/* roulang page: index */
:root{
  --c-primary:#17514A;
  --c-primary-deep:#0F3B36;
  --c-primary-soft:#2E7A6E;
  --c-primary-tint:#E7F0EC;
  --c-accent:#C4693B;
  --c-bg:#F6F3EC;
  --c-bg-alt:#EDE9E0;
  --c-surface:#FFFFFF;
  --c-text:#1A1D1C;
  --c-text-2:#5A625F;
  --c-text-3:#8C938F;
  --c-line:#E2DCD1;
  --sh-1:0 1px 2px rgba(26,29,28,.04);
  --sh-2:0 8px 24px rgba(26,29,28,.06);
  --sh-3:0 14px 34px rgba(15,59,54,.12);
  --r-card:14px;
  --r-btn:10px;
  --r-input:8px;
  --r-img:14px;
  --pad-y:96px;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button,input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--pad-y) 0;}
.section-alt{background:var(--c-bg-alt);}
.section-dark{background:var(--c-primary-deep);color:#fff;}
.serif{font-family:var(--font-serif);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease,background-color .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);background:rgba(255,255,255,.98);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;min-width:0;}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border:1.5px solid var(--c-primary);
  border-radius:8px;display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-size:15px;color:var(--c-primary);
  transition:background-color .22s ease,color .22s ease,border-color .22s ease;
}
.brand:hover .brand-mark{background:var(--c-accent);border-color:var(--c-accent);color:#fff;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--c-text);}
.brand-text span{font-size:11.5px;color:var(--c-text-3);letter-spacing:.08em;}
.nav-main{display:flex;align-items:center;gap:4px;}
.nav-main a{
  position:relative;display:block;padding:8px 14px;
  font-size:15.5px;font-weight:500;color:var(--c-text-2);line-height:1.4;
}
.nav-main a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left center;
  transition:transform .2s ease;
}
.nav-main a:hover{color:var(--c-text);}
.nav-main a:hover::after{transform:scaleX(1);}
.nav-main a.is-active{color:var(--c-text);font-weight:600;}
.nav-main a.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 24px;border-radius:var(--r-btn);
  background:var(--c-primary);color:#fff;font-size:15.5px;font-weight:600;
  border:1px solid var(--c-primary);cursor:pointer;
  transition:background-color .22s ease,transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.btn-main:hover{background:var(--c-primary-deep);border-color:var(--c-primary-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-3);}
.btn-main:active{transform:translateY(0);}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 24px;border-radius:var(--r-btn);
  background:transparent;color:var(--c-primary);font-size:15.5px;font-weight:600;
  border:1px solid var(--c-primary);cursor:pointer;
  transition:background-color .22s ease,transform .22s ease,color .22s ease;
}
.btn-outline:hover{background:var(--c-primary-tint);color:var(--c-primary-deep);transform:translateY(-2px);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:6px;padding:11px 4px;min-height:44px;
  font-size:15.5px;font-weight:600;color:var(--c-primary);cursor:pointer;
  background:none;border:0;
}
.btn-ghost svg{transition:transform .2s ease;}
.btn-ghost:hover{color:var(--c-primary-soft);}
.btn-ghost:hover svg{transform:translateX(4px);}
.btn-main-on-dark{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:11px 24px;border-radius:var(--r-btn);
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.7);
  font-size:15.5px;font-weight:600;
  transition:background-color .22s ease,color .22s ease,transform .22s ease;
}
.btn-main-on-dark:hover{background:#fff;color:var(--c-primary-deep);transform:translateY(-2px);}
.nav-toggle{
  width:44px;height:44px;display:none;align-items:center;justify-content:center;
  background:none;border:0;cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--c-text);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:22px;height:2px;background:var(--c-text);border-radius:2px;
}
.nav-toggle span::before{top:-7px;}
.nav-toggle span::after{top:7px;}
.offcanvas{background:var(--c-surface);}
.offcanvas-header{border-bottom:1px solid var(--c-line);padding:16px 20px;}
.offcanvas-title{font-size:16px;font-weight:700;}
.offcanvas-body{padding:0;display:flex;flex-direction:column;height:100%;}
.m-nav a{
  display:block;padding:16px 20px;font-size:18px;line-height:1.4;
  color:var(--c-text);border-bottom:1px solid var(--c-line);
}
.m-nav a.is-active{color:var(--c-primary);font-weight:600;}
.m-nav a:active{background:var(--c-primary-tint);}
.m-nav-group{padding:16px 20px 0;font-size:13px;letter-spacing:.1em;color:var(--c-text-3);}
.m-foot{margin-top:auto;padding:20px;border-top:1px solid var(--c-line);}
.m-foot p{font-size:14px;color:var(--c-text-2);margin-bottom:12px;}

/* ---------- 通用板块头 ---------- */
.section-head{max-width:760px;margin-bottom:48px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;font-weight:600;letter-spacing:.14em;color:var(--c-primary-soft);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:8px;height:8px;background:var(--c-accent);display:inline-block;}
.section-title{
  font-family:var(--font-serif);
  font-size:34px;line-height:1.3;font-weight:700;letter-spacing:.01em;
  position:relative;padding-left:16px;
}
.section-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;background:var(--c-primary);border-radius:2px;
}
.section-head.center .section-title{padding-left:0;}
.section-head.center .section-title::before{display:none;}
.section-desc{margin-top:16px;font-size:16px;color:var(--c-text-2);max-width:720px;line-height:1.9;}
.section-dark .section-title{color:#fff;}
.section-dark .section-title::before{background:var(--c-accent);}
.section-dark .section-desc{color:rgba(255,255,255,.72);}
.section-dark .eyebrow{color:rgba(255,255,255,.72);}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:88px 0 80px;
  background:var(--c-bg);
}
.hero::after{
  content:"";position:absolute;right:-120px;bottom:-140px;width:420px;height:420px;
  border:1px solid var(--c-line);border-radius:50%;pointer-events:none;
}
.hero::before{
  content:"";position:absolute;right:60px;bottom:-40px;width:220px;height:220px;
  border:1px solid var(--c-line);border-radius:50%;pointer-events:none;
}
.hero-inner{position:relative;z-index:2;}
.hero-seal{
  width:24px;height:24px;background:var(--c-accent);border-radius:4px;color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-size:14px;margin-bottom:18px;
}
.hero h1{
  font-family:var(--font-serif);
  font-size:50px;line-height:1.28;font-weight:700;letter-spacing:.01em;
  max-width:11em;
}
.hero-sub{margin-top:20px;font-size:18px;line-height:1.85;color:var(--c-text-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:32px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:0;margin-top:44px;padding-top:28px;
  border-top:1px solid var(--c-line);
}
.hero-stats li{
  padding:0 28px;border-left:1px solid var(--c-line);
}
.hero-stats li:first-child{padding-left:0;border-left:0;}
.hero-stats .num{
  display:block;font-family:var(--font-serif);font-size:28px;font-weight:700;color:var(--c-primary);line-height:1.2;
}
.hero-stats .lbl{display:block;font-size:13.5px;color:var(--c-text-3);margin-top:4px;}
.hero-figure{
  position:relative;border-radius:18px;overflow:hidden;box-shadow:var(--sh-2);
  aspect-ratio:4/3;background:var(--c-bg-alt);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure-cap{
  position:absolute;left:16px;bottom:16px;background:rgba(255,255,255,.94);
  border-radius:10px;padding:10px 16px;font-size:13.5px;color:var(--c-text-2);
}

/* ---------- 服务 ---------- */
.sticky-col{position:sticky;top:104px;}
.service-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.service-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
  transition:box-shadow .24s ease,transform .24s ease,border-color .24s ease;
}
.service-card:nth-child(even){margin-top:32px;}
.service-card:hover{box-shadow:var(--sh-3);transform:translateY(-4px);border-color:var(--c-primary-tint);}
.service-icon{
  width:48px;height:48px;border-radius:12px;background:var(--c-primary-tint);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.service-icon svg{stroke:var(--c-primary);transition:stroke .24s ease;}
.service-card:hover .service-icon svg{stroke:var(--c-accent);}
.service-card h3{font-size:20px;font-weight:600;line-height:1.5;margin-bottom:10px;}
.service-card p{font-size:15px;color:var(--c-text-2);line-height:1.85;margin-bottom:18px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;
  color:var(--c-primary);min-height:32px;
}
.link-arrow svg{transition:transform .2s ease;}
.link-arrow:hover{color:var(--c-primary-soft);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ---------- 数据 ---------- */
.metric-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
}
.metric{
  padding:8px 28px;border-left:1px solid rgba(255,255,255,.16);
}
.metric:first-child{border-left:0;padding-left:0;}
.metric .num{
  font-family:var(--font-serif);font-size:44px;font-weight:700;line-height:1.15;color:#fff;
  display:flex;align-items:baseline;gap:2px;
}
.metric .num em{font-style:normal;font-size:20px;color:var(--c-accent);}
.metric .lbl{margin-top:10px;font-size:14px;color:rgba(255,255,255,.7);line-height:1.7;}

