/* roulang page: index */
:root{
  --c-primary:#0E5A4E;
  --c-primary-600:#0A473E;
  --c-primary-050:#E8F1EF;
  --c-accent:#FF6B35;
  --c-accent-600:#E4571F;
  --c-accent-050:#FFF0EA;
  --c-ink:#10151A;
  --c-body:#22302F;
  --c-gray:#5A6B6B;
  --c-line:#E3E7E5;
  --c-surface:#F4F6F5;
  --c-bg:#FAFAF8;
  --c-dark:#0E1512;
  --c-success:#1FA97A;
  --c-alert:#D9453B;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --r-pill:999px;
  --sh-hover:0 10px 24px -12px rgba(16,21,26,.18);
  --tr:180ms ease;
  --maxw:1200px;
  --pad-x:32px;
  --sec-y:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--c-bg);
  color:var(--c-body);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;}
a:hover{color:var(--c-accent);}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:0;}
h1{font-size:clamp(34px,4.4vw,52px);line-height:1.18;}
h2{font-size:clamp(26px,3vw,34px);line-height:1.3;}
h3{font-size:22px;line-height:1.4;font-weight:600;}
h4{font-size:18px;line-height:1.5;font-weight:600;}
p{margin:0 0 1.3em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding-left:var(--pad-x);padding-right:var(--pad-x);}
.section{padding:var(--sec-y) 0;}
.section--tight{padding:64px 0;}
.section--surface{background:var(--c-surface);}
.section--dark{background:var(--c-dark);color:rgba(255,255,255,.75);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{margin-bottom:16px;}
.section-head p{color:var(--c-gray);margin-bottom:0;font-size:16px;line-height:1.85;}
.eyebrow{display:inline-block;font-size:13px;font-weight:500;letter-spacing:.08em;color:var(--c-primary);background:var(--c-primary-050);border-radius:var(--r-pill);padding:5px 12px;margin-bottom:18px;}
.num{font-variant-numeric:tabular-nums;}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;line-height:1;padding:15px 24px;border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;text-decoration:none;transition:background var(--tr),color var(--tr),border-color var(--tr),transform var(--tr),box-shadow var(--tr);}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-600);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px -10px rgba(14,90,78,.65);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:var(--c-accent-600);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px -10px rgba(255,107,53,.7);}
.btn-accent:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-050);color:var(--c-primary);}
.btn-text{background:none;border:none;padding:0;color:var(--c-primary);font-size:15px;font-weight:600;text-decoration:underline;text-underline-offset:3px;}
.btn-text:hover{color:var(--c-accent);}
.btn-sm{padding:11px 18px;font-size:14px;}

/* 标签 */
.tag{display:inline-block;font-size:13px;line-height:1.4;font-weight:500;padding:4px 11px;border-radius:var(--r-pill);background:var(--c-primary-050);color:var(--c-primary);}
.tag-accent{background:var(--c-accent-050);color:#C4451A;}

/* 头部导航 */
.site-header{position:sticky;top:0;z-index:80;background:rgba(250,250,248,.88);backdrop-filter:saturate(180%) blur(10px);-webkit-backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid transparent;transition:border-color .2s ease,background .2s ease;}
.site-header.is-scrolled{border-bottom-color:var(--c-line);background:rgba(250,250,248,.96);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
.brand{display:flex;flex-direction:column;justify-content:center;text-decoration:none;color:var(--c-ink);line-height:1.1;}
.brand-main{font-size:19px;font-weight:700;}
.brand-sub{font-size:12px;font-weight:500;color:var(--c-gray);margin-top:3px;letter-spacing:.04em;}
.main-nav{display:flex;align-items:center;gap:30px;}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--c-gray);padding:6px 0;transition:color var(--tr);}
.nav-link:hover{color:var(--c-ink);}
.nav-link.is-active{color:var(--c-ink);}
.nav-link.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--c-primary);}
.header-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{display:none;width:42px;height:42px;align-items:center;justify-content:center;background:transparent;border:1px solid var(--c-line);border-radius:var(--r-btn);color:var(--c-ink);font-size:16px;cursor:pointer;transition:background var(--tr),border-color var(--tr);}
.nav-toggle:hover{background:var(--c-surface);border-color:#D3DAD8;}
.nav-drawer{display:none;}

/* Hero */
.hero{position:relative;color:#fff;background-image:linear-gradient(180deg,rgba(9,22,20,.78) 0%,rgba(9,22,20,.62) 42%,rgba(14,21,18,.9) 100%),url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;padding:120px 0 0;}
.hero-content{max-width:640px;padding-bottom:96px;}
.hero .eyebrow{background:rgba(255,255,255,.12);color:#DCE9E5;}
.hero h1{color:#fff;margin:0 0 20px;}
.hero-sub{color:rgba(255,255,255,.82);font-size:17px;line-height:1.9;margin-bottom:32px;max-width:560px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;}
.hero .btn-ghost{border-color:rgba(255,255,255,.55);color:#fff;}
.hero .btn-ghost:hover{background:#fff;color:var(--c-primary);border-color:#fff;}
.hero-trust{border-top:1px solid rgba(255,255,255,.18);background:rgba(8,18,16,.42);}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.trust-item{padding:22px 24px 22px 0;font-size:14px;color:rgba(255,255,255,.82);display:flex;align-items:center;gap:10px;border-right:1px solid rgba(255,255,255,.14);}
.trust-item:last-child{border-right:none;}
.trust-item i{color:#7FD3BE;font-size:14px;}

/* 价值主张 */
.value-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;}
.value-copy h2{margin-bottom:20px;}
.value-copy p{color:var(--c-gray);font-size:16px;}
.value-list{margin-top:28px;display:grid;gap:14px;}
.value-list li{position:relative;padding-left:22px;font-size:15px;color:var(--c-body);}
.value-list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;background:var(--c-primary);}
.value-media{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line);background:var(--c-surface);}
.value-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.value-media figcaption{position:absolute;left:0;right:0;bottom:0;padding:16px 20px;font-size:13px;color:rgba(255,255,255,.9);background:linear-gradient(180deg,rgba(14,21,18,0),rgba(14,21,18,.82));}

/* 功能分组 不对称网格 */
.feature-grid{display:grid;grid-template-columns:1.12fr 1fr;gap:24px;align-items:stretch;}
.feature-col{display:grid;gap:24px;}
.f-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:32px;position:relative;transition:box-shadow var(--tr),transform var(--tr);}
.f-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);}
.f-card--lead{display:flex;flex-direction:column;justify-content:space-between;background:linear-gradient(180deg,#FFFFFF 0%,#F7FAF9 100%);}
.f-card h3{margin-bottom:12px;}
.f-card .f-desc{color:var(--c-gray);font-size:15px;line-height:1.85;margin-bottom:22px;}
.f-index{position:absolute;top:22px;right:26px;font-size:34px;font-weight:700;color:#EDF1EF;line-height:1;font-variant-numeric:tabular-nums;}
.f-list{display:grid;gap:12px;}
.f-list li{position:relative;padding-left:20px;font-size:15px;line-height:1.75;color:var(--c-body);}
.f-list li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border:1px solid var(--c-primary);border-radius:2px;}
.f-card--lead .f-list li::before{background:var(--c-primary);border-color:var(--c-primary);}

/* 使用场景 错位图文条 */
.scene-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:36px 0;border-top:1px solid var(--c-line);}
.scene-row:last-child{border-bottom:1px solid var(--c-line);}
.scene-row.reverse .scene-media{order:-1;}
.scene-media{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line);background:var(--c-surface);}
.scene-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.scene-copy h3{margin:14px 0 12px;}
.scene-copy p{color:var(--c-gray);font-size:15px;margin-bottom:8px;}
.scene-copy .btn-text{display:inline-block;margin-top:8px;}

/* 案例 */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.case-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;transition:box-shadow var(--tr),transform var(--tr);}
.case-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);}
.case-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--c-surface);}
.case-body{padding:24px;display:flex;flex-direction:column;gap:12px;}
.case-body h3{font-size:19px;}
.case-body p{font-size:15px;color:var(--c-gray);margin:0;line-height:1.8;}
.case-metric{display:flex;align-items:baseline;gap:10px;padding-top:16px;border-top:1px solid var(--c-line);}
.case-metric strong{font-size:30px;font-weight:700;color:var(--c-primary);line-height:1;font-variant-numeric:tabular-nums;}
.case-metric span{font-size:13px;color:var(--c-gray);}

/* 价格方案 */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.plan{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:32px 28px;transition:box-shadow var(--tr),transform var(--tr);}
.plan:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);}
.plan--featured{border-color:var(--c-primary);box-shadow:0 14px 34px -22px rgba(14,90,78,.55);}
.plan-flag{position:absolute;top:-13px;left:28px;background:var(--c-accent);color:#fff;font-size:13px;font-weight:500;padding:4px 12px;border-radius:var(--r-pill);}
.plan h3{margin-bottom:8px;}
.plan .plan-note{font-size:14px;color:var(--c-gray);margin-bottom:22px;line-height:1.7;}
.plan-price{display:flex;align-items:baseline;gap:6px;padding-bottom:22px;border-bottom:1px solid var(--c-line);}
.plan-price strong{font-size:34px;font-weight:700;color:var(--c-ink);line-height:1;font-variant-numeric:tabular-nums;}
.plan-price span{font-size:14px;color:var(--c-gray);}
.plan-benefits{display:grid;gap:0;margin:22px 0 26px;}
.plan-benefits li{font-size:15px;color:var(--c-body);padding:11px 0;border-bottom:1px solid var(--c-line);display:flex;gap:10px;align-items:flex-start;}
.plan-benefits li:last-child{border-bottom:none;}
.plan-benefits i{color:var(--c-success);font-size:13px;margin-top:7px;}
.plan .btn{margin-top:auto;width:100%;}

