/* roulang page: index */
:root{
  --navy:#1B3B6F;
  --navy-dark:#142C55;
  --navy-light:#E8EEF8;
  --orange:#F08A24;
  --orange-dark:#D4761A;
  --teal:#1E9E92;
  --bg:#F5F7FA;
  --alt:#EEF2F8;
  --card:#FFFFFF;
  --footer:#101A2B;
  --title:#101A2B;
  --text:#4B5A70;
  --muted:#8695A8;
  --border:#DFE6EF;
  --r-card:16px;
  --r-btn:10px;
  --r-img:20px;
  --sh-1:0 1px 2px rgba(16,26,43,.05);
  --sh-2:0 10px 24px rgba(16,26,43,.08);
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
h1,h2,h3,h4{color:var(--title);line-height:1.35;}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px;}
.num{font-family:Inter,"Helvetica Neue",Arial,sans-serif;}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px;width:100%;}
.section{padding:88px 0;}
.section-alt{background:var(--alt);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:30px;font-weight:700;position:relative;padding-left:16px;}
.section-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--orange);}
.section-head p{margin-top:14px;color:var(--text);font-size:16px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--navy);background:var(--navy-light);border-radius:999px;padding:5px 14px;margin-bottom:18px;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--orange);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--orange-dark);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-navy{background:var(--navy);color:#fff;box-shadow:var(--sh-1);}
.btn-navy:hover{background:var(--navy-dark);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-outline{border-color:var(--navy);color:var(--navy);background:transparent;}
.btn-outline:hover{background:var(--navy-light);transform:translateY(-1px);}
.btn-ghost{color:var(--navy);height:auto;padding:0;font-weight:600;gap:6px;background:none;}
.btn-ghost:hover{color:var(--orange-dark);}
.btn:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-ghost svg,.arrow svg{transition:transform .18s ease-out;}
.btn-ghost:hover svg,.arrow:hover svg{transform:translateX(3px);}

/* ---------- 顶部服务条 ---------- */
.topbar{background:var(--navy-dark);color:rgba(255,255,255,.72);font-size:14px;}
.topbar-inner{height:32px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.topbar-note{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-links{display:flex;gap:20px;flex-shrink:0;}
.topbar-links a{transition:color .18s ease-out;}
.topbar-links a:hover{color:var(--orange);}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--border);transition:box-shadow .2s ease-out;}
.site-header.is-scrolled{box-shadow:0 4px 16px rgba(16,26,43,.06);}
.header-inner{height:76px;display:flex;align-items:center;gap:28px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--navy);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.brand-text{font-size:17px;font-weight:700;color:var(--title);letter-spacing:.2px;white-space:nowrap;}
.search{flex:1;max-width:560px;position:relative;display:flex;align-items:center;background:var(--bg);border:1px solid var(--border);border-radius:999px;height:48px;padding:0 6px 0 16px;transition:border-color .18s ease-out,box-shadow .18s ease-out;}
.search:focus-within{border-color:var(--navy);box-shadow:0 0 0 2px rgba(240,138,36,.35);}
.search svg{flex-shrink:0;color:var(--muted);}
.search input{flex:1;border:none;background:transparent;outline:none;height:100%;padding:0 12px;font-size:15px;color:var(--title);}
.search input::placeholder{color:var(--muted);}
.search-btn{height:36px;padding:0 18px;border-radius:999px;background:var(--navy);color:#fff;font-size:14px;font-weight:600;transition:background-color .18s ease-out;}
.search-btn:hover{background:var(--navy-dark);}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;margin-left:auto;}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--border);align-items:center;justify-content:center;flex-direction:column;gap:4px;}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--navy);transition:transform .18s ease-out,opacity .18s ease-out;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 分类 chips ---------- */
.chips-bar{border-top:1px solid var(--border);background:#fff;}
.chips-inner{display:flex;gap:10px;overflow-x:auto;padding:10px 24px;scrollbar-width:none;}
.chips-inner::-webkit-scrollbar{display:none;}
.chip{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 16px;border-radius:999px;border:1px solid var(--border);background:#fff;color:var(--text);font-size:14px;white-space:nowrap;transition:all .18s ease-out;}
.chip:hover{border-color:var(--navy);color:var(--navy);background:var(--navy-light);}
.chip.is-active{background:var(--navy);border-color:var(--navy);color:#fff;font-weight:600;}
.chip.is-active:hover{background:var(--navy-dark);color:#fff;}

/* ---------- 移动抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:80;background:#fff;transform:translateX(100%);transition:transform .22s ease-out;display:flex;flex-direction:column;padding:20px;}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--navy);}
.drawer-search{display:flex;align-items:center;background:var(--bg);border:1px solid var(--border);border-radius:999px;height:44px;padding:0 6px 0 14px;margin-bottom:20px;}
.drawer-search input{flex:1;border:none;background:transparent;outline:none;height:100%;padding:0 10px;font-size:15px;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{padding:14px 8px;border-radius:10px;font-size:16px;font-weight:600;color:var(--title);border-bottom:1px solid var(--border);}
.drawer-nav a:hover{background:var(--navy-light);color:var(--navy);}
.drawer-cta{margin-top:auto;padding-top:24px;}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);padding:72px 0 88px;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero h1{font-size:clamp(32px,4.4vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.5px;}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.85;color:var(--text);max-width:600px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-points{display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;padding-top:26px;border-top:1px solid var(--border);}
.hero-point{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--text);}
.hero-point svg{color:var(--teal);flex-shrink:0;}
.hero-media{position:relative;}
.hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-2);}
.hero-media::after{content:"";position:absolute;inset:0;border-radius:var(--r-img);background:linear-gradient(140deg,rgba(27,59,111,.24),rgba(27,59,111,.04));pointer-events:none;}
.hero-stat{position:absolute;right:-18px;bottom:-24px;background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--sh-2);padding:16px 20px;min-width:200px;}
.hero-stat strong{display:block;font-size:26px;font-weight:700;color:var(--navy);line-height:1.2;}
.hero-stat span{display:block;font-size:13px;color:var(--muted);margin-top:4px;line-height:1.6;}

/* ---------- 痛点 ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.pain-item{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:26px 28px 24px;border-left:3px solid var(--orange);transition:box-shadow .18s ease-out,border-color .18s ease-out,transform .18s ease-out;}
.pain-item:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.pain-item h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.pain-item p{font-size:15px;color:var(--text);}
.pain-item .arrow{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:600;color:var(--navy);}
.pain-item .arrow:hover{color:var(--orange-dark);}

/* ---------- 方案卡片 ---------- */
.solution-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.sol-main{grid-column:span 8;display:grid;grid-template-columns:1fr 1fr;gap:0;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:box-shadow .18s ease-out,border-color .18s ease-out;}
.sol-main:hover{box-shadow:var(--sh-2);border-color:rgba(27,59,111,.2);}
.sol-main-body{padding:36px 32px;}
.sol-main-body h3{font-size:22px;font-weight:700;margin-bottom:14px;}
.sol-main-body p{font-size:15px;margin-bottom:18px;}
.sol-list li{display:flex;gap:10px;font-size:15px;padding:7px 0;color:var(--text);}
.sol-list svg{flex-shrink:0;margin-top:6px;color:var(--teal);}
.sol-main-media{position:relative;min-height:280px;}
.sol-main-media img{width:100%;height:100%;object-fit:cover;}
.sol-side{grid-column:span 4;display:flex;flex-direction:column;gap:24px;}
.sol-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);transition:box-shadow .18s ease-out,border-color .18s ease-out,transform .18s ease-out;flex:1;}
.sol-card:hover{box-shadow:var(--sh-2);border-color:rgba(27,59,111,.2);transform:translateY(-2px);}
.sol-num{width:28px;height:28px;border-radius:8px;background:var(--navy-light);color:var(--navy);font-weight:700;font-size:14px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;}
.sol-card h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.sol-card p{font-size:15px;}
.sol-card .arrow{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:600;color:var(--navy);}
.sol-card .arrow:hover{color:var(--orange-dark);}

/* ---------- 数据区 ---------- */
.stats{background:var(--navy);padding:64px 0;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:0 28px;border-left:1px solid rgba(255,255,255,.16);}
.stat:first-child{border-left:none;padding-left:0;}
.stat strong{display:block;font-family:Inter,Arial,sans-serif;font-size:44px;font-weight:700;line-height:1.1;color:var(--orange);}
.stat span{display:block;margin-top:10px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.72);}
.stats-note{margin-top:32px;font-size:13px;color:rgba(255,255,255,.56);}

