/* roulang page: index */
:root{
  --brand:#1A5CD8;
  --brand-hover:#1449AD;
  --brand-active:#0F3A8C;
  --brand-soft:#E9F0FE;
  --brand-line:#C6D8F7;
  --teal:#00A88E;
  --teal-soft:#E4F7F3;
  --accent:#FF7A1A;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --band:#EDF2F9;
  --row:#F7FAFE;
  --text:#0E1B2C;
  --text-2:#4E5F76;
  --text-3:#8492A6;
  --border:#E4EBF4;
  --border-hover:#D6E2F0;
  --r-card:14px;
  --r-block:18px;
  --r-btn:10px;
  --r-img:12px;
  --sh1:0 1px 2px rgba(16,44,76,.05);
  --sh2:0 8px 24px rgba(16,44,76,.07);
  --sh3:0 18px 44px rgba(16,44,76,.10);
  --t:.16s cubic-bezier(.2,.6,.2,1);
  --t-slow:.24s cubic-bezier(.2,.6,.2,1);
  --bs-primary:#1A5CD8;
  --bs-primary-rgb:26,92,216;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --bs-body-color:#0E1B2C;
  --bs-body-bg:#F5F8FC;
  --bs-border-radius:12px;
  --bs-border-color:#E4EBF4;
  --bs-link-color:#1A5CD8;
  --bs-link-hover-color:#1449AD;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--brand-hover)}
button{font-family:inherit}
h1,h2,h3,h4{color:var(--text);letter-spacing:-0.01em;margin:0}
h1{font-size:clamp(28px,3.4vw,44px);line-height:1.25;font-weight:700}
h2{font-size:clamp(22px,2.2vw,32px);line-height:1.35;font-weight:700}
h3{font-size:20px;line-height:1.5;font-weight:600}
p{margin:0}
.num{font-variant-numeric:tabular-nums}

.container{max-width:1200px;padding-left:24px;padding-right:24px}
@media (max-width:575px){.container{padding-left:16px;padding-right:16px}}

/* ---------- 通用组件 ---------- */
.section{padding:80px 0}
.section--tight{padding:64px 0}
.section--band{background:var(--band)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:24px}
.section-head p.sub{color:var(--text-2);font-size:15px;margin-top:8px;max-width:640px}
.text-link{font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.text-link svg{width:16px;height:16px;transition:transform var(--t)}
.text-link:hover svg{transform:translateX(3px)}
@media (max-width:575px){.section{padding:48px 0}.section--tight{padding:44px 0}}

.btn{--bs-btn-focus-box-shadow:0 0 0 3px rgba(26,92,216,.22)}
.btn-brand{
  background:var(--brand);border:1px solid var(--brand);color:#fff;
  height:44px;padding:0 20px;border-radius:var(--r-btn);font-weight:600;font-size:15px;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  transition:background var(--t),box-shadow var(--t),transform var(--t);
}
.btn-brand:hover{background:var(--brand-hover);border-color:var(--brand-hover);color:#fff;box-shadow:var(--sh2)}
.btn-brand:active{background:var(--brand-active);border-color:var(--brand-active);transform:translateY(1px)}
.btn-brand svg{width:18px;height:18px}
.btn-lg-brand{height:48px;font-size:16px;padding:0 28px}
.btn-ghost{
  background:#fff;border:1px solid var(--brand-line);color:var(--brand);
  height:44px;padding:0 20px;border-radius:var(--r-btn);font-weight:600;font-size:15px;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:var(--t);
}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand)}
.btn-ghost:active{transform:translateY(1px)}
.btn-ghost svg{width:18px;height:18px}
.btn-accent{
  background:#fff;border:1px solid var(--accent);color:#C4550A;
  height:44px;padding:0 20px;border-radius:var(--r-btn);font-weight:600;font-size:15px;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:var(--t);
}
.btn-accent:hover{background:#FFF3E9;color:#A6450A;border-color:#E86A0E}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px}

.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:500;background:var(--brand-soft);color:var(--brand);white-space:nowrap;
}
.chip--status{background:var(--teal-soft);color:#007A66}
.chip--accent{background:var(--accent);color:#fff}
.chip--muted{background:var(--band);color:var(--text-2)}

.card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh1);transition:box-shadow var(--t-slow),transform var(--t-slow),border-color var(--t-slow)}
.card:hover{box-shadow:var(--sh2);transform:translateY(-2px);border-color:var(--border-hover)}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--border);
  transition:box-shadow var(--t-slow);
}
.site-header.is-scrolled{box-shadow:var(--sh1)}
.header-inner{display:flex;align-items:center;gap:16px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:28px;height:28px;border-radius:8px;display:block}
.brand-text{font-size:17px;font-weight:700;color:var(--text);letter-spacing:-0.01em;white-space:nowrap}
.brand:hover .brand-text{color:var(--brand)}
.seg-nav{display:flex;align-items:center;gap:8px;margin-left:8px;overflow-x:auto;scrollbar-width:none;flex:1 1 auto}
.seg-nav::-webkit-scrollbar{display:none}
.seg-chip{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  font-size:14px;font-weight:500;color:var(--text-2);border:1px solid transparent;white-space:nowrap;
  transition:background var(--t),color var(--t),border-color var(--t);
}
.seg-chip:hover{background:var(--brand-soft);color:var(--brand)}
.seg-chip.active{background:var(--brand-soft);color:var(--brand);border-color:var(--brand);font-weight:600}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto}
.header-actions .btn-brand{height:40px;font-size:14px;padding:0 18px}
.menu-toggle{
  width:44px;height:44px;border:1px solid var(--border);background:#fff;border-radius:var(--r-btn);
  display:inline-flex;align-items:center;justify-content:center;color:var(--text);
}
.menu-toggle:hover{border-color:var(--brand-line);color:var(--brand)}
.menu-toggle svg{width:20px;height:20px}
.offcanvas{border-left:1px solid var(--border);width:320px}
.offcanvas-header{border-bottom:1px solid var(--border);padding:18px 20px}
.offcanvas-body{padding:20px;display:flex;flex-direction:column;gap:10px}
.drawer-chip{
  display:flex;align-items:center;height:46px;padding:0 16px;border-radius:12px;
  border:1px solid var(--border);color:var(--text-2);font-size:15px;font-weight:500;background:#fff;
}
.drawer-chip:hover{border-color:var(--brand-line);color:var(--brand);background:var(--brand-soft)}
.drawer-chip.active{background:var(--brand-soft);color:var(--brand);border-color:var(--brand);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--border);font-size:13px;color:var(--text-3);line-height:1.9}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(180deg,#FFFFFF 0%,#F5F8FC 100%);padding:64px 0 72px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.hero h1{margin-bottom:18px}
.hero h1 .hl{color:var(--brand)}
.hero-sub{font-size:17px;line-height:1.8;color:var(--text-2);max-width:520px;margin-bottom:28px}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px}
.meta-chip{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;
  background:#fff;border:1px solid var(--border);font-size:13px;color:var(--text-2);
  font-variant-numeric:tabular-nums;
}
.meta-chip b{color:var(--text);font-weight:600}
.hero-visual{position:relative;min-height:380px}
.hero-backdrop{
  position:absolute;inset:-6% -4% 6% -6%;
  background-size:cover;background-position:center;opacity:.18;border-radius:var(--r-block);
  filter:saturate(.9);
}
.hero-shot{
  position:relative;border-radius:16px;box-shadow:var(--sh3);border:1px solid var(--border);
  width:92%;transform:rotate(-1.2deg);
}
.hero-float{
  position:absolute;right:0;bottom:24px;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);box-shadow:var(--sh2);padding:14px 16px;min-width:168px;transform:rotate(1deg);
}
.hero-float .fl-label{font-size:12px;color:var(--text-3);margin-bottom:4px}
.hero-float .fl-value{font-size:20px;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums;display:flex;align-items:baseline;gap:6px}
.hero-float .fl-value span{font-size:13px;font-weight:500;color:var(--teal)}
.stars{display:inline-flex;gap:2px;color:var(--accent);margin-top:6px}
.stars svg{width:14px;height:14px}
@media (max-width:991px){
  .hero{padding:44px 0 52px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{min-height:300px}
  .hero-shot{width:100%}
}

