/* roulang page: index */
:root{
  --c-ink:#0E1F1C;
  --c-brand:#12806A;
  --c-brand-deep:#0A4A40;
  --c-accent:#E0A32E;
  --c-accent-soft:#F6E3B8;
  --c-bg:#F7F4ED;
  --c-surface:#FFFFFF;
  --c-line:#E3DED2;
  --c-text:#16211F;
  --c-muted:#5E6E6A;
  --grad-brand:linear-gradient(135deg,#12806A 0%,#0A4A40 100%);
  --grad-accent:linear-gradient(120deg,#E0A32E 0%,#C97F1E 100%);
  --r-lg:24px;
  --r-md:16px;
  --r-pill:999px;
  --sh-1:0 2px 6px rgba(14,31,28,.05);
  --sh-2:0 14px 34px rgba(14,31,28,.10);
  --sh-3:0 22px 48px rgba(14,31,28,.16);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;border-radius:var(--r-md);}
a{color:var(--c-brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-brand-deep);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
.num{font-variant-numeric:tabular-nums;}

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

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,244,237,.95);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:var(--nav-h);transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--grad-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;box-shadow:var(--sh-1);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:19px;font-weight:800;color:var(--c-brand-deep);letter-spacing:-.01em;}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.14em;color:var(--c-muted);}
.main-nav{display:flex;align-items:center;gap:26px;}
.main-nav a{
  position:relative;font-size:15px;font-weight:500;color:var(--c-text);
  padding:6px 0;white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--c-brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.main-nav a:hover{color:var(--c-brand);}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1);}
.main-nav a.active{color:var(--c-brand);font-weight:600;}
.header-tools{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.search-toggle{
  width:38px;height:38px;border-radius:50%;
  border:1px solid var(--c-line);background:var(--c-surface);
  color:var(--c-text);display:flex;align-items:center;justify-content:center;
  transition:all .2s ease;
}
.search-toggle:hover{color:var(--c-brand);border-color:var(--c-brand);box-shadow:var(--sh-1);}
.search-bar{
  display:none;width:100%;margin:0 0 14px;
}
.search-bar.is-open{display:block;}
.search-bar input{
  width:100%;height:48px;border-radius:var(--r-md);
  border:1px solid var(--c-line);background:var(--c-surface);
  padding:0 16px;font-size:15px;color:var(--c-text);
}
.search-bar input:focus{outline:none;border-color:var(--c-brand);box-shadow:0 0 0 2px rgba(18,128,106,.18);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--c-line);background:var(--c-surface);
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;transition:all .2s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
  text-align:center;
}
.btn-primary{background:var(--grad-accent);color:#fff;box-shadow:0 8px 20px rgba(224,163,46,.28);}
.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:0 14px 30px rgba(224,163,46,.36);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(0);filter:brightness(.98);}
.btn-ghost{background:transparent;border-color:var(--c-line);color:var(--c-brand-deep);}
.btn-ghost:hover{background:var(--c-accent-soft);color:var(--c-brand-deep);transform:translateY(-1px);}
.btn-outline{background:transparent;border-color:var(--c-brand);color:var(--c-brand);}
.btn-outline:hover{background:rgba(18,128,106,.08);color:var(--c-brand-deep);}
.btn-sm{padding:9px 18px;font-size:14px;}
a:focus-visible,button:focus-visible,input:focus-visible,.btn:focus-visible{
  outline:2px solid var(--c-brand);outline-offset:2px;
}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:64px 0 92px;
  background:
    radial-gradient(circle at 88% 12%,rgba(18,128,106,.10),transparent 46%),
    radial-gradient(circle at 4% 84%,rgba(224,163,46,.10),transparent 44%),
    var(--c-bg);
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:auto -60px -80px auto;width:420px;height:420px;
  background-image:radial-gradient(rgba(18,128,106,.28) 1.5px,transparent 1.5px);
  background-size:22px 22px;opacity:.07;pointer-events:none;
}
.hero-grid{align-items:center;}
.hero-copy{padding-bottom:12px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--c-accent-soft);color:#8A5A0C;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  padding:5px 14px;border-radius:var(--r-pill);margin-bottom:20px;
}
.hero h1{
  font-size:clamp(30px,4.4vw,52px);line-height:1.18;font-weight:800;
  letter-spacing:-.01em;color:var(--c-ink);margin-bottom:18px;
}
.hero h1 .hl{
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:var(--c-brand);
}
.hero-sub{
  font-size:18px;line-height:1.8;color:var(--c-muted);
  max-width:560px;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px;}
.stat-badge{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-pill);padding:10px 18px;
  display:flex;align-items:baseline;gap:8px;
  box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;
}
.stat-badge:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.stat-badge b{
  font-size:24px;font-weight:800;color:var(--c-brand);line-height:1;
  font-variant-numeric:tabular-nums;
}
.stat-badge.amber b{color:var(--c-accent);}
.stat-badge span{font-size:13px;color:var(--c-muted);}
.hero-visual{position:relative;padding-bottom:26px;}
.hero-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-2);aspect-ratio:16/11;background:#E8E2D6;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;border-radius:var(--r-lg);}
.hero-floatcard{
  position:absolute;left:14px;bottom:0;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:14px 18px;box-shadow:var(--sh-2);min-width:190px;
}
.hero-floatcard strong{
  display:block;font-size:22px;font-weight:800;color:var(--c-brand-deep);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.hero-floatcard small{display:block;font-size:12.5px;color:var(--c-muted);margin-top:2px;}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--plain{background:var(--c-bg);}
.section--surface{background:var(--c-surface);}
.section--dark{background:var(--c-ink);color:rgba(255,255,255,.86);position:relative;}
.section--dark::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand);
}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap;}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.16em;
  color:var(--c-brand);text-transform:uppercase;margin-bottom:10px;
}
.section--dark .eyebrow{color:var(--c-accent);}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.35;
  color:var(--c-ink);padding-left:16px;position:relative;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;
  background:var(--grad-brand);border-radius:4px;
}
.section--dark .section-head h2{color:#fff;}
.section--dark .section-head h2::before{background:var(--grad-accent);}
.section-head p{font-size:15px;color:var(--c-muted);max-width:520px;margin-top:12px;}
.section--dark .section-head p{color:rgba(255,255,255,.68);}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-brand);
}
.link-more i{transition:transform .2s ease;}
.link-more:hover i{transform:translateX(4px);}

/* ============ 卖点：一大两小 ============ */
.feature-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:24px;}
.feature-grid .feat-large{grid-row:span 2;}
.feat-card{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:34px 32px;box-shadow:var(--sh-1);
  overflow:hidden;transition:transform .24s ease,box-shadow .24s ease;
}
.feat-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand);
}
.feat-large::before{background:var(--grad-accent);}
.feat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.feat-card:hover h3{color:var(--c-brand);}
.feat-num{
  font-size:13px;font-weight:800;letter-spacing:.16em;color:var(--c-accent);
  font-variant-numeric:tabular-nums;margin-bottom:18px;display:block;
}
.feat-icon{
  width:52px;height:52px;border-radius:16px;background:rgba(18,128,106,.10);
  color:var(--c-brand);display:flex;align-items:center;justify-content:center;
  font-size:21px;margin-bottom:20px;
}
.feat-large .feat-icon{background:rgba(224,163,46,.16);color:#A8701A;}
.feat-card h3{font-size:21px;font-weight:600;margin-bottom:12px;color:var(--c-ink);transition:color .2s ease;}
.feat-large h3{font-size:25px;}
.feat-card p{font-size:15px;line-height:1.85;color:var(--c-muted);}
.feat-large p{font-size:16px;max-width:460px;}

/* ============ 工艺时间轴 ============ */
.demo-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:52px;align-items:center;}
.steps{position:relative;padding-left:34px;}
.steps::before{
  content:"";position:absolute;left:11px;top:10px;bottom:14px;width:1px;background:var(--c-line);
}
.step{position:relative;padding-bottom:30px;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:-28px;top:8px;width:12px;height:12px;border-radius:50%;
  background:var(--c-brand);box-shadow:0 0 0 4px rgba(18,128,106,.14);
}
.step h3{font-size:18px;font-weight:600;color:var(--c-ink);margin-bottom:6px;}
.step p{font-size:15px;color:var(--c-muted);line-height:1.8;}
.demo-figure{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);background:#E8E2D6;}
.demo-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);}
.demo-caption{
  font-size:13px;color:var(--c-muted);margin-top:12px;text-align:center;
}

/* ============ 证据区 ============ */
.evidence-stats{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:44px;}
.evidence-stats .stat-badge{
  background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.14);box-shadow:none;
}
.evidence-stats .stat-badge b{color:var(--c-accent);}
.evidence-stats .stat-badge span{color:rgba(255,255,255,.66);}
.evidence-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;align-items:start;}
.evidence-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-lg);padding:28px;transition:transform .24s ease,border-color .24s ease,background .24s ease;
}
.evidence-card:hover{transform:translateY(-4px);border-color:rgba(224,163,46,.5);background:rgba(255,255,255,.08);}
.evidence-card img{width:100%;aspect-ratio:16/10;object-fit:cover;margin-bottom:20px;}
.evidence-card.tall{padding-bottom:40px;}
.evidence-card h3{font-size:20px;font-weight:600;color:#fff;margin-bottom:10px;}
.evidence-card p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.7);margin-bottom:16px;}
.evidence-card .link-more{color:var(--c-accent);}
.evidence-card .link-more:hover{color:#fff;}

