/* roulang page: index */
:root{
  --brand-500:#12B3A6;
  --brand-700:#0B7C6C;
  --brand-100:#D9F2EE;
  --accent-500:#FF6B3D;
  --gold-400:#FFC94D;
  --bg:#FBF9F6;
  --surface:#FFFFFF;
  --surface-tint:#EFF7F5;
  --ink-900:#0C1B1C;
  --text-900:#121A19;
  --text-600:#4B5B58;
  --text-400:#8C9B98;
  --line:#E4EBE9;
  --line-soft:#EFF3F2;
  --ok:#1F9D6B;
  --warn:#E0940B;
  --err:#D9483B;
  --r-xs:6px;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --shadow-1:0 1px 2px rgba(12,27,28,.06);
  --shadow-2:0 6px 20px -6px rgba(12,27,28,.12);
  --shadow-3:0 18px 48px -18px rgba(12,27,28,.22);
  --nav-h:68px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--text-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-500);}
h1,h2,h3,h4,h5{margin:0;line-height:1.3;color:var(--text-900);font-weight:700;}
p{margin:0 0 1.15em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px;}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto;}
@media (min-width:1400px){.container{max-width:1280px;}}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--ink-900);
  color:#B9CDCA;
  font-size:13px;
  line-height:1;
  min-height:38px;
}
.topbar .container{
  display:flex;align-items:center;justify-content:space-between;
  min-height:38px;gap:16px;
}
.topbar-left{display:flex;align-items:center;gap:12px;overflow:hidden;white-space:nowrap;}
.topbar-left .dot{width:7px;height:7px;border-radius:50%;background:var(--brand-500);flex:0 0 auto;}
.topbar-left span{opacity:.85;}
.topbar-left .dom{color:#8FA6A3;}
.topbar-right a{
  color:#D9F2EE;display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
}
.topbar-right a:hover{color:#fff;}
.topbar-right a i{font-size:11px;transition:transform .2s ease;}
.topbar-right a:hover i{transform:translateX(3px);}

/* ---------- 主导航 ---------- */
.site-head{position:relative;z-index:1030;}
.navbar-main{
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
  position:sticky;top:0;
  transition:box-shadow .25s ease;
}
.navbar-main.is-stuck{box-shadow:var(--shadow-2);}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  min-height:var(--nav-h);gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(140deg,var(--brand-500),var(--brand-700));
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:17px;box-shadow:var(--shadow-1);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:17px;font-weight:800;color:var(--text-900);letter-spacing:.2px;}
.brand-text small{font-size:11px;color:var(--text-400);letter-spacing:1.4px;text-transform:uppercase;}
.main-nav{display:flex;align-items:center;gap:4px;}
.main-nav a{
  position:relative;
  font-size:15px;font-weight:500;color:var(--text-600);
  padding:10px 14px;border-radius:var(--r-sm);
  white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--brand-500);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.main-nav a:hover{color:var(--brand-700);background:var(--surface-tint);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{color:var(--brand-700);background:var(--brand-100);font-weight:600;}
.main-nav a.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.burger{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;color:var(--text-900);display:flex;align-items:center;justify-content:center;
  font-size:17px;cursor:pointer;
}
.burger:hover{border-color:var(--brand-500);color:var(--brand-700);}

/* ---------- 按钮 ---------- */
.btn-brand,.btn-ghost,.btn-plain{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1.5;
  border:1px solid transparent;cursor:pointer;
  transition:all .22s ease;
}
.btn-brand{background:var(--brand-500);color:#fff;box-shadow:var(--shadow-1);}
.btn-brand:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-brand:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-700);}
.btn-plain{background:var(--accent-500);color:#fff;}
.btn-plain:hover{background:#e85a2e;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-sm-nav{height:42px;padding:0 20px;font-size:14px;}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-700);
}
.btn-link-arrow i{transition:transform .2s ease;font-size:12px;}
.btn-link-arrow:hover{color:var(--brand-500);}
.btn-link-arrow:hover i{transform:translateX(4px);}

/* ---------- 通用板块 ---------- */
.section{padding:104px 0;}
.section-tint{background:var(--surface-tint);}
.section-dark{background:var(--ink-900);color:#D6E3E1;padding:80px 0 88px;}
.section-dark h2,.section-dark h3{color:#fff;}
.sec-head{max-width:760px;margin-bottom:52px;}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:1px;
  color:var(--brand-700);background:var(--brand-100);
  padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.sec-head h2{font-size:32px;font-weight:700;margin-bottom:14px;}
.sec-head p{font-size:16px;color:var(--text-600);margin:0;}
.sec-head.row-between{max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:78px 0 64px;
  background:var(--bg);
}
.hero::before{
  content:"";position:absolute;top:-160px;right:-120px;width:620px;height:620px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,179,166,.10),rgba(18,179,166,0) 68%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(12,27,28,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(12,27,28,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center;}
.hero h1{
  font-size:44px;font-weight:800;line-height:1.25;letter-spacing:-.5px;margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:var(--brand-700);}
.hero-sub{font-size:18px;color:var(--text-600);max-width:560px;margin-bottom:30px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:18px;}
.hero-note{font-size:13px;color:var(--text-400);display:flex;align-items:center;gap:8px;}
.hero-note i{color:var(--brand-500);}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;height:404px;border-radius:var(--r-lg);box-shadow:var(--shadow-3);
  background:var(--surface-tint);
}
.hero-badge{
  position:absolute;left:-14px;bottom:26px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-2);padding:12px 18px;display:flex;align-items:center;gap:12px;
}
.hero-badge i{color:var(--accent-500);font-size:18px;}
.hero-badge b{display:block;font-size:15px;font-weight:700;}
.hero-badge span{font-size:12px;color:var(--text-400);}

/* ---------- 数据条 ---------- */
.stat-strip{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:#fff;
}
.stat-strip .container{
  display:grid;grid-template-columns:repeat(4,1fr);
}
.stat-item{
  padding:30px 24px;border-right:1px solid var(--line-soft);
}
.stat-item:last-child{border-right:none;}
.stat-item b{
  display:block;font-size:32px;font-weight:800;color:var(--brand-700);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stat-item span{font-size:14px;color:var(--text-600);}

/* ---------- 锚点吸顶条 ---------- */
.anchor-bar{
  position:sticky;top:var(--nav-h);z-index:1020;
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.anchor-bar .container{display:flex;align-items:center;gap:8px;height:56px;overflow-x:auto;scrollbar-width:none;}
.anchor-bar .container::-webkit-scrollbar{display:none;}
.anchor-bar a{
  font-size:15px;font-weight:500;color:var(--text-600);
  padding:8px 16px;border-radius:999px;white-space:nowrap;
}
.anchor-bar a:hover{color:var(--brand-700);background:var(--surface-tint);}
.anchor-bar a.active{background:var(--brand-100);color:var(--brand-700);font-weight:600;}
section[id]{scroll-margin-top:140px;}

/* ---------- 卖点区（不对称） ---------- */
.feature-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:56px;align-items:start;}
.feature-main{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-1);
}
.feature-main img{width:100%;height:280px;background:var(--surface-tint);}
.feature-main-body{padding:34px 36px 38px;}
.feature-main-body h3{font-size:23px;margin-bottom:14px;}
.feature-main-body p{color:var(--text-600);font-size:16px;margin-bottom:20px;}
.feature-tags{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:500;color:var(--brand-700);
  background:var(--brand-100);border-radius:var(--r-xs);padding:5px 12px;
}
.feature-list{display:flex;flex-direction:column;}
.feature-list-item{
  display:flex;gap:20px;padding:26px 0;border-bottom:1px solid var(--line);
}
.feature-list-item:first-child{padding-top:0;}
.feature-list-item:last-child{border-bottom:none;}
.feature-num{
  font-size:52px;font-weight:800;line-height:1;color:rgba(18,179,166,.20);
  font-variant-numeric:tabular-nums;flex:0 0 auto;
}
.feature-list-item h4{font-size:18px;font-weight:600;margin-bottom:6px;}
.feature-list-item p{font-size:15px;color:var(--text-600);margin:0;}

/* ---------- 流程 / 标签切换 ---------- */
.flow-tabs{border:none;gap:10px;margin-bottom:36px;display:flex;flex-wrap:wrap;}
.flow-tabs .nav-link{
  border:1px solid var(--line);border-radius:999px;background:#fff;
  color:var(--text-600);font-size:15px;font-weight:500;padding:10px 22px;
}
.flow-tabs .nav-link:hover{color:var(--brand-700);border-color:var(--brand-500);}
.flow-tabs .nav-link.active{
  background:var(--brand-500);border-color:var(--brand-500);color:#fff;font-weight:600;
}
.flow-pane{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
.flow-pane img{width:100%;height:320px;border-radius:var(--r-md);box-shadow:var(--shadow-2);background:var(--surface-tint);}
.flow-pane h3{font-size:23px;margin-bottom:16px;}
.flow-pane p{color:var(--text-600);font-size:16px;}
.step-dots{display:flex;gap:10px;margin-bottom:22px;}
.step-dots i{
  width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;font-style:normal;
  border:1.5px solid var(--brand-500);color:var(--brand-700);background:#fff;
}
.step-dots i.on{background:var(--brand-500);color:#fff;}
.check-list{margin-top:6px;}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-600);
  padding:6px 0;line-height:1.75;
}
.check-list li i{color:var(--brand-500);font-size:13px;margin-top:7px;flex:0 0 auto;}

/* ---------- 证据区 ---------- */
.evidence-nums{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:44px;}
.evidence-num{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:30px 28px;box-shadow:var(--shadow-1);
}
.evidence-num b{
  display:block;font-size:40px;font-weight:800;color:var(--brand-700);
  line-height:1.15;font-variant-numeric:tabular-nums;
}
.evidence-num b small{font-size:18px;font-weight:700;margin-left:2px;}
.evidence-num span{display:block;font-size:15px;font-weight:600;margin:10px 0 6px;}
.evidence-num p{font-size:14px;color:var(--text-600);margin:0;}
.scroll-row{
  display:flex;gap:24px;overflow-x:auto;padding:6px 4px 22px;
  scroll-snap-type:x mandatory;scrollbar-width:thin;
}
.scroll-row::-webkit-scrollbar{height:6px;}
.scroll-row::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px;}
.case-card{
  flex:0 0 320px;scroll-snap-align:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--shadow-1);transition:all .24s ease;
}
.case-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand-100);}
.case-card img{width:100%;height:160px;background:var(--surface-tint);}
.case-card-body{padding:20px 22px 24px;}
.case-card-body h4{font-size:17px;font-weight:600;margin-bottom:8px;}
.case-card-body p{font-size:14px;color:var(--text-600);margin:0 0 12px;}
.case-card-body span{font-size:13px;color:var(--text-400);}
.badge-row{display:flex;flex-wrap:wrap;gap:12px;}
.badge-pill{
  display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 16px;
  background:var(--surface-tint);border:1px solid var(--line);border-radius:var(--r-xs);
  font-size:13px;font-weight:500;color:var(--text-600);
}
.badge-pill i{color:var(--brand-500);font-size:13px;}

