/* roulang page: index */
:root{
  --color-bg:#F4F8FB;
  --color-surface:#FFFFFF;
  --color-primary:#1A6DB5;
  --color-primary-dark:#0E4A7E;
  --color-primary-soft:#E7F1F9;
  --color-accent:#F26B3F;
  --color-accent-soft:#FDEEE8;
  --color-text-strong:#16283C;
  --color-text-body:#333F4E;
  --color-muted:#6C7A8A;
  --color-line:#DCE6EE;
  --shadow-sm:0 2px 8px rgba(23,65,104,.06);
  --shadow-md:0 8px 24px rgba(23,65,104,.10);
  --shadow-lg:0 20px 56px rgba(23,65,104,.16);
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --font-sans:"PingFang SC","Microsoft YaHei UI","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{font-size:62.5%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text-body);font-size:1.5rem;line-height:1.75;letter-spacing:.01em;-webkit-font-smoothing:antialiased}
body.has-bottom-nav{padding-bottom:68px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input,select,textarea{font-family:inherit}
p{margin:0 0 1rem}
h1,h2,h3,h4,h5,h6{margin:0 0 1rem;color:var(--color-text-strong);line-height:1.3;font-weight:600}
ul,ol,li{margin:0;padding:0;list-style:none}
.container-main{max-width:1200px;margin:0 auto;padding-left:1.6rem;padding-right:1.6rem}
.section-padding{padding:5.6rem 0 6rem}
.section-title-row{display:flex;align-items:flex-end;justify-content:space-between;gap:2rem;margin-bottom:2.8rem}
.section-title-wrap{display:flex;align-items:center;gap:12px}
.section-title-wrap::before{content:"";display:block;width:4px;height:28px;border-radius:99px;background:var(--color-primary)}
.section-kicker{font-size:1.3rem;color:var(--color-primary);font-weight:600;margin-bottom:.5rem;letter-spacing:.08em}
.section-title{font-size:clamp(2.2rem,2.6vw,3.2rem);font-weight:700;margin-bottom:.6rem}
.section-sub{color:var(--color-muted);font-size:1.45rem;max-width:720px}
html{scroll-padding-top:84px}

.site-btn{display:inline-flex;align-items:center;justify-content:center;gap:.8rem;border-radius:999px;font-weight:600;padding:1.1rem 2.4rem;min-height:4.8rem;border:1px solid transparent;transition:all .2s ease;font-size:1.5rem;cursor:pointer}
.site-btn svg{width:1.7rem;height:1.7rem;flex:none}
.site-btn--accent{background:var(--color-accent);border-color:var(--color-accent);color:#fff;box-shadow:0 10px 22px rgba(242,107,63,.26)}
.site-btn--accent:hover{background:#d9552f;border-color:#d9552f;color:#fff;transform:translateY(-2px)}
.site-btn--outline{border-color:#C7D6E4;color:var(--color-text-body);background:rgba(255,255,255,.7)}
.site-btn--outline:hover{border-color:var(--color-primary);color:var(--color-primary);background:var(--color-surface);transform:translateY(-2px)}
.site-btn--light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.45)}
.site-btn--light:hover{background:#fff;color:var(--color-primary-dark);border-color:#fff}
.site-btn:focus-visible{outline:3px solid rgba(26,109,181,.25);outline-offset:2px}

.site-header{position:sticky;top:0;z-index:1030;background:rgba(255,255,255,.78);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid rgba(220,230,238,.75);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(23,65,104,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px}
.brand{display:inline-flex;align-items:center;gap:1rem;flex:none}
.brand-mark{width:4.2rem;height:4.2rem;border-radius:13px;display:grid;place-items:center;background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-primary-dark) 100%);color:#fff;box-shadow:0 8px 18px rgba(26,109,181,.22)}
.brand-mark svg{width:2.1rem;height:2.1rem}
.brand-text{font-size:1.8rem;font-weight:800;color:var(--color-text-strong);line-height:1;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--color-primary)}
.header-nav-main{display:flex;align-items:center}
.nav-list{display:flex;align-items:center;gap:1px}
.nav-list a{position:relative;display:block;padding:2.7rem 1.7rem 2.3rem;font-weight:500;color:var(--color-text-body);font-size:1.5rem;line-height:1;transition:color .2s ease}
.nav-list a::after{content:"";position:absolute;left:1.6rem;right:1.6rem;bottom:1.18rem;height:2px;border-radius:9px;background:var(--color-primary);transform:scaleX(0);transform-origin:center;transition:transform .2s ease}
.nav-list a:hover,.nav-list a.active{color:var(--color-primary)}
.nav-list a:hover::after,.nav-list a.active::after{transform:scaleX(1)}
.header-cta{padding:1rem 1.5rem 1rem 1.5rem}
.bottom-tab-placeholder{display:block}
.mobile-bottom-nav{display:none}
@media(min-width:992px){.header-nav-cta-m{display:none}}
@media(max-width:991.98px){
  .header-inner{height:64px}
  .header-nav-main{display:none}
  .header-cta{display:none}
  .site-header{padding-left:1.2rem;padding-right:1.2rem}
  .mobile-bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:1050;display:flex;background:rgba(255,255,255,.96);backdrop-filter:blur(14px);border-top:1px solid rgba(220,230,238,.9);padding-bottom:env(safe-area-inset-bottom);box-shadow:0 -4px 20px rgba(23,65,104,.06)}
  .mobile-bottom-nav a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;height:62px;color:var(--color-muted);font-size:1.15rem;font-weight:500}
  .mobile-bottom-nav a svg{width:2rem;height:2rem}
  .mobile-bottom-nav a span{line-height:1.2}
  .mobile-bottom-nav a:hover,.mobile-bottom-nav a.active{color:var(--color-primary);background:rgba(231,241,249,.55)}
  .body-has-mobile-nav{padding-bottom:68px}
}

.hero-section{position:relative;overflow:hidden;padding:4.6rem 0 4.8rem}
.hero-section::before{content:"";position:absolute;right:-12%;top:-10%;width:560px;height:560px;background:radial-gradient(circle,rgba(26,109,181,.10) 0,transparent 65%);pointer-events:none}
.hero-section::after{content:"";position:absolute;left:0;top:0;width:100%;height:100%;background-image:linear-gradient(to right,rgba(26,109,181,.045) 1px,transparent 1px),linear-gradient(to bottom,rgba(26,109,181,.035) 1px,transparent 1px);background-size:46px 46px;mask-image:radial-gradient(circle at 30% 50%,#000 0%,transparent 70%);pointer-events:none}
.hero-copy{position:relative;z-index:2}
.eyebrow{display:inline-flex;align-items:center;gap:.7rem;background:var(--color-primary-soft);color:var(--color-primary);border:1px solid rgba(26,109,181,.15);border-radius:99px;padding:.6rem 1.2rem;font-size:1.3rem;font-weight:600;margin-bottom:1.8rem}
.eyebrow svg{width:1.5rem;height:1.5rem}
.hero-title{font-size:clamp(3rem,4.6vw,4.6rem);font-weight:800;line-height:1.22;letter-spacing:-.01em;margin-bottom:1.8rem}
.hero-title .y{color:var(--color-primary)}
.hero-desc{font-size:1.7rem;line-height:1.85;color:#3A4E63;max-width:560px;margin-bottom:3rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:1.2rem;margin-bottom:3.2rem}
.hero-tags{display:flex;flex-wrap:wrap;gap:1.4rem 2.6rem}
.hero-tags li{display:flex;align-items:center;gap:.8rem;color:var(--color-muted);font-size:1.36rem}
.hero-tags svg{width:2rem;height:2rem;color:var(--color-primary);flex:none}
.hero-visual{position:relative;z-index:2}
.visual-panel{margin-left:auto;max-width:540px;position:relative}
.visual-device{border-radius:26px;overflow:hidden;background:#fff;box-shadow:var(--shadow-lg);border:1px solid rgba(255,255,255,.9)}
.device-topbar{display:flex;align-items:center;gap:8px;padding:1.5rem 1.8rem;background:#fff;border-bottom:1px solid var(--color-line)}
.device-topbar span{width:10px;height:10px;border-radius:50%}
.device-content{height:440px;background:#fff;position:relative}
.mini-screens{background-image:linear-gradient(160deg,rgba(10,46,80,.15) 0,transparent 26%),url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;height:100%;position:relative}
.mini-screens::before{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(244,248,251,.96) 0%,rgba(244,248,251,.2) 35%)}
.skel-card{position:absolute;left:14%;right:14%;bottom:20%;background:#fff;padding:1.6rem;border-radius:14px;box-shadow:var(--shadow-md)}
.skel-card h4{font-size:1.5rem;font-weight:700;margin-bottom:.5rem}
.skel-card p{font-size:1.25rem;color:var(--color-muted);margin:0}
.device-badge{position:absolute;right:18%;bottom:20%;background:var(--color-primary);color:#fff;padding:.7rem 1.3rem;border-radius:999px;display:flex;align-items:center;gap:.6rem;box-shadow:0 8px 22px rgba(26,109,181,.28);font-size:1.25rem}
.device-badge svg{width:1.6rem;height:1.6rem}
@media(max-width:991.98px){
  .hero-section{padding-top:3rem}
  .hero-visual{margin-top:4rem}
  .visual-panel{margin:0 auto}
}
@media(max-width:575.98px){
  .hero-title{font-size:3rem}
  .hero-desc{font-size:1.55rem}
  .hero-actions .site-btn{width:100%}
  .hero-tags{gap:1rem 1.6rem}
  .visual-device .mini-screens{min-height:330px}
  .device-content{height:300px}
}

