/* roulang page: index */
:root{
  --ink:#14161A;
  --teal:#17C3A2;
  --teal-deep:#0E8F76;
  --sand:#E8E3D8;
  --sand-line:#D8D2C4;
  --bg:#F7F6F2;
  --card:#FFFFFF;
  --text:#14161A;
  --text-2:#565B63;
  --text-3:#8E939B;
  --line:#E3DFD6;
  --success:#1FA97A;
  --warn:#C97A18;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(20,22,26,.04),0 12px 32px -12px rgba(20,22,26,.12);
  --shadow-2:0 2px 4px rgba(20,22,26,.06),0 20px 44px -16px rgba(20,22,26,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.85;font-weight:400;
  color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--text);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--teal-deep)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
input,textarea,select{font:inherit}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px}
.tabnum{font-variant-numeric:tabular-nums}

/* 通用按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
  white-space:nowrap;
}
.btn .arw{transition:transform .22s var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.btn-primary{background:var(--teal);color:var(--ink)}
.btn-primary:hover{background:var(--teal-deep);color:#0B0D10}
.btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn[disabled]{opacity:.4;cursor:not-allowed}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;
  background:rgba(23,195,162,.12);color:var(--teal-deep);white-space:nowrap;
}
.badge-sand{background:var(--sand);color:var(--text-2)}

/* 文字链 */
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--teal-deep);
}
.link-arrow .arw{transition:transform .22s var(--ease)}
.link-arrow:hover{color:var(--teal-deep)}
.link-arrow:hover .arw{transform:translateX(4px)}
.link-underline{position:relative;color:var(--teal-deep);font-weight:600}
.link-underline::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;background:var(--teal-deep);
  transition:width .22s var(--ease);
}
.link-underline:hover::after{width:100%}

/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background:rgba(20,22,26,.28);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.18);
  box-shadow:0 8px 24px -16px rgba(0,0,0,.5);
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  background:#14161A;
  -webkit-backdrop-filter:none;backdrop-filter:none;
  border-bottom-color:var(--line);box-shadow:none;
}
.nav-bar{
  height:72px;display:flex;align-items:center;gap:24px;
  transition:height .24s var(--ease);
}
.site-header.is-scrolled .nav-bar{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:24px;height:24px;border-radius:7px;background:var(--teal);position:relative;flex:none;
}
.logo-mark::after{
  content:"";position:absolute;right:3px;bottom:3px;width:9px;height:9px;
  background:#14161A;border-radius:2px;
}
.logo-text{
  font-size:17px;font-weight:800;color:#fff;letter-spacing:-.01em;white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-links a{
  position:relative;font-size:15px;color:rgba(255,255,255,.88);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--teal);
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1)}
.nav-links a.is-active{color:#fff}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none}
.search-shell{width:0;overflow:hidden;transition:width .24s var(--ease)}
.search-shell.is-open{width:220px}
.search-shell input{
  width:100%;height:44px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.08);
  color:#fff;padding:0 14px;font-size:15px;
}
.search-shell input::placeholder{color:rgba(255,255,255,.6)}
.search-shell input:focus{
  outline:2px solid var(--teal);outline-offset:2px;
  border-color:transparent;background:rgba(255,255,255,.14);
}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-btn);
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.28);color:#fff;
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.icon-btn:hover{background:rgba(255,255,255,.14);border-color:#fff}
.icon-btn svg{width:18px;height:18px}
.hamburger{display:none}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,22,26,.5);z-index:190;
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:280px;background:var(--bg);z-index:200;
  transform:translateX(100%);transition:transform .32s var(--ease);
  padding:24px;display:flex;flex-direction:column;gap:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-close{
  align-self:flex-end;width:44px;height:44px;border-radius:var(--r-btn);
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--ink);font-size:22px;line-height:1;
}
.drawer-close:hover{background:var(--sand)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  font-size:17px;padding:16px 0;border-bottom:1px solid var(--line);color:var(--ink);
}
.drawer-nav a.is-active{color:var(--teal-deep);font-weight:600}
.drawer .btn{width:100%}

/* Hero */
.hero{
  position:relative;min-height:min(88vh,760px);
  display:flex;align-items:center;
  padding:132px 0 64px;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(20,22,26,.86),rgba(20,22,26,.42));
}
.hero .wrap{position:relative;z-index:2}
.hero-inner{max-width:620px;color:#fff}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;
  border-radius:999px;background:rgba(23,195,162,.16);border:1px solid rgba(23,195,162,.35);
  color:#8CE7D2;font-size:12px;font-weight:600;margin-bottom:20px;
}
.hero-title{
  font-size:clamp(30px,5vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.01em;
  color:#fff;margin:0 0 20px;
}
.hero-sub{
  font-size:17px;line-height:1.7;color:rgba(255,255,255,.82);
  max-width:520px;margin:0 0 32px;
}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.hero-metrics{
  display:flex;gap:44px;flex-wrap:wrap;
  margin-top:48px;padding-top:28px;border-top:1px solid rgba(255,255,255,.18);
}
.metric .num{
  font-size:22px;font-weight:800;color:var(--teal);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;line-height:1.3;
}
.metric .lbl{font-size:13px;color:rgba(255,255,255,.68);line-height:1.6}

/* 板块通用 */
.sec{padding:96px 0}
.sec-sand{background:var(--sand);padding:0}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:40px;flex-wrap:wrap;
}
.sec-title{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.sec-no{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--teal);font-variant-numeric:tabular-nums}
.sec-rule{display:inline-block;width:24px;height:1px;background:var(--line)}
.sec-title h2{font-size:clamp(24px,3.2vw,34px);line-height:1.25;font-weight:700}
.sec-desc{font-size:15px;color:var(--text-2);max-width:760px;margin-top:14px}

/* 卡片 */
.card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.card-media{position:relative;overflow:hidden;background:var(--sand)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:18px;line-height:1.45;font-weight:600}
.card-sum{font-size:14px;line-height:1.75;color:var(--text-2)}
.card-foot{
  margin-top:auto;padding-top:12px;display:flex;align-items:center;
  justify-content:space-between;gap:12px;border-top:1px solid var(--line);
}
.card-foot .tag{font-size:12px;color:var(--text-3)}
.card-media .badge{position:absolute;left:14px;top:14px}
.media-43{aspect-ratio:4/3}
.media-1610{aspect-ratio:16/10}

