/* roulang page: index */
:root{
  --c-brand:#00A87C;
  --c-brand-700:#00815F;
  --c-brand-100:#DFF5EC;
  --c-ink:#0B1210;
  --c-ink-soft:#2B3733;
  --c-muted:#63736D;
  --c-lime:#D8F24A;
  --c-bg:#F4F6F3;
  --c-surface:#FFFFFF;
  --c-line:#E2E8E3;
  --c-danger:#D9480F;
  --c-brand-light:#2ED3A3;
  --sh-1:0 1px 2px rgba(11,18,16,.05);
  --sh-2:0 10px 24px rgba(11,18,16,.08);
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-body-font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-body-color:#2B3733;
  --bs-body-bg:#F4F6F3;
  --bs-link-color:#00A87C;
  --bs-link-hover-color:#00815F;
  --bs-primary:#00A87C;
  --bs-border-color:#E2E8E3;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink-soft);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-brand);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--c-brand-700)}
h1,h2,h3,h4,h5,h6{color:var(--c-ink);font-weight:700;line-height:1.3;margin:0}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-lime);outline-offset:2px;border-radius:6px}
::selection{background:var(--c-brand-100);color:var(--c-ink)}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-ink);color:#fff;padding:10px 16px;z-index:2000;border-radius:0 0 10px 0}
.skip-link:focus{left:0;color:#fff}
.container{width:100%;max-width:1200px;margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px}
@media (min-width:1400px){.container{max-width:1280px}}
@media (max-width:767.98px){.container{padding-left:18px;padding-right:18px}}

/* ---------- 导航 ---------- */
.site-nav{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .18s var(--ease);
}
.site-nav.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--c-ink)}
.brand-mark{width:34px;height:34px;border-radius:8px;background:var(--c-brand);display:grid;place-items:center;flex:0 0 34px}
.brand-mark svg{width:20px;height:20px;display:block}
.brand-text{display:flex;align-items:center;gap:8px;font-size:16px;white-space:nowrap}
.brand-text strong{font-weight:800;color:var(--c-ink);letter-spacing:-.01em}
.brand-text .brand-div{width:1px;height:14px;background:var(--c-line);display:inline-block}
.brand-text span.brand-sub{font-weight:500;color:var(--c-muted)}
.nav-menu{display:flex;align-items:center;justify-content:center;gap:26px;flex:1 1 auto;min-width:0}
.nav-menu a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:14.5px;font-weight:500;color:var(--c-ink-soft);white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:50%;bottom:-1px;width:0;height:2px;
  background:var(--c-lime);border-radius:2px;transform:translateX(-50%);
  transition:width .18s var(--ease);
}
.nav-menu a:hover{color:var(--c-brand)}
.nav-menu a:hover::after{width:60%}
.nav-menu a.is-active{color:var(--c-brand);font-weight:700}
.nav-menu a.is-active::after{width:60%}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto}
.nav-search{position:relative;display:flex;align-items:center;width:220px;height:38px;background:#F1F4F1;border:1px solid transparent;border-radius:10px;padding:0 10px 0 34px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease)}
.nav-search:focus-within{background:#fff;border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(0,168,124,.15)}
.nav-search i.search-ico{position:absolute;left:11px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--c-muted)}
.nav-search input{width:100%;border:0;background:transparent;font-size:13.5px;color:var(--c-ink);outline:none;line-height:1.4}
.nav-search input::placeholder{color:var(--c-muted)}
.nav-search .kbd{font-size:11px;color:var(--c-muted);background:#fff;border:1px solid var(--c-line);border-radius:5px;padding:1px 5px;line-height:1.5;white-space:nowrap}
.icon-btn{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;flex:0 0 38px;
  color:var(--c-ink-soft);background:#fff;border:1px solid var(--c-line);
  transition:color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.icon-btn:hover{color:var(--c-brand);border-color:var(--c-brand)}
.btn-nav-cta{
  display:inline-flex;align-items:center;justify-content:center;height:38px;padding:0 18px;
  border-radius:10px;background:var(--c-brand);color:#fff;font-size:14px;font-weight:600;
  border:0;white-space:nowrap;
  transition:background .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-nav-cta:hover{background:var(--c-brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.nav-burger{display:none;width:38px;height:38px;border-radius:10px;background:#fff;border:1px solid var(--c-line);color:var(--c-ink);align-items:center;justify-content:center}
.nav-burger:hover{color:var(--c-brand);border-color:var(--c-brand)}

/* 移动抽屉 */
.mobile-drawer{width:320px;max-width:86vw;background:#fff}
.mobile-drawer .offcanvas-header{border-bottom:1px solid var(--c-line);padding:16px 20px}
.mobile-drawer .drawer-brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--c-ink)}
.mobile-drawer .offcanvas-body{padding:12px 0 0;display:flex;flex-direction:column}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 20px;font-size:16px;color:var(--c-ink-soft);
  border-bottom:1px solid var(--c-line);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--c-brand);background:var(--c-brand-100)}
.drawer-nav a i{font-size:12px;color:var(--c-muted)}
.drawer-foot{margin-top:auto;padding:16px 20px 24px;border-top:1px solid var(--c-line)}
.drawer-foot .btn-brand{width:100%}

/* ---------- 按钮 ---------- */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:0;
  background:var(--c-brand);color:#fff;font-size:15px;font-weight:600;line-height:1.2;
  transition:background .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-brand:hover{background:var(--c-brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-brand:active{transform:translateY(0);box-shadow:none}
.btn-brand:disabled,.btn-brand.disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  background:#fff;color:var(--c-ink);border:1px solid var(--c-line);
  font-size:15px;font-weight:600;line-height:1.2;
  transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease),transform .18s var(--ease);
}
.btn-ghost:hover{border-color:var(--c-brand);color:var(--c-brand);background:var(--c-brand-100);transform:translateY(-1px)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--c-brand);
  background:none;border:0;padding:0;
}
.btn-text i{transition:transform .18s var(--ease)}
.btn-text:hover{color:var(--c-brand-700);text-decoration:underline;text-underline-offset:4px}
.btn-text:hover i{transform:translateX(4px)}
.btn-lime{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:0;
  background:var(--c-brand-light);color:#05201A;font-size:15px;font-weight:700;line-height:1.2;
  transition:background .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-lime:hover{background:#4ae0b5;color:#05201A;transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,0,0,.28)}
.btn-link-dark{color:#C9D6D1;font-size:14.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.btn-link-dark:hover{color:var(--c-lime)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-tight{padding-top:56px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-title{font-size:clamp(24px,2.6vw,34px);font-weight:700;letter-spacing:-.01em;line-height:1.3}
.section-sub{font-size:14.5px;color:var(--c-muted);margin:10px 0 0;max-width:640px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
  color:var(--c-brand-700);background:var(--c-brand-100);
  padding:5px 12px;border-radius:999px;
}
.badge-lime{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--c-lime);color:var(--c-ink);
  font-size:12.5px;font-weight:700;padding:5px 12px;border-radius:999px;
}
.hairline{height:1px;background:var(--c-line);border:0;margin:0}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,#EEF7F2 100%);
  padding-top:64px;
}
.hero-deco{position:absolute;right:-80px;top:-60px;width:620px;height:620px;opacity:.12;pointer-events:none}
.hero-deco-2{position:absolute;left:-140px;bottom:40px;width:420px;height:420px;opacity:.08;pointer-events:none}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;align-items:center;padding-bottom:56px}
.hero-h1{font-size:clamp(32px,4.2vw,52px);font-weight:800;line-height:1.22;letter-spacing:-.02em;margin:18px 0 0}
.hero-sub{font-size:16.5px;color:var(--c-ink-soft);margin:18px 0 0;max-width:600px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-visual{position:relative}
.hero-visual-frame{position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--sh-2)}
.hero-visual-frame img{width:100%;height:440px;object-fit:cover}
.hero-visual-frame::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(0,168,124,.20),rgba(11,18,16,.10) 70%,rgba(11,18,16,.30))}
.hero-float{
  position:absolute;left:-18px;bottom:24px;z-index:3;
  display:flex;align-items:center;gap:12px;
  width:236px;padding:12px;background:#fff;border-radius:14px;box-shadow:var(--sh-2);
}
.hero-float img{width:56px;height:56px;border-radius:10px;object-fit:cover;flex:0 0 56px}
.hero-float .hf-num{font-family:"Barlow Condensed",Inter,sans-serif;font-size:24px;font-weight:800;color:var(--c-ink);line-height:1.1}
.hero-float .hf-label{font-size:12.5px;color:var(--c-muted);line-height:1.4}
.trust-bar{
  display:flex;flex-wrap:wrap;margin-top:38px;padding-top:24px;border-top:1px solid var(--c-line);
}
.trust-item{flex:1 1 0;min-width:132px;padding:0 22px;border-left:1px solid var(--c-line)}
.trust-item:first-child{border-left:0;padding-left:0}
.trust-num{font-family:"Barlow Condensed",Inter,sans-serif;font-size:28px;font-weight:800;color:var(--c-ink);line-height:1.1}
.trust-num em{font-style:normal;font-family:inherit;font-size:14px;color:var(--c-brand);margin-left:2px;font-weight:700}
.trust-label{font-size:12.5px;color:var(--c-muted);margin-top:4px;line-height:1.5}
.hero-curve{position:relative;height:72px;background:var(--c-bg);border-radius:50% 50% 0 0/100% 100% 0 0;margin-top:8px}

/* ---------- 能力条 ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.cap-item{padding:34px 26px;border-left:1px solid var(--c-line)}
.cap-item:first-child{border-left:0;padding-left:0}
.cap-item:last-child{padding-right:0}
.cap-ico{
  width:44px;height:44px;border-radius:12px;background:var(--c-brand-100);color:var(--c-brand-700);
  display:grid;place-items:center;font-size:18px;margin-bottom:16px;
}
.cap-item h3{font-size:17px;font-weight:700;margin-bottom:8px}
.cap-item p{font-size:14px;color:var(--c-muted);margin:0}

/* ---------- 三步 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
.step{position:relative;padding:4px 0}
.step:nth-child(2){transform:translateY(16px)}
.step-num{font-family:"Barlow Condensed",Inter,sans-serif;font-size:68px;font-weight:800;line-height:.95;color:var(--c-brand);opacity:.18}
.step-dash{display:block;width:84px;border-top:2px dashed var(--c-line);margin:12px 0 18px}
.step h3{font-size:20px;font-weight:700;margin-bottom:10px}
.step p{font-size:14.5px;color:var(--c-muted);margin:0 0 14px}

/* ---------- 案例拼贴 ---------- */
.case-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px}
.case-col{display:flex;flex-direction:column;gap:24px}
.case-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;height:100%;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.case-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(0,168,124,.28)}
.case-thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.case-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.case-card:hover .case-thumb img{transform:scale(1.03)}
.case-body{padding:24px;display:flex;flex-direction:column;flex:1}
.tag{
  display:inline-flex;align-items:center;font-size:12px;font-weight:600;
  padding:4px 10px;border-radius:999px;background:var(--c-brand-100);color:var(--c-brand-700);
}
.case-card h3{font-size:19px;margin:14px 0 10px;line-height:1.45}
.case-card .case-result{font-size:14.5px;color:var(--c-ink-soft);margin:0 0 18px}
.case-card .case-result strong{color:var(--c-brand-700);font-weight:700}
.case-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line)}
.case-card.slim{flex-direction:row}
.case-card.slim .case-thumb{flex:0 0 42%;aspect-ratio:auto;min-height:180px}
.case-card.slim .case-body{padding:22px}

/* ---------- 资讯列表 ---------- */
.news-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;height:100%;display:flex;flex-direction:column;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(0,168,124,.28)}
.news-thumb{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--c-brand-100)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-badge{
  position:absolute;left:12px;top:12px;
  background:var(--c-brand-100);color:var(--c-brand-700);
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;
  box-shadow:0 1px 2px rgba(11,18,16,.06);
}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-title{font-size:18px;font-weight:700;line-height:1.45;margin:0 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a{color:var(--c-ink)}
.news-card:hover .news-title a{color:var(--c-brand)}
.news-desc{font-size:14px;color:var(--c-muted);line-height:1.7;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-muted);
}
.news-meta i{color:var(--c-brand);transition:transform .18s var(--ease)}
.news-card:hover .news-meta i{transform:translateX(4px)}
.empty-state{
  border:1px dashed var(--c-line);border-radius:var(--r-card);
  min-height:320px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;text-align:center;padding:48px 24px;background:rgba(255,255,255,.5);
}
.empty-state i{font-size:48px;color:#BFD6CD}
.empty-state h3{font-size:17px}
.empty-state p{font-size:14px;color:var(--c-muted);margin:0}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:56px;align-items:start}
.faq-aside{position:sticky;top:96px}
.faq-aside p{font-size:14.5px;color:var(--c-muted);margin:14px 0 22px}
.faq .accordion-item{border:0;border-bottom:1px solid var(--c-line);background:transparent}
.faq .accordion-item:first-child{border-top:1px solid var(--c-line)}
.faq .accordion-button{
  position:relative;background:transparent;color:var(--c-ink);
  font-size:16.5px;font-weight:600;line-height:1.5;
  padding:22px 52px 22px 16px;border-radius:0;box-shadow:none;
}
.faq .accordion-button::after{display:none}
.faq .accordion-button::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:2px;
  background:var(--c-lime);opacity:0;transition:opacity .18s var(--ease);
}
.faq .accordion-button:not(.collapsed){color:var(--c-brand);padding-left:20px}
.faq .accordion-button:not(.collapsed)::before{opacity:1}
.faq .accordion-button:hover{color:var(--c-brand)}
.faq .accordion-body{padding:0 52px 24px 20px;font-size:15px;color:var(--c-ink-soft);line-height:1.85}
.faq-icon{position:absolute;right:14px;top:50%;transform:translateY(-50%);width:16px;height:16px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-brand);border-radius:2px;transition:transform .18s var(--ease),opacity .18s var(--ease)}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.accordion-button:not(.collapsed) .faq-icon::after{transform:rotate(90deg);opacity:0}

