/* roulang page: index */
:root{
  --c-primary:#12A594;
  --c-primary-deep:#0B7A6E;
  --c-primary-soft:#E4F6F3;
  --c-accent:#FF7A45;
  --c-accent-soft:#FFEDE4;
  --c-gold:#FFB020;
  --c-ink:#0F2A2B;
  --c-ink-2:#4A6462;
  --c-ink-3:#8AA09E;
  --c-line:#DCE9E7;
  --c-bg:#F6FBFA;
  --c-surface:#FFFFFF;
  --c-dark:#0D2E2C;
  --brand-grad:linear-gradient(120deg,#17BFAE 0%,#0E8C86 55%,#0B6F6B 100%);
  --action-grad:linear-gradient(120deg,#FF8F5A 0%,#FF6B35 100%);
  --shadow-1:0 2px 8px rgba(11,122,110,.06);
  --shadow-2:0 18px 40px -12px rgba(11,122,110,.22);
  --r-lg:28px;
  --r-md:16px;
  --r-sm:12px;
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:600;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:500;letter-spacing:.4px;
  color:var(--c-primary-deep);background:var(--c-primary-soft);
  border-radius:999px;padding:6px 14px;line-height:1.4;
}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.sec-title{font-size:clamp(22px,2.4vw,30px);font-weight:600;line-height:1.35;position:relative;padding-left:16px;}
.sec-title::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:4px;background:var(--brand-grad);}
.sec-desc{max-width:640px;color:var(--c-ink-2);font-size:15px;margin-top:10px;padding-left:16px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:15px;font-weight:500;transition:gap .2s ease,color .2s ease;}
.link-arrow:hover{gap:10px;color:var(--c-primary-deep);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:14px;font-size:15.5px;font-weight:600;
  transition:transform .18s ease,box-shadow .２s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-grad);color:#fff;box-shadow:0 8px 20px -8px rgba(11,122,110,.55);}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 16px 32px -12px rgba(11,122,110,.6);}
.btn-action{background:var(--action-grad);color:#fff;box-shadow:0 8px 20px -8px rgba(255,107,53,.55);}
.btn-action:hover{filter:brightness(1.06);box-shadow:0 16px 32px -12px rgba(255,107,53,.6);}
.btn-ghost{background:#fff;color:var(--c-primary-deep);border:1px solid var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);}
.btn-ghost-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45);}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px;border-radius:12px;}
.btn:active{transform:scale(.98);}
.btn-white{background:#fff;color:var(--c-primary-deep);}
.btn-white:hover{background:#F2FCFA;}

.badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:500;line-height:1.4;border-radius:999px;padding:5px 12px;}
.badge-cat{background:var(--c-primary-soft);color:var(--c-primary-deep);}
.badge-ver{background:#fff;border:1px solid var(--c-line);color:var(--c-ink-2);font-variant-numeric:tabular-nums;}
.badge-lite{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.28);}
.badge-solid{background:var(--c-accent-soft);color:#C24E1E;}

.card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);box-shadow:var(--shadow-1);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#C9E2DE;}
.card-soft{background:var(--c-primary-soft);}
.icon-box{width:40px;height:40px;border-radius:12px;background:var(--c-primary-soft);color:var(--c-primary-deep);display:flex;align-items:center;justify-content:center;flex:none;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);
  transition:box-shadow .24s ease,border-color .24s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 6px 20px -14px rgba(11,122,110,.5);}
.nav-wrap{display:flex;align-items:center;gap:28px;height:var(--nav-h);}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;background:var(--brand-grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;flex:none;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:16.5px;font-weight:700;color:var(--c-ink);letter-spacing:.2px;}
.brand-sub{font-size:10px;color:var(--c-ink-3);letter-spacing:.2px;}
.nav-links{display:flex;align-items:center;gap:24px;flex:1;}
.nav-link{position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;transition:color .2s ease;white-space:nowrap;}
.nav-link:hover{color:var(--c-primary);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:-2px;width:16px;height:2px;border-radius:2px;background:var(--c-primary);}
.nav-right{display:flex;align-items:center;gap:14px;flex:none;}
.nav-search{position:relative;display:flex;align-items:center;}
.nav-search svg{position:absolute;left:12px;color:var(--c-ink-3);}
.nav-search input{
  width:220px;height:40px;border-radius:999px;border:1px solid var(--c-line);
  background:#fff;padding:0 14px 0 36px;font-size:14px;transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search input::placeholder{color:var(--c-ink-3);}
.nav-search input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(18,165,148,.14);}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--c-line);background:#fff;align-items:center;justify-content:center;}

/* drawer */
.drawer-mask{position:fixed;inset:0;background:rgba(13,46,44,.45);opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:80;}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:86%;max-width:360px;background:#fff;z-index:90;
  transform:translateX(100%);transition:transform .28s ease;padding:22px 20px;overflow-y:auto;
  display:flex;flex-direction:column;gap:6px;box-shadow:-16px 0 40px -20px rgba(13,46,44,.4);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;}
.drawer-link{display:flex;align-items:center;justify-content:space-between;height:52px;font-size:16px;color:var(--c-ink);border-bottom:1px solid var(--c-line);}
.drawer-link.is-active{color:var(--c-primary);font-weight:600;}
.drawer-actions{margin-top:18px;display:flex;flex-direction:column;gap:12px;}
.drawer-actions .btn{width:100%;}

/* ---------- hero ---------- */
.hero{padding:calc(var(--nav-h) + 24px) 0 0;position:relative;overflow:hidden;}
.hero::before{
  content:"";position:absolute;top:-120px;right:-140px;width:620px;height:620px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,165,148,.16),rgba(18,165,148,0) 68%);pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center;min-height:520px;padding-bottom:72px;position:relative;}
.hero-copy{max-width:560px;}
.hero h1{font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.25;margin:20px 0 18px;letter-spacing:-.4px;}
.hero h1 .hl{background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-sub{font-size:16.5px;color:var(--c-ink-2);line-height:1.85;max-width:520px;}
.hero-cta{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;}
.hero-meta{margin-top:20px;display:flex;flex-wrap:wrap;gap:8px 20px;font-size:13px;color:var(--c-ink-3);}
.hero-meta span{display:inline-flex;align-items:center;gap:6px;}
.hero-meta b{color:var(--c-ink-2);font-weight:600;font-variant-numeric:tabular-nums;}

.hero-visual{position:relative;}
.hero-card{
  position:relative;border-radius:var(--r-lg);overflow:hidden;min-height:400px;
  background-image:linear-gradient(120deg,rgba(17,191,174,.86),rgba(11,111,107,.88)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;padding:28px;
  box-shadow:0 30px 60px -30px rgba(11,122,110,.55);
}
.device{
  border-radius:18px;border:1px solid rgba(255,255,255,.55);background:rgba(255,255,255,.96);
  box-shadow:0 20px 44px -22px rgba(6,60,58,.5);overflow:hidden;
}
.device-bar{display:flex;align-items:center;gap:6px;padding:10px 14px;border-bottom:1px solid var(--c-line);background:#fff;}
.device-bar i{width:8px;height:8px;border-radius:50%;background:#D7E6E3;display:block;}
.device-bar span{margin-left:8px;font-size:11.5px;color:var(--c-ink-3);letter-spacing:.3px;}
.device img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.float-card{
  position:absolute;background:#fff;border-radius:var(--r-md);border:1px solid var(--c-line);
  box-shadow:0 16px 34px -18px rgba(11,122,110,.55);padding:12px 14px;
}
.float-stat{left:-18px;bottom:64px;}
.float-stat .fs-num{font-size:26px;font-weight:700;color:var(--c-gold);line-height:1.1;font-variant-numeric:tabular-nums;}
.float-stat .fs-label{font-size:12px;color:var(--c-ink-3);margin-top:2px;}
.float-qr{right:-14px;bottom:-14px;padding:8px;display:flex;flex-direction:column;align-items:center;gap:6px;}
.float-qr .qr{
  width:96px;height:96px;border-radius:12px;background:
   repeating-linear-gradient(90deg,#0F2A2B 0 6px,#fff 6px 12px),
   repeating-linear-gradient(0deg,#0F2A2B 0 6px,#fff 6px 12px);
  background-blend-mode:multiply;position:relative;overflow:hidden;
}
.float-qr .qr::after{
  content:"开";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:#fff;width:34px;height:34px;margin:auto;border-radius:8px;font-size:15px;font-weight:700;color:var(--c-primary-deep);
}
.float-qr .qr-label{font-size:12px;color:var(--c-ink-3);}

/* ---------- stats strip ---------- */
.stats-strip{background:var(--c-primary-soft);border-top:1px solid #D3EDE8;border-bottom:1px solid #D3EDE8;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.stat-item{display:flex;align-items:center;gap:14px;padding:22px 20px;border-right:1px dashed #C5E4DE;}
.stat-item:last-child{border-right:none;}
.stat-item .num{font-size:28px;font-weight:700;color:var(--c-gold);line-height:1.1;}
.stat-item .lbl{font-size:13px;color:var(--c-ink-2);line-height:1.5;}

/* ---------- value grid ---------- */
.value-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.vg-7{grid-column:span 7;}
.vg-5{grid-column:span 5;}
.vg-6{grid-column:span 6;}
.vg-stack{display:flex;flex-direction:column;gap:24px;}
.feature-lg{padding:24px;display:flex;flex-direction:column;gap:18px;}
.feature-lg img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-sm);}
.feature-sm{padding:22px;display:flex;gap:16px;flex:1;}
.feature-sm h3{font-size:18px;margin-bottom:6px;}
.feature-sm p{font-size:14.5px;line-height:1.75;color:var(--c-ink-2);margin:0;}
.feature-md{padding:24px;}
.feature-md h3{font-size:19px;margin:14px 0 8px;}
.feature-md p{font-size:14.5px;line-height:1.8;color:var(--c-ink-2);}

/* ---------- carousel ---------- */
.carousel-wrap{overflow:hidden;}
.track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 20px;scrollbar-width:none;
}
.track::-webkit-scrollbar{display:none;}
.shot-card{
  flex:0 0 340px;scroll-snap-align:start;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:16px;box-shadow:var(--shadow-1);
  transition:transform .24s ease,box-shadow .24s ease;
}
.shot-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.shot-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-sm);}
.shot-card h3{font-size:17px;margin:12px 0 6px;}
.shot-card p{font-size:14px;color:var(--c-ink-2);margin:0 0 10px;line-height:1.7;}
.track-progress{height:2px;background:#D8EAE7;border-radius:2px;overflow:hidden;}
.track-progress i{display:block;height:100%;width:0;background:var(--brand-grad);transition:width .2s ease;}
.track-nav{display:flex;gap:10px;}
.circle-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--c-primary);background:#fff;color:var(--c-primary);display:flex;align-items:center;justify-content:center;transition:background-color .2s ease,color .2s ease;}
.circle-btn:hover{background:var(--c-primary);color:#fff;}
.dots{display:none;justify-content:center;gap:8px;margin-top:16px;}
.dots i{width:8px;height:8px;border-radius:50%;background:#C7E3DE;display:block;}
.dots i.is-active{background:var(--c-primary);width:20px;border-radius:999px;}

