/* roulang page: index */
:root{
  --primary:#2E7CF6;
  --primary-dark:#1D5FBF;
  --teal:#23B3A4;
  --amber:#F6C453;
  --red:#E4573D;
  --green:#0F9F7A;
  --page-bg:#F7F9FC;
  --blue-pale:#EAF2FF;
  --faq-bg:#F1F5FA;
  --soft:#F0F3F7;
  --line:#E4EAF2;
  --line-strong:#C6D4E3;
  --title:#16283B;
  --text:#3E4F61;
  --text-weak:#72869B;
  --white:#ffffff;
  --radius:16px;
  --radius-lg:24px;
  --shadow-sm:0 2px 10px rgba(27,48,80,.06);
  --shadow-md:0 10px 24px rgba(21,66,125,.08);
  --shadow-primary:0 10px 16px rgba(46,124,246,.18);
  --space-section:96px;
  --font-main:-apple-system,BlinkMacSystemFont,"Inter","Helvetica Neue","PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-main);background:var(--page-bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4,p{margin:0;color:var(--title)}
button,input,select{font-family:inherit;font-size:inherit;line-height:inherit}
button{cursor:pointer}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--space-section) 0}
.section--white{background:var(--white)}
.section--softblue{background:var(--page-bg)}
.section--faq{background:var(--faq-bg)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-label{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--primary-dark);background:var(--blue-pale);padding:6px 14px;border-radius:999px}
.section-label::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal)}
.section-title{font-size:32px;line-height:1.35;letter-spacing:-.5px;margin-top:12px}
.section-sub{font-size:16px;color:var(--text-weak);margin-top:10px;max-width:680px}
.section-more{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--primary-dark);white-space:nowrap;transition:gap .2s}
.section-more:hover{gap:12px;color:var(--primary)}
/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 28px;border-radius:10px;font-weight:600;font-size:15px;border:1px solid transparent;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s,color .2s;vertical-align:middle}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-primary)}
.btn-secondary{background:#fff;border-color:var(--line-strong);color:var(--primary)}
.btn-secondary:hover{border-color:var(--primary);color:var(--primary-dark);box-shadow:var(--shadow-sm);transform:translateY(-2px)}
.btn-light{background:#fff;border-color:#fff;color:var(--primary-dark);box-shadow:0 10px 20px rgba(15,45,90,.16)}
.btn-light:hover{background:#F4F8FF;transform:translateY(-2px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.7);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.14);border-color:#fff;transform:translateY(-2px)}
.btn-sm{min-height:42px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.link-text{display:inline-flex;align-items:center;gap:5px;font-weight:600;color:var(--primary);border-bottom:1px dashed rgba(46,124,246,.4);padding-bottom:2px;transition:color .2s,gap .2s}
.link-text:hover{color:var(--primary-dark);gap:10px}
/* Tags and badges */
.tag{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--blue-pale);color:var(--primary-dark);font-size:13px;font-weight:500;padding:4px 12px;border-radius:999px}
.tag--green{background:#E3F6F1;color:#0B8265}
.tag--amber{background:#FFF4D8;color:#9A6A00}
.tag--news{background:var(--teal);color:#fff}
.status-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 3px rgba(35,179,164,.16)}
/* Announcement bar */
.announce-bar{position:relative;z-index:120;background:var(--blue-pale);border-bottom:1px solid #D8E7FF;min-height:36px;display:flex;align-items:center}
.announce-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;gap:20px;width:100%}
.announce-text{display:flex;align-items:center;gap:10px;font-size:13px;line-height:36px;color:#214B85;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.announce-badge{flex:0 0 auto;font-size:12px;color:#0B8265;background:#fff;border:1px solid #BFE4D9;padding:1px 10px;border-radius:999px;display:inline-flex;align-items:center;gap:5px}
.announce-badge i{width:5px;height:5px;border-radius:50%;background:var(--teal)}
.announce-close{flex:0 0 auto;margin-left:auto;width:30px;height:30px;border:0;background:transparent;color:#214B85;font-size:20px;line-height:1;border-radius:50%;transition:background .2s;display:inline-flex;align-items:center;justify-content:center}
.announce-close:hover{background:rgba(46,124,246,.14)}
/* Header */
.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 1px 0 rgba(22,40,59,.02)}
.site-nav{display:flex;align-items:center;height:72px;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:40px;height:40px;border-radius:12px;background:var(--primary);color:#fff;font-weight:800;font-size:15px;letter-spacing:.5px;display:inline-flex;align-items:center;justify-content:center;box-shadow:0 6px 14px rgba(46,124,246,.22)}
.brand-name{display:flex;flex-direction:column;line-height:1.15;color:var(--title)}
.brand-name strong{font-size:19px;font-weight:800;letter-spacing:.2px}
.brand-name em{font-style:normal;font-size:11px;color:var(--text-weak);margin-top:2px}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-link{display:inline-flex;align-items:center;height:44px;padding:0 12px;font-weight:500;font-size:15px;color:var(--text);border-radius:8px;position:relative;transition:background .2s,color .2s}
.nav-link:hover{color:var(--primary);background:rgba(46,124,246,.06)}
.nav-link.is-active{color:var(--primary-dark);font-weight:700}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:5px;height:3px;border-radius:99px;background:var(--primary)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:14px}
.nav-trigger{display:none;width:44px;height:44px;border:0;background:#F0F3F7;border-radius:10px;align-items:center;justify-content:center;gap:5px;flex-direction:column;pointer-events:auto;transition:background .2s}
.nav-trigger:hover{background:var(--blue-pale)}
.nav-trigger span{width:18px;height:2px;background:var(--title);border-radius:2px;display:block}
/* Hero */
.hero{position:relative;background-color:#F2F7FD;overflow:hidden;padding:84px 0 56px}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(46,124,246,.10) 1.5px,transparent 1.5px);background-size:26px 26px;pointer-events:none}
.hero-inner{position:relative;display:grid;grid-template-columns:1.02fr .98fr;gap:64px;align-items:center}
.hero-kicker{display:inline-flex;align-items:center;gap:9px;font-size:14px;font-weight:600;color:var(--primary-dark);background:rgba(255,255,255,.85);border:1px solid #CFE0FA;padding:7px 15px;border-radius:999px;margin-bottom:22px;backdrop-filter:none}
.hero-title{font-size:44px;line-height:1.25;letter-spacing:-1px;font-weight:800;color:var(--title)}
.hero-title span{color:var(--primary)}
.hero-sub{font-size:17px;line-height:1.8;color:var(--text-weak);max-width:560px;margin-top:20px}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:34px}
.hero-proof{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:42px;max-width:640px}
.proof-item{background:rgba(255,255,255,.86);border:1px solid #E3EDF7;border-radius:14px;padding:14px 16px;box-shadow:var(--shadow-sm)}
.proof-item strong{font-size:22px;font-weight:800;color:var(--title);display:block;line-height:1.3}
.proof-item span{font-size:12px;color:var(--text-weak)}
.hero-visual{position:relative}
.hero-figure{position:relative;border-radius:24px;overflow:hidden;border:1px solid #D8E7FF;box-shadow:0 24px 48px rgba(29,95,191,.16)}
.hero-figure img{width:100%;height:540px;object-fit:cover}
.hero-visual-card{position:absolute;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-md);padding:16px 18px;z-index:2;display:flex;gap:12px;align-items:flex-start}
.hero-visual-card--top{top:68px;left:-26px;max-width:260px}
.hero-visual-card--bottom{bottom:64px;right:-20px;max-width:270px}
.vc-ico{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.vc-ico--blue{background:var(--blue-pale);color:var(--primary)}
.vc-title{font-size:14px;font-weight:700;color:var(--title)}
.vc-text{font-size:12px;line-height:1.55;color:var(--text-weak);margin-top:4px}
.vc-num{margin-top:7px;font-size:18px;font-weight:800;color:var(--primary-dark);line-height:1.2}
/* Steps */
.steps-section{background:var(--page-bg)}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;align-items:start}
.step-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px 28px 28px;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s,border-color .25s}
.step-card:nth-child(2){margin-top:34px}
.step-card:hover{border-color:var(--line-strong);box-shadow:var(--shadow-md);transform:translateY(-5px)}
.step-top{display:flex;justify-content:space-between;align-items:flex-start}
.step-no{font-size:48px;font-weight:800;line-height:.9;color:rgba(46,124,246,.15);letter-spacing:-2px;font-family:"Inter","Helvetica Neue",sans-serif}
.step-icon{width:48px;height:48px;border-radius:14px;background:var(--blue-pale);color:var(--primary);display:flex;align-items:center;justify-content:center}
.step-card h3{font-size:20px;font-weight:700;margin-top:24px;color:var(--title)}
.step-card p{font-size:15px;line-height:1.8;color:var(--text-weak);margin-top:12px}
.step-link{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14px;font-weight:600;color:var(--primary)}
/* Cases */
.case-section{background:#fff}
.case-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:24px}
.case-card{grid-column:span 2;background:var(--page-bg);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;transition:box-shadow .25s,border-color .25s,transform .25s;display:flex;flex-direction:column}
.case-card--feature{grid-column:span 3}
.case-card:hover{box-shadow:var(--shadow-md);border-color:var(--line-strong);transform:translateY(-4px)}
.case-media{overflow:hidden;border-radius:var(--radius-lg) var(--radius-lg) 0 0;aspect-ratio:16/10;background:#E9F0F7}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.case-card:hover .case-media img{transform:scale(1.04)}
.case-body{display:flex;flex-direction:column;padding:20px 22px;flex:1}
.case-card--feature .case-body{padding:24px 26px}
.case-top{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.case-name{font-size:18px;font-weight:700;color:var(--title);line-height:1.4}
.case-card--feature .case-name{font-size:21px}
.case-desc{font-size:14px;line-height:1.75;color:var(--text-weak);margin-top:6px}
.case-data{display:flex;flex-wrap:wrap;gap:10px;margin-top:auto;padding-top:18px}
.data-chip{background:#fff;border:1px solid var(--line);border-radius:10px;padding:7px 12px;font-size:13px;color:var(--text-weak);line-height:1.4}
.data-chip strong{display:block;color:var(--primary-dark);font-size:18px;font-weight:800;line-height:1.2}
/* CMS / news */
.cms-section{background:var(--page-bg)}
.news-head .section-title{margin-bottom:0}
.news-empty{display:flex;align-items:center;justify-content:center;min-height:200px;background:#fff;border:1px dashed #C6D4E3;border-radius:var(--radius);color:var(--text-weak);font-size:15px}
.news-feature{display:grid;grid-template-columns:.82fr 1.18fr;gap:0;background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-sm);transition:box-shadow .25s,border-color .25s,transform .25s;margin-bottom:18px}
.news-feature:hover{border-color:var(--line-strong);box-shadow:var(--shadow-md);transform:translateY(-3px)}
.news-feature-media{position:relative;min-height:260px;overflow:hidden;background:#EAF1F8}
.news-feature-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.news-feature:hover .news-feature-media img{transform:scale(1.04)}
.news-feature-body{padding:30px 34px;display:flex;flex-direction:column;justify-content:center}
.news-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.news-time{font-size:13px;color:var(--text-weak)}
.news-feature-body h3{font-size:24px;line-height:1.5;font-weight:800}
.news-feature-summary{font-size:16px;line-height:1.85;color:var(--text-weak);margin-top:14px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-more{align-self:flex-start;margin-top:18px;font-size:15px;font-weight:700;color:var(--primary)}
