/* roulang page: index */
:root{
  --bg:#F6F9FB;
  --surface:#FFFFFF;
  --surface-2:#EEF6FA;
  --primary:#2B7FA8;
  --primary-dark:#1C5E80;
  --primary-light:#E4F2F9;
  --accent:#F08A24;
  --accent-dark:#C96A12;
  --green:#2FA98C;
  --ink:#16232E;
  --muted:#5F6F7C;
  --line:#E2EBF0;
  --radius-lg:18px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 8px 24px rgba(22,35,46,.06);
  --shadow-hover:0 12px 32px rgba(22,35,46,.10);
  --container:1240px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input,textarea,select{font:inherit;color:inherit;}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:12px;
  font-size:15px;font-weight:600;line-height:1;
  transition:background .22s ease,color .22s ease,box-shadow .22s ease,transform .18s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn:active{transform:scale(.98);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(240,138,36,.24);}
.btn-accent:hover{background:var(--accent-dark);box-shadow:0 10px 24px rgba(201,106,18,.28);transform:translateY(-1px);}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);}
.btn-outline{background:#fff;color:var(--primary-dark);border:1px solid var(--primary);}
.btn-outline:hover{background:var(--primary-light);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:0 6px 22px rgba(22,35,46,.08);}
.header-inner{
  display:flex;align-items:center;gap:26px;
  height:74px;
  transition:height .25s ease;
}
.site-header.is-stuck .header-inner{height:62px;}

.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#fff;font-weight:700;font-size:15px;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(28,94,128,.22);
}
.brand-name{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.2px;}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.5px;}

.main-nav{display:flex;align-items:center;gap:6px;flex:1;}
.nav-link{
  position:relative;
  padding:9px 14px;border-radius:9px;
  font-size:15px;font-weight:500;color:var(--muted);
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--primary-dark);background:var(--primary-light);}
.nav-link.active{color:var(--primary-dark);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--primary);border-radius:2px;
}

.header-tools{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.search-wrap{
  display:flex;align-items:center;gap:8px;
  height:40px;width:206px;padding:0 14px;
  background:var(--surface-2);
  border:1px solid transparent;border-radius:999px;
  transition:width .25s ease,background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.search-wrap:focus-within{
  width:262px;background:#fff;border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(43,127,168,.12);
}
.search-wrap i{color:var(--muted);font-size:13px;}
.search-wrap input{
  width:100%;border:none;background:transparent;outline:none;
  font-size:14px;color:var(--ink);
}
.search-wrap input::placeholder{color:#93A3AE;}

.nav-toggle{
  display:none;flex-direction:column;gap:5px;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:11px;border:1px solid var(--line);background:#fff;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:80;
  background:#fff;padding:88px 24px 32px;
  transform:translateX(100%);
  transition:transform .3s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;
  display:flex;flex-direction:column;gap:6px;
}
.mobile-drawer.is-open{transform:translateX(0);}
.mobile-drawer .nav-link{display:block;padding:14px 16px;font-size:16px;border-radius:12px;}
.mobile-drawer .nav-link.active{background:var(--primary-light);}
.mobile-drawer .nav-link.active::after{display:none;}
.drawer-foot{margin-top:20px;padding-top:20px;border-top:1px solid var(--line);}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:76px 0 88px;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;top:-40px;right:-80px;width:520px;height:520px;
  background-image:radial-gradient(rgba(43,127,168,.16) 1.4px,transparent 1.4px);
  background-size:22px 22px;
  opacity:.55;pointer-events:none;
  -webkit-mask-image:radial-gradient(circle at 60% 40%,#000 0%,transparent 72%);
  mask-image:radial-gradient(circle at 60% 40%,#000 0%,transparent 72%);
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.05fr .95fr;
  gap:60px;align-items:center;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:999px;
  background:var(--primary-light);color:var(--primary-dark);
  font-size:13px;font-weight:600;letter-spacing:.3px;
}
.hero h1{
  margin-top:22px;
  font-size:clamp(34px,3.6vw,46px);
  line-height:1.28;font-weight:700;letter-spacing:-.2px;
  color:var(--ink);
}
.hero h1 em{font-style:normal;color:var(--primary-dark);}
.hero-sub{
  margin-top:20px;
  font-size:17px;line-height:1.8;color:var(--muted);
  max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:22px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line);}
.hero-badge{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--muted);}
.hero-badge i{color:var(--green);font-size:14px;}

.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:22px;box-shadow:var(--shadow-hover);
}
.hero-stat{
  position:absolute;bottom:-22px;left:-24px;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:16px 22px;box-shadow:var(--shadow-hover);
  display:flex;align-items:center;gap:14px;
}
.hero-stat-num{font-size:26px;font-weight:700;color:var(--primary-dark);line-height:1;letter-spacing:-.5px;}
.hero-stat-text{font-size:13px;color:var(--muted);line-height:1.5;}

/* ============ 通用板块 ============ */
.section{padding:84px 0;}
.section-alt{background:var(--surface);}
.section-band{background:var(--surface-2);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:28px;
  margin-bottom:44px;
}
.eyebrow{
  display:inline-block;
  font-size:13px;font-weight:700;letter-spacing:1.2px;
  color:var(--primary);margin-bottom:10px;
}
.section-head h2{
  font-size:clamp(26px,2.4vw,32px);
  font-weight:700;line-height:1.35;color:var(--ink);
}
.section-desc{margin-top:12px;font-size:15px;color:var(--muted);max-width:620px;line-height:1.8;}
.text-link{
  display:inline-flex;align-items:center;gap:7px;
  color:var(--primary-dark);font-size:14px;font-weight:600;
  transition:gap .2s ease,color .2s ease;
}
.text-link:hover{gap:11px;color:var(--accent-dark);}

/* ============ 痛点问题 ============ */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.pain-card{
  position:relative;
  padding:30px 28px 30px 30px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.pain-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CFE3EE;}
.pain-index{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:34px;height:24px;padding:0 8px;border-radius:7px;
  background:var(--primary-light);color:var(--primary-dark);
  font-size:12px;font-weight:700;letter-spacing:.6px;margin-bottom:16px;
}
.pain-card h3{font-size:19px;font-weight:600;line-height:1.55;color:var(--ink);}
.pain-card p{margin-top:12px;font-size:14.5px;color:var(--muted);line-height:1.8;}
.pain-card .pain-arrow{
  position:absolute;right:26px;bottom:26px;
  color:#B9CCD8;font-size:15px;transition:transform .22s ease,color .22s ease;
}
.pain-card:hover .pain-arrow{transform:translateX(4px);color:var(--primary);}

/* ============ 解决方案 ============ */
.solution-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:24px;align-items:stretch;}
.solution-main{
  display:grid;grid-template-columns:1fr 1fr;gap:0;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease;
}
.solution-main:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.solution-main img{width:100%;height:100%;min-height:330px;object-fit:cover;}
.solution-main-body{padding:42px 38px;display:flex;flex-direction:column;justify-content:center;}
.solution-icon{
  width:48px;height:48px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-light);color:var(--primary-dark);font-size:19px;
  margin-bottom:20px;
}
.solution-main-body h3{font-size:23px;font-weight:700;line-height:1.42;color:var(--ink);}
.solution-main-body p{margin-top:14px;font-size:15px;color:var(--muted);line-height:1.8;}
.solution-main-body .text-link{margin-top:22px;}
.solution-side{display:grid;gap:24px;}
.solution-mini{
  padding:30px 28px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  display:flex;flex-direction:column;
}
.solution-mini:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CFE3EE;}
.solution-mini .solution-icon{width:42px;height:42px;font-size:17px;margin-bottom:16px;border-radius:12px;}
.solution-mini h3{font-size:19px;font-weight:600;color:var(--ink);line-height:1.5;}
.solution-mini p{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.8;}
.solution-mini .text-link{margin-top:18px;}

/* ============ 数据带 ============ */
.stat-band{
  background:var(--surface-2);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:60px 0;
}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-item{padding:0 8px;}
.stat-item + .stat-item{border-left:1px solid #D8E6EE;}
.stat-num{
  font-size:clamp(28px,2.6vw,36px);font-weight:700;line-height:1.15;
  color:var(--primary-dark);letter-spacing:-.5px;
}
.stat-num span{font-size:16px;font-weight:600;color:var(--green);margin-left:4px;}
.stat-label{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.7;}

/* ============ 最新资讯 ============ */
.news-layout{display:grid;grid-template-columns:1.06fr .94fr;gap:28px;align-items:start;}
.news-feature{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease;
}
.news-feature:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.news-feature-cover{display:block;overflow:hidden;}
.news-feature-cover img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  transition:transform .5s ease;
}
.news-feature:hover .news-feature-cover img{transform:scale(1.04);}
.news-feature-body{padding:28px 28px 30px;}
.meta-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--muted);}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:7px;
  font-size:12.5px;font-weight:600;letter-spacing:.2px;
}
.badge-primary{background:var(--primary-light);color:var(--primary-dark);}
.badge-soft{background:#EDF1F4;color:var(--muted);}
.badge-green{background:#E5F6F1;color:#1F7F69;}
.news-feature-body h3{margin-top:14px;font-size:22px;font-weight:700;line-height:1.5;color:var(--ink);transition:color .2s ease;}
.news-feature:hover h3{color:var(--primary-dark);}
.news-feature-body p{margin-top:12px;font-size:14.5px;color:var(--muted);line-height:1.8;}
.news-feature-body .text-link{margin-top:18px;}

.news-list{display:grid;gap:14px;}
.news-item{
  display:flex;align-items:center;gap:18px;
  padding:22px 24px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:0 4px 14px rgba(22,35,46,.04);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-item:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#CFE3EE;}
.news-item-main{flex:1;min-width:0;}
.news-item h4{
  margin-top:10px;font-size:17px;font-weight:600;line-height:1.55;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.news-item:hover h4{color:var(--primary-dark);}
.news-item p{
  margin-top:8px;font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-item-arrow{color:#B9CCD8;font-size:14px;transition:transform .22s ease,color .22s ease;flex-shrink:0;}
.news-item:hover .news-item-arrow{transform:translateX(4px);color:var(--primary);}

.empty-state{
  padding:72px 24px;text-align:center;
  background:var(--surface);border:1px dashed #CFE0E9;border-radius:var(--radius-lg);
}
.empty-state i{font-size:34px;color:#B7CDD9;}
.empty-state p{margin:16px 0 22px;font-size:15px;color:var(--muted);}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item:hover{border-color:#CFE3EE;}
.faq-item.is-open{border-color:#CFE3EE;box-shadow:var(--shadow);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 26px;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-sign{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  background:var(--primary-light);color:var(--primary-dark);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;transition:transform .28s ease,background .28s ease,color .28s ease;
}
.faq-item.is-open .faq-sign{transform:rotate(135deg);background:var(--primary);color:#fff;}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .32s ease;
}
.faq-a-inner{
  padding:0 26px 24px;font-size:14.8px;color:var(--muted);line-height:1.85;
  border-top:1px solid var(--line);padding-top:18px;margin:0 26px 24px;padding-left:0;padding-right:0;
}

