/* roulang page: index */
:root{
  --brand:#00C2A8;
  --brand-dark:#05897A;
  --action:#FF6B2C;
  --accent:#C8F53C;
  --ink:#0E1519;
  --ink-2:#16241F;
  --text:#16201F;
  --muted:#5C6B6B;
  --bg:#F6F7F4;
  --soft:#EAF1EE;
  --card:#FFFFFF;
  --line:#E2E7E3;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-1:0 1px 2px rgba(14,21,25,.06);
  --shadow-2:0 10px 28px rgba(14,21,25,.08);
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  padding-bottom:76px;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
time,.num{font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;}
  html{scroll-behavior:auto;}
}

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

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:#F6F7F4;
  border-bottom:1px solid transparent;
  transition:box-shadow .22s ease,border-color .22s ease,background .22s ease;
}
.site-header.scrolled{
  background:#FFFFFF;
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  height:68px;transition:height .22s ease;
}
.site-header.scrolled .header-inner{height:58px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-dark) 100%);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:16px;
  box-shadow:0 4px 12px rgba(0,194,168,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-name{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--ink);}
.logo-sub{font-size:11px;color:var(--muted);letter-spacing:.08em;}
.desktop-nav{display:none;align-items:center;gap:28px;}
.nav-link{
  position:relative;padding:6px 0;font-size:15px;font-weight:500;color:var(--text);
  transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:-2px;height:2px;
  background:var(--brand);transition:left .2s ease,right .2s ease;
}
.nav-link:hover{color:var(--brand-dark);}
.nav-link:hover::after{left:0;right:0;}
.nav-link.active{color:var(--brand-dark);font-weight:700;}
.nav-link.active::after{left:0;right:0;}
.nav-link.active::before{
  content:"";position:absolute;top:-5px;left:50%;transform:translateX(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--brand);
}
.header-cta{display:flex;align-items:center;gap:10px;}
@media (min-width:768px){
  .header-inner{height:76px;}
  .site-header.scrolled .header-inner{height:62px;}
}
@media (min-width:1024px){
  .desktop-nav{display:flex;}
}
@media (min-width:768px) and (max-width:1023px){
  .desktop-nav{display:flex;gap:18px;}
  .desktop-nav .nav-link{font-size:14px;}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;line-height:1;border:1.5px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:#0AD3B8;transform:translateY(-1px);box-shadow:0 10px 22px rgba(0,194,168,.30);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{border-color:var(--brand);color:var(--brand-dark);background:transparent;}
.btn-outline:hover{background:rgba(0,194,168,.08);transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--ink);}
.btn-light:hover{background:#F1F4F1;transform:translateY(-1px);}
.btn-accent{background:var(--accent);color:var(--ink);}
.btn-accent:hover{background:#D6FF4E;transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.55;filter:saturate(.6);cursor:not-allowed;transform:none;}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;background:var(--ink);padding-top:68px;}
.hero-media{position:absolute;inset:0;}
.hero-media img{width:100%;height:100%;object-fit:cover;opacity:.5;}
.hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(14,21,25,.94) 0%,rgba(14,21,25,.78) 42%,rgba(14,21,25,.20) 100%);
}
.hero-inner{position:relative;z-index:2;padding:52px 0 64px;max-width:760px;}
.badge-live{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;
  background:rgba(200,245,60,.16);border:1px solid rgba(200,245,60,.5);
  color:var(--accent);font-size:13px;font-weight:600;letter-spacing:.02em;
}
.dot-pulse{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(200,245,60,.2);}
.hero h1{
  margin-top:20px;color:#fff;font-size:28px;line-height:1.32;font-weight:800;letter-spacing:-.01em;
}
.hero-sub{margin-top:16px;color:rgba(255,255,255,.82);font-size:16px;line-height:1.85;max-width:600px;}
.hero-cta{margin-top:30px;display:flex;flex-wrap:wrap;gap:12px;}
.hero-stats{
  margin-top:38px;display:flex;flex-wrap:wrap;gap:14px;
}
.hero-stat{
  min-width:132px;padding:14px 18px;border-radius:14px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
}
.hero-stat dt{font-size:12px;color:rgba(255,255,255,.62);letter-spacing:.06em;}
.hero-stat dd{margin:4px 0 0;font-size:20px;font-weight:800;color:#fff;}
.hero-stat dd span{font-size:12px;font-weight:500;color:rgba(255,255,255,.6);margin-left:2px;}

.hero-float{
  position:relative;z-index:3;
  margin:0 16px -46px;padding:20px;border-radius:var(--radius-card);
  background:#fff;box-shadow:var(--shadow-2);border:1px solid var(--line);
}
.hero-float-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.hero-float-title{font-size:15px;font-weight:700;color:var(--ink);}
.hero-float-pct{font-size:22px;font-weight:800;color:var(--brand-dark);}
.bar{height:8px;border-radius:999px;background:var(--soft);overflow:hidden;margin-top:12px;}
.bar-fill{height:100%;width:62%;border-radius:999px;background:linear-gradient(90deg,var(--brand) 0%,var(--accent) 100%);}
.hero-float-foot{margin-top:10px;font-size:13px;color:var(--muted);}
@media (min-width:768px){
  .hero{padding-top:76px;}
  .hero-inner{padding:78px 0 88px;}
  .hero h1{font-size:38px;line-height:1.26;}
  .hero-float{margin:-58px auto 0;max-width:1200px;padding:24px 28px;display:flex;align-items:center;gap:32px;}
  .hero-float > .hero-float-body{flex:1;}
  .hero-float .bar{margin-top:14px;}
}
@media (min-width:1280px){
  .hero h1{font-size:44px;}
}

/* ============ 板块 ============ */
.section{padding:56px 0;}
.section-dark{background:linear-gradient(150deg,var(--ink) 0%,var(--ink-2) 100%);}
.section-soft{background:var(--soft);}
.sec-head{max-width:680px;margin-bottom:28px;}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--brand-dark);text-transform:uppercase;
}
.sec-eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px;}
.sec-title{margin-top:12px;font-size:24px;font-weight:800;line-height:1.35;letter-spacing:-.01em;color:var(--ink);}
.sec-desc{margin-top:12px;font-size:16px;color:var(--muted);line-height:1.85;}
.section-dark .sec-title{color:#fff;}
.section-dark .sec-desc{color:rgba(255,255,255,.72);}
@media (min-width:768px){
  .section{padding:88px 0;}
  .sec-title{font-size:28px;}
  .sec-head{margin-bottom:36px;}
}
@media (min-width:1280px){
  .section{padding:104px 0;}
  .sec-title{font-size:30px;}
}

/* ============ Zigzag 玩法 ============ */
.zig{display:grid;grid-template-columns:1fr;gap:28px;align-items:center;padding:28px 0;border-bottom:1px solid var(--line);}
.zig:last-child{border-bottom:0;}
.zig-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-img);
  box-shadow:var(--shadow-1);
}
.zig-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  background:var(--soft);color:var(--brand-dark);
  font-size:16px;font-weight:800;
}
.zig h3{margin-top:14px;font-size:19px;font-weight:700;color:var(--ink);}
.zig p{margin-top:10px;font-size:16px;color:var(--muted);line-height:1.85;}
.zig-tags{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;font-size:13px;font-weight:500;
  padding:4px 12px;border-radius:999px;background:var(--soft);color:var(--brand-dark);
}
@media (min-width:900px){
  .zig{grid-template-columns:1fr 1fr;gap:56px;padding:36px 0;}
  .zig.reverse .zig-media{order:2;}
}

/* ============ 奖励横滑 ============ */
.reward-scroller{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 16px 20px;margin:0 -16px;
  -webkit-overflow-scrolling:touch;
}
.reward-scroller::-webkit-scrollbar{height:6px;}
.reward-scroller::-webkit-scrollbar-thumb{background:#CFD8D2;border-radius:999px;}
.reward-card{
  flex:0 0 262px;scroll-snap-align:start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.reward-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(0,194,168,.45);}
.reward-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.reward-body{padding:16px 18px 20px;}
.reward-name{font-size:17px;font-weight:700;color:var(--ink);}
.reward-cond{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.75;}
.reward-meta{margin-top:14px;display:flex;align-items:center;justify-content:space-between;gap:10px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.6;
}
.badge-base{background:var(--soft);color:var(--brand-dark);}
.badge-common{background:#EEF1EC;color:#5C6B6B;}
.badge-adv{background:rgba(255,107,44,.12);color:#C24A16;}
.badge-limit{background:rgba(200,245,60,.30);color:#4C6410;}
.badge-high{background:var(--ink);color:#fff;}
.reward-num{font-size:13px;color:var(--muted);}
@media (min-width:768px){
  .reward-scroller{padding:4px 0 22px;margin:0;}
  .reward-card{flex:0 0 288px;}
}

/* ============ 步骤条 ============ */
.steps{display:grid;gap:16px;grid-template-columns:1fr;}
.step{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:20px 22px;box-shadow:var(--shadow-1);
}
.step-idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:10px;background:var(--brand);color:#fff;
  font-size:14px;font-weight:800;
}
.step h3{margin-top:12px;font-size:17px;font-weight:700;color:var(--ink);}
.step p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.8;}
.progress-wrap{
  margin-top:26px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1);
}
.progress-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;}
.progress-head strong{font-size:15px;color:var(--ink);}
.progress-head span{font-size:22px;font-weight:800;color:var(--brand-dark);}
.progress-note{margin-top:10px;font-size:13px;color:var(--muted);}
@media (min-width:768px){
  .steps{grid-template-columns:repeat(4,1fr);gap:20px;}
  .step{padding:24px;}
  .step:not(:last-child)::after{
    content:"";position:absolute;top:34px;right:-14px;width:8px;height:8px;
    border-top:2px solid var(--line);border-right:2px solid var(--line);
    transform:rotate(45deg);
  }
}

