/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --brand-ink:#17605A;
  --brand-ink-soft:#2C7F74;
  --brand-wash:#E6F0ED;
  --accent:#D9865F;
  --accent-wash:#FBEDE4;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E4DFD4;
  --text:#14191C;
  --text-2:#5A6360;
  --text-3:#8A928E;
  --dark:#10312D;
  --dark-2:#0A2320;
  --dark-text:#EAF2EF;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Source Han Serif SC","Songti SC",serif;
  --r-card:16px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-1:0 2px 10px rgba(20,25,28,.05);
  --sh-2:0 10px 26px rgba(20,25,28,.10);
  --sec-y:96px;
  --container:1200px;
}
@media (max-width:991px){:root{--sec-y:64px}}
@media (max-width:575px){:root{--sec-y:48px}}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-ink);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-ink-soft);text-decoration:underline;text-underline-offset:4px}
button,input,select,textarea{font-family:inherit;font-size:inherit}
button{cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text)}
h1{font-size:clamp(26px,3.6vw,42px);line-height:1.28;letter-spacing:.2px}
h2{font-size:clamp(22px,2.4vw,30px);line-height:1.32}
h3{font-size:20px;line-height:1.45;font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(23,96,90,.25);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-wash);color:var(--brand-ink)}

/* ============ 通用容器与工具 ============ */
.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
.section{padding:var(--sec-y) 0}
.section-alt{background:var(--surface)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:1.2px;
  color:var(--brand-ink);
  background:var(--brand-wash);
  border-radius:var(--r-pill);
  padding:4px 14px;
  margin-bottom:14px;
  font-weight:600;
}
.section-head h2{margin-bottom:0}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--brand-ink);
  white-space:nowrap;
}
.link-more i{transition:transform .22s ease;font-size:13px}
.link-more:hover{text-decoration:none;color:var(--brand-ink-soft)}
.link-more:hover i{transform:translateX(4px)}
.tag{
  display:inline-block;
  font-size:13px;
  line-height:1.6;
  padding:3px 12px;
  border-radius:var(--r-pill);
  background:var(--brand-wash);
  color:var(--brand-ink);
  font-weight:600;
}
.tag-accent{background:var(--accent-wash);color:#B4663F}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  font-weight:600;
  font-size:15px;
  line-height:1;
  padding:0 24px;
  height:46px;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  text-decoration:none;
}
.btn:hover{text-decoration:none}
.btn-primary{
  background:var(--brand-ink);
  color:#fff;
  box-shadow:var(--sh-1);
}
.btn-primary:hover{background:var(--brand-ink-soft);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{
  background:transparent;
  border-color:rgba(255,255,255,.65);
  color:#fff;
}
.btn-outline:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff}
.btn-ghost{
  background:transparent;
  border-color:var(--brand-ink);
  color:var(--brand-ink);
}
.btn-ghost:hover{background:var(--brand-wash);color:var(--brand-ink)}
.btn-accent{
  background:var(--accent);
  color:#fff;
}
.btn-accent:hover{background:#C9754F;color:#fff;transform:translateY(-1px)}
.btn-lg{height:52px;padding:0 30px;font-size:16px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1040;
  background:rgba(255,255,255,.93);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:0 4px 20px rgba(20,25,28,.08)}
.nav-inner{display:flex;align-items:center;gap:18px;min-height:74px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;
  border-radius:11px;
  background:linear-gradient(140deg,var(--brand-ink) 0%,var(--brand-ink-soft) 100%);
  color:#fff;
  display:grid;place-items:center;
  font-size:17px;
  font-weight:700;
  letter-spacing:.5px;
}
.brand-name{
  font-size:19px;
  font-weight:700;
  color:var(--text);
  letter-spacing:.2px;
  white-space:nowrap;
}
.brand:hover .brand-name{color:var(--brand-ink)}

.nav-search{
  flex:0 1 420px;
  display:flex;
  align-items:center;
  height:46px;
  padding:0 5px 0 16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{
  border-color:var(--brand-ink);
  box-shadow:0 0 0 3px rgba(23,96,90,.12),var(--sh-1);
}
.nav-search .search-icon{color:var(--text-3);font-size:15px;flex:0 0 auto}
.nav-search input{
  flex:1 1 auto;
  min-width:0;
  height:100%;
  border:0;
  background:transparent;
  outline:none;
  padding:0 10px;
  font-size:15px;
  color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search button{
  flex:0 0 auto;
  height:36px;
  padding:0 18px;
  border:0;
  border-radius:var(--r-pill);
  background:var(--brand-ink);
  color:#fff;
  font-size:14px;
  font-weight:600;
  transition:background .2s ease;
}
.nav-search button:hover{background:var(--brand-ink-soft)}

.nav-links{margin-left:auto;display:flex;align-items:center;gap:2px}
.nav-links a{
  display:inline-block;
  font-size:15px;
  color:var(--text-2);
  padding:8px 12px;
  border-radius:10px;
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:var(--brand-ink);background:var(--brand-wash);text-decoration:none}
.nav-links a.active{color:var(--brand-ink);background:var(--brand-wash);font-weight:600}
.btn-nav-cta{
  margin-left:10px;
  height:40px;
  padding:0 20px;
  border-radius:var(--r-pill);
  background:var(--brand-ink);
  color:#fff;
  font-size:15px;
  font-weight:600;
  display:inline-flex;
  align-items:center;
  transition:background .2s ease,transform .2s ease;
}
.btn-nav-cta:hover{background:var(--brand-ink-soft);color:#fff;text-decoration:none;transform:translateY(-1px)}

.nav-toggle{
  display:none;
  margin-left:auto;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:12px;
  background:var(--surface);
  color:var(--text);
  font-size:17px;
  align-items:center;
  justify-content:center;
}
.nav-toggle:hover{border-color:var(--brand-ink);color:var(--brand-ink)}

.mobile-search-row{display:none;padding-bottom:14px}
.mobile-search-row .nav-search{flex:1 1 auto;max-width:none}

.mobile-menu{
  display:none;
  border-top:1px solid var(--line);
  background:var(--surface);
  padding:14px 0 22px;
}
.mobile-menu.open{display:block}
.mobile-menu a{
  display:block;
  padding:13px 4px;
  font-size:16px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.mobile-menu a:hover{color:var(--brand-ink);text-decoration:none}
.mobile-menu a.active{color:var(--brand-ink);font-weight:600}
.mobile-menu .btn{width:100%;margin-top:18px}

/* ============ Hero ============ */
.hero{position:relative;background:var(--dark);overflow:hidden}
.hero-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:.58;
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(10,35,32,.94) 0%,rgba(16,49,45,.82) 42%,rgba(16,49,45,.42) 100%);
}
.hero-inner{position:relative;z-index:2;padding:104px 0 92px}
.hero-content{max-width:680px;color:#fff}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:1px;
  color:#CFE4DE;
  border:1px solid rgba(207,228,222,.4);
  border-radius:var(--r-pill);
  padding:5px 16px;
  margin-bottom:20px;
}
.hero h1{color:#fff;margin-bottom:20px}
.hero-sub{
  font-size:17px;
  line-height:1.85;
  color:#C6DAD5;
  max-width:600px;
  margin-bottom:32px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
  padding-top:28px;
  border-top:1px solid rgba(207,228,222,.22);
}
.stat-num{
  display:block;
  font-size:30px;
  font-weight:700;
  line-height:1.15;
  color:var(--accent);
  letter-spacing:.5px;
}
.stat-label{
  display:block;
  margin-top:6px;
  font-size:14px;
  color:#B8CEC8;
  line-height:1.6;
}

/* ============ 品牌主张（错落文字块） ============ */
.claim-grid{display:grid;grid-template-columns:300px 1fr;gap:56px;align-items:start}
.claim-aside h2{margin-bottom:16px}
.claim-aside p{font-size:16px;color:var(--text-2)}
.claim-blocks{display:grid;grid-template-columns:1fr 1fr;gap:44px 40px}
.claim-block{border-top:1px solid var(--line);padding-top:22px}
.claim-block:nth-child(even){margin-top:48px}
.claim-num{
  display:block;
  font-size:13px;
  font-weight:700;
  letter-spacing:1.6px;
  color:var(--accent);
  margin-bottom:12px;
}
.claim-block h3{margin-bottom:10px}
.claim-block p{font-size:16px;color:var(--text-2);line-height:1.8}

/* ============ 内容说明（图文分栏） ============ */
.story-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:64px;align-items:center}
.story-media{position:relative}
.story-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  background:var(--brand-wash);
}
.story-media::before{
  content:"";
  position:absolute;
  left:-18px;
  bottom:-18px;
  width:150px;
  height:150px;
  border-radius:20px;
  background:var(--accent-wash);
  z-index:-1;
}
.story-text h2{margin-bottom:18px}
.story-text p{font-size:16.5px;color:var(--text-2);margin-bottom:18px}
.story-text .link-more{margin-top:6px}

/* ============ 精选内容卡（1 大 2 小） ============ */
.feature-grid{display:grid;grid-template-columns:1.32fr 1fr;gap:24px;align-items:start}
.feature-card{
  display:block;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.feature-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--sh-2);
  border-color:rgba(23,96,90,.35);
  text-decoration:none;
}
.feature-card:hover h3{color:var(--brand-ink)}
.feature-media{background:var(--brand-wash);overflow:hidden}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.feature-card:hover .feature-media img{transform:scale(1.03)}
.feature-card-lg .feature-media{aspect-ratio:16/10}
.feature-card-lg .feature-body{padding:26px 28px 28px}
.feature-body{padding:20px 22px 22px}
.feature-body h3{margin:12px 0 10px;transition:color .22s ease}
.feature-body p{font-size:15.5px;color:var(--text-2);line-height:1.8}
.feature-card-lg .feature-body p{font-size:16px}
.feature-card .meta{
  display:block;
  margin-top:14px;
  font-size:13.5px;
  color:var(--text-3);
  letter-spacing:.3px;
}
.feature-side{display:grid;gap:24px}
.feature-side .feature-card{display:flex;align-items:stretch}
.feature-side .feature-media{flex:0 0 150px;aspect-ratio:auto}
.feature-side .feature-body{flex:1 1 auto;padding:18px 20px 18px}
.feature-side .feature-body h3{font-size:17px;margin:8px 0 8px}
.feature-side .feature-body p{
  font-size:14.5px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}

/* ============ 最新发布（CMS 列表） ============ */
.news-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0 44px;
}
.news-card{border-bottom:1px solid var(--line);padding:22px 0}
.news-link{display:block}
.news-link:hover{text-decoration:none}
.news-link:hover h3{color:var(--brand-ink)}
.news-card h3{
  font-size:17.5px;
  margin-bottom:10px;
  transition:color .22s ease;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card p{
  font-size:15px;
  color:var(--text-2);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:14px;
}
.news-meta{display:flex;align-items:center;gap:14px;font-size:13.5px;color:var(--text-3)}
.news-meta .tag{font-size:12.5px;padding:2px 11px}
.empty-state{
  grid-column:1/-1;
  min-height:220px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:12px;
  color:var(--text-3);
  text-align:center;
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  padding:40px 20px;
}
.empty-state i{font-size:44px;color:var(--text-3)}
.empty-state p{font-size:16px;color:var(--text-3)}
.empty-state a{font-size:15px;font-weight:600}

/* ============ 信任背书 ============ */
.trust{background:var(--surface);padding:56px 0}
.trust-row{
  display:grid;
  grid-template-columns:repeat(5,minmax(0,1fr));
  gap:20px;
}
.trust-item{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.6;
  padding:14px 16px;
  border:1px solid var(--line);
  border-radius:12px;
  background:var(--bg);
}
.trust-item i{color:var(--brand-ink);font-size:17px;flex:0 0 auto}