/* ============ CTA ============ */
.cta-block{
  position:relative;
  background:linear-gradient(120deg,var(--primary-dark) 0%,var(--primary) 100%);
  border-radius:24px;
  padding:64px 56px;
  overflow:hidden;
  box-shadow:0 18px 44px rgba(28,94,128,.20);
}
.cta-block::after{
  content:"";position:absolute;right:-60px;top:-60px;width:320px;height:320px;border-radius:50%;
  background:rgba(255,255,255,.08);
}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta-copy h2{font-size:clamp(24px,2.2vw,30px);font-weight:700;color:#fff;line-height:1.4;}
.cta-copy p{margin-top:14px;font-size:15px;color:rgba(255,255,255,.82);max-width:560px;line-height:1.8;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-actions .btn-outline{background:transparent;border-color:rgba(255,255,255,.6);color:#fff;}
.cta-actions .btn-outline:hover{background:rgba(255,255,255,.14);}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#C6D3DC;margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:44px;padding:70px 24px 54px;
}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-mark{
  background:linear-gradient(135deg,var(--primary) 0%,#3D9BC4 100%);
  box-shadow:none;
}
.footer-brand p{margin-top:20px;font-size:14px;line-height:1.85;color:#93A6B2;max-width:330px;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:20px;letter-spacing:.3px;}
.footer-col ul{display:grid;gap:12px;}
.footer-col a{font-size:14px;color:#93A6B2;transition:color .2s ease,padding-left .2s ease;}
.footer-col a:hover{color:var(--accent);padding-left:4px;}
.footer-col li span{font-size:14px;color:#93A6B2;line-height:1.7;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.10);}
.footer-bottom-inner{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:24px;font-size:13px;color:#7E8F9B;
}
.footer-bottom-inner a{color:#9FB2BE;transition:color .2s ease;}
.footer-bottom-inner a:hover{color:var(--accent);}

/* ============ 弹层 ============ */
.modal{position:fixed;inset:0;z-index:120;display:none;}
.modal.is-open{display:block;}
.modal-mask{position:absolute;inset:0;background:rgba(22,35,46,.48);}
.modal-panel{
  position:relative;z-index:1;
  width:520px;max-width:calc(100% - 40px);
  margin:6vh auto 0;
  background:#fff;border-radius:20px;
  padding:36px 34px 32px;
  box-shadow:0 24px 60px rgba(22,35,46,.26);
  max-height:88vh;overflow-y:auto;
  animation:modalIn .28s ease;
}
@keyframes modalIn{from{opacity:0;transform:translateY(14px);}to{opacity:1;transform:translateY(0);}}
.modal-close{
  position:absolute;top:16px;right:16px;
  width:36px;height:36px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  color:var(--muted);background:var(--surface-2);
  transition:background .2s ease,color .2s ease;
}
.modal-close:hover{background:#E1ECF2;color:var(--ink);}
.modal-panel h3{font-size:22px;font-weight:700;color:var(--ink);}
.modal-sub{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.75;}
.modal-form{margin-top:24px;display:grid;gap:16px;}
.modal-form label{display:block;font-size:14px;font-weight:600;color:var(--ink);}
.modal-form input[type="text"],
.modal-form textarea{
  width:100%;margin-top:8px;
  padding:12px 14px;
  background:var(--bg);
  border:1px solid var(--line);border-radius:11px;
  font-size:14.5px;font-weight:400;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  outline:none;resize:vertical;
}
.modal-form input[type="text"]:focus,
.modal-form textarea:focus{
  background:#fff;border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(43,127,168,.12);
}
.check-row{display:flex;gap:10px;align-items:flex-start;font-weight:400;}
.check-row input{margin-top:5px;accent-color:var(--primary);width:15px;height:15px;flex-shrink:0;}
.check-row span{font-size:13px;color:var(--muted);line-height:1.7;font-weight:400;}
.privacy-note{font-size:12.5px;color:#93A3AE;line-height:1.7;text-align:center;}
.form-done{
  margin-top:6px;padding:12px 14px;border-radius:11px;
  background:#E5F6F1;color:#1F7F69;font-size:14px;text-align:center;
}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:48px;}
  .hero-sub{max-width:none;}
  .hero::before{opacity:.35;}
  .solution-grid{grid-template-columns:1fr;}
  .solution-main img{min-height:260px;}
  .news-layout{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:32px 24px;}
  .stat-item + .stat-item{border-left:none;}
  .stat-item:nth-child(even){border-left:1px solid #D8E6EE;padding-left:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-block{padding:52px 40px;}
}
@media (max-width:820px){
  .search-wrap{display:none;}
  .header-tools{gap:10px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .hero{padding:48px 0 64px;}
  .hero-badges{gap:16px;margin-top:26px;padding-top:20px;}
  .hero-stat{left:12px;bottom:-18px;padding:12px 16px;}
  .hero-stat-num{font-size:22px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px;}
  .pain-grid{grid-template-columns:1fr;gap:16px;}
  .pain-card{padding:26px 22px;}
  .solution-main{grid-template-columns:1fr;}
  .solution-main-img{order:-1;}
  .solution-main img{min-height:210px;}
  .solution-main-body{padding:30px 24px;}
  .solution-main-body h3{font-size:20px;}
  .stat-grid{grid-template-columns:1fr;gap:26px;}
  .stat-item:nth-child(even){border-left:none;padding-left:0;}
  .stat-band{padding:44px 0;}
  .news-feature-body{padding:22px 20px 24px;}
  .news-feature-body h3{font-size:19px;}
  .news-item{padding:18px;gap:12px;}
  .news-item h4{font-size:16px;}
  .faq-q{padding:18px 20px;font-size:16px;}
  .faq-a-inner{margin:0 20px 20px;padding-top:14px;font-size:14.4px;}
  .cta-block{padding:40px 24px;border-radius:20px;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:26px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding:50px 18px 40px;}
  .footer-bottom-inner{flex-direction:column;align-items:flex-start;gap:10px;padding:20px 18px;}
  .modal-panel{width:100%;max-width:100%;margin:0;border-radius:0;min-height:100vh;padding:32px 22px 40px;}
}
@media (max-width:520px){
  .hero h1{font-size:28px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .brand-name{font-size:16px;}
  .badge{font-size:12px;}
}

/* roulang page: category1 */
:root{
    --bg:#F6F9FB;
    --surface:#FFFFFF;
    --surface-2:#EEF6FA;
    --brand:#2B7FA8;
    --brand-deep:#1C5E80;
    --brand-soft:#E4F2F9;
    --accent:#F08A24;
    --accent-deep:#C96A12;
    --mint:#2FA98C;
    --ink:#16232E;
    --muted:#5F6F7C;
    --line:#E2EBF0;
    --radius:16px;
    --radius-lg:22px;
    --shadow-card:0 8px 24px rgba(22,35,46,.06);
    --shadow-hover:0 12px 32px rgba(22,35,46,.10);
    --section-y:76px;
  }

  *,*::before,*::after{ box-sizing:border-box; }
  html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC','system-ui',sans-serif;
    font-size:16px;
    line-height:1.75;
    font-weight:400;
  }
  img{ max-width:100%; display:block; border:0; }
  a{ color:inherit; text-decoration:none; }
  button,input,textarea{ font:inherit; color:inherit; }
  button{ cursor:pointer; background:none; border:0; }
  ul{ margin:0; padding:0; list-style:none; }
  h1,h2,h3,h4{ margin:0; font-weight:700; line-height:1.35; letter-spacing:-0.01em; }
  p{ margin:0; }
  a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{
    outline:2px solid var(--brand);
    outline-offset:2px;
    border-radius:6px;
  }

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

  /* ---------- header ---------- */
  .site-header{
    position:sticky; top:0; z-index:80;
    background:rgba(255,255,255,.94);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .25s ease;
  }
  .site-header.is-stuck{ box-shadow:0 8px 22px rgba(22,35,46,.08); }
  .header-top-inner{
    display:flex; align-items:center; gap:22px; height:74px;
    transition:height .25s ease;
  }
  .site-header.is-stuck .header-top-inner{ height:62px; }
  .brand{ display:flex; align-items:center; gap:10px; flex-shrink:0; }
  .brand-mark{
    width:38px; height:38px; border-radius:11px;
    background:linear-gradient(135deg,#2B7FA8,#1C5E80);
    color:#fff; font-weight:700; font-size:15px; letter-spacing:.5px;
    display:grid; place-items:center;
    box-shadow:0 6px 16px rgba(28,94,128,.28);
  }
  .brand-name{ font-size:17px; font-weight:700; color:var(--ink); white-space:nowrap; }

  .header-tools{ margin-left:auto; display:flex; align-items:center; gap:16px; }
  .search-box{
    display:flex; align-items:center; gap:8px;
    background:var(--surface-2);
    border:1px solid var(--line);
    border-radius:999px;
    padding:8px 14px; width:196px;
    transition:width .25s ease, border-color .2s ease, box-shadow .2s ease;
  }
  .search-box:focus-within{ width:286px; border-color:var(--brand); box-shadow:0 0 0 4px var(--brand-soft); }
  .search-box i{ color:var(--muted); font-size:13px; }
  .search-box input{ border:0; background:transparent; outline:none; width:100%; font-size:14px; }
  .search-box input::placeholder{ color:#93A3AE; }

  .hot-tags{ display:flex; gap:8px; align-items:center; }
  .tag{
    display:inline-flex; align-items:center; gap:6px;
    font-size:12.5px; padding:5px 11px; border-radius:999px;
    background:var(--brand-soft); color:var(--brand-deep);
    border:1px solid rgba(43,127,168,.16);
    white-space:nowrap; transition:.2s ease;
  }
  .tag:hover{ background:#D6EAF5; }
  .tag-mint{ background:rgba(47,169,140,.12); color:#1F7F69; border-color:rgba(47,169,140,.22); }
  .tag-mint:hover{ background:rgba(47,169,140,.20); }

  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    height:46px; padding:0 22px; border-radius:12px;
    font-size:15px; font-weight:600; border:1px solid transparent;
    transition:all .2s ease; white-space:nowrap;
  }
  .btn:active{ transform:scale(.98); }
  .btn-accent{ background:var(--accent); color:#fff; box-shadow:0 8px 20px rgba(240,138,36,.26); }
  .btn-accent:hover{ background:var(--accent-deep); box-shadow:0 10px 24px rgba(201,106,18,.28); }
  .btn-outline{ background:#fff; color:var(--brand-deep); border-color:rgba(43,127,168,.35); }
  .btn-outline:hover{ background:var(--brand-soft); border-color:var(--brand); }
  .btn-ghost{ background:transparent; color:var(--brand-deep); border-color:transparent; }
  .btn-ghost:hover{ background:var(--brand-soft); }
  .btn-sm{ height:40px; padding:0 16px; font-size:14px; border-radius:10px; }