/* 资讯卡片 */
.cms-grid{margin-top:8px;}
.post-card{display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;text-decoration:none;color:inherit;transition:box-shadow var(--tr),transform var(--tr),border-color var(--tr);}
.post-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);border-color:#D6DEDB;color:inherit;}
.post-media{background:var(--c-surface);border-bottom:1px solid var(--c-line);}
.post-media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.post-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.post-title{font-size:18px;font-weight:600;line-height:1.5;color:var(--c-ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-excerpt{font-size:15px;color:var(--c-gray);line-height:1.8;margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--c-gray);}
.list-empty{text-align:center;padding:64px 24px;border:1px dashed var(--c-line);border-radius:var(--r-card);background:#fff;}
.list-empty i{font-size:26px;color:#B9C6C3;display:block;margin-bottom:14px;}
.list-empty p{color:var(--c-gray);margin-bottom:12px;}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.head-row .section-head{margin-bottom:0;}

/* CTA 带 */
.cta-band{background:var(--c-dark);padding:var(--sec-y) 0;}
.cta-box{border:1px solid rgba(255,255,255,.16);border-radius:var(--r-card);padding:48px;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;}
.cta-box h2{color:#fff;font-size:clamp(24px,2.6vw,30px);margin-bottom:10px;}
.cta-box p{color:rgba(255,255,255,.72);margin:0;font-size:16px;max-width:620px;}

/* FAQ */
.faq-wrap{max-width:860px;}
.accordion.cus-accordion{border:none;background:transparent;}
.cus-accordion .accordion-item{border:none;border-bottom:1px solid var(--c-line);}
.cus-accordion .accordion-item:first-child{border-top:1px solid var(--c-line);}
.cus-accordion .accordion-title{display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:17px;font-weight:600;color:var(--c-ink);background:transparent;border:none;padding:22px 0;}
.cus-accordion .accordion-title:hover{background:transparent;color:var(--c-primary);}
.cus-accordion .accordion-title::before{display:none;}
.cus-accordion .accordion-title::after{content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;color:var(--c-primary);transition:transform .2s ease;}
.cus-accordion .accordion-item.is-active .accordion-title::after{transform:rotate(45deg);}
.cus-accordion .accordion-content{padding:0 0 24px;border:none;background:transparent;color:var(--c-gray);font-size:16px;line-height:1.85;}
.cus-accordion .accordion-content p:last-child{margin-bottom:0;}

/* 页脚 */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.7);padding:72px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px;}
.footer-brand .brand-main{color:#fff;font-size:20px;}
.footer-brand .brand-sub{color:rgba(255,255,255,.6);}
.footer-brand p{margin:18px 0 0;line-height:1.85;color:rgba(255,255,255,.62);font-size:14px;max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;}
.footer-links{display:grid;gap:12px;}
.footer-links a{color:rgba(255,255,255,.7);font-size:14px;transition:color var(--tr);}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-contact{display:grid;gap:12px;color:rgba(255,255,255,.7);}
.footer-contact span{display:block;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55);}
.footer-bottom a{color:rgba(255,255,255,.55);}
.footer-bottom a:hover{color:#fff;}

/* 响应式 */
@media (max-width:1024px){
  :root{--pad-x:24px;--sec-y:72px;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-drawer{display:block;max-height:0;overflow:hidden;transition:max-height .28s ease;background:#fff;border-top:1px solid var(--c-line);}
  .nav-drawer.is-open{max-height:460px;}
  .nav-drawer a{display:block;height:52px;line-height:52px;padding:0 24px;font-size:16px;color:var(--c-ink);border-bottom:1px solid var(--c-line);}
  .nav-drawer a.is-active{border-left:3px solid var(--c-primary);background:var(--c-surface);padding-left:21px;}
  .value-grid{grid-template-columns:1fr;gap:36px;}
  .feature-grid{grid-template-columns:1fr;}
  .scene-row{grid-template-columns:1fr;gap:24px;padding:32px 0;}
  .scene-row.reverse .scene-media{order:0;}
  .case-grid{grid-template-columns:1fr 1fr;}
  .plan-grid{grid-template-columns:1fr;}
  .cta-box{padding:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:640px){
  :root{--pad-x:20px;--sec-y:56px;}
  body{font-size:16px;}
  .header-inner{height:64px;}
  .header-actions .btn{display:none;}
  .hero{padding-top:88px;}
  .hero-content{padding-bottom:64px;}
  .hero-cta{flex-direction:column;align-items:stretch;}
  .hero-cta .btn{width:100%;}
  .trust-grid{grid-template-columns:1fr 1fr;}
  .trust-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.14);padding:16px 12px 16px 0;}
  .trust-item:nth-child(odd){border-right:1px solid rgba(255,255,255,.14);}
  .trust-item:nth-last-child(-n+2){border-bottom:none;}
  .case-grid{grid-template-columns:1fr;}
  .section-head{margin-bottom:28px;}
  .f-card{padding:24px;}
  .cta-box{padding:28px;}
  .cta-box .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --brand:#0E5A4E;
  --brand-deep:#0A4438;
  --accent:#FF6B35;
  --ink:#10151A;
  --muted:#5A6B6B;
  --line:#E3E7E5;
  --soft:#F4F6F5;
  --bg:#FAFAF8;
  --dark:#0E1512;
  --success:#1FA97A;
  --alert:#D9453B;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:8px;
  --shadow-hover:0 10px 24px -12px rgba(16,21,26,.18);
  --shadow-soft:0 2px 10px -6px rgba(16,21,26,.16);
  --space-section:96px;
  --space-block:40px;
  --font: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;}
a:hover{color:var(--brand-deep);}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:700;}
p{margin:0 0 1.3em;}
ul,ol{margin:0;}
figure{margin:0;}
::selection{background:rgba(14,90,78,.16);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
.narrow{max-width:760px;}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(250,250,248,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .22s ease, background .22s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(250,250,248,.98);}
.header-inner{
  height:68px;
  display:flex;
  align-items:center;
  gap:28px;
}
.brand{
  display:flex;
  flex-direction:column;
  justify-content:center;
  line-height:1.1;
  flex:0 0 auto;
}
.brand-main{font-size:19px;font-weight:700;color:var(--ink);letter-spacing:.02em;}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.16em;margin-top:2px;}
.main-nav{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--muted);
  padding:6px 1px;
  transition:color .18s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--ink);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-3px;
  height:2px;border-radius:2px;
  background:var(--brand);
}
.header-cta{flex:0 0 auto;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  padding:0;
  cursor:pointer;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);transition:transform .2s ease,opacity .2s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  padding:13px 24px;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  text-align:center;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px -12px rgba(14,90,78,.65);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{border-color:var(--brand);color:var(--brand);background:transparent;}
.btn-ghost:hover{background:rgba(14,90,78,.08);color:var(--brand-deep);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#EA5A21;color:#fff;transform:translateY(-1px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--brand);
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:1px;
}
.btn-link:hover{color:var(--accent);}
.btn[disabled],.btn.is-disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- Tags / Badges ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:13px;
  line-height:1.4;
  font-weight:500;
  background:rgba(14,90,78,.08);
  color:var(--brand);
}
.tag-accent{background:rgba(255,107,53,.12);color:#C4491C;}
.tag-plain{background:var(--soft);color:var(--muted);}

/* ---------- Article hero ---------- */
.article-hero{
  position:relative;
  padding:56px 0 48px;
  background-image:linear-gradient(120deg, rgba(14,21,18,.95) 0%, rgba(14,90,78,.88) 100%), url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  color:#fff;
  overflow:hidden;
}
.article-hero h1,.article-hero p{color:#fff;}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:9px;
  font-size:14px;
  line-height:1.7;
  color:rgba(255,255,255,.66);
  margin-bottom:22px;
}
.breadcrumb a{color:rgba(255,255,255,.8);text-decoration:none;}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:rgba(255,255,255,.35);}
.breadcrumb .current{color:#FFB38F;font-weight:600;max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{
  font-size:clamp(30px,3.6vw,46px);
  line-height:1.24;
  font-weight:700;
  max-width:900px;
  letter-spacing:0;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px;
  margin-top:26px;
  font-size:14px;
  color:rgba(255,255,255,.72);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px;}
.article-meta .meta-item i{font-size:12px;color:#FFB38F;}
.article-meta .divider{width:1px;height:14px;background:rgba(255,255,255,.22);}
.article-meta .meta-tag{
  padding:3px 11px;
  border-radius:999px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.18);
  color:#fff;
  font-size:13px;
}

/* ---------- Section base ---------- */
.section{padding:var(--space-section) 0;}
.section-soft{background:var(--soft);}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:var(--space-block);}
.section-head .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.12em;
  color:var(--brand);
  margin-bottom:14px;
}
.section-head .eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);}
.section-head h2{font-size:clamp(26px,3vw,34px);line-height:1.3;}
.section-head p{margin:14px 0 0;max-width:760px;color:var(--muted);font-size:16px;line-height:1.85;}

/* ---------- Article layout ---------- */
.article-shell{padding:56px 0 0;}
.article-layout{margin-left:-16px;margin-right:-16px;}
.article-layout > .cell{padding-left:16px;padding-right:16px;}
.article-main{min-width:0;}
.article-body{
  max-width:760px;
  font-size:17px;
  line-height:1.95;
  color:#26302F;
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  position:relative;
  font-size:clamp(22px,2.2vw,27px);
  line-height:1.4;
  margin:2.4em 0 .8em;
  padding-left:16px;
  font-weight:700;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.34em;
  width:4px;height:.96em;
  border-radius:2px;
  background:var(--brand);
}
.article-body h3{
  font-size:22px;
  line-height:1.45;
  font-weight:600;
  margin:1.9em 0 .7em;
}
.article-body h4{font-size:18px;line-height:1.5;font-weight:600;margin:1.6em 0 .6em;}
.article-body p{margin:0 0 1.3em;}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.4em;}
.article-body li{margin-bottom:.55em;padding-left:.2em;line-height:1.9;}
.article-body li::marker{color:var(--brand);}
.article-body a{
  color:var(--brand);
  text-decoration:underline;
  text-underline-offset:2px;
  text-decoration-thickness:1px;
}
.article-body a:hover{color:var(--accent);}
.article-body strong{font-weight:600;color:var(--ink);}
.article-body blockquote{
  margin:1.6em 0;
  padding:18px 22px;
  background:var(--soft);
  border-left:3px solid var(--brand);
  border-radius:0 10px 10px 0;
  color:#33403E;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;
  height:auto;
  border-radius:var(--radius-img);
  margin:1.6em 0 .6em;
  border:1px solid var(--line);
}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{
  text-align:center;
  font-size:13px;
  color:var(--muted);
  margin-top:8px;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.6em 0;
  font-size:15.5px;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:12px 14px;
  text-align:left;
  vertical-align:top;
}
.article-body th{background:var(--soft);font-weight:600;color:var(--ink);}
.article-body code{
  background:var(--soft);
  padding:2px 6px;
  border-radius:5px;
  font-size:15px;
}