/* ============ 深色 CTA 条 ============ */
.cta-band{background:var(--dark);color:var(--dark-text);padding:64px 0}
.cta-inner{display:grid;grid-template-columns:1fr auto;gap:36px;align-items:center}
.cta-text h2{color:#fff;margin-bottom:12px}
.cta-text p{color:#B8CEC8;font-size:16px;max-width:560px}
.cta-form{display:flex;gap:12px;flex-wrap:wrap}
.cta-form input{
  height:50px;
  min-width:270px;
  flex:1 1 270px;
  padding:0 18px;
  border-radius:var(--r-btn);
  border:1px solid rgba(207,228,222,.35);
  background:rgba(255,255,255,.06);
  color:#fff;
  font-size:15px;
  outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.cta-form input::placeholder{color:#8FA9A3}
.cta-form input:focus{
  border-color:#7FC8B8;
  background:rgba(255,255,255,.1);
  box-shadow:0 0 0 3px rgba(127,200,184,.2);
}
.cta-form .btn{height:50px;padding:0 30px;font-size:16px}

/* ============ FAQ 手风琴 ============ */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-wrap .section-head{margin-bottom:28px}
.accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
}
.accordion-item:first-child{border-top:1px solid var(--line)}
.accordion-header{margin:0}
.accordion-button{
  position:relative;
  width:100%;
  background:transparent;
  border:0;
  box-shadow:none;
  padding:22px 52px 22px 16px;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  line-height:1.6;
  text-align:left;
  transition:color .2s ease,background .2s ease;
}
.accordion-button::after{display:none}
.accordion-button::before{
  content:"\f067";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;
  right:18px;
  top:50%;
  transform:translateY(-50%);
  font-size:14px;
  color:var(--brand-ink);
  transition:transform .25s ease;
}
.accordion-button:not(.collapsed){color:var(--brand-ink);background:transparent}
.accordion-button:not(.collapsed)::before{transform:translateY(-50%) rotate(45deg)}
.accordion-button:hover{color:var(--brand-ink);background:rgba(230,240,237,.5)}
.accordion-button:focus{box-shadow:none;outline:3px solid rgba(23,96,90,.18);outline-offset:-2px}
.accordion-button:not(.collapsed) + .accordion-collapse .accordion-body{
  border-left:3px solid var(--brand-ink);
}
.accordion-body{
  padding:2px 52px 24px 19px;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
}
.accordion-collapse{border:0}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:var(--dark-text);padding:72px 0 0}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:48px 40px;
  padding-bottom:52px;
}
.footer-brand .brand{margin-bottom:18px}
.footer-brand .brand-mark{background:rgba(255,255,255,.1)}
.footer-brand .brand-name{color:#fff;font-size:18px}
.footer-brand p{font-size:15px;color:#A9C2BC;line-height:1.8;margin-bottom:22px;max-width:340px}
.footer-search{display:flex;align-items:center;max-width:320px;height:44px;padding:0 5px 0 14px;border:1px solid rgba(207,228,222,.25);border-radius:var(--r-pill);background:rgba(255,255,255,.05)}
.footer-search input{flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;color:#fff;font-size:14px;padding:0 10px;height:100%}
.footer-search input::placeholder{color:#8FA9A3}
.footer-search button{border:0;height:34px;padding:0 16px;border-radius:var(--r-pill);background:var(--brand-ink);color:#fff;font-size:13.5px;font-weight:600}
.footer-search button:hover{background:var(--brand-ink-soft)}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:600;letter-spacing:.3px}
.footer-col li{margin-bottom:11px}
.footer-col a,.footer-col span{font-size:14.5px;color:#C9D8D4;display:inline-block;transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:#fff;text-decoration:none;transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid rgba(207,228,222,.16);
  padding:22px 0 26px;
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  align-items:center;
  justify-content:space-between;
  font-size:14px;
  color:#8FA9A3;
}
.footer-bottom a{color:#8FA9A3}
.footer-bottom a:hover{color:#fff;text-decoration:none}
.footer-bottom .policy{display:flex;gap:24px;flex-wrap:wrap}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-links,.nav-search,.btn-nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .mobile-search-row{display:block}
}
@media (max-width:991px){
  .hero-inner{padding:76px 0 68px}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .claim-grid{grid-template-columns:1fr;gap:32px}
  .claim-aside{max-width:620px}
  .story-grid{grid-template-columns:1fr;gap:40px}
  .story-media::before{display:none}
  .feature-grid{grid-template-columns:1fr;gap:24px}
  .feature-side{grid-template-columns:1fr 1fr;gap:24px}
  .news-grid{grid-template-columns:1fr;gap:0}
  .trust-row{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-inner{grid-template-columns:1fr;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .footer-brand{grid-column:1/-1}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
}
@media (max-width:767px){
  .feature-side{grid-template-columns:1fr}
  .feature-side .feature-media{flex:0 0 120px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
}
@media (max-width:575px){
  body{font-size:16px;line-height:1.8}
  .wrap{padding:0 16px}
  .hero-inner{padding:56px 0 52px}
  .hero h1{font-size:27px}
  .hero-sub{font-size:16px}
  .hero-cta{gap:12px}
  .hero-cta .btn{width:100%}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .stat-num{font-size:25px}
  .trust-row{grid-template-columns:1fr}
  .claim-blocks{grid-template-columns:1fr;gap:28px}
  .claim-block:nth-child(even){margin-top:0}
  .cta-form input{min-width:0;flex:1 1 100%}
  .cta-form .btn{width:100%}
  .accordion-button{font-size:16px;padding:18px 46px 18px 14px}
  .accordion-body{padding:2px 20px 20px 17px;font-size:15.5px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: article */
:root{
  --brand-ink:#17605A;
  --brand-ink-soft:#2C7F74;
  --brand-wash:#E6F0ED;
  --accent:#D9865F;
  --accent-wash:#FBEDE4;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E4DFD4;
  --text:#14191C;
  --text-2:#5A6360;
  --text-3:#8A928E;
  --dark:#10312D;
  --dark-text:#EAF2EF;
  --radius-card:16px;
  --radius-btn:12px;
  --shadow-sm:0 2px 10px rgba(20,25,28,.05);
  --shadow-md:0 10px 26px rgba(20,25,28,.10);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-serif:"Source Han Serif SC","Songti SC","STSong",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-ink);text-decoration:none;transition:color .2s ease,background-color .2s ease}
a:hover{color:var(--brand-ink-soft)}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);letter-spacing:.2px}
p{margin:0}
button,input{font:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(23,96,90,.28);outline-offset:2px;border-radius:6px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-btn);border:1px solid transparent;font-weight:600;cursor:pointer;transition:all .22s ease;text-decoration:none}
.btn-primary{background:var(--brand-ink);color:#fff;height:46px;padding:0 22px}
.btn-primary:hover{background:var(--brand-ink-soft);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm)}
.btn-ghost{background:transparent;color:var(--brand-ink);border-color:var(--brand-ink);height:46px;padding:0 22px}
.btn-ghost:hover{background:var(--brand-wash);color:var(--brand-ink)}
.btn-lg{height:52px;padding:0 28px;font-size:17px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,245,240,.94);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,padding .25s ease;
}
.site-header.scrolled{box-shadow:var(--shadow-sm);background:rgba(255,255,255,.94)}
.header-inner{display:flex;align-items:center;gap:18px;min-height:78px}
.site-header.scrolled .header-inner{min-height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--brand-ink);color:#fff;
  display:grid;place-items:center;font-weight:700;font-size:17px;letter-spacing:0;
}
.brand-name{font-size:17px;font-weight:700;color:var(--text);white-space:nowrap}
.brand:hover .brand-name{color:var(--brand-ink)}
.nav-search{
  position:relative;flex:1 1 auto;max-width:520px;
  display:flex;align-items:center;gap:8px;
  height:48px;padding:0 6px 0 16px;
  background:var(--surface);border:1px solid var(--line);border-radius:999px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:hover{border-color:#d5cec0}
.nav-search:focus-within{border-color:var(--brand-ink);box-shadow:0 0 0 3px rgba(23,96,90,.14),var(--shadow-sm)}
.nav-search svg{flex:0 0 auto;width:18px;height:18px;stroke:var(--text-3);fill:none;stroke-width:1.8}
.nav-search input{
  flex:1 1 auto;min-width:0;height:100%;border:0;background:transparent;outline:none;font-size:15px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search button{
  flex:0 0 auto;height:36px;padding:0 18px;border:0;border-radius:10px;
  background:var(--brand-ink);color:#fff;font-size:15px;font-weight:600;cursor:pointer;transition:background .2s ease;
}
.nav-search button:hover{background:var(--brand-ink-soft)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  padding:9px 12px;border-radius:10px;font-size:15px;font-weight:500;color:var(--text-2);white-space:nowrap;
}
.nav-links a:hover{background:var(--brand-wash);color:var(--brand-ink)}
.nav-links a.active{background:var(--brand-wash);color:var(--brand-ink);font-weight:600}
.nav-links .btn-nav-cta{
  margin-left:8px;background:var(--brand-ink);color:#fff;padding:10px 18px;font-weight:600;
}
.nav-links .btn-nav-cta:hover{background:var(--brand-ink-soft);color:#fff}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--line);
  border-radius:12px;background:var(--surface);cursor:pointer;place-items:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ============ 文章页头 ============ */
.article-head{
  position:relative;color:#fff;padding:34px 0 96px;
  background-image:linear-gradient(180deg,rgba(16,49,45,.74),rgba(16,49,45,.80)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.article-head .crumb{font-size:14px;color:rgba(234,242,239,.78);display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:18px}
.article-head .crumb a{color:rgba(234,242,239,.82)}
.article-head .crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.article-head .crumb .sep{opacity:.5}
.article-head .crumb .current{color:#fff;max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head h1{
  color:#fff;font-size:40px;line-height:1.25;font-weight:700;max-width:900px;margin-bottom:18px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:14px;color:rgba(234,242,239,.82)}
.article-meta .chip{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  background:rgba(230,240,237,.16);color:#EAF2EF;font-size:13px;font-weight:600;border:1px solid rgba(230,240,237,.28);
}
.article-meta .dot{width:1px;height:14px;background:rgba(234,242,239,.35)}

