/* roulang page: index */
:root{
  --brand-900:#0F3A34;
  --brand-700:#17695C;
  --brand-300:#8FC7BC;
  --brand-050:#EDF4F1;
  --accent:#D2603A;
  --accent-dark:#B84E2C;
  --bg:#FAF8F4;
  --surface:#FFFFFF;
  --surface-2:#F1EDE6;
  --text:#16211F;
  --text-2:#4A5854;
  --text-3:#7C8A85;
  --line:#E5E0D7;
  --success:#2E7D5B;
  --warn:#C9862B;
  --danger:#B4432F;
  --r-btn:10px;
  --r-card:16px;
  --r-lg:24px;
  --shadow-1:0 1px 2px rgba(15,58,52,.06);
  --shadow-2:0 10px 28px -14px rgba(15,58,52,.22);
  --container:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter","SF Pro Text",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-700);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-900);text-decoration:underline;text-underline-offset:3px;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

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

/* ---------- 顶部信息条 ---------- */
.topbar{height:36px;background:var(--brand-900);color:var(--brand-050);font-size:13px;}
.topbar-inner{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar-domain{color:#9FBCB4;letter-spacing:.02em;}
.topbar-tip{color:var(--brand-050);opacity:.92;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-actions{display:flex;align-items:center;gap:18px;flex-shrink:0;}
.topbar-actions a{color:#D8E8E3;font-size:13px;}
.topbar-actions a:hover{color:#fff;text-decoration:none;}
.topbar-phone{color:#9FBCB4;}
@media (max-width:767px){
  .topbar-domain,.topbar-phone{display:none;}
  .topbar-tip{font-size:12px;}
}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;}
.mainnav{background:rgba(250,248,244,.96);border-bottom:1px solid var(--line);transition:box-shadow .2s ease,background .2s ease;}
.mainnav.is-scrolled{box-shadow:var(--shadow-2);background:#fff;}
.mainnav-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.logo{display:flex;align-items:center;gap:10px;color:var(--brand-900);text-decoration:none;}
.logo:hover{text-decoration:none;color:var(--brand-900);}
.logo-mark{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;background:var(--brand-050);}
.logo-text{font-size:18px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{
  position:relative;
  color:var(--text-2);
  font-size:15px;
  padding:6px 0;
  text-decoration:none;
  transition:color .18s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-links a:hover{color:var(--brand-900);text-decoration:none;}
.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-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;
  align-items:center;justify-content:center;color:var(--brand-900);
}
@media (max-width:1023px){
  .nav-links,.nav-cta .btn{display:none;}
  .nav-toggle{display:flex;}
}
/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;background:#fff;z-index:80;display:none;flex-direction:column;padding:20px;
}
.drawer.open{display:flex;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--brand-900);}
.drawer-links{flex:1;padding-top:8px;}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;height:52px;
  border-bottom:1px solid var(--line);color:var(--text);font-size:16px;text-decoration:none;
}
.drawer-links a::after{content:"›";color:var(--text-3);font-size:20px;line-height:1;}
.drawer-links a.active{color:var(--brand-700);font-weight:600;}
.drawer-foot{padding-top:16px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;text-decoration:none;cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--brand-700);color:#fff;}
.btn-primary:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:#fff;border-color:var(--brand-900);color:var(--brand-900);}
.btn-secondary:hover{background:var(--surface-2);color:var(--brand-900);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-ghost{background:var(--brand-050);color:var(--brand-700);}
.btn-ghost:hover{background:var(--brand-300);color:var(--brand-900);}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}
.btn-sm{padding:9px 16px;font-size:14px;}

/* ---------- 通用区块 ---------- */
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-alt{background:var(--brand-050);}
.section-head{max-width:760px;margin-bottom:32px;}
@media (min-width:1024px){.section-head{margin-bottom:48px;}}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--brand-700);
  background:var(--brand-050);border:1px solid var(--brand-300);border-radius:999px;padding:4px 12px;margin-bottom:14px;
}
.section-alt .eyebrow{background:#fff;}
h2.section-title{font-size:26px;font-weight:600;line-height:1.35;color:var(--text);}
@media (min-width:1024px){h2.section-title{font-size:30px;}}
.section-title .underline-accent{position:relative;}
.section-title .underline-accent::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:4px;border-radius:2px;
  background:var(--accent);opacity:.28;
}
.section-desc{margin-top:14px;color:var(--text-2);font-size:16px;line-height:1.85;max-width:700px;}

/* ---------- Hero ---------- */
.hero{padding:48px 0 56px;position:relative;overflow:hidden;}
@media (min-width:1024px){.hero{padding:76px 0 88px;}}
.hero-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center;}
@media (min-width:1024px){.hero-grid{grid-template-columns:6fr 6fr;gap:48px;}}
.hero h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.25;font-weight:700;color:var(--text);letter-spacing:0;
}
.hero h1 .hl{color:var(--brand-900);}
.hero-sub{margin-top:18px;font-size:16px;line-height:1.85;color:var(--text-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;height:220px;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--shadow-2);
}
@media (min-width:640px){.hero-media img{height:300px;}}
@media (min-width:1024px){.hero-media img{height:420px;}}
.hero-badge{
  position:absolute;left:16px;top:16px;display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:999px;
  padding:7px 14px;font-size:13px;color:var(--brand-900);box-shadow:var(--shadow-1);
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--success);}

/* ---------- 信任条 ---------- */
.trust{background:var(--brand-900);color:#fff;padding:36px 0;}
.trust-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px 16px;}
@media (min-width:900px){.trust-grid{grid-template-columns:repeat(4,1fr);gap:24px;}}
.trust-item .trust-num{font-size:30px;font-weight:700;line-height:1.1;color:#fff;}
@media (min-width:1024px){.trust-item .trust-num{font-size:36px;}}
.trust-item .trust-label{margin-top:8px;font-size:13px;color:#C9DAD5;line-height:1.6;}

/* ---------- 功能分组 交错大卡 ---------- */
.cap-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:1024px){
  .cap-grid{grid-template-columns:1.35fr 1fr;gap:28px;}
  .cap-grid .cap-card.wide{grid-column:span 1;}
  .cap-grid .row-2{grid-template-columns:1fr 1.35fr;}
}
.cap-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow-1);transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.cap-card:hover{border-color:var(--brand-300);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.cap-icon{
  width:40px;height:40px;border-radius:12px;background:var(--brand-050);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.cap-card h3{font-size:20px;font-weight:600;color:var(--text);}
.cap-card p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--text-2);}
.cap-list{margin-top:16px;display:grid;gap:8px;}
.cap-list li{position:relative;padding-left:20px;font-size:14px;color:var(--text-2);line-height:1.8;}
.cap-list li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:2px;background:var(--brand-300);
}
.cap-media{margin-top:20px;border-radius:12px;overflow:hidden;border:1px solid var(--line);}
.cap-media img{width:100%;height:170px;object-fit:cover;}

/* ---------- 场景 2x2 横向卡 ---------- */
.scene-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:700px){.scene-grid{grid-template-columns:repeat(2,1fr);gap:24px;}}
.scene-card{
  display:flex;gap:18px;align-items:flex-start;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);padding:22px;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.scene-card:hover{border-color:var(--brand-300);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.scene-card img{width:76px;height:76px;border-radius:12px;object-fit:cover;flex-shrink:0;}
@media (min-width:1024px){.scene-card img{width:96px;height:96px;}}
.scene-card h3{font-size:18px;font-weight:600;color:var(--text);}
.scene-card p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--text-2);}

/* ---------- 案例 非对称 ---------- */
.case-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:900px){.case-grid{grid-template-columns:repeat(4,1fr);gap:24px;}}
.case-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.case-card:hover{border-color:var(--brand-300);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.case-main{grid-column:span 1;}
.case-side{grid-column:span 1;}
@media (min-width:900px){
  .case-main{grid-column:span 2;display:flex;flex-direction:column;}
  .case-side{grid-column:span 1;}
}
.case-card img{width:100%;height:180px;object-fit:cover;}
.case-main img{height:240px;}
.case-body{padding:22px;}
.case-body h3{font-size:18px;font-weight:600;color:var(--text);line-height:1.5;}
.case-body p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--text-2);}
.case-result{
  margin-top:16px;padding-top:16px;border-top:1px dashed var(--line);
  display:flex;align-items:baseline;gap:10px;
}
.case-result .fig{font-size:30px;font-weight:700;color:var(--brand-700);line-height:1;}
.case-result .cap{font-size:13px;color:var(--text-3);}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:1fr;gap:24px;align-items:stretch;}
@media (min-width:1000px){.price-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
.price-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;display:flex;flex-direction:column;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.price-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand-300);}
.price-card.featured{border-color:var(--line);border-top:3px solid var(--accent);}
@media (min-width:1000px){.price-card.featured{transform:scale(1.02);box-shadow:var(--shadow-2);}}
.price-card.featured:hover{transform:scale(1.02) translateY(-2px);}
.price-name{font-size:18px;font-weight:600;color:var(--text);}
.price-note{margin-top:6px;font-size:13px;color:var(--text-3);}
.price-amount{margin-top:18px;display:flex;align-items:baseline;gap:6px;}
.price-amount .v{font-size:32px;font-weight:700;color:var(--brand-900);line-height:1;}
.price-amount .u{font-size:13px;color:var(--text-3);}
.price-list{margin:20px 0 24px;display:grid;gap:10px;}
.price-list li{position:relative;padding-left:24px;font-size:14px;color:var(--text-2);line-height:1.75;}
.price-list li::before{
  content:"✓";position:absolute;left:0;top:0;color:var(--brand-700);font-size:14px;font-weight:700;
}
.price-foot{margin-top:auto;}
.price-tip{margin-top:12px;font-size:12px;color:var(--text-3);line-height:1.7;}
.tag-pop{
  position:absolute;right:20px;top:-13px;background:var(--accent);color:#fff;
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;
}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:700px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);}}
.news-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.news-card:hover{border-color:var(--brand-300);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.news-thumb{display:block;overflow:hidden;}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.badge{
  display:inline-block;align-self:flex-start;font-size:12px;font-weight:600;color:var(--brand-700);
  background:var(--brand-050);border:1px solid var(--brand-300);border-radius:999px;padding:3px 10px;
}
.news-body h3{margin-top:12px;font-size:17px;font-weight:600;line-height:1.55;color:var(--text);}
.news-body h3 a{color:var(--text);text-decoration:none;}
.news-body h3 a:hover{color:var(--brand-700);text-decoration:none;}
.news-body p{
  margin-top:10px;font-size:14px;line-height:1.8;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}
.news-meta .more{color:var(--brand-700);font-weight:600;}
.news-meta .more:hover{color:var(--brand-900);}
.empty-state{
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:48px 24px;text-align:center;color:var(--text-2);
}
.empty-state p{font-size:15px;margin-bottom:18px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;}
.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;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:56px;padding:16px 0;font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .mark{flex-shrink:0;width:26px;height:26px;border-radius:50%;background:var(--brand-050);color:var(--brand-700);display:flex;align-items:center;justify-content:center;font-size:17px;line-height:1;font-weight:600;}
.faq-item[open] summary .mark{background:var(--accent);color:#fff;}
.faq-item .faq-body{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:760px;}

