/* roulang page: index */
:root{
  --bg:#F5F7F6;
  --surface:#FFFFFF;
  --surface-2:#EDF2F0;
  --ink:#0F1A18;
  --ink-2:#4A5C59;
  --line:#DFE6E4;
  --primary:#00A88F;
  --primary-strong:#007E6B;
  --primary-soft:#E3F5F1;
  --accent:#FF6B3D;
  --accent-soft:#FFE7DE;
  --deep:#0B1413;
  --deep-2:#142321;
  --ring:rgba(0,168,143,.18);
  --radius-card:16px;
  --radius-btn:12px;
  --shadow-sm:0 1px 2px rgba(15,26,24,.06);
  --shadow-md:0 8px 24px -12px rgba(15,26,24,.18);
  --shadow-hover:0 18px 40px -18px rgba(15,26,24,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-0.01em;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.num,.tabular-nums{font-variant-numeric:tabular-nums;}

.wrap{width:100%;max-width:1200px;margin-inline:auto;padding-inline:20px;}
@media (min-width:1024px){.wrap{padding-inline:40px;}}
@media (min-width:1440px){.wrap{max-width:1280px;}}

/* 左侧竖向导航 */
.side-nav{
  position:fixed;left:0;top:0;height:100vh;width:232px;
  background:var(--deep);
  display:none;flex-direction:column;
  padding:22px 16px 18px;
  z-index:30;
}
@media (min-width:1024px){.side-nav{display:flex;}}
.side-nav-scroll{overflow-y:auto;overscroll-behavior:contain;}
.no-scrollbar{scrollbar-width:none;-ms-overflow-style:none;}
.no-scrollbar::-webkit-scrollbar{width:0;height:0;}
.nav-label{font-size:11px;letter-spacing:.14em;color:rgba(255,255,255,.34);padding:0 12px;margin:22px 0 8px;}
.nav-item{
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:10px;
  color:rgba(255,255,255,.72);font-size:14.5px;font-weight:500;
  position:relative;
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.nav-item svg{width:18px;height:18px;flex:none;stroke-width:1.6;}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
.nav-item.active{background:rgba(0,168,143,.10);color:var(--primary);}
.nav-item.active::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:20px;border-radius:0 3px 3px 0;background:var(--primary);}

/* 移动端顶栏与抽屉 */
.mobile-bar{
  position:fixed;top:0;left:0;right:0;height:64px;background:#fff;
  border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 20px;z-index:50;
}
@media (min-width:1024px){.mobile-bar{display:none;}}
.mask{
  position:fixed;inset:0;background:rgba(11,20,19,.55);z-index:55;
  opacity:0;pointer-events:none;transition:opacity 220ms var(--ease);
}
.mask.open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:78vw;max-width:320px;
  background:var(--deep);z-index:60;padding:20px;
  display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform 300ms var(--ease);
}
.drawer.open{transform:translateX(0);}
@media (min-width:1024px){.drawer,.mask{display:none;}}

.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--primary);
  display:grid;place-items:center;color:#fff;font-weight:700;font-size:14px;letter-spacing:.02em;flex:none;
}

/* 按钮 */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--primary);color:#fff;font-size:15px;font-weight:600;
  padding:12px 24px;border-radius:var(--radius-btn);border:none;cursor:pointer;
  transition:background 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.btn-primary:hover{background:var(--primary-strong);transform:translateY(-1px);box-shadow:var(--shadow-md);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--ink);font-size:15px;font-weight:600;
  padding:11px 24px;border-radius:var(--radius-btn);border:1.5px solid var(--line);cursor:pointer;
  transition:background 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease);
}
.btn-secondary:hover{background:var(--surface-2);border-color:#c9d5d2;transform:translateY(-1px);}
.btn-secondary:active{transform:translateY(0);}
.btn-dark{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;
  background:var(--primary);color:#fff;font-size:14px;font-weight:600;
  padding:11px 18px;border-radius:10px;border:none;cursor:pointer;
  transition:background 180ms var(--ease),transform 180ms var(--ease);
}
.btn-dark:hover{background:var(--primary-strong);transform:translateY(-1px);}

a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;
}

/* 通用板块 */
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--primary-strong);letter-spacing:.04em;}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--primary);}
.section-title{font-size:24px;margin-top:12px;}
@media (min-width:1024px){.section-title{font-size:32px;}}
.section-desc{margin-top:14px;color:var(--ink-2);font-size:15.5px;max-width:660px;line-height:1.75;}

.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  transition:border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.card:hover{border-color:rgba(0,168,143,.35);transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.card-flat:hover{transform:none;}

.badge-cat{
  display:inline-flex;align-items:center;font-size:12px;font-weight:600;
  padding:4px 10px;border-radius:999px;background:var(--primary-soft);color:var(--primary-strong);
  white-space:nowrap;
}
.badge-accent{
  display:inline-flex;align-items:center;font-size:12px;font-weight:600;
  padding:4px 10px;border-radius:999px;background:var(--accent-soft);color:var(--accent);
  white-space:nowrap;
}
.badge-line{
  display:inline-flex;align-items:center;font-size:13px;font-weight:500;
  padding:6px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--ink-2);
  transition:all 180ms var(--ease);
}
.badge-line:hover{border-color:rgba(0,168,143,.4);color:var(--primary-strong);}
.badge-line.is-on{background:var(--primary-soft);border-color:rgba(0,168,143,.35);color:var(--primary-strong);font-weight:600;}

.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary-strong);
  transition:gap 180ms var(--ease),color 180ms var(--ease);
}
.text-link:hover{gap:10px;color:var(--primary);}

.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}

.dot-grid{background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);background-size:8px 8px;}

.stat-card{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius-card);
  padding:24px;
  transition:border-color 180ms var(--ease),background 180ms var(--ease);
}
.stat-card:hover{border-color:rgba(0,168,143,.45);background:rgba(255,255,255,.06);}

/* FAQ */
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:16px 0;font-size:16px;font-weight:600;cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::marker{content:"";}
.faq-icon{flex:none;width:22px;height:22px;color:var(--primary);transition:transform 180ms var(--ease);}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-body{padding:0 0 20px;color:var(--ink-2);font-size:15px;line-height:1.8;max-width:72ch;animation:faqIn 220ms var(--ease);}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}