.comments-row{display:flex;gap:2rem;overflow-x:auto;padding-bottom:1.2rem;scroll-snap-type:x proximity}
.comment-bubble{flex:0 0 auto;width:300px;background:#fff;border:1px solid var(--color-line);border-radius:18px;padding:2rem 1.8rem;display:flex;align-items:flex-start;gap:1.2rem;scroll-snap-align:start;box-shadow:var(--shadow-sm);transition:box-shadow .25s ease}
.comment-bubble:hover{box-shadow:var(--shadow-md)}
.comment-avatar{width:5rem;height:5rem;flex:none;border-radius:50%;display:grid;place-items:center;font-size:2rem;font-weight:600;color:#fff;background:linear-gradient(135deg,#3A89C9,#0E4A7E)}
.comment-body{min-width:0}
.comment-name{font-size:1.45rem;font-weight:700;color:var(--color-text-strong)}
.comment-stars{display:flex;gap:2px;color:#F4A93B;margin:.4rem 0 .6rem}
.comment-stars svg{width:1.45rem;height:1.45rem}
.comment-body p{font-size:1.35rem;color:var(--color-muted);line-height:1.75;margin:0}
@media(max-width:767.98px){
  .comments-row{gap:1.2rem;margin:0 -1rem;padding-left:1rem;padding-right:1rem}
  .comment-bubble{width:270px;padding:1.5rem}
}
.topic-spot{display:flex;flex-direction:column;height:100%;overflow:hidden;border-radius:18px;background:#fff;border:1px solid var(--color-line);box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease}
.topic-spot:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.topic-card-media{position:relative;overflow:hidden;border-radius:18px 18px 0 0}
.topic-card-media img{width:100%;height:200px;object-fit:cover;transition:transform .4s ease}
.topic-spot--large .topic-card-media img{height:300px}
.topic-spot:hover .topic-card-media img{transform:scale(1.04)}
.topic-card-body{padding:1.8rem;display:flex;flex-direction:column;flex:1}
.topic-card-body h3{font-size:1.9rem;font-weight:700;color:var(--color-text-strong);margin-bottom:.8rem}
.topic-card-body p{font-size:1.4rem;color:var(--color-muted);line-height:1.75;margin-bottom:1.2rem}
.topic-tag{position:absolute;left:1.4rem;top:1.4rem;background:rgba(255,255,255,.9);backdrop-filter:blur(8px);color:var(--color-primary);padding:.5rem 1.1rem;border-radius:99px;font-size:1.25rem;font-weight:600}
.topic-meta{color:var(--color-primary);font-weight:600;font-size:1.4rem;display:inline-flex;align-items:center;gap:.8rem;margin-top:auto}
.topic-meta .arrow-right{transition:transform .2s ease;display:inline-block}
.topic-spot:hover .arrow-right{transform:translateX(4px)}
@media(max-width:575.98px){
  .topic-card-media img{height:190px}
  .topic-spot--large .topic-card-media img{height:240px}
  .topic-card-body h3{font-size:1.7rem}
  .topic-card-body{padding:1.5rem}
}
.feature-card{position:relative;border:1px solid var(--color-line);border-radius:18px;background:var(--color-surface);padding:2.2rem;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;margin-bottom:2rem;transition:box-shadow .25s ease,transform .25s ease}
.feature-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.feature-num{position:absolute;right:2.2rem;top:2rem;font-size:2.4rem;font-weight:800;color:rgba(26,109,181,.12);line-height:1}
.feature-icon{width:4.8rem;height:4.8rem;border-radius:14px;background:var(--color-primary-soft);color:var(--color-primary);display:grid;place-items:center;margin-bottom:1.4rem}
.feature-icon svg{width:2.4rem;height:2.4rem}
.feature-card h3{font-size:1.8rem;margin-bottom:.6rem;color:var(--color-text-strong)}
.feature-card p{color:var(--color-muted);font-size:1.4rem;line-height:1.8;margin-bottom:1.4rem;max-width:480px}
.feature-like{position:absolute;right:2.2rem;top:4.3rem;width:3.6rem;height:3.6rem;display:grid;place-items:center;border-radius:50%;border:1px solid var(--color-line);color:var(--color-muted);transition:all .2s ease}
.feature-like:hover{color:var(--color-accent);border-color:var(--color-accent);background:var(--color-accent-soft)}
.feature-like svg{width:1.8rem;height:1.8rem}
@media(max-width:767.98px){
  .feature-card{padding:1.8rem;border-radius:16px}
  .feature-card h3{font-size:1.7rem}
  .feature-num{top:1.5rem}
}
.news-panel{background:#fff;border:1px solid var(--color-line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-sm)}
.news-item{display:block;padding:2rem 2.4rem;border-bottom:1px solid var(--color-line);transition:background .2s ease,transform .2s ease}
.news-item:last-child{border-bottom:0}
.news-item:hover{background:var(--color-primary-soft)}
.news-item__top{display:flex;gap:1.2rem;justify-content:space-between;align-items:center;margin-bottom:.7rem}
.news-cat{display:inline-flex;background:var(--color-primary-soft);color:var(--color-primary);padding:.3rem 1rem;border-radius:99px;font-size:1.2rem;font-weight:600}
.news-date{color:var(--color-muted);font-size:1.3rem}
.news-item h3{font-size:1.8rem;font-weight:700;color:var(--color-text-strong);margin-bottom:.5rem;transition:color .2s ease}
.news-item:hover h3{color:var(--color-primary)}
.news-item p{font-size:1.4rem;color:var(--color-muted);line-height:1.75;margin-bottom:1rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-read-more{display:inline-flex;align-items:center;gap:.5rem;color:var(--color-primary);font-size:1.35rem;font-weight:600}
.news-read-more svg{width:1.6rem;height:1.6rem}
.news-empty{border:1px dashed var(--color-line);border-radius:18px;background:#FBFDFF;padding:4.5rem 2rem;text-align:center}
.news-empty__icon{width:7rem;height:7rem;margin:0 auto 1.6rem;border-radius:50%;background:var(--color-primary-soft);color:var(--color-primary);display:grid;place-items:center}
.news-empty__icon svg{width:3rem;height:3rem}
.news-empty h3{font-size:1.8rem;margin-bottom:.5rem}
.news-empty p{color:var(--color-muted)}
@media(max-width:575.98px){
  .news-item__top{flex-direction:row}
  .news-item{padding:1.6rem 1.6rem}
  .news-item h3{font-size:1.65rem}
  .news-date{font-size:1.2rem}
}
.cta-panel{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--color-primary-dark) 0%,#123F62 55%,#1A6DB5 100%);color:#fff;padding:5.5rem 0}
.cta-glow{position:absolute;right:-8rem;bottom:-8rem;width:44rem;height:44rem;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.14) 0,transparent 66%);pointer-events:none}
.cta-row{display:flex;align-items:center;justify-content:space-between;gap:3rem;position:relative;z-index:2}
.cta-copy h2{color:#fff;font-size:clamp(2.6rem,3.5vw,4rem);font-weight:800;line-height:1.3;margin-bottom:1.4rem}
.cta-copy p{color:rgba(255,255,255,.82);font-size:1.6rem;max-width:560px;margin-bottom:2.2rem}
.cta-note{font-size:1.3rem !important;color:rgba(255,255,255,.58) !important;margin-top:1.4rem !important;margin-bottom:0 !important}
.cta-illus{flex:none;width:300px;height:300px;border-radius:28px;overflow:hidden;box-shadow:0 30px 60px rgba(0,0,0,.22);border:4px solid rgba(255,255,255,.16)}
.cta-illus img{width:100%;height:100%;object-fit:cover}
@media(max-width:991.98px){
  .cta-row{flex-direction:column;align-items:flex-start}
  .cta-illus{width:230px;height:230px;align-self:center;margin-top:1rem}
}
@media(max-width:575.98px){
  .cta-illus{width:100%;height:180px;border-radius:18px}
}
.faq-accordion .accordion-item{border:1px solid var(--color-line);border-radius:18px!important;overflow:hidden;background:#fff;box-shadow:var(--shadow-sm);margin-bottom:1.6rem;transition:box-shadow .2s ease}
.faq-accordion .accordion-item:last-child{margin-bottom:1.6rem}
.faq-accordion .accordion-item:hover{box-shadow:var(--shadow-md)}
.faq-accordion .accordion-button{display:flex;align-items:center;gap:1.2rem;padding:2rem;background:#fff;box-shadow:none;border-radius:18px!important;font-size:1.55rem;font-weight:600;color:var(--color-text-strong);border-bottom:1px solid transparent}
.faq-accordion .accordion-button:not(.collapsed){background:#fff;color:var(--color-primary);border-bottom-color:var(--color-line)}
.faq-accordion .accordion-button:focus{box-shadow:0 0 0 3px rgba(26,109,181,.18)}
.faq-accordion .accordion-button::after{background-image:none;content:"⌄";transform:rotate(0deg);transition:transform .3s ease;font-size:2rem;color:var(--color-primary);line-height:1;width:3rem;text-align:center}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(180deg)}
.faq-icon{flex:none;height:2.6rem;min-width:2.6rem;border-radius:50%;background:var(--color-primary-soft);color:var(--color-primary);display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:1.3rem}
.faq-accordion .accordion-body{padding:1.8rem 2rem 2.4rem;background:#FBFDFF;color:var(--color-text-body);font-size:1.5rem;line-height:1.9}
@media(max-width:575.98px){
  .faq-accordion .accordion-button{padding:1.6rem;font-size:1.45rem}
  .faq-accordion .accordion-body{padding:1.5rem}
}
.site-footer{background:var(--color-primary-dark);color:rgba(255,255,255,.82);padding:5rem 0 2rem;margin-top:0}
.site-footer .container-main{padding-top:1.6rem}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1.2fr;gap:3rem;padding-bottom:3.6rem;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand{display:inline-flex;align-items:center;gap:.8rem;font-size:2rem;color:#fff;font-weight:800;margin-bottom:1.4rem}
.footer-brand svg{width:2rem;height:2rem}
.footer-about p{color:rgba(255,255,255,.68);max-width:430px;font-size:1.4rem;line-height:1.85}
.footer-links h3,.footer-service h3{font-size:1.6rem;font-weight:700;color:#fff;margin-bottom:1.6rem}
.footer-links li,.footer-service li{margin-bottom:1rem;font-size:1.4rem}
.footer-links a{color:rgba(255,255,255,.75);transition:color .2s ease}
.footer-links a:hover{color:#fff}
.footer-bottom{padding-top:2.2rem;font-size:1.3rem;color:rgba(255,255,255,.5);text-align:center}
@media(max-width:991.98px){
  .footer-top{grid-template-columns:1fr 1fr}
  .footer-about{grid-column:1 / -1}
}
@media(max-width:575.98px){
  .footer-top{grid-template-columns:1fr;gap:2.4rem;padding-bottom:2.6rem}
  .site-footer{padding-top:3.6rem}
}
.section-footer-cta{background:rgba(255,255,255,.04);padding-top:2.2rem;padding-bottom:2.2rem}

/* roulang page: category1 */
:root{
  --color-bg:#F4F8FB;
  --color-surface:#FFFFFF;
  --color-primary:#1A6DB5;
  --color-primary-dark:#0E4A7E;
  --color-primary-soft:#E7F1F9;
  --color-accent:#F26B3F;
  --color-accent-soft:#FDEEE8;
  --color-text-strong:#16283C;
  --color-text-body:#333F4E;
  --color-muted:#6C7A8A;
  --color-line:#DCE6EE;
  --shadow-sm:0 2px 8px rgba(23,65,104,.06);
  --shadow-md:0 8px 24px rgba(23,65,104,.10);
  --shadow-lg:0 20px 56px rgba(23,65,104,.14);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:62.5%;scroll-behavior:smooth}
body{margin:0;background:var(--color-bg);color:var(--color-text-body);font-family:"PingFang SC","Microsoft YaHei UI","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:1.6rem;line-height:1.75;font-variant-numeric:tabular-nums}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea{font-family:inherit}
h1,h2,h3,h4,p{margin:0}
.container-main{max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px}
.section-pad{padding:96px 0}
@media(max-width:991px){.section-pad{padding:64px 0}.container-main{padding-left:24px;padding-right:24px}}
@media(max-width:575px){.container-main{padding-left:16px;padding-right:16px}html{font-size:58.5%}}
a:focus-visible,button:focus-visible{outline:3px solid rgba(26,109,181,.25);outline-offset:2px;border-radius:6px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:1050;background:rgba(255,255,255,.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--color-line);transition:box-shadow .25s ease, background .25s ease}
.site-header:hover,.site-header.is-sticky{background:rgba(255,255,255,.94);box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:2rem;font-weight:800;color:var(--color-text-strong);white-space:nowrap}
.brand-mark{width:38px;height:38px;border-radius:11px;background:var(--color-primary);color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.brand-mark svg{width:20px;height:20px}
.brand-text{letter-spacing:-.2px}
.brand-text em{font-style:normal;color:var(--color-accent)}
.header-nav-main .nav-list{display:flex;align-items:center;gap:36px;margin:0;padding:0;list-style:none}
.nav-list a{position:relative;display:inline-block;font-size:1.55rem;font-weight:600;color:var(--color-text-body);padding:10px 0;transition:color .2s ease}
.nav-list a::after{content:"";position:absolute;left:0;bottom:4px;width:0;height:2px;background:var(--color-primary);transition:width .25s ease;border-radius:99px}
.nav-list a:hover{color:var(--color-primary)}
.nav-list a:hover::after{width:100%}
.nav-list a.active{color:var(--color-primary)}
.nav-list a.active::after{width:100%}
.header-cta{flex-shrink:0}
.site-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;font-weight:700;line-height:1;transition:all .25s ease;cursor:pointer;text-align:center;letter-spacing:.2px}
.site-btn--accent{background:var(--color-accent);color:#fff;box-shadow:0 6px 18px rgba(242,107,63,.28)}
.site-btn--accent:hover{background:#e15a2c;color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(242,107,63,.32)}
.site-btn--ghost{background:transparent;color:var(--color-primary-dark);border:1.5px solid rgba(26,109,181,.4)}
.site-btn--ghost:hover{background:var(--color-primary-soft);border-color:var(--color-primary)}
.site-btn--light{background:#fff;color:var(--color-primary-dark)}
.site-btn--light:hover{background:#edf5fc;transform:translateY(-2px)}
@media(max-width:991px){.header-nav-main,.header-cta{display:none}.header-inner{height:64px}}
@media(min-width:992px){.brand{font-size:2.1rem}}

/* ---------- Mobile Tabbar ---------- */
.mobile-tabbar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:1100;background:rgba(255,255,255,.96);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-top:1px solid var(--color-line);padding:4px 8px calc(4px + env(safe-area-inset-bottom));box-shadow:0 -4px 20px rgba(23,65,104,.07)}
.mobile-tabbar .tab-list{display:flex;align-items:stretch;justify-content:space-around;max-width:480px;margin:0 auto}
.tab-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;min-height:54px;padding:4px 6px;color:var(--color-muted);font-size:1.15rem;text-align:center;transition:color .2s ease}
.tab-item svg{width:22px;height:22px}
.tab-item:hover,.tab-item.active{color:var(--color-primary)}
@media(max-width:991px){.mobile-tabbar{display:block}body{padding-bottom:68px}}
@media(min-width:992px){.mobile-tabbar{display:none!important}}

