/* roulang page: index */
:root{
  --coral:#f06445;
  --coral-deep:#d94d32;
  --coral-pale:#fff0eb;
  --lime:#9dca45;
  --lime-pale:#f1f8df;
  --ink:#252422;
  --ink-soft:#494743;
  --muted:#77736d;
  --paper:#fffdf9;
  --warm:#f5f1ea;
  --sand:#e8e0d5;
  --line:#ded6cb;
  --white:#ffffff;
  --radius-sm:10px;
  --radius-md:18px;
  --radius-lg:28px;
  --shadow:0 16px 36px rgba(42,35,28,.09);
  --shadow-soft:0 8px 22px rgba(42,35,28,.07);
  --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
::selection{background:var(--coral);color:#fff}
.container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
.topline{background:var(--ink);color:#f8f4ed;font-size:13px}
.topline-inner{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.notice-dot{width:7px;height:7px;border-radius:50%;background:var(--lime);display:inline-block;margin-right:8px;box-shadow:0 0 0 4px rgba(157,202,69,.15)}
.topline a{color:#dceeb4;text-decoration:underline;text-underline-offset:3px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,253,249,.97);border-bottom:1px solid var(--line)}
.nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;min-width:230px;font-weight:800;font-size:17px;letter-spacing:-.4px}
.brand-mark{width:37px;height:37px;display:grid;place-items:center;border-radius:12px;background:var(--coral);color:#fff;box-shadow:4px 4px 0 var(--ink)}
.brand-mark svg{width:22px;height:22px}
.nav{display:flex;align-items:center;justify-content:center;gap:3px;flex:1}
.nav a{position:relative;padding:11px 12px;color:var(--ink-soft);font-size:14px;font-weight:700;white-space:nowrap;transition:.2s ease}
.nav a:after{content:"";position:absolute;height:3px;left:12px;right:12px;bottom:4px;background:var(--coral);transform:scaleX(0);transform-origin:left;transition:.2s ease}
.nav a:hover,.nav a.active{color:var(--ink)}
.nav a:hover:after,.nav a.active:after{transform:scaleX(1)}
.btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 19px;border:1px solid transparent;border-radius:999px;font-weight:800;font-size:14px;transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn:focus-visible,.nav a:focus-visible,.faq-question:focus-visible{outline:3px solid rgba(240,100,69,.35);outline-offset:3px}
.btn-primary{background:var(--coral);color:#fff;box-shadow:0 8px 18px rgba(240,100,69,.25)}
.btn-primary:hover{background:var(--coral-deep);box-shadow:0 12px 24px rgba(240,100,69,.31)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#403d39}
.btn-light{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-light:hover{border-color:var(--ink);box-shadow:var(--shadow-soft)}
.nav-download{white-space:nowrap}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
.hero{position:relative;overflow:hidden;background:var(--ink);color:#fff;padding:64px 0 48px}
.hero:before{content:"";position:absolute;width:520px;height:520px;right:-190px;top:-255px;border:1px solid rgba(255,255,255,.14);border-radius:50%;box-shadow:0 0 0 48px rgba(255,255,255,.03),0 0 0 96px rgba(255,255,255,.025)}
.hero:after{content:"";position:absolute;left:8%;bottom:-86px;width:340px;height:150px;background:var(--coral);transform:rotate(-7deg);opacity:.95}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.13fr .87fr;gap:52px;align-items:end}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 10px;border:1px solid rgba(255,255,255,.22);border-radius:999px;color:#e9e1d6;font-size:12px;font-weight:700;letter-spacing:.4px}
.eyebrow span{color:var(--lime)}
.hero h1{max-width:780px;margin:18px 0 18px;font-size:clamp(38px,5vw,62px);line-height:1.16;letter-spacing:-2.4px}
.hero h1 em{font-style:normal;color:#ff9a82}
.hero-copy{max-width:660px;margin:0;color:#d9d3ca;font-size:17px;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:29px}
.hero-note{margin:20px 0 0;color:#bcb5ac;font-size:13px}
.hero-note strong{color:#e0f3af}
.hero-board{position:relative;padding:18px 18px 0;background:#f7f1e8;color:var(--ink);border-radius:24px 24px 0 0;box-shadow:15px 15px 0 rgba(240,100,69,.9)}
.board-top{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--sand);padding:0 0 14px;font-size:12px;font-weight:800}
.board-top b{color:var(--coral)}
.board-main{padding:18px 2px 16px}
.board-title{display:flex;align-items:center;justify-content:space-between;font-size:18px;font-weight:900}
.board-title small{font-size:11px;color:var(--muted);font-weight:600}
.board-tabs{display:flex;gap:7px;margin:16px 0}
.board-tabs span{padding:5px 9px;border-radius:6px;background:#ebe5dc;font-size:11px;font-weight:700}
.board-tabs span:first-child{background:var(--lime);color:#253111}
.feed-mini{display:grid;gap:9px}
.feed-mini-item{display:grid;grid-template-columns:32px 1fr auto;align-items:center;gap:10px;padding:10px 0;border-top:1px solid var(--sand)}
.feed-num{font-size:12px;font-weight:900;color:var(--coral)}
.feed-lines i{display:block;height:7px;border-radius:10px;background:#d9d2c8;margin:3px 0}
.feed-lines i:first-child{width:82%;background:#8d8881}
.feed-lines i:last-child{width:54%}
.feed-time{font-size:10px;color:var(--muted)}
.board-footer{display:flex;justify-content:space-between;align-items:center;padding:12px 2px;background:var(--ink);margin:0 -18px;color:#fff;font-size:12px}
.board-footer strong{padding-left:18px;color:#dff0b5}
.board-footer span{padding-right:18px;color:#ddd5ca}
.quickbar{position:relative;z-index:3;margin-top:-1px;background:var(--coral)}
.quick-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr 1fr}
.quick-item{min-height:113px;padding:23px 21px;color:#fff;border-right:1px solid rgba(255,255,255,.25);transition:background .2s ease}
.quick-item:last-child{border-right:0}
.quick-item:hover{background:var(--coral-deep)}
.quick-item small{display:block;color:#ffd9cf;font-size:11px;font-weight:800;letter-spacing:.7px}
.quick-item strong{display:flex;align-items:center;justify-content:space-between;margin-top:5px;font-size:18px;line-height:1.3}
.quick-item strong b{font-size:22px;font-weight:400}
.section{padding:92px 0}
.section-warm{background:var(--warm)}
.section-dark{background:var(--ink);color:#fff}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:30px}
.kicker{display:block;margin-bottom:8px;color:var(--coral);font-size:12px;font-weight:900;letter-spacing:1.2px;text-transform:uppercase}
.section-dark .kicker{color:var(--lime)}
.section-title{margin:0;font-size:clamp(27px,3vw,38px);line-height:1.25;letter-spacing:-1px}
.section-desc{max-width:470px;margin:0;color:var(--muted);font-size:15px}
.section-dark .section-desc{color:#cac3ba}
.news-layout{display:grid;grid-template-columns:1.03fr .97fr;gap:22px}
.feature-story{position:relative;min-height:410px;display:flex;flex-direction:column;justify-content:flex-end;padding:30px;border-radius:var(--radius-lg);overflow:hidden;background:#c8ddd0;color:var(--ink)}
.feature-story:before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(31,35,31,.02) 15%,rgba(31,35,31,.78) 100%)}
.feature-art{position:absolute;inset:0;background:radial-gradient(circle at 78% 25%,#f6ab71 0 12%,transparent 12.5%),radial-gradient(circle at 70% 70%,#77a46a 0 24%,transparent 24.5%),linear-gradient(130deg,#dfe9be 0 42%,#acc9a4 42% 62%,#f09b71 62%);opacity:.96}
.feature-art:after{content:"";position:absolute;width:250px;height:250px;border:26px solid rgba(255,255,255,.55);border-radius:50%;left:14%;top:7%;transform:rotate(-22deg)}
.story-content{position:relative;z-index:1;color:#fff}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 9px;border-radius:999px;background:var(--lime-pale);color:#4a6420;font-size:12px;font-weight:800}
.badge-coral{background:var(--coral-pale);color:var(--coral-deep)}
.story-content h3{margin:13px 0 10px;font-size:28px;line-height:1.32;letter-spacing:-.7px}
.story-content p{max-width:560px;margin:0;color:#eee8df;font-size:14px}
.story-meta{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-top:18px;font-size:12px;color:#f0e9e0}
.news-stack{border-top:2px solid var(--ink)}
.news-item{display:grid;grid-template-columns:94px 1fr auto;gap:18px;align-items:center;padding:19px 0;border-bottom:1px solid var(--line);transition:.2s ease}
.news-item:hover{padding-left:8px;background:#fffaf5}
.news-date{font-size:12px;color:var(--muted);line-height:1.45}
.news-date strong{display:block;color:var(--coral);font-size:20px}
.news-info h3{margin:0 0 5px;font-size:17px;line-height:1.45}
.news-info p{margin:0;color:var(--muted);font-size:13px;line-height:1.6}
.arrow-link{width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;font-size:20px;transition:.2s ease}
.news-item:hover .arrow-link{background:var(--ink);border-color:var(--ink);color:#fff}
.cms-empty{padding:42px 22px;border:1px dashed #cfc4b7;border-radius:var(--radius-md);background:#fffaf4;text-align:center;color:var(--muted)}
.cms-empty p{margin:0 0 16px}
.download-shell{display:grid;grid-template-columns:.9fr 1.1fr;gap:55px;align-items:center}
.download-preview{position:relative;min-height:430px;border-radius:var(--radius-lg);background:#ded5c8;overflow:hidden}
.download-preview:before{content:"";position:absolute;width:300px;height:300px;left:-58px;top:-70px;border-radius:50%;background:var(--lime)}
.download-preview:after{content:"";position:absolute;width:230px;height:230px;right:-80px;bottom:-70px;border-radius:50%;background:var(--coral)}
.app-sheet{position:absolute;left:50%;top:48px;width:265px;height:420px;padding:14px;border:8px solid var(--ink);border-radius:31px;background:#fff9f2;transform:translateX(-50%) rotate(-5deg);box-shadow:16px 20px 0 rgba(37,36,34,.18)}
.app-notch{width:82px;height:17px;margin:-4px auto 15px;border-radius:0 0 12px 12px;background:var(--ink)}
.app-logo{display:flex;align-items:center;gap:8px;font-size:12px;font-weight:900}
.app-logo b{width:24px;height:24px;display:grid;place-items:center;border-radius:8px;background:var(--coral);color:#fff}
.app-hero-mini{margin-top:15px;padding:14px;border-radius:14px;background:var(--ink);color:#fff}
.app-hero-mini small{color:#cfd6ad;font-size:10px}
.app-hero-mini strong{display:block;margin-top:3px;font-size:17px;line-height:1.3}
.app-list-mini{display:grid;gap:9px;margin-top:13px}
.app-list-mini div{display:grid;grid-template-columns:33px 1fr;gap:8px;align-items:center}
.app-list-mini i{height:33px;border-radius:8px;background:var(--coral-pale)}
.app-list-mini span{height:8px;border-radius:8px;background:#dcd4ca;box-shadow:0 13px 0 #eee8e0}
.download-panel h2{margin:0 0 12px;font-size:clamp(29px,3vw,40px);line-height:1.25;letter-spacing:-1px}
.download-panel>p{margin:0;color:var(--ink-soft)}
.download-info{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:25px 0}
.download-info div{padding:13px;border-left:3px solid var(--lime);background:#fff;border-radius:0 var(--radius-sm) var(--radius-sm) 0}
.download-info small{display:block;color:var(--muted);font-size:11px}
.download-info strong{display:block;margin-top:2px;font-size:13px}
.download-actions{display:flex;flex-wrap:wrap;align-items:center;gap:13px}
.qr-box{width:86px;height:86px;display:grid;place-items:center;background:repeating-linear-gradient(45deg,#262421 0 3px,#fff 3px 6px);border:7px solid #fff;outline:1px solid var(--line);border-radius:7px;color:#fff;font-size:10px;font-weight:900;text-align:center;line-height:1.2}
.download-tip{margin-top:16px;color:var(--muted);font-size:12px}
.feature-list{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px}
.feature-row{display:grid;grid-template-columns:48px 1fr;gap:14px;padding:20px 0;border-top:1px solid var(--line)}
.feature-index{width:40px;height:40px;display:grid;place-items:center;border-radius:12px;background:var(--ink);color:var(--lime);font-size:14px;font-weight:900}
.feature-row h3{margin:0 0 4px;font-size:18px}
.feature-row p{margin:0;color:var(--muted);font-size:14px;line-height:1.65}
.timeline{position:relative;max-width:900px;margin:0 auto;padding-left:88px}
.timeline:before{content:"";position:absolute;left:31px;top:8px;bottom:8px;width:2px;background:#4a4742}
.timeline-item{position:relative;padding:0 0 34px}
.timeline-item:last-child{padding-bottom:0}
.timeline-point{position:absolute;left:-67px;top:3px;width:18px;height:18px;border:5px solid var(--ink);border-radius:50%;background:var(--coral);box-shadow:0 0 0 5px rgba(240,100,69,.16)}
.timeline-date{display:inline-block;margin-bottom:7px;color:var(--lime);font-size:12px;font-weight:800}
.timeline-card{display:flex;justify-content:space-between;align-items:start;gap:20px;padding:19px 22px;border:1px solid #4e4a45;border-radius:14px;background:#302e2b}
.timeline-card h3{margin:0 0 4px;color:#fff;font-size:18px}
.timeline-card p{margin:0;color:#c5beb5;font-size:14px}
.timeline-label{flex:none;padding:4px 8px;border-radius:5px;background:rgba(157,202,69,.15);color:#d9efa2;font-size:11px;font-weight:800}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.step{position:relative;padding:23px 20px 25px;background:#fff;border:1px solid var(--line);border-radius:16px}
.step:not(:last-child):after{content:"→";position:absolute;right:-22px;top:44px;color:var(--coral);font-size:23px;font-weight:900;z-index:2}
.step-no{display:block;color:var(--coral);font-size:13px;font-weight:900}
.step h3{margin:9px 0 6px;font-size:18px}
.step p{margin:0;color:var(--muted);font-size:13px;line-height:1.65}
.faq-list{max-width:900px;margin:0 auto;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:15px;padding:20px 0;border:0;background:transparent;color:var(--ink);text-align:left;font-weight:800;font-size:16px}
.faq-question span{width:30px;height:30px;display:grid;place-items:center;border-radius:50%;background:var(--coral-pale);color:var(--coral);font-size:21px;font-weight:400;transition:.2s ease}
.faq-answer{display:none;max-width:760px;padding:0 46px 20px 0;color:var(--muted);font-size:14px;line-height:1.8}
.faq-item.open .faq-answer{display:block}
.faq-item.open .faq-question span{background:var(--coral);color:#fff;transform:rotate(45deg)}
.cta{padding:68px 0;background:var(--coral)}
.cta-box{display:flex;align-items:center;justify-content:space-between;gap:30px}
.cta h2{margin:0 0 8px;color:#fff;font-size:clamp(27px,3vw,38px);line-height:1.25}
.cta p{margin:0;color:#ffe4dc;font-size:15px}
.cta-actions{display:flex;align-items:center;gap:16px;flex:none}
.cta .btn-primary{background:var(--ink);box-shadow:none}
.cta .btn-primary:hover{background:#45413c}
.cta .qr-box{background:repeating-linear-gradient(45deg,#fff 0 3px,#f06445 3px 6px);border-color:#fff;outline-color:rgba(255,255,255,.6)}
.site-footer{padding:58px 0 24px;background:#201f1d;color:#fff}
.footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;gap:40px;padding-bottom:45px;border-bottom:1px solid #45413d}
.footer-brand{align-items:flex-start;color:#fff}
.footer-brand-mark{box-shadow:4px 4px 0 var(--lime)}
.footer-intro{max-width:300px;margin:18px 0 0;color:#aaa39b;font-size:13px;line-height:1.8}
.footer-col h3{margin:0 0 15px;color:#f5eee5;font-size:14px}
.footer-col a{display:block;width:max-content;margin:8px 0;color:#aaa39b;font-size:13px;transition:.2s ease}
.footer-col a:hover{color:#ff9a82;transform:translateX(3px)}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:20px;color:#817b74;font-size:12px}
.footer-bottom a{text-decoration:underline;text-underline-offset:3px}
@media (max-width:1100px){
  .nav{gap:0}
  .nav a{padding-left:8px;padding-right:8px;font-size:13px}
  .nav a:after{left:8px;right:8px}
  .hero-grid{gap:32px}
  .download-shell{gap:35px}
}
@media (max-width:820px){
  .container{width:min(var(--container),calc(100% - 36px))}
  .nav-wrap{height:70px}
  .brand{min-width:0;font-size:15px}
  .nav{display:none;position:absolute;left:0;right:0;top:70px;padding:12px 18px 18px;flex-direction:column;align-items:stretch;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--shadow-soft)}
  .nav.open{display:flex}
  .nav a{padding:13px 8px;border-bottom:1px solid var(--line)}
  .nav a:after{display:none}
  .nav-download{display:none}
  .menu-toggle{display:grid;place-items:center}
  .hero{padding-top:46px}
  .hero-grid,.news-layout,.download-shell{grid-template-columns:1fr}
  .hero-board{max-width:510px;width:100%;margin:20px auto 0}
  .quick-grid{grid-template-columns:repeat(2,1fr)}
  .quick-item:nth-child(2){border-right:0}
  .quick-item{border-bottom:1px solid rgba(255,255,255,.25)}
  .section{padding:68px 0}
  .steps{grid-template-columns:1fr 1fr}
  .step:nth-child(2):after{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  body{font-size:15px}
  .container{width:calc(100% - 32px)}
  .topline-inner{min-height:34px;font-size:11px}
  .topline-inner a{white-space:nowrap}
  .brand{font-size:14px;line-height:1.25}
  .brand-mark{width:34px;height:34px;flex:none}
  .hero{padding:38px 0 32px}
  .hero h1{font-size:37px;letter-spacing:-1.5px}
  .hero-copy{font-size:15px;line-height:1.8}
  .hero-actions{display:grid;grid-template-columns:1fr 1fr}
  .hero-actions .btn{padding-left:10px;padding-right:10px;font-size:13px}
  .hero-note{font-size:12px}
  .hero-board{padding:14px 14px 0;border-radius:18px 18px 0 0;box-shadow:9px 10px 0 rgba(240,100,69,.9)}
  .board-footer{margin:0 -14px}
  .quick-grid{display:flex;overflow-x:auto;scroll-snap-type:x mandatory}
  .quick-item{min-width:172px;min-height:100px;padding:18px 16px;scroll-snap-align:start;border-right:1px solid rgba(255,255,255,.25)}
  .quick-item strong{font-size:16px}
  .section{padding:55px 0}
  .section-head{display:block;margin-bottom:24px}
  .section-desc{margin-top:12px;font-size:14px}
  .feature-story{min-height:350px;padding:22px}
  .story-content h3{font-size:23px}
  .news-item{grid-template-columns:64px 1fr 30px;gap:10px;padding:15px 0}
  .news-date strong{font-size:17px}
  .news-info h3{font-size:15px}
  .news-info p{display:none}
  .arrow-link{width:30px;height:30px;font-size:16px}
  .download-preview{min-height:370px}
  .app-sheet{top:33px;width:225px;height:365px}
  .download-info{grid-template-columns:1fr 1fr}
  .download-info div:last-child{grid-column:span 2}
  .download-actions{align-items:flex-start}
  .download-actions .btn{flex:1}
  .feature-list{grid-template-columns:1fr;gap:0}
  .timeline{padding-left:45px}
  .timeline:before{left:7px}
  .timeline-point{left:-47px}
  .timeline-card{display:block;padding:16px}
  .timeline-label{display:inline-block;margin-top:10px}
  .steps{grid-template-columns:1fr}
  .step:not(:last-child):after{content:"↓";right:auto;left:21px;top:auto;bottom:-22px}
  .faq-question{font-size:15px}
  .faq-answer{padding-right:20px;font-size:13px}
  .cta{padding:48px 0}
  .cta-box{display:block}
  .cta-actions{margin-top:22px;align-items:flex-start}
  .cta-actions .qr-box{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px 20px}
  .footer-grid>div:first-child{grid-column:span 2}
  .footer-bottom{display:block}
  .footer-bottom span{display:block;margin-top:8px}
}

