/* roulang page: index */
:root{
  --brand:#FF4D2D;
  --brand-deep:#C8321A;
  --accent:#00D1C1;
  --accent-deep:#087F76;
  --ink:#15161C;
  --ink-2:#23252E;
  --bg:#FAF8F5;
  --surface:#FFFFFF;
  --line:#E7E2DA;
  --muted:#6B6A66;
  --warn:#FFC53D;
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:10px;
  --shadow-sm:0 1px 2px rgba(21,22,28,.06);
  --shadow-md:0 8px 24px rgba(21,22,28,.10);
  --shadow-lg:0 14px 32px rgba(21,22,28,.14);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.85;color:var(--ink);background:var(--bg);
  font-feature-settings:"tnum";
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,transform .18s ease-out;}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
input,textarea{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--ink);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.logo{display:flex;flex-direction:column;line-height:1.2;flex-shrink:0;}
.logo-main{font-size:19px;font-weight:800;letter-spacing:-.3px;color:#fff;}
.logo-main em{font-style:normal;color:var(--brand);}
.logo-sub{font-size:11px;letter-spacing:.6px;color:rgba(255,255,255,.6);margin-top:3px;font-weight:500;}
.nav-links{display:flex;align-items:center;gap:30px;}
.nav-links>a{
  position:relative;font-size:16px;font-weight:600;color:rgba(255,255,255,.82);padding:6px 0;
}
.nav-links>a::after{
  content:"";position:absolute;left:20%;right:20%;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:center;transition:transform .18s ease-out;
}
.nav-links>a:hover,.nav-links>a.active{color:#fff;}
.nav-links>a:hover::after,.nav-links>a.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:16px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-weight:700;font-size:15px;line-height:1;
  padding:14px 22px;transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#fff;box-shadow:0 4px 14px rgba(255,77,45,.24);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,77,45,.35);}
.btn-primary:active{transform:translateY(0);box-shadow:0 3px 10px rgba(255,77,45,.28);}
.btn-ghost{
  background:transparent;border:1.5px solid var(--line);color:var(--ink);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:rgba(255,77,45,.06);}
.btn-ghost-light{background:transparent;border:1.5px solid rgba(255,255,255,.24);color:#fff;}
.btn-ghost-light:hover{background:#fff;color:var(--brand);border-color:#fff;}
.btn-sm{padding:10px 16px;font-size:13.5px;}
.btn-white{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm);}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(0,0,0,.18);}
.mega{position:relative;}
.mega-trigger{
  display:flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:rgba(255,255,255,.82);
  padding:10px 4px;
}
.mega-trigger i{font-size:11px;transition:transform .18s ease-out;}
.mega:hover .mega-trigger,.mega:focus-within .mega-trigger{color:#fff;}
.mega:hover .mega-trigger i,.mega:focus-within .mega-trigger i{transform:rotate(180deg);}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 16px);width:800px;
  background:var(--surface);border-radius:16px;box-shadow:0 24px 48px rgba(21,22,28,.18);
  padding:26px;display:grid;grid-template-columns:1fr 1.1fr 1fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .16s ease-out,transform .16s ease-out,visibility .16s;
  border:1px solid var(--line);
}
.mega:hover .mega-panel,.mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-col-title{font-size:12.5px;font-weight:700;letter-spacing:1px;color:var(--muted);margin-bottom:14px;}
.mega-list a{
  display:flex;align-items:center;gap:10px;font-size:14.5px;font-weight:600;color:var(--ink);
  padding:9px 0;border-bottom:1px dashed rgba(21,22,28,.08);
}
.mega-list a:last-child{border-bottom:none;}
.mega-list a:hover{color:var(--brand-deep);transform:translateX(2px);}
.dot{width:7px;height:7px;border-radius:50%;background:var(--brand);flex-shrink:0;}
.dot.cyan{background:var(--accent);}
.mega-news a{display:block;padding:9px 0;border-bottom:1px dashed rgba(21,22,28,.08);}
.mega-news a:last-child{border-bottom:none;}
.mega-news .mt{font-size:14px;font-weight:600;color:var(--ink);display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.mega-news .md{font-size:12px;color:var(--muted);}
.mega-news a:hover .mt{color:var(--brand-deep);}
.mega-card{
  background:var(--ink);border-radius:14px;padding:20px;color:#fff;display:flex;flex-direction:column;justify-content:space-between;gap:14px;
}
.mega-card h4{font-size:15.5px;font-weight:700;color:#fff;}
.mega-card p{font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.66);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid rgba(255,255,255,.2);
  color:#fff;font-size:17px;align-items:center;justify-content:center;
}
.drawer{
  display:none;position:fixed;inset:60px 0 0 0;z-index:70;background:var(--ink);
  padding:24px 20px 100px;overflow-y:auto;
}
.drawer.open{display:block;}
.drawer-link{
  display:block;padding:15px 4px;font-size:16px;font-weight:600;color:rgba(255,255,255,.86);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.drawer-link.active,.drawer-link:hover{color:var(--brand);}
.drawer-foot{position:fixed;left:0;right:0;bottom:0;padding:16px 20px;background:var(--ink);border-top:1px solid rgba(255,255,255,.08);}
.drawer-foot .btn{width:100%;}

/* ============ Hero ============ */
.hero{
  background:var(--ink);color:#fff;overflow:hidden;position:relative;
  padding:56px 0 64px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(900px 420px at 80% 10%,rgba(255,77,45,.20),transparent 70%),
             radial-gradient(700px 380px at 5% 90%,rgba(0,209,193,.14),transparent 70%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:55% 45%;gap:44px;align-items:center;min-height:540px;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:7px 14px;
  background:rgba(255,77,45,.14);color:#FFB4A3;font-size:13px;font-weight:600;border:1px solid rgba(255,77,45,.28);
  margin-bottom:20px;
}
.hero-badge .live{width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(255,77,45,.2);}
.hero h1{
  font-size:clamp(30px,4.2vw,50px);line-height:1.15;font-weight:800;letter-spacing:-.5px;color:#fff;
  margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{font-size:16.5px;line-height:1.85;color:rgba(255,255,255,.72);max-width:560px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.trust-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px 22px;
  padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
}
.trust-item{display:flex;flex-direction:column;gap:2px;}
.trust-item .tk{font-size:11.5px;letter-spacing:.6px;color:rgba(255,255,255,.5);}
.trust-item .tv{font-size:14.5px;font-weight:700;color:#fff;}
.trust-item .tv.ok{color:var(--accent);}
.hero-visual{
  position:relative;min-height:420px;border-radius:var(--radius-card);overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  box-shadow:0 24px 60px rgba(0,0,0,.42);
  border:1px solid rgba(255,255,255,.1);
}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(21,22,28,.35) 0%,rgba(21,22,28,.78) 100%);
}
.entry-card{
  position:absolute;left:22px;right:22px;bottom:22px;z-index:2;
  background:var(--surface);border-radius:14px;padding:18px 20px;color:var(--ink);
  box-shadow:0 14px 32px rgba(0,0,0,.28);
}
.entry-card .ec-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:4px 11px;
  font-size:12.5px;font-weight:700;line-height:1.6;
}
.badge-brand{background:rgba(255,77,45,.10);color:var(--brand-deep);}
.badge-cyan{background:rgba(0,209,193,.12);color:var(--accent-deep);}
.badge-warn{background:rgba(255,197,61,.18);color:#8A5B00;}
.entry-card .ec-line{display:flex;justify-content:space-between;font-size:13.5px;color:var(--muted);padding:5px 0;}
.entry-card .ec-line b{color:var(--ink);font-weight:700;}
.entry-card .btn{width:100%;margin-top:14px;}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:1.4px;
  color:var(--brand-deep);margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px;}
h2.sec-title{font-size:clamp(24px,2.8vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.4px;color:var(--ink);}
.sec-desc{font-size:15px;color:var(--muted);margin-top:12px;max-width:660px;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:700;color:var(--brand-deep);
  border-bottom:1px dashed var(--brand);padding-bottom:2px;transition:gap .18s ease-out,color .18s ease-out;
}
.text-link:hover{gap:10px;color:var(--brand);border-bottom-style:solid;}

/* ============ Bento ============ */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--brand);}
.card:hover .card-title{color:var(--brand-deep);}
.card-title{font-size:20px;line-height:1.4;font-weight:700;color:var(--ink);transition:color .18s ease-out;margin-bottom:10px;}
.card p{font-size:14.5px;line-height:1.8;color:var(--muted);}
.icon-box{
  width:44px;height:44px;border-radius:12px;background:rgba(255,77,45,.10);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px;
}
.icon-box.cyan{background:rgba(0,209,193,.12);color:var(--accent-deep);}
.bento-lg{grid-column:1/3;display:flex;flex-direction:column;gap:18px;}
.bento-lg .bl-img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-img);
  border:1px solid var(--line);
}
.bento-lg ul li{
  display:flex;gap:10px;font-size:14.5px;color:var(--muted);padding:6px 0;
}
.bento-lg ul li i{color:var(--brand);font-size:12px;margin-top:7px;}
.bento-sm1{grid-column:3/4;}
.bento-sm2{grid-column:1/2;}
.bento-stat{
  grid-column:2/4;background:var(--ink);border-radius:var(--radius-card);padding:26px;color:#fff;
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:center;
}
.bento-stat .bs-num{font-size:32px;font-weight:800;color:var(--brand);line-height:1.1;font-variant-numeric:tabular-nums;}
.bento-stat .bs-lab{font-size:13px;color:rgba(255,255,255,.66);margin-top:4px;}