/* ---------- 案例 ---------- */
.case-main{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);height:100%;
  transition:box-shadow .24s ease,transform .24s ease;
}
.case-main:hover{box-shadow:var(--sh-3);transform:translateY(-4px);}
.case-figure{aspect-ratio:16/10;overflow:hidden;background:var(--c-bg-alt);}
.case-figure img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.case-main:hover .case-figure img,.case-small:hover .case-figure img{transform:scale(1.03);}
.case-body{padding:24px 26px 26px;}
.case-body h3{font-size:20px;font-weight:600;line-height:1.5;margin:12px 0 10px;}
.case-body p{font-size:15px;color:var(--c-text-2);line-height:1.85;}
.case-meta{margin-top:14px;font-size:13.5px;color:var(--c-text-3);display:flex;gap:14px;flex-wrap:wrap;}
.case-small{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:box-shadow .24s ease,transform .24s ease;
}
.case-small:hover{box-shadow:var(--sh-3);transform:translateY(-4px);}
.case-small .case-figure{aspect-ratio:4/3;}
.case-small .case-body{padding:20px 22px 22px;}
.case-small h3{font-size:17px;font-weight:600;line-height:1.5;margin:10px 0 8px;}
.case-small p{font-size:14.5px;color:var(--c-text-2);line-height:1.8;}
.badge-soft{
  display:inline-block;padding:4px 10px;border-radius:999px;
  background:var(--c-primary-tint);color:var(--c-primary);
  font-size:13px;font-weight:600;line-height:1.6;
}
.badge-line{
  display:inline-block;padding:4px 10px;border-radius:999px;
  background:var(--c-bg-alt);color:var(--c-text-2);font-size:13px;font-weight:600;
}

/* ---------- 方案 tabs ---------- */
.plan-tabs{display:flex;flex-direction:column;gap:10px;}
.plan-tab{
  display:block;width:100%;text-align:left;background:transparent;
  border:1px solid var(--c-line);border-radius:12px;padding:18px 20px;cursor:pointer;
  transition:background-color .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.plan-tab strong{display:block;font-size:16.5px;font-weight:600;color:var(--c-text);line-height:1.5;}
.plan-tab span{display:block;margin-top:6px;font-size:13.5px;color:var(--c-text-3);line-height:1.7;}
.plan-tab:hover{background:var(--c-primary-tint);border-color:var(--c-primary-tint);}
.plan-tab.is-active{background:var(--c-primary-tint);border-color:var(--c-primary);box-shadow:var(--sh-1);}
.plan-tab.is-active strong{color:var(--c-primary-deep);}
.plan-panel{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);}
.plan-panel img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);margin-bottom:22px;}
.plan-panel h3{font-size:22px;font-weight:600;line-height:1.5;margin-bottom:12px;}
.plan-panel p{font-size:15.5px;color:var(--c-text-2);line-height:1.9;margin-bottom:20px;}
.check-list li{
  position:relative;padding-left:22px;font-size:15px;color:var(--c-text);line-height:1.95;margin-bottom:8px;
}
.check-list li::before{
  content:"";position:absolute;left:2px;top:12px;width:8px;height:8px;background:var(--c-accent);border-radius:2px;
}

/* ---------- 最新信息 ---------- */
.news-feature{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);height:100%;
  transition:box-shadow .24s ease,transform .24s ease;
}
.news-feature:hover{box-shadow:var(--sh-3);transform:translateY(-4px);}
.news-figure{aspect-ratio:16/9;overflow:hidden;background:var(--c-bg-alt);}
.news-figure img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.news-feature:hover .news-figure img{transform:scale(1.03);}
.news-feature .news-body{padding:22px 24px 24px;}
.news-feature h3{
  font-size:19px;font-weight:600;line-height:1.55;margin:12px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-feature p{
  font-size:14.5px;color:var(--c-text-2);line-height:1.85;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-list{display:flex;flex-direction:column;}
.news-list li{border-bottom:1px solid var(--c-line);}
.news-list li:first-child{padding-top:0;}
.news-list a{display:block;padding:20px 0;transition:background-color .2s ease;}
.news-list a:hover h3{color:var(--c-primary-soft);}
.news-list h3{
  font-size:17px;font-weight:600;line-height:1.6;margin:10px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-list p{
  font-size:14.5px;color:var(--c-text-2);line-height:1.85;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-list .meta,.news-feature .meta{display:block;margin-top:10px;font-size:13.5px;color:var(--c-text-3);}
.empty-state{
  text-align:center;padding:64px 24px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);
}
.empty-state svg{stroke:var(--c-primary-soft);margin-bottom:16px;}
.empty-state p{font-size:16px;color:var(--c-text-2);margin-bottom:16px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto;}
.accordion-item{border:0;border-bottom:1px solid var(--c-line);background:transparent;}
.accordion-button{
  background:transparent;box-shadow:none;padding:24px 44px 24px 44px;
  font-size:17px;font-weight:600;color:var(--c-text);line-height:1.6;position:relative;
}
.accordion-button:not(.collapsed){color:var(--c-primary);background:transparent;box-shadow:none;}
.accordion-button:focus{box-shadow:none;border:0;}
.accordion-button::after{
  display:none;
}
.faq-index{
  position:absolute;left:0;top:24px;font-family:var(--font-serif);
  font-size:15px;font-weight:700;color:var(--c-accent);
}
.faq-sign{
  position:absolute;right:8px;top:50%;transform:translateY(-50%);
  width:20px;height:20px;display:flex;align-items:center;justify-content:center;
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:var(--c-primary);transition:transform .24s ease,opacity .24s ease;
}
.faq-sign::before{width:14px;height:1.5px;}
.faq-sign::after{width:1.5px;height:14px;}
.accordion-button:not(.collapsed) .faq-sign::after{transform:rotate(90deg);opacity:0;}
.accordion-body{
  padding:0 44px 26px 44px;font-size:15px;line-height:1.9;color:var(--c-text-2);
}

/* ---------- 联系 ---------- */
.contact-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);height:100%;
}
.form-label{display:block;font-size:14px;font-weight:500;color:var(--c-text);margin-bottom:8px;}
.form-label .req{color:var(--c-accent);margin-left:2px;}
.form-control,.form-select{
  width:100%;min-height:48px;padding:11px 14px;border-radius:var(--r-input);
  border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-text);
  font-size:15.5px;line-height:1.6;transition:border-color .2s ease,background-color .2s ease;
}
textarea.form-control{min-height:118px;resize:vertical;padding-top:12px;}
.form-control::placeholder{color:var(--c-text-3);}
.form-control:focus,.form-select:focus{
  outline:none;border:2px solid var(--c-primary);background:var(--c-primary-tint);
}
.form-hint{font-size:13.5px;color:var(--c-text-3);margin-top:8px;}
.form-check{display:flex;align-items:flex-start;gap:10px;margin-top:16px;}
.form-check input{width:18px;height:18px;margin-top:5px;flex:0 0 18px;accent-color:var(--c-primary);}
.form-check label{font-size:14px;color:var(--c-text-2);line-height:1.75;}
.info-list li{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--c-line);}
.info-list li:last-child{border-bottom:0;}
.info-list svg{flex:0 0 20px;stroke:var(--c-primary);margin-top:5px;}
.info-list strong{display:block;font-size:15px;font-weight:600;color:var(--c-text);}
.info-list span{display:block;font-size:14.5px;color:var(--c-text-2);line-height:1.75;margin-top:2px;}