  .header-channel{ border-top:1px solid var(--line); background:#fff; }
  .channel-inner{ display:flex; align-items:center; gap:20px; height:54px; }
  .main-nav{ display:flex; align-items:center; gap:6px; flex:1; overflow-x:auto; scrollbar-width:none; }
  .main-nav::-webkit-scrollbar{ display:none; }
  .nav-link{
    position:relative; padding:9px 14px; border-radius:10px;
    font-size:15px; font-weight:500; color:var(--ink);
    white-space:nowrap; transition:background .2s ease, color .2s ease;
  }
  .nav-link:hover{ background:var(--brand-soft); color:var(--brand-deep); }
  .nav-link.active{ color:var(--brand-deep); font-weight:700; }
  .nav-link.active::after{
    content:''; position:absolute; left:14px; right:14px; bottom:-2px;
    height:3px; border-radius:3px; background:var(--brand);
  }
  .channel-meta{ font-size:13px; color:var(--muted); white-space:nowrap; }

  .nav-toggle{
    display:none; margin-left:auto;
    width:44px; height:44px; border-radius:12px;
    border:1px solid var(--line); background:#fff; color:var(--brand-deep);
    align-items:center; justify-content:center; font-size:17px;
    transition:.2s ease;
  }
  .nav-toggle:hover{ background:var(--brand-soft); }

  .mobile-drawer{ display:none; border-top:1px solid var(--line); background:#fff; padding:8px 0 18px; }
  .mobile-drawer.open{ display:block; }
  .mobile-drawer .m-link{
    display:block; padding:13px 6px; font-size:15.5px; font-weight:500;
    border-bottom:1px dashed var(--line); color:var(--ink);
  }
  .mobile-drawer .m-link.active{ color:var(--brand-deep); font-weight:700; }
  .mobile-drawer .m-foot{ display:flex; gap:12px; margin-top:16px; flex-wrap:wrap; }

  /* ---------- breadcrumb ---------- */
  .crumb-wrap{ background:#fff; border-bottom:1px solid var(--line); }
  .crumb{ display:flex; align-items:center; gap:8px; flex-wrap:wrap; font-size:13.5px; color:var(--muted); padding:14px 0; }
  .crumb a{ color:var(--brand-deep); }
  .crumb a:hover{ text-decoration:underline; text-underline-offset:3px; }
  .crumb i{ font-size:10px; color:#A9B8C2; }
  .crumb .current{ color:var(--muted); }

  /* ---------- hero ---------- */
  .hero{
    position:relative; overflow:hidden;
    padding:58px 0 72px;
    background:linear-gradient(180deg,#F6F9FB 0%,#EEF6FA 100%);
  }
  .hero::before{
    content:''; position:absolute; inset:0;
    background-image:radial-gradient(rgba(43,127,168,.14) 1px, transparent 1px);
    background-size:22px 22px;
    mask-image:linear-gradient(180deg, rgba(0,0,0,.55), transparent 72%);
    -webkit-mask-image:linear-gradient(180deg, rgba(0,0,0,.55), transparent 72%);
    pointer-events:none;
  }
  .hero-grid{ position:relative; display:grid; grid-template-columns:1.05fr .95fr; gap:52px; align-items:center; }
  .eyebrow{
    display:inline-flex; align-items:center; gap:8px;
    padding:7px 13px; border-radius:8px;
    border:1px solid rgba(43,127,168,.32); background:#fff;
    color:var(--brand-deep); font-size:13px; font-weight:600; letter-spacing:.06em;
  }
  .hero h1{ margin:20px 0 16px; font-size:clamp(30px,4.1vw,44px); line-height:1.26; }
  .hero h1 em{ font-style:normal; color:var(--brand-deep); }
  .hero-lead{ font-size:16.5px; color:var(--muted); max-width:580px; }
  .hero-actions{ display:flex; gap:14px; flex-wrap:wrap; margin-top:28px; }
  .hero-note{ margin-top:18px; font-size:13.5px; color:var(--muted); display:flex; align-items:center; gap:8px; }
  .hero-note i{ color:var(--mint); }

  .hero-visual{ position:relative; }
  .hero-visual img{
    width:100%; aspect-ratio:4/3; object-fit:cover;
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow-hover);
    border:1px solid rgba(255,255,255,.8);
  }
  .hero-float{
    position:absolute; left:-18px; bottom:-20px;
    background:#fff; border:1px solid var(--line); border-radius:14px;
    box-shadow:var(--shadow-card); padding:14px 18px; min-width:186px;
  }
  .hero-float strong{ display:block; font-size:20px; color:var(--brand-deep); }
  .hero-float span{ font-size:12.5px; color:var(--muted); }

  /* ---------- section basics ---------- */
  .section{ padding:var(--section-y) 0; }
  .section-white{ background:#fff; border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
  .section-head{ max-width:740px; margin-bottom:38px; }
  .section-head h2{ font-size:clamp(24px,3vw,32px); }
  .section-head p{ margin-top:14px; color:var(--muted); font-size:15.5px; }
  .kicker{ font-size:13px; font-weight:700; letter-spacing:.14em; color:var(--brand); text-transform:uppercase; margin-bottom:10px; }

  .grid-2{ display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:24px; }
  .grid-3{ display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:22px; }

  /* ---------- key points ---------- */
  .key-points{ margin-top:30px; display:grid; gap:12px; }
  .key-points li{ display:flex; gap:12px; align-items:flex-start; font-size:15.5px; }
  .key-points .kp-icon{
    flex:0 0 24px; width:24px; height:24px; margin-top:3px;
    border-radius:8px; background:var(--brand-soft); color:var(--brand-deep);
    display:grid; place-items:center; font-size:11px;
  }
  .key-points strong{ color:var(--ink); }

  /* ---------- cards ---------- */
  .card{
    background:#fff; border:1px solid var(--line); border-radius:var(--radius);
    box-shadow:var(--shadow-card);
    transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    overflow:hidden; display:flex; flex-direction:column; height:100%;
  }
  .card:hover{ transform:translateY(-2px); box-shadow:var(--shadow-hover); border-color:#D3E4EE; }
  .card-media{ position:relative; overflow:hidden; }
  .card-media img{ width:100%; aspect-ratio:16/9; object-fit:cover; transition:transform .4s ease; }
  .card:hover .card-media img{ transform:scale(1.03); }
  .card-badge{
    position:absolute; left:14px; top:14px;
    background:rgba(255,255,255,.94); color:var(--brand-deep);
    font-size:12.5px; font-weight:600; padding:5px 11px; border-radius:999px;
    border:1px solid rgba(43,127,168,.18);
  }
  .card-body{ padding:22px 24px 24px; display:flex; flex-direction:column; gap:12px; flex:1; }
  .card h3{ font-size:19px; }
  .card p{ color:var(--muted); font-size:14.5px; }
  .card-meta{ display:flex; align-items:center; justify-content:space-between; gap:12px; margin-top:auto; padding-top:6px; }
  .card-link{ color:var(--brand-deep); font-size:14px; font-weight:600; display:inline-flex; align-items:center; gap:6px; }
  .card-link i{ transition:transform .2s ease; font-size:12px; }
  .card-link:hover i{ transform:translateX(4px); }
  .meta-time{ font-size:13px; color:#8593A0; }

  /* ---------- steps ---------- */
  .step-list{ border-top:1px solid var(--line); }
  .step{ display:flex; gap:20px; padding:26px 0; border-bottom:1px solid var(--line); align-items:flex-start; }
  .step-num{
    flex:0 0 42px; width:42px; height:42px; border-radius:13px;
    background:var(--brand-soft); color:var(--brand-deep);
    font-weight:700; font-size:15px; display:grid; place-items:center;
  }
  .step h3{ font-size:17.5px; }
  .step p{ margin-top:8px; color:var(--muted); font-size:14.5px; }
  .step-side{ flex:0 0 132px; font-size:13px; color:var(--brand-deep); font-weight:600; text-align:right; padding-top:4px; }

  /* ---------- stats ---------- */
  .stats-band{
    background:linear-gradient(120deg,#1C5E80,#2B7FA8);
    border-radius:var(--radius-lg); color:#fff;
    padding:38px 36px;
    display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:26px;
    box-shadow:0 18px 40px rgba(28,94,128,.22);
  }
  .stat-item{ border-left:1px solid rgba(255,255,255,.18); padding-left:20px; }
  .stat-item:first-child{ border-left:0; padding-left:0; }
  .stat-item strong{ display:block; font-size:clamp(26px,3vw,34px); line-height:1.2; color:#fff; }
  .stat-item strong i{ font-size:16px; color:#9FE3D1; font-style:normal; margin-left:2px; }
  .stat-item span{ display:block; margin-top:8px; font-size:13.5px; color:rgba(255,255,255,.78); }

  /* ---------- topic tags ---------- */
  .tag-cloud{ display:flex; flex-wrap:wrap; gap:10px; margin-top:22px; }
  .chip{
    display:inline-flex; align-items:center; gap:7px;
    padding:9px 15px; border-radius:999px; font-size:14px;
    background:#fff; border:1px solid var(--line); color:var(--ink);
    box-shadow:0 4px 12px rgba(22,35,46,.04);
    transition:.2s ease;
  }
  .chip:hover{ border-color:var(--brand); color:var(--brand-deep); background:var(--brand-soft); }
  .chip i{ font-size:12px; color:var(--brand); }

  /* ---------- faq ---------- */
  .faq-item{
    background:#fff; border:1px solid var(--line); border-radius:14px;
    box-shadow:var(--shadow-card); margin-bottom:14px; overflow:hidden;
    transition:box-shadow .25s ease;
  }
  .faq-item:hover{ box-shadow:var(--shadow-hover); }
  .faq-item summary{
    list-style:none; cursor:pointer; padding:19px 24px;
    display:flex; align-items:center; justify-content:space-between; gap:18px;
    font-size:16.5px; font-weight:600;
  }
  .faq-item summary::-webkit-details-marker{ display:none; }
  .faq-icon{
    flex:0 0 30px; width:30px; height:30px; border-radius:9px;
    background:var(--brand-soft); color:var(--brand-deep);
    display:grid; place-items:center; font-size:13px;
    transition:transform .25s ease, background .25s ease;
  }
  .faq-item[open] .faq-icon{ transform:rotate(135deg); background:#D6EAF5; }
  .faq-item[open] summary{ color:var(--brand-deep); }
  .faq-answer{ padding:0 24px 22px; color:var(--muted); font-size:15px; border-top:1px dashed var(--line); margin-top:0; padding-top:16px; }

