/* roulang page: index */
:root{
      --brand:#135eab;--brand-dark:#0c4c8b;--ink:#10233a;--muted:#526579;
      --line:#dce5ef;--mist:#f7f9fc;--paper:#fff;--green:#168a72;--warm:#e8892b;
      --shadow:0 12px 30px rgba(18,49,78,.08);--shadow-lg:0 18px 42px rgba(18,49,78,.13);
      --radius:20px;--radius-sm:13px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--mist);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    :focus-visible{outline:3px solid rgba(19,94,171,.32);outline-offset:3px}
    .container{width:min(100% - 64px,1240px);margin-inline:auto}
    .topbar{height:34px;border-bottom:1px solid var(--line);background:#f1f5f9;color:var(--muted);font-size:12px}
    .topbar-in{height:100%;display:flex;align-items:center;justify-content:space-between;gap:18px}
    .status-dot{display:inline-block;width:7px;height:7px;margin-right:7px;border-radius:50%;background:var(--green)}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);transition:.2s ease}
    .masthead{min-height:92px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand-wrap{display:flex;align-items:center;gap:18px;min-width:0}
    .brand{font-size:29px;font-weight:900;letter-spacing:-1.8px;line-height:1.05;color:var(--ink);white-space:nowrap}
    .brand b{color:var(--brand)}
    .brand-note{padding-left:18px;border-left:1px solid var(--line);font-size:13px;color:var(--muted);white-space:nowrap}
    .desktop-nav{display:flex;align-items:center;gap:25px;height:92px}
    .nav-link{position:relative;height:100%;display:inline-flex;align-items:center;font-size:15px;font-weight:700;color:var(--muted);transition:.2s}
    .nav-link:hover{color:var(--brand)}
    .nav-link.active{color:var(--brand)}
    .nav-link.active:after{content:"";position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--brand);border-radius:4px 4px 0 0}
    .nav-rule{height:4px;background:linear-gradient(90deg,var(--brand) 0 67%,#9ec4e8 67% 89%,var(--green) 89% 92%,transparent 92%)}
    .mobile-toggle{display:none;width:45px;height:45px;border:1px solid var(--line);border-radius:11px;background:#fff;color:var(--brand);align-items:center;justify-content:center}
    .mobile-panel{display:none}
    .hero{position:relative;overflow:hidden;background:#fff;padding:76px 0 30px}
    .hero:before{content:"";position:absolute;width:600px;height:600px;right:-170px;top:-330px;border:1px solid rgba(19,94,171,.11);border-radius:50%;box-shadow:0 0 0 42px rgba(19,94,171,.035),0 0 0 86px rgba(19,94,171,.025)}
    .hero-grid{position:relative;display:grid;grid-template-columns:1.04fr .96fr;gap:42px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--brand);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"01";display:inline-grid;place-items:center;width:28px;height:28px;color:#fff;background:var(--brand);border-radius:50%;font-size:11px;letter-spacing:0}
    h1,h2,h3,p{margin-top:0}
    h1{max-width:710px;margin:17px 0 18px;font-size:clamp(39px,5vw,62px);line-height:1.17;letter-spacing:-2.5px;font-weight:900}
    .hero-copy{max-width:655px;font-size:17px;color:var(--muted)}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
    .btn{min-height:46px;padding:0 20px;display:inline-flex;align-items:center;justify-content:center;border-radius:11px;border:1px solid transparent;font-weight:800;font-size:15px;transition:transform .18s,background .18s,border-color .18s,box-shadow .18s}
    .btn-primary{color:#fff;background:var(--brand);box-shadow:0 8px 16px rgba(19,94,171,.18)}
    .btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 11px 20px rgba(19,94,171,.25)}
    .btn-secondary{color:var(--brand);background:#fff;border-color:#9fc2e5}
    .btn-secondary:hover{background:#eef6fd;transform:translateY(-1px)}
    .btn:active{transform:translateY(0)}
    .trust-line{margin-top:20px;font-size:13px;color:var(--muted)}
    .trust-line span{color:var(--green);font-weight:800}
    .cover-board{position:relative;min-height:423px;padding:24px;display:flex;align-items:flex-end;overflow:hidden;border:1px solid #dbe8f4;border-radius:22px;background:#dcebf8;box-shadow:var(--shadow)}
    .cover-board:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,255,255,.72),transparent 48%),repeating-linear-gradient(135deg,transparent 0 14px,rgba(19,94,171,.05) 14px 15px)}
    .cover-orbit{position:absolute;width:390px;height:390px;top:-100px;right:-50px;border:1px solid rgba(19,94,171,.3);border-radius:50%}
    .cover-orbit:after{content:"";position:absolute;inset:28px;border:1px dashed rgba(19,94,171,.25);border-radius:50%}
    .cover-title{position:relative;z-index:1;font-size:35px;line-height:1.25;font-weight:900;letter-spacing:-1px;max-width:310px}