.news-row{display:flex;align-items:center;gap:20px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:17px 20px;margin-bottom:12px;transition:border-color .2s,box-shadow .2s,transform .2s}
.news-row:last-of-type{margin-bottom:0}
.news-row:hover{border-color:var(--line-strong);box-shadow:var(--shadow-sm);transform:translateX(5px)}
.news-row-main{flex:1 1 auto;min-width:0}
.news-row-main h3{font-size:17px;font-weight:700;line-height:1.5;white-space:nowrap;text-overflow:ellipsis;overflow:hidden}
.news-row-main p{font-size:14px;color:var(--text-weak);margin-top:4px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.news-row-meta{flex:0 0 228px;display:flex;align-items:center;gap:14px;justify-content:flex-end}
.news-cattag{font-size:13px;color:var(--primary-dark);background:var(--blue-pale);border-radius:999px;padding:3px 12px;white-space:nowrap}
.news-read{font-size:14px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:5px;white-space:nowrap}
.news-read i{font-style:normal;transition:transform .2s}
.news-row:hover .news-read i{transform:translateX(4px)}
/* CTA */
.cta-section{padding:76px 0}
.cta-panel{position:relative;background:var(--primary);border-radius:22px;overflow:hidden;display:flex;align-items:center;justify-content:space-between;gap:30px;padding:56px 62px;box-shadow:0 22px 44px rgba(46,124,246,.22)}
.cta-panel::after{content:"";position:absolute;width:210px;height:210px;right:-70px;bottom:-90px;border-radius:50%;background:rgba(246,196,83,.22)}
.cta-panel::before{content:"";position:absolute;width:110px;height:110px;left:-34px;top:-30px;border-radius:50%;background:rgba(255,255,255,.10)}
.cta-copy{position:relative;z-index:2;max-width:680px;color:#fff}
.cta-copy h2{font-size:28px;line-height:1.4;color:#fff;font-weight:800}
.cta-copy p{color:#DCEAFD;margin-top:12px;font-size:16px;line-height:1.8}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}
/* FAQ */
.faq-wrap{max-width:920px;margin:0 auto}
.faq-head{text-align:center}
.faq-items{margin-top:44px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden;transition:box-shadow .2s,border-color .2s}
.faq-item.is-open{border-color:#BBD4F6;box-shadow:var(--shadow-sm)}
.faq-question{display:flex;align-items:center;justify-content:space-between;width:100%;min-height:62px;padding:14px 22px;text-align:left;background:#fff;border:0;gap:20px}
.faq-text{font-size:16px;line-height:1.6;font-weight:600;color:var(--title);flex:1}
.faq-icon{position:relative;width:28px;height:28px;border-radius:50%;background:var(--blue-pale);flex:0 0 auto;transition:background .25s,transform .25s}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px;transition:all .25s}
.faq-icon::before{left:9px;right:9px;top:50%;height:2px;transform:translateY(-50%)}
.faq-icon::after{top:9px;bottom:9px;left:50%;width:2px;transform:translateX(-50%)}
.faq-item.is-open .faq-icon{background:var(--primary)}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:#fff}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-answer-inner{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--text-weak);border-top:1px solid #F0F3F7;padding-top:16px}
.faq-item.is-open .faq-answer{max-height:260px}
/* Form coop */
.coop-section{padding-bottom:96px}
.coop-card{display:grid;grid-template-columns:1fr 1.05fr;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden}
.coop-intro{padding:48px;background:#F4F8FE;border-right:1px solid #E3EDF7}
.coop-intro .section-title{font-size:28px;line-height:1.4;margin-top:16px}
.coop-intro p{font-size:15px;color:var(--text-weak);margin-top:16px;line-height:1.8}
.coop-list{margin:24px 0 0;display:grid;gap:14px}
.coop-list li{display:flex;gap:10px;font-size:14px;color:var(--text);line-height:1.7}
.coop-list li::before{content:"✓";color:var(--teal);font-weight:800;flex:0 0 auto}
.coop-form-side{padding:48px;display:flex;flex-direction:column;justify-content:center}
.coop-form-side h3{font-size:20px;font-weight:700;color:var(--title);margin-bottom:6px}
.coop-form-side>p{font-size:14px;color:var(--text-weak);margin-bottom:24px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px 16px}
.form-field{display:flex;flex-direction:column;gap:6px}
.form-field label{font-size:13px;font-weight:600;color:var(--title)}
.form-field input,.form-field select,.form-field .select-wrap{width:100%}
.form-control{width:100%;height:48px;border:1px solid #D5DFEB;background:#fff;border-radius:9px;padding:0 14px;font-size:14px;color:var(--title);outline:none;transition:border-color .2s,box-shadow .2s;appearance:none;-webkit-appearance:none}
.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(46,124,246,.14)}
.select-wrap{position:relative}
.select-wrap select{padding-right:42px;cursor:pointer}
.select-wrap::after{content:"";position:absolute;right:16px;top:50%;width:8px;height:8px;border-right:2px solid #72869B;border-bottom:2px solid #72869B;transform:translateY(-70%) rotate(45deg);pointer-events:none}
.form-submit{margin-top:18px}
.privacy-note{font-size:12px;line-height:1.6;color:var(--text-weak);margin-top:14px}
.form-success{display:none;margin-top:12px;background:#E3F6F1;color:#0B8265;border:1px solid #BDE8DC;border-radius:8px;padding:12px 14px;font-size:14px}
.form-success.show{display:block}
/* Footer */
.site-footer{background:#131D31;color:#A9B9CB;padding-top:70px}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:56px}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand .brand-name strong{color:#fff}
.footer-brand .brand-name em{color:#7E91A8}
.footer-brand p{color:#A9B9CB;font-size:14px;line-height:1.85;margin-top:18px;max-width:320px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.footer-col ul li{margin-bottom:11px}
.footer-col a{color:#A9B9CB;font-size:14px;transition:color .2s,padding-left .2s;display:inline-flex;align-items:center}
.footer-col a:hover{color:#fff;padding-left:4px}
.footer-contact p{font-size:14px;line-height:2;color:#A9B9CB}
.footer-contact p a{color:#A9B9CB;transition:color .2s}
.footer-contact p a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.09);padding:22px 0;text-align:center;font-size:13px;color:#7E91A8}
/* Drawer */
.drawer-overlay{position:fixed;inset:0;background:rgba(16,32,52,.38);z-index:199;opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s}
.drawer-overlay.show{opacity:1;visibility:visible}
.nav-drawer{position:fixed;top:0;right:0;bottom:0;width:252px;background:#fff;z-index:200;transform:translateX(103%);transition:transform .3s cubic-bezier(.4,0,.2,1);visibility:hidden;display:flex;flex-direction:column;padding:24px 18px;box-shadow:-16px 0 40px rgba(12,36,64,.16)}
.nav-drawer.show{transform:translateX(0);visibility:visible}
.drawer-brand{margin-bottom:22px}
.drawer-nav li{margin-bottom:4px}
.drawer-nav a{display:flex;height:46px;align-items:center;justify-content:space-between;padding:0 12px;font-size:15px;color:var(--text);background:#F7F9FC;border-radius:9px;font-weight:500;transition:color .2s,background .2s}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--primary-dark);background:var(--blue-pale)}
.drawer-nav .drawer-arrow{color:#B0C0D0;font-weight:400}
.drawer-ctas{margin-top:24px;display:grid;gap:10px}
/* Responsive */
@media (max-width:1100px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-visual{max-width:720px;margin:0 auto;width:100%}
  .hero-figure img{height:440px}
  .hero-proof{max-width:none}
  .footer-top{grid-template-columns:1fr 1fr;gap:36px}
  .coop-card{grid-template-columns:1fr}
  .coop-intro{border-right:0;border-bottom:1px solid #E3EDF7}
}
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-actions .btn-secondary{display:none}
  .nav-trigger{display:inline-flex}
  .section{padding:72px 0}
  .case-grid{grid-template-columns:1fr 1fr}
  .case-card,.case-card--feature{grid-column:span 1}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:60px 0}
  .section-head{align-items:flex-start;flex-direction:column}
  .section-title{font-size:27px}
  .hero{padding:56px 0 52px}
  .hero-title{font-size:32px}
  .hero-sub{font-size:15px}
  .hero-actions .btn{flex:1 1 auto}
  .hero-proof{grid-template-columns:repeat(2,1fr);gap:10px}
  .steps-grid{grid-template-columns:1fr;gap:18px}
  .step-card:nth-child(2){margin-top:0}
  .news-feature{grid-template-columns:1fr}
  .news-feature-media{min-height:220px}
  .news-feature-body{padding:24px}
  .news-feature-body h3{font-size:20px}
  .news-row{flex-direction:column;align-items:flex-start;padding:18px}
  .news-row-main h3{white-space:normal}
  .news-row-main p{-webkit-line-clamp:2}
  .news-row-meta{flex:0 0 auto;width:100%;justify-content:flex-start;margin-top:12px}
  .faq-text{font-size:15px}
  .cta-section{padding:44px 0}
  .cta-panel{flex-direction:column;align-items:flex-start;padding:36px 28px}
  .cta-copy h2{font-size:23px}
  .form-grid{grid-template-columns:1fr}
  .form-control{height:46px}
  .coop-intro,.coop-form-side{padding:34px 26px}
  .footer-top{grid-template-columns:1fr;gap:28px;padding-bottom:38px}
  .footer-brand p{max-width:none}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .site-nav{height:64px;gap:10px}
  .brand-name em{display:none}
  .brand-mark{width:36px;height:36px;font-size:14px;border-radius:10px}
  .brand-name strong{font-size:17px}
  .nav-actions .btn-primary{padding:0 13px;font-size:13px;min-height:40px}
  .announce-inner{padding:0 12px}
  .announce-text{max-width:240px}
  .hero-title{font-size:28px}
  .hero-visual-card--top{left:8px;top:16px;max-width:210px;padding:12px 14px}
  .hero-visual-card--bottom{right:8px;bottom:22px;max-width:210px;padding:12px 14px}
  .hero-figure img{height:360px}
  .hero-actions .link-text{width:100%}
  .case-grid{grid-template-columns:1fr}
  .case-card,.case-card--feature{grid-column:span 1}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .coop-form-side{padding-top:28px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root {
  --primary: #2E7CF6;
  --primary-hover: #1D5FBF;
  --primary-soft: #EAF2FF;
  --accent: #23B3A4;
  --warn: #F6C453;
  --danger: #E4573D;
  --bg: #F7F9FC;
  --card-bg: #FFFFFF;
  --heading: #16283B;
  --text: #3E4F61;
  --muted: #72869B;
  --border: #E4EAF2;
  --border-hover: #C6D4E3;
  --footer-bg: #132338;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow: 0 2px 10px rgba(27,48,80,.06);
  --shadow-hover: 0 14px 28px rgba(21,66,125,.08);
  --container: 1200px;
  --content: 760px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  font-family: "HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Inter",sans-serif;
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; }
ul, ol { list-style: none; }
input, select, textarea, button { font: inherit; }
button { cursor: pointer; }
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding-left: 24px; padding-right: 24px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  background: transparent;
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  line-height: 1.2;
  transition: all .25s ease;
}
.btn:focus-visible { outline: 3px solid rgba(46,124,246,.32); outline-offset: 2px; }
.btn-primary { background: var(--primary); color:#fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 10px 18px rgba(46,124,246,.22); }
.btn-primary:active { transform: translateY(1px); box-shadow: none; }
.btn-secondary { background:#fff; color: var(--primary); border:1px solid var(--border-hover); }
.btn-secondary:hover { border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-2px); }
.btn-secondary:active { transform: translateY(1px); }
.btn-sm { min-height: 40px; padding: 8px 18px; border-radius: 9px; font-size: 14px; }
.btn-ghost { color: var(--primary); background: transparent; padding: 12px 8px; }
.btn-ghost:hover { color: var(--primary-hover); }
.btn-ghost .arrow { margin-left: 4px; transition: transform .2s; }
.btn-ghost:hover .arrow { transform: translateX(4px); }