/* ---------- 资讯列表 ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px;}
.news-grid{display:grid;grid-template-columns:8fr 4fr;gap:24px;}
.news-main{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:box-shadow .18s ease-out,border-color .18s ease-out;}
.news-main:hover{box-shadow:var(--sh-2);border-color:rgba(27,59,111,.2);}
.news-main img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.news-main-body{padding:28px 30px 26px;}
.news-main-body h3{font-size:22px;font-weight:700;margin:14px 0 12px;}
.news-main-body h3 a:hover{color:var(--navy);}
.news-main-body p{font-size:15px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-side{display:flex;flex-direction:column;gap:24px;}
.news-item{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:box-shadow .18s ease-out,border-color .18s ease-out,transform .18s ease-out;flex:1;}
.news-item:hover{box-shadow:var(--sh-2);border-color:rgba(27,59,111,.2);transform:translateY(-2px);}
.news-item h3{font-size:17px;font-weight:600;margin:12px 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-item h3 a:hover{color:var(--navy);}
.news-item p{font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--text);}
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:13px;font-weight:600;color:var(--teal);background:rgba(30,158,146,.08);border:1px solid rgba(30,158,146,.4);}
.news-meta{display:flex;align-items:center;gap:14px;margin-top:18px;padding-top:16px;border-top:1px solid var(--border);font-size:13px;color:var(--muted);}
.news-meta .read{margin-left:auto;font-weight:600;color:var(--navy);font-size:13px;}
.news-meta .read:hover{color:var(--orange-dark);}
.empty{background:#fff;border:1px dashed var(--border);border-radius:var(--r-card);min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--muted);text-align:center;padding:32px;}
.empty svg{color:var(--muted);}
.empty a{color:var(--navy);font-weight:600;}
.empty a:hover{color:var(--orange-dark);}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;}
.steps::before{content:"";position:absolute;top:19px;left:8%;right:8%;height:1px;background:var(--border);}
.step{position:relative;padding-top:0;text-align:center;}
.step-dot{width:38px;height:38px;border-radius:50%;background:#fff;border:2px solid var(--navy);color:var(--navy);font-weight:700;font-size:15px;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;position:relative;z-index:1;}
.step h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.step p{font-size:15px;}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:12px;transition:box-shadow .18s ease-out,border-color .18s ease-out;}
.faq-item[open]{border-color:rgba(27,59,111,.28);box-shadow:var(--sh-1);}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 22px;font-size:17px;font-weight:600;color:var(--title);display:flex;align-items:center;gap:14px;position:relative;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"";width:14px;height:14px;margin-left:auto;flex-shrink:0;background:
  linear-gradient(var(--navy),var(--navy)) center/100% 2px no-repeat,
  linear-gradient(var(--navy),var(--navy)) center/2px 100% no-repeat;
  transition:transform .2s ease-out;}
.faq-item[open] summary::after{transform:rotate(45deg);background:
  linear-gradient(var(--orange),var(--orange)) center/100% 2px no-repeat,
  linear-gradient(var(--orange),var(--orange)) center/2px 100% no-repeat;}
.faq-item[open] summary::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:2px;background:var(--orange);}
.faq-item[open] summary{padding-left:26px;}
.faq-body{padding:0 22px 20px 22px;font-size:15px;color:var(--text);}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--navy-light);border-radius:var(--r-img);padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:28px;}
.cta-band h2{font-size:26px;font-weight:700;}
.cta-band p{margin-top:10px;font-size:15px;max-width:640px;}

/* ---------- 弹层 ---------- */
.modal{position:fixed;inset:0;z-index:90;background:rgba(27,59,111,.4);display:none;align-items:center;justify-content:center;padding:20px;}
.modal.is-open{display:flex;}
.modal-card{background:#fff;border-radius:20px;width:100%;max-width:520px;max-height:90vh;overflow-y:auto;padding:32px;position:relative;box-shadow:0 24px 60px rgba(16,26,43,.24);}
.modal-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:10px;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--muted);transition:all .18s ease-out;}
.modal-close:hover{color:var(--navy);border-color:var(--navy);background:var(--navy-light);}
.modal-card h3{font-size:22px;font-weight:700;margin-bottom:8px;}
.modal-card > p{font-size:15px;margin-bottom:24px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--title);margin-bottom:8px;}
.field input,.field select,.field textarea{width:100%;background:#fff;border:1px solid var(--border);border-radius:var(--r-btn);padding:11px 14px;font-size:15px;outline:none;transition:border-color .18s ease-out,box-shadow .18s ease-out;}
.field textarea{min-height:92px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--muted);}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--navy);box-shadow:0 0 0 2px rgba(240,138,36,.35);}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:#D64545;}
.field .err{display:none;font-size:12px;color:#D64545;margin-top:6px;}
.field.has-error .err{display:block;}
.modal-submit{width:100%;margin-top:8px;}
.privacy-note{font-size:12px;color:var(--muted);line-height:1.8;margin-top:14px;}
.privacy-note a{color:var(--navy);text-decoration:underline;}
.form-success{display:none;flex-direction:column;align-items:center;text-align:center;gap:14px;padding:24px 0;}
.form-success.is-visible{display:flex;}
.form-success svg{color:var(--teal);}
.form-success strong{font-size:19px;color:var(--title);}
.form-success p{font-size:15px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);color:rgba(255,255,255,.7);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:5fr 3fr 3fr 3fr;gap:44px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);}
.footer-brand span{font-size:17px;font-weight:700;color:#fff;}
.site-footer p{font-size:14px;line-height:1.85;}
.site-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;transition:color .18s ease-out;}
.footer-links a:hover{color:var(--orange);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5);}
.footer-bottom a{transition:color .18s ease-out;}
.footer-bottom a:hover{color:var(--orange);}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .wrap{max-width:1240px;}
}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-media{max-width:640px;}
  .hero-stat{right:16px;bottom:-20px;}
  .sol-main{grid-column:span 12;grid-template-columns:1fr;}
  .sol-main-media{min-height:240px;}
  .sol-side{grid-column:span 12;flex-direction:row;}
  .news-grid{grid-template-columns:1fr;}
  .news-side{flex-direction:row;}
  .faq-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .section{padding:72px 0;}
}
@media (max-width:768px){
  .header-inner{height:auto;padding:12px 0;display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;}
  .brand{grid-column:1;}
  .header-actions{grid-column:2;margin-left:0;}
  .search{grid-column:1 / -1;max-width:none;height:44px;order:3;}
  .nav-toggle{display:flex;}
  .header-actions .btn{display:none;}
  .chips-inner{padding:10px 16px;}
  .hero{padding:48px 0 64px;}
  .hero-points{gap:16px;}
  .hero-stat{position:static;margin-top:20px;right:auto;bottom:auto;}
  .pain-grid{grid-template-columns:1fr;}
  .sol-side{flex-direction:column;}
  .stats-grid{grid-template-columns:1fr 1fr;gap:28px 0;}
  .stat{padding-left:20px;}
  .stat:nth-child(odd){border-left:none;padding-left:0;}
  .stats{padding:48px 0;}
  .news-side{flex-direction:column;}
  .steps{grid-template-columns:1fr;gap:28px;}
  .steps::before{display:none;}
  .step{display:grid;grid-template-columns:38px 1fr;gap:16px;text-align:left;}
  .step-dot{margin:0;}
  .step h3{margin-bottom:4px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:24px;}
  .topbar-note{display:none;}
  .topbar-inner{justify-content:flex-end;}
}
@media (max-width:560px){
  .wrap{padding:0 16px;}
  .hero h1{font-size:30px;}
  .stats-grid{grid-template-columns:1fr;}
  .stat{border-left:none;padding-left:0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .modal-card{padding:24px 20px;}
  .news-main-body{padding:22px 20px;}
  .sol-main-body{padding:26px 22px;}
  .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .header-actions .btn-sm{width:auto;}
  .footer-bottom{font-size:12px;}
}

