/* roulang page: index */
:root{
  --brand-900:#0B2C4D;--brand-700:#14539A;--brand-500:#1A6ABF;--brand-100:#E4EEF9;
  --accent-600:#12A594;--warm-500:#E8A33D;
  --ink-900:#0E1B2A;--ink-600:#4A5B70;--ink-400:#8296AB;
  --bg-page:#F6F8FB;--surface:#FFFFFF;--line:#E3E9F2;--line-strong:#CFDAE8;
  --radius-card:16px;--radius-sm:12px;--radius-btn:10px;
  --shadow-card:0 1px 2px rgba(14,27,42,.04),0 8px 24px rgba(20,83,154,.06);
  --shadow-card-hover:0 2px 4px rgba(14,27,42,.06),0 16px 36px rgba(20,83,154,.12);
  --shadow-float:0 6px 20px rgba(14,27,42,.08);
  --t:all .22s cubic-bezier(.4,0,.2,1);
  --sec-y:56px;
}
@media(min-width:768px){:root{--sec-y:72px}}
@media(min-width:1024px){:root{--sec-y:96px}}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-page);color:var(--ink-900);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:var(--t)}
button,input,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px}
.num{font-variant-numeric:tabular-nums;font-family:Inter,ui-sans-serif,system-ui,-apple-system,sans-serif}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media(min-width:1024px){.container{padding-left:32px;padding-right:32px}}

.section{padding-top:var(--sec-y);padding-bottom:var(--sec-y)}
.section-tight{padding-top:calc(var(--sec-y) * .62);padding-bottom:calc(var(--sec-y) * .62)}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px}
.sec-title{position:relative;padding-left:14px;font-size:clamp(22px,2.4vw,32px);font-weight:700}
.sec-title::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:24px;border-radius:2px;background:var(--accent-600)}
.sec-sub{margin-top:8px;color:var(--ink-600);font-size:14px;max-width:720px}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:50;background:var(--surface);border-bottom:1px solid var(--line);transition:var(--t)}
.site-header.is-scrolled{box-shadow:var(--shadow-float)}
.nav-row{display:flex;align-items:center;justify-content:space-between;gap:16px;height:68px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(140deg,var(--brand-700),var(--brand-500));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:14px;letter-spacing:.5px;box-shadow:0 4px 12px rgba(20,83,154,.28)}
.logo-text{font-size:17px;font-weight:800;color:var(--brand-900);white-space:nowrap}
.logo-text small{display:block;font-size:11px;font-weight:500;color:var(--ink-400);letter-spacing:.4px;line-height:1.2}

.chip-nav{display:none;align-items:center;gap:8px}
@media(min-width:1024px){.chip-nav{display:flex}}
.chip{display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink-600);font-size:14px;white-space:nowrap}
.chip:hover{border-color:var(--brand-500);color:var(--brand-700);background:#fff}
.chip.is-active{background:var(--brand-700);border-color:var(--brand-700);color:#fff;box-shadow:0 4px 12px rgba(20,83,154,.22)}

.nav-cta{display:none}
@media(min-width:768px){.nav-cta{display:inline-flex}}

.mobile-scroll-nav{display:flex;gap:8px;overflow-x:auto;padding:0 20px 12px;scrollbar-width:none;-ms-overflow-style:none}
.mobile-scroll-nav::-webkit-scrollbar{display:none}
@media(min-width:1024px){.mobile-scroll-nav{display:none}}

.burger{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid var(--line-strong);border-radius:12px;background:#fff;cursor:pointer}
@media(min-width:1024px){.burger{display:none}}

.drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:16px 20px 22px}
.drawer.is-open{display:block}
.drawer-chips{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.drawer-chips .chip{justify-content:flex-start;width:100%;height:44px;border-radius:12px}

/* ---------- 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;border:1px solid transparent;cursor:pointer;transition:var(--t)}
.btn svg{transition:transform .22s cubic-bezier(.4,0,.2,1)}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:0 4px 14px rgba(20,83,154,.24)}
.btn-primary:hover{background:var(--brand-500);transform:translateY(-1px);box-shadow:0 8px 22px rgba(20,83,154,.3)}
.btn-primary:hover svg{transform:translateX(2px)}
.btn-secondary{background:#fff;border-color:var(--line-strong);color:var(--ink-900)}
.btn-secondary:hover{border-color:var(--brand-700);color:var(--brand-700);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--brand-700);padding:0 4px;height:auto}
.btn-ghost:hover{color:var(--brand-500);text-decoration:underline;text-decoration-color:var(--accent-600);text-underline-offset:4px}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#EFF4FB 0%,var(--bg-page) 68%);padding-top:56px;padding-bottom:56px}
@media(min-width:1024px){.hero{padding-top:76px;padding-bottom:84px}}
.hero-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:6fr 6fr;gap:48px}}
.hero h1{font-size:clamp(28px,3.6vw,44px);font-weight:800;line-height:1.25;color:var(--brand-900)}
.hero h1 em{font-style:normal;color:var(--brand-700);position:relative}
.hero-sub{margin-top:18px;font-size:16px;color:var(--ink-600);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line)}
.metric-num{font-size:clamp(20px,2.2vw,26px);font-weight:800;color:var(--brand-700)}
.metric-label{font-size:13px;color:var(--ink-400);margin-top:2px}
.hero-visual{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);background:var(--bg-page);aspect-ratio:4/3}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,44,77,0) 40%,rgba(11,44,77,.45) 100%)}
.hero-visual-tag{position:absolute;left:18px;bottom:18px;right:18px;z-index:2;color:#fff}
.hero-visual-tag strong{display:block;font-size:17px;font-weight:700}
.hero-visual-tag span{font-size:13px;opacity:.86}

/* ---------- topic covers ---------- */
.topic-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.topic-grid{grid-template-columns:repeat(12,1fr)}}
.topic-card{position:relative;display:block;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);background:var(--brand-900);min-height:210px}
.topic-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover)}
.topic-card img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;transition:transform .5s cubic-bezier(.4,0,.2,1)}
.topic-card:hover img{transform:scale(1.03)}
.topic-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,44,77,.15),rgba(11,44,77,.78));transition:var(--t)}
.topic-card:hover::after{background:linear-gradient(180deg,rgba(11,44,77,.24),rgba(11,44,77,.86))}
.topic-body{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:flex-end;padding:22px;color:#fff}
.topic-body h3{font-size:19px;font-weight:700}
.topic-body p{font-size:13px;color:rgba(255,255,255,.86);margin-top:6px}
.topic-arrow{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13px;font-weight:600;color:#fff}
.topic-card:hover .topic-arrow svg{transform:translateX(3px)}
.topic-arrow svg{transition:transform .22s cubic-bezier(.4,0,.2,1)}
@media(min-width:768px){
  .topic-a{grid-column:span 5;min-height:330px}
  .topic-b{grid-column:span 4;min-height:330px}
  .topic-c{grid-column:span 3;min-height:330px}
}
@media(max-width:767px){.topic-card{min-height:200px}}

/* ---------- index list ---------- */
.index-list{border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;overflow:hidden;box-shadow:var(--shadow-card)}
.index-item{display:flex;align-items:center;gap:18px;padding:18px 22px;border-bottom:1px solid var(--line);transition:var(--t)}
.index-item:last-child{border-bottom:0}
.index-item:hover{background:rgba(228,238,249,.45)}
.index-item:hover .index-no{color:var(--accent-600)}
.index-no{font-size:15px;font-weight:800;color:var(--brand-700);width:34px;flex-shrink:0}
.index-main{flex:1;min-width:0}
.index-main h3{font-size:16px;font-weight:600}
.index-main p{font-size:13px;color:var(--ink-600);margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.count-badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600;white-space:nowrap}
.index-item .chev{color:var(--ink-400);flex-shrink:0}
.index-item:hover .chev{color:var(--brand-700)}
@media(min-width:1024px){.index-list{display:grid;grid-template-columns:1fr 1fr}}
@media(min-width:1024px){
  .index-item{border-bottom:1px solid var(--line);min-height:72px}
  .index-item:nth-child(odd){border-right:1px solid var(--line)}
  .index-item:nth-last-child(-n+2){border-bottom:0}
}

/* ---------- feature cards ---------- */
.feature-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:1024px){.feature-grid{grid-template-columns:7fr 5fr;align-items:stretch}}
.feature-side{display:grid;gap:24px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;transition:var(--t)}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover);border-color:var(--brand-100)}
.card-link{display:block;height:100%}
.card-cover{position:relative;overflow:hidden;background:var(--bg-page);aspect-ratio:16/9}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.4,0,.2,1)}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:20px 22px 22px}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600}
.badge-outline{border:1px solid var(--warm-500);color:var(--warm-500);background:transparent;font-weight:600}
.badge-accent{background:rgba(18,165,148,.1);color:var(--accent-600)}
.card-title{margin-top:12px;font-size:17px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card:hover .card-title{color:var(--brand-700)}
.card-desc{margin-top:8px;font-size:14px;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;font-size:13px;color:var(--ink-400)}
.card-lg .card-cover{aspect-ratio:16/10}
.card-lg .card-title{font-size:20px;-webkit-line-clamp:2}
.card-lg .card-desc{-webkit-line-clamp:3}
.card-sm{display:grid;grid-template-columns:1fr;height:100%}
@media(min-width:520px){.card-sm .card-link{display:grid;grid-template-columns:132px 1fr;align-items:stretch}}
@media(min-width:520px){.card-sm .card-cover{aspect-ratio:auto;height:100%}}
@media(min-width:520px){.card-sm .card-body{padding:16px 18px}}
@media(min-width:520px){.card-sm .card-title{margin-top:8px;font-size:15px}}
@media(min-width:520px){.card-sm .card-desc{-webkit-line-clamp:2;font-size:13px}}
@media(min-width:520px){.card-sm .card-meta{margin-top:10px}}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:640px){.steps{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-card);transition:var(--t)}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover);border-color:var(--brand-100)}
.step-no{width:32px;height:32px;border-radius:10px;background:var(--brand-100);color:var(--brand-700);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px}
.step h3{margin-top:14px;font-size:16px;font-weight:700}
.step p{margin-top:8px;font-size:14px;color:var(--ink-600)}

