/* roulang page: index */
:root{
  --brand-900:#1B2447; --brand-700:#2A3A78; --brand-500:#3E5AA8; --brand-50:#F2F6FD;
  --starlight-500:#2BB3A3; --starlight-400:#4ECBB9;
  --sand-400:#E0A94B;
  --bg:#F7F9FC; --bg-alt:#EEF3FA; --card:#FFFFFF;
  --ink-900:#0F172A; --ink-700:#3F4A5C; --ink-500:#64748B;
  --line:#DDE5F0;
  --r-card:16px; --r-lg:20px; --r-btn:10px;
  --sh-card:0 1px 2px rgba(15,23,42,.04), 0 8px 24px -12px rgba(30,42,90,.10);
  --sh-hover:0 16px 40px -16px rgba(30,42,90,.20);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--bg);color:var(--ink-700);
  font-family:'PingFang SC','HarmonyOS Sans','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.8;letter-spacing:.01em;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{color:var(--ink-900);margin:0;line-height:1.35;letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid rgba(43,179,163,.55);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}
@media (min-width:1024px){.container{padding:0 48px;}}

/* ---------- 通用文字组件 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--starlight-500);
  text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--starlight-500);border-radius:2px;}
.section-title{font-size:clamp(1.45rem,2.4vw,1.9rem);font-weight:700;}
.section-sub{margin-top:12px;font-size:15px;color:var(--ink-500);max-width:720px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn-primary{background:var(--brand-900);color:#fff;box-shadow:0 6px 18px -10px rgba(27,36,71,.7);}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 14px 30px -14px rgba(27,36,71,.75);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:#fff;border-color:var(--line);color:var(--brand-900);}
.btn-outline:hover{border-color:var(--brand-500);background:var(--brand-50);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn-ghost{background:transparent;color:var(--brand-700);padding:0;min-height:auto;font-weight:600;}
.btn-ghost i{transition:transform .2s ease-out;}
.btn-ghost:hover i{transform:translateX(3px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(43,179,163,.12);color:var(--brand-700);
}
.badge-sand{background:rgba(224,169,75,.16);color:#8A6014;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.95);
  backdrop-filter:blur(6px);border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:24px;height:64px;}
@media (min-width:1024px){.nav-wrap{height:68px;}}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand-900);
  display:grid;place-items:center;color:var(--starlight-400);flex-shrink:0;
}
.logo-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:.01em;}
.logo-text b{color:var(--brand-700);font-weight:700;}
.nav-links{display:none;align-items:center;gap:26px;margin-left:8px;}
@media (min-width:1024px){.nav-links{display:flex;}}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink-700);padding:6px 0;transition:color .2s ease-out;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--starlight-500);transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out;
}
.nav-links a:hover{color:var(--brand-700);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--brand-900);font-weight:600;}
.nav-links a.active::after{transform:scaleX(1);}
.nav-side{margin-left:auto;display:none;align-items:center;gap:12px;}
@media (min-width:1024px){.nav-side{display:flex;}}
.icon-btn{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;color:var(--ink-500);cursor:pointer;transition:.2s ease-out;
}
.icon-btn:hover{color:var(--brand-700);border-color:var(--brand-500);background:var(--brand-50);}
.nav-toggle{
  margin-left:auto;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--brand-900);display:grid;place-items:center;cursor:pointer;
}
@media (min-width:1024px){.nav-toggle{display:none;}}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:#fff;}
.mobile-drawer.open{display:block;}
.mobile-drawer nav{padding:12px 20px 20px;display:flex;flex-direction:column;gap:4px;}
.mobile-drawer a{padding:12px 4px;border-bottom:1px solid var(--bg-alt);font-size:15px;color:var(--ink-700);}
.mobile-drawer a.active{color:var(--brand-900);font-weight:600;}
.mobile-drawer .btn{margin-top:14px;width:100%;}

/* ---------- 星点底纹 ---------- */
.starfield{
  background-image:
    radial-gradient(rgba(255,255,255,.35) 1.4px, transparent 1.5px),
    radial-gradient(rgba(255,255,255,.22) 1.2px, transparent 1.3px);
  background-size:180px 180px, 260px 260px;
  background-position:0 0, 90px 120px;
}
.starfield-light{
  background-image:radial-gradient(rgba(62,90,168,.16) 1.3px, transparent 1.4px);
  background-size:220px 220px;
}

/* ---------- Hero ---------- */
.hero{padding:44px 0 12px;}
@media (min-width:1024px){.hero{padding:64px 0 20px;}}
.hero-grid{display:grid;gap:36px;align-items:center;}
@media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:48px;}}
.hero h1{font-size:clamp(2rem,4.2vw,3.1rem);font-weight:700;letter-spacing:-.01em;margin-top:16px;}
.hero-lead{margin-top:18px;font-size:17px;color:var(--ink-700);max-width:560px;}
.hero-cta{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.trust-bar{
  margin-top:30px;display:flex;flex-wrap:wrap;gap:0 18px;font-size:14px;color:var(--ink-500);
}
.trust-bar span{display:flex;align-items:center;gap:8px;padding-right:18px;border-right:1px solid var(--line);}
.trust-bar span:last-child{border-right:none;padding-right:0;}
@media (max-width:520px){
  .trust-bar{flex-direction:column;gap:10px;}
  .trust-bar span{border-right:none;padding-right:0;}
}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:4/3;border-radius:var(--r-lg);box-shadow:var(--sh-hover);
  background:var(--bg-alt);
}
@media (max-width:1023px){.hero-visual img{aspect-ratio:16/9;max-height:320px;}}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(27,36,71,0) 40%,rgba(27,36,71,.28) 100%);
  pointer-events:none;
}
.hero-float{
  position:absolute;left:16px;bottom:16px;right:16px;background:#fff;border-radius:14px;
  padding:14px 16px;box-shadow:0 20px 48px -20px rgba(0,0,0,.35);z-index:2;
}
.hero-float h3{font-size:14px;font-weight:700;margin-bottom:8px;}
.hero-float ul li{
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-500);padding:5px 0;border-bottom:1px dashed var(--line);
}
.hero-float ul li:last-child{border-bottom:none;}
.hero-float ul li i{color:var(--starlight-500);font-size:11px;}

/* ---------- 卡片 ---------- */
.card{
  background:var(--card);border-radius:var(--r-card);box-shadow:var(--sh-card);
  padding:24px;display:flex;flex-direction:column;height:100%;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.qcard{background:#fff;border-radius:var(--r-card);box-shadow:var(--sh-card);padding:24px;display:flex;flex-direction:column;height:100%;transition:transform .2s ease-out,box-shadow .2s ease-out;}
.qcard:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.qicon{
  width:44px;height:44px;border-radius:12px;background:var(--bg-alt);color:var(--brand-700);
  display:grid;place-items:center;margin-bottom:18px;transition:background-color .2s ease-out,color .2s ease-out;
}
.qcard:hover .qicon{background:rgba(43,179,163,.14);color:var(--starlight-500);}
.qcard h3{font-size:17px;font-weight:600;}
.qcard p{margin-top:10px;font-size:14px;color:var(--ink-500);flex:1;}
.qmore{margin-top:16px;font-size:13px;font-weight:600;color:var(--brand-700);display:flex;align-items:center;gap:6px;}
.qmore i{transition:transform .2s ease-out;}
.qcard:hover .qmore i{transform:translateX(3px);}

/* ---------- 价值要点 ---------- */
.value-row{display:flex;gap:20px;padding:26px 0;border-bottom:1px solid var(--line);}
.value-row:first-child{padding-top:0;}
.value-row:last-child{border-bottom:none;padding-bottom:0;}
.value-num{
  font-size:13px;font-weight:700;color:var(--starlight-500);letter-spacing:.08em;
  min-width:38px;padding-top:4px;
}
.value-row h3{font-size:18px;font-weight:600;}
.value-row p{margin-top:8px;font-size:15px;color:var(--ink-500);}

/* ---------- 功能分组 ---------- */
.group-block{
  background:#fff;border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-card);
  display:flex;flex-direction:column;transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.group-block:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.group-block h3{font-size:18px;font-weight:600;margin-top:16px;}
.group-block p{margin-top:10px;font-size:14px;color:var(--ink-500);}
.shot{
  width:100%;aspect-ratio:16/9;border-radius:14px;background:var(--bg-alt);overflow:hidden;
}
.shot img{width:100%;height:100%;}
.group-divider{border-top:1px solid var(--line);margin:26px 0;}

/* ---------- 流程 ---------- */
.step{position:relative;padding-left:0;}
.step-dot{
  width:34px;height:34px;border-radius:999px;display:grid;place-items:center;
  background:rgba(43,179,163,.12);color:var(--brand-700);font-size:13px;font-weight:700;
}
.step h3{font-size:17px;font-weight:600;margin-top:16px;}
.step p{margin-top:8px;font-size:14px;color:var(--ink-500);}
.step-line{position:absolute;top:16px;left:34px;right:-16px;height:1px;border-top:1px dashed var(--line);}
@media (min-width:1024px){.step-line{display:block;}}
@media (max-width:1023px){.step-line{display:none;}}

