/* roulang page: index */
:root{
  --brand:#0B4C48;
  --brand-deep:#08332F;
  --brand-light:#12706A;
  --brand-pale:#E3F0EE;
  --accent:#E4762F;
  --accent-deep:#C8601F;
  --accent-pale:#FDEEE3;
  --ink:#10201F;
  --text:#33413F;
  --muted:#6B7C7A;
  --line:#E4EAE8;
  --page:#F5F8F7;
  --card:#FFFFFF;
  --ok:#2F9E6B;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-sm:0 1px 2px rgba(16,32,31,.06);
  --sh-md:0 6px 18px rgba(16,32,31,.08);
  --sh-lg:0 18px 40px rgba(16,32,31,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:116px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  background:var(--page);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--ink);line-height:1.3;margin:0;text-wrap:balance}
h1{font-size:clamp(28px,4.2vw,44px);font-weight:800;letter-spacing:.01em}
h2{font-size:clamp(22px,2.6vw,30px);font-weight:700}
h3{font-size:19px;font-weight:600}
h4{font-size:16px;font-weight:600}
p{margin:0}
a{color:var(--brand);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--brand-light)}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea{font:inherit;color:var(--text)}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
section[id],div[id]{scroll-margin-top:116px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media(min-width:1440px){.container{max-width:1280px}}
@media(max-width:767px){.container{padding:0 16px}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff}
.nav-top{border-bottom:1px solid var(--line);background:#fff}
.nav-top-inner{display:flex;align-items:center;gap:24px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--brand);text-decoration:none}
.logo:hover{color:var(--brand);text-decoration:none}
.logo-mark{width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;color:var(--brand);flex:0 0 auto}
.logo-mark svg{width:28px;height:28px}
.logo-text{font-size:18px;font-weight:800;letter-spacing:.01em;white-space:nowrap}
.nav-search{position:relative;display:flex;align-items:center;width:240px;transition:width .28s var(--ease);flex:0 0 auto}
.nav-search svg{position:absolute;left:14px;width:16px;height:16px;color:var(--muted);pointer-events:none}
.nav-search input{
  width:100%;height:40px;border-radius:999px;border:1px solid transparent;
  background:var(--page);padding:0 16px 0 38px;font-size:14px;outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s;
}
.nav-search input::placeholder{color:var(--muted)}
.nav-search input:focus{background:#fff;border:1.5px solid var(--brand);box-shadow:var(--sh-sm)}
@media(min-width:1100px){.nav-search:focus-within{width:320px}}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:16px}
.nav-phone{font-size:14px;color:var(--muted);white-space:nowrap}
.nav-phone:hover{color:var(--brand);text-decoration:none}
.hamburger{display:none;width:40px;height:40px;border-radius:10px;flex-direction:column;justify-content:center;align-items:center;gap:4px;border:1px solid var(--line)}
.hamburger span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px}
.hamburger:hover{background:var(--brand-pale)}
.nav-tabs{background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .25s var(--ease)}
.nav-tabs.is-stuck{box-shadow:var(--sh-md)}
.nav-tabs-inner{display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto;scroll-snap-type:x proximity;scrollbar-width:none}
.nav-tabs-inner::-webkit-scrollbar{display:none}
.tab{
  flex:0 0 auto;scroll-snap-align:start;padding:7px 16px;border-radius:999px;font-size:14px;
  color:var(--muted);white-space:nowrap;transition:all .22s var(--ease);
}
.tab:hover{background:var(--brand-pale);color:var(--brand);text-decoration:none}
.tab.active{background:var(--brand);color:#fff;font-weight:600}
.tab.active:hover{background:var(--brand-light);color:#fff}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;background:#fff;z-index:120;display:none;flex-direction:column}
.drawer.open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px;padding:0 16px;border-bottom:1px solid var(--line)}
.drawer-close{width:36px;height:36px;border-radius:10px;font-size:22px;line-height:1;color:var(--muted);border:1px solid var(--line)}
.drawer-close:hover{background:var(--brand-pale);color:var(--brand)}
.drawer-body{flex:1;overflow-y:auto;padding:16px}
.drawer-body .nav-search{width:100%;margin-bottom:16px}
.drawer-link{display:block;padding:0 4px;height:56px;line-height:56px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line)}
.drawer-link:hover{color:var(--brand);text-decoration:none}
.drawer-link.active{color:var(--brand);font-weight:700;border-left:3px solid var(--brand);padding-left:12px}
.drawer-foot{padding:12px 16px 20px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  transition:all .22s var(--ease);text-decoration:none;white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:translateY(1px);box-shadow:none}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--sh-sm)}
.btn-accent:hover{background:var(--accent-deep);color:#fff;box-shadow:var(--sh-lg)}
.btn-outline{border:1.5px solid var(--brand);color:var(--brand);background:transparent}
.btn-outline:hover{background:var(--brand-pale);color:var(--brand)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.7);color:#fff;background:rgba(255,255,255,.06)}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;border-color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.link-arrow span{transition:transform .22s var(--ease)}
.link-arrow:hover span{transform:translateX(4px)}
.link-more{font-size:14px;font-weight:600;white-space:nowrap}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--brand-deep);color:#fff}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;opacity:.4}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(118deg,rgba(8,51,47,.95) 0%,rgba(11,76,72,.88) 52%,rgba(11,76,72,.74) 100%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:48px;align-items:center;padding-top:76px;padding-bottom:84px}
.hero h1{color:#fff;max-width:15em}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;color:#B9C9C6;margin-bottom:16px;text-transform:uppercase}
.hero-kicker::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:#D5E2E0;max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,255,255,.16)}
.hero-trust li{font-size:12px;color:#B9C9C6;display:flex;align-items:center;gap:6px}
.hero-trust strong{color:#fff;font-size:14px;font-variant-numeric:tabular-nums}
.hero-visual{position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--sh-lg)}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-visual::after{content:"";position:absolute;inset:0;background:rgba(11,76,72,.08)}

/* ---------- highlight bar ---------- */
.highlight-bar{background:var(--brand-pale)}
.highlight-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px;padding-top:26px;padding-bottom:26px}
.hi-item{display:flex;gap:12px;align-items:flex-start}
.hi-ico{flex:0 0 auto;width:36px;height:36px;border-radius:10px;background:#fff;color:var(--brand);display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-sm)}
.hi-ico svg{width:20px;height:20px}
.hi-item h4{font-size:14px;margin-bottom:2px}
.hi-item p{font-size:12px;color:var(--muted);line-height:1.65}

/* ---------- sections ---------- */
.section{padding-top:96px;padding-bottom:0}
.section-alt{background:#fff;margin-top:96px;padding-bottom:96px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-sub{margin-top:10px;font-size:14px;color:var(--muted);max-width:52em}

/* ---------- cards ---------- */
.card{
  background:var(--card);border-radius:var(--r-card);box-shadow:var(--sh-sm);
  overflow:hidden;transition:transform .22s var(--ease),box-shadow .22s var(--ease);
  display:flex;flex-direction:column;height:100%;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-md)}
.card-cover{position:relative;display:block;overflow:hidden}
.card-cover img{width:100%;object-fit:cover;transition:transform .35s var(--ease)}
.card-lg .card-cover img{aspect-ratio:16/9}
.card:hover .card-cover img{transform:scale(1.04)}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3 a{color:var(--ink)}
.card-body h3 a:hover{color:var(--brand);text-decoration:none}
.card-desc{font-size:14px;line-height:1.75;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.badge{
  position:absolute;left:14px;top:14px;background:var(--accent);color:#fff;
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;letter-spacing:.04em;
}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--brand-pale);color:var(--brand);font-size:12px}
.card-meta{display:flex;flex-wrap:wrap;gap:8px}
.card-lg .card-body{gap:14px}
.card-tall .card-cover img{aspect-ratio:4/3}
.card-row{flex-direction:row;align-items:center;gap:0}
.card-row .card-cover{flex:0 0 132px;align-self:stretch}
.card-row .card-cover img{width:132px;height:100%;min-height:104px}
.card-row .card-body{padding:16px 18px;gap:8px}
.card-row h3{font-size:16px}
.card-row .card-desc{-webkit-line-clamp:2;font-size:13px}

/* ---------- cms list ---------- */
.cms-list{background:transparent}
.cms-row{
  display:flex;gap:18px;align-items:center;padding:18px 16px;border-bottom:1px solid var(--line);
  border-radius:var(--r-img);transition:background .22s var(--ease),transform .22s var(--ease);color:inherit;
}
.cms-row:hover{background:#fff;text-decoration:none;transform:translateX(3px)}
.cms-row:hover h3{color:var(--brand)}
.cms-row:hover .cms-arrow{transform:translateX(4px);color:var(--accent)}
.cms-thumb{flex:0 0 160px;width:160px;height:100px;object-fit:cover;border-radius:var(--r-img)}
.cms-main{flex:1;min-width:0}
.cms-main h3{font-size:17px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .22s var(--ease)}
.cms-main p{margin-top:6px;font-size:14px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-meta{display:flex;align-items:center;gap:12px;margin-top:10px}
.cms-date{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.cms-arrow{flex:0 0 auto;color:var(--muted);font-size:18px;transition:transform .22s var(--ease),color .22s var(--ease)}
.pill{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;letter-spacing:.04em}
.pill-soft{background:var(--brand-pale);color:var(--brand)}
.pill-accent{background:var(--accent-pale);color:var(--accent-deep)}

/* ---------- sidebar ---------- */
.side-card{background:#fff;border-radius:var(--r-card);box-shadow:var(--sh-sm);padding:20px;margin-bottom:20px}
.side-card h3{font-size:16px;margin-bottom:14px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{display:inline-flex;height:28px;align-items:center;padding:0 12px;border-radius:999px;background:var(--page);color:var(--text);font-size:12px}
.tag-cloud a:hover{background:var(--brand-pale);color:var(--brand);text-decoration:none}
.side-rec{display:block;padding:12px 0;border-bottom:1px dashed var(--line);color:inherit}
.side-rec:last-child{border-bottom:none;padding-bottom:0}
.side-rec h4{font-size:14px;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .22s var(--ease)}
.side-rec span{display:block;margin-top:6px;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.side-rec:hover{text-decoration:none}
.side-rec:hover h4{color:var(--brand)}
.side-empty{font-size:13px;color:var(--muted)}

/* ---------- empty state ---------- */
.empty-state{min-height:120px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;text-align:center;background:#fff;border-radius:var(--r-card);box-shadow:var(--sh-sm);padding:28px 20px}
.empty-state svg{width:48px;height:48px;color:var(--brand);opacity:.3}
.empty-title{font-size:15px;color:var(--ink)}
.empty-sub{font-size:12px;color:var(--muted);margin-bottom:8px}