/* ============ 使用场景 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative;}
.step{position:relative;padding-right:24px;}
.step::after{
  content:"";position:absolute;right:6px;top:26px;width:calc(100% - 60px);height:0;
  border-top:1px dashed var(--line);
}
.step:last-child::after{display:none;}
.step-num{
  font-size:40px;font-weight:800;line-height:1;color:transparent;
  -webkit-text-stroke:1.5px var(--brand);letter-spacing:-1px;margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.step h3{font-size:19px;font-weight:700;color:var(--ink);margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--muted);}
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;margin-top:64px;}
.split-img{
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-md);
}
.split-img img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.split h3{font-size:26px;font-weight:700;line-height:1.3;margin-bottom:16px;}
.split p{font-size:15px;color:var(--muted);margin-bottom:16px;}
.compare-list li{
  display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:14.5px;
}
.compare-list li:last-child{border-bottom:none;}
.compare-list li i{color:var(--accent-deep);margin-top:6px;font-size:12px;}
.compare-list li b{color:var(--ink);font-weight:700;}

/* ============ 深色数据区 ============ */
.dark-section{background:var(--ink);color:#fff;padding:88px 0;}
.dark-section h2{color:#fff;}
.dark-section .sec-desc{color:rgba(255,255,255,.66);}
.dark-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:48px;align-items:start;}
.stat-list{display:grid;grid-template-columns:1fr 1fr;gap:32px 24px;}
.stat-item .sn{font-size:42px;font-weight:800;color:var(--brand);line-height:1.1;font-variant-numeric:tabular-nums;}
.stat-item .sl{font-size:13px;color:rgba(255,255,255,.6);margin-top:6px;}
.quote-grid{display:grid;gap:18px;}
.quote-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-card);
  padding:24px;position:relative;
}
.quote-card::before{
  content:"“";position:absolute;top:6px;left:18px;font-size:52px;line-height:1;color:rgba(255,77,45,.45);font-family:Georgia,serif;
}
.quote-card p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.82);margin:22px 0 18px;}
.quote-user{display:flex;align-items:center;gap:10px;}
.avatar{
  width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#fff;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.quote-user .qn{font-size:13.5px;font-weight:700;color:#fff;}
.quote-user .qi{font-size:12px;color:rgba(255,255,255,.55);}

/* ============ 版本对比 ============ */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;padding-top:12px;}
.plan{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 24px;display:flex;flex-direction:column;position:relative;box-shadow:var(--shadow-sm);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.plan.recommend{border:2px solid var(--brand);transform:translateY(-8px);box-shadow:var(--shadow-lg);}
.plan.recommend:hover{transform:translateY(-12px);}
.plan-flag{
  position:absolute;top:-13px;right:20px;background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#fff;font-size:12px;font-weight:700;padding:5px 13px;border-radius:999px;box-shadow:0 6px 14px rgba(255,77,45,.35);
}
.plan h3{font-size:19px;font-weight:700;margin-bottom:6px;}
.plan .plan-note{font-size:13px;color:var(--muted);margin-bottom:18px;}
.price{display:flex;align-items:baseline;gap:5px;margin-bottom:20px;}
.price .pv{font-size:38px;font-weight:800;letter-spacing:-1px;font-variant-numeric:tabular-nums;}
.price .pu{font-size:13.5px;color:var(--muted);font-weight:600;}
.plan ul{flex:1;margin-bottom:22px;}
.plan ul li{display:flex;gap:10px;font-size:14px;color:var(--muted);padding:7px 0;}
.plan ul li i{color:var(--accent-deep);font-size:12px;margin-top:7px;}
.plan .btn{width:100%;}

/* ============ 最新信息 CMS ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-sm);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--brand);}
.news-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out;}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-thumb .badge{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);box-shadow:var(--shadow-sm);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-body h3{
  font-size:17px;line-height:1.5;font-weight:700;color:var(--ink);margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover .news-body h3{color:var(--brand-deep);}
.news-body p{
  font-size:14px;line-height:1.75;color:var(--muted);margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);padding-top:14px;border-top:1px dashed var(--line);
}
.news-meta .more{color:var(--brand-deep);font-weight:700;}
.empty-box{
  border:1px dashed var(--line);border-radius:var(--radius-card);padding:56px 24px;text-align:center;
  background:rgba(255,255,255,.5);
}
.empty-box i{font-size:28px;color:var(--line);margin-bottom:14px;display:block;}
.empty-box p{font-size:15px;color:var(--muted);margin-bottom:18px;}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
details.faq{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:0 20px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
details.faq:hover{border-color:rgba(255,77,45,.4);}
details.faq[open]{border-color:var(--brand);box-shadow:var(--shadow-md);}
details.faq summary{
  list-style:none;cursor:pointer;padding:18px 30px 18px 0;position:relative;
  font-size:15.5px;font-weight:700;color:var(--ink);line-height:1.6;
}
details.faq summary::-webkit-details-marker{display:none;}
details.faq summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;
  position:absolute;right:0;top:22px;color:var(--muted);transition:transform .18s ease-out,color .18s ease-out;
}
details.faq[open] summary{color:var(--brand-deep);}
details.faq[open] summary::after{transform:rotate(180deg);color:var(--brand);}
details.faq .faq-answer{
  font-size:15px;line-height:1.85;color:var(--muted);padding:0 0 20px;border-top:1px dashed var(--line);
  padding-top:14px;
}

/* ============ 底部 CTA ============ */
.cta-band{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
  border-radius:20px;padding:40px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:0 18px 40px rgba(200,50,26,.28);
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:800;line-height:1.3;color:#fff;margin-bottom:10px;}
.cta-band p{font-size:15px;color:rgba(255,255,255,.86);}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#fff;border-top:1px solid rgba(255,255,255,.08);padding:64px 0 0;margin-top:88px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-logo-main{font-size:18px;font-weight:800;color:#fff;}
.footer-logo-main em{font-style:normal;color:var(--brand);}
.footer-logo-sub{font-size:11.5px;letter-spacing:.6px;color:rgba(255,255,255,.55);margin-top:4px;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);margin:16px 0 18px;max-width:300px;}
.footer-contact{font-size:13.5px;color:rgba(255,255,255,.6);line-height:2;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.4px;}
.footer-col a{
  display:inline-block;font-size:14px;color:rgba(255,255,255,.68);padding:5px 0;
  border-bottom:1px solid transparent;transition:color .18s ease-out,border-color .18s ease-out;
}
.footer-col a:hover{color:#fff;border-bottom-color:var(--brand);}
.footer-col li{list-style:none;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.08);padding:20px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .nav-links,.mega,.nav-right .btn{display:none;}
  .nav-toggle{display:flex;}
  .nav-wrap{height:60px;}
  .drawer{inset:60px 0 0 0;}
  .section{padding:64px 0;}
  .hero{padding:40px 0 48px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;min-height:auto;}
  .hero-visual{min-height:300px;}
  .bento{grid-template-columns:repeat(2,1fr);}
  .bento-lg{grid-column:1/3;}
  .bento-sm1{grid-column:1/2;}
  .bento-sm2{grid-column:2/3;}
  .bento-stat{grid-column:1/3;grid-template-columns:repeat(3,1fr);}
  .steps{grid-template-columns:1fr;gap:28px;}
  .step{padding-left:22px;padding-right:0;border-left:2px dashed var(--line);}
  .step::after{display:none;}
  .step-num{margin-bottom:10px;}
  .split{grid-template-columns:1fr;gap:28px;margin-top:44px;}
  .dark-grid{grid-template-columns:1fr;gap:36px;}
  .plans{grid-template-columns:1fr;gap:20px;}
  .plan.recommend{transform:none;}
  .plan.recommend:hover{transform:translateY(-4px);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;text-align:left;padding:32px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .dark-section{padding:56px 0;}
  .split h3{font-size:22px;}
  .stat-item .sn{font-size:34px;}
  .faq-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .bento{grid-template-columns:1fr;}
  .bento-lg,.bento-sm1,.bento-sm2,.bento-stat{grid-column:1/2;}
  .bento-stat{grid-template-columns:1fr;gap:14px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .quote-card p{font-size:14px;}
}
@media (max-width:520px){
  .container{padding:0 20px;}
  body{font-size:15px;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .trust-bar{gap:12px 18px;}
  .trust-item .tv{font-size:13.5px;}
  .hero-visual{min-height:260px;}
  .entry-card{left:14px;right:14px;bottom:14px;padding:14px 16px;}
  .card{padding:18px;}
  .plan{padding:22px 18px;}
  .price .pv{font-size:32px;}
  .cta-band{padding:26px 22px;border-radius:16px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .section-head{margin-bottom:28px;}
}

/* roulang page: article */
:root{
  --brand:#FF4D2D;
  --brand-deep:#C8321A;
  --accent:#00D1C1;
  --ink:#15161C;
  --ink-2:#23252E;
  --bg:#FAF8F5;
  --surface:#FFFFFF;
  --line:#E7E2DA;
  --muted:#6B6A66;
  --warn:#FFC53D;
  --r-card:18px;
  --r-img:14px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(21,22,28,.06);
  --sh-2:0 8px 24px rgba(21,22,28,.10);
  --sh-3:0 14px 32px rgba(21,22,28,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body.site-body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  font-feature-settings:"tnum";
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease)}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:var(--ink);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;gap:24px;
}
.logo{display:flex;flex-direction:column;line-height:1.15;flex:0 0 auto}
.logo-main{
  font-size:20px;font-weight:800;letter-spacing:-.3px;color:#fff;
}
.logo-main em{font-style:normal;color:var(--brand)}
.logo-sub{
  font-size:11px;letter-spacing:.14em;color:rgba(255,255,255,.6);margin-top:3px;
}
.nav-links{display:flex;align-items:center;gap:26px;flex:1 1 auto;justify-content:center}
.nav-links > a{
  position:relative;font-size:15.5px;font-weight:600;color:rgba(255,255,255,.82);
  padding:6px 0;white-space:nowrap;
}
.nav-links > a::after{
  content:"";position:absolute;left:20%;right:20%;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:center;transition:transform .18s var(--ease);
}
.nav-links > a:hover{color:#fff}
.nav-links > a:hover::after,
.nav-links > a.active::after{transform:scaleX(1)}
.nav-links > a.active{color:#fff}
.nav-right{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;color:#fff;
  border:1px solid rgba(255,255,255,.18);align-items:center;justify-content:center;
  transition:background .18s var(--ease),border-color .18s var(--ease);
}
.nav-toggle:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.32)}