/* ---------- 结尾 CTA ---------- */
.cta-band{
  background:var(--brand-900);color:#fff;border-radius:var(--r-lg);
  padding:40px 28px;display:grid;gap:24px;align-items:center;
}
@media (min-width:900px){.cta-band{grid-template-columns:1.4fr 1fr;padding:52px 48px;gap:32px;}}
.cta-band h2{font-size:24px;font-weight:600;line-height:1.4;color:#fff;}
@media (min-width:1024px){.cta-band h2{font-size:28px;}}
.cta-band p{margin-top:12px;font-size:15px;line-height:1.8;color:#C9DAD5;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
@media (min-width:900px){.cta-actions{justify-content:flex-end;}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:#C9DAD5;margin-top:56px;}
@media (min-width:1024px){.site-footer{margin-top:96px;}}
.footer-main{padding:48px 0 32px;display:grid;grid-template-columns:1fr 1fr;gap:32px 24px;}
@media (min-width:900px){.footer-main{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding:64px 0 40px;}}
.footer-brand .logo-text{color:#fff;font-size:17px;}
.footer-brand .logo-mark{background:rgba(255,255,255,.08);}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:#9FBCB4;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:#C9DAD5;text-decoration:none;}
.footer-col a:hover{color:#fff;text-decoration:none;}
.footer-col li span{font-size:14px;color:#9FBCB4;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:#9FBCB4;
}
.footer-bottom a{color:#9FBCB4;}
.footer-bottom a:hover{color:#fff;}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:20px;bottom:24px;width:44px;height:44px;border-radius:12px;
  background:var(--brand-700);color:#fff;border:0;display:none;align-items:center;justify-content:center;
  box-shadow:var(--shadow-2);z-index:70;transition:background .2s ease,transform .2s ease;
}
.to-top.show{display:flex;}
.to-top:hover{background:var(--brand-900);transform:translateY(-2px);}

@media (max-width:520px){
  .hero h1{font-size:28px;}
  .section-title{font-size:22px !important;}
  .cta-band{padding:32px 20px;}
}

/* roulang page: category1 */
:root{
  --brand-900:#0F3A34;
  --brand-700:#17695C;
  --brand-300:#8FC7BC;
  --brand-050:#EDF4F1;
  --accent:#D2603A;
  --accent-dark:#B84E2C;
  --bg:#FAF8F4;
  --surface:#FFFFFF;
  --surface-2:#F1EDE6;
  --text:#16211F;
  --text-2:#4A5854;
  --text-3:#7C8A85;
  --line:#E5E0D7;
  --ok:#2E7D5B;
  --warn:#C9862B;
  --err:#B4432F;
  --radius-btn:10px;
  --radius-card:16px;
  --radius-hero:24px;
  --shadow-1:0 1px 2px rgba(15,58,52,.06);
  --shadow-2:0 10px 28px -14px rgba(15,58,52,.22);
  --container:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter","SF Pro Text",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease,background-color .2s ease;}
a:hover{color:var(--brand-900);text-decoration:underline;text-underline-offset:3px;}
button{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
::selection{background:var(--brand-300);color:var(--brand-900);}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--brand-900);color:#EDF4F1;font-size:13px;line-height:36px;}
.topbar-inner{display:flex;align-items:center;gap:20px;justify-content:space-between;}
.topbar-domain{color:#8FC7BC;font-family:var(--font-num);letter-spacing:.02em;white-space:nowrap;}
.topbar-tip{color:#C9DAD5;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.topbar-actions{display:flex;align-items:center;gap:18px;white-space:nowrap;}
.topbar-actions a{color:#EDF4F1;font-weight:500;}
.topbar-actions a:hover{color:#fff;}
.topbar-phone{color:#8FC7BC;font-family:var(--font-num);}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:60;}
.mainnav{
  background:rgba(250,248,244,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background-color .25s ease;
}
.mainnav.scrolled{box-shadow:var(--shadow-2);background:#fff;}
.mainnav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--brand-900);font-size:18px;letter-spacing:0;}
.logo:hover{text-decoration:none;color:var(--brand-900);}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;background:var(--brand-050);flex:0 0 auto;}
.logo-text{white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-links a{
  position:relative;
  color:var(--text-2);
  font-size:15px;
  font-weight:500;
  padding:22px 2px;
  display:inline-flex;
  align-items:center;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:center;transition:transform .22s ease;
}
.nav-links a:hover{color:var(--brand-900);text-decoration:none;}
.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-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--brand-900);
  cursor:pointer;
}
.nav-toggle:hover{background:var(--surface-2);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  padding:12px 22px;
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,transform .16s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:#fff;color:var(--brand-900);border-color:var(--brand-900);}
.btn-secondary:hover{background:var(--surface-2);color:var(--brand-900);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none;}

/* ============ 面包屑 ============ */
.breadcrumb{padding-top:22px;font-size:13px;color:var(--text-3);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li::after{content:"/";margin-left:8px;color:var(--line);}
.breadcrumb li:last-child::after{content:"";}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .current{color:var(--text-2);}

/* ============ 分类页 Hero ============ */
.cat-hero{padding:34px 0 64px;}
.cat-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-050);color:var(--brand-700);
  border:1px solid rgba(23,105,92,.16);
  border-radius:999px;
  padding:6px 14px;font-size:13px;font-weight:600;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}
.cat-hero h1{
  margin-top:18px;
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.25;font-weight:700;color:var(--brand-900);
}
.cat-hero h1 .hl{
  background:linear-gradient(transparent 62%,rgba(143,199,188,.55) 62%);
  padding:0 2px;
}
.cat-hero .lead{margin-top:18px;font-size:17px;color:var(--text-2);max-width:560px;}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-note{margin-top:16px;font-size:13px;color:var(--text-3);}
.hero-media{position:relative;}
.hero-media img{
  width:100%;height:360px;object-fit:cover;
  border-radius:var(--radius-hero);
  box-shadow:var(--shadow-2);
}
.hero-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-hero);
  background:linear-gradient(140deg,rgba(15,58,52,.34),rgba(15,58,52,0) 62%);
  pointer-events:none;
}
.badge-float{
  position:absolute;left:20px;top:20px;z-index:2;
  background:#fff;border-radius:999px;padding:8px 16px;
  font-size:13px;font-weight:600;color:var(--brand-900);
  box-shadow:var(--shadow-2);display:inline-flex;align-items:center;gap:8px;
}
.badge-float .pulse{width:8px;height:8px;border-radius:50%;background:var(--ok);}

/* ============ 数字条 ============ */
.stat-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface);}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:26px 0;}
.stat-item{text-align:left;padding-left:16px;border-left:2px solid var(--brand-300);}
.stat-item .v{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:30px;font-weight:700;color:var(--brand-900);line-height:1.2;}
.stat-item .k{margin-top:6px;font-size:13px;color:var(--text-3);}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section.tint{background:var(--brand-050);}
.section-head{max-width:680px;margin-bottom:48px;}
.section-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:600;color:var(--brand-900);letter-spacing:0;}
.section-head h2::after{content:"";display:block;width:44px;height:3px;background:var(--accent);margin-top:14px;border-radius:2px;}
.section-head p{margin-top:16px;color:var(--text-2);font-size:16px;}

/* ============ 功能交错大卡 ============ */
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);margin-bottom:28px;
  transition:border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.feature-row:hover{border-color:var(--brand-300);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.feature-row .feature-media{position:relative;min-height:280px;}
.feature-row .feature-media img{width:100%;height:100%;min-height:280px;object-fit:cover;}
.feature-row .feature-media .tagline{
  position:absolute;left:18px;bottom:18px;
  background:rgba(255,255,255,.94);color:var(--brand-900);
  border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;
}
.feature-body{padding:38px 40px;display:flex;flex-direction:column;justify-content:center;}
.feature-row.reverse .feature-media{order:2;}
.feature-row.reverse .feature-body{order:1;}
.feature-icon{
  width:40px;height:40px;border-radius:12px;background:var(--brand-050);
  display:flex;align-items:center;justify-content:center;color:var(--brand-700);margin-bottom:18px;
}
.feature-body h3{font-size:21px;font-weight:600;color:var(--brand-900);}
.feature-body p{margin-top:12px;color:var(--text-2);font-size:15px;}
.tick-list{margin-top:18px;display:grid;gap:10px;}
.tick-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);align-items:flex-start;}
.tick-list li svg{flex:0 0 auto;margin-top:6px;color:var(--brand-700);}

/* ============ 参数对照表 ============ */
.table-wrap{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
}
.table-scroll{overflow-x:auto;}
.param-table{width:100%;border-collapse:collapse;min-width:760px;font-size:14.5px;}
.param-table caption{text-align:left;padding:20px 24px 4px;font-size:13px;color:var(--text-3);}
.param-table th{
  background:var(--brand-050);color:var(--brand-900);
  font-weight:600;font-size:14px;text-align:left;
  padding:16px 22px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.param-table td{padding:16px 22px;border-bottom:1px solid var(--line);color:var(--text-2);vertical-align:top;}
.param-table tbody tr:last-child td{border-bottom:0;}
.param-table tbody tr:hover{background:#FBF9F5;}
.param-table td:first-child{color:var(--brand-900);font-weight:600;white-space:nowrap;}
.param-table td .num{color:var(--text);}
.table-hint{display:none;padding:12px 22px 18px;font-size:13px;color:var(--text-3);}