/* ============ CTA 带 ============ */
.cta-band{
  background:linear-gradient(140deg,var(--ink) 0%,var(--ink-2) 100%);
  border-radius:0;padding:52px 0;
}
.cta-inner{
  display:flex;flex-direction:column;gap:24px;align-items:flex-start;
}
.cta-band h2{color:#fff;font-size:24px;font-weight:800;line-height:1.35;}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.74);font-size:16px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-points{margin-top:8px;display:flex;flex-wrap:wrap;gap:20px;}
.cta-point{display:flex;align-items:center;gap:8px;color:rgba(255,255,255,.8);font-size:14px;}
.cta-point i{color:var(--accent);}
@media (min-width:900px){
  .cta-band{padding:64px 0;border-radius:0;}
  .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;}
  .cta-band h2{font-size:28px;}
  .cta-text{flex:1;}
}

/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:1fr;gap:20px;}
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(0,194,168,.45);}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.news-body h3{
  margin-top:12px;font-size:17px;font-weight:700;color:var(--ink);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  margin-top:10px;font-size:14px;color:var(--muted);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  gap:12px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);
}
.news-foot .go{color:var(--brand-dark);font-weight:600;}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);
  background:var(--card);padding:48px 24px;text-align:center;
}
.empty-state i{font-size:30px;color:#B9C6BF;}
.empty-state p{margin-top:14px;color:var(--muted);font-size:15px;}
.empty-state .btn{margin-top:20px;}
@media (min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);}}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:880px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .2s ease,background .2s ease;
}
.faq-item[open]{background:#F2F9F6;border-color:rgba(0,194,168,.4);border-left:3px solid var(--brand);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;
  background:var(--soft);color:var(--brand-dark);
  display:flex;align-items:center;justify-content:center;font-size:13px;
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--brand);color:#fff;}
.faq-body{padding:0 22px 20px;font-size:15px;color:var(--muted);line-height:1.85;}

/* ============ 页脚 ============ */
.site-footer{
  background:linear-gradient(160deg,var(--ink) 0%,var(--ink-2) 100%);
  color:rgba(255,255,255,.72);padding:56px 0 24px;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
.footer-brand .logo-name{color:#fff;}
.footer-brand .logo-sub{color:rgba(255,255,255,.5);}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:360px;}
.footer-col h3{font-size:15px;font-weight:700;color:#fff;letter-spacing:.02em;}
.footer-col ul{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);transition:color .18s ease;}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-direction:column;gap:10px;font-size:13px;color:rgba(255,255,255,.5);
}
@media (min-width:768px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
  .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}
}

/* ============ 移动底部 Tab ============ */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -4px 16px rgba(14,21,25,.06);
}
.tab-item{
  flex:1;height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--muted);position:relative;transition:color .18s ease;
}
.tab-item i{font-size:16px;}
.tab-item.active{color:var(--brand-dark);font-weight:700;}
.tab-item.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:28px;height:2px;border-radius:2px;background:var(--brand);
}
@media (min-width:768px){
  .mobile-tab{display:none;}
  body{padding-bottom:0;}
}

/* roulang page: article */
:root{
  --primary:#00C2A8;
  --primary-dark:#05897A;
  --action:#FF6B2C;
  --accent:#C8F53C;
  --ink:#0E1519;
  --ink-soft:#16241F;
  --text:#16201F;
  --text-sub:#5C6B6B;
  --bg:#F6F7F4;
  --bg-soft:#EAF1EE;
  --card:#FFFFFF;
  --border:#E2E7E3;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-1:0 1px 2px rgba(14,21,25,.06);
  --shadow-2:0 10px 28px rgba(14,21,25,.08);
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  padding-bottom:calc(56px + env(safe-area-inset-bottom));
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.3;color:var(--text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:16px;
  padding-right:16px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;border:1.5px solid transparent;
  transition:all .2s ease;white-space:nowrap;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(0,194,168,.25);}
.btn-primary:hover{background:#0FD2B7;transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,194,168,.35);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{border-color:var(--primary);color:var(--primary-dark);background:transparent;}
.btn-outline:hover{background:rgba(0,194,168,.08);transform:translateY(-1px);}
.btn-accent{background:var(--accent);color:#12261A;}
.btn-accent:hover{background:#D6FF55;transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--border);color:var(--text-sub);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary-dark);background:rgba(0,194,168,.06);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,247,244,.92);
  border-bottom:1px solid transparent;
  transition:background .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{
  background:#FB FCFA;
  background:#FBFCFA;
  border-bottom-color:var(--border);
  box-shadow:var(--shadow-1);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  height:72px;transition:height .2s ease;
}
.site-header.is-scrolled .header-inner{height:64px;}
.logo{display:flex;align-items:center;gap:10px;}
.logo-mark{
  width:36px;height:36px;border-radius:11px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;font-size:16px;box-shadow:0 6px 14px rgba(0,194,168,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-name{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--ink);}
.logo-sub{font-size:11px;color:var(--text-sub);letter-spacing:.08em;}
.desktop-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;padding:8px 14px;border-radius:9px;
  font-size:15px;font-weight:600;color:var(--text-sub);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;height:2px;width:0;
  background:var(--primary);border-radius:2px;transform:translateX(-50%);
  transition:width .22s ease;
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{width:22px;}
.nav-link.active{color:var(--primary-dark);font-weight:800;}
.nav-link.active::after{width:22px;}
.header-cta{display:flex;align-items:center;gap:10px;}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;align-items:stretch;justify-content:space-around;
  height:calc(56px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(255,255,255,.97);
  border-top:1px solid var(--border);
  box-shadow:0 -6px 20px rgba(14,21,25,.06);
}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;font-weight:600;color:var(--text-sub);position:relative;
}
.tab-item i{font-size:17px;}
.tab-item.active{color:var(--primary-dark);font-weight:800;}
.tab-item.active::before{
  content:"";position:absolute;top:0;width:26px;height:2px;border-radius:0 0 3px 3px;background:var(--primary);
}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;
  padding:44px 0 52px;
  background-image:linear-gradient(115deg,rgba(14,21,25,.94) 0%,rgba(14,21,25,.84) 46%,rgba(22,36,31,.68) 100%),url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  color:#fff;overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;right:-60px;bottom:-80px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(0,194,168,.30),transparent 68%);
}
.article-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:rgba(255,255,255,.66);margin-bottom:18px;
}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:rgba(255,255,255,.92);font-weight:600;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:12px;font-weight:700;line-height:1.6;
}
.badge-primary{background:rgba(0,194,168,.16);color:#7CEEE0;border:1px solid rgba(0,194,168,.4);}
.badge-soft{background:var(--bg-soft);color:var(--primary-dark);}
.badge-accent{background:rgba(200,245,60,.18);color:#C8F53C;border:1px solid rgba(200,245,60,.35);}
.article-title{
  margin:16px 0 20px;
  font-size:32px;line-height:1.32;color:#fff;font-weight:800;
  max-width:900px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  font-size:13.5px;color:rgba(255,255,255,.72);
  font-variant-numeric:tabular-nums;
}
.article-meta i{color:var(--primary);margin-right:4px;}
.article-meta .dot{opacity:.45;}

/* ---------- 正文区 ---------- */
.main-wrap{padding:44px 0 64px;}
.article-grid{
  display:grid;grid-template-columns:minmax(0,1fr);gap:32px;
}
.article-panel{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);
  padding:32px 22px;
}
.article-body{
  max-width:780px;margin:0 auto;
  font-size:16.5px;line-height:1.85;color:var(--text);
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.1em;}
.article-body h2{
  position:relative;font-size:24px;font-weight:800;line-height:1.4;
  padding-left:14px;margin:40px 0 16px;border-left:4px solid var(--primary);
}
.article-body h3{font-size:19px;font-weight:700;margin:28px 0 12px;}
.article-body h4{font-size:17px;font-weight:700;margin:22px 0 10px;}
.article-body a{color:var(--primary-dark);border-bottom:1px solid rgba(5,137,122,.35);}
.article-body a:hover{color:var(--action);border-bottom-color:var(--action);}
.article-body strong{font-weight:700;color:var(--ink);}
.article-body blockquote{
  margin:22px 0;padding:16px 20px;
  background:var(--bg-soft);border-left:4px solid var(--primary);
  border-radius:0 12px 12px 0;color:var(--text-sub);font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:1.4em;}
.article-body ul li{list-style:disc;margin-bottom:.5em;}
.article-body ol li{list-style:decimal;margin-bottom:.5em;}
.article-body img{
  border-radius:var(--radius-img);margin:20px auto;height:auto;
  box-shadow:var(--shadow-1);
}
.article-body figure{margin:22px 0;}
.article-body figcaption{
  text-align:center;font-size:13px;color:var(--text-sub);margin-top:8px;
}
.article-body table{
  width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;
  border:1px solid var(--border);border-radius:12px;overflow:hidden;
}
.article-body th,.article-body td{
  border:1px solid var(--border);padding:10px 14px;text-align:left;
  font-variant-numeric:tabular-nums;
}
.article-body thead th{background:var(--bg-soft);font-weight:700;color:var(--ink);}
.article-body tbody tr:nth-child(even){background:#F4F7F5;}
.article-body hr{border:none;border-top:1px solid var(--border);margin:32px 0;}