    .cover-title small{display:block;margin-bottom:13px;color:var(--brand);font-size:12px;letter-spacing:.12em}
    .float-card{position:absolute;z-index:2;background:rgba(255,255,255,.96);border:1px solid rgba(255,255,255,.8);border-radius:14px;padding:14px 16px;box-shadow:0 12px 25px rgba(18,49,78,.14)}
    .float-card strong{display:block;font-size:15px}.float-card span{display:block;margin-top:3px;font-size:12px;color:var(--muted)}
    .float-one{top:29px;right:26px}.float-two{right:38px;bottom:31px}.float-three{left:28px;top:152px}
    .directory-strip{position:relative;margin-top:58px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}
    .directory-list{display:grid;grid-template-columns:repeat(4,1fr)}
    .directory-list a{padding:16px 18px;border-right:1px solid var(--line);font-size:14px;font-weight:700;transition:.2s}
    .directory-list a:hover{color:var(--brand);background:#f3f8fd}
    .directory-list a:last-child{border-right:0}
    .directory-list em{font-style:normal;color:var(--brand);margin-right:9px;font-size:12px}
    section{padding:102px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:35px;margin-bottom:36px}
    .section-kicker{display:flex;align-items:center;gap:13px;color:var(--brand);font-size:14px;font-weight:900}
    .section-num{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:#e9f3fc;color:var(--brand);font-size:13px}
    h2{margin:7px 0 0;font-size:clamp(30px,3.2vw,39px);line-height:1.25;letter-spacing:-1.3px;font-weight:900}
    .section-intro{max-width:420px;margin:0;color:var(--muted);font-size:15px}
    .service-grid{display:grid;grid-template-columns:1.14fr .86fr;grid-template-rows:1fr 1fr;gap:18px}
    .service-card{position:relative;overflow:hidden;padding:29px;background:#fff;border:1px solid #e5ecf3;border-radius:var(--radius);box-shadow:var(--shadow);transition:.2s}
    .service-card:hover,.case-main:hover,.mini-case:hover,.plan-card:hover{transform:translateY(-4px);border-color:#accce9;box-shadow:var(--shadow-lg)}
    .service-card.major{grid-row:span 2;min-height:380px;background:linear-gradient(145deg,#fff,#edf6fd)}
    .service-card.major:after{content:"";position:absolute;width:200px;height:200px;right:-55px;bottom:-55px;border:24px solid rgba(19,94,171,.08);border-radius:50%}
    .card-symbol{display:grid;place-items:center;width:41px;height:41px;margin-bottom:55px;border-radius:12px;background:#e9f3fc;color:var(--brand);font-weight:900}
    .service-card:not(.major) .card-symbol{margin-bottom:20px}
    h3{margin-bottom:8px;font-size:21px;line-height:1.35;font-weight:900}
    .card-text{margin-bottom:18px;color:var(--muted);font-size:14px}
    .tag{display:inline-flex;align-items:center;padding:4px 10px;border:1px solid #cce0f1;border-radius:999px;color:var(--brand);background:#f3f8fd;font-size:12px;font-weight:800}
    .card-link{display:inline-flex;gap:8px;align-items:center;margin-top:18px;color:var(--brand);font-size:14px;font-weight:800}
    .card-link:hover{gap:12px}
    .stats-section{padding:0;background:#eaf4fc}
    .stats-wrap{position:relative;overflow:hidden;display:grid;grid-template-columns:.8fr 2.2fr;gap:45px;align-items:center;padding:54px 0}
    .stats-wrap:after{content:"";position:absolute;right:0;bottom:0;left:0;height:8px;background:repeating-linear-gradient(90deg,var(--brand) 0 18px,transparent 18px 26px);opacity:.16}
    .stats-copy h2{font-size:31px}.stats-copy p{margin:12px 0 0;color:var(--muted);font-size:14px}
    .stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
    .stat{padding:5px 20px;border-left:1px solid #bcd6ec}.stat:first-child{border-left:0}
    .stat strong{display:block;color:var(--ink);font-size:35px;line-height:1;font-weight:900;letter-spacing:-1.5px}
    .stat span{display:block;margin-top:9px;color:var(--muted);font-size:13px}
    .case-layout{display:grid;grid-template-columns:1.33fr .67fr;gap:22px}
    .case-main,.mini-case{background:#fff;border:1px solid #e5ecf3;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.2s}
    .case-image{height:238px;position:relative;background:linear-gradient(125deg,#153e6e,#5c99cc 54%,#d6ecfb)}
    .case-image:before{content:"";position:absolute;width:210px;height:210px;top:25px;right:13%;border:1px solid rgba(255,255,255,.55);border-radius:50%;box-shadow:0 0 0 22px rgba(255,255,255,.1)}
    .case-image:after{content:"内容摘选";position:absolute;left:28px;bottom:23px;color:#fff;font-size:13px;font-weight:900;letter-spacing:.18em}
    .case-body{padding:25px 28px 28px}.case-body p{color:var(--muted);font-size:14px}
    .case-meta{display:flex;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