/* 表单 */
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:13px;font-weight:600;color:var(--ink);}
.field input,.field select,.field textarea{
  width:100%;height:48px;background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:0 14px;transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.field textarea{height:auto;min-height:104px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--ring);
}

/* 页脚 */
.footer{background:var(--deep);color:rgba(255,255,255,.72);}
.footer a{display:inline-flex;transition:color 180ms var(--ease),transform 180ms var(--ease);}
.footer a:hover{color:var(--primary);transform:translateX(-2px);}

/* 返回顶部 */
.totop{
  position:fixed;right:20px;bottom:24px;width:44px;height:44px;border-radius:999px;
  background:var(--primary);color:#fff;display:grid;place-items:center;border:none;cursor:pointer;
  box-shadow:var(--shadow-md);z-index:40;
  opacity:0;pointer-events:none;
  transition:opacity 180ms var(--ease),transform 180ms var(--ease),background 180ms var(--ease);
}
.totop.show{opacity:1;pointer-events:auto;}
.totop:hover{background:var(--primary-strong);transform:translateY(-2px);}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
    --bg:#F5F7F6; --surface:#FFFFFF; --surface-2:#EDF2F0;
    --ink:#0F1A18; --ink-2:#4A5C59; --line:#DFE6E4;
    --primary:#00A88F; --primary-strong:#007E6B; --primary-soft:#E3F5F1;
    --accent:#FF6B3D; --accent-soft:#FFE7DE;
    --deep:#0B1413; --deep-2:#142321; --ring:rgba(0,168,143,.18);
    --radius-card:16px; --radius-btn:12px;
    --shadow-sm:0 1px 2px rgba(15,26,24,.06);
    --shadow-md:0 8px 24px -12px rgba(15,26,24,.18);
    --shadow-hover:0 18px 40px -18px rgba(15,26,24,.26);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;background:var(--bg);color:var(--ink);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
    font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
    font-variant-numeric:tabular-nums;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none;transition:color 180ms var(--ease)}
  button{font-family:inherit;cursor:pointer;border:0;background:none}
  h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.01em;font-weight:700}
  p{margin:0}
  ul,ol{margin:0;padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
  ::selection{background:var(--primary-soft);color:var(--primary-strong)}

  .wrap{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
  @media(min-width:1024px){.wrap{padding-left:40px;padding-right:40px}}
  @media(min-width:1440px){.wrap{max-width:1280px}}

  /* ============ 左侧竖向导航 ============ */
  .sidebar{
    background:var(--deep);position:fixed;top:0;left:0;bottom:0;width:232px;z-index:60;
    display:none;flex-direction:column;padding:28px 18px 22px;
  }
  @media(min-width:1024px){.sidebar{display:flex}}
  .sidebar::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:radial-gradient(rgba(255,255,255,.08) 1px, transparent 1px);
    background-size:8px 8px;opacity:.5;
  }
  .brand-mark{
    display:inline-flex;align-items:center;justify-content:center;
    width:38px;height:38px;border-radius:11px;flex:none;
    background:linear-gradient(140deg,var(--primary),var(--primary-strong));
    color:#fff;font-weight:700;font-size:15px;letter-spacing:.02em;
  }
  .nav-item{
    position:relative;display:flex;align-items:center;gap:10px;height:44px;padding:0 12px;
    border-radius:10px;color:rgba(255,255,255,.72);font-size:14.5px;font-weight:500;
    transition:background 180ms var(--ease),color 180ms var(--ease);
  }
  .nav-item svg{width:18px;height:18px;stroke-width:1.6;flex:none}
  .nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
  .nav-item.active{background:rgba(0,168,143,.10);color:var(--primary);font-weight:600}
  .nav-item.active::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:3px;height:20px;border-radius:0 3px 3px 0;background:var(--primary);
  }
  .sidebar-scroll{overflow-y:auto;scrollbar-width:none;flex:1}
  .sidebar-scroll::-webkit-scrollbar{display:none}

  /* ============ 移动顶栏 / 抽屉 ============ */
  .topbar{
    position:sticky;top:0;z-index:50;height:64px;background:rgba(255,255,255,.94);
    backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid var(--line);
    display:flex;align-items:center;justify-content:space-between;padding:0 20px;
  }
  @media(min-width:1024px){.topbar{display:none}}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:78vw;max-width:320px;background:var(--deep);
    z-index:80;transform:translateX(102%);transition:transform 260ms var(--ease);
    padding:24px 20px;display:flex;flex-direction:column;
  }
  .drawer.open{transform:translateX(0)}
  .overlay{
    position:fixed;inset:0;background:rgba(11,20,19,.55);z-index:70;opacity:0;pointer-events:none;
    transition:opacity 220ms var(--ease);
  }
  .overlay.open{opacity:1;pointer-events:auto}
  body.locked{overflow:hidden}

  @media(min-width:1024px){
    .page-main{margin-left:232px}
  }

  /* ============ 组件 ============ */
  .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;
    transition:background 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
    white-space:nowrap;
  }
  .btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-sm)}
  .btn-primary:hover{background:var(--primary-strong);transform:translateY(-1px);box-shadow:var(--shadow-md)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{border:1.5px solid var(--line);color:var(--ink);background:var(--surface)}
  .btn-ghost:hover{background:var(--surface-2)}
  .link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary-strong);font-weight:600;font-size:14.5px}
  .link-arrow svg{width:16px;height:16px;transition:transform 180ms var(--ease)}
  .link-arrow:hover svg{transform:translateX(4px)}

  .badge{
    display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
    padding:6px 10px;border-radius:999px;line-height:1;
  }
  .badge-primary{background:var(--primary-soft);color:var(--primary-strong)}
  .badge-accent{background:var(--accent-soft);color:var(--accent)}
  .badge-line{border:1px solid var(--line);color:var(--ink-2);background:var(--surface)}

  .card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:24px;transition:border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
  }
  .card-hover:hover{border-color:rgba(0,168,143,.35);transform:translateY(-4px);box-shadow:var(--shadow-hover)}

