/* roulang page: index */
:root{
  --brand-700:#086B5C;
  --brand-600:#0A8F7D;
  --brand-500:#10B29A;
  --brand-400:#3FD3BC;
  --brand-050:#EAFBF6;
  --accent-500:#FF7A45;
  --accent-400:#FFA46B;
  --accent-050:#FFF2E9;
  --ink-900:#0D1F24;
  --ink-700:#2A4149;
  --ink-500:#5A7078;
  --line:#E3EBEA;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --grad-brand:linear-gradient(115deg,#0A8F7D 0%,#10B29A 42%,#3FD3BC 100%);
  --grad-accent:linear-gradient(120deg,#FF7A45 0%,#FFB35C 100%);
  --grad-deep:linear-gradient(135deg,#0D3B36 0%,#0A8F7D 62%,#10B29A 100%);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(13,31,36,.06);
  --sh-2:0 10px 24px -12px rgba(13,31,36,.18);
  --sh-3:0 28px 60px -28px rgba(10,143,125,.38);
  --nav-h:64px;
  --font-cn:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-0.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
svg{display:block;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px;}

.container{max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.container{padding:0 32px;}}

/* ---------- Buttons ---------- */
.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;line-height:1;
  transition:transform 180ms ease,box-shadow 180ms ease,background-color 180ms ease,border-color 180ms ease,color 180ms ease,filter 180ms ease;
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{background-image:var(--grad-brand);color:#fff;box-shadow:var(--sh-3);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--brand-600);padding:0 4px;}
.btn-ghost:hover{color:var(--brand-700);}
.btn-ghost .arrow{transition:transform 180ms ease;}
.btn-ghost:hover .arrow{transform:translateX(5px);}
.btn-outline{background:#fff;border:1.5px solid var(--line);color:var(--ink-900);}
.btn-outline:hover{border-color:var(--brand-500);color:var(--brand-600);}
.btn-accent{background-image:var(--grad-accent);color:#fff;box-shadow:0 18px 40px -22px rgba(255,122,69,.75);}
.btn-accent:hover{filter:brightness(1.05);transform:translateY(-1px);}
.btn-block{width:100%;}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:var(--nav-h);
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color 200ms ease,box-shadow 200ms ease,border-color 200ms ease;
}
.site-header.scrolled{background:#FFFFFF;border-bottom-color:var(--line);box-shadow:var(--sh-1);}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.nav-left{display:flex;align-items:center;gap:32px;min-width:0;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:32px;height:32px;border-radius:10px;background-image:var(--grad-brand);
  display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-1);flex:0 0 auto;
}
.brand-mark svg{width:18px;height:18px;stroke:#fff;}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-0.01em;}
.main-nav{display:flex;align-items:center;gap:28px;}
.nav-link{
  position:relative;font-size:15px;color:var(--ink-700);
  padding:6px 0;transition:color 180ms ease;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;border-radius:2px;
  background-image:var(--grad-brand);transition:width 180ms ease;
}
.nav-link:hover{color:var(--brand-600);}
.nav-link:hover::after{width:30%;}
.nav-link.active{color:var(--brand-600);font-weight:600;}
.nav-link.active::after{width:100%;}
.nav-right{display:flex;align-items:center;gap:16px;flex:0 0 auto;}
.search-box{display:flex;align-items:center;position:relative;}
.search-toggle{
  width:40px;height:40px;border-radius:var(--r-pill);display:flex;align-items:center;justify-content:center;
  color:var(--ink-700);transition:background-color 180ms ease,color 180ms ease;
}
.search-toggle:hover{background:var(--brand-050);color:var(--brand-600);}
.search-toggle svg{width:19px;height:19px;stroke:currentColor;}
.search-input{
  width:0;opacity:0;pointer-events:none;
  height:40px;padding:0;border-radius:var(--r-pill);border:1px solid var(--line);
  background:#fff;font-size:14px;color:var(--ink-900);
  transition:width 220ms ease,opacity 180ms ease,padding 220ms ease;
}
.search-box.open .search-input{width:220px;opacity:1;pointer-events:auto;padding:0 16px;margin-left:8px;}
.search-input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(16,178,154,.18);}
.hamburger{width:40px;height:40px;border-radius:var(--r-sm);display:none;align-items:center;justify-content:center;color:var(--ink-900);}
.hamburger svg{width:22px;height:22px;stroke:currentColor;}
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-right .btn{display:none;}
  .hamburger{display:flex;}
}
@media (max-width:640px){
  .search-box{display:none;}
}

/* ---------- Mobile drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(13,31,36,.45);opacity:0;visibility:hidden;
  transition:opacity 200ms ease,visibility 200ms ease;z-index:110;
}
.drawer-mask.show{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:78vw;max-width:340px;background:#fff;z-index:120;
  transform:translateX(100%);transition:transform 240ms ease;
  padding:24px 22px;display:flex;flex-direction:column;gap:24px;overflow-y:auto;
}
.drawer.show{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:36px;height:36px;border-radius:var(--r-sm);display:flex;align-items:center;justify-content:center;color:var(--ink-700);}
.drawer-close svg{width:20px;height:20px;stroke:currentColor;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  padding:13px 14px;border-radius:var(--r-md);font-size:16px;color:var(--ink-700);
  transition:background-color 180ms ease,color 180ms ease;
}
.drawer-nav a:hover,.drawer-nav a.active{background:var(--brand-050);color:var(--brand-700);font-weight:600;}
.drawer-search input{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-md);
  border:1px solid var(--line);font-size:15px;background:#fff;color:var(--ink-900);
}
.drawer-search input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(16,178,154,.18);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding-top:calc(var(--nav-h) + 40px);
  padding-bottom:72px;
  background:#fff;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;top:-160px;right:-160px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(63,211,188,.22),rgba(63,211,188,0) 68%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr;gap:40px;align-items:center;}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:6fr 6fr;gap:48px;}
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:34px;padding:0 16px;border-radius:var(--r-pill);
  background:var(--brand-050);color:var(--brand-700);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--accent-500);}
.hero h1{
  margin-top:22px;
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.18;
}
.hero h1 em{font-style:normal;color:var(--brand-600);}
.hero-sub{
  margin-top:18px;max-width:560px;
  font-size:clamp(16px,1.5vw,18px);line-height:1.8;color:var(--ink-700);
}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.badge-row{margin-top:40px;display:flex;flex-wrap:wrap;gap:12px;}
.badge{
  display:flex;align-items:center;gap:10px;
  padding:12px 18px;border-radius:var(--r-pill);background:var(--brand-050);
}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--accent-500);flex:0 0 auto;}
.badge .num{font-size:24px;font-weight:700;color:var(--ink-900);font-variant-numeric:tabular-nums;line-height:1;}
.badge .unit{font-size:13px;color:var(--ink-500);}
.hero-visual{position:relative;}
.hero-media{
  position:relative;border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-2);
  aspect-ratio:16/11;background:var(--brand-050);
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(13,31,36,0) 42%,rgba(13,31,36,.55) 100%);
}
.hero-float{
  position:absolute;left:20px;right:20px;bottom:20px;
  display:flex;align-items:center;gap:14px;
  padding:14px 18px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.94);backdrop-filter:blur(2px);box-shadow:var(--sh-2);
}
.hero-float img{width:64px;height:48px;object-fit:cover;border-radius:var(--r-sm);flex:0 0 auto;}
.hero-float .fnum{font-size:22px;font-weight:700;color:var(--ink-900);font-variant-numeric:tabular-nums;line-height:1.1;}
.hero-float .fdesc{font-size:13px;color:var(--ink-500);line-height:1.4;}
@media (max-width:1023px){
  .hero-visual{max-width:560px;}
  .hero-media{aspect-ratio:auto;height:300px;}
}
@media (max-width:520px){
  .hero-media{height:240px;}
  .hero-float{left:14px;right:14px;bottom:14px;padding:12px 14px;gap:10px;}
  .hero-float img{width:52px;height:40px;}
}

/* ---------- Section base ---------- */
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:72px 0;}}
@media (min-width:1024px){.section{padding:96px 0;}}
.section.bg-paper{background:var(--bg);}
.section.bg-white{background:#fff;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px;}
.section-head .head-text{max-width:640px;}
.section-tag{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand-600);text-transform:uppercase;margin-bottom:10px;
}
.section h2{font-size:clamp(24px,2.6vw,36px);line-height:1.25;}
.section-desc{margin-top:12px;font-size:16px;line-height:1.8;color:var(--ink-700);}

/* ---------- Feature asymmetric grid ---------- */
.feature-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:768px){.feature-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){
  .feature-grid{grid-template-columns:repeat(4,1fr);}
  .feature-card.is-lead{grid-column:span 2;grid-row:span 2;}
}
.feature-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;display:flex;flex-direction:column;gap:14px;
  transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D6E6E3;}
.feature-icon{
  width:44px;height:44px;border-radius:var(--r-sm);background-image:var(--grad-brand);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.feature-icon svg{width:22px;height:22px;stroke:#fff;}
.feature-card h3{font-size:20px;line-height:1.4;}
.feature-card p{font-size:15px;line-height:1.8;color:var(--ink-700);}
.feature-card .card-link{margin-top:auto;font-size:14px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px;}
.feature-card .card-link .arrow{transition:transform 180ms ease;}
.feature-card:hover .card-link .arrow{transform:translateX(5px);}
.feature-card.is-lead{
  background-image:var(--grad-brand);border-color:transparent;color:#fff;
  padding:34px;box-shadow:var(--sh-3);
}
.feature-card.is-lead h3,.feature-card.is-lead p,.feature-card.is-lead .card-link{color:#fff;}
.feature-card.is-lead p{color:rgba(255,255,255,.92);}
.feature-card.is-lead .feature-icon{background:rgba(255,255,255,.18);}
.feature-card.is-lead .lead-num{
  font-size:44px;font-weight:700;font-variant-numeric:tabular-nums;line-height:1;color:#fff;opacity:.9;
}
.feature-card.is-lead .lead-points{display:flex;flex-direction:column;gap:10px;margin-top:4px;}
.feature-card.is-lead .lead-points li{font-size:14px;color:rgba(255,255,255,.94);padding-left:18px;position:relative;}
.feature-card.is-lead .lead-points li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:#fff;opacity:.8;}

