/* roulang page: index */
:root{
  --c-primary:#1F63D6;
  --c-primary-600:#1750B0;
  --c-primary-050:#EAF2FE;
  --c-primary-100:#D6E6FC;
  --c-accent:#F2994A;
  --c-accent-600:#D97F2B;
  --c-accent-050:#FEF1E4;
  --c-ok:#17B08C;
  --c-ok-050:#E6F8F4;
  --c-warn:#D64545;
  --c-warn-050:#FCEBEB;
  --c-bg:#F4F7FB;
  --c-card:#FFFFFF;
  --c-line:#E4EBF4;
  --c-line-2:#EDF2F8;
  --c-text:#1C2A3A;
  --c-text-2:#5C7089;
  --c-text-3:#8A9BB0;
  --c-footer:#16283F;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,52,92,.06);
  --sh-2:0 8px 24px rgba(23,52,92,.08);
  --sh-3:0 14px 32px rgba(23,52,92,.12);
  --side-w:240px;
  --t-fast:180ms ease;
  --t-base:240ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,table{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t-fast);}
a:hover{color:var(--c-primary-600);}
img{max-width:100%;display:block;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--c-text);}
[id]{scroll-margin-top:24px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}

/* ---------------- 左侧 App Shell ---------------- */
.app-side{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:#fff;border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;
  padding:22px 16px 18px;z-index:60;
}
.side-brand{padding:0 4px 20px;border-bottom:1px solid var(--c-line-2);}
.brand-link{display:flex;align-items:center;gap:10px;color:var(--c-text);}
.brand-link:hover{color:var(--c-text);}
.brand-mark{
  flex:0 0 auto;width:38px;height:38px;border-radius:11px;
  background:linear-gradient(140deg,var(--c-primary),#3E86F0);
  color:#fff;font-size:18px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(31,99,214,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.brand-main{font-size:16px;font-weight:700;letter-spacing:.5px;}
.brand-sub{font-size:12px;color:var(--c-text-3);letter-spacing:.2px;white-space:nowrap;}
.side-menu{display:flex;flex-direction:column;gap:6px;padding:18px 0;flex:1;}
.side-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:10px;
  color:var(--c-text-2);font-size:15px;font-weight:500;
  transition:background var(--t-fast),color var(--t-fast);
}
.side-item i{width:20px;text-align:center;font-size:15px;}
.side-item:hover{background:var(--c-primary-050);color:var(--c-primary);}
.side-item.is-active{background:var(--c-primary-050);color:var(--c-primary);font-weight:600;}
.side-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:3px;background:var(--c-primary);
}
.side-item:focus-visible{outline:none;box-shadow:0 0 0 3px var(--c-primary-050);}
.side-foot{border-top:1px solid var(--c-line-2);padding-top:14px;display:flex;flex-direction:column;gap:10px;}
.side-contact{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);padding:0 4px;}
.side-contact:hover{color:var(--c-primary);}

/* ---------------- 移动端顶栏与抽屉 ---------------- */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:80;
  background:rgba(255,255,255,.96);backdrop-filter:blur(6px);
  border-bottom:1px solid var(--c-line);
  align-items:center;gap:10px;padding:0 14px;
}
.mob-toggle{
  width:40px;height:40px;border-radius:10px;color:var(--c-text-2);
  display:flex;align-items:center;justify-content:center;font-size:17px;
  transition:background var(--t-fast),color var(--t-fast);
}
.mob-toggle:hover{background:var(--c-primary-050);color:var(--c-primary);}
.mob-brand{
  flex:1;font-size:14px;font-weight:700;color:var(--c-text);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.mob-brand:hover{color:var(--c-text);}
.drawer-mask{
  display:none;position:fixed;inset:0;z-index:55;background:rgba(16,32,54,.42);
  opacity:0;transition:opacity var(--t-base);
}
body.drawer-open .drawer-mask{display:block;opacity:1;}
body.drawer-open{overflow:hidden;}

/* ---------------- 主区域 ---------------- */
.app-main{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column;}
.page-body{flex:1;}

/* ---------------- 按钮 ---------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:15px;font-weight:600;line-height:1;
  white-space:nowrap;transition:all var(--t-fast);
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 4px 14px rgba(31,99,214,.24);}
.btn-primary:hover{background:var(--c-primary-600);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(31,99,214,.3);}
.btn-primary:focus-visible{outline:none;box-shadow:0 0 0 3px var(--c-primary-050),0 10px 24px rgba(31,99,214,.3);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary-100);}
.btn-ghost:hover{background:var(--c-primary-050);color:var(--c-primary-600);border-color:var(--c-primary);transform:translateY(-1px);}
.btn-ghost:focus-visible{outline:none;box-shadow:0 0 0 3px var(--c-primary-050);}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 4px 14px rgba(242,153,74,.3);}
.btn-accent:hover{background:var(--c-accent-600);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(242,153,74,.34);}
.btn-accent:focus-visible{outline:none;box-shadow:0 0 0 3px var(--c-accent-050);}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-xs{height:34px;padding:0 14px;font-size:13px;}
.btn-block{width:100%;height:48px;}

/* ---------------- 徽章与标签 ---------------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 11px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1;white-space:nowrap;
}
.badge-cat{background:var(--c-primary-050);color:var(--c-primary);}
.badge-plan{background:var(--c-accent-050);color:var(--c-accent-600);}
.badge-ok{background:var(--c-ok-050);color:var(--c-ok);}
.badge-soft{background:#F1F5FA;color:var(--c-text-2);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------------- 板块通用 ---------------- */
.section{padding:72px 0;}
.section-alt{background:#fff;}
.section-alt .step-card{box-shadow:var(--sh-1);}
.sec-head{max-width:780px;margin-bottom:38px;}
.sec-head h2{font-size:28px;line-height:1.35;font-weight:700;letter-spacing:-.2px;}
.sec-head p{margin-top:10px;color:var(--c-text-2);font-size:16px;}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}
.more-link{font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:6px;white-space:nowrap;}
.more-link i{transition:transform var(--t-fast);}
.more-link:hover i{transform:translateX(3px);}

/* ---------------- Hero ---------------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#EAF2FE 0%,#F4F7FB 100%);
  padding:64px 0 68px;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(31,99,214,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(31,99,214,.055) 1px,transparent 1px);
  background-size:48px 48px;
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--c-primary-100);color:var(--c-primary);
  height:30px;padding:0 14px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;
}
.hero h1{
  margin-top:20px;font-size:40px;line-height:1.35;font-weight:700;letter-spacing:-.5px;
}
.hero-sub{margin-top:16px;font-size:17px;color:var(--c-text-2);max-width:560px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-metrics{
  display:flex;flex-wrap:wrap;gap:40px;margin-top:36px;padding-top:24px;
  border-top:1px solid var(--c-line);
}
.hero-metrics li{display:flex;flex-direction:column;}
.hero-metrics b{font-size:28px;line-height:1.2;color:var(--c-primary);font-variant-numeric:tabular-nums;}
.hero-metrics span{font-size:13px;color:var(--c-text-3);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;height:420px;object-fit:cover;
  border-radius:18px;box-shadow:var(--sh-3);
}
.hero-float{
  position:absolute;left:-18px;bottom:26px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);padding:14px 18px;display:flex;align-items:center;gap:12px;
  max-width:280px;
}
.hero-float .dot{
  width:9px;height:9px;border-radius:50%;background:var(--c-ok);flex:0 0 auto;
  box-shadow:0 0 0 4px var(--c-ok-050);
}
.hero-float b{display:block;font-size:14px;font-weight:600;line-height:1.4;}
.hero-float span{display:block;font-size:12px;color:var(--c-text-3);line-height:1.5;}

/* ---------------- 步骤卡 ---------------- */
.step-card{
  height:100%;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 24px 24px;box-shadow:var(--sh-2);
  transition:transform var(--t-base),box-shadow var(--t-base);
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:50%;
  background:var(--c-primary-050);color:var(--c-primary);
  font-size:16px;font-weight:700;
}
.step-card h3{margin-top:16px;font-size:18px;font-weight:600;line-height:1.45;}
.step-card p{margin-top:10px;font-size:14px;color:var(--c-text-2);}
.step-list{margin-top:14px;display:flex;flex-direction:column;gap:6px;}
.step-list li{position:relative;padding-left:16px;font-size:13px;color:var(--c-text-3);}
.step-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;
  border-radius:2px;background:var(--c-primary-100);
}

