/* roulang page: index */
:root{
  --brand-50:#EEF3FF; --brand-100:#DCE7FF; --brand-500:#3B74F0; --brand-600:#1F5AE0; --brand-700:#1848BC;
  --accent-50:#E6F7F6; --accent-500:#0FA6A0; --accent-700:#0B7C77;
  --warm:#F5A524;
  --ink-900:#0F172A; --ink-700:#1E293B; --ink-600:#475569; --ink-400:#94A3B8;
  --line:#E6EAF2; --divider:#EEF1F6;
  --bg:#F7F9FC; --card:#FFFFFF;
  --radius-card:16px; --radius-btn:10px; --radius-img:14px; --radius-band:20px;
  --shadow-card:0 1px 2px rgba(15,23,42,.04),0 10px 28px -14px rgba(31,90,224,.16);
  --shadow-hover:0 2px 6px rgba(15,23,42,.06),0 18px 40px -18px rgba(31,90,224,.28);
  --shadow-nav:0 1px 0 #E6EAF2,0 8px 24px -20px rgba(15,23,42,.25);
  --container:1200px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px; line-height:1.75; color:var(--ink-900); background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-0.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
input{font:inherit;}
:focus-visible{outline:0;box-shadow:0 0 0 3px rgba(31,90,224,.28);border-radius:8px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:20px;padding-right:20px;}
@media(min-width:1024px){.container{padding-left:32px;padding-right:32px;}}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease,background .22s ease;}
.site-header.is-scrolled{box-shadow:var(--shadow-nav);background:rgba(255,255,255,.94);}
.header-inner{display:flex;align-items:center;height:68px;gap:24px;}
.logo{display:flex;align-items:center;gap:10px;flex:none;}
.logo-mark{width:24px;height:24px;border-radius:8px;background:var(--brand-600);display:grid;place-items:center;flex:none;}
.logo-text{font-size:18px;font-weight:700;letter-spacing:-0.01em;color:var(--ink-900);}
.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{position:relative;display:inline-flex;align-items:center;height:36px;padding:0 12px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--ink-600);transition:color .18s ease,background .18s ease;}
.nav-link:hover{color:var(--brand-700);background:var(--brand-50);}
.nav-link.is-active{color:var(--ink-900);font-weight:600;}
.nav-link.is-active::after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);
  width:20px;height:2px;border-radius:2px;background:var(--brand-600);}
.header-right{margin-left:auto;display:flex;align-items:center;gap:14px;}
.cmd-search{display:flex;align-items:center;gap:8px;width:240px;height:38px;padding:0 10px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-btn);transition:border-color .18s ease,box-shadow .18s ease;}
.cmd-search:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(31,90,224,.18);}
.cmd-search input{border:0;outline:0;flex:1;min-width:0;font-size:14px;color:var(--ink-900);background:transparent;}
.cmd-search input::placeholder{color:var(--ink-400);}
.kbd{font-size:11px;color:var(--ink-400);background:#F1F5F9;border-radius:6px;padding:2px 6px;line-height:1.4;flex:none;}
.quick-link{display:inline-flex;align-items:center;gap:4px;font-size:14px;font-weight:500;color:var(--ink-600);
  transition:color .18s ease;}
.quick-link:hover{color:var(--brand-700);}
.nav-toggle{display:none;width:44px;height:44px;border-radius:var(--radius-btn);border:1px solid var(--line);
  background:#fff;flex-direction:column;justify-content:center;align-items:center;gap:5px;}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:46px;padding:0 20px;
  border-radius:var(--radius-btn);font-size:15px;font-weight:600;white-space:nowrap;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-card);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(0);background:var(--brand-700);}
.btn-secondary{background:#fff;color:var(--brand-700);border:1px solid var(--brand-100);}
.btn-secondary:hover{background:var(--brand-50);border-color:var(--brand-500);transform:translateY(-1px);}
.btn-secondary:active{transform:translateY(0);}
.btn-white{background:#fff;color:var(--brand-700);}
.btn-white:hover{background:var(--brand-50);transform:translateY(-1px);}
.btn-text{display:inline-flex;align-items:center;gap:4px;font-size:14px;font-weight:600;color:var(--brand-600);
  text-decoration:underline;text-underline-offset:4px;text-decoration-color:rgba(31,90,224,.35);
  transition:color .18s ease,text-decoration-color .18s ease;}
.btn-text:hover{color:var(--brand-700);text-decoration-color:var(--brand-700);}

/* ============ 徽章 ============ */
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  font-size:13px;font-weight:500;line-height:1.5;white-space:nowrap;}
.badge-brand{background:var(--brand-50);color:var(--brand-700);}
.badge-accent{background:var(--accent-50);color:var(--accent-700);}
.badge-neutral{background:#F1F5F9;color:var(--ink-600);}

/* ============ 移动抽屉 ============ */
.drawer-mask{position:fixed;inset:0;background:rgba(15,23,42,.4);z-index:70;opacity:0;visibility:hidden;
  transition:opacity .28s ease,visibility .28s ease;}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{position:fixed;top:0;right:0;height:100%;width:min(86vw,340px);background:#fff;z-index:80;
  transform:translateX(100%);transition:transform .28s ease;padding:20px;overflow-y:auto;}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);font-size:20px;line-height:1;
  color:var(--ink-600);display:grid;place-items:center;}
.drawer-close:hover{background:var(--brand-50);color:var(--brand-700);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:24px;}
.drawer-link{display:block;padding:12px 14px;border-radius:10px;font-size:16px;font-weight:500;color:var(--ink-600);}
.drawer-link:hover{background:var(--brand-50);color:var(--brand-700);}
.drawer-link.is-active{background:var(--brand-50);color:var(--brand-700);font-weight:600;}
.drawer-cta{width:100%;margin-top:16px;}

/* ============ Hero ============ */
.hero{padding:56px 0 64px;background:linear-gradient(180deg,#EEF3FF 0%,rgba(255,255,255,0) 62%),var(--bg);}
.hero-grid{display:grid;grid-template-columns:1fr;gap:44px;align-items:center;}
@media(min-width:1024px){.hero-grid{grid-template-columns:1fr 1fr;gap:56px;}.hero{padding:72px 0 96px;}}
.hero h1{font-size:clamp(30px,4.2vw,50px);font-weight:700;margin-top:18px;color:var(--ink-900);}
.hero-sub{font-size:17px;line-height:1.75;color:var(--ink-600);margin-top:18px;max-width:34em;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.trust-row{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:28px;}
.trust-item{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-600);}
.trust-dot{width:22px;height:22px;border-radius:7px;background:var(--brand-50);display:grid;place-items:center;flex:none;}
.hero-media{position:relative;}
.media-box{position:relative;overflow:hidden;border-radius:var(--radius-img);background:var(--brand-50);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32' viewBox='0 0 24 24' fill='none' stroke='%231F5AE0' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='3' width='18' height='18' rx='2'/%3E%3Ccircle cx='8.5' cy='8.5' r='1.5'/%3E%3Cpath d='M21 15l-5-5L5 21'/%3E%3C/svg%3E");
  background-position:center;background-repeat:no-repeat;}
.media-box img{width:100%;height:100%;object-fit:cover;}
.media-box img.is-broken{opacity:0;}
.hero-media .media-box{box-shadow:var(--shadow-card);}
.hero-media .media-box img{aspect-ratio:4/3;}
.hero-float{position:absolute;right:-10px;bottom:-20px;width:232px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:14px 16px;box-shadow:var(--shadow-card);}
.hero-float-num{font-size:24px;font-weight:700;color:var(--brand-700);line-height:1.2;}
.hero-float-label{font-size:13px;color:var(--ink-400);margin-top:4px;}
@media(max-width:639px){
  .hero-float{position:static;width:100%;margin-top:16px;}
}

/* ============ 通用板块 ============ */
.section{padding:48px 0;}
@media(min-width:768px){.section{padding:64px 0;}}
@media(min-width:1024px){.section{padding:88px 0;}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:32px;}
.section-title{font-size:clamp(24px,2.8vw,34px);font-weight:700;color:var(--ink-900);}
.section-sub{font-size:15px;color:var(--ink-600);margin-top:10px;max-width:62ch;}

/* ============ 步骤条 ============ */
.steps{display:grid;grid-template-columns:1fr;gap:24px;}
@media(min-width:768px){.steps{grid-template-columns:repeat(3,1fr);}}
.step{position:relative;background:var(--brand-50);border-radius:14px;padding:24px;
  transition:transform .2s ease,box-shadow .2s ease;}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-card);}
.step-num{width:32px;height:32px;border-radius:50%;background:var(--accent-500);color:#fff;font-size:14px;
  font-weight:700;display:grid;place-items:center;margin-bottom:14px;}
.step h3{font-size:17px;font-weight:600;color:var(--ink-900);}
.step p{font-size:14px;line-height:1.7;color:var(--ink-600);margin-top:8px;}
@media(min-width:768px){
  .step + .step::before{content:"";position:absolute;left:-24px;top:40px;width:24px;
    border-top:1px dashed var(--brand-100);}
}

