/* roulang page: index */
:root{
  --brand:#1652F0;
  --brand-hover:#0F42C9;
  --brand-light:#EEF3FF;
  --accent:#FF6A2B;
  --pos:#12B981;
  --neg:#F04438;
  --neutral-bar:#C9D4E6;
  --ink:#0F1B2D;
  --text:#3A4A63;
  --muted:#6B7A93;
  --line:#E4EAF3;
  --input-line:#D6DEEB;
  --canvas:#F6F8FC;
  --card:#FFFFFF;
  --footer:#0E1B33;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --sh-1:0 1px 2px rgba(16,32,64,.06);
  --sh-2:0 10px 30px -12px rgba(16,42,90,.18);
  --sh-3:0 16px 40px -14px rgba(16,42,90,.26);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--canvas);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:700;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}

.container-x{max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px;}
@media (min-width:768px){.container-x{padding-left:24px;padding-right:24px;}}
@media (min-width:1024px){.container-x{padding-left:32px;padding-right:32px;}}

/* 头部 */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out;}
.site-header.is-scrolled{box-shadow:0 6px 18px -12px rgba(16,42,90,.24);}
.nav-link{position:relative;display:inline-flex;align-items:center;height:52px;padding:0 2px;font-size:14px;color:var(--text);}
.nav-link:hover{color:var(--brand);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);border-radius:2px;}
.hot-pill{display:inline-flex;align-items:center;height:26px;padding:0 10px;font-size:12px;color:var(--muted);background:var(--canvas);border:1px solid var(--line);border-radius:999px;}
.hot-pill:hover{color:var(--brand);background:var(--brand-light);border-color:#C9D9FF;}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(15,27,45,.45);opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;z-index:60;}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{position:fixed;top:0;right:0;height:100%;width:88%;max-width:360px;background:#fff;z-index:61;transform:translateX(100%);transition:transform .24s ease-out;overflow-y:auto;box-shadow:-12px 0 40px -20px rgba(16,42,90,.4);}
.drawer.is-open{transform:translateX(0);}
.drawer-item{display:flex;align-items:center;justify-content:space-between;padding:14px 4px;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink);}
.drawer-item:hover{color:var(--brand);}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 24px;border-radius:var(--r-sm);font-size:15px;font-weight:600;border:1px solid transparent;transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px -12px rgba(22,82,240,.7);}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--input-line);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);}
.btn-link svg{transition:transform .18s ease-out;}
.btn-link:hover svg{transform:translateX(3px);}

/* 徽章 */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;font-size:12px;border-radius:999px;white-space:nowrap;}
.badge-cat{background:var(--brand-light);color:var(--brand);}
.badge-time{background:var(--canvas);color:var(--muted);}
.badge-pos{background:#E9F9F2;color:#0E9E6E;}
.badge-neg{background:#FEECEB;color:#D92D20;}

/* 区块 */
.sec{padding:48px 0;}
@media (min-width:1024px){.sec{padding:80px 0;}}
.sec-line{border-top:1px solid var(--line);}
.sec-title{position:relative;padding-left:12px;font-size:24px;line-height:1.35;font-weight:700;}
.sec-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand);}
@media (min-width:1024px){.sec-title{font-size:27px;}}
.sec-sub{margin-top:8px;font-size:15px;color:var(--muted);}

/* 卡片 */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;}
.card-hover:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:#C9D4E6;}
.icon-box{width:40px;height:40px;border-radius:var(--r-md);background:var(--brand-light);display:flex;align-items:center;justify-content:center;color:var(--brand);flex:0 0 auto;}
.thumb{background:#EEF2F8;object-fit:cover;width:100%;}

/* 进度对比 */
.cmp-track{position:relative;height:8px;border-radius:999px;background:var(--neutral-bar);overflow:hidden;}
.cmp-fill{position:absolute;left:0;top:0;bottom:0;border-radius:999px;background:var(--brand);}

/* 表单 */
.field-label{display:block;font-size:13px;color:var(--text);font-weight:600;margin-bottom:6px;}
.field{width:100%;height:44px;border:1px solid var(--input-line);border-radius:var(--r-sm);background:#fff;padding:0 14px;font-size:15px;color:var(--ink);transition:border-color .18s ease-out,box-shadow .18s ease-out;}
.field::placeholder{color:#9AA8BC;}
.field:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(22,82,240,.14);outline:none;}
textarea.field{height:auto;min-height:110px;padding:12px 14px;resize:vertical;line-height:1.7;}
select.field{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#6B7A93 50%),linear-gradient(135deg,#6B7A93 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 15px) 20px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}

/* FAQ */
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:none;}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;padding:20px 20px 20px 20px;background:transparent;border:none;font-size:16px;font-weight:600;color:var(--ink);position:relative;}
.faq-q:hover{color:var(--brand);}
.faq-q .faq-mark{flex:0 0 auto;color:var(--muted);transition:transform .2s ease-out,color .2s ease-out;}
.faq-item.is-open .faq-q .faq-mark{transform:rotate(180deg);color:var(--brand);}
.faq-item.is-open .faq-q::before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:2px;background:var(--brand);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease-out;}
.faq-a-inner{padding:0 20px 20px 20px;font-size:15px;color:var(--text);line-height:1.85;}

/* 列表条目 */
.list-item{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line);}
.list-item:last-child{border-bottom:none;}
.list-item:hover .list-title{color:var(--brand);}
.list-title{font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;transition:color .18s ease-out;}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* 页脚 */
.site-footer{background:var(--footer);color:rgba(255,255,255,.72);}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-link{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:6px 0;transition:color .18s ease-out,transform .18s ease-out;}
.footer-link:hover{color:#fff;transform:translateX(2px);}

.hero-media{border-radius:20px;overflow:hidden;border:1px solid var(--line);background:#EEF2F8;box-shadow:var(--sh-2);}
.mini-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-3);}
.grid-hero{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:1024px){.grid-hero{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center;}}

/* roulang page: category1 */
:root{
    --brand:#1652F0;
    --brand-hover:#0F42C9;
    --brand-soft:#EEF3FF;
    --accent:#FF6A2B;
    --ink:#0F1B2D;
    --body-text:#3A4A63;
    --muted:#6B7A93;
    --line:#E4EAF3;
    --input-line:#D6DEEB;
    --page:#F6F8FC;
    --card:#FFFFFF;
    --footer-bg:#0E1B33;
    --pos:#12B981;
    --neg:#F04438;
    --neutral:#C9D4E6;
    --r-lg:16px;
    --r-md:12px;
    --r-sm:10px;
    --sh-1:0 1px 2px rgba(16,32,64,.06);
    --sh-2:0 10px 30px -12px rgba(16,42,90,.18);
    --sh-3:0 16px 40px -14px rgba(16,42,90,.26);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.75;
    color:var(--body-text);
    background:var(--page);
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;}
  p{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  a{color:inherit;text-decoration:none;transition:color .18s ease-out;}
  img{display:block;max-width:100%;height:auto;}
  button,input,select,textarea{font:inherit;color:inherit;}
  button{cursor:pointer;background:none;border:none;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
  .num{font-variant-numeric:tabular-nums;}