/* mega */
.mega{position:relative}
.mega-trigger{
  display:flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:rgba(255,255,255,.82);
  padding:8px 10px;border-radius:8px;transition:color .18s var(--ease),background .18s var(--ease);
}
.mega-trigger:hover{color:#fff;background:rgba(255,255,255,.07)}
.mega-trigger i{font-size:11px;transition:transform .18s var(--ease)}
.mega:hover .mega-trigger i,.mega.open .mega-trigger i{transform:rotate(180deg)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);
  width:820px;max-width:calc(100vw - 40px);
  background:var(--surface);border-radius:16px;
  box-shadow:0 24px 48px rgba(21,22,28,.18);
  border:1px solid var(--line);
  padding:22px;
  display:grid;grid-template-columns:1fr 1fr 260px;gap:22px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s var(--ease);
}
.mega:hover .mega-panel,.mega.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col-title{
  font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--muted);
  text-transform:uppercase;margin-bottom:12px;
}
.mega-list{display:flex;flex-direction:column;gap:2px}
.mega-list a{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;border-radius:9px;font-size:14.5px;font-weight:600;color:var(--ink-2);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.mega-list a:hover{background:rgba(255,77,45,.07);color:var(--brand-deep)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--brand);flex:0 0 auto}
.dot.cyan{background:var(--accent)}
.mega-news{display:flex;flex-direction:column;gap:10px}
.mega-news a{display:block;padding:10px;border-radius:10px;border:1px solid var(--line)}
.mega-news a:hover{border-color:rgba(255,77,45,.4);background:rgba(255,77,45,.04)}
.mega-news .mt{display:block;font-size:14px;font-weight:600;line-height:1.5;color:var(--ink)}
.mega-news .md{display:block;font-size:12.5px;color:var(--muted);margin-top:4px}
.mega-card{
  background:var(--ink-2);border-radius:14px;padding:18px;
  display:flex;flex-direction:column;justify-content:space-between;gap:16px;
}
.mega-card h4{color:#fff;font-size:16px;font-weight:700}
.mega-card p{color:rgba(255,255,255,.7);font-size:13px;line-height:1.7;margin-top:6px}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:15px;border-radius:var(--r-btn);
  padding:12px 22px;line-height:1.2;white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),
             background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#fff;box-shadow:var(--sh-1);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,77,45,.35);color:#fff}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(255,77,45,.24)}
.btn-ghost{
  background:transparent;border:1.5px solid var(--line);color:var(--ink);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-deep);background:rgba(255,77,45,.06)}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:9px}
.btn-white{background:#fff;color:var(--ink)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(21,22,28,.22);color:var(--brand-deep)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--brand-deep);border-bottom:1px dashed rgba(200,50,26,.5);
  transition:border-color .18s var(--ease),transform .18s var(--ease),color .18s var(--ease);
}
.text-link:hover{border-bottom-style:solid;transform:translateX(2px);color:var(--brand)}
.text-link i{font-size:11px}

/* ============ breadcrumb ============ */
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:nowrap;
  font-size:13px;color:var(--muted);
  padding:26px 0 0;overflow:hidden;white-space:nowrap;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb .sep{color:#C6C0B6}
.breadcrumb .current{color:var(--muted);max-width:46vw;overflow:hidden;text-overflow:ellipsis}

/* ============ article layout ============ */
.article-page{padding-bottom:88px}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;
  align-items:start;margin-top:22px;
}
.article-main{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);
  padding:36px 40px 32px;min-width:0;
}
.article-head{border-bottom:1px solid var(--line);padding-bottom:22px;margin-bottom:28px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:700;line-height:1;
  padding:7px 13px;border-radius:999px;
}
.badge-brand{background:rgba(255,77,45,.10);color:#C8321A}
.badge-cyan{background:rgba(0,209,193,.12);color:#087F76}
.badge-soft{background:#F1EEE9;color:var(--muted)}
.article-title{
  font-size:clamp(26px,3.4vw,34px);line-height:1.35;font-weight:800;
  letter-spacing:-.4px;color:var(--ink);margin-top:16px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  margin-top:16px;font-size:13.5px;color:var(--muted);
}
.article-meta i{font-size:12px;color:var(--brand);margin-right:5px}
.meta-sep{width:4px;height:4px;border-radius:50%;background:#D6D0C6}

.article-body{max-width:760px}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 20px;font-size:16px;line-height:1.9;color:#2B2C33}
.article-body h2{
  font-size:24px;font-weight:700;line-height:1.4;color:var(--ink);
  margin:40px 0 16px;padding-left:12px;border-left:4px solid var(--brand);
  letter-spacing:-.2px;
}
.article-body h3{font-size:19px;font-weight:700;line-height:1.45;margin:28px 0 12px;color:var(--ink)}
.article-body h4{font-size:17px;font-weight:700;margin:22px 0 10px}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:4px}
.article-body ul li,.article-body ol li{
  position:relative;padding-left:20px;margin-bottom:9px;
  font-size:16px;line-height:1.85;color:#2B2C33;
}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:11px;
  width:7px;height:7px;border-radius:50%;background:var(--brand);
}
.article-body ol{counter-reset:li}
.article-body ol li::before{
  counter-increment:li;content:counter(li);
  position:absolute;left:0;top:0;color:var(--brand-deep);
  font-weight:800;font-size:14px;line-height:1.9;
}
.article-body ol li{padding-left:22px}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--bg);
  border-left:3px solid var(--brand);border-radius:0 12px 12px 0;
  color:#3A3B42;font-size:15.5px;line-height:1.85;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:24px auto;border:1px solid var(--line)}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-body a{color:var(--brand-deep);border-bottom:1px dashed rgba(200,50,26,.5)}
.article-body a:hover{border-bottom-style:solid;color:var(--brand)}
.article-body code{
  background:#F1EEE9;padding:2px 6px;border-radius:4px;
  font-size:14px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
}
.article-body pre{
  background:var(--ink-2);color:#F3F1EC;padding:16px 18px;border-radius:12px;
  overflow-x:auto;margin:22px 0;font-size:14px;line-height:1.7;
}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.article-body thead th{
  background:rgba(0,0,0,.03);font-weight:700;text-align:left;
  padding:11px 14px;border-bottom:1px solid var(--line);color:var(--ink);
}
.article-body tbody td{padding:11px 14px;border-bottom:1px solid var(--line);color:#3A3B42}
.article-body tbody tr:nth-child(even){background:rgba(0,0,0,.015)}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-body strong{font-weight:700;color:var(--ink)}

/* tags */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:38px}
.tag-row .tag-label{font-size:13px;color:var(--muted);margin-right:2px}
.tag{
  display:inline-flex;align-items:center;font-size:13px;font-weight:600;
  padding:6px 14px;border-radius:999px;background:#F4F1EC;color:#4B4A46;
  border:1px solid var(--line);
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.tag:hover{background:rgba(255,77,45,.10);color:#C8321A;border-color:rgba(255,77,45,.3)}

/* related */
.related-block{margin-top:40px;padding-top:30px;border-top:1px solid var(--line)}
.block-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}
.block-head h2{font-size:20px;font-weight:700;letter-spacing:-.2px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.rel-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:14px;overflow:hidden;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:var(--brand)}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background:#EFEBE4}
.rel-thumb img{width:100%;height:100%;object-fit:cover}
.rel-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:8px;flex:1}
.rel-body h3{font-size:15px;font-weight:700;line-height:1.5;color:var(--ink)}
.rel-card:hover .rel-body h3{color:var(--brand-deep)}
.rel-date{font-size:12.5px;color:var(--muted);margin-top:auto}

/* back row */
.back-row{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  margin-top:32px;padding-top:24px;border-top:1px solid var(--line);
}
.back-links{display:flex;align-items:center;gap:22px}

/* empty */
.empty-state{
  border:1px dashed var(--line);border-radius:16px;
  padding:56px 24px;text-align:center;background:#FCFAF7;
}
.empty-state i{font-size:34px;color:#C9C2B7;margin-bottom:14px;display:block}
.empty-state p{font-size:16px;color:var(--muted);margin-bottom:18px}

/* ============ sidebar ============ */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-1);
}
.side-card h3{
  font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--ink);
  margin-bottom:14px;display:flex;align-items:center;gap:8px;
}
.side-card h3 i{color:var(--brand);font-size:13px}
.toc-list{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line)}
.toc-list a{
  display:block;padding:8px 12px;font-size:13.5px;line-height:1.6;color:var(--muted);
  border-left:2px solid transparent;margin-left:-1px;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.toc-list a:hover{color:var(--brand-deep);border-left-color:var(--brand);background:rgba(255,77,45,.05)}
.side-entry{
  background:var(--ink-2);border-radius:var(--r-card);padding:22px;
  box-shadow:var(--sh-2);border:1px solid rgba(255,255,255,.06);
}
.side-entry .badge{background:rgba(0,209,193,.16);color:#6FF3E8}
.side-entry h3{color:#fff;font-size:17px;font-weight:700;margin:14px 0 8px;line-height:1.5}
.side-entry p{color:rgba(255,255,255,.7);font-size:13.5px;line-height:1.75;margin-bottom:16px}
.side-entry .btn{width:100%}
.side-links{display:flex;flex-direction:column;gap:2px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 2px;font-size:14px;color:#3A3B42;
  border-bottom:1px dashed rgba(231,226,218,.9);
  transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.side-links a:last-child{border-bottom:0}
.side-links a:hover{color:var(--brand-deep);padding-left:6px}
.side-links a i{font-size:11px;color:#C6C0B6;transition:color .18s var(--ease)}
.side-links a:hover i{color:var(--brand)}
.side-toc-details summary{
  display:none;cursor:pointer;font-size:14px;font-weight:700;color:var(--ink);
  padding:12px 0;list-style:none;
}
.side-toc-details summary::-webkit-details-marker{display:none}