/* ---------- 轮播 ---------- */
.func-carousel{position:relative}
.func-carousel .carousel-inner{padding-bottom:8px}
.slide-inner{max-width:860px;margin:0 auto}
.slide-media{aspect-ratio:16/10;overflow:hidden;border-radius:var(--r-img);border:1px solid var(--border);background:var(--band)}
.slide-media img{width:100%;height:100%;object-fit:cover}
.slide-caption{margin-top:18px;text-align:center}
.slide-caption h3{margin-bottom:6px}
.slide-caption p{color:var(--text-2);font-size:15px}
.slide-caption .chip{margin-top:12px}
.func-indicators{position:static;margin:28px 0 0;display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.func-indicators [data-bs-target]{
  width:auto;height:32px;text-indent:0;border:1px solid var(--border);background:#fff;border-radius:999px;
  color:var(--text-2);font-size:14px;font-weight:500;padding:0 16px;opacity:1;margin:0;
  transition:var(--t);
}
.func-indicators [data-bs-target]:hover{border-color:var(--brand-line);color:var(--brand)}
.func-indicators .active{background:var(--brand);border-color:var(--brand);color:#fff}
.carousel-control-prev,.carousel-control-next{width:44px;opacity:1}
.carousel-control-prev-icon,.carousel-control-next-icon{
  width:38px;height:38px;border-radius:999px;background:#fff;border:1px solid var(--border);
  background-image:none;position:relative;box-shadow:var(--sh1);
}
.carousel-control-prev-icon::after,.carousel-control-next-icon::after{
  content:"";position:absolute;top:50%;left:50%;width:9px;height:9px;
  border-right:2px solid var(--text-2);border-bottom:2px solid var(--text-2);
}
.carousel-control-prev-icon::after{transform:translate(-30%,-50%) rotate(135deg)}
.carousel-control-next-icon::after{transform:translate(-70%,-50%) rotate(-45deg)}
.carousel-control-prev-icon:hover,.carousel-control-next-icon:hover{border-color:var(--brand-line)}
@media (max-width:767px){.carousel-control-prev,.carousel-control-next{display:none}}

/* ---------- 价值点时间轴 ---------- */
.timeline{position:relative;padding-left:0}
.tl-item{display:grid;grid-template-columns:56px 1fr;gap:20px;position:relative;padding-bottom:32px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:27px;top:56px;bottom:0;width:1px;background:var(--border);
}
.tl-item:last-child::before{display:none}
.tl-num{
  width:56px;height:56px;border-radius:999px;border:1px solid var(--brand-line);background:#fff;
  display:flex;align-items:center;justify-content:center;font-size:19px;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;box-shadow:var(--sh1);
}
.tl-body{padding-top:6px}
.tl-body h3{margin-bottom:6px}
.tl-body p{color:var(--text-2);font-size:15px;max-width:620px}
.side-stack{display:flex;flex-direction:column;gap:20px}
.side-card{padding:24px}
.side-card h3{font-size:17px;margin-bottom:8px}
.side-card p{font-size:14px;color:var(--text-2);line-height:1.75}
.side-card .side-top{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.side-icon{width:36px;height:36px;border-radius:10px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;color:var(--brand)}
.side-icon svg{width:18px;height:18px}

/* ---------- 系统要求 ---------- */
.req-card{padding:28px;height:100%}
.req-card .req-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.req-card h3{font-size:18px}
.req-list{margin:0}
.req-row{display:flex;gap:16px;align-items:center;min-height:44px;padding:0 12px;border-radius:10px}
.req-row:nth-child(odd){background:var(--row)}
.req-row dt{flex:0 0 96px;font-weight:400;font-size:14px;color:var(--text-3);margin:0}
.req-row dd{margin:0;font-size:15px;color:var(--text);font-weight:500}
.req-note{margin-top:16px;font-size:13px;color:var(--text-3);line-height:1.75}

/* ---------- 评价墙 ---------- */
.review-wall{columns:3;column-gap:24px}
.review-card{break-inside:avoid;margin-bottom:24px;padding:24px}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:40px;height:40px;border-radius:999px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex:0 0 auto;
}
.avatar--teal{background:var(--teal-soft);color:#007A66}
.avatar--accent{background:#FFF0E4;color:#C4550A}
.review-name{font-size:15px;font-weight:600;line-height:1.4}
.review-role{font-size:13px;color:var(--text-3)}
.review-text{font-size:15px;color:var(--text-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:5;-webkit-box-orient:vertical;overflow:hidden}
@media (max-width:991px){.review-wall{columns:2}}
@media (max-width:575px){.review-wall{columns:1}}

/* ---------- 下载区 ---------- */
.download-block{
  background:var(--brand-soft);border-radius:var(--r-block);padding:48px;border:1px solid var(--brand-line);
  text-align:center;
}
.download-block h2{margin-bottom:12px}
.download-block .dl-sub{color:var(--text-2);font-size:15px;max-width:620px;margin:0 auto 28px}
.dl-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;align-items:center}
.qr-box{
  width:120px;height:120px;border-radius:var(--r-img);background:#fff;border:1px solid var(--brand-line);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  font-size:12px;color:var(--text-3);box-shadow:var(--sh1);
}
.qr-box svg{width:44px;height:44px;color:var(--brand)}
.dl-note{margin-top:22px;font-size:13px;color:var(--text-3)}
@media (max-width:767px){.download-block{padding:32px 20px}}

/* ---------- 资讯列表 ---------- */
.news-lead{padding:0;overflow:hidden;display:flex;flex-direction:column;height:100%}
.news-lead .lead-img{aspect-ratio:16/10;overflow:hidden;background:var(--band)}
.news-lead .lead-img img{width:100%;height:100%;object-fit:cover;transition:transform var(--t-slow)}
.news-lead:hover .lead-img img{transform:scale(1.03)}
.news-lead .lead-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-lead h3{font-size:18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-lead .lead-desc{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}
.news-list{display:flex;flex-direction:column;gap:12px}
.news-item{
  display:block;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:16px 18px;box-shadow:var(--sh1);position:relative;transition:background var(--t),box-shadow var(--t),border-color var(--t);
}
.news-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;
  background:transparent;transition:background var(--t);
}
.news-item:hover{background:var(--row);box-shadow:var(--sh2);border-color:var(--border-hover)}
.news-item:hover::before{background:var(--brand)}
.news-item h4{font-size:16px;font-weight:600;line-height:1.6;color:var(--text);margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item:hover h4{color:var(--brand)}
.news-item .news-meta{margin-top:8px}
.empty-state{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:56px 24px;text-align:center;
}
.empty-state .es-bar{width:56px;height:6px;border-radius:999px;background:var(--band);margin:0 auto 18px}
.empty-state h3{color:var(--text-2);font-size:17px;margin-bottom:8px}
.empty-state p{color:var(--text-3);font-size:14px}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{
  border:1px solid var(--border);border-radius:var(--r-card);margin-bottom:12px;overflow:hidden;background:#fff;
  box-shadow:var(--sh1);
}
.faq-acc .accordion-button{
  font-size:17px;font-weight:600;color:var(--text);background:#fff;padding:18px 52px 18px 22px;
  box-shadow:none;position:relative;border:0;
}
.faq-acc .accordion-button::before{
  content:"";position:absolute;left:0;top:50%;width:4px;height:0;background:var(--brand);
  border-radius:0 4px 4px 0;transform:translateY(-50%);transition:height var(--t-slow);
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);background:#fff}
.faq-acc .accordion-button:not(.collapsed)::before{height:62%}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-2px}
.faq-acc .accordion-button::after{
  content:"";position:absolute;right:24px;top:50%;width:9px;height:9px;background-image:none;
  border-right:2px solid var(--text-3);border-bottom:2px solid var(--text-3);
  transform:translateY(-70%) rotate(45deg);transition:transform var(--t-slow),border-color var(--t);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:translateY(-30%) rotate(-135deg);border-color:var(--brand)}
.faq-acc .accordion-body{padding:0 22px 20px;color:var(--text-2);font-size:15px;line-height:1.85}

/* ---------- 订阅表单 ---------- */
.subscribe-card{padding:40px;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.subscribe-card h2{font-size:24px;margin-bottom:10px}
.subscribe-card p{color:var(--text-2);font-size:15px}
.sub-form{display:flex;gap:12px;flex-wrap:wrap}
.sub-form .form-control{
  height:44px;border-radius:var(--r-btn);border:1px solid var(--border-hover);font-size:15px;padding:0 14px;
  flex:1 1 200px;
}
.sub-form .form-control:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(26,92,216,.16)}
.sub-form .form-control::placeholder{color:var(--text-3)}
.form-hint{font-size:13px;color:var(--text-3);margin-top:10px;width:100%}
@media (max-width:767px){.subscribe-card{grid-template-columns:1fr;padding:28px 20px;gap:20px}}