/* ---------- CTA 横条 ---------- */
.cta-bar{background:var(--c-primary-deep);padding:56px 0;color:#fff;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;}
.cta-inner h2{font-family:var(--font-serif);font-size:26px;font-weight:700;line-height:1.45;}
.cta-inner p{font-size:15px;color:rgba(255,255,255,.72);margin-top:8px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-deep);color:rgba(255,255,255,.78);padding-top:72px;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:0;
  border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:48px;
}
.footer-col{padding:0 28px;border-left:1px solid rgba(255,255,255,.12);}
.footer-col:first-child{padding-left:0;border-left:0;}
.footer-col:last-child{padding-right:0;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{border-color:rgba(255,255,255,.6);color:#fff;background:transparent;}
.footer-brand strong{color:#fff;font-size:17px;font-weight:700;}
.footer-col p{font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.68);}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14.5px;color:rgba(255,255,255,.7);display:inline-flex;align-items:center;gap:4px;transition:color .2s ease,transform .2s ease;}
.footer-links a:hover{color:var(--c-accent);transform:translateX(4px);}
.footer-info li{display:flex;gap:10px;margin-bottom:12px;font-size:14.5px;color:rgba(255,255,255,.72);line-height:1.75;}
.footer-info svg{flex:0 0 18px;stroke:var(--c-accent);margin-top:5px;}
.footer-bottom{
  padding:22px 0 28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.55);}
.footer-bottom a:hover{color:var(--c-accent);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .hero h1{font-size:44px;}
  .metric .num{font-size:38px;}
}
@media (max-width:991.98px){
  :root{--pad-y:72px;}
  .nav-main{display:none;}
  .nav-actions .btn-main{display:none;}
  .nav-toggle{display:flex;}
  .nav-inner{height:60px;}
  .sticky-col{position:static;margin-bottom:32px;}
  .hero{padding:64px 0 56px;}
  .hero h1{font-size:38px;max-width:none;}
  .hero-sub{font-size:17px;}
  .section-title{font-size:28px;}
  .metric-grid{grid-template-columns:repeat(2,1fr);gap:32px 0;}
  .metric{border-left:0;padding:0;}
  .metric:nth-child(even){border-left:1px solid rgba(255,255,255,.16);padding-left:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px 0;}
  .footer-col:nth-child(3){padding-left:0;border-left:0;}
}
@media (max-width:767.98px){
  :root{--pad-y:56px;}
  body{font-size:16px;line-height:1.85;}
  .container{padding:0 20px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:16px;}
  .hero-stats{flex-direction:column;gap:20px;}
  .hero-stats li{padding:0;border-left:0;}
  .hero-stats .num{font-size:24px;}
  .section-title{font-size:24px;padding-left:12px;}
  .service-grid{grid-template-columns:1fr;}
  .service-card:nth-child(even){margin-top:0;}
  .service-card{padding:22px;}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .metric:nth-child(even){padding-left:20px;}
  .metric .num{font-size:30px;}
  .accordion-button{padding:20px 36px 20px 36px;font-size:16px;}
  .accordion-body{padding:0 36px 22px 36px;}
  .plan-panel{padding:22px;}
  .cta-inner h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;gap:36px;}
  .footer-col{padding:0;border-left:0;border-top:1px solid rgba(255,255,255,.12);padding-top:28px;}
  .footer-col:first-child{border-top:0;padding-top:0;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#17514A;
  --c-primary-deep:#0F3B36;
  --c-primary-soft:#2E7A6E;
  --c-primary-tint:#E7F0EC;
  --c-accent:#C4693B;
  --c-bg:#F6F3EC;
  --c-bg-alt:#EDE9E0;
  --c-surface:#FFFFFF;
  --c-text:#1A1D1C;
  --c-text-2:#5A625F;
  --c-text-3:#8C938F;
  --c-line:#E2DCD1;
  --sh-1:0 1px 2px rgba(26,29,28,.04);
  --sh-2:0 8px 24px rgba(26,29,28,.06);
  --sh-3:0 14px 34px rgba(15,59,54,.12);
  --r-card:14px;
  --r-btn:10px;
  --r-input:8px;
  --r-img:14px;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-soft);}
h1,h2,h3,h4{margin:0;color:var(--c-text);line-height:1.33;}
h1,h2{font-family:var(--font-serif);letter-spacing:.01em;}
h3,h4{font-family:var(--font-sans);}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.serif{font-family:var(--font-serif);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease,background-color .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);background:rgba(255,255,255,.98);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.logo{display:flex;align-items:center;gap:10px;color:var(--c-text);}
.logo:hover{color:var(--c-text);}
.logo-mark{
  width:36px;height:36px;border-radius:9px;
  border:1.5px solid var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-size:18px;color:var(--c-primary);
  transition:background-color .22s ease,color .22s ease,border-color .22s ease;
}
.logo:hover .logo-mark{background:var(--c-accent);border-color:var(--c-accent);color:#fff;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text b{font-size:17px;font-weight:700;letter-spacing:.01em;}
.logo-text span{font-size:11px;color:var(--c-text-3);letter-spacing:.16em;text-transform:uppercase;}
.nav-main{display:flex;align-items:center;gap:30px;}
.nav-main a{
  position:relative;font-size:15.5px;font-weight:500;color:var(--c-text-2);
  padding:6px 0;white-space:nowrap;
}
.nav-main a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-main a:hover{color:var(--c-text);}
.nav-main a:hover::after{transform:scaleX(1);}
.nav-main a.is-active{color:var(--c-primary);font-weight:600;}
.nav-main a.is-active::after{transform:scaleX(1);}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:999px;
  background:var(--c-primary);color:#fff;font-size:15px;font-weight:500;
  border:1px solid var(--c-primary);white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease;
}
.btn-main:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-3);}
.btn-main:active{transform:translateY(0);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  border:1px solid var(--c-primary);color:var(--c-primary);background:transparent;
  font-size:15px;font-weight:500;
  transition:background-color .22s ease,color .22s ease,transform .22s ease;
}
.btn-ghost:hover{background:var(--c-primary-tint);color:var(--c-primary);transform:translateY(-2px);}
.btn-line{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:500;color:var(--c-primary);
}
.btn-line svg{transition:transform .22s ease;}
.btn-line:hover svg{transform:translateX(4px);}
.burger{
  display:none;width:44px;height:44px;border:none;background:transparent;
  padding:10px;cursor:pointer;
}
.burger span{display:block;height:1.5px;background:var(--c-text);border-radius:2px;}
.burger span + span{margin-top:6px;}
.burger span:last-child{width:70%;}

/* ---------- 抽屉导航 ---------- */
.offcanvas{width:86%;max-width:320px;background:var(--c-surface);}
.oc-head{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--c-line);}
.oc-close{width:44px;height:44px;border:none;background:transparent;font-size:22px;color:var(--c-text-2);line-height:1;cursor:pointer;}
.oc-nav{padding:8px 0;}
.oc-nav a{
  display:block;padding:14px 22px;font-size:17px;color:var(--c-text);
  border-bottom:1px solid var(--c-line);
}
.oc-nav a.is-active{color:var(--c-primary);font-weight:600;}
.oc-foot{padding:22px;border-top:1px solid var(--c-line);margin-top:auto;}
.oc-foot .btn-main{width:100%;height:48px;}
.oc-foot p{margin:16px 0 0;font-size:14px;color:var(--c-text-2);}

/* ---------- 通用区块 ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--c-bg-alt);}
.sec-head{max-width:760px;margin-bottom:48px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-title{position:relative;font-size:34px;padding-left:16px;}
.sec-title::before{
  content:"";position:absolute;left:0;top:.18em;width:4px;height:.86em;
  background:var(--c-primary);border-radius:2px;
}
.sec-head.center .sec-title{padding-left:0;}
.sec-head.center .sec-title::before{display:none;}
.sec-sub{margin-top:16px;color:var(--c-text-2);font-size:16.5px;max-width:700px;}
.sec-head.center .sec-sub{margin-left:auto;margin-right:auto;}
.divider-dot{display:flex;align-items:center;gap:10px;margin:24px 0;}
.divider-dot::before,.divider-dot::after{content:"";height:1px;background:var(--c-line);flex:1;}
.divider-dot i{width:8px;height:8px;background:var(--c-accent);border-radius:1px;}
.badge-soft{
  display:inline-block;padding:4px 12px;border-radius:999px;
  background:var(--c-primary-tint);color:var(--c-primary-soft);
  font-size:14px;line-height:1.7;
}
.seal{width:24px;height:24px;background:var(--c-accent);border-radius:3px;}

/* ---------- 分类 Hero ---------- */
.cat-hero{background:var(--c-bg);padding:56px 0 0;}
.crumb{font-size:14px;color:var(--c-text-2);display:flex;gap:8px;flex-wrap:wrap;align-items:center;}
.crumb a{color:var(--c-text-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb span.sep{color:var(--c-text-3);}
.crumb .now{color:var(--c-primary);}
.hero-figure{margin-top:28px;border-radius:16px;overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:16/6;position:relative;}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-body{padding:44px 0 0;max-width:860px;}
.hero-body h1{font-size:44px;line-height:1.28;}
.hero-lead{margin-top:22px;font-size:17px;color:var(--c-text-2);max-width:760px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;align-items:center;}

/* ---------- 交错图文 ---------- */
.zig-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:56px 0;}
.zig-row + .zig-row{border-top:1px solid var(--c-line);}
.zig-row .zig-fig{border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-1);aspect-ratio:4/3;}
.zig-row .zig-fig img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.zig-row:hover .zig-fig img{transform:scale(1.03);}
.zig-row h2{font-size:30px;}
.zig-row p{color:var(--c-text-2);margin-top:16px;font-size:16.5px;}
.check-list{margin-top:22px;display:grid;gap:12px;}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:16px;color:var(--c-text);}
.check-list svg{flex:none;margin-top:5px;color:var(--c-accent);}
.zig-rev .zig-fig{order:2;}
.zig-rev .zig-txt{order:1;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.accordion-item{border:none;border-bottom:1px solid var(--c-line);background:transparent;}
.accordion-button{
  background:transparent;box-shadow:none;padding:22px 44px 22px 46px;
  font-size:17px;font-weight:600;color:var(--c-text);position:relative;
}
.accordion-button::before{
  content:attr(data-no);
  position:absolute;left:0;top:22px;
  font-family:var(--font-serif);font-size:16px;color:var(--c-accent);
}
.accordion-button::after{
  content:"";position:absolute;right:6px;top:50%;width:14px;height:14px;
  transform:translateY(-50%);background:none;
  border-right:1.5px solid var(--c-text-2);border-bottom:1.5px solid var(--c-text-2);
  transition:transform .25s ease,border-color .25s ease;margin:0;
}
.accordion-button:not(.collapsed){color:var(--c-primary);background:transparent;box-shadow:none;}
.accordion-button:not(.collapsed)::after{transform:translateY(-70%) rotate(225deg);border-color:var(--c-primary);}
.accordion-button:focus{box-shadow:none;border-color:transparent;}
.accordion-body{padding:0 44px 26px 46px;font-size:15.5px;color:var(--c-text-2);}

/* ---------- 关联分类卡 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.rel-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:var(--c-primary-tint);color:inherit;}
.rel-card h3{font-size:20px;margin-bottom:10px;}
.rel-card p{font-size:15.5px;color:var(--c-text-2);margin-bottom:14px;}