  /* 容器 */
  .container-x{max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px;}
  @media(min-width:640px){.container-x{padding-left:24px;padding-right:24px;}}
  @media(min-width:1024px){.container-x{padding-left:32px;padding-right:32px;}}

  /* 顶部导航 */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:#fff;
    border-bottom:1px solid var(--line);
    transition:box-shadow .2s ease-out;
  }
  .site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(16,42,90,.35);}
  .logo-mark{
    display:inline-flex;align-items:center;justify-content:center;
    width:32px;height:32px;border-radius:10px;background:var(--brand);color:#fff;flex:none;
  }
  .nav-link{
    position:relative;display:inline-block;padding:13px 0;
    font-size:14px;color:var(--body-text);white-space:nowrap;
  }
  .nav-link:hover{color:var(--brand);}
  .nav-link.is-active{color:var(--ink);font-weight:700;}
  .nav-link.is-active::after{
    content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;
    background:var(--accent);border-radius:2px;
  }
  .search-input{
    width:100%;height:42px;border-radius:9999px;border:1px solid var(--input-line);
    background:#fff;padding:0 16px 0 42px;font-size:14px;color:var(--ink);
    transition:border-color .18s ease-out,box-shadow .18s ease-out;
  }
  .search-input::placeholder{color:var(--muted);}
  .search-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(22,82,240,.12);}
  .hot-chip{
    display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:9999px;
    background:var(--page);border:1px solid var(--line);font-size:12px;color:var(--muted);
    transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
  }
  a.hot-chip:hover{background:var(--brand-soft);color:var(--brand);border-color:#CFDDFF;}
  .menu-btn{
    display:inline-flex;align-items:center;justify-content:center;
    width:44px;height:44px;border-radius:10px;border:1px solid var(--line);color:var(--ink);
  }
  .menu-btn:hover{border-color:var(--brand);color:var(--brand);}

  /* 移动抽屉 */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(15,27,45,.45);z-index:60;
    opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);z-index:61;
    background:#fff;box-shadow:-18px 0 40px -24px rgba(16,42,90,.4);
    transform:translateX(102%);transition:transform .24s ease-out;
    display:flex;flex-direction:column;overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    padding:14px 4px;font-size:15px;color:var(--ink);border-bottom:1px solid var(--line);
  }
  .drawer-link:hover{color:var(--brand);}
  .drawer-link.is-active{color:var(--brand);font-weight:700;}

  /* 按钮 */
  .btn-primary{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 24px;border-radius:var(--r-sm);
    background:var(--brand);border:1px solid var(--brand);color:#fff;
    font-size:15px;font-weight:600;
    transition:background .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
  }
  .btn-primary:hover{background:var(--brand-hover);border-color:var(--brand-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;border-radius:var(--r-sm);
    background:#fff;border:1px solid var(--input-line);color:var(--ink);
    font-size:15px;font-weight:600;
    transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
  }
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);box-shadow:var(--sh-1);}
  .btn-ghost:active{transform:translateY(0);}
  .btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600;}
  .btn-text svg{transition:transform .18s ease-out;}
  .btn-text:hover{color:var(--brand-hover);}
  .btn-text:hover svg{transform:translateX(3px);}

  /* 徽章与卡片 */
  .badge{
    display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
    border-radius:9999px;font-size:12px;font-weight:600;white-space:nowrap;
  }
  .badge-cat{background:var(--brand-soft);color:var(--brand);}
  .badge-time{background:var(--page);color:var(--muted);font-weight:500;}
  .badge-pos{background:#E9F9F2;color:#0E9E6E;}
  .card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
    box-shadow:var(--sh-1);
    transition:box-shadow .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
  }
  .card:hover{box-shadow:var(--sh-3);border-color:var(--neutral);transform:translateY(-2px);}
  .icon-box{
    display:inline-flex;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:12px;background:var(--brand-soft);color:var(--brand);flex:none;
  }
  .section-title{display:flex;align-items:center;gap:12px;font-size:24px;line-height:1.35;}
  .section-title::before{content:"";width:4px;height:18px;border-radius:2px;background:var(--brand);flex:none;}
  @media(min-width:1024px){.section-title{font-size:26px;}}
  .eyebrow{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand);text-transform:uppercase;}

  /* 步骤轴 */
  .step-item{display:grid;grid-template-columns:40px 1fr;gap:18px;}
  @media(min-width:768px){.step-item{grid-template-columns:48px 1fr;gap:24px;}}
  .step-axis{display:flex;flex-direction:column;align-items:center;}
  .step-num{
    display:grid;place-items:center;width:40px;height:40px;border-radius:9999px;
    background:var(--brand);color:#fff;font-size:16px;font-weight:700;
    box-shadow:0 6px 16px -8px rgba(22,82,240,.6);
  }
  @media(min-width:768px){.step-num{width:48px;height:48px;font-size:18px;}}
  .step-line{flex:1;width:2px;background:var(--line);margin-top:10px;}
  .step-item:last-child .step-line{display:none;}
  .step-body{padding-bottom:26px;}
  .step-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
    padding:20px 22px;box-shadow:var(--sh-1);
    transition:box-shadow .18s ease-out,border-color .18s ease-out;
  }
  .step-card:hover{box-shadow:var(--sh-2);border-color:#D8E2F2;}
  .step-card h3{font-size:18px;line-height:1.4;}
  .step-card p{margin-top:8px;font-size:15px;line-height:1.85;}
  .step-points{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px;}
  .step-points li{
    display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:9999px;
    background:var(--page);border:1px solid var(--line);font-size:12px;color:var(--muted);
  }
  .step-points li::before{content:"";width:5px;height:5px;border-radius:9999px;background:var(--accent);}

  /* FAQ */
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
    box-shadow:var(--sh-1);overflow:hidden;
  }
  .faq-item + .faq-item{margin-top:12px;}
  .faq-q{
    position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;
    width:100%;padding:18px 20px;font-size:16px;font-weight:600;color:var(--ink);
    cursor:pointer;list-style:none;
  }
  .faq-q::-webkit-details-marker{display:none;}
  .faq-q::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:transparent;}
  .faq-item[open] .faq-q::before{background:var(--brand);}
  .faq-icon{transition:transform .2s ease-out;color:var(--muted);flex:none;}
  .faq-item[open] .faq-icon{transform:rotate(180deg);color:var(--brand);}
  .faq-a{padding:0 20px 20px 20px;font-size:15px;line-height:1.9;color:var(--body-text);}
  .faq-a p + p{margin-top:10px;}

  /* 表单 */
  .field-label{display:block;font-size:13px;color:var(--ink);font-weight:600;margin-bottom:6px;}
  .field-input{
    width:100%;height:44px;border-radius:var(--r-sm);border:1px solid var(--input-line);
    background:#fff;padding:0 14px;font-size:15px;color:var(--ink);
    transition:border-color .18s ease-out,box-shadow .18s ease-out;
  }
  textarea.field-input{height:auto;padding:12px 14px;resize:vertical;line-height:1.7;}
  .field-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(22,82,240,.12);}
  .check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--muted);line-height:1.7;}
  .check-row input{width:16px;height:16px;margin-top:3px;accent-color:var(--brand);flex:none;}

