/* roulang page: index */
:root{
  --c-primary:#0F6E63;
  --c-primary-deep:#0A4A43;
  --c-primary-soft:#E4F1EE;
  --c-accent:#F2A93B;
  --c-coral:#FF7A59;
  --c-bg:#FAF8F4;
  --c-surface:#FFFFFF;
  --c-ink:#12211F;
  --c-ink-2:#4A5A57;
  --c-line:#E6E1D8;
  --c-footer:#0A211E;
  --grad-main:linear-gradient(120deg,#0F6E63,#1B9482);
  --grad-deep:linear-gradient(120deg,#0F6E63,#0A4A43);
  --sh-1:0 1px 2px rgba(18,33,31,.04), 0 8px 24px -12px rgba(18,33,31,.12);
  --sh-2:0 2px 6px rgba(18,33,31,.06), 0 22px 44px -18px rgba(18,33,31,.24);
  --r-xl:28px;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--c-bg);
  color:var(--c-ink);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 40px;}}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(250,248,244,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.88);
  border-bottom-color:var(--c-line);
  box-shadow:0 6px 24px -18px rgba(18,33,31,.35);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.logo{
  display:inline-flex;align-items:center;gap:9px;
  font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--c-ink);
  white-space:nowrap;
}
.logo-dot{width:7px;height:7px;border-radius:50%;background:var(--c-primary);flex:none;position:relative;}
.logo-dot::after{content:"";position:absolute;right:-5px;top:2.5px;width:7px;height:2px;border-radius:2px;background:var(--c-accent);}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-link{
  position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--c-ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--c-ink);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border:1px solid var(--c-line);background:var(--c-surface);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .2s ease,opacity .2s ease;}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-active span:nth-child(2){opacity:0;}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-panel{
  position:fixed;left:0;right:0;top:72px;bottom:0;z-index:55;
  background:var(--c-bg);padding:20px 20px 40px;
  display:flex;flex-direction:column;
  opacity:0;transform:translateY(-10px);pointer-events:none;overflow-y:auto;
  transition:opacity .2s ease,transform .2s ease;
}
.mobile-panel.is-open{opacity:1;transform:none;pointer-events:auto;}
.mobile-panel .m-link{font-size:18px;font-weight:600;padding:18px 2px;border-bottom:1px solid var(--c-line);color:var(--c-ink);}
.mobile-panel .m-link.active{color:var(--c-primary);}
.mobile-panel .btn{margin-top:28px;}
@media (max-width:1024px){
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;}
}
@media (min-width:1025px){.mobile-panel{display:none;}}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:15px 30px;border-radius:999px;font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{background:var(--grad-main);color:#fff;box-shadow:0 12px 26px -14px rgba(15,110,99,.85);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 34px -16px rgba(15,110,99,.9);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary);background:transparent;}
.btn-ghost:hover{background:rgba(15,110,99,.06);transform:translateY(-2px);}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn-light{background:#fff;color:var(--c-primary-deep);}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 16px 30px -16px rgba(0,0,0,.45);}
.btn-outline-light{border-color:rgba(255,255,255,.5);color:#fff;background:transparent;}
.btn-outline-light:hover{background:rgba(255,255,255,.14);transform:translateY(-2px);}

/* ---------- Sections ---------- */
.section{padding:72px 0;}
@media (min-width:1024px){.section{padding:112px 0;}}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{max-width:760px;margin:0 auto 48px;text-align:center;}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:48px;}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--c-primary);margin-bottom:14px;}
.eyebrow-light{color:#8FD6CA;}
.sec-title{font-size:clamp(1.45rem,2.6vw,1.95rem);font-weight:700;line-height:1.35;letter-spacing:-.015em;}
.sec-desc{margin-top:14px;font-size:16px;color:var(--c-ink-2);line-height:1.85;}
.link-arrow{font-size:15px;font-weight:600;color:var(--c-primary);}
.link-arrow:hover{color:var(--c-primary-deep);}

/* ---------- Hero ---------- */
.hero{position:relative;padding:72px 0 88px;overflow:hidden;}
@media (min-width:1024px){.hero{padding:96px 0 112px;}}
.hero::before{
  content:"";position:absolute;left:-14%;top:-22%;width:62%;height:78%;pointer-events:none;
  background:radial-gradient(circle,rgba(15,110,99,.10),transparent 68%);
}
.hero::after{
  content:"";position:absolute;right:-12%;bottom:-26%;width:58%;height:74%;pointer-events:none;
  background:radial-gradient(circle,rgba(242,169,59,.09),transparent 68%);
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1fr;gap:48px;align-items:center;
}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:1.6fr 1fr;gap:56px;}
}
.hero h1{
  font-size:clamp(1.85rem,4.6vw,3.1rem);
  font-weight:800;line-height:1.25;letter-spacing:-.02em;margin-bottom:20px;
}
.hero-sub{font-size:17px;color:var(--c-ink-2);line-height:1.9;max-width:56ch;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px;}
.badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 16px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:13px;font-weight:600;
}
.badge b{font-size:17px;font-weight:700;font-variant-numeric:tabular-nums;line-height:1;}
.badge small{font-size:12px;font-weight:500;color:var(--c-ink-2);}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:none;}
.hero-visual{position:relative;}
.hero-img{
  border-radius:var(--r-xl);overflow:hidden;aspect-ratio:16/11;
  background:rgba(230,225,216,.5);box-shadow:var(--sh-1);
}
.hero-img img{width:100%;height:100%;object-fit:cover;}
.float-card{
  position:absolute;right:0;bottom:-26px;
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:14px 18px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;gap:2px;min-width:186px;
}
@media (min-width:1024px){.float-card{right:-18px;}}
.float-label{font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--c-primary);}
.float-card strong{font-size:15px;font-weight:700;color:var(--c-ink);}
.float-note{font-size:12px;color:var(--c-ink-2);}

/* ---------- Timeline ---------- */
.timeline{position:relative;max-width:980px;margin:0 auto;}
.timeline::before{
  content:"";position:absolute;left:50%;top:6px;bottom:6px;width:2px;
  background:var(--c-line);transform:translateX(-1px);
}
.tl-item{position:relative;width:calc(50% - 36px);padding-bottom:44px;}
.tl-item:nth-child(odd){margin-right:auto;text-align:right;}
.tl-item:nth-child(even){margin-left:auto;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;top:8px;width:14px;height:14px;border-radius:50%;
  background:var(--c-primary);box-shadow:0 0 0 4px var(--c-bg);
}
.tl-item:nth-child(odd) .tl-dot{right:-43px;}
.tl-item:nth-child(even) .tl-dot{left:-43px;}
.tl-item.is-active .tl-dot{background:var(--c-accent);box-shadow:0 0 0 4px rgba(242,169,59,.22);}
.tl-time{
  display:block;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--c-primary);margin-bottom:8px;font-variant-numeric:tabular-nums;
}
.tl-title{font-size:18px;font-weight:700;line-height:1.5;margin-bottom:8px;}
.tl-desc{font-size:15px;color:var(--c-ink-2);line-height:1.85;}
.tl-tag{
  display:inline-block;margin-top:12px;padding:4px 12px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:12px;font-weight:600;
}
@media (max-width:900px){
  .timeline::before{left:7px;transform:none;}
  .tl-item{width:100%;margin:0 !important;text-align:left !important;padding-left:36px;padding-right:0;padding-bottom:36px;}
  .tl-item:nth-child(odd) .tl-dot,.tl-item:nth-child(even) .tl-dot{left:0;right:auto;}
}

/* ---------- Highlight cards ---------- */
.highlight-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:900px){
  .highlight-grid{grid-template-columns:1.12fr 1fr;grid-template-rows:auto auto;}
  .hl-card--lead{grid-row:span 2;}
}
.hl-card{
  display:flex;flex-direction:column;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.hl-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(15,110,99,.3);}
.hl-media{aspect-ratio:16/10;overflow:hidden;background:rgba(230,225,216,.45);}
.hl-card--lead .hl-media{aspect-ratio:16/11;}
.hl-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.hl-card:hover .hl-media img{transform:scale(1.03);}
.hl-body{padding:24px 26px 28px;display:flex;flex-direction:column;gap:10px;flex:1;}
.hl-body h3{font-size:19px;font-weight:700;line-height:1.45;}
.hl-body p{font-size:15px;color:var(--c-ink-2);line-height:1.85;}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;
  border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:600;align-self:flex-start;
}

/* ---------- Plans ---------- */
.plan-grid{display:grid;grid-template-columns:1fr;gap:24px;align-items:stretch;}
@media (min-width:860px){.plan-grid{grid-template-columns:repeat(3,1fr);gap:22px;}}
.plan{
  position:relative;display:flex;flex-direction:column;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:32px 26px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,background-color .22s ease;
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.plan--featured{
  border:2px solid transparent;
  background:linear-gradient(#fff,#fff) padding-box,var(--grad-main) border-box;
  box-shadow:var(--sh-2);padding:40px 28px;
}
@media (min-width:860px){
  .plan--featured{transform:scale(1.035);}
  .plan--featured:hover{transform:scale(1.035) translateY(-4px);}
}
.plan-badge{
  position:absolute;top:-14px;left:50%;transform:translateX(-50%);
  padding:6px 18px;border-radius:999px;background:var(--grad-main);color:#fff;
  font-size:12px;font-weight:600;letter-spacing:.06em;white-space:nowrap;
  box-shadow:0 10px 20px -12px rgba(15,110,99,.9);
}
.plan-name{font-size:19px;font-weight:700;line-height:1.4;}
.plan-sub{margin-top:8px;font-size:14px;color:var(--c-ink-2);line-height:1.8;min-height:50px;}
.plan-list{margin:24px 0 28px;display:flex;flex-direction:column;border-top:1px solid var(--c-line);}
.plan-list li{
  display:flex;align-items:center;gap:10px;min-height:44px;
  font-size:15px;color:var(--c-ink-2);border-bottom:1px solid var(--c-line);
}
.plan-list .ico{
  width:16px;height:16px;flex:none;border-radius:50%;
  background:var(--c-primary-soft);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:10px;font-weight:700;line-height:1;
}
.plan .btn{margin-top:auto;width:100%;}