.site-header {
  background: rgba(255,255,255,.97);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 60;
}
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 72px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-mark {
  width: 40px;
  height: 40px;
  background: var(--primary);
  border-radius: 12px;
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 1px;
  box-shadow: 0 6px 14px rgba(46,124,246,.26);
}
.brand-name { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name strong { color: var(--heading); font-size: 18px; font-weight: 700; letter-spacing: .5px; }
.brand-name em { font-style: normal; font-size: 12px; color: var(--muted); letter-spacing: .6px; }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-link {
  padding: 8px 16px;
  color: var(--heading);
  font-size: 15px;
  font-weight: 500;
  border-radius: 8px;
  position: relative;
  transition: color .2s, background .2s;
}
.nav-link:hover { color: var(--primary); background: var(--primary-soft); }
.nav-link.is-active { font-weight: 600; color: var(--primary); background: var(--primary-soft); }
.nav-link.is-active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 3px;
  border-radius: 3px;
  background: var(--primary);
}
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-trigger { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; border: 1px solid var(--border); border-radius: 10px; background: #fff; padding: 10px; }
.nav-trigger span { display: block; height: 2px; background: var(--heading); border-radius: 2px; transition: .3s; }

.breadcrumb-bar { background: #fff; border-bottom: 1px solid #eef3f8; }
.breadcrumb-list { display: flex; align-items: center; flex-wrap: nowrap; min-height: 48px; gap: 8px; font-size: 14px; color: var(--muted); overflow: hidden; }
.breadcrumb-list a { color: var(--muted); transition: color .2s; }
.breadcrumb-list a:hover { color: var(--primary); }
.breadcrumb-list .sep { color: #b9c7d8; user-select: none; }
.breadcrumb-list .crumb-now { max-width: 340px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--heading); font-weight: 500; }
.breadcrumb-list .crumb-now:hover { cursor: default; }

.article-page .container { max-width: var(--container); }
.article-wrap { max-width: 1080px; margin: 0 auto; padding: 44px 0 24px; }
.article-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 56px 64px 48px;
}
.article-head { max-width: var(--content); margin: 0 auto 24px; }
.article-head h1 {
  color: var(--heading);
  font-size: 38px;
  line-height: 1.35;
  letter-spacing: .5px;
  margin-bottom: 20px;
  font-weight: 700;
}
.article-meta { display: flex; flex-wrap: wrap; gap: 10px 18px; }
.meta-chip { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); background: #f4f7fb; border-radius: 40px; padding: 5px 14px; border: 1px solid var(--border); }
.meta-chip svg { width: 14px; height: 14px; stroke: var(--muted); }

.article-cover { margin: 0 auto 40px; max-width: var(--content); border-radius: var(--radius-md); overflow: hidden; position: relative; box-shadow: var(--shadow); }
.article-cover img { width: 100%; height: 360px; object-fit: cover; }