.empty-box{
  max-width:640px;margin:0 auto;text-align:center;padding:56px 20px;
}
.empty-box .empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:18px;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-soft);color:var(--primary-dark);font-size:26px;
}
.empty-box h2{font-size:22px;margin-bottom:10px;}
.empty-box p{color:var(--text-sub);font-size:15px;margin-bottom:22px;}

/* ---------- 尾部区 ---------- */
.article-tail{max-width:780px;margin:36px auto 0;}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.tag-list .label{font-size:13px;color:var(--text-sub);font-weight:600;}
.tag{
  display:inline-flex;align-items:center;padding:5px 14px;border-radius:999px;
  background:var(--bg-soft);color:var(--primary-dark);font-size:13px;font-weight:600;
  border:1px solid transparent;
}
.tag:hover{background:rgba(0,194,168,.14);border-color:rgba(0,194,168,.4);transform:translateY(-1px);}

.post-nav{
  display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:28px;
}
.post-nav a{
  display:flex;flex-direction:column;gap:6px;
  padding:16px 18px;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);
}
.post-nav a:hover{border-color:rgba(0,194,168,.45);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.post-nav .k{font-size:12px;color:var(--text-sub);font-weight:600;letter-spacing:.04em;}
.post-nav .v{font-size:15px;font-weight:700;color:var(--ink);}
.post-nav a.next{align-items:flex-end;text-align:right;}

.section-head{margin-bottom:26px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:800;letter-spacing:.12em;color:var(--primary-dark);
  text-transform:uppercase;margin-bottom:10px;
}
.section-head .eyebrow::before{content:"";width:22px;height:2px;background:var(--primary);border-radius:2px;}
.section-title{font-size:26px;font-weight:800;}
.section-desc{margin-top:10px;color:var(--text-sub);font-size:15px;}

.related-section{padding:8px 0 0;}
.card-grid{display:grid;grid-template-columns:1fr;gap:20px;}
.rc-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);
  transition:all .2s ease;
}
.rc-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(0,194,168,.45);}
.rc-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-soft);}
.rc-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.rc-card:hover .rc-thumb img{transform:scale(1.04);}
.rc-thumb .chip{
  position:absolute;left:12px;top:12px;
  padding:4px 11px;border-radius:999px;font-size:12px;font-weight:700;
  background:rgba(14,21,25,.78);color:var(--accent);
}
.rc-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rc-body h3{font-size:17px;font-weight:700;line-height:1.5;}
.rc-body p{font-size:14px;color:var(--text-sub);line-height:1.7;flex:1;}
.rc-foot{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-sub);font-variant-numeric:tabular-nums;}
.rc-foot .more{color:var(--primary-dark);font-weight:700;}

.back-row{display:flex;justify-content:center;margin-top:36px;}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,#0E1519 0%,#16241F 100%);
  color:#fff;padding:56px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(115deg,rgba(255,107,44,.14),transparent 55%);
}
.cta-inner{
  position:relative;z-index:2;
  display:flex;flex-direction:column;gap:22px;align-items:flex-start;
}
.cta-inner h2{color:#fff;font-size:26px;}
.cta-inner p{color:rgba(255,255,255,.74);font-size:15.5px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:linear-gradient(180deg,#0E1519 0%,#16241F 100%);
  color:rgba(255,255,255,.72);padding:56px 0 24px;
}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:32px;
  padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand .logo-name{color:#fff;}
.footer-brand .logo-sub{color:rgba(255,255,255,.55);}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px;}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  padding-top:20px;font-size:13px;color:rgba(255,255,255,.5);
  font-variant-numeric:tabular-nums;
}

/* ---------- 响应式 ---------- */
@media (min-width:640px){
  .container{padding-left:20px;padding-right:20px;}
  .article-panel{padding:40px 36px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .cta-inner h2{font-size:28px;}
}
@media (min-width:768px){
  body{padding-bottom:0;}
  .mobile-tabbar{display:none;}
  .article-title{font-size:38px;}
  .article-hero{padding:52px 0 62px;}
  .main-wrap{padding:56px 0 80px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;}
  .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;}
  .cta-inner .cta-text{max-width:640px;}
}
@media (min-width:1024px){
  .container{padding-left:24px;padding-right:24px;}
  .article-title{font-size:42px;}
  .card-grid{grid-template-columns:repeat(3,1fr);}
  .section-title{font-size:28px;}
  .cta-band{padding:72px 0;}
}
@media (max-width:767px){
  .desktop-nav{display:none;}
  .header-cta .btn span.cta-label{display:none;}
}
@media (max-width:400px){
  .logo-sub{display:none;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav a.next{align-items:flex-start;text-align:left;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --brand:#00C2A8;
  --brand-dark:#05897A;
  --action:#FF6B2C;
  --accent:#C8F53C;
  --ink:#0E1519;
  --ink-2:#16241F;
  --text:#16201F;
  --muted:#5C6B6B;
  --bg:#F6F7F4;
  --bg-soft:#EAF1EE;
  --card:#FFFFFF;
  --line:#E2E7E3;
  --r-card:16px;
  --r-btn:12px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(14,21,25,.06);
  --sh-2:0 10px 28px rgba(14,21,25,.08);
  --header-h:72px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

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

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,247,244,.94);
  border-bottom:1px solid transparent;
  transition:background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:var(--sh-1);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:var(--header-h);transition:height .2s var(--ease);}
.site-header.is-scrolled .header-inner{height:62px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#fff;font-size:15px;box-shadow:0 4px 12px rgba(0,194,168,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-name{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--ink);}
.logo-sub{font-size:11px;color:var(--muted);letter-spacing:.04em;}
.desktop-nav{display:none;align-items:center;gap:4px;}
.nav-link{
  position:relative;padding:8px 14px;font-size:15px;font-weight:500;color:var(--muted);
  border-radius:8px;transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:center;transition:transform .2s var(--ease);border-radius:2px;
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand-dark);font-weight:700;}
.nav-link.active::before{
  content:"";position:absolute;left:50%;top:1px;transform:translateX(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--brand);
}
.header-cta{display:none;}
@media (min-width:768px){
  .desktop-nav{display:flex;}
  .header-cta{display:block;}
}
@media (min-width:768px) and (max-width:1024px){
  .nav-link{padding:8px 9px;font-size:14px;}
  .logo-sub{display:none;}
}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);border:1.5px solid transparent;
  font-weight:600;letter-spacing:.01em;cursor:pointer;white-space:nowrap;
  transition:transform .18s var(--ease),background-color .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 12px rgba(0,194,168,.24);}
.btn-primary:hover{background:#0ad2bb;transform:translateY(-1px);box-shadow:0 12px 26px rgba(0,194,168,.30);}
.btn-outline{border-color:var(--brand);color:var(--brand-dark);background:transparent;}
.btn-outline:hover{background:rgba(0,194,168,.09);transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--ink);box-shadow:var(--sh-1);}
.btn-light:hover{transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent{background:var(--accent);color:var(--ink);}
.btn-accent:hover{transform:translateY(-1px);box-shadow:0 12px 26px rgba(200,245,60,.35);}
.btn-ghost-light{border-color:rgba(255,255,255,.42);color:#fff;background:transparent;}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);transform:translateY(-1px);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-lg{padding:14px 26px;font-size:16px;}
.btn:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* ============ Hero ============ */
.page-hero{
  position:relative;color:#fff;
  background-image:linear-gradient(102deg,rgba(14,21,25,.9) 0%,rgba(14,21,25,.62) 52%,rgba(14,21,25,.18) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  min-height:320px;display:flex;align-items:center;
  padding:56px 0 48px;
}
@media (min-width:1024px){.page-hero{min-height:360px;padding:72px 0 60px;}}
.hero-inner{max-width:720px;}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:18px;}
.breadcrumb a{color:rgba(255,255,255,.86);transition:color .18s var(--ease);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb i{font-size:9px;opacity:.7;}
.hero-badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(200,245,60,.16);border:1px solid rgba(200,245,60,.42);color:var(--accent);
  margin-bottom:18px;
}
.hero-title{font-size:28px;font-weight:800;line-height:1.28;letter-spacing:-.01em;margin-bottom:14px;}
.hero-lead{font-size:16px;line-height:1.8;color:rgba(255,255,255,.86);max-width:620px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-chip{
  display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border-radius:999px;
  font-size:13px;color:rgba(255,255,255,.88);background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);
}
@media (min-width:768px){.hero-title{font-size:36px;}}
@media (min-width:1024px){.hero-title{font-size:42px;}.hero-lead{font-size:17px;}}

/* ============ Anchor nav ============ */
.anchor-nav{
  position:sticky;top:var(--header-h);z-index:50;background:#fff;
  border-bottom:1px solid var(--line);box-shadow:var(--sh-1);
}
.anchor-inner{display:flex;gap:6px;overflow-x:auto;padding-top:10px;padding-bottom:10px;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner a{
  white-space:nowrap;font-size:14px;font-weight:500;color:var(--muted);
  padding:7px 14px;border-radius:999px;border:1px solid transparent;
  transition:all .18s var(--ease);
}
.anchor-inner a:hover{background:var(--bg-soft);color:var(--brand-dark);border-color:rgba(0,194,168,.24);}