/* ---------- Stats band ---------- */
.stats-band{
  background:linear-gradient(140deg,#0A211E 0%,#0F4A42 100%);
  border-radius:32px;padding:48px 32px;color:#E8F1EF;
  display:grid;grid-template-columns:1fr;gap:40px;align-items:center;
  position:relative;overflow:hidden;
}
@media (min-width:900px){.stats-band{padding:56px 56px;grid-template-columns:1.05fr 1fr;gap:56px;}}
.stats-band::after{
  content:"";position:absolute;right:-8%;top:-30%;width:48%;height:120%;
  background:radial-gradient(circle,rgba(242,169,59,.16),transparent 66%);pointer-events:none;
}
.stats-band h2{font-size:clamp(1.35rem,2.3vw,1.75rem);font-weight:700;line-height:1.4;color:#fff;position:relative;z-index:1;}
.stats-band p{margin-top:14px;font-size:15px;line-height:1.9;color:rgba(232,241,239,.78);position:relative;z-index:1;}
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;position:relative;z-index:1;}
.stat{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.13);
  border-radius:var(--r-md);padding:20px 20px 18px;
  transition:background-color .2s ease,border-color .2s ease,transform .2s ease;
}
.stat:hover{background:rgba(255,255,255,.1);border-color:rgba(242,169,59,.4);transform:translateY(-3px);}
.stat b{display:block;font-size:32px;font-weight:700;line-height:1.1;color:#fff;font-variant-numeric:tabular-nums;}
.stat span{display:block;margin-top:6px;font-size:13px;color:rgba(232,241,239,.75);}

/* ---------- News ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);}}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(15,110,99,.3);}
.news-media{display:block;aspect-ratio:16/10;overflow:hidden;background:rgba(230,225,216,.4);}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-media img{transform:scale(1.03);}
.news-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.news-meta time{font-size:12px;color:var(--c-ink-2);font-variant-numeric:tabular-nums;}
.news-title{font-size:17px;font-weight:700;line-height:1.6;}
.news-title a:hover{color:var(--c-primary);}
.news-excerpt{
  font-size:14px;color:var(--c-ink-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-more{margin-top:auto;font-size:14px;font-weight:600;color:var(--c-primary);}
.news-more:hover{color:var(--c-primary-deep);}
.empty-state{
  grid-column:1 / -1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:10px;padding:64px 24px;text-align:center;
  background:var(--c-surface);border:1px dashed var(--c-line);border-radius:var(--r-lg);
}
.empty-icon{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--c-line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--c-ink-2);font-size:18px;
}
.empty-title{font-size:16px;font-weight:600;color:var(--c-ink);}
.empty-note{font-size:14px;color:var(--c-ink-2);}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;margin:0 auto;border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:24px;padding:22px 0;font-size:16px;font-weight:600;line-height:1.6;
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary);}
.faq-item[open] summary{color:var(--c-primary);}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--c-line);color:var(--c-ink-2);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;line-height:1;font-weight:400;
  transition:transform .22s ease,color .22s ease,border-color .22s ease,background-color .22s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);color:var(--c-primary);border-color:rgba(15,110,99,.5);background:var(--c-primary-soft);}
.faq-answer{padding:0 56px 24px 0;font-size:15px;color:var(--c-ink-2);line-height:1.9;max-width:74ch;}
@media (max-width:640px){.faq-answer{padding-right:0;}}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  background:var(--grad-deep);border-radius:32px;
  padding:48px 28px;display:grid;grid-template-columns:1fr;gap:32px;align-items:center;
  color:#fff;
}
@media (min-width:900px){.cta-panel{padding:64px 56px;grid-template-columns:1.15fr .85fr;gap:48px;}}
.cta-panel::before{
  content:"";position:absolute;left:-6%;top:-40%;width:46%;height:160%;
  background:radial-gradient(circle,rgba(255,255,255,.12),transparent 65%);pointer-events:none;
}
.cta-panel h2{position:relative;z-index:1;font-size:clamp(1.4rem,2.4vw,1.9rem);font-weight:700;line-height:1.4;}
.cta-panel p{position:relative;z-index:1;margin-top:14px;font-size:15px;line-height:1.9;color:rgba(255,255,255,.82);max-width:46ch;}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:14px;}
@media (min-width:900px){.cta-actions{justify-content:flex-end;}}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-footer);color:#E8F1EF;padding:64px 0 32px;margin-top:16px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:40px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:40px;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;}}
.footer-logo{display:inline-flex;align-items:center;gap:9px;font-size:18px;font-weight:700;color:#fff;}
.footer-logo .logo-dot{background:#4FC3B0;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.9;color:rgba(232,241,239,.7);max-width:40ch;}
.footer-col h3{font-size:14px;font-weight:700;letter-spacing:.06em;color:#fff;margin-bottom:18px;}
.footer-col li+li{margin-top:12px;}
.footer-col a{font-size:14px;color:rgba(232,241,239,.72);}
.footer-col a:hover{color:var(--c-accent);}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
}
.footer-bottom p{font-size:13px;color:rgba(232,241,239,.55);}

/* roulang page: article */
:root{
  --c-primary:#0F6E63;
  --c-primary-mid:#1B9482;
  --c-primary-deep:#0A4A43;
  --c-primary-soft:#E4F1EE;
  --c-accent:#F2A93B;
  --c-coral:#FF7A59;
  --c-bg:#FAF8F4;
  --c-surface:#FFFFFF;
  --c-ink:#12211F;
  --c-ink-2:#4A5A57;
  --c-line:#E6E1D8;
  --c-footer:#0A211E;
  --sh-1:0 1px 2px rgba(18,33,31,.04), 0 8px 24px -12px rgba(18,33,31,.12);
  --sh-2:0 2px 4px rgba(18,33,31,.05), 0 18px 40px -18px rgba(18,33,31,.22);
  --r-lg:24px;
  --r-md:16px;
  --grad-main:linear-gradient(120deg,#0F6E63,#1B9482);
}
*,*::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);
  font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei","Hiragino Sans GB",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;border-radius:var(--r-lg)}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{line-height:1.3;margin:0;color:var(--c-ink)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 40px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(250,248,244,.86);
  border-bottom:1px solid transparent;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
  backdrop-filter:blur(12px);
}
.site-header.is-scrolled{background:rgba(255,255,255,.9);border-bottom-color:var(--c-line);box-shadow:0 8px 28px -22px rgba(18,33,31,.5)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.logo{display:inline-flex;align-items:center;gap:8px;font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--c-ink);white-space:nowrap}
.logo-dot{width:8px;height:8px;border-radius:999px;background:var(--grad-main);display:inline-block;transform:translateY(-1px)}
.nav-links{display:none;align-items:center;gap:32px}
.nav-link{position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;transition:color .2s ease}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.nav-link:hover{color:var(--c-ink)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--c-ink);font-weight:600}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;padding:0 10px;border-radius:12px;border:1px solid var(--c-line);background:#fff;cursor:pointer;transition:border-color .2s ease}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .22s ease,opacity .22s ease}
.nav-toggle:hover{border-color:var(--c-primary)}
@media(min-width:1024px){
  .nav-links{display:flex}
  .nav-toggle{display:none}
}
/* mobile drawer */
.mobile-panel{
  position:fixed;inset:72px 0 0 0;z-index:55;
  background:rgba(250,248,244,.98);
  backdrop-filter:blur(10px);
  padding:28px 20px 40px;
  display:flex;flex-direction:column;
  gap:0;
  transform:translateY(-8px);
  opacity:0;pointer-events:none;
  transition:opacity .22s ease,transform .22s ease;
  overflow-y:auto;
}
.mobile-panel.is-open{opacity:1;transform:translateY(0);pointer-events:auto}
.mobile-panel a.m-link{display:block;font-size:20px;font-weight:600;padding:18px 4px;border-bottom:1px solid var(--c-line);color:var(--c-ink)}
.mobile-panel a.m-link.active{color:var(--c-primary)}
.mobile-panel .m-cta{margin-top:28px}
@media(min-width:1024px){.mobile-panel{display:none}}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;font-weight:600;font-size:15px;line-height:1;padding:14px 26px;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease}
.btn-primary{background:var(--grad-main);color:#fff;box-shadow:0 10px 26px -14px rgba(15,110,99,.9)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px -14px rgba(15,110,99,.95)}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:rgba(15,110,99,.45)}
.btn-ghost:hover{background:rgba(15,110,99,.07);transform:translateY(-2px)}
.btn-sm{padding:11px 20px;font-size:14px}
.btn-white{background:#fff;color:var(--c-primary-deep)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 14px 30px -14px rgba(0,0,0,.35)}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:28px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-2)}
.crumb a{transition:color .2s ease}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:rgba(74,90,87,.45)}
.crumb .current{color:var(--c-ink);font-weight:600}