  .crumbs{font-size:13px;color:var(--ink-2);display:flex;flex-wrap:wrap;align-items:center;gap:8px}
  .crumbs a:hover{color:var(--primary)}
  .crumbs .sep{color:#B9C6C3}
  .crumbs .now{color:var(--ink)}

  .dot-line{display:flex;gap:8px;align-items:flex-start;font-size:14.5px;color:var(--ink-2)}
  .dot-line::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--primary);margin-top:9px;flex:none}

  /* ============ 正文排版 ============ */
  .article-body{max-width:72ch;font-size:16px;line-height:1.95;color:#22302E}
  .article-body p{margin:0 0 1.4em}
  .article-body h2{font-size:24px;font-weight:700;margin:40px 0 16px;color:var(--ink)}
  .article-body h3{font-size:19px;font-weight:600;margin:32px 0 12px;color:var(--ink)}
  .article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.4em}
  .article-body ul{list-style:disc}
  .article-body ol{list-style:decimal}
  .article-body li{margin-bottom:8px}
  .article-body blockquote{
    margin:24px 0;padding:16px 20px;border-left:3px solid var(--primary);
    background:var(--primary-soft);border-radius:0 12px 12px 0;color:#20403A;
  }
  .article-body blockquote p:last-child{margin-bottom:0}
  .article-body img{border-radius:12px;margin:24px auto;border:1px solid var(--line)}
  .article-body figure{margin:24px 0}
  .article-body figcaption{font-size:13px;color:var(--ink-2);text-align:center;margin-top:8px}
  .article-body a{color:var(--primary-strong);border-bottom:1px solid rgba(0,168,143,.35)}
  .article-body a:hover{color:var(--primary)}
  .article-body table{width:100%;border-collapse:collapse;font-size:14.5px}
  .article-body .table-scroll{overflow-x:auto;margin:24px 0;border:1px solid var(--line);border-radius:12px}
  .article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
  .article-body th{background:var(--surface-2);font-weight:600}
  .article-body pre{
    background:var(--deep);color:#D7E4E1;padding:18px;border-radius:12px;overflow-x:auto;
    font-size:13.5px;line-height:1.7;margin:24px 0;
  }
  .article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.94em}
  .article-body :not(pre)>code{background:var(--surface-2);padding:2px 6px;border-radius:6px;color:#20403A}
  .article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}

  .toc-list a{display:block;padding:7px 0;font-size:13.5px;color:var(--ink-2);border-left:2px solid transparent;padding-left:12px}
  .toc-list a:hover{color:var(--primary-strong);border-left-color:var(--primary)}

  .sticky-side{position:sticky;top:24px}

  /* ============ 页脚 ============ */
  .footer{background:var(--deep);color:#fff;position:relative;overflow:hidden}
  .footer::before{
    content:"";position:absolute;top:-120px;left:20%;width:420px;height:420px;border-radius:50%;
    background:radial-gradient(circle,rgba(0,168,143,.18),transparent 70%);pointer-events:none;
  }
  .footer a{color:rgba(255,255,255,.68)}
  .footer a:hover{color:var(--primary);transform:translateX(2px);display:inline-block}
  .footer .wrap{position:relative;z-index:1}

  details.faq{border-bottom:1px solid var(--line)}
  details.faq summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:56px;font-size:16px;font-weight:600;color:var(--ink);padding:14px 0;
  }
  details.faq summary::-webkit-details-marker{display:none}
  details.faq .fx{
    width:24px;height:24px;flex:none;border-radius:50%;background:var(--primary-soft);color:var(--primary-strong);
    display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
    transition:transform 220ms var(--ease);
  }
  details.faq[open] .fx{transform:rotate(90deg)}
  details.faq .ans{font-size:14.5px;color:var(--ink-2);line-height:1.8;padding:0 40px 16px 0;max-width:70ch}

  @media (prefers-reduced-motion: reduce){
    *{animation:none!important;transition-duration:.01ms!important}
  }

/* roulang page: category1 */
:root{
  --bg:#F5F7F6;
  --surface:#FFFFFF;
  --surface-2:#EDF2F0;
  --ink:#0F1A18;
  --ink-2:#4A5C59;
  --line:#DFE6E4;
  --primary:#00A88F;
  --primary-strong:#007E6B;
  --primary-soft:#E3F5F1;
  --accent:#FF6B3D;
  --accent-soft:#FFE7DE;
  --deep:#0B1413;
  --deep-2:#142321;
  --ring:rgba(0,168,143,.18);
  --r-card:16px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(15,26,24,.06);
  --sh-md:0 8px 24px -12px rgba(15,26,24,.18);
  --sh-hover:0 18px 40px -18px rgba(15,26,24,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  padding-left:232px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;background:none;border:0;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:8px}

/* ===== 容器 ===== */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding-left:40px;padding-right:40px}
@media (min-width:1440px){.wrap{max-width:1280px}}

/* ===== 左侧竖向导航 ===== */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:232px;
  background:var(--deep);z-index:70;
}
.sidebar-inner{
  display:flex;flex-direction:column;height:100%;
  padding:24px 18px 22px;overflow-y:auto;
  scrollbar-width:none;-ms-overflow-style:none;
}
.sidebar-inner::-webkit-scrollbar{display:none}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--primary);color:#fff;
  display:grid;place-items:center;font-size:12.5px;font-weight:700;letter-spacing:.04em;flex:none;
}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:10px;
  color:rgba(255,255,255,.72);font-size:14.5px;font-weight:500;
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.nav-item svg{width:18px;height:18px;flex:none;stroke-width:1.7}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{background:rgba(0,168,143,.10);color:var(--primary)}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:0 3px 3px 0;background:var(--primary);
}
.side-cta{display:flex;align-items:center;justify-content:center;width:100%}