/* ============ Sections ============ */
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:88px 0;}}
.section-soft{background:var(--bg-soft);}
.section-dark{background:linear-gradient(160deg,#0E1519,#16241F);color:#fff;}
.section-head{max-width:760px;margin-bottom:28px;}
@media (min-width:1024px){.section-head{margin-bottom:36px;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand-dark);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px;display:inline-block;}
.section-dark .eyebrow{color:var(--accent);}
.section-dark .eyebrow::before{background:var(--accent);}
.section-title{font-size:24px;font-weight:800;letter-spacing:-.01em;line-height:1.35;color:var(--ink);}
.section-dark .section-title{color:#fff;}
@media (min-width:1024px){.section-title{font-size:30px;}}
.section-desc{margin-top:14px;font-size:16px;color:var(--muted);line-height:1.85;}
.section-dark .section-desc{color:rgba(255,255,255,.76);}

/* ============ Cards ============ */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  display:flex;flex-direction:column;height:100%;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,194,168,.34);}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-soft);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
.card:hover .card-media img{transform:scale(1.04);}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{font-size:18px;font-weight:700;color:var(--ink);line-height:1.45;}
.card-text{font-size:15px;color:var(--muted);line-height:1.8;}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:6px;}
.card-link{font-size:14px;font-weight:600;color:var(--brand-dark);display:inline-flex;align-items:center;gap:6px;transition:gap .18s var(--ease);}
.card:hover .card-link{gap:10px;}

.grid-cards{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:640px){.grid-cards{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.grid-cards{grid-template-columns:repeat(3,1fr);gap:24px;}}

/* ============ Badges / tags ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(0,194,168,.10);color:var(--brand-dark);border:1px solid rgba(0,194,168,.26);
}
.tag-orange{background:rgba(255,107,44,.10);color:#C24A17;border-color:rgba(255,107,44,.28);}
.tag-lime{background:rgba(200,245,60,.24);color:#4E6B00;border-color:rgba(160,200,20,.4);}
.tag-line{background:transparent;color:var(--muted);border-color:var(--line);}
.index-num{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:38px;height:26px;padding:0 8px;border-radius:8px;
  font-size:13px;font-weight:800;letter-spacing:.04em;
  background:var(--ink);color:var(--accent);
}

/* ============ Split (zigzag) ============ */
.split{display:grid;grid-template-columns:1fr;gap:24px;align-items:center;}
@media (min-width:1024px){.split{grid-template-columns:1.05fr .95fr;gap:48px;}.split.reverse .split-media{order:-1;}}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-2);}
.split h3{font-size:20px;font-weight:700;color:var(--ink);margin-bottom:12px;line-height:1.45;}
.split p{font-size:16px;color:var(--muted);line-height:1.85;}
.split + .split{margin-top:56px;}
@media (min-width:1024px){.split + .split{margin-top:80px;}}

/* ============ Steps list ============ */
.check-list{display:grid;grid-template-columns:1fr;gap:16px;}
@media (min-width:768px){.check-list{grid-template-columns:repeat(3,1fr);gap:20px;}}
.check-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;
  box-shadow:var(--sh-1);transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.check-item:hover{transform:translateY(-2px);border-color:rgba(0,194,168,.34);box-shadow:var(--sh-2);}
.check-item h4{font-size:17px;font-weight:700;color:var(--ink);margin:12px 0 8px;display:flex;align-items:center;gap:10px;}
.check-item p{font-size:15px;color:var(--muted);line-height:1.8;}

/* ============ Notice cards ============ */
.notice-grid{display:grid;grid-template-columns:1fr;gap:16px;}
@media (min-width:768px){.notice-grid{grid-template-columns:repeat(3,1fr);gap:20px;}}
.notice{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--action);
  border-radius:14px;padding:20px;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.notice:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.notice h4{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:8px;display:flex;gap:8px;align-items:center;}
.notice h4 i{color:var(--action);font-size:14px;}
.notice p{font-size:15px;color:var(--muted);line-height:1.8;}

/* ============ FAQ ============ */
.faq-list{max-width:880px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item + .faq-item{margin-top:12px;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-ico{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;
  background:var(--bg-soft);color:var(--brand-dark);font-size:12px;transition:transform .22s var(--ease),background .2s var(--ease);
}
.faq-item[open]{background:rgba(0,194,168,.055);border-color:rgba(0,194,168,.32);box-shadow:inset 4px 0 0 var(--brand);}
.faq-item[open] .faq-ico{background:var(--brand);color:#fff;transform:rotate(135deg);}
.faq-body{padding:0 20px 20px;font-size:15px;color:var(--muted);line-height:1.85;}

/* ============ CTA band ============ */
.cta-band{
  background:linear-gradient(120deg,#0E1519 0%,#16241F 62%,#0b3a34 100%);
  color:#fff;padding:56px 0;
}
@media (min-width:1024px){.cta-band{padding:80px 0;}}
.cta-inner{display:grid;grid-template-columns:1fr;gap:26px;align-items:center;}
@media (min-width:1024px){.cta-inner{grid-template-columns:1.35fr .65fr;gap:48px;}}
.cta-band h2{font-size:24px;font-weight:800;letter-spacing:-.01em;line-height:1.35;}
@media (min-width:1024px){.cta-band h2{font-size:30px;}}
.cta-band p{margin-top:14px;font-size:16px;color:rgba(255,255,255,.76);line-height:1.85;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ Related ============ */
.rel-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:768px){.rel-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}

/* ============ Footer ============ */
.site-footer{background:linear-gradient(180deg,#0E1519,#121d1a);color:rgba(255,255,255,.72);padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding-bottom:36px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px;}}
.footer-brand .logo-name{color:#fff;}
.footer-brand .logo-sub{color:rgba(255,255,255,.5);}
.footer-brand p{margin-top:16px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px;}
.footer-col h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.64);transition:color .18s var(--ease),padding-left .18s var(--ease);}
.footer-col a:hover{color:var(--brand);padding-left:4px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.48);
}

/* ============ Mobile tabbar ============ */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:flex;
  background:#fff;border-top:1px solid var(--line);box-shadow:0 -4px 18px rgba(14,21,25,.06);
  padding-bottom:env(safe-area-inset-bottom,0);
}
.tab-item{
  position:relative;flex:1;height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;font-size:11px;color:var(--muted);transition:color .18s var(--ease),background .18s var(--ease);
}
.tab-item i{font-size:16px;}
.tab-item.active{color:var(--brand-dark);font-weight:700;}
.tab-item.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;background:var(--brand);border-radius:0 0 2px 2px;
}
.tab-item:active{background:var(--bg-soft);}
@media (min-width:768px){.mobile-tabbar{display:none;}}
@media (max-width:767.98px){body{padding-bottom:64px;}}

/* ============ Misc ============ */
.anchor-target{scroll-margin-top:132px;}
.soft-panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:24px;}
@media (min-width:1024px){.soft-panel{padding:32px;}}
.divider{height:1px;background:var(--line);border:0;margin:0;}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --main:#00C2A8;
  --main-dark:#05897A;
  --main-soft:rgba(0,194,168,.08);
  --action:#FF6B2C;
  --accent:#C8F53C;
  --ink:#0E1519;
  --ink-2:#16241F;
  --text:#16201F;
  --muted:#5C6B6B;
  --bg:#F6F7F4;
  --soft:#EAF1EE;
  --card:#FFFFFF;
  --line:#E2E7E3;
  --r-card:16px;
  --r-btn:12px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(14,21,25,.06);
  --sh-2:0 10px 28px rgba(14,21,25,.08);
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--main);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:16px;
  padding-right:16px;
}
@media (min-width:768px){
  .container{padding-left:24px;padding-right:24px;}
}

.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(246,247,244,.92);
  border-bottom:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.site-header.scrolled{
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  height:70px;
  transition:height .2s ease;
}
.site-header.scrolled .header-inner{height:62px;}

.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;flex:0 0 36px;
  display:flex;align-items:center;justify-content:center;
  border-radius:11px;
  background:linear-gradient(135deg,var(--main),var(--main-dark));
  color:#fff;font-size:16px;
  box-shadow:0 6px 16px rgba(5,137,122,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-name{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--ink);}
.logo-sub{font-size:11px;color:var(--muted);letter-spacing:.04em;}

.desktop-nav{display:none;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  padding:8px 14px;
  font-size:15px;
  font-weight:500;
  color:var(--muted);
  border-radius:10px;
  transition:color .18s ease,background .18s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  background:var(--main);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .2s ease;
  border-radius:2px;
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--main-dark);font-weight:700;}
.nav-link.active::after{transform:scaleX(1);}

.header-cta{display:flex;align-items:center;gap:10px;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:1.5px solid transparent;
  border-radius:var(--r-btn);
  font-weight:600;
  letter-spacing:.01em;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-lg{height:52px;padding:0 26px;font-size:16px;}
.btn-primary{background:var(--main);color:#fff;box-shadow:0 6px 16px rgba(0,194,168,.24);}
.btn-primary:hover{background:#0AD0B5;transform:translateY(-1px);box-shadow:0 10px 22px rgba(0,194,168,.3);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--main-dark);border-color:var(--main);}
.btn-ghost:hover{background:var(--main-soft);transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--ink);}
.btn-light:hover{background:#F1F6F4;transform:translateY(-1px);}
.btn-accent{background:var(--accent);color:var(--ink);}
.btn-accent:hover{background:#D6FA55;transform:translateY(-1px);}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.55;filter:saturate(.6);cursor:not-allowed;transform:none;}

