/* roulang page: index */
:root{
  --ink:#15181C;
  --ink-2:#242A31;
  --ink-3:#0E1114;
  --steel:#5B6570;
  --line:#DCD8CF;
  --paper:#F7F5F0;
  --mist:#EDEAE3;
  --white:#FFFFFF;
  --volt:#F2C200;
  --volt-deep:#C79B00;
  --alert:#A8452C;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-field:8px;
  --radius-badge:6px;
  --shadow-card:0 1px 2px rgba(21,24,28,.06);
  --shadow-lift:0 18px 40px -24px rgba(21,24,28,.25);
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--ink);}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:48px;padding-right:48px;}
.wide{max-width:1320px;}
.section{padding-top:112px;padding-bottom:112px;}
.section-tight{padding-top:80px;padding-bottom:80px;}
.bg-paper{background:var(--paper);}
.bg-mist{background:var(--mist);}
.bg-white{background:var(--white);}
.bg-ink{background:var(--ink);}
.divider{height:1px;background:var(--line);border:0;}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(21,24,28,.6);}
.nav-wrap{
  max-width:1200px;margin:0 auto;padding:0 48px;
  height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;letter-spacing:.01em;flex-shrink:0;}
.brand-mark{
  width:28px;height:28px;background:var(--volt);border-radius:6px;position:relative;flex-shrink:0;
  clip-path:polygon(0 0,100% 0,100% 62%,62% 100%,0 100%);
}
.brand-mark::after{
  content:"";position:absolute;left:6px;top:19px;width:14px;height:3px;background:var(--ink);border-radius:1px;
}
.brand-name strong{font-weight:800;}
.brand-name span{font-weight:400;color:var(--ink-2);}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-link{
  position:relative;font-size:15px;font-weight:600;color:var(--ink);
  padding:6px 0;display:inline-flex;align-items:center;gap:8px;
  transition:color var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--volt);
  transition:width var(--ease);
}
.nav-link:hover::after,.nav-link:focus-visible::after{width:100%;}
.nav-link.is-active{font-weight:800;}
.nav-link.is-active::before{
  content:"";width:6px;height:6px;background:var(--volt);display:inline-block;
}
.nav-cta{display:flex;align-items:center;gap:12px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--volt);color:var(--ink);}
.btn-primary:hover{background:var(--volt-deep);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-primary:focus-visible{outline:2px solid var(--ink);outline-offset:3px;}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-ghost:focus-visible{outline:2px solid var(--volt-deep);outline-offset:3px;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--ink);
  border-bottom:2px solid transparent;padding-bottom:2px;transition:border-color var(--ease),color var(--ease);
}
.text-link:hover{border-bottom-color:var(--volt);}
.text-link .arrow{transition:transform var(--ease);}
.text-link:hover .arrow{transform:translateX(2px);}

/* 通用标题 */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;font-weight:600;color:var(--steel);text-transform:uppercase;
}
.eyebrow::before{content:"";width:6px;height:6px;background:var(--volt);display:inline-block;}
.h1{font-size:52px;line-height:1.18;font-weight:800;letter-spacing:-.01em;}
.h2{font-size:34px;line-height:1.28;font-weight:700;letter-spacing:-.005em;}
.h3{font-size:19px;line-height:1.45;font-weight:600;}
.lead{font-size:17px;line-height:1.75;color:var(--steel);}
.meta-sm{font-size:13px;line-height:1.6;color:var(--steel);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px;}
.section-head .lead{max-width:560px;margin-top:12px;}

/* Hero */
.hero{padding-top:80px;padding-bottom:96px;background:var(--paper);}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero h1{margin-top:18px;max-width:12em;}
.hero-sub{margin-top:22px;font-size:18px;line-height:1.7;color:var(--steel);max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.trust-row{
  display:flex;align-items:stretch;gap:0;margin-top:44px;
  border-top:1px solid var(--line);padding-top:24px;
}
.trust-item{padding-right:28px;margin-right:28px;border-right:1px solid var(--line);}
.trust-item:last-child{border-right:0;margin-right:0;padding-right:0;}
.trust-num{font-family:'Barlow','Inter',system-ui,sans-serif;font-variant-numeric:tabular-nums;font-size:22px;font-weight:700;line-height:1.2;}
.trust-label{font-size:12px;color:var(--steel);margin-top:4px;}
.hero-frame{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);background:var(--mist);}
.hero-frame img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-frame::before{
  content:"";position:absolute;inset:0;background:rgba(21,24,28,.38);z-index:1;
}
.hero-corner{
  position:absolute;left:0;top:0;z-index:2;width:64px;height:6px;background:var(--volt);
}
.hero-caption{
  position:absolute;left:20px;bottom:18px;z-index:2;color:#fff;font-size:13px;letter-spacing:.02em;
  display:flex;align-items:center;gap:8px;
}
.hero-caption::before{content:"";width:6px;height:6px;background:var(--volt);}

/* 痛点卡 */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.pain-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;border-top:2px solid transparent;box-shadow:var(--shadow-card);
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.pain-card:hover{border-top-color:var(--volt);box-shadow:var(--shadow-lift);transform:translateY(-3px);}
.pain-num{
  font-family:'Barlow','Inter',system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:13px;font-weight:700;color:var(--steel);letter-spacing:.08em;
}
.pain-card h3{margin-top:14px;font-size:18px;font-weight:600;line-height:1.45;}
.pain-card p{margin-top:10px;font-size:15px;line-height:1.7;color:var(--steel);}

/* 步骤流程 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;position:relative;}
.step{
  position:relative;padding:0 32px 0 0;
}
.step:last-child{padding-right:0;}
.step-num{
  width:40px;height:40px;border:1px solid var(--ink);border-radius:999px;
  display:flex;align-items:center;justify-content:center;
  font-family:'Barlow','Inter',system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:14px;font-weight:700;background:var(--mist);
}
.step-line{
  position:absolute;left:56px;top:20px;right:24px;border-top:1px dashed rgba(21,24,28,.28);
}
.step:last-child .step-line{display:none;}
.step h3{margin-top:24px;font-size:20px;font-weight:600;}
.step p{margin-top:10px;font-size:15px;line-height:1.75;color:var(--steel);max-width:300px;}
.step .text-link{margin-top:18px;}

/* 数据区 */
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.data-cell{padding:0 32px;border-left:1px solid rgba(255,255,255,.12);}
.data-cell:first-child{border-left:0;padding-left:0;}
.data-num{
  font-family:'Barlow','Inter',system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:50px;font-weight:700;line-height:1.05;color:var(--volt);
}
.data-num small{font-size:20px;font-weight:600;margin-left:4px;}
.data-label{margin-top:12px;font-size:13px;color:rgba(255,255,255,.65);line-height:1.6;}

/* 证言 */
.quote-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.quote-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px;box-shadow:var(--shadow-card);position:relative;
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.quote-card:hover{box-shadow:var(--shadow-lift);transform:translateY(-3px);border-color:var(--volt);}
.quote-mark{
  font-family:Georgia,serif;font-size:56px;line-height:1;color:rgba(242,194,0,.55);
  margin-bottom:6px;
}
.quote-text{font-size:19px;line-height:1.75;color:var(--ink-2);}
.quote-person{display:flex;align-items:center;gap:12px;margin-top:24px;padding-top:20px;border-top:1px solid var(--line);}
.quote-avatar{width:40px;height:40px;border-radius:999px;overflow:hidden;flex-shrink:0;background:var(--mist);}
.quote-avatar img{width:100%;height:100%;object-fit:cover;}
.quote-name{font-size:14px;font-weight:600;}
.quote-role{font-size:12px;color:var(--steel);}

/* 资讯卡 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:var(--white);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
  min-height:100%;
}
.news-card:hover{box-shadow:var(--shadow-lift);transform:translateY(-3px);border-color:var(--volt);}
.news-thumb{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--mist);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-badge{
  position:absolute;left:12px;top:12px;background:var(--ink);color:#fff;
  font-size:12px;line-height:1;padding:6px 8px;border-radius:var(--radius-badge);
  max-width:calc(100% - 24px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-title{
  font-size:18px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-desc{
  margin-top:10px;font-size:14px;line-height:1.7;color:var(--steel);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--steel);
}
.news-empty{
  min-height:240px;border:1px dashed var(--line);border-radius:var(--radius-card);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  background:var(--white);text-align:center;padding:32px;
}
.news-empty .dot{width:10px;height:10px;background:var(--volt);border-radius:999px;}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:16px 0;font-size:16.5px;font-weight:600;color:var(--ink);
  transition:color var(--ease);
}
.faq-q:hover{color:var(--ink-2);}
.faq-icon{
  flex-shrink:0;width:24px;height:24px;border-radius:999px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:15px;line-height:1;color:var(--ink);
  transition:transform var(--ease),background var(--ease),border-color var(--ease);
}
.faq-item.is-open .faq-icon{background:var(--volt);border-color:var(--volt);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms ease-out;}
.faq-a p{font-size:15px;line-height:1.8;color:var(--steel);padding:0 0 20px;margin-top:-4px;}

/* CTA 带 */
.cta-band{border-top:2px solid var(--volt);background:var(--ink);color:#fff;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;padding:56px 0;}
.cta-inner h2{font-size:30px;line-height:1.3;font-weight:700;color:#fff;}
.cta-inner p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.68);}

/* 页脚 */
.site-footer{background:var(--ink-3);color:rgba(255,255,255,.72);padding-top:72px;}
.footer-grid{display:grid;grid-template-columns:5fr 2fr 2fr 3fr;gap:32px;padding-bottom:56px;}
.footer-brand .brand{color:#fff;margin-bottom:18px;}
.footer-brand .brand-name span{color:rgba(255,255,255,.72);}
.footer-desc{font-size:14px;line-height:1.8;max-width:300px;color:rgba(255,255,255,.6);}
.status{display:flex;align-items:center;gap:8px;margin-top:18px;font-size:12px;color:rgba(255,255,255,.6);}
.status-dot{width:8px;height:8px;border-radius:999px;background:var(--volt);}
.footer-title{font-size:13px;font-weight:700;color:#fff;letter-spacing:.06em;margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{
  font-size:14px;color:rgba(255,255,255,.72);
  border-bottom:1px solid transparent;transition:color var(--ease),border-color var(--ease);
}
.footer-links a:hover{color:var(--volt);border-bottom-color:var(--volt);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 40px;
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:12px;color:rgba(255,255,255,.5);
}
.footer-bottom .legal{display:flex;flex-wrap:wrap;gap:8px 20px;}

/* 移动抽屉 */
.burger{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:var(--white);align-items:center;justify-content:center;
}
.burger span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}
.drawer{
  position:fixed;inset:0;z-index:80;pointer-events:none;
}
.drawer-panel{
  position:absolute;right:0;top:0;height:100%;width:88%;max-width:380px;background:var(--paper);
  transform:translateX(100%);transition:transform 220ms ease-out;
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
  border-left:1px solid var(--line);
}
.drawer-mask{
  position:absolute;inset:0;background:rgba(21,24,28,.45);opacity:0;transition:opacity 220ms ease-out;
}
.drawer.is-open{pointer-events:auto;}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer.is-open .drawer-mask{opacity:1;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:var(--white);
  font-size:20px;line-height:1;color:var(--ink);display:flex;align-items:center;justify-content:center;
}
.drawer-nav{margin-top:8px;flex:1;}
.drawer-link{
  display:flex;align-items:center;gap:14px;height:56px;font-size:18px;font-weight:600;
  border-bottom:1px solid var(--line);color:var(--ink);
}
.drawer-link .idx{
  font-family:'Barlow','Inter',system-ui,sans-serif;font-size:12px;color:var(--steel);width:20px;
}
.drawer-foot{margin-top:20px;}

