/* roulang page: index */
:root{
  --brand:#1F4E5F;
  --brand-dark:#143642;
  --brand-light:#E6EEF1;
  --terra:#C4553B;
  --terra-light:#F7E9E5;
  --olive:#6E7F5C;
  --bg:#FAF8F5;
  --card:#FFFFFF;
  --alt:#F4F1EC;
  --alt2:#F2F6F7;
  --text:#16232B;
  --text-2:#55666E;
  --text-3:#8A979D;
  --border:#E4E0DA;
  --border-cool:#DCE5E8;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --sh-1:0 2px 10px rgba(22,35,43,.06);
  --sh-2:0 10px 28px rgba(31,78,95,.12);
  --sh-3:0 18px 40px rgba(31,78,95,.16);
  --t:220ms cubic-bezier(.2,.7,.3,1);
  --mono:"Inter","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--terra)}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);letter-spacing:.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container,.container-lg,.container-xl,.container-fluid{max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto}
@media (min-width:1400px){.container,.container-lg,.container-xl{max-width:1240px}}
section{position:relative}
.sec{padding:100px 0}
.sec-sm{padding:72px 0}
.sec-alt{background:var(--alt)}
.sec-cool{background:var(--alt2)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:500;letter-spacing:.06em;
  color:var(--brand);background:var(--brand-light);
  padding:7px 14px;border-radius:999px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--terra)}
.sec-head{margin-bottom:48px}
.sec-head h2{font-size:34px;line-height:1.32;margin-top:16px}
.sec-head .lead{color:var(--text-2);font-size:16.5px;margin-top:14px;max-width:720px}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.sec-head-row h2{font-size:34px;line-height:1.3;margin-top:16px}
/* 顶部三色细线 */
.top-stripe{height:4px;background:linear-gradient(90deg,#4E7A4A 0 33.33%,#FFFFFF 33.33% 66.66%,#B33A2B 66.66% 100%)}
/* 导航 */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  transition:box-shadow var(--t),border-color var(--t);
  border-bottom:1px solid transparent;
}
.site-header.scrolled{border-bottom:1px solid var(--border);box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:74px}
.brand{display:flex;align-items:center;gap:12px;color:var(--text)}
.brand:hover{color:var(--brand)}
.brand-mark{
  width:40px;height:40px;border-radius:12px;background:var(--brand);flex:0 0 auto;position:relative;overflow:hidden;
}
.brand-mark::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,transparent 42%,#4E7A4A 42% 52%,#FFFFFF 52% 60%,#B33A2B 60% 70%,transparent 70%);
  opacity:.92;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:18px;font-weight:700;color:var(--brand)}
.brand-sub{font-size:11.5px;color:var(--text-3);letter-spacing:.05em}
.nav-desktop{display:flex;align-items:center;gap:30px}
.nav-item{position:relative;font-size:15.5px;font-weight:500;color:var(--text);padding:6px 0}
.nav-item::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform var(--t);border-radius:2px;
}
.nav-item:hover{color:var(--brand)}
.nav-item:hover::after{transform:scaleX(1)}
.nav-item.is-active{color:var(--brand)}
.nav-item.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:16px}
.mega-wrap{position:relative}
.mega-toggle{
  display:inline-flex;align-items:center;gap:7px;
  background:transparent;border:1px solid var(--border-cool);border-radius:999px;
  padding:8px 16px;font-size:14.5px;font-weight:500;color:var(--text-2);
  transition:var(--t);cursor:pointer;
}
.mega-toggle:hover,.mega-wrap:focus-within .mega-toggle{color:var(--brand);border-color:var(--brand);background:var(--brand-light)}
.mega-toggle .chev{transition:transform var(--t)}
.mega-wrap:hover .mega-toggle .chev,.mega-wrap:focus-within .mega-toggle .chev{transform:rotate(180deg)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 16px);width:740px;
  background:#fff;border-radius:14px;box-shadow:var(--sh-3);border:1px solid var(--border-cool);
  padding:26px;display:grid;grid-template-columns:1fr 1fr 1.05fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--t),transform var(--t),visibility var(--t);
}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col-title{font-size:12.5px;font-weight:500;letter-spacing:.06em;color:var(--text-3);margin-bottom:14px}
.mega-link{display:block;padding:9px 12px;border-radius:10px;font-size:14.5px;color:var(--text-2);transition:var(--t)}
.mega-link:hover{background:var(--alt2);color:var(--brand)}
.mega-card{display:block;border:1px solid var(--border);border-radius:12px;padding:14px;margin-bottom:12px;transition:var(--t)}
.mega-card:hover{border-color:var(--brand);box-shadow:var(--sh-2);transform:translateY(-2px)}
.mega-card strong{display:block;font-size:14.5px;color:var(--text);font-weight:600;line-height:1.5}
.mega-card span{font-size:12.5px;color:var(--text-3)}
.mega-action{background:var(--brand-light);border-radius:12px;padding:20px}
.mega-action h4{font-size:16px;margin-bottom:8px;color:var(--brand)}
.mega-action p{font-size:13.5px;color:var(--text-2);margin-bottom:16px}
.btn-main,.btn-ghost,.btn-light,.btn-text{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform var(--t),background var(--t),color var(--t),box-shadow var(--t),border-color var(--t);
}
.btn-main{background:var(--brand);color:#fff}
.btn-main:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-main:active{transform:translateY(0);box-shadow:none}
.btn-main:disabled{background:var(--text-3);cursor:not-allowed;transform:none;box-shadow:none}
.btn-ghost{background:transparent;border:1.5px solid var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-light{background:#fff;color:var(--brand-dark)}
.btn-light:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-text{background:transparent;border:none;padding:0 4px;color:var(--brand)}
.btn-text:hover{color:var(--terra)}
.btn-text .arw{transition:transform var(--t)}
.btn-text:hover .arw{transform:translateX(4px)}
.btn-sm{height:42px;padding:0 18px;font-size:14.5px}
.nav-burger{
  width:44px;height:44px;border-radius:11px;border:1px solid var(--border-cool);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;color:var(--brand);cursor:pointer;transition:var(--t);
}
.nav-burger:hover{border-color:var(--brand);background:var(--brand-light)}
/* Hero */
.hero{padding:76px 0 96px;overflow:hidden}
.hero::before{
  content:"";position:absolute;right:-180px;top:-140px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(31,78,95,.10),rgba(31,78,95,0) 68%);
}
.hero-title{font-size:48px;line-height:1.25;margin:22px 0 18px;letter-spacing:0}
.hero-sub{font-size:17px;color:var(--text-2);max-width:560px}
.hero-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin:32px 0 34px}
.trust-row{display:flex;flex-wrap:wrap;gap:14px 30px;border-top:1px solid var(--border);padding-top:22px}
.trust-item{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--text-2)}
.trust-item i{color:var(--brand);font-size:15px}
.hero-visual{position:relative;padding-bottom:52px}
.hero-visual .hero-img-wrap{
  border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/12;box-shadow:var(--sh-2);
  position:relative;background:var(--brand-light);
}
.hero-visual .hero-img-wrap img{width:100%;height:100%;object-fit:cover}
.hero-visual .hero-img-wrap::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,54,66,0) 45%,rgba(20,54,66,.42));
}
.hero-float-card{
  position:absolute;left:-14px;bottom:0;width:290px;background:#fff;border-radius:14px;
  padding:16px;box-shadow:var(--sh-3);display:flex;gap:14px;align-items:center;border:1px solid var(--border-cool);
}
.hero-float-card .thumb{width:62px;height:62px;border-radius:11px;overflow:hidden;flex:0 0 auto}
.hero-float-card .thumb img{width:100%;height:100%;object-fit:cover}
.hero-float-card strong{display:block;font-size:14.5px;line-height:1.5}
.hero-float-card span{font-size:12.5px;color:var(--text-3)}
/* 指标看板 */
.metric-lg{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);
  padding:32px;height:100%;display:flex;flex-direction:column;justify-content:space-between;
}
.metric-lg .metric-num{font-family:var(--mono);font-size:64px;font-weight:700;color:var(--brand);line-height:1}
.metric-lg .metric-num small{font-size:18px;font-weight:600;margin-left:6px;color:var(--text-2)}
.metric-lg h3{font-size:20px;margin-bottom:10px}
.metric-lg p{color:var(--text-2);font-size:15px}
.metric-bar{height:8px;border-radius:999px;background:var(--brand-light);margin-top:26px;overflow:hidden;display:flex}
.metric-bar i{display:block;height:100%}
.metric-bar i.b1{width:46%;background:var(--brand)}
.metric-bar i.b2{width:34%;background:var(--olive)}
.metric-bar i.b3{width:20%;background:var(--terra)}
.metric-bar-legend{display:flex;gap:18px;flex-wrap:wrap;margin-top:12px;font-size:12.5px;color:var(--text-3)}
.metric-bar-legend span::before{content:"";display:inline-block;width:8px;height:8px;border-radius:2px;margin-right:6px;vertical-align:middle}
.metric-bar-legend .l1::before{background:var(--brand)}
.metric-bar-legend .l2::before{background:var(--olive)}
.metric-bar-legend .l3::before{background:var(--terra)}
.metric-stack{display:flex;flex-direction:column;gap:16px;height:100%}
.metric-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);
  padding:22px 24px;display:flex;align-items:center;gap:20px;flex:1;transition:var(--t);
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(31,78,95,.28)}
.metric-card .num{font-family:var(--mono);font-size:40px;font-weight:700;color:var(--brand);line-height:1;min-width:74px}
.metric-card .num small{font-size:14px;font-weight:500;color:var(--text-3);margin-left:4px}
.metric-card h4{font-size:16.5px;margin-bottom:4px}
.metric-card p{font-size:13.5px;color:var(--text-2);line-height:1.65}
/* 服务矩阵 */
.service-lg{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);
  overflow:hidden;height:100%;display:flex;flex-direction:column;transition:var(--t);
}
.service-lg:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(31,78,95,.28)}
.service-lg .cover{aspect-ratio:16/10;overflow:hidden;background:var(--brand-light)}
.service-lg .cover img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.service-lg:hover .cover img{transform:scale(1.04)}
.service-lg .body{padding:30px;display:flex;flex-direction:column;gap:14px;flex:1}
.service-lg h3{font-size:23px}
.service-lg p{color:var(--text-2);font-size:15.5px}
.service-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);
  padding:26px;height:100%;transition:var(--t);display:flex;flex-direction:column;gap:12px;
}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(31,78,95,.28)}
.service-card .idx{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--terra);letter-spacing:.08em}
.service-card h4{font-size:18px}
.service-card p{font-size:14.5px;color:var(--text-2)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand)}
.link-arrow .arw{transition:transform var(--t)}
.link-arrow:hover{color:var(--terra)}
.link-arrow:hover .arw{transform:translateX(4px)}
/* 对比 */
.compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.compare-col{border-radius:var(--r-card);padding:34px;border:1px solid var(--border)}
.compare-col.before{background:#fff}
.compare-col.after{background:var(--brand-light);border-color:rgba(31,78,95,.2)}
.compare-col h3{font-size:21px;margin-bottom:6px}
.compare-col .compare-note{font-size:14px;color:var(--text-2);margin-bottom:22px}
.badge-olive{
  display:inline-flex;align-items:center;gap:6px;background:#EDF1E8;color:#4C5C3E;
  border-radius:999px;padding:5px 13px;font-size:12.5px;font-weight:600;margin-bottom:14px;
}
.compare-row{display:flex;justify-content:space-between;gap:18px;padding:15px 0;border-top:1px solid var(--border-cool);font-size:15px}
.compare-row:first-of-type{border-top:none}
.compare-row .dim{color:var(--text-3);font-size:13.5px;flex:0 0 96px}
.compare-row .val{flex:1;color:var(--text)}
.compare-col.after .compare-row .val{font-weight:600;color:var(--brand-dark)}
/* 资讯 */
.news-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);
  overflow:hidden;display:flex;height:100%;transition:var(--t);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(31,78,95,.28)}
.news-thumb{flex:0 0 40%;overflow:hidden;background:var(--brand-light);display:block}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.badge-soft{
  display:inline-flex;align-items:center;background:var(--brand-light);color:var(--brand);
  border-radius:999px;padding:5px 12px;font-size:12.5px;font-weight:500;
}
.news-date{font-size:12.5px;color:var(--text-3);font-family:var(--mono)}
.news-title{font-size:17.5px;line-height:1.55}
.news-title a{color:var(--text)}
.news-title a:hover{color:var(--brand)}
.news-sum{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{
  background:#fff;border:1px dashed var(--border-cool);border-radius:var(--r-card);
  padding:64px 24px;text-align:center;
}
.empty-state i{font-size:30px;color:var(--brand);opacity:.55}
.empty-state p{color:var(--text-2);margin:14px 0 20px;font-size:15px}
/* FAQ */
.faq-side{position:sticky;top:110px}
.faq-side h2{font-size:32px;line-height:1.3;margin-top:16px}
.faq-side p{color:var(--text-2);font-size:15.5px;margin-top:14px}
.faq-acc .accordion-item{border:none;background:transparent;margin-bottom:14px}
.faq-acc .accordion-button{
  background:#fff;border:1px solid var(--border);border-radius:12px !important;
  padding:20px 24px;font-size:16.5px;font-weight:600;color:var(--text);box-shadow:none;
  position:relative;transition:var(--t);
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);box-shadow:var(--sh-1);background:#fff}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:var(--brand)}
.faq-acc .accordion-button::after{
  content:"";background-image:none;width:11px;height:11px;margin-top:-4px;
  border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:rotate(45deg);transition:transform var(--t);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);margin-top:4px}
.faq-acc .accordion-body{padding:18px 24px 22px;color:var(--text-2);font-size:15.5px;background:#fff;border-radius:0 0 12px 12px;margin-top:-8px}
.faq-acc .accordion-collapse{border-radius:12px}
/* 表单 */
.form-panel{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:34px;
}
.form-label{font-size:14.5px;font-weight:600;margin-bottom:8px;color:var(--text)}
.form-label .req{color:var(--terra);margin-left:3px}
.form-control,.form-select{
  height:48px;border-radius:var(--r-btn);border:1px solid var(--border);background:#fff;
  padding:0 16px;font-size:15px;transition:var(--t);
}
textarea.form-control{height:auto;padding:14px 16px;line-height:1.7}
.form-control::placeholder{color:var(--text-3)}
.form-control:focus,.form-select:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,78,95,.12)}
.form-control.is-invalid{border-color:var(--terra)}
.form-check-input{width:18px;height:18px;margin-top:5px;border-color:var(--border)}
.form-check-input:checked{background-color:var(--brand);border-color:var(--brand)}
.form-check-label{font-size:14px;color:var(--text-2)}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:14px}
.form-success{
  display:none;background:#EDF1E8;border-radius:12px;padding:14px 18px;color:#4C5C3E;
  font-size:14.5px;margin-top:18px;
}
.form-success.show{display:block}
.guarantee{display:flex;gap:14px;align-items:flex-start;margin-bottom:18px}
.guarantee i{color:var(--terra);font-size:17px;margin-top:5px}
.guarantee strong{display:block;font-size:15.5px;margin-bottom:2px}
.guarantee span{font-size:14px;color:var(--text-2)}
/* CTA 条 */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-img);
  background:var(--brand-dark) url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  padding:64px 56px;color:#fff;
}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(20,54,66,.94) 0%,rgba(20,54,66,.78) 58%,rgba(20,54,66,.5) 100%)}
.cta-band .inner{position:relative;z-index:2;max-width:640px}
.cta-band h2{color:#fff;font-size:32px;line-height:1.32}
.cta-band p{color:rgba(255,255,255,.82);margin:16px 0 28px;font-size:16px}
/* 页脚 */
.site-footer{background:var(--brand-dark);color:rgba(255,255,255,.78);padding:72px 0 28px;margin-top:0}
.site-footer h4{color:#fff;font-size:15.5px;margin-bottom:18px;letter-spacing:.02em}
.site-footer a{color:rgba(255,255,255,.78);font-size:14.5px;display:block;padding:6px 0;transition:var(--t)}
.site-footer a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand .brand-mark{background:rgba(255,255,255,.14)}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-sub{color:rgba(255,255,255,.6)}
.footer-desc{font-size:14.5px;line-height:1.9;max-width:340px}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;padding:7px 0}
.footer-contact i{color:#7FB0C0;margin-top:6px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);margin-top:48px;padding-top:22px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55);
}
/* 移动端抽屉 */
.offcanvas{background:#fff}
.offcanvas-header{border-bottom:1px solid var(--border);padding:18px 20px}
.offcanvas-body{padding:16px 20px 28px}
.m-nav-link{
  display:flex;align-items:center;justify-content:space-between;min-height:48px;
  padding:0 14px;border-radius:10px;font-size:16px;font-weight:500;color:var(--text);
}
.m-nav-link.is-active{background:var(--brand-light);color:var(--brand)}
.m-nav-link:hover{background:var(--alt2);color:var(--brand)}
.m-group-title{font-size:12.5px;color:var(--text-3);letter-spacing:.06em;margin:22px 0 8px;padding-left:14px}
/* 返回顶部 */
.to-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;
  background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transition:var(--t);z-index:1020;border:none;cursor:pointer;
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:var(--brand-dark);color:#fff;transform:translateY(-3px)}
/* 响应式 */
@media (max-width:1199px){
  .hero-title{font-size:42px}
  .mega-panel{width:640px}
}
@media (max-width:991px){
  .sec{padding:76px 0}
  .hero{padding:56px 0 72px}
  .hero-title{font-size:36px}
  .sec-head h2,.sec-head-row h2,.faq-side h2{font-size:28px}
  .hero-visual{margin-top:12px}
  .mega-wrap{display:none}
  .cta-band{padding:48px 32px}
  .cta-band h2{font-size:26px}
  .faq-side{position:static;margin-bottom:32px}
}
@media (max-width:767px){
  .container,.container-lg,.container-xl{padding-left:18px;padding-right:18px}
  .sec{padding:60px 0}
  .sec-head{margin-bottom:34px}
  .hero-title{font-size:31px}
  .hero-sub{font-size:16px}
  .sec-head h2,.sec-head-row h2,.faq-side h2{font-size:25px}
  .btn-main,.btn-ghost{width:100%}
  .hero-actions{gap:14px}
  .hero-float-card{position:static;width:100%;margin-top:16px;box-shadow:var(--sh-1)}
  .hero-visual{padding-bottom:0}
  .compare-wrap{grid-template-columns:1fr}
  .news-card{flex-direction:column}
  .news-thumb{flex:0 0 auto;aspect-ratio:16/9}
  .metric-lg .metric-num{font-size:52px}
  .cta-band{padding:40px 24px;border-radius:14px}
  .form-panel{padding:24px}
  .service-lg .body{padding:24px}
  .metric-card{padding:20px}
  .metric-card .num{font-size:34px;min-width:62px}
}
@media (max-width:575px){
  body{font-size:16px}
  .hero-title{font-size:28px;line-height:1.32}
  .sec-head h2,.sec-head-row h2{font-size:23px}
  .metric-card{flex-direction:column;align-items:flex-start;gap:10px}
  .cta-band h2{font-size:22px}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: article */
:root{
  --c-primary:#1F4E5F;
  --c-primary-dark:#143642;
  --c-primary-soft:#E6EEF1;
  --c-accent:#C4553B;
  --c-accent-soft:#F7E9E5;
  --c-green:#6E7F5C;
  --bg:#FAF8F5;
  --bg-alt:#F4F1EC;
  --bg-cool:#F2F6F7;
  --card:#FFFFFF;
  --t-main:#16232B;
  --t-sub:#55666E;
  --t-weak:#8A979D;
  --bd-warm:#E4E0DA;
  --bd-cool:#DCE5E8;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --sh1:0 2px 10px rgba(22,35,43,.06);
  --sh2:0 10px 28px rgba(31,78,95,.12);
  --sh3:0 18px 40px rgba(31,78,95,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  --mono:"Inter","DIN Alternate","SFMono-Regular",Consolas,Menlo,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:1.8;color:var(--t-main);
  background:var(--bg);-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color 220ms var(--ease)}
a:hover{color:var(--c-primary-dark)}
button{font-family:inherit}
ul,ol{padding-left:1.25em}
h1,h2,h3,h4{color:var(--t-main);margin:0;line-height:1.35}
p{margin:0 0 1em}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.container{padding-left:24px;padding-right:24px}
@media (min-width:1400px){.container{max-width:1240px}}

