/* roulang page: index */
:root{
  --c-primary:#1B5E5A;
  --c-primary-deep:#0E3D3A;
  --c-primary-soft:#DCEBE7;
  --c-accent:#D9793F;
  --c-accent-soft:#FBEADF;
  --c-ink:#1C2321;
  --c-ink-2:#55615E;
  --c-line:#E2E5DF;
  --c-bg:#F7F6F2;
  --c-surface:#FFFFFF;
  --c-surface-2:#F0F2EE;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,40,38,.06);
  --sh-2:0 10px 28px rgba(16,40,38,.08);
  --sh-3:0 18px 48px rgba(16,40,38,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:220ms var(--ease);
  --nav-h:72px;
  --cloud:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='260' height='130' viewBox='0 0 260 130'%3E%3Cg fill='none' stroke='%23FFFFFF' stroke-width='2'%3E%3Cpath d='M0 100c32 0 32-26 65-26s33 26 65 26 33-26 65-26 33 26 65 26'/%3E%3Cpath d='M0 46c32 0 32-26 65-26s33 26 65 26 33-26 65-26 33 26 65 26'/%3E%3C/g%3E%3C/svg%3E");
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  padding-bottom:68px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{font-weight:800;letter-spacing:-0.01em;line-height:1.28;}
input,textarea,select{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--alt{background:var(--c-surface);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.sec-title{position:relative;padding-left:18px;font-size:clamp(24px,3.2vw,34px);}
.sec-title::before{content:"";position:absolute;left:0;top:.28em;bottom:.22em;width:4px;background:var(--c-primary);border-radius:2px;}
.sec-title::after{content:"";position:absolute;left:-1px;top:-14px;width:16px;height:16px;background:var(--c-primary);border-radius:2px;opacity:.16;}
.sec-sub{margin-top:12px;color:var(--c-ink-2);font-size:16px;max-width:640px;}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:.16em;color:var(--c-accent);font-weight:700;margin-bottom:12px;text-transform:uppercase;}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:700;font-size:15px;transition:var(--t);}
.link-more span{transition:transform var(--t);}
.link-more:hover{color:var(--c-primary-deep);}
.link-more:hover span{transform:translateX(4px);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);font-size:15.5px;font-weight:700;
  transition:var(--t);white-space:nowrap;
}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn--primary:hover{background:var(--c-primary-deep);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn--ghost{border:1.5px solid var(--c-primary);color:var(--c-primary);background:transparent;}
.btn--ghost:hover{background:var(--c-primary-soft);transform:translateY(-2px);}
.btn--light{background:#fff;color:var(--c-primary-deep);}
.btn--light:hover{background:var(--c-primary-soft);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn--outline-light{border:1.5px solid rgba(255,255,255,.7);color:#fff;}
.btn--outline-light:hover{background:rgba(255,255,255,.14);transform:translateY(-2px);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none!important;}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:700;letter-spacing:.02em;
}
.badge--accent{background:var(--c-accent-soft);color:#A8541F;}

/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(247,246,242,.55);
  -webkit-backdrop-filter:blur(14px) saturate(1.4);
  backdrop-filter:blur(14px) saturate(1.4);
  border-bottom:1px solid rgba(255,255,255,.35);
  box-shadow:var(--sh-2);
  transition:background var(--t),border-color var(--t),box-shadow var(--t);
}
.site-header.is-stuck{
  background:#FFFFFF;
  border-bottom-color:var(--c-line);
  box-shadow:0 6px 20px rgba(16,40,38,.07);
}
.nav-inner{
  height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:-.01em;color:var(--c-ink);}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(150deg,var(--c-primary),var(--c-primary-deep));
  display:flex;align-items:center;justify-content:center;color:#fff;
  box-shadow:var(--sh-1);
}
.logo-mark svg{width:20px;height:20px;}
.logo-text small{display:block;font-size:11px;font-weight:500;color:var(--c-ink-2);letter-spacing:.08em;}
.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-menu a{
  position:relative;display:block;padding:10px 14px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;color:var(--c-ink);transition:color var(--t);
}
.nav-menu a::after{
  content:"";position:absolute;left:50%;bottom:4px;height:2px;width:0;
  background:var(--c-primary);border-radius:2px;transform:translateX(-50%);
  transition:width var(--t);
}
.nav-menu a:hover{color:var(--c-primary);}
.nav-menu a:hover::after{width:calc(100% - 28px);}
.nav-menu a.is-active{color:var(--c-primary);}
.nav-menu a.is-active::after{width:calc(100% - 28px);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:rgba(255,255,255,.7);
  display:flex;align-items:center;justify-content:center;color:var(--c-ink);
  transition:var(--t);
}
.icon-btn:hover{background:var(--c-primary-soft);border-color:var(--c-primary);color:var(--c-primary);}
.icon-btn svg{width:18px;height:18px;}
.nav-cta{padding:11px 22px;font-size:15px;}
.burger{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border:1px solid var(--c-line);background:rgba(255,255,255,.8);
}
.burger i{display:block;width:20px;height:2px;background:var(--c-primary);border-radius:2px;transition:var(--t);}
.burger.is-open i:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger.is-open i:nth-child(2){opacity:0;}
.burger.is-open i:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* 移动抽屉 */
.mobile-panel{
  position:fixed;inset:var(--nav-h) 0 0 0;z-index:79;
  background:var(--c-surface);
  transform:translateY(-12px);opacity:0;visibility:hidden;
  transition:opacity var(--t),transform var(--t),visibility var(--t);
  display:flex;flex-direction:column;padding:20px 24px 32px;overflow-y:auto;
}
.mobile-panel.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.mobile-panel a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;font-size:16.5px;font-weight:600;color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
}
.mobile-panel a.is-active{color:var(--c-primary);}
.mobile-panel .btn{margin-top:24px;width:100%;}
body.no-scroll{overflow:hidden;}

/* Hero */
.hero{
  position:relative;
  min-height:560px;height:88vh;
  display:flex;align-items:center;
  color:#fff;overflow:hidden;
  background:#0E3D3A url("/assets/images/backpic/back-1.png") center/cover no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,61,58,.82) 0%,rgba(14,61,58,.66) 45%,rgba(14,61,58,.86) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:var(--cloud);background-size:520px auto;opacity:.06;
}
.hero-inner{position:relative;z-index:2;padding-top:var(--nav-h);width:100%;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  font-size:13px;font-weight:600;letter-spacing:.04em;margin-bottom:22px;
}
.hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--c-accent);display:block;}
.hero h1{
  font-size:clamp(32px,5vw,56px);
  max-width:900px;
  margin-bottom:20px;
  text-shadow:0 2px 20px rgba(0,0,0,.18);
}
.hero-lede{
  font-size:clamp(16px,1.6vw,19px);
  color:rgba(255,255,255,.88);
  max-width:620px;margin-bottom:32px;
}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;}
.hero-stats{
  position:relative;z-index:2;
  margin-top:56px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:2px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);
  border-radius:var(--r-md);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  overflow:hidden;
}
.hero-stat{padding:22px 24px;background:rgba(255,255,255,.05);}
.hero-stat b{display:block;font-size:clamp(22px,2.6vw,30px);font-weight:800;color:var(--c-accent);letter-spacing:-.02em;}
.hero-stat span{font-size:13.5px;color:rgba(255,255,255,.82);}

/* 卖点错落 */
.feature-grid{
  display:grid;
  grid-template-columns:1.35fr 1fr;
  grid-template-rows:auto auto;
  gap:24px;
}
.feature-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:32px;box-shadow:var(--sh-1);
  transition:var(--t);position:relative;overflow:hidden;
}
.feature-card:hover{border-color:rgba(27,94,90,.35);box-shadow:var(--sh-2);transform:translateY(-4px);}
.feature-card--lead{grid-row:1 / span 2;display:flex;flex-direction:column;justify-content:space-between;background:linear-gradient(160deg,#FFFFFF 0%,#F2F6F3 100%);}
.feature-icon{
  width:46px;height:46px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);margin-bottom:20px;
}
.feature-icon svg{width:22px;height:22px;}
.feature-card h3{font-size:20px;margin-bottom:12px;}
.feature-card p{color:var(--c-ink-2);font-size:15.5px;margin-bottom:10px;}
.feature-card--lead h3{font-size:24px;}
.feature-card--lead .feature-figure{
  margin-top:24px;border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/10;background:var(--c-surface-2);
}
.feature-card--lead .feature-figure img{width:100%;height:100%;object-fit:cover;}

/* 场景交替 */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.scene + .scene{margin-top:88px;}
.scene-media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:16/10;background:var(--c-surface-2);}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.scene:hover .scene-media img{transform:scale(1.03);}
.scene-body h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:16px;}
.scene-body p{color:var(--c-ink-2);margin-bottom:14px;}
.scene-list{margin-top:22px;display:grid;gap:12px;}
.scene-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--c-ink);}
.scene-list li::before{
  content:"";flex:0 0 auto;width:10px;height:10px;margin-top:7px;
  background:var(--c-primary-soft);border:2px solid var(--c-primary);border-radius:2px;
}
.scene--reverse .scene-media{order:2;}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);
  transition:var(--t);height:100%;
}
.news-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);border-color:rgba(27,94,90,.35);}
.news-thumb{aspect-ratio:16/10;background:var(--c-surface-2);overflow:hidden;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-body h3{font-size:18px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{
  color:var(--c-ink-2);font-size:14.5px;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:14px;border-top:1px solid var(--c-line);
  font-size:13.5px;color:var(--c-ink-2);
}
.news-foot b{color:var(--c-primary);font-weight:700;}