/* roulang page: category1 */
:root{
  --ink:#101A2B;
  --ink-2:#4B5A70;
  --ink-3:#8695A8;
  --line:#DFE6EF;
  --bg:#F5F7FA;
  --bg-alt:#EEF2F8;
  --card:#FFFFFF;
  --indigo:#1B3B6F;
  --indigo-dark:#142C55;
  --indigo-soft:#E8EEF8;
  --orange:#F08A24;
  --orange-dark:#D4761A;
  --teal:#1E9E92;
  --footer:#101A2B;
  --r-card:16px;
  --r-btn:10px;
  --r-img:20px;
  --sh-1:0 1px 2px rgba(16,26,43,.05);
  --sh-2:0 10px 24px rgba(16,26,43,.08);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Segoe UI",Inter,Helvetica,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;background:var(--bg);color:var(--ink-2);font-family:var(--font);
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.3;font-weight:700;}
h1{font-size:clamp(32px,4.4vw,46px);letter-spacing:.2px;}
h2{font-size:clamp(24px,2.6vw,30px);}
h3{font-size:21px;font-weight:600;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:6px;}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1280px){.wrap{max-width:1240px;}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out;}
.site-header.is-stuck{box-shadow:0 4px 16px rgba(16,26,43,.06);}
.header-inner{display:flex;align-items:center;gap:24px;height:76px;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--indigo);display:grid;place-items:center;flex:0 0 auto;}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.2px;white-space:nowrap;}
.search{flex:1 1 auto;max-width:560px;display:flex;align-items:center;gap:10px;height:48px;padding:0 6px 0 18px;background:var(--bg);border:1px solid var(--line);border-radius:999px;color:var(--ink-3);transition:border-color .18s ease-out,box-shadow .18s ease-out,background .18s ease-out;}
.search:focus-within{background:#fff;border-color:var(--indigo);box-shadow:0 0 0 2px rgba(240,138,36,.35);}
.search input{flex:1 1 auto;height:100%;min-width:0;border:0;background:transparent;outline:none;font-size:15px;color:var(--ink);}
.search input::placeholder{color:var(--ink-3);}
.search-btn{flex:0 0 auto;height:36px;padding:0 18px;border:0;border-radius:999px;background:var(--indigo);color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:background .18s ease-out;}
.search-btn:hover{background:var(--indigo-dark);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.chips-bar{background:#fff;border-top:1px solid var(--line);}
.chips-inner{display:flex;gap:10px;overflow-x:auto;padding:10px 24px;scrollbar-width:none;-ms-overflow-style:none;}
.chips-inner::-webkit-scrollbar{display:none;}
.chip{flex:0 0 auto;display:inline-flex;align-items:center;height:36px;padding:0 16px;border:1px solid var(--line);border-radius:999px;font-size:14px;color:var(--ink-2);text-decoration:none;background:#fff;transition:border-color .18s ease-out,color .18s ease-out,background .18s ease-out;}
.chip:hover{border-color:var(--indigo);color:var(--indigo);}
.chip.is-active{background:var(--indigo);border-color:var(--indigo);color:#fff;}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;}
.btn-primary{background:var(--indigo);color:#fff;}
.btn-primary:hover{background:var(--indigo-dark);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent{background:var(--orange);color:#fff;}
.btn-accent:hover{background:var(--orange-dark);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-outline{border-color:var(--indigo);color:var(--indigo);background:transparent;}
.btn-outline:hover{background:var(--indigo-soft);transform:translateY(-1px);}
.btn-ghost{height:auto;padding:0;color:var(--indigo);border:0;background:none;}
.btn-ghost:hover{color:var(--orange);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- badges & misc ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;border:1px solid rgba(30,158,146,.45);background:rgba(30,158,146,.08);color:#147A70;font-size:13px;font-weight:600;}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--ink-3);margin-bottom:20px;}
.breadcrumb a{text-decoration:none;color:var(--ink-3);}
.breadcrumb a:hover{color:var(--indigo);}
.breadcrumb span.sep{color:var(--line);}
.breadcrumb span.current{color:var(--ink-2);}
.section{padding:88px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:16px;}
.eyebrow{display:inline-block;position:relative;padding-left:14px;margin-bottom:14px;font-size:14px;font-weight:600;color:var(--indigo);}
.eyebrow::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;background:var(--orange);}

/* ---------- page hero ---------- */
.page-hero{background:linear-gradient(180deg,#FFFFFF 0%,var(--bg-alt) 100%);border-bottom:1px solid var(--line);padding:44px 0 56px;}
.page-hero h1{max-width:880px;margin-bottom:18px;}
.page-hero .lead{max-width:820px;font-size:17px;color:var(--ink-2);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.anchor-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;}
.anchor-chips a{display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:999px;background:#fff;border:1px solid var(--line);box-shadow:var(--sh-1);font-size:14px;color:var(--ink-2);text-decoration:none;transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out;}
.anchor-chips a:hover{border-color:var(--indigo);color:var(--indigo);transform:translateY(-1px);}

/* ---------- split block ---------- */
.split{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.split-text h2{margin-bottom:18px;}
.split-text p{margin-bottom:16px;}
.split-media{position:relative;}
.split-media img{width:100%;height:100%;min-height:320px;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-1);}
.media-note{position:absolute;right:18px;bottom:-22px;width:220px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;box-shadow:var(--sh-2);}
.media-note strong{display:block;font-size:13px;color:var(--ink-3);font-weight:600;margin-bottom:4px;}
.media-note span{font-size:14px;color:var(--ink);font-weight:600;}
.tick-list{margin-top:22px;display:grid;gap:12px;}
.tick-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink-2);}
.tick-list svg{flex:0 0 auto;margin-top:5px;color:var(--teal);}

/* ---------- definition grid ---------- */
.def-grid{margin-top:56px;border-top:1px solid var(--line);}
.def-row{display:grid;grid-template-columns:200px 1fr;gap:24px;padding:22px 4px;border-bottom:1px solid var(--line);transition:background .18s ease-out;}
.def-row:hover{background:#fff;}
.def-row dt{font-size:15px;font-weight:700;color:var(--indigo);}
.def-row dd{margin:0;font-size:15.5px;color:var(--ink-2);}
.def-row dd em{font-style:normal;color:var(--ink);font-weight:600;}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:8px;position:relative;}
.step{position:relative;padding:0 26px 0 0;}
.step::before{content:"";position:absolute;left:0;top:17px;width:100%;height:1px;background:var(--line);}
.step:last-child::before{width:0;}
.step-dot{position:relative;width:34px;height:34px;border-radius:50%;background:#fff;border:1px solid var(--line);display:grid;place-items:center;font-size:14px;font-weight:700;color:var(--indigo);box-shadow:var(--sh-1);}
.step h3{margin:18px 0 8px;font-size:18px;}
.step p{font-size:14.5px;}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.check-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 24px;box-shadow:var(--sh-1);transition:border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;}
.check-card:hover{border-color:rgba(27,59,111,.2);box-shadow:var(--sh-2);transform:translateY(-2px);}
.idx{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:8px;background:var(--indigo-soft);color:var(--indigo);font-size:14px;font-weight:700;}
.check-card h3{margin:16px 0 10px;font-size:18px;}
.check-card p{font-size:14.5px;color:var(--ink-2);}

/* ---------- CTA band ---------- */
.cta-band{background:var(--indigo-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:44px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;}
.cta-inner h2{font-size:24px;margin-bottom:8px;}
.cta-inner p{font-size:15px;max-width:640px;}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;}
.faq-list{display:grid;gap:14px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:border-color .18s ease-out,box-shadow .18s ease-out;}
.faq-item.is-open{border-color:rgba(27,59,111,.25);box-shadow:var(--sh-1);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;border:0;background:none;text-align:left;font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;position:relative;}
.faq-item.is-open .faq-q::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:2px;background:var(--orange);}
.faq-sign{flex:0 0 auto;font-size:20px;line-height:1;color:var(--indigo);transition:transform .2s ease-out;}
.faq-item.is-open .faq-sign{transform:rotate(45deg);color:var(--orange);}
.faq-a{display:none;padding:0 20px 20px;font-size:15px;color:var(--ink-2);}
.faq-item.is-open .faq-a{display:block;}

/* ---------- related cards ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);text-decoration:none;transition:border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;}
.rel-card:hover{border-color:rgba(27,59,111,.2);box-shadow:var(--sh-2);transform:translateY(-2px);}
.rel-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.rel-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body h3{font-size:18px;}
.rel-body p{font-size:14.5px;}
.rel-more{margin-top:auto;font-size:14px;font-weight:600;color:var(--indigo);}
.rel-card:hover .rel-more{color:var(--orange);}

/* ---------- footer ---------- */
.site-footer{background:var(--footer);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:16px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;}
.site-footer p{font-size:14px;line-height:1.85;}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);text-decoration:none;transition:color .18s ease-out;}
.footer-links a:hover{color:var(--orange);}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55);}