/* ---------- posts ---------- */
.filter-row{display:flex;gap:8px;overflow-x:auto;padding-bottom:14px;scrollbar-width:none;-ms-overflow-style:none}
.filter-row::-webkit-scrollbar{display:none}
.post-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:768px){.post-grid{grid-template-columns:1fr 1fr}}
.post-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;transition:var(--t);display:flex;flex-direction:column}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover);border-color:var(--brand-100)}
.post-card:hover .post-title{color:var(--brand-700)}
.post-cover{aspect-ratio:16/9;overflow:hidden;background:var(--bg-page)}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.4,0,.2,1)}
.post-card:hover .post-cover img{transform:scale(1.03)}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.post-title{margin-top:12px;font-size:17px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:var(--t)}
.post-desc{margin-top:8px;font-size:14px;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink-400)}
.empty-state{padding:48px 24px;text-align:center;background:#fff;border:1px dashed var(--line-strong);border-radius:var(--radius-card)}
.empty-state svg{color:var(--ink-400)}
.empty-state p{margin:14px 0 18px;color:var(--ink-600);font-size:15px}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:1024px){.faq-wrap{grid-template-columns:1fr 1fr;gap:16px 24px;align-items:start}}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--shadow-card);transition:var(--t);overflow:hidden}
.faq-item:hover{border-color:var(--brand-100)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;background:transparent;border:0;cursor:pointer;text-align:left;font-size:16px;font-weight:600;color:var(--ink-900)}
.faq-icon{flex-shrink:0;width:22px;height:22px;border-radius:50%;border:1px solid var(--line-strong);color:var(--brand-700);display:flex;align-items:center;justify-content:center;font-size:14px;line-height:1;transition:var(--t)}
.faq-item.is-open .faq-icon{background:var(--brand-700);border-color:var(--brand-700);color:#fff}
.faq-a{display:none;padding:0 20px 20px 24px;font-size:14px;color:var(--ink-600);border-left:2px solid transparent;position:relative}
.faq-a::before{content:"";position:absolute;left:4px;top:2px;bottom:18px;width:2px;background:var(--accent-600);border-radius:2px}
.faq-item.is-open .faq-a{display:block}

/* ---------- cta band ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:var(--radius-card);background:var(--brand-700);color:#fff;padding:32px 26px;box-shadow:var(--shadow-card)}
@media(min-width:768px){.cta-band{padding:40px 40px}}
.cta-band::after{content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;background:rgba(18,165,148,.22)}
.cta-inner{position:relative;z-index:2;display:flex;flex-direction:column;gap:22px}
@media(min-width:1024px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between}}
.cta-band h2{font-size:clamp(20px,2.2vw,28px);font-weight:700}
.cta-band p{margin-top:8px;font-size:14px;color:rgba(255,255,255,.86);max-width:520px}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.btn-white{background:#fff;color:var(--brand-700)}
.btn-white:hover{background:var(--brand-100);transform:translateY(-1px)}
.icon-btn{width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.4);background:rgba(255,255,255,.08);color:#fff;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:var(--t)}
.icon-btn:hover{background:rgba(255,255,255,.2);border-color:#fff;transform:translateY(-1px)}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.78);margin-top:var(--sec-y)}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:52px 0 36px}
@media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800}
.footer-brand .logo-mark{background:rgba(255,255,255,.12)}
.footer-about{margin-top:14px;font-size:13px;line-height:1.8;color:rgba(255,255,255,.66);max-width:280px}
.footer-col h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:13px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--accent-600);text-underline-offset:4px}
.footer-contact li{font-size:13px;color:rgba(255,255,255,.72);display:flex;gap:8px;align-items:flex-start}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;display:flex;flex-direction:column;gap:8px;font-size:12px;color:rgba(255,255,255,.55)}
@media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}

@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .card:hover,.post-card:hover,.topic-card:hover,.step:hover,.btn:hover{transform:none!important}
}

/* roulang page: article */
:root{
    --brand-900:#0B2C4D;
    --brand-700:#14539A;
    --brand-500:#1A6ABF;
    --brand-100:#E4EEF9;
    --accent-600:#12A594;
    --warm-500:#E8A33D;
    --ink-900:#0E1B2A;
    --ink-600:#4A5B70;
    --ink-400:#8296AB;
    --bg-page:#F6F8FB;
    --surface:#FFFFFF;
    --line:#E3E9F2;
    --line-strong:#CFDAE8;
    --radius-card:16px;
    --radius-sm:12px;
    --radius-btn:10px;
    --shadow-card:0 1px 2px rgba(14,27,42,.04), 0 8px 24px rgba(20,83,154,.06);
    --shadow-hover:0 2px 4px rgba(14,27,42,.06), 0 16px 36px rgba(20,83,154,.12);
    --shadow-bar:0 6px 20px rgba(14,27,42,.08);
    --ease:all .22s cubic-bezier(.4,0,.2,1);
    --font-sans:-apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  }

  *,*::before,*::after{ box-sizing:border-box; }

  html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }

  body.page-body{
    margin:0;
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.75;
    color:var(--ink-900);
    background:var(--bg-page);
    -webkit-font-smoothing:antialiased;
  }

  img{ display:block; max-width:100%; height:auto; }

  a{ color:var(--brand-700); text-decoration:none; }
  a:hover{ color:var(--brand-500); }

  button{ font-family:inherit; }

  :focus-visible{ outline:2px solid var(--brand-500); outline-offset:2px; border-radius:6px; }

  .num{ font-variant-numeric:tabular-nums; }

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding:0 20px;
  }
  @media (min-width:768px){ .container{ padding:0 24px; } }
  @media (min-width:1024px){ .container{ padding:0 32px; } }

  /* ---------- header ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:var(--surface);
    border-bottom:1px solid var(--line);
    transition:var(--ease);
  }
  .site-header.is-scrolled{ box-shadow:var(--shadow-bar); }

  .header-inner{
    display:flex;
    align-items:center;
    gap:16px;
    min-height:68px;
  }

  .logo{
    display:inline-flex;
    align-items:center;
    gap:10px;
    flex:0 0 auto;
    color:var(--brand-900);
    font-weight:800;
    font-size:17px;
    letter-spacing:0;
  }
  .logo:hover{ color:var(--brand-700); }
  .logo-mark{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:34px;
    height:34px;
    border-radius:10px;
    background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
    color:#fff;
    font-size:13px;
    font-weight:800;
    letter-spacing:.5px;
    box-shadow:0 6px 14px rgba(20,83,154,.24);
  }
  .logo-text{ white-space:nowrap; }

  .chip-nav{
    display:flex;
    align-items:center;
    gap:8px;
    flex:1 1 auto;
    min-width:0;
    overflow-x:auto;
    scrollbar-width:none;
    -ms-overflow-style:none;
    padding:4px 0;
  }
  .chip-nav::-webkit-scrollbar{ display:none; }

  .chip{
    display:inline-flex;
    align-items:center;
    height:36px;
    padding:0 16px;
    border-radius:999px;
    border:1px solid var(--line);
    background:var(--surface);
    color:var(--ink-600);
    font-size:14px;
    font-weight:500;
    white-space:nowrap;
    transition:var(--ease);
  }
  .chip:hover{
    border-color:var(--brand-500);
    color:var(--brand-700);
    background:var(--brand-100);
  }
  .chip.is-active{
    background:var(--brand-700);
    border-color:var(--brand-700);
    color:#fff;
    box-shadow:0 6px 14px rgba(20,83,154,.22);
  }
  .chip.is-active:hover{ background:var(--brand-500); border-color:var(--brand-500); color:#fff; }

  .header-actions{ display:flex; align-items:center; gap:10px; flex:0 0 auto; }

  .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:var(--ease);
    white-space:nowrap;
  }
  .btn svg{ transition:var(--ease); }
  .btn-primary{
    background:var(--brand-700);
    color:#fff;
    box-shadow:0 8px 18px rgba(20,83,154,.2);
  }
  .btn-primary:hover{
    background:var(--brand-500);
    color:#fff;
    transform:translateY(-1px);
  }
  .btn-primary:hover svg{ transform:translateX(2px); }
  .btn-outline{
    background:var(--surface);
    border-color:var(--line-strong);
    color:var(--ink-900);
  }
  .btn-outline:hover{
    border-color:var(--brand-700);
    color:var(--brand-700);
    transform:translateY(-1px);
  }
  .btn-ghost{
    background:transparent;
    color:var(--brand-700);
    padding:0 6px;
  }
  .btn-ghost:hover{ color:var(--brand-500); text-decoration:underline; }

  .nav-cta{ height:40px; font-size:14px; padding:0 18px; }

  .menu-toggle{
    display:none;
    width:44px;
    height:44px;
    align-items:center;
    justify-content:center;
    border:1px solid var(--line-strong);
    border-radius:var(--radius-btn);
    background:var(--surface);
    color:var(--brand-900);
    cursor:pointer;
    transition:var(--ease);
  }
  .menu-toggle:hover{ border-color:var(--brand-700); color:var(--brand-700); }

  .mobile-drawer{
    display:none;
    border-top:1px solid var(--line);
    background:var(--surface);
    padding:14px 0 20px;
  }
  .mobile-drawer.open{ display:block; }
  .mobile-drawer .drawer-list{
    display:flex;
    flex-direction:column;
    gap:8px;
    margin:0 0 16px;
    padding:0;
    list-style:none;
  }
  .mobile-drawer .chip{
    width:100%;
    height:44px;
    justify-content:flex-start;
    font-size:15px;
  }

  /* ---------- breadcrumb ---------- */
  .breadcrumb{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:8px;
    font-size:13px;
    color:var(--ink-400);
    padding:22px 0 0;
  }
  .breadcrumb a{ color:var(--ink-400); }
  .breadcrumb a:hover{ color:var(--brand-700); text-decoration:underline; }
  .breadcrumb .sep{ color:var(--line-strong); }
  .breadcrumb .current{
    color:var(--ink-900);
    max-width:60ch;
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
  }

  /* ---------- article hero ---------- */
  .article-hero{
    background:
      radial-gradient(120% 100% at 100% 0%, rgba(228,238,249,.9) 0%, rgba(246,248,251,0) 58%),
      var(--bg-page);
    padding-bottom:32px;
    border-bottom:1px solid var(--line);
  }

  .article-head-grid{
    display:grid;
    grid-template-columns:1fr auto;
    gap:24px;
    align-items:end;
    padding-top:20px;
  }

  .badge-cat{
    display:inline-flex;
    align-items:center;
    gap:6px;
    height:30px;
    padding:0 14px;
    border-radius:999px;
    background:var(--brand-100);
    color:var(--brand-700);
    font-size:13px;
    font-weight:600;
    margin-bottom:14px;
    transition:var(--ease);
  }
  .badge-cat:hover{ background:var(--brand-700); color:#fff; }

  .article-title{
    margin:0 0 18px;
    font-size:clamp(28px,3.6vw,44px);
    line-height:1.25;
    font-weight:800;
    color:var(--brand-900);
    letter-spacing:0;
    overflow-wrap:break-word;
  }

  .meta-row{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:8px 18px;
    font-size:14px;
    color:var(--ink-400);
  }
  .meta-row .dot{
    width:4px;
    height:4px;
    border-radius:50%;
    background:var(--line-strong);
  }

  .share-group{
    display:flex;
    align-items:center;
    gap:8px;
    padding-bottom:6px;
  }
  .icon-btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:42px;
    height:42px;
    border-radius:var(--radius-sm);
    border:1px solid var(--line-strong);
    background:var(--surface);
    color:var(--ink-600);
    cursor:pointer;
    transition:var(--ease);
  }
  .icon-btn:hover{
    border-color:var(--brand-500);
    color:var(--brand-700);
    background:var(--brand-100);
    transform:translateY(-1px);
  }
  .icon-btn.copied{ border-color:var(--accent-600); color:var(--accent-600); background:#E7F7F4; }

  /* ---------- article body ---------- */
  .article-main{ padding:36px 0 8px; }

  .article-card{
    max-width:920px;
    margin:0 auto;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    padding:28px 22px;
  }
  @media (min-width:768px){ .article-card{ padding:36px 34px; } }
  @media (min-width:1024px){ .article-card{ padding:40px 44px; } }