/* ============ 落地说明两栏 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:32px;}
.split-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px;box-shadow:var(--shadow-1);
}
.split-card h3{font-size:20px;font-weight:600;color:var(--brand-900);}
.split-card p{margin-top:12px;color:var(--text-2);font-size:15px;}
.split-card ul{margin-top:18px;display:grid;gap:12px;}
.split-card li{display:flex;gap:12px;font-size:14.5px;color:var(--text-2);}
.split-card li b{color:var(--brand-900);font-weight:600;flex:0 0 auto;}

/* ============ 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:20px;
  padding:20px 4px;font-size:17px;font-weight:600;color:var(--brand-900);min-height:56px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .mark{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  color:var(--brand-700);font-size:16px;line-height:1;transition:transform .2s ease,background-color .2s ease;
}
.faq-item[open] summary .mark{background:var(--brand-050);transform:rotate(45deg);}
.faq-item .answer{padding:0 4px 22px;font-size:15px;color:var(--text-2);max-width:820px;}

/* ============ CTA 横幅 ============ */
.cta-band{
  background:var(--brand-900);color:#EDF4F1;border-radius:var(--radius-hero);
  padding:52px 48px;display:flex;align-items:center;justify-content:space-between;gap:36px;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(143,199,188,.22),rgba(143,199,188,0) 68%);
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:600;color:#fff;position:relative;}
.cta-band p{margin-top:12px;color:#C9DAD5;font-size:15px;max-width:560px;position:relative;}
.cta-band .actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:#C9DAD5;margin-top:96px;}
.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 44px;}
.footer-brand .logo{color:#fff;font-size:17px;}
.footer-brand .logo:hover{color:#fff;text-decoration:none;}
.footer-brand .logo-mark{background:rgba(143,199,188,.14);}
.footer-brand p{margin-top:16px;font-size:14px;color:#9FB6B0;max-width:320px;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul{display:grid;gap:12px;}
.footer-col a{color:#C9DAD5;font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-col span{font-size:14px;color:#9FB6B0;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8FA8A2;
}
.footer-bottom .num{color:#A9C0BA;}

/* ============ 返回顶部 ============ */
.backtop{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:12px;
  background:#fff;border:1px solid var(--line);color:var(--brand-900);
  display:none;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:var(--shadow-2);z-index:70;transition:background-color .2s ease,transform .2s ease;
}
.backtop.show{display:flex;}
.backtop:hover{background:var(--brand-050);transform:translateY(-2px);}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .cat-hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-media img{height:300px;}
  .feature-row{grid-template-columns:1fr;}
  .feature-row.reverse .feature-media{order:0;}
  .feature-row.reverse .feature-body{order:1;}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
  .split{grid-template-columns:1fr;}
  .footer-main{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px;}

  .nav-toggle{display:inline-flex;}
  .nav-links{
    position:fixed;left:0;right:0;top:104px;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:8px 20px 24px;
    border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-2);
    max-height:calc(100vh - 104px);overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
  }
  .nav-links.open{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-links a{
    height:52px;padding:0;justify-content:space-between;font-size:16px;
    border-bottom:1px solid var(--line);
  }
  .nav-links a::after{display:none;}
  .nav-links a::before{
    content:"";order:2;width:8px;height:8px;border-right:2px solid var(--brand-300);border-bottom:2px solid var(--brand-300);
    transform:rotate(-45deg);
  }
  .nav-links a.active{color:var(--brand-700);}
  .nav-cta .btn-sm{display:none;}
}

@media (max-width:767px){
  .topbar-inner{gap:12px;}
  .topbar-domain,.topbar-phone{display:none;}
  .topbar-tip{font-size:12.5px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .cat-hero{padding:24px 0 48px;}
  .hero-media img{height:220px;}
  .feature-body{padding:26px 22px;}
  .feature-row .feature-media,.feature-row .feature-media img{min-height:200px;}
  .table-hint{display:block;}
  .stat-item .v{font-size:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .backtop{right:16px;bottom:16px;}
}

@media (max-width:520px){
  .container{padding-left:20px;padding-right:20px;}
  .stat-grid{grid-template-columns:1fr 1fr;}
  .hero-actions .btn{width:100%;}
  .cta-band{padding:32px 22px;}
  .cta-band .actions{width:100%;}
  .cta-band .actions .btn{width:100%;}
  .footer-main{grid-template-columns:1fr;gap:28px;}
}

/* roulang page: article */
:root{
  --brand-900:#0F3A34;
  --brand-700:#17695C;
  --brand-300:#8FC7BC;
  --brand-050:#EDF4F1;
  --accent:#D2603A;
  --accent-700:#B84E2C;
  --bg:#FAF8F4;
  --surface:#FFFFFF;
  --surface-2:#F1EDE6;
  --text:#16211F;
  --text-2:#4A5854;
  --text-3:#7C8A85;
  --line:#E5E0D7;
  --ok:#2E7D5B;
  --warn:#C9862B;
  --err:#B4432F;
  --radius-btn:10px;
  --radius-card:16px;
  --radius-lg:24px;
  --shadow-1:0 1px 2px rgba(15,58,52,.06);
  --shadow-2:0 10px 28px -14px rgba(15,58,52,.22);
  --container:1200px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter","SF Pro Text",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body.site-body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  overflow-x:hidden;
}
body.site-body h1,
body.site-body h2,
body.site-body h3,
body.site-body h4,
body.site-body h5,
body.site-body h6{margin:0;font-weight:600;letter-spacing:0;color:var(--text);}
body.site-body p{margin:0;}
img{max-width:100%;display:block;height:auto;border:0;}
a{color:var(--brand-700);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-900);text-decoration:underline;text-underline-offset:3px;}
button,input,textarea,select{font:inherit;color:inherit;}
ul,ol{list-style:none;margin:0;padding:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
::selection{background:var(--brand-300);color:var(--brand-900);}

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

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand-900);color:var(--brand-050);font-size:13px;}
.topbar-inner{height:36px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.topbar-domain{color:var(--brand-300);letter-spacing:.02em;}
.topbar-tip{color:#C9DAD5;}
.topbar-actions{display:flex;align-items:center;gap:16px;}
.topbar-actions a{color:#FFFFFF;border-bottom:1px solid rgba(255,255,255,.35);padding-bottom:1px;}
.topbar-actions a:hover{color:#fff;border-color:var(--accent);text-decoration:none;}
.topbar-phone{color:var(--brand-300);font-family:var(--font-num);letter-spacing:.02em;}
@media (max-width:767px){
  .topbar-domain,.topbar-phone{display:none;}
  .topbar-inner{gap:12px;}
  .topbar-tip{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
}

/* ---------- 主导航 ---------- */
.mainnav{position:sticky;top:0;z-index:60;background:#FAF8F4;border-bottom:1px solid var(--line);transition:box-shadow .22s ease;}
.mainnav.scrolled{box-shadow:var(--shadow-1);}
.mainnav-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.logo:hover{text-decoration:none;}
.logo-mark{width:36px;height:36px;border-radius:11px;background:var(--brand-050);display:inline-flex;align-items:center;justify-content:center;border:1px solid #DCE8E3;}
.logo-text{font-size:19px;font-weight:700;color:var(--brand-900);white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{position:relative;display:inline-flex;align-items:center;height:68px;padding:0 12px;font-size:15px;color:var(--text-2);white-space:nowrap;}
.nav-links a:hover{color:var(--brand-900);text-decoration:none;}
.nav-links a.active{color:var(--brand-900);font-weight:600;}
.nav-links a.active::after{content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;background:var(--accent);border-radius:2px;}
.nav-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{display:none;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--radius-btn);background:#fff;border:1px solid var(--line);color:var(--brand-900);cursor:pointer;transition:background .18s ease,border-color .18s ease;}
.nav-toggle:hover{background:var(--surface-2);border-color:var(--brand-300);}
.nav-drawer-cta{display:none;}

@media (max-width:1023px){
  .nav-links{
    position:fixed;left:0;right:0;top:0;bottom:0;background:#fff;z-index:55;
    flex-direction:column;align-items:stretch;gap:0;
    padding:124px 20px 32px;overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
    border-bottom:1px solid var(--line);
  }
  .nav-links.open{opacity:1;visibility:visible;transform:none;}
  .nav-links a{height:52px;justify-content:space-between;font-size:16px;color:var(--text);border-bottom:1px solid var(--line);padding:0 4px;}
  .nav-links a.active{color:var(--brand-700);}
  .nav-links a.active::after{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-cta .btn-primary{display:none;}
  .nav-drawer-cta{display:inline-flex;margin-top:22px;height:48px;width:100%;}
}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;text-decoration:none;transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--brand-700);color:#fff;}
.btn-primary:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:none;box-shadow:none;}
.btn-ghost{background:#fff;border-color:var(--brand-900);color:var(--brand-900);}
.btn-ghost:hover{background:var(--surface-2);color:var(--brand-900);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-accent:active{transform:none;box-shadow:none;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 通用徽章 / 小标题 ---------- */
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--brand-050);color:var(--brand-700);font-size:13px;font-weight:600;letter-spacing:.01em;}
.badge-light{background:rgba(255,255,255,.16);color:#fff;}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-700);letter-spacing:.04em;}
.kicker::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:600;color:var(--brand-900);margin-top:12px;}
.section-head p{margin-top:12px;font-size:15px;color:var(--text-2);}
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:88px 0;}}

/* ---------- 文章头区 ---------- */
.article-hero{position:relative;background:var(--brand-900) url('/assets/images/backpic/back-1.webp') center/cover no-repeat;color:#fff;padding:40px 0 56px;}
.article-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(15,58,52,.95) 0%,rgba(15,58,52,.82) 52%,rgba(15,58,52,.42) 100%);}
.article-hero .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:22px;}
.breadcrumb a{color:rgba(255,255,255,.78);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:rgba(255,255,255,.4);}
.breadcrumb .current{color:#fff;}
.article-title{font-size:clamp(26px,3.6vw,40px);line-height:1.34;font-weight:700;color:#fff;max-width:860px;letter-spacing:0;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:20px;font-size:13px;color:rgba(255,255,255,.78);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.42);display:inline-block;}