/* roulang page: category1 */
:root{
      --coral:#f06445;
      --coral-deep:#d94d32;
      --coral-pale:#fff0eb;
      --lime:#9dca45;
      --lime-pale:#f1f8df;
      --ink:#252422;
      --ink-soft:#494743;
      --muted:#77736d;
      --paper:#fffdf9;
      --warm:#f5f1ea;
      --sand:#e8e0d5;
      --line:#ded6cb;
      --white:#fff;
      --radius-sm:10px;
      --radius-md:18px;
      --radius-lg:28px;
      --shadow:0 16px 36px rgba(42,35,28,.09);
      --shadow-soft:0 8px 22px rgba(42,35,28,.07);
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    img{max-width:100%;display:block}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,253,249,.97);border-bottom:1px solid var(--line)}
    .nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:inline-flex;align-items:center;gap:10px;min-width:230px;font-weight:800;font-size:17px;letter-spacing:-.4px}
    .brand-mark{width:37px;height:37px;display:grid;place-items:center;border-radius:12px;background:var(--coral);color:#fff;box-shadow:4px 4px 0 var(--ink)}
    .brand-mark svg{width:22px;height:22px}
    .nav{display:flex;align-items:center;justify-content:center;gap:3px;flex:1}
    .nav a{position:relative;padding:11px 12px;color:var(--ink-soft);font-size:14px;font-weight:700;white-space:nowrap;transition:.2s ease}
    .nav a:after{content:"";position:absolute;height:3px;left:12px;right:12px;bottom:4px;background:var(--coral);transform:scaleX(0);transform-origin:left;transition:.2s ease}
    .nav a:hover,.nav a.active{color:var(--ink)}
    .nav a:hover:after,.nav a.active:after{transform:scaleX(1)}
    .btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 19px;border:1px solid transparent;border-radius:999px;font-weight:800;font-size:14px;transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease}
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,.nav a:focus-visible,.faq-question:focus-visible{outline:3px solid rgba(240,100,69,.35);outline-offset:3px}
    .btn-primary{background:var(--coral);color:#fff;box-shadow:0 8px 18px rgba(240,100,69,.25)}
    .btn-primary:hover{background:var(--coral-deep);box-shadow:0 12px 24px rgba(240,100,69,.31)}
    .btn-dark{background:var(--ink);color:#fff}
    .btn-dark:hover{background:#403d39}
    .btn-light{background:#fff;color:var(--ink);border-color:var(--line)}
    .btn-light:hover{border-color:var(--ink);box-shadow:var(--shadow-soft)}
    .nav-download{white-space:nowrap}
    .menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
    .topline{background:var(--ink);color:#f4efe8;font-size:13px}
    .topline-inner{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topline strong{color:#dff0b5}
    .topline a{color:#ffd1c5;text-decoration:underline;text-underline-offset:3px}
    .page-hero{position:relative;overflow:hidden;background:var(--ink);color:#fff;padding:72px 0 82px}
    .page-hero:before{content:"";position:absolute;right:-130px;top:-210px;width:520px;height:520px;border:1px solid rgba(255,255,255,.16);border-radius:50%;box-shadow:0 0 0 42px rgba(255,255,255,.035),0 0 0 86px rgba(255,255,255,.025)}
    .page-hero:after{content:"";position:absolute;bottom:-95px;left:10%;width:380px;height:160px;background:var(--coral);transform:rotate(-8deg)}
    .hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.08fr .92fr;gap:70px;align-items:center}
    .crumbs{display:flex;gap:9px;align-items:center;color:#bdb6ad;font-size:13px;margin-bottom:24px}
    .crumbs a:hover{color:#fff}
    .kicker{display:inline-flex;align-items:center;gap:8px;color:var(--lime);font-size:13px;font-weight:800;letter-spacing:.8px}
    .kicker:before{content:"";width:28px;height:3px;background:var(--coral);border-radius:10px}
    .page-hero h1{max-width:700px;margin:16px 0 18px;font-size:clamp(40px,5vw,62px);line-height:1.15;letter-spacing:-2.4px}
    .page-hero h1 em{font-style:normal;color:#ff9a82}
    .hero-copy{max-width:650px;color:#d8d1c8;font-size:17px;line-height:1.9;margin:0}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:29px}
    .hero-actions .btn-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
    .hero-actions .btn-light:hover{background:#fff;color:var(--ink)}
    .news-panel{position:relative;background:#f7f1e8;color:var(--ink);border-radius:24px;padding:24px;box-shadow:14px 14px 0 rgba(157,202,69,.9)}
    .panel-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}
    .panel-top strong{font-size:20px}
    .panel-top span{font-size:12px;color:var(--muted)}
    .panel-line{display:grid;grid-template-columns:42px 1fr;gap:14px;padding:15px 0;border-top:1px solid var(--sand)}
    .panel-line:first-of-type{border-top:0;padding-top:0}
    .panel-index{width:34px;height:34px;border-radius:10px;background:var(--coral);color:#fff;display:grid;place-items:center;font-weight:900;font-size:13px}
    .panel-line strong{display:block;font-size:15px;line-height:1.45}
    .panel-line small{display:block;color:var(--muted);font-size:12px;margin-top:4px}
    .section{padding:88px 0}
    .section-warm{background:var(--warm)}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:30px}
    .section-title{margin:0;font-size:clamp(28px,3vw,38px);line-height:1.25;letter-spacing:-1px}
    .section-desc{max-width:520px;margin:0;color:var(--muted);font-size:15px}
    .topic-strip{display:flex;gap:12px;overflow:auto;padding:4px 2px 16px;scrollbar-width:thin}
    .topic-chip{flex:0 0 auto;display:flex;align-items:center;gap:9px;padding:12px 16px;background:#fff;border:1px solid var(--line);border-radius:999px;font-size:14px;font-weight:800;transition:.2s ease}
    .topic-chip span{width:8px;height:8px;border-radius:50%;background:var(--coral)}
    .topic-chip:hover,.topic-chip.active{background:var(--coral);border-color:var(--coral);color:#fff;transform:translateY(-2px)}
    .topic-chip:hover span,.topic-chip.active span{background:#fff}
    .lead-layout{display:grid;grid-template-columns:1.12fr .88fr;gap:26px}
    .lead-card{position:relative;min-height:430px;overflow:hidden;padding:32px;border-radius:var(--radius-lg);background:#d6e1d1;color:var(--ink);display:flex;flex-direction:column;justify-content:flex-end}
    .lead-art{position:absolute;inset:0;background:radial-gradient(circle at 73% 26%,#f7a26c 0 11%,transparent 11.5%),radial-gradient(circle at 63% 60%,#8bad71 0 22%,transparent 22.5%),linear-gradient(138deg,#ccdcd0 0 42%,#f1c290 42% 61%,#657c63 61% 100%);opacity:.92}
    .lead-art:after{content:"";position:absolute;right:11%;top:15%;width:120px;height:210px;border:3px solid rgba(37,36,34,.6);border-radius:20px;transform:rotate(12deg)}
    .lead-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(37,36,34,0) 25%,rgba(37,36,34,.84) 100%)}
    .lead-content{position:relative;z-index:1;color:#fff}
    .badge{display:inline-flex;align-items:center;width:max-content;padding:5px 10px;border-radius:999px;background:var(--lime);color:var(--ink);font-size:12px;font-weight:900}
    .lead-card h3{max-width:560px;margin:14px 0 9px;font-size:27px;line-height:1.35}
    .lead-card p{max-width:570px;margin:0;color:#f0ebe3;font-size:14px}
    .meta{display:flex;align-items:center;gap:14px;color:var(--muted);font-size:12px}
    .lead-content .meta{color:#e9e0d6;margin-top:16px}
    .news-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:10px 24px}
    .news-item{display:grid;grid-template-columns:70px 1fr 24px;gap:16px;align-items:center;padding:23px 0;border-bottom:1px solid var(--line);transition:.2s ease}
    .news-item:last-child{border-bottom:0}
    .news-item:hover{padding-left:7px}
    .news-date strong{display:block;font-size:20px;line-height:1;color:var(--coral)}
    .news-date span{display:block;color:var(--muted);font-size:11px;margin-top:6px}
    .news-item h3{font-size:17px;line-height:1.45;margin:0 0 5px}
    .news-item p{font-size:13px;color:var(--muted);margin:0;line-height:1.55}
    .arrow{font-size:21px;color:var(--coral)}
    .entry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .entry{padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);transition:.2s ease}
    .entry:hover{transform:translateY(-4px);box-shadow:var(--shadow-soft);border-color:var(--coral)}
    .entry-no{color:var(--coral);font-size:12px;font-weight:900;letter-spacing:1px}
    .entry h3{font-size:18px;margin:16px 0 7px}
    .entry p{margin:0;color:var(--muted);font-size:13px;line-height:1.7}
    .entry a{display:inline-block;margin-top:17px;font-size:13px;font-weight:800;color:var(--coral-deep)}
    .timeline{position:relative;max-width:920px;margin:0 auto;padding-left:50px}
    .timeline:before{content:"";position:absolute;left:14px;top:8px;bottom:8px;width:2px;background:#514d47}
    .timeline-item{position:relative;padding:0 0 30px}
    .timeline-item:last-child{padding-bottom:0}
    .timeline-dot{position:absolute;left:-43px;top:5px;width:16px;height:16px;border:4px solid var(--ink);border-radius:50%;background:var(--coral)}
    .timeline-item h3{margin:0 0 5px;font-size:19px}
    .timeline-item p{margin:0;color:#c9c2b9;font-size:14px}
    .timeline-tag{display:inline-block;margin-bottom:7px;padding:3px 9px;border-radius:999px;background:var(--lime);color:var(--ink);font-size:11px;font-weight:900}
    .faq-grid{display:grid;grid-template-columns:.72fr 1.28fr;gap:60px;align-items:start}
    .faq-lead p{color:var(--muted);font-size:15px}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:19px 0;border:0;background:transparent;color:var(--ink);text-align:left;font-weight:800}
    .faq-question span:last-child{font-size:24px;color:var(--coral);transition:.2s ease}
    .faq-answer{display:none;padding:0 38px 20px 0;color:var(--muted);font-size:14px;line-height:1.8}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta{padding:42px 48px;border-radius:var(--radius-lg);background:var(--coral);color:#fff;display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta h2{margin:0 0 8px;font-size:30px;line-height:1.3}
    .cta p{margin:0;color:#ffe5de;font-size:14px}
    .cta .btn{background:#fff;color:var(--ink)}
    .cta .btn:hover{background:var(--lime-pale)}
    .site-footer{padding:58px 0 24px;background:var(--ink);color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.5fr .8fr .8fr .8fr;gap:45px}
    .footer-brand{color:#fff}
    .footer-brand-mark{box-shadow:4px 4px 0 var(--lime)}
    .footer-intro{max-width:360px;margin:18px 0 0;color:#bcb5ac;font-size:13px;line-height:1.8}
    .footer-col{display:flex;flex-direction:column;gap:9px}
    .footer-col h3{margin:0 0 8px;color:var(--lime);font-size:14px}
    .footer-col a{color:#c9c2b9;font-size:13px;transition:.2s ease}
    .footer-col a:hover{color:#fff;padding-left:4px}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:45px;padding-top:20px;border-top:1px solid #4a4640;color:#99938b;font-size:12px}
    @media(max-width:1024px){
      .nav-wrap{gap:10px}
      .brand{min-width:205px;font-size:15px}
      .nav a{padding-left:8px;padding-right:8px;font-size:13px}
      .nav a:after{left:8px;right:8px}
      .hero-inner,.lead-layout{grid-template-columns:1fr 1fr;gap:28px}
      .entry-grid{grid-template-columns:repeat(2,1fr)}
      .faq-grid{gap:30px}
    }
    @media(max-width:767px){
      .container{width:min(var(--container),calc(100% - 36px))}
      .topline-inner{min-height:36px;font-size:12px}
      .topline-inner a{display:none}
      .nav-wrap{height:68px}
      .brand{min-width:0;font-size:14px}
      .brand-mark{width:34px;height:34px}
      .nav{display:none;position:absolute;top:68px;left:0;right:0;padding:12px 18px 20px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--shadow-soft);flex-direction:column;align-items:stretch}
      .nav.open{display:flex}
      .nav a{padding:13px 4px;border-bottom:1px solid var(--line)}
      .nav a:last-child{border-bottom:0}
      .nav a:after{left:0;right:auto;bottom:7px;width:30px}
      .nav-download{display:none}
      .menu-toggle{display:grid;place-items:center}
      .page-hero{padding:48px 0 64px}
      .hero-inner{display:flex;flex-direction:column;align-items:stretch;gap:38px}
      .page-hero h1{font-size:38px;letter-spacing:-1.6px}
      .hero-copy{font-size:15px}
      .hero-actions .btn{flex:1 1 145px}
      .news-panel{box-shadow:8px 8px 0 rgba(157,202,69,.9)}
      .section{padding:64px 0}
      .section-head{display:block;margin-bottom:23px}
      .section-desc{margin-top:12px}
      .lead-layout{display:block}
      .lead-card{min-height:360px;margin-bottom:16px;padding:24px}
      .lead-card h3{font-size:23px}
      .news-list{padding:8px 17px}
      .news-item{grid-template-columns:57px 1fr 15px;gap:11px;padding:18px 0}
      .news-item h3{font-size:15px}
      .news-item p{font-size:12px}
      .entry-grid{grid-template-columns:1fr 1fr;gap:10px}
      .entry{padding:18px 15px}
      .entry h3{font-size:16px;margin-top:12px}
      .timeline{padding-left:39px}
      .timeline:before{left:10px}
      .timeline-dot{left:-36px}
      .faq-grid{display:block}
      .faq-lead{margin-bottom:25px}
      .cta{display:block;padding:30px 24px}
      .cta h2{font-size:25px}
      .cta .btn{margin-top:20px;width:100%}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px 20px}
      .footer-grid>div:first-child{grid-column:1/-1}
      .footer-bottom{display:block;margin-top:32px}
      .footer-bottom span{display:block;margin-top:12px}
    }
    @media(max-width:520px){
      .container{width:calc(100% - 32px)}
      .topline-inner{display:block;padding:7px 0;text-align:center}
      .page-hero h1{font-size:34px}
      .hero-actions{display:grid;grid-template-columns:1fr}
      .hero-actions .btn{width:100%}
      .panel-line{grid-template-columns:34px 1fr;gap:10px}
      .panel-line strong{font-size:14px}
      .entry-grid{grid-template-columns:1fr}
      .entry{display:grid;grid-template-columns:42px 1fr;column-gap:12px}
      .entry-no{grid-row:span 2}
      .entry h3{margin:0 0 4px}
      .entry p{grid-column:2}
      .entry a{grid-column:2;margin-top:9px}
      .footer-grid{grid-template-columns:1fr}
      .footer-grid>div:first-child{grid-column:auto}
      .footer-bottom{font-size:11px}
    }