/* ---------- CTA ---------- */
.cta-section{padding:0 0 96px}
.cta-band{
  position:relative;overflow:hidden;background:var(--c-ink);border-radius:24px;
  padding:56px;display:flex;align-items:center;justify-content:space-between;gap:40px;
}
.cta-band::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,var(--c-brand),var(--c-lime))}
.cta-deco{position:absolute;right:-60px;bottom:-120px;width:420px;height:420px;opacity:.10;pointer-events:none}
.cta-band h2{color:#fff;font-size:clamp(24px,2.6vw,34px);letter-spacing:-.01em}
.cta-band p{color:#C9D6D1;font-size:15px;margin:12px 0 0;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px;position:relative;z-index:2;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--c-ink);color:#C9D6D1;padding-top:64px;margin-top:0}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,var(--c-brand),var(--c-lime))}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--c-brand)}
.footer-brand strong{color:#fff;font-weight:800;font-size:16px}
.footer-desc{font-size:14px;line-height:1.85;color:#A9BAB3;margin:0 0 18px;max-width:320px}
.footer-contact{font-size:13.5px;color:#A9BAB3;line-height:2}
.footer-contact span{color:var(--c-lime);font-weight:600}
.site-footer h4{color:#fff;font-size:14.5px;font-weight:700;margin:0 0 18px;letter-spacing:.02em}
.footer-links li{margin-bottom:12px}
.footer-links a{font-size:14px;color:#C9D6D1;display:inline-block;transition:color .15s var(--ease),transform .15s var(--ease)}
.footer-links a:hover{color:var(--c-lime);transform:translateX(2px)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center}
.footer-bottom p{margin:0;font-size:13px;color:#8FA39B}
.footer-bottom .footer-meta{display:flex;flex-wrap:wrap;gap:18px;font-size:13px;color:#8FA39B}

/* ---------- 回到顶部 ---------- */
.back-top{
  position:fixed;right:24px;bottom:28px;width:48px;height:48px;border-radius:50%;
  background:var(--c-brand);color:#fff;display:grid;place-items:center;border:0;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease),background .18s var(--ease);z-index:1050;
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--c-brand-700)}

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:6px}
::-webkit-scrollbar-thumb:hover{background:rgba(0,168,124,.4)}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .nav-menu{gap:20px}
  .nav-search{width:190px}
}
@media (max-width:991.98px){
  .nav-menu,.nav-search,.icon-btn,.btn-nav-cta{display:none}
  .nav-burger{display:inline-flex}
  .nav-inner{height:56px;gap:16px}
  .brand-text .brand-div,.brand-text span.brand-sub{display:none}
  .hero{padding-top:44px}
  .hero-grid{grid-template-columns:1fr;gap:40px;padding-bottom:40px}
  .hero-visual-frame img{height:340px}
  .hero-float{left:14px;bottom:14px}
  .cap-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cap-item{padding:26px 20px;border-left:1px solid var(--c-line)}
  .cap-item:nth-child(odd){border-left:0;padding-left:0}
  .cap-item:last-child{padding-right:20px}
  .steps{grid-template-columns:1fr;gap:0}
  .step{padding:24px 0 24px 28px;border-left:2px solid var(--c-line)}
  .step:nth-child(2){transform:none}
  .step::after{
    content:"";position:absolute;left:-9px;top:38px;width:16px;height:16px;border-radius:50%;
    background:var(--c-brand);border:3px solid var(--c-bg);
  }
  .step-num{font-size:52px}
  .case-grid{grid-template-columns:1fr}
  .case-card.slim .case-thumb{flex:0 0 40%}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
}
@media (max-width:767.98px){
  .section{padding:56px 0}
  .cta-section{padding-bottom:64px}
  .section-head{margin-bottom:28px}
  .hero-visual-frame img{height:260px}
  .hero-float{display:none}
  .trust-item{min-width:50%;flex:1 1 45%;padding:12px 0;border-left:0}
  .trust-bar{gap:8px}
  .case-card.slim{flex-direction:column}
  .case-card.slim .case-thumb{flex:none;aspect-ratio:16/9;min-height:0}
  .case-body{padding:20px}
  .news-body{padding:18px}
  .cap-item{padding:22px 16px}
  .cta-band{border-radius:20px;padding:32px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn-lime{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .back-top{right:16px;bottom:18px;width:44px;height:44px}
  .faq .accordion-button{padding:18px 44px 18px 14px;font-size:15.5px}
  .faq .accordion-body{padding:0 44px 20px 18px}
}
@media (max-width:575.98px){
  .hero-cta .btn-brand,.hero-cta .btn-ghost{width:100%}
  .hero-deco,.hero-deco-2,.cta-deco{display:none}
  .hero-h1{font-size:clamp(28px,8vw,34px)}
  .hero-curve{height:48px}
}

/* roulang page: article */
:root{
  --c-brand:#00A87C;
  --c-brand-700:#00815F;
  --c-brand-100:#DFF5EC;
  --c-brand-bright:#2ED3A3;
  --c-ink:#0B1210;
  --c-ink-soft:#2B3733;
  --c-muted:#63736D;
  --c-lime:#D8F24A;
  --c-bg:#F4F6F3;
  --c-surface:#FFFFFF;
  --c-line:#E2E8E3;
  --c-danger:#D9480F;
  --sh-1:0 1px 2px rgba(11,18,16,.05);
  --sh-2:0 10px 24px rgba(11,18,16,.08);
  --r-lg:20px;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","Barlow",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink-soft);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-brand-700);text-decoration:none;transition:color 180ms var(--ease);}
a:hover{color:var(--c-ink);}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.3;}
p{margin:0 0 16px;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-lime);outline-offset:2px;}
::selection{background:var(--c-brand-100);color:var(--c-ink);}
::-webkit-scrollbar{width:6px;height:6px;}
::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:999px;}
::-webkit-scrollbar-thumb:hover{background:rgba(0,168,124,.3);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1400px){.container{max-width:1280px;}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow 180ms var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.nav-inner{
  display:flex;align-items:center;gap:24px;
  height:64px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:8px;
  background:var(--c-brand);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-1);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:flex;align-items:center;gap:8px;font-size:16px;letter-spacing:-.01em;}
.brand-text .b1{font-weight:800;color:var(--c-ink);}
.brand-text .sep{width:1px;height:14px;background:var(--c-line);}
.brand-text .b2{font-weight:500;color:var(--c-muted);}

.nav-menu{display:flex;align-items:center;gap:28px;margin-left:8px;}
.nav-menu a{
  position:relative;
  font-size:14.5px;font-weight:500;color:var(--c-ink-soft);
  padding:6px 0;white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:50%;bottom:0;
  width:0;height:2px;background:var(--c-lime);
  transform:translateX(-50%);
  transition:width 180ms var(--ease);
}
.nav-menu a:hover{color:var(--c-brand);}
.nav-menu a:hover::after{width:60%;}
.nav-menu a.is-active{color:var(--c-brand);font-weight:700;}

.nav-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  width:240px;height:38px;padding:0 10px;
  background:#F1F4F1;border:1px solid transparent;border-radius:var(--r-btn);
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease);
}
.cmd-search:focus-within{border-color:var(--c-brand);background:#fff;box-shadow:0 0 0 3px rgba(0,168,124,.15);}
.cmd-search svg{width:16px;height:16px;flex:0 0 auto;stroke:var(--c-muted);}
.cmd-search input{
  flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;
  font-size:13.5px;color:var(--c-ink);font-family:inherit;
}
.cmd-search input::placeholder{color:var(--c-muted);}
.cmd-search kbd{
  font-family:var(--font-num);font-size:11px;color:var(--c-muted);
  background:#fff;border:1px solid var(--c-line);border-radius:6px;
  padding:1px 5px;line-height:1.4;
}
.icon-btn{
  width:38px;height:38px;border-radius:var(--r-btn);
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid transparent;background:transparent;
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.icon-btn svg{width:20px;height:20px;stroke:var(--c-ink-soft);fill:none;stroke-width:1.7;}
.icon-btn:hover{background:var(--c-brand-100);}
.icon-btn:hover svg{stroke:var(--c-brand);}

.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:38px;padding:0 18px;border-radius:var(--r-btn);
  background:var(--c-brand);color:#fff;font-size:14px;font-weight:600;
  border:1px solid var(--c-brand);
  transition:transform 180ms var(--ease),background 180ms var(--ease),box-shadow 180ms var(--ease);
}
.btn-main:hover{background:var(--c-brand-700);border-color:var(--c-brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-main:active{transform:translateY(0);box-shadow:none;}

.burger{display:none;width:38px;height:38px;border-radius:var(--r-btn);border:1px solid var(--c-line);background:#fff;align-items:center;justify-content:center;}
.burger svg{width:20px;height:20px;stroke:var(--c-ink);stroke-width:1.8;fill:none;}

@media (max-width:1199px){.cmd-search{width:180px;}}
@media (max-width:991px){
  .nav-menu,.cmd-search,.nav-tools .icon-btn{display:none;}
  .burger{display:inline-flex;}
  .nav-inner{height:56px;gap:12px;}
}
@media (max-width:575px){
  .brand-text .sep,.brand-text .b2{display:none;}
  .nav-tools .btn-main{display:none;}
}

/* 移动端抽屉 */
.offcanvas.mobile-drawer{background:var(--c-surface);width:320px;}
.mobile-drawer .offcanvas-header{border-bottom:1px solid var(--c-line);padding:16px 20px;}
.mobile-drawer .offcanvas-body{padding:8px 0 0;}
.mobile-drawer .drawer-link{
  display:block;padding:0 20px;height:52px;line-height:52px;
  font-size:16px;color:var(--c-ink-soft);border-bottom:1px solid var(--c-line);
}
.mobile-drawer .drawer-link.is-active{color:var(--c-brand);font-weight:700;background:var(--c-brand-100);}
.mobile-drawer .drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--c-line);}
.mobile-drawer .drawer-foot .btn-main{width:100%;height:44px;}

/* ---------- 页面主体 ---------- */
.page-main{padding:28px 0 0;}

.breadcrumb-bar{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:14px;color:var(--c-muted);line-height:1.7;
}
.breadcrumb-bar a{color:var(--c-muted);}
.breadcrumb-bar a:hover{color:var(--c-brand);}
.breadcrumb-bar .divider{color:var(--c-line);}
.breadcrumb-bar .current{color:var(--c-ink);font-weight:500;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:340px;}

.article-head{padding:32px 0 0;}
.article-head h1{
  font-size:clamp(28px,3.2vw,40px);
  font-weight:800;letter-spacing:-.02em;line-height:1.28;
  max-width:820px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  margin-top:18px;font-size:13px;color:var(--c-muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--c-line);}
.badge-pill{
  display:inline-flex;align-items:center;
  font-size:12px;line-height:1.5;padding:4px 10px;border-radius:999px;
  background:var(--c-brand-100);color:var(--c-brand-700);font-weight:600;
}
.head-rule{height:1px;background:var(--c-line);margin-top:24px;}