/* ============ 顶部三色细线 ============ */
.tri-line{height:4px;background:linear-gradient(90deg,#4E7A4A 0 33.4%,#FFFFFF 33.4% 66.6%,#B33A2B 66.6% 100%)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(12px);
  -webkit-backdrop-filter:saturate(160%) blur(12px);
  transition:box-shadow 220ms var(--ease),border-color 220ms var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{border-bottom-color:var(--bd-warm);box-shadow:var(--sh1)}
.nav-inner{display:flex;align-items:center;gap:26px;min-height:76px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;position:relative;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-dark));
  box-shadow:0 4px 12px rgba(31,78,95,.22);
}
.brand-mark::after{
  content:'';position:absolute;left:50%;top:50%;width:11px;height:11px;
  transform:translate(-50%,-50%) rotate(45deg);border-radius:2px;background:#F7E9E5;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:19px;font-weight:800;letter-spacing:.02em;color:var(--c-primary-dark)}
.brand-sub{font-size:12px;color:var(--t-weak);letter-spacing:.04em}
.nav-desktop{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-item{
  position:relative;padding:10px 14px;font-size:15px;color:var(--t-sub);
  border-radius:8px;white-space:nowrap;transition:color 220ms var(--ease),background 220ms var(--ease);
}
.nav-item::after{
  content:'';position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform 220ms var(--ease);
}
.nav-item:hover,.nav-item.is-active{color:var(--c-primary)}
.nav-item:hover::after,.nav-item.is-active::after{transform:scaleX(1)}
.nav-item.is-active{font-weight:600}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}