/* ---------- 案例 ---------- */
.quote-card{background:#fff;border-radius:var(--r-card);box-shadow:var(--sh-card);padding:28px;display:flex;flex-direction:column;height:100%;}
.quote-mark{font-size:34px;line-height:1;color:var(--starlight-400);font-weight:700;}
.quote-card blockquote{margin:14px 0 0;font-size:17px;line-height:1.9;color:var(--ink-700);}
.quote-meta{margin-top:auto;padding-top:22px;display:flex;align-items:center;gap:12px;}
.avatar{width:40px;height:40px;border-radius:999px;background:var(--bg-alt);display:grid;place-items:center;color:var(--brand-700);font-weight:700;font-size:14px;}
.quote-meta strong{display:block;font-size:14px;color:var(--ink-900);}
.quote-meta span{font-size:13px;color:var(--ink-500);}
.mini-card{background:#fff;border-radius:var(--r-card);box-shadow:var(--sh-card);padding:22px;transition:transform .2s ease-out,box-shadow .2s ease-out;}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.mini-card h3{font-size:16px;font-weight:600;margin-top:12px;}
.mini-card p{margin-top:8px;font-size:14px;color:var(--ink-500);}

/* ---------- 价格 ---------- */
.price-card{
  background:#fff;border-radius:var(--r-card);border:1px solid var(--line);padding:28px 24px;
  display:flex;flex-direction:column;height:100%;position:relative;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.price-card.featured{border-color:var(--starlight-500);box-shadow:0 16px 40px -18px rgba(43,179,163,.35);}
.price-flag{
  position:absolute;top:-13px;left:24px;background:var(--starlight-500);color:#fff;
  font-size:12px;font-weight:600;padding:3px 12px;border-radius:999px;
}
.price-card h3{font-size:17px;font-weight:600;}
.price-amount{margin-top:14px;font-size:28px;font-weight:700;color:var(--brand-900);line-height:1.2;}
.price-amount span{font-size:13px;font-weight:400;color:var(--ink-500);margin-left:6px;}
.price-list{margin-top:20px;flex:1;display:flex;flex-direction:column;gap:12px;}
.price-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-700);line-height:1.65;}
.price-list i{color:var(--starlight-500);margin-top:4px;}
.price-card .btn{margin-top:24px;width:100%;}

/* ---------- 列表卡 ---------- */
.post-card{background:#fff;border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;display:flex;flex-direction:column;height:100%;transition:transform .2s ease-out,box-shadow .2s ease-out;}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.post-cover{aspect-ratio:16/9;background:var(--bg-alt);overflow:hidden;}
.post-cover img{width:100%;height:100%;transition:transform .35s ease-out;}
.post-card:hover .post-cover img{transform:scale(1.04);}
.post-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.post-body h3{
  font-size:18px;font-weight:600;margin-top:12px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-body p{
  margin-top:10px;font-size:14px;color:var(--ink-500);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-500);border-top:1px solid var(--bg-alt);
}
.post-foot i{color:var(--brand-700);}

/* ---------- FAQ ---------- */
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 4px 20px 14px;position:relative;
  font-size:16px;font-weight:600;color:var(--ink-900);display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;
  background:transparent;transition:background-color .2s ease-out;
}
.faq-item[open] summary::before{background:var(--starlight-500);}
.faq-item summary i{color:var(--ink-400);transition:transform .2s ease-out;font-size:13px;}
.faq-item[open] summary i{transform:rotate(180deg);color:var(--starlight-500);}
.faq-answer{padding:0 4px 22px 14px;font-size:15px;color:var(--ink-700);line-height:1.9;}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:var(--brand-900);border-radius:var(--r-lg);padding:44px 28px;color:#fff;
  display:flex;flex-direction:column;gap:22px;align-items:flex-start;
}
@media (min-width:768px){.cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:52px 44px;}}
.cta-band h2{color:#fff;font-size:clamp(1.3rem,2.2vw,1.7rem);font-weight:700;}
.cta-band p{margin-top:10px;color:rgba(255,255,255,.72);font-size:15px;max-width:560px;}
.cta-band .btn{background:#fff;color:var(--brand-900);flex-shrink:0;}
.cta-band .btn:hover{background:var(--starlight-400);color:var(--brand-900);}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:64px;padding:56px 0 28px;}
.footer-grid{display:grid;gap:34px;}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;}}
.footer-grid h3{font-size:14px;font-weight:700;color:var(--ink-900);margin-bottom:16px;letter-spacing:.04em;}
.footer-grid p{font-size:14px;color:var(--ink-500);}
.footer-grid li{margin-bottom:10px;}
.footer-grid a{font-size:14px;color:var(--ink-500);transition:color .2s ease-out;}
.footer-grid a:hover{color:var(--starlight-500);}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-direction:column;gap:10px;font-size:13px;color:var(--ink-500);
}
@media (min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}}
.empty-state{
  grid-column:1/-1;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);
  padding:48px 24px;text-align:center;color:var(--ink-500);
}
.empty-state i{font-size:26px;color:var(--starlight-500);}
.empty-state p{margin-top:14px;font-size:15px;}

/* roulang page: article */
:root{
    --brand-900:#1B2447;
    --brand-700:#2A3A78;
    --brand-500:#3E5AA8;
    --brand-100:#E3E9F7;
    --starlight-500:#2BB3A3;
    --starlight-400:#4ECBB9;
    --sand-400:#E0A94B;
    --ink-900:#0F172A;
    --ink-700:#3F4A5C;
    --ink-500:#64748B;
    --ink-400:#94A3B8;
    --line:#DDE5F0;
    --bg:#F7F9FC;
    --bg-alt:#EEF3FA;
    --card:#FFFFFF;
    --radius-card:16px;
    --radius-lg:20px;
    --radius-btn:10px;
    --shadow-sm:0 1px 2px rgba(15,23,42,.04), 0 8px 24px -12px rgba(30,42,90,.10);
    --shadow-hover:0 16px 40px -16px rgba(30,42,90,.20);
    --shadow-dark:0 20px 48px -20px rgba(0,0,0,.35);
    --focus:0 0 0 2px rgba(43,179,163,.55);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink-700);
    font-family:'PingFang SC','HarmonyOS Sans','Microsoft YaHei',system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;}
  button{font-family:inherit;}
  h1,h2,h3,h4{margin:0;}
  p{margin:0;}
  ul,ol{margin:0;padding:0;}
  :focus-visible{outline:2px solid rgba(43,179,163,.55);outline-offset:2px;}

  .container{
    width:100%;
    max-width:1240px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }
  @media (min-width:768px){ .container{padding-left:32px;padding-right:32px;} }
  @media (min-width:1024px){ .container{padding-left:48px;padding-right:48px;} }

  /* ---------- header / nav ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(255,255,255,.95);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    height:64px;
  }
  @media (min-width:1024px){ .header-inner{height:68px;} }

  .logo{
    display:inline-flex;
    align-items:center;
    gap:10px;
    text-decoration:none;
    color:var(--brand-900);
    font-size:17px;
    font-weight:700;
    letter-spacing:-.01em;
    white-space:nowrap;
  }
  .logo-mark{
    width:34px;height:34px;
    border-radius:10px;
    background:var(--brand-900);
    color:#fff;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    flex:none;
  }
  .logo-text b{color:var(--starlight-500);font-weight:700;}

  .nav-links{
    display:flex;
    align-items:center;
    gap:28px;
  }
  .nav-links a{
    position:relative;
    display:inline-block;
    padding:6px 0;
    font-size:15px;
    color:var(--ink-700);
    text-decoration:none;
    transition:color .2s ease-out;
  }
  .nav-links a:hover{color:var(--brand-900);}
  .nav-links a.active{color:var(--brand-900);font-weight:600;}
  .nav-links a.active::after{
    content:"";
    position:absolute;
    left:0;right:0;bottom:-2px;
    height:2px;
    border-radius:2px;
    background:var(--starlight-500);
  }

  .header-actions{display:flex;align-items:center;gap:10px;}
  .icon-btn{
    width:38px;height:38px;
    display:inline-flex;align-items:center;justify-content:center;
    border-radius:10px;
    border:1px solid var(--line);
    background:#fff;
    color:var(--ink-500);
    cursor:pointer;
    transition:all .2s ease-out;
  }
  .icon-btn:hover{color:var(--brand-900);border-color:var(--brand-500);background:#F2F6FD;}
  .nav-toggle{
    display:none;
    width:38px;height:38px;
    align-items:center;justify-content:center;
    border-radius:10px;
    border:1px solid var(--line);
    background:#fff;
    color:var(--brand-900);
    cursor:pointer;
  }

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:44px;
    padding:0 22px;
    border-radius:var(--radius-btn);
    font-size:15px;
    font-weight:600;
    text-decoration:none;
    cursor:pointer;
    border:1px solid transparent;
    transition:transform .2s ease-out, background-color .2s ease-out, box-shadow .2s ease-out, border-color .2s ease-out, color .2s ease-out;
  }
  .btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
  .btn-primary{background:var(--brand-900);color:#fff;box-shadow:var(--shadow-sm);}
  .btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:var(--shadow-hover);}
  .btn-primary:active{transform:translateY(0);}
  .btn-secondary{background:#fff;color:var(--brand-900);border-color:var(--line);}
  .btn-secondary:hover{border-color:var(--brand-500);background:#F2F6FD;transform:translateY(-1px);}
  .btn-ghost{
    background:transparent;color:var(--brand-700);padding:0 4px;min-height:auto;font-weight:600;
  }
  .btn-ghost svg{transition:transform .2s ease-out;}
  .btn-ghost:hover{color:var(--starlight-500);}
  .btn-ghost:hover svg{transform:translateX(2px);}