/* ---------- CTA 横条 ---------- */
.cta-bar{background:var(--c-primary-deep);padding:52px 0;}
.cta-bar .inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-bar h2{color:#fff;font-size:28px;}
.cta-bar p{color:rgba(255,255,255,.72);margin:10px 0 0;font-size:16px;}
.btn-outline-light2{
  display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 24px;
  border:1px solid rgba(255,255,255,.7);border-radius:var(--r-btn);color:#fff;
  font-size:15px;background:transparent;transition:background-color .22s ease,transform .22s ease;
}
.btn-outline-light2:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-2px);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-deep);color:rgba(255,255,255,.72);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}
.footer-col + .footer-col{border-left:1px solid rgba(255,255,255,.12);padding-left:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-mark{
  width:32px;height:32px;border-radius:8px;border:1.5px solid rgba(255,255,255,.6);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;
}
.footer-brand strong{color:#fff;font-size:17px;}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:18px;font-weight:600;}
.footer-col p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.68);}
.footer-links li + li{margin-top:12px;}
.footer-links a{color:rgba(255,255,255,.72);font-size:15px;transition:color .2s ease,transform .2s ease;display:inline-block;}
.footer-links a:hover{color:var(--c-accent);transform:translateX(4px);}
.footer-info li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.72);}
.footer-info li + li{margin-top:14px;}
.footer-info svg{flex:none;margin-top:5px;stroke:var(--c-accent);}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.6);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .sec-title{font-size:30px;}
  .hero-body h1{font-size:38px;}
}
@media (max-width:991px){
  .nav-main{display:none;}
  .header-cta{display:none;}
  .burger{display:block;}
  .section{padding:72px 0;}
  .zig-row{gap:36px;padding:44px 0;}
  .zig-row h2{font-size:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-col + .footer-col{border-left:none;padding-left:0;}
  .footer-col:nth-child(even){border-left:1px solid rgba(255,255,255,.12);padding-left:32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .sec-title{font-size:24px;}
  .hero-body h1{font-size:30px;}
  .hero-figure{aspect-ratio:16/9;}
  .zig-row{grid-template-columns:1fr;gap:24px;}
  .zig-rev .zig-fig{order:1;}
  .zig-rev .zig-txt{order:2;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-bar h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-col:nth-child(even){border-left:none;padding-left:0;}
  .accordion-button{padding:18px 40px 18px 34px;font-size:16px;}
  .accordion-button::before{top:18px;font-size:15px;}
  .accordion-body{padding:0 20px 22px 34px;}
}
@media (max-width:575px){
  .container{padding:0 18px;}
  .hero-body h1{font-size:27px;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
}

/* roulang page: article */
:root{
  --c-primary:#17514A;
  --c-primary-deep:#0F3B36;
  --c-primary-soft:#2E7A6E;
  --c-primary-tint:#E7F0EC;
  --c-accent:#C4693B;
  --c-bg:#F6F3EC;
  --c-bg-alt:#EDE9E0;
  --c-surface:#FFFFFF;
  --c-text:#1A1D1C;
  --c-text-2:#5A625F;
  --c-text-3:#8C938F;
  --c-line:#E2DCD1;
  --r-card:14px;
  --r-btn:10px;
  --r-input:8px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(26,29,28,.04);
  --sh-2:0 8px 24px rgba(26,29,28,.06);
  --sh-3:0 14px 34px rgba(15,59,54,.12);
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-soft);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.34;font-weight:600;color:var(--c-text);}
p{margin:0 0 1.2em;}
button,input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.serif{font-family:var(--font-serif);}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .24s ease,background-color .24s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);background:rgba(255,255,255,.98);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:12px;}
.brand-mark{
  width:38px;height:38px;border-radius:8px;
  border:1.5px solid var(--c-primary);
  color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:19px;line-height:1;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.brand:hover .brand-mark{background:var(--c-accent);border-color:var(--c-accent);color:#fff;}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:19px;letter-spacing:.01em;color:var(--c-text);}
.brand-text em{font-style:normal;font-size:12px;color:var(--c-text-3);letter-spacing:.04em;}
.nav-main{display:flex;align-items:center;gap:28px;}
.nav-main a{
  position:relative;font-size:15.5px;font-weight:500;color:var(--c-text-2);
  padding:6px 0;transition:color .2s ease;
}
.nav-main a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-main a:hover{color:var(--c-text);}
.nav-main a:hover::after{transform:scaleX(1);}
.nav-main a.is-active{color:var(--c-text);font-weight:600;}
.nav-main a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);
  background:var(--c-surface);border-radius:var(--r-input);cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--c-text);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--c-text);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn-ink,.btn-line,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;}
.btn-ink{
  background:var(--c-primary);color:#fff;border:none;
  border-radius:var(--r-btn);padding:12px 24px;font-size:15.5px;font-weight:600;
  transition:background-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-ink:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-3);}
.btn-ink:active{transform:translateY(0);}
.btn-line{
  background:transparent;color:var(--c-primary);border:1px solid var(--c-primary);
  border-radius:var(--r-btn);padding:11px 22px;font-size:15.5px;font-weight:600;
  transition:background-color .2s ease,transform .2s ease;
}
.btn-line:hover{background:var(--c-primary-tint);color:var(--c-primary);transform:translateY(-2px);}
.btn-ghost{
  background:transparent;border:none;padding:0;color:var(--c-primary);
  font-size:15px;font-weight:600;
}
.btn-ghost svg{transition:transform .2s ease;}
.btn-ghost:hover svg{transform:translateX(4px);}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--c-bg);padding:20px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-text-2);}
.crumb a{color:var(--c-text-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:var(--c-text-3);}
.crumb .current{color:var(--c-text-3);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头部 ---------- */
.article-top{padding:28px 0 0;}
.article-head{max-width:860px;}
.badge-soft{
  display:inline-block;background:var(--c-primary-tint);color:var(--c-primary);
  border-radius:999px;padding:4px 12px;font-size:13.5px;font-weight:600;
}
.article-head h1{
  font-family:var(--font-serif);
  font-size:34px;line-height:1.4;letter-spacing:.01em;
  margin:18px 0 0;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:20px;padding-bottom:22px;
  border-bottom:1px solid var(--c-line);
  font-size:14px;color:var(--c-text-2);
}
.meta-dot{width:4px;height:4px;background:var(--c-text-3);border-radius:1px;display:inline-block;}

/* ---------- 布局 ---------- */
.layout{padding:44px 0 88px;}
.side-sticky{position:sticky;top:96px;}

/* ---------- 正文排版 ---------- */
.post-content{max-width:760px;font-size:17px;line-height:1.9;color:var(--c-text);}
.post-content > *:first-child{margin-top:0;}
.post-content p{margin:0 0 1.2em;}
.post-content h2{
  font-family:var(--font-serif);font-size:24px;line-height:1.45;
  margin:40px 0 16px;padding-left:16px;border-left:4px solid var(--c-primary);
}
.post-content h3{font-size:19px;margin:28px 0 12px;}
.post-content h4{font-size:17px;margin:22px 0 10px;color:var(--c-text-2);}
.post-content ul,.post-content ol{margin:0 0 1.2em;padding-left:0;}
.post-content ul > li,.post-content ol > li{position:relative;padding-left:22px;margin-bottom:8px;line-height:1.9;}
.post-content ul > li::before{
  content:"";position:absolute;left:4px;top:12px;width:7px;height:7px;
  background:var(--c-accent);border-radius:1px;
}
.post-content ol{counter-reset:pc;}
.post-content ol > li{counter-increment:pc;}
.post-content ol > li::before{
  content:counter(pc);position:absolute;left:0;top:0;width:18px;
  font-family:var(--font-serif);font-size:15px;color:var(--c-accent);
}
.post-content blockquote{
  margin:24px 0;padding:20px 22px;background:var(--c-bg-alt);
  border-left:3px solid var(--c-primary);border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--c-text-2);
}
.post-content blockquote p:last-child{margin-bottom:0;}
.post-content img{border-radius:var(--r-img);margin:26px 0 10px;width:100%;object-fit:cover;}
.post-content figure{margin:26px 0;}
.post-content figcaption{
  font-size:13px;color:var(--c-text-3);text-align:center;margin-top:8px;
}
.post-content a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.post-content a:hover{color:var(--c-accent);}
.post-content code{
  background:var(--c-primary-tint);color:var(--c-primary-deep);
  padding:2px 6px;border-radius:4px;font-size:15px;word-break:break-all;
}
.post-content pre{
  background:var(--c-primary-deep);color:#EAF3F0;padding:18px 20px;
  border-radius:var(--r-card);overflow-x:auto;font-size:14.5px;line-height:1.7;
}
.post-content pre code{background:transparent;color:inherit;padding:0;}
.table-wrap{overflow-x:auto;margin:24px 0;border:1px solid var(--c-line);border-radius:var(--r-card);}
.post-content table{width:100%;border-collapse:collapse;font-size:15.5px;min-width:520px;}
.post-content th{background:var(--c-primary-tint);color:var(--c-primary-deep);text-align:left;font-weight:600;}
.post-content th,.post-content td{padding:12px 16px;border-bottom:1px solid var(--c-line);vertical-align:top;}
.post-content tbody tr:last-child td{border-bottom:none;}
.post-content tbody tr:nth-child(even){background:rgba(231,240,236,.42);}
.post-content hr{border:none;border-top:1px solid var(--c-line);margin:32px 0;}
.post-content strong{font-weight:600;}
.post-content p,.post-content li{word-break:break-word;overflow-wrap:anywhere;}

/* ---------- 空态 ---------- */
.post-empty{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:64px 28px;text-align:center;box-shadow:var(--sh-1);max-width:760px;
}
.post-empty svg{color:var(--c-primary);margin-bottom:16px;}
.post-empty h2{font-family:var(--font-serif);font-size:24px;margin-bottom:10px;}
.post-empty p{color:var(--c-text-2);font-size:16px;margin-bottom:22px;}

/* ---------- 标签与文末 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:40px 0 0;padding-top:24px;border-top:1px solid var(--c-line);}
.tag-row a{
  background:var(--c-primary-tint);color:var(--c-primary);
  border-radius:999px;padding:6px 14px;font-size:14px;font-weight:500;
  transition:background-color .2s ease,color .2s ease;
}
.tag-row a:hover{background:var(--c-primary);color:#fff;}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:36px;}
.post-nav-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.post-nav-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:var(--c-primary-tint);}
.post-nav-card span{display:block;font-size:13px;color:var(--c-text-3);margin-bottom:8px;}
.post-nav-card strong{display:block;font-size:16.5px;font-weight:600;color:var(--c-text);line-height:1.6;}
.post-nav-card:hover strong{color:var(--c-primary);}
.back-row{margin-top:32px;}