  /* ---------- cta ---------- */
  .cta-panel{
    background:linear-gradient(120deg,#16232E 0%,#1C5E80 62%,#2B7FA8 100%);
    color:#fff; border-radius:var(--radius-lg);
    padding:48px; display:grid; grid-template-columns:1.1fr .9fr; gap:44px;
    box-shadow:0 20px 46px rgba(22,35,46,.24);
  }
  .cta-panel h2{ font-size:clamp(24px,3vw,30px); color:#fff; }
  .cta-panel p{ margin-top:14px; color:rgba(255,255,255,.8); font-size:15.5px; }
  .cta-points{ margin-top:24px; display:grid; gap:10px; }
  .cta-points li{ display:flex; gap:10px; align-items:center; font-size:14.5px; color:rgba(255,255,255,.9); }
  .cta-points i{ color:#9FE3D1; font-size:13px; }

  .form-card{
    background:#fff; border-radius:var(--radius); padding:26px;
    box-shadow:0 14px 34px rgba(0,0,0,.18);
  }
  .form-card h3{ font-size:18px; color:var(--ink); }
  .form-card .form-tip{ margin-top:6px; font-size:13.5px; color:var(--muted); }
  .field{ margin-top:14px; }
  .field label{ display:block; font-size:13.5px; color:var(--muted); margin-bottom:6px; }
  .field input,.field textarea{
    width:100%; border:1px solid var(--line); border-radius:11px;
    padding:11px 14px; font-size:14.5px; background:#FBFDFE;
    transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
  }
  .field input:focus,.field textarea:focus{
    outline:none; border-color:var(--brand); background:#fff;
    box-shadow:0 0 0 4px var(--brand-soft);
  }
  .field textarea{ min-height:84px; resize:vertical; }
  .check-row{ display:flex; align-items:flex-start; gap:9px; margin-top:14px; font-size:13px; color:var(--muted); }
  .check-row input{ margin-top:3px; accent-color:var(--brand); }
  .form-card .btn{ width:100%; margin-top:16px; }
  .privacy{ margin-top:12px; font-size:12.5px; color:#8593A0; }

  /* ---------- back nav ---------- */
  .back-nav{ display:flex; flex-wrap:wrap; gap:14px; align-items:center; margin-top:34px; }
  .back-nav .divider{ width:1px; height:18px; background:var(--line); }

  /* ---------- footer ---------- */
  .site-footer{ background:#16232E; color:#C7D5DE; padding-top:64px; margin-top:0; }
  .footer-grid{
    display:grid; grid-template-columns:1.5fr 1fr 1fr 1fr; gap:38px;
    padding-bottom:46px;
  }
  .footer-brand .brand-mark{ background:linear-gradient(135deg,#2B7FA8,#4EA3C9); }
  .footer-brand .brand-name{ color:#fff; }
  .footer-brand p{ margin-top:16px; font-size:14px; color:#93A6B2; max-width:330px; }
  .footer-col h4{ color:#fff; font-size:15px; margin-bottom:16px; font-weight:600; }
  .footer-col ul li{ margin-bottom:11px; font-size:14px; color:#9CAEBA; }
  .footer-col ul li a{ color:#C7D5DE; transition:color .2s ease; }
  .footer-col ul li a:hover{ color:#7FC8E8; }
  .footer-bottom{ border-top:1px solid rgba(255,255,255,.12); padding:20px 0; }
  .footer-bottom-inner{
    display:flex; align-items:center; justify-content:space-between;
    gap:16px; flex-wrap:wrap; font-size:13.5px; color:#8FA3AF;
  }
  .footer-bottom-inner a{ color:#7FC8E8; }
  .footer-bottom-inner a:hover{ text-decoration:underline; text-underline-offset:3px; }

  /* ---------- responsive ---------- */
  @media (max-width:1024px){
    :root{ --section-y:60px; }
    .hero{ padding:44px 0 56px; }
    .hero-grid{ grid-template-columns:1fr; gap:40px; }
    .hero-visual{ order:-1; }
    .hero-float{ left:14px; bottom:-16px; }
    .stats-band{ grid-template-columns:repeat(2,minmax(0,1fr)); row-gap:30px; }
    .stat-item:nth-child(3){ border-left:0; padding-left:0; }
    .cta-panel{ grid-template-columns:1fr; gap:34px; padding:38px 30px; }
    .footer-grid{ grid-template-columns:1fr 1fr; gap:32px; }
    .hot-tags{ display:none; }
  }
  @media (max-width:860px){
    .search-box{ display:none; }
    .header-channel{ display:none; }
    .nav-toggle{ display:inline-flex; }
    .grid-3{ grid-template-columns:1fr; }
    .step-side{ display:none; }
  }
  @media (max-width:768px){
    :root{ --section-y:48px; }
    .container{ padding:0 18px; }
    .header-top-inner{ height:64px; gap:14px; }
    .brand-name{ font-size:16px; }
    .grid-2{ grid-template-columns:1fr; }
    .stats-band{ padding:30px 22px; }
    .footer-grid{ grid-template-columns:1fr; }
    .hero-lead{ font-size:15.5px; }
    .cta-panel{ padding:32px 22px; border-radius:18px; }
    .form-card{ padding:22px 18px; }
    .card-body{ padding:20px; }
    .faq-item summary{ padding:16px 18px; font-size:15.5px; }
    .faq-answer{ padding:14px 18px 18px; }
  }
  @media (max-width:520px){
    .hero h1{ font-size:27px; }
    .btn{ width:100%; }
    .hero-actions .btn{ width:100%; }
    .stats-band{ grid-template-columns:1fr; }
    .stat-item{ border-left:0; padding-left:0; }
    .hero-float{ position:static; margin-top:14px; min-width:0; }
    .back-nav .btn{ width:100%; }
    .back-nav .divider{ display:none; }
  }

/* roulang page: article */
:root{
  --bg:#F6F9FB;
  --surface:#FFFFFF;
  --surface-2:#EEF6FA;
  --primary:#2B7FA8;
  --primary-dark:#1C5E80;
  --primary-light:#E4F2F9;
  --accent:#F08A24;
  --accent-dark:#C96A12;
  --data:#2FA98C;
  --ink:#16232E;
  --muted:#5F6F7C;
  --line:#E2EBF0;
  --radius:16px;
  --radius-sm:11px;
  --shadow-sm:0 8px 24px rgba(22,35,46,.06);
  --shadow-md:0 12px 32px rgba(22,35,46,.10);
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,box-shadow .2s ease,transform .2s ease}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;line-height:1.35}
p{margin:0}

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

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:0 8px 26px rgba(22,35,46,.08)}
.header-inner{display:flex;align-items:center;gap:20px;height:var(--header-h);transition:height .25s ease}
.site-header.is-stuck .header-inner{height:62px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(135deg,#2B7FA8,#1C5E80);
  color:#fff;font-weight:700;font-size:14px;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(28,94,128,.28);
}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.2px;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:2px;flex:1;min-width:0}
.nav-link{
  position:relative;
  padding:8px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--muted);white-space:nowrap;
}
.nav-link:hover{background:var(--primary-light);color:var(--primary-dark)}
.nav-link.active{color:var(--primary-dark);background:var(--primary-light);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  background:var(--primary);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex-shrink:0}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;width:196px;padding:0 12px;
  background:var(--surface-2);border:1px solid transparent;border-radius:var(--radius-sm);
  transition:width .25s ease,border-color .2s ease,background-color .2s ease;
}
.search-box:focus-within{width:240px;background:#fff;border-color:var(--primary);box-shadow:0 0 0 3px rgba(43,127,168,.14)}
.search-box svg{flex-shrink:0;color:#8AA3B2}
.search-box input{
  width:100%;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink);
}
.search-box input::placeholder{color:#93A6B3}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  border:1px solid transparent;cursor:pointer;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,box-shadow .2s ease,transform .15s ease,border-color .2s ease;
}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 18px rgba(240,138,36,.26)}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(201,106,18,.3)}
.btn-accent:active{transform:scale(.98)}
.btn-outline{background:#fff;border-color:var(--primary);color:var(--primary-dark)}
.btn-outline:hover{background:var(--primary-light)}
.btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.4);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.18)}
.btn:focus-visible,a:focus-visible,button:focus-visible,.search-box:focus-within{outline:none}
.btn:focus-visible{outline:3px solid rgba(43,127,168,.35);outline-offset:2px}

.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;border-radius:var(--radius-sm);
  background:var(--surface-2);border:1px solid var(--line);cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;margin:0 auto;background:var(--primary-dark);border-radius:2px;transition:transform .25s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- breadcrumb ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:22px 0 0;font-size:13.5px;color:var(--muted)}
.crumb a{color:var(--primary)}
.crumb a:hover{color:var(--primary-dark);text-decoration:underline;text-underline-offset:3px}
.crumb .sep{color:#B9C8D2}
.crumb .crumb-current{color:var(--muted);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article head ---------- */
.article-hero{
  margin-top:20px;padding:34px 36px 30px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:18px;box-shadow:var(--shadow-sm);
}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  background:var(--primary-light);color:var(--primary-dark);
  font-size:12.5px;font-weight:600;letter-spacing:.2px;
}
.article-title{
  margin:16px 0 14px;
  font-size:clamp(28px,3.4vw,42px);
  font-weight:700;letter-spacing:-.2px;line-height:1.28;color:var(--ink);
}
.article-lead{
  font-size:16.5px;line-height:1.85;color:var(--muted);
  max-width:820px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:20px;padding-top:18px;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C3D2DB}
.article-cover{margin:26px 0 0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- layout ---------- */
.layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;
  align-items:start;margin-top:32px;padding-bottom:8px;
}
.article-main{
  background:var(--surface);border:1px solid var(--line);border-radius:18px;
  padding:34px 38px;box-shadow:var(--shadow-sm);
}
.side-sticky{position:sticky;top:96px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 20px 18px;box-shadow:var(--shadow-sm);margin-bottom:20px;
}
.side-card h3{font-size:15.5px;font-weight:700;color:var(--ink);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--primary)}
.side-list{display:flex;flex-direction:column;gap:2px}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 10px;border-radius:10px;font-size:14.5px;color:var(--muted);
}
.side-list a:hover{background:var(--primary-light);color:var(--primary-dark)}
.side-list a span{color:#AFC2CE;font-size:13px}
.side-info{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--muted)}
.side-info div{display:flex;justify-content:space-between;gap:12px}
.side-info strong{color:var(--ink);font-weight:600}
.side-cta{background:var(--primary-dark);border-color:var(--primary-dark);color:#DCEBF4}
.side-cta h3{color:#fff}
.side-cta h3::before{background:var(--accent)}
.side-cta p{font-size:14px;line-height:1.8;color:#BBD4E2;margin-bottom:16px}
.side-cta .btn{width:100%}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{
  padding:5px 11px;border-radius:8px;background:var(--surface-2);
  font-size:13px;color:var(--muted);border:1px solid transparent;
}
.tag-cloud a:hover{background:#fff;border-color:var(--primary);color:var(--primary-dark)}