/* ---------- Sidebar ---------- */
.article-side{min-width:0;}
.side-inner{position:sticky;top:96px;}
.side-card{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:#fff;
  padding:22px 22px 18px;
  margin-bottom:20px;
}
.side-title{
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:14px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  gap:8px;
}
.side-title::before{content:"";width:12px;height:1px;background:var(--accent);}
.side-list{list-style:none;margin:0;padding:0;}
.side-list li{border-bottom:1px solid var(--line);}
.side-list li:last-child{border-bottom:0;}
.side-list a{
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding:11px 0;
  font-size:15px;
  color:#33403E;
  line-height:1.7;
  transition:color .16s ease,transform .16s ease;
}
.side-list a:hover{color:var(--brand);transform:translateX(2px);}
.side-list a i{font-size:11px;color:var(--brand);margin-top:9px;flex:0 0 auto;}
.side-post{
  display:block;
  padding:12px 0;
  border-bottom:1px solid var(--line);
  transition:color .16s ease;
}
.side-post:last-child{border-bottom:0;padding-bottom:0;}
.side-post strong{
  display:block;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  line-height:1.6;
  margin-bottom:5px;
}
.side-post:hover strong{color:var(--brand);}
.side-post span{font-size:13px;color:var(--muted);}
.side-back{width:100%;}

/* ---------- Empty state ---------- */
.empty-state{
  max-width:760px;
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  background:#fff;
  padding:56px 32px;
  text-align:center;
}
.empty-state i{font-size:28px;color:var(--brand);}
.empty-state h2{font-size:22px;margin:18px 0 10px;}
.empty-state p{color:var(--muted);font-size:16px;margin-bottom:24px;}

/* ---------- Cards ---------- */
.card-grid{display:grid;gap:24px;grid-template-columns:repeat(3,minmax(0,1fr));}
.card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
  height:100%;
}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#D6DCDA;}
.card-media{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:linear-gradient(135deg,#EEF2F0,#F7F8F7);
  border-bottom:1px solid var(--line);
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1;}
.card-body h3{
  font-size:18px;
  line-height:1.55;
  font-weight:600;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-body h3 a{color:var(--ink);}
.card-body h3 a:hover{color:var(--brand);}
.card-body p{
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
  margin:0 0 18px;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--muted);
}

/* ---------- CTA band ---------- */
.cta-band{padding:0 0 var(--space-section);}
.cta-box{
  background:var(--dark);
  border:1px solid rgba(255,255,255,.12);
  border-radius:18px;
  padding:56px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  color:#fff;
  position:relative;
  overflow:hidden;
}
.cta-box::after{
  content:"";
  position:absolute;
  right:-60px;top:-60px;
  width:260px;height:260px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,107,53,.18),transparent 70%);
}
.cta-box h2{color:#fff;font-size:clamp(24px,2.6vw,30px);line-height:1.35;position:relative;}
.cta-box p{color:rgba(255,255,255,.7);margin:12px 0 0;font-size:16px;line-height:1.8;max-width:620px;position:relative;}
.cta-box .cta-action{flex:0 0 auto;position:relative;}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px;
  padding:22px 0;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  line-height:1.7;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  font-size:20px;
  font-weight:400;
  color:var(--brand);
  line-height:1.2;
  flex:0 0 auto;
  transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"–";transform:rotate(180deg);}
.faq-item .faq-answer{
  padding:0 0 24px;
  font-size:16px;
  line-height:1.9;
  color:var(--muted);
  max-width:760px;
}
.faq-item .faq-answer p:last-child{margin-bottom:0;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--dark);
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand .brand-main{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.5);}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px;margin:0;}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:18px;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  font-size:14px;
  color:rgba(255,255,255,.62);
  text-decoration:none;
  transition:color .16s ease;
  width:fit-content;
}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-contact{display:flex;flex-direction:column;gap:11px;font-size:14px;color:rgba(255,255,255,.62);line-height:1.7;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  :root{--space-section:72px;--space-block:28px;}
  .container{padding-left:24px;padding-right:24px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .article-shell{padding-top:44px;}
  .side-inner{position:static;}
  .article-body,.empty-state{max-width:100%;}
  .nav-toggle{display:flex;}
  .main-nav{
    position:fixed;
    top:68px;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:#fff;
    border-bottom:1px solid var(--line);
    padding:6px 20px 18px;
    transform:translateY(-10px);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
    max-height:calc(100vh - 68px);
    overflow-y:auto;
  }
  .main-nav.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0);}
  .main-nav .nav-link{
    height:52px;
    display:flex;
    align-items:center;
    padding:0 12px;
    border-bottom:1px solid var(--line);
    font-size:16px;
    color:var(--ink);
  }
  .main-nav .nav-link.is-active{
    font-weight:600;
    box-shadow:inset 3px 0 0 var(--brand);
  }
  .main-nav .nav-link.is-active::after{display:none;}
  .header-cta{display:none;}
  .cta-box{flex-direction:column;align-items:flex-start;padding:44px 32px;}
  .cta-box .cta-action{width:100%;}
  .cta-box .cta-action .btn{width:100%;}
}
@media (max-width:768px){
  body{font-size:16.5px;}
  .article-hero{padding:40px 0 36px;}
  .article-title{font-size:clamp(26px,6vw,32px);}
  .article-meta{gap:12px;margin-top:20px;}
  .article-meta .divider{display:none;}
  .card-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
  .article-body table{display:block;overflow-x:auto;}
}
@media (max-width:520px){
  .container{padding-left:20px;padding-right:20px;}
  :root{--space-section:56px;}
  .header-inner{gap:14px;}
  .brand-main{font-size:17px;}
  .brand-sub{font-size:10px;letter-spacing:.12em;}
  .article-shell{padding-top:34px;}
  .article-body{font-size:16.5px;line-height:1.95;}
  .article-body h2{font-size:21px;}
  .article-body h3{font-size:19px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-box{padding:34px 22px;border-radius:14px;}
  .faq-item summary{font-size:16px;padding:18px 0;}
  .empty-state{padding:40px 20px;}
  .side-card{padding:18px 18px 14px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#0E5A4E;
  --c-primary-dark:#0A4438;
  --c-primary-soft:#E8F1EF;
  --c-accent:#FF6B35;
  --c-ink:#10151A;
  --c-body:#5A6B6B;
  --c-text:#42524F;
  --c-line:#E3E7E5;
  --c-surface:#F4F6F5;
  --c-bg:#FAFAF8;
  --c-dark:#0E1512;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --r-pill:999px;
  --sh-hover:0 10px 24px -12px rgba(16,21,26,.18);
  --sp-block:96px;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--c-primary);text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{color:var(--c-ink);font-family:inherit;}
h1{font-size:clamp(34px,4.4vw,52px);line-height:1.18;font-weight:700;}
h2{font-size:clamp(26px,3vw,34px);line-height:1.3;font-weight:700;}
h3{font-size:22px;line-height:1.4;font-weight:600;}
h4{font-size:18px;line-height:1.5;font-weight:600;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
::selection{background:var(--c-primary);color:#fff;}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:0 10px 20px -12px rgba(14,90,78,.85);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary);background:transparent;}
.btn-ghost:hover{background:var(--c-primary-soft);}
.btn-light{background:#fff;color:var(--c-primary);}
.btn-light:hover{background:#EAF3F1;transform:translateY(-1px);}
.btn-outline-light{border-color:rgba(255,255,255,.5);color:#fff;background:transparent;}
.btn-outline-light:hover{background:rgba(255,255,255,.14);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.link-text{
  display:inline-block;
  color:var(--c-primary);
  font-size:15px;
  font-weight:600;
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-thickness:1px;
  transition:color .18s ease;
}
.link-text:hover{color:var(--c-accent);}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  padding:5px 13px;
  border-radius:var(--r-pill);
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:13px;
  font-weight:500;
  line-height:1.4;
}
.tag-accent{background:rgba(255,107,53,.12);color:#C94A18;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(250,250,248,.88);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .22s ease,background-color .22s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--c-line);
  background:rgba(250,250,248,.96);
}
.header-inner{
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{display:flex;flex-direction:column;line-height:1.18;text-decoration:none;}
.brand-main{font-size:18px;font-weight:700;color:var(--c-ink);letter-spacing:.02em;}
.brand-sub{font-size:12px;color:var(--c-body);letter-spacing:.08em;}
.main-nav{display:flex;align-items:center;gap:30px;}
.nav-link{
  position:relative;
  padding:6px 0;
  font-size:15px;
  color:var(--c-body);
  transition:color .18s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--c-ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-ink);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:14px;}
.menu-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:42px;height:42px;
  padding:0 10px;
  background:transparent;
  border:1px solid var(--c-line);
  border-radius:10px;
  cursor:pointer;
  transition:border-color .18s ease,background-color .18s ease;
}
.menu-toggle:hover{border-color:var(--c-primary);background:var(--c-primary-soft);}
.menu-toggle span{display:block;height:1.5px;width:100%;background:var(--c-ink);border-radius:2px;transition:transform .22s ease,opacity .22s ease;}
.menu-toggle.is-open span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.menu-toggle.is-open span:nth-child(2){opacity:0;}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

.nav-drawer{
  position:absolute;
  top:100%;left:0;right:0;
  display:none;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  box-shadow:0 18px 30px -24px rgba(16,21,26,.45);
  max-height:0;
  overflow:hidden;
  transition:max-height .28s ease;
}
.nav-drawer.is-open{display:block;max-height:400px;}
.drawer-link{
  display:flex;
  align-items:center;
  height:52px;
  padding-left:14px;
  border-bottom:1px solid var(--c-line);
  color:var(--c-body);
  font-size:16px;
  transition:color .18s ease,background-color .18s ease;
}
.drawer-link:last-child{border-bottom:none;}
.drawer-link:hover{color:var(--c-ink);background:var(--c-surface);}
.drawer-link.is-active{
  color:var(--c-primary);
  font-weight:600;
  border-left:3px solid var(--c-primary);
  background:var(--c-primary-soft);
}