/* ---------- 正文布局 ---------- */
.article-wrap{background:var(--bg);padding:56px 0 72px;}
@media (min-width:1024px){.article-wrap{padding:72px 0 88px;}}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,760px) 232px;justify-content:center;gap:48px;}
}
.article-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 22px;box-shadow:var(--shadow-1);}
@media (min-width:768px){.article-panel{padding:44px 48px;}}
.article-content{max-width:760px;font-size:16px;line-height:1.85;color:#22302C;word-wrap:break-word;}
.article-content > *:first-child{margin-top:0;}
.article-content p{margin:0 0 1.05em;}
.article-content h2{font-size:clamp(20px,2.3vw,26px);font-weight:600;line-height:1.45;color:var(--brand-900);margin:1.9em 0 .8em;padding-left:14px;border-left:4px solid var(--brand-300);scroll-margin-top:104px;}
.article-content h3{font-size:20px;font-weight:600;line-height:1.5;color:var(--brand-900);margin:1.6em 0 .6em;scroll-margin-top:104px;}
.article-content h4{font-size:17px;font-weight:600;color:var(--text);margin:1.4em 0 .5em;}
.article-content ul,
.article-content ol{margin:0 0 1.1em;padding-left:1.35em;}
.article-content ul li{position:relative;margin:.45em 0;padding-left:6px;}
.article-content ul li::before{content:"";position:absolute;left:-12px;top:.75em;width:6px;height:6px;border-radius:50%;background:var(--brand-300);}
.article-content ol{list-style:decimal;}
.article-content ol li{margin:.45em 0;}
.article-content blockquote{margin:1.5em 0;padding:16px 22px;background:var(--brand-050);border-left:3px solid var(--brand-700);border-radius:0 12px 12px 0;color:var(--text-2);}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{border-radius:var(--radius-card);margin:1.5em 0;}
.article-content figure{margin:1.5em 0;}
.article-content figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-content a{color:var(--brand-700);border-bottom:1px solid var(--brand-300);}
.article-content a:hover{color:var(--brand-900);border-color:var(--brand-900);text-decoration:none;}
.article-content strong{font-weight:600;color:var(--brand-900);}
.article-content hr{border:0;border-top:1px solid var(--line);margin:2em 0;}
.article-content table{width:100%;border-collapse:collapse;font-size:14px;margin:1.5em 0;line-height:1.7;}
.article-content th,
.article-content td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top;}
.article-content th{background:var(--brand-050);font-weight:600;color:var(--brand-900);}
.article-content tbody tr:nth-child(even){background:#FBFAF7;}
.article-content pre{background:var(--brand-900);color:#DCEBE7;padding:18px 20px;border-radius:12px;overflow-x:auto;font-size:14px;line-height:1.7;margin:1.5em 0;}
.article-content code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;}
.article-content p code,
.article-content li code{background:var(--surface-2);color:var(--brand-900);padding:2px 6px;border-radius:6px;}
@media (max-width:640px){
  .article-content table{display:block;overflow-x:auto;white-space:nowrap;}
  .article-panel{padding:22px 18px;border-radius:var(--radius-card);}
}

/* 目录 */
.toc{position:sticky;top:96px;align-self:start;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:18px 20px;box-shadow:var(--shadow-1);}
.toc h4{font-size:13px;font-weight:600;color:var(--text-3);letter-spacing:.06em;margin-bottom:12px;}
.toc ul{display:grid;gap:2px;}
.toc a{display:block;padding:6px 0 6px 10px;font-size:14px;color:var(--text-2);border-left:2px solid transparent;line-height:1.6;}
.toc a:hover{color:var(--brand-700);border-color:var(--brand-300);text-decoration:none;}
@media (max-width:1023px){.toc-wrap{display:none;}}

/* 空态 */
.empty-state{text-align:center;padding:40px 12px;}
.empty-state h2{font-size:22px;color:var(--brand-900);margin-bottom:12px;}
.empty-state p{color:var(--text-2);margin-bottom:24px;}

/* 标签行 */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line);}
.tag-row .tag-label{font-size:13px;color:var(--text-3);}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;background:var(--surface-2);color:var(--text-2);font-size:13px;transition:background .18s ease,color .18s ease;}
.tag:hover{background:var(--brand-050);color:var(--brand-700);text-decoration:none;}

/* 上一篇 / 下一篇 */
.post-nav{display:grid;grid-template-columns:1fr;gap:16px;margin-top:44px;}
@media (min-width:768px){.post-nav{grid-template-columns:1fr 1fr;}}
.post-nav-card{display:flex;flex-direction:column;gap:6px;padding:20px 22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;}
.post-nav-card:hover{border-color:var(--brand-300);transform:translateY(-2px);box-shadow:var(--shadow-2);text-decoration:none;}
.post-nav-label{font-size:13px;color:var(--text-3);}
.post-nav-title{font-size:16px;font-weight:600;color:var(--brand-900);line-height:1.6;}

/* 资讯卡 */
.post-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:640px){.post-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.post-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.post-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;}
.post-card:hover{border-color:var(--brand-300);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.post-card-link{display:block;height:100%;}
.post-card-link:hover{text-decoration:none;}
.post-card-media{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2);}
.post-card-media img{width:100%;height:100%;object-fit:cover;}
.post-card-body{display:block;padding:20px 22px 22px;}
.post-card-title{font-size:17px;font-weight:600;color:var(--brand-900);line-height:1.6;margin:12px 0 10px;}
.post-card-desc{font-size:14px;line-height:1.8;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:16px;font-size:13px;color:var(--text-3);}
.post-card-more{color:var(--brand-700);font-weight:600;}

/* CTA 横幅 */
.cta-band{background:var(--brand-900);border-radius:var(--radius-lg);padding:40px 24px;color:#fff;position:relative;overflow:hidden;}
.cta-band::after{content:"";position:absolute;right:-60px;bottom:-80px;width:260px;height:260px;border-radius:50%;border:1px solid rgba(143,199,188,.28);}
.cta-band h2{font-size:clamp(21px,2.4vw,28px);color:#fff;font-weight:600;line-height:1.45;}
.cta-band p{margin-top:14px;color:#C9DAD5;font-size:15px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;position:relative;z-index:1;}
@media (min-width:900px){
  .cta-band{padding:56px 56px;display:flex;align-items:center;justify-content:space-between;gap:40px;}
  .cta-band .cta-text{max-width:640px;}
  .cta-actions{margin-top:0;flex:0 0 auto;}
}

/* 页脚 */
.site-footer{background:var(--brand-900);color:#C9DAD5;padding:56px 0 24px;margin-top:0;}
.footer-main{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:768px){.footer-main{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo-mark{background:rgba(143,199,188,.14);border-color:rgba(143,199,188,.24);}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:#A9C2BB;max-width:340px;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-col ul{display:grid;gap:10px;font-size:14px;}
.footer-col a{color:#C9DAD5;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-col span{color:#A9C2BB;}
.footer-bottom{margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px;color:#9FB8B1;}

/* 返回顶部 */
.back-top{position:fixed;right:20px;bottom:24px;width:44px;height:44px;border-radius:12px;background:var(--brand-900);color:#fff;display:flex;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.14);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .24s ease,transform .24s ease,visibility .24s ease,background .18s ease;z-index:70;}
.back-top.show{opacity:1;visibility:visible;transform:none;}
.back-top:hover{background:var(--brand-700);}

/* roulang page: category3 */
:root{
  --brand-900:#0F3A34;
  --brand-700:#17695C;
  --brand-300:#8FC7BC;
  --brand-050:#EDF4F1;
  --accent:#D2603A;
  --accent-dark:#B84E2C;
  --bg:#FAF8F4;
  --surface:#FFFFFF;
  --surface-2:#F1EDE6;
  --text:#16211F;
  --text-2:#4A5854;
  --text-3:#7C8A85;
  --line:#E5E0D7;
  --ok:#2E7D5B;
  --warn:#C9862B;
  --err:#B4432F;
  --radius-btn:10px;
  --radius-card:16px;
  --radius-lg:24px;
  --shadow-sm:0 1px 2px rgba(15,58,52,.06);
  --shadow-md:0 10px 28px -14px rgba(15,58,52,.22);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);font-family:var(--font-cn);
  font-size:16px;line-height:1.85;letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-700);text-decoration:none;transition:color .18s ease,background-color .18s ease}
a:hover{color:var(--brand-900);text-decoration:underline;text-underline-offset:3px}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:0;line-height:1.3}
h1{font-size:clamp(30px,4.2vw,46px);font-weight:700;line-height:1.25}
h2{font-size:clamp(24px,3vw,32px);font-weight:600}
h3{font-size:20px;font-weight:600}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0}
li{list-style:none}
button{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;background:#fff;color:var(--brand-900);padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand-900);color:var(--brand-050);font-size:13px;line-height:1}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px}
.topbar-domain{color:#9FBCB4;letter-spacing:.02em;white-space:nowrap}
.topbar-tip{color:#C9DAD5;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar-actions{display:flex;align-items:center;gap:18px;white-space:nowrap}
.topbar-actions a{color:#FFFFFF}
.topbar-actions a:hover{color:var(--brand-300);text-decoration:none}
.topbar-phone{color:var(--brand-300);font-variant-numeric:tabular-nums}
@media (max-width:767px){
  .topbar-domain{display:none}
  .topbar-phone{display:none}
  .topbar-tip{font-size:12px}
}