.article-body { max-width: var(--content); margin: 0 auto; padding-bottom: 8px; }
.cms-rich { color: var(--text); font-size: 17px; line-height: 1.9; word-break: break-word; }
.cms-rich p { margin-bottom: 28px; }
.cms-rich h2 {
  color: var(--heading);
  font-size: 24px;
  margin: 40px 0 18px;
  line-height: 1.5;
}
.cms-rich h3 { color: var(--heading); font-size: 20px; margin: 34px 0 14px; }
.cms-rich ul { margin: 0 0 28px 24px; list-style: disc; }
.cms-rich ol { margin: 0 0 28px 24px; list-style: decimal; }
.cms-rich li { margin-bottom: 8px; }
.cms-rich img { border-radius: 14px; margin: 28px 0; }
.cms-rich blockquote { margin: 28px 0; padding: 18px 24px; border-left: 4px solid var(--primary); background: var(--primary-soft); border-radius: 0 12px 12px 0; color: var(--heading); }
.cms-rich table { width: 100%; border-collapse: collapse; margin-bottom: 28px; display: block; overflow-x: auto; font-size: 15px; }
.cms-rich th, .cms-rich td { border: 1px solid var(--border); padding: 12px 14px; }
.cms-rich th { background: #f4f7fb; color: var(--heading); font-weight: 600; }

.article-tags { max-width: var(--content); margin: 24px auto 0; border-top: 1px solid #eef2f7; padding-top: 22px; display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.article-tags .tags-label { color: var(--muted); font-size: 13px; margin-right: 4px; }
.tag-pill { display: inline-block; padding: 5px 16px; background: var(--primary-soft); color: var(--primary-hover); border-radius: 40px; font-size: 13px; font-weight: 500; }
.tag-pill:hover { background: #d9e7ff; }

.article-related-area { max-width: 1080px; margin: 0 auto; padding: 32px 0 56px; }
.related-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.related-head h2 { color: var(--heading); font-size: 22px; }
.related-grid { display: grid; grid-template-columns: 1.3fr .9fr; gap: 24px; }
.related-cards { display: grid; gap: 16px; }
.related-post { display: flex; align-items: center; gap: 16px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); padding: 16px; transition: box-shadow .25s, transform .25s, border-color .25s; }
.related-post:hover { border-color: var(--border-hover); box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.related-thumb { flex: 0 0 108px; width: 108px; height: 78px; border-radius: 10px; overflow: hidden; background: var(--primary-soft); }
.related-thumb img { width: 100%; height: 100%; object-fit: cover; }
.related-info { min-width: 0; }
.related-info .rel-tag { color: var(--accent); font-size: 12px; font-weight: 600; }
.related-info .rel-title { font-size: 15px; color: var(--heading); font-weight: 600; line-height: 1.5; margin-top: 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.related-info .rel-more { font-size: 13px; color: var(--muted); margin-top: 4px; display: inline-flex; align-items: center; gap: 2px; }
.related-post:hover .rel-more { color: var(--primary); }
.related-entry { display: flex; flex-direction: column; align-items: flex-start; justify-content: center; gap: 14px; background: var(--primary-soft); border: 1px solid #d5e5ff; border-radius: var(--radius-md); padding: 26px 30px; }
.related-entry h3 { font-size: 17px; color: var(--heading); }
.related-entry p { font-size: 14px; color: var(--muted); }
.related-entry .btn { min-height: 42px; padding: 8px 20px; }

.article-empty { max-width: 640px; margin: 68px auto; background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow); text-align: center; padding: 64px 40px; }
.empty-icon { width: 88px; height: 88px; margin: 0 auto 24px; border-radius: 50%; background: var(--primary-soft); display: flex; align-items: center; justify-content: center; }
.empty-icon svg { width: 38px; height: 38px; stroke: var(--primary); }
.article-empty h1 { color: var(--heading); font-size: 28px; margin-bottom: 12px; }
.article-empty p { color: var(--muted); font-size: 15px; margin-bottom: 28px; }

.article-cta-section { padding: 0 0 64px; }
.cta-card { background: var(--primary); border-radius: var(--radius-lg); padding: 48px 56px; display: flex; align-items: center; justify-content: space-between; gap: 40px; color: #fff; box-shadow: 0 18px 36px rgba(29,95,191,.22); position: relative; overflow: hidden; }
.cta-card::after { content: ""; position: absolute; width: 320px; height: 320px; border-radius: 50%; right: -80px; top: -140px; background: rgba(255,255,255,.08); pointer-events: none; }
.cta-copy { max-width: 620px; position: relative; z-index: 1; }
.cta-copy .cta-eyebrow { color: rgba(255,255,255,.65); font-size: 14px; margin-bottom: 10px; letter-spacing: 1px; }
.cta-copy h2 { font-size: 30px; line-height: 1.4; margin-bottom: 14px; }
.cta-copy p { font-size: 16px; opacity: .9; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; position: relative; z-index: 2; flex-shrink: 0; }
.cta-actions .btn { min-width: 160px; }
.cta-actions .btn-light { background: #fff; color: var(--primary); border-color: #fff; }
.cta-actions .btn-light:hover { background: #eef5ff; border-color: #eef5ff; transform: translateY(-2px); }

.site-footer { background: var(--footer-bg); color: #c4d0de; margin-top: 28px; }
.site-footer .container { padding-top: 48px; padding-bottom: 24px; }
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: 40px; padding-bottom: 36px; }
.footer-brand .brand { margin-bottom: 18px; }
.footer-brand .brand-name strong { color: #fff; }
.footer-brand .brand-name em { color: #8ea4bc; }
.footer-brand p { font-size: 14px; line-height: 1.9; color: #a5b7ca; max-width: 300px; }
.footer-col h4, .footer-contact h4 { color: #fff; font-size: 16px; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a, .footer-contact a { color: #a5b7ca; font-size: 14px; transition: color .2s; }
.footer-col a:hover, .footer-contact a:hover { color: #fff; }
.footer-contact p { font-size: 14px; margin-bottom: 8px; color: #a5b7ca; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding-top: 20px; color: #70869e; font-size: 13px; }

@media (max-width: 1024px) {
  .site-nav { gap: 18px; }
  .nav-link { padding: 8px 12px; }
  .nav-actions { gap: 8px; }
  .article-card { padding: 44px 36px; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 72px;
    background: #fff;
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 14px 24px 22px;
    gap: 4px;
    box-shadow: 0 20px 30px rgba(32,53,84,.08);
  }
  .site-header.is-open .nav-links { display: flex; }
  .nav-link { width: 100%; padding: 14px 16px; }
  .nav-link.is-active::after { left: 16px; right: auto; width: 32px; }
  .nav-trigger { display: flex; }
  .nav-actions .btn-secondary { display: none; }
}

@media (max-width: 768px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .breadcrumb-list { overflow-x: auto; }
  .breadcrumb-list .crumb-now { max-width: 180px; }
  .article-wrap { padding-top: 24px; }
  .article-card { padding: 28px 20px 32px; border-radius: 18px; }
  .article-head h1 { font-size: 28px; line-height: 1.45; }
  .article-cover { border-radius: 12px; }
  .article-cover img { height: 220px; }
  .article-meta { gap: 8px 10px; }
  .meta-chip { font-size: 12px; }
  .cms-rich { font-size: 16px; line-height: 1.9; }
  .cms-rich h2 { font-size: 21px; }
  .related-grid { grid-template-columns: 1fr; }
  .related-post { padding: 14px; }
  .related-thumb { flex-basis: 90px; width: 90px; height: 72px; }
  .article-cta-section { padding-bottom: 24px; }
  .cta-card { flex-direction: column; text-align: left; padding: 36px 28px; align-items: flex-start; gap: 24px; }
  .cta-copy h2 { font-size: 24px; }
  .cta-actions .btn { width: 100%; min-width: 0; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .site-footer .container { padding-top: 38px; }
  .article-empty { padding: 40px 20px; }
  .article-empty h1 { font-size: 24px; }
}

@media (max-width: 520px) {
  .brand-mark { width: 36px; height: 36px; border-radius: 11px; font-size: 14px; }
  .brand-name strong { font-size: 16px; }
  .brand-name em { display: none; }
  .nav-actions .btn-sm { min-height: 38px; padding: 6px 14px; font-size: 13px; }
  .site-nav { min-height: 64px; }
  .site-header.is-open .nav-links { top: 64px; }
  .article-cover img { height: 170px; }
  .article-tags { gap: 8px; }
  .tag-pill { padding: 4px 12px; }
  .related-cards { gap: 12px; }
  .cta-card { border-radius: 16px; }
}