/* ---------- Hero ---------- */
.hero-split{position:relative;overflow:hidden;background:var(--color-bg);padding:72px 0 88px}
.hero-split:before{content:"";position:absolute;top:-120px;right:-80px;width:460px;height:460px;background:radial-gradient(circle,rgba(26,109,181,.12) 0%,rgba(26,109,181,0) 70%);border-radius:50%;pointer-events:none}
.hero-split:after{content:"";position:absolute;left:0;bottom:0;width:100%;height:3px;background:linear-gradient(90deg,var(--color-primary-soft) 0%,var(--color-primary) 50%,var(--color-primary-soft) 100%);opacity:.5}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:64px;align-items:center}
.hero-copy .hero-eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--color-primary-soft);color:var(--color-primary-dark);border-radius:999px;padding:7px 16px;font-size:1.3rem;font-weight:700;letter-spacing:.4px}
.hero-copy .hero-eyebrow .pulse-dot{width:8px;height:8px;border-radius:50%;background:#2fae72;box-shadow:0 0 0 0 rgba(47,174,114,.4);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(47,174,114,.35)}70%{box-shadow:0 0 0 10px rgba(47,174,114,0)}100%{box-shadow:0 0 0 0 rgba(47,174,114,0)}}
.hero-copy h1{color:var(--color-text-strong);font-size:clamp(3.2rem,4.2vw,5.2rem);font-weight:800;line-height:1.22;margin:20px 0 18px;letter-spacing:-.5px}
.hero-copy h1 span{color:var(--color-primary)}
.hero-lead{font-size:1.75rem;line-height:1.8;color:var(--color-text-body);max-width:540px;margin-bottom:30px}
.hero-btns{display:flex;flex-wrap:wrap;gap:16px;align-items:center}
.hero-note{display:flex;gap:18px;flex-wrap:wrap;margin-top:32px;padding-top:26px;border-top:1px solid var(--color-line)}
.hero-note-item{display:flex;align-items:center;gap:8px;font-size:1.35rem;color:var(--color-muted)}
.hero-note-item svg{width:20px;height:20px;color:var(--color-primary);flex-shrink:0}
.hero-window{border-radius:26px;background:var(--color-surface);box-shadow:var(--shadow-lg);border:1px solid var(--color-line);overflow:hidden;max-width:480px;margin-left:auto;transform:translateY(8px)}
.hw-top{display:flex;align-items:center;gap:6px;background:#f7fafd;padding:14px 18px;border-bottom:1px solid var(--color-line)}
.hw-top i{width:10px;height:10px;border-radius:50%;display:block}
.hw-top i:nth-child(1){background:#ffb3a0}
.hw-top i:nth-child(2){background:#f7c873}
.hw-top i:nth-child(3){background:#73cba8}
.hw-top .hw-url{margin-left:10px;font-size:1.2rem;color:var(--color-muted);background:#eaf1f7;border-radius:6px;padding:4px 10px;flex:0 1 auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hw-body{position:relative;background:linear-gradient(rgba(14,74,126,.28) 0%,rgba(14,74,126,.13) 100%),url('/assets/images/backpic/back-1.png') center/cover no-repeat;padding:32px 24px 34px;min-height:360px;display:flex;flex-direction:column;justify-content:flex-end}
.hw-body:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(6,31,52,.76) 100%)}
.hw-content{position:relative;z-index:3;color:#fff}
.hw-content .chip-online{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.25);backdrop-filter:blur(6px);padding:6px 12px;border-radius:999px;font-size:1.25rem;font-weight:600;margin-bottom:14px}
.hw-content .chip-online::before{content:"";width:7px;height:7px;border-radius:50%;background:#5be3a4}
.hw-content h3{font-size:1.45rem;font-weight:400;letter-spacing:.8px;opacity:.8}
.hw-content strong{display:block;font-size:3rem;font-weight:800;margin-top:8px;line-height:1.2}
.hw-login-box{margin-top:22px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);border-radius:16px;padding:14px 16px;backdrop-filter:blur(8px)}
.hw-login-box div{height:6px;border-radius:3px;background:rgba(255,255,255,.45);margin-top:10px}
.hw-login-box div:nth-child(2){width:70%;margin-top:6px}
.hw-login-box span{font-size:1.15rem;font-weight:600;opacity:.92}
@media(max-width:991px){.hero-grid{grid-template-columns:1fr;gap:40px}.hero-window{margin:0 auto;max-width:520px}.hero-split{padding:48px 0 64px}}
@media(max-width:575px){.hero-split{padding:40px 0 56px}.hero-copy h1{font-size:3.1rem}.hero-lead{font-size:1.55rem}.hero-btns .site-btn{width:100%}.hero-window{border-radius:18px}.hw-content strong{font-size:2.6rem}}

/* Section heading */
.section-head{margin-bottom:46px;max-width:760px}
.section-head .sec-tag{display:inline-flex;align-items:center;gap:6px;font-size:1.35rem;font-weight:800;letter-spacing:2px;color:var(--color-primary);text-transform:uppercase;margin-bottom:10px}
.section-head .sec-tag::before{content:"";width:20px;height:3px;background:var(--color-accent);border-radius:99px}
.section-head .sec-tag.white{color:#fff}
.section-head h2{font-size:clamp(2.4rem,2.6vw,3.4rem);color:var(--color-text-strong);font-weight:800;line-height:1.32;letter-spacing:-.3px}
.section-head .sec-desc{margin-top:14px;font-size:1.6rem;color:var(--color-muted);line-height:1.85}
.section-head.is-center{margin-left:auto;margin-right:auto;text-align:center}
.section-head.is-center .sec-tag{justify-content:center}

/* ---------- Path overview ---------- */
.path-section{background:var(--color-surface)}
.path-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.path-card{position:relative;background:var(--color-surface);border:1px solid var(--color-line);border-radius:20px;padding:34px 28px 30px;overflow:hidden;transition:transform .25s ease,box-shadow .25s ease;box-shadow:var(--shadow-sm)}
.path-card::before{content:"";position:absolute;left:0;top:0;width:100%;height:4px;background:linear-gradient(90deg,var(--color-primary),transparent)}
.path-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.path-card .path-index{font-size:1.35rem;font-weight:800;color:var(--color-primary);letter-spacing:1px}
.path-card .path-icon{width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:var(--color-primary-soft);color:var(--color-primary);margin:18px 0 16px}
.path-card .path-icon svg{width:24px;height:24px}
.path-card h3{font-size:2rem;color:var(--color-text-strong);font-weight:700;margin-bottom:12px}
.path-card p{font-size:1.5rem;line-height:1.85;color:var(--color-muted)}
@media(max-width:991px){.path-grid{grid-template-columns:1fr 1fr}}
@media(max-width:575px){.path-grid{grid-template-columns:1fr}}

/* ---------- Duo story ---------- */
.story-section{background:var(--color-bg);position:relative;overflow:hidden}
.story-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.story-media{position:relative}
.story-media .main-img{border-radius:22px;overflow:hidden;box-shadow:var(--shadow-lg);border:4px solid #fff}
.story-media .main-img img{width:100%;object-fit:cover;min-height:260px}
.float-tip{position:absolute;left:-16px;bottom:34px;background:var(--color-surface);border-radius:16px;box-shadow:var(--shadow-md);padding:14px 18px;display:flex;align-items:center;gap:10px;border:1px solid var(--color-line);max-width:240px}
.float-tip span.shield-ic{width:36px;height:36px;border-radius:10px;background:var(--color-accent-soft);color:var(--color-accent);display:flex;align-items:center;justify-content:center;font-size:1.4rem}
.float-tip p{font-size:1.35rem;line-height:1.5;color:var(--color-text-strong);font-weight:600}
.story-copy h2{font-size:clamp(2.4rem,2.6vw,3.4rem);font-weight:800;color:var(--color-text-strong);line-height:1.35;letter-spacing:-.3px;margin-bottom:20px}
.story-copy .highlight{color:var(--color-primary)}
.story-copy p{font-size:1.55rem;line-height:1.95;color:var(--color-text-body);margin-bottom:16px}
.check-list{list-style:none;margin-top:0;padding:0}
.check-list li{display:flex;align-items:flex-start;gap:10px;padding:10px 0;font-size:1.5rem;color:var(--color-text-body);border-bottom:1px dashed var(--color-line)}
.check-list li:last-child{border-bottom:0}
.check-list svg{width:20px;height:20px;color:#2fae72;flex-shrink:0;margin-top:4px}
@media(max-width:991px){.story-grid{grid-template-columns:1fr;gap:44px}.float-tip{left:10px;bottom:20px}}
@media(max-width:575px){.float-tip{position:relative;left:auto;bottom:auto;margin-top:16px;max-width:100%}}

/* ---------- Steps flow ---------- */
.steps-section{background:var(--color-surface);position:relative}
.steps-wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:steps}
.step-item{position:relative;background:var(--color-bg);border:1px solid var(--color-line);border-radius:18px;padding:28px 22px 24px}
.step-item .step-num{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:var(--color-primary);color:#fff;font-size:1.5rem;font-weight:800;margin-bottom:18px;box-shadow:0 6px 12px rgba(26,109,181,.25)}
.step-item h3{font-size:1.8rem;font-weight:700;color:var(--color-text-strong);margin-bottom:8px}
.step-item p{font-size:1.45rem;line-height:1.85;color:var(--color-muted)}
.step-arrow{position:absolute;top:38px;right:-10px;color:var(--color-primary);opacity:.35}
.step-arrow svg{width:16px;height:16px}
@media(max-width:991px){.steps-wrap{grid-template-columns:1fr 1fr}}
@media(max-width:575px){.steps-wrap{grid-template-columns:1fr}.step-arrow{display:none}}
/* route style supplement */
.steps-section:before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:600px;height:600px;background:radial-gradient(circle,rgba(26,109,181,.05),transparent 60%);pointer-events:none}

/* ---------- Device & Status ---------- */
.device-section{background:var(--color-bg)}
.device-grid{display:grid;grid-template-columns:230px 1fr;gap:40px;align-items:flex-start}
.device-card{background:var(--color-surface);border:1px solid var(--color-line);border-radius:20px;padding:30px;box-shadow:var(--shadow-sm)}
.device-card .device-img{border-radius:14px;overflow:hidden;margin-bottom:18px}
.device-card .device-img img{aspect-ratio:3/4;object-fit:cover;width:100%}
.device-card h3{font-size:1.6rem;font-weight:700;color:var(--color-text-strong);margin-bottom:6px}
.device-card .taglines{font-size:1.35rem;color:var(--color-muted)}
.status-panel{background:var(--color-surface);border:1px solid var(--color-line);border-radius:20px;padding:28px 32px;box-shadow:var(--shadow-sm)}
.recommend-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.recommend-item{border:1px solid var(--color-line);border-radius:16px;padding:20px 22px;background:var(--color-bg);transition:box-shadow .2s ease}
.recommend-item:hover{box-shadow:var(--shadow-sm)}
.recommend-item .recommend-tag{display:inline-flex;align-items:center;gap:7px;font-size:1.25rem;font-weight:800;color:var(--color-primary);letter-spacing:.5px;margin-bottom:10px}
.recommend-item .recommend-tag svg{width:17px;height:17px;color:var(--color-accent)}
.recommend-item h3{font-size:1.8rem;font-weight:700;color:var(--color-text-strong);margin-bottom:8px}
.recommend-item p{font-size:1.45rem;line-height:1.8;color:var(--color-muted)}
.status-list{margin-top:28px;border-top:1px solid var(--color-line);padding-top:24px;display:flex;flex-wrap:wrap;gap:20px}
.status-item{flex:1 1 160px;background:var(--color-bg);border:1px solid var(--color-line);border-radius:14px;padding:16px 18px;background:#fff}
.status-item .s-check{font-size:1.2rem;color:#237a55;font-weight:800;display:inline-flex;align-items:center;gap:6px}
.status-item .s-check::before{content:"";width:6px;height:6px;border-radius:50%;background:#2fae72}
.status-item .s-title{display:block;font-size:1.5rem;font-weight:700;color:var(--color-text-strong);margin:10px 0 4px}
.status-item .s-desc{font-size:1.3rem;color:var(--color-muted);line-height:1.6}
@media(max-width:991px){.device-grid{grid-template-columns:200px 1fr;gap:28px}}
@media(max-width:767px){.device-grid{grid-template-columns:1fr}.recommend-row{grid-template-columns:1fr}.status-panel{padding:22px}}
@media(max-width:575px){.brand-text{font-size:1.8rem}.brand-mark{width:34px;height:34px}}