/* ---------- 分类页 Hero ---------- */
.hero-category{
  position:relative;
  min-height:380px;
  display:flex;
  align-items:center;
  background-image:linear-gradient(115deg,rgba(9,38,33,.90) 0%,rgba(9,38,33,.72) 48%,rgba(16,21,26,.55) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  color:#fff;
  padding:72px 0;
}
.hero-category .breadcrumb{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:rgba(255,255,255,.66);
  margin-bottom:22px;
}
.hero-category .breadcrumb a{color:rgba(255,255,255,.8);transition:color .18s ease;}
.hero-category .breadcrumb a:hover{color:#fff;}
.hero-category .breadcrumb .sep{color:rgba(255,255,255,.4);}
.hero-category .breadcrumb .current{color:#fff;font-weight:500;}
.hero-category h1{
  color:#fff;
  max-width:820px;
  font-size:clamp(30px,3.8vw,46px);
  margin-bottom:18px;
}
.hero-category .hero-lead{
  max-width:640px;
  font-size:17px;
  line-height:1.85;
  color:rgba(255,255,255,.82);
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}
.hero-meta .tag{
  background:rgba(255,255,255,.12);
  color:rgba(255,255,255,.92);
  border:1px solid rgba(255,255,255,.18);
}

/* ---------- 主体两栏 ---------- */
.category-body{padding:88px 0 96px;}
.layout-grid{
  display:grid;
  grid-template-columns:252px minmax(0,1fr);
  gap:64px;
  align-items:start;
}
.toc{position:sticky;top:100px;}
.toc-title{
  font-size:13px;
  letter-spacing:.14em;
  color:var(--c-body);
  padding-bottom:12px;
  border-bottom:1px solid var(--c-line);
  margin-bottom:14px;
}
.toc-list a{
  display:block;
  padding:10px 0 10px 14px;
  border-left:2px solid var(--c-line);
  color:var(--c-body);
  font-size:15px;
  line-height:1.6;
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.toc-list a:hover{color:var(--c-ink);border-left-color:var(--c-primary);background:var(--c-surface);}
.toc-list a.is-current{color:var(--c-primary);font-weight:600;border-left-color:var(--c-primary);background:var(--c-primary-soft);}
.toc-note{
  margin-top:28px;
  padding:18px 20px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  font-size:14px;
  line-height:1.8;
  color:var(--c-body);
}
.toc-note strong{display:block;color:var(--c-ink);font-size:15px;margin-bottom:8px;}

/* ---------- 内容块 ---------- */
.content-block{
  padding-bottom:72px;
  margin-bottom:72px;
  border-bottom:1px solid var(--c-line);
  scroll-margin-top:100px;
}
.content-block:last-of-type{border-bottom:none;margin-bottom:0;padding-bottom:0;}
.block-head{display:flex;align-items:baseline;gap:18px;margin-bottom:14px;}
.block-index{
  font-size:34px;
  font-weight:700;
  line-height:1;
  color:#D6E1DE;
  font-variant-numeric:tabular-nums;
  flex-shrink:0;
}
.block-head h2{flex:1;}
.block-desc{
  max-width:760px;
  font-size:17px;
  line-height:1.9;
  color:var(--c-text);
  margin-bottom:28px;
}
.block-desc + .block-desc{margin-top:-14px;}

.point-list{margin-top:8px;}
.point-list li{
  position:relative;
  padding-left:24px;
  margin-bottom:15px;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  max-width:760px;
}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:8px;height:8px;
  border-radius:2px;
  background:var(--c-primary-soft);
  border:1px solid var(--c-primary);
}
.point-list li b{color:var(--c-ink);font-weight:600;}

.feature-img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  margin:28px 0 8px;
  border:1px solid var(--c-line);
}
.img-caption{
  font-size:13px;
  color:var(--c-body);
  text-align:center;
  line-height:1.7;
}

/* ---------- 步骤条 ---------- */
.steps{margin-top:36px;}
.step{
  position:relative;
  padding-left:40px;
  padding-bottom:38px;
}
.step::before{
  content:"";
  position:absolute;
  left:6px;top:24px;bottom:-4px;
  width:1px;
  background:var(--c-line);
}
.step:last-child{padding-bottom:0;}
.step:last-child::before{content:none;}
.step-dot{
  position:absolute;
  left:0;top:8px;
  width:13px;height:13px;
  border-radius:50%;
  background:var(--c-primary);
  box-shadow:0 0 0 4px var(--c-primary-soft);
}
.step.is-key .step-dot{background:var(--c-accent);box-shadow:0 0 0 4px rgba(255,107,53,.16);}
.step-num{
  display:block;
  font-size:38px;
  font-weight:700;
  line-height:1;
  color:#E2EAE8;
  font-variant-numeric:tabular-nums;
  margin-bottom:8px;
}
.step h3{margin-bottom:8px;}
.step p{
  max-width:700px;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
}

/* ---------- 对照表 ---------- */
.table-wrap{
  margin-top:30px;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:#fff;
}
.compare-table{
  width:100%;
  border-collapse:collapse;
  font-size:15px;
  margin:0;
}
.compare-table caption{
  caption-side:top;
  text-align:left;
  padding:16px 20px 0;
  font-size:14px;
  color:var(--c-body);
}
.compare-table th{
  background:var(--c-surface);
  color:var(--c-ink);
  font-size:14px;
  font-weight:600;
  text-align:left;
  padding:15px 20px;
  border-bottom:1px solid var(--c-line);
  white-space:nowrap;
}
.compare-table td{
  padding:15px 20px;
  border-bottom:1px solid var(--c-line);
  color:var(--c-text);
  line-height:1.7;
  vertical-align:top;
}
.compare-table tbody tr:last-child td{border-bottom:none;}
.compare-table tbody tr{transition:background-color .18s ease;}
.compare-table tbody tr:hover{background:#FBFCFB;}

/* ---------- 图文条 ---------- */
.media-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:44px;
  align-items:center;
  margin-top:26px;
}
.media-row .media-text h3{margin-bottom:14px;}
.media-row .media-text p{font-size:16px;line-height:1.9;color:var(--c-text);}
.media-row img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border:1px solid var(--c-line);
}
.media-row.reverse .media-text{order:2;}
.media-row.reverse .media-figure{order:1;}

/* ---------- 引用块 ---------- */
.quote{
  margin-top:32px;
  padding:20px 24px;
  background:var(--c-surface);
  border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-card) var(--r-card) 0;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  max-width:820px;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:var(--c-dark);
  color:#fff;
  padding:80px 0;
}
.cta-inner{
  border:1px solid rgba(255,255,255,.14);
  border-radius:16px;
  padding:44px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.cta-inner h2{color:#fff;margin-bottom:12px;}
.cta-inner p{
  max-width:620px;
  font-size:16px;
  line-height:1.85;
  color:rgba(255,255,255,.72);
}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 上下页导航 ---------- */
.prev-next{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  padding:72px 0 0;
}
.pn-item{
  display:block;
  padding:22px 26px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.pn-item:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);border-color:#D3DAD8;}
.pn-label{
  display:block;
  font-size:13px;
  color:var(--c-body);
  margin-bottom:8px;
  letter-spacing:.04em;
}
.pn-title{font-size:17px;font-weight:600;color:var(--c-ink);}
.pn-item.next{text-align:right;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-dark);
  color:rgba(255,255,255,.72);
  padding:76px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:52px;
}
.footer-brand .brand-main{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.6);}
.footer-brand p{
  margin-top:18px;
  max-width:330px;
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.6);
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:18px;
}
.footer-links a{
  display:block;
  padding:6px 0;
  font-size:14px;
  color:rgba(255,255,255,.66);
  transition:color .18s ease;
}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-contact span{
  display:block;
  padding:5px 0;
  font-size:14px;
  color:rgba(255,255,255,.66);
  line-height:1.7;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:22px 0;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .main-nav{display:none;}
  .menu-toggle{display:flex;}
  .category-body{padding:72px 0 80px;}
  .layout-grid{grid-template-columns:1fr;gap:44px;}
  .toc{position:static;}
  .toc-list{display:flex;flex-wrap:wrap;gap:8px;}
  .toc-list a{
    border-left:none;
    border:1px solid var(--c-line);
    border-radius:var(--r-pill);
    padding:8px 16px;
    font-size:14px;
    background:#fff;
  }
  .toc-list a.is-current{background:var(--c-primary-soft);border-color:var(--c-primary);}
  .toc-note{margin-top:22px;}
  .media-row{gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
  .cta-inner{padding:36px;}
}

@media (max-width:640px){
  .container{padding:0 20px;}
  body{font-size:16px;}
  .hero-category{min-height:320px;padding:56px 0;}
  .hero-category .hero-lead{font-size:16px;}
  .category-body{padding:56px 0 64px;}
  .content-block{padding-bottom:56px;margin-bottom:56px;}
  .block-head{flex-direction:column;gap:8px;}
  .block-index{font-size:26px;}
  .point-list li{font-size:15px;}
  .step{padding-left:32px;padding-bottom:32px;}
  .step-num{font-size:30px;}
  .step p{font-size:15px;}
  .media-row,.media-row.reverse{grid-template-columns:1fr;}
  .media-row.reverse .media-text{order:1;}
  .media-row.reverse .media-figure{order:2;}
  .media-row img{aspect-ratio:16/10;}
  .table-wrap{border-radius:12px;background:transparent;border:none;overflow:visible;}
  .compare-table{border:1px solid var(--c-line);border-radius:12px;overflow:hidden;background:#fff;}
  .compare-table thead{display:none;}
  .compare-table tbody tr{display:block;border-bottom:1px solid var(--c-line);padding:6px 0;}
  .compare-table tbody tr:last-child{border-bottom:none;}
  .compare-table td{
    display:flex;
    justify-content:space-between;
    gap:16px;
    border-bottom:none;
    padding:10px 18px;
    font-size:15px;
  }
  .compare-table td::before{
    content:attr(data-label);
    flex-shrink:0;
    color:var(--c-body);
    font-size:13px;
    font-weight:500;
  }
  .cta-band{padding:56px 0;}
  .cta-inner{padding:28px 22px;border-radius:14px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .prev-next{grid-template-columns:1fr;padding-top:56px;}
  .pn-item.next{text-align:left;}
  .footer-grid{grid-template-columns:1fr;gap:34px;padding-bottom:38px;}
  .site-footer{padding-top:56px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}