/* Mega Menu */
.mega-wrap{position:relative}
.mega-toggle{
  display:inline-flex;align-items:center;gap:6px;padding:10px 14px;font-size:15px;
  color:var(--t-sub);background:transparent;border:0;border-radius:8px;cursor:pointer;
  transition:color 220ms var(--ease),background 220ms var(--ease);
}
.mega-toggle:hover,.mega-wrap.is-open .mega-toggle,.mega-wrap:focus-within .mega-toggle{color:var(--c-primary);background:var(--c-primary-soft)}
.mega-toggle .chev{transition:transform 220ms var(--ease)}
.mega-wrap.is-open .mega-toggle .chev,.mega-wrap:hover .mega-toggle .chev{transform:rotate(180deg)}
.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:720px;
  display:grid;grid-template-columns:1.1fr 1.2fr .95fr;gap:22px;
  background:#fff;border:1px solid var(--bd-cool);border-radius:var(--r-card);
  box-shadow:var(--sh3);padding:24px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity 220ms var(--ease),transform 220ms var(--ease),visibility 220ms var(--ease);
  z-index:60;
}
.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel,
.mega-wrap.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col-title{font-size:12.5px;letter-spacing:.08em;color:var(--t-weak);margin-bottom:10px;font-weight:600}
.mega-link{
  display:block;padding:9px 12px;border-radius:8px;font-size:14.5px;color:var(--t-sub);
  transition:background 200ms var(--ease),color 200ms var(--ease);
}
.mega-link:hover{background:var(--bg-cool);color:var(--c-primary)}
.mega-card{
  display:block;padding:14px;border:1px solid var(--bd-warm);border-radius:12px;
  margin-bottom:12px;transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease),transform 220ms var(--ease);
}
.mega-card strong{display:block;font-size:14.5px;font-weight:600;color:var(--t-main)}
.mega-card span{display:block;font-size:13px;color:var(--t-weak);margin-top:4px}
.mega-card:hover{border-color:rgba(31,78,95,.28);box-shadow:var(--sh1);transform:translateY(-2px)}
.mega-action{background:var(--bg-cool);border-radius:12px;padding:20px;height:100%}
.mega-action h4{font-size:16px;font-weight:700;margin-bottom:8px}
.mega-action p{font-size:13.5px;color:var(--t-sub);line-height:1.7}

/* 按钮 */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);border:0;
  background:var(--c-primary);color:#fff;font-size:15px;font-weight:600;cursor:pointer;
  transition:background 220ms var(--ease),transform 220ms var(--ease),box-shadow 220ms var(--ease);
}
.btn-main:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh2)}
.btn-main:active{transform:translateY(0);box-shadow:none}
.btn-main:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.btn-main.btn-sm{height:42px;padding:0 18px;font-size:14.5px}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);background:transparent;
  border:1.5px solid var(--c-primary);color:var(--c-primary);font-size:15px;font-weight:600;cursor:pointer;
  transition:background 220ms var(--ease),color 220ms var(--ease),transform 220ms var(--ease);
}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(0)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary);
  padding:6px 0;border:0;background:none;cursor:pointer;
}
.btn-text i{transition:transform 220ms var(--ease)}
.btn-text:hover i{transform:translateX(4px)}
.btn-ghost-white{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;
  border-radius:var(--r-btn);background:#fff;color:var(--c-primary-dark);font-weight:600;font-size:15px;
  transition:background 220ms var(--ease),transform 220ms var(--ease);
}
.btn-ghost-white:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);transform:translateY(-2px)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--bd-cool);
  background:#fff;color:var(--c-primary);font-size:17px;align-items:center;justify-content:center;
}

/* 抽屉导航 */
.offcanvas.mobile-nav{width:320px;border:0}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--bd-warm);padding:18px 20px}
.mobile-nav .brand-name{font-size:17px}
.mobile-nav .offcanvas-body{padding:14px 12px 24px}
.m-nav-link{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:10px;
  font-size:15.5px;color:var(--t-sub);font-weight:500;
}
.m-nav-link:hover,.m-nav-link.is-active{background:var(--c-primary-soft);color:var(--c-primary)}
.m-group-title{font-size:12.5px;letter-spacing:.08em;color:var(--t-weak);padding:18px 14px 8px;font-weight:600}
.m-sub{display:block;min-height:44px;line-height:44px;padding:0 14px;border-radius:10px;font-size:14.5px;color:var(--t-sub)}
.m-sub:hover{background:var(--bg-cool);color:var(--c-primary)}

/* ============ 面包屑 ============ */
.crumb-bar{border-bottom:1px solid var(--bd-warm);background:#fff}
.crumb-bar .inner{padding:16px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;padding:0;margin:0;font-size:14px}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:'/';color:var(--t-weak)}
.crumbs a{color:var(--c-primary)}
.crumbs a:hover{text-decoration:underline}
.crumbs .current{color:var(--t-sub);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.crumb-note{font-size:13px;color:var(--t-weak)}

/* ============ 文章头 ============ */
.article-head{padding:44px 0 8px}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:12.5px;font-weight:600;letter-spacing:.04em;
}
.badge-soft{background:var(--c-accent-soft);color:var(--c-accent)}
.article-head h1{
  font-size:40px;font-weight:700;line-height:1.3;margin:18px 0 0;letter-spacing:-.01em;max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:22px;margin-top:20px;font-size:14px;color:var(--t-sub)}
.article-meta span{display:inline-flex;align-items:center;gap:8px}
.article-meta i{color:var(--c-primary);font-size:14px}
.article-lead{
  margin-top:22px;font-size:17.5px;line-height:1.9;color:var(--t-sub);
  padding-left:18px;border-left:3px solid var(--c-accent);
}
.article-cover{
  margin-top:34px;border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/9;
  box-shadow:var(--sh1);background:var(--bg-alt);
}
.article-cover img{width:100%;height:100%;object-fit:cover}
.article-cover figcaption{font-size:13.5px;color:var(--t-weak);padding:12px 4px 0}

/* ============ 正文布局 ============ */
.article-layout{padding:48px 0 96px}
.article-body{
  background:#fff;border:1px solid var(--bd-warm);border-radius:var(--r-card);
  padding:44px 46px;box-shadow:var(--sh1);font-size:17px;line-height:1.9;color:#22323b;
  overflow-wrap:break-word;word-break:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.45em}
.article-body > p:first-of-type{font-size:18px;color:#1b2b34}
.article-body h2{
  position:relative;font-size:26px;font-weight:700;margin:2.2em 0 .85em;padding-left:16px;line-height:1.4;
}
.article-body h2::before{
  content:'';position:absolute;left:0;top:.28em;width:4px;height:1em;border-radius:2px;background:var(--c-primary);
}
.article-body h3{font-size:20.5px;font-weight:600;margin:1.9em 0 .6em;color:var(--c-primary-dark)}
.article-body h4{font-size:17.5px;font-weight:600;margin:1.5em 0 .5em}
.article-body ul,.article-body ol{margin:0 0 1.45em;padding-left:1.35em}
.article-body li{margin-bottom:.55em;line-height:1.85}
.article-body ul li::marker{color:var(--c-primary)}
.article-body ol li::marker{color:var(--c-accent);font-weight:600}
.article-body blockquote{
  margin:1.8em 0;padding:18px 22px;background:var(--c-accent-soft);
  border-left:3px solid var(--c-accent);border-radius:0 12px 12px 0;color:#4a3a34;font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:1.8em auto;max-width:100%}
.article-body figure{margin:1.8em 0}
.article-body figure img{margin:0 auto}
.article-body figcaption{font-size:13.5px;color:var(--t-weak);text-align:center;margin-top:10px}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(31,78,95,.35)}
.article-body a:hover{color:var(--c-accent);border-bottom-color:var(--c-accent)}
.article-body table{
  width:100%;border-collapse:collapse;display:block;overflow-x:auto;margin:1.6em 0;font-size:15.5px;
}
.article-body th,.article-body td{border:1px solid var(--bd-cool);padding:12px 16px;text-align:left}
.article-body th{background:var(--c-primary-soft);color:var(--c-primary-dark);font-weight:600}
.article-body tr:nth-child(even) td{background:#FBFDFD}
.article-body pre{
  background:var(--c-primary-dark);color:#E6EEF1;padding:20px 22px;border-radius:12px;
  overflow-x:auto;font-family:var(--mono);font-size:14.5px;line-height:1.7;margin:1.6em 0;
}
.article-body code{font-family:var(--mono);font-size:.94em;background:var(--bg-cool);padding:2px 6px;border-radius:6px}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body hr{border:0;border-top:1px solid var(--bd-warm);margin:2.4em 0}