/* ---------- article head ---------- */
.article-head{padding:24px 0 0}
.article-tagline{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--c-primary);background:var(--c-primary-soft);border-radius:999px;padding:6px 14px}
.article-head h1{font-size:clamp(1.6rem,3.4vw,2.5rem);font-weight:800;letter-spacing:-.02em;margin:18px 0 0;max-width:900px}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:20px;padding-bottom:22px;border-bottom:1px solid var(--c-line);font-size:13px;color:var(--c-ink-2)}
.meta-row .dot{width:5px;height:5px;border-radius:999px;background:var(--c-accent);display:inline-block}
.meta-chip{display:inline-flex;align-items:center;gap:7px}

/* ---------- layout ---------- */
.article-layout{display:grid;grid-template-columns:1fr;gap:48px;padding:40px 0 88px}
@media(min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:72px}
}
.reading{max-width:760px}
.hero-media{margin:0 0 36px;border-radius:28px;overflow:hidden;background:rgba(230,225,216,.35)}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:28px}

/* ---------- article body ---------- */
.article-body{font-size:17px;line-height:1.85;color:var(--c-ink-2)}
.article-body > * + *{margin-top:1.2em}
.article-body h2{
  position:relative;font-size:1.6rem;font-weight:700;color:var(--c-ink);
  margin-top:2.4em;padding-left:18px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:4px;background:var(--grad-main)}
.article-body h3{font-size:1.25rem;font-weight:600;color:var(--c-ink);margin-top:1.9em}
.article-body h4{font-size:1.05rem;font-weight:600;color:var(--c-ink);margin-top:1.6em}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(15,110,99,.35);transition:border-color .2s ease,color .2s ease}
.article-body a:hover{color:var(--c-primary-deep);border-bottom-color:var(--c-primary-deep)}
.article-body strong{color:var(--c-ink);font-weight:700}
.article-body ul,.article-body ol{padding-left:1.3em}
.article-body ul{list-style:none;padding-left:0}
.article-body ul li{position:relative;padding-left:24px;margin-top:.6em}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:8px;height:8px;border-radius:999px;background:var(--c-primary-soft);border:2px solid var(--c-primary)}
.article-body ol{list-style:decimal}
.article-body ol li{margin-top:.6em}
.article-body blockquote{
  margin:1.8em 0;padding:20px 24px;background:var(--c-primary-soft);
  border-left:4px solid var(--c-primary);border-radius:0 16px 16px 0;color:var(--c-ink);
}
.article-body blockquote p{margin:0}
.article-body img{border-radius:20px;margin:1.8em 0;width:100%;height:auto}
.article-body figure{margin:1.8em 0}
.article-body figcaption{font-size:13px;color:var(--c-ink-2);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:1.8em 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:12px 14px;text-align:left}
.article-body th{background:var(--c-primary-soft);color:var(--c-ink);font-weight:600}
.article-body code{background:rgba(15,110,99,.08);border-radius:6px;padding:2px 7px;font-size:.92em;color:var(--c-primary-deep)}
.article-body pre{background:#0F2B27;color:#E7F3F1;padding:20px 22px;border-radius:16px;overflow-x:auto;font-size:14px;line-height:1.7}
.article-body pre code{background:transparent;color:inherit;padding:0}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:2.4em 0}

/* ---------- sidebar ---------- */
.article-aside{display:none}
@media(min-width:1280px){.article-aside{display:block}}
.sticky-box{position:sticky;top:104px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);padding:24px 22px;box-shadow:var(--sh-1)}
.sticky-box h3{font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--c-ink-2)}
.toc{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.toc a{font-size:14px;color:var(--c-ink-2);line-height:1.6;padding-left:12px;border-left:2px solid var(--c-line);transition:color .2s ease,border-color .2s ease}
.toc a:hover,.toc a.active{color:var(--c-primary);border-left-color:var(--c-primary)}
.sticky-cta{margin-top:24px;padding-top:20px;border-top:1px solid var(--c-line)}
.sticky-cta p{font-size:13px;color:var(--c-ink-2);margin-bottom:12px}

/* ---------- tags / nav / related ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:28px;border-top:1px solid var(--c-line)}
.tag-chip{font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--c-primary);background:var(--c-primary-soft);border-radius:999px;padding:7px 15px;transition:background-color .2s ease,color .2s ease,transform .2s ease}
.tag-chip:hover{background:var(--c-primary);color:#fff;transform:translateY(-2px)}
.post-nav{display:grid;grid-template-columns:1fr;gap:16px;margin-top:32px}
@media(min-width:768px){.post-nav{grid-template-columns:1fr 1fr}}
.post-nav-card{display:block;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);padding:18px 20px;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.post-nav-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(15,110,99,.3)}
.post-nav-card span{font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--c-ink-2)}
.post-nav-card strong{display:block;margin-top:8px;font-size:15px;font-weight:600;color:var(--c-ink);line-height:1.6}

.section{padding:0 0 88px}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-head h2{font-size:1.75rem;font-weight:700;letter-spacing:-.01em}
.section-head p{font-size:15px;color:var(--c-ink-2);margin-top:8px;max-width:620px}
.cards{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:640px){.cards{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.cards{grid-template-columns:repeat(3,1fr)}}
.card{display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(15,110,99,.3)}
.card-media{overflow:hidden;background:rgba(230,225,216,.4)}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .35s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:22px 22px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:17px;font-weight:600;line-height:1.55}
.card-body p{font-size:14px;color:var(--c-ink-2);line-height:1.75}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--c-ink-2);letter-spacing:.04em}
.card-link{color:var(--c-primary);font-weight:600}
.pill{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary);font-size:12px;font-weight:600;letter-spacing:.06em}

/* ---------- empty state ---------- */
.empty-state{background:var(--c-surface);border:1px dashed var(--c-line);border-radius:var(--r-lg);padding:56px 28px;text-align:center}
.empty-state .icon{width:56px;height:56px;margin:0 auto 18px;border-radius:999px;background:var(--c-primary-soft);display:flex;align-items:center;justify-content:center;color:var(--c-primary)}
.empty-state h2{font-size:1.25rem;font-weight:700}
.empty-state p{margin-top:10px;font-size:15px;color:var(--c-ink-2)}
.empty-state .btn{margin-top:22px}
.notice-box{background:var(--c-surface);border:1px solid var(--c-line);border-left:4px solid var(--c-accent);border-radius:16px;padding:20px 22px;font-size:15px;color:var(--c-ink-2)}

/* ---------- CTA ---------- */
.cta-band{margin:0 0 96px}
.cta-inner{position:relative;overflow:hidden;border-radius:28px;background:linear-gradient(120deg,#0A4A43,#127A6C 55%,#1B9482);padding:52px 32px;display:grid;gap:32px}
@media(min-width:1024px){.cta-inner{grid-template-columns:1.2fr .8fr;align-items:center;padding:64px 56px}}
.cta-inner h2{color:#fff;font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:800;letter-spacing:-.02em}
.cta-inner p{color:rgba(255,255,255,.85);margin-top:14px;font-size:15px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.cta-metrics{display:flex;flex-wrap:wrap;gap:14px}
.metric{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);border-radius:16px;padding:16px 20px;min-width:140px;backdrop-filter:blur(4px)}
.metric b{display:block;color:#fff;font-size:22px;font-weight:700}
.metric span{font-size:12px;letter-spacing:.06em;color:rgba(255,255,255,.78)}

/* ---------- footer ---------- */
.site-footer{background:var(--c-footer);color:rgba(240,246,244,.82);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:40px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}}
.footer-logo{display:inline-flex;align-items:center;gap:8px;font-size:17px;font-weight:700;color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(240,246,244,.68);max-width:360px}
.footer-col h3{font-size:13px;font-weight:600;letter-spacing:.06em;color:#fff;margin:0 0 18px}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:14px;color:rgba(240,246,244,.72);transition:color .2s ease}
.footer-col a:hover{color:var(--c-accent)}
.footer-bottom{margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(240,246,244,.55)}

@media(max-width:520px){
  .article-body{font-size:16px}
  .cta-inner{padding:40px 22px}
  .btn{width:100%}
  .cta-actions .btn{width:auto}
}