@media (max-width:1023px){
  .container{padding-left:32px;padding-right:32px;}
  .nav-wrap{height:64px;padding:0 32px;}
  .nav-links{display:none;}
  .nav-cta .btn-sm.btn-ghost{display:none;}
  .burger{display:inline-flex;}
  .hero{padding-top:56px;padding-bottom:72px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:40px;max-width:none;}
  .section{padding-top:80px;padding-bottom:80px;}
  .h2{font-size:28px;}
  .pain-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;gap:0;}
  .step{padding:0 0 32px 0;border-left:1px solid var(--line);margin-left:20px;padding-left:28px;}
  .step:last-child{padding-bottom:0;border-left-color:transparent;}
  .step-line{display:none;}
  .step-num{position:relative;margin-left:-48px;background:var(--mist);}
  .data-grid{grid-template-columns:repeat(2,1fr);row-gap:36px;}
  .data-cell:nth-child(3){border-left:0;padding-left:0;}
  .quote-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .faq-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:2fr 2fr;row-gap:40px;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;padding:48px 0;}
}
@media (max-width:639px){
  .container{padding-left:20px;padding-right:20px;}
  .nav-wrap{padding:0 20px;}
  .brand{font-size:17px;}
  .hero h1{font-size:31px;line-height:1.22;}
  .hero-sub{font-size:16px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .trust-row{flex-direction:column;gap:16px;}
  .trust-item{border-right:0;margin-right:0;padding-right:0;border-bottom:1px solid var(--line);padding-bottom:14px;}
  .trust-item:last-child{border-bottom:0;padding-bottom:0;}
  .section{padding-top:64px;padding-bottom:64px;}
  .h2{font-size:25px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:28px;}
  .news-grid{grid-template-columns:1fr;}
  .data-num{font-size:38px;}
  .data-cell{padding:0 16px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-inner h2{font-size:24px;}
  .cta-inner .btn{width:100%;}
  .quote-text{font-size:17px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --ink:#15181C; --ink-2:#242A31; --ink-3:#0E1114;
  --steel:#5B6570; --line:#DCD8CF; --paper:#F7F5F0; --mist:#EDEAE3;
  --white:#FFFFFF; --volt:#F2C200; --volt-deep:#C79B00; --alert:#A8452C;
  --radius-card:14px; --radius-btn:10px; --radius-input:8px; --radius-badge:6px; --radius-img:12px;
  --shadow-sm:0 1px 2px rgba(21,24,28,.06);
  --shadow-md:0 18px 40px -24px rgba(21,24,28,.25);
  --ease:180ms ease-out;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body.site-body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",Barlow,Inter,system-ui,sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
ul,ol{padding-left:0;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px;}
@media (min-width:1024px){.container{padding-left:48px;padding-right:48px;}}
@media (min-width:640px) and (max-width:1023px){.container{padding-left:32px;padding-right:32px;}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--paper);border-bottom:1px solid var(--line);transition:box-shadow var(--ease);}
.site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(21,24,28,.45);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{width:28px;height:28px;background:var(--volt);flex:0 0 28px;clip-path:polygon(0 0,100% 0,100% 62%,68% 100%,0 100%);}
.brand-name{font-size:18px;line-height:1;letter-spacing:.01em;white-space:nowrap;}
.brand-name strong{font-weight:800;color:var(--ink);}
.brand-name span{font-weight:500;color:var(--ink);}
.nav-links{display:flex;align-items:center;gap:30px;}
.nav-link{position:relative;font-size:15px;font-weight:600;color:var(--ink);padding:8px 0;transition:color var(--ease);}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--volt);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{font-weight:700;}
.nav-link.is-active::before{content:"";position:absolute;left:-13px;top:50%;transform:translateY(-50%);width:6px;height:6px;background:var(--volt);}
.header-actions{display:flex;align-items:center;gap:12px;}
.mobile-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;background:transparent;border:1px solid var(--line);border-radius:var(--radius-btn);cursor:pointer;color:var(--ink);}
.mobile-toggle:focus-visible{outline:2px solid var(--ink);outline-offset:3px;}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform var(--ease),background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);}
.btn-primary{background:var(--volt);color:var(--ink);}
.btn-primary:hover{background:var(--volt-deep);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-primary:focus-visible{outline:2px solid var(--ink);outline-offset:3px;}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-ghost:focus-visible{outline:2px solid var(--volt-deep);outline-offset:3px;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--ink);border-bottom:2px solid transparent;transition:border-color var(--ease),color var(--ease);}
.btn-text:hover{border-bottom-color:var(--volt);}
.btn-text:hover .arrow{transform:translateX(2px);}
.btn-text .arrow{transition:transform var(--ease);}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:90;display:none;}
.drawer.is-open{display:block;}
.drawer-backdrop{position:absolute;inset:0;background:rgba(14,17,20,.55);}
.drawer-panel{position:absolute;top:0;right:0;width:88%;max-width:380px;height:100%;background:var(--paper);display:flex;flex-direction:column;padding:16px 20px 24px;transform:translateX(100%);transition:transform 220ms ease-out;overflow-y:auto;}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:64px;border-bottom:1px solid var(--line);margin-bottom:8px;}
.drawer-close{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;background:transparent;border:1px solid var(--line);border-radius:var(--radius-btn);cursor:pointer;}
.drawer-close:focus-visible{outline:2px solid var(--ink);outline-offset:3px;}
.drawer-link{display:flex;align-items:center;gap:14px;height:56px;font-size:18px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line);}
.drawer-link .num{font-size:12px;color:var(--steel);font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:.08em;}
.drawer-link.is-active{color:var(--ink);}
.drawer-link.is-active .num{color:var(--volt-deep);}
.drawer-foot{margin-top:auto;padding-top:24px;}
.drawer-foot .btn{width:100%;}

/* ---------- breadcrumb ---------- */
.breadcrumb{background:var(--paper);border-bottom:1px solid var(--line);}
.crumb-inner{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 0;font-size:12px;color:var(--steel);}
.crumb-inner a{transition:color var(--ease);}
.crumb-inner a:hover{color:var(--ink);}
.crumb-sep{color:#b9b3a7;}
.crumb-current{color:var(--ink);font-weight:600;}

/* ---------- article head ---------- */
.article-head{background:var(--white);border-bottom:1px solid var(--line);padding:44px 0 36px;}
.article-head-inner{max-width:860px;}
.badge-cat{display:inline-flex;align-items:center;height:24px;padding:0 8px;border-radius:var(--radius-badge);background:var(--ink);color:#fff;font-size:12px;font-weight:600;letter-spacing:.02em;}
.article-title{font-size:40px;line-height:1.25;font-weight:800;letter-spacing:-.01em;margin:18px 0 24px;color:var(--ink);}
.meta-line{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--steel);font-variant-numeric:tabular-nums;}
.meta-dot{color:#c3bdb1;}

/* ---------- article layout ---------- */
.article-main{background:var(--white);padding:44px 0 72px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 264px;gap:64px;max-width:1124px;margin:0 auto;}
.article-col{max-width:740px;width:100%;}

/* ---------- prose ---------- */
.prose{font-size:17px;line-height:1.9;color:#2b3138;}
.prose > *:first-child{margin-top:0;}
.prose p{margin:0 0 1.2em;}
.prose h2{font-size:26px;line-height:1.42;font-weight:700;color:var(--ink);margin:48px 0 18px;padding-left:16px;border-left:4px solid var(--volt);scroll-margin-top:104px;}
.prose h3{font-size:20px;line-height:1.5;font-weight:600;color:var(--ink);margin:32px 0 14px;scroll-margin-top:104px;}
.prose h4{font-size:17px;font-weight:700;color:var(--ink);margin:24px 0 10px;}
.prose ul,.prose ol{margin:0 0 1.2em 1.4em;padding-left:0;}
.prose ul{list-style:disc;}
.prose ol{list-style:decimal;}
.prose li{margin-bottom:.4em;}
.prose li::marker{color:var(--volt-deep);}
.prose blockquote{margin:28px 0;background:var(--mist);border-left:3px solid var(--volt);border-radius:0 var(--radius-img) var(--radius-img) 0;padding:20px 24px;font-size:16px;line-height:1.85;color:var(--ink-2);}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{border-radius:var(--radius-img);margin:28px auto;}
.prose figure{margin:28px 0;}
.prose figcaption{font-size:12px;color:var(--steel);text-align:center;margin-top:12px;}
.prose a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--volt);text-underline-offset:3px;transition:text-decoration-color var(--ease);}
.prose a:hover{text-decoration-color:var(--volt-deep);}
.prose table{width:100%;border-collapse:collapse;margin:28px 0;font-size:15px;}
.prose th{background:var(--mist);color:var(--ink);font-weight:700;text-align:left;}
.prose th,.prose td{border:1px solid var(--line);padding:10px 14px;line-height:1.7;vertical-align:top;}
.prose code{background:var(--mist);border-radius:4px;padding:2px 6px;font-size:14px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;}
.prose pre{background:var(--ink);color:#f2efe8;border-radius:var(--radius-img);padding:18px 20px;overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0;}
.prose pre code{background:transparent;color:inherit;padding:0;}
.prose hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

/* ---------- toc ---------- */
.toc-block{position:sticky;top:96px;align-self:start;}
.toc-title{font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--steel);margin:0 0 14px;}
.toc-list{display:flex;flex-direction:column;}
.toc-link{display:block;font-size:14px;line-height:1.55;color:var(--ink-2);padding:8px 0 8px 12px;border-left:3px solid transparent;transition:color var(--ease),border-color var(--ease);}
.toc-link:hover{color:var(--ink);border-left-color:var(--line);}
.toc-link.is-active{color:var(--ink);font-weight:600;border-left-color:var(--volt);}
.aside-card{margin-top:28px;background:var(--white);border:1px solid var(--line);border-top:3px solid var(--volt);border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-sm);}
.aside-card h3{font-size:15px;font-weight:700;margin:0 0 8px;color:var(--ink);}
.aside-card p{font-size:13px;line-height:1.8;color:var(--steel);margin:0 0 12px;}
.toc-mobile{display:none;border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--paper);margin-bottom:28px;}
.toc-mobile-btn{width:100%;height:48px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;background:transparent;border:0;font-size:14px;font-weight:600;color:var(--ink);cursor:pointer;}
.toc-mobile-btn:focus-visible{outline:2px solid var(--ink);outline-offset:2px;}
.toc-mobile-panel{display:none;padding:0 16px 12px;border-top:1px solid var(--line);}
.toc-mobile-panel.is-open{display:block;}

/* ---------- tags / post nav ---------- */
.tags{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:44px;padding-top:28px;border-top:1px solid var(--line);}
.tags-label{font-size:12px;color:var(--steel);margin-right:4px;}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--radius-badge);background:var(--mist);color:var(--ink-2);font-size:12px;transition:background var(--ease),color var(--ease);}
.tag:hover{background:var(--ink);color:#fff;}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px;}
.post-nav-card{border:1px solid var(--line);border-radius:var(--radius-card);background:var(--white);padding:18px 20px;transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);}
.post-nav-card:hover{border-color:var(--volt);box-shadow:var(--shadow-md);transform:translateY(-2px);}
.post-nav-card .pn-label{display:block;font-size:12px;color:var(--steel);margin-bottom:6px;}
.post-nav-card .pn-title{display:block;font-size:15px;font-weight:600;color:var(--ink);line-height:1.6;}

/* ---------- empty state ---------- */
.empty-state{border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--paper);padding:56px 24px;text-align:center;min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;}
.empty-icon{width:44px;height:44px;border-radius:50%;background:var(--mist);display:flex;align-items:center;justify-content:center;color:var(--steel);font-weight:700;}
.empty-title{font-size:20px;font-weight:700;margin:6px 0 0;color:var(--ink);}
.empty-text{font-size:14px;color:var(--steel);max-width:420px;margin:0 0 12px;line-height:1.8;}