/* ---------- Footer ---------- */
.site-footer{background:#0D1B2E;color:#C7D3E2;padding:64px 0 32px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-text{color:#fff;font-size:16px}
.footer-desc{font-size:14px;line-height:1.9;color:#C7D3E2;max-width:320px}
.footer-meta{font-size:13px;color:#8A9AB0;margin-top:14px;font-variant-numeric:tabular-nums}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.footer-links a{color:#C7D3E2;font-size:14px}
.footer-links a:hover{color:#7FA8F0}
.footer-contact{font-size:14px;line-height:1.9;color:#C7D3E2}
.footer-contact b{color:#fff;font-weight:600}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(199,211,226,.16);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8A9AB0;
}
.footer-bottom a{color:#8A9AB0}
.footer-bottom a:hover{color:#7FA8F0}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:575px){.footer-grid{grid-template-columns:1fr}.site-footer{padding:48px 0 28px}}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .card:hover,.news-item:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --brand:#1A5CD8;
  --brand-hover:#1449AD;
  --brand-active:#0F3A8C;
  --brand-soft:#E9F0FE;
  --brand-line:#C6D8F7;
  --teal:#00A88E;
  --teal-soft:#E4F7F3;
  --accent:#FF7A1A;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --band:#EDF2F9;
  --text:#0E1B2C;
  --text-2:#4E5F76;
  --text-3:#8492A6;
  --line:#E4EBF4;
  --line-hover:#D6E2F0;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --r-img:12px;
  --sh1:0 1px 2px rgba(16,44,76,.05);
  --sh2:0 8px 24px rgba(16,44,76,.07);
  --sh3:0 18px 44px rgba(16,44,76,.10);
  --ease:cubic-bezier(.2,.6,.2,1);
  --bs-primary:#1A5CD8;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --bs-border-radius:10px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:104px}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color 160ms var(--ease)}
a:hover{color:var(--brand-hover)}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-0.01em}
h1{font-size:clamp(28px,3.4vw,44px);line-height:1.25;font-weight:700}
h2{font-size:clamp(22px,2.2vw,32px);line-height:1.35;font-weight:700}
h3{font-size:20px;line-height:1.5;font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media (min-width:1200px){.container{max-width:1200px}}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:background-color 160ms var(--ease),color 160ms var(--ease),border-color 160ms var(--ease),box-shadow 240ms var(--ease),transform 160ms var(--ease);}
.btn svg{width:18px;height:18px;flex:none}
.btn-brand{background:var(--brand);color:#fff;box-shadow:var(--sh1)}
.btn-brand:hover{background:var(--brand-hover);color:#fff;box-shadow:var(--sh2)}
.btn-brand:active{background:var(--brand-active);transform:translateY(1px)}
.btn-outline-brand{background:#fff;color:var(--brand);border-color:var(--brand-line)}
.btn-outline-brand:hover{background:var(--brand-soft);color:var(--brand-hover);border-color:var(--brand)}
.btn-outline-brand:active{background:#DCE8FD;transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--brand);padding:0 12px}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-hover)}
.btn-lg-x{height:48px;padding:0 28px;font-size:16px}
.btn-block-sm{width:100%}

/* ============ Header ============ */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow 240ms var(--ease)}
.site-header.is-scrolled{box-shadow:var(--sh1)}
.header-inner{display:flex;align-items:center;gap:16px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:28px;height:28px;flex:none}
.brand-text{font-size:17px;font-weight:700;color:var(--text);letter-spacing:-0.01em;white-space:nowrap}
.brand:hover .brand-text{color:var(--brand)}
.seg-nav{display:flex;align-items:center;gap:6px;margin-left:12px;overflow-x:auto;scrollbar-width:none;flex:1}
.seg-nav::-webkit-scrollbar{display:none}
.seg-chip{display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;font-size:14px;
  font-weight:500;color:var(--text-2);white-space:nowrap;border:1px solid transparent;
  transition:background-color 160ms var(--ease),color 160ms var(--ease),border-color 160ms var(--ease)}
.seg-chip:hover{background:var(--brand-soft);color:var(--brand)}
.seg-chip.active{background:var(--brand-soft);color:var(--brand);border-color:var(--brand);font-weight:600}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:none}
.hamburger{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;transition:border-color 160ms var(--ease),background-color 160ms var(--ease)}
.hamburger:hover{border-color:var(--line-hover);background:var(--brand-soft)}
.hamburger svg{width:20px;height:20px}
.offcanvas{border-left:1px solid var(--line)}
.offcanvas-title{font-size:16px;font-weight:700}
.drawer-chips{display:flex;flex-wrap:wrap;gap:10px}
.drawer-chips .seg-chip{height:40px;border-color:var(--line);background:#fff}
.drawer-chips .seg-chip.active{background:var(--brand-soft);border-color:var(--brand);color:var(--brand)}
.drawer-foot{margin-top:24px;padding-top:20px;border-top:1px solid var(--line);font-size:14px;color:var(--text-2);line-height:1.9}

/* ============ Hero ============ */
.page-hero{position:relative;background:#fff;border-bottom:1px solid var(--line);overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center right;opacity:.10;pointer-events:none}
.page-hero .container{position:relative;z-index:1;padding-top:56px;padding-bottom:48px}
@media (min-width:992px){.page-hero .container{padding-top:80px;padding-bottom:64px}}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:20px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--line-hover)}
.crumb .cur{color:var(--text-3)}
.hero-tag{display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:500;margin-bottom:18px}
.hero-sub{max-width:760px;margin-top:16px;font-size:16px;color:var(--text-2)}
.anchor-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.anchor-chip{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:14px;font-weight:500;color:var(--text-2);
  transition:border-color 160ms var(--ease),color 160ms var(--ease),box-shadow 240ms var(--ease),transform 160ms var(--ease)}
.anchor-chip:hover{border-color:var(--brand);color:var(--brand);box-shadow:var(--sh2);transform:translateY(-2px)}
.anchor-chip .dot{width:6px;height:6px;border-radius:50%;background:var(--brand)}

/* ============ 主体布局 ============ */
.section{padding-top:48px;padding-bottom:48px}
@media (min-width:992px){.section{padding-top:80px;padding-bottom:80px}}
.section-head{margin-bottom:24px}
.section-head h2{margin-bottom:10px}
.section-head p{color:var(--text-2);max-width:760px}
.section-head.center{text-align:center}
.section-head.center p{margin-left:auto;margin-right:auto}

.toc-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);padding:20px}
@media (min-width:992px){.toc-card{position:sticky;top:92px}}
.toc-title{font-size:13px;font-weight:600;color:var(--text-3);letter-spacing:.06em;margin-bottom:12px}
.toc-list a{display:flex;align-items:center;gap:10px;min-height:44px;padding:6px 10px;border-left:3px solid transparent;
  border-radius:0 8px 8px 0;font-size:14px;color:var(--text-2);transition:background-color 160ms var(--ease),color 160ms var(--ease),border-color 160ms var(--ease)}
.toc-list a:hover{background:#F7FAFE;color:var(--brand)}
.toc-list a.active{color:var(--brand);font-weight:600;border-left-color:var(--brand);background:var(--brand-soft)}
.toc-meta{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);line-height:1.8}

.step-block{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);
  padding:24px;margin-bottom:20px;transition:box-shadow 240ms var(--ease),border-color 160ms var(--ease)}
.step-block:hover{box-shadow:var(--sh2);border-color:var(--line-hover)}
@media (min-width:768px){.step-block{padding:32px}}
.step-head{display:flex;align-items:flex-start;gap:16px;margin-bottom:16px}
.step-no{width:40px;height:40px;flex:none;border-radius:50%;border:2px solid var(--brand-line);color:var(--brand);
  font-size:16px;font-weight:700;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums}
.step-head h2{font-size:clamp(19px,1.7vw,24px);line-height:1.4;margin-bottom:6px}
.step-head .step-kicker{font-size:13px;color:var(--text-3)}
.step-block p{color:var(--text-2)}
.step-figure{margin:20px 0 0;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line)}
.step-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.step-figure figcaption{font-size:13px;color:var(--text-3);text-align:center;padding:10px 12px;background:#FBFDFF}
.tip-box{display:flex;gap:12px;margin-top:18px;padding:14px 16px;background:var(--brand-soft);
  border:1px solid var(--brand-line);border-radius:var(--r-img)}
.tip-box svg{width:18px;height:18px;flex:none;margin-top:4px}
.tip-box p{font-size:14px;color:var(--text-2);line-height:1.8}
.tip-box b{color:var(--brand)}