/* roulang page: article */
:root{
      --coral:#f06445;
      --coral-deep:#d94d32;
      --coral-pale:#fff0eb;
      --lime:#9dca45;
      --lime-pale:#f1f8df;
      --ink:#252422;
      --ink-soft:#494743;
      --muted:#77736d;
      --paper:#fffdf9;
      --warm:#f5f1ea;
      --sand:#e8e0d5;
      --line:#ded6cb;
      --white:#ffffff;
      --radius-sm:10px;
      --radius-md:18px;
      --radius-lg:28px;
      --shadow:0 16px 36px rgba(42,35,28,.09);
      --shadow-soft:0 8px 22px rgba(42,35,28,.07);
      --container:1200px;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:var(--paper);
      color:var(--ink);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      font-size:16px;
      line-height:1.75;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    a:hover{color:inherit}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    img{max-width:100%;display:block}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}

    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,253,249,.97);
      border-bottom:1px solid var(--line);
      backdrop-filter:blur(12px);
    }
    .nav-wrap{
      min-height:78px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:inline-flex;
      align-items:center;
      gap:10px;
      min-width:230px;
      color:var(--ink);
      font-weight:800;
      font-size:17px;
      letter-spacing:-.4px;
    }
    .brand-mark{
      width:37px;
      height:37px;
      display:grid;
      place-items:center;
      border-radius:12px;
      background:var(--coral);
      color:#fff;
      box-shadow:4px 4px 0 var(--ink);
      flex:0 0 auto;
    }
    .brand-mark svg{width:22px;height:22px}
    .nav{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:3px;
      flex:1;
    }
    .nav a{
      position:relative;
      padding:11px 12px;
      color:var(--ink-soft);
      font-size:14px;
      font-weight:700;
      white-space:nowrap;
      transition:.2s ease;
    }
    .nav a:after{
      content:"";
      position:absolute;
      height:3px;
      left:12px;
      right:12px;
      bottom:4px;
      background:var(--coral);
      transform:scaleX(0);
      transform-origin:left;
      transition:.2s ease;
    }
    .nav a:hover,.nav a.active{color:var(--ink)}
    .nav a:hover:after,.nav a.active:after{transform:scaleX(1)}
    .btn{
      min-height:46px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      padding:11px 19px;
      border:1px solid transparent;
      border-radius:999px;
      font-weight:800;
      font-size:14px;
      line-height:1.2;
      transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,
    .nav a:focus-visible,
    .menu-toggle:focus-visible,
    .faq-question:focus-visible{
      outline:3px solid rgba(240,100,69,.35);
      outline-offset:3px;
    }
    .btn-primary{
      background:var(--coral);
      color:#fff;
      box-shadow:0 8px 18px rgba(240,100,69,.25);
    }
    .btn-primary:hover{
      background:var(--coral-deep);
      color:#fff;
      box-shadow:0 12px 24px rgba(240,100,69,.31);
    }
    .btn-dark{background:var(--ink);color:#fff}
    .btn-dark:hover{background:#403d39;color:#fff}
    .btn-light{background:#fff;color:var(--ink);border-color:var(--line)}
    .btn-light:hover{border-color:var(--ink);box-shadow:var(--shadow-soft)}
    .nav-download{white-space:nowrap}
    .menu-toggle{
      display:none;
      width:44px;
      height:44px;
      border:1px solid var(--line);
      border-radius:10px;
      background:#fff;
      color:var(--ink);
    }