/* 主推区 */
.feature-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px}
.feature-side{display:grid;gap:24px;align-content:start}
.feature-big{
  position:relative;display:block;border-radius:var(--r-card);overflow:hidden;
  min-height:440px;background:var(--sand);box-shadow:var(--shadow-1);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease);
}
.feature-big:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.feature-big img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.feature-big:hover img{transform:scale(1.04)}
.feature-big::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,22,26,.08),rgba(20,22,26,.84));
}
.fb-body{
  position:relative;z-index:2;height:100%;padding:32px;
  display:flex;flex-direction:column;justify-content:flex-end;gap:12px;color:#fff;
}
.fb-body h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700}
.fb-body p{font-size:15px;line-height:1.75;color:rgba(255,255,255,.82);max-width:460px}
.fb-link{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-weight:600;font-size:15px}
.fb-link .arw{transition:transform .22s var(--ease)}
.feature-big:hover .fb-link .arw{transform:translateX(4px)}

/* 爆款网格 */
.grid-products{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card-wide{grid-column:span 2;flex-direction:row;align-items:stretch}
.card-wide .card-media{width:44%;flex:none}
.card-wide .card-media img{height:100%;min-height:240px}
.card-wide .card-body{flex:1}
.card-wide .card-title{font-size:20px}

/* 评价轮播 */
.reviews{background:var(--ink);padding:96px 0;color:#fff}
.reviews .sec-title h2{color:#fff}
.reviews .sec-rule{background:rgba(255,255,255,.24)}
.reviews .sec-desc{color:rgba(255,255,255,.68)}
.rev-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.rev-nav{display:flex;gap:12px}
.rev-btn{
  width:44px;height:44px;border-radius:50%;border:1px solid rgba(255,255,255,.4);
  color:#fff;display:inline-flex;align-items:center;justify-content:center;
  transition:background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.rev-btn:hover{background:var(--teal);border-color:var(--teal);color:var(--ink)}
.review-track{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:8px;scrollbar-width:none;
}
.review-track::-webkit-scrollbar{display:none}
.review-card{
  flex:0 0 calc((100% - 48px)/3);scroll-snap-align:start;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);padding:24px;display:flex;flex-direction:column;gap:14px;
}
.rev-top{display:flex;align-items:center;gap:12px}
.rev-avatar{
  width:40px;height:40px;border-radius:50%;background:var(--sand);flex:none;
  display:inline-flex;align-items:center;justify-content:center;
  color:#14161A;font-size:14px;font-weight:700;
}
.rev-name{font-size:15px;font-weight:600;color:#fff}
.rev-stars{font-size:13px;color:var(--teal);letter-spacing:2px}
.rev-text{font-size:14px;line-height:1.8;color:rgba(255,255,255,.78);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.rev-time{font-size:12px;color:rgba(255,255,255,.5)}
.rev-dots{display:flex;gap:8px;justify-content:center;margin-top:28px}
.rev-dot{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.28);transition:background .22s var(--ease),transform .22s var(--ease)}
.rev-dot.is-active{background:var(--teal);transform:scale(1.25)}

/* 保障条 */
.guarantee{background:var(--sand)}
.guarantee-inner{display:grid;grid-template-columns:repeat(4,1fr);align-items:center}
.g-item{
  display:flex;align-items:center;gap:14px;padding:24px 20px;min-height:88px;
  border-left:1px solid var(--sand-line);
}
.g-item:first-child{border-left:0}
.g-item svg{width:20px;height:20px;flex:none;color:var(--teal-deep)}
.g-item .g-label{font-size:14px;font-weight:600;color:var(--ink);line-height:1.5}
.g-item .g-sub{font-size:12px;color:var(--text-3);line-height:1.5}

/* CTA 大条 */
.cta-band{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.cta-inner{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  padding-top:80px;padding-bottom:80px;
}
.cta-text h2{color:#fff;font-size:clamp(24px,3.2vw,34px);line-height:1.25;margin-bottom:16px}
.cta-text p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.74);max-width:460px;margin-bottom:32px}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.cta-media{
  position:relative;border-radius:var(--r-card);overflow:hidden;min-height:260px;background:#1B1E23;
}
.cta-media img{width:100%;height:100%;min-height:260px;object-fit:cover;opacity:.85}
.cta-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(20,22,26,.95),rgba(20,22,26,.05));
}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:5fr 7fr;gap:24px}
.news-lead{display:flex;flex-direction:column}
.news-lead .card-media{aspect-ratio:16/11}
.news-lead .card-body{padding:24px}
.news-lead .card-title{font-size:22px;line-height:1.4}
.news-side{display:grid;gap:16px;align-content:start}
.news-item{
  display:grid;grid-template-columns:96px 1fr;gap:16px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:12px;box-shadow:var(--shadow-1);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease);
}
.news-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.news-item img{width:96px;height:72px;object-fit:cover;border-radius:10px;background:var(--sand)}
.news-item h3{font-size:16px;line-height:1.5;font-weight:600;margin-bottom:6px}
.news-item .meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-3)}
.news-time{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}
.news-empty{
  border:1px dashed var(--line);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;background:var(--card);
}
.news-empty p{font-size:15px;color:var(--text-2);margin-bottom:20px}

/* FAQ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--ink);text-align:left;
  background:none;border:0;
}
.faq-q:hover{color:var(--teal-deep)}
.faq-icon{position:relative;width:20px;height:20px;flex:none}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--teal-deep);border-radius:2px;
}
.faq-icon::before{left:0;right:0;top:9px;height:2px}
.faq-icon::after{
  top:0;bottom:0;left:9px;width:2px;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a p{font-size:15px;line-height:1.8;color:var(--text-2);padding:0 40px 22px 0}