/* ===== 移动端顶部栏 ===== */
.topbar{
  position:fixed;top:0;left:0;right:0;height:64px;z-index:50;
  background:#fff;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 20px;
}
.menu-btn{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--ink);
  transition:background 180ms var(--ease),border-color 180ms var(--ease);
}
.menu-btn:hover{background:var(--surface-2)}
.menu-btn svg{width:20px;height:20px;stroke-width:1.8}
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,20,19,.55);z-index:65;
  opacity:0;visibility:hidden;transition:opacity 200ms var(--ease),visibility 200ms var(--ease);
}
.drawer-mask.show{opacity:1;visibility:visible}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background 180ms var(--ease),color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-sm)}
.btn-primary:hover{background:var(--primary-strong);transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-sm)}
.btn-ghost{background:#fff;border:1.5px solid var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--surface-2);border-color:#cfdad7}
.btn-ghost:active{transform:translateY(0)}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary-strong);
  transition:gap 180ms var(--ease),color 180ms var(--ease);
}
.link-arrow:hover{gap:10px;color:var(--primary)}

/* ===== 徽章 / 眉标 ===== */
.badge{
  display:inline-flex;align-items:center;
  padding:6px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-primary{background:var(--primary-soft);color:var(--primary-strong)}
.badge-accent{background:var(--accent-soft);color:var(--accent)}
.eyebrow{font-size:13px;font-weight:600;color:var(--primary-strong);letter-spacing:.06em}

/* ===== 标题排版 ===== */
.hero-title{font-size:44px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
.section-title{font-size:32px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
.card-title{font-size:20px;line-height:1.4;font-weight:600;letter-spacing:-.005em}
.card-text{font-size:15.5px;line-height:1.75;color:var(--ink-2)}

/* ===== 卡片 ===== */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;
  transition:border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.card:hover{border-color:rgba(0,168,143,.35);transform:translateY(-4px);box-shadow:var(--sh-hover)}
.feature-lead{background:linear-gradient(180deg,#fff 0%,#FBFDFC 100%)}
.icon-box{
  width:44px;height:44px;border-radius:12px;flex:none;
  background:var(--primary-soft);color:var(--primary-strong);
  display:grid;place-items:center;
}
.icon-box svg{width:22px;height:22px;stroke-width:1.7}
.dot-item{position:relative;padding-left:14px;font-size:14px;color:var(--ink-2)}
.dot-item::before{
  content:"";position:absolute;left:0;top:.62em;width:4px;height:4px;border-radius:50%;background:var(--primary);
}

/* ===== 图片容器 ===== */
.media-16-10{position:relative;aspect-ratio:16/10;border-radius:20px;overflow:hidden;border:1px solid var(--line);background:var(--surface-2)}
.media-4-3{position:relative;aspect-ratio:4/3;border-radius:16px;overflow:hidden;border:1px solid var(--line);background:var(--surface-2)}
.media-16-10 img,.media-4-3 img{width:100%;height:100%;object-fit:cover}
.stat-float{
  position:absolute;right:-14px;bottom:-14px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:14px 18px;box-shadow:var(--sh-md);text-align:center;
}
.stat-float .n{font-size:26px;font-weight:700;color:var(--primary-strong);line-height:1.2}
.stat-float .t{font-size:12.5px;color:var(--ink-2);margin-top:2px}

/* ===== 深色数据条 ===== */
.dark-band{position:relative;background:var(--deep);overflow:hidden}
.dark-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:8px 8px;opacity:.35;pointer-events:none;
}
.dark-band::after{
  content:"";position:absolute;width:520px;height:520px;right:-150px;top:-220px;
  background:radial-gradient(circle,rgba(0,168,143,.20),transparent 65%);pointer-events:none;
}
.dark-band > .wrap{position:relative;z-index:1}
.dark-card{
  background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-card);padding:24px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
  transition:border-color 180ms var(--ease),transform 180ms var(--ease);
}
.dark-card:hover{border-color:rgba(0,168,143,.45);transform:translateY(-3px)}
.dark-num{font-size:36px;line-height:1.1;font-weight:700;color:var(--primary)}

/* ===== 流程步骤 ===== */
.step{display:flex;gap:16px;align-items:flex-start}
.step-no{
  width:36px;height:36px;flex:none;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);color:var(--primary-strong);
  display:grid;place-items:center;font-size:14px;font-weight:700;
}
.step-line{width:1px;flex:1;background:var(--line);margin-left:17px}

/* ===== FAQ ===== */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 0;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  width:24px;height:24px;flex:none;border-radius:var(--r-pill);
  background:var(--primary-soft);color:var(--primary-strong);
  display:grid;place-items:center;transition:transform 200ms var(--ease);
}
.faq-icon svg{width:14px;height:14px;stroke-width:2}
.faq-item[open] .faq-icon{transform:rotate(90deg)}
.faq-answer{font-size:15px;line-height:1.8;color:var(--ink-2);padding:0 40px 20px 0}

/* ===== CTA 条 ===== */
.cta-band{
  background:var(--surface-2);border:1px solid var(--line);border-radius:20px;
  padding:40px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
}