/* ---------------- 资讯卡片 ---------------- */
.news-card{
  height:100%;display:flex;flex-direction:column;
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-2);
  transition:transform var(--t-base),box-shadow var(--t-base);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);}
.news-cover{display:block;overflow:hidden;aspect-ratio:16/9;background:#E9EFF7;}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform var(--t-base);}
.news-card:hover .news-cover img{transform:scale(1.03);}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.news-body h3{margin-top:12px;font-size:18px;font-weight:600;line-height:1.5;}
.news-body h3 a{color:var(--c-text);}
.news-body h3 a:hover{color:var(--c-primary);}
.news-excerpt{
  margin-top:10px;font-size:14px;color:var(--c-text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--c-text-3);font-variant-numeric:tabular-nums;
}
.read-more{font-size:13px;font-weight:600;display:inline-flex;align-items:center;gap:5px;}
.read-more i{transition:transform var(--t-fast);}
.read-more:hover i{transform:translateX(3px);}
.empty-state{
  background:#fff;border:1px dashed var(--c-line);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;
}
.empty-graph{
  width:64px;height:64px;margin:0 auto 16px;border-radius:50%;
  background:var(--c-primary-050);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:24px;
}
.empty-state p{color:var(--c-text-3);font-size:15px;}

/* ---------------- 权益阶梯 ---------------- */
.ladder{display:flex;flex-direction:column;gap:16px;}
.ladder-item{
  display:flex;gap:20px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);
  transition:transform var(--t-base),box-shadow var(--t-base);
}
.ladder-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.ladder-dot{
  flex:0 0 auto;width:38px;height:38px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-primary);color:#fff;font-weight:700;font-size:16px;
  box-shadow:0 6px 16px rgba(31,99,214,.26);
}
.ladder-body{flex:1;min-width:0;}
.ladder-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.ladder-top h3{font-size:18px;font-weight:600;}
.ladder-cond{margin-top:8px;font-size:14px;color:var(--c-text-2);}
.ladder-yh{margin-top:12px;display:flex;flex-wrap:wrap;gap:10px 22px;}
.ladder-yh li{
  position:relative;padding-left:20px;font-size:14px;color:var(--c-text-2);
}
.ladder-yh li i{
  position:absolute;left:0;top:6px;color:var(--c-ok);font-size:12px;
}
.bar{margin-top:16px;height:8px;border-radius:var(--r-pill);background:var(--c-line-2);overflow:hidden;}
.bar span{display:block;height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--c-primary),#5C97F0);}
.bar-meta{margin-top:8px;font-size:12px;color:var(--c-text-3);}

/* ---------------- 套餐对比 ---------------- */
.table-wrap{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);overflow-x:auto;
}
table.plan-table{width:100%;border-collapse:collapse;min-width:720px;}
.plan-table th,.plan-table td{padding:16px 20px;text-align:left;font-size:15px;}
.plan-table thead th{
  background:var(--c-primary-050);color:var(--c-text);
  font-weight:600;font-size:15px;border-bottom:1px solid var(--c-line);
}
.plan-table thead th:first-child{color:var(--c-text-2);font-weight:500;}
.plan-table tbody tr{border-bottom:1px solid var(--c-line-2);transition:background var(--t-fast);}
.plan-table tbody tr:nth-child(even){background:#FAFCFF;}
.plan-table tbody tr:hover{background:var(--c-primary-050);}
.plan-table td:first-child{color:var(--c-text-2);}
.plan-table td{color:var(--c-text);font-variant-numeric:tabular-nums;}
.plan-table td.num{text-align:right;font-weight:600;}
.col-flag{position:relative;}
.col-flag .badge{margin-left:8px;vertical-align:middle;}
.plan-note{margin-top:14px;font-size:13px;color:var(--c-text-3);}

/* ---------------- 限时窄带 ---------------- */
.band{background:var(--c-accent);color:#fff;}
.band-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;padding-top:26px;padding-bottom:26px;
}
.band h2{font-size:22px;font-weight:700;line-height:1.4;}
.band p{margin-top:6px;font-size:14px;color:rgba(255,255,255,.9);}
.countdown{display:flex;align-items:center;gap:10px;font-variant-numeric:tabular-nums;}
.countdown .cd-cell{
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
  border-radius:10px;padding:8px 12px;text-align:center;min-width:62px;
}
.countdown .cd-num{display:block;font-size:22px;font-weight:700;line-height:1.1;}
.countdown .cd-unit{display:block;font-size:11px;color:rgba(255,255,255,.86);}
.band .btn-accent{background:#fff;color:var(--c-accent-600);box-shadow:0 8px 20px rgba(120,60,10,.18);}
.band .btn-accent:hover{background:#FFF7EF;color:var(--c-accent-600);}

/* ---------------- FAQ ---------------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:18px 22px;font-size:16px;font-weight:600;color:var(--c-text);
  transition:color var(--t-fast),background var(--t-fast);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary);background:#FAFCFF;}
.faq-item summary i{color:var(--c-text-3);transition:transform var(--t-fast),color var(--t-fast);}
.faq-item[open] summary{color:var(--c-primary);}
.faq-item[open] summary i{transform:rotate(180deg);color:var(--c-primary);}
.faq-answer{padding:0 22px 20px;font-size:15px;color:var(--c-text-2);line-height:1.85;}

/* ---------------- 咨询表单 ---------------- */
.consult{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start;}
.consult-copy h2{font-size:28px;font-weight:700;line-height:1.35;}
.consult-copy p{margin-top:14px;color:var(--c-text-2);font-size:16px;}
.copy-points{margin-top:26px;display:flex;flex-direction:column;gap:16px;}
.copy-points li{display:flex;gap:14px;align-items:flex-start;}
.copy-points .pt-ico{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;
  background:var(--c-primary-050);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:14px;
}
.copy-points b{display:block;font-size:15px;font-weight:600;}
.copy-points span{display:block;font-size:13px;color:var(--c-text-3);line-height:1.7;}
.consult-form{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-2);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--c-text-2);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;height:44px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);background:#FBFDFF;
  transition:border-color var(--t-fast),box-shadow var(--t-fast),background var(--t-fast);
}
.field textarea{height:auto;padding:12px 14px;resize:vertical;line-height:1.75;}
.field select{appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%235C7089' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:38px;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);background:#fff;
  box-shadow:0 0 0 4px var(--c-primary-050);
}
.field input.is-error,.field textarea.is-error{border-color:var(--c-warn);}
.field input::placeholder,.field textarea::placeholder{color:var(--c-text-3);}
.form-tip{margin-top:12px;font-size:13px;color:var(--c-text-3);}
.form-tip.is-ok{color:var(--c-ok);}

/* ---------------- 页脚 ---------------- */
.site-footer{background:var(--c-footer);color:#C6D3E4;margin-top:auto;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;padding:60px 0 44px;
}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col p{font-size:14px;color:#9DAEC4;line-height:1.85;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:14px;color:#C6D3E4;}
.footer-col ul a:hover{color:#fff;}
.footer-logo{display:inline-block;font-size:17px;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-logo:hover{color:#fff;}
.footer-col .btn{margin-top:16px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8296AE;
}