    .mini-list{display:flex;flex-direction:column;gap:16px}
    .mini-case{display:grid;grid-template-columns:94px 1fr}
    .mini-thumb{min-height:130px;background:linear-gradient(145deg,#c6e2f7,#fff 60%,#79add9);position:relative}
    .mini-thumb:after{content:"0" attr(data-no);position:absolute;left:12px;top:10px;color:var(--brand);font-size:12px;font-weight:900}
    .mini-copy{padding:17px}.mini-copy h3{font-size:16px;margin-bottom:7px}.mini-copy p{margin:0;color:var(--muted);font-size:13px;line-height:1.55}
    .plan-zone{background:#fff}
    .plan-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center}
    .steps-panel{padding:34px;border:1px solid #dbe8f3;border-radius:20px;background-color:#f3f8fc;background-image:linear-gradient(#dbeaf7 1px,transparent 1px),linear-gradient(90deg,#dbeaf7 1px,transparent 1px);background-size:27px 27px}
    .step{display:grid;grid-template-columns:42px 1fr;gap:15px;position:relative;padding:0 0 23px}
    .step:last-child{padding-bottom:0}.step:not(:last-child):after{content:"";position:absolute;left:20px;top:42px;height:calc(100% - 30px);border-left:1px dashed #88b6dc}
    .step-no{position:relative;z-index:1;display:grid;place-items:center;width:41px;height:41px;border-radius:50%;background:#fff;border:1px solid #bad5ea;color:var(--brand);font-size:12px;font-weight:900}
    .step h3{font-size:17px;margin:3px 0}.step p{margin:0;color:var(--muted);font-size:14px}
    .plan-stack{position:relative;padding:15px 16px 25px}
    .plan-stack:before,.plan-stack:after{content:"";position:absolute;z-index:0;border:1px solid #dbe8f3;border-radius:17px;background:#edf6fd}
    .plan-stack:before{inset:30px 0 0 32px}.plan-stack:after{inset:15px 15px 15px 16px;background:#f7fbfe}
    .plan-card{position:relative;z-index:1;padding:31px;background:#fff;border:1px solid #b9d8ee;border-radius:18px;box-shadow:var(--shadow);transition:.2s}
    .plan-card ul{margin:18px 0 25px;padding:0;list-style:none}.plan-card li{padding:8px 0;border-bottom:1px solid #edf1f5;font-size:14px;color:var(--muted)}.plan-card li:before{content:"✓";margin-right:9px;color:var(--green);font-weight:900}
    .plan-labels{position:absolute;z-index:2;right:-12px;top:-21px;display:flex;flex-direction:column;gap:9px}.plan-labels span{padding:8px 12px;border-radius:9px;background:#fff;border:1px solid #dce8f2;box-shadow:0 5px 13px rgba(18,49,78,.08);font-size:12px;font-weight:800;color:var(--brand)}
    .faq-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:75px;align-items:start}
    .faq-side p{color:var(--muted)}.faq-side .btn{margin-top:16px}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 10px;border:0;background:transparent;text-align:left;color:var(--ink);font-weight:900;font-size:16px}
    .faq-icon{flex:0 0 auto;display:grid;place-items:center;width:25px;height:25px;border-radius:50%;background:#e9f3fc;color:var(--brand);transition:transform .2s}
    .faq-answer{display:none;margin:0 0 19px;padding:14px 18px;border-left:3px solid var(--brand);border-radius:0 11px 11px 0;background:#f1f7fc;color:var(--muted);font-size:14px}
    .faq-item.open .faq-answer{display:block}.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--brand);color:#fff}
    .contact-section{padding:94px 0;background:#dceefa}
    .contact-grid{display:grid;grid-template-columns:.88fr 1.12fr;gap:65px;align-items:center}
    .contact-copy h2{font-size:40px}.contact-copy p{max-width:435px;margin:17px 0;color:var(--muted)}
    .assurance{display:flex;gap:9px;align-items:center;margin-top:25px;color:var(--green);font-size:14px;font-weight:800}
    .form-card{padding:30px;background:#fff;border:1px solid #c9e0f1;border-radius:20px;box-shadow:var(--shadow-lg)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.field.full{grid-column:span 2}
    label{display:block;margin-bottom:6px;font-size:13px;font-weight:800;color:var(--ink)}
    input,select,textarea{width:100%;border:1px solid #ccdbe8;border-radius:10px;background:#fff;padding:11px 12px;color:var(--ink);outline:none;transition:.2s}
    input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(19,94,171,.12)}
    textarea{min-height:93px;resize:vertical}
    .privacy-check{display:flex;align-items:flex-start;gap:8px;margin:16px 0;color:var(--muted);font-size:12px;line-height:1.55}.privacy-check input{width:16px;height:16px;margin-top:2px;accent-color:var(--brand)}
    .form-message{display:none;margin-top:14px;padding:11px 13px;border-radius:9px;background:#e9f7f3;color:#126a59;font-size:13px;font-weight:700}
    footer{padding:59px 0 25px;background:#eef3f7;border-top:1px solid var(--line)}
