/* roulang page: index */
:root{
  --bg:#f5f7f7;--paper:#fff;--ink:#26353d;--muted:#6e7d82;--blue:#527586;
  --blue-dark:#385b6b;--blue-soft:#e6eff1;--sand:#eee9df;--sage:#e4ebe6;
  --line:#d9e1e1;--shadow:0 16px 42px rgba(46,70,78,.09);--shadow-sm:0 8px 24px rgba(46,70,78,.07);
  --r-lg:24px;--r-md:16px;--r-sm:11px;--max:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.72;font-size:16px}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer;border:0}
img{max-width:100%;display:block}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.site-header{height:82px;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;transition:.25s}
.navbar{height:100%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:25px}
.nav-side{display:flex;align-items:center;gap:26px}
.nav-side.right{justify-content:flex-end}
.nav-link{font-size:14px;color:#607177;position:relative;padding:8px 0;transition:.2s}
.nav-link:after{content:"";position:absolute;left:0;right:100%;bottom:1px;height:2px;background:var(--blue);transition:.2s}
.nav-link:hover,.nav-link.active{color:var(--blue-dark)}
.nav-link:hover:after,.nav-link.active:after{right:0}
.brand{display:flex;align-items:center;gap:10px;color:var(--blue-dark);font-size:17px;font-weight:750;letter-spacing:-.03em;white-space:nowrap}
.brand-mark{width:30px;height:30px;border:2px solid var(--blue);border-radius:9px;display:grid;place-items:center;position:relative}
.brand-mark:before{content:"";width:0;height:0;border-top:6px solid transparent;border-bottom:6px solid transparent;border-left:9px solid var(--blue);margin-left:3px}
.menu-toggle{display:none;background:transparent;color:var(--blue-dark);font-size:24px;padding:8px}
.hero{padding:92px 0 72px;position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;inset:0;opacity:.45;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:54px 54px;mask-image:linear-gradient(to right,black,transparent 75%);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1.02fr .98fr;gap:70px;align-items:center}
.eyebrow,.section-kicker{color:var(--blue);font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-weight:750}
h1,h2,h3{line-height:1.2;letter-spacing:-.045em;color:var(--ink)}
h1{font-size:clamp(38px,5vw,62px);max-width:680px;margin:18px 0 24px}
h2{font-size:clamp(29px,3.5vw,42px);margin:10px 0 16px}
h3{font-size:20px}
.lead{font-size:17px;color:var(--muted);max-width:600px}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0 17px}
.btn{min-height:46px;padding:11px 19px;border-radius:var(--r-sm);display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:14px;border:1px solid transparent;transition:.2s}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(82,117,134,.2)}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(82,117,134,.25)}
.btn-secondary{background:var(--paper);border-color:#b9cbd0;color:var(--blue-dark)}
.btn-secondary:hover{border-color:var(--blue);background:var(--blue-soft)}
.btn:active{transform:translateY(1px)}
.btn:focus-visible,.nav-link:focus-visible,summary:focus-visible,.menu-toggle:focus-visible,input:focus-visible{outline:3px solid rgba(82,117,134,.32);outline-offset:3px}
.notice{font-size:12px;color:var(--muted)}
.hero-board{min-height:390px;background:#dfe9ea;border:1px solid #cbd9da;border-radius:var(--r-lg);padding:20px;box-shadow:var(--shadow);display:grid;grid-template-columns:1.35fr .65fr;grid-template-rows:1fr 112px;gap:14px;transform:rotate(1deg)}
.visual-card{border-radius:17px;position:relative;overflow:hidden;padding:20px;background:var(--blue-dark);color:#fff}
.visual-card.main{grid-row:span 2;background:linear-gradient(145deg,#688b98,#385b6b)}
.visual-card.main:after{content:"";position:absolute;width:220px;height:220px;border:1px solid rgba(255,255,255,.25);border-radius:50%;right:-55px;bottom:-65px;box-shadow:0 0 0 22px rgba(255,255,255,.06),0 0 0 44px rgba(255,255,255,.04)}
.visual-card small{opacity:.78;font-size:11px;letter-spacing:.12em}
.visual-card strong{display:block;font-size:25px;line-height:1.3;margin-top:14px;max-width:210px}
.visual-card .line{height:4px;background:rgba(255,255,255,.45);border-radius:5px;margin-top:42px;width:72%}
.visual-card.light{background:#f9fbfa;color:var(--ink);border:1px solid #d7e1df}
.visual-card.sand{background:var(--sand);color:var(--ink)}
.board-meta{grid-column:1/-1;background:#fff;border-radius:13px;padding:12px 16px;display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:12px}
.board-meta b{color:var(--blue-dark)}
.stats{display:flex;gap:28px;margin-top:30px;padding-top:22px;border-top:1px solid var(--line)}
.stat b{display:block;font-size:17px;color:var(--blue-dark)}
.stat span{font-size:12px;color:var(--muted)}