/* ---------------- 响应式 ---------------- */
@media (max-width:1199px) and (min-width:992px){
  :root{--side-w:76px;}
  .app-side{padding:20px 12px 16px;align-items:center;}
  .side-brand{padding:0 0 18px;width:100%;display:flex;justify-content:center;}
  .brand-text{display:none;}
  .side-menu{width:100%;align-items:center;}
  .side-item{width:44px;justify-content:center;padding:0;}
  .side-item .si-text{display:none;}
  .side-item.is-active::before{top:8px;bottom:8px;}
  .side-foot{width:100%;align-items:center;}
  .side-foot .btn{width:44px;padding:0;}
  .side-foot .btn .btn-label{display:none;}
  .side-contact{display:none;}
  .hero-inner{gap:36px;}
  .hero h1{font-size:34px;}
}
@media (max-width:991px){
  .mobile-bar{display:flex;}
  .app-side{
    width:276px;transform:translateX(-100%);
    transition:transform var(--t-base);box-shadow:var(--sh-3);z-index:90;
  }
  body.drawer-open .app-side{transform:translateX(0);}
  .app-main{margin-left:0;padding-top:56px;}
  .container{padding:0 22px;}
  .hero{padding:44px 0 50px;}
  .hero-inner{grid-template-columns:1fr;gap:32px;}
  .hero h1{font-size:30px;}
  .hero-visual img{height:300px;}
  .hero-float{left:14px;bottom:14px;}
  .section{padding:56px 0;}
  .consult{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 36px;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .hero{padding:34px 0 42px;}
  .hero h1{font-size:26px;letter-spacing:0;}
  .hero-sub{font-size:15px;}
  .hero-cta{flex-direction:column;align-items:stretch;}
  .hero-cta .btn{width:100%;}
  .hero-metrics{gap:24px;}
  .hero-metrics b{font-size:22px;}
  .hero-visual img{height:220px;}
  .hero-float{position:static;margin-top:14px;max-width:none;}
  .section{padding:40px 0;}
  .sec-head h2,.consult-copy h2{font-size:22px;}
  .sec-head-row{flex-direction:column;align-items:flex-start;gap:12px;}
  .step-card{padding:22px 18px;}
  .ladder-item{flex-direction:column;gap:14px;padding:20px 18px;}
  .band-inner{flex-direction:column;align-items:flex-start;}
  .countdown{flex-wrap:wrap;}
  .consult-form{padding:22px 18px;}
  .table-wrap{border-radius:12px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: article */
:root{
  --c-primary:#1F63D6;
  --c-primary-600:#1750B0;
  --c-primary-050:#EAF2FE;
  --c-accent:#F2994A;
  --c-accent-600:#D97F2B;
  --c-ok:#17B08C;
  --c-warn:#D64545;
  --c-bg:#F4F7FB;
  --c-card:#FFFFFF;
  --c-line:#E4EBF4;
  --c-line-soft:#EDF2F8;
  --c-text:#1C2A3A;
  --c-text-2:#5C7089;
  --c-text-3:#8A9BB0;
  --c-foot:#16283F;
  --sh-1:0 1px 2px rgba(23,52,92,.06);
  --sh-2:0 8px 24px rgba(23,52,92,.08);
  --sh-3:0 14px 32px rgba(23,52,92,.12);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --side-w:240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-primary-600);}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;color:var(--c-text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:14px;color:var(--c-text);}
:focus-visible{outline:none;box-shadow:0 0 0 3px var(--c-primary-050);border-radius:8px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}

/* ============ 左侧 App Shell ============ */
.app-side{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:#fff;border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;z-index:50;
}
.brand{display:block;padding:20px 18px 16px;border-bottom:1px solid var(--c-line);}
.brand-mark{
  display:flex;align-items:center;gap:8px;
  font-size:19px;font-weight:800;letter-spacing:.4px;color:var(--c-text);
}
.brand-mark i{color:var(--c-primary);font-size:17px;}
.brand-sub{display:block;margin-top:4px;font-size:12px;color:var(--c-text-3);letter-spacing:.6px;}
.side-menu{padding:14px 12px;display:flex;flex-direction:column;gap:6px;flex:1 1 auto;overflow-y:auto;}
.side-item{
  position:relative;display:flex;align-items:center;gap:10px;height:44px;padding:0 12px;
  border-radius:var(--r-btn);font-size:14px;font-weight:500;color:var(--c-text-2);
  transition:background .2s ease,color .2s ease;
}
.side-item i{width:18px;text-align:center;font-size:15px;}
.side-item:hover{background:var(--c-primary-050);color:var(--c-primary-600);}
.side-item.is-active{background:var(--c-primary-050);color:var(--c-primary);font-weight:600;}
.side-item.is-active::before{
  content:"";position:absolute;left:-12px;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--c-primary);
}
.side-foot{padding:14px 12px 18px;border-top:1px solid var(--c-line);display:flex;flex-direction:column;gap:10px;}
.side-contact{
  display:flex;align-items:center;justify-content:center;gap:8px;height:38px;
  border-radius:var(--r-btn);border:1px solid var(--c-line);background:#fff;
  font-size:13px;font-weight:600;color:var(--c-text-2);
}
.side-contact:hover{border-color:#C9DCFA;background:var(--c-primary-050);color:var(--c-primary-600);}
.side-mask{
  position:fixed;inset:0;background:rgba(16,38,66,.44);
  opacity:0;pointer-events:none;transition:opacity .24s ease;z-index:52;display:none;
}
.side-mask.is-open{opacity:1;pointer-events:auto;}
.app-topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:55;
  background:#fff;border-bottom:1px solid var(--c-line);
  align-items:center;gap:12px;padding:0 14px;
}
.app-topbar .brand-sm{
  display:flex;align-items:baseline;gap:6px;font-size:16px;font-weight:800;color:var(--c-text);flex:1 1 auto;
}
.app-topbar .brand-sm i{font-style:normal;font-size:11.5px;font-weight:500;color:var(--c-text-3);}
.app-body{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column;}
.app-main{flex:1 0 auto;padding:28px 0 72px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:14px;font-weight:600;line-height:1;cursor:pointer;white-space:nowrap;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-text);}
.btn-ghost:hover{border-color:#C9DCFA;background:var(--c-primary-050);color:var(--c-primary-600);}
.btn-sm{height:38px;font-size:13px;padding:0 15px;}
.btn-xs{height:32px;font-size:12px;padding:0 12px;border-radius:8px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.55;box-shadow:none;pointer-events:none;}

/* ============ 通用徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:12px;font-weight:600;line-height:1;
}
.badge-cat{background:var(--c-primary-050);color:var(--c-primary-600);}
.badge-ok{background:#E7F7F2;color:#0F8A6C;}
.badge-accent{background:#FDF0E4;color:var(--c-accent-600);}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--c-line);font-size:13px;color:var(--c-text-2);
}
.tag:hover{border-color:#C9DCFA;background:var(--c-primary-050);color:var(--c-primary-600);}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--c-text-3);margin-bottom:18px;
}
.crumb a{color:var(--c-text-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb-sep{color:#C3CFDE;}
.crumb-now{color:var(--c-text);font-weight:600;max-width:560px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 文章布局 ============ */
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px;align-items:start;}
.article-main{min-width:0;max-width:980px;}
.article-head{max-width:820px;margin-bottom:22px;}
.article-labels{display:flex;flex-wrap:wrap;gap:8px;}
.article-head h1{font-size:34px;letter-spacing:-.3px;margin:14px 0 16px;}
.article-meta{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:13px;color:var(--c-text-3);}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}
.article-meta i{color:#A9BAD0;}
.article-meta .is-ok i{color:var(--c-ok);}

.article-cover{
  margin:0 0 26px;max-width:820px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-1);
}
.article-cover .cover-media{overflow:hidden;}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .24s ease;}
.article-cover:hover img{transform:scale(1.03);}
.article-cover figcaption{
  padding:10px 16px;font-size:12px;color:var(--c-text-3);
  border-top:1px solid var(--c-line);background:#FBFDFF;
}