/* ---------- related ---------- */
.related{background:var(--mist);padding:72px 0 80px;border-top:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap;}
.section-title{font-size:30px;line-height:1.3;font-weight:700;margin:0;color:var(--ink);}
.section-sub{font-size:14px;color:var(--steel);margin:8px 0 0;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--volt);}
.card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--mist);}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease);}
.card:hover .thumb img{transform:scale(1.03);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-badge{align-self:flex-start;display:inline-flex;align-items:center;height:24px;padding:0 8px;border-radius:var(--radius-badge);background:var(--ink);color:#fff;font-size:12px;font-weight:600;}
.card h3{font-size:18px;line-height:1.5;font-weight:700;margin:0;color:var(--ink);}
.card p{font-size:14px;line-height:1.75;color:var(--steel);margin:0;}
.card-meta{margin-top:auto;padding-top:8px;font-size:12px;color:var(--steel);display:flex;align-items:center;justify-content:space-between;gap:8px;}
.card-meta .arrow{color:var(--ink);transition:transform var(--ease);}
.card:hover .card-meta .arrow{transform:translateX(3px);}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink);border-top:2px solid var(--volt);padding:56px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-band h2{color:#fff;font-size:28px;line-height:1.35;font-weight:700;margin:0;}
.cta-band p{color:rgba(255,255,255,.7);font-size:15px;margin:10px 0 0;max-width:560px;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-3);color:#fff;padding:72px 0 40px;}
.footer-grid{display:grid;grid-template-columns:5fr 2fr 2fr 3fr;gap:32px;}
.site-footer .brand-name strong,.site-footer .brand-name span{color:#fff;}
.footer-desc{color:rgba(255,255,255,.6);font-size:13px;line-height:1.9;margin:16px 0 0;max-width:300px;}
.status{display:flex;align-items:center;gap:8px;margin-top:18px;font-size:12px;color:rgba(255,255,255,.55);}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--volt);flex:0 0 8px;}
.footer-title{font-size:13px;font-weight:700;letter-spacing:.06em;color:#fff;margin:0 0 16px;}
.footer-links{list-style:none;margin:0;padding:0;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color var(--ease);}
.footer-links a:hover{color:var(--volt);text-decoration:underline;}
.footer-bottom{margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap;font-size:12px;color:rgba(255,255,255,.45);line-height:1.8;}
.footer-bottom .legal{max-width:520px;}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-links{display:none;}
  .mobile-toggle{display:inline-flex;}
  .header-inner{height:64px;}
  .brand-name{font-size:16px;}
  .article-head{padding:32px 0 28px;}
  .article-title{font-size:32px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .article-col{max-width:100%;}
  .toc-block{display:none;}
  .toc-mobile{display:block;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px 24px;}
  .section-title{font-size:26px;}
}
@media (max-width:640px){
  .container{padding-left:20px;padding-right:20px;}
  .article-title{font-size:27px;line-height:1.3;}
  .prose{font-size:17px;}
  .prose h2{font-size:22px;margin-top:40px;}
  .prose h3{font-size:18px;}
  .prose table{display:block;overflow-x:auto;white-space:nowrap;}
  .related{padding:56px 0 64px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .post-nav{grid-template-columns:minmax(0,1fr);}
  .cta-band{padding:44px 0;}
  .cta-band h2{font-size:22px;}
  .cta-inner{flex-direction:column;align-items:stretch;}
  .cta-inner .btn{width:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .site-footer{padding:56px 0 32px;}
  .btn{height:48px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
    --ink:#15181C;
    --ink-2:#242A31;
    --ink-3:#0E1114;
    --steel:#5B6570;
    --line:#DCD8CF;
    --paper:#F7F5F0;
    --mist:#EDEAE3;
    --white:#FFFFFF;
    --volt:#F2C200;
    --volt-deep:#C79B00;
    --alert:#A8452C;
    --r-card:14px;
    --r-btn:10px;
    --r-input:8px;
    --r-badge:6px;
    --sh-card:0 1px 2px rgba(21,24,28,.06);
    --sh-hover:0 18px 40px -24px rgba(21,24,28,.25);
    --ease:180ms ease-out;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC","Barlow","Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
    font-size:16.5px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font-family:inherit;font-size:inherit;color:inherit}
  input,textarea,select{font-family:inherit}
  :focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:4px}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

  /* 容器 */
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 48px}
  .section{padding:112px 0}
  .section--tight{padding:80px 0}
  .section--white{background:var(--white)}
  .section--mist{background:var(--mist)}
  .section--paper{background:var(--paper)}
  .section--ink{background:var(--ink);color:#fff}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.12em;font-weight:600;color:var(--steel);
  }
  .eyebrow::before{content:"";width:6px;height:6px;background:var(--volt);display:inline-block;border-radius:1px}
  .section-head{margin-bottom:40px;max-width:720px}
  .section-head h2{font-size:34px;line-height:1.28;font-weight:700;letter-spacing:-.01em}
  .section-head p{margin-top:12px;font-size:15.5px;color:var(--steel);line-height:1.8}

  /* 品牌与导航 */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:var(--paper);
    border-bottom:1px solid var(--line);
    transition:box-shadow var(--ease);
  }
  .site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(21,24,28,.45)}
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px}
  .brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
  .brand-mark{
    position:relative;width:28px;height:28px;background:var(--volt);
    border-radius:7px;display:inline-block;flex:0 0 auto;overflow:hidden;
  }
  .brand-mark::after{
    content:"";position:absolute;top:-3px;left:16px;width:5px;height:36px;
    background:var(--paper);transform:rotate(20deg);
  }
  .site-footer .brand-mark::after{background:var(--ink-3)}
  .brand-name{display:inline-flex;align-items:baseline;gap:1px;font-size:18px;letter-spacing:-.01em;white-space:nowrap}
  .brand-name strong{font-weight:800}
  .brand-name span{font-weight:400}

  .nav-links{display:flex;align-items:center;gap:28px}
  .nav-link{
    position:relative;font-size:15px;font-weight:600;color:var(--ink);
    padding:6px 0;transition:color var(--ease);white-space:nowrap;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
    background:var(--volt);transform:scaleX(0);transform-origin:left;
    transition:transform var(--ease);
  }
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.is-active{padding-left:13px;font-weight:800}
  .nav-link.is-active::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:6px;height:6px;background:var(--volt);border-radius:1px;
  }
  .header-cta{display:flex;align-items:center;gap:12px}

  .nav-toggle{
    display:none;width:44px;height:44px;align-items:center;justify-content:center;
    background:transparent;border:1px solid var(--line);border-radius:var(--r-btn);
    cursor:pointer;transition:border-color var(--ease),background-color var(--ease);
  }
  .nav-toggle:hover{border-color:var(--ink);background:var(--mist)}

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
    cursor:pointer;transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
    white-space:nowrap;
  }
  .btn-primary{background:var(--volt);color:var(--ink)}
  .btn-primary:hover{background:var(--volt-deep);transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(0)}
  .btn-primary:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
  .btn-secondary{background:transparent;border-color:var(--ink);color:var(--ink)}
  .btn-secondary:hover{background:var(--ink);color:#fff}
  .btn-secondary:focus-visible{outline:2px solid var(--volt-deep);outline-offset:3px}
  .btn-sm{height:40px;padding:0 18px;font-size:14px}
  .btn-block{width:100%}
  .btn-text{
    display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
    color:var(--ink);padding:2px 0;border-bottom:2px solid transparent;
    transition:border-color var(--ease);
  }
  .btn-text .arrow{transition:transform var(--ease)}
  .btn-text:hover{border-bottom-color:var(--volt)}
  .btn-text:hover .arrow{transform:translateX(2px)}

  /* 徽章 */
  .badge{
    display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 8px;
    border-radius:var(--r-badge);font-size:12px;font-weight:600;line-height:1;
    background:var(--mist);color:var(--ink);white-space:nowrap;
  }
  .badge--volt{background:var(--volt);color:var(--ink)}
  .badge--ink{background:var(--ink);color:#fff}
  .badge--outline{background:transparent;border:1px solid var(--line);color:var(--steel)}

  /* Hero */
  .hero{
    background:var(--paper);
    border-bottom:1px solid var(--line);
    padding:56px 0 60px;
  }
  .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
  .hero h1{
    margin-top:16px;
    font-size:40px;line-height:1.2;font-weight:800;letter-spacing:-.02em;
    max-width:16em;
  }
  .hero h1 em{font-style:normal;position:relative;white-space:nowrap}
  .hero h1 em::after{
    content:"";position:absolute;left:0;right:0;bottom:3px;height:8px;
    background:var(--volt);opacity:.55;z-index:-1;
  }
  .hero-sub{margin-top:16px;font-size:16.5px;line-height:1.8;color:var(--steel);max-width:540px}
  .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  .hero-media{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--ink)}
  .hero-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;opacity:.92}
  .hero-media::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(21,24,28,.18),rgba(21,24,28,.42));
  }
  .hero-media .corner{
    position:absolute;top:14px;left:14px;z-index:2;
    width:26px;height:26px;border-top:2px solid var(--volt);border-left:2px solid var(--volt);
  }
  .hero-media .media-tag{
    position:absolute;left:14px;bottom:14px;z-index:2;
    background:rgba(21,24,28,.82);color:#fff;font-size:12px;font-weight:600;
    padding:6px 10px;border-radius:6px;letter-spacing:.02em;
  }

  /* 两栏步骤布局 */
  .steps-layout{display:grid;grid-template-columns:264px minmax(0,1fr);gap:56px;align-items:start}
  .toc-wrap{position:sticky;top:96px}
  .toc-title{font-size:13px;font-weight:600;color:var(--steel);letter-spacing:.06em;margin-bottom:14px}
  .toc{display:flex;flex-direction:column;border-left:1px solid var(--line)}
  .toc-link{
    display:block;padding:12px 12px 12px 16px;font-size:14px;color:var(--steel);
    border-left:3px solid transparent;margin-left:-2px;line-height:1.5;
    transition:color var(--ease),border-color var(--ease),background-color var(--ease);
  }
  .toc-link:hover{color:var(--ink);background:var(--mist)}
  .toc-link.is-active{color:var(--ink);font-weight:700;border-left-color:var(--volt)}
  .toc-num{font-variant-numeric:tabular-nums;color:var(--steel);margin-right:8px;font-size:12px}
  .toc-link.is-active .toc-num{color:var(--volt-deep)}
  .toc-note{
    margin-top:24px;padding:16px;border:1px solid var(--line);border-radius:var(--r-card);
    background:var(--white);font-size:13px;line-height:1.7;color:var(--steel);
  }

  /* 时间线 */
  .timeline{position:relative}
  .timeline::before{
    content:"";position:absolute;left:19px;top:18px;bottom:24px;width:1px;background:var(--line);
  }
  .step{position:relative;padding-left:64px;padding-bottom:28px}
  .step:last-child{padding-bottom:0}
  .step-node{
    position:absolute;left:0;top:20px;width:40px;height:40px;border-radius:50%;
    border:1px solid var(--ink);background:var(--white);
    display:grid;place-items:center;font-size:13px;font-weight:700;
    font-variant-numeric:tabular-nums;z-index:2;
  }
  .step-card{
    background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
    padding:26px 26px 24px;box-shadow:var(--sh-card);
    transition:box-shadow var(--ease),border-color var(--ease);
  }
  .step-card:hover{box-shadow:var(--sh-hover);border-color:var(--volt)}
  .step-card h3{font-size:20px;line-height:1.45;font-weight:600}
  .step-card p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--steel)}
  .step-card p + p{margin-top:10px}
  .step-figure{
    margin-top:18px;border-radius:12px;overflow:hidden;border:1px solid var(--line);
  }
  .step-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform var(--ease)}
  .step-card:hover .step-figure img{transform:scale(1.03)}
  .step-figure figcaption{font-size:12px;color:var(--steel);padding:10px 12px;background:var(--mist);line-height:1.6}