/* ============ 环境要求 ============ */
.env-wrap{background:var(--band);border-radius:var(--r-lg);padding:32px 20px}
@media (min-width:768px){.env-wrap{padding:48px}}
.env-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);overflow:hidden;height:100%}
.env-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 24px;border-bottom:1px solid var(--line)}
.env-card-head h3{font-size:18px}
.chip{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:13px;font-weight:500;white-space:nowrap}
.chip-blue{background:var(--brand-soft);color:var(--brand)}
.chip-teal{background:var(--teal-soft);color:var(--teal)}
.chip-accent{background:var(--accent);color:#fff}
.spec-list{padding:8px 24px 20px}
.spec-row{display:flex;align-items:center;gap:16px;min-height:44px;padding:6px 0;border-bottom:1px dashed var(--line)}
.spec-row:last-child{border-bottom:none}
.spec-row .k{width:96px;flex:none;font-size:14px;color:var(--text-3)}
.spec-row .v{font-size:14px;font-weight:600;color:var(--text)}
.spec-row:nth-child(odd){background:#F7FAFE;border-radius:6px;padding-left:8px;padding-right:8px}

/* ============ FAQ ============ */
.accordion-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card) !important;
  box-shadow:var(--sh1);margin-bottom:12px;overflow:hidden}
.accordion-button{background:var(--card);font-size:17px;font-weight:600;color:var(--text);padding:18px 20px;
  border-radius:var(--r-card) !important;box-shadow:none !important;position:relative;gap:14px}
.accordion-button::after{display:none}
.accordion-button .caret{width:18px;height:18px;flex:none;margin-left:auto;transition:transform 240ms var(--ease);color:var(--text-3)}
.accordion-button:not(.collapsed){color:var(--brand);background:var(--brand-soft)}
.accordion-button:not(.collapsed) .caret{transform:rotate(180deg);color:var(--brand)}
.accordion-button:not(.collapsed)::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;background:var(--brand);border-radius:0 4px 4px 0}
.accordion-button:hover{color:var(--brand)}
.accordion-body{padding:6px 20px 20px;font-size:15px;color:var(--text-2);line-height:1.85}

/* ============ CTA ============ */
.cta-block{background:var(--brand-soft);border:1px solid var(--brand-line);border-radius:var(--r-lg);
  padding:32px 24px;text-align:center}
@media (min-width:768px){.cta-block{padding:48px}}
.cta-block h2{margin-bottom:12px}
.cta-block > p{color:var(--text-2);max-width:640px;margin:0 auto}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:28px}
.qr-box{width:120px;height:120px;border-radius:var(--r-img);border:1px dashed var(--brand-line);background:#fff;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;margin:28px auto 0;color:var(--text-3);font-size:12px}
.qr-box svg{width:28px;height:28px;color:var(--brand)}
.cta-note{margin-top:18px;font-size:13px;color:var(--text-3)}

/* ============ 页脚 ============ */
.site-footer{background:#0D1B2E;color:#C7D3E2;margin-top:64px;padding-top:64px;padding-bottom:32px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr}}
@media (min-width:1200px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-text{color:#fff;font-size:17px;font-weight:700}
.footer-desc{font-size:14px;line-height:1.85;color:#9FB0C6;max-width:400px}
.footer-meta{margin-top:12px;font-size:13px;color:#8492A6;font-variant-numeric:tabular-nums}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:#C7D3E2}
.footer-links a:hover{color:#7FA8F5}
.footer-contact{font-size:14px;line-height:2;color:#9FB0C6}
.footer-contact b{color:#fff;font-weight:600}
.footer-bottom{margin-top:44px;padding-top:20px;border-top:1px solid rgba(199,211,226,.16);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8492A6}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .anchor-chip:hover{transform:none}
}

/* roulang page: article */
:root{
  --brand:#1A5CD8;
  --brand-hover:#1449AD;
  --brand-active:#0F3A8C;
  --brand-soft:#E9F0FE;
  --brand-line:#C6D8F7;
  --teal:#00A88E;
  --teal-soft:#E4F7F3;
  --orange:#FF7A1A;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --band:#EDF2F9;
  --ink:#0E1B2C;
  --ink-2:#4E5F76;
  --ink-3:#8492A6;
  --line:#E4EBF4;
  --line-2:#D6E2F0;
  --r-card:14px;
  --r-block:18px;
  --r-btn:10px;
  --r-img:12px;
  --sh1:0 1px 2px rgba(16,44,76,.05);
  --sh2:0 8px 24px rgba(16,44,76,.07);
  --sh3:0 18px 44px rgba(16,44,76,.10);
  --ease:cubic-bezier(.2,.6,.2,1);

  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --bs-body-color:#0E1B2C;
  --bs-body-bg:#F5F8FC;
  --bs-primary:#1A5CD8;
  --bs-primary-rgb:26,92,216;
  --bs-border-radius:14px;
  --bs-border-radius-sm:10px;
  --bs-border-radius-lg:18px;
  --bs-link-color:#1A5CD8;
  --bs-link-hover-color:#1449AD;
  --bs-card-border-color:#E4EBF4;
  --bs-card-border-radius:14px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand);text-decoration:none;transition:color .16s var(--ease)}
a:hover{color:var(--brand-hover)}
button{font-family:inherit}
h1,h2,h3,h4,h5,p,ul,ol,dl,figure{margin:0}
ul,ol{padding:0}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
@media (max-width:575.98px){.container{padding-left:16px;padding-right:16px}}

:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh1)}
.header-inner{display:flex;align-items:center;gap:16px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none}
.brand-mark{width:28px;height:28px;flex:0 0 28px}
.brand-text{font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--ink);white-space:nowrap}
.brand:hover .brand-text{color:var(--brand)}

.seg-nav{
  display:flex;align-items:center;gap:8px;
  margin-left:auto;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
  padding:4px;
}
.seg-nav::-webkit-scrollbar{display:none}
.seg-chip{
  display:inline-flex;align-items:center;
  height:36px;padding:0 16px;
  border-radius:999px;
  font-size:15px;
  color:var(--ink-2);
  border:1px solid transparent;
  white-space:nowrap;
  transition:background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.seg-chip:hover{background:var(--brand-soft);color:var(--brand)}
.seg-chip.active{background:var(--brand-soft);color:var(--brand);border-color:var(--brand);font-weight:600}
.header-cta{flex:0 0 auto;margin-left:8px}

.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;
  border:none;border-radius:var(--r-btn);
  background:var(--brand);color:#fff;
  font-size:15px;font-weight:600;
  cursor:pointer;
  transition:background .16s var(--ease),box-shadow .16s var(--ease),transform .16s var(--ease);
}
.btn-brand:hover{background:var(--brand-hover);color:#fff;box-shadow:var(--sh2)}
.btn-brand:active{background:var(--brand-active);color:#fff;transform:translateY(1px)}
.btn-brand:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-brand svg{width:18px;height:18px;flex:0 0 18px}

.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;
  border:1px solid var(--brand);border-radius:var(--r-btn);
  background:#fff;color:var(--brand);
  font-size:15px;font-weight:600;
  transition:background .16s var(--ease),color .16s var(--ease),box-shadow .16s var(--ease);
}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-hover);box-shadow:var(--sh1)}

.nav-toggle{
  margin-left:auto;
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-2);border-radius:12px;
  background:#fff;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.mobile-nav{width:min(320px,86vw)}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--line)}
.mobile-nav .offcanvas-title{font-size:17px;font-weight:700;color:var(--ink)}
.mobile-links{display:flex;flex-direction:column;gap:4px}
.mobile-links a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;
  border-radius:12px;color:var(--ink-2);font-size:15px;
}
.mobile-links a:hover,.mobile-links a.active{background:var(--brand-soft);color:var(--brand)}
.mobile-contact{margin-top:20px;font-size:13px;color:var(--ink-3);line-height:1.9}

/* ============ 文章主体 ============ */
.article-main{padding:32px 0 88px}

.breadcrumb-bar{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:14px;color:var(--ink-3);
  margin-bottom:24px;
}
.breadcrumb-bar a{color:var(--ink-2)}
.breadcrumb-bar a:hover{color:var(--brand)}
.breadcrumb-bar .sep{color:var(--line-2)}
.breadcrumb-bar .current{
  color:var(--ink-3);
  max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
@media (max-width:575.98px){.breadcrumb-bar .current{max-width:160px}}

.article-row{gap:0}
.article-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-block);
  box-shadow:var(--sh1);
  padding:36px;
}
@media (max-width:767.98px){.article-card{padding:24px}}
@media (max-width:575.98px){.article-card{padding:18px;border-radius:var(--r-card)}}

.article-head{padding-bottom:24px;border-bottom:1px solid var(--line);margin-bottom:28px}
.article-title{
  font-size:clamp(28px,3.4vw,44px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
  margin:14px 0 18px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:13px;color:var(--ink-3);
  font-variant-numeric:tabular-nums;
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line-2)}