.article-body{
  max-width:760px;background:var(--c-card);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-2);padding:34px 34px 26px;
}
.article-body > *:last-child{margin-bottom:0;}
.article-body p{margin:0 0 1.4em;font-size:16px;line-height:1.85;color:#26374A;}
.article-body h2{
  font-size:22px;margin:32px 0 14px;padding-left:12px;
  border-left:3px solid var(--c-primary);line-height:1.45;
}
.article-body h2:first-child{margin-top:0;}
.article-body h3{font-size:18px;margin:24px 0 12px;color:#16283F;}
.article-body ul,.article-body ol{margin:0 0 1.4em;}
.article-body li{position:relative;padding-left:20px;margin-bottom:8px;font-size:15.5px;line-height:1.8;color:#26374A;}
.article-body ul > li::before{
  content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;
  border-radius:2px;background:var(--c-primary);
}
.article-body ol{counter-reset:ol;}
.article-body ol > li{counter-increment:ol;padding-left:28px;}
.article-body ol > li::before{
  content:counter(ol);position:absolute;left:0;top:5px;width:19px;height:19px;border-radius:50%;
  background:var(--c-primary-050);color:var(--c-primary-600);
  font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:0 0 1.4em;padding:14px 18px;background:var(--c-primary-050);
  border-left:3px solid var(--c-primary);border-radius:0 10px 10px 0;
  color:#2A4266;font-size:15px;
}
.article-body blockquote p{margin:0;font-size:15px;color:#2A4266;}
.article-body img{border-radius:var(--r-img);margin:0 0 1.4em;}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(31,99,214,.28);}
.article-body a:hover{border-bottom-color:var(--c-primary-600);}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 1.4em;font-size:14px;}
.article-body th{
  background:var(--c-primary-050);color:#24456F;text-align:left;
  padding:10px 12px;font-weight:600;border-bottom:1px solid var(--c-line);
}
.article-body td{padding:10px 12px;border-bottom:1px solid var(--c-line-soft);color:#33465C;}
.article-body code{
  background:#F1F5FB;border:1px solid var(--c-line);border-radius:6px;
  padding:1px 6px;font-size:13.5px;color:#2A4266;
}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:26px 0;}

.empty-note{
  text-align:center;padding:36px 20px 30px;
}
.empty-note i{font-size:34px;color:#C3D4EA;}
.empty-note h2{font-size:20px;margin:14px 0 10px;padding:0;border:0;}
.empty-note p{max-width:460px;margin:0 auto 20px;font-size:14.5px;color:var(--c-text-2);}

/* ============ 标签行 ============ */
.article-tags{
  max-width:760px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin:26px 0 0;padding:18px 0 0;border-top:1px dashed var(--c-line);
}
.tags-label{font-size:13px;color:var(--c-text-3);margin-right:2px;}

/* ============ 上下篇 ============ */
.post-nav{
  max-width:980px;display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px;
}
.post-nav-card{
  display:flex;flex-direction:column;gap:6px;background:var(--c-card);
  border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);
  padding:18px 20px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.post-nav-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:#C9DCFA;}
.pn-label{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--c-text-3);}
.post-nav-card strong{font-size:16px;color:var(--c-text);}
.post-nav-card:hover strong{color:var(--c-primary);}
.pn-desc{font-size:13px;color:var(--c-text-2);line-height:1.75;}
.post-nav-next{text-align:right;align-items:flex-end;}
.post-nav-next .pn-label{flex-direction:row-reverse;}

/* ============ 右侧栏 ============ */
.article-side{
  position:sticky;top:24px;display:flex;flex-direction:column;gap:16px;
}
.side-card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:20px;
}
.side-card h3{font-size:15px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{
  content:"";width:8px;height:8px;border-radius:3px;background:var(--c-primary);
}
.hot-list li + li{border-top:1px solid var(--c-line-soft);}
.hot-list a{
  display:flex;gap:10px;align-items:flex-start;padding:11px 0;font-size:13.5px;
  color:var(--c-text-2);line-height:1.6;
}
.hot-list a:hover{color:var(--c-primary);}
.hot-list .num{
  flex:0 0 auto;font-size:12px;font-weight:700;color:#A9BAD0;
  font-variant-numeric:tabular-nums;padding-top:1px;
}
.hot-list a:hover .num{color:var(--c-accent);}
.side-card-cta{background:linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 100%);}
.side-card-cta p{font-size:13px;color:var(--c-text-2);line-height:1.8;margin-bottom:14px;}
.back-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 14px;border-radius:var(--r-btn);background:var(--c-primary-050);
  font-size:13.5px;font-weight:600;color:var(--c-primary-600);
}
.back-link:hover{background:#DDE9FC;color:var(--c-primary-600);}

/* ============ 内容卡片（相关推荐） ============ */
.related{margin-top:56px;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:20px;
}
.section-head h2{font-size:22px;}
.section-head .sub{font-size:13px;color:var(--c-text-3);margin-top:6px;}
.more-link{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--c-text-2);}
.more-link:hover{color:var(--c-primary);}
.card{
  display:flex;flex-direction:column;height:100%;background:var(--c-card);
  border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:#C9DCFA;}
.card-media{overflow:hidden;background:#EAF0F8;}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .24s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.card-top{display:flex;align-items:center;gap:10px;}
.card-meta{font-size:12px;color:var(--c-text-3);font-variant-numeric:tabular-nums;}
.card h3{font-size:17px;font-weight:600;line-height:1.5;}
.card h3 a{color:var(--c-text);}
.card h3 a:hover{color:var(--c-primary);}
.card p{
  font-size:13.5px;color:var(--c-text-2);line-height:1.78;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:4px;}
.card-foot .read{font-size:13px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;}
.card-foot .read i{transition:transform .2s ease;}
.card:hover .card-foot .read i{transform:translateX(3px);}
.related-grid{padding-bottom:4px;}
.related-grid .cell{margin-bottom:20px;}

/* ============ FAQ ============ */
.faq{margin-top:56px;}
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:980px;}
.faq-item{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;transition:box-shadow .22s ease,border-color .22s ease;
}
.faq-item[open]{box-shadow:var(--sh-2);border-color:#C9DCFA;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 20px;font-size:16px;font-weight:600;color:var(--c-text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .pm{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;background:var(--c-primary-050);
  color:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;transition:transform .18s ease;
}
.faq-item[open] summary .pm{transform:rotate(180deg);}
.faq-item .faq-answer{
  padding:0 20px 18px;font-size:14.5px;color:var(--c-text-2);line-height:1.85;
  border-top:1px solid var(--c-line-soft);padding-top:14px;margin:0 20px 18px;padding-left:0;padding-right:0;
}