/* 页脚 */
.site-footer{background:var(--ink);color:#fff;padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{padding:0}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-3);margin:16px 0 20px;max-width:300px}
.footer-search{display:flex;gap:8px;max-width:300px}
.footer-search input{
  flex:1;height:44px;border-radius:var(--r-btn);padding:0 14px;font-size:14px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);color:#fff;
}
.footer-search input::placeholder{color:rgba(255,255,255,.45)}
.footer-search input:focus{outline:2px solid var(--teal);outline-offset:2px;border-color:transparent}
.footer-search button{
  height:44px;padding:0 18px;border-radius:var(--r-btn);
  background:var(--teal);color:var(--ink);font-size:14px;font-weight:600;
  transition:background .22s var(--ease);
}
.footer-search button:hover{background:var(--teal-deep)}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-col a,.footer-col li{
  display:block;font-size:14px;line-height:2.1;color:var(--text-3);
}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:24px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:#fff}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* 响应式 */
@media (max-width:1280px){
  .wrap{max-width:1200px}
}
@media (max-width:1024px){
  .wrap{padding:0 24px}
  .sec{padding:72px 0}
  .reviews{padding:72px 0}
  .feature-grid{grid-template-columns:1fr}
  .feature-side{grid-template-columns:1fr 1fr}
  .grid-products{grid-template-columns:repeat(2,1fr)}
  .card-wide{grid-column:span 2}
  .news-grid{grid-template-columns:1fr}
  .news-side{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;gap:32px;padding-top:64px;padding-bottom:64px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .review-card{flex:0 0 calc((100% - 24px)/2)}
  .nav-links{display:none}
  .hamburger{display:inline-flex}
  .nav-bar{gap:16px}
  .nav-actions{margin-left:auto}
  .search-shell.is-open{width:180px}
}
@media (max-width:900px){
  .hero{padding:112px 0 56px;min-height:520px}
}
@media (max-width:640px){
  .wrap{padding:0 16px}
  .sec{padding:56px 0}
  .reviews{padding:56px 0}
  .hero{padding:104px 0 48px;min-height:520px}
  .hero-cta{width:100%}
  .hero-cta .btn{width:100%}
  .hero-metrics{gap:24px;margin-top:36px;padding-top:22px}
  .metric{min-width:calc(50% - 12px)}
  .feature-side{grid-template-columns:1fr}
  .feature-big{min-height:340px}
  .fb-body{padding:22px}
  .grid-products{grid-template-columns:1fr}
  .card-wide{grid-column:span 1;flex-direction:column}
  .card-wide .card-media{width:100%}
  .card-wide .card-media img{min-height:190px}
  .card-body{padding:16px}
  .review-card{flex:0 0 86%}
  .guarantee-inner{grid-template-columns:1fr 1fr}
  .g-item{border-left:0;padding:18px 8px;min-height:auto;align-items:flex-start}
  .g-item:nth-child(odd){padding-left:0}
  .news-item{grid-template-columns:80px 1fr;gap:12px}
  .news-item img{width:80px;height:64px}
  .news-side{grid-template-columns:1fr}
  .cta-inner{padding-top:56px;padding-bottom:56px}
  .cta-media{min-height:200px}
  .cta-media img{min-height:200px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:40px}
  .search-shell{display:none}
  .drawer{width:82vw;max-width:300px}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    transition-duration:.001ms !important;
    animation-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none}
  .card:hover,.feature-big:hover,.news-item:hover{transform:none}
  .card:hover .card-media img,.feature-big:hover img{transform:none}
}

/* roulang page: article */
:root{
  --ink:#14161A;
  --jade:#17C3A2;
  --jade-deep:#0E8F76;
  --jade-soft:rgba(23,195,162,.12);
  --sand:#E8E3D8;
  --paper:#F7F6F2;
  --card:#FFFFFF;
  --text:#14161A;
  --text-2:#565B63;
  --text-3:#8E939B;
  --line:#E3DFD6;
  --line-soft:#D8D2C4;
  --success:#1FA97A;
  --notice:#C97A18;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(20,22,26,.04), 0 12px 32px -12px rgba(20,22,26,.12);
  --sh-2:0 2px 4px rgba(20,22,26,.06), 0 20px 44px -16px rgba(20,22,26,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;}
:focus-visible{outline:2px solid var(--jade);outline-offset:2px;}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 32px;}
.num-tag{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--jade);font-variant-numeric:tabular-nums;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.sec-head .sec-line{display:inline-block;width:24px;height:1px;background:var(--line);vertical-align:middle;margin:0 10px 4px 0;}
.sec-head h2{font-size:clamp(24px,3.2vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em;}

/* ============ 导航 ============ */
.site-header{position:fixed;top:0;left:0;right:0;z-index:200;}
.site-header::before{
  content:"";position:absolute;inset:0;
  background:rgba(20,22,26,.28);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.18);
  box-shadow:0 8px 24px -16px rgba(0,0,0,.5);
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease),backdrop-filter .24s var(--ease);
}
.site-header.is-scrolled::before{
  background:#14161A;
  -webkit-backdrop-filter:none;
  backdrop-filter:none;
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px -14px rgba(0,0,0,.75);
}
.nav-bar{position:relative;z-index:1;display:flex;align-items:center;gap:24px;height:72px;transition:height .24s var(--ease);}
.site-header.is-scrolled .nav-bar{height:60px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{position:relative;width:24px;height:24px;border:2px solid var(--jade);border-radius:6px;display:inline-block;flex:0 0 auto;}
.logo-mark::after{content:"";position:absolute;right:-2px;bottom:-2px;width:10px;height:10px;background:var(--jade);border-radius:0 0 4px 0;}
.logo-text{font-size:17px;font-weight:800;color:#fff;letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:16px;}
.nav-links a{position:relative;font-size:15px;color:rgba(255,255,255,.82);padding:6px 0;transition:color .2s var(--ease);}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--jade);transition:width .24s var(--ease);}
.nav-links a:hover{color:#fff;}
.nav-links a:hover::after{width:100%;}
.nav-links a.is-active{color:#fff;}
.nav-links a.is-active::after{width:100%;}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:12px;}
.icon-btn{width:40px;height:40px;border-radius:999px;border:1px solid rgba(255,255,255,.28);color:#fff;display:inline-flex;align-items:center;justify-content:center;transition:background .2s var(--ease),border-color .2s var(--ease);}
.icon-btn:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.5);}
.nav-cta{height:40px;padding:0 18px;font-size:14px;}
.hamburger{display:none;width:44px;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.28);flex-direction:column;align-items:center;justify-content:center;gap:5px;}
.hamburger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;}

/* 搜索覆盖层 */
.search-overlay{position:fixed;top:0;left:0;right:0;z-index:190;padding:88px 0 24px;background:rgba(20,22,26,.94);border-bottom:1px solid var(--line);transform:translateY(-100%);opacity:0;pointer-events:none;transition:transform .24s var(--ease),opacity .24s var(--ease);}
.search-overlay.is-open{transform:translateY(0);opacity:1;pointer-events:auto;}
.search-form{display:flex;gap:12px;max-width:720px;}
.search-form input{flex:1 1 auto;height:48px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.06);color:#fff;padding:0 14px;}
.search-form input::placeholder{color:rgba(255,255,255,.5);}
.search-form input:focus{outline:none;border-color:var(--jade);box-shadow:0 0 0 4px rgba(23,195,162,.15);}
.search-form .btn{height:48px;}