.section{padding:96px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px}
.section-head p{max-width:530px;color:var(--muted);font-size:15px}
.feature-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:18px}
.feature-card{min-height:235px;padding:27px;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--paper);box-shadow:var(--shadow-sm);transition:.25s;position:relative;overflow:hidden}
.feature-card:first-child{background:var(--blue);color:#fff}
.feature-card:first-child h3,.feature-card:first-child p{color:#fff}
.feature-card:hover,.route-card:hover,.quote:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.feature-card h3{margin:28px 0 10px}
.feature-card p{color:var(--muted);font-size:14px}
.feature-card:first-child p{color:#e8f0f1}
.badge{display:inline-flex;padding:5px 9px;border-radius:999px;background:var(--blue-soft);color:var(--blue-dark);font-size:11px;font-weight:700}
.feature-card:first-child .badge{background:rgba(255,255,255,.17);color:#fff}
.arrow-link{position:absolute;bottom:23px;right:25px;color:var(--blue-dark);font-weight:700;font-size:14px}
.feature-card:first-child .arrow-link{color:#fff}
.scene{background:#edf2f1}
.scene-grid{display:grid;grid-template-columns:.7fr 1.3fr;gap:55px;align-items:center}
.scene-list{list-style:none;border-left:1px solid #b8c8c9}
.scene-list li{padding:17px 0 17px 22px;color:var(--muted);position:relative}
.scene-list li.active{color:var(--blue-dark);font-weight:700}
.scene-list li.active:before{content:"";position:absolute;left:-2px;top:0;bottom:0;width:3px;background:var(--blue)}
.scene-canvas{min-height:330px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:25px;display:grid;grid-template-columns:1fr 1fr;gap:15px;box-shadow:var(--shadow-sm)}
.canvas-large{grid-row:span 2;background:var(--sand);border-radius:16px;padding:22px;display:flex;flex-direction:column;justify-content:end}
.canvas-large b{font-size:23px;max-width:230px}
.canvas-small{border-radius:16px;background:var(--blue-soft);padding:18px;display:flex;align-items:end;color:var(--blue-dark);font-weight:700}
.canvas-small:last-child{background:var(--sage)}
.route-strip{margin-top:30px;padding:18px 21px;background:#dcebef;border:1px solid #c4d9dc;border-radius:14px;display:flex;justify-content:space-between;align-items:center;gap:18px;font-size:14px;color:var(--blue-dark)}
.masonry{display:grid;grid-template-columns:1.35fr .75fr .75fr;grid-template-rows:auto auto;gap:18px}
.quote{grid-row:span 2;background:var(--paper);padding:34px;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-sm);transition:.25s}
.quote blockquote{font-size:25px;line-height:1.5;margin:28px 0;color:var(--blue-dark)}
.quote cite{font-style:normal;color:var(--muted);font-size:13px}
.mini-note{background:var(--sand);padding:23px;border-radius:var(--r-md);border:1px solid #dfd9cb}
.mini-note.blue{background:var(--blue-soft)}
.mini-note b{display:block;margin:10px 0 5px}
.mini-note p{font-size:13px;color:var(--muted)}
.plans{background:#f0f3f2}
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:start}
.plan{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:29px;box-shadow:var(--shadow-sm)}
.plan.recommended{background:var(--blue);color:#fff;margin-top:-14px;box-shadow:var(--shadow)}
.plan h3{margin:17px 0 8px}.plan.recommended h3{color:#fff}
.price{font-size:29px;font-weight:800;color:var(--blue-dark);margin:19px 0}.recommended .price{color:#fff}
.plan ul{list-style:none;margin:18px 0 24px}.plan li{padding:8px 0;border-bottom:1px solid var(--line);font-size:14px}
.recommended li{border-color:rgba(255,255,255,.2)}
.plan li:before{content:"✓";color:var(--blue);font-weight:bold;margin-right:8px}.recommended li:before{color:#d8e8e8}
.plan .btn{width:100%}
.faq-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:65px}
.faq-intro p{color:var(--muted);font-size:15px}
.faq-list details{border-bottom:1px solid var(--line);padding:18px 0}
.faq-list summary{list-style:none;cursor:pointer;font-weight:700;display:flex;justify-content:space-between;gap:20px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:after{content:"+";color:var(--blue);font-size:23px;font-weight:400}
.faq-list details[open] summary:after{content:"−"}
.faq-list details[open]{border-left:3px solid var(--blue);padding-left:17px;background:var(--blue-soft)}
.faq-list p{color:var(--muted);font-size:14px;margin-top:12px}
.final-cta{text-align:center;padding:105px 20px;background:var(--paper);border-top:1px solid var(--line)}
.final-cta p{max-width:570px;margin:0 auto;color:var(--muted)}
.final-cta .actions{justify-content:center}
.site-footer{background:#263b44;color:#d8e2e3;padding:62px 0 25px}
.footer-grid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:35px}