/* ============ 方案区 ============ */
.plan-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:24px;}
.plan-col{display:grid;gap:24px;align-content:start;}
.plan-card{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease;
}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.plan-card.is-featured{border-top:4px solid transparent;border-image:var(--grad-accent) 1;padding-top:36px;}
.plan-badge{
  position:absolute;top:-13px;right:24px;
  background:var(--grad-accent);color:#fff;font-size:12px;font-weight:700;
  padding:5px 14px;border-radius:var(--r-pill);box-shadow:0 6px 16px rgba(224,163,46,.32);
}
.plan-card h3{font-size:20px;font-weight:700;color:var(--c-ink);margin-bottom:8px;}
.plan-price{
  display:flex;align-items:baseline;gap:8px;margin:14px 0 20px;
  font-variant-numeric:tabular-nums;
}
.plan-price b{font-size:42px;font-weight:800;line-height:1;color:var(--c-brand);}
.plan-card.is-featured .plan-price b{color:var(--c-accent);}
.plan-price span{font-size:14px;color:var(--c-muted);}
.plan-list{display:grid;gap:12px;margin-bottom:24px;}
.plan-list li{display:flex;gap:10px;font-size:14.5px;color:var(--c-muted);line-height:1.7;}
.plan-list i{color:var(--c-brand);font-size:13px;margin-top:6px;}
.plan-card .btn{width:100%;}

/* ============ 最新信息 ============ */
.posts-grid{margin-bottom:-24px;}
.post-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  height:100%;margin-bottom:24px;
  transition:transform .24s ease,box-shadow .24s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.post-card:hover h3{color:var(--c-brand);}
.post-media{aspect-ratio:16/10;overflow:hidden;background:#EFEAE0;}
.post-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .26s ease-out;}
.post-card:hover .post-media img{transform:scale(1.03);}
.post-body{padding:22px 22px 24px;}
.post-tag{
  display:inline-block;background:var(--c-accent-soft);color:#8A5A0C;
  font-size:11.5px;font-weight:600;padding:4px 10px;border-radius:var(--r-pill);margin-bottom:12px;
}
.post-card h3{
  font-size:18px;font-weight:600;line-height:1.5;color:var(--c-ink);margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.post-card p{
  font-size:14px;line-height:1.75;color:var(--c-muted);margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  display:flex;align-items:center;justify-content:space-between;
  border-top:1px solid var(--c-line);padding-top:14px;
}
.post-foot time{font-size:13px;color:var(--c-muted);font-variant-numeric:tabular-nums;}
.post-foot .read{font-size:13px;font-weight:600;color:var(--c-brand);display:inline-flex;align-items:center;gap:5px;}
.post-card:hover .read i{transform:translateX(4px);}
.post-foot .read i{transition:transform .2s ease;}
.posts-empty{
  text-align:center;padding:60px 20px;background:var(--c-surface);
  border:1px dashed var(--c-line);border-radius:var(--r-lg);
}
.posts-empty i{font-size:30px;color:var(--c-line);display:block;margin-bottom:16px;}
.posts-empty p{font-size:15px;color:var(--c-muted);}
.posts-empty small{display:block;font-size:13px;color:var(--c-muted);margin-top:6px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;
  transition:box-shadow .2s ease;
}
.faq-item.is-open{box-shadow:var(--sh-1);}
.faq-q{
  width:100%;background:none;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:18px;font-weight:600;color:var(--c-ink);
  font-family:inherit;
}
.faq-q i{font-size:15px;color:var(--c-brand);transition:transform .24s ease;flex-shrink:0;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .24s ease;
}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--c-muted);}

/* ============ 转化条 ============ */
.cta-band{
  position:relative;background:var(--c-ink);border-radius:var(--r-lg);
  padding:52px 48px;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand);
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;color:#fff;margin-bottom:10px;}
.cta-band p{font-size:15px;color:rgba(255,255,255,.72);max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-actions .btn-ghost{border-color:rgba(255,255,255,.28);color:#fff;}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-ink);color:rgba(255,255,255,.72);
  padding:72px 0 0;position:relative;margin-top:88px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand strong{font-size:18px;font-weight:800;color:#fff;letter-spacing:-.01em;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.02em;}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid rgba(255,255,255,.12);
  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,.7);}
.footer-bottom a:hover{color:#fff;text-decoration:underline;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;
  display:flex;align-items:center;gap:14px;
  background:var(--grad-accent);border-radius:var(--r-pill);
  padding:12px 24px;color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 16px 34px rgba(224,163,46,.34);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .28s ease,transform .28s ease,visibility .28s ease,box-shadow .2s ease;
}
.float-cta:hover{color:#fff;box-shadow:0 20px 44px rgba(224,163,46,.44);transform:translateY(-2px);}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta i{font-size:14px;}
.float-link{display:none;}

/* ============ 响应式 ============ */
@media screen and (max-width:1279px){
  .grid-container{max-width:1100px;}
}
@media screen and (max-width:1023px){
  .grid-container{padding-left:24px;padding-right:24px;}
  .section{padding:64px 0;}
  .hero{padding:48px 0 68px;}
  .hero-grid{flex-direction:column;}
  .hero-copy{margin-bottom:34px;}
  .hero-sub{font-size:16.5px;}
  .feature-grid{grid-template-columns:1fr;gap:20px;}
  .feature-grid .feat-large{grid-row:auto;}
  .demo-grid{grid-template-columns:1fr;gap:34px;}
  .plan-grid{grid-template-columns:1fr;}
  .evidence-grid{grid-template-columns:1fr;gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .main-nav{
    position:fixed;top:var(--nav-h);left:0;right:0;bottom:0;
    flex-direction:column;align-items:flex-start;gap:0;
    background:var(--c-bg);padding:16px 24px 40px;
    transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:opacity .24s ease,transform .24s ease,visibility .24s ease;
    overflow-y:auto;
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .main-nav a{
    width:100%;font-size:17px;padding:16px 4px;
    border-bottom:1px solid var(--c-line);
  }
  .main-nav a::after{display:none;}
  .main-nav a.active{color:var(--c-brand);}
  .nav-toggle{display:flex;}
  .search-toggle{display:none;}
}
@media screen and (max-width:639px){
  .grid-container{padding-left:20px;padding-right:20px;}
  .section{padding:44px 0;}
  .site-header{--nav-h:56px;}
  .header-inner{height:56px;}
  .site-header.is-scrolled .header-inner{height:56px;}
  .brand-text strong{font-size:17px;}
  .brand-text em{font-size:10px;}
  .brand-mark{width:34px;height:34px;border-radius:10px;font-size:15px;}
  .hero{padding:36px 0 56px;}
  .hero h1{font-size:29px;line-height:1.28;}
  .hero-sub{font-size:15.5px;margin-bottom:22px;}
  .hero-actions{gap:10px;margin-bottom:26px;}
  .hero-actions .btn{flex:1 1 auto;padding:12px 18px;}
  .hero-stats{gap:10px;}
  .stat-badge{padding:9px 14px;}
  .stat-badge b{font-size:20px;}
  .hero-floatcard{position:static;margin-top:16px;min-width:0;}
  .hero-visual{padding-bottom:0;}
  .section-head{margin-bottom:30px;}
  .section-head h2{font-size:23px;}
  .feat-card{padding:26px 22px;}
  .feat-card h3{font-size:19px;}
  .feat-large h3{font-size:21px;}
  .evidence-card{padding:22px;}
  .plan-card{padding:26px 22px;}
  .plan-price b{font-size:36px;}
  .cta-band{padding:34px 24px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .site-footer{padding-top:52px;margin-top:56px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  body{padding-bottom:76px;}
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;
    justify-content:space-between;padding:0 20px;height:60px;
    transform:translateY(100%);
  }
  .float-cta.is-visible{transform:translateY(0);}
  .float-cta .btn{
    background:none;border:0;box-shadow:none;color:#fff;
    padding:0;font-size:15px;font-weight:700;
  }
  .float-cta .btn:hover{transform:none;box-shadow:none;}
  .float-link{display:inline-flex;color:rgba(255,255,255,.86);font-size:13.5px;}
  .float-link:hover{color:#fff;}
}

/* roulang page: article */
:root{
  --c-ink:#0E1F1C;
  --c-brand:#12806A;
  --c-brand-deep:#0A4A40;
  --c-accent:#E0A32E;
  --c-accent-deep:#C97F1E;
  --c-accent-soft:#F6E3B8;
  --c-bg:#F7F4ED;
  --c-surface:#FFFFFF;
  --c-line:#E3DED2;
  --c-text:#16211F;
  --c-muted:#5E6E6A;
  --grad-brand:linear-gradient(135deg,#12806A 0%,#0A4A40 100%);
  --grad-accent:linear-gradient(120deg,#E0A32E 0%,#C97F1E 100%);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 2px 6px rgba(14,31,28,.05);
  --sh-2:0 14px 34px rgba(14,31,28,.10);
  --sh-3:0 22px 48px rgba(14,31,28,.16);
  --header-h:68px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-md);}
a{color:var(--c-brand);text-decoration:none;transition:color .22s ease,background-color .22s ease,border-color .22s ease;}
a:hover{color:var(--c-brand-deep);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--c-text);letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:6px;}
.grid-container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%;}
@media screen and (min-width:1280px){.grid-container{max-width:1240px;}}

