/* roulang page: index */
:root{
  --bg-0:#05090F;
  --bg-1:#0A1220;
  --bg-2:#0F1B2D;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --text-1:#EAF2FF;
  --text-2:#A9B7CC;
  --text-3:#6C7C93;
  --brand:#1FE3C2;
  --brand-deep:#0C8F79;
  --brand-soft:rgba(31,227,194,.12);
  --accent:#FF7A3D;
  --violet:#7C8CFF;
  --surface:rgba(255,255,255,.035);
  --surface-2:rgba(255,255,255,.06);
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:12px;
  --shadow-card:0 12px 32px rgba(0,0,0,.45);
  --container:1200px;
  --font-cn:'Noto Sans SC','Source Han Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  color:var(--text-1);
  background:var(--bg-0);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;border:0;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(31,227,194,.3);color:#fff;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.band-a{background:var(--bg-1);}
.band-b{background:var(--bg-2);}
.band-0{background:var(--bg-0);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:#FFFFFF;
  border-bottom:1px solid #E6ECF4;
  box-shadow:0 2px 12px rgba(11,18,32,.06);
}
.nav-inner{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.logo{
  display:flex;align-items:center;gap:10px;
  font-size:16px;font-weight:700;color:#0B1220;letter-spacing:.01em;white-space:nowrap;
  transition:color .2s;
}
.logo svg{flex:0 0 24px;}
.logo:hover{color:var(--brand-deep);}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-link{
  position:relative;display:inline-block;
  font-size:14px;font-weight:500;color:#33415A;padding:8px 0;
  transition:color .2s;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--brand-deep);border-radius:2px;
  transform:scaleX(0);transform-origin:center;transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand-deep);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-deep);font-weight:700;}
.nav-right{display:flex;align-items:center;gap:12px;}
.nav-search{position:relative;display:flex;align-items:center;}
.nav-search input{
  width:220px;height:44px;border-radius:999px;border:1px solid transparent;
  background:#F2F5F9;padding:0 18px 0 40px;font-size:13px;color:#33415A;
  transition:border-color .2s,background .2s,box-shadow .2s;
}
.nav-search input::placeholder{color:#8A99AE;}
.nav-search input:focus{
  outline:none;border-color:var(--brand-deep);background:#fff;
  box-shadow:0 0 0 3px rgba(12,143,121,.15);
}
.nav-search .search-ico{position:absolute;left:14px;top:50%;transform:translateY(-50%);pointer-events:none;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:14px;font-weight:700;border:1px solid transparent;white-space:nowrap;
  transition:transform .2s,box-shadow .2s,background .2s,border-color .2s,color .2s,filter .2s;
}
.btn-primary{
  background:linear-gradient(135deg,#1FE3C2,#0FB89C);color:#05211C;
  box-shadow:0 8px 24px rgba(31,227,194,.28);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 10px 32px rgba(31,227,194,.42);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text-1);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);}
.btn-nav{
  background:var(--brand-deep);color:#fff;height:44px;padding:0 20px;
  font-size:14px;font-weight:700;border-radius:12px;
}
.btn-nav:hover{filter:brightness(1.08);box-shadow:0 6px 18px rgba(12,143,121,.28);}
.btn-block{width:100%;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid #E6ECF4;border-radius:12px;
  background:#fff;align-items:center;justify-content:center;transition:border-color .2s;
}
.nav-toggle:hover{border-color:var(--brand-deep);}
.nav-toggle span{display:block;width:18px;height:2px;background:#0B1220;border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#0B1220;border-radius:2px;transition:transform .2s;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.mobile-drawer{
  position:fixed;left:0;right:0;top:60px;bottom:0;z-index:99;
  background:#FFFFFF;padding:8px 24px 40px;overflow-y:auto;
  transform:translateY(-10px);opacity:0;visibility:hidden;pointer-events:none;
  transition:transform .24s ease,opacity .24s ease,visibility .24s ease;
}
.mobile-drawer.is-open{transform:translateY(0);opacity:1;visibility:visible;pointer-events:auto;}
.drawer-link{
  display:block;padding:16px 0;font-size:16px;font-weight:500;color:#0B1220;
  border-bottom:1px solid #EEF2F8;transition:color .2s;
}
.drawer-link:hover,.drawer-link.is-active{color:var(--brand-deep);font-weight:700;}
.drawer-foot{padding-top:24px;display:flex;flex-direction:column;gap:16px;}
.drawer-search{
  width:100%;height:46px;border-radius:12px;border:1px solid #E6ECF4;background:#F2F5F9;
  padding:0 16px;font-size:14px;color:#33415A;
}
.drawer-search:focus{outline:none;border-color:var(--brand-deep);background:#fff;box-shadow:0 0 0 3px rgba(12,143,121,.14);}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;overflow:hidden;padding:88px 0 96px;
  background:
    radial-gradient(900px 520px at 84% 10%, rgba(31,227,194,.16), transparent 62%),
    radial-gradient(720px 480px at 4% 92%, rgba(124,140,255,.11), transparent 64%),
    var(--bg-0);
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;color:var(--brand);
  border:1px solid rgba(31,227,194,.3);background:rgba(31,227,194,.08);
  padding:7px 16px;border-radius:999px;margin-bottom:24px;
}
.hero h1{
  font-size:52px;line-height:1.2;font-weight:700;letter-spacing:.01em;
  color:var(--text-1);margin-bottom:22px;
}
.hero-sub{
  font-size:18px;line-height:1.8;color:var(--text-2);max-width:560px;margin-bottom:32px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:24px;}
.hero-trust li{
  display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-3);letter-spacing:.02em;
}
.hero-trust svg{flex:0 0 16px;}
.hero-visual{position:relative;}
.hero-glass{
  position:relative;border-radius:20px;overflow:hidden;
  background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.12);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow-card);
  padding:10px;
}
.hero-glass img{
  width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;border-radius:14px;
}
.hero-chip{
  position:absolute;right:-12px;bottom:-18px;
  background:#0C1728;border:1px solid rgba(31,227,194,.32);border-radius:14px;
  padding:14px 20px;box-shadow:0 16px 34px rgba(0,0,0,.5);
  display:flex;flex-direction:column;gap:2px;
}
.hero-chip strong{
  font-size:24px;font-weight:700;color:var(--brand);line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.hero-chip span{font-size:12px;color:var(--text-3);}

/* ---------- 板块头 ---------- */
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:32px;margin-bottom:48px;
}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--brand);font-weight:600;
}
.section-head h2{
  font-size:32px;line-height:1.3;font-weight:700;letter-spacing:.02em;margin-top:10px;
}
.section-desc{font-size:14px;line-height:1.8;color:var(--text-3);margin-top:12px;max-width:620px;}
.textlink{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
  transition:color .2s,gap .2s;white-space:nowrap;
}
.textlink::after{content:"→";transition:transform .2s ease;}
.textlink:hover{color:#5CF0DA;}
.textlink:hover::after{transform:translateX(3px);}

/* ---------- 频道入口 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.cat-card{
  display:block;padding:26px 24px;border-radius:var(--radius-card);
  background:var(--surface);border:1px solid var(--line);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.cat-card:hover{
  transform:translateY(-2px);border-color:rgba(31,227,194,.35);
  background:rgba(31,227,194,.05);box-shadow:0 0 24px rgba(31,227,194,.16);
}
.cat-ico{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(31,227,194,.1);border:1px solid rgba(31,227,194,.22);margin-bottom:18px;
}
.cat-card h3{font-size:15px;font-weight:600;letter-spacing:.02em;margin-bottom:8px;}
.cat-card p{font-size:12px;line-height:1.7;color:var(--text-3);}