/* ============ 证据条 ============ */
.evidence{display:grid;grid-template-columns:repeat(2,1fr);background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;}
@media(min-width:768px){.evidence{grid-template-columns:repeat(4,1fr);}}
.evidence-item{padding:26px 18px;text-align:center;border-bottom:1px solid var(--divider);}
.evidence-item:nth-child(even){border-left:1px solid var(--divider);}
.evidence-item:nth-child(3),.evidence-item:nth-child(4){border-bottom:0;}
@media(min-width:768px){
  .evidence-item{border-bottom:0;border-left:1px solid var(--divider);}
  .evidence-item:first-child{border-left:0;}
}
.evidence-num{font-size:28px;font-weight:700;color:var(--brand-700);line-height:1.2;}
.evidence-label{font-size:13px;color:var(--ink-400);margin-top:6px;}

/* ============ 案例图文卡 ============ */
.case-grid{display:grid;grid-template-columns:1fr;gap:24px;margin-top:24px;}
@media(min-width:768px){.case-grid{grid-template-columns:repeat(2,1fr);}}
.case-card{display:grid;grid-template-columns:1fr;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.case-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--brand-100);}
@media(min-width:640px){.case-card{grid-template-columns:40% 1fr;}}
.case-card .media-box{border-radius:0;}
.case-card .media-box img{min-height:190px;}
.case-body{padding:24px;display:flex;flex-direction:column;gap:10px;}
.case-body h3{font-size:18px;font-weight:600;line-height:1.5;}
.case-body p{font-size:14px;line-height:1.7;color:var(--ink-600);}
.case-body .btn-text{margin-top:auto;padding-top:6px;}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media(min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(4,1fr);}}
.news-card{display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--brand-100);}
.news-cover{aspect-ratio:16/10;overflow:hidden;background:var(--brand-50);}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-cover img{transform:scale(1.04);}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-title{font-size:18px;font-weight:600;line-height:1.5;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-summary{font-size:14px;line-height:1.7;color:var(--ink-600);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;padding-top:6px;font-size:13px;color:var(--ink-400);display:flex;align-items:center;gap:8px;}
.news-meta .sep{width:3px;height:3px;border-radius:50%;background:var(--ink-400);display:inline-block;}
.empty-state{padding:56px 24px;text-align:center;background:#fff;border:1px dashed var(--line);border-radius:var(--radius-card);}
.empty-icon{width:48px;height:48px;margin:0 auto 14px;border-radius:14px;background:var(--brand-50);display:grid;place-items:center;}
.empty-text{font-size:16px;color:var(--ink-600);margin-bottom:18px;}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:1024px){.faq-layout{grid-template-columns:34% 1fr;gap:56px;}}
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;}
.faq-item + .faq-item{border-top:1px solid var(--divider);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 24px;font-size:17px;font-weight:600;color:var(--ink-900);text-align:left;
  transition:background .18s ease;}
.faq-q:hover{background:#FAFBFE;}
.faq-icon{position:relative;width:20px;height:20px;flex:none;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-600);border-radius:2px;
  transition:transform .24s ease;}
.faq-icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;}
.faq-item.open .faq-icon::after{transform:rotate(90deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
.faq-a-inner{padding:0 24px 20px;font-size:15px;line-height:1.8;color:var(--ink-600);}

/* ============ CTA 通栏 ============ */
.cta-band{border-radius:var(--radius-band);padding:40px 28px;display:flex;flex-direction:column;gap:24px;
  background-image:linear-gradient(100deg,rgba(31,90,224,.96),rgba(24,72,188,.94)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;}
@media(min-width:768px){
  .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:48px 56px;gap:40px;}
}
.cta-band h2{color:#fff;font-size:clamp(24px,2.8vw,34px);font-weight:700;}
.cta-band p{color:rgba(255,255,255,.84);font-size:15px;margin-top:10px;max-width:56ch;}
@media(max-width:767px){.cta-band{align-items:center;text-align:center;}}

/* ============ SEO 矮区块 ============ */
.seo-note{padding:32px 0 40px;}
.seo-note p{font-size:14px;line-height:1.8;color:var(--ink-400);}

/* ============ 页脚 ============ */
.site-footer{background:#fff;border-top:1px solid var(--line);padding-top:56px;margin-top:8px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;}}
.footer-brand-text{font-size:14px;color:var(--ink-600);margin-top:14px;max-width:32ch;line-height:1.8;}
.footer-title{font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:12px;}
.footer-link{display:block;font-size:14px;color:var(--ink-600);padding:5px 0;transition:color .18s ease,transform .18s ease;}
.footer-link:hover{color:var(--brand-700);transform:translateX(2px);}
.footer-bottom{margin-top:40px;border-top:1px solid var(--divider);padding:20px 0 28px;
  font-size:12px;color:var(--ink-400);display:flex;flex-wrap:wrap;gap:8px 16px;justify-content:space-between;}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease-out,transform .4s ease-out;}
.reveal.is-visible{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation:none !important;transition:none !important;}
}
@media(max-width:1023px){
  .main-nav,.cmd-search,.quick-link{display:none;}
  .nav-toggle{display:flex;}
}

/* roulang page: article */
:root{
    --brand-600:#1F5AE0;
    --brand-700:#1848BC;
    --brand-500:#3B74F0;
    --brand-50:#EEF3FF;
    --brand-100:#DCE7FF;
    --accent:#0FA6A0;
    --accent-50:#E6F7F6;
    --accent-700:#0B7C77;
    --warm:#F5A524;
    --text:#0F172A;
    --text-2:#475569;
    --text-3:#94A3B8;
    --border:#E6EAF2;
    --line:#EEF1F6;
    --bg:#F7F9FC;
    --card:#FFFFFF;
    --radius-card:16px;
    --radius-btn:10px;
    --radius-img:14px;
    --shadow-card:0 1px 2px rgba(15,23,42,.04), 0 10px 28px -14px rgba(31,90,224,.16);
    --shadow-hover:0 2px 6px rgba(15,23,42,.06), 0 18px 40px -18px rgba(31,90,224,.28);
    --shadow-nav:0 1px 0 #E6EAF2, 0 8px 24px -20px rgba(15,23,42,.25);
    --container:1200px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;scroll-padding-top:96px}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.75;
    color:var(--text);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none}
  img{max-width:100%;display:block}
  button{font:inherit;color:inherit}
  :focus-visible{outline:3px solid rgba(31,90,224,.28);outline-offset:2px;border-radius:6px}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
  @media (min-width:768px){.container{padding:0 32px}}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;background:#fff;
    border-bottom:1px solid var(--border);
    box-shadow:var(--shadow-nav);
    transition:background .2s ease, box-shadow .2s ease;
  }
  .site-header.is-scrolled{background:rgba(255,255,255,.95);box-shadow:0 1px 0 var(--border),0 10px 26px -20px rgba(15,23,42,.35)}
  .header-inner{display:flex;align-items:center;gap:20px;height:68px}
  .logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.01em}
  .logo-mark{
    width:24px;height:24px;border-radius:8px;background:var(--brand-600);
    display:inline-flex;align-items:center;justify-content:center;flex:none;
  }
  .logo-text{font-size:18px;color:var(--text);white-space:nowrap}
  .main-nav{display:none;align-items:center;gap:2px;margin-left:6px}
  @media (min-width:1024px){.main-nav{display:flex}}
  .nav-link{
    position:relative;display:inline-block;padding:8px 12px;font-size:15px;font-weight:500;
    color:var(--text-2);border-radius:8px;transition:color .18s ease,background .18s ease;
  }
  .nav-link:hover{color:var(--brand-700);background:var(--brand-50)}
  .nav-link.is-active{color:var(--text)}
  .nav-link.is-active::after{
    content:"";position:absolute;left:12px;width:20px;bottom:2px;height:2px;
    border-radius:2px;background:var(--brand-600);
  }
  .header-right{margin-left:auto;display:flex;align-items:center;gap:10px}
  .cmd-search{
    display:none;align-items:center;gap:8px;height:38px;width:240px;
    padding:0 10px 0 12px;background:#fff;border:1px solid var(--border);border-radius:10px;
    transition:border-color .18s ease,box-shadow .18s ease;
  }
  @media (min-width:1200px){.cmd-search{display:flex}}
  .cmd-search:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(31,90,224,.14)}
  .cmd-search input{border:0;outline:0;background:transparent;font-size:14px;width:100%;color:var(--text)}
  .cmd-search input::placeholder{color:var(--text-3)}
  .kbd{font-size:11px;color:var(--text-2);background:#F1F5F9;border-radius:6px;padding:2px 6px;white-space:nowrap}
  .quick-link{
    display:none;align-items:center;gap:4px;font-size:14px;font-weight:500;color:var(--text-2);
    padding:8px 10px;border-radius:8px;transition:color .18s ease,background .18s ease;
  }
  @media (min-width:1024px){.quick-link{display:inline-flex}}
  .quick-link:hover{color:var(--brand-700);background:var(--brand-50)}
  .nav-toggle{
    width:44px;height:44px;border:1px solid var(--border);border-radius:10px;background:#fff;
    display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
    transition:border-color .18s ease,background .18s ease;
  }
  .nav-toggle:hover{border-color:var(--brand-100);background:var(--brand-50)}
  .nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-2)}
  @media (min-width:1024px){.nav-toggle{display:none}}