/* ---------- system req ---------- */
.req-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.req-card{padding:24px;border-radius:var(--r-md);border:1px solid var(--c-line);background:#fff;}
.req-card.soft{background:var(--c-primary-soft);border-color:#CFEAE5;}
.req-card h3{font-size:18px;margin-bottom:6px;}
.req-card .req-note{font-size:13px;color:var(--c-ink-3);margin-bottom:12px;}
.req-row{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:52px;border-top:1px solid var(--c-line);}
.req-row:first-of-type{border-top:none;}
.req-row .k{display:flex;align-items:center;gap:10px;font-size:14.5px;color:var(--c-ink-2);}
.req-row .v{font-size:14.5px;font-weight:600;color:var(--c-ink);text-align:right;font-variant-numeric:tabular-nums;}
.tick{width:20px;height:20px;border-radius:50%;background:#fff;border:1px solid var(--c-primary);color:var(--c-primary-deep);display:flex;align-items:center;justify-content:center;font-size:11px;flex:none;}
.platform-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;}

/* ---------- reviews ---------- */
.reviews{background:var(--c-dark);color:rgba(255,255,255,.78);}
.reviews .sec-title{color:#fff;}
.reviews .sec-title::before{background:var(--action-grad);}
.reviews .sec-desc{color:rgba(255,255,255,.62);}
.review-stats{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.review-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:22px;
  transition:transform .24s ease,background-color .24s ease;
}
.review-card:hover{transform:translateY(-4px);background:rgba(255,255,255,.09);}
.stars{color:var(--c-gold);font-size:14px;letter-spacing:2px;margin-bottom:12px;}
.review-card p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.82);margin-bottom:18px;}
.review-user{display:flex;align-items:center;gap:12px;}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--brand-grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:600;flex:none;}
.review-user .name{color:#fff;font-size:14.5px;font-weight:600;}
.review-user .sub{font-size:12.5px;color:rgba(255,255,255,.5);}

/* ---------- download cta ---------- */
.dl-card{
  border-radius:var(--r-lg);padding:56px;position:relative;overflow:hidden;color:#fff;
  background-image:linear-gradient(120deg,rgba(16,180,165,.94),rgba(11,111,107,.95)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  box-shadow:0 34px 64px -30px rgba(11,122,110,.6);
}
.dl-card h2{color:#fff;font-size:clamp(22px,2.4vw,30px);margin-bottom:12px;}
.dl-card .dl-sub{color:rgba(255,255,255,.85);max-width:620px;font-size:15.5px;}
.dl-actions{display:flex;align-items:center;gap:16px;margin-top:28px;flex-wrap:wrap;}
.qr-card{width:132px;height:132px;border-radius:18px;background:#fff;padding:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;border:2px solid rgba(255,255,255,.65);}
.qr-card .qr{width:82px;height:82px;border-radius:10px;background:
  repeating-linear-gradient(90deg,#0F2A2B 0 5px,#fff 5px 10px),
  repeating-linear-gradient(0deg,#0F2A2B 0 5px,#fff 5px 10px);
  background-blend-mode:multiply;}
.qr-card span{font-size:11.5px;color:var(--c-ink-3);}
.dl-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;}

/* ---------- news list ---------- */
.news-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.news-main{grid-column:span 7;}
.news-side{grid-column:span 5;}
.news-card{overflow:hidden;display:block;}
.news-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.news-card .nc-body{padding:22px;}
.news-card h3{font-size:20px;line-height:1.45;margin:12px 0 10px;transition:color .2s ease;}
.news-card:hover h3{color:var(--c-primary);}
.news-card p{font-size:14.5px;color:var(--c-ink-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px;}
.news-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-ink-3);}
.news-item{display:flex;gap:16px;align-items:flex-start;padding:18px 20px;border-bottom:1px solid var(--c-line);transition:transform .2s ease,background-color .2s ease;}
.news-item:last-child{border-bottom:none;}
.news-item:hover{transform:translateX(2px);background:#FAFEFD;}
.news-item h4{font-size:15.5px;line-height:1.55;font-weight:600;color:var(--c-ink);overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;transition:color .2s ease;}
.news-item:hover h4{color:var(--c-primary);}
.news-item .ni-meta{display:flex;gap:10px;align-items:center;font-size:12.5px;color:var(--c-ink-3);margin-top:8px;}
.news-item img{width:96px;height:72px;object-fit:cover;border-radius:10px;flex:none;}
.news-panel{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);box-shadow:var(--shadow-1);overflow:hidden;}
.empty-state{min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:var(--c-primary-soft);border-radius:var(--r-md);border:1px solid #CFEAE5;padding:32px;text-align:center;}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;}
.faq-item.is-open{border-color:#BFE3DD;box-shadow:var(--shadow-1);}
.faq-q{width:100%;display:flex;align-items:center;gap:14px;justify-content:space-between;padding:18px 20px;min-height:62px;text-align:left;font-size:16px;font-weight:600;color:var(--c-ink);position:relative;}
.faq-q::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;background:var(--c-primary);opacity:0;transition:opacity .2s ease;}
.faq-item.is-open .faq-q::before{opacity:1;}
.faq-sign{width:24px;height:24px;border-radius:50%;border:1px solid var(--c-line);display:flex;align-items:center;justify-content:center;color:var(--c-primary);flex:none;font-size:15px;transition:transform .2s ease,background-color .2s ease,color .2s ease;}
.faq-item.is-open .faq-sign{transform:rotate(45deg);background:var(--c-primary);color:#fff;border-color:var(--c-primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a-inner{padding:0 20px 20px 20px;font-size:15px;line-height:1.8;color:var(--c-ink-2);max-width:720px;}

/* ---------- footer ---------- */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.7);margin-top:0;position:relative;}
.site-footer::before{content:"";display:block;height:3px;background:var(--brand-grad);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:36px;padding:64px 0 44px;}
.footer-title{font-size:13px;letter-spacing:.5px;color:rgba(255,255,255,.6);margin-bottom:16px;font-weight:600;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-main{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.5);}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin-bottom:18px;max-width:320px;}
.footer-contact{font-size:13.5px;color:rgba(255,255,255,.6);line-height:2;}
.footer-links a{display:block;line-height:34px;font-size:14.5px;color:rgba(255,255,255,.7);transition:color .2s ease,transform .2s ease;}
.footer-links a:hover{color:#6FE3D4;transform:translateX(2px);}
.footer-form{display:flex;gap:10px;margin-top:4px;}
.footer-form input{
  flex:1;height:48px;border-radius:12px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);padding:0 14px;font-size:14px;color:#fff;
}
.footer-form input::placeholder{color:rgba(255,255,255,.42);}
.footer-form input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(18,165,148,.22);}
.footer-tip{font-size:12.5px;color:rgba(255,255,255,.45);margin-top:12px;line-height:1.8;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.45);}

/* ---------- animation ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .24s ease-out,transform .24s ease-out;}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .nav-search input{width:180px;}
}
@media (max-width:1023px){
  :root{--nav-h:60px;}
  .nav-links{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:flex;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .hero-grid{grid-template-columns:1fr;gap:36px;min-height:auto;padding-bottom:56px;}
  .hero-visual{order:-1;}
  .hero-card{min-height:260px;padding:18px;}
  .hero-copy{max-width:none;}
  .float-stat{left:8px;bottom:auto;top:-14px;}
  .float-qr{right:8px;bottom:-16px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .stat-item{border-right:none;border-bottom:1px dashed #C5E4DE;}
  .stat-item:nth-child(odd){border-right:1px dashed #C5E4DE;}
  .stat-item:nth-child(3),.stat-item:nth-child(4){border-bottom:none;}
  .vg-7,.vg-5,.vg-6{grid-column:span 12;}
  .news-main,.news-side{grid-column:span 12;}
  .review-grid{grid-template-columns:1fr;}
  .req-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 36px;}
  .dl-card{padding:40px;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .hero{padding-top:calc(var(--nav-h) + 20px);}
  .hero h1{font-size:clamp(26px,7vw,32px);}
  .hero-sub{font-size:15.5px;}
  .hero-cta{flex-direction:column;align-items:stretch;}
  .hero-cta .btn{width:100%;}
  .hero-card{min-height:220px;padding:14px;border-radius:22px;}
  .float-qr{display:none;}
  .float-stat{top:-12px;left:10px;padding:10px 12px;}
  .float-stat .fs-num{font-size:22px;}
  .stat-item{padding:18px 14px;gap:10px;}
  .stat-item .num{font-size:24px;}
  .stats-grid{grid-template-columns:1fr;}
  .stat-item{border-right:none !important;border-bottom:1px dashed #C5E4DE;}
  .stat-item:last-child{border-bottom:none;}
  .value-grid{gap:16px;}
  .vg-stack{gap:16px;}
  .sec-head{margin-bottom:26px;}
  .sec-desc{padding-left:0;font-size:14.5px;}
  .sec-title{padding-left:14px;}
  .shot-card{flex:0 0 78%;}
  .track-nav{display:none;}
  .dots{display:flex;}
  .dl-card{padding:28px;border-radius:22px;}
  .dl-actions{flex-direction:column;align-items:stretch;}
  .dl-actions .btn{width:100%;}
  .qr-card{width:108px;height:108px;margin:0 auto;align-self:center;}
  .qr-card .qr{width:66px;height:66px;}
  .news-item img{width:84px;height:64px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-form{flex-direction:column;}
  .footer-form .btn{width:100%;}
  .footer-bottom{justify-content:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .reveal{transform:none;opacity:1;}
}

