/* roulang page: index */
:root{
  --brand:#1B4F9C;
  --brand-600:#2F6FE0;
  --brand-50:#EFF5FF;
  --accent:#F2994A;
  --ink:#0F1B2D;
  --ink-2:#55637A;
  --ink-3:#8A98AD;
  --line:#E5EBF3;
  --bg:#F8FAFD;
  --card:#FFFFFF;
  --radius-card:18px;
  --radius-chip:10px;
  --radius-pill:999px;
  --shadow-card:0 1px 2px rgba(15,27,45,.04), 0 12px 28px -12px rgba(27,79,156,.16);
  --shadow-hover:0 18px 40px -16px rgba(27,79,156,.28);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:3px solid rgba(27,79,156,.4);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}

.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;}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px;}
@media (max-width:639px){.header-inner{height:56px;}}
.brand{display:flex;align-items:center;gap:10px;min-width:0;}
.brand-badge{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-600) 100%);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;letter-spacing:.5px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.brand-name{font-size:16px;font-weight:600;color:var(--ink);white-space:nowrap;}
.brand-sub{font-size:11px;color:var(--ink-3);white-space:nowrap;}
.nav-desktop{display:flex;align-items:center;gap:4px;}
.nav-link{
  padding:8px 14px;border-radius:8px;font-size:15px;color:var(--ink-2);
  transition:background .2s ease,color .2s ease;position:relative;
}
.nav-link:hover{background:var(--brand-50);color:var(--brand);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:10px;}
.menu-btn{
  display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;
  border-radius:10px;align-items:center;justify-content:center;cursor:pointer;color:var(--ink);
}
.menu-btn:hover{background:var(--brand-50);color:var(--brand);}
@media (max-width:860px){
  .nav-desktop{display:none;}
  .menu-btn{display:flex;}
  .header-cta{display:none;}
}
.drawer{
  display:none;position:fixed;inset:0;background:#fff;z-index:80;padding:20px;
}
.drawer.is-open{display:block;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:10px;
  cursor:pointer;color:var(--ink);
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  padding:14px 16px;border-radius:12px;font-size:17px;color:var(--ink);
  border:1px solid transparent;
}
.drawer-nav a:hover{background:var(--brand-50);color:var(--brand);border-color:rgba(27,79,156,.12);}
.drawer-nav a.is-active{background:var(--brand-50);color:var(--brand);font-weight:600;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius-pill);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px -12px rgba(27,79,156,.6);}
.btn-primary:hover{background:var(--brand-600);transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand);border-color:rgba(27,79,156,.2);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);
  font-size:15px;font-weight:600;
}
.btn-text i{transition:transform .2s ease;}
.btn-text:hover i{transform:translateX(4px);}
.btn-sm{padding:9px 18px;font-size:14px;}

/* ---------- Hero ---------- */
.hero{position:relative;background:#fff;overflow:hidden;padding:56px 0 64px;}
.hero::after{
  content:"";position:absolute;right:-80px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,111,224,.10) 0%,rgba(47,111,224,0) 70%);
  pointer-events:none;
}
.hero-deco{
  position:absolute;right:0;bottom:0;width:420px;max-width:45vw;opacity:.10;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;height:100%;pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr;gap:40px;align-items:center;}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:5fr 7fr;gap:56px;}
}
.pill{
  display:inline-flex;align-items:center;gap:8px;background:var(--brand-50);
  color:var(--brand);border-radius:var(--radius-chip);padding:6px 12px;font-size:12px;font-weight:600;
}
.pill i{font-size:11px;}
.hero h1{
  margin-top:18px;
  font-size:clamp(28px,4.2vw,48px);line-height:1.2;font-weight:600;letter-spacing:-.2px;
}
.hero-sub{margin-top:18px;color:var(--ink-2);font-size:17px;line-height:1.85;max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:28px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line);}
.hero-facts li{display:flex;flex-direction:column;line-height:1.4;}
.hero-facts strong{font-size:22px;font-weight:600;color:var(--brand);}
.hero-facts span{font-size:13px;color:var(--ink-3);}

.hero-wall{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.vcard{
  position:relative;overflow:hidden;border-radius:22px;background:var(--brand-50);
  box-shadow:var(--shadow-card);
}
.vcard img{width:100%;height:100%;object-fit:cover;}
.vcard-main{grid-row:span 2;height:560px;}
.vcard-sm{height:272px;}
.vcard::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,27,45,0) 45%,rgba(15,27,45,.55) 100%);
}
.v-play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:3;
  width:56px;height:56px;border-radius:50%;background:rgba(255,255,255,.92);
  display:flex;align-items:center;justify-content:center;color:var(--brand);font-size:17px;
  box-shadow:0 10px 26px -10px rgba(15,27,45,.5);transition:transform .2s ease;
}
.vcard:hover .v-play{transform:translate(-50%,-50%) scale(1.08);}
.v-tag{
  position:absolute;right:12px;top:12px;z-index:3;background:var(--accent);color:#fff;
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:var(--radius-pill);
}
.v-dur{
  position:absolute;right:12px;bottom:12px;z-index:3;background:rgba(15,27,45,.62);color:#fff;
  font-size:12px;padding:3px 9px;border-radius:var(--radius-pill);
}
.v-cap{
  position:absolute;left:14px;bottom:14px;right:80px;z-index:3;color:#fff;font-size:14px;
  font-weight:600;line-height:1.5;
}
@media (max-width:860px){
  .hero{padding:36px 0 44px;}
  .hero-wall{grid-template-columns:1fr 1fr;}
  .vcard-main{grid-row:auto;grid-column:1 / -1;height:auto;aspect-ratio:9/16;max-height:520px;}
  .vcard-sm{height:auto;aspect-ratio:9/16;}
}

/* ---------- Sections ---------- */
.section{padding:44px 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-eyebrow{font-size:13px;color:var(--brand-600);font-weight:600;letter-spacing:.4px;}
.section-title{
  position:relative;margin-top:8px;padding-left:14px;
  font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:600;
}
.section-title::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:4px;background:var(--brand);
}
.section-desc{margin-top:10px;padding-left:14px;color:var(--ink-2);font-size:15px;max-width:660px;}

/* ---------- Clip grid ---------- */
.clip-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
@media (min-width:640px){.clip-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.clip-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;}}
@media (max-width:639px){
  .clip-grid{display:flex;overflow-x:auto;gap:14px;padding-bottom:12px;scroll-snap-type:x mandatory;}
  .clip-card{flex:0 0 240px;scroll-snap-align:start;}
}
.clip-card{
  background:var(--card);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;
}
.clip-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(47,111,224,.28);}
.clip-cover{position:relative;aspect-ratio:9/16;background:var(--brand-50);overflow:hidden;}
.clip-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.clip-card:hover .clip-cover img{transform:scale(1.04);}
.clip-cover .v-play{width:46px;height:46px;font-size:14px;opacity:0;transition:opacity .2s ease,transform .2s ease;}
.clip-card:hover .clip-cover .v-play{opacity:1;}
.clip-body{padding:14px 16px 16px;}
.clip-title{
  font-size:15px;line-height:1.6;font-weight:600;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:48px;
}
.clip-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:12px;font-size:13px;color:var(--ink-3);}
.badge{
  display:inline-flex;align-items:center;gap:5px;background:var(--brand-50);color:var(--brand);
  border-radius:var(--radius-chip);padding:3px 9px;font-size:12px;font-weight:600;
}
.badge-outline{
  background:#fff;color:var(--accent);border:1px solid rgba(242,153,74,.45);
}
.badge-solid{background:var(--accent);color:#fff;}