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;
    border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;
    cursor:pointer;transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  }
  .btn-sm{height:40px;padding:0 18px;font-size:14px}
  .btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-card)}
  .btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:var(--shadow-hover)}
  .btn-primary:active{transform:translateY(0)}
  .btn-secondary{background:#fff;color:var(--brand-700);border-color:var(--brand-100)}
  .btn-secondary:hover{background:var(--brand-50);transform:translateY(-1px)}
  .btn-white{background:#fff;color:var(--brand-700);box-shadow:var(--shadow-card)}
  .btn-white:hover{background:#F2F6FF;transform:translateY(-1px)}
  .btn-text{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);
    text-decoration:underline;text-underline-offset:4px;transition:color .18s ease;
  }
  .btn-text:hover{color:var(--brand-700)}

  /* ---------- Badges ---------- */
  .badge{
    display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:999px;
    font-size:12px;font-weight:500;line-height:1;white-space:nowrap;
  }
  .badge-brand{background:var(--brand-50);color:var(--brand-700)}
  .badge-accent{background:var(--accent-50);color:var(--accent-700)}
  .badge-muted{background:#F1F5F9;color:var(--text-2)}

  /* ---------- Mobile drawer ---------- */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(15,23,42,.4);opacity:0;pointer-events:none;
    transition:opacity .28s ease;z-index:70;
  }
  .drawer-mask.is-open{opacity:1;pointer-events:auto}
  .mobile-drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);background:#fff;z-index:80;
    padding:20px;display:flex;flex-direction:column;gap:18px;overflow-y:auto;
    box-shadow:-12px 0 34px -20px rgba(15,23,42,.45);
    transform:translateX(105%);transition:transform .28s ease;
  }
  .mobile-drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between}
  .drawer-close{
    width:40px;height:40px;border-radius:10px;border:1px solid var(--border);background:#fff;
    font-size:20px;line-height:1;cursor:pointer;color:var(--text-2)
  }
  .drawer-close:hover{background:var(--brand-50);color:var(--brand-700)}
  .drawer-nav{display:flex;flex-direction:column;gap:2px}
  .drawer-nav a{padding:12px;border-radius:10px;font-size:15px;font-weight:500;color:var(--text-2);transition:background .18s ease,color .18s ease}
  .drawer-nav a:hover{background:var(--brand-50);color:var(--brand-700)}
  .drawer-search input{
    width:100%;height:46px;border:1px solid var(--border);border-radius:10px;
    padding:0 14px;font-size:14px;outline:none;background:#fff;color:var(--text);
  }
  .drawer-search input:focus{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(31,90,224,.18)}

  /* ---------- Article head ---------- */
  .article-hero{padding:26px 0 6px}
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:6px;
    font-size:13px;line-height:28px;color:var(--text-3);
  }
  .breadcrumb a{color:var(--text-3);transition:color .18s ease}
  .breadcrumb a:hover{color:var(--brand-700)}
  .breadcrumb .sep{color:#CBD5E1}
  .breadcrumb .current{color:var(--brand-700)}
  .article-head{margin-top:12px;max-width:880px}
  .article-title{
    font-size:clamp(28px,3.6vw,42px);line-height:1.3;font-weight:700;letter-spacing:-.01em;
    margin:16px 0 0;color:var(--text);
  }
  .article-meta{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;
    font-size:13px;color:var(--text-3);
  }
  .meta-dot{width:3px;height:3px;border-radius:50%;background:#CBD5E1}

  /* ---------- Article body ---------- */
  .article-section{padding:32px 0 8px}
  .article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px}
  @media (min-width:1280px){
    .article-layout{grid-template-columns:minmax(0,820px) 200px;justify-content:center;gap:40px}
  }
  .article-card{
    width:100%;max-width:820px;margin:0 auto;background:var(--card);
    border:1px solid var(--border);border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);padding:20px;
  }
  @media (min-width:768px){.article-card{padding:40px}}
  @media (min-width:1280px){.article-card{margin:0}}

  .article-body{font-size:17px;line-height:1.85;color:#1E293B;max-width:76ch}
  .article-body p{margin:0 0 1.2em}
  .article-body h2{
    position:relative;font-size:24px;line-height:1.4;font-weight:700;color:var(--text);
    margin:40px 0 16px;padding-left:14px;
  }
  .article-body h2::before{
    content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;border-radius:2px;background:var(--brand-600);
  }
  .article-body h3{font-size:20px;font-weight:600;margin:28px 0 12px;color:var(--text);line-height:1.5}
  .article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;color:var(--text)}
  .article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.3em}
  .article-body ul{list-style:none;padding-left:1.2em}
  .article-body ul li{position:relative;line-height:1.9;margin-bottom:.35em}
  .article-body ul li::before{
    content:"";position:absolute;left:-1.05em;top:.82em;width:6px;height:6px;border-radius:50%;background:var(--brand-500);
  }
  .article-body ol li{line-height:1.9;margin-bottom:.45em}
  .article-body blockquote{
    margin:24px 0;padding:16px 18px;background:var(--brand-50);
    border-left:3px solid var(--brand-600);border-radius:0 12px 12px 0;
    color:var(--text-2);font-size:15px;font-style:italic;
  }
  .article-body blockquote p:last-child{margin-bottom:0}
  .article-body img{border-radius:var(--radius-img);margin:24px auto;height:auto}
  .article-body figure{margin:24px 0}
  .article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:12px}
  .article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
  .article-body a:hover{color:var(--brand-700)}
  .article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
  .article-body th{background:var(--brand-50);text-align:left;font-weight:600;padding:12px 14px;color:var(--brand-700)}
  .article-body td{padding:12px 14px;border-top:1px solid var(--line);color:var(--text-2)}
  .article-body tbody tr:nth-child(even){background:#F8FAFC}
  .article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}

  .article-empty{padding:48px 16px;text-align:center}
  .article-empty svg{color:var(--brand-500);margin:0 auto 16px}
  .article-empty p{font-size:16px;color:var(--text-2);margin:0 0 20px}

  /* ---------- Toc ---------- */
  .article-toc{display:none}
  @media (min-width:1280px){
    .article-toc{display:block;position:sticky;top:100px;align-self:start}
  }
  .toc-title{font-size:13px;font-weight:600;color:var(--text-2);margin:0 0 12px;letter-spacing:.02em}
  .toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
  .toc-link{
    display:block;font-size:13px;line-height:1.5;color:var(--text-3);
    padding:6px 0 6px 10px;border-left:2px solid transparent;
    transition:color .18s ease,border-color .18s ease,background .18s ease;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .toc-link:hover{color:var(--brand-700)}
  .toc-link.is-current{color:var(--brand-600);border-left-color:var(--brand-600);font-weight:600}

  /* ---------- Sections & cards ---------- */
  .section{padding:56px 0}
  @media (min-width:1024px){.section{padding:88px 0}}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
  .section-title{font-size:clamp(22px,2.4vw,30px);font-weight:700;margin:0;line-height:1.3}
  .section-sub{font-size:14px;color:var(--text-2);margin:10px 0 0;max-width:64ch}
  .card-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:768px){.card-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr)}}
  .post-card{
    display:flex;flex-direction:column;background:var(--card);border:1px solid var(--border);
    border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--brand-100)}
  .post-cover{aspect-ratio:16/10;overflow:hidden;background:var(--brand-50)}
  .post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
  .post-card:hover .post-cover img{transform:scale(1.03)}
  .post-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
  .post-title{
    font-size:18px;font-weight:600;line-height:1.5;margin:0;color:var(--text);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .post-excerpt{
    font-size:14px;line-height:1.7;color:var(--text-2);margin:0;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .post-meta{margin-top:auto;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}

  /* ---------- Article footer nav ---------- */
  .article-foot{
    max-width:820px;margin:28px auto 0;background:var(--card);border:1px solid var(--border);
    border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:20px;
    display:flex;flex-direction:column;gap:16px;
  }
  @media (min-width:768px){
    .article-foot{flex-direction:row;align-items:center;justify-content:space-between;padding:22px 28px}
  }
  .foot-links{display:flex;flex-wrap:wrap;gap:18px}
  .foot-link{font-size:14px;color:var(--text-2);display:inline-flex;align-items:center;gap:6px;transition:color .18s ease}
  .foot-link:hover{color:var(--brand-700)}