/* ---------- 访问方式（档位卡） ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.plan-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:34px 30px 36px;display:flex;flex-direction:column;
  box-shadow:var(--shadow-1);transition:all .24s ease;
}
.plan-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.plan-card.is-featured{border:2px solid var(--brand-500);box-shadow:var(--shadow-2);}
.plan-card.is-featured::before{
  content:"";position:absolute;left:0;right:0;top:0;height:4px;
  background:var(--brand-500);border-radius:var(--r-md) var(--r-md) 0 0;
}
.plan-tip{
  position:absolute;top:-13px;right:22px;background:var(--accent-500);color:#fff;
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;
  box-shadow:var(--shadow-1);
}
.plan-card h3{font-size:20px;margin-bottom:8px;}
.plan-card .plan-desc{font-size:14px;color:var(--text-600);margin-bottom:22px;}
.plan-card .plan-price{
  font-size:15px;font-weight:600;color:var(--brand-700);padding-bottom:20px;
  border-bottom:1px solid var(--line-soft);margin-bottom:20px;
}
.plan-card ul{flex:1;margin-bottom:26px;}
.plan-card ul li{
  display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-600);
  padding:5px 0;line-height:1.7;
}
.plan-card ul li i{color:var(--brand-500);font-size:12px;margin-top:8px;flex:0 0 auto;}
.plan-compare{
  margin-top:32px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px 32px;display:grid;grid-template-columns:repeat(3,1fr);gap:28px;
}
.plan-compare div h4{font-size:15px;font-weight:600;margin-bottom:8px;color:var(--brand-700);}
.plan-compare div p{font-size:14px;color:var(--text-600);margin:0;}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--shadow-1);
  transition:all .24s ease;color:inherit;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand-100);color:inherit;}
.news-media{overflow:hidden;}
.news-media img{width:100%;aspect-ratio:16/9;height:auto;transition:transform .24s ease;background:var(--surface-tint);}
.news-card:hover .news-media img{transform:scale(1.03);}
.news-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.news-badge{
  align-self:flex-start;font-size:13px;font-weight:500;color:var(--brand-700);
  background:var(--brand-100);border-radius:var(--r-xs);padding:4px 11px;margin-bottom:12px;
}
.news-title{
  font-size:17px;font-weight:600;line-height:1.55;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover .news-title{color:var(--brand-700);}
.news-excerpt{
  font-size:14px;color:var(--text-600);line-height:1.75;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-400);border-top:1px solid var(--line-soft);padding-top:14px;
}
.news-more{color:var(--brand-700);font-weight:600;}
.news-empty{
  border:1px dashed var(--line);border-radius:var(--r-md);padding:56px 32px;text-align:center;
  background:#fff;
}
.news-empty i{font-size:30px;color:var(--text-400);margin-bottom:16px;display:block;}
.news-empty p{font-size:15px;color:var(--text-600);margin-bottom:20px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.accordion-item{
  border:1px solid var(--line);border-radius:12px !important;overflow:hidden;
  background:#fff;margin-bottom:12px;box-shadow:var(--shadow-1);
}
.accordion-button{
  font-size:17px;font-weight:500;color:var(--text-900);background:#fff;
  padding:20px 24px;box-shadow:none !important;border:none;
  position:relative;
}
.accordion-button::after{
  background-image:none;content:"\2b";font-family:inherit;font-size:20px;font-weight:400;
  width:auto;height:auto;color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;
  transition:transform .25s ease;transform-origin:center;
}
.accordion-button:not(.collapsed){color:var(--brand-700);font-weight:600;background:var(--surface-tint);}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.accordion-button::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  background:var(--brand-500);border-radius:0 3px 3px 0;opacity:0;transition:opacity .2s ease;
}
.accordion-button:not(.collapsed)::before{opacity:1;}
.accordion-body{padding:6px 24px 24px;font-size:16px;color:var(--text-600);line-height:1.85;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink-900);color:#CFE0DE;position:relative;overflow:hidden;
  padding:84px 0 88px;text-align:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:72px 72px;
}
.cta-band .container{position:relative;z-index:2;max-width:760px;}
.cta-band h2{font-size:32px;color:#fff;margin-bottom:16px;}
.cta-band p{font-size:16px;color:#A9C1BE;margin-bottom:30px;}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.28);}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:#9FB6B3;position:relative;padding-top:64px;}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--brand-500),var(--brand-700));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:52px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand b{color:#fff;font-size:17px;font-weight:800;}
.footer-brand .brand-mark{background:linear-gradient(140deg,var(--brand-500),var(--brand-700));}
.footer-col p{font-size:14px;line-height:1.85;margin-bottom:14px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a{
  color:#9FB6B3;font-size:14px;display:inline-flex;align-items:center;gap:6px;
  transition:all .2s ease;
}
.footer-col ul li a:hover{color:var(--brand-500);transform:translateX(4px);}
.footer-contact{font-size:14px;display:flex;align-items:center;gap:10px;margin-bottom:11px;}
.footer-contact i{color:var(--brand-500);width:16px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:24px 0 32px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#7C9592;
}
.footer-bottom a{color:#7C9592;}
.footer-bottom a:hover{color:var(--brand-500);}

/* ---------- 浮动 CTA ---------- */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:1040;display:flex;flex-direction:column;align-items:flex-end;gap:12px;}
.float-panel{
  width:236px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-3);padding:14px;display:none;
}
.float-panel.open{display:block;}
.float-panel a{
  display:flex;align-items:center;justify-content:space-between;
  font-size:14px;color:var(--text-600);padding:9px 12px;border-radius:8px;
}
.float-panel a:hover{background:var(--surface-tint);color:var(--brand-700);}
.float-panel .float-cta-btn{
  margin-top:8px;width:100%;height:42px;border-radius:var(--r-sm);
  background:var(--brand-500);color:#fff;font-size:14px;font-weight:600;
  display:flex;align-items:center;justify-content:center;
}
.float-panel .float-cta-btn:hover{background:var(--brand-700);color:#fff;}
.float-btn{
  height:52px;padding:0 22px;border-radius:999px;border:none;cursor:pointer;
  background:var(--accent-500);color:#fff;font-size:15px;font-weight:600;
  display:flex;align-items:center;gap:9px;box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .3s ease;
}
.float-btn.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-btn:hover{background:#e85a2e;box-shadow:var(--shadow-3);}

/* ---------- Offcanvas ---------- */
.offcanvas{width:320px;}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 22px;}
.offcanvas-body{padding:0;}
.drawer-info{
  background:var(--ink-900);color:#B9CDCA;font-size:13px;padding:14px 22px;line-height:1.7;
}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 22px;font-size:16px;color:var(--text-900);
  border-bottom:1px solid var(--line-soft);
}
.drawer-nav a.active{color:var(--brand-700);background:var(--surface-tint);font-weight:600;}
.drawer-nav a i{font-size:12px;color:var(--text-400);}
.drawer-cta{padding:22px;}
.drawer-cta .btn-brand{width:100%;}

/* ---------- 响应式 ---------- */
@media (max-width:1399px){
  .hero h1{font-size:40px;}
}
@media (max-width:1199px){
  .section{padding:88px 0;}
  .hero-grid{gap:40px;}
  .hero h1{font-size:36px;}
  .hero-figure img{height:360px;}
  .feature-grid{gap:40px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .section-dark{padding:64px 0 72px;}
  .hero{padding:56px 0 48px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-figure img{height:300px;}
  .hero h1{font-size:32px;}
  .hero-sub{font-size:17px;}
  .stat-strip .container{grid-template-columns:repeat(2,1fr);}
  .stat-item{border-bottom:1px solid var(--line-soft);}
  .stat-item:nth-child(2n){border-right:none;}
  .feature-grid{grid-template-columns:1fr;gap:40px;}
  .flow-pane{grid-template-columns:1fr;gap:28px;}
  .flow-pane img{height:260px;}
  .evidence-nums{grid-template-columns:1fr;}
  .plan-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .plan-compare{grid-template-columns:1fr;gap:20px;}
  .sec-head h2{font-size:26px;}
  .cta-band h2{font-size:26px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding-left:20px;padding-right:20px;}
  .topbar-left span.hide-sm{display:none;}
  .section{padding:60px 0;}
  .hero h1{font-size:30px;}
  .hero-figure img{height:230px;}
  .hero-badge{left:12px;bottom:12px;padding:10px 14px;}
  .sec-head{margin-bottom:36px;}
  .sec-head.row-between{flex-direction:column;align-items:flex-start;gap:14px;}
  .news-grid{grid-template-columns:1fr;}
  .case-card{flex:0 0 268px;}
  .anchor-bar .container{height:52px;}
  .accordion-button{font-size:16px;padding:17px 18px;}
  .accordion-body{padding:4px 18px 20px;}
  .float-cta{
    left:0;right:0;bottom:0;width:100%;
    flex-direction:column;align-items:stretch;gap:0;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px));
    background:rgba(255,255,255,.97);
    border-top:1px solid var(--line);box-shadow:0 -6px 20px -8px rgba(12,27,28,.14);
  }
  .float-panel{width:100%;margin-bottom:10px;}
  .float-btn{
    width:100%;border-radius:var(--r-sm);justify-content:center;height:50px;
    opacity:1;visibility:visible;transform:none;
  }
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  body{padding-bottom:80px;}
}
@media (max-width:575px){
  .hero h1{font-size:28px;}
  .hero-cta .btn-brand,.hero-cta .btn-ghost{width:100%;}
  .stat-strip .container{grid-template-columns:1fr;}
  .stat-item{border-right:none;}
  .evidence-num b{font-size:34px;}
  .feature-num{font-size:44px;}
}

/* roulang page: article */
:root{
  --brand-500:#12B3A6;
  --brand-700:#0B7C6C;
  --brand-100:#D9F2EE;
  --accent-500:#FF6B3D;
  --gold-400:#FFC94D;
  --bg:#FBF9F6;
  --surface:#FFFFFF;
  --surface-tint:#EFF7F5;
  --ink-900:#0C1B1C;
  --text-900:#121A19;
  --text-600:#4B5B58;
  --text-400:#8C9B98;
  --line:#E4EBE9;
  --line-soft:#EFF3F2;
  --ok:#1F9D6B;
  --warn:#E0940B;
  --err:#D9483B;
  --r-xs:6px;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --shadow-1:0 1px 2px rgba(12,27,28,.06);
  --shadow-2:0 6px 20px -6px rgba(12,27,28,.12);
  --shadow-3:0 18px 48px -18px rgba(12,27,28,.22);
  --nav-h:68px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text-900);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-500);}
h1,h2,h3,h4,h5{color:var(--text-900);line-height:1.3;margin:0;font-weight:700;}
p{margin:0 0 1.15em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px;}
.container{max-width:1200px;padding-left:24px;padding-right:24px;}
@media (min-width:1400px){.container{max-width:1280px;}}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--ink-900);
  color:#B9CFCC;
  font-size:13px;
  line-height:1;
  padding:11px 0;
  position:relative;
  z-index:1045;
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;white-space:nowrap;overflow-x:auto;scrollbar-width:none;}
.topbar-inner::-webkit-scrollbar{display:none;}
.topbar-left{display:flex;align-items:center;gap:10px;color:#9FBCB8;}
.topbar-left i{color:var(--brand-500);}
.topbar-domain{color:#DCEAE7;}
.topbar-right a{color:#DCEAE7;display:inline-flex;align-items:center;gap:8px;transition:color .2s ease;}
.topbar-right a:hover{color:var(--brand-500);}
.topbar-right a i{transition:transform .24s ease;}
.topbar-right a:hover i{transform:translateX(3px);}
.topbar .dot-sep{opacity:.5;}

/* ---------- 主导航 ---------- */
.site-header{
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--line);
  position:sticky;
  top:0;
  z-index:1040;
  transition:box-shadow .24s ease,backdrop-filter .24s ease;
}
.site-header.scrolled{box-shadow:var(--shadow-2);backdrop-filter:saturate(150%) blur(8px);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;min-height:var(--nav-h);gap:20px;}
.brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:var(--r-sm);
  background:linear-gradient(150deg,var(--brand-500),var(--brand-700));
  color:#fff;display:inline-flex;align-items:center;justify-content:center;
  font-size:18px;box-shadow:var(--shadow-1);
}
.brand-text{font-size:19px;font-weight:700;color:var(--text-900);letter-spacing:.2px;line-height:1;}
.brand-text b{color:var(--brand-700);font-weight:700;}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:auto;}
.main-nav a{
  position:relative;
  font-size:15px;font-weight:500;color:var(--text-600);
  padding:22px 0;line-height:1;white-space:nowrap;
  transition:color .2s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;border-radius:2px;
  background:var(--brand-500);transform:scaleX(0);transform-origin:center;transition:transform .24s ease;
}
.main-nav a:hover{color:var(--brand-700);}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1);}
.main-nav a.active{color:var(--brand-700);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1.5;
  border-radius:var(--r-sm);
  padding:0 20px;height:48px;
  border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  cursor:pointer;
}
.btn-primary,.btn-primary:focus{
  --bs-btn-bg:var(--brand-500);
  --bs-btn-border-color:var(--brand-500);
  --bs-btn-hover-bg:var(--brand-700);
  --bs-btn-hover-border-color:var(--brand-700);
  --bs-btn-active-bg:var(--brand-700);
  --bs-btn-active-border-color:var(--brand-700);
  --bs-btn-color:#fff;
  --bs-btn-hover-color:#fff;
  background:var(--brand-500);color:#fff;border-color:var(--brand-500);
}
.btn-primary:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn-outline-brand{
  background:transparent;border:1px solid var(--line);color:var(--brand-700);
}
.btn-outline-brand:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--brand-700);padding:0 6px;height:auto;}
.btn-ghost:hover{color:var(--brand-500);}
.btn-sm{height:42px;font-size:14px;padding:0 16px;}
.btn-block{width:100%;}
.btn-cta{height:44px;font-size:14px;padding:0 18px;}

.hamburger{
  width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:var(--surface);color:var(--text-900);display:inline-flex;align-items:center;justify-content:center;font-size:18px;
}
.hamburger:hover{border-color:var(--brand-500);color:var(--brand-700);}