/* ---------- 侧栏 ---------- */
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);margin-bottom:24px;
}
.side-card h3{
  font-size:17px;font-weight:600;margin:0 0 16px;padding-left:12px;
  border-left:4px solid var(--c-primary);line-height:1.2;
}
.toc-list li{margin-bottom:2px;}
.toc-list a{
  display:block;font-size:15px;color:var(--c-text-2);line-height:1.7;
  padding:7px 10px;border-left:2px solid transparent;border-radius:0 6px 6px 0;
  transition:color .2s ease,background-color .2s ease,border-color .2s ease;
}
.toc-list a:hover{color:var(--c-primary);background:var(--c-primary-tint);}
.toc-list a.is-current{color:var(--c-primary);font-weight:600;background:var(--c-primary-tint);border-left-color:var(--c-accent);}
.side-posts li{padding-left:14px;border-left:3px solid var(--c-line);margin-bottom:18px;transition:border-color .2s ease;}
.side-posts li:hover{border-left-color:var(--c-primary);}
.side-posts a{font-size:15.5px;font-weight:600;color:var(--c-text);line-height:1.65;display:block;}
.side-posts a:hover{color:var(--c-primary);}
.side-posts em{font-style:normal;display:block;font-size:13.5px;color:var(--c-text-3);margin-top:6px;}
.side-note{font-size:14px;color:var(--c-text-2);line-height:1.8;}

/* ---------- CTA 横条 ---------- */
.cta-strip{background:var(--c-primary-deep);color:#fff;padding:44px 0;}
.cta-strip .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;}
.cta-strip h2{font-family:var(--font-serif);font-size:24px;color:#fff;margin-bottom:8px;}
.cta-strip p{color:rgba(255,255,255,.72);font-size:15.5px;margin:0;}
.btn-white-line{
  display:inline-flex;align-items:center;gap:8px;
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.7);
  border-radius:var(--r-btn);padding:12px 24px;font-size:15.5px;font-weight:600;
  transition:background-color .2s ease,color .2s ease,transform .2s ease;
}
.btn-white-line:hover{background:#fff;color:var(--c-primary-deep);transform:translateY(-2px);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-deep);color:rgba(255,255,255,.86);padding:64px 0 28px;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:0;
}
.footer-col{padding:0 28px;border-left:1px solid rgba(255,255,255,.12);}
.footer-col:first-child{border-left:none;padding-left:0;}
.footer-col:last-child{padding-right:0;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{border-color:rgba(255,255,255,.5);color:#fff;}
.footer-brand strong{font-size:18px;color:#fff;}
.footer-col p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66);margin:0;max-width:34ch;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-links li,.footer-info li{margin-bottom:11px;font-size:14.5px;}
.footer-links a{color:rgba(255,255,255,.72);}
.footer-links a:hover,.footer-info a:hover{color:var(--c-accent);padding-left:4px;}
.footer-links a{display:inline-block;transition:color .2s ease,padding-left .2s ease;}
.footer-info li{display:flex;align-items:flex-start;gap:10px;color:rgba(255,255,255,.72);line-height:1.7;}
.footer-info svg{flex:none;margin-top:4px;stroke:rgba(255,255,255,.6);fill:none;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.6);margin-left:16px;}
.footer-bottom a:hover{color:var(--c-accent);}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{width:320px;background:var(--c-surface);}
.mobile-drawer .offcanvas-header{border-bottom:1px solid var(--c-line);padding:16px 20px;}
.mobile-drawer .offcanvas-body{padding:20px;display:flex;flex-direction:column;}
.drawer-nav{display:flex;flex-direction:column;margin-bottom:24px;}
.drawer-nav a{
  font-size:17px;line-height:2.4;color:var(--c-text-2);
  border-bottom:1px solid var(--c-line);transition:color .2s ease,padding-left .2s ease;
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--c-primary);padding-left:6px;font-weight:600;}
.drawer-contact{margin-top:auto;font-size:14px;color:var(--c-text-2);line-height:1.9;}
.drawer-contact strong{display:block;color:var(--c-text);margin-bottom:6px;font-size:15px;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-head h1{font-size:30px;}
  .post-content h2{font-size:22px;}
}
@media (max-width:991.98px){
  .nav-main,.header-actions .btn-ink{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:60px;}
  .layout{padding:32px 0 64px;}
  .side-sticky{position:static;margin-top:40px;}
  .footer-grid{grid-template-columns:1fr 1fr;row-gap:36px;}
  .footer-col{padding:0 20px;border-left:none;}
  .footer-col:nth-child(odd){padding-left:0;}
}
@media (max-width:767.98px){
  body{font-size:16.5px;}
  .site-header .container{padding-left:18px;padding-right:18px;}
  .crumb-bar{padding-top:16px;}
  .article-head h1{font-size:27px;}
  .article-meta{font-size:13.5px;padding-bottom:18px;}
  .post-content{font-size:16.5px;}
  .post-content h2{font-size:20px;margin:32px 0 14px;padding-left:13px;}
  .post-content h3{font-size:18px;}
  .post-nav{grid-template-columns:1fr;}
  .cta-strip{padding:36px 0;}
  .cta-strip h2{font-size:20px;}
  .post-empty{padding:44px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-col{padding:0;}
  .footer-bottom{flex-direction:column;}
  .footer-bottom a{margin-left:0;margin-right:16px;}
}
@media (max-width:519.98px){
  .container{padding-left:16px;padding-right:16px;}
  .brand-text em{display:none;}
  .article-head h1{font-size:24px;}
  .side-card{padding:20px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#17514A;
  --c-primary-deep:#0F3B36;
  --c-primary-soft:#2E7A6E;
  --c-primary-tint:#E7F0EC;
  --c-accent:#C4693B;
  --c-bg:#F6F3EC;
  --c-bg-alt:#EDE9E0;
  --c-surface:#FFFFFF;
  --c-text:#1A1D1C;
  --c-text-2:#5A625F;
  --c-text-3:#8C938F;
  --c-line:#E2DCD1;
  --c-on-dark:#FFFFFF;
  --c-on-dark-70:rgba(255,255,255,.70);
  --c-on-dark-line:rgba(255,255,255,.12);
  --sh-1:0 1px 2px rgba(26,29,28,.04);
  --sh-2:0 8px 24px rgba(26,29,28,.06);
  --sh-3:0 14px 34px rgba(15,59,54,.12);
  --r-card:14px;
  --r-btn:10px;
  --r-input:8px;
  --r-img:14px;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary-soft)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.32;font-weight:600;letter-spacing:.01em}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.serif{font-family:var(--font-serif)}
.container{max-width:1200px;padding-left:24px;padding-right:24px}
.section{padding:96px 0}
.section-alt{background:var(--c-bg-alt)}
.section-tight{padding:72px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;color:var(--c-text-2);letter-spacing:.04em;margin-bottom:16px;
}
.eyebrow::before{content:"";width:8px;height:8px;background:var(--c-accent);border-radius:1px}
.sec-title{font-family:var(--font-serif);font-size:34px;line-height:1.3;position:relative;padding-left:18px}
.sec-title::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;background:var(--c-primary);border-radius:2px}
.sec-lead{color:var(--c-text-2);font-size:17px;max-width:680px;margin-top:16px}
.rule-dot{height:1px;background:var(--c-line);position:relative;margin:40px 0}
.rule-dot::after{content:"";position:absolute;left:0;top:-3.5px;width:8px;height:8px;background:var(--c-accent)}

/* ---------- 按钮 ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,background-color .22s ease,box-shadow .22s ease,color .22s ease,border-color .22s ease;
}
.btn-primary-x{background:var(--c-primary);color:var(--c-on-dark)}
.btn-primary-x:hover{background:var(--c-primary-deep);color:var(--c-on-dark);transform:translateY(-2px);box-shadow:var(--sh-3)}
.btn-primary-x:active{transform:translateY(0)}
.btn-ghost-x{background:transparent;color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost-x:hover{background:var(--c-primary-tint);color:var(--c-primary);transform:translateY(-2px)}
.btn-ghost-x:active{transform:translateY(0)}
.btn-light-x{background:transparent;color:var(--c-on-dark);border-color:rgba(255,255,255,.55)}
.btn-light-x:hover{background:var(--c-on-dark);color:var(--c-primary-deep);transform:translateY(-2px)}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary);
}
.link-arrow svg{transition:transform .2s ease}
.link-arrow:hover{color:var(--c-primary-soft)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- 徽章 / 标签 ---------- */
.badge-x{
  display:inline-block;padding:4px 12px;border-radius:999px;
  background:var(--c-primary-tint);color:var(--c-primary);
  font-size:14px;line-height:1.7;font-weight:500;
}
.badge-x.accent{background:#F3E4DA;color:var(--c-accent)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:var(--c-surface);
  border-bottom:1px solid var(--c-line);transition:box-shadow .24s ease,background-color .24s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);background:rgba(255,255,255,.98)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-text)}
.logo-mark{
  width:36px;height:36px;border:1.5px solid var(--c-primary);border-radius:8px;
  display:grid;place-items:center;color:var(--c-primary);
  font-family:var(--font-serif);font-size:15px;font-weight:700;letter-spacing:0;
  transition:background-color .22s ease,border-color .22s ease,color .22s ease;
}
.logo:hover .logo-mark{background:var(--c-accent);border-color:var(--c-accent);color:var(--c-on-dark)}
.logo-text{font-family:var(--font-serif);font-size:20px;font-weight:600;letter-spacing:.01em}
.logo-text em{font-style:normal;font-weight:700}
.nav-main{display:flex;align-items:center;gap:28px}
.nav-main a{
  position:relative;font-size:16px;font-weight:500;color:var(--c-text-2);padding:6px 0;
}
.nav-main a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-main a:hover{color:var(--c-text)}
.nav-main a:hover::after{transform:scaleX(1)}
.nav-main a.is-active{color:var(--c-text);font-weight:600}
.nav-main a.is-active::after{transform:scaleX(1)}
.header-cta{min-height:44px;padding:0 22px;font-size:15px}
.nav-toggle{
  width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:var(--c-surface);display:none;place-items:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--c-text);margin:3.5px 0;transition:transform .2s ease}
.nav-toggle:hover span{background:var(--c-primary)}