/* ---------- article body ---------- */
.article-body{font-size:16.5px;line-height:1.9;color:#233441;margin-top:8px}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 18px}
.article-body h2{
  font-size:24px;font-weight:700;color:var(--ink);
  margin:38px 0 14px;padding-left:14px;border-left:4px solid var(--primary);
}
.article-body h3{font-size:19px;font-weight:700;color:var(--primary-dark);margin:28px 0 10px}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin:22px 0 8px}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:8px}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--primary-dark)}
.article-body img{border-radius:14px;margin:20px 0;border:1px solid var(--line)}
.article-body blockquote{
  margin:22px 0;padding:16px 20px;
  background:var(--primary-light);border-left:4px solid var(--primary);
  border-radius:0 12px 12px 0;color:var(--primary-dark);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top}
.article-body th{background:var(--surface-2);font-weight:600;color:var(--ink)}
.article-body figure{margin:22px 0}
.article-body figcaption{font-size:13.5px;color:var(--muted);text-align:center;margin-top:8px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:30px 0}
.article-body code{background:var(--surface-2);border-radius:6px;padding:2px 6px;font-size:14.5px}

.article-body .empty-state{
  text-align:center;padding:54px 24px;
  background:var(--surface-2);border:1px dashed #C6DAE5;border-radius:16px;
}
.article-body .empty-state .empty-icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:16px;
  background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  color:var(--primary);font-size:22px;font-weight:700;
}
.article-body .empty-state h2{
  font-size:20px;font-weight:700;margin:0 0 8px;padding:0;border:0;color:var(--ink);
}
.article-body .empty-state p{font-size:15px;color:var(--muted);margin-bottom:22px}
.article-body .empty-state .empty-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}

.post-nav{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:34px;padding-top:22px;border-top:1px solid var(--line);
}
.post-nav a{font-size:14.5px;font-weight:600;color:var(--primary-dark)}
.post-nav a:hover{color:var(--accent-dark)}

/* ---------- related ---------- */
.section-head{margin:56px 0 22px}
.section-head h2{font-size:26px;font-weight:700;color:var(--ink)}
.section-head p{margin-top:8px;font-size:15px;color:var(--muted)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.related-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.related-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.related-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px}
.related-body h3{font-size:17.5px;font-weight:700;color:var(--ink);line-height:1.5}
.related-card:hover h3{color:var(--primary-dark)}
.related-body p{font-size:14.5px;color:var(--muted);line-height:1.75}

/* ---------- cta ---------- */
.cta-band{
  margin-top:64px;background:linear-gradient(135deg,#1C5E80,#2B7FA8);
  border-radius:20px;padding:42px 44px;color:#fff;
}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px}
.cta-band h2{font-size:26px;font-weight:700;color:#fff}
.cta-band p{margin-top:10px;font-size:15.5px;color:#CFE6F1;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- footer ---------- */
.site-footer{background:#16232E;color:#C6D3DC;margin-top:84px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-top:64px;padding-bottom:44px}
.footer-brand .brand-name{color:#fff}
.site-footer .brand-mark{background:linear-gradient(135deg,#2B7FA8,#3E9CC4)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:#93A5B1;max-width:330px}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col span{font-size:14px;color:#9FB0BC}
.footer-col a:hover{color:#8FC9E4}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1)}
.footer-bottom-inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding-top:20px;padding-bottom:20px;font-size:13px;color:#7E8F9B}
.footer-bottom a{color:#8FC9E4}
.footer-bottom a:hover{color:#fff}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .layout{grid-template-columns:minmax(0,1fr) 290px;gap:28px}
  .article-main{padding:28px 26px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:980px){
  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;z-index:80;
    width:280px;max-width:82vw;flex-direction:column;flex:0 0 auto;
    align-items:stretch;gap:6px;
    padding:96px 20px 28px;
    background:#fff;box-shadow:-14px 0 34px rgba(22,35,46,.16);
    transform:translateX(102%);transition:transform .3s ease;
    overflow-y:auto;
  }
  .main-nav.open{transform:translateX(0)}
  .nav-link{padding:12px 14px;font-size:16px;border-radius:12px}
  .nav-link.active::after{display:none}
  .search-box{display:none}
  .layout{grid-template-columns:minmax(0,1fr)}
  .side-sticky{position:static}
}
@media (max-width:768px){
  .container{padding-left:18px;padding-right:18px}
  .header-inner{height:64px;gap:12px}
  .brand-name{font-size:16.5px}
  .article-hero{padding:24px 20px 22px;border-radius:16px}
  .article-title{margin:14px 0 12px}
  .article-lead{font-size:15.5px}
  .article-main{padding:22px 20px;border-radius:16px}
  .article-body{font-size:16px}
  .article-body h2{font-size:21px;margin:30px 0 12px}
  .article-body h3{font-size:18px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .section-head{margin:44px 0 18px}
  .section-head h2{font-size:22px}
  .cta-band{padding:30px 24px;border-radius:16px;margin-top:52px}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-top:48px;padding-bottom:34px}
  .footer-bottom-inner{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .article-cover img{aspect-ratio:4/3}
  .crumb .crumb-current{max-width:200px}
  .btn{padding:0 18px}
}

/* roulang page: category2 */
:root{
    --bg:#F6F9FB;
    --surface:#FFFFFF;
    --surface-2:#EEF6FA;
    --primary:#2B7FA8;
    --primary-dark:#1C5E80;
    --primary-light:#E4F2F9;
    --accent:#F08A24;
    --accent-dark:#C96A12;
    --green:#2FA98C;
    --ink:#16232E;
    --muted:#5F6F7C;
    --line:#E2EBF0;
    --radius:16px;
    --radius-sm:10px;
    --shadow:0 8px 24px rgba(22,35,46,.06);
    --shadow-lg:0 12px 32px rgba(22,35,46,.10);
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  ul{list-style:none;margin:0;padding:0;}
  h1,h2,h3,h4,p{margin:0;}
  .container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;}
  section{scroll-margin-top:120px;}

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(255,255,255,.95);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .25s ease;
  }
  .site-header.is-stuck{box-shadow:0 6px 20px rgba(22,35,46,.08);}
  .header-inner{display:flex;align-items:center;gap:20px;height:74px;}
  .site-header.is-stuck .header-inner{height:62px;}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand-mark{
    width:36px;height:36px;border-radius:11px;
    background:linear-gradient(135deg,var(--primary),var(--primary-dark));
    color:#fff;display:flex;align-items:center;justify-content:center;
    font-size:14px;font-weight:700;letter-spacing:.02em;
  }
  .brand-name{font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap;letter-spacing:.01em;}
  .main-nav{display:flex;align-items:center;gap:2px;margin-left:6px;}
  .nav-link{
    position:relative;padding:9px 14px;border-radius:10px;
    font-size:15px;color:var(--muted);transition:color .2s,background .2s;
    white-space:nowrap;
  }
  .nav-link:hover{color:var(--primary-dark);background:var(--primary-light);}
  .nav-link.active{color:var(--primary-dark);font-weight:600;}
  .nav-link.active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;
    background:var(--primary);border-radius:2px;
  }
  .header-tools{margin-left:auto;display:flex;align-items:center;gap:12px;}
  .nav-search{
    display:flex;align-items:center;gap:8px;
    background:var(--surface-2);border:1px solid var(--line);
    border-radius:var(--radius-sm);padding:0 12px;height:42px;
    transition:border-color .2s,background .2s,width .25s ease;width:180px;
  }
  .nav-search:focus-within{border-color:var(--primary);background:#fff;width:230px;}
  .nav-search input{
    border:0;outline:0;background:transparent;font-size:14px;color:var(--ink);width:100%;
  }
  .nav-search svg{flex:0 0 16px;color:var(--muted);}
  .menu-toggle{
    display:none;width:42px;height:42px;border-radius:var(--radius-sm);
    border:1px solid var(--line);background:#fff;color:var(--primary-dark);
    align-items:center;justify-content:center;cursor:pointer;
  }
  .trend-bar{border-top:1px solid var(--line);background:#FBFDFE;}
  .trend-inner{display:flex;align-items:center;gap:10px;height:40px;overflow-x:auto;}
  .trend-label{font-size:13px;color:var(--muted);flex-shrink:0;}
  .trend-tag{
    font-size:13px;color:var(--primary-dark);background:var(--primary-light);
    border-radius:999px;padding:3px 12px;flex-shrink:0;transition:background .2s,color .2s;
  }
  .trend-tag:hover{background:var(--primary);color:#fff;}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;border-radius:var(--radius-sm);
    font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
    transition:background .2s,color .2s,border-color .2s,transform .12s,box-shadow .2s;
  }
  .btn:active{transform:scale(.98);}
  .btn:focus-visible{outline:3px solid rgba(43,127,168,.35);outline-offset:2px;}
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(240,138,36,.28);}
  .btn-primary:hover{background:var(--accent-dark);}
  .btn-outline{background:#fff;color:var(--primary-dark);border-color:var(--primary);}
  .btn-outline:hover{background:var(--primary-light);}
  .btn-ghost-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.55);}
  .btn-ghost-light:hover{background:rgba(255,255,255,.26);}
  .btn-sm{height:40px;padding:0 16px;font-size:14px;}

  /* ============ 窄横幅 ============ */
  .page-banner{position:relative;overflow:hidden;color:#fff;background:#123A4C;}
  .page-banner::before{
    content:"";position:absolute;inset:0;
    background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    opacity:.5;
  }
  .page-banner::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(105deg,rgba(14,36,49,.94) 0%,rgba(28,94,128,.78) 60%,rgba(43,127,168,.55) 100%);
  }
  .banner-inner{position:relative;z-index:2;padding:40px 0 46px;}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.72);margin-bottom:20px;}
  .breadcrumb a{color:rgba(255,255,255,.88);}
  .breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
  .breadcrumb .sep{color:rgba(255,255,255,.45);}
  .banner-tag{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;letter-spacing:.02em;color:#fff;
    background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
    border-radius:999px;padding:4px 14px;margin-bottom:18px;
  }
  .banner-inner h1{
    font-size:clamp(30px,3.4vw,44px);line-height:1.25;font-weight:700;letter-spacing:-.01em;
    margin-bottom:16px;
  }
  .banner-inner h1 span{color:#FFD9AE;}
  .banner-lead{max-width:760px;font-size:16px;color:rgba(255,255,255,.86);margin-bottom:26px;}
  .banner-actions{display:flex;flex-wrap:wrap;gap:14px;}
  .banner-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:28px;padding-top:20px;border-top:1px solid rgba(255,255,255,.2);}
  .banner-meta div{font-size:13.5px;color:rgba(255,255,255,.78);}
  .banner-meta strong{display:block;font-size:20px;color:#fff;font-weight:700;}

