/* roulang page: index */
:root{
  --brand-900:#08201D;
  --brand-700:#0C3B36;
  --brand-500:#17564E;
  --lime-500:#B8E62E;
  --lime-700:#8FB81C;
  --orange-500:#FF6B35;
  --paper:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E3E1D8;
  --ink:#16211F;
  --ink-2:#5A6B66;
  --r-xl:24px;
  --r-lg:16px;
  --r-md:10px;
  --r-sm:6px;
  --sh-1:0 1px 2px rgba(12,59,54,.06);
  --sh-2:0 10px 28px -12px rgba(12,59,54,.28);
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px}
a:hover{color:var(--lime-700)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font:inherit}
time,.num{font-variant-numeric:tabular-nums}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--lime-500);outline-offset:2px;border-radius:4px}

/* ---------- 容器与板块 ---------- */
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{margin-bottom:40px}
.section-head h2{font-size:28px;color:var(--brand-700);position:relative;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:2px;background:var(--lime-500)}
.section-head p{margin-top:12px;font-size:15px;color:var(--ink-2);max-width:760px}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.text-link{font-size:15px;font-weight:600;color:var(--brand-700);text-decoration:none;border-bottom:2px solid var(--lime-500);padding-bottom:2px}
.text-link:hover{color:var(--lime-700)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-md);font-size:15px;font-weight:600;text-decoration:none;border:1px solid transparent;transition:background-color .2s,color .2s,transform .2s,box-shadow .2s,border-color .2s;cursor:pointer}
.btn-lg{height:48px;padding:0 28px}
.btn-pill{border-radius:999px}
.btn-lime{background:var(--lime-500);color:var(--brand-900)}
.btn-lime:hover{background:var(--lime-700);color:var(--brand-900);transform:translateY(-1px);box-shadow:0 10px 28px -12px rgba(12,59,54,.45)}
.btn-solid{background:var(--brand-700);color:#fff}
.btn-solid:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px)}
.btn-outline{border-color:var(--lime-700);color:var(--brand-700);background:transparent}
.btn-outline:hover{background:rgba(184,230,46,.16);color:var(--brand-700)}
.btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}

/* ---------- 顶部公告条 ---------- */
.topbar{background:var(--brand-900);color:rgba(255,255,255,.82);font-size:13px}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:40px}
.topbar a{color:rgba(255,255,255,.9);text-decoration:none}
.topbar a:hover{color:var(--lime-500)}
.topbar-right{display:flex;align-items:center;gap:18px}
.topbar-right .sep{width:1px;height:14px;background:rgba(255,255,255,.22)}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:1000;background:transparent;transition:background-color .25s,box-shadow .25s}
.site-header.is-scrolled{background:#fff;box-shadow:0 2px 12px rgba(12,59,54,.10)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .25s}
.site-header.is-scrolled .nav-inner{height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
.brand-mark{width:36px;height:36px;border-radius:var(--r-md);background:linear-gradient(135deg,var(--lime-500),var(--lime-700));display:grid;place-items:center;color:var(--brand-900);font-weight:800;font-size:14px;letter-spacing:-.02em}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:20px;font-weight:700;color:#fff;letter-spacing:-.01em;white-space:nowrap}
.brand-sub{font-size:12px;color:rgba(255,255,255,.62)}
.is-scrolled .brand-name{color:var(--brand-700)}
.is-scrolled .brand-sub{color:var(--ink-2)}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:rgba(255,255,255,.88);text-decoration:none;padding:6px 0;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:3px;width:0;border-radius:2px;background:var(--lime-500);transition:width .22s}
.nav-link:hover,.nav-link.active{color:var(--lime-500)}
.nav-link:hover::after,.nav-link.active::after{width:60%}
.is-scrolled .nav-link{color:var(--ink)}
.is-scrolled .nav-link:hover,.is-scrolled .nav-link.active{color:var(--brand-700)}
.nav-actions{display:flex;align-items:center;gap:12px}
.header-login{display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 20px;border-radius:var(--r-md);background:var(--lime-500);color:var(--brand-900);font-size:15px;font-weight:600;text-decoration:none;transition:.2s}
.header-login:hover{background:var(--lime-700);color:var(--brand-900);transform:translateY(-1px)}
.header-register{display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 18px;border-radius:var(--r-md);border:1px solid rgba(255,255,255,.5);color:#fff;font-size:15px;font-weight:600;text-decoration:none;transition:.2s}
.header-register:hover{border-color:var(--lime-500);color:var(--lime-500)}
.is-scrolled .header-register{border-color:var(--line);color:var(--brand-700)}
.is-scrolled .header-register:hover{border-color:var(--lime-700);color:var(--lime-700)}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.4);background:transparent;border-radius:var(--r-md);cursor:pointer;position:relative}
.is-scrolled .nav-toggle{border-color:var(--line)}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:50%;transform:translateX(-50%);width:18px;height:2px;background:#fff;border-radius:2px;transition:.25s}
.is-scrolled .nav-toggle span,.is-scrolled .nav-toggle span::before,.is-scrolled .nav-toggle span::after{background:var(--brand-700)}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px;left:0;transform:none}
.nav-toggle span::after{top:6px;left:0;transform:none}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(8,32,29,.5);opacity:0;visibility:hidden;transition:.25s;z-index:1040}
.drawer-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{position:fixed;top:0;right:0;height:100%;width:min(86%,360px);background:var(--brand-900);transform:translateX(100%);transition:transform .3s ease;z-index:1050;padding:28px 24px;overflow-y:auto}
.nav-drawer.is-open{transform:translateX(0)}
.nav-drawer .drawer-title{font-size:13px;color:rgba(255,255,255,.55);margin-bottom:14px}
.nav-drawer a.drawer-link{display:flex;align-items:center;height:52px;color:rgba(255,255,255,.9);text-decoration:none;font-size:16px;border-bottom:1px solid rgba(255,255,255,.12)}
.nav-drawer a.drawer-link:hover{color:var(--lime-500)}
.nav-drawer .drawer-cta{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.nav-drawer .drawer-close{position:absolute;top:18px;right:18px;width:40px;height:40px;border-radius:50%;border:1px solid rgba(255,255,255,.3);background:transparent;color:#fff;font-size:20px;line-height:1;cursor:pointer}

/* ---------- Hero ---------- */
.hero{position:relative;margin-top:-72px;padding:152px 0 96px;background:linear-gradient(135deg,#08201D 0%,#0C3B36 58%,#14504A 100%);overflow:hidden}
.hero::after{content:"";position:absolute;left:-120px;bottom:-160px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(184,230,46,.16),rgba(184,230,46,0) 68%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center;position:relative;z-index:1}
.hero h1{font-size:40px;line-height:1.25;color:#fff}
.hero-sub{margin-top:18px;font-size:17px;color:rgba(255,255,255,.8);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-trust{display:flex;flex-wrap:wrap;gap:24px;margin-top:36px;padding-top:24px;border-top:1px solid rgba(255,255,255,.14)}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.75)}
.hero-trust svg{width:16px;height:16px;stroke:var(--lime-500);fill:none;stroke-width:1.6}
.hero-visual{position:relative}
.hero-img{width:100%;height:440px;object-fit:cover;border-radius:var(--r-xl);border:1px solid rgba(255,255,255,.14)}
.hero-float{position:absolute;right:20px;bottom:-24px;width:220px;background:#fff;border-radius:var(--r-lg);padding:16px 18px;box-shadow:0 18px 40px -18px rgba(8,32,29,.55)}
.hero-float .label{font-size:12px;color:var(--ink-2)}
.hero-float .value{margin-top:4px;font-size:15px;font-weight:700;color:var(--brand-700)}
.hero-float .link{display:inline-block;margin-top:10px;font-size:13px;font-weight:600;color:var(--brand-700);text-decoration:none;border-bottom:2px solid var(--lime-500)}
.hero-float .link:hover{color:var(--lime-700)}

/* ---------- Bento 功能网格 ---------- */
.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.fcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--sh-1);transition:transform .3s,box-shadow .3s}
.fcard:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.fcard-lg{grid-column:span 2;height:320px}
.fcard-md{height:320px}
.fcard-sm{height:260px}
.fcard-media{position:relative;overflow:hidden;flex-shrink:0}
.fcard-lg .fcard-media{height:168px}
.fcard-md .fcard-media{height:158px}
.fcard-sm .fcard-media{height:124px}
.fcard-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.fcard:hover .fcard-media img{transform:scale(1.03)}
.badge-tag{position:absolute;left:12px;top:12px;display:inline-block;padding:3px 9px;border-radius:var(--r-sm);font-size:12px;font-weight:600;background:rgba(184,230,46,.92);color:var(--brand-900);line-height:1.5}
.badge-tag.dark{background:rgba(8,32,29,.82);color:#fff}
.fcard-body{padding:16px 18px;display:flex;flex-direction:column;gap:8px;flex:1;min-height:0}
.fcard-title{font-size:18px;font-weight:600;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.fcard-desc{font-size:14px;line-height:1.65;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.fcard-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px}
.score{font-size:20px;font-weight:700;color:var(--orange-500);font-variant-numeric:tabular-nums}
.btn-mini{display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 16px;border-radius:var(--r-md);border:1px solid var(--line);background:transparent;color:var(--brand-700);font-size:14px;font-weight:600;text-decoration:none;transition:.2s;white-space:nowrap}
.btn-mini:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff}

/* ---------- 评价轮播 ---------- */
.review-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:32px}
.review-nav{display:flex;gap:10px}
.rev-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--brand-700);background:transparent;color:var(--brand-700);cursor:pointer;display:grid;place-items:center;transition:.2s}
.rev-btn:hover{background:var(--brand-700);color:#fff}
.rev-btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2}
.review-track{display:flex;gap:var(--gap);overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:10px;scrollbar-width:none}
.review-track::-webkit-scrollbar{display:none}
.review-card{flex:0 0 calc((100% - 48px)/3);scroll-snap-align:start;background:#FBFAF7;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 24px;display:flex;flex-direction:column;gap:16px}
.rev-score{display:flex;gap:4px}
.rev-score i{width:10px;height:10px;background:var(--lime-500);border-radius:2px;display:block}
.rev-text{font-size:16px;line-height:1.85;color:var(--ink);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.rev-user{display:flex;align-items:center;gap:12px;margin-top:auto}
.rev-avatar{width:40px;height:40px;border-radius:50%;background:var(--brand-700);color:#fff;display:grid;place-items:center;font-size:15px;font-weight:700;flex-shrink:0}
.rev-name{font-size:14px;font-weight:600;color:var(--ink)}
.rev-role{font-size:12px;color:var(--ink-2)}
.rev-dots{display:flex;gap:8px;justify-content:center;margin-top:24px}
.rev-dot{width:28px;height:4px;border-radius:2px;border:0;padding:0;background:var(--line);cursor:pointer;transition:.2s}
.rev-dot.is-active{background:var(--brand-700)}