/* ---------- Checklist rows ---------- */
.list-layout{display:grid;grid-template-columns:1fr;gap:28px;}
@media (min-width:1024px){.list-layout{grid-template-columns:4fr 8fr;gap:48px;align-items:start;}}
.list-aside{position:static;}
@media (min-width:1024px){.list-aside{position:sticky;top:96px;}}
.list-cols{display:grid;grid-template-columns:1fr;gap:0 40px;}
@media (min-width:768px){.list-cols{grid-template-columns:1fr 1fr;}}
.list-row{
  display:flex;align-items:flex-start;gap:16px;padding:18px 12px;border-top:1px solid var(--line);
  border-radius:10px;transition:background .2s ease,transform .2s ease;
}
.list-row:last-child{border-bottom:1px solid var(--line);}
.list-row:hover{background:var(--brand-50);}
.list-row:hover .list-go{transform:translateX(4px);color:var(--brand);}
.list-num{font-size:16px;font-weight:600;color:var(--brand);flex:0 0 30px;line-height:1.5;}
.list-main{flex:1;min-width:0;}
.list-name{font-size:16px;font-weight:600;color:var(--ink);}
.list-note{margin-top:4px;font-size:14px;color:var(--ink-2);line-height:1.7;}
.list-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px;}
.list-go{color:var(--ink-3);font-size:14px;transition:transform .2s ease,color .2s ease;padding-top:4px;}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:18px;}
@media (min-width:640px){.steps{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.steps{grid-template-columns:repeat(4,minmax(0,1fr));}}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;
  box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.step-idx{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;
  background:var(--brand-50);color:var(--brand);font-weight:600;font-size:14px;margin-bottom:14px;
}
.step h3{font-size:18px;font-weight:600;line-height:1.5;}
.step p{margin-top:8px;font-size:14px;color:var(--ink-2);line-height:1.75;}

/* ---------- Reviews ---------- */
.reviews-band{
  position:relative;background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  overflow:hidden;
}
.reviews-band .band-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;opacity:.16;
}
.reviews-band .container{position:relative;}
.review-grid{display:grid;grid-template-columns:1fr;gap:16px;}
@media (min-width:640px){.review-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
@media (max-width:639px){
  .review-grid{display:flex;overflow-x:auto;gap:14px;padding-bottom:10px;}
  .review-card{flex:0 0 268px;}
}
.review-card{
  background:var(--brand-50);border:1px solid rgba(27,79,156,.1);border-radius:14px;padding:20px;
}
.review-top{display:flex;align-items:center;gap:12px;}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--brand);color:#fff;flex:0 0 40px;
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:600;
}
.review-name{font-size:14px;font-weight:600;color:var(--ink);}
.stars{display:flex;gap:2px;color:var(--accent);font-size:12px;margin-top:2px;}
.review-text{margin-top:12px;font-size:14px;color:var(--ink-2);line-height:1.75;}
.review-foot{margin-top:14px;display:flex;align-items:center;gap:8px;font-size:12px;color:var(--ink-3);}

/* ---------- News (CMS) ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:640px){.news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);height:100%;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(47,111,224,.28);}
.news-cover{aspect-ratio:9/16;background:var(--brand-50);position:relative;overflow:hidden;}
.news-cover img{width:100%;height:100%;object-fit:cover;}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.news-title{
  margin-top:12px;font-size:17px;font-weight:600;line-height:1.55;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-summary{
  margin-top:10px;font-size:14px;color:var(--ink-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  gap:12px;font-size:13px;color:var(--ink-3);
}
.empty-state{
  border:1px dashed rgba(27,79,156,.3);border-radius:var(--radius-card);background:#fff;
  padding:40px 24px;text-align:center;grid-column:1 / -1;
}
.empty-state p{color:var(--ink-2);font-size:15px;}
.empty-state a{margin-top:14px;}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;max-width:880px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-color:rgba(27,79,156,.35);box-shadow:var(--shadow-card);}
.faq-head{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:#fff;border:0;text-align:left;cursor:pointer;font-size:16px;
  font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-head:hover{background:var(--brand-50);}
.faq-item.is-open .faq-head{color:var(--brand);position:relative;}
.faq-item.is-open .faq-head::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;background:var(--brand);
}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;background:var(--brand-50);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:12px;transition:transform .25s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-panel{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-panel-inner{padding:0 20px 20px;color:var(--ink-2);font-size:15px;line-height:1.85;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-50);border-radius:24px;padding:32px 24px;
  display:grid;gap:22px;align-items:center;
}
@media (min-width:768px){
  .cta-band{grid-template-columns:1fr auto;padding:40px 44px;}
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);font-weight:600;line-height:1.4;}
.cta-band p{margin-top:10px;color:var(--ink-2);font-size:15px;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg);border-top:1px solid var(--line);margin-top:24px;padding:48px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap: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 1.2fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-desc{font-size:13px;color:var(--ink-2);line-height:1.9;max-width:320px;}
.footer-title{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:10px;font-size:13px;color:var(--ink-2);}
.footer-links a{transition:color .2s ease;}
.footer-links a:hover{color:var(--brand-600);}
.footer-contact{font-size:13px;color:var(--ink-2);line-height:1.9;}
.footer-bottom{
  margin-top:34px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--ink-3);
}
.footer-bottom a:hover{color:var(--brand-600);}