  /* ---------- shared bits ---------- */
  .badge{
    display:inline-flex;
    align-items:center;
    padding:4px 12px;
    border-radius:999px;
    font-size:12px;
    font-weight:600;
    line-height:1.6;
    background:rgba(43,179,163,.12);
    color:var(--brand-700);
  }
  .eyebrow{
    display:inline-block;
    font-size:12px;
    font-weight:600;
    letter-spacing:.08em;
    color:var(--starlight-500);
    margin-bottom:10px;
  }
  .section-title{
    font-size:clamp(1.45rem,2.4vw,1.9rem);
    font-weight:700;
    line-height:1.4;
    letter-spacing:-.01em;
    color:var(--ink-900);
  }
  .section-desc{
    margin-top:10px;
    font-size:15px;
    color:var(--ink-500);
    line-height:1.75;
  }

  /* ---------- breadcrumb & article head ---------- */
  .article-top{
    background:linear-gradient(180deg,#FFFFFF 0%, var(--bg) 100%);
    border-bottom:1px solid var(--line);
    padding:28px 0 40px;
  }
  .breadcrumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px;
    font-size:14px;
    color:var(--ink-500);
  }
  .breadcrumb a{color:var(--ink-500);text-decoration:none;transition:color .2s ease-out;}
  .breadcrumb a:hover{color:var(--starlight-500);}
  .breadcrumb .sep{color:var(--ink-400);}
  .breadcrumb .current{color:var(--ink-700);}

  .article-title{
    margin-top:18px;
    font-size:clamp(1.6rem,2.6vw,2.25rem);
    font-weight:700;
    line-height:1.35;
    letter-spacing:-.01em;
    color:var(--ink-900);
    max-width:900px;
  }
  .article-meta{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:14px;
    margin-top:18px;
    font-size:14px;
    color:var(--ink-500);
  }
  .article-meta .divider{width:1px;height:12px;background:var(--line);}
  .article-cover{
    margin-top:26px;
    border-radius:var(--radius-card);
    overflow:hidden;
    background:var(--bg-alt);
    aspect-ratio:21/9;
    width:100%;
  }
  .article-cover img{width:100%;height:100%;object-fit:cover;}

  /* ---------- article layout ---------- */
  .article-layout{
    display:grid;
    grid-template-columns:minmax(0,1fr);
    gap:40px;
    padding:44px 0 0;
  }
  @media (min-width:1024px){
    .article-layout{
      grid-template-columns:minmax(0,800px) 280px;
      justify-content:space-between;
      gap:48px;
      padding-top:56px;
    }
  }

  .article-content{
    font-size:17px;
    line-height:1.9;
    letter-spacing:.01em;
    color:var(--ink-700);
  }
  .article-content > *:first-child{margin-top:0;}
  .article-content p{margin:0 0 1.2em;}
  .article-content h2{
    position:relative;
    margin:40px 0 16px;
    padding-left:14px;
    font-size:1.5rem;
    font-weight:700;
    line-height:1.45;
    color:var(--ink-900);
  }
  .article-content h2::before{
    content:"";
    position:absolute;
    left:0;top:.28em;bottom:.28em;
    width:3px;
    border-radius:2px;
    background:var(--starlight-500);
  }
  .article-content h3{
    margin:28px 0 12px;
    font-size:1.15rem;
    font-weight:600;
    color:var(--ink-900);
  }
  .article-content blockquote{
    margin:24px 0;
    padding:16px 20px;
    background:var(--bg);
    border-left:3px solid var(--line);
    border-radius:0 10px 10px 0;
    color:var(--ink-700);
  }
  .article-content blockquote p:last-child{margin-bottom:0;}
  .article-content ul,
  .article-content ol{margin:0 0 1.2em;}
  .article-content ul{list-style:none;}
  .article-content ul li{position:relative;padding-left:22px;margin-bottom:8px;}
  .article-content ul li::before{
    content:"";
    position:absolute;
    left:4px;top:.72em;
    width:6px;height:6px;
    border-radius:2px;
    background:var(--starlight-500);
  }
  .article-content ol{list-style:none;counter-reset:oli;}
  .article-content ol li{
    position:relative;
    padding-left:30px;
    margin-bottom:10px;
    counter-increment:oli;
  }
  .article-content ol li::before{
    content:counter(oli);
    position:absolute;
    left:0;top:.34em;
    width:20px;height:20px;
    display:flex;align-items:center;justify-content:center;
    border-radius:6px;
    background:rgba(43,179,163,.12);
    color:var(--brand-700);
    font-size:12px;
    font-weight:700;
  }
  .article-content img{border-radius:14px;margin:12px 0;}
  .article-content a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
  .article-content a:hover{color:var(--starlight-500);}
  .article-content table{
    width:100%;
    border-collapse:collapse;
    margin:22px 0;
    font-size:15px;
    background:#fff;
    border-radius:12px;
    overflow:hidden;
  }
  .article-content th{
    background:var(--bg-alt);
    text-align:left;
    padding:12px 14px;
    border:1px solid var(--line);
    color:var(--ink-900);
    font-weight:600;
  }
  .article-content td{
    padding:12px 14px;
    border:1px solid var(--line);
    color:var(--ink-700);
  }
  .article-content hr{
    border:none;
    border-top:1px solid var(--line);
    margin:32px 0;
  }

  .empty-state{
    padding:56px 24px;
    border:1px dashed var(--line);
    border-radius:var(--radius-card);
    background:#fff;
    text-align:center;
  }
  .empty-state svg{color:var(--starlight-500);margin:0 auto 16px;}
  .empty-state h2{font-size:1.2rem;font-weight:600;color:var(--ink-900);}
  .empty-state p{margin-top:8px;font-size:14px;color:var(--ink-500);}

  /* ---------- sidebar ---------- */
  .article-side{align-self:start;}
  @media (min-width:1024px){
    .article-side{position:sticky;top:92px;}
  }
  .side-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:20px;
    box-shadow:var(--shadow-sm);
    margin-bottom:20px;
  }
  .side-card h3{
    font-size:15px;
    font-weight:600;
    color:var(--ink-900);
    margin-bottom:14px;
  }
  .toc-list{list-style:none;border-left:1px solid var(--line);}
  .toc-list li a{
    display:block;
    padding:6px 0 6px 14px;
    margin-left:-1px;
    border-left:2px solid transparent;
    font-size:14px;
    line-height:1.6;
    color:var(--ink-500);
    text-decoration:none;
    transition:color .2s ease-out,border-color .2s ease-out;
  }
  .toc-list li a:hover{color:var(--brand-900);}
  .toc-list li a.current{color:var(--starlight-500);border-left-color:var(--starlight-500);font-weight:600;}

  .side-links{list-style:none;display:flex;flex-direction:column;gap:14px;}
  .side-links a{
    display:block;
    text-decoration:none;
    transition:transform .2s ease-out;
  }
  .side-links a:hover{transform:translateY(-2px);}
  .side-links .thumb{
    border-radius:12px;
    overflow:hidden;
    background:var(--bg-alt);
    aspect-ratio:16/9;
    margin-bottom:8px;
  }
  .side-links .thumb img{width:100%;height:100%;object-fit:cover;}
  .side-links strong{
    display:block;
    font-size:14px;
    font-weight:600;
    line-height:1.6;
    color:var(--ink-900);
  }
  .side-links a:hover strong{color:var(--brand-700);}

  /* ---------- tags / prev-next / related ---------- */
  .article-block{padding:48px 0 0;}
  .tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
  .tag-row .label{font-size:14px;color:var(--ink-500);margin-right:4px;}
  .tag{
    display:inline-flex;
    align-items:center;
    padding:5px 14px;
    border-radius:999px;
    font-size:13px;
    font-weight:600;
    background:var(--brand-100);
    color:var(--brand-700);
    text-decoration:none;
    transition:background-color .2s ease-out,color .2s ease-out;
  }
  .tag:hover{background:rgba(43,179,163,.16);color:var(--brand-900);}

  .divider-line{border:none;border-top:1px solid var(--line);margin:36px 0;}

  .pn-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:16px;
  }
  @media (min-width:768px){ .pn-grid{grid-template-columns:1fr 1fr;} }
  .pn-card{
    display:flex;
    flex-direction:column;
    gap:8px;
    padding:20px 22px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    text-decoration:none;
    box-shadow:var(--shadow-sm);
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .pn-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-500);}
  .pn-card .dir{font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--starlight-500);}
  .pn-card strong{font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.6;}
  .pn-card span{font-size:14px;color:var(--ink-500);}