/* ---------- 保障条 ---------- */
.guarantee{background:var(--brand-900);color:#fff;padding:56px 0}
.guarantee-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.g-item{padding:0 28px;border-left:1px solid rgba(255,255,255,.12)}
.g-item:first-child{border-left:0;padding-left:0}
.g-item svg{width:24px;height:24px;stroke:var(--lime-500);fill:none;stroke-width:1.5}
.g-item h3{margin-top:14px;font-size:16px;font-weight:600;color:#fff}
.g-item p{margin-top:6px;font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.65)}

/* ---------- CTA 条 ---------- */
.cta-band{position:relative;background:var(--brand-900);border-radius:var(--r-xl);padding:56px 48px;overflow:hidden;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band::after{content:"";position:absolute;right:-40px;bottom:-60px;width:340px;height:240px;background-image:repeating-linear-gradient(135deg,rgba(184,230,46,.8) 0 1px,transparent 1px 12px);opacity:.08;pointer-events:none}
.cta-band h2{font-size:26px;color:#fff;position:relative;z-index:1}
.cta-band p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.72);position:relative;z-index:1}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1}

/* ---------- 最新信息 ---------- */
.news-card{height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;display:flex;flex-direction:column;gap:12px;box-shadow:var(--sh-1);transition:transform .3s,box-shadow .3s}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.news-badge{align-self:flex-start;display:inline-block;padding:3px 10px;border-radius:var(--r-sm);font-size:12px;font-weight:600;background:rgba(184,230,46,.18);color:var(--brand-700)}
.news-card h3{font-size:18px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card h3 a{color:var(--ink);text-decoration:none}
.news-card h3 a:hover{color:var(--brand-700)}
.news-card p{font-size:15px;line-height:1.7;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line)}
.news-foot time{font-size:13px;color:var(--ink-2)}
.news-foot a{font-size:13px;font-weight:600;text-decoration:none;color:var(--brand-700)}
.news-foot a:hover{color:var(--lime-700)}
.empty-state{border:1px dashed var(--line);border-radius:var(--r-lg);padding:40px 24px;text-align:center;background:#FBFAF7}
.empty-state svg{width:36px;height:36px;stroke:var(--brand-500);fill:none;stroke-width:1.4;margin:0 auto 14px}
.empty-state p{font-size:15px;color:var(--ink-2);margin-bottom:18px}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 0 20px 16px;position:relative;font-size:17px;font-weight:600;color:var(--ink)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:2px;background:var(--lime-500)}
.faq-item summary .chev{width:20px;height:20px;flex-shrink:0;stroke:var(--brand-700);fill:none;stroke-width:2;transition:transform .25s}
.faq-item[open] summary{color:var(--brand-700)}
.faq-item[open] summary .chev{transform:rotate(180deg)}
.faq-body{padding:0 0 22px 16px;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.7);padding:72px 0 0;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.12)}
.foot-brand .brand-name{color:#fff}
.foot-brand .brand-sub{color:rgba(255,255,255,.5)}
.foot-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px}
.foot-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px}
.foot-col li{margin-bottom:12px}
.foot-col a{font-size:14px;color:rgba(255,255,255,.7);text-decoration:none}
.foot-col a:hover{color:var(--lime-500)}
.foot-col .contact-line{font-size:14px;color:rgba(255,255,255,.7);margin-bottom:12px}
.foot-col .contact-line strong{color:#fff;font-weight:600}
.foot-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:22px 0;font-size:13px;color:rgba(255,255,255,.5)}
.foot-bottom a{color:rgba(255,255,255,.6);text-decoration:none}
.foot-bottom a:hover{color:var(--lime-500)}

/* ---------- 返回顶部 ---------- */
.to-top{position:fixed;right:28px;bottom:28px;width:48px;height:48px;border-radius:50%;border:0;background:var(--brand-700);color:#fff;display:grid;place-items:center;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(10px);transition:.25s;z-index:900;box-shadow:0 10px 28px -12px rgba(12,59,54,.6)}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--brand-500)}
.to-top svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero h1{font-size:34px}
  .hero-grid{gap:40px}
  .review-card{flex:0 0 calc((100% - 24px)/2)}
}
@media (max-width:991px){
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .nav-links,.nav-actions .header-register{display:none}
  .nav-toggle{display:block}
  .hero{margin-top:-72px;padding:140px 0 80px}
  .hero-grid{grid-template-columns:1fr}
  .hero-img{height:340px}
  .hero-float{bottom:16px;right:16px}
  .bento{grid-template-columns:repeat(2,1fr)}
  .fcard-lg{grid-column:span 2}
  .guarantee-grid{grid-template-columns:repeat(2,1fr);gap:32px 0}
  .g-item:nth-child(3){border-left:0;padding-left:0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-band{padding:40px 28px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .wrap{padding:0 16px}
  .topbar .wrap{height:auto;padding:8px 16px;flex-direction:column;align-items:flex-start;gap:4px}
  .topbar-right{flex-wrap:wrap;gap:12px}
  .brand-name{font-size:16px}
  .hero{padding:132px 0 64px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15px}
  .hero-img{height:260px}
  .hero-float{position:static;width:100%;margin-top:16px;box-shadow:var(--sh-1)}
  .bento{grid-template-columns:1fr}
  .fcard-lg,.fcard-md,.fcard-sm{grid-column:span 1;height:auto;min-height:0}
  .fcard-lg .fcard-media,.fcard-md .fcard-media,.fcard-sm .fcard-media{height:170px}
  .review-card{flex:0 0 100%}
  .guarantee-grid{grid-template-columns:1fr;gap:28px 0}
  .g-item{padding:0;border-left:0}
  .cta-band{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .foot-grid{grid-template-columns:1fr;gap:32px}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:575px){
  .hero-actions .btn{width:100%}
  .section-head h2{font-size:23px}
  .cta-band h2{font-size:22px}
}

/* roulang page: article */
:root{
  --brand-900:#08201D;
  --brand-700:#0C3B36;
  --brand-500:#17564E;
  --lime-500:#B8E62E;
  --lime-700:#8FB81C;
  --orange-500:#FF6B35;
  --paper:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E3E1D8;
  --ink:#16211F;
  --ink-2:#5A6B66;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(12,59,54,.06);
  --shadow-2:0 10px 28px -12px rgba(12,59,54,.28);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:var(--brand-700);text-decoration:none}
a:hover{color:var(--lime-700)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;color:var(--brand-700)}
p{margin:0}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (max-width:767px){.wrap{padding:0 16px}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(247,246,242,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(12,59,54,.10);background:#F7F6F2}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .25s ease}
.site-header.is-scrolled .nav-inner{height:64px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex:0 0 auto}
.brand-mark{
  width:42px;height:42px;border-radius:12px;background:var(--brand-700);
  color:var(--lime-500);display:grid;place-items:center;
  font-size:15px;font-weight:800;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:19px;font-weight:700;color:var(--brand-700);white-space:nowrap}
.brand-sub{font-size:11px;color:var(--ink-2);letter-spacing:.04em}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{position:relative;display:inline-block;padding:6px 0;font-size:15px;color:var(--ink);text-decoration:none;transition:color .2s ease}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:3px;width:0;
  background:var(--lime-500);border-radius:2px;transition:width .22s ease;
}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after,.nav-link.active::after{width:60%}
.nav-link.active{color:var(--brand-700);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:8px}
.header-login{
  display:inline-block;padding:10px 20px;border-radius:var(--radius-sm);
  background:var(--brand-700);color:#fff;font-size:14px;font-weight:600;
  text-decoration:none;transition:background .2s ease,transform .2s ease;
}
.header-login:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px)}
.header-register{
  display:inline-block;padding:9px 18px;border-radius:var(--radius-sm);
  border:1px solid var(--brand-700);color:var(--brand-700);
  font-size:14px;font-weight:600;text-decoration:none;transition:all .2s ease;
}
.header-register:hover{background:var(--brand-700);color:#fff}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;padding:0;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--brand-700);border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-700);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

@media (max-width:991px){
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:290px;
    background:var(--brand-900);flex-direction:column;align-items:flex-start;
    padding:92px 24px 32px;gap:0;margin-left:0;
    transform:translateX(105%);transition:transform .3s ease;z-index:1200;
    overflow-y:auto;box-shadow:-12px 0 32px rgba(8,32,29,.28);
  }
  .nav-links.open{transform:translateX(0)}
  .nav-link{
    width:100%;padding:16px 0;font-size:16px;color:#E7EFEC;
    border-bottom:1px solid rgba(255,255,255,.12);
  }
  .nav-link::after{display:none}
  .nav-link.active,.nav-link:hover{color:var(--lime-500)}
  .nav-actions{margin-left:auto}
  .nav-toggle{display:flex;order:3}
  .header-register{display:none}
}
@media (max-width:575px){
  .brand-name{font-size:16px;white-space:normal;line-height:1.25;max-width:150px}
  .brand-mark{width:38px;height:38px;border-radius:10px;font-size:13px}
  .brand-sub{display:none}
  .header-login{padding:9px 14px;font-size:13px}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  text-decoration:none;transition:all .2s ease;
}
.btn-primary{background:var(--lime-500);color:var(--brand-900)}
.btn-primary:hover{background:var(--lime-700);color:var(--brand-900);transform:translateY(-1px);box-shadow:0 10px 20px -12px rgba(12,59,54,.5)}
.btn-ghost{border-color:var(--brand-700);color:var(--brand-700);background:transparent}
.btn-ghost:hover{background:var(--brand-700);color:#fff}
@media (max-width:575px){.btn{width:100%}}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:22px 0 0}
.breadcrumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-2)}
.breadcrumb-nav a{color:var(--ink-2)}
.breadcrumb-nav a:hover{color:var(--brand-700)}
.breadcrumb-nav .sep{color:#BCB9AF}
.breadcrumb-nav .current{
  color:var(--brand-700);max-width:340px;overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- article layout ---------- */
.article-shell{padding:26px 0 96px}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:48px}
@media (min-width:1200px){
  .article-grid{grid-template-columns:minmax(0,1fr) 300px}
}
.article-main{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:44px 48px 52px;box-shadow:var(--shadow-1);
}
@media (max-width:991px){.article-main{padding:32px 26px 38px;border-radius:var(--radius-md)}}
@media (max-width:575px){.article-main{padding:26px 18px 32px}}