@media (min-width:1025px){
  .menu-toggle{display:none;}
  .nav-drawer{display:none !important;}
}

/* roulang page: category2 */
:root{
  --brand:#0E5A4E;
  --brand-dark:#0A463C;
  --brand-soft:#E7F0ED;
  --accent:#FF6B35;
  --accent-soft:#FFEDE6;
  --ink:#10151A;
  --muted:#5A6B6B;
  --line:#E3E7E5;
  --soft:#F4F6F5;
  --bg:#FAFAF8;
  --dark:#0E1512;
  --ok:#1FA97A;
  --warn:#D9453B;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --shadow-hover:0 10px 24px -12px rgba(16,21,26,.18);
  --fs-h1:clamp(30px,3.6vw,42px);
  --fs-h2:clamp(24px,2.6vw,32px);
  --fs-h3:22px;
  --fs-h4:18px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--accent)}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);letter-spacing:0}
h1{font-size:var(--fs-h1);line-height:1.18}
h2{font-size:var(--fs-h2);line-height:1.3}
h3{font-size:var(--fs-h3);line-height:1.4;font-weight:600}
h4{font-size:var(--fs-h4);line-height:1.5;font-weight:600}
p{margin:0 0 1.05em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:inherit}
::selection{background:var(--brand);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media (max-width:1024px){.container{padding:0 24px}}
@media (max-width:640px){.container{padding:0 20px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;line-height:1.2;
  border:1px solid transparent;background:transparent;color:var(--brand);
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
  text-align:center;
}
.btn:hover{transform:translateY(-1px);color:#fff}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px -10px rgba(14,90,78,.7)}
.btn-primary:hover{background:var(--brand-dark);color:#fff;box-shadow:0 12px 22px -12px rgba(14,90,78,.75)}
.btn-outline{border-color:var(--brand);color:var(--brand);background:transparent}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px)}
.btn-ghost{color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.85)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{display:flex;width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand);
  text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
}
.text-link:hover{color:var(--accent)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(250,250,248,.95);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,background .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(250,250,248,.98)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:flex;flex-direction:column;line-height:1.15;color:var(--ink)}
.brand-main{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--ink)}
.brand-sub{font-size:11.5px;font-weight:500;color:var(--muted);letter-spacing:.14em}
.brand:hover .brand-main{color:var(--brand)}
.main-nav{display:flex;align-items:center;gap:30px}
.nav-link{
  position:relative;font-size:15px;color:var(--muted);padding:6px 0;font-weight:500;
}
.nav-link:hover{color:var(--ink)}
.nav-link.is-active{color:var(--ink);font-weight:700}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--brand);
}
.header-actions{display:flex;align-items:center;gap:12px}
.menu-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.menu-toggle span{display:block;width:17px;height:1.5px;background:var(--ink);border-radius:2px;transition:.2s ease}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

/* ---------- Hero ---------- */
.page-hero{position:relative;background:var(--dark);overflow:hidden;color:#fff}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(100deg,rgba(10,20,17,.94) 0%,rgba(10,20,17,.80) 48%,rgba(10,20,17,.52) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.page-hero .container{position:relative;z-index:1;padding-top:52px;padding-bottom:56px;min-height:360px;display:flex;flex-direction:column;justify-content:center}
.page-hero h1{color:#fff;max-width:820px}
.hero-lead{
  margin:20px 0 0;max-width:640px;font-size:16.5px;line-height:1.9;color:rgba(255,255,255,.82);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-flex;align-items:center;font-size:13px;line-height:1.4;font-weight:500;
  padding:5px 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand);
}
.tag-accent{background:var(--accent-soft);color:#C24A1C}
.hero-tags .tag{background:rgba(255,255,255,.1);color:rgba(255,255,255,.88);border:1px solid rgba(255,255,255,.16)}

.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.62);margin-bottom:22px}
.breadcrumb a{color:rgba(255,255,255,.72)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.36)}
.breadcrumb .current{color:#fff;font-weight:600}

/* ---------- 主区 ---------- */
.section{padding:76px 0 0}
.section-tight{padding:56px 0 0}
.side-toc{
  position:sticky;top:96px;
  border:1px solid var(--line);border-radius:var(--r-card);background:#fff;padding:22px 20px;
}
.toc-title{margin:0 0 14px;font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.12em}
.side-toc ul{display:flex;flex-direction:column;gap:2px}
.side-toc ul a{
  display:block;padding:9px 0 9px 14px;font-size:14.5px;color:var(--muted);border-left:2px solid var(--line);
  transition:.18s ease;
}
.side-toc ul a:hover{color:var(--ink);border-left-color:var(--brand-soft)}
.side-toc ul a.is-current{color:var(--brand);font-weight:600;border-left-color:var(--accent)}
.side-toc .btn{margin-top:20px}
@media (max-width:1024px){
  .side-toc{position:static;margin-bottom:36px}
  .side-toc ul{flex-direction:row;flex-wrap:wrap;gap:8px}
  .side-toc ul a{border-left:0;border:1px solid var(--line);border-radius:999px;padding:6px 12px;font-size:13.5px}
  .side-toc ul a:hover,.side-toc ul a.is-current{border-color:var(--brand);background:var(--brand-soft);color:var(--brand)}
}

.content-block{padding-bottom:64px;scroll-margin-top:96px}
.content-block + .content-block{border-top:1px solid var(--line);padding-top:56px}
.block-index{
  display:block;font-size:13px;font-weight:700;letter-spacing:.18em;color:var(--accent);margin-bottom:12px;
}
.content-block h2{margin-bottom:14px}
.block-intro{color:var(--muted);max-width:760px;font-size:16.5px}
.block-intro strong{color:var(--ink);font-weight:600}

.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;margin-top:28px}
.feature-row.is-reverse .feature-media{order:-1}
.feature-media{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);background:var(--soft)}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0}
@media (max-width:768px){
  .feature-row{grid-template-columns:1fr;gap:22px}
  .feature-row.is-reverse .feature-media{order:2}
}

.check-list{display:flex;flex-direction:column;gap:12px}
.check-list li{position:relative;padding-left:24px;font-size:16px;color:#20302E;line-height:1.85}
.check-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:2px;border:1.5px solid var(--brand);
}
.check-list li strong{font-weight:600;color:var(--ink)}

.mini-card{
  height:100%;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;padding:22px;
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.mini-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#D8DEDB}
.mini-card h3{font-size:18px;margin-bottom:10px}
.mini-card p{margin:0;font-size:15px;line-height:1.85;color:var(--muted)}

.note-box{
  margin-top:26px;border:1px solid var(--line);border-left:3px solid var(--brand);
  border-radius:0 12px 12px 0;background:#fff;padding:16px 20px;font-size:15px;color:var(--muted);
}
.note-box b{color:var(--ink);font-weight:600}

.spec-wrap{margin-top:26px;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:#fff}
table.spec-table{width:100%;border-collapse:collapse;margin:0}
table.spec-table th{
  background:var(--soft);color:var(--ink);font-size:14px;font-weight:600;text-align:left;
  padding:14px 18px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.spec-table td{
  padding:15px 18px;font-size:15px;color:var(--muted);border-bottom:1px solid var(--line);vertical-align:top;
}
table.spec-table tr:last-child td{border-bottom:0}
table.spec-table td:first-child{color:var(--ink);font-weight:600;white-space:nowrap}
table.spec-table tbody tr:hover{background:#FBFCFB}
@media (max-width:640px){
  .spec-wrap{border:0;border-radius:0;background:transparent;overflow:visible}
  table.spec-table thead{display:none}
  table.spec-table,table.spec-table tbody,table.spec-table tr,table.spec-table td{display:block;width:100%}
  table.spec-table tr{
    border:1px solid var(--line);border-radius:12px;background:#fff;padding:14px 16px;margin-bottom:12px;
  }
  table.spec-table td{border:0;padding:5px 0;display:flex;justify-content:space-between;gap:18px;font-size:14.5px}
  table.spec-table td::before{
    content:attr(data-label);color:var(--muted);font-size:13.5px;font-weight:600;flex:0 0 auto;
  }
  table.spec-table td:first-child{white-space:normal;padding-bottom:10px;border-bottom:1px dashed var(--line);margin-bottom:6px}
  table.spec-table td:first-child::before{display:none}
}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:12px;background:var(--dark);border:1px solid rgba(255,255,255,.1);border-radius:18px;
  padding:46px 48px;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,28px);margin-bottom:12px}
.cta-band p{margin:0;color:rgba(255,255,255,.68);font-size:15.5px;max-width:620px;line-height:1.9}
.cta-band .btn-primary{background:var(--accent);box-shadow:0 10px 24px -14px rgba(255,107,53,.9)}
.cta-band .btn-primary:hover{background:#E85C29}
@media (max-width:768px){.cta-band{padding:34px 24px;gap:24px}.cta-band .btn-primary{width:100%}}

.cat-nav{
  margin:26px 0 0;display:flex;align-items:stretch;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.cat-nav a{
  flex:1 1 260px;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;padding:18px 20px;
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.cat-nav a:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#D8DEDB;color:var(--brand)}
.cat-nav small{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.cat-nav b{font-size:17px;font-weight:600;color:var(--ink)}
.cat-nav a:hover b{color:var(--brand)}
.cat-nav .next{text-align:right}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:44px}
.site-footer .brand-main{color:#fff}
.site-footer .brand-sub{color:rgba(255,255,255,.55)}
.footer-brand p{margin:18px 0 0;font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.6);max-width:340px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{color:rgba(255,255,255,.66);font-size:14px}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-contact{display:flex;flex-direction:column;gap:11px;font-size:14px;color:rgba(255,255,255,.66)}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 30px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.5);
}
@media (max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .site-footer{padding-top:56px;margin-top:68px}
}