/* ============ footer ============ */
.site-footer{
  background:var(--ink);color:#fff;
  border-top:1px solid rgba(255,255,255,.08);
  padding:62px 0 26px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
}
.footer-logo-main{font-size:20px;font-weight:800;letter-spacing:-.3px;color:#fff}
.footer-logo-main em{font-style:normal;color:var(--brand)}
.footer-logo-sub{font-size:11px;letter-spacing:.14em;color:rgba(255,255,255,.55);margin-top:5px}
.footer-desc{
  font-size:14px;color:rgba(255,255,255,.68);line-height:1.8;
  margin-top:16px;max-width:320px;
}
.footer-contact{
  font-size:13px;color:rgba(255,255,255,.52);line-height:1.9;margin-top:16px;
  padding-left:14px;border-left:2px solid rgba(255,77,45,.6);
}
.footer-col h4{
  font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.04em;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{
  font-size:14px;color:rgba(255,255,255,.68);
  display:inline-block;position:relative;padding-bottom:2px;
}
.footer-col a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--brand);border-radius:2px;transition:width .18s var(--ease);
}
.footer-col a:hover{color:#fff}
.footer-col a:hover::after{width:60%}
.footer-bottom{
  margin-top:46px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.48);
}

/* ============ responsive ============ */
@media (max-width:1024px){
  .container{padding:0 24px}
  .nav-links,.nav-right{display:none}
  .nav-toggle{display:inline-flex}
  .site-header.nav-open .nav-links{
    display:flex;position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--ink);border-bottom:1px solid rgba(255,255,255,.08);
    padding:12px 24px 20px;box-shadow:0 20px 40px rgba(0,0,0,.35);
  }
  .site-header.nav-open .nav-links > a{
    padding:14px 0;border-bottom:1px solid rgba(255,255,255,.07);font-size:16px;
  }
  .site-header.nav-open .nav-links > a::after{left:0;right:auto;width:0;transition:width .18s var(--ease)}
  .site-header.nav-open .nav-links > a.active::after{width:40px}
  .site-header.nav-open .nav-right{
    display:flex;position:absolute;left:0;right:0;top:calc(100% + 0px);
    margin-top:0;padding:0 24px 22px;background:var(--ink);
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .site-header.nav-open .mega{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .article-side{position:static}
  .article-main{padding:30px 28px}
  .article-body{max-width:none}
  .related-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .side-toc-details summary{display:block}
  .toc-card{display:none}
  .side-toc-details .side-card{padding:0;border:0;box-shadow:none;background:transparent}
  .side-toc-details[open] .toc-list{margin-top:6px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .nav-wrap{height:60px}
  .logo-main{font-size:18px}
  .logo-sub{font-size:10px}
  .article-main{padding:24px 20px}
  .article-title{font-size:24px}
  .article-body h2{font-size:21px;margin-top:32px}
  .article-body h3{font-size:18px}
  .related-grid{grid-template-columns:1fr 1fr}
  .related-grid > .rel-card:nth-child(3){display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-desc{max-width:none}
  .breadcrumb .current{max-width:38vw}
  .article-page{padding-bottom:64px}
  .site-footer{padding:46px 0 22px}
}
@media (max-width:520px){
  .article-main{padding:20px 16px}
  .article-title{font-size:22px;line-height:1.4}
  .article-body p,.article-body ul li,.article-body ol li{font-size:15px;line-height:1.85}
  .related-grid{grid-template-columns:1fr}
  .related-grid > .rel-card:nth-child(3){display:flex}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .back-row{flex-direction:column;align-items:flex-start}
  .back-links{flex-wrap:wrap;gap:14px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .breadcrumb .current{max-width:30vw}
}

/* roulang page: category1 */
:root{
  --brand:#FF4D2D;
  --brand-deep:#C8321A;
  --accent:#00D1C1;
  --ink:#15161C;
  --ink-2:#23252E;
  --bg:#FAF8F5;
  --surface:#FFFFFF;
  --line:#E7E2DA;
  --muted:#6B6A66;
  --warn:#FFC53D;
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(21,22,28,.06);
  --shadow-2:0 8px 24px rgba(21,22,28,.10);
  --shadow-3:0 14px 32px rgba(21,22,28,.14);
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .18s ease-out}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font-family:inherit;font-size:inherit}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  font-weight:700;font-size:15px;line-height:1.2;
  padding:14px 22px;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
  white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn-primary{
  background:linear-gradient(135deg,#FF6A3D 0%,#FF4D2D 55%,#F03C1C 100%);
  color:#fff;
  box-shadow:0 6px 16px rgba(255,77,45,.22);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,77,45,.35)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(255,77,45,.22)}
.btn-ghost{
  background:transparent;color:var(--ink);
  border:1.5px solid var(--line);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-deep);background:rgba(255,77,45,.06)}
.btn-light{background:#fff;color:var(--brand-deep);box-shadow:0 6px 18px rgba(21,22,28,.16)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(21,22,28,.22)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:9px}
.btn-block{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-deep);
  border-bottom:1px dashed rgba(200,50,26,.5);
  padding-bottom:2px;
  transition:border-color .18s ease-out,gap .18s ease-out,color .18s ease-out;
}
.text-link:hover{border-bottom-style:solid;gap:9px;color:var(--brand)}
.text-link i{font-size:12px}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:700;line-height:1.6;
  background:rgba(255,77,45,.10);color:var(--brand-deep);
}
.badge-cyan{background:rgba(0,209,193,.12);color:#087F76}
.badge-warn{background:rgba(255,197,61,.18);color:#8A6100}
.badge-dark{background:rgba(255,255,255,.10);color:#fff}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:var(--ink);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.logo{display:flex;flex-direction:column;gap:2px;line-height:1.15;flex-shrink:0}
.logo-main{font-size:18px;font-weight:800;color:#fff;letter-spacing:-.3px}
.logo-main em{color:var(--brand);font-style:normal}
.logo-sub{font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.6)}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-links a{
  position:relative;display:inline-block;
  font-size:15px;font-weight:600;color:rgba(255,255,255,.82);
  padding:9px 2px;
}
.nav-links a::after{
  content:"";position:absolute;left:20%;right:20%;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:center;
  transition:transform .18s ease-out;
}
.nav-links a:hover,.nav-links a.active{color:#fff}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px}
.mega{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:rgba(255,255,255,.82);
  padding:9px 12px;border-radius:8px;
  transition:color .18s ease-out,background-color .18s ease-out;
}
.mega-trigger:hover{color:#fff;background:rgba(255,255,255,.07)}
.mega-trigger i{font-size:11px;transition:transform .18s ease-out}
.mega.open .mega-trigger i{transform:rotate(180deg)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);
  width:790px;max-width:calc(100vw - 64px);
  background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:0 24px 48px rgba(21,22,28,.18);
  padding:24px;
  display:grid;grid-template-columns:1fr 1fr 1.15fr;gap:22px;
  opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity .16s ease-out,transform .16s ease-out,visibility .16s ease-out;
}
.mega.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col-title{font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--muted);margin-bottom:12px}
.mega-list{display:flex;flex-direction:column;gap:4px}
.mega-list a{
  display:flex;align-items:center;gap:9px;
  font-size:14px;font-weight:600;color:var(--ink);
  padding:8px 10px;border-radius:8px;
  transition:background-color .18s ease-out,color .18s ease-out;
}
.mega-list a:hover{background:rgba(255,77,45,.07);color:var(--brand-deep)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--brand);flex-shrink:0}
.dot.cyan{background:var(--accent)}
.mega-news{display:flex;flex-direction:column;gap:10px}
.mega-news a{
  display:block;padding:10px 10px;border-radius:9px;
  border-left:2px solid transparent;
  transition:background-color .18s ease-out,border-color .18s ease-out;
}
.mega-news a:hover{background:var(--bg);border-left-color:var(--brand)}
.mega-news .mt{display:block;font-size:13.5px;font-weight:600;color:var(--ink);line-height:1.5}
.mega-news .md{display:block;font-size:12px;color:var(--muted);margin-top:3px}
.mega-card{
  background:var(--ink);border-radius:14px;padding:20px;
  display:flex;flex-direction:column;justify-content:space-between;gap:16px;
}
.mega-card h4{font-size:16px;font-weight:700;color:#fff;margin-bottom:8px}
.mega-card p{font-size:13px;line-height:1.7;color:rgba(255,255,255,.68)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;
  color:#fff;font-size:18px;background:rgba(255,255,255,.08);
  transition:background-color .18s ease-out;
}
.nav-toggle:hover{background:rgba(255,255,255,.16)}

/* 移动抽屉 */
.mobile-mask{
  position:fixed;inset:0;z-index:130;background:rgba(21,22,28,.55);
  opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;
}
.mobile-mask.open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:140;
  width:min(86vw,360px);background:var(--ink);
  display:flex;flex-direction:column;
  padding:20px 20px 26px;overflow-y:auto;
  transform:translateX(100%);
  transition:transform .22s ease-out;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px}
.drawer-close{
  width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,.08);
  color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:16px;
}
.drawer-close:hover{background:rgba(255,255,255,.18)}
.drawer-group-title{font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.45);margin:18px 0 8px}
.drawer-links{display:flex;flex-direction:column;gap:2px}
.drawer-links a{
  display:block;padding:12px 12px;border-radius:10px;
  font-size:15px;font-weight:600;color:rgba(255,255,255,.82);
}
.drawer-links a:hover,.drawer-links a.active{background:rgba(255,255,255,.08);color:#fff}
.drawer-foot{margin-top:auto;padding-top:22px}