  /* ============ 板块通用 ============ */
  .section{padding:76px 0;}
  .section-tight{padding:56px 0;}
  .section-head{max-width:760px;margin-bottom:40px;}
  .eyebrow{
    display:inline-block;font-size:13px;font-weight:600;letter-spacing:.06em;
    color:var(--primary-dark);background:var(--primary-light);
    border-radius:6px;padding:4px 10px;margin-bottom:14px;
  }
  .section-head h2{font-size:clamp(24px,2.4vw,31px);line-height:1.35;font-weight:700;margin-bottom:14px;}
  .section-head p{color:var(--muted);font-size:15.5px;}
  .divider{height:1px;background:var(--line);border:0;margin:0;}

  /* ============ 概览要点条 ============ */
  .overview-strip{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    box-shadow:var(--shadow);padding:26px 28px;
    display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
    margin-top:-38px;position:relative;z-index:5;
  }
  .ov-item{border-left:2px solid var(--primary-light);padding-left:16px;}
  .ov-item strong{display:block;font-size:17px;margin-bottom:6px;}
  .ov-item span{font-size:14px;color:var(--muted);}

  /* ============ 时间线 ============ */
  .timeline{position:relative;margin-top:8px;}
  .timeline::before{
    content:"";position:absolute;left:23px;top:14px;bottom:26px;width:2px;
    background:linear-gradient(180deg,var(--primary) 0%,rgba(43,127,168,.18) 100%);
  }
  .step{position:relative;display:flex;gap:20px;padding-bottom:22px;}
  .step:last-child{padding-bottom:0;}
  .step-num{
    position:relative;z-index:2;flex:0 0 48px;width:48px;height:48px;border-radius:14px;
    background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);
    display:flex;align-items:center;justify-content:center;
    font-weight:700;font-size:16px;color:var(--primary-dark);
  }
  .step-body{
    flex:1;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    padding:20px 24px;box-shadow:var(--shadow);transition:box-shadow .25s,transform .25s,border-color .25s;
  }
  .step-body:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);border-color:#D3E5EE;}
  .step-body h3{font-size:19px;font-weight:600;margin-bottom:8px;}
  .step-body p{font-size:14.8px;color:var(--muted);}
  .step-points{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px;}
  .chip{
    font-size:13px;color:var(--primary-dark);background:var(--primary-light);
    border-radius:999px;padding:3px 12px;
  }
  .chip.gray{background:#F1F5F8;color:var(--muted);}

  /* ============ 数据带 ============ */
  .stats-band{background:linear-gradient(120deg,#16465D 0%,#1C5E80 55%,#2B7FA8 100%);color:#fff;}
  .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
  .stat{padding:38px 26px;border-right:1px solid rgba(255,255,255,.16);}
  .stat:last-child{border-right:0;}
  .stat strong{display:block;font-size:34px;font-weight:700;line-height:1.2;color:#fff;margin-bottom:8px;}
  .stat strong em{font-style:normal;font-size:16px;font-weight:600;color:#B7E5D8;margin-left:4px;}
  .stat span{font-size:14px;color:rgba(255,255,255,.78);}

  /* ============ 对比表 ============ */
  .compare-wrap{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    box-shadow:var(--shadow);overflow:hidden;
  }
  .table-scroll{overflow-x:auto;}
  table.compare{width:100%;min-width:660px;border-collapse:collapse;}
  table.compare th{
    text-align:left;font-size:14px;font-weight:600;color:var(--primary-dark);
    background:var(--primary-light);padding:15px 22px;border-bottom:1px solid var(--line);
  }
  table.compare th.th-risk{color:#9A5B12;background:#FDF1E2;}
  table.compare td{
    padding:16px 22px;font-size:14.6px;color:var(--muted);
    border-bottom:1px solid var(--line);vertical-align:top;
  }
  table.compare td:first-child{color:var(--ink);font-weight:600;}
  table.compare tbody tr:last-child td{border-bottom:0;}
  table.compare tbody tr:hover{background:#FAFDFF;}
  .mark-ok{color:var(--green);font-weight:700;margin-right:6px;}
  .mark-no{color:#C96A12;font-weight:700;margin-right:6px;}

  /* ============ 场景卡片 ============ */
  .cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;
    transition:box-shadow .25s,transform .25s;
  }
  .card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);}
  .card-cover{aspect-ratio:16/9;overflow:hidden;background:var(--surface-2);}
  .card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
  .card:hover .card-cover img{transform:scale(1.04);}
  .card-body{padding:22px 22px 24px;flex:1;display:flex;flex-direction:column;}
  .card-body h3{font-size:18.5px;font-weight:600;margin-bottom:10px;}
  .card-body p{font-size:14.6px;color:var(--muted);flex:1;}
  .card-link{
    margin-top:16px;font-size:14px;font-weight:600;color:var(--primary-dark);
    display:inline-flex;align-items:center;gap:6px;
  }
  .card-link:hover{color:var(--accent-dark);}
  .card-link svg{transition:transform .2s;}
  .card-link:hover svg{transform:translateX(3px);}

  /* ============ FAQ ============ */
  .faq-wrap{max-width:900px;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden;
  }
  .faq-item summary{
    list-style:none;cursor:pointer;padding:20px 24px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    font-size:16.5px;font-weight:600;color:var(--ink);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--primary-dark);}
  .faq-icon{
    flex:0 0 26px;width:26px;height:26px;border-radius:8px;
    background:var(--primary-light);color:var(--primary-dark);
    display:flex;align-items:center;justify-content:center;
    font-size:16px;line-height:1;transition:transform .25s ease,background .25s;
  }
  .faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--primary);color:#fff;}
  .faq-answer{padding:0 24px 22px;font-size:14.8px;color:var(--muted);border-top:1px solid var(--line);margin-top:0;padding-top:16px;}

  /* ============ CTA ============ */
  .cta-panel{
    background:linear-gradient(120deg,#153E52 0%,#1C5E80 60%,#2B7FA8 100%);
    color:#fff;border-radius:22px;padding:52px 48px;
    display:grid;grid-template-columns:1.35fr .9fr;gap:40px;align-items:center;
    box-shadow:0 18px 44px rgba(22,35,46,.14);
  }
  .cta-panel h2{font-size:clamp(23px,2.3vw,30px);font-weight:700;line-height:1.4;margin-bottom:14px;}
  .cta-panel p{color:rgba(255,255,255,.82);font-size:15.2px;max-width:620px;}
  .cta-side{
    background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);
    border-radius:16px;padding:24px;
  }
  .cta-side h3{font-size:17px;font-weight:600;margin-bottom:14px;}
  .cta-side li{font-size:14.4px;color:rgba(255,255,255,.86);padding:7px 0;border-bottom:1px dashed rgba(255,255,255,.2);}
  .cta-side li:last-child{border-bottom:0;}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--ink);color:#C9D6DF;margin-top:0;}
  .footer-grid{
    display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
    padding:64px 20px 44px;
  }
  .footer-brand .brand{margin-bottom:16px;}
  .footer-brand .brand-name{color:#fff;}
  .footer-brand p{font-size:14.2px;color:#93A6B3;max-width:340px;}
  .footer-col h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px;}
  .footer-col li{padding:6px 0;font-size:14.2px;color:#A9BAC6;}
  .footer-col a{color:#A9BAC6;transition:color .2s;}
  .footer-col a:hover{color:#7FD1E8;}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.1);}
  .footer-bottom-inner{
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    padding:20px;font-size:13.4px;color:#8B9DA9;
  }
  .footer-bottom-inner a{color:#7FD1E8;}
  .footer-bottom-inner a:hover{text-decoration:underline;text-underline-offset:3px;}

  /* ============ 弹层 ============ */
  .modal{position:fixed;inset:0;z-index:120;display:none;}
  .modal.open{display:block;}
  .modal-backdrop{position:absolute;inset:0;background:rgba(22,35,46,.48);}
  .modal-panel{
    position:relative;z-index:2;width:min(520px,calc(100% - 32px));
    margin:8vh auto 0;background:#fff;border-radius:20px;
    box-shadow:0 24px 60px rgba(22,35,46,.26);padding:30px 30px 26px;
    max-height:84vh;overflow-y:auto;
  }
  .modal-panel h3{font-size:20px;font-weight:700;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;
    border:1px solid var(--line);background:#fff;color:var(--muted);cursor:pointer;
    display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;
  }
  .modal-close:hover{background:var(--surface-2);color:var(--primary-dark);}
  .field{margin-bottom:16px;}
  .field label{display:block;font-size:14px;font-weight:600;margin-bottom:7px;}
  .field input,.field textarea{
    width:100%;border:1px solid var(--line);border-radius:var(--radius-sm);
    padding:11px 14px;font-size:14.6px;color:var(--ink);background:#FBFDFE;
    outline:0;transition:border-color .2s,background .2s;
  }
  .field input:focus,.field textarea:focus{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(43,127,168,.14);}
  .field textarea{min-height:92px;resize:vertical;}
  .privacy-check{display:flex;align-items:flex-start;gap:10px;font-size:13.6px;color:var(--muted);margin:4px 0 18px;}
  .privacy-check input{margin-top:4px;accent-color:var(--primary);}
  .modal-note{font-size:12.8px;color:#8595A1;margin-top:12px;line-height:1.7;}

  /* ============ 响应式 ============ */
  @media (max-width:1024px){
    .main-nav{
      position:absolute;top:100%;left:0;right:0;display:none;
      flex-direction:column;align-items:stretch;gap:2px;margin:0;
      background:#fff;padding:12px 16px 16px;
      border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);
    }
    .main-nav.open{display:flex;}
    .nav-link{padding:12px 14px;}
    .nav-link.active::after{left:14px;right:auto;width:36px;bottom:8px;}
    .nav-search{display:none;}
    .menu-toggle{display:inline-flex;}
    .overview-strip{grid-template-columns:repeat(2,1fr);}
    .cards-3{grid-template-columns:repeat(2,1fr);}
    .stats-grid{grid-template-columns:repeat(2,1fr);}
    .stat{border-right:0;border-bottom:1px solid rgba(255,255,255,.16);}
    .cta-panel{grid-template-columns:1fr;padding:40px 32px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  }
  @media (max-width:768px){
    .container{padding:0 16px;}
    .header-inner{height:64px;gap:12px;}
    .site-header.is-stuck .header-inner{height:58px;}
    .brand-name{font-size:15.5px;}
    .trend-bar{display:none;}
    .section{padding:52px 0;}
    .section-tight{padding:42px 0;}
    .banner-inner{padding:28px 0 34px;}
    .overview-strip{grid-template-columns:1fr;margin-top:-24px;padding:22px;}
    .step{gap:14px;}
    .step-num{flex:0 0 42px;width:42px;height:42px;border-radius:12px;font-size:15px;}
    .timeline::before{left:20px;}
    .step-body{padding:18px 18px;}
    .cards-3{grid-template-columns:1fr;}
    .stats-grid{grid-template-columns:1fr;}
    .stat{padding:26px 20px;}
    .stat strong{font-size:28px;}
    .cta-panel{padding:32px 22px;border-radius:18px;}
    .footer-grid{grid-template-columns:1fr;gap:28px;padding:44px 16px 32px;}
    .modal-panel{width:100%;max-width:none;margin:0;border-radius:0;min-height:100%;max-height:100%;padding:26px 20px;}
  }
  @media (max-width:520px){
    .banner-actions{gap:10px;}
    .banner-actions .btn{width:100%;}
    .faq-item summary{padding:16px 18px;font-size:15.6px;}
    .faq-answer{padding:0 18px 18px;padding-top:14px;}
  }