/* ---------- 移动端导航 ---------- */
@media (max-width:1024px){
  .menu-toggle{display:flex}
  .main-nav{
    position:absolute;left:0;right:0;top:68px;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;padding:0 20px;border-bottom:1px solid var(--line);
    box-shadow:0 20px 34px -26px rgba(16,21,26,.5);
    transform:translateY(-10px);opacity:0;visibility:hidden;transition:opacity .22s ease,transform .22s ease,visibility .22s;
  }
  .main-nav.is-open{transform:translateY(0);opacity:1;visibility:visible}
  .nav-link{
    height:52px;display:flex;align-items:center;padding:0;font-size:16px;border-bottom:1px solid var(--soft);
  }
  .nav-link.is-active{border-left:3px solid var(--brand);padding-left:12px;border-bottom-color:var(--line)}
  .nav-link.is-active::after{display:none}
}
@media (max-width:640px){
  .header-cta{display:none}
  .page-hero .container{min-height:auto;padding-top:36px;padding-bottom:44px}
  .section{padding:48px 0 0}
  .content-block{padding-bottom:44px}
  .content-block + .content-block{padding-top:40px}
  .cta-band h2{font-size:21px}
}

/* roulang page: category3 */
:root{
  --brand:#0E5A4E;
  --brand-dark:#0A453C;
  --brand-soft:#E9F2F0;
  --accent:#FF6B35;
  --accent-soft:#FFF1EA;
  --ink:#10151A;
  --muted:#5A6B6B;
  --line:#E3E7E5;
  --soft:#F4F6F5;
  --bg:#FAFAF8;
  --dark:#0E1512;
  --success:#1FA97A;
  --danger:#D9453B;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --r-pill:999px;
  --shadow-hover:0 10px 24px -12px rgba(16,21,26,.18);
  --shadow-soft:0 6px 18px -14px rgba(16,21,26,.35);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;background:transparent;}
a:hover,a:focus{color:var(--accent);}
button{font-family:inherit;}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font);
  color:var(--ink);
  letter-spacing:0;
  margin:0;
  font-style:normal;
}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
::selection{background:var(--brand-soft);color:var(--brand-dark);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
@media (min-width:1440px){
  .container{max-width:1272px;}
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(250,250,248,.9);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,background .2s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  background:rgba(250,250,248,.96);
}
.header-inner{
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.brand{
  display:flex;
  flex-direction:column;
  line-height:1.15;
  flex:0 0 auto;
}
.brand-main{
  font-size:18px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:.02em;
}
.brand-sub{
  font-size:11.5px;
  color:var(--muted);
  letter-spacing:.14em;
  margin-top:2px;
}
.brand:hover .brand-main{color:var(--brand);}
.main-nav{
  display:flex;
  align-items:center;
  gap:30px;
  flex:1 1 auto;
  justify-content:center;
}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--muted);
  padding:8px 0;
  transition:color .18s ease;
}
.nav-link:hover{color:var(--ink);}
.nav-link.is-active{
  color:var(--ink);
  font-weight:600;
}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
}
.nav-toggle{
  display:none;
  width:40px;
  height:40px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:#fff;
  color:var(--ink);
  font-size:16px;
  line-height:1;
  cursor:pointer;
  transition:border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* 移动端抽屉 */
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  overflow:hidden;
  max-height:0;
  transition:max-height .26s ease;
}
.mobile-drawer.is-open{max-height:420px;}
.mobile-drawer .drawer-inner{padding:6px 0 14px;}
.mobile-drawer a{
  display:block;
  height:52px;
  line-height:52px;
  padding:0 24px;
  font-size:16px;
  color:var(--ink);
  border-left:3px solid transparent;
}
.mobile-drawer a.is-active{
  border-left-color:var(--brand);
  color:var(--brand);
  font-weight:600;
  background:var(--soft);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--brand);
  color:#fff;
  border-color:var(--brand);
}
.btn-primary:hover{
  background:var(--brand-dark);
  border-color:var(--brand-dark);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 10px 20px -12px rgba(14,90,78,.7);
}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{
  background:transparent;
  color:var(--brand);
  border-color:var(--brand);
}
.btn-ghost:hover{
  background:var(--brand-soft);
  color:var(--brand-dark);
  border-color:var(--brand-dark);
}
.btn-light{
  background:rgba(255,255,255,.08);
  color:#fff;
  border-color:rgba(255,255,255,.35);
}
.btn-light:hover{
  background:rgba(255,255,255,.16);
  color:#fff;
  border-color:rgba(255,255,255,.6);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--brand);
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:1px;
}
.text-link:hover{color:var(--accent);}
.link-arrow::after{content:"→";font-size:14px;transition:transform .18s ease;}
.link-arrow:hover::after{transform:translateX(3px);}

/* ---------- 页面 Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:#0E1512 url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#fff;
  padding:76px 0 64px;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(104deg,rgba(14,21,18,.93) 0%,rgba(14,21,18,.78) 46%,rgba(14,21,18,.58) 100%);
}
.page-hero .container{position:relative;z-index:1;}
.hero-tag{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 14px;
  border-radius:var(--r-pill);
  background:rgba(255,107,53,.16);
  border:1px solid rgba(255,107,53,.4);
  color:#FFB694;
  font-size:13px;
  font-weight:500;
  letter-spacing:.06em;
  margin-bottom:20px;
}
.page-hero h1{
  font-size:clamp(30px,3.6vw,44px);
  line-height:1.24;
  font-weight:700;
  color:#fff;
  max-width:760px;
  margin:0 0 18px;
}
.page-hero .hero-lead{
  max-width:640px;
  font-size:17px;
  line-height:1.85;
  color:rgba(255,255,255,.82);
  margin:0 0 28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-crumbs{
  margin-top:34px;
  padding-top:18px;
  border-top:1px solid rgba(255,255,255,.14);
  font-size:14px;
  color:rgba(255,255,255,.62);
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
}
.hero-crumbs a{color:rgba(255,255,255,.68);}
.hero-crumbs a:hover{color:#fff;}
.hero-crumbs .sep{color:rgba(255,255,255,.32);}
.hero-crumbs .current{color:#FFB694;font-weight:600;}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec) 0;}
.section-soft{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:44px;}
.block-title{
  position:relative;
  padding-left:16px;
  font-size:clamp(24px,2.6vw,32px);
  line-height:1.32;
  font-weight:700;
  margin:0 0 16px;
}
.block-title::before{
  content:"";
  position:absolute;
  left:0;
  top:.24em;
  bottom:.24em;
  width:4px;
  border-radius:2px;
  background:var(--brand);
}
.block-desc{
  font-size:16.5px;
  line-height:1.9;
  color:var(--muted);
  margin:0;
}
.eyebrow{
  font-size:13px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--brand);
  margin-bottom:12px;
  text-transform:none;
}

/* ---------- 主体两栏 ---------- */
.layout{
  display:grid;
  grid-template-columns:264px minmax(0,1fr);
  gap:56px;
  align-items:start;
}
.layout-main{min-width:0;}
.toc{
  position:sticky;
  top:96px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:#fff;
  padding:22px 20px;
}
.toc h2{
  font-size:14px;
  font-weight:600;
  color:var(--muted);
  letter-spacing:.1em;
  margin:0 0 14px;
}
.toc-list li{border-top:1px solid var(--line);}
.toc-list li:first-child{border-top:0;}
.toc-list a{
  display:block;
  padding:11px 0;
  font-size:15px;
  color:var(--muted);
  transition:color .18s ease,padding-left .18s ease;
}
.toc-list a:hover{color:var(--brand);padding-left:4px;}
.toc-list a .num{
  display:inline-block;
  width:22px;
  color:#B6C0BF;
  font-size:13px;
  font-variant-numeric:tabular-nums;
}
.toc-foot{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:14px;
  color:var(--muted);
  line-height:1.75;
}

/* ---------- 内容块 ---------- */
.block{
  padding:0 0 64px;
  scroll-margin-top:96px;
}
.block:last-of-type{padding-bottom:0;}
.block-head{margin-bottom:26px;}
.block-head h2{
  font-size:clamp(22px,2.2vw,28px);
  line-height:1.35;
  font-weight:700;
  margin:0 0 12px;
}
.block-head p{
  font-size:16.5px;
  line-height:1.9;
  color:var(--muted);
  max-width:760px;
  margin:0;
}
.prose{max-width:760px;}
.prose p{line-height:1.95;margin-bottom:1.3em;}
.prose strong{font-weight:600;color:var(--ink);}

/* 场景图文条 */
.scene-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:44px;
  align-items:center;
  padding:28px 0;
  border-top:1px solid var(--line);
}
.scene-row:first-of-type{border-top:0;padding-top:0;}
.scene-row.is-reverse .scene-media{order:-1;}
.scene-media{
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--soft);
  aspect-ratio:16/10;
}
.scene-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.scene-row:hover .scene-media img{transform:scale(1.03);}
.scene-body h3{
  font-size:22px;
  line-height:1.4;
  font-weight:600;
  margin:0 0 12px;
}
.scene-body p{
  font-size:16px;
  line-height:1.9;
  color:var(--muted);
  margin:0 0 14px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  background:var(--brand-soft);
  color:var(--brand);
  font-size:13px;
  font-weight:500;
  line-height:1.4;
}
.tag-accent{background:var(--accent-soft);color:#C24A1C;}

/* 要点列表 */
.point-list{margin:6px 0 0;}
.point-list li{
  position:relative;
  padding-left:22px;
  margin-bottom:12px;
  font-size:16.5px;
  line-height:1.9;
  color:var(--muted);
}
.point-list li:last-child{margin-bottom:0;}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--brand);
}
.point-list li strong{color:var(--ink);font-weight:600;}

/* 卡片 */
.card-grid{margin-top:8px;}
.card{
  display:flex;
  flex-direction:column;
  height:100%;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:#fff;
  overflow:hidden;
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-2px);
  border-color:#D6DEDC;
}
.card-cover{
  aspect-ratio:16/9;
  background:var(--soft);
  overflow:hidden;
}
.card-cover img{width:100%;height:100%;object-fit:cover;}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.card-body h3{
  font-size:18px;
  line-height:1.5;
  font-weight:600;
  margin:0 0 10px;
}
.card-body p{
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
  margin:0 0 16px;
}
.card-meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:13px;
  color:var(--muted);
  padding-top:14px;
  border-top:1px solid var(--line);
}
.grid-cards{margin-top:8px;}