/* ---------- reviews ---------- */
.review-track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 4px 20px;scrollbar-width:none}
.review-track::-webkit-scrollbar{display:none}
.review-card{
  flex:0 0 340px;scroll-snap-align:start;background:#fff;border-radius:var(--r-card);
  box-shadow:var(--sh-md);padding:22px;display:flex;flex-direction:column;gap:12px;
}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{width:44px;height:44px;border-radius:999px;background:var(--brand-pale);color:var(--brand);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex:0 0 auto}
.review-name{font-size:15px;font-weight:600;color:var(--ink)}
.review-role{font-size:12px;color:var(--muted)}
.review-stars{color:var(--accent);font-size:14px;letter-spacing:2px;font-variant-numeric:tabular-nums}
.review-text{font-size:14px;line-height:1.85;color:var(--text);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.review-time{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.carousel-nav{display:flex;gap:10px}
.carousel-btn{
  width:40px;height:40px;border-radius:999px;background:#fff;border:1px solid var(--line);
  color:var(--brand);font-size:18px;line-height:1;display:flex;align-items:center;justify-content:center;
  transition:all .22s var(--ease);
}
.carousel-btn:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.carousel-btn:disabled{opacity:.4;cursor:not-allowed;background:#fff;color:var(--brand);border-color:var(--line)}
.review-progress{height:4px;border-radius:999px;background:var(--line);overflow:hidden;margin-top:4px}
.review-progress span{display:block;height:100%;width:24%;background:var(--accent);border-radius:999px;transition:width .25s var(--ease)}

/* ---------- guarantee ---------- */
.guarantee{background:var(--brand-pale);margin-top:96px}
.guarantee-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));padding:30px 0}
.g-item{display:flex;gap:12px;align-items:flex-start;padding:0 22px;border-left:1px solid rgba(11,76,72,.14)}
.g-item:first-child{border-left:none;padding-left:0}
.g-item svg{width:28px;height:28px;color:var(--brand);flex:0 0 auto}
.g-item h4{font-size:15px;margin-bottom:4px}
.g-item p{font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- faq ---------- */
.faq-card{background:#fff;border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line);position:relative}
.faq-item:last-child{border-bottom:none}
.faq-item summary{
  list-style:none;cursor:pointer;padding:0 22px;min-height:56px;display:flex;align-items:center;justify-content:space-between;
  gap:16px;font-size:17px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"＋";font-size:18px;color:var(--brand);transition:transform .2s var(--ease);font-weight:400}
.faq-item[open] summary::after{content:"－";transform:rotate(180deg)}
.faq-item[open]{box-shadow:inset 3px 0 0 var(--brand)}
.faq-answer{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--text)}
.faq-item summary:hover{color:var(--brand)}

/* ---------- cta ---------- */
.cta{margin-top:96px;background:var(--brand-deep);color:#fff;position:relative;overflow:hidden}
.cta::before{
  content:"";position:absolute;inset:0;opacity:.06;
  background-image:repeating-linear-gradient(135deg,#fff 0 1px,transparent 1px 14px);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:48px;padding-top:70px;padding-bottom:70px;align-items:start}
.cta h2{color:#fff}
.cta-lead{margin-top:16px;font-size:15px;color:#B9C9C6;line-height:1.85;max-width:32em}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:#D5E2E0}
.cta-points svg{width:18px;height:18px;color:var(--accent);flex:0 0 auto;margin-top:4px}
.form-card{background:#fff;border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-lg)}
.form-card h3{font-size:18px;margin-bottom:6px}
.form-card .form-hint{font-size:12px;color:var(--muted);margin-bottom:18px}
.form-field{margin-bottom:14px}
.form-field label{display:block;font-size:12px;color:var(--muted);margin-bottom:6px;letter-spacing:.04em}
.form-field input,.form-field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;
  padding:0 14px;height:46px;font-size:14px;outline:none;transition:border-color .2s,box-shadow .2s;
}
.form-field textarea{height:88px;padding:12px 14px;resize:vertical;line-height:1.7}
.form-field input:focus,.form-field textarea:focus{border:1.5px solid var(--brand);box-shadow:var(--sh-sm)}
.form-note{font-size:12px;color:var(--muted);margin-top:12px;text-align:center}
.form-msg{display:none;margin-top:12px;font-size:13px;color:var(--ok);text-align:center}
.form-msg.show{display:block}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-deep);color:#B9C9C6;margin-top:0;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand .logo{color:#fff}
.footer-brand .logo-mark{color:#fff}
.footer-desc{margin-top:16px;font-size:13px;line-height:1.85;color:#B9C9C6;max-width:30em}
.footer-contact{margin-top:18px;display:flex;flex-direction:column;gap:6px;font-size:13px}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px}
.footer-col a{display:block;font-size:13px;color:#B9C9C6;padding:5px 0}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:12px;color:#8FA5A2}
.footer-bottom a{color:#8FA5A2}
.footer-bottom a:hover{color:#fff}

/* ---------- responsive ---------- */
@media(max-width:1279px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:1023px){
  .nav-phone{display:none}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding-top:56px;padding-bottom:64px}
  .hero-visual{order:2}
  .hero-copy{order:1}
  .highlight-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
  .guarantee-grid{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:24px}
  .g-item:nth-child(3){border-left:none;padding-left:0}
  .cta-inner{grid-template-columns:1fr;gap:32px;padding-top:56px;padding-bottom:56px}
  .section{padding-top:72px}
  .section-alt{margin-top:72px;padding-bottom:72px}
  .guarantee,.cta{margin-top:72px}
}
@media(max-width:767px){
  .nav-top-inner{height:56px;gap:12px}
  .nav-search{display:none}
  .hamburger{display:flex}
  .nav-actions .btn{display:none}
  .logo-text{font-size:16px}
  .section{padding-top:56px}
  .section-alt{margin-top:56px;padding-bottom:56px}
  .guarantee,.cta{margin-top:56px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px}
  .highlight-grid{grid-template-columns:1fr;gap:18px}
  .guarantee-grid{grid-template-columns:1fr}
  .g-item{border-left:none;padding:0}
  .card-row{flex-direction:column;align-items:stretch}
  .card-row .card-cover{flex:none}
  .card-row .card-cover img{width:100%;height:170px}
  .cms-row{flex-wrap:wrap;gap:14px}
  .cms-thumb{flex:0 0 112px;width:112px;height:76px}
  .review-card{flex:0 0 84%}
  .hero-actions .btn{width:100%;max-width:320px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta .btn{width:100%;max-width:320px}
}

/* roulang page: article */
:root{
    --brand:#0B4C48;
    --brand-dark:#08332F;
    --brand-light:#12706A;
    --brand-soft:#E3F0EE;
    --accent:#E4762F;
    --accent-hover:#C8601F;
    --accent-soft:#FDEEE3;
    --ink:#10201F;
    --text:#33413F;
    --muted:#6B7C7A;
    --line:#E4EAE8;
    --bg:#F5F8F7;
    --card:#FFFFFF;
    --ok:#2F9E6B;
    --warn:#D9822B;
    --err:#D0503F;
    --r-card:14px;
    --r-img:12px;
    --r-btn:10px;
    --sh-sm:0 1px 2px rgba(16,32,31,.06);
    --sh-md:0 6px 18px rgba(16,32,31,.08);
    --sh-lg:0 18px 40px rgba(16,32,31,.12);
    --header-h:68px;
    --tabs-h:48px;
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    letter-spacing:0;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
  a:hover{color:var(--brand-light);}
  h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.3;}
  h1{font-weight:800;}
  h2{font-weight:700;}
  h3,h4{font-weight:600;}
  p{margin:0 0 1.15em;}
  ul,ol{margin:0 0 1.15em;padding-left:1.3em;}
  button,input,textarea{font-family:inherit;font-size:inherit;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:24px;
    padding-right:24px;
  }
  @media (min-width:1440px){ .container{max-width:1280px;} }

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:80;
    background:#fff;
    border-bottom:1px solid var(--line);
  }
  .header-top{background:#fff;}
  .header-top-inner{
    display:flex;
    align-items:center;
    gap:19px;
    height:var(--header-h);
  }
  .logo{display:inline-flex;align-items:center;gap:10px;flex:none;}
  .logo-mark{
    width:32px;height:32px;flex:none;
    display:inline-flex;align-items:center;justify-content:center;
    border-radius:10px;
    background:var(--brand-soft);
    color:var(--brand);
  }
  .logo-mark svg{width:20px;height:20px;}
  .logo-text{
    font-size:18px;
    font-weight:800;
    color:var(--brand);
    letter-spacing:.01em;
    white-space:nowrap;
  }
  .header-search{
    position:relative;
    display:flex;align-items:center;
    width:240px;
    margin-left:8px;
    transition:width .25s var(--ease);
  }
  .header-search:focus-within{width:320px;}
  .header-search input{
    width:100%;
    height:40px;
    padding:0 42px 0 16px;
    border:1px solid transparent;
    border-radius:999px;
    background:var(--bg);
    color:var(--text);
    outline:none;
    transition:border-color .2s var(--ease),background .2s var(--ease);
  }
  .header-search input::placeholder{color:var(--muted);}
  .header-search input:focus{
    border:1.5px solid var(--brand);
    background:#fff;
  }
  .header-search button{
    position:absolute;right:6px;
    width:32px;height:32px;
    display:inline-flex;align-items:center;justify-content:center;
    border:none;border-radius:999px;
    background:transparent;color:var(--muted);
    cursor:pointer;
    transition:color .2s var(--ease),background .2s var(--ease);
  }
  .header-search button:hover{color:var(--brand);background:var(--brand-soft);}
  .header-search button svg{width:16px;height:16px;}
  .header-actions{
    display:flex;align-items:center;gap:14px;
    margin-left:auto;
  }
  .header-phone{
    font-size:14px;
    color:var(--muted);
    white-space:nowrap;
    font-variant-numeric:tabular-nums;
  }
  .header-phone:hover{color:var(--brand);}
  .menu-toggle{
    display:none;
    width:40px;height:40px;
    align-items:center;justify-content:center;
    border:1px solid var(--line);
    border-radius:10px;
    background:#fff;color:var(--brand);
    cursor:pointer;
    transition:background .2s var(--ease),border-color .2s var(--ease);
  }
  .menu-toggle:hover{background:var(--brand-soft);border-color:var(--brand-soft);}
  .menu-toggle svg{width:20px;height:20px;}