  /* 页脚 */
  .site-footer{background:var(--footer-bg);color:rgba(255,255,255,.72);}
  .footer-title{color:#fff;font-size:14px;font-weight:700;margin-bottom:12px;}
  .footer-link{
    display:block;font-size:14px;color:rgba(255,255,255,.72);
    padding:6px 0;transition:color .18s ease-out,transform .18s ease-out;
  }
  .footer-link:hover{color:#fff;transform:translateX(2px);}

  .link-underline{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
  .link-underline:hover{color:var(--brand-hover);}
  .img-placeholder{background:#EEF2F8;}
  .prose-line{font-size:16px;line-height:1.9;}
  @media(min-width:1024px){.prose-line{font-size:17px;}}

/* roulang page: article */
:root{
  --brand:#1652F0;
  --brand-dark:#0F42C9;
  --brand-soft:#EEF3FF;
  --accent:#FF6A2B;
  --ink:#0F1B2D;
  --text:#3A4A63;
  --muted:#6B7A93;
  --line:#E4EAF3;
  --input:#D6DEEB;
  --canvas:#F6F8FC;
  --footer:#0E1B33;
  --pos:#12B981;
  --neg:#F04438;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(16,32,64,.06);
  --shadow-2:0 10px 30px -12px rgba(16,42,90,.18);
  --shadow-3:0 16px 40px -14px rgba(16,42,90,.26);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--canvas);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block;background:#EEF2F8}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:none;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:rgba(22,82,240,.16)}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px}
@media (min-width:640px){.container-x{padding-left:24px;padding-right:24px}}
@media (min-width:1024px){.container-x{padding-left:32px;padding-right:32px}}

.skip-link{position:absolute;left:-9999px;top:0;background:#fff;color:var(--brand);padding:10px 16px;border-radius:0 0 10px 0;z-index:99}
.skip-link:focus{left:0}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out}
.site-header.is-scrolled{box-shadow:0 10px 28px -20px rgba(16,42,90,.35)}
.brand-text{font-weight:700;color:var(--ink);letter-spacing:-.01em}
.nav-link{position:relative;display:inline-flex;align-items:center;height:48px;font-size:14px;font-weight:500;color:var(--text);transition:color .18s ease-out}
.nav-link:hover{color:var(--brand)}
.nav-link.is-active{color:var(--ink);font-weight:700}
.nav-link.is-active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--accent)}
.search-input{width:100%;height:42px;border-radius:10px;border:1px solid var(--input);background:#fff;padding:0 14px 0 40px;font-size:14px;color:var(--ink);transition:border-color .18s ease-out,box-shadow .18s ease-out}
.search-input::placeholder{color:#9AA8BF}
.search-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(22,82,240,.12)}
.search-icon{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:#9AA8BF;pointer-events:none;display:inline-flex}
.pill{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;background:var(--canvas);border:1px solid var(--line);font-size:12px;color:var(--muted);transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out}
.pill:hover{background:var(--brand-soft);border-color:#C9D4E6;color:var(--brand)}
.hamburger{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:44px;height:44px;border-radius:10px;border:1px solid var(--input);background:#fff;padding:0 11px;transition:border-color .18s ease-out}
.hamburger span{display:block;height:2px;border-radius:2px;background:var(--ink);transition:background .18s ease-out}
.hamburger:hover{border-color:var(--brand)}
.hamburger:hover span{background:var(--brand)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 24px;border-radius:10px;font-size:15px;font-weight:600;border:1px solid transparent;transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:var(--input);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.text-cta{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.text-cta svg{transition:transform .18s ease-out}
.text-cta:hover svg{transform:translateX(3px)}

/* ---------- drawer ---------- */
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(88vw,360px);background:#fff;z-index:70;display:flex;flex-direction:column;transform:translateX(105%);transition:transform .26s ease-out;box-shadow:-16px 0 40px -22px rgba(16,42,90,.4)}
.drawer.is-open{transform:translateX(0)}
.drawer-mask{position:fixed;inset:0;background:rgba(15,27,45,.45);z-index:60;opacity:0;pointer-events:none;transition:opacity .26s ease-out}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer-group{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--muted);margin:22px 0 8px}
.drawer-link{display:flex;align-items:center;justify-content:space-between;height:48px;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink)}
.drawer-link:hover{color:var(--brand)}
.drawer-link span{color:#C9D4E6}
.close-btn{width:44px;height:44px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--input);color:var(--ink)}
.close-btn:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- generic ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1;padding:6px 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-weight:600}
.badge-time{background:var(--canvas);color:var(--muted);font-weight:500}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-1);transition:box-shadow .2s ease-out,border-color .2s ease-out,transform .2s ease-out}
.card:hover{box-shadow:var(--shadow-3);border-color:#C9D4E6;transform:translateY(-2px)}
.sec-title{position:relative;padding-left:16px;font-size:24px;line-height:1.35;font-weight:700;color:var(--ink)}
.sec-title::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;background:var(--brand)}
.divider{height:1px;background:var(--line)}

/* ---------- breadcrumb ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.crumb a{transition:color .16s ease-out}
.crumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.crumb .sep{color:#C9D4E6}

/* ---------- article ---------- */
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--muted)}
.meta-row .bar{width:1px;height:12px;background:var(--line)}
.article-body{font-size:17px;line-height:1.9;color:var(--text);word-break:break-word}
.article-body>*+*{margin-top:1.1em}
.article-body h2{position:relative;padding-left:16px;margin-top:32px;margin-bottom:16px;font-size:24px;line-height:1.35;font-weight:700;color:var(--ink);scroll-margin-top:100px}
.article-body h2::before{content:"";position:absolute;left:0;top:.26em;bottom:.26em;width:4px;border-radius:2px;background:var(--brand)}
.article-body h3{margin-top:26px;margin-bottom:10px;font-size:20px;line-height:1.45;font-weight:600;color:var(--ink);scroll-margin-top:100px}
.article-body h4{margin-top:20px;margin-bottom:8px;font-size:17px;font-weight:600;color:var(--ink)}
.article-body p{margin:0}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body ul{list-style:disc;padding-left:1.3em}
.article-body ol{list-style:decimal;padding-left:1.4em}
.article-body li{margin:.42em 0}
.article-body ul li::marker{color:var(--brand)}
.article-body ol li::marker{color:var(--brand);font-weight:700}
.article-body img{border-radius:12px;margin:22px auto;background:#EEF2F8}
.article-body figure{margin:22px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-body blockquote{border-left:3px solid var(--brand);background:var(--brand-soft);padding:16px 20px;border-radius:0 12px 12px 0;color:#2D3D57;font-size:16px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:20px 0;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.article-body th{background:var(--canvas);color:var(--ink);font-weight:600;white-space:nowrap}
.article-body tbody tr{transition:background .16s ease-out}
.article-body tbody tr:hover{background:#FAFCFF}
.article-body code{background:var(--canvas);border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:14px}
.article-body hr{border:none;border-top:1px solid var(--line);margin:28px 0}