  .article-content{
    max-width:760px;
    margin:0 auto;
    font-size:16px;
    line-height:1.75;
    color:var(--ink-900);
    overflow-wrap:break-word;
  }
  @media (max-width:640px){ .article-content{ font-size:15px; } }

  .article-content > *:first-child{ margin-top:0; }
  .article-content p{ margin:0 0 1.25em; }
  .article-content strong{ font-weight:700; color:var(--brand-900); }

  .article-content h2{
    position:relative;
    margin:1.8em 0 .8em;
    padding-left:14px;
    font-size:clamp(22px,2.4vw,28px);
    line-height:1.3;
    font-weight:700;
    color:var(--brand-900);
  }
  .article-content h2::before{
    content:"";
    position:absolute;
    left:0;
    top:.16em;
    bottom:.16em;
    width:4px;
    border-radius:2px;
    background:var(--accent-600);
  }
  .article-content h3{
    margin:1.4em 0 .6em;
    font-size:19px;
    line-height:1.4;
    font-weight:600;
    color:var(--brand-900);
  }
  .article-content h4{
    margin:1.2em 0 .5em;
    font-size:16px;
    font-weight:600;
    color:var(--ink-900);
  }

  .article-content ul,
  .article-content ol{
    margin:0 0 1.25em 1.2em;
    padding:0;
  }
  .article-content li{ margin:.4em 0; }
  .article-content li::marker{ color:var(--accent-600); }

  .article-content blockquote{
    margin:1.4em 0;
    padding:16px 20px;
    background:var(--brand-100);
    border-left:4px solid var(--brand-700);
    border-radius:0 12px 12px 0;
    color:var(--ink-600);
  }
  .article-content blockquote p:last-child{ margin-bottom:0; }

  .article-content img{
    width:100%;
    border-radius:12px;
    margin:1.4em 0;
  }
  .article-content figcaption{
    margin-top:-.6em;
    margin-bottom:1.4em;
    font-size:13px;
    line-height:1.6;
    color:var(--ink-400);
    text-align:center;
  }

  .article-content a{
    color:var(--brand-700);
    text-decoration:underline;
    text-underline-offset:3px;
  }
  .article-content a:hover{ color:var(--brand-500); }

  .article-content hr{
    border:0;
    border-top:1px solid var(--line);
    margin:2em 0;
  }

  .article-content table{
    width:100%;
    border-collapse:collapse;
    margin:1.4em 0;
    font-size:15px;
  }
  .article-content th,
  .article-content td{
    border:1px solid var(--line);
    padding:10px 12px;
    text-align:left;
    vertical-align:top;
  }
  .article-content th{
    background:var(--bg-page);
    font-weight:600;
    color:var(--brand-900);
  }

  .article-content code{
    padding:2px 6px;
    border-radius:6px;
    background:var(--bg-page);
    border:1px solid var(--line);
    font-family:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size:.92em;
  }
  .article-content pre{
    margin:1.4em 0;
    padding:16px 18px;
    border-radius:12px;
    background:#0E1B2A;
    color:#E4EEF9;
    overflow-x:auto;
    font-size:14px;
    line-height:1.7;
  }
  .article-content pre code{
    background:transparent;
    border:0;
    padding:0;
    color:inherit;
  }

  .empty-state{
    max-width:760px;
    margin:0 auto;
    text-align:center;
    padding:36px 0 28px;
  }
  .empty-state h2{
    margin:0 0 12px;
    font-size:24px;
    font-weight:700;
    color:var(--brand-900);
  }
  .empty-state p{
    margin:0 auto 24px;
    max-width:520px;
    color:var(--ink-600);
    font-size:15px;
  }

  /* ---------- tags ---------- */
  .tag-row{
    max-width:920px;
    margin:24px auto 0;
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:10px;
  }
  .tag-row .label{
    font-size:13px;
    color:var(--ink-400);
    margin-right:2px;
  }
  .tag{
    display:inline-flex;
    align-items:center;
    height:32px;
    padding:0 14px;
    border-radius:999px;
    border:1px solid var(--line);
    background:var(--surface);
    color:var(--ink-600);
    font-size:13px;
    transition:var(--ease);
  }
  .tag:hover{
    border-color:var(--brand-500);
    color:var(--brand-700);
    background:var(--brand-100);
  }

  /* ---------- sections ---------- */
  .section{ padding:56px 0 0; }
  @media (min-width:768px){ .section{ padding:72px 0 0; } }
  @media (min-width:1024px){ .section{ padding:88px 0 0; } }

  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:16px;
    margin-bottom:24px;
  }
  .section-title{
    position:relative;
    margin:0;
    padding-left:14px;
    font-size:clamp(22px,2.4vw,30px);
    line-height:1.3;
    font-weight:700;
    color:var(--brand-900);
  }
  .section-title::before{
    content:"";
    position:absolute;
    left:0;
    top:.18em;
    bottom:.18em;
    width:4px;
    border-radius:2px;
    background:var(--accent-600);
  }
  .section-sub{
    margin:8px 0 0 14px;
    font-size:14px;
    color:var(--ink-600);
  }

  /* ---------- continue / related cards ---------- */
  .card-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:20px;
  }
  @media (min-width:640px){ .card-grid{ grid-template-columns:repeat(2,1fr); } }
  @media (min-width:1024px){ .card-grid{ grid-template-columns:repeat(3,1fr); gap:24px; } }

  .card{
    display:flex;
    flex-direction:column;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    overflow:hidden;
    box-shadow:var(--shadow-card);
    transition:var(--ease);
    color:inherit;
  }
  .card:hover{
    transform:translateY(-3px);
    border-color:var(--brand-100);
    box-shadow:var(--shadow-hover);
  }
  .card:hover .card-title{ color:var(--brand-700); }

  .card-media{
    position:relative;
    aspect-ratio:16/9;
    background:var(--bg-page);
    overflow:hidden;
  }
  .card-media img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:var(--ease);
  }
  .card:hover .card-media img{ transform:scale(1.04); }

  .card-body{
    padding:20px 20px 18px;
    display:flex;
    flex-direction:column;
    gap:10px;
    flex:1 1 auto;
  }
  .card-title{
    margin:0;
    font-size:17px;
    line-height:1.45;
    font-weight:600;
    color:var(--ink-900);
    transition:var(--ease);
  }
  .card-desc{
    margin:0;
    font-size:14px;
    line-height:1.7;
    color:var(--ink-600);
    display:-webkit-box;
    -webkit-line-clamp:3;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .card-foot{
    margin-top:auto;
    padding-top:12px;
    border-top:1px solid var(--line);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:10px;
    font-size:13px;
    color:var(--ink-400);
  }
  .card-foot .more{
    color:var(--brand-700);
    font-weight:600;
  }

  .mini-badge{
    display:inline-flex;
    align-items:center;
    height:26px;
    padding:0 12px;
    border-radius:999px;
    background:var(--brand-100);
    color:var(--brand-700);
    font-size:12px;
    font-weight:600;
    align-self:flex-start;
  }
  .mini-badge.official{
    background:transparent;
    border:1px solid var(--warm-500);
    color:var(--warm-500);
  }

  /* ---------- cta band ---------- */
  .cta-band{
    margin-top:56px;
    background:linear-gradient(120deg,var(--brand-900) 0%,var(--brand-700) 100%);
    border-radius:var(--radius-card);
    padding:28px 24px;
    display:grid;
    grid-template-columns:1fr;
    gap:22px;
    align-items:center;
    box-shadow:0 18px 40px rgba(11,44,77,.18);
  }
  @media (min-width:768px){
    .cta-band{ grid-template-columns:1.4fr auto; padding:32px 36px; margin-top:72px; }
  }
  @media (min-width:1024px){ .cta-band{ margin-top:88px; } }

  .cta-band h2{
    margin:0 0 8px;
    font-size:clamp(20px,2.2vw,26px);
    font-weight:700;
    color:#fff;
  }
  .cta-band p{
    margin:0;
    font-size:14px;
    line-height:1.7;
    color:rgba(255,255,255,.78);
    max-width:56ch;
  }
  .cta-actions{
    display:flex;
    align-items:center;
    gap:12px;
    flex-wrap:wrap;
  }
  .btn-light{
    background:#fff;
    color:var(--brand-900);
  }
  .btn-light:hover{ background:var(--brand-100); color:var(--brand-900); }
  .share-mini{
    display:inline-flex;
    align-items:center;
    gap:8px;
  }
  .share-mini .icon-btn{
    background:rgba(255,255,255,.1);
    border-color:rgba(255,255,255,.28);
    color:#fff;
  }
  .share-mini .icon-btn:hover{
    background:rgba(255,255,255,.2);
    border-color:#fff;
    color:#fff;
  }

  .back-row{
    display:flex;
    justify-content:center;
    margin-top:32px;
  }

  /* ---------- footer ---------- */
  .site-footer{
    margin-top:72px;
    background:var(--brand-900);
    color:rgba(255,255,255,.72);
    padding:56px 0 0;
  }
  @media (min-width:1024px){ .site-footer{ margin-top:96px; padding-top:64px; } }

  .footer-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:32px;
    padding-bottom:36px;
  }
  @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; gap:40px; } }

  .footer-brand{
    display:flex;
    align-items:center;
    gap:10px;
    color:#fff;
    font-size:18px;
    font-weight:800;
    margin-bottom:14px;
  }
  .footer-brand .logo-mark{
    background:rgba(255,255,255,.12);
    box-shadow:none;
    color:#fff;
  }
  .footer-about{
    margin:0;
    font-size:14px;
    line-height:1.8;
    color:rgba(255,255,255,.66);
    max-width:34ch;
  }

  .footer-col h3{
    margin:0 0 14px;
    font-size:15px;
    font-weight:700;
    color:#fff;
  }
  .footer-col ul{
    margin:0;
    padding:0;
    list-style:none;
    display:flex;
    flex-direction:column;
    gap:10px;
  }
  .footer-col a{
    font-size:14px;
    color:rgba(255,255,255,.7);
    transition:var(--ease);
  }
  .footer-col a:hover{ color:#fff; text-decoration:underline; }
  .footer-contact li{
    font-size:14px;
    line-height:1.7;
    color:rgba(255,255,255,.7);
    font-variant-numeric:tabular-nums;
  }

  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.12);
    padding:18px 0 24px;
    display:flex;
    flex-wrap:wrap;
    gap:8px 20px;
    align-items:center;
    justify-content:space-between;
    font-size:12px;
    color:rgba(255,255,255,.55);
  }

  /* ---------- responsive nav ---------- */
  @media (max-width:900px){
    .header-inner .chip-nav{ display:none; }
    .header-inner .nav-cta{ display:none; }
    .header-inner{ justify-content:space-between; gap:12px; }
    .menu-toggle{ display:inline-flex; }
  }
  @media (min-width:901px){
    .mobile-drawer{ display:none !important; }
  }

  @media (max-width:520px){
    .article-head-grid{ grid-template-columns:1fr; gap:14px; align-items:start; }
    .share-group{ padding-bottom:0; }
    .cta-actions{ width:100%; }
    .cta-actions .btn{ flex:1 1 auto; }
    .footer-bottom{ flex-direction:column; align-items:flex-start; }
  }