/* ============ 主体布局 ============ */
.article-main{margin-top:-64px;padding-bottom:88px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px;align-items:start}
.article-shell{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:44px 48px 40px;box-shadow:var(--shadow-sm);
}
.article-body{max-width:780px;font-size:17px;line-height:1.9;color:var(--text);overflow-wrap:break-word}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.4em;color:#232A2C}
.article-body h2{
  font-size:27px;line-height:1.35;margin:44px 0 16px;padding-left:14px;
  border-left:3px solid var(--brand-ink);scroll-margin-top:104px;
}
.article-body h3{font-size:20px;line-height:1.45;margin:30px 0 12px;color:var(--text);scroll-margin-top:104px}
.article-body h4{font-size:17px;margin:22px 0 10px;color:var(--brand-ink)}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.4em}
.article-body li{margin-bottom:8px;line-height:1.85}
.article-body li::marker{color:var(--brand-ink)}
.article-body blockquote{
  margin:26px 0;padding:20px 22px;background:var(--brand-wash);
  border-left:3px solid var(--brand-ink);border-radius:0 12px 12px 0;
  font-family:var(--font-serif);color:#2A3B38;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:26px auto;max-width:100%}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;line-height:1.7}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.article-body th{background:var(--brand-wash);color:var(--brand-ink);font-weight:600}
.article-body tr:nth-child(even) td{background:#FCFBF8}
.article-body code{
  background:var(--brand-wash);color:var(--brand-ink);padding:2px 6px;border-radius:6px;font-size:15px;
}
.article-body a{border-bottom:1px solid rgba(23,96,90,.35)}
.article-body a:hover{border-bottom-color:var(--brand-ink-soft)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-body .table-scroll{overflow-x:auto}
.article-empty{
  min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  text-align:center;color:var(--text-2);
}
.article-empty svg{width:48px;height:48px;stroke:var(--text-3);fill:none;stroke-width:1.6}
.article-empty a{font-weight:600}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 22px 18px;box-shadow:var(--shadow-sm);
}
.side-title{
  font-size:15px;font-weight:700;color:var(--brand-ink);margin-bottom:14px;
  display:flex;align-items:center;gap:8px;letter-spacing:.4px;
}
.side-title::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--accent)}
.toc-list{list-style:none;margin:0;padding:0}
.toc-list li{margin:0}
.toc-list a{
  display:block;padding:7px 0 7px 12px;font-size:14px;line-height:1.6;color:var(--text-2);
  border-left:2px solid var(--line);transition:all .2s ease;
}
.toc-list a:hover{color:var(--brand-ink);border-left-color:var(--brand-ink-soft);background:var(--brand-wash)}
.toc-list a.lv3{padding-left:24px;font-size:13.5px}
.toc-list a.current{color:var(--brand-ink);border-left-color:var(--brand-ink);font-weight:600}
.side-note{font-size:13.5px;color:var(--text-3);line-height:1.7}
.mini-list{display:flex;flex-direction:column;gap:14px}
.mini-item{display:flex;gap:12px;align-items:flex-start}
.mini-item img{width:72px;height:60px;object-fit:cover;border-radius:10px;flex:0 0 auto;background:var(--brand-wash)}
.mini-item h3{font-size:14.5px;line-height:1.5;font-weight:600;margin-bottom:4px}
.mini-item h3 a{color:var(--text)}
.mini-item h3 a:hover{color:var(--brand-ink)}
.mini-item .mini-meta{font-size:12.5px;color:var(--text-3)}

/* ============ 文末区块 ============ */
.article-foot{margin-top:40px;padding-top:28px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  background:var(--brand-wash);color:var(--brand-ink);font-size:13.5px;font-weight:500;
}
.tag.accent{background:var(--accent-wash);color:#B4673F}
.pager-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-bottom:24px}
.pager-card{
  display:block;padding:18px 20px;border:1px solid var(--line);border-radius:14px;
  background:#FCFBF8;transition:all .22s ease;
}
.pager-card:hover{border-color:rgba(23,96,90,.35);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.pager-card .k{font-size:13px;color:var(--text-3);display:block;margin-bottom:6px}
.pager-card .t{font-size:15.5px;font-weight:600;color:var(--text);line-height:1.5}
.pager-card:hover .t{color:var(--brand-ink)}
.back-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px}
.back-link span{transition:transform .2s ease}
.back-link:hover span{transform:translateX(3px)}

/* ============ 相关内容 ============ */
.section{padding:80px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-head h2{font-size:28px;line-height:1.3}
.section-head p{font-size:15px;color:var(--text-2);margin-top:8px}
.section-head .more{font-size:15px;font-weight:600;white-space:nowrap}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);transition:all .22s ease;height:100%;
}
.card:hover{transform:translateY(-3px);border-color:rgba(23,96,90,.35);box-shadow:var(--shadow-md)}
.card-cover{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--brand-wash)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.card-body h3{font-size:18px;line-height:1.5;font-weight:600}
.card-body h3 a{color:var(--text)}
.card:hover .card-body h3 a{color:var(--brand-ink)}
.card-body p{font-size:14.5px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;font-size:13px;color:var(--text-3);display:flex;gap:10px;align-items:center}

/* ============ 深色 CTA ============ */
.cta-band{background:var(--dark);color:var(--dark-text);padding:56px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{color:#fff;font-size:26px;line-height:1.35;margin-bottom:10px}
.cta-inner p{color:rgba(234,242,239,.78);font-size:15px;max-width:560px}
.cta-form{display:flex;gap:12px;flex-wrap:wrap}
.cta-form input{
  height:48px;min-width:260px;padding:0 16px;border-radius:var(--radius-btn);
  border:1px solid rgba(234,242,239,.35);background:rgba(255,255,255,.06);color:#fff;outline:none;
}
.cta-form input::placeholder{color:rgba(234,242,239,.6)}
.cta-form input:focus{border-color:#8FC9BE;box-shadow:0 0 0 3px rgba(143,201,190,.22)}
.cta-form button{
  height:48px;padding:0 26px;border:0;border-radius:var(--radius-btn);background:var(--accent);
  color:#fff;font-weight:600;cursor:pointer;transition:all .22s ease;
}
.cta-form button:hover{background:#C9754F;transform:translateY(-1px)}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:var(--dark-text);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-mark{background:#1C4A44;color:#EAF2EF}
.footer-brand p{font-size:14.5px;line-height:1.8;color:rgba(234,242,239,.72);max-width:340px}
.footer-search{display:flex;gap:8px;margin-top:18px;max-width:340px}
.footer-search input{
  flex:1 1 auto;min-width:0;height:44px;padding:0 14px;border-radius:12px;
  border:1px solid rgba(234,242,239,.28);background:rgba(255,255,255,.06);color:#fff;outline:none;font-size:14px;
}
.footer-search input::placeholder{color:rgba(234,242,239,.55)}
.footer-search input:focus{border-color:#8FC9BE;box-shadow:0 0 0 3px rgba(143,201,190,.2)}
.footer-search button{
  height:44px;padding:0 18px;border:0;border-radius:12px;background:var(--brand-ink-soft);
  color:#fff;font-weight:600;cursor:pointer;transition:background .2s ease;
}
.footer-search button:hover{background:#37968A}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:11px;font-size:14px}
.footer-col a,.footer-col span{color:#C9D8D4;font-size:14px;transition:all .2s ease;display:inline-block}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(234,242,239,.16);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(234,242,239,.62);
}
.footer-bottom .policy{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom .policy a{color:rgba(234,242,239,.72)}
.footer-bottom .policy a:hover{color:#fff}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .header-inner{gap:14px}
  .nav-links a{padding:8px 10px;font-size:14.5px}
}
@media (max-width:991px){
  .header-inner{flex-wrap:wrap;padding-top:12px;padding-bottom:12px;gap:12px;min-height:auto}
  .site-header.scrolled .header-inner{min-height:auto}
  .nav-toggle{display:grid}
  .nav-search{order:5;flex:1 0 100%;max-width:100%;margin-top:2px}
  .nav-links.collapse{
    order:6;flex:1 0 100%;flex-direction:column;align-items:stretch;gap:2px;
    margin-left:0;padding:10px 0 6px;border-top:1px solid var(--line);
  }
  .nav-links.collapse a{padding:12px 10px;border-radius:10px;font-size:15px}
  .nav-links .btn-nav-cta{margin-left:0;margin-top:8px;text-align:center;justify-content:center}
  .article-head{padding:28px 0 88px}
  .article-head h1{font-size:30px}
  .article-shell{padding:30px 26px 28px}
  .article-layout{grid-template-columns:1fr;gap:24px}
  .article-side{position:static}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}
  .section{padding:64px 0}
}
@media (min-width:992px){
  .nav-links.collapse{display:flex !important;height:auto !important;visibility:visible !important}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8}
  .wrap{padding:0 18px}
  .article-main{margin-top:-52px;padding-bottom:64px}
  .article-head{padding:22px 0 78px}
  .article-head h1{font-size:26px}
  .article-head .crumb .current{max-width:100%;white-space:normal}
  .article-body{font-size:16px}
  .article-body h2{font-size:22px;margin-top:34px}
  .article-body h3{font-size:18px}
  .article-shell{padding:24px 20px;border-radius:14px}
  .pager-row{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .section{padding:52px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-grid{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-form{width:100%}
  .cta-form input{min-width:0;flex:1 1 100%}
  .cta-form button{flex:1 1 100%}
  .article-body table{font-size:14px}
}
@media (max-width:575px){
  .brand-name{font-size:15.5px}
  .article-head h1{font-size:23px}
  .card-body{padding:18px 18px 20px}
}

/* roulang page: category1 */
:root{
  --brand-ink:#17605A;
  --brand-ink-soft:#2C7F74;
  --brand-wash:#E6F0ED;
  --accent:#D9865F;
  --accent-ink:#B4663F;
  --accent-wash:#FBEDE4;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E4DFD4;
  --text:#14191C;
  --text-2:#5A6360;
  --text-3:#8A928E;
  --deep:#10312D;
  --r-card:16px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-1:0 2px 10px rgba(20,25,28,.05);
  --sh-2:0 10px 26px rgba(20,25,28,.10);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Source Han Serif SC","Songti SC",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--text)}
p{margin:0 0 1.4em}
ul{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:var(--brand-ink);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-ink-soft);text-decoration:underline;text-underline-offset:3px}
button,input{font-family:inherit}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* ---------- 按钮 ---------- */
.btn-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 26px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:background .22s ease,color .22s ease,transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  text-decoration:none;
}
.btn-c.primary{background:var(--brand-ink);color:#fff;box-shadow:var(--sh-1)}
.btn-c.primary:hover{background:var(--brand-ink-soft);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);text-decoration:none}
.btn-c.primary:active{transform:translateY(0)}
.btn-c.ghost{background:transparent;color:var(--brand-ink);border-color:var(--brand-ink)}
.btn-c.ghost:hover{background:var(--brand-wash);color:var(--brand-ink);text-decoration:none}
.btn-c.on-dark{background:#EAF2EF;color:var(--deep)}
.btn-c.on-dark:hover{background:#fff;color:var(--deep);text-decoration:none;transform:translateY(-1px)}
.btn-c.sm{height:44px;padding:0 20px;font-size:15px}
.btn-c:focus-visible{outline:3px solid rgba(23,96,90,.25);outline-offset:2px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-1)}
.header-top{display:flex;align-items:center;gap:24px;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:var(--brand-ink);color:#fff;
  display:grid;place-items:center;font-size:17px;font-weight:700;
}
.brand-name{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.2px}
.brand:hover .brand-name{color:var(--brand-ink)}

.nav-search{
  position:relative;flex:1 1 auto;max-width:470px;
  display:flex;align-items:center;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-pill);padding:4px 4px 4px 16px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--brand-ink);box-shadow:0 0 0 3px rgba(23,96,90,.22)}
.nav-search i{color:var(--text-3);font-size:15px}
.nav-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  height:42px;padding:0 10px;font-size:15px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search button{
  height:42px;padding:0 22px;border:0;border-radius:var(--r-pill);
  background:var(--brand-ink);color:#fff;font-size:15px;font-weight:600;
  cursor:pointer;transition:background .2s ease;
}
.nav-search button:hover{background:var(--brand-ink-soft)}
.nav-search button:focus-visible{outline:3px solid rgba(23,96,90,.25);outline-offset:2px}