.article-head{border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:34px}
.chip{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:6px;
  background:rgba(184,230,46,.20);color:var(--brand-700);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.article-head h1{
  font-size:36px;line-height:1.35;font-weight:700;color:var(--brand-700);
  margin:16px 0 18px;
}
@media (max-width:991px){.article-head h1{font-size:29px}}
@media (max-width:575px){.article-head h1{font-size:24px;line-height:1.4}}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:18px;font-size:13px;color:var(--ink-2)}
.meta-row time{font-variant-numeric:tabular-nums}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#C9C6BC;display:inline-block}

/* ---------- article body ---------- */
.article-body{font-size:17.5px;line-height:1.9;color:var(--ink);max-width:820px}
@media (max-width:575px){.article-body{font-size:16.5px;line-height:1.85}}
.article-body p{margin:0 0 1.4em}
.article-body h2{
  position:relative;font-size:24px;line-height:1.4;font-weight:700;
  margin:40px 0 16px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.15em;bottom:.15em;width:4px;
  border-radius:2px;background:var(--lime-500);
}
.article-body h3{font-size:19px;line-height:1.45;font-weight:700;margin:28px 0 12px;color:var(--brand-700)}
.article-body h4{font-size:17px;font-weight:700;margin:22px 0 10px;color:var(--brand-700)}
.article-body a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--lime-700)}
.article-body strong{font-weight:700}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:#FBFAF7;
  border-left:4px solid var(--lime-500);border-radius:0 12px 12px 0;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul{list-style:none;margin:0 0 1.4em;padding-left:0}
.article-body ul li{position:relative;padding-left:22px;margin:.45em 0;line-height:1.8}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:8px;height:8px;
  border-radius:2px;background:var(--brand-700);
}
.article-body ol{margin:0 0 1.4em;padding-left:1.5em}
.article-body ol li{margin:.45em 0;line-height:1.8}
.article-body ol li::marker{color:var(--brand-700);font-weight:700}
.article-body img{
  max-width:100%;height:auto;border-radius:14px;margin:26px auto;
  border:1px solid var(--line);
}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--ink-2);text-align:center;margin-top:10px}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.article-body th{background:#FBFAF7;font-weight:600;color:var(--brand-700)}
.article-body hr{border:none;border-top:1px solid var(--line);margin:34px 0}

/* ---------- empty state ---------- */
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-md);
  padding:52px 28px;text-align:center;background:#FDFCFA;
}
.empty-state h2{font-size:22px;margin-bottom:12px}
.empty-state p{font-size:15px;color:var(--ink-2);max-width:520px;margin:0 auto 24px}
.empty-state .btn{width:auto}

/* ---------- article foot ---------- */
.article-foot{margin-top:44px;padding-top:8px}
.tag-row{
  display:flex;flex-wrap:wrap;gap:10px;padding-top:26px;
  border-top:1px solid var(--line);
}
.tag{
  display:inline-block;padding:7px 15px;border-radius:999px;background:#fff;
  border:1px solid var(--line);font-size:13px;color:var(--ink-2);
  transition:all .2s ease;
}
.tag:hover{border-color:var(--lime-700);color:var(--brand-700);background:rgba(184,230,46,.12)}
.article-back{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.article-back .btn{height:46px}
@media (max-width:575px){.article-back .btn{width:100%}}

/* ---------- sidebar ---------- */
.side{display:flex;flex-direction:column;gap:24px}
@media (min-width:1200px){.side{position:sticky;top:96px;align-self:start}}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:22px;box-shadow:var(--shadow-1);
}
.side-card h3{
  position:relative;font-size:15px;font-weight:700;margin:0 0 16px;padding-left:11px;
}
.side-card h3::before{
  content:"";position:absolute;left:0;top:3px;bottom:3px;width:3px;
  border-radius:2px;background:var(--lime-500);
}
.side-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:13px}
.side-list li{padding-bottom:13px;border-bottom:1px dashed var(--line)}
.side-list li:last-child{padding-bottom:0;border-bottom:none}
.side-list a{font-size:14px;line-height:1.6;color:var(--ink);display:block}
.side-list a:hover{color:var(--brand-700)}
.side-note{
  background:var(--brand-900);border-radius:var(--radius-md);padding:24px 22px;color:#DCE9E6;
}
.side-note h3{color:#fff;font-size:16px}
.side-note h3::before{background:var(--lime-500)}
.side-note p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.72);margin-bottom:18px}
.side-note .btn{height:42px;font-size:14px;padding:0 18px}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.site-footer .brand{margin-bottom:18px}
.site-footer .brand-mark{background:var(--lime-500);color:var(--brand-900)}
.site-footer .brand-name{color:#fff}
.site-footer .brand-sub{color:rgba(255,255,255,.55)}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}
@media (max-width:991px){.foot-grid{grid-template-columns:1fr 1fr;gap:36px}}
@media (max-width:575px){.foot-grid{grid-template-columns:1fr;gap:32px}}
.foot-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);margin:0}
.foot-col h4{font-size:15px;font-weight:600;color:#fff;margin:0 0 16px}
.foot-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px}
.foot-col a{font-size:14px;color:rgba(255,255,255,.68);transition:color .2s ease}
.foot-col a:hover{color:var(--lime-500)}
.contact-line{font-size:14px;color:rgba(255,255,255,.68);margin:0 0 10px}
.contact-line strong{color:#fff;font-weight:600;display:block;margin-top:2px}
.foot-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;display:flex;flex-wrap:wrap;justify-content:space-between;
  gap:10px;font-size:13px;color:rgba(255,255,255,.55);
}
@media (max-width:575px){.foot-bottom{flex-direction:column}}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  border:none;background:var(--brand-700);color:#fff;display:grid;place-items:center;
  cursor:pointer;opacity:0;pointer-events:none;transition:all .25s ease;z-index:900;
  box-shadow:0 10px 24px -12px rgba(12,59,54,.6);
}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{background:var(--brand-500);transform:translateY(-2px)}
@media (max-width:575px){.to-top{right:16px;bottom:16px;width:44px;height:44px}}

:focus-visible{outline:2px solid var(--lime-500);outline-offset:2px}

/* roulang page: category1 */
:root{
  --brand-900:#08201D;
  --brand-700:#0C3B36;
  --brand-500:#17564E;
  --lime-500:#B8E62E;
  --lime-700:#8FB81C;
  --orange-500:#FF6B35;
  --paper:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E3E1D8;
  --ink:#16211F;
  --ink-2:#5A6B66;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --sh-1:0 1px 2px rgba(12,59,54,.06);
  --sh-2:0 10px 28px -12px rgba(12,59,54,.28);
  --wrap:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--brand-900);letter-spacing:-.01em;font-weight:700;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:28px;line-height:1.3;}
h3{font-size:20px;line-height:1.4;}
p{margin:0;}
img{display:block;max-width:100%;height:auto;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--lime-700);text-decoration:underline;text-underline-offset:3px;}
button{font:inherit;cursor:pointer;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime-500);outline-offset:2px;border-radius:4px;}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:200;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.97);
  box-shadow:0 2px 12px rgba(12,59,54,.10);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;}
.brand{display:flex;align-items:center;gap:12px;color:inherit;}
.brand:hover{text-decoration:none;color:inherit;}
.brand-mark{
  flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  background:var(--brand-700);color:var(--lime-500);
  font-size:16px;font-weight:800;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:19px;font-weight:700;color:var(--brand-900);white-space:nowrap;}
.brand-sub{font-size:12px;color:var(--ink-2);}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-link{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:var(--ink);}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;width:60%;height:3px;border-radius:2px;
  background:var(--lime-500);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--brand-700);text-decoration:none;}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand-700);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.header-login{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;border-radius:var(--r-sm);
  background:var(--brand-700);color:#fff;font-size:15px;font-weight:600;
  transition:background .2s ease,transform .2s ease;
}
.header-login:hover{background:var(--brand-500);color:#fff;text-decoration:none;transform:translateY(-1px);}
.header-register{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 18px;border-radius:var(--r-sm);
  border:1px solid var(--lime-700);color:var(--brand-700);font-size:15px;font-weight:600;
  transition:background .2s ease;
}
.header-register:hover{background:rgba(184,230,46,.18);color:var(--brand-700);text-decoration:none;}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;position:relative;padding:0;}
.nav-toggle span{position:absolute;left:50%;top:50%;width:18px;height:2px;background:var(--brand-700);transform:translate(-50%,-50%);transition:background .2s ease;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:inherit;transition:transform .25s ease;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ============ 按钮 / 标签 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);
  border:1px solid transparent;font-size:15px;font-weight:600;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-lime{background:var(--lime-500);color:#08201D;border-radius:999px;}
.btn-lime:hover{background:var(--lime-700);color:#08201D;text-decoration:none;transform:translateY(-1px);box-shadow:0 10px 22px -14px rgba(8,32,29,.6);}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.5);color:#fff;border-radius:999px;}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);color:#fff;text-decoration:none;}
.btn-outline{background:#fff;border-color:var(--lime-700);color:var(--brand-700);}
.btn-outline:hover{background:rgba(184,230,46,.18);color:var(--brand-700);text-decoration:none;}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;margin-bottom:14px;
  border-radius:6px;background:rgba(184,230,46,.18);color:var(--brand-700);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.tag-dark{background:rgba(184,230,46,.14);color:var(--lime-500);}