/* ---------- Zigzag scene ---------- */
.scene-row{display:grid;grid-template-columns:1fr;gap:28px;align-items:center;}
.scene-row + .scene-row{margin-top:64px;}
@media (min-width:900px){
  .scene-row{grid-template-columns:1fr 1fr;gap:56px;}
  .scene-row:nth-child(even) .scene-media{order:2;}
}
.scene-media{border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-2);background:var(--brand-050);aspect-ratio:16/10;}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease;}
.scene-media:hover img{transform:scale(1.03);}
.scene-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:50%;border:1.5px solid var(--brand-400);
  color:var(--brand-600);font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.scene-text h3{font-size:clamp(20px,2.2vw,26px);line-height:1.4;}
.scene-text p{margin-top:14px;font-size:16px;line-height:1.85;color:var(--ink-700);}
.scene-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.scene-list li{position:relative;padding-left:22px;font-size:15px;color:var(--ink-700);}
.scene-list li::before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:2px;background-image:var(--grad-brand);}

/* ---------- Case cards ---------- */
.case-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:900px){.case-grid{grid-template-columns:repeat(2,1fr);}}
.case-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;
  display:grid;grid-template-columns:1fr;gap:24px;
  transition:transform 180ms ease,box-shadow 180ms ease;
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
@media (min-width:640px){.case-card{grid-template-columns:auto 1fr;}}
.case-stats{display:flex;gap:12px;}
@media (min-width:640px){.case-stats{flex-direction:column;}}
.case-stat{
  min-width:104px;padding:14px 16px;border-radius:var(--r-md);background:var(--brand-050);
}
.case-stat .num{font-size:26px;font-weight:700;color:var(--ink-900);font-variant-numeric:tabular-nums;line-height:1.1;}
.case-stat .unit{font-size:12px;color:var(--ink-500);margin-top:4px;}
.case-body h3{font-size:20px;line-height:1.45;}
.case-body p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--ink-700);}
.tag-row{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--accent-050);color:#B24A1E;font-size:13px;font-weight:500;
}
@media (max-width:899px){
  .case-grid{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px;margin:0 -20px;padding-left:20px;padding-right:20px;}
  .case-card{flex:0 0 86vw;scroll-snap-align:start;}
}

/* ---------- Plan cards ---------- */
.plan-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:900px){.plan-grid{grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}}
.plan-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;
  display:flex;flex-direction:column;gap:18px;position:relative;
  transition:transform 180ms ease,box-shadow 180ms ease;
}
.plan-card:hover{box-shadow:var(--sh-2);}
.plan-card.is-featured{
  border:2px solid transparent;
  background-image:linear-gradient(#fff,#fff),var(--grad-brand);
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:var(--sh-3);
}
@media (min-width:900px){.plan-card.is-featured{margin-top:-12px;}}
.plan-badge{
  position:absolute;top:-14px;right:24px;height:28px;padding:0 14px;border-radius:var(--r-pill);
  background-image:var(--grad-accent);color:#fff;font-size:12px;font-weight:700;
  display:inline-flex;align-items:center;letter-spacing:.04em;
}
.plan-name{font-size:18px;font-weight:700;color:var(--ink-900);}
.plan-price{font-size:36px;font-weight:700;color:var(--ink-900);font-variant-numeric:tabular-nums;line-height:1.1;}
.plan-price small{font-size:14px;font-weight:500;color:var(--ink-500);margin-left:6px;}
.plan-note{font-size:14px;color:var(--ink-500);line-height:1.7;}
.plan-list{display:flex;flex-direction:column;gap:12px;padding-top:6px;border-top:1px solid var(--line);}
.plan-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink-700);line-height:1.65;}
.plan-list svg{width:18px;height:18px;flex:0 0 auto;margin-top:4px;stroke:var(--brand-500);}
.plan-card .btn{margin-top:auto;}

/* ---------- CMS posts ---------- */
.post-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:768px){.post-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.post-grid{grid-template-columns:repeat(3,1fr);}}
.post-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D6E6E3;}
.post-cover{display:block;aspect-ratio:16/9;background:var(--brand-050);overflow:hidden;}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease;}
.post-card:hover .post-cover img{transform:scale(1.03);}
.post-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.cat-pill{
  align-self:flex-start;display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--brand-050);color:var(--brand-700);font-size:12px;font-weight:600;
}
.post-body h3{font-size:18px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-body h3 a{transition:color 180ms ease;}
.post-card:hover .post-body h3 a{color:var(--brand-600);}
.post-body p{font-size:14px;line-height:1.75;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-500);}
.post-meta .more{color:var(--brand-600);font-weight:600;}
.empty-state{
  border:1.5px dashed var(--line);border-radius:var(--r-lg);background:#fff;
  padding:56px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px;
}
.empty-state svg{width:44px;height:44px;stroke:var(--brand-400);}
.empty-state p{font-size:15px;color:var(--ink-500);}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr;gap:16px;}
@media (min-width:900px){.faq-grid{grid-template-columns:repeat(2,1fr);gap:16px 20px;}}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;position:relative;
  transition:border-color 180ms ease,box-shadow 180ms ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;border-radius:3px;
  background-image:var(--grad-brand);opacity:0;transition:opacity 180ms ease;
}
.faq-item[open]{border-color:#D6E6E3;box-shadow:var(--sh-1);}
.faq-item[open]::before{opacity:1;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--ink-900);transition:color 180ms ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-600);}
.faq-item[open] summary{color:var(--brand-700);}
.faq-item .chev{width:20px;height:20px;flex:0 0 auto;stroke:var(--brand-600);transition:transform 180ms ease;}
.faq-item[open] .chev{transform:rotate(180deg);}
.faq-answer{padding:0 24px 20px;font-size:16px;line-height:1.8;color:var(--ink-700);}