    .footer-top{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-bottom:27px;border-bottom:1px solid var(--line)}
    .footer-brand{font-size:23px;font-weight:900;letter-spacing:-1px}.footer-brand b{color:var(--brand)}
    .footer-top p{margin:0;color:var(--muted);font-size:13px}
    .footer-grid{display:grid;grid-template-columns:1.35fr .8fr .9fr .75fr;gap:28px;padding:32px 0}
    .footer-col h3{font-size:14px;margin-bottom:13px}.footer-col a,.footer-col span{display:block;margin:7px 0;color:var(--muted);font-size:13px}.footer-col a:hover{color:var(--brand)}
    .footer-bottom{display:flex;justify-content:space-between;gap:18px;padding-top:20px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
    .footer-bottom div{display:flex;gap:15px;flex-wrap:wrap}
    @media(max-width:1024px){.container{width:min(100% - 48px,1240px)}.desktop-nav{gap:17px}.brand{font-size:24px}.hero-grid,.contact-grid{gap:32px}.faq-layout{gap:42px}.plan-layout{gap:35px}}
    @media(max-width:900px){
      .desktop-nav{display:none}.mobile-toggle{display:inline-flex}.masthead{min-height:76px}.brand-note{display:none}
      .mobile-panel{position:fixed;z-index:70;top:0;right:0;bottom:0;width:min(85vw,350px);padding:22px;background:#fff;box-shadow:-12px 0 40px rgba(18,49,78,.18);transform:translateX(105%);transition:transform .25s}
      .mobile-panel.show{display:block;transform:translateX(0)}.mobile-head{display:flex;justify-content:space-between;align-items:center;padding-bottom:20px;border-bottom:1px solid var(--line)}.mobile-head strong{font-size:17px}.close-menu{width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--brand);font-size:22px}
      .mobile-panel a{display:block;padding:16px 3px;border-bottom:1px solid var(--line);font-weight:800}.mobile-panel a.active{color:var(--brand)}.menu-mask{display:none;position:fixed;z-index:60;inset:0;background:rgba(16,35,58,.34)}.menu-mask.show{display:block}
      .hero-grid,.plan-layout,.faq-layout,.contact-grid{grid-template-columns:1fr}.hero{padding-top:58px}.cover-board{min-height:345px}.service-grid{grid-template-columns:1fr 1fr}.service-card.major{grid-column:span 2;grid-row:auto;min-height:300px}.stats-wrap{grid-template-columns:1fr;gap:28px}.case-layout{grid-template-columns:1fr}.faq-side{max-width:580px}.footer-grid{grid-template-columns:1.3fr 1fr 1fr}
    }
    @media(max-width:640px){
      .container{width:min(100% - 32px,1240px)}.topbar-in span:last-child{display:none}.brand{font-size:20px;letter-spacing:-1.4px}.hero{padding:49px 0 22px}h1{font-size:37px;letter-spacing:-1.8px}.hero-copy{font-size:15px}.hero-actions{display:grid;grid-template-columns:1fr 1fr}.btn{padding:0 12px;font-size:14px}.cover-board{min-height:290px;padding:20px}.cover-title{font-size:28px;max-width:240px}.float-three{display:none}.directory-list{grid-template-columns:1fr 1fr}.directory-list a:nth-child(2){border-right:0}.directory-list a{padding:13px 10px;font-size:12px}
      section{padding:62px 0}.section-head{display:block;margin-bottom:25px}.section-intro{margin-top:13px}.service-grid{grid-template-columns:1fr}.service-card.major{grid-column:auto;min-height:auto}.service-card{padding:24px}.card-symbol{margin-bottom:23px}.stats-wrap{padding:43px 0}.stats-grid{grid-template-columns:1fr 1fr}.stat{padding:17px 12px;border-left:0;border-top:1px solid #bcd6ec}.stat:nth-child(-n+2){border-top:0}.stat strong{font-size:30px}.case-image{height:190px}.case-body{padding:21px}.mini-case{grid-template-columns:77px 1fr}.mini-thumb{min-height:115px}.plan-stack{padding:8px 8px 19px}.plan-labels{right:-4px}.faq-question{padding:17px 4px;font-size:15px}.contact-section{padding:63px 0}.contact-copy h2{font-size:33px}.form-card{padding:21px}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.footer-top{display:block}.footer-top p{margin-top:10px}.footer-grid{grid-template-columns:1fr 1fr;gap:20px}.footer-bottom{display:block}.footer-bottom div{margin-top:8px}
    }
    @media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* roulang page: category2 */
:root{
 --brand:#135eab;--brand-dark:#0c4c8b;--ink:#10233a;--muted:#526579;
 --line:#dce5ef;--mist:#f7f9fc;--paper:#fff;--green:#168a72;--warm:#e8892b;
 --shadow:0 12px 30px rgba(18,49,78,.08);--shadow-lg:0 18px 42px rgba(18,49,78,.13);
 --radius:20px;--radius-sm:13px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--mist);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.7}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
:focus-visible{outline:3px solid rgba(19,94,171,.35);outline-offset:3px}
.container{width:min(calc(100% - 64px),1240px);margin-inline:auto}