/* ---------- 顶部阅读进度 ---------- */
.read-progress{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:var(--grad-brand);
  z-index:1200;transition:width .12s linear;
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(247,244,237,.96);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease,height .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;height:var(--header-h);
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:42px;height:42px;border-radius:14px;
  background:var(--grad-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:18px;
  box-shadow:var(--sh-1);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:19px;font-weight:800;color:var(--c-brand-deep);letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.16em;color:var(--c-muted);}
.main-nav{display:flex;align-items:center;gap:26px;}
.main-nav a{
  position:relative;font-size:15px;font-weight:500;color:var(--c-text);
  padding:6px 0;white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--c-brand);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.main-nav a:hover{color:var(--c-brand);}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1);}
.main-nav a.active{color:var(--c-brand);font-weight:600;}
.header-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.search-toggle{
  width:42px;height:42px;border-radius:50%;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-brand);cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:all .22s ease;
}
.search-toggle:hover{background:var(--c-accent-soft);border-color:var(--c-accent);}
.search-bar{
  display:none;padding:0 0 14px;
}
.search-bar.is-open{display:block;}
.search-bar input{
  width:100%;height:48px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:var(--c-surface);
  padding:0 22px;font-size:15px;color:var(--c-text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-bar input:focus{outline:none;border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(18,128,106,.15);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);
  background:var(--c-surface);cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-brand-deep);border-radius:2px;transition:all .2s ease;}
.show-for-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);padding:12px 24px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .22s ease;
  white-space:nowrap;line-height:1.4;
}
.btn-primary{background:var(--grad-accent);color:#fff;box-shadow:0 6px 16px rgba(224,163,46,.28);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 12px 26px rgba(224,163,46,.34);color:#fff;}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--c-line);color:var(--c-brand);}
.btn-ghost:hover{background:var(--c-accent-soft);border-color:var(--c-accent);color:var(--c-brand-deep);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-lg{padding:15px 32px;font-size:16px;}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--c-brand);}
.btn-link i{transition:transform .22s ease;}
.btn-link:hover i{transform:translateX(4px);}

/* ---------- 面包屑 ---------- */
.crumb-wrap{border-bottom:1px solid var(--c-line);background:var(--c-surface);}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--c-muted);padding:16px 0;
}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-brand);}
.breadcrumb .sep{color:#BFC7C2;}
.breadcrumb .current{color:var(--c-text);font-weight:600;}

/* ---------- 文章首屏 ---------- */
.article-hero{padding:48px 0 40px;}
.article-hero-inner{max-width:820px;}
.tag-pill{
  display:inline-block;background:var(--c-accent-soft);color:var(--c-accent-deep);
  font-size:12px;font-weight:600;border-radius:var(--r-pill);padding:5px 14px;
  letter-spacing:.02em;
}
.article-hero h1{
  font-size:clamp(28px,3.6vw,44px);line-height:1.22;font-weight:800;
  margin:18px 0 0;letter-spacing:-.015em;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  margin-top:18px;font-size:13.5px;color:var(--c-muted);
  font-variant-numeric:tabular-nums;
}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--c-brand);font-size:13px;}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C9D2CD;}

/* ---------- 正文布局 ---------- */
.article-main{padding:8px 0 96px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 316px;gap:56px;align-items:start;}
.article-panel{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:48px 52px;
  position:relative;overflow:hidden;
}
.article-panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand);
}
.article-body{font-size:16px;line-height:1.9;color:var(--c-text);}
.article-body>*+*{margin-top:1.15em;}
.article-body h2{
  position:relative;font-size:29px;font-weight:700;line-height:1.35;
  margin-top:44px;margin-bottom:18px;padding-left:18px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;width:4px;height:1.1em;
  border-radius:2px;background:var(--c-brand);
}
.article-body h3{font-size:21px;font-weight:600;margin-top:32px;margin-bottom:12px;}
.article-body h4{font-size:18px;font-weight:600;margin-top:24px;margin-bottom:10px;}
.article-body p{margin:0;}
.article-body strong{color:var(--c-brand-deep);}
.article-body a{border-bottom:1px solid rgba(18,128,106,.35);}
.article-body a:hover{color:var(--c-brand-deep);border-bottom-color:var(--c-brand-deep);}
.article-body ul,.article-body ol{padding-left:4px;}
.article-body ul li,.article-body ol li{position:relative;padding-left:26px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:6px;top:.72em;width:6px;height:6px;
  background:var(--c-brand);border-radius:1.5px;
}
.article-body ol{counter-reset:art-ol;}
.article-body ol li{counter-increment:art-ol;}
.article-body ol li::before{
  content:counter(art-ol);
  position:absolute;left:0;top:.18em;width:20px;text-align:center;
  font-size:13px;font-weight:700;color:var(--c-brand);
  font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:26px 0;padding:20px 24px;background:var(--c-bg);
  border-left:3px solid var(--c-accent);border-radius:var(--r-md);
  color:#3A4744;font-size:15.5px;
}
.article-body blockquote p{margin:0;}
.article-body img{margin:26px auto;border-radius:var(--r-md);}
.article-body figure{margin:26px 0;}
.article-body figcaption{
  text-align:center;font-size:13px;color:var(--c-muted);margin-top:10px;
}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;margin:26px 0;
  border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;
  font-size:15px;
}
.article-body thead th{
  background:#EDF3F0;color:var(--c-brand-deep);font-weight:600;
  text-align:left;padding:13px 16px;font-size:14.5px;
}
.article-body tbody td{
  padding:13px 16px;border-top:1px solid var(--c-line);
  font-variant-numeric:tabular-nums;
}
.article-body tbody tr:nth-child(even){background:#FBFAF6;}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:13.5px;background:var(--c-accent-soft);color:#7A5410;
  border-radius:var(--r-pill);padding:3px 10px;
}
.article-body hr{border:none;border-top:1px solid var(--c-line);margin:36px 0;}

/* 空状态 */
.article-empty{text-align:center;padding:56px 20px;}
.article-empty i{font-size:44px;color:var(--c-brand);opacity:.55;}
.article-empty h2{font-size:26px;margin:20px 0 10px;}
.article-empty p{color:var(--c-muted);margin-bottom:26px;}

/* ---------- 侧栏 ---------- */
.article-aside{position:sticky;top:calc(var(--header-h) + 24px);display:flex;flex-direction:column;gap:22px;}
.aside-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-1);
}
.aside-card h3{
  font-size:16px;font-weight:700;display:flex;align-items:center;gap:9px;
  padding-bottom:14px;border-bottom:1px solid var(--c-line);margin-bottom:14px;
}
.aside-card h3 i{color:var(--c-accent);}
.aside-list li+li{margin-top:4px;}
.aside-list a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  font-size:14.5px;color:var(--c-text);padding:9px 10px;border-radius:10px;
  transition:all .2s ease;
}
.aside-list a:hover{background:var(--c-bg);color:var(--c-brand);padding-left:14px;}
.aside-list a i{font-size:11px;color:var(--c-accent);}
.aside-note{
  background:var(--grad-brand);color:rgba(255,255,255,.92);
  border-radius:var(--r-md);padding:24px;box-shadow:var(--sh-2);
}
.aside-note h3{color:#fff;border-bottom:1px solid rgba(255,255,255,.2);}
.aside-note h3 i{color:var(--c-accent-soft);}
.aside-note p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.82);margin-bottom:16px;}
.aside-note .btn-primary{width:100%;}

/* ---------- 文末区 ---------- */
.article-foot{
  margin-top:44px;padding-top:28px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
}
.article-tags{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.article-tags .label{font-size:13px;color:var(--c-muted);margin-right:4px;}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 96px;}
.section-head{margin-bottom:34px;max-width:720px;}
.section-head h2{
  position:relative;font-size:30px;font-weight:700;padding-left:18px;line-height:1.3;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.24em;width:4px;height:1em;
  border-radius:2px;background:var(--c-brand);
}
.section-head p{margin-top:12px;color:var(--c-muted);font-size:15px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;}
.post-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .26s ease,box-shadow .26s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);}
.post-thumb{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--c-bg);}
.post-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .26s ease-out;}
.post-card:hover .post-thumb img{transform:scale(1.03);}
.post-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1;}
.post-cat{
  align-self:flex-start;background:var(--c-accent-soft);color:var(--c-accent-deep);
  font-size:11.5px;font-weight:600;border-radius:var(--r-pill);padding:4px 10px;
}
.post-body h3{
  font-size:18px;font-weight:600;line-height:1.5;margin:12px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .22s ease;
}
.post-card:hover .post-body h3{color:var(--c-brand);}
.post-body p{
  font-size:14.5px;line-height:1.75;color:var(--c-muted);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
  flex:1;
}
.post-meta{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin-top:18px;padding-top:16px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-muted);font-variant-numeric:tabular-nums;
}
.post-meta .go{color:var(--c-brand);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.post-meta .go i{transition:transform .22s ease;}
.post-card:hover .post-meta .go i{transform:translateX(4px);}

/* ---------- CTA 转化条 ---------- */
.cta-band{padding:0 0 104px;}
.cta-inner{
  background:var(--c-ink);border-radius:var(--r-lg);padding:52px 56px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  position:relative;overflow:hidden;
}
.cta-inner::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand);
}
.cta-inner::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:320px;height:320px;
  border-radius:50%;background:radial-gradient(circle,rgba(224,163,46,.22) 0%,rgba(224,163,46,0) 68%);
}
.cta-text{position:relative;z-index:1;max-width:640px;}
.cta-text h2{color:#fff;font-size:30px;font-weight:700;line-height:1.35;}
.cta-text p{color:rgba(255,255,255,.76);margin-top:14px;font-size:15.5px;line-height:1.8;}
.cta-actions{position:relative;z-index:1;display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}
.cta-actions .btn-ghost{border-color:rgba(255,255,255,.32);color:#fff;}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.6);color:#fff;}