.footer-brand{color:#fff;margin-bottom:15px}
.site-footer h3{color:#fff;font-size:15px;margin-bottom:15px}
.site-footer p,.site-footer a{color:#aebfc2;font-size:13px}
.site-footer a{display:block;margin:8px 0;transition:.2s}.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:42px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;font-size:12px;color:#9db0b3}
.compliance{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);width:min(760px,calc(100% - 32px));background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:15px;padding:14px 17px;display:flex;align-items:center;gap:18px;z-index:30;font-size:12px;color:var(--muted)}
.compliance strong{color:var(--ink)}.compliance .btn{min-height:38px;padding:8px 13px;margin-left:auto;white-space:nowrap}
@media(max-width:992px){
 .hero-grid{gap:35px}.feature-grid{grid-template-columns:1fr 1fr}.feature-card:first-child{grid-column:span 2}
 .masonry{grid-template-columns:1fr 1fr}.quote{grid-row:span 1;grid-column:span 2}
 .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
}
@media(max-width:768px){
 .site-header{height:68px}.navbar{display:flex;justify-content:space-between}.brand{font-size:15px}.nav-side{display:none}
 .menu-toggle{display:block}.navbar:before{content:"☰";font-size:22px;color:var(--blue-dark);visibility:hidden;width:28px}
 .hero{padding:65px 0 55px}.hero-grid,.scene-grid,.faq-grid{grid-template-columns:1fr}.hero-board{margin-top:15px;transform:none;min-height:350px}
 .section{padding:68px 0}.section-head{display:block}.section-head p{margin-top:12px}
 .plan-grid{grid-template-columns:1fr}.plan.recommended{margin-top:0}.route-strip{align-items:flex-start;flex-direction:column}
 .footer-grid{grid-template-columns:1fr 1fr}.compliance{align-items:flex-start}.compliance .btn{margin-top:2px}
}
@media(max-width:480px){
 .container{width:min(100% - 32px,var(--max))}h1{font-size:35px}.lead{font-size:15px}
 .actions,.actions .btn{width:100%}.stats{gap:13px;justify-content:space-between}.stat b{font-size:14px}
 .hero-board{padding:12px;grid-template-columns:1fr 1fr;grid-template-rows:1fr 92px}.visual-card{padding:14px}.visual-card strong{font-size:18px}
 .feature-grid,.masonry,.scene-canvas{grid-template-columns:1fr}.feature-card:first-child,.quote{grid-column:auto}.quote blockquote{font-size:20px}
 .canvas-large{min-height:180px;grid-row:auto}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:8px}
 .compliance{display:block}.compliance .btn{width:100%;margin-top:10px}
}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category2 */
:root{
 --bg:#f5f7f7;--paper:#fff;--ink:#26353d;--muted:#6e7d82;--blue:#527586;
 --blue-dark:#385b6b;--blue-soft:#e6eff1;--sand:#eee9df;--sage:#e4ebe6;
 --line:#d9e1e1;--shadow:0 16px 42px rgba(46,70,78,.09);--shadow-sm:0 8px 24px rgba(46,70,78,.07);
 --r-lg:24px;--r-md:16px;--r-sm:11px;--max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.72;font-size:16px}
h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.25;letter-spacing:-.035em}
h1{font-size:clamp(36px,5vw,56px);margin-bottom:22px}h2{font-size:clamp(28px,3.5vw,40px);margin-bottom:16px}h3{font-size:20px;margin-bottom:10px}
a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer;border:0}img{max-width:100%;display:block}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.site-header{height:82px;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;transition:.25s}
.navbar{height:100%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:25px}
.nav-side{display:flex;align-items:center;gap:26px}.nav-side.right{justify-content:flex-end}
.nav-link{font-size:14px;color:#607177;position:relative;padding:8px 0;transition:.2s}
.nav-link:after{content:"";position:absolute;left:0;right:100%;bottom:1px;height:2px;background:var(--blue);transition:.2s}
.nav-link:hover,.nav-link.active{color:var(--blue-dark)}.nav-link:hover:after,.nav-link.active:after{right:0}
.brand{display:flex;align-items:center;gap:10px;color:var(--blue-dark);font-size:17px;font-weight:750;letter-spacing:-.03em;white-space:nowrap}
.brand-mark{width:30px;height:30px;border:2px solid var(--blue);border-radius:9px;display:grid;place-items:center;position:relative}
.brand-mark:before{content:"";width:0;height:0;border-top:6px solid transparent;border-bottom:6px solid transparent;border-left:9px solid var(--blue);margin-left:3px}
.menu-toggle{display:none;background:transparent;color:var(--blue-dark);font-size:24px;padding:8px}
.hero{padding:92px 0 82px;position:relative;overflow:hidden;background:#f2f6f6}
.hero:before{content:"";position:absolute;inset:0;opacity:.42;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:54px 54px;mask-image:linear-gradient(to right,black,transparent 80%);pointer-events:none}