.topbar{height:34px;border-bottom:1px solid var(--line);background:#f1f5f9;color:var(--muted);font-size:12px}
.topbar-in{height:100%;display:flex;align-items:center;justify-content:space-between;gap:18px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);transition:.2s ease}
.masthead{min-height:92px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand-wrap{display:flex;align-items:center;gap:18px;min-width:0}
.brand{font-size:29px;font-weight:900;letter-spacing:-1.8px;line-height:1.05;color:var(--ink);white-space:nowrap}
.brand b{color:var(--brand)}
.brand-note{padding-left:18px;border-left:1px solid var(--line);font-size:13px;color:var(--muted);white-space:nowrap}
.desktop-nav{display:flex;align-items:center;gap:25px;height:92px}
.nav-link{position:relative;height:100%;display:inline-flex;align-items:center;font-size:15px;font-weight:700;color:var(--muted);transition:.2s}
.nav-link:hover,.nav-link.active{color:var(--brand)}
.nav-link.active:after{content:"";position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--brand);border-radius:4px 4px 0 0}
.nav-rule{height:4px;background:linear-gradient(90deg,var(--brand) 0 67%,#9ec4e8 67% 89%,var(--green) 89% 92%,transparent 92%)}
.mobile-toggle{display:none;width:45px;height:45px;border:1px solid var(--line);border-radius:11px;background:#fff;color:var(--brand);align-items:center;justify-content:center}
.mobile-panel{display:none;background:#fff;border-top:1px solid var(--line);padding:12px 16px 20px}
.mobile-panel.open{display:block}
.mobile-panel a{display:block;padding:13px 8px;border-bottom:1px solid var(--line);color:var(--muted);font-weight:700}
.mobile-panel a.active{color:var(--brand)}
.page-intro{padding:64px 0 54px;background:#fff;border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:24px}
.breadcrumb span{color:#9aaabd}
.intro-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:50px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--brand);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before{content:"02";display:grid;place-items:center;width:29px;height:29px;color:#fff;background:var(--brand);border-radius:50%;font-size:11px;letter-spacing:0}
h1{font-size:clamp(36px,5vw,56px);line-height:1.18;letter-spacing:-2px;margin:18px 0 18px;font-weight:900}
.intro-copy{max-width:700px;color:var(--muted);font-size:17px}
.tag-row{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
.tag{display:inline-flex;align-items:center;padding:4px 11px;border:1px solid #cce0f1;border-radius:999px;color:var(--brand);background:#f3f8fd;font-size:12px;font-weight:800}
.guide-cover{min-height:260px;padding:30px;position:relative;overflow:hidden;border-radius:22px;background:#eaf4fc;border:1px solid #cfe2f2}
.guide-cover:before,.guide-cover:after{content:"";position:absolute;border:1px solid rgba(19,94,171,.18);transform:rotate(-18deg)}
.guide-cover:before{width:300px;height:180px;right:-60px;top:28px}
.guide-cover:after{width:250px;height:150px;right:20px;bottom:-60px}
.guide-cover strong{position:relative;z-index:1;display:block;color:var(--brand);font-size:13px;letter-spacing:.12em}
.guide-cover h2{position:relative;z-index:1;max-width:260px;margin:24px 0 0;font-size:31px;line-height:1.3}
.cover-index{position:absolute;z-index:1;bottom:24px;left:30px;color:var(--muted);font-size:13px}
.content-area{padding:88px 0 104px}
.guide-layout{display:grid;grid-template-columns:230px 1fr;gap:48px;align-items:start}
.chapter-nav{position:sticky;top:125px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow)}
.chapter-nav h2{font-size:15px;margin:0 0 12px}
.chapter-nav a{display:block;padding:10px 4px;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted);transition:.2s}
.chapter-nav a:hover,.chapter-nav a.active{color:var(--brand);padding-left:8px}
.chapter-nav a:last-child{border-bottom:0}
.topic-stack{display:grid;gap:22px}
.topic-card{position:relative;overflow:hidden;background:#fff;border:1px solid #e5ecf3;border-radius:var(--radius);padding:30px 34px;box-shadow:var(--shadow);transition:.2s}
.topic-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#accce9}
.topic-card:after{content:"";position:absolute;width:150px;height:150px;right:-70px;bottom:-75px;border:18px solid rgba(19,94,171,.06);border-radius:50%}
.topic-head{display:flex;gap:20px;align-items:flex-start}
.topic-number{flex:0 0 54px;color:var(--brand);font-size:29px;font-weight:900;line-height:1}
.topic-card h3{margin:0;font-size:23px;line-height:1.35}
.topic-card p{color:var(--muted);margin:13px 0 20px;max-width:700px}
.topic-links{display:flex;flex-wrap:wrap;gap:10px 25px}