  .nav-tabs{
    border-top:1px solid var(--line);
    background:#fff;
    transition:box-shadow .25s var(--ease);
  }
  .nav-tabs.is-stuck{box-shadow:var(--sh-md);}
  .nav-tabs-inner{
    display:flex;align-items:center;gap:8px;
    height:var(--tabs-h);
    overflow-x:auto;
    scroll-snap-type:x proximity;
    scrollbar-width:none;
    -ms-overflow-style:none;
  }
  .nav-tabs-inner::-webkit-scrollbar{display:none;}
  .tab{
    flex:none;
    scroll-snap-align:start;
    display:inline-flex;align-items:center;
    height:34px;
    padding:0 16px;
    border-radius:999px;
    font-size:14px;
    font-weight:500;
    color:var(--muted);
    white-space:nowrap;
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  .tab:hover{background:var(--brand-soft);color:var(--brand);}
  .tab.active{background:var(--brand);color:#fff;}
  .tab.active:hover{background:var(--brand-light);color:#fff;}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;
    padding:0 24px;
    border-radius:var(--r-btn);
    border:1.5px solid transparent;
    font-size:15px;
    font-weight:600;
    line-height:1;
    cursor:pointer;
    white-space:nowrap;
    transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
  }
  .btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-sm);}
  .btn-primary:hover{background:var(--accent-hover);color:#fff;box-shadow:var(--sh-lg);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);box-shadow:none;}
  .btn-outline{border-color:var(--brand);color:var(--brand);background:transparent;}
  .btn-outline:hover{background:var(--brand-soft);color:var(--brand);}
  .btn-outline:active{background:#d5e8e5;}
  .btn-light{border-color:rgba(255,255,255,.6);color:#fff;background:transparent;}
  .btn-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
  .btn-sm{height:38px;padding:0 18px;font-size:14px;}
  .btn-block{width:100%;}
  .btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

  /* ============ 移动端抽屉 ============ */
  .drawer-mask{
    position:fixed;inset:0;
    background:rgba(16,32,31,.45);
    opacity:0;visibility:hidden;
    transition:opacity .25s var(--ease),visibility .25s var(--ease);
    z-index:90;
  }
  .drawer-mask.open{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;left:0;bottom:0;
    width:min(86vw,360px);
    background:#fff;
    z-index:100;
    display:flex;flex-direction:column;
    transform:translateX(-102%);
    transition:transform .28s var(--ease);
    box-shadow:var(--sh-lg);
  }
  .drawer.open{transform:translateX(0);}
  .drawer-head{
    display:flex;align-items:center;justify-content:space-between;
    padding:14px 18px;
    border-bottom:1px solid var(--line);
  }
  .drawer-close{
    width:38px;height:38px;
    display:inline-flex;align-items:center;justify-content:center;
    border:1px solid var(--line);border-radius:10px;
    background:#fff;color:var(--muted);cursor:pointer;
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  .drawer-close:hover{background:var(--brand-soft);color:var(--brand);}
  .drawer-body{padding:16px 18px;overflow-y:auto;flex:1;}
  .drawer-search{margin-bottom:14px;}
  .drawer-search input{
    width:100%;height:44px;padding:0 16px;
    border:1px solid var(--line);border-radius:999px;
    background:var(--bg);outline:none;color:var(--text);
  }
  .drawer-search input:focus{border:1.5px solid var(--brand);background:#fff;}
  .drawer-link{
    display:flex;align-items:center;
    height:56px;padding:0 12px;
    border-radius:10px;
    font-size:18px;color:var(--text);
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  .drawer-link:hover{background:var(--brand-soft);color:var(--brand);}
  .drawer-link.active{color:var(--brand);font-weight:600;background:var(--brand-soft);}
  .drawer-foot{padding:16px 18px;border-top:1px solid var(--line);}

  /* ============ 面包屑 ============ */
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13px;
    color:var(--muted);
    line-height:1.6;
  }
  .breadcrumb a{color:var(--muted);}
  .breadcrumb a:hover{color:var(--brand-light);}
  .breadcrumb .sep{color:#B6C2C0;}
  .breadcrumb .current{color:var(--brand);}

  /* ============ 文章头部 ============ */
  .article-hero{
    position:relative;
    background:#F1F6F5;
    border-bottom:1px solid var(--line);
    overflow:hidden;
    scroll-margin-top:124px;
  }
  .article-hero::before{
    content:"";
    position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-2.webp');
    background-size:cover;
    background-position:center;
    opacity:.10;
  }
  .article-hero-inner{position:relative;padding:36px 0 40px;}
  .article-hero .breadcrumb{margin-bottom:18px;}
  .article-title{
    font-size:clamp(24px,3vw,34px);
    font-weight:800;
    color:var(--ink);
    line-height:1.35;
    max-width:900px;
    text-wrap:balance;
  }
  .article-meta{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px;
    margin-top:18px;
    padding-top:18px;
    border-top:1px solid var(--line);
    font-size:13px;
    color:var(--muted);
    font-variant-numeric:tabular-nums;
  }
  .article-meta .dot{
    width:4px;height:4px;border-radius:999px;
    background:#C4D1CF;flex:none;
  }
  .article-meta .meta-cat{color:var(--brand);font-weight:600;}

  /* ============ 正文布局 ============ */
  .article-layout{
    display:grid;
    grid-template-columns:minmax(0,1fr) 260px;
    gap:56px;
    padding-top:56px;
    padding-bottom:80px;
    align-items:start;
  }
  .article-main{min-width:0;}
  .article-content{
    max-width:800px;
    font-size:16px;
    line-height:1.9;
    color:var(--text);
    scroll-margin-top:124px;
  }
  .article-content > *:first-child{margin-top:0;}
  .article-content h2{
    font-size:clamp(20px,2.2vw,24px);
    font-weight:700;
    color:var(--ink);
    margin:40px 0 16px;
    padding-left:12px;
    border-left:4px solid var(--brand);
    line-height:1.45;
    scroll-margin-top:124px;
  }
  .article-content h3{
    font-size:18px;
    font-weight:600;
    color:var(--ink);
    margin:30px 0 12px;
    line-height:1.5;
    scroll-margin-top:124px;
  }
  .article-content h4{
    font-size:16px;font-weight:600;color:var(--ink);margin:24px 0 10px;
  }
  .article-content p{margin:0 0 1.15em;}
  .article-content a{color:var(--brand);border-bottom:1px solid rgba(11,76,72,.3);}
  .article-content a:hover{color:var(--brand-light);border-bottom-color:var(--brand-light);}
  .article-content ul,.article-content ol{margin:0 0 1.15em;padding-left:1.4em;}
  .article-content ul{list-style:none;padding-left:1.2em;}
  .article-content ul > li{position:relative;margin-bottom:.5em;}
  .article-content ul > li::before{
    content:"";position:absolute;left:-1.2em;top:.72em;
    width:6px;height:6px;border-radius:999px;background:var(--brand);
  }
  .article-content ol > li{margin-bottom:.5em;}
  .article-content blockquote{
    margin:24px 0;
    padding:16px 20px;
    background:var(--brand-soft);
    border-left:4px solid var(--brand);
    border-radius:0 var(--r-img) var(--r-img) 0;
    color:#22423F;
  }
  .article-content blockquote p:last-child{margin-bottom:0;}
  .article-content img{
    border-radius:var(--r-img);
    margin:24px auto;
    width:100%;
    object-fit:cover;
  }
  .article-content figure{margin:24px 0;}
  .article-content figcaption{
    margin-top:10px;
    text-align:center;
    font-size:12px;
    color:var(--muted);
  }
  .article-content table{
    width:100%;
    border-collapse:collapse;
    margin:24px 0;
    font-size:14px;
  }
  .article-content .table-wrap{overflow-x:auto;margin:24px 0;border-radius:var(--r-img);border:1px solid var(--line);}
  .article-content table th,
  .article-content table td{
    padding:12px 14px;
    border-bottom:1px solid var(--line);
    text-align:left;
    vertical-align:top;
  }
  .article-content table thead th{background:var(--brand-soft);color:var(--brand);font-weight:600;}
  .article-content table tbody tr:nth-child(even){background:#FAFCFC;}
  .article-content hr{border:none;border-top:1px solid var(--line);margin:32px 0;}
  .article-content code{
    background:#EDF3F2;color:#0B4C48;padding:2px 6px;border-radius:6px;font-size:14px;
  }

  /* ============ 目录 ============ */
  .article-aside{
    position:sticky;
    top:132px;
    align-self:start;
  }
  .toc-card{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:18px 18px 14px;
    box-shadow:var(--sh-sm);
  }
  .toc-card h4{
    font-size:13px;font-weight:600;color:var(--muted);
    letter-spacing:.08em;margin-bottom:12px;
  }
  .toc-list{list-style:none;margin:0;padding:0;}
  .toc-list li{margin:0;}
  .toc-list a{
    display:block;
    padding:6px 10px;
    border-left:2px solid transparent;
    border-radius:0 8px 8px 0;
    font-size:14px;
    color:var(--muted);
    line-height:1.6;
  }
  .toc-list a:hover{color:var(--brand);background:var(--bg);}
  .toc-list a.active{
    color:var(--brand);
    font-weight:600;
    border-left-color:var(--brand);
    background:var(--brand-soft);
  }
  .toc-list .toc-h3 a{padding-left:22px;font-size:13px;}
  .toc-empty{font-size:13px;color:var(--muted);line-height:1.7;}

  /* ============ 标签与操作 ============ */
  .article-foot{
    max-width:800px;
    margin-top:40px;
    padding-top:24px;
    border-top:1px solid var(--line);
  }
  .tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
  .tag-row .tag-label{font-size:13px;color:var(--muted);margin-right:2px;}
  .tag{
    display:inline-flex;align-items:center;
    height:30px;padding:0 14px;
    border-radius:999px;
    background:var(--brand-soft);
    color:var(--brand);
    font-size:13px;
    letter-spacing:.02em;
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  a.tag:hover{background:var(--brand);color:#fff;}
  .article-actions{margin-top:24px;display:flex;flex-wrap:wrap;gap:12px;}

  /* ============ 空态 ============ */
  .empty-state{
    max-width:800px;
    min-height:220px;
    display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:10px;
    text-align:center;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:40px 24px;
    box-shadow:var(--sh-sm);
  }
  .empty-state svg{width:48px;height:48px;color:var(--brand);opacity:.3;}
  .empty-state .empty-title{font-size:15px;font-weight:600;color:var(--ink);}
  .empty-state .empty-sub{font-size:12px;color:var(--muted);}
  .empty-state .btn{margin-top:8px;}