/* 数据/成果条 */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:#fff;
  overflow:hidden;
  margin-top:8px;
}
.stat-item{
  padding:26px 24px;
  border-left:1px solid var(--line);
}
.stat-item:first-child{border-left:0;}
.stat-item .num{
  display:block;
  font-size:30px;
  font-weight:700;
  line-height:1.2;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  margin-bottom:6px;
}
.stat-item .label{
  font-size:14.5px;
  line-height:1.75;
  color:var(--muted);
}

/* 引用块 */
.quote{
  margin:24px 0 0;
  padding:20px 22px;
  background:var(--soft);
  border-left:3px solid var(--brand);
  border-radius:0 var(--r-card) var(--r-card) 0;
  font-size:16px;
  line-height:1.9;
  color:var(--muted);
  max-width:760px;
}

/* 对照表 */
.table-wrap{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:#fff;
  margin-top:8px;
}
table.compare{
  width:100%;
  font-size:15.5px;
}
table.compare thead th{
  background:var(--soft);
  color:var(--ink);
  font-weight:600;
  font-size:14px;
  letter-spacing:.04em;
  text-align:left;
  padding:16px 20px;
  border-bottom:1px solid var(--line);
}
table.compare tbody td{
  padding:18px 20px;
  border-bottom:1px solid var(--line);
  color:var(--muted);
  line-height:1.8;
  vertical-align:top;
}
table.compare tbody tr:last-child td{border-bottom:0;}
table.compare tbody tr:hover{background:#FBFCFB;}
table.compare td:first-child{color:var(--ink);font-weight:600;}

/* CTA 带 */
.cta-band{
  padding:0 0 var(--sec);
}
.cta-inner{
  background:var(--dark);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);
  padding:52px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  color:#fff;
}
.cta-inner h2{
  font-size:clamp(22px,2.4vw,30px);
  line-height:1.35;
  font-weight:700;
  color:#fff;
  margin:0 0 10px;
}
.cta-inner p{
  font-size:16px;
  line-height:1.85;
  color:rgba(255,255,255,.72);
  margin:0;
  max-width:620px;
}
.cta-actions{display:flex;gap:12px;flex:0 0 auto;flex-wrap:wrap;}

/* 分类前后导航 */
.cat-nav{
  border-top:1px solid var(--line);
  padding:28px 0 0;
  display:flex;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  margin-top:64px;
}
.cat-nav a{
  font-size:15px;
  color:var(--muted);
  display:inline-flex;
  align-items:center;
  gap:8px;
  transition:color .18s ease;
}
.cat-nav a:hover{color:var(--brand);}
.cat-nav .label{font-size:13px;color:#9AA5A4;display:block;margin-bottom:2px;}
.cat-nav .next{text-align:right;margin-left:auto;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#0E1512;
  color:rgba(255,255,255,.72);
  padding:72px 0 26px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:44px;
}
.site-footer .brand-main{color:#fff;font-size:19px;}
.site-footer .brand-sub{color:rgba(255,255,255,.55);}
.footer-brand p{
  font-size:14.5px;
  line-height:1.9;
  color:rgba(255,255,255,.6);
  margin:16px 0 0;
  max-width:340px;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin:0 0 16px;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  font-size:14px;
  color:rgba(255,255,255,.66);
  transition:color .18s ease,text-underline-offset .18s ease;
}
.footer-links a:hover{
  color:#fff;
  text-decoration:underline;
  text-underline-offset:3px;
}
.footer-contact{display:flex;flex-direction:column;gap:11px;font-size:14px;color:rgba(255,255,255,.66);}
.footer-bottom{
  margin-top:52px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--sec:72px;}
  .container{padding:0 24px;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .mobile-drawer{display:block;}
  .layout{grid-template-columns:1fr;gap:36px;}
  .toc{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  .stat-strip{grid-template-columns:1fr;}
  .stat-item{border-left:0;border-top:1px solid var(--line);}
  .stat-item:first-child{border-top:0;}
}
@media (max-width:768px){
  .scene-row{grid-template-columns:1fr;gap:22px;}
  .scene-row.is-reverse .scene-media{order:0;}
  .page-hero{padding:60px 0 48px;}
  .hero-actions .btn{width:100%;}
}
@media (max-width:640px){
  :root{--sec:56px;}
  body{font-size:16.5px;}
  .container{padding:0 20px;}
  .header-inner{height:64px;}
  .brand-main{font-size:16.5px;}
  .header-actions .btn-primary{display:none;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .page-hero h1{font-size:clamp(26px,7vw,32px);}
  .cta-inner{padding:32px 22px;}
  .cat-nav{flex-direction:column;gap:16px;}
  .cat-nav .next{margin-left:0;text-align:left;}
  /* 表格卡片化 */
  .table-wrap{border:0;background:transparent;overflow:visible;}
  table.compare thead{display:none;}
  table.compare tbody tr{
    display:block;
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--r-card);
    margin-bottom:14px;
    padding:6px 4px;
  }
  table.compare tbody td{
    display:flex;
    justify-content:space-between;
    gap:16px;
    padding:12px 18px;
    border-bottom:1px dashed var(--line);
  }
  table.compare tbody tr td:last-child{border-bottom:0;}
  table.compare tbody td::before{
    content:attr(data-label);
    flex:0 0 84px;
    color:#9AA5A4;
    font-size:13px;
    font-weight:500;
  }
  table.compare td:first-child{color:var(--ink);font-weight:600;}
}

/* roulang page: category4 */
:root{
  --primary:#0E5A4E;
  --primary-dark:#0A473E;
  --primary-soft:#E8F2EF;
  --accent:#FF6B35;
  --accent-soft:#FFF1EB;
  --ink:#10151A;
  --muted:#5A6B6B;
  --line:#E3E7E5;
  --soft:#F4F6F5;
  --paper:#FAFAF8;
  --dark:#0E1512;
  --success:#1FA97A;
  --danger:#D9453B;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --r-pill:999px;
  --shadow-hover:0 10px 24px -12px rgba(16,21,26,.18);
  --shadow-soft:0 2px 10px -6px rgba(16,21,26,.14);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img);}
a{color:var(--primary);text-decoration:none;text-underline-offset:2px;transition:color .18s ease,background-color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;}
a:hover{color:var(--accent);}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:700;letter-spacing:0;}
h1{font-size:clamp(34px,4.4vw,52px);line-height:1.18;}
h2{font-size:clamp(26px,3vw,34px);line-height:1.3;}
h3{font-size:22px;line-height:1.4;font-weight:600;}
h4{font-size:18px;line-height:1.5;font-weight:600;}
p{margin:0 0 1.3em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:16px;font-weight:600;line-height:1.2;white-space:nowrap;
  transition:all .18s ease;text-decoration:none;
}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary);}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px -10px rgba(14,90,78,.55);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary);}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary-dark);border-color:var(--primary-dark);}
.btn-accent{background:var(--accent);color:#fff;border-color:var(--accent);}
.btn-accent:hover{background:#e85c28;border-color:#e85c28;color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px -10px rgba(255,107,53,.6);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff;border-color:#fff;}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}
.text-link{color:var(--primary);font-weight:600;font-size:15px;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;}
.text-link:hover{color:var(--accent);}
.text-link i{margin-left:6px;font-size:12px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;height:68px;
  background:transparent;
  transition:background-color .22s ease,border-color .22s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{background:rgba(250,250,248,.94);backdrop-filter:saturate(180%) blur(10px);border-bottom-color:var(--line);}
.header-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;flex-direction:column;line-height:1.05;text-decoration:none;flex-shrink:0;}
.brand-main{font-size:20px;font-weight:700;color:var(--primary);letter-spacing:.01em;}
.brand-sub{font-size:11.5px;font-weight:500;color:var(--muted);letter-spacing:.14em;margin-top:3px;}
.brand:hover .brand-main{color:var(--primary-dark);}
.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-block;padding:8px 14px;
  font-size:15px;color:var(--muted);border-radius:6px;font-weight:500;
}
.nav-link:hover{color:var(--ink);background:var(--soft);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--primary);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;}
.menu-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:transparent;padding:0;position:relative;
}
.menu-toggle span{
  position:absolute;left:11px;right:11px;height:1.5px;background:var(--ink);border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.menu-toggle span:nth-child(1){top:14px;}
.menu-toggle span:nth-child(2){top:19.5px;}
.menu-toggle span:nth-child(3){top:25px;}
.menu-toggle.is-open span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.menu-toggle.is-open span:nth-child(2){opacity:0;}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}
.mobile-nav{
  display:none;position:absolute;top:68px;left:0;right:0;
  background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:6px 20px 14px;
}
.mobile-nav.is-open{display:block;}
.mobile-nav .nav-link{display:block;height:52px;line-height:52px;padding:0 12px;border-bottom:1px solid var(--line);border-radius:0;font-size:16px;}
.mobile-nav .nav-link:last-child{border-bottom:0;}
.mobile-nav .nav-link.is-active{border-left:3px solid var(--primary);padding-left:14px;background:var(--primary-soft);}

/* ---------- Page hero (narrow) ---------- */
.page-hero{
  position:relative;overflow:hidden;
  min-height:360px;display:flex;align-items:center;
  background:var(--dark);
}
.page-hero .hero-media{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center 35%;
  opacity:.42;
}
.page-hero .hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(14,21,18,.94) 0%,rgba(14,90,78,.78) 55%,rgba(14,21,18,.86) 100%);
}
.hero-inner{position:relative;z-index:2;padding-top:56px;padding-bottom:56px;max-width:900px;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:14px;color:rgba(255,255,255,.66);margin-bottom:20px;
}
.breadcrumb a{color:rgba(255,255,255,.8);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{color:rgba(255,255,255,.38);}
.breadcrumb .current{color:var(--accent);}
.hero-tag{
  display:inline-block;padding:5px 14px;border-radius:var(--r-pill);
  background:rgba(255,107,53,.16);border:1px solid rgba(255,107,53,.42);
  color:#FFB79A;font-size:13px;font-weight:500;letter-spacing:.06em;margin-bottom:18px;
}
.page-hero h1{color:#fff;margin-bottom:18px;font-size:clamp(28px,3.5vw,44px);max-width:760px;}
.page-hero h1 .hl{color:#8FD8C6;}
.page-hero .hero-sub{
  color:rgba(255,255,255,.82);font-size:17px;line-height:1.85;max-width:640px;margin:0;
}