/* ---------- modal ---------- */
.modal{position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;padding:20px;background:rgba(27,59,111,.4);}
.modal.is-open{display:flex;}
.modal-card{position:relative;width:100%;max-width:520px;max-height:90vh;overflow:auto;background:#fff;border-radius:20px;padding:32px;box-shadow:0 24px 60px rgba(16,26,43,.25);}
.modal-card h3{font-size:22px;margin-bottom:8px;}
.modal-card > p{font-size:14.5px;margin-bottom:22px;}
.modal-close{position:absolute;right:16px;top:16px;width:36px;height:36px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-2);font-size:18px;line-height:1;cursor:pointer;transition:border-color .18s ease-out,color .18s ease-out;}
.modal-close:hover{border-color:var(--indigo);color:var(--indigo);}
.field{display:grid;gap:8px;margin-bottom:16px;}
.field label{font-size:14px;font-weight:600;color:var(--ink);}
.field input,.field select,.field textarea{width:100%;height:44px;padding:0 14px;background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);font-size:15px;outline:none;transition:border-color .18s ease-out,box-shadow .18s ease-out;}
.field textarea{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3);}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--indigo);box-shadow:0 0 0 2px rgba(240,138,36,.32);}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:#D64545;}
.field-error{display:none;font-size:12px;color:#D64545;}
.field.has-error .field-error{display:block;}
.privacy-note{margin-top:14px;font-size:12.5px;color:var(--ink-3);line-height:1.75;}
.form-success{display:none;text-align:center;padding:24px 0 8px;}
.form-success.is-open{display:block;}
.success-icon{width:52px;height:52px;margin:0 auto 16px;border-radius:50%;background:rgba(30,158,146,.1);color:var(--teal);display:grid;place-items:center;}
.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.45);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;display:none;}
.btn.is-loading .spinner{display:block;}
@keyframes spin{to{transform:rotate(360deg);}}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:130;display:none;background:rgba(16,26,43,.55);}
.drawer.is-open{display:block;}
.drawer-panel{position:absolute;inset:0;background:#fff;padding:24px;overflow:auto;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;font-size:18px;cursor:pointer;}
.drawer .search{max-width:none;height:44px;margin-bottom:20px;}
.drawer-links{display:grid;gap:10px;margin-bottom:24px;}
.drawer-links a{padding:14px 16px;border:1px solid var(--line);border-radius:12px;text-decoration:none;font-size:15px;color:var(--ink-2);}
.drawer-links a.is-active{background:var(--indigo);border-color:var(--indigo);color:#fff;}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .split{grid-template-columns:1fr;gap:64px;}
  .split-media img{min-height:280px;}
  .steps{grid-template-columns:repeat(2,1fr);gap:36px 24px;}
  .step::before{display:none;}
  .check-grid{grid-template-columns:repeat(2,1fr);}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .faq-layout{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .site-header.is-stuck{box-shadow:0 4px 16px rgba(16,26,43,.06);}
  .header-inner{flex-wrap:wrap;height:auto;padding:12px 0;gap:12px;}
  .brand{order:1;}
  .header-actions{order:2;}
  .search{order:3;flex:0 0 100%;max-width:none;height:44px;}
  .nav-toggle{display:flex;}
  .chips-inner{padding:10px 16px;}
  .page-hero{padding:32px 0 40px;}
  .def-row{grid-template-columns:1fr;gap:6px;padding:18px 0;}
  .steps{grid-template-columns:1fr;}
  .check-grid{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .media-note{position:static;width:100%;margin-top:16px;}
  .modal-card{padding:24px;}
}
@media (max-width:520px){
  .wrap{padding:0 16px;}
  .hero-actions .btn{width:100%;}
  .header-actions .btn{display:none;}
  h1{font-size:30px;}
}

/* roulang page: article */
:root{
  --brand:#1B3B6F;
  --brand-dark:#142C55;
  --brand-light:#E8EEF8;
  --accent:#F08A24;
  --accent-dark:#D4761A;
  --teal:#1E9E92;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --alt:#EEF2F8;
  --footer:#101A2B;
  --text:#101A2B;
  --body:#4B5A70;
  --muted:#8695A8;
  --border:#DFE6EF;
  --r-card:16px;
  --r-btn:10px;
  --r-img:20px;
  --shadow-sm:0 1px 2px rgba(16,26,43,.05);
  --shadow-md:0 10px 24px rgba(16,26,43,.08);
  --ease:.2s ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background:var(--bg);
}
h1,h2,h3,h4,h5{margin:0;color:var(--text);line-height:1.3;font-weight:700}
p{margin:0}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--accent)}
ul,ol{margin:0}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
input,select,textarea{font:inherit;color:inherit}
svg{display:block}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.2px;
  border:1px solid transparent;transition:all var(--ease);white-space:nowrap;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-1px)}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px}
.btn-text:hover{color:var(--accent)}
.btn:disabled,.btn.is-loading{opacity:.65;cursor:not-allowed;transform:none}

/* ---------- brand ---------- */
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-text{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.2px;white-space:nowrap}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow var(--ease);
}
.site-header.is-stuck{box-shadow:0 4px 16px rgba(16,26,43,.06)}
.header-inner{display:flex;align-items:center;gap:24px;height:76px}
.search{
  flex:1 1 auto;max-width:560px;height:48px;
  display:flex;align-items:center;gap:8px;
  padding:0 6px 0 16px;background:#fff;
  border:1px solid var(--border);border-radius:999px;
  color:var(--muted);transition:border-color var(--ease),box-shadow var(--ease);
}
.search:focus-within{border-color:var(--brand);box-shadow:0 0 0 2px rgba(240,138,36,.28)}
.search input{
  flex:1 1 auto;min-width:0;height:100%;border:0;background:transparent;outline:none;
  font-size:14.5px;color:var(--text);
}
.search input::placeholder{color:var(--muted)}
.search-btn{
  height:36px;padding:0 18px;border-radius:999px;background:var(--brand);color:#fff;
  font-size:14px;font-weight:600;transition:background var(--ease);
}
.search-btn:hover{background:var(--brand-dark)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--border);align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;transition:all var(--ease)}
.nav-toggle.is-active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- chips ---------- */
.chips-bar{border-top:1px solid var(--border);background:#fff}
.chips-inner{display:flex;align-items:center;gap:10px;height:52px;overflow-x:auto;scrollbar-width:none}
.chips-inner::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  border:1px solid var(--border);background:#fff;color:var(--body);
  font-size:14px;white-space:nowrap;transition:all var(--ease);
}
.chip:hover{border-color:rgba(27,59,111,.35);color:var(--brand);background:var(--brand-light)}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff}
.chip.is-active:hover{background:var(--brand-dark);color:#fff}

/* ---------- drawer ---------- */
.drawer{
  display:none;position:fixed;left:0;right:0;top:76px;bottom:0;z-index:79;
  background:#fff;padding:20px 24px 40px;overflow-y:auto;
}
.drawer.is-open{display:block}
.drawer-search{max-width:none;margin-bottom:18px}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--border)}
.drawer-nav a{padding:14px 2px;border-bottom:1px solid var(--border);font-size:15.5px;color:var(--text);font-weight:600}
.drawer-nav a:hover{color:var(--accent)}
.drawer .btn-block{margin-top:22px}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;color:#fff;padding:44px 0 46px;
  background:var(--brand-dark) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(20,44,85,.95) 0%,rgba(27,59,111,.88) 58%,rgba(30,158,146,.62) 100%);
}
.article-hero .wrap{position:relative;z-index:1}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:18px}
.crumbs a{color:rgba(255,255,255,.82)}
.crumbs a:hover{color:var(--accent)}
.crumbs .crumb-now{color:#fff;font-weight:500}
.article-title{
  font-size:clamp(28px,4vw,42px);line-height:1.28;font-weight:700;color:#fff;
  max-width:900px;margin-bottom:18px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:14px;color:rgba(255,255,255,.78)}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:500;color:var(--teal);
  border:1px solid rgba(30,158,146,.5);background:rgba(30,158,146,.12);
}
.article-hero .badge{color:#EAF7F5;border-color:rgba(255,255,255,.45);background:rgba(255,255,255,.14)}
.meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.5)}

/* ---------- article layout ---------- */
.article-section{padding:48px 0 80px}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:36px;align-items:start}
.article-main{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-img);
  padding:32px 36px 40px;box-shadow:var(--shadow-sm);min-width:0;
}
.article-cover{margin:0 0 30px;border-radius:16px;overflow:hidden;position:relative}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-cover figcaption{font-size:13px;color:var(--muted);text-align:center;padding:10px 0 0}