/* 正文底部 */
.article-foot{margin-top:40px;padding-top:26px;border-top:1px solid var(--bd-warm)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.tag-label{font-size:13px;color:var(--t-weak);letter-spacing:.06em;margin-right:4px}
.tag-pill{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:13px;font-weight:500;letter-spacing:.04em;
  transition:background 220ms var(--ease),color 220ms var(--ease);
}
.tag-pill:hover{background:var(--c-primary);color:#fff}
.share-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:22px}
.share-btn{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;border-radius:10px;
  border:1px solid var(--bd-cool);background:#fff;color:var(--t-sub);font-size:14px;
  transition:border-color 220ms var(--ease),color 220ms var(--ease),transform 220ms var(--ease);
}
.share-btn:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px)}

/* 无内容态 */
.empty-state{
  text-align:center;padding:72px 24px;background:#fff;border:1px solid var(--bd-warm);
  border-radius:var(--r-card);box-shadow:var(--sh1);
}
.empty-state i{font-size:38px;color:var(--c-primary-soft);background:var(--c-primary-soft);color:var(--c-primary);width:76px;height:76px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:30px}
.empty-state h2{font-size:22px;margin:22px 0 10px}
.empty-state p{color:var(--t-sub);margin-bottom:22px}

/* ============ 侧栏 ============ */
.side-sticky{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:#fff;border:1px solid var(--bd-warm);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh1);
}
.side-card h3{
  display:flex;align-items:center;gap:9px;font-size:16.5px;font-weight:700;margin:0 0 16px;
}
.side-card h3::before{content:'';width:3px;height:15px;border-radius:2px;background:var(--c-primary)}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;font-size:14.5px;color:var(--t-sub);padding:8px 10px;
  border-left:2px solid transparent;border-radius:0 8px 8px 0;line-height:1.6;
  transition:background 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease);
}
.toc-list a:hover{background:var(--bg-cool);color:var(--c-primary)}
.toc-list a.is-active{background:var(--c-primary-soft);color:var(--c-primary);border-left-color:var(--c-accent);font-weight:600}
.toc-empty{display:none;font-size:14px;color:var(--t-weak);line-height:1.7}
.toc-card.is-empty .toc-list{display:none}
.toc-card.is-empty .toc-empty{display:block}

.side-rec{display:flex;gap:12px;padding:10px;border-radius:12px;transition:background 220ms var(--ease)}
.side-rec + .side-rec{margin-top:4px}
.side-rec:hover{background:var(--bg-cool)}
.side-rec .thumb{width:68px;height:50px;border-radius:8px;overflow:hidden;flex:0 0 auto;background:var(--bg-alt)}
.side-rec .thumb img{width:100%;height:100%;object-fit:cover}
.side-rec strong{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:14px;font-weight:600;color:var(--t-main);line-height:1.55;
}
.side-rec span{display:block;font-size:12.5px;color:var(--t-weak);margin-top:6px}
.side-rec:hover strong{color:var(--c-primary)}

.side-cta{background:linear-gradient(150deg,var(--c-primary),var(--c-primary-dark));border:0;color:#fff}
.side-cta h3{color:#fff}
.side-cta h3::before{background:var(--c-accent)}
.side-cta p{font-size:14px;color:rgba(255,255,255,.82);line-height:1.75}
.side-cta .btn-ghost-white{width:100%}
.side-cta .mini-note{font-size:12.5px;color:rgba(255,255,255,.62);margin:12px 0 0;text-align:center}

/* ============ 上下篇 ============ */
.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:44px}
.pn-card{
  display:block;background:#fff;border:1px solid var(--bd-cool);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--sh1);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.pn-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:rgba(31,78,95,.22)}
.pn-label{font-size:12.5px;letter-spacing:.08em;color:var(--t-weak);display:flex;align-items:center;gap:8px}
.pn-label i{color:var(--c-accent)}
.pn-title{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:16.5px;font-weight:600;color:var(--t-main);margin-top:10px;line-height:1.6;
}
.pn-card:hover .pn-title{color:var(--c-primary)}

/* ============ 相关推荐 ============ */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section-head h2{font-size:30px;font-weight:700;letter-spacing:-.01em}
.section-head p{font-size:15px;color:var(--t-sub);margin:8px 0 0}
.rel-block{padding:72px 0 0}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--bd-warm);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh1);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:rgba(31,78,95,.2)}
.rel-card .cover{aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt)}
.rel-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease)}
.rel-card:hover .cover img{transform:scale(1.04)}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.rel-body h3{
  font-size:16.5px;font-weight:600;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-card:hover h3{color:var(--c-primary)}
.rel-body p{
  font-size:14px;color:var(--t-sub);margin:10px 0 0;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-meta{display:flex;align-items:center;gap:14px;margin-top:16px;font-size:12.8px;color:var(--t-weak)}

/* ============ 页脚前 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;background:var(--c-primary-dark);margin-top:88px;
}
.cta-band::before{
  content:'';position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;opacity:.2;
}
.cta-band .inner{position:relative;padding:54px 52px;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:30px;font-weight:700;max-width:620px}
.cta-band p{color:rgba(255,255,255,.82);font-size:15.5px;margin:14px 0 0;max-width:620px;line-height:1.8}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-primary-dark);color:rgba(255,255,255,.78);margin-top:96px;padding:72px 0 0}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);box-shadow:none}
.footer-brand .brand-mark::after{background:#F7E9E5}
.footer-brand .brand-name{color:#fff;font-size:18px;font-weight:800}
.footer-brand .brand-sub{color:rgba(255,255,255,.55)}
.footer-desc{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.68);max-width:400px}
.site-footer h4{font-size:15.5px;font-weight:700;color:#fff;margin-bottom:18px}
.site-footer a{display:block;font-size:14.5px;color:rgba(255,255,255,.72);padding:6px 0;transition:color 200ms var(--ease),padding-left 200ms var(--ease)}
.site-footer a:hover{color:#fff;padding-left:4px;text-decoration:underline;text-underline-offset:4px}
.footer-contact{list-style:none;padding:0;margin:0}
.footer-contact li{display:flex;gap:10px;font-size:14.5px;padding:6px 0;color:rgba(255,255,255,.72);line-height:1.7}
.footer-contact i{color:#B9D3DA;margin-top:5px}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:rgba(255,255,255,.55);
}

/* 返回顶部 */
.to-top{
  position:fixed;right:26px;bottom:26px;width:48px;height:48px;border-radius:14px;border:0;
  background:var(--c-primary);color:#fff;font-size:17px;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh2);opacity:0;visibility:hidden;transform:translateY(10px);cursor:pointer;z-index:90;
  transition:opacity 220ms var(--ease),transform 220ms var(--ease),visibility 220ms var(--ease),background 220ms var(--ease);
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--c-primary-dark);transform:translateY(-3px)}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .mega-panel{width:640px;grid-template-columns:1fr 1fr;gap:18px}
  .mega-action{grid-column:1/-1}
  .article-head h1{font-size:34px}
  .article-body{padding:38px 34px}
}
@media (max-width:991.98px){
  .nav-desktop{display:none}
  .nav-toggle{display:inline-flex}
  .nav-inner{min-height:68px;gap:14px}
  .nav-right .btn-main{display:none}
  .brand-sub{display:none}
  .article-body{padding:32px 26px;font-size:16.5px}
  .article-body h2{font-size:23px}
  .side-sticky{position:static;margin-top:32px}
  .rel-grid{grid-template-columns:1fr 1fr}
  .cta-band .inner{padding:44px 34px}
  .site-footer{padding-top:56px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .container{padding-left:18px;padding-right:18px}
  .article-head{padding:30px 0 4px}
  .article-head h1{font-size:29px}
  .article-meta{gap:14px;font-size:13.5px}
  .article-lead{font-size:16px;padding-left:14px}
  .article-layout{padding:32px 0 64px}
  .article-body{padding:26px 20px;border-radius:12px;box-shadow:none}
  .article-body h2{font-size:21px;margin-top:1.9em}
  .article-body h3{font-size:18.5px}
  .article-body > p:first-of-type{font-size:17px}
  .pn-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .section-head h2{font-size:24px}
  .cta-band{border-radius:16px;margin-top:64px}
  .cta-band .inner{padding:34px 22px}
  .cta-band h2{font-size:23px}
  .cta-actions{width:100%}
  .cta-actions .btn-main,.cta-actions .btn-ghost-white{width:100%}
  .site-footer{margin-top:64px}
  .footer-bottom{flex-direction:column;gap:8px}
  .to-top{right:16px;bottom:16px;width:44px;height:44px}
  .crumbs .current{max-width:200px}
}
@media (max-width:575.98px){
  .brand-name{font-size:17px}
  .article-head h1{font-size:26px}
  .article-meta span{font-size:13px}
  .side-card{padding:18px}
}