.chip{
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;
  border-radius:999px;
  font-size:13px;font-weight:500;line-height:1;
  white-space:nowrap;
}
.chip-cat{background:var(--brand-soft);color:var(--brand)}
.chip-status{background:var(--teal-soft);color:var(--teal)}
.chip-version{background:var(--orange);color:#fff}

/* 正文排版 */
.article-body{
  max-width:760px;
  margin:0 auto;
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
  word-wrap:break-word;
}
.article-body > * + *{margin-top:18px}
.article-body p{font-size:16px;line-height:1.9;margin:0}
.article-body h2{
  position:relative;
  font-size:clamp(20px,2vw,26px);
  line-height:1.4;
  font-weight:700;
  letter-spacing:-.01em;
  margin:40px 0 16px;
  padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:4px;border-radius:2px;background:var(--brand);
}
.article-body h3{font-size:20px;line-height:1.5;font-weight:600;margin:28px 0 12px;color:var(--ink)}
.article-body h4{font-size:17px;line-height:1.6;font-weight:600;margin:22px 0 10px;color:var(--ink-2)}
.article-body strong{font-weight:600;color:var(--ink)}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0}
.article-body ul{list-style:none;margin:0;padding:0}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--brand);
}
.article-body ol{list-style:none;counter-reset:olc;margin:0;padding:0}
.article-body ol li{counter-increment:olc;position:relative;padding-left:34px;margin-bottom:10px}
.article-body ol li::before{
  content:counter(olc);
  position:absolute;left:0;top:.28em;
  width:22px;height:22px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:700;line-height:22px;text-align:center;
}
.article-body img{border-radius:var(--r-img);margin:24px auto;height:auto}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:8px}
.article-body blockquote{
  background:var(--brand-soft);
  border-left:4px solid var(--brand);
  border-radius:12px;
  padding:16px 20px;
  color:var(--ink-2);
  margin:24px 0;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-hover)}
.article-body table{
  display:block;width:100%;overflow-x:auto;
  border-collapse:collapse;
  font-size:15px;
  margin:24px 0;
  -webkit-overflow-scrolling:touch;
}
.article-body th{background:#F2F7FE;color:var(--ink);font-weight:600;text-align:left}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;white-space:nowrap}
.article-body pre{
  background:#F7FAFE;border:1px solid var(--line);border-radius:12px;
  padding:16px;overflow-x:auto;font-size:14px;line-height:1.7;
}

.empty-body{text-align:left;padding:12px 0 4px}
.empty-body p{font-size:16px;color:var(--ink-2);line-height:1.9;margin:14px 0 22px}

/* 文末区域 */
.article-foot{margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.tag-row .tag{
  display:inline-flex;align-items:center;
  height:28px;padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line-2);
  background:#F7FAFE;
  color:var(--ink-2);
  font-size:13px;
  transition:background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.tag-row .tag:hover{background:var(--brand-soft);color:var(--brand);border-color:var(--brand-line)}

.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:36px}
.pn-card{
  display:block;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 20px;
  transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.pn-card:hover{border-color:var(--line-2);box-shadow:var(--sh2);transform:translateY(-2px)}
.pn-label{font-size:13px;color:var(--ink-3);margin-bottom:6px}
.pn-title{
  font-size:16px;font-weight:600;line-height:1.55;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.pn-card:hover .pn-title{color:var(--brand)}

.sec-title{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  margin-bottom:20px;
}
.sec-title h2{font-size:clamp(20px,2vw,26px);font-weight:700;letter-spacing:-.01em;color:var(--ink)}
.sec-title a{font-size:14px;font-weight:600}

.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:36px}
.rel-card{
  display:block;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;
  transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.rel-card:hover{border-color:var(--line-2);box-shadow:var(--sh2);transform:translateY(-2px)}
.rel-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--band)}
.rel-thumb img{width:100%;height:100%;object-fit:cover}
.rel-body{padding:16px}
.rel-title{
  font-size:15px;font-weight:600;line-height:1.55;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-card:hover .rel-title{color:var(--brand)}
.rel-time{font-size:13px;color:var(--ink-3);margin-top:8px;font-variant-numeric:tabular-nums}

.back-line{display:flex;flex-wrap:wrap;gap:12px;padding-top:8px}

/* 侧栏 */
.article-side{display:flex;flex-direction:column;gap:20px}
@media (min-width:1200px){
  .article-side{position:sticky;top:88px;align-self:flex-start}
}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh1);padding:20px;
}
.side-card.highlight{background:var(--brand-soft);border-color:var(--brand-line)}
.side-title{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:14px}
.side-card.highlight .side-title{color:var(--brand-active)}
.side-card p{font-size:14px;line-height:1.8;color:var(--ink-2)}
.side-list{list-style:none;margin:0;padding:0}
.side-list li + li{border-top:1px solid var(--line)}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  min-height:52px;padding:6px 8px 6px 10px;
  border-left:3px solid transparent;
  font-size:15px;color:var(--ink-2);
  transition:background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.side-list a:hover{background:#F7FAFE;color:var(--brand);border-left-color:var(--brand)}
.side-list .go{font-size:13px;color:var(--ink-3)}

.rank-list{list-style:none;margin:0;padding:0}
.rank-list li{display:flex;gap:12px;align-items:flex-start;padding:12px 0}
.rank-list li + li{border-top:1px solid var(--line)}
.rank-num{
  flex:0 0 22px;width:22px;height:22px;border-radius:6px;
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:700;line-height:22px;text-align:center;
  margin-top:4px;
}
.rank-list a{font-size:14px;line-height:1.6;color:var(--ink-2)}
.rank-list a:hover{color:var(--brand)}

/* ============ 页脚 ============ */
.site-footer{background:#0D1B2E;color:#C7D3E2;padding:64px 0 32px;margin-top:0}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:28px;height:28px}
.footer-brand .brand-text{font-size:18px;font-weight:700;color:#fff;white-space:nowrap}
.footer-desc{font-size:14px;line-height:1.9;color:#C7D3E2;max-width:360px}
.footer-meta{font-size:13px;color:#8492A6;margin-top:12px;font-variant-numeric:tabular-nums}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:#C7D3E2}
.footer-links a:hover{color:#8FB4F5}
.footer-contact{font-size:14px;line-height:2;color:#C7D3E2}
.footer-contact b{color:#fff;font-weight:600}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  margin-top:40px;padding-top:20px;
  border-top:1px solid rgba(199,211,226,.16);
  font-size:13px;color:#8492A6;
}

@media (max-width:1199.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767.98px){
  .rel-grid{grid-template-columns:1fr}
  .pn-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .article-main{padding:20px 0 64px}
}
@media (max-width:575.98px){
  .article-title{font-size:26px}
  .seg-nav{display:none}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .pn-card:hover,.rel-card:hover{transform:none}
}

/* roulang page: category2 */
:root{
  --bs-primary:#1A5CD8;
  --bs-primary-rgb:26,92,216;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --bs-body-color:#0E1B2C;
  --bs-body-bg:#F5F8FC;
  --bs-border-radius:10px;
  --bs-border-color:#E4EBF4;
  --bs-link-color:#1A5CD8;
  --bs-link-hover-color:#1449AD;

  --brand:#1A5CD8;
  --brand-hover:#1449AD;
  --brand-active:#0F3A8C;
  --brand-soft:#E9F0FE;
  --brand-line:#C6D8F7;
  --teal:#00A88E;
  --teal-soft:#E4F7F3;
  --orange:#FF7A1A;
  --orange-soft:#FFF1E6;

  --bg:#F5F8FC;
  --card:#FFFFFF;
  --band:#EDF2F9;

  --t1:#0E1B2C;
  --t2:#4E5F76;
  --t3:#8492A6;

  --line:#E4EBF4;
  --line-hover:#D6E2F0;

  --r-card:14px;
  --r-block:18px;
  --r-btn:10px;
  --r-img:12px;

  --sh1:0 1px 2px rgba(16,44,76,.05);
  --sh2:0 8px 24px rgba(16,44,76,.07);
  --sh3:0 18px 44px rgba(16,44,76,.10);

  --ease:cubic-bezier(.2,.6,.2,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.85;
  color:var(--t1);
  background:var(--bg);
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .16s var(--ease);}
a:hover{color:var(--brand-hover);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4{
  margin:0;
  letter-spacing:-0.01em;
  color:var(--t1);
  font-weight:700;
}
h1{font-size:clamp(28px,3.4vw,44px);line-height:1.25;}
h2{font-size:clamp(22px,2.2vw,32px);line-height:1.35;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (max-width:575.98px){
  .container{padding:0 16px;}
}

.section{padding:80px 0;}
.section-sm{padding:56px 0;}
@media (max-width:991.98px){
  .section{padding:64px 0;}
  .section-sm{padding:48px 0;}
}
@media (max-width:575.98px){
  .section{padding:48px 0;}
  .section-sm{padding:40px 0;}
}