/* roulang page: article */
:root{
    --brand:#1B4F9C;
    --brand-600:#2F6FE0;
    --brand-50:#EFF5FF;
    --accent:#F2994A;
    --ink:#0F1B2D;
    --ink-2:#55637A;
    --ink-3:#8A98AD;
    --line:#E5EBF3;
    --bg:#F8FAFD;
    --card:#FFFFFF;
    --radius-card:18px;
    --radius-sm:10px;
    --radius-pill:999px;
    --shadow-soft:0 1px 2px rgba(15,27,45,.04), 0 12px 28px -12px rgba(27,79,156,.16);
    --shadow-lift:0 18px 40px -16px rgba(27,79,156,.28);
    --container:1200px;
    --nav-h:64px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border:0}
  a{color:inherit;text-decoration:none}
  button,input{font:inherit;color:inherit}
  button{background:none;border:0;cursor:pointer}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  :focus-visible{outline:3px solid rgba(27,79,156,.4);outline-offset:2px;border-radius:6px}
  .container{max-width:var(--container);margin:0 auto;padding:0 20px}
  @media (min-width:1024px){.container{padding:0 32px}}
  .num{font-variant-numeric:tabular-nums}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.94);
    border-bottom:1px solid var(--line);
  }
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
  .brand{display:flex;align-items:center;gap:12px}
  .brand-badge{
    width:42px;height:42px;flex:0 0 42px;border-radius:12px;
    background:var(--brand);color:#fff;font-weight:700;font-size:15px;letter-spacing:.02em;
    display:flex;align-items:center;justify-content:center;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.25}
  .brand-name{font-size:17px;font-weight:600;color:var(--ink)}
  .brand-sub{font-size:12px;color:var(--ink-3)}
  .nav-desktop{display:none;align-items:center;gap:4px}
  @media (min-width:900px){.nav-desktop{display:flex}}
  .nav-link{
    position:relative;display:inline-block;padding:9px 14px;border-radius:8px;
    font-size:15px;color:var(--ink-2);transition:background .2s ease,color .2s ease;
  }
  .nav-link:hover{background:var(--brand-50);color:var(--brand)}
  .nav-link.is-active{color:var(--brand);font-weight:600}
  .nav-link.is-active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
    background:var(--brand);border-radius:2px;
  }
  .header-actions{display:flex;align-items:center;gap:10px}
  .menu-btn{
    width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
    background:#fff;color:var(--ink-2);display:flex;align-items:center;justify-content:center;
  }
  .menu-btn:hover{background:var(--brand-50);color:var(--brand)}
  @media (min-width:900px){.menu-btn{display:none}}
  .header-cta{display:none}
  @media (min-width:640px){.header-cta{display:inline-flex}}
  .mobile-nav{
    display:none;border-top:1px solid var(--line);background:#fff;
    padding:12px 20px 20px;
  }
  .mobile-nav.is-open{display:block}
  @media (min-width:900px){.mobile-nav.is-open{display:none}}
  .mobile-nav a{
    display:block;padding:13px 12px;border-radius:12px;color:var(--ink-2);font-size:16px;
  }
  .mobile-nav a:hover{background:var(--brand-50);color:var(--brand)}
  .mobile-nav a.is-active{color:var(--brand);font-weight:600;background:var(--brand-50)}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--radius-pill);padding:12px 24px;font-size:15px;font-weight:600;
    transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
    border:1px solid transparent;cursor:pointer;
  }
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -12px rgba(27,79,156,.7)}
  .btn-primary:hover{background:var(--brand-600);transform:translateY(1px)}
  .btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
  .btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-50);color:var(--brand)}
  .btn-sm{padding:9px 18px;font-size:14px}
  .text-btn{
    display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-weight:600;font-size:15px;
  }
  .text-btn i{transition:transform .2s ease}
  .text-btn:hover i{transform:translateX(4px)}

  /* ---------- badges ---------- */
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    background:var(--brand-50);color:var(--brand);
    border-radius:var(--radius-sm);padding:4px 10px;font-size:12px;font-weight:600;
  }
  .badge-accent{background:#FEF3E8;color:#C2703A}
  .badge-outline{background:#fff;border:1px solid var(--line);color:var(--ink-2);font-weight:500}

  /* ---------- breadcrumb + hero ---------- */
  .article-hero{background:#fff;border-bottom:1px solid var(--line);padding:26px 0 34px}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:18px}
  .breadcrumb a{color:var(--ink-3)}
  .breadcrumb a:hover{color:var(--brand-600)}
  .breadcrumb .sep{color:#C6D2E2}
  .article-h1{
    font-size:clamp(28px,4.2vw,48px);line-height:1.2;font-weight:600;color:var(--ink);
    letter-spacing:-.01em;max-width:900px;
  }
  .article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:18px;font-size:13px;color:var(--ink-3)}
  .meta-dot{width:4px;height:4px;border-radius:50%;background:#C6D2E2}
  .hero-lead{max-width:760px;margin-top:16px;font-size:16px;line-height:1.85;color:var(--ink-2)}

  /* ---------- layout ---------- */
  .article-main{padding:44px 0 0}
  @media (min-width:1024px){.article-main{padding:64px 0 0}}
  .layout{display:grid;grid-template-columns:1fr;gap:28px}
  @media (min-width:1024px){.layout{grid-template-columns:8fr 4fr;gap:34px}}
  .card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-soft);
  }
  .article-panel{padding:22px}
  @media (min-width:768px){.article-panel{padding:34px 38px}}

  /* ---------- prose ---------- */
  .article-body{font-size:17px;line-height:1.85;color:var(--ink-2);word-break:break-word}
  .article-body > p:first-of-type{font-size:17px;color:var(--ink-2)}
  .article-body p{margin:0 0 20px}
  .article-body h2{
    font-size:clamp(22px,2.4vw,28px);line-height:1.35;font-weight:600;color:var(--ink);
    margin:40px 0 16px;padding-left:14px;border-left:4px solid var(--brand);
  }
  .article-body h3{font-size:20px;line-height:1.5;font-weight:600;color:var(--ink);margin:28px 0 12px}
  .article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin:22px 0 10px}
  .article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px;line-height:1.9}
  .article-body ul li{list-style:disc;margin-bottom:8px}
  .article-body ol li{list-style:decimal;margin-bottom:8px}
  .article-body blockquote{
    background:var(--brand-50);border-left:4px solid var(--brand);border-radius:12px;
    padding:16px 20px;margin:24px 0;color:var(--ink);
  }
  .article-body blockquote p:last-child{margin-bottom:0}
  .article-body img{border-radius:12px;margin:24px auto}
  .article-body figure{margin:24px 0}
  .article-body figcaption{font-size:12px;color:var(--ink-3);text-align:center;margin-top:8px}
  .article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
  .article-body a:hover{color:var(--brand)}
  .article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
  .article-body th{background:var(--brand-50);color:var(--ink);text-align:left;font-weight:600}
  .article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px}
  .article-body tbody tr:hover{background:var(--brand-50)}
  .article-body code{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:2px 8px;font-size:14px}
  .article-body pre{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:16px;overflow-x:auto;margin:0 0 20px}

  .article-foot{
    margin-top:32px;padding-top:20px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  }
  .article-foot .updated{font-size:13px;color:var(--ink-3)}
  .share-row{display:flex;flex-wrap:wrap;gap:10px}
  .chip-btn{
    display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:#fff;
    border-radius:var(--radius-pill);padding:8px 16px;font-size:13px;color:var(--ink-2);
    transition:background .2s ease,color .2s ease,border-color .2s ease;
  }
  .chip-btn:hover{background:var(--brand-50);border-color:var(--brand-50);color:var(--brand)}