/* ---------- FAQ ---------- */
.faq-section{background:var(--color-surface)}
.faq-wrap{max-width:840px;margin:0 auto}
.faq-accordion .accordion-item{border:0;background:transparent;margin-bottom:14px}
.faq-accordion .accordion-header{margin:0}
.faq-accordion .accordion-button{background:var(--color-surface);border:1px solid var(--color-line);border-radius:16px!important;box-shadow:none;padding:18px 20px;font-size:1.65rem;font-weight:600;color:var(--color-text-strong);cursor:pointer;display:flex;align-items:center;gap:12px;transition:all .2s ease}
.faq-accordion .accordion-button:hover{border-color:var(--color-primary);background:#f8fcff}
.faq-accordion .accordion-button:not(.collapsed){background:var(--color-primary-soft);border-color:var(--color-primary);color:var(--color-primary-dark)}
.faq-accordion .accordion-button:focus{box-shadow:0 0 0 3px rgba(26,109,181,.15);border-color:var(--color-primary)}
.faq-accordion .accordion-button::before{content:"Q";flex:0 0 24px;height:24px;border-radius:8px;background:var(--color-primary-soft);color:var(--color-primary);font-size:1.2rem;font-weight:800;display:flex;align-items:center;justify-content:center;line-height:1}
.faq-accordion .accordion-button:not(.collapsed)::before{background:var(--color-primary);color:#fff}
.faq-accordion .accordion-button::after{background-image:none;content:"+";font-size:2.2rem;font-weight:400;color:var(--color-primary);transition:transform .3s ease,content .1s;width:auto;height:auto;flex-shrink:0}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(225deg);color:var(--color-primary)}
.faq-accordion .accordion-body{background:#f8fbfe;border:1px solid var(--color-line);border-top:0;border-radius:0 0 16px 16px;margin-top:-4px;padding:22px 24px;font-size:1.5rem;line-height:1.9;color:var(--color-text-body)}
.faq-accordion .accordion-collapse.collapse{border-radius:16px}
@media(max-width:575px){.faq-accordion .accordion-button{align-items:flex-start}.faq-accordion .accordion-button::after{margin-left:auto}}

/* ---------- CTA strip ---------- */
.cta-strip{position:relative;background:var(--color-primary-dark);overflow:hidden;color:#fff}
.cta-strip::after{content:"";position:absolute;right:-40px;bottom:-40px;width:320px;height:320px;border-radius:50%;background:rgba(255,255,255,.1);pointer-events:none}
.cta-strip::before{content:"";position:absolute;right:100px;top:-30px;width:180px;height:180px;border-radius:50%;background:rgba(255,255,255,.04);pointer-events:none}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;padding:72px 0;gap:40px}
.cta-content h2{font-size:clamp(2.4rem,2.8vw,3.6rem);font-weight:800;line-height:1.32;margin-bottom:12px;color:#fff}
.cta-content p{max-width:520px;font-size:1.6rem;line-height:1.85;opacity:.85}
.cta-content p span{font-weight:700;color:#ffd08a}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-link{display:inline-flex;align-items:center;gap:6px;margin-top:20px;color:rgba(255,255,255,.8);font-size:1.4rem;font-weight:600;border-bottom:1px solid rgba(255,255,255,.2);padding-bottom:2px;transition:border-color .2s ease,color .2s ease}
.cta-link:hover{color:#fff;border-bottom-color:#fff}
@media(max-width:991px){.cta-inner{flex-direction:column;align-items:flex-start;padding:60px 0}}
@media(max-width:575px){.cta-strip{padding:0 4px}}

/* ---------- Footer ---------- */
.site-footer{background:var(--color-primary-dark);color:rgba(255,255,255,.7)}
.footer-top{display:grid;grid-template-columns:1.4fr .8fr 1fr;gap:52px;padding:64px 0 46px}
.footer-about p{margin-top:18px;font-size:1.45rem;line-height:1.9;color:rgba(255,255,255,.68);max-width:320px}
.footer-brand{display:inline-flex;align-items:center;gap:10px}
.footer-links h3,.footer-service h3{color:#fff;font-size:1.6rem;font-weight:700;margin-bottom:22px}
.footer-links ul,.footer-service ul{list-style:none;padding:0;margin:0}
.footer-links li,.footer-service li{margin-bottom:12px}
.footer-links a{color:rgba(255,255,255,.7);font-size:1.45rem;transition:color .2s ease,padding-left .2s ease;position:relative}
.footer-links a:hover{color:#fff;padding-left:4px}
.footer-service li{padding-left:18px;position:relative;font-size:1.45rem;line-height:1.7}
.footer-service li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--color-accent)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.13);padding:18px 0;font-size:1.3rem;color:rgba(255,255,255,.45);text-align:center}
.footer-bottom a{color:rgba(255,255,255,.8)}
.footer-bottom a:hover{color:#fff}
.brand-mark{transition:transform .2s ease}
.brand:hover .brand-mark{transform:scale(1.03)}
@media(max-width:991px){.footer-top{grid-template-columns:1fr 1fr;gap:36px 40px}.footer-about{grid-column:1/-1}}
@media(max-width:575px){.footer-top{grid-template-columns:1fr;gap:32px;padding-top:48px}.site-footer .footer-bottom{font-size:1.25rem;padding:14px 8px}}

/* focus visible reset for bootstrap */
.accordion-button:not(.collapsed)::after{filter:none}

/* roulang page: article */
:root{
  --color-bg:#F4F8FB;
  --color-surface:#FFFFFF;
  --color-primary:#1A6DB5;
  --color-primary-dark:#0E4A7E;
  --color-primary-soft:#E7F1F9;
  --color-accent:#F26B3F;
  --color-accent-dark:#E2552A;
  --color-accent-soft:#FDEEE8;
  --color-text-strong:#16283C;
  --color-text-body:#333F4E;
  --color-muted:#6C7A8A;
  --color-line:#DCE6EE;
  --shadow-sm:0 2px 8px rgba(23,65,104,.06);
  --shadow-md:0 8px 24px rgba(23,65,104,.10);
  --shadow-lg:0 20px 56px rgba(23,65,104,.16);
  --radius:16px;
  --radius-lg:22px;
  --radius-btn:999px;
  --header-h:72px;
  --container-w:1200px;
  --space-section:clamp(56px,7vw,96px);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:62.5%;scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei UI","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  background:var(--color-bg);
  color:var(--color-text-body);
  font-size:1.6rem;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  padding-bottom:68px;
}
body.page-article{padding-bottom:0}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s,background-color .2s,border-color .2s,box-shadow .2s,transform .2s}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{list-style:none}
h1,h2,h3,h4,h5{color:var(--color-text-strong);line-height:1.3;font-weight:700}
h1{font-size:clamp(2.6rem,3.6vw,3.6rem)}
h2{font-size:clamp(2rem,2.6vw,2.6rem)}
h3{font-size:1.9rem}
.container-main{width:100%;max-width:var(--container-w);margin:0 auto;padding-left:clamp(16px,3vw,32px);padding-right:clamp(16px,3vw,32px)}
.site-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:10px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;line-height:1.2;text-align:center;border:1px solid transparent;
  transition:all .25s ease;white-space:nowrap;cursor:pointer;
}
.site-btn:focus-visible{outline:3px solid rgba(26,109,181,.25);outline-offset:2px}
.site-btn--accent{background:var(--color-accent);border-color:var(--color-accent);color:#fff}
.site-btn--accent:hover{background:var(--color-accent-dark);border-color:var(--color-accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 30px rgba(242,107,63,.28)}
.site-btn--primary{background:var(--color-primary);border-color:var(--color-primary);color:#fff}
.site-btn--primary:hover{background:var(--color-primary-dark);border-color:var(--color-primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 30px rgba(26,109,181,.28)}
.site-btn--ghost{background:transparent;border-color:var(--color-line);color:var(--color-text-strong)}
.site-btn--ghost:hover{background:var(--color-primary-soft);border-color:var(--color-primary);color:var(--color-primary)}

/* header */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.site-header.scrolled{
  background:rgba(255,255,255,.95);
  border-bottom-color:var(--color-line);
  box-shadow:0 6px 24px rgba(23,65,104,.06);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--color-text-strong);text-decoration:none}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;
  background:var(--color-primary);color:#fff;
  flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px}
.brand-text{font-size:2rem;font-weight:800;letter-spacing:-.4px;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--color-accent);font-weight:900}
.header-nav-main{margin-left:auto;display:flex;align-items:center}
.nav-list{display:flex;align-items:center;gap:clamp(18px,2.4vw,38px)}
.nav-list a{
  position:relative;color:var(--color-text-body);font-size:15px;font-weight:600;
  padding:6px 2px;text-decoration:none;
}
.nav-list a::after{
  content:'';position:absolute;left:0;right:100%;bottom:-2px;height:3px;
  border-radius:3px;background:var(--color-primary);
  transition:right .25s ease;
}
.nav-list a:hover{color:var(--color-primary)}
.nav-list a:hover::after{right:0}
.nav-list a.active{color:var(--color-primary)}
.nav-list a.active::after{right:0}
.header-cta{margin-left:8px;display:flex;align-items:center}
@media (max-width:991.98px){
  .header-nav-main,.header-cta{display:none}
  .site-header .header-inner{justify-content:center}
}

/* mobile bottom tab */
.mobile-bottom-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:1200;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-top:1px solid var(--color-line);
  box-shadow:0 -6px 24px rgba(23,65,104,.05);
  padding-bottom:env(safe-area-inset-bottom);
  display:none;
}
.mobile-bottom-tab .tab-list{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;padding:6px 6px 4px}
.mobile-bottom-tab .tab-link{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  min-height:56px;padding:6px 2px;border-radius:14px;gap:3px;
  color:var(--color-muted);text-decoration:none;font-size:11px;font-weight:700;
  transition:all .2s ease;
}
.mobile-bottom-tab .tab-link svg{width:22px;height:22px;stroke-width:1.8}
.mobile-bottom-tab .tab-link:hover{background:var(--color-primary-soft);color:var(--color-primary)}
.mobile-bottom-tab .tab-link.active{background:var(--color-primary-soft);color:var(--color-primary)}
@media (max-width:991.98px){
  .mobile-bottom-tab{display:block}
  body{padding-bottom:68px}
  body.page-article{padding-bottom:68px}
}

/* breadcrumb */
.breadcrumb-bar{
  background:var(--color-surface);
  border-bottom:1px solid var(--color-line);
  padding:12px 0;
  font-size:13px;
  color:var(--color-muted);
}
.breadcrumb-bar .container-main{display:flex;align-items:center;flex-wrap:wrap;gap:8px}
.breadcrumb-bar a{color:var(--color-primary);font-weight:600}
.breadcrumb-bar a:hover{color:var(--color-primary-dark)}
.breadcrumb-bar .sep{color:#B7C3D0;font-size:12px}
.breadcrumb-bar .crumb-current{max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--color-text-strong)}

/* article wrap */
.article-section{padding:clamp(32px,5vw,64px) 0 var(--space-section)}
.article-shell{max-width:880px;margin:0 auto}
.article-card{
  background:var(--color-surface);
  border:1px solid var(--color-line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  padding:clamp(28px,5vw,64px) clamp(20px,4vw,52px) clamp(36px,5vw,64px);
  transition:box-shadow .3s ease;
}
.article-head{margin-bottom:34px}
.article-head .eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--color-primary-soft);color:var(--color-primary);
  font-size:12px;font-weight:800;
  padding:5px 14px;border-radius:999px;margin-bottom:16px;
}
.article-head h1{margin:0 0 20px;letter-spacing:-.4px;line-height:1.3;overflow-wrap:break-word}
.article-meta{
  display:flex;flex-wrap:wrap;gap:10px 22px;
  padding:16px 0;border-top:1px solid var(--color-line);
  color:var(--color-muted);font-size:14px;
}
.am-item{display:inline-flex;align-items:center;gap:8px}
.am-item svg{width:16px;height:16px;color:var(--color-primary);stroke-width:1.8;flex:0 0 auto}

/* article content typography */
.article-content{margin-top:34px;font-size:16px;line-height:1.95;color:var(--color-text-body)}
.article-content>:first-child{margin-top:0}
.article-content p{margin:0 0 1.8em}
.article-content h2{
  font-size:2.2rem;margin:2.4em 0 1em;padding-left:16px;
  border-left:4px solid var(--color-primary);border-radius:2px;
}
.article-content h3{font-size:1.85rem;margin:2em 0 .9em}
.article-content h4{font-size:1.6rem;margin:1.8em 0 .8em;color:var(--color-text-strong)}
.article-content ul,.article-content ol{margin:0 0 1.8em;padding-left:1.4em}
.article-content ul{list-style:disc}
.article-content ol{list-style:decimal}
.article-content li{margin-bottom:.6em;padding-left:.2em}
.article-content a{color:var(--color-primary);font-weight:600;text-decoration:underline;text-underline-offset:3px}
.article-content a:hover{color:var(--color-primary-dark)}
.article-content img{
  border-radius:14px;margin:2.8rem auto;
  box-shadow:0 8px 28px rgba(23,65,104,.1);
}
.article-content blockquote{
  background:var(--color-primary-soft);
  border-left:4px solid var(--color-primary);
  padding:18px 22px;margin:0 0 1.8em;
  font-size:15px;color:var(--color-text-body);
  border-radius:0 14px 14px 0;
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content table{
  width:100%;margin:2rem 0;border-collapse:collapse;
  font-size:14px;
  background:var(--color-surface);
  border:1px solid var(--color-line);
  border-radius:12px;overflow:hidden;
}
.article-content th,.article-content td{
  border:1px solid var(--color-line);
  padding:12px 14px;text-align:left;vertical-align:top;
}
.article-content th{background:var(--color-primary-soft);font-weight:700;color:var(--color-text-strong)}
.article-content pre{
  background:#102B40;color:#E7F1F9;border-radius:14px;
  padding:20px 22px;margin:2rem 0;overflow-x:auto;
  font-size:14px;line-height:1.7;
}
.article-content code{
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  background:var(--color-primary-soft);color:var(--color-primary-dark);
  padding:2px 7px;border-radius:7px;font-size:14px;
}
.article-content pre code{background:transparent;color:#E7F1F9;padding:0}