.article-wrap{max-width:760px;margin:0 auto;padding:40px 0 0;}
.article-body{font-size:16.5px;line-height:1.9;color:var(--c-ink-soft);}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;
  font-size:24px;font-weight:700;color:var(--c-ink);
  margin:40px 0 16px;padding-left:16px;line-height:1.4;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;
  width:4px;height:20px;border-radius:2px;background:var(--c-brand);
}
.article-body h3{font-size:19px;font-weight:700;color:var(--c-ink);margin:28px 0 12px;}
.article-body h4{font-size:17px;font-weight:700;color:var(--c-ink);margin:24px 0 10px;}
.article-body ul{margin:0 0 1.2em;padding-left:4px;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:8px;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:13px;
  width:7px;height:7px;border-radius:50%;background:var(--c-brand);
}
.article-body ol{margin:0 0 1.2em;padding-left:0;counter-reset:li;}
.article-body ol li{position:relative;padding-left:28px;margin-bottom:8px;counter-increment:li;}
.article-body ol li::before{
  content:counter(li);
  position:absolute;left:0;top:4px;
  width:20px;height:20px;border-radius:6px;background:var(--c-lime);color:var(--c-ink);
  font-family:var(--font-num);font-size:12px;font-weight:700;line-height:20px;text-align:center;
}
.article-body blockquote{
  margin:24px 0;padding:16px 18px;
  border-left:4px solid var(--c-brand);
  background:var(--c-brand-100);
  border-radius:0 12px 12px 0;
  color:var(--c-ink-soft);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:20px 0;width:100%;}
.article-body figure{margin:20px 0;}
.article-body figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:8px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:20px 0;font-size:15px;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body thead{background:var(--c-ink);}
.article-body thead th{color:#fff;font-weight:600;text-align:left;padding:12px 14px;}
.article-body tbody td{padding:12px 14px;border-bottom:1px solid var(--c-line);}
.article-body tbody tr:nth-child(even){background:#F7F9F6;}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:14px;background:var(--c-brand-100);color:var(--c-brand-700);
  padding:2px 6px;border-radius:6px;
}
.article-body pre{
  background:var(--c-ink);color:#E6F2ED;border-radius:12px;
  padding:16px;overflow-x:auto;margin:20px 0;
}
.article-body pre code{background:transparent;color:inherit;padding:0;}
.article-body a{
  color:var(--c-brand-700);text-decoration:underline;text-underline-offset:3px;
}
.article-body a:hover{color:var(--c-ink);}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:32px 0;}

.empty-block{
  margin:32px 0;padding:48px 24px;text-align:center;
  border:1px dashed var(--c-line);border-radius:var(--r-card);background:var(--c-surface);
}
.empty-block svg{width:48px;height:48px;stroke:var(--c-muted);fill:none;stroke-width:1.5;margin:0 auto 14px;}
.empty-block h3{font-size:18px;margin-bottom:8px;}
.empty-block p{font-size:14px;color:var(--c-muted);margin-bottom:18px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 20px;border-radius:var(--r-btn);
  background:#fff;border:1px solid var(--c-line);color:var(--c-ink);
  font-size:14px;font-weight:600;
  transition:border-color 180ms var(--ease),color 180ms var(--ease),background 180ms var(--ease),transform 180ms var(--ease);
}
.btn-ghost:hover{border-color:var(--c-brand);color:var(--c-brand-700);background:var(--c-brand-100);transform:translateY(-1px);}

.article-foot{padding:36px 0 0;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.tag-row .tag-label{font-size:13px;color:var(--c-muted);margin-right:2px;}
.tag{
  display:inline-flex;align-items:center;
  font-size:12px;padding:4px 12px;border-radius:999px;
  background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-ink-soft);
  transition:border-color 180ms var(--ease),color 180ms var(--ease),background 180ms var(--ease);
}
.tag:hover{border-color:var(--c-brand);color:var(--c-brand-700);background:var(--c-brand-100);}
.foot-rule{height:1px;background:var(--c-line);margin:20px 0;}
.share-row{display:flex;align-items:center;gap:10px;}
.share-row span{font-size:13px;color:var(--c-muted);margin-right:2px;}
.share-btn{
  width:40px;height:40px;border-radius:var(--r-btn);
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-surface);border:1px solid var(--c-line);
  transition:border-color 180ms var(--ease),color 180ms var(--ease),transform 180ms var(--ease);
}
.share-btn svg{width:20px;height:20px;stroke:var(--c-ink-soft);fill:none;stroke-width:1.7;}
.share-btn:hover{border-color:var(--c-brand);transform:translateY(-2px);}
.share-btn:hover svg{stroke:var(--c-brand);}

/* ---------- 相关推荐 ---------- */
.related{padding:72px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.section-head h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;letter-spacing:-.01em;}
.section-head .more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-brand);
}
.section-head .more svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;transition:transform 180ms var(--ease);}
.section-head .more:hover svg{transform:translateX(4px);}

.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(0,168,124,.2);}
.thumb{position:relative;width:100%;aspect-ratio:16/9;background:var(--c-brand-100);overflow:hidden;}
.thumb img{width:100%;height:100%;object-fit:cover;}
.post-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;}
.post-body h3{
  font-size:18px;font-weight:700;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-body h3 a{color:var(--c-ink);}
.post-card:hover .post-body h3 a{color:var(--c-brand);}
.post-body p{
  font-size:14px;color:var(--c-muted);line-height:1.7;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-muted);margin-top:2px;
}
.post-foot .arrow{color:var(--c-brand);transition:transform 180ms var(--ease);}
.post-card:hover .post-foot .arrow{transform:translateX(3px);}

@media (max-width:991px){
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .related{padding:56px 0 0;}
  .article-head{padding:24px 0 0;}
  .article-wrap{padding:32px 0 0;}
}
@media (max-width:575px){
  .card-grid{grid-template-columns:1fr;}
  .post-body{padding:18px;}
  .related{padding:44px 0 0;}
}

/* ---------- CTA ---------- */
.cta-outer{padding:72px 0 0;}
.cta-band{
  position:relative;overflow:hidden;
  background:var(--c-ink);border-radius:24px;
  padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-80px;
  width:320px;height:320px;border-radius:50%;
  border:1.5px solid rgba(216,242,74,.12);
  box-shadow:0 0 0 40px rgba(0,168,124,.05);
  pointer-events:none;
}
.cta-band h2{color:#fff;font-size:clamp(20px,2.2vw,26px);font-weight:700;margin-bottom:8px;}
.cta-band p{color:#C9D6D1;font-size:14.5px;margin:0;max-width:520px;}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;position:relative;z-index:1;}
.btn-on-dark{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  background:var(--c-brand-bright);color:#06231B;font-size:15px;font-weight:700;
  transition:transform 180ms var(--ease),background 180ms var(--ease),box-shadow 180ms var(--ease);
}
.btn-on-dark:hover{background:#4BE2B7;color:#06231B;transform:translateY(-1px);box-shadow:0 10px 24px rgba(46,211,163,.25);}
.link-on-dark{
  display:inline-flex;align-items:center;gap:6px;
  color:#C9D6D1;font-size:14.5px;font-weight:600;
}
.link-on-dark:hover{color:var(--c-lime);}
@media (max-width:767px){
  .cta-outer{padding:56px 0 0;}
  .cta-band{padding:32px 22px;border-radius:20px;}
  .cta-actions{width:100%;}
  .btn-on-dark{width:100%;}
}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  background:var(--c-ink);
  color:#C9D6D1;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--c-brand),var(--c-lime));
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;
  padding:64px 0 40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--c-brand);}
.footer-brand strong{color:#fff;font-size:16px;font-weight:800;letter-spacing:-.01em;}
.footer-desc{font-size:14px;line-height:1.8;color:#9FB0AA;margin-bottom:16px;}
.footer-contact{font-size:13.5px;line-height:1.9;color:#9FB0AA;}
.footer-contact span{color:#fff;}
.site-footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{
  font-size:14px;color:#C9D6D1;
  display:inline-block;
  transition:color 150ms var(--ease),transform 150ms var(--ease);
}
.footer-links a:hover{color:var(--c-lime);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8B9C96;
}
.footer-meta{display:flex;gap:20px;flex-wrap:wrap;}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 32px;}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{margin-top:64px;}
}

/* ---------- 回到顶部 ---------- */
.back-top{
  position:fixed;right:24px;bottom:24px;z-index:1050;
  width:48px;height:48px;border-radius:50%;
  background:var(--c-brand);border:0;color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity 220ms var(--ease),transform 220ms var(--ease),visibility 220ms var(--ease),background 180ms var(--ease);
}
.back-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{background:var(--c-brand-700);}
.back-top svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:2;}
@media (max-width:575px){.back-top{right:16px;bottom:16px;width:44px;height:44px;}}

/* roulang page: category1 */
:root{
  --c-brand:#00A87C;
  --c-brand-700:#00815F;
  --c-brand-100:#DFF5EC;
  --c-brand-bright:#2ED3A3;
  --c-ink:#0B1210;
  --c-ink-soft:#2B3733;
  --c-muted:#63736D;
  --c-lime:#D8F24A;
  --c-bg:#F4F6F3;
  --c-surface:#FFFFFF;
  --c-line:#E2E8E3;
  --c-danger:#D9480F;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(11,18,16,.05);
  --sh-2:0 10px 24px rgba(11,18,16,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-body-font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-body-color:var(--c-ink-soft);
  --bs-body-bg:var(--c-bg);
  --bs-primary:#00A87C;
  --bs-primary-rgb:0,168,124;
  --bs-link-color:#00815F;
  --bs-link-hover-color:#0B1210;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--c-bg);color:var(--c-ink-soft);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-brand-700);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--c-ink)}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-lime);outline-offset:2px;border-radius:4px}
::selection{background:var(--c-brand-100);color:var(--c-ink)}
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:999px}
::-webkit-scrollbar-thumb:hover{background:rgba(0,168,124,.3)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1400px){.container{max-width:1280px}}

/* ============ 按钮 ============ */
.btn-solid,.btn-ghost,.btn-text{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;border-radius:var(--r-btn);transition:all .18s var(--ease);cursor:pointer;border:1px solid transparent}
.btn-solid{background:var(--c-brand);color:#fff;padding:12px 22px;box-shadow:var(--sh-1)}
.btn-solid:hover{background:var(--c-brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-solid:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-solid.on-dark{background:var(--c-brand-bright);color:var(--c-ink)}
.btn-solid.on-dark:hover{background:#25c295;color:var(--c-ink)}
.btn-ghost{background:var(--c-surface);color:var(--c-ink);border-color:var(--c-line);padding:11px 21px}
.btn-ghost:hover{border-color:var(--c-brand);color:var(--c-brand-700);background:var(--c-brand-100)}
.btn-text{background:none;color:var(--c-brand-700);padding:12px 4px}
.btn-text:hover{color:var(--c-ink);text-decoration:underline;text-underline-offset:4px}
.btn-text svg{transition:transform .18s var(--ease)}
.btn-text:hover svg{transform:translateX(4px)}
.btn-sm{padding:9px 16px;font-size:14px}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(255,255,255,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--c-line);transition:box-shadow .18s var(--ease)}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand-mark{width:32px;height:32px;border-radius:8px;background:var(--c-brand);display:inline-flex;align-items:center;justify-content:center;flex:0 0 32px}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:inline-flex;align-items:center;gap:8px;font-size:16px;letter-spacing:-.01em}
.brand-text strong{font-weight:800;color:var(--c-ink)}
.brand-text .divider{width:1px;height:14px;background:var(--c-line);display:inline-block}
.brand-text span{font-weight:500;color:var(--c-muted)}
.nav-menu{display:flex;align-items:center;gap:28px;margin:0 auto}
.nav-menu a{position:relative;font-size:14.5px;font-weight:500;color:var(--c-ink-soft);padding:8px 0;white-space:nowrap}
.nav-menu a::after{content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;background:var(--c-lime);transform:translateX(-50%);transition:width .18s var(--ease)}
.nav-menu a:hover{color:var(--c-brand)}
.nav-menu a:hover::after{width:60%}
.nav-menu a.is-active{color:var(--c-brand);font-weight:700}
.nav-menu a.is-active::after{width:60%}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-search{position:relative;display:flex;align-items:center;width:240px;height:38px;background:#F1F4F1;border:1px solid transparent;border-radius:var(--r-btn);padding:0 10px;transition:all .18s var(--ease)}
.nav-search:focus-within{border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(0,168,124,.15);background:#fff}
.nav-search svg{width:16px;height:16px;color:var(--c-muted);flex:0 0 16px}
.nav-search input{flex:1;border:0;background:transparent;outline:none;font-size:13.5px;color:var(--c-ink);padding:0 8px}
.nav-search input::placeholder{color:var(--c-muted)}
.nav-search kbd{font-family:inherit;font-size:11px;color:var(--c-muted);background:#fff;border:1px solid var(--c-line);border-radius:6px;padding:1px 6px;line-height:1.6}
.icon-btn{width:38px;height:38px;border-radius:var(--r-btn);border:1px solid transparent;background:transparent;display:inline-flex;align-items:center;justify-content:center;color:var(--c-ink-soft);cursor:pointer;transition:all .18s var(--ease)}
.icon-btn svg{width:22px;height:22px}
.icon-btn:hover{color:var(--c-brand);background:var(--c-brand-100)}
.hamburger{display:none;width:40px;height:40px;border:1px solid var(--c-line);border-radius:var(--r-btn);background:#fff;align-items:center;justify-content:center;color:var(--c-ink)}
.hamburger svg{width:20px;height:20px}
.offcanvas{border:0}
.offcanvas-header{border-bottom:1px solid var(--c-line);padding:16px 20px}
.offcanvas-title{font-size:16px;font-weight:800;color:var(--c-ink)}
.mobile-nav{display:flex;flex-direction:column}
.mobile-nav a{display:flex;align-items:center;font-size:16px;color:var(--c-ink);line-height:52px;border-bottom:1px solid var(--c-line)}
.mobile-nav a.is-active{color:var(--c-brand);font-weight:700}
.mobile-cta{margin-top:20px}
.mobile-cta .btn-solid{width:100%}

/* ============ 面包屑 ============ */
.crumb-bar{padding:18px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-muted)}
.crumb a{color:var(--c-muted)}
.crumb a:hover{color:var(--c-brand)}
.crumb .sep{color:var(--c-line)}
.crumb .current{color:var(--c-ink);font-weight:600}