/* ---------- 移动抽屉 ---------- */
.offcanvas{
  width:320px;max-width:88vw;background:var(--surface);border:0;
}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.offcanvas-title{font-size:17px;font-weight:700;}
.drawer-info{
  background:var(--ink-900);color:#A9C4C0;font-size:13px;padding:12px 20px;line-height:1.7;
}
.drawer-info b{color:#DCEAE7;font-weight:500;}
.drawer-nav{padding:8px 0;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 20px;font-size:16px;font-weight:500;color:var(--text-900);
  border-bottom:1px solid var(--line-soft);
}
.drawer-nav a i{color:var(--text-400);font-size:13px;}
.drawer-nav a:hover,.drawer-nav a.active{background:var(--surface-tint);color:var(--brand-700);}
.drawer-nav a.active i{color:var(--brand-500);}
.drawer-foot{padding:18px 20px 28px;}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--surface);border-bottom:1px solid var(--line-soft);}
.crumb{padding:16px 0;font-size:14px;color:var(--text-400);}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb a{color:var(--text-600);}
.crumb a:hover{color:var(--brand-700);}
.crumb .sep{color:#C6D2CF;}
.crumb .current{color:var(--text-400);}

/* ---------- 文章头 ---------- */
.article-hero{padding:52px 0 34px;background:
  radial-gradient(720px 320px at 12% -10%,rgba(18,179,166,.07),transparent 70%),
  linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line-soft);}
.article-hero-inner{max-width:860px;}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-100);color:var(--brand-700);
  font-size:13px;font-weight:500;border-radius:var(--r-xs);
  padding:5px 12px;line-height:1.4;
}
.article-title{
  font-size:36px;font-weight:800;line-height:1.35;margin:18px 0 16px;letter-spacing:-.2px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:14px;color:var(--text-600);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C6D2CF;display:inline-block;}
.article-meta i{color:var(--brand-500);margin-right:5px;}
.article-lede{
  margin-top:20px;font-size:17px;color:var(--text-600);line-height:1.85;
  padding-left:16px;border-left:3px solid var(--brand-500);
}
.cover-wrap{margin-top:30px;}
.cover-wrap img{
  width:100%;height:auto;aspect-ratio:16/7;object-fit:cover;
  border-radius:var(--r-md);box-shadow:var(--shadow-2);background:var(--surface-tint);
}

/* ---------- 正文布局 ---------- */
.article-shell{padding:64px 0 96px;}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start;max-width:1200px;margin:0 auto;}
.article-body{
  font-size:17px;line-height:1.85;color:var(--text-900);max-width:780px;
}
.article-body h2{
  font-size:26px;font-weight:700;line-height:1.4;
  margin:2em 0 .6em;padding-left:14px;position:relative;scroll-margin-top:110px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;background:var(--brand-500);
}
.article-body h3{font-size:20px;font-weight:600;margin:1.6em 0 .55em;scroll-margin-top:110px;}
.article-body h4{font-size:18px;font-weight:600;margin:1.3em 0 .5em;}
.article-body p{margin-bottom:1.15em;}
.article-body ul,.article-body ol{padding-left:1.35em;margin-bottom:1.15em;}
.article-body ul li{list-style:disc;}
.article-body ol li{list-style:decimal;}
.article-body li{margin-bottom:.5em;line-height:1.8;}
.article-body li::marker{color:var(--brand-500);}
.article-body a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.article-body a:hover{color:var(--brand-500);}
.article-body strong{font-weight:600;}
.article-body blockquote{
  margin:1.5em 0;padding:16px 22px;
  border-left:3px solid var(--brand-500);background:var(--surface-tint);
  border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--text-600);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  max-width:100%;height:auto;border-radius:12px;margin:1.7em auto;
  box-shadow:var(--shadow-1);background:var(--surface-tint);
}
.article-body figure{margin:1.7em 0;}
.article-body figcaption{font-size:13px;color:var(--text-400);text-align:center;margin-top:10px;}
.article-body code{
  background:#F1F5F4;color:#0F3B36;padding:2px 6px;border-radius:6px;
  font-size:.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
.article-body pre{
  background:#F1F5F4;color:#123B37;padding:18px 20px;border-radius:8px;overflow-x:auto;
  font-size:14px;line-height:1.7;margin:1.5em 0;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
.article-body pre code{background:none;padding:0;font-size:inherit;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.5em 0;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:var(--surface-tint);font-weight:600;}

/* ---------- 侧栏 ---------- */
.side-col{position:sticky;top:calc(var(--nav-h) + 24px);display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--shadow-1);
}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3 i{color:var(--brand-500);font-size:14px;}
.toc-list{font-size:14px;}
.toc-list a{
  display:block;padding:8px 12px;border-left:2px solid var(--line);color:var(--text-600);border-radius:0 8px 8px 0;
  line-height:1.6;transition:all .2s ease;
}
.toc-list a:hover{background:var(--surface-tint);color:var(--brand-700);border-left-color:var(--brand-500);}
.toc-list a.is-active{background:var(--brand-100);color:var(--brand-700);border-left-color:var(--brand-500);font-weight:600;}
.toc-empty{font-size:14px;color:var(--text-400);line-height:1.8;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:15px;color:var(--text-900);padding:11px 0;border-bottom:1px solid var(--line-soft);
}
.side-links li:last-child a{border-bottom:0;padding-bottom:0;}
.side-links a i{color:var(--text-400);font-size:12px;transition:transform .2s ease;}
.side-links a:hover{color:var(--brand-700);}
.side-links a:hover i{transform:translateX(3px);color:var(--brand-500);}
.side-tip{
  background:var(--ink-900);border-radius:var(--r-md);padding:22px;color:#A9C4C0;font-size:14px;line-height:1.8;
}
.side-tip b{display:block;color:#DCEAE7;font-size:15px;margin-bottom:8px;font-weight:600;}
.side-tip a{color:var(--brand-500);font-weight:600;}
.mobile-toc{display:none;margin-bottom:24px;}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-md);background:var(--surface);
  padding:56px 28px;text-align:center;
}
.empty-state i{font-size:34px;color:var(--brand-500);margin-bottom:16px;display:block;}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--text-600);font-size:15px;margin-bottom:22px;}

/* ---------- 文末区 ---------- */
.article-foot{margin-top:56px;padding-top:32px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:28px;}
.tag-row .label{font-size:14px;color:var(--text-400);}
.tag{
  display:inline-flex;align-items:center;background:var(--brand-100);color:var(--brand-700);
  font-size:13px;font-weight:500;border-radius:999px;padding:6px 14px;transition:all .2s ease;
}
.tag:hover{background:var(--brand-500);color:#fff;}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:28px;}
.pager-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 22px;box-shadow:var(--shadow-1);transition:all .24s ease;
}
.pager-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:rgba(18,179,166,.4);}
.pager-card span{display:block;font-size:13px;color:var(--text-400);margin-bottom:8px;}
.pager-card strong{display:block;font-size:16px;font-weight:600;color:var(--text-900);line-height:1.5;}
.pager-card:hover strong{color:var(--brand-700);}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 96px;}
.section-head{margin-bottom:30px;}
.section-head h2{font-size:28px;font-weight:700;}
.section-head p{margin:10px 0 0;font-size:14px;color:var(--text-600);}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(18,179,166,.35);}
.news-cover{overflow:hidden;background:var(--surface-tint);}
.news-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .24s ease;}
.news-card:hover .news-cover img{transform:scale(1.03);}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.news-body .badge-cat{align-self:flex-start;margin-bottom:12px;}
.news-body h3{font-size:17px;font-weight:600;line-height:1.55;margin-bottom:10px;transition:color .2s ease;}
.news-card:hover .news-body h3{color:var(--brand-700);}
.news-body p{font-size:14px;color:var(--text-600);line-height:1.75;margin-bottom:16px;flex:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-400);border-top:1px solid var(--line-soft);padding-top:14px;}
.news-foot i{color:var(--brand-500);transition:transform .2s ease;}
.news-card:hover .news-foot i{transform:translateX(4px);}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink-900);color:#DCEAE7;padding:84px 0 88px;
  background-image:radial-gradient(600px 300px at 80% 0%,rgba(18,179,166,.18),transparent 70%);
}
.cta-inner{max-width:720px;margin:0 auto;text-align:center;}
.cta-inner h2{color:#fff;font-size:30px;font-weight:800;line-height:1.35;}
.cta-inner p{color:#A9C4C0;font-size:16px;margin:16px 0 28px;}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;}
.cta-band .btn-outline-brand{color:#DCEAE7;border-color:rgba(220,234,231,.35);}
.cta-band .btn-outline-brand:hover{background:rgba(18,179,166,.16);border-color:var(--brand-500);color:#fff;}

/* ---------- 浮动 CTA（文章页降级） ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1035;
  width:52px;height:52px;border-radius:50%;border:0;
  background:var(--accent-500);color:#fff;font-size:20px;
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-2);cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s ease,transform .24s ease,visibility .24s;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:#EF5A2B;transform:translateY(-2px);box-shadow:var(--shadow-3);}
.float-cta:active{transform:translateY(0);}
.float-panel{
  position:fixed;right:24px;bottom:88px;z-index:1035;
  width:230px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--shadow-3);padding:14px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
}
.float-panel.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-panel a{
  display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-900);
  padding:10px 8px;border-radius:var(--r-sm);transition:background-color .2s ease,color .2s ease;
}
.float-panel a:hover{background:var(--surface-tint);color:var(--brand-700);}
.float-panel a i{color:var(--brand-500);width:16px;text-align:center;}
.float-panel .panel-cta{margin-top:8px;padding-top:10px;border-top:1px solid var(--line-soft);}
.float-panel .panel-cta a{background:var(--brand-500);color:#fff;justify-content:center;font-weight:600;}
.float-panel .panel-cta a i{color:#fff;}
.float-panel .panel-cta a:hover{background:var(--brand-700);color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);color:#9FBCB8;font-size:14px;
  border-top:3px solid var(--brand-500);
  padding:64px 0 32px;position:relative;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{
  width:34px;height:34px;font-size:16px;border-radius:8px;
  background:linear-gradient(150deg,var(--brand-500),var(--brand-700));
}
.footer-brand b{color:#E7F2F0;font-size:17px;font-weight:700;}
.footer-col p{color:#8FA9A5;font-size:14px;line-height:1.85;margin-bottom:14px;}
.footer-col h4{color:#E7F2F0;font-size:15px;font-weight:600;margin-bottom:18px;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{color:#9FBCB8;font-size:14px;display:inline-block;transition:color .2s ease,transform .2s ease;}
.footer-col ul a:hover{color:var(--brand-500);transform:translateX(4px);}
.footer-contact{display:flex;align-items:center;gap:9px;color:#8FA9A5;font-size:13px;margin-top:8px;}
.footer-contact i{color:var(--brand-500);font-size:13px;}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:#7C9592;
}
.footer-bottom a{color:#7C9592;}
.footer-bottom a:hover{color:var(--brand-500);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-grid{grid-template-columns:minmax(0,1fr);gap:0;}
  .side-col{display:none;}
  .mobile-toc{display:block;}
  .article-body{max-width:none;}
}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .article-title{font-size:30px;}
  .article-body{font-size:16px;}
  .article-body h2{font-size:23px;}
  .article-body h3{font-size:19px;}
  .cta-inner h2{font-size:25px;}
}
@media (max-width:767.98px){
  .article-hero{padding:38px 0 26px;}
  .article-title{font-size:27px;margin:14px 0 14px;}
  .article-shell{padding:44px 0 64px;}
  .related{padding-bottom:64px;}
  .cta-band{padding:60px 0 64px;}
  .pager{grid-template-columns:1fr;gap:14px;}
  .section-head h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:575.98px){
  .container{padding-left:20px;padding-right:20px;}
  .card-grid{grid-template-columns:1fr;}
  .article-title{font-size:24px;}
  .brand-text{font-size:17px;}
  .topbar{font-size:12px;}
  .float-cta{right:16px;bottom:16px;width:48px;height:48px;font-size:18px;}
  .float-panel{right:16px;left:16px;width:auto;bottom:76px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category1 */
:root{
  --brand-500:#12B3A6;
  --brand-700:#0B7C6C;
  --brand-100:#D9F2EE;
  --accent-500:#FF6B3D;
  --gold-400:#FFC94D;
  --bg:#FBF9F6;
  --surface:#FFFFFF;
  --surface-tint:#EFF7F5;
  --ink-900:#0C1B1C;
  --text-900:#121A19;
  --text-600:#4B5B58;
  --text-400:#8C9B98;
  --line:#E4EBE9;
  --line-soft:#EFF3F2;
  --ok:#1F9D6B;
  --warn:#E0940B;
  --err:#D9483B;
  --r-xs:6px;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --shadow-1:0 1px 2px rgba(12,27,28,.06);
  --shadow-2:0 6px 20px -6px rgba(12,27,28,.12);
  --shadow-3:0 18px 48px -18px rgba(12,27,28,.22);
  --container:1200px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--text-900);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,transform .2s ease;}
a:hover{color:var(--brand-500);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.3;color:var(--text-900);}
h1{font-size:44px;font-weight:800;letter-spacing:-.5px;}
h2{font-size:32px;font-weight:700;}
h3{font-size:22px;font-weight:600;}
h4{font-size:18px;font-weight:600;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%;}
@media (min-width:1400px){.container{max-width:1280px;}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink-900);color:#CFE3E0;font-size:13px;line-height:1;min-height:38px;display:flex;align-items:center;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:11px;padding-bottom:11px;}
.topbar-left{display:flex;align-items:center;gap:10px;min-width:0;color:#A9C4C0;}
.topbar-left i{color:var(--brand-500);font-size:13px;}
.topbar-left span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-domain{color:#7C9592;border-left:1px solid #24413E;padding-left:10px;}
.topbar-link{color:#D9F2EE;display:inline-flex;align-items:center;gap:6px;white-space:nowrap;font-weight:600;}
.topbar-link:hover{color:var(--brand-500);}
.topbar-link i{transition:transform .2s ease;}
.topbar-link:hover i{transform:translateX(3px);}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:var(--shadow-2);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:70px;}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;}
.brand-mark{
  width:36px;height:36px;border-radius:9px;
  background:linear-gradient(140deg,var(--brand-500),var(--brand-700));
  color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:16px;
  box-shadow:var(--shadow-1);
}
.brand-text{font-size:19px;font-weight:700;color:var(--text-900);letter-spacing:-.2px;}
.brand-text b{color:var(--brand-700);font-weight:700;}
.main-nav{display:flex;align-items:center;gap:28px;}
.main-nav a{
  position:relative;font-size:15px;font-weight:500;color:var(--text-600);padding:6px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand-500);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.main-nav a:hover{color:var(--brand-700);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{color:var(--brand-700);font-weight:600;}
.main-nav a.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}