/* ---------- 主推设备 ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.prod-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.prod-card:hover{
  transform:translateY(-4px);border-color:rgba(31,227,194,.35);
  box-shadow:0 0 24px rgba(31,227,194,.18);
}
.prod-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:#0B1526;}
.prod-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.prod-card:hover .prod-media img{transform:scale(1.04);}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;line-height:1;
}
.badge-hot{background:rgba(255,122,61,.16);color:#FF9865;border:1px solid rgba(255,122,61,.34);}
.badge-new{background:rgba(124,140,255,.16);color:#A6B0FF;border:1px solid rgba(124,140,255,.34);}
.badge-violet{background:rgba(124,140,255,.14);color:#A6B0FF;border:1px solid rgba(124,140,255,.3);}
.prod-media .badge{position:absolute;top:12px;right:12px;}
.prod-body{padding:20px;display:flex;flex-direction:column;flex:1 1 auto;}
.prod-body h3{
  font-size:16px;font-weight:600;line-height:1.45;letter-spacing:.01em;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.prod-spec{font-size:13px;line-height:1.7;color:var(--text-3);margin-top:8px;}
.prod-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
}
.price{display:flex;align-items:baseline;gap:8px;}
.price strong{
  font-size:22px;font-weight:700;color:var(--accent);line-height:1;
  font-variant-numeric:tabular-nums;
}
.price del{font-size:13px;color:var(--text-3);}
.btn-mini{
  display:inline-flex;align-items:center;justify-content:center;
  height:34px;padding:0 16px;border-radius:999px;
  border:1px solid rgba(31,227,194,.5);color:var(--brand);
  font-size:12px;font-weight:700;white-space:nowrap;background:transparent;
  transition:background .2s,color .2s,border-color .2s;
}
.btn-mini:hover{background:var(--brand);color:#05211C;border-color:var(--brand);}

/* ---------- 保障条 ---------- */
.guarantee{
  background:var(--bg-0);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:44px 0;
}
.guarantee-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.guarantee-item{display:flex;gap:14px;padding:0 28px;border-left:1px solid var(--line);}
.guarantee-item:first-child{border-left:none;padding-left:0;}
.guarantee-item:last-child{padding-right:0;}
.guarantee-item svg{flex:0 0 28px;margin-top:2px;}
.guarantee-item h3{font-size:14px;font-weight:600;letter-spacing:.02em;margin-bottom:6px;}
.guarantee-item p{font-size:12px;line-height:1.6;color:var(--text-3);}

/* ---------- 评价 ---------- */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.review-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;display:flex;flex-direction:column;gap:16px;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.review-card:hover{border-color:rgba(31,227,194,.28);box-shadow:0 0 24px rgba(31,227,194,.12);}
.review-head{display:flex;align-items:center;gap:14px;}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 40px;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;color:#05211C;
  background:linear-gradient(135deg,#1FE3C2,#0FB89C);
}
.review-name{font-size:13px;font-weight:600;color:var(--text-1);line-height:1.4;}
.review-role{font-size:12px;color:var(--text-3);line-height:1.4;}
.stars{display:flex;gap:3px;font-size:12px;color:var(--accent);letter-spacing:.1em;}
.review-text{
  font-size:14px;line-height:1.8;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.dots{display:flex;justify-content:center;gap:8px;margin-top:32px;}
.dot{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.18);transition:background .2s,width .2s;}
.dot.is-active{width:22px;border-radius:999px;background:var(--brand);}

/* ---------- 资讯 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.news-card:hover{
  transform:translateY(-4px);border-color:rgba(31,227,194,.35);
  box-shadow:0 0 24px rgba(31,227,194,.18);
}
.news-media{aspect-ratio:16/9;overflow:hidden;background:#0B1526;}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.news-card:hover .news-media img{transform:scale(1.04);}
.news-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.news-body .badge{align-self:flex-start;}
.news-body h3{
  font-size:17px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  font-size:14px;line-height:1.75;color:var(--text-3);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:12px;color:var(--text-3);
}
.news-meta .textlink{font-size:12px;font-weight:600;}
.empty-state{
  grid-column:1 / -1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;min-height:190px;padding:32px;text-align:center;
  border:1px dashed var(--line-strong);border-radius:var(--radius-card);
  background:var(--surface);
}
.empty-state p{font-size:14px;color:var(--text-2);}

/* ---------- 企业实力 ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.about-media{border-radius:20px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);}
.about-media img{width:100%;height:auto;aspect-ratio:6/5;object-fit:cover;}
.about-copy h2{font-size:32px;line-height:1.3;font-weight:700;letter-spacing:.02em;margin:10px 0 20px;}
.about-copy p{font-size:15px;line-height:1.9;color:var(--text-2);margin-bottom:16px;}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px;}
.stat-card{
  padding:20px;border-radius:14px;background:var(--surface);border:1px solid var(--line);
  transition:border-color .25s ease;
}
.stat-card:hover{border-color:rgba(31,227,194,.3);}
.stat-card strong{
  display:block;font-size:28px;font-weight:700;color:var(--brand);line-height:1.15;
  font-variant-numeric:tabular-nums;
}
.stat-card span{display:block;font-size:13px;line-height:1.6;color:var(--text-3);margin-top:6px;}

/* ---------- FAQ ---------- */
.faq-wrap{
  max-width:920px;margin:0 auto;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);background:var(--surface);
}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:22px 26px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:16px;font-weight:600;letter-spacing:.01em;color:var(--text-1);
  transition:color .2s;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:20px;font-weight:400;color:var(--brand);
  transition:transform .18s ease;line-height:1;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-answer{padding:0 26px 24px;font-size:14px;line-height:1.85;color:var(--text-2);}

/* ---------- 底部转化 ---------- */
.cta-band{padding:0 0 96px;background:var(--bg-0);}
.cta-card{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:40px 48px;border-radius:20px;
  background:linear-gradient(135deg,rgba(31,227,194,.14),rgba(124,140,255,.09));
  border:1px solid rgba(31,227,194,.25);
}
.cta-card h2{font-size:24px;line-height:1.4;font-weight:700;letter-spacing:.02em;}
.cta-card p{font-size:14px;color:var(--text-2);margin-top:8px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:48px;}
.logo--footer{color:var(--text-1);font-size:16px;}
.logo--footer:hover{color:var(--brand);}
.footer-brand p{font-size:13px;line-height:2;color:var(--text-3);margin-top:18px;max-width:320px;}
.footer-title{font-size:14px;font-weight:600;letter-spacing:.02em;color:var(--text-1);margin-bottom:16px;}
.footer-links li{line-height:2;}
.footer-links a{font-size:13px;color:var(--text-3);transition:color .2s;}
.footer-links a:hover{color:#FFFFFF;}
.footer-contact li{
  font-size:13px;line-height:2;color:var(--text-3);
  display:flex;align-items:flex-start;gap:8px;
}
.footer-contact svg{flex:0 0 14px;margin-top:6px;}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:12px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  .nav-inner{height:60px;}
  .nav-links,.nav-search,.nav-right .btn-nav{display:none;}
  .nav-toggle{display:flex;}
  .mobile-drawer{top:60px;}
  .section{padding:56px 0;}
  .hero{padding:56px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero h1{font-size:38px;}
  .hero-sub{font-size:16px;max-width:100%;}
  .hero-chip{right:12px;bottom:-16px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px;}
  .section-head h2{font-size:24px;}
  .cat-grid{grid-template-columns:repeat(2,1fr);gap:16px;}
  .prod-grid{grid-template-columns:repeat(2,1fr);gap:16px;}
  .guarantee-grid{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .guarantee-item{padding:0 20px;}
  .guarantee-item:nth-child(odd){border-left:none;padding-left:0;}
  .review-grid{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:10px;-webkit-overflow-scrolling:touch;}
  .review-card{flex:0 0 76%;scroll-snap-align:start;}
  .news-grid{grid-template-columns:repeat(2,1fr);gap:16px;}
  .about-grid{grid-template-columns:1fr;gap:36px;}
  .about-copy h2{font-size:24px;}
  .cta-card{flex-direction:column;align-items:flex-start;padding:32px 28px;}
  .cta-band{padding:0 0 56px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media screen and (max-width:640px){
  .container{padding:0 16px;}
  .nav-inner{padding:0 16px;}
  .logo{font-size:15px;}
  .hero h1{font-size:30px;line-height:1.3;}
  .hero-eyebrow{font-size:11px;padding:6px 12px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .hero-trust{gap:16px;}
  .cat-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
  .cat-card{padding:20px 16px;}
  .prod-grid{grid-template-columns:1fr;gap:16px;}
  .news-grid{grid-template-columns:1fr;gap:16px;}
  .review-card{flex:0 0 88%;}
  .guarantee-grid{grid-template-columns:1fr;gap:24px;}
  .guarantee-item{border-left:none;padding:0;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:12px;}
  .stat-card{padding:16px;}
  .stat-card strong{font-size:24px;}
  .faq-item summary{padding:18px 18px;font-size:15px;}
  .faq-answer{padding:0 18px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .cta-card h2{font-size:20px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .btn-mini{height:36px;}
}