/* ============ 分类页窄横幅 ============ */
.page-banner{position:relative;overflow:hidden;background:var(--brand-900);min-height:200px;display:flex;align-items:center;}
.banner-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.03);}
.banner-mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,32,29,.94) 0%,rgba(8,32,29,.80) 55%,rgba(8,32,29,.60) 100%);}
.banner-inner{position:relative;z-index:2;padding-top:36px;padding-bottom:36px;color:#fff;}
.crumbs{font-size:13px;color:rgba(255,255,255,.68);}
.crumbs a{color:rgba(255,255,255,.68);}
.crumbs a:hover{color:var(--lime-500);text-decoration:none;}
.crumbs span{color:#fff;}
.page-banner h1{color:#fff;font-size:34px;line-height:1.3;margin:12px 0 12px;max-width:900px;}
.page-banner .lead{font-size:15px;line-height:1.8;color:rgba(255,255,255,.82);max-width:760px;margin-bottom:22px;}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 板块通用 ============ */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-head h2{display:flex;align-items:flex-start;gap:12px;}
.sec-head h2::before{content:"";flex:0 0 auto;width:4px;height:26px;margin-top:4px;border-radius:2px;background:var(--lime-500);}
.sec-head p{margin-top:14px;font-size:15px;line-height:1.85;color:var(--ink-2);}
.anchor-offset{scroll-margin-top:96px;}

/* ============ 图文交错行 ============ */
.alt-list{display:flex;flex-direction:column;}
.alt-row{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  padding:44px 0;border-top:1px solid var(--line);
}
.alt-row:first-child{border-top:0;padding-top:0;}
.alt-row:last-child{padding-bottom:0;}
.alt-media{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--sh-1);}
.alt-media img{width:100%;height:320px;object-fit:cover;transition:transform .4s ease;}
.alt-row:hover .alt-media img{transform:scale(1.04);}
.alt-row.reverse .alt-media{order:2;}
.alt-body h3{font-size:23px;line-height:1.4;}
.alt-body > p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--ink-2);}
.check-list{margin:18px 0 22px;display:grid;gap:10px;}
.check-list li{position:relative;padding-left:22px;font-size:15px;line-height:1.75;color:var(--ink-2);}
.check-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:var(--lime-500);}
.check-list li strong{color:var(--ink);font-weight:600;}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.step{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(143,184,28,.5);}
.step-num{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--lime-700);font-variant-numeric:tabular-nums;}
.step h3{margin-top:12px;font-size:18px;}
.step p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--ink-2);}
.step-line{margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-2);}

/* ============ 深色特性条 ============ */
.feature-band{
  background:var(--brand-900);border-radius:var(--r-lg);
  padding:44px 40px;color:#fff;
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
}
.feature-item{padding:0 26px;border-left:1px solid rgba(255,255,255,.12);}
.feature-item:first-child{border-left:0;padding-left:0;}
.feature-item:last-child{padding-right:0;}
.feature-ico{
  width:24px;height:24px;border-radius:6px;border:1.5px solid var(--lime-500);
  position:relative;margin-bottom:14px;
}
.feature-ico::after{content:"";position:absolute;left:6px;top:6px;width:9px;height:9px;border-radius:2px;background:var(--lime-500);}
.feature-item h3{color:#fff;font-size:16px;font-weight:600;}
.feature-item p{margin-top:8px;font-size:13px;line-height:1.75;color:rgba(255,255,255,.66);}

/* ============ FAQ ============ */
.faq{max-width:860px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 0 20px 18px;position:relative;
  background:none;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--brand-900);
  transition:color .2s ease;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:2px;background:var(--lime-500);
}
.faq-q:hover{color:var(--brand-500);}
.faq-item.open .faq-q{color:var(--brand-500);}
.chev{flex:0 0 auto;width:10px;height:10px;border-right:2px solid var(--brand-700);border-bottom:2px solid var(--brand-700);transform:rotate(45deg);transition:transform .25s ease;}
.faq-item.open .chev{transform:rotate(-135deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:0 0 22px 18px;font-size:15px;line-height:1.85;color:var(--ink-2);}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--brand-900);color:#fff;
  padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.08;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.9) 0 2px,transparent 2px 14px);
}
.cta-copy{position:relative;z-index:2;max-width:640px;}
.cta-copy h2{color:#fff;font-size:28px;}
.cta-copy p{margin-top:12px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.72);}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 相关分类 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.rel-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-1);color:inherit;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(143,184,28,.5);text-decoration:none;color:inherit;}
.rel-card .rel-tag{font-size:12px;font-weight:600;color:var(--lime-700);letter-spacing:.04em;}
.rel-card h3{margin-top:10px;font-size:18px;}
.rel-card p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--ink-2);}
.rel-more{margin-top:18px;font-size:14px;font-weight:600;color:var(--brand-700);}
.rel-card:hover .rel-more{color:var(--lime-700);}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.7);margin-top:0;padding-top:64px;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.site-footer .brand-mark{background:rgba(184,230,46,.14);color:var(--lime-500);}
.site-footer .brand-name{color:#fff;}
.site-footer .brand-sub{color:rgba(255,255,255,.55);}
.foot-brand p{margin-top:18px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);}
.foot-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.foot-col ul{display:grid;gap:10px;}
.foot-col a{font-size:14px;color:rgba(255,255,255,.7);}
.foot-col a:hover{color:var(--lime-500);text-decoration:none;}
.contact-line{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);margin-bottom:10px;}
.contact-line strong{color:#fff;font-weight:600;}
.foot-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:150;
  width:48px;height:48px;border-radius:50%;border:0;
  background:var(--brand-700);color:#fff;font-size:18px;line-height:1;
  display:inline-flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,background .2s ease;
  box-shadow:0 10px 24px -14px rgba(8,32,29,.7);
}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0);}
.to-top:hover{background:var(--brand-500);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .section{padding:72px 0;}
  .section-tight{padding:60px 0;}
  .page-banner h1{font-size:30px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .feature-band{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .feature-item:nth-child(3){border-left:0;padding-left:0;}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}
@media (max-width:991px){
  .nav-toggle{display:block;z-index:400;}
  .nav-links{
    position:fixed;top:0;right:0;z-index:300;
    width:min(320px,84vw);height:100vh;
    flex-direction:column;align-items:stretch;gap:0;
    padding:92px 20px 28px;
    background:var(--brand-900);
    transform:translateX(100%);
    transition:transform .3s ease;
    box-shadow:-12px 0 32px -20px rgba(0,0,0,.7);
  }
  .nav-links.open{transform:translateX(0);}
  .nav-link{
    display:flex;align-items:center;height:52px;padding:0;
    font-size:16px;color:#EAF3F0;
    border-bottom:1px solid rgba(255,255,255,.12);
  }
  .nav-link::after{display:none;}
  .nav-link:hover{color:#fff;text-decoration:none;}
  .nav-link.active{color:var(--lime-500);font-weight:600;}
  .alt-row{grid-template-columns:1fr;gap:24px;padding:32px 0;}
  .alt-row.reverse .alt-media{order:0;}
  .alt-media img{height:260px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px;}
  .foot-grid{grid-template-columns:1fr 1fr;}
  .foot-brand{grid-column:1 / -1;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .wrap{padding:0 16px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  h2{font-size:24px;}
  .page-banner h1{font-size:25px;}
  .page-banner .lead{font-size:14px;}
  .steps{grid-template-columns:1fr;}
  .feature-band{grid-template-columns:1fr;padding:32px 24px;gap:24px;}
  .feature-item{padding:0;border-left:0;border-top:1px solid rgba(255,255,255,.12);padding-top:24px;}
  .feature-item:first-child{border-top:0;padding-top:0;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-copy h2{font-size:23px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .section-tight{padding:52px 0;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:575px){
  .brand-name{font-size:15px;}
  .brand-sub{display:none;}
  .brand-mark{width:36px;height:36px;border-radius:10px;font-size:14px;}
  .nav-inner{min-height:62px;}
  .header-login,.header-register{display:none;}
  .banner-inner{padding-top:28px;padding-bottom:28px;}
  .alt-media img{height:210px;}
  .banner-actions .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --brand-900:#08201D;
  --brand-700:#0C3B36;
  --brand-500:#17564E;
  --lime-500:#B8E62E;
  --lime-700:#8FB81C;
  --orange-500:#FF6B35;
  --paper:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E3E1D8;
  --ink:#16211F;
  --ink-2:#5A6B66;
  --radius-lg:24px;
  --radius:16px;
  --radius-sm:10px;
  --radius-xs:6px;
  --shadow-1:0 1px 2px rgba(12,59,54,.06);
  --shadow-2:0 10px 28px -12px rgba(12,59,54,.28);
  --container:1240px;
  --nav-h:72px;
}

*,*::before,*::after{box-sizing:border-box;}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}

body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}

img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;text-underline-offset:3px;transition:color .2s ease;}
a:hover{color:var(--lime-700);text-decoration:underline;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-0.01em;font-weight:700;color:var(--ink);}
p{margin:0;}
ul{list-style:none;margin:0;padding:0;}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--lime-500);outline-offset:2px;border-radius:6px;}

.wrap{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%;}
.sec{padding:96px 0;}
.sec-tight{padding:64px 0;}
.sec-head{margin-bottom:36px;}
.sec-head h2{font-size:28px;line-height:1.3;}
.sec-head p{margin-top:12px;font-size:15.5px;color:var(--ink-2);max-width:760px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-500);letter-spacing:.04em;margin-bottom:12px;}
.eyebrow::before{content:"";width:18px;height:3px;border-radius:2px;background:var(--lime-500);}