/* ============ 分类 Hero ============ */
.cat-hero{padding:24px 0 0}
.cat-hero-inner{position:relative;background:var(--c-surface);border:1px solid var(--c-line);border-radius:20px;box-shadow:var(--sh-1);overflow:hidden;padding:40px}
.cat-hero-inner::before{content:"";position:absolute;right:-60px;top:-80px;width:280px;height:280px;border:1.5px solid var(--c-brand);opacity:.1;border-radius:50%;pointer-events:none}
.cat-hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;min-height:300px}
.badge-pill{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;border-radius:999px;padding:4px 12px;line-height:1.6}
.badge-soft{background:var(--c-brand-100);color:var(--c-brand-700)}
.badge-lime{background:var(--c-lime);color:var(--c-ink)}
.cat-hero h1{font-size:clamp(28px,3.4vw,42px);font-weight:800;line-height:1.22;letter-spacing:-.02em;margin:16px 0 14px}
.cat-hero .lead{font-size:16.5px;color:var(--c-ink-soft);line-height:1.8;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:26px}
.hero-points{display:flex;flex-wrap:wrap;gap:28px;margin-top:28px;padding-top:22px;border-top:1px solid var(--c-line)}
.hero-points .pt{display:flex;flex-direction:column;gap:2px}
.hero-points .num{font-family:Inter,Barlow,"HarmonyOS Sans SC",sans-serif;font-size:26px;font-weight:800;color:var(--c-brand);line-height:1.1;letter-spacing:-.02em}
.hero-points .lbl{font-size:12.5px;color:var(--c-muted)}
.cat-hero-media{position:relative}
.media{position:relative;overflow:hidden;border-radius:var(--r-img);background:var(--c-brand-100)}
.media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.media-16x9{aspect-ratio:16/9}
.media-4x3{aspect-ratio:4/3}
.media-hero{aspect-ratio:16/10;border-radius:20px}
.media-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(0,168,124,.16),rgba(11,18,16,.08));pointer-events:none}
.float-card{position:absolute;left:-18px;bottom:22px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-img);box-shadow:var(--sh-2);padding:14px 18px;display:flex;flex-direction:column;gap:2px}
.float-card .float-num{font-family:Inter,Barlow,sans-serif;font-size:22px;font-weight:800;color:var(--c-brand);line-height:1.1}
.float-card .float-label{font-size:12.5px;color:var(--c-muted)}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:10px;font-size:15px;color:var(--c-muted);max-width:620px}
.section-head.left-only{display:block}

/* ============ 2x2 卡片网格 ============ */
.card-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.feature-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:24px;display:flex;flex-direction:column;gap:16px;transition:all .18s var(--ease)}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(0,168,124,.28)}
.feature-card .fc-head{display:flex;align-items:center;gap:12px}
.fi{width:42px;height:42px;border-radius:12px;background:var(--c-brand-100);display:inline-flex;align-items:center;justify-content:center;flex:0 0 42px;color:var(--c-brand-700)}
.fi svg{width:22px;height:22px}
.feature-card h3{font-size:18px;font-weight:700}
.feature-card p{font-size:14.5px;color:var(--c-muted);line-height:1.75}
.feature-card .media{aspect-ratio:16/9}
.feature-card:hover .media img{transform:scale(1.03)}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--c-brand-700);margin-top:auto}
.link-arrow svg{width:16px;height:16px;transition:transform .18s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ============ 图文交替长条 ============ */
.zig{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;padding:32px 0}
.zig.reverse .zig-media{order:2}
.zig h3{font-size:22px;font-weight:700;margin-bottom:14px}
.zig p{font-size:15.5px;color:var(--c-ink-soft);line-height:1.85;margin-bottom:12px}
.check-list{margin-top:18px;display:flex;flex-direction:column;gap:12px}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--c-ink-soft)}
.check-list .dot{width:18px;height:18px;border-radius:6px;background:var(--c-brand-100);color:var(--c-brand-700);display:inline-flex;align-items:center;justify-content:center;flex:0 0 18px;margin-top:4px;font-size:11px;font-weight:700}
.step-line{display:flex;gap:14px;margin-top:22px}
.step-line .sl-item{flex:1;border-top:2px dashed var(--c-line);padding-top:14px}
.step-line .sl-num{font-family:Barlow Condensed,Inter,sans-serif;font-size:28px;font-weight:800;color:var(--c-brand);opacity:.35;line-height:1}
.step-line .sl-text{font-size:13.5px;color:var(--c-muted);margin-top:6px}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px}
.faq-aside h2{font-size:clamp(24px,2.6vw,32px)}
.faq-aside p{margin:14px 0 22px;font-size:14.5px;color:var(--c-muted)}
.faq-accordion .accordion-item{border:0;border-bottom:1px solid var(--c-line);background:transparent}
.faq-accordion .accordion-button{position:relative;background:transparent;border:0;box-shadow:none!important;padding:20px 0 20px 18px;font-size:16px;font-weight:700;color:var(--c-ink);display:flex;align-items:flex-start;gap:14px;line-height:1.6}
.faq-accordion .accordion-button::after{display:none}
.faq-accordion .accordion-button::before{content:"";position:absolute;left:0;top:24px;width:3px;height:0;background:var(--c-lime);border-radius:2px;transition:height .18s var(--ease)}
.faq-accordion .accordion-button:not(.collapsed){color:var(--c-brand)}
.faq-accordion .accordion-button:not(.collapsed)::before{height:20px}
.faq-accordion .pm{position:relative;width:18px;height:18px;flex:0 0 18px;margin-top:4px;color:var(--c-brand)}
.faq-accordion .pm::before,.faq-accordion .pm::after{content:"";position:absolute;left:1px;right:1px;top:50%;height:1.5px;background:currentColor;transform:translateY(-50%);transition:transform .18s var(--ease)}
.faq-accordion .pm::after{transform:translateY(-50%) rotate(90deg)}
.faq-accordion .accordion-button:not(.collapsed) .pm::after{transform:translateY(-50%) rotate(0deg)}
.faq-accordion .accordion-body{padding:0 0 22px 32px;font-size:14.5px;color:var(--c-muted);line-height:1.85}

/* ============ CTA 条 ============ */
.cta-section{padding:0 0 96px}
.cta-box{position:relative;overflow:hidden;background:var(--c-ink);border-radius:24px;padding:52px 48px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center}
.cta-box::before{content:"";position:absolute;left:-40px;bottom:-120px;width:340px;height:340px;border:1.5px solid var(--c-brand-bright);opacity:.12;border-radius:50%;pointer-events:none}
.cta-box::after{content:"";position:absolute;right:12%;top:-90px;width:220px;height:220px;border:1.5px solid var(--c-lime);opacity:.08;border-radius:50%;pointer-events:none}
.cta-box h2{color:#fff;font-size:clamp(22px,2.4vw,30px);position:relative}
.cta-box p{color:#A9BCB6;font-size:14.5px;margin-top:12px;position:relative;max-width:620px}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.cta-actions .btn-text{color:#C9D6D1}
.cta-actions .btn-text:hover{color:#fff}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:#C9D6D1;padding:64px 0 24px;position:relative}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--c-brand),var(--c-lime))}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand strong{color:#fff;font-size:16px;font-weight:800}
.footer-desc{font-size:14px;line-height:1.8;color:#A9BCB6;max-width:340px}
.footer-contact{margin-top:16px;font-size:13.5px;color:#8FA39D;line-height:1.9}
.footer-contact span{color:#C9D6D1}
.site-footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:#A9BCB6;font-size:14px;display:inline-block;transition:all .15s var(--ease)}
.footer-links a:hover{color:var(--c-lime);transform:translateX(2px)}
.footer-bottom{margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;align-items:center;font-size:13px;color:#8FA39D}
.footer-meta{display:flex;flex-wrap:wrap;gap:18px}

/* ============ 回到顶部 ============ */
.to-top{position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;background:var(--c-brand);color:#fff;border:0;display:inline-flex;align-items:center;justify-content:center;box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(8px);transition:all .18s var(--ease);cursor:pointer;z-index:1040}
.to-top svg{width:20px;height:20px}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--c-brand-700)}

/* ============ 响应式 ============ */
@media (max-width:1399px){
  .nav-search{width:200px}
}
@media (max-width:1199px){
  .nav-search{width:180px}
  .nav-menu{gap:20px}
  .cat-hero-grid{gap:32px}
}
@media (max-width:991px){
  .nav-menu{display:none}
  .nav-search{display:none}
  .hamburger{display:inline-flex}
  .header-inner{gap:12px}
  .header-actions{margin-left:auto}
  .section{padding:72px 0}
  .cat-hero-inner{padding:28px}
  .cat-hero-grid{grid-template-columns:1fr;gap:28px}
  .float-card{left:16px;bottom:16px}
  .card-grid-2{grid-template-columns:1fr}
  .zig{grid-template-columns:1fr;gap:24px;padding:24px 0}
  .zig.reverse .zig-media{order:0}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .cta-box{grid-template-columns:1fr;padding:40px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .cta-section{padding-bottom:72px}
  .brand-text span,.brand-text .divider{display:none}
  .cat-hero h1{font-size:26px}
  .hero-points{gap:18px}
  .hero-actions .btn-solid,.hero-actions .btn-ghost{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .step-line{flex-direction:column;gap:18px}
  .to-top{right:16px;bottom:16px;width:44px;height:44px}
}
@media (max-width:575px){
  .cat-hero-inner{border-radius:16px;padding:22px 18px}
  .float-card{display:none}
  .feature-card{padding:20px}
  .cta-box{padding:32px 20px;border-radius:20px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category2 */
:root{
  --c-brand:#00A87C;
  --c-brand-700:#00815F;
  --c-brand-100:#DFF5EC;
  --c-brand-bright:#2ED3A3;
  --c-ink:#0B1210;
  --c-ink-soft:#2B3733;
  --c-muted:#63736D;
  --c-lime:#D8F24A;
  --c-bg:#F4F6F3;
  --c-surface:#FFFFFF;
  --c-line:#E2E8E3;
  --c-danger:#D9480F;
  --sh-1:0 1px 2px rgba(11,18,16,.05);
  --sh-2:0 10px 24px rgba(11,18,16,.08);
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:Inter,"Barlow",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink-soft);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-brand);text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t),transform var(--t)}
a:hover{color:var(--c-brand-700)}
button,input{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-lime);outline-offset:2px;border-radius:4px}
::selection{background:var(--c-brand-100);color:var(--c-ink)}
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:99px}
::-webkit-scrollbar-thumb:hover{background:rgba(0,168,124,.3)}
.container{width:100%;max-width:1200px !important;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:1400px){.container{max-width:1280px !important}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:8px;
  background:var(--c-brand);display:grid;place-items:center;
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;align-items:center;gap:8px;font-size:16.5px;letter-spacing:-.01em;white-space:nowrap}
.brand-text strong{font-weight:800;color:var(--c-ink)}
.brand-text i{display:block;width:1px;height:16px;background:var(--c-line)}
.brand-text em{font-style:normal;font-weight:500;color:var(--c-muted)}
.nav-menu{display:flex;align-items:center;gap:28px;margin-left:6px}
.nav-menu a{
  position:relative;font-size:14.5px;font-weight:500;color:var(--c-ink-soft);
  padding:6px 0;white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:20%;right:20%;bottom:0;height:2px;
  background:var(--c-lime);border-radius:2px;transform:scaleX(0);transform-origin:center;
  transition:transform var(--t);
}
.nav-menu a:hover{color:var(--c-brand)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.is-active{color:var(--c-brand);font-weight:700}
.nav-menu a.is-active::after{transform:scaleX(1)}
.header-tools{margin-left:auto;display:flex;align-items:center;gap:12px}
.cmd-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:240px;height:38px;padding:0 10px;
  background:#F1F4F1;border:1px solid transparent;border-radius:var(--r-btn);
  transition:border-color var(--t),box-shadow var(--t),background-color var(--t);
}
.cmd-search svg{width:16px;height:16px;flex:0 0 16px;color:var(--c-muted)}
.cmd-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--c-ink);
}
.cmd-search input::placeholder{color:var(--c-muted)}
.cmd-search kbd{
  font:600 11px/1 var(--font-num);color:var(--c-muted);background:#fff;
  border:1px solid var(--c-line);border-radius:6px;padding:3px 5px;
}
.cmd-search:focus-within{background:#fff;border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(0,168,124,.15)}
.icon-btn{
  display:grid;place-items:center;width:38px;height:38px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);background:#fff;color:var(--c-ink-soft);
}
.icon-btn svg{width:20px;height:20px}
.icon-btn:hover{color:var(--c-brand);border-color:rgba(0,168,124,.35)}
.hamburger{
  display:none;width:40px;height:40px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);background:#fff;color:var(--c-ink);
  align-items:center;justify-content:center;
}
.hamburger svg{width:20px;height:20px}