/* ---------- 按钮 ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1.5;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn-x i{font-size:14px;}
.btn-primary-x{background:var(--brand-500);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary-x:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary-x:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn-ghost-x{background:transparent;color:var(--brand-700);border-color:var(--line);}
.btn-ghost-x:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-1px);}
.btn-accent-x{background:var(--accent-500);color:#fff;box-shadow:var(--shadow-2);}
.btn-accent-x:hover{background:#F0552A;color:#fff;transform:translateY(-1px);}
.btn-x:disabled,.btn-x.disabled{opacity:.48;cursor:not-allowed;}
.btn-sm-x{height:40px;padding:0 16px;font-size:14px;}
.btn-lg-x{height:52px;padding:0 28px;font-size:16px;}
.link-x{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
.link-x i{transition:transform .2s ease;}
.link-x:hover{color:var(--brand-500);}
.link-x:hover i{transform:translateX(4px);}
.hamburger{
  width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);background:#fff;
  color:var(--text-900);display:inline-flex;align-items:center;justify-content:center;font-size:17px;
}
.hamburger:hover{border-color:var(--brand-500);color:var(--brand-700);}

/* ---------- 移动抽屉 ---------- */
.offcanvas{border:0;width:88vw;max-width:360px;}
.offcanvas-header{border-bottom:1px solid var(--line);padding:16px 20px;}
.offcanvas-body{padding:0 0 24px;}
.drawer-strip{background:var(--ink-900);color:#A9C4C0;font-size:13px;padding:14px 20px;line-height:1.7;}
.drawer-strip b{color:var(--brand-500);}
.drawer-nav{padding:8px 0;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 20px;font-size:16px;color:var(--text-900);border-bottom:1px solid var(--line-soft);
}
.drawer-nav a i{color:var(--text-400);font-size:13px;}
.drawer-nav a:hover,.drawer-nav a.active{background:var(--surface-tint);color:var(--brand-700);}
.drawer-nav a.active{font-weight:600;}
.drawer-cta{padding:20px;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:20px 0 4px;}
.breadcrumb-x{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-400);}
.breadcrumb-x a{color:var(--text-600);}
.breadcrumb-x a:hover{color:var(--brand-700);}
.breadcrumb-x .sep{color:#C3CFCD;}
.breadcrumb-x .current{color:var(--text-400);}

/* ---------- 页头区 ---------- */
.page-head{padding:28px 0 64px;}
.page-head-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--brand-700);background:var(--brand-100);border-radius:var(--r-xs);padding:6px 12px;margin-bottom:18px;
}
.page-head h1{font-size:42px;margin-bottom:18px;}
.page-head h1 em{font-style:normal;color:var(--brand-700);}
.page-head .lead{font-size:18px;color:var(--text-600);max-width:56ch;}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.head-note{font-size:13px;color:var(--text-400);margin-top:14px;}
.head-media{position:relative;}
.head-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--shadow-3);
  background:var(--surface-tint);
}
.head-badge{
  position:absolute;left:-14px;bottom:22px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--shadow-2);padding:12px 16px;display:flex;align-items:center;gap:10px;
}
.head-badge i{color:var(--brand-500);font-size:18px;}
.head-badge span{font-size:14px;font-weight:600;color:var(--text-900);line-height:1.4;}
.head-badge small{display:block;font-size:12px;font-weight:400;color:var(--text-400);}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-tint{background:var(--surface-tint);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .kicker{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--brand-500);text-transform:uppercase;margin-bottom:12px;}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--text-600);font-size:16px;}
.rule{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- 左文右图分块 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split + .split{margin-top:80px;padding-top:80px;border-top:1px solid var(--line);}
.split-media img{
  width:100%;aspect-ratio:8/5;object-fit:cover;border-radius:var(--r-md);
  border:1px solid var(--line);box-shadow:var(--shadow-2);background:var(--surface-tint);
}
.split-num{
  font-size:20px;font-weight:800;color:var(--brand-500);
  display:inline-flex;align-items:center;gap:10px;margin-bottom:14px;
}
.split-num::after{content:"";width:36px;height:2px;background:var(--brand-100);border-radius:2px;}
.split h3{font-size:24px;margin-bottom:14px;}
.split p{color:var(--text-600);}
.check-list{margin-top:18px;display:grid;gap:10px;}
.check-list li{display:flex;gap:10px;font-size:15.5px;color:var(--text-600);line-height:1.7;}
.check-list li i{color:var(--brand-500);font-size:14px;margin-top:6px;flex:0 0 auto;}
.check-list li b{color:var(--text-900);font-weight:600;}

/* ---------- 步骤 ---------- */
.steps{counter-reset:st;display:grid;gap:0;}
.step{
  display:grid;grid-template-columns:56px 1fr;gap:20px;
  padding:26px 0;border-bottom:1px solid var(--line-soft);
}
.step:last-child{border-bottom:0;padding-bottom:0;}
.step:first-child{padding-top:0;}
.step-dot{
  width:44px;height:44px;border-radius:50%;border:1.5px solid var(--brand-500);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;background:#fff;
}
.step.is-on .step-dot{background:var(--brand-500);color:#fff;}
.step h4{margin-bottom:8px;}
.step p{font-size:15.5px;color:var(--text-600);}

/* ---------- 速览卡 ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.quick-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:24px;
  box-shadow:var(--shadow-1);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.quick-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(18,179,166,.4);}
.quick-card .q-icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-100);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px;
}
.quick-card h4{font-size:17px;margin-bottom:8px;}
.quick-card p{font-size:14.5px;color:var(--text-600);line-height:1.75;}
.badge-x{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:500;
  background:var(--brand-100);color:var(--brand-700);border-radius:var(--r-xs);padding:4px 10px;line-height:1.5;
}
.badge-warn{background:#FFF3DE;color:#8A5A00;}

/* ---------- 对比双栏 ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-card{border:1px solid var(--line);border-radius:var(--r-md);background:#fff;padding:28px;box-shadow:var(--shadow-1);}
.compare-card.good{border-color:rgba(18,179,166,.45);box-shadow:var(--shadow-2);}
.compare-card.bad{border-color:#F0DCD8;}
.compare-card h4{display:flex;align-items:center;gap:10px;margin-bottom:16px;font-size:18px;}
.compare-card.good h4 i{color:var(--brand-500);}
.compare-card.bad h4 i{color:var(--err);}
.compare-card li{display:flex;gap:10px;font-size:15px;color:var(--text-600);padding:9px 0;border-bottom:1px dashed var(--line);line-height:1.7;}
.compare-card li:last-child{border-bottom:0;}
.compare-card.good li i{color:var(--brand-500);margin-top:6px;font-size:13px;}
.compare-card.bad li i{color:#C9A39C;margin-top:6px;font-size:13px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:12px !important;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow-1);
}
.accordion-item:last-child{margin-bottom:0;}
.accordion-button{
  background:#fff;color:var(--text-900);font-size:17px;font-weight:500;line-height:1.6;
  padding:20px 22px;box-shadow:none !important;border:0;position:relative;
}
.accordion-button::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand-500);
  transform:scaleY(0);transform-origin:top;transition:transform .22s ease;
}
.accordion-button:not(.collapsed){color:var(--brand-700);font-weight:600;background:var(--surface-tint);}
.accordion-button:not(.collapsed)::before{transform:scaleY(1);}
.accordion-button::after{
  background-image:none;content:"+";font-family:inherit;font-size:22px;font-weight:400;color:var(--brand-700);
  width:26px;height:26px;display:flex;align-items:center;justify-content:center;
  transform:none;transition:transform .22s ease;line-height:1;
}
.accordion-button:not(.collapsed)::after{content:"−";transform:rotate(180deg);}
.accordion-body{padding:4px 22px 22px;font-size:15.5px;color:var(--text-600);line-height:1.85;}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink-900);color:#DCE9E7;padding:88px 0;}
.cta-inner{max-width:760px;margin:0 auto;text-align:center;}
.cta-band h2{color:#fff;font-size:34px;margin-bottom:16px;}
.cta-band p{color:#A9C4C0;font-size:16.5px;margin-bottom:30px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.cta-band .btn-ghost-x{color:#D9F2EE;border-color:#2A4A47;background:transparent;}
.cta-band .btn-ghost-x:hover{background:rgba(18,179,166,.14);border-color:var(--brand-500);color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:#A9C4C0;padding-top:64px;position:relative;}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--brand-500);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(18,179,166,.16);color:var(--brand-500);}
.footer-brand b{color:#fff;font-size:17px;font-weight:700;}
.footer-col p{font-size:14px;color:#8FA9A6;line-height:1.85;margin-bottom:14px;}
.footer-contact{display:flex;align-items:center;gap:9px;font-size:13.5px;color:#8FA9A6;margin-bottom:8px;}
.footer-contact i{color:var(--brand-500);font-size:13px;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14.5px;color:#A9C4C0;display:inline-block;transition:transform .2s ease,color .2s ease;}
.footer-col ul li a:hover{color:var(--brand-500);transform:translateX(4px);}
.footer-bottom{
  border-top:1px solid #1B3331;padding:24px 0 32px;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;font-size:13.5px;color:#7C9592;
}
.footer-bottom a{color:#A9C4C0;}
.footer-bottom a:hover{color:var(--brand-500);}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  background:var(--accent-500);color:#fff;border:0;border-radius:999px;height:52px;padding:0 22px;
  display:inline-flex;align-items:center;gap:9px;font-size:15px;font-weight:600;
  box-shadow:0 12px 30px -10px rgba(255,107,61,.7);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .24s ease,transform .24s ease,visibility .24s ease,background-color .2s ease;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:#F0552A;color:#fff;transform:translateY(-2px);}
.float-panel{
  position:fixed;right:24px;bottom:88px;z-index:1040;width:270px;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-3);padding:16px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
}
.float-panel.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-panel h5{margin:0 0 12px;font-size:14px;font-weight:600;color:var(--text-900);}
.float-panel a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:9px 0;font-size:14px;color:var(--text-600);border-bottom:1px solid var(--line-soft);
}
.float-panel a:last-of-type{border-bottom:0;}
.float-panel a:hover{color:var(--brand-700);}
.float-panel .panel-btn{margin-top:12px;width:100%;}
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:1040;background:rgba(255,255,255,.97);
  border-top:1px solid var(--line);padding:8px 16px calc(8px + env(safe-area-inset-bottom));
  gap:10px;align-items:center;box-shadow:0 -6px 20px -12px rgba(12,27,28,.28);
}
.mobile-bar .btn-x{flex:1;height:46px;}
.mobile-bar .btn-x.icon-only{flex:0 0 46px;padding:0;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .quick-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991.98px){
  h1{font-size:32px;}
  h2{font-size:26px;}
  .page-head h1{font-size:32px;}
  .page-head{padding:20px 0 48px;}
  .page-head-grid{grid-template-columns:1fr;gap:32px;}
  .head-media{order:2;}
  .head-media img{aspect-ratio:16/9;}
  .head-badge{left:12px;bottom:12px;}
  .section{padding:72px 0;}
  .split{grid-template-columns:1fr;gap:28px;}
  .split + .split{margin-top:56px;padding-top:56px;}
  .split-media{order:2;}
  .cta-band{padding:64px 0;}
  .cta-band h2{font-size:26px;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .topbar-domain{display:none;}
  .topbar-left span{font-size:12.5px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .compare{grid-template-columns:1fr;}
  .quick-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .float-cta,.float-panel{display:none;}
  .mobile-bar{display:flex;}
  body{padding-bottom:64px;}
  .step{grid-template-columns:44px 1fr;gap:14px;}
  .step-dot{width:38px;height:38px;font-size:14px;}
  .head-badge{padding:10px 12px;}
}
@media (max-width:520px){
  h1,.page-head h1{font-size:28px;}
  h2{font-size:23px;}
  .split h3{font-size:20px;}
  .btn-x{width:100%;}
  .cta-actions .btn-x{width:100%;}
  .head-actions .btn-x{width:100%;}
}