/* roulang page: category1 */
/* ===== design tokens ===== */
  :root {
    --primary: #2E7CF6;
    --primary-dark: #1D5FBF;
    --primary-soft: #EAF2FF;
    --accent-teal: #23B3A4;
    --warm: #F6C453;
    --bg: #F7F9FC;
    --card-bg: #ffffff;
    --line: #E4EAF2;
    --line-deep: #C6D4E3;
    --title: #16283B;
    --text: #3E4F61;
    --muted: #72869B;
    --gray-box: #F0F3F7;
    --danger: #E4573D;
    --success: #0F9F7A;
    --radius: 16px;
    --radius-lg: 24px;
    --shadow: 0 2px 10px rgba(27, 48, 80, .06);
    --shadow-hover: 0 14px 28px rgba(21, 66, 125, .08);
    --container: 1200px;
    --font-main: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Helvetica Neue", Arial, sans-serif;
    --font-num: Inter, "Helvetica Now", "Helvetica Neue", Arial, sans-serif;
    --transition: .25s ease;
  }

  /* ===== base / reset ===== */
  *,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  html {
    scroll-behavior: smooth;
  }
  body {
    font-family: var(--font-main);
    background: var(--bg);
    color: var(--text);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    font-size: 16px;
  }
  h1, h2, h3, h4 {
    color: var(--title);
    line-height: 1.35;
    font-weight: 700;
  }
  a {
    color: inherit;
    text-decoration: none;
  }
  img {
    max-width: 100%;
    display: block;
    border-radius: var(--radius);
  }
  ul {
    list-style: none;
  }
  input, select, button {
    font-family: inherit;
    font-size: 1rem;
  }
  button {
    cursor: pointer;
    border: 0;
    background: none;
  }
  .container {
    width: min(var(--container), 100% - 48px);
    margin-inline: auto;
  }
  :focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
  }

  /* ===== buttons ===== */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 26px;
    border-radius: 12px;
    font-weight: 600;
    line-height: 1;
    transition: background .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
    border: 1px solid transparent;
    white-space: nowrap;
  }
  .btn-primary {
    background: var(--primary);
    color: #ffffff;
  }
  .btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 16px rgba(46, 124, 246, .22);
  }
  .btn-primary:active {
    transform: translateY(1px);
    box-shadow: none;
  }
  .btn-secondary {
    background: var(--card-bg);
    color: var(--primary);
    border-color: var(--line-deep);
  }
  .btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary-dark);
    transform: translateY(-2px);
  }
  .btn-secondary:active {
    transform: translateY(1px);
  }
  .btn-sm {
    height: 40px;
    padding: 0 18px;
    border-radius: 10px;
    font-size: .9rem;
  }

  /* ===== badges & status ===== */
  .badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 28px;
    padding: 0 14px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 500;
  }
  .badge-green {
    background: rgba(35, 179, 164, .12);
    color: #177f75;
  }
  .badge-warm {
    background: rgba(246, 196, 83, .18);
    color: #926900;
  }
  .status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--success);
    display: inline-block;
  }
  .dot-wait {
    background: var(--warm);
  }

  /* ===== site header ===== */
  .site-header {
    background: #ffffff;
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 100;
  }
  .site-nav {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 28px;
    min-height: 72px;
  }
  .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }
  .brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: var(--primary);
    color: #fff;
    font-weight: 700;
    font-size: 15px;
    letter-spacing: .5px;
  }
  .brand-name {
    display: flex;
    flex-direction: column;
    line-height: 1.25;
  }
  .brand-name strong {
    color: var(--title);
    font-size: 19px;
    font-weight: 800;
    letter-spacing: 1px;
  }
  .brand-name em {
    font-style: normal;
    font-size: 11px;
    color: var(--muted);
    letter-spacing: 2px;
  }
  .nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
    justify-content: center;
  }
  .nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    height: 72px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    transition: color .2s ease;
  }
  .nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 12px;
    height: 3px;
    border-radius: 3px;
    background: var(--primary);
    opacity: 0;
    transition: opacity .2s ease;
  }
  .nav-link:hover {
    color: var(--primary);
  }
  .nav-link.is-active {
    color: var(--primary-dark);
    font-weight: 700;
  }
  .nav-link.is-active::after {
    opacity: 1;
  }
  .nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .nav-trigger {
    display: none;
    width: 42px;
    height: 42px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    border-radius: 10px;
    background: var(--gray-box);
    border: 1px solid var(--line);
  }
  .nav-trigger span {
    width: 18px;
    height: 2px;
    background: var(--title);
    border-radius: 4px;
    transition: transform .25s ease, opacity .2s ease;
  }
  .nav-trigger.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav-trigger.is-open span:nth-child(2) {
    opacity: 0;
  }
  .nav-trigger.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* ===== page hero ===== */
  .cat-hero {
    position: relative;
    background: var(--primary-soft);
    padding: 56px 0 44px;
    overflow: hidden;
  }
  .cat-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    opacity: .12;
    background-image: url("/assets/images/backpic/back-1.webp");
    background-size: cover;
    background-position: center;
    pointer-events: none;
  }
  .breadcrumb {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 20px;
  }
  .breadcrumb a {
    color: var(--primary);
  }
  .breadcrumb a:hover {
    text-decoration: underline;
  }
  .breadcrumb-item + .breadcrumb-item::before {
    content: "·";
    margin-right: 8px;
    color: var(--line-deep);
  }
  .cat-hero-inner {
    position: relative;
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 52px;
    align-items: center;
  }
  .cat-hero-content h1 {
    font-size: clamp(30px, 4vw, 42px);
    font-weight: 800;
    letter-spacing: .5px;
    margin: 14px 0 20px;
  }
  .cat-hero-content h1 span {
    color: var(--primary);
  }
  .hero-lead {
    font-size: 17px;
    color: var(--text);
    max-width: 620px;
    margin-bottom: 10px;
  }
  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin: 28px 0 20px;
  }
  .text-link {
    color: var(--primary);
    font-weight: 600;
    font-size: 15px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap .2s ease;
  }
  .text-link:hover {
    gap: 10px;
  }
  .hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 14px 30px;
    margin-top: 26px;
    padding-top: 20px;
    border-top: 1px solid rgba(46, 124, 246, .25);
  }
  .hero-stats-item strong {
    display: block;
    font-family: var(--font-num);
    font-size: 24px;
    color: var(--title);
    line-height: 1.3;
  }
  .hero-stats-item span {
    font-size: 13px;
    color: var(--muted);
  }
  .cat-hero-visual {
    position: relative;
    min-height: 360px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .hero-main-img {
    position: relative;
    z-index: 2;
    border-radius: var(--radius-lg);
    box-shadow: 0 18px 36px rgba(46, 124, 246, .16);
    width: 100%;
    height: 320px;
    object-fit: cover;
    border: 4px solid #fff;
  }
  .hero-float-card {
    position: absolute;
    z-index: 3;
    background: #fff;
    border-radius: 16px;
    box-shadow: var(--shadow-hover);
    border: 1px solid var(--line);
    padding: 16px 20px;
    font-size: 13px;
    color: var(--title);
    line-height: 1.6;
  }
  .hero-float-top {
    top: 12px;
    left: -16px;
    animation: floatY 4s ease-in-out infinite;
  }
  .hero-float-bottom {
    bottom: 6px;
    right: -12px;
    display: flex;
    align-items: center;
    gap: 12px;
    animation: floatY 4.6s ease-in-out infinite reverse;
  }
  .float-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--primary-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 17px;
  }
  @keyframes floatY {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
  }

  /* ===== category layout ===== */
  .cat-layout {
    display: grid;
    grid-template-columns: 256px 1fr;
    gap: 40px;
    padding: 64px 0 28px;
    align-items: start;
  }
  .cat-side {
    position: sticky;
    top: 96px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
  }
  .cat-side-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--muted);
    letter-spacing: 2px;
    padding: 0 10px 12px;
    border-bottom: 1px solid var(--line);
    margin-bottom: 10px;
  }
  .cat-side a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 8px 12px;
    margin-bottom: 2px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    border-left: 3px solid transparent;
    transition: background .2s ease, border-color .2s ease, color .2s ease;
  }
  .cat-side a:hover {
    background: var(--primary-soft);
    color: var(--primary-dark);
  }
  .cat-side a.is-active {
    background: var(--primary-soft);
    color: var(--primary-dark);
    border-left-color: var(--primary);
  }
  .cat-side .side-note {
    margin: 16px 8px 4px;
    padding-top: 14px;
    border-top: 1px solid var(--line);
    font-size: 12px;
    color: var(--muted);
    line-height: 1.7;
  }

  .cat-main-col {
    display: flex;
    flex-direction: column;
    gap: 34px;
    min-width: 0;
  }
  .cat-card {
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    padding: 36px;
    scroll-margin-top: 96px;
    transition: box-shadow .25s ease, border-color .25s ease;
  }
  .cat-card:hover {
    box-shadow: var(--shadow-hover);
    border-color: var(--line-deep);
  }
  .cat-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 16px;
  }
  .cat-card h2 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 12px;
  }
  .cat-card .card-title-sub {
    font-size: 16px;
    color: var(--muted);
    margin-bottom: 24px;
    max-width: 720px;
  }
  .cat-tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 18px;
  }
  .tag-capsule {
    height: 28px;
    display: inline-flex;
    align-items: center;
    padding: 0 13px;
    border-radius: 999px;
    background: var(--primary-soft);
    font-size: 12px;
    color: var(--primary-dark);
    font-weight: 600;
  }
  .tag-capsule.green {
    background: rgba(35, 179, 164, .12);
    color: #177f75;
  }
  .tag-capsule.warm {
    background: rgba(246, 196, 83, .18);
    color: #926900;
  }