/* ============ 面包屑 & Hero ============ */
.page-hero{
  background:linear-gradient(180deg,#FFF4EE 0%,#FAF8F5 100%);
  border-bottom:1px solid var(--line);
  padding:30px 0 42px;
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);margin-bottom:22px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb .sep{color:#C9C3BA;font-size:12px}
.breadcrumb .current{color:var(--muted);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hero-row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;flex-wrap:wrap}
.page-title{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.15;font-weight:800;letter-spacing:-.5px;color:var(--ink);
}
.hero-sub{margin-top:14px;font-size:16px;color:var(--muted);max-width:620px;line-height:1.8}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-meta{display:flex;flex-wrap:wrap;gap:0 14px;margin-top:22px;font-size:13px;color:var(--muted)}
.hero-meta span{display:inline-flex;align-items:center;gap:6px}
.hero-meta span + span::before{content:"·";margin-right:12px;color:#C9C3BA}
.hero-meta i{color:var(--accent);font-size:12px}

/* ============ 锚点子导航 ============ */
.anchor-nav{
  position:sticky;top:72px;z-index:60;
  background:rgba(250,248,245,.95);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.anchor-inner{
  display:flex;gap:28px;overflow-x:auto;white-space:nowrap;
  scrollbar-width:none;
}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-inner a{
  position:relative;padding:15px 0;
  font-size:14px;font-weight:600;color:var(--muted);
  transition:color .18s ease-out;
}
.anchor-inner a:hover,.anchor-inner a.active{color:var(--brand-deep)}
.anchor-inner a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;
  background:var(--brand);border-radius:3px;
}

/* ============ 板块 ============ */
.section{padding:76px 0;scroll-margin-top:130px}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:38px}
.section-head .badge{margin-bottom:14px}
.section-title{
  font-size:clamp(24px,2.8vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.3px;
}
.section-sub{margin-top:12px;font-size:15.5px;color:var(--muted);line-height:1.8}

/* 步骤主区 */
.steps-layout{display:grid;grid-template-columns:1.5fr .85fr;gap:40px;align-items:start}
.step-list{display:flex;flex-direction:column}
.step{
  display:grid;grid-template-columns:76px 1fr;gap:20px;
  padding:24px 0;
  border-bottom:1px dashed var(--line);
}
.step:first-child{padding-top:4px}
.step:last-child{border-bottom:0;padding-bottom:0}
.step-num{
  font-size:40px;font-weight:800;line-height:1;letter-spacing:-2px;
  color:transparent;-webkit-text-stroke:1.6px #DED5C9;
  font-variant-numeric:tabular-nums;
}
.step-title{font-size:19px;font-weight:700;margin-bottom:6px;color:var(--ink)}
.step-desc{font-size:15px;color:var(--muted);line-height:1.8}
.step-desc strong{color:var(--ink);font-weight:700}
.step-tip{
  display:inline-flex;align-items:center;gap:7px;margin-top:10px;
  font-size:13px;color:#087F76;background:rgba(0,209,193,.12);
  padding:5px 12px;border-radius:999px;font-weight:600;
}

/* 深色入口卡 */
.entry-card{
  position:sticky;top:150px;
  background:var(--ink);color:#fff;
  border-radius:20px;padding:28px;
  box-shadow:0 18px 40px rgba(21,22,28,.22);
}
.entry-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.entry-card h3{font-size:18px;font-weight:700;color:#fff;letter-spacing:-.2px}
.entry-rows{display:flex;flex-direction:column;gap:0;margin-bottom:22px}
.entry-row{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.14);
  font-size:13.5px;
}
.entry-row:last-child{border-bottom:0}
.entry-row .k{color:rgba(255,255,255,.6)}
.entry-row .v{color:#fff;font-weight:700;font-variant-numeric:tabular-nums;display:inline-flex;align-items:center;gap:7px}
.entry-row .v i{font-size:11px;color:var(--accent)}
.entry-note{font-size:12.5px;color:rgba(255,255,255,.55);margin-top:14px;line-height:1.7}

/* 图文区块 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.split-figure{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-2)}
.split-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}
.split-figure .fig-tag{
  position:absolute;left:16px;top:16px;
  background:rgba(21,22,28,.82);color:#fff;
  font-size:12px;font-weight:600;padding:5px 12px;border-radius:999px;
  backdrop-filter:blur(6px);
}
.point-list{display:flex;flex-direction:column;gap:16px;margin-top:24px}
.point-item{display:grid;grid-template-columns:38px 1fr;gap:14px}
.point-icon{
  width:38px;height:38px;border-radius:11px;
  background:rgba(255,77,45,.10);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:15px;
}
.point-item h4{font-size:15.5px;font-weight:700;margin-bottom:3px}
.point-item p{font-size:14px;color:var(--muted);line-height:1.75}

/* 提示条 */
.notice-bar{
  display:flex;gap:14px;align-items:flex-start;
  background:#FFF6E9;border-left:3px solid var(--brand);
  border-radius:12px;padding:18px 20px;margin-top:36px;
}
.notice-bar i{color:var(--brand);font-size:16px;margin-top:4px}
.notice-bar p{font-size:14.5px;color:#6B5330;line-height:1.8}
.notice-bar strong{color:var(--ink)}

/* 2x2 卡片 */
.card-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.info-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.info-card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-3)}
.info-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.info-icon{
  width:44px;height:44px;border-radius:12px;
  background:rgba(255,77,45,.10);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:17px;
}
.info-icon.cyan{background:rgba(0,209,193,.12);color:#087F76}
.info-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.info-card p{font-size:14.5px;color:var(--muted);line-height:1.8;margin-bottom:14px}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:0 22px;box-shadow:var(--shadow-1);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.faq-item:hover{border-color:#D9D1C6}
.faq-item[open]{border-color:var(--brand);box-shadow:var(--shadow-2)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 0;font-size:16px;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-deep)}
.faq-item summary i{
  flex-shrink:0;font-size:13px;color:var(--muted);
  transition:transform .18s ease-out,color .18s ease-out;
}
.faq-item[open] summary{color:var(--brand-deep)}
.faq-item[open] summary i{transform:rotate(180deg);color:var(--brand)}
.faq-answer{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--muted);border-top:1px dashed var(--line);margin-top:-2px;padding-top:14px}

/* CTA */
.cta-band{
  background:linear-gradient(135deg,#FF6A3D 0%,#FF4D2D 50%,#C8321A 100%);
  border-radius:20px;padding:40px;
  display:flex;align-items:center;justify-content:space-between;gap:30px;
  color:#fff;box-shadow:0 18px 40px rgba(255,77,45,.26);
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;line-height:1.3;letter-spacing:-.3px}
.cta-band p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.88);line-height:1.75}

/* 页脚 */
.site-footer{
  background:var(--ink);color:rgba(255,255,255,.72);
  border-top:1px solid rgba(255,255,255,.08);
  padding:62px 0 0;margin-top:84px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr .8fr .8fr .9fr;gap:36px}
.footer-logo-main{font-size:19px;font-weight:800;color:#fff;letter-spacing:-.3px}
.footer-logo-main em{color:var(--brand);font-style:normal}
.footer-logo-sub{font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.5);margin-top:4px}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:300px}
.footer-contact{margin-top:16px;font-size:13px;line-height:1.9;color:rgba(255,255,255,.5)}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{
  position:relative;font-size:14px;color:rgba(255,255,255,.68);
  display:inline-block;padding-bottom:1px;
}
.footer-col a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--brand);transition:width .18s ease-out;
}
.footer-col a:hover{color:#fff}
.footer-col a:hover::after{width:22px}
.footer-bottom{
  margin-top:48px;padding:20px 0;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .mega-panel{width:720px;grid-template-columns:1fr 1fr 1.1fr;padding:20px;gap:18px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-links,.mega{display:none}
  .nav-toggle{display:inline-flex}
  .nav-wrap{height:60px}
  .site-header .nav-right .btn{display:none}
  .anchor-nav{top:60px}
  .section{padding:62px 0;scroll-margin-top:118px}
  .steps-layout{grid-template-columns:1fr;gap:32px}
  .entry-card{position:static}
  .split{grid-template-columns:1fr;gap:28px}
  .split-figure{order:-1}
  .card-grid-2{grid-template-columns:1fr 1fr;gap:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
  .cta-band .btn{width:100%}
}
@media (max-width:767px){
  .page-hero{padding:24px 0 34px}
  .hero-row{gap:22px}
  .hero-actions{width:100%}
  .hero-actions .btn{width:100%}
  .section{padding:52px 0}
  .card-grid-2{grid-template-columns:1fr}
  .step{grid-template-columns:58px 1fr;gap:14px;padding:20px 0}
  .step-num{font-size:32px}
  .step-title{font-size:17px}
  .faq-item{padding:0 18px}
  .faq-item summary{font-size:15px;padding:16px 0}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .site-footer{margin-top:60px;padding-top:48px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .anchor-inner{gap:22px}
  .anchor-inner a{font-size:13.5px;padding:13px 0}
  .entry-card{padding:22px}
  .notice-bar{padding:16px}
  .cta-band{padding:26px;border-radius:16px}
  .info-card{padding:20px}
}