  .note{
    margin-top:16px;padding:14px 16px;background:var(--mist);border-left:4px solid var(--volt);
    border-radius:0 8px 8px 0;font-size:14px;line-height:1.75;color:var(--ink-2);
  }
  .note strong{font-weight:700}
  .note--risk{border-left-color:var(--alert)}
  .note--risk strong{color:var(--alert)}

  /* 卡点行 */
  .row-list{border-top:1px solid var(--line)}
  .check-row{
    display:grid;grid-template-columns:56px minmax(0,1fr) auto;gap:20px;align-items:center;
    padding:24px 8px;border-bottom:1px solid var(--line);
    transition:background-color var(--ease);
  }
  .check-row:hover{background:rgba(255,255,255,.7)}
  .check-row .idx{font-size:15px;font-weight:700;color:var(--steel);font-variant-numeric:tabular-nums}
  .check-row h3{font-size:17px;font-weight:600;line-height:1.5}
  .check-row p{margin-top:6px;font-size:14px;color:var(--steel);line-height:1.75}

  /* 图文区 */
  .split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
  .split-media{
    border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--mist);
  }
  .split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform var(--ease)}
  .split-media:hover img{transform:scale(1.03)}
  .split h2{font-size:32px;line-height:1.3;font-weight:700}
  .split p.lead{margin-top:14px;font-size:16px;color:var(--steel);line-height:1.85}
  .points{margin-top:24px;display:grid;gap:16px}
  .point{display:grid;grid-template-columns:40px minmax(0,1fr);gap:14px;align-items:start}
  .point .mark{
    width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--white);
    display:grid;place-items:center;font-size:12px;font-weight:700;color:var(--ink);
    font-variant-numeric:tabular-nums;
  }
  .point h3{font-size:16px;font-weight:600}
  .point p{margin-top:4px;font-size:14px;color:var(--steel);line-height:1.75}

  /* FAQ */
  .faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
  .faq-list{border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:56px;padding:16px 4px;background:transparent;border:0;cursor:pointer;
    text-align:left;font-size:16.5px;font-weight:600;line-height:1.6;
    transition:color var(--ease);
  }
  .faq-q:hover{color:var(--volt-deep)}
  .faq-icon{
    flex:0 0 auto;width:22px;height:22px;border:1px solid var(--line);border-radius:5px;
    display:grid;place-items:center;font-size:15px;font-weight:700;color:var(--ink);
    transition:transform var(--ease),background-color var(--ease),border-color var(--ease);
    line-height:1;
  }
  .faq-item.open .faq-icon{background:var(--volt);border-color:var(--volt);transform:rotate(180deg)}
  .faq-a{display:none;padding:0 4px 20px;font-size:15px;line-height:1.85;color:var(--steel)}
  .faq-item.open .faq-a{display:block}

  /* CTA 带 */
  .cta-band{
    background:var(--ink);color:#fff;border-top:2px solid var(--volt);
    padding:64px 0;
  }
  .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px}
  .cta-inner h2{font-size:30px;line-height:1.35;font-weight:700}
  .cta-inner p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.68);line-height:1.8;max-width:560px}

  /* 页脚 */
  .site-footer{background:var(--ink-3);color:#fff;padding:72px 0 40px}
  .footer-grid{display:grid;grid-template-columns:5fr 2fr 2fr 3fr;gap:32px}
  .footer-brand .brand-name{font-size:18px;color:#fff}
  .footer-desc{
    margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px;
  }
  .status{display:flex;align-items:center;gap:8px;margin-top:20px;font-size:12px;color:rgba(255,255,255,.55)}
  .status-dot{width:8px;height:8px;border-radius:50%;background:var(--volt);flex:0 0 auto}
  .footer-title{font-size:13px;font-weight:600;letter-spacing:.08em;color:rgba(255,255,255,.5);margin-bottom:16px}
  .footer-links{display:grid;gap:10px}
  .footer-links a{
    font-size:14px;color:rgba(255,255,255,.72);transition:color var(--ease);
    border-bottom:1px solid transparent;padding-bottom:1px;
  }
  .footer-links a:hover{color:var(--volt);border-bottom-color:var(--volt)}
  .footer-bottom{
    margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
    font-size:12px;color:rgba(255,255,255,.5);line-height:1.7;
  }
  .legal{max-width:640px}

  /* 抽屉 */
  .drawer{position:fixed;inset:0;z-index:90;pointer-events:none}
  .drawer-backdrop{
    position:absolute;inset:0;background:rgba(21,24,28,.52);opacity:0;
    transition:opacity 240ms ease-out;
  }
  .drawer-panel{
    position:absolute;top:0;right:0;height:100%;width:88%;max-width:380px;
    background:var(--paper);display:flex;flex-direction:column;
    transform:translateX(100%);transition:transform 240ms ease-out;
    padding:16px 20px 24px;overflow-y:auto;
  }
  .drawer.is-open{pointer-events:auto}
  .drawer.is-open .drawer-backdrop{opacity:1}
  .drawer.is-open .drawer-panel{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px;margin-bottom:8px}
  .drawer-close{
    width:44px;height:44px;display:grid;place-items:center;background:transparent;
    border:1px solid var(--line);border-radius:var(--r-btn);cursor:pointer;font-size:22px;line-height:1;
  }
  .drawer-close:hover{border-color:var(--ink)}
  .drawer-link{
    display:flex;align-items:center;gap:12px;height:56px;font-size:18px;font-weight:600;
    border-bottom:1px solid var(--line);transition:color var(--ease);
  }
  .drawer-link:hover{color:var(--volt-deep)}
  .drawer-num{font-size:12px;font-weight:700;color:var(--steel);font-variant-numeric:tabular-nums;width:20px}
  .drawer-link.is-active{font-weight:800}
  .drawer-link.is-active .drawer-num{color:var(--volt-deep)}
  .drawer-foot{margin-top:auto;padding-top:24px}

  body.no-scroll{overflow:hidden}

  /* 响应式 */
  @media (max-width:1279px){
    .container{max-width:1100px}
  }
  @media (max-width:1023px){
    .container{padding:0 32px}
    .section{padding:80px 0}
    .section--tight{padding:64px 0}
    .nav-links,.header-cta{display:none}
    .nav-toggle{display:inline-flex}
    .header-inner{height:64px}
    .hero{padding:40px 0 48px}
    .hero-grid{grid-template-columns:1fr;gap:32px}
    .hero h1{font-size:34px;max-width:none}
    .hero-media{order:2}
    .hero-media img{aspect-ratio:16/9}
    .steps-layout{grid-template-columns:1fr;gap:32px}
    .toc-wrap{position:static}
    .toc-title{margin-bottom:10px}
    .toc{flex-direction:row;overflow-x:auto;border-left:0;border-bottom:1px solid var(--line);gap:8px;padding-bottom:8px}
    .toc-link{
      white-space:nowrap;background:var(--mist);border-radius:6px;border-left:0;
      border-bottom:3px solid transparent;padding:8px 12px;margin-left:0;font-size:13px;
    }
    .toc-link.is-active{border-left:0;border-bottom-color:var(--volt);background:var(--white)}
    .toc-note{display:none}
    .split{grid-template-columns:1fr;gap:32px}
    .faq-layout{grid-template-columns:1fr;gap:32px}
    .cta-inner{flex-direction:column;align-items:flex-start;gap:24px}
    .cta-inner .btn{width:100%}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .footer-brand{grid-column:1 / -1}
  }
  @media (max-width:639px){
    .container{padding:0 20px}
    .section{padding:64px 0}
    .hero h1{font-size:30px}
    .hero-sub{font-size:15.5px}
    .hero-actions .btn{width:100%}
    .section-head h2{font-size:25px}
    .split h2{font-size:24px}
    .step{padding-left:52px;padding-bottom:22px}
    .timeline::before{left:15px}
    .step-node{width:32px;height:32px;font-size:12px;top:18px}
    .step-card{padding:20px 18px}
    .step-card h3{font-size:18px}
    .check-row{grid-template-columns:1fr;gap:10px;padding:20px 4px}
    .check-row .idx{font-size:13px}
    .cta-inner h2{font-size:24px}
    .footer-grid{grid-template-columns:1fr}
    .faq-q{font-size:15.5px}
    .btn{height:48px}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important}
  }

/* roulang page: category2 */
:root{
    --ink:#15181C;
    --ink-2:#242A31;
    --ink-3:#0E1114;
    --steel:#5B6570;
    --line:#DCD8CF;
    --paper:#F7F5F0;
    --mist:#EDEAE3;
    --white:#FFFFFF;
    --volt:#F2C200;
    --volt-deep:#C79B00;
    --alert:#A8452C;
    --r-card:14px;
    --r-btn:10px;
    --r-input:8px;
    --r-badge:6px;
    --shadow-card:0 1px 2px rgba(21,24,28,.06);
    --shadow-hover:0 18px 40px -24px rgba(21,24,28,.25);
    --ease:cubic-bezier(.25,.7,.3,1);
    --pad-sec:112px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC","Inter","Barlow",sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
    font-feature-settings:"tnum" 0;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding:0 48px;
  }

  /* ---------- 通用文字与按钮 ---------- */
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:12px;
    letter-spacing:.14em;
    font-weight:700;
    color:var(--steel);
    text-transform:none;
  }
  .eyebrow::before{
    content:"";
    width:6px;height:6px;
    background:var(--volt);
    display:block;
  }

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:48px;
    padding:0 24px;
    border-radius:var(--r-btn);
    font-size:15px;
    font-weight:600;
    line-height:1;
    border:1px solid transparent;
    cursor:pointer;
    transition:background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease), transform .18s var(--ease), box-shadow .18s var(--ease);
    white-space:nowrap;
  }
  .btn-primary{
    background:var(--volt);
    color:var(--ink);
    border-color:var(--volt);
  }
  .btn-primary:hover{background:var(--volt-deep);border-color:var(--volt-deep);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-primary:focus-visible{outline:2px solid var(--ink);outline-offset:3px;}
  .btn-ghost{
    background:transparent;
    color:var(--ink);
    border-color:var(--ink);
  }
  .btn-ghost:hover{background:var(--ink);color:var(--white);}
  .btn-ghost:focus-visible{outline:2px solid var(--volt-deep);outline-offset:3px;}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;}
  .btn-block{width:100%;}

  .link-text{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:15px;
    font-weight:600;
    color:var(--ink);
    border-bottom:2px solid transparent;
    padding-bottom:2px;
    transition:border-color .18s var(--ease), color .18s var(--ease);
  }
  .link-text:hover{border-bottom-color:var(--volt);}
  .link-text:hover .arrow{transform:translateX(2px);}
  .link-text .arrow{transition:transform .18s var(--ease);}
  .link-text:focus-visible{outline:2px solid var(--ink);outline-offset:3px;}