/* article copyright */
.article-copyright{
  margin-top:44px;padding:16px 20px;
  background:#F7FAFD;border:1px dashed #C9DBE9;
  border-radius:14px;font-size:13px;color:var(--color-muted);
  display:flex;gap:10px;align-items:flex-start;line-height:1.8;
}
.article-copyright svg{width:18px;height:18px;color:var(--color-primary);flex:0 0 auto;margin-top:2px}

/* related */
.related-section{padding:0 0 var(--space-section)}
.section-title-wrap{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin-bottom:26px;
}
.section-title-wrap h2{
  display:inline-flex;align-items:center;gap:14px;font-size:clamp(2rem,2.6vw,2.6rem);margin:0;
}
.section-title-wrap h2::before{
  content:'';display:block;width:5px;height:24px;border-radius:5px;background:var(--color-primary);
}
.related-link-more{font-size:14px;font-weight:700;color:var(--color-primary)}
.related-link-more:hover{color:var(--color-primary-dark)}
.related-card{
  background:var(--color-surface);
  border:1px solid var(--color-line);
  border-radius:var(--radius);
  overflow:hidden;
  height:100%;
  box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#BBD3E8}
.related-card .rc-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--color-primary-soft)}
.related-card .rc-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.related-card:hover .rc-thumb img{transform:scale(1.04)}
.related-card .rc-body{padding:20px 20px 24px;flex:1;display:flex;flex-direction:column}
.related-card .rc-tag{
  display:inline-block;width:fit-content;background:var(--color-primary-soft);
  color:var(--color-primary);font-size:12px;font-weight:800;
  padding:4px 12px;border-radius:999px;margin-bottom:12px;
}
.related-card h3{font-size:17px;line-height:1.5;margin:0 0 8px}
.related-card p{font-size:14px;color:var(--color-muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0 0 14px}
.related-card .rc-more{margin-top:auto;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--color-primary)}
.related-card .rc-more svg{width:14px;height:14px;transition:transform .25s ease}
.related-card:hover .rc-more svg{transform:translateX(4px)}

/* article cta */
.article-cta{padding:0 0 var(--space-section)}
.article-cta .cta-box{
  background:linear-gradient(135deg,#0E4A7E 0%,#1A6DB5 100%);
  border-radius:var(--radius-lg);
  padding:clamp(28px,5vw,56px) clamp(24px,5vw,64px);
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:0 18px 48px rgba(14,74,126,.20);
  position:relative;overflow:hidden;
}
.article-cta .cta-box::after{
  content:'';position:absolute;right:-80px;bottom:-80px;width:260px;height:260px;
  border-radius:50%;background:rgba(255,255,255,.06);
}
.article-cta .cta-content{position:relative;z-index:1;max-width:640px}
.article-cta h2{color:#fff;font-size:clamp(2rem,3vw,2.8rem);margin:0 0 14px}
.article-cta p{color:rgba(255,255,255,.88);font-size:15px;line-height:1.8;margin:0}
.article-cta .cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1;flex:0 0 auto}

/* missing */
.article-missing{
  background:var(--color-surface);border:1px dashed #C9DBE9;
  border-radius:var(--radius-lg);padding:60px 32px;text-align:center;
  box-shadow:var(--shadow-sm);
}
.missing-icon{
  width:72px;height:72px;border-radius:50%;
  background:var(--color-primary-soft);color:var(--color-primary);
  display:inline-flex;align-items:center;justify-content:center;
  margin:0 auto 04px;
}
.missing-icon svg{width:32px;height:32px}
.article-missing h2{font-size:2.6rem;margin:18px 0 12px}
.article-missing p{color:var(--color-muted);margin:0 0 28px}

/* footer */
.site-footer{
  background:var(--color-primary-dark);
  color:rgba(255,255,255,.78);
  padding:clamp(48px,6vw,72px) 0 0;
  margin-top:0;
}
.site-footer .container-main{}
.footer-top{
  display:grid;grid-template-columns:1.4fr .8fr 1fr;
  gap:clamp(28px,5vw,72px);
  padding-bottom:48px;
}
.footer-about p{font-size:14px;line-height:1.9;margin:14px 0 0;max-width:420px;color:rgba(255,255,255,.7)}
.footer-brand{display:inline-flex;align-items:center;gap:10px}
.footer-links h3,.footer-service h3{
  color:#fff;font-size:16px;margin-bottom:18px;font-weight:700;
}
.footer-links ul,.footer-service ul{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px;text-decoration:none;transition:color .2s}
.footer-links a:hover{color:#fff;padding-left:3px}
.footer-service li{font-size:14px;color:rgba(255,255,255,.72);line-height:1.6;display:flex;align-items:center;gap:8px}
.footer-service li::before{content:'';display:block;width:5px;height:5px;border-radius:50%;background:var(--color-accent);flex:0 0 auto}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0;
  font-size:13px;color:rgba(255,255,255,.62);
  display:flex;align-items:center;justify-content:center;text-align:center;
}
@media (max-width:991.98px){
  .footer-top{grid-template-columns:1fr;gap:32px}
}
@media (max-width:767.98px){
  .footer-top{grid-template-columns:1fr}
  .site-btn{min-height:44px;padding:9px 20px;font-size:14px}
}
@media (max-width:575.98px){
  body{font-size:15px}
  .header-cta{display:none}
  .header-inner{justify-content:center}
  .article-head{margin-bottom:24px}
  .article-meta{gap:8px 14px}
  .cta-box{flex-direction:column;align-items:flex-start;text-align:left;padding:28px}
  .cta-actions .site-btn{width:100%;justify-content:center}
  .article-cta .cta-box{flex-direction:column}
  .article-cta .cta-actions{width:100%;flex-direction:column}
  .related-link-more{display:none}
  .footer-bottom{flex-direction:column;gap:6px}
}

/* roulang page: category3 */
:root{
  --color-bg:#F4F8FB;
  --color-surface:#FFFFFF;
  --color-primary:#1A6DB5;
  --color-primary-dark:#0E4A7E;
  --color-primary-soft:#E7F1F9;
  --color-accent:#F26B3F;
  --color-accent-soft:#FDEEE8;
  --color-text-strong:#16283C;
  --color-text-body:#333F4E;
  --color-muted:#6C7A8A;
  --color-line:#DCE6EE;
  --shadow-sm:0 2px 8px rgba(23,65,104,.06);
  --shadow-md:0 8px 24px rgba(23,65,104,.10);
  --shadow-lg:0 20px 56px rgba(23,65,104,.14);
  --font-family:"PingFang SC","Microsoft YaHei UI","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --radius-card:16px;
  --radius-btn:999px;
}
html{font-size:62.5%;scroll-behavior:smooth}
body{
  font-family:var(--font-family);
  font-size:1.6rem;
  line-height:1.7;
  background:var(--color-bg);
  color:var(--color-text-body);
  min-height:100vh;
  padding-bottom:68px;
}
@media(min-width:992px){
  body{padding-bottom:0}
}
*{box-sizing:border-box}
img{max-width:100%;display:block;border-radius:14px}
a{color:inherit;text-decoration:none}
button{font-family:inherit;outline:none}
.container-main{max-width:1200px;margin:0 auto;padding-left:2.4rem;padding-right:2.4rem}
@media(max-width:768px){.container-main{padding-left:1.6rem;padding-right:1.6rem}}
.site-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.8rem;
  font-size:1.5rem;line-height:1;font-weight:700;letter-spacing:.02em;
  padding:1.1rem 2.6rem;border-radius:var(--radius-btn);
  border:2px solid transparent;transition:all .25s ease;cursor:pointer;min-height:44px;white-space:nowrap;
}
.site-btn--primary{background:var(--color-primary);color:#fff}
.site-btn--primary:hover{background:var(--color-primary-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}
.site-btn--accent{background:var(--color-accent);color:#fff}
.site-btn--accent:hover{background:#d95728;color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px rgba(242,107,63,.28)}
.site-btn--ghost{background:rgba(255,255,255,.7);color:var(--color-primary-dark);border-color:rgba(26,109,181,.35);backdrop-filter:blur(6px)}
.site-btn--ghost:hover{background:var(--color-primary-soft);color:var(--color-primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.site-btn--light{background:#fff;color:var(--color-primary-dark)}
.site-btn--light:hover{background:var(--color-primary-soft);color:var(--color-primary-dark)}
.site-btn:focus-visible,.site-btn:focus{outline:3px solid rgba(26,109,181,.25);outline-offset:2px}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:1050;
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(220,230,238,.8);
  transition:box-shadow .3s ease, background .3s ease, border-color .3s ease;
}
.site-header.scrolled{box-shadow:0 8px 28px rgba(23,65,104,.08);border-bottom-color:transparent}
.site-header .header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;gap:2rem;
}
.brand{display:inline-flex;align-items:center;gap:.8rem;flex-shrink:0;min-height:44px}
.brand-mark{
  width:42px;height:42px;background:var(--color-primary);color:#fff;
  border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-sm);
}
.brand-mark svg{width:23px;height:23px}
.brand-text{font-weight:900;font-size:2rem;color:var(--color-text-strong);letter-spacing:.02em;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--color-accent);font-weight:900}
.header-nav-main{margin-left:auto;display:none}
.header-nav-main .nav-list{display:flex;align-items:center;gap:3.6rem}
.header-nav-main .nav-list a{
  display:block;position:relative;font-weight:600;font-size:1.55rem;color:var(--color-text-body);
  padding:1.6rem .2rem;transition:color .25s ease;
}
.header-nav-main .nav-list a::after{
  content:"";position:absolute;left:50%;bottom:.6rem;transform:translateX(-50%);
  width:0;height:2px;border-radius:2px;background:var(--color-primary);
  transition:width .25s ease;
}
.header-nav-main .nav-list a:hover{color:var(--color-primary)}
.header-nav-main .nav-list a.active{color:var(--color-primary)}
.header-nav-main .nav-list a.active::after{width:24px}
.header-cta{display:none}
@media(min-width:768px){
  .header-nav-main{display:block}
  .header-cta{display:block}
}
.site-header #hamburgerBtn{width:44px;height:44px;border:0;background:transparent;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;color:var(--color-text-strong)}
.site-header #hamburgerBtn svg{width:23px;height:23px}
@media(min-width:992px){
  .site-header #hamburgerBtn{display:none}
}

/* ===== mobile drawer ===== */
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(80vw,300px);z-index:2000;
  background:#fff;box-shadow:var(--shadow-lg);transform:translateX(100%);
  transition:transform .32s ease;padding:3rem 2rem;display:flex;flex-direction:column;gap:1.5rem;
}
.mobile-drawer.show{transform:translateX(0)}
.mobile-drawer .drawer-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.2rem}
.mobile-drawer a{font-weight:600;font-size:1.8rem;color:var(--color-text-strong);padding:1.2rem 0;border-bottom:1px solid var(--color-line)}
.mobile-drawer a.active{color:var(--color-primary)}
.drawer-backdrop{position:fixed;inset:0;background:rgba(19,40,64,.4);backdrop-filter:blur(3px);z-index:1055;opacity:0;visibility:hidden;transition:opacity .3s ease}
.drawer-backdrop.show{opacity:1;visibility:visible}

/* ===== Bootom Tab ===== */
.bottom-tab-nav{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  background:rgba(255,255,255,.96);
  border-top:1px solid var(--color-line);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  padding:8px 8px calc(8px + env(safe-area-inset-bottom));
  display:flex;align-items:center;justify-content:space-around;
}
@media(min-width:768px){
  .bottom-tab-nav{display:none}
}
.mobile-tab{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  min-height:48px;min-width:56px;border-radius:12px;transition:color .2s ease,background .2s ease;padding:2px 6px;
  font-size:11px;font-weight:600;color:var(--color-muted);
}
.mobile-tab svg{width:20px;height:20px}
.mobile-tab:hover{color:var(--color-primary);background:var(--color-primary-soft)}
.mobile-tab.active{color:var(--color-primary);background:var(--color-primary-soft)}
.mobile-tab span{line-height:1.2}
.content-bottom-space{height:76px}
@media(min-width:768px){.content-bottom-space{display:none}}