/* roulang page: category1 */
:root{
  --c-primary:#0F6E63;
  --c-primary-deep:#0A4A43;
  --c-primary-soft:#E4F1EE;
  --c-accent:#F2A93B;
  --c-coral:#FF7A59;
  --c-bg:#FAF8F4;
  --c-surface:#FFFFFF;
  --c-ink:#12211F;
  --c-ink-2:#4A5A57;
  --c-line:#E6E1D8;
  --c-footer:#0A211E;
  --r-lg:24px;
  --r-md:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,33,31,.04),0 8px 24px -12px rgba(18,33,31,.12);
  --sh-2:0 2px 4px rgba(18,33,31,.05),0 18px 40px -18px rgba(18,33,31,.22);
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 40px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(250,248,244,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.9);
  border-bottom-color:var(--c-line);
  box-shadow:0 10px 30px -24px rgba(18,33,31,.65);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.logo{
  display:inline-flex;align-items:center;gap:9px;
  font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--c-ink);
  white-space:nowrap;
}
.logo-dot{
  width:8px;height:8px;border-radius:50%;flex:0 0 8px;
  background:var(--c-primary);
  box-shadow:0 0 0 4px var(--c-primary-soft);
}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-link{
  position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;
  transition:color var(--ease);
}
.nav-link:hover{color:var(--c-primary)}
.nav-link.active{color:var(--c-primary);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--c-primary);
}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:14px;
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.nav-toggle:hover{border-color:rgba(15,110,99,.4);box-shadow:var(--sh-1)}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform var(--ease),opacity var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-panel{
  position:fixed;left:0;right:0;top:72px;bottom:0;z-index:55;
  background:#fff;padding:20px 20px 40px;
  display:flex;flex-direction:column;
  transform:translateY(-10px);opacity:0;pointer-events:none;
  transition:transform .22s ease,opacity .22s ease;
  border-top:1px solid var(--c-line);
  overflow-y:auto;
}
.mobile-panel.open{transform:none;opacity:1;pointer-events:auto}
.mobile-panel a{
  padding:16px 4px;font-size:18px;font-weight:600;color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
}
.mobile-panel a.active{color:var(--c-primary)}
.mobile-panel .btn{margin-top:24px;width:100%}
@media(max-width:1023px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
}
@media(min-width:1024px){.mobile-panel{display:none}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn-primary{background:linear-gradient(120deg,#0F6E63,#1B9482);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-ghost{border-color:rgba(15,110,99,.35);color:var(--c-primary);background:transparent}
.btn-ghost:hover{background:rgba(15,110,99,.06);border-color:rgba(15,110,99,.6)}
.btn-light{background:#fff;color:var(--c-primary-deep)}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-line-light{border-color:rgba(255,255,255,.5);color:#fff;background:transparent}
.btn-line-light:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.8)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px}

/* ---------- 通用 ---------- */
.section{padding:72px 0}
@media(min-width:1024px){.section{padding:104px 0}}
.section-head{max-width:760px;margin-bottom:40px}
.sec-title{
  position:relative;padding-left:16px;
  font-size:1.75rem;font-weight:700;color:var(--c-ink);
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.34em;bottom:.34em;width:4px;border-radius:2px;background:var(--c-primary);
}
.sec-sub{margin-top:14px;color:var(--c-ink-2);font-size:16px;line-height:1.85}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--c-primary);
  text-transform:none;margin-bottom:12px;
}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ---------- 页头 ---------- */
.page-hero{
  padding:40px 0 64px;
  background-image:
    linear-gradient(rgba(250,248,244,.93),rgba(250,248,244,.97)),
    radial-gradient(900px 400px at 10% -10%,rgba(15,110,99,.16),transparent 70%),
    radial-gradient(700px 360px at 100% 0%,rgba(242,169,59,.16),transparent 72%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover,cover,cover,cover;
  background-position:center,center,center,center;
  border-bottom:1px solid var(--c-line);
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-2);margin-bottom:26px}
.breadcrumb a{color:var(--c-ink-2);transition:color var(--ease)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:#B9B2A6}
.page-hero h1{
  font-size:clamp(2rem,4.6vw,3.15rem);font-weight:800;letter-spacing:-.02em;
  max-width:900px;margin-bottom:18px;
}
.page-hero .lead{max-width:720px;font-size:17px;color:var(--c-ink-2)}
.badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.badge{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;
  border-radius:var(--r-pill);background:var(--c-primary-soft);color:var(--c-primary-deep);
  font-size:13px;font-weight:600;
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:0 0 6px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

/* ---------- 四步概览 ---------- */
.overview-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media(max-width:1023px){.overview-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.overview-grid{grid-template-columns:1fr}}
.overview-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:24px 22px;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.overview-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(15,110,99,.28)}
.overview-card .idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:12px;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:14px;font-weight:800;
}
.overview-card h3{font-size:1.0625rem;font-weight:700;margin:16px 0 10px}
.overview-card p{font-size:14.5px;color:var(--c-ink-2)}
.overview-card .metric{
  display:block;margin-top:16px;padding-top:14px;border-top:1px solid var(--c-line);
  font-size:13px;font-weight:600;color:var(--c-primary);
}

/* ---------- 步骤（左文右图交替） ---------- */
.steps{display:flex;flex-direction:column;gap:72px}
.step{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.step:nth-child(even) .step-media{order:-1}
@media(max-width:900px){
  .step{grid-template-columns:1fr;gap:24px}
  .step:nth-child(even) .step-media{order:0}
  .steps{gap:56px}
}
.step-tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--c-primary);background:var(--c-primary-soft);
  padding:4px 12px;border-radius:var(--r-pill);
}
.step h3{font-size:1.375rem;font-weight:700;margin:16px 0 12px}
.step p{color:var(--c-ink-2);font-size:15.5px;margin-bottom:18px}
.step-list{display:flex;flex-direction:column;gap:10px}
.step-list li{position:relative;padding-left:24px;font-size:15px;color:var(--c-ink-2)}
.step-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:12px;height:2px;border-radius:2px;background:var(--c-primary);
}
.media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);
  background:var(--c-primary-soft);box-shadow:var(--sh-1);
}
.media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease}
.media:hover img{transform:scale(1.03)}

/* ---------- 设备对照 ---------- */
.spec-wrap{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:8px 32px;box-shadow:var(--sh-1);
}
@media(max-width:600px){.spec-wrap{padding:8px 20px}}
.spec-row{
  display:grid;grid-template-columns:200px 1fr;gap:28px;
  padding:24px 0;border-bottom:1px solid var(--c-line);
}
.spec-row:last-child{border-bottom:0}
.spec-row dt{font-weight:700;font-size:15px;color:var(--c-ink)}
.spec-row dd{margin:0;font-size:15px;color:var(--c-ink-2)}
@media(max-width:768px){
  .spec-row{grid-template-columns:1fr;gap:8px}
}

/* ---------- 深色区块 ---------- */
.dark-sec{
  background:linear-gradient(140deg,#0A211E,#0B4E45);
  color:#E9F2F0;padding:80px 0;
}
@media(min-width:1024px){.dark-sec{padding:104px 0}}
.dark-sec .sec-title{color:#fff}
.dark-sec .sec-title::before{background:var(--c-accent)}
.dark-sec .sec-sub{color:#A9BEB9}
.dark-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media(max-width:768px){.dark-grid{grid-template-columns:1fr}}
.dark-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-md);padding:26px 24px;
  transition:background var(--ease),transform var(--ease),border-color var(--ease);
}
.dark-card:hover{background:rgba(255,255,255,.1);transform:translateY(-4px);border-color:rgba(242,169,59,.45)}
.dark-card h3{font-size:1.0625rem;font-weight:700;margin-bottom:10px;color:#fff}
.dark-card p{font-size:15px;color:#B7C9C5}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;
  background:none;border:0;text-align:left;padding:22px 0;
  font-size:16px;font-weight:600;color:var(--c-ink);
  transition:color var(--ease);
}
.faq-q:hover{color:var(--c-primary)}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px;transition:transform .2s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-icon::before{left:0;right:0;top:8px;height:2px}
.faq-icon::after{top:0;bottom:0;left:8px;width:2px}
.faq-item.open .faq-q{color:var(--c-primary)}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a p{
  margin:0 0 22px;max-width:820px;font-size:15px;line-height:1.85;color:var(--c-ink-2);
}

/* ---------- CTA ---------- */
.cta-card{
  background:linear-gradient(120deg,#0F6E63,#0A4A43);
  border-radius:28px;padding:44px;
  display:grid;grid-template-columns:1.25fr 1fr;gap:40px;align-items:center;
  box-shadow:var(--sh-2);
}
@media(max-width:900px){.cta-card{grid-template-columns:1fr;gap:26px;padding:32px 24px;border-radius:24px}}
.cta-card h2{font-size:1.75rem;font-weight:800;color:#fff;margin-bottom:14px}
.cta-card p{color:rgba(255,255,255,.82);font-size:15.5px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
@media(max-width:900px){.cta-actions{justify-content:flex-start}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-footer);color:#D8E5E2;padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:600px){.footer-grid{grid-template-columns:1fr}}
.footer-logo{
  display:inline-flex;align-items:center;gap:9px;
  font-size:18px;font-weight:800;color:#fff;
}
.footer-logo .logo-dot{background:var(--c-accent);box-shadow:0 0 0 4px rgba(242,169,59,.16)}
.footer-brand p{margin-top:16px;max-width:360px;font-size:14px;line-height:1.9;color:#93A8A4}
.footer-col h3{font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:#93A8A4;transition:color var(--ease)}
.footer-col a:hover{color:var(--c-accent)}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7C918D;
}

/* roulang page: category2 */
:root{
    --c-primary:#0F6E63;
    --c-primary-deep:#0A4A43;
    --c-primary-soft:#E4F1EE;
    --c-accent:#F2A93B;
    --c-coral:#FF7A59;
    --c-bg:#FAF8F4;
    --c-surface:#FFFFFF;
    --c-ink:#12211F;
    --c-ink-2:#4A5A57;
    --c-line:#E6E1D8;
    --r-xl:28px;
    --r-lg:24px;
    --r-md:16px;
    --sh-1:0 1px 2px rgba(18,33,31,.04),0 8px 24px -12px rgba(18,33,31,.12);
    --sh-2:0 2px 6px rgba(18,33,31,.06),0 22px 44px -20px rgba(18,33,31,.22);
    --ff:"PingFang SC","Noto Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:100px}
  body.site-body{
    margin:0;
    font-family:var(--ff);
    font-size:16px;
    line-height:1.8;
    color:var(--c-ink-2);
    background:var(--c-bg);
    -webkit-font-smoothing:antialiased;
  }
  body.site-body h1,body.site-body h2,body.site-body h3,body.site-body h4{color:var(--c-ink);margin:0;line-height:1.35}
  img{max-width:100%;display:block}
  a{text-decoration:none;color:inherit}
  ul,ol{list-style:none;margin:0;padding:0}
  button{font-family:inherit}
  :focus-visible{outline:3px solid rgba(15,110,99,.35);outline-offset:2px;border-radius:8px}
  .num{font-variant-numeric:tabular-nums}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:1024px){.container{padding:0 40px}}