.section-head{margin-bottom:24px;}
.section-head p{
  margin-top:10px;
  color:var(--t2);
  max-width:720px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:13px;
  font-weight:500;
  line-height:1;
  margin-bottom:14px;
}

/* ============ Header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh1);}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:68px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--t1);
}
.brand:hover{color:var(--t1);}
.brand-mark{
  width:28px;
  height:28px;
  flex:0 0 28px;
}
.brand-text{
  font-size:17px;
  font-weight:700;
  letter-spacing:-0.01em;
  white-space:nowrap;
}
.seg-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.seg-nav::-webkit-scrollbar{display:none;}
.seg-chip{
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:14px;
  font-weight:500;
  color:var(--t2);
  white-space:nowrap;
  transition:background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.seg-chip:hover{
  background:var(--brand-soft);
  color:var(--brand);
}
.seg-chip.active{
  background:var(--brand-soft);
  color:var(--brand);
  border-color:var(--brand-line);
}
.header-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}

/* ============ Buttons ============ */
.btn-solid,
.btn-outline-brand,
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),box-shadow .24s var(--ease),transform .16s var(--ease);
  white-space:nowrap;
}
.btn-solid{
  background:var(--brand);
  color:#FFFFFF;
}
.btn-solid:hover{
  background:var(--brand-hover);
  color:#FFFFFF;
  box-shadow:var(--sh2);
}
.btn-solid:active{
  background:var(--brand-active);
  transform:translateY(1px);
  box-shadow:none;
}
.btn-outline-brand{
  background:#FFFFFF;
  color:var(--brand);
  border-color:var(--brand-line);
}
.btn-outline-brand:hover{
  color:var(--brand-hover);
  border-color:var(--brand);
  box-shadow:var(--sh1);
}
.btn-outline-brand:active{
  color:var(--brand-active);
  border-color:var(--brand-active);
  transform:translateY(1px);
}
.btn-ghost{
  background:transparent;
  color:var(--brand);
  padding:0 12px;
}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-hover);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-lg{height:48px;padding:0 28px;font-size:16px;}
.btn-solid svg,.btn-outline-brand svg{width:18px;height:18px;flex:0 0 18px;}

.mobile-toggle{
  width:44px;height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line-hover);
  border-radius:var(--r-btn);
  background:#FFFFFF;
  cursor:pointer;
  transition:border-color .16s var(--ease),background .16s var(--ease);
}
.mobile-toggle:hover{border-color:var(--brand-line);background:var(--brand-soft);}
.mobile-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--t1);
  border-radius:2px;
  position:relative;
}
.mobile-toggle span::before,
.mobile-toggle span::after{
  content:"";
  position:absolute;left:0;
  width:18px;height:2px;background:var(--t1);border-radius:2px;
}
.mobile-toggle span::before{top:-6px;}
.mobile-toggle span::after{top:6px;}

.drawer-nav{display:flex;flex-wrap:wrap;gap:8px;}
.drawer-nav .seg-chip{height:38px;}
.offcanvas{
  --bs-offcanvas-width:320px;
  --bs-offcanvas-border-width:0;
}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 20px;
  border-bottom:1px solid var(--line);
}
.drawer-body{padding:20px;}
.drawer-foot{
  margin-top:26px;
  padding-top:20px;
  border-top:1px solid var(--line);
  display:grid;gap:12px;
}
.drawer-foot .hint{font-size:13px;color:var(--t3);line-height:1.7;}

/* ============ Page hero ============ */
.page-hero{
  position:relative;
  background:
    linear-gradient(180deg,#FFFFFF 0%, #F2F7FE 100%);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center right;
  opacity:.12;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}
.hero-pad{padding:64px 0 56px;}
@media (max-width:767.98px){.hero-pad{padding:44px 0 38px;}}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--t3);
  margin-bottom:18px;
  flex-wrap:wrap;
}
.crumb a{color:var(--t2);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#C3CEDC;}
.crumb .now{color:var(--t3);}
.page-hero h1{max-width:900px;}
.hero-lead{
  margin-top:16px;
  font-size:17px;
  line-height:1.8;
  color:var(--t2);
  max-width:760px;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}
.stat-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:34px;
  padding:0 14px;
  border-radius:999px;
  background:#FFFFFF;
  border:1px solid var(--line);
  box-shadow:var(--sh1);
  font-size:13px;
  color:var(--t2);
  font-variant-numeric:tabular-nums;
}
.stat-chip b{color:var(--t1);font-weight:600;}
.dot-live{
  width:8px;height:8px;border-radius:50%;
  background:var(--teal);
  box-shadow:0 0 0 3px var(--teal-soft);
}

/* ============ Filter chips ============ */
.filter-bar{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  padding:16px 18px;
  background:#FFFFFF;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh1);
}
.filter-label{
  font-size:13px;
  color:var(--t3);
  margin-right:4px;
  white-space:nowrap;
}
.filter-chip{
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line-hover);
  background:#FFFFFF;
  color:var(--t2);
  font-size:14px;
  font-weight:500;
  cursor:pointer;
  transition:background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),box-shadow .24s var(--ease);
}
.filter-chip:hover{
  background:var(--brand-soft);
  color:var(--brand);
  border-color:var(--brand-line);
}
.filter-chip.active{
  background:var(--brand);
  border-color:var(--brand);
  color:#FFFFFF;
  box-shadow:var(--sh1);
}

/* ============ Feature split blocks ============ */
.feature-block{
  background:#FFFFFF;
  border:1px solid var(--line);
  border-radius:var(--r-block);
  box-shadow:var(--sh1);
  padding:32px;
  transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.feature-block:hover{
  box-shadow:var(--sh2);
  transform:translateY(-2px);
  border-color:var(--line-hover);
}
.feature-block + .feature-block{margin-top:28px;}
@media (max-width:767.98px){
  .feature-block{padding:20px;}
  .feature-block + .feature-block{margin-top:20px;}
}
.feature-media{
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh2);
  background:var(--band);
}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.feature-copy h2{margin-bottom:14px;}
.feature-copy p{color:var(--t2);}
.feature-list{
  margin-top:18px;
  display:grid;
  gap:12px;
}
.feature-list li{
  position:relative;
  padding-left:20px;
  color:var(--t2);
  font-size:15px;
  line-height:1.75;
}
.feature-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--brand-soft);
  border:2px solid var(--brand);
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;}
.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:13px;
  font-weight:500;
  line-height:1;
}
.tag.teal{background:var(--teal-soft);color:var(--teal);}
.tag.orange{background:var(--orange);color:#FFFFFF;}

/* ============ Version compare ============ */
.compare{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
@media (max-width:767.98px){
  .compare{grid-template-columns:1fr;gap:18px;}
}
.compare-card{
  background:#FFFFFF;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh1);
  overflow:hidden;
  transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.compare-card:hover{box-shadow:var(--sh2);transform:translateY(-2px);}
.compare-head{
  padding:20px 24px;
  color:#FFFFFF;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.compare-head.blue{background:var(--brand);}
.compare-head.green{background:var(--teal);}
.compare-head h3{color:#FFFFFF;font-size:18px;margin:0;}
.compare-head .ver{
  font-size:13px;
  font-variant-numeric:tabular-nums;
  background:rgba(255,255,255,.18);
  border-radius:999px;
  padding:3px 12px;
}
.compare-body{padding:8px 24px 24px;}
.compare-row{
  display:flex;
  align-items:flex-start;
  gap:16px;
  padding:14px 0;
  border-bottom:1px dashed var(--line);
}
.compare-row:last-child{border-bottom:0;}
.compare-row .k{
  flex:0 0 96px;
  font-size:13px;
  color:var(--t3);
  line-height:1.7;
}
.compare-row .v{
  flex:1 1 auto;
  font-size:15px;
  color:var(--t1);
  line-height:1.7;
}
@media (max-width:575.98px){
  .compare-body{padding:8px 16px 16px;}
  .compare-head{padding:16px;}
  .compare-row .k{flex:0 0 76px;}
}

/* ============ Info bar ============ */
.info-bar{
  display:flex;
  align-items:center;
  gap:18px;
  padding:22px 26px;
  background:var(--brand-soft);
  border:1px solid var(--brand-line);
  border-radius:var(--r-block);
}
.info-bar .icon{
  width:44px;height:44px;flex:0 0 44px;
  border-radius:12px;
  background:#FFFFFF;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh1);
}
.info-bar .txt{flex:1 1 auto;}
.info-bar .txt strong{display:block;font-size:16px;color:var(--t1);}
.info-bar .txt span{font-size:14px;color:var(--t2);}
@media (max-width:767.98px){
  .info-bar{flex-wrap:wrap;padding:18px;}
}