/* roulang page: article */
:root{
  --bg-0:#05090F;
  --bg-1:#0A1220;
  --bg-2:#0F1B2D;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --text-1:#EAF2FF;
  --text-2:#A9B7CC;
  --text-3:#6C7C93;
  --brand:#1FE3C2;
  --brand-deep:#0C8F79;
  --accent:#FF7A3D;
  --violet:#7C8CFF;
  --radius:16px;
  --radius-sm:12px;
  --radius-xs:10px;
  --shadow-card:0 12px 32px rgba(0,0,0,.45);
  --shadow-soft:0 8px 24px rgba(0,0,0,.28);
  --container:1200px;
  --space:96px;
  --space-sm:56px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  font-family:'Noto Sans SC','Source Han Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--text-1);
  background:var(--bg-0);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
body.menu-open{overflow:hidden}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none}
a:hover,a:focus{text-decoration:none}
button{font-family:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.02em;color:#fff}
p{margin:0}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
}
.site-header a:focus-visible,.site-header button:focus-visible,.site-header input:focus-visible{
  outline-color:var(--brand-deep);
}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:#fff;
  border-bottom:1px solid #E6ECF4;
  box-shadow:0 2px 12px rgba(11,18,32,.06);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:16px;
  font-weight:700;
  color:#0B1220;
  white-space:nowrap;
  letter-spacing:.02em;
}
.logo svg{flex:none}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:14px;
  font-weight:500;
  color:#33415A;
  line-height:1.4;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--brand-deep);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand-deep)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-deep)}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}
.search-box{
  display:flex;
  align-items:center;
  gap:8px;
  width:220px;
  height:40px;
  padding:0 14px;
  background:#F2F5F9;
  border:1px solid transparent;
  border-radius:999px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.search-box:focus-within{
  background:#fff;
  border-color:var(--brand-deep);
  box-shadow:0 0 0 3px rgba(12,143,121,.14);
}
.search-box svg{flex:none}
.search-box input{
  width:100%;
  height:100%;
  border:0;
  background:transparent;
  font-size:13px;
  color:#0B1220;
  outline:none;
}
.search-box input::placeholder{color:#8A98AD}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border:1px solid transparent;
  border-radius:var(--radius-sm);
  font-size:14px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease,filter .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,#1FE3C2,#0FB89C);
  color:#05211C;
  font-weight:700;
  box-shadow:0 8px 24px rgba(31,227,194,.28);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 12px 32px rgba(31,227,194,.4)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 18px rgba(31,227,194,.24)}
.btn-outline{
  background:transparent;
  border-color:rgba(255,255,255,.18);
  color:var(--text-1);
}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(0)}
.btn-nav{
  background:var(--brand-deep);
  color:#fff;
  font-weight:600;
  box-shadow:none;
}
.btn-nav:hover{background:#0FA98F;color:#fff;transform:translateY(-1px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:13px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  font-weight:600;
  color:var(--brand);
}
.link-more::after{content:"›";transition:transform .2s ease}
.link-more:hover::after{transform:translateX(3px)}

/* ---------- Mobile drawer ---------- */
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  background:#F2F5F9;
  border:1px solid #E6ECF4;
  border-radius:12px;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:#0B1220;
  border-radius:2px;
  position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:#0B1220;
  border-radius:2px;
  transition:transform .2s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.drawer{
  position:fixed;
  top:68px;left:0;right:0;bottom:0;
  z-index:70;
  display:none;
  padding:12px 24px 40px;
  background:#fff;
  overflow-y:auto;
  border-top:1px solid #EEF2F8;
}
.drawer.is-open{display:block}
.drawer-link{
  display:flex;
  align-items:center;
  min-height:52px;
  font-size:16px;
  font-weight:500;
  color:#33415A;
  border-bottom:1px solid #EEF2F8;
}
.drawer-link.is-active{color:var(--brand-deep);font-weight:700}
.drawer-search{
  display:flex;
  align-items:center;
  height:44px;
  margin:20px 0 14px;
  padding:0 16px;
  background:#F2F5F9;
  border-radius:999px;
}
.drawer-search input{
  width:100%;
  height:100%;
  border:0;
  background:transparent;
  font-size:14px;
  color:#0B1220;
  outline:none;
}

/* ---------- Page frame ---------- */
.page-main{background:var(--bg-0);padding-bottom:var(--space)}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:26px 0 0;
  font-size:13px;
  color:var(--text-3);
}
.breadcrumb a{color:var(--text-2);transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--text-3);opacity:.7}
.breadcrumb .current{
  max-width:100%;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  color:var(--text-3);
}
.article-head{padding:22px 0 32px;border-bottom:1px solid var(--line)}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 13px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
  line-height:1.4;
}
.badge-violet{
  background:rgba(124,140,255,.14);
  border:1px solid rgba(124,140,255,.3);
  color:#AEB8FF;
}
.badge-brand{
  background:rgba(31,227,194,.12);
  border:1px solid rgba(31,227,194,.28);
  color:var(--brand);
}
.article-title{
  max-width:900px;
  margin:16px 0 18px;
  font-size:34px;
  line-height:1.35;
  font-weight:700;
  color:#fff;
  overflow-wrap:break-word;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--text-3);
}
.article-meta .dot{
  width:4px;height:4px;border-radius:50%;
  background:var(--text-3);opacity:.6;
}
.article-meta time{color:var(--text-2)}

/* ---------- Layout ---------- */
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:48px;
  padding:44px 0 0;
  align-items:start;
}
.article-main{min-width:0;max-width:800px}

/* ---------- Article body ---------- */
.article-body{
  font-size:16px;
  line-height:1.9;
  color:var(--text-2);
  overflow-wrap:break-word;
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 20px;font-size:16px;line-height:1.9}
.article-body h2{
  position:relative;
  margin:48px 0 18px;
  padding-left:12px;
  font-size:22px;
  line-height:1.5;
  color:#fff;
  border-left:3px solid var(--brand);
}
.article-body h3{margin:34px 0 14px;font-size:18px;font-weight:600;line-height:1.55;color:#fff}
.article-body h4{margin:26px 0 12px;font-size:16px;font-weight:600;color:#fff}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:#7CF2DE}
.article-body strong{color:#fff;font-weight:700}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:1.4em}
.article-body ul{list-style:none;padding-left:1.2em}
.article-body ul > li{position:relative;margin:0 0 10px;padding-left:16px}
.article-body ul > li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--brand);
}
.article-body ol > li{margin:0 0 10px;padding-left:4px}
.article-body ol > li::marker{color:var(--brand);font-weight:700}
.article-body blockquote{
  margin:28px 0;
  padding:18px 22px;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border-left:3px solid var(--brand);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body figure{margin:28px 0}
.article-body figure img{width:100%;border-radius:var(--radius-sm)}
.article-body figcaption{margin-top:10px;font-size:13px;color:var(--text-3);text-align:center}
.article-body img{border-radius:var(--radius-sm);margin:0 auto}
.article-body table{
  width:100%;
  display:block;
  overflow-x:auto;
  margin:26px 0;
  border-collapse:collapse;
  font-size:14px;
}
.article-body table thead th{
  padding:12px 14px;
  font-size:13px;
  font-weight:600;
  color:var(--brand);
  text-align:left;
  white-space:nowrap;
  border-bottom:1px solid var(--line-strong);
  background:rgba(255,255,255,.04);
}
.article-body table tbody td{
  padding:12px 14px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.article-body table tbody tr:nth-child(even) td{background:rgba(255,255,255,.025)}
.article-body table tbody tr:hover td{background:rgba(31,227,194,.06)}
.article-body hr{margin:36px 0;border:0;border-top:1px solid var(--line)}