/* ---------- 按钮 ---------- */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:38px;padding:0 18px;border:1px solid transparent;border-radius:var(--r-btn);
  background:var(--c-brand);color:#fff;font-size:14.5px;font-weight:600;
  cursor:pointer;white-space:nowrap;transition:all var(--t);
}
.btn-main:hover{background:var(--c-brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-main:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-main.lg{height:46px;padding:0 26px;font-size:15.5px}
.btn-main.block{width:100%}
.btn-main.on-dark{background:var(--c-brand-bright);color:var(--c-ink)}
.btn-main.on-dark:hover{background:#5CE3BD;color:var(--c-ink)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:38px;padding:0 18px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;color:var(--c-ink);font-size:14.5px;font-weight:600;
  cursor:pointer;white-space:nowrap;transition:all var(--t);
}
.btn-ghost:hover{border-color:var(--c-brand);color:var(--c-brand);background:var(--c-brand-100)}
.btn-ghost.lg{height:46px;padding:0 26px;font-size:15.5px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--c-brand);background:none;border:0;
  padding:6px 0;cursor:pointer;
}
.btn-text span{transition:transform var(--t)}
.btn-text:hover{color:var(--c-brand-700);text-decoration:underline;text-underline-offset:3px}
.btn-text:hover span{transform:translateX(4px)}
.btn-text.on-dark{color:#C9D6D1}
.btn-text.on-dark:hover{color:var(--c-lime)}

/* ---------- 徽章 / 面包屑 ---------- */
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;font-size:12px;line-height:1.5;font-weight:600;
  background:var(--c-brand-100);color:var(--c-brand-700);
}
.badge-pill.lime{background:var(--c-lime);color:var(--c-ink)}
.breadcrumb-row{
  display:flex;align-items:center;justify-content:center;gap:8px;
  font-size:14px;color:var(--c-muted);margin-bottom:20px;flex-wrap:wrap;
}
.breadcrumb-row a{color:var(--c-muted)}
.breadcrumb-row a:hover{color:var(--c-brand)}
.breadcrumb-row em{font-style:normal;color:var(--c-ink)}

/* ---------- 页面横幅 ---------- */
.page-banner{
  background:linear-gradient(180deg,var(--c-brand-100) 0%,#EDF7F2 62%,var(--c-bg) 100%);
  padding:44px 0 64px;text-align:center;border-bottom:1px solid var(--c-line);
}
.page-banner h1{
  font-size:clamp(30px,4vw,46px);font-weight:800;line-height:1.24;
  letter-spacing:-.02em;color:var(--c-ink);margin:14px 0 16px;
}
.page-banner .banner-sub{
  max-width:660px;margin:0 auto;font-size:16.5px;color:var(--c-ink-soft);
}
.banner-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:28px}

/* ---------- 要点条 ---------- */
.keypoints{padding:0 0 8px}
.keypoint-strip{
  display:grid;grid-template-columns:repeat(3,1fr);
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;margin-top:-34px;position:relative;z-index:2;
}
.keypoint{padding:28px 26px;border-left:1px solid var(--c-line)}
.keypoint:first-child{border-left:0}
.kp-icon{
  display:grid;place-items:center;width:44px;height:44px;border-radius:12px;
  background:var(--c-brand-100);color:var(--c-brand-700);margin-bottom:14px;
}
.kp-icon svg{width:24px;height:24px}
.keypoint h3{font-size:18px;font-weight:700;color:var(--c-ink);margin-bottom:8px;line-height:1.4}
.keypoint p{font-size:14.5px;color:var(--c-muted);line-height:1.75}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-head{margin-bottom:32px}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3;
  color:var(--c-ink);letter-spacing:-.01em;
}
.section-head p{margin-top:10px;color:var(--c-muted);font-size:15.5px;max-width:680px}

/* ---------- 正文内容区 ---------- */
.content-section{margin-bottom:56px;scroll-margin-top:96px}
.content-section:last-of-type{margin-bottom:0}
.content-section > h2{
  position:relative;padding-left:16px;margin-bottom:16px;
  font-size:clamp(21px,2.2vw,27px);font-weight:700;line-height:1.35;color:var(--c-ink);
}
.content-section > h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:2px;background:var(--c-brand);
}
.content-section h3{font-size:19px;font-weight:700;color:var(--c-ink);margin:26px 0 10px;line-height:1.4}
.content-section p{margin-bottom:16px;color:var(--c-ink-soft)}
.content-section p.muted{color:var(--c-muted);font-size:14.5px}
.lead-note{
  background:var(--c-brand-100);border-radius:0 12px 12px 0;border-left:4px solid var(--c-brand);
  padding:16px 20px;font-size:15px;color:var(--c-ink-soft);margin-bottom:24px;
}
.dot-list{margin:0 0 20px}
.dot-list li{position:relative;padding-left:24px;margin-bottom:10px;color:var(--c-ink-soft)}
.dot-list li::before{
  content:"";position:absolute;left:4px;top:12px;width:8px;height:8px;border-radius:50%;
  background:var(--c-brand);
}
.square-list{margin:0 0 20px}
.square-list li{position:relative;padding-left:24px;margin-bottom:10px;color:var(--c-ink-soft)}
.square-list li::before{
  content:"";position:absolute;left:4px;top:11px;width:8px;height:8px;border-radius:3px;
  background:var(--c-lime);
}
.step-list{margin:6px 0 22px;counter-reset:none}
.step-list li{display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--c-line)}
.step-list li:last-child{border-bottom:0}
.step-list .num{
  font-family:var(--font-num);font-size:15px;font-weight:800;color:var(--c-brand);
  min-width:30px;line-height:1.7;
}
.step-list .txt{flex:1;color:var(--c-ink-soft)}
.step-list .txt strong{display:block;color:var(--c-ink);font-weight:700;margin-bottom:2px}

.mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:22px 0 8px}
.mini-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-img);
  padding:20px;box-shadow:var(--sh-1);transition:all var(--t);
}
.mini-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(0,168,124,.3)}
.mini-card h3{font-size:16px;font-weight:700;color:var(--c-ink);margin:0 0 8px}
.mini-card p{font-size:14px;color:var(--c-muted);line-height:1.75;margin:0}
.mini-card .mini-icon{
  display:grid;place-items:center;width:36px;height:36px;border-radius:10px;
  background:var(--c-brand-100);color:var(--c-brand-700);margin-bottom:12px;
}
.mini-card .mini-icon svg{width:20px;height:20px}

.figure-block{margin:26px 0}
.figure-frame{
  position:relative;width:100%;aspect-ratio:16/9;border-radius:var(--r-img);
  overflow:hidden;background:var(--c-brand-100);
}
.figure-frame img{width:100%;height:100%;object-fit:cover}
.figure-block figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:10px}

/* ---------- 侧边目录 ---------- */
.toc{position:sticky;top:92px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1)}
.toc h2{font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--c-muted);margin-bottom:11px}
.toc a{
  display:block;font-size:14.5px;color:var(--c-muted);
  padding:8px 10px;border-left:3px solid transparent;transition:all var(--t);
}
.toc a:hover{color:var(--c-brand);background:var(--c-brand-100)}
.toc a.is-active{color:var(--c-ink);font-weight:600;border-left-color:var(--c-lime)}
.toc-tip{margin-top:16px;padding-top:16px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-muted);line-height:1.75}
.toc-tip a{display:inline;padding:0;border:0;color:var(--c-brand);font-size:13px}

/* ---------- FAQ ---------- */
.faq-section{
  background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
}
.faq-wrap{max-width:880px;margin:0 auto}
.faq-accordion .accordion-item{
  position:relative;background:transparent;border:0;border-bottom:1px solid var(--c-line);
}
.faq-accordion .accordion-item:first-child{border-top:1px solid var(--c-line)}
.faq-accordion .accordion-header{margin:0}
.faq-accordion .accordion-button{
  display:flex;align-items:flex-start;gap:14px;width:100%;
  padding:22px 0 22px 14px;background:transparent;border:0;border-radius:0;
  box-shadow:none !important;font-size:17px;font-weight:600;color:var(--c-ink);
  transition:color var(--t);
}
.faq-accordion .accordion-button::after{display:none}
.faq-accordion .accordion-button::before{
  content:"";position:absolute;left:0;top:24px;width:3px;height:22px;border-radius:2px;
  background:var(--c-lime);opacity:0;transform:scaleY(.4);transform-origin:top;
  transition:opacity var(--t),transform var(--t);
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--c-brand)}
.faq-accordion .accordion-button:not(.collapsed)::before{opacity:1;transform:scaleY(1)}
.faq-accordion .accordion-button:focus{box-shadow:none}
.faq-num{font-family:var(--font-num);font-size:14px;font-weight:800;color:var(--c-muted);min-width:26px;padding-top:4px}
.faq-accordion .accordion-button:not(.collapsed) .faq-num{color:var(--c-brand)}
.faq-q{flex:1;line-height:1.5;text-align:left}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px;margin-top:5px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-ink-soft);border-radius:2px;transition:all var(--t);
}
.faq-icon::before{left:0;right:0;top:8px;height:1.5px}
.faq-icon::after{top:0;bottom:0;left:8px;width:1.5px}
.faq-accordion .accordion-button:not(.collapsed) .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-accordion .accordion-button:not(.collapsed) .faq-icon::before{background:var(--c-brand)}
.faq-accordion .accordion-body{
  padding:0 30px 24px 44px;font-size:15.5px;line-height:1.85;color:var(--c-ink-soft);
}
.faq-accordion .accordion-body p{margin:0}

/* ---------- 底部 CTA ---------- */
.cta-section{padding:88px 0 0}
.cta-inner{
  background:var(--c-ink);border-radius:24px;padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-copy h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;color:#fff;line-height:1.32;margin-bottom:12px}
.cta-copy p{color:#C9D6D1;font-size:15.5px;max-width:560px}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--c-ink);color:#C9D6D1;
  padding:64px 0 28px;margin-top:96px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--c-brand),var(--c-lime));
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand strong{color:#fff;font-size:16.5px;font-weight:800}
.footer-desc{font-size:14px;line-height:1.85;color:#9FB0AA;margin-bottom:16px;max-width:330px}
.footer-contact{font-size:13.5px;line-height:1.95;color:#9FB0AA}
.footer-contact span{color:var(--c-lime)}
.site-footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{display:inline-block;font-size:14px;color:#C9D6D1;transition:all 150ms ease}
.footer-links a:hover{color:var(--c-lime);transform:translateX(2px)}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8C9C96;
}
.footer-bottom p{margin:0}
.footer-meta{display:flex;gap:20px;flex-wrap:wrap}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  display:grid;place-items:center;width:48px;height:48px;border-radius:50%;
  background:var(--c-brand);color:#fff;border:0;cursor:pointer;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity var(--t),transform var(--t),visibility var(--t),background-color var(--t);
}
.to-top svg{width:20px;height:20px}
.to-top:hover{background:var(--c-brand-700)}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}

/* ---------- 移动端抽屉 ---------- */
.drawer{width:320px !important;background:#fff;border-left:1px solid var(--c-line)}
.drawer .offcanvas-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;border-bottom:1px solid var(--c-line);
}
.drawer-title{font-size:15.5px;font-weight:800;color:var(--c-ink)}
.drawer .offcanvas-body{display:flex;flex-direction:column;padding:8px 20px 20px}
.drawer-nav{flex:1}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;
  font-size:16px;color:var(--c-ink-soft);border-bottom:1px solid var(--c-line);
}
.drawer-nav a.is-active{color:var(--c-brand);font-weight:700}
.drawer-foot{padding-top:20px}
.drawer-hint{font-size:13px;color:var(--c-muted);margin-top:12px;text-align:center}

/* ---------- 响应式 ---------- */
@media(max-width:1199px){
  .cmd-search{width:180px}
  .nav-menu{gap:20px}
}
@media(max-width:991px){
  .nav-menu{display:none}
  .cmd-search{display:none}
  .hamburger{display:inline-flex}
  .header-inner{height:56px}
  .section{padding:72px 0}
  .keypoint-strip{grid-template-columns:1fr;margin-top:-28px}
  .keypoint{border-left:0;border-top:1px solid var(--c-line);padding:22px 20px}
  .keypoint:first-child{border-top:0}
  .mini-grid{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:36px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .toc{position:static;margin-bottom:28px;padding:16px}
  .toc-list{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px}
  .toc a{white-space:nowrap;border-left:0;border-bottom:3px solid transparent;padding:6px 4px}
  .toc a.is-active{border-left:0;border-bottom-color:var(--c-lime)}
  .toc-tip{display:none}
}
@media(max-width:767px){
  .section{padding:56px 0}
  .page-banner{padding:32px 0 52px}
  .content-section{margin-bottom:44px}
  .faq-accordion .accordion-body{padding:0 12px 22px 40px}
  .faq-accordion .accordion-button{font-size:16px;padding-right:4px}
  .cta-section{padding:56px 0 0}
  .site-footer{padding:48px 0 24px;margin-top:64px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .btn-main.lg,.btn-ghost.lg{width:100%}
  .banner-actions{flex-direction:column}
  .to-top{right:16px;bottom:16px;width:44px;height:44px}
}
@media(max-width:575px){
  .brand-text em,.brand-text i{display:none}
  .keypoint-strip{border-radius:14px}
  .cta-inner{border-radius:18px;padding:28px 20px}
  .figure-frame{aspect-ratio:4/3}
}