  .badge{
    display:inline-flex;
    align-items:center;
    height:24px;
    padding:0 8px;
    border-radius:var(--r-badge);
    font-size:12px;
    font-weight:600;
    line-height:1;
    white-space:nowrap;
  }
  .badge-mist{background:var(--mist);color:var(--ink);}
  .badge-ink{background:var(--ink);color:var(--white);}
  .badge-volt{background:var(--volt);color:var(--ink);}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:var(--paper);
    border-bottom:1px solid var(--line);
    transition:box-shadow .18s var(--ease), background-color .18s var(--ease);
  }
  .site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(21,24,28,.55);}
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    height:76px;
  }
  .brand{
    display:inline-flex;
    align-items:center;
    gap:12px;
    flex-shrink:0;
  }
  .brand-mark{
    width:28px;height:28px;
    background:var(--volt);
    flex-shrink:0;
    clip-path:polygon(0 0,100% 0,100% 62%,62% 100%,0 100%);
  }
  .brand-name{
    font-size:19px;
    letter-spacing:-.01em;
    color:var(--ink);
    line-height:1.2;
  }
  .brand-name strong{font-weight:800;}
  .brand-name span{font-weight:400;color:var(--ink-2);}

  .nav-links{
    display:flex;
    align-items:center;
    gap:4px;
  }
  .nav-link{
    position:relative;
    display:inline-flex;
    align-items:center;
    height:40px;
    padding:0 14px;
    font-size:15px;
    font-weight:600;
    color:var(--ink);
    border-radius:8px;
    transition:color .18s var(--ease), background-color .18s var(--ease);
    white-space:nowrap;
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:14px;right:14px;bottom:2px;
    height:2px;
    background:var(--volt);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .18s var(--ease);
  }
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link:focus-visible{outline:2px solid var(--ink);outline-offset:2px;}
  .nav-link.is-active{font-weight:700;padding-left:24px;}
  .nav-link.is-active::before{
    content:"";
    position:absolute;
    left:10px;
    top:50%;
    transform:translateY(-50%);
    width:6px;height:6px;
    background:var(--volt);
  }

  .header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
  .nav-toggle{
    display:none;
    width:44px;height:44px;
    align-items:center;
    justify-content:center;
    background:transparent;
    border:1px solid var(--line);
    border-radius:8px;
    cursor:pointer;
    color:var(--ink);
  }
  .nav-toggle:hover{background:var(--mist);}
  .nav-toggle:focus-visible{outline:2px solid var(--ink);outline-offset:2px;}
  .nav-toggle span{
    display:block;
    width:18px;height:2px;
    background:var(--ink);
    position:relative;
  }
  .nav-toggle span::before,
  .nav-toggle span::after{
    content:"";
    position:absolute;
    left:0;
    width:18px;height:2px;
    background:var(--ink);
  }
  .nav-toggle span::before{top:-6px;}
  .nav-toggle span::after{top:6px;}

  /* ---------- 移动端抽屉 ---------- */
  .drawer{
    position:fixed;
    inset:0;
    z-index:120;
    visibility:hidden;
    pointer-events:none;
  }
  .drawer.is-open{visibility:visible;pointer-events:auto;}
  .drawer-backdrop{
    position:absolute;
    inset:0;
    background:rgba(14,17,20,.5);
    opacity:0;
    transition:opacity .2s var(--ease);
  }
  .drawer.is-open .drawer-backdrop{opacity:1;}
  .drawer-panel{
    position:absolute;
    top:0;right:0;bottom:0;
    width:88%;
    max-width:380px;
    background:var(--paper);
    display:flex;
    flex-direction:column;
    transform:translateX(100%);
    transition:transform .24s var(--ease);
    box-shadow:-18px 0 48px -28px rgba(0,0,0,.5);
  }
  .drawer.is-open .drawer-panel{transform:translateX(0);}
  .drawer-head{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:0 20px;
    height:64px;
    border-bottom:1px solid var(--line);
  }
  .drawer-close{
    width:44px;height:44px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    background:transparent;
    border:1px solid var(--line);
    border-radius:8px;
    font-size:20px;
    line-height:1;
    color:var(--ink);
    cursor:pointer;
  }
  .drawer-close:hover{background:var(--mist);}
  .drawer-close:focus-visible{outline:2px solid var(--ink);outline-offset:2px;}
  .drawer-nav{flex:1;overflow-y:auto;}
  .drawer-nav a{
    display:flex;
    align-items:center;
    gap:14px;
    height:56px;
    padding:0 20px;
    font-size:18px;
    font-weight:600;
    color:var(--ink);
    border-bottom:1px solid var(--line);
  }
  .drawer-nav a .idx{
    font-size:12px;
    font-weight:700;
    color:var(--steel);
    letter-spacing:.08em;
    font-variant-numeric:tabular-nums;
  }
  .drawer-nav a.is-active{background:var(--mist);}
  .drawer-nav a:focus-visible{outline:2px solid var(--ink);outline-offset:-4px;}
  .drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line);}

  /* ---------- Hero ---------- */
  .hero{
    background:var(--paper);
    padding:72px 0 88px;
    border-bottom:1px solid var(--line);
  }
  .hero-grid{
    display:grid;
    grid-template-columns:7fr 5fr;
    gap:56px;
    align-items:center;
  }
  h1{
    font-size:clamp(30px,3.7vw,46px);
    line-height:1.18;
    font-weight:800;
    letter-spacing:-.02em;
    margin-top:18px;
  }
  .h1-sub{
    display:block;
    margin-top:14px;
    font-size:clamp(17px,1.5vw,20px);
    line-height:1.55;
    font-weight:600;
    letter-spacing:0;
    color:var(--steel);
  }
  .hero-lead{
    margin-top:20px;
    max-width:520px;
    font-size:17px;
    line-height:1.8;
    color:var(--steel);
  }
  .hero-actions{
    display:flex;
    flex-wrap:wrap;
    gap:14px;
    margin-top:32px;
  }
  .hero-figure{
    position:relative;
    border-radius:var(--r-card);
    overflow:hidden;
    border:1px solid var(--line);
    background:var(--ink-2);
    aspect-ratio:4 / 3;
    box-shadow:var(--shadow-card);
  }
  .hero-figure img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .35s var(--ease);
  }
  .hero-figure:hover img{transform:scale(1.03);}
  .hero-figure::after{
    content:"";
    position:absolute;
    inset:0;
    background:rgba(14,17,20,.4);
    pointer-events:none;
  }
  .hero-corner{
    position:absolute;
    top:0;left:0;
    z-index:2;
    background:var(--volt);
    color:var(--ink);
    font-size:12px;
    font-weight:700;
    letter-spacing:.08em;
    padding:7px 14px;
    border-bottom-right-radius:var(--r-badge);
  }

  /* ---------- 板块通用 ---------- */
  .sec{padding:var(--pad-sec) 0;}
  .sec-white{background:var(--white);}
  .sec-mist{background:var(--mist);}
  .sec-paper{background:var(--paper);}
  .sec-head{max-width:760px;}
  .sec-title{
    font-size:clamp(24px,2.6vw,34px);
    line-height:1.28;
    font-weight:700;
    letter-spacing:-.01em;
  }
  .sec-sub{
    margin-top:14px;
    font-size:16px;
    line-height:1.8;
    color:var(--steel);
  }
  .sec-head-row{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:32px;
    flex-wrap:wrap;
  }
  .sec-body{margin-top:40px;}

  /* ---------- 安全清单 ---------- */
  .checklist-card{
    background:var(--white);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:8px 24px;
    box-shadow:var(--shadow-card);
  }
  .check-row{
    display:grid;
    grid-template-columns:48px 1fr auto;
    align-items:center;
    gap:20px;
    min-height:72px;
    padding:16px 4px;
    border-bottom:1px solid var(--line);
    transition:background-color .18s var(--ease);
  }
  .check-row:last-child{border-bottom:0;}
  .check-row:hover{background:var(--paper);}
  .check-idx{
    font-size:15px;
    font-weight:800;
    color:var(--ink-2);
    font-variant-numeric:tabular-nums;
    letter-spacing:.04em;
  }
  .check-title{
    font-size:17px;
    font-weight:700;
    line-height:1.45;
  }
  .check-desc{
    margin-top:4px;
    font-size:14px;
    line-height:1.7;
    color:var(--steel);
  }

  /* ---------- 对比表 ---------- */
  .compare-card{
    background:var(--white);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
    box-shadow:var(--shadow-card);
  }
  .compare-table{
    width:100%;
    border-collapse:collapse;
  }
  .compare-table thead th{
    background:var(--ink);
    color:var(--white);
    font-size:14px;
    font-weight:700;
    text-align:left;
    padding:18px 24px;
    letter-spacing:.02em;
  }
  .compare-table tbody td{
    padding:18px 24px;
    font-size:15px;
    line-height:1.7;
    border-top:1px solid var(--line);
    vertical-align:top;
  }
  .compare-table tbody tr:hover td{background:var(--paper);}
  .mark{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:20px;height:20px;
    font-size:13px;
    font-weight:800;
    line-height:1;
    margin-right:10px;
    flex-shrink:0;
  }
  .mark-yes{color:var(--ink);}
  .mark-no{color:var(--alert);}
  .cell-line{display:flex;align-items:flex-start;}

  /* ---------- 三步自检 ---------- */
  .steps{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
    position:relative;
  }
  .step{
    background:var(--white);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:28px 24px;
    box-shadow:var(--shadow-card);
    transition:transform .18s var(--ease), box-shadow .18s var(--ease), border-color .18s var(--ease);
  }
  .step:hover{
    transform:translateY(-3px);
    box-shadow:var(--shadow-hover);
    border-color:var(--volt);
  }
  .step-num{
    width:40px;height:40px;
    border-radius:50%;
    border:1px solid var(--ink);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:14px;
    font-weight:800;
    font-variant-numeric:tabular-nums;
    color:var(--ink);
  }
  .step-title{
    margin-top:18px;
    font-size:20px;
    font-weight:700;
    line-height:1.45;
  }
  .step-desc{
    margin-top:10px;
    font-size:15px;
    line-height:1.8;
    color:var(--steel);
  }
  .step-note{
    margin-top:16px;
    padding-top:14px;
    border-top:1px dashed var(--line);
    font-size:13px;
    color:var(--steel);
  }

  /* ---------- 图片说明区 ---------- */
  .split{
    display:grid;
    grid-template-columns:5fr 7fr;
    gap:56px;
    align-items:center;
  }
  .split-figure{
    position:relative;
    border-radius:var(--r-card);
    overflow:hidden;
    border:1px solid var(--line);
    aspect-ratio:16 / 10;
    background:var(--ink-2);
  }
  .split-figure img{width:100%;height:100%;object-fit:cover;}
  .split-figure::after{
    content:"";
    position:absolute;
    inset:0;
    background:rgba(14,17,20,.18);
    pointer-events:none;
  }
  .point-list{margin-top:24px;display:grid;gap:14px;}
  .point-list li{
    display:flex;
    gap:12px;
    font-size:15px;
    line-height:1.8;
    color:var(--ink-2);
  }
  .point-list li::before{
    content:"";
    width:6px;height:6px;
    background:var(--volt);
    margin-top:10px;
    flex-shrink:0;
  }

  /* ---------- FAQ ---------- */
  .faq-list{
    border-top:1px solid var(--line);
  }
  .faq-item{
    border-bottom:1px solid var(--line);
  }
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    min-height:60px;
    padding:18px 4px;
    background:transparent;
    border:0;
    text-align:left;
    font-size:17px;
    font-weight:600;
    line-height:1.5;
    color:var(--ink);
    cursor:pointer;
    transition:color .18s var(--ease);
  }
  .faq-q:hover{color:var(--ink-2);}
  .faq-q:focus-visible{outline:2px solid var(--ink);outline-offset:2px;}
  .faq-icon{
    flex-shrink:0;
    width:24px;height:24px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:18px;
    font-weight:700;
    color:var(--ink);
    transition:transform .2s var(--ease);
  }
  .faq-item.is-open .faq-icon{transform:rotate(45deg);}
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height .26s var(--ease);
  }
  .faq-item.is-open .faq-a{max-height:360px;}
  .faq-a p{
    padding:0 4px 20px;
    font-size:15px;
    line-height:1.85;
    color:var(--steel);
    max-width:820px;
  }

