-template-columns:1fr auto}
 .entry-card{display:block;padding:14px}.thumb{height:135px;margin-bottom:14px}.entry-action{margin-top:14px}
 .result-bar{align-items:flex-start;gap:10px;flex-direction:column}.timeline li{grid-template-columns:65px 1fr}
 .footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}
}