/* 空态与骨架 */
.empty-state{
  grid-column:1 / -1;
  text-align:center;padding:56px 24px;
  background:var(--c-surface);border:1px dashed var(--c-line);border-radius:var(--r-md);
}
.empty-state svg{width:40px;height:40px;color:var(--c-ink-2);margin:0 auto 14px;}
.empty-state p{color:var(--c-ink-2);font-size:15px;margin-bottom:18px;}

/* 社会认同 */
.logo-wall{
  display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-bottom:48px;
}
.logo-chip{
  height:72px;border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:var(--c-surface);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;color:#8C9694;letter-spacing:.04em;
  filter:grayscale(1);transition:var(--t);
}
.logo-chip:hover{filter:grayscale(0);color:var(--c-primary);border-color:rgba(27,94,90,.35);}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.quote-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:28px;box-shadow:var(--sh-1);transition:var(--t);position:relative;
}
.quote-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);}
.quote-card::before{
  content:"“";position:absolute;top:6px;right:22px;
  font-size:64px;line-height:1;color:var(--c-primary-soft);font-family:Georgia,serif;
}
.quote-card p{font-size:15.5px;color:var(--c-ink);margin-bottom:18px;position:relative;z-index:1;}
.quote-meta{font-size:13.5px;color:var(--c-ink-2);}
.quote-meta b{color:var(--c-ink);}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);box-shadow:var(--sh-1);transition:var(--t);
}
.faq-item:hover{border-color:rgba(27,94,90,.3);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:60px;padding:16px 24px;font-size:16px;font-weight:700;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:17px;font-weight:700;line-height:1;transition:var(--t);
}
.faq-item[open] summary::after{content:"×";transform:rotate(180deg);}
.faq-item[open]{border-color:rgba(27,94,90,.35);}
.faq-answer{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--c-ink-2);}

/* CTA */
.cta-block{
  position:relative;overflow:hidden;
  background:linear-gradient(150deg,var(--c-primary) 0%,var(--c-primary-deep) 100%);
  border-radius:var(--r-lg);padding:64px 56px;color:#fff;
}
.cta-block::after{
  content:"";position:absolute;inset:0;
  background-image:var(--cloud);background-size:460px auto;opacity:.05;
}
.cta-inner{position:relative;z-index:2;max-width:720px;}
.cta-block h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px;}
.cta-block p{color:rgba(255,255,255,.85);font-size:16px;margin-bottom:30px;}
.cta-btns{display:flex;gap:14px;flex-wrap:wrap;}

/* 页脚 */
.site-footer{background:var(--c-surface);border-top:1px solid var(--c-line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14.5px;color:var(--c-ink-2);max-width:320px;}
.footer-col h4{font-size:15px;margin-bottom:18px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14.5px;color:var(--c-ink-2);transition:var(--t);}
.footer-col a:hover{color:var(--c-primary);padding-left:4px;}
.footer-contact li{font-size:14.5px;color:var(--c-ink-2);}
.footer-contact b{color:var(--c-ink);font-weight:700;}
.footer-bottom{
  border-top:1px solid var(--c-line);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--c-ink-2);
}
.footer-bottom a{color:var(--c-ink-2);}
.footer-bottom a:hover{color:var(--c-primary);}

/* 底部转化条 */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(14px) saturate(1.4);
  backdrop-filter:blur(14px) saturate(1.4);
  border-top:1px solid var(--c-line);
  box-shadow:0 -6px 24px rgba(16,40,38,.08);
}
.sticky-inner{
  height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.sticky-text{font-size:14.5px;font-weight:600;color:var(--c-ink);}
.sticky-actions{display:flex;align-items:center;gap:12px;}
.sticky-link{font-size:14px;color:var(--c-primary);font-weight:700;}
.sticky-close{
  width:32px;height:32px;border-radius:50%;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;color:var(--c-ink-2);
  font-size:16px;line-height:1;transition:var(--t);
}
.sticky-close:hover{background:var(--c-surface-2);color:var(--c-ink);}
.sticky-bar.is-hidden{transform:translateY(110%);opacity:0;pointer-events:none;}
.sticky-bar{transition:transform var(--t),opacity var(--t);}
.sticky-text--mobile{display:none;}

/* 响应式 */
@media (min-width:1400px){
  .container{max-width:1260px;}
}
@media (max-width:1200px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-contact{grid-column:1 / -1;}
}
@media (max-width:992px){
  .section{padding:64px 0;}
  .hero{height:auto;padding:120px 0 64px;min-height:0;}
  .hero-stats{margin-top:40px;grid-template-columns:repeat(4,1fr);}
  .feature-grid{grid-template-columns:1fr;}
  .feature-card--lead{grid-row:auto;}
  .scene{grid-template-columns:1fr;gap:28px;}
  .scene--reverse .scene-media{order:0;}
  .scene + .scene{margin-top:56px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .logo-wall{grid-template-columns:repeat(3,1fr);}
  .quote-grid{grid-template-columns:1fr;}
  .cta-block{padding:48px 32px;}
}
@media (max-width:768px){
  body{padding-bottom:64px;}
  .nav-menu,.nav-actions .nav-cta,.nav-actions .icon-btn{display:none;}
  .burger{display:flex;}
  .hero{padding:104px 0 56px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .hero-stat{padding:18px 20px;}
  .section{padding:56px 0;}
  .sec-head{margin-bottom:28px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .faq-item summary{padding:14px 18px;font-size:15.5px;}
  .faq-answer{padding:0 18px 18px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .sticky-text{display:none;}
  .sticky-text--mobile{display:block;font-size:14px;font-weight:700;color:var(--c-ink);}
}
@media (max-width:560px){
  .container{padding:0 18px;}
  body{font-size:16px;}
  .hero-tag{font-size:12px;}
  .hero-btns .btn{width:100%;}
  .hero-stats{grid-template-columns:1fr 1fr;}
  .news-grid{grid-template-columns:1fr;}
  .logo-wall{grid-template-columns:repeat(2,1fr);}
  .cta-btns .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-block{padding:40px 22px;border-radius:var(--r-md);}
  .sticky-inner{height:60px;}
  .sticky-actions .btn{padding:11px 18px;font-size:14.5px;}
  .sticky-link{display:none;}
}

/* roulang page: article */
:root{
  --c-primary:#1B5E5A;
  --c-primary-deep:#0E3D3A;
  --c-primary-soft:#DCEBE7;
  --c-accent:#D9793F;
  --c-accent-soft:#FBEADF;
  --c-ink:#1C2321;
  --c-ink-2:#55615E;
  --c-line:#E2E5DF;
  --c-bg:#F7F6F2;
  --c-surface:#FFFFFF;
  --c-surface-2:#F0F2EE;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,40,38,.06);
  --sh-2:0 10px 28px rgba(16,40,38,.08);
  --sh-3:0 18px 48px rgba(16,40,38,.12);
  --sp-section:88px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--c-primary-deep);}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.3;color:var(--c-ink);}
p{margin:0;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);border:1.5px solid transparent;
  font-weight:700;font-size:15px;line-height:1;white-space:nowrap;
  transition:all .22s var(--ease);cursor:pointer;
}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn--primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:transparent;color:var(--c-primary);border-color:rgba(27,94,90,.45);}
.btn--ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);border-color:var(--c-primary);}
.btn--light{background:#fff;color:var(--c-primary-deep);}
.btn--light:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);transform:translateY(-2px);}
.btn--outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.btn--outline-light:hover{background:rgba(255,255,255,.14);color:#fff;}
.btn--sm{padding:10px 20px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:700;padding:4px 12px;border-radius:var(--r-pill);
  letter-spacing:.02em;
}
.badge--accent{background:var(--c-accent-soft);color:var(--c-accent);}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background:rgba(247,246,242,.55);
  backdrop-filter:blur(14px) saturate(1.4);
  -webkit-backdrop-filter:blur(14px) saturate(1.4);
  border-bottom:1px solid rgba(255,255,255,.35);
  box-shadow:var(--sh-2);
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-stuck{background:#FFFFFF;border-bottom-color:var(--c-line);box-shadow:0 6px 20px rgba(16,40,38,.07);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);}
.logo:hover{color:var(--c-primary);}
.logo-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);
}
.logo-mark svg{width:22px;height:22px;}
.logo-text{display:flex;flex-direction:column;font-weight:800;font-size:17px;line-height:1.15;letter-spacing:-.01em;}
.logo-text small{font-weight:500;font-size:11px;color:var(--c-ink-2);letter-spacing:.06em;}
.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-menu a{
  position:relative;display:block;padding:8px 14px;font-size:15px;font-weight:600;
  color:var(--c-ink);border-radius:var(--r-sm);
}
.nav-menu a::after{
  content:"";position:absolute;left:50%;bottom:2px;width:0;height:2px;
  background:var(--c-primary);transform:translateX(-50%);
  transition:width .22s var(--ease);
}
.nav-menu a:hover{color:var(--c-primary);}
.nav-menu a:hover::after{width:calc(100% - 28px);}
.nav-menu a.is-active{color:var(--c-primary);}
.nav-menu a.is-active::after{width:calc(100% - 28px);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--c-line);
  background:rgba(255,255,255,.7);color:var(--c-ink);
  display:inline-flex;align-items:center;justify-content:center;
  transition:all .22s var(--ease);
}
.icon-btn svg{width:19px;height:19px;}
.icon-btn:hover{border-color:var(--c-primary);color:var(--c-primary);background:#fff;}
.burger{display:none;width:42px;height:42px;border:1px solid var(--c-line);border-radius:var(--r-sm);background:#fff;padding:0;}
.burger i{display:block;width:18px;height:2px;margin:4px auto;background:var(--c-primary);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease);}