/* offcanvas 抽屉 */
.offcanvas.drawer-x{width:86%;max-width:330px;background:var(--c-bg);border-left:1px solid var(--c-line)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--c-line)}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--c-line);background:var(--c-surface);border-radius:var(--r-btn);
  display:grid;place-items:center;cursor:pointer;color:var(--c-text-2);
}
.drawer-body{padding:12px 22px 28px}
.drawer-nav a{
  display:block;font-size:18px;color:var(--c-text);padding:14px 0;border-bottom:1px solid var(--c-line);
}
.drawer-nav a.is-active{color:var(--c-primary);font-weight:600}
.drawer-foot{padding:20px 22px 28px;border-top:1px solid var(--c-line);background:var(--c-surface)}
.drawer-foot .btn-x{width:100%}
.drawer-foot p{font-size:14px;color:var(--c-text-2);margin-top:14px}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--c-bg);border-bottom:1px solid var(--c-line)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--c-text-2);padding:16px 0}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:var(--c-text-3)}
.crumb .current{color:var(--c-text)}

/* ---------- Hero ---------- */
.hero-cat{position:relative;overflow:hidden;background:var(--c-bg);padding:84px 0 88px}
.hero-cat::after{
  content:"";position:absolute;right:-60px;bottom:-90px;width:340px;height:340px;
  border:1px solid var(--c-line);border-radius:50%;pointer-events:none;
}
.hero-cat::before{
  content:"";position:absolute;left:0;top:0;width:120px;height:120px;
  border-right:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
  border-bottom-right-radius:120px;opacity:.8;pointer-events:none;
}
.hero-cat h1{
  font-family:var(--font-serif);font-size:44px;line-height:1.28;letter-spacing:.01em;margin-bottom:20px;
}
.hero-cat h1 .seal{
  display:inline-block;width:24px;height:24px;background:var(--c-accent);border-radius:3px;
  vertical-align:middle;margin-right:12px;position:relative;top:-2px;
}
.hero-lead{font-size:18px;color:var(--c-text-2);max-width:620px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px}
.hero-facts{display:flex;flex-wrap:wrap;gap:28px;padding-top:28px;border-top:1px solid var(--c-line)}
.hero-facts div{min-width:120px}
.hero-facts b{display:block;font-family:var(--font-serif);font-size:28px;color:var(--c-primary);line-height:1.2}
.hero-facts span{font-size:14px;color:var(--c-text-2)}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-2);
}
.hero-figure figcaption{font-size:13px;color:var(--c-text-3);text-align:center;margin-top:12px}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:11px;top:14px;bottom:14px;width:1px;background:var(--c-line);
}
.tl-item{position:relative;padding-left:56px;margin-bottom:28px}
.tl-item:last-child{margin-bottom:0}
.tl-node{
  position:absolute;left:0;top:26px;width:24px;height:24px;border-radius:50%;
  background:var(--c-bg);border:1px solid var(--c-line);display:grid;place-items:center;
}
.tl-node::after{content:"";width:10px;height:10px;border-radius:50%;background:var(--c-accent)}
.tl-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);transition:box-shadow .24s ease,transform .24s ease;
}
.tl-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px)}
.tl-head{display:flex;align-items:baseline;gap:14px;margin-bottom:12px}
.tl-num{font-family:var(--font-serif);font-size:22px;color:var(--c-accent);line-height:1}
.tl-card h3{font-size:20px;font-family:var(--font-sans)}
.tl-card p{color:var(--c-text-2);font-size:16px;margin-bottom:18px}
.tl-result{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding-top:16px;border-top:1px solid var(--c-line)}
.tl-result .label{font-size:13px;color:var(--c-text-3)}

/* ---------- 深色数据条 ---------- */
.stat-band{background:var(--c-primary-deep);padding:64px 0;color:var(--c-on-dark)}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.stat-cell{padding:8px 32px;border-left:1px solid var(--c-on-dark-line)}
.stat-cell:first-child{border-left:0;padding-left:0}
.stat-cell b{display:block;font-family:var(--font-serif);font-size:44px;line-height:1.1;color:var(--c-on-dark)}
.stat-cell span{display:block;font-size:14px;color:var(--c-on-dark-70);margin-top:10px}
.stat-note{font-size:14px;color:var(--c-on-dark-70);margin-top:34px;max-width:720px}

/* ---------- 能力网格 ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:44px}
.cap-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);transition:box-shadow .24s ease,transform .24s ease,border-color .24s ease;
}
.cap-card:hover{box-shadow:var(--sh-3);transform:translateY(-4px);border-color:var(--c-primary-tint)}
.cap-icon{
  width:44px;height:44px;border-radius:10px;background:var(--c-primary-tint);
  display:grid;place-items:center;color:var(--c-primary);margin-bottom:18px;transition:color .22s ease;
}
.cap-card:hover .cap-icon{color:var(--c-accent)}
.cap-card h3{font-size:20px;margin-bottom:10px}
.cap-card p{font-size:16px;color:var(--c-text-2);margin-bottom:16px}

/* ---------- 图文交付块 ---------- */
.media-block{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center}
.media-block img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-2)}
.media-body h2{font-size:34px;font-family:var(--font-serif);padding-left:18px;position:relative;margin-bottom:20px}
.media-body h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;background:var(--c-primary);border-radius:2px}
.media-body p{color:var(--c-text-2)}
.check-list{margin-top:24px}
.check-list li{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--c-line);font-size:16px}
.check-list li:last-child{border-bottom:0}
.check-list svg{flex:0 0 18px;margin-top:7px;color:var(--c-primary)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:44px auto 0}
.accordion-item{border:0;background:transparent;border-bottom:1px solid var(--c-line)}
.accordion-button{
  position:relative;background:transparent;box-shadow:none;border-radius:0;
  padding:22px 44px 22px 0;font-size:17px;font-weight:600;color:var(--c-text);
  display:flex;align-items:baseline;gap:14px;
}
.accordion-button:not(.collapsed){color:var(--c-primary);background:transparent;box-shadow:none}
.accordion-button:focus{box-shadow:none;border-color:transparent}
.accordion-button:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.accordion-button::before{
  content:"";position:absolute;right:0;top:50%;width:14px;height:1.5px;background:var(--c-primary);transform:translateY(-50%);
}
.accordion-button::after{
  content:"";position:absolute;right:6.2px;top:50%;width:1.5px;height:14px;background:var(--c-primary);
  transform:translateY(-50%) scaleY(1);transform-origin:center;transition:transform .24s ease,opacity .24s ease;
  background-image:none;
}
.accordion-button:not(.collapsed)::after{transform:translateY(-50%) scaleY(0);opacity:0}
.faq-num{font-family:var(--font-serif);color:var(--c-accent);font-size:17px;flex:0 0 auto}
.accordion-body{padding:0 40px 24px 0;font-size:15px;line-height:1.9;color:var(--c-text-2)}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:36px}
.rel-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);transition:box-shadow .24s ease,transform .24s ease;
}
.rel-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px)}
.rel-card h3{font-size:20px;color:var(--c-text);margin-bottom:8px}
.rel-card p{font-size:15px;color:var(--c-text-2);margin-bottom:14px}