/* ============ Hero ============ */
.cat-hero{
  position:relative;
  min-height:300px;
  display:flex;
  align-items:center;
  overflow:hidden;
  background:linear-gradient(115deg,#0E1519 0%,#16241F 62%,#0E1519 100%);
}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.42;
}
.cat-hero-bg::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(14,21,25,.92) 0%,rgba(14,21,25,.62) 48%,rgba(22,36,31,.28) 100%);
}
.cat-hero .container{position:relative;z-index:2;padding-top:44px;padding-bottom:44px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.66);
  margin-bottom:16px;
}
.breadcrumb a{color:rgba(255,255,255,.82);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:rgba(255,255,255,.34);}
.cat-hero h1{
  font-size:28px;
  line-height:1.28;
  font-weight:800;
  letter-spacing:-.01em;
  color:#fff;
  max-width:760px;
}
.cat-hero .hero-lead{
  margin-top:14px;
  font-size:15px;
  line-height:1.75;
  color:rgba(255,255,255,.78);
  max-width:640px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:6px;
  height:30px;padding:0 12px;
  border-radius:999px;
  border:1px solid rgba(200,245,60,.38);
  background:rgba(200,245,60,.1);
  color:var(--accent);
  font-size:12.5px;font-weight:600;
}

@media (min-width:768px){
  .cat-hero{min-height:340px;}
  .cat-hero h1{font-size:38px;}
  .cat-hero .hero-lead{font-size:17px;}
}

/* ============ 锚点导航 ============ */
.anchor-nav{
  position:sticky;
  top:70px;
  z-index:40;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--line);
  transition:top .2s ease;
}
.site-header.scrolled ~ .anchor-nav{top:62px;}
.anchor-inner{
  display:flex;
  gap:6px;
  overflow-x:auto;
  scrollbar-width:none;
  padding:10px 0;
}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-link{
  flex:0 0 auto;
  height:36px;
  padding:0 14px;
  display:inline-flex;align-items:center;
  border-radius:999px;
  font-size:14px;font-weight:600;
  color:var(--muted);
  border:1px solid var(--line);
  background:#fff;
  transition:all .18s ease;
}
.anchor-link:hover{color:var(--main-dark);border-color:rgba(0,194,168,.45);background:var(--main-soft);}
.anchor-link.active{color:#fff;background:var(--main-dark);border-color:var(--main-dark);}

/* ============ 板块通用 ============ */
.section{padding-top:56px;padding-bottom:56px;}
@media (min-width:1024px){
  .section{padding-top:88px;padding-bottom:88px;}
}
.section-soft{background:var(--soft);}
.section-head{max-width:760px;margin-bottom:28px;}
@media (min-width:768px){.section-head{margin-bottom:32px;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--main-dark);text-transform:uppercase;
  margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--main);border-radius:2px;}
.section-title{
  font-size:24px;line-height:1.32;font-weight:800;letter-spacing:-.01em;color:var(--ink);
}
@media (min-width:768px){.section-title{font-size:29px;}}
.section-desc{margin-top:12px;font-size:15.5px;color:var(--muted);line-height:1.8;}

/* ============ 奖励卡片 ============ */
.reward-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}
@media (min-width:640px){.reward-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.reward-grid{grid-template-columns:repeat(4,1fr);gap:24px;}}

.reward-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.reward-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-2);
  border-color:rgba(0,194,168,.4);
}
.reward-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--soft);}
.reward-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.reward-card:hover .reward-media img{transform:scale(1.04);}
.reward-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.reward-title{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.reward-cond{font-size:14px;color:var(--muted);line-height:1.75;flex:1;}
.badge{
  display:inline-flex;align-items:center;
  height:26px;padding:0 11px;
  border-radius:999px;
  font-size:12.5px;font-weight:700;
  letter-spacing:.02em;
}
.badge-normal{background:var(--main-soft);color:var(--main-dark);}
.badge-advance{background:rgba(255,107,44,.12);color:#C64C14;}
.badge-limited{background:rgba(200,245,60,.34);color:#4A5E06;}
.badge-cycle{background:#E7EDF2;color:#3E5563;}
.reward-meta{
  display:flex;align-items:center;justify-content:space-between;
  padding-top:12px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.reward-meta strong{color:var(--ink);font-weight:700;}

/* ============ 时间轴 ============ */
.timeline{position:relative;margin-top:8px;}
.tl-item{
  display:grid;
  grid-template-columns:1fr;
  gap:8px;
  padding:20px 0;
  border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
.tl-item:last-child{border-bottom:none;}
.tl-item:hover{background:var(--main-soft);}
.tl-time{
  display:flex;align-items:baseline;gap:10px;
  font-variant-numeric:tabular-nums;
}
.tl-day{
  font-size:15px;font-weight:800;color:var(--main-dark);
  letter-spacing:-.01em;
}
.tl-hour{
  font-size:13.5px;font-weight:600;color:var(--muted);
}
.tl-body h3{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.tl-body p{margin-top:8px;font-size:15px;color:var(--muted);line-height:1.8;}

@media (min-width:768px){
  .tl-item{
    grid-template-columns:168px 1fr;
    gap:28px;
    padding:24px 20px;
    border-bottom:1px solid var(--line);
    border-radius:12px;
  }
  .tl-time{flex-direction:column;gap:4px;padding-top:2px;}
  .tl-day{font-size:16px;}
  .tl-hour{font-size:13.5px;}
  .tl-body{position:relative;padding-left:22px;border-left:2px solid var(--line);}
  .tl-body::before{
    content:"";
    position:absolute;left:-7px;top:9px;
    width:12px;height:12px;border-radius:50%;
    background:#fff;border:3px solid var(--main);
  }
}

/* ============ 步骤卡 ============ */
.step-grid{
  display:grid;grid-template-columns:1fr;gap:18px;
}
@media (min-width:640px){.step-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.step-grid{grid-template-columns:repeat(4,1fr);gap:22px;}}
.step-card{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 20px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,194,168,.4);}
.step-num{
  font-size:26px;font-weight:800;letter-spacing:-.02em;
  color:var(--main);font-variant-numeric:tabular-nums;
  line-height:1;
  margin-bottom:12px;
}
.step-card h3{font-size:17.5px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.step-card p{margin-top:8px;font-size:14.5px;color:var(--muted);line-height:1.75;}

/* ============ 细则清单 ============ */
.spec-panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:8px 20px;
  box-shadow:var(--sh-1);
}
.spec-row{
  display:grid;
  grid-template-columns:1fr;
  gap:4px;
  padding:16px 0;
  border-bottom:1px solid var(--line);
}
.spec-row:last-child{border-bottom:none;}
.spec-key{font-size:14px;font-weight:700;color:var(--ink);}
.spec-val{font-size:14.5px;color:var(--muted);line-height:1.75;}
@media (min-width:768px){
  .spec-row{grid-template-columns:190px 1fr;gap:24px;align-items:start;}
  .spec-key{padding-top:1px;}
}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-left:3px solid transparent;
  border-radius:var(--r-card);
  overflow:hidden;
  transition:border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(0,194,168,.35);box-shadow:var(--sh-1);}
.faq-item[open]{
  background:var(--main-soft);
  border-left-color:var(--main);
  box-shadow:var(--sh-1);
}
.faq-item summary{
  cursor:pointer;
  list-style:none;
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:18px 20px;
  font-size:16px;font-weight:700;color:var(--ink);
  letter-spacing:-.01em;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  flex:0 0 24px;
  width:24px;height:24px;
  display:flex;align-items:center;justify-content:center;
  border-radius:8px;
  background:var(--soft);
  color:var(--main-dark);
  font-size:13px;
  transition:transform .2s ease,background .2s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--main);color:#fff;}
.faq-answer{
  padding:0 20px 20px;
  font-size:15px;color:var(--muted);line-height:1.85;
}

/* ============ 相关分类 ============ */
.rel-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:768px){.rel-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
.rel-card{
  display:flex;flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,194,168,.4);}
.rel-media{aspect-ratio:4/3;overflow:hidden;background:var(--soft);}
.rel-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.rel-card:hover .rel-media img{transform:scale(1.04);}
.rel-body{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1;}
.rel-body h3{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.rel-body p{font-size:14.5px;color:var(--muted);line-height:1.75;flex:1;}
.rel-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--main-dark);
}
.rel-card:hover .rel-more{gap:10px;}

/* ============ CTA 带 ============ */
.cta-band{
  background:linear-gradient(115deg,#0E1519 0%,#16241F 58%,#0E1519 100%);
  color:#fff;
}
.cta-inner{
  display:grid;grid-template-columns:1fr;gap:26px;
  padding-top:56px;padding-bottom:56px;
}
@media (min-width:1024px){
  .cta-inner{grid-template-columns:1.4fr 1fr;align-items:center;gap:48px;padding-top:72px;padding-bottom:72px;}
}
.cta-inner h2{font-size:24px;font-weight:800;letter-spacing:-.01em;line-height:1.34;}
@media (min-width:768px){.cta-inner h2{font-size:30px;}}
.cta-inner p{margin-top:14px;font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.76);max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-note{
  margin-top:20px;font-size:13.5px;color:rgba(255,255,255,.55);
  display:flex;align-items:center;gap:8px;
}