/* ---------- Empty state ---------- */
.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:12px;
  padding:48px 24px;
  text-align:center;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--radius);
}
.empty-state svg{opacity:.85}
.empty-state p{font-size:14px;color:var(--text-2);margin:0}

/* ---------- Tags / post nav / related ---------- */
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px}
.tag{
  display:inline-flex;
  align-items:center;
  min-height:32px;
  padding:0 14px;
  border:1px solid var(--line-strong);
  border-radius:999px;
  font-size:12px;
  color:var(--text-2);
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.tag:hover{border-color:rgba(31,227,194,.45);color:var(--brand);transform:translateY(-1px)}

.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px}
.post-nav-card{
  display:flex;
  align-items:center;
  gap:12px;
  padding:16px 20px;
  min-height:72px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  border-radius:14px;
  transition:border-color .2s ease,transform .2s ease,background .2s ease;
}
.post-nav-card:hover{
  border-color:rgba(31,227,194,.35);
  background:rgba(255,255,255,.055);
  transform:translateY(-2px);
}
.post-nav-card .arrow{font-size:18px;color:var(--brand);line-height:1}
.post-nav-card .pn-label{display:block;font-size:12px;color:var(--text-3);margin-bottom:4px}
.post-nav-card .pn-title{
  display:block;
  font-size:15px;
  font-weight:600;
  color:#fff;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.post-nav-card.is-next{text-align:right;flex-direction:row-reverse}

.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin:0 0 20px;
}
.section-head .eyebrow{
  display:block;
  font-size:12px;
  letter-spacing:.18em;
  color:var(--brand);
  text-transform:uppercase;
  margin-bottom:8px;
}
.section-head h2{font-size:24px;line-height:1.4}
.related{margin-top:56px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.post-card{
  display:block;
  overflow:hidden;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--radius);
  box-shadow:var(--shadow-soft);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.post-card:hover{
  transform:translateY(-4px);
  border-color:rgba(31,227,194,.35);
  box-shadow:0 12px 32px rgba(0,0,0,.45),0 0 24px rgba(31,227,194,.18);
}
.post-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.post-card:hover .thumb img{transform:scale(1.04)}
.post-card .thumb .badge{position:absolute;top:12px;left:12px}
.post-card .body{padding:18px 20px 20px}
.post-card h3{
  font-size:16px;
  font-weight:600;
  line-height:1.55;
  color:#fff;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-card p{
  margin:8px 0 0;
  font-size:13px;
  line-height:1.75;
  color:var(--text-3);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}

/* ---------- Sidebar ---------- */
.article-side{
  position:sticky;
  top:88px;
  display:grid;
  gap:20px;
  min-width:0;
}
.side-card{
  padding:20px;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--radius);
  box-shadow:var(--shadow-soft);
}
.side-title{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:14px;
}
.side-title::before{
  content:"";
  width:3px;height:14px;
  border-radius:2px;
  background:var(--brand);
}
.rank-list{list-style:none;display:grid;gap:12px}
.rank-list li{display:flex;gap:10px;align-items:flex-start}
.rank-list .num{
  flex:none;
  width:20px;
  font-size:13px;
  font-weight:700;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  line-height:1.7;
}
.rank-list a{
  font-size:14px;
  line-height:1.7;
  color:var(--text-2);
  transition:color .2s ease;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rank-list a:hover{color:#fff}
.side-cats{list-style:none;display:grid;gap:8px}
.side-cats a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px;
  min-height:42px;
  padding:0 14px;
  font-size:14px;
  color:var(--text-2);
  border:1px solid var(--line);
  border-radius:var(--radius-xs);
  background:rgba(255,255,255,.02);
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.side-cats a:hover{border-color:rgba(31,227,194,.4);color:var(--brand);background:rgba(31,227,194,.06)}
.side-cats .arrow{color:var(--text-3);font-size:13px}
.side-cats a:hover .arrow{color:var(--brand)}
.side-cta p{font-size:13px;line-height:1.8;color:var(--text-3);margin:0 0 16px}

/* ---------- CTA band ---------- */
.cta-band{padding:0 0 8px;margin-top:var(--space)}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:32px 36px;
  background:linear-gradient(120deg,rgba(31,227,194,.14),rgba(124,140,255,.10) 60%,rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.12);
  border-radius:20px;
  box-shadow:var(--shadow-card);
}
.cta-inner h2{font-size:24px;line-height:1.4;margin-bottom:8px}
.cta-inner p{font-size:14px;line-height:1.8;color:var(--text-2);max-width:640px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:none}

/* ---------- Footer ---------- */
.site-footer{
  background:#05090F;
  border-top:1px solid var(--line);
  padding:64px 0 0;
  color:var(--text-2);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.logo--footer{color:#fff;margin-bottom:14px}
.footer-brand p{font-size:13px;line-height:1.9;color:var(--text-3);max-width:320px}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin:0 0 14px}
.footer-links{list-style:none}
.footer-links li{margin:0}
.footer-links a{font-size:13px;line-height:2;color:var(--text-2);transition:color .2s ease}
.footer-links a:hover{color:#fff}
.footer-contact{list-style:none}
.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:8px;
  font-size:13px;
  line-height:2;
  color:var(--text-2);
}
.footer-contact svg{flex:none;margin-top:8px}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  margin-top:48px;
  padding:18px 0;
  border-top:1px solid var(--line);
  font-size:12px;
  color:var(--text-3);
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  :root{--space:56px;--space-sm:40px}
  .header-inner{height:60px}
  .nav-links,.search-box{display:none}
  .nav-toggle{display:flex}
  .drawer{top:60px}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:40px;padding-top:32px}
  .article-main{max-width:100%}
  .article-side{position:static}
  .article-title{font-size:30px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:28px}
  .cta-actions{width:100%}
}
@media (max-width:768px){
  .article-title{font-size:27px}
  .cta-inner h2{font-size:21px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .article-title{font-size:24px}
  .article-meta{gap:8px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .post-nav{grid-template-columns:minmax(0,1fr)}
  .post-nav-card.is-next{flex-direction:row;text-align:left}
  .footer-grid{grid-template-columns:1fr}
  .cta-actions .btn{width:100%}
  .btn{min-height:46px}
  .article-body h2{font-size:20px;margin-top:38px}
  .article-body h3{font-size:17px}
  .side-card{padding:18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --bg-0:#05090F;
  --bg-1:#0A1220;
  --bg-2:#0F1B2D;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --text-1:#EAF2FF;
  --text-2:#A9B7CC;
  --text-3:#6C7C93;
  --brand:#1FE3C2;
  --brand-deep:#0C8F79;
  --accent:#FF7A3D;
  --violet:#7C8CFF;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:12px;
  --shadow-card:0 12px 32px rgba(0,0,0,.45);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --container:1200px;
  --ease:cubic-bezier(.4,.1,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:'Noto Sans SC','Source Han Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{display:block;max-width:100%;border:0}
a{color:inherit;text-decoration:none}
button{border:0;background:none;cursor:pointer;font:inherit;color:inherit}
input{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0;font-weight:400}
h1,h2,h3,h4{letter-spacing:.02em;line-height:1.3}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%}
.section{padding:96px 0}
.section--alt{background:var(--bg-1)}
.section--deep{background:var(--bg-2)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid #E6ECF4;
  box-shadow:0 2px 12px rgba(11,18,32,.06);
}
.header-inner{
  height:68px;max-width:var(--container);margin:0 auto;padding:0 24px;
  display:flex;align-items:center;gap:24px;
}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-size:16px;font-weight:700;color:#0B1220;white-space:nowrap;flex-shrink:0;
  letter-spacing:.01em;
}
.logo svg{flex-shrink:0}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:8px}
.nav-link{
  position:relative;display:inline-block;padding:22px 0;
  font-size:14px;font-weight:500;color:#33415A;white-space:nowrap;
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  background:var(--brand-deep);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:#0C8F79}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:#0C8F79;font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.header-search{
  display:flex;align-items:center;gap:8px;
  width:220px;height:40px;padding:0 14px;border-radius:999px;
  background:#F2F5F9;border:1px solid transparent;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.header-search:focus-within{border-color:#0C8F79;box-shadow:0 0 0 3px rgba(12,143,121,.14)}
.header-search input{
  width:100%;border:0;background:transparent;outline:none;
  font-size:13px;color:#0B1220;
}
.header-search input::placeholder{color:#8B99AD}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn--primary{
  background:linear-gradient(135deg,#1FE3C2,#0FB89C);
  color:#05211C;box-shadow:0 8px 24px rgba(31,227,194,.28);
}
.btn--primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 12px 32px rgba(31,227,194,.34)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text-1)}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn--sm{min-height:40px;padding:0 18px;font-size:14px}
.btn--block{width:100%}
.header-actions .btn--primary{background:#0C8F79;color:#fff;box-shadow:none}
.header-actions .btn--primary:hover{background:#0FA88E;transform:none;filter:none}