    .article-hero{
      position:relative;
      overflow:hidden;
      background:var(--ink);
      color:#fff;
      padding:62px 0 70px;
    }
    .article-hero:before{
      content:"";
      position:absolute;
      width:560px;
      height:560px;
      right:-190px;
      top:-290px;
      border:1px solid rgba(255,255,255,.15);
      border-radius:50%;
      box-shadow:0 0 0 48px rgba(255,255,255,.035),0 0 0 98px rgba(255,255,255,.025);
    }
    .article-hero:after{
      content:"";
      position:absolute;
      left:7%;
      bottom:-92px;
      width:380px;
      height:145px;
      background:var(--coral);
      transform:rotate(-7deg);
    }
    .hero-inner{position:relative;z-index:1}
    .breadcrumb{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:9px;
      margin:0 0 22px;
      color:#bdb6ad;
      font-size:13px;
    }
    .breadcrumb a{color:#e5ded4}
    .breadcrumb a:hover{color:#ff9a82}
    .breadcrumb-separator{color:#817a71}
    .article-label{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:6px 11px;
      border:1px solid rgba(255,255,255,.22);
      border-radius:999px;
      color:#e9e1d6;
      font-size:12px;
      font-weight:800;
    }
    .article-label i{
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--lime);
      box-shadow:0 0 0 5px rgba(157,202,69,.14);
    }
    .article-hero h1{
      max-width:900px;
      margin:20px 0 18px;
      font-size:clamp(34px,5vw,58px);
      line-height:1.2;
      letter-spacing:-2px;
      overflow-wrap:anywhere;
    }
    .article-summary{
      max-width:780px;
      margin:0;
      color:#d9d3ca;
      font-size:17px;
      line-height:1.9;
    }
    .article-meta{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:12px 24px;
      margin-top:28px;
      color:#bcb5ac;
      font-size:13px;
    }
    .meta-item{display:inline-flex;align-items:center;gap:7px}
    .meta-dot{
      width:6px;
      height:6px;
      border-radius:50%;
      background:var(--coral);
    }

    .article-layout{
      display:grid;
      grid-template-columns:minmax(0,820px) 300px;
      gap:58px;
      align-items:start;
      padding:76px 0 94px;
    }
    .article-content{
      min-width:0;
      color:var(--ink-soft);
      font-size:17px;
      line-height:2;
    }
    .article-content > :first-child{margin-top:0}
    .article-content h2,
    .article-content h3{
      color:var(--ink);
      font-weight:900;
      letter-spacing:-.6px;
      line-height:1.35;
    }
    .article-content h2{
      position:relative;
      margin:44px 0 17px;
      padding-left:17px;
      font-size:29px;
    }
    .article-content h2:before{
      content:"";
      position:absolute;
      left:0;
      top:5px;
      bottom:5px;
      width:5px;
      border-radius:5px;
      background:var(--coral);
    }
    .article-content h3{
      margin:32px 0 12px;
      font-size:22px;
    }
    .article-content p{margin:0 0 22px}
    .article-content a{
      color:var(--coral-deep);
      text-decoration:underline;
      text-underline-offset:3px;
    }
    .article-content ul,
    .article-content ol{
      margin:18px 0 25px;
      padding-left:25px;
    }
    .article-content li{padding-left:5px;margin:6px 0}
    .article-content blockquote{
      margin:30px 0;
      padding:22px 25px;
      border-left:4px solid var(--lime);
      background:var(--lime-pale);
      color:var(--ink);
      border-radius:0 var(--radius-sm) var(--radius-sm) 0;
    }
    .article-content img{
      width:auto;
      max-width:100%;
      height:auto;
      margin:30px auto;
      border-radius:var(--radius-md);
      box-shadow:var(--shadow-soft);
    }
    .article-content figure{margin:32px 0}
    .article-content figcaption{
      margin-top:9px;
      color:var(--muted);
      text-align:center;
      font-size:13px;
      line-height:1.6;
    }
    .article-content table{
      width:100%;
      margin:28px 0;
      border-collapse:collapse;
      font-size:15px;
      background:#fff;
    }
    .article-content th,
    .article-content td{
      padding:12px 14px;
      border:1px solid var(--line);
      text-align:left;
    }
    .article-content th{background:var(--warm);color:var(--ink);font-weight:800}

    .article-aside{
      position:sticky;
      top:105px;
      display:flex;
      flex-direction:column;
      gap:18px;
    }
    .aside-card{
      padding:23px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius-md);
      box-shadow:var(--shadow-soft);
    }
    .aside-card.dark{
      background:var(--ink);
      color:#fff;
      border-color:var(--ink);
    }
    .aside-kicker{
      margin-bottom:8px;
      color:var(--coral);
      font-size:12px;
      font-weight:900;
      letter-spacing:.7px;
      text-transform:uppercase;
    }
    .dark .aside-kicker{color:var(--lime)}
    .aside-card h2{
      margin:0 0 15px;
      font-size:20px;
      line-height:1.4;
      letter-spacing:-.4px;
    }
    .aside-links{
      display:flex;
      flex-direction:column;
      gap:0;
      margin:0;
      padding:0;
      list-style:none;
    }
    .aside-links li{border-top:1px solid var(--line)}
    .aside-links a{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:11px 0;
      color:var(--ink-soft);
      font-size:14px;
      font-weight:700;
      transition:.2s ease;
    }
    .aside-links a:hover{color:var(--coral-deep);padding-left:4px}
    .aside-links span{color:var(--coral);font-size:17px}
    .download-symbol{
      width:50px;
      height:50px;
      display:grid;
      place-items:center;
      margin-bottom:16px;
      border-radius:15px;
      background:var(--coral);
      color:#fff;
    }
    .download-symbol svg{width:25px;height:25px}
    .dark .aside-copy{color:#c9c2b9}
    .aside-copy{margin:0 0 18px;color:var(--muted);font-size:14px;line-height:1.75}
    .aside-card .btn{width:100%}

    .article-bottom{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      margin-top:52px;
      padding-top:27px;
      border-top:1px solid var(--line);
    }
    .article-bottom-note{color:var(--muted);font-size:13px}
    .related-section{
      padding:78px 0;
      background:var(--warm);
    }
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:25px;
      margin-bottom:27px;
    }
    .kicker{
      margin:0 0 8px;
      color:var(--coral-deep);
      font-size:12px;
      font-weight:900;
      letter-spacing:1px;
    }
    .section-title{
      margin:0;
      color:var(--ink);
      font-size:clamp(27px,3vw,38px);
      line-height:1.25;
      letter-spacing:-1px;
    }
    .section-desc{
      max-width:470px;
      margin:0;
      color:var(--muted);
      font-size:15px;
    }
    .related-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:16px;
    }
    .related-card{
      display:flex;
      flex-direction:column;
      min-height:205px;
      padding:22px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius-md);
      transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
    }
    .related-card:hover{
      transform:translateY(-4px);
      border-color:var(--coral);
      box-shadow:var(--shadow-soft);
    }
    .related-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-bottom:17px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      min-height:25px;
      padding:3px 9px;
      border-radius:999px;
      background:var(--coral-pale);
      color:var(--coral-deep);
      font-size:12px;
      font-weight:800;
    }
    .related-time{color:var(--muted);font-size:12px}
    .related-card h3{
      margin:0;
      color:var(--ink);
      font-size:18px;
      line-height:1.45;
    }
    .related-card p{
      margin:9px 0 0;
      color:var(--muted);
      font-size:14px;
      line-height:1.7;
    }
    .related-arrow{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      margin-top:auto;
      padding-top:18px;
      color:var(--coral-deep);
      font-size:13px;
      font-weight:800;
    }
    .empty-state{
      padding:50px 30px;
      text-align:center;
      background:var(--warm);
      border:1px dashed var(--line);
      border-radius:var(--radius-md);
    }
    .empty-icon{
      width:58px;
      height:58px;
      display:grid;
      place-items:center;
      margin:0 auto 15px;
      border-radius:18px;
      background:var(--coral-pale);
      color:var(--coral);
    }
    .empty-state h2{margin:0 0 7px;font-size:23px;color:var(--ink)}
    .empty-state p{margin:0 0 20px;color:var(--muted);font-size:14px}

    .cta-section{padding:76px 0}
    .cta-box{
      position:relative;
      overflow:hidden;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:30px;
      padding:38px 44px;
      background:var(--coral);
      color:#fff;
      border-radius:var(--radius-lg);
    }
    .cta-box:after{
      content:"";
      position:absolute;
      width:240px;
      height:240px;
      right:80px;
      top:-145px;
      border:1px solid rgba(255,255,255,.28);
      border-radius:50%;
      box-shadow:0 0 0 30px rgba(255,255,255,.08),0 0 0 60px rgba(255,255,255,.05);
    }
    .cta-copy{position:relative;z-index:1}
    .cta-copy h2{
      margin:0 0 8px;
      font-size:clamp(25px,3vw,34px);
      line-height:1.3;
      letter-spacing:-.8px;
    }
    .cta-copy p{margin:0;color:#ffe6df;font-size:15px}
    .cta-box .btn{position:relative;z-index:1;flex:0 0 auto}

    .site-footer{
      padding:52px 0 22px;
      background:var(--ink);
      color:#fff;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.5fr 1fr 1fr 1fr;
      gap:35px;
      padding-bottom:42px;
    }
    .footer-brand{min-width:0;color:#fff}
    .footer-brand-mark{box-shadow:4px 4px 0 var(--coral-deep)}
    .footer-intro{
      max-width:330px;
      margin:20px 0 0;
      color:#bdb6ad;
      font-size:13px;
      line-height:1.8;
    }
    .footer-col{display:flex;flex-direction:column;align-items:flex-start;gap:8px}
    .footer-col h3{
      margin:0 0 9px;
      color:#fff;
      font-size:14px;
    }
    .footer-col a{
      color:#bdb6ad;
      font-size:13px;
      transition:.2s ease;
    }
    .footer-col a:hover{color:#ff9a82;transform:translateX(3px)}
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:20px;
      padding-top:19px;
      border-top:1px solid rgba(255,255,255,.14);
      color:#8e887f;
      font-size:12px;
    }

    @media (max-width:1024px){
      .container{width:min(var(--container),calc(100% - 40px))}
      .brand{min-width:auto}
      .nav{gap:0}
      .nav a{padding-left:8px;padding-right:8px;font-size:13px}
      .nav a:after{left:8px;right:8px}
      .article-layout{grid-template-columns:minmax(0,1fr) 270px;gap:34px}
      .footer-grid{grid-template-columns:1.3fr 1fr 1fr}
      .footer-grid>div:last-child{display:none}
    }

    @media (max-width:767px){
      .container{width:calc(100% - 32px)}
      .site-header{position:relative}
      .nav-wrap{min-height:70px}
      .nav-download{display:none}
      .menu-toggle{display:grid;place-items:center}
      .menu-toggle svg{width:22px;height:22px}
      .nav{
        position:absolute;
        left:16px;
        right:16px;
        top:78px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        padding:10px;
        background:#fffdf9;
        border:1px solid var(--line);
        border-radius:16px;
        box-shadow:var(--shadow);
      }
      .nav.is-open{display:flex}
      .nav a{padding:12px 13px;border-radius:9px}
      .nav a:hover,.nav a.active{background:var(--coral-pale)}
      .nav a:after{display:none}
      .article-hero{padding:42px 0 53px}
      .article-hero h1{font-size:35px;letter-spacing:-1.2px}
      .article-summary{font-size:15px;line-height:1.8}
      .article-meta{gap:8px 16px}
      .article-layout{
        display:block;
        padding:47px 0 65px;
      }
      .article-content{font-size:16px;line-height:1.9}
      .article-content h2{font-size:25px;margin-top:35px}
      .article-content h3{font-size:20px}
      .article-aside{
        position:static;
        margin-top:45px;
      }
      .article-bottom{
        align-items:flex-start;
        flex-direction:column;
      }
      .related-section{padding:60px 0}
      .section-head{display:block}
      .section-desc{margin-top:10px}
      .related-grid{grid-template-columns:1fr}
      .cta-section{padding:58px 0}
      .cta-box{
        display:block;
        padding:30px 24px;
      }
      .cta-box .btn{margin-top:22px}
      .footer-grid{
        grid-template-columns:1fr 1fr;
        gap:30px 20px;
      }
      .footer-grid>div:first-child{grid-column:1/-1}
      .footer-grid>div:last-child{display:flex}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:5px}
    }

    @media (max-width:520px){
      .brand{font-size:15px}
      .brand-mark{width:34px;height:34px;border-radius:10px}
      .article-hero h1{font-size:31px}
      .breadcrumb{font-size:12px}
      .article-content table{display:block;overflow-x:auto;white-space:nowrap}
      .cta-copy h2{font-size:25px}
      .footer-grid{grid-template-columns:1fr}
      .footer-grid>div:first-child{grid-column:auto}
    }