  @media (prefers-reduced-motion: reduce){
    *{ transition:none !important; animation:none !important; }
    .card:hover{ transform:none; }
    .btn:hover{ transform:none; }
  }

/* roulang page: category2 */
:root{
    --brand-900:#0B2C4D;
    --brand-700:#14539A;
    --brand-500:#1A6ABF;
    --brand-100:#E4EEF9;
    --accent-600:#12A594;
    --accent-100:#E2F6F3;
    --warm-500:#E8A33D;
    --ink-900:#0E1B2A;
    --ink-600:#4A5B70;
    --ink-400:#8296AB;
    --bg-page:#F6F8FB;
    --surface:#FFFFFF;
    --line:#E3E9F2;
    --line-strong:#CFDAE8;
    --radius-card:16px;
    --radius-sm:12px;
    --radius-btn:10px;
    --shadow-card:0 1px 2px rgba(14,27,42,.04), 0 8px 24px rgba(20,83,154,.06);
    --shadow-hover:0 2px 4px rgba(14,27,42,.06), 0 16px 36px rgba(20,83,154,.12);
    --shadow-bar:0 6px 20px rgba(14,27,42,.08);
    --ease:cubic-bezier(.4,0,.2,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body.site-body{
    margin:0;
    background:var(--bg-page);
    color:var(--ink-900);
    font-family:-apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
    font-size:16px;
    line-height:1.75;
    font-variant-numeric:tabular-nums;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;height:auto;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{list-style:none;padding:0;}
  button{font:inherit;color:inherit;}
  a{color:var(--brand-700);text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease);}
  a:hover{color:var(--brand-500);}
  :focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  @media (min-width:768px){.container{padding:0 24px;}}
  @media (min-width:1024px){.container{padding:0 32px;}}

  .section{padding:44px 0;}
  @media (min-width:768px){.section{padding:60px 0;}}
  @media (min-width:1024px){.section{padding:72px 0;}}

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:var(--surface);
    border-bottom:1px solid var(--line);
    transition:box-shadow .22s var(--ease);
  }
  .site-header.is-scrolled{box-shadow:var(--shadow-bar);}
  .header-inner{display:flex;align-items:center;gap:16px;min-height:70px;}
  .brand{
    display:inline-flex;align-items:center;gap:10px;
    color:var(--ink-900);font-weight:800;font-size:16px;flex:0 0 auto;
  }
  .brand:hover{color:var(--brand-700);}
  .logo-mark{
    width:36px;height:36px;border-radius:10px;
    background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
    color:#fff;display:grid;place-items:center;
    font-size:13px;font-weight:800;letter-spacing:.04em;
  }
  .brand-text{white-space:nowrap;}

  .chip-nav{
    display:flex;align-items:center;gap:8px;flex:1 1 auto;
    justify-content:center;overflow-x:auto;
    scrollbar-width:none;-ms-overflow-style:none;
  }
  .chip-nav::-webkit-scrollbar{display:none;}
  .chip{
    display:inline-flex;align-items:center;height:36px;padding:0 16px;
    border-radius:999px;border:1px solid var(--line);background:var(--surface);
    color:var(--ink-600);font-size:14px;font-weight:500;white-space:nowrap;
    transition:all .22s var(--ease);
  }
  .chip:hover{border-color:var(--brand-500);color:var(--brand-700);}
  .chip.is-active{
    background:var(--brand-700);border-color:var(--brand-700);color:#fff;
    box-shadow:0 4px 12px rgba(20,83,154,.24);
  }
  .header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}

  .menu-toggle{
    display:none;width:44px;height:44px;border-radius:12px;
    border:1px solid var(--line);background:var(--surface);
    align-items:center;justify-content:center;cursor:pointer;
    transition:all .22s var(--ease);
  }
  .menu-toggle:hover{border-color:var(--brand-500);color:var(--brand-700);}

  .mobile-drawer{
    display:none;border-top:1px solid var(--line);background:var(--surface);
    padding:16px 0 20px;
  }
  .mobile-drawer.is-open{display:block;}
  .mobile-drawer nav{display:flex;flex-direction:column;gap:8px;margin-bottom:16px;}
  .mobile-drawer .chip{height:42px;justify-content:flex-start;border-radius:12px;}

  /* ============ 按钮 ============ */
  .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;border:1px solid transparent;
    cursor:pointer;transition:all .22s var(--ease);
  }
  .btn-primary{background:var(--brand-700);color:#fff;}
  .btn-primary:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px);}
  .btn-secondary{background:var(--surface);border-color:var(--line-strong);color:var(--ink-900);}
  .btn-secondary:hover{border-color:var(--brand-700);color:var(--brand-700);}
  .btn-light{background:#fff;color:var(--brand-700);}
  .btn-light:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px);}
  .btn-sm{height:40px;padding:0 16px;font-size:14px;}
  .btn-block{width:100%;}
  .btn-arrow{transition:transform .22s var(--ease);}
  .btn:hover .btn-arrow{transform:translateX(2px);}

  /* ============ 面包屑 ============ */
  .breadcrumb{padding-top:22px;}
  .breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);}
  .breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
  .breadcrumb li+li::before{content:"/";color:var(--line-strong);}
  .breadcrumb .current{color:var(--ink-900);}

  /* ============ 分类头 ============ */
  .page-hero{
    background:var(--surface);border:1px solid var(--line);
    border-radius:20px;padding:26px;box-shadow:var(--shadow-card);
  }
  @media (min-width:768px){.page-hero{padding:34px 36px;}}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;
    border-radius:999px;background:var(--accent-100);color:#0E8C7E;
    font-size:12px;font-weight:600;margin-bottom:14px;
  }
  .page-hero h1{
    font-size:clamp(28px,3.6vw,40px);font-weight:800;line-height:1.25;letter-spacing:0;
  }
  .page-hero .lead{margin-top:12px;font-size:15px;color:var(--ink-600);max-width:680px;line-height:1.8;}
  .hero-meta{
    margin-top:18px;display:flex;flex-wrap:wrap;gap:8px 20px;
    font-size:13px;color:var(--ink-400);
  }
  .hero-meta strong{color:var(--ink-900);font-weight:700;}

  .filter-row{
    margin-top:22px;padding-top:20px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:8px;
  }
  .filter-chip{
    display:inline-flex;align-items:center;height:34px;padding:0 14px;
    border-radius:999px;border:1px solid var(--line);background:var(--bg-page);
    color:var(--ink-600);font-size:13px;cursor:pointer;transition:all .22s var(--ease);
  }
  .filter-chip:hover{border-color:var(--brand-500);color:var(--brand-700);}
  .filter-chip.is-active{background:var(--brand-100);border-color:var(--brand-100);color:var(--brand-700);font-weight:600;}

  /* ============ 主内容与分组 ============ */
  .layout-grid{display:grid;gap:24px;}
  @media (min-width:1024px){
    .layout-grid{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:32px;}
  }

  .group{margin-bottom:36px;scroll-margin-top:100px;}
  .group:last-child{margin-bottom:0;}
  .group-head{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
  .group-head::before{
    content:"";width:4px;height:20px;border-radius:2px;background:var(--accent-600);flex:0 0 auto;
  }
  .group-head h2{font-size:clamp(19px,2.2vw,23px);font-weight:700;line-height:1.35;}
  .group-note{margin-left:auto;font-size:13px;color:var(--ink-400);white-space:nowrap;}
  @media (max-width:520px){.group-note{display:none;}}

  .card-grid{display:grid;gap:20px;}
  @media (min-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}

  .content-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);overflow:hidden;height:100%;
    transition:all .22s var(--ease);
  }
  .content-card:hover{
    transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--brand-100);
  }
  .card-link{display:flex;flex-direction:column;height:100%;color:inherit;}
  .card-link:hover{color:inherit;}
  .cover{
    position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-page);
  }
  .cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease);}
  .content-card:hover .cover img{transform:scale(1.03);}
  .cover-tag{
    position:absolute;left:12px;top:12px;
    display:inline-flex;align-items:center;height:26px;padding:0 10px;
    border-radius:999px;background:rgba(11,44,77,.82);color:#fff;
    font-size:12px;font-weight:600;
  }
  .card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
  .card-title{
    font-size:17px;font-weight:600;line-height:1.5;color:var(--ink-900);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .content-card:hover .card-title{color:var(--brand-700);}
  .card-summary{
    font-size:14px;color:var(--ink-600);line-height:1.72;
    display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
  }
  .card-meta{
    margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
    display:flex;align-items:center;justify-content:space-between;
    font-size:13px;color:var(--ink-400);
  }
  .card-meta .meta-time{font-variant-numeric:tabular-nums;}

  .badge{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;
    border-radius:999px;font-size:12px;font-weight:600;
    background:var(--brand-100);color:var(--brand-700);
  }
  .badge-accent{background:var(--accent-100);color:#0E8C7E;}
  .badge-official{background:#fff;border:1px solid var(--warm-500);color:#B8791E;}

  /* ============ 侧栏 ============ */
  .side-sticky{display:grid;gap:20px;align-content:start;}
  @media (min-width:1024px){.side-sticky{position:sticky;top:92px;}}
  .side-card{
    background:var(--surface);border:1px solid var(--line);
    border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-card);
  }
  .side-card h2{
    font-size:15px;font-weight:700;margin-bottom:14px;
    display:flex;align-items:center;gap:8px;
  }
  .side-card h2::before{
    content:"";width:4px;height:14px;border-radius:2px;background:var(--accent-600);
  }

  .toc li a{
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    padding:10px 0;border-bottom:1px dashed var(--line);
    font-size:14px;color:var(--ink-600);
  }
  .toc li:last-child a{border-bottom:none;padding-bottom:0;}
  .toc li a:hover{color:var(--brand-700);}
  .toc .idx{font-size:12px;color:var(--ink-400);font-variant-numeric:tabular-nums;}

  .hot-item{
    display:flex;gap:12px;align-items:flex-start;
    padding:12px 0;border-bottom:1px solid var(--line);
  }
  .hot-item:last-child{border-bottom:none;padding-bottom:0;}
  .hot-item:hover .hot-title{color:var(--brand-700);}
  .hot-thumb{width:64px;height:48px;border-radius:10px;overflow:hidden;flex:0 0 auto;background:var(--bg-page);}
  .hot-thumb img{width:100%;height:100%;object-fit:cover;}
  .hot-title{font-size:14px;font-weight:600;line-height:1.5;color:var(--ink-900);transition:color .22s var(--ease);}
  .hot-time{font-size:12px;color:var(--ink-400);margin-top:4px;}

  .side-cta{
    background:linear-gradient(160deg,var(--brand-900),var(--brand-700));
    border-radius:var(--radius-card);padding:22px;color:#fff;box-shadow:var(--shadow-card);
  }
  .side-cta h2{font-size:16px;color:#fff;margin-bottom:8px;}
  .side-cta p{font-size:13px;color:#C8DAEE;line-height:1.72;margin-bottom:16px;}