.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  flex-direction:column;gap:5px;border-radius:10px;
}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:#0B1220;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mobile-drawer{
  position:fixed;left:0;right:0;top:68px;bottom:0;z-index:79;
  background:#fff;padding:16px 24px 40px;overflow-y:auto;
}
.mobile-drawer[hidden]{display:none}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  display:flex;align-items:center;height:52px;
  font-size:16px;font-weight:500;color:#33415A;
  border-bottom:1px solid #EDF1F7;
}
.drawer-nav a.is-active{color:#0C8F79;font-weight:700}
.drawer-search{margin:20px 0 16px}
.drawer-search input{
  width:100%;height:44px;padding:0 16px;border-radius:12px;
  border:1px solid #E0E7F0;background:#F7F9FC;color:#0B1220;font-size:14px;outline:none;
}
.drawer-search input:focus{border-color:#0C8F79;box-shadow:0 0 0 3px rgba(12,143,121,.14)}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding:18px 0 0;font-size:13px;color:var(--text-3)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li::after{content:"/";color:rgba(255,255,255,.22)}
.breadcrumb li:last-child::after{display:none}
.breadcrumb a{color:var(--text-3);transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .current{color:var(--text-2);max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,9,15,.94),rgba(5,9,15,.74) 52%,rgba(5,9,15,.97));
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(600px 320px at 18% 20%,rgba(31,227,194,.16),transparent 70%);
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:1}
.hero-grid{
  padding:56px 0 72px;
  display:grid;grid-template-columns:1.35fr .9fr;gap:56px;align-items:center;
}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.18em;
  color:var(--brand);text-transform:uppercase;margin-bottom:16px;
}
.hero-title{font-size:36px;font-weight:700;line-height:1.24;margin-bottom:18px}
.hero-sub{font-size:16px;color:var(--text-2);line-height:1.8;max-width:640px}
.hero-trust{display:flex;flex-wrap:wrap;gap:20px;margin-top:28px}
.hero-trust span{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--text-2)}
.hero-trust svg{flex-shrink:0}
.hero-panel{
  background:var(--glass);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border:1px solid rgba(255,255,255,.10);
  border-radius:20px;
  padding:24px;
  box-shadow:var(--shadow-card);
}
.hero-panel-title{font-size:12px;letter-spacing:.16em;color:var(--text-3);margin-bottom:16px}
.hero-panel-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:12px 0;border-bottom:1px solid var(--line);
}
.hero-panel-row:last-child{border-bottom:0;padding-bottom:0}
.hero-panel-row span{font-size:13px;color:var(--text-2)}
.hero-panel-row strong{font-size:22px;font-weight:700;color:var(--brand);letter-spacing:.01em}

/* ---------- section head ---------- */
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
  margin-bottom:40px;
}
.section-title{font-size:32px;font-weight:700;color:var(--text-1)}
.section-desc{margin-top:10px;font-size:14px;color:var(--text-2);max-width:640px;line-height:1.8}
.link-more{
  display:inline-flex;align-items:center;gap:6px;flex-shrink:0;
  font-size:14px;font-weight:600;color:var(--brand);
  transition:color .18s var(--ease);
}
.link-more svg{transition:transform .18s var(--ease)}
.link-more:hover{color:#63F3DA}
.link-more:hover svg{transform:translateX(3px)}

/* ---------- filter layout ---------- */
.layout-filter{
  display:grid;grid-template-columns:264px 1fr;gap:32px;align-items:start;
}
.filter-panel{
  position:sticky;top:92px;
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 20px;
}
.filter-group + .filter-group{margin-top:26px}
.filter-group-title{
  font-size:12px;letter-spacing:.16em;color:var(--text-3);
  margin-bottom:12px;text-transform:uppercase;
}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 14px;
  border-radius:999px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);color:var(--text-2);
  font-size:13px;line-height:1;white-space:nowrap;
  transition:border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease);
}
.chip:hover{border-color:rgba(31,227,194,.5);color:var(--text-1)}
.chip.is-active{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;font-weight:600}
.filter-note{
  margin-top:24px;padding-top:20px;border-top:1px solid var(--line);
  font-size:12px;color:var(--text-3);line-height:1.8;
}

.product-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.product-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius-card);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.product-card:hover{
  transform:translateY(-4px);
  border-color:rgba(31,227,194,.35);
  box-shadow:0 0 24px rgba(31,227,194,.18),var(--shadow-card);
}
.product-media{
  position:relative;aspect-ratio:3/2;overflow:hidden;background:var(--bg-2);
}
.product-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.product-card:hover .product-media img{transform:scale(1.04)}
.badge{
  position:absolute;top:12px;left:12px;
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;font-size:12px;font-weight:600;line-height:1;
  background:rgba(255,122,61,.16);color:#FF9A63;border:1px solid rgba(255,122,61,.34);
}
.badge--violet{background:rgba(124,140,255,.16);color:#A6B0FF;border-color:rgba(124,140,255,.34)}
.badge--green{background:rgba(31,227,194,.14);color:#5CEDD3;border-color:rgba(31,227,194,.32)}
.product-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.product-title{font-size:18px;font-weight:600;color:var(--text-1);line-height:1.4}
.product-desc{
  font-size:14px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.spec-row{
  display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3);
}
.spec-row span{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:8px;background:rgba(255,255,255,.04);
  border:1px solid var(--line);
}
.spec-row b{color:var(--text-2);font-weight:600}
.product-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.product-price{display:flex;flex-direction:column;line-height:1.3}
.product-price em{font-style:normal;font-size:12px;color:var(--text-3)}
.product-price strong{font-size:20px;font-weight:700;color:var(--accent)}

/* ---------- zigzag ---------- */
.zigzag-item{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  padding:32px;border-radius:20px;border:1px solid var(--line);background:var(--glass);
  margin-bottom:28px;
}
.zigzag-item:last-child{margin-bottom:0}
.zigzag-item.is-reverse .zigzag-media{order:2}
.zigzag-media{border-radius:var(--radius-img);overflow:hidden;aspect-ratio:5/4;background:var(--bg-2)}
.zigzag-media img{width:100%;height:100%;object-fit:cover}
.zigzag-body .tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--brand);
  background:rgba(31,227,194,.10);border:1px solid rgba(31,227,194,.28);
  margin-bottom:14px;
}
.zigzag-body h3{font-size:22px;font-weight:700;margin-bottom:14px}
.zigzag-body p{font-size:14px;color:var(--text-2);line-height:1.85;margin-bottom:10px}
.zigzag-body .link-more{margin-top:8px}

/* ---------- metrics ---------- */
.metric-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric-card{
  padding:24px;border-radius:var(--radius-card);
  border:1px solid var(--line);background:var(--bg-1);
  transition:transform .25s var(--ease),border-color .25s var(--ease);
}
.metric-card:hover{transform:translateY(-4px);border-color:rgba(31,227,194,.35)}
.metric-card strong{
  display:block;font-size:28px;font-weight:700;color:var(--brand);line-height:1.2;
}
.metric-card span{display:block;margin-top:8px;font-size:13px;color:var(--text-2)}
.metric-card small{display:block;margin-top:6px;font-size:12px;color:var(--text-3);line-height:1.7}