/* ---------- 浮动 CTA & 移动条 ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:900;
  display:inline-flex;align-items:center;gap:9px;
  background:var(--grad-accent);color:#fff;font-weight:600;font-size:15px;
  padding:14px 24px;border-radius:var(--r-pill);
  box-shadow:0 14px 30px rgba(224,163,46,.34);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:all .28s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{color:#fff;filter:brightness(1.06);transform:translateY(-2px);}
.mobile-bar{display:none;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-ink);color:rgba(255,255,255,.72);
  border-top:4px solid transparent;
  border-image:var(--grad-brand) 1;
  padding:72px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:32px;
  padding-bottom:52px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand strong{color:#fff;font-size:18px;font-weight:800;letter-spacing:.01em;}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:330px;}
.footer-col h4{
  color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;
  padding-bottom:12px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-col ul li+li{margin-top:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 28px;font-size:13px;
}
.footer-bottom a{color:rgba(255,255,255,.72);}
.footer-bottom a:hover{color:#fff;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .grid-container{padding:0 24px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px;}
  .article-aside{position:static;}
  .article-panel{padding:34px 28px;}
  .article-hero{padding:34px 0 28px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 28px;}
  .main-nav{
    position:fixed;top:var(--header-h);left:0;right:0;bottom:0;
    background:var(--c-bg);flex-direction:column;align-items:stretch;
    gap:0;padding:24px 24px 40px;
    transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:all .26s ease;overflow-y:auto;
  }
  .main-nav.is-open{transform:translateY(0);opacity:1;visibility:visible;}
  .main-nav a{
    font-size:17px;padding:16px 4px;border-bottom:1px solid var(--c-line);border-radius:0;
  }
  .main-nav a::after{display:none;}
  .main-nav a.active{color:var(--c-brand);}
  .nav-toggle{display:flex;}
  .header-tools .btn-sm{display:none;}
}
@media screen and (max-width:639px){
  .grid-container{padding:0 20px;}
  .brand-text strong{font-size:17px;}
  .brand-mark{width:38px;height:38px;border-radius:12px;font-size:16px;}
  .article-panel{padding:26px 20px;border-radius:var(--r-md);}
  .article-body{font-size:15.5px;line-height:1.85;}
  .article-body h2{font-size:23px;margin-top:34px;}
  .article-body h3{font-size:19px;}
  .article-body table{font-size:14px;}
  .article-body thead th,.article-body tbody td{padding:11px 12px;}
  .article-hero h1{font-size:26px;}
  .section-head h2{font-size:24px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .cta-inner{padding:32px 22px;}
  .cta-text h2{font-size:23px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-col p{max-width:none;}
  .float-cta{display:none;}
  .mobile-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:950;
    height:56px;padding:0 16px;gap:12px;align-items:center;
    background:rgba(247,244,237,.97);border-top:1px solid var(--c-line);
    box-shadow:0 -6px 18px rgba(14,31,28,.07);
  }
  .mobile-bar .btn{flex:1;}
  .mobile-bar-link{font-size:14px;font-weight:600;color:var(--c-brand);white-space:nowrap;}
  body{padding-bottom:64px;}
  .site-footer{padding-bottom:8px;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --c-ink:#0E1F1C;
  --c-brand:#12806A;
  --c-brand-deep:#0A4A40;
  --c-accent:#E0A32E;
  --c-accent-deep:#C97F1E;
  --c-accent-soft:#F6E3B8;
  --c-bg:#F7F4ED;
  --c-surface:#FFFFFF;
  --c-surface-soft:#EFF4F1;
  --c-line:#E3DED2;
  --c-text:#16211F;
  --c-muted:#5E6E6A;
  --grad-brand:linear-gradient(135deg,#12806A 0%,#0A4A40 100%);
  --grad-accent:linear-gradient(120deg,#E0A32E 0%,#C97F1E 100%);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 2px 6px rgba(14,31,28,.05);
  --sh-2:0 14px 34px rgba(14,31,28,.10);
  --sh-3:0 22px 48px rgba(14,31,28,.16);
  --nav-h:68px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background-color:var(--c-bg);
  background-image:radial-gradient(rgba(18,128,106,.06) 1px, transparent 1px);
  background-size:26px 26px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:0;}
a{color:var(--c-brand);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--c-brand-deep);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:4px;}
::selection{background:var(--c-accent-soft);color:var(--c-ink);}

/* ============ Foundation 覆盖 ============ */
.grid-container{
  max-width:1200px;
  padding-left:32px;
  padding-right:32px;
}
.grid-container.full{padding-left:0;padding-right:0;}
.button{background:transparent;color:var(--c-brand);}
input[type="search"],input[type="text"],input[type="email"],textarea{
  box-shadow:none;
  border-radius:var(--r-md);
}
@media screen and (min-width:1280px){
  .grid-container{max-width:1240px;}
}
@media screen and (max-width:639px){
  .grid-container{padding-left:20px;padding-right:20px;}
}

/* ============ 通用元素 ============ */
.section{padding:88px 0;}
.section-sm{padding:64px 0;}
.section-tight{padding-top:40px;}
.section-alt{background:var(--c-surface-soft);}

.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{
  position:relative;
  padding-left:18px;
  font-size:clamp(24px,3vw,32px);
  font-weight:700;
  line-height:1.35;
  letter-spacing:-0.01em;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:.22em;
  width:4px;height:1em;
  border-radius:2px;
  background:var(--c-brand);
}
.section-head.center h2{padding-left:0;}
.section-head.center h2::before{
  position:static;
  display:block;
  width:44px;height:4px;
  margin:0 auto 18px;
}
.section-head p{margin-top:14px;color:var(--c-muted);font-size:16px;line-height:1.85;}

.tag{
  display:inline-block;
  padding:4px 12px;
  border-radius:var(--r-pill);
  background:var(--c-accent-soft);
  color:#8A5A0B;
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  line-height:1.6;
}
.tag-line{background:rgba(18,128,106,.1);color:var(--c-brand-deep);}
.tag-dark{background:rgba(224,163,46,.18);color:#F3D08B;}

.badge-row{display:flex;flex-wrap:wrap;gap:14px;}
.badge{
  display:flex;
  align-items:baseline;
  gap:8px;
  padding:10px 18px;
  border-radius:var(--r-pill);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.badge:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.badge b{
  font-size:24px;
  font-weight:800;
  color:var(--c-brand-deep);
  font-variant-numeric:tabular-nums;
  line-height:1;
}
.badge span{font-size:13px;color:var(--c-muted);}
.badge.is-accent{background:var(--c-accent-soft);border-color:rgba(224,163,46,.35);}
.badge.is-accent b{color:var(--c-accent-deep);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  min-height:46px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn i{font-size:14px;}
.btn-primary{
  background-image:var(--grad-accent);
  color:#fff;
  box-shadow:0 8px 20px rgba(201,127,30,.24);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 14px 30px rgba(201,127,30,.3);color:#fff;}
.btn-primary:active{transform:translateY(0);filter:brightness(.98);}
.btn-outline{
  background:transparent;
  border-color:var(--c-line);
  color:var(--c-brand);
}
.btn-outline:hover{background:var(--c-accent-soft);border-color:rgba(224,163,46,.5);color:var(--c-brand-deep);transform:translateY(-1px);}
.btn-ghost-light{
  background:rgba(255,255,255,.08);
  border-color:rgba(255,255,255,.28);
  color:#F7F4ED;
}
.btn-ghost-light:hover{background:rgba(255,255,255,.16);color:#fff;transform:translateY(-1px);}
.btn-sm{padding:9px 18px;min-height:40px;font-size:14px;}
.btn-block{width:100%;}
.link-cta{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--c-brand);
}
.link-cta i{transition:transform .2s ease;font-size:12px;}
.link-cta:hover i{transform:translateX(4px);}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,244,237,.97);
  backdrop-filter:blur(10px);
  transition:box-shadow .25s ease;
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--grad-brand);
  opacity:.45;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:var(--nav-h);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--c-text);}
.brand-mark{
  width:38px;height:38px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background-image:var(--grad-brand);
  color:#fff;
  font-size:16px;
  box-shadow:0 6px 16px rgba(10,74,64,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.05;}
.brand-text strong{font-size:19px;font-weight:800;letter-spacing:.02em;color:var(--c-brand-deep);}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.22em;color:var(--c-muted);margin-top:3px;}
.brand:hover .brand-text strong{color:var(--c-brand);}

.main-nav{display:flex;align-items:center;gap:26px;flex:1 1 auto;}
.main-nav a{
  position:relative;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:var(--c-text);
  white-space:nowrap;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--c-brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s ease;
}
.main-nav a:hover{color:var(--c-brand);}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1);}
.main-nav a.active{color:var(--c-brand-deep);font-weight:600;}

.header-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.search-toggle{
  width:42px;height:42px;
  border-radius:50%;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  color:var(--c-brand-deep);
  cursor:pointer;
  transition:background-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.search-toggle:hover{background:var(--c-accent-soft);transform:translateY(-1px);box-shadow:var(--sh-1);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--c-line);
  border-radius:12px;
  background:var(--c-surface);
  cursor:pointer;
  padding:0;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-brand-deep);transition:transform .24s ease,opacity .24s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.search-bar{
  max-height:0;
  overflow:hidden;
  opacity:0;
  transition:max-height .3s ease,opacity .3s ease;
}
.search-bar.is-open{max-height:110px;opacity:1;padding-bottom:18px;}
.search-bar input{
  width:100%;
  height:48px;
  margin:0;
  padding:0 18px;
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  background:var(--c-surface);
  font-size:15px;
  color:var(--c-text);
}
.search-bar input:focus{border-color:var(--c-brand);box-shadow:0 0 0 2px rgba(18,128,106,.25);background:#fff;}