/* ===== 页脚 ===== */
.footer{background:var(--deep);color:#fff}
.footer a{color:rgba(255,255,255,.6);display:inline-block;transition:color 180ms var(--ease),transform 180ms var(--ease)}
.footer a:hover{color:var(--primary);transform:translateX(2px)}
.footer h3{letter-spacing:.01em}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  body{padding-left:0}
  .page{padding-top:64px}
  .hero-title{font-size:34px}
  .section-title{font-size:24px}
  .sidebar{transform:translateX(-105%);transition:transform 220ms var(--ease);width:78vw;max-width:320px}
  .sidebar.open{transform:translateX(0)}
  .stat-float{right:12px;bottom:12px}
}
@media (max-width:767px){
  .wrap{padding-left:20px;padding-right:20px}
  .card{padding:20px}
  .dark-card{padding:20px}
  .cta-band{padding:26px 20px}
}
@media (max-width:520px){
  .hero-title{font-size:30px}
  .section-title{font-size:22px}
  .card-title{font-size:18px}
  .stat-float{padding:10px 14px}
  .stat-float .n{font-size:22px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root{
  --bg:#F5F7F6;
  --surface:#FFFFFF;
  --surface-2:#EDF2F0;
  --ink:#0F1A18;
  --ink-2:#4A5C59;
  --line:#DFE6E4;
  --primary:#00A88F;
  --primary-strong:#007E6B;
  --primary-soft:#E3F5F1;
  --accent:#FF6B3D;
  --accent-soft:#FFE7DE;
  --deep:#0B1413;
  --deep-2:#142321;
  --ring:rgba(0,168,143,.18);
  --r-card:16px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(15,26,24,.06);
  --sh-md:0 8px 24px -12px rgba(15,26,24,.18);
  --sh-hover:0 18px 40px -18px rgba(15,26,24,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,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}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
@media (min-width:1440px){.wrap{max-width:1280px}}
@media (max-width:1023px){.wrap{padding:0 28px}}
@media (max-width:767px){.wrap{padding:0 20px}}
.dot-texture{background-image:radial-gradient(rgba(15,26,24,.04) 1px,transparent 1px);background-size:8px 8px}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;inset:0 auto 0 0;width:232px;height:100vh;z-index:40;
  background:var(--deep);color:#fff;
}
.sidebar-inner{
  display:flex;flex-direction:column;height:100%;padding:24px 18px;
  overflow-y:auto;scrollbar-width:none;
}
.sidebar-inner::-webkit-scrollbar{display:none}
.brand{display:flex;align-items:center;gap:12px;padding:2px 4px}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  background:linear-gradient(150deg,var(--primary),var(--primary-strong));
  color:#fff;font-size:14px;font-weight:700;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.35}
.brand-text strong{font-size:15px;font-weight:700;color:#fff}
.brand-text span{font-size:12px;color:rgba(255,255,255,.5)}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:10px;
  font-size:14px;color:rgba(255,255,255,.72);
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.nav-item svg{width:18px;height:18px;flex:0 0 18px;stroke-width:1.6}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{background:rgba(0,168,143,.10);color:var(--primary);font-weight:600}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:2px;background:var(--primary);
}
.sidebar-foot{margin-top:auto;padding-top:20px;border-top:1px solid rgba(255,255,255,.08)}
.sidebar-copy{margin-top:12px;font-size:12px;color:rgba(255,255,255,.4);text-align:center}

/* ============ 移动端顶栏与抽屉 ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;z-index:50;
  align-items:center;justify-content:space-between;
  padding:0 20px;background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);backdrop-filter:blur(6px);
}
.topbar .brand-text strong{color:var(--ink)}
.topbar .brand-text span{display:none}
.hamburger{width:42px;height:42px;border-radius:12px;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;transition:background 180ms var(--ease)}
.hamburger:hover{background:var(--surface-2)}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
.overlay{position:fixed;inset:0;background:rgba(11,20,19,.55);opacity:0;visibility:hidden;transition:opacity 180ms var(--ease);z-index:55}
.overlay.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100vh;width:78vw;max-width:320px;z-index:60;
  background:var(--deep);padding:24px 20px;display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform 220ms var(--ease);
  overflow-y:auto;scrollbar-width:none;
}
.drawer::-webkit-scrollbar{display:none}
.drawer.open{transform:translateX(0)}
body.lock{overflow:hidden}
@media (min-width:1024px){.drawer,.overlay,.topbar{display:none}}
@media (max-width:1023px){.topbar{display:flex}}

/* ============ 主内容区 ============ */
.site-main{min-height:100vh;padding-left:232px}
@media (max-width:1023px){.site-main{padding-left:0;padding-top:64px}}

.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  background:var(--primary);color:#fff;font-size:14px;font-weight:600;
  box-shadow:var(--sh-sm);
  transition:background 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.btn-primary:hover{background:var(--primary-strong);transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-sm)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-btn);
  border:1.5px solid var(--line);background:var(--surface);
  font-size:14px;font-weight:600;color:var(--ink);
  transition:background 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease);
}
.btn-ghost:hover{background:var(--surface-2);border-color:rgba(0,168,143,.35);transform:translateY(-1px)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary-strong)}
.link-arrow span{transition:transform 180ms var(--ease)}
.link-arrow:hover span{transform:translateX(4px)}
.badge{
  display:inline-flex;align-items:center;padding:6px 10px;border-radius:var(--r-pill);
  background:var(--primary-soft);color:var(--primary-strong);
  font-size:12px;font-weight:600;line-height:1;
}
.badge-accent{background:var(--accent-soft);color:var(--accent)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 12px;border-radius:var(--r-pill);
  background:var(--primary-soft);color:var(--primary-strong);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-2)}
.crumb a{transition:color 180ms var(--ease)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:rgba(74,92,89,.5)}
.crumb .current{color:var(--ink);font-weight:600}

/* ============ 分类头 ============ */
.cat-hero{background:var(--surface);border-bottom:1px solid var(--line);padding:56px 0 64px}
.cat-hero .crumb{margin-bottom:28px}
.cat-hero-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:40px;align-items:start}
.cat-hero h1{
  margin-top:18px;font-size:44px;line-height:1.3;font-weight:700;letter-spacing:-.01em;
}
.cat-hero h1 .h1-brand{font-size:18px;font-weight:500;color:var(--ink-2);letter-spacing:0}
.cat-hero .lead{margin-top:16px;max-width:560px;font-size:16px;color:var(--ink-2)}
.anchor-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.anchor-nav a{
  display:inline-flex;align-items:center;padding:9px 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);font-size:13px;font-weight:600;color:var(--ink-2);
  transition:all 180ms var(--ease);
}
.anchor-nav a:hover{border-color:rgba(0,168,143,.4);color:var(--primary-strong);background:var(--primary-soft)}
.cat-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-md);
}
.cat-panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.panel-date{font-size:12px;color:var(--ink-2)}
.cat-panel ul{margin-top:4px}
.cat-panel li{display:flex;gap:14px;align-items:baseline;padding:14px 0;border-bottom:1px dashed var(--line);font-size:14px}
.cat-panel li:last-of-type{border-bottom:0}
.cat-panel time{font-size:12px;color:var(--ink-2);flex:0 0 54px}
.cat-panel .link-arrow{margin-top:14px}
@media (max-width:900px){.cat-hero-grid{grid-template-columns:1fr;gap:32px}}
@media (max-width:767px){
  .cat-hero{padding:36px 0 44px}
  .cat-hero h1{font-size:30px}
  .cat-hero h1 .h1-brand{display:block;margin-top:8px;font-size:15px}
}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-tight{padding:72px 0}
@media (max-width:1023px){.section{padding:72px 0}.section-tight{padding:56px 0}}
@media (max-width:767px){.section{padding:56px 0}.section-tight{padding:44px 0}}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{margin-top:14px;font-size:32px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:12px;font-size:16px;color:var(--ink-2)}
.section-head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
@media (max-width:767px){.section-head h2{font-size:24px}}