  /* ============ 相关推荐 ============ */
  .related-section{padding:0 0 80px;}
  .section-head{
    display:flex;align-items:flex-end;justify-content:space-between;
    gap:16px;flex-wrap:wrap;
    margin-bottom:28px;
  }
  .section-head h2{font-size:clamp(22px,2.6vw,28px);}
  .section-head p{margin:6px 0 0;font-size:14px;color:var(--muted);}
  .link-more{
    font-size:14px;font-weight:600;color:var(--brand);
    border-bottom:1px solid transparent;
    transition:border-color .2s var(--ease),color .2s var(--ease);
  }
  .link-more:hover{border-bottom-color:var(--brand-light);color:var(--brand-light);}
  .related-grid{
    display:grid;
    grid-template-columns:1.25fr 1fr;
    gap:24px;
  }
  .related-card{
    display:flex;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-sm);
    overflow:hidden;
    color:var(--text);
    transition:box-shadow .22s var(--ease),transform .22s var(--ease);
  }
  .related-card:hover{box-shadow:var(--sh-md);transform:translateY(-3px);color:var(--text);}
  .related-card-lg{
    grid-row:span 2;
    flex-direction:column;
  }
  .related-card-sm{flex-direction:row;align-items:stretch;min-height:150px;}
  .card-cover{overflow:hidden;background:#EDF3F2;}
  .related-card-lg .card-cover{aspect-ratio:16/9;width:100%;}
  .related-card-sm .card-cover{width:150px;flex:none;}
  .card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
  .related-card:hover .card-cover img{transform:scale(1.04);}
  .related-body{padding:20px 22px;display:flex;flex-direction:column;gap:8px;}
  .badge{
    display:inline-flex;align-items:center;align-self:flex-start;
    height:24px;padding:0 10px;
    border-radius:999px;
    background:var(--accent-soft);
    color:var(--accent-hover);
    font-size:12px;font-weight:600;letter-spacing:.04em;
  }
  .related-card h3{font-size:18px;line-height:1.45;}
  .related-card-sm h3{font-size:16px;}
  .related-card p{font-size:14px;line-height:1.7;color:var(--muted);margin:0;}
  .related-arrow{
    margin-top:auto;
    font-size:14px;font-weight:600;color:var(--brand);
    display:inline-flex;align-items:center;gap:6px;
  }
  .related-arrow span{transition:transform .2s var(--ease);}
  .related-card:hover .related-arrow span{transform:translateX(4px);}

  /* ============ 咨询 CTA ============ */
  .cta-band{
    position:relative;
    background:var(--brand-dark);
    color:#fff;
    overflow:hidden;
  }
  .cta-band::after{
    content:"";
    position:absolute;inset:0;
    background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.05) 0 2px,transparent 2px 12px);
    pointer-events:none;
  }
  .cta-inner{
    position:relative;
    display:grid;
    grid-template-columns:1.15fr .85fr;
    gap:48px;
    align-items:center;
    padding:64px 0;
    scroll-margin-top:124px;
  }
  .cta-inner h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:14px;}
  .cta-inner p{color:#B9C9C6;margin:0 0 20px;font-size:15px;}
  .cta-points{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
  .cta-points li{
    position:relative;
    padding-left:26px;
    font-size:15px;
    color:#D7E3E1;
  }
  .cta-points li::before{
    content:"";
    position:absolute;left:0;top:.75em;
    width:12px;height:2px;background:var(--accent);
  }
  .cta-panel{
    background:rgba(255,255,255,.06);
    border:1px solid rgba(255,255,255,.14);
    border-radius:var(--r-card);
    padding:26px;
  }
  .cta-panel h3{color:#fff;font-size:17px;margin-bottom:14px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
  .cta-note{margin-top:14px;font-size:13px;color:#9FB4B1;}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--brand-dark);color:#B9C9C6;padding:64px 0 28px;}
  .site-footer .logo-text{color:#fff;}
  .site-footer .logo-mark{background:rgba(255,255,255,.1);color:#8FD3CC;}
  .footer-grid{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1fr;
    gap:40px;
  }
  .footer-brand .logo{margin-bottom:16px;}
  .footer-desc{font-size:14px;line-height:1.85;color:#9FB4B1;margin:0 0 18px;max-width:420px;}
  .footer-contact{display:flex;flex-direction:column;gap:6px;font-size:14px;color:#B9C9C6;font-variant-numeric:tabular-nums;}
  .footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
  .footer-col a{
    display:block;
    font-size:14px;
    color:#B9C9C6;
    padding:5px 0;
    transition:color .2s var(--ease);
  }
  .footer-col a:hover{color:#fff;text-decoration:underline;}
  .footer-bottom{
    margin-top:48px;
    padding-top:22px;
    border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
    font-size:13px;color:#9FB4B1;
  }
  .footer-bottom a{color:#B9C9C6;}
  .footer-bottom a:hover{color:#fff;}

  /* ============ 响应式 ============ */
  @media (min-width:1024px) and (max-width:1279px){
    .container{max-width:100%;}
    .article-layout{grid-template-columns:minmax(0,1fr) 240px;gap:36px;}
  }
  @media (max-width:1023px){
    .article-layout{grid-template-columns:minmax(0,1fr);gap:0;padding-top:40px;padding-bottom:56px;}
    .article-aside{display:none;}
    .cta-inner{grid-template-columns:1fr;gap:28px;padding:56px 0;}
    .related-grid{grid-template-columns:1fr;}
    .related-card-lg{grid-row:auto;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .footer-brand{grid-column:1 / -1;}
  }
  @media (max-width:900px){
    .header-search{display:none;}
  }
  @media (max-width:767px){
    .container{padding-left:16px;padding-right:16px;}
    :root{--header-h:56px;}
    .header-top-inner{gap:12px;}
    .logo-text{font-size:16px;}
    .header-phone{display:none;}
    .menu-toggle{display:inline-flex;}
    .header-actions .btn{display:none;}
    .article-hero-inner{padding:26px 0 30px;}
    .article-hero .breadcrumb{margin-bottom:14px;}
    .article-layout{padding-top:32px;padding-bottom:48px;}
    .article-content{font-size:16px;line-height:1.85;}
    .article-content h2{margin-top:32px;}
    .related-card-sm{flex-direction:column;min-height:0;}
    .related-card-sm .card-cover{width:100%;aspect-ratio:16/9;}
    .cta-actions .btn{width:100%;max-width:320px;}
    .article-actions .btn{width:100%;max-width:320px;}
    .related-section{padding-bottom:56px;}
    .site-footer{padding:48px 0 24px;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
  }
  @media (max-width:520px){
    .article-meta{font-size:12px;gap:8px;}
    .related-body{padding:16px 16px 18px;}
    .tag{height:28px;padding:0 12px;font-size:12px;}
  }

/* roulang page: category2 */
:root{
    --brand:#0B4C48;
    --brand-deep:#08332F;
    --brand-light:#12706A;
    --brand-soft:#E3F0EE;
    --accent:#E4762F;
    --accent-deep:#C8601F;
    --accent-soft:#FDEEE3;
    --ink:#10201F;
    --text:#33413F;
    --muted:#6B7C7A;
    --line:#E4EAE8;
    --bg:#F5F8F7;
    --card:#FFFFFF;
    --ok:#2F9E6B;
    --warn:#D9822B;
    --err:#D0503F;
    --r-card:14px;
    --r-img:12px;
    --r-btn:10px;
    --r-pill:999px;
    --sh-sm:0 1px 2px rgba(16,32,31,.06);
    --sh-md:0 6px 18px rgba(16,32,31,.08);
    --sh-lg:0 18px 40px rgba(16,32,31,.12);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--text);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:var(--brand);text-decoration:none;transition:color .22s var(--ease);}
  a:hover{color:var(--brand-light);}
  button{font-family:inherit;}
  input,textarea{font-family:inherit;font-size:15px;color:var(--ink);}
  h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.3;text-wrap:balance;}
  ul{margin:0;padding:0;list-style:none;}
  p{margin:0;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
  @media(min-width:1440px){.container{max-width:1280px;}}
  @media(max-width:767px){.container{padding:0 16px;}}

  /* ============ 头部 ============ */
  .site-header{position:sticky;top:0;z-index:60;background:#fff;box-shadow:var(--sh-sm);}
  .topbar{border-bottom:1px solid var(--line);background:#fff;}
  .topbar-inner{display:flex;align-items:center;gap:20px;height:68px;}
  .logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
  .logo-mark{width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;border-radius:9px;background:var(--brand-soft);color:var(--brand);}
  .logo-mark svg{width:18px;height:18px;}
  .logo-text{font-size:18px;font-weight:800;color:var(--brand);letter-spacing:.01em;white-space:nowrap;}
  .search-box{position:relative;display:flex;align-items:center;flex:0 1 240px;min-width:150px;height:40px;border-radius:var(--r-pill);background:var(--bg);border:1.5px solid transparent;transition:all .25s var(--ease);}
  .search-box:focus-within{border-color:var(--brand);background:#fff;box-shadow:var(--sh-sm);flex-basis:320px;}
  .search-box svg{width:17px;height:17px;color:var(--muted);margin-left:14px;flex:0 0 auto;}
  .search-box input{flex:1;min-width:0;height:100%;border:0;background:transparent;outline:none;padding:0 16px 0 8px;font-size:14px;}
  .search-box input::placeholder{color:var(--muted);}
  .top-actions{margin-left:auto;display:flex;align-items:center;gap:14px;}
  .top-phone{font-size:14px;color:var(--muted);white-space:nowrap;font-variant-numeric:tabular-nums;}
  .top-phone strong{color:var(--brand);font-weight:700;}
  .hamburger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--brand);align-items:center;justify-content:center;}
  .hamburger svg{width:20px;height:20px;}

  .nav-tabs{border-bottom:1px solid var(--line);background:#fff;transition:box-shadow .25s var(--ease);}
  .nav-tabs.is-stuck{box-shadow:var(--sh-md);}
  .nav-tabs-inner{display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto;scroll-snap-type:x proximity;scrollbar-width:none;}
  .nav-tabs-inner::-webkit-scrollbar{display:none;}
  .tab{flex:0 0 auto;display:inline-flex;align-items:center;height:32px;padding:0 16px;border-radius:var(--r-pill);font-size:14.5px;font-weight:600;color:var(--muted);scroll-snap-align:start;transition:all .22s var(--ease);}
  .tab:hover{background:var(--brand-soft);color:var(--brand);}
  .tab.active{background:var(--brand);color:#fff;}
  .tab.active:hover{background:var(--brand);color:#fff;}

  /* ============ 按钮 ============ */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-btn);border:1.5px solid transparent;font-size:15px;font-weight:600;cursor:pointer;background:#fff;transition:all .22s var(--ease);white-space:nowrap;}
  .btn svg{width:16px;height:16px;}
  .btn-sm{height:40px;padding:0 16px;font-size:14px;}
  .btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-sm);}
  .btn-primary:hover{background:var(--accent-deep);color:#fff;box-shadow:var(--sh-lg);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(1px);box-shadow:none;}
  .btn-outline{border-color:var(--brand);color:var(--brand);background:#fff;}
  .btn-outline:hover{background:var(--brand-soft);color:var(--brand);}
  .btn-outline:active{transform:translateY(1px);}
  .btn-ghost-light{border-color:rgba(255,255,255,.65);color:#fff;background:transparent;}
  .btn-ghost-light:hover{background:rgba(255,255,255,.14);color:#fff;}
  .btn-block{width:100%;}
  .btn:disabled{opacity:.45;cursor:not-allowed;transform:none !important;box-shadow:none;}
  .link-more{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand);padding-bottom:2px;background-image:linear-gradient(var(--brand-light),var(--brand-light));background-repeat:no-repeat;background-position:0 100%;background-size:0% 1.5px;transition:background-size .28s var(--ease),color .22s var(--ease);}
  .link-more svg{width:15px;height:15px;transition:transform .22s var(--ease);}
  .link-more:hover{color:var(--brand-light);background-size:100% 1.5px;}
  .link-more:hover svg{transform:translateX(4px);}