/* 抽屉 */
.drawer{position:fixed;top:0;right:0;bottom:0;width:280px;background:var(--paper);z-index:260;transform:translateX(100%);transition:transform .28s var(--ease);padding:24px 20px;display:flex;flex-direction:column;gap:8px;box-shadow:-20px 0 40px -20px rgba(0,0,0,.4);}
.drawer.is-open{transform:translateX(0);}
.drawer-close{align-self:flex-end;width:40px;height:40px;font-size:26px;line-height:1;color:var(--text-2);border-radius:10px;}
.drawer-close:hover{background:var(--sand);}
.drawer nav{display:flex;flex-direction:column;margin-top:8px;}
.drawer nav a{font-size:17px;padding:16px 4px;border-bottom:1px solid var(--line);color:var(--text);}
.drawer nav a.is-active{color:var(--jade-deep);font-weight:600;}
.drawer-mask{position:fixed;inset:0;background:rgba(20,22,26,.5);z-index:250;opacity:0;pointer-events:none;transition:opacity .24s var(--ease);}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);}
.btn-primary{background:var(--jade);color:#14161A;}
.btn-primary:hover{background:var(--jade-deep);color:#fff;box-shadow:var(--sh-1);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.5);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-outline:hover{background:var(--ink);color:#fff;}
.btn .arrow{transition:transform .2s var(--ease);}
.btn:hover .arrow{transform:translateX(4px);}
.link-more{position:relative;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--jade-deep);}
.link-more::after{content:"";position:absolute;left:0;bottom:-4px;width:0;height:1px;background:currentColor;transition:width .24s var(--ease);}
.link-more:hover::after{width:100%;}
.link-more:hover .arrow{transform:translateX(4px);}
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:12px;font-weight:600;background:var(--jade-soft);color:var(--jade-deep);}
.badge-dark{background:rgba(23,195,162,.16);color:#4FDCC0;border:1px solid rgba(23,195,162,.36);}
.badge-sand{background:var(--sand);color:var(--text-2);}

/* ============ 文章头部 ============ */
.article-hero{position:relative;padding:148px 0 56px;background:#14161A url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:#fff;overflow:hidden;}
.article-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,22,26,.9) 0%,rgba(20,22,26,.78) 60%,rgba(20,22,26,.86) 100%);}
.article-hero .wrap{position:relative;z-index:1;}
.article-hero-inner{max-width:880px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:22px;}
.breadcrumb .sep{color:rgba(255,255,255,.32);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .current{color:rgba(255,255,255,.85);}
.article-hero h1{font-size:clamp(28px,4.4vw,44px);line-height:1.22;font-weight:800;letter-spacing:-.01em;margin:16px 0 20px;color:#fff;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13px;color:rgba(255,255,255,.66);padding-top:22px;border-top:1px solid rgba(255,255,255,.14);}
.meta-row time{font-variant-numeric:tabular-nums;}
.meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.3);display:inline-block;}

/* ============ 文章主体 ============ */
.article-main{padding:56px 0 96px;}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 300px;gap:60px;justify-content:space-between;align-items:start;}
.article-body{min-width:0;}
.article-content{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:40px 44px;
  box-shadow:var(--sh-1);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  overflow-wrap:break-word;
  word-break:break-word;
}
.article-content > *:first-child{margin-top:0;}
.article-content p{margin:0 0 1.1em;}
.article-content > p:first-of-type{font-size:17px;color:#101216;}
.article-content h2{font-size:24px;line-height:1.35;font-weight:700;margin:40px 0 16px;letter-spacing:-.01em;}
.article-content h3{font-size:19px;line-height:1.4;font-weight:600;margin:28px 0 12px;}
.article-content h4{font-size:17px;font-weight:600;margin:22px 0 10px;}
.article-content ul{margin:0 0 1.2em;padding-left:0;}
.article-content ul li{position:relative;padding-left:20px;margin-bottom:8px;}
.article-content ul li::before{content:"";position:absolute;left:0;top:.75em;width:6px;height:6px;background:var(--jade);border-radius:1px;}
.article-content ol{list-style:decimal;padding-left:22px;margin:0 0 1.2em;}
.article-content ol li{margin-bottom:8px;}
.article-content blockquote{margin:26px 0;padding:20px;background:var(--sand);border-left:3px solid var(--jade);border-radius:0 var(--r-card) var(--r-card) 0;color:var(--text-2);}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content figure{margin:26px 0;}
.article-content img{border-radius:var(--r-img);margin:0 auto;height:auto;}
.article-content figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-content table{width:100%;margin:26px 0;font-size:15px;border-collapse:collapse;display:block;overflow-x:auto;}
.article-content th{background:var(--sand);text-align:left;font-weight:600;padding:12px;border-bottom:1px solid var(--line-soft);white-space:nowrap;}
.article-content td{padding:12px;border-bottom:1px solid var(--line);}
.article-content pre{background:#14161A;color:#E8E3D8;padding:18px 20px;border-radius:10px;overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0;}
.article-content code{font-family:ui-monospace,Menlo,Consolas,"Courier New",monospace;font-size:.92em;}
.article-content :not(pre) > code{background:var(--sand);padding:2px 6px;border-radius:6px;}
.article-content a{color:var(--jade-deep);text-decoration:underline;text-underline-offset:3px;}
.article-content a:hover{color:var(--ink);}
.article-content hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

/* 空态 */
.empty-state{border:1px dashed var(--line);border-radius:var(--r-card);padding:64px 24px;text-align:center;background:#fff;}
.empty-state p{font-size:18px;font-weight:600;color:var(--text-2);margin-bottom:20px;}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:96px;align-self:start;}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);margin-bottom:20px;transition:box-shadow .24s var(--ease);}
.side-card:hover{box-shadow:var(--sh-2);}
.side-card h3{font-size:15px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:14px;height:2px;background:var(--jade);border-radius:2px;}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:340px;overflow-y:auto;}
.toc-list a{display:block;font-size:14px;line-height:1.6;color:var(--text-2);padding:7px 10px;border-left:2px solid transparent;border-radius:6px;transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);}
.toc-list a.is-sub{padding-left:22px;font-size:13px;color:var(--text-3);}
.toc-list a:hover{color:var(--text);background:var(--paper);}
.toc-list a.is-current{color:var(--jade-deep);border-left-color:var(--jade);background:rgba(23,195,162,.07);font-weight:600;}
.toc-empty{font-size:13px;color:var(--text-3);}
.hot-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);}
.hot-item:last-child{border-bottom:0;padding-bottom:0;}
.hot-item img{width:72px;height:56px;object-fit:cover;border-radius:8px;background:var(--sand);flex:0 0 auto;}
.hot-item h4{font-size:14px;line-height:1.5;font-weight:600;margin-bottom:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.hot-item span{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.hot-item:hover h4{color:var(--jade-deep);}
.side-cta{background:var(--jade);border-color:var(--jade);color:#14161A;}
.side-cta h3{color:#14161A;}
.side-cta h3::before{background:#14161A;}
.side-cta p{font-size:14px;line-height:1.7;color:rgba(20,22,26,.78);margin-bottom:16px;}
.side-cta .btn{width:100%;background:#14161A;color:#fff;height:44px;font-size:14px;}
.side-cta .btn:hover{background:#000;}

/* 移动端侧栏折叠 */
.side-toggle{display:none;width:100%;justify-content:space-between;align-items:center;height:48px;padding:0 16px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);font-size:15px;font-weight:600;margin-bottom:12px;}
.side-toggle .sign{color:var(--jade-deep);font-size:18px;line-height:1;}

/* ============ 相关推荐 ============ */
.related-sec{padding:0 0 96px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.related-card{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:12px;transition:transform .24s var(--ease),box-shadow .24s var(--ease);}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.related-card img{width:96px;height:72px;object-fit:cover;border-radius:10px;background:var(--sand);flex:0 0 auto;}
.related-card h3{font-size:15px;font-weight:600;line-height:1.5;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-card time{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;}