  .mode-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 8px;
  }
  .mode-item {
    background: var(--gray-box);
    border-radius: var(--radius);
    padding: 24px;
    border-top: 3px solid var(--primary);
    transition: transform .25s ease, box-shadow .25s ease;
  }
  .mode-item:nth-child(2) {
    border-top-color: var(--accent-teal);
    transform: translateY(8px);
  }
  .mode-item:nth-child(3) {
    border-top-color: var(--warm);
  }
  .mode-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(21, 66, 125, .07);
  }
  .mode-item h3 {
    font-size: 18px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .mode-icon {
    width: 32px;
    height: 32px;
    border-radius: 9px;
    background: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-weight: 800;
    font-size: 14px;
    box-shadow: 0 2px 8px rgba(27, 48, 80, .08);
  }
  .mode-item p {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.7;
  }
  .mode-more {
    background: var(--primary-soft);
    border-radius: var(--radius);
    padding: 18px 24px;
    display: flex;
    gap: 14px;
    align-items: flex-start;
    margin-top: 20px;
    font-size: 14px;
    color: var(--text);
  }
  .mode-more b {
    color: var(--primary-dark);
  }
  .mode-more .arrow-big {
    font-size: 20px;
    flex-shrink: 0;
    color: var(--primary);
  }

  .process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin: 26px 0 14px;
  }
  .process-step {
    position: relative;
    background: var(--gray-box);
    border-radius: var(--radius);
    padding: 20px 18px;
    text-align: left;
    transition: transform .2s ease, box-shadow .2s ease;
  }
  .process-step:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
  }
  .step-no {
    font-family: var(--font-num);
    font-size: 32px;
    font-weight: 800;
    color: var(--warm);
    line-height: 1;
    display: block;
    margin-bottom: 12px;
  }
  .process-step h4 {
    font-size: 16px;
    margin-bottom: 6px;
  }
  .process-step p {
    font-size: 13px;
    color: var(--muted);
  }
  .process-tip {
    font-size: 13px;
    color: var(--muted);
    background: var(--primary-soft);
    border-radius: 10px;
    padding: 14px 18px;
    line-height: 1.7;
    margin-top: 12px;
  }
  .process-tip strong {
    color: var(--primary-dark);
  }

  .split-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
    align-items: center;
    margin-top: 10px;
  }
  .split-block img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }
  .check-list li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    font-size: 15px;
    padding: 10px 0;
    border-bottom: 1px dashed var(--line);
    line-height: 1.7;
  }
  .check-list li:last-child {
    border-bottom: 0;
  }
  .check-cos {
    color: var(--accent-teal);
    font-size: 18px;
    line-height: 1.5;
    flex-shrink: 0;
  }
  .check-list strong {
    color: var(--title);
    font-weight: 700;
  }

  .data-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin: 16px 0;
  }
  .data-card {
    border: 1px solid var(--line);
    background: #fbfdff;
    border-radius: var(--radius);
    padding: 22px;
    transition: box-shadow .25s ease, transform .25s ease;
  }
  .data-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
  }
  .data-card .num {
    color: var(--primary);
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
  }
  .data-card h4 {
    font-size: 17px;
    margin-bottom: 6px;
  }
  .data-card p {
    font-size: 14px;
    color: var(--muted);
  }

  .resource-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin: 16px 0 0;
  }
  .resource-item {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 18px;
    display: flex;
    gap: 14px;
    transition: border-color .2s, box-shadow .2s;
  }
  .resource-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
  }
  .res-icon {
    width: 42px;
    height: 42px;
    flex-shrink: 0;
    border-radius: 12px;
    background: var(--primary-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--primary);
  }
  .resource-item h4 {
    font-size: 16px;
    margin-bottom: 4px;
  }
  .resource-item p {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.6;
  }

  /* FAQ */
  .cat-faq-list {
    margin-top: 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .faq-item {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 0 18px;
    transition: border-color .2s, box-shadow .2s;
  }
  .faq-item:hover {
    border-color: var(--line-deep);
  }
  .faq-item[open] {
    border-color: var(--primary);
    box-shadow: var(--shadow);
  }
  .faq-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    min-height: 56px;
    cursor: pointer;
    list-style: none;
    font-weight: 600;
    color: var(--title);
  }
  .faq-summary::-webkit-details-marker {
    display: none;
  }
  .faq-summary .faq-toggle {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    background: var(--primary-soft);
    color: var(--primary-dark);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 400;
    transition: transform .25s ease, background .25s ease;
  }
  .faq-item[open] .faq-toggle {
    transform: rotate(45deg);
    background: var(--primary);
    color: #fff;
  }
  .faq-content {
    padding-bottom: 18px;
    color: var(--muted);
    font-size: 15px;
    max-width: 860px;
    line-height: 1.85;
  }

  /* CTA form */
  .cta-band {
    position: relative;
    background: var(--primary-soft);
    border-radius: var(--radius-lg);
    padding: 46px 48px;
    margin: 28px 0 64px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 42px;
    align-items: center;
    border: 1px solid rgba(46, 124, 246, .18);
    scroll-margin-top: 90px;
  }
  .cta-band::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0;
    width: 280px;
    height: 180px;
    background-image: url("/assets/images/coverpic/cover-6.png");
    background-size: cover;
    background-position: center;
    opacity: .1;
    border-radius: 0 0 var(--radius-lg) 0;
    pointer-events: none;
  }
  .cta-copy {
    position: relative;
    z-index: 1;
  }
  .cta-copy h2 {
    font-size: 28px;
    margin-bottom: 14px;
    font-weight: 800;
  }
  .cta-copy p {
    color: var(--muted);
    font-size: 15px;
    line-height: 1.8;
  }
  .cta-contacts {
    display: flex;
    gap: 18px;
    margin-top: 20px;
    flex-wrap: wrap;
  }
  .contact-pill {
    height: 40px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid var(--line);
    color: var(--text);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0 16px;
    font-size: 14px;
    box-shadow: var(--shadow);
  }
  .contact-pill i {
    color: var(--primary);
  }
  .contact-pill a {
    color: var(--primary-dark);
    font-weight: 600;
  }
  .coop-form {
    position: relative;
    z-index: 1;
    background: #fff;
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: 0 12px 28px rgba(46, 124, 246, .1);
  }
  .form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .form-field label {
    font-size: 13px;
    color: var(--title);
    font-weight: 600;
    display: block;
    margin-bottom: 6px;
  }
  .form-field input,
  .form-field select {
    width: 100%;
    height: 44px;
    border-radius: 10px;
    border: 1px solid #D5DFEB;
    background: #fff;
    padding: 0 14px;
    color: var(--text);
    transition: border-color .2s, box-shadow .2s;
    appearance: none;
  }
  .form-field select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2372869B' d='M6 8 0 0h12z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 34px;
  }
  .form-field input::placeholder {
    color: #a5b4c5;
  }
  .form-field input:focus,
  .form-field select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(46, 124, 246, .14);
  }
  .form-field-wide {
    grid-column: 1 / -1;
  }
  .form-submit-row {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
  }
  .privacy-note {
    font-size: 12px;
    color: var(--muted);
    line-height: 1.7;
    margin-top: 12px;
  }

  /* footer */
  .site-footer {
    background: #ffffff;
    border-top: 1px solid var(--line);
    padding: 56px 0 24px;
    margin-top: 36px;
  }
  .footer-top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
  }
  .footer-brand p {
    margin-top: 16px;
    font-size: 14px;
    color: var(--muted);
    max-width: 320px;
    line-height: 1.8;
  }
  .footer-col h4,
  .footer-contact h4 {
    font-size: 16px;
    color: var(--title);
    margin-bottom: 16px;
  }
  .footer-col li,
  .footer-contact p {
    margin-bottom: 10px;
    font-size: 14px;
    color: var(--text);
  }
  .footer-col a,
  .footer-contact a {
    color: var(--muted);
    transition: color .2s ease;
  }
  .footer-col a:hover,
  .footer-contact a:hover {
    color: var(--primary);
  }
  .footer-bottom {
    border-top: 1px solid var(--line);
    margin-top: 38px;
    padding-top: 20px;
    font-size: 13px;
    color: var(--muted);
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
  }
  .footer-bottom a {
    color: var(--muted);
  }
  .footer-bottom a:hover {
    color: var(--primary);
  }