  /* ============ 收藏 / 分享 CTA ============ */
  .cta-band{
    margin-top:48px;background:var(--surface);border:1px solid var(--line);
    border-radius:20px;padding:26px;box-shadow:var(--shadow-card);
    display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;
  }
  @media (min-width:768px){.cta-band{padding:32px 36px;}}
  .cta-band h2{font-size:clamp(20px,2.4vw,25px);font-weight:700;line-height:1.35;}
  .cta-band p{font-size:14px;color:var(--ink-600);margin-top:8px;max-width:560px;}
  .cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
  .share-group{display:flex;gap:10px;}
  .share-btn{
    width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
    background:var(--surface);display:grid;place-items:center;color:var(--ink-600);
    cursor:pointer;transition:all .22s var(--ease);
  }
  .share-btn:hover{border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-1px);}

  /* ============ 页脚 ============ */
  .site-footer{
    margin-top:64px;background:var(--brand-900);color:#C7D6E8;
    padding-top:56px;
  }
  .footer-grid{display:grid;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:1.5fr 1fr 1fr 1.2fr;gap:40px;}}
  .footer-brand{
    display:flex;align-items:center;gap:10px;
    color:#fff;font-size:18px;font-weight:800;margin-bottom:12px;
  }
  .footer-brand .logo-mark{background:rgba(255,255,255,.12);}
  .footer-about{font-size:13px;line-height:1.8;color:#A9BED4;max-width:320px;}
  .footer-col h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;}
  .footer-col ul{display:grid;gap:10px;}
  .footer-col a{font-size:13px;color:#A9BED4;}
  .footer-col a:hover{color:#fff;text-decoration:underline;}
  .footer-contact li{font-size:13px;color:#A9BED4;line-height:1.7;}
  .footer-bottom{
    margin-top:44px;border-top:1px solid rgba(255,255,255,.12);
    padding:18px 0 22px;display:flex;flex-wrap:wrap;gap:8px 20px;
    justify-content:space-between;font-size:12px;color:#8FA6BF;
  }

  /* ============ 响应式导航 ============ */
  @media (max-width:1023px){
    .chip-nav .chip{padding:0 12px;font-size:13px;}
    .brand{font-size:15px;}
  }
  @media (max-width:767px){
    .header-inner{justify-content:space-between;}
    .chip-nav{display:none;}
    .menu-toggle{display:inline-flex;}
    .header-cta{display:none;}
  }

  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;}
    html{scroll-behavior:auto;}
    .content-card:hover{transform:none;}
    .cover img{transition:none;}
  }

/* roulang page: category1 */
:root{
  --brand-900:#0B2C4D;
  --brand-700:#14539A;
  --brand-500:#1A6ABF;
  --brand-100:#E4EEF9;
  --accent-600:#12A594;
  --warm-500:#E8A33D;
  --ink-900:#0E1B2A;
  --ink-600:#4A5B70;
  --ink-400:#8296AB;
  --bg-page:#F6F8FB;
  --surface:#FFFFFF;
  --line:#E3E9F2;
  --line-strong:#CFDAE8;
  --radius-card:16px;
  --radius-sm:12px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(14,27,42,.04), 0 8px 24px rgba(20,83,154,.06);
  --shadow-card-hover:0 2px 4px rgba(14,27,42,.06), 0 16px 36px rgba(20,83,154,.12);
  --shadow-bar:0 6px 20px rgba(14,27,42,.08);
  --ease:all .22s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-page);
  color:var(--ink-900);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px}

html body .container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-bar)}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:74px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  font-weight:800;
  font-size:17px;
  letter-spacing:0;
  color:var(--brand-900);
}
.logo-mark{
  width:34px;height:34px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
  color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;
  letter-spacing:.5px;
  box-shadow:0 6px 14px rgba(20,83,154,.22);
}
.brand-text{white-space:nowrap}
.chip-nav{
  display:flex;
  align-items:center;
  gap:8px;
  flex:1 1 auto;
  justify-content:center;
  flex-wrap:nowrap;
}
.chip{
  height:36px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--ink-600);
  font-size:14px;
  display:inline-flex;
  align-items:center;
  white-space:nowrap;
  transition:var(--ease);
}
.chip:hover{
  border-color:var(--brand-500);
  color:var(--brand-700);
  background:#FBFCFE;
}
.chip.is-active{
  background:var(--brand-700);
  border-color:var(--brand-700);
  color:#fff;
  box-shadow:0 6px 16px rgba(20,83,154,.20);
}
.header-cta{
  flex:0 0 auto;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:var(--ease);
  background:transparent;
}
.btn svg{transition:var(--ease)}
.btn-primary{
  background:var(--brand-700);
  color:#fff;
  box-shadow:0 8px 18px rgba(20,83,154,.20);
}
.btn-primary:hover{background:var(--brand-500);transform:translateY(-1px)}
.btn-primary:hover svg{transform:translateX(2px)}
.btn-secondary{
  background:var(--surface);
  border-color:var(--line-strong);
  color:var(--ink-900);
}
.btn-secondary:hover{border-color:var(--brand-700);color:var(--brand-700)}
.btn-ghost{
  color:var(--brand-700);
  padding:0 4px;
  height:auto;
}
.btn-ghost:hover{text-decoration:underline;text-decoration-color:var(--accent-600);text-underline-offset:4px}
.btn-light{
  background:#fff;
  color:var(--brand-700);
}
.btn-light:hover{background:var(--brand-100);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn[disabled]{background:var(--bg-page);color:var(--ink-400);cursor:not-allowed;border-color:var(--line)}

/* ============ 面包屑 ============ */
.crumb-bar{padding:18px 0 4px}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-400);
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--ink-400);transition:var(--ease)}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb .sep{color:var(--line-strong)}
.breadcrumb .current{color:var(--ink-900);font-weight:600}

/* ============ 分类头 ============ */
.cat-hero{padding:14px 0 0}
.cat-hero-grid{
  display:grid;
  grid-template-columns:1.35fr 1fr;
  gap:32px;
  align-items:center;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:32px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:28px;
  padding:0 12px;
  border-radius:999px;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:13px;
  font-weight:600;
}
.tag-accent{background:rgba(18,165,148,.10);color:var(--accent-600)}
.cat-hero h1{
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.25;
  font-weight:800;
  color:var(--brand-900);
  margin:16px 0 12px;
}
.cat-hero .lead{
  font-size:15px;
  color:var(--ink-600);
  max-width:560px;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  margin-top:22px;
  padding-top:18px;
  border-top:1px dashed var(--line);
  font-size:13px;
  color:var(--ink-400);
}
.meta-row b{color:var(--ink-900);font-weight:700}
.cat-hero-media{
  border-radius:var(--radius-card);
  overflow:hidden;
  aspect-ratio:5/2;
  background:var(--bg-page);
  position:relative;
  box-shadow:var(--shadow-card);
}
.cat-hero-media img{width:100%;height:100%;object-fit:cover}
.cat-hero-media::after{
  content:"";
  position:absolute;inset:0;
  background:rgba(11,44,77,.04);
}

/* ============ 锚点条 ============ */
.anchor-bar{
  margin-top:24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:12px;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  box-shadow:var(--shadow-card);
}
.anchor-bar .anchor{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:38px;
  padding:0 14px;
  border-radius:var(--radius-sm);
  font-size:14px;
  color:var(--ink-600);
  border:1px solid transparent;
  transition:var(--ease);
}
.anchor-bar .anchor span{
  font-size:12px;
  color:var(--accent-600);
  font-weight:700;
}
.anchor-bar .anchor:hover{background:var(--brand-100);color:var(--brand-700);border-color:var(--line)}

/* ============ 板块通用 ============ */
.section{padding:56px 0 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:22px;
}
.section-head h2{
  font-size:clamp(22px,2.4vw,32px);
  line-height:1.3;
  font-weight:700;
  color:var(--brand-900);
  position:relative;
  padding-left:14px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:4px;
  border-radius:2px;
  background:var(--accent-600);
}
.section-head p{
  font-size:14px;
  color:var(--ink-400);
  margin-top:6px;
  padding-left:14px;
}

/* ============ 目录索引大列表 ============ */
.index-group{margin-bottom:26px}
.group-title{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  font-weight:700;
  color:var(--brand-700);
  padding:0 4px 10px;
}
.group-title::after{
  content:"";
  flex:1;
  height:1px;
  background:var(--line);
}
.index-list{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.index-row{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:72px;
  padding:16px 22px;
  border-bottom:1px solid var(--line);
  transition:var(--ease);
}
.index-row:last-child{border-bottom:none}
.index-row:hover{background:rgba(228,238,249,.5)}
.index-no{
  font-size:14px;
  font-weight:800;
  color:var(--ink-400);
  min-width:34px;
  letter-spacing:.5px;
  transition:var(--ease);
}
.index-row:hover .index-no{color:var(--accent-600)}
.index-main{flex:1;min-width:0}
.index-title{
  font-size:17px;
  font-weight:600;
  color:var(--ink-900);
  transition:var(--ease);
}
.index-row:hover .index-title{color:var(--brand-700)}
.index-desc{
  font-size:13px;
  color:var(--ink-400);
  margin-top:2px;
  overflow:hidden;
  text-overflow:ellipsis;
  display:-webkit-box;
  -webkit-line-clamp:1;
  -webkit-box-orient:vertical;
}
.index-arrow{
  flex:0 0 auto;
  width:32px;height:32px;
  border-radius:999px;
  border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-400);
  transition:var(--ease);
}
.index-row:hover .index-arrow{
  background:var(--brand-700);
  border-color:var(--brand-700);
  color:#fff;
  transform:translateX(3px);
}
.stat-line{
  margin-top:14px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:13px;
  color:var(--ink-400);
  padding:0 4px;
}
.stat-line b{color:var(--brand-700)}

/* ============ 要点卡 ============ */
.point-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.point-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:var(--ease);
  display:flex;
  flex-direction:column;
}
.point-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-card-hover);
  border-color:var(--brand-100);
}
.point-media{aspect-ratio:16/9;background:var(--bg-page);overflow:hidden}
.point-media img{width:100%;height:100%;object-fit:cover;transition:var(--ease)}
.point-card:hover .point-media img{transform:scale(1.03)}
.point-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.point-body h3{font-size:19px;font-weight:600;color:var(--brand-900)}
.point-body p{font-size:14px;color:var(--ink-600)}
.point-foot{
  margin-top:auto;
  padding-top:12px;
  border-top:1px dashed var(--line);
  font-size:13px;
  color:var(--ink-400);
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.point-foot .dot{color:var(--accent-600);font-weight:700}

/* ============ 核验流程 ============ */
.flow{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  position:relative;
}
.flow-step{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px;
  box-shadow:var(--shadow-card);
  transition:var(--ease);
}
.flow-step:hover{border-color:var(--brand-100);box-shadow:var(--shadow-card-hover);transform:translateY(-3px)}
.flow-step .step-no{
  font-size:13px;
  font-weight:800;
  color:var(--accent-600);
  letter-spacing:1px;
}
.flow-step h3{font-size:16px;font-weight:600;margin:10px 0 8px;color:var(--brand-900)}
.flow-step p{font-size:14px;color:var(--ink-600)}