  .related-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:24px;
  }
  @media (min-width:640px){ .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
  @media (min-width:1024px){ .related-grid{grid-template-columns:repeat(3,minmax(0,1fr));} }
  .news-card{
    display:flex;
    flex-direction:column;
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    overflow:hidden;
    box-shadow:var(--shadow-sm);
    text-decoration:none;
    transition:transform .2s ease-out,box-shadow .2s ease-out;
  }
  .news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
  .news-card .cover{aspect-ratio:16/9;background:var(--bg-alt);overflow:hidden;}
  .news-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
  .news-card:hover .cover img{transform:scale(1.03);}
  .news-card .body{padding:20px;display:flex;flex-direction:column;flex:1;gap:10px;}
  .news-card h3{
    font-size:18px;
    font-weight:600;
    line-height:1.55;
    color:var(--ink-900);
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .news-card p{
    font-size:14px;
    line-height:1.7;
    color:var(--ink-500);
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .news-card .meta{
    margin-top:auto;
    display:flex;
    align-items:center;
    justify-content:space-between;
    font-size:13px;
    color:var(--ink-500);
    padding-top:8px;
  }

  /* ---------- CTA band ---------- */
  .cta-band{
    position:relative;
    overflow:hidden;
    background:var(--brand-900);
    border-radius:var(--radius-lg);
    padding:44px 28px;
    margin:64px 0 0;
    color:#fff;
  }
  .cta-band::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:radial-gradient(rgba(255,255,255,.35) 1px, transparent 1px);
    background-size:180px 160px;
    opacity:.28;
    pointer-events:none;
  }
  .cta-inner{
    position:relative;
    display:flex;
    flex-direction:column;
    gap:20px;
    align-items:flex-start;
  }
  @media (min-width:768px){
    .cta-band{padding:56px 48px;}
    .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;}
  }
  .cta-inner h2{font-size:clamp(1.25rem,2vw,1.65rem);font-weight:700;color:#fff;line-height:1.5;}
  .cta-inner p{margin-top:8px;font-size:15px;color:rgba(255,255,255,.78);line-height:1.75;max-width:620px;}

  /* ---------- footer ---------- */
  .site-footer{
    margin-top:88px;
    background:#fff;
    border-top:1px solid var(--line);
    padding:56px 0 24px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:32px;
  }
  @media (min-width:640px){ .footer-grid{grid-template-columns:1fr 1fr;} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;} }
  .footer-grid h3{
    font-size:15px;
    font-weight:600;
    color:var(--ink-900);
    margin-bottom:16px;
  }
  .footer-grid p{
    font-size:14px;
    line-height:1.75;
    color:var(--ink-500);
    max-width:320px;
  }
  .footer-grid ul{list-style:none;display:flex;flex-direction:column;gap:10px;}
  .footer-grid ul a{
    font-size:14px;
    color:var(--ink-500);
    text-decoration:none;
    transition:color .2s ease-out;
  }
  .footer-grid ul a:hover{color:var(--starlight-500);}
  .footer-bottom{
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    gap:12px;
    margin-top:40px;
    padding-top:20px;
    border-top:1px solid var(--line);
    font-size:14px;
    color:var(--ink-500);
  }

  /* ---------- responsive nav ---------- */
  @media (max-width:900px){
    .nav-toggle{display:inline-flex;}
    .header-actions .icon-btn{display:none;}
    .nav-links{
      position:fixed;
      top:64px;
      left:0;
      right:0;
      flex-direction:column;
      align-items:stretch;
      gap:0;
      padding:8px 20px 20px;
      background:#fff;
      border-bottom:1px solid var(--line);
      box-shadow:var(--shadow-sm);
      opacity:0;
      visibility:hidden;
      transform:translateY(-8px);
      transition:opacity .2s ease-out, transform .2s ease-out, visibility .2s;
      max-height:calc(100vh - 64px);
      overflow-y:auto;
    }
    .nav-links.is-open{opacity:1;visibility:visible;transform:translateY(0);}
    .nav-links a{padding:14px 4px;border-bottom:1px solid var(--line);}
    .nav-links a:last-child{border-bottom:none;}
    .nav-links a.active::after{display:none;}
  }
  @media (min-width:901px){
    .nav-toggle{display:none;}
  }
  @media (max-width:520px){
    .article-meta{gap:10px;}
    .brand-cta{width:100%;}
  }

/* roulang page: category2 */
:root{
    --brand-900:#1B2447;
    --brand-700:#2A3A78;
    --brand-500:#3E5AA8;
    --brand-100:#DCE4F6;
    --brand-50:#EEF2FB;
    --starlight-500:#2BB3A3;
    --starlight-400:#4ECBB9;
    --starlight-soft:rgba(43,179,163,.12);
    --sand-400:#E0A94B;
    --sand-soft:rgba(224,169,75,.16);
    --bg:#F7F9FC;
    --bg-alt:#EEF3FA;
    --card:#FFFFFF;
    --ink-900:#0F172A;
    --ink-700:#3F4A5C;
    --ink-500:#64748B;
    --ink-400:#94A3B8;
    --line:#DDE5F0;
    --radius-lg:20px;
    --radius:16px;
    --radius-sm:10px;
    --shadow-sm:0 1px 2px rgba(15,23,42,.04), 0 8px 24px -12px rgba(30,42,90,.10);
    --shadow-lg:0 16px 40px -16px rgba(30,42,90,.20);
    --shadow-dark:0 20px 48px -20px rgba(0,0,0,.35);
    --ease:200ms ease-out;
  }

  *,*::before,*::after{ box-sizing:border-box; }
  html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.8;
    color:var(--ink-700);
    background:var(--bg);
  }
  img{ display:block; max-width:100%; height:auto; }
  a{ color:inherit; text-decoration:none; transition:color var(--ease), background-color var(--ease), border-color var(--ease); }
  ul,ol{ margin:0; padding:0; list-style:none; }
  h1,h2,h3,h4,p{ margin:0; }
  button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
  :focus-visible{ outline:2px solid rgba(43,179,163,.55); outline-offset:2px; }

  .container{
    width:100%;
    max-width:1240px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }

  /* ---------- header / nav ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(255,255,255,.95);
    backdrop-filter:blur(6px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{
    display:flex;
    align-items:center;
    gap:24px;
    height:64px;
  }
  .logo{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:17px;
    font-weight:700;
    color:var(--ink-900);
    letter-spacing:-.01em;
    flex-shrink:0;
  }
  .logo-mark{
    width:34px;
    height:34px;
    border-radius:10px;
    background:var(--brand-900);
    color:#fff;
    display:grid;
    place-items:center;
    box-shadow:0 8px 20px -10px rgba(27,36,71,.6);
  }
  .logo-text b{ color:var(--brand-900); }
  .logo-text{ color:var(--ink-700); font-weight:600; }

  .nav-links{
    display:flex;
    align-items:center;
    gap:4px;
    margin-left:12px;
  }
  .nav-links a{
    position:relative;
    padding:9px 13px;
    font-size:15px;
    color:var(--ink-700);
    border-radius:var(--radius-sm);
    white-space:nowrap;
  }
  .nav-links a:hover{ color:var(--brand-900); background:var(--brand-50); }
  .nav-links a.active{ color:var(--brand-900); font-weight:600; }
  .nav-links a.active::after{
    content:"";
    position:absolute;
    left:13px;
    bottom:2px;
    width:18px;
    height:2px;
    border-radius:2px;
    background:var(--starlight-500);
  }

  .header-actions{
    display:flex;
    align-items:center;
    gap:10px;
    margin-left:auto;
    flex-shrink:0;
  }
  .icon-btn{
    width:40px;
    height:40px;
    border:1px solid var(--line);
    border-radius:var(--radius-sm);
    background:#fff;
    color:var(--ink-500);
    display:grid;
    place-items:center;
    transition:all var(--ease);
  }
  .icon-btn:hover{ color:var(--brand-900); border-color:var(--brand-500); background:var(--brand-50); }

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:44px;
    padding:0 22px;
    border-radius:var(--radius-sm);
    font-size:15px;
    font-weight:600;
    border:1px solid transparent;
    transition:all var(--ease);
    text-align:center;
  }
  .btn-primary{ background:var(--brand-900); color:#fff; }
  .btn-primary:hover{ background:var(--brand-700); transform:translateY(-1px); box-shadow:0 12px 28px -14px rgba(27,36,71,.75); color:#fff; }
  .btn-primary:active{ transform:translateY(0); box-shadow:none; }
  .btn-outline{ background:#fff; color:var(--brand-900); border-color:var(--line); }
  .btn-outline:hover{ border-color:var(--brand-500); background:#F2F6FD; color:var(--brand-900); }
  .btn-ghost{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:15px;
    font-weight:600;
    color:var(--brand-700);
    min-height:44px;
  }
  .btn-ghost svg{ transition:transform var(--ease); }
  .btn-ghost:hover{ color:var(--starlight-500); }
  .btn-ghost:hover svg{ transform:translateX(2px); }
  .btn-sm{ min-height:40px; padding:0 18px; font-size:14px; }

  .nav-toggle{
    display:none;
    width:40px;
    height:40px;
    border:1px solid var(--line);
    border-radius:var(--radius-sm);
    color:var(--brand-900);
    place-items:center;
    background:#fff;
  }