/* ============ 页面头部 ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:150px 0 64px;
  background:linear-gradient(120deg,rgba(14,61,58,.92),rgba(27,94,90,.86)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#fff;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle at 18% 28%,rgba(255,255,255,.16) 0 2px,transparent 2px),radial-gradient(circle at 62% 12%,rgba(255,255,255,.12) 0 3px,transparent 3px),radial-gradient(circle at 84% 62%,rgba(255,255,255,.1) 0 2px,transparent 2px);
  opacity:.5;
}
.page-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.75);margin-bottom:22px;}
.crumbs a{color:rgba(255,255,255,.82);}
.crumbs a:hover{color:#fff;}
.crumbs .sep{opacity:.55;}
.crumbs .current{color:rgba(255,255,255,.95);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.page-hero h1{
  color:#fff;font-size:clamp(28px,4vw,46px);max-width:900px;margin-bottom:20px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:14px;color:rgba(255,255,255,.84);}
.meta-row .badge{background:rgba(255,255,255,.16);color:#fff;}
.meta-item{display:inline-flex;align-items:center;gap:6px;}
.meta-item::before{content:"";width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.55);}

/* ============ 文章主体 ============ */
.main-section{padding:var(--sp-section) 0;}
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px) 260px;
  gap:56px;justify-content:center;align-items:start;
}
.article-panel{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:48px 52px;
}
.article-body{font-size:17px;line-height:1.9;color:#2A322F;}
.article-body>*+*{margin-top:1.2em;}
.article-body h2{
  position:relative;font-size:24px;line-height:1.45;padding-left:16px;margin-top:1.9em;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.35em;width:4px;height:1.1em;
  background:var(--c-primary);border-radius:2px;
}
.article-body h3{font-size:19px;margin-top:1.6em;color:var(--c-primary-deep);}
.article-body p{font-size:17px;}
.article-body strong{color:var(--c-primary-deep);}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.article-body a:hover{color:var(--c-accent);}
.article-body ul,.article-body ol{margin:1.2em 0;padding-left:4px;}
.article-body li{position:relative;padding-left:22px;margin:.5em 0;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--c-primary);
}
.article-body ol{counter-reset:item;}
.article-body ol li::before{
  counter-increment:item;content:counter(item);
  position:absolute;left:0;top:.35em;width:18px;height:18px;border-radius:50%;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:11px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.article-body blockquote{
  margin:1.5em 0;padding:18px 22px;background:var(--c-surface-2);
  border-left:4px solid var(--c-accent);border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--c-ink-2);font-size:16px;line-height:1.8;
}
.article-body blockquote p{margin:0;font-size:16px;}
.article-body img{margin:1.6em auto;border-radius:var(--r-md);box-shadow:var(--sh-1);}
.article-body figure{margin:1.6em 0;text-align:center;}
.article-body figcaption{font-size:13px;color:var(--c-ink-2);margin-top:10px;text-align:center;}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:12px 14px;text-align:left;}
.article-body th{background:var(--c-primary-soft);color:var(--c-primary-deep);font-weight:700;}
.article-body tbody tr:nth-child(even){background:#FAFBF9;}
.article-body hr{border:none;border-top:1px solid var(--c-line);margin:2.2em 0;}

/* 侧栏 */
.article-aside{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px;}
.aside-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--sh-1);
}
.aside-card h3{font-size:15px;letter-spacing:.06em;color:var(--c-ink-2);margin-bottom:14px;text-transform:uppercase;}
.aside-list li+li{margin-top:10px;}
.aside-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:15px;font-weight:600;color:var(--c-ink);}
.aside-list a::after{content:"→";color:var(--c-accent);transition:transform .22s var(--ease);}
.aside-list a:hover{color:var(--c-primary);}
.aside-list a:hover::after{transform:translateX(4px);}
.aside-note p{font-size:14px;color:var(--c-ink-2);line-height:1.85;}
.aside-note p+p{margin-top:10px;}

/* 空状态 */
.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--c-line);
  border-radius:var(--r-md);background:var(--c-surface-2);
}
.empty-state svg{width:40px;height:40px;color:var(--c-ink-2);margin:0 auto 16px;}
.empty-state p{font-size:15px;color:var(--c-ink-2);margin-bottom:20px;}

/* 上一篇/下一篇 */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:36px;}
.post-nav-item{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:22px 24px;box-shadow:var(--sh-1);
  transition:all .22s var(--ease);
}
.post-nav-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(27,94,90,.3);}
.post-nav-item span{display:block;font-size:13px;color:var(--c-ink-2);margin-bottom:8px;}
.post-nav-item strong{display:block;font-size:16px;color:var(--c-ink);font-weight:700;
  overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
.post-nav-item.is-disabled{opacity:.5;cursor:not-allowed;background:var(--c-surface-2);}
.post-nav-item.is-disabled:hover{transform:none;box-shadow:var(--sh-1);border-color:var(--c-line);}
.post-nav-item--next{text-align:right;}

/* 文章尾部动作 */
.article-foot{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;margin-top:40px;padding-top:28px;border-top:1px solid var(--c-line);}

/* 继续浏览 */
.related-section{padding:0 0 var(--sp-section);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:34px;}
.section-head h2{font-size:clamp(22px,3vw,30px);position:relative;padding-left:16px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;width:4px;height:22px;background:var(--c-primary);border-radius:2px;
}
.section-head p{font-size:15px;color:var(--c-ink-2);margin-top:8px;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.related-card{
  display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;
  box-shadow:var(--sh-1);transition:all .22s var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(27,94,90,.3);}
.related-thumb{position:relative;aspect-ratio:16/10;background:var(--c-surface-2);overflow:hidden;}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.related-card:hover .related-thumb img{transform:scale(1.04);}
.related-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.related-body h3{font-size:18px;}
.related-body p{font-size:14px;color:var(--c-ink-2);line-height:1.8;flex:1;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--c-primary);}
.text-link::after{content:"→";transition:transform .22s var(--ease);}
.text-link:hover::after{transform:translateX(4px);}

/* CTA 大块 */
.cta-block{
  position:relative;overflow:hidden;padding:72px 0;
  background:linear-gradient(135deg,var(--c-primary-deep),#17605B);
  color:#fff;
}
.cta-block::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:radial-gradient(circle at 20% 30%,#fff 0 40px,transparent 41px),radial-gradient(circle at 75% 70%,#fff 0 60px,transparent 61px);
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;}
.cta-inner h2{color:#fff;font-size:clamp(22px,3vw,32px);margin-bottom:12px;}
.cta-inner p{color:rgba(255,255,255,.82);font-size:16px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-surface);border-top:1px solid var(--c-line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;}
.footer-brand p{font-size:14px;color:var(--c-ink-2);line-height:1.85;margin-top:18px;max-width:340px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--c-ink);}
.footer-col ul li+li{margin-top:10px;}
.footer-col a{font-size:14px;color:var(--c-ink-2);}
.footer-col a:hover{color:var(--c-primary);}
.footer-contact li{font-size:14px;color:var(--c-ink-2);}
.footer-contact b{color:var(--c-ink);font-weight:600;}
.footer-bottom{
  margin-top:52px;border-top:1px solid var(--c-line);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--c-ink-2);
}
.footer-bottom a{color:var(--c-ink-2);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom a:hover{color:var(--c-primary);}

/* 底部转化条 */
.conversion-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:110;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 20px;height:60px;
  background:rgba(255,255,255,.86);backdrop-filter:blur(14px);
  border-top:1px solid var(--c-line);box-shadow:0 -6px 20px rgba(16,40,38,.06);
  transform:translateY(110%);transition:transform .3s var(--ease);
}
.conversion-bar.is-visible{transform:translateY(0);}
.conversion-bar .bar-text{font-size:14px;font-weight:600;color:var(--c-ink);}
.conversion-bar .bar-side{display:flex;align-items:center;gap:12px;}
.bar-close{
  width:34px;height:34px;border-radius:var(--r-pill);border:1px solid var(--c-line);
  background:#fff;color:var(--c-ink-2);font-size:16px;line-height:1;
  display:none;align-items:center;justify-content:center;
}
.conversion-bar.is-desk .bar-close{display:inline-flex;}