  /* ---------- sidebar ---------- */
  .sidebar{display:flex;flex-direction:column;gap:20px}
  @media (min-width:1024px){
    .sidebar{position:sticky;top:88px;align-self:start}
  }
  .side-card{padding:20px 22px}
  .side-title{font-size:16px;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:8px;margin-bottom:14px}
  .side-title i{color:var(--brand-600);font-size:14px}
  .update-list li + li{border-top:1px solid var(--line)}
  .update-list a{display:block;padding:12px 0}
  .update-list .t{font-size:14px;line-height:1.7;color:var(--ink-2);transition:color .2s ease}
  .update-list a:hover .t{color:var(--brand-600)}
  .update-list .d{font-size:12px;color:var(--ink-3);margin-top:4px}
  .promo-card{
    padding:22px;border-radius:var(--radius-card);border:1px solid var(--brand-50);
    background:var(--brand-50);
  }
  .promo-card h3{font-size:17px;font-weight:600;color:var(--ink);margin-bottom:8px}
  .promo-card p{font-size:14px;line-height:1.7;color:var(--ink-2);margin-bottom:16px}
  .cat-list a{
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    padding:11px 12px;border-radius:var(--radius-sm);font-size:14px;color:var(--ink-2);
    transition:background .2s ease,color .2s ease;
  }
  .cat-list a:hover{background:var(--brand-50);color:var(--brand)}
  .cat-list a i{font-size:12px;color:var(--ink-3)}
  .cat-list a:hover i{color:var(--brand-600)}

  /* ---------- sections ---------- */
  .section{padding:64px 0 0}
  @media (min-width:1024px){.section{padding:88px 0 0}}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:24px}
  .section-title{font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:600;color:var(--ink)}
  .section-sub{font-size:14px;color:var(--ink-2);margin-top:8px}
  .grid-cards{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:640px){.grid-cards{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.grid-cards{grid-template-columns:repeat(3,1fr)}}
  .post-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-soft);overflow:hidden;display:flex;flex-direction:column;
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:#D7E3F5}
  .post-cover{position:relative;aspect-ratio:16/10;background:var(--brand-50)}
  .post-cover img{width:100%;height:100%;object-fit:cover}
  .post-cover .tag{position:absolute;left:12px;top:12px}
  .post-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
  .post-title{font-size:17px;line-height:1.5;font-weight:600;color:var(--ink)}
  .post-card:hover .post-title{color:var(--brand)}
  .clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
  .post-desc{font-size:14px;line-height:1.7;color:var(--ink-2)}
  .post-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--ink-3)}
  .post-meta i{color:var(--brand-600);font-size:12px}

  .pager-row{
    margin-top:28px;display:grid;grid-template-columns:1fr;gap:14px;
  }
  @media (min-width:768px){.pager-row{grid-template-columns:1fr 1fr}}
  .pager-item{
    display:flex;flex-direction:column;gap:6px;padding:18px 20px;border:1px solid var(--line);
    border-radius:var(--radius-card);background:#fff;transition:background .2s ease,border-color .2s ease,transform .2s ease;
  }
  .pager-item:hover{background:var(--brand-50);border-color:var(--brand-50);transform:translateY(-2px)}
  .pager-item span{font-size:12px;color:var(--ink-3)}
  .pager-item strong{font-size:15px;font-weight:600;color:var(--ink)}
  .pager-item:hover strong{color:var(--brand)}

  /* ---------- CTA ---------- */
  .cta-band{
    margin-top:64px;background:var(--brand-50);border-radius:24px;padding:28px 24px;
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  }
  @media (min-width:1024px){.cta-band{margin-top:88px;padding:38px 44px}}
  .cta-band h2{font-size:clamp(20px,2.4vw,26px);font-weight:600;color:var(--ink);line-height:1.4}
  .cta-band p{font-size:15px;color:var(--ink-2);margin-top:8px}

  /* ---------- footer ---------- */
  .site-footer{margin-top:64px;background:var(--bg);border-top:1px solid var(--line);padding:44px 0 26px}
  @media (min-width:1024px){.site-footer{margin-top:88px;padding:56px 0 28px}}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:28px}
  @media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr}}
  .footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
  .footer-desc{font-size:13px;line-height:1.9;color:var(--ink-2);max-width:320px}
  .footer-title{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:12px}
  .footer-links{display:flex;flex-direction:column;gap:9px}
  .footer-links a{font-size:13px;color:var(--ink-2);transition:color .2s ease}
  .footer-links a:hover{color:var(--brand-600)}
  .footer-contact{font-size:13px;line-height:1.9;color:var(--ink-2)}
  .footer-bottom{
    margin-top:32px;padding-top:18px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;
    font-size:13px;color:var(--ink-3);
  }
  .empty-box{
    border:1px dashed #C7D8F0;background:var(--brand-50);border-radius:var(--radius-card);
    padding:34px 24px;text-align:center;
  }
  .empty-box h3{font-size:18px;font-weight:600;color:var(--ink);margin-bottom:8px}
  .empty-box p{font-size:14px;color:var(--ink-2);margin-bottom:18px}

/* roulang page: category2 */
:root{
    --brand:#1B4F9C;
    --brand-600:#2F6FE0;
    --brand-50:#EFF5FF;
    --accent:#F2994A;
    --ink:#0F1B2D;
    --ink-2:#55637A;
    --ink-3:#8A98AD;
    --line:#E5EBF3;
    --bg:#F8FAFD;
    --radius-card:18px;
    --radius-sm:10px;
    --radius-pill:999px;
    --shadow-1:0 1px 2px rgba(15,27,45,.04), 0 12px 28px -12px rgba(27,79,156,.16);
    --shadow-2:0 18px 40px -16px rgba(27,79,156,.28);
    --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-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:1.85;
    color:var(--ink);
    background:var(--bg);
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;}
  h1,h2,h3,h4,p{margin:0;}
  :focus-visible{outline:3px solid rgba(27,79,156,.4);outline-offset:2px;border-radius:6px;}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  @media (min-width:1024px){ .container{padding:0 32px;} }

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.94);
    border-bottom:1px solid var(--line);
  }
  .header-inner{display:flex;align-items:center;gap:18px;height:56px;}
  @media (min-width:900px){ .header-inner{height:64px;} }
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand-badge{
    width:38px;height:38px;border-radius:12px;
    background:var(--brand);color:#fff;
    display:grid;place-items:center;
    font-size:15px;font-weight:700;letter-spacing:.5px;
    box-shadow:0 8px 18px -10px rgba(27,79,156,.8);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-name{font-size:16px;font-weight:600;color:var(--ink);}
  .brand-sub{font-size:11.5px;color:var(--ink-3);letter-spacing:.2px;}
  .nav-desktop{display:none;align-items:center;gap:4px;margin-left:14px;}
  @media (min-width:900px){ .nav-desktop{display:flex;} }
  .nav-link{
    padding:8px 14px;border-radius:8px;font-size:15px;color:var(--ink-2);
    transition:background-color .2s ease,color .2s ease;position:relative;
  }
  .nav-link:hover{background:var(--brand-50);color:var(--brand);}
  .nav-link.is-active{color:var(--brand);font-weight:600;}
  .nav-link.is-active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
    background:var(--brand);border-radius:2px;
  }
  .header-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
  .menu-btn{
    display:inline-flex;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
    background:#fff;color:var(--ink);cursor:pointer;transition:.2s;
  }
  .menu-btn:hover{background:var(--brand-50);color:var(--brand);border-color:#CFE0FA;}
  @media (min-width:900px){ .menu-btn{display:none;} }