/* ============ 精选看点 ============ */
.spot-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:40px;align-items:center}
.spot-media{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-md)}
.spot-media img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--surface-2)}
.spot-float{
  position:absolute;right:18px;bottom:18px;background:#fff;border-radius:14px;
  padding:14px 18px;box-shadow:var(--sh-md);border:1px solid var(--line);
}
.spot-float strong{display:block;font-size:24px;font-weight:700;color:var(--primary-strong);line-height:1.2}
.spot-float span{font-size:12px;color:var(--ink-2)}
.spot-list{display:flex;flex-direction:column;gap:18px}
.spot-item{
  display:flex;gap:16px;padding:20px;border-radius:var(--r-card);
  background:var(--surface);border:1px solid var(--line);
  transition:border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.spot-item:hover{border-color:rgba(0,168,143,.35);transform:translateY(-4px);box-shadow:var(--sh-hover)}
.spot-num{
  flex:0 0 34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary-strong);font-size:13px;font-weight:700;
}
.spot-item h3{font-size:17px;font-weight:600;line-height:1.4}
.spot-item p{margin-top:6px;font-size:14px;color:var(--ink-2)}
@media (max-width:900px){.spot-grid{grid-template-columns:1fr;gap:28px}}

/* ============ 筛选行 ============ */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.chip{
  padding:9px 16px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:var(--surface);font-size:13px;font-weight:600;color:var(--ink-2);
  transition:all 180ms var(--ease);
}
.chip:hover{border-color:rgba(0,168,143,.4);color:var(--primary-strong)}
.chip.is-active{background:var(--primary);border-color:var(--primary);color:#fff}
.chip.is-active:hover{color:#fff}

/* ============ 卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:1023px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.card-grid{grid-template-columns:1fr}}
.card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-sm);
  transition:border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.card:hover{border-color:rgba(0,168,143,.35);transform:translateY(-4px);box-shadow:var(--sh-hover)}
.card-thumb{border-radius:12px;overflow:hidden;border:1px solid var(--line);margin-bottom:18px}
.card-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--surface-2);transition:transform 220ms var(--ease)}
.card:hover .card-thumb img{transform:scale(1.03)}
.card-meta{display:flex;align-items:center;justify-content:space-between;gap:12px}
.card-meta time{font-size:12px;color:var(--ink-2)}
.card h3{margin-top:14px;font-size:18px;font-weight:600;line-height:1.45}
.card .excerpt{margin-top:10px;font-size:14px;color:var(--ink-2);flex:1}
.card .card-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.empty-card{
  display:none;grid-column:1 / -1;border:1px dashed var(--line);border-radius:var(--r-card);
  padding:48px 24px;text-align:center;background:var(--surface);
}
.empty-card p{margin-top:12px;font-size:14px;color:var(--ink-2)}
.empty-card .btn-ghost{margin-top:18px}

/* ============ 更新节奏流程 ============ */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.flow-item{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-sm);
  transition:border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.flow-item:hover{border-color:rgba(0,168,143,.35);transform:translateY(-4px);box-shadow:var(--sh-hover)}
.flow-item::after{
  content:"";position:absolute;top:46px;right:-14px;width:12px;height:2px;background:var(--line);
}
.flow-item:last-child::after{display:none}
.flow-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;background:var(--deep);color:var(--primary);
  font-size:13px;font-weight:700;letter-spacing:.04em;
}
.flow-item h3{margin-top:16px;font-size:17px;font-weight:600}
.flow-item p{margin-top:8px;font-size:14px;color:var(--ink-2)}
@media (max-width:1023px){
  .flow{grid-template-columns:repeat(2,1fr);gap:20px}
  .flow-item::after{display:none}
}
@media (max-width:560px){.flow{grid-template-columns:1fr}}