.to-top{
  position:fixed;right:22px;bottom:84px;z-index:105;
  width:46px;height:46px;border-radius:var(--r-pill);border:1px solid var(--c-line);
  background:#fff;color:var(--c-primary);box-shadow:var(--sh-2);
  display:inline-flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transition:all .22s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;}
.to-top:hover{background:var(--c-primary);color:#fff;transform:translateY(-2px);}
.to-top svg{width:18px;height:18px;}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .article-layout{grid-template-columns:minmax(0,720px) 240px;gap:36px;}
  .article-panel{padding:40px;}
}
@media (max-width:992px){
  :root{--sp-section:64px;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-aside{position:static;flex-direction:row;flex-wrap:wrap;}
  .aside-card{flex:1 1 240px;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  :root{--sp-section:56px;}
  body{padding-bottom:60px;}
  .nav-menu{
    position:fixed;top:76px;left:0;right:0;display:none;flex-direction:column;align-items:stretch;
    background:var(--c-surface);padding:12px 18px 24px;gap:2px;
    border-bottom:1px solid var(--c-line);box-shadow:var(--sh-2);
    max-height:calc(100vh - 76px);overflow:auto;
  }
  body.nav-open .nav-menu{display:flex;}
  body.nav-open{overflow:hidden;}
  .nav-menu a{padding:0 12px;height:52px;line-height:52px;font-size:16px;border-radius:var(--r-sm);}
  .nav-menu a::after{display:none;}
  .nav-menu a.is-active{background:var(--c-primary-soft);}
  .burger{display:block;}
  .nav-cta{display:none;}
  .page-hero{padding:120px 0 48px;}
  .crumbs .current{max-width:200px;}
  .article-panel{padding:28px 22px;border-radius:var(--r-md);}
  .article-body{font-size:16px;}
  .article-body p{font-size:16px;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav-item--next{text-align:left;}
  .related-grid{grid-template-columns:1fr;}
  .cta-block{padding:56px 0;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:560px){
  .container{padding:0 18px;}
  .logo-text{font-size:15px;}
  .logo-text small{font-size:10px;}
  .btn{padding:13px 22px;font-size:14px;}
  .cta-actions .btn,.article-foot .btn{width:100%;}
  .cta-actions{width:100%;}
  .article-foot{flex-direction:column;align-items:stretch;}
  .meta-row{font-size:13px;gap:10px;}
  .conversion-bar{height:60px;padding:0 14px;}
  .conversion-bar .bar-text{font-size:13px;}
  .to-top{bottom:76px;right:14px;}
}
@media (min-width:1400px){
  .container{max-width:1240px;}
  .article-layout{grid-template-columns:minmax(0,780px) 280px;gap:64px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#1B5E5A;
  --c-primary-deep:#0E3D3A;
  --c-primary-soft:#DCEBE7;
  --c-accent:#D9793F;
  --c-accent-soft:#FBEADF;
  --c-ink:#1C2321;
  --c-ink-2:#55615E;
  --c-line:#E2E5DF;
  --c-bg:#F7F6F2;
  --c-surface:#FFFFFF;
  --c-surface-2:#F0F2EE;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,40,38,.06);
  --sh-2:0 10px 28px rgba(16,40,38,.08);
  --sh-3:0 18px 48px rgba(16,40,38,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:220ms var(--ease);
  --nav-h:74px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --cloud:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='70' viewBox='0 0 140 70'%3E%3Cpath d='M12 48c0-9 8-16 17-15 3-9 12-15 22-13 9-9 25-6 29 5 10-1 19 6 19 16' fill='none' stroke='%23FFFFFF' stroke-width='2'/%3E%3C/svg%3E");
}
*,*::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:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:var(--t)}
a:hover{color:var(--c-primary-deep)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;color:var(--c-ink);line-height:1.25}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
svg{display:block}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:4px}

/* ============ 容器 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  background:rgba(247,246,242,.55);
  -webkit-backdrop-filter:blur(14px) saturate(1.4);
  backdrop-filter:blur(14px) saturate(1.4);
  border-bottom:1px solid rgba(255,255,255,.35);
  box-shadow:var(--sh-2);
  transition:background var(--t),border-color var(--t),box-shadow var(--t),color var(--t);
}
.site-header.is-stuck{
  background:#FFFFFF;
  border-bottom-color:var(--c-line);
  box-shadow:0 6px 20px rgba(16,40,38,.08);
}
.nav-inner{
  height:var(--nav-h);
  display:flex;
  align-items:center;
  gap:20px;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--c-ink);
  flex:0 0 auto;
}
.logo:hover{color:var(--c-primary-deep)}
.logo-mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:10px;
  background:var(--c-primary);
  color:#fff;
  flex:0 0 auto;
}
.logo-mark svg{width:22px;height:22px}
.logo-text{
  display:flex;
  flex-direction:column;
  font-size:17px;
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.2;
}
.logo-text small{
  font-size:11px;
  font-weight:500;
  color:var(--c-ink-2);
  letter-spacing:.08em;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-menu > a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 14px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  color:var(--c-ink);
  white-space:nowrap;
  transition:var(--t);
}
.nav-menu > a::after{
  content:"";
  position:absolute;
  left:50%;right:50%;
  bottom:4px;
  height:2px;
  background:var(--c-primary);
  border-radius:2px;
  transition:left var(--t),right var(--t);
}
.nav-menu > a:hover{color:var(--c-primary)}
.nav-menu > a:hover::after{left:16px;right:16px}
.nav-menu > a.is-active{color:var(--c-primary)}
.nav-menu > a.is-active::after{left:16px;right:16px}
.nav-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
}
.icon-btn{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  color:var(--c-ink);
  cursor:pointer;
  transition:var(--t);
}
.icon-btn svg{width:18px;height:18px}
.icon-btn:hover{border-color:var(--c-primary);color:var(--c-primary);box-shadow:var(--sh-1)}
.burger{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--c-line);
  border-radius:12px;
  background:var(--c-surface);
  cursor:pointer;
  padding:0;
  place-items:center;
  gap:4px;
  flex-direction:column;
}
.burger i{
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--c-primary);
  transition:var(--t);
}
.burger[aria-expanded="true"] i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded="true"] i:nth-child(2){opacity:0}
.burger[aria-expanded="true"] i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-drawer-cta{display:none}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1.5px solid transparent;
  cursor:pointer;
  text-align:center;
  transition:var(--t);
  white-space:nowrap;
}
.btn--primary{background:var(--c-primary);color:#fff}
.btn--primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn--primary:active{transform:translateY(0);box-shadow:none}
.btn--outline{border-color:var(--c-primary);color:var(--c-primary);background:transparent}
.btn--outline:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);transform:translateY(-2px)}
.btn--ghost{border-color:rgba(255,255,255,.55);color:#fff;background:transparent}
.btn--ghost:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px)}
.btn--light{background:#fff;color:var(--c-primary-deep)}
.btn--light:hover{background:#fff;color:var(--c-primary-deep);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn--sm{padding:11px 20px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:700;
  color:var(--c-primary);
}
.text-link span{transition:transform var(--t)}
.text-link:hover span{transform:translateX(4px)}

.badge{
  display:inline-flex;
  align-items:center;
  padding:4px 10px;
  border-radius:var(--r-pill);
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:12px;
  font-weight:700;
  letter-spacing:.02em;
}
.badge--accent{background:var(--c-accent-soft);color:#A9541F}

/* ============ 分类页 Hero ============ */
.cat-hero{
  position:relative;
  min-height:48vh;
  display:flex;
  align-items:flex-end;
  padding:calc(var(--nav-h) + 76px) 0 58px;
  background:var(--c-primary-deep) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color:#fff;
  overflow:hidden;
}
.cat-hero::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(14,61,58,.92) 0%,rgba(27,94,90,.72) 55%,rgba(14,61,58,.66) 100%);
}
.cat-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:var(--cloud);
  background-repeat:repeat;
  opacity:.05;
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.78);
  margin-bottom:18px;
}
.breadcrumb a{color:rgba(255,255,255,.9)}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.breadcrumb i{font-style:normal;opacity:.6}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.24);
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
  margin-bottom:18px;
}
.cat-hero h1{
  font-size:clamp(30px,4.4vw,48px);
  color:#fff;
  max-width:900px;
  margin-bottom:16px;
}
.cat-hero h1 em{font-style:normal;color:#F0C9A8}
.hero-lead{
  max-width:720px;
  font-size:18px;
  line-height:1.8;
  color:rgba(255,255,255,.86);
  margin-bottom:26px;
}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:14px 34px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.18);
}
.hero-facts div{display:flex;align-items:baseline;gap:8px;font-size:14px;color:rgba(255,255,255,.82)}
.hero-facts b{font-size:22px;font-weight:800;color:#F0C9A8;font-variant-numeric:tabular-nums}

/* ============ 锚点导航 ============ */
.anchor-nav{
  position:sticky;
  top:var(--nav-h);
  z-index:60;
  background:rgba(247,246,242,.86);
  -webkit-backdrop-filter:blur(12px) saturate(1.3);
  backdrop-filter:blur(12px) saturate(1.3);
  border-bottom:1px solid var(--c-line);
}
.anchor-nav ul{
  display:flex;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
  padding:10px 0;
}
.anchor-nav ul::-webkit-scrollbar{display:none}
.anchor-nav a{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 16px;
  border-radius:var(--r-pill);
  font-size:14px;
  font-weight:600;
  color:var(--c-ink-2);
  white-space:nowrap;
  transition:var(--t);
}
.anchor-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary)}

/* ============ 板块 ============ */
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--surface{background:var(--c-surface)}
.section--soft{background:var(--c-surface-2)}
.section-head{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:14px;
}
.stamp{
  width:16px;height:16px;
  border-radius:2px;
  background:var(--c-primary);
  flex:0 0 auto;
}
.section-title{
  font-size:clamp(24px,3.2vw,34px);
  letter-spacing:-.01em;
}
.section-sub{
  max-width:760px;
  font-size:16px;
  color:var(--c-ink-2);
  margin-bottom:44px;
}
.divider{height:1px;background:var(--c-line);border:0;margin:0}