  /* ---------- page banner ---------- */
  .page-banner{
    position:relative;
    min-height:260px;
    display:flex;
    align-items:center;
    overflow:hidden;
    border-bottom:1px solid var(--line);
  }
  .banner-media{
    position:absolute;
    inset:0;
    background-image:url('/assets/images/backpic/back-2.webp');
    background-size:cover;
    background-position:center;
  }
  .banner-media::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(100deg, rgba(247,249,252,.95) 0%, rgba(247,249,252,.82) 46%, rgba(247,249,252,.55) 100%);
  }
  .banner-inner{ position:relative; z-index:2; padding-top:52px; padding-bottom:52px; }
  .breadcrumb{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:14px;
    color:var(--ink-500);
    margin-bottom:16px;
  }
  .breadcrumb a:hover{ color:var(--starlight-500); }
  .breadcrumb span.sep{ color:var(--ink-400); }
  .page-banner h1{
    font-size:clamp(1.6rem,2.6vw,2.25rem);
    font-weight:700;
    line-height:1.35;
    letter-spacing:-.01em;
    color:var(--ink-900);
    max-width:760px;
  }
  .page-banner p{
    margin-top:14px;
    max-width:640px;
    font-size:16px;
    color:var(--ink-700);
  }
  .banner-meta{
    display:flex;
    flex-wrap:wrap;
    gap:10px 18px;
    margin-top:20px;
    font-size:13px;
    color:var(--ink-500);
  }
  .banner-meta span{ display:inline-flex; align-items:center; gap:6px; }
  .dot{
    width:7px;height:7px;border-radius:50%;
    background:var(--starlight-500);
    display:inline-block;
  }

  /* ---------- sections ---------- */
  .section{ padding:56px 0; }
  .section-alt{ background:var(--bg-alt); }
  .section-head{ max-width:760px; margin-bottom:36px; }
  .section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:12px;
    font-weight:600;
    letter-spacing:.08em;
    color:var(--starlight-500);
    margin-bottom:12px;
  }
  .eyebrow::before{
    content:"";
    width:16px;height:2px;border-radius:2px;
    background:var(--starlight-500);
  }
  .section-head.center .eyebrow::before{ display:none; }
  .section-head h2{
    font-size:clamp(1.45rem,2.4vw,1.9rem);
    font-weight:700;
    line-height:1.4;
    color:var(--ink-900);
    letter-spacing:-.01em;
  }
  .section-head p{
    margin-top:12px;
    font-size:15px;
    color:var(--ink-500);
  }

  .badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:4px 12px;
    border-radius:999px;
    font-size:12px;
    font-weight:600;
    background:var(--starlight-soft);
    color:var(--brand-700);
    white-space:nowrap;
  }
  .badge-warn{ background:var(--sand-soft); color:#8A5A0B; }

  /* ---------- status panel ---------- */
  .status-panel{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius);
    box-shadow:var(--shadow-sm);
    padding:8px 28px;
  }
  .status-list li{
    display:grid;
    grid-template-columns:44px 1fr auto;
    gap:18px;
    align-items:center;
    padding:22px 0;
    border-top:1px solid var(--line);
  }
  .status-list li:first-child{ border-top:0; }
  .status-icon{
    width:44px;height:44px;
    border-radius:12px;
    display:grid;place-items:center;
    background:var(--brand-50);
    color:var(--brand-700);
  }
  .status-body h3{
    font-size:18px;
    font-weight:600;
    color:var(--ink-900);
    line-height:1.5;
  }
  .status-body p{
    margin-top:6px;
    font-size:14px;
    color:var(--ink-500);
    line-height:1.7;
  }

  /* ---------- zigzag ---------- */
  .zig{ display:grid; gap:56px; }
  .zig-row{
    display:grid;
    grid-template-columns:repeat(12,1fr);
    gap:40px;
    align-items:center;
  }
  .zig-media{ grid-column:span 7; }
  .zig-text{ grid-column:span 5; }
  .zig-row.reverse .zig-media{ grid-column:span 7; order:2; }
  .zig-row.reverse .zig-text{ order:1; }
  .zig-media img{
    width:100%;
    aspect-ratio:16/11;
    object-fit:cover;
    border-radius:var(--radius-lg);
    background:var(--bg-alt);
    box-shadow:var(--shadow-sm);
  }
  .zig-text h3{
    font-size:clamp(1.2rem,1.8vw,1.5rem);
    font-weight:700;
    line-height:1.45;
    color:var(--ink-900);
    letter-spacing:-.01em;
  }
  .zig-text > p{
    margin-top:12px;
    font-size:15.5px;
    color:var(--ink-700);
  }
  .tick-list{ margin-top:18px; display:grid; gap:10px; }
  .tick-list li{
    display:flex;
    gap:10px;
    align-items:flex-start;
    font-size:15px;
    color:var(--ink-700);
  }
  .tick-list li svg{ flex-shrink:0; margin-top:6px; color:var(--starlight-500); }

  /* ---------- tips ---------- */
  .tips-grid{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:20px;
  }
  .tip-card{
    background:var(--card);
    border-radius:14px;
    border-left:4px solid var(--starlight-500);
    box-shadow:var(--shadow-sm);
    padding:22px 24px;
    transition:box-shadow var(--ease), transform var(--ease);
  }
  .tip-card:hover{ box-shadow:var(--shadow-lg); transform:translateY(-4px); }
  .tip-card.warn{ border-left-color:var(--sand-400); }
  .tip-card h3{
    font-size:17px;
    font-weight:600;
    color:var(--ink-900);
    line-height:1.5;
  }
  .tip-card p{
    margin-top:8px;
    font-size:14.5px;
    color:var(--ink-500);
    line-height:1.75;
  }

  /* ---------- checklist ---------- */
  .checklist{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:14px;
  }
  .checklist li{
    display:flex;
    align-items:flex-start;
    gap:12px;
    padding:16px 18px;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:12px;
    font-size:15px;
    color:var(--ink-700);
    transition:border-color var(--ease), box-shadow var(--ease);
  }
  .checklist li:hover{ border-color:var(--starlight-400); box-shadow:var(--shadow-sm); }
  .checklist li svg{ flex-shrink:0; margin-top:5px; color:var(--starlight-500); }

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;
    overflow:hidden;
    background:var(--brand-900);
    border-radius:var(--radius-lg);
    padding:52px 40px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:28px;
    color:#fff;
    box-shadow:var(--shadow-dark);
  }
  .cta-band::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:
      radial-gradient(circle at 12% 30%, rgba(255,255,255,.35) 0 1.5px, transparent 1.6px),
      radial-gradient(circle at 62% 74%, rgba(255,255,255,.28) 0 1.5px, transparent 1.6px),
      radial-gradient(circle at 86% 22%, rgba(78,203,185,.55) 0 1.5px, transparent 1.6px),
      radial-gradient(circle at 38% 84%, rgba(255,255,255,.22) 0 1.5px, transparent 1.6px);
    pointer-events:none;
  }
  .cta-band > *{ position:relative; z-index:2; }
  .cta-band h2{
    font-size:clamp(1.35rem,2.1vw,1.75rem);
    font-weight:700;
    line-height:1.45;
    letter-spacing:-.01em;
  }
  .cta-band p{
    margin-top:10px;
    font-size:15px;
    color:rgba(255,255,255,.78);
    max-width:620px;
  }
  .cta-band .btn{ background:#fff; color:var(--brand-900); }
  .cta-band .btn:hover{ background:#EAF1FB; color:var(--brand-900); transform:translateY(-1px); box-shadow:0 14px 30px -16px rgba(0,0,0,.6); }
  .back-home{
    display:flex;
    justify-content:center;
    margin-top:24px;
  }

  /* ---------- footer ---------- */
  .site-footer{
    background:#fff;
    border-top:1px solid var(--line);
    padding:56px 0 24px;
    margin-top:56px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1fr;
    gap:32px;
  }
  .site-footer .logo{ margin-bottom:16px; }
  .site-footer p{
    font-size:14px;
    color:var(--ink-500);
    line-height:1.8;
    max-width:320px;
  }
  .site-footer h3{
    font-size:15px;
    font-weight:600;
    color:var(--ink-900);
    margin-bottom:16px;
  }
  .site-footer ul li{ margin-bottom:11px; }
  .site-footer ul a{
    font-size:14px;
    color:var(--ink-700);
  }
  .site-footer ul a:hover{ color:var(--starlight-500); }
  .footer-bottom{
    margin-top:36px;
    padding-top:20px;
    border-top:1px solid var(--line);
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:12px;
    flex-wrap:wrap;
    font-size:13px;
    color:var(--ink-500);
  }

  /* ---------- responsive ---------- */
  @media (max-width:1023px){
    .container{ padding-left:32px; padding-right:32px; }
    .section{ padding:64px 0; }
    .zig-row{ grid-template-columns:1fr; gap:24px; }
    .zig-media,.zig-text,.zig-row.reverse .zig-media,.zig-row.reverse .zig-text{
      grid-column:span 1;
      order:0;
    }
    .zig-media img{ aspect-ratio:16/9; }
    .footer-grid{ grid-template-columns:1fr 1fr; gap:28px; }
    .cta-band{ flex-direction:column; align-items:flex-start; padding:44px 32px; }
  }