/* roulang page: category1 */
/* ================= 设计变量 ================= */
:root{
  --c-primary:#1F4E5F;
  --c-primary-d:#143642;
  --c-primary-l:#E6EEF1;
  --c-accent:#C4553B;
  --c-accent-l:#F7E9E5;
  --c-positive:#6E7F5C;
  --c-bg:#FAF8F5;
  --c-bg-alt:#F4F1EC;
  --c-bg-cool:#F2F6F7;
  --sur:#FFFFFF;
  --t-1:#16232B;
  --t-2:#55666E;
  --t-3:#8A979D;
  --bd-w:#E4E0DA;
  --bd-c:#DCE5E8;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --sh-1:0 2px 10px rgba(22,35,43,.06);
  --sh-2:0 10px 28px rgba(31,78,95,.12);
  --sh-3:0 18px 40px rgba(31,78,95,.16);
  --ez:cubic-bezier(.2,.7,.3,1);
  --font-mono:"Inter","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
/* ================= 基础 reset ================= */
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;background:var(--c-bg);color:var(--t-1);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16.5px;line-height:1.8;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color 220ms var(--ez);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;
}
/* ================= 容器 ================= */
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;}
@media (min-width:1400px){.container{max-width:1240px;}}
@media (max-width:767px){.container{padding-left:18px;padding-right:18px;}}
/* ================= 顶部三色线 ================= */
.top-tricolor{height:4px;background:linear-gradient(90deg,#4E7A4A 0 33.33%,#FFFFFF 33.33% 66.66%,#B33A2B 66.66% 100%);}
/* ================= 导航 ================= */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:saturate(160%) blur(12px);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid transparent;
  transition:box-shadow 220ms var(--ez),border-color 220ms var(--ez);
}
.site-header.is-scrolled{border-bottom-color:var(--bd-c);box-shadow:var(--sh-1);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:78px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex:0 0 auto;position:relative;
  background:linear-gradient(140deg,#1F4E5F 0%,#2E6A7E 100%);
  box-shadow:0 4px 12px rgba(31,78,95,.22);
}
.brand-mark::before{
  content:"";position:absolute;inset:11px;border:2px solid rgba(255,255,255,.86);border-radius:50%;
}
.brand-mark::after{
  content:"";position:absolute;left:50%;top:50%;width:5px;height:5px;margin:-2.5px 0 0 -2.5px;
  border-radius:50%;background:var(--c-accent);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:17px;font-weight:700;color:var(--c-primary-d);letter-spacing:.02em;}
.brand-sub{font-size:11.5px;color:var(--t-3);letter-spacing:.06em;}
.nav-desktop{display:flex;align-items:center;gap:6px;}
.nav-item{
  position:relative;padding:10px 12px;font-size:15px;color:var(--t-2);border-radius:8px;
  transition:color 220ms var(--ez),background 220ms var(--ez);
}
.nav-item::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform 220ms var(--ez);
}
.nav-item:hover{color:var(--c-primary);background:var(--c-bg-cool);}
.nav-item:hover::after,.nav-item.is-active::after{transform:scaleX(1);}
.nav-item.is-active{color:var(--c-primary);font-weight:600;}
/* Mega */
.mega-wrap{position:relative;}
.mega-toggle{
  display:inline-flex;align-items:center;gap:6px;padding:10px 14px;border:1.5px solid var(--bd-c);
  background:transparent;border-radius:999px;color:var(--t-2);font-size:15px;cursor:pointer;
  transition:all 220ms var(--ez);
}
.mega-toggle:hover,.mega-toggle[aria-expanded="true"]{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-bg-cool);}
.mega-toggle .chev{transition:transform 220ms var(--ez);}
.mega-toggle[aria-expanded="true"] .chev{transform:rotate(180deg);}
.mega-panel{
  position:absolute;top:calc(100% + 16px);left:50%;width:740px;
  transform:translateX(-50%) translateY(10px);
  background:#fff;border-radius:var(--r-card);box-shadow:var(--sh-3);
  padding:26px;display:grid;grid-template-columns:1.05fr 1.25fr 1fr;gap:24px;
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity 220ms var(--ez),transform 220ms var(--ez),visibility 220ms var(--ez);
  border:1px solid var(--bd-c);
}
.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel,
.mega-wrap.is-open .mega-panel{
  opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0);
}
.mega-col-title{font-size:12.5px;font-weight:600;letter-spacing:.08em;color:var(--t-3);margin-bottom:12px;}
.mega-link{
  display:block;padding:9px 12px;font-size:14.5px;color:var(--t-2);border-radius:8px;
  transition:background 200ms var(--ez),color 200ms var(--ez);
}
.mega-link:hover{background:var(--c-bg-cool);color:var(--c-primary);}
.mega-card{
  display:block;padding:12px 14px;border-radius:10px;border:1px solid var(--bd-w);margin-bottom:10px;
  transition:all 220ms var(--ez);
}
.mega-card strong{display:block;font-size:14.5px;font-weight:600;color:var(--t-1);}
.mega-card span{display:block;font-size:12.5px;color:var(--t-3);margin-top:2px;}
.mega-card:hover{border-color:var(--c-primary);box-shadow:var(--sh-1);transform:translateY(-2px);}
.mega-action{background:var(--c-primary-l);border-radius:12px;padding:18px;}
.mega-action h4{font-size:15px;font-weight:700;color:var(--c-primary-d);margin-bottom:8px;}
.mega-action p{font-size:13px;color:var(--t-2);line-height:1.7;margin-bottom:14px;}
/* 导航右侧 */
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  width:44px;height:44px;border-radius:10px;border:1.5px solid var(--bd-c);background:#fff;
  color:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:all 220ms var(--ez);
}
.nav-toggle:hover{border-color:var(--c-primary);background:var(--c-bg-cool);}
/* 按钮 */
.btn-main,.btn-ghost,.btn-white{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);border:1.5px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background 220ms var(--ez),color 220ms var(--ez),transform 220ms var(--ez),box-shadow 220ms var(--ez),border-color 220ms var(--ez);
}
.btn-main{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(31,78,95,.18);}
.btn-main:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-main:active{transform:translateY(0);box-shadow:0 2px 8px rgba(31,78,95,.2);}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-l);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-white{background:#fff;color:var(--c-primary-d);}
.btn-white:hover{background:var(--c-primary-l);transform:translateY(-2px);}
.btn-sm{height:42px;padding:0 18px;font-size:14.5px;}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:8px;color:var(--c-primary);font-weight:600;font-size:15px;
  padding:6px 0;position:relative;
}
.btn-link-arrow i{transition:transform 220ms var(--ez);}
.btn-link-arrow:hover{color:var(--c-primary-d);}
.btn-link-arrow:hover i{transform:translateX(4px);}
.btn-link-arrow::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform 220ms var(--ez);
}
.btn-link-arrow:hover::after{transform:scaleX(1);}
/* ================= 通用区块 ================= */
.sec{padding:96px 0;}
.sec-alt{background:var(--c-bg-alt);}
.sec-cool{background:var(--c-bg-cool);}
.sec-head{max-width:720px;margin-bottom:48px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;letter-spacing:.1em;
  color:var(--c-accent);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--c-accent);}
h1{font-size:46px;font-weight:700;line-height:1.25;color:var(--c-primary-d);letter-spacing:-.01em;}
h2{font-size:34px;font-weight:700;line-height:1.3;color:var(--c-primary-d);}
h3{font-size:22px;font-weight:600;line-height:1.4;color:var(--t-1);}
h4{font-size:18px;font-weight:600;line-height:1.5;color:var(--t-1);}
.lead{font-size:17px;color:var(--t-2);line-height:1.85;}
.muted{color:var(--t-2);}
.small{font-size:14px;color:var(--t-2);line-height:1.7;}
/* 徽章 */
.badge-cat,.badge-status,.badge-area{
  display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;
  font-size:12.5px;font-weight:500;letter-spacing:.04em;line-height:1.4;
}
.badge-cat{background:var(--c-primary-l);color:var(--c-primary);}
.badge-status{background:var(--c-accent-l);color:var(--c-accent);}
.badge-area{background:#EDF1E8;color:var(--c-positive);}
/* ================= 页头 ================= */
.page-hero{position:relative;overflow:hidden;padding:40px 0 84px;background:var(--c-primary-l);}
.page-hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;opacity:.24;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(250,248,245,.97) 0%,rgba(250,248,245,.88) 46%,rgba(250,248,245,.62) 100%);
}
.page-hero-inner{position:relative;z-index:2;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--t-3);margin-bottom:28px;}
.crumbs a{color:var(--c-primary);font-weight:500;}
.crumbs a:hover{color:var(--c-primary-d);text-decoration:underline;text-underline-offset:3px;}
.crumbs .sep{color:var(--bd-w);}
.page-hero h1{margin:16px 0 18px;}
.page-hero-desc{font-size:17px;color:var(--t-2);max-width:600px;line-height:1.85;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:30px;}
.hero-figure{
  border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-2);border:1px solid rgba(255,255,255,.7);
  aspect-ratio:16/11;background:#fff;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-facts{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;}
.hero-fact{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--t-2);}
.hero-fact i{color:var(--c-primary);font-size:15px;}
/* ================= 简介 ================= */
.intro-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.intro-aside{
  background:#fff;border:1px solid var(--bd-w);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);
  position:sticky;top:110px;
}
.intro-aside h3{font-size:19px;margin-bottom:14px;}
.intro-list li{display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed var(--bd-w);font-size:15px;color:var(--t-2);}
.intro-list li:last-child{border-bottom:0;}
.intro-list i{color:var(--c-accent);font-size:13px;margin-top:7px;flex:0 0 auto;}
.intro-main p+p{margin-top:20px;}
.intro-main p{font-size:16.5px;color:var(--t-2);line-height:1.9;}
.intro-main p:first-of-type{font-size:17.5px;color:var(--t-1);}
.intro-main h2{margin-bottom:22px;}
.inline-figure{
  margin-top:32px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--bd-w);
  box-shadow:var(--sh-1);aspect-ratio:16/9;background:#fff;
}
.inline-figure img{width:100%;height:100%;object-fit:cover;}
.inline-caption{font-size:13px;color:var(--t-3);margin-top:10px;}
/* ================= 编号清单 ================= */
.steps-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px 32px;}
.step-item{
  display:flex;gap:18px;padding:26px;border-radius:var(--r-card);background:#fff;border:1px solid var(--bd-w);
  box-shadow:var(--sh-1);transition:transform 220ms var(--ez),box-shadow 220ms var(--ez),border-color 220ms var(--ez);
}
.step-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(31,78,95,.28);}
.step-item.offset{transform:translateY(26px);}
.step-item.offset:hover{transform:translateY(22px);}
.step-num{
  font-family:var(--font-mono);font-size:15px;font-weight:700;color:var(--c-accent);
  width:42px;height:42px;border-radius:12px;background:var(--c-accent-l);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;letter-spacing:.02em;
}
.step-body h3{font-size:18px;margin-bottom:8px;}
.step-body p{font-size:14.5px;color:var(--t-2);line-height:1.8;}
/* ================= 场景对比 ================= */
.compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:0;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);border:1px solid var(--bd-w);}
.compare-col{padding:36px 34px;background:#fff;}
.compare-col.after{background:var(--c-primary-l);border-left:1px solid var(--bd-c);}
.compare-col h3{font-size:21px;margin-bottom:6px;}
.compare-col .sub{font-size:13.5px;color:var(--t-3);margin-bottom:24px;display:block;}
.compare-row{padding:16px 0;border-bottom:1px dashed rgba(22,35,43,.12);}
.compare-row:last-child{border-bottom:0;}
.compare-dim{font-size:12.5px;letter-spacing:.08em;color:var(--t-3);font-weight:600;display:block;margin-bottom:6px;}
.compare-txt{font-size:15.5px;color:var(--t-1);display:flex;gap:10px;align-items:flex-start;}
.compare-col.after .compare-txt{color:var(--c-primary-d);font-weight:500;}
.compare-col.after .compare-txt i{color:var(--c-positive);font-size:14px;margin-top:6px;flex:0 0 auto;}
.compare-col .compare-txt i{color:var(--t-3);font-size:14px;margin-top:6px;flex:0 0 auto;}
/* ================= 数据条 ================= */
.stage-list{display:grid;gap:18px;}
.stage-item{
  display:grid;grid-template-columns:200px 1fr 120px;gap:24px;align-items:center;
  background:#fff;border:1px solid var(--bd-w);border-radius:var(--r-card);padding:24px 28px;
  box-shadow:var(--sh-1);transition:box-shadow 220ms var(--ez),transform 220ms var(--ez);
}
.stage-item:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.stage-name{font-size:13px;letter-spacing:.08em;color:var(--c-accent);font-weight:600;margin-bottom:4px;display:block;}
.stage-title{font-size:16.5px;font-weight:600;color:var(--c-primary-d);}
.stage-desc{font-size:14.5px;color:var(--t-2);line-height:1.75;}
.bar-track{height:6px;border-radius:999px;background:var(--c-primary-l);overflow:hidden;margin-top:10px;}
.bar-fill{height:100%;border-radius:999px;background:var(--c-primary);}
.bar-fill.accent{background:var(--c-accent);}
.bar-fill.green{background:var(--c-positive);}
.stage-mark{text-align:right;font-family:var(--font-mono);font-size:13px;color:var(--t-3);letter-spacing:.06em;}
/* ================= FAQ ================= */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-side h2{margin-bottom:16px;}
.faq-side p{font-size:15.5px;color:var(--t-2);}
.faq-acc .accordion-item{
  background:#fff;border:1px solid var(--bd-w);border-radius:12px !important;margin-bottom:14px;
  overflow:hidden;box-shadow:var(--sh-1);
}
.faq-acc .accordion-button{
  background:#fff;color:var(--t-1);font-size:16.5px;font-weight:600;padding:20px 24px 20px 28px;
  border:0;box-shadow:none !important;position:relative;
}
.faq-acc .accordion-button::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:0 3px 3px 0;background:var(--bd-w);
  transition:background 220ms var(--ez);
}
.faq-acc .accordion-button:not(.collapsed){color:var(--c-primary);background:var(--c-bg-cool);}
.faq-acc .accordion-button:not(.collapsed)::before{background:var(--c-primary);}
.faq-acc .accordion-button::after{
  background-image:none;content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;
  color:var(--t-3);width:auto;height:auto;transition:transform 220ms var(--ez);transform-origin:center;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(180deg);color:var(--c-primary);}
.faq-acc .accordion-body{padding:4px 28px 24px;font-size:15.5px;color:var(--t-2);line-height:1.85;}
/* ================= 表单 / CTA ================= */
.cta-panel{
  background:var(--c-primary-l);border-radius:20px;padding:56px;border:1px solid var(--bd-c);
}
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.assure-list{margin-top:26px;display:grid;gap:14px;}
.assure-list li{display:flex;gap:12px;font-size:15px;color:var(--t-2);align-items:flex-start;}
.assure-list i{color:var(--c-positive);font-size:15px;margin-top:5px;flex:0 0 auto;}
.form-card{background:#fff;border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-1);border:1px solid var(--bd-w);}
.form-row{margin-bottom:20px;}
.form-row label{display:block;font-size:14px;font-weight:600;color:var(--t-1);margin-bottom:8px;}
.form-row label .req{color:var(--c-accent);margin-left:3px;}
.form-control,.form-select{
  width:100%;height:48px;border-radius:var(--r-btn);border:1.5px solid var(--bd-w);background:#fff;
  padding:0 16px;font-size:15px;color:var(--t-1);transition:border-color 220ms var(--ez),box-shadow 220ms var(--ez);
  appearance:none;
}
textarea.form-control{height:auto;min-height:118px;padding:14px 16px;line-height:1.7;resize:vertical;}
.form-control::placeholder{color:var(--t-3);}
.form-control:focus,.form-select:focus{
  border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(31,78,95,.12);outline:none;
}
.form-select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4.5 6 8.5 10 4.5' fill='none' stroke='%2355666E' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 16px center;padding-right:42px;
}
.form-check{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--t-2);}
.form-check input{width:18px;height:18px;margin-top:4px;accent-color:var(--c-primary);flex:0 0 auto;}
.privacy-note{font-size:12.5px;color:var(--t-3);margin-top:14px;line-height:1.7;}
.form-msg{margin-top:16px;font-size:14px;color:var(--c-positive);display:none;align-items:center;gap:8px;}
.form-msg.show{display:flex;}
/* ================= 页脚 ================= */
.site-footer{background:var(--c-primary-d);color:rgba(255,255,255,.78);padding:72px 0 28px;margin-top:0;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.55);}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:.04em;}
.site-footer a{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:6px 0;transition:color 200ms var(--ez),padding-left 200ms var(--ez);}
.site-footer a:hover{color:#fff;padding-left:4px;text-decoration:underline;text-underline-offset:3px;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:340px;}
.footer-contact li{display:flex;gap:10px;font-size:14px;padding:6px 0;color:rgba(255,255,255,.72);align-items:flex-start;}
.footer-contact i{margin-top:5px;color:rgba(255,255,255,.5);font-size:13px;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px;color:rgba(255,255,255,.55);
}
/* 返回顶部 */
.to-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:12px;border:0;
  background:var(--c-primary);color:#fff;cursor:pointer;box-shadow:var(--sh-2);
  display:flex;align-items:center;justify-content:center;font-size:15px;
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all 220ms var(--ez);z-index:1040;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--c-primary-d);transform:translateY(-2px);}
/* Offcanvas 移动导航 */
.offcanvas{--bs-offcanvas-width:320px;}
.mobile-nav{background:#fff;}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--bd-c);padding:18px 22px;}
.mobile-nav .offcanvas-body{padding:14px 22px 32px;}
.m-link{
  display:flex;align-items:center;justify-content:space-between;min-height:48px;padding:0 4px;font-size:16px;
  color:var(--t-1);border-bottom:1px solid var(--bd-w);
}
.m-link:hover,.m-link.is-active{color:var(--c-primary);}
.m-group-title{font-size:12.5px;letter-spacing:.09em;color:var(--t-3);font-weight:600;margin:22px 0 6px;}
/* ================= 响应式 ================= */
@media (max-width:1199px){
  h1{font-size:40px;}
  h2{font-size:30px;}
  .stage-item{grid-template-columns:170px 1fr;gap:18px;}
  .stage-mark{display:none;}
}
@media (max-width:991px){
  .nav-desktop{display:none;}
  .nav-toggle{display:inline-flex;}
  .sec{padding:72px 0;}
  .intro-grid,.faq-layout,.cta-grid{grid-template-columns:1fr;gap:32px;}
  .intro-aside{position:static;}
  .cta-panel{padding:36px 26px;}
  .mega-panel{display:none;}
}
@media (max-width:767px){
  body{font-size:16px;}
  h1{font-size:32px;}
  h2{font-size:25px;}
  h3{font-size:19px;}
  .page-hero{padding:28px 0 56px;}
  .sec{padding:56px 0;}
  .steps-grid{grid-template-columns:1fr;}
  .step-item.offset{transform:none;}
  .step-item.offset:hover{transform:translateY(-4px);}
  .compare-wrap{grid-template-columns:1fr;}
  .compare-col.after{border-left:0;border-top:1px solid var(--bd-c);}
  .stage-item{grid-template-columns:1fr;}
  .brand-sub{display:none;}
  .form-card{padding:24px 20px;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:575px){
  h1{font-size:30px;}
  .brand-name{font-size:15.5px;}
  .cta-panel{padding:28px 18px;}
  .step-item{padding:20px;}
}