/* ---------- 主导航 ---------- */
.site-header{position:relative;z-index:80}
.mainnav{position:sticky;top:0;z-index:80;background:rgba(250,248,244,.97);border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.mainnav.scrolled{box-shadow:var(--shadow-md)}
.mainnav-inner{display:flex;align-items:center;gap:20px;height:68px}
.logo{display:flex;align-items:center;gap:10px;color:var(--brand-900);font-weight:700;font-size:18px;white-space:nowrap}
.logo:hover{color:var(--brand-900);text-decoration:none}
.logo-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:var(--brand-050);flex:0 0 auto}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{position:relative;display:block;padding:22px 12px;font-size:15px;font-weight:500;color:var(--text-2)}
.nav-links a:hover{color:var(--brand-900);text-decoration:none}
.nav-links a.active{color:var(--brand-900);font-weight:600}
.nav-links a.active::after{content:"";position:absolute;left:12px;right:12px;bottom:14px;height:2px;background:var(--accent);border-radius:2px}
.nav-cta{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;color:var(--brand-900);align-items:center;justify-content:center;cursor:pointer}
.nav-toggle:hover{background:var(--surface-2)}
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .nav-links{display:none;position:fixed;inset:0;z-index:120;background:#fff;flex-direction:column;align-items:stretch;padding:88px 20px 32px;gap:0;margin:0;overflow-y:auto}
  .nav-links.show{display:flex}
  .nav-links a{padding:16px 0;border-bottom:1px solid var(--line);font-size:16px}
  .nav-links a.active::after{display:none}
  .nav-links a.active{color:var(--brand-700)}
  .nav-cta .btn{display:none}
}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;line-height:1;padding:13px 22px;border-radius:var(--radius-btn);border:1px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;min-height:44px}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--brand-700);color:#fff}
.btn-primary:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:none;box-shadow:var(--shadow-sm)}
.btn-secondary{background:#fff;border-color:var(--brand-900);color:var(--brand-900)}
.btn-secondary:hover{background:var(--surface-2);color:var(--brand-900)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-sm{padding:10px 16px;font-size:14px;min-height:40px}
.btn-lg{padding:15px 28px;font-size:16px}
.btn[disabled]{opacity:.45;cursor:not-allowed}

/* ---------- 通用区块 ---------- */
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.section-alt{background:var(--brand-050)}
.section-head{max-width:720px;margin-bottom:32px}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:16px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-700);background:var(--brand-050);border:1px solid var(--brand-300);border-radius:999px;padding:6px 14px;margin-bottom:18px}
.tag{display:inline-block;font-size:12px;font-weight:600;color:var(--brand-700);background:var(--brand-050);border:1px solid var(--brand-300);border-radius:999px;padding:4px 12px;margin-bottom:12px}
.breadcrumb{font-size:13px;color:var(--text-3);padding-top:24px}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb .sep{margin:0 8px;color:#C6C0B4}
.breadcrumb .current{color:var(--text-2)}

/* ---------- 小 Hero ---------- */
.page-hero{padding:32px 0 56px;background:linear-gradient(180deg,var(--surface-2) 0%,rgba(250,248,244,0) 100%)}
@media (min-width:1024px){.page-hero{padding:40px 0 88px}}
.page-hero-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
@media (min-width:1024px){.page-hero-grid{grid-template-columns:1.05fr .95fr;gap:56px}}
.page-hero h1{margin-bottom:16px}
.hero-sub{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
.hero-note{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:var(--text-3)}
.hero-note span{display:inline-flex;align-items:center;gap:6px}
.hero-note span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-300);flex:0 0 auto}
.hero-media{position:relative}
.hero-media img{width:100%;height:240px;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}
@media (min-width:768px){.hero-media img{height:320px}}
@media (min-width:1024px){.hero-media img{height:400px}}
.hero-badge{position:absolute;left:16px;top:16px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 14px;font-size:13px;font-weight:600;color:var(--brand-900);box-shadow:var(--shadow-sm);font-variant-numeric:tabular-nums}

/* ---------- 案例非对称网格 ---------- */
.case-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:1024px){.case-grid{grid-template-columns:1.3fr 1fr}}
.case-card{display:flex;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}
.case-card:hover{border-color:var(--brand-300);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.case-card-lg{flex-direction:column}
@media (min-width:1024px){.case-card-lg{grid-row:span 2}}
.case-card-lg img{width:100%;height:220px;object-fit:cover}
@media (min-width:768px){.case-card-lg img{height:280px}}
.case-body{padding:24px}
.case-body h3{margin-bottom:10px;font-size:19px}
.case-body p{font-size:15px;color:var(--text-2);margin-bottom:16px}
.case-points{display:grid;gap:8px}
.case-points li{position:relative;padding-left:18px;font-size:14px;color:var(--text-2)}
.case-points li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--brand-300)}
.kpi-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}
.kpi{background:var(--brand-050);border-radius:12px;padding:12px 16px;min-width:132px}
.kpi b{display:block;font-size:22px;font-weight:700;color:var(--brand-900);font-variant-numeric:tabular-nums;line-height:1.2}
.kpi span{font-size:13px;color:var(--text-3)}
.case-card-sm{flex-direction:row;align-items:stretch}
.case-card-sm img{width:112px;min-width:112px;height:100%;object-fit:cover}
@media (min-width:640px){.case-card-sm img{width:148px;min-width:148px}}
.case-card-sm .case-body{padding:20px}
.case-card-sm .case-body h3{font-size:17px}
.case-card-sm .case-body p{font-size:14px;margin-bottom:10px}

/* ---------- 数据统计条 ---------- */
.stats-band{background:var(--brand-900);border-radius:var(--radius-lg);padding:40px 24px;color:#fff}
@media (min-width:768px){.stats-band{padding:48px 40px}}
.stats-band h2{color:#fff;font-size:22px;margin-bottom:8px}
.stats-band .stats-lead{color:#9FBCB4;font-size:14px;margin-bottom:32px}
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
@media (min-width:1024px){.stats-grid{grid-template-columns:repeat(4,1fr);gap:32px}}
.stat-num{font-size:clamp(30px,3.4vw,40px);font-weight:700;line-height:1.1;color:#fff;font-variant-numeric:tabular-nums;font-family:"Inter","SF Pro Text",system-ui,sans-serif}
.stat-num small{font-size:16px;font-weight:600;margin-left:2px}
.stat-label{font-size:13px;color:#C9DAD5;margin-top:8px;line-height:1.6}

/* ---------- 客户引述 ---------- */
.quote-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:768px){.quote-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.quote-grid{grid-template-columns:repeat(3,1fr)}}
.quote-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;display:flex;flex-direction:column;gap:18px;transition:border-color .2s ease,transform .2s ease}
.quote-card:hover{border-color:var(--brand-300);transform:translateY(-2px)}
.quote-card blockquote{margin:0;font-size:16px;color:var(--text);line-height:1.8}
.quote-card blockquote::before{content:"“";display:block;font-size:34px;line-height:1;color:var(--brand-300);margin-bottom:8px}
.quote-meta{display:flex;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:16px;font-size:13px;color:var(--text-3)}
.quote-avatar{width:38px;height:38px;border-radius:50%;background:var(--brand-050);color:var(--brand-700);display:grid;place-items:center;font-weight:700;font-size:14px;flex:0 0 auto}

/* ---------- 行业对照表 ---------- */
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm)}
table{width:100%;border-collapse:collapse;min-width:820px}
thead th{background:var(--brand-050);color:var(--brand-900);font-size:14px;font-weight:600;text-align:left;padding:16px 20px;white-space:nowrap}
tbody td{padding:18px 20px;font-size:15px;color:var(--text-2);border-top:1px solid var(--line);vertical-align:top}
tbody td strong{color:var(--text);font-weight:600}
tbody tr:hover td{background:#FCFBF8}
.table-hint{font-size:13px;color:var(--text-3);margin-top:12px}
@media (max-width:767px){.table-hint{display:block}}

/* ---------- 流程步骤 ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:16px;margin-top:8px}
@media (min-width:768px){.steps{grid-template-columns:repeat(4,1fr);gap:20px}}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;position:relative}
.step-num{display:inline-grid;place-items:center;width:32px;height:32px;border-radius:10px;background:var(--brand-050);color:var(--brand-700);font-weight:700;font-size:14px;margin-bottom:14px;font-variant-numeric:tabular-nums}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-2);margin:0}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);max-width:900px}
.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:18px 0;cursor:pointer;font-size:17px;font-weight:600;color:var(--text);list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";color:var(--brand-700);font-size:22px;font-weight:400;line-height:1;flex:0 0 auto}
.faq-item[open] summary::after{content:"–"}
.faq-item summary:hover{color:var(--brand-700)}
.faq-body{padding:0 0 20px;font-size:15px;color:var(--text-2);max-width:820px}
.faq-body p{margin-bottom:.7em}

/* ---------- 结尾 CTA ---------- */
.cta-banner{background:var(--brand-900);color:#fff;padding:56px 0}
@media (min-width:1024px){.cta-banner{padding:80px 0}}
.cta-inner{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
@media (min-width:1024px){.cta-inner{grid-template-columns:1.4fr 1fr;gap:48px}}
.cta-banner h2{color:#fff;margin-bottom:12px}
.cta-banner p{color:#C9DAD5;font-size:16px;max-width:620px;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media (min-width:1024px){.cta-actions{justify-content:flex-end}}
.cta-banner .btn-secondary{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.cta-banner .btn-secondary:hover{background:rgba(255,255,255,.12);color:#fff}
.cta-small{font-size:13px;color:#9FBCB4;margin-top:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:#C9DAD5;padding:56px 0 28px;font-size:14px}
.footer-main{display:grid;grid-template-columns:1fr;gap:32px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.12)}
@media (min-width:768px){.footer-main{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-main{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}}
.site-footer .logo{color:#fff;font-size:17px;margin-bottom:16px}
.site-footer .logo:hover{color:#fff;text-decoration:none}
.footer-brand p{color:#9FBCB4;font-size:14px;max-width:320px;margin:0}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:#C9DAD5}
.footer-col a:hover{color:#fff}
.footer-col span{color:#9FBCB4}
.footer-bottom{display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;padding-top:22px;font-size:13px;color:#9FBCB4}

/* ---------- 返回顶部 ---------- */
.back-top{position:fixed;right:20px;bottom:20px;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--brand-900);display:grid;place-items:center;cursor:pointer;box-shadow:var(--shadow-sm);opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease,background-color .2s ease;z-index:90}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{background:var(--brand-050)}