/* ===== Hero / 页头 ===== */
.page-hero{
  position:relative;overflow:hidden;
  background:
    linear-gradient(120deg, rgba(23,65,104,.06) 0%, rgba(231,241,249,.5) 50%, rgba(244,248,251,0) 100%),
    var(--color-surface);
  padding:60px 0 70px;
}
.page-hero.__path-visual::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='280' height='280' viewBox='0 0 180 180'%3E%3Cg fill='none' stroke='%231A6DB5' stroke-opacity='0.08'%3E%3Cpath d='M30 0v180M75 0v180M120 0v180M0 30h180M0 75h180M0 120h180M0 165h180'/%3E%3Ccircle cx='30' cy='75' r='3'/%3E%3Ccircle cx='120' cy='120' r='2.4'/%3E%3Ccircle cx='75' cy='30' r='1.8'/%3E%3C/g%3E%3C/svg%3E") repeat;
  opacity:.5;
}
.page-hero .container-main{position:relative;z-index:1}
.hero-breadcrumb{
  display:flex;align-items:center;gap:6px;font-size:1.35rem;color:var(--color-muted);margin-bottom:22px;flex-wrap:wrap;
}
.hero-breadcrumb a{color:var(--color-primary)}
.hero-breadcrumb .hero-sep{color:var(--color-line)}
.page-title-article{
  font-size:clamp(3rem,4.2vw,4.8rem);font-weight:900;line-height:1.24;
  color:var(--color-text-strong);font-variant-numeric:tabular-nums;margin-bottom:18px;
}
.page-title-article span{color:var(--color-accent)}
.hero-deco-line{display:flex;align-items:center;gap:1rem;margin-bottom:2rem;color:var(--color-primary)}
.hero-deco-line svg{width:26px;height:26px}
.hero-desc{
  font-size:clamp(1.5rem,1.7vw,1.75rem);line-height:1.8;color:var(--color-text-body);
  max-width:800px;margin-bottom:2.8rem;
}
.hero-actions{display:flex;flex-direction:column;gap:1.4rem;flex-wrap:wrap}
@media(min-width:576px){.hero-actions{flex-direction:row}}

/* ===== Section Common ===== */
.section-block{padding:64px 0}
@media(min-width:992px){.section-block{padding:96px 0}}
.section-head{margin-bottom:38px}
.section-head .section-eyebrow{
  display:flex;align-items:center;gap:.8rem;color:var(--color-primary);
  font-size:1.5rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;margin-bottom:1.2rem;
}
.section-head .section-eyebrow svg{width:22px;height:22px}
.section-title{
  font-size:clamp(2.4rem,2.8vw,3.4rem);font-weight:900;color:var(--color-text-strong);
  position:relative;padding-left:1.6rem;line-height:1.3;
}
.section-title::before{content:"";position:absolute;left:0;top:.4rem;bottom:.4rem;width:5px;border-radius:4px;background:var(--color-primary)}
.section-desc{
  max-width:800px;font-size:1.55rem;line-height:1.8;color:var(--color-muted);margin-top:1.2rem;
}

/* ===== 状态条 ===== */
.run-status-card{
  background:var(--color-surface);border:1px solid var(--color-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);padding:3rem 3rem 2.6rem;height:100%;
}
@media(max-width:991px){.run-status-card{margin-bottom:2rem}}
.status-title{font-size:1.7rem;font-weight:800;color:var(--color-text-strong);display:flex;align-items:center;gap:.8rem;margin-bottom:1.6rem}
.status-dot{width:9px;height:9px;border-radius:50%;display:inline-block;background:var(--color-primary);box-shadow:0 0 0 4px rgba(26,109,181,.15)}
.status-dot.dot-warm{background:var(--color-accent);box-shadow:0 0 0 4px rgba(242,107,63,.14)}
.status-item{display:flex;justify-content:space-between;align-items:center;padding:9px 0;border-bottom:1px dashed var(--color-line);font-size:1.4rem}
.status-item:last-child{border-bottom:0}
.status-meta{display:flex;align-items:center;gap:.6rem;color:var(--color-muted)}
.status-tag{background:var(--color-primary-soft);color:var(--color-primary);font-weight:600;font-size:1.22rem;padding:.3rem 1rem;border-radius:999px}
.status-tag.orange-tag{background:var(--color-accent-soft);color:var(--color-accent)}
.upgrade-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:1.6rem;margin-top:1.8rem}
.stat-num{font-weight:900;font-size:clamp(2rem,2.6vw,3rem);color:var(--color-text-strong);font-variant-numeric:tabular-nums}
.stat-label{font-size:1.25rem;color:var(--color-muted)}

/* ===== timeline ===== */
.column-timeline{
  display:grid;grid-template-columns:1fr;gap:2.4rem;
}
@media(min-width:768px){
  .column-timeline{grid-template-columns:1fr 1fr}
}
.timeline-item{
  background:var(--color-surface);border:1px solid var(--color-line);border-radius:18px;
  padding:2.6rem 2.6rem 2.2rem;position:relative;height:100%;box-shadow:var(--shadow-sm);
  transition:transform .25s ease, box-shadow .25s ease;
}
.timeline-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.timeline-date{
  display:inline-flex;align-items:center;gap:.6rem;background:var(--color-primary-soft);color:var(--color-primary);
  border-radius:999px;padding:.5rem 1.2rem;font-weight:700;font-size:1.25rem;margin-bottom:1.6rem;
}
.timeline-item h3{font-size:1.95rem;font-weight:800;color:var(--color-text-strong);margin-bottom:.8rem}
.timeline-remark{font-size:1.45rem;line-height:1.75;color:var(--color-text-body);margin-bottom:.8rem}
.tag-line{display:flex;flex-wrap:wrap;gap:.8rem}
.badge-soft{display:inline-flex;align-items:center;gap:.4rem;background:var(--color-bg);border:1px solid var(--color-line);border-radius:999px;padding:.3rem 1.1rem;font-size:1.24rem;color:var(--color-muted);font-weight:600}
.badge-soft::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--color-primary)}

/* ===== announcement list ===== */
.announcement-section{
  position:relative;
  background:linear-gradient(120deg, rgba(231,241,249,.5), rgba(255,255,255,0) 70%), var(--color-surface);
  border-top:1px solid var(--color-line);
  border-bottom:1px solid var(--color-line);
}
.modern-list-wrap{background:var(--color-surface);border-radius:20px;box-shadow:var(--shadow-sm);overflow:hidden}
.news-item-card{
  display:flex;flex-direction:column;padding:2.4rem 2.6rem;border-bottom:1px solid var(--color-line);
  transition:background .2s ease, transform .2s ease;
}
.news-item-card:last-child{border-bottom:0}
.news-item-card:hover{background:var(--color-primary-soft);transform:translateX(3px)}
@media(min-width:768px){
  .news-item-card{flex-direction:row;align-items:center;gap:2.4rem}
}
.news-cat-pill{
  flex-shrink:0;background:var(--color-primary);color:#fff;font-size:1.3rem;font-weight:700;
  padding:.5rem 1.5rem;border-radius:999px;display:inline-flex;width:fit-content;margin-bottom:1rem;
}
@media(min-width:768px){.news-cat-pill{margin-bottom:0;min-width:112px;justify-content:center}}
.news-main{flex:1;min-width:0}
.news-main h3{font-size:1.85rem;font-weight:800;color:var(--color-text-strong);margin-bottom:.4rem;line-height:1.4}
.news-main p{font-size:1.4rem;color:var(--color-muted);line-height:1.7;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{
  flex-shrink:0;display:flex;align-items:center;gap:1.2rem;color:var(--color-muted);
  font-size:1.35rem;margin-top:1.2rem;
}
@media(min-width:768px){
  .news-meta{flex-direction:row;margin-top:0;gap:1.8rem;min-width:155px;justify-content:flex-end}
}
.news-time{display:inline-flex;align-items:center;gap:.4rem;font-variant-numeric:tabular-nums}
.news-time svg{width:16px;height:16px}
.round-arrow{width:32px;height:32px;border-radius:50%;background:var(--color-bg);border:1px solid var(--color-line);display:inline-flex;align-items:center;justify-content:center;color:var(--color-primary)}
.round-arrow svg{width:16px;height:16px}

/* ===== knowledge directory ===== */
.path-feature-block{background:var(--color-surface);border:1px solid var(--color-line);border-radius:24px;padding:4rem 3.4rem;box-shadow:var(--shadow-sm)}
@media(min-width:768px){.path-feature-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:4rem;align-items:center}}
.feature-list-icon{width:60px;height:60px;background:var(--color-primary-soft);border-radius:18px;color:var(--color-primary);display:inline-flex;align-items:center;justify-content:center;margin-bottom:1.8rem}
.feature-list-icon svg{width:28px;height:28px}
.left-feature-title{font-size:2rem;font-weight:900;color:var(--color-text-strong);margin-bottom:1.2rem;line-height:1.4}
.leaf-desc{font-size:1.48rem;line-height:1.8;color:var(--color-muted);margin-bottom:2.4rem;max-width:70rem}
.data-walk-list{list-style:none;margin:2rem 0;padding:0;display:grid;gap:1.2rem}
.data-walk-list li{display:flex;gap:1.1rem;font-size:1.45rem}
.data-walk-list svg{color:var(--color-accent);flex-shrink:0;width:20px;height:20px;margin-top:.3rem}
.cover-compact{height:260px;border-radius:22px;position:relative;overflow:hidden;box-shadow:var(--shadow-md)}
.cover-compact img{width:100%;height:100%;object-fit:cover}
.cover-compact .cover-tip{
  position:absolute;left:1.6rem;bottom:1.6rem;background:rgba(255,255,255,.9);backdrop-filter:blur(6px);
  border-radius:12px;padding:1rem 1.5rem;font-size:1.35rem;font-weight:600;color:var(--color-text-strong);
  box-shadow:var(--shadow-sm);max-width:220px;
}

/* ===== FAQ ===== */
.faq-block{
  background:linear-gradient(120deg, rgba(231,241,249,.4), rgba(255,255,255,.5));
}
.accordion-custom{
  border-radius:22px;overflow:hidden;box-shadow:var(--shadow-sm);
}
.accordion-custom .accordion-item{
  border:0;background:var(--color-surface);border-bottom:1px solid var(--color-line);
}
.accordion-custom .accordion-button{
  display:flex;align-items:center;gap:1.2rem;
  padding:2.2rem 2.6rem;font-size:1.66rem;font-weight:800;color:var(--color-text-strong);
  background:transparent;box-shadow:none;
}
.accordion-custom .accordion-button:not(.collapsed){color:var(--color-primary);background:var(--color-primary-soft)}
.accordion-custom .accordion-button:focus{box-shadow:none;border-color:transparent;outline:3px solid rgba(26,109,181,.3)}
.accordion-btn-icon{
  width:34px;height:34px;border-radius:50%;background:#fff;border:1px solid var(--color-line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--color-muted);flex-shrink:0;
  transition:all .25s ease;font-size:1.4rem;
}
.accordion-custom .accordion-button:not(.collapsed) .accordion-btn-icon{background:var(--color-primary);color:#fff;border-color:var(--color-primary);transform:rotate(180deg)}
.accordion-custom .accordion-body{padding:.4rem 6.2rem 2.2rem 6.2rem;font-size:1.5rem;line-height:1.85;color:var(--color-text-body);background:#fff}

/* ===== CTA ===== */
.cta-area{
  background:linear-gradient(135deg, #0E4A7E 0%, #1A6DB5 68%, #1f7cc4 100%);
  padding:70px 0;position:relative;overflow:hidden;
}
.cta-area::after{
  content:"";position:absolute;right:-80px;bottom:-80px;width:300px;height:300px;border-radius:50%;
  border:50px solid rgba(255,255,255,.07);
}
.cta-content{z-index:1;position:relative;text-align:center}
.cta-title{font-size:clamp(2.6rem,3vw,3.7rem);font-weight:900;color:#fff;margin-bottom:1rem;letter-spacing:.02em}
.cta-sub{color:rgba(255,255,255,.86);font-size:1.7rem;max-width:760px;line-height:1.8;margin:0 auto 2.8rem}
.cta-btn-row{display:flex;flex-wrap:wrap;justify-content:center;gap:1.5rem}
.cta-quick-tip{display:flex;justify-content:center;align-items:center;gap:.6rem;font-size:1.3rem;color:rgba(255,255,255,.72);margin-top:2rem}
.cta-quick-tip svg{width:18px;height:18px}