/* ============ 咨询 ============ */
.consult{margin-top:64px;}
.consult-box{
  display:grid;grid-template-columns:1fr 1fr;gap:36px;
  background:var(--c-card);border:1px solid var(--c-line);border-radius:18px;
  box-shadow:var(--sh-2);padding:36px;position:relative;overflow:hidden;
}
.consult-box::before{
  content:"";position:absolute;left:0;top:0;width:4px;height:100%;background:var(--c-primary);
}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:1.4px;
  color:var(--c-primary);margin-bottom:10px;
}
.consult-intro h2{font-size:24px;margin-bottom:12px;}
.consult-intro p{font-size:14.5px;color:var(--c-text-2);line-height:1.85;margin-bottom:18px;}
.consult-points{display:flex;flex-direction:column;gap:10px;}
.consult-points li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:#33465C;}
.consult-points i{color:var(--c-ok);margin-top:5px;font-size:13px;}
.consult-form{display:flex;flex-direction:column;gap:14px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.field{display:flex;flex-direction:column;gap:6px;}
.field label{font-size:13px;font-weight:600;color:var(--c-text-2);}
.field input,.field select,.field textarea{
  width:100%;height:44px;padding:0 13px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);background:#FCFDFF;color:var(--c-text);
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field textarea{height:auto;padding:11px 13px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--c-primary);background:#fff;
  box-shadow:0 0 0 4px var(--c-primary-050);outline:none;
}
.field input::placeholder,.field textarea::placeholder{color:#AFC0D4;}
.form-tip{font-size:12px;color:var(--c-text-3);line-height:1.7;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-foot);color:#C6D3E4;padding:56px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:38px;}
.footer-logo{display:inline-block;font-size:18px;font-weight:800;color:#fff;margin-bottom:12px;letter-spacing:.3px;}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:14px;font-weight:600;letter-spacing:.4px;}
.footer-col p{font-size:13px;line-height:1.9;color:#9FB2CA;margin-bottom:14px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:13px;color:#9FB2CA;}
.footer-col ul a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:18px 0;
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12px;color:#7E93AD;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-grid{grid-template-columns:minmax(0,1fr) 280px;gap:26px;}
}
@media (max-width:1199px) and (min-width:992px){
  :root{--side-w:72px;}
  .brand{padding:18px 0 14px;text-align:center;}
  .brand-mark{justify-content:center;font-size:17px;}
  .brand-mark span{display:none;}
  .brand-sub{display:none;}
  .side-menu{padding:12px 10px;align-items:center;}
  .side-item{justify-content:center;padding:0;width:48px;}
  .si-text{display:none;}
  .side-item.is-active::before{left:-10px;}
  .side-foot{padding:12px 10px 16px;}
  .side-foot .btn span{display:none;}
  .side-contact span{display:none;}
}
@media (max-width:991px){
  :root{--side-w:0px;}
  .app-side{
    width:268px;transform:translateX(-100%);
    transition:transform .24s ease;box-shadow:var(--sh-3);
  }
  .app-side.is-open{transform:translateX(0);}
  .side-mask{display:block;}
  .app-topbar{display:flex;}
  .app-body{margin-left:0;padding-top:56px;}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .article-side{position:static;top:auto;}
  .article-main{max-width:none;}
  .article-body{max-width:none;}
  .article-tags,.post-nav{max-width:none;}
  .consult-box{grid-template-columns:1fr;gap:26px;padding:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .app-main{padding:20px 0 56px;}
  .article-head h1{font-size:28px;}
  .article-body{padding:22px 18px 16px;}
  .article-body h2{font-size:19px;margin:26px 0 12px;}
  .article-body h3{font-size:16.5px;}
  .article-body p,.article-body li{font-size:15px;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav-next{text-align:left;align-items:flex-start;}
  .post-nav-next .pn-label{flex-direction:row;}
  .section-head h2{font-size:19px;}
  .consult{margin-top:48px;}
  .related,.faq{margin-top:44px;}
  .form-row{grid-template-columns:1fr;}
  .related-grid{margin-left:-10px;margin-right:-10px;}
  .related-grid > .cell{padding-left:10px;padding-right:10px;}
}
@media (max-width:520px){
  .article-head h1{font-size:24px;}
  .article-meta{gap:6px 14px;font-size:12.5px;}
  .crumb-now{max-width:200px;}
  .consult-box{padding:22px 18px;}
  .consult-intro h2{font-size:20px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .side-card{padding:16px;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#1F63D6;
  --c-primary-600:#1750B0;
  --c-primary-050:#EAF2FE;
  --c-accent:#F2994A;
  --c-accent-600:#D97F2B;
  --c-ok:#17B08C;
  --c-warn:#D64545;
  --c-bg:#F4F7FB;
  --c-card:#FFFFFF;
  --c-line:#E4EBF4;
  --c-line-soft:#EDF2F8;
  --c-text:#1C2A3A;
  --c-text-2:#5C7089;
  --c-text-3:#8A9BB0;
  --c-ink:#16283F;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(23,52,92,.06);
  --sh-2:0 8px 24px rgba(23,52,92,.08);
  --sh-3:0 14px 32px rgba(23,52,92,.12);
  --side-w:240px;
  --top-h:56px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;padding:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.85;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-primary-600)}
h1,h2,h3,h4,h5{margin:0;line-height:1.35;color:var(--c-text);font-weight:700;letter-spacing:.2px}
h1{font-size:36px}
h2{font-size:28px}
h3{font-size:22px}
h4{font-size:18px}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
li{margin:0}
button,input,select,textarea{font-family:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
summary{outline:none}
:focus-visible{outline:3px solid var(--c-primary-050);outline-offset:2px}

/* ============ 通用工具 ============ */
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.main-inner{max-width:980px}
.sec{padding:64px 0}
.sec-tight{padding:48px 0}
.sec-head{margin-bottom:32px}
.sec-head h2{font-size:28px;margin-bottom:8px}
.sec-head p{color:var(--c-text-2);font-size:14px;margin:0}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--c-primary);background:var(--c-primary-050);border-radius:999px;padding:4px 12px;margin-bottom:12px}
.divider{height:1px;background:var(--c-line);border:0;margin:48px 0}

/* ============ 侧边导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:#fff;border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;z-index:80;
  transition:transform .24s ease;
}
.side-brand{
  display:block;padding:22px 20px 18px;border-bottom:1px solid var(--c-line);
  text-decoration:none;
}
.side-brand .brand-main{display:block;font-size:22px;font-weight:800;color:var(--c-text);letter-spacing:1px;line-height:1.3}
.side-brand .brand-sub{display:block;margin-top:4px;font-size:12px;color:var(--c-text-3);letter-spacing:.6px;line-height:1.5}
.side-brand:hover .brand-main{color:var(--c-primary)}
.side-menu{flex:1 1 auto;padding:16px 12px;display:flex;flex-direction:column;gap:6px;overflow-y:auto}
.side-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:var(--r-btn);
  font-size:14px;color:var(--c-text-2);font-weight:500;
  transition:background .18s ease,color .18s ease;
}
.side-item i{width:18px;text-align:center;font-size:15px;color:var(--c-text-3);transition:color .18s ease}
.side-item:hover{background:var(--c-primary-050);color:var(--c-primary)}
.side-item:hover i{color:var(--c-primary)}
.side-item.is-active{background:var(--c-primary-050);color:var(--c-primary);font-weight:700}
.side-item.is-active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;background:var(--c-primary)}
.side-item.is-active i{color:var(--c-primary)}
.side-foot{padding:16px 16px 20px;border-top:1px solid var(--c-line);display:flex;flex-direction:column;gap:10px}
.side-foot .foot-tip{font-size:12px;color:var(--c-text-3);line-height:1.6}
.side-foot .contact-link{font-size:13px;color:var(--c-text-2);display:flex;align-items:center;gap:8px}
.side-foot .contact-link:hover{color:var(--c-primary)}

/* ============ 顶部移动栏 ============ */
.topbar{
  display:none;align-items:center;gap:12px;
  height:var(--top-h);padding:0 16px;
  background:#fff;border-bottom:1px solid var(--c-line);
  position:sticky;top:0;z-index:70;
}
.burger{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;color:var(--c-text);display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background .18s ease,border-color .18s ease;
}
.burger:hover{background:var(--c-primary-050);border-color:var(--c-primary-050);color:var(--c-primary)}
.topbar-logo{display:flex;align-items:baseline;gap:6px;font-size:17px;font-weight:800;color:var(--c-text);flex:1 1 auto;min-width:0}
.topbar-logo span{font-size:11px;font-weight:500;color:var(--c-text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mask{
  position:fixed;inset:0;background:rgba(22,40,63,.42);z-index:75;
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;
}
.mask.is-open{opacity:1;visibility:visible}
body.no-scroll{overflow:hidden}

/* ============ 主区域 ============ */
.main{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:14px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--c-primary-600);color:#fff;box-shadow:var(--sh-2);transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--c-text);border-color:var(--c-line)}
.btn-ghost:hover{color:var(--c-primary);border-color:var(--c-primary);background:var(--c-primary-050);transform:translateY(-1px)}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1)}
.btn-accent:hover{background:var(--c-accent-600);color:#fff;transform:translateY(-1px)}
.btn-sm{height:36px;padding:0 14px;font-size:13px;border-radius:9px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.55;cursor:not-allowed;box-shadow:none;transform:none}

/* ============ 徽章 ============ */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:999px;padding:3px 11px;font-size:12px;font-weight:600;line-height:1.7;
}
.chip-blue{background:var(--c-primary-050);color:var(--c-primary)}
.chip-accent{background:#FDF1E5;color:var(--c-accent-600)}
.chip-ok{background:#E7F7F3;color:var(--c-ok)}
.chip-gray{background:#EEF2F8;color:var(--c-text-2)}
.chip-line{background:#fff;border:1px solid var(--c-line);color:var(--c-text-2)}