/* roulang page: category2 */
:root{
    --brand-900:#0F3A34;
    --brand-700:#17695C;
    --brand-300:#8FC7BC;
    --brand-050:#EDF4F1;
    --accent:#D2603A;
    --accent-dark:#B84E2C;
    --bg:#FAF8F4;
    --surface:#FFFFFF;
    --surface-2:#F1EDE6;
    --text:#16211F;
    --text-2:#4A5854;
    --text-3:#7C8A85;
    --line:#E5E0D7;
    --ok:#2E7D5B;
    --warn:#C9862B;
    --err:#B4432F;
    --radius-btn:10px;
    --radius-card:16px;
    --radius-hero:24px;
    --shadow-1:0 1px 2px rgba(15,58,52,.06);
    --shadow-2:0 10px 28px -14px rgba(15,58,52,.22);
    --gutter:20px;
    --section-y:56px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border:0}
  a{color:var(--brand-700);text-decoration:none;transition:color .18s ease}
  a:hover{color:var(--brand-900);text-decoration:underline;text-underline-offset:3px}
  .num,.stat-num,.step-num,.quote-stats .num,.trust-num{font-variant-numeric:tabular-nums}
  a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{
    outline:2px solid var(--accent);outline-offset:2px;border-radius:8px;
  }
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--gutter)}
  @media (min-width:768px){:root{--gutter:32px;--section-y:88px}}
  @media (min-width:1024px){:root{--section-y:100px}}

  /* ---------- 顶部信息条 ---------- */
  .topbar{background:var(--brand-900);color:var(--brand-050);font-size:13px;height:36px;display:flex;align-items:center}
  .topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%}
  .topbar-domain{color:var(--brand-300);white-space:nowrap}
  .topbar-tip{color:#C9DAD5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .topbar-actions{display:flex;align-items:center;gap:16px;white-space:nowrap}
  .topbar-actions a{color:#fff;font-weight:600}
  .topbar-actions a:hover{color:var(--brand-300)}
  .topbar-phone{color:var(--brand-300);font-variant-numeric:tabular-nums}
  @media (max-width:767px){
    .topbar-domain{display:none}
    .topbar-phone{display:none}
    .topbar-tip{font-size:12px}
  }

  /* ---------- 主导航 ---------- */
  .site-header{position:relative;z-index:80}
  .mainnav{position:sticky;top:0;z-index:80;background:var(--bg);border-bottom:1px solid var(--line);transition:box-shadow .22s ease}
  .mainnav.is-scrolled{box-shadow:0 10px 28px -20px rgba(15,58,52,.34)}
  .mainnav-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
  .logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none}
  .logo:hover{text-decoration:none}
  .logo-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;background:var(--brand-050);border:1px solid var(--brand-300)}
  .logo-text{font-size:19px;font-weight:700;color:var(--brand-900);letter-spacing:0;white-space:nowrap}
  .nav-links{display:flex;align-items:center;gap:2px}
  .nav-links a{position:relative;display:inline-flex;align-items:center;padding:9px 12px;font-size:15px;color:var(--text-2);border-radius:8px;white-space:nowrap}
  .nav-links a:hover{color:var(--brand-900);background:var(--brand-050);text-decoration:none}
  .nav-links a.active{color:var(--brand-900);font-weight:600}
  .nav-links a.active::after{content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:2px;background:var(--accent);border-radius:2px}
  .nav-cta{display:flex;align-items:center;gap:12px}
  .nav-toggle{display:none;align-items:center;justify-content:center;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--brand-900);cursor:pointer}
  .nav-toggle:hover{background:var(--surface-2)}
  .drawer-cta{display:none}

  /* ---------- 按钮 ---------- */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:12px 22px;font-size:15px;font-weight:600;line-height:1.2;border-radius:var(--radius-btn);border:1px solid transparent;cursor:pointer;text-decoration:none;transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease}
  .btn:hover{text-decoration:none}
  .btn-primary{background:var(--brand-700);color:#fff}
  .btn-primary:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:0 10px 28px -14px rgba(15,58,52,.45)}
  .btn-primary:active{transform:none;box-shadow:none}
  .btn-secondary{background:var(--surface);color:var(--brand-900);border-color:var(--brand-900)}
  .btn-secondary:hover{background:var(--surface-2);color:var(--brand-900);transform:translateY(-1px)}
  .btn-accent{background:var(--accent);color:#fff}
  .btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 28px -14px rgba(210,96,58,.5)}
  .btn-accent:active{transform:none;box-shadow:none}
  .btn-sm{min-height:40px;padding:9px 16px;font-size:14px}
  .btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

  /* ---------- 面包屑 ---------- */
  .breadcrumb-wrap{padding:20px 0 0}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--text-3)}
  .breadcrumb a{color:var(--text-3)}
  .breadcrumb a:hover{color:var(--brand-700)}
  .breadcrumb .sep{color:#C4CFCA}
  .breadcrumb .current{color:var(--text-2)}

  /* ---------- 内页 Hero ---------- */
  .page-hero{padding:32px 0 0}
  .hero-grid{display:grid;gap:32px;align-items:center}
  .hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;color:var(--brand-700);background:var(--brand-050);border:1px solid var(--brand-300)}
  .hero-title{font-size:clamp(28px,3.6vw,40px);line-height:1.28;font-weight:700;color:var(--brand-900);letter-spacing:0;margin:20px 0 0}
  .hero-sub{font-size:17px;line-height:1.85;color:var(--text-2);margin:16px 0 0;max-width:580px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
  .hero-figure{position:relative;border-radius:var(--radius-hero);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1)}
  .hero-figure img{width:100%;height:230px;object-fit:cover}
  .hero-badge{position:absolute;left:16px;top:16px;display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;font-weight:600;color:var(--brand-900);box-shadow:var(--shadow-1)}
  .hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--ok)}
  @media (min-width:1024px){
    .page-hero{padding:48px 0 0}
    .hero-grid{grid-template-columns:1.05fr .95fr;gap:48px}
    .hero-figure img{height:380px}
  }

  /* ---------- 信任数据条 ---------- */
  .trust-bar{margin-top:40px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px 20px}
  .trust-grid{display:grid;gap:24px;grid-template-columns:repeat(2,1fr)}
  .trust-num{font-size:28px;font-weight:700;color:var(--brand-900);line-height:1.15}
  .trust-num small{font-size:15px;font-weight:600;color:var(--brand-700);margin-left:4px}
  .trust-lbl{font-size:13px;color:var(--text-3);margin-top:6px}
  @media (min-width:1024px){
    .trust-bar{padding:32px 36px}
    .trust-grid{grid-template-columns:repeat(4,1fr);gap:32px}
    .trust-num{font-size:34px}
  }

  /* ---------- 板块通用 ---------- */
  .section{padding:var(--section-y) 0 0}
  .section-alt{background:var(--brand-050);margin-top:var(--section-y);padding-bottom:var(--section-y)}
  .section-head{max-width:760px;margin-bottom:32px}
  .section-title{font-size:clamp(22px,2.4vw,30px);line-height:1.4;font-weight:600;color:var(--brand-900);letter-spacing:0;margin:0}
  .section-title::after{content:"";display:block;width:44px;height:3px;border-radius:2px;background:var(--accent);margin-top:14px}
  .section-title.no-rule::after{display:none}
  .section-desc{font-size:16px;line-height:1.85;color:var(--text-2);margin:16px 0 0}
  .eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.04em;color:var(--brand-700);margin-bottom:12px}

  /* ---------- 场景横向卡 ---------- */
  .scene-grid{display:grid;gap:20px}
  .scene-card{display:flex;gap:18px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1);transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}
  .scene-card:hover{border-color:var(--brand-300);transform:translateY(-2px);box-shadow:var(--shadow-2)}
  .scene-icon{flex:0 0 76px;width:76px;height:76px;border-radius:12px;overflow:hidden;border:1px solid var(--line)}
  .scene-icon img{width:100%;height:100%;object-fit:cover}
  .scene-body{min-width:0}
  .scene-card h3{font-size:18px;font-weight:600;color:var(--brand-900);margin:0 0 8px;line-height:1.5}
  .scene-card p{font-size:14px;line-height:1.8;color:var(--text-2);margin:0}
  .scene-tag{display:inline-flex;align-items:center;gap:6px;margin-top:12px;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:600;color:var(--brand-700);background:var(--brand-050);border:1px solid var(--brand-300)}
  @media (min-width:640px){
    .scene-grid{grid-template-columns:repeat(2,1fr)}
    .scene-icon{flex:0 0 96px;width:96px;height:96px}
  }
  @media (min-width:1024px){.scene-grid{gap:24px}}

  /* ---------- 步骤条 ---------- */
  .steps{display:grid;gap:16px;position:relative}
  .step{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px 20px;box-shadow:var(--shadow-1);transition:border-color .2s ease,transform .2s ease}
  .step:hover{border-color:var(--brand-300);transform:translateY(-2px)}
  .step-num{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;background:var(--brand-900);color:#fff;font-size:15px;font-weight:700;margin-bottom:14px}
  .step h3{font-size:17px;font-weight:600;color:var(--brand-900);margin:0}
  .step p{font-size:14px;line-height:1.8;color:var(--text-2);margin:10px 0 0}
  .step-meta{display:block;margin-top:14px;font-size:13px;font-weight:600;color:var(--brand-700)}
  @media (min-width:768px){
    .steps{grid-template-columns:repeat(4,1fr);gap:20px}
    .step:not(:last-child)::after{content:"";position:absolute;right:-13px;top:40px;width:8px;height:8px;border-top:2px solid var(--brand-300);border-right:2px solid var(--brand-300);transform:rotate(45deg)}
  }

  /* ---------- 非对称图文 ---------- */
  .split{display:grid;gap:32px;align-items:center}
  .split-figure{border-radius:var(--radius-hero);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1)}
  .split-figure img{width:100%;height:260px;object-fit:cover}
  .check-list{list-style:none;margin:0;padding:0;display:grid;gap:14px}
  .check-list li{position:relative;padding-left:32px;font-size:15px;line-height:1.8;color:var(--text-2)}
  .check-list li::before{content:"";position:absolute;left:0;top:6px;width:20px;height:20px;border-radius:6px;background:var(--brand-050);border:1px solid var(--brand-300)}
  .check-list li::after{content:"";position:absolute;left:7px;top:10px;width:5px;height:9px;border-right:2px solid var(--brand-700);border-bottom:2px solid var(--brand-700);transform:rotate(42deg)}
  .check-list strong{color:var(--brand-900);font-weight:600}
  @media (min-width:1024px){
    .split{grid-template-columns:1fr .85fr;gap:48px}
    .split-figure img{height:360px}
  }