/* ============ 深色数据条 ============ */
.dark-band{
  position:relative;background:var(--deep);color:#fff;padding:80px 0;overflow:hidden;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:8px 8px;
}
.dark-band::before{
  content:"";position:absolute;left:0;top:-40%;width:520px;height:520px;
  background:radial-gradient(circle,rgba(0,168,143,.08),transparent 65%);
  pointer-events:none;
}
.dark-band .section-head h2{color:#fff}
.dark-band .section-head p{color:rgba(255,255,255,.6)}
.dark-band .eyebrow{background:rgba(0,168,143,.16);color:var(--primary)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.stat-card{
  border:1px solid rgba(255,255,255,.08);border-radius:var(--r-card);padding:24px;
  background:rgba(255,255,255,.02);box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
  transition:border-color 180ms var(--ease),transform 180ms var(--ease);
}
.stat-card:hover{border-color:rgba(0,168,143,.4);transform:translateY(-4px)}
.stat-num{font-size:36px;font-weight:700;color:var(--primary);line-height:1.15;letter-spacing:-.01em}
.stat-unit{font-size:18px;margin-left:2px}
.stat-label{margin-top:10px;font-size:15px;font-weight:600;color:#fff}
.stat-desc{margin-top:6px;font-size:13px;color:rgba(255,255,255,.55)}
.dark-band .band-note{margin-top:28px;font-size:14px;color:rgba(255,255,255,.55)}
@media (max-width:1023px){.stat-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){
  .stat-grid{grid-template-columns:1fr;gap:16px}
  .dark-band{padding:56px 0}
}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px}
.faq-item{border-bottom:1px solid var(--line);background:transparent}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:56px;padding:20px 4px;font-size:16px;font-weight:600;color:var(--ink);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary-strong)}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px;transition:transform 180ms var(--ease)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary-strong);border-radius:2px;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;transition:opacity 180ms var(--ease)}
.faq-item[open] .faq-icon{transform:rotate(90deg)}
.faq-item[open] .faq-icon::after{opacity:0}
.faq-a{padding:0 4px 22px;max-width:72ch}
.faq-a p{font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ============ CTA 与表单 ============ */
.cta-band{background:var(--surface-2);padding:96px 0}
@media (max-width:1023px){.cta-band{padding:72px 0}}
.cta-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:start}
.cta-grid h2{margin-top:14px;font-size:32px;font-weight:700;line-height:1.3;letter-spacing:-.01em}
.cta-grid .cta-lead{margin-top:14px;font-size:16px;color:var(--ink-2);max-width:460px}
.cta-points{margin-top:28px;display:flex;flex-direction:column;gap:14px}
.cta-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink-2)}
.cta-points .dot{flex:0 0 6px;width:6px;height:6px;border-radius:50%;background:var(--primary);margin-top:10px}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-md);
}
.form-note{
  display:flex;align-items:center;gap:10px;margin-bottom:20px;padding:12px 16px;
  border-radius:var(--r-btn);background:var(--primary-soft);color:var(--primary-strong);
  font-size:13px;font-weight:600;
}
.form-note.is-hidden{display:none}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field-full{grid-column:1 / -1}
.field span{font-size:13px;font-weight:600;color:var(--ink)}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--surface);font-size:14px;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.field textarea{height:auto;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:rgba(74,92,89,.5)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--ring);
}
@media (max-width:900px){.cta-grid{grid-template-columns:1fr;gap:32px}}
@media (max-width:560px){
  .form-grid{grid-template-columns:1fr}
  .cta-grid h2{font-size:24px}
}

/* ============ 页脚 ============ */
.footer{background:var(--deep);color:rgba(255,255,255,.7)}
.footer h3{color:#fff}
.footer a{color:rgba(255,255,255,.6);transition:color 180ms var(--ease),transform 180ms var(--ease)}
.footer a:hover{color:var(--primary)}
.footer li a:hover{display:inline-block;transform:translateX(2px)}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
  .card:hover,.spot-item:hover,.flow-item:hover,.stat-card:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --bg:#F5F7F6;--surface:#FFFFFF;--surface-2:#EDF2F0;
  --ink:#0F1A18;--ink-2:#4A5C59;--line:#DFE6E4;
  --primary:#00A88F;--primary-strong:#007E6B;--primary-soft:#E3F5F1;
  --accent:#FF6B3D;--accent-soft:#FFE7DE;
  --deep:#0B1413;--deep-2:#142321;--ring:rgba(0,168,143,.18);
  --sh-sm:0 1px 2px rgba(15,26,24,.06);
  --sh-md:0 8px 24px -12px rgba(15,26,24,.18);
  --sh-hover:0 18px 40px -18px rgba(15,26,24,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.75;font-variant-numeric:tabular-nums;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:12px}
::selection{background:var(--primary-soft);color:var(--primary-strong)}

/* 布局骨架 */
.shell{padding-left:232px;min-height:100vh;display:flex;flex-direction:column}
.shell main{flex:1}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
@media(min-width:1440px){.wrap{max-width:1280px}}

/* 左侧竖向导航 */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:232px;background:var(--deep);
  display:flex;flex-direction:column;padding:26px 18px 20px;z-index:70;overflow-y:auto;
  scrollbar-width:none;
}
.sidebar::-webkit-scrollbar{display:none}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:var(--primary);color:#fff;font-size:13px;font-weight:700;letter-spacing:.5px;flex:0 0 auto;
}
.sidebar-sub{margin-top:10px;font-size:12px;color:rgba(255,255,255,.45);letter-spacing:.02em}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 14px;
  border-radius:10px;color:rgba(255,255,255,.72);font-size:14px;font-weight:500;
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.nav-item svg{
  width:18px;height:18px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:1.6;
  stroke-linecap:round;stroke-linejoin:round;
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{background:rgba(0,168,143,.10);color:var(--primary)}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:999px;background:var(--primary);
}
.sidebar-foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px}
.sidebar-copy{font-size:12px;line-height:1.7;color:rgba(255,255,255,.4)}

/* 移动端顶栏与抽屉 */
.mobile-bar{display:none}
.mask{
  position:fixed;inset:0;background:rgba(11,20,19,.55);opacity:0;pointer-events:none;
  transition:opacity 220ms var(--ease);z-index:79;
}
.mask.show{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;height:100vh;width:78vw;max-width:320px;background:var(--deep);
  padding:22px 20px;z-index:80;display:none;flex-direction:column;overflow-y:auto;
  transform:translateX(102%);transition:transform 240ms var(--ease);
}
.drawer.open{transform:translateX(0)}
.icon-btn{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--surface);
  display:grid;place-items:center;cursor:pointer;transition:background 180ms var(--ease),border-color 180ms var(--ease);
}
.icon-btn:hover{background:var(--surface-2);border-color:rgba(0,168,143,.35)}
.icon-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.icon-btn.on-dark{border-color:rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff}
@media(min-width:1024px){.drawer,.mask,.mobile-bar{display:none!important}}

/* 通用排版 */
.h1{font-size:44px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
.h2{font-size:32px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
.h3{font-size:20px;line-height:1.4;font-weight:600}
.lead{font-size:16px;line-height:1.75;color:var(--ink-2)}
.muted{color:var(--ink-2)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--primary-strong);letter-spacing:.02em;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--primary)}
.badge{
  display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary-strong);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-accent{background:var(--accent-soft);color:#C2410C}

/* 面包屑 */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-2)}
.crumb a{transition:color 180ms var(--ease)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:#B9C6C3}
.crumb .now{color:var(--ink)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;
  border-radius:12px;font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;
  transition:background 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-sm)}
.btn-primary:hover{background:var(--primary-strong);transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-sm)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--surface-2);border-color:rgba(0,168,143,.35)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--sh-sm)}
.btn-accent:hover{background:#E4562B;transform:translateY(-1px);box-shadow:var(--sh-md)}