  /* ---------- header ---------- */
  .site-header{position:sticky;top:0;z-index:60;background:rgba(250,248,244,.86);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:background .2s ease,border-color .2s ease,box-shadow .2s ease}
  .site-header.is-scrolled{background:rgba(255,255,255,.92);border-bottom-color:var(--c-line);box-shadow:0 10px 30px -26px rgba(18,33,31,.6)}
  .nav{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
  .logo{display:inline-flex;align-items:center;gap:9px;font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--c-ink);white-space:nowrap}
  .logo-dot{width:8px;height:8px;border-radius:999px;background:var(--c-primary);box-shadow:0 0 0 4px rgba(15,110,99,.14);flex:none}
  .nav-links{display:none}
  @media (min-width:1024px){.nav-links{display:flex;align-items:center;gap:32px}}
  .nav-link{position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;transition:color .18s ease}
  .nav-link:hover{color:var(--c-primary)}
  .nav-link.active{color:var(--c-primary);font-weight:600}
  .nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--c-primary)}
  .nav-right{display:flex;align-items:center;gap:12px}
  .nav-cta{display:none}
  @media (min-width:640px){.nav-cta{display:inline-flex}}
  .nav-toggle{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;padding:0 10px;border:1px solid var(--c-line);border-radius:14px;background:#fff}
  @media (min-width:1024px){.nav-toggle{display:none}}
  .nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .2s ease,opacity .2s ease}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .mobile-panel{position:fixed;left:0;right:0;top:72px;bottom:0;z-index:55;background:rgba(250,248,244,.98);backdrop-filter:blur(10px);padding:20px 20px 48px;overflow-y:auto;opacity:0;transform:translateY(-10px);pointer-events:none;transition:opacity .22s ease,transform .22s ease}
  .mobile-panel.is-open{opacity:1;transform:none;pointer-events:auto}
  .mobile-panel a.m-link{display:block;padding:18px 4px;border-bottom:1px solid var(--c-line);font-size:18px;font-weight:600;color:var(--c-ink)}
  .mobile-panel a.m-link.active{color:var(--c-primary)}
  .mobile-panel .btn{margin-top:26px;width:100%}

  /* ---------- buttons ---------- */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease}
  .btn-primary{background:linear-gradient(120deg,#0F6E63,#1B9482);color:#fff;box-shadow:0 12px 26px -16px rgba(15,110,99,.95)}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 34px -18px rgba(15,110,99,1)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{border-color:rgba(15,110,99,.35);color:var(--c-primary);background:transparent}
  .btn-ghost:hover{background:rgba(15,110,99,.06)}
  .btn-light{background:#fff;color:var(--c-primary-deep)}
  .btn-light:hover{transform:translateY(-2px);box-shadow:0 18px 32px -20px rgba(0,0,0,.5)}
  .btn-sm{height:40px;padding:0 18px;font-size:14px}

  /* ---------- hero ---------- */
  .page-hero{position:relative;overflow:hidden;padding:48px 0 64px;background:
    radial-gradient(760px 420px at 6% 0%,rgba(15,110,99,.10),transparent 62%),
    radial-gradient(620px 360px at 96% 92%,rgba(242,169,59,.10),transparent 60%),
    var(--c-bg)}
  @media (min-width:1024px){.page-hero{padding:64px 0 88px}}
  .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-2);margin-bottom:22px}
  .crumb a:hover{color:var(--c-primary)}
  .crumb .sep{opacity:.45}
  .crumb .now{color:var(--c-ink);font-weight:600}
  .hero-grid{display:grid;grid-template-columns:1fr;gap:36px}
  @media (min-width:1024px){.hero-grid{grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary);font-size:12.5px;font-weight:700;letter-spacing:.06em}
  .eyebrow::before{content:"";width:6px;height:6px;border-radius:999px;background:var(--c-accent)}
  h1.hero-title{font-size:clamp(2rem,4.6vw,3.1rem);font-weight:800;letter-spacing:-.02em;margin:20px 0 0}
  h1.hero-title .hl{color:var(--c-primary)}
  .hero-lead{font-size:17px;line-height:1.85;margin:18px 0 0;max-width:640px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
  .hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
  .chip{display:inline-flex;align-items:center;gap:7px;height:30px;padding:0 14px;border-radius:999px;background:#fff;border:1px solid var(--c-line);font-size:13px;color:var(--c-ink-2)}
  .chip i{width:6px;height:6px;border-radius:999px;background:var(--c-primary);display:block}
  .hero-visual{position:relative}
  .hero-visual .frame{border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-2);background:var(--c-line)}
  .hero-visual .frame img{width:100%;aspect-ratio:16/11;object-fit:cover}
  .float-card{position:absolute;right:14px;bottom:-22px;width:210px;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border:1px solid var(--c-line);border-radius:var(--r-md);box-shadow:var(--sh-1);padding:16px 18px}
  @media (max-width:520px){.float-card{position:static;width:100%;margin-top:16px;bottom:auto;right:auto}}
  .float-card .fc-label{font-size:12px;letter-spacing:.06em;color:var(--c-ink-2)}
  .float-card .fc-value{font-size:24px;font-weight:800;color:var(--c-ink);margin-top:4px}
  .float-card .fc-value small{font-size:12px;font-weight:600;color:var(--c-ink-2);margin-left:4px}

  /* ---------- layout with anchors ---------- */
  .section{padding:64px 0}
  @media (min-width:1024px){.section{padding:88px 0}}
  .layout-anchor{display:grid;grid-template-columns:1fr;gap:32px}
  @media (min-width:1024px){.layout-anchor{grid-template-columns:258px 1fr;gap:52px;align-items:start}}
  .anchor-nav{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-1)}
  @media (min-width:1024px){.anchor-nav{position:sticky;top:100px}}
  .anchor-title{font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--c-ink-2);margin-bottom:14px}
  .anchor-list{display:flex;gap:10px;overflow-x:auto;padding-bottom:4px}
  @media (min-width:1024px){.anchor-list{display:block;overflow:visible;padding-bottom:0}}
  .anchor-link{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;font-size:14.5px;color:var(--c-ink-2);padding:8px 12px;border-radius:12px;border:1px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease}
  @media (min-width:1024px){.anchor-link{display:flex;width:100%;white-space:normal}}
  .anchor-link::before{content:"";width:5px;height:5px;border-radius:999px;background:var(--c-line);flex:none;transition:background .18s ease}
  .anchor-link:hover{background:var(--c-primary-soft);color:var(--c-primary)}
  .anchor-link.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600}
  .anchor-link.is-active::before{background:var(--c-primary)}
  .anchor-help{margin-top:20px;padding-top:18px;border-top:1px solid var(--c-line);font-size:13.5px;line-height:1.7}
  .anchor-help a{display:inline-flex;align-items:center;gap:6px;margin-top:8px;color:var(--c-primary);font-weight:600}
  .anchor-help a:hover{text-decoration:underline}

  /* ---------- block heads ---------- */
  .block + .block{margin-top:64px}
  @media (min-width:1024px){.block + .block{margin-top:88px}}
  .block-head{margin-bottom:28px}
  .block-head h2{font-size:1.6rem;font-weight:700;letter-spacing:-.01em;padding-left:16px;position:relative}
  @media (min-width:1024px){.block-head h2{font-size:1.75rem}}
  .block-head h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:4px;background:var(--c-primary)}
  .block-head p{margin:12px 0 0;font-size:15.5px;max-width:720px}

  /* ---------- waterfall cards ---------- */
  .waterfall{column-count:1;column-gap:24px}
  @media (min-width:680px){.waterfall{column-count:2}}
  @media (min-width:1180px){.waterfall{column-count:3;column-gap:26px}}
  .card{break-inside:avoid;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);margin:0 0 24px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
  .card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(15,110,99,.28)}
  .card-media{background:rgba(230,225,216,.35)}
  .card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease}
  .card:hover .card-media img{transform:scale(1.03)}
  .card-body{padding:20px 22px 22px}
  .card-body h3{font-size:1.06rem;font-weight:700;line-height:1.5}
  .card-body p{margin:10px 0 0;font-size:14.6px;line-height:1.78}
  .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
  .tag{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary);font-size:12px;font-weight:700;letter-spacing:.04em}
  .tag.warm{background:rgba(242,169,59,.16);color:#8A5A0B}
  .card-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:600;color:var(--c-primary)}
  .card-link:hover{gap:10px}
  .card-link::after{content:"→";transition:transform .18s ease}

  /* ---------- metric strip ---------- */
  .metrics-wrap{padding:0 0 64px}
  @media (min-width:1024px){.metrics-wrap{padding:0 0 88px}}
  .metrics{background:#0A211E;border-radius:var(--r-xl);padding:36px 24px;color:#DCEAE6;box-shadow:var(--sh-2)}
  @media (min-width:1024px){.metrics{padding:52px 48px}}
  .metrics h2{color:#fff;font-size:1.4rem;font-weight:700}
  .metrics .m-sub{margin:10px 0 0;font-size:15px;color:rgba(220,234,230,.78);max-width:680px}
  .metric-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px}
  @media (min-width:900px){.metric-grid{grid-template-columns:repeat(4,1fr);gap:24px}}
  .metric{padding:20px 18px;border-radius:var(--r-md);background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1)}
  .metric .mv{font-size:1.9rem;font-weight:800;color:#fff;line-height:1.2}
  .metric .mv small{font-size:.8rem;font-weight:600;color:var(--c-accent);margin-left:6px}
  .metric .ml{margin-top:8px;font-size:13.5px;color:rgba(220,234,230,.72)}