/* roulang page: article */
:root{
  --c-primary:#12A594;
  --c-primary-deep:#0B7A6E;
  --c-primary-soft:#E4F6F3;
  --c-accent:#FF7A45;
  --c-accent-soft:#FFEDE4;
  --c-gold:#FFB020;
  --c-ink:#0F2A2B;
  --c-ink-2:#4A6462;
  --c-ink-3:#8AA09E;
  --c-line:#DCE9E7;
  --c-bg:#F6FBFA;
  --c-surface:#FFFFFF;
  --c-dark:#0D2E2C;
  --r-lg:28px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-1:0 2px 8px rgba(11,122,110,.06);
  --shadow-2:0 18px 40px -12px rgba(11,122,110,.22);
  --grad-brand:linear-gradient(120deg,#17BFAE 0%,#0E8C86 55%,#0B6F6B 100%);
  --grad-action:linear-gradient(120deg,#FF8F5A 0%,#FF6B35 100%);
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--c-primary);}
button{font-family:inherit;}
input,button,textarea{font-size:16px;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:600;line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 通用按钮 / 徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:0 22px;height:48px;border-radius:14px;border:1px solid transparent;
  font-size:15px;font-weight:500;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease;
}
.btn svg{flex:0 0 auto;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px -8px rgba(18,165,148,.85);}
.btn-primary:hover{background:#16B7A5;color:#fff;box-shadow:0 14px 28px -10px rgba(18,165,148,.75);}
.btn-primary:active{transform:scale(.98);}
.btn-brand{background:var(--grad-brand);color:#fff;box-shadow:0 8px 22px -10px rgba(11,122,110,.8);}
.btn-brand:hover{color:#fff;filter:brightness(1.06);box-shadow:0 16px 32px -12px rgba(11,122,110,.7);}
.btn-brand:active{transform:scale(.98);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);}
.btn-line-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn-line-light:hover{background:rgba(255,255,255,.14);color:#fff;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:999px;}
.btn-block{width:100%;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:14px;font-weight:500;
}
.btn-text:hover{color:var(--c-primary-deep);}
.btn-text:hover svg{transform:translateX(2px);}
.btn-text svg{transition:transform .2s ease;}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:500;letter-spacing:.4px;
}
.badge-soft{background:var(--c-primary-soft);color:var(--c-primary-deep);}
.badge-out{border:1px solid var(--c-line);color:var(--c-ink-2);font-variant-numeric:tabular-nums;}
.badge-accent{background:var(--c-accent-soft);color:#C2440F;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 6px 20px -14px rgba(11,122,110,.5);}
.nav-wrap{
  height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:32px;height:32px;border-radius:10px;background:var(--grad-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;
  box-shadow:0 6px 14px -8px rgba(11,122,110,.9);flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:16px;font-weight:700;color:var(--c-ink);letter-spacing:.2px;}
.brand-sub{font-size:11px;color:var(--c-ink-3);letter-spacing:.2px;}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:-2px;width:16px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:translateX(-50%) scaleX(0);transform-origin:center;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after,.nav-link.is-active::after{transform:translateX(-50%) scaleX(1);}
.nav-link.is-active{color:var(--c-primary);font-weight:500;}
.nav-right{display:flex;align-items:center;gap:12px;}
.nav-search{
  display:flex;align-items:center;gap:8px;width:220px;height:40px;padding:0 14px;
  border:1px solid var(--c-line);border-radius:999px;background:#fff;color:var(--c-ink-3);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--c-ink);}
.nav-search input::placeholder{color:var(--c-ink-3);}
.nav-search:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(18,165,148,.14);}
.nav-toggle{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:12px;background:#fff;cursor:pointer;
}
.nav-mask{
  position:fixed;inset:0;background:rgba(13,46,44,.45);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;z-index:70;
}
.nav-mask.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:86%;max-width:360px;background:#fff;z-index:80;
  transform:translateX(102%);transition:transform .28s ease;padding:22px 20px 28px;
  display:flex;flex-direction:column;gap:6px;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;}
.drawer-close{
  width:36px;height:36px;border-radius:12px;border:1px solid var(--c-line);background:#fff;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;height:52px;
  border-bottom:1px solid var(--c-line);font-size:16px;color:var(--c-ink);
}
.drawer-link:hover{color:var(--c-primary);}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:20px;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:20px 0 0;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-3);flex-wrap:wrap;}
.crumb a{color:var(--c-ink-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#B9CDCB;}
.crumb .current{color:var(--c-ink-3);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头部 ---------- */
.article-head{padding:22px 0 0;}
.article-title{
  font-size:clamp(26px,3vw,34px);font-weight:700;color:var(--c-ink);line-height:1.32;max-width:900px;
}
.article-meta{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:18px;
  font-size:13px;color:var(--c-ink-3);font-variant-numeric:tabular-nums;
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C7D8D6;}
.article-banner{
  margin:28px 0 0;border-radius:20px;overflow:hidden;border:1px solid var(--c-line);
  background:var(--c-primary-soft);aspect-ratio:16/6;
}
.article-banner img{width:100%;height:100%;object-fit:cover;}

/* ---------- 文章布局 ---------- */
.article-wrap{
  display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:40px;
  padding:36px 0 96px;align-items:start;
}
.article-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:36px 40px 40px;box-shadow:var(--shadow-1);
}
.article-body{max-width:760px;font-size:16.5px;line-height:1.9;color:var(--c-ink-2);}
.article-body > * + *{margin-top:1.2em;}
.article-body h2{
  position:relative;font-size:clamp(20px,2.2vw,26px);font-weight:600;color:var(--c-ink);
  margin-top:40px;padding-left:16px;line-height:1.4;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:4px;background:var(--c-primary);
}
.article-body h3{
  position:relative;font-size:19px;font-weight:600;color:var(--c-ink);margin-top:30px;padding-left:16px;
}
.article-body h3::before{
  content:"";position:absolute;left:2px;top:.62em;width:7px;height:7px;border-radius:50%;background:var(--c-primary);
}
.article-body p{margin-top:1.1em;color:var(--c-ink-2);}
.article-body strong{color:var(--c-ink);font-weight:600;}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(18,165,148,.35);}
.article-body a:hover{border-bottom-color:var(--c-primary);}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-top:.6em;line-height:1.9;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--c-primary);
}
.article-body ol{counter-reset:olc;}
.article-body ol li{counter-increment:olc;}
.article-body ol li::before{
  content:counter(olc);position:absolute;left:0;top:.42em;font-size:12px;font-weight:600;color:var(--c-primary);
}
.article-body blockquote{
  margin-top:1.5em;background:var(--c-primary-soft);border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-sm) var(--r-sm) 0;padding:18px 22px;color:var(--c-ink);
}
.article-body blockquote p{margin-top:.4em;color:var(--c-ink);}
.article-body img{border-radius:var(--r-sm);margin:1.6em auto;box-shadow:var(--shadow-1);}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--c-ink-3);text-align:center;margin-top:10px;}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;border:1px solid var(--c-line);
  border-radius:var(--r-sm);overflow:hidden;font-size:15px;margin-top:1.5em;
}
.article-body th{background:var(--c-primary-soft);color:var(--c-ink);font-weight:600;text-align:left;}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--c-line);}
.article-body tr:last-child td{border-bottom:0;}
.article-body pre{
  background:#0D2E2C;color:#D6F3EE;padding:18px 20px;border-radius:var(--r-sm);overflow-x:auto;
  font-size:14px;line-height:1.75;margin-top:1.5em;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;
  background:var(--c-primary-soft);color:var(--c-primary-deep);padding:2px 6px;border-radius:6px;
}
.article-body pre code{background:transparent;color:inherit;padding:0;}
.empty-state{
  border:1px dashed var(--c-line);background:var(--c-primary-soft);border-radius:var(--r-md);
  padding:48px 24px;text-align:center;
}
.empty-state h3{font-size:20px;color:var(--c-ink);}
.empty-state p{margin-top:10px;font-size:15px;color:var(--c-ink-2);}
.empty-state .btn{margin-top:20px;}

/* ---------- 文末信息 ---------- */
.after-article{margin-top:36px;padding-top:28px;border-top:1px solid var(--c-line);}
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.tag-row .label{font-size:13px;color:var(--c-ink-3);}
.chip{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary-deep);font-size:13px;font-weight:500;
}
.chip:hover{background:#D3EFEA;color:var(--c-primary-deep);}
.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px;}
.pn-card{
  display:flex;align-items:center;gap:12px;padding:18px 20px;border:1px solid var(--c-line);
  border-radius:var(--r-md);background:#fff;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.pn-card:hover{border-color:var(--c-primary);box-shadow:var(--shadow-1);transform:translateY(-2px);}
.pn-card .pn-label{font-size:12px;color:var(--c-ink-3);letter-spacing:.4px;}
.pn-card .pn-title{
  font-size:15px;color:var(--c-ink);font-weight:500;margin-top:4px;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.pn-card:hover .pn-title{color:var(--c-primary);}
.pn-right{justify-content:flex-end;text-align:right;}

/* ---------- 侧栏 ---------- */
.side-stack{display:flex;flex-direction:column;gap:20px;position:sticky;top:calc(var(--nav-h) + 20px);}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--shadow-1);
}
.side-title{font-size:15px;font-weight:600;color:var(--c-ink);margin-bottom:14px;}
.side-list li + li{border-top:1px solid var(--c-line);}
.side-list a{display:block;padding:12px 0;font-size:14.5px;color:var(--c-ink-2);line-height:1.6;}
.side-list a:hover{color:var(--c-primary);}
.info-row{display:flex;align-items:center;justify-content:space-between;font-size:14px;padding:9px 0;border-bottom:1px dashed var(--c-line);}
.info-row:last-child{border-bottom:0;}
.info-row span:first-child{color:var(--c-ink-3);font-size:13px;}
.info-row span:last-child{color:var(--c-ink);font-variant-numeric:tabular-nums;}
.side-cta{
  background:var(--grad-brand);color:#fff;border-radius:var(--r-md);padding:24px 22px;border:0;
}
.side-cta h4{color:#fff;font-size:17px;}
.side-cta p{color:rgba(255,255,255,.86);font-size:14px;margin-top:8px;line-height:1.75;}
.side-cta .btn{margin-top:16px;background:#fff;color:var(--c-primary-deep);}
.side-cta .btn:hover{background:#F1FCFA;color:var(--c-primary-deep);}