/* roulang page: category3 */
:root{
  --c-brand:#00A87C;
  --c-brand-700:#00815F;
  --c-brand-bright:#2ED3A3;
  --c-brand-100:#DFF5EC;
  --c-ink:#0B1210;
  --c-ink-soft:#2B3733;
  --c-muted:#63736D;
  --c-lime:#D8F24A;
  --c-bg:#F4F6F3;
  --c-surface:#FFFFFF;
  --c-line:#E2E8E3;
  --c-danger:#D9480F;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(11,18,16,.05);
  --sh-2:0 10px 24px rgba(11,18,16,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"Inter","Barlow","Barlow Condensed",ui-sans-serif,system-ui,sans-serif;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink-soft);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
::selection{background:var(--c-lime);color:var(--c-ink)}
:focus-visible{outline:2px solid var(--c-lime);outline-offset:2px;border-radius:6px}
*{scrollbar-width:thin;scrollbar-color:#CBD6D1 transparent}
*::-webkit-scrollbar{width:6px;height:6px}
*::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:99px}
*::-webkit-scrollbar-thumb:hover{background:rgba(0,168,124,.3)}

/* ============ 容器与板块 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1400px){.container{max-width:1280px}}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3}
.section-head p{margin-top:12px;color:var(--c-muted);font-size:15px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--c-brand-700);
  background:var(--c-brand-100);border-radius:999px;padding:4px 12px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-brand)}

/* ============ 按钮 ============ */
.btn-brand,.btn-outline-c,.btn-text{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-weight:600;font-size:15px;line-height:1;
  padding:13px 22px;border:1px solid transparent;cursor:pointer;
  transition:transform var(--t),background-color var(--t),color var(--t),border-color var(--t),box-shadow var(--t);
}
.btn-brand{background:var(--c-brand);color:#fff;box-shadow:var(--sh-1)}
.btn-brand:hover{background:var(--c-brand-700);transform:translateY(-1px);box-shadow:var(--sh-2);color:#fff}
.btn-brand:active{transform:translateY(0)}
.btn-outline-c{background:var(--c-surface);color:var(--c-ink);border-color:var(--c-line)}
.btn-outline-c:hover{border-color:var(--c-brand);color:var(--c-brand-700);background:var(--c-brand-100);transform:translateY(-1px)}
.btn-text{padding:6px 0;background:none;color:var(--c-brand-700);font-weight:600}
.btn-text svg{transition:transform var(--t)}
.btn-text:hover{text-decoration:underline;text-underline-offset:4px}
.btn-text:hover svg{transform:translateX(4px)}
.btn-sm{padding:10px 16px;font-size:14px}
.btn-block{width:100%}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;gap:24px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:8px;background:var(--c-brand);
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;align-items:center;gap:8px;font-size:17px;line-height:1}
.brand-text strong{font-weight:800;color:var(--c-ink);letter-spacing:-.01em}
.brand-text i{display:block;width:1px;height:16px;background:var(--c-line);font-style:normal}
.brand-text em{font-style:normal;font-weight:500;color:var(--c-muted);font-size:15px}

.nav-menu{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-menu a{
  position:relative;font-size:14.5px;font-weight:500;color:var(--c-ink-soft);
  padding:20px 0;transition:color var(--t);white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:50%;bottom:12px;width:0;height:2px;
  background:var(--c-lime);transform:translateX(-50%);transition:width var(--t);
}
.nav-menu a:hover{color:var(--c-brand)}
.nav-menu a:hover::after{width:60%}
.nav-menu a.is-active{color:var(--c-brand);font-weight:700}
.nav-menu a.is-active::after{width:60%}

.nav-actions{display:flex;align-items:center;gap:10px;margin-left:28px;flex-shrink:0}
.search-box{
  position:relative;display:flex;align-items:center;
  width:240px;height:38px;border-radius:var(--r-btn);
  background:#F1F4F1;border:1px solid transparent;
  transition:border-color var(--t),box-shadow var(--t),background-color var(--t);
}
.search-box:focus-within{border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(0,168,124,.15);background:#fff}
.search-box svg{width:16px;height:16px;margin:0 8px 0 12px;stroke:var(--c-muted);flex-shrink:0}
.search-box input{
  flex:1;min-width:0;height:100%;border:0;background:transparent;
  font-size:14px;outline:none;color:var(--c-ink);
}
.search-box input::placeholder{color:var(--c-muted)}
.search-kbd{
  font-family:var(--font-num);font-size:11px;font-weight:600;color:var(--c-muted);
  background:#fff;border:1px solid var(--c-line);border-radius:6px;
  padding:2px 6px;margin-right:8px;letter-spacing:.02em;
}
.icon-btn{
  width:38px;height:38px;border-radius:var(--r-btn);border:1px solid transparent;
  background:transparent;display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:color var(--t),background-color var(--t),border-color var(--t);
}
.icon-btn svg{width:20px;height:20px;stroke:var(--c-ink-soft);transition:stroke var(--t)}
.icon-btn:hover{background:var(--c-brand-100)}
.icon-btn:hover svg{stroke:var(--c-brand-700)}
.hamburger{display:none}
.hamburger svg{width:22px;height:22px}

/* 移动端抽屉 */
.offcanvas{border-left:1px solid var(--c-line)}
.offcanvas-header{padding:18px 20px;border-bottom:1px solid var(--c-line);align-items:center}
.offcanvas-title{font-size:16px;font-weight:800;color:var(--c-ink)}
.mobile-nav{display:flex;flex-direction:column}
.mobile-nav a{
  display:flex;align-items:center;justify-content:space-between;
  font-size:16px;line-height:52px;color:var(--c-ink-soft);
  border-bottom:1px solid var(--c-line);transition:color var(--t),padding-left var(--t);
}
.mobile-nav a:hover{padding-left:6px}
.mobile-nav a.is-active{color:var(--c-brand);font-weight:700}
.mobile-nav a span{font-size:13px;color:var(--c-muted)}
.offcanvas-foot{margin-top:24px;padding-bottom:16px}
.btn-close-c{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--c-line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
.btn-close-c:hover{background:var(--c-brand-100);border-color:var(--c-brand)}

/* ============ 面包屑 ============ */
.crumb-bar{background:var(--c-bg);padding:18px 0 0}
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--c-muted);flex-wrap:wrap}
.crumb a{color:var(--c-muted);transition:color var(--t)}
.crumb a:hover{color:var(--c-brand)}
.crumb .sep{color:var(--c-line)}
.crumb .current{color:var(--c-ink);font-weight:600}

/* ============ Hero ============ */
.hero{position:relative;margin-top:18px;overflow:hidden;background:var(--c-ink)}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(11,18,16,.92) 0%,rgba(11,18,16,.78) 42%,rgba(11,18,16,.35) 100%);
}
.hero-inner{position:relative;z-index:2;padding:84px 0 72px;max-width:760px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--c-lime);color:var(--c-ink);
  font-size:12.5px;font-weight:700;border-radius:999px;padding:5px 14px;margin-bottom:20px;
}
.hero h1{
  color:#fff;font-size:clamp(30px,4vw,48px);font-weight:800;line-height:1.24;
  letter-spacing:-.02em;
}
.hero .lead{
  margin-top:18px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.82);max-width:620px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero .btn-outline-c{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}
.hero .btn-outline-c:hover{background:rgba(255,255,255,.12);border-color:var(--c-brand-bright);color:#fff}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:32px;margin-top:46px;padding-top:28px;
  border-top:1px solid rgba(255,255,255,.14);
}
.hero-stats > div{min-width:110px}
.hero-stats b{
  display:block;font-family:var(--font-num);font-size:28px;font-weight:800;
  color:var(--c-brand-bright);line-height:1.1;
}
.hero-stats span{display:block;margin-top:6px;font-size:13px;color:rgba(255,255,255,.7)}

/* ============ 筛选标签 ============ */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:32px}
.chip{
  border-radius:999px;padding:8px 18px;font-size:14px;font-weight:600;
  background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-ink-soft);
  cursor:pointer;transition:background-color var(--t),color var(--t),border-color var(--t),transform var(--t);
}
.chip:hover{border-color:var(--c-brand);color:var(--c-brand-700);transform:translateY(-1px)}
.chip.is-on{background:var(--c-brand);border-color:var(--c-brand);color:#fff}
.filter-hint{margin-left:auto;font-size:13px;color:var(--c-muted)}

/* ============ 拼贴网格 ============ */
.mosaic{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  grid-auto-rows:214px;
  gap:24px;
}
.m-card{
  position:relative;overflow:hidden;border-radius:var(--r-card);
  border:1px solid var(--c-line);box-shadow:var(--sh-1);background:var(--c-brand-100);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  min-height:214px;
}
.m-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(0,168,124,.32)}
.m-card--big{grid-column:span 2;grid-row:span 2}
.m-card__media{position:absolute;inset:0}
.m-card__media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform 420ms var(--ease);
}
.m-card:hover .m-card__media img{transform:scale(1.03)}
.m-card__shade{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,18,16,.12) 0%,rgba(11,18,16,.62) 58%,rgba(11,18,16,.9) 100%);
  transition:background var(--t);
}
.m-card:hover .m-card__shade{
  background:linear-gradient(180deg,rgba(11,18,16,.26) 0%,rgba(11,18,16,.74) 58%,rgba(11,18,16,.94) 100%);
}
.m-card__body{
  position:relative;z-index:2;height:100%;display:flex;flex-direction:column;
  justify-content:flex-end;padding:24px;color:#fff;
}
.m-card__tag{
  align-self:flex-start;background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.28);border-radius:999px;
  font-size:12px;font-weight:600;padding:4px 11px;margin-bottom:12px;
  color:#fff;backdrop-filter:blur(4px);
}
.m-card__body h3{
  color:#fff;font-size:19px;font-weight:700;line-height:1.4;
}
.m-card--big .m-card__body h3{font-size:24px}
.m-card__body p{
  margin-top:8px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.78);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.m-card--big .m-card__body p{-webkit-line-clamp:3}
.m-card__foot{
  margin-top:14px;padding-top:12px;border-top:1px solid rgba(255,255,255,.2);
  display:flex;align-items:center;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.72);
}
.m-card__foot svg{width:16px;height:16px;stroke:var(--c-lime);transition:transform var(--t)}
.m-card:hover .m-card__foot svg{transform:translateX(4px)}
.m-card.is-hide{display:none}

/* ============ 步骤路线 ============ */
.section--route{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.route{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;margin-top:8px;
}
.route__node{position:relative;padding-top:38px}
.route__node::before{
  content:"";position:absolute;top:9px;left:0;width:14px;height:14px;border-radius:50%;
  background:var(--c-brand);box-shadow:0 0 0 4px var(--c-brand-100);z-index:2;
}
.route__node::after{
  content:"";position:absolute;top:15px;left:20px;right:-24px;border-top:2px dashed var(--c-line);
}
.route__node:last-child::after{display:none}
.route__num{
  font-family:var(--font-num);font-size:34px;font-weight:800;line-height:1;
  color:rgba(0,168,124,.22);letter-spacing:-.02em;
}
.route__node h3{margin-top:10px;font-size:18px;font-weight:700}
.route__node p{margin-top:10px;font-size:14.5px;color:var(--c-muted);line-height:1.75}

/* ============ 数据带 ============ */
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(0,168,124,.3)}
.stat-card b{
  display:block;font-family:var(--font-num);font-size:34px;font-weight:800;
  color:var(--c-ink);line-height:1.1;letter-spacing:-.02em;
}
.stat-card b em{font-style:normal;font-size:18px;color:var(--c-brand);margin-left:2px}
.stat-card span{display:block;margin-top:8px;font-size:14.5px;font-weight:600;color:var(--c-ink)}
.stat-card p{margin-top:6px;font-size:13.5px;color:var(--c-muted);line-height:1.7}

.split-note{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  margin-top:56px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:36px;box-shadow:var(--sh-1);
}
.split-note h3{font-size:21px;font-weight:700;margin-bottom:12px}
.split-note ul{display:flex;flex-direction:column;gap:12px;margin-top:18px}
.split-note li{display:flex;gap:10px;font-size:14.5px;color:var(--c-ink-soft);line-height:1.7}
.split-note li::before{
  content:"";flex-shrink:0;width:8px;height:8px;margin-top:9px;border-radius:2px;background:var(--c-lime);
}
.split-note__media{border-radius:var(--r-img);overflow:hidden;aspect-ratio:4/3;background:var(--c-brand-100)}
.split-note__media img{width:100%;height:100%;object-fit:cover}