.nav-links{display:flex;align-items:center;gap:26px;flex-wrap:wrap;padding:0 0 12px}
.nav-links a{
  position:relative;font-size:15px;color:var(--text-2);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand-ink);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-links a:hover{color:var(--brand-ink);text-decoration:none}
.nav-links a:hover::after,
.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--brand-ink);font-weight:600}
.nav-links .btn-nav-cta{
  display:inline-flex;align-items:center;height:40px;padding:0 20px;
  border-radius:var(--r-btn);background:var(--brand-ink);color:#fff;
  font-size:15px;font-weight:600;
}
.nav-links .btn-nav-cta::after{display:none}
.nav-links .btn-nav-cta:hover{background:var(--brand-ink-soft);color:#fff;text-decoration:none;transform:translateY(-1px)}
.nav-toggle{
  display:none;width:44px;height:44px;flex:0 0 auto;
  border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--surface);color:var(--text);font-size:18px;cursor:pointer;
}
.nav-toggle:focus-visible{outline:3px solid rgba(23,96,90,.25);outline-offset:2px}
.mobile-nav{border-top:1px solid var(--line);background:var(--surface)}
.mobile-inner{display:flex;flex-direction:column;padding:8px 20px 22px}
.mobile-inner a{padding:13px 0;border-bottom:1px solid var(--line);font-size:16px;color:var(--text-2)}
.mobile-inner a.active{color:var(--brand-ink);font-weight:600}
.mobile-inner .btn-c{margin-top:16px;border-bottom:0;justify-content:center}
.mobile-inner .btn-c:hover{text-decoration:none}

/* ---------- 分类页页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(16,49,45,.86) 0%,rgba(23,96,90,.66) 100%);
}
.hero-inner{position:relative;padding:40px 0 54px;max-width:1200px}
.breadcrumb-bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:14px;color:rgba(255,255,255,.78);margin-bottom:18px}
.breadcrumb-bar a{color:rgba(255,255,255,.78)}
.breadcrumb-bar a:hover{color:#fff}
.breadcrumb-bar .sep{opacity:.6}
.breadcrumb-bar .current{color:#fff;font-weight:600}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;
  border-radius:var(--r-pill);background:var(--accent-wash);color:var(--accent-ink);
  font-size:14px;font-weight:600;margin-bottom:16px;
}
.page-hero h1{color:#fff;font-size:40px;max-width:900px;letter-spacing:.2px}
.page-hero .hero-desc{
  color:rgba(255,255,255,.86);font-size:16.5px;max-width:720px;margin:16px 0 26px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-actions .btn-c.ghost{color:#fff;border-color:rgba(255,255,255,.6)}
.hero-actions .btn-c.ghost:hover{background:rgba(255,255,255,.14);color:#fff}
.hero-actions .btn-c.primary{background:#fff;color:var(--brand-ink)}
.hero-actions .btn-c.primary:hover{background:#EAF2EF;color:var(--brand-ink)}

/* ---------- 筛选条 ---------- */
.filter-strip{background:var(--surface);border-bottom:1px solid var(--line);padding:16px 0}
.chip-row{display:flex;gap:12px;overflow-x:auto;padding-bottom:2px;scrollbar-width:thin}
.chip-row::-webkit-scrollbar{height:5px}
.chip-row::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px}
.chip{
  white-space:nowrap;display:inline-flex;align-items:center;gap:6px;
  height:38px;padding:0 18px;border-radius:var(--r-pill);
  background:var(--brand-wash);color:var(--brand-ink);font-size:14.5px;
  border:1px solid transparent;transition:background .2s ease,color .2s ease;
}
.chip:hover{background:#D8E9E5;color:var(--brand-ink);text-decoration:none}
.chip.is-current{background:var(--brand-ink);color:#fff}
.chip.is-current:hover{background:var(--brand-ink-soft);color:#fff}
.filter-note{font-size:14px;color:var(--text-3);margin:12px 0 0}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section.tight{padding:64px 0}
.section.on-white{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:34px}
.section-head h2{font-size:28px}
.section-head p{color:var(--text-2);font-size:16px;max-width:660px;margin:10px 0 0}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:14px;color:var(--brand-ink);font-weight:600;margin-bottom:10px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}

/* ---------- 功能条目列表 ---------- */
.entry-list{border-top:1px solid var(--line)}
.entry{
  display:grid;grid-template-columns:190px 1fr;gap:28px;
  padding:26px 0;border-bottom:1px solid var(--line);
  transition:background .22s ease;
}
.entry-media{
  width:100%;aspect-ratio:4/3;border-radius:12px;overflow:hidden;
  background:linear-gradient(135deg,var(--brand-wash),#F1F6F4);
  border:1px solid var(--line);position:relative;
}
.entry-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.entry:hover .entry-media img{transform:scale(1.03)}
.entry-title{font-size:20px;margin-bottom:8px;transition:color .2s ease}
.entry:hover .entry-title{color:var(--brand-ink)}
.entry-text{color:var(--text-2);font-size:15.5px;margin:0 0 14px}
.entry-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;font-size:14px;color:var(--text-3)}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--brand-wash);color:var(--brand-ink);
  font-size:13.5px;font-weight:600;
}
.tag.accent{background:var(--accent-wash);color:var(--accent-ink)}
.dot-sep{width:4px;height:4px;border-radius:50%;background:var(--line);display:inline-block}

/* ---------- 指标条 ---------- */
.metric-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.metric{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.metric:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(23,96,90,.35)}
.metric strong{display:block;font-size:32px;line-height:1.2;color:var(--accent);font-weight:700}
.metric .metric-label{font-size:14.5px;color:var(--text-2);display:block;margin-top:6px}
.metric .metric-note{font-size:14px;color:var(--text-3);display:block;margin-top:8px}

/* ---------- 场景图文 ---------- */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.scene + .scene{margin-top:72px}
.scene.reverse .scene-media{order:2}
.scene-media{
  position:relative;aspect-ratio:4/3;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh-1);
  background:linear-gradient(135deg,var(--brand-wash),#F1F6F4);
}
.scene-media img{width:100%;height:100%;object-fit:cover}
.scene-body h3{font-size:22px;margin-bottom:12px}
.scene-body p{color:var(--text-2);font-size:16px}
.scene-list{margin-top:6px}
.scene-list li{
  position:relative;padding-left:20px;color:var(--text-2);font-size:15.5px;
  margin-bottom:8px;
}
.scene-list li::before{
  content:"";position:absolute;left:0;top:12px;width:7px;height:7px;
  border-radius:50%;background:var(--brand-ink);
}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(23,96,90,.35)}
.step-idx{
  width:42px;height:42px;border-radius:12px;background:var(--brand-wash);
  color:var(--brand-ink);display:grid;place-items:center;font-weight:700;font-size:15px;
  margin-bottom:14px;
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{color:var(--text-2);font-size:15px;margin:0}

/* ---------- FAQ ---------- */
.faq{max-width:900px}
.faq .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0}
.faq .accordion-button{
  background:transparent;border:0;border-radius:0 !important;
  padding:22px 48px 22px 16px;font-size:17px;font-weight:600;color:var(--text);
  line-height:1.5;transition:background .2s ease,color .2s ease,box-shadow .2s ease;
}
.faq .accordion-button:not(.collapsed){
  color:var(--brand-ink);background:var(--brand-wash);
  box-shadow:inset 3px 0 0 0 var(--brand-ink);
}
.faq .accordion-button:focus{box-shadow:inset 3px 0 0 0 var(--brand-ink),0 0 0 3px rgba(23,96,90,.2);z-index:2}
.faq .accordion-button::after{
  content:"+";background-image:none;width:26px;height:26px;line-height:24px;
  text-align:center;font-size:22px;color:var(--brand-ink);
  transition:transform .22s ease;
}
.faq .accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.faq .accordion-body{padding:0 48px 24px 16px;color:var(--text-2);font-size:16px;line-height:1.85}

/* ---------- 深色 CTA ---------- */
.cta-dark{background:var(--deep);color:#EAF2EF;padding:76px 0}
.cta-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.cta-dark h2{color:#fff;font-size:28px}
.cta-dark p{color:#C9D8D4;font-size:16px;margin:12px 0 0;max-width:520px}
.cta-form{
  display:flex;gap:12px;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);border-radius:var(--r-card);padding:14px;
}
.cta-form input{
  flex:1;min-width:0;height:50px;padding:0 16px;font-size:15px;
  color:#fff;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.22);border-radius:var(--r-btn);outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.cta-form input::placeholder{color:rgba(234,242,239,.55)}
.cta-form input:focus{border-color:#8FD3C6;box-shadow:0 0 0 3px rgba(143,211,198,.22)}
.cta-form button{
  height:50px;padding:0 24px;border:0;border-radius:var(--r-btn);
  background:var(--accent);color:#2A1208;font-size:16px;font-weight:700;
  cursor:pointer;transition:background .2s ease,transform .2s ease;
}
.cta-form button:hover{background:#E4A181;transform:translateY(-1px)}
.cta-form button:focus-visible{outline:3px solid rgba(217,134,95,.5);outline-offset:2px}
.cta-hint{font-size:14px;color:#9FB8B2;margin:12px 0 0}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:#EAF2EF;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);color:#EAF2EF}
.footer-brand .brand-name{color:#fff;font-weight:700}
.footer-brand .brand:hover .brand-name{color:#fff}
.footer-brand p{color:#C9D8D4;font-size:15px;margin:16px 0 20px;max-width:360px}
.footer-search{
  display:flex;align-items:center;gap:8px;max-width:340px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-pill);padding:4px 4px 4px 16px;
}
.footer-search input{
  flex:1;min-width:0;height:40px;border:0;background:transparent;
  color:#EAF2EF;font-size:14.5px;outline:none;
}
.footer-search input::placeholder{color:rgba(234,242,239,.5)}
.footer-search button{
  height:40px;padding:0 18px;border:0;border-radius:var(--r-pill);
  background:var(--accent);color:#2A1208;font-size:14.5px;font-weight:700;cursor:pointer;
  transition:background .2s ease;
}
.footer-search button:hover{background:#E4A181}
.footer-search:focus-within{border-color:#8FD3C6;box-shadow:0 0 0 3px rgba(143,211,198,.2)}
.footer-col h4{font-size:16px;color:#fff;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{color:#C9D8D4;font-size:15px;display:inline-block;transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:#fff;transform:translateX(2px);text-decoration:none}
.footer-col span{color:#C9D8D4;font-size:15px;display:inline-block}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;
  font-size:14px;color:#9FB8B2;
}
.footer-bottom .policy{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom .policy a{color:#9FB8B2}
.footer-bottom .policy a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .page-hero h1{font-size:36px}
}
@media (max-width:991.98px){
  body{font-size:16.5px}
  .header-top{flex-wrap:wrap;gap:14px}
  .nav-links{display:none}
  .nav-toggle{display:grid;place-items:center;margin-left:auto}
  .nav-search{order:3;flex-basis:100%;max-width:none}
  .page-hero h1{font-size:32px}
  .hero-inner{padding:34px 0 46px}
  .section{padding:64px 0}
  .section.tight{padding:52px 0}
  .metric-strip{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .scene{grid-template-columns:1fr;gap:28px}
  .scene.reverse .scene-media{order:0}
  .scene + .scene{margin-top:56px}
  .cta-grid{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767.98px){
  .entry{grid-template-columns:150px 1fr;gap:20px}
  .page-hero h1{font-size:29px}
  .section-head h2{font-size:24px}
  .cta-dark h2{font-size:24px}
}
@media (max-width:575.98px){
  .wrap{padding:0 16px}
  body{font-size:16px}
  .page-hero h1{font-size:26px;line-height:1.35}
  .hero-actions .btn-c{width:100%}
  .entry{grid-template-columns:1fr;gap:16px;padding:22px 0}
  .entry-media{aspect-ratio:16/9}
  .metric-strip{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta-form{flex-direction:column}
  .cta-form button{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
}