/* ============ 图文交替长内容流 ============ */
.alt-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
  padding:56px 0;
  border-bottom:1px solid var(--c-line);
  scroll-margin-top:calc(var(--nav-h) + 70px);
}
.alt-row:first-of-type{padding-top:8px}
.alt-row:last-of-type{border-bottom:0;padding-bottom:8px}
.alt-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-2);
  background:var(--c-surface-2);
  aspect-ratio:16/10;
}
.alt-media img{width:100%;height:100%;object-fit:cover}
.alt-media figcaption{
  position:absolute;
  left:16px;bottom:16px;
  padding:6px 12px;
  border-radius:var(--r-pill);
  background:rgba(14,61,58,.78);
  color:#fff;
  font-size:12px;
  letter-spacing:.02em;
}
.alt-body h2{
  font-size:clamp(22px,2.6vw,30px);
  margin:14px 0 16px;
}
.alt-body p{color:var(--c-ink-2);font-size:16.5px;line-height:1.85}
.alt-row--reverse .alt-media{order:2}
.alt-row--reverse .alt-body{order:1}

.point-list{
  margin:22px 0 24px;
  display:grid;
  gap:12px;
}
.point-list li{
  position:relative;
  padding-left:22px;
  font-size:15.5px;
  color:var(--c-ink);
  line-height:1.7;
}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:9px;height:9px;
  border-radius:2px;
  background:var(--c-primary);
}
.point-list li b{color:var(--c-primary-deep)}

/* ============ 数据带 ============ */
.stat-band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.stat-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  padding:26px 24px;
  transition:var(--t);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(27,94,90,.3)}
.stat-num{
  font-size:34px;
  font-weight:800;
  color:var(--c-accent);
  font-variant-numeric:tabular-nums;
  line-height:1.1;
  margin-bottom:6px;
}
.stat-num small{font-size:15px;font-weight:700;margin-left:4px;color:var(--c-ink-2)}
.stat-card h3{font-size:16px;margin-bottom:6px}
.stat-card p{font-size:14px;color:var(--c-ink-2);margin:0;line-height:1.7}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px}
.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:var(--t);
}
.faq-item:hover{border-color:rgba(27,94,90,.3)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:62px;
  padding:16px 24px;
  font-size:16px;
  font-weight:700;
  color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";
  width:14px;height:14px;
  flex:0 0 auto;
  background-image:linear-gradient(currentColor,currentColor),linear-gradient(currentColor,currentColor);
  background-position:center center,center center;
  background-size:14px 2px,2px 14px;
  background-repeat:no-repeat;
  color:var(--c-primary);
  transition:var(--t);
}
.faq-item[open] summary::after{background-size:14px 2px,2px 0}
.faq-item[open] summary{color:var(--c-primary-deep)}
.faq-answer{
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.8;
  color:var(--c-ink-2);
  border-top:1px solid var(--c-line);
  padding-top:16px;
}

/* ============ CTA ============ */
.cta-block{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  background:linear-gradient(135deg,var(--c-primary-deep) 0%,var(--c-primary) 100%);
  color:#fff;
  padding:64px 56px;
  box-shadow:var(--sh-3);
}
.cta-block::after{
  content:"";
  position:absolute;inset:0;
  background-image:var(--cloud);
  background-repeat:repeat;
  opacity:.05;
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;max-width:720px}
.cta-block h2{color:#fff;font-size:clamp(24px,3vw,34px);margin-bottom:14px}
.cta-block p{color:rgba(255,255,255,.84);font-size:16.5px;margin-bottom:28px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-note{margin-top:20px;font-size:13.5px;color:rgba(255,255,255,.72)}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-surface);
  border-top:1px solid var(--c-line);
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid var(--c-line);
}
.footer-brand p{
  margin-top:18px;
  font-size:14.5px;
  color:var(--c-ink-2);
  line-height:1.8;
  max-width:340px;
}
.footer-col h4{
  font-size:15px;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col ul{display:grid;gap:10px}
.footer-col a{
  font-size:14.5px;
  color:var(--c-ink-2);
}
.footer-col a:hover{color:var(--c-primary)}
.footer-contact li{font-size:14.5px;color:var(--c-ink-2)}
.footer-contact b{color:var(--c-ink);font-weight:700}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  justify-content:space-between;
  align-items:center;
  padding-top:22px;
  font-size:13px;
  color:var(--c-ink-2);
}
.footer-bottom a{color:var(--c-ink-2);text-decoration:underline;text-underline-offset:3px}
.footer-bottom a:hover{color:var(--c-primary)}

/* ============ 底部固定转化条 ============ */
.sticky-cta{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:80;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-top:1px solid var(--c-line);
  box-shadow:0 -8px 24px rgba(16,40,38,.08);
  transform:translateY(120%);
  transition:transform var(--t);
}
.sticky-cta.is-visible{transform:translateY(0)}
.sticky-inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:68px;
  padding-top:10px;
  padding-bottom:10px;
}
.sticky-text{font-size:14.5px;font-weight:700;color:var(--c-ink)}
.sticky-side{margin-left:auto;display:flex;align-items:center;gap:16px}
.sticky-close{
  width:34px;height:34px;
  border-radius:50%;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  color:var(--c-ink-2);
  cursor:pointer;
  font-size:16px;
  line-height:1;
  display:grid;place-items:center;
  transition:var(--t);
}
.sticky-close:hover{border-color:var(--c-primary);color:var(--c-primary)}

/* ============ 响应式 ============ */
@media (min-width:1400px){
  .container{max-width:1240px}
  .cta-block{padding:76px 72px}
}
@media (max-width:1200px){
  .nav-menu > a{padding:0 10px;font-size:14.5px}
}
@media (max-width:992px){
  body{font-size:16px}
  .section{padding:64px 0}
  .alt-row{grid-template-columns:1fr;gap:28px;padding:40px 0}
  .alt-row--reverse .alt-media{order:0}
  .alt-row--reverse .alt-body{order:0}
  .stat-band{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-block{padding:48px 32px}
  .nav-menu{display:none}
  .nav-menu.is-open{
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    position:fixed;
    top:var(--nav-h);left:0;right:0;bottom:0;
    margin:0;
    padding:8px 24px 110px;
    background:var(--c-surface);
    overflow-y:auto;
    box-shadow:var(--sh-3);
  }
  .nav-menu.is-open > a{
    height:52px;
    border-radius:0;
    border-bottom:1px solid var(--c-line);
    padding:0;
    font-size:16px;
    justify-content:flex-start;
  }
  .nav-menu.is-open > a::after{display:none}
  .nav-menu.is-open > a.is-active{color:var(--c-primary);background:var(--c-primary-soft);padding-left:12px}
  .nav-menu.is-open .nav-drawer-cta{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    margin-top:24px;
    height:50px;
    border:0;
    border-radius:var(--r-pill);
    background:var(--c-primary);
    color:#fff;
    font-weight:700;
    padding:0;
  }
  .nav-menu.is-open .nav-drawer-cta:hover{background:var(--c-primary-deep);color:#fff}
  .burger{display:flex}
  .nav-cta{display:none}
  .icon-btn{display:none}
}
@media (max-width:768px){
  :root{--nav-h:64px}
  .section{padding:56px 0}
  .section-sub{margin-bottom:32px}
  .cat-hero{padding:calc(var(--nav-h) + 56px) 0 44px;min-height:42vh}
  .hero-lead{font-size:16.5px}
  .hero-facts{gap:12px 24px;padding-top:18px}
  .hero-facts b{font-size:19px}
  .alt-row{padding:32px 0;scroll-margin-top:calc(var(--nav-h) + 62px)}
  .faq-item summary{padding:14px 18px;font-size:15.5px}
  .faq-answer{padding:14px 18px 20px}
  .sticky-inner{min-height:60px;gap:12px;padding-top:8px;padding-bottom:8px}
  .sticky-text{font-size:13.5px}
  .sticky-cta .btn--sm{padding:10px 18px;font-size:13.5px}
  .sticky-close{display:none}
  body{padding-bottom:74px}
}
@media (max-width:560px){
  .container{padding:0 18px}
  .cat-hero h1{font-size:clamp(26px,7vw,32px)}
  .hero-lead{font-size:15.5px}
  .hero-facts{display:grid;grid-template-columns:1fr 1fr;gap:12px}
  .stat-band{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta-block{padding:36px 22px;border-radius:var(--r-md)}
  .cta-actions{flex-direction:column;align-items:stretch}
  .cta-actions .btn{width:100%}
  .anchor-nav a{height:34px;padding:0 12px;font-size:13px}
  .point-list li{font-size:15px}
  .sticky-text{max-width:96px;line-height:1.4}
  .sticky-side{margin-left:auto;gap:8px}
}

/* roulang page: category2 */
:root{
  --c-primary:#1B5E5A;
  --c-primary-deep:#0E3D3A;
  --c-primary-soft:#DCEBE7;
  --c-accent:#D9793F;
  --c-accent-soft:#FBEADF;
  --c-ink:#1C2321;
  --c-ink-2:#55615E;
  --c-line:#E2E5DF;
  --c-bg:#F7F6F2;
  --c-surface:#FFFFFF;
  --c-surface-2:#F0F2EE;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,40,38,.06);
  --sh-2:0 10px 28px rgba(16,40,38,.08);
  --sh-3:0 18px 48px rgba(16,40,38,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:220ms cubic-bezier(.22,.61,.36,1);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --nav-h:72px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  padding-bottom:96px;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--c-primary-deep);}
ul,ol{margin:0;padding:0;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.28;}
p{margin:0;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:4px;}
body.no-scroll{overflow:hidden;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);border:1.5px solid transparent;
  font-size:15px;font-weight:700;letter-spacing:.01em;line-height:1;
  transition:background var(--t),color var(--t),box-shadow var(--t),transform var(--t),border-color var(--t);
  white-space:nowrap;
}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn--primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);}
.btn--outline{border-color:var(--c-primary);color:var(--c-primary);background:transparent;}
.btn--outline:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);}
.btn--light{background:#fff;color:var(--c-primary-deep);box-shadow:var(--sh-2);}
.btn--light:hover{background:var(--c-accent-soft);color:var(--c-primary-deep);transform:translateY(-2px);}
.btn--ghost-light{border-color:rgba(255,255,255,.6);color:#fff;background:rgba(255,255,255,.06);}
.btn--ghost-light:hover{background:rgba(255,255,255,.16);color:#fff;border-color:#fff;}
.btn:disabled,.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