/* ---------- CTA band ---------- */
.cta-band{
  border-radius:var(--r-xl);background-image:var(--grad-deep);color:#fff;
  padding:44px 32px;position:relative;overflow:hidden;
  display:grid;grid-template-columns:1fr;gap:26px;align-items:center;
}
@media (min-width:900px){
  .cta-band{grid-template-columns:1fr auto;padding:56px 56px;gap:40px;}
}
.cta-band::before,.cta-band::after{
  content:"";position:absolute;border-radius:50%;border:1px solid rgba(255,255,255,.16);pointer-events:none;
}
.cta-band::before{width:340px;height:340px;right:-80px;top:-140px;}
.cta-band::after{width:520px;height:520px;right:-180px;top:-230px;}
.cta-band h2{color:#fff;font-size:clamp(24px,2.6vw,32px);line-height:1.3;position:relative;}
.cta-band p{margin-top:12px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.88);max-width:620px;position:relative;}
.cta-band .cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.78);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}}
.footer-brand .brand-text{color:#fff;}
.footer-intro{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:320px;}
.footer-contact{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
.footer-contact span{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.72);}
.footer-contact svg{width:16px;height:16px;stroke:var(--brand-400);flex:0 0 auto;}
.footer-col h4{font-size:14px;color:#fff;font-weight:700;letter-spacing:.04em;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7);transition:color 180ms ease;}
.footer-col a:hover{color:var(--brand-400);}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom .fb-links{display:flex;flex-wrap:wrap;gap:20px;}
.footer-bottom a{color:rgba(255,255,255,.6);transition:color 180ms ease;}
.footer-bottom a:hover{color:var(--brand-400);}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --brand-700:#086B5C;
  --brand-600:#0A8F7D;
  --brand-500:#10B29A;
  --brand-400:#3FD3BC;
  --brand-050:#EAFBF6;
  --accent-500:#FF7A45;
  --accent-400:#FFA46B;
  --accent-050:#FFF2E9;
  --ink-900:#0D1F24;
  --ink-700:#2A4149;
  --ink-500:#5A7078;
  --line:#E3EBEA;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --grad-brand:linear-gradient(115deg,#0A8F7D 0%,#10B29A 42%,#3FD3BC 100%);
  --grad-accent:linear-gradient(120deg,#FF7A45 0%,#FFB35C 100%);
  --grad-deep:linear-gradient(135deg,#0D3B36 0%,#0A8F7D 62%,#10B29A 100%);
  --r-sm:10px; --r-md:16px; --r-lg:24px; --r-xl:32px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(13,31,36,.06);
  --sh-2:0 10px 24px -12px rgba(13,31,36,.18);
  --sh-3:0 28px 60px -28px rgba(10,143,125,.38);
  --t:180ms ease;
  --font:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--brand-700)}
button{font-family:inherit;cursor:pointer}
input{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.01em;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
svg{display:block}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:transparent;
  transition:background var(--t),box-shadow var(--t),border-color var(--t);
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.nav-wrap{
  height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;
}
@media (min-width:1024px){.nav-wrap{height:64px;gap:32px}}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:30px;height:30px;border-radius:9px;background:var(--grad-brand);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);
}
.brand-mark svg{width:17px;height:17px;stroke:#fff;fill:none}
.brand-text{font-size:18px;font-weight:700;color:var(--ink-900);letter-spacing:.01em}
.brand:hover .brand-text{color:var(--brand-600)}
.main-nav{display:none;align-items:center;gap:28px}
@media (min-width:1024px){.main-nav{display:flex}}
.nav-link{
  position:relative;font-size:15px;color:var(--ink-700);padding:4px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:-4px;height:2px;width:0;border-radius:2px;
  background:var(--grad-brand);transition:width var(--t);
}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after{width:30%}
.nav-link.active{color:var(--brand-600);font-weight:600}
.nav-link.active::after{width:100%}
.nav-tools{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);border:1.5px solid var(--line);
  background:#fff;display:inline-flex;align-items:center;justify-content:center;
  transition:border-color var(--t),background var(--t),transform var(--t);
}
.icon-btn svg{width:18px;height:18px;stroke:var(--ink-700);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.icon-btn:hover{border-color:var(--brand-500);transform:translateY(-1px)}
.icon-btn:hover svg{stroke:var(--brand-600)}
.nav-search{
  display:none;align-items:center;gap:8px;height:42px;padding:0 8px 0 16px;
  border:1px solid var(--line);border-radius:var(--r-pill);background:#fff;
  transition:border-color var(--t),box-shadow var(--t);
}
.nav-search.open{display:inline-flex}
.nav-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(16,178,154,.18)}
.nav-search input{border:0;outline:none;background:transparent;width:170px;font-size:14px;color:var(--ink-900)}
.nav-search input::placeholder{color:var(--ink-500)}
.nav-search button{
  border:0;background:var(--grad-brand);color:#fff;border-radius:var(--r-pill);
  height:30px;padding:0 14px;font-size:13px;font-weight:600;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);border:0;
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform var(--t),box-shadow var(--t),filter var(--t),border-color var(--t),color var(--t);
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-3)}
.btn-primary:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-accent{background:var(--grad-accent);color:#fff;box-shadow:var(--sh-2)}
.btn-accent:hover{color:#fff;filter:brightness(1.05);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--brand-600);padding:0 8px}
.btn-ghost svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--t)}
.btn-ghost:hover{color:var(--brand-700)}
.btn-ghost:hover svg{transform:translateX(4px)}
.btn-outline{background:#fff;border:1.5px solid var(--line);color:var(--ink-900)}
.btn-outline:hover{border-color:var(--brand-500);color:var(--brand-600)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.nav-cta{display:none}
@media (min-width:1024px){.nav-cta{display:inline-flex}}
.nav-toggle{display:inline-flex}
@media (min-width:1024px){.nav-toggle{display:none}}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(13,31,36,.45);opacity:0;pointer-events:none;
  transition:opacity var(--t);z-index:90;
}
.drawer-mask.show{opacity:1;pointer-events:auto}
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:78vw;max-width:340px;background:#fff;z-index:100;
  transform:translateX(100%);transition:transform 220ms ease;
  padding:24px 22px;display:flex;flex-direction:column;gap:20px;overflow-y:auto;
}
.mobile-drawer.show{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{
  padding:12px 10px;border-radius:var(--r-sm);color:var(--ink-700);font-size:15px;
}
.drawer-nav a:hover{background:var(--brand-050);color:var(--brand-700)}
.drawer-nav a.active{background:var(--brand-050);color:var(--brand-700);font-weight:600}
.drawer-search{display:flex;gap:8px}
.drawer-search input{
  flex:1;height:46px;border-radius:var(--r-md);border:1px solid var(--line);padding:0 14px;font-size:14px;outline:none;
}
.drawer-search input:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(16,178,154,.18)}

/* ---------- 文章页头 ---------- */
main{padding-top:56px}
@media (min-width:1024px){main{padding-top:64px}}
.article-hero{
  position:relative;
  background:
    linear-gradient(180deg,rgba(234,251,246,.92) 0%,rgba(247,246,242,.96) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding:32px 0 40px;
  border-bottom:1px solid var(--line);
}
@media (min-width:1024px){.article-hero{padding:44px 0 56px}}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-500);margin-bottom:20px;
}
.breadcrumb a{color:var(--ink-500)}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:#B9C7C6}
.breadcrumb .current{color:var(--ink-500);max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{max-width:860px}
.pill{
  display:inline-flex;align-items:center;gap:7px;height:30px;padding:0 14px;
  border-radius:var(--r-pill);background:var(--brand-050);color:var(--brand-700);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.pill .dot{width:7px;height:7px;border-radius:50%;background:var(--accent-500)}
.article-title{
  font-size:clamp(26px,3.6vw,40px);line-height:1.24;font-weight:700;
  margin:18px 0 0;color:var(--ink-900);
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;
  margin-top:22px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-500);
}
.meta-item{display:inline-flex;align-items:center;gap:7px}
.meta-item svg{width:15px;height:15px;stroke:var(--ink-500);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.share-group{display:inline-flex;align-items:center;gap:8px;margin-left:auto}
.share-btn{
  width:34px;height:34px;border-radius:50%;border:1px solid var(--line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color var(--t),transform var(--t);
}
.share-btn svg{width:15px;height:15px;stroke:var(--ink-700);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.share-btn:hover{border-color:var(--brand-500);transform:translateY(-2px)}
.share-btn:hover svg{stroke:var(--brand-600)}

/* ---------- 正文布局 ---------- */
.article-section{padding:48px 0 72px;background:var(--bg)}
@media (min-width:1024px){.article-section{padding:64px 0 96px}}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr);gap:40px;align-items:start;
}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 240px;gap:48px}
}
.article-main{min-width:0}
.article-body{
  max-width:820px;font-size:17px;line-height:1.9;color:var(--ink-700);
}
.article-body > * + *{margin-top:20px}
.article-body h2{
  position:relative;font-size:26px;line-height:1.35;margin:44px 0 0;padding-left:16px;
  scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;
  background:var(--grad-brand);
}
.article-body h3{font-size:22px;line-height:1.4;margin:32px 0 0;color:var(--ink-900);scroll-margin-top:96px}
.article-body h4{font-size:18px;margin:26px 0 0;color:var(--ink-900)}
.article-body img{border-radius:var(--r-md);width:100%;height:auto;box-shadow:var(--sh-1)}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--ink-500);text-align:center;margin-top:10px}
.article-body ul,.article-body ol{padding-left:4px}
.article-body li{position:relative;padding-left:22px;margin-top:10px}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:3px;
  background:var(--brand-500);
}
.article-body ol{counter-reset:li}
.article-body ol li::before{
  counter-increment:li;content:counter(li);position:absolute;left:0;top:.15em;
  width:20px;height:20px;border-radius:50%;background:var(--brand-050);color:var(--brand-700);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.article-body blockquote{
  margin:28px 0;padding:20px 24px;background:var(--brand-050);
  border-left:4px solid var(--brand-500);border-radius:var(--r-lg);color:var(--ink-700);
}
.article-body blockquote p{margin:0}
.article-body a{color:var(--brand-600);border-bottom:1px solid rgba(16,178,154,.4)}
.article-body a:hover{color:var(--brand-700);border-color:var(--brand-700)}
.article-body table{
  width:100%;border-collapse:collapse;border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;font-size:15px;display:block;overflow-x:auto;
}
.article-body thead{background:var(--brand-050)}
.article-body th,.article-body td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line)}
.article-body tbody tr:nth-child(even){background:#FBFCFC}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body code{
  background:var(--brand-050);color:var(--brand-700);border-radius:6px;padding:2px 7px;font-size:14px;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

.empty-state{
  max-width:820px;border:1.5px dashed var(--line);border-radius:var(--r-lg);
  background:#fff;padding:48px 28px;text-align:center;
}
.empty-state svg{width:44px;height:44px;margin:0 auto 16px;stroke:var(--brand-500);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--ink-500);font-size:15px;margin-bottom:22px}

/* 侧栏目录 */
.article-side{display:none}
@media (min-width:1024px){.article-side{display:block;position:sticky;top:96px}}
.toc-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:20px;box-shadow:var(--sh-1);
}
.toc-card h3{font-size:14px;letter-spacing:.06em;color:var(--ink-500);font-weight:600;margin-bottom:14px}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:60vh;overflow-y:auto}
.toc-link{
  display:block;font-size:14px;line-height:1.5;color:var(--ink-700);
  padding:7px 10px;border-radius:8px;border-left:2px solid transparent;
}
.toc-link:hover{background:var(--brand-050);color:var(--brand-700)}
.toc-link.current{color:var(--brand-600);border-left-color:var(--brand-500);background:var(--brand-050);font-weight:600}
.side-cta{
  margin-top:16px;background:var(--grad-brand);border-radius:var(--r-lg);padding:20px;
  color:#fff;box-shadow:var(--sh-2);
}
.side-cta p{font-size:14px;line-height:1.7;opacity:.94}
.side-cta a{
  display:inline-flex;margin-top:14px;background:#fff;color:var(--brand-700);
  border-radius:var(--r-pill);height:38px;padding:0 18px;font-size:14px;font-weight:600;
  align-items:center;transition:transform var(--t);
}
.side-cta a:hover{transform:translateY(-1px);color:var(--brand-700)}