/* ---------- prose ---------- */
.prose{font-size:16px;line-height:1.9;color:var(--body);word-wrap:break-word}
.prose>p:first-child{font-size:17px;color:#42536b}
.prose p{margin:18px 0}
.prose h2{position:relative;font-size:24px;margin:40px 0 16px;padding-left:14px}
.prose h2::before{content:"";position:absolute;left:0;top:.3em;width:4px;height:.9em;background:var(--accent);border-radius:2px}
.prose h3{font-size:19px;color:var(--brand);margin:28px 0 12px}
.prose h4{font-size:17px;margin:22px 0 10px}
.prose ul,.prose ol{padding-left:22px;margin:18px 0}
.prose li{margin:8px 0}
.prose li::marker{color:var(--brand)}
.prose blockquote{
  margin:24px 0;padding:16px 20px;background:var(--brand-light);
  border-left:3px solid var(--brand);border-radius:0 12px 12px 0;
  font-style:italic;color:#3f4f67;
}
.prose img{border-radius:12px;margin:24px auto}
.prose a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:var(--accent)}
.prose table{width:100%;border-collapse:collapse;font-size:15px;margin:20px 0}
.prose th,.prose td{border:1px solid var(--border);padding:10px 12px;text-align:left}
.prose th{background:var(--alt);color:var(--text);font-weight:600}
.prose tr:nth-child(even) td{background:#FAFBFD}
.prose pre{background:#0F1B2E;color:#E6EDF7;padding:16px;border-radius:12px;overflow:auto;font-size:14px}
.prose hr{border:0;border-top:1px solid var(--border);margin:32px 0}

/* ---------- article footer ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:36px;padding-top:24px;border-top:1px solid var(--border)}
.tag-row .tag-label{font-size:14px;color:var(--muted)}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  background:var(--alt);color:var(--brand);font-size:13px;transition:all var(--ease);
}
.tag:hover{background:var(--brand-light);color:var(--brand-dark)}
.back-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:20px}

/* ---------- empty state ---------- */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:220px;padding:40px 24px;text-align:center;
  background:var(--alt);border-radius:var(--r-card);color:var(--muted);
}
.empty-state svg{color:var(--brand);opacity:.75}
.empty-state strong{color:var(--text);font-size:17px}

/* ---------- sidebar ---------- */
.article-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:110px}
.side-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px 20px 22px;box-shadow:var(--shadow-sm);
}
.side-title{font-size:15px;font-weight:700;color:var(--text);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-title::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--accent)}
.toc-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:4px}
.toc-list a{
  display:block;padding:7px 10px;border-left:2px solid transparent;border-radius:0 8px 8px 0;
  font-size:14px;color:var(--body);line-height:1.6;
}
.toc-list a:hover{background:var(--alt);color:var(--brand)}
.toc-list a.is-current{border-left-color:var(--accent);color:var(--brand);font-weight:600;background:var(--brand-light)}
.side-links{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px}
.side-links a{display:flex;gap:10px;font-size:14.5px;color:var(--body);line-height:1.6}
.side-links a:hover{color:var(--brand)}
.side-links .num{
  flex:0 0 auto;width:22px;height:22px;border-radius:6px;background:var(--brand-light);
  color:var(--brand);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.side-cta{background:var(--brand);border-color:var(--brand);color:#fff}
.side-cta .side-title{color:#fff}
.side-cta p{font-size:14px;color:rgba(255,255,255,.82);margin-bottom:16px}
.side-cta .btn{width:100%}

/* ---------- related ---------- */
.related{padding:0 0 72px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.section-head h2{font-size:26px}
.section-head p{font-size:14.5px;color:var(--muted);margin-top:8px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-sm);transition:all var(--ease);
  display:flex;flex-direction:column;
}
.card:hover{border-color:rgba(27,59,111,.35);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.card-img{width:100%;aspect-ratio:16/10;object-fit:cover}
.card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17.5px;line-height:1.5}
.card-body p{font-size:14.5px;color:var(--body)}
.card-meta{font-size:13px;color:var(--muted);margin-top:auto;display:flex;align-items:center;gap:8px}

/* ---------- cta strip ---------- */
.cta-strip{
  background:var(--brand-light);border:1px solid #D6E1F2;border-radius:var(--r-img);
  padding:28px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  margin-bottom:72px;
}
.cta-strip h3{font-size:20px;margin-bottom:6px}
.cta-strip p{font-size:14.5px;color:var(--body);max-width:640px}

/* ---------- footer ---------- */
.site-footer{background:var(--footer);color:rgba(255,255,255,.74);padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand span:last-child{color:#fff;font-size:16.5px;font-weight:700}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.74)}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- modal ---------- */
.modal{position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;padding:20px}
.modal.is-open{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(16,26,43,.55);backdrop-filter:blur(2px]}
.modal-card{
  position:relative;z-index:1;width:100%;max-width:520px;max-height:90vh;overflow-y:auto;
  background:#fff;border-radius:var(--r-img);padding:28px 28px 26px;box-shadow:0 24px 60px rgba(16,26,43,.24);
}
.modal-card h3{font-size:21px;margin-bottom:8px}
.modal-sub{font-size:14px;color:var(--muted);margin-bottom:20px}
.modal-close{
  position:absolute;top:16px;right:16px;width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;color:var(--muted);transition:all var(--ease);
}
.modal-close:hover{background:var(--alt);color:var(--brand)}
.form{display:flex;flex-direction:column;gap:14px}
.form label{display:flex;flex-direction:column;gap:7px;font-size:14px;color:var(--text);font-weight:600}
.form input,.form select,.form textarea{
  width:100%;padding:11px 14px;border:1px solid var(--border);border-radius:var(--r-btn);
  background:#fff;font-size:14.5px;font-weight:400;color:var(--text);outline:none;transition:all var(--ease);
}
.form textarea{min-height:88px;resize:vertical;line-height:1.7}
.form input::placeholder,.form textarea::placeholder{color:var(--muted)}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--brand);box-shadow:0 0 0 2px rgba(240,138,36,.3)}
.form input.is-error,.form select.is-error,.form textarea.is-error{border-color:#D64545}
.form-note{font-size:12.5px;color:var(--muted);line-height:1.7}
.form-success{display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;padding:24px 8px 8px}
.form-success strong{font-size:18px;color:var(--text)}

@media (max-width:1180px){
  .article-grid{grid-template-columns:minmax(0,1fr) 280px;gap:28px}
  .article-main{padding:28px 28px 34px}
}
@media (max-width:1024px){
  .wrap{padding:0 20px}
  .header-inner{gap:16px}
  .search{max-width:420px}
  .article-grid{grid-template-columns:1fr}
  .article-side{position:static}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .header-inner{height:64px;flex-wrap:wrap;gap:12px}
  .brand-text{font-size:16px}
  .search{order:3;max-width:none;flex:1 1 100%;height:44px;margin-bottom:12px}
  .nav-toggle{display:flex}
  .header-inner .btn{display:none}
  .header-inner{padding-top:8px;padding-bottom:4px;height:auto}
  .chips-inner{height:48px}
  .drawer{top:0}
  .article-hero{padding:32px 0 34px}
  .article-main{padding:22px 20px 28px}
  .article-section{padding:36px 0 56px}
  .cta-strip{padding:22px 20px;margin-bottom:56px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
}
@media (max-width:560px){
  .wrap{padding:0 16px}
  .card-grid{grid-template-columns:1fr}
  .article-title{font-size:26px}
  .prose h2{font-size:21px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
}

/* roulang page: category2 */
:root{
  --indigo:#1B3B6F;
  --indigo-dark:#142C55;
  --indigo-light:#E8EEF8;
  --orange:#F08A24;
  --orange-hover:#D4761A;
  --cyan:#1E9E92;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --alt:#EEF2F8;
  --footer-bg:#101A2B;
  --title:#101A2B;
  --text:#4B5A70;
  --muted:#8695A8;
  --border:#DFE6EF;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:20px;
  --shadow-1:0 1px 2px rgba(16,26,43,.05);
  --shadow-2:0 10px 24px rgba(16,26,43,.08);
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-num:"Inter","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--indigo);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--orange)}
button{font-family:inherit}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--title)}
h1,h2,h3,h4{color:var(--title);margin:0;line-height:1.35;font-weight:700}
p{margin:0 0 16px}
ul,ol{margin:0 0 16px;padding-left:20px}
li{margin-bottom:8px}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px}