/* roulang page: category3 */
:root{
  --brand-ink:#17605A;
  --brand-ink-soft:#2C7F74;
  --brand-wash:#E6F0ED;
  --accent:#D9865F;
  --accent-wash:#FBEDE4;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E4DFD4;
  --text:#14191C;
  --text-2:#5A6360;
  --text-3:#8A928E;
  --dark:#10312D;
  --dark-text:#EAF2EF;
  --r-card:16px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-1:0 2px 10px rgba(20,25,28,.05);
  --sh-2:0 10px 26px rgba(20,25,28,.10);
  --wrap:1200px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-serif:"Source Han Serif SC","Songti SC",serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-ink);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--brand-ink-soft);text-decoration:underline;text-underline-offset:3px;}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.2px;}
p{margin:0 0 1.4em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(23,96,90,.25);outline-offset:2px;border-radius:6px;}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px;}
.section{padding:92px 0;}
.section-alt{background:var(--surface);}
.section-tight{padding:72px 0;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(247,245,240,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-stuck{
  background:rgba(255,255,255,.95);
  border-bottom-color:var(--line);
  box-shadow:0 4px 18px rgba(20,25,28,.06);
}
.header-top{display:flex;align-items:center;gap:22px;padding:14px 0 10px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;flex:0 0 auto;}
.brand:hover{color:var(--brand-ink);text-decoration:none;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--brand-ink);color:#fff;
  display:grid;place-items:center;font-size:17px;font-weight:700;letter-spacing:0;
}
.brand-name{font-size:18px;}
.nav-search{
  flex:1 1 auto;max-width:540px;display:flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  padding:4px 4px 4px 16px;height:48px;transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--brand-ink);box-shadow:0 0 0 3px rgba(23,96,90,.14),var(--sh-2);}
.nav-search i{color:var(--text-3);font-size:15px;}
.nav-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;padding:0 8px;color:var(--text);font-size:15px;}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search button{
  border:0;background:var(--brand-ink);color:#fff;border-radius:var(--r-pill);
  height:40px;padding:0 20px;font-size:15px;font-weight:600;cursor:pointer;
  transition:background .2s ease,transform .2s ease;
}
.nav-search button:hover{background:var(--brand-ink-soft);}
.nav-search button:active{transform:translateY(1px);}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--line);
  background:#fff;border-radius:12px;cursor:pointer;
  flex-direction:column;gap:4px;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);}
.nav-links{
  display:flex;align-items:center;justify-content:center;gap:6px;
  flex-wrap:wrap;padding:0 0 12px;
}
.nav-links a{
  padding:8px 15px;border-radius:var(--r-pill);font-size:15px;font-weight:500;
  color:var(--text-2);transition:background .2s ease,color .2s ease;
}
.nav-links a:hover{background:var(--brand-wash);color:var(--brand-ink);text-decoration:none;}
.nav-links a.active{background:var(--brand-wash);color:var(--brand-ink);font-weight:600;}
.nav-links a.btn-nav-cta{
  background:var(--brand-ink);color:#fff;padding:9px 20px;font-weight:600;
  box-shadow:var(--sh-1);
}
.nav-links a.btn-nav-cta:hover{background:var(--brand-ink-soft);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;color:#fff;overflow:hidden;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  padding:58px 0 50px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(16,49,45,.86) 0%,rgba(16,49,45,.66) 60%,rgba(16,49,45,.54) 100%);
}
.hero-inner{position:relative;z-index:2;max-width:880px;}
.breadcrumb-nav{
  display:flex;flex-wrap:wrap;gap:8px;align-items:center;
  font-size:14px;color:rgba(234,242,239,.76);margin-bottom:18px;
}
.breadcrumb-nav a{color:rgba(234,242,239,.76);}
.breadcrumb-nav a:hover{color:#fff;text-decoration:underline;}
.breadcrumb-nav .sep{opacity:.6;}
.breadcrumb-nav .cur{color:#fff;font-weight:600;}
.hero-kicker{
  display:inline-block;padding:5px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);
  font-size:14px;letter-spacing:.5px;margin-bottom:16px;
}
.page-hero h1{
  font-size:clamp(26px,3.6vw,42px);line-height:1.28;color:#fff;
  max-width:820px;margin-bottom:16px;
}
.hero-lead{
  font-size:17px;line-height:1.85;color:rgba(234,242,239,.9);
  max-width:720px;margin-bottom:26px;
}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:14px;
}
.hero-stat{
  flex:1 1 180px;min-width:170px;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.18);
  border-radius:14px;padding:14px 18px;
}
.hero-stat b{display:block;font-size:24px;color:var(--accent);line-height:1.2;font-weight:700;}
.hero-stat span{font-size:14px;color:rgba(234,242,239,.82);}
.hero-anchor-bar{
  position:relative;z-index:2;margin-top:28px;display:flex;flex-wrap:wrap;gap:10px;
}
.hero-anchor-bar a{
  display:inline-block;padding:7px 16px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);
  color:#fff;font-size:14px;
}
.hero-anchor-bar a:hover{background:var(--accent);border-color:var(--accent);color:#fff;text-decoration:none;}

/* ---------- 通用标题 ---------- */
.section-head{max-width:820px;margin-bottom:44px;}
.section-kicker{
  display:inline-block;font-size:14px;font-weight:600;color:var(--brand-ink);
  background:var(--brand-wash);border-radius:var(--r-pill);padding:5px 14px;margin-bottom:14px;
}
.section-head h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:16.5px;max-width:760px;}
.section-head.on-dark h2{color:var(--dark-text);}
.section-head.on-dark p{color:rgba(234,242,239,.82);}
.section-head.on-dark .section-kicker{background:rgba(255,255,255,.14);color:#fff;}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding-left:38px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:10px;bottom:10px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand-ink) 0%,rgba(23,96,90,.18) 100%);
}
.tl-item{position:relative;padding-bottom:30px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;left:-38px;top:30px;width:21px;height:21px;border-radius:50%;
  background:#fff;border:3px solid var(--brand-ink);
  box-shadow:0 0 0 5px var(--brand-wash);
}
.tl-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 28px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.tl-card:hover{transform:translateY(-3px);border-color:rgba(23,96,90,.35);box-shadow:var(--sh-2);}
.tl-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:14px;}
.badge-tag{
  display:inline-block;padding:4px 13px;border-radius:var(--r-pill);
  background:var(--brand-wash);color:var(--brand-ink);font-size:14px;font-weight:600;
}
.badge-tag.is-accent{background:var(--accent-wash);color:#B4653F;}
.tl-meta time{font-size:14px;color:var(--text-3);}
.tl-inner{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:28px;align-items:center;}
.tl-item:nth-child(even) .tl-inner{grid-template-columns:240px minmax(0,1fr);}
.tl-item:nth-child(even) .tl-figure{order:-1;}
.tl-card h2{font-size:21px;line-height:1.45;margin-bottom:12px;}
.tl-card p{color:var(--text-2);font-size:16px;line-height:1.85;}
.tl-figure{
  margin:0;aspect-ratio:4/3;border-radius:12px;overflow:hidden;
  background:var(--brand-wash);border:1px solid var(--line);
}
.tl-figure img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.tl-card:hover .tl-figure img{transform:scale(1.03);}

/* ---------- 深色指标区 ---------- */
.deep-section{background:var(--dark);color:var(--dark-text);padding:80px 0;}
.metric-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.metric-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:16px;padding:24px 22px;transition:background .22s ease,transform .22s ease;
}
.metric-card:hover{background:rgba(255,255,255,.11);transform:translateY(-3px);}
.metric-card b{display:block;font-size:34px;line-height:1.15;color:var(--accent);font-weight:700;margin-bottom:8px;}
.metric-card h3{font-size:16.5px;color:#fff;margin-bottom:8px;font-weight:600;}
.metric-card p{font-size:14.5px;color:rgba(234,242,239,.76);margin:0;line-height:1.7;}
.deep-foot{
  margin-top:32px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
  padding-top:26px;border-top:1px solid rgba(255,255,255,.14);
}
.deep-foot p{margin:0;color:rgba(234,242,239,.82);font-size:15.5px;max-width:720px;}
.link-arrow{font-weight:600;color:#fff;display:inline-flex;align-items:center;gap:8px;}
.link-arrow i{transition:transform .22s ease;}
.link-arrow:hover{color:var(--accent);text-decoration:none;}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- 类型索引卡 ---------- */
.type-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;}
.type-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh-1);height:100%;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;
}
.type-card:hover{transform:translateY(-3px);border-color:rgba(23,96,90,.35);box-shadow:var(--sh-2);}
.type-icon{
  width:46px;height:46px;border-radius:14px;background:var(--brand-wash);
  color:var(--brand-ink);display:grid;place-items:center;font-size:19px;margin-bottom:18px;
}
.type-card h3{font-size:18px;margin-bottom:10px;}
.type-card p{font-size:15.5px;color:var(--text-2);margin-bottom:16px;}
.type-count{
  margin-top:auto;font-size:14px;color:var(--text-3);
  padding-top:14px;border-top:1px solid var(--line);
}
.type-count b{color:var(--accent);font-size:16px;}

/* ---------- 流程步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;}
.step{
  padding:0 24px;border-left:1px solid var(--line);
}
.step:first-child{border-left:0;padding-left:0;}
.step-num{
  display:block;font-size:15px;font-weight:700;color:var(--accent);letter-spacing:1px;margin-bottom:14px;
}
.step h3{font-size:18px;margin-bottom:10px;padding-top:14px;border-top:1px solid var(--line);}
.step p{font-size:15.5px;color:var(--text-2);}

/* ---------- CTA 深色条 ---------- */
.cta-band{background:var(--dark);color:var(--dark-text);padding:64px 0;}
.cta-inner{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:36px;align-items:center;}
.cta-inner h2{font-size:clamp(22px,2.4vw,28px);color:#fff;margin-bottom:12px;}
.cta-inner p{margin:0;color:rgba(234,242,239,.82);font-size:16px;}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;}
.cta-form input{
  flex:1 1 240px;height:50px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.08);
  color:#fff;padding:0 16px;outline:none;transition:border-color .2s ease,box-shadow .2s ease;
}
.cta-form input::placeholder{color:rgba(234,242,239,.6);}
.cta-form input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(217,134,95,.25);}
.btn-primary-solid{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border:0;border-radius:var(--r-btn);
  background:var(--brand-ink);color:#fff;font-weight:600;font-size:16px;cursor:pointer;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary-solid:hover{background:var(--brand-ink-soft);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary-solid:active{transform:translateY(0);}
.cta-note{margin-top:14px;font-size:14px;color:rgba(234,242,239,.66);}