  /* ---------- CTA ---------- */
  .cta-band{
    border-radius:20px;padding:32px 24px;
    background:linear-gradient(100deg,#1F5AE0,#1848BC);
    box-shadow:var(--shadow-hover);
    display:flex;flex-direction:column;gap:20px;align-items:flex-start;
  }
  @media (min-width:1024px){
    .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:44px 48px}
  }
  .cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px);font-weight:700;margin:0 0 10px;line-height:1.3}
  .cta-band p{color:rgba(255,255,255,.86);margin:0;font-size:15px;max-width:60ch}

  /* ---------- Footer ---------- */
  .site-footer{background:#fff;border-top:1px solid var(--border);margin-top:56px}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:48px 0 36px}
  @media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}}
  .footer-brand-text{font-size:14px;color:var(--text-2);margin:14px 0 0;max-width:34ch;line-height:1.7}
  .footer-title{font-size:14px;font-weight:600;margin:0 0 12px;color:var(--text)}
  .footer-link{display:block;font-size:14px;color:var(--text-2);padding:5px 0;transition:color .18s ease,transform .18s ease}
  .footer-link:hover{color:var(--brand-700);transform:translateX(2px)}
  .footer-bottom{
    border-top:1px solid var(--line);padding:18px 0;display:flex;flex-wrap:wrap;gap:10px;
    justify-content:space-between;font-size:12px;color:var(--text-3);
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  }

/* roulang page: category1 */
:root{
    --brand-600:#1F5AE0;
    --brand-700:#1848BC;
    --brand-500:#3B74F0;
    --brand-50:#EEF3FF;
    --brand-100:#DCE7FF;
    --accent:#0FA6A0;
    --accent-50:#E6F7F6;
    --accent-700:#0B7C77;
    --warm:#F5A524;
    --ink-900:#0F172A;
    --ink-600:#475569;
    --ink-400:#94A3B8;
    --line:#E6EAF2;
    --line-soft:#EEF1F6;
    --page:#F7F9FC;
    --white:#FFFFFF;
    --r-card:16px;
    --r-btn:10px;
    --r-img:14px;
    --shadow-card:0 1px 2px rgba(15,23,42,.04), 0 10px 28px -14px rgba(31,90,224,.16);
    --shadow-hover:0 2px 6px rgba(15,23,42,.06), 0 18px 40px -18px rgba(31,90,224,.28);
    --shadow-nav:0 1px 0 #E6EAF2, 0 8px 24px -20px rgba(15,23,42,.25);
    --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.75;
    color:var(--ink-900);
    background:var(--page);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border:0;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul{list-style:none;padding:0;}
  :focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,90,224,.28);border-radius:6px;}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:32px;
    padding-right:32px;
  }
  .sec{padding-top:88px;padding-bottom:88px;}
  .sec-tight{padding-top:64px;padding-bottom:64px;}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:var(--white);
    border-bottom:1px solid var(--line);
    transition:box-shadow .22s ease,background-color .22s ease;
  }
  .site-header.is-scrolled{
    background:rgba(255,255,255,.95);
    box-shadow:0 8px 24px -20px rgba(15,23,42,.25);
  }
  .header-inner{
    display:flex;
    align-items:center;
    gap:18px;
    height:68px;
  }
  .logo{
    display:inline-flex;
    align-items:center;
    gap:10px;
    flex:0 0 auto;
  }
  .logo-mark{
    width:30px;height:30px;
    border-radius:9px;
    background:var(--brand-600);
    display:grid;place-items:center;
    box-shadow:0 6px 14px -8px rgba(31,90,224,.85);
  }
  .logo-text{
    font-size:19px;
    font-weight:700;
    letter-spacing:-.01em;
    color:var(--ink-900);
    white-space:nowrap;
  }
  .main-nav{
    display:flex;
    align-items:center;
    gap:4px;
    margin-left:10px;
  }
  .nav-link{
    position:relative;
    display:inline-flex;
    align-items:center;
    height:38px;
    padding:0 12px;
    border-radius:8px;
    font-size:15px;
    font-weight:500;
    color:var(--ink-600);
    transition:color .18s ease,background-color .18s ease;
  }
  .nav-link:hover{color:var(--brand-700);background:var(--brand-50);}
  .nav-link.is-active{color:var(--brand-700);}
  .nav-link.is-active::after{
    content:"";
    position:absolute;
    left:12px;
    bottom:1px;
    width:20px;
    height:2px;
    border-radius:2px;
    background:var(--brand-600);
  }
  .header-right{
    display:flex;
    align-items:center;
    gap:12px;
    margin-left:auto;
  }
  .cmd-search{
    display:flex;
    align-items:center;
    gap:8px;
    width:238px;
    height:40px;
    padding:0 12px;
    background:var(--white);
    border:1px solid var(--line);
    border-radius:10px;
    transition:border-color .18s ease,box-shadow .18s ease;
  }
  .cmd-search:focus-within{
    border-color:var(--brand-600);
    box-shadow:0 0 0 3px rgba(31,90,224,.18);
  }
  .cmd-search input{
    flex:1 1 auto;
    width:100%;
    min-width:0;
    border:0;
    outline:none;
    background:transparent;
    font-size:14px;
    color:var(--ink-900);
    font-family:inherit;
  }
  .cmd-search input::placeholder{color:var(--ink-400);}
  .kbd{
    flex:0 0 auto;
    font-size:11px;
    line-height:1;
    padding:4px 6px;
    border-radius:5px;
    background:#F1F5F9;
    color:var(--ink-400);
  }
  .quick-link{
    display:inline-flex;
    align-items:center;
    gap:5px;
    font-size:14px;
    font-weight:500;
    color:var(--ink-600);
    transition:color .18s ease;
  }
  .quick-link:hover{color:var(--brand-700);}

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:44px;
    padding:0 20px;
    border-radius:var(--r-btn);
    border:1px solid transparent;
    font-size:15px;
    font-weight:600;
    line-height:1;
    cursor:pointer;
    white-space:nowrap;
    transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  }
  .btn-sm{height:40px;padding:0 18px;font-size:14px;}
  .btn-primary{
    background:var(--brand-600);
    color:#fff;
    box-shadow:var(--shadow-card);
  }
  .btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-secondary{
    background:#fff;
    border-color:var(--brand-100);
    color:var(--brand-700);
  }
  .btn-secondary:hover{background:var(--brand-50);transform:translateY(-1px);}
  .btn-light{
    background:#fff;
    color:var(--brand-700);
    box-shadow:0 10px 26px -16px rgba(15,23,42,.55);
  }
  .btn-light:hover{background:#F2F6FF;transform:translateY(-1px);}
  .btn-block{width:100%;}

  .nav-toggle{
    display:none;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    gap:5px;
    width:44px;height:44px;
    border:1px solid var(--line);
    border-radius:10px;
    background:#fff;
    cursor:pointer;
  }
  .nav-toggle span{
    display:block;
    width:18px;height:2px;
    border-radius:2px;
    background:var(--ink-900);
    transition:transform .2s ease,opacity .2s ease;
  }

  /* ---------- mobile drawer ---------- */
  .nav-mask{
    position:fixed;
    inset:0;
    background:rgba(15,23,42,.4);
    opacity:0;
    pointer-events:none;
    transition:opacity .3s ease;
    z-index:85;
  }
  .mobile-drawer{
    position:fixed;
    top:0;right:0;
    width:304px;
    max-width:86vw;
    height:100%;
    background:#fff;
    z-index:90;
    padding:20px;
    display:flex;
    flex-direction:column;
    gap:18px;
    transform:translateX(102%);
    transition:transform .3s ease;
    box-shadow:-24px 0 48px -32px rgba(15,23,42,.5);
    overflow-y:auto;
  }
  body.drawer-open .mobile-drawer{transform:translateX(0);}
  body.drawer-open .nav-mask{opacity:1;pointer-events:auto;}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;}
  .drawer-close{
    width:40px;height:40px;
    display:grid;place-items:center;
    border:1px solid var(--line);
    border-radius:10px;
    background:#fff;
    font-size:20px;
    line-height:1;
    color:var(--ink-600);
    cursor:pointer;
  }
  .drawer-close:hover{background:var(--brand-50);color:var(--brand-700);}
  .drawer-nav{display:flex;flex-direction:column;gap:4px;}
  .drawer-link{
    display:flex;
    align-items:center;
    height:46px;
    padding:0 14px;
    border-radius:10px;
    font-size:15px;
    font-weight:500;
    color:var(--ink-600);
    transition:background-color .18s ease,color .18s ease;
  }
  .drawer-link:hover{background:var(--brand-50);color:var(--brand-700);}
  .drawer-link.is-active{background:var(--brand-50);color:var(--brand-700);}
  .drawer-search{
    display:flex;align-items:center;gap:8px;
    height:44px;padding:0 12px;
    border:1px solid var(--line);
    border-radius:10px;
    background:#fff;
  }
  .drawer-search input{
    width:100%;border:0;outline:none;background:transparent;font-size:14px;font-family:inherit;
  }