/* ---------- 按钮 ---------- */
.btn-main,.btn-line,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;border-radius:var(--radius-sm);cursor:pointer;border:1px solid transparent;transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;text-decoration:none;}
.btn-main{height:48px;padding:0 28px;background:var(--lime-500);color:var(--brand-900);border-radius:999px;}
.btn-main:hover{background:#C6F043;color:var(--brand-900);text-decoration:none;transform:translateY(-1px);box-shadow:0 12px 26px -14px rgba(184,230,46,.85);}
.btn-main:active{transform:translateY(0);}
.btn-line{height:48px;padding:0 28px;border-color:rgba(255,255,255,.55);color:#fff;background:transparent;border-radius:999px;}
.btn-line:hover{background:#fff;color:var(--brand-900);text-decoration:none;border-color:#fff;}
.btn-ghost{height:40px;padding:0 18px;border-color:var(--line);background:var(--surface);color:var(--brand-700);font-size:14px;}
.btn-ghost:hover{border-color:var(--lime-700);background:rgba(184,230,46,.12);color:var(--brand-700);text-decoration:none;transform:translateY(-1px);}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:90;background:#F7F6F2;border-bottom:1px solid var(--line);transition:box-shadow .25s ease,background .25s ease;}
.site-header.is-scrolled{background:#FFFFFF;box-shadow:0 2px 12px rgba(12,59,54,.10);}
.nav-inner{display:flex;align-items:center;gap:20px;height:var(--nav-h);transition:height .25s ease;}
.site-header.is-scrolled .nav-inner{height:64px;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0;}
.brand:hover{text-decoration:none;}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--brand-700);color:var(--lime-500);display:grid;place-items:center;font-weight:800;font-size:15px;letter-spacing:.02em;flex-shrink:0;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:18px;font-weight:700;color:var(--brand-700);white-space:nowrap;}
.brand-sub{font-size:12px;color:var(--ink-2);}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto;}
.nav-link{position:relative;font-size:15px;color:var(--ink);padding:6px 0;white-space:nowrap;}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:3px;width:0;border-radius:2px;background:var(--lime-500);transition:width .22s ease;}
.nav-link:hover{color:var(--brand-700);text-decoration:none;}
.nav-link:hover::after{width:60%;}
.nav-link.active{color:var(--brand-700);font-weight:600;}
.nav-link.active::after{width:60%;}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:6px;}
.header-login{display:inline-flex;align-items:center;height:42px;padding:0 20px;border-radius:var(--radius-sm);background:var(--brand-700);color:#fff;font-size:14px;font-weight:600;transition:background .2s ease,transform .2s ease;}
.header-login:hover{background:var(--brand-500);color:#fff;text-decoration:none;transform:translateY(-1px);}
.header-register{display:inline-flex;align-items:center;height:42px;padding:0 18px;border-radius:var(--radius-sm);border:1px solid var(--line);background:#fff;color:var(--brand-700);font-size:14px;font-weight:600;}
.header-register:hover{border-color:var(--lime-700);color:var(--brand-700);text-decoration:none;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;position:relative;cursor:pointer;flex-shrink:0;}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{position:absolute;left:50%;transform:translateX(-50%);width:18px;height:2px;background:var(--brand-700);border-radius:2px;transition:transform .25s ease,opacity .2s ease;}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);}

/* ---------- 页面窄横幅 ---------- */
.page-banner{
  position:relative;
  min-height:200px;
  display:flex;
  align-items:center;
  color:#fff;
  background-image:linear-gradient(105deg,rgba(8,32,29,.94) 0%,rgba(8,32,29,.80) 52%,rgba(12,59,54,.62) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-banner::after{content:"";position:absolute;left:0;bottom:0;width:120px;height:3px;background:var(--lime-500);}
.page-banner .wrap{padding-top:40px;padding-bottom:40px;}
.crumb{font-size:13px;color:rgba(255,255,255,.72);display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb a{color:rgba(255,255,255,.72);}
.crumb a:hover{color:var(--lime-500);text-decoration:none;}
.crumb span.sep{color:rgba(255,255,255,.4);}
.crumb .current{color:var(--lime-500);}
.page-banner h1{font-size:34px;line-height:1.25;color:#fff;margin:14px 0 12px;}
.banner-lead{font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.82);max-width:760px;}
.banner-actions{margin-top:20px;display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 主内容区 ---------- */
.content-main{padding:64px 0 0;}
.block-title{display:flex;align-items:center;gap:12px;margin-bottom:8px;}
.block-title h2{font-size:24px;line-height:1.35;}
.block-title::before{content:"";width:3px;height:22px;border-radius:2px;background:var(--lime-500);flex-shrink:0;}
.block-desc{font-size:15px;color:var(--ink-2);margin-bottom:24px;}

.svc-list{display:flex;flex-direction:column;gap:20px;}
.svc-card{
  display:grid;
  grid-template-columns:160px minmax(0,1fr);
  gap:20px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:20px;
  box-shadow:var(--shadow-1);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.svc-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D7D4C8;}
.svc-thumb{width:160px;height:120px;border-radius:12px;overflow:hidden;background:#EFEEE7;flex-shrink:0;}
.svc-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.svc-card:hover .svc-thumb img{transform:scale(1.04);}
.svc-body h3{font-size:18px;line-height:1.4;margin-bottom:8px;}
.svc-body p{font-size:14.5px;line-height:1.8;color:var(--ink-2);margin-bottom:12px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
.tag{display:inline-block;font-size:12px;line-height:1;padding:6px 10px;border-radius:var(--radius-xs);background:rgba(184,230,46,.18);color:var(--brand-700);font-weight:600;}
.tag-plain{background:#F1F0EA;color:var(--ink-2);}

/* ---------- 侧栏 ---------- */
.side-col{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px;}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-1);}
.side-card h3{font-size:16.5px;line-height:1.4;margin-bottom:16px;padding-left:12px;position:relative;}
.side-card h3::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:3px;border-radius:2px;background:var(--lime-500);}
.anchor-list{display:flex;flex-direction:column;}
.anchor-list a{display:flex;align-items:center;gap:10px;padding:11px 2px;font-size:14.5px;color:var(--ink);border-bottom:1px dashed var(--line);transition:color .2s ease,padding-left .2s ease;}
.anchor-list a:last-child{border-bottom:none;}
.anchor-list a:hover{color:var(--brand-700);text-decoration:none;padding-left:6px;}
.anchor-num{width:22px;height:22px;border-radius:50%;border:1px solid var(--lime-700);color:var(--brand-700);font-size:12px;display:grid;place-items:center;flex-shrink:0;font-weight:600;}
.side-cta{background:var(--brand-900);border-color:var(--brand-900);color:rgba(255,255,255,.8);}
.side-cta h3{color:#fff;}
.side-cta p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.75);margin-bottom:16px;}
.side-cta .side-note{font-size:13px;color:rgba(255,255,255,.55);margin-top:12px;margin-bottom:0;}
.side-cta .btn-main{width:100%;height:46px;}

/* ---------- 流程 ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.flow-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;box-shadow:var(--shadow-1);transition:transform .28s ease,box-shadow .28s ease;}
.flow-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.flow-num{width:34px;height:34px;border-radius:50%;background:var(--brand-700);color:var(--lime-500);display:grid;place-items:center;font-weight:700;font-size:14px;margin-bottom:16px;}
.flow-item h3{font-size:17px;margin-bottom:8px;}
.flow-item p{font-size:14px;line-height:1.8;color:var(--ink-2);}

/* ---------- 适用场景 ---------- */
.scene-band{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-1);}
.scene-band h2{font-size:22px;margin-bottom:14px;}
.scene-band p{font-size:15px;color:var(--ink-2);margin-bottom:20px;max-width:820px;}
.scene-tags{display:flex;flex-wrap:wrap;gap:10px;}
.scene-tags span{font-size:13.5px;padding:9px 16px;border-radius:999px;border:1px solid var(--line);background:#FBFAF7;color:var(--ink);transition:border-color .2s ease,color .2s ease,background .2s ease;}
.scene-tags span:hover{border-color:var(--lime-700);background:rgba(184,230,46,.14);color:var(--brand-700);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);padding:20px 0;}
.faq-item:first-of-type{border-top:1px solid var(--line);}
.faq-item summary{list-style:none;cursor:pointer;position:relative;font-size:17px;font-weight:600;color:var(--ink);padding:0 40px 0 18px;transition:color .2s ease;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:3px;border-radius:2px;background:var(--lime-500);transition:background .2s ease;}
.faq-item summary::after{content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);font-size:20px;line-height:1;color:var(--ink-2);transition:transform .25s ease,color .2s ease;}
.faq-item[open] summary{color:var(--brand-700);}
.faq-item[open] summary::after{content:"−";color:var(--brand-700);transform:translateY(-50%) rotate(180deg);}
.faq-answer{font-size:15px;line-height:1.85;color:var(--ink-2);padding:14px 40px 0 18px;}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.rel-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;transition:transform .28s ease,box-shadow .28s ease;}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.rel-card img{width:100%;height:150px;object-fit:cover;}
.rel-card .rel-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.rel-card h3{font-size:17px;margin-bottom:8px;}
.rel-card p{font-size:14px;color:var(--ink-2);margin-bottom:16px;flex:1;}
.rel-link{font-size:14px;font-weight:600;color:var(--brand-700);display:inline-flex;align-items:center;gap:6px;}
.rel-link:hover{color:var(--lime-700);text-decoration:none;gap:10px;}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;
  background:var(--brand-900);
  color:#fff;
  border-radius:var(--radius-lg);
  padding:44px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  overflow:hidden;
}
.cta-band::after{content:"";position:absolute;right:-60px;bottom:-70px;width:380px;height:220px;background:repeating-linear-gradient(135deg,rgba(184,230,46,.10) 0 2px,transparent 2px 11px);pointer-events:none;}
.cta-band h2{font-size:26px;line-height:1.35;color:#fff;margin-bottom:10px;position:relative;z-index:1;}
.cta-band p{font-size:15px;color:rgba(255,255,255,.76);max-width:620px;position:relative;z-index:1;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1;flex-shrink:0;}