  /* ============ 通用板块 ============ */
  .section{padding:96px 0;}
  .section-soft{background:#fff;}
  .section-head{max-width:720px;margin-bottom:36px;}
  .section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;}
  .section-head p{margin-top:12px;font-size:15.5px;color:var(--muted);}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--brand-light);margin-bottom:12px;}
  .eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--accent);}

  /* ============ 分类横幅 ============ */
  .cat-banner{position:relative;overflow:hidden;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;color:#fff;}
  .cat-banner::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(11,76,72,.88) 0%,rgba(8,51,47,.62) 62%,rgba(11,76,72,.72) 100%);}
  .cat-banner .banner-inner{position:relative;z-index:1;padding:52px 0 54px;max-width:840px;}
  .brand-chip{display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:var(--r-pill);background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.26);font-size:12px;letter-spacing:.08em;font-weight:600;color:#fff;}
  .brand-chip svg{width:14px;height:14px;}
  .crumb{margin-top:16px;font-size:13px;color:rgba(255,255,255,.78);}
  .crumb a{color:rgba(255,255,255,.78);}
  .crumb a:hover{color:#fff;text-decoration:underline;}
  .crumb span{margin:0 8px;opacity:.6;}
  .cat-banner h1{margin-top:14px;font-size:clamp(28px,4vw,42px);font-weight:800;color:#fff;letter-spacing:.01em;}
  .cat-banner .banner-sub{margin-top:14px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.86);max-width:34em;}
  .banner-meta{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px;}
  .banner-meta span{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);font-size:13px;color:#fff;font-variant-numeric:tabular-nums;}

  /* ============ 概览条 ============ */
  .overview{background:var(--brand-soft);border-bottom:1px solid #D3E5E2;}
  .overview-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:32px 0;}
  .ov-item{display:flex;gap:12px;align-items:flex-start;}
  .ov-icon{width:34px;height:34px;flex:0 0 auto;border-radius:10px;background:#fff;color:var(--brand);display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-sm);}
  .ov-icon svg{width:18px;height:18px;}
  .ov-item h3{font-size:14px;font-weight:700;color:var(--brand-deep);}
  .ov-item p{font-size:12.5px;color:#4B6764;line-height:1.7;margin-top:2px;}

  /* ============ 卡片 ============ */
  .card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden;transition:box-shadow .22s var(--ease),transform .22s var(--ease);}
  .card:hover{box-shadow:var(--sh-md);transform:translateY(-3px);}
  .card-body{padding:22px;}
  .thumb{overflow:hidden;border-radius:var(--r-img);background:#E9EFEE;}
  .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
  .card:hover .thumb img{transform:scale(1.04);}
  .ratio-32{aspect-ratio:3/2;}
  .ratio-169{aspect-ratio:16/9;}

  .param-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
  .pill{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);font-size:12px;font-weight:600;letter-spacing:.06em;background:var(--brand-soft);color:var(--brand);}
  .pill-accent{background:var(--accent-soft);color:var(--accent-deep);}
  .pill-param{background:#fff;border:1px solid var(--line);color:var(--muted);letter-spacing:0;font-weight:500;}
  .card h3{font-size:19px;font-weight:600;line-height:1.45;}
  .card-lg h3{font-size:22px;}
  .card p.desc{margin-top:10px;font-size:14px;line-height:1.75;color:var(--muted);}
  .point-list{margin-top:14px;display:flex;flex-direction:column;gap:6px;}
  .point-list li{position:relative;padding-left:16px;font-size:14px;line-height:1.75;color:var(--text);}
  .point-list li::before{content:"";position:absolute;left:0;top:.68em;width:6px;height:6px;border-radius:50%;background:var(--brand);}
  .card-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;}
  .price-tag{font-size:15px;font-weight:700;color:var(--accent-deep);font-variant-numeric:tabular-nums;}
  .card-wide{display:grid;grid-template-columns:minmax(0,300px) minmax(0,1fr);align-items:stretch;}
  .card-wide .thumb{height:100%;min-height:230px;border-radius:0;}
  .card-wide .card-body{padding:26px 26px 26px 24px;}

  /* ============ 场景 ============ */
  .scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .scene-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-sm);transition:all .22s var(--ease);}
  .scene-card:hover{box-shadow:var(--sh-md);transform:translateY(-3px);border-color:#CFE1DE;}
  .scene-card .num{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.08em;font-variant-numeric:tabular-nums;}
  .scene-card h3{margin-top:12px;font-size:18px;font-weight:600;}
  .scene-card p{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.8;}

  /* ============ 流程 ============ */
  .flow{background:var(--brand-deep);color:#fff;position:relative;overflow:hidden;}
  .flow::before{content:"";position:absolute;inset:0;background-image:linear-gradient(115deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:26px 26px;opacity:.55;}
  .flow .container{position:relative;z-index:1;}
  .flow h2{color:#fff;}
  .flow .eyebrow{color:#8FC4BE;}
  .flow .section-head p{color:#B9C9C6;}
  .flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
  .flow-step{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-card);padding:24px;}
  .flow-step .step-no{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:var(--accent);color:#fff;font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;}
  .flow-step h3{margin-top:16px;font-size:17px;font-weight:600;color:#fff;}
  .flow-step p{margin-top:10px;font-size:13.5px;line-height:1.8;color:#B9C9C6;}

  /* ============ FAQ ============ */
  .faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
  .faq-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-sm);transition:all .22s var(--ease);}
  .faq-card:hover{box-shadow:var(--sh-md);border-color:#CFE1DE;}
  .faq-card h3{font-size:17px;font-weight:600;display:flex;gap:10px;align-items:flex-start;}
  .faq-card h3 span{color:var(--accent);font-weight:800;flex:0 0 auto;}
  .faq-card p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--text);padding-left:24px;}

  /* ============ CTA ============ */
  .cta-band{background:var(--brand-deep);color:#fff;position:relative;overflow:hidden;}
  .cta-band::before{content:"";position:absolute;inset:0;background-image:linear-gradient(135deg,rgba(255,255,255,.07) 1px,transparent 1px);background-size:24px 24px;opacity:.5;}
  .cta-band .container{position:relative;z-index:1;}
  .cta-inner{display:grid;grid-template-columns:7fr 5fr;gap:48px;padding:76px 0;align-items:start;}
  .cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);font-weight:700;}
  .cta-band .cta-lead{margin-top:14px;font-size:15.5px;line-height:1.85;color:#B9C9C6;max-width:32em;}
  .check-list{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
  .check-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:#E7EFED;}
  .check-list svg{width:18px;height:18px;color:var(--accent);flex:0 0 auto;margin-top:4px;}
  .form-card{background:#fff;border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-lg);}
  .form-card h3{font-size:17px;font-weight:700;color:var(--ink);}
  .form-card .form-tip{margin-top:6px;font-size:12.5px;color:var(--muted);}
  .field{margin-top:16px;}
  .field label{display:block;font-size:12px;color:var(--muted);margin-bottom:6px;letter-spacing:.04em;}
  .field input,.field textarea{width:100%;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;padding:0 14px;height:46px;outline:none;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);}
  .field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
  .field input:focus,.field textarea:focus{border-color:var(--brand);box-shadow:var(--sh-sm);}
  .field input:invalid:not(:placeholder-shown){border-color:var(--err);}
  .form-note{margin-top:12px;font-size:12px;color:var(--muted);line-height:1.7;}
  .form-msg{margin-top:12px;font-size:13px;color:var(--ok);display:none;}
  .form-msg.show{display:block;}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--brand-deep);color:#B9C9C6;padding:64px 0 28px;}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
  .site-footer .logo-text{color:#fff;}
  .site-footer .logo-mark{background:rgba(255,255,255,.12);color:#fff;}
  .footer-desc{margin-top:18px;font-size:13.5px;line-height:1.9;color:#B9C9C6;max-width:34em;}
  .footer-contact{margin-top:18px;display:flex;flex-direction:column;gap:6px;font-size:13px;color:#94A9A6;font-variant-numeric:tabular-nums;}
  .footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
  .footer-col a{display:block;font-size:13.5px;color:#B9C9C6;padding:5px 0;transition:color .2s var(--ease);}
  .footer-col a:hover{color:#fff;text-decoration:underline;}
  .footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px;color:#8FA5A2;}
  .footer-bottom a{color:#B9C9C6;}
  .footer-bottom a:hover{color:#fff;}

  /* ============ 移动抽屉 ============ */
  .drawer{position:fixed;inset:0;z-index:100;background:#fff;display:none;flex-direction:column;}
  .drawer.open{display:flex;}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--line);}
  .drawer-close{width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--brand);display:flex;align-items:center;justify-content:center;}
  .drawer-close svg{width:20px;height:20px;}
  .drawer-body{flex:1;overflow-y:auto;padding:16px;}
  .drawer-body .search-box{flex:1 1 auto;width:100%;margin-bottom:12px;}
  .drawer-body a.drawer-link{display:flex;align-items:center;justify-content:space-between;height:56px;font-size:18px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line);padding:0 4px;}
  .drawer-body a.drawer-link.active{color:var(--brand);}
  .drawer-foot{padding:14px 16px 22px;border-top:1px solid var(--line);}

  /* ============ 响应式 ============ */
  @media(max-width:1023px){
    .section{padding:72px 0;}
    .topbar-inner{height:60px;gap:12px;}
    .search-box{display:none;}
    .top-phone{display:none;}
    .hamburger{display:inline-flex;}
    .overview-grid{grid-template-columns:repeat(2,1fr);gap:20px;padding:26px 0;}
    .scene-grid{grid-template-columns:repeat(2,1fr);}
    .flow-grid{grid-template-columns:repeat(2,1fr);}
    .cta-inner{grid-template-columns:1fr;gap:32px;padding:60px 0;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .card-wide{grid-template-columns:minmax(0,220px) minmax(0,1fr);}
  }
  @media(max-width:767px){
    .section{padding:56px 0;}
    .section-head{margin-bottom:26px;}
    .cat-banner .banner-inner{min-height:auto;padding:34px 0 38px;}
    .brand-chip{height:26px;font-size:11.5px;}
    .cat-banner .banner-sub{font-size:15px;}
    .banner-meta span{height:28px;font-size:12px;padding:0 12px;}
    .overview-grid{grid-template-columns:1fr 1fr;gap:16px;}
    .scene-grid{grid-template-columns:1fr;}
    .flow-grid{grid-template-columns:1fr;}
    .faq-grid{grid-template-columns:1fr;}
    .faq-card p{padding-left:0;}
    .card-wide{grid-template-columns:1fr;}
    .card-wide .thumb{min-height:200px;}
    .card-wide .card-body{padding:20px;}
    .btn{width:100%;max-width:320px;}
    .btn-sm{width:auto;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-bottom{margin-top:32px;}
    .cta-inner{padding:52px 0;}
  }
  @media(max-width:520px){
    .overview-grid{grid-template-columns:1fr;}
    .card-body{padding:18px;}
    .card-lg h3{font-size:19px;}
  }