.link-arrow{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  color:var(--c-primary);font-weight:700;font-size:14px;
}
.link-arrow svg{width:16px;height:16px;transition:transform var(--t);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(247,246,242,.55);
  backdrop-filter:blur(14px) saturate(1.4);
  -webkit-backdrop-filter:blur(14px) saturate(1.4);
  border-bottom:1px solid rgba(255,255,255,.35);
  box-shadow:var(--sh-2);
  transition:background var(--t),border-color var(--t),box-shadow var(--t);
}
.site-header.is-stuck{background:#fff;border-bottom-color:var(--c-line);box-shadow:var(--sh-1);}
.nav-inner{display:flex;align-items:center;gap:28px;min-height:var(--nav-h);}

.logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);flex:0 0 auto;}
.logo:hover{color:var(--c-ink);}
.logo-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:11px;
  background:var(--c-primary);color:#fff;display:grid;place-items:center;
  box-shadow:0 6px 16px rgba(16,40,38,.18);
}
.logo-mark svg{width:20px;height:20px;}
.logo-text{display:flex;flex-direction:column;font-weight:800;font-size:16px;line-height:1.18;letter-spacing:-.01em;}
.logo-text small{font-weight:500;font-size:11px;color:var(--c-ink-2);letter-spacing:.08em;}

.nav-menu{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-menu a{
  position:relative;padding:10px 14px;font-size:15px;font-weight:600;color:var(--c-ink-2);
  border-radius:var(--r-sm);
}
.nav-menu a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:4px;height:2px;border-radius:2px;
  background:var(--c-primary);transition:left var(--t),right var(--t);
}
.nav-menu a:hover{color:var(--c-primary);}
.nav-menu a:hover::after{left:14px;right:14px;}
.nav-menu a.is-active{color:var(--c-primary);}
.nav-menu a.is-active::after{left:14px;right:14px;}

.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--c-line);
  background:rgba(255,255,255,.7);color:var(--c-ink-2);display:grid;place-items:center;
  transition:background var(--t),color var(--t),border-color var(--t);
}
.icon-btn svg{width:19px;height:19px;}
.icon-btn:hover{background:#fff;color:var(--c-primary);border-color:var(--c-primary-soft);}

.nav-cta{padding:12px 22px;font-size:14px;}

.burger{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);border:1px solid var(--c-line);
  background:rgba(255,255,255,.8);padding:0;place-items:center;gap:5px;flex-direction:column;
}
.burger i{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-primary);transition:transform var(--t),opacity var(--t);}
.burger[aria-expanded="true"] i:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger[aria-expanded="true"] i:nth-child(2){opacity:0;}
.burger[aria-expanded="true"] i:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mobile-panel{
  position:fixed;left:0;right:0;top:64px;bottom:0;z-index:99;
  background:var(--c-surface);padding:16px 24px 24px;
  transform:translateX(102%);transition:transform 280ms var(--ease);
  display:none;flex-direction:column;
}
.mobile-panel.is-open{transform:translateX(0);}
.mobile-panel a{
  display:flex;align-items:center;min-height:52px;font-size:16px;font-weight:600;
  color:var(--c-ink);border-bottom:1px solid var(--c-line);
}
.mobile-panel a.is-active{color:var(--c-primary);}
.mobile-panel .btn{margin-top:auto;width:100%;}

/* ---------- Hero ---------- */
.hero{
  position:relative;isolation:isolate;overflow:hidden;
  min-height:520px;
  display:flex;align-items:flex-end;
  padding:calc(var(--nav-h) + 64px) 0 64px;
  background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  color:#fff;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(14,61,58,.82) 0%,rgba(14,61,58,.66) 55%,rgba(14,61,58,.78) 100%);
}
.cloud-pattern{position:absolute;z-index:-1;right:-60px;bottom:-40px;width:620px;opacity:.07;color:#fff;pointer-events:none;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--c-accent-soft);margin-bottom:18px;
}
.hero-eyebrow::before{content:"";width:22px;height:2px;background:var(--c-accent);border-radius:2px;}
.hero h1{
  font-size:clamp(32px,5vw,52px);
  max-width:16em;
  text-shadow:0 2px 18px rgba(0,0,0,.22);
}
.hero-lead{
  margin-top:18px;max-width:640px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.88);
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px;}

/* ---------- 锚点导航 ---------- */
.anchor-bar{
  position:sticky;top:var(--nav-h);z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
}
.anchor-inner{display:flex;gap:8px;overflow-x:auto;padding:10px 0;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner a{
  white-space:nowrap;padding:8px 16px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;color:var(--c-ink-2);background:transparent;
  transition:background var(--t),color var(--t);
}
.anchor-inner a:hover{background:var(--c-primary-soft);color:var(--c-primary);}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--alt{background:var(--c-surface-2);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{
  position:relative;padding-left:20px;
  font-size:clamp(24px,3.2vw,34px);
  margin-bottom:14px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.22em;width:4px;height:1em;border-radius:2px;background:var(--c-primary);
}
.section-head h2::after{
  content:"";position:absolute;left:0;top:calc(.22em + 1.4em);width:16px;height:16px;border-radius:2px;background:var(--c-accent);
}
.section-head p{font-size:16px;color:var(--c-ink-2);line-height:1.8;}

/* ---------- 指标带 ---------- */
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.metric-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);padding:28px 24px;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(27,94,90,.3);}
.metric-num{font-size:clamp(28px,3.4vw,36px);font-weight:800;color:var(--c-accent);letter-spacing:-.02em;line-height:1.1;}
.metric-title{font-size:15px;font-weight:700;margin-top:12px;}
.metric-desc{font-size:14px;color:var(--c-ink-2);margin-top:6px;line-height:1.65;}

/* ---------- 功能卡片网格 ---------- */
.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.service-card{
  display:flex;flex-direction:column;gap:14px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);padding:30px 28px;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(27,94,90,.3);}
.service-icon{
  width:46px;height:46px;border-radius:12px;background:var(--c-primary-soft);color:var(--c-primary);
  display:grid;place-items:center;
}
.service-icon svg{width:22px;height:22px;}
.service-card h3{font-size:20px;}
.service-card p{font-size:15px;color:var(--c-ink-2);line-height:1.75;}
.badge{
  display:inline-block;padding:4px 10px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:700;letter-spacing:.02em;
}

/* ---------- 图文核对区 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split-media{
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);
  aspect-ratio:16/11;background:var(--c-surface-2);
}
.split-media img{width:100%;height:100%;object-fit:cover;}
.split-body h2{font-size:clamp(24px,3.2vw,32px);margin-bottom:16px;}
.split-body p{font-size:16px;color:var(--c-ink-2);line-height:1.85;margin-bottom:14px;}
.checklist{list-style:none;margin-top:22px;display:grid;gap:14px;}
.checklist li{position:relative;padding-left:26px;font-size:15.5px;color:var(--c-ink-2);line-height:1.7;}
.checklist li::before{
  content:"";position:absolute;left:0;top:.58em;width:10px;height:10px;border-radius:2px;background:var(--c-primary);
}

/* ---------- 疑问速览 ---------- */
.qa-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.qa-card{
  background:var(--c-surface-2);border:1px solid transparent;border-radius:var(--r-md);
  padding:28px 26px;transition:background var(--t),border-color var(--t),transform var(--t);
}
.qa-card:hover{background:#fff;border-color:var(--c-line);transform:translateY(-3px);}
.qa-card h3{font-size:17px;margin-bottom:10px;}
.qa-card p{font-size:15px;color:var(--c-ink-2);line-height:1.78;}

/* ---------- CTA ---------- */
.cta-block{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(135deg,var(--c-primary-deep) 0%,var(--c-primary) 100%);
  color:#fff;padding:72px 48px;text-align:center;
}
.cta-block::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  opacity:.16;mix-blend-mode:luminosity;
}
.cta-inner{position:relative;z-index:1;}
.cta-block h2{font-size:clamp(22px,3vw,32px);color:#fff;margin-bottom:14px;}
.cta-block p{max-width:600px;margin:0 auto 30px;font-size:16px;color:rgba(255,255,255,.86);line-height:1.8;}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;background:var(--c-surface);border-top:1px solid var(--c-line);
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand p{margin-top:16px;font-size:14.5px;color:var(--c-ink-2);line-height:1.85;max-width:360px;}
.footer-col h4{font-size:15px;margin-bottom:16px;}
.footer-col ul{list-style:none;display:grid;gap:10px;}
.footer-col li{font-size:14.5px;color:var(--c-ink-2);}
.footer-col a{color:var(--c-ink-2);}
.footer-col a:hover{color:var(--c-primary);}
.footer-contact b{color:var(--c-ink);font-weight:700;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--c-line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--c-ink-2);
}