  /* ---------- faq ---------- */
  .faq-list{border-top:1px solid var(--c-line)}
  .faq-item{border-bottom:1px solid var(--c-line)}
  .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 2px;background:none;border:0;text-align:left;font-size:16px;font-weight:600;color:var(--c-ink);cursor:pointer;transition:color .2s ease}
  .faq-q:hover{color:var(--c-primary)}
  .faq-q .mark{position:relative;width:18px;height:18px;flex:none;transition:transform .25s ease}
  .faq-q .mark::before,.faq-q .mark::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px}
  .faq-q .mark::before{left:0;right:0;top:8px;height:2px}
  .faq-q .mark::after{top:0;bottom:0;left:8px;width:2px}
  .faq-item.is-open .faq-q{color:var(--c-primary)}
  .faq-item.is-open .faq-q .mark{transform:rotate(45deg)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
  .faq-a p{margin:0 0 22px;font-size:15px;line-height:1.85;max-width:820px}

  /* ---------- cta ---------- */
  .cta-card{background:linear-gradient(120deg,#0F6E63,#0A4A43);border-radius:var(--r-xl);padding:40px 24px;color:#fff;box-shadow:var(--sh-2);position:relative;overflow:hidden}
  @media (min-width:1024px){.cta-card{padding:56px 56px}}
  .cta-card::after{content:"";position:absolute;right:-90px;top:-70px;width:320px;height:320px;border-radius:999px;background:radial-gradient(circle,rgba(242,169,59,.28),transparent 68%)}
  .cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:32px}
  @media (min-width:1024px){.cta-inner{grid-template-columns:1.25fr .75fr;align-items:center;gap:56px}}
  .cta-card h2{color:#fff;font-size:1.75rem;font-weight:800;letter-spacing:-.01em}
  .cta-card p{color:rgba(255,255,255,.82);margin:14px 0 0;font-size:15.5px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
  .cta-panel{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:var(--r-lg);padding:24px}
  .cta-panel h3{color:#fff;font-size:15px;font-weight:700;letter-spacing:.02em}
  .cta-panel ul{margin-top:16px}
  .cta-panel li{display:flex;gap:10px;font-size:14.2px;color:rgba(255,255,255,.82);padding:9px 0;border-top:1px solid rgba(255,255,255,.12)}
  .cta-panel li:first-child{border-top:0}
  .cta-panel li::before{content:"";width:6px;height:6px;border-radius:999px;background:var(--c-accent);margin-top:9px;flex:none}

  /* ---------- footer ---------- */
  .site-footer{background:#0A211E;color:rgba(233,241,238,.78);padding:56px 0 0;margin-top:64px}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:36px;padding-bottom:40px}
  @media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}}
  .footer-logo{display:inline-flex;align-items:center;gap:9px;font-size:18px;font-weight:800;color:#fff}
  .footer-brand p{margin:16px 0 0;font-size:14px;line-height:1.85;max-width:360px}
  .footer-col h3{color:#fff;font-size:14.5px;font-weight:700;margin-bottom:16px}
  .footer-col li + li{margin-top:10px}
  .footer-col a{font-size:14px;color:rgba(233,241,238,.72);transition:color .18s ease}
  .footer-col a:hover{color:var(--c-accent)}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;font-size:13px;color:rgba(233,241,238,.6)}

  @media (max-width:520px){
    .hero-actions .btn{width:100%}
    .block-head h2{font-size:1.4rem}
  }

/* roulang page: category3 */
:root{
  --c-primary:#0F6E63;
  --c-primary-deep:#0A4A43;
  --c-primary-soft:#E4F1EE;
  --c-accent:#F2A93B;
  --c-coral:#FF7A59;
  --c-bg:#FAF8F4;
  --c-surface:#FFFFFF;
  --c-ink:#12211F;
  --c-ink-2:#4A5A57;
  --c-line:#E6E1D8;
  --c-dark:#0A211E;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --sh-1:0 1px 2px rgba(18,33,31,.04), 0 8px 24px -12px rgba(18,33,31,.12);
  --sh-2:0 2px 4px rgba(18,33,31,.06), 0 18px 40px -16px rgba(18,33,31,.2);
  --container:1200px;
}
*,*::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);
  font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-ink);letter-spacing:-.02em;line-height:1.35}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 40px}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(250,248,244,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease,background .2s ease;
}
.site-header.is-scrolled{background:rgba(255,255,255,.94);box-shadow:var(--sh-1)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.logo{
  display:inline-flex;align-items:center;gap:8px;
  font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--c-ink);white-space:nowrap;
}
.logo-dot{width:7px;height:7px;border-radius:50%;background:var(--c-accent);display:inline-block;flex:none}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-link{
  position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;
  transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--c-ink)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--c-primary);font-weight:600}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-cta{white-space:nowrap}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;border:1px solid var(--c-line);border-radius:12px;
  background:var(--c-surface);cursor:pointer;padding:0 10px;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .2s ease,opacity .2s ease}
.site-header.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.site-header.nav-open .nav-toggle span:nth-child(2){opacity:0}
.site-header.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;border:1px solid transparent;cursor:pointer;
  font-size:15px;font-weight:600;line-height:1;
  padding:15px 28px;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-sm{padding:11px 20px;font-size:14px}
.btn-primary{
  background:linear-gradient(120deg,#0F6E63,#1B9482);color:#fff;
  box-shadow:0 10px 22px -14px rgba(15,110,99,.85);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px -14px rgba(15,110,99,.9)}
.btn-ghost{background:transparent;border-color:rgba(15,110,99,.45);color:var(--c-primary)}
.btn-ghost:hover{background:rgba(15,110,99,.07);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--c-primary-deep);box-shadow:var(--sh-1)}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}

/* ---------- generic section ---------- */
main{display:block}
.section{padding:64px 0}
@media (min-width:768px){.section{padding:88px 0}}
@media (min-width:1024px){.section{padding:112px 0}}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:999px;padding:7px 14px;margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent)}
.section-title{font-size:1.75rem;font-weight:700;margin-bottom:14px}
.section-lead{color:var(--c-ink-2);font-size:16.5px}
.section-dark{background:var(--c-dark);color:#DDE9E6;border-radius:32px;padding:56px 28px}
@media (min-width:768px){.section-dark{padding:72px 56px}}
.section-dark h2,.section-dark h3{color:#fff}
.section-dark .section-lead{color:rgba(221,233,230,.78)}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--c-line)}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:
    radial-gradient(560px 320px at 8% 0%, rgba(15,110,99,.10), transparent 70%),
    radial-gradient(520px 300px at 96% 96%, rgba(242,169,59,.14), transparent 72%),
    url("/assets/images/backpic/back-1.webp");
  background-size:auto,auto,cover;
  background-position:center,center,center;
  opacity:1;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(250,248,244,.92),rgba(250,248,244,.86));
}
.page-hero .container{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--c-ink-2);padding:28px 0 0}
.crumbs a:hover{color:var(--c-primary)}
.crumb-sep{color:var(--c-line)}
.hero-grid{display:grid;grid-template-columns:1fr;gap:40px;padding:36px 0 64px;align-items:center}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:1.55fr 1fr;gap:56px;padding:48px 0 88px}
}
.hero-title{font-size:clamp(2rem,5vw,3.25rem);font-weight:800;letter-spacing:-.02em;margin-bottom:18px}
.hero-title .hl{color:var(--c-primary)}
.hero-sub{font-size:17px;color:var(--c-ink-2);max-width:600px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;border-radius:28px;aspect-ratio:4/3;object-fit:cover;
  box-shadow:var(--sh-2);background:rgba(230,225,216,.35);
}
.hero-float{
  position:absolute;right:18px;bottom:-22px;
  background:rgba(255,255,255,.92);border:1px solid var(--c-line);
  border-radius:18px;padding:14px 18px;box-shadow:var(--sh-1);
  backdrop-filter:blur(6px);
}
.hero-float strong{display:block;font-size:20px;font-weight:800;color:var(--c-primary);font-variant-numeric:tabular-nums}
.hero-float span{font-size:12px;color:var(--c-ink-2);letter-spacing:.04em}

/* ---------- badges / metrics ---------- */
.badges{display:flex;flex-wrap:wrap;gap:12px}
.badge{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--c-primary-soft);color:var(--c-primary-deep);
  border-radius:999px;padding:9px 16px;font-size:13px;font-weight:600;
}
.badge i{width:6px;height:6px;border-radius:50%;background:var(--c-accent);display:block}
.badge b{font-variant-numeric:tabular-nums;font-size:15px;font-weight:800}
.badge em{font-style:normal;font-size:12px;color:var(--c-ink-2);font-weight:500}

.metric-bar{
  display:grid;grid-template-columns:repeat(2,1fr);gap:1px;
  background:var(--c-line);border:1px solid var(--c-line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
}
@media (min-width:1024px){.metric-bar{grid-template-columns:repeat(4,1fr)}}
.metric{background:var(--c-surface);padding:28px 24px}
.metric b{display:block;font-size:30px;font-weight:800;color:var(--c-primary);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.metric b span{font-size:14px;font-weight:600;color:var(--c-ink-2);margin-left:4px;letter-spacing:0}
.metric p{margin-top:8px;font-size:14px;color:var(--c-ink-2);line-height:1.7}