/* roulang page: category3 */
:root{
  --bg:#F6F9FB; --surface:#FFFFFF; --surface-2:#EEF6FA;
  --brand:#2B7FA8; --brand-deep:#1C5E80; --brand-soft:#E4F2F9;
  --accent:#F08A24; --accent-deep:#C96A12; --green:#2FA98C;
  --ink:#16232E; --muted:#5F6F7C; --line:#E2EBF0;
  --radius:16px; --radius-sm:12px; --radius-lg:20px;
  --shadow:0 8px 24px rgba(22,35,46,.06);
  --shadow-hover:0 12px 32px rgba(22,35,46,.10);
  --container:1240px;
  --space-section:88px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px; line-height:1.75; -webkit-font-smoothing:antialiased;
}
img{max-width:100%; display:block;}
a{color:inherit; text-decoration:none;}
button{font-family:inherit; cursor:pointer;}
input,textarea,select{font-family:inherit; font-size:15px;}
h1,h2,h3,h4{margin:0; line-height:1.3; font-weight:700; letter-spacing:0;}
p{margin:0;}
ul{margin:0; padding:0; list-style:none;}
:focus-visible{outline:3px solid rgba(43,127,168,.35); outline-offset:2px; border-radius:8px;}

.container{width:100%; max-width:var(--container); margin:0 auto; padding:0 24px;}
.section{padding:var(--space-section) 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:760px; margin-bottom:40px;}
.section-kicker{
  display:inline-flex; align-items:center; gap:8px; font-size:13px; font-weight:600;
  color:var(--brand-deep); background:var(--brand-soft); border-radius:999px;
  padding:6px 14px; margin-bottom:16px;
}
.section-title{font-size:clamp(24px,2.4vw,32px); margin-bottom:14px;}
.section-desc{color:var(--muted); font-size:15.5px;}
.eyebrow-line{width:44px; height:3px; background:var(--accent); border-radius:3px; margin-bottom:18px;}

/* ============ header ============ */
.site-header{
  position:sticky; top:0; z-index:60; background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line); transition:box-shadow .25s ease, padding .25s ease;
}
.site-header.is-stuck{box-shadow:0 6px 22px rgba(22,35,46,.08);}
.header-inner{padding-top:14px; padding-bottom:0;}
.header-top{display:flex; align-items:center; justify-content:space-between; gap:20px; min-height:52px;}
.brand{display:inline-flex; align-items:center; gap:10px;}
.brand-mark{
  width:38px; height:38px; border-radius:11px; display:grid; place-items:center;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#fff; font-weight:700; font-size:15px; letter-spacing:.5px;
}
.brand-name{font-size:19px; font-weight:700; color:var(--ink);}
.header-tools{display:flex; align-items:center; gap:12px;}
.search-box{
  display:flex; align-items:center; gap:8px; width:180px; height:40px;
  border:1px solid var(--line); border-radius:10px; background:var(--surface);
  padding:0 12px; transition:width .25s ease, border-color .2s ease, box-shadow .2s ease;
}
.search-box:focus-within{width:260px; border-color:var(--brand); box-shadow:0 0 0 4px rgba(43,127,168,.12);}
.search-box input{border:0; outline:0; background:transparent; width:100%; color:var(--ink);}
.search-box input::placeholder{color:#9AA9B4;}
.search-icon{color:var(--muted); flex:none;}
.hot-tag{
  font-size:13px; color:var(--brand-deep); background:var(--brand-soft);
  border-radius:999px; padding:6px 12px; font-weight:600; transition:background .2s ease;
}
.hot-tag:hover{background:#D5EAF5;}
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:46px; padding:0 22px; border-radius:11px; font-size:15px; font-weight:600;
  border:1px solid transparent; transition:all .2s ease; white-space:nowrap;
}
.btn-sm{height:40px; padding:0 16px; font-size:14px;}
.btn-primary{background:var(--accent); color:#fff; box-shadow:0 6px 16px rgba(240,138,36,.28);}
.btn-primary:hover{background:var(--accent-deep); transform:translateY(-1px);}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{background:#fff; color:var(--brand-deep); border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft); transform:translateY(-1px);}
.btn-ghost:active{transform:scale(.98);}
.menu-toggle{
  display:none; width:42px; height:42px; border-radius:11px; border:1px solid var(--line);
  background:#fff; color:var(--ink); align-items:center; justify-content:center;
}
.main-nav{
  display:flex; align-items:center; gap:6px; margin-top:6px; overflow-x:auto;
  scrollbar-width:none; border-top:1px solid transparent;
}
.main-nav::-webkit-scrollbar{display:none;}
.nav-link{
  position:relative; padding:14px 16px; font-size:15px; font-weight:500; color:var(--muted);
  white-space:nowrap; transition:color .2s ease;
}
.nav-link:hover{color:var(--brand-deep);}
.nav-link::after{
  content:''; position:absolute; left:16px; right:16px; bottom:4px; height:2px;
  background:var(--brand); border-radius:2px; transform:scaleX(0); transition:transform .22s ease;
}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand-deep); font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}

/* ============ hero ============ */
.hero{position:relative; overflow:hidden; background:
  radial-gradient(circle at 88% 12%, rgba(43,127,168,.10), transparent 42%),
  radial-gradient(circle at 4% 92%, rgba(240,138,36,.08), transparent 40%),
  var(--surface);}
.hero::before{
  content:''; position:absolute; inset:0;
  background-image:radial-gradient(rgba(43,127,168,.14) 1px, transparent 1px);
  background-size:22px 22px; opacity:.35; pointer-events:none;
}
.hero-inner{position:relative; padding:56px 0 84px;}
.breadcrumb{display:flex; align-items:center; gap:8px; font-size:13.5px; color:var(--muted); margin-bottom:28px; flex-wrap:wrap;}
.breadcrumb a{color:var(--brand); font-weight:500;}
.breadcrumb a:hover{text-decoration:underline; text-underline-offset:3px;}
.breadcrumb span.sep{color:#B7C4CD;}
.hero-grid{display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center;}
.hero h1{font-size:clamp(30px,3.6vw,46px); margin-bottom:20px;}
.hero h1 em{font-style:normal; color:var(--brand-deep);}
.hero-sub{font-size:17px; color:var(--muted); max-width:560px; margin-bottom:30px;}
.hero-actions{display:flex; gap:14px; flex-wrap:wrap; margin-bottom:34px;}
.trust-badges{display:flex; gap:12px; flex-wrap:wrap;}
.trust-badge{
  display:inline-flex; align-items:center; gap:8px; font-size:13.5px; color:var(--brand-deep);
  background:#fff; border:1px solid var(--line); border-radius:999px; padding:8px 14px;
  box-shadow:0 4px 12px rgba(22,35,46,.04);
}
.trust-badge i{width:7px; height:7px; border-radius:50%; background:var(--green); display:inline-block;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%; aspect-ratio:4/3; object-fit:cover; border-radius:var(--radius-lg);
  border:1px solid var(--line); box-shadow:var(--shadow);
}
.hero-data-card{
  position:absolute; left:-22px; bottom:-24px; background:#fff; border:1px solid var(--line);
  border-radius:var(--radius); padding:18px 20px; box-shadow:var(--shadow-hover); min-width:200px;
}
.hero-data-card strong{display:block; font-size:26px; color:var(--brand-deep); line-height:1.2;}
.hero-data-card span{font-size:13px; color:var(--muted);}

/* ============ 问题导引 ============ */
.question-grid{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:22px;}
.q-card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
  padding:26px 26px 24px; box-shadow:var(--shadow); transition:all .24s ease; position:relative;
}
.q-card:hover{transform:translateY(-3px); box-shadow:var(--shadow-hover); border-color:#CFE2EC;}
.q-index{
  display:inline-grid; place-items:center; width:34px; height:34px; border-radius:10px;
  background:var(--brand-soft); color:var(--brand-deep); font-weight:700; font-size:14px; margin-bottom:16px;
}
.q-card h3{font-size:18px; margin-bottom:10px;}
.q-card p{color:var(--muted); font-size:14.5px;}
.q-card:nth-child(2){background:var(--surface-2);}
.q-card:nth-child(3){border-left:3px solid var(--accent);}

/* ============ 不对称双栏 ============ */
.split{display:grid; grid-template-columns:minmax(0,1.65fr) minmax(0,1fr); gap:36px; align-items:start;}
.panel{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:34px; box-shadow:var(--shadow);
}
.step-list{counter-reset:step; margin-top:8px;}
.step-item{
  display:grid; grid-template-columns:52px 1fr; gap:18px; padding:20px 0;
  border-bottom:1px dashed var(--line);
}
.step-item:last-child{border-bottom:0; padding-bottom:0;}
.step-num{
  counter-increment:step; width:44px; height:44px; border-radius:12px; display:grid; place-items:center;
  background:var(--brand-soft); color:var(--brand-deep); font-weight:700; font-size:16px;
}
.step-num::before{content:counter(step,decimal-leading-zero);}
.step-item h3{font-size:17.5px; margin-bottom:6px;}
.step-item p{font-size:14.5px; color:var(--muted);}
.side-stack{display:flex; flex-direction:column; gap:22px;}
.tag-cloud{display:flex; flex-wrap:wrap; gap:10px;}
.tag{
  font-size:13.5px; padding:8px 14px; border-radius:999px; background:#F1F5F8; color:#465865;
  border:1px solid transparent; transition:all .2s ease;
}
.tag:hover{background:var(--brand-soft); color:var(--brand-deep); border-color:#CFE2EC;}
.tag.hot{background:var(--brand-soft); color:var(--brand-deep); font-weight:600;}
.tip-card{
  background:var(--surface-2); border:1px solid #D7E8F1; border-radius:var(--radius);
  padding:24px; box-shadow:none;
}
.tip-card h3{font-size:17px; margin-bottom:10px; color:var(--brand-deep);}
.tip-card p{font-size:14.5px; color:var(--muted);}