.hero-inner{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:center}
.eyebrow,.section-kicker{color:var(--blue);font-size:12px;letter-spacing:.16em;font-weight:750}
.lead{font-size:17px;color:var(--muted);max-width:650px}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:24px}.breadcrumb a{color:var(--blue-dark)}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 18px}
.btn{min-height:46px;padding:11px 19px;border-radius:var(--r-sm);display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:14px;border:1px solid transparent;transition:.2s}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(82,117,134,.2)}.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(82,117,134,.25)}
.btn-secondary{background:var(--paper);border-color:#b9cbd0;color:var(--blue-dark)}.btn-secondary:hover{border-color:var(--blue);background:var(--blue-soft)}
.btn:active{transform:translateY(1px)}.btn:focus-visible,.nav-link:focus-visible,summary:focus-visible,.menu-toggle:focus-visible{outline:3px solid rgba(82,117,134,.32);outline-offset:3px}
.compliance{font-size:12px;color:var(--muted)}
.hero-art{min-height:330px;border:1px solid #cbd9da;border-radius:var(--r-lg);background:#dfe9ea;padding:20px;box-shadow:var(--shadow);transform:rotate(1deg);position:relative}
.art-main{height:230px;border-radius:18px;background:linear-gradient(145deg,#7898a3,#385b6b);padding:24px;color:white;position:relative;overflow:hidden}
.art-main:after{content:"";position:absolute;width:240px;height:240px;border:1px solid rgba(255,255,255,.3);border-radius:50%;right:-60px;bottom:-90px;box-shadow:0 0 0 24px rgba(255,255,255,.06),0 0 0 48px rgba(255,255,255,.04)}
.art-main small{letter-spacing:.14em;opacity:.8}.art-main strong{display:block;font-size:26px;max-width:220px;line-height:1.3;margin-top:18px}.progress{height:4px;width:65%;background:rgba(255,255,255,.5);border-radius:5px;margin-top:38px}
.art-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}.art-note{background:white;border-radius:13px;padding:14px;font-size:12px;color:var(--muted);border:1px solid #d7e1df}.art-note b{display:block;color:var(--blue-dark);font-size:15px;margin-top:5px}
.section{padding:96px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px}.section-head p{max-width:540px;color:var(--muted);font-size:15px}
.index-layout{display:grid;grid-template-columns:250px 1fr;gap:42px;align-items:start}
.index-menu{position:sticky;top:112px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);padding:22px;box-shadow:var(--shadow-sm)}
.index-menu h3{font-size:16px;margin-bottom:15px}.index-menu a{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted);transition:.2s}.index-menu a:hover,.index-menu a.active{color:var(--blue-dark);padding-left:5px}.index-menu a span{color:var(--blue)}
.topic-stack{display:grid;gap:18px}.topic-module{display:grid;grid-template-columns:130px 1fr 220px;gap:24px;align-items:center;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:25px;box-shadow:var(--shadow-sm);transition:.25s}.topic-module:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#b8cbd0}
.topic-number{font-size:42px;color:#a5bcc2;font-weight:800;letter-spacing:-.08em}.topic-module p{color:var(--muted);font-size:14px;margin-bottom:13px}.tag-row{display:flex;gap:7px;flex-wrap:wrap}.badge{display:inline-flex;padding:5px 9px;border-radius:999px;background:var(--blue-soft);color:var(--blue-dark);font-size:11px;font-weight:700}
.topic-cover{height:125px;border-radius:14px;background:var(--blue-soft);position:relative;overflow:hidden;border:1px solid #d2e0e0}.topic-cover:before{content:"";position:absolute;width:180px;height:180px;border:1px solid rgba(82,117,134,.38);border-radius:50%;right:-55px;top:-55px}.topic-cover:after{content:"";position:absolute;left:18px;right:35px;bottom:25px;height:3px;background:var(--blue);box-shadow:0 -12px 0 rgba(82,117,134,.35),0 -24px 0 rgba(82,117,134,.2)}
.topic-cover.sand{background:var(--sand)}.topic-cover.sage{background:var(--sage)}
.timeline{background:#e9f0f0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.timeline-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}.step{padding:22px 25px 22px 0;border-right:1px solid #c8d7d8;margin-right:25px}.step:last-child{border-right:0}.step b{color:var(--blue);font-size:13px}.step h3{font-size:17px;margin:9px 0 7px}.step p{font-size:13px;color:var(--muted);margin:0}
.info-layout{display:grid;grid-template-columns:1fr 300px;gap:70px;align-items:start}.info-card{background:var(--sand);border:1px solid #ddd5c7;border-radius:var(--r-lg);padding:28px;box-shadow:var(--shadow-sm);position:sticky;top:112px}.info-card h3{font-size:19px}.info-card p,.info-card li{color:var(--muted);font-size:14px}.info-card ul{padding-left:18px}.note-line{border-top:1px solid #d6cec0;margin-top:18px;padding-top:16px;font-size:12px;color:var(--muted)}