/* 返回入口 */
.back-links{display:flex;flex-wrap:wrap;gap:28px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line);}
.back-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--text-2);transition:color .2s var(--ease);}
.back-link .arrow{transition:transform .2s var(--ease);}
.back-link:hover{color:var(--jade-deep);}
.back-link:hover .arrow{transform:translateX(-4px);}

/* ============ 整宽 CTA ============ */
.cta-band{background:#14161A;color:#fff;}
.cta-band .wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding-top:80px;padding-bottom:80px;}
.cta-band h2{font-size:clamp(24px,3vw,32px);line-height:1.3;font-weight:700;letter-spacing:-.01em;margin:14px 0 14px;}
.cta-band p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.68);max-width:460px;}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:28px;}
.cta-band .cta-media{position:relative;border-radius:var(--r-card);overflow:hidden;}
.cta-band .cta-media img{width:100%;height:280px;object-fit:cover;}
.cta-band .cta-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#14161A 0%,rgba(20,22,26,.35) 55%,rgba(20,22,26,0) 100%);}

/* ============ 页脚 ============ */
.site-footer{background:#14161A;color:#fff;padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo{margin-bottom:14px;}
.footer-brand p{font-size:14px;line-height:1.75;color:var(--text-3);max-width:300px;margin-bottom:18px;}
.footer-search{display:flex;gap:8px;max-width:320px;}
.footer-search input{flex:1 1 auto;height:44px;padding:0 14px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff;font-size:14px;}
.footer-search input::placeholder{color:rgba(255,255,255,.42);}
.footer-search input:focus{outline:none;border-color:var(--jade);box-shadow:0 0 0 4px rgba(23,195,162,.15);}
.footer-search button{height:44px;padding:0 18px;border-radius:var(--r-btn);background:var(--jade);color:#14161A;font-size:14px;font-weight:600;transition:background .2s var(--ease),color .2s var(--ease);}
.footer-search button:hover{background:var(--jade-deep);color:#fff;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col a,.footer-col li{display:block;font-size:14px;color:var(--text-3);margin-bottom:10px;line-height:1.7;}
.footer-col a{transition:color .2s var(--ease);}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3);}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .wrap{padding:0 32px;}
}
@media (max-width:1024px){
  .wrap{padding:0 24px;}
  .nav-links{display:none;}
  .hamburger{display:flex;}
  .nav-cta{display:none;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .article-side{position:static;top:auto;}
  .article-content{padding:32px 28px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band .wrap{grid-template-columns:1fr;gap:32px;padding-top:64px;padding-bottom:64px;}
  .cta-band .cta-media img{height:220px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .side-toggle{display:flex;}
  .side-card{display:none;}
  .side-card.is-open{display:block;}
}
@media (max-width:640px){
  .wrap{padding:0 16px;}
  .logo-text{font-size:15px;}
  .article-hero{padding:126px 0 40px;}
  .article-hero h1{font-size:28px;}
  .article-main{padding:36px 0 64px;}
  .article-content{padding:22px 18px;font-size:16px;}
  .article-content h2{font-size:21px;margin-top:32px;}
  .article-content h3{font-size:18px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .related-card img{width:88px;height:66px;}
  .hot-item img{width:64px;height:50px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .btn{height:44px;padding:0 20px;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:26px;}
  .cta-band .wrap{padding-top:56px;padding-bottom:56px;}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  .reveal{transform:none !important;opacity:1 !important;}
  .related-card:hover{transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#14161A;
  --brand:#17C3A2;
  --brand-deep:#0E8F76;
  --sand:#E8E3D8;
  --sand-line:#D8D2C4;
  --bg:#F7F6F2;
  --card:#FFFFFF;
  --muted:#565B63;
  --weak:#8E939B;
  --line:#E3DFD6;
  --ok:#1FA97A;
  --warn:#C97A18;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(20,22,26,.04), 0 12px 32px -12px rgba(20,22,26,.12);
  --sh-2:0 2px 4px rgba(20,22,26,.06), 0 20px 44px -16px rgba(20,22,26,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;font-weight:400;line-height:1.85;
  color:var(--ink);background:var(--bg);
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .24s var(--ease)}
a:hover{color:var(--brand-deep)}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em}
h1{font-size:clamp(30px,5vw,52px);font-weight:800;line-height:1.15}
h2{font-size:clamp(24px,3.2vw,34px)}
h3{font-size:20px;line-height:1.4;font-weight:600}
h4{font-size:14px;font-weight:600}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(23,195,162,.25)}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.sec{padding:96px 0}
.sec-tight{padding:72px 0}
.sec-head{margin-bottom:40px}
.sec-mark{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.sec-num{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand)}
.sec-rule{width:24px;height:1px;background:var(--line);display:inline-block}
.sec-name{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--weak)}
.sec-head p{color:var(--muted);max-width:760px;margin:14px 0 0}
.hairline{height:1px;background:var(--line);border:0;margin:0}

/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background:rgba(20,22,26,.86);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.18);
  box-shadow:0 8px 24px -16px rgba(0,0,0,.5);
  transition:height .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{background:#14161A;border-bottom-color:var(--line);box-shadow:0 10px 30px -20px rgba(0,0,0,.85);-webkit-backdrop-filter:none;backdrop-filter:none}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--nav-h);transition:height .24s var(--ease)}
.site-header.is-scrolled .nav-wrap{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;color:#fff}
.logo:hover{color:#fff}
.logo-mark{position:relative;width:24px;height:24px;border-radius:7px;background:var(--brand);display:inline-block;flex:0 0 24px}
.logo-mark::after{content:"";position:absolute;right:-1px;bottom:-1px;width:11px;height:11px;background:#14161A;border-radius:3px}
.logo-text{font-size:17px;font-weight:800;letter-spacing:.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{position:relative;font-size:15px;color:rgba(255,255,255,.82);padding:6px 0}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--brand);transition:width .26s var(--ease)}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after,.nav-links a.is-active::after{width:100%}
.nav-links a.is-active{color:#fff;font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px}
.icon-btn{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;border:1px solid rgba(255,255,255,.22);background:transparent;color:#fff;cursor:pointer;transition:background .24s var(--ease),border-color .24s var(--ease)}
.icon-btn:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.4)}
.icon-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}
.hamburger{display:none;width:44px;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.22);background:transparent;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.hamburger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease)}
.btn-primary{background:var(--brand);color:#14161A;border-color:var(--brand)}
.btn-primary:hover{background:var(--brand-deep);color:#0B100F;border-color:var(--brand-deep);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn:active{transform:translateY(1px)}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--brand-deep);font-size:14px;font-weight:600}
.link-arrow span[aria-hidden]{transition:transform .24s var(--ease)}
.link-arrow:hover{color:var(--brand-deep)}
.link-arrow:hover span[aria-hidden]{transform:translateX(4px)}
.search-panel{display:none;background:#14161A;border-top:1px solid rgba(255,255,255,.12)}
.search-panel.is-open{display:block}
.search-panel .wrap{padding-top:16px;padding-bottom:16px}
.search-panel form{display:flex;gap:12px}
.search-panel input{flex:1;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.06);color:#fff;padding:0 14px}
.search-panel input::placeholder{color:rgba(255,255,255,.5)}
.search-panel input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(23,195,162,.18)}
.drawer-mask{position:fixed;inset:0;background:rgba(20,22,26,.5);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s;z-index:200}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;width:280px;max-width:86vw;height:100%;background:#F7F6F2;z-index:220;transform:translateX(100%);transition:transform .28s var(--ease);padding:20px 0;display:flex;flex-direction:column;box-shadow:-20px 0 40px -24px rgba(0,0,0,.5)}
.drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding:0 20px 16px;border-bottom:1px solid var(--line)}
.drawer-top strong{font-size:15px}
.drawer-close{width:44px;height:44px;border:0;background:transparent;font-size:22px;line-height:1;cursor:pointer;color:var(--ink)}
.drawer nav a{display:block;padding:16px 20px;font-size:17px;border-bottom:1px solid var(--line)}
.drawer nav a.is-active{color:var(--brand-deep);font-weight:600}