/* ---------- FAQ ---------- */
.faq-accordion .accordion-item{
  border:1px solid var(--line);border-radius:14px;background:var(--surface);
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);
}
.faq-accordion .accordion-button{
  background:var(--surface);color:var(--text);font-size:17px;font-weight:600;
  padding:20px 22px;box-shadow:none;border-radius:0!important;line-height:1.5;
}
.faq-accordion .accordion-button:not(.collapsed){
  background:var(--brand-wash);color:var(--brand-ink);
  box-shadow:inset 3px 0 0 var(--brand-ink);
}
.faq-accordion .accordion-button:focus{box-shadow:0 0 0 3px rgba(23,96,90,.18);z-index:3;}
.faq-accordion .accordion-button::after{
  background-image:none;content:"+";font-size:22px;font-weight:400;color:var(--brand-ink);
  width:auto;height:auto;line-height:1;transform:none;transition:transform .25s ease;
  display:grid;place-items:center;
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.faq-accordion .accordion-body{
  padding:6px 22px 22px;color:var(--text-2);font-size:16px;line-height:1.85;
  background:var(--surface);
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--dark-text);padding:70px 0 26px;font-size:15px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px;}
.footer-brand .brand{color:#fff;margin-bottom:16px;}
.footer-brand .brand-mark{background:#fff;color:var(--dark);}
.footer-brand p{color:rgba(234,242,239,.76);font-size:15px;line-height:1.8;max-width:340px;}
.footer-search{display:flex;gap:8px;margin-top:18px;max-width:340px;}
.footer-search input{
  flex:1;min-width:0;height:44px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.08);
  color:#fff;padding:0 14px;outline:none;font-size:15px;
}
.footer-search input::placeholder{color:rgba(234,242,239,.55);}
.footer-search input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(217,134,95,.22);}
.footer-search button{
  height:44px;padding:0 18px;border:0;border-radius:var(--r-btn);
  background:var(--brand-ink-soft);color:#fff;font-weight:600;cursor:pointer;transition:background .2s ease;
}
.footer-search button:hover{background:var(--accent);}
.footer-col h4{font-size:16px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{color:#C9D8D4;font-size:15px;display:inline-block;transition:color .2s ease,transform .2s ease;}
.footer-col ul li a:hover{color:#fff;transform:translateX(2px);text-decoration:none;}
.footer-col ul li span{color:rgba(234,242,239,.72);font-size:15px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  color:rgba(234,242,239,.66);font-size:14px;
}
.footer-bottom .policy{display:flex;flex-wrap:wrap;gap:18px;}
.footer-bottom .policy a{color:rgba(234,242,239,.72);font-size:14px;}
.footer-bottom .policy a:hover{color:#fff;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .metric-row,.type-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:32px;}
  .step:nth-child(3){border-left:0;padding-left:0;}
}
@media (max-width:991px){
  .section{padding:64px 0;}
  .header-top{flex-wrap:wrap;gap:12px;padding:12px 0;}
  .brand{order:1;}
  .nav-toggle{display:flex;order:2;}
  .nav-search{order:3;flex:1 1 100%;max-width:100%;height:46px;}
  .nav-links{
    display:none;order:4;width:100%;flex-direction:column;align-items:stretch;
    gap:8px;padding:6px 0 16px;
  }
  .nav-links.open{display:flex;}
  .nav-links a{
    padding:13px 16px;border-radius:12px;background:#fff;border:1px solid var(--line);
  }
  .nav-links a.btn-nav-cta{text-align:center;}
  .tl-inner,.tl-item:nth-child(even) .tl-inner{grid-template-columns:minmax(0,1fr);}
  .tl-item:nth-child(even) .tl-figure{order:0;}
  .cta-inner{grid-template-columns:minmax(0,1fr);gap:26px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
}
@media (max-width:575px){
  body{font-size:16px;line-height:1.8;}
  .section{padding:48px 0;}
  .deep-section,.cta-band{padding:48px 0;}
  .page-hero{padding:40px 0 36px;}
  .hero-stat{flex:1 1 100%;}
  .metric-row,.type-grid,.steps{grid-template-columns:minmax(0,1fr);}
  .step{border-left:0;padding:0;border-top:1px solid var(--line);padding-top:22px;}
  .step h3{border-top:0;padding-top:0;}
  .timeline{padding-left:26px;}
  .timeline::before{left:6px;}
  .tl-dot{left:-27px;width:17px;height:17px;box-shadow:0 0 0 4px var(--brand-wash);}
  .tl-card{padding:22px 18px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category4 */
:root{
  --brand-ink:#17605A;
  --brand-ink-soft:#2C7F74;
  --brand-wash:#E6F0ED;
  --accent:#D9865F;
  --accent-wash:#FBEDE4;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E4DFD4;
  --text:#14191C;
  --text-2:#5A6360;
  --text-3:#8A928E;
  --dark:#10312D;
  --dark-text:#EAF2EF;
  --radius-card:16px;
  --radius-btn:12px;
  --shadow-1:0 2px 10px rgba(20,25,28,.05);
  --shadow-2:0 10px 26px rgba(20,25,28,.10);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-serif:"Source Han Serif SC","Songti SC",serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-ink);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-ink-soft);text-decoration:underline;text-underline-offset:3px}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:.2px}
h1{font-size:40px;line-height:1.25}
h2{font-size:28px;line-height:1.3}
h3{font-size:20px;line-height:1.45;font-weight:600}
p{margin:0 0 1.4em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button,input{font-family:inherit}
:focus-visible{outline:3px solid rgba(23,96,90,.25);outline-offset:2px;border-radius:6px}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.narrow{max-width:900px}
.readable{max-width:780px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,245,240,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,padding .25s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 18px rgba(20,25,28,.06)}
.header-inner{display:flex;align-items:center;gap:22px;height:78px}
.site-header.is-scrolled .header-inner{height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--brand-ink);color:#fff;
  display:grid;place-items:center;font-size:18px;font-weight:700;
}
.brand-name{font-size:19px;font-weight:700;color:var(--text);white-space:nowrap}
.nav-search{
  flex:1 1 auto;max-width:540px;
  display:flex;align-items:center;gap:10px;
  height:48px;padding-left:18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:999px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{
  border-color:var(--brand-ink);
  box-shadow:0 0 0 3px rgba(23,96,90,.14);
}
.nav-search i{color:var(--text-3);font-size:15px}
.nav-search input{
  flex:1 1 auto;border:0;background:transparent;outline:none;
  font-size:15px;color:var(--text);min-width:0;
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search button{
  flex:0 0 auto;height:38px;margin-right:5px;padding:0 20px;
  border:0;border-radius:10px;
  background:var(--brand-ink);color:#fff;font-size:15px;font-weight:600;
  cursor:pointer;transition:background .2s ease;
}
.nav-search button:hover{background:var(--brand-ink-soft)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  padding:8px 13px;border-radius:999px;
  font-size:15px;color:var(--text-2);white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.nav-links a:hover{background:var(--brand-wash);color:var(--brand-ink);text-decoration:none}
.nav-links a.active{background:var(--brand-wash);color:var(--brand-ink);font-weight:600}
.nav-links a.btn-nav-cta{
  margin-left:8px;height:42px;display:inline-flex;align-items:center;
  padding:0 20px;border-radius:var(--radius-btn);
  background:var(--brand-ink);color:#fff;font-weight:600;
}
.nav-links a.btn-nav-cta:hover{background:var(--brand-ink-soft);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;
  border:1px solid var(--line);border-radius:12px;background:var(--surface);
  color:var(--brand-ink);font-size:18px;cursor:pointer;
}
.mobile-search{display:none;padding:0 20px 14px}
.mobile-search form{
  display:flex;align-items:center;gap:8px;height:46px;padding-left:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:999px;
}
.mobile-search input{flex:1;border:0;background:transparent;outline:none;font-size:15px;min-width:0}
.mobile-search button{
  height:36px;margin-right:5px;padding:0 16px;border:0;border-radius:9px;
  background:var(--brand-ink);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
}

.drawer-menu{list-style:none;padding:0;margin:0}
.drawer-menu li{border-bottom:1px solid var(--line)}
.drawer-menu a{display:block;padding:15px 4px;font-size:16px;color:var(--text)}
.drawer-menu a.active{color:var(--brand-ink);font-weight:600}
.offcanvas{background:var(--bg)}
.offcanvas-header{border-bottom:1px solid var(--line)}
.offcanvas-title{font-size:17px;font-weight:700}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  color:#fff;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(16,49,45,.88) 0%,rgba(23,96,90,.68) 62%,rgba(16,49,45,.78) 100%);
}
.page-hero .wrap{position:relative;z-index:2;padding-top:56px;padding-bottom:52px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.78);margin-bottom:20px}
.crumb a{color:rgba(255,255,255,.86)}
.crumb a:hover{color:#fff}
.crumb span.sep{opacity:.55}
.crumb .current{color:#fff;font-weight:600}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);
  font-size:14px;color:#fff;margin-bottom:18px;
}
.page-hero h1{font-size:38px;color:#fff;max-width:900px}
.page-hero .hero-lead{
  margin-top:16px;max-width:760px;
  font-size:16px;line-height:1.85;color:rgba(255,255,255,.86);
}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px;margin-top:34px}
.hero-stats div{min-width:120px}
.hero-stats strong{display:block;font-size:26px;color:var(--accent);line-height:1.2;font-weight:700}
.hero-stats span{font-size:14px;color:rgba(255,255,255,.78)}

/* ---------- anchor bar ---------- */
.anchor-bar{background:var(--surface);border-bottom:1px solid var(--line);padding:12px 0}
.anchor-bar ul{display:flex;flex-wrap:wrap;gap:10px}
.anchor-bar a{
  display:inline-block;padding:8px 18px;border-radius:999px;
  background:var(--brand-wash);color:var(--brand-ink);
  font-size:14px;font-weight:600;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.anchor-bar a:hover{background:var(--brand-ink);color:#fff;text-decoration:none;transform:translateY(-1px)}
.anchor-bar a.is-current{background:var(--brand-ink);color:#fff}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section.tight{padding:72px 0}
.section.alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:900px;margin-bottom:34px}
.section-head .kicker{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:1px;
  color:var(--accent);text-transform:uppercase;margin-bottom:10px;
}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:16px;margin:0;max-width:760px}

/* ---------- faq ---------- */
.faq-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:8px 28px;
  box-shadow:var(--shadow-1);
}
.accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--line);
}
.accordion-item:last-child{border-bottom:0}
.accordion-button{
  position:relative;
  background:transparent;box-shadow:none;
  font-size:17px;font-weight:600;color:var(--text);
  padding:22px 46px 22px 18px;
  border-radius:0;
  transition:color .2s ease,background .2s ease;
}
.accordion-button:not(.collapsed){
  color:var(--brand-ink);background:var(--brand-wash);
}
.accordion-button:hover{color:var(--brand-ink)}
.accordion-button::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  background:var(--brand-ink);border-radius:2px;
  transform:scaleY(0);transform-origin:top;
  transition:transform .25s ease;
}
.accordion-button:not(.collapsed)::before{transform:scaleY(1)}
.accordion-button:focus{box-shadow:0 0 0 3px rgba(23,96,90,.16);z-index:2}
.accordion-button::after{
  content:"+";background-image:none;
  width:30px;height:30px;display:grid;place-items:center;
  font-size:22px;font-weight:400;color:var(--brand-ink);
  transition:transform .25s ease;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.accordion-body{
  padding:4px 46px 24px 18px;
  font-size:16px;line-height:1.85;color:var(--text-2);
}
.accordion-body strong{color:var(--text);font-weight:600}

.faq-side{display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px;
  box-shadow:var(--shadow-1);
}
.side-card h3{font-size:17px;margin-bottom:12px}
.side-card p{font-size:15px;color:var(--text-2);line-height:1.8}
.side-list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:10px 0;border-bottom:1px dashed var(--line);
  font-size:15px;color:var(--text-2);
}
.side-list li:last-child{border-bottom:0}
.side-list i{color:var(--brand-ink);margin-top:5px;font-size:13px}

/* ---------- compare table ---------- */
.table-scroll{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--surface);
  box-shadow:var(--shadow-1);
}
.cmp-table{width:100%;min-width:820px;border-collapse:collapse;font-size:15px}
.cmp-table caption{
  caption-side:top;text-align:left;
  padding:20px 22px 6px;font-size:14px;color:var(--text-3);
}
.cmp-table th,.cmp-table td{
  padding:16px 20px;text-align:left;vertical-align:top;
  border-bottom:1px solid var(--line);
  line-height:1.75;
}
.cmp-table thead th{
  background:var(--brand-wash);color:var(--brand-ink);
  font-size:15px;font-weight:700;white-space:nowrap;
}
.cmp-table tbody th{
  width:150px;font-weight:600;color:var(--text);background:#FBF9F5;
}
.cmp-table tbody tr:last-child th,
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table td{color:var(--text-2)}