/* roulang page: category3 */
:root{
  --brand-500:#12B3A6;
  --brand-700:#0B7C6C;
  --brand-100:#D9F2EE;
  --accent-500:#FF6B3D;
  --gold-400:#FFC94D;
  --bg:#FBF9F6;
  --surface:#FFFFFF;
  --surface-tint:#EFF7F5;
  --ink-900:#0C1B1C;
  --text-900:#121A19;
  --text-600:#4B5B58;
  --text-400:#8C9B98;
  --line:#E4EBE9;
  --line-soft:#EFF3F2;
  --ok:#1F9D6B;
  --warn:#E0940B;
  --err:#D9483B;
  --r-xs:6px;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --shadow-1:0 1px 2px rgba(12,27,28,.06);
  --shadow-2:0 6px 20px -6px rgba(12,27,28,.12);
  --shadow-3:0 18px 48px -18px rgba(12,27,28,.22);
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.85;
  color:var(--text-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-500);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text-900);line-height:1.3;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto;}
@media (min-width:1400px){.container{max-width:1280px;}}
@media (max-width:575.98px){.container{padding-left:20px;padding-right:20px;}}

/* ---------- 顶部信息条 ---------- */
.top-bar{
  background:var(--ink-900);
  color:#B9CFCC;
  font-size:13px;
  line-height:1;
  padding:11px 0;
}
.top-bar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.top-bar-left{display:flex;align-items:center;gap:10px;min-width:0;}
.top-bar-left i{color:var(--brand-500);}
.top-bar-left span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.top-bar-left .dot{width:4px;height:4px;border-radius:50%;background:#3C5553;flex:0 0 auto;}
.top-bar-right{display:flex;align-items:center;gap:18px;flex:0 0 auto;}
.top-bar-right a{color:#D8E7E5;display:inline-flex;align-items:center;gap:6px;}
.top-bar-right a:hover{color:var(--brand-500);}
.top-bar .domain{color:#7C9592;}
@media (max-width:767.98px){
  .top-bar{font-size:12px;}
  .top-bar-left .hide-sm{display:none;}
  .top-bar-right .hide-sm{display:none;}
}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s ease;
}
.site-header.scrolled{box-shadow:var(--shadow-2);}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:70px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-900);font-weight:700;font-size:18px;letter-spacing:.01em;}
.brand:hover{color:var(--text-900);}
.brand-mark{
  width:38px;height:38px;border-radius:var(--r-sm);
  background:linear-gradient(140deg,var(--brand-500),var(--brand-700));
  color:#fff;display:grid;place-items:center;font-size:17px;
  box-shadow:var(--shadow-1);
}
.brand-text b{color:var(--brand-700);font-weight:800;}
.main-nav{display:flex;align-items:center;gap:28px;}
.main-nav a{
  position:relative;
  color:var(--text-600);
  font-size:15px;
  font-weight:500;
  padding:6px 0;
  line-height:1.5;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;
  background:var(--brand-500);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease;
}
.main-nav a:hover{color:var(--brand-700);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{color:var(--brand-700);font-weight:600;}
.main-nav a.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}

.btn{
  border-radius:var(--r-sm);
  font-weight:600;
  font-size:15px;
  line-height:1.5;
  padding:12px 22px;
  border:1px solid transparent;
  transition:all .22s ease;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
}
.btn:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
.btn-brand{background:var(--brand-500);color:#fff;box-shadow:var(--shadow-1);}
.btn-brand:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-brand:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-700);}
.btn-accent{background:var(--accent-500);color:#fff;}
.btn-accent:hover{background:#E85829;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-lg{padding:14px 28px;font-size:16px;min-height:48px;}
.btn-block{width:100%;}
.btn-light-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.28);}
.btn-light-ghost:hover{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.5);}

.nav-toggle{
  width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:#fff;color:var(--text-900);
  display:grid;place-items:center;font-size:18px;
}
.nav-toggle:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-700);}

/* 抽屉 */
.offcanvas{background:var(--surface);}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.offcanvas-title{font-size:16px;font-weight:700;}
.drawer-info{
  background:var(--ink-900);color:#B9CFCC;font-size:13px;line-height:1.7;
  padding:14px 20px;
}
.drawer-info i{color:var(--brand-500);margin-right:6px;}
.drawer-nav{list-style:none;padding:8px 0;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 20px;font-size:16px;color:var(--text-900);font-weight:500;
  border-bottom:1px solid var(--line-soft);
}
.drawer-nav a i{color:var(--text-400);font-size:13px;}
.drawer-nav a.active{color:var(--brand-700);background:var(--brand-100);font-weight:600;}
.drawer-nav a.active i{color:var(--brand-700);}
.drawer-cta{padding:18px 20px 26px;}

/* ---------- 面包屑 ---------- */
.breadcrumb-wrap{padding:20px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;font-size:14px;color:var(--text-400);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"›";color:var(--text-400);}
.crumb a{color:var(--text-600);}
.crumb a:hover{color:var(--brand-500);}
.crumb li[aria-current]{color:var(--text-400);}

/* ---------- 页头 ---------- */
.page-hero{
  padding:40px 0 72px;
  background:
    radial-gradient(680px 320px at 88% 8%, rgba(18,179,166,.07), transparent 70%),
    var(--bg);
  position:relative;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(12,27,28,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(12,27,28,.035) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.5),transparent 76%);
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.5),transparent 76%);
}
.page-hero .container{position:relative;z-index:1;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-100);color:var(--brand-700);
  font-size:13px;font-weight:600;line-height:1;
  padding:8px 14px;border-radius:999px;margin-bottom:18px;
}
.page-hero h1{
  font-size:44px;font-weight:800;line-height:1.25;letter-spacing:-.01em;
  margin-bottom:18px;
}
.page-hero .lead{
  font-size:18px;color:var(--text-600);line-height:1.8;max-width:620px;margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;list-style:none;font-size:14px;color:var(--text-600);}
.hero-meta li{display:flex;align-items:center;gap:8px;}
.hero-meta i{color:var(--brand-500);}
.hero-figure{
  margin:0;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--shadow-3);border:1px solid var(--line);
  background:var(--surface-tint);
  position:relative;
}
.hero-figure img{width:100%;height:340px;object-fit:cover;}
.hero-figure figcaption{
  position:absolute;left:16px;bottom:16px;
  background:rgba(255,255,255,.94);border-radius:var(--r-xs);
  font-size:13px;color:var(--text-600);padding:8px 12px;box-shadow:var(--shadow-1);
}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-tint{background:var(--surface-tint);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{font-size:32px;font-weight:700;margin-bottom:14px;}
.section-head p{font-size:17px;color:var(--text-600);margin:0;}
.section-head .eyebrow{margin-bottom:16px;}
@media (max-width:991.98px){
  .section{padding:76px 0;}
  .section-head{margin-bottom:36px;}
  .section-head h2{font-size:27px;}
  .page-hero h1{font-size:34px;}
}
@media (max-width:575.98px){
  .section{padding:58px 0;}
  .page-hero{padding:28px 0 54px;}
  .page-hero h1{font-size:29px;}
  .page-hero .lead{font-size:16px;}
  .hero-figure img{height:230px;}
}

/* ---------- 编号步骤竖列 ---------- */
.step-list{list-style:none;max-width:940px;}
.step-item{
  display:grid;grid-template-columns:88px minmax(0,1fr);gap:30px;
  position:relative;padding-bottom:52px;
}
.step-item:last-child{padding-bottom:0;}
.step-item::before{
  content:"";position:absolute;left:43px;top:96px;bottom:6px;width:1px;background:var(--line);
}
.step-item:last-child::before{display:none;}
.step-num{
  width:88px;height:88px;border-radius:var(--r-lg);
  display:grid;place-items:center;
  background:var(--surface);border:1px solid var(--line);
  color:var(--brand-700);font-size:28px;font-weight:800;
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
  box-shadow:var(--shadow-1);
}
.step-body h3{font-size:22px;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:10px;}
.step-body h3 i{color:var(--brand-500);font-size:18px;}
.step-body>p{font-size:17px;color:var(--text-600);max-width:700px;}
.point-list{list-style:none;margin-top:18px;display:grid;gap:10px;}
.point-list li{
  position:relative;padding-left:28px;font-size:16px;line-height:1.8;color:var(--text-900);
}
.point-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:14px;height:14px;border-radius:50%;
  background:var(--brand-100);
  box-shadow:inset 0 0 0 1.5px var(--brand-500);
}
.point-list li b{font-weight:600;}
.step-note{
  margin-top:18px;padding:16px 18px;
  background:var(--surface-tint);border-left:3px solid var(--brand-500);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  font-size:15px;color:var(--text-600);
}
.step-note b{color:var(--text-900);font-weight:600;}
@media (max-width:767.98px){
  .step-item{grid-template-columns:60px minmax(0,1fr);gap:18px;padding-bottom:40px;}
  .step-item::before{left:29px;top:66px;}
  .step-num{width:60px;height:60px;border-radius:var(--r-md);font-size:20px;}
  .step-body h3{font-size:20px;}
  .step-body>p{font-size:16px;}
}

/* ---------- 速览卡 ---------- */
.mini-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 24px;height:100%;box-shadow:var(--shadow-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(18,179,166,.45);}
.mini-card .mini-icon{
  width:44px;height:44px;border-radius:var(--r-sm);
  background:var(--brand-100);color:var(--brand-700);
  display:grid;place-items:center;font-size:18px;margin-bottom:16px;
}
.mini-card h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.mini-card p{font-size:15px;color:var(--text-600);margin-bottom:14px;}
.mini-tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:500;color:var(--brand-700);
  background:var(--brand-100);border-radius:var(--r-xs);padding:5px 10px;
}
.mini-tag.warn{color:#9B6A00;background:#FDF3DC;}
.mini-tag.ok{color:#146F4C;background:#E1F4EC;}

/* ---------- 对照条 ---------- */
.compare-strip{
  margin-top:56px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:32px;box-shadow:var(--shadow-1);
}
.compare-strip h3{font-size:20px;font-weight:700;margin-bottom:20px;}
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.compare-cell{border-radius:var(--r-md);padding:22px;border:1px solid var(--line);}
.compare-cell.good{background:var(--surface-tint);border-color:rgba(18,179,166,.35);}
.compare-cell.bad{background:#FCF5F3;border-color:rgba(217,72,59,.22);}
.compare-cell h4{font-size:16px;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:8px;}
.compare-cell.good h4 i{color:var(--ok);}
.compare-cell.bad h4 i{color:var(--err);}
.compare-cell ul{list-style:none;display:grid;gap:9px;}
.compare-cell li{font-size:15px;color:var(--text-600);padding-left:18px;position:relative;line-height:1.75;}
.compare-cell li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;background:var(--text-400);}
.compare-cell.good li::before{background:var(--brand-500);}
.compare-cell.bad li::before{background:#E0A79E;}
@media (max-width:767.98px){
  .compare-strip{padding:22px;}
  .compare-grid{grid-template-columns:1fr;}
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.accordion-item{
  background:var(--surface);border:1px solid var(--line) !important;
  border-radius:var(--r-md) !important;margin-bottom:12px;overflow:hidden;
  box-shadow:var(--shadow-1);
}
.accordion-button{
  background:var(--surface);color:var(--text-900);
  font-size:16px;font-weight:500;line-height:1.6;
  padding:20px 22px;border-left:3px solid transparent;
  box-shadow:none !important;transition:all .24s ease;
}
.accordion-button:not(.collapsed){
  background:var(--surface-tint);color:var(--brand-700);
  font-weight:600;border-left-color:var(--brand-500);
}
.accordion-button:focus-visible{outline:2px solid var(--brand-500);outline-offset:-2px;}
.accordion-button::after{
  background-image:none;content:"+";
  font-size:22px;font-weight:400;line-height:1;color:var(--brand-500);
  width:24px;height:24px;display:grid;place-items:center;
  transform:none;transition:transform .24s ease;flex:0 0 auto;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--brand-700);}
.accordion-body{
  padding:4px 22px 22px;font-size:16px;color:var(--text-600);line-height:1.85;
  border-left:3px solid var(--brand-500);background:var(--surface);
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;background:var(--ink-900);color:#E6F1EF;
  padding:80px 0 88px;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.16;
}
.cta-band .container{position:relative;z-index:1;text-align:center;}
.cta-band h2{color:#fff;font-size:32px;font-weight:800;margin-bottom:16px;}
.cta-band p{max-width:640px;margin:0 auto 30px;color:#B9CFCC;font-size:17px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}
.cta-hint{margin-top:18px;font-size:13px;color:#7C9592;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);color:#B9CFCC;
  border-top:3px solid var(--brand-500);
  padding-top:64px;padding-bottom:32px;
  font-size:15px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;margin-bottom:16px;}
.footer-brand .brand-mark{width:34px;height:34px;font-size:15px;}
.footer-brand b{font-weight:800;}
.footer-col p{color:#8FA9A6;font-size:14px;line-height:1.85;margin-bottom:14px;}
.footer-contact{display:flex;align-items:center;gap:8px;font-size:14px;color:#8FA9A6;margin-bottom:8px;}
.footer-contact i{color:var(--brand-500);width:16px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;}
.footer-col ul{list-style:none;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{color:#8FA9A6;font-size:14px;display:inline-block;transition:all .22s ease;}
.footer-col ul a:hover{color:var(--brand-500);transform:translateX(4px);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding-top:24px;font-size:13px;color:#7C9592;
}
.footer-bottom a{color:#8FA9A6;}
.footer-bottom a:hover{color:var(--brand-500);}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding-top:48px;}
}