/* ---------- 底部转化条 ---------- */
.sticky-cta{
  position:fixed;left:50%;bottom:18px;z-index:95;
  width:min(1120px,calc(100% - 32px));
  transform:translate(-50%,150%);
  display:flex;align-items:center;gap:16px;
  padding:12px 14px 12px 26px;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1px solid var(--c-line);border-radius:var(--r-pill);box-shadow:var(--sh-3);
  transition:transform 320ms var(--ease);
}
.sticky-cta.is-visible{transform:translate(-50%,0);}
.sticky-text{font-size:14.5px;font-weight:700;color:var(--c-ink);}
.sticky-text span{display:block;font-size:12.5px;font-weight:500;color:var(--c-ink-2);}
.sticky-cta .btn{margin-left:auto;padding:12px 24px;font-size:14px;}
.sticky-close{
  width:34px;height:34px;border-radius:var(--r-pill);border:1px solid var(--c-line);
  background:#fff;color:var(--c-ink-2);font-size:16px;line-height:1;display:grid;place-items:center;
  transition:background var(--t),color var(--t);
}
.sticky-close:hover{background:var(--c-surface-2);color:var(--c-ink);}

/* ---------- 响应式 ---------- */
@media (min-width:1400px){
  .container{max-width:1240px;}
}
@media (max-width:1200px){
  .nav-menu a{padding:10px 10px;font-size:14.5px;}
}
@media (max-width:992px){
  .section{padding:64px 0;}
  .metrics-grid{grid-template-columns:repeat(2,1fr);}
  .cards-grid{grid-template-columns:repeat(2,1fr);}
  .qa-grid{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split-media{order:-1;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .nav-menu{display:none;}
  .burger{display:flex;}
  .mobile-panel{display:flex;}
  .nav-cta{display:none;}
}
@media (max-width:768px){
  :root{--nav-h:64px;}
  body{padding-bottom:76px;font-size:15.5px;}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .hero{min-height:440px;padding:calc(var(--nav-h) + 48px) 0 48px;}
  .hero-lead{font-size:15.5px;}
  .anchor-bar{top:var(--nav-h);}
  .service-card{padding:24px 22px;}
  .metric-card{padding:22px 20px;}
  .cta-block{padding:52px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding:48px 0 24px;}
  .sticky-cta{
    left:0;bottom:0;width:100%;border-radius:16px 16px 0 0;
    transform:translateY(120%);padding:10px 14px;
  }
  .sticky-cta.is-visible{transform:translateY(0);}
  .sticky-cta .btn{padding:11px 18px;}
  .sticky-text{font-size:13.5px;}
  .sticky-text span{display:none;}
}
@media (max-width:560px){
  .container{padding:0 18px;}
  .hero h1{font-size:clamp(26px,7vw,34px);}
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .metrics-grid{grid-template-columns:1fr;gap:16px;}
  .cards-grid{grid-template-columns:1fr;gap:18px;}
  .button-row .btn{width:100%;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: category3 */
:root{
  --c-primary:#1B5E5A;
  --c-primary-deep:#0E3D3A;
  --c-primary-soft:#DCEBE7;
  --c-accent:#D9793F;
  --c-accent-soft:#FBEADF;
  --c-ink:#1C2321;
  --c-ink-2:#55615E;
  --c-line:#E2E5DF;
  --c-bg:#F7F6F2;
  --c-surface:#FFFFFF;
  --c-surface-2:#F0F2EE;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,40,38,.06);
  --sh-2:0 10px 28px rgba(16,40,38,.08);
  --sh-3:0 18px 48px rgba(16,40,38,.12);
  --nav-h:74px;
  --ease:220ms cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  padding-bottom:0;
  overflow-x:hidden;
}
h1,h2,h3,h4{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-weight:700;
  letter-spacing:-0.01em;
  line-height:1.28;
  margin:0;
}
p{margin:0;}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease);}
img{display:block;max-width:100%;height:auto;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
input,textarea{font:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:200;
  background:rgba(247,246,242,.55);
  -webkit-backdrop-filter:blur(14px) saturate(1.4);
  backdrop-filter:blur(14px) saturate(1.4);
  border-bottom:1px solid rgba(255,255,255,.35);
  box-shadow:var(--sh-2);
  transition:background-color var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.site-header.is-stuck{
  background:#FFFFFF;
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-1);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:var(--nav-h);
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;height:36px;
  border-radius:10px;
  background:var(--c-primary);
  color:#fff;
  box-shadow:var(--sh-1);
}
.logo-mark svg{width:21px;height:21px;}
.logo-text{
  display:flex;
  flex-direction:column;
  font-size:17px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--c-ink);
  line-height:1.15;
}
.logo-text small{
  font-size:11px;
  font-weight:500;
  letter-spacing:.06em;
  color:var(--c-ink-2);
  margin-top:3px;
}
.nav-menu{display:flex;align-items:center;gap:28px;}
.nav-menu a{
  position:relative;
  font-size:15.5px;
  font-weight:500;
  color:var(--c-ink);
  padding:6px 0;
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:50%;bottom:0;
  width:0;height:2px;
  background:var(--c-primary);
  border-radius:2px;
  transform:translateX(-50%);
  transition:width var(--ease);
}
.nav-menu a:hover{color:var(--c-primary);}
.nav-menu a:hover::after{width:100%;}
.nav-menu a.is-active{color:var(--c-primary);font-weight:700;}
.nav-menu a.is-active::after{width:100%;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;height:40px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:rgba(255,255,255,.72);
  color:var(--c-primary);
  transition:background-color var(--ease),border-color var(--ease),transform var(--ease);
}
.icon-btn svg{width:18px;height:18px;}
.icon-btn:hover{background:#fff;border-color:var(--c-primary);transform:translateY(-2px);}
.burger{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:42px;height:42px;
  border-radius:var(--r-sm);
  border:1px solid var(--c-line);
  background:rgba(255,255,255,.8);
}
.burger i{display:block;width:20px;height:2px;margin:0 auto;background:var(--c-primary);border-radius:2px;transition:transform var(--ease),opacity var(--ease);}
.burger.is-open i:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger.is-open i:nth-child(2){opacity:0;}
.burger.is-open i:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:var(--r-pill);
  font-size:15.5px;
  font-weight:600;
  letter-spacing:.01em;
  white-space:nowrap;
  transition:background-color var(--ease),color var(--ease),box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn--primary:hover{background:var(--c-primary-deep);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{border:1.5px solid var(--c-primary);color:var(--c-primary);background:transparent;}
.btn--ghost:hover{background:var(--c-primary-soft);transform:translateY(-2px);}
.btn--light{background:#fff;color:var(--c-primary-deep);box-shadow:var(--sh-2);}
.btn--light:hover{background:var(--c-primary-soft);transform:translateY(-2px);}
.btn--outline-light{border:1.5px solid rgba(255,255,255,.65);color:#fff;}
.btn--outline-light:hover{background:rgba(255,255,255,.14);transform:translateY(-2px);}
.btn--sm{padding:10px 20px;font-size:14.5px;}
.nav-cta{padding:11px 22px;font-size:14.5px;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--c-primary);
}
.link-arrow span.arrow{transition:transform var(--ease);}
.link-arrow:hover span.arrow{transform:translateX(4px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:var(--r-pill);
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.04em;
}
.badge--accent{background:var(--c-accent-soft);color:#A9552A;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  min-height:400px;
  height:46vh;
  display:flex;
  align-items:flex-end;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(14,61,58,.86) 0%,rgba(27,94,90,.66) 55%,rgba(14,61,58,.78) 100%);
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background:
    radial-gradient(120% 90% at 12% 8%,rgba(255,255,255,.09) 0,transparent 60%),
    radial-gradient(90% 70% at 88% 92%,rgba(255,255,255,.07) 0,transparent 62%);
  pointer-events:none;
}
.hero-content{
  position:relative;
  z-index:2;
  padding:calc(var(--nav-h) + 48px) 0 56px;
  max-width:760px;
  color:#fff;
}
.hero-content .badge{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.3);}
.hero-content h1{
  font-size:clamp(30px,4.4vw,48px);
  margin:18px 0 16px;
  color:#fff;
}
.hero-lead{
  font-size:clamp(16px,1.4vw,18.5px);
  line-height:1.7;
  color:rgba(255,255,255,.86);
  max-width:620px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:12px 22px;
  margin-top:26px;
  font-size:14px;
  color:rgba(255,255,255,.78);
}
.hero-meta b{color:#fff;font-weight:700;}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;
  top:var(--nav-h);
  z-index:120;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
}
.anchor-inner{
  display:flex;
  align-items:center;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
  padding:10px 0;
}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner a{
  flex:0 0 auto;
  padding:8px 16px;
  border-radius:var(--r-pill);
  font-size:14.5px;
  font-weight:600;
  color:var(--c-ink-2);
  border:1px solid transparent;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease);
}
.anchor-inner a:hover{background:var(--c-primary-soft);color:var(--c-primary);border-color:var(--c-primary-soft);}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--surface{background:var(--c-surface);}
.section--soft{background:var(--c-surface-2);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:44px;
}
.section-head .title-wrap{padding-left:16px;position:relative;}
.section-head .title-wrap::before{
  content:"";
  position:absolute;
  left:0;top:4px;
  width:4px;height:calc(100% - 8px);
  border-radius:2px;
  background:var(--c-primary);
}
.section-head .title-wrap::after{
  content:"";
  position:absolute;
  left:8px;top:-6px;
  width:14px;height:14px;
  border-radius:2px;
  background:var(--c-accent);
  opacity:.75;
}
.eyebrow{
  display:block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--c-primary);
  margin-bottom:10px;
  padding-left:16px;
}
.section-head h2{font-size:clamp(24px,3.1vw,34px);}
.section-head p{
  max-width:520px;
  color:var(--c-ink-2);
  font-size:15.5px;
  margin-top:12px;
  padding-left:16px;
}