/* ============ 分类页 Hero ============ */
.page-hero{
  position:relative;
  background:#1B4FA8 url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color:#fff;
  padding:56px 0 48px;
  overflow:hidden;
}
.page-hero::after{content:"";position:absolute;inset:0;background:rgba(23,80,176,.86)}
.page-hero .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.75);margin-bottom:18px}
.crumb a{color:rgba(255,255,255,.86)}
.crumb a:hover{color:#fff}
.crumb .sep{opacity:.55}
.crumb .now{color:#fff;font-weight:600}
.page-hero h1{color:#fff;font-size:36px;margin:14px 0 14px;max-width:820px}
.page-hero .lede{font-size:18px;color:rgba(255,255,255,.9);max-width:720px;margin:0 0 26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.hero-actions .btn-ghost{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.4);color:#fff}
.hero-actions .btn-ghost:hover{background:rgba(255,255,255,.22);border-color:#fff;color:#fff}
.spec-bar{display:flex;flex-wrap:wrap;gap:10px}
.spec-item{
  display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.28);
  border-radius:999px;padding:6px 14px;font-size:13px;color:#fff;
}
.spec-item i{font-size:12px;opacity:.9}

/* ============ 实时状态条 ============ */
.status-band{background:#fff;border-bottom:1px solid var(--c-line)}
.status-band .container{display:flex;flex-wrap:wrap;align-items:center;gap:12px;padding-top:12px;padding-bottom:12px;font-size:13px;color:var(--c-text-2)}
.live-dot{width:8px;height:8px;border-radius:50%;background:var(--c-ok);box-shadow:0 0 0 4px rgba(23,176,140,.15);flex:0 0 auto}
.status-band strong{color:var(--c-text);font-weight:600}
.status-band .status-right{margin-left:auto;color:var(--c-text-3);font-variant-numeric:tabular-nums}

/* ============ 栅格 ============ */
.grid-x{display:flex;flex-wrap:wrap;margin-left:-12px;margin-right:-12px}
.grid-x>.cell{padding-left:12px;padding-right:12px;flex:0 0 100%;max-width:100%}
@media (min-width:768px){
  .grid-x>.cell.col-md-6{flex:0 0 50%;max-width:50%}
}
@media (min-width:1024px){
  .grid-x>.cell.col-lg-4{flex:0 0 33.3333%;max-width:33.3333%}
  .grid-x>.cell.col-lg-6{flex:0 0 50%;max-width:50%}
  .grid-x>.cell.col-lg-8{flex:0 0 66.6667%;max-width:66.6667%}
}

/* ============ 卡片 ============ */
.card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);overflow:hidden;
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;height:100%;
}
.card:hover{box-shadow:var(--sh-3);transform:translateY(-2px);border-color:#D8E3F2}
.card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.card-body h3{font-size:18px;font-weight:600}
.card-body p{font-size:14px;color:var(--c-text-2);margin:0}
.card-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:12px;color:var(--c-text-3)}
.media{position:relative;overflow:hidden;background:#E9EFF8}
.media img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease}
.card:hover .media img{transform:scale(1.03)}
.media-16x9{aspect-ratio:16/9}
.media-4x3{aspect-ratio:4/3}
.media-tag{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);color:var(--c-primary);font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px}

/* ============ 说明区 ============ */
.intro-block{display:flex;flex-direction:column;gap:20px}
.intro-figure{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line);background:#fff}
.intro-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.intro-figure figcaption{font-size:12px;color:var(--c-text-3);padding:10px 14px;background:#FAFCFF;border-top:1px solid var(--c-line)}
.lead-text{font-size:16px;color:var(--c-text-2)}
.check-list{display:flex;flex-direction:column;gap:12px;margin-top:4px}
.check-list li{display:flex;gap:10px;font-size:14px;color:var(--c-text-2);line-height:1.8}
.check-list li i{color:var(--c-ok);font-size:14px;margin-top:7px;flex:0 0 auto}
.check-list li b{color:var(--c-text);font-weight:600}

/* ============ 时间线 ============ */
.timeline{display:flex;flex-direction:column;gap:0;margin-top:8px}
.tl-item{display:flex;gap:16px;padding:0 0 24px;position:relative}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:15px;top:32px;bottom:0;width:2px;background:var(--c-line)}
.tl-item:last-child::before{display:none}
.tl-dot{
  flex:0 0 auto;width:32px;height:32px;border-radius:50%;
  background:var(--c-primary-050);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.tl-body h4{font-size:16px;margin-bottom:4px}
.tl-body p{font-size:14px;color:var(--c-text-2);margin:0}
.tl-time{font-size:12px;color:var(--c-text-3);font-variant-numeric:tabular-nums}

/* ============ 侧边信息卡 ============ */
.sticky-card{position:sticky;top:24px}
.info-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);padding:22px;display:flex;flex-direction:column;gap:16px;
}
.info-card h3{font-size:18px}
.info-card .info-sub{font-size:13px;color:var(--c-text-2);margin:0}
.info-list{display:flex;flex-direction:column;gap:10px;padding-top:16px;border-top:1px solid var(--c-line-soft)}
.info-list li{display:flex;justify-content:space-between;gap:12px;font-size:13px;color:var(--c-text-2)}
.info-list li span:last-child{color:var(--c-text);font-weight:600;font-variant-numeric:tabular-nums}
.hint-box{background:var(--c-primary-050);border-radius:10px;padding:12px 14px;font-size:13px;color:var(--c-primary);line-height:1.75}

/* ============ 表格 ============ */
.table-wrap{overflow-x:auto;border:1px solid var(--c-line);border-radius:var(--r-card);background:#fff;box-shadow:var(--sh-2)}
.spec-table{min-width:720px;font-size:14px}
.spec-table th{
  background:var(--c-primary-050);color:var(--c-primary);font-weight:700;font-size:13px;
  text-align:left;padding:14px 18px;white-space:nowrap;
}
.spec-table td{padding:15px 18px;border-top:1px solid var(--c-line-soft);color:var(--c-text-2)}
.spec-table tbody tr:nth-child(even){background:#FAFCFF}
.spec-table tbody tr:hover{background:#F3F8FF}
.spec-table td:first-child{color:var(--c-text);font-weight:600}
.num{font-variant-numeric:tabular-nums;text-align:right}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item:hover{box-shadow:var(--sh-2);border-color:#D8E3F2}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--c-text);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--c-primary-050);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;
  transition:transform .18s ease,background .18s ease;
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);background:var(--c-primary);color:#fff}
.faq-answer{padding:0 20px 20px;font-size:14px;color:var(--c-text-2);line-height:1.85;border-top:1px solid var(--c-line-soft);padding-top:16px}

/* ============ CTA 通栏 ============ */
.cta-band{background:var(--c-accent);color:#fff;border-radius:var(--r-card);padding:36px 32px;box-shadow:var(--sh-2)}
.cta-band-inner{display:flex;flex-wrap:wrap;align-items:center;gap:24px;justify-content:space-between}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:6px}
.cta-band p{color:rgba(255,255,255,.92);font-size:15px;margin:0;max-width:560px}
.cta-band .btn-ghost{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.5);color:#fff}
.cta-band .btn-ghost:hover{background:#fff;color:var(--c-accent-600);border-color:#fff}
.cta-band .btn-light{background:#fff;color:var(--c-accent-600)}
.cta-band .btn-light:hover{background:#FFF6EC;color:var(--c-accent-600);transform:translateY(-1px)}

/* ============ 表单 ============ */
.consult{display:flex;flex-direction:column;gap:24px}
.form-grid{display:grid;grid-template-columns:1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;font-weight:600;color:var(--c-text-2)}
.field input,.field select,.field textarea{
  width:100%;height:44px;padding:0 14px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;font-size:14px;color:var(--c-text);transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:120px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px var(--c-primary-050);
}
.form-note{font-size:13px;color:var(--c-ok);min-height:20px}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:#C8D4E4;margin-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding:56px 0 40px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.footer-col p{font-size:13px;color:#9FB0C6;line-height:1.85;margin:0 0 16px}
.footer-logo{display:inline-block;font-size:18px;font-weight:800;color:#fff;margin-bottom:12px;letter-spacing:.5px}
.footer-logo:hover{color:#fff;text-decoration:underline}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul a{font-size:13px;color:#9FB0C6}
.footer-col ul a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:18px 0 26px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12px;color:#8496AD;
}
.footer-bottom span{font-variant-numeric:tabular-nums}