.wrap{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
@media (min-width:1280px){.wrap{max-width:1240px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--indigo);color:#fff}
.btn-primary:hover{background:var(--indigo-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-accent{background:var(--orange);color:#fff}
.btn-accent:hover{background:var(--orange-hover);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(240,138,36,.28)}
.btn-ghost{background:transparent;color:var(--indigo);border-color:var(--indigo)}
.btn-ghost:hover{background:var(--indigo-light);color:var(--indigo-dark);transform:translateY(-1px)}
.btn-text{background:none;border:none;padding:0;height:auto;color:var(--indigo);font-weight:600;cursor:pointer}
.btn-text:hover{color:var(--orange)}
.btn:active{transform:translateY(0)}
.btn[disabled]{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:13px;line-height:1.6;
  color:var(--cyan);background:#F0FAF8;border:1px solid rgba(30,158,146,.4);
}
.tag{
  display:inline-block;padding:3px 10px;border-radius:999px;font-size:13px;
  background:var(--indigo-light);color:var(--indigo);border:1px solid #D3DEEF;
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--border);
}
.site-header.is-stuck{box-shadow:0 4px 16px rgba(16,26,43,.06)}
.header-inner{display:flex;align-items:center;gap:20px;height:76px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--indigo);
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-text{font-size:17px;font-weight:700;color:var(--title);letter-spacing:.2px}
.brand:hover .brand-text{color:var(--indigo)}
.search{
  flex:1;max-width:560px;height:48px;display:flex;align-items:center;gap:10px;
  background:#fff;border:1px solid var(--border);border-radius:999px;
  padding:0 6px 0 16px;color:var(--muted);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.search:focus-within{border-color:var(--indigo);box-shadow:0 0 0 3px rgba(240,138,36,.18)}
.search input{
  flex:1;border:none;outline:none;background:transparent;height:100%;
  font-size:15px;color:var(--title);min-width:0;
}
.search input::placeholder{color:var(--muted)}
.search-btn{
  height:36px;padding:0 18px;border:none;border-radius:999px;
  background:var(--indigo);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  transition:background-color .18s ease-out;
}
.search-btn:hover{background:var(--indigo-dark)}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;margin-left:auto}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--border);
  background:#fff;cursor:pointer;padding:0;position:relative;
}
.nav-toggle span{
  position:absolute;left:11px;right:11px;height:2px;background:var(--indigo);border-radius:2px;
  transition:transform .18s ease-out,opacity .18s ease-out;
}
.nav-toggle span:nth-child(1){top:14px}
.nav-toggle span:nth-child(2){top:19px}
.nav-toggle span:nth-child(3){top:24px}
.nav-toggle.is-active span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.chips-bar{background:#fff;border-bottom:1px solid var(--border)}
.chips-inner{
  display:flex;align-items:center;gap:10px;padding-top:10px;padding-bottom:12px;
  overflow-x:auto;scrollbar-width:none;
}
.chips-inner::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  font-size:14px;color:var(--title);background:#fff;border:1px solid var(--border);
  white-space:nowrap;flex-shrink:0;transition:all .18s ease-out;
}
.chip:hover{border-color:var(--indigo);color:var(--indigo)}
.chip.is-active{background:var(--indigo);border-color:var(--indigo);color:#fff}
.chip.is-active:hover{color:#fff;background:var(--indigo-dark)}

.mobile-drawer{
  display:none;background:#fff;border-bottom:1px solid var(--border);
  padding:16px 0 22px;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer .search{max-width:none;width:100%;margin-bottom:14px}
.mobile-drawer nav{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.mobile-drawer nav a{
  padding:10px 14px;border-radius:10px;font-size:15px;color:var(--title);
  background:var(--alt);
}
.mobile-drawer nav a.is-active{background:var(--indigo);color:#fff}

/* ---------- 面包屑 ---------- */
.crumb{font-size:14px;color:var(--muted);padding:22px 0 0}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--orange)}
.crumb span.sep{margin:0 8px;color:#C3CDDB}
.crumb .now{color:var(--text)}

/* ---------- Hero ---------- */
.hero{background:#fff;border-bottom:1px solid var(--border);padding-bottom:64px}
.hero-narrow{max-width:760px;margin:0 auto;text-align:center}
.hero h1{
  font-size:clamp(32px,4.4vw,46px);line-height:1.25;font-weight:700;margin:18px 0 20px;
}
.hero .lead{font-size:17px;line-height:1.9;color:var(--text);margin-bottom:26px}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:28px}
.anchor-chips{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.anchor-chips a{
  display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:999px;
  font-size:14px;color:var(--indigo);background:var(--indigo-light);border:1px solid #D3DEEF;
  transition:all .18s ease-out;
}
.anchor-chips a:hover{background:#fff;border-color:var(--indigo);color:var(--indigo-dark)}
.hero-media{
  max-width:960px;margin:44px auto 0;border-radius:var(--radius-img);overflow:hidden;
  position:relative;box-shadow:var(--shadow-1);
}
.hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(27,59,111,.08),rgba(20,44,85,.34));
}
.hero-media figcaption{
  position:absolute;left:24px;right:24px;bottom:20px;z-index:2;color:#fff;
  font-size:14px;line-height:1.7;text-shadow:0 1px 6px rgba(16,26,43,.5);
}

/* ---------- 板块 ---------- */
section.block{padding:88px 0}
section.block.alt{background:var(--alt)}
.block-head{max-width:760px;margin:0 auto 44px;text-align:center}
.block-head h2{font-size:30px;margin-bottom:14px}
.block-head h2::after{
  content:"";display:block;width:52px;height:3px;background:var(--orange);
  border-radius:2px;margin:18px auto 0;
}
.block-head p{margin:0;color:var(--text)}

.narrow{max-width:760px;margin:0 auto}

/* ---------- 关键节点小条 ---------- */
.key-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:34px;
}
.key-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-1);text-align:left;
  transition:border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.key-item:hover{border-color:rgba(27,59,111,.28);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.key-item strong{display:block;color:var(--title);font-size:16px;margin-bottom:6px}
.key-item span{font-size:14px;color:var(--muted);line-height:1.75}

/* ---------- 编号时间线 ---------- */
.timeline{position:relative;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:19px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--indigo-light),#D3DEEF);
}
.tl-item{position:relative;padding:0 0 34px 62px}
.tl-item:last-child{padding-bottom:0}
.tl-num{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;
  background:#fff;border:1px solid #D3DEEF;color:var(--indigo);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-weight:700;font-size:15px;
  box-shadow:0 0 0 6px var(--bg);
}
section.block.alt .tl-num{box-shadow:0 0 0 6px var(--alt)}
.tl-item h3{font-size:21px;font-weight:600;margin-bottom:8px}
.tl-item p{margin:0;color:var(--text)}
.tl-item .tl-note{
  display:inline-block;margin-top:10px;font-size:13px;color:var(--cyan);
  background:#F0FAF8;border:1px solid rgba(30,158,146,.35);
  border-radius:999px;padding:3px 12px;
}

/* ---------- 图文交替 ---------- */
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
}
.split.reverse .split-media{order:2}
.split.reverse .split-body{order:1}
.split-media{border-radius:var(--radius-img);overflow:hidden;box-shadow:var(--shadow-1)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-body h2{font-size:30px;margin-bottom:16px}
.split-body h2::after{
  content:"";display:block;width:48px;height:3px;background:var(--orange);border-radius:2px;margin:16px 0 20px;
}
.split-body p{margin-bottom:16px}
.check-list{list-style:none;padding:0;margin:0 0 22px}
.check-list li{position:relative;padding-left:28px;margin-bottom:12px;color:var(--text)}
.check-list li::before{
  content:"";position:absolute;left:4px;top:10px;width:7px;height:7px;border-radius:50%;
  background:var(--indigo);box-shadow:0 0 0 3px var(--indigo-light);
}

/* ---------- 数据条 ---------- */
.stats{background:var(--indigo);color:#fff;border-radius:var(--radius-card);padding:36px 24px;display:grid;grid-template-columns:repeat(4,1fr);gap:8px;text-align:center}
.stats .stat{border-right:1px solid rgba(255,255,255,.18);padding:0 10px}
.stats .stat:last-child{border-right:none}
.stats .num{font-family:var(--font-num);font-size:44px;font-weight:700;color:var(--orange);line-height:1.1}
.stats .lbl{font-size:14px;color:rgba(255,255,255,.78);margin-top:8px}