.faq-list{max-width:780px}.faq-list details{border-bottom:1px solid var(--line);padding:18px 0}.faq-list summary{list-style:none;cursor:pointer;font-weight:700;display:flex;justify-content:space-between;gap:20px}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";color:var(--blue);font-size:22px;line-height:1}.faq-list details[open]{background:var(--blue-soft);border-left:3px solid var(--blue);padding:18px 20px}.faq-list details[open] summary:after{content:"−"}.faq-list details p{color:var(--muted);font-size:14px;margin:12px 0 0}
.recommend{padding:25px 0 105px}.recommend-grid{display:grid;grid-template-columns:1.15fr .9fr .9fr;gap:18px}.recommend-card{min-height:160px;border:1px solid var(--line);border-radius:var(--r-lg);padding:25px;background:var(--paper);box-shadow:var(--shadow-sm);transition:.2s}.recommend-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.recommend-card.blue{background:var(--blue);color:#fff}.recommend-card.sand{background:var(--sand)}.recommend-card p{font-size:14px;color:var(--muted)}.recommend-card.blue p{color:#eaf1f2}.text-link{font-size:14px;color:var(--blue-dark);font-weight:700}.text-link:hover{color:var(--blue)}
.site-footer{background:#26353d;color:#dce6e6;padding:65px 0 24px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px}.footer-brand{color:#fff;margin-bottom:16px}.footer-grid p{font-size:13px;color:#aebfc2;max-width:280px}.footer-grid h3{font-size:14px;color:#fff;margin-bottom:14px}.footer-grid>div>a:not(.brand){display:block;color:#aebfc2;font-size:13px;margin:8px 0}.footer-grid>div>a:not(.brand):hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:42px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#9fb0b3;font-size:12px}
.age-notice{position:fixed;left:22px;right:22px;bottom:20px;z-index:30;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:16px;padding:15px 18px;display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:13px}.age-notice p{margin:0;color:var(--muted)}.age-notice button{color:var(--blue-dark);background:var(--blue-soft);border-radius:9px;padding:9px 15px;font-weight:700;white-space:nowrap}
@media(max-width:992px){.hero-inner{grid-template-columns:1fr;gap:35px}.topic-module{grid-template-columns:90px 1fr}.topic-cover{grid-column:2}.info-layout{gap:30px}.recommend-grid{grid-template-columns:1fr 1fr}.recommend-card:first-child{grid-column:span 2}.timeline-grid{grid-template-columns:1fr 1fr}.step:nth-child(2){border-right:0}.footer-grid{grid-template-columns:1.3fr 1fr 1fr}}
@media(max-width:768px){.container{width:min(var(--max),calc(100% - 36px))}.site-header{height:68px}.navbar{grid-template-columns:42px 1fr 42px;gap:5px}.brand{justify-content:center;font-size:14px}.brand-mark{width:26px;height:26px}.nav-side{display:none}.menu-toggle{display:block}.navbar:after{content:"龄";color:var(--blue-dark);font-size:12px;text-align:center;border:1px solid var(--line);border-radius:7px;padding:5px}.site-header.open{height:auto}.site-header.open .navbar{height:68px}.site-header.open .nav-side{display:flex;grid-column:1/-1;flex-direction:column;align-items:stretch;gap:0;padding:10px 0 18px}.site-header.open .nav-side.right{justify-content:flex-start}.site-header.open .nav-link{padding:13px 8px;border-bottom:1px solid var(--line)}.site-header.open .navbar{display:flex;flex-wrap:wrap}.site-header.open .brand{order:2;flex:1}.site-header.open .menu-toggle{order:1}.site-header.open .nav-side{order:3;width:100%}.site-header.open .nav-side.right{order:4}.hero{padding:65px 0 60px}.section{padding:68px 0}.section-head{display:block}.section-head p{margin-top:12px}.index-layout,.info-layout{grid-template-columns:1fr}.index-menu,.info-card{position:static}.topic-module{grid-template-columns:64px 1fr}.topic-cover{grid-column:1/-1}.timeline-grid{grid-template-columns:1fr}.step{border-right:0;border-bottom:1px solid #c8d7d8;margin-right:0}.step:last-child{border-bottom:0}.faq-grid{display:block}.faq-intro{margin-bottom:25px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:span 2}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}.age-notice{left:12px;right:12px;bottom:12px;align-items:flex-start;flex-direction:column;gap:10px}}
@media(max-width:480px){.container{width:calc(100% - 32px)}h1{font-size:34px}.hero-actions .btn{width:100%}.hero-art{padding:12px;min-height:285px}.art-main{height:185px;padding:18px}.art-main strong{font-size:21px}.topic-module{padding:20px;gap:15px}.topic-number{font-size:32px}.recommend-grid{grid-template-columns:1fr}.recommend-card:first-child{grid-column:auto}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category1 */