/* ---------- 浮动 CTA ---------- */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:1040;}
.float-toggle{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--accent-500);color:#fff;border:none;
  border-radius:999px;padding:14px 22px;
  font-size:15px;font-weight:600;line-height:1;
  box-shadow:var(--shadow-3);
  transition:all .22s ease;opacity:0;transform:translateY(12px);pointer-events:none;
}
.float-cta.visible .float-toggle{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-toggle:hover{background:#E85829;transform:translateY(-2px);}
.float-toggle:focus-visible{outline:2px solid #fff;outline-offset:2px;}
.float-panel{
  position:absolute;right:0;bottom:64px;width:266px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-3);padding:10px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:all .22s ease;
}
.float-cta.open .float-panel{opacity:1;visibility:visible;transform:translateY(0);}
.float-panel a{
  display:flex;align-items:center;justify-content:space-between;
  padding:11px 12px;border-radius:var(--r-sm);font-size:14px;color:var(--text-900);
}
.float-panel a:hover{background:var(--surface-tint);color:var(--brand-700);}
.float-panel a i{color:var(--brand-500);font-size:12px;}
.float-panel .btn{margin-top:8px;}
.float-mobile{
  display:none;
}
@media (max-width:767.98px){
  .float-cta{
    right:0;left:0;bottom:0;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:rgba(255,255,255,.96);
    backdrop-filter:blur(8px);
    border-top:1px solid var(--line);
    display:flex;gap:10px;align-items:center;
    transform:translateY(110%);transition:transform .24s ease;
  }
  .float-cta.visible{transform:translateY(0);}
  .float-cta .float-toggle,
  .float-cta .float-panel{display:none;}
  .float-mobile{display:flex;gap:10px;width:100%;}
  .float-mobile .btn{flex:1;min-height:48px;padding:12px 14px;font-size:15px;}
}

/* roulang page: category2 */
:root{
  --brand-500:#12B3A6;
  --brand-700:#0B7C6C;
  --brand-100:#D9F2EE;
  --accent-500:#FF6B3D;
  --gold-400:#FFC94D;
  --bg:#FBF9F6;
  --surface:#FFFFFF;
  --surface-tint:#EFF7F5;
  --ink-900:#0C1B1C;
  --text-900:#121A19;
  --text-600:#4B5B58;
  --text-400:#8C9B98;
  --line:#E4EBE9;
  --line-soft:#EFF3F2;
  --ok:#1F9D6B;
  --warn:#E0940B;
  --err:#D9483B;
  --r-xs:6px;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --shadow-1:0 1px 2px rgba(12,27,28,.06);
  --shadow-2:0 6px 20px -6px rgba(12,27,28,.12);
  --shadow-3:0 18px 48px -18px rgba(12,27,28,.22);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}
*,
*::before,
*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--text-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-500);}
h1,h2,h3,h4,h5{margin:0 0 14px;line-height:1.3;color:var(--text-900);letter-spacing:.005em;}
h1{font-weight:800;}
h2{font-weight:700;font-size:32px;}
h3{font-weight:600;font-size:22px;}
h4{font-weight:600;font-size:18px;}
p{margin:0 0 1.15em;}
ul{margin:0 0 1.15em;padding-left:0;list-style:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px;}
.container{max-width:1200px;padding-left:24px;padding-right:24px;}
@media (min-width:1400px){.container{max-width:1280px;}}
section{position:relative;}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--ink-900);
  color:#C9DAD7;
  font-size:13px;
  line-height:1;
  padding:11px 0;
}
.topbar .inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  white-space:nowrap;
  overflow:hidden;
}
.topbar .tb-left{display:flex;align-items:center;gap:10px;min-width:0;overflow:hidden;text-overflow:ellipsis;}
.topbar .tb-left i{color:var(--brand-500);}
.topbar .tb-left span{overflow:hidden;text-overflow:ellipsis;}
.topbar a{color:#E7F4F1;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.topbar a:hover{color:var(--brand-500);}
.topbar a i{font-size:11px;}
@media (max-width:575.98px){
  .topbar{font-size:12px;padding:10px 0;}
  .topbar .tb-left span.tb-extra{display:none;}
}

/* ---------- 主导航 ---------- */
.site-head{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s ease;
}
.site-head.is-stuck{box-shadow:var(--shadow-2);}
.nav-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:70px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  color:var(--text-900);
  font-weight:700;
  font-size:19px;
  letter-spacing:0;
  flex-shrink:0;
}
.brand:hover{color:var(--text-900);}
.brand .brand-mark{
  width:38px;height:38px;
  border-radius:var(--r-sm);
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));
  color:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:17px;
  box-shadow:var(--shadow-2);
}
.brand small{
  display:block;
  font-size:11px;
  font-weight:500;
  color:var(--text-400);
  letter-spacing:.08em;
  line-height:1.2;
}
.main-nav{display:flex;align-items:center;gap:28px;}
.main-nav a{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--text-600);
  padding:6px 0;
  white-space:nowrap;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--brand-500);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.main-nav a:hover{color:var(--brand-700);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{color:var(--brand-700);font-weight:600;}
.main-nav a.active::after{transform:scaleX(1);}
.nav-cta{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.hamburger{
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:#fff;
  color:var(--text-900);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:18px;
}
.hamburger:hover{border-color:var(--brand-500);color:var(--brand-700);}

/* 抽屉 */
.offcanvas{background:var(--surface);}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.drawer-info{
  background:var(--ink-900);
  color:#C9DAD7;
  font-size:13px;
  padding:14px 20px;
  line-height:1.6;
}
.drawer-info b{color:#fff;display:block;margin-bottom:2px;}
.drawer-nav{padding:8px 0 4px;}
.drawer-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:52px;
  padding:0 20px;
  font-size:16px;
  font-weight:500;
  color:var(--text-900);
  border-bottom:1px solid var(--line-soft);
}
.drawer-nav a i{color:var(--text-400);font-size:13px;}
.drawer-nav a.active{color:var(--brand-700);background:var(--surface-tint);}
.drawer-nav a.active i{color:var(--brand-500);}
.drawer-cta{padding:18px 20px 26px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-weight:600;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  transition:all .22s ease;
  line-height:1.5;
}
.btn-brand,.btn-primary{
  background:var(--brand-500);
  border-color:var(--brand-500);
  color:#fff;
  height:48px;
  padding:0 24px;
  font-size:16px;
}
.btn-brand:hover,.btn-primary:hover,.btn-brand:focus,.btn-primary:focus{
  background:var(--brand-700);
  border-color:var(--brand-700);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:var(--shadow-2);
}
.btn-brand:active,.btn-primary:active{
  transform:translateY(0);
  box-shadow:var(--shadow-1);
  background:var(--brand-700);
  border-color:var(--brand-700);
}
.btn-outline-brand,.btn-outline-primary{
  background:transparent;
  border:1px solid var(--line);
  color:var(--brand-700);
  height:48px;
  padding:0 24px;
  font-size:16px;
}
.btn-outline-brand:hover,.btn-outline-primary:hover{
  background:var(--brand-100);
  border-color:var(--brand-500);
  color:var(--brand-700);
  transform:translateY(-1px);
  box-shadow:var(--shadow-1);
}
.btn-accent{
  background:var(--accent-500);
  border-color:var(--accent-500);
  color:#fff;
  height:48px;
  padding:0 22px;
}
.btn-accent:hover{background:#E85A2E;border-color:#E85A2E;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-sm{padding:0 18px;height:42px;font-size:14px;border-radius:var(--r-sm);}
.btn[disabled],.btn.disabled{opacity:.48;pointer-events:none;cursor:not-allowed;}
.text-link{
  color:var(--brand-700);
  font-weight:600;
  font-size:15px;
  display:inline-flex;
  align-items:center;
  gap:6px;
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:1px;
}
.text-link i{transition:transform .2s ease;font-size:12px;}
.text-link:hover{color:var(--brand-500);}
.text-link:hover i{transform:translateX(3px);}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  padding:56px 0 68px;
  background:
    radial-gradient(680px 320px at 88% -10%, rgba(18,179,166,.10), rgba(18,179,166,0) 70%),
    linear-gradient(180deg,#F6FBF9 0%, var(--bg) 100%);
  border-bottom:1px solid var(--line-soft);
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(to right, rgba(12,27,28,.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(12,27,28,.035) 1px, transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg, rgba(0,0,0,.5), transparent 78%);
  pointer-events:none;
}
.page-hero > .container{position:relative;z-index:2;}
.breadcrumb-nav{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:14px;
  color:var(--text-400);
  margin-bottom:22px;
}
.breadcrumb-nav a{color:var(--text-600);font-weight:500;}
.breadcrumb-nav a:hover{color:var(--brand-700);}
.breadcrumb-nav .sep{color:var(--text-400);font-size:12px;}
.breadcrumb-nav .current{color:var(--text-400);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:500;
  color:var(--brand-700);
  background:var(--brand-100);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:18px;
}
.eyebrow i{font-size:11px;}
.page-hero h1{
  font-size:44px;
  line-height:1.3;
  max-width:820px;
  margin-bottom:18px;
}
.page-hero .lead{
  font-size:18px;
  color:var(--text-600);
  max-width:720px;
  margin-bottom:26px;
}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:10px 14px;
}
.fact-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:999px;
  padding:8px 16px;
  font-size:14px;
  color:var(--text-600);
  box-shadow:var(--shadow-1);
}
.fact-pill i{color:var(--brand-500);font-size:13px;}
.hero-visual{
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-3);
  border:1px solid var(--line);
  background:var(--surface-tint);
}
.hero-visual img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;}
@media (max-width:991.98px){
  .page-hero{padding:38px 0 48px;}
  .page-hero h1{font-size:30px;}
  .page-hero .lead{font-size:16px;}
  .hero-visual{margin-top:32px;}
  .hero-visual img{aspect-ratio:16/9;}
}

/* ---------- 区块通用 ---------- */
.section{padding:96px 0;}
.section.tight{padding:72px 0;}
.section.tint{background:var(--surface-tint);}
.section.dark{background:var(--ink-900);color:#D6E4E2;}
.section.dark h2,.section.dark h3{color:#fff;}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head .kicker{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.12em;
  color:var(--brand-500);
  margin-bottom:12px;
}
.section-head h2{font-size:32px;margin-bottom:14px;}
.section-head p{font-size:17px;color:var(--text-600);margin:0;}
.section.dark .section-head p{color:#9DB6B3;}
@media (max-width:991.98px){
  .section{padding:72px 0;}
  .section-head{margin-bottom:34px;}
  .section-head h2{font-size:24px;}
}
@media (max-width:575.98px){
  .section{padding:56px 0;}
  .section-head p{font-size:16px;}
}