/* roulang page: category2 */
:root{
  --brand:#FF4D2D;
  --brand-deep:#C8321A;
  --accent:#00D1C1;
  --ink:#15161C;
  --ink-2:#23252E;
  --bg:#FAF8F5;
  --surface:#FFFFFF;
  --line:#E7E2DA;
  --muted:#6B6A66;
  --warn:#FFC53D;
  --r-card:18px;
  --r-img:14px;
  --r-btn:10px;
  --shadow-1:0 1px 2px rgba(21,22,28,.06);
  --shadow-2:0 8px 24px rgba(21,22,28,.10);
  --shadow-3:0 14px 32px rgba(21,22,28,.14);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,transform .18s ease-out;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.3px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;line-height:1.2;
  border:1.5px solid transparent;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:linear-gradient(135deg,#FF6A34 0%,var(--brand) 45%,var(--brand-deep) 100%);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,77,45,.35);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(255,77,45,.28);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:rgba(255,77,45,.06);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-white{background:#fff;color:var(--brand-deep);border-color:#fff;}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.18);}
.on-dark .btn-ghost,.btn-ghost.on-dark{border-color:rgba(255,255,255,.24);color:#fff;}
.btn-ghost.on-dark:hover{background:#fff;color:var(--brand);border-color:#fff;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:var(--ink);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-wrap{display:flex;align-items:center;gap:24px;height:72px;}
.logo{display:flex;flex-direction:column;gap:2px;line-height:1.15;flex-shrink:0;}
.logo-main{font-size:20px;font-weight:800;color:#fff;letter-spacing:.2px;}
.logo-main em{font-style:normal;color:var(--brand);}
.logo-sub{font-size:11.5px;color:rgba(255,255,255,.6);letter-spacing:.6px;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-links a{
  position:relative;font-size:15px;font-weight:600;color:rgba(255,255,255,.82);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:-2px;width:0;height:2px;background:var(--brand);
  transform:translateX(-50%);transition:width .2s ease-out;
}
.nav-links a:hover{color:#fff;}
.nav-links a:hover::after,.nav-links a.active::after{width:60%;}
.nav-links a.active{color:#fff;}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px;}
.mega{position:relative;}
.mega-trigger{
  display:inline-flex;align-items:center;gap:6px;
  background:transparent;border:0;color:rgba(255,255,255,.8);
  font-size:15px;font-weight:600;padding:8px 4px;
}
.mega-trigger i{font-size:11px;transition:transform .18s ease-out;}
.mega-trigger:hover{color:#fff;}
.mega:hover .mega-trigger i,.mega.open .mega-trigger i{transform:rotate(180deg);}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:760px;
  background:#fff;border-radius:16px;box-shadow:0 24px 48px rgba(21,22,28,.18);
  padding:24px;display:grid;grid-template-columns:1fr 1fr 1.15fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .16s ease-out,transform .16s ease-out,visibility .16s;
  z-index:95;
}
.mega:hover .mega-panel,.mega:focus-within .mega-panel,.mega.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-col-title{font-size:12px;font-weight:700;letter-spacing:1px;color:var(--muted);margin-bottom:12px;}
.mega-list a{display:flex;align-items:center;gap:9px;font-size:14.5px;color:var(--ink);padding:8px 0;font-weight:600;}
.mega-list a:hover{color:var(--brand-deep);}
.dot{width:7px;height:7px;border-radius:50%;background:var(--brand);flex-shrink:0;}
.dot.cyan{background:var(--accent);}
.mega-news a{display:block;padding:9px 0;border-bottom:1px dashed var(--line);}
.mega-news a:last-child{border-bottom:0;}
.mega-news .mt{display:block;font-size:14px;font-weight:600;color:var(--ink);line-height:1.5;}
.mega-news .md{display:block;font-size:12.5px;color:var(--muted);margin-top:3px;}
.mega-news a:hover .mt{color:var(--brand-deep);}
.mega-card{background:var(--ink);border-radius:14px;padding:20px;display:flex;flex-direction:column;justify-content:space-between;gap:16px;}
.mega-card h4{color:#fff;font-size:17px;}
.mega-card p{color:rgba(255,255,255,.72);font-size:13.5px;line-height:1.7;margin-top:8px;}
.mega-card .btn{align-self:flex-start;}
.nav-toggle{
  display:none;background:transparent;border:1px solid rgba(255,255,255,.2);
  color:#fff;width:42px;height:38px;border-radius:10px;font-size:16px;
}
.drawer{
  display:none;position:fixed;inset:60px 0 0;background:var(--ink);z-index:88;
  padding:24px 20px 100px;overflow-y:auto;
}
.drawer.show{display:block;}
.drawer a.d-link{display:block;padding:14px 4px;color:rgba(255,255,255,.86);font-size:16px;font-weight:600;border-bottom:1px solid rgba(255,255,255,.08);}
.drawer a.d-link.active{color:var(--brand);}
.drawer .d-cta{position:fixed;left:0;right:0;bottom:0;padding:16px 20px;background:var(--ink);border-top:1px solid rgba(255,255,255,.08);}
.drawer .d-cta .btn{width:100%;}

/* ---------- 面包屑 ---------- */
.crumbs{padding:18px 0 0;font-size:13px;color:var(--muted);}
.crumbs .sep{margin:0 7px;color:#BDB7AD;}
.crumbs a:hover{color:var(--brand-deep);}
.crumbs .now{color:var(--muted);}

/* ---------- 分类 Hero ---------- */
.cat-hero{padding:26px 0 34px;}
.cat-hero-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:var(--surface);border:1px solid var(--line);border-radius:24px;
  padding:36px 40px;box-shadow:var(--shadow-1);
  position:relative;overflow:hidden;
}
.cat-hero-inner::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:6px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
}
.cat-hero h1{font-size:clamp(28px,3.6vw,42px);font-weight:800;letter-spacing:-.5px;}
.cat-hero h1 span{color:var(--brand-deep);}
.cat-hero .sub{margin-top:14px;font-size:16px;color:var(--muted);max-width:640px;}
.cat-hero .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.cat-hero .actions{flex-shrink:0;display:flex;flex-direction:column;gap:12px;align-items:stretch;}

/* ---------- 锚点导航 ---------- */
.anchor-bar{
  position:sticky;top:72px;z-index:70;
  background:rgba(250,248,245,.96);backdrop-filter:blur(6px);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.anchor-scroll{display:flex;gap:30px;overflow-x:auto;white-space:nowrap;padding:0;scrollbar-width:none;}
.anchor-scroll::-webkit-scrollbar{display:none;}
.anchor-scroll a{
  position:relative;display:inline-block;padding:16px 0;font-size:15px;font-weight:600;color:var(--muted);
}
.anchor-scroll a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--brand);
  border-radius:3px 3px 0 0;transform:scaleX(0);transform-origin:center;transition:transform .18s ease-out;
}
.anchor-scroll a:hover{color:var(--ink);}
.anchor-scroll a.active{color:var(--brand-deep);}
.anchor-scroll a.active::after{transform:scaleX(1);}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:34px;}
.section-head h2{font-size:clamp(24px,2.8vw,34px);font-weight:700;}
.section-head p{margin-top:12px;color:var(--muted);font-size:15.5px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:1.4px;color:var(--brand-deep);
  background:rgba(255,77,45,.10);padding:5px 13px;border-radius:999px;margin-bottom:14px;
}
.eyebrow.cyan{color:#087F76;background:rgba(0,209,193,.12);}

/* ---------- 平台卡 ---------- */
.platform-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.p-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;display:flex;flex-direction:column;gap:14px;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.p-card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-3);}
.p-icon{
  width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,77,45,.10);color:var(--brand);font-size:20px;
}
.p-card h3{font-size:19px;font-weight:700;}
.p-meta{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;}
.p-meta b{color:var(--ink);font-weight:700;}
.p-desc{font-size:14.5px;color:var(--muted);line-height:1.8;min-height:78px;}
.p-actions{display:flex;gap:10px;margin-top:auto;flex-wrap:wrap;}
.p-actions .btn{flex:1;min-width:112px;padding:10px 12px;font-size:13.5px;}

/* ---------- 提示条 ---------- */
.notice-bar{
  margin-top:26px;background:#FFF6E9;border:1px solid #F6E3C4;border-left:4px solid var(--brand);
  border-radius:14px;padding:20px 24px;display:flex;gap:16px;align-items:flex-start;
}
.notice-bar i{color:var(--brand);font-size:18px;margin-top:3px;}
.notice-bar h4{font-size:15.5px;font-weight:700;margin-bottom:6px;}
.notice-bar p{font-size:14.5px;color:#7A6A52;line-height:1.8;}

/* ---------- 图文区块 ---------- */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:center;}
.split-img{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-2);}
.split-img img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11;border-radius:20px;}
.split-img .tag-float{
  position:absolute;left:18px;bottom:18px;background:rgba(21,22,28,.86);color:#fff;
  font-size:13px;font-weight:600;padding:8px 14px;border-radius:999px;backdrop-filter:blur(4px);
}
.split h2{font-size:clamp(24px,2.8vw,32px);font-weight:700;margin-bottom:14px;}
.split p{color:var(--muted);font-size:15.5px;}
.check-list{margin-top:22px;display:grid;gap:12px;}
.check-list li{display:flex;gap:11px;align-items:flex-start;font-size:14.8px;color:var(--ink);}
.check-list i{color:var(--accent);font-size:15px;margin-top:5px;}

/* ---------- 安装步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative;}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 22px;position:relative;transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.step:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-2);}
.step .num{
  font-size:34px;font-weight:800;color:transparent;-webkit-text-stroke:1.4px rgba(255,77,45,.45);
  font-variant-numeric:tabular-nums;line-height:1;margin-bottom:14px;letter-spacing:-1px;
}
.step h3{font-size:16.5px;font-weight:700;margin-bottom:8px;}
.step p{font-size:14px;color:var(--muted);line-height:1.8;}

/* ---------- 版本对照 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:16px;background:var(--surface);}
table{width:100%;border-collapse:collapse;min-width:640px;}
th,td{padding:14px 18px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line);}
th{background:rgba(0,0,0,.03);font-weight:700;font-size:13.5px;color:var(--ink);letter-spacing:.4px;}
tbody tr:nth-child(even){background:#FCFBF9;}
tbody tr:last-child td{border-bottom:0;}
td.num{font-variant-numeric:tabular-nums;}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
details.faq{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  padding:18px 22px;transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
details.faq[open]{border-color:rgba(255,77,45,.4);box-shadow:var(--shadow-1);}
details.faq summary{
  list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:16px;
  font-size:15.5px;font-weight:700;color:var(--ink);
}
details.faq summary::-webkit-details-marker{display:none;}
details.faq summary::after{content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;color:var(--muted);transition:transform .18s ease-out,color .18s ease-out;margin-top:5px;}
details.faq[open] summary::after{transform:rotate(180deg);color:var(--brand);}
details.faq[open] summary{color:var(--brand-deep);}
details.faq .ans{padding-top:12px;font-size:15px;color:var(--muted);line-height:1.85;}