:root{
 --bg:#f5f7f7;--paper:#fff;--ink:#26353d;--muted:#6e7d82;--blue:#527586;
 --blue-dark:#385b6b;--blue-soft:#e6eff1;--sand:#eee9df;--sage:#e4ebe6;
 --line:#d9e1e1;--shadow:0 16px 42px rgba(46,70,78,.09);
 --shadow-sm:0 8px 24px rgba(46,70,78,.07);--r-lg:24px;--r-md:16px;
 --r-sm:11px;--max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.72;font-size:16px}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer;border:0}
img{max-width:100%;display:block}
h1,h2,h3,p{margin-top:0}
h1,h2,h3{line-height:1.25;letter-spacing:-.035em}
h1{font-size:clamp(36px,5vw,58px);margin-bottom:22px}
h2{font-size:clamp(30px,3.3vw,40px);margin-bottom:15px}
h3{font-size:21px;margin-bottom:10px}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.site-header{height:82px;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;transition:.25s}
.navbar{height:100%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:25px}
.nav-side{display:flex;align-items:center;gap:26px}
.nav-side.right{justify-content:flex-end}
.nav-link{font-size:14px;color:#607177;position:relative;padding:8px 0;transition:.2s}
.nav-link:after{content:"";position:absolute;left:0;right:100%;bottom:1px;height:2px;background:var(--blue);transition:.2s}
.nav-link:hover,.nav-link.active{color:var(--blue-dark)}
.nav-link:hover:after,.nav-link.active:after{right:0}
.brand{display:flex;align-items:center;gap:10px;color:var(--blue-dark);font-size:17px;font-weight:750;letter-spacing:-.03em;white-space:nowrap}
.brand-mark{width:30px;height:30px;border:2px solid var(--blue);border-radius:9px;display:grid;place-items:center;position:relative}
.brand-mark:before{content:"";width:0;height:0;border-top:6px solid transparent;border-bottom:6px solid transparent;border-left:9px solid var(--blue);margin-left:3px}
.menu-toggle{display:none;background:transparent;color:var(--blue-dark);font-size:24px;padding:8px}
.btn{min-height:46px;padding:11px 19px;border-radius:var(--r-sm);display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:14px;border:1px solid transparent;transition:.2s}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(82,117,134,.2)}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(82,117,134,.25)}
.btn-secondary{background:var(--paper);border-color:#b9cbd0;color:var(--blue-dark)}
.btn-secondary:hover{border-color:var(--blue);background:var(--blue-soft)}
.btn:active{transform:translateY(1px)}
.btn:focus-visible,.nav-link:focus-visible,summary:focus-visible,.menu-toggle:focus-visible,input:focus-visible,a:focus-visible{outline:3px solid rgba(82,117,134,.32);outline-offset:3px}
.eyebrow,.section-kicker{color:var(--blue);font-size:12px;letter-spacing:.16em;font-weight:750}
.muted{color:var(--muted)}
.hero{padding:74px 0 58px;background:#edf3f3;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;inset:0;opacity:.42;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:54px 54px;mask-image:linear-gradient(to right,black,transparent 76%);pointer-events:none}
.breadcrumb{position:relative;display:flex;gap:10px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:28px}
.breadcrumb a:hover{color:var(--blue-dark)}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr .78fr;gap:70px;align-items:center}
.hero-copy{max-width:650px}
.hero-copy p{color:var(--muted);font-size:17px;max-width:610px}
.hero-tags{display:flex;gap:9px;flex-wrap:wrap;margin:25px 0}
.badge{display:inline-flex;padding:5px 10px;border-radius:999px;background:var(--blue-soft);color:var(--blue-dark);font-size:11px;font-weight:700}
.cover-board{min-height:360px;background:#d8e5e6;border:1px solid #c4d5d6;border-radius:var(--r-lg);padding:18px;box-shadow:var(--shadow);transform:rotate(1deg)}
.cover-main{height:275px;border-radius:18px;padding:25px;background:linear-gradient(145deg,#7898a3,#385b6b);color:#fff;position:relative;overflow:hidden}
.cover-main:before,.cover-main:after{content:"";position:absolute;border:1px solid rgba(255,255,255,.25);border-radius:50%}
.cover-main:before{width:270px;height:270px;right:-90px;bottom:-110px}
.cover-main:after{width:180px;height:180px;right:-42px;bottom:-66px}
.cover-main small{font-size:11px;letter-spacing:.14em;opacity:.78}
.cover-main strong{display:block;font-size:28px;line-height:1.3;max-width:240px;margin-top:45px;position:relative;z-index:1}
.cover-footer{display:flex;justify-content:space-between;align-items:center;background:var(--paper);border-radius:13px;margin-top:14px;padding:14px 16px;font-size:12px;color:var(--muted)}
.cover-footer b{color:var(--blue-dark)}
.section{padding:92px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:30px}
.section-head p{max-width:560px;color:var(--muted);font-size:15px;margin-bottom:0}