.featured-media{aspect-ratio:16/9;width:100%;object-fit:cover;border-radius:16px;border:1px solid var(--line)}

.toc{position:sticky;top:96px;width:100%;max-width:220px}
.toc-title{font-size:13px;font-weight:700;color:var(--ink);letter-spacing:.06em;margin-bottom:10px}
.toc a{display:block;font-size:14px;line-height:1.5;color:var(--muted);padding:6px 0 6px 12px;border-left:2px solid var(--line);transition:color .16s ease-out,border-color .16s ease-out}
.toc a:hover{color:var(--brand)}
.toc a.is-current{color:var(--brand);border-left-color:var(--accent);font-weight:600}
.toc a.toc-h3{padding-left:24px;font-size:13px}

.empty-panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:52px 24px;text-align:center}
.empty-icon{width:52px;height:52px;border-radius:14px;background:var(--brand-soft);color:var(--brand);display:inline-flex;align-items:center;justify-content:center}

.rel-card{overflow:hidden;display:flex;flex-direction:column;height:100%}
.rel-thumb{aspect-ratio:16/9;width:100%;object-fit:cover;background:#EEF2F8}

.tag-link{display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;background:var(--canvas);border:1px solid var(--line);font-size:13px;color:var(--text);transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out}
.tag-link:hover{background:var(--brand-soft);border-color:#C9D4E6;color:var(--brand)}

/* ---------- footer ---------- */
.site-footer{background:var(--footer);color:rgba(255,255,255,.72);margin-top:72px}
.footer-title{color:#fff;font-size:14px;font-weight:700;margin-bottom:14px}
.footer-link{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:5px 0;transition:color .16s ease-out,transform .16s ease-out}
.footer-link:hover{color:#fff;transform:translateX(2px)}

@media (max-width:1023px){
  .site-footer{margin-top:56px}
}

/* roulang page: category2 */
:root{
  --brand:#1652F0;
  --brand-hover:#0F42C9;
  --brand-soft:#EEF3FF;
  --accent:#FF6A2B;
  --ink:#0F1B2D;
  --body:#3A4A63;
  --muted:#6B7A93;
  --line:#E4EAF3;
  --input:#D6DEEB;
  --page:#F6F8FC;
  --card:#FFFFFF;
  --footer-bg:#0E1B33;
  --pos:#12B981;
  --neg:#F04438;
  --neutral:#C9D4E6;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --sh-1:0 1px 2px rgba(16,32,64,.06);
  --sh-2:0 10px 30px -12px rgba(16,42,90,.18);
  --sh-3:0 16px 40px -14px rgba(16,42,90,.26);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--page);
  color:var(--body);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit}
ul,ol{margin:0;padding:0}
p{margin:0}
h1,h2,h3,h4{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}
@media (min-width:640px){.container-x{padding:0 24px}}
@media (min-width:1024px){.container-x{padding:0 32px}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.site-header.is-scrolled{box-shadow:0 10px 26px -18px rgba(16,42,90,.42)}
.brand-row{height:72px;transition:height .2s ease}
.site-header.is-scrolled .brand-row{height:62px}
.logo-mark{width:32px;height:32px;border-radius:10px;background:var(--brand);display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.logo-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em;line-height:1.2}
.logo-text-sm{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.search-box{display:flex;align-items:center;gap:8px;height:44px;padding:0 16px;border:1px solid var(--input);border-radius:999px;background:#fff;transition:border-color .18s ease,box-shadow .18s ease}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(22,82,240,.12)}
.search-box input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:14px;color:var(--ink)}
.search-box input::placeholder{color:var(--muted)}
.chip{display:inline-flex;align-items:center;height:26px;padding:0 10px;border:1px solid var(--line);border-radius:999px;background:var(--page);font-size:12px;color:var(--muted);transition:color .18s ease,background .18s ease,border-color .18s ease}
.chip:hover{color:var(--brand);background:var(--brand-soft);border-color:#C9D8FF}
.hot-label{font-size:12px;color:var(--muted)}
.nav-link{display:inline-flex;align-items:center;height:48px;font-size:14px;color:var(--body);border-bottom:2px solid transparent;transition:color .18s ease,border-color .18s ease,background .18s ease}
.nav-link:hover{color:var(--brand);border-bottom-color:#BCCEFF}
.nav-link.is-active{color:var(--ink);font-weight:700;border-bottom-color:var(--accent)}
.menu-btn{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;color:var(--ink);cursor:pointer;transition:border-color .18s ease,color .18s ease}
.menu-btn:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- drawer ---------- */
.drawer{position:fixed;top:0;right:0;z-index:60;width:min(88vw,360px);height:100%;background:#fff;transform:translateX(102%);transition:transform .25s ease;box-shadow:-16px 0 44px -24px rgba(16,42,90,.55);overflow-y:auto}
.drawer.is-open{transform:translateX(0)}
.drawer-mask{position:fixed;inset:0;z-index:55;background:rgba(15,27,45,.45);opacity:0;pointer-events:none;transition:opacity .25s ease}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer-link{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 14px;border-radius:var(--r-md);font-size:15px;color:var(--ink);transition:background .18s ease,color .18s ease}
.drawer-link:hover{background:var(--brand-soft);color:var(--brand)}
.drawer-link.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.drawer-label{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--muted);margin:22px 0 10px}

/* ---------- buttons ---------- */
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border:0;border-radius:var(--r-sm);background:var(--brand);color:#fff;font-size:15px;font-weight:600;cursor:pointer;transition:background .18s ease,transform .18s ease,box-shadow .18s ease}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);box-shadow:0 12px 26px -14px rgba(22,82,240,.75)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border:1px solid var(--input);border-radius:var(--r-sm);background:#fff;color:var(--ink);font-size:15px;font-weight:600;cursor:pointer;transition:border-color .18s ease,color .18s ease,transform .18s ease}
.btn-secondary:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-secondary:active{transform:translateY(0)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);margin-top:auto;padding-top:16px}
.text-link span{transition:transform .18s ease}
.text-link:hover span{transform:translateX(3px)}
.text-link:hover{text-decoration:underline;text-underline-offset:3px}

/* ---------- badges ---------- */
.badge-brand{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600}
.badge-time{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--page);color:var(--muted);font-size:12px}

/* ---------- hero ---------- */
.hero-band{background:#fff;border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.breadcrumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.breadcrumb .sep{color:var(--neutral)}
.hero-title{font-size:clamp(28px,3.8vw,40px);line-height:1.25;font-weight:800;color:var(--ink);letter-spacing:-.02em;margin-top:16px}
.lead{font-size:17px;line-height:1.85;color:var(--body);margin-top:16px;max-width:660px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-points li{list-style:none;font-size:13px;color:var(--body);background:var(--page);border:1px solid var(--line);border-radius:999px;padding:6px 14px}
.hero-figure{margin:0;border-radius:20px;overflow:hidden;border:1px solid var(--line);background:#EEF2F8}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#EEF2F8}