/* ---------- numbered steps (核心版式) ---------- */
.steps{border-top:1px solid var(--c-line)}
.step{
  display:grid;grid-template-columns:1fr;gap:16px;
  padding:36px 0;border-bottom:1px solid var(--c-line);
}
@media (min-width:768px){
  .step{grid-template-columns:104px 1fr;gap:32px;padding:48px 0}
}
.step-num{
  font-size:44px;font-weight:800;line-height:1;color:var(--c-primary);
  opacity:.32;font-variant-numeric:tabular-nums;letter-spacing:-.03em;
}
@media (min-width:768px){.step-num{font-size:56px;padding-top:4px}}
.step h3{font-size:1.25rem;font-weight:700;margin-bottom:12px}
.step p{color:var(--c-ink-2);margin-bottom:16px}
.step-inner{display:grid;grid-template-columns:1fr;gap:24px;align-items:start}
@media (min-width:1024px){.step-inner.has-media{grid-template-columns:1.15fr .85fr;gap:36px}}
.step-media img{width:100%;border-radius:var(--r-lg);aspect-ratio:16/10;object-fit:cover;box-shadow:var(--sh-1);background:rgba(230,225,216,.35)}
.points{display:grid;gap:10px;margin-top:4px}
.points li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:15px;color:var(--c-ink-2);
}
.points li::before{
  content:"";flex:none;width:6px;height:6px;border-radius:50%;
  background:var(--c-primary);margin-top:10px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary-deep);
  font-size:12px;font-weight:600;letter-spacing:.05em;
}

/* ---------- dark checklist ---------- */
.check-grid{display:grid;grid-template-columns:1fr;gap:18px;margin-top:36px}
@media (min-width:768px){.check-grid{grid-template-columns:repeat(2,1fr);gap:20px 32px}}
.check-item{display:flex;gap:14px;align-items:flex-start}
.check-mark{
  flex:none;width:26px;height:26px;border-radius:9px;
  background:rgba(242,169,59,.16);border:1px solid rgba(242,169,59,.5);
  display:flex;align-items:center;justify-content:center;margin-top:4px;
}
.check-mark::after{
  content:"";width:9px;height:5px;border-left:2px solid var(--c-accent);
  border-bottom:2px solid var(--c-accent);transform:rotate(-45deg) translateY(-1px);
}
.check-item h3{font-size:16px;font-weight:600;margin-bottom:4px}
.check-item p{font-size:14.5px;color:rgba(221,233,230,.76);line-height:1.75}

/* ---------- notice cards ---------- */
.notice-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){.notice-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.notice-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.notice-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:28px 24px;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.notice-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(15,110,99,.22)}
.notice-card h3{font-size:17px;font-weight:700;margin:16px 0 10px}
.notice-card p{font-size:15px;color:var(--c-ink-2);line-height:1.8}
.notice-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:12px;background:var(--c-primary-soft);
  color:var(--c-primary);font-weight:800;font-size:14px;font-variant-numeric:tabular-nums;
}

/* ---------- faq ---------- */
.faq{max-width:860px}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--c-ink);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--c-primary)}
.faq-icon{position:relative;width:20px;height:20px;flex:none;transition:transform .2s ease}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
}
.faq-icon::before{left:9px;top:2px;width:2px;height:16px}
.faq-icon::after{left:2px;top:9px;width:16px;height:2px}
.faq-item[open] summary{color:var(--c-primary)}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-answer{padding:0 0 24px;color:var(--c-ink-2);font-size:15px;line-height:1.85}

/* ---------- cta ---------- */
.cta-card{
  background:linear-gradient(120deg,#0F6E63,#1B9482);
  border-radius:32px;padding:48px 28px;color:#fff;
  display:grid;grid-template-columns:1fr;gap:32px;align-items:center;
  box-shadow:var(--sh-2);
}
@media (min-width:1024px){.cta-card{grid-template-columns:1.4fr 1fr;padding:64px 56px;gap:48px}}
.cta-card h2{color:#fff;font-size:1.75rem;margin-bottom:14px}
.cta-card p{color:rgba(255,255,255,.85);font-size:16px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
@media (min-width:1024px){.cta-actions{justify-content:flex-end}}
.cta-notes{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.cta-notes span{
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);
  border-radius:999px;padding:7px 14px;
}

/* ---------- footer ---------- */
.site-footer{background:var(--c-dark);color:rgba(233,242,240,.78);margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:36px;
  padding:64px 0 40px;
}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;padding:80px 0 48px}}
.footer-logo{
  display:inline-flex;align-items:center;gap:8px;
  font-size:17px;font-weight:700;color:#fff;margin-bottom:16px;
}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(233,242,240,.7);max-width:420px}
.footer-col h3{font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em;margin-bottom:16px}
.footer-col ul{display:grid;gap:12px}
.footer-col a{font-size:14.5px;color:rgba(233,242,240,.72);transition:color .18s ease,transform .18s ease;display:inline-block}
.footer-col a:hover{color:var(--c-accent);transform:translateX(2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid rgba(233,242,240,.14);padding:22px 0 30px;
  font-size:13px;color:rgba(233,242,240,.6);
}

/* ---------- mobile nav ---------- */
@media (max-width:1023px){
  .nav-links{
    position:fixed;left:0;right:0;top:72px;bottom:0;
    background:#fff;flex-direction:column;align-items:flex-start;gap:0;
    padding:16px 20px 40px;overflow-y:auto;
    transform:translateX(101%);transition:transform .28s ease;
    box-shadow:var(--sh-2);z-index:70;
  }
  .site-header.nav-open .nav-links{transform:translateX(0)}
  .nav-links .nav-link{
    width:100%;padding:18px 0;font-size:17px;border-bottom:1px solid var(--c-line);
  }
  .nav-links .nav-link::after{display:none}
  .nav-links .nav-link.active{color:var(--c-primary)}
  .nav-cta{display:none}
  .nav-toggle{display:flex}
}
@media (min-width:1024px){
  .nav-toggle{display:none}
}
@media (max-width:520px){
  .hero-float{right:10px;bottom:-18px;padding:12px 14px}
  .hero-float strong{font-size:17px}
  .btn{padding:14px 22px;font-size:14.5px}
  .metric b{font-size:26px}
}

/* roulang page: category4 */
:root{
  --c-primary:#0F6E63;
  --c-primary-deep:#0A4A43;
  --c-primary-soft:#E4F1EE;
  --c-accent:#F2A93B;
  --c-coral:#FF7A59;
  --c-bg:#FAF8F4;
  --c-surface:#FFFFFF;
  --c-ink:#12211F;
  --c-ink-2:#4A5A57;
  --c-line:#E6E1D8;
  --sh-1:0 1px 2px rgba(18,33,31,.04), 0 8px 24px -12px rgba(18,33,31,.12);
  --sh-2:0 2px 4px rgba(18,33,31,.05), 0 18px 40px -16px rgba(18,33,31,.20);
  --r-lg:24px;
  --r-md:16px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:1024px){.container{padding-left:40px;padding-right:40px;}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(250,248,244,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.logo{
  display:inline-flex;align-items:center;gap:9px;
  font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--c-ink);
  white-space:nowrap;
}
.logo-dot{width:7px;height:7px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 0 4px var(--c-primary-soft);flex:none;}
.nav-links{display:none;}
.nav-link{
  position:relative;font-size:15px;color:var(--c-ink-2);
  padding:6px 0;transition:color .18s ease;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link.active{color:var(--c-primary);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.nav-right{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  width:42px;height:42px;border:1px solid var(--c-line);border-radius:12px;
  background:var(--c-surface);display:inline-flex;flex-direction:column;
  align-items:center;justify-content:center;gap:4px;transition:border-color .18s ease;
}
.nav-toggle:hover{border-color:var(--c-primary);}
.nav-toggle span{display:block;width:16px;height:1.6px;background:var(--c-ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.site-header.nav-open .nav-toggle span:nth-child(1){transform:translateY(5.6px) rotate(45deg);}
.site-header.nav-open .nav-toggle span:nth-child(2){opacity:0;}
.site-header.nav-open .nav-toggle span:nth-child(3){transform:translateY(-5.6px) rotate(-45deg);}
@media (min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:32px;}
  .nav-toggle{display:none;}
}
@media (max-width:1023px){
  .nav-cta{display:none;}
  .nav-links{
    display:flex;flex-direction:column;gap:0;
    position:fixed;left:0;right:0;top:72px;bottom:0;
    background:var(--c-bg);padding:20px 24px 48px;overflow:auto;
    opacity:0;pointer-events:none;transform:translateY(-10px);
    transition:opacity .2s ease,transform .2s ease;
    border-top:1px solid var(--c-line);
  }
  .site-header.nav-open .nav-links{opacity:1;pointer-events:auto;transform:none;}
  .nav-link{font-size:18px;font-weight:500;padding:18px 0;border-bottom:1px solid var(--c-line);width:100%;}
  .nav-link.active::after{display:none;}
}