/* ---------- 分类入口卡 ---------- */
.section{padding:88px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:500;letter-spacing:.5px;
  color:var(--c-primary-deep);background:var(--c-primary-soft);border-radius:999px;padding:6px 14px;
}
.section-title{font-size:clamp(22px,2.4vw,30px);font-weight:600;color:var(--c-ink);margin-top:14px;}
.section-sub{font-size:15px;color:var(--c-ink-2);margin-top:10px;max-width:640px;}
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.cat-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:24px;display:flex;flex-direction:column;gap:12px;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#C9E4E0;}
.cat-icon{
  width:40px;height:40px;border-radius:12px;background:var(--c-primary-soft);color:var(--c-primary-deep);
  display:flex;align-items:center;justify-content:center;
}
.cat-card h3{font-size:18px;color:var(--c-ink);}
.cat-card p{font-size:14.5px;line-height:1.7;color:var(--c-ink-2);}
.cat-card .more{font-size:14px;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;margin-top:auto;}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;
  transition:box-shadow .22s ease,border-color .22s ease;
}
.faq-item.is-open{border-color:#C9E4E0;box-shadow:var(--shadow-1);}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;min-height:60px;font-size:16px;font-weight:500;color:var(--c-ink);position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;
  background:var(--c-primary);transform:scaleY(0);transform-origin:top;transition:transform .22s ease;
}
.faq-item.is-open .faq-q::before{transform:scaleY(1);}
.faq-icon{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary-deep);
  display:flex;align-items:center;justify-content:center;font-size:16px;line-height:1;
  transition:transform .22s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .26s ease;
}
.faq-a-inner{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--c-ink-2);max-width:720px;}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  border-radius:var(--r-lg);background:var(--grad-brand);color:#fff;position:relative;overflow:hidden;
  padding:56px;box-shadow:0 24px 60px -30px rgba(11,122,110,.9);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle at 84% 18%,rgba(255,255,255,.22),transparent 42%),
                   radial-gradient(circle at 8% 88%,rgba(255,255,255,.14),transparent 46%);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px);position:relative;z-index:1;}
.cta-band p{color:rgba(255,255,255,.88);margin-top:12px;font-size:15px;max-width:620px;position:relative;z-index:1;}
.cta-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;position:relative;z-index:1;}
.cta-band .btn-white{background:#fff;color:var(--c-primary-deep);}
.cta-band .btn-white:hover{background:#F2FCFB;color:var(--c-primary-deep);}
.cta-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;position:relative;z-index:1;}
.cta-meta .pill{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);color:#fff;font-size:13px;
  font-variant-numeric:tabular-nums;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-dark);color:rgba(255,255,255,.72);margin-top:0;
  border-top:3px solid transparent;
  border-image:var(--grad-brand) 1;
  padding:72px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;}
.footer-brand .brand-text .brand-main{color:#fff;}
.footer-brand .brand-text .brand-sub{color:rgba(255,255,255,.55);}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);}
.footer-contact{margin-top:14px;font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.55);}
.footer-title{font-size:13px;letter-spacing:.5px;color:rgba(255,255,255,.6);margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;}
.footer-links a{
  color:rgba(255,255,255,.78);font-size:14.5px;line-height:34px;transition:color .2s ease,transform .2s ease;
}
.footer-links a:hover{color:#7FE3D6;transform:translateX(2px);}
.footer-form{display:flex;flex-direction:column;gap:10px;}
.footer-form input{
  height:48px;border-radius:12px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);
  color:#fff;padding:0 14px;outline:0;transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-form input::placeholder{color:rgba(255,255,255,.42);}
.footer-form input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(18,165,148,.22);}
.footer-tip{font-size:12.5px;color:rgba(255,255,255,.45);margin-top:10px;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .24s ease-out,transform .24s ease-out;}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:flex;}
  .article-wrap{grid-template-columns:1fr;gap:32px;padding-bottom:72px;}
  .side-stack{position:static;}
  .cat-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:72px 0;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .article-card{padding:26px 22px 30px;border-radius:20px;}
  .article-banner{aspect-ratio:16/9;border-radius:16px;}
  .pn-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .cat-grid{grid-template-columns:1fr;}
  .cta-band{padding:34px 24px;border-radius:22px;}
  .cta-btns .btn{width:100%;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .crumb .current{max-width:200px;}
}
@media (max-width:519px){
  :root{--nav-h:56px;}
  .brand-sub{font-size:10px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .article-meta{font-size:12.5px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#12A594;
  --c-primary-deep:#0B7A6E;
  --c-primary-soft:#E4F6F3;
  --c-accent:#FF7A45;
  --c-accent-soft:#FFEDE4;
  --c-gold:#FFB020;
  --c-ink:#0F2A2B;
  --c-ink-2:#4A6462;
  --c-ink-3:#8AA09E;
  --c-line:#DCE9E7;
  --c-bg:#F6FBFA;
  --c-surface:#FFFFFF;
  --c-dark:#0D2E2C;
  --brand-grad:linear-gradient(120deg,#17BFAE 0%,#0E8C86 55%,#0B6F6B 100%);
  --action-grad:linear-gradient(120deg,#FF8F5A 0%,#FF6B35 100%);
  --r-lg:28px;
  --r-md:16px;
  --r-sm:12px;
  --sh-1:0 2px 8px rgba(11,122,110,.06);
  --sh-2:0 18px 40px -12px rgba(11,122,110,.22);
  --ease:cubic-bezier(.24,.68,.36,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.85;color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 24px;border-radius:14px;border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
  white-space:nowrap;
}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--brand-grad);color:#fff;box-shadow:0 10px 24px -12px rgba(11,122,110,.55)}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 16px 32px -12px rgba(11,122,110,.6)}
.btn-accent{background:var(--action-grad);color:#fff;box-shadow:0 10px 24px -12px rgba(255,107,53,.6)}
.btn-accent:hover{filter:brightness(1.06);box-shadow:0 16px 32px -12px rgba(255,107,53,.62)}
.btn-ghost{background:#fff;border-color:var(--c-primary);color:var(--c-primary-deep)}
.btn-ghost:hover{background:var(--c-primary-soft)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.8)}
.btn-white{background:#fff;color:var(--c-primary-deep)}
.btn-white:hover{background:#F1FBF9}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:12px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary-deep);font-size:14px;font-weight:600}
.link-arrow svg{transition:transform .24s var(--ease)}
.link-arrow:hover svg{transform:translateX(3px)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}

/* ============ 徽章 ============ */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:500;letter-spacing:.4px;padding:5px 12px;border-radius:999px}
.badge-soft{background:var(--c-primary-soft);color:var(--c-primary-deep)}
.badge-line{border:1px solid var(--c-line);color:var(--c-ink-2);background:#fff}
.badge-accent{background:var(--c-accent-soft);color:#C24A18}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:500;letter-spacing:.6px;color:var(--c-primary-deep);background:var(--c-primary-soft);padding:6px 14px;border-radius:999px}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 8px 24px -18px rgba(11,122,110,.5)}
.nav-wrap{display:flex;align-items:center;gap:26px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:32px;height:32px;border-radius:10px;flex-shrink:0;
  background:var(--brand-grad);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-main{font-size:16px;font-weight:700;color:var(--c-ink);letter-spacing:.5px}
.brand-sub{font-size:9.5px;color:var(--c-ink-3);letter-spacing:.2px}
.nav-links{display:flex;align-items:center;gap:22px;margin-left:8px}
.nav-link{position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;transition:color .2s var(--ease)}
.nav-link:hover{color:var(--c-primary)}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;bottom:0;width:16px;height:2px;border-radius:2px;background:var(--c-primary);
}
.nav-right{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav-search{
  display:flex;align-items:center;gap:8px;width:220px;height:40px;
  border:1px solid var(--c-line);border-radius:999px;padding:0 14px;background:#fff;
  color:var(--c-ink-3);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(18,165,148,.14)}
.nav-search input{border:0;outline:none;background:transparent;font-size:14px;width:100%;color:var(--c-ink)}
.nav-search input::placeholder{color:var(--c-ink-3)}
.nav-toggle{display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--c-line);align-items:center;justify-content:center;background:#fff}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(13,46,44,.45);opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:86%;max-width:360px;background:#fff;z-index:95;
  transform:translateX(100%);transition:transform .28s var(--ease);
  padding:20px;overflow-y:auto;box-shadow:-20px 0 48px -24px rgba(13,46,44,.4);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer-close{width:38px;height:38px;border-radius:12px;border:1px solid var(--c-line);font-size:18px;color:var(--c-ink-2);display:flex;align-items:center;justify-content:center}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;font-size:16px;color:var(--c-ink);border-bottom:1px solid var(--c-line);
}
.drawer-links a.is-active{color:var(--c-primary);font-weight:600}
.drawer-links a:hover{color:var(--c-primary)}
.drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:22px}

/* ============ 分类横幅 ============ */
.page-hero{
  position:relative;overflow:hidden;border-radius:0 0 28px 28px;
  background:var(--brand-grad);
  padding:calc(64px + 40px) 0 52px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;opacity:.14;mix-blend-mode:overlay;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.28) 0%,rgba(255,255,255,0) 68%);
}
.page-hero .container{position:relative;z-index:2}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.75);margin-bottom:20px}
.crumbs a:hover{color:#fff;text-decoration:underline}
.crumbs span.sep{opacity:.6}
.crumbs .current{color:#fff;font-weight:600}
.page-hero h1{
  font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.25;color:#fff;letter-spacing:.5px;
  max-width:760px;
}
.page-hero p.lead{margin-top:16px;font-size:16px;color:rgba(255,255,255,.86);max-width:640px;line-height:1.8}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-tags span{
  font-size:13px;color:#fff;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.26);
}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.sec-head .left{max-width:660px}
.sec-title{
  position:relative;font-size:clamp(22px,2.4vw,30px);font-weight:600;color:var(--c-ink);line-height:1.35;
  padding-left:16px;margin-top:14px;
}
.sec-title::before{content:"";position:absolute;left:0;top:6px;bottom:4px;width:4px;border-radius:3px;background:var(--c-primary)}
.sec-desc{margin-top:14px;font-size:15px;color:var(--c-ink-2);line-height:1.85;max-width:640px}

/* ============ 交替图文行 ============ */
.alt-row{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center}
.alt-row + .alt-row{margin-top:72px}
.alt-text{grid-column:span 6}
.alt-media{grid-column:span 6}
.alt-row.reverse .alt-text{order:2}
.alt-row.reverse .alt-media{order:1}
.alt-text h3{font-size:clamp(19px,2vw,22px);font-weight:600;color:var(--c-ink);line-height:1.45}
.alt-text p{margin-top:14px;font-size:15.5px;line-height:1.9}
.alt-list{margin-top:18px;display:flex;flex-direction:column;gap:12px}
.alt-list li{display:flex;gap:10px;font-size:15px;color:var(--c-ink-2)}
.alt-list li svg{flex-shrink:0;margin-top:5px}
.alt-media .shot{
  border-radius:20px;overflow:hidden;border:1px solid var(--c-line);background:#fff;
  box-shadow:var(--sh-1);transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.alt-media .shot:hover{box-shadow:var(--sh-2);transform:translateY(-4px)}
.alt-media .shot img{width:100%;aspect-ratio:16/10;object-fit:cover}
.alt-media figcaption{font-size:13px;color:var(--c-ink-3);margin-top:12px;text-align:center}

/* 数据徽章行 */
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:64px}
.stat-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-1);text-align:left;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.stat-num{font-size:32px;font-weight:700;color:var(--c-gold);line-height:1.1;letter-spacing:.5px}
.stat-num small{font-size:15px;font-weight:600;color:var(--c-ink);margin-left:4px}
.stat-label{font-size:13px;color:var(--c-ink-3);margin-top:8px}

/* ============ 7/5 错位卡 ============ */
.stagger{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#C6E3DF}
.card-lg{grid-column:span 7;border-radius:24px;padding:28px}
.card-col{grid-column:span 5;display:flex;flex-direction:column;gap:24px}
.card-lg .cover{border-radius:16px;overflow:hidden;margin-bottom:22px;border:1px solid var(--c-line)}
.card-lg .cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.card h3{font-size:19px;font-weight:600;color:var(--c-ink);line-height:1.45}
.card p{margin-top:12px;font-size:14.5px;line-height:1.8}
.icon-box{
  width:40px;height:40px;border-radius:12px;background:var(--c-primary-soft);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary-deep);flex-shrink:0;
}
.card-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.card-soft{background:var(--c-primary-soft);border-color:#CFE9E5}