  @media (max-width:900px){
    .nav-toggle{ display:grid; }
    .nav-links{
      position:fixed;
      top:64px;
      left:0;
      right:0;
      flex-direction:column;
      align-items:stretch;
      gap:2px;
      margin-left:0;
      padding:14px 20px 22px;
      background:#fff;
      border-bottom:1px solid var(--line);
      box-shadow:0 24px 44px -26px rgba(30,42,90,.35);
      transform:translateY(-10px);
      opacity:0;
      visibility:hidden;
      transition:opacity var(--ease), transform var(--ease), visibility var(--ease);
      max-height:calc(100vh - 64px);
      overflow-y:auto;
    }
    .nav-links.open{ transform:none; opacity:1; visibility:visible; }
    .nav-links a{ padding:13px 14px; font-size:16px; }
    .nav-links a.active::after{ left:14px; bottom:8px; }
  }

  @media (max-width:767px){
    .container{ padding-left:20px; padding-right:20px; }
    .section{ padding:52px 0; }
    .page-banner{ min-height:240px; }
    .banner-inner{ padding-top:44px; padding-bottom:44px; }
    .status-panel{ padding:6px 20px; }
    .status-list li{
      grid-template-columns:40px 1fr;
      gap:14px;
      align-items:flex-start;
      padding:20px 0;
    }
    .status-list li .badge{ grid-column:2; justify-self:start; margin-top:2px; }
    .status-icon{ width:40px; height:40px; }
    .tips-grid{ grid-template-columns:1fr; }
    .checklist{ grid-template-columns:1fr; }
    .cta-band{ padding:36px 24px; border-radius:var(--radius); }
    .cta-band .btn{ width:100%; }
    .footer-grid{ grid-template-columns:1fr; gap:26px; }
    .site-footer p{ max-width:none; }
    .icon-btn{ display:none; }
  }

/* roulang page: category1 */
:root{
    --brand-900:#1B2447;
    --brand-700:#2A3A78;
    --brand-500:#3E5AA8;
    --brand-100:#E3EAF8;
    --brand-50:#F2F6FD;
    --starlight-500:#2BB3A3;
    --starlight-400:#4ECBB9;
    --sand-400:#E0A94B;
    --bg:#F7F9FC;
    --card:#FFFFFF;
    --alt:#EEF3FA;
    --ink-900:#0F172A;
    --ink-700:#3F4A5C;
    --ink-500:#64748B;
    --ink-400:#94A3B8;
    --line:#DDE5F0;
    --radius-card:16px;
    --radius-big:20px;
    --radius-btn:10px;
    --shadow-soft:0 1px 2px rgba(15,23,42,.04), 0 8px 24px -12px rgba(30,42,90,.10);
    --shadow-lift:0 16px 40px -16px rgba(30,42,90,.20);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.8;
    color:var(--ink-700);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;cursor:pointer;border:none;background:none;}
  h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.35;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:2px solid rgba(43,179,163,.55);outline-offset:2px;border-radius:4px;}

  .container{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px;}
  @media (min-width:768px){.container{padding-left:32px;padding-right:32px;}}
  @media (min-width:1024px){.container{padding-left:48px;padding-right:48px;}}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.95);
    backdrop-filter:blur(6px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{display:flex;align-items:center;gap:20px;height:64px;}
  @media (min-width:1024px){.header-inner{height:68px;}}
  .logo{
    display:inline-flex;align-items:center;gap:10px;
    font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;
    white-space:nowrap;
  }
  .logo-mark{
    width:32px;height:32px;border-radius:9px;flex:none;
    display:grid;place-items:center;
    background:var(--brand-900);color:#fff;
  }
  .logo-text{font-weight:600;}
  .logo-text b{color:var(--brand-900);font-weight:800;}
  .nav-links{display:none;}
  @media (min-width:1024px){
    .nav-links{display:flex;align-items:center;gap:26px;margin-left:auto;}
  }
  .nav-links a{
    position:relative;font-size:15px;color:var(--ink-700);padding:6px 0;
    transition:color .2s ease-out;
  }
  .nav-links a:hover{color:var(--brand-900);}
  .nav-links a.active{color:var(--brand-900);font-weight:600;}
  .nav-links a.active::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
    background:var(--starlight-500);border-radius:2px;
  }
  .header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
  @media (min-width:1024px){.header-actions{margin-left:0;}}
  .nav-toggle{
    width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
    background:#fff;display:grid;place-items:center;color:var(--ink-900);
    transition:border-color .2s ease-out,background .2s ease-out;
  }
  .nav-toggle:hover{border-color:var(--brand-500);background:var(--brand-50);}
  @media (min-width:1024px){.nav-toggle{display:none;}}
  .mobile-drawer{display:none;border-top:1px solid var(--line);background:#fff;}
  .mobile-drawer.open{display:block;}
  .mobile-drawer a{
    display:block;padding:14px 0;border-bottom:1px solid var(--line);
    font-size:15px;color:var(--ink-700);transition:color .2s ease-out;
  }
  .mobile-drawer a:hover{color:var(--brand-900);}
  .mobile-drawer a.active{color:var(--brand-900);font-weight:600;}
  @media (min-width:1024px){.mobile-drawer{display:none !important;}}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 20px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;border:1px solid transparent;
    transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
  }
  .btn-primary{background:var(--brand-900);color:#fff;}
  .btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 12px 26px -14px rgba(30,42,90,.65);}
  .btn-primary:active{transform:translateY(0);box-shadow:none;}
  .btn-ghost{background:#fff;border-color:var(--line);color:var(--brand-900);}
  .btn-ghost:hover{border-color:var(--brand-500);background:var(--brand-50);}
  .btn-light{background:#fff;color:var(--brand-900);}
  .btn-light:hover{background:var(--brand-50);transform:translateY(-1px);}
  .btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;
    font-size:15px;font-weight:600;color:var(--brand-900);
    transition:color .2s ease-out;
  }
  .link-arrow span{transition:transform .2s ease-out;}
  .link-arrow:hover{color:var(--starlight-500);}
  .link-arrow:hover span{transform:translateX(2px);}

  /* ---------- 页首横幅 ---------- */
  .page-banner{
    position:relative;
    background-image:
      linear-gradient(100deg, rgba(247,249,252,.95) 0%, rgba(247,249,252,.80) 52%, rgba(247,249,252,.55) 100%),
      url('/assets/images/backpic/back-2.webp');
    background-size:cover;
    background-position:center;
    border-bottom:1px solid var(--line);
  }
  .banner-inner{
    padding-top:44px;padding-bottom:48px;
    min-height:240px;
    display:flex;flex-direction:column;justify-content:center;gap:14px;
  }
  @media (min-width:1024px){
    .banner-inner{min-height:272px;padding-top:56px;padding-bottom:58px;}
  }
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-500);}
  .breadcrumb a{transition:color .2s ease-out;}
  .breadcrumb a:hover{color:var(--starlight-500);}
  .breadcrumb .sep{color:var(--ink-400);}
  .page-banner h1{font-size:clamp(1.6rem,2.6vw,2.25rem);letter-spacing:-.01em;}
  .page-banner .banner-sub{max-width:660px;font-size:16px;color:var(--ink-700);}

  /* ---------- 板块 ---------- */
  .section{padding-top:56px;padding-bottom:56px;}
  @media (min-width:768px){.section{padding-top:80px;padding-bottom:80px;}}
  @media (min-width:1024px){.section{padding-top:104px;padding-bottom:104px;}}
  .section-alt{background:var(--alt);}
  .section-head{max-width:720px;margin-bottom:36px;}
  .eyebrow{
    display:inline-block;font-size:12px;font-weight:600;letter-spacing:.14em;
    color:var(--starlight-500);margin-bottom:10px;
  }
  .section-head h2{font-size:clamp(1.45rem,2.4vw,1.9rem);}
  .section-head p{margin-top:12px;font-size:16px;color:var(--ink-500);}

  /* ---------- 卡片 ---------- */
  .card{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:24px;
    box-shadow:var(--shadow-soft);
    transition:box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
  }
  @media (max-width:520px){.card{padding:18px;}}

  /* ---------- 时间线 ---------- */
  .timeline{position:relative;padding-left:0;}
  .tl-item{position:relative;padding-left:46px;margin-bottom:20px;}
  .tl-item:last-child{margin-bottom:0;}
  .timeline::before{
    content:"";position:absolute;left:9px;top:22px;bottom:22px;width:2px;
    background:var(--line);border-radius:2px;
  }
  .tl-node{
    position:absolute;left:0;top:26px;width:20px;height:20px;border-radius:50%;
    background:#fff;border:2px solid var(--starlight-500);
    box-shadow:0 0 0 4px rgba(43,179,163,.10);
  }
  .tl-card{display:flex;flex-direction:column;gap:10px;}
  .tl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:#CBD8EC;}
  .tl-head{display:flex;align-items:center;gap:12px;}
  .tl-index{
    font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--starlight-500);
    background:rgba(43,179,163,.12);border-radius:999px;padding:3px 10px;flex:none;
  }
  .tl-head h3{font-size:19px;}
  .tl-card p{font-size:15.5px;color:var(--ink-700);}
  .tl-list{display:grid;gap:8px;margin-top:4px;}
  .tl-list li{
    position:relative;padding-left:16px;font-size:14px;color:var(--ink-500);
  }
  .tl-list li::before{
    content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;
    background:var(--starlight-500);
  }