/* 文末 */
.article-foot{max-width:820px;margin-top:48px}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;padding-top:24px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);font-size:13px;color:var(--ink-700);
  transition:border-color var(--t),color var(--t),transform var(--t);
}
.tag:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-2px)}
.nextprev{
  display:grid;grid-template-columns:1fr;gap:16px;margin-top:32px;
}
@media (min-width:640px){.nextprev{grid-template-columns:1fr 1fr}}
.np-card{
  display:flex;flex-direction:column;gap:8px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:20px 22px;transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.np-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--brand-400)}
.np-label{font-size:12px;letter-spacing:.08em;color:var(--ink-500);font-weight:600}
.np-title{font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.5}
.np-card:hover .np-title{color:var(--brand-600)}

/* 相关推荐 */
.related{padding:0 0 72px;background:var(--bg)}
@media (min-width:1024px){.related{padding:0 0 96px}}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px;
}
.section-head h2{font-size:clamp(22px,2.4vw,30px)}
.section-head p{font-size:15px;color:var(--ink-500);margin-top:8px}
.rel-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:768px){.rel-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.rel-grid{grid-template-columns:repeat(3,1fr)}}
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-400)}
.post-cover{position:relative;aspect-ratio:16/9;background:var(--brand-050);overflow:hidden}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease}
.post-card:hover .post-cover img{transform:scale(1.03)}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-cat{font-size:12px;font-weight:600;color:var(--brand-700);background:var(--brand-050);border-radius:var(--r-pill);padding:5px 12px;align-self:flex-start}
.post-title{font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.5}
.post-card:hover .post-title{color:var(--brand-600)}
.post-desc{font-size:14px;color:var(--ink-500);line-height:1.7}
.post-meta{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-500);display:flex;justify-content:space-between;align-items:center}
.post-meta span{display:inline-flex;align-items:center;gap:6px}
.post-meta svg{width:14px;height:14px;stroke:var(--ink-500);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* CTA 带 */
.cta-section{padding:0 0 72px;background:var(--bg)}
@media (min-width:1024px){.cta-section{padding:0 0 96px}}
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:var(--grad-deep);padding:40px 28px;color:#fff;box-shadow:var(--sh-3);
}
@media (min-width:1024px){.cta-band{padding:56px 56px;display:flex;align-items:center;justify-content:space-between;gap:48px}}
.cta-band::before,.cta-band::after{
  content:"";position:absolute;border-radius:50%;border:1px solid rgba(255,255,255,.16);pointer-events:none;
}
.cta-band::before{width:340px;height:340px;right:-90px;top:-140px}
.cta-band::after{width:520px;height:520px;right:-200px;bottom:-320px;border-color:rgba(255,255,255,.1)}
.cta-copy{position:relative;z-index:1;max-width:640px}
.cta-copy h2{color:#fff;font-size:clamp(22px,2.4vw,30px)}
.cta-copy p{margin-top:12px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.88)}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
@media (min-width:1024px){.cta-actions{margin-top:0;flex:0 0 auto}}

/* 页脚 */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px}}
.footer-brand .brand-text{color:#fff}
.footer-intro{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:340px}
.footer-contact{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.footer-contact span{display:inline-flex;align-items:center;gap:9px;font-size:13px;color:rgba(255,255,255,.6)}
.footer-contact svg{width:15px;height:15px;stroke:var(--brand-400);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7)}
.footer-col a:hover{color:var(--brand-400)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--ink-500);
}
.fb-links{display:flex;flex-wrap:wrap;gap:18px}
.fb-links a{color:rgba(255,255,255,.6);font-size:13px}
.fb-links a:hover{color:var(--brand-400)}

/* roulang page: category2 */
:root{
  --brand-700:#086B5C;--brand-600:#0A8F7D;--brand-500:#10B29A;--brand-400:#3FD3BC;--brand-050:#EAFBF6;
  --accent-500:#FF7A45;--accent-400:#FFA46B;--accent-050:#FFF2E9;
  --ink-900:#0D1F24;--ink-700:#2A4149;--ink-500:#5A7078;
  --line:#E3EBEA;--bg:#F7F6F2;--surface:#FFFFFF;
  --grad-brand:linear-gradient(115deg,#0A8F7D 0%,#10B29A 42%,#3FD3BC 100%);
  --grad-accent:linear-gradient(120deg,#FF7A45 0%,#FFB35C 100%);
  --grad-deep:linear-gradient(135deg,#0D3B36 0%,#0A8F7D 62%,#10B29A 100%);
  --r-sm:10px;--r-md:16px;--r-lg:24px;--r-xl:32px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(13,31,36,.06);
  --sh-2:0 10px 24px -12px rgba(13,31,36,.18);
  --sh-3:0 28px 60px -28px rgba(10,143,125,.38);
  --t:180ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink-700);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-.01em;line-height:1.25}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.18}
h2{font-size:clamp(24px,2.6vw,36px)}
h3{font-size:20px;line-height:1.4;font-weight:600}
p{margin:0}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:transparent;border-bottom:1px solid transparent;transition:background var(--t),border-color var(--t),box-shadow var(--t)}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:var(--sh-1)}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;height:56px}
@media (min-width:1024px){.nav-bar{height:64px}}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:30px;height:30px;border-radius:9px;background:var(--grad-brand);display:grid;place-items:center;box-shadow:var(--sh-3)}
.brand-mark svg{width:16px;height:16px;stroke:#fff;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-size:16px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{position:relative;font-size:15px;color:var(--ink-700);padding:4px 0;transition:color var(--t)}
.nav-link::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;border-radius:2px;background:var(--grad-brand);transition:width var(--t)}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after{width:30%}
.nav-link.active{color:var(--brand-600);font-weight:600}
.nav-link.active::after{width:100%}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;box-shadow:var(--sh-1)}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink-900);fill:none;stroke-width:2;stroke-linecap:round}
.nav-scrim{position:fixed;inset:0;background:rgba(13,31,36,.45);opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:110}
.nav-scrim.is-open{opacity:1;visibility:visible}
@media (max-width:1023px){
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:78vw;max-width:320px;background:#fff;
    flex-direction:column;align-items:stretch;gap:6px;padding:88px 24px 28px;margin:0;
    transform:translateX(102%);transition:transform 220ms ease;box-shadow:-24px 0 48px -24px rgba(13,31,36,.32);z-index:120;
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-link{font-size:16px;padding:12px 4px;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-link.active{color:var(--brand-600)}
}
@media (min-width:1024px){
  .nav-toggle{display:none}
  .nav-scrim{display:none}
}

/* ---------- buttons ---------- */
.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;white-space:nowrap;transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t),filter var(--t)}
.btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-3)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-secondary{background:#fff;border:1.5px solid var(--line);color:var(--ink-900);box-shadow:var(--sh-1)}
.btn-secondary:hover{border-color:var(--brand-500);color:var(--brand-600)}
.btn-accent{background:var(--grad-accent);color:#fff;box-shadow:0 22px 44px -22px rgba(255,122,69,.7)}
.btn-accent:hover{filter:brightness(1.05);transform:translateY(-1px)}
.btn-ghost{height:auto;padding:0;border-radius:0;color:var(--brand-600);font-weight:600}
.btn-ghost svg{transition:transform var(--t)}
.btn-ghost:hover svg{transform:translateX(4px)}
.btn-row{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- hero ---------- */
.hero{position:relative;padding:calc(56px + 44px) 0 56px;background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%)}
@media (min-width:1024px){.hero{padding:calc(64px + 56px) 0 88px}}
.hero-grid{display:grid;gap:36px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:6fr 6fr;gap:48px}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px 6px 10px;border-radius:var(--r-pill);background:var(--brand-050);color:var(--brand-700);font-size:13px;font-weight:600;border:1px solid rgba(16,178,154,.22)}
.eyebrow i{width:8px;height:8px;border-radius:50%;background:var(--accent-500);display:inline-block}
.hero h1{margin-top:20px}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.8;color:var(--ink-500);max-width:560px}
.hero .btn-row{margin-top:32px}
.hero-visual{position:relative;border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-2);background:var(--brand-050)}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform 400ms ease}
.hero-visual:hover img{transform:scale(1.03)}
.hero-chip{position:absolute;left:16px;right:16px;bottom:16px;background:rgba(255,255,255,.94);backdrop-filter:blur(6px);border-radius:var(--r-md);padding:14px 18px;display:flex;align-items:center;gap:12px;box-shadow:var(--sh-2)}
.hero-chip .dot{width:10px;height:10px;border-radius:50%;background:var(--accent-500);flex:none}
.hero-chip span{font-size:13.5px;font-weight:600;color:var(--ink-900)}

/* ---------- sections ---------- */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:72px 0}}
@media (min-width:1024px){.section{padding:96px 0}}
.section--surface{background:#fff}
.section--tint{background:var(--brand-050)}
.section--paper{background:var(--bg)}
.section-head{max-width:720px;margin-bottom:36px}
.section-head h2{margin-top:16px}
.section-head p{margin-top:14px;font-size:16px;color:var(--ink-500)}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- prep cards ---------- */
.prep-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:640px){.prep-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.prep-grid{grid-template-columns:repeat(4,1fr);gap:24px}}
.prep-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 24px;box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.prep-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(16,178,154,.35)}
.prep-icon{width:44px;height:44px;border-radius:var(--r-sm);background:var(--grad-brand);display:grid;place-items:center;box-shadow:var(--sh-2)}
.prep-icon svg{width:22px;height:22px;stroke:#fff;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.prep-card h3{margin-top:18px;font-size:18px}
.prep-card p{margin-top:10px;font-size:15px;color:var(--ink-500);line-height:1.8}