/* roulang page: category1 */
:root{
    --brand:#0B4C48;
    --brand-dark:#08332F;
    --brand-light:#12706A;
    --brand-soft:#E3F0EE;
    --accent:#E4762F;
    --accent-dark:#C8601F;
    --accent-soft:#FDEEE3;
    --ink:#10201F;
    --text:#33413F;
    --muted:#6B7C7A;
    --line:#E4EAE8;
    --page:#F5F8F7;
    --card:#FFFFFF;
    --ok:#2F9E6B;
    --warn:#D9822B;
    --err:#D0503F;
    --r-card:14px;
    --r-img:12px;
    --r-btn:10px;
    --sh-sm:0 1px 2px rgba(16,32,31,.06);
    --sh-md:0 6px 18px rgba(16,32,31,.08);
    --sh-lg:0 18px 40px rgba(16,32,31,.12);
    --header-h:68px;
    --tabs-h:48px;
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  html body{
    margin:0;
    padding:0;
    font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--text);
    background:var(--page);
    letter-spacing:0;
  }
  img{display:block;max-width:100%;height:auto}
  a{color:var(--brand);text-decoration:none;transition:color 220ms var(--ease)}
  a:hover{color:var(--brand-light)}
  button{font-family:inherit;cursor:pointer}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
  @media (min-width:1440px){.container{max-width:1280px}}
  @media (max-width:767px){.container{padding:0 16px}}

  h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.3}
  .h1{font-size:clamp(28px,4.2vw,44px);font-weight:800;text-wrap:balance}
  .h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;text-wrap:balance}
  .h3{font-size:19px;font-weight:600;line-height:1.45}
  .h4{font-size:16.5px;font-weight:600;line-height:1.5}
  .lead{font-size:16px;line-height:1.85;color:var(--text)}
  .muted{color:var(--muted)}
  .small{font-size:14px}
  .tiny{font-size:12px;letter-spacing:.08em}
  .num{font-variant-numeric:tabular-nums}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 24px;border-radius:var(--r-btn);border:0;
    font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
    transition:all 220ms var(--ease);text-decoration:none;
  }
  .btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-sm)}
  .btn-primary:hover{background:var(--accent-dark);color:#fff;box-shadow:var(--sh-lg);transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(1px);box-shadow:none}
  .btn-outline{background:transparent;border:1.5px solid var(--brand);color:var(--brand)}
  .btn-outline:hover{background:var(--brand-soft);color:var(--brand)}
  .btn-outline:active{transform:translateY(1px)}
  .btn-ghost{background:transparent;color:var(--brand);padding:0 6px;height:auto;font-weight:600}
  .btn-ghost:hover{color:var(--brand-light);text-decoration:underline;text-underline-offset:4px}
  .btn-light{background:#fff;color:var(--brand-dark)}
  .btn-light:hover{background:#EFEFEF;color:var(--brand-dark);box-shadow:var(--sh-lg);transform:translateY(-1px)}
  .btn-hollow{background:transparent;border:1.5px solid rgba(255,255,255,.7);color:#fff}
  .btn-hollow:hover{background:rgba(255,255,255,.12);color:#fff}
  .btn-sm{height:40px;padding:0 18px;font-size:14px}
  .btn-block{width:100%}
  .btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

  /* ---------- 顶部双层导航 ---------- */
  .site-header{position:sticky;top:0;z-index:60;background:#fff}
  .header-main{border-bottom:1px solid var(--line);background:#fff}
  .header-inner{display:flex;align-items:center;gap:20px;height:var(--header-h)}
  .logo{display:inline-flex;align-items:center;gap:10px;color:var(--brand);flex:0 0 auto}
  .logo:hover{color:var(--brand)}
  .logo-mark{width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;color:var(--brand)}
  .logo-mark svg{width:28px;height:28px}
  .logo-text{font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--brand)}
  .search-box{position:relative;flex:0 0 240px;transition:flex-basis 260ms var(--ease)}
  .search-box:focus-within{flex-basis:320px}
  .search-box input{
    width:100%;height:40px;border-radius:999px;border:1px solid transparent;
    background:var(--page);padding:0 18px 0 40px;font-size:14px;color:var(--ink);
    transition:all 220ms var(--ease);
  }
  .search-box input::placeholder{color:var(--muted)}
  .search-box input:focus{outline:none;border-color:var(--brand);border-width:1.5px;background:#fff;box-shadow:var(--sh-sm)}
  .search-box svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--muted)}
  .header-actions{margin-left:auto;display:flex;align-items:center;gap:16px}
  .header-phone{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums}
  .hamburger{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;color:var(--brand)}
  .hamburger:hover{background:var(--brand-soft)}

  .nav-tabs{background:#fff;border-bottom:1px solid var(--line);transition:box-shadow 220ms var(--ease)}
  .site-header.is-stuck .nav-tabs{box-shadow:var(--sh-md)}
  .nav-tabs-inner{
    display:flex;align-items:center;gap:8px;height:var(--tabs-h);
    overflow-x:auto;scroll-snap-type:x proximity;-ms-overflow-style:none;scrollbar-width:none;
  }
  .nav-tabs-inner::-webkit-scrollbar{display:none}
  .tab{
    flex:0 0 auto;scroll-snap-align:start;padding:7px 16px;border-radius:999px;
    font-size:14px;color:var(--muted);white-space:nowrap;transition:all 200ms var(--ease);
  }
  .tab:hover{background:var(--brand-soft);color:var(--brand)}
  .tab.active{background:var(--brand);color:#fff;font-weight:600}
  .tab.active:hover{background:var(--brand-dark);color:#fff}

  /* ---------- 移动端抽屉 ---------- */
  .drawer{
    position:fixed;inset:0;z-index:90;background:#fff;display:flex;flex-direction:column;
    transform:translateX(102%);transition:transform 280ms var(--ease);
  }
  .drawer.open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;height:60px;padding:0 16px;border-bottom:1px solid var(--line)}
  .drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;font-size:20px;color:var(--brand);line-height:1}
  .drawer-body{padding:12px 16px;flex:1;overflow-y:auto}
  .drawer-body .search-box{flex:1 1 auto;margin-bottom:14px}
  .drawer-link{display:flex;align-items:center;height:56px;font-size:16px;color:var(--text);border-bottom:1px solid var(--line)}
  .drawer-link.active{color:var(--brand);font-weight:700}
  .drawer-foot{padding:16px;border-top:1px solid var(--line)}

  /* ---------- 分类页首横幅 ---------- */
  .page-hero{
    position:relative;color:#fff;min-height:250px;display:flex;align-items:center;
    background-image:linear-gradient(90deg,rgba(11,76,72,.78) 0%,rgba(11,76,72,.60) 55%,rgba(8,51,47,.58) 100%),url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;scroll-margin-top:116px;
  }
  .page-hero-inner{padding:54px 0}
  .breadcrumb{font-size:13px;color:rgba(255,255,255,.78);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
  .breadcrumb a{color:rgba(255,255,255,.86)}
  .breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
  .breadcrumb .sep{opacity:.6}
  .breadcrumb .current{color:#fff}
  .page-hero h1{color:#fff;font-size:clamp(26px,3.4vw,38px);font-weight:800;margin-top:14px}
  .page-hero .hero-sub{color:#D7E4E1;font-size:clamp(15px,1.4vw,17px);max-width:46em;margin-top:12px}

  /* ---------- 筛选 pill 条 ---------- */
  .filter-bar{background:#fff;border-bottom:1px solid var(--line);position:relative}
  .filter-inner{display:flex;align-items:center;gap:10px;padding:14px 0;overflow-x:auto;-ms-overflow-style:none;scrollbar-width:none}
  .filter-inner::-webkit-scrollbar{display:none}
  .filter-label{font-size:13px;color:var(--muted);flex:0 0 auto;letter-spacing:.08em;margin-right:4px}
  .pill{
    flex:0 0 auto;padding:8px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;
    font-size:14px;color:var(--text);transition:all 200ms var(--ease);
  }
  .pill:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
  .pill.active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}

  /* ---------- 板块通用 ---------- */
  .section{padding:96px 0}
  .section-soft{background:#fff}
  .section-head{margin-bottom:36px;max-width:820px}
  .section-head .h2{margin-bottom:12px}
  .section-head p{color:var(--muted);font-size:15.5px}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;color:var(--brand);font-weight:600;margin-bottom:12px}
  .eyebrow::before{content:"";width:18px;height:2px;background:var(--accent);border-radius:2px}

  /* ---------- 资讯卡 + 侧栏 ---------- */
  .news-layout{display:grid;grid-template-columns:8fr 4fr;gap:24px;align-items:start}
  .news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
  .news-card{
    background:var(--card);border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden;
    transition:transform 220ms var(--ease),box-shadow 220ms var(--ease);display:flex;flex-direction:column;
  }
  .news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-md)}
  .news-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft)}
  .news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 260ms var(--ease)}
  .news-card:hover .news-thumb img{transform:scale(1.04)}
  .news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
  .news-body .h3{font-size:18px}
  .news-card:hover .news-body .h3{color:var(--brand)}
  .news-excerpt{font-size:14.5px;line-height:1.7;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-top:auto;font-variant-numeric:tabular-nums}
  .badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;font-size:12px;letter-spacing:.08em;background:var(--brand-soft);color:var(--brand);font-weight:600}
  .badge-accent{background:var(--accent-soft);color:var(--accent-dark)}
  .arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
  .arrow-link svg{width:14px;height:14px;transition:transform 220ms var(--ease)}
  .news-card:hover .arrow-link svg{transform:translateX(4px)}

  .sidebar{display:flex;flex-direction:column;gap:20px;position:sticky;top:132px}
  .side-card{background:var(--card);border-radius:var(--r-card);box-shadow:var(--sh-sm);padding:22px}
  .side-card .h4{margin-bottom:10px}
  .side-card p{font-size:14.5px;line-height:1.8;color:var(--muted)}
  .side-links{margin-top:6px}
  .side-links a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 0;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--text)}
  .side-links a:last-child{border-bottom:0}
  .side-links a:hover{color:var(--brand)}
  .side-links a span.arw{transition:transform 220ms var(--ease);color:var(--brand)}
  .side-links a:hover span.arw{transform:translateX(4px)}
  .side-card-accent{background:var(--brand-soft);box-shadow:none}
  .side-card-accent .h4{color:var(--brand-dark)}
  .side-card-accent p{color:var(--brand-dark);opacity:.85}