/* ---------- process ---------- */
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.process-card{
  padding:24px;border-radius:var(--radius-card);
  border:1px solid var(--line);background:var(--bg-2);
  transition:transform .25s var(--ease),border-color .25s var(--ease);
}
.process-card:hover{transform:translateY(-4px);border-color:rgba(31,227,194,.35)}
.process-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  font-size:20px;font-weight:700;color:var(--brand);
  border:1px solid rgba(31,227,194,.4);background:rgba(31,227,194,.08);
  margin-bottom:16px;
}
.process-card h3{font-size:16px;font-weight:600;margin-bottom:8px}
.process-card p{font-size:13px;color:var(--text-2);line-height:1.8}

/* ---------- faq ---------- */
.faq-wrap{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--glass);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--text-1);
  cursor:pointer;list-style:none;transition:color .18s var(--ease);
  min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary .plus{
  position:relative;flex-shrink:0;width:16px;height:16px;
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";position:absolute;left:0;top:7px;width:16px;height:2px;border-radius:2px;
  background:var(--brand);transition:transform .18s var(--ease),opacity .18s var(--ease);
}
.faq-item summary .plus::after{transform:rotate(90deg)}
.faq-item[open] summary .plus::after{transform:rotate(0);opacity:0}
.faq-item .faq-answer{padding:0 24px 22px;font-size:14px;color:var(--text-2);line-height:1.9}

/* ---------- cta ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  padding:32px 36px;border-radius:20px;
  border:1px solid rgba(255,255,255,.10);
  background:var(--glass);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
}
.cta-band h2{font-size:24px;font-weight:700;margin-bottom:8px}
.cta-band p{font-size:14px;color:var(--text-2)}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-0);border-top:1px solid var(--line);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:48px;
}
.logo--footer{color:var(--text-1);margin-bottom:16px}
.footer-brand p{font-size:13px;color:var(--text-3);line-height:1.9;max-width:340px}
.footer-title{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:16px}
.footer-links li{margin-bottom:2px}
.footer-links a{font-size:13px;color:var(--text-2);line-height:2;transition:color .18s var(--ease)}
.footer-links a:hover{color:#fff}
.footer-contact li{
  display:flex;align-items:flex-start;gap:8px;
  font-size:13px;color:var(--text-2);line-height:1.9;margin-bottom:8px;
}
.footer-contact svg{flex-shrink:0;margin-top:5px}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--text-3);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .header-inner{height:60px}
  .nav-links{display:none}
  .header-search{display:none}
  .header-actions{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .mobile-drawer{top:60px}
  .section{padding:64px 0}
  .hero-grid{grid-template-columns:1fr;gap:32px;padding:40px 0 56px}
  .hero-title{font-size:30px}
  .section-title{font-size:24px}
  .section-head{margin-bottom:28px}
  .layout-filter{grid-template-columns:1fr;gap:20px}
  .filter-panel{
    position:static;display:flex;gap:16px;overflow-x:auto;
    padding:16px;scrollbar-width:thin;
  }
  .filter-group{flex:0 0 auto;min-width:180px}
  .filter-group + .filter-group{margin-top:0}
  .filter-note{display:none}
  .zigzag-item{grid-template-columns:1fr;gap:24px;padding:24px}
  .zigzag-item.is-reverse .zigzag-media{order:0}
  .metric-row{grid-template-columns:repeat(2,1fr)}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .product-grid{grid-template-columns:1fr;gap:16px}
  .section{padding:56px 0}
  .cta-band{padding:24px;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .hero-title{font-size:26px}
  .hero-sub{font-size:15px}
  .metric-row{grid-template-columns:1fr}
  .process-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .product-foot{flex-direction:column;align-items:stretch}
  .product-foot .btn{width:100%}
  .breadcrumb .current{max-width:52vw}
  .faq-item summary{font-size:15px;padding:16px 18px}
  .faq-item .faq-answer{padding:0 18px 18px}
}

/* roulang page: category2 */
:root{
    --bg-0:#05090F;
    --bg-1:#0A1220;
    --bg-2:#0F1B2D;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.14);
    --text-1:#EAF2FF;
    --text-2:#A9B7CC;
    --text-3:#6C7C93;
    --brand:#1FE3C2;
    --brand-deep:#0C8F79;
    --accent:#FF7A3D;
    --violet:#7C8CFF;
    --radius-card:16px;
    --radius-img:12px;
    --radius-btn:12px;
    --shadow-card:0 12px 32px rgba(0,0,0,.45);
    --shadow-glow:0 0 24px rgba(31,227,194,.18);
    --container:1200px;
    --font-cn:'Noto Sans SC','Source Han Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.75;
    color:var(--text-2);
    background:var(--bg-0);
    -webkit-font-smoothing:antialiased;
    -moz-osx-font-smoothing:grayscale;
  }
  h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;color:var(--text-1);letter-spacing:.02em;line-height:1.3;}
  p{margin:0 0 16px;}
  p:last-child{margin-bottom:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  li{margin:0;}
  img{max-width:100%;display:block;border:0;}
  a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
  a:hover{color:#5BF2D8;}
  button{font-family:inherit;}
  input,textarea,select{font-family:inherit;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:80;
    background:#FFFFFF;
    border-bottom:1px solid #E6ECF4;
    box-shadow:0 2px 12px rgba(11,18,32,.06);
  }
  .header-inner{
    display:flex;
    align-items:center;
    gap:28px;
    height:68px;
  }
  .logo{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-size:16px;
    font-weight:700;
    color:#0B1220;
    text-decoration:none;
    white-space:nowrap;
    letter-spacing:.01em;
  }
  .logo svg{flex:0 0 auto;}
  .logo:hover{color:#0C8F79;}
  .nav-links{
    display:flex;
    align-items:center;
    gap:28px;
    margin-left:4px;
  }
  .nav-link{
    position:relative;
    font-size:14px;
    font-weight:500;
    color:#33415A;
    padding:8px 0;
    line-height:1;
    text-decoration:none;
    white-space:nowrap;
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:0;
    right:0;
    bottom:-2px;
    height:2px;
    border-radius:2px;
    background:var(--brand-deep);
    opacity:0;
    transition:opacity .2s ease;
  }
  .nav-link:hover{color:#0B1220;}
  .nav-link:hover::after{opacity:1;}
  .nav-link.is-active{color:#0C8F79;}
  .nav-link.is-active::after{opacity:1;background:#0C8F79;}
  .header-actions{
    margin-left:auto;
    display:flex;
    align-items:center;
    gap:14px;
  }
  .nav-search{
    display:flex;
    align-items:center;
    gap:8px;
    width:220px;
    height:40px;
    padding:0 14px;
    background:#F2F5F9;
    border:1px solid transparent;
    border-radius:999px;
    transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
  }
  .nav-search:focus-within{
    background:#FFFFFF;
    border-color:#0C8F79;
    box-shadow:0 0 0 3px rgba(12,143,121,.15);
  }
  .nav-search svg{flex:0 0 auto;}
  .nav-search input{
    width:100%;
    border:0;
    background:transparent;
    font-size:13px;
    color:#0B1220;
    outline:none;
    padding:0;
    height:auto;
    margin:0;
  }
  .nav-search input::placeholder{color:#8494AC;}
  .nav-toggle{
    display:none;
    align-items:center;
    justify-content:center;
    width:44px;
    height:44px;
    padding:0;
    border:1px solid #E6ECF4;
    border-radius:12px;
    background:#FFFFFF;
    cursor:pointer;
    color:#0B1220;
  }
  .nav-toggle:hover{border-color:#0C8F79;color:#0C8F79;}