/* ---------- flow steps ---------- */
.flow-list{max-width:880px;margin:0 auto}
.flow-item{display:grid;grid-template-columns:52px 1fr;gap:16px;position:relative;padding-bottom:28px}
@media (min-width:768px){.flow-item{grid-template-columns:64px 1fr;gap:20px;padding-bottom:32px}}
.flow-item:last-child{padding-bottom:0}
.flow-marker{position:relative;display:flex;justify-content:center}
.flow-num{width:44px;height:44px;border-radius:50%;background:var(--grad-brand);color:#fff;display:grid;place-items:center;font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;box-shadow:var(--sh-3);flex:none;z-index:1}
.flow-marker::after{content:"";position:absolute;top:54px;bottom:-6px;left:50%;transform:translateX(-50%);border-left:1px dashed var(--brand-400);opacity:.65}
.flow-item:last-child .flow-marker::after{display:none}
.flow-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px 24px 26px;box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.flow-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(16,178,154,.35)}
@media (min-width:768px){.flow-card{padding:28px 32px 30px}}
.flow-card h3{font-size:20px}
.flow-card>p{margin-top:12px;font-size:15.5px;color:var(--ink-700);line-height:1.85}
.flow-points{margin-top:16px;display:grid;gap:9px}
.flow-points li{position:relative;padding-left:20px;font-size:14.5px;color:var(--ink-500);line-height:1.7}
.flow-points li::before{content:"";position:absolute;left:0;top:.58em;width:8px;height:8px;border-radius:3px;background:var(--brand-400)}
.flow-tag{display:inline-block;margin-bottom:12px;padding:4px 12px;border-radius:var(--r-pill);background:var(--accent-050);color:#C2461A;font-size:12.5px;font-weight:600}

/* ---------- branch cards ---------- */
.branch-grid{display:grid;gap:22px;grid-template-columns:1fr}
@media (min-width:900px){.branch-grid{grid-template-columns:repeat(2,1fr);gap:26px}}
.branch-card{border-radius:var(--r-xl);padding:32px 30px;border:1px solid var(--line);background:#fff;box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t)}
.branch-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.branch-card--deep{background:var(--grad-deep);border-color:transparent;color:rgba(255,255,255,.86)}
.branch-card--deep h3{color:#fff}
.branch-head{display:flex;align-items:center;gap:12px}
.branch-head .mark{width:36px;height:36px;border-radius:12px;display:grid;place-items:center;flex:none}
.branch-head .mark svg{width:18px;height:18px;fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.mark--ok{background:var(--brand-050)}
.mark--ok svg{stroke:var(--brand-600)}
.mark--warn{background:rgba(255,255,255,.16)}
.mark--warn svg{stroke:#fff}
.branch-card h3{font-size:20px}
.branch-card>p{margin-top:16px;font-size:15.5px;line-height:1.85}
.branch-card--deep>p{color:rgba(255,255,255,.82)}
.branch-list{margin-top:18px;display:grid;gap:10px}
.branch-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;line-height:1.7}
.branch-list li span{flex:none;font-weight:700;font-variant-numeric:tabular-nums;color:var(--brand-600)}
.branch-card--deep .branch-list li{color:rgba(255,255,255,.84)}
.branch-card--deep .branch-list li span{color:var(--brand-400)}

/* ---------- deep data band ---------- */
.deep-band{position:relative;overflow:hidden;border-radius:var(--r-xl);background:var(--grad-deep);color:#fff;padding:40px 28px}
@media (min-width:768px){.deep-band{padding:52px 48px}}
.deep-band::after{content:"";position:absolute;right:-80px;top:-100px;width:300px;height:300px;border-radius:50%;border:1px solid rgba(255,255,255,.16);box-shadow:0 0 0 42px rgba(255,255,255,.05),0 0 0 96px rgba(255,255,255,.035);pointer-events:none}
.deep-band h2{color:#fff;max-width:560px;position:relative;z-index:1}
.deep-band>p{margin-top:14px;max-width:620px;font-size:15.5px;color:rgba(255,255,255,.82);position:relative;z-index:1}
.stat-grid{margin-top:36px;display:grid;gap:16px;grid-template-columns:1fr;position:relative;z-index:1}
@media (min-width:640px){.stat-grid{grid-template-columns:repeat(3,1fr)}}
.stat{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:var(--r-md);padding:20px 22px}
.stat-num{display:flex;align-items:baseline;gap:5px;font-size:clamp(28px,3vw,40px);font-weight:700;font-variant-numeric:tabular-nums;line-height:1;color:#fff}
.stat-num em{font-style:normal;font-size:14px;font-weight:600;opacity:.85}
.stat-desc{margin-top:12px;font-size:13.5px;line-height:1.7;color:rgba(255,255,255,.8)}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;gap:14px;grid-template-columns:1fr}
@media (min-width:900px){.faq-grid{grid-template-columns:repeat(2,1fr);gap:16px}}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;transition:box-shadow var(--t),border-color var(--t),background var(--t)}
.faq-item:hover{border-color:rgba(16,178,154,.4)}
.faq-item[open]{border-color:rgba(16,178,154,.5);box-shadow:inset 3px 0 0 var(--brand-500),var(--sh-2)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 22px;font-size:16px;font-weight:600;color:var(--ink-900);transition:color var(--t)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"";width:9px;height:9px;border-right:2px solid var(--brand-600);border-bottom:2px solid var(--brand-600);transform:rotate(45deg);margin-top:-5px;transition:transform var(--t),margin var(--t);flex:none}
.faq-item[open] summary{color:var(--brand-700)}
.faq-item[open] summary::after{transform:rotate(-135deg);margin-top:4px}
.faq-body{padding:0 22px 22px;font-size:15.5px;line-height:1.85;color:var(--ink-700)}

/* ---------- CTA band ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:var(--r-xl);background:var(--grad-deep);color:#fff;padding:40px 28px;display:grid;gap:28px;align-items:center}
@media (min-width:900px){.cta-band{grid-template-columns:1.5fr auto;padding:52px}}
.cta-band::after{content:"";position:absolute;right:-70px;top:-90px;width:280px;height:280px;border-radius:50%;border:1px solid rgba(255,255,255,.16);box-shadow:0 0 0 40px rgba(255,255,255,.05),0 0 0 92px rgba(255,255,255,.035);pointer-events:none}
.cta-band h2{color:#fff;position:relative;z-index:1}
.cta-band p{margin-top:14px;font-size:15.5px;color:rgba(255,255,255,.84);position:relative;z-index:1;max-width:620px}
.cta-band .btn-row{position:relative;z-index:1}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding-top:64px;margin-top:0}
.footer-grid{display:grid;gap:36px;grid-template-columns:1fr}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1fr;gap:48px}}
.footer-brand .brand-text{color:#fff}
.footer-intro{margin-top:18px;font-size:14px;line-height:1.85;max-width:340px;color:rgba(255,255,255,.66)}
.footer-contact{margin-top:20px;display:grid;gap:10px;font-size:13.5px}
.footer-contact span{display:flex;align-items:center;gap:8px}
.footer-contact svg{width:16px;height:16px;stroke:var(--brand-400);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color var(--t)}
.footer-col a:hover{color:var(--brand-400)}
.footer-bottom{margin-top:52px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0 30px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-500)}
.fb-links{display:flex;flex-wrap:wrap;gap:18px}
.fb-links a{font-size:13px;color:rgba(255,255,255,.6);transition:color var(--t)}
.fb-links a:hover{color:var(--brand-400)}

/* roulang page: category1 */
:root{
  --brand-700:#086B5C;
  --brand-600:#0A8F7D;
  --brand-500:#10B29A;
  --brand-400:#3FD3BC;
  --brand-050:#EAFBF6;
  --accent-500:#FF7A45;
  --accent-400:#FFA46B;
  --accent-050:#FFF2E9;
  --ink-900:#0D1F24;
  --ink-700:#2A4149;
  --ink-500:#5A7078;
  --line:#E3EBEA;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --grad-brand:linear-gradient(115deg,#0A8F7D 0%,#10B29A 42%,#3FD3BC 100%);
  --grad-accent:linear-gradient(120deg,#FF7A45 0%,#FFB35C 100%);
  --grad-deep:linear-gradient(135deg,#0D3B36 0%,#0A8F7D 62%,#10B29A 100%);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(13,31,36,.06);
  --sh-2:0 10px 24px -12px rgba(13,31,36,.18);
  --sh-3:0 28px 60px -28px rgba(10,143,125,.38);
  --t:180ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-700);text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t);}
a:hover{color:var(--brand-500);}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-0.01em;font-weight:700;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.container{padding:0 32px;}}

/* ---------- Header / Nav ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background var(--t),box-shadow var(--t),border-color var(--t);
}
.site-header.is-scrolled{
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.nav-inner{
  height:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
@media (min-width:1024px){.nav-inner{height:64px;}}
.nav-left,.nav-right{display:flex;align-items:center;}
.nav-left{gap:28px;min-width:0;}
.nav-right{gap:14px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:30px;height:30px;
  border-radius:9px;
  background:var(--grad-brand);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-1);
  flex-shrink:0;
}
.brand-mark svg{width:17px;height:17px;stroke:#fff;fill:none;stroke-width:1.9;}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-0.01em;white-space:nowrap;}
.main-nav{display:none;align-items:center;gap:26px;}
@media (min-width:1024px){.main-nav{display:flex;}}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--ink-700);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;left:0;bottom:0;
  height:2px;width:0;
  border-radius:2px;
  background:var(--grad-brand);
  transition:width var(--t);
}
.nav-link:hover{color:var(--brand-600);}
.nav-link:hover::after{width:30%;}
.nav-link.active{color:var(--brand-600);font-weight:600;}
.nav-link.active::after{width:100%;}