/* ---------- topic cards ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.topic-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.topic-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(23,96,90,.35);text-decoration:none}
.topic-card .thumb{position:relative;aspect-ratio:4/3;background:var(--brand-wash);overflow:hidden}
.topic-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.topic-card:hover .thumb img{transform:scale(1.03)}
.topic-card .body{padding:22px 24px 24px}
.topic-card .pill{
  display:inline-block;padding:4px 12px;border-radius:999px;
  background:var(--accent-wash);color:#A45B36;font-size:13px;font-weight:600;margin-bottom:12px;
}
.topic-card h3{font-size:19px;color:var(--text);margin-bottom:10px}
.topic-card p{font-size:15px;color:var(--text-2);line-height:1.8;margin:0}
.topic-card .go{
  display:inline-flex;align-items:center;gap:8px;margin-top:16px;
  font-size:15px;font-weight:600;color:var(--brand-ink);
}
.topic-card .go i{transition:transform .2s ease}
.topic-card:hover .go i{transform:translateX(3px)}

/* ---------- cta ---------- */
.cta-band{
  background:var(--dark);color:var(--dark-text);
  padding:64px 0;
}
.cta-grid{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-grid h2{color:#fff;font-size:26px;margin-bottom:10px}
.cta-grid p{color:rgba(234,242,239,.78);font-size:16px;margin:0;max-width:560px}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.cta-form input{
  height:50px;min-width:280px;padding:0 18px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(234,242,239,.3);
  border-radius:var(--radius-btn);
  color:#fff;font-size:15px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.cta-form input::placeholder{color:rgba(234,242,239,.6)}
.cta-form input:focus{
  border-color:#8FC6BB;background:rgba(255,255,255,.13);
  box-shadow:0 0 0 3px rgba(143,198,187,.22);
}
.btn-solid{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 28px;
  border:0;border-radius:var(--radius-btn);
  background:var(--accent);color:#fff;font-size:16px;font-weight:600;
  cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.btn-solid:hover{background:#C9764F;transform:translateY(-1px);box-shadow:0 10px 22px rgba(0,0,0,.22);color:#fff;text-decoration:none}
.btn-solid:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;
  border:1px solid var(--brand-ink);border-radius:var(--radius-btn);
  background:transparent;color:var(--brand-ink);
  font-size:16px;font-weight:600;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.btn-ghost:hover{background:var(--brand-wash);color:var(--brand-ink);transform:translateY(-1px);text-decoration:none}
.cta-band .btn-solid{background:#fff;color:var(--dark)}
.cta-band .btn-solid:hover{background:#E6F0ED;color:var(--dark)}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:#C9D8D4;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-mark{background:#fff;color:var(--dark)}
.footer-brand .brand-name{color:#fff}
.footer-brand p{font-size:15px;line-height:1.85;color:rgba(201,216,212,.86);margin-bottom:18px}
.footer-search{display:flex;gap:8px;max-width:340px}
.footer-search input{
  flex:1;height:44px;padding:0 16px;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(201,216,212,.28);
  border-radius:var(--radius-btn);
  color:#fff;font-size:14px;outline:none;min-width:0;
}
.footer-search input::placeholder{color:rgba(201,216,212,.6)}
.footer-search input:focus{border-color:#8FC6BB;box-shadow:0 0 0 3px rgba(143,198,187,.2)}
.footer-search button{
  height:44px;padding:0 18px;border:0;border-radius:var(--radius-btn);
  background:var(--brand-ink-soft);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
}
.footer-search button:hover{background:#369387}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer-col ul li{margin-bottom:11px;font-size:15px}
.footer-col ul li a,.footer-col ul li span{color:#C9D8D4;font-size:15px}
.footer-col ul li a:hover{color:#fff;text-decoration:none;padding-left:2px}
.footer-bottom{
  border-top:1px solid rgba(201,216,212,.18);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:14px;color:rgba(201,216,212,.72);
}
.footer-bottom .policy{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom .policy a{color:rgba(201,216,212,.82);font-size:14px}
.footer-bottom .policy a:hover{color:#fff}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .nav-search{max-width:420px}
  .nav-links a{padding:8px 10px;font-size:14px}
}
@media (max-width:991px){
  .nav-search{display:none}
  .nav-links{display:none}
  .nav-toggle{display:grid;place-items:center}
  .mobile-search{display:block}
  .site-header.is-scrolled .header-inner{height:64px}
  .header-inner{height:64px}
  .section{padding:64px 0}
  .page-hero h1{font-size:32px}
  .topic-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .faq-panel{padding:4px 18px}
  .accordion-button{padding:18px 40px 18px 14px;font-size:16px}
  .accordion-body{padding:2px 30px 20px 14px}
  .anchor-bar ul{gap:8px}
  .anchor-bar a{padding:7px 14px;font-size:13px}
}
@media (max-width:767px){
  body{font-size:16px}
  h1{font-size:28px}
  .page-hero h1{font-size:27px;line-height:1.3}
  .page-hero .wrap{padding-top:40px;padding-bottom:38px}
  .page-hero .hero-lead{font-size:15px}
  .hero-stats{gap:22px 30px;margin-top:26px}
  .hero-stats strong{font-size:22px}
  .section,.section.tight{padding:48px 0}
  .section-head{margin-bottom:26px}
  .section-head h2{font-size:24px}
  .topic-grid{grid-template-columns:1fr}
  .cta-grid{flex-direction:column;align-items:flex-start}
  .cta-form{width:100%}
  .cta-form input{min-width:0;width:100%}
  .cta-form .btn-solid{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-search{max-width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .wrap{padding:0 16px}
  .brand-name{font-size:17px}
  .brand-mark{width:34px;height:34px;border-radius:10px;font-size:16px}
  .mobile-search{padding:0 16px 12px}
  .cmp-table th,.cmp-table td{padding:13px 16px}
}

/* roulang page: category2 */
:root{
  --brand-ink:#17605A;
  --brand-ink-soft:#2C7F74;
  --brand-wash:#E6F0ED;
  --accent:#D9865F;
  --accent-wash:#FBEDE4;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E4DFD4;
  --text:#14191C;
  --text-2:#5A6360;
  --text-3:#8A928E;
  --ink-deep:#10312D;
  --footer-text:#C9D8D4;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-1:0 2px 10px rgba(20,25,28,.05);
  --shadow-2:0 10px 26px rgba(20,25,28,.10);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Source Han Serif SC","Songti SC",serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-ink);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-ink-soft);text-decoration:underline;text-underline-offset:3px;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button,input,textarea{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:3px solid rgba(23,96,90,.25);outline-offset:2px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.section{padding:96px 0;}
.section.tight{padding:72px 0;}
.section.on-wash{background:var(--brand-wash);}
.section.on-white{background:var(--surface);}
.section-eyebrow{
  display:inline-block;
  font-size:14px;
  letter-spacing:.08em;
  color:var(--brand-ink);
  background:var(--brand-wash);
  border-radius:var(--radius-pill);
  padding:5px 14px;
  margin-bottom:16px;
}
.section-head{max-width:820px;margin-bottom:36px;}
.section-head h2{font-size:28px;line-height:1.35;font-weight:700;margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:16.5px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(8px);
  transition:box-shadow .22s ease,padding .22s ease;
}
.site-header.is-stuck{box-shadow:0 6px 20px rgba(20,25,28,.07);}
.header-inner{display:flex;align-items:center;gap:20px;padding:14px 0;transition:padding .22s ease;}
.site-header.is-stuck .header-inner{padding:9px 0;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-ink);color:#fff;
  font-weight:700;font-size:18px;
  box-shadow:var(--shadow-1);
}
.brand-name{font-size:18px;font-weight:700;color:var(--text);letter-spacing:.2px;}
.search-form{
  position:relative;
  display:flex;align-items:center;
  flex:1 1 auto;max-width:520px;
  height:48px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  padding:0 5px 0 16px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-form:focus-within{
  border-color:var(--brand-ink);
  box-shadow:0 0 0 3px rgba(23,96,90,.12),var(--shadow-1);
}
.search-form i{color:var(--text-3);font-size:15px;}
.search-form input{
  flex:1 1 auto;border:0;background:transparent;
  height:100%;padding:0 10px;font-size:15px;outline:none;
}
.search-form input::placeholder{color:var(--text-3);}
.search-form button{
  flex:0 0 auto;
  height:38px;padding:0 20px;
  border:0;border-radius:var(--radius-pill);
  background:var(--brand-ink);color:#fff;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background .2s ease,transform .2s ease;
}
.search-form button:hover{background:var(--brand-ink-soft);}
.search-form button:active{transform:scale(.98);}
.nav-links{display:flex;align-items:center;gap:4px;flex:0 0 auto;}
.nav-links a{
  display:inline-block;
  padding:9px 12px;
  font-size:15px;
  color:var(--text-2);
  border-radius:var(--radius-btn);
  white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.nav-links a:hover{background:var(--brand-wash);color:var(--brand-ink);text-decoration:none;}
.nav-links a.active{color:var(--brand-ink);font-weight:600;background:var(--brand-wash);}
.nav-links a.btn-nav-cta{
  background:var(--brand-ink);color:#fff;font-weight:600;
  padding:9px 18px;border-radius:var(--radius-pill);
}
.nav-links a.btn-nav-cta:hover{background:var(--brand-ink-soft);transform:translateY(-1px);}
.nav-toggle{
  display:none;
  align-items:center;gap:8px;
  height:44px;padding:0 16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  color:var(--text);font-size:15px;cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(23,96,90,.35);color:var(--brand-ink);}

/* ============ 页头 Hero ============ */
.page-hero{
  position:relative;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  color:#fff;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(16,49,45,.88) 0%,rgba(16,49,45,.72) 46%,rgba(23,96,90,.58) 100%);
}
.page-hero .wrap{position:relative;z-index:2;}
.hero-body{padding:74px 0 84px;max-width:760px;}
.breadcrumb-line{font-size:14px;color:rgba(255,255,255,.78);margin-bottom:18px;}
.breadcrumb-line a{color:rgba(255,255,255,.86);}
.breadcrumb-line a:hover{color:#fff;}
.breadcrumb-line span.sep{margin:0 8px;color:rgba(255,255,255,.45);}
.breadcrumb-line span.current{color:var(--accent-wash);}
.page-hero h1{
  font-size:40px;line-height:1.28;font-weight:700;letter-spacing:.5px;
  margin-bottom:18px;
}
.page-hero .hero-desc{
  font-size:17px;line-height:1.8;color:rgba(255,255,255,.86);
  max-width:620px;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 28px;
  border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--brand-ink);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-ink-soft);color:#fff;box-shadow:var(--shadow-2);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.6);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}
.btn-outline{background:transparent;border-color:var(--brand-ink);color:var(--brand-ink);}
.btn-outline:hover{background:var(--brand-wash);color:var(--brand-ink);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;border-radius:var(--radius-pill);}
.hero-meta{display:flex;flex-wrap:wrap;gap:26px;font-size:14px;color:rgba(255,255,255,.8);}
.hero-meta strong{color:#fff;font-weight:600;}
.filter-bar{
  position:relative;z-index:3;
  margin-top:-26px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);
  padding:16px 20px;
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
}
.filter-bar .filter-label{font-size:14px;color:var(--text-3);margin-right:6px;}
.pill{
  display:inline-flex;align-items:center;
  height:36px;padding:0 16px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:var(--surface);
  font-size:14px;color:var(--text-2);
  transition:all .2s ease;
}
.pill:hover{border-color:rgba(23,96,90,.4);color:var(--brand-ink);background:var(--brand-wash);text-decoration:none;}
.pill.is-active{background:var(--brand-ink);border-color:var(--brand-ink);color:#fff;font-weight:600;}
.pill.is-active:hover{background:var(--brand-ink-soft);color:#fff;}