/* 卡片与媒体 */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:24px;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),transform 180ms var(--ease);
}
.card:hover{border-color:rgba(0,168,143,.35);transform:translateY(-4px);box-shadow:var(--sh-hover)}
.media{
  border-radius:20px;overflow:hidden;border:1px solid var(--line);background:var(--surface-2);aspect-ratio:16/10;
}
.media img{width:100%;height:100%;object-fit:cover}
.media-sm{border-radius:16px;aspect-ratio:16/9}

/* 信任短词 */
.trust{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--ink-2);margin-top:28px}
.trust li{display:flex;align-items:center;gap:14px}
.trust li:not(:first-child)::before{content:"·";color:#B9C6C3}

/* 锚点导航 */
.anchor-nav{display:flex;flex-wrap:wrap;gap:10px}
.anchor-nav a{
  padding:8px 14px;border:1px solid var(--line);border-radius:999px;background:var(--surface);
  font-size:13px;font-weight:500;color:var(--ink-2);
  transition:color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.anchor-nav a:hover{color:var(--primary-strong);border-color:rgba(0,168,143,.35);transform:translateY(-2px);box-shadow:var(--sh-sm)}

/* 服务条目行 */
.svc-row{
  display:flex;align-items:center;gap:20px;background:var(--surface);border:1px solid var(--line);
  border-radius:16px;padding:20px 24px;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),transform 180ms var(--ease);
}
.svc-row:hover{border-color:rgba(0,168,143,.35);transform:translateX(4px);box-shadow:var(--sh-md)}
.svc-icon{
  width:48px;height:48px;border-radius:14px;background:var(--primary-soft);color:var(--primary-strong);
  display:grid;place-items:center;flex:0 0 auto;
}
.svc-icon svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.svc-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:4px}
.svc-title{font-size:17px;font-weight:600;line-height:1.5}
.svc-desc{font-size:14px;line-height:1.7;color:var(--ink-2)}
.svc-arrow{color:#B9C6C3;flex:0 0 auto;transition:color 180ms var(--ease),transform 180ms var(--ease)}
.svc-arrow svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.svc-row:hover .svc-arrow{color:var(--primary-strong);transform:translateX(4px)}

/* 流程 */
.section-soft{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;margin-top:44px}
.steps::before{content:"";position:absolute;top:26px;left:4%;right:4%;height:1px;background:var(--line)}
.step{position:relative}
.step-num{
  width:52px;height:52px;border-radius:999px;background:var(--surface);border:1px solid var(--line);
  display:grid;place-items:center;font-size:15px;font-weight:700;color:var(--primary-strong);
  position:relative;z-index:1;box-shadow:var(--sh-sm);
}
.step-title{margin-top:18px;font-size:16px;font-weight:600}
.step-desc{margin-top:8px;font-size:14px;line-height:1.75;color:var(--ink-2)}

/* FAQ */
.faq-list{margin-top:32px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:18px 0;font-size:16px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  width:22px;height:22px;flex:0 0 auto;color:var(--primary-strong);
  transition:transform 180ms var(--ease),color 180ms var(--ease);
}
.faq-icon svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}
.faq-item[open] .faq-icon{transform:rotate(45deg);color:var(--accent)}
.faq-answer{padding:0 0 20px;font-size:15px;line-height:1.8;color:var(--ink-2);max-width:72ch}

/* 表单 */
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:8px}
.field input,.field textarea{
  width:100%;height:48px;border:1px solid var(--line);border-radius:12px;background:var(--surface);
  padding:0 14px;font-size:15px;transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:#9AA8A5}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--ring)}
.form-tip{margin-top:14px;font-size:13px;color:var(--ink-2)}
.alert{display:none;border-radius:12px;padding:12px 14px;font-size:14px;margin-bottom:20px}
.alert.ok{display:block;background:var(--primary-soft);color:var(--primary-strong);border:1px solid rgba(0,168,143,.28)}
.alert.err{display:block;background:var(--accent-soft);color:#B23A16;border:1px solid rgba(255,107,61,.28)}
.info-list{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.info-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.7}
.info-list li span{
  flex:0 0 76px;color:var(--ink);font-weight:600;
}

/* CTA 条 */
.cta-band{
  position:relative;overflow:hidden;background:var(--deep);border-radius:20px;padding:40px;
  display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
  background-image:radial-gradient(circle at 86% 12%,rgba(0,168,143,.16),transparent 58%);
}

/* 深色区块纹理 */
.deep-block{position:relative;background:var(--deep);color:#fff;overflow:hidden}
.deep-block::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:8px 8px;
}

/* 页脚 */
.footer{background:var(--deep);color:rgba(255,255,255,.72);position:relative}
.footer h3{color:#fff}
.footer a{display:inline-block;color:rgba(255,255,255,.68);transition:color 180ms var(--ease),transform 180ms var(--ease)}
.footer a:hover{color:var(--primary);transform:translateX(2px)}

.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--primary);color:#fff;padding:10px 16px;
  border-radius:0 0 12px 0;z-index:200;font-size:14px;
}
.skip-link:focus{left:0}

@media(max-width:1023px){
  .shell{padding-left:0;padding-top:64px}
  .mobile-bar{
    display:flex;position:fixed;top:0;left:0;right:0;height:64px;z-index:60;
    background:var(--surface);border-bottom:1px solid var(--line);align-items:center;
    justify-content:space-between;padding:0 20px;
  }
  .drawer{display:flex}
}
@media(max-width:767px){
  .wrap{padding-left:20px;padding-right:20px}
  .h1{font-size:30px}
  .h2{font-size:24px}
  .h3{font-size:18px}
  body{font-size:15.5px}
  .steps{grid-template-columns:1fr;gap:28px}
  .steps::before{display:none}
  .cta-band{padding:28px 24px}
}
@media(max-width:600px){
  .svc-row{align-items:flex-start;padding:18px;gap:14px}
  .svc-arrow{display:none}
  .svc-icon{width:42px;height:42px;border-radius:12px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .card:hover,.svc-row:hover,.btn:hover{transform:none!important}
}