/* ============ FAQ ============ */
.section--faq{background:var(--c-surface);border-top:1px solid var(--c-line)}
.faq-layout{display:grid;grid-template-columns:360px 1fr;gap:56px;align-items:start}
.faq-side h2{font-size:clamp(24px,2.6vw,32px)}
.faq-side p{margin-top:14px;font-size:15px;color:var(--c-muted)}
.faq-side .btn-outline-c{margin-top:24px}
.faq .accordion-item{
  border:0;border-bottom:1px solid var(--c-line);background:transparent;border-radius:0;
}
.faq .accordion-button{
  background:transparent;box-shadow:none;border-radius:0;
  padding:22px 48px 22px 18px;font-size:17px;font-weight:700;color:var(--c-ink);
  position:relative;transition:color var(--t),box-shadow var(--t),background-color var(--t);
}
.faq .accordion-button:focus{box-shadow:none;outline:2px solid var(--c-lime);outline-offset:-2px}
.faq .accordion-button:not(.collapsed){
  color:var(--c-brand-700);box-shadow:inset 3px 0 0 var(--c-lime);background:transparent;
}
.faq .accordion-button::after{
  content:"";position:absolute;right:18px;top:50%;width:2px;height:16px;
  background:var(--c-ink);transform:translateY(-50%);
  transition:transform var(--t),background-color var(--t);
  background-image:none;
}
.faq .accordion-button::before{
  content:"";position:absolute;right:11px;top:50%;width:16px;height:2px;
  background:var(--c-ink);transform:translateY(-50%);transition:background-color var(--t);
}
.faq .accordion-button:not(.collapsed)::after{transform:translateY(-50%) scaleY(0)}
.faq .accordion-button:not(.collapsed)::before,
.faq .accordion-button:not(.collapsed)::after{background:var(--c-brand)}
.faq .accordion-body{
  padding:0 48px 24px 18px;font-size:15px;line-height:1.85;color:var(--c-ink-soft);
}

/* ============ CTA ============ */
.cta-section{padding:88px 0 96px}
.cta-band{
  position:relative;overflow:hidden;background:var(--c-ink);border-radius:24px;
  padding:52px 48px;display:flex;align-items:center;justify-content:space-between;gap:36px;
  flex-wrap:wrap;
}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--c-brand),var(--c-lime));
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px);font-weight:700;max-width:560px}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.72);font-size:15px;max-width:560px}
.cta-band__actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.cta-band .btn-brand{background:var(--c-brand-bright);color:#06231B}
.cta-band .btn-brand:hover{background:#4be3b6;color:#06231B}
.cta-band .btn-text{color:var(--c-lime)}
.cta-band .btn-text:hover{color:#fff}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:var(--c-ink);color:#C9D6D1;padding:72px 0 28px;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--c-brand),var(--c-lime));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand strong{color:#fff;font-size:17px;font-weight:800}
.footer-desc{font-size:14px;line-height:1.8;color:#9FB1AB;max-width:340px}
.footer-contact{margin-top:18px;font-size:13.5px;line-height:2;color:#9FB1AB}
.footer-contact span{color:var(--c-lime)}
.site-footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{
  font-size:14px;color:#C9D6D1;transition:color var(--t),transform var(--t);
  display:inline-block;
}
.footer-links a:hover{color:var(--c-lime);transform:translateX(2px)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:#8A9A95;
}
.footer-meta{display:flex;gap:20px;flex-wrap:wrap}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  background:var(--c-brand);border:0;color:#fff;display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity var(--t),transform var(--t),background-color var(--t),visibility var(--t);z-index:1040;
}
.to-top.is-on{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--c-brand-700)}
.to-top svg{width:20px;height:20px;stroke:#fff}

/* ============ 响应式 ============ */
@media (max-width:1399px){
  .container{max-width:1140px}
}
@media (max-width:1199px){
  .container{max-width:960px}
  .search-box{width:180px}
  .nav-menu{gap:20px}
}
@media (max-width:991px){
  .container{max-width:100%}
  .nav-menu,.search-box{display:none}
  .hamburger{display:inline-flex}
  .nav-actions{margin-left:auto}
  .section{padding:72px 0}
  .hero-inner{padding:64px 0 56px}
  .mosaic{grid-template-columns:repeat(2,1fr);grid-auto-rows:220px}
  .m-card--big{grid-column:span 2;grid-row:span 2}
  .route{grid-template-columns:repeat(2,1fr);row-gap:40px}
  .route__node:nth-child(2)::after{display:none}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .split-note{grid-template-columns:1fr;gap:28px}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px 32px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .hero-inner{padding:52px 0 48px}
  .hero .lead{font-size:15.5px}
  .hero-actions{flex-direction:column;align-items:stretch;width:100%}
  .hero-actions .btn-brand,.hero-actions .btn-outline-c{width:100%}
  .hero-stats{gap:20px}
  .hero-stats > div{min-width:calc(50% - 10px)}
  .mosaic{grid-template-columns:1fr;grid-auto-rows:250px}
  .m-card--big{grid-column:span 1;grid-row:span 1}
  .m-card__body{padding:20px}
  .route{grid-template-columns:1fr;gap:0}
  .route::before{content:"";position:absolute;left:6px;top:24px;bottom:24px;width:2px;background:var(--c-line)}
  .route__node{padding:22px 0 22px 34px}
  .route__node::before{top:30px;left:0}
  .route__node::after{display:none}
  .stat-strip{grid-template-columns:1fr}
  .stat-card{padding:20px}
  .split-note{padding:20px}
  .filter-hint{margin-left:0;width:100%}
  .cta-section{padding:56px 0 72px}
  .cta-band{padding:32px 22px;border-radius:20px}
  .cta-band__actions{width:100%}
  .cta-band__actions .btn-brand{width:100%}
  .faq .accordion-button{font-size:16px;padding:18px 44px 18px 14px}
  .faq .accordion-body{padding:0 44px 20px 14px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:10px}
  .to-top{right:16px;bottom:16px;width:44px;height:44px}
  .brand-text em,.brand-text i{display:none}
}
@media (max-width:575px){
  .brand-text strong{font-size:16px}
  .cta-band h2{font-size:22px}
  .hero-stats b{font-size:24px}
}

/* roulang page: category4 */
:root{
  --c-brand:#00A87C;
  --c-brand-700:#00815F;
  --c-brand-100:#DFF5EC;
  --c-brand-light:#2ED3A3;
  --c-ink:#0B1210;
  --c-ink-soft:#2B3733;
  --c-muted:#63736D;
  --c-lime:#D8F24A;
  --c-bg:#F4F6F3;
  --c-surface:#FFFFFF;
  --c-line:#E2E8E3;
  --c-danger:#D9480F;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(11,18,16,.05);
  --sh-2:0 10px 24px rgba(11,18,16,.08);
  --t:180ms cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:92px;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding:0;
  background:var(--c-bg);
  color:var(--c-ink-soft);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-brand);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--c-brand-700);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-lime);outline-offset:2px;border-radius:4px;}
::selection{background:var(--c-brand-100);color:var(--c-ink);}
::-webkit-scrollbar{width:6px;height:6px;}
::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:6px;}
::-webkit-scrollbar-thumb:hover{background:rgba(0,168,124,.3);}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:1400px){
  .container{max-width:1280px;}
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:64px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:34px;
  height:34px;
  border-radius:8px;
  background:var(--c-brand);
  display:grid;
  place-items:center;
  flex-shrink:0;
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:16px;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.brand-text strong{font-weight:800;color:var(--c-ink);}
.brand-text i{
  width:1px;
  height:14px;
  background:var(--c-line);
  display:inline-block;
}
.brand-text span{font-weight:500;color:var(--c-muted);}

.nav-menu{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:auto;
}
.nav-menu a{
  position:relative;
  font-size:14.5px;
  font-weight:500;
  color:var(--c-ink-soft);
  padding:6px 0;
  white-space:nowrap;
  transition:color var(--t);
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:0;
  width:0;
  height:2px;
  background:var(--c-lime);
  border-radius:2px;
  transform:translateX(-50%);
  transition:width var(--t);
}
.nav-menu a:hover{color:var(--c-brand);}
.nav-menu a:hover::after{width:60%;}
.nav-menu a.is-active{color:var(--c-brand);font-weight:700;}
.nav-menu a.is-active::after{width:60%;}

.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.search-box{
  display:flex;
  align-items:center;
  gap:8px;
  width:240px;
  height:38px;
  padding:0 10px;
  background:#F1F4F1;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.search-box svg{width:16px;height:16px;color:var(--c-muted);flex-shrink:0;}
.search-box input{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  outline:none;
  font-size:13.5px;
  color:var(--c-ink);
}
.search-box input::placeholder{color:var(--c-muted);}
.search-box kbd{
  font-family:Inter,Barlow,system-ui,sans-serif;
  font-size:11px;
  color:var(--c-muted);
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:5px;
  padding:1px 5px;
  line-height:1.5;
}
.search-box:focus-within{
  background:#fff;
  border-color:var(--c-brand);
  box-shadow:0 0 0 3px rgba(0,168,124,.15);
}
.icon-btn{
  width:38px;
  height:38px;
  display:grid;
  place-items:center;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:#fff;
  color:var(--c-ink-soft);
  cursor:pointer;
  transition:color var(--t),border-color var(--t),background var(--t);
}
.icon-btn svg{width:20px;height:20px;}
.icon-btn:hover{color:var(--c-brand);border-color:var(--c-brand);background:var(--c-brand-100);}

.btn-c{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform var(--t),background var(--t),color var(--t),border-color var(--t),box-shadow var(--t);
}
.btn-c[disabled],.btn-c.is-disabled{opacity:.5;cursor:not-allowed;}
.btn-brand{background:var(--c-brand);color:#fff;}
.btn-brand:hover{background:var(--c-brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-brand:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:#fff;color:var(--c-ink);border-color:var(--c-line);}
.btn-ghost:hover{background:var(--c-brand-100);border-color:var(--c-brand);color:var(--c-brand-700);transform:translateY(-1px);}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--c-brand);
  padding:4px 0;
}
.btn-text svg{width:16px;height:16px;transition:transform var(--t);}
.btn-text:hover{color:var(--c-brand-700);text-decoration:underline;text-underline-offset:3px;}
.btn-text:hover svg{transform:translateX(4px);}
.btn-sm{padding:0 16px;height:38px;font-size:14px;}

.hamburger{
  display:none;
  width:40px;
  height:40px;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:#fff;
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.hamburger svg{width:20px;height:20px;color:var(--c-ink);}

/* 移动抽屉 */
.offcanvas.oc-menu{background:var(--c-surface);width:320px;}
.oc-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:16px 20px;
  border-bottom:1px solid var(--c-line);
}
.oc-links{padding:8px 0;flex:1;}
.oc-links a{
  display:block;
  padding:0 20px;
  line-height:52px;
  font-size:16px;
  color:var(--c-ink-soft);
  border-bottom:1px solid var(--c-line);
}
.oc-links a.is-active{color:var(--c-brand);font-weight:700;background:var(--c-brand-100);}
.oc-foot{padding:16px 20px;border-top:1px solid var(--c-line);}
.oc-foot .btn-c{width:100%;}

/* ============ 面包屑 ============ */
.crumbs{
  padding:22px 0 0;
  font-size:14px;
  color:var(--c-muted);
}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li::after{content:"/";color:var(--c-line);}
.crumbs li:last-child::after{display:none;}
.crumbs a{color:var(--c-muted);}
.crumbs a:hover{color:var(--c-brand);}
.crumbs li[aria-current]{color:var(--c-ink);font-weight:600;}

/* ============ 引导区 ============ */
.intro{padding:36px 0 64px;}
.intro-grid{
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:56px;
  align-items:center;
}
.badge-pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  background:var(--c-brand-100);
  color:var(--c-brand-700);
}
.badge-lime{background:var(--c-lime);color:var(--c-ink);}
.intro h1{
  font-size:clamp(30px,3.6vw,44px);
  line-height:1.24;
  letter-spacing:-.02em;
  margin:18px 0 16px;
  font-weight:800;
}
.intro-sub{
  font-size:16.5px;
  color:var(--c-muted);
  max-width:560px;
  margin-bottom:26px;
}
.intro-search{
  display:flex;
  align-items:center;
  gap:10px;
  max-width:480px;
  height:52px;
  padding:0 8px 0 16px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:12px;
  box-shadow:var(--sh-1);
  transition:border-color var(--t),box-shadow var(--t);
}
.intro-search svg{width:18px;height:18px;color:var(--c-muted);flex-shrink:0;}
.intro-search input{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  outline:none;
  font-size:15px;
  color:var(--c-ink);
}
.intro-search input::placeholder{color:var(--c-muted);}
.intro-search:focus-within{border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(0,168,124,.15);}
.intro-search .btn-c{height:38px;padding:0 18px;font-size:14px;}
.intro-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:20px;
}
.intro-tags a{
  font-size:13px;
  padding:4px 12px;
  border-radius:999px;
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-ink-soft);
  transition:color var(--t),border-color var(--t),background var(--t);
}
.intro-tags a:hover{color:var(--c-brand-700);border-color:var(--c-brand);background:var(--c-brand-100);}