/* ---------- 返回顶部 ---------- */
.to-top{position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;border:none;background:var(--brand-700);color:#fff;display:grid;place-items:center;font-size:16px;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .3s ease,transform .3s ease,background .2s ease,visibility .3s ease;z-index:80;box-shadow:0 10px 24px -12px rgba(12,59,54,.6);}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-500);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);margin-top:96px;padding-top:64px;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);}
.foot-brand .brand-mark{background:var(--lime-500);color:var(--brand-900);}
.foot-brand .brand-name{color:#fff;white-space:nowrap;}
.foot-brand .brand-sub{color:rgba(255,255,255,.55);}
.foot-brand p{margin-top:16px;font-size:14px;line-height:1.85;max-width:360px;color:rgba(255,255,255,.68);}
.foot-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.foot-col li{margin-bottom:10px;}
.foot-col a{font-size:14px;color:rgba(255,255,255,.7);}
.foot-col a:hover{color:var(--lime-500);text-decoration:none;}
.contact-line{font-size:14px;margin-bottom:8px;color:rgba(255,255,255,.7);}
.contact-line strong{color:#fff;font-weight:600;}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding:22px 0;font-size:13px;color:rgba(255,255,255,.55);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .flow-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (max-width:991.98px){
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:min(320px,86vw);
    background:var(--brand-900);
    flex-direction:column;align-items:stretch;gap:0;
    padding:88px 20px 28px;margin-left:0;
    transform:translateX(100%);transition:transform .28s ease;z-index:95;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-link{color:#EAF2EF;font-size:16px;height:52px;display:flex;align-items:center;border-bottom:1px solid rgba(255,255,255,.12);padding:0;}
  .nav-link::after{display:none;}
  .nav-link:hover{color:var(--lime-500);}
  .nav-link.active{color:var(--lime-500);font-weight:600;}
  .nav-toggle{display:block;margin-left:auto;}
  .nav-actions{margin-left:12px;}
  .header-register{display:none;}
  .side-col{position:static;}
  .sec{padding:72px 0;}
  .page-banner h1{font-size:30px;}
}

@media (max-width:767.98px){
  .wrap{padding:0 16px;}
  .sec{padding:56px 0;}
  .sec-head h2{font-size:24px;}
  .svc-card{grid-template-columns:1fr;padding:18px;}
  .svc-thumb{width:100%;height:170px;}
  .flow-grid{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px;}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-main,.cta-actions .btn-line{flex:1 1 100%;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .foot-brand{grid-column:1 / -1;}
  .page-banner h1{font-size:26px;}
  .banner-lead{font-size:15px;}
  .scene-band{padding:24px 20px;}
  .faq-item summary{font-size:16px;}
}

@media (max-width:575.98px){
  .brand-name{font-size:16px;white-space:normal;line-height:1.2;}
  .brand-sub{font-size:11.5px;}
  .nav-inner{height:64px;}
  .header-login{height:38px;padding:0 14px;font-size:13px;}
  .banner-actions{width:100%;}
  .banner-actions .btn-main{width:100%;}
  .btn-main,.btn-line{width:100%;}
  .to-top{right:16px;bottom:16px;width:44px;height:44px;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
  .content-main{padding-top:48px;}
}

/* roulang page: category3 */
:root{
  --brand-900:#08201D;
  --brand-700:#0C3B36;
  --brand-500:#17564E;
  --lime-500:#B8E62E;
  --lime-700:#8FB81C;
  --orange-500:#FF6B35;
  --paper:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E3E1D8;
  --ink:#16211F;
  --ink-2:#5A6B66;
  --r-xl:24px;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --r-xs:6px;
  --sh-1:0 1px 2px rgba(12,59,54,.06);
  --sh-2:0 10px 28px -12px rgba(12,59,54,.28);
  --sh-3:0 2px 12px rgba(12,59,54,.10);
  --wrap:1240px;
  --sec-y:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px}
a:hover{color:var(--lime-700)}
h1,h2,h3,h4{margin:0;color:var(--brand-900);letter-spacing:-.01em;line-height:1.3}
h1{font-size:40px;font-weight:700;line-height:1.25}
h2{font-size:28px;font-weight:700}
h3{font-size:20px;font-weight:600;line-height:1.4}
p{margin:0}
ul,ol{margin:0}
button{font-family:inherit}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--lime-500);outline-offset:2px;border-radius:4px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.sec{padding:var(--sec-y) 0}
.sec-tight{padding:56px 0}
.sec-head{max-width:720px;margin-bottom:36px}
.sec-head h2{position:relative;padding-left:16px}
.sec-head h2::before{content:"";position:absolute;left:0;top:8px;width:3px;height:24px;background:var(--lime-500);border-radius:2px}
.sec-head p{margin-top:14px;font-size:16px;color:var(--ink-2)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:var(--surface);
  border-bottom:1px solid var(--line);transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:var(--sh-3)}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .25s ease}
.site-header.scrolled .nav-inner{height:64px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex-shrink:0}
.brand:hover{text-decoration:none}
.brand-mark{
  width:40px;height:40px;border-radius:var(--r-md);background:var(--brand-700);color:var(--lime-500);
  display:grid;place-items:center;font-weight:800;font-size:16px;letter-spacing:.02em;flex:0 0 40px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:18px;font-weight:700;color:var(--brand-700);white-space:nowrap}
.brand-sub{font-size:12px;color:var(--ink-2);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{
  position:relative;font-size:15px;color:var(--ink);text-decoration:none;
  padding:6px 0;white-space:nowrap;transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:3px;width:60%;
  background:var(--lime-500);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--brand-700);text-decoration:none}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand-700);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.header-login{
  display:inline-flex;align-items:center;height:40px;padding:0 18px;border-radius:var(--r-sm);
  background:var(--brand-700);color:#fff;font-size:14px;font-weight:600;text-decoration:none;
  transition:background .2s ease,transform .2s ease;
}
.header-login:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px);text-decoration:none}
.header-register{
  display:inline-flex;align-items:center;height:40px;padding:0 18px;border-radius:var(--r-sm);
  border:1px solid var(--line);color:var(--brand-700);font-size:14px;font-weight:600;text-decoration:none;
  transition:border-color .2s ease,color .2s ease;
}
.header-register:hover{border-color:var(--lime-700);color:var(--lime-700);text-decoration:none}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:var(--surface);align-items:center;justify-content:center;cursor:pointer;padding:0;
  position:relative;z-index:70;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-700);position:relative;transition:background .2s ease}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-700);
  transition:transform .2s ease,top .2s ease,background .2s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
body.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}
body.nav-open .nav-toggle{background:transparent;border-color:rgba(255,255,255,.32)}
body.nav-open .nav-toggle span::before,body.nav-open .nav-toggle span::after{background:#fff}

/* ---------- banner ---------- */
.page-banner{
  position:relative;min-height:200px;display:flex;align-items:center;padding:38px 0;
  background-color:var(--brand-900);
  background-image:linear-gradient(100deg,rgba(8,32,29,.94) 0%,rgba(8,32,29,.74) 55%,rgba(8,32,29,.52) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;color:#fff;
}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:12px}
.crumbs a{color:rgba(255,255,255,.82);text-decoration:none}
.crumbs a:hover{color:var(--lime-500)}
.crumbs .cur{color:var(--lime-500)}
.banner-title{font-size:20px;font-weight:600;color:#fff;display:flex;align-items:center}
.banner-title::before{content:"";width:3px;height:18px;background:var(--lime-500);border-radius:2px;margin-right:10px;display:inline-block}
.banner-sub{margin-top:8px;font-size:14px;color:rgba(255,255,255,.74);max-width:60ch}

/* ---------- cat head ---------- */
.cat-head{padding:56px 0 0}
.cat-head-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(280px,1fr);gap:40px;align-items:start}
.lede{font-size:17px;color:var(--ink-2);margin-top:18px;max-width:58ch}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.meta-points{list-style:none;display:flex;flex-wrap:wrap;gap:12px 26px;padding:0;margin:28px 0 0}
.meta-points li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-2)}
.meta-points li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:var(--lime-500)}
.head-note{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;box-shadow:var(--sh-1)}
.head-note h3{font-size:16px;margin-bottom:16px}
.head-note ol{margin:0;padding-left:20px;display:grid;gap:12px;font-size:14px;color:var(--ink-2);line-height:1.7}
.head-note ol strong{color:var(--ink);font-weight:600}

/* ---------- buttons ---------- */
.act-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.act-btn:hover{text-decoration:none;transform:translateY(-1px)}
.act-btn-primary{background:var(--lime-500);color:#10231F;border-radius:999px}
.act-btn-primary:hover{background:var(--lime-700);color:#0B1A16;box-shadow:0 10px 24px -12px rgba(143,184,28,.8)}
.act-btn-dark{background:var(--brand-700);color:#fff}
.act-btn-dark:hover{background:var(--brand-500);color:#fff}
.act-btn-outline{border-color:var(--lime-700);color:var(--brand-700);background:transparent}
.act-btn-outline:hover{background:var(--lime-500);border-color:var(--lime-500);color:#10231F}
.act-btn-ghost{background:transparent;border-color:rgba(255,255,255,.42);color:#fff}
.act-btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.act-btn-sm{height:38px;padding:0 16px;font-size:14px}

/* ---------- filter chips ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 32px}
.chip{
  border:1px solid var(--line);background:var(--surface);color:var(--ink-2);
  padding:9px 16px;border-radius:var(--r-sm);font-size:14px;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.chip:hover{border-color:var(--lime-700);color:var(--brand-700)}
.chip.active{background:var(--brand-700);border-color:var(--brand-700);color:#fff;font-weight:600}

/* ---------- guide cards ---------- */
.guide-card{
  height:100%;display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-1);transition:transform .3s ease,box-shadow .3s ease;
}
.guide-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.card-media{position:relative;display:block;overflow:hidden;aspect-ratio:16/10;background:#E9E7DF}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.guide-card:hover .card-media img{transform:scale(1.03)}
.card-badge{
  position:absolute;left:12px;top:12px;background:var(--brand-700);color:#fff;
  font-size:12px;font-weight:600;padding:5px 10px;border-radius:var(--r-xs);letter-spacing:.01em;
}
.card-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:18px;line-height:1.45}
.card-body h3 a{color:inherit;text-decoration:none}
.card-body h3 a:hover{color:var(--brand-500)}
.card-body p{font-size:14px;color:var(--ink-2);line-height:1.72}
.card-tags{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:auto 0 0}
.card-tags li{
  font-size:12px;background:rgba(184,230,46,.18);color:var(--brand-700);
  padding:4px 10px;border-radius:var(--r-xs);
}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 20px;border-top:1px solid var(--line);background:#FBFAF7;
}
.card-hint{font-size:13px;color:var(--ink-2)}
.card-hint strong{color:var(--brand-700);font-weight:600}