  /* ---------- CTA ---------- */
  .cta-band{
    background:var(--ink);
    border-top:2px solid var(--volt);
    padding:64px 0;
  }
  .cta-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:40px;
    flex-wrap:wrap;
  }
  .cta-band .cta-title{
    font-size:clamp(24px,2.4vw,32px);
    line-height:1.3;
    font-weight:700;
    color:var(--white);
    letter-spacing:-.01em;
  }
  .cta-band .cta-desc{
    margin-top:12px;
    font-size:15px;
    line-height:1.8;
    color:rgba(255,255,255,.68);
    max-width:560px;
  }

  /* ---------- Footer ---------- */
  .site-footer{
    background:var(--ink-3);
    color:var(--white);
    padding:72px 0 40px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:repeat(12,1fr);
    gap:24px;
  }
  .footer-brand{grid-column:span 5;}
  .footer-col-2{grid-column:span 2;}
  .footer-col-3{grid-column:span 3;}
  .footer-brand .brand-name{color:var(--white);}
  .footer-brand .brand-name span{color:rgba(255,255,255,.78);}
  .footer-desc{
    margin-top:18px;
    font-size:14px;
    line-height:1.85;
    color:rgba(255,255,255,.6);
    max-width:320px;
  }
  .status{
    display:inline-flex;
    align-items:center;
    gap:8px;
    margin-top:20px;
    font-size:12px;
    line-height:1.6;
    color:rgba(255,255,255,.55);
  }
  .status-dot{
    width:8px;height:8px;
    border-radius:50%;
    background:var(--volt);
    flex-shrink:0;
  }
  .footer-title{
    font-size:13px;
    font-weight:700;
    letter-spacing:.1em;
    color:var(--white);
    margin-bottom:16px;
  }
  .footer-links li{margin:0;}
  .footer-links a{
    display:inline-block;
    font-size:14px;
    line-height:2.2;
    color:rgba(255,255,255,.72);
    transition:color .18s var(--ease), border-color .18s var(--ease);
    border-bottom:1px solid transparent;
  }
  .footer-links a:hover{color:var(--volt);border-bottom-color:var(--volt);}
  .footer-links a:focus-visible{outline:2px solid var(--volt);outline-offset:3px;}
  .footer-bottom{
    margin-top:48px;
    padding-top:24px;
    border-top:1px solid rgba(255,255,255,.12);
    display:flex;
    align-items:flex-start;
    justify-content:space-between;
    gap:20px;
    flex-wrap:wrap;
    font-size:12px;
    line-height:1.8;
    color:rgba(255,255,255,.5);
  }
  .footer-bottom .legal{max-width:560px;}

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    :root{--pad-sec:80px;}
    .container{padding:0 32px;}
    .nav-links{display:none;}
    .header-actions .btn{display:none;}
    .nav-toggle{display:inline-flex;}
    .header-inner{height:64px;}
    .hero{padding:56px 0 64px;}
    .hero-grid{grid-template-columns:1fr;gap:36px;}
    .hero-figure{order:2;}
    .split{grid-template-columns:1fr;gap:36px;}
    .steps{grid-template-columns:1fr;}
    .footer-brand{grid-column:span 12;}
    .footer-col-2{grid-column:span 4;}
    .footer-col-3{grid-column:span 4;}
  }

  @media (max-width:767px){
    .compare-table thead{display:none;}
    .compare-table,
    .compare-table tbody,
    .compare-table tr,
    .compare-table td{display:block;width:100%;}
    .compare-table tbody tr{
      border-top:1px solid var(--line);
      padding:8px 0;
    }
    .compare-table tbody td{
      border-top:0;
      padding:10px 20px;
    }
    .compare-table tbody td::before{
      content:attr(data-label);
      display:block;
      font-size:12px;
      font-weight:700;
      letter-spacing:.08em;
      color:var(--steel);
      margin-bottom:4px;
    }
    .check-row{
      grid-template-columns:36px 1fr;
      row-gap:10px;
      align-items:flex-start;
    }
    .check-badge-cell{grid-column:2;justify-self:start;}
  }

  @media (max-width:639px){
    :root{--pad-sec:64px;}
    .container{padding:0 20px;}
    .brand-name{font-size:17px;}
    h1{font-size:29px;line-height:1.22;}
    .hero-actions .btn{width:100%;}
    .sec-body{margin-top:28px;}
    .checklist-card{padding:4px 16px;}
    .cta-inner{flex-direction:column;align-items:flex-start;}
    .cta-inner .btn{width:100%;}
    .footer-col-2,.footer-col-3{grid-column:span 12;}
    .footer-grid{gap:32px;}
  }

  @media (prefers-reduced-motion:reduce){
    *{transition-duration:.001ms !important;animation-duration:.001ms !important;}
    html{scroll-behavior:auto;}
  }

/* roulang page: category3 */
:root{
    --ink:#15181C;
    --ink-2:#242A31;
    --ink-3:#0E1114;
    --steel:#5B6570;
    --line:#DCD8CF;
    --paper:#F7F5F0;
    --mist:#EDEAE3;
    --white:#FFFFFF;
    --volt:#F2C200;
    --volt-deep:#C79B00;
    --alert:#A8452C;
    --r-card:14px;
    --r-btn:10px;
    --r-field:8px;
    --r-badge:6px;
    --shadow-soft:0 1px 2px rgba(21,24,28,.06);
    --shadow-lift:0 18px 40px -24px rgba(21,24,28,.25);
    --ease:180ms ease-out;
    --container:1200px;
    --gutter:48px;
  }

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

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter);}
  .num{font-family:"Barlow","Inter",sans-serif;font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
    transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
    white-space:nowrap;
  }
  .btn-primary{background:var(--volt);color:var(--ink);}
  .btn-primary:hover{background:var(--volt-deep);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-primary:focus-visible{outline:2px solid var(--ink);outline-offset:3px;}
  .btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
  .btn-ghost:hover{background:var(--ink);color:#fff;}
  .btn-ghost:focus-visible{outline:2px solid var(--volt-deep);outline-offset:3px;}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;}
  .btn-block{width:100%;}
  .btn-link{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);
    padding-bottom:2px;border-bottom:2px solid transparent;transition:border-color var(--ease),color var(--ease);
  }
  .btn-link:hover{border-bottom-color:var(--volt);}
  .btn-link svg{transition:transform var(--ease);}
  .btn-link:hover svg{transform:translateX(2px);}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;background:var(--paper);
    border-bottom:1px solid var(--line);
    transition:box-shadow var(--ease);
  }
  .site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(21,24,28,.5);}
  .header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:32px;}

  .brand{display:inline-flex;align-items:center;gap:10px;flex:none;}
  .brand-mark{
    position:relative;width:28px;height:28px;flex:none;border-radius:4px;background:var(--volt);overflow:hidden;
  }
  .brand-mark::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(135deg,transparent 45%,var(--ink) 45%,var(--ink) 55%,transparent 55%);
  }
  .brand-name{display:inline-flex;align-items:baseline;gap:2px;font-size:19px;line-height:1;letter-spacing:.01em;}
  .brand-name strong{font-weight:800;color:var(--ink);}
  .brand-name span{font-weight:400;color:var(--ink-2);}

  .nav-links{display:flex;align-items:center;gap:30px;}
  .nav-link{
    position:relative;font-size:15px;font-weight:600;color:var(--ink);padding:6px 0;
    transition:color var(--ease);
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:-10px;height:2px;background:var(--volt);
    transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
  }
  .nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1);}
  .nav-link.is-active{font-weight:800;}
  .nav-link.is-active::before{
    content:"";position:absolute;left:-13px;top:50%;width:6px;height:6px;border-radius:1px;
    background:var(--volt);transform:translateY(-50%);
  }
  .header-actions{display:flex;align-items:center;gap:12px;}

  .nav-toggle{
    display:none;align-items:center;justify-content:center;width:44px;height:44px;
    border:1px solid var(--line);border-radius:var(--r-btn);background:var(--white);
    transition:border-color var(--ease),background-color var(--ease);
  }
  .nav-toggle:hover{border-color:var(--ink);}
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
  .nav-toggle span::before,.nav-toggle span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);transition:transform var(--ease);
  }
  .nav-toggle span::before{top:-6px;}
  .nav-toggle span::after{top:6px;}

  /* 移动抽屉 */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(21,24,28,.45);z-index:70;
    opacity:0;pointer-events:none;transition:opacity 200ms ease-out;
  }
  .drawer-mask.is-open{opacity:1;pointer-events:auto;}
  .drawer{
    position:fixed;top:0;right:0;height:100%;width:88%;max-width:380px;z-index:80;
    background:var(--paper);display:flex;flex-direction:column;
    transform:translateX(100%);transition:transform 220ms ease-out;
    box-shadow:-24px 0 48px -32px rgba(21,24,28,.55);
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line);}
  .drawer-close{
    width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
    border:1px solid var(--line);border-radius:var(--r-btn);background:var(--white);font-size:20px;line-height:1;
    transition:border-color var(--ease),color var(--ease);
  }
  .drawer-close:hover{border-color:var(--ink);}
  .drawer-nav{padding:8px 20px;flex:1;overflow-y:auto;}
  .drawer-nav a{
    display:flex;align-items:center;gap:14px;height:56px;border-bottom:1px solid var(--line);
    font-size:18px;font-weight:600;color:var(--ink);
  }
  .drawer-nav a .idx{font-size:12px;color:var(--steel);letter-spacing:.08em;}
  .drawer-nav a.is-active{color:var(--ink);font-weight:800;}
  .drawer-nav a.is-active .idx{color:var(--volt-deep);}
  .drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line);}

  /* ---------- Hero（常见问题） ---------- */
  .hero-faq{
    background:var(--paper);
    border-bottom:1px solid var(--line);
    padding:64px 0 56px;
  }
  .hero-inner{max-width:760px;margin:0 auto;text-align:center;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.12em;font-weight:600;color:var(--steel);
    text-transform:uppercase;
  }
  .eyebrow::before{content:"";width:6px;height:6px;background:var(--volt);border-radius:1px;display:inline-block;}
  .hero-faq h1{
    margin-top:20px;
    font-size:clamp(28px,4.2vw,42px);
    line-height:1.2;font-weight:800;letter-spacing:-.01em;color:var(--ink);
  }
  .hero-faq h1 em{font-style:normal;color:var(--ink-2);font-weight:500;}
  .hero-sub{
    margin-top:18px;font-size:16px;line-height:1.8;color:var(--steel);
    max-width:620px;margin-left:auto;margin-right:auto;
  }
  .search-bar{
    margin-top:30px;display:flex;align-items:center;gap:10px;
    background:var(--white);border:1px solid var(--line);border-radius:var(--r-btn);
    padding:6px 6px 6px 14px;box-shadow:var(--shadow-soft);
    transition:border-color var(--ease),box-shadow var(--ease);
  }
  .search-bar:focus-within{border-color:var(--ink);box-shadow:0 0 0 2px var(--volt);}
  .search-field{position:relative;flex:1;display:flex;align-items:center;gap:10px;}
  .search-field svg{flex:none;color:var(--steel);}
  .search-field input{
    width:100%;height:44px;border:0;background:transparent;font-size:15px;color:var(--ink);
  }
  .search-field input::placeholder{color:#9AA0A6;}
  .search-field input:focus{outline:none;}
  .quick-tags{
    margin-top:20px;display:flex;flex-wrap:wrap;gap:8px;justify-content:center;
  }
  .quick-tag{
    display:inline-flex;align-items:center;height:32px;padding:0 12px;border-radius:var(--r-badge);
    background:var(--mist);color:var(--ink-2);font-size:13px;font-weight:500;
    transition:background-color var(--ease),color var(--ease);
  }
  .quick-tag:hover{background:var(--ink);color:#fff;}