/* ============ 排行列表（关注度） ============ */
.rank-wrap{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.rank-main{grid-column:span 8;background:#fff;border:1px solid var(--c-line);border-radius:24px;padding:12px 28px;box-shadow:var(--sh-1)}
.rank-side{grid-column:span 4;display:flex;flex-direction:column;gap:24px}
.rank-item{display:flex;align-items:center;gap:16px;padding:18px 0;border-bottom:1px solid var(--c-line);transition:transform .2s var(--ease)}
.rank-item:last-child{border-bottom:0}
.rank-item:hover{transform:translateX(4px)}
.rank-item:hover .rank-title{color:var(--c-primary)}
.rank-no{
  width:30px;height:30px;border-radius:10px;background:var(--c-primary-soft);color:var(--c-primary-deep);
  font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.rank-item:nth-child(1) .rank-no{background:var(--c-accent-soft);color:#C24A18}
.rank-body{flex:1;min-width:0}
.rank-title{font-size:15.5px;font-weight:600;color:var(--c-ink);transition:color .2s var(--ease)}
.rank-meta{font-size:13px;color:var(--c-ink-3);margin-top:4px}
.count-badge{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;
  color:var(--c-primary-deep);background:var(--c-primary-soft);padding:5px 12px;border-radius:999px;flex-shrink:0;
}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.tag-cloud a{font-size:13.5px;padding:7px 14px;border-radius:999px;background:#fff;border:1px solid var(--c-line);color:var(--c-ink-2);transition:all .2s var(--ease)}
.tag-cloud a:hover{border-color:var(--c-primary);color:var(--c-primary-deep);background:var(--c-primary-soft)}
.avatar-group{display:flex;align-items:center;margin-top:18px}
.avatar-group span{
  width:36px;height:36px;border-radius:50%;border:2px solid #fff;margin-left:-10px;
  background:var(--brand-grad);color:#fff;font-size:12px;display:flex;align-items:center;justify-content:center;
}
.avatar-group span:first-child{margin-left:0}
.avatar-note{font-size:13px;color:var(--c-ink-3);margin-top:12px}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px 24px;align-items:start}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:15.5px;font-weight:600;color:var(--c-ink);text-align:left;line-height:1.55;
  position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;
  background:var(--c-primary);transform:scaleY(0);transform-origin:center;transition:transform .24s var(--ease);
}
.faq-item.is-open .faq-q::before{transform:scaleY(1)}
.faq-icon{
  width:26px;height:26px;border-radius:50%;border:1px solid var(--c-line);flex-shrink:0;
  display:flex;align-items:center;justify-content:center;color:var(--c-primary-deep);font-size:16px;
  transition:transform .24s var(--ease),background .24s var(--ease),color .24s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a p{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--c-ink-2);max-width:720px}

/* ============ 相关分类 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;align-items:flex-start;gap:14px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:22px;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#C6E3DF}
.rel-card h3{font-size:16.5px;font-weight:600;color:var(--c-ink)}
.rel-card p{font-size:14px;margin-top:8px;line-height:1.75}
.rel-arrow{margin-left:auto;color:var(--c-primary);flex-shrink:0;transition:transform .24s var(--ease)}
.rel-card:hover .rel-arrow{transform:translateX(4px)}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:28px;background:var(--brand-grad);
  padding:56px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:0 26px 60px -28px rgba(11,122,110,.6);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.1;
}
.cta-band .cta-text{position:relative;z-index:2;max-width:560px}
.cta-band h2{font-size:clamp(21px,2.3vw,27px);font-weight:700;color:#fff;line-height:1.4}
.cta-band p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.86);line-height:1.8}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{position:relative;background:var(--c-dark);color:rgba(255,255,255,.62);margin-top:96px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--brand-grad)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px;padding:64px 0 40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-main{color:#fff}
.footer-brand .brand-sub{color:rgba(255,255,255,.55)}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:280px}
.footer-contact{margin-top:16px;font-size:13.5px;line-height:2;color:rgba(255,255,255,.55)}
.footer-title{font-size:13px;letter-spacing:.5px;color:rgba(255,255,255,.6);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column}
.footer-links a{
  height:34px;display:flex;align-items:center;font-size:14px;color:rgba(255,255,255,.72);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-links a:hover{color:#5FE3D3;transform:translateX(2px)}
.footer-form{display:flex;flex-direction:column;gap:12px}
.footer-form input{
  height:48px;border-radius:12px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);color:#fff;padding:0 16px;font-size:14px;outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.footer-form input::placeholder{color:rgba(255,255,255,.4)}
.footer-form input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(18,165,148,.22)}
.footer-tip{font-size:12.5px;color:rgba(255,255,255,.42);margin-top:10px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .24s ease-out,transform .24s ease-out}
.reveal.is-visible{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .section{padding:88px 0}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-search{display:none}
  .nav-toggle{display:flex}
  .section{padding:72px 0}
  .section-tight{padding:64px 0}
  .alt-text,.alt-media{grid-column:span 12}
  .alt-row.reverse .alt-text,.alt-row.reverse .alt-media{order:0}
  .alt-media{order:-1}
  .alt-row + .alt-row{margin-top:56px}
  .stat-row{grid-template-columns:repeat(3,1fr);gap:16px}
  .card-lg,.card-col{grid-column:span 12}
  .rank-main,.rank-side{grid-column:span 12}
  .rank-main{padding:8px 22px}
  .faq-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .cta-band{padding:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 32px}
}
@media (max-width:639px){
  .container{padding:0 16px}
  .nav-wrap{height:56px;gap:14px}
  .section{padding:56px 0}
  .section-tight{padding:52px 0}
  .page-hero{padding:calc(56px + 28px) 0 40px;border-radius:0 0 22px 22px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .stat-row{grid-template-columns:1fr;gap:16px}
  .stat-card{padding:20px}
  .card-lg{padding:22px}
  .rank-item{gap:12px;padding:16px 0}
  .cta-band{padding:28px;border-radius:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 0 28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .brand-sub{font-size:9px}
  .hero-tags span{font-size:12px;padding:5px 12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important}
  .reveal{opacity:1!important;transform:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --c-primary:#12A594;
  --c-primary-deep:#0B7A6E;
  --c-primary-soft:#E4F6F3;
  --c-accent:#FF7A45;
  --c-accent-soft:#FFEDE4;
  --c-gold:#FFB020;
  --c-ink:#0F2A2B;
  --c-ink-2:#4A6462;
  --c-ink-3:#8AA09E;
  --c-line:#DCE9E7;
  --c-bg:#F6FBFA;
  --c-surface:#FFFFFF;
  --c-dark:#0D2E2C;
  --brand-gradient:linear-gradient(120deg,#17BFAE 0%,#0E8C86 55%,#0B6F6B 100%);
  --action-gradient:linear-gradient(120deg,#FF8F5A 0%,#FF6B35 100%);
  --radius-lg:28px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-1:0 2px 8px rgba(11,122,110,.06);
  --shadow-2:0 18px 40px -12px rgba(11,122,110,.22);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
.site-body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
.site-body img{max-width:100%;display:block;border:0}
.site-body a{color:var(--c-primary);text-decoration:none;transition:color .22s ease}
.site-body a:hover{color:var(--c-primary-deep)}
.site-body button{font-family:inherit;cursor:pointer}
.site-body input{font-family:inherit}
.site-body ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}

.container{max-width:1200px;margin:0 auto;padding:0 24px}
.mono-num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";letter-spacing:.2px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;
  transition:box-shadow .26s ease,border-color .26s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--c-line);
  box-shadow:0 8px 22px -16px rgba(11,122,110,.55);
}
.nav-wrap{display:flex;align-items:center;gap:26px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;border-radius:10px;
  background:var(--brand-gradient);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;letter-spacing:0;
  box-shadow:0 6px 14px -8px rgba(11,122,110,.75);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-main{font-size:15.5px;font-weight:700;color:var(--c-ink);letter-spacing:.2px}
.brand-sub{font-size:9.5px;color:var(--c-ink-3);letter-spacing:.4px;margin-top:1px}
.nav-links{display:flex;align-items:center;gap:22px;margin-left:6px}
.nav-link{
  position:relative;font-size:14.5px;color:var(--c-ink-2);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:-2px;height:2px;width:0;
  background:var(--c-primary);transform:translateX(-50%);
  transition:width .24s ease;
}
.nav-link:hover{color:var(--c-primary)}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{width:16px}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{
  display:flex;align-items:center;gap:8px;width:220px;height:38px;
  padding:0 14px;border:1px solid var(--c-line);border-radius:999px;
  background:#fff;color:var(--c-ink-3);transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search input{
  width:100%;border:0;outline:none;background:transparent;
  font-size:13.5px;color:var(--c-ink);
}
.nav-search input::placeholder{color:var(--c-ink-3)}
.nav-search:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(18,165,148,.14)}
.nav-toggle{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:12px;background:#fff;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:14px;font-size:15px;font-weight:600;
  border:1px solid transparent;transition:transform .2s ease,box-shadow .26s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  text-decoration:none;line-height:1;
}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:12px}
.btn-primary{
  background:var(--brand-gradient);color:#fff;
  box-shadow:0 10px 24px -14px rgba(11,122,110,.9);
}
.btn-primary:hover{color:#fff;filter:brightness(1.06);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:scale(.98)}
.btn-outline{
  background:#fff;color:var(--c-primary-deep);border-color:var(--c-primary);
}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-deep)}
.btn-ghost{
  background:transparent;color:#fff;border-color:rgba(255,255,255,.45);
}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-light{background:#fff;color:var(--c-primary-deep);box-shadow:0 12px 26px -18px rgba(13,46,44,.8)}
.btn-light:hover{color:var(--c-primary-deep);transform:translateY(-2px)}
.btn-block{width:100%}
.btn .ico{width:16px;height:16px;flex:0 0 auto}
.link-more{
  display:inline-flex;align-items:center;gap:4px;font-size:14px;font-weight:600;
}
.link-more svg{transition:transform .22s ease}
.link-more:hover svg{transform:translateX(3px)}

/* ============ 分类页横幅 ============ */
.page-hero{
  position:relative;overflow:hidden;background:var(--brand-gradient);
  border-radius:0 0 28px 28px;color:#fff;
  padding:52px 0 56px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.15;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.22),transparent 68%);
}
.hero-inner{position:relative;z-index:2;max-width:820px}
.breadcrumb{
  display:flex;align-items:center;gap:8px;font-size:13px;
  color:rgba(255,255,255,.72);margin-bottom:18px;
}
.breadcrumb a{color:rgba(255,255,255,.86)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:.5}
.hero-title{
  font-size:clamp(28px,3.6vw,42px);font-weight:700;line-height:1.25;
  color:#fff;margin:0 0 16px;letter-spacing:.2px;
}
.hero-sub{
  font-size:16px;line-height:1.85;color:rgba(255,255,255,.9);
  margin:0;max-width:640px;
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;
}
.hero-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
  color:#fff;
}

/* ============ 区块节奏 ============ */
.section{padding:88px 0 0}
.section:last-of-type{padding-bottom:88px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:500;letter-spacing:.4px;
  color:var(--c-primary-deep);background:var(--c-primary-soft);
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.section-title{
  font-size:clamp(22px,2.4vw,29px);font-weight:600;line-height:1.35;
  color:var(--c-ink);margin:0;
}
.section-title::before{
  content:"";display:inline-block;width:4px;height:20px;border-radius:2px;
  background:var(--c-primary);margin-right:12px;vertical-align:-2px;
}
.section-sub{margin:12px 0 0;font-size:15px;color:var(--c-ink-2);max-width:720px}

/* ============ 数据徽章条 ============ */
.quick-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  margin-top:-34px;position:relative;z-index:5;
}
.stat-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-md);
  padding:20px 22px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;gap:4px;
  transition:transform .26s ease,box-shadow .26s ease;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.stat-num{
  font-size:30px;font-weight:700;color:var(--c-gold);line-height:1.1;
}
.stat-label{font-size:13px;color:var(--c-ink-3)}