  .mobile-drawer{
    position:fixed;
    top:68px;
    left:0;
    right:0;
    bottom:0;
    z-index:70;
    display:none;
    padding:8px 24px 40px;
    background:#FFFFFF;
    border-top:1px solid #E6ECF4;
    overflow-y:auto;
  }
  .mobile-drawer.is-open{display:block;}
  .drawer-link{
    display:flex;
    align-items:center;
    height:52px;
    font-size:16px;
    font-weight:500;
    color:#0B1220;
    text-decoration:none;
    border-bottom:1px solid #EDF1F7;
  }
  .drawer-link.is-active{color:#0C8F79;}
  .drawer-foot{display:grid;gap:12px;margin-top:22px;}
  .drawer-foot .nav-search{width:100%;height:44px;}
  .drawer-foot .btn{width:100%;}
  body.drawer-open{overflow:hidden;}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:44px;
    padding:0 22px;
    border:0;
    border-radius:var(--radius-btn);
    font-size:15px;
    font-weight:600;
    line-height:1;
    text-decoration:none;
    cursor:pointer;
    transition:transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease, border-color .2s ease, filter .2s ease;
  }
  .btn--sm{min-height:40px;padding:0 18px;font-size:14px;}
  .btn--primary{
    background:linear-gradient(135deg,#1FE3C2,#0FB89C);
    color:#05211C;
    box-shadow:0 8px 24px rgba(31,227,194,.28);
  }
  .btn--primary:hover{
    color:#05211C;
    transform:translateY(-2px);
    filter:brightness(1.06);
    box-shadow:0 12px 32px rgba(31,227,194,.34);
  }
  .btn--primary:active{transform:translateY(0);box-shadow:0 6px 18px rgba(31,227,194,.24);}
  .btn--ghost{
    background:transparent;
    border:1px solid rgba(255,255,255,.18);
    color:var(--text-1);
  }
  .btn--ghost:hover{
    border-color:rgba(31,227,194,.6);
    color:var(--brand);
    transform:translateY(-2px);
  }
  .btn--ghost:active{transform:translateY(0);}
  .btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}

  .link-arrow{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:14px;
    font-weight:600;
    color:var(--brand);
  }
  .link-arrow::after{
    content:"→";
    transition:transform .2s ease;
  }
  .link-arrow:hover::after{transform:translateX(3px);}

  /* ---------- breadcrumb ---------- */
  .breadcrumb{
    background:var(--bg-1);
    border-bottom:1px solid var(--line);
  }
  .breadcrumb .container{
    display:flex;
    align-items:center;
    gap:8px;
    height:44px;
    font-size:13px;
    color:var(--text-3);
    overflow:hidden;
    white-space:nowrap;
  }
  .breadcrumb a{color:var(--text-2);}
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .sep{color:rgba(255,255,255,.22);}
  .breadcrumb .current{color:var(--text-3);overflow:hidden;text-overflow:ellipsis;}

  /* ---------- hero ---------- */
  .page-hero{
    position:relative;
    overflow:hidden;
    background:var(--bg-1);
    padding:44px 0 52px;
  }
  .page-hero::before{
    content:"";
    position:absolute;
    inset:0;
    background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    opacity:.30;
  }
  .page-hero::after{
    content:"";
    position:absolute;
    inset:0;
    background:
      radial-gradient(circle at 78% 26%, rgba(31,227,194,.18), transparent 56%),
      linear-gradient(180deg, rgba(5,9,15,.55) 0%, rgba(5,9,15,.96) 100%);
  }
  .page-hero .container{position:relative;z-index:1;}
  .hero-grid{
    display:grid;
    grid-template-columns:1.4fr .6fr;
    gap:40px;
    align-items:center;
  }
  .eyebrow{
    display:inline-block;
    margin-bottom:12px;
    font-size:12px;
    font-weight:600;
    letter-spacing:.18em;
    text-transform:uppercase;
    color:var(--brand);
  }
  .page-hero h1{
    font-size:38px;
    line-height:1.25;
    margin-bottom:14px;
  }
  .hero-sub{
    font-size:16px;
    line-height:1.85;
    color:var(--text-2);
    max-width:640px;
    margin-bottom:22px;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

  .glass{
    background:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
    -webkit-backdrop-filter:blur(16px) saturate(140%);
    backdrop-filter:blur(16px) saturate(140%);
    border:1px solid rgba(255,255,255,.10);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
  }
  .stat-card{padding:20px 22px;}
  .stat-item{
    display:flex;
    align-items:baseline;
    justify-content:space-between;
    gap:12px;
    padding-bottom:12px;
    margin-bottom:12px;
    border-bottom:1px dashed rgba(255,255,255,.10);
  }
  .stat-item:last-child{padding-bottom:0;margin-bottom:0;border-bottom:0;}
  .stat-num{
    font-size:24px;
    font-weight:700;
    color:var(--brand);
    font-variant-numeric:tabular-nums;
    line-height:1.1;
    white-space:nowrap;
  }
  .stat-label{font-size:12px;color:var(--text-2);line-height:1.5;text-align:right;}

  /* ---------- sections ---------- */
  .section{padding:88px 0;}
  .section--alt{background:var(--bg-2);}
  .section--plain{background:var(--bg-1);}
  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:24px;
    margin-bottom:40px;
  }
  .section-head .head-main{max-width:760px;}
  .section-label{
    display:block;
    font-size:12px;
    font-weight:600;
    letter-spacing:.18em;
    text-transform:uppercase;
    color:var(--brand);
    margin-bottom:10px;
  }
  .section-head h2{font-size:32px;line-height:1.3;}
  .section-desc{
    margin-top:10px;
    font-size:14px;
    line-height:1.8;
    color:var(--text-3);
  }

  /* ---------- feature rows ---------- */
  .feature-row{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:48px;
    align-items:center;
    margin-bottom:64px;
  }
  .feature-row:last-child{margin-bottom:0;}
  .feature-row.is-reverse .feature-media{order:2;}
  .feature-media{
    overflow:hidden;
    border-radius:var(--radius-img);
    border:1px solid var(--line);
    background:var(--bg-1);
  }
  .feature-media img{
    width:100%;
    aspect-ratio:5 / 4;
    object-fit:cover;
    transition:transform .3s ease;
  }
  .feature-media:hover img{transform:scale(1.04);}
  .tag{
    display:inline-block;
    padding:4px 12px;
    font-size:12px;
    font-weight:600;
    letter-spacing:.06em;
    color:var(--brand);
    background:rgba(31,227,194,.10);
    border:1px solid rgba(31,227,194,.28);
    border-radius:999px;
    margin-bottom:14px;
  }
  .tag--violet{
    color:#B9C2FF;
    background:rgba(124,140,255,.12);
    border-color:rgba(124,140,255,.32);
  }
  .feature-body h3{font-size:22px;line-height:1.4;margin-bottom:12px;}
  .feature-body p{font-size:15px;line-height:1.85;color:var(--text-2);margin-bottom:12px;}
  .feature-body .link-arrow{margin-top:6px;}

  /* ---------- compare table ---------- */
  .table-scroll{
    overflow-x:auto;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    background:rgba(10,18,32,.72);
    box-shadow:var(--shadow-card);
  }
  table.compare{
    width:100%;
    min-width:720px;
    border-collapse:collapse;
    margin:0;
    background:transparent;
  }
  table.compare th{
    padding:16px 18px;
    font-size:13px;
    font-weight:600;
    color:var(--brand);
    text-align:left;
    white-space:nowrap;
    background:rgba(31,227,194,.06);
    border-bottom:1px solid var(--line);
  }
  table.compare td{
    padding:14px 18px;
    font-size:14px;
    color:var(--text-2);
    border-bottom:1px solid rgba(255,255,255,.06);
    line-height:1.6;
  }
  table.compare td:first-child{
    color:var(--text-1);
    font-weight:600;
    white-space:nowrap;
  }
  table.compare tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
  table.compare tbody tr:hover{background:rgba(31,227,194,.05);}
  table.compare tbody tr:last-child td{border-bottom:0;}
  .table-note{margin-top:14px;font-size:12px;color:var(--text-3);}