/* ---------- 中段 CTA ---------- */
.cta-bar{
  background:var(--indigo-light);border-top:1px solid #D8E2F2;border-bottom:1px solid #D8E2F2;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:38px 0;flex-wrap:wrap;
}
.cta-inner h3{font-size:22px;margin-bottom:6px}
.cta-inner p{margin:0;color:var(--text);font-size:15px}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:320px 1fr;gap:48px;align-items:start}
.faq-side h2{font-size:30px;margin-bottom:14px}
.faq-side h2::after{content:"";display:block;width:48px;height:3px;background:var(--orange);border-radius:2px;margin:16px 0 18px}
.faq-side p{color:var(--text);font-size:15px}
.faq-list details{
  background:var(--card);border:1px solid var(--border);border-radius:12px;
  margin-bottom:12px;overflow:hidden;transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.faq-list details[open]{border-color:rgba(240,138,36,.5);box-shadow:var(--shadow-1)}
.faq-list summary{
  list-style:none;cursor:pointer;padding:18px 22px;display:flex;align-items:center;
  justify-content:space-between;gap:16px;font-weight:600;color:var(--title);font-size:16px;
  position:relative;
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;
  background:var(--orange);opacity:0;transition:opacity .18s ease-out;
}
.faq-list details[open] summary::before{opacity:1}
.faq-list summary .plus{
  flex-shrink:0;width:22px;height:22px;position:relative;transition:transform .2s ease-out;
}
.faq-list summary .plus::before,
.faq-list summary .plus::after{
  content:"";position:absolute;background:var(--indigo);border-radius:2px;
}
.faq-list summary .plus::before{left:0;right:0;top:10px;height:2px}
.faq-list summary .plus::after{top:0;bottom:0;left:10px;width:2px}
.faq-list details[open] summary .plus{transform:rotate(45deg)}
.faq-list details[open] summary .plus::before,
.faq-list details[open] summary .plus::after{background:var(--orange)}
.faq-answer{padding:0 22px 20px;color:var(--text);font-size:15px;line-height:1.9;border-top:1px solid var(--border);padding-top:16px}

/* ---------- 相关分类卡 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.rel-card:hover{border-color:rgba(27,59,111,.28);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.rel-card h3{font-size:19px;margin-bottom:10px}
.rel-card p{font-size:14px;color:var(--muted);margin-bottom:18px;flex:1}
.rel-card .more{font-size:14px;font-weight:600;color:var(--indigo)}
.rel-card:hover .more{color:var(--orange)}

/* ---------- 弹层 ---------- */
.modal-mask{
  position:fixed;inset:0;background:rgba(20,44,85,.55);z-index:120;
  display:none;align-items:center;justify-content:center;padding:20px;
}
.modal-mask.is-open{display:flex}
.modal-card{
  background:#fff;border-radius:20px;max-width:520px;width:100%;
  padding:30px 28px 26px;position:relative;box-shadow:0 24px 60px rgba(16,26,43,.28);
  max-height:90vh;overflow-y:auto;
}
.modal-card h3{font-size:22px;margin-bottom:8px}
.modal-card .sub{font-size:14px;color:var(--muted);margin-bottom:22px}
.modal-close{
  position:absolute;top:16px;right:16px;width:34px;height:34px;border-radius:10px;
  border:1px solid var(--border);background:#fff;cursor:pointer;color:var(--muted);
  display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;
  transition:all .18s ease-out;
}
.modal-close:hover{color:var(--indigo);border-color:var(--indigo)}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:var(--title);font-weight:600;margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;padding:11px 14px;border:1px solid var(--border);border-radius:10px;
  background:#fff;outline:none;transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field textarea{min-height:88px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--muted)}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--indigo);box-shadow:0 0 0 3px rgba(240,138,36,.18);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:#D94A3D}
.field .err{display:none;font-size:12px;color:#D94A3D;margin-top:6px}
.field.has-error .err{display:block}
.modal-form .btn{width:100%;margin-top:6px}
.privacy-note{font-size:12px;color:var(--muted);line-height:1.75;margin:14px 0 0}
.form-success{display:none;text-align:center;padding:20px 0 8px}
.form-success .tick{
  width:56px;height:56px;border-radius:50%;background:#F0FAF8;border:1px solid rgba(30,158,146,.4);
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;
}
.form-success h4{font-size:19px;margin-bottom:8px}
.form-success p{font-size:14px;color:var(--muted)}
.spinner{
  width:16px;height:16px;border-radius:50%;border:2px solid rgba(255,255,255,.45);
  border-top-color:#fff;display:inline-block;animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:rgba(255,255,255,.72);padding:62px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:42px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:14px}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);margin:0}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:600}
.footer-links{display:flex;flex-direction:column;gap:9px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px}
.footer-links a:hover{color:var(--orange)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .header-inner{gap:14px}
  .brand-text{font-size:16px}
  .search{max-width:380px}
  .split{gap:32px}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .rel-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  section.block{padding:56px 0}
  .hero{padding-bottom:48px}
  .header-inner{height:64px;flex-wrap:wrap;padding-top:12px;padding-bottom:12px;height:auto}
  .brand-text{font-size:15px}
  .nav-toggle{display:block}
  .header-actions .btn{display:none}
  .header-inner .search{display:none}
  .key-strip{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr;gap:24px 8px;padding:28px 18px}
  .stats .stat{border-right:none}
  .stats .num{font-size:34px}
  .split{grid-template-columns:1fr}
  .split.reverse .split-media{order:1}
  .split.reverse .split-body{order:2}
  .rel-grid{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr}
  .block-head h2,.split-body h2,.faq-side h2{font-size:24px}
  .tl-item{padding-left:54px}
}
@media (max-width:520px){
  .wrap{padding:0 16px}
  .hero h1{font-size:28px}
  .hero .lead{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .stats{grid-template-columns:1fr 1fr}
  .modal-card{padding:24px 20px 22px}
}

/* roulang page: category3 */
:root{
  --navy:#1B3B6F;
  --navy-d:#142C55;
  --navy-l:#E8EEF8;
  --orange:#F08A24;
  --orange-d:#D4761A;
  --teal:#1E9E92;
  --bg:#F5F7FA;
  --alt:#EEF2F8;
  --card:#FFFFFF;
  --footer:#101A2B;
  --ink:#101A2B;
  --body:#4B5A70;
  --muted:#8695A8;
  --line:#DFE6EF;
  --r-card:16px;
  --r-btn:10px;
  --r-img:20px;
  --shadow-1:0 1px 2px rgba(16,26,43,.05);
  --shadow-2:0 10px 24px rgba(16,26,43,.08);
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--body);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--navy);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--orange-d)}
button{font-family:inherit}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.35;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1280px){.wrap{max-width:1240px}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow var(--ease)}
.site-header.is-stuck{box-shadow:0 4px 16px rgba(16,26,43,.06)}
.header-inner{display:flex;align-items:center;gap:18px;min-height:76px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);font-weight:700;font-size:17px;letter-spacing:.2px}
.brand:hover{color:var(--navy)}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--navy);display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.brand-text{white-space:nowrap}
.search{flex:1 1 auto;max-width:560px;height:48px;display:flex;align-items:center;gap:10px;padding:0 4px 0 16px;background:#fff;border:1px solid var(--line);border-radius:999px;color:var(--muted);transition:border-color var(--ease),box-shadow var(--ease)}
.search:focus-within{border-color:var(--navy);box-shadow:0 0 0 2px rgba(240,138,36,.35)}
.search input[type="search"]{flex:1 1 auto;min-width:0;height:100%;border:0;outline:none;background:transparent;font-size:15px;color:var(--ink)}
.search input::placeholder{color:var(--muted)}
.search-btn{height:38px;padding:0 20px;border:0;border-radius:999px;background:var(--navy);color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:background var(--ease),transform var(--ease)}
.search-btn:hover{background:var(--navy-d);transform:translateY(-1px)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;font-size:15px;font-weight:600;line-height:1;cursor:pointer;transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-d);color:#fff;transform:translateY(-1px)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy-d);color:#fff;transform:translateY(-1px)}
.btn-outline{background:transparent;border-color:var(--navy);color:var(--navy)}
.btn-outline:hover{background:var(--navy-l);color:var(--navy);transform:translateY(-1px)}
.btn-ghost{height:auto;padding:0;background:transparent;color:var(--navy);border:0;font-weight:600}
.btn-ghost:hover{color:var(--orange-d)}
.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--navy)}

.chips-bar{background:#fff;border-top:1px solid var(--line)}
.chips-inner{display:flex;align-items:center;gap:10px;overflow-x:auto;padding-top:10px;padding-bottom:10px;scrollbar-width:none}
.chips-inner::-webkit-scrollbar{display:none}
.chip{display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;border:1px solid rgba(27,59,111,.2);background:#fff;color:var(--navy);font-size:14px;white-space:nowrap;transition:background var(--ease),color var(--ease),border-color var(--ease)}
.chip:hover{background:var(--navy-l);color:var(--navy)}
.chip.is-active{background:var(--navy);border-color:var(--navy);color:#fff}