  /* ---------- shared bits ---------- */
  .breadcrumb{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:8px;
    font-size:13px;
    line-height:28px;
    color:var(--ink-400);
    margin-bottom:12px;
  }
  .breadcrumb a{color:var(--ink-400);transition:color .18s ease;}
  .breadcrumb a:hover{color:var(--brand-700);}
  .breadcrumb .sep{color:#CBD5E1;}
  .breadcrumb .current{color:var(--brand-700);font-weight:500;}

  .hero-title{
    font-size:clamp(30px,4.2vw,50px);
    line-height:1.3;
    font-weight:700;
    letter-spacing:-.01em;
    color:var(--ink-900);
  }
  .sec-title{
    font-size:clamp(24px,2.8vw,34px);
    line-height:1.3;
    font-weight:700;
    letter-spacing:-.01em;
  }
  .sec-sub{
    font-size:15px;
    line-height:1.8;
    color:var(--ink-600);
  }
  .lead{
    font-size:17px;
    line-height:1.85;
    color:var(--ink-600);
    max-width:64ch;
  }

  .badge-pill{
    display:inline-flex;
    align-items:center;
    gap:7px;
    padding:6px 14px;
    border-radius:999px;
    background:var(--brand-50);
    color:var(--brand-700);
    font-size:13px;
    font-weight:500;
    letter-spacing:.01em;
  }
  .badge-pill .dot{
    width:6px;height:6px;border-radius:50%;background:var(--accent);
  }
  .tag{
    display:inline-flex;
    align-items:center;
    padding:4px 11px;
    border-radius:999px;
    font-size:12px;
    font-weight:500;
    background:var(--accent-50);
    color:var(--accent-700);
  }
  .tag-neutral{
    background:#F1F5F9;
    color:var(--ink-600);
  }

  .card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--shadow-card);
    transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  }
  .card-hover:hover{
    box-shadow:var(--shadow-hover);
    transform:translateY(-3px);
    border-color:var(--brand-100);
  }

  .text-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    color:var(--brand-600);
    font-size:14px;
    font-weight:600;
    transition:color .18s ease,gap .18s ease;
  }
  .text-link:hover{color:var(--brand-700);gap:9px;}

  /* ---------- media ---------- */
  .media{
    position:relative;
    overflow:hidden;
    border-radius:var(--r-img);
    background:var(--brand-50);
  }
  .media > .ph{
    position:absolute;
    inset:0;
    display:grid;
    place-items:center;
    color:var(--brand-500);
    opacity:.6;
  }
  .media > img{
    position:absolute;
    inset:0;
    width:100%;
    height:100%;
    object-fit:cover;
  }

  /* ---------- hero ---------- */
  .hero-wrap{
    background:linear-gradient(180deg,#F2F6FF 0%,#FFFFFF 100%);
    border-bottom:1px solid var(--line-soft);
    padding-top:44px;
    padding-bottom:72px;
  }
  .hero-media{aspect-ratio:16/11;border-radius:var(--r-img);box-shadow:var(--shadow-card);}
  .hero-float{
    position:absolute;
    right:16px;
    bottom:16px;
    width:222px;
    background:#fff;
    border-radius:14px;
    padding:13px 15px;
    box-shadow:0 12px 30px -18px rgba(15,23,42,.5);
    z-index:2;
  }
  .hero-float .num{
    font-size:22px;
    font-weight:700;
    color:var(--brand-700);
    line-height:1.2;
  }
  .hero-float .cap{
    font-size:12px;
    color:var(--ink-400);
    line-height:1.6;
    margin-top:2px;
  }
  .trust-row{
    display:flex;
    flex-wrap:wrap;
    gap:10px 22px;
    margin-top:26px;
  }
  .trust-item{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    font-weight:500;
    color:var(--ink-600);
  }
  .trust-item svg{color:var(--accent);flex:0 0 auto;}

  /* ---------- flow list ---------- */
  .flow-row{
    display:grid;
    grid-template-columns:240px 1fr;
    gap:24px;
    padding:24px;
    align-items:stretch;
  }
  .flow-thumb{height:158px;}
  .flow-body{display:flex;flex-direction:column;}
  .flow-body h3{
    font-size:19px;
    font-weight:600;
    line-height:1.5;
    margin:10px 0 8px;
  }
  .flow-body p{
    font-size:14px;
    line-height:1.8;
    color:var(--ink-600);
    max-width:62ch;
  }
  .flow-tags{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    margin:14px 0 14px;
  }
  .flow-foot{
    margin-top:auto;
    padding-top:14px;
    border-top:1px solid var(--line-soft);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:14px;
  }
  .flow-meta{font-size:13px;color:var(--ink-400);}

  /* ---------- evidence bar ---------- */
  .evidence{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    padding:6px 0;
  }
  .evidence-cell{
    padding:22px 24px;
    border-left:1px solid var(--line-soft);
  }
  .evidence-cell:first-child{border-left:0;}
  .evidence-num{
    font-size:28px;
    font-weight:700;
    color:var(--brand-700);
    line-height:1.2;
  }
  .evidence-cap{
    font-size:13px;
    color:var(--ink-400);
    margin-top:6px;
  }

  /* ---------- steps ---------- */
  .step-block{
    background:var(--brand-50);
    border-radius:14px;
    padding:22px 22px 24px;
    height:100%;
    position:relative;
    transition:background-color .2s ease;
  }
  .step-block:hover{background:#E6EEFF;}
  .step-index{
    width:32px;height:32px;
    border-radius:50%;
    background:var(--accent);
    color:#fff;
    font-size:14px;
    font-weight:700;
    display:grid;place-items:center;
    margin-bottom:14px;
  }
  .step-block h3{font-size:17px;font-weight:600;margin-bottom:8px;}
  .step-block p{font-size:14px;line-height:1.7;color:var(--ink-600);}

  /* ---------- scene cards ---------- */
  .scene-card{padding:20px;display:flex;flex-direction:column;height:100%;}
  .scene-cover{aspect-ratio:16/10;margin-bottom:16px;}
  .scene-card h3{font-size:18px;font-weight:600;margin-bottom:8px;}
  .scene-card p{font-size:14px;line-height:1.8;color:var(--ink-600);}

  /* ---------- faq ---------- */
  .faq-list{overflow:hidden;}
  .faq-item + .faq-item{border-top:1px solid var(--line-soft);}
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    padding:20px 24px;
    background:transparent;
    border:0;
    text-align:left;
    font-size:17px;
    font-weight:600;
    color:var(--ink-900);
    cursor:pointer;
    transition:background-color .18s ease,color .18s ease;
  }
  .faq-q:hover{background:var(--brand-50);color:var(--brand-700);}
  .faq-icon{
    position:relative;
    flex:0 0 auto;
    width:20px;height:20px;
    transition:transform .24s ease;
  }
  .faq-icon::before,
  .faq-icon::after{
    content:"";
    position:absolute;
    top:50%;left:50%;
    width:14px;height:2px;
    border-radius:2px;
    background:var(--brand-600);
    transform:translate(-50%,-50%);
  }
  .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);}
  .faq-item.is-open .faq-icon{transform:rotate(45deg);}
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height .24s ease;
  }
  .faq-a p{
    padding:0 24px 22px;
    font-size:15px;
    line-height:1.8;
    color:var(--ink-600);
    max-width:70ch;
  }

  /* ---------- note block ---------- */
  .note-block{
    background:var(--brand-50);
    border-radius:16px;
    padding:34px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:28px;
  }
  .note-block h3{font-size:20px;font-weight:600;margin-bottom:10px;}
  .note-block p{font-size:15px;line-height:1.8;color:var(--ink-600);max-width:62ch;}

  /* ---------- cta ---------- */
  .cta-banner{
    border-radius:20px;
    background:linear-gradient(100deg,#1F5AE0 0%,#1848BC 100%);
    padding:44px 46px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:32px;
    box-shadow:0 24px 56px -32px rgba(24,72,188,.75);
  }
  .cta-banner h2{
    color:#fff;
    font-size:clamp(22px,2.4vw,30px);
    font-weight:700;
    line-height:1.35;
  }
  .cta-banner p{
    color:rgba(255,255,255,.86);
    font-size:15px;
    line-height:1.8;
    margin-top:10px;
    max-width:52ch;
  }

  /* ---------- footer ---------- */
  .site-footer{
    background:#fff;
    border-top:1px solid var(--line);
    padding-top:64px;
    margin-top:8px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1fr;
    gap:36px;
    padding-bottom:44px;
  }
  .footer-brand-text{
    font-size:14px;
    line-height:1.8;
    color:var(--ink-600);
    margin-top:14px;
    max-width:34ch;
  }
  .footer-title{
    font-size:14px;
    font-weight:600;
    color:var(--ink-900);
    margin-bottom:14px;
  }
  .footer-link{
    display:block;
    font-size:14px;
    line-height:1.6;
    color:var(--ink-600);
    padding:6px 0;
    transition:color .18s ease,transform .18s ease;
  }
  .footer-link:hover{color:var(--brand-700);transform:translateX(-2px);}
  .footer-bottom{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:14px;
    flex-wrap:wrap;
    border-top:1px solid var(--line-soft);
    padding:18px 0 26px;
    font-size:12px;
    color:var(--ink-400);
  }