/* ---------- 底部 CTA ---------- */
.cta-band{
  background:linear-gradient(135deg,#FF6A34 0%,var(--brand) 40%,var(--brand-deep) 100%);
  border-radius:20px;padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:0 18px 40px rgba(255,77,45,.28);
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);color:#fff;font-weight:800;}
.cta-band p{color:rgba(255,255,255,.9);font-size:15px;margin-top:10px;}
.cta-band .actions{display:flex;gap:12px;flex-shrink:0;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#fff;margin-top:20px;border-top:1px solid rgba(255,255,255,.08);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding:64px 0 40px;}
.footer-logo-main{font-size:20px;font-weight:800;letter-spacing:.2px;}
.footer-logo-main em{font-style:normal;color:var(--brand);}
.footer-logo-sub{font-size:11.5px;letter-spacing:.6px;color:rgba(255,255,255,.6);margin-top:3px;}
.footer-desc{margin-top:16px;font-size:14px;color:rgba(255,255,255,.72);line-height:1.8;max-width:300px;}
.footer-contact{margin-top:16px;font-size:13.5px;color:rgba(255,255,255,.55);line-height:1.9;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.6px;}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);position:relative;display:inline-block;}
.footer-col a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--brand);transition:width .2s ease-out;}
.footer-col a:hover{color:#fff;}
.footer-col a:hover::after{width:100%;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:20px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-right .btn{display:none;}
  .nav-wrap{height:60px;}
  .mega{display:none;}
  .anchor-bar{top:60px;}
  .cat-hero-inner{flex-direction:column;align-items:flex-start;padding:28px 26px;}
  .cat-hero .actions{flex-direction:row;flex-wrap:wrap;}
  .platform-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;gap:28px;}
  .faq-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px;}
}
@media (max-width:768px){
  .section{padding:52px 0;}
  .p-desc{min-height:0;}
  .cta-band .actions{width:100%;}
  .cta-band .actions .btn{flex:1;}
}
@media (max-width:520px){
  .container{padding:0 20px;}
  body{font-size:15px;}
  .cat-hero h1{font-size:26px;}
  .platform-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .p-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .anchor-scroll{gap:22px;}
  .anchor-scroll a{font-size:14px;padding:14px 0;}
  .notice-bar{padding:16px 18px;}
}

.badge-orange{display:inline-flex;align-items:center;padding:5px 13px;border-radius:999px;background:rgba(255,77,45,.10);color:#C8321A;font-size:13px;font-weight:700;}
.badge-cyan{display:inline-flex;align-items:center;padding:5px 13px;border-radius:999px;background:rgba(0,209,193,.12);color:#087F76;font-size:13px;font-weight:700;}

/* roulang page: category3 */
:root{
    --brand:#FF4D2D;
    --brand-deep:#C8321A;
    --accent:#00D1C1;
    --ink:#15161C;
    --ink-2:#23252E;
    --bg:#FAF8F5;
    --surface:#FFFFFF;
    --line:#E7E2DA;
    --muted:#6B6A66;
    --warn:#FFC53D;
    --r-card:18px;
    --r-img:14px;
    --r-btn:10px;
    --shadow-1:0 1px 2px rgba(21,22,28,.06);
    --shadow-2:0 8px 24px rgba(21,22,28,.10);
    --shadow-3:0 14px 32px rgba(21,22,28,.14);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    background-color:var(--bg);
    color:var(--ink);
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 22px;border-radius:var(--r-btn);border:1.5px solid transparent;
    font-size:15px;font-weight:700;line-height:1.2;cursor:pointer;white-space:nowrap;
    transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
  }
  .btn-primary{
    background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
    color:#fff;box-shadow:0 4px 12px rgba(255,77,45,.24);
  }
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,77,45,.35);}
  .btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(255,77,45,.22);}
  .btn-ghost{
    background:transparent;border:1.5px solid var(--line);color:var(--ink);
  }
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:rgba(255,77,45,.06);transform:translateY(-2px);}
  .btn-white{background:#fff;color:var(--ink);box-shadow:0 6px 18px rgba(0,0,0,.14);}
  .btn-white:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(0,0,0,.18);color:var(--brand-deep);}
  .btn-sm{padding:9px 16px;font-size:14px;border-radius:9px;}
  .btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

  .badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.6px;line-height:1.6;}
  .badge-brand{background:rgba(255,77,45,.10);color:#C8321A;}
  .badge-cyan{background:rgba(0,209,193,.12);color:#087F76;}

  /* ============ 导航 ============ */
  .site-header{position:sticky;top:0;z-index:100;background:var(--ink);border-bottom:1px solid rgba(255,255,255,.08);}
  .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
  .logo{display:flex;flex-direction:column;line-height:1.15;flex-shrink:0;}
  .logo-main{font-size:21px;font-weight:800;color:#fff;letter-spacing:-.4px;}
  .logo-main em{font-style:normal;color:var(--brand);}
  .logo-sub{font-size:11px;letter-spacing:2px;color:rgba(255,255,255,.6);margin-top:3px;}
  .nav-links{display:flex;align-items:center;gap:4px;}
  .nav-links a{position:relative;display:inline-block;padding:10px 12px;font-size:15px;font-weight:600;color:rgba(255,255,255,.82);white-space:nowrap;transition:color .18s ease-out;}
  .nav-links a::after{
    content:"";position:absolute;left:20%;right:20%;bottom:3px;height:2px;border-radius:2px;
    background:var(--brand);transform:scaleX(0);transform-origin:center;transition:transform .18s ease-out;
  }
  .nav-links a:hover{color:#fff;}
  .nav-links a:hover::after{transform:scaleX(1);}
  .nav-links a.active{color:#fff;}
  .nav-links a.active::after{transform:scaleX(1);}
  .nav-right{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .nav-toggle{
    display:none;width:42px;height:42px;border-radius:10px;border:1px solid rgba(255,255,255,.2);
    background:transparent;color:#fff;font-size:16px;cursor:pointer;align-items:center;justify-content:center;
    transition:background-color .18s ease-out,border-color .18s ease-out;
  }
  .nav-toggle:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.34);}

  .mega{position:relative;}
  .mega-trigger{
    display:inline-flex;align-items:center;gap:6px;padding:9px 12px;border:0;border-radius:9px;
    background:transparent;color:rgba(255,255,255,.82);font-size:15px;font-weight:600;cursor:pointer;
    transition:color .18s ease-out,background-color .18s ease-out;
  }
  .mega-trigger:hover{color:#fff;background:rgba(255,255,255,.07);}
  .mega-trigger i{font-size:11px;transition:transform .18s ease-out;}
  .mega-panel{
    position:absolute;right:0;top:calc(100% + 14px);width:760px;padding:24px;
    background:#fff;border-radius:16px;box-shadow:0 24px 48px rgba(21,22,28,.18);
    display:grid;grid-template-columns:1fr 1.15fr 1.2fr;gap:24px;
    opacity:0;visibility:hidden;transform:translateY(6px);
    transition:opacity .18s ease-out,transform .18s ease-out,visibility .18s;
    z-index:120;
  }
  .mega:hover .mega-panel,.mega.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
  .mega.open .mega-trigger i{transform:rotate(180deg);}
  .mega-col-title{font-size:12px;font-weight:800;letter-spacing:1.4px;color:var(--muted);margin-bottom:12px;}
  .mega-list a{display:flex;align-items:flex-start;gap:9px;padding:8px;border-radius:8px;font-size:14px;font-weight:600;color:var(--ink);line-height:1.6;transition:background-color .16s ease-out,color .16s ease-out;}
  .mega-list a:hover{background:var(--bg);color:var(--brand-deep);}
  .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:9px;flex-shrink:0;}
  .dot.cyan{background:var(--accent);}
  .mega-news a{display:block;padding:9px 8px;border-radius:8px;transition:background-color .16s ease-out;}
  .mega-news a:hover{background:var(--bg);}
  .mega-news .mt{display:block;font-size:14px;font-weight:600;color:var(--ink);line-height:1.55;}
  .mega-news .md{display:block;font-size:12px;color:var(--muted);margin-top:4px;}
  .mega-card{
    background:var(--ink);border-radius:14px;padding:20px;display:flex;flex-direction:column;justify-content:space-between;gap:18px;
  }
  .mega-card h4{font-size:16px;font-weight:700;color:#fff;}
  .mega-card p{font-size:13px;line-height:1.75;color:rgba(255,255,255,.72);margin-top:8px;}

  /* ============ 面包屑 & Hero ============ */
  .cat-hero{background:linear-gradient(180deg,#FFF6F2 0%,#FAF8F5 100%);border-bottom:1px solid var(--line);padding:20px 0 46px;}
  .breadcrumb{font-size:13px;color:var(--muted);}
  .breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px;}
  .breadcrumb li{display:flex;align-items:center;gap:6px;}
  .breadcrumb li:not(:last-child)::after{content:"›";color:#BFB9B0;}
  .breadcrumb a{color:var(--muted);transition:color .16s ease-out;}
  .breadcrumb a:hover{color:var(--brand-deep);}
  .breadcrumb li[aria-current] span{color:#8A857D;}
  .cat-hero-inner{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-top:20px;}
  .cat-hero h1{font-size:clamp(28px,3.6vw,42px);font-weight:800;line-height:1.2;letter-spacing:-.6px;margin-top:14px;}
  .cat-hero-sub{margin-top:12px;font-size:16px;color:var(--muted);max-width:600px;}