/* ============ 指标条 ============ */
.metrics{padding:64px 0 8px;}
.metric-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.metric-item{padding:28px 26px;border-right:1px solid var(--line);}
.metric-item:last-child{border-right:0;}
.metric-item .num{font-size:34px;font-weight:700;color:var(--accent);line-height:1.1;letter-spacing:-.5px;}
.metric-item .num small{font-size:16px;font-weight:600;margin-left:4px;color:var(--accent);}
.metric-item .label{margin-top:8px;font-size:14.5px;color:var(--text-2);line-height:1.6;}

/* ============ 服务条目卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(23,96,90,.35);}
.scene-card .thumb{
  position:relative;aspect-ratio:4/3;overflow:hidden;
  background:var(--brand-wash);
}
.scene-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease;}
.scene-card:hover .thumb img{transform:scale(1.03);}
.scene-card .card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.tag{
  align-self:flex-start;
  display:inline-block;
  padding:4px 12px;
  border-radius:var(--radius-pill);
  background:var(--brand-wash);
  color:var(--brand-ink);
  font-size:13.5px;font-weight:600;
}
.tag.warm{background:var(--accent-wash);color:#B05F38;}
.scene-card h3{font-size:19px;line-height:1.5;font-weight:600;}
.scene-card h3 a{color:var(--text);}
.scene-card:hover h3 a{color:var(--brand-ink);}
.scene-card p{font-size:15.5px;color:var(--text-2);line-height:1.75;}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:14px;color:var(--text-3);
}
.card-foot .go{color:var(--brand-ink);font-weight:600;}
.card-foot .go i{transition:transform .2s ease;margin-left:4px;}
.scene-card:hover .card-foot .go i{transform:translateX(3px);}

/* ============ 图文交替 ============ */
.split-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:44px 0;
}
.split-row + .split-row{border-top:1px solid var(--line);}
.split-row.reverse .split-media{order:2;}
.split-media{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  aspect-ratio:4/3;
  border:1px solid var(--line);
  background:var(--brand-wash);
  box-shadow:var(--shadow-1);
}
.split-media img{width:100%;height:100%;object-fit:cover;}
.split-media .deco{
  position:absolute;left:-18px;bottom:-18px;width:120px;height:120px;
  background:var(--accent-wash);border-radius:18px;z-index:-1;
}
.split-text h2{font-size:27px;line-height:1.35;font-weight:700;margin-bottom:18px;}
.split-text p{color:var(--text-2);margin-bottom:16px;}
.split-text .quote{
  border-left:3px solid var(--brand-ink);
  background:var(--brand-wash);
  border-radius:0 var(--radius-btn) var(--radius-btn) 0;
  padding:16px 20px;
  font-family:var(--font-serif);
  color:var(--text);
  font-size:16.5px;
  margin:18px 0;
}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:10px 0;font-size:16px;color:var(--text-2);
}
.check-list li i{color:var(--brand-ink);margin-top:6px;font-size:14px;}

/* ============ 流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px 24px;
  box-shadow:var(--shadow-1);
  border-top:3px solid var(--brand-ink);
  transition:transform .22s ease,box-shadow .22s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.step .idx{font-size:14px;font-weight:700;color:var(--accent);letter-spacing:.1em;}
.step h3{font-size:18px;font-weight:600;margin:12px 0 10px;}
.step p{font-size:15.5px;color:var(--text-2);line-height:1.75;}

/* ============ 深色区块 ============ */
.dark-band{background:var(--ink-deep);color:#EAF2EF;padding:88px 0;}
.dark-band .section-head h2{color:#fff;}
.dark-band .section-head p{color:rgba(234,242,239,.75);}
.dark-band .section-eyebrow{background:rgba(255,255,255,.12);color:#D9E9E4;}
.dark-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.dark-card{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(234,242,239,.16);
  border-radius:var(--radius-card);
  padding:28px 24px;
  transition:background .22s ease,border-color .22s ease,transform .22s ease;
}
.dark-card:hover{background:rgba(255,255,255,.1);border-color:rgba(234,242,239,.32);transform:translateY(-3px);}
.dark-card .figure{font-size:32px;font-weight:700;color:var(--accent);line-height:1.1;}
.dark-card h3{font-size:18px;font-weight:600;color:#fff;margin:12px 0 10px;}
.dark-card p{font-size:15.5px;color:rgba(234,242,239,.75);line-height:1.8;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--line);
}
.accordion-item:first-of-type{border-top:1px solid var(--line);}
.accordion-button{
  background:transparent;
  color:var(--text);
  font-size:17px;font-weight:600;
  padding:22px 44px 22px 18px;
  border-radius:0;
  box-shadow:none;
  border-left:3px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.accordion-button:not(.collapsed){
  background:var(--brand-wash);
  color:var(--brand-ink);
  border-left-color:var(--brand-ink);
  box-shadow:none;
}
.accordion-button:focus{box-shadow:none;outline:3px solid rgba(23,96,90,.2);outline-offset:-3px;}
.accordion-button::after{
  background-image:none;
  content:"\2b";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:15px;
  color:var(--brand-ink);
  transform:none;
  transition:transform .22s ease;
  position:absolute;right:18px;top:50%;margin-top:-11px;
  width:auto;height:auto;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.accordion-body{
  padding:4px 44px 26px 18px;
  color:var(--text-2);
  font-size:16px;
  line-height:1.85;
}

/* ============ CTA 条 ============ */
.cta-band{background:var(--ink-deep);color:#EAF2EF;padding:70px 0;}
.cta-inner{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.cta-inner h2{color:#fff;font-size:28px;font-weight:700;margin-bottom:14px;line-height:1.35;}
.cta-inner p{color:rgba(234,242,239,.78);font-size:16px;}
.cta-form{background:rgba(255,255,255,.06);border:1px solid rgba(234,242,239,.18);border-radius:var(--radius-card);padding:26px;}
.cta-form .field{margin-bottom:16px;}
.cta-form label{display:block;font-size:14px;color:rgba(234,242,239,.8);margin-bottom:8px;}
.cta-form input,.cta-form textarea{
  width:100%;
  background:rgba(255,255,255,.95);
  border:1px solid rgba(234,242,239,.4);
  border-radius:var(--radius-btn);
  padding:12px 14px;
  font-size:15.5px;
  color:var(--text);
  outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.cta-form textarea{min-height:96px;resize:vertical;}
.cta-form input:focus,.cta-form textarea:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(217,134,95,.24);
}
.cta-form .hint{font-size:13.5px;color:rgba(234,242,239,.6);margin-top:12px;}

/* ============ 分类胶囊导航 ============ */
.cat-pager{padding:72px 0 24px;}
.pager-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}
.pager-item{
  display:inline-flex;align-items:center;
  height:44px;padding:0 22px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:var(--surface);
  font-size:15px;color:var(--text-2);
  transition:all .2s ease;
}
.pager-item:hover{border-color:rgba(23,96,90,.4);color:var(--brand-ink);background:var(--brand-wash);text-decoration:none;}
.pager-item.is-current{background:var(--brand-ink);border-color:var(--brand-ink);color:#fff;font-weight:600;}
.pager-item.is-current:hover{background:var(--brand-ink-soft);color:#fff;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-deep);color:var(--footer-text);padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);color:#fff;}
.footer-brand .brand-name{color:#fff;font-size:18px;font-weight:700;}
.footer-brand p{font-size:15px;line-height:1.85;color:var(--footer-text);margin-bottom:20px;}
.footer-search{display:flex;gap:8px;}
.footer-search input{
  flex:1 1 auto;
  height:44px;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(201,216,212,.28);
  border-radius:var(--radius-btn);
  padding:0 14px;
  color:#fff;
  font-size:15px;
  outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-search input::placeholder{color:rgba(201,216,212,.65);}
.footer-search input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(217,134,95,.22);}
.footer-search button{
  height:44px;padding:0 20px;
  border:0;border-radius:var(--radius-btn);
  background:var(--brand-ink);color:#fff;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background .2s ease;
}
.footer-search button:hover{background:var(--brand-ink-soft);}
.footer-col h4{font-size:16px;color:#fff;font-weight:600;margin-bottom:18px;}
.footer-col ul li{margin-bottom:11px;font-size:15px;}
.footer-col ul li a{color:var(--footer-text);display:inline-block;transition:color .2s ease,transform .2s ease;}
.footer-col ul li a:hover{color:#fff;text-decoration:none;transform:translateX(2px);}
.footer-col ul li span{color:var(--footer-text);}
.footer-bottom{
  border-top:1px solid rgba(201,216,212,.18);
  padding:22px 0 30px;
  display:flex;flex-wrap:wrap;gap:14px;
  align-items:center;justify-content:space-between;
  font-size:14px;color:rgba(201,216,212,.75);
}
.footer-bottom .policy{display:flex;flex-wrap:wrap;gap:20px;}
.footer-bottom .policy a{color:rgba(201,216,212,.85);}
.footer-bottom .policy a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .card-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:991px){
  body{font-size:16px;}
  .section{padding:64px 0;}
  .section.tight{padding:52px 0;}
  .header-inner{flex-wrap:wrap;padding:12px 0;gap:12px;}
  .nav-toggle{display:inline-flex;margin-left:auto;order:2;}
  .brand{order:1;}
  .search-form{order:3;width:100%;max-width:none;flex:1 0 100%;}
  .nav-links{
    order:4;
    display:none;
    width:100%;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    padding:10px 0 4px;
    border-top:1px solid var(--line);
    margin-top:6px;
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:12px 14px;font-size:16px;border-radius:var(--radius-btn);}
  .nav-links a.btn-nav-cta{text-align:center;margin-top:8px;}
  .page-hero h1{font-size:31px;}
  .hero-body{padding:56px 0 66px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .metric-row{grid-template-columns:repeat(2,1fr);}
  .metric-item:nth-child(2){border-right:0;}
  .metric-item:nth-child(1),.metric-item:nth-child(2){border-bottom:1px solid var(--line);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .split-row{grid-template-columns:1fr;gap:32px;padding:36px 0;}
  .split-row.reverse .split-media{order:0;}
  .dark-grid{grid-template-columns:1fr;}
  .cta-inner{grid-template-columns:1fr;gap:30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575px){
  .wrap{padding:0 16px;}
  .section{padding:48px 0;}
  .page-hero h1{font-size:26px;line-height:1.32;}
  .hero-body{padding:44px 0 56px;}
  .hero-actions{gap:10px;}
  .btn{height:48px;padding:0 20px;font-size:15px;width:100%;}
  .hero-actions .btn{width:100%;}
  .hero-meta{gap:14px;font-size:13.5px;}
  .card-grid{grid-template-columns:1fr;}
  .metric-row{grid-template-columns:1fr;}
  .metric-item{border-right:0;border-bottom:1px solid var(--line);}
  .metric-item:last-child{border-bottom:0;}
  .steps{grid-template-columns:1fr;}
  .section-head h2{font-size:23px;}
  .split-text h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-search{flex-wrap:wrap;}
  .footer-search input{flex:1 0 100%;}
  .footer-search button{width:100%;}
  .accordion-button{font-size:16px;padding:18px 40px 18px 14px;}
  .accordion-body{padding:2px 20px 22px 14px;}
  .pager-row{gap:10px;}
  .pager-item{width:100%;justify-content:center;}
}