/* roulang page: category2 */
:root{
  --c-main:#1F4E5F;
  --c-main-dark:#143642;
  --c-main-light:#E6EEF1;
  --c-terra:#C4553B;
  --c-terra-light:#F7E9E5;
  --c-olive:#6E7F5C;
  --c-bg:#FAF8F5;
  --c-card:#FFFFFF;
  --c-alt:#F4F1EC;
  --c-alt2:#F2F6F7;
  --t-main:#16232B;
  --t-sub:#55666E;
  --t-weak:#8A979D;
  --bd-warm:#E4E0DA;
  --bd-cool:#DCE5E8;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --sh-1:0 2px 10px rgba(22,35,43,.06);
  --sh-2:0 10px 28px rgba(31,78,95,.12);
  --sh-3:0 18px 40px rgba(31,78,95,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"DIN Alternate","Inter",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.8;
  color:var(--t-main);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:1.15em;}
::selection{background:var(--c-main-light);color:var(--c-main-dark);}
:focus-visible{outline:2px solid var(--c-main);outline-offset:2px;border-radius:4px;}

body .container{max-width:1240px;padding-left:24px;padding-right:24px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:box-shadow .22s var(--ease),border-color .22s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header::before{
  content:"";display:block;height:4px;
  background:linear-gradient(90deg,#4E7A4A 0 33.33%,#FFFFFF 33.33% 66.66%,#B33A2B 66.66% 100%);
}
.site-header.is-scrolled{border-bottom:1px solid var(--bd-cool);box-shadow:var(--sh-1);}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:76px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex-shrink:0;
  background:
    radial-gradient(circle at 30% 30%,rgba(255,255,255,.45),transparent 55%),
    linear-gradient(140deg,var(--c-main) 0%,var(--c-main-dark) 100%);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;right:9px;bottom:9px;width:10px;height:10px;border-radius:50%;
  background:var(--c-terra);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--c-main-dark);}
.brand-sub{font-size:12px;color:var(--t-weak);letter-spacing:.04em;}