  /* ---------- 主体两栏 ---------- */
  .section-pad{padding:80px 0;}
  .faq-layout{display:grid;grid-template-columns:248px 1fr;gap:48px;align-items:start;}

  .side-pills{position:sticky;top:100px;display:flex;flex-direction:column;gap:8px;}
  .side-title{
    font-size:12px;letter-spacing:.12em;color:var(--steel);font-weight:600;margin-bottom:4px;text-transform:uppercase;
  }
  .pill{
    display:flex;align-items:center;gap:10px;
    padding:12px 16px;border-radius:var(--r-badge);border:1px solid var(--line);background:var(--white);
    font-size:14px;font-weight:600;color:var(--ink-2);
    transition:background-color var(--ease),color var(--ease),border-color var(--ease);
  }
  .pill .idx{font-size:11px;color:var(--steel);letter-spacing:.06em;}
  .pill:hover{background:var(--mist);border-color:var(--line);}
  .pill.is-active{background:var(--ink);border-color:var(--ink);color:#fff;}
  .pill.is-active .idx{color:var(--volt);}

  .side-card{
    margin-top:24px;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
    overflow:hidden;box-shadow:var(--shadow-soft);
  }
  .side-card-bar{height:3px;background:var(--volt);}
  .side-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
  .side-card-body{padding:16px;}
  .side-card-body h3{font-size:15px;font-weight:700;line-height:1.5;}
  .side-card-body p{margin-top:8px;font-size:13px;line-height:1.75;color:var(--steel);}

  .faq-group{margin-bottom:48px;scroll-margin-top:100px;}
  .faq-group:last-child{margin-bottom:0;}
  .faq-group-head{display:flex;align-items:baseline;gap:12px;padding-bottom:14px;border-bottom:2px solid var(--ink);}
  .faq-group-head .no{
    font-size:13px;font-weight:700;color:var(--volt-deep);letter-spacing:.06em;
  }
  .faq-group-head h2{font-size:20px;font-weight:700;line-height:1.4;color:var(--ink);}

  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:56px;padding:16px 0;text-align:left;
    font-size:16px;font-weight:600;color:var(--ink);line-height:1.55;
    transition:color var(--ease);
  }
  .faq-q:hover{color:var(--ink-2);}
  .faq-q:hover .faq-icon::before,.faq-q:hover .faq-icon::after{background:var(--volt-deep);}
  .faq-icon{position:relative;width:18px;height:18px;flex:none;}
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;background:var(--ink);border-radius:1px;transition:transform var(--ease),background-color var(--ease);
  }
  .faq-icon::before{top:8px;left:0;width:18px;height:2px;}
  .faq-icon::after{top:0;left:8px;width:2px;height:18px;}
  .faq-q[aria-expanded="true"] .faq-icon::after{transform:scaleY(0);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height 260ms ease-out;}
  .faq-a.is-open{max-height:520px;}
  .faq-a p{
    padding:0 0 18px;font-size:15px;line-height:1.85;color:var(--steel);max-width:66ch;
  }
  .faq-a p strong{color:var(--ink);font-weight:600;}

  /* ---------- 反馈表单 ---------- */
  .feedback-wrap{background:var(--mist);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:72px 0;}
  .feedback-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
  .feedback-intro .eyebrow{margin-bottom:16px;}
  .feedback-intro h2{font-size:clamp(24px,3vw,32px);line-height:1.3;font-weight:700;}
  .feedback-intro p{margin-top:16px;font-size:15px;line-height:1.85;color:var(--steel);max-width:40ch;}
  .feedback-points{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
  .feedback-points li{
    display:flex;gap:12px;align-items:flex-start;font-size:14px;line-height:1.7;color:var(--ink-2);
  }
  .feedback-points li::before{
    content:"";flex:none;width:6px;height:6px;margin-top:9px;background:var(--volt);border-radius:1px;
  }

  .form-card{
    background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
    padding:32px;box-shadow:var(--shadow-soft);
  }
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
  .field{margin-bottom:20px;}
  .field-label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:8px;}
  .field-label .req{color:var(--alert);}
  .input{
    width:100%;height:48px;padding:0 14px;background:var(--white);
    border:1px solid var(--line);border-radius:var(--r-field);
    font-size:15px;color:var(--ink);
    transition:border-color var(--ease),box-shadow var(--ease);
  }
  .input::placeholder{color:#9AA0A6;}
  .input:hover{border-color:#C4BFB4;}
  .input:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 2px var(--volt);}
  select.input{
    appearance:none;-webkit-appearance:none;
    background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%235B6570' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
    background-repeat:no-repeat;background-position:right 14px center;padding-right:38px;
  }
  textarea.input{height:120px;padding:12px 14px;line-height:1.7;resize:vertical;}
  .field-help{margin-top:6px;font-size:12px;color:var(--steel);line-height:1.6;}
  .field-error{display:none;margin-top:6px;font-size:12px;color:var(--alert);}
  .check-row{display:flex;align-items:flex-start;gap:10px;margin:4px 0 22px;}
  .check-row input[type="checkbox"]{
    width:16px;height:16px;margin-top:4px;accent-color:var(--ink);flex:none;
  }
  .check-row label{font-size:13px;line-height:1.7;color:var(--steel);}
  .check-row label a{color:var(--ink);border-bottom:1px solid var(--volt);}

  /* ---------- CTA 带 ---------- */
  .cta-band{
    background:var(--ink);border-top:2px solid var(--volt);
    padding:56px 0;
  }
  .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
  .cta-inner h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;color:#fff;}
  .cta-inner p{margin-top:10px;font-size:15px;line-height:1.7;color:rgba(255,255,255,.65);max-width:52ch;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink-3);color:rgba(255,255,255,.72);padding:72px 0 40px;}
  .footer-grid{display:grid;grid-template-columns:5fr 2fr 2fr 3fr;gap:32px;}
  .site-footer .brand-name strong{color:#fff;}
  .site-footer .brand-name span{color:rgba(255,255,255,.72);}
  .footer-desc{margin-top:16px;font-size:13px;line-height:1.8;color:rgba(255,255,255,.6);max-width:320px;}
  .status{display:flex;align-items:center;gap:8px;margin-top:18px;font-size:12px;color:rgba(255,255,255,.55);}
  .status-dot{width:8px;height:8px;border-radius:50%;background:var(--volt);box-shadow:0 0 0 3px rgba(242,194,0,.18);flex:none;}
  .footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
  .footer-links{display:flex;flex-direction:column;gap:10px;}
  .footer-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color var(--ease);}
  .footer-links a:hover{color:var(--volt);text-decoration:underline;text-underline-offset:4px;}
  .footer-bottom{
    margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
    display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:12px;color:rgba(255,255,255,.45);
  }
  .legal{max-width:640px;}

  /* ---------- 响应式 ---------- */
  @media (max-width:1279px){
    :root{--container:1200px;}
  }
  @media (max-width:1023px){
    :root{--gutter:32px;}
    .nav-links{display:none;}
    .nav-toggle{display:inline-flex;}
    .header-cta{display:none;}
    .header-inner{height:64px;}
    .section-pad{padding:64px 0;}
    .hero-faq{padding:48px 0 44px;}
    .faq-layout{grid-template-columns:1fr;gap:32px;}
    .side-pills{
      position:static;flex-direction:row;gap:8px;overflow-x:auto;padding-bottom:10px;
      margin:0 calc(var(--gutter) * -1);padding-left:var(--gutter);padding-right:var(--gutter);
      scrollbar-width:thin;
    }
    .side-title{display:none;}
    .pill{flex:none;white-space:nowrap;}
    .side-card{margin-top:20px;}
    .feedback-grid{grid-template-columns:1fr;gap:32px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  }
  @media (max-width:767px){
    .form-row{grid-template-columns:1fr;gap:0;}
    .form-card{padding:24px;}
    .cta-inner{flex-direction:column;align-items:flex-start;}
    .cta-inner .btn{width:100%;}
    .feedback-wrap{padding:56px 0;}
  }
  @media (max-width:639px){
    :root{--gutter:20px;}
    .hero-faq{padding:40px 0 36px;}
    .search-bar{flex-wrap:wrap;padding:10px;}
    .search-field{width:100%;}
    .search-bar .btn{width:100%;}
    .quick-tags{justify-content:flex-start;}
    .section-pad{padding:56px 0;}
    .faq-q{font-size:15px;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;gap:10px;}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important;}
  }

/* roulang page: category4 */
:root{
  --ink:#15181C;
  --ink-2:#242A31;
  --ink-3:#0E1114;
  --steel:#5B6570;
  --line:#DCD8CF;
  --paper:#F7F5F0;
  --mist:#EDEAE3;
  --white:#FFFFFF;
  --volt:#F2C200;
  --volt-deep:#C79B00;
  --alert:#A8452C;
  --r-card:14px;
  --r-btn:10px;
  --r-input:8px;
  --r-badge:6px;
  --r-img:12px;
  --sh-card:0 1px 2px rgba(21,24,28,.06);
  --sh-hover:0 18px 40px -24px rgba(21,24,28,.25);
  --tr:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
body{
  margin:0;
  padding:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC","Barlow",Inter,system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{list-style:none;margin:0;padding:0}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin-left:auto;margin-right:auto;padding-left:48px;padding-right:48px}
@media (max-width:1023px){.container{padding-left:32px;padding-right:32px}}
@media (max-width:639px){.container{padding-left:20px;padding-right:20px}}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--tr);
}
.site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(21,24,28,.45)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:28px;height:28px;flex:0 0 auto;
  background:var(--volt);
  border-radius:3px;
  clip-path:polygon(0 0,100% 0,100% 62%,60% 100%,0 100%);
}
.brand-name{display:inline-flex;align-items:baseline;gap:2px;font-size:18px;line-height:1.2;letter-spacing:.01em;white-space:nowrap;color:var(--ink)}
.brand-name strong{font-weight:800}
.brand-name span{font-weight:400;color:var(--ink-2)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 0;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  transition:color var(--tr);
}
.nav-link::before{
  content:"";
  display:inline-block;
  width:0;height:6px;
  background:var(--volt);
  border-radius:1px;
  transition:width var(--tr);
}
.nav-link.is-active{font-weight:800}
.nav-link.is-active::before{width:6px}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  background:var(--volt);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--tr);
}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link:focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:4px}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-mobile-cta{display:none}
.nav-close{display:none}
.nav-overlay{
  position:fixed;inset:0;
  background:rgba(14,17,20,.5);
  opacity:0;pointer-events:none;
  transition:opacity var(--tr);
  z-index:75;
}
body.nav-open .nav-overlay{opacity:1;pointer-events:auto}
.menu-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:8px;
  background:var(--white);
  transition:border-color var(--tr),background-color var(--tr);
}
.menu-toggle:hover{border-color:var(--ink)}
.menu-toggle:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.menu-toggle .bars{position:relative;display:block;width:18px;height:2px;background:var(--ink)}
.menu-toggle .bars::before,
.menu-toggle .bars::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.menu-toggle .bars::before{top:-6px}
.menu-toggle .bars::after{top:6px}

/* ===== 按钮与徽章 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  transition:background-color var(--tr),color var(--tr),border-color var(--tr),transform var(--tr),box-shadow var(--tr);
}
.btn-primary{background:var(--volt);color:var(--ink)}
.btn-primary:hover{background:var(--volt-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-primary:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-ghost:focus-visible{outline:2px solid var(--volt-deep);outline-offset:3px}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--ink);
  border-bottom:2px solid transparent;
  transition:border-color var(--tr),color var(--tr);
}
.btn-text .arw{transition:transform var(--tr)}
.btn-text:hover{border-bottom-color:var(--volt)}
.btn-text:hover .arw{transform:translateX(2px)}
.btn-text:focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:4px}
.badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 8px;
  border-radius:var(--r-badge);
  font-size:12px;font-weight:600;
  letter-spacing:.02em;
}
.badge-ink{background:var(--ink);color:#fff}
.badge-mist{background:var(--mist);color:var(--ink)}
.badge-volt{background:var(--volt);color:var(--ink)}