/* ============ 面包屑与页头 ============ */
.page-head{padding:44px 0 12px;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);flex-wrap:wrap;}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-brand);}
.crumb-sep{color:#BFB8A8;}
.crumb-current{color:var(--c-brand-deep);font-weight:600;}

.page-head h1{
  margin-top:18px;
  font-size:clamp(30px,4.4vw,48px);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-0.01em;
  color:var(--c-ink);
  max-width:900px;
}
.page-head .lead{
  margin-top:16px;
  max-width:760px;
  font-size:17px;
  line-height:1.85;
  color:var(--c-muted);
}
.page-head .tag{margin-top:6px;}

/* ============ 分栏布局 ============ */
.layout-split{margin-top:48px;}
.content-col{max-width:800px;}

/* ============ 长文排版 ============ */
.article-body h2{
  position:relative;
  padding-left:18px;
  margin-top:52px;
  margin-bottom:18px;
  font-size:clamp(22px,2.6vw,28px);
  font-weight:700;
  line-height:1.4;
  color:var(--c-ink);
}
.article-body h2:first-child{margin-top:0;}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.24em;
  width:4px;height:1em;
  border-radius:2px;
  background:var(--c-brand);
}
.article-body h3{
  margin-top:30px;
  margin-bottom:12px;
  font-size:20px;
  font-weight:600;
  color:var(--c-brand-deep);
}
.article-body p{margin-bottom:16px;color:var(--c-text);}
.article-body strong{color:var(--c-brand-deep);}
.article-body .note{
  margin:26px 0;
  padding:20px 22px;
  border-left:3px solid var(--c-accent);
  border-radius:var(--r-md);
  background:rgba(246,227,184,.32);
  color:#4C3A12;
  font-size:15px;
}
.article-body .note b{color:#8A5A0B;}

.check-list{list-style:none;margin:8px 0 22px;padding:0;}
.check-list li{
  position:relative;
  padding-left:24px;
  margin-bottom:12px;
  color:var(--c-text);
  font-size:16px;
  line-height:1.8;
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:.62em;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--c-brand);
}

/* ============ 步骤带 ============ */
.steps{list-style:none;margin:10px 0 26px;padding:0;}
.steps li{
  position:relative;
  padding:0 0 26px 48px;
}
.steps li:last-child{padding-bottom:0;}
.steps li::before{
  counter-increment:step;
  content:counter(step,decimal-leading-zero);
  position:absolute;
  left:0;top:0;
  width:30px;height:30px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  background-image:var(--grad-accent);
  color:#fff;
  font-size:12px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
}
.steps li::after{
  content:"";
  position:absolute;
  left:14.5px;top:34px;bottom:4px;
  width:1px;
  background:var(--c-line);
}
.steps li:last-child::after{display:none;}
.steps{list-style:none;counter-reset:step;}
.steps strong{display:block;font-size:16px;font-weight:600;color:var(--c-ink);margin-bottom:4px;}
.steps span{display:block;font-size:15px;color:var(--c-muted);line-height:1.8;}

/* ============ 表格 ============ */
.table-wrap{overflow-x:auto;margin:22px 0;border-radius:var(--r-md);}
.data-table{
  width:100%;
  min-width:560px;
  border-collapse:separate;
  border-spacing:0;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  overflow:hidden;
  font-size:15px;
}
.data-table thead th{
  background:#E6F0EC;
  color:var(--c-brand-deep);
  font-size:14px;
  font-weight:700;
  text-align:left;
  padding:14px 16px;
  white-space:nowrap;
}
.data-table tbody td{
  padding:13px 16px;
  border-top:1px solid var(--c-line);
  color:var(--c-text);
  vertical-align:top;
}
.data-table tbody tr:nth-child(even) td{background:#FBF9F4;}
.data-table b{font-variant-numeric:tabular-nums;color:var(--c-accent-deep);}
.table-caption{margin-top:10px;font-size:13px;color:var(--c-muted);}

/* ============ 参数卡 ============ */
.aside-col{position:relative;}
.param-card{
  position:sticky;
  top:96px;
  padding:26px 24px;
  border-radius:var(--r-lg);
  background:var(--c-bg);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
}
.param-card::before{
  content:"";
  position:absolute;
  left:24px;right:24px;top:0;
  height:4px;
  border-radius:0 0 4px 4px;
  background:var(--grad-brand);
}
.param-card h3{
  margin:12px 0 8px;
  font-size:20px;
  font-weight:700;
  color:var(--c-ink);
}
.param-card .param-desc{font-size:14px;color:var(--c-muted);line-height:1.75;margin-bottom:16px;}
.param-list{list-style:none;margin:0 0 20px;padding:0;}
.param-list li{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  padding:11px 0;
  border-bottom:1px dashed var(--c-line);
  font-size:14px;
}
.param-list li:last-child{border-bottom:0;}
.param-list span{color:var(--c-muted);}
.param-list b{
  font-size:15px;
  font-weight:700;
  color:var(--c-brand-deep);
  font-variant-numeric:tabular-nums;
  white-space:nowrap;
}
.param-foot{font-size:13px;color:var(--c-muted);margin-top:14px;line-height:1.7;}

/* ============ 横向图文卡 ============ */
.media-row{margin-top:48px;}
.media-card{
  display:flex;
  gap:0;
  height:100%;
  border-radius:var(--r-lg);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .26s ease,box-shadow .26s ease;
}
.media-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);}
.media-thumb{
  flex:0 0 44%;
  overflow:hidden;
  background:var(--c-surface-soft);
}
.media-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .26s ease-out;
}
.media-card:hover .media-thumb img{transform:scale(1.03);}
.media-body{padding:24px 22px;display:flex;flex-direction:column;gap:10px;}
.media-body h3{font-size:19px;font-weight:700;color:var(--c-ink);line-height:1.45;}
.media-body p{font-size:15px;color:var(--c-muted);line-height:1.8;}
.media-body .link-cta{margin-top:auto;}

/* ============ 信息带 ============ */
.info-band{
  margin-top:40px;
  padding:30px 28px;
  border-radius:var(--r-lg);
  background:var(--c-ink);
  color:rgba(255,255,255,.86);
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.info-band .info-item{display:flex;gap:14px;}
.info-band i{
  flex:0 0 auto;
  width:40px;height:40px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:rgba(18,128,106,.35);
  color:#9FE3D2;
  font-size:16px;
}
.info-band h4{font-size:16px;font-weight:700;color:#fff;margin-bottom:6px;}
.info-band p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);}

/* ============ FAQ ============ */
.faq-list{max-width:860px;margin:0 auto;}
.faq-item{
  border-bottom:1px solid var(--c-line);
}
.faq-item:first-child{border-top:1px solid var(--c-line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 4px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:18px;
  font-weight:600;
  color:var(--c-ink);
  cursor:pointer;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--c-brand);}
.faq-icon{
  flex:0 0 auto;
  width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid var(--c-line);
  color:var(--c-brand);
  font-size:12px;
  transition:transform .24s ease,background-color .24s ease,color .24s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background-image:var(--grad-brand);color:#fff;border-color:transparent;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .28s ease;
}
.faq-item.is-open .faq-a{max-height:400px;}
.faq-a-inner{
  padding:0 4px 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-muted);
  max-width:760px;
}

/* ============ 转化条 ============ */
.cta-band{padding:24px 0 96px;}
.cta-card{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  background:var(--c-ink);
  padding:52px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
}
.cta-card::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:4px;
  background:var(--grad-brand);
}
.cta-card::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;
  background-position:center right;
  opacity:.14;
  pointer-events:none;
}
.cta-copy{position:relative;z-index:2;max-width:640px;}
.cta-copy h2{
  margin:16px 0 12px;
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;
  line-height:1.4;
  color:#fff;
}
.cta-copy p{font-size:15px;color:rgba(255,255,255,.72);line-height:1.8;}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-ink);
  color:rgba(255,255,255,.72);
  position:relative;
  padding-top:4px;
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:4px;
  background:var(--grad-brand);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:32px;
  padding:64px 0 40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:34px;height:34px;font-size:14px;}
.footer-brand strong{font-size:17px;font-weight:800;color:#fff;letter-spacing:.02em;}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:320px;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{
  font-size:14px;
  color:rgba(255,255,255,.72);
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.footer-col a:hover{color:#fff;border-bottom-color:rgba(255,255,255,.6);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:22px 0 28px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.72);border-bottom:1px solid rgba(255,255,255,.24);}
.footer-bottom a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .section{padding:64px 0;}
  .section-sm{padding:48px 0;}
  .header-inner{height:60px;gap:16px;}
  .main-nav{
    position:fixed;
    left:0;right:0;top:60px;bottom:0;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:20px 20px 48px;
    background:var(--c-bg);
    border-radius:24px 24px 0 0;
    box-shadow:var(--sh-2);
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .24s ease,transform .24s ease,visibility .24s ease;
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:none;}
  .main-nav a{font-size:17px;padding:14px 16px;border-radius:14px;}
  .main-nav a::after{display:none;}
  .main-nav a:hover,.main-nav a.active{background:rgba(18,128,106,.08);}
  .nav-toggle{display:flex;}
  .search-toggle{display:none;}
  .param-card{position:static;top:auto;margin-top:36px;}
  .info-band{grid-template-columns:1fr;gap:22px;}
  .cta-card{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 32px;}
}
@media screen and (max-width:767px){
  .media-card{flex-direction:column;}
  .media-thumb{flex:0 0 auto;height:190px;}
  .page-head{padding:32px 0 8px;}
  .page-head .lead{font-size:16px;}
}
@media screen and (max-width:639px){
  .section{padding:44px 0;}
  .section-sm{padding:36px 0;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .brand-text strong{font-size:17px;}
  .brand-text em{font-size:10px;letter-spacing:.16em;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .faq-q{font-size:16px;padding:18px 2px;}
  .article-body h2{margin-top:40px;}
  .badge b{font-size:21px;}
}