.nav-desktop{display:flex;align-items:center;gap:6px;}
.nav-item{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;font-size:15.5px;font-weight:500;color:var(--t-sub);
  border-radius:8px;transition:color .22s var(--ease);
}
.nav-item::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--c-main);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-item:hover{color:var(--c-main);}
.nav-item:hover::after{transform:scaleX(1);}
.nav-item.is-active{color:var(--c-main);font-weight:600;}
.nav-item.is-active::after{transform:scaleX(1);}

.mega-wrap{position:relative;}
.mega-toggle{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;font-size:15.5px;font-weight:500;color:var(--t-sub);
  background:transparent;border:0;border-radius:8px;cursor:pointer;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.mega-toggle:hover,.mega-toggle[aria-expanded="true"]{color:var(--c-main);background:var(--c-alt2);}
.chev{transition:transform .22s var(--ease);}
.mega-toggle[aria-expanded="true"] .chev{transform:rotate(180deg);}
.mega-panel{
  position:absolute;top:calc(100% + 12px);left:50%;
  transform:translateX(-50%) translateY(10px);
  width:min(760px,88vw);
  background:#fff;border:1px solid var(--bd-cool);border-radius:14px;
  box-shadow:var(--sh-3);padding:24px;
  display:grid;grid-template-columns:1fr 1.15fr .95fr;gap:22px;
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
  z-index:1050;
}
.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel,
.mega-wrap.is-open .mega-panel{
  opacity:1;visibility:visible;pointer-events:auto;
  transform:translateX(-50%) translateY(0);
}
.mega-col-title{
  font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--t-weak);
  text-transform:uppercase;margin-bottom:10px;
}
.mega-link{
  display:block;padding:9px 12px;border-radius:9px;
  font-size:15px;color:var(--t-sub);
  transition:background .22s var(--ease),color .22s var(--ease);
}
.mega-link:hover{background:var(--c-alt2);color:var(--c-main);}
.mega-link.is-current{background:var(--c-main-light);color:var(--c-main);font-weight:600;}
.mega-card{
  display:block;padding:12px;border-radius:12px;border:1px solid var(--bd-warm);
  margin-bottom:10px;background:#fff;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.mega-card:hover{border-color:rgba(31,78,95,.28);box-shadow:var(--sh-1);transform:translateY(-2px);}
.mega-card strong{display:block;font-size:14.5px;font-weight:600;color:var(--t-main);}
.mega-card span{display:block;font-size:13px;color:var(--t-weak);margin-top:3px;}
.mega-action{
  background:var(--c-main-light);border-radius:12px;padding:18px;
}
.mega-action h4{font-size:15px;font-weight:700;color:var(--c-main-dark);margin-bottom:8px;}
.mega-action p{font-size:13.5px;line-height:1.7;color:var(--t-sub);margin-bottom:14px;}

.nav-right{display:flex;align-items:center;gap:12px;}

/* ---------- 按钮 ---------- */
.btn-main,.btn-ghost,.btn-invert{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;line-height:1;border:1.5px solid transparent;
  cursor:pointer;transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-main{background:var(--c-main);color:#fff;}
.btn-main:hover{background:var(--c-main-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-main:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--c-main);border-color:var(--c-main);}
.btn-ghost:hover{background:var(--c-main-light);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-invert{background:#fff;color:var(--c-main-dark);}
.btn-invert:hover{background:var(--c-main-light);transform:translateY(-2px);}
.btn-invert:active{transform:translateY(0);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:9px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15.5px;font-weight:600;color:var(--c-main);
  border-bottom:1px solid transparent;padding-bottom:2px;
  transition:border-color .22s var(--ease),gap .22s var(--ease);
}
.btn-text:hover{border-color:var(--c-main);gap:10px;}
.btn-text span{transition:transform .22s var(--ease);}
.btn-text:hover span{transform:translateX(3px);}
.btn-main:disabled,.btn-ghost:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

.nav-burger{
  display:none;width:44px;height:44px;border:1px solid var(--bd-cool);border-radius:10px;
  background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.nav-burger:hover{border-color:var(--c-main);background:var(--c-alt2);}
.nav-burger span{display:block;width:18px;height:2px;background:var(--c-main);border-radius:2px;}

/* ---------- 徽章 ---------- */
.badge-pill{
  display:inline-flex;align-items:center;
  padding:6px 12px;border-radius:999px;
  background:var(--c-main-light);color:var(--c-main);
  font-size:12.5px;font-weight:500;letter-spacing:.04em;
}
.badge-terra{background:var(--c-terra-light);color:var(--c-terra);}
.badge-olive{background:#EDF1E8;color:var(--c-olive);}

/* ---------- 页面头区 ---------- */
.page-hero{
  position:relative;
  padding:64px 0 88px;
  background:
    radial-gradient(900px 380px at 88% -10%,rgba(31,78,95,.10),transparent 62%),
    linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 100%);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--bd-warm);
}
.crumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13.5px;color:var(--t-weak);margin-bottom:28px;
}
.crumb a{color:var(--c-main);font-weight:500;}
.crumb a:hover{border-bottom:1px solid var(--c-main);}
.crumb-current{color:var(--t-sub);}
.page-hero h1{
  font-size:48px;font-weight:700;line-height:1.25;letter-spacing:-.01em;
  color:var(--c-main-dark);margin-bottom:18px;
}
.hero-lead{
  font-size:18px;line-height:1.85;color:var(--t-sub);max-width:640px;margin-bottom:24px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:22px;}
.hero-figure{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  box-shadow:var(--sh-2);background:var(--c-main-light);
  aspect-ratio:9/6.4;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 18px;font-size:13.5px;color:#fff;
  background:linear-gradient(180deg,rgba(20,54,66,0),rgba(20,54,66,.82));
}

/* ---------- 主体：左索引 + 右长文 ---------- */
.content-section{padding:96px 0 40px;}
.anchor-nav{
  position:sticky;top:104px;
  background:#fff;border:1px solid var(--bd-warm);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:22px 18px;
}
.anchor-title{
  font-size:12.5px;font-weight:600;letter-spacing:.08em;color:var(--t-weak);
  text-transform:uppercase;margin-bottom:12px;padding-left:10px;
}
.anchor-list{display:flex;flex-direction:column;gap:2px;}
.anchor-list a{
  display:block;padding:10px 12px;border-radius:9px;
  font-size:15px;color:var(--t-sub);border-left:3px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.anchor-list a:hover{background:var(--c-alt2);color:var(--c-main);}
.anchor-list a.is-current{
  background:var(--c-main-light);color:var(--c-main);font-weight:600;
  border-left-color:var(--c-main);
}
.anchor-cta{
  display:block;margin-top:18px;padding-top:18px;border-top:1px solid var(--bd-warm);
  font-size:14.5px;font-weight:600;color:var(--c-terra);
}
.anchor-cta:hover{color:var(--c-main);}

.article-flow{display:flex;flex-direction:column;gap:0;}
.flow-block{padding-bottom:64px;margin-bottom:64px;border-bottom:1px solid var(--bd-warm);}
.flow-block:last-child{border-bottom:0;margin-bottom:0;padding-bottom:8px;}
.flow-head{display:flex;align-items:baseline;gap:14px;margin-bottom:22px;}
.flow-head h2{
  font-size:32px;font-weight:700;line-height:1.3;color:var(--c-main-dark);
  position:relative;padding-left:16px;
}
.flow-head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;
  border-radius:3px;background:var(--c-main);
}
.flow-index{
  font-family:var(--font-num);font-size:14px;font-weight:700;letter-spacing:.06em;
  color:var(--c-terra);
}
.flow-text p{font-size:16.5px;line-height:1.85;color:var(--t-sub);margin-bottom:16px;}
.flow-text p strong{color:var(--t-main);font-weight:600;}
.flow-text h3{
  font-size:22px;font-weight:600;line-height:1.4;color:var(--c-main-dark);
  margin:26px 0 12px;
}
.flow-figure{
  border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-1);
  background:var(--c-alt2);aspect-ratio:4/3;
}
.flow-figure img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
.flow-figure:hover img{transform:scale(1.04);}
.flow-figure figcaption{font-size:13px;color:var(--t-weak);margin-top:10px;line-height:1.6;}

.check-list{list-style:none;padding:0;margin:0 0 8px;}
.check-list li{
  position:relative;padding:10px 0 10px 28px;
  font-size:16px;line-height:1.75;color:var(--t-sub);border-bottom:1px dashed var(--bd-warm);
}
.check-list li:last-child{border-bottom:0;}
.check-list li::before{
  content:"";position:absolute;left:4px;top:20px;
  width:8px;height:8px;border-radius:50%;background:var(--c-terra);
}
.check-list li b{color:var(--t-main);font-weight:600;}