/* ---------- metrics ---------- */
.metric{padding:20px;border-radius:var(--r-lg);background:#fff;border:1px solid var(--line);box-shadow:var(--sh-1);height:100%}
.metric-num{font-size:34px;font-weight:700;color:var(--ink);letter-spacing:-.02em;line-height:1.1}
.metric-num em{font-style:normal;font-size:15px;color:var(--muted);font-weight:500;margin-left:6px}
.metric-label{font-size:14px;font-weight:600;color:var(--ink);margin-top:10px}
.metric-desc{font-size:13px;color:var(--muted);margin-top:4px;line-height:1.7}

/* ---------- sections ---------- */
.section-title{position:relative;font-size:24px;font-weight:700;color:var(--ink);padding-left:16px;line-height:1.35}
.section-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand)}
@media (min-width:1024px){.section-title{font-size:26px}}
.section-sub{font-size:15px;color:var(--muted);margin-top:10px;max-width:760px;line-height:1.8}
.band-white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- side nav ---------- */
.side-sticky{position:sticky;top:112px}
.side-title{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--muted);margin-bottom:10px}
.side-nav{border-top:1px solid var(--line)}
.side-link{display:block;padding:11px 12px 11px 14px;font-size:14px;color:var(--body);border-bottom:1px solid var(--line);border-left:2px solid transparent;transition:color .18s ease,background .18s ease,border-color .18s ease}
.side-link:hover{color:var(--brand);background:var(--brand-soft)}
.side-link.is-current{color:var(--brand);font-weight:600;border-left-color:var(--accent);background:var(--brand-soft)}
.side-card{margin-top:20px;padding:18px;border-radius:var(--r-lg);background:#fff;border:1px solid var(--line);box-shadow:var(--sh-1)}
.side-card p{font-size:13px;color:var(--muted);line-height:1.8}
.side-card a{display:inline-flex;align-items:center;gap:6px;margin-top:12px;font-size:14px;font-weight:600;color:var(--brand)}
.side-card a:hover{text-decoration:underline;text-underline-offset:3px}

/* ---------- info cards ---------- */
.info-card{display:flex;flex-direction:column;height:100%;padding:22px;border-radius:var(--r-lg);background:#fff;border:1px solid var(--line);box-shadow:var(--sh-1);transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease}
.info-card:hover{box-shadow:var(--sh-3);transform:translateY(-2px);border-color:var(--neutral)}
.icon-box{width:40px;height:40px;border-radius:var(--r-md);background:var(--brand-soft);color:var(--brand);display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.info-card h3{font-size:18px;font-weight:600;color:var(--ink);margin-top:16px;line-height:1.4}
.card-desc{font-size:14px;color:var(--body);margin-top:8px;line-height:1.75}
.point-list{margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
.point-list li{list-style:none;position:relative;padding-left:18px;font-size:14px;color:var(--body);line-height:1.9}
.point-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--brand)}

/* ---------- steps ---------- */
.step-list{list-style:none}
.step-item{display:flex;gap:18px;padding:20px 0;border-bottom:1px dashed var(--line)}
.step-item:last-child{border-bottom:0}
.step-num{flex:0 0 40px;height:40px;border-radius:50%;background:var(--brand);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:700}
.step-item h3{font-size:17px;font-weight:600;color:var(--ink);line-height:1.45}
.step-item p{font-size:14px;color:var(--body);margin-top:6px;line-height:1.8}
.media-figure{margin:0;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:#EEF2F8;box-shadow:var(--sh-1)}
.media-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#EEF2F8}
.media-figure figcaption{padding:12px 16px;background:#fff;font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-btn{position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;padding:18px 20px;background:none;border:0;text-align:left;font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;transition:background .18s ease,color .18s ease}
.faq-btn:hover{background:var(--brand-soft)}
.faq-btn[aria-expanded="true"]::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:2px;background:var(--brand)}
.faq-icon{flex:0 0 auto;color:var(--muted);transition:transform .2s ease,color .2s ease}
.faq-btn[aria-expanded="true"] .faq-icon{transform:rotate(180deg);color:var(--brand)}
.faq-panel{display:none;padding:0 20px 20px;font-size:15px;color:var(--body);line-height:1.85}
.faq-panel.is-open{display:block}

/* ---------- CTA ---------- */
.cta-band{background:var(--brand-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta-band h2{font-size:24px;font-weight:700;color:var(--ink);line-height:1.35}
.cta-band p{font-size:15px;color:var(--body);margin-top:8px;max-width:620px;line-height:1.8}

/* ---------- footer ---------- */
.site-footer{background:var(--footer-bg);color:rgba(255,255,255,.72)}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:12px}
.footer-link{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:5px 0;transition:color .18s ease,transform .18s ease}
.footer-link:hover{color:#fff;transform:translateX(2px)}

@media (max-width:639px){
  .hero-title{font-size:27px}
  .metric-num{font-size:30px}
  .info-card{padding:18px}
}

/* roulang page: category3 */
:root{
  --brand:#1652F0;
  --brand-hover:#0F42C9;
  --brand-soft:#EEF3FF;
  --accent:#FF6A2B;
  --ink:#0F1B2D;
  --text:#3A4A63;
  --muted:#6B7A93;
  --line:#E4EAF3;
  --line-strong:#C9D4E6;
  --input:#D6DEEB;
  --canvas:#F6F8FC;
  --card:#FFFFFF;
  --footer:#0E1B33;
  --ok:#12B981;
  --ok-bg:#E9F9F2;
  --ok-text:#0E9E6E;
  --warn:#F04438;
  --warn-bg:#FFF3EC;
  --warn-text:#D9601F;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --sh-1:0 1px 2px rgba(16,32,64,.06);
  --sh-2:0 10px 30px -12px rgba(16,42,90,.18);
  --sh-3:0 16px 40px -14px rgba(16,42,90,.26);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.78;
  color:var(--text);
  background:var(--canvas);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:1.15em}
li{margin:6px 0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:var(--brand-soft);color:var(--brand)}
.container-x{max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px}
@media (min-width:768px){.container-x{padding-left:24px;padding-right:24px}}
@media (min-width:1024px){.container-x{padding-left:32px;padding-right:32px}}

/* ---------- 基础排版 ---------- */
.h2-bar{position:relative;padding-left:16px;font-size:clamp(22px,2.5vw,27px);font-weight:700;line-height:1.35;color:var(--ink);letter-spacing:-.01em}
.h2-bar::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand)}
.h3-sm{font-size:19px;font-weight:600;line-height:1.45;color:var(--ink)}
.lead-text{font-size:16px;line-height:1.85;color:var(--text)}
.mini-text{font-size:13px;line-height:1.7;color:var(--muted)}
.num{font-variant-numeric:tabular-nums;letter-spacing:-.02em}