  /* ---------- 入口卡片网格 ---------- */
  .entry-grid{display:grid;gap:20px;grid-template-columns:1fr;}
  @media (min-width:640px){.entry-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.entry-grid{grid-template-columns:repeat(4,1fr);}}
  .entry-card{display:flex;flex-direction:column;gap:14px;}
  .entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:#CBD8EC;}
  .entry-icon{
    width:46px;height:46px;border-radius:12px;flex:none;
    display:grid;place-items:center;
    background:var(--brand-50);color:var(--brand-900);
    transition:background .2s ease-out,color .2s ease-out;
  }
  .entry-card:hover .entry-icon{background:rgba(43,179,163,.12);color:var(--starlight-500);}
  .entry-card h3{font-size:18px;}
  .entry-card p{font-size:14.5px;color:var(--ink-500);}
  .entry-foot{
    margin-top:auto;display:flex;align-items:center;gap:6px;
    font-size:13px;font-weight:600;color:var(--brand-700);
  }
  .entry-foot svg{transition:transform .2s ease-out;}
  .entry-card:hover .entry-foot svg{transform:translateX(3px);}

  /* ---------- 图文分屏 ---------- */
  .split{display:grid;gap:28px;align-items:center;}
  @media (min-width:1024px){.split{grid-template-columns:6fr 6fr;gap:48px;}}
  .split-media img{
    width:100%;aspect-ratio:16/11;object-fit:cover;
    border-radius:var(--radius-big);background:var(--alt);
    box-shadow:var(--shadow-soft);
  }
  .split-body h2{font-size:clamp(1.45rem,2.4vw,1.9rem);margin-bottom:12px;}
  .split-body > p{font-size:16px;color:var(--ink-500);margin-bottom:22px;}
  .device-list{display:grid;gap:14px;}
  .device-list li{
    display:flex;gap:14px;align-items:flex-start;
    background:#fff;border:1px solid var(--line);border-radius:14px;
    padding:16px 18px;box-shadow:var(--shadow-soft);
    transition:box-shadow .2s ease-out,transform .2s ease-out;
  }
  .device-list li:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);}
  .device-dot{
    width:10px;height:10px;border-radius:50%;flex:none;margin-top:9px;
    background:var(--starlight-500);
  }
  .device-list strong{display:block;font-size:15.5px;color:var(--ink-900);font-weight:600;}
  .device-list span{font-size:14px;color:var(--ink-500);}

  /* ---------- 错位版式 ---------- */
  .value-grid{display:grid;gap:28px;}
  @media (min-width:1024px){.value-grid{grid-template-columns:4fr 8fr;gap:56px;}}
  .value-lead h2{font-size:clamp(1.45rem,2.4vw,1.9rem);margin-bottom:12px;}
  .value-lead p{font-size:15.5px;color:var(--ink-500);}
  .value-items{display:grid;}
  .value-item{
    display:flex;gap:18px;align-items:flex-start;
    padding:22px 0;border-top:1px solid var(--line);
  }
  .value-item:last-child{border-bottom:1px solid var(--line);}
  .vi-num{
    flex:none;font-size:14px;font-weight:700;letter-spacing:.08em;
    color:var(--starlight-500);padding-top:4px;
  }
  .value-item h3{font-size:18px;margin-bottom:6px;}
  .value-item p{font-size:14.5px;color:var(--ink-500);}

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:860px;}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item:first-child{border-top:1px solid var(--line);}
  .faq-item summary{
    list-style:none;cursor:pointer;position:relative;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 4px 20px 16px;
    font-size:17px;font-weight:600;color:var(--ink-900);
    transition:color .2s ease-out;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::before{
    content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;
    background:transparent;transition:background .2s ease-out;
  }
  .faq-item[open] summary::before{background:var(--starlight-500);}
  .faq-item summary:hover{color:var(--brand-700);}
  .faq-item summary .chev{flex:none;color:var(--ink-400);transition:transform .25s ease-out;}
  .faq-item[open] summary .chev{transform:rotate(180deg);}
  .faq-body{padding:0 4px 22px 16px;font-size:15.5px;color:var(--ink-700);}

  /* ---------- 收尾 CTA ---------- */
  .cta-band{
    position:relative;overflow:hidden;
    background:var(--brand-900);
    border-radius:var(--radius-big);
    padding:44px 28px;
    display:grid;gap:24px;align-items:center;
  }
  .cta-band::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:radial-gradient(rgba(255,255,255,.32) 1.5px, transparent 1.6px);
    background-size:220px 160px;opacity:.5;
  }
  .cta-band::after{
    content:"";position:absolute;left:28px;right:28px;top:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(224,169,75,.55),transparent);
  }
  @media (min-width:1024px){
    .cta-band{grid-template-columns:1fr auto;padding:64px 56px;}
  }
  .cta-band h2{color:#fff;font-size:clamp(1.35rem,2.2vw,1.75rem);position:relative;}
  .cta-band p{color:rgba(255,255,255,.72);font-size:15.5px;margin-top:10px;max-width:600px;position:relative;}
  .cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#fff;border-top:1px solid var(--line);padding:56px 0 28px;}
  .footer-grid{display:grid;gap:32px;grid-template-columns:1fr;}
  @media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr;}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}}
  .footer-grid h3{font-size:15px;margin-bottom:14px;color:var(--ink-900);}
  .footer-grid ul{display:grid;gap:10px;}
  .footer-grid a{font-size:14px;color:var(--ink-500);transition:color .2s ease-out;}
  .footer-grid a:hover{color:var(--starlight-500);}
  .footer-grid p{font-size:14px;color:var(--ink-500);max-width:320px;}
  .footer-bottom{
    margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
    font-size:14px;color:var(--ink-400);
  }

/* roulang page: category3 */
:root{
  --brand-900:#1B2447;
  --brand-700:#2A3A78;
  --brand-500:#3E5AA8;
  --brand-100:#E3EBF8;
  --brand-50:#F2F6FD;
  --star-500:#2BB3A3;
  --star-400:#4ECBB9;
  --star-soft:rgba(43,179,163,.12);
  --sand-400:#E0A94B;
  --bg:#F7F9FC;
  --bg-alt:#EEF3FA;
  --card:#FFFFFF;
  --ink-900:#0F172A;
  --ink-700:#3F4A5C;
  --ink-500:#64748B;
  --ink-400:#94A3B8;
  --line:#DDE5F0;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:10px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.04), 0 8px 24px -12px rgba(30,42,90,.10);
  --shadow-hover:0 16px 40px -16px rgba(30,42,90,.20);
  --shadow-dark:0 20px 48px -20px rgba(0,0,0,.35);
  --ease:200ms ease-out;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
html body{
  margin:0;
  padding:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
p{margin:0;}
h1,h2,h3{margin:0;color:var(--ink-900);line-height:1.35;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:2px solid rgba(43,179,163,.55);
  outline-offset:2px;
  border-radius:8px;
}
::selection{background:rgba(43,179,163,.20);}

body .container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){ body .container{padding-left:32px;padding-right:32px;} }
@media (min-width:1024px){ body .container{padding-left:48px;padding-right:48px;} }

/* ---------- 按钮 / 徽章 ---------- */
.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:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand-900);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 14px 32px -14px rgba(30,42,90,.45);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm);}
.btn-outline{background:#fff;color:var(--brand-900);border-color:var(--line);}
.btn-outline:hover{border-color:var(--brand-500);background:var(--brand-50);}
.btn-light{background:#fff;color:var(--brand-900);}
.btn-light:hover{background:var(--brand-50);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--brand-900);padding:0 4px;height:auto;}
.btn-ghost i{transition:transform var(--ease);}
.btn-ghost:hover i{transform:translateX(4px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  color:var(--brand-700);
  background:var(--star-soft);
}

/* ---------- 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:blur(6px);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  height:64px;
}
@media (min-width:1024px){ .nav-wrap{height:68px;} }
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:30px;height:30px;border-radius:9px;
  background:var(--brand-900);
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px -8px rgba(27,36,71,.8);
}
.logo-text{font-size:17px;font-weight:600;color:var(--ink-700);letter-spacing:.01em;}
.logo-text b{font-weight:700;color:var(--brand-900);}
.nav-links{display:flex;align-items:center;gap:2px;}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:14.5px;
  color:var(--ink-700);
  border-radius:8px;
  transition:color var(--ease),background var(--ease);
}
.nav-links a:hover{color:var(--brand-900);background:var(--brand-50);}
.nav-links a.active{color:var(--brand-900);font-weight:600;}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-2px;
  width:22px;
  height:2px;
  border-radius:2px;
  background:var(--star-500);
  transform:translateX(-50%);
}
.nav-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-500);
  cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.icon-btn:hover{background:var(--brand-50);color:var(--brand-900);border-color:var(--brand-100);}
.drawer-toggle{display:none;}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:16px 20px 22px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer a{
  display:block;
  padding:12px 4px;
  font-size:15px;
  color:var(--ink-700);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a:last-of-type{border-bottom:0;}
.mobile-drawer a.active{color:var(--brand-900);font-weight:600;}
.mobile-drawer .btn{width:100%;margin-top:16px;}
@media (max-width:1023px){
  .nav-links{display:none;}
  .drawer-toggle{display:inline-flex;}
  .nav-actions .btn-login{display:none;}
}