/* ---------- Page body layout ---------- */
.page-body{padding:72px 0 96px;}
.toc-col{position:relative;}
.toc{
  position:sticky;top:96px;
  border:1px solid var(--line);border-radius:var(--r-card);
  background:#fff;padding:22px 22px 18px;
}
.toc-title{font-size:13px;font-weight:600;letter-spacing:.14em;color:var(--muted);margin-bottom:14px;text-transform:none;}
.toc ul li{border-bottom:1px solid var(--line);}
.toc ul li:last-child{border-bottom:0;}
.toc ul li a{
  display:block;padding:11px 0 11px 16px;position:relative;
  font-size:15px;color:var(--muted);line-height:1.5;
}
.toc ul li a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:2px;background:var(--line);transition:background-color .18s ease;
}
.toc ul li a:hover{color:var(--primary);}
.toc ul li a:hover::before{background:var(--primary);}
.toc-cta{
  margin-top:18px;padding-top:18px;border-top:1px dashed var(--line);
}
.toc-cta p{font-size:14px;color:var(--muted);line-height:1.75;margin-bottom:12px;}

.content-col{max-width:820px;}
.content-block{padding-bottom:64px;margin-bottom:64px;border-bottom:1px solid var(--line);}
.content-block:last-of-type{border-bottom:0;margin-bottom:0;padding-bottom:24px;}
.block-head{margin-bottom:32px;}
.block-head h2{
  position:relative;padding-left:16px;margin-bottom:16px;
}
.block-head h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:2px;background:var(--primary);
}
.block-head p{color:var(--muted);font-size:16px;line-height:1.9;max-width:720px;margin:0;}

/* ---------- Plan cards ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch;margin-bottom:40px;}
.plan-card{
  position:relative;display:flex;flex-direction:column;
  border:1px solid var(--line);border-radius:var(--r-card);background:#fff;
  padding:28px 24px 24px;transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.plan-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.plan-card.is-featured{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary) inset;}
.plan-badge{
  position:absolute;top:-13px;left:24px;
  display:inline-block;padding:4px 13px;border-radius:var(--r-pill);
  background:var(--accent);color:#fff;font-size:12.5px;font-weight:600;letter-spacing:.04em;
}
.plan-name{font-size:18px;font-weight:700;margin-bottom:8px;}
.plan-desc{font-size:14.5px;color:var(--muted);line-height:1.75;margin-bottom:20px;min-height:52px;}
.plan-price{display:flex;align-items:baseline;gap:6px;padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:18px;}
.price-num{
  font-size:34px;font-weight:700;line-height:1;color:var(--ink);
  font-variant-numeric:tabular-nums;
}
.plan-card.is-featured .price-num{color:var(--primary);}
.price-unit{font-size:13px;color:var(--muted);}
.plan-features{flex:1 1 auto;margin-bottom:22px;}
.plan-features li{
  position:relative;padding:0 0 12px 20px;font-size:15px;color:var(--muted);line-height:1.7;
}
.plan-features li:last-child{padding-bottom:0;}
.plan-features li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;
  border:1.5px solid var(--primary);border-radius:2px;
}
.plan-card .btn{margin-top:auto;}

/* ---------- Picker row (image + list) ---------- */
.pick-row{
  display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;
  background:var(--soft);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;margin-bottom:8px;
}
.pick-row img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);}
.pick-row h3{margin-bottom:14px;}
.pick-list li{position:relative;padding:0 0 12px 20px;font-size:15.5px;color:var(--muted);line-height:1.75;}
.pick-list li:last-child{padding-bottom:0;}
.pick-list li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:2px;background:var(--primary);opacity:.85;
}
.pick-list li strong{color:var(--ink);font-weight:600;}

/* ---------- Compare table ---------- */
.compare-wrap{border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:#fff;}
table.compare-table{width:100%;border-collapse:collapse;font-size:15px;}
.compare-table thead th{
  background:var(--soft);color:var(--ink);font-weight:600;font-size:14px;
  text-align:left;padding:16px 20px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.compare-table thead th:first-child{color:var(--muted);font-weight:500;}
.compare-table tbody td{
  padding:16px 20px;border-bottom:1px solid var(--line);color:var(--muted);line-height:1.7;vertical-align:middle;
}
.compare-table tbody tr:last-child td{border-bottom:0;}
.compare-table tbody td:first-child{color:var(--ink);font-weight:600;}
.compare-table tbody tr:hover td{background:#FBFCFB;}
.tag-mini{
  display:inline-block;padding:3px 10px;border-radius:var(--r-pill);
  font-size:13px;font-weight:500;line-height:1.4;
  background:var(--primary-soft);color:var(--primary);
}
.tag-mini.accent{background:var(--accent-soft);color:#C74A19;}

/* ---------- FAQ accordion ---------- */
.faq-accordion{border-top:1px solid var(--line);margin:0;}
.faq-accordion .accordion-item{border-bottom:1px solid var(--line);background:transparent;}
.faq-accordion .accordion-title{
  position:relative;display:block;padding:22px 48px 22px 0;
  font-size:17px;font-weight:600;color:var(--ink);background:transparent;border:0;
  line-height:1.6;transition:color .18s ease;
}
.faq-accordion .accordion-title::before{display:none !important;}
.faq-accordion .accordion-title::after{
  content:"＋";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  font-size:16px;color:var(--primary);font-weight:400;line-height:1;
}
.faq-accordion .accordion-item.is-active .accordion-title{color:var(--primary);}
.faq-accordion .accordion-item.is-active .accordion-title::after{content:"－";color:var(--accent);}
.faq-accordion .accordion-title:hover{color:var(--primary);}
.faq-accordion .accordion-content{
  padding:0 48px 24px 0 !important;background:transparent !important;border:0 !important;
  color:var(--muted);font-size:16px;line-height:1.9;
}
.faq-accordion .accordion-content p{margin-bottom:1em;}
.faq-accordion .accordion-content p:last-child{margin-bottom:0;}

/* ---------- Support cards ---------- */
.support-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.support-card{
  border:1px solid var(--line);border-radius:var(--r-card);background:#fff;
  padding:26px 24px;transition:box-shadow .18s ease,transform .18s ease;
}
.support-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.support-card .sc-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:8px;background:var(--primary-soft);color:var(--primary);
  font-size:16px;margin-bottom:16px;
}
.support-card h3{font-size:18px;margin-bottom:10px;}
.support-card p{font-size:15px;color:var(--muted);line-height:1.8;margin-bottom:14px;}
.support-card .sc-meta{font-size:14px;color:var(--muted);padding-top:14px;border-top:1px dashed var(--line);}

/* ---------- CTA band ---------- */
.cta-band{background:var(--dark);padding:64px 0;}
.cta-inner{
  border:1px solid rgba(255,255,255,.14);border-radius:var(--r-card);
  padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:rgba(255,255,255,.03);
}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.4vw,28px);margin-bottom:10px;}
.cta-inner p{color:rgba(255,255,255,.7);font-size:16px;line-height:1.8;margin:0;max-width:620px;}
.cta-inner .btn{flex-shrink:0;}

/* ---------- Prev / Next ---------- */
.page-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:56px 0 0;}
.page-nav-item{
  display:block;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;
  padding:22px 24px;transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.page-nav-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#cfd8d5;}
.page-nav-item.next{text-align:right;}
.pn-label{display:block;font-size:13px;color:var(--muted);letter-spacing:.08em;margin-bottom:8px;}
.pn-title{display:block;font-size:17px;font-weight:600;color:var(--ink);}
.page-nav-item:hover .pn-title{color:var(--primary);}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-main{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.5);}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.58);margin:0;max-width:320px;}
.footer-col h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.62);text-underline-offset:3px;}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(255,255,255,.62);line-height:1.7;}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 26px;
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- Responsive ---------- */
@media screen and (max-width:1024px){
  .container{padding:0 24px;}
  .main-nav{display:none;}
  .menu-toggle{display:block;}
  .page-body{padding:56px 0 72px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .plan-grid{grid-template-columns:1fr;}
  .plan-card .btn{width:100%;}
  .pick-row{grid-template-columns:1fr;}
  .support-grid{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:36px 28px;}
  .toc{position:static;margin-bottom:40px;}
  .content-col{max-width:100%;}
}
@media screen and (max-width:640px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .header-inner{gap:12px;}
  .brand-main{font-size:18px;}
  .hero-inner{padding-top:44px;padding-bottom:44px;}
  .page-hero{min-height:300px;}
  .page-body{padding:44px 0 56px;}
  .content-block{padding-bottom:44px;margin-bottom:44px;}
  .block-head{margin-bottom:26px;}
  .cta-band{padding:48px 0;}
  .cta-inner{padding:30px 22px;}
  .cta-inner .btn{width:100%;}
  .page-nav{grid-template-columns:1fr;gap:14px;padding-top:40px;}
  .page-nav-item.next{text-align:left;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .plan-card{padding:26px 20px 22px;}
  .pick-row{padding:20px;gap:20px;}
  .support-card{padding:22px 20px;}
  .faq-accordion .accordion-title{padding:18px 40px 18px 0;font-size:16px;}
  .faq-accordion .accordion-content{padding:0 0 20px 0 !important;}
  /* table -> stacked cards */
  .compare-table thead{display:none;}
  .compare-table, .compare-table tbody, .compare-table tr, .compare-table td{display:block;width:100%;}
  .compare-table tbody tr{
    border-bottom:1px solid var(--line);padding:8px 18px;
  }
  .compare-table tbody tr:last-child{border-bottom:0;}
  .compare-table tbody td{
    display:flex;justify-content:space-between;gap:14px;
    padding:9px 0;border-bottom:1px dashed var(--line);text-align:right;
  }
  .compare-table tbody td:last-child{border-bottom:0;}
  .compare-table tbody td::before{
    content:attr(data-label);color:var(--muted);font-weight:400;font-size:14px;flex-shrink:0;text-align:left;
  }
  .compare-table tbody td:first-child{
    color:var(--ink);font-weight:700;font-size:16px;padding-top:14px;
  }
  .compare-table tbody td:first-child::before{content:"";display:none;}
}