.filter-bar{display:flex;gap:10px;align-items:center;padding:14px;border:1px solid var(--line);background:var(--paper);border-radius:var(--r-md);box-shadow:var(--shadow-sm);overflow-x:auto;margin-bottom:34px}
.filter-label{font-size:13px;color:var(--muted);white-space:nowrap;padding:0 8px}
.filter-btn{white-space:nowrap;min-height:40px;padding:7px 14px;background:#f5f8f8;border:1px solid transparent;border-radius:10px;color:#607177;font-size:13px;transition:.2s}
.filter-btn:hover{background:var(--blue-soft);color:var(--blue-dark)}
.filter-btn.selected{background:var(--blue);color:#fff;box-shadow:0 5px 12px rgba(82,117,134,.18)}
.filter-btn:active{transform:translateY(1px)}
.catalog-layout{display:grid;grid-template-columns:230px 1fr;gap:28px;align-items:start}
.side-panel{padding:25px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-sm);position:sticky;top:105px}
.side-panel h3{font-size:18px}
.side-panel p{font-size:14px;color:var(--muted);margin-bottom:22px}
.side-list{list-style:none;padding:0;margin:0}
.side-list li{border-top:1px solid var(--line)}
.side-list a{display:flex;justify-content:space-between;gap:8px;padding:13px 0;color:#607177;font-size:14px}
.side-list a:hover,.side-list a.active{color:var(--blue-dark);font-weight:700}
.side-list a span{color:#a0afb2}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.content-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--shadow-sm);transition:.25s;display:flex;flex-direction:column}
.content-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#b9cbd0}
.content-card:focus-within{border-color:var(--blue);box-shadow:0 0 0 3px rgba(82,117,134,.12)}
.content-card.featured{grid-column:span 2}
.card-cover{height:158px;background:var(--blue-soft);position:relative;overflow:hidden;padding:17px}
.featured .card-cover{height:208px}
.card-cover:before{content:"";position:absolute;inset:0;background-image:linear-gradient(120deg,transparent 45%,rgba(255,255,255,.25) 46%,transparent 47%),linear-gradient(90deg,rgba(82,117,134,.11) 1px,transparent 1px);background-size:auto,34px 34px}
.cover-sand{background:var(--sand)}
.cover-sage{background:var(--sage)}
.cover-blue{background:#dcebef}
.cover-title{position:relative;z-index:1;font-weight:800;color:var(--blue-dark);font-size:20px;max-width:180px;line-height:1.35}
.cover-note{position:absolute;bottom:16px;right:16px;background:rgba(255,255,255,.72);padding:6px 9px;border-radius:8px;color:var(--blue-dark);font-size:11px;z-index:1}
.card-body{padding:21px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:19px}
.card-body p{font-size:14px;color:var(--muted);margin-bottom:17px}
.card-meta{display:flex;justify-content:space-between;gap:10px;font-size:12px;color:#829094;margin-top:auto;padding-top:11px;border-top:1px solid var(--line)}
.card-link{margin-top:16px;color:var(--blue-dark);font-size:14px;font-weight:700}
.card-link span{transition:.2s}
.card-link:hover span{margin-left:5px}
.notice-card{grid-column:1/-1;background:var(--sand);border:1px solid #ded6c8;border-radius:var(--r-md);padding:23px 27px;display:flex;align-items:center;justify-content:space-between;gap:25px}
.notice-card p{margin:5px 0 0;color:#6f716c;font-size:14px}
.notice-icon{width:40px;height:40px;border-radius:12px;background:#fff7e9;color:var(--blue-dark);display:grid;place-items:center;font-weight:800;flex:none}
.editorial{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.editorial-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:center}
.editorial-art{min-height:330px;border-radius:var(--r-lg);background:#e6eeec;position:relative;padding:22px;overflow:hidden}
.editorial-art .sheet{position:absolute;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-sm);padding:18px}
.sheet.one{left:13%;top:15%;width:57%;height:205px;transform:rotate(-5deg)}
.sheet.two{right:9%;bottom:12%;width:45%;height:142px;transform:rotate(7deg);background:var(--blue-soft)}
.sheet strong{display:block;color:var(--blue-dark);margin:12px 0}
.sheet i{display:block;height:7px;background:#d6e1e1;border-radius:4px;margin:10px 0;width:78%}
.sheet i.short{width:48%}
.editorial-copy p{color:var(--muted);font-size:16px}
.check-list{list-style:none;padding:0;margin:23px 0}
.check-list li{padding:10px 0 10px 28px;border-bottom:1px solid var(--line);position:relative;font-size:14px}
.check-list li:before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:800}
.extend{padding:82px 0}
.extend-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.extend-card{min-height:180px;padding:27px;border-radius:var(--r-lg);border:1px solid var(--line);background:var(--paper);box-shadow:var(--shadow-sm);transition:.25s}