/* roulang page: category2 */
:root{
      --coral:#f06445;
      --coral-deep:#d94d32;
      --coral-pale:#fff0eb;
      --lime:#9dca45;
      --lime-pale:#f1f8df;
      --ink:#252422;
      --ink-soft:#494743;
      --muted:#77736d;
      --paper:#fffdf9;
      --warm:#f5f1ea;
      --sand:#e8e0d5;
      --line:#ded6cb;
      --white:#fff;
      --radius-sm:10px;
      --radius-md:18px;
      --radius-lg:28px;
      --shadow:0 16px 36px rgba(42,35,28,.09);
      --shadow-soft:0 8px 22px rgba(42,35,28,.07);
      --container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .topline{background:var(--ink);color:#f7f1e8;font-size:13px}
    .topline-inner{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:16px}
    .topline strong{color:#dff0b5}
    .topline a{text-decoration:underline;text-underline-offset:3px}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,253,249,.97);border-bottom:1px solid var(--line)}
    .nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:inline-flex;align-items:center;gap:10px;min-width:230px;font-weight:800;font-size:17px;letter-spacing:-.4px}
    .brand-mark{width:37px;height:37px;display:grid;place-items:center;border-radius:12px;background:var(--coral);color:#fff;box-shadow:4px 4px 0 var(--ink)}
    .brand-mark svg{width:22px;height:22px}
    .nav{display:flex;align-items:center;justify-content:center;gap:3px;flex:1}
    .nav a{position:relative;padding:11px 12px;color:var(--ink-soft);font-size:14px;font-weight:700;white-space:nowrap;transition:.2s ease}
    .nav a:after{content:"";position:absolute;height:3px;left:12px;right:12px;bottom:4px;background:var(--coral);transform:scaleX(0);transform-origin:left;transition:.2s ease}
    .nav a:hover,.nav a.active{color:var(--ink)}
    .nav a:hover:after,.nav a.active:after{transform:scaleX(1)}
    .btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 19px;border:1px solid transparent;border-radius:999px;font-weight:800;font-size:14px;transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease}
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,.nav a:focus-visible,.faq-question:focus-visible,.menu-toggle:focus-visible{outline:3px solid rgba(240,100,69,.35);outline-offset:3px}
    .btn-primary{background:var(--coral);color:#fff;box-shadow:0 8px 18px rgba(240,100,69,.25)}
    .btn-primary:hover{background:var(--coral-deep);box-shadow:0 12px 24px rgba(240,100,69,.31)}
    .btn-dark{background:var(--ink);color:#fff}
    .btn-dark:hover{background:#403d39}
    .btn-light{background:#fff;color:var(--ink);border-color:var(--line)}
    .btn-light:hover{border-color:var(--ink);box-shadow:var(--shadow-soft)}
    .menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
    .hero{position:relative;overflow:hidden;background:var(--ink);color:#fff;padding:72px 0 82px}
    .hero:before{content:"";position:absolute;width:560px;height:560px;right:-180px;top:-260px;border:1px solid rgba(255,255,255,.15);border-radius:50%;box-shadow:0 0 0 50px rgba(255,255,255,.03),0 0 0 100px rgba(255,255,255,.025)}
    .hero:after{content:"";position:absolute;left:7%;bottom:-94px;width:380px;height:150px;background:var(--coral);transform:rotate(-7deg)}
    .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr .86fr;gap:72px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 11px;border:1px solid rgba(255,255,255,.23);border-radius:999px;color:#e9e1d6;font-size:12px;font-weight:700}
    .eyebrow span{color:var(--lime)}
    .hero h1{max-width:680px;margin:20px 0 18px;font-size:clamp(40px,5.4vw,66px);line-height:1.13;letter-spacing:-2.5px}
    .hero h1 em{font-style:normal;color:#ff9a82}
    .hero-copy{max-width:650px;margin:0;color:#d9d3ca;font-size:17px;line-height:1.9}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
    .hero-note{margin:20px 0 0;color:#bcb5ac;font-size:13px}
    .hero-note strong{color:#e0f3af}
    .device-stage{position:relative;min-height:430px;display:flex;align-items:center;justify-content:center}
    .device-shadow{position:absolute;width:290px;height:30px;bottom:14px;border-radius:50%;background:rgba(0,0,0,.35);filter:blur(10px)}
    .phone{position:relative;width:260px;height:480px;padding:10px;border:7px solid #111;border-radius:36px;background:#111;box-shadow:18px 18px 0 rgba(240,100,69,.85),0 25px 45px rgba(0,0,0,.35);transform:rotate(4deg)}
    .phone-notch{position:absolute;z-index:2;left:50%;top:7px;width:84px;height:18px;transform:translateX(-50%);border-radius:0 0 14px 14px;background:#111}
    .phone-screen{height:100%;overflow:hidden;border-radius:25px;background:#f7f1e8;color:var(--ink)}
    .screen-top{padding:24px 17px 15px;background:var(--coral);color:#fff}
    .screen-top small{font-size:10px;opacity:.8}
    .screen-top strong{display:block;margin-top:4px;font-size:20px}
    .screen-body{padding:15px}
    .screen-label{display:flex;justify-content:space-between;font-size:11px;font-weight:800}
    .screen-line{height:74px;margin-top:10px;border-radius:12px;background:#fff;border:1px solid #e9dfd2;padding:11px}
    .screen-line b{display:block;font-size:13px}
    .screen-line span{display:block;margin-top:5px;color:var(--muted);font-size:10px}
    .screen-line i{display:inline-block;width:28px;height:5px;margin-top:8px;border-radius:8px;background:var(--lime)}
    .screen-nav{position:absolute;left:10px;right:10px;bottom:10px;display:flex;justify-content:space-around;padding:9px 4px;border-radius:20px;background:#252422;color:#fff;font-size:9px}
    .section{padding:88px 0}
    .section-warm{background:var(--warm)}
    .section-dark{background:var(--ink);color:#fff}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:32px}
    .kicker{margin-bottom:9px;color:var(--coral);font-size:12px;font-weight:900;letter-spacing:1.5px;text-transform:uppercase}
    .section-title{margin:0;font-size:clamp(28px,3vw,40px);line-height:1.25;letter-spacing:-1px}
    .section-desc{max-width:500px;margin:0;color:var(--muted);font-size:15px}
    .download-panel{display:grid;grid-template-columns:1fr 1.05fr;gap:52px;align-items:center}
    .app-preview{position:relative;min-height:390px;padding:32px;border-radius:var(--radius-lg);background:#e3d8c9;overflow:hidden}
    .app-preview:after{content:"";position:absolute;right:-60px;bottom:-100px;width:280px;height:280px;border-radius:50%;background:var(--lime);opacity:.8}
    .preview-window{position:relative;z-index:1;width:min(100%,440px);margin:auto;padding:20px;border-radius:20px;background:#fffdf9;box-shadow:var(--shadow);transform:rotate(-3deg)}
    .preview-bar{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
    .preview-brand{font-size:17px;font-weight:900}
    .preview-brand span{display:inline-block;width:9px;height:9px;margin-right:6px;border-radius:50%;background:var(--coral)}
    .preview-pill{padding:4px 9px;border-radius:99px;background:var(--lime-pale);color:#607f20;font-size:11px;font-weight:800}
    .preview-feature{height:120px;margin:18px 0;padding:20px;border-radius:15px;background:var(--ink);color:#fff}
    .preview-feature small{color:#ffad98;font-size:11px}
    .preview-feature strong{display:block;max-width:235px;margin-top:8px;font-size:20px;line-height:1.3}
    .preview-list{display:grid;gap:10px}
    .preview-list div{display:flex;align-items:center;gap:10px;padding:10px;border-bottom:1px solid var(--line);font-size:13px;font-weight:700}
    .preview-list i{width:26px;height:26px;flex:none;border-radius:8px;background:var(--coral-pale);color:var(--coral-deep);font-size:11px}
    .download-copy h2{margin:0 0 15px;font-size:clamp(28px,3vw,40px);line-height:1.3}
    .download-copy>p{margin:0 0 24px;color:var(--muted);font-size:16px;line-height:1.85}
    .download-meta{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 25px}
    .meta-chip{padding:8px 12px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--ink-soft);font-size:12px;font-weight:700}
    .download-actions{display:flex;flex-wrap:wrap;gap:12px}
    .download-note{margin:16px 0 0;color:var(--muted);font-size:13px}
    .qr-card{display:flex;align-items:center;gap:15px;margin-top:26px;padding:14px;border:1px dashed #cfc3b6;border-radius:15px;background:#fffaf3}
    .qr-placeholder{width:72px;height:72px;display:grid;place-items:center;border:5px solid var(--ink);background:repeating-linear-gradient(45deg,#252422 0 4px,#fff 4px 8px);color:#fff;font-size:10px;font-weight:800;text-align:center}
    .qr-placeholder span{padding:3px;background:var(--ink)}
    .qr-card strong{display:block;font-size:14px}
    .qr-card p{margin:3px 0 0;color:var(--muted);font-size:12px;line-height:1.5}
    .steps-section{background:var(--paper)}
    .steps-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:65px;align-items:start}
    .steps-intro{position:sticky;top:120px}
    .steps-intro h2{margin:0 0 15px;font-size:36px;line-height:1.3}
    .steps-intro p{margin:0;color:var(--muted);line-height:1.85}
    .step-list{border-top:1px solid var(--line)}
    .step-item{display:grid;grid-template-columns:72px 1fr 36px;gap:20px;align-items:center;padding:25px 0;border-bottom:1px solid var(--line)}
    .step-number{width:54px;height:54px;display:grid;place-items:center;border-radius:16px;background:var(--ink);color:#fff;font-size:20px;font-weight:900}
    .step-item:nth-child(2) .step-number{background:var(--coral)}
    .step-item:nth-child(3) .step-number{background:var(--lime);color:var(--ink)}
    .step-item h3{margin:0 0 5px;font-size:20px}
    .step-item p{margin:0;color:var(--muted);font-size:14px}
    .step-arrow{color:var(--coral);font-size:24px}
    .compatibility{padding:25px;border-radius:var(--radius-md);background:var(--lime-pale);border-left:5px solid var(--lime)}
    .compatibility h3{margin:0 0 7px;font-size:19px}
    .compatibility p{margin:0;color:var(--ink-soft);font-size:14px}
    .faq-grid{display:grid;grid-template-columns:.76fr 1.24fr;gap:70px;align-items:start}
    .faq-intro h2{margin:0 0 14px;font-size:36px;line-height:1.3}
    .faq-intro p{margin:0;color:var(--muted);line-height:1.85}
    .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:20px;padding:20px 0;border:0;background:none;color:var(--ink);font-weight:800;text-align:left}
    .faq-question span:last-child{font-size:25px;color:var(--coral);transition:transform .2s ease}
    .faq-answer{display:none;padding:0 35px 20px 0;color:var(--muted);font-size:14px;line-height:1.85}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta{padding:58px 0;background:var(--coral)}
    .cta-box{display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta h2{margin:0 0 8px;color:#fff;font-size:clamp(26px,3vw,38px);line-height:1.25}
    .cta p{margin:0;color:#ffe1d8;font-size:15px}
    .cta .btn-light{border-color:rgba(255,255,255,.65)}
    .site-footer{padding:58px 0 24px;background:var(--ink);color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:45px;padding-bottom:42px}
    .footer-brand{color:#fff;min-width:0}
    .footer-brand-mark{box-shadow:4px 4px 0 var(--lime)}
    .footer-intro{max-width:340px;margin:20px 0 0;color:#bcb5ac;font-size:14px;line-height:1.8}
    .footer-col{display:flex;flex-direction:column;align-items:flex-start;gap:8px}
    .footer-col h3{margin:0 0 9px;color:#fff;font-size:15px}
    .footer-col a{color:#bcb5ac;font-size:13px;transition:color .2s ease,transform .2s ease}
    .footer-col a:hover{color:#fff;transform:translateX(3px)}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:20px;border-top:1px solid rgba(255,255,255,.15);color:#918b83;font-size:12px}
    @media (max-width:1024px){
      .nav-wrap{gap:12px}
      .brand{min-width:205px}
      .nav a{padding-left:8px;padding-right:8px;font-size:13px}
      .nav a:after{left:8px;right:8px}
      .hero-grid{grid-template-columns:1fr .8fr;gap:35px}
      .download-panel{gap:35px}
      .steps-layout,.faq-grid{gap:38px}
    }
    @media (max-width:767px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .topline-inner{min-height:34px;font-size:11px}
      .topline-inner span:last-child{display:none}
      .nav-wrap{height:68px}
      .brand{min-width:0;font-size:15px}
      .brand-mark{width:34px;height:34px;border-radius:10px}
      .brand-mark svg{width:20px;height:20px}
      .nav{position:absolute;top:68px;left:0;right:0;display:none;flex-direction:column;align-items:stretch;padding:10px 16px 18px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
      .nav.open{display:flex}
      .nav a{padding:13px 10px;font-size:15px}
      .nav a:after{left:10px;right:auto;width:35px;bottom:5px}
      .nav-download{display:none}
      .menu-toggle{display:grid;place-items:center}
      .hero{padding:48px 0 62px}
      .hero-grid{grid-template-columns:1fr;gap:35px}
      .hero h1{font-size:clamp(36px,11vw,47px);letter-spacing:-1.5px}
      .hero-copy{font-size:15px;line-height:1.8}
      .hero-actions{margin-top:22px}
      .hero-actions .btn{flex:1;min-width:145px}
      .device-stage{min-height:390px}
      .phone{width:220px;height:405px;border-radius:31px;box-shadow:13px 13px 0 rgba(240,100,69,.85)}
      .screen-top{padding:21px 14px 12px}
      .screen-top strong{font-size:17px}
      .screen-body{padding:12px}
      .screen-line{height:66px}
      .section{padding:62px 0}
      .section-head{display:block;margin-bottom:24px}
      .section-head .section-desc{margin-top:10px}
      .download-panel,.steps-layout,.faq-grid{grid-template-columns:1fr}
      .app-preview{min-height:315px;padding:20px}
      .preview-window{padding:14px}
      .preview-feature{height:100px;margin:13px 0;padding:14px}
      .preview-feature strong{font-size:16px}
      .steps-intro{position:static}
      .steps-intro h2,.faq-intro h2{font-size:29px}
      .step-item{grid-template-columns:56px 1fr 20px;gap:12px;padding:19px 0}
      .step-number{width:46px;height:46px;border-radius:13px;font-size:17px}
      .step-item h3{font-size:17px}
      .step-item p{font-size:13px;line-height:1.65}
      .cta-box{display:block}
      .cta h2{font-size:29px}
      .cta .btn{margin-top:20px;width:100%}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px 20px}
      .footer-grid>div:first-child{grid-column:1/-1}
      .footer-bottom{display:block;line-height:2}
      .footer-bottom span{display:block}
    }
    @media (max-width:520px){
      .hero-actions{display:grid}
      .hero-actions .btn{width:100%}
      .download-actions{display:grid}
      .download-actions .btn{width:100%}
      .qr-card{align-items:flex-start}
      .footer-grid{grid-template-columns:1fr}
      .footer-grid>div:first-child{grid-column:auto}
    }