  /* ---------- 引述案例条 ---------- */
  .quote-band{background:var(--brand-900);border-radius:var(--radius-hero);padding:36px 26px;color:#C9DAD5}
  .quote-mark{font-size:40px;line-height:1;color:var(--brand-300);font-weight:700;margin:0 0 8px}
  .quote-text{font-size:17px;line-height:1.9;color:#fff;margin:0}
  .quote-source{margin-top:20px;font-size:14px;color:var(--brand-300)}
  .quote-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12)}
  .quote-stats .num{font-size:28px;font-weight:700;color:#fff;line-height:1.1}
  .quote-stats .lbl{font-size:13px;color:var(--brand-300);margin-top:6px}
  @media (min-width:1024px){
    .quote-band{padding:56px;display:grid;grid-template-columns:1.25fr .75fr;gap:56px;align-items:center}
    .quote-mark{font-size:52px}
    .quote-text{font-size:19px}
    .quote-stats{grid-template-columns:1fr;gap:22px;margin-top:0;padding-top:0;border-top:0;border-left:1px solid rgba(255,255,255,.12);padding-left:40px}
    .quote-stats .num{font-size:34px}
  }

  /* ---------- FAQ ---------- */
  .faq-list{max-width:860px;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:20px;min-height:56px;padding:16px 0;font-size:16px;font-weight:600;color:var(--brand-900)}
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--brand-700)}
  .faq-icon{position:relative;flex:0 0 20px;width:20px;height:20px}
  .faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-700);border-radius:2px}
  .faq-icon::before{left:0;top:9px;width:20px;height:2px}
  .faq-icon::after{left:9px;top:0;width:2px;height:20px;transition:transform .2s ease}
  .faq-item[open] .faq-icon::after{transform:scaleY(0)}
  .faq-answer{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:760px}

  /* ---------- CTA 横幅 ---------- */
  .cta-band{background:var(--brand-050);border:1px solid var(--brand-300);border-radius:var(--radius-hero);padding:40px 24px;text-align:center}
  .cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:600;color:var(--brand-900);line-height:1.4;margin:0}
  .cta-band p{max-width:660px;margin:16px auto 0;font-size:16px;line-height:1.85;color:var(--text-2)}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:28px}
  @media (min-width:1024px){.cta-band{padding:60px 56px}}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--brand-900);color:#C9DAD5;margin-top:var(--section-y);padding-top:56px}
  .footer-main{display:grid;gap:32px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12)}
  .footer-brand .logo-text{color:#fff}
  .site-footer .logo-mark{background:rgba(255,255,255,.06);border-color:rgba(143,199,188,.35)}
  .footer-brand p{font-size:14px;line-height:1.85;color:#A9C2BC;margin:16px 0 0;max-width:330px}
  .footer-col h4{font-size:15px;font-weight:600;color:#fff;margin:0 0 16px}
  .footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
  .footer-col li{font-size:14px;line-height:1.7}
  .footer-col a{color:#C9DAD5}
  .footer-col a:hover{color:#fff;text-decoration:none}
  .footer-col span{color:#C9DAD5}
  .footer-bottom{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;padding:20px 0 28px;font-size:13px;color:var(--brand-300)}
  @media (min-width:640px){.footer-main{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.footer-main{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}

  /* ---------- 返回顶部 ---------- */
  .to-top{position:fixed;right:20px;bottom:24px;width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--brand-900);box-shadow:var(--shadow-2);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .22s ease,transform .22s ease,visibility .22s ease;z-index:70}
  .to-top.show{opacity:1;visibility:visible;transform:none}
  .to-top:hover{background:var(--surface-2)}

  /* ---------- 移动端导航 ---------- */
  @media (max-width:1023px){
    .nav-cta .btn{display:none}
    .nav-toggle{display:inline-flex}
    .nav-links{
      position:fixed;left:0;right:0;top:104px;bottom:0;z-index:75;
      display:none;flex-direction:column;align-items:stretch;gap:0;
      background:var(--surface);overflow-y:auto;padding:0;
      border-top:1px solid var(--line);
    }
    .mainnav.open .nav-links{display:flex}
    .nav-links a{height:52px;justify-content:space-between;padding:0 24px;font-size:16px;color:var(--brand-900);border-bottom:1px solid var(--line);border-radius:0}
    .nav-links a::after{content:"›";font-size:20px;color:var(--brand-300);line-height:1}
    .nav-links a.active{font-weight:600;color:var(--brand-900);background:var(--brand-050)}
    .nav-links a.active::after{position:static;width:auto;height:auto;background:none;color:var(--accent)}
    .nav-links a:hover{background:var(--brand-050)}
    .drawer-cta{display:block;padding:24px}
    .drawer-cta .btn{width:100%}
  }
  @media (min-width:1024px){
    .drawer-cta{display:none}
  }
  @media (max-width:519px){
    .scene-card{flex-direction:column}
    .scene-icon{flex:0 0 auto;width:100%;height:120px}
    .quote-stats{grid-template-columns:1fr 1fr}
  }

/* roulang page: category4 */
:root{
  --brand-900:#0F3A34;
  --brand-700:#17695C;
  --brand-300:#8FC7BC;
  --brand-050:#EDF4F1;
  --accent:#D2603A;
  --accent-dark:#B84E2C;
  --bg:#FAF8F4;
  --surface:#FFFFFF;
  --surface-2:#F1EDE6;
  --ink:#16211F;
  --ink-2:#4A5854;
  --ink-3:#7C8A85;
  --line:#E5E0D7;
  --ok:#2E7D5B;
  --warn:#C9862B;
  --err:#B4432F;
  --radius-btn:10px;
  --radius-card:16px;
  --radius-lg:24px;
  --shadow-sm:0 1px 2px rgba(15,58,52,.06);
  --shadow-md:0 10px 28px -14px rgba(15,58,52,.22);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter","SF Pro Text",system-ui,sans-serif;
}
*,*::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:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .18s ease,text-decoration-color .18s ease;}
a:hover{color:var(--brand-900);text-decoration:underline;text-underline-offset:3px;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.container{max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ============ 顶部信息条 ============ */
.site-header{position:relative;z-index:60;}
.topbar{background:var(--brand-900);color:var(--brand-050);font-size:13px;}
.topbar-inner{display:flex;align-items:center;gap:20px;height:36px;}
.topbar-domain{font-family:var(--font-num);letter-spacing:.4px;color:#A8C7C0;}
.topbar-tip{color:var(--brand-050);opacity:.92;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:18px;white-space:nowrap;}
.topbar-actions a{color:#FFFFFF;border-bottom:1px solid rgba(255,255,255,.35);padding-bottom:1px;}
.topbar-actions a:hover{color:#FFFFFF;text-decoration:none;border-bottom-color:#FFFFFF;}
.topbar-phone{font-family:var(--font-num);color:#A8C7C0;}
@media (max-width:900px){
  .topbar-domain{display:none;}
  .topbar-tip{font-size:12px;}
}
@media (max-width:640px){
  .topbar-phone{display:none;}
  .topbar-tip{max-width:58%;}
}

/* ============ 主导航 ============ */
.mainnav{
  background:rgba(250,248,244,.96);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:50;
  transition:box-shadow .2s ease;
}
.mainnav.is-scrolled{box-shadow:var(--shadow-md);}
.mainnav-inner{display:flex;align-items:center;gap:24px;height:68px;}
.logo{display:flex;align-items:center;gap:10px;color:var(--brand-900);}
.logo:hover{text-decoration:none;color:var(--brand-900);}
.logo-mark{
  width:38px;height:38px;border-radius:11px;background:var(--brand-050);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.logo-text{font-size:19px;font-weight:700;letter-spacing:0;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-links a{
  display:inline-flex;align-items:center;
  padding:0 14px;height:68px;line-height:68px;
  color:var(--ink-2);font-size:15px;font-weight:500;
  border-bottom:2px solid transparent;
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.nav-links a:hover{color:var(--brand-900);text-decoration:none;background:var(--brand-050);}
.nav-links a.active{color:var(--brand-900);font-weight:600;border-bottom-color:var(--accent);}
.nav-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);color:var(--brand-900);align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{background:var(--surface-2);}
@media (max-width:1023px){
  .nav-links{
    position:fixed;left:0;right:0;top:104px;bottom:0;
    background:#FFFFFF;flex-direction:column;align-items:stretch;gap:0;
    padding:8px 20px 28px;margin-left:0;
    border-top:1px solid var(--line);
    overflow-y:auto;
    transform:translateY(-8px);opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .2s ease,transform .2s ease,visibility .2s;
  }
  .nav-links.open{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0);}
  .nav-links a{
    height:52px;line-height:52px;padding:0 4px;font-size:16px;
    border-bottom:1px solid var(--line);
    border-left:2px solid transparent;
  }
  .nav-links a:hover{background:transparent;}
  .nav-links a.active{border-bottom-color:var(--line);border-left-color:var(--accent);padding-left:12px;background:var(--brand-050);}
  .nav-toggle{display:inline-flex;}
  .nav-cta .btn{display:none;}
}
@media (max-width:640px){
  .mainnav-inner{gap:12px;}
  .logo-text{font-size:17px;}
  .nav-links{top:96px;}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow-md);}
.btn:active{transform:translateY(0);box-shadow:none;}
.btn-primary{background:var(--brand-700);color:#FFFFFF;}
.btn-primary:hover{background:var(--brand-900);color:#FFFFFF;}
.btn-secondary{background:var(--surface);color:var(--brand-900);border-color:var(--brand-900);}
.btn-secondary:hover{background:var(--surface-2);color:var(--brand-900);}
.btn-accent{background:var(--accent);color:#FFFFFF;}
.btn-accent:hover{background:var(--accent-dark);color:#FFFFFF;}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 面包屑 ============ */
.breadcrumb{
  font-size:13px;color:var(--ink-3);padding:20px 0 0;
  display:flex;flex-wrap:wrap;gap:6px;align-items:center;
}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .sep{color:#C4BDB1;}