/* roulang page: category2 */
:root{
  --c-ink:#0E1F1C;
  --c-brand:#12806A;
  --c-brand-deep:#0A4A40;
  --c-accent:#E0A32E;
  --c-accent-soft:#F6E3B8;
  --c-bg:#F7F4ED;
  --c-surface:#FFFFFF;
  --c-line:#E3DED2;
  --c-text:#16211F;
  --c-muted:#5E6E6A;
  --grad-brand:linear-gradient(135deg,#12806A 0%,#0A4A40 100%);
  --grad-accent:linear-gradient(120deg,#E0A32E 0%,#C97F1E 100%);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --r-lg:24px;
  --r-md:16px;
  --r-pill:999px;
  --sh-1:0 2px 6px rgba(14,31,28,.05);
  --sh-2:0 14px 34px rgba(14,31,28,.10);
  --sh-3:0 22px 48px rgba(14,31,28,.16);
  --header-h:68px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;height:auto;display:block;border-style:none;}
a{color:var(--c-brand);text-decoration:none;transition:color .22s ease,background-color .22s ease,border-color .22s ease,opacity .22s ease;}
a:hover{color:var(--c-brand-deep);}
p{margin:0 0 1.15em;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-family:var(--font-sans);color:var(--c-text);line-height:1.3;}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.18;font-weight:800;letter-spacing:-.01em;}
h2{font-size:clamp(24px,2.9vw,32px);font-weight:700;}
h3{font-size:20px;font-weight:600;}
h4{font-size:16px;font-weight:600;}
button{font-family:inherit;}
input,textarea,select{font-family:inherit;font-size:16px;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;}
.grid-container{max-width:1200px;margin-left:auto;margin-right:auto;padding-left:32px;padding-right:32px;}
@media screen and (min-width:1280px){.grid-container{max-width:1240px;}}

/* ============ 按钮 / 标签 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-pill);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:transform .2s ease,box-shadow .24s ease,background-color .22s ease,color .22s ease,border-color .22s ease;
}
.btn-primary{background:var(--grad-accent);color:#fff;box-shadow:0 8px 20px rgba(201,127,30,.26);}
.btn-primary:hover,.btn-primary:focus{color:#fff;filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 14px 30px rgba(201,127,30,.32);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(201,127,30,.24);}
.btn-ghost{background:transparent;border-color:var(--c-line);color:var(--c-brand-deep);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--c-accent-soft);color:var(--c-brand-deep);border-color:var(--c-accent);}
.btn-on-dark{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;}
.btn-on-dark:hover,.btn-on-dark:focus{background:rgba(255,255,255,.12);color:#fff;}
.btn-sm{padding:9px 18px;font-size:14px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-brand);}
.link-arrow i{transition:transform .22s ease;}
.link-arrow:hover i{transform:translateX(4px);}
.tag{
  display:inline-block;padding:4px 10px;border-radius:var(--r-pill);
  background:var(--c-accent-soft);color:#8A5A10;font-size:12px;font-weight:600;line-height:1.6;
}
.tag-brand{background:rgba(18,128,106,.12);color:var(--c-brand-deep);}
.badge-row{display:flex;flex-wrap:wrap;gap:14px;}
.stat-badge{
  display:flex;align-items:center;gap:12px;padding:12px 20px;border-radius:var(--r-pill);
  background:var(--c-surface);border:1px solid var(--c-line);box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .24s ease;
}
.stat-badge:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.stat-badge b{font-size:24px;font-weight:800;color:var(--c-brand);font-variant-numeric:tabular-nums;line-height:1;}
.stat-badge span{font-size:13px;color:var(--c-muted);}
.stat-badge.is-accent{background:var(--c-accent-soft);border-color:#EBD3A0;}
.stat-badge.is-accent b{color:#9A6510;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;background:var(--c-bg);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .28s ease,padding .28s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:var(--grad-brand);opacity:0;transition:opacity .3s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.site-header.is-scrolled::after{opacity:1;}
.header-inner{display:flex;align-items:center;gap:24px;height:var(--header-h);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--grad-brand);color:#fff;font-size:17px;box-shadow:0 6px 16px rgba(10,74,64,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text strong{font-size:19px;font-weight:800;color:var(--c-brand-deep);letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.16em;color:var(--c-muted);}
.main-nav{display:flex;align-items:center;gap:22px;margin-left:12px;flex:1 1 auto;}
.main-nav a{
  position:relative;font-size:15px;font-weight:500;color:var(--c-text);padding:6px 0;white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--c-brand);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.main-nav a:hover{color:var(--c-brand);}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1);}
.main-nav a.active{color:var(--c-brand-deep);font-weight:700;}
.header-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.search-toggle{
  width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-brand-deep);cursor:pointer;transition:background-color .22s ease,border-color .22s ease;
}
.search-toggle:hover{background:var(--c-accent-soft);border-color:var(--c-accent);}
.search-bar{
  display:none;padding:0 0 16px;
}
.search-bar.is-open{display:block;}
.search-bar input{
  width:100%;height:48px;border-radius:var(--r-md);border:1px solid var(--c-line);
  background:var(--c-surface);padding:0 18px;color:var(--c-text);margin:0;
}
.search-bar input:focus{outline:none;border-color:var(--c-brand);box-shadow:0 0 0 2px rgba(18,128,106,.28);background:#fff;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);
  background:var(--c-surface);padding:0;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;margin:3px auto;background:var(--c-brand-deep);border-radius:2px;transition:transform .24s ease,opacity .24s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

/* ============ 内页横幅 ============ */
.page-banner{position:relative;}
.banner-frame{
  position:relative;margin:28px auto 0;max-width:1200px;border-radius:var(--r-lg);overflow:hidden;
  min-height:340px;display:flex;align-items:flex-end;background:var(--c-brand-deep);
}
@media screen and (min-width:1280px){.banner-frame{max-width:1240px;}}
.banner-frame img.banner-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.banner-veil{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(14,31,28,.90) 0%,rgba(14,31,28,.72) 46%,rgba(10,74,64,.42) 100%);
}
.banner-inner{position:relative;z-index:2;padding:56px 32px 48px;width:100%;max-width:1200px;margin:0 auto;}
@media screen and (min-width:1280px){.banner-inner{max-width:1240px;}}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:18px;}
.breadcrumb a{color:rgba(255,255,255,.82);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}
.breadcrumb span.sep{opacity:.6;}
.banner-inner h1{color:#fff;max-width:20em;margin:14px 0 16px;}
.banner-lead{color:rgba(255,255,255,.86);font-size:17px;max-width:34em;margin-bottom:26px;}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px;}
.banner-actions .btn-ghost{border-color:rgba(255,255,255,.45);color:#fff;}
.banner-actions .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}

/* ============ 板块通用 ============ */
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.section-head{max-width:820px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  letter-spacing:.10em;color:var(--c-brand);text-transform:none;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--c-accent);}
.section-head h2{position:relative;padding-left:16px;margin-bottom:16px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:3px;background:var(--c-brand);
}
.section-head p{color:var(--c-muted);font-size:16px;margin:0;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head.center h2{padding-left:0;}
.section-head.center h2::before{display:none;}

.param-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
.param-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.param-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:#CFE3DD;}
.param-card:nth-child(even){margin-top:40px;}
.param-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--c-bg);}
.param-media img{width:100%;height:100%;object-fit:cover;transition:transform .26s ease-out;}
.param-card:hover .param-media img{transform:scale(1.03);}
.param-body{padding:26px 26px 28px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.param-icon{
  width:44px;height:44px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:rgba(18,128,106,.10);color:var(--c-brand);font-size:18px;
}
.param-body h3{font-size:21px;font-weight:700;}
.param-body p{margin:0;color:var(--c-muted);font-size:15px;line-height:1.85;}
.param-body .link-arrow{margin-top:auto;padding-top:6px;}

/* 适用工况 */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-1);transition:transform .24s ease,box-shadow .24s ease;
}
.scene-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.scene-item i{color:var(--c-accent);font-size:20px;}
.scene-item h3{font-size:18px;margin:14px 0 10px;}
.scene-item p{margin:0;font-size:14.5px;color:var(--c-muted);}

/* 步骤 */
.step-list{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative;}
.step-item{position:relative;padding:0 20px;}
.step-item::before{
  content:"";position:absolute;top:22px;left:0;right:0;height:1px;background:var(--c-line);
}
.step-item:first-child::before{left:50%;}
.step-item:last-child::before{right:50%;}
.step-num{
  position:relative;z-index:2;width:44px;height:44px;border-radius:var(--r-pill);
  display:flex;align-items:center;justify-content:center;background:var(--grad-accent);color:#fff;
  font-weight:800;font-size:15px;font-variant-numeric:tabular-nums;
  box-shadow:0 8px 18px rgba(201,127,30,.28);margin-bottom:18px;
}
.step-item h3{font-size:17px;margin-bottom:8px;}
.step-item p{margin:0;font-size:14px;color:var(--c-muted);}

/* 对比信息带 */
.compare-band{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:34px 32px;
  display:grid;grid-template-columns:repeat(3,1fr);gap:28px;
}
.compare-item{display:flex;gap:14px;align-items:flex-start;}
.compare-item .ci-icon{
  flex:0 0 auto;width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--c-accent-soft);color:#9A6510;font-size:16px;
}
.compare-item h3{font-size:17px;margin-bottom:6px;}
.compare-item p{margin:0;font-size:14px;color:var(--c-muted);}