/* ============ 响应式 ============ */
@media (min-width:992px) and (max-width:1199px){
  :root{--side-w:72px}
  .side-brand{padding:18px 10px;text-align:center}
  .side-brand .brand-main{font-size:16px;letter-spacing:0}
  .side-brand .brand-sub{display:none}
  .side-menu{padding:14px 10px}
  .side-item{justify-content:center;padding:0}
  .side-item .si-text{display:none}
  .side-item.is-active::before{left:-2px}
  .side-foot{padding:14px 10px;align-items:center}
  .side-foot .foot-tip{display:none}
  .side-foot .btn span{display:none}
  .side-foot .btn{padding:0 10px}
  .side-foot .contact-link span{display:none}
}

@media (max-width:991px){
  .topbar{display:flex}
  .sidebar{transform:translateX(-100%);width:270px;box-shadow:var(--sh-3)}
  .sidebar.is-open{transform:translateX(0)}
  .main{margin-left:0}
  .page-hero{padding:40px 0 36px}
  .page-hero h1{font-size:28px}
  .page-hero .lede{font-size:15px}
  .sec{padding:48px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:40px 0 28px}
}

@media (max-width:639px){
  .container{padding:0 16px}
  h1{font-size:26px}
  .page-hero h1{font-size:24px}
  .sec{padding:40px 0}
  .sec-head h2{font-size:22px}
  .card-body{padding:16px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .cta-band{padding:26px 20px}
  .cta-band h2{font-size:22px}
  .cta-band-inner .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .form-grid{grid-template-columns:1fr}
  .info-card{padding:18px}
}

/* roulang page: category2 */
:root{
  --c-primary:#1F63D6;
  --c-primary-600:#1750B0;
  --c-primary-050:#EAF2FE;
  --c-accent:#F2994A;
  --c-accent-600:#D97F2B;
  --c-ok:#17B08C;
  --c-warn:#D64545;
  --c-bg:#F4F7FB;
  --c-card:#FFFFFF;
  --c-line:#E4EBF4;
  --c-line-soft:#EDF2F8;
  --c-text:#1C2A3A;
  --c-muted:#5C7089;
  --c-faint:#8A9BB0;
  --c-footer:#16283F;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(23,52,92,.06);
  --sh-2:0 8px 24px rgba(23,52,92,.08);
  --sh-3:0 14px 32px rgba(23,52,92,.12);
  --sp-1:8px; --sp-2:12px; --sp-3:16px; --sp-4:24px; --sp-5:32px; --sp-6:48px; --sp-7:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease}
a:hover{color:var(--c-primary-600)}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;color:var(--c-text)}
h1{font-size:clamp(26px,3.2vw,40px);letter-spacing:.2px}
h2{font-size:clamp(20px,2vw,26px)}
h3{font-size:18px}
p{margin:0 0 14px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:background-color .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn i{font-size:14px}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-600);color:#fff;box-shadow:0 10px 20px rgba(31,99,214,.26);transform:translateY(-1px)}
.btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-text)}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:var(--c-accent-600);color:#fff;box-shadow:0 10px 20px rgba(242,153,74,.28);transform:translateY(-1px)}
.btn-block{width:100%}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-xs{height:34px;padding:0 12px;font-size:13px}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px var(--c-primary-050)}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 12px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.9;
}
.badge-blue{background:var(--c-primary-050);color:var(--c-primary-600)}
.badge-green{background:#E4F7F1;color:#0E8A6D}
.badge-orange{background:#FDF0E3;color:#C06A21}
.badge-gray{background:#EEF2F7;color:var(--c-muted)}

/* ---------- 侧边导航 ---------- */
.app-side{
  position:fixed;top:0;left:0;bottom:0;width:240px;z-index:60;
  background:#fff;border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;padding:22px 16px 18px;
  transition:transform .24s ease;
}
.brand{display:flex;align-items:center;gap:10px;padding:0 6px 20px;border-bottom:1px solid var(--c-line);margin-bottom:18px}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;background:var(--c-primary);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;box-shadow:var(--sh-1);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:19px;font-weight:800;color:var(--c-text);letter-spacing:.5px}
.brand-text em{font-style:normal;font-size:12px;color:var(--c-faint);letter-spacing:.2px}
.side-menu{display:flex;flex-direction:column;gap:6px}
.side-item{
  position:relative;display:flex;align-items:center;gap:11px;
  height:44px;padding:0 12px;border-radius:10px;
  color:var(--c-muted);font-size:14.5px;font-weight:500;
  transition:background-color .2s ease,color .2s ease;
}
.side-item i{width:18px;text-align:center;font-size:15px;color:var(--c-faint);transition:color .2s ease}
.side-item:hover{background:var(--c-primary-050);color:var(--c-primary-600)}
.side-item:hover i{color:var(--c-primary-600)}
.side-item.is-active{background:var(--c-primary-050);color:var(--c-primary);font-weight:600}
.side-item.is-active i{color:var(--c-primary)}
.side-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;background:var(--c-primary);
}
.side-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--c-line);display:flex;flex-direction:column;gap:10px}
.side-contact{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--c-muted);padding:6px 8px;border-radius:8px}
.side-contact:hover{background:#F5F8FC;color:var(--c-primary)}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:65;
  background:#fff;border-bottom:1px solid var(--c-line);
  align-items:center;gap:12px;padding:0 14px;
}
.hamburger{
  width:40px;height:40px;border:1px solid var(--c-line);background:#fff;border-radius:10px;
  color:var(--c-text);display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.hamburger:focus-visible{outline:none;box-shadow:0 0 0 3px var(--c-primary-050)}
.topbar-logo{display:flex;flex-direction:column;line-height:1.15;color:var(--c-text)}
.topbar-logo strong{font-size:15px;font-weight:800}
.topbar-logo span{font-size:10.5px;color:var(--c-faint)}
.topbar .btn{margin-left:auto}
.side-mask{
  display:none;position:fixed;inset:0;background:rgba(16,32,54,.42);z-index:55;
  opacity:0;transition:opacity .24s ease;
}
body.drawer-open .side-mask{display:block;opacity:1}
body.drawer-open{overflow:hidden}

/* ---------- 主区域 ---------- */
.app-main{margin-left:240px;min-height:100vh;display:flex;flex-direction:column}

/* ---------- 首屏 ---------- */
.page-hero{position:relative;overflow:hidden;padding:52px 0 40px;background:#EDF3FC}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.22}
.hero-veil{position:absolute;inset:0;background:linear-gradient(105deg,rgba(244,247,251,.96) 0%,rgba(244,247,251,.86) 48%,rgba(244,247,251,.55) 100%)}
.page-hero .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:16px}
.crumb a{color:var(--c-muted)}
.crumb a:hover{color:var(--c-primary)}
.crumb span{color:var(--c-faint)}
.crumb em{font-style:normal;color:var(--c-faint)}
.hero-sub{margin:14px 0 18px;font-size:17px;color:var(--c-muted);max-width:720px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;top:0;z-index:40;background:#fff;
  border-bottom:1px solid var(--c-line);box-shadow:var(--sh-1);
}
.anchor-inner{display:flex;gap:10px;overflow-x:auto;padding-top:12px;padding-bottom:12px;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-chip{
  flex:0 0 auto;padding:7px 15px;border-radius:999px;border:1px solid var(--c-line);
  font-size:14px;color:var(--c-muted);background:#fff;transition:all .2s ease;
}
.anchor-chip:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-050)}
.anchor-chip.is-current{background:var(--c-primary);border-color:var(--c-primary);color:#fff}

/* ---------- 内容双栏 ---------- */
.content-wrap{display:grid;grid-template-columns:228px minmax(0,1fr);gap:32px;align-items:start;padding-top:40px;padding-bottom:64px}
.toc{
  position:sticky;top:88px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:18px 16px;box-shadow:var(--sh-1);
}
.toc h2{font-size:13px;color:var(--c-faint);font-weight:600;letter-spacing:1px;margin-bottom:12px}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-link{
  display:flex;align-items:center;gap:8px;
  padding:9px 10px;font-size:14px;color:var(--c-muted);
  border-left:2px solid transparent;border-radius:0 8px 8px 0;
  transition:all .2s ease;
}
.toc-link:hover{color:var(--c-primary);background:#F5F8FC}
.toc-link.is-current{color:var(--c-primary);background:var(--c-primary-050);border-left-color:var(--c-primary);font-weight:600}
.toc-note{margin-top:14px;padding-top:14px;border-top:1px solid var(--c-line);font-size:12.5px;color:var(--c-faint);line-height:1.75}