/* ---------- 页面横幅 ---------- */
.page-banner{
  position:relative;
  min-height:268px;
  display:flex;
  align-items:center;
  padding:64px 0 56px;
  background-image:
    linear-gradient(100deg, rgba(247,249,252,.94) 0%, rgba(247,249,252,.78) 46%, rgba(247,249,252,.55) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--ink-500);
}
.breadcrumb span.sep{color:var(--ink-400);}
.breadcrumb a:hover{color:var(--star-500);}
.page-banner h1{
  margin-top:16px;
  font-size:clamp(1.6rem,2.6vw,2.25rem);
  font-weight:700;
  letter-spacing:-.01em;
}
.page-banner .lead{
  margin-top:14px;
  max-width:760px;
  font-size:16px;
  color:var(--ink-700);
}
.banner-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;}

/* ---------- 板块基础 ---------- */
.section{padding:56px 0;}
@media (min-width:768px){ .section{padding:80px 0;} }
@media (min-width:1024px){ .section{padding:96px 0;} }
.section-alt{background:var(--bg-alt);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--star-500);
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--star-500);}
.section-head{max-width:740px;margin-bottom:36px;}
.section-head h2{
  margin-top:12px;
  font-size:clamp(1.45rem,2.4vw,1.9rem);
  font-weight:700;
}
.section-head p{margin-top:12px;font-size:15px;color:var(--ink-500);}

/* ---------- 快捷入口 ---------- */
.quick-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
.quick-card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:22px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.quick-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-100);}
.quick-icon{
  width:42px;height:42px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--brand-50);
  color:var(--brand-500);
  font-size:17px;
  transition:background var(--ease),color var(--ease);
}
.quick-card:hover .quick-icon{background:var(--star-soft);color:var(--star-500);}
.quick-card h3{font-size:16px;font-weight:600;}
.quick-card p{font-size:14px;color:var(--ink-500);flex:1;}
.quick-card .go{font-size:13.5px;color:var(--brand-900);font-weight:600;}
.quick-card .go i{transition:transform var(--ease);}
.quick-card:hover .go i{transform:translateX(4px);}
@media (max-width:1023px){ .quick-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
@media (max-width:639px){ .quick-grid{grid-template-columns:1fr;} }

/* ---------- FAQ 手风琴 ---------- */
.faq-wrap{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:8px 28px;
  box-shadow:var(--shadow-sm);
}
.faq-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  column-gap:40px;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-grid .faq-item:last-child{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;
  position:relative;
  cursor:pointer;
  padding:20px 34px 20px 14px;
  font-size:16.5px;
  font-weight:600;
  color:var(--ink-900);
  transition:box-shadow var(--ease),color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-700);}
.faq-item summary::after{
  content:"";
  position:absolute;
  right:10px;
  top:50%;
  width:8px;height:8px;
  border-right:2px solid var(--ink-400);
  border-bottom:2px solid var(--ink-400);
  transform:translateY(-70%) rotate(45deg);
  transition:transform var(--ease),border-color var(--ease);
}
.faq-item[open] summary{
  box-shadow:inset 3px 0 0 var(--star-500);
  color:var(--brand-900);
}
.faq-item[open] summary::after{
  transform:translateY(-30%) rotate(-135deg);
  border-color:var(--star-500);
}
.faq-answer{
  padding:0 34px 22px 14px;
  font-size:14.8px;
  color:var(--ink-700);
  line-height:1.85;
}
.faq-answer ul{margin-top:10px;}
.faq-answer li{position:relative;padding-left:16px;margin-top:6px;}
.faq-answer li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--star-500);
}
@media (max-width:767px){
  .faq-grid{grid-template-columns:1fr;}
  .faq-wrap{padding:4px 18px;border-radius:var(--radius-card);}
}

/* ---------- 图文说明 ---------- */
.split{
  display:grid;
  grid-template-columns:5fr 4fr;
  gap:40px;
  align-items:center;
}
.split-media{
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-alt);
  box-shadow:var(--shadow-sm);
}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.split-body h2{margin-top:12px;font-size:clamp(1.4rem,2.2vw,1.75rem);font-weight:700;}
.split-body > p{margin-top:14px;font-size:15.5px;color:var(--ink-700);}
.step-list{margin-top:24px;display:flex;flex-direction:column;gap:16px;}
.step-list li{display:flex;gap:14px;align-items:flex-start;}
.step-num{
  flex-shrink:0;
  width:26px;height:26px;border-radius:50%;
  background:var(--brand-50);
  color:var(--brand-700);
  font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.step-list h3{font-size:15.5px;font-weight:600;}
.step-list p{font-size:14px;color:var(--ink-500);margin-top:2px;}
@media (max-width:1023px){
  .split{grid-template-columns:1fr;gap:28px;}
}

/* ---------- 对照表 ---------- */
.table-wrap{
  overflow-x:auto;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
}
table.compare{
  width:100%;
  min-width:660px;
  border-collapse:collapse;
}
table.compare caption{
  caption-side:top;
  text-align:left;
  padding:18px 22px 4px;
  font-size:14px;
  color:var(--ink-500);
}
table.compare th{
  background:var(--bg-alt);
  text-align:left;
  font-size:13.5px;
  font-weight:600;
  color:var(--ink-900);
  padding:14px 22px;
  white-space:nowrap;
}
table.compare td{
  padding:15px 22px;
  font-size:14.5px;
  color:var(--ink-700);
  border-top:1px solid var(--line);
  vertical-align:top;
}
table.compare tbody tr:nth-child(even){background:#FBFCFE;}
table.compare td:first-child{font-weight:600;color:var(--ink-900);}

/* ---------- 提示条 ---------- */
.tip-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
  margin-top:28px;
}
.tip-card{
  background:#fff;
  border:1px solid var(--line);
  border-left:4px solid var(--star-500);
  border-radius:14px;
  padding:22px 24px;
  box-shadow:var(--shadow-sm);
}
.tip-card.warn{border-left-color:var(--sand-400);}
.tip-card h3{font-size:16.5px;font-weight:600;display:flex;align-items:center;gap:8px;}
.tip-card h3 i{color:var(--star-500);font-size:15px;}
.tip-card.warn h3 i{color:var(--sand-400);}
.tip-card p{margin-top:10px;font-size:14.5px;color:var(--ink-500);}
@media (max-width:767px){ .tip-grid{grid-template-columns:1fr;} }

/* ---------- 窄条 CTA ---------- */
.assist-band{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:32px 36px;
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
}
.assist-band h2{font-size:clamp(1.2rem,1.9vw,1.5rem);font-weight:700;}
.assist-band p{margin-top:10px;font-size:14.8px;color:var(--ink-500);max-width:640px;}
@media (max-width:639px){ .assist-band{padding:26px 22px;} .assist-band .btn{width:100%;} }

/* ---------- 收尾 CTA ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-lg);
  background:var(--brand-900);
  color:#fff;
  padding:56px 48px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  box-shadow:var(--shadow-dark);
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    radial-gradient(1.6px 1.6px at 12% 26%, rgba(255,255,255,.35) 0, transparent 100%),
    radial-gradient(1.6px 1.6px at 68% 18%, rgba(78,203,185,.30) 0, transparent 100%),
    radial-gradient(1.6px 1.6px at 84% 72%, rgba(255,255,255,.26) 0, transparent 100%),
    radial-gradient(1.6px 1.6px at 34% 82%, rgba(224,169,75,.28) 0, transparent 100%);
  pointer-events:none;
}
.cta-band > *{position:relative;}
.cta-band h2{color:#fff;font-size:clamp(1.35rem,2.3vw,1.85rem);font-weight:700;}
.cta-band p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.78);max-width:620px;}
.cta-band .link-plain{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:16px;font-size:14px;color:var(--star-400);
}
.cta-band .link-plain:hover{color:#fff;}
@media (max-width:639px){ .cta-band{padding:36px 24px;} }

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:72px;
  background:#fff;
  border-top:1px solid var(--line);
  padding-top:56px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:32px;
}
.site-footer p{font-size:14px;color:var(--ink-500);max-width:320px;}
.site-footer h3{
  font-size:14px;
  font-weight:600;
  color:var(--ink-900);
  margin-bottom:14px;
  letter-spacing:.02em;
}
.site-footer li a{
  font-size:14px;
  color:var(--ink-500);
  line-height:2.1;
  transition:color var(--ease);
}
.site-footer li a:hover{color:var(--star-500);}
.footer-bottom{
  margin-top:44px;
  padding:18px 0 26px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:var(--ink-400);
}
@media (max-width:1023px){ .footer-grid{grid-template-columns:1fr 1fr;} }
@media (max-width:639px){ .footer-grid{grid-template-columns:1fr;gap:26px;} }