  /* ---------- reveal ---------- */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease-out,transform .4s ease-out;}
  .reveal.is-in{opacity:1;transform:none;}

  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important;}
    .reveal{opacity:1;transform:none;}
    html{scroll-behavior:auto;}
  }

  /* ---------- responsive ---------- */
  @media (max-width:1023px){
    .container{padding-left:24px;padding-right:24px;}
    .sec{padding-top:64px;padding-bottom:64px;}
    .main-nav,.cmd-search,.quick-link,.header-right > .btn{display:none;}
    .nav-toggle{display:flex;}
    .evidence{grid-template-columns:1fr 1fr;}
    .evidence-cell:nth-child(3){border-left:0;}
    .evidence-cell:nth-child(n+3){border-top:1px solid var(--line-soft);}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .cta-banner{flex-direction:column;align-items:flex-start;padding:36px 30px;}
    .note-block{flex-direction:column;align-items:flex-start;padding:28px 24px;}
  }

  @media (max-width:767px){
    .container{padding-left:20px;padding-right:20px;}
    .sec{padding-top:48px;padding-bottom:48px;}
    .sec-tight{padding-top:44px;padding-bottom:44px;}
    .hero-wrap{padding-top:28px;padding-bottom:52px;}
    .flow-row{grid-template-columns:1fr;gap:16px;padding:18px;}
    .flow-thumb{height:auto;aspect-ratio:16/10;}
    .flow-foot{flex-direction:column;align-items:flex-start;gap:10px;}
    .evidence{grid-template-columns:1fr;}
    .evidence-cell{border-left:0;border-top:1px solid var(--line-soft);padding:18px 20px;}
    .evidence-cell:first-child{border-top:0;}
    .faq-q{padding:18px 18px;font-size:16px;}
    .faq-a p{padding:0 18px 18px;}
    .cta-banner{padding:30px 22px;border-radius:18px;}
    .footer-grid{grid-template-columns:1fr;}
    .logo-text{font-size:18px;}
  }

/* roulang page: category2 */
:root{
  --brand-600:#1F5AE0;
  --brand-700:#1848BC;
  --brand-500:#3B74F0;
  --brand-50:#EEF3FF;
  --brand-100:#DCE7FF;
  --accent:#0FA6A0;
  --accent-50:#E6F7F6;
  --accent-700:#0B7C77;
  --warm:#F5A524;
  --ink:#0F172A;
  --ink-2:#475569;
  --ink-3:#94A3B8;
  --line:#E6EAF2;
  --line-2:#EEF1F6;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --r-cta:20px;
  --shadow-card:0 1px 2px rgba(15,23,42,.04), 0 10px 28px -14px rgba(31,90,224,.16);
  --shadow-hover:0 2px 6px rgba(15,23,42,.06), 0 18px 40px -18px rgba(31,90,224,.28);
  --shadow-nav:0 1px 0 #E6EAF2, 0 8px 24px -20px rgba(15,23,42,.25);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul{padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(31,90,224,.28);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
@media(min-width:768px){.container{padding:0 32px;}}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-600);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200;}
.skip-link:focus{left:0;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-nav);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px -20px rgba(15,23,42,.45);}
.header-inner{display:flex;align-items:center;gap:20px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{width:28px;height:28px;border-radius:8px;background:var(--brand-600);display:inline-flex;align-items:center;justify-content:center;box-shadow:0 6px 14px -8px rgba(31,90,224,.9);}
.logo-text{font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--ink);}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:6px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  font-size:15px;font-weight:500;color:var(--ink-2);
  padding:8px 12px;border-radius:8px;transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--brand-700);background:var(--brand-50);}
.nav-link.is-active{color:var(--brand-700);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  bottom:1px;width:20px;height:2px;border-radius:2px;background:var(--brand-600);
}
.header-right{margin-left:auto;display:flex;align-items:center;gap:14px;}
.cmd-search{
  display:flex;align-items:center;gap:8px;height:38px;width:238px;padding:0 10px;
  background:#fff;border:1px solid var(--line);border-radius:10px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.cmd-search:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(31,90,224,.18);}
.cmd-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:14px;color:var(--ink);}
.cmd-search input::placeholder{color:var(--ink-3);}
.cmd-search .kbd{font-size:11px;color:var(--ink-2);background:#F1F5F9;border-radius:6px;padding:2px 6px;line-height:1.4;}
.quick-link{display:inline-flex;align-items:center;gap:4px;font-size:14px;font-weight:500;color:var(--ink-2);transition:color .18s ease;}
.quick-link:hover{color:var(--brand-700);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;
  flex-direction:column;justify-content:center;align-items:center;gap:4px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.drawer-extra{display:none;}
.nav-scrim{position:fixed;inset:0;background:rgba(15,23,42,.4);opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:80;}
.nav-scrim.is-open{opacity:1;pointer-events:auto;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-card);}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:#fff;color:var(--brand-700);border-color:var(--brand-100);}
.btn-secondary:hover{background:var(--brand-50);border-color:var(--brand-500);}
.btn-white{background:#fff;color:var(--brand-700);box-shadow:0 10px 24px -14px rgba(15,23,42,.5);}
.btn-white:hover{transform:translateY(-1px);background:#F8FAFF;}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-size:14px;font-weight:600;background:none;border:0;padding:6px 0;cursor:pointer;text-underline-offset:4px;}
.btn-text:hover{color:var(--brand-700);text-decoration:underline;}

/* ---------- badges ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;font-size:13px;font-weight:500;background:var(--brand-50);color:var(--brand-700);}
.badge-accent{background:var(--accent-50);color:var(--accent-700);}
.badge-muted{background:#F1F5F9;color:var(--ink-2);}
.dot{width:6px;height:6px;border-radius:50%;background:var(--warm);display:inline-block;}

/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);line-height:28px;margin-bottom:12px;flex-wrap:wrap;}
.breadcrumb a{color:var(--ink-3);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .sep{color:#CBD5E1;}
.breadcrumb .current{color:var(--brand-700);font-weight:600;}

/* ---------- hero ---------- */
.page-hero{padding:32px 0 56px;background:linear-gradient(180deg,#FFFFFF 0%,#F7F9FC 100%);}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;align-items:center;}
.hero-title{font-size:clamp(30px,4.2vw,46px);font-weight:700;line-height:1.3;letter-spacing:-.01em;color:var(--ink);margin:16px 0 18px;}
.hero-desc{font-size:17px;color:var(--ink-2);max-width:56ch;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.hero-micro{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;}
.hero-micro span{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--ink-2);}
.hero-micro svg{flex:0 0 auto;color:var(--accent);}
.hero-figure{position:relative;}
.hero-float{
  position:absolute;right:16px;bottom:16px;width:222px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:14px 16px;box-shadow:var(--shadow-card);
}
.hero-float .hf-num{display:block;font-size:24px;font-weight:700;color:var(--brand-700);line-height:1.2;}
.hero-float .hf-txt{display:block;font-size:12px;color:var(--ink-2);margin-top:4px;line-height:1.6;}

/* ---------- media ---------- */
.media{position:relative;background:var(--brand-50);border-radius:var(--r-img);overflow:hidden;height:100%;}
.media img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .35s ease;}
.media img.is-hidden{display:none;}
.media-ph{position:absolute;inset:0;margin:auto;color:var(--brand-500);display:none;}
.media.is-empty .media-ph{display:block;}
.media-4x3{aspect-ratio:4/3;}
.media-16x10{aspect-ratio:16/10;}

/* ---------- sections ---------- */
.section{padding:48px 0;}
@media(min-width:768px){.section{padding:64px 0;}}
@media(min-width:1024px){.section{padding:88px 0;}}
.section-alt{background:#fff;border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2);}
.sec-head{max-width:720px;margin-bottom:36px;}
.sec-title{font-size:clamp(24px,2.8vw,34px);font-weight:700;line-height:1.3;letter-spacing:-.01em;}
.sec-sub{font-size:15px;color:var(--ink-2);margin-top:12px;}

/* ---------- stat strip ---------- */
.stat-strip-inner{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.stat-item{padding:22px 20px;border-bottom:1px solid var(--line-2);}
.stat-item:nth-child(2n){border-left:1px solid var(--line-2);}
.stat-item:nth-last-child(-n+2){border-bottom:0;}
.stat-num{font-size:26px;font-weight:700;color:var(--brand-700);line-height:1.2;}
.stat-txt{font-size:13px;color:var(--ink-3);margin-top:6px;}
@media(min-width:900px){
  .stat-strip-inner{grid-template-columns:repeat(4,minmax(0,1fr));}
  .stat-item{border-bottom:0;border-left:1px solid var(--line-2);}
  .stat-item:first-child{border-left:0;}
}