/* ---------- 通栏分栏卡片 ---------- */
.split-list{display:flex;flex-direction:column;gap:28px;}
.split-card{
  display:flex;
  align-items:stretch;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:box-shadow .24s ease, transform .24s ease, border-color .24s ease;
}
.split-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:rgba(18,179,166,.35);}
.split-card:nth-child(even){flex-direction:row-reverse;}
.split-media{
  flex:0 0 42%;
  background:var(--surface-tint);
  overflow:hidden;
  position:relative;
}
.split-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  aspect-ratio:16/11;
  transition:transform .24s ease;
}
.split-card:hover .split-media img{transform:scale(1.03);}
.split-body{
  flex:1;
  padding:38px 40px;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.split-body .num{
  font-family:var(--font-mono);
  font-size:14px;
  font-weight:600;
  color:var(--brand-500);
  letter-spacing:.16em;
  margin-bottom:12px;
  display:block;
}
.split-body h3{font-size:22px;margin-bottom:12px;}
.split-body p{color:var(--text-600);font-size:17px;}
.split-body p:last-child{margin-bottom:0;}
.tag-line{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.badge-soft{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  font-weight:500;
  color:var(--brand-700);
  background:var(--brand-100);
  border-radius:var(--r-xs);
  padding:5px 11px;
  line-height:1.4;
}
@media (max-width:991.98px){
  .split-card,
  .split-card:nth-child(even){flex-direction:column;}
  .split-media{flex:none;}
  .split-media img{aspect-ratio:16/9;}
  .split-body{padding:28px 24px;}
  .split-body h3{font-size:20px;}
  .split-body p{font-size:16px;}
}

/* ---------- 要点速览 ---------- */
.overview-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.ov-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:28px 26px;
  box-shadow:var(--shadow-1);
  transition:box-shadow .24s ease, transform .24s ease, border-color .24s ease;
}
.ov-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:rgba(18,179,166,.35);}
.ov-head{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.ov-icon{
  width:42px;height:42px;
  border-radius:var(--r-sm);
  background:var(--brand-100);
  color:var(--brand-700);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:17px;
  flex-shrink:0;
}
.ov-card h3{font-size:18px;margin:0;}
.ov-card p{font-size:15px;color:var(--text-600);margin-bottom:0;}
.ov-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line-soft);
  font-size:13px;
  color:var(--text-400);
}
.ov-meta b{font-family:var(--font-mono);font-size:20px;font-weight:700;color:var(--brand-500);}
.meter{
  height:6px;
  border-radius:999px;
  background:var(--line-soft);
  overflow:hidden;
  margin-top:10px;
}
.meter span{display:block;height:100%;border-radius:999px;background:var(--brand-500);}
@media (max-width:767.98px){
  .overview-grid{grid-template-columns:1fr;}
}

/* ---------- 场景对照 ---------- */
.scene-wrap{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.scene-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:30px 26px;
  box-shadow:var(--shadow-1);
  display:flex;
  flex-direction:column;
  transition:box-shadow .24s ease, transform .24s ease, border-color .24s ease;
}
.scene-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:rgba(18,179,166,.35);}
.scene-card .scene-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:18px;
}
.scene-card .scene-top i{font-size:22px;color:var(--brand-500);}
.scene-card .scene-tag{
  font-size:12px;
  font-weight:600;
  color:var(--text-600);
  background:var(--surface-tint);
  border-radius:var(--r-xs);
  padding:4px 10px;
}
.scene-card h3{font-size:19px;margin-bottom:10px;}
.scene-card p{font-size:15px;color:var(--text-600);margin-bottom:16px;}
.check-list li{
  position:relative;
  padding-left:26px;
  font-size:15px;
  color:var(--text-600);
  line-height:1.8;
  margin-bottom:8px;
}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:"\2713";
  position:absolute;
  left:0;top:0;
  color:var(--brand-500);
  font-weight:700;
}
.dot-list li{
  position:relative;
  padding-left:20px;
  font-size:15px;
  color:var(--text-600);
  line-height:1.8;
  margin-bottom:8px;
}
.dot-list li::before{
  content:"";
  position:absolute;
  left:2px;top:12px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--brand-500);
}
@media (max-width:991.98px){
  .scene-wrap{grid-template-columns:1fr;}
}

/* ---------- 步骤条（轻量） ---------- */
.flow-line{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
  counter-reset:fl;
}
.flow-item{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px 22px;
  box-shadow:var(--shadow-1);
}
.flow-item::before{
  counter-increment:fl;
  content:counter(fl,decimal-leading-zero);
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:700;
  color:var(--brand-500);
  letter-spacing:.1em;
  display:block;
  margin-bottom:12px;
}
.flow-item h4{font-size:17px;margin-bottom:8px;}
.flow-item p{font-size:14px;color:var(--text-600);margin:0;}
@media (max-width:991.98px){
  .flow-line{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:575.98px){
  .flow-line{grid-template-columns:1fr;}
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.accordion-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:12px !important;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--shadow-1);
}
.accordion-item:last-child{margin-bottom:0;}
.accordion-button{
  font-size:17px;
  font-weight:500;
  color:var(--text-900);
  background:var(--surface);
  padding:22px 56px 22px 24px;
  border:0;
  position:relative;
  box-shadow:none !important;
}
.accordion-button::after{display:none;}
.accordion-button::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--brand-500);
  transform:scaleY(0);
  transform-origin:center;
  transition:transform .22s ease;
}
.accordion-button:not(.collapsed){
  color:var(--brand-700);
  font-weight:600;
  background:var(--surface-tint);
}
.accordion-button:not(.collapsed)::before{transform:scaleY(1);}
.accordion-button .plus{
  position:absolute;
  right:22px;top:50%;
  transform:translateY(-50%);
  width:26px;height:26px;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--brand-700);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
  transition:transform .24s ease, background .24s ease, color .24s ease, border-color .24s ease;
}
.accordion-button:not(.collapsed) .plus{
  background:var(--brand-500);
  border-color:var(--brand-500);
  color:#fff;
  transform:translateY(-50%) rotate(180deg);
}
.accordion-button:hover{color:var(--brand-700);}
.accordion-body{
  padding:4px 24px 24px;
  font-size:16px;
  color:var(--text-600);
  line-height:1.85;
  background:var(--surface);
}
.accordion-button:not(.collapsed) + .accordion-body{background:var(--surface-tint);}
.accordion-body p:last-child{margin-bottom:0;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink-900);
  color:#D6E4E2;
  padding:80px 0 88px;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-120px;top:-120px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(18,179,166,.28), rgba(18,179,166,0) 70%);
}
.cta-band .inner{position:relative;z-index:2;max-width:720px;margin:0 auto;text-align:center;}
.cta-band h2{color:#fff;font-size:32px;margin-bottom:14px;}
.cta-band p{color:#9DB6B3;font-size:17px;margin-bottom:28px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}
.cta-band .btn-outline-brand{border-color:rgba(255,255,255,.28);color:#E7F4F1;}
.cta-band .btn-outline-brand:hover{background:rgba(255,255,255,.08);border-color:var(--brand-500);color:#fff;}
.cta-note{font-size:13px;color:#7C9592;margin-top:18px;margin-bottom:0;}
@media (max-width:767.98px){
  .cta-band{padding:56px 0 64px;}
  .cta-band h2{font-size:24px;}
  .cta-band p{font-size:16px;}
  .cta-actions .btn{width:100%;}
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);
  color:#9DB6B3;
  padding-top:64px;
  padding-bottom:32px;
  border-top:3px solid var(--brand-500);
  font-size:15px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-col h4{
  color:#fff;
  font-size:16px;
  font-weight:600;
  margin-bottom:18px;
}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a{
  color:#9DB6B3;
  font-size:15px;
  display:inline-block;
  transition:color .2s ease, transform .2s ease;
}
.footer-col ul li a:hover{color:var(--brand-500);transform:translateX(4px);}
.footer-brand{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:16px;
}
.footer-brand .brand-mark{
  width:36px;height:36px;
  border-radius:var(--r-sm);
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));
  color:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
}
.footer-brand b{color:#fff;font-size:18px;font-weight:700;}
.site-footer p{font-size:14px;line-height:1.85;color:#8FA8A5;}
.footer-contact{
  display:flex;
  align-items:center;
  gap:9px;
  font-size:14px;
  color:#8FA8A5;
  margin-top:8px;
}
.footer-contact i{color:var(--brand-500);font-size:13px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding-top:22px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 20px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:#7C9592;
}
.footer-bottom a{color:#9DB6B3;}
.footer-bottom a:hover{color:var(--brand-500);}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .site-footer{padding-top:48px;}
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:1040;
}
.float-toggle{
  display:inline-flex;
  align-items:center;
  gap:9px;
  height:50px;
  padding:0 22px;
  border-radius:999px;
  border:0;
  background:var(--accent-500);
  color:#fff;
  font-size:15px;
  font-weight:600;
  box-shadow:var(--shadow-2);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .24s ease, transform .24s ease, visibility .24s, background .2s ease;
}
.float-cta.show .float-toggle{opacity:1;visibility:visible;transform:translateY(0);}
.float-toggle:hover{background:#E85A2E;}
.float-panel{
  position:absolute;
  right:0;
  bottom:62px;
  width:268px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-3);
  padding:14px;
  display:none;
}
.float-panel.open{display:block;}
.float-panel h4{font-size:14px;color:var(--text-400);font-weight:500;margin-bottom:10px;}
.float-panel a.p-item{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  border-radius:var(--r-sm);
  color:var(--text-900);
  font-size:15px;
  font-weight:500;
}
.float-panel a.p-item:hover{background:var(--surface-tint);color:var(--brand-700);}
.float-panel a.p-item i{color:var(--brand-500);font-size:13px;width:16px;text-align:center;}
.float-panel .p-btn{margin-top:10px;}
.float-panel .p-btn .btn{width:100%;height:44px;}
@media (max-width:767.98px){
  .float-cta{right:0;left:0;bottom:0;}
  .float-toggle{
    width:100%;
    border-radius:0;
    height:60px;
    justify-content:center;
    padding:0 16px 0 16px;
    padding-bottom:env(safe-area-inset-bottom);
  }
  .float-panel{
    right:16px;left:16px;
    width:auto;
    bottom:70px;
  }
}

/* 小工具 */
.divider-soft{height:1px;background:var(--line-soft);border:0;margin:0;}
.visually-hidden{
  position:absolute!important;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;border:0;
}
@media (max-width:575.98px){
  .container{padding-left:20px;padding-right:20px;}
  body{font-size:16px;}
}

/* roulang page: category4 */
:root{
  --brand-500:#12B3A6;
  --brand-700:#0B7C6C;
  --brand-100:#D9F2EE;
  --accent-500:#FF6B3D;
  --gold-400:#FFC94D;
  --bg:#FBF9F6;
  --surface:#FFFFFF;
  --surface-tint:#EFF7F5;
  --ink-900:#0C1B1C;
  --text-900:#121A19;
  --text-600:#4B5B58;
  --text-400:#8C9B98;
  --line:#E4EBE9;
  --line-soft:#EFF3F2;
  --ok:#1F9D6B;
  --warn:#E0940B;
  --err:#D9483B;
  --r-xs:6px;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --shadow-1:0 1px 2px rgba(12,27,28,.06);
  --shadow-2:0 6px 20px -6px rgba(12,27,28,.12);
  --shadow-3:0 18px 48px -18px rgba(12,27,28,.22);
  --font: -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--text-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;background:var(--surface-tint);border-radius:var(--r-md);}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-500);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
h1,h2,h3,h4{margin:0;line-height:1.3;color:var(--text-900);font-weight:700;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;}

.container{width:100%;margin:0 auto;padding-left:24px;padding-right:24px;}
@media (min-width:576px){.container{max-width:540px;}}
@media (min-width:768px){.container{max-width:720px;}}
@media (min-width:992px){.container{max-width:960px;}}
@media (min-width:1200px){.container{max-width:1200px;}}
@media (min-width:1400px){.container{max-width:1280px;}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink-900);color:#BFD3D0;font-size:13px;line-height:1.2;}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;padding-top:8px;padding-bottom:8px;}
.topbar-left{display:flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-left i{color:var(--brand-500);}
.topbar-right a{color:#D9F2EE;display:inline-flex;align-items:center;gap:6px;font-weight:500;}
.topbar-right a:hover{color:#fff;}
.topbar-right i{font-size:11px;transition:transform .2s ease;}
.topbar-right a:hover i{transform:translateX(3px);}
@media (max-width:575px){
  .topbar .container{padding-left:16px;padding-right:16px;}
  .topbar-hide{display:none;}
}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:var(--shadow-2);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:70px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--text-900);letter-spacing:.2px;}
.brand:hover{color:var(--brand-700);}
.brand-mark{
  width:36px;height:36px;border-radius:8px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));
  color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:16px;
  box-shadow:var(--shadow-1);
}
.main-nav{align-items:center;gap:28px;flex:1 1 auto;justify-content:center;}
.main-nav a{position:relative;font-size:15px;font-weight:500;color:var(--text-600);padding:6px 0;white-space:nowrap;}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:var(--brand-500);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.main-nav a:hover{color:var(--brand-700);}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1);}
.main-nav a.active{color:var(--brand-700);font-weight:600;}
.header-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.hamburger{
  width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:#fff;color:var(--text-900);display:inline-flex;align-items:center;justify-content:center;font-size:18px;
  transition:all .2s ease;
}
.hamburger:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-100);}