.quote-card{
  position:relative;margin:32px 0;
  padding:22px 24px 22px 28px;
  background:var(--c-alt);border-radius:0 var(--r-card) var(--r-card) 0;
  border-left:3px solid var(--c-terra);
}
.quote-card p{font-size:16.5px;line-height:1.8;color:var(--t-main);font-weight:500;}
.quote-card span{display:block;margin-top:8px;font-size:13.5px;color:var(--t-weak);}

/* ---------- 数据条 ---------- */
.stat-section{padding:24px 0 96px;}
.stat-card{
  height:100%;padding:26px 22px;background:#fff;
  border:1px solid var(--bd-warm);border-radius:var(--r-card);box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(31,78,95,.22);}
.stat-num{
  font-family:var(--font-num);font-size:44px;font-weight:700;line-height:1;
  color:var(--c-main);letter-spacing:-.02em;
}
.stat-num small{font-size:15px;font-weight:600;color:var(--t-weak);margin-left:6px;letter-spacing:0;}
.stat-label{font-size:15.5px;font-weight:600;color:var(--t-main);margin:14px 0 6px;}
.stat-desc{font-size:13.5px;line-height:1.65;color:var(--t-weak);margin-bottom:16px;}
.stat-bar{height:6px;border-radius:999px;background:var(--c-main-light);overflow:hidden;}
.stat-bar i{display:block;height:100%;border-radius:999px;background:var(--c-main);}
.stat-bar i.terra{background:var(--c-terra);}
.stat-bar i.olive{background:var(--c-olive);}

/* ---------- FAQ ---------- */
.faq-section{padding:0 0 96px;}
.faq-intro h2{font-size:32px;font-weight:700;color:var(--c-main-dark);line-height:1.3;margin-bottom:14px;}
.faq-intro p{font-size:16px;color:var(--t-sub);line-height:1.8;margin-bottom:20px;}
.faq-item{
  position:relative;background:#fff;border:1px solid var(--bd-warm);border-radius:var(--r-card);
  box-shadow:var(--sh-1);margin-bottom:14px;overflow:hidden;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  background:var(--c-main);border-radius:0 3px 3px 0;
}
.faq-item .accordion-button{
  background:transparent;border:0;box-shadow:none;
  padding:20px 24px 20px 28px;font-size:17px;font-weight:600;color:var(--t-main);
  display:flex;align-items:center;gap:14px;
}
.faq-item .accordion-button:not(.collapsed){color:var(--c-main);}
.faq-item .accordion-button:focus{box-shadow:none;outline:2px solid var(--c-main);outline-offset:-4px;}
.faq-item .accordion-button::after{
  content:"+";background-image:none;width:auto;height:auto;
  font-size:22px;font-weight:400;line-height:1;color:var(--c-terra);
  margin-left:auto;display:flex;align-items:center;justify-content:center;
  transition:transform .22s var(--ease);
}
.faq-item .accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.faq-item .accordion-body{
  padding:0 28px 22px 28px;font-size:16px;line-height:1.85;color:var(--t-sub);
}

/* ---------- CTA ---------- */
.cta-section{padding:0 0 96px;}
.cta-band{
  position:relative;border-radius:20px;overflow:hidden;
  background:linear-gradient(115deg,var(--c-main-dark) 0%,var(--c-main) 62%,#26606f 100%);
  color:#fff;padding:56px 48px;box-shadow:var(--sh-2);
}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(196,85,59,.35),transparent 68%);
}
.cta-band h2{font-size:34px;font-weight:700;line-height:1.3;margin-bottom:14px;color:#fff;}
.cta-band p{font-size:16.5px;line-height:1.8;color:rgba(255,255,255,.86);margin-bottom:26px;}
.cta-points{list-style:none;padding:0;margin:0 0 28px;}
.cta-points li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:15px;color:rgba(255,255,255,.88);margin-bottom:10px;
}
.cta-points i{color:#8FB7C2;margin-top:5px;font-size:12px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:18px;align-items:center;}
.cta-note{font-size:13.5px;color:rgba(255,255,255,.7);}

.form-card{
  position:relative;background:#fff;border-radius:var(--r-card);
  padding:30px 28px;box-shadow:var(--sh-3);border:1px solid var(--bd-cool);
}
.form-card h3{font-size:20px;font-weight:700;color:var(--c-main-dark);margin-bottom:6px;}
.form-card > p{font-size:13.5px;color:var(--t-weak);margin-bottom:20px;}
.form-field{margin-bottom:16px;}
.form-field label{
  display:block;font-size:14px;font-weight:600;color:var(--t-main);margin-bottom:8px;
}
.form-field label .req{color:var(--c-terra);margin-left:4px;}
.form-control,.form-select{
  height:48px;border-radius:var(--r-btn);border:1px solid var(--bd-cool);
  padding:0 14px;font-size:15px;color:var(--t-main);background:#fff;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
textarea.form-control{height:auto;min-height:104px;padding:12px 14px;line-height:1.7;resize:vertical;}
.form-control::placeholder{color:var(--t-weak);}
.form-control:focus,.form-select:focus{
  border-color:var(--c-main);box-shadow:0 0 0 3px rgba(31,78,95,.14);outline:none;
}
.form-check-input{width:18px;height:18px;margin-top:4px;border-color:var(--bd-cool);}
.form-check-input:checked{background-color:var(--c-main);border-color:var(--c-main);}
.form-check-input:focus{box-shadow:0 0 0 3px rgba(31,78,95,.16);border-color:var(--c-main);}
.form-check-label{font-size:13.5px;color:var(--t-sub);line-height:1.7;}
.form-privacy{font-size:12.5px;color:var(--t-weak);margin-top:12px;line-height:1.65;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-main-dark);color:rgba(255,255,255,.82);padding:72px 0 28px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.site-footer .brand-name{color:#fff;}
.site-footer .brand-sub{color:rgba(255,255,255,.6);}
.site-footer .brand-mark{background:linear-gradient(140deg,#2A6577 0%,#1B4A57 100%);}
.footer-desc{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.68);max-width:360px;}
.site-footer h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.site-footer a{
  display:block;font-size:14.5px;color:rgba(255,255,255,.72);
  padding:6px 0;transition:color .22s var(--ease);
}
.site-footer a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-contact{list-style:none;padding:0;margin:0;}
.footer-contact li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:rgba(255,255,255,.72);margin-bottom:12px;line-height:1.7;
}
.footer-contact i{color:#8FB7C2;margin-top:5px;font-size:13px;}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 移动端抽屉 ---------- */
.mobile-nav{width:min(360px,90vw);background:var(--c-bg);}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--bd-warm);padding:18px 20px;}
.mobile-nav .offcanvas-body{padding:16px 20px 28px;}
.m-nav-link{
  display:flex;align-items:center;min-height:48px;padding:0 12px;
  border-radius:10px;font-size:15.5px;color:var(--t-sub);
  transition:background .22s var(--ease),color .22s var(--ease);
}
.m-nav-link:hover{background:#fff;color:var(--c-main);}
.m-nav-link.is-active{background:var(--c-main-light);color:var(--c-main);font-weight:600;}
.m-nav-group{margin-top:14px;padding-top:14px;border-top:1px solid var(--bd-warm);}
.m-nav-group .mega-col-title{padding-left:12px;}
.m-nav-cta{margin-top:20px;}

/* ---------- 响应式 ---------- */
@media (max-width:1399.98px){
  .page-hero h1{font-size:44px;}
}
@media (max-width:1199.98px){
  .nav-desktop{gap:2px;}
  .nav-item,.mega-toggle{padding:10px 10px;font-size:15px;}
  .page-hero{padding:52px 0 72px;}
  .content-section{padding:80px 0 32px;}
  .stat-section{padding:16px 0 80px;}
  .faq-section,.cta-section{padding-bottom:80px;}
}
@media (max-width:991.98px){
  .nav-desktop{display:none;}
  .nav-burger{display:flex;}
  .nav-right .btn-main{display:none;}
  .nav-inner{min-height:68px;}
  .page-hero h1{font-size:38px;}
  .anchor-nav{position:static;margin-bottom:32px;}
  .anchor-list{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .anchor-list a{border-left:0;border-bottom:2px solid transparent;padding:8px 12px;font-size:14px;}
  .anchor-list a.is-current{border-left:0;border-bottom-color:var(--c-main);}
  .anchor-title{padding-left:0;}
  .flow-head h2{font-size:28px;}
  .cta-band{padding:44px 32px;}
  .cta-band h2{font-size:28px;}
  .faq-intro{margin-bottom:28px;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  body .container{padding-left:18px;padding-right:18px;}
  .brand-sub{display:none;}
  .page-hero{padding:36px 0 56px;}
  .page-hero h1{font-size:31px;}
  .hero-lead{font-size:16.5px;}
  .hero-actions{flex-direction:column;align-items:stretch;gap:14px;}
  .hero-actions .btn-main{width:100%;}
  .hero-actions .btn-text{justify-content:center;}
  .content-section{padding:56px 0 24px;}
  .flow-block{padding-bottom:44px;margin-bottom:44px;}
  .flow-head h2{font-size:25px;}
  .flow-text h3{font-size:20px;}
  .stat-section{padding:8px 0 56px;}
  .stat-card{box-shadow:var(--sh-1);padding:22px 18px;}
  .stat-num{font-size:38px;}
  .faq-section,.cta-section{padding-bottom:56px;}
  .faq-intro h2{font-size:25px;}
  .faq-item .accordion-button{font-size:16px;padding:16px 18px 16px 22px;}
  .faq-item .accordion-body{padding:0 22px 18px 22px;font-size:15.5px;}
  .cta-band{padding:34px 22px;border-radius:16px;}
  .cta-band h2{font-size:24px;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn-main,.cta-actions .btn-invert{width:100%;}
  .form-card{padding:24px 20px;}
  .site-footer{padding:52px 0 24px;}
  .footer-desc{max-width:none;}
}
@media (max-width:575.98px){
  .page-hero h1{font-size:28px;}
  .flow-head h2{font-size:23px;}
  .stat-num{font-size:34px;}
  .brand-name{font-size:15.5px;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}