/* ---------- 分节卡片 ---------- */
.sec-card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:30px 32px;box-shadow:var(--sh-1);margin-bottom:24px;scroll-margin-top:96px;
  transition:box-shadow .24s ease;
}
.sec-card:hover{box-shadow:var(--sh-2)}
.sec-card>h2{
  position:relative;padding-left:14px;margin-bottom:16px;
}
.sec-card>h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--c-primary);
}
.sec-lead{color:var(--c-muted);font-size:15.5px}
.sec-card h3{position:relative;padding-left:12px;margin:26px 0 10px;font-size:17px}
.sec-card h3::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:3px;border-radius:3px;background:#BFD6F7}

.plan-grid{margin-top:6px}
.plan-card{
  height:100%;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px;display:flex;flex-direction:column;gap:10px;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.plan-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:#CFE0F8}
.plan-card .plan-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.plan-card h4{font-size:18px}
.plan-for{font-size:14px;color:var(--c-muted)}
.plan-points{display:flex;flex-direction:column;gap:7px;font-size:14px;color:var(--c-muted);margin-top:2px}
.plan-points li{display:flex;gap:8px;align-items:flex-start}
.plan-points i{color:var(--c-ok);font-size:13px;margin-top:6px}

.media-row{display:grid;grid-template-columns:1.02fr .98fr;gap:26px;align-items:center;margin:18px 0 6px}
.img-frame{border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-2);background:#E9EFF7}
.img-frame img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .24s ease}
.img-frame:hover img{transform:scale(1.03)}
.cap{font-size:12.5px;color:var(--c-faint);margin-top:8px;text-align:center}

.check-list{display:flex;flex-direction:column;gap:12px;margin-top:6px}
.check-list li{display:flex;gap:11px;align-items:flex-start;font-size:15px;color:var(--c-muted)}
.check-list i{color:var(--c-primary);margin-top:6px;font-size:13px}
.check-list strong{color:var(--c-text);font-weight:600}

.steps{counter-reset:step;display:flex;flex-direction:column;gap:12px;margin-top:10px}
.steps li{
  counter-increment:step;position:relative;padding:15px 18px 15px 58px;
  background:#F8FBFF;border:1px solid var(--c-line);border-radius:12px;
  font-size:15px;color:var(--c-muted);
}
.steps li::before{
  content:counter(step);position:absolute;left:16px;top:15px;
  width:28px;height:28px;border-radius:50%;background:#fff;border:1px solid #CFE0F8;
  color:var(--c-primary);font-weight:700;font-size:13px;
  display:flex;align-items:center;justify-content:center;
}
.steps strong{color:var(--c-text);display:block;margin-bottom:2px;font-weight:600}

.timeline{position:relative;margin-top:12px;padding-left:22px}
.timeline::before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:2px;background:var(--c-line)}
.timeline li{position:relative;padding-bottom:18px}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{
  content:"";position:absolute;left:-21px;top:9px;width:10px;height:10px;border-radius:50%;
  background:#fff;border:3px solid var(--c-primary);
}
.timeline strong{display:block;font-size:15.5px;font-weight:600}
.timeline span{font-size:14.5px;color:var(--c-muted)}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;margin-top:14px}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item:hover{border-color:#CFE0F8;box-shadow:var(--sh-1)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:16px 20px;display:flex;align-items:center;justify-content:space-between;gap:14px;
  font-size:16px;font-weight:600;color:var(--c-text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--c-primary);font-size:13px;transition:transform .18s ease}
.faq-item[open] summary i{transform:rotate(180deg)}
.faq-body{padding:0 20px 18px;font-size:15px;color:var(--c-muted)}

/* ---------- 咨询 CTA ---------- */
.consult{background:#EAF2FE;padding:56px 0;border-top:1px solid #DCE8FA}
.consult-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}
.consult h2{margin-bottom:12px}
.consult p{color:var(--c-muted)}
.consult-points{display:flex;flex-direction:column;gap:10px;margin-top:18px}
.consult-points li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--c-muted)}
.consult-points i{color:var(--c-primary);margin-top:6px;font-size:13px}
.form-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-2)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--c-muted);margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%;min-height:44px;padding:10px 12px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  font-size:15px;font-family:inherit;color:var(--c-text);background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:104px;resize:vertical;line-height:1.75}
.field input::placeholder,.field textarea::placeholder{color:#A9B8C9}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px var(--c-primary-050);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-note{margin-top:12px;font-size:13.5px;color:var(--c-faint)}
.form-note.is-ok{color:var(--c-ok)}
.form-note.is-err{color:var(--c-warn)}

/* ---------- 相关条目 ---------- */
.related{padding:60px 0 72px}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px}
.related-head h2{margin-bottom:6px}
.related-head p{color:var(--c-muted);font-size:15px;margin:0}
.rel-card{
  height:100%;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3)}
.rel-thumb{overflow:hidden;background:#E9EFF7}
.rel-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .24s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.03)}
.rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:17px;line-height:1.5}
.rel-body p{font-size:14px;color:var(--c-muted);margin:0}
.rel-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--c-faint)}
.rel-meta a{font-weight:600;font-size:13.5px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-footer);color:#C3D0E0;padding:56px 0 22px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:14px;font-weight:600}
.footer-col p{font-size:13.5px;line-height:1.85;color:#9FB1C7}
.footer-logo{display:inline-block;font-size:17px;font-weight:800;color:#fff;margin-bottom:12px;letter-spacing:.5px}
.footer-logo:hover{color:#fff}
.footer-col ul{display:flex;flex-direction:column;gap:9px}
.footer-col ul a{font-size:13.5px;color:#9FB1C7}
.footer-col ul a:hover{color:#fff}
.footer-bottom{
  margin-top:34px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12.5px;color:#8496AC;
}
.footer-col .btn{margin-top:12px}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .app-side{width:72px;padding:20px 10px 16px}
  .brand{padding:0 0 16px;justify-content:center}
  .brand-text{display:none}
  .side-item{justify-content:center;padding:0}
  .side-item .si-text{display:none}
  .side-item::after{
    content:attr(data-tip);position:absolute;left:64px;white-space:nowrap;
    background:var(--c-text);color:#fff;font-size:12px;padding:5px 10px;border-radius:8px;
    opacity:0;pointer-events:none;transition:opacity .18s ease;
  }
  .side-item:hover::after{opacity:1}
  .side-foot .btn span,.side-contact span{display:none}
  .side-foot .btn{padding:0;height:40px}
  .side-contact{justify-content:center}
  .app-main{margin-left:72px}
}
@media (max-width:991px){
  .topbar{display:flex}
  .app-side{width:262px;padding:20px 16px 18px;transform:translateX(-100%);box-shadow:var(--sh-3)}
  body.drawer-open .app-side{transform:translateX(0)}
  .brand{justify-content:flex-start}
  .brand-text{display:flex}
  .side-item{justify-content:flex-start;padding:0 12px}
  .side-item .si-text{display:inline}
  .side-item::after{display:none}
  .side-foot .btn span,.side-contact span{display:inline}
  .side-contact{justify-content:flex-start}
  .app-main{margin-left:0;padding-top:56px}
  .anchor-bar{top:56px}
  .content-wrap{grid-template-columns:1fr;padding-top:28px;padding-bottom:48px}
  .toc{position:static;display:none}
  .media-row{grid-template-columns:1fr;gap:18px}
  .consult-grid{grid-template-columns:1fr;gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .sec-card{padding:24px}
  .page-hero{padding:36px 0 30px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .sec-card{padding:18px 16px;border-radius:12px}
  .field-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .related{padding:40px 0 48px}
  .consult{padding:40px 0}
  .hero-sub{font-size:15.5px}
  .rel-body{padding:16px}
  .form-card{padding:18px 16px}
  .btn{width:auto}
  .form-card .btn{width:100%}
}