/* ============ Release plan ============ */
.plan-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
@media (max-width:991.98px){.plan-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:575.98px){.plan-grid{grid-template-columns:1fr;}}
.plan-card{
  background:#FFFFFF;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh1);
  padding:24px;
  transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.plan-card:hover{box-shadow:var(--sh2);transform:translateY(-2px);border-color:var(--line-hover);}
.plan-card .num{
  width:36px;height:36px;
  border-radius:50%;
  border:2px solid var(--brand-line);
  color:var(--brand);
  font-weight:700;
  font-size:15px;
  display:flex;align-items:center;justify-content:center;
  margin-bottom:16px;
  font-variant-numeric:tabular-nums;
}
.plan-card h3{font-size:18px;margin-bottom:10px;}
.plan-card p{font-size:15px;color:var(--t2);}

/* ============ CTA ============ */
.cta-block{
  background:var(--brand-soft);
  border-radius:var(--r-block);
  padding:48px;
  text-align:center;
  border:1px solid var(--brand-line);
}
@media (max-width:767.98px){.cta-block{padding:28px 20px;}}
.cta-block h2{max-width:720px;margin:0 auto;}
.cta-block p{
  margin:14px auto 0;
  max-width:640px;
  color:var(--t2);
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:center;
  margin-top:26px;
}
.cta-note{
  margin-top:18px;
  font-size:13px;
  color:var(--t3);
  font-variant-numeric:tabular-nums;
}

/* ============ Footer ============ */
.site-footer{
  background:#0D1B2E;
  color:#C7D3E2;
  padding:64px 0 32px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .site-footer{padding:48px 0 24px;}
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{color:#FFFFFF;font-size:17px;font-weight:700;}
.footer-desc{font-size:14px;line-height:1.8;color:#C7D3E2;max-width:360px;}
.footer-meta{margin-top:12px;font-size:13px;color:#8492A6;font-variant-numeric:tabular-nums;}
.footer-title{
  font-size:15px;
  font-weight:600;
  color:#FFFFFF;
  margin-bottom:16px;
}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:#C7D3E2;}
.footer-links a:hover{color:#7FB0FF;}
.footer-contact{font-size:14px;line-height:1.9;color:#C7D3E2;}
.footer-contact b{color:#FFFFFF;font-weight:600;}
.footer-bottom{
  margin-top:48px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#8492A6;
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --brand:#1A5CD8;--brand-hover:#1449AD;--brand-active:#0F3A8C;
  --brand-soft:#E9F0FE;--brand-line:#C6D8F7;
  --teal:#00A88E;--teal-soft:#E4F7F3;
  --accent:#FF7A1A;--accent-hover:#E86A0E;
  --bg:#F5F8FC;--card:#FFFFFF;--band:#EDF2F9;--row:#F7FAFE;
  --ink:#0E1B2C;--ink-2:#4E5F76;--ink-3:#8492A6;
  --line:#E4EBF4;--line-hover:#D6E2F0;
  --r-card:14px;--r-block:18px;--r-btn:10px;--r-img:12px;
  --sh1:0 1px 2px rgba(16,44,76,.05);
  --sh2:0 8px 24px rgba(16,44,76,.07);
  --sh3:0 18px 44px rgba(16,44,76,.10);
  --t:160ms cubic-bezier(.2,.6,.2,1);
  --t2:240ms cubic-bezier(.2,.6,.2,1);
  --bs-primary:#1A5CD8;--bs-primary-rgb:26,92,216;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --bs-body-color:#0E1B2C;--bs-body-bg:#F5F8FC;
  --bs-border-color:#E4EBF4;--bs-border-radius:10px;
  --bs-link-color:#1A5CD8;--bs-link-hover-color:#1449AD;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--bs-body-font-family);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button,input{font:inherit}
a{color:var(--brand);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--brand-hover)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{max-width:1200px;padding-left:24px;padding-right:24px}
@media (max-width:575.98px){.container{padding-left:16px;padding-right:16px}}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow var(--t2)}
.site-header.is-scrolled{box-shadow:var(--sh1)}
.header-top{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:17px;letter-spacing:-.01em;flex:0 0 auto}
.brand:hover{color:var(--brand)}
.brand-mark{width:28px;height:28px;flex:0 0 auto;border-radius:8px}
.seg-nav{display:flex;align-items:center;gap:6px;flex:1 1 auto;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.seg-nav::-webkit-scrollbar{display:none}
.seg-chip{
  height:36px;display:inline-flex;align-items:center;padding:0 16px;border-radius:999px;
  color:var(--ink-2);font-size:15px;white-space:nowrap;border:1px solid transparent;
  transition:background var(--t),color var(--t),border-color var(--t);
}
.seg-chip:hover{background:var(--brand-soft);color:var(--brand)}
.seg-chip.active{background:var(--brand-soft);color:var(--brand);border-color:var(--brand);font-weight:600}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  width:44px;height:44px;border:1px solid var(--line-hover);background:#fff;border-radius:10px;
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:border-color var(--t),background var(--t);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:background var(--t)}
.nav-toggle:hover{border-color:var(--brand);background:var(--brand-soft)}
.nav-toggle:hover span{background:var(--brand)}

/* offcanvas */
.offcanvas{--bs-offcanvas-width:320px;border-left:1px solid var(--line)}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.offcanvas-header .brand-text{font-weight:700;font-size:16px;color:var(--ink)}
.offcanvas .btn-close{--bs-btn-close-focus-shadow:0 0 0 3px rgba(26,92,216,.18)}
.oc-chips{display:flex;flex-wrap:wrap;gap:10px}
.oc-chips .seg-chip{height:44px;padding:0 18px;background:#fff;border-color:var(--line)}
.oc-chips .seg-chip.active{background:var(--brand-soft);border-color:var(--brand);color:var(--brand)}
.oc-note{margin-top:20px;font-size:13px;line-height:2;color:var(--ink-3)}
.oc-note b{color:var(--ink-2);font-weight:600}

/* ---------- buttons ---------- */
.btn{
  border-radius:var(--r-btn);font-weight:600;display:inline-flex;align-items:center;justify-content:center;
  gap:8px;transition:background var(--t),color var(--t),border-color var(--t),box-shadow var(--t),transform var(--t);
  --bs-btn-focus-box-shadow:0 0 0 3px rgba(26,92,216,.18);
}
.btn svg{width:18px;height:18px;flex:0 0 auto}
.btn-brand{background:var(--brand);border:1px solid var(--brand);color:#fff;height:44px;padding:0 22px}
.btn-brand:hover,.btn-brand:focus{background:var(--brand-hover);border-color:var(--brand-hover);color:#fff;box-shadow:var(--sh2)}
.btn-brand:active{background:var(--brand-active)!important;border-color:var(--brand-active)!important;color:#fff!important;transform:translateY(1px)}
.btn-outline-brand{background:#fff;border:1px solid var(--brand);color:var(--brand);height:44px;padding:0 22px}
.btn-outline-brand:hover,.btn-outline-brand:focus{background:var(--brand-soft);border-color:var(--brand-hover);color:var(--brand-hover)}
.btn-outline-brand:active{transform:translateY(1px);color:var(--brand-active)!important;border-color:var(--brand-active)!important}
.btn-accent{background:var(--accent);border:1px solid var(--accent);color:#fff;height:44px;padding:0 22px}
.btn-accent:hover,.btn-accent:focus{background:var(--accent-hover);border-color:var(--accent-hover);color:#fff;box-shadow:var(--sh2)}
.btn-accent:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border:1px solid transparent;color:var(--brand);height:44px;padding:0 14px}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-hover)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-lg-cta{height:48px;padding:0 28px;font-size:17px}

/* ---------- chips ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:500;line-height:1;white-space:nowrap;
}
.chip-cat{background:var(--brand-soft);color:var(--brand);border:1px solid var(--brand-line)}
.chip-state{background:var(--teal-soft);color:var(--teal)}
.chip-version{background:var(--accent);color:#fff}
.chip-plain{background:#fff;border:1px solid var(--line);color:var(--ink-2)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--brand-line);color:var(--brand);font-size:13px;font-weight:600;
}