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--radius-pill);padding:12px 24px;
    font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:transform .2s ease,background-color .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 20px -12px rgba(27,79,156,.85);}
  .btn-primary:hover{background:var(--brand-600);transform:translateY(-1px);box-shadow:0 16px 26px -14px rgba(47,111,224,.85);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:#fff;border-color:var(--line);color:var(--ink);}
  .btn-ghost:hover{background:var(--brand-50);color:var(--brand);border-color:#CFE0FA;transform:translateY(-1px);}
  .btn-sm{padding:9px 18px;font-size:14px;}
  .link-more{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand-600);}
  .link-more i{transition:transform .2s ease;}
  .link-more:hover i{transform:translateX(4px);}

  /* ---------- mobile drawer ---------- */
  .mobile-drawer{
    position:fixed;inset:0;z-index:80;background:#fff;
    display:none;flex-direction:column;padding:18px 20px 28px;gap:6px;
  }
  .mobile-drawer.is-open{display:flex;}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
  .drawer-close{
    width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
    background:#fff;cursor:pointer;display:grid;place-items:center;color:var(--ink-2);
  }
  .drawer-close:hover{background:var(--brand-50);color:var(--brand);}
  .drawer-link{
    padding:14px 16px;border-radius:14px;font-size:17px;color:var(--ink);
    display:flex;align-items:center;justify-content:space-between;
  }
  .drawer-link:hover{background:var(--brand-50);color:var(--brand);}
  .drawer-link.is-active{background:var(--brand-50);color:var(--brand);font-weight:600;}
  .drawer-link i{font-size:13px;color:var(--ink-3);}
  .drawer-cta{margin-top:14px;}
  @media (min-width:900px){ .mobile-drawer{display:none !important;} }

  /* ---------- page hero ---------- */
  .page-hero{
    background:var(--brand-50);
    border-bottom:1px solid #DCE8FB;
    padding:26px 0 32px;
  }
  @media (min-width:1024px){ .page-hero{padding:34px 0 44px;} }
  .crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);}
  .crumbs a:hover{color:var(--brand-600);}
  .crumbs i{font-size:10px;}
  .hero-title{
    margin-top:16px;
    font-size:clamp(28px,4.2vw,44px);
    line-height:1.2;
    font-weight:600;
    letter-spacing:-.2px;
    max-width:820px;
  }
  .hero-sub{
    margin-top:14px;font-size:16.5px;line-height:1.8;color:var(--ink-2);max-width:720px;
  }
  .hero-meta{
    margin-top:16px;display:flex;flex-wrap:wrap;gap:10px 18px;
    font-size:13px;color:var(--ink-3);
  }
  .hero-meta span{display:inline-flex;align-items:center;gap:6px;}
  .tag-row{margin-top:20px;display:flex;flex-wrap:wrap;gap:10px;}
  .tag{
    display:inline-flex;align-items:center;gap:6px;
    padding:7px 14px;border-radius:var(--radius-pill);
    background:#fff;border:1px solid #D7E5FA;color:var(--brand);
    font-size:13px;font-weight:600;
  }
  .tag.is-accent{border-color:#F7D3B0;color:#B96420;background:#FEF6EF;}
  .badge{
    display:inline-flex;align-items:center;gap:5px;
    padding:3px 10px;border-radius:var(--radius-sm);
    background:var(--brand-50);color:var(--brand);font-size:12px;font-weight:600;
  }

  /* ---------- layout ---------- */
  .guide-layout{display:grid;grid-template-columns:1fr;gap:30px;padding:44px 0 0;}
  @media (min-width:1024px){
    .guide-layout{grid-template-columns:minmax(0,3fr) minmax(0,9fr);gap:44px;padding-top:64px;}
  }

  /* ---------- toc ---------- */
  .toc-mobile{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;-ms-overflow-style:none;scrollbar-width:none;}
  .toc-mobile::-webkit-scrollbar{display:none;}
  @media (min-width:1024px){ .toc-mobile{display:none;} }
  .toc-mobile a{
    flex:0 0 auto;padding:9px 16px;border-radius:var(--radius-pill);
    background:#fff;border:1px solid var(--line);font-size:13.5px;color:var(--ink-2);
    white-space:nowrap;
  }
  .toc-mobile a:hover{border-color:#CFE0FA;color:var(--brand);background:var(--brand-50);}
  .toc-desktop{display:none;}
  @media (min-width:1024px){ .toc-desktop{display:block;position:sticky;top:88px;} }
  .toc-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:20px 18px;box-shadow:var(--shadow-1);
  }
  .toc-title{font-size:13px;font-weight:600;color:var(--ink-3);letter-spacing:.4px;}
  .toc-list{margin-top:14px;display:flex;flex-direction:column;gap:2px;}
  .toc-list a{
    display:block;padding:9px 12px;border-radius:8px;font-size:14.5px;color:var(--ink-2);
    border-left:2px solid transparent;transition:.2s;
  }
  .toc-list a:hover{background:var(--brand-50);color:var(--brand);}
  .toc-list a.is-current{color:var(--brand);font-weight:600;background:var(--brand-50);border-left-color:var(--brand);}
  .toc-helper{
    margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);
    font-size:13px;color:var(--ink-3);line-height:1.85;
  }

  /* ---------- guide blocks ---------- */
  .guide-block{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:24px 20px;box-shadow:var(--shadow-1);margin-bottom:24px;
    scroll-margin-top:88px;
  }
  @media (min-width:768px){ .guide-block{padding:30px 28px;} }
  .block-title{
    position:relative;padding-left:14px;
    font-size:22px;line-height:1.4;font-weight:600;
  }
  @media (min-width:768px){ .block-title{font-size:26px;} }
  .block-title::before{
    content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:4px;background:var(--brand);
  }
  .block-lead{margin-top:16px;color:var(--ink-2);font-size:15.5px;}
  .guide-block p + p{margin-top:14px;}

  .point-list{margin-top:20px;display:grid;gap:14px;}
  .point-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink-2);}
  .point-num{
    flex:0 0 28px;height:28px;border-radius:9px;background:var(--brand-50);color:var(--brand);
    display:grid;place-items:center;font-size:13.5px;font-weight:700;
    font-variant-numeric:tabular-nums;margin-top:2px;
  }
  .point-list strong{color:var(--ink);font-weight:600;}

  .table-wrap{margin-top:20px;border:1px solid var(--line);border-radius:14px;overflow-x:auto;}
  .spec-table{width:100%;border-collapse:collapse;min-width:600px;font-size:14.5px;}
  .spec-table thead th{
    background:var(--brand-50);color:var(--brand);text-align:left;
    font-weight:600;font-size:13.5px;padding:12px 16px;white-space:nowrap;
  }
  .spec-table tbody th{
    text-align:left;font-weight:600;color:var(--ink);padding:13px 16px;
    border-top:1px solid var(--line);white-space:nowrap;background:#fff;
  }
  .spec-table td{
    padding:13px 16px;border-top:1px solid var(--line);color:var(--ink-2);vertical-align:top;
  }
  .spec-table tbody tr{transition:background-color .18s ease;}
  .spec-table tbody tr:hover{background:var(--brand-50);}
  .num{font-variant-numeric:tabular-nums;}