/* ===== Footer ===== */
.site-footer{background:var(--footer-bg,#102B40);color:rgba(255,255,255,.78);margin-top:0}
.site-footer a{color:rgba(255,255,255,.9)}
.footer-top{display:grid;grid-template-columns:1fr;gap:3.2rem;padding:54px 0 34px}
@media(min-width:768px){.footer-top{grid-template-columns:1.5fr .8fr 1fr}}
.footer-brand{display:flex;align-items:center;gap:1rem;margin-bottom:1.5rem}
.footer-about p{font-size:1.4rem;line-height:1.8;max-width:38rem;margin:0}
.footer-links h3,.footer-service h3{color:#fff;font-size:1.6rem;font-weight:800;margin-bottom:1.5rem}
.footer-links ul,.footer-service ul{list-style:none;margin:0;padding:0;display:grid;gap:1.1rem}
.footer-links li a{font-size:1.4rem;transition:color .2s ease, padding-left .2s ease}
.footer-links li a:hover{color:var(--color-accent);padding-left:4px}
.footer-service li{font-size:1.4rem;display:flex;align-items:center;gap:.6rem}
.footer-service li::before{content:"";width:5px;height:5px;background:var(--color-accent);border-radius:50%}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:2rem 0;display:flex;
  align-items:center;justify-content:center;gap:.8rem;flex-wrap:wrap;
  font-size:1.28rem;color:rgba(255,255,255,.65);
}
.footer-bottom span{font-variant-numeric:tabular-nums}

/* ===== responsive extra ===== */
@media(min-width:992px){
  .header-right-ext{display:flex;align-items:center;gap:2rem;margin-left:auto}
}
@media(max-width:991px){
  .header-nav-main{display:none!important}
  .header-cta{display:none!important}
  .header-inner{height:64px}
  .brand-mark{width:36px;height:36px}
  .brand-text{font-size:1.8rem}
  .page-hero{padding:40px 0 52px}
  .section-head{margin-bottom:28px}
}
@media(max-width:575px){
  .section-block{padding:56px 0}
  .timeline-item{padding:2.2rem 2rem}
  .news-item-card{padding:2rem 2rem}
  .path-feature-block{padding:3rem 2rem}
  .accordion-custom .accordion-button{padding:1.8rem 1.8rem;font-size:1.55rem}
  .accordion-custom .accordion-body{padding:.4rem 5rem 2rem 5rem}
  .footer-top{padding:34px 0 20px}
}

/* roulang page: category2 */
:root{
  --color-bg:#F4F8FB;
  --color-surface:#FFFFFF;
  --color-primary:#1A6DB5;
  --color-primary-dark:#0E4A7E;
  --color-primary-soft:#E7F1F9;
  --color-accent:#F26B3F;
  --color-accent-soft:#FDEEE8;
  --color-text-strong:#16283C;
  --color-text-body:#333F4E;
  --color-muted:#6C7A8A;
  --color-line:#DCE6EE;
  --shadow-sm:0 2px 8px rgba(23,65,104,.06);
  --shadow-md:0 8px 24px rgba(23,65,104,.10);
  --shadow-lg:0 20px 56px rgba(23,65,104,.14);
  --radius-card:16px;
  --radius-btn:999px;
  --header-h:74px;
  --content-bottom-space:78px;
}
*{box-sizing:border-box}
html{font-size:62.5%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei UI","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  font-size:1.5rem;
  line-height:1.8;
  background:var(--color-bg);
  color:var(--color-text-body);
  -webkit-font-smoothing:antialiased;
}
.container-main{
  max-width:1200px;
  margin:0 auto;
  padding:0 2.4rem;
  width:100%;
}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:color .25s ease}
ul,p,h1,h2,h3,h4,figure{margin:0;padding:0}
h1,h2,h3,h4{color:var(--color-text-strong);font-weight:700;line-height:1.3}
h2{font-size:clamp(2.4rem,2.6vw,3.4rem)}
h3{font-size:1.8rem;font-weight:600}
button,input,textarea{font-family:inherit}
svg{width:1em;height:1em;vertical-align:middle}
:focus-visible{outline:3px solid rgba(26,109,181,.25);outline-offset:2px;border-radius:6px}
.skip-link{position:absolute;left:-999px;z-index:1090;background:var(--color-primary-dark);color:#fff;padding:1rem 1.6rem;border-radius:10px}
.skip-link:focus{left:1.2rem;top:1.2rem}
body{padding-bottom:var(--content-bottom-space)}
@media(min-width:992px){body{padding-bottom:0}}

/* Header */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1080;
  min-height:var(--header-h);
  background:rgba(255,255,255,.78);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(220,230,238,.6);
  transition:background .35s ease,box-shadow .35s ease;
}
.site-header.scrolled{
  background:rgba(255,255,255,.95);
  box-shadow:var(--shadow-sm);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  min-height:var(--header-h);
  gap:2rem;
}
.brand{
  display:inline-flex;align-items:center;gap:.8rem;
  flex-shrink:0;
}
.brand-mark{
  width:3.4rem;height:3.4rem;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--color-primary);
  color:#fff;font-size:2rem;line-height:1;
}
.brand-text{
  font-weight:800;color:var(--color-text-strong);
  font-size:clamp(1.65rem,2vw,2rem);
  letter-spacing:-.02em;white-space:nowrap;
}
.brand-text em{
  font-style:normal;
  background:linear-gradient(90deg,var(--color-primary),var(--color-primary-dark));
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  font-weight:800;
}
.header-nav-main .nav-list{
  display:flex;align-items:center;gap:4rem;list-style:none;margin:0;padding:0;
}
.header-nav-main a{
  display:block;
  font-size:1.55rem;color:var(--color-text-body);
  letter-spacing:.01em;padding:.8rem .2rem;
  position:relative;font-weight:500;
}
.header-nav-main a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--color-primary);border-radius:2px;transition:width .25s ease;
}
.header-nav-main a:hover,.header-nav-main a.active{
  color:var(--color-primary);
}
.header-nav-main a.active::after,.header-nav-main a:hover::after{width:100%}
.site-btn{
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-btn);
  font-weight:700;font-size:1.5rem;letter-spacing:.02em;
  border:0;cursor:pointer;text-align:center;
  min-height:4.4rem;padding:.8rem 2rem;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease;
}
.site-btn--accent{
  background:var(--color-accent);color:#fff;
  box-shadow:0 8px 20px rgba(242,107,63,.25);
}
.site-btn--accent:hover{
  background:#d9562a;color:#fff;transform:translateY(-2px);
  box-shadow:var(--shadow-md);
}
.site-btn--primary{background:var(--color-primary);color:#fff;box-shadow:0 8px 24px rgba(26,109,181,.2)}
.site-btn--primary:hover{background:var(--color-primary-dark);color:#fff;transform:translateY(-2px)}
.site-btn--ghost{background:var(--color-surface);color:var(--color-primary);border:1px solid var(--color-line)}
.site-btn--ghost:hover{border-color:var(--color-primary);background:var(--color-primary-soft);transform:translateY(-2px)}
@media(max-width:991.98px){
  .header-nav-main,.header-cta{display:none}
  .header-inner{justify-content:space-between}
}

/* Fixed mobile tab nav */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:1090;
  display:flex;align-items:stretch;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--color-line);
  box-shadow:0 -6px 24px rgba(23,65,104,.08);
  padding:0 env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
.mobile-tabbar .tab-item{
  flex:1;min-height:64px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.25rem;
  font-size:1.2rem;font-weight:600;color:var(--color-muted);
}
.mobile-tabbar .tab-item svg{width:2.2rem;height:2.2rem;stroke-width:1.8}
.mobile-tabbar .tab-item.active,.mobile-tabbar .tab-item:hover{color:var(--color-primary)}
@media(min-width:992px){
  .mobile-tabbar{display:none}
}

/* Hero */
.security-hero{
  position:relative;
  padding:clamp(12rem,14vw,16rem) 0 6rem;
  background:
    radial-gradient(560px 360px at 82% 20%,rgba(26,109,181,.16),transparent 70%),
    linear-gradient(160deg,#F7FBFD 0%,var(--color-bg) 42%,#EFF6FB 100%);
  border-bottom:1px solid var(--color-line);
  overflow:hidden;
}
.security-hero::before{
  content:"";position:absolute;inset:0;opacity:.32;
  background-image:linear-gradient(var(--color-line) 1px,transparent 1px),linear-gradient(90deg,var(--color-line) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:linear-gradient(90deg,transparent 10%,#000 45%,#000 68%,transparent 100%);
  mask-image:linear-gradient(90deg,transparent 10%,#000 45%,#000 68%,transparent 100%);
  pointer-events:none;
}
.security-hero .hero-grid{
  position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:4.5rem;align-items:center;
}
.hero-copy .eyebrow{
  display:inline-flex;align-items:center;gap:.8rem;
  background:var(--color-primary-soft);color:var(--color-primary-dark);
  font-weight:700;font-size:1.35rem;padding:.55rem 1.4rem;border-radius:999px;
  border:1px solid rgba(26,109,181,.12);margin-bottom:2.2rem;
}
.hero-copy .eyebrow svg{width:1.6rem;height:1.6rem}
.hero-copy h1{
  font-size:clamp(3rem,4.2vw,4.8rem);
  letter-spacing:-.03em;line-height:1.22;
  margin-bottom:2rem;max-width:12em;
}
.hero-copy h1 span{color:var(--color-primary)}
.hero-lead{
  font-size:clamp(1.55rem,1.6vw,1.85rem);
  color:var(--color-muted);line-height:1.85;
  max-width:35ch;margin-bottom:3rem;
}
.hero-copy .hero-actions{display:flex;flex-wrap:wrap;gap:1.2rem;margin-bottom:3.4rem}
.hero-actions .site-btn{min-height:5.2rem;padding:0 2.8rem;font-size:1.6rem}
.hero-tags{
  display:flex;flex-wrap:wrap;gap:1rem;list-style:none;padding:0;margin:0;
}
.hero-tags li a{
  display:inline-flex;align-items:center;gap:.65rem;
  background:rgba(255,255,255,.8);
  border:1px solid var(--color-line);
  border-radius:999px;
  color:var(--color-text-body);font-size:1.35rem;
  padding:.6rem 1.4rem;font-weight:500;
  transition:all .25s ease;
}
.hero-tags li a:hover{background:var(--color-primary-soft);border-color:var(--color-primary);color:var(--color-primary-dark)}
.hero-tags svg{width:1.5rem;height:1.5rem;color:var(--color-primary)}
.hero-visual{
  position:relative;display:flex;justify-content:center;
}
.hero-device{
  width:min(300px,82%);border-radius:28px;
  background:linear-gradient(180deg,#fff 0%,#F6FBFF 100%);
  box-shadow:var(--shadow-lg);
  border:1px solid #E9F0F6;
  padding:1.3rem 1.2rem 2rem;
  transform:rotate(1.5deg);
}
.hero-device .device-bar{display:flex;align-items:center;justify-content:space-between;padding:0 .3rem;margin-bottom:1.5rem}
.device-bar i{width:.9rem;height:.9rem;border-radius:50%;background:#EAF0F4;display:block}
.device-bar i:nth-child(2){background:var(--color-primary-soft)}
.device-line{height:1rem;width:55%;background:#DCECF7;border-radius:99px;margin-left:auto}
.device-screen{
  background:var(--color-primary-soft);
  border-radius:18px;padding:1.5rem;
  display:flex;flex-direction:column;gap:1rem;
  border:1px solid #D8E8F4;
}
.device-screen .screen-head{border-radius:12px;background:#fff;height:2.8rem;display:flex;align-items:center;gap:.8rem;padding:0 1rem;font-size:1.1rem;color:var(--color-muted)}
.screen-head span:first-child{width:.8rem;height:.8rem;border-radius:50%;background:var(--color-primary)}
.device-screen .screen-k{
  height:3.6rem;background:#fff;border-radius:12px;
  display:flex;align-items:center;gap:1rem;padding:.6rem 1rem;
}
.screen-k .mini{width:1.8rem;height:1.8rem;border-radius:50%;background:var(--color-primary-soft)}
.screen-k .long{width:70%;height:.8rem;border-radius:99px;background:#EAF1F7}
.screen-k .dot{margin-left:auto;width:.9rem;height:.9rem;border-radius:99px;background:rgba(26,109,181,.18)}
.device-chip{
  border-radius:999px;background:#fff;
  display:flex;align-items:center;justify-content:center;gap:.8rem;
  padding:1.1rem 1.4rem;font-size:1.4rem;font-weight:700;color:var(--color-primary-dark);
  box-shadow:var(--shadow-sm);margin-top:.7rem;
}
@media(max-width:991.98px){
  .security-hero .hero-grid{grid-template-columns:1fr;gap:3rem}
  .hero-visual{order:-1;min-height:250px}
  .hero-device{max-width:280px}
}
@media(max-width:575.98px){
  .security-hero{padding-top:clamp(11rem,16vw,14rem)}
  .hero-copy h1{font-size:3rem}
  .hero-actions .site-btn{width:100%}
}