/* ---------- sections ---------- */
.section{padding:80px 0}
.section-sm{padding:48px 0}
.bg-band{background:var(--band)}
@media (max-width:991.98px){.section{padding:48px 0}.section-sm{padding:36px 0}}
.section-head{margin-bottom:24px}
@media (max-width:575.98px){.section-head{margin-bottom:16px}}
.h2-title{font-size:clamp(22px,2.2vw,32px);line-height:1.35}
.section-sub{margin-top:10px;font-size:15px;color:var(--ink-2);max-width:720px}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* ---------- inner hero ---------- */
.inner-hero{position:relative;overflow:hidden;background:#F7FAFE;border-bottom:1px solid var(--line);padding:64px 0 72px}
.inner-hero .hero-bg{
  position:absolute;inset:0;background-image:url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;opacity:.12;pointer-events:none;
}
.inner-hero .container{position:relative;z-index:1}
.inner-hero h1{font-size:clamp(28px,3.4vw,44px);line-height:1.25;margin-top:18px;max-width:640px}
.hero-sub{margin-top:16px;font-size:17px;line-height:1.8;color:var(--ink-2);max-width:600px}
@media (max-width:991.98px){.inner-hero{padding:48px 0 56px}}
.search-box{
  display:flex;align-items:center;gap:12px;height:48px;max-width:520px;margin-top:24px;
  background:#fff;border:1px solid var(--line-hover);border-radius:10px;padding:0 16px;box-shadow:var(--sh1);
  transition:border-color var(--t),box-shadow var(--t);
}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(26,92,216,.15)}
.search-box svg{width:18px;height:18px;flex:0 0 auto;color:var(--ink-3)}
.search-box input{flex:1 1 auto;height:100%;border:0;outline:0;background:transparent;font-size:15px;color:var(--ink)}
.search-box input::placeholder{color:var(--ink-3)}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.hero-shot{position:relative}
.hero-shot img{border-radius:16px;border:1px solid var(--line);box-shadow:var(--sh3);width:100%;object-fit:cover;aspect-ratio:16/11}
.hero-badge{
  position:absolute;left:-12px;bottom:-16px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh2);padding:12px 16px;display:flex;align-items:center;gap:12px;
}
.hero-badge .dot{width:10px;height:10px;border-radius:999px;background:var(--teal);flex:0 0 auto}
.hero-badge .txt{font-size:13px;color:var(--ink-2);line-height:1.5}
.hero-badge .txt b{display:block;font-size:15px;color:var(--ink)}
@media (max-width:575.98px){.hero-badge{left:8px;bottom:-14px;padding:10px 12px}}

/* ---------- topic chips ---------- */
.topic-bar{display:flex;flex-wrap:wrap;gap:10px}
.topic-chip{
  height:36px;padding:0 16px;border-radius:999px;background:#fff;border:1px solid var(--line);
  color:var(--ink-2);font-size:14px;font-weight:500;display:inline-flex;align-items:center;gap:6px;
  cursor:pointer;transition:all var(--t);
}
.topic-chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.topic-chip.active{background:var(--brand);border-color:var(--brand);color:#fff}
.topic-chip .cnt{font-size:12px;color:var(--ink-3)}
.topic-chip.active .cnt{color:rgba(255,255,255,.8)}

/* ---------- rank list ---------- */
.rank-list{background:var(--card);border:1px solid var(--line);border-radius:var(--r-block);box-shadow:var(--sh1);overflow:hidden;height:100%}
.rank-item{
  display:flex;align-items:center;gap:16px;min-height:56px;padding:14px 20px;position:relative;
  border-bottom:1px solid var(--line);color:var(--ink);transition:background var(--t),color var(--t);
}
.rank-item:last-child{border-bottom:0}
.rank-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:transparent;transition:background var(--t)}
.rank-item:hover{background:var(--row);color:var(--brand)}
.rank-item:hover::before{background:var(--brand)}
.rank-num{
  width:26px;height:26px;border-radius:999px;display:grid;place-items:center;flex:0 0 auto;
  background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
}
.rank-title{flex:1 1 auto;font-size:15px;font-weight:600;line-height:1.6}
.rank-tag{font-size:12px;color:var(--ink-3);white-space:nowrap}
@media (max-width:575.98px){.rank-item{gap:12px;padding:14px 16px}.rank-tag{display:none}}

/* ---------- faq / accordion ---------- */
.accordion{
  --bs-accordion-bg:#fff;--bs-accordion-color:var(--ink);
  --bs-accordion-border-color:var(--line);--bs-accordion-border-radius:var(--r-card);
  --bs-accordion-inner-border-radius:var(--r-card);
  --bs-accordion-btn-padding-y:18px;--bs-accordion-btn-padding-x:20px;
  --bs-accordion-body-padding-x:20px;--bs-accordion-body-padding-y:0;
  --bs-accordion-active-bg:#fff;--bs-accordion-active-color:var(--brand);
  --bs-accordion-btn-focus-box-shadow:0 0 0 3px rgba(26,92,216,.15);
}
.accordion-item{
  border:1px solid var(--line)!important;border-radius:var(--r-card)!important;overflow:hidden;
  background:#fff;box-shadow:var(--sh1);margin-bottom:12px;
}
.accordion-item:last-child{margin-bottom:0}
.accordion-header{margin:0}
.accordion-button{
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;background:#fff;
  border-radius:var(--r-card)!important;
}
.accordion-button:not(.collapsed){color:var(--brand);box-shadow:inset 4px 0 0 var(--brand)!important;background:#fff}
.accordion-button:focus{z-index:3}
.accordion-button::after{
  content:"";background-image:none;width:10px;height:10px;flex:0 0 auto;margin-left:auto;
  border-right:2px solid var(--ink-3);border-bottom:2px solid var(--ink-3);
  transform:rotate(45deg);transition:transform var(--t2),border-color var(--t);
}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg);border-color:var(--brand)}
.accordion-body{padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--ink-2)}
.accordion-body strong{color:var(--ink);font-weight:600}

/* ---------- steps ---------- */
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:991.98px){.step-grid{grid-template-columns:1fr 1fr}}
@media (max-width:575.98px){.step-grid{grid-template-columns:1fr}}
.step-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh1);
  transition:box-shadow var(--t2),transform var(--t2),border-color var(--t);
}
.step-card:hover{box-shadow:var(--sh2);transform:translateY(-2px);border-color:var(--line-hover)}
.step-num{
  width:36px;height:36px;border-radius:999px;border:2px solid var(--brand-line);color:var(--brand);
  display:grid;place-items:center;font-weight:700;font-size:15px;margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.step-card h3{font-size:18px;font-weight:600;line-height:1.5}
.step-card p{margin-top:8px;font-size:15px;color:var(--ink-2)}

/* ---------- contact ---------- */
.contact-card{
  background:var(--brand-soft);border:1px solid var(--brand-line);border-radius:var(--r-block);
  padding:32px;display:flex;flex-direction:column;gap:16px;height:100%;
}
.contact-card h3{font-size:20px;font-weight:600}
.contact-card p{font-size:15px;color:var(--ink-2)}
.contact-list{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--ink-2)}
.contact-list b{color:var(--ink);font-weight:600}
.contact-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:auto}
@media (max-width:991.98px){.contact-card{padding:24px}}

/* ---------- gallery / media ---------- */
.media-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh1);
  transition:box-shadow var(--t2),transform var(--t2);height:100%;
}
.media-card:hover{box-shadow:var(--sh2);transform:translateY(-2px)}
.media-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.media-body{padding:20px}
.media-body h3{font-size:18px;font-weight:600}
.media-body p{margin-top:8px;font-size:14px;color:var(--ink-2)}

/* ---------- cta band ---------- */
.cta-band{background:var(--brand-soft);border:1px solid var(--brand-line);border-radius:var(--r-block);padding:48px;text-align:center}
.cta-band h2{font-size:clamp(22px,2.2vw,32px)}
.cta-band p{margin-top:12px;font-size:15px;color:var(--ink-2);max-width:620px;margin-left:auto;margin-right:auto}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:24px}
.cta-note{margin-top:16px;font-size:13px;color:var(--ink-3)}
@media (max-width:575.98px){.cta-band{padding:32px 20px}}

/* ---------- footer ---------- */
.site-footer{background:#0D1B2E;padding:64px 0 32px;color:#C7D3E2}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
@media (max-width:991.98px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px}}
@media (max-width:575.98px){.footer-grid{grid-template-columns:1fr}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-text{color:#fff;font-weight:700;font-size:17px;letter-spacing:-.01em}
.footer-desc{font-size:14px;line-height:1.8;color:#C7D3E2;max-width:340px}
.footer-meta{margin-top:10px;font-size:13px;color:#8492A6;font-variant-numeric:tabular-nums}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{color:#C7D3E2;font-size:14px}
.footer-links a:hover{color:#9CBEF7}
.footer-contact{font-size:14px;line-height:2;color:#C7D3E2}
.footer-contact b{color:#fff;font-weight:600}
.footer-bottom{
  margin-top:40px;padding-top:24px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:#8492A6;
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .step-card:hover,.media-card:hover{transform:none}
}