.topic-links a{position:relative;color:var(--brand);font-size:14px;font-weight:800;padding-left:15px}
.topic-links a:before{content:"";position:absolute;left:0;top:.7em;width:6px;height:6px;border-radius:50%;background:var(--green)}
.topic-links a:hover{color:var(--brand-dark)}
.notice-bar{display:flex;align-items:center;gap:18px;margin:2px 0;padding:20px 24px;background:#edf7f4;border:1px solid #c9e7de;border-left:4px solid var(--green);border-radius:14px;color:#265e52}
.notice-bar strong{font-size:15px;color:var(--ink)}
.notice-bar span{font-size:14px}
.quick-faq{margin-top:86px}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:28px}
.section-head h2{font-size:32px;line-height:1.25;margin:0}
.section-head p{max-width:420px;color:var(--muted);margin:0;font-size:15px}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:15px;padding:20px 22px;transition:.2s}
.faq-item:hover{border-color:#accce9;box-shadow:var(--shadow)}
.faq-item h3{font-size:16px;margin:0 0 8px}
.faq-item p{color:var(--muted);font-size:14px;margin:0}
.next-step{padding:0 0 100px}
.next-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.next-card{display:flex;align-items:center;justify-content:space-between;gap:20px;background:#eaf4fc;border:1px solid #cfe2f2;border-radius:18px;padding:26px 28px;transition:.2s}
.next-card.secondary{background:#fff}
.next-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.next-card h3{margin:0 0 5px;font-size:19px}
.next-card p{margin:0;color:var(--muted);font-size:14px}
.arrow{color:var(--brand);font-size:24px;font-weight:700}
footer{background:#eef3f8;border-top:1px solid var(--line);padding:54px 0 22px;color:var(--muted)}
.footer-top{display:flex;align-items:end;justify-content:space-between;gap:20px;padding-bottom:30px;border-bottom:1px solid var(--line)}
.footer-brand{font-size:24px;font-weight:900;color:var(--ink);letter-spacing:-1px}
.footer-brand b{color:var(--brand)}
.footer-top p{margin:0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr .8fr;gap:35px;padding:34px 0}
.footer-col{display:flex;flex-direction:column;gap:7px;font-size:14px}
.footer-col h3{margin:0 0 7px;color:var(--ink);font-size:15px}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:20px;border-top:1px solid var(--line);font-size:12px}
.footer-bottom div{display:flex;gap:18px}
.footer-bottom a:hover{color:var(--brand)}
@media(max-width:900px){
 .container{width:min(calc(100% - 48px),720px)}
 .desktop-nav{display:none}.mobile-toggle{display:flex}.masthead{min-height:78px}
 .brand{font-size:24px}.brand-note{font-size:12px}
 .intro-grid,.guide-layout{grid-template-columns:1fr}
 .guide-cover{min-height:210px}
 .chapter-nav{position:static;display:flex;gap:7px;overflow-x:auto;white-space:nowrap;padding:10px}
 .chapter-nav h2{display:none}.chapter-nav a{border:0;padding:8px 12px}
 .chapter-nav a:hover,.chapter-nav a.active{padding-left:12px;background:#edf5fc;border-radius:8px}
}
@media(max-width:640px){
 .container{width:calc(100% - 32px)}
 .topbar-in{font-size:11px}.topbar-in span:last-child{display:none}
 .brand{font-size:20px;letter-spacing:-1px}.brand-note{display:none}
 .page-intro{padding:44px 0 38px}h1{font-size:36px;letter-spacing:-1.3px}
 .intro-copy{font-size:15px}.content-area{padding:58px 0 70px}
 .topic-card{padding:24px 20px}.topic-head{gap:13px}.topic-number{flex-basis:43px;font-size:24px}.topic-card h3{font-size:20px}
 .notice-bar{display:block;padding:17px}.notice-bar span{display:block;margin-top:5px}
 .quick-faq{margin-top:60px}.section-head{display:block}.section-head h2{font-size:27px}.section-head p{margin-top:10px}
 .faq-grid,.next-grid{grid-template-columns:1fr}
 .next-step{padding-bottom:70px}
 .footer-top,.footer-bottom{display:block}.footer-top p{margin-top:8px}.footer-grid{grid-template-columns:1fr 1fr;gap:26px 20px}.footer-bottom div{margin-top:12px}
}
@media(prefers-reduced-motion:reduce){
 html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}
}

/* roulang page: category1 */