.search-wrap{
  display:none;
  align-items:center;
  position:relative;
}
@media (min-width:768px){.search-wrap{display:flex;}}
.search-toggle{
  width:40px;height:40px;
  border-radius:var(--r-pill);
  display:flex;align-items:center;justify-content:center;
  border:1px solid transparent;
  transition:background var(--t),border-color var(--t);
}
.search-toggle svg{width:18px;height:18px;stroke:var(--ink-700);fill:none;stroke-width:1.9;}
.search-toggle:hover{background:var(--brand-050);}
.search-field{
  width:0;opacity:0;
  transition:width var(--t),opacity var(--t),margin var(--t);
  overflow:hidden;
}
.search-wrap.open .search-field{width:220px;opacity:1;margin-left:8px;}
.search-field input{
  width:100%;height:40px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:#fff;
  padding:0 16px;
  font-size:14px;
  outline:none;
  transition:border-color var(--t),box-shadow var(--t);
}
.search-field input::placeholder{color:var(--ink-500);}
.search-field input:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(16,178,154,.18);}
.nav-toggle{
  width:40px;height:40px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:#fff;
  display:flex;align-items:center;justify-content:center;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink-900);fill:none;stroke-width:2;}
@media (min-width:1024px){.nav-toggle{display:none;}}

.drawer{
  position:fixed;top:0;right:0;bottom:0;
  width:78vw;max-width:340px;
  background:#fff;
  z-index:120;
  transform:translateX(102%);
  transition:transform 220ms ease;
  padding:22px 22px 32px;
  display:flex;flex-direction:column;
  gap:22px;
  box-shadow:-20px 0 50px -30px rgba(13,31,36,.4);
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:38px;height:38px;border-radius:var(--r-sm);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;}
.drawer-close svg{width:18px;height:18px;stroke:var(--ink-900);fill:none;stroke-width:2;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  padding:12px 14px;
  border-radius:var(--r-md);
  font-size:16px;
  color:var(--ink-700);
  border:1px solid transparent;
}
.drawer-nav a:hover{background:var(--brand-050);color:var(--brand-700);}
.drawer-nav a.active{background:var(--brand-050);color:var(--brand-700);font-weight:600;border-color:#CFEFE7;}
.drawer-search input{
  width:100%;height:48px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  padding:0 16px;
  outline:none;
}
.drawer-search input:focus{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(16,178,154,.18);}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(13,31,36,.45);
  z-index:110;
  opacity:0;visibility:hidden;
  transition:opacity var(--t),visibility var(--t);
}
.drawer-mask.open{opacity:1;visibility:visible;}

/* ---------- Buttons ---------- */
.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;
  white-space:nowrap;
  border:1.5px solid transparent;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t),filter var(--t);
}
.btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-3);}
.btn-primary:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-secondary{background:#fff;border-color:var(--line);color:var(--ink-900);}
.btn-secondary:hover{border-color:var(--brand-500);color:var(--brand-600);}
.btn-accent{background:var(--grad-accent);color:#fff;box-shadow:var(--sh-2);}
.btn-accent:hover{color:#fff;filter:brightness(1.05);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--brand-600);padding:0;height:auto;font-weight:600;}
.btn-ghost svg{transition:transform var(--t);}
.btn-ghost:hover{color:var(--brand-700);}
.btn-ghost:hover svg{transform:translateX(4px);}

/* ---------- Page head ---------- */
.page-head{
  background:linear-gradient(180deg,#EAFBF6 0%,#F4FBF8 62%,var(--bg) 100%);
  padding:calc(56px + 34px) 0 46px;
  position:relative;
  overflow:hidden;
}
@media (min-width:1024px){.page-head{padding:calc(64px + 54px) 0 64px;}}
.page-head::after{
  content:"";
  position:absolute;
  right:-140px;top:-80px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(63,211,188,.28),rgba(63,211,188,0) 68%);
  pointer-events:none;
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;
  color:var(--ink-500);
  margin-bottom:20px;
  flex-wrap:wrap;
  position:relative;z-index:1;
}
.breadcrumb a{color:var(--ink-500);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb .sep{color:#B9C7C6;}
.breadcrumb .current{color:var(--ink-500);}
.head-grid{
  position:relative;z-index:1;
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  align-items:end;
}
@media (min-width:1024px){.head-grid{grid-template-columns:1.35fr 1fr;gap:48px;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;
  padding:0 15px;
  border-radius:var(--r-pill);
  background:#fff;
  border:1px solid #CFEFE7;
  color:var(--brand-700);
  font-size:13px;
  font-weight:600;
  margin-bottom:20px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--accent-500);}
.page-title{
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.18;
  letter-spacing:-0.01em;
  margin-bottom:18px;
}
.page-lead{
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  max-width:620px;
}
.badge-stack{
  display:grid;
  grid-template-columns:1fr;
  gap:14px;
}
@media (min-width:520px){.badge-stack{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.badge-stack{grid-template-columns:1fr;}}
.stat-badge{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:20px 22px;
  box-shadow:var(--sh-1);
  position:relative;
  overflow:hidden;
}
.stat-badge::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--grad-brand);
}
.stat-num{
  font-size:34px;
  font-weight:700;
  color:var(--ink-900);
  font-variant-numeric:tabular-nums;
  line-height:1.1;
  display:flex;align-items:baseline;gap:6px;
}
.stat-num span{font-size:14px;font-weight:600;color:var(--brand-600);}
.stat-desc{font-size:13px;color:var(--ink-500);margin-top:6px;line-height:1.7;}

/* ---------- Layout with sidebar ---------- */
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:72px 0;}}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-alt{background:#fff;}
.section-head{max-width:760px;margin-bottom:32px;}
@media (min-width:1024px){.section-head{margin-bottom:44px;}}
.section-head h2{font-size:clamp(24px,2.6vw,36px);line-height:1.25;}
.section-head p{margin-top:14px;color:var(--ink-500);font-size:15.5px;}

.layout{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  align-items:start;
}
@media (min-width:1024px){.layout{grid-template-columns:250px 1fr;gap:44px;}}
.side-nav{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:22px;
  box-shadow:var(--sh-1);
}
@media (min-width:1024px){.side-nav{position:sticky;top:88px;}}
.side-nav h3{font-size:14px;color:var(--ink-500);font-weight:600;letter-spacing:.02em;margin-bottom:14px;}
.side-nav ul{display:flex;flex-wrap:wrap;gap:6px;}
@media (min-width:1024px){.side-nav ul{flex-direction:column;flex-wrap:nowrap;gap:2px;}}
.side-nav a{
  display:block;
  font-size:14.5px;
  color:var(--ink-700);
  padding:9px 12px;
  border-radius:var(--r-sm);
  border-left:3px solid transparent;
}
.side-nav a:hover{background:var(--brand-050);color:var(--brand-700);border-left-color:var(--brand-400);}
.side-note{
  margin-top:18px;padding-top:18px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-500);line-height:1.75;
}
.side-note a{font-weight:600;}

/* ---------- Row cards ---------- */
.row-list{display:flex;flex-direction:column;gap:16px;}
.row-card{
  display:grid;
  grid-template-columns:112px 1fr;
  gap:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:16px;
  box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
@media (min-width:640px){.row-card{grid-template-columns:160px 1fr;gap:20px;padding:18px;}}
.row-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CFEFE7;}
.row-thumb{
  width:100%;
  aspect-ratio:16/11;
  border-radius:14px;
  overflow:hidden;
  background:var(--brand-050);
  position:relative;
}
.row-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t);}
.row-card:hover .row-thumb img{transform:scale(1.03);}
.row-body{display:flex;flex-direction:column;gap:8px;min-width:0;}
.row-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.pill{
  display:inline-flex;align-items:center;
  height:24px;padding:0 11px;
  border-radius:var(--r-pill);
  background:var(--brand-050);
  color:var(--brand-700);
  font-size:12px;
  font-weight:600;
}
.pill-orange{background:var(--accent-050);color:#C7521F;}
.row-title{
  font-size:18px;
  line-height:1.4;
  font-weight:600;
}
@media (min-width:640px){.row-title{font-size:20px;}}
.row-desc{font-size:14.5px;color:var(--ink-700);line-height:1.75;}
.row-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--ink-500);}
.row-meta .link{color:var(--brand-600);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.row-meta .link svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2;transition:transform var(--t);}
.row-meta .link:hover svg{transform:translateX(3px);}

/* ---------- Checklist ---------- */
.check-list{
  display:grid;
  gap:14px;
  grid-template-columns:1fr;
}
@media (min-width:768px){.check-list{grid-template-columns:repeat(2,1fr);gap:18px;}}
.check-item{
  display:flex;gap:14px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:22px;
  box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t);
}
.check-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.check-icon{
  width:36px;height:36px;flex-shrink:0;
  border-radius:var(--r-sm);
  background:var(--grad-brand);
  display:flex;align-items:center;justify-content:center;
}
.check-icon svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:2.4;}
.check-item h3{font-size:17px;margin-bottom:6px;}
.check-item p{font-size:14px;color:var(--ink-500);line-height:1.75;}