  /* ---------- 内容方向卡 ---------- */
  .dir-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:24px}
  .dir-card{background:var(--card);border-radius:var(--r-card);box-shadow:var(--sh-sm);padding:26px;transition:transform 220ms var(--ease),box-shadow 220ms var(--ease)}
  .dir-card:hover{transform:translateY(-3px);box-shadow:var(--sh-md)}
  .dir-icon{width:46px;height:46px;border-radius:12px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
  .dir-icon svg{width:22px;height:22px}
  .dir-card .h3{margin-bottom:10px}
  .dir-card p{font-size:14.5px;line-height:1.8;color:var(--muted);margin:0 0 14px}
  .dir-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
  .dir-list li{position:relative;padding-left:16px;font-size:14px;color:var(--text)}
  .dir-list li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--brand)}

  /* ---------- 时间线 ---------- */
  .timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
  .tl-item{background:var(--card);border-radius:var(--r-card);box-shadow:var(--sh-sm);padding:24px;position:relative}
  .tl-no{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--accent);margin-bottom:14px;display:block}
  .tl-item .h4{margin-bottom:8px}
  .tl-item p{font-size:14px;line-height:1.78;color:var(--muted);margin:0}

  /* ---------- 保障条 ---------- */
  .guarantee{background:var(--brand-soft)}
  .guarantee-inner{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
  .gz-item{display:flex;align-items:center;gap:12px;padding:26px 20px;border-right:1px solid rgba(11,76,72,.12)}
  .gz-item:last-child{border-right:0}
  .gz-item svg{width:26px;height:26px;color:var(--brand);flex:0 0 auto}
  .gz-item strong{display:block;font-size:14.5px;color:var(--brand-dark);font-weight:600}
  .gz-item span{display:block;font-size:12.5px;color:var(--muted)}

  /* ---------- 转化 CTA ---------- */
  .cta-band{
    background-color:var(--brand-dark);color:#fff;position:relative;overflow:hidden;
    background-image:linear-gradient(135deg,rgba(11,76,72,.92),rgba(8,51,47,.96)),url('/assets/images/backpic/back-2.webp');
    background-size:cover;background-position:center;
  }
  .cta-band::after{
    content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
    background-image:repeating-linear-gradient(45deg,#fff 0 1px,transparent 1px 12px);
  }
  .cta-wrap{position:relative;z-index:1;display:grid;grid-template-columns:7fr 5fr;gap:48px;padding:76px 0;align-items:start}
  .cta-band h2{color:#fff}
  .cta-band p.cta-desc{color:#B9C9C6;font-size:15.5px;margin-top:14px;max-width:40em}
  .cta-points{list-style:none;margin:26px 0 0;padding:0;display:flex;flex-direction:column;gap:12px}
  .cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:#E8F0EE}
  .cta-points svg{width:18px;height:18px;color:var(--accent);flex:0 0 auto;margin-top:3px}
  .cta-form{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:var(--r-card);padding:24px}
  .cta-form .h4{color:#fff;margin-bottom:16px}
  .field{margin-bottom:14px}
  .field label{display:block;font-size:12px;letter-spacing:.08em;color:#B9C9C6;margin-bottom:6px}
  .field input,.field textarea{
    width:100%;background:#fff;border:1px solid var(--line);border-radius:10px;
    color:var(--ink);font-size:15px;padding:0 14px;transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
  }
  .field input{height:46px}
  .field textarea{height:92px;padding:12px 14px;line-height:1.7;resize:vertical}
  .field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);border-width:1.5px;box-shadow:var(--sh-sm)}
  .field .err-text{display:none;font-size:12px;color:var(--err);margin-top:6px}
  .field.has-error input,.field.has-error textarea{border-color:var(--err)}
  .field.has-error .err-text{display:block}
  .form-note{font-size:12.5px;color:#B9C9C6;margin-top:12px;text-align:center}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--brand-dark);color:#B9C9C6;padding:64px 0 0}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
  .footer-brand .logo{color:#fff;margin-bottom:18px}
  .footer-brand .logo-text{color:#fff}
  .footer-brand .logo-mark{color:#fff}
  .footer-desc{font-size:14px;line-height:1.85;color:#B9C9C6;max-width:36em}
  .footer-contact{display:flex;flex-direction:column;gap:6px;margin-top:18px;font-size:14px;color:#D7E4E1;font-variant-numeric:tabular-nums}
  .footer-col h4{color:#fff;font-size:14px;font-weight:600;letter-spacing:.04em;margin-bottom:16px}
  .footer-col a{display:block;font-size:14px;color:#B9C9C6;padding:5px 0}
  .footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#93A5A2}
  .footer-bottom a{color:#D7E4E1}
  .footer-bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}

  /* ---------- 断点 ---------- */
  @media (max-width:1279px){
    .cta-wrap{gap:36px}
  }
  @media (max-width:1023px){
    .section{padding:72px 0}
    .news-layout{grid-template-columns:1fr}
    .sidebar{position:static;flex-direction:row;flex-wrap:wrap}
    .side-card{flex:1 1 300px}
    .timeline{grid-template-columns:repeat(2,minmax(0,1fr))}
    .cta-wrap{grid-template-columns:1fr;padding:60px 0}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  }
  @media (max-width:900px){
    .search-box{display:none}
    .header-phone{display:none}
    .hamburger{display:inline-flex}
    .header-actions .btn-primary{height:40px;padding:0 16px;font-size:14px}
  }
  @media (max-width:767px){
    :root{--header-h:56px}
    .section{padding:56px 0}
    .page-hero{min-height:172px}
    .page-hero-inner{padding:32px 0}
    .news-grid{grid-template-columns:1fr}
    .timeline{grid-template-columns:1fr}
    .guarantee-inner{grid-template-columns:repeat(2,minmax(0,1fr))}
    .gz-item{border-right:0;border-bottom:1px solid rgba(11,76,72,.12);padding:18px 14px}
    .gz-item:nth-child(odd){border-right:1px solid rgba(11,76,72,.12)}
    .gz-item:nth-last-child(-n+2){border-bottom:0}
    .sidebar{flex-direction:column}
    .side-card{flex:1 1 auto}
    .btn{width:100%;max-width:320px}
    .header-actions .btn-primary{width:auto;max-width:none}
    .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
    .footer-bottom{flex-direction:column;gap:8px}
  }
  @media (max-width:520px){
    .header-inner{gap:12px}
    .logo-text{font-size:16px}
    .filter-label{display:none}
    .cta-form{padding:18px}
  }

/* roulang page: category3 */
:root{
  --brand:#0B4C48;
  --brand-dark:#08332F;
  --brand-light:#12706A;
  --brand-soft:#E3F0EE;
  --accent:#E4762F;
  --accent-dark:#C8601F;
  --accent-soft:#FDEEE3;
  --ink:#10201F;
  --text:#33413F;
  --muted:#6B7C7A;
  --line:#E4EAE8;
  --page:#F5F8F7;
  --card:#FFFFFF;
  --ok:#2F9E6B;
  --warn:#D9822B;
  --err:#D0503F;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-sm:0 1px 2px rgba(16,32,31,.06);
  --sh-md:0 6px 18px rgba(16,32,31,.08);
  --sh-lg:0 18px 40px rgba(16,32,31,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:116px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.3;}
h1{font-weight:800;}
h2{font-weight:700;}
h3{font-size:18px;font-weight:600;}
h4{font-size:16px;font-weight:600;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
img{display:block;max-width:100%;height:auto;border-radius:var(--r-img);}
ul,ol{margin:0;padding:0;list-style:none;}
body a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
body a:hover{color:var(--brand-light);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
[id]{scroll-margin-top:calc(var(--nav-h) + 16px);}
input,textarea,button,select{font-family:inherit;font-size:inherit;}

.container{width:100%;max-width:1200px !important;margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1280px !important;}}
@media (max-width:768px){.container{padding:0 16px;}}

.section{padding:72px 0;}
.section-tight{padding:48px 0;}
@media (max-width:1024px){.section{padding:56px 0;}.section-tight{padding:40px 0;}}
@media (max-width:768px){.section{padding:44px 0;}.section-tight{padding:32px 0;}}
.section-alt{background:#fff;}

.section-head{margin-bottom:32px;max-width:52em;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);}
.section-head p{margin-top:10px;color:var(--muted);font-size:15px;line-height:1.85;}

/* ============ 顶部双层导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-stuck{box-shadow:var(--sh-md);}
.nav-top{background:#fff;}
.nav-top-inner{display:flex;align-items:center;gap:20px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--brand);font-size:18px;font-weight:800;letter-spacing:.01em;flex:none;}
.logo:hover{color:var(--brand-light);}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:10px;background:var(--brand-soft);color:var(--brand);}
.logo-mark svg{width:22px;height:22px;}
.logo-text{white-space:nowrap;}
.nav-search{position:relative;flex:1 1 auto;max-width:240px;transition:max-width .25s var(--ease);}
.nav-search:focus-within{max-width:320px;}
.nav-search svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--muted);pointer-events:none;}
.nav-search input{
  width:100%;height:40px;border-radius:999px;border:1.5px solid transparent;
  background:var(--page);padding:0 16px 0 38px;color:var(--ink);
  transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search input::placeholder{color:var(--muted);}
.nav-search input:focus{outline:none;background:#fff;border-color:var(--brand);box-shadow:var(--sh-sm);}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto;flex:none;}
.nav-phone{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);font-variant-numeric:tabular-nums;}
.nav-phone svg{width:16px;height:16px;}
.nav-burger{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--brand);align-items:center;justify-content:center;cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.nav-burger:hover{background:var(--brand-soft);border-color:var(--brand-soft);}
.nav-burger svg{width:20px;height:20px;}