/* ============ 通用板块 ============ */
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:92px 0;}}
.section-head{max-width:720px;margin-bottom:32px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-700);
  background:var(--brand-050);border-radius:999px;padding:5px 14px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}
h2.h-section{font-size:clamp(23px,2.6vw,31px);line-height:1.35;font-weight:600;color:var(--brand-900);}
.section-head p{margin-top:14px;color:var(--ink-2);font-size:16px;}
.section-alt{background:var(--brand-050);}
.section-deep{background:var(--brand-900);color:var(--brand-050);}
.section-deep h2.h-section{color:#FFFFFF;}
.section-deep .section-head p{color:#C9DAD5;}

/* ============ Hero ============ */
.hero{padding:32px 0 56px;}
@media (min-width:1024px){.hero{padding:40px 0 88px;}}
.hero-grid{display:grid;gap:32px;align-items:center;}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:1fr 1fr;gap:48px;}
}
.hero h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.25;font-weight:700;color:var(--brand-900);
  margin-bottom:18px;
}
.hero h1 .hl{color:var(--brand-700);}
.hero-sub{font-size:16px;color:var(--ink-2);max-width:600px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--brand-700);background:var(--brand-050);
  border:1px solid var(--brand-300);border-radius:999px;padding:5px 12px;
}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;height:240px;object-fit:cover;border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);border:1px solid var(--line);
}
@media (min-width:1024px){.hero-figure img{height:420px;}}
.hero-badge{
  position:absolute;left:16px;top:16px;
  background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:999px;
  padding:7px 14px;font-size:13px;font-weight:600;color:var(--brand-900);
  display:inline-flex;align-items:center;gap:8px;box-shadow:var(--shadow-sm);
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--ok);}
.hero-note{
  margin-top:18px;font-size:13px;color:var(--ink-3);
}

/* ============ 数据条 ============ */
.stats{display:grid;gap:24px;}
@media (min-width:640px){.stats{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.stats{grid-template-columns:repeat(4,1fr);gap:32px;}}
.stat{border-left:2px solid var(--brand-300);padding-left:18px;}
.section-deep .stat{border-left-color:rgba(143,199,188,.55);}
.stat b{display:block;font-family:var(--font-num);font-size:clamp(28px,3.4vw,38px);font-weight:700;line-height:1.1;color:var(--brand-900);}
.section-deep .stat b{color:#FFFFFF;}
.stat span{display:block;font-size:13px;color:var(--ink-3);margin-top:8px;line-height:1.7;}
.section-deep .stat span{color:#A8C7C0;}

/* ============ 价格卡 ============ */
.plans{display:grid;gap:24px;align-items:start;}
@media (min-width:640px){.plans{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.plans{grid-template-columns:repeat(3,1fr);gap:28px;}}
.plan{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 24px;display:flex;flex-direction:column;position:relative;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.plan:hover{border-color:var(--brand-300);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.plan--featured{
  border-top:3px solid var(--accent);
  box-shadow:var(--shadow-md);
}
@media (min-width:1024px){
  .plan--featured{transform:scale(1.02);}
  .plan--featured:hover{transform:scale(1.02) translateY(-2px);}
}
.plan-tag{
  position:absolute;right:20px;top:-13px;
  background:var(--accent);color:#FFFFFF;font-size:12px;font-weight:600;
  border-radius:999px;padding:4px 12px;
}
.plan h3{font-size:20px;font-weight:600;color:var(--brand-900);}
.plan-desc{font-size:14px;color:var(--ink-2);margin-top:8px;min-height:44px;}
.plan-price{
  margin:18px 0 6px;font-family:var(--font-num);font-size:32px;font-weight:700;color:var(--brand-900);
  display:flex;align-items:baseline;gap:6px;
}
.plan-price small{font-size:14px;font-weight:500;color:var(--ink-3);font-family:var(--font-cn);}
.plan-cycle{font-size:13px;color:var(--ink-3);}
.plan-list{margin:22px 0 26px;display:grid;gap:12px;}
.plan-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.7;}
.plan-list svg{flex:0 0 auto;margin-top:5px;}
.plan .btn{margin-top:auto;}
.plan-note{margin-top:12px;font-size:12px;color:var(--ink-3);line-height:1.7;}

/* ============ 对比表 ============ */
.table-wrap{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface);box-shadow:var(--shadow-sm);
}
table{width:100%;border-collapse:collapse;min-width:720px;}
thead th{
  text-align:left;font-size:14px;font-weight:600;color:var(--brand-900);
  background:var(--brand-050);padding:16px 20px;border-bottom:1px solid var(--line);
  white-space:nowrap;
}
thead th.is-featured{color:var(--accent);}
tbody td{
  padding:15px 20px;font-size:14px;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
tbody tr:last-child td{border-bottom:none;}
tbody tr:hover{background:#FCFBF8;}
tbody td:first-child{color:var(--ink);font-weight:500;white-space:nowrap;}
tbody td.is-featured{background:rgba(210,96,58,.05);color:var(--brand-900);font-weight:500;}
.table-hint{margin-top:14px;font-size:13px;color:var(--ink-3);}

/* ============ 流程步骤 ============ */
.steps{display:grid;gap:20px;}
@media (min-width:768px){.steps{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.steps{grid-template-columns:repeat(4,1fr);}}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 22px;position:relative;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.step:hover{border-color:var(--brand-300);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.step-no{
  font-family:var(--font-num);font-size:13px;font-weight:700;color:#FFFFFF;
  background:var(--brand-700);width:30px;height:30px;border-radius:9px;
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.step h3{font-size:17px;font-weight:600;color:var(--brand-900);margin-bottom:8px;}
.step p{font-size:14px;color:var(--ink-2);line-height:1.8;}
.step .step-time{
  margin-top:14px;font-size:13px;color:var(--brand-700);background:var(--brand-050);
  border-radius:999px;padding:4px 12px;display:inline-block;
}

/* ============ 权益说明块 ============ */
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 26px;box-shadow:var(--shadow-sm);
}
.panel-grid{display:grid;gap:24px;}
@media (min-width:1024px){.panel-grid{grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;}}
.panel h3{font-size:20px;font-weight:600;color:var(--brand-900);margin-bottom:12px;}
.panel p{font-size:15px;color:var(--ink-2);}
.panel ul{display:grid;gap:10px;margin-top:18px;}
.panel ul li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);}
.panel ul li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-300);margin-top:10px;flex:0 0 auto;}
.panel-figure img{width:100%;height:260px;object-fit:cover;border-radius:var(--radius-card);border:1px solid var(--line);}

/* ============ FAQ ============ */
.faq{max-width:860px;margin:0 auto;}
.faq details{border-bottom:1px solid var(--line);}
.faq details:first-of-type{border-top:1px solid var(--line);}
.faq summary{
  list-style:none;cursor:pointer;
  min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 4px;font-size:16px;font-weight:500;color:var(--brand-900);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary .sign{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  border:1px solid var(--brand-300);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-size:15px;line-height:1;
  transition:background .18s ease,color .18s ease;
}
.faq summary:hover .sign{background:var(--brand-050);}
.faq details[open] summary .sign{background:var(--brand-700);color:#FFFFFF;border-color:var(--brand-700);}
.faq .answer{padding:0 4px 22px;font-size:15px;color:var(--ink-2);max-width:760px;}

/* ============ CTA ============ */
.cta-section{padding:56px 0;}
@media (min-width:1024px){.cta-section{padding:88px 0;}}
.cta-box{
  background:var(--brand-900);border-radius:var(--radius-lg);
  padding:40px 26px;color:#EDF4F1;position:relative;overflow:hidden;
}
@media (min-width:1024px){.cta-box{padding:56px 52px;}}
.cta-box::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(143,199,188,.28),transparent 68%);
  pointer-events:none;
}
.cta-grid{display:grid;gap:32px;position:relative;z-index:1;}
@media (min-width:1024px){.cta-grid{grid-template-columns:1fr 1fr;gap:56px;align-items:center;}}
.cta-box h2{font-size:clamp(23px,2.8vw,32px);line-height:1.35;font-weight:600;color:#FFFFFF;}
.cta-box p{margin-top:14px;color:#C9DAD5;font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.cta-box .btn-secondary{background:transparent;color:#FFFFFF;border-color:rgba(255,255,255,.5);}
.cta-box .btn-secondary:hover{background:rgba(255,255,255,.1);color:#FFFFFF;}

/* ============ 表单 ============ */
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-sm);
}
.form-card h3{font-size:18px;font-weight:600;color:var(--brand-900);margin-bottom:6px;}
.form-card .form-tip{font-size:13px;color:var(--ink-3);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:7px;}
.field input,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#FFFDFA;padding:0 14px;height:44px;font-size:14px;color:var(--ink);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-700);
  box-shadow:0 0 0 3px rgba(23,105,92,.14);
}
.form-note{font-size:12px;color:var(--ink-3);margin-top:12px;line-height:1.7;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--brand-900);color:#C9DAD5;margin-top:0;
  padding:56px 0 28px;font-size:14px;
}
.footer-main{display:grid;gap:32px;}
@media (min-width:640px){.footer-main{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-main{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand .logo-text{color:#FFFFFF;}
.footer-brand p{margin-top:16px;color:#A8C7C0;font-size:13px;line-height:1.8;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:600;color:#FFFFFF;margin-bottom:16px;letter-spacing:0;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a,.footer-col span{color:#C9DAD5;font-size:13px;}
.footer-col a:hover{color:#FFFFFF;text-decoration:none;}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:#9FBDB6;
}
@media (max-width:640px){
  .footer-main{grid-template-columns:1fr 1fr;gap:26px;}
  .footer-brand{grid-column:1 / -1;}
  .site-footer{padding-top:44px;}
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:20px;bottom:20px;width:44px;height:44px;border-radius:12px;
  background:var(--surface);border:1px solid var(--line);color:var(--brand-900);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
  z-index:70;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-050);}

/* 装饰云弧 */
.arc-divider{height:1px;background:linear-gradient(90deg,transparent,var(--brand-300),transparent);opacity:.5;}