/* ---------- hero ---------- */
.cat-hero{position:relative;color:#fff;background:var(--navy-d) url("/assets/images/backpic/back-2.webp") center/cover no-repeat;overflow:hidden}
.cat-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(16,26,43,.9),rgba(27,59,111,.78))}
.cat-hero .wrap{position:relative;z-index:2;padding-top:56px;padding-bottom:56px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:18px}
.crumbs a{color:rgba(255,255,255,.82)}
.crumbs a:hover{color:#fff}
.crumbs span.sep{color:rgba(255,255,255,.45)}
.crumbs .now{color:#fff}
.eyebrow{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);color:#fff;font-size:13px;letter-spacing:.4px;margin-bottom:18px}
.cat-hero h1{color:#fff;font-size:clamp(30px,4.2vw,44px);line-height:1.25;max-width:860px}
.cat-hero .lede{margin-top:18px;max-width:760px;color:rgba(255,255,255,.86);font-size:17px}
.anchor-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.anchor-chips a{display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.3);color:#fff;font-size:14px;transition:background var(--ease),color var(--ease)}
.anchor-chips a:hover{background:#fff;color:var(--navy)}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section.alt{background:var(--alt)}
.section.tight{padding-top:64px;padding-bottom:64px}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head .label{display:inline-block;color:var(--teal);font-size:13px;letter-spacing:1px;font-weight:600;margin-bottom:12px}
.sec-head h2{font-size:30px;position:relative;padding-left:16px}
.sec-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--orange)}
.sec-head p{margin-top:14px;font-size:16px;color:var(--body)}

.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}

.cat-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1);overflow:hidden;transition:box-shadow var(--ease),border-color var(--ease),transform var(--ease)}
.cat-card:hover{border-color:rgba(27,59,111,.28);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.cat-card .cover{width:100%;height:180px;object-fit:cover}
.cat-card .card-body{padding:24px}
.cat-card h3{font-size:21px;font-weight:600;margin-bottom:10px}
.cat-card p{font-size:15px;color:var(--body)}
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;border:1px solid rgba(30,158,146,.4);background:rgba(30,158,146,.08);color:#177d74;font-size:13px;margin-bottom:14px}
.points{margin-top:16px;display:grid;gap:9px}
.points li{position:relative;padding-left:18px;font-size:15px;color:var(--body)}
.points li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--navy)}
.card-link{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:15px;font-weight:600;color:var(--navy)}
.card-link:hover{color:var(--orange-d)}

/* CTA band */
.cta-band{background:var(--navy-l);border-radius:var(--r-img);padding:32px 36px;display:flex;align-items:center;justify-content:space-between;gap:26px}
.cta-band h3{font-size:22px;margin-bottom:8px}
.cta-band p{font-size:15px;color:var(--body);max-width:640px}
.cta-band .btn{flex:0 0 auto}

/* compare table */
.table-scroll{overflow-x:auto;border-radius:var(--r-card);border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-1)}
table.compare{width:100%;min-width:760px;border-collapse:collapse}
table.compare th,table.compare td{padding:16px 20px;text-align:left;font-size:15px;border-bottom:1px solid var(--line)}
table.compare thead th{background:var(--navy-l);color:var(--navy);font-weight:600;font-size:15px;white-space:nowrap}
table.compare tbody tr:nth-child(even){background:#FAFBFD}
table.compare tbody tr:hover{background:#F1F5FC}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare td:first-child{font-weight:600;color:var(--ink)}

/* security checklist */
.check-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1);padding:28px}
.check-card h3{font-size:20px;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.check-list{display:grid;gap:14px}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--body)}
.check-list .tick{flex:0 0 auto;width:22px;height:22px;border-radius:50%;background:rgba(30,158,146,.12);display:inline-flex;align-items:center;justify-content:center;margin-top:4px}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start}
.faq-list{display:grid;gap:14px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;transition:border-color var(--ease),box-shadow var(--ease)}
.faq-item[open]{border-color:rgba(27,59,111,.24);box-shadow:var(--shadow-2)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px 18px 19px;border-left:3px solid transparent;font-size:16px;font-weight:600;color:var(--ink);transition:border-color var(--ease),color var(--ease)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item[open] summary{border-left-color:var(--orange);color:var(--navy)}
.faq-item summary .plus{flex:0 0 auto;transition:transform var(--ease)}
.faq-item[open] summary .plus{transform:rotate(45deg)}
.faq-item .answer{padding:0 22px 20px 22px;font-size:15px;color:var(--body)}

/* related categories */
.rel-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--shadow-1);transition:box-shadow var(--ease),border-color var(--ease),transform var(--ease)}
.rel-card:hover{border-color:rgba(27,59,111,.28);box-shadow:var(--shadow-2);transform:translateY(-2px);color:var(--navy)}
.rel-card h3{font-size:19px;margin-bottom:10px}
.rel-card p{font-size:15px;color:var(--body)}
.rel-card .state{display:inline-block;margin-top:16px;font-size:14px;font-weight:600;color:var(--orange-d)}

/* footer */
.site-footer{background:var(--footer);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:16px}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68)}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px}
.footer-links{display:grid;gap:10px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px}
.footer-links a:hover{color:var(--orange)}
.footer-bottom{margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55)}

/* drawer */
.drawer{position:fixed;inset:0;z-index:90;background:rgba(16,26,43,.5);display:none}
.drawer.is-open{display:block}
.drawer-panel{position:absolute;inset:0;background:#fff;padding:20px;overflow-y:auto}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-head .title{font-weight:700;color:var(--ink);font-size:17px}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);font-size:20px;line-height:1;cursor:pointer}
.drawer .search{max-width:none;margin-bottom:18px}
.drawer-links{display:grid;gap:6px;margin-bottom:22px}
.drawer-links a{padding:13px 4px;border-bottom:1px solid var(--line);color:var(--ink);font-size:16px}
.drawer-links a.is-active{color:var(--navy);font-weight:700}

/* modal */
.modal{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;padding:20px;background:rgba(27,59,111,.4)}
.modal.is-open{display:flex}
.modal-card{position:relative;width:100%;max-width:520px;background:#fff;border-radius:20px;box-shadow:0 24px 60px rgba(16,26,43,.22);padding:32px;max-height:90vh;overflow-y:auto}
.modal-card h3{font-size:22px;margin-bottom:8px}
.modal-card .hint{font-size:14px;color:var(--muted);margin-bottom:22px}
.modal-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);font-size:18px;cursor:pointer}
.field{display:grid;gap:8px;margin-bottom:16px}
.field label{font-size:14px;color:var(--ink);font-weight:600}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:var(--r-btn);padding:12px 14px;font-size:15px;color:var(--ink);background:#fff;font-family:inherit;transition:border-color var(--ease),box-shadow var(--ease)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--navy);box-shadow:0 0 0 2px rgba(240,138,36,.35)}
.field textarea{min-height:96px;resize:vertical}
.field .err{font-size:12px;color:#C0392B;display:none}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:#C0392B}
.field.has-error .err{display:block}
.modal .btn-submit{width:100%;background:var(--orange)}
.modal .btn-submit:hover{background:var(--orange-d)}
.privacy{margin-top:14px;font-size:12px;color:var(--muted);line-height:1.7}
.spinner{width:16px;height:16px;border-radius:50%;border:2px solid rgba(255,255,255,.45);border-top-color:#fff;animation:spin .7s linear infinite;display:inline-block}
@keyframes spin{to{transform:rotate(360deg)}}
.success-box{display:none;text-align:center;padding:12px 0 4px}
.success-box .ok{width:54px;height:54px;border-radius:50%;background:rgba(30,158,146,.12);display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px}
.success-box h4{font-size:19px;margin-bottom:10px}
.success-box p{font-size:14px;color:var(--body);margin-bottom:20px}
.is-hidden{display:none !important}

@media (max-width:1024px){
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .faq-layout{grid-template-columns:1fr;gap:28px}
}
@media (max-width:768px){
  .wrap{padding:0 20px}
  .header-inner{flex-wrap:wrap;padding-top:12px;padding-bottom:12px;min-height:64px;gap:12px}
  .brand{order:1}
  .header-actions{order:2;margin-left:auto}
  .search{order:3;flex:1 1 100%;max-width:none;height:44px}
  .header-actions .btn-primary{display:none}
  .nav-toggle{display:inline-flex}
  .chips-inner{padding-top:8px;padding-bottom:8px}
  .section{padding:56px 0}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:26px 24px}
  .cta-band .btn{width:100%}
  .cat-hero .wrap{padding-top:40px;padding-bottom:40px}
  .cat-hero .lede{font-size:16px}
  .sec-head h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .modal-card{padding:24px}
}
@media (max-width:560px){
  .cat-card .cover{height:160px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .anchor-chips a{height:34px;padding:0 14px;font-size:13px}
}