/* 页头 */
.cat1-head{padding:calc(var(--nav-h) + 64px) 0 64px;background:var(--bg);border-bottom:1px solid var(--line)}
.head-grid{display:flex;gap:64px;align-items:flex-start}
.head-left{flex:0 0 40%;max-width:40%}
.head-right{flex:1 1 auto}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--brand-deep);margin-bottom:16px}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--brand)}
.cat1-head h1{margin-bottom:16px}
.head-lead{font-size:17px;color:var(--muted);line-height:1.8;margin:0}
.head-right p{color:var(--muted);font-size:15.5px;margin:0 0 14px}
.head-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}
.chip{display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:13px;color:var(--muted)}

/* 卡片 */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;height:100%;transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.card-link{display:flex;flex-direction:column;height:100%}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--sand)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.card-body h3{font-size:18px}
.card-body p{font-size:14.5px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;background:rgba(23,195,162,.12);color:var(--brand-deep);width:fit-content}
.badge-sand{background:var(--sand);color:var(--muted)}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line)}
.card-foot time{font-size:13px;color:var(--weak)}

/* 暖砂要点 */
.points{background:var(--sand);border-radius:var(--r-card);padding:40px;border:1px solid var(--sand-line)}
.points h3{margin-bottom:20px;font-size:20px}
.points li{position:relative;padding-left:24px;margin-bottom:14px;color:#2C2F35;font-size:15.5px}
.points li:last-child{margin-bottom:0}
.points li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;background:var(--brand);border-radius:1px}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{border-top:1px solid var(--line);padding-top:20px}
.step-num{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand);display:block;margin-bottom:12px}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--muted);margin:0}

/* FAQ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 0;background:transparent;border:0;text-align:left;font-size:17px;font-weight:600;cursor:pointer;color:var(--ink)}
.faq-q:hover{color:var(--brand-deep)}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 20px;transition:transform .24s var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-deep);border-radius:2px}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a p{font-size:15px;color:var(--muted);margin:0;padding:0 40px 22px 0}
.faq-item.is-open .faq-a{max-height:420px}

/* CTA 条 */
.cta-band{background:#14161A;color:#fff;padding:80px 0}
.cta-inner{display:flex;align-items:center;gap:56px}
.cta-text{flex:1 1 54%}
.cta-text h2{color:#fff;margin-bottom:14px}
.cta-text p{color:rgba(255,255,255,.72);max-width:460px}
.cta-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-top:26px}
.cta-band .link-arrow{color:var(--brand)}
.cta-media{flex:1 1 46%;border-radius:var(--r-img);overflow:hidden;position:relative;background:var(--sand)}
.cta-media img{width:100%;height:280px;object-fit:cover;border-radius:var(--r-img)}
.cta-media::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#14161A 0%,rgba(20,22,26,.2) 45%,rgba(20,22,26,0) 100%);z-index:2}

/* 页脚 */
.site-footer{background:#14161A;color:#fff;padding:64px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{color:var(--weak);font-size:14px;max-width:280px}
.footer-search{display:flex;gap:8px;margin-top:18px;max-width:320px}
.footer-search input{flex:1;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.06);color:#fff;padding:0 14px;font-size:14px}
.footer-search input::placeholder{color:rgba(255,255,255,.45)}
.footer-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(23,195,162,.16)}
.footer-search button{height:44px;padding:0 16px;border-radius:10px;border:1px solid var(--brand);background:var(--brand);color:#14161A;font-weight:600;font-size:14px;cursor:pointer;transition:background .24s var(--ease)}
.footer-search button:hover{background:var(--brand-deep);border-color:var(--brand-deep)}
.footer-col h4{color:#fff;font-size:14px;margin-bottom:18px}
.footer-col a,.footer-col li{display:block;color:var(--weak);font-size:14px;margin-bottom:10px;list-style:none}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:48px;padding-top:20px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--weak)}

/* 动效 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (max-width:1024px){
  .wrap{padding:0 24px}
  .sec{padding:72px 0}
  .head-grid{flex-direction:column;gap:28px}
  .head-left,.head-right{flex:1 1 auto;max-width:100%}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:32px}
  .cta-media{width:100%}
  .nav-links{display:none}
  .hamburger{display:flex}
  .icon-btn{display:none}
}
@media (max-width:640px){
  .wrap{padding:0 16px}
  .sec{padding:56px 0}
  .sec-tight{padding:48px 0}
  .cat1-head{padding:calc(var(--nav-h) + 40px) 0 40px}
  body{font-size:15px;line-height:1.8}
  .card-body{padding:16px}
  .points{padding:24px}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta-band{padding:56px 0}
  .cta-media img{height:200px}
  .btn{width:100%}
  .cta-actions .link-arrow{width:100%}
  .faq-a p{padding-right:0}
  .footer-search{max-width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
  .reveal{transform:none !important}
  .card:hover{transform:none}
  .card:hover .card-media img{transform:none}
  .link-arrow:hover span[aria-hidden]{transform:none}
}