/* ---------- 头部与导航 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out}
.site-header.is-scrolled{box-shadow:0 8px 26px -16px rgba(16,42,90,.35)}
.header-top{display:flex;align-items:center;gap:14px;padding:14px 0;transition:padding .2s ease-out}
.site-header.is-scrolled .header-top{padding:9px 0}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:10px;background:var(--brand);flex-shrink:0}
.brand-name{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.search-wrap{display:none;flex:1;max-width:360px;margin-left:8px}
@media (min-width:1024px){.search-wrap{display:block}}
.search-box{position:relative;width:100%}
.search-box input{width:100%;height:42px;border:1px solid var(--input);border-radius:var(--r-sm);background:#FBFCFE;padding:0 14px 0 40px;font-size:14px;color:var(--ink);transition:border-color .18s ease-out,box-shadow .18s ease-out,background .18s ease-out}
.search-box input::placeholder{color:#93A1B8}
.search-box input:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(22,82,240,.12)}
.search-icon{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--muted);pointer-events:none}
.hot-chips{display:none;align-items:center;gap:8px}
@media (min-width:1280px){.hot-chips{display:flex}}
.chip{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;font-size:12px;color:var(--text);background:var(--canvas);border:1px solid var(--line);transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out}
.chip:hover{background:var(--brand-soft);color:var(--brand);border-color:#CFDCFC}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);color:var(--ink);margin-left:auto;transition:border-color .18s ease-out,background .18s ease-out}
.nav-toggle:hover{border-color:var(--line-strong);background:var(--canvas)}
@media (min-width:1024px){.nav-toggle{display:none}}
.nav-link{position:relative;display:inline-flex;align-items:center;height:52px;font-size:14px;color:var(--text);white-space:nowrap;transition:color .18s ease-out}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;border-radius:2px;background:transparent;transition:background .18s ease-out}
.nav-link:hover{color:var(--brand)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{background:var(--accent)}

/* ---------- 按钮与徽章 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-sm);font-size:15px;font-weight:600;border:1px solid transparent;white-space:nowrap;transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 26px -16px rgba(22,82,240,.72)}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);box-shadow:0 16px 32px -18px rgba(22,82,240,.8)}
.btn-ghost{background:#fff;border-color:var(--input);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-light{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.btn-light:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.btn-link svg{transition:transform .18s ease-out}
.btn-link:hover svg{transform:translateX(3px)}
.badge{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;line-height:1}
.badge-ok{background:var(--ok-bg);color:var(--ok-text)}
.badge-warn{background:var(--warn-bg);color:var(--warn-text)}
.badge-soft{background:var(--brand-soft);color:var(--brand)}
.badge-muted{background:var(--canvas);color:var(--muted);border:1px solid var(--line)}
.dot{width:6px;height:6px;border-radius:50%;background:currentColor;display:inline-block}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background-color:var(--footer);background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;color:#fff}
.hero::before{content:"";position:absolute;inset:0;background:rgba(11,23,44,.88)}
.hero .container-x{position:relative;z-index:1}
.hero-inner{padding:56px 0 60px}
@media (min-width:1024px){.hero-inner{padding:92px 0 96px}}
.hero-badge{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 12px;border-radius:999px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);font-size:12.5px;color:rgba(255,255,255,.86)}
.hero h1{margin-top:20px;font-size:clamp(30px,4.2vw,46px);line-height:1.2;font-weight:800;letter-spacing:-.02em;color:#fff;max-width:820px}
.hero-lead{margin-top:20px;max-width:660px;font-size:16.5px;line-height:1.85;color:rgba(255,255,255,.82)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-tags{display:flex;flex-wrap:wrap;gap:20px;margin-top:26px}
.hero-tag{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.78)}
.hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block}

/* ---------- 板块 ---------- */
.section{padding-top:48px;padding-bottom:48px}
@media (min-width:1024px){.section{padding-top:76px;padding-bottom:76px}}
.section-sep{border-top:1px solid var(--line)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px}
.section-desc{margin-top:12px;max-width:760px;font-size:15px;line-height:1.85;color:var(--text)}

/* ---------- 指标条 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
@media (min-width:1024px){.metric-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}}
.metric-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:20px 22px;box-shadow:var(--sh-1);transition:box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out}
.metric-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:var(--line-strong)}
.metric-label{font-size:13px;color:var(--muted)}
.metric-value{display:flex;align-items:baseline;gap:6px;margin-top:10px}
.metric-value strong{font-size:32px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.metric-value span{font-size:13.5px;color:var(--muted)}
.metric-note{margin-top:10px;font-size:13px;color:var(--muted)}

/* ---------- 功能对照表 ---------- */
.asym-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:1024px){.asym-grid{grid-template-columns:296px minmax(0,1fr);gap:32px}}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-1)}
.side-list{margin-top:16px;list-style:none;padding:0}
.side-list li{margin:0;border-bottom:1px solid var(--line)}
.side-list li:last-child{border-bottom:0}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 0;font-size:14px;color:var(--text);transition:color .18s ease-out,padding-left .18s ease-out}
.side-list a:hover{color:var(--brand);padding-left:4px}
.side-list a span.n{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.table-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden}
.fn-table{width:100%;border-collapse:collapse;font-size:15px}
.fn-table thead th{background:var(--canvas);color:var(--muted);font-size:13px;font-weight:600;text-align:left;padding:14px 20px;border-bottom:1px solid var(--line);white-space:nowrap}
.fn-table tbody td{padding:18px 20px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--text)}
.fn-table tbody tr:last-child td{border-bottom:0}
.fn-table tbody tr{transition:background .18s ease-out}
.fn-table tbody tr:hover{background:#FBFCFE}
.fn-table td.dim{font-weight:600;color:var(--ink);white-space:nowrap}
.fn-mobile{display:block;padding:16px}
@media (min-width:1024px){.fn-mobile{display:none}}
.fn-desktop{display:none}
@media (min-width:1024px){.fn-desktop{display:block}}
.fn-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);padding:16px;margin-bottom:12px;box-shadow:var(--sh-1)}
.fn-item:last-child{margin-bottom:0}
.fn-item-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}
.side-figure{margin-top:18px;border-radius:var(--r-md);overflow:hidden;background:#EEF2F8}
.side-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}

/* ---------- 图文区 ---------- */
.split{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
@media (min-width:1024px){.split{grid-template-columns:1fr 1fr;gap:48px}}
.figure-frame{border-radius:18px;overflow:hidden;background:#EEF2F8;border:1px solid var(--line);box-shadow:var(--sh-2)}
.figure-frame img{width:100%;aspect-ratio:4/3;object-fit:cover}
.step-list{list-style:none;padding:0;margin-top:22px;counter-reset:step}
.step-list li{position:relative;padding-left:46px;margin:0 0 18px;font-size:15.5px;line-height:1.8;color:var(--text)}
.step-list li:last-child{margin-bottom:0}
.step-list li::before{counter-increment:step;content:counter(step);position:absolute;left:0;top:2px;width:28px;height:28px;border-radius:50%;background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center}
.step-list strong{color:var(--ink);font-weight:600}

/* ---------- 长条卡 ---------- */
.long-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:1024px){.long-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}}
.long-card{display:flex;flex-direction:column;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-1);transition:box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out}
.long-card:hover{box-shadow:var(--sh-3);transform:translateY(-2px);border-color:var(--line-strong)}
.icon-box{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--r-md);background:var(--brand-soft);color:var(--brand);flex-shrink:0}
.long-card p{font-size:14.5px;line-height:1.8;color:var(--text)}
.long-card .foot{margin-top:auto;padding-top:4px}