/* ---------- Steps strip ---------- */
.steps{
  display:grid;
  grid-template-columns:1fr;
  gap:18px;
  margin-top:36px;
}
@media (min-width:768px){.steps{grid-template-columns:repeat(3,1fr);}}
.step{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:24px;
  position:relative;
  box-shadow:var(--sh-1);
}
.step-num{
  width:44px;height:44px;
  border-radius:50%;
  border:2px solid #CFEFE7;
  color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.step h3{font-size:18px;margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--ink-500);line-height:1.78;}

/* ---------- Tag cloud ---------- */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px;}
.tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;
  border-radius:var(--r-pill);
  background:#fff;
  border:1px solid var(--line);
  font-size:14px;
  color:var(--ink-700);
  transition:border-color var(--t),color var(--t),transform var(--t);
}
.tag:hover{border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-2px);}
.tag i{width:7px;height:7px;border-radius:50%;background:var(--accent-500);display:inline-block;}

.info-card{
  background:var(--brand-050);
  border:1px solid #CFEFE7;
  border-radius:var(--r-xl);
  padding:28px;
  margin-top:32px;
}
@media (min-width:768px){.info-card{padding:36px;}}
.info-card h3{font-size:20px;margin-bottom:12px;}
.info-card p{font-size:15px;color:var(--ink-700);line-height:1.85;}

/* ---------- FAQ ---------- */
.faq-list{
  display:grid;
  grid-template-columns:1fr;
  gap:14px;
}
@media (min-width:1024px){.faq-list{grid-template-columns:repeat(2,1fr);gap:18px;align-items:start;}}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item.open{border-color:#CFEFE7;box-shadow:var(--sh-2);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  text-align:left;
  padding:20px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  line-height:1.6;
}
.faq-item.open .faq-q{color:var(--brand-700);}
.faq-q .chev{
  width:26px;height:26px;flex-shrink:0;
  border-radius:50%;
  background:var(--brand-050);
  display:flex;align-items:center;justify-content:center;
  transition:transform var(--t),background var(--t);
}
.faq-q .chev svg{width:14px;height:14px;stroke:var(--brand-600);fill:none;stroke-width:2.4;}
.faq-item.open .chev{transform:rotate(180deg);background:var(--brand-100,#D8F4EC);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 220ms ease;
}
.faq-a-inner{
  padding:0 22px 20px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--ink-700);
  border-left:3px solid transparent;
}
.faq-item.open .faq-a-inner{border-left-color:var(--brand-400);margin-left:22px;padding-left:16px;}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--grad-deep);
  border-radius:var(--r-xl);
  padding:40px 28px;
  position:relative;
  overflow:hidden;
  display:grid;
  grid-template-columns:1fr;
  gap:26px;
  align-items:center;
}
@media (min-width:1024px){.cta-band{padding:52px 52px;grid-template-columns:1fr auto;gap:40px;}}
.cta-band::before{
  content:"";
  position:absolute;right:-90px;bottom:-140px;
  width:360px;height:360px;border-radius:50%;
  border:1px solid rgba(255,255,255,.22);
  pointer-events:none;
}
.cta-band::after{
  content:"";
  position:absolute;right:20px;bottom:-90px;
  width:240px;height:240px;border-radius:50%;
  border:1px solid rgba(255,255,255,.14);
  pointer-events:none;
}
.cta-band h2{color:#fff;font-size:clamp(23px,2.6vw,32px);line-height:1.3;position:relative;z-index:1;}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;margin-top:12px;max-width:600px;position:relative;z-index:1;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--ink-900);
  color:rgba(255,255,255,.72);
  padding-top:64px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
  padding-bottom:44px;
}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:44px;}}
.site-footer .brand-text{color:#fff;}
.footer-brand .brand{margin-bottom:18px;}
.footer-intro{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:340px;}
.footer-contact{display:flex;flex-direction:column;gap:10px;margin-top:22px;font-size:13.5px;color:rgba(255,255,255,.6);}
.footer-contact span{display:flex;align-items:center;gap:9px;}
.footer-contact svg{width:16px;height:16px;stroke:var(--brand-400);fill:none;stroke-width:1.9;flex-shrink:0;}
.footer-col h4{
  color:#fff;
  font-size:15px;
  margin-bottom:16px;
  font-weight:600;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-col a:hover{color:var(--brand-400);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;
  display:flex;
  flex-direction:column;
  gap:12px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}
@media (min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}}
.fb-links{display:flex;flex-wrap:wrap;gap:18px;}
.fb-links a{color:rgba(255,255,255,.5);}
.fb-links a:hover{color:var(--brand-400);}

/* roulang page: category3 */
:root{
  --brand-700:#086B5C;
  --brand-600:#0A8F7D;
  --brand-500:#10B29A;
  --brand-400:#3FD3BC;
  --brand-050:#EAFBF6;
  --accent-500:#FF7A45;
  --accent-400:#FFA46B;
  --accent-050:#FFF2E9;
  --ink-900:#0D1F24;
  --ink-700:#2A4149;
  --ink-500:#5A7078;
  --line:#E3EBEA;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --grad-brand:linear-gradient(115deg,#0A8F7D 0%,#10B29A 42%,#3FD3BC 100%);
  --grad-accent:linear-gradient(120deg,#FF7A45 0%,#FFB35C 100%);
  --grad-deep:linear-gradient(135deg,#0D3B36 0%,#0A8F7D 62%,#10B29A 100%);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(13,31,36,.06);
  --sh-2:0 10px 24px -12px rgba(13,31,36,.18);
  --sh-3:0 28px 60px -28px rgba(10,143,125,.38);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.site-header.is-solid{
  background:#FFFFFF;
  border-bottom-color:var(--line);
  box-shadow:var(--sh-1);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:56px}
@media (min-width:1024px){.header-inner{height:64px}}
.header-left{display:flex;align-items:center;min-width:0}
.header-right{display:flex;align-items:center;gap:14px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:30px;height:30px;border-radius:10px;background:var(--grad-brand);
  display:grid;place-items:center;box-shadow:var(--sh-1);flex:0 0 auto;
}
@media (min-width:1024px){.brand-mark{width:32px;height:32px}}
.brand-mark svg{width:17px;height:17px;stroke:#fff;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:none}
@media (min-width:1024px){
  .main-nav{display:flex;align-items:center;gap:28px;margin-left:40px}
}
.nav-link{position:relative;display:inline-block;font-size:15px;color:var(--ink-700);padding:6px 0;transition:color .18s ease}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;border-radius:2px;
  background:var(--grad-brand);transition:width .18s ease;
}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after{width:30%}
.nav-link.active{color:var(--brand-600);font-weight:600}
.nav-link.active::after{width:100%}
.search-wrap{display:none;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);padding:0 12px;height:40px;transition:border-color .18s ease,box-shadow .18s ease}
@media (min-width:768px){.search-wrap{display:inline-flex}}
.search-wrap:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(16,178,154,.16)}
.search-wrap svg{width:16px;height:16px;stroke:var(--ink-500);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}
.search-wrap input{width:130px;border:0;background:transparent;font-size:14px;height:38px;transition:width .18s ease}
.search-wrap input:focus{outline:none;width:200px}
.search-wrap input::placeholder{color:var(--ink-500)}
.header-cta{display:none}
@media (min-width:1024px){.header-cta{display:inline-flex}}
.menu-toggle{
  display:grid;place-items:center;width:40px;height:40px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:#fff;
}
.menu-toggle svg{width:20px;height:20px;stroke:var(--ink-900);fill:none;stroke-width:2;stroke-linecap:round}
@media (min-width:1024px){.menu-toggle{display:none}}

/* 抽屉 */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:78vw;max-width:340px;z-index:100;
  background:#fff;padding:24px 22px;transform:translateX(105%);
  transition:transform .22s ease;overflow-y:auto;box-shadow:var(--sh-2);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{width:36px;height:36px;border-radius:var(--r-sm);border:1px solid var(--line);display:grid;place-items:center}
.drawer-close svg{width:18px;height:18px;stroke:var(--ink-900);fill:none;stroke-width:2;stroke-linecap:round}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:24px}
.drawer-nav a{padding:12px 14px;border-radius:var(--r-md);font-size:16px;color:var(--ink-700);transition:background .18s ease,color .18s ease}
.drawer-nav a:hover{background:var(--brand-050);color:var(--brand-700)}
.drawer-nav a.active{background:var(--brand-050);color:var(--brand-700);font-weight:600}
.drawer-search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:var(--r-pill);padding:0 14px;height:44px;margin-bottom:18px}
.drawer-search svg{width:16px;height:16px;stroke:var(--ink-500);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.drawer-search input{border:0;background:transparent;width:100%;height:42px;font-size:15px}
.drawer-search input:focus{outline:none}
.drawer .btn{width:100%}
.drawer-mask{
  position:fixed;inset:0;background:rgba(13,31,36,.45);z-index:90;opacity:0;visibility:hidden;
  transition:opacity .22s ease,visibility .22s ease;
}
.drawer-mask.show{opacity:1;visibility:visible}

/* ---------- 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;letter-spacing:0;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-3)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-secondary{background:#fff;border:1.5px solid var(--line);color:var(--ink-900)}
.btn-secondary:hover{border-color:var(--brand-500);color:var(--brand-600)}
.btn-accent{background:var(--grad-accent);color:#fff;box-shadow:var(--sh-2)}
.btn-accent:hover{filter:brightness(1.05);transform:translateY(-1px)}
.btn-accent:active{transform:translateY(1px)}
.btn-ghost{height:auto;padding:0;color:var(--brand-600)}
.btn-ghost:hover{color:var(--brand-700)}
.btn-ghost svg{transition:transform .18s ease}
.btn-ghost:hover svg{transform:translateX(4px)}