.intro-media{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  box-shadow:var(--sh-2);
}
.intro-media .ratio-wrap{
  position:relative;
  width:100%;
  aspect-ratio:16/11;
  background:var(--c-brand-100);
}
.intro-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  border-radius:20px;
}
.intro-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(11,18,16,0) 45%,rgba(11,18,16,.55) 100%);
  pointer-events:none;
}
.intro-float{
  position:absolute;
  left:18px;
  bottom:18px;
  right:18px;
  display:flex;
  gap:18px;
  padding:14px 18px;
  background:rgba(255,255,255,.94);
  border-radius:14px;
  box-shadow:var(--sh-2);
  z-index:2;
}
.intro-float div{flex:1;min-width:0;}
.intro-float strong{
  display:block;
  font-family:Inter,Barlow,system-ui,sans-serif;
  font-size:22px;
  font-weight:800;
  color:var(--c-ink);
  letter-spacing:-.02em;
  line-height:1.2;
}
.intro-float em{
  font-style:normal;
  font-size:12.5px;
  color:var(--c-muted);
  line-height:1.5;
}

/* ============ 文档双栏 ============ */
.doc-section{padding:0 0 88px;}
.doc-layout{
  display:grid;
  grid-template-columns:220px minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.doc-toc{
  position:sticky;
  top:88px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:18px 0;
  box-shadow:var(--sh-1);
}
.toc-title{
  padding:0 18px 10px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--c-muted);
  text-transform:none;
  border-bottom:1px solid var(--c-line);
  margin-bottom:8px;
}
.doc-toc ul{display:block;}
.doc-toc a{
  display:block;
  font-size:15px;
  color:var(--c-ink-soft);
  padding:9px 18px;
  border-left:3px solid transparent;
  transition:color var(--t),background var(--t),border-color var(--t);
}
.doc-toc a:hover{color:var(--c-brand);background:var(--c-brand-100);}
.doc-toc a.is-active{
  color:var(--c-brand-700);
  font-weight:600;
  border-left-color:var(--c-lime);
  background:var(--c-brand-100);
}
.toc-help{
  margin:14px 18px 4px;
  padding-top:14px;
  border-top:1px solid var(--c-line);
  font-size:13px;
  color:var(--c-muted);
  line-height:1.7;
}

.doc-main{min-width:0;}
.doc-group{margin-bottom:44px;}
.doc-group:last-child{margin-bottom:0;}
.group-head{margin-bottom:16px;}
.group-head h2{
  font-size:clamp(21px,2.1vw,26px);
  line-height:1.35;
  letter-spacing:-.01em;
}
.group-head p{
  margin-top:8px;
  font-size:14.5px;
  color:var(--c-muted);
  max-width:720px;
}

.row-list{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.row-item + .row-item{border-top:1px solid var(--c-line);}
.row-item a{
  display:flex;
  align-items:center;
  gap:16px;
  padding:18px 22px;
  min-height:72px;
  color:var(--c-ink-soft);
  transition:background var(--t);
}
.row-item a:hover{background:var(--c-brand-100);}
.row-icon{
  width:36px;
  height:36px;
  flex:0 0 36px;
  display:grid;
  place-items:center;
  border-radius:10px;
  background:var(--c-brand-100);
  color:var(--c-brand-700);
  transition:background var(--t),color var(--t);
}
.row-icon svg{width:20px;height:20px;}
.row-item a:hover .row-icon{background:#fff;color:var(--c-brand);}
.row-text{flex:1;min-width:0;display:block;}
.row-text strong{
  display:block;
  font-size:15.5px;
  font-weight:700;
  color:var(--c-ink);
  line-height:1.5;
  transition:color var(--t);
}
.row-item a:hover .row-text strong{color:var(--c-brand-700);}
.row-text em{
  display:block;
  font-style:normal;
  font-size:13.5px;
  color:var(--c-muted);
  line-height:1.65;
  margin-top:2px;
}
.row-arrow{
  flex-shrink:0;
  color:var(--c-muted);
  transition:transform var(--t),color var(--t);
  display:grid;
  place-items:center;
}
.row-arrow svg{width:18px;height:18px;}
.row-item a:hover .row-arrow{transform:translateX(4px);color:var(--c-brand);}

/* ============ 支持通道 ============ */
.support-section{padding:0 0 88px;}
.support-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.support-item{
  padding:28px 26px;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.support-item + .support-item{border-left:1px solid var(--c-line);}
.support-item .s-icon{
  width:44px;
  height:44px;
  border-radius:12px;
  background:var(--c-brand-100);
  color:var(--c-brand-700);
  display:grid;
  place-items:center;
}
.support-item .s-icon svg{width:24px;height:24px;}
.support-item h3{font-size:18px;font-weight:700;line-height:1.4;}
.support-item p{font-size:14px;color:var(--c-muted);line-height:1.75;}
.support-item .s-meta{
  margin-top:auto;
  font-size:13px;
  color:var(--c-brand-700);
  font-weight:600;
}

/* ============ FAQ ============ */
.faq-section{padding:0 0 88px;}
.sec-head{margin-bottom:28px;}
.sec-head h2{
  font-size:clamp(24px,2.6vw,32px);
  line-height:1.3;
  letter-spacing:-.01em;
}
.sec-head p{margin-top:10px;font-size:15px;color:var(--c-muted);max-width:680px;}

.faq-wrap{
  display:grid;
  grid-template-columns:1fr;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:8px 28px;
  box-shadow:var(--sh-1);
}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:0;}
.faq-btn{
  position:relative;
  width:100%;
  background:none;
  border:0;
  text-align:left;
  padding:20px 0 20px 16px;
  display:flex;
  align-items:center;
  gap:14px;
  font-size:17px;
  font-weight:600;
  color:var(--c-ink);
  cursor:pointer;
  line-height:1.5;
  transition:color var(--t);
}
.faq-btn::before{
  content:"";
  position:absolute;
  left:0;
  top:16px;
  bottom:16px;
  width:3px;
  border-radius:3px;
  background:transparent;
  transition:background var(--t);
}
.faq-btn .num{
  font-family:Inter,Barlow,system-ui,sans-serif;
  font-size:14px;
  font-weight:700;
  color:var(--c-brand);
  flex-shrink:0;
  min-width:24px;
}
.faq-btn span.q-text{flex:1;min-width:0;}
.faq-sign{
  position:relative;
  width:18px;
  height:18px;
  flex-shrink:0;
}
.faq-sign::before,.faq-sign::after{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  margin-top:-0.75px;
  width:18px;
  height:1.5px;
  background:var(--c-muted);
  border-radius:2px;
  transition:transform var(--t),background var(--t);
}
.faq-sign::after{transform:rotate(90deg);}
.faq-btn[aria-expanded="true"]{color:var(--c-brand);}
.faq-btn[aria-expanded="true"]::before{background:var(--c-lime);}
.faq-btn[aria-expanded="true"] .faq-sign::before{background:var(--c-brand);}
.faq-btn[aria-expanded="true"] .faq-sign::after{transform:rotate(0);background:var(--c-brand);}
.faq-body{padding:0 16px 20px 54px;font-size:15px;color:var(--c-ink-soft);line-height:1.85;}
.faq-body p + p{margin-top:10px;}

/* ============ CTA ============ */
.cta-section{padding:0 0 96px;}
.cta-box{
  position:relative;
  overflow:hidden;
  background:var(--c-ink);
  border-radius:24px;
  padding:52px 56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
}
.cta-box::before{
  content:"";
  position:absolute;
  right:-60px;
  top:-80px;
  width:420px;
  height:420px;
  border-radius:50%;
  border:1.5px solid rgba(216,242,74,.16);
  pointer-events:none;
}
.cta-box::after{
  content:"";
  position:absolute;
  right:40px;
  bottom:-140px;
  width:320px;
  height:320px;
  border-radius:50%;
  border:1.5px solid rgba(46,211,163,.14);
  pointer-events:none;
}
.cta-left{position:relative;z-index:2;max-width:640px;}
.cta-left h2{
  color:#fff;
  font-size:clamp(23px,2.4vw,30px);
  line-height:1.32;
  letter-spacing:-.01em;
}
.cta-left p{
  margin-top:12px;
  color:#C9D6D1;
  font-size:15px;
  line-height:1.8;
}
.cta-actions{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  gap:22px;
  flex-shrink:0;
}
.btn-onink{
  background:var(--c-brand-light);
  color:#04231B;
  font-weight:700;
}
.btn-onink:hover{background:#57E3BB;color:#04231B;transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,0,0,.28);}
.link-onink{
  color:#C9D6D1;
  font-size:15px;
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.link-onink:hover{color:var(--c-lime);}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--c-ink);
  color:#C9D6D1;
  padding:64px 0 26px;
  font-size:14px;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:2px;
  background:linear-gradient(90deg,var(--c-brand) 0%,var(--c-lime) 100%);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.footer-brand .brand-mark{width:32px;height:32px;border-radius:8px;}
.footer-brand strong{
  color:#fff;
  font-size:16.5px;
  font-weight:800;
  letter-spacing:-.01em;
}
.footer-desc{
  color:#9FB0AA;
  font-size:13.5px;
  line-height:1.8;
  max-width:320px;
}
.footer-contact{
  margin-top:16px;
  font-size:13.5px;
  line-height:1.9;
  color:#9FB0AA;
}
.footer-contact span{color:var(--c-brand-light);}
.site-footer h4{
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-links li{margin-bottom:10px;}
.footer-links a{
  color:#C9D6D1;
  font-size:14px;
  display:inline-block;
  transition:color .15s ease,transform .15s ease;
}
.footer-links a:hover{color:var(--c-lime);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:20px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:#8A9A94;
}
.footer-meta{display:flex;flex-wrap:wrap;gap:18px;}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;
  right:24px;
  bottom:24px;
  width:48px;
  height:48px;
  border-radius:50%;
  border:0;
  background:var(--c-brand);
  color:#fff;
  display:grid;
  place-items:center;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity var(--t),visibility var(--t),transform var(--t),background var(--t);
  z-index:1040;
  box-shadow:var(--sh-2);
}
.to-top svg{width:20px;height:20px;}
.to-top.is-on{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--c-brand-700);}

/* ============ 响应式 ============ */
@media (max-width:1399px){
  .container{max-width:1140px;}
}
@media (max-width:1199px){
  .container{max-width:960px;}
  .nav-menu{gap:20px;}
  .nav-menu a{font-size:14px;}
  .search-box{width:180px;}
  .doc-layout{gap:32px;}
}
@media (max-width:991px){
  .nav-menu{display:none;}
  .search-box{display:none;}
  .hamburger{display:flex;}
  .header-actions{gap:10px;}
  .header-inner{height:60px;}
  .intro{padding:28px 0 48px;}
  .intro-grid{grid-template-columns:1fr;gap:32px;}
  .intro-sub{max-width:none;}
  .doc-section{padding-bottom:64px;}
  .doc-layout{grid-template-columns:1fr;gap:24px;}
  .doc-toc{
    position:sticky;
    top:60px;
    z-index:20;
    padding:0;
    border-radius:14px;
    background:rgba(255,255,255,.96);
    backdrop-filter:blur(10px);
  }
  .toc-title{display:none;}
  .doc-toc ul{
    display:flex;
    gap:8px;
    overflow-x:auto;
    padding:10px 12px;
    -webkit-overflow-scrolling:touch;
  }
  .doc-toc a{
    white-space:nowrap;
    padding:7px 14px;
    border-left:0;
    border-radius:999px;
    border:1px solid var(--c-line);
    background:#fff;
    font-size:14px;
  }
  .doc-toc a.is-active{border-color:var(--c-brand);background:var(--c-brand-100);}
  .toc-help{display:none;}
  .support-section{padding-bottom:64px;}
  .support-grid{grid-template-columns:1fr;}
  .support-item + .support-item{border-left:0;border-top:1px solid var(--c-line);}
  .faq-section{padding-bottom:64px;}
  .cta-section{padding-bottom:72px;}
  .cta-box{
    flex-direction:column;
    align-items:flex-start;
    padding:36px 28px;
    gap:26px;
  }
  .cta-actions{flex-wrap:wrap;gap:18px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .brand-text span,.brand-text i{display:none;}
  .brand-text strong{font-size:15.5px;}
  .intro h1{font-size:clamp(26px,7vw,32px);}
  .intro-media .ratio-wrap{aspect-ratio:16/10;}
  .intro-float{position:static;margin-top:12px;background:#fff;box-shadow:none;border:1px solid var(--c-line);}
  .intro-media::after{display:none;}
  .intro-float strong{font-size:20px;}
  .doc-section{padding-bottom:56px;}
  .row-item a{padding:16px;gap:12px;min-height:66px;}
  .row-text strong{font-size:15px;}
  .row-text em{font-size:13px;}
  .faq-wrap{padding:4px 18px;}
  .faq-btn{font-size:16px;padding:18px 0 18px 14px;}
  .faq-body{padding:0 14px 18px 46px;font-size:14.5px;}
  .cta-box{padding:28px 20px;border-radius:20px;}
  .cta-section{padding-bottom:56px;}
  .btn-c{width:auto;}
  .cta-actions{width:100%;}
  .cta-actions .btn-c{width:100%;}
  .cta-actions .link-onink{justify-content:center;width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .to-top{right:16px;bottom:16px;width:44px;height:44px;}
}
@media (max-width:575px){
  .container{padding:0 16px;}
  .header-inner{gap:12px;}
  .icon-btn{display:none;}
  .intro-search{height:48px;}
  .intro-tags{gap:6px;}
  .support-item{padding:22px 20px;}
  .sec-head h2{font-size:22px;}
}