/* ============ FAQ ============ */
.faq-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:var(--ease);
}
.faq-item[open]{border-color:var(--brand-100)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:18px 20px;
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;
  width:24px;height:24px;
  border-radius:999px;
  border:1px solid var(--line-strong);
  color:var(--brand-700);
  font-size:15px;
  line-height:1;
  display:inline-flex;align-items:center;justify-content:center;
}
.faq-item[open] summary::after{content:"−";background:var(--brand-700);border-color:var(--brand-700);color:#fff}
.faq-body{
  padding:0 20px 20px 34px;
  font-size:14px;
  color:var(--ink-600);
  border-left:2px solid var(--accent-600);
  margin-left:20px;
  padding-left:16px;
}

/* ============ CTA 通栏 ============ */
.cta-band{padding:64px 0 0}
.cta-card{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  padding:36px 32px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  color:#fff;
  background-image:linear-gradient(100deg,rgba(11,44,77,.95),rgba(20,83,154,.82)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  box-shadow:var(--shadow-card);
}
.cta-card h2{font-size:clamp(20px,2.2vw,28px);font-weight:700;line-height:1.35}
.cta-card p{font-size:14px;color:rgba(255,255,255,.82);margin-top:8px;max-width:520px}
.cta-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.share-group{display:flex;align-items:center;gap:10px}
.share-group button{
  width:44px;height:44px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.32);
  background:rgba(255,255,255,.08);
  color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;
  transition:var(--ease);
}
.share-group button:hover{background:#fff;color:var(--brand-700);border-color:#fff;transform:translateY(-2px)}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:72px;
  background:var(--brand-900);
  color:#D7E2EF;
  padding:56px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:32px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:800;
  color:#fff;
}
.footer-brand .logo-mark{box-shadow:none}
.footer-about{
  margin-top:14px;
  font-size:13px;
  line-height:1.8;
  color:rgba(215,226,239,.72);
  max-width:300px;
}
.footer-col h3{
  font-size:14px;
  font-weight:700;
  color:#fff;
  margin-bottom:14px;
  letter-spacing:.5px;
}
.footer-col ul li{margin-bottom:10px}
.footer-col a{
  font-size:13px;
  color:rgba(215,226,239,.78);
  transition:var(--ease);
}
.footer-col a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--accent-600);text-underline-offset:4px}
.footer-contact li{font-size:13px;color:rgba(215,226,239,.78);margin-bottom:10px}
.footer-bottom{
  margin-top:36px;
  padding-top:18px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  flex-wrap:wrap;
  gap:8px 20px;
  justify-content:space-between;
  font-size:12px;
  color:rgba(215,226,239,.6);
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .cat-hero-grid{grid-template-columns:1fr;gap:24px;padding:26px}
  .cat-hero-media{aspect-ratio:5/2}
  .point-grid{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr)}
  .faq-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .header-inner{flex-wrap:wrap;min-height:auto;padding-top:12px;padding-bottom:12px;gap:12px}
  .chip-nav{
    order:3;
    width:100%;
    justify-content:flex-start;
    overflow-x:auto;
    scrollbar-width:none;
    -webkit-overflow-scrolling:touch;
    padding-bottom:2px;
    mask-image:linear-gradient(90deg,#000 88%,transparent);
    -webkit-mask-image:linear-gradient(90deg,#000 88%,transparent);
  }
  .chip-nav::-webkit-scrollbar{display:none}
  .brand{font-size:16px}
  .btn{height:44px;padding:0 18px;font-size:14px}
  .section{padding:44px 0 0}
  .index-row{padding:14px 16px;gap:12px;min-height:68px}
  .index-title{font-size:16px}
  .index-desc{-webkit-line-clamp:2}
  .point-body{padding:18px}
  .cta-card{padding:26px 20px}
  .faq-body{margin-left:16px;padding:0 16px 18px 14px}
  .site-footer{margin-top:56px;padding:44px 0 22px}
}
@media (max-width:639px){
  .point-grid{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cat-hero-grid{padding:20px}
  .cat-hero h1{margin-top:12px}
  .section-head{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .point-card:hover,.flow-step:hover,.btn:hover{transform:none}
}

/* roulang page: category3 */
:root{
    --brand-900:#0B2C4D;
    --brand-700:#14539A;
    --brand-500:#1A6ABF;
    --brand-100:#E4EEF9;
    --accent-600:#12A594;
    --warm-500:#E8A33D;
    --ink-900:#0E1B2A;
    --ink-600:#4A5B70;
    --ink-400:#8296AB;
    --bg-page:#F6F8FB;
    --surface:#FFFFFF;
    --line:#E3E9F2;
    --line-strong:#CFDAE8;
    --radius-card:16px;
    --radius-sm:12px;
    --radius-btn:10px;
    --shadow-card:0 1px 2px rgba(14,27,42,.04), 0 8px 24px rgba(20,83,154,.06);
    --shadow-card-hover:0 2px 4px rgba(14,27,42,.06), 0 16px 36px rgba(20,83,154,.12);
    --shadow-bar:0 6px 20px rgba(14,27,42,.08);
    --ease:cubic-bezier(.4,0,.2,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
    font-size:16px;
    line-height:1.75;
    color:var(--ink-900);
    background:var(--bg-page);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:var(--brand-700);text-decoration:none;transition:color .22s var(--ease);}
  button{font:inherit;color:inherit;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px;}
  .num{font-variant-numeric:tabular-nums;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
  @media (min-width:768px){.container{padding-left:24px;padding-right:24px;}}
  @media (min-width:1024px){.container{padding-left:32px;padding-right:32px;}}

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:var(--surface);
    border-bottom:1px solid var(--line);
    transition:box-shadow .22s var(--ease);
  }
  .site-header.is-scrolled{box-shadow:var(--shadow-bar);}
  .header-inner{display:flex;align-items:center;gap:14px;height:68px;}
  .brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:var(--brand-900);letter-spacing:0;white-space:nowrap;}
  .logo-mark{
    display:inline-flex;align-items:center;justify-content:center;
    width:34px;height:34px;border-radius:10px;
    background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
    color:#fff;font-size:13px;font-weight:800;letter-spacing:.5px;
    box-shadow:0 4px 10px rgba(20,83,154,.24);
  }
  .chip-nav{display:none;align-items:center;gap:8px;flex:1;justify-content:center;}
  @media (min-width:1024px){.chip-nav{display:flex;}}
  .chip{
    display:inline-flex;align-items:center;height:36px;padding:0 16px;
    border-radius:999px;border:1px solid var(--line);
    background:#fff;color:var(--ink-600);font-size:14px;white-space:nowrap;
    transition:all .22s var(--ease);
  }
  .chip:hover{border-color:var(--brand-500);color:var(--brand-700);}
  .chip.is-active{background:var(--brand-700);border-color:var(--brand-700);color:#fff;box-shadow:0 3px 10px rgba(20,83,154,.28);}
  .header-cta{display:none;margin-left:auto;}
  @media (min-width:1024px){.header-cta{display:inline-flex;}}
  .nav-toggle{
    margin-left:auto;display:inline-flex;align-items:center;justify-content:center;
    width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
    background:#fff;color:var(--brand-900);font-size:20px;line-height:1;cursor:pointer;
    transition:all .22s var(--ease);
  }
  .nav-toggle:hover{border-color:var(--brand-500);color:var(--brand-700);}
  @media (min-width:1024px){.nav-toggle{display:none;}}
  .drawer{
    display:none;border-top:1px solid var(--line);background:#fff;
    padding:16px 0 22px;
  }
  .drawer.is-open{display:block;}
  @media (min-width:1024px){.drawer.is-open{display:none;}}
  .drawer-chips{display:flex;flex-direction:column;gap:10px;}
  .drawer-chips .chip{justify-content:center;height:44px;border-radius:12px;}
  .drawer-cta{margin-top:16px;display:flex;}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 20px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;border:1px solid transparent;
    cursor:pointer;transition:all .22s var(--ease);
  }
  .btn-sm{height:40px;padding:0 16px;font-size:14px;}
  .btn-primary{background:var(--brand-700);color:#fff;box-shadow:0 4px 12px rgba(20,83,154,.22);}
  .btn-primary:hover{background:var(--brand-500);transform:translateY(-1px);color:#fff;}
  .btn-outline{background:#fff;border-color:var(--line-strong);color:var(--ink-900);}
  .btn-outline:hover{border-color:var(--brand-700);color:var(--brand-700);}
  .btn-ghost{background:transparent;color:var(--brand-700);padding:0 4px;height:auto;font-weight:600;}
  .btn-ghost:hover{text-decoration:underline;text-decoration-color:var(--accent-600);text-underline-offset:4px;}
  .btn .arrow{transition:transform .22s var(--ease);}
  .btn:hover .arrow{transform:translateX(2px);}
  .btn[disabled]{background:var(--bg-page);color:var(--ink-400);border-color:var(--line);cursor:not-allowed;transform:none;box-shadow:none;}

  /* ---------- 通用板块 ---------- */
  .section{padding-top:56px;padding-bottom:56px;}
  @media (min-width:768px){.section{padding-top:72px;padding-bottom:72px;}}
  @media (min-width:1024px){.section{padding-top:96px;padding-bottom:96px;}}
  .section-tight{padding-top:36px;padding-bottom:36px;}
  @media (min-width:1024px){.section-tight{padding-top:48px;padding-bottom:48px;}}

  .section-title{
    display:flex;align-items:center;gap:12px;
    font-size:clamp(22px,2.4vw,32px);line-height:1.3;font-weight:700;color:var(--brand-900);
  }
  .section-title::before{content:'';width:4px;height:24px;border-radius:2px;background:var(--accent-600);flex:none;}
  .section-sub{margin-top:10px;color:var(--ink-600);font-size:15px;max-width:760px;}

  /* ---------- 面包屑 ---------- */
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);padding-top:20px;}
  .breadcrumb a{color:var(--ink-400);}
  .breadcrumb a:hover{color:var(--brand-700);}
  .breadcrumb .sep{color:var(--line-strong);}
  .breadcrumb .current{color:var(--ink-900);}

  /* ---------- 分类头 ---------- */
  .cat-head{padding-top:20px;padding-bottom:8px;}
  .cat-head-grid{display:grid;grid-template-columns:1fr;gap:24px;align-items:end;}
  @media (min-width:1024px){.cat-head-grid{grid-template-columns:8fr 4fr;gap:32px;}}
  .cat-h1{
    font-size:clamp(28px,3.6vw,44px);line-height:1.25;font-weight:800;color:var(--brand-900);
    letter-spacing:0;margin-top:14px;
  }
  .cat-desc{margin-top:14px;color:var(--ink-600);font-size:16px;max-width:720px;}
  .cat-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:13px;color:var(--ink-400);}
  .badge{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
    font-size:12px;font-weight:600;letter-spacing:0;
  }
  .badge-brand{background:var(--brand-100);color:var(--brand-700);}
  .badge-accent{background:rgba(18,165,148,.12);color:var(--accent-600);}
  .badge-warm{border:1px solid var(--warm-500);color:var(--warm-500);background:#fff;}
  .cat-media{
    border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);
    aspect-ratio:5/2;background:var(--bg-page);
  }
  .cat-media img{width:100%;height:100%;object-fit:cover;}