/* ---------- CTA 横条 ---------- */
.cta-band{background:var(--c-primary-deep);color:var(--c-on-dark);padding:56px 0}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px}
.cta-inner h2{font-family:var(--font-serif);font-size:28px;color:var(--c-on-dark);margin-bottom:10px}
.cta-inner p{color:var(--c-on-dark-70);font-size:16px;max-width:640px;margin:0}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-deep);color:var(--c-on-dark-70);padding:72px 0 0;font-size:15px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:0}
.footer-col{padding:0 32px;border-left:1px solid var(--c-on-dark-line)}
.footer-col:first-child{border-left:0;padding-left:0}
.footer-col:last-child{padding-right:0}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--c-on-dark);margin-bottom:16px}
.footer-brand .brand-mark{
  width:34px;height:34px;border:1.5px solid var(--c-on-dark-70);border-radius:8px;
  display:grid;place-items:center;font-family:var(--font-serif);font-size:14px;font-weight:700;
}
.footer-brand strong{font-family:var(--font-serif);font-size:19px;font-weight:600}
.footer-col h4{font-size:16px;color:var(--c-on-dark);margin-bottom:18px;font-weight:600}
.footer-links li{margin-bottom:12px}
.footer-links a{color:var(--c-on-dark-70);font-size:15px;transition:color .2s ease,transform .2s ease;display:inline-block}
.footer-links a:hover{color:var(--c-accent);transform:translateX(4px)}
.footer-info li{display:flex;gap:10px;align-items:flex-start;margin-bottom:14px;font-size:15px}
.footer-info svg{flex:0 0 18px;margin-top:6px;stroke:var(--c-on-dark-70)}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--c-on-dark-line);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:14px;color:rgba(255,255,255,.55);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .hero-cat h1{font-size:40px}
  .sec-title{font-size:30px}
  .media-body h2{font-size:30px}
}
@media (max-width:991.98px){
  .nav-main,.header-cta{display:none}
  .nav-toggle{display:grid}
  .header-inner{height:60px}
  .section{padding:72px 0}
  .hero-cat{padding:64px 0 68px}
  .hero-cat h1{font-size:34px}
  .stat-grid{grid-template-columns:1fr;gap:24px}
  .stat-cell{border-left:0;padding:0;border-top:1px solid var(--c-on-dark-line);padding-top:20px}
  .stat-cell:first-child{border-top:0;padding-top:0}
  .cap-grid{grid-template-columns:1fr}
  .media-block{grid-template-columns:1fr;gap:32px}
  .rel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px 0}
  .footer-col:nth-child(3){border-left:0;padding-left:0}
  .footer-col:nth-child(1),.footer-col:nth-child(2){padding-left:0}
  .footer-col:nth-child(2){border-left:1px solid var(--c-on-dark-line);padding-left:32px}
  .footer-col:nth-child(4){padding-left:32px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .section{padding:64px 0}
  .sec-title{font-size:24px}
  .hero-cat h1{font-size:28px;margin-bottom:16px}
  .hero-lead{font-size:16px}
  .hero-cat::after,.hero-cat::before{display:none}
  .hero-actions .btn-x{width:100%}
  .hero-facts{gap:20px}
  .hero-facts b{font-size:24px}
  .tl-item{padding-left:44px}
  .timeline::before{left:9px}
  .tl-node{width:20px;height:20px;top:24px}
  .tl-card{padding:20px}
  .media-body h2,.cta-inner h2{font-size:24px}
  .cta-inner .btn-x{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-col{border-left:0;padding:0 0 28px;border-bottom:1px solid var(--c-on-dark-line);margin-bottom:28px}
  .footer-col:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
  .accordion-button{font-size:16px;padding-right:38px}
  .accordion-body{padding-right:0}
}
@media (max-width:519.98px){
  .container{padding-left:18px;padding-right:18px}
  .hero-cat h1{font-size:26px}
  .tl-item{padding-left:34px}
  .timeline::before{left:7px}
  .tl-node{width:16px;height:16px;top:26px;left:0}
  .tl-node::after{width:8px;height:8px}
}

/* roulang page: category3 */
:root{
  --c-primary:#17514A;
  --c-primary-deep:#0F3B36;
  --c-primary-soft:#2E7A6E;
  --c-primary-tint:#E7F0EC;
  --c-accent:#C4693B;
  --c-bg:#F6F3EC;
  --c-bg-alt:#EDE9E0;
  --c-surface:#FFFFFF;
  --c-text:#1A1D1C;
  --c-text-2:#5A625F;
  --c-text-3:#8C938F;
  --c-line:#E2DCD1;
  --r-card:14px;
  --r-btn:10px;
  --r-input:8px;
  --sh-1:0 1px 2px rgba(26,29,28,.04);
  --sh-2:0 8px 24px rgba(26,29,28,.06);
  --sh-3:0 14px 34px rgba(15,59,54,.12);
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,transform .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--c-primary-soft);}
h1,h2,h3,h4{margin:0;letter-spacing:.01em;color:var(--c-text);line-height:1.35;}
p{margin:0 0 1.2em;max-width:760px;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.serif{font-family:var(--font-serif);}
.container,.container-fluid{max-width:1200px !important;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section--alt{background:var(--c-bg-alt);}
.section--dark{background:var(--c-primary-deep);color:#fff;}
.section--tight{padding-top:72px;}
.sec-head{margin-bottom:48px;max-width:820px;}
.sec-title{font-family:var(--font-serif);font-size:34px;line-height:1.3;position:relative;padding-left:18px;font-weight:600;}
.sec-title::before{content:"";position:absolute;left:0;top:.2em;width:4px;height:.86em;background:var(--c-primary);border-radius:2px;}
.sec-desc{color:var(--c-text-2);font-size:16px;margin-top:16px;margin-bottom:0;}
.section--dark .sec-title{color:#fff;}
.section--dark .sec-title::before{background:var(--c-accent);}
.section--dark .sec-desc{color:rgba(255,255,255,.72);}
.divider-dot{display:flex;align-items:center;gap:10px;margin:0 0 40px;}
.divider-dot::before{content:"";flex:1;height:1px;background:var(--c-line);}
.divider-dot::after{content:"";width:8px;height:8px;background:var(--c-accent);border-radius:2px;}

/* ---------- 按钮 ---------- */
.btn-primary-pill{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--c-primary);color:#fff;border:1px solid var(--c-primary);
  border-radius:var(--r-btn);padding:13px 26px;font-size:15px;font-weight:600;
  line-height:1.5;cursor:pointer;transition:all .22s ease;
}
.btn-primary-pill:hover{background:var(--c-primary-deep);border-color:var(--c-primary-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-3);}
.btn-primary-pill:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--c-primary);border:1px solid var(--c-primary);
  border-radius:var(--r-btn);padding:13px 26px;font-size:15px;font-weight:600;line-height:1.5;
  cursor:pointer;transition:all .22s ease;
}
.btn-ghost:hover{background:var(--c-primary-tint);color:var(--c-primary);transform:translateY(-2px);}
.btn-white{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--c-primary-deep);border:1px solid #fff;
  border-radius:var(--r-btn);padding:13px 26px;font-size:15px;font-weight:600;line-height:1.5;
  cursor:pointer;transition:all .22s ease;
}
.btn-white:hover{background:var(--c-accent);border-color:var(--c-accent);color:#fff;transform:translateY(-2px);}
.btn-link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;font-size:15px;}
.btn-link-arrow svg{transition:transform .2s ease;}
.btn-link-arrow:hover{color:var(--c-primary-soft);}
.btn-link-arrow:hover svg{transform:translateX(4px);}

/* ---------- 徽章 / 标签 ---------- */
.badge-tag{display:inline-block;background:var(--c-primary-tint);color:var(--c-primary);border-radius:999px;padding:4px 10px;font-size:14px;line-height:1.6;}
.badge-tag--warm{background:#F6E7DE;color:#8E4623;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:var(--c-surface);
  border-bottom:1px solid var(--c-line);transition:box-shadow .25s ease,background-color .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);background:rgba(255,255,255,.98);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:34px;height:34px;border:1.5px solid var(--c-primary);border-radius:8px;
  display:grid;place-items:center;font-family:var(--font-serif);font-size:17px;
  color:var(--c-primary);transition:all .22s ease;flex:none;
}
.brand:hover .brand-mark{background:var(--c-accent);border-color:var(--c-accent);color:#fff;}
.brand-text{font-size:18px;font-weight:600;color:var(--c-text);letter-spacing:.01em;}
.brand-text strong{font-family:var(--font-serif);font-weight:700;color:var(--c-primary);}
.brand:hover .brand-text{color:var(--c-text);}
.nav-main{display:none;align-items:center;gap:30px;}
.nav-main a{position:relative;font-size:15.5px;font-weight:500;color:var(--c-text-2);padding:6px 0;}
.nav-main a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-main a:hover{color:var(--c-text);}
.nav-main a:hover::after{transform:scaleX(1);}
.nav-main a.is-active{color:var(--c-primary);font-weight:600;}
.nav-main a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.header-cta{display:none;padding:11px 22px;font-size:14.5px;}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;background:transparent;border:1px solid var(--c-line);
  border-radius:var(--r-input);color:var(--c-text);cursor:pointer;transition:all .2s ease;
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-tint);}
@media (min-width:992px){
  .nav-main{display:flex;}
  .header-cta{display:inline-flex;}
  .nav-toggle{display:none;}
}

/* 移动抽屉 */
.nav-drawer{width:86%;max-width:340px;border-left:none;background:var(--c-surface);}
.nav-drawer .offcanvas-header{padding:18px 24px;border-bottom:1px solid var(--c-line);align-items:center;}
.nav-drawer .offcanvas-body{padding:0;display:flex;flex-direction:column;justify-content:space-between;}
.drawer-close{
  width:44px;height:44px;display:grid;place-items:center;background:transparent;
  border:none;color:var(--c-text-2);cursor:pointer;border-radius:var(--r-input);
}
.drawer-close:hover{background:var(--c-primary-tint);color:var(--c-primary);}
.drawer-nav{padding:8px 0;}
.drawer-nav a{
  display:block;padding:16px 24px;font-size:18px;line-height:1.6;color:var(--c-text);
  border-bottom:1px solid var(--c-line);
}
.drawer-nav a:hover{color:var(--c-primary);background:var(--c-primary-tint);}
.drawer-nav a.is-active{color:var(--c-primary);font-weight:600;border-left:3px solid var(--c-primary);padding-left:21px;}
.drawer-foot{padding:24px;border-top:1px solid var(--c-line);background:var(--c-bg);}
.drawer-foot .btn-primary-pill{width:100%;}
.drawer-contact{margin:16px 0 0;font-size:14px;color:var(--c-text-2);}

/* ---------- 面包屑 ---------- */
.breadcrumb-nav{
  display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px;
  font-size:14px;color:var(--c-text-2);margin-bottom:22px;
}
.breadcrumb-nav a{color:var(--c-text-2);}
.breadcrumb-nav a:hover{color:var(--c-primary);}
.breadcrumb-nav .sep{color:var(--c-text-3);}
.breadcrumb-nav .current{color:var(--c-text);}