/* roulang page: category4 */
:root{
      --coral:#f06445;
      --coral-deep:#d94d32;
      --coral-pale:#fff0eb;
      --lime:#9dca45;
      --lime-pale:#f1f8df;
      --ink:#252422;
      --ink-soft:#494743;
      --muted:#77736d;
      --paper:#fffdf9;
      --warm:#f5f1ea;
      --sand:#e8e0d5;
      --line:#ded6cb;
      --white:#fff;
      --radius-sm:10px;
      --radius-md:18px;
      --radius-lg:28px;
      --shadow:0 16px 36px rgba(42,35,28,.09);
      --shadow-soft:0 8px 22px rgba(42,35,28,.07);
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    img{max-width:100%;display:block}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,253,249,.98);border-bottom:1px solid var(--line)}
    .nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:inline-flex;align-items:center;gap:10px;min-width:230px;font-weight:800;font-size:17px;letter-spacing:-.4px}
    .brand-mark{width:37px;height:37px;display:grid;place-items:center;border-radius:12px;background:var(--coral);color:#fff;box-shadow:4px 4px 0 var(--ink)}
    .brand-mark svg{width:22px;height:22px}
    .nav{display:flex;align-items:center;justify-content:center;gap:3px;flex:1}
    .nav a{position:relative;padding:11px 12px;color:var(--ink-soft);font-size:14px;font-weight:700;white-space:nowrap;transition:.2s ease}
    .nav a:after{content:"";position:absolute;height:3px;left:12px;right:12px;bottom:4px;background:var(--coral);transform:scaleX(0);transform-origin:left;transition:.2s ease}
    .nav a:hover,.nav a.active{color:var(--ink)}
    .nav a:hover:after,.nav a.active:after{transform:scaleX(1)}
    .btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 19px;border:1px solid transparent;border-radius:999px;font-weight:800;font-size:14px;transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease}
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,.nav a:focus-visible,.faq-question:focus-visible{outline:3px solid rgba(240,100,69,.35);outline-offset:3px}
    .btn-primary{background:var(--coral);color:#fff;box-shadow:0 8px 18px rgba(240,100,69,.25)}
    .btn-primary:hover{background:var(--coral-deep);box-shadow:0 12px 24px rgba(240,100,69,.31)}
    .btn-dark{background:var(--ink);color:#fff}
    .btn-dark:hover{background:#403d39}
    .btn-light{background:#fff;color:var(--ink);border-color:var(--line)}
    .btn-light:hover{border-color:var(--ink);box-shadow:var(--shadow-soft)}
    .nav-download{white-space:nowrap}
    .menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
    .notice{background:var(--ink);color:#eee5da;padding:9px 0;font-size:13px}
    .notice .container{display:flex;align-items:center;justify-content:space-between;gap:20px}
    .notice strong{color:#dff0b5;margin-right:10px}
    .notice a{text-decoration:underline;text-underline-offset:3px}
    .page-hero{background:var(--warm);padding:72px 0 66px;border-bottom:1px solid var(--line);overflow:hidden}
    .hero-layout{display:grid;grid-template-columns:1fr 390px;gap:70px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--coral-deep);font-size:13px;font-weight:800;letter-spacing:.5px}
    .eyebrow:before{content:"";width:28px;height:4px;border-radius:5px;background:var(--coral)}
    h1{font-size:clamp(38px,5vw,62px);line-height:1.15;letter-spacing:-2.4px;margin:17px 0 20px;max-width:720px}
    .hero-copy{max-width:690px;color:var(--ink-soft);font-size:17px;line-height:1.9;margin:0}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
    .update-card{background:var(--ink);color:#fff;padding:27px;border-radius:var(--radius-lg);box-shadow:14px 14px 0 var(--coral);position:relative}
    .update-card:before{content:"版本记录";position:absolute;right:22px;top:22px;color:#a9d15b;font-size:12px;font-weight:800}
    .update-card h2{font-size:25px;margin:36px 0 7px}
    .update-card p{color:#cfc7bd;margin:0;font-size:14px}
    .status-line{display:flex;align-items:center;gap:9px;margin-top:24px;color:#dff0b5;font-size:13px}
    .status-dot{width:9px;height:9px;border-radius:50%;background:var(--lime)}
    .section{padding:88px 0}
    .section-warm{background:var(--warm)}
    .section-dark{background:var(--ink);color:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:34px}
    .kicker{color:var(--coral-deep);font-size:12px;font-weight:900;letter-spacing:1.4px;text-transform:uppercase}
    .section-title{margin:5px 0 0;font-size:clamp(27px,3vw,38px);line-height:1.25;letter-spacing:-1px}
    .section-desc{max-width:480px;margin:0;color:var(--muted);font-size:15px}
    .timeline{position:relative;max-width:920px;margin:0 auto}
    .timeline:before{content:"";position:absolute;left:113px;top:0;bottom:0;width:2px;background:var(--sand)}
    .timeline-item{display:grid;grid-template-columns:88px 28px 1fr;gap:15px;align-items:start;position:relative;padding-bottom:30px}
    .timeline-date{font-size:13px;color:var(--muted);font-weight:800;text-align:right;padding-top:20px}
    .timeline-node{width:14px;height:14px;border-radius:50%;background:var(--coral);border:4px solid var(--coral-pale);margin:20px auto 0;z-index:1}
    .timeline-item.latest .timeline-node{background:var(--lime);border-color:var(--lime-pale);box-shadow:0 0 0 5px rgba(157,202,69,.14)}
    .version-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:22px 24px;transition:.2s ease}
    .version-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-soft);border-color:#c9bcae}
    .version-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
    .version-name{font-size:20px;font-weight:900}
    .badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:800}
    .badge-lime{background:var(--lime-pale);color:#587522}
    .badge-coral{background:var(--coral-pale);color:var(--coral-deep)}
    .version-card p{color:var(--ink-soft);margin:10px 0 15px;font-size:15px}
    .version-meta{display:flex;flex-wrap:wrap;gap:8px 20px;color:var(--muted);font-size:13px}
    .version-link{display:inline-flex;margin-top:14px;color:var(--coral-deep);font-size:14px;font-weight:800}
    .version-link:hover{text-decoration:underline;text-underline-offset:4px}
    .record-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden}
    .record-cell{background:#fff;padding:24px}
    .record-cell strong{display:block;font-size:24px;line-height:1.2;margin-bottom:5px}
    .record-cell span{color:var(--muted);font-size:14px}
    .guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
    .guide-card{display:flex;gap:18px;background:#fff;border:1px solid var(--line);padding:24px;border-radius:var(--radius-md)}
    .guide-number{flex:0 0 42px;height:42px;display:grid;place-items:center;background:var(--coral);color:#fff;border-radius:12px;font-size:18px;font-weight:900}
    .guide-card h3{font-size:18px;margin:0 0 5px}
    .guide-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
    .faq-list{max-width:860px;margin:0 auto}
    .faq-item{border-top:1px solid var(--line)}
    .faq-item:last-child{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:22px 0;background:none;border:0;text-align:left;color:var(--ink);font-weight:800;font-size:17px}
    .faq-question span:last-child{font-size:25px;color:var(--coral);font-weight:400;transition:transform .2s}
    .faq-answer{display:none;color:var(--muted);font-size:15px;padding:0 45px 22px 0}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta{background:var(--coral);color:#fff;border-radius:var(--radius-lg);padding:42px 48px;display:flex;align-items:center;justify-content:space-between;gap:30px;overflow:hidden;position:relative}
    .cta:after{content:"";position:absolute;width:240px;height:240px;border:1px solid rgba(255,255,255,.28);border-radius:50%;right:80px;top:-125px}
    .cta h2{font-size:30px;line-height:1.3;margin:0 0 8px;position:relative;z-index:1}
    .cta p{margin:0;color:#ffe5de;position:relative;z-index:1}
    .cta .btn{position:relative;z-index:1}
    .site-footer{background:var(--ink);color:#fff;padding:62px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
    .footer-brand{min-width:0;color:#fff}
    .footer-brand-mark{box-shadow:4px 4px 0 var(--lime)}
    .footer-intro{max-width:300px;color:#bdb5aa;font-size:14px;line-height:1.8;margin:19px 0 0}
    .footer-col{display:flex;flex-direction:column;gap:9px}
    .footer-col h3{font-size:15px;margin:2px 0 10px;color:#fff}
    .footer-col a{color:#bdb5aa;font-size:14px;transition:.2s}
    .footer-col a:hover{color:#ff9a82;padding-left:3px}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #49443e;margin-top:48px;padding-top:20px;color:#918a81;font-size:12px}
    @media(max-width:1024px){
      .nav a{padding-left:8px;padding-right:8px;font-size:13px}
      .nav a:after{left:8px;right:8px}
      .hero-layout{grid-template-columns:1fr 340px;gap:35px}
      .footer-grid{grid-template-columns:1.3fr 1fr 1fr}
      .footer-grid>div:last-child{display:none}
    }
    @media(max-width:767px){
      .container{width:min(100% - 32px,var(--container))}
      .nav-wrap{height:68px}
      .brand{min-width:0;font-size:15px}
      .brand-mark{width:34px;height:34px}
      .nav-download{display:none}
      .menu-toggle{display:block}
      .nav{display:none;position:absolute;left:16px;right:16px;top:76px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:9px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav.show{display:flex}
      .nav a{padding:12px 14px}
      .nav a:after{left:14px;right:auto;width:30px;bottom:5px}
      .notice{font-size:12px}
      .notice .container{display:block;padding:6px 0}
      .notice a{display:none}
      .page-hero{padding:50px 0 45px}
      .hero-layout{grid-template-columns:1fr;gap:36px}
      h1{font-size:39px;letter-spacing:-1.5px}
      .hero-copy{font-size:15px}
      .update-card{max-width:calc(100% - 14px)}
      .section{padding:62px 0}
      .section-head{display:block}
      .section-desc{margin-top:13px}
      .timeline:before{left:8px}
      .timeline-item{grid-template-columns:28px 1fr;gap:15px}
      .timeline-date{grid-column:2;text-align:left;padding:0 0 4px}
      .timeline-node{grid-column:1;grid-row:1 / span 2;margin:7px 0 0}
      .version-card{grid-column:2}
      .record-strip{grid-template-columns:1fr}
      .guide-grid{grid-template-columns:1fr}
      .cta{display:block;padding:32px 25px}
      .cta h2{font-size:25px}
      .cta .btn{margin-top:22px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
      .footer-grid>div:first-child{grid-column:1 / -1}
      .footer-grid>div:last-child{display:flex}
      .footer-bottom{display:block;margin-top:35px;line-height:2}
      .footer-bottom span{display:block}
    }
    @media(max-width:520px){
      .hero-actions{display:grid;grid-template-columns:1fr}
      .hero-actions .btn{width:100%}
      .version-top{align-items:flex-start;flex-direction:column}
      .version-card{padding:19px}
      .guide-card{padding:19px;gap:13px}
      .quick-grid{grid-template-columns:1fr 1fr}
      .quick-item{min-height:102px;padding:18px 15px}
      .quick-item strong{font-size:15px}
      .quick-item strong b{font-size:18px}
    }