  /* backtop */
  .backtop {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 20px rgba(46, 124, 246, .3);
    z-index: 20;
    border: 2px solid #fff;
    transition: background .2s, transform .2s;
  }
  .backtop:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
  }

  /* footers responsive and general responsive */
  @media (max-width: 1100px) {
    .mode-grid {
      grid-template-columns: 1fr 1fr;
    }
    .mode-item:nth-child(2) {
      transform: none;
    }
    .data-grid {
      grid-template-columns: 1fr 1fr;
    }
    .resource-grid {
      grid-template-columns: 1fr 1fr;
    }
    .footer-top {
      grid-template-columns: 1fr 1fr;
    }
  }

  @media (max-width: 991px) {
    .site-nav {
      grid-template-columns: 1fr auto;
      gap: 12px;
      min-height: 64px;
    }
    .nav-links {
      justify-content: flex-start;
      flex-direction: column;
      gap: 6px;
      grid-column: 1 / -1;
    }
    .nav-links {
      display: none;
    }
    .nav-link {
      height: auto;
      width: 100%;
      padding: 10px 8px;
      border-bottom: 1px solid var(--line);
    }
    .nav-link::after {
      display: none;
    }
    .nav-link.is-active {
      color: var(--primary);
      padding-left: 14px;
      border-left: 4px solid var(--primary);
    }
    .nav-trigger {
      display: inline-flex;
    }
    .nav-actions {
      display: flex;
      justify-content: flex-end;
    }
    .nav-actions .btn-secondary {
      display: none;
    }
    .nav-actions {
      grid-row: 1;
      grid-column: 2;
      margin-left: auto;
    }
    .nav-trigger {
      grid-row: 1;
      grid-column: 3;
      display: inline-flex;
    }
    body.menu-open .nav-links {
      display: flex;
      padding: 10px 0 16px;
    }
    .cat-hero-inner {
      grid-template-columns: 1fr;
      gap: 30px;
    }
    .cat-hero-visual {
      min-height: 280px;
    }
    .cat-layout {
      grid-template-columns: 1fr;
      gap: 24px;
    }
    .cat-side {
      position: relative;
      top: auto;
      display: flex;
      flex-wrap: wrap;
      overflow-x: auto;
      gap: 6px;
      align-items: center;
      padding: 12px;
    }
    .cat-side-title {
      width: 100%;
      border: 0;
      padding: 0 4px 6px;
      margin: 0;
    }
    .cat-side a {
      width: auto;
      margin: 0;
      padding: 6px 12px;
      border: 0;
      background: var(--gray-box);
      border-radius: 999px;
      white-space: nowrap;
    }
    .cat-side a.is-active {
      background: var(--primary);
      color: #fff;
    }
    .cat-side .side-note {
      display: none;
    }
    .split-block {
      grid-template-columns: 1fr;
    }
    .split-block img {
      height: 200px;
    }
    .cta-band {
      grid-template-columns: 1fr;
      padding: 30px;
      gap: 24px;
    }
    .cta-band::after {
      width: 160px;
      height: 100px;
    }
  }

  @media (max-width: 767px) {
    .container {
      width: calc(100% - 32px);
    }
    .cat-hero {
      padding: 36px 0 28px;
    }
    .cat-hero-inner {
      gap: 26px;
    }
    .cat-hero-content h1 {
      font-size: 28px;
    }
    .hero-actions .btn {
      width: calc(50% - 8px);
      padding: 0 12px;
      font-size: 14px;
    }
    .hero-actions {
      gap: 16px;
      align-items: stretch;
    }
    .hero-actions .text-link {
      width: 100%;
    }
    .hero-stats-item strong {
      font-size: 20px;
    }
    .cat-hero-visual {
      min-height: 220px;
    }
    .hero-main-img {
      height: 210px;
    }
    .hero-float-card {
      font-size: 12px;
      padding: 10px 12px;
    }
    .hero-float-top {
      left: 6px;
    }
    .hero-float-bottom {
      right: 6px;
    }
    .cat-layout {
      padding-top: 36px;
    }
    .cat-card {
      padding: 24px 20px;
      border-radius: 18px;
    }
    .cat-card h2 {
      font-size: 21px;
    }
    .mode-grid,
    .data-grid,
    .resource-grid {
      grid-template-columns: 1fr;
    }
    .mode-item,
    .data-card,
    .resource-item {
      padding: 18px;
    }
    .process-grid {
      grid-template-columns: 1fr 1fr;
    }
    .cta-copy h2 {
      font-size: 24px;
    }
    .coop-form {
      padding: 22px 18px;
    }
    .form-grid {
      grid-template-columns: 1fr;
    }
    .form-submit-row .btn {
      width: 100%;
    }
    .footer-top {
      grid-template-columns: 1fr;
      gap: 28px;
    }
    .footer-bottom {
      flex-direction: column;
    }
  }

  @media (max-width: 420px) {
    .brand-name em {
      letter-spacing: 1px;
    }
    .brand-name strong {
      font-size: 17px;
    }
    .nav-actions .btn {
      padding: 0 12px;
      font-size: 14px;
    }
    .process-grid {
      grid-template-columns: 1fr;
    }
    .hero-actions .btn {
      width: 100%;
    }
    .cta-band {
      padding: 24px 18px;
    }
    .contact-pill {
      width: 100%;
      justify-content: flex-start;
    }
    .privacy-note {
      font-size: 11px;
    }
  }

/* roulang page: category2 */
:root {
  --primary: #2E7CF6;
  --primary-dark: #1D5FBF;
  --teal: #23B3A4;
  --warm: #F6C453;
  --blue-light: #EAF2FF;
  --bg: #F7F9FC;
  --surface: #FFFFFF;
  --text-head: #16283B;
  --text-body: #3E4F61;
  --text-weak: #72869B;
  --line: #E4EAF2;
  --line-strong: #C6D4E3;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow: 0 2px 10px rgba(27, 48, 80, .06);
  --shadow-hover: 0 14px 28px rgba(21, 66, 125, .08);
  --container: 1200px;
  --side-pad: 24px;
  --font-base: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Helvetica Neue", Arial, sans-serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color .2s ease;
}
a:hover {
  color: var(--primary-dark);
}
img {
  max-width: 100%;
  display: block;
}
ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
button {
  font-family: inherit;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--side-pad);
  padding-right: var(--side-pad);
}

/* Header */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 20px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 17px;
  letter-spacing: .5px;
  box-shadow: var(--shadow);
}
.brand-name {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.2;
}
.brand-name strong {
  font-size: 19px;
  color: var(--text-head);
  letter-spacing: 1px;
}
.brand-name em {
  font-style: normal;
  font-size: 12px;
  color: var(--text-weak);
  margin-top: 2px;
  letter-spacing: .5px;
}
.site-nav .nav-links {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  color: var(--text-body);
  font-weight: 500;
  font-size: 16px;
  border-radius: 8px;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 5px;
  height: 4px;
  border-radius: 6px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform .2s ease;
  transform-origin: center;
}
.nav-link:hover {
  color: var(--primary-dark);
}
.nav-link.is-active {
  color: var(--primary-dark);
  font-weight: 700;
}
.nav-link.is-active::after {
  transform: scaleX(1);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
  text-align: center;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  height: 48px;
  padding: 0 24px;
  min-width: 120px;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  box-shadow: 0 10px 16px rgba(46, 124, 246, .22);
  transform: translateY(-2px);
}
.btn-primary:active {
  transform: translateY(1px);
  box-shadow: none;
}
.btn-secondary {
  background: #fff;
  border-color: var(--line-strong);
  color: var(--primary);
  height: 48px;
  padding: 0 22px;
}
.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
  transform: translateY(-2px);
}
.btn-sm {
  height: 42px;
  padding: 0 18px;
  font-size: 14px;
}
.nav-trigger {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
}
.nav-trigger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-head);
  border-radius: 2px;
}
.nav-trigger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-trigger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-trigger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Page Hero */
.category-hero {
  position: relative;
  background: #fff;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.category-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: .12;
  pointer-events: none;
}
.category-hero .hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  align-items: center;
  gap: 40px;
  padding: 80px 0;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-weak);
  margin-bottom: 22px;
}
.breadcrumb a {
  color: var(--primary);
  font-weight: 500;
}
.breadcrumb a:hover {
  text-decoration: underline;
}
.breadcrumb i {
  font-style: normal;
  color: #aab9c8;
}
.hero-title {
  font-size: 40px;
  line-height: 1.35;
  font-weight: 800;
  color: var(--text-head);
  margin: 0 0 18px;
}
.hero-title span {
  color: var(--primary);
}
.hero-desc {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-body);
  max-width: 610px;
  margin: 0;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.hero-visual img {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hover);
  border: 1px solid #fff;
}
.hero-float {
  position: absolute;
  background: rgba(255, 255, 255, .95);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 16px;
  box-shadow: var(--shadow);
  font-size: 13px;
  color: var(--text-head);
}
.hero-float.one {
  top: 34px;
  left: -18px;
}
.hero-float.two {
  bottom: 28px;
  right: -12px;
}
.hero-float strong {
  color: var(--primary);
  font-size: 19px;
  display: block;
  line-height: 1.3;
}
.hero-float small {
  color: var(--text-weak);
}