/* ============ 页脚 ============ */
.site-footer{
  background:linear-gradient(180deg,#0E1519 0%,#16241F 100%);
  color:rgba(255,255,255,.72);
  padding-top:52px;
  padding-bottom:calc(56px + env(safe-area-inset-bottom) + 24px);
}
@media (min-width:768px){
  .site-footer{padding-bottom:28px;}
}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:32px;
  padding-bottom:36px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}}
.site-footer .logo-name{color:#fff;}
.site-footer .logo-sub{color:rgba(255,255,255,.5);}
.site-footer .logo-mark{box-shadow:none;}
.footer-brand p{margin-top:16px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:360px;}
.footer-col h3{
  font-size:14px;font-weight:700;color:#fff;letter-spacing:.06em;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.68);transition:color .18s ease;}
.footer-col a:hover{color:var(--main);}
.footer-bottom{
  display:flex;flex-direction:column;gap:10px;
  padding-top:22px;
  font-size:13.5px;color:rgba(255,255,255,.46);
}
@media (min-width:768px){
  .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}
}

/* ============ 移动底部 Tab ============ */
.mobile-tab{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:70;
  display:flex;
  background:rgba(255,255,255,.97);
  border-top:1px solid var(--line);
  box-shadow:0 -6px 20px rgba(14,21,25,.08);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab a{
  flex:1;
  height:56px;
  display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  gap:3px;
  font-size:11px;
  font-weight:600;
  color:var(--muted);
  position:relative;
  transition:color .18s ease;
}
.mobile-tab a i{font-size:16px;}
.mobile-tab a::before{
  content:"";
  position:absolute;top:0;left:50%;
  transform:translateX(-50%) scaleX(0);
  width:26px;height:2px;
  background:var(--main);
  border-radius:0 0 2px 2px;
  transition:transform .2s ease;
}
.mobile-tab a.active{color:var(--main-dark);font-weight:700;}
.mobile-tab a.active::before{transform:translateX(-50%) scaleX(1);}
@media (min-width:768px){
  .mobile-tab{display:none;}
  body{padding-bottom:0;}
}

@media (min-width:768px){
  .desktop-nav{display:flex;gap:2px;}
}
@media (min-width:768px) and (max-width:1023px){
  .desktop-nav{gap:0;}
  .nav-link{padding:8px 9px;font-size:14px;}
  .nav-link::after{left:9px;right:9px;}
  .logo-sub{display:none;}
  .header-cta .btn-sm{padding:0 12px;font-size:13px;}
}
@media (min-width:1024px){
  .desktop-nav{gap:6px;}
}

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

/* roulang page: category3 */
:root{
  --brand:#00C2A8;
  --brand-dark:#05897A;
  --action:#FF6B2C;
  --accent:#C8F53C;
  --ink:#0E1519;
  --ink-2:#16241F;
  --text:#16201F;
  --muted:#5C6B6B;
  --bg:#F6F7F4;
  --bg-soft:#EAF1EE;
  --card:#FFFFFF;
  --line:#E2E7E3;
  --r-card:16px;
  --r-btn:12px;
  --r-img:14px;
  --shadow-1:0 1px 2px rgba(14,21,25,.06);
  --shadow-2:0 10px 28px rgba(14,21,25,.08);
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-0.01em;line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px;}
@media (min-width:1024px){.container{padding:0 24px;}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(14,21,25,.06);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:var(--header-h);transition:height .2s ease;}
.site-header.is-scrolled .header-inner{height:64px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;
  box-shadow:0 6px 14px rgba(0,194,168,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-name{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-.01em;}
.logo-sub{font-size:11px;color:var(--muted);letter-spacing:.06em;}
.desktop-nav{display:none;align-items:center;gap:2px;}
@media (min-width:768px){.desktop-nav{display:flex;}}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;font-size:15px;font-weight:600;color:var(--muted);
  transition:color .2s ease;
}
.nav-link::after{
  content:'';position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:center;transition:transform .2s ease;
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand-dark);font-weight:800;}
.nav-link.active::after{transform:scaleX(1);}
.header-cta{display:none;}
@media (min-width:768px){.header-cta{display:flex;align-items:center;gap:8px;}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);border:1.5px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(0,194,168,.26);}
.btn-primary:hover{background:#12D3B8;transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,194,168,.34);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--brand-dark);border-color:var(--brand);}
.btn-ghost:hover{background:rgba(0,194,168,.08);transform:translateY(-1px);}
.btn-action{background:var(--action);color:#fff;box-shadow:0 6px 16px rgba(255,107,44,.28);}
.btn-action:hover{background:#FF7E45;transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--ink);}
.btn-light:hover{background:var(--accent);color:var(--ink);transform:translateY(-1px);}
.btn:disabled{opacity:.55;cursor:not-allowed;filter:saturate(.6);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  font-size:12.5px;font-weight:700;letter-spacing:.02em;
}
.badge-brand{background:rgba(0,194,168,.12);color:var(--brand-dark);}
.badge-action{background:rgba(255,107,44,.12);color:#D9531B;}
.badge-accent{background:rgba(200,245,60,.32);color:#5A6B0E;}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--muted);}
.badge-on-dark{background:rgba(255,255,255,.14);color:#fff;}

/* ---------- 页首 Hero ---------- */
.page-hero{
  position:relative;color:#fff;overflow:hidden;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  min-height:340px;display:flex;align-items:center;
}
.page-hero::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(14,21,25,.95) 0%,rgba(14,21,25,.80) 46%,rgba(22,36,31,.44) 100%);
}
.page-hero .container{position:relative;z-index:2;padding-top:44px;padding-bottom:44px;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:18px;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{opacity:.5;}
.hero-title{font-size:28px;font-weight:800;max-width:820px;}
@media (min-width:768px){.hero-title{font-size:36px;}}
@media (min-width:1024px){.hero-title{font-size:40px;}}
.hero-title .hl{color:var(--accent);}
.hero-lead{margin-top:14px;max-width:720px;font-size:16px;color:rgba(255,255,255,.86);line-height:1.85;}
.hero-meta{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px;align-items:center;}

/* ---------- 锚点导航 ---------- */
.anchor-nav{
  position:sticky;top:64px;z-index:45;background:rgba(246,247,244,.96);
  border-bottom:1px solid var(--line);
}
.anchor-inner{display:flex;gap:6px;overflow-x:auto;padding:10px 0;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner a{
  flex:0 0 auto;padding:7px 14px;border-radius:999px;font-size:14px;font-weight:600;color:var(--muted);
  border:1px solid transparent;transition:all .18s ease;white-space:nowrap;
}
.anchor-inner a:hover{color:var(--brand-dark);background:#fff;border-color:var(--line);}
.anchor-inner a.active{background:var(--brand);color:#fff;border-color:var(--brand);}

/* ---------- 板块 ---------- */
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:92px 0;}}
.section-soft{background:var(--bg-soft);}
.section-head{max-width:760px;margin-bottom:28px;}
@media (min-width:1024px){.section-head{margin-bottom:36px;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:800;letter-spacing:.14em;
  color:var(--brand-dark);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:'';width:22px;height:2px;background:var(--brand);border-radius:2px;}
.section-title{font-size:24px;}
@media (min-width:1024px){.section-title{font-size:30px;}}
.section-desc{margin-top:14px;color:var(--muted);font-size:16px;}

/* ---------- 双列图文 ---------- */
.split{display:grid;gap:24px;align-items:center;}
@media (min-width:1024px){.split{grid-template-columns:1.05fr 1fr;gap:48px;}}
@media (min-width:1024px){.split.reverse .split-media{order:2;}}
.split-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  box-shadow:var(--shadow-2);
}
.split-body h3{font-size:19px;margin-bottom:12px;}
.split-body p{color:var(--muted);font-size:16px;}
.point-list{margin-top:18px;display:grid;gap:12px;}
.point-list li{display:grid;grid-template-columns:22px 1fr;gap:12px;align-items:start;font-size:15.5px;color:var(--text);}
.point-list li i{color:var(--brand);font-size:15px;margin-top:6px;}

/* ---------- 编号清单 ---------- */
.num-list{border-top:1px solid var(--line);}
.num-list>li{
  display:grid;grid-template-columns:46px 1fr;gap:16px;padding:22px 8px;border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
.num-list>li:hover{background:rgba(0,194,168,.05);}
.num-idx{
  font-variant-numeric:tabular-nums;font-weight:800;font-size:19px;color:var(--brand-dark);letter-spacing:.02em;
}
.num-body h3{font-size:17.5px;margin-bottom:8px;}
.num-body p{color:var(--muted);font-size:15.5px;}
.num-tail{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 卡片 ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(0,194,168,.3);}
.card h3{font-size:18px;margin-bottom:10px;}
.card p{color:var(--muted);font-size:15px;}
.grid-3{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:640px){.grid-3{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.grid-3{grid-template-columns:repeat(3,1fr);}}
.grid-2{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:768px){.grid-2{grid-template-columns:repeat(2,1fr);}}
.icon-badge{
  width:44px;height:44px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:rgba(0,194,168,.12);color:var(--brand-dark);font-size:18px;margin-bottom:16px;
}
.icon-badge.orange{background:rgba(255,107,44,.12);color:#D9531B;}
.icon-badge.lime{background:rgba(200,245,60,.3);color:#5A6B0E;}