/* ============ 时间轴 ============ */
.timeline{margin-top:8px}
.tl-item{position:relative;display:grid;grid-template-columns:48px 1fr;gap:22px;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:23px;top:34px;bottom:-4px;width:2px;
  background:linear-gradient(180deg,var(--c-primary),rgba(18,165,148,.16));
}
.tl-item:last-child::before{display:none}
.tl-dot{
  width:34px;height:34px;border-radius:50%;background:var(--c-primary-soft);
  border:1px solid rgba(18,165,148,.35);color:var(--c-primary-deep);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;margin-top:2px;
}
.tl-body{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-md);
  padding:22px 24px;box-shadow:var(--shadow-1);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.tl-item:hover .tl-body{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(18,165,148,.4)}
.tl-title{font-size:19px;font-weight:600;color:var(--c-ink);margin:0 0 10px;line-height:1.45}
.tl-text{margin:0;font-size:15px;line-height:1.85;color:var(--c-ink-2)}
.tl-shot{
  margin-top:18px;border-radius:var(--radius-sm);overflow:hidden;
  border:1px solid var(--c-line);
}
.tl-shot img{width:100%;aspect-ratio:16/9;object-fit:cover}
.tl-shot figcaption{font-size:12.5px;color:var(--c-ink-3);padding:10px 14px;background:#fff}

/* ============ 系统要求 ============ */
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.spec-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-lg);
  padding:26px 26px 14px;box-shadow:var(--shadow-1);
}
.spec-card.is-recommend{background:var(--c-primary-soft);border-color:rgba(18,165,148,.28)}
.spec-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.spec-name-title{font-size:17.5px;font-weight:600;color:var(--c-ink);margin:0}
.spec-tag{
  font-size:12px;padding:4px 11px;border-radius:999px;
  background:#fff;color:var(--c-primary-deep);border:1px solid rgba(18,165,148,.3);
}
.spec-row{
  display:flex;align-items:center;gap:12px;
  min-height:52px;border-top:1px solid var(--c-line);font-size:14.5px;
}
.spec-row:first-of-type{border-top:0}
.spec-row .tick{width:20px;height:20px;flex:0 0 auto;color:var(--c-primary)}
.spec-row .k{color:var(--c-ink-2);flex:1}
.spec-row .v{color:var(--c-ink);font-weight:600}

/* ============ 教程卡片列表 ============ */
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.guide-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-md);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.guide-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(18,165,148,.4)}
.guide-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}
.guide-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.badge-cat{
  align-self:flex-start;font-size:12px;padding:4px 11px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary-deep);
}
.guide-title{font-size:16.5px;font-weight:600;color:var(--c-ink);margin:0;line-height:1.5}
.guide-title a{color:inherit}
.guide-title a:hover{color:var(--c-primary)}
.guide-desc{margin:0;font-size:14px;line-height:1.75;color:var(--c-ink-2)}
.guide-time{font-size:12.5px;color:var(--c-ink-3);margin-top:auto}

/* ============ 下载面板 ============ */
.download-panel{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:var(--brand-gradient);color:#fff;padding:56px;
}
.download-panel::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  opacity:.12;
}
.download-panel > *{position:relative;z-index:2}
.panel-title{font-size:clamp(22px,2.4vw,30px);font-weight:700;margin:0 0 12px;color:#fff;line-height:1.35}
.panel-sub{margin:0 0 28px;font-size:15.5px;color:rgba(255,255,255,.92);max-width:620px}
.panel-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px}
.pill-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 15px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.26);color:#fff;
}
.pill b{font-weight:700}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-md);
  overflow:hidden;transition:border-color .24s ease,box-shadow .24s ease;
}
.faq-item.is-open{border-color:rgba(18,165,148,.45);box-shadow:var(--shadow-2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;text-align:left;
  font-size:15.5px;font-weight:600;color:var(--c-ink);line-height:1.5;
}
.faq-q .bar{
  width:3px;height:18px;border-radius:2px;background:var(--c-primary);
  opacity:0;transform:scaleY(.3);transition:.22s ease;flex:0 0 auto;
}
.faq-item.is-open .faq-q .bar{opacity:1;transform:scaleY(1)}
.faq-q span.qtext{flex:1}
.faq-icon{
  width:26px;height:26px;flex:0 0 auto;border-radius:50%;
  border:1px solid var(--c-line);color:var(--c-primary-deep);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;line-height:1;transition:transform .22s ease,background-color .22s ease,color .22s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .28s ease;
}
.faq-item.is-open .faq-a{max-height:340px}
.faq-a p{margin:0;padding:0 22px 22px;font-size:14.5px;line-height:1.85;color:var(--c-ink-2);max-width:720px}

/* ============ 相关分类 ============ */
.cat-nav-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cat-nav-card{
  display:flex;align-items:flex-start;gap:16px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-md);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.cat-nav-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(18,165,148,.4)}
.cat-icon{
  width:40px;height:40px;flex:0 0 auto;border-radius:12px;background:var(--c-primary-soft);
  color:var(--c-primary-deep);display:flex;align-items:center;justify-content:center;
}
.cat-nav-title{font-size:16px;font-weight:600;color:var(--c-ink);margin:0 0 6px}
.cat-nav-desc{margin:0;font-size:13.5px;line-height:1.7;color:var(--c-ink-2)}
.cat-arrow{color:var(--c-primary);margin-left:auto;align-self:center}

/* ============ CTA 条 ============ */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  background:var(--brand-gradient);color:#fff;border-radius:var(--radius-lg);
  padding:36px 40px;position:relative;overflow:hidden;
}
.cta-bar::after{
  content:"";position:absolute;left:-80px;bottom:-140px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.18),transparent 70%);
}
.cta-bar > *{position:relative;z-index:2}
.cta-title{font-size:21px;font-weight:700;margin:0 0 6px;color:#fff}
.cta-text{margin:0;font-size:14.5px;color:rgba(255,255,255,.9)}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:88px;background:var(--c-dark);color:rgba(255,255,255,.72);
  border-top:3px solid transparent;
  background-image:linear-gradient(var(--c-dark),var(--c-dark)),var(--brand-gradient);
  background-origin:border-box;background-clip:padding-box,border-box;
  padding:64px 0 30px;position:relative;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-main{color:#fff}
.footer-brand .brand-sub{color:rgba(255,255,255,.55)}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin:0 0 14px}
.footer-contact{font-size:13.5px;line-height:1.95;color:rgba(255,255,255,.55)}
.footer-title{
  font-size:13px;letter-spacing:.5px;color:rgba(255,255,255,.6);
  margin-bottom:14px;font-weight:600;
}
.footer-links{display:flex;flex-direction:column}
.footer-links a{
  color:rgba(255,255,255,.8);font-size:14px;line-height:34px;
  transition:color .2s ease,transform .2s ease;transform:translateX(0);
}
.footer-links a:hover{color:#8FE4DA;transform:translateX(2px)}
.footer-form{display:flex;flex-direction:column;gap:10px}
.footer-form input{
  height:48px;border-radius:12px;border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.08);padding:0 16px;color:#fff;font-size:14px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-form input::placeholder{color:rgba(255,255,255,.42)}
.footer-form input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(18,165,148,.22)}
.footer-tip{font-size:12.5px;color:rgba(255,255,255,.42);margin:12px 0 0}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(13,46,44,.45);z-index:95;
  opacity:0;visibility:hidden;transition:opacity .26s ease,visibility .26s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:86%;max-width:360px;z-index:96;
  background:#fff;transform:translateX(102%);transition:transform .28s ease;
  padding:22px 22px 30px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{
  width:38px;height:38px;border-radius:12px;border:1px solid var(--c-line);
  background:#fff;color:var(--c-ink);display:flex;align-items:center;justify-content:center;
}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;font-size:16px;color:var(--c-ink-2);
  border-bottom:1px solid var(--c-line);
}
.drawer-link:hover{color:var(--c-primary)}
.drawer-link.is-active{color:var(--c-primary);font-weight:600}
.drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:24px}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);animation:revealIn .24s ease-out forwards}
.reveal:nth-child(2){animation-delay:.06s}
.reveal:nth-child(3){animation-delay:.12s}
.reveal:nth-child(4){animation-delay:.18s}
@keyframes revealIn{to{opacity:1;transform:translateY(0)}}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .nav-links,.nav-search{display:none}
  .nav-toggle{display:flex}
  .quick-stats{grid-template-columns:repeat(2,1fr)}
  .spec-grid,.faq-grid{grid-template-columns:1fr}
  .guide-grid{grid-template-columns:repeat(2,1fr)}
  .cat-nav-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0 0}
  .section:last-of-type{padding-bottom:72px}
  .download-panel{padding:40px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .nav-wrap{height:56px;gap:12px}
  .nav-right .btn{display:none}
  .page-hero{padding:34px 0 44px;border-radius:0 0 20px 20px}
  .hero-sub{font-size:15px}
  .quick-stats{grid-template-columns:1fr;margin-top:-24px;gap:14px}
  .guide-grid,.cat-nav-grid{grid-template-columns:1fr}
  .cta-bar{padding:28px 24px;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .download-panel{padding:28px}
  .panel-actions .btn{width:100%}
  .tl-item{grid-template-columns:38px 1fr;gap:14px}
  .tl-item::before{left:18px}
  .tl-dot{width:30px;height:30px;font-size:13px}
  .section{padding:56px 0 0}
  .section:last-of-type{padding-bottom:64px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .site-footer{margin-top:64px}
  .spec-card{padding:22px 20px 10px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --c-primary:#12A594;
  --c-primary-deep:#0B7A6E;
  --c-primary-soft:#E4F6F3;
  --c-accent:#FF7A45;
  --c-accent-soft:#FFEDE4;
  --c-gold:#FFB020;
  --c-ink:#0F2A2B;
  --c-ink-2:#4A6462;
  --c-ink-3:#8AA09E;
  --c-line:#DCE9E7;
  --c-bg:#F6FBFA;
  --c-surface:#FFFFFF;
  --c-dark:#0D2E2C;
  --grad-brand:linear-gradient(120deg,#17BFAE 0%,#0E8C86 55%,#0B6F6B 100%);
  --grad-action:linear-gradient(120deg,#FF8F5A 0%,#FF6B35 100%);
  --shadow-sm:0 2px 8px rgba(11,122,110,.06);
  --shadow-hover:0 18px 40px -12px rgba(11,122,110,.22);
  --r-lg:26px;
  --r-md:16px;
  --r-sm:12px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.35;letter-spacing:-.2px;}
h1{font-size:clamp(28px,4vw,42px);line-height:1.25;}
h2{font-size:clamp(22px,2.4vw,30px);font-weight:600;}
h3{font-size:18px;font-weight:600;line-height:1.4;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}