/* ---------- 按钮 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;padding:13px 26px;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{background:linear-gradient(120deg,#0F6E63,#1B9482);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:focus-visible{outline:3px solid rgba(15,110,99,.28);outline-offset:2px;}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary);background:transparent;}
.btn-ghost:hover{background:rgba(15,110,99,.06);transform:translateY(-2px);}
.btn-light{background:#fff;color:var(--c-primary-deep);box-shadow:var(--sh-1);}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-outline-light{border-color:rgba(255,255,255,.55);color:#fff;background:transparent;}
.btn-outline-light:hover{background:rgba(255,255,255,.12);}
.btn-sm{padding:9px 18px;font-size:14px;}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:600;letter-spacing:.06em;
}
.tag-accent{background:rgba(242,169,59,.16);color:#9A6510;}

/* ---------- 通用板块 ---------- */
.section{padding:64px 0;}
@media (min-width:1024px){.section{padding:96px 0;}}
.sec-head{max-width:760px;margin-bottom:34px;}
.sec-head h2{font-size:clamp(1.5rem,2.7vw,1.8rem);font-weight:700;letter-spacing:-.01em;line-height:1.35;margin:0 0 12px;}
.sec-head p{margin:0;color:var(--c-ink-2);font-size:16px;}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--c-primary);background:var(--c-primary-soft);
  padding:6px 13px;border-radius:999px;margin-bottom:16px;
}

/* ---------- 页头 ---------- */
.page-hero{padding:44px 0 8px;position:relative;overflow:hidden;}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(560px 320px at 8% 0%,rgba(15,110,99,.10),transparent 70%),
    radial-gradient(520px 320px at 96% 24%,rgba(242,169,59,.10),transparent 72%);
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-2);margin-bottom:26px;}
.crumb a{transition:color .18s ease;}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:var(--c-line);}
.crumb .cur{color:var(--c-ink);font-weight:600;}
.hero-grid{display:grid;gap:36px;grid-template-columns:1fr;align-items:center;}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.08fr .92fr;gap:56px;}}
.hero-copy h1{
  font-size:clamp(1.9rem,4.6vw,3.1rem);
  font-weight:800;line-height:1.2;letter-spacing:-.02em;margin:0 0 18px;
}
.hero-lead{margin:0 0 26px;color:var(--c-ink-2);font-size:16.5px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-points{list-style:none;margin:0;padding:0;display:grid;gap:12px;}
.hero-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--c-ink-2);}
.hero-points .dot{
  flex:none;width:18px;height:18px;border-radius:50%;margin-top:5px;
  background:var(--c-primary-soft);position:relative;
}
.hero-points .dot::after{
  content:"";position:absolute;left:6px;top:6px;width:6px;height:6px;border-radius:50%;
  background:var(--c-primary);
}
.hero-figure{position:relative;margin:0;}
.hero-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:28px;background:rgba(230,225,216,.4);
  box-shadow:var(--sh-2);
}
.hero-float{
  position:absolute;right:18px;bottom:-18px;
  background:rgba(255,255,255,.94);
  border:1px solid var(--c-line);border-radius:18px;
  padding:14px 18px;box-shadow:var(--sh-1);
  backdrop-filter:blur(6px);
}
.hero-float .num{font-size:22px;font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:-.02em;color:var(--c-ink);line-height:1.2;}
.hero-float .lbl{font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--c-ink-2);}

/* ---------- 数据条 ---------- */
.stat-grid{display:grid;gap:16px;grid-template-columns:repeat(2,1fr);}
@media (min-width:1024px){.stat-grid{grid-template-columns:repeat(4,1fr);gap:20px;}}
.stat-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(15,110,99,.24);}
.stat-num{font-size:30px;font-weight:800;line-height:1.1;letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:var(--c-ink);}
.stat-unit{font-size:13px;font-weight:600;color:var(--c-ink-2);margin-left:4px;}
.stat-label{margin:10px 0 0;font-size:14px;color:var(--c-ink-2);}
.stat-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--c-accent);margin-right:8px;vertical-align:middle;}

/* ---------- 现象-处理对照卡 ---------- */
.compare-grid{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:640px){.compare-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1180px){.compare-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
.compare-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:26px 26px 22px;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  display:flex;flex-direction:column;
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(15,110,99,.24);}
.cc-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;}
.cc-title{font-size:17px;font-weight:700;margin:0;}
.cc-block{padding-top:14px;margin-top:14px;border-top:1px dashed var(--c-line);}
.cc-label{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--c-ink-2);margin:0 0 6px;display:flex;align-items:center;gap:7px;}
.cc-label::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-ink-2);opacity:.45;}
.cc-label.is-fix{color:var(--c-primary);}
.cc-label.is-fix::before{background:var(--c-primary);opacity:1;}
.cc-text{margin:0;font-size:14.5px;color:var(--c-ink-2);line-height:1.8;}

/* ---------- 深色板块 ---------- */
.dark-band{
  background:linear-gradient(135deg,#0A4A43 0%,#0F6E63 58%,#12806F 100%);
  border-radius:28px;padding:40px 24px;color:#EAF4F2;
  position:relative;overflow:hidden;
}
.dark-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(242,169,59,.28),transparent 70%);
}
@media (min-width:1024px){.dark-band{padding:56px 56px;}}
.dark-band h2{margin:0 0 12px;font-size:clamp(1.5rem,2.7vw,1.8rem);font-weight:700;color:#fff;letter-spacing:-.01em;}
.dark-band .dark-lead{margin:0 0 34px;color:#BBD6D1;max-width:660px;font-size:16px;}
.dark-grid{display:grid;gap:18px;grid-template-columns:1fr;position:relative;z-index:1;}
@media (min-width:768px){.dark-grid{grid-template-columns:repeat(3,1fr);gap:22px;}}
.dark-card{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.16);
  border-radius:20px;padding:26px 24px;
  transition:background .18s ease,transform .18s ease,border-color .18s ease;
}
.dark-card:hover{background:rgba(255,255,255,.12);transform:translateY(-4px);border-color:rgba(242,169,59,.5);}
.dark-num{font-size:26px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--c-accent);letter-spacing:.02em;line-height:1;}
.dark-card h3{margin:16px 0 8px;font-size:17px;font-weight:700;color:#fff;}
.dark-card p{margin:0;font-size:14.5px;color:#BBD6D1;line-height:1.8;}

/* ---------- 场景卡 ---------- */
.scene-grid{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:640px){.scene-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.scene-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
.scene-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(15,110,99,.24);}
.scene-card h3{margin:14px 0 8px;font-size:17px;font-weight:700;}
.scene-card p{margin:0;font-size:14.5px;color:var(--c-ink-2);line-height:1.8;}

/* ---------- 清单 ---------- */
.check-list{list-style:none;margin:0;padding:0;display:grid;gap:14px;grid-template-columns:1fr;}
@media (min-width:768px){.check-list{grid-template-columns:repeat(2,1fr);gap:16px;}}
.check-list li{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:18px 20px;box-shadow:var(--sh-1);
}
.check-mark{
  flex:none;width:22px;height:22px;border-radius:7px;background:var(--c-primary-soft);
  color:var(--c-primary);font-size:13px;font-weight:800;
  display:flex;align-items:center;justify-content:center;margin-top:4px;
}
.check-list strong{display:block;font-size:15.5px;margin-bottom:4px;}
.check-list span{font-size:14px;color:var(--c-ink-2);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;background:none;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0;font-size:16px;font-weight:600;color:var(--c-ink);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--c-primary);}
.faq-q:focus-visible{outline:3px solid rgba(15,110,99,.25);outline-offset:4px;border-radius:8px;}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:600;color:var(--c-ink-2);
  transition:transform .22s ease,color .18s ease,border-color .18s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);color:var(--c-primary);border-color:var(--c-primary);}
.faq-item.open .faq-q{color:var(--c-primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease;}
.faq-a p{margin:0 0 22px;font-size:15px;color:var(--c-ink-2);line-height:1.85;max-width:760px;}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,#0F6E63,#0A4A43);
  border-radius:28px;padding:40px 26px;color:#fff;
  display:grid;gap:28px;grid-template-columns:1fr;
  box-shadow:var(--sh-2);
}
@media (min-width:1024px){.cta-band{grid-template-columns:1.35fr .65fr;align-items:center;padding:56px;gap:48px;}}
.cta-band h2{margin:0 0 14px;font-size:clamp(1.5rem,2.7vw,1.9rem);font-weight:700;color:#fff;letter-spacing:-.01em;}
.cta-band p{margin:0;color:#C6DEDA;font-size:16px;max-width:620px;}
.cta-actions{display:flex;flex-direction:column;gap:14px;}
@media (min-width:520px) and (max-width:1023px){.cta-actions{flex-direction:row;}}
@media (min-width:1024px){.cta-actions{justify-content:flex-end;}}
.cta-note{font-size:13px;color:#9FC0BB;margin-top:6px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#0A211E;color:#CBD9D6;padding:64px 0 28px;margin-top:80px;}
.footer-grid{display:grid;gap:36px;grid-template-columns:1fr;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}}
.footer-logo{
  display:inline-flex;align-items:center;gap:9px;
  font-size:17px;font-weight:700;color:#fff;margin-bottom:16px;
}
.site-footer .logo-dot{background:var(--c-accent);box-shadow:none;}
.footer-brand p{margin:0;font-size:14px;line-height:1.85;color:#9FB3AF;max-width:360px;}
.footer-col h3{margin:0 0 16px;font-size:14px;font-weight:600;letter-spacing:.04em;color:#fff;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:#9FB3AF;transition:color .18s ease;}
.footer-col a:hover{color:var(--c-accent);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.1);
  margin-top:44px;padding-top:24px;font-size:13px;color:#7E938F;
}
.footer-bottom p{margin:0;}