/* ---------- 时间节点清单 ---------- */
.time-list{border-top:1px solid var(--line);}
.time-list li{
  display:grid;grid-template-columns:1fr;gap:6px;padding:18px 8px;border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
@media (min-width:640px){.time-list li{grid-template-columns:170px 1fr;gap:20px;align-items:baseline;}}
.time-list li:hover{background:rgba(0,194,168,.05);}
.time-val{
  font-variant-numeric:tabular-nums;font-weight:800;color:var(--ink);font-size:15.5px;letter-spacing:.01em;
}
.time-txt{color:var(--muted);font-size:15.5px;}
.time-txt strong{color:var(--text);font-weight:700;}

/* ---------- 数据块 ---------- */
.stat-row{display:grid;gap:16px;grid-template-columns:repeat(2,1fr);margin-top:26px;}
@media (min-width:1024px){.stat-row{grid-template-columns:repeat(4,1fr);}}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:18px 20px;box-shadow:var(--shadow-1);}
.stat-num{font-variant-numeric:tabular-nums;font-size:26px;font-weight:800;color:var(--brand-dark);line-height:1.2;}
.stat-label{font-size:13.5px;color:var(--muted);margin-top:6px;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16.5px;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .mark{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;background:var(--bg-soft);color:var(--brand-dark);
  display:flex;align-items:center;justify-content:center;font-size:13px;transition:transform .2s ease;
}
.faq-item[open]{border-color:rgba(0,194,168,.4);background:rgba(0,194,168,.05);}
.faq-item[open] summary .mark{transform:rotate(45deg);}
.faq-body{padding:0 22px 20px;color:var(--muted);font-size:15.5px;max-width:800px;}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:linear-gradient(135deg,var(--ink) 0%,var(--ink-2) 100%);
  color:#fff;padding:56px 0;
}
@media (min-width:1024px){.cta-band{padding:76px 0;}}
.cta-band h2{font-size:24px;}
@media (min-width:1024px){.cta-band h2{font-size:30px;}}
.cta-band p{margin-top:14px;color:rgba(255,255,255,.78);max-width:640px;font-size:16px;}
.cta-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:640px){.rel-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.rel-grid{grid-template-columns:repeat(3,1fr);}}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(0,194,168,.32);}
.rel-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.rel-body{padding:20px 22px 24px;}
.rel-body h3{font-size:17.5px;margin-bottom:8px;}
.rel-body p{color:var(--muted);font-size:14.8px;}
.rel-more{margin-top:14px;display:inline-flex;align-items:center;gap:6px;color:var(--brand-dark);font-weight:700;font-size:14.5px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.76);padding:56px 0 28px;margin-top:0;}
.footer-grid{display:grid;gap:32px;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:1.6fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand .logo-name{color:#fff;}
.footer-brand .logo-sub{color:rgba(255,255,255,.55);}
.footer-brand p{margin-top:16px;font-size:14.5px;line-height:1.85;max-width:380px;}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:14px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.7);transition:color .18s ease;}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13.5px;color:rgba(255,255,255,.6);
}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:grid;grid-template-columns:repeat(5,1fr);
  height:56px;background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
@media (min-width:768px){.mobile-tabbar{display:none;}}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11.5px;color:var(--muted);font-weight:600;
}
.tab-item i{font-size:16px;}
.tab-item::before{
  content:'';position:absolute;top:0;left:50%;transform:translateX(-50%) scaleX(0);
  width:28px;height:2px;background:var(--brand);border-radius:2px;transition:transform .18s ease;
}
.tab-item.active{color:var(--brand-dark);font-weight:800;}
.tab-item.active::before{transform:translateX(-50%) scaleX(1);}
@media (max-width:767px){body{padding-bottom:76px;}}

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

/* roulang page: category4 */
:root{
    --brand:#00C2A8;
    --brand-deep:#05897A;
    --action:#FF6B2C;
    --lime:#C8F53C;
    --ink:#0E1519;
    --ink-2:#16241F;
    --text:#16201F;
    --muted:#5C6B6B;
    --bg:#F6F7F4;
    --soft:#EAF1EE;
    --card:#FFFFFF;
    --line:#E2E7E3;
    --r-card:16px;
    --r-btn:12px;
    --r-badge:999px;
    --r-img:14px;
    --sh-1:0 1px 2px rgba(14,21,25,.06);
    --sh-2:0 10px 28px rgba(14,21,25,.08);
    --header-h:72px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    background:var(--bg);
    color:var(--text);
    font-size:16.5px;
    line-height:1.8;
    font-weight:400;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;transition:color .18s ease,opacity .18s ease;}
  button,input,select,textarea{font:inherit;color:inherit;}
  h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.28;color:var(--text);}
  p{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

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

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(246,247,244,.94);
    border-bottom:1px solid transparent;
    transition:background .22s ease,border-color .22s ease,box-shadow .22s ease;
  }
  .site-header.scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:var(--sh-1);}
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:var(--header-h);transition:height .22s ease;}
  .site-header.scrolled .header-inner{height:60px;}

  .logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .logo-mark{
    width:36px;height:36px;border-radius:11px;flex-shrink:0;
    display:flex;align-items:center;justify-content:center;
    background:linear-gradient(140deg,var(--brand),var(--brand-deep));
    color:#fff;font-size:15px;box-shadow:0 6px 16px rgba(0,194,168,.26);
  }
  .logo-text{display:flex;flex-direction:column;line-height:1.15;}
  .logo-name{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--text);}
  .logo-sub{font-size:11.5px;color:var(--muted);letter-spacing:.06em;}

  .desktop-nav{display:none;align-items:center;gap:4px;}
  @media (min-width:768px){ .desktop-nav{display:flex;} }
  @media (min-width:768px) and (max-width:1023px){ .desktop-nav .nav-link{padding:8px 8px;font-size:14px;} }
  .nav-link{
    position:relative;padding:8px 13px;border-radius:9px;
    font-size:15px;font-weight:500;color:var(--muted);
    transition:color .18s ease,background .18s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:50%;right:50%;bottom:3px;height:2px;
    background:var(--brand);border-radius:2px;
    transition:left .22s ease,right .22s ease;
  }
  .nav-link:hover{color:var(--text);}
  .nav-link:hover::after{left:13px;right:13px;}
  .nav-link.active{color:var(--brand-deep);font-weight:700;}
  .nav-link.active::before{
    content:"";position:absolute;top:1px;left:50%;transform:translateX(-50%);
    width:5px;height:5px;border-radius:50%;background:var(--brand);
  }

  .header-cta{display:flex;align-items:center;gap:10px;}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--r-btn);border:1.5px solid transparent;
    font-weight:600;cursor:pointer;white-space:nowrap;
    transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .btn:active{transform:translateY(0);}
  .btn-sm{padding:9px 16px;font-size:14px;}
  .btn-md{padding:12px 22px;font-size:15.5px;}
  .btn-lg{padding:14px 28px;font-size:16.5px;}
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(0,194,168,.28);}
  .btn-primary:hover{background:#12cdb4;transform:translateY(-1px);box-shadow:0 12px 26px rgba(0,194,168,.34);}
  .btn-ghost{border-color:var(--brand);color:var(--brand-deep);background:transparent;}
  .btn-ghost:hover{background:rgba(0,194,168,.09);transform:translateY(-1px);}
  .btn-light{background:#fff;color:var(--ink);}
  .btn-light:hover{background:var(--lime);transform:translateY(-1px);box-shadow:0 12px 26px rgba(0,0,0,.22);}
  .btn-outline-light{border-color:rgba(255,255,255,.5);color:#fff;background:transparent;}
  .btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;}
  .btn:disabled{opacity:.55;filter:saturate(.5);cursor:not-allowed;transform:none;}

  /* ---------- hero ---------- */
  .cat-hero{
    position:relative;overflow:hidden;background:var(--ink);
    min-height:340px;display:flex;align-items:flex-end;
    padding:64px 0 40px;
  }
  .cat-hero::before{
    content:"";position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;
    transform:scale(1.02);
  }
  .cat-hero::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(158deg,rgba(14,21,25,.94) 0%,rgba(14,21,25,.78) 42%,rgba(22,36,31,.6) 100%);
  }
  .hero-inner{position:relative;z-index:2;width:100%;}
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.68);margin-bottom:18px;flex-wrap:wrap;}
  .breadcrumb a:hover{color:var(--lime);}
  .breadcrumb i{font-size:9px;opacity:.7;}
  .hero-badge{
    display:inline-flex;align-items:center;gap:7px;
    padding:6px 14px;border-radius:var(--r-badge);
    background:rgba(200,245,60,.14);border:1px solid rgba(200,245,60,.4);
    color:var(--lime);font-size:13px;font-weight:600;margin-bottom:16px;
  }
  .hero-badge i{font-size:11px;}
  .hero-title{
    color:#fff;font-size:clamp(28px,5.2vw,42px);line-height:1.2;font-weight:800;
    letter-spacing:-.01em;max-width:820px;
  }
  .hero-title em{font-style:normal;color:var(--brand);}
  .hero-lead{
    margin-top:16px;max-width:660px;color:rgba(255,255,255,.82);
    font-size:16px;line-height:1.85;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
  .hero-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);}
  .hero-meta-item{display:flex;flex-direction:column;gap:2px;}
  .hero-meta-item strong{color:#fff;font-size:19px;font-weight:800;}
  .hero-meta-item span{font-size:12.5px;color:rgba(255,255,255,.6);letter-spacing:.04em;}