/* 容器与板块 */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:500;
  letter-spacing:.4px;color:var(--c-primary);margin-bottom:12px;
}
.eyebrow::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--c-primary);}
.section-title-wrap{position:relative;}
.section-desc{font-size:15px;color:var(--c-ink-2);max-width:640px;margin-top:10px;line-height:1.8;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;padding:14px 24px;border-radius:14px;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .24s ease,color .24s ease,box-shadow .24s ease,transform .18s ease,border-color .24s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 12px 24px -12px rgba(18,165,148,.7);}
.btn-primary:hover{background:#15b8a5;box-shadow:0 18px 32px -14px rgba(18,165,148,.8);}
.btn-primary:active{transform:scale(.98);}
.btn-outline{background:#fff;color:var(--c-primary-deep);border-color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-soft);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-ghost:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.7);}
.btn-white{background:#fff;color:var(--c-primary-deep);box-shadow:0 12px 26px -14px rgba(4,44,40,.55);}
.btn-white:hover{background:#F2FBFA;}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:999px;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:14px;font-weight:600;}
.text-link svg{transition:transform .2s ease;}
.text-link:hover svg{transform:translateX(3px);}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:90;background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;transition:border-color .24s ease,box-shadow .24s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 8px 24px -18px rgba(11,122,110,.6);}
.nav-wrap{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:10px;background:var(--grad-brand);
  color:#fff;font-size:16px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.16;}
.brand-main{font-size:16px;font-weight:700;color:var(--c-ink);}
.brand-sub{font-size:10px;color:var(--c-ink-3);letter-spacing:.3px;}
.nav-links{display:flex;align-items:center;gap:22px;margin-left:10px;}
.nav-link{position:relative;font-size:14.5px;color:var(--c-ink-2);padding:6px 0;transition:color .2s ease;}
.nav-link:hover{color:var(--c-primary);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:-4px;
  width:16px;height:2px;border-radius:2px;background:var(--c-primary);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-search{
  display:flex;align-items:center;gap:8px;height:40px;width:220px;padding:0 14px;
  border:1px solid var(--c-line);border-radius:999px;background:#fff;color:var(--c-ink-3);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(18,165,148,.14);}
.nav-search input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--c-ink);}
.nav-toggle{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:12px;background:#fff;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--c-primary);}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(13,46,44,.45);z-index:120;
  opacity:0;visibility:hidden;transition:opacity .26s ease,visibility .26s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:86%;max-width:360px;background:#fff;z-index:130;
  transform:translateX(102%);transition:transform .28s ease;display:flex;flex-direction:column;
  padding:20px 20px 28px;box-shadow:-20px 0 50px -30px rgba(11,122,110,.6);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;gap:10px;padding-bottom:16px;border-bottom:1px solid var(--c-line);}
.drawer-close{
  margin-left:auto;width:36px;height:36px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;font-size:20px;line-height:1;cursor:pointer;color:var(--c-ink-2);
}
.drawer-links{display:flex;flex-direction:column;margin:14px 0 0;}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;height:52px;font-size:16px;
  color:var(--c-ink);border-bottom:1px solid var(--c-line);
}
.drawer-links a::after{content:"›";color:var(--c-ink-3);font-size:18px;}
.drawer-links a.is-active{color:var(--c-primary);font-weight:600;}
.drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:auto;padding-top:24px;}
.drawer-actions .btn{width:100%;}

/* 页面横幅 */
.page-banner{position:relative;overflow:hidden;background-image:var(--grad-brand);padding:56px 0 60px;color:#fff;}
.page-banner::before{
  content:"";position:absolute;inset:0;background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;opacity:.16;
}
.page-banner::after{
  content:"";position:absolute;right:-160px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.24) 0%,rgba(255,255,255,0) 68%);
}
.page-banner .container{position:relative;z-index:2;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:18px;}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .current{color:rgba(255,255,255,.62);}
.page-banner h1{color:#fff;margin-bottom:14px;}
.banner-desc{font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.84);max-width:720px;margin:0;}

/* 数据徽章条 */
.data-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  margin-top:-34px;position:relative;z-index:5;
}
.data-badge{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:18px 20px;box-shadow:var(--shadow-sm);
}
.data-badge .num{
  font-size:26px;font-weight:700;color:var(--c-gold);line-height:1.2;
  font-variant-numeric:tabular-nums;font-family:Inter,system-ui,sans-serif;
}
.data-badge .num.plain{color:var(--c-primary);font-size:22px;}
.data-badge .label{font-size:13px;color:var(--c-ink-3);margin-top:4px;}

/* 筛选胶囊 */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.filter-pill{
  padding:8px 18px;border-radius:999px;border:1px solid var(--c-line);background:#fff;
  font-size:13.5px;color:var(--c-ink-2);cursor:pointer;transition:.2s ease;
}
.filter-pill:hover{border-color:var(--c-primary);color:var(--c-primary);}
.filter-pill.is-active{background:var(--c-primary-soft);border-color:var(--c-primary);color:var(--c-primary-deep);font-weight:600;}

/* 版本列表 */
.release-list{display:flex;flex-direction:column;gap:18px;}
.release-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:24px 26px;box-shadow:var(--shadow-sm);transition:box-shadow .24s ease,transform .24s ease,border-color .24s ease;
}
.release-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);border-color:#C8E3DF;}
.release-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding-bottom:14px;border-bottom:1px dashed var(--c-line);margin-bottom:14px;}
.version-pill{
  font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:14px;font-weight:700;color:var(--c-primary-deep);
  background:var(--c-primary-soft);border-radius:999px;padding:5px 14px;letter-spacing:.3px;
}
.version-pill.latest{background:var(--grad-brand);color:#fff;}
.release-channel{
  font-size:12.5px;color:var(--c-accent);border:1px solid var(--c-accent);
  background:var(--c-accent-soft);border-radius:999px;padding:3px 12px;
}
.release-date{font-size:13px;color:var(--c-ink-3);font-variant-numeric:tabular-nums;margin-left:auto;}
.release-body{display:flex;flex-direction:column;gap:10px;}
.release-body li{font-size:15px;line-height:1.85;color:var(--c-ink-2);padding-left:2px;}
.tag{
  display:inline-block;font-size:12px;font-weight:600;border-radius:6px;padding:2px 8px;margin-right:10px;
  vertical-align:1px;
}
.tag-new{background:var(--c-primary-soft);color:var(--c-primary-deep);}
.tag-fix{background:var(--c-accent-soft);color:#C9501F;}
.tag-opt{background:#FFF6E2;color:#9A6500;}

/* 更新通道 */
.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.channel-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:26px 24px;box-shadow:var(--shadow-sm);transition:box-shadow .24s ease,transform .24s ease;
}
.channel-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);}
.channel-icon{
  width:44px;height:44px;border-radius:12px;background:var(--c-primary-soft);color:var(--c-primary-deep);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.channel-card h3{margin-bottom:10px;}
.channel-card p{font-size:14.5px;line-height:1.8;color:var(--c-ink-2);}
.channel-meta{font-size:13px;color:var(--c-ink-3);margin-top:14px;padding-top:12px;border-top:1px solid var(--c-line);}

/* 校验与回退 */
.verify-grid{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:center;}
.verify-media img{border-radius:20px;border:1px solid var(--c-line);aspect-ratio:16/10;object-fit:cover;width:100%;box-shadow:var(--shadow-sm);}
.step-list{display:flex;flex-direction:column;gap:16px;margin-top:22px;}
.step-list li{display:flex;gap:14px;font-size:15px;line-height:1.8;color:var(--c-ink-2);}
.step-num{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary-deep);
  font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}

/* 相关分类 */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.related-card{
  display:flex;align-items:flex-start;gap:14px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:22px;box-shadow:var(--shadow-sm);
  transition:box-shadow .24s ease,transform .24s ease,border-color .24s ease;
}
.related-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);border-color:var(--c-primary);}
.related-icon{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;background:var(--c-primary-soft);
  color:var(--c-primary-deep);display:flex;align-items:center;justify-content:center;
}
.related-card h3{font-size:16px;margin-bottom:6px;}
.related-card p{font-size:13.5px;color:var(--c-ink-3);line-height:1.7;margin:0;}
.related-arrow{margin-left:auto;color:var(--c-ink-3);transition:transform .2s ease,color .2s ease;align-self:center;}
.related-card:hover .related-arrow{transform:translateX(3px);color:var(--c-primary);}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;background-image:var(--grad-brand);border-radius:var(--r-lg);
  padding:52px;color:#fff;box-shadow:0 24px 50px -26px rgba(11,122,110,.65);
}
.cta-band::before{
  content:"";position:absolute;inset:0;background-image:url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;opacity:.12;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{color:#fff;margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.84);font-size:15px;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.cta-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.chip{
  font-size:12.5px;color:rgba(255,255,255,.9);background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.28);border-radius:999px;padding:6px 14px;
  font-variant-numeric:tabular-nums;
}

/* 页脚 */
.site-footer{
  position:relative;background:var(--c-dark);color:rgba(255,255,255,.72);
  padding:64px 0 28px;margin-top:96px;
}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad-brand);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-main{color:#fff;font-size:16px;font-weight:700;}
.footer-brand .brand-sub{color:rgba(255,255,255,.5);font-size:10px;}
.footer-brand .brand-text{display:flex;flex-direction:column;line-height:1.16;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:300px;}
.footer-contact{font-size:13.5px;line-height:2;color:rgba(255,255,255,.6);margin-top:14px;}
.footer-title{font-size:13px;letter-spacing:.5px;color:rgba(255,255,255,.6);margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;}
.footer-links a{
  font-size:14px;line-height:34px;color:rgba(255,255,255,.78);
  transition:color .2s ease,transform .2s ease;
}
.footer-links a:hover{color:#6FE3D5;transform:translateX(2px);}
.footer-form{display:flex;flex-direction:column;gap:10px;}
.footer-form input{
  height:48px;border-radius:12px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);color:#fff;padding:0 16px;font-size:14px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-form input::placeholder{color:rgba(255,255,255,.4);}
.footer-form input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(18,165,148,.22);}
.footer-tip{font-size:12.5px;color:rgba(255,255,255,.45);margin-top:10px;}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.45);
}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .24s ease-out,transform .24s ease-out;}
.reveal.is-visible{opacity:1;transform:none;}