.nav-tabs{background:#fff;border-top:1px solid var(--line);position:relative;}
.nav-tabs-inner{
  display:flex;align-items:center;gap:8px;height:48px;
  overflow-x:auto;scroll-snap-type:x proximity;-ms-overflow-style:none;scrollbar-width:none;
}
.nav-tabs-inner::-webkit-scrollbar{display:none;}
.tab{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  font-size:14px;color:var(--muted);white-space:nowrap;scroll-snap-align:start;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.tab:hover{background:var(--brand-soft);color:var(--brand);}
.tab.active{background:var(--brand);color:#fff;font-weight:600;}
.tab.active:hover{background:var(--brand-light);color:#fff;}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;background:#fff;z-index:120;display:flex;flex-direction:column;
  transform:translateX(100%);opacity:0;visibility:hidden;
  transition:transform .28s var(--ease),opacity .28s var(--ease),visibility .28s var(--ease);
}
.drawer.open{transform:translateX(0);opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--line);}
.drawer-close{width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--brand);cursor:pointer;display:flex;align-items:center;justify-content:center;}
.drawer-close svg{width:18px;height:18px;}
.drawer-body{padding:16px;overflow-y:auto;flex:1;}
.drawer-search{margin-bottom:14px;}
.drawer-search input{width:100%;height:44px;border-radius:999px;border:1.5px solid var(--line);padding:0 18px;background:var(--page);}
.drawer-search input:focus{outline:none;border-color:var(--brand);background:#fff;}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;height:56px;font-size:17px;color:var(--text);border-bottom:1px solid var(--line);}
.drawer-nav a.active{color:var(--brand);font-weight:700;}
.drawer-foot{padding:16px;border-top:1px solid var(--line);}
.drawer-foot .btn{width:100%;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1.5px solid transparent;
  cursor:pointer;text-align:center;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-sm);}
.btn-primary:hover{background:var(--accent-dark);color:#fff;box-shadow:var(--sh-lg);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-outline{border-color:var(--brand);color:var(--brand);background:transparent;}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand);}
.btn-outline:active{transform:translateY(1px);}
.btn-light{border-color:rgba(255,255,255,.55);color:#fff;background:transparent;}
.btn-light:hover{background:rgba(255,255,255,.12);color:#fff;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
  background-image:linear-gradient(currentColor,currentColor);
  background-repeat:no-repeat;background-size:0 1px;background-position:0 100%;
  transition:background-size .25s var(--ease),color .2s var(--ease);
}
.link-arrow:hover{color:var(--brand-light);background-size:100% 1px;}
.link-arrow svg{width:14px;height:14px;transition:transform .22s var(--ease);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ============ 页首横幅 ============ */
.page-hero{
  position:relative;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  color:#fff;
  padding:52px 0 48px;
  min-height:236px;
  display:flex;align-items:center;
}
.page-hero::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(8,51,47,.88) 0%,rgba(11,76,72,.66) 62%,rgba(11,76,72,.58) 100%);
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{font-size:13px;color:rgba(255,255,255,.75);display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.breadcrumb a{color:rgba(255,255,255,.9);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}
.breadcrumb .sep{color:rgba(255,255,255,.5);}
.breadcrumb .current{color:#fff;font-weight:600;}
.page-hero h1{font-size:clamp(28px,4.2vw,44px);color:#fff;margin:14px 0 12px;text-wrap:balance;}
.hero-sub{max-width:38em;font-size:16px;line-height:1.8;color:rgba(255,255,255,.9);margin-bottom:18px;}
.hero-pills{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:12px;color:rgba(255,255,255,.86);letter-spacing:.04em;}
.hero-pills span{display:inline-flex;align-items:center;gap:8px;}
.hero-pills span::before{content:'';width:5px;height:5px;border-radius:50%;background:var(--accent);}
@media (max-width:768px){
  .page-hero{padding:36px 0 32px;min-height:160px;}
  .hero-sub{font-size:15px;}
}

/* 快捷入口 pill 条 */
.quick-bar{background:#fff;border-bottom:1px solid var(--line);}
.quick-inner{
  display:flex;align-items:center;gap:10px;height:64px;overflow-x:auto;
  scroll-snap-type:x proximity;-ms-overflow-style:none;scrollbar-width:none;
}
.quick-inner::-webkit-scrollbar{display:none;}
.quick-label{font-size:13px;color:var(--muted);white-space:nowrap;flex:none;}
.pill{
  display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 16px;border-radius:999px;
  background:var(--page);color:var(--text);font-size:14px;white-space:nowrap;scroll-snap-align:start;
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.pill:hover{background:var(--brand-soft);color:var(--brand);border-color:var(--brand-soft);}

/* ============ 帮助页主区：左目录 + 右 FAQ ============ */
.help-layout{display:grid;grid-template-columns:300px minmax(0,1fr);gap:32px;align-items:start;}
.help-toc{position:sticky;top:calc(var(--nav-h) + 20px);display:flex;flex-direction:column;gap:20px;}
.toc-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-sm);
}
.toc-img{width:100%;aspect-ratio:3/2;object-fit:cover;margin-bottom:16px;}
.toc-title{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:12px;letter-spacing:.02em;}
.toc-nav{display:flex;flex-direction:column;gap:2px;}
.toc-link{
  display:block;padding:9px 12px;border-radius:10px;font-size:14px;color:var(--text);
  border-left:3px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.toc-link:hover{background:var(--page);color:var(--brand);}
.toc-link.active{background:var(--brand-soft);color:var(--brand);font-weight:600;border-left-color:var(--brand);}
.toc-text{font-size:13px;line-height:1.8;color:var(--muted);margin-bottom:14px;}

.faq-col{display:flex;flex-direction:column;gap:24px;}
.faq-group{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:0 22px 10px;box-shadow:var(--sh-sm);
}
.faq-group-title{
  display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;
  color:var(--ink);padding:22px 0 14px;
}
.faq-group-title::before{content:'';width:4px;height:18px;border-radius:2px;background:var(--brand);flex:none;}
.faq-item{
  border-top:1px solid var(--line);
  border-left:3px solid transparent;
  padding-left:14px;
  transition:border-color .2s var(--ease);
}
.faq-item[open]{border-left-color:var(--brand);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:12px 0;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item[open] summary{color:var(--brand);}
.faq-icon{position:relative;flex:none;width:20px;height:20px;color:var(--brand);transition:transform .2s var(--ease);}
.faq-icon::before,.faq-icon::after{content:'';position:absolute;background:currentColor;border-radius:2px;}
.faq-icon::before{left:3px;top:9px;width:14px;height:2px;}
.faq-icon::after{left:9px;top:3px;width:2px;height:14px;transition:opacity .2s var(--ease);}
.faq-item[open] .faq-icon{transform:rotate(180deg);}
.faq-item[open] .faq-icon::after{opacity:0;}
.faq-answer{padding:0 26px 20px 0;font-size:15px;line-height:1.85;color:var(--text);}
.faq-answer p{margin-bottom:.8em;}
.faq-answer strong{color:var(--ink);}

.inline-cta{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  background:var(--brand-soft);border-radius:12px;padding:16px 20px;margin:14px 0 18px;
}
.inline-cta p{margin:0;font-size:14px;line-height:1.7;color:#1E3A38;max-width:44em;}

/* ============ 自助排查三步 ============ */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.step{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 22px;box-shadow:var(--sh-sm);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:#D6E4E1;}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;
  background:var(--brand-soft);color:var(--brand);font-size:16px;font-weight:800;
  font-variant-numeric:tabular-nums;margin-bottom:16px;
}
.step h3{margin-bottom:8px;}
.step p{font-size:14px;color:var(--muted);line-height:1.8;margin:0;}

/* ============ 保障条 ============ */
.guarantee{background:var(--brand-soft);}
.guarantee-inner{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));}
.guarantee-item{
  display:flex;align-items:flex-start;gap:12px;padding:22px 20px;
  border-left:1px solid rgba(11,76,72,.12);
}
.guarantee-item:first-child{border-left:none;padding-left:0;}
.guarantee-item svg{width:28px;height:28px;color:var(--brand);flex:none;}
.guarantee-item h4{font-size:14px;margin-bottom:4px;color:var(--ink);}
.guarantee-item p{font-size:12px;color:#4A5F5C;margin:0;line-height:1.7;}

/* ============ 深色 CTA ============ */
.cta-band{
  background:var(--brand-dark);color:#fff;border-radius:20px;overflow:hidden;position:relative;
  padding:48px;
}
.cta-band::before{
  content:'';position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:44px 44px;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:start;}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:14px;}
.cta-band p{color:#B9C9C6;font-size:15px;line-height:1.85;}
.cta-list{margin:20px 0 24px;display:flex;flex-direction:column;gap:10px;}
.cta-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:#D7E3E1;}
.cta-list svg{width:18px;height:18px;color:var(--accent);flex:none;margin-top:3px;}
.cta-contact{font-size:13px;color:#B9C9C6;display:flex;flex-direction:column;gap:6px;}
.cta-contact strong{color:#fff;font-size:18px;font-variant-numeric:tabular-nums;letter-spacing:.01em;}

.cta-form{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:24px;}
.cta-form h3{color:#fff;font-size:16px;margin-bottom:16px;}
.form-field{margin-bottom:14px;}
.form-field label{display:block;font-size:12px;color:#B9C9C6;margin-bottom:6px;letter-spacing:.04em;}
.form-field input,.form-field textarea{
  width:100%;background:#fff;border:1px solid transparent;border-radius:10px;
  padding:12px 14px;color:var(--ink);font-size:14px;line-height:1.5;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-field input{height:46px;padding:0 14px;}
.form-field textarea{min-height:88px;resize:vertical;}
.form-field input:focus,.form-field textarea:focus{outline:none;border-color:var(--brand-light);box-shadow:0 0 0 3px rgba(18,112,106,.22);}
.form-note{font-size:12px;color:#B9C9C6;margin-top:10px;min-height:18px;}
.form-note.show{color:#8FD6BE;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-dark);color:#B9C9C6;margin-top:72px;padding:56px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .logo{color:#fff;margin-bottom:16px;}
.footer-brand .logo-mark{background:rgba(255,255,255,.12);color:#fff;}
.footer-desc{font-size:14px;line-height:1.85;color:#9FB2AF;margin-bottom:18px;max-width:36em;}
.footer-contact{display:flex;flex-direction:column;gap:6px;font-size:13px;color:#B9C9C6;}
.footer-col h4{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer-col a{display:block;font-size:14px;color:#B9C9C6;padding:5px 0;}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:#93A6A3;
}
.footer-bottom a{color:#B9C9C6;}
.footer-bottom a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .help-layout{grid-template-columns:1fr;}
  .help-toc{position:static;flex-direction:row;flex-wrap:wrap;}
  .help-toc .toc-card{flex:1 1 280px;}
  .cta-inner{grid-template-columns:1fr;gap:32px;}
  .guarantee-inner{grid-template-columns:repeat(2,minmax(0,1fr));}
  .guarantee-item:nth-child(3){border-left:none;padding-left:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .nav-search{display:none;}
  .nav-phone{display:none;}
  .nav-burger{display:flex;}
  .steps{grid-template-columns:1fr;}
}
@media (max-width:768px){
  .nav-top-inner{height:56px;gap:12px;}
  .logo-text{font-size:16px;}
  .nav-tabs-inner{height:46px;}
  .cta-band{padding:28px 20px;border-radius:16px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .faq-group{padding:0 16px 8px;}
  .faq-answer{padding-right:6px;}
  .btn-block-m{width:100%;max-width:320px;}
}
@media (max-width:520px){
  .guarantee-inner{grid-template-columns:1fr;}
  .guarantee-item{border-left:none;padding-left:0;border-top:1px solid rgba(11,76,72,.12);}
  .guarantee-item:first-child{border-top:none;}
  .inline-cta{flex-direction:column;align-items:flex-start;}
  .inline-cta .btn{width:100%;max-width:320px;}
}