:root{--brand:#135eab;--brand-dark:#0c4c8b;--ink:#10233a;--muted:#526579;--line:#dce5ef;--mist:#f7f9fc;--paper:#fff;--green:#168a72;--warm:#e8892b;--shadow:0 12px 30px rgba(18,49,78,.08);--shadow-lg:0 18px 42px rgba(18,49,78,.13);--radius:20px;--radius-sm:13px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--mist);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.7}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}button,input,select,textarea{font:inherit}button{cursor:pointer}.container{width:min(calc(100% - 64px),1240px);margin-inline:auto}.topbar{height:34px;border-bottom:1px solid var(--line);background:#f1f5f9;color:var(--muted);font-size:12px}.topbar-in{height:100%;display:flex;align-items:center;justify-content:space-between;gap:18px}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);transition:.2s ease}.masthead{min-height:92px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand-wrap{display:flex;align-items:center;gap:18px;min-width:0}.brand{font-size:29px;font-weight:900;letter-spacing:-1.8px;line-height:1.05;color:var(--ink);white-space:nowrap}.brand b{color:var(--brand)}.brand-note{padding-left:18px;border-left:1px solid var(--line);font-size:13px;color:var(--muted);white-space:nowrap}.desktop-nav{display:flex;align-items:center;gap:25px;height:92px}.nav-link{position:relative;height:100%;display:inline-flex;align-items:center;font-size:15px;font-weight:700;color:var(--muted);transition:.2s}.nav-link:hover,.nav-link.active{color:var(--brand)}.nav-link.active:after{content:"";position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--brand);border-radius:4px 4px 0 0}.nav-rule{height:4px;background:linear-gradient(90deg,var(--brand) 0 67%,#9ec4e8 67% 89%,var(--green) 89% 92%,transparent 92%)}.mobile-toggle{display:none;width:45px;height:45px;border:1px solid var(--line);border-radius:11px;background:#fff;color:var(--brand);align-items:center;justify-content:center}.mobile-panel{display:none}.mobile-panel.open{display:block;border-top:1px solid var(--line);background:#fff}.mobile-panel a{display:block;padding:14px 16px;border-bottom:1px solid var(--line);font-weight:700}.mobile-panel a:hover{color:var(--brand);background:#f3f8fd}.page-head{padding:72px 0 68px;background:#fff;border-bottom:1px solid var(--line)}.crumbs{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:24px}.crumbs a:hover{color:var(--brand)}.crumbs span{color:#9aabba}.head-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--brand);font-size:13px;font-weight:800;letter-spacing:.08em}.eyebrow:before{content:"01";display:grid;place-items:center;width:28px;height:28px;color:#fff;background:var(--brand);border-radius:50%;font-size:11px;letter-spacing:0}.page-head h1{font-size:clamp(38px,5vw,58px);line-height:1.18;letter-spacing:-2px;margin:18px 0 20px;max-width:720px}.lead{font-size:17px;color:var(--muted);max-width:700px;margin:0}.tag-row{display:flex;flex-wrap:wrap;gap:9px;margin-top:25px}.tag{display:inline-flex;align-items:center;padding:5px 11px;border:1px solid #cce0f1;border-radius:999px;color:var(--brand);background:#f3f8fd;font-size:12px;font-weight:800}.cover{min-height:275px;position:relative;overflow:hidden;border-radius:var(--radius);background:linear-gradient(145deg,#eaf4fc,#cfe4f5);border:1px solid #c4dced;box-shadow:var(--shadow)}.cover:before,.cover:after{content:"";position:absolute;border:1px solid rgba(19,94,171,.23);border-radius:50%}.cover:before{width:390px;height:390px;right:-110px;top:-160px;box-shadow:0 0 0 28px rgba(19,94,171,.06),0 0 0 56px rgba(19,94,171,.045)}.cover:after{width:170px;height:170px;left:-55px;bottom:-82px}.cover-copy{position:absolute;left:28px;bottom:25px;z-index:2}.cover-copy small{display:block;color:var(--brand);font-weight:900;letter-spacing:.12em;font-size:12px}.cover-copy strong{display:block;font-size:28px;line-height:1.25;margin-top:8px}.cover-index{position:absolute;right:27px;bottom:26px;color:var(--brand);font-weight:900;font-size:46px;opacity:.7}.content-section{padding:96px 0}.layout{display:grid;grid-template-columns:270px 1fr;gap:34px;align-items:start}.filter{position:sticky;top:126px;background:#fff;border:1px solid #e5ecf3;border-radius:var(--radius);box-shadow:var(--shadow);padding:23px}.filter h2{font-size:18px;margin:0 0 17px}.filter-group{padding:18px 0;border-top:1px solid var(--line)}.filter-group:first-of-type{border-top:0;padding-top:0}.filter-group h3{font-size:13px;margin:0 0 10px;color:var(--muted)}.filter a{display:flex;justify-content:space-between;padding:7px 0;font-size:14px;color:var(--muted);transition:.18s}.filter a:hover,.filter a.selected{color:var(--brand);font-weight:800}.filter a span{color:#9aabba;font-size:12px}.hint{margin-top:18px;padding:15px;border-radius:13px;background:#edf7f4;color:#356d61;font-size:13px}.results-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:22px}.results-head h2{font-size:30px;line-height:1.25;margin:0}.results-head p{margin:0;color:var(--muted);font-size:14px}.featured{display:grid;grid-template-columns:1.05fr .95fr;min-height:235px;margin-bottom:20px;background:#fff;border:1px solid #e5ecf3;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:.2s}.featured:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#accce9}.visual{position:relative;min-height:235px;background:linear-gradient(135deg,#176bb8,#9fc9e8)}.visual:before{content:"";position:absolute;inset:24px;border:1px