/* roulang page: category5 */
:root{
      --coral:#f06445;
      --coral-deep:#d94d32;
      --coral-pale:#fff0eb;
      --lime:#9dca45;
      --lime-pale:#f1f8df;
      --ink:#252422;
      --ink-soft:#494743;
      --muted:#77736d;
      --paper:#fffdf9;
      --warm:#f5f1ea;
      --sand:#e8e0d5;
      --line:#ded6cb;
      --white:#fff;
      --radius-sm:10px;
      --radius-md:18px;
      --radius-lg:28px;
      --shadow:0 16px 36px rgba(42,35,28,.09);
      --shadow-soft:0 8px 22px rgba(42,35,28,.07);
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none}
    a:hover{color:inherit}
    img{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,253,249,.97);border-bottom:1px solid var(--line)}
    .nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:inline-flex;align-items:center;gap:10px;min-width:230px;font-weight:800;font-size:17px;letter-spacing:-.4px}
    .brand-mark{width:37px;height:37px;display:grid;place-items:center;border-radius:12px;background:var(--coral);color:#fff;box-shadow:4px 4px 0 var(--ink);flex:0 0 auto}
    .brand-mark svg{width:22px;height:22px}
    .nav{display:flex;align-items:center;justify-content:center;gap:3px;flex:1}
    .nav a{position:relative;padding:11px 12px;color:var(--ink-soft);font-size:14px;font-weight:700;white-space:nowrap;transition:.2s ease}
    .nav a:after{content:"";position:absolute;height:3px;left:12px;right:12px;bottom:4px;background:var(--coral);transform:scaleX(0);transform-origin:left;transition:.2s ease}
    .nav a:hover,.nav a.active{color:var(--ink)}
    .nav a:hover:after,.nav a.active:after{transform:scaleX(1)}
    .btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 19px;border:1px solid transparent;border-radius:999px;font-weight:800;font-size:14px;transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease}
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,.nav a:focus-visible,.faq-question:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid rgba(240,100,69,.35);outline-offset:3px}
    .btn-primary{background:var(--coral);color:#fff;box-shadow:0 8px 18px rgba(240,100,69,.25)}
    .btn-primary:hover{background:var(--coral-deep);box-shadow:0 12px 24px rgba(240,100,69,.31)}
    .btn-dark{background:var(--ink);color:#fff}
    .btn-dark:hover{background:#403d39}
    .btn-light{background:#fff;color:var(--ink);border-color:var(--line)}
    .btn-light:hover{border-color:var(--ink);box-shadow:var(--shadow-soft)}
    .nav-download{white-space:nowrap}
    .menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
    .topline{background:var(--ink);color:#fff;padding:9px 0;font-size:13px}
    .topline-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
    .topline strong{color:#dff0b5}
    .topline a{color:#dceeb4;text-decoration:underline;text-underline-offset:3px}
    .hero-help{position:relative;overflow:hidden;background:var(--ink);color:#fff;padding:76px 0 82px}
    .hero-help:before{content:"";position:absolute;right:-120px;top:-170px;width:490px;height:490px;border:1px solid rgba(255,255,255,.16);border-radius:50%;box-shadow:0 0 0 42px rgba(255,255,255,.035),0 0 0 84px rgba(255,255,255,.025)}
    .hero-help:after{content:"";position:absolute;left:-45px;bottom:-88px;width:330px;height:150px;background:var(--coral);transform:rotate(-8deg)}
    .hero-help-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr 390px;gap:70px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 11px;border:1px solid rgba(255,255,255,.22);border-radius:999px;color:#e9e1d6;font-size:12px;font-weight:700;letter-spacing:.3px}
    .eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--lime);display:inline-block}
    .hero-help h1{max-width:720px;margin:18px 0 18px;font-size:clamp(38px,5vw,62px);line-height:1.16;letter-spacing:-2.5px}
    .hero-help h1 em{font-style:normal;color:#ff9a82}
    .hero-copy{max-width:650px;margin:0;color:#d9d3ca;font-size:17px;line-height:1.9}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:29px}
    .hero-actions .btn-light{background:#fff;color:var(--ink)}
    .help-orbit{position:relative;min-height:290px;display:grid;place-items:center}
    .help-orbit-ring{width:260px;height:260px;border:1px solid rgba(255,255,255,.2);border-radius:50%;display:grid;place-items:center;transform:rotate(-13deg)}
    .help-orbit-ring:before{content:"";position:absolute;width:176px;height:176px;border:1px dashed rgba(157,202,69,.7);border-radius:50%}
    .help-symbol{position:relative;width:126px;height:126px;border-radius:34px;background:var(--coral);display:grid;place-items:center;box-shadow:12px 12px 0 var(--lime);transform:rotate(13deg)}
    .help-symbol svg{width:62px;height:62px}
    .orbit-label{position:absolute;padding:7px 12px;border-radius:999px;background:#fff;color:var(--ink);font-size:12px;font-weight:800;box-shadow:var(--shadow-soft)}
    .orbit-label.one{top:18px;right:15px}
    .orbit-label.two{bottom:28px;left:0;background:var(--lime-pale)}
    .orbit-label.three{top:112px;left:-26px;background:var(--coral-pale)}
    .section{padding:88px 0}
    .section-warm{background:var(--warm)}
    .section-dark{background:var(--ink);color:#fff}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:30px}
    .kicker{display:block;color:var(--coral-deep);font-size:12px;font-weight:900;letter-spacing:1.3px;text-transform:uppercase;margin-bottom:7px}
    .section-dark .kicker{color:var(--lime)}
    .section-title{margin:0;font-size:clamp(27px,3vw,38px);line-height:1.25;letter-spacing:-1px}
    .section-desc{max-width:500px;margin:0;color:var(--muted);font-size:15px}
    .section-dark .section-desc{color:#cac3ba}
    .search-panel{margin-top:-34px;position:relative;z-index:3;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:var(--shadow);padding:22px}
    .search-row{display:flex;gap:12px}
    .search-input{height:54px;flex:1;border:1px solid var(--line);border-radius:12px;background:#fffdf9;padding:0 18px;color:var(--ink)}
    .search-input::placeholder{color:#9a948b}
    .search-input:focus{border-color:var(--coral);box-shadow:0 0 0 4px var(--coral-pale)}
    .topic-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px}
    .topic-card{display:flex;gap:17px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:24px;min-height:154px;transition:.22s ease}
    .topic-card:hover{transform:translateY(-4px);border-color:var(--coral);box-shadow:var(--shadow-soft)}
    .topic-card:first-child{background:var(--coral);color:#fff;border-color:var(--coral)}
    .topic-icon{width:44px;height:44px;display:grid;place-items:center;border-radius:13px;background:var(--coral-pale);color:var(--coral);flex:0 0 auto}
    .topic-card:first-child .topic-icon{background:rgba(255,255,255,.18);color:#fff}
    .topic-icon svg{width:23px;height:23px}
    .topic-card h3{font-size:19px;margin:0 0 5px;line-height:1.35}
    .topic-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
    .topic-card:first-child p{color:#ffe4dc}
    .topic-link{display:inline-flex;margin-top:13px;font-size:13px;font-weight:800;color:var(--coral-deep)}
    .topic-card:first-child .topic-link{color:#fff}
    .faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:70px;align-items:start}
    .faq-intro{position:sticky;top:110px}
    .faq-intro p{color:var(--muted);font-size:15px;margin:17px 0 22px}
    .faq-note{display:flex;align-items:center;gap:10px;padding:13px 15px;border-left:4px solid var(--lime);background:var(--lime-pale);font-size:13px;color:var(--ink-soft);border-radius:0 10px 10px 0}
    .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;border:0;background:transparent;text-align:left;padding:21px 0;color:var(--ink);font-weight:800;font-size:17px}
    .faq-question span:last-child{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--coral-pale);color:var(--coral);font-size:20px;line-height:1;transition:.2s ease}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg);background:var(--coral);color:#fff}
    .faq-answer{display:none;padding:0 45px 20px 0;color:var(--muted);font-size:15px;line-height:1.85}
    .faq-item.open .faq-answer{display:block}
    .feedback-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:start}
    .feedback-copy p{color:#cac3ba;margin:16px 0 24px;line-height:1.9}
    .feedback-points{display:grid;gap:11px}
    .feedback-point{display:flex;gap:11px;align-items:center;color:#eee6dc;font-size:14px}
    .feedback-point b{width:23px;height:23px;display:grid;place-items:center;border-radius:50%;background:var(--lime);color:var(--ink);font-size:12px}
    .feedback-form{background:#fff;border-radius:var(--radius-lg);padding:27px;color:var(--ink);box-shadow:var(--shadow)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}
    .form-field{display:flex;flex-direction:column;gap:7px}
    .form-field.full{grid-column:1/-1}
    .form-field label{font-size:13px;font-weight:800;color:var(--ink-soft)}
    .form-field input,.form-field select,.form-field textarea{width:100%;border:1px solid var(--line);border-radius:10px;background:#fffdf9;padding:11px 13px;color:var(--ink);min-height:46px}
    .form-field textarea{min-height:120px;resize:vertical}
    .form-field input:focus,.form-field select:focus,.form-field textarea:focus{border-color:var(--coral);box-shadow:0 0 0 4px var(--coral-pale);outline:0}
    .form-foot{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-top:19px}
    .form-hint{color:var(--muted);font-size:12px}
    .cta-band{padding:70px 0;background:var(--coral);color:#fff}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}
    .cta-band h2{margin:0 0 8px;font-size:clamp(26px,3vw,38px);line-height:1.25}
    .cta-band p{margin:0;color:#ffe2da;font-size:15px}
    .cta-actions{display:flex;gap:11px;flex-wrap:wrap}
    .cta-band .btn-dark{box-shadow:0 8px 18px rgba(37,36,34,.18)}
    .site-footer{background:#1e1d1b;color:#fff;padding:58px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.35fr .8fr .8fr .9fr;gap:38px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.14)}
    .footer-brand{color:#fff;margin-bottom:15px}
    .footer-brand-mark{box-shadow:4px 4px 0 var(--lime)}
    .footer-intro{max-width:330px;margin:0;color:#aaa39b;font-size:13px;line-height:1.8}
    .footer-col{display:flex;flex-direction:column;gap:8px}
    .footer-col h3{margin:0 0 8px;color:#fff;font-size:14px}
    .footer-col a{color:#aaa39b;font-size:13px;transition:.2s ease}
    .footer-col a:hover{color:#ff9a82;transform:translateX(2px)}
    .footer-bottom{display:flex;justify-content:space-between;gap:18px;padding-top:20px;color:#8e8982;font-size:12px}
    @media(max-width:1024px){
      .nav-wrap{gap:12px}
      .brand{min-width:205px}
      .nav a{padding-left:8px;padding-right:8px}
      .nav a:after{left:8px;right:8px}
      .hero-help-grid{grid-template-columns:1fr 330px;gap:35px}
      .topic-grid{grid-template-columns:1fr 1fr}
      .topic-card:first-child{grid-column:1/-1}
      .faq-layout{gap:38px}
    }
    @media(max-width:767px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .topline{font-size:12px}
      .topline-inner{align-items:flex-start}
      .topline-inner span{max-width:245px;line-height:1.5}
      .topline-inner a{white-space:nowrap}
      .nav-wrap{height:68px}
      .brand{min-width:0;font-size:15px}
      .brand-mark{width:34px;height:34px;border-radius:10px}
      .nav-download{display:none}
      .menu-toggle{display:grid;place-items:center}
      .menu-toggle svg{width:21px;height:21px}
      .nav{position:absolute;display:none;left:16px;right:16px;top:75px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}
      .nav.show{display:flex}
      .nav a{padding:13px 14px;border-bottom:1px solid var(--line)}
      .nav a:last-child{border-bottom:0}
      .nav a:after{display:none}
      .hero-help{padding:55px 0 62px}
      .hero-help-grid{display:flex;flex-direction:column;align-items:stretch;gap:25px}
      .hero-help h1{font-size:clamp(34px,10vw,44px);letter-spacing:-1.7px}
      .hero-copy{font-size:15px;line-height:1.8}
      .hero-actions{margin-top:22px}
      .hero-actions .btn{flex:1;min-width:145px}
      .help-orbit{min-height:220px}
      .help-orbit-ring{width:190px;height:190px}
      .help-symbol{width:94px;height:94px;border-radius:25px;box-shadow:8px 8px 0 var(--lime)}
      .help-symbol svg{width:47px;height:47px}
      .orbit-label.one{top:7px;right:12px}
      .orbit-label.two{bottom:8px;left:25px}
      .orbit-label.three{top:85px;left:12px}
      .search-panel{margin-top:-24px;padding:15px}
      .search-row{display:flex;flex-direction:column}
      .search-row .btn{width:100%}
      .section{padding:62px 0}
      .section-head{display:block;margin-bottom:23px}
      .section-desc{margin-top:12px}
      .topic-grid{display:flex;overflow-x:auto;gap:12px;padding-bottom:8px;scroll-snap-type:x proximity}
      .topic-card,.topic-card:first-child{min-width:272px;min-height:178px;scroll-snap-align:start}
      .faq-layout,.feedback-grid{display:block}
      .faq-intro{position:static;margin-bottom:28px}
      .faq-question{font-size:15px;padding:18px 0}
      .faq-answer{font-size:14px;padding-right:30px}
      .feedback-copy{margin-bottom:28px}
      .form-grid{grid-template-columns:1fr}
      .form-field.full{grid-column:auto}
      .form-foot{align-items:flex-start;flex-direction:column}
      .form-foot .btn{width:100%}
      .cta-band{padding:52px 0}
      .cta-inner{display:block}
      .cta-actions{margin-top:22px}
      .cta-actions .btn{width:100%}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px 22px}
      .footer-grid>div:first-child{grid-column:1/-1}
      .footer-bottom{display:block;line-height:1.8}
      .footer-bottom span{display:block}
      .footer-bottom span+span{margin-top:5px}
    }
    @media(max-width:520px){
      .topline-inner a{font-size:11px}
      .brand span:last-child{max-width:185px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
      .hero-help h1{font-size:34px}
      .hero-actions{display:grid}
      .hero-actions .btn{width:100%}
      .help-orbit{transform:scale(.9);margin:-8px 0}
      .feedback-form{padding:20px}
      .footer-grid{grid-template-columns:1fr}
      .footer-grid>div:first-child{grid-column:auto}
    }