/* ---------- dark quick region ---------- */
.dark-block{
  background:var(--brand-900);color:#DCEBE7;border-radius:var(--r-xl);
  padding:48px;position:relative;overflow:hidden;
}
.dark-block::after{
  content:"";position:absolute;right:-60px;bottom:-60px;width:260px;height:260px;
  border:1px solid rgba(184,230,46,.22);border-radius:50%;pointer-events:none;
}
.dark-head{max-width:640px;margin-bottom:34px;position:relative;z-index:1}
.dark-head h2{color:#fff}
.dark-head p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.7)}
.dark-grid{display:grid;grid-template-columns:repeat(4,1fr);position:relative;z-index:1}
.dark-item{padding:0 26px}
.dark-item:first-child{padding-left:0}
.dark-item + .dark-item{border-left:1px solid rgba(255,255,255,.12)}
.di-ico{display:inline-flex;color:var(--lime-500);margin-bottom:14px}
.dark-item h3{font-size:17px;color:#fff;margin-bottom:8px}
.dark-item p{font-size:14px;line-height:1.72;color:rgba(255,255,255,.68)}

/* ---------- faq ---------- */
.faq{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  background:none;border:0;text-align:left;cursor:pointer;
  padding:20px 0 20px 18px;font-size:17px;font-weight:600;color:var(--ink);
  position:relative;transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-700)}
.faq-q::before{
  content:"";position:absolute;left:0;top:24px;width:3px;height:18px;
  background:var(--lime-500);border-radius:2px;
}
.faq-ico{position:relative;width:18px;height:18px;flex:0 0 18px;margin-top:6px}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;background:var(--brand-700);border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.faq-ico::before{left:0;top:8px;width:18px;height:2px}
.faq-ico::after{left:8px;top:0;width:2px;height:18px}
.faq-item.open .faq-ico::after{transform:rotate(90deg);opacity:0}
.faq-item.open .faq-q{color:var(--brand-700)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a p{padding:0 40px 22px 18px;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--brand-900);color:#fff;
  border-radius:var(--r-xl);padding:46px 48px;display:flex;align-items:center;
  justify-content:space-between;gap:34px;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(135deg,rgba(184,230,46,.08) 0 2px,transparent 2px 12px);
}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{color:#fff;font-size:26px}
.cta-band p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.74);max-width:56ch}
.cta-band-actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0}

/* ---------- related ---------- */
.rel-card{
  display:flex;flex-direction:column;gap:10px;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;text-decoration:none;box-shadow:var(--sh-1);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--lime-700);text-decoration:none}
.rel-kicker{font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--lime-700)}
.rel-card h3{font-size:19px;color:var(--brand-900)}
.rel-card p{font-size:14px;color:var(--ink-2);line-height:1.72}
.rel-arrow{margin-top:auto;font-size:14px;font-weight:600;color:var(--brand-700);display:inline-flex;align-items:center;gap:6px}
.rel-arrow::after{content:"›";font-size:18px;line-height:1}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:#CFE0DB;margin-top:96px;padding:64px 0 0}
.foot-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
.site-footer .brand-name{color:#fff}
.site-footer .brand-sub{color:rgba(255,255,255,.6)}
.site-footer .brand-mark{background:rgba(184,230,46,.16);color:var(--lime-500)}
.foot-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);margin-top:16px;max-width:40ch}
.foot-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.foot-col ul{list-style:none;padding:0;display:grid;gap:10px}
.foot-col a{font-size:14px;color:rgba(255,255,255,.72);text-decoration:none}
.foot-col a:hover{color:var(--lime-500)}
.contact-line{font-size:14px;color:rgba(255,255,255,.72);margin-bottom:10px}
.contact-line strong{color:#fff;font-weight:600}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  border:1px solid var(--line);background:var(--surface);color:var(--brand-700);
  display:grid;place-items:center;cursor:pointer;box-shadow:var(--sh-1);
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all .25s ease;z-index:40;
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--brand-700);color:#fff;border-color:var(--brand-700)}

/* ---------- reveal ---------- */
.js .reveal{opacity:0;transform:translateY(16px)}
.js .reveal.in{opacity:1;transform:none;transition:opacity .6s ease,transform .6s ease}

/* ---------- responsive ---------- */
@media (max-width:1399.98px){
  .wrap{max-width:1140px}
}
@media (max-width:1199.98px){
  h1{font-size:34px}
  .nav-links{gap:20px}
  .dark-grid{grid-template-columns:repeat(2,1fr);gap:0}
  .dark-item{padding:22px 24px}
  .dark-item:first-child{padding-left:24px}
  .dark-item:nth-child(odd){padding-left:0;border-left:0}
  .dark-item:nth-child(n+3){border-top:1px solid rgba(255,255,255,.12)}
}
@media (max-width:991.98px){
  :root{--sec-y:72px}
  h1{font-size:30px}
  h2{font-size:24px}
  .nav-links{
    position:fixed;top:72px;right:0;height:calc(100vh - 72px);width:min(320px,86vw);
    background:var(--brand-900);flex-direction:column;align-items:stretch;gap:0;
    margin-left:0;padding:20px 20px 28px;transform:translateX(105%);
    transition:transform .3s ease;z-index:45;overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0)}
  .nav-link{
    color:#E8F2EF;font-size:16px;height:52px;display:flex;align-items:center;
    border-bottom:1px solid rgba(255,255,255,.12);padding:0;
  }
  .nav-link::after{display:none}
  .nav-link.active{color:var(--lime-500);font-weight:600}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .nav-actions .header-login,.nav-actions .header-register{display:none}
  .nav-inner{gap:16px}
  .cat-head-grid{grid-template-columns:1fr;gap:28px}
  .dark-block{padding:32px 24px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 28px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .site-footer{margin-top:72px}
}
@media (max-width:767.98px){
  :root{--sec-y:56px}
  .wrap{padding:0 16px}
  .page-banner{min-height:160px;padding:28px 0}
  .cat-head{padding:40px 0 0}
  .dark-grid{grid-template-columns:1fr}
  .dark-item{padding:20px 0;border-left:0!important}
  .dark-item + .dark-item{border-top:1px solid rgba(255,255,255,.12)}
  .dark-item:nth-child(n+3){border-top:1px solid rgba(255,255,255,.12)}
  .faq-a p{padding-right:20px}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column}
}
@media (max-width:575.98px){
  h1{font-size:26px}
  h2{font-size:22px}
  .lede{font-size:16px}
  .cta-row .act-btn{width:100%}
  .cta-band-actions{width:100%;flex-direction:column}
  .cta-band-actions .act-btn{width:100%}
  .card-body{padding:18px}
  .card-foot{flex-direction:column;align-items:flex-start}
  .card-foot .act-btn{width:100%}
  .chip{font-size:13px;padding:8px 14px}
  .to-top{right:16px;bottom:16px}
}

/* roulang page: category4 */
:root{
  --brand-900:#08201D;
  --brand-700:#0C3B36;
  --brand-500:#17564E;
  --lime-500:#B8E62E;
  --lime-700:#8FB81C;
  --orange-500:#FF6B35;
  --paper:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E3E1D8;
  --ink:#16211F;
  --ink-2:#5A6B66;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --r-xs:6px;
  --sh-1:0 1px 2px rgba(12,59,54,.06);
  --sh-2:0 10px 28px -12px rgba(12,59,54,.28);
  --sh-nav:0 2px 12px rgba(12,59,54,.10);
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-700);text-decoration:none;text-underline-offset:3px}
a:hover{color:var(--lime-700);text-decoration:underline}
h1,h2,h3,h4,h5{margin:0;letter-spacing:-.01em;font-weight:700;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer}
input,select,textarea{font:inherit}
:focus-visible{outline:2px solid var(--lime-500);outline-offset:2px}
::selection{background:var(--lime-500);color:var(--brand-900)}

.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--paper);
  border-bottom:1px solid transparent;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-stuck{background:#fff;box-shadow:var(--sh-nav);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .25s ease}
.site-header.is-stuck .nav-inner{height:64px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{
  width:42px;height:42px;border-radius:12px;flex-shrink:0;
  background:var(--brand-700);color:var(--lime-500);
  display:grid;place-items:center;font-size:16px;font-weight:700;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:19px;font-weight:700;color:var(--brand-700);white-space:nowrap}
.brand-sub{font-size:12px;color:var(--ink-2);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-link{position:relative;font-size:15px;color:var(--ink);padding:8px 0;white-space:nowrap}
.nav-link::after{
  content:'';position:absolute;left:0;bottom:2px;height:3px;width:60%;
  background:var(--lime-500);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--brand-700);text-decoration:none}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand-700);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:14px}
.header-login{
  display:inline-flex;align-items:center;height:40px;padding:0 18px;
  background:var(--brand-700);color:#fff;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;transition:background .22s ease,transform .22s ease;
}
.header-login:hover{background:var(--brand-500);color:#fff;text-decoration:none;transform:translateY(-1px)}
.header-register{
  display:inline-flex;align-items:center;height:40px;padding:0 16px;
  border:1px solid var(--line);color:var(--brand-700);border-radius:var(--r-sm);
  font-size:15px;font-weight:600;background:#fff;transition:border-color .22s ease,color .22s ease;
}
.header-register:hover{border-color:var(--lime-700);color:var(--brand-700);text-decoration:none}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:var(--r-sm);position:relative;padding:0;
}
.nav-toggle span{position:absolute;left:12px;right:12px;top:21px;height:2px;background:var(--brand-700);border-radius:2px;transition:.25s}
.nav-toggle span::before,.nav-toggle span::after{content:'';position:absolute;left:0;right:0;height:2px;background:var(--brand-700);border-radius:2px;transition:.25s}
.nav-toggle span::before{top:-7px}
.nav-toggle span::after{top:7px}
.nav-toggle.is-on span{background:transparent}
.nav-toggle.is-on span::before{top:0;transform:rotate(45deg)}
.nav-toggle.is-on span::after{top:0;transform:rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-sm);border:1px solid transparent;font-size:15px;font-weight:600;transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;text-decoration:none}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-lime{background:var(--lime-500);color:#0B1A16}
.btn-lime:hover{background:var(--lime-700);color:#0B1A16}
.btn-brand{background:var(--brand-700);color:#fff}
.btn-brand:hover{background:var(--brand-500);color:#fff}
.btn-line{border-color:var(--lime-700);color:var(--brand-700);background:transparent}
.btn-line:hover{background:rgba(184,230,46,.18);color:var(--brand-700)}
.btn-line-light{border-color:rgba(255,255,255,.55);color:#fff;background:transparent}
.btn-line-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn-pill{border-radius:999px}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