/* ---------- FAQ ---------- */
.faq-wrap{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line);position:relative}
.faq-item:last-child{border-bottom:0}
.faq-item::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;background:transparent;border-radius:0 2px 2px 0;transition:background .18s ease-out}
.faq-item.is-open::before{background:var(--brand)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);transition:color .18s ease-out,background .18s ease-out}
.faq-q:hover{color:var(--brand)}
.faq-q span.q{display:block}
.faq-icon{flex-shrink:0;color:var(--muted);transition:transform .2s ease-out,color .2s ease-out}
.faq-item.is-open .faq-icon{transform:rotate(180deg);color:var(--brand)}
.faq-a{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--text)}
.faq-a p + p{margin-top:10px}

/* ---------- CTA 与表单 ---------- */
.cta-band{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:1024px){.cta-grid{grid-template-columns:1fr 1fr;gap:56px;align-items:start}}
.point-list{list-style:none;padding:0;margin-top:20px}
.point-list li{position:relative;padding-left:24px;margin:0 0 12px;font-size:15px;line-height:1.8;color:var(--text)}
.point-list li::before{content:"";position:absolute;left:4px;top:11px;width:8px;height:8px;border-radius:2px;background:var(--brand)}
.contact-row{display:flex;flex-wrap:wrap;gap:20px;margin-top:22px;font-size:13.5px;color:var(--muted)}
.form-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-2)}
@media (min-width:768px){.form-card{padding:28px}}
.form-field{margin-bottom:16px}
.form-label{display:block;font-size:13px;font-weight:600;color:#4A5A73;margin-bottom:7px}
.form-control{width:100%;height:44px;border:1px solid var(--input);border-radius:var(--r-sm);background:#fff;padding:0 14px;font-size:15px;color:var(--ink);transition:border-color .18s ease-out,box-shadow .18s ease-out}
select.form-control{appearance:none;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%236B7A93' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:38px}
textarea.form-control{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical}
.form-control:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(22,82,240,.12)}
.checkbox-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;line-height:1.7;color:var(--muted)}
.checkbox-row input{width:16px;height:16px;margin-top:3px;accent-color:var(--brand)}
.form-note{margin-top:12px;font-size:12.5px;color:var(--muted)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);color:rgba(255,255,255,.72)}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-link{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:5px 0;transition:color .18s ease-out,transform .18s ease-out}
.footer-link:hover{color:#fff;transform:translateX(-2px)}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(15,27,45,.45);z-index:70;opacity:0;pointer-events:none;transition:opacity .2s ease-out}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(88vw,360px);background:#fff;z-index:80;padding:20px;overflow-y:auto;transform:translateX(101%);transition:transform .25s ease-out;box-shadow:-18px 0 40px -30px rgba(16,42,90,.6)}
.drawer.is-open{transform:translateX(0)}
.drawer-close{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);color:var(--ink)}
.drawer-close:hover{background:var(--canvas)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-link{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 2px;font-size:15px;color:var(--text);border-bottom:1px solid var(--line);transition:color .18s ease-out,padding-left .18s ease-out}
.drawer-link:hover{color:var(--brand);padding-left:4px}
.drawer-link.is-active{color:var(--ink);font-weight:600}
.drawer-link .left{display:flex;align-items:center;gap:10px}
.drawer-link .ic{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:9px;background:var(--brand-soft);color:var(--brand);flex-shrink:0}

/* roulang page: category4 */
:root{
    --brand:#1652F0; --brand-hover:#0F42C9; --brand-soft:#EEF3FF;
    --accent:#FF6A2B; --pos:#12B981; --neg:#F04438; --neutral:#C9D4E6;
    --ink:#0F1B2D; --body-text:#3A4A63; --muted:#6B7A93;
    --line:#E4EAF3; --input-line:#D6DEEB; --canvas:#F6F8FC; --card:#FFFFFF;
    --footer-bg:#0E1B33;
    --r-lg:16px; --r-md:12px; --r-sm:10px;
    --sh-1:0 1px 2px rgba(16,32,64,.06);
    --sh-2:0 10px 30px -12px rgba(16,42,90,.18);
    --sh-3:0 16px 40px -14px rgba(16,42,90,.26);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;background:var(--canvas);color:var(--body-text);
    font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;line-height:1.8;
    font-variant-numeric:tabular-nums;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
  ul,ol{list-style:none}
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none;transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,transform .18s ease-out}
  a:hover{color:var(--brand)}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  input,select,textarea{font:inherit;color:inherit}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

  .container-x{max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px}
  @media (min-width:640px){.container-x{padding-left:24px;padding-right:24px}}
  @media (min-width:1024px){.container-x{padding-left:32px;padding-right:32px}}

  /* ============ Header ============ */
  .site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out}
  .site-header.is-scrolled{box-shadow:0 6px 22px -14px rgba(16,42,90,.32)}
  .brand-row{display:flex;align-items:center;gap:16px;padding-top:12px;padding-bottom:12px;transition:padding .2s ease-out}
  .site-header.is-scrolled .brand-row{padding-top:8px;padding-bottom:8px}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .brand-mark{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:10px;background:var(--brand);flex-shrink:0}
  .brand-text{font-size:17px;font-weight:800;letter-spacing:.01em;color:var(--ink)}
  .brand:hover .brand-text{color:var(--brand)}
  .search-box{display:flex;align-items:center;gap:8px;height:40px;padding:0 12px;border:1px solid var(--input-line);border-radius:10px;background:var(--canvas);transition:border-color .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out}
  .search-box:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(22,82,240,.12)}
  .search-box input{border:0;background:transparent;outline:none;width:100%;font-size:14px}
  .search-box input::placeholder{color:var(--muted)}
  .hot-tag{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;border:1px solid var(--line);background:var(--canvas);font-size:12px;color:var(--muted)}
  .hot-tag:hover{background:var(--brand-soft);border-color:#C9D8FF;color:var(--brand)}
  .nav-link{position:relative;display:inline-flex;align-items:center;height:48px;padding:0 10px;font-size:14px;color:var(--body-text);border-bottom:2px solid transparent}
  .nav-link:hover{color:var(--brand);background:var(--brand-soft)}
  .nav-link.is-active{color:var(--ink);font-weight:700;border-bottom-color:var(--accent)}
  .nav-link.is-active:hover{background:transparent}
  .hamburger{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:#fff}

  /* Drawer */
  .overlay{position:fixed;inset:0;background:rgba(15,27,45,.45);opacity:0;visibility:hidden;transition:opacity .22s ease-out,visibility .22s;z-index:55}
  .overlay.is-open{opacity:1;visibility:visible}
  .drawer{position:fixed;top:0;right:0;height:100%;width:min(86vw,340px);background:#fff;z-index:60;transform:translateX(100%);transition:transform .26s ease-out;overflow-y:auto;padding:20px}
  .drawer.is-open{transform:translateX(0)}
  .drawer-link{display:flex;align-items:center;justify-content:space-between;padding:13px 12px;border-radius:10px;font-size:15px;color:var(--ink);border-bottom:1px solid var(--line)}
  .drawer-link:hover{background:var(--brand-soft);color:var(--brand)}