/* Section common */
.section-safe{padding:7.5rem 0}
@media(max-width:575.98px){.section-safe{padding:5rem 0}}
.section-head{max-width:720px;margin-bottom:4rem}
.section-kicker{
  color:var(--color-primary);font-size:1.4rem;font-weight:700;
  display:inline-flex;align-items:center;gap:.6rem;margin-bottom:1.6rem;
}
.section-kicker::before{content:"";width:2.4rem;height:.42rem;background:var(--color-primary);border-radius:99px;display:inline-block}
.section-head h2{margin-bottom:1.4rem;letter-spacing:-.02em}
.section-head p{color:var(--color-muted);font-size:1.6rem;line-height:1.8}

/* feature rail */
.feature-rail{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:1.4rem;margin-top:-2rem;position:relative;z-index:3;
}
.feature-rail .rail-item{
  background:var(--color-surface);border:1px solid var(--color-line);
  border-radius:var(--radius-card);padding:1.8rem 2rem;
  display:flex;align-items:center;gap:1.6rem;
  box-shadow:var(--shadow-sm);min-height:7.6rem;
  transition:all .25s ease;
}
.feature-rail .rail-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.rail-ico{
  width:4.2rem;height:4.2rem;flex-shrink:0;border-radius:12px;
  background:var(--color-primary-soft);color:var(--color-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:2.1rem;
}
.rail-item strong{display:block;font-size:1.7rem;color:var(--color-text-strong);font-weight:700}
.rail-item small{color:var(--color-muted);font-size:1.35rem;line-height:1.4}
@media(max-width:767.98px){.feature-rail{grid-template-columns:1fr}}
@media(min-width:768px) and (max-width:991.98px){.feature-rail{grid-template-columns:repeat(2,1fr)}}

/* Overview split */
.bg-white{background:var(--color-surface)}
.overview-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:5rem;align-items:center}
.overview-media{
  position:relative;border-radius:22px;overflow:hidden;
  box-shadow:var(--shadow-lg);border:1px solid var(--color-line);
}
.overview-media img{width:100%;height:100%;min-height:340px;object-fit:cover;aspect-ratio:4/3}
.overview-media figcaption{
  position:absolute;left:1.4rem;bottom:1.4rem;
  background:rgba(255,255,255,.88);backdrop-filter:blur(8px);
  padding:.8rem 1.6rem;border-radius:999px;
  font-size:1.3rem;color:var(--color-text-strong);font-weight:600;
}
.overview-content .section-kicker{margin-bottom:1.6rem}
.overview-content h2{margin-bottom:2rem;font-size:clamp(2.5rem,3vw,3.6rem)}
.overview-content>p{color:var(--color-muted);margin-bottom:2.4rem;max-width:50rem}
.check-list{list-style:none;display:grid;gap:1.2rem;margin:0 0 3rem;padding:0}
.check-list li{
  background:var(--color-surface);border:1px solid var(--color-line);
  border-left:4px solid var(--color-primary);
  padding:1.2rem 1.5rem 1.2rem 1.3rem;
  border-radius:12px;font-size:1.55rem;color:var(--color-text-strong);
  display:flex;gap:1rem;align-items:flex-start;font-weight:600;
  transition:background .2s ease,transform .2s ease;
}
.check-list li:hover{background:var(--color-primary-soft);transform:translateX(4px)}
.check-list svg{color:var(--color-primary);flex-shrink:0;margin-top:.4rem;width:1.8rem;height:1.8rem}
@media(max-width:991.98px){.overview-grid{grid-template-columns:1fr;gap:3rem}}
@media(max-width:575.98px){.overview-media img{min-height:230px}}

/* Steps */
.steps-wrap{position:relative}
.secure-steps{background:linear-gradient(180deg,var(--color-surface) 0%,var(--color-bg) 100%);position:relative}
.secure-steps .section-head{text-align:center;margin-inline:auto}
.secure-steps .section-head p{margin-inline:auto}
.step-timeline{
  counter-reset:step;
  display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;
  margin-top:3.5rem;
}
.step-item{
  background:var(--color-surface);
  border:1px solid var(--color-line);
  padding:3rem 2.2rem 2.4rem;
  border-radius:var(--radius-card);
  position:relative;box-shadow:var(--shadow-sm);
  transition:all .3s ease;
}
.step-item::before{
  counter-increment:step;content:"0" counter(step);
  position:absolute;top:-1.8rem;left:2rem;
  width:3.8rem;height:3.8rem;border-radius:50%;
  background:var(--color-primary);color:#fff;
  font-weight:800;font-size:1.5rem;letter-spacing:.03em;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 16px rgba(26,109,181,.2);
}
.step-item:nth-child(even){background:var(--color-surface);transform:translateY(1.4rem)}
.step-item:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:#b7d3e9}
.step-item h3{font-size:1.8rem;margin:1.6rem 0 .9rem}
.step-item p{color:var(--color-muted);font-size:1.45rem;line-height:1.75}
@media(max-width:991.98px){
  .step-timeline{grid-template-columns:repeat(2,1fr);gap:2.6rem}
  .step-item:nth-child(even){transform:none}
  .step-item:hover{transform:translateY(-6px)}
}
@media(max-width:575.98px){.step-timeline{grid-template-columns:1fr}}

/* Strength list */
.strength-list{display:grid;grid-template-columns:1fr 1fr;gap:2.4rem;align-items:start}
.strength-list .st-card{
  background:var(--color-surface);border:1px solid var(--color-line);
  border-radius:var(--radius-card);padding:2.6rem 2.6rem 2.8rem;
  display:flex;gap:2rem;
  transition:all .28s ease;
}
.strength-list .st-card:nth-child(odd){margin-top:2.6rem}
.strength-list .st-card:nth-child(even){transform:translateY(-1.6rem)}
.strength-list .st-card:hover{box-shadow:var(--shadow-md);transform:translateY(-6px);border-color:#bfd7e9}
.st-num{
  font-size:3rem;font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1px var(--color-primary);
  flex-shrink:0;width:4.4rem;
}
.st-card:nth-child(even) .st-num{-webkit-text-stroke-color:var(--color-accent)}
.st-body h3{margin-bottom:.8rem}
.st-body p{color:var(--color-muted);font-size:1.5rem;line-height:1.75}
@media(max-width:767.98px){
  .strength-list{grid-template-columns:1fr;gap:1.6rem}
  .strength-list .st-card:nth-child(odd),.strength-list .st-card:nth-child(even){margin:0;transform:none}
}

/* Security reminder band */
.reminder-band{
  background:var(--color-primary-dark);
  border-radius:24px;
  padding:6rem 5.5rem;
  color:#DCEAF5;
  display:grid;grid-template-columns:1.05fr .95fr;gap:4rem;
  align-items:center;
  position:relative;overflow:hidden;
}
.reminder-band::after{
  content:"";position:absolute;right:-8rem;bottom:-10rem;
  width:32rem;height:32rem;border-radius:50%;
  border:6rem solid rgba(255,255,255,.05);
}
.reminder-kicker{
  display:inline-flex;align-items:center;gap:.8rem;
  font-size:1.4rem;font-weight:700;letter-spacing:.05em;
  padding:.6rem 1.4rem;border-radius:999px;
  background:rgba(255,255,255,.12);margin-bottom:2rem;
}
.reminder-copy h2{color:#fff;font-size:clamp(2.4rem,3vw,3.3rem);margin-bottom:1.5rem}
.reminder-copy p{color:#BFD2E4;max-width:48rem;font-size:1.55rem}
.reminder-tips{list-style:none;display:grid;gap:1.4rem;position:relative;z-index:2}
.reminder-tips li{
  display:flex;gap:1.2rem;align-items:center;font-weight:600;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.12);
  border-radius:14px;padding:1.1rem 1.5rem;color:#fff;font-size:1.5rem;
}
.reminder-tips svg{color:var(--color-accent);font-size:1.8rem;flex-shrink:0}
@media(max-width:991.98px){
  .reminder-band{grid-template-columns:1fr;padding:4rem 2.8rem}
}
@media(max-width:575.98px){.reminder-band{padding:3.2rem 2rem;border-radius:18px}}

/* FAQ */
.faq-section{background:var(--color-surface)}
.faq-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:5rem;align-items:start}
.faq-side .section-head{margin-bottom:2.4rem}
.accordion{--bs-accordion-border-width:0;--bs-accordion-btn-padding-y:2rem;--bs-accordion-btn-padding-x:2rem;--bs-accordion-body-padding-x:2rem;--bs-accordion-body-padding-y:0 2rem 2.2rem;background:transparent}
.accordion-item{
  border:1px solid var(--color-line)!important;
  border-radius:16px!important;background:var(--color-bg)!important;
  margin-bottom:1.2rem;overflow:hidden;
}
.accordion-button{
  font-size:1.6rem!important;font-weight:700!important;color:var(--color-text-strong)!important;
  background:transparent!important;box-shadow:none!important;
  padding:2rem!important;gap:1.2rem;line-height:1.5;
}
.accordion-button::after{
  content:""!important;background:var(--color-primary)!important;width:2.4rem;height:2.4rem;
  border-radius:50%;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2.5'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E")!important;
  background-size:1.4rem!important;background-position:center!important;
  background-repeat:no-repeat!important;transform:none!important;
  transition:transform .25s ease;
}
.accordion-button:not(.collapsed){color:var(--color-primary-dark)!important;background:var(--color-primary-soft)!important}
.accordion-button:not(.collapsed)::after{transform:rotate(180deg)!important}
.accordion-body{
  background:var(--color-primary-soft);
  color:var(--color-text-body);font-size:1.5rem;line-height:1.9;
  padding:0 2rem 2.2rem!important;
}
.q-icon{
  width:2.6rem;height:2.6rem;flex-shrink:0;border-radius:50%;
  background:var(--color-primary-soft);color:var(--color-primary);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:1.5rem;font-weight:800;
}
.accordion-button:not(.collapsed) .q-icon{background:var(--color-primary);color:#fff}
@media(max-width:991.98px){.faq-grid{grid-template-columns:1fr;gap:3rem}}

/* CTA */
.cta-block{
  background:
    radial-gradient(600px 300px at 85% 30%,rgba(242,107,63,.12),transparent 60%),
    linear-gradient(115deg,#0E4A7E 0%,#163C63 65%,#102B40 100%);
  border-radius:26px;padding:5.5rem 5rem;
  position:relative;overflow:hidden;
  text-align:center;
}
.cta-block h2{color:#fff;font-size:clamp(2.5rem,3.4vw,3.7rem);letter-spacing:-.02em;margin-bottom:1.2rem}
.cta-block>p{color:#CCDBE8;font-size:1.55rem;margin:0 auto 3.2rem;max-width:58rem}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:1.4rem}
.site-btn--accent{background:var(--color-accent)}
.site-btn--light{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.45);color:#fff}
.site-btn--light:hover{background:rgba(255,255,255,.24);color:#fff;transform:translateY(-2px)}
@media(max-width:575.98px){
  .cta-block{padding:3.6rem 2rem;border-radius:18px}
  .cta-actions .site-btn{width:100%}
}
.content-bottom-space{height:1px}
@media(max-width:991.98px){.content-bottom-space{height:var(--content-bottom-space)}}

/* Footer */
.site-footer{
  background:#0b2c48;color:#B9CDE0;margin-top:7rem;
  padding:7rem 0 3rem;
}
.footer-top{display:grid;grid-template-columns:1.4fr .9fr 1fr;gap:5rem;padding-bottom:4rem;border-bottom:1px solid rgba(255,255,255,.14)}
.footer-brand{display:inline-flex;align-items:center;gap:1.2rem;margin-bottom:1.6rem}
.footer-about p{max-width:42rem;font-size:1.45rem;line-height:1.9;margin:0}
.footer-links h3,.footer-service h3{color:#fff;font-size:1.6rem;margin-bottom:1.6rem;font-weight:700}
.footer-links ul,.footer-service ul{list-style:none;padding:0;margin:0;display:grid;gap:1rem}
.footer-links a,.footer-service li{font-size:1.45rem;opacity:.9;transition:all .2s}
.footer-links a:hover{color:#fff;opacity:1;padding-left:.6rem}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem;
  padding-top:2.4rem;font-size:1.35rem;color:#86A4BE;
}
@media(max-width:991.98px){.footer-top{grid-template-columns:1fr 1fr;gap:3rem}.footer-links{order:3}}
@media(max-width:575.98px){.footer-top{grid-template-columns:1fr;padding-bottom:2.4rem}.footer-links{order:0}}