/* roulang page: category2 */
:root{
  --ink:#14161A;
  --ink-2:#565B63;
  --ink-3:#8E939B;
  --mint:#17C3A2;
  --mint-deep:#0E8F76;
  --sand:#E8E3D8;
  --sand-line:#D8D2C4;
  --bg:#F7F6F2;
  --card:#FFFFFF;
  --line:#E3DFD6;
  --ok:#1FA97A;
  --warn:#C97A18;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,26,.04), 0 12px 32px -12px rgba(20,22,26,.12);
  --sh-2:0 2px 4px rgba(20,22,26,.06), 0 20px 44px -16px rgba(20,22,26,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:72px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;border-radius:var(--r-img);background:var(--sand);object-fit:cover}
a{color:inherit;text-decoration:none;transition:color .24s var(--ease)}
a:hover{color:var(--mint-deep)}
button{font-family:inherit;font-size:inherit;line-height:1}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.25;font-weight:700}
p{margin:0}
::selection{background:rgba(23,195,162,.28)}

/* Foundation 默认外观覆盖 */
.button,button:not(.chip):not(.menu-toggle):not(.search-toggle):not(.drawer-close){
  border-radius:var(--r-btn);
}
a:not(.btn):hover{color:var(--mint-deep)}
.reveal-on-scroll{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal-on-scroll.is-in{opacity:1;transform:translateY(0)}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  background:rgba(20,22,26,.62);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.18);
  box-shadow:0 8px 24px -16px rgba(0,0,0,.5);
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-solid{
  background:#14161A;
  -webkit-backdrop-filter:none;
  backdrop-filter:none;
  border-bottom-color:var(--line);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:28px;
  height:var(--nav-h);
  transition:height .24s var(--ease);
}
.site-header.is-solid .nav-wrap{height:60px}

.logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:18px;letter-spacing:-.01em;flex:0 0 auto}
.logo:hover{color:#fff}
.logo-mark{
  position:relative;
  width:24px;height:24px;
  flex:0 0 24px;
  background:var(--mint);
  border-radius:6px;
}
.logo-mark::after{
  content:"";
  position:absolute;
  right:-3px;bottom:-3px;
  width:12px;height:12px;
  background:var(--ink);
  border:2px solid rgba(20,22,26,.9);
  border-radius:3px;
}
.logo-text{white-space:nowrap}

.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-links a{
  position:relative;
  font-size:15px;
  color:rgba(255,255,255,.8);
  padding:6px 0;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;
  height:2px;
  background:var(--mint);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1)}
.nav-links a.is-active{color:#fff}

.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.search-toggle{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);
  color:#fff;
  cursor:pointer;
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.search-toggle:hover{background:rgba(23,195,162,.2);border-color:var(--mint)}
.search-toggle svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.btn-primary{background:var(--mint);color:var(--ink)}
.btn-primary:hover{background:var(--mint-deep);color:#fff}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.btn-ghost-light:hover{background:#fff;color:var(--ink)}
.nav-cta{height:40px;padding:0 18px;font-size:14px}

.menu-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);
  cursor:pointer;
  padding:0;
  place-items:center;
}
.menu-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;margin:4px auto}

/* 抽屉 */
.drawer{
  position:fixed;top:0;right:0;bottom:0;
  width:280px;
  background:var(--bg);
  z-index:120;
  padding:20px;
  overflow-y:auto;
  transform:translateX(100%);
  transition:transform .28s var(--ease);
  box-shadow:-16px 0 40px -20px rgba(20,22,26,.35);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.drawer-head strong{font-size:15px;font-weight:700}
.drawer-close{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:9px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink);
  cursor:pointer;
  font-size:18px;
}
.drawer nav{display:block;margin-top:12px}
.drawer nav a{
  display:block;
  font-size:17px;
  padding:16px 2px;
  border-bottom:1px solid var(--line);
  color:var(--ink);
}
.drawer nav a.is-active{color:var(--mint-deep);font-weight:600}
.drawer .btn{width:100%;margin-top:20px}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(20,22,26,.45);
  z-index:110;
  opacity:0;visibility:hidden;
  transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* 覆盖式搜索 */
.search-overlay{
  position:fixed;top:0;left:0;right:0;
  z-index:100;
  background:rgba(20,22,26,.96);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  padding:16px 0;
  transform:translateY(-104%);
  transition:transform .3s var(--ease);
}
.search-overlay.is-open{transform:translateY(0)}
.search-form{display:flex;gap:12px;align-items:center}
.search-form input{
  flex:1 1 auto;
  height:44px;
  border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.06);
  color:#fff;
  padding:0 16px;
  font-size:15px;
}
.search-form input::placeholder{color:rgba(255,255,255,.5)}
.search-form input:focus{outline:none;border-color:var(--mint);box-shadow:0 0 0 4px rgba(23,195,162,.18)}
.search-form .btn{height:44px}
.search-form .btn-ghost-light{border-color:rgba(255,255,255,.35)}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:calc(var(--nav-h) + 92px) 0 84px;
  overflow:hidden;
  background:var(--bg);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
}
.hero-bg::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(247,246,242,.94) 0%,rgba(247,246,242,.84) 52%,rgba(247,246,242,.97) 100%);
}
.hero-inner{
  position:relative;
  z-index:2;
  max-width:880px;
  text-align:center;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;
  padding:0 16px;
  border-radius:var(--r-pill);
  background:rgba(23,195,162,.14);
  color:var(--mint-deep);
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
}
.hero-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--mint)}
.hero h1{
  margin-top:22px;
  font-size:clamp(30px,5vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.01em;
}
.hero-sub{
  margin-top:18px;
  font-size:14px;
  line-height:1.7;
  color:var(--ink-2);
}
.hero-rule{
  width:64px;height:1px;
  background:var(--sand-line);
  margin:30px auto 0;
}

/* ============ 筛选标签 ============ */
.filter-bar{
  background:var(--card);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:16px 0;
}
.chip-scroll{
  display:flex;
  gap:10px;
  overflow-x:auto;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
}
.chip-scroll::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;
  height:38px;
  padding:0 18px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:transparent;
  color:var(--ink-2);
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
  cursor:pointer;
  transition:background .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
}
.chip:hover{border-color:var(--mint);color:var(--ink)}
.chip.is-active{background:var(--mint);border-color:var(--mint);color:var(--ink)}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.sec-head{margin-bottom:40px}
.sec-title-row{display:flex;align-items:center;gap:14px}
.sec-num{
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--mint);
  font-variant-numeric:tabular-nums;
}
.sec-dash{width:24px;height:1px;background:var(--line);flex:0 0 24px}
.sec-title-row h2{font-size:clamp(24px,3.2vw,34px);line-height:1.25;font-weight:700}
.sec-desc{margin-top:12px;font-size:14px;color:var(--ink-2);max-width:640px}