  /* ---------- 规则信息条 ---------- */
  .info-strip{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);padding:20px 22px;
    display:grid;grid-template-columns:1fr;gap:18px;
  }
  @media (min-width:768px){.info-strip{grid-template-columns:repeat(3,1fr);gap:24px;}}
  .info-strip .item{display:flex;flex-direction:column;gap:6px;}
  .info-strip .k{font-size:12px;color:var(--ink-400);}
  .info-strip .v{font-size:15px;font-weight:600;color:var(--ink-900);}
  .info-strip .v small{font-weight:400;color:var(--ink-600);font-size:13px;}

  /* ---------- 时间轴 ---------- */
  .timeline{display:flex;flex-direction:column;gap:18px;margin-top:28px;}
  .tl-item{display:grid;grid-template-columns:1fr;gap:0;}
  @media (min-width:768px){.tl-item{grid-template-columns:104px 28px minmax(0,1fr);}}
  .tl-time{
    font-size:13px;color:var(--ink-400);font-variant-numeric:tabular-nums;
    padding-bottom:6px;display:flex;align-items:center;gap:8px;
  }
  @media (min-width:768px){
    .tl-time{justify-content:flex-end;padding:26px 16px 0 0;padding-bottom:0;}
  }
  .tl-time::before{content:'';width:6px;height:6px;border-radius:999px;background:var(--accent-600);}
  @media (min-width:768px){.tl-time::before{display:none;}}
  .tl-rail{display:none;position:relative;}
  @media (min-width:768px){.tl-rail{display:block;}}
  .tl-rail::before{
    content:'';position:absolute;top:0;bottom:-18px;left:50%;width:2px;
    transform:translateX(-50%);background:var(--line-strong);
  }
  .tl-item:last-child .tl-rail::before{bottom:auto;height:30px;}
  .tl-dot{
    position:relative;z-index:1;width:12px;height:12px;border-radius:999px;
    background:var(--accent-600);margin:24px auto 0;
    box-shadow:0 0 0 4px rgba(18,165,148,.15);
  }
  .tl-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);padding:22px;
    transition:all .22s var(--ease);
  }
  @media (min-width:1024px){.tl-card{padding:26px;}}
  .tl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover);border-color:var(--brand-100);}
  .tl-card:hover .tl-title{color:var(--brand-700);}
  .tl-top{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:10px;}
  .tl-title{font-size:19px;line-height:1.45;font-weight:600;color:var(--brand-900);transition:color .22s var(--ease);}
  .tl-text{margin-top:10px;color:var(--ink-600);font-size:15px;max-width:720px;}
  .tl-foot{
    margin-top:16px;padding-top:14px;border-top:1px dashed var(--line-strong);
    display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
    font-size:13px;color:var(--ink-400);
  }
  .tl-foot .link{font-weight:600;color:var(--brand-700);display:inline-flex;align-items:center;gap:6px;}
  .tl-foot .link:hover{text-decoration:underline;text-decoration-color:var(--accent-600);text-underline-offset:4px;}

  /* ---------- 票券式步骤 ---------- */
  .ticket-grid{display:grid;grid-template-columns:1fr;gap:20px;margin-top:28px;}
  @media (min-width:768px){.ticket-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
  .ticket{
    position:relative;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:24px;
    transition:all .22s var(--ease);overflow:hidden;
  }
  .ticket::after{
    content:'';position:absolute;left:0;top:0;bottom:0;width:4px;
    background:var(--accent-600);opacity:.85;
  }
  .ticket:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover);border-color:var(--brand-100);}
  .ticket .no{
    font-size:13px;font-weight:700;color:var(--accent-600);letter-spacing:1px;
    font-variant-numeric:tabular-nums;
  }
  .ticket h3{margin-top:8px;font-size:18px;font-weight:600;color:var(--brand-900);}
  .ticket p{margin-top:10px;color:var(--ink-600);font-size:14.5px;}

  /* ---------- 适用场景卡 ---------- */
  .scene-grid{display:grid;grid-template-columns:1fr;gap:20px;margin-top:28px;}
  @media (min-width:640px){.scene-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.scene-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
  .scene-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    overflow:hidden;box-shadow:var(--shadow-card);transition:all .22s var(--ease);
    display:flex;flex-direction:column;
  }
  .scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover);border-color:var(--brand-100);}
  .scene-card:hover .scene-title{color:var(--brand-700);}
  .scene-thumb{aspect-ratio:16/9;background:var(--bg-page);overflow:hidden;}
  .scene-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
  .scene-card:hover .scene-thumb img{transform:scale(1.03);}
  .scene-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .scene-title{font-size:18px;font-weight:600;color:var(--brand-900);transition:color .22s var(--ease);}
  .scene-body p{color:var(--ink-600);font-size:14.5px;}
  .scene-body .meta{margin-top:auto;font-size:13px;color:var(--ink-400);padding-top:10px;border-top:1px dashed var(--line-strong);}

  /* ---------- FAQ ---------- */
  .faq-list{display:grid;grid-template-columns:1fr;gap:12px;margin-top:26px;}
  @media (min-width:1024px){.faq-list{grid-template-columns:repeat(2,1fr);gap:16px;}}
  .faq-item{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);
    box-shadow:var(--shadow-card);overflow:hidden;transition:all .22s var(--ease);
  }
  .faq-item:hover{border-color:var(--brand-100);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
    padding:18px 20px;background:none;border:0;text-align:left;cursor:pointer;
    font-size:16px;font-weight:600;color:var(--brand-900);transition:color .22s var(--ease);
  }
  .faq-q:hover{color:var(--brand-700);}
  .faq-icon{
    flex:none;width:24px;height:24px;border-radius:999px;border:1px solid var(--line-strong);
    display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:600;
    color:var(--brand-700);transition:all .22s var(--ease);
  }
  .faq-item.is-open .faq-icon{background:var(--brand-700);border-color:var(--brand-700);color:#fff;}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
  .faq-item.is-open .faq-a{max-height:420px;}
  .faq-a-inner{
    padding:0 20px 20px 20px;margin-left:14px;border-left:2px solid var(--accent-600);
    color:var(--ink-600);font-size:15px;
  }

  /* ---------- CTA 通栏 ---------- */
  .cta-band{
    border-radius:var(--radius-card);overflow:hidden;
    background:linear-gradient(rgba(11,44,77,.93),rgba(11,44,77,.93)),
      url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    padding:28px 24px;display:grid;grid-template-columns:1fr;gap:20px;align-items:center;
    box-shadow:var(--shadow-card);
  }
  @media (min-width:1024px){
    .cta-band{grid-template-columns:minmax(0,1fr) auto;padding:36px 40px;gap:32px;}
  }
  .cta-band h2{color:#fff;font-size:clamp(20px,2.2vw,26px);line-height:1.35;font-weight:700;}
  .cta-band p{color:rgba(228,238,249,.82);margin-top:8px;font-size:14.5px;max-width:560px;}
  .cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px;}
  .share-group{display:inline-flex;align-items:center;gap:8px;}
  .share-btn{
    width:42px;height:42px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;
    background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);color:#fff;cursor:pointer;
    transition:all .22s var(--ease);
  }
  .share-btn:hover{background:rgba(255,255,255,.24);transform:translateY(-1px);}
  .share-btn svg{width:18px;height:18px;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--brand-900);color:#CBD9E8;margin-top:0;}
  .footer-grid{
    display:grid;grid-template-columns:1fr;gap:32px;padding:52px 0 34px;
  }
  @media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px;}}
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800;}
  .footer-about{margin-top:14px;font-size:14px;color:#9FB5CC;max-width:320px;}
  .footer-col h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px;}
  .footer-col ul{display:flex;flex-direction:column;gap:10px;}
  .footer-col a{color:#CBD9E8;font-size:14px;}
  .footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
  .footer-contact li{font-size:14px;color:#9FB5CC;}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.12);padding:18px 0 26px;
    display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;
    font-size:12px;color:#8DA5BE;
  }

  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;}
    .tl-card:hover,.ticket:hover,.scene-card:hover{transform:none;}
  }

/* roulang page: category4 */
:root{
    --brand-900:#0B2C4D;
    --brand-700:#14539A;
    --brand-500:#1A6ABF;
    --brand-100:#E4EEF9;
    --accent-600:#12A594;
    --warm-500:#E8A33D;
    --ink-900:#0E1B2A;
    --ink-600:#4A5B70;
    --ink-400:#8296AB;
    --bg-page:#F6F8FB;
    --surface:#FFFFFF;
    --line:#E3E9F2;
    --line-strong:#CFDAE8;
    --r-card:16px;
    --r-sm:12px;
    --r-btn:10px;
    --sh-card:0 1px 2px rgba(14,27,42,.04), 0 8px 24px rgba(20,83,154,.06);
    --sh-hover:0 2px 4px rgba(14,27,42,.06), 0 16px 36px rgba(20,83,154,.12);
    --sh-sticky:0 6px 20px rgba(14,27,42,.08);
    --ease:cubic-bezier(.4,0,.2,1);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
    font-size:16px;
    line-height:1.75;
    color:var(--ink-900);
    background:var(--bg-page);
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0}
  p{margin:0}
  ul{margin:0;padding:0;list-style:none}
  img{display:block;max-width:100%;height:auto}
  button{font:inherit;cursor:pointer}
  a{color:var(--brand-700);text-decoration:none;transition:color .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease),opacity .22s var(--ease)}
  a:hover{color:var(--brand-500)}
  :focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
  .num{font-variant-numeric:tabular-nums;font-family:Inter,ui-sans-serif,system-ui,sans-serif}

  /* 容器 */
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){ .container{padding:0 24px} }
  @media (min-width:1024px){ .container{padding:0 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);
    backdrop-filter:saturate(180%) blur(6px);
    transition:box-shadow .22s var(--ease);
  }
  .site-header.is-scrolled{box-shadow:var(--sh-sticky)}
  .header-inner{display:flex;align-items:center;gap:20px;min-height:68px;padding-top:10px;padding-bottom:10px}
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink-900)}
  .brand:hover{color:var(--ink-900)}
  .logo-mark{
    width:36px;height:36px;flex:0 0 auto;border-radius:var(--r-btn);
    background:linear-gradient(140deg,var(--brand-700),var(--brand-500));
    color:#fff;font-weight:800;font-size:13px;letter-spacing:.5px;
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 4px 10px rgba(20,83,154,.22);
  }
  .brand-name{font-size:17px;font-weight:800;white-space:nowrap}

  .chip-nav{display:flex;align-items:center;gap:8px;flex:1 1 auto;justify-content:center}
  .chip{
    display:inline-flex;align-items:center;height:36px;padding:0 16px;
    border:1px solid var(--line);border-radius:999px;
    background:#fff;color:var(--ink-600);
    font-size:14px;font-weight:600;line-height:1;white-space:nowrap;
    transition:all .22s var(--ease);
  }
  .chip:hover{border-color:var(--brand-500);color:var(--brand-700);background:#fff}
  .chip.is-active{
    background:var(--brand-700);border-color:var(--brand-700);color:#fff;
    box-shadow:0 4px 12px rgba(20,83,154,.22);
  }
  .chip.is-active:hover{color:#fff;background:var(--brand-500);border-color:var(--brand-500)}