/* ---------- banner ---------- */
.page-banner{position:relative;min-height:200px;display:flex;align-items:center;overflow:hidden;background:var(--brand-900)}
.page-banner img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55}
.page-banner::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(8,32,29,.94) 6%,rgba(12,59,54,.72) 58%,rgba(12,59,54,.42) 100%);
}
.banner-inner{position:relative;z-index:2;padding:36px 0;color:#fff}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;color:var(--lime-500);letter-spacing:.04em}
.eyebrow::before{content:'';width:22px;height:2px;background:var(--lime-500);display:block}
.banner-inner h1{font-size:34px;line-height:1.28;color:#fff;margin-top:12px;max-width:840px}

/* ---------- intro ---------- */
.intro{padding:44px 0 0}
.intro-lead{max-width:860px;font-size:17px;line-height:1.9;color:var(--ink-2)}
.intro-actions{margin-top:26px;display:flex;gap:14px;flex-wrap:wrap}
.intro-tags{margin-top:30px;display:flex;gap:12px;flex-wrap:wrap}
.tag{display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 14px;border-radius:var(--r-xs);background:rgba(184,230,46,.18);color:var(--brand-700);font-size:14px;font-weight:600}
.tag::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--brand-700)}

/* ---------- section base ---------- */
.section{padding:var(--sec) 0}
.section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:840px;margin-bottom:40px}
.section-head h2{font-size:28px;position:relative;padding-left:16px}
.section-head h2::before{content:'';position:absolute;left:0;top:6px;bottom:6px;width:3px;background:var(--lime-500);border-radius:2px}
.section-head .lead{margin-top:14px;font-size:16px;color:var(--ink-2);line-height:1.85}

/* ---------- timeline ---------- */
.timeline{position:relative}
.timeline::before{
  content:'';position:absolute;left:25px;top:14px;bottom:14px;width:2px;background:var(--line);
}
.tl-item{position:relative;padding-left:72px;padding-bottom:40px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:19px;top:12px;width:14px;height:14px;border-radius:50%;
  background:var(--lime-500);border:2px solid var(--brand-700);z-index:2;
}
.tl-body{display:grid;grid-template-columns:230px 1fr;gap:28px;align-items:start}
.tl-media img{width:100%;height:158px;object-fit:cover;border-radius:var(--r-md);border:1px solid var(--line)}
.tl-text{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:24px;box-shadow:var(--sh-1);transition:box-shadow .25s ease,transform .25s ease}
.tl-text:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.tl-step{display:inline-block;font-size:13px;font-weight:700;color:var(--brand-500);letter-spacing:.06em;margin-bottom:8px}
.tl-text h3{font-size:20px;line-height:1.4}
.tl-text p{margin-top:10px;font-size:15px;color:var(--ink-2);line-height:1.85}
.ticks{margin-top:14px;display:grid;gap:8px}
.ticks li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-2);line-height:1.7}
.ticks li::before{content:'';position:absolute;left:0;top:9px;width:7px;height:7px;background:var(--brand-700);border-radius:2px}

/* ---------- cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:box-shadow .25s ease,transform .25s ease;
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-4px)}
.card-icon{
  width:44px;height:44px;border-radius:12px;border:1.5px solid var(--lime-700);
  display:grid;place-items:center;color:var(--brand-700);font-weight:700;font-size:15px;margin-bottom:16px;
}
.card h3{font-size:19px}
.card p{margin-top:10px;font-size:15px;color:var(--ink-2);line-height:1.85}
.card .card-foot{margin-top:auto;padding-top:18px;font-size:14px;font-weight:600;color:var(--brand-700)}
.marker{color:var(--orange-500)}

/* ---------- checklist band ---------- */
.band{background:var(--brand-900);color:#fff}
.band .wrap{padding-top:72px;padding-bottom:72px}
.band-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.band h2{font-size:28px;color:#fff;position:relative;padding-left:16px}
.band h2::before{content:'';position:absolute;left:0;top:6px;bottom:6px;width:3px;background:var(--lime-500);border-radius:2px}
.band .band-lead{margin-top:16px;color:rgba(255,255,255,.72);font-size:16px;line-height:1.9}
.band-list{margin-top:26px;display:grid;gap:14px}
.band-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.86)}
.band-list li::before{content:'';width:8px;height:8px;border-radius:2px;background:var(--lime-500);margin-top:9px;flex-shrink:0}
.band-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid rgba(255,255,255,.14)}
.band-media img{width:100%;height:340px;object-fit:cover}
.band-media .float{
  position:absolute;left:20px;bottom:20px;right:20px;background:rgba(8,32,29,.86);
  border:1px solid rgba(184,230,46,.4);border-radius:var(--r-md);padding:18px 20px;
}
.band-media .float strong{display:block;color:var(--lime-500);font-size:15px}
.band-media .float span{display:block;margin-top:6px;font-size:14px;color:rgba(255,255,255,.78);line-height:1.75}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;text-align:left;padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  font-size:17px;font-weight:600;color:var(--ink);transition:color .2s ease;
}
.faq-q span{position:relative;padding-left:16px}
.faq-q span::before{content:'';position:absolute;left:0;top:4px;bottom:4px;width:3px;background:var(--lime-500);border-radius:2px}
.faq-q:hover{color:var(--brand-700)}
.faq-item.open .faq-q{color:var(--brand-700)}
.faq-icon{position:relative;width:18px;height:18px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{content:'';position:absolute;background:var(--brand-700);border-radius:2px;transition:transform .25s ease}
.faq-icon::before{left:0;right:0;top:8px;height:2px}
.faq-icon::after{top:0;bottom:0;left:8px;width:2px}
.faq-item.open .faq-icon::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a p{padding:0 0 22px 16px;font-size:15px;color:var(--ink-2);line-height:1.9}

/* ---------- cta ---------- */
.cta-band{
  position:relative;background:var(--brand-900);color:#fff;overflow:hidden;
  border-radius:var(--r-lg);
}
.cta-band::after{
  content:'';position:absolute;right:0;top:0;bottom:0;width:42%;
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.08) 0 1px,transparent 1px 12px);
  opacity:.9;pointer-events:none;
}
.cta-inner{position:relative;z-index:2;padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:26px;color:#fff}
.cta-inner p{margin-top:10px;color:rgba(255,255,255,.74);font-size:15px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-1);transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.related-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);border-color:var(--lime-700);text-decoration:none}
.related-card h3{font-size:18px;color:var(--ink)}
.related-card:hover h3{color:var(--brand-700)}
.related-card p{margin-top:10px;font-size:14px;color:var(--ink-2);line-height:1.8}
.related-card .go{margin-top:16px;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-700)}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.78);padding:64px 0 0;margin-top:var(--sec)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.foot-brand .brand-name{color:#fff}
.foot-brand .brand-sub{color:rgba(255,255,255,.55)}
.foot-brand .brand-mark{background:var(--lime-500);color:var(--brand-900)}
.foot-brand p{margin-top:18px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62)}
.foot-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.foot-col ul li{margin-bottom:10px}
.foot-col a{font-size:14px;color:rgba(255,255,255,.68)}
.foot-col a:hover{color:var(--lime-500);text-decoration:none}
.contact-line{font-size:14px;color:rgba(255,255,255,.62);margin-bottom:10px;line-height:1.7}
.contact-line strong{color:#fff;font-weight:600}
.foot-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  background:var(--brand-700);color:var(--lime-500);border:1px solid rgba(184,230,46,.4);
  display:grid;place-items:center;opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s;z-index:1040;font-size:18px;
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--brand-500)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  :root{--sec:80px}
  .band-grid{grid-template-columns:1fr;gap:36px}
  .related-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991px){
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:290px;background:var(--brand-900);
    flex-direction:column;align-items:stretch;gap:0;padding:88px 24px 32px;
    transform:translateX(102%);transition:transform .3s ease;z-index:1050;overflow-y:auto;
    box-shadow:-12px 0 40px rgba(8,32,29,.28);
  }
  .nav-links.is-open{transform:none}
  .nav-link{
    color:rgba(255,255,255,.86);font-size:16px;padding:16px 0;
    border-bottom:1px solid rgba(255,255,255,.12);
  }
  .nav-link:hover,.nav-link.active{color:var(--lime-500)}
  .nav-link::after{display:none}
  .nav-toggle{display:block;z-index:1060}
  .header-register{display:none}
  .tl-body{grid-template-columns:200px 1fr;gap:20px}
}
@media (max-width:767px){
  :root{--sec:64px}
  .wrap{padding:0 16px}
  .banner-inner h1{font-size:26px}
  .section-head h2,.band h2,.cta-inner h2{font-size:23px}
  .grid-3,.grid-2,.related-grid{grid-template-columns:1fr}
  .tl-item{padding-left:0;padding-bottom:34px}
  .timeline::before{left:13px}
  .tl-dot{left:7px;top:16px}
  .tl-body{grid-template-columns:1fr;gap:16px;padding-left:40px}
  .tl-media img{height:190px}
  .cta-inner{padding:32px 24px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .band-media img{height:240px}
  .intro-lead{font-size:16px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .foot-brand{grid-column:1 / -1}
  .nav-actions{margin-left:auto}
  .header-login{height:38px;padding:0 14px;font-size:14px}
}
@media (max-width:575px){
  .banner-inner h1{font-size:23px}
  .btn{width:100%}
  .intro-actions .btn,.cta-actions .btn{width:100%}
  .foot-grid{grid-template-columns:1fr}
  .band .wrap{padding-top:56px;padding-bottom:56px}
  .brand-name{font-size:17px}
  .brand-sub{font-size:11px}
  .foot-bottom{flex-direction:column;gap:8px}
}