/* ---------- two column layout with toc ---------- */
.two-col{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;align-items:start;}
.toc-side{position:sticky;top:96px;}
.toc-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:14px;box-shadow:var(--shadow-card);}
.toc-title{font-size:13px;font-weight:600;color:var(--ink-3);letter-spacing:.04em;padding:4px 12px 10px;}
.toc-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin;}
.toc-link{
  display:block;white-space:nowrap;font-size:14px;color:var(--ink-2);
  padding:8px 12px;border-radius:8px;border-left:2px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.toc-link:hover{background:var(--brand-50);color:var(--brand-700);}
.toc-link.is-active{background:var(--brand-50);color:var(--brand-700);font-weight:600;border-left-color:var(--brand-600);}
@media(min-width:1024px){
  .two-col{grid-template-columns:260px minmax(0,1fr);gap:56px;}
  .toc-list{display:block;overflow:visible;}
  .toc-link{border-left:2px solid transparent;}
}
@media(max-width:1023px){
  .toc-side{position:static;top:auto;}
}

.content-block{padding-bottom:40px;border-bottom:1px solid var(--line-2);margin-bottom:40px;scroll-margin-top:96px;}
.content-block:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0;}
.content-block h2{font-size:clamp(21px,2.2vw,26px);font-weight:700;line-height:1.4;margin-bottom:16px;}
.content-block p{font-size:16px;line-height:1.85;color:#334155;max-width:68ch;margin-bottom:16px;}
.content-block p:last-child{margin-bottom:0;}
.block-figure{margin:22px 0;}
.block-caption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}

/* ---------- scenario cards ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(1,minmax(0,1fr));gap:24px;}
@media(min-width:768px){.scene-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:var(--brand-100);}
.scene-card{display:flex;flex-direction:column;overflow:hidden;padding:0;}
.scene-card .media{border-radius:0;aspect-ratio:16/10;}
.scene-body{padding:22px;display:flex;flex-direction:column;flex:1;}
.scene-body h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.scene-body p{font-size:14px;line-height:1.75;color:var(--ink-2);margin-bottom:16px;}
.scene-body .scene-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.scene-note{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-3);}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(1,minmax(0,1fr));gap:16px;}
@media(min-width:768px){.steps{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,minmax(0,1fr));}}
.step{position:relative;background:var(--brand-50);border-radius:14px;padding:22px 20px;}
.step-num{
  width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;margin-bottom:14px;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.step p{font-size:14px;line-height:1.7;color:var(--ink-2);}
@media(min-width:1024px){
  .step::after{
    content:"";position:absolute;top:38px;right:-14px;width:28px;
    border-top:1px dashed var(--brand-100);
  }
  .step:last-child::after{display:none;}
}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;}
@media(min-width:1024px){.faq-layout{grid-template-columns:34% minmax(0,1fr);gap:56px;}}
.faq-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-card);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line-2);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--ink);padding:20px 22px;
  transition:color .18s ease,background .18s ease;
}
.faq-q:hover{color:var(--brand-700);background:#FAFBFF;}
.faq-icon{position:relative;flex:0 0 auto;width:20px;height:20px;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-600);border-radius:2px;transition:transform .24s ease;}
.faq-icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
.faq-a p{font-size:15px;line-height:1.8;color:var(--ink-2);padding:0 22px 20px;}

/* ---------- cta ---------- */
.cta-band{
  border-radius:var(--r-cta);padding:36px 24px;
  background:linear-gradient(100deg,#1F5AE0 0%,#1848BC 100%);
  box-shadow:0 24px 48px -28px rgba(24,72,188,.7);
  display:flex;flex-direction:column;gap:24px;align-items:flex-start;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.35;}
.cta-band p{color:rgba(255,255,255,.85);font-size:15px;margin-top:10px;max-width:52ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
@media(min-width:900px){
  .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:44px 48px;}
}

/* ---------- footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:8px;}
.footer-grid{display:grid;grid-template-columns:repeat(1,minmax(0,1fr));gap:32px;padding:48px 0 32px;}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding:64px 0 40px;}}
.footer-brand-text{font-size:14px;color:var(--ink-2);margin-top:14px;max-width:34ch;}
.footer-title{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:14px;}
.footer-link{display:block;font-size:14px;color:var(--ink-2);padding:5px 0;transition:color .18s ease,transform .18s ease;}
.footer-link:hover{color:var(--brand-700);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid var(--line-2);padding:18px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:var(--ink-3);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease-out,transform .4s ease-out;}
.reveal.is-in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  .card:hover,.btn-primary:hover,.btn-white:hover{transform:none;}
}

/* ---------- mobile nav ---------- */
@media(max-width:1023px){
  .cmd-search,.quick-link{display:none;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:300px;max-width:86vw;
    background:#fff;flex-direction:column;align-items:stretch;gap:6px;
    padding:86px 20px 28px;margin-left:0;
    transform:translateX(102%);transition:transform .28s ease;
    box-shadow:-24px 0 48px -28px rgba(15,23,42,.45);overflow-y:auto;z-index:95;
  }
  .main-nav.is-open{transform:translateX(0);}
  .nav-link{width:100%;font-size:16px;padding:12px 14px;}
  .nav-link.is-active::after{display:none;}
  .nav-link.is-active{background:var(--brand-50);}
  .drawer-extra{display:block;margin-top:18px;padding-top:18px;border-top:1px solid var(--line-2);}
  .drawer-extra .cmd-search{display:flex;width:100%;}
  .drawer-extra .btn{width:100%;margin-top:14px;}
}
@media(max-width:520px){
  .header-inner{height:64px;gap:12px;}
  .logo-text{font-size:17px;}
  .hero-title{font-size:30px;}
  .hero-float{position:static;width:100%;margin-top:14px;}
  .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: category3 */
:root{
  --brand-600:#1F5AE0;
  --brand-700:#1848BC;
  --brand-500:#3B74F0;
  --brand-50:#EEF3FF;
  --brand-100:#DCE7FF;
  --accent:#0FA6A0;
  --accent-700:#0B7C77;
  --accent-50:#E6F7F6;
  --warm:#F5A524;
  --text:#0F172A;
  --text-2:#475569;
  --text-3:#94A3B8;
  --border:#E6EAF2;
  --divider:#EEF1F6;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --radius-pill:999px;
  --shadow-card:0 1px 2px rgba(15,23,42,.04),0 10px 28px -14px rgba(31,90,224,.16);
  --shadow-hover:0 2px 6px rgba(15,23,42,.06),0 18px 40px -18px rgba(31,90,224,.28);
  --shadow-nav:0 1px 0 #E6EAF2,0 8px 24px -20px rgba(15,23,42,.25);
  --container:1200px;
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px;}
body.site-body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.site-body h1,body.site-body h2,body.site-body h3,body.site-body h4{
  margin:0;line-height:1.3;font-weight:700;letter-spacing:-0.01em;color:var(--text);
}
body.site-body p{margin:0;}
body.site-body ul{margin:0;padding:0;list-style:none;}
body.site-body a{color:inherit;text-decoration:none;}
body.site-body img{display:block;max-width:100%;height:auto;}
body.site-body button{font-family:inherit;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:500;letter-spacing:.04em;
  color:var(--brand-700);background:var(--brand-50);
  border-radius:var(--radius-pill);padding:6px 14px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:clamp(24px,2.8vw,34px);}
.section-head p{margin-top:14px;font-size:16px;color:var(--text-2);}
.lead{font-size:17px;color:var(--text-2);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.98);
  border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-nav);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 1px 0 var(--border),0 10px 28px -18px rgba(15,23,42,.28);background:rgba(255,255,255,.96);}
.header-inner{display:flex;align-items:center;gap:24px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:26px;height:26px;border-radius:8px;background:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
  box-shadow:0 6px 14px -8px rgba(31,90,224,.8);
}
.logo-text{font-size:17px;font-weight:700;letter-spacing:-0.01em;color:var(--text);white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:38px;
  padding:0 14px;border-radius:8px;font-size:15px;font-weight:500;color:var(--text-2);
  transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--brand-700);background:var(--brand-50);}
.nav-link.is-active{color:var(--brand-700);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  bottom:2px;width:20px;height:2px;border-radius:2px;background:var(--brand-600);
}
.header-right{margin-left:auto;display:flex;align-items:center;gap:14px;}
.cmd-search{
  display:flex;align-items:center;gap:8px;width:240px;height:40px;
  padding:0 12px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-btn);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.cmd-search:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(31,90,224,.18);}
.cmd-search input{
  flex:1;min-width:0;border:0;outline:0;background:transparent;
  font-size:14px;color:var(--text);
}
.cmd-search input::placeholder{color:var(--text-3);}
.kbd{
  font-size:11px;font-weight:600;color:var(--text-3);background:#F1F5F9;
  border-radius:6px;padding:2px 6px;white-space:nowrap;
}
.quick-link{
  display:inline-flex;align-items:center;gap:4px;font-size:14px;font-weight:500;color:var(--text-2);
  transition:color .18s ease;
}
.quick-link:hover{color:var(--brand-700);}
.quick-link svg{transition:transform .18s ease;}
.quick-link:hover svg{transform:translateX(2px);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--border);border-radius:10px;
  background:#fff;cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;border:1px solid transparent;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn:focus-visible{outline:3px solid rgba(31,90,224,.28);outline-offset:2px;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-card);}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:#fff;border-color:var(--brand-100);color:var(--brand-700);}
.btn-secondary:hover{background:var(--brand-50);transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--brand-700);box-shadow:0 10px 24px -14px rgba(15,23,42,.4);}
.btn-light:hover{transform:translateY(-1px);background:#F7F9FC;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-600);
  border-bottom:2px solid transparent;padding-bottom:2px;
}
.btn-text:hover{color:var(--brand-700);border-bottom-color:var(--brand-100);}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(180deg,#EEF3FF 0%,#F7F9FC 62%,#F7F9FC 100%);padding:40px 0 76px;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);line-height:28px;margin-bottom:14px;flex-wrap:wrap;}
.breadcrumb a{color:var(--text-3);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .sep{color:#CBD5E1;}
.breadcrumb .current{color:var(--brand-700);font-weight:500;}
.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 18px;
  border-radius:var(--radius-pill);border:1px solid var(--border);background:#fff;
  font-size:14px;font-weight:500;color:var(--text-2);
  transition:color .18s ease,border-color .18s ease,background .18s ease,transform .18s ease,box-shadow .18s ease;
}
.pill:hover{color:var(--brand-700);border-color:var(--brand-100);transform:translateY(-1px);}
.pill.is-active{background:var(--brand-600);border-color:var(--brand-600);color:#fff;box-shadow:var(--shadow-card);}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero h1{font-size:clamp(30px,4.2vw,50px);margin-bottom:20px;}
.hero-sub{font-size:17px;color:var(--text-2);max-width:60ch;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.trust-row{display:flex;flex-wrap:wrap;gap:12px 26px;}
.trust-item{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);}
.trust-item .ico{
  width:22px;height:22px;border-radius:50%;background:var(--accent-50);color:var(--accent-700);
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
}
.hero-media{position:relative;}
.media-frame{
  border-radius:var(--radius-img);overflow:hidden;background:linear-gradient(135deg,#EEF3FF,#F7F9FC);
  box-shadow:var(--shadow-card);
}
.media-frame img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.float-card{
  position:absolute;right:-8px;bottom:20px;width:228px;background:#fff;border:1px solid var(--border);
  border-radius:14px;padding:16px 18px;box-shadow:var(--shadow-card);
}
.float-card .num{font-size:26px;font-weight:700;color:var(--brand-700);line-height:1.2;}
.float-card .cap{font-size:13px;color:var(--text-3);margin-top:4px;}