/* Section block */
.section {
  padding: 96px 0;
}
.section.light {
  background: #fff;
}
.section-soft {
  background: var(--blue-light);
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
}
.section-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: .5px;
  background: var(--blue-light);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 12px;
}
.section-head h2 {
  margin: 0;
  font-size: 28px;
  font-weight: 800;
  color: var(--text-head);
  line-height: 1.4;
}
.section-head .sec-lead {
  max-width: 540px;
  font-size: 15px;
  color: var(--text-weak);
  line-height: 1.8;
  margin: 0;
}

/* Category description strip */
.cat-intro {
  background: var(--blue-light);
  border-radius: var(--radius);
  border: 1px solid #d7e6ff;
  padding: 24px 28px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  margin: -46px 0 0;
  position: relative;
  z-index: 2;
  box-shadow: var(--shadow);
}
.cat-intro-icon {
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 20px;
  margin-top: 4px;
}
.cat-intro-text h3 {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--text-head);
  font-weight: 700;
}
.cat-intro-text p {
  margin: 0;
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.85;
}

/* Topic grid */
.topic-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.topic-card {
  display: flex;
  gap: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.topic-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--line-strong);
}
.topic-icon {
  flex: 0 0 54px;
  width: 54px;
  height: 54px;
  border-radius: 14px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
}
.topic-icon.b1 { background: var(--primary); }
.topic-icon.b2 { background: var(--teal); }
.topic-icon.b3 { background: #9b7bfa; }
.topic-icon.b4 { background: #ef8a63; }
.topic-icon.b5 { background: #4a9ff0; }
.topic-icon.b6 { background: var(--warm); color: var(--text-head); }
.topic-body {
  flex: 1;
  min-width: 0;
}
.topic-body h3 {
  margin: 0 0 6px;
  font-size: 19px;
  font-weight: 700;
  color: var(--text-head);
}
.topic-body p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-weak);
}
.topic-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.topic-link .arrow {
  transition: transform .2s ease;
}
.topic-link:hover .arrow {
  transform: translateX(4px);
}
.topic-link:hover {
  text-decoration: underline;
}

/* Content card grid */
.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  scroll-margin-top: 100px;
}
.content-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  position: relative;
  scroll-margin-top: 110px;
}
.content-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--line-strong);
}
.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--blue-light);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
}
.tag.teal {
  background: rgba(35, 179, 164, .1);
  color: #178f84;
}
.tag.warm {
  background: rgba(246, 196, 83, .16);
  color: #9c6b0a;
}
.content-card h2 {
  margin: 0 0 12px;
  font-size: 20px;
  line-height: 1.5;
  font-weight: 700;
  color: var(--text-head);
}
.content-card .card-text {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-body);
  margin: 0 0 20px;
  flex: 1;
}
.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
  color: var(--text-weak);
  font-size: 14px;
}
.card-read {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  white-space: nowrap;
}
.card-read:hover {
  text-decoration: underline;
}
.card-read .arrow {
  transition: transform .2s ease;
}
.card-read:hover .arrow {
  transform: translateX(4px);
}

/* CTA */
.cta-band {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 52px;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: .18;
  pointer-events: none;
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  position: relative;
  z-index: 1;
}
.cta-copy {
  flex: 1;
}
.cta-copy h2 {
  margin: 0 0 12px;
  font-size: 28px;
  font-weight: 800;
  color: var(--text-head);
}
.cta-copy p {
  margin: 0;
  color: var(--text-body);
  font-size: 16px;
  line-height: 1.9;
  max-width: 720px;
}
.cta-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  flex-shrink: 0;
}

/* FAQ */
.faq-wrap {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.faq-item.open {
  border-color: var(--line-strong);
  box-shadow: var(--shadow);
}
.faq-q {
  width: 100%;
  border: 0;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  text-align: left;
  cursor: pointer;
  padding: 18px 22px;
  color: var(--text-head);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
}
.faq-q .plus {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--blue-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 400;
  flex-shrink: 0;
  transition: transform .25s ease, background .25s ease;
}
.faq-item.open .plus {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-a {
  max-height: 0;
  padding: 0 22px;
  overflow: hidden;
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.85;
  transition: max-height .25s ease, padding .25s ease;
}
.faq-item.open .faq-a {
  max-height: 400px;
  padding: 0 22px 22px;
}

/* Footer */
.site-footer {
  background: #10243c;
  color: #c9d5e5;
  margin-top: 0;
}
.site-footer .brand-name strong {
  color: #fff;
}
.site-footer .brand-name em {
  color: #93a7c0;
}
.site-footer .brand-mark {
  background: var(--primary);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr .8fr 1fr 1fr;
  gap: 40px;
  padding: 56px 0 40px;
}
.footer-brand p {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.9;
  max-width: 380px;
  color: #b3c2d6;
}
.footer-col h4,
.footer-contact h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 20px;
}
.footer-col li,
.footer-contact p {
  margin-bottom: 12px;
  font-size: 14px;
  line-height: 1.8;
}
.footer-col a {
  color: #b3c2d6;
}
.footer-col a:hover {
  color: #fff;
}
.footer-contact a {
  color: #b3c2d6;
}
.footer-contact a:hover {
  color: #fff;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .12);
  padding: 22px 0;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: #8fa2ba;
}

/* Scroll top */
.to-top {
  text-align: center;
  padding: 26px 0 0;
}
.to-top a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}

/* Responsive */
@media (max-width: 1200px) {
  .container {
    max-width: 100%;
    padding-left: 24px;
    padding-right: 24px;
  }
  .category-hero .hero-inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    padding: 64px 0;
  }
}
@media (max-width: 1024px) {
  .site-nav {
    flex-wrap: wrap;
    min-height: auto;
    padding: 14px 0;
    gap: 12px;
  }
  .site-nav .nav-links {
    order: 3;
    width: 100%;
    overflow-x: auto;
    padding: 4px 0 2px;
    justify-content: flex-start;
  }
  .nav-links::-webkit-scrollbar {
    height: 3px;
  }
  .nav-links::-webkit-scrollbar-thumb {
    background: #cfdcf0;
    border-radius: 6px;
  }
  .nav-link {
    white-space: nowrap;
    padding: 10px 14px;
  }
  .nav-actions .btn-secondary {
    display: none;
  }
  .category-hero .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 56px 0;
  }
  .hero-visual {
    max-width: 620px;
  }
  .topic-grid,
  .content-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    padding: 48px 0 28px;
  }
}
@media (max-width: 768px) {
  body {
    font-size: 15px;
  }
  .site-nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    min-height: 64px;
  }
  .brand-name em {
    display: none;
  }
  .site-nav .nav-links {
    display: none;
    width: 100%;
    background: #fff;
    border-top: 1px solid var(--line);
    margin-top: 8px;
    border-radius: 12px;
    padding: 12px;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }
  .site-nav .nav-links.open {
    display: flex;
  }
  .nav-link {
    justify-content: flex-start;
    width: 100%;
  }
  .nav-link.is-active {
    background: var(--blue-light);
    color: var(--primary-dark);
    border-radius: 10px;
  }
  .nav-link::after {
    display: none;
  }
  .nav-actions {
    margin-left: auto;
  }
  .nav-actions .btn-secondary {
    display: none;
  }
  .nav-actions .btn-sm {
    height: 40px;
    padding: 0 14px;
    font-size: 14px;
  }
  .nav-trigger {
    display: flex;
  }
  .hero-title {
    font-size: 28px;
  }
  .category-hero .hero-inner {
    padding: 40px 0 32px;
  }
  .section {
    padding: 60px 0;
  }
  .section-head {
    align-items: flex-start;
    flex-direction: column;
    margin-bottom: 28px;
  }
  .section-head h2 {
    font-size: 24px;
  }
  .cat-intro {
    flex-direction: column;
    margin-top: -38px;
    padding: 20px;
  }
  .topic-grid,
  .content-grid {
    grid-template-columns: 1fr;
  }
  .content-card {
    padding: 24px;
  }
  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .cta-band {
    padding: 32px 22px;
  }
  .cta-actions {
    width: 100%;
  }
  .cta-actions .btn {
    flex: 1;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 40px 0 20px;
  }
  .footer-bottom {
    justify-content: center;
  }
}
@media (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .nav-actions .btn-secondary {
    display: none;
  }
  .brand-name strong {
    font-size: 17px;
  }
  .hero-title {
    font-size: 25px;
  }
  .hero-float.one {
    left: 8px;
  }
  .hero-float.two {
    right: 8px;
  }
}