  .figure{margin-top:22px;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;}
  .figure img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--brand-50);}
  .figure figcaption{padding:10px 16px;font-size:12.5px;color:var(--ink-3);border-top:1px solid var(--line);}

  .block-cta{
    margin-top:24px;padding-top:20px;border-top:1px dashed var(--line);
    display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  }
  .cta-note{font-size:13.5px;color:var(--ink-3);}

  .mini-cards{margin-top:20px;display:grid;gap:14px;grid-template-columns:1fr;}
  @media (min-width:768px){ .mini-cards{grid-template-columns:repeat(2,1fr);} }
  .mini-card{
    border:1px solid var(--line);border-radius:14px;padding:16px 18px;background:#fff;
    transition:.2s;
  }
  .mini-card:hover{background:var(--brand-50);border-color:#CFE0FA;transform:translateY(-2px);}
  .mini-card h4{font-size:15.5px;font-weight:600;color:var(--ink);}
  .mini-card p{margin-top:8px;font-size:14px;color:var(--ink-2);line-height:1.75;}

  /* ---------- FAQ ---------- */
  .faq-list{margin-top:20px;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
    transition:border-color .2s ease;
  }
  .faq-item + .faq-item{margin-top:12px;}
  .faq-item.is-open{border-color:#CFE0FA;box-shadow:0 10px 24px -18px rgba(27,79,156,.5);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:17px 20px;background:#fff;border:0;text-align:left;cursor:pointer;
    font-size:15.5px;font-weight:600;color:var(--ink);transition:.2s;
  }
  .faq-q:hover{color:var(--brand);}
  .faq-item.is-open .faq-q{color:var(--brand);box-shadow:inset 3px 0 0 var(--brand);}
  .faq-icon{color:var(--ink-3);transition:transform .25s ease;font-size:14px;}
  .faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--brand);}
  .faq-a{display:none;padding:0 20px 18px;font-size:14.5px;color:var(--ink-2);line-height:1.85;}
  .faq-item.is-open .faq-a{display:block;}

  /* ---------- bottom CTA ---------- */
  .cta-card{
    margin-top:48px;background:var(--brand-50);border:1px solid #DCE8FB;border-radius:24px;
    padding:28px 24px;display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;
  }
  @media (min-width:1024px){ .cta-card{padding:38px 40px;margin-top:72px;} }
  .cta-card h2{font-size:22px;font-weight:600;line-height:1.4;}
  @media (min-width:768px){ .cta-card h2{font-size:26px;} }
  .cta-card p{margin-top:10px;font-size:15px;color:var(--ink-2);max-width:560px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

  /* ---------- footer ---------- */
  .site-footer{background:var(--bg);border-top:1px solid var(--line);margin-top:56px;padding:44px 0 24px;}
  @media (min-width:1024px){ .site-footer{margin-top:80px;padding:56px 0 26px;} }
  .footer-grid{display:grid;grid-template-columns:1fr;gap:28px;}
  @media (min-width:640px){ .footer-grid{grid-template-columns:repeat(2,1fr);} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;} }
  .footer-brand{display:flex;align-items:center;gap:10px;}
  .footer-desc{margin-top:14px;font-size:13.5px;color:var(--ink-3);line-height:1.9;max-width:320px;}
  .footer-title{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:12px;}
  .footer-links{display:flex;flex-direction:column;gap:9px;}
  .footer-links a{font-size:13.5px;color:var(--ink-2);transition:color .2s ease;}
  .footer-links a:hover{color:var(--brand-600);}
  .footer-contact{font-size:13.5px;color:var(--ink-2);line-height:1.9;}
  .footer-bottom{
    margin-top:34px;padding-top:18px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;
    font-size:13px;color:var(--ink-3);
  }
  @media (max-width:639px){
    .brand-sub{display:none;}
    .hero-sub{font-size:15.5px;}
  }

/* roulang page: category1 */
:root{
  --brand:#1B4F9C;
  --brand-600:#2F6FE0;
  --brand-50:#EFF5FF;
  --accent:#F2994A;
  --ink:#0F1B2D;
  --ink-2:#55637A;
  --ink-3:#8A98AD;
  --line:#E5EBF3;
  --bg:#F8FAFD;
  --card:#FFFFFF;
  --radius-card:18px;
  --radius-sm:10px;
  --radius-hero:22px;
  --shadow-card:0 1px 2px rgba(15,27,45,.04), 0 12px 28px -12px rgba(27,79,156,.16);
  --shadow-lift:0 18px 40px -16px rgba(27,79,156,.28);
  --space-section:44px;
}
@media (min-width:1024px){ :root{ --space-section:88px; } }

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
ul,ol{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4,p{ margin:0; }
:focus-visible{ outline:3px solid rgba(27,79,156,.4); outline-offset:2px; border-radius:6px; }
.tnum{ font-variant-numeric:tabular-nums; }

.container{ width:100%; max-width:1200px; margin:0 auto; padding:0 20px; }
@media (min-width:1024px){ .container{ padding:0 32px; } }

/* ============ 导航 ============ */
.site-header{
  position:sticky; top:0; z-index:60;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--line);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; gap:16px; height:56px; }
@media (min-width:1024px){ .header-inner{ height:64px; } }
.brand{ display:flex; align-items:center; gap:10px; }
.brand-badge{
  width:38px; height:38px; flex:0 0 38px; border-radius:12px;
  background:var(--brand); color:#fff;
  display:grid; place-items:center;
  font-size:14px; font-weight:700; letter-spacing:.04em;
}
.brand-text{ display:flex; flex-direction:column; line-height:1.25; }
.brand-name{ font-size:16px; font-weight:600; color:var(--ink); }
.brand-sub{ font-size:12px; color:var(--ink-3); }
.nav-desktop{ display:none; align-items:center; gap:4px; }
@media (min-width:1024px){ .nav-desktop{ display:flex; } }
.nav-link{
  position:relative; padding:8px 14px; border-radius:8px;
  font-size:15px; color:var(--ink-2);
  transition:background .2s ease, color .2s ease;
}
.nav-link:hover{ background:var(--brand-50); color:var(--brand); }
.nav-link.is-active{ color:var(--brand); font-weight:600; }
.nav-link.is-active::after{
  content:""; position:absolute; left:14px; right:14px; bottom:1px;
  height:2px; border-radius:2px; background:var(--brand);
}
.header-actions{ display:flex; align-items:center; gap:10px; }
.menu-btn{
  display:grid; place-items:center;
  width:40px; height:40px; border-radius:10px;
  border:1px solid var(--line); background:#fff; color:var(--ink);
  transition:background .2s ease, color .2s ease, border-color .2s ease;
}
.menu-btn:hover{ background:var(--brand-50); color:var(--brand); border-color:#D6E4FA; }
@media (min-width:1024px){ .menu-btn{ display:none; } }
.header-cta{ display:none; }
@media (min-width:768px){ .header-cta{ display:inline-flex; } }