  .header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;margin-left:auto}

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;border-radius:var(--r-btn);
    font-size:15px;font-weight:700;line-height:1;white-space:nowrap;
    border:1px solid transparent;cursor:pointer;
    transition:all .22s var(--ease);
  }
  .btn svg{flex:0 0 auto;transition:transform .22s var(--ease)}
  .btn-primary{background:var(--brand-700);color:#fff;box-shadow:0 6px 16px rgba(20,83,154,.20)}
  .btn-primary:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(20,83,154,.26)}
  .btn-primary:hover svg{transform:translateX(2px)}
  .btn-ghost{background:#fff;border-color:var(--line-strong);color:var(--ink-900)}
  .btn-ghost:hover{border-color:var(--brand-700);color:var(--brand-700);transform:translateY(-1px)}
  .btn-light{background:#fff;color:var(--brand-700)}
  .btn-light:hover{background:var(--brand-100);color:var(--brand-900);transform:translateY(-1px)}
  .btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px}
  .link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--brand-700)}
  .link-more:hover{color:var(--brand-500);text-decoration:underline;text-decoration-color:var(--accent-600);text-underline-offset:4px}

  /* 面包屑 */
  .breadcrumb-bar{background:#fff;border-bottom:1px solid var(--line)}
  .breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--ink-400);padding:14px 0}
  .breadcrumb a{color:var(--ink-400)}
  .breadcrumb a:hover{color:var(--brand-700)}
  .breadcrumb .sep{color:var(--line-strong)}
  .breadcrumb .current{color:var(--ink-900);font-weight:600}

  /* 分类头 */
  .cat-head{background:#fff;padding:44px 0 40px;border-bottom:1px solid var(--line)}
  .cat-head h1{font-size:clamp(28px,3.6vw,44px);line-height:1.25;font-weight:800;color:var(--brand-900)}
  .cat-sub{margin-top:14px;max-width:720px;font-size:16px;color:var(--ink-600)}
  .meta-row{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:22px;font-size:13px;color:var(--ink-400)}
  .meta-row .num{color:var(--ink-600);font-weight:600}
  .dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong)}

  /* 板块 */
  .section{padding:56px 0}
  @media (min-width:768px){ .section{padding:72px 0} }
  @media (min-width:1024px){ .section{padding:80px 0} }
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
  .section-title{position:relative;padding-left:14px;font-size:clamp(21px,2.4vw,28px);line-height:1.3;color:var(--brand-900)}
  .section-title::before{content:"";position:absolute;left:0;top:.28em;width:4px;height:1em;border-radius:2px;background:var(--accent-600)}
  .section-desc{margin-top:8px;font-size:14px;color:var(--ink-600);max-width:640px}

  .badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:700;line-height:1}
  .badge-brand{background:var(--brand-100);color:var(--brand-700)}
  .badge-official{border:1px solid var(--warm-500);color:var(--warm-500);background:transparent}
  .badge-accent{background:rgba(18,165,148,.12);color:#0E8577}

  /* 保障要点 */
  .assure-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:640px){ .assure-grid{grid-template-columns:repeat(2,1fr)} }
  @media (min-width:1024px){ .assure-grid{grid-template-columns:repeat(4,1fr);gap:24px} }
  .assure-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    padding:24px 22px;box-shadow:var(--sh-card);transition:all .22s var(--ease);
  }
  .assure-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:var(--brand-100)}
  .assure-index{font-size:13px;font-weight:800;color:var(--accent-600);letter-spacing:1px}
  .assure-card h3{margin-top:12px;font-size:18px;line-height:1.4;color:var(--ink-900)}
  .assure-card p{margin-top:10px;font-size:14px;line-height:1.7;color:var(--ink-600)}

  /* 瀑布卡片 */
  .masonry{column-count:1;column-gap:20px}
  @media (min-width:640px){ .masonry{column-count:2;column-gap:20px} }
  @media (min-width:1024px){ .masonry{column-count:3;column-gap:24px} }
  .m-card{
    display:block;break-inside:avoid;margin-bottom:20px;
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    overflow:hidden;box-shadow:var(--sh-card);color:var(--ink-900);
    transition:all .22s var(--ease);
  }
  @media (min-width:1024px){ .m-card{margin-bottom:24px} }
  .m-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:var(--brand-100);color:var(--ink-900)}
  .card-media{position:relative;background:var(--bg-page);overflow:hidden}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
  .m-card:hover .card-media img{transform:scale(1.03)}
  .ratio-16-9{aspect-ratio:16/9}
  .ratio-4-3{aspect-ratio:4/3}
  .ratio-5-3{aspect-ratio:5/3}
  .card-media::after{content:"";position:absolute;inset:0;background:rgba(11,44,77,.04)}
  .card-body{padding:20px}
  .card-title{margin-top:12px;font-size:17px;line-height:1.45;font-weight:700;color:var(--ink-900);transition:color .22s var(--ease)}
  .m-card:hover .card-title{color:var(--brand-700)}
  .card-desc{margin-top:10px;font-size:14px;line-height:1.7;color:var(--ink-600)}
  .card-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;color:var(--ink-400)}
  .card-meta .num{font-weight:700;color:var(--ink-600)}

  /* 处理流程 */
  .flow-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:26px 24px}
  .flow{display:grid;grid-template-columns:1fr;gap:18px}
  @media (min-width:768px){ .flow{grid-template-columns:repeat(4,1fr);gap:24px} }
  .flow-step{position:relative;padding-left:0}
  .flow-step::before{
    content:"";position:absolute;left:0;top:0;width:38px;height:3px;border-radius:2px;background:var(--accent-600);opacity:.85;
  }
  .flow-step h3{margin-top:18px;font-size:16.5px;color:var(--ink-900)}
  .flow-step p{margin-top:8px;font-size:14px;line-height:1.7;color:var(--ink-600)}
  @media (min-width:768px){
    .flow-step+ .flow-step{border-left:1px solid var(--line);padding-left:24px}
    .flow-step+.flow-step::before{left:24px}
  }

  /* 自查清单 */
  .check-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:1024px){ .check-grid{grid-template-columns:2fr 1fr;gap:24px} }
  .panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:26px 24px}
  .check-list{display:grid;grid-template-columns:1fr;gap:14px;margin-top:18px}
  @media (min-width:640px){ .check-list{grid-template-columns:repeat(2,1fr);gap:16px 24px} }
  .check-item{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;line-height:1.7;color:var(--ink-600)}
  .check-icon{
    width:22px;height:22px;flex:0 0 auto;border-radius:50%;margin-top:4px;
    background:rgba(18,165,148,.12);color:var(--accent-600);
    display:flex;align-items:center;justify-content:center;
  }
  .side-note{background:var(--brand-900);color:#fff;border-radius:var(--r-card);padding:26px 24px;box-shadow:var(--sh-card)}
  .side-note h3{font-size:18px;color:#fff}
  .side-note p{margin-top:12px;font-size:14px;line-height:1.75;color:rgba(255,255,255,.78)}
  .side-note .side-list{margin-top:16px;display:grid;gap:10px}
  .side-note .side-list li{font-size:13.5px;color:rgba(255,255,255,.8);padding-left:14px;position:relative}
  .side-note .side-list li::before{content:"";position:absolute;left:0;top:.62em;width:5px;height:5px;border-radius:50%;background:var(--accent-600)}

  /* FAQ */
  .faq-list{display:grid;gap:14px}
  .faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);box-shadow:var(--sh-card);overflow:hidden;transition:border-color .22s var(--ease)}
  .faq-item.is-open{border-color:var(--brand-100)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 22px;background:transparent;border:0;text-align:left;
    font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.5;
  }
  .faq-q:hover{color:var(--brand-700)}
  .faq-icon{position:relative;width:18px;height:18px;flex:0 0 auto}
  .faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-700);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
  .faq-icon::before{left:0;top:8px;width:18px;height:2px}
  .faq-icon::after{left:8px;top:0;width:2px;height:18px}
  .faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
  .faq-a{display:none;padding:0 22px 20px 34px;border-left:2px solid transparent}
  .faq-item.is-open .faq-a{display:block;box-shadow:inset 2px 0 0 var(--accent-600)}
  .faq-a p{font-size:14.5px;line-height:1.8;color:var(--ink-600)}

  /* 分享 CTA */
  .share-cta{background:var(--brand-700);border-radius:0}
  .share-inner{display:flex;flex-direction:column;gap:20px;align-items:flex-start;padding:36px 0}
  @media (min-width:768px){ .share-inner{flex-direction:row;align-items:center;justify-content:space-between;padding:44px 0} }
  .share-inner h2{font-size:clamp(20px,2.2vw,26px);color:#fff}
  .share-inner p{margin-top:10px;font-size:14.5px;color:rgba(255,255,255,.8);max-width:560px}
  .share-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
  .icon-btn{
    width:44px;height:44px;border-radius:var(--r-btn);
    display:inline-flex;align-items:center;justify-content:center;
    background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.26);color:#fff;
    transition:all .22s var(--ease);
  }
  .icon-btn:hover{background:rgba(255,255,255,.22);transform:translateY(-1px)}

  /* 页脚 */
  .site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);margin-top:0}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:52px 0 36px}
  @media (min-width:768px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:28px} }
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800}
  .footer-about{margin-top:14px;font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.66);max-width:320px}
  .footer-col h3{font-size:14px;color:#fff;font-weight:700;letter-spacing:.4px}
  .footer-col ul{margin-top:16px;display:grid;gap:10px}
  .footer-col a{font-size:13.5px;color:rgba(255,255,255,.7)}
  .footer-col a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--accent-600);text-underline-offset:4px}
  .footer-contact li{font-size:13.5px;color:rgba(255,255,255,.7)}
  .footer-bottom{
    display:flex;flex-direction:column;gap:8px;
    padding:18px 0 26px;border-top:1px solid rgba(255,255,255,.12);
    font-size:12px;color:rgba(255,255,255,.55);
  }
  @media (min-width:768px){ .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between} }

  /* 移动端导航横向滚动 */
  @media (max-width:900px){
    .header-inner{flex-wrap:wrap;row-gap:10px;min-height:auto}
    .chip-nav{
      order:3;flex:1 1 100%;width:100%;justify-content:flex-start;
      overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
      padding:2px 0 6px;
      -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 16px,#000 calc(100% - 16px),transparent 100%);
      mask-image:linear-gradient(90deg,transparent 0,#000 16px,#000 calc(100% - 16px),transparent 100%);
    }
    .chip-nav::-webkit-scrollbar{display:none}
    .header-actions{order:2}
  }
  @media (max-width:520px){
    .brand-name{font-size:15.5px}
    .logo-mark{width:32px;height:32px;font-size:12px}
    .btn{height:44px;padding:0 18px;font-size:14.5px}
    .card-body{padding:16px}
    .panel,.flow-wrap,.side-note{padding:20px 18px}
    .faq-q{padding:16px 18px;font-size:15px}
    .faq-a{padding:0 18px 18px 30px}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important}
    .m-card:hover,.assure-card:hover,.btn:hover{transform:none !important}
  }