.extend-card.blue{background:var(--blue);color:#fff}
.extend-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.extend-card p{color:var(--muted);font-size:14px;max-width:420px}
.extend-card.blue p{color:#e6eff1}
.extend-card a{display:inline-block;margin-top:13px;color:var(--blue-dark);font-size:14px;font-weight:700}
.extend-card.blue a{color:#fff}
.faq-section{padding:78px 0 96px;background:#eef3f2}
.faq-grid{display:grid;grid-template-columns:.7fr 1.3fr;gap:65px}
.faq-intro p{color:var(--muted);font-size:15px}
.faq-list details{border-bottom:1px solid var(--line);padding:17px 0}
.faq-list summary{list-style:none;cursor:pointer;font-weight:700;display:flex;justify-content:space-between;gap:20px;align-items:center;padding:4px 0}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:after{content:"+";font-size:22px;color:var(--blue);font-weight:400}
.faq-list details[open]{background:var(--blue-soft);border-left:3px solid var(--blue);padding:17px 18px}
.faq-list details[open] summary:after{content:"−"}
.faq-answer{color:var(--muted);font-size:14px;padding:12px 34px 2px 0}
.cta{padding:94px 0;text-align:center;background:var(--bg)}
.cta p{max-width:590px;margin:0 auto 25px;color:var(--muted)}
.site-footer{background:#263942;color:#dce6e7;padding:62px 0 23px}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr .8fr;gap:35px}
.footer-brand{color:#fff;margin-bottom:17px}
.footer-brand .brand-mark{border-color:#a9c6cc}
.footer-brand .brand-mark:before{border-left-color:#a9c6cc}
.site-footer p{font-size:13px;color:#aebec1;max-width:280px}
.site-footer h3{font-size:14px;color:#fff;margin-bottom:14px}
.site-footer a:not(.brand){display:block;color:#aebec1;font-size:13px;padding:4px 0;transition:.2s}
.site-footer a:not(.brand):hover{color:#fff;padding-left:3px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:42px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#91a5a8;font-size:12px}
.age-bar{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);border-radius:14px;padding:13px 16px;display:flex;justify-content:space-between;align-items:center;gap:18px;margin-top:20px;font-size:13px;color:var(--muted)}
.age-bar strong{color:var(--blue-dark)}
.top-link{position:fixed;right:24px;bottom:24px;background:var(--blue);color:#fff;border-radius:10px;width:44px;height:44px;display:grid;place-items:center;box-shadow:var(--shadow-sm);font-weight:700}
@media(max-width:992px){
 .hero-grid,.editorial-grid{grid-template-columns:1fr;gap:38px}
 .cover-board{max-width:650px}
 .catalog-layout{grid-template-columns:190px 1fr}
 .card-grid{grid-template-columns:repeat(2,1fr)}
 .featured{grid-column:span 2}
 .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
 .container{width:min(var(--max),calc(100% - 36px))}
 .site-header{height:70px}
 .navbar{grid-template-columns:42px 1fr 42px;gap:8px}
 .menu-toggle{display:block}
 .nav-side{position:absolute;display:none;left:18px;right:18px;top:69px;padding:18px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:0 0 18px 18px;flex-direction:column;align-items:stretch;gap:4px}
 .nav-side.right{display:flex;position:static;padding:0;border:0;box-shadow:none;background:none;justify-content:flex-end}
 .nav-side.right .nav-link{font-size:0;width:42px;text-align:center}
 .nav-side.right .nav-link:before{content:"？";font-size:17px;color:var(--blue-dark)}
 .nav-side.right .nav-link:after{display:none}
 .navbar.menu-open .nav-side:first-of-type{display:flex}
 .brand{font-size:14px;justify-content:center}
 .brand-mark{width:27px;height:27px}
 .hero{padding:54px 0 45px}
 .hero-grid{gap:28px}
 .section{padding:68px 0}
 .section-head,.notice-card{align-items:flex-start;flex-direction:column}
 .catalog-layout,.faq-grid{grid-template-columns:1fr;gap:28px}
 .side-panel{position:static}
 .side-list{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}
 .card-grid{grid-template-columns:1fr}
 .content-card.featured,.notice-card{grid-column:auto}
 .featured .card-cover{height:190px}
 .extend-grid{grid-template-columns:1fr}
 .editorial-grid{gap:30px}
 .faq-grid{gap:22px}
}
@media(max-width:480px){
 .container{width:calc(100% - 32px)}
 h1{font-size:34px}
 .hero-copy p{font-size:16px}
 .cover-board{padding:12px;min-height:300px}
 .cover-main{height:220px;padding:19px}
 .cover-main strong{font-size:23px;margin-top:30px}
 .filter-bar{margin-left:-2px;margin-right:-2px}
 .card-body{padding:18px}
 .footer-grid{grid-template-columns:1fr;gap:24px}
 .footer-bottom{display:block;line-height:2}
 .footer-bottom span{display:block}
 .age-bar{align-items:flex-start;flex-direction:column}
 .age-bar .btn{width:100%}
}
@media(prefers-reduced-motion:reduce){
 *,*::before,*::after{scroll-behavior:auto!important;transition:none!important}
}