/* ============ 玩法卡片 ============ */
.play-grid{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:24px;}
.play-card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
  overflow:hidden; box-shadow:var(--shadow); display:flex; flex-direction:column;
  transition:all .24s ease;
}
.play-card:hover{transform:translateY(-4px); box-shadow:var(--shadow-hover);}
.play-card img{width:100%; aspect-ratio:16/9; object-fit:cover;}
.play-body{padding:22px 22px 24px; display:flex; flex-direction:column; gap:10px; flex:1;}
.play-body h3{font-size:18px;}
.play-body p{font-size:14.5px; color:var(--muted); flex:1;}
.badge{
  display:inline-flex; align-items:center; gap:6px; font-size:12.5px; font-weight:600;
  padding:5px 11px; border-radius:999px; background:var(--brand-soft); color:var(--brand-deep);
  width:fit-content;
}
.badge-green{background:rgba(47,169,140,.12); color:#1F7C67;}

/* ============ 数据带 ============ */
.data-band{background:var(--brand-deep); color:#fff; border-radius:var(--radius-lg); padding:44px 40px;}
.data-grid{display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:28px;}
.data-item{border-left:1px solid rgba(255,255,255,.18); padding-left:22px;}
.data-item:first-child{border-left:0; padding-left:0;}
.data-item strong{display:block; font-size:32px; font-weight:700; color:#fff; line-height:1.2;}
.data-item strong em{font-style:normal; font-size:16px; color:#8FD9C4; margin-left:4px;}
.data-item span{font-size:13.5px; color:rgba(255,255,255,.72);}

/* ============ 资讯列表 ============ */
.news-layout{display:grid; grid-template-columns:minmax(0,1.25fr) minmax(0,1fr); gap:26px; align-items:start;}
.feature-news{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius-lg);
  overflow:hidden; box-shadow:var(--shadow); transition:all .24s ease;
}
.feature-news:hover{box-shadow:var(--shadow-hover); transform:translateY(-3px);}
.feature-news img{width:100%; aspect-ratio:16/9; object-fit:cover;}
.feature-body{padding:26px;}
.feature-body h3{font-size:21px; margin:12px 0 10px;}
.feature-body p{font-size:14.8px; color:var(--muted); margin-bottom:16px;}
.meta-row{display:flex; align-items:center; gap:14px; font-size:13px; color:var(--muted); flex-wrap:wrap;}
.news-list{display:flex; flex-direction:column; gap:14px;}
.news-row{
  display:flex; gap:16px; background:var(--surface); border:1px solid var(--line);
  border-radius:var(--radius); padding:14px; box-shadow:var(--shadow); transition:all .22s ease;
}
.news-row:hover{transform:translateX(3px); border-color:#CFE2EC; box-shadow:var(--shadow-hover);}
.news-row img{width:140px; height:94px; object-fit:cover; border-radius:10px; flex:none;}
.news-row h4{font-size:16px; margin-bottom:6px;}
.news-row p{font-size:13.5px; color:var(--muted); margin-bottom:8px; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;}
.more-link{display:inline-flex; align-items:center; gap:6px; color:var(--brand); font-weight:600; font-size:14.5px;}
.more-link:hover{color:var(--brand-deep); text-decoration:underline; text-underline-offset:4px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px; margin:0 auto;}
.faq-item{background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); margin-bottom:14px; overflow:hidden; box-shadow:var(--shadow);}
.faq-q{
  width:100%; background:transparent; border:0; text-align:left; padding:22px 24px;
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  font-size:16.5px; font-weight:600; color:var(--ink);
}
.faq-q:hover{color:var(--brand-deep);}
.faq-plus{position:relative; width:20px; height:20px; flex:none;}
.faq-plus::before,.faq-plus::after{
  content:''; position:absolute; background:var(--brand); border-radius:2px; transition:transform .25s ease;
}
.faq-plus::before{left:0; top:9px; width:20px; height:2px;}
.faq-plus::after{left:9px; top:0; width:2px; height:20px;}
.faq-item.open .faq-plus::after{transform:rotate(90deg); opacity:0;}
.faq-a{max-height:0; overflow:hidden; transition:max-height .3s ease;}
.faq-a p{padding:0 24px 22px; font-size:14.8px; color:var(--muted); border-top:1px solid var(--line); padding-top:16px;}

/* ============ CTA ============ */
.cta-panel{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:48px; box-shadow:var(--shadow); display:grid; grid-template-columns:1.4fr 1fr;
  gap:36px; align-items:center;
}
.cta-panel h2{font-size:clamp(23px,2.3vw,30px); margin-bottom:14px;}
.cta-panel p{color:var(--muted); font-size:15px; margin-bottom:24px;}
.cta-actions{display:flex; gap:14px; flex-wrap:wrap;}
.cta-meta{background:var(--surface-2); border:1px solid #D7E8F1; border-radius:var(--radius); padding:24px;}
.cta-meta li{display:flex; gap:10px; font-size:14.5px; color:#465865; padding:9px 0; border-bottom:1px dashed #CBDDE7;}
.cta-meta li:last-child{border-bottom:0;}
.cta-meta li::before{content:''; width:8px; height:8px; border-radius:50%; background:var(--green); flex:none; margin-top:8px;}

/* ============ footer ============ */
.site-footer{background:var(--ink); color:#C9D6DF; margin-top:96px;}
.footer-grid{
  display:grid; grid-template-columns:1.6fr 1fr 1fr 1.1fr; gap:36px; padding:64px 24px 44px;
}
.site-footer .brand-name{color:#fff;}
.site-footer .brand-mark{background:linear-gradient(140deg,#2B7FA8,#12506E);}
.footer-brand p{font-size:14px; color:#93A4B0; margin-top:16px; max-width:340px; line-height:1.8;}
.footer-col h4{color:#fff; font-size:15.5px; margin-bottom:18px;}
.footer-col li{margin-bottom:10px; font-size:14px;}
.footer-col a{color:#B6C6D1; transition:color .2s ease;}
.footer-col a:hover{color:var(--accent);}
.footer-col span{color:#93A4B0;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.10);}
.footer-bottom-inner{
  display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
  padding:20px 24px; font-size:13.5px; color:#8FA0AC;
}
.footer-bottom-inner a{color:#B6C6D1;}
.footer-bottom-inner a:hover{color:var(--accent);}

/* ============ modal ============ */
.modal-mask{
  position:fixed; inset:0; background:rgba(22,35,46,.48); z-index:100;
  display:none; align-items:center; justify-content:center; padding:24px;
}
.modal-mask.show{display:flex;}
.modal-box{
  background:#fff; border-radius:var(--radius-lg); width:100%; max-width:540px;
  padding:32px; box-shadow:0 24px 60px rgba(22,35,46,.28); max-height:92vh; overflow:auto;
  animation:pop .22s ease;
}
@keyframes pop{from{opacity:0; transform:translateY(12px);} to{opacity:1; transform:none;}}
.modal-box h3{font-size:21px; margin-bottom:8px;}
.modal-box .modal-sub{font-size:14px; color:var(--muted); margin-bottom:22px;}
.field{margin-bottom:16px;}
.field label{display:block; font-size:13.5px; font-weight:600; margin-bottom:7px; color:#3C4C58;}
.field input[type=text],.field input[type=tel],.field textarea{
  width:100%; border:1px solid var(--line); border-radius:10px; padding:12px 14px;
  background:#FBFDFE; color:var(--ink); transition:border-color .2s ease, box-shadow .2s ease;
}
.field input:focus,.field textarea:focus{
  outline:0; border-color:var(--brand); box-shadow:0 0 0 4px rgba(43,127,168,.12); background:#fff;
}
.field textarea{resize:vertical; min-height:92px;}
.check-row{display:flex; gap:10px; align-items:flex-start; font-size:13px; color:var(--muted); margin:6px 0 18px;}
.check-row input{margin-top:4px; flex:none; width:16px; height:16px; accent-color:#2B7FA8;}
.modal-note{font-size:12.5px; color:#8B9AA5; margin-top:12px; line-height:1.7;}
.modal-close{
  position:absolute; top:18px; right:18px; width:34px; height:34px; border-radius:10px;
  border:1px solid var(--line); background:#fff; color:var(--muted); display:grid; place-items:center;
}
.modal-close:hover{color:var(--brand-deep); border-color:#CFE2EC;}
.modal-inner{position:relative;}

/* ============ responsive ============ */
@media (max-width:1024px){
  :root{--space-section:68px;}
  .hero-grid{grid-template-columns:1fr; gap:40px;}
  .hero-visual{order:-1;}
  .hero-data-card{left:16px; bottom:-18px;}
  .split{grid-template-columns:1fr;}
  .play-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .data-grid{grid-template-columns:repeat(2,minmax(0,1fr)); row-gap:32px;}
  .data-item:nth-child(3){border-left:0; padding-left:0;}
  .news-layout{grid-template-columns:1fr;}
  .cta-panel{grid-template-columns:1fr; padding:36px;}
  .footer-grid{grid-template-columns:1fr 1fr; gap:32px;}
}
@media (max-width:768px){
  .search-box{display:none;}
  .hot-tag{display:none;}
  .menu-toggle{display:inline-flex;}
  .main-nav{
    display:none; flex-direction:column; align-items:stretch; gap:0; margin-top:12px;
    border-top:1px solid var(--line); padding-bottom:12px;
  }
  .main-nav.open{display:flex;}
  .nav-link{padding:14px 4px; border-bottom:1px dashed var(--line);}
  .nav-link::after{display:none;}
  .nav-link.active{color:var(--brand-deep); background:var(--brand-soft); border-radius:10px; padding-left:12px;}
  .question-grid{grid-template-columns:1fr;}
  .play-grid{grid-template-columns:1fr;}
  .panel{padding:26px;}
  .data-band{padding:32px 24px;}
  .data-grid{grid-template-columns:1fr; gap:22px;}
  .data-item{border-left:0; padding-left:0; border-bottom:1px dashed rgba(255,255,255,.18); padding-bottom:18px;}
  .data-item:last-child{border-bottom:0; padding-bottom:0;}
  .news-row{flex-direction:column;}
  .news-row img{width:100%; height:170px;}
  .cta-panel{padding:28px;}
  .footer-grid{grid-template-columns:1fr; padding:48px 24px 32px;}
  .footer-bottom-inner{justify-content:flex-start;}
  .modal-box{padding:24px; max-width:100%; height:100%; max-height:100%; border-radius:0;}
  .modal-mask{padding:0;}
  .hero-inner{padding:36px 0 64px;}
  .hero-data-card{position:static; margin-top:16px;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .brand-name{font-size:17px;}
  .hero-actions .btn,.cta-actions .btn{width:100%;}
  .trust-badges{gap:8px;}
  .trust-badge{font-size:12.5px; padding:7px 12px;}
}