/* 表格 */
.table-wrap{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow-x:auto;
}
table.spec-table{width:100%;min-width:660px;border-collapse:collapse;}
table.spec-table caption{
  caption-side:bottom;text-align:left;padding:14px 22px 18px;font-size:13px;color:var(--c-muted);
}
table.spec-table thead th{
  background:#0F4E44;color:#fff;font-size:14px;font-weight:600;text-align:left;
  padding:16px 22px;letter-spacing:.02em;
}
table.spec-table tbody td{
  padding:15px 22px;font-size:15px;border-top:1px solid var(--c-line);color:var(--c-text);
  font-variant-numeric:tabular-nums;vertical-align:top;
}
table.spec-table tbody tr:nth-child(even){background:#FBF9F4;}
table.spec-table tbody tr:hover{background:#F3F7F5;}
table.spec-table tbody td:first-child{font-weight:600;color:var(--c-brand-deep);}

/* FAQ */
.faq-list{max-width:860px;margin:0 auto;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;}
.faq-item + .faq-item{border-top:1px solid var(--c-line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 26px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--c-text);transition:color .22s ease,background-color .22s ease;
}
.faq-q:hover{color:var(--c-brand);background:#FBF9F4;}
.faq-q i{flex:0 0 auto;font-size:15px;color:var(--c-brand);transition:transform .24s ease;}
.faq-item.is-open .faq-q{color:var(--c-brand-deep);}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
.faq-a p{margin:0;padding:0 26px 24px;font-size:15px;line-height:1.8;color:var(--c-muted);}

/* 转化条 */
.cta-band{padding:24px 0 96px;}
.cta-inner{
  position:relative;background:var(--c-ink);border-radius:var(--r-lg);overflow:hidden;
  padding:52px 48px;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
}
.cta-inner::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand);}
.cta-copy h2{color:#fff;margin-bottom:16px;}
.cta-copy p{color:rgba(255,255,255,.72);font-size:15px;margin-bottom:22px;}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;}
.cta-points span{
  font-size:13px;color:rgba(255,255,255,.86);background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.16);border-radius:var(--r-pill);padding:5px 14px;
}
.cta-form{background:var(--c-surface);border-radius:var(--r-md);padding:28px;box-shadow:var(--sh-2);}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--c-muted);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;border:1px solid var(--c-line);border-radius:var(--r-md);
  background:#FBF9F4;padding:0 16px;height:48px;color:var(--c-text);margin:0;
  transition:border-color .22s ease,box-shadow .22s ease,background-color .22s ease;
}
.field textarea{height:auto;min-height:96px;padding:12px 16px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--c-brand);background:#fff;box-shadow:0 0 0 2px rgba(18,128,106,.28);
}
.field input::placeholder,.field textarea::placeholder{color:#9AA7A3;}
.form-note{font-size:12.5px;color:var(--c-muted);margin:12px 0 0;}
.cta-form .btn{width:100%;}

/* 页脚 */
.site-footer{
  position:relative;background:var(--c-ink);color:rgba(255,255,255,.78);padding:72px 0 28px;
}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand);}
.footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1.1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand strong{color:#fff;font-size:18px;font-weight:800;}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);margin:0;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:700;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col ul a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.72);}
.footer-bottom a:hover{color:#fff;text-decoration:underline;}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 24px;border-radius:var(--r-pill);background:var(--grad-accent);color:#fff;
  font-size:15px;font-weight:700;box-shadow:0 16px 34px rgba(201,127,30,.34);
  transition:transform .22s ease,box-shadow .24s ease,opacity .3s ease;
}
.float-cta:hover{color:#fff;transform:translateY(-3px);box-shadow:0 22px 44px rgba(201,127,30,.40);}
.float-cta.is-hidden{opacity:0;pointer-events:none;transform:translateY(14px);}

/* 装饰纹样 */
.dot-veil{
  position:absolute;right:-40px;bottom:-40px;width:260px;height:260px;opacity:.08;pointer-events:none;
  background-image:radial-gradient(#F7F4ED 1.4px,transparent 1.4px);
  background-size:18px 18px;border-radius:50%;
}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .grid-container{padding-left:24px;padding-right:24px;}
  .header-inner{gap:14px;}
  .main-nav{
    position:fixed;inset:var(--header-h) 0 0 0;flex-direction:column;align-items:stretch;gap:0;
    background:var(--c-bg);padding:24px;margin:0;overflow-y:auto;
    transform:translateY(-12px);opacity:0;visibility:hidden;transition:opacity .24s ease,transform .24s ease,visibility .24s ease;
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .main-nav a{font-size:17px;padding:16px 4px;border-bottom:1px solid var(--c-line);border-radius:0;}
  .main-nav a::after{display:none;}
  .main-nav a.active{color:var(--c-brand);}
  .nav-toggle{display:block;}
  .header-tools .btn-sm{display:none;}
  .section{padding:64px 0;}
  .banner-frame{border-radius:var(--r-md);min-height:300px;}
  .banner-inner{padding:40px 24px 36px;}
  .param-grid{grid-template-columns:1fr;gap:22px;}
  .param-card:nth-child(even){margin-top:0;}
  .scene-grid{grid-template-columns:1fr 1fr;}
  .step-list{grid-template-columns:1fr;gap:26px;}
  .step-item{padding:0 0 0 60px;}
  .step-item::before{top:44px;bottom:-26px;left:22px;right:auto;width:1px;height:auto;}
  .step-item:last-child::before{display:none;}
  .step-num{position:absolute;left:0;top:0;margin-bottom:0;}
  .compare-band{grid-template-columns:1fr;gap:22px;}
  .cta-inner{grid-template-columns:1fr;gap:32px;padding:40px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media screen and (max-width:639px){
  .grid-container{padding-left:20px;padding-right:20px;}
  body{padding-bottom:72px;}
  h1{font-size:28px;}
  .section{padding:44px 0;}
  .banner-frame{margin-top:16px;min-height:auto;}
  .banner-inner{padding:32px 20px 30px;}
  .banner-lead{font-size:15px;}
  .banner-actions .btn{width:100%;}
  .scene-grid{grid-template-columns:1fr;}
  .badge-row{gap:10px;}
  .stat-badge{padding:10px 16px;flex:1 1 calc(50% - 10px);}
  .stat-badge b{font-size:20px;}
  .faq-q{padding:18px 20px;font-size:16px;}
  .faq-a p{padding:0 20px 20px;}
  .cta-inner{padding:32px 20px;}
  .cta-form{padding:20px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;justify-content:center;height:56px;padding:0 20px;
    box-shadow:0 -8px 24px rgba(14,31,28,.18);
  }
  .float-cta:hover{transform:none;}
}

/* roulang page: category3 */
/* ==================== 设计变量 ==================== */
:root{
  --c-ink:#0E1F1C;
  --c-brand:#12806A;
  --c-brand-deep:#0A4A40;
  --c-accent:#E0A32E;
  --c-accent-deep:#C97F1E;
  --c-accent-soft:#F6E3B8;
  --c-bg:#F7F4ED;
  --c-surface:#FFFFFF;
  --c-line:#E3DED2;
  --c-text:#16211F;
  --c-muted:#5E6E6A;
  --grad-brand:linear-gradient(135deg,#12806A 0%,#0A4A40 100%);
  --grad-accent:linear-gradient(120deg,#E0A32E 0%,#C97F1E 100%);
  --r-lg:24px;
  --r-md:16px;
  --r-pill:999px;
  --sh-1:0 2px 6px rgba(14,31,28,.05);
  --sh-2:0 14px 34px rgba(14,31,28,.10);
  --sh-3:0 22px 48px rgba(14,31,28,.16);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --section-y:96px;
}
/* ==================== 基础重置 ==================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-brand);text-decoration:none;transition:color .2s ease,background-color .2s ease;}
a:hover{color:var(--c-brand-deep);}
h1,h2,h3,h4{margin:0 0 .6em;color:var(--c-text);font-weight:700;line-height:1.28;}
h1{font-size:clamp(30px,4.4vw,52px);font-weight:800;line-height:1.18;letter-spacing:-.01em;}
h2{font-size:clamp(24px,3vw,32px);}
h3{font-size:20px;font-weight:600;}
p{margin:0 0 1.15em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;}
.grid-container{width:100%;max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px;}
.num{font-variant-numeric:tabular-nums;}

/* ==================== 通用板块 ==================== */
.section{padding:var(--section-y) 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{position:relative;padding-left:16px;margin-bottom:16px;}
.section-head h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;background:var(--c-brand);}
.section-head p{color:var(--c-muted);font-size:16px;margin:0;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--c-brand);background:rgba(18,128,106,.08);border-radius:var(--r-pill);padding:5px 14px;margin-bottom:18px;}
.tag{display:inline-block;background:var(--c-accent-soft);color:#8A5A10;font-size:11.5px;border-radius:var(--r-pill);padding:4px 10px;line-height:1.6;}

/* ==================== 按钮 ==================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-pill);font-size:15px;font-weight:600;
  border:1px solid transparent;line-height:1.4;transition:all .22s ease;
}
.btn-primary{background:var(--grad-accent);color:#fff;box-shadow:0 8px 20px rgba(224,163,46,.28);}
.btn-primary:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 14px 30px rgba(224,163,46,.34);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(224,163,46,.24);}
.btn-ghost{background:transparent;border-color:var(--c-line);color:var(--c-brand);}
.btn-ghost:hover{background:var(--c-accent-soft);color:var(--c-brand-deep);border-color:var(--c-accent-soft);}
.btn-light{background:#fff;color:var(--c-brand-deep);}
.btn-light:hover{background:var(--c-accent-soft);color:var(--c-brand-deep);}
.btn-sm{padding:9px 18px;font-size:14px;}
.link-cta{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--c-brand);font-size:15px;}
.link-cta i{transition:transform .22s ease;}
.link-cta:hover i{transform:translateX(4px);}