/* ---------- 通用 ---------- */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:72px 0}}
@media (min-width:1024px){.section{padding:88px 0}}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;margin-bottom:12px}
.section-head p{font-size:16px;line-height:1.8;color:var(--ink-500)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:22px}
.breadcrumb a{transition:color .18s ease}
.breadcrumb a:hover{color:#fff}
.breadcrumb span.sep{opacity:.55}
.breadcrumb .current{color:rgba(255,255,255,.92)}

/* ---------- Hero ---------- */
.page-hero{padding:92px 0 0}
@media (min-width:1024px){.page-hero{padding:112px 0 0}}
.hero-card{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);
  background:var(--grad-deep);
  color:#fff;
  padding:36px 24px 32px;
  box-shadow:var(--sh-3);
}
@media (min-width:768px){.hero-card{padding:48px 40px 44px}}
@media (min-width:1024px){.hero-card{padding:56px 48px 48px}}
.hero-card::before{
  content:"";position:absolute;right:-160px;bottom:-190px;width:440px;height:440px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,69,.30),transparent 66%);
}
.hero-card::after{
  content:"";position:absolute;right:-120px;top:-150px;width:460px;height:460px;border-radius:50%;
  border:1px solid rgba(255,255,255,.16);
  background:radial-gradient(circle,rgba(255,255,255,.10),transparent 64%);
}
.hero-inner{position:relative;z-index:1;max-width:860px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.2);
  font-size:13px;font-weight:600;color:#fff;margin-bottom:20px;
}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--accent-400);flex:0 0 auto}
.hero-card h1{
  font-size:clamp(28px,4.2vw,48px);line-height:1.18;font-weight:700;
  letter-spacing:-.01em;color:#fff;margin-bottom:18px;
}
.hero-lead{font-size:16px;line-height:1.85;color:rgba(255,255,255,.86);max-width:720px}
@media (min-width:768px){.hero-lead{font-size:17px}}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.stat{
  flex:1 1 190px;display:flex;align-items:flex-start;gap:12px;
  padding:16px 18px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);
}
.stat .mark{width:8px;height:8px;border-radius:50%;background:var(--accent-400);margin-top:9px;flex:0 0 auto}
.stat-num{font-size:26px;line-height:1.05;font-weight:700;font-variant-numeric:tabular-nums;color:#fff}
@media (min-width:768px){.stat-num{font-size:30px}}
.stat-unit{font-size:13px;font-weight:600;color:rgba(255,255,255,.86);margin-left:3px}
.stat-desc{font-size:13px;line-height:1.6;color:rgba(255,255,255,.76);margin-top:5px}

/* ---------- 说明型内容卡 ---------- */
.explain{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);
  box-shadow:var(--sh-1);overflow:hidden;
  display:grid;gap:0;
}
@media (min-width:1024px){.explain{grid-template-columns:1.05fr .95fr}}
.explain-body{padding:32px 24px}
@media (min-width:768px){.explain-body{padding:44px 40px}}
.explain-body h2{font-size:clamp(22px,2.4vw,30px);line-height:1.28;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;margin-bottom:16px}
.explain-body p{font-size:16px;line-height:1.85;color:var(--ink-700);margin-bottom:14px}
.checklist{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.checklist li{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.75;color:var(--ink-700)}
.checklist .tick{
  width:22px;height:22px;border-radius:8px;background:var(--brand-050);flex:0 0 auto;
  display:grid;place-items:center;margin-top:3px;
}
.checklist .tick svg{width:13px;height:13px;stroke:var(--brand-600);fill:none;stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round}
.explain-media{position:relative;min-height:240px;background:var(--brand-050)}
.explain-media img{width:100%;height:100%;object-fit:cover;min-height:240px}
.explain-media .tag{
  position:absolute;left:18px;bottom:18px;
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-pill);
  background:rgba(13,31,36,.72);color:#fff;font-size:13px;font-weight:600;
}
.explain-media .tag .dot{width:7px;height:7px;border-radius:50%;background:var(--accent-400)}

/* ---------- 现象定位三卡 ---------- */
.grid-cards{display:grid;gap:20px}
@media (min-width:768px){.grid-cards{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.grid-cards{grid-template-columns:repeat(3,1fr);gap:24px}}
.f-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.f-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D6E6E3}
.icon-block{
  width:44px;height:44px;border-radius:var(--r-sm);background:var(--grad-brand);
  display:grid;place-items:center;margin-bottom:18px;box-shadow:var(--sh-1);
}
.icon-block svg{width:22px;height:22px;stroke:#fff;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.f-card h3{font-size:19px;line-height:1.4;font-weight:600;color:var(--ink-900);margin-bottom:10px}
.f-card p{font-size:15px;line-height:1.8;color:var(--ink-700)}
.f-card .mini-list{margin-top:14px;display:flex;flex-direction:column;gap:8px;font-size:14px;color:var(--ink-500)}
.f-card .mini-list li{padding-left:14px;position:relative}
.f-card .mini-list li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;background:var(--brand-400);
}

/* ---------- FAQ ---------- */
.faq-section{background:var(--brand-050)}
.faq-grid{display:grid;gap:14px}
@media (min-width:1024px){.faq-grid{grid-template-columns:repeat(2,1fr);gap:18px 20px;align-items:start}}
.faq-item{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:box-shadow .18s ease,transform .18s ease;
}
.faq-item:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.55;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;
  background:var(--grad-brand);opacity:0;transition:opacity .18s ease;
}
.faq-item[open] summary{color:var(--brand-700)}
.faq-item[open] summary::before{opacity:1}
.faq-item .chev{flex:0 0 auto;width:20px;height:20px;stroke:var(--ink-500);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease,stroke .18s ease}
.faq-item[open] .chev{transform:rotate(180deg);stroke:var(--brand-600)}
.faq-body{padding:0 22px 20px;font-size:16px;line-height:1.8;color:var(--ink-700)}
.faq-body p+p{margin-top:10px}

/* ---------- 表单卡 ---------- */
.form-section{padding:56px 0}
@media (min-width:1024px){.form-section{padding:88px 0}}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);
  box-shadow:var(--sh-2);padding:28px 22px;
}
@media (min-width:768px){.form-card{padding:40px}}
.form-layout{display:grid;gap:32px}
@media (min-width:1024px){.form-layout{grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start}}
.form-intro h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;margin-bottom:14px}
.form-intro p{font-size:15px;line-height:1.85;color:var(--ink-500)}
.form-intro img{border-radius:var(--r-md);margin-top:24px;width:100%;height:200px;object-fit:cover}
.fields{display:grid;gap:18px}
@media (min-width:768px){.fields.two{grid-template-columns:1fr 1fr}}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:14px;font-weight:600;color:var(--ink-900)}
.field input,.field textarea{
  width:100%;height:48px;border:1px solid var(--line);border-radius:var(--r-md);
  padding:0 16px;font-size:15px;background:#fff;color:var(--ink-900);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;min-height:124px;padding:13px 16px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-500)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(16,178,154,.18)}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:4px}
.form-note{font-size:13px;color:var(--ink-500)}
.form-tip{
  display:none;margin-top:16px;padding:14px 16px;border-radius:var(--r-md);
  background:var(--brand-050);border-left:4px solid var(--brand-500);
  font-size:14px;color:var(--brand-700);
}
.form-tip.show{display:block}

/* ---------- 底部 CTA ---------- */
.cta-section{padding:0 0 72px}
@media (min-width:1024px){.cta-section{padding:0 0 96px}}
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);background:var(--grad-deep);color:#fff;
  padding:36px 24px;box-shadow:var(--sh-3);
  display:flex;flex-direction:column;gap:24px;
}
@media (min-width:768px){.cta-band{padding:48px 40px;flex-direction:row;align-items:center;justify-content:space-between;gap:40px}}
.cta-band::after{
  content:"";position:absolute;right:-130px;top:-140px;width:400px;height:400px;border-radius:50%;
  border:1px solid rgba(255,255,255,.16);
  background:radial-gradient(circle,rgba(255,255,255,.10),transparent 66%);
}
.cta-band .cta-text{position:relative;z-index:1;max-width:640px}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;letter-spacing:-.01em;margin-bottom:10px;color:#fff}
.cta-band p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.84)}
.cta-band .btn{position:relative;z-index:1;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.7);padding:56px 0 0;margin-top:0}
@media (min-width:1024px){.site-footer{padding:64px 0 0}}
.footer-grid{display:grid;gap:36px}
@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}}
.footer-brand .brand-text{color:#fff}
.footer-intro{font-size:14px;line-height:1.85;margin-top:16px;max-width:340px;color:rgba(255,255,255,.66)}
.footer-contact{display:flex;flex-direction:column;gap:10px;margin-top:20px;font-size:13px;color:rgba(255,255,255,.62)}
.footer-contact span{display:flex;align-items:center;gap:8px;line-height:1.6}
.footer-contact svg{width:16px;height:16px;stroke:var(--brand-400);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7);transition:color .18s ease}
.footer-col a:hover{color:var(--brand-400)}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 30px;display:flex;flex-direction:column;gap:12px;
  font-size:13px;color:rgba(255,255,255,.55);
}
@media (min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}
.fb-links{display:flex;flex-wrap:wrap;gap:18px}
.fb-links a{color:rgba(255,255,255,.62);transition:color .18s ease}
.fb-links a:hover{color:var(--brand-400)}