/* ---------- 时间线 ---------- */
.timeline{position:relative;max-width:900px;padding-left:12px;}
.timeline::before{
  content:"";
  position:absolute;
  left:34px;top:12px;bottom:12px;
  width:2px;
  background:linear-gradient(180deg,var(--c-primary) 0%,rgba(27,94,90,.22) 100%);
  border-radius:2px;
}
.tl-item{
  position:relative;
  padding-left:84px;
  padding-bottom:40px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-num{
  position:absolute;
  left:12px;top:0;
  display:flex;
  align-items:center;
  justify-content:center;
  width:46px;height:46px;
  border-radius:50%;
  background:var(--c-primary);
  color:#fff;
  font-size:16px;
  font-weight:800;
  box-shadow:0 0 0 6px var(--c-bg),var(--sh-2);
  letter-spacing:.02em;
}
.tl-item .badge{margin-bottom:10px;}
.tl-item h3{font-size:20px;margin-bottom:8px;}
.tl-item p{color:var(--c-ink-2);font-size:15.5px;max-width:620px;}
.tl-item .tl-tip{
  margin-top:12px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--c-primary);
  background:var(--c-primary-soft);
  border-radius:var(--r-pill);
  padding:5px 14px;
  font-weight:600;
}

/* ---------- 图文分栏 ---------- */
.split{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:48px;
  align-items:center;
}
.split-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-2);
  background:var(--c-surface-2);
  aspect-ratio:16/10;
}
.split-media img{width:100%;height:100%;object-fit:cover;}
.prep-list li{
  position:relative;
  padding-left:28px;
  margin-bottom:14px;
  color:var(--c-ink-2);
  font-size:15.5px;
}
.prep-list li::before{
  content:"";
  position:absolute;
  left:0;top:10px;
  width:10px;height:10px;
  border-radius:2px;
  background:var(--c-primary);
}
.prep-list li b{color:var(--c-ink);font-weight:700;}

/* ---------- 对比表 ---------- */
.table-wrap{
  overflow-x:auto;
  border-radius:var(--r-md);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  box-shadow:var(--sh-1);
}
table.compare{
  width:100%;
  min-width:660px;
  border-collapse:collapse;
  font-size:15px;
}
table.compare thead th{
  background:var(--c-primary-soft);
  color:var(--c-primary-deep);
  text-align:left;
  font-size:14px;
  font-weight:700;
  letter-spacing:.03em;
  padding:16px 20px;
  border-bottom:1px solid rgba(27,94,90,.16);
}
table.compare td{
  padding:16px 20px;
  border-bottom:1px solid var(--c-line);
  color:var(--c-ink-2);
  vertical-align:top;
}
table.compare tbody tr:nth-child(even){background:#FAFBF8;}
table.compare tbody tr:last-child td{border-bottom:0;}
table.compare td strong{display:block;color:var(--c-ink);font-weight:700;margin-bottom:2px;font-size:15.5px;}
table.compare td .badge{margin-top:2px;}

/* ---------- 指标小带 ---------- */
.metrics{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  margin-top:40px;
}
.metric{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(27,94,90,.3);}
.metric b{
  display:block;
  font-size:32px;
  line-height:1.1;
  font-weight:800;
  color:var(--c-accent);
  letter-spacing:-.02em;
}
.metric span{display:block;margin-top:8px;font-size:14px;color:var(--c-ink-2);}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;display:grid;gap:12px;}
.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:box-shadow var(--ease),border-color var(--ease);
}
.faq-item[open]{border-color:rgba(27,94,90,.32);box-shadow:var(--sh-2);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:62px;
  padding:16px 24px;
  font-size:16px;
  font-weight:700;
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .mark{
  position:relative;
  flex:0 0 auto;
  width:22px;height:22px;
  border-radius:50%;
  background:var(--c-primary-soft);
}
.faq-item summary .mark::before,
.faq-item summary .mark::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:10px;height:2px;
  background:var(--c-primary);
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform var(--ease),opacity var(--ease);
}
.faq-item summary .mark::after{transform:translate(-50%,-50%) rotate(90deg);}
.faq-item[open] summary .mark::after{transform:translate(-50%,-50%) rotate(0);opacity:0;}
.faq-item .faq-body{
  padding:0 24px 22px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--c-ink-2);
  border-top:1px solid var(--c-line);
  padding-top:18px;
  margin:0 24px 0;
  padding-left:0;padding-right:0;
}

/* ---------- CTA ---------- */
.cta-block{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  background:linear-gradient(135deg,var(--c-primary-deep) 0%,var(--c-primary) 100%);
  color:#fff;
  padding:64px 56px;
  box-shadow:var(--sh-3);
}
.cta-block::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(80% 120% at 88% 10%,rgba(255,255,255,.12) 0,transparent 58%),
    radial-gradient(70% 100% at 6% 96%,rgba(255,255,255,.08) 0,transparent 60%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;max-width:720px;}
.cta-block h2{font-size:clamp(24px,3.2vw,34px);color:#fff;}
.cta-block p{margin-top:14px;font-size:16px;color:rgba(255,255,255,.84);max-width:600px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.cta-note{
  margin-top:22px;
  font-size:13.5px;
  color:rgba(255,255,255,.7);
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-surface);
  border-top:1px solid var(--c-line);
  padding:72px 0 0;
  margin-top:88px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand p{
  margin-top:18px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--c-ink-2);
  max-width:340px;
}
.footer-col h4{
  font-size:14px;
  letter-spacing:.1em;
  color:var(--c-ink);
  margin-bottom:18px;
}
.footer-col ul{display:grid;gap:12px;}
.footer-col li{font-size:14.5px;color:var(--c-ink-2);}
.footer-col a{color:var(--c-ink-2);}
.footer-col a:hover{color:var(--c-primary);}
.footer-contact b{color:var(--c-ink);font-weight:700;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  border-top:1px solid var(--c-line);
  padding:22px 0 26px;
  font-size:13px;
  color:var(--c-ink-2);
}
.footer-bottom a{color:var(--c-primary);}
.footer-bottom a:hover{text-decoration:underline;}

/* ---------- 底部转化条 ---------- */
.sticky-bar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:190;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-top:1px solid var(--c-line);
  box-shadow:0 -6px 22px rgba(16,40,38,.08);
  transform:translateY(110%);
  transition:transform 320ms cubic-bezier(.22,.61,.36,1);
}
.sticky-bar.is-visible{transform:translateY(0);}
.sticky-bar.is-closed{display:none;}
.sticky-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:68px;
}
.sticky-text{font-size:14.5px;color:var(--c-ink-2);display:flex;align-items:center;gap:10px;}
.sticky-text b{color:var(--c-ink);font-weight:700;}
.sticky-actions{display:flex;align-items:center;gap:14px;}
.sticky-close{
  width:32px;height:32px;
  border-radius:50%;
  border:1px solid var(--c-line);
  color:var(--c-ink-2);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  line-height:1;
  transition:background-color var(--ease),color var(--ease);
}
.sticky-close:hover{background:var(--c-surface-2);color:var(--c-ink);}

/* ---------- 响应式 ---------- */
@media (max-width:1400px){
  .container{max-width:1200px;}
}
@media (max-width:1200px){
  .section{padding:76px 0;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-contact{grid-column:span 3;}
  .footer-contact ul{display:flex;flex-wrap:wrap;gap:24px;}
}
@media (max-width:992px){
  .nav-menu{display:none;}
  .burger{display:flex;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split-media{order:-1;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .section-head p{max-width:none;}
  .cta-block{padding:48px 32px;}
}
@media (max-width:768px){
  :root{--nav-h:66px;}
  body{font-size:16px;}
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
  .nav-cta{display:none;}
  .nav-menu{
    position:fixed;
    inset:var(--nav-h) 0 0 0;
    display:none;
    flex-direction:column;
    gap:0;
    background:var(--c-surface);
    padding:16px 24px 120px;
    overflow-y:auto;
    z-index:180;
  }
  .nav-menu.is-open{display:flex;}
  .nav-menu a{
    height:52px;
    display:flex;
    align-items:center;
    font-size:16.5px;
    border-bottom:1px solid var(--c-line);
  }
  .nav-menu a::after{display:none;}
  .page-hero{height:auto;min-height:380px;}
  .hero-content{padding:calc(var(--nav-h) + 40px) 0 44px;}
  .timeline::before{left:22px;}
  .tl-item{padding-left:64px;padding-bottom:34px;}
  .tl-num{left:0;width:44px;height:44px;font-size:15px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-contact{grid-column:span 2;}
  .footer-contact ul{display:grid;gap:12px;}
  .site-footer{padding-top:56px;margin-top:64px;}
  .sticky-inner{height:60px;}
  body{padding-bottom:60px;}
  .sticky-text{font-size:13.5px;}
}
@media (max-width:560px){
  .container{padding:0 18px;}
  .logo-text{font-size:15.5px;}
  .logo-text small{font-size:10.5px;}
  .hero-content h1{font-size:28px;}
  .hero-lead{font-size:15.5px;}
  .metrics{grid-template-columns:1fr;}
  .cta-block{padding:36px 22px;border-radius:var(--r-md);}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-contact{grid-column:span 1;}
  .faq-item summary{padding:14px 18px;font-size:15px;}
  .faq-item .faq-body{margin:0 18px;font-size:15px;}
  .sticky-text{display:none;}
  .sticky-actions{width:100%;}
  .sticky-actions .btn{width:100%;}
  .sticky-close{display:none;}
}