/* ---------- 居中 Hero ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--c-bg);padding:72px 0 80px;text-align:center;}
.page-hero::before{
  content:"";position:absolute;inset:0;background:url(/assets/images/backpic/back-2.webp) center/cover no-repeat;opacity:.09;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--c-line);
}
.page-hero .container{position:relative;z-index:1;}
.hero-seal{
  display:grid;place-items:center;width:24px;height:24px;border-radius:4px;
  background:var(--c-accent);color:#fff;font-family:var(--font-serif);font-size:14px;
  margin:0 auto 20px;line-height:1;
}
.hero-title{font-family:var(--font-serif);font-size:46px;line-height:1.28;font-weight:600;margin-bottom:20px;}
.hero-title em{font-style:normal;color:var(--c-primary);}
.hero-lead{font-size:17px;color:var(--c-text-2);max-width:760px;margin:0 auto 18px;}
.hero-para{font-size:15.5px;color:var(--c-text-2);max-width:740px;margin:0 auto 32px;}
.hero-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;margin-bottom:44px;}
.hero-stats{display:flex;justify-content:center;flex-wrap:wrap;gap:0;}
.hero-stats li{position:relative;padding:0 40px;text-align:center;}
.hero-stats li + li::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:1px;background:var(--c-line);}
.hero-stats .num{font-family:var(--font-serif);font-size:32px;color:var(--c-primary);line-height:1.2;display:block;}
.hero-stats .lbl{font-size:13.5px;color:var(--c-text-3);display:block;margin-top:4px;}
@media (max-width:991.98px){
  .hero-title{font-size:36px;}
  .hero-stats li{padding:0 24px;}
  .hero-stats .num{font-size:26px;}
}
@media (max-width:575.98px){
  .page-hero{padding:52px 0 56px;}
  .hero-title{font-size:28px;}
  .hero-lead{font-size:15.5px;}
  .hero-actions .btn-primary-pill,.hero-actions .btn-ghost{width:100%;}
  .hero-stats{gap:18px 0;}
  .hero-stats li{padding:0 14px;min-width:50%;}
  .hero-stats li:nth-child(3)::before{display:none;}
  .hero-stats .num{font-size:22px;}
}

/* ---------- 规格表 ---------- */
.table-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
}
table.spec-table{width:100%;border-collapse:collapse;}
.spec-table th,.spec-table td{padding:18px 28px;text-align:left;vertical-align:top;font-size:15.5px;border-bottom:1px solid var(--c-line);}
.spec-table thead th{background:var(--c-primary-deep);color:#fff;font-size:14px;font-weight:600;letter-spacing:.04em;border-bottom:none;padding-top:16px;padding-bottom:16px;}
.spec-table tbody th{width:200px;background:var(--c-bg-alt);font-weight:600;color:var(--c-text);}
.spec-table tbody td{color:var(--c-text-2);}
.spec-table tbody tr:last-child th,.spec-table tbody tr:last-child td{border-bottom:none;}
.spec-table tbody tr:hover td{background:#FCFBF8;}
@media (max-width:767.98px){
  .spec-table thead{display:none;}
  .spec-table tbody tr{display:block;border-bottom:1px solid var(--c-line);}
  .spec-table tbody tr:last-child{border-bottom:none;}
  .spec-table tbody th,.spec-table tbody td{display:block;width:100%;border-bottom:none;padding:14px 20px 4px;}
  .spec-table tbody th{background:var(--c-bg-alt);padding:14px 20px 10px;margin-bottom:6px;}
  .spec-table tbody td{padding:4px 20px 16px;}
  .spec-table tbody tr:hover td{background:transparent;}
}

/* ---------- 能力卡 ---------- */
.cap-card{
  height:100%;display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px;
  box-shadow:var(--sh-1);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.cap-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:#D8D1C4;}
.cap-icon{
  width:48px;height:48px;border-radius:12px;background:var(--c-primary-tint);color:var(--c-primary);
  display:grid;place-items:center;margin-bottom:20px;transition:color .24s ease,background-color .24s ease;
}
.cap-card:hover .cap-icon{color:var(--c-accent);background:#F6E7DE;}
.cap-card h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.cap-card p{font-size:15px;color:var(--c-text-2);margin-bottom:20px;max-width:100%;}
.cap-card .btn-link-arrow{margin-top:auto;}

/* ---------- 深色指标条 ---------- */
.promise-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.promise-item{padding:6px 32px;border-left:1px solid rgba(255,255,255,.18);}
.promise-item:first-child{border-left:none;padding-left:0;}
.promise-num{font-family:var(--font-serif);font-size:44px;line-height:1.1;color:#fff;display:block;}
.promise-lbl{font-size:14px;color:rgba(255,255,255,.7);margin-top:10px;display:block;}
@media (max-width:991.98px){
  .promise-grid{grid-template-columns:repeat(2,1fr);gap:36px 0;}
  .promise-item:nth-child(odd){border-left:none;padding-left:0;}
  .promise-item:nth-child(3),.promise-item:nth-child(4){}
  .promise-num{font-size:34px;}
}
@media (max-width:575.98px){
  .promise-item{padding:0 16px;}
  .promise-num{font-size:28px;}
  .promise-lbl{font-size:13px;}
}

/* ---------- FAQ ---------- */
.faq-aside{position:sticky;top:104px;}
.faq-aside h2{font-family:var(--font-serif);font-size:30px;padding-left:18px;position:relative;margin-bottom:16px;}
.faq-aside h2::before{content:"";position:absolute;left:0;top:.2em;width:4px;height:.86em;background:var(--c-primary);border-radius:2px;}
.faq-aside p{font-size:15px;color:var(--c-text-2);margin-bottom:20px;}
.faq-acc .accordion-item{background:transparent;border:none;border-bottom:1px solid var(--c-line);border-radius:0;}
.faq-acc .accordion-button{
  background:transparent;box-shadow:none;border:none;border-radius:0;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--c-text);
  display:flex;align-items:flex-start;gap:14px;width:100%;text-align:left;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--c-primary);background:transparent;box-shadow:none;}
.faq-acc .accordion-button::after{display:none;}
.faq-acc .accordion-button:focus{box-shadow:none;}
.faq-num{font-family:var(--font-serif);color:var(--c-accent);font-size:17px;line-height:1.6;flex:none;}
.faq-q{flex:1;}
.faq-sign{flex:none;font-size:22px;line-height:1.4;color:var(--c-primary);width:22px;text-align:center;}
.faq-acc .accordion-button.collapsed .faq-sign::before{content:"+";}
.faq-acc .accordion-button:not(.collapsed) .faq-sign::before{content:"−";}
.faq-acc .accordion-body{padding:0 0 24px 36px;font-size:15px;line-height:1.9;color:var(--c-text-2);}
.faq-acc .accordion-body p{margin-bottom:.8em;max-width:680px;}
.faq-acc .accordion-body p:last-child{margin-bottom:0;}

/* ---------- 相关分类 ---------- */
.rel-card{
  display:flex;height:100%;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);}
.rel-card img{width:150px;height:100%;min-height:150px;object-fit:cover;flex:none;}
.rel-card-body{padding:24px 26px;display:flex;flex-direction:column;}
.rel-card-body h3{font-size:19px;font-weight:600;margin-bottom:8px;}
.rel-card-body p{font-size:14.5px;color:var(--c-text-2);margin-bottom:16px;max-width:100%;}
.rel-card-body .btn-link-arrow{margin-top:auto;font-size:14.5px;}
@media (max-width:575.98px){
  .rel-card{flex-direction:column;}
  .rel-card img{width:100%;height:180px;min-height:0;}
}

/* ---------- CTA 横条 ---------- */
.cta-bar{background:var(--c-primary-deep);padding:58px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-family:var(--font-serif);font-size:27px;color:#fff;font-weight:600;line-height:1.4;}
.cta-inner p{margin:10px 0 0;color:rgba(255,255,255,.72);font-size:15px;max-width:560px;}
@media (max-width:767.98px){
  .cta-bar{padding:44px 0;}
  .cta-inner h2{font-size:22px;}
  .cta-inner .btn-white{width:100%;}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-deep);color:rgba(255,255,255,.75);padding:72px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;
  padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-col + .footer-col{border-left:1px solid rgba(255,255,255,.12);padding-left:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{border-color:rgba(255,255,255,.55);color:#fff;}
.footer-brand .brand-mark:hover{}
.footer-brand strong{color:#fff;font-size:18px;font-weight:600;}
.footer-col p{font-size:14px;color:rgba(255,255,255,.68);line-height:1.9;max-width:320px;margin:0;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.02em;}
.footer-links li{margin-bottom:12px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);display:inline-block;transition:color .2s ease,transform .2s ease;}
.footer-links a:hover{color:var(--c-accent);transform:translateX(4px);}
.footer-info li{display:flex;align-items:flex-start;gap:10px;font-size:14px;margin-bottom:14px;color:rgba(255,255,255,.72);}
.footer-info li:last-child{margin-bottom:0;}
.footer-info svg{stroke:rgba(255,255,255,.6);flex:none;margin-top:4px;}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  padding:24px 0 30px;font-size:13px;color:rgba(255,255,255,.5);
}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .footer-col + .footer-col{border-left:none;padding-left:0;}
  .footer-col:nth-child(3){border-left:1px solid rgba(255,255,255,.12);padding-left:36px;}
}
@media (max-width:575.98px){
  .site-footer{padding-top:56px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px;}
  .footer-col:nth-child(3){border-left:none;padding-left:0;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* ---------- 响应式板块间距 ---------- */
@media (max-width:991.98px){
  .section{padding:72px 0;}
  .sec-title{font-size:28px;}
  .sec-head{margin-bottom:36px;}
}
@media (max-width:575.98px){
  .section{padding:56px 0;}
  .sec-title{font-size:24px;}
  .sec-desc{font-size:15px;}
  .cap-card{padding:22px;}
  .spec-table th,.spec-table td{font-size:15px;}
  .faq-aside h2{font-size:24px;}
}