.mobile-drawer{
  position:fixed; inset:0; z-index:80; background:#fff;
  padding:20px; display:none; flex-direction:column; gap:6px;
}
.mobile-drawer.is-open{ display:flex; }
.drawer-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:14px; }
.drawer-close{
  width:40px; height:40px; border-radius:10px; border:1px solid var(--line);
  display:grid; place-items:center; background:#fff;
}
.drawer-link{
  padding:14px 16px; border-radius:12px; font-size:17px; color:var(--ink-2);
  border:1px solid transparent;
}
.drawer-link:hover{ background:var(--brand-50); color:var(--brand); }
.drawer-link.is-active{ background:var(--brand-50); color:var(--brand); font-weight:600; }
.drawer-cta{ margin-top:16px; }

/* ============ 按钮 ============ */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  border-radius:999px; padding:12px 24px;
  font-size:15px; font-weight:600; line-height:1.2;
  transition:background .2s ease, color .2s ease, box-shadow .2s ease, transform .2s ease, border-color .2s ease;
  border:1px solid transparent; white-space:nowrap;
}
.btn-primary{ background:var(--brand); color:#fff; box-shadow:0 10px 22px -12px rgba(27,79,156,.7); }
.btn-primary:hover{ background:var(--brand-600); transform:translateY(1px); box-shadow:0 12px 26px -12px rgba(47,111,224,.75); }
.btn-ghost{ background:#fff; color:var(--ink); border-color:var(--line); }
.btn-ghost:hover{ background:var(--brand-50); color:var(--brand); border-color:#D6E4FA; }
.btn-sm{ padding:9px 18px; font-size:14px; }
.btn-link{ display:inline-flex; align-items:center; gap:6px; color:var(--brand-600); font-size:15px; font-weight:600; }
.btn-link i{ transition:transform .2s ease; }
.btn-link:hover{ color:var(--brand); }
.btn-link:hover i{ transform:translateX(4px); }

/* ============ 分类页头 ============ */
.cat-hero{ position:relative; overflow:hidden; border-bottom:1px solid var(--line); }
.cat-hero-bg{
  position:absolute; inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover; background-position:center;
}
.cat-hero-veil{
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(255,255,255,.92) 0%, rgba(255,255,255,.78) 62%, rgba(248,250,253,.96) 100%);
}
.cat-hero-inner{ position:relative; padding:32px 0 28px; }
@media (min-width:1024px){ .cat-hero-inner{ padding:52px 0 44px; } }
.breadcrumb{ display:flex; align-items:center; gap:8px; font-size:13px; color:var(--ink-3); margin-bottom:14px; }
.breadcrumb a:hover{ color:var(--brand-600); }
.breadcrumb .sep{ color:#C4CFDF; }
.page-title{
  font-size:clamp(28px,4.2vw,48px); line-height:1.2; font-weight:600;
  letter-spacing:-.01em; max-width:900px;
}
.page-sub{ margin-top:16px; max-width:760px; font-size:16px; line-height:1.85; color:var(--ink-2); }
.filter-row{ display:flex; flex-wrap:wrap; gap:10px; margin-top:24px; }
.filter-chip{
  display:inline-flex; align-items:center; gap:6px;
  padding:8px 16px; border-radius:999px;
  background:#fff; border:1px solid var(--line);
  font-size:14px; color:var(--ink-2);
  transition:all .2s ease;
}
.filter-chip:hover{ border-color:#D6E4FA; background:var(--brand-50); color:var(--brand); }
.filter-chip.is-on{ background:var(--brand); border-color:var(--brand); color:#fff; font-weight:600; }

/* ============ 板块通用 ============ */
.section{ padding:var(--space-section) 0; }
.section-tight{ padding:28px 0; }
@media (min-width:1024px){ .section-tight{ padding:44px 0; } }
.sec-head{ display:flex; align-items:flex-end; justify-content:space-between; gap:16px; margin-bottom:24px; flex-wrap:wrap; }
.sec-title{
  position:relative; padding-left:14px;
  font-size:clamp(22px,2.6vw,30px); line-height:1.35; font-weight:600;
}
.sec-title::before{
  content:""; position:absolute; left:0; top:.22em; bottom:.22em;
  width:4px; border-radius:2px; background:var(--brand);
}
.sec-desc{ padding-left:14px; margin-top:8px; font-size:15px; color:var(--ink-2); max-width:720px; }
.count-pill{
  display:inline-flex; align-items:center; padding:4px 12px; border-radius:999px;
  background:var(--brand-50); color:var(--brand); font-size:13px; font-weight:600;
}

/* ============ 数据条 ============ */
.stat-grid{
  display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px;
  background:#fff; border:1px solid var(--line); border-radius:var(--radius-card);
  padding:18px; box-shadow:var(--shadow-card);
}
@media (min-width:768px){ .stat-grid{ grid-template-columns:repeat(4,minmax(0,1fr)); gap:0; padding:22px 8px; } }
.stat-item{ padding:8px 14px; }
@media (min-width:768px){
  .stat-item + .stat-item{ border-left:1px solid var(--line); }
}
.stat-num{ font-size:clamp(22px,3vw,30px); font-weight:600; color:var(--brand); line-height:1.2; }
.stat-label{ font-size:13px; color:var(--ink-3); margin-top:4px; }

/* ============ 片段卡片 ============ */
.clip-grid{ display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px; }
@media (min-width:640px){ .clip-grid{ grid-template-columns:repeat(3,minmax(0,1fr)); gap:18px; } }
@media (min-width:1024px){ .clip-grid{ grid-template-columns:repeat(4,minmax(0,1fr)); gap:20px; } }
.clip-card{
  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;
}
.clip-card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-lift); }
.clip-media{
  position:relative; display:block; aspect-ratio:9/16;
  background:var(--brand-50); overflow:hidden;
}
.clip-media img{ width:100%; height:100%; object-fit:cover; transition:transform .35s ease; }
.clip-card:hover .clip-media img{ transform:scale(1.04); }
.tag-corner{
  position:absolute; top:10px; right:10px;
  padding:3px 10px; border-radius:999px;
  background:rgba(255,255,255,.95); color:var(--brand);
  font-size:12px; font-weight:600;
}
.tag-corner.is-hot{ background:var(--accent); color:#fff; }
.dur-pill,.view-pill{
  position:absolute; bottom:10px;
  padding:3px 9px; border-radius:999px;
  background:rgba(15,27,45,.62); color:#fff;
  font-size:12px; line-height:1.6;
  display:inline-flex; align-items:center; gap:4px;
}
.dur-pill{ left:10px; }
.view-pill{ right:10px; }
.play-orb{
  position:absolute; left:50%; top:50%; transform:translate(-50%,-50%) scale(.9);
  width:52px; height:52px; border-radius:50%;
  background:rgba(255,255,255,.94); color:var(--brand);
  display:grid; place-items:center; font-size:16px;
  opacity:0; transition:opacity .2s ease, transform .2s ease;
}
.clip-card:hover .play-orb{ opacity:1; transform:translate(-50%,-50%) scale(1); }
.clip-body{ padding:14px 16px 16px; }
.clip-title{
  font-size:15px; font-weight:600; line-height:1.55; color:var(--ink);
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
  min-height:46px;
}
.clip-meta{ display:flex; align-items:center; justify-content:space-between; gap:8px; margin-top:10px; font-size:13px; color:var(--ink-3); }
.chip{
  display:inline-flex; align-items:center;
  padding:3px 10px; border-radius:10px;
  background:var(--brand-50); color:var(--brand);
  font-size:12px; font-weight:600;
}