/* roulang page: category3 */
:root{
      --coral:#f06445;
      --coral-deep:#d94d32;
      --coral-pale:#fff0eb;
      --lime:#9dca45;
      --lime-pale:#f1f8df;
      --ink:#252422;
      --ink-soft:#494743;
      --muted:#77736d;
      --paper:#fffdf9;
      --warm:#f5f1ea;
      --sand:#e8e0d5;
      --line:#ded6cb;
      --white:#ffffff;
      --radius-sm:10px;
      --radius-md:18px;
      --radius-lg:28px;
      --shadow:0 16px 36px rgba(42,35,28,.09);
      --shadow-soft:0 8px 22px rgba(42,35,28,.07);
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none}
    a:hover{color:inherit}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    img{max-width:100%;display:block}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,253,249,.97);border-bottom:1px solid var(--line)}
    .nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:inline-flex;align-items:center;gap:10px;min-width:230px;font-weight:800;font-size:17px;letter-spacing:-.4px}
    .brand-mark{width:37px;height:37px;display:grid;place-items:center;border-radius:12px;background:var(--coral);color:#fff;box-shadow:4px 4px 0 var(--ink);flex:none}
    .brand-mark svg{width:22px;height:22px}
    .nav{display:flex;align-items:center;justify-content:center;gap:3px;flex:1}
    .nav a{position:relative;padding:11px 12px;color:var(--ink-soft);font-size:14px;font-weight:700;white-space:nowrap;transition:.2s ease}
    .nav a:after{content:"";position:absolute;height:3px;left:12px;right:12px;bottom:4px;background:var(--coral);transform:scaleX(0);transform-origin:left;transition:.2s ease}
    .nav a:hover,.nav a.active{color:var(--ink)}
    .nav a:hover:after,.nav a.active:after{transform:scaleX(1)}
    .btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 19px;border:1px solid transparent;border-radius:999px;font-weight:800;font-size:14px;transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease}
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,.nav a:focus-visible,.faq-question:focus-visible{outline:3px solid rgba(240,100,69,.35);outline-offset:3px}
    .btn-primary{background:var(--coral);color:#fff;box-shadow:0 8px 18px rgba(240,100,69,.25)}
    .btn-primary:hover{background:var(--coral-deep);color:#fff;box-shadow:0 12px 24px rgba(240,100,69,.31)}
    .btn-dark{background:var(--ink);color:#fff}
    .btn-dark:hover{background:#403d39;color:#fff}
    .btn-light{background:#fff;color:var(--ink);border-color:var(--line)}
    .btn-light:hover{border-color:var(--ink);box-shadow:var(--shadow-soft)}
    .nav-download{white-space:nowrap}
    .menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
    .topline{background:var(--ink);color:#eee7dd;font-size:13px}
    .topline-inner{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:15px}
    .topline strong{color:#dff0b5;margin-right:8px}
    .topline a{color:#ffd1c5;text-decoration:underline;text-underline-offset:3px}
    .page-hero{background:var(--warm);padding:72px 0 66px;position:relative;overflow:hidden}
    .page-hero:after{content:"03";position:absolute;right:7%;top:20px;color:rgba(240,100,69,.1);font-size:190px;line-height:1;font-weight:900;letter-spacing:-12px}
    .hero-layout{position:relative;z-index:1;display:grid;grid-template-columns:1fr 440px;gap:70px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 11px;border-radius:999px;background:var(--lime-pale);color:#52721c;font-size:12px;font-weight:800;letter-spacing:.3px}
    .eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--lime);display:inline-block}
    .page-hero h1{max-width:720px;margin:18px 0 18px;font-size:clamp(38px,5vw,62px);line-height:1.16;letter-spacing:-2.5px}
    .page-hero h1 span{color:var(--coral)}
    .hero-desc{max-width:650px;color:var(--ink-soft);font-size:17px;line-height:1.9;margin:0}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
    .crumbs{margin-top:25px;color:var(--muted);font-size:13px}
    .crumbs a{text-decoration:underline;text-underline-offset:3px}
    .guide-index{background:var(--ink);color:#fff;border-radius:var(--radius-lg);padding:27px;box-shadow:12px 12px 0 var(--coral)}
    .guide-index h2{font-size:19px;margin:0 0 17px}
    .guide-index ol{list-style:none;margin:0;padding:0}
    .guide-index li{display:flex;gap:14px;align-items:flex-start;padding:14px 0;border-top:1px solid rgba(255,255,255,.15)}
    .guide-index li:first-child{border-top:0}
    .step-no{width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:var(--coral);font-size:12px;font-weight:900;flex:none}
    .guide-index strong{display:block;font-size:15px}
    .guide-index small{display:block;margin-top:2px;color:#c9c2b8;font-size:12px}
    .section{padding:88px 0}
    .section-warm{background:var(--warm)}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:34px}
    .section-kicker{color:var(--coral);font-size:12px;font-weight:900;letter-spacing:1.5px;text-transform:uppercase}
    .section h2{margin:7px 0 0;font-size:clamp(27px,3vw,38px);line-height:1.25;letter-spacing:-1px}
    .section-head p{max-width:470px;margin:0;color:var(--muted);font-size:14px}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step-card{position:relative;background:#fff;border:1px solid var(--line);padding:24px 21px;min-height:220px;transition:.2s ease}
    .step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-soft);border-color:#f3aa98}
    .step-card:nth-child(2){margin-top:24px}
    .step-card:nth-child(3){margin-top:48px}
    .step-card:nth-child(4){margin-top:72px}
    .step-card .number{font-size:42px;line-height:1;color:var(--coral);font-weight:900;letter-spacing:-2px}
    .step-card h3{margin:25px 0 8px;font-size:19px}
    .step-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.75}
    .operation-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:20px;align-items:stretch}
    .operation-panel{background:var(--ink);border-radius:var(--radius-md);padding:34px;color:#fff;min-height:390px}
    .operation-panel h3{font-size:25px;margin:0 0 13px}
    .operation-panel p{color:#c9c2b8;margin:0 0 26px;max-width:550px}
    .operation-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .operation-list a{display:flex;align-items:center;gap:10px;padding:14px;border:1px solid rgba(255,255,255,.16);border-radius:12px;color:#f6efe5;transition:.2s ease}
    .operation-list a:hover{background:var(--coral);border-color:var(--coral);transform:translateX(3px)}
    .operation-list b{width:25px;height:25px;border-radius:8px;background:var(--lime);color:#354811;display:grid;place-items:center;font-size:12px}
    .device-panel{background:var(--coral-pale);border-radius:var(--radius-md);padding:30px;display:flex;align-items:center;justify-content:center}
    .device{width:210px;background:#171716;border:7px solid #171716;border-radius:30px;padding:10px;box-shadow:10px 12px 0 rgba(240,100,69,.25)}
    .device-top{height:18px;width:68px;border-radius:0 0 12px 12px;background:#171716;margin:-10px auto 7px}
    .device-screen{background:#fffaf4;border-radius:18px;overflow:hidden}
    .device-screen header{padding:13px 12px 11px;background:var(--coral);color:#fff;font-size:11px;font-weight:800}
    .device-screen .screen-body{padding:12px}
    .screen-line{height:9px;border-radius:8px;background:#ded8cf;margin-bottom:8px}
    .screen-line.short{width:62%}
    .screen-card{height:54px;border-radius:10px;background:var(--lime-pale);border-left:4px solid var(--lime);margin:13px 0}
    .screen-nav{height:32px;border-top:1px solid var(--sand);display:flex;justify-content:space-around;align-items:end;padding-bottom:5px;color:var(--coral);font-size:10px}
    .guide-note{background:#fff;border:1px solid var(--line);border-left:5px solid var(--lime);border-radius:var(--radius-md);padding:25px 27px;display:flex;gap:18px;align-items:flex-start}
    .guide-note .note-icon{width:40px;height:40px;display:grid;place-items:center;border-radius:12px;background:var(--lime-pale);color:#587a1d;font-weight:900;flex:none}
    .guide-note h3{margin:0 0 4px;font-size:18px}
    .guide-note p{margin:0;color:var(--muted);font-size:14px}
    .faq-list{max-width:900px;margin:0 auto;border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left;border:0;background:transparent;padding:21px 4px;color:var(--ink);font-weight:800;font-size:17px}
    .faq-question span:last-child{font-size:23px;color:var(--coral);font-weight:400;transition:.2s ease}
    .faq-answer{display:none;padding:0 45px 21px 4px;color:var(--muted);font-size:14px;line-height:1.85}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta{padding:60px 0;background:var(--coral);color:#fff}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}
    .cta h2{margin:0 0 7px;font-size:32px;letter-spacing:-1px}
    .cta p{margin:0;color:#ffe4dc;font-size:15px}
    .cta .btn-light{border:0}
    .site-footer{background:var(--ink);color:#fff;padding:58px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.6fr .8fr .8fr .8fr;gap:40px}
    .footer-brand{color:#fff;margin-bottom:16px}
    .footer-intro{max-width:360px;margin:0;color:#bcb5ac;font-size:13px;line-height:1.8}
    .footer-col{display:flex;flex-direction:column;gap:9px}
    .footer-col h3{margin:0 0 7px;color:#fff;font-size:14px}
    .footer-col a{color:#bcb5ac;font-size:13px;transition:.2s ease}
    .footer-col a:hover{color:#ff9a82;transform:translateX(2px)}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.14);margin-top:42px;padding-top:18px;color:#918a82;font-size:12px}
    @media(max-width:1024px){
      .nav-wrap{gap:12px}
      .brand{min-width:205px;font-size:15px}
      .nav a{padding-left:8px;padding-right:8px;font-size:13px}
      .nav a:after{left:8px;right:8px}
      .hero-layout{grid-template-columns:1fr 390px;gap:35px}
      .steps{grid-template-columns:repeat(2,1fr)}
      .step-card:nth-child(n){margin-top:0}
    }
    @media(max-width:767px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .topline-inner{min-height:34px;font-size:11px}
      .topline-inner a{display:none}
      .nav-wrap{height:68px}
      .brand{min-width:0;font-size:14px}
      .brand-mark{width:34px;height:34px}
      .nav{display:none;position:absolute;left:16px;right:16px;top:76px;flex-direction:column;align-items:stretch;gap:0;background:#fff;border:1px solid var(--line);border-radius:16px;padding:8px;box-shadow:var(--shadow)}
      .nav.open{display:flex}
      .nav a{padding:12px 14px;border-radius:9px}
      .nav a:after{display:none}
      .nav a:hover,.nav a.active{background:var(--coral-pale)}
      .nav-download{display:none}
      .menu-toggle{display:grid;place-items:center}
      .page-hero{padding:52px 0 50px}
      .page-hero:after{font-size:120px;right:-5px;top:22px}
      .hero-layout{display:block}
      .page-hero h1{font-size:39px;letter-spacing:-1.8px}
      .hero-desc{font-size:15px;line-height:1.8}
      .hero-actions .btn{width:100%}
      .guide-index{margin:38px 7px 0;padding:23px;box-shadow:7px 8px 0 var(--coral)}
      .section{padding:62px 0}
      .section-head{display:block;margin-bottom:25px}
      .section-head p{margin-top:12px}
      .steps{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px}
      .step-card{min-width:78%;scroll-snap-align:start}
      .operation-grid{display:flex;flex-direction:column}
      .operation-panel{padding:26px 22px;min-height:auto}
      .operation-panel h3{font-size:22px}
      .operation-list{grid-template-columns:1fr}
      .device-panel{min-height:330px}
      .guide-note{padding:21px}
      .cta-inner{display:block}
      .cta h2{font-size:27px}
      .cta .btn{margin-top:22px;width:100%}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px 18px}
      .footer-grid>div:first-child{grid-column:1/-1}
      .footer-bottom{display:block;line-height:2}
      .footer-bottom span{display:block}
    }
    @media(max-width:520px){
      .brand span:last-child{max-width:180px;white-space:normal;line-height:1.25}
      .hero-actions{display:block}
      .hero-actions .btn{margin-bottom:10px}
      .faq-question{font-size:15px;padding:18px 0}
      .faq-answer{padding:0 35px 18px 0}
      .footer-grid{grid-template-columns:1fr}
      .footer-grid>div:first-child{grid-column:auto}
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}