  /* ---------- anchor bar ---------- */
  .anchor-bar{
    position:sticky;top:60px;z-index:40;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--sh-1);
  }
  .anchor-inner{display:flex;align-items:center;gap:6px;overflow-x:auto;padding:10px 0;scrollbar-width:none;}
  .anchor-inner::-webkit-scrollbar{display:none;}
  .anchor-link{
    flex-shrink:0;padding:7px 14px;border-radius:var(--r-badge);
    font-size:14px;font-weight:600;color:var(--muted);background:var(--soft);
    transition:background .18s ease,color .18s ease;
  }
  .anchor-link:hover{background:var(--brand);color:#fff;}

  /* ---------- sections ---------- */
  .section{padding:56px 0;}
  @media (min-width:768px){ .section{padding:88px 0;} }
  .section-soft{background:var(--soft);}
  .section-head{max-width:760px;margin-bottom:28px;}
  @media (min-width:768px){ .section-head{margin-bottom:34px;} }
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:700;color:var(--brand-deep);
    letter-spacing:.1em;text-transform:uppercase;margin-bottom:12px;
  }
  .eyebrow::before{content:"";width:20px;height:2px;background:var(--action);border-radius:2px;}
  .section-title{font-size:clamp(22px,3.2vw,30px);line-height:1.3;}
  .section-desc{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.85;}

  /* ---------- cards ---------- */
  .grid-3{display:grid;grid-template-columns:1fr;gap:20px;}
  @media (min-width:768px){ .grid-3{grid-template-columns:repeat(2,1fr);gap:22px;} }
  @media (min-width:1024px){ .grid-3{grid-template-columns:repeat(3,1fr);gap:24px;} }

  .card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
    padding:24px;box-shadow:var(--sh-1);
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,194,168,.32);}
  .card-icon{
    width:44px;height:44px;border-radius:13px;display:flex;align-items:center;justify-content:center;
    background:var(--soft);color:var(--brand-deep);font-size:17px;margin-bottom:16px;
  }
  .card h3{font-size:18px;margin-bottom:10px;}
  .card p{color:var(--muted);font-size:15.5px;line-height:1.8;}
  .tag{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 11px;border-radius:var(--r-badge);
    background:var(--soft);color:var(--brand-deep);
    font-size:12.5px;font-weight:600;letter-spacing:.02em;
  }
  .tag-action{background:rgba(255,107,44,.12);color:#C94F19;}
  .tag-lime{background:rgba(200,245,60,.35);color:#4C6A00;}

  /* ---------- check block with image ---------- */
  .split{display:grid;grid-template-columns:1fr;gap:24px;align-items:center;}
  @media (min-width:1024px){ .split{grid-template-columns:1.05fr .95fr;gap:44px;} }
  .split-media{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-2);}
  .split-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;}
  .check-list{display:grid;gap:14px;margin-top:22px;}
  .check-item{display:flex;gap:13px;align-items:flex-start;padding:14px 16px;background:#fff;border:1px solid var(--line);border-radius:13px;}
  .check-item i{color:var(--brand);font-size:15px;margin-top:4px;}
  .check-item h4{font-size:15.5px;font-weight:700;margin-bottom:4px;}
  .check-item p{font-size:14.5px;color:var(--muted);line-height:1.75;}

  /* ---------- steps ---------- */
  .steps{display:grid;gap:18px;counter-reset:step;}
  @media (min-width:768px){ .steps{grid-template-columns:repeat(2,1fr);gap:22px;} }
  @media (min-width:1024px){ .steps{grid-template-columns:repeat(4,1fr);gap:20px;} }
  .step-card{
    position:relative;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-card);padding:24px 22px 22px;box-shadow:var(--sh-1);
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .step-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,194,168,.32);}
  .step-num{
    display:inline-flex;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:12px;
    background:var(--ink);color:var(--lime);
    font-size:15px;font-weight:800;margin-bottom:16px;
  }
  .step-card h3{font-size:17.5px;margin-bottom:9px;}
  .step-card p{font-size:14.8px;color:var(--muted);line-height:1.78;}
  .step-note{margin-top:14px;font-size:13px;color:var(--brand-deep);font-weight:600;display:flex;align-items:center;gap:6px;}

  /* ---------- spec list ---------- */
  .spec-panel{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    overflow:hidden;box-shadow:var(--sh-1);
  }
  .spec-row{
    display:grid;grid-template-columns:1fr;gap:4px;
    padding:16px 20px;border-bottom:1px solid var(--line);
    transition:background .18s ease;
  }
  .spec-row:last-child{border-bottom:none;}
  .spec-row:hover{background:var(--soft);}
  @media (min-width:640px){
    .spec-row{grid-template-columns:180px 1fr;gap:20px;align-items:baseline;}
  }
  .spec-key{font-size:14.5px;font-weight:700;color:var(--ink);}
  .spec-val{font-size:15px;color:var(--muted);line-height:1.75;}
  .spec-val strong{color:var(--text);font-weight:700;}

  /* ---------- faq ---------- */
  .faq-list{display:grid;gap:12px;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  }
  .faq-item[open]{background:var(--soft);border-color:rgba(0,194,168,.35);box-shadow:var(--sh-1);}
  .faq-item summary{
    list-style:none;cursor:pointer;padding:18px 20px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    font-size:16px;font-weight:700;color:var(--text);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"+";flex-shrink:0;color:var(--brand-deep);
    font-size:20px;font-weight:700;line-height:1;
    transition:transform .22s ease;
  }
  .faq-item[open] summary::after{content:"−";transform:rotate(180deg);}
  .faq-body{
    padding:0 20px 20px;border-left:3px solid var(--brand);margin-left:0;
    color:var(--muted);font-size:15.5px;line-height:1.85;
  }
  .faq-item[open] .faq-body{padding-left:17px;}

  /* ---------- related ---------- */
  .rel-card{
    display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,194,168,.32);}
  .rel-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
  .rel-body{padding:20px;display:flex;flex-direction:column;gap:9px;flex:1;}
  .rel-body h3{font-size:17px;}
  .rel-body p{font-size:14.5px;color:var(--muted);line-height:1.75;flex:1;}
  .rel-link{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:700;color:var(--brand-deep);}
  .rel-card:hover .rel-link{color:var(--action);}

  /* ---------- CTA band ---------- */
  .cta-band{
    position:relative;overflow:hidden;
    background:linear-gradient(120deg,#0E1519 0%,#16241F 100%);
    padding:56px 0;
  }
  @media (min-width:768px){ .cta-band{padding:80px 0;} }
  .cta-band::before{
    content:"";position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-3.webp');
    background-size:cover;background-position:center;
    opacity:.16;
  }
  .cta-inner{position:relative;z-index:2;display:grid;gap:26px;align-items:center;}
  @media (min-width:1024px){ .cta-inner{grid-template-columns:1.15fr .85fr;gap:48px;} }
  .cta-band h2{color:#fff;font-size:clamp(22px,3.2vw,30px);line-height:1.32;}
  .cta-band p{color:rgba(255,255,255,.76);margin-top:14px;font-size:16px;line-height:1.85;max-width:620px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
  .cta-facts{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
  .cta-fact{
    background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
    border-radius:13px;padding:16px;
  }
  .cta-fact strong{display:block;color:#fff;font-size:20px;font-weight:800;}
  .cta-fact span{font-size:12.5px;color:rgba(255,255,255,.62);letter-spacing:.03em;}

  /* ---------- footer ---------- */
  .site-footer{background:linear-gradient(180deg,#0E1519,#16241F);color:rgba(255,255,255,.72);padding:56px 0 26px;}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
  @media (min-width:640px){ .footer-grid{grid-template-columns:repeat(2,1fr);} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;} }
  .footer-brand .logo-name{color:#fff;}
  .footer-brand .logo-sub{color:rgba(255,255,255,.55);}
  .footer-brand p{margin-top:16px;font-size:14.8px;line-height:1.85;color:rgba(255,255,255,.62);max-width:330px;}
  .footer-col h3{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:.02em;}
  .footer-col ul{display:grid;gap:11px;}
  .footer-col a{font-size:14.5px;color:rgba(255,255,255,.68);}
  .footer-col a:hover{color:var(--brand);}
  .footer-bottom{
    margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:13px;color:rgba(255,255,255,.52);
  }

  /* ---------- mobile tab ---------- */
  .mobile-tab{
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    display:flex;background:#fff;border-top:1px solid var(--line);
    padding-bottom:env(safe-area-inset-bottom);
    box-shadow:0 -6px 20px rgba(14,21,25,.07);
  }
  .mobile-tab a{
    flex:1;height:56px;position:relative;
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    font-size:11px;color:var(--muted);font-weight:500;
  }
  .mobile-tab a i{font-size:16px;}
  .mobile-tab a.active{color:var(--brand-deep);font-weight:700;}
  .mobile-tab a.active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:28px;height:2px;background:var(--brand);border-radius:0 0 4px 4px;
  }
  @media (min-width:768px){ .mobile-tab{display:none;} }
  @media (max-width:767px){ body{padding-bottom:72px;} }

  @media (max-width:520px){
    .logo-sub{display:none;}
    .hero-meta{gap:16px;}
    .card{padding:20px;}
  }

  @media (prefers-reduced-motion:reduce){
    *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  }