/* ============ 分页 ============ */
.pager{ display:flex; align-items:center; justify-content:center; gap:8px; flex-wrap:wrap; margin-top:32px; }
.page-btn{
  min-width:40px; height:40px; padding:0 12px;
  display:inline-flex; align-items:center; justify-content:center;
  border-radius:10px; border:1px solid var(--line); background:#fff;
  font-size:14px; color:var(--ink-2); transition:all .2s ease;
}
.page-btn:hover{ background:var(--brand-50); color:var(--brand); border-color:#D6E4FA; }
.page-btn.is-on{ background:var(--brand); border-color:var(--brand); color:#fff; font-weight:600; }
.page-btn.is-disabled{ color:#C4CFDF; }
.pager-tip{ width:100%; text-align:center; font-size:13px; color:var(--ink-3); margin-top:10px; }

/* ============ 场景入口 ============ */
.scene-grid{ display:grid; grid-template-columns:repeat(1,minmax(0,1fr)); gap:14px; }
@media (min-width:640px){ .scene-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); } }
@media (min-width:1024px){ .scene-grid{ grid-template-columns:repeat(3,minmax(0,1fr)); gap:18px; } }
.scene-item{
  display:flex; gap:14px; align-items:flex-start;
  background:#fff; border:1px solid var(--line); border-radius:var(--radius-card);
  padding:18px 20px; box-shadow:var(--shadow-card);
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.scene-item:hover{ transform:translateY(-4px); box-shadow:var(--shadow-lift); border-color:#D6E4FA; }
.scene-ico{
  width:44px; height:44px; flex:0 0 44px; border-radius:12px;
  background:var(--brand-50); color:var(--brand);
  display:grid; place-items:center; font-size:17px;
}
.scene-name{ font-size:17px; font-weight:600; color:var(--ink); }
.scene-text{ font-size:14px; color:var(--ink-2); margin-top:4px; line-height:1.7; }
.scene-tags{ display:flex; flex-wrap:wrap; gap:6px; margin-top:10px; }
.mini-tag{
  padding:2px 9px; border-radius:999px; font-size:12px;
  background:var(--bg); border:1px solid var(--line); color:var(--ink-3);
}

/* ============ 行式清单 ============ */
.list-block{ background:#fff; border:1px solid var(--line); border-radius:var(--radius-card); box-shadow:var(--shadow-card); overflow:hidden; }
.list-row{
  display:flex; gap:16px; align-items:flex-start;
  padding:20px 22px; border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.list-row:last-child{ border-bottom:0; }
.list-row:hover{ background:var(--brand-50); }
.list-num{
  font-size:20px; font-weight:600; color:var(--brand); line-height:1.3;
  font-variant-numeric:tabular-nums; min-width:34px;
}
.list-title{ font-size:17px; font-weight:600; color:var(--ink); }
.list-text{ font-size:14px; color:var(--ink-2); margin-top:6px; line-height:1.75; }
.list-arrow{ margin-left:auto; color:var(--ink-3); align-self:center; transition:transform .2s ease, color .2s ease; }
.list-row:hover .list-arrow{ transform:translateX(4px); color:var(--brand); }

/* ============ FAQ ============ */
.faq-list{ display:grid; gap:12px; }
.faq-item{
  background:#fff; border:1px solid var(--line); border-radius:14px;
  overflow:hidden; position:relative; transition:border-color .2s ease, box-shadow .2s ease;
}
.faq-item::before{
  content:""; position:absolute; left:0; top:0; bottom:0; width:0;
  background:var(--brand); transition:width .2s ease;
}
.faq-item.is-open{ box-shadow:var(--shadow-card); }
.faq-item.is-open::before{ width:3px; }
.faq-q{
  width:100%; display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding:18px 22px; text-align:left;
  font-size:16px; font-weight:600; color:var(--ink);
}
.faq-item.is-open .faq-q{ color:var(--brand); }
.faq-icon{ color:var(--ink-3); transition:transform .2s ease, color .2s ease; font-size:14px; }
.faq-item.is-open .faq-icon{ transform:rotate(45deg); color:var(--brand); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .28s ease; }
.faq-item.is-open .faq-a{ max-height:340px; }
.faq-a-inner{ padding:0 22px 20px; font-size:15px; color:var(--ink-2); line-height:1.85; }

/* ============ CTA ============ */
.cta-card{
  background:var(--brand-50); border-radius:24px;
  padding:28px 24px; display:flex; flex-direction:column; gap:20px;
  border:1px solid #DFEAFB;
}
@media (min-width:1024px){
  .cta-card{ flex-direction:row; align-items:center; justify-content:space-between; padding:40px 44px; }
}
.cta-title{ font-size:clamp(22px,2.6vw,28px); font-weight:600; line-height:1.35; }
.cta-text{ font-size:15px; color:var(--ink-2); margin-top:10px; max-width:640px; }
.cta-actions{ display:flex; flex-wrap:wrap; gap:12px; }

/* ============ 页脚 ============ */
.site-footer{ background:var(--bg); border-top:1px solid var(--line); margin-top:8px; }
.footer-grid{ display:grid; grid-template-columns:1fr; gap:28px; padding:44px 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 1.2fr; gap:32px; padding:56px 0 40px; } }
.footer-brand{ display:flex; align-items:center; gap:10px; margin-bottom:14px; }
.footer-desc{ font-size:13px; line-height:1.9; color:var(--ink-2); max-width:320px; }
.footer-title{ font-size:14px; font-weight:600; color:var(--ink); margin-bottom:14px; }
.footer-links{ display:flex; flex-direction:column; gap:10px; }
.footer-links a{ font-size:13px; line-height:1.9; color:var(--ink-2); transition:color .2s ease; }
.footer-links a:hover{ color:var(--brand-600); }
.footer-contact{ font-size:13px; line-height:1.9; color:var(--ink-2); }
.footer-bottom{
  border-top:1px solid var(--line); padding:18px 0 26px;
  display:flex; flex-wrap:wrap; gap:10px 20px; justify-content:space-between;
  font-size:13px; color:var(--ink-3);
}