/* ============ 交错双列条目 ============ */
.stagger-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 56px}
.stagger-col--b{padding-top:44px}
.entry-item{
  display:flex;
  gap:16px;
  padding:26px 0;
  border-bottom:1px solid var(--line);
  transition:transform .28s var(--ease);
}
.entry-item:hover{transform:translateY(-4px)}
.entry-num{
  flex:0 0 26px;
  width:26px;
  padding-top:5px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--mint);
  font-variant-numeric:tabular-nums;
}
.entry-thumb{
  flex:0 0 96px;
  width:96px;height:72px;
  border-radius:10px;
  overflow:hidden;
  background:var(--sand);
}
.entry-thumb img{width:100%;height:100%;border-radius:0;transition:transform .32s var(--ease)}
.entry-item:hover .entry-thumb img{transform:scale(1.06)}
.entry-body{flex:1 1 auto;min-width:0}
.entry-body h3{font-size:16px;font-weight:600;line-height:1.4}
.entry-body h3 a:hover{color:var(--mint-deep)}
.entry-body p{
  margin-top:6px;
  font-size:14px;
  line-height:1.7;
  color:var(--ink-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.entry-meta{margin-top:8px;font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.entry-empty{
  margin-top:8px;
  padding:40px 24px;
  text-align:center;
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  color:var(--ink-2);
  font-size:15px;
}

/* ============ 图文交错 ============ */
.split-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-row + .split-row{margin-top:80px}
.split-row.is-reverse .split-text{order:2}
.split-row.is-reverse .split-media{order:1}
.split-text h3{font-size:clamp(22px,2.6vw,28px);font-weight:700;line-height:1.3}
.split-text > p{margin-top:16px;font-size:16px;line-height:1.85;color:var(--ink-2)}
.split-media img{
  width:100%;
  aspect-ratio:16/10;
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
}
.tick-list{margin-top:20px}
.tick-list li{
  position:relative;
  padding-left:18px;
  margin-top:10px;
  font-size:15px;
  line-height:1.7;
  color:var(--ink-2);
}
.tick-list li::before{
  content:"";
  position:absolute;left:0;top:.68em;
  width:6px;height:6px;
  border-radius:1px;
  background:var(--mint);
}

/* ============ 常见情况对照 ============ */
.case-section{background:var(--bg)}
.table-scroll{overflow-x:auto;border-radius:var(--r-card)}
.case-table{width:100%;border-collapse:collapse;min-width:640px;font-size:15px}
.case-table thead th{
  background:var(--sand);
  color:var(--ink);
  font-size:13px;
  font-weight:600;
  letter-spacing:.02em;
  text-align:left;
  padding:14px 20px;
}
.case-table thead th:first-child{border-radius:10px 0 0 10px}
.case-table thead th:last-child{border-radius:0 10px 10px 0}
.case-table tbody td{
  padding:20px;
  border-bottom:1px solid var(--line);
  color:var(--ink-2);
  vertical-align:top;
  line-height:1.75;
}
.case-table tbody td:first-child{color:var(--ink);font-weight:600;width:34%}

/* ============ CTA 整宽条 ============ */
.cta-band{position:relative;background:var(--ink);color:#fff;overflow:hidden}
.cta-media{
  position:absolute;top:0;right:0;bottom:0;
  width:52%;
  background-image:url("/assets/images/coverpic/cover-5.png");
  background-size:cover;
  background-position:center;
  z-index:1;
}
.cta-media::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(20,22,26,1) 0%,rgba(20,22,26,.55) 45%,rgba(20,22,26,.25) 100%);
}
.cta-inner{
  position:relative;
  z-index:2;
  padding-top:80px;
  padding-bottom:80px;
}
.cta-copy{max-width:520px}
.cta-copy h2{color:#fff;font-size:clamp(24px,3.2vw,34px);line-height:1.25;font-weight:700}
.cta-copy p{margin-top:14px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.72)}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin-top:28px}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;
  color:var(--mint);
  position:relative;
}
.link-arrow::after{content:"→";transition:transform .24s var(--ease)}
.link-arrow:hover{color:var(--mint)}
.link-arrow:hover::after{transform:translateX(4px)}
.link-arrow::before{
  content:"";
  position:absolute;left:0;bottom:-3px;
  width:0;height:1px;background:currentColor;
  transition:width .28s var(--ease);
}
.link-arrow:hover::before{width:100%}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  padding-top:72px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand .logo{color:#fff}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  line-height:1.7;
  color:var(--ink-3);
  max-width:280px;
}
.footer-search{display:flex;gap:8px;margin-top:20px;max-width:320px}
.footer-search input{
  flex:1 1 auto;
  height:44px;
  border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);
  color:#fff;
  padding:0 14px;
  font-size:14px;
}
.footer-search input::placeholder{color:var(--ink-3)}
.footer-search input:focus{outline:none;border-color:var(--mint);box-shadow:0 0 0 4px rgba(23,195,162,.15)}
.footer-search button{
  height:44px;
  padding:0 18px;
  border:0;
  border-radius:var(--r-btn);
  background:var(--mint);
  color:var(--ink);
  font-size:14px;
  font-weight:600;
  cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease);
}
.footer-search button:hover{background:var(--mint-deep);color:#fff}
.footer-col h4{
  color:#fff;
  font-size:14px;
  font-weight:600;
  margin-bottom:14px;
}
.footer-col a,.footer-col li{
  display:block;
  padding:6px 0;
  font-size:14px;
  color:var(--ink-3);
}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:48px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  font-size:13px;
  color:var(--ink-3);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .wrap{padding:0 24px}
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .stagger-grid{gap:0 36px}
  .stagger-col--b{padding-top:32px}
  .split-row{gap:36px}
  .split-row + .split-row{margin-top:56px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-media{width:46%}
}

@media (max-width:900px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .menu-toggle{display:grid}
  .hero{padding-top:calc(var(--nav-h) + 68px)}
}

@media (max-width:768px){
  .stagger-grid{grid-template-columns:1fr}
  .stagger-col--b{padding-top:0}
  .split-row{grid-template-columns:1fr;gap:24px}
  .split-row.is-reverse .split-text{order:1}
  .split-row.is-reverse .split-media{order:2}
  .cta-media{display:none}
  .cta-inner{padding-top:56px;padding-bottom:56px}
}

@media (max-width:640px){
  body{font-size:15px}
  .wrap{padding:0 16px}
  .section{padding:56px 0}
  .section--tight{padding:44px 0}
  .hero{padding:calc(var(--nav-h) + 52px) 0 56px;min-height:520px;display:flex;align-items:center}
  .hero h1{font-size:30px}
  .entry-item{gap:12px;padding:20px 0}
  .entry-num{flex:0 0 20px;width:20px;padding-top:4px}
  .entry-thumb{flex:0 0 76px;width:76px;height:60px}
  .btn{height:44px;padding:0 20px;font-size:15px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .case-table{min-width:560px}
}

@media (min-width:1281px){
  .wrap{padding:0 40px}
  .section{padding:104px 0}
}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .entry-item:hover{transform:none}
  .entry-item:hover .entry-thumb img{transform:none}
  .reveal-on-scroll{opacity:1;transform:none}
}