/* 响应式 */
@media (max-width:1023px){
  .nav-links,.nav-search{display:none;}
  .nav-toggle{display:flex;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .data-strip{grid-template-columns:repeat(2,1fr);}
  .channel-grid,.related-grid{grid-template-columns:1fr 1fr;}
  .verify-grid{grid-template-columns:1fr;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{padding:40px 32px;}
  .site-footer{margin-top:72px;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px;}
  .data-strip{grid-template-columns:1fr 1fr;gap:12px;}
  .data-badge{padding:14px 16px;}
  .data-badge .num{font-size:22px;}
  .channel-grid,.related-grid{grid-template-columns:1fr;}
  .release-item{padding:20px 18px;}
  .release-date{margin-left:0;width:100%;}
  .cta-band{padding:32px 22px;border-radius:20px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .page-banner{padding:38px 0 46px;}
  .data-strip{margin-top:-24px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --c-primary:#12A594;
  --c-primary-deep:#0B7A6E;
  --c-primary-soft:#E4F6F3;
  --c-accent:#FF7A45;
  --c-accent-soft:#FFEDE4;
  --c-gold:#FFB020;
  --c-ink:#0F2A2B;
  --c-ink-2:#4A6462;
  --c-ink-3:#8AA09E;
  --c-line:#DCE9E7;
  --c-bg:#F6FBFA;
  --c-surface:#FFFFFF;
  --c-dark:#0D2E2C;
  --brand-gradient:linear-gradient(120deg,#17BFAE 0%,#0E8C86 55%,#0B6F6B 100%);
  --accent-gradient:linear-gradient(120deg,#FF8F5A 0%,#FF6B35 100%);
  --r-lg:28px; --r-md:16px; --r-sm:12px; --r-pill:999px;
  --sh-1:0 2px 8px rgba(11,122,110,.06);
  --sh-2:0 18px 40px -12px rgba(11,122,110,.22);
  --sec-y:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--c-bg);color:var(--c-ink-2);
  font-size:16px;line-height:1.9;
  font-variant-numeric:tabular-nums;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer;background:none;border:0}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;transition:box-shadow .25s ease,border-color .25s ease,background .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 6px 18px -12px rgba(11,122,110,.28)}
.nav-wrap{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;border-radius:10px;background:var(--brand-gradient);
  color:#fff;font-weight:700;font-size:16px;display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px -6px rgba(11,122,110,.6);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-main{font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:.3px}
.brand-sub{font-size:10.5px;color:var(--c-ink-3);letter-spacing:.4px}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:8px}
.nav-link{
  position:relative;padding:8px 12px;font-size:15px;color:var(--c-ink-2);
  border-radius:10px;transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft)}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:0;
  width:16px;height:2px;border-radius:2px;background:var(--c-primary);
}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-search{
  display:flex;align-items:center;gap:8px;width:220px;height:40px;padding:0 14px;
  background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--r-pill);
  color:var(--c-ink-3);transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(18,165,148,.14)}
.nav-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--c-ink)}
.nav-search input::placeholder{color:var(--c-ink-3)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--c-line);
  align-items:center;justify-content:center;background:#fff;
}
.nav-drawer{
  position:fixed;top:0;right:0;height:100%;width:86%;max-width:360px;background:#fff;z-index:90;
  transform:translateX(102%);transition:transform .28s ease;padding:20px 22px 32px;overflow-y:auto;
  box-shadow:-24px 0 60px -30px rgba(13,46,44,.5);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(13,46,44,.45);z-index:80;opacity:0;visibility:hidden;
  transition:opacity .28s ease,visibility .28s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--c-line);display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--c-ink-2)}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;height:52px;font-size:16px;
  border-bottom:1px solid var(--c-line);color:var(--c-ink);
}
.drawer-links a.is-active{color:var(--c-primary);font-weight:600}
.drawer-group{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.drawer-foot{margin-top:26px;font-size:13px;color:var(--c-ink-3);line-height:1.9}
.drawer-foot a{display:block;padding:6px 0;color:var(--c-ink-2)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:14px;font-size:15px;font-weight:600;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:12px}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 10px 22px -12px rgba(11,122,110,.75)}
.btn-primary:hover{background:#15b6a3;box-shadow:0 16px 30px -14px rgba(11,122,110,.85)}
.btn-primary:active{transform:scale(.98)}
.btn-accent{background:var(--accent-gradient);color:#fff;box-shadow:0 12px 26px -14px rgba(255,107,53,.9)}
.btn-accent:hover{filter:brightness(1.06)}
.btn-accent:active{transform:scale(.98)}
.btn-outline{background:#fff;color:var(--c-primary);border:1px solid var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-soft)}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45)}
.btn-ghost:hover{background:rgba(255,255,255,.14)}
.btn-light{background:#fff;color:var(--c-primary-deep);box-shadow:0 12px 28px -16px rgba(0,0,0,.4)}
.btn-light:hover{background:#F2FFFC}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:14px;font-weight:600}
.link-arrow svg{transition:transform .2s ease}
.link-arrow:hover svg{transform:translateX(3px)}

/* ============ 通用板块 ============ */
.section{padding:var(--sec-y) 0}
.section--soft{background:var(--c-primary-soft)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:5px 14px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary-deep);font-size:12.5px;font-weight:600;letter-spacing:.4px;
}
.h2{
  position:relative;font-size:clamp(22px,2.4vw,30px);font-weight:600;color:var(--c-ink);line-height:1.35;
  padding-left:14px;margin-top:14px;
}
.h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--c-primary)}
.h3{font-size:19px;font-weight:600;color:var(--c-ink);line-height:1.4}
.lead{font-size:16px;line-height:1.9;color:var(--c-ink-2)}
.muted{color:var(--c-ink-3);font-size:13px}

/* ============ 顶部横幅 ============ */
.page-banner{
  position:relative;overflow:hidden;border-bottom-left-radius:28px;border-bottom-right-radius:28px;
  background:var(--brand-gradient);color:#fff;
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;opacity:.15;mix-blend-mode:overlay;
}
.page-banner .container{position:relative;z-index:2;padding-top:52px;padding-bottom:64px}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(255,255,255,.78);margin-bottom:22px;flex-wrap:wrap}
.crumb a:hover{color:#fff}
.crumb .sep{opacity:.6}
.crumb .current{color:rgba(255,255,255,.95)}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);
  font-size:12.5px;letter-spacing:.4px;margin-bottom:18px;
}
.page-banner h1{
  font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.25;letter-spacing:.5px;
  max-width:820px;margin-bottom:16px;
}
.page-banner p{max-width:700px;font-size:16px;line-height:1.9;color:rgba(255,255,255,.9)}

/* ============ 卡片 ============ */
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--sh-1);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#C7E4DF}
.card--soft{background:var(--c-primary-soft);border-color:#CFE9E5}
.card--lg{border-radius:var(--r-lg);padding:32px}
.icon-badge{
  width:40px;height:40px;border-radius:12px;background:var(--c-primary-soft);color:var(--c-primary-deep);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.tag{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary-deep);font-size:12.5px;font-weight:600;
}
.tag--accent{background:var(--c-accent-soft);color:#C24A18}
.tag--line{background:#fff;border:1px solid var(--c-line);color:var(--c-ink-2);font-weight:500}
.stat-num{font-size:30px;font-weight:700;color:var(--c-gold);line-height:1.2;font-variant-numeric:tabular-nums}

/* ============ 安全要点网格 ============ */
.safety-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.card h3{margin-bottom:10px}
.card p{font-size:15px;line-height:1.8;color:var(--c-ink-2)}

/* ============ 图文分栏 ============ */
.split{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:center}
.split-media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);
  box-shadow:var(--sh-1);background:#fff;
}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-list{margin-top:22px;display:flex;flex-direction:column;gap:14px}
.split-list li{display:flex;gap:12px;font-size:15px;line-height:1.75;color:var(--c-ink-2)}
.dot{flex:0 0 auto;width:20px;height:20px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary-deep);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;margin-top:4px}

/* ============ 报错速查列表 ============ */
.lookup{border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;background:#fff}
.lookup-row{display:grid;grid-template-columns:1fr 1.35fr;gap:20px;padding:20px 26px;border-bottom:1px solid var(--c-line);align-items:center}
.lookup-row:nth-child(odd){background:var(--c-primary-soft)}
.lookup-row:last-child{border-bottom:0}
.lookup-row strong{color:var(--c-ink);font-size:15.5px;font-weight:600}
.lookup-row span{font-size:14.5px;color:var(--c-ink-2)}

/* ============ FAQ 手风琴 ============ */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;
  transition:border-color .24s ease,box-shadow .24s ease;
}
.faq-item.is-open{border-color:#BFE3DE;box-shadow:var(--sh-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--c-ink);position:relative;line-height:1.6;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:var(--c-primary);opacity:0;transition:opacity .2s ease;
}
.faq-item.is-open .faq-q::before{opacity:1}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary-deep);font-size:16px;
  transition:transform .22s ease,background .22s ease,color .22s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a-inner{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--c-ink-2)}

/* ============ 问答双列卡 ============ */
.qa-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.qa-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:24px;box-shadow:var(--sh-1);transition:transform .24s ease,box-shadow .24s ease}
.qa-card--soft{background:var(--c-primary-soft);border-color:#CFE9E5}
.qa-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.qa-card h3{font-size:16.5px;color:var(--c-ink);font-weight:600;margin-bottom:10px;display:flex;gap:10px}
.qa-card p{font-size:14.8px;line-height:1.8}

/* ============ 相关分类 ============ */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cat-card{
  display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 24px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#BFE3DE}
.cat-card .cat-ico{
  width:40px;height:40px;border-radius:12px;background:var(--c-primary-soft);color:var(--c-primary-deep);
  display:flex;align-items:center;justify-content:center;margin-bottom:12px;
}
.cat-card h3{font-size:17px;color:var(--c-ink);font-weight:600;margin-bottom:6px}
.cat-card p{font-size:14px;color:var(--c-ink-2);line-height:1.75}

/* ============ CTA ============ */
.cta-wrap{padding:0 0 var(--sec-y)}
.cta-card{
  position:relative;overflow:hidden;border-radius:var(--r-lg);background:var(--brand-gradient);
  color:#fff;padding:56px;display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center;
}
.cta-card::after{
  content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;opacity:.1;
}
.cta-card > *{position:relative;z-index:2}
.cta-card h2{font-size:clamp(22px,2.4vw,29px);font-weight:700;line-height:1.35;margin-bottom:12px}
.cta-card p{color:rgba(255,255,255,.9);font-size:15.5px;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:var(--c-dark);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:0;
}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--brand-gradient)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-main{color:#fff}
.footer-brand .brand-sub{color:rgba(255,255,255,.55)}
.footer-desc{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);margin-bottom:16px;max-width:280px}
.footer-contact{font-size:13px;line-height:2;color:rgba(255,255,255,.55)}
.footer-title{font-size:13px;letter-spacing:.5px;color:rgba(255,255,255,.6);margin-bottom:16px}
.footer-links a{display:block;line-height:34px;font-size:14.5px;color:rgba(255,255,255,.78);transition:color .2s ease,transform .2s ease}
.footer-links a:hover{color:#6FE3D4;transform:translateX(2px)}
.footer-form{display:flex;gap:10px;flex-wrap:wrap}
.footer-form input{
  flex:1 1 150px;min-width:0;height:48px;padding:0 14px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.08);color:#fff;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-form input::placeholder{color:rgba(255,255,255,.45)}
.footer-form input:focus{border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(18,165,148,.28)}
.footer-form .btn{height:48px;padding:0 20px;border-radius:var(--r-sm)}
.footer-tip{margin-top:12px;font-size:12.5px;color:rgba(255,255,255,.45)}
.footer-bottom{
  margin-top:46px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .24s ease-out,transform .24s ease-out}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  :root{--sec-y:72px}
  .nav-links{display:none}
  .nav-search{display:none}
  .nav-toggle{display:flex}
  .split{grid-template-columns:1fr;gap:28px}
  .faq-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-card{grid-template-columns:1fr;padding:40px}
  .cta-actions{justify-content:flex-start}
}
@media (max-width:767px){
  :root{--sec-y:60px}
  .container{padding:0 18px}
  .nav-wrap{height:56px;gap:12px}
  .brand-sub{display:none}
  .page-banner .container{padding-top:34px;padding-bottom:44px}
  .page-banner{border-bottom-left-radius:20px;border-bottom-right-radius:20px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .safety-grid{grid-template-columns:1fr;gap:16px}
  .qa-grid{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:1fr}
  .lookup-row{grid-template-columns:1fr;gap:6px;padding:18px 20px}
  .card{padding:20px}
  .card--lg{padding:24px}
  .btn{width:100%}
  .btn.btn-inline{width:auto}
  .cta-actions{flex-direction:column}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  .brand-main{font-size:16px}
  .page-banner h1{font-size:26px}
  .stat-num{font-size:26px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:opacity .2s linear !important;animation:none !important}
  .reveal{transform:none}
  .card:hover,.cat-card:hover,.qa-card:hover{transform:none}
}