/* ==================== 导航 ==================== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,244,237,.95);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:var(--sh-1);}
.header-inner{display:flex;align-items:center;gap:28px;height:68px;}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad-brand);color:#fff;
  display:grid;place-items:center;font-size:17px;flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.12;}
.brand-text strong{font-size:19px;font-weight:800;color:var(--c-text);letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.2em;color:var(--c-muted);}
.main-nav{display:flex;align-items:center;gap:4px;}
.main-nav a{
  position:relative;display:inline-block;padding:8px 12px;font-size:15px;font-weight:500;color:var(--c-text);border-radius:var(--r-pill);
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-brand);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.main-nav a:hover{color:var(--c-brand);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{color:var(--c-brand);font-weight:600;}
.main-nav a.active::after{transform:scaleX(1);}
.header-tools{margin-left:auto;display:flex;align-items:center;gap:10px;}
.search-toggle{
  width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--c-line);
  background:#fff;color:var(--c-brand);display:grid;place-items:center;font-size:15px;transition:all .2s ease;
}
.search-toggle:hover{background:var(--c-accent-soft);border-color:var(--c-accent-soft);}
.search-bar{display:none;padding:0 0 16px;}
.search-bar.open{display:block;}
.search-bar input{
  width:100%;height:48px;border-radius:var(--r-md);border:1px solid var(--c-line);
  background:#fff;padding:0 16px;font-size:15px;color:var(--c-text);transition:border-color .2s ease,box-shadow .2s ease;
}
.search-bar input::placeholder{color:#9AA8A4;}
.search-bar input:focus{outline:none;border-color:var(--c-brand);box-shadow:0 0 0 2px rgba(18,128,106,.35);}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:12px;background:#fff;padding:0;}
.nav-toggle span{display:block;width:18px;height:2px;margin:4px auto;background:var(--c-text);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}

/* ==================== Hero ==================== */
.cat-hero{
  position:relative;padding:72px 0 84px;overflow:hidden;
  background:
    radial-gradient(circle at 88% 12%, rgba(18,128,106,.10) 0%, rgba(18,128,106,0) 55%),
    linear-gradient(135deg,rgba(18,128,106,.07) 0%,rgba(10,74,64,.03) 100%);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.07;
  background-image:radial-gradient(#0A4A40 1px,transparent 1px);
  background-size:22px 22px;
}
.hero-grid{position:relative;z-index:2;}
.hero-copy h1{margin-bottom:20px;}
.hero-lead{font-size:18px;color:var(--c-muted);max-width:560px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;}
.badge{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-pill);
  padding:10px 18px;display:inline-flex;align-items:center;gap:10px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;
}
.badge:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.badge b{font-size:22px;font-weight:800;color:var(--c-brand);font-variant-numeric:tabular-nums;line-height:1;}
.badge span{font-size:13px;color:var(--c-muted);}
.badge.accent{background:var(--c-accent-soft);border-color:var(--c-accent-soft);}
.badge.accent b{color:var(--c-accent-deep);}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-2);
}
.hero-float{
  position:absolute;left:-14px;bottom:-22px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:14px 20px;box-shadow:var(--sh-2);display:flex;align-items:center;gap:12px;
}
.hero-float i{width:34px;height:34px;border-radius:10px;background:var(--grad-brand);color:#fff;display:grid;place-items:center;font-size:14px;}
.hero-float b{display:block;font-size:19px;font-weight:800;color:var(--c-brand-deep);font-variant-numeric:tabular-nums;line-height:1.2;}
.hero-float span{font-size:12.5px;color:var(--c-muted);}

/* ==================== 步骤带 ==================== */
.steps-wrap{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:26px;}
.step{position:relative;padding-top:56px;}
.step-num{
  position:absolute;top:0;left:0;width:40px;height:40px;border-radius:12px;
  background:var(--grad-accent);color:#fff;font-weight:800;font-size:15px;
  display:grid;place-items:center;font-variant-numeric:tabular-nums;box-shadow:0 8px 18px rgba(224,163,46,.25);
}
.step::after{content:"";position:absolute;top:20px;left:52px;right:-13px;height:1px;background:var(--c-line);}
.step:last-child::after{display:none;}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--c-muted);line-height:1.75;margin:0;}

/* ==================== 记录板块 ==================== */
.records{display:flex;gap:48px;align-items:flex-start;}
.records-media{flex:0 0 46%;}
.records-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-2);}
.records-media figcaption{font-size:13px;color:var(--c-muted);margin-top:12px;}
.records-list{flex:1;}
.record-item{
  display:flex;gap:16px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:20px 22px;margin-bottom:14px;box-shadow:var(--sh-1);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.record-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CFE3DD;}
.record-item i{flex:0 0 38px;height:38px;border-radius:11px;background:rgba(18,128,106,.10);color:var(--c-brand);display:grid;place-items:center;font-size:15px;}
.record-item h3{font-size:16.5px;margin-bottom:6px;}
.record-item p{font-size:14.5px;color:var(--c-muted);margin:0;line-height:1.75;}
.records-note{margin-top:18px;font-size:13px;color:var(--c-muted);}

/* ==================== 对照表 ==================== */
.table-section{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.table-scroll{overflow-x:auto;border:1px solid var(--c-line);border-radius:var(--r-md);background:#fff;}
table.spec{min-width:840px;}
table.spec th{
  background:#EAF1EE;color:var(--c-ink);font-size:14.5px;font-weight:700;text-align:left;
  padding:16px;border-bottom:1px solid var(--c-line);white-space:nowrap;
}
table.spec td{
  padding:16px;border-bottom:1px solid var(--c-line);font-size:14.8px;color:var(--c-text);vertical-align:top;
}
table.spec tbody tr:last-child td{border-bottom:none;}
table.spec tbody tr:hover{background:#FAF8F3;}
table.spec td:first-child{font-weight:600;}
.table-hint{margin-top:16px;font-size:13px;color:var(--c-muted);}

/* ==================== FAQ ==================== */
.faq{max-width:860px;margin:0 auto;}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;transition:box-shadow .24s ease,border-color .24s ease;}
.faq-item.open{border-color:#CFE3DD;box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;background:none;border:0;font-size:17px;font-weight:600;color:var(--c-text);text-align:left;transition:color .2s ease;
}
.faq-q:hover{color:var(--c-brand);}
.faq-q i{color:var(--c-brand);font-size:15px;transition:transform .24s ease;flex-shrink:0;}
.faq-item.open .faq-q i{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
.faq-a p{padding:0 22px 18px;margin:0;font-size:15px;color:var(--c-muted);line-height:1.8;}

/* ==================== 转化条 ==================== */
.cta-panel{
  position:relative;background:var(--c-ink);border-radius:var(--r-lg);overflow:hidden;
  padding:52px 56px;display:flex;align-items:center;justify-content:space-between;gap:40px;
}
.cta-panel::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand);}
.cta-panel h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;}
.cta-panel p{color:rgba(255,255,255,.72);font-size:15.5px;margin:0;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;flex-shrink:0;}

/* ==================== 页脚 ==================== */
.site-footer{background:var(--c-ink);color:#fff;position:relative;margin-top:var(--section-y);}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding:64px 0 40px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand strong{font-size:18px;font-weight:800;color:#fff;}
.footer-col p{font-size:14px;color:rgba(255,255,255,.66);line-height:1.8;margin:0;max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col ul a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.72);}
.footer-bottom a:hover{color:#fff;}

/* ==================== 响应式 ==================== */
@media screen and (max-width:1279px){
  .grid-container{max-width:100%;}
}
@media screen and (max-width:1023px){
  :root{--section-y:64px;}
  .main-nav{
    position:fixed;top:68px;left:0;right:0;bottom:0;background:var(--c-bg);
    flex-direction:column;align-items:stretch;gap:4px;padding:20px;margin:0;
    transform:translateY(-12px);opacity:0;pointer-events:none;transition:all .24s ease;overflow-y:auto;
  }
  .main-nav.open{transform:translateY(0);opacity:1;pointer-events:auto;}
  .main-nav a{padding:14px 16px;font-size:16px;border-radius:var(--r-md);background:#fff;border:1px solid var(--c-line);}
  .main-nav a::after{display:none;}
  .nav-toggle{display:block;}
  .header-tools .btn-sm{display:none;}
  .hero-media{margin-top:44px;}
  .hero-float{left:12px;bottom:-18px;}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px;}
  .step::after{display:none;}
  .records{flex-direction:column;gap:32px;}
  .records-media{flex:none;width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-top:52px;}
  .cta-panel{flex-direction:column;align-items:flex-start;padding:44px 36px;}
}
@media screen and (max-width:639px){
  :root{--section-y:44px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .header-inner{height:56px;gap:12px;}
  .main-nav{top:56px;}
  .brand-mark{width:34px;height:34px;font-size:15px;}
  .brand-text strong{font-size:17px;}
  .cat-hero{padding:44px 0 60px;}
  .hero-lead{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .hero-badges{gap:10px;}
  .badge{flex:1 1 calc(50% - 5px);padding:10px 14px;}
  .badge b{font-size:19px;}
  .hero-float{position:static;margin-top:16px;}
  .steps{grid-template-columns:1fr;}
  .cta-panel{padding:36px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .record-item{flex-direction:column;gap:12px;}
}