/* ---------- Gallery grid ---------- */
.gallery-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.g-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.g-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:var(--brand-100);}
.g-card .thumb{overflow:hidden;background:linear-gradient(135deg,#EEF3FF,#F7F9FC);}
.g-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s ease;}
.g-card:hover .thumb img{transform:scale(1.03);}
.g-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.g-body h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.g-body p{font-size:14px;color:var(--text-2);line-height:1.7;flex:1;}
.g-foot{display:flex;align-items:center;justify-content:space-between;margin-top:16px;padding-top:14px;border-top:1px solid var(--divider);}
.tag{display:inline-flex;align-items:center;font-size:12.5px;font-weight:500;border-radius:var(--radius-pill);padding:4px 12px;}
.tag-brand{background:var(--brand-50);color:var(--brand-700);}
.tag-accent{background:var(--accent-50);color:var(--accent-700);}
.tag-muted{background:#F1F5F9;color:var(--text-2);}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);}
.arrow-link svg{transition:transform .18s ease;}
.g-card:hover .arrow-link svg{transform:translateX(3px);}

/* ---------- Note band ---------- */
.note-band{
  background:var(--brand-50);border-radius:var(--radius-card);padding:44px 48px;
  display:flex;gap:40px;align-items:center;justify-content:space-between;flex-wrap:wrap;
}
.note-band h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:12px;}
.note-band p{font-size:15px;color:var(--text-2);max-width:70ch;}
.note-band p + p{margin-top:10px;}
.note-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.note-list li{
  font-size:13.5px;color:var(--brand-700);background:#fff;border-radius:var(--radius-pill);
  padding:6px 14px;border:1px solid var(--brand-100);
}

/* ---------- Flow steps ---------- */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;position:relative;}
.flow-step{background:var(--brand-50);border-radius:14px;padding:24px 22px;position:relative;}
.flow-step .idx{
  width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;margin-bottom:14px;
}
.flow-step h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.flow-step p{font-size:14px;color:var(--text-2);line-height:1.7;}
.flow-line{
  position:absolute;top:40px;left:8%;right:8%;border-top:1px dashed var(--brand-100);z-index:0;
}

/* ---------- Metrics ---------- */
.metrics-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:32px 8px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
}
.metric{text-align:center;padding:6px 20px;border-right:1px solid var(--divider);}
.metric:last-child{border-right:0;}
.metric .value{font-size:28px;font-weight:700;color:var(--brand-700);line-height:1.2;}
.metric .label{font-size:13px;color:var(--text-3);margin-top:8px;}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:34% 1fr;gap:48px;align-items:start;}
.faq-aside h2{font-size:clamp(24px,2.8vw,34px);margin-bottom:14px;}
.faq-aside p{font-size:15px;color:var(--text-2);}
.faq-list{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;}
.faq-item + .faq-item{border-top:1px solid var(--divider);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);transition:background .18s ease;
}
.faq-q:hover{background:#FAFBFE;}
.faq-q:focus-visible{outline:3px solid rgba(31,90,224,.28);outline-offset:-3px;}
.faq-icon{position:relative;width:20px;height:20px;flex-shrink:0;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-600);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .24s ease,opacity .24s ease;
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--text-2);}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(100deg,var(--brand-600),var(--brand-700));
  border-radius:20px;padding:52px 56px;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;box-shadow:var(--shadow-card);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.86);font-size:15px;max-width:56ch;}

/* ---------- Footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--border);padding:64px 0 0;margin-top:88px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand-text{margin-top:16px;font-size:14px;color:var(--text-2);max-width:34ch;line-height:1.7;}
.footer-title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;}
.footer-link{
  display:block;font-size:14px;color:var(--text-2);padding:6px 0;
  transition:color .18s ease,transform .18s ease;
}
.footer-link:hover{color:var(--brand-700);transform:translateX(2px);}
.footer-bottom{
  margin-top:52px;padding:20px 0;border-top:1px solid var(--divider);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12px;color:var(--text-3);
}

/* ---------- Drawer ---------- */
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;background:#fff;z-index:90;
  transform:translateX(102%);transition:transform .28s ease;padding:24px;
  box-shadow:-16px 0 40px -24px rgba(15,23,42,.4);overflow-y:auto;
}
.nav-drawer.open{transform:translateX(0);}
.nav-drawer .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--border);background:#fff;font-size:18px;color:var(--text-2);cursor:pointer;}
.drawer-link{display:block;padding:13px 12px;border-radius:10px;font-size:15px;font-weight:500;color:var(--text-2);}
.drawer-link:hover{background:var(--brand-50);color:var(--brand-700);}
.drawer-link.is-active{background:var(--brand-50);color:var(--brand-700);font-weight:600;}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;border:1px solid var(--border);border-radius:10px;padding:0 12px;margin:18px 0;}
.drawer-search input{border:0;outline:0;flex:1;font-size:14px;}
.nav-mask{
  position:fixed;inset:0;background:rgba(15,23,42,.4);opacity:0;visibility:hidden;
  transition:opacity .28s ease,visibility .28s ease;z-index:80;
}
.nav-mask.open{opacity:1;visibility:visible;}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease-out,transform .4s ease-out;}
.reveal.is-visible{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .gallery-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .cmd-search{display:none;}
  .quick-link{display:none;}
  .nav-toggle{display:flex;}
  .header-right{gap:10px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-media{order:2;}
  .gallery-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr));}
  .flow-line{display:none;}
  .metrics-card{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 0;}
  .metric:nth-child(2){border-right:0;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:64px 0;}
  .cta-band{padding:44px 36px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:48px 0;}
  .section-tight{padding:40px 0;}
  .hero{padding:26px 0 52px;}
  .hero-sub{font-size:16px;}
  .gallery-grid{grid-template-columns:1fr;gap:16px;}
  .flow{grid-template-columns:1fr;gap:16px;}
  .metrics-card{grid-template-columns:1fr;padding:22px 6px;}
  .metric{border-right:0;border-bottom:1px solid var(--divider);padding:14px 20px;}
  .metric:last-child{border-bottom:0;}
  .note-band{padding:28px 22px;gap:24px;}
  .cta-band{padding:32px 24px;border-radius:16px;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .float-card{position:static;width:100%;margin-top:16px;}
  .faq-q{font-size:16px;padding:18px 20px;}
  .faq-a p{padding:0 20px 20px;}
  .logo-text{font-size:16px;}
}