/* ===== 首屏 ===== */
.page-hero{background:var(--paper);padding:56px 0 40px;border-bottom:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.12em;
  color:var(--ink-2);
}
.eyebrow-dot{width:6px;height:6px;background:var(--volt);border-radius:1px}
.page-title{
  margin-top:14px;
  font-size:40px;
  line-height:1.2;
  font-weight:800;
  letter-spacing:-.01em;
  max-width:880px;
}
.page-sub{
  margin-top:16px;
  font-size:16px;
  line-height:1.8;
  color:var(--steel);
  max-width:720px;
}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.chip{
  display:inline-flex;align-items:center;justify-content:center;
  height:36px;padding:0 16px;
  border:1px solid var(--line);
  border-radius:var(--r-badge);
  background:var(--white);
  font-size:14px;font-weight:600;color:var(--ink-2);
  transition:background-color var(--tr),color var(--tr),border-color var(--tr);
}
.chip:hover{border-color:var(--ink);color:var(--ink)}
.chip.is-on{background:var(--ink);color:#fff;border-color:var(--ink)}
.chip:focus-visible{outline:2px solid var(--ink);outline-offset:3px}

/* ===== 主体布局 ===== */
.section{padding:56px 0 72px}
.news-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:48px;
  align-items:start;
}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.sec-title{font-size:30px;line-height:1.28;font-weight:700;letter-spacing:-.01em}
.sec-note{margin-top:10px;font-size:15px;color:var(--steel);max-width:640px}

/* ===== 首条大卡 ===== */
.lead-card{
  display:grid;
  grid-template-columns:5fr 7fr;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-card);
  transition:border-color var(--tr),box-shadow var(--tr),transform var(--tr);
}
.lead-card:hover{border-color:var(--volt);box-shadow:var(--sh-hover);transform:translateY(-3px)}
.lead-media{position:relative;overflow:hidden;min-height:260px;background:var(--mist)}
.lead-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--tr)}
.lead-card:hover .lead-media img{transform:scale(1.03)}
.lead-media .badge{position:absolute;left:14px;top:14px}
.lead-body{padding:28px 30px;display:flex;flex-direction:column}
.lead-kicker{font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--steel)}
.lead-title{margin-top:10px;font-size:25px;line-height:1.4;font-weight:700}
.lead-desc{margin-top:12px;font-size:15px;line-height:1.8;color:var(--steel)}
.lead-foot{margin-top:auto;padding-top:20px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:var(--steel)}

/* ===== 列表卡 ===== */
.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:24px}
.news-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-card);
  transition:border-color var(--tr),box-shadow var(--tr),transform var(--tr);
  height:100%;
}
.news-card:hover{border-color:var(--volt);box-shadow:var(--sh-hover);transform:translateY(-3px)}
.card-link{display:flex;flex-direction:column;height:100%}
.card-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--mist)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--tr)}
.news-card:hover .card-media img{transform:scale(1.03)}
.card-media .badge{position:absolute;left:12px;top:12px}
.card-body{padding:20px;display:flex;flex-direction:column;flex:1}
.card-title{font-size:17px;line-height:1.5;font-weight:700}
.card-title a:hover{color:var(--ink-2)}
.card-desc{margin-top:10px;font-size:14px;line-height:1.75;color:var(--steel);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12px;color:var(--steel)}
.card-foot .arw{font-size:14px;color:var(--ink);transition:transform var(--tr)}
.news-card:hover .card-foot .arw{transform:translateX(3px)}

/* ===== 分页 ===== */
.pager{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:40px;flex-wrap:wrap}
.pager a,.pager span{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:40px;height:40px;padding:0 12px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-badge);
  font-size:14px;font-weight:600;color:var(--ink-2);
  transition:background-color var(--tr),color var(--tr),border-color var(--tr);
}
.pager a:hover{border-color:var(--ink);color:var(--ink)}
.pager .is-current{background:var(--ink);color:#fff;border-color:var(--ink)}
.pager a:focus-visible,.pager span:focus-visible{outline:2px solid var(--ink);outline-offset:3px}

/* ===== 侧栏 ===== */
.news-side{position:sticky;top:96px;display:grid;gap:20px}
.side-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px;
  box-shadow:var(--sh-card);
}
.side-title{font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--steel);margin-bottom:12px}
.search-box{display:flex;gap:8px}
.field{
  width:100%;
  height:44px;
  padding:0 12px;
  border:1px solid var(--line);
  border-radius:var(--r-input);
  background:var(--white);
  font-size:14px;
  color:var(--ink);
  transition:border-color var(--tr),box-shadow var(--tr);
}
.field::placeholder{color:#98A1AA}
.field:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 2px var(--volt)}
.btn-search{height:44px;padding:0 16px;flex:0 0 auto}
.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;
  height:28px;padding:0 10px;
  background:var(--mist);
  border-radius:var(--r-badge);
  font-size:12px;color:var(--ink-2);
  transition:background-color var(--tr),color var(--tr);
}
.tag:hover{background:var(--volt);color:var(--ink)}
.tag:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.tip-card{
  background:var(--white);
  border:1px solid var(--line);
  border-top:3px solid var(--volt);
  border-radius:var(--r-card);
  padding:20px;
  box-shadow:var(--sh-card);
}
.tip-card p{font-size:14px;line-height:1.8;color:var(--steel);margin-top:10px}
.tip-card .tip-head{font-size:15px;font-weight:700;color:var(--ink)}

/* ===== 本周更新 ===== */
.section-mist{background:var(--mist);padding:72px 0}
.update-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.update-item{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-card);
  transition:border-color var(--tr),box-shadow var(--tr),transform var(--tr);
}
.update-item:hover{border-color:var(--volt);box-shadow:var(--sh-hover);transform:translateY(-3px)}
.update-no{
  display:inline-flex;align-items:center;justify-content:center;
  height:26px;padding:0 8px;
  background:var(--mist);
  border-radius:var(--r-badge);
  font-size:12px;font-weight:700;color:var(--ink-2);
  font-variant-numeric:tabular-nums;
  letter-spacing:.06em;
}
.update-title{margin-top:14px;font-size:18px;line-height:1.45;font-weight:700}
.update-desc{margin-top:10px;font-size:14px;line-height:1.75;color:var(--steel)}

/* ===== FAQ ===== */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:16px 0;
  font-size:16px;font-weight:600;line-height:1.6;text-align:left;color:var(--ink);
  transition:color var(--tr);
}
.faq-q:hover{color:var(--ink-2)}
.faq-q:focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:4px}
.faq-icon{position:relative;flex:0 0 auto;width:20px;height:20px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--ink);
  transform:translate(-50%,-50%);
  transition:transform var(--tr),opacity var(--tr);
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows var(--tr)}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a > div{overflow:hidden}
.faq-a p{padding:0 0 18px;font-size:15px;line-height:1.8;color:var(--steel);max-width:660px}

/* ===== 底部 CTA ===== */
.cta-band{background:var(--ink);border-top:2px solid var(--volt);padding:56px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px}
.cta-title{font-size:30px;line-height:1.3;font-weight:700;color:#fff}
.cta-note{margin-top:12px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.68);max-width:620px}

/* ===== 页脚 ===== */
.site-footer{background:var(--ink-3);color:#fff;padding-top:72px;padding-bottom:40px}
.footer-grid{
  display:grid;
  grid-template-columns:5fr 2fr 2fr 3fr;
  gap:32px;
  padding-bottom:48px;
}
.site-footer .brand-name{color:#fff}
.site-footer .brand-name span{color:rgba(255,255,255,.72)}
.footer-desc{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:330px}
.status{display:inline-flex;align-items:center;gap:8px;margin-top:18px;font-size:12px;color:rgba(255,255,255,.6)}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--volt);box-shadow:0 0 0 3px rgba(242,194,0,.18)}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.footer-links li{margin-bottom:10px}
.footer-links a{
  font-size:14px;
  color:rgba(255,255,255,.72);
  transition:color var(--tr),border-color var(--tr);
  border-bottom:1px solid transparent;
}
.footer-links a:hover{color:var(--volt);border-bottom-color:var(--volt)}
.footer-links a:focus-visible{outline:2px solid var(--volt);outline-offset:3px;border-radius:3px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding-top:24px;
  display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
  font-size:12px;color:rgba(255,255,255,.5);line-height:1.8;
}
.footer-bottom .legal{max-width:640px}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .news-layout{grid-template-columns:minmax(0,1fr) 290px;gap:32px}
}
@media (max-width:1023px){
  .header-inner{height:64px}
  .header-cta{display:none}
  .menu-toggle{display:inline-flex}
  .nav-links{
    position:fixed;
    top:0;right:0;
    height:100%;
    width:88%;
    max-width:380px;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:84px 24px 32px;
    background:var(--paper);
    border-left:1px solid var(--line);
    transform:translateX(102%);
    transition:transform var(--tr);
    z-index:90;
    overflow-y:auto;
  }
  body.nav-open .nav-links{transform:translateX(0)}
  .nav-link{
    font-size:18px;
    line-height:56px;
    padding:0;
    border-bottom:1px solid var(--line);
    display:flex;
    gap:12px;
  }
  .nav-link::after{display:none}
  .nav-link::before{
    content:"01";
    display:inline-block;
    width:auto;height:auto;
    background:transparent;
    border-radius:0;
    font-size:12px;font-weight:700;letter-spacing:.1em;
    color:var(--steel);
  }
  .nav-links .nav-link:nth-child(1)::before{content:"01"}
  .nav-links .nav-link:nth-child(2)::before{content:"02"}
  .nav-links .nav-link:nth-child(3)::before{content:"03"}
  .nav-links .nav-link:nth-child(4)::before{content:"04"}
  .nav-links .nav-link:nth-child(5)::before{content:"05"}
  .nav-link.is-active::before{width:auto;background:transparent;color:var(--volt-deep)}
  .nav-mobile-cta{display:block;margin-top:28px}
  .nav-close{
    display:inline-flex;
    align-items:center;justify-content:center;
    position:absolute;top:16px;right:16px;
    width:44px;height:44px;
    border:1px solid var(--line);
    border-radius:8px;
    background:var(--white);
    font-size:20px;line-height:1;
    color:var(--ink);
  }
  .nav-close:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
  .news-layout{grid-template-columns:1fr;gap:40px}
  .news-side{position:static}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .update-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px}
  .page-title{font-size:34px}
  .section{padding:48px 0 64px}
  .section-mist{padding:56px 0}
}
@media (max-width:767px){
  .lead-card{grid-template-columns:1fr}
  .lead-media{min-height:0;aspect-ratio:16/10}
  .lead-body{padding:22px 20px}
  .lead-title{font-size:21px}
  .news-grid{grid-template-columns:1fr}
  .update-grid{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px}
  .cta-title{font-size:24px}
  .footer-bottom{flex-direction:column;gap:12px}
}
@media (max-width:639px){
  .page-hero{padding:40px 0 32px}
  .page-title{font-size:29px;line-height:1.28}
  .page-sub{font-size:15px}
  .sec-title{font-size:24px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .btn{width:100%}
  .btn-sm{width:auto}
  .btn-search{width:auto}
  .pager a,.pager span{min-width:40px;height:40px}
  .site-footer{padding-top:56px}
  .footer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .lead-card:hover,.news-card:hover,.update-item:hover,.btn-primary:hover{transform:none}
}