solid rgba(255,255,255,.55);transform:skewX(-13deg)}.visual:after{content:"";position:absolute;width:180px;height:180px;border-radius:50%;right:13%;top:26px;border:19px solid rgba(255,255,255,.18);box-shadow:0 0 0 23px rgba(255,255,255,.08)}.visual-label{position:absolute;z-index:1;left:25px;bottom:21px;color:#fff;font-size:13px;font-weight:800;letter-spacing:.08em}.featured-body{padding:27px 30px}.index{color:var(--brand);font-size:12px;font-weight:900;letter-spacing:.08em}.featured h3,.item h3{font-size:21px;line-height:1.4;margin:8px 0 10px}.featured p,.item p{color:var(--muted);font-size:14px;margin:0}.meta{display:flex;gap:15px;flex-wrap:wrap;color:#778b9e;font-size:12px;margin-top:17px}.arrow{display:inline-flex;align-items:center;gap:8px;margin-top:19px;color:var(--brand);font-weight:800;font-size:14px}.arrow:hover{gap:12px}.items{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.item{background:#fff;border:1px solid #e5ecf3;border-radius:var(--radius);padding:23px;box-shadow:var(--shadow);transition:.2s}.item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#accce9}.item-top{display:flex;justify-content:space-between;align-items:center;gap:12px}.item h3{font-size:18px;margin-top:14px}.progress{height:4px;background:#eaf0f5;border-radius:4px;margin-top:20px;overflow:hidden}.progress span{display:block;width:68%;height:100%;background:var(--brand);border-radius:4px}.load-more{text-align:center;margin-top:31px}.btn{min-height:46px;padding:0 20px;display:inline-flex;align-items:center;justify-content:center;border-radius:11px;border:1px solid transparent;font-weight:800;font-size:15px;transition:transform .18s,background .18s,border-color .18s,box-shadow .18s}.btn-primary{color:#fff;background:var(--brand);box-shadow:0 8px 16px rgba(19,94,171,.18)}.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 11px 20px rgba(19,94,171,.25)}.btn-secondary{color:var(--brand);background:#fff;border-color:#9fc2e5}.btn-secondary:hover{background:#eef6fd;transform:translateY(-1px)}.btn:active{transform:translateY(0)}.cta{padding:58px 0;background:#eaf4fc;border-top:1px solid #d3e4f2;border-bottom:1px solid #d3e4f2}.cta-grid{display:flex;align-items:center;justify-content:space-between;gap:28px}.cta h2{font-size:32px;line-height:1.3;margin:0 0 10px}.cta p{color:var(--muted);margin:0;max-width:650px}.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex-shrink:0}footer{padding:55px 0 20px;background:#f0f4f8;color:var(--muted)}.footer-top{display:flex;align-items:end;justify-content:space-between;gap:25px;padding-bottom:30px;border-bottom:1px solid var(--line)}.footer-brand{font-size:25px;font-weight:900;color:var(--ink);letter-spacing:-1px}.footer-brand b{color:var(--brand)}.footer-top p{margin:0;font-size:13px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr .8fr;gap:30px;padding:34px 0}.footer-col{display:flex;flex-direction:column;gap:8px;font-size:13px}.footer-col h3{color:var(--ink);font-size:14px;margin:0 0 6px}.footer-col a:hover{color:var(--brand)}.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding-top:20px;font-size:12px}.footer-bottom div{display:flex;gap:18px}.footer-bottom a:hover{color:var(--brand)}:focus-visible{outline:3px solid rgba(19,94,171,.35);outline-offset:3px}@media(max-width:900px){.container{width:min(calc(100% - 48px),680px)}.desktop-nav{display:none}.mobile-toggle{display:flex}.masthead{min-height:78px}.brand{font-size:24px}.brand-note{font-size:12px}.mobile-panel{display:none}.mobile-panel.open{display:block}.head-grid,.featured{grid-template-columns:1fr}.cover{min-height:220px}.layout{grid-template-columns:1fr}.filter{position:static}.items{grid-template-columns:repeat(2,minmax(0,1fr))}.cta-grid{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.container{width:calc(100% - 32px)}.topbar{height:auto;min-height:34px}.topbar-in{padding:7px 0}.topbar-in span:last-child{display:none}.page-head{padding:48px 0}.page-head h1{font-size:38px;letter-spacing:-1.4px}.lead{font-size:16px}.content-section{padding:60px 0}.items{grid-template-columns:1fr}.featured-body{padding:23px}.results-head{display:block}.results-head p{margin-top:8px}.cta{padding:45px 0}.cta h2{font-size:28px}.cta-actions,.cta-actions .btn{width:100%}.footer-top,.footer-bottom{display:block}.footer-top p{margin-top:8px}.footer-bottom div{margin-top:12px;flex-wrap:wrap}.footer-grid{gap:24px;padding:28px 0}.brand-wrap{gap:10px}.brand-note{display:none}.masthead{gap:12px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}