  /* ============ 锚点导航 ============ */
  .anchor-nav{position:sticky;top:72px;z-index:60;background:rgba(255,255,255,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(8px);}
  .anchor-inner{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;}
  .anchor-inner::-webkit-scrollbar{display:none;}
  .anchor-inner a{position:relative;display:inline-block;padding:14px 10px;font-size:14px;font-weight:600;color:var(--muted);white-space:nowrap;transition:color .16s ease-out;}
  .anchor-inner a::after{
    content:"";position:absolute;left:10px;right:10px;bottom:6px;height:2px;border-radius:2px;
    background:var(--brand);transform:scaleX(0);transition:transform .18s ease-out;
  }
  .anchor-inner a:hover{color:var(--ink);}
  .anchor-inner a:hover::after{transform:scaleX(1);}
  .anchor-inner a.is-active{color:var(--brand-deep);}
  .anchor-inner a.is-active::after{transform:scaleX(1);}

  /* ============ 板块通用 ============ */
  .section{padding:68px 0;}
  .section-head{max-width:720px;margin-bottom:34px;}
  .section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;letter-spacing:-.3px;}
  .section-head p{margin-top:10px;font-size:15px;color:var(--muted);}
  .eyebrow{display:inline-block;font-size:12px;font-weight:800;letter-spacing:2px;color:var(--brand-deep);margin-bottom:10px;}

  /* ============ FAQ 主体 ============ */
  .faq-layout{display:grid;grid-template-columns:1fr 340px;gap:36px;align-items:start;}
  .faq-main h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;letter-spacing:-.3px;}
  .faq-main .lead{margin-top:10px;font-size:15px;color:var(--muted);max-width:640px;}
  .faq-list{margin-top:26px;}
  .faq-item{
    background:var(--surface);border:1px solid var(--line);border-radius:14px;
    padding:0 20px;margin-bottom:12px;
    transition:border-color .18s ease-out,box-shadow .18s ease-out;
  }
  .faq-item:hover{border-color:#D9D2C7;}
  .faq-item[open]{border-color:rgba(255,77,45,.45);box-shadow:var(--shadow-2);}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 0;font-size:16px;font-weight:700;color:var(--ink);line-height:1.6;
    transition:color .18s ease-out;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;
    color:#B4AEA4;flex-shrink:0;transition:transform .2s ease-out,color .2s ease-out;
  }
  .faq-item[open] summary{color:var(--brand-deep);}
  .faq-item[open] summary::after{transform:rotate(180deg);color:var(--brand);}
  .faq-answer{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--muted);}

  .notice{
    display:flex;gap:14px;background:#FFFBF0;border-left:3px solid var(--brand);
    border-radius:12px;padding:16px 18px;font-size:14px;line-height:1.8;color:var(--ink-2);margin-top:24px;
  }
  .notice i{color:var(--brand);margin-top:5px;font-size:14px;flex-shrink:0;}

  /* ============ 侧栏卡 ============ */
  .faq-side{position:sticky;top:150px;display:flex;flex-direction:column;gap:16px;}
  .side-card{
    background:linear-gradient(150deg,#FFF1EC 0%,#FFF8F4 100%);
    border:1px solid rgba(255,77,45,.20);border-radius:18px;padding:26px;box-shadow:var(--shadow-1);
  }
  .side-card h3{font-size:19px;font-weight:700;line-height:1.4;}
  .side-card .side-lead{font-size:14px;color:var(--muted);margin-top:8px;line-height:1.75;}
  .side-list{margin-top:18px;display:flex;flex-direction:column;gap:14px;}
  .side-list li{display:flex;gap:10px;font-size:14px;line-height:1.75;color:var(--ink-2);}
  .side-list i{color:var(--brand);font-size:13px;margin-top:6px;flex-shrink:0;}
  .side-card .btn{width:100%;margin-top:20px;}
  .side-note{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:var(--shadow-1);}
  .side-note h4{font-size:15px;font-weight:700;margin-bottom:12px;}
  .side-note li{position:relative;padding-left:16px;font-size:13.5px;line-height:1.8;color:var(--muted);margin-bottom:8px;}
  .side-note li:last-child{margin-bottom:0;}
  .side-note li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--accent);}

  /* ============ 自查板块 ============ */
  .check-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:52px;align-items:center;}
  .check-media{margin:0;position:relative;}
  .check-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line);box-shadow:var(--shadow-2);}
  .check-media figcaption{
    position:absolute;left:16px;bottom:16px;background:rgba(21,22,28,.82);color:#fff;
    font-size:12.5px;padding:7px 14px;border-radius:999px;backdrop-filter:blur(4px);
  }
  .check-body h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;letter-spacing:-.3px;}
  .check-body > p{margin-top:10px;font-size:15px;color:var(--muted);}
  .check-list{margin-top:26px;}
  .check-list li{display:flex;gap:16px;padding:16px 0;border-bottom:1px dashed var(--line);}
  .check-list li:last-child{border-bottom:0;}
  .check-list .num{
    font-size:17px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;
    flex-shrink:0;width:32px;line-height:1.5;letter-spacing:.5px;
  }
  .check-list h4{font-size:16px;font-weight:700;line-height:1.5;}
  .check-list p{font-size:14px;color:var(--muted);margin-top:4px;line-height:1.75;}
  .check-body .btn{margin-top:26px;}

  /* ============ 相关入口 ============ */
  .entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:34px;}
  .entry-card{
    display:flex;flex-direction:column;gap:12px;padding:24px;background:var(--surface);
    border:1px solid var(--line);border-radius:var(--r-card);
    transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
  }
  .entry-card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-3);}
  .entry-icon{
    width:44px;height:44px;border-radius:12px;background:rgba(255,77,45,.10);color:var(--brand);
    display:flex;align-items:center;justify-content:center;font-size:18px;
  }
  .entry-icon.cyan{background:rgba(0,209,193,.12);color:#087F76;}
  .entry-card h3{font-size:17px;font-weight:700;line-height:1.45;}
  .entry-card p{font-size:14px;color:var(--muted);line-height:1.75;}
  .entry-link{margin-top:auto;display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:700;color:var(--brand-deep);transition:gap .18s ease-out;}
  .entry-card:hover .entry-link{gap:11px;}

  /* ============ 底部 CTA ============ */
  .cta-band-wrap{padding:0 0 72px;}
  .cta-band{
    background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
    border-radius:20px;padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
    box-shadow:0 20px 42px rgba(255,77,45,.22);
  }
  .cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;color:#fff;line-height:1.3;letter-spacing:-.3px;}
  .cta-band p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.88);max-width:560px;}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--ink);border-top:1px solid rgba(255,255,255,.08);padding:56px 0 0;color:rgba(255,255,255,.72);}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:42px;}
  .footer-logo-main{font-size:20px;font-weight:800;color:#fff;letter-spacing:-.3px;}
  .footer-logo-main em{font-style:normal;color:var(--brand);}
  .footer-logo-sub{font-size:11px;letter-spacing:2px;color:rgba(255,255,255,.55);margin-top:5px;}
  .footer-desc{font-size:14px;line-height:1.8;margin-top:16px;color:rgba(255,255,255,.68);max-width:300px;}
  .footer-contact{margin-top:14px;font-size:13px;line-height:1.9;color:rgba(255,255,255,.52);}
  .footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
  .footer-col li{margin-bottom:10px;}
  .footer-col a{position:relative;display:inline-block;font-size:14px;color:rgba(255,255,255,.68);transition:color .16s ease-out;}
  .footer-col a::after{
    content:"";position:absolute;left:0;bottom:-2px;height:1px;width:100%;background:var(--brand);
    transform:scaleX(0);transform-origin:left;transition:transform .18s ease-out;
  }
  .footer-col a:hover{color:#fff;}
  .footer-col a:hover::after{transform:scaleX(1);}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.08);padding:20px 0;
    display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
    font-size:13px;color:rgba(255,255,255,.5);
  }

  /* ============ 响应式 ============ */
  @media (max-width:1023px){
    .container{padding:0 24px;}
    .nav-wrap{height:60px;}
    .nav-toggle{display:inline-flex;}
    .nav-links{
      display:none;position:fixed;left:0;right:0;top:60px;
      flex-direction:column;align-items:stretch;gap:0;
      background:var(--ink);padding:10px 20px 22px;
      border-bottom:1px solid rgba(255,255,255,.1);
      max-height:calc(100vh - 60px);overflow-y:auto;
    }
    .nav-links.open{display:flex;}
    .nav-links a{padding:14px 6px;font-size:16px;border-bottom:1px solid rgba(255,255,255,.07);}
    .nav-links a::after{display:none;}
    .nav-links a.active{color:var(--brand);}
    .mega{display:none;}
    .anchor-nav{top:60px;}
    .faq-layout{grid-template-columns:1fr;gap:32px;}
    .faq-side{position:static;}
    .check-grid{grid-template-columns:1fr;gap:32px;}
    .check-media img{aspect-ratio:16/9;}
    .entry-grid{grid-template-columns:1fr 1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .section{padding:56px 0;}
  }
  @media (max-width:767px){
    .container{padding:0 20px;}
    .cat-hero{padding:16px 0 36px;}
    .cat-hero-inner{flex-direction:column;align-items:flex-start;gap:22px;}
    .cat-hero-sub{font-size:15px;}
    .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px;gap:22px;}
    .cta-band .btn{width:100%;}
    .entry-grid{grid-template-columns:1fr;}
    .faq-item{padding:0 16px;}
    .faq-item summary{font-size:15.5px;padding:16px 0;}
    .section{padding:48px 0;}
    .cta-band-wrap{padding-bottom:56px;}
    .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:32px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }
  @media (max-width:519px){
    .logo-main{font-size:18px;}
    .logo-sub{font-size:10px;letter-spacing:1.2px;}
    .nav-right .btn{display:none;}
    .cat-hero h1{font-size:26px;}
    .check-list .num{width:28px;font-size:15px;}
    .side-card,.side-note{padding:20px;}
  }