/* ---------- 按钮 ---------- */
.btn-brand,.btn-ghost,.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1.5;
  padding:12px 22px;min-height:48px;border-radius:var(--r-sm);
  transition:all .2s ease;cursor:pointer;border:1px solid transparent;
}
.btn-brand{background:var(--brand-500);border-color:var(--brand-500);color:#fff;}
.btn-brand:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-brand:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--brand-700);}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-accent{background:var(--accent-500);border-color:var(--accent-500);color:#fff;}
.btn-accent:hover{background:#E85A2E;border-color:#E85A2E;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-sm{padding:9px 16px;min-height:40px;font-size:14px;}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-700);}
.btn-text i{font-size:12px;transition:transform .2s ease;}
.btn-text:hover{color:var(--brand-500);}
.btn-text:hover i{transform:translateX(4px);}
.btn-brand:disabled,.btn-ghost:disabled{opacity:.48;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 面包屑 ---------- */
.crumb{padding:22px 0 0;font-size:14px;color:var(--text-400);}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:0;list-style:none;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"›";color:var(--text-400);}
.crumb a{color:var(--text-600);}
.crumb a:hover{color:var(--brand-700);}
.crumb .current{color:var(--text-400);}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;margin-top:20px;border-radius:var(--r-lg);overflow:hidden;
  background-color:var(--ink-900);
  background-image:linear-gradient(100deg,rgba(12,27,28,.94) 0%,rgba(12,27,28,.82) 42%,rgba(12,27,28,.42) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center right;
  color:#fff;
  box-shadow:var(--shadow-3);
}
.page-hero-inner{
  position:relative;z-index:2;padding:64px 56px 60px;max-width:760px;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:500;
  background:rgba(217,242,238,.14);border:1px solid rgba(217,242,238,.28);color:#D9F2EE;margin-bottom:18px;
}
.page-hero h1{
  color:#fff;font-size:44px;font-weight:800;line-height:1.25;letter-spacing:.5px;margin-bottom:16px;
}
.page-hero p{color:#C9DCD9;font-size:17px;line-height:1.85;max-width:620px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-actions .btn-ghost{border-color:rgba(255,255,255,.34);color:#fff;}
.hero-actions .btn-ghost:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.6);color:#fff;}
.hero-note{margin-top:16px;font-size:13px;color:#9FB8B5;}
@media (max-width:991px){
  .page-hero-inner{padding:48px 32px 44px;}
  .page-hero h1{font-size:34px;}
}
@media (max-width:575px){
  .page-hero{border-radius:var(--r-md);}
  .page-hero-inner{padding:36px 22px 34px;}
  .page-hero h1{font-size:29px;}
  .page-hero p{font-size:16px;}
  .hero-actions .btn-brand,.hero-actions .btn-ghost{width:100%;}
}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0;}
.section-tint{background:var(--surface-tint);}
.section-sm{padding:72px 0;}
.section-head{max-width:800px;margin-bottom:48px;}
.section-head h2{font-size:32px;font-weight:700;margin-bottom:14px;}
.section-head p{color:var(--text-600);font-size:16px;margin:0;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:1.4px;color:var(--brand-700);
  background:var(--brand-100);border-radius:999px;padding:5px 12px;margin-bottom:14px;
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .section-sm{padding:56px 0;}
  .section-head{margin-bottom:34px;}
  .section-head h2{font-size:25px;}
}
@media (max-width:575px){
  .section{padding:56px 0;}
  .section-head h2{font-size:23px;}
}

/* ---------- 双栏对比卡 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:32px;box-shadow:var(--shadow-1);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.compare-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(18,179,166,.45);}
.compare-card .tag{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:500;
  padding:5px 12px;border-radius:var(--r-xs);background:var(--brand-100);color:var(--brand-700);margin-bottom:16px;
}
.compare-card h3{font-size:22px;font-weight:600;margin-bottom:12px;}
.compare-card p{color:var(--text-600);font-size:16px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:16px;color:var(--text-600);line-height:1.8;padding:7px 0;
}
.check-list li i{color:var(--brand-500);margin-top:7px;font-size:13px;flex:0 0 auto;}
.check-list li b{color:var(--text-900);font-weight:600;}

/* 问答对照（第 4 类版式核心） */
.qa-block{
  display:grid;grid-template-columns:1fr 1fr;gap:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--shadow-1);margin-bottom:24px;
  transition:box-shadow .24s ease,border-color .24s ease;
}
.qa-block:hover{box-shadow:var(--shadow-2);border-color:rgba(18,179,166,.4);}
.qa-side{padding:32px;}
.qa-side.question{background:var(--surface-tint);border-right:1px solid var(--line);}
.qa-label{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--text-400);letter-spacing:.6px;margin-bottom:14px;}
.qa-label i{font-size:14px;}
.qa-side.answer .qa-label{color:var(--brand-700);}
.qa-side h3{font-size:20px;font-weight:600;margin-bottom:14px;line-height:1.5;}
.qa-side p{color:var(--text-600);font-size:16px;}
.step-list{counter-reset:step;}
.step-list li{
  position:relative;padding-left:38px;padding-top:6px;padding-bottom:6px;
  font-size:16px;color:var(--text-600);line-height:1.8;
}
.step-list li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:8px;width:24px;height:24px;border-radius:var(--r-xs);
  background:var(--brand-100);color:var(--brand-700);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}

/* ---------- 速览要点 ---------- */
.overview{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;}
.overview-img{border-radius:var(--r-lg);box-shadow:var(--shadow-2);overflow:hidden;background:var(--surface-tint);}
.overview-img img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11;border-radius:0;}
.point-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.point-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--shadow-1);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.point-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(18,179,166,.45);}
.point-card .point-idx{
  font-size:13px;font-weight:700;color:var(--brand-500);letter-spacing:1px;margin-bottom:10px;display:block;
}
.point-card h4{font-size:18px;font-weight:600;margin-bottom:8px;}
.point-card p{font-size:14px;color:var(--text-600);line-height:1.8;margin:0;}

/* ---------- 三步自查 ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.flow-item{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:30px 26px 28px;box-shadow:var(--shadow-1);transition:transform .24s ease,box-shadow .24s ease;
}
.flow-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.flow-item .flow-num{
  font-size:56px;font-weight:800;line-height:1;color:var(--brand-500);opacity:.16;
  font-variant-numeric:tabular-nums;margin-bottom:-18px;display:block;
}
.flow-item h4{font-size:19px;font-weight:600;margin-bottom:10px;position:relative;}
.flow-item h4::before{
  content:"";display:block;width:28px;height:3px;border-radius:2px;background:var(--brand-500);margin-bottom:14px;
}
.flow-item p{font-size:15px;color:var(--text-600);margin:0;line-height:1.85;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.accordion-item{
  border:1px solid var(--line)!important;border-radius:12px!important;background:var(--surface);
  margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow-1);
}
.accordion-button{
  font-size:17px;font-weight:600;color:var(--text-900);background:var(--surface)!important;
  padding:20px 22px;box-shadow:none!important;line-height:1.6;
}
.accordion-button:not(.collapsed){color:var(--brand-700);background:var(--surface-tint)!important;}
.accordion-button:focus{box-shadow:none;}
.accordion-button::after{
  background-image:none!important;
  content:"+";width:26px;height:26px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:600;color:var(--brand-500);line-height:1;
  border-radius:var(--r-xs);background:var(--brand-100);margin-left:16px;
}
.accordion-button:not(.collapsed)::after{content:"−";}
.accordion-body{
  padding:2px 22px 22px;color:var(--text-600);font-size:16px;line-height:1.85;
  border-left:3px solid var(--brand-500);background:var(--surface);
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);color:#fff;
  background-color:var(--ink-900);
  background-image:linear-gradient(120deg,rgba(12,27,28,.94),rgba(11,124,108,.78)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  padding:76px 48px;text-align:center;box-shadow:var(--shadow-3);
}
.cta-band h2{color:#fff;font-size:32px;font-weight:700;margin-bottom:14px;}
.cta-band p{color:#C9DCD9;font-size:17px;max-width:640px;margin:0 auto 28px;}
.cta-band .btn-brand{background:var(--brand-500);border-color:var(--brand-500);}
.cta-band .btn-brand:hover{background:#fff;border-color:#fff;color:var(--brand-700);}
.cta-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;}
@media (max-width:575px){
  .cta-band{padding:48px 22px;border-radius:var(--r-md);}
  .cta-band h2{font-size:24px;}
  .cta-actions .btn-brand,.cta-actions .btn-ghost{width:100%;}
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);color:#A9C0BD;margin-top:96px;
  border-top:3px solid var(--brand-500);
  padding:64px 0 32px;font-size:15px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.4px;}
.footer-col p{color:#8FA8A5;font-size:14px;line-height:1.85;margin-bottom:16px;}
.footer-col ul li{margin-bottom:11px;}
.footer-col a{color:#A9C0BD;font-size:14px;display:inline-block;transition:color .2s ease,transform .2s ease;}
.footer-col a:hover{color:var(--brand-500);transform:translateX(4px);}
.footer-contact{display:flex;align-items:center;gap:8px;color:#8FA8A5;font-size:13.5px;margin-bottom:8px;}
.footer-contact i{color:var(--brand-500);font-size:13px;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7C9592;
}
.footer-bottom a{color:#A9C0BD;}
.footer-bottom a:hover{color:var(--brand-500);}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575px){
  .site-footer{margin-top:64px;padding:48px 0 26px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}

/* ---------- 移动抽屉 ---------- */
.offcanvas{background:var(--surface);}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.offcanvas-title{font-size:16px;font-weight:700;}
.drawer-topbar{
  background:var(--ink-900);color:#BFD3D0;font-size:13px;line-height:1.6;padding:12px 20px;
}
.drawer-topbar i{color:var(--brand-500);margin-right:6px;}
.drawer-nav{padding:10px 0 4px;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 20px;font-size:15px;font-weight:500;color:var(--text-900);
  border-bottom:1px solid var(--line-soft);
}
.drawer-nav a i{color:var(--text-400);font-size:13px;}
.drawer-nav a.active{color:var(--brand-700);background:var(--brand-100);font-weight:600;}
.drawer-nav a.active i{color:var(--brand-700);}
.drawer-cta{padding:20px;}
.drawer-cta .btn-brand{width:100%;}

/* ---------- 浮动 CTA ---------- */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:1040;}
.float-toggle{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--accent-500);color:#fff;border:none;border-radius:999px;
  padding:14px 22px;font-size:15px;font-weight:600;box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .24s ease,transform .24s ease,visibility .24s;
  cursor:pointer;
}
.float-cta.is-visible .float-toggle{opacity:1;visibility:visible;transform:translateY(0);}
.float-toggle:hover{background:#E85A2E;transform:translateY(-1px);}
.float-panel{
  position:absolute;right:0;bottom:64px;width:264px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-3);padding:16px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
}
.float-panel.open{opacity:1;visibility:visible;transform:translateY(0);}
.float-panel h5{font-size:14px;font-weight:700;margin-bottom:12px;color:var(--text-900);}
.float-panel a{
  display:flex;align-items:center;justify-content:space-between;
  font-size:14px;color:var(--text-600);padding:10px 0;border-bottom:1px solid var(--line-soft);
}
.float-panel a:hover{color:var(--brand-700);}
.float-panel a i{font-size:12px;color:var(--text-400);}
.float-panel .btn-brand{width:100%;margin-top:14px;min-height:44px;}
@media (max-width:575px){
  .float-cta{right:0;left:0;bottom:0;}
  .float-toggle{
    width:100%;border-radius:0;justify-content:center;padding:16px;
    padding-bottom:calc(16px + env(safe-area-inset-bottom));
  }
  .float-panel{right:16px;left:16px;width:auto;bottom:76px;}
}

/* ---------- 响应式（对比版式） ---------- */
@media (max-width:991px){
  .compare-grid{grid-template-columns:1fr;}
  .qa-block{grid-template-columns:1fr;}
  .qa-side.question{border-right:none;border-bottom:1px solid var(--line);}
  .overview{grid-template-columns:1fr;gap:32px;}
  .flow-grid{grid-template-columns:1fr;}
  .overview-img img{aspect-ratio:16/10;}
}
@media (max-width:575px){
  .point-grid{grid-template-columns:1fr;}
  .compare-card,.qa-side{padding:24px 20px;}
  .compare-card h3{font-size:20px;}
  .qa-side h3{font-size:18px;}
  .flow-item{padding:24px 20px;}
  .float-cta{z-index:1035;}
}