  /* ============ Buttons & badges ============ */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:10px;font-size:15px;font-weight:600;transition:transform .16s ease-out,box-shadow .16s ease-out,background-color .16s ease-out,color .16s ease-out,border-color .16s ease-out}
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px -12px rgba(22,82,240,.7)}
  .btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(0)}
  .btn-outline{background:#fff;border:1px solid var(--input-line);color:var(--ink)}
  .btn-outline:hover{border-color:var(--brand);color:var(--brand)}
  .btn-sm{height:38px;padding:0 16px;font-size:14px}
  .link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
  .link-arrow span{transition:transform .16s ease-out}
  .link-arrow:hover span{transform:translateX(3px)}

  .badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;line-height:1}
  .badge-brand{background:var(--brand-soft);color:var(--brand)}
  .badge-accent{background:#FFF1E9;color:#D9541B}
  .badge-gray{background:var(--canvas);color:var(--muted);border:1px solid var(--line)}
  .badge-pos{background:#E9F9F2;color:#0E9E6E}

  /* ============ Banner ============ */
  .page-banner{position:relative;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;background-color:#0E1B33}
  .page-banner::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,24,48,.94) 0%,rgba(12,30,60,.86) 55%,rgba(14,32,64,.72) 100%)}
  .page-banner > .container-x{position:relative;z-index:2;padding-top:44px;padding-bottom:48px}
  @media (min-width:1024px){.page-banner > .container-x{padding-top:64px;padding-bottom:68px}}
  .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62)}
  .crumb a:hover{color:#fff}
  .banner-title{font-size:clamp(28px,3.6vw,42px);line-height:1.25;font-weight:800;letter-spacing:-.01em;color:#fff;margin-top:14px}
  .banner-sub{margin-top:14px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.82);max-width:660px}

  /* ============ Sections ============ */
  .section{padding-top:48px;padding-bottom:48px}
  @media (min-width:1024px){.section{padding-top:76px;padding-bottom:76px}}
  .section-title{display:flex;align-items:center;font-size:24px;line-height:1.35;font-weight:700;color:var(--ink);letter-spacing:-.01em}
  .section-title::before{content:"";display:block;width:4px;height:18px;border-radius:2px;background:var(--brand);margin-right:12px}
  @media (min-width:1024px){.section-title{font-size:27px}}
  .section-desc{margin-top:12px;font-size:15px;color:var(--muted);max-width:760px}
  .card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out}
  .card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:var(--neutral)}
  .card-static:hover{box-shadow:var(--sh-1);transform:none;border-color:var(--line)}

  /* 三步自查 */
  .steps-3{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:640px){.steps-3{grid-template-columns:1fr 1fr}}
  @media (min-width:1024px){.steps-3{grid-template-columns:repeat(3,1fr)}}
  .step-card{padding:24px}
  .step-num{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;background:var(--brand-soft);color:var(--brand);font-weight:800;font-size:16px}
  .step-card h3{margin-top:16px;font-size:18px;font-weight:700;color:var(--ink)}
  .step-card p{margin-top:10px;font-size:14px;line-height:1.85;color:var(--body-text)}

  /* ============ FAQ ============ */
  .layout-help{display:grid;grid-template-columns:1fr;gap:28px}
  @media (min-width:1024px){.layout-help{grid-template-columns:minmax(0,1fr) 330px;gap:32px}}
  .faq-group + .faq-group{margin-top:28px}
  .group-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 4px 14px}
  .group-head h2{font-size:20px;font-weight:700;color:var(--ink)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item:last-child{border-bottom:0}
  .faq-q{position:relative;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;width:100%;text-align:left;padding:18px 20px 18px 22px;font-size:16px;font-weight:600;color:var(--ink);line-height:1.7}
  .faq-q::before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:2px;background:transparent;transition:background-color .18s ease-out}
  .faq-q:hover{color:var(--brand)}
  .faq-item.is-open .faq-q::before{background:var(--brand)}
  .faq-item.is-open .faq-q{color:var(--brand)}
  .faq-ico{flex-shrink:0;width:24px;height:24px;display:inline-flex;align-items:center;justify-content:center;color:var(--muted);transition:transform .2s ease-out,color .2s ease-out}
  .faq-item.is-open .faq-ico{transform:rotate(180deg);color:var(--brand)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease-out}
  .faq-a-inner{padding:0 20px 20px 22px;font-size:15px;line-height:1.9;color:var(--body-text)}
  .faq-a-inner ul{margin-top:10px;display:grid;gap:8px}
  .faq-a-inner li{position:relative;padding-left:16px}
  .faq-a-inner li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--brand)}

  /* 热门条目 */
  .aside-card{padding:20px}
  .aside-cover{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;background:#EEF2F8}
  .hot-item{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--line)}
  .hot-item:last-child{border-bottom:0;padding-bottom:0}
  .hot-item:first-of-type{padding-top:0}
  .hot-thumb{width:72px;height:52px;flex-shrink:0;border-radius:10px;object-fit:cover;background:#EEF2F8}
  .hot-title{font-size:14px;font-weight:600;color:var(--ink);line-height:1.6}
  .hot-item:hover .hot-title{color:var(--brand)}
  .hot-meta{margin-top:6px;display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}

  /* ============ Form ============ */
  .form-band{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .form-row{display:grid;grid-template-columns:1fr;gap:16px}
  @media (min-width:768px){.form-row{grid-template-columns:repeat(3,minmax(0,1fr))}}
  .field label{display:block;font-size:13px;font-weight:600;color:var(--body-text);margin-bottom:8px}
  .field input,.field select,.field textarea{width:100%;height:44px;padding:0 14px;border:1px solid var(--input-line);border-radius:10px;background:#fff;font-size:15px;outline:none;transition:border-color .18s ease-out,box-shadow .18s ease-out}
  .field textarea{height:auto;min-height:110px;padding:12px 14px;line-height:1.8;resize:vertical}
  .field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(22,82,240,.12)}
  .field input::placeholder,.field textarea::placeholder{color:#9AA7BC}
  .check-row{display:flex;align-items:flex-start;gap:10px;margin-top:18px;font-size:13px;color:var(--muted)}
  .check-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--brand)}
  .form-note{margin-top:14px;font-size:13px;color:var(--muted)}
  .form-success{display:none;margin-top:16px;padding:12px 16px;border-radius:10px;background:#E9F9F2;color:#0E9E6E;font-size:14px}
  .form-success.is-show{display:block}

  /* ============ Footer ============ */
  .site-footer{background:var(--footer-bg);color:#fff}
  .site-footer p{color:rgba(255,255,255,.72)}
  .footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:12px}
  .footer-link{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:6px 0;transition:color .18s ease-out,transform .18s ease-out}
  .footer-link:hover{color:#fff;transform:translateX(2px)}

  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}