  /* ---------- steps ---------- */
  .steps{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:24px;
  }
  .step{
    padding:24px 22px;
    background:var(--bg-1);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    transition:transform .25s ease, border-color .25s ease, box-shadow .25s ease;
  }
  .step:hover{
    transform:translateY(-4px);
    border-color:rgba(31,227,194,.35);
    box-shadow:var(--shadow-glow);
  }
  .step-num{
    font-size:32px;
    font-weight:700;
    line-height:1;
    margin-bottom:14px;
    color:transparent;
    -webkit-text-stroke:1px rgba(31,227,194,.75);
    font-variant-numeric:tabular-nums;
  }
  .step h3{font-size:16px;margin-bottom:8px;}
  .step p{font-size:13px;line-height:1.8;color:var(--text-3);margin:0;}

  /* ---------- scenario list ---------- */
  .scenario-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:0 40px;
  }
  .scenario{
    display:flex;
    gap:14px;
    padding:18px 0;
    border-bottom:1px solid rgba(255,255,255,.06);
  }
  .scenario-icon{
    flex:0 0 34px;
    width:34px;
    height:34px;
    display:grid;
    place-items:center;
    border-radius:10px;
    background:rgba(31,227,194,.10);
    border:1px solid rgba(31,227,194,.22);
    color:var(--brand);
  }
  .scenario h3{font-size:15px;margin-bottom:4px;}
  .scenario p{font-size:13px;line-height:1.75;color:var(--text-3);margin:0;}

  /* ---------- faq ---------- */
  .faq-wrap{max-width:920px;}
  .faq-item{
    margin-bottom:12px;
    border:1px solid var(--line);
    border-radius:14px;
    background:linear-gradient(160deg, rgba(255,255,255,.05), rgba(255,255,255,.015));
    overflow:hidden;
    transition:border-color .25s ease, box-shadow .25s ease;
  }
  .faq-item:hover{border-color:rgba(31,227,194,.28);}
  .faq-item[open]{border-color:rgba(31,227,194,.35);box-shadow:var(--shadow-glow);}
  .faq-item summary{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:18px 20px;
    min-height:44px;
    font-size:16px;
    font-weight:600;
    color:var(--text-1);
    cursor:pointer;
    list-style:none;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"+";
    flex:0 0 auto;
    font-size:20px;
    font-weight:400;
    line-height:1;
    color:var(--brand);
    transition:transform .18s ease;
  }
  .faq-item[open] summary::after{transform:rotate(45deg);}
  .faq-answer{
    padding:0 20px 20px;
    font-size:14px;
    line-height:1.85;
    color:var(--text-2);
  }

  /* ---------- cta band ---------- */
  .cta-band{padding:44px 0 72px;background:var(--bg-1);}
  .cta-card{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:28px;
    padding:30px 36px;
    border-radius:20px;
  }
  .cta-card h2{font-size:24px;line-height:1.35;margin-bottom:6px;}
  .cta-card p{font-size:14px;color:var(--text-3);margin:0;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto;}

  /* ---------- footer ---------- */
  .site-footer{
    background:var(--bg-0);
    border-top:1px solid var(--line);
    padding:64px 0 0;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1.2fr;
    gap:40px;
    padding-bottom:44px;
  }
  .logo--footer span{color:var(--text-1);}
  .logo--footer:hover span{color:var(--brand);}
  .footer-brand p{
    margin-top:14px;
    max-width:320px;
    font-size:13px;
    line-height:1.9;
    color:var(--text-3);
  }
  .footer-title{
    font-size:14px;
    font-weight:600;
    color:var(--text-1);
    margin-bottom:16px;
  }
  .footer-links li a{
    display:inline-block;
    font-size:13px;
    line-height:2;
    color:var(--text-2);
  }
  .footer-links li a:hover{color:#FFFFFF;}
  .footer-contact li{
    display:flex;
    align-items:flex-start;
    gap:8px;
    margin-bottom:10px;
    font-size:13px;
    line-height:1.7;
    color:var(--text-2);
  }
  .footer-contact li svg{flex:0 0 auto;margin-top:4px;}
  .footer-bottom{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    flex-wrap:wrap;
    padding:18px 0 22px;
    border-top:1px solid var(--line);
    font-size:12px;
    color:var(--text-3);
  }
  .footer-bottom a{color:var(--text-3);}
  .footer-bottom a:hover{color:var(--brand);}

  /* ---------- responsive ---------- */
  @media (max-width:1024px){
    .header-inner{height:60px;gap:16px;}
    .nav-links,.nav-search{display:none;}
    .nav-toggle{display:inline-flex;}
    .mobile-drawer{top:60px;}
    .page-hero{padding:36px 0 44px;}
    .page-hero h1{font-size:30px;}
    .hero-grid{grid-template-columns:1fr;gap:24px;}
    .section{padding:56px 0;}
    .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
    .section-head h2{font-size:24px;}
    .feature-row{grid-template-columns:1fr;gap:24px;margin-bottom:44px;}
    .feature-row.is-reverse .feature-media{order:0;}
    .feature-body h3{font-size:19px;}
    .steps{grid-template-columns:1fr 1fr;}
    .scenario-grid{grid-template-columns:1fr;gap:0;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .cta-card{flex-direction:column;align-items:flex-start;}
  }
  @media (max-width:640px){
    .container{padding:0 16px;}
    .page-hero h1{font-size:26px;}
    .hero-sub{font-size:15px;}
    .hero-actions{flex-direction:column;align-items:stretch;}
    .hero-actions .btn{width:100%;}
    .section{padding:56px 0;}
    .steps{grid-template-columns:1fr;}
    .cta-band{padding:32px 0 56px;}
    .cta-card{padding:24px 20px;}
    .cta-actions{width:100%;flex-direction:column;}
    .cta-actions .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }

/* roulang page: category3 */
:root{
  --bg-0:#05090F;
  --bg-1:#0A1220;
  --bg-2:#0F1B2D;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --text-1:#EAF2FF;
  --text-2:#A9B7CC;
  --text-3:#6C7C93;
  --brand:#1FE3C2;
  --brand-deep:#0C8F79;
  --accent:#FF7A3D;
  --violet:#7C8CFF;
  --r-card:16px;
  --r-img:12px;
  --r-btn:12px;
  --shadow-card:0 12px 32px rgba(0,0,0,.45);
  --glow:0 0 24px rgba(31,227,194,.18);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:'Noto Sans SC','Source Han Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.7;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .22s ease;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#FFFFFF;
  border-bottom:1px solid #E6ECF4;
  box-shadow:0 2px 12px rgba(11,18,32,.06);
}
.header-inner{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  height:68px;display:flex;align-items:center;gap:24px;
}
.logo{
  display:inline-flex;align-items:center;gap:8px;
  font-size:16px;font-weight:700;color:#0B1220;white-space:nowrap;
  letter-spacing:.01em;
}
.logo:hover{color:var(--brand-deep);}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:12px;}
.nav-link{
  position:relative;display:inline-block;
  padding:22px 0;font-size:14px;font-weight:500;color:#33415A;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  border-radius:2px;background:transparent;transition:background .22s ease;
}
.nav-link:hover{color:var(--brand-deep);}
.nav-link:hover::after{background:var(--brand-deep);}
.nav-link.is-active{color:var(--brand-deep);font-weight:600;}
.nav-link.is-active::after{background:var(--brand-deep);}
.header-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:220px;height:40px;padding:0 14px;
  background:#F2F5F9;border-radius:999px;border:1px solid transparent;
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.search-box:focus-within{border-color:var(--brand-deep);box-shadow:0 0 6px rgba(12,143,121,.25);background:#fff;}
.search-box input{
  width:100%;height:100%;margin:0;padding:0;border:0;background:transparent;
  font-size:13px;color:#0B1220;outline:none;box-shadow:none;
}
.search-box input::placeholder{color:#8A98AC;}
.search-box svg{flex:none;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:14px;font-weight:700;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,filter .22s ease,box-shadow .22s ease,border-color .22s ease,color .22s ease,background .22s ease;
}
.btn-sm{min-height:40px;padding:0 18px;font-size:13px;}
.btn-primary{
  background:linear-gradient(135deg,#1FE3C2,#0FB89C);
  color:#05211C;
  box-shadow:0 8px 24px rgba(31,227,194,.28);
}
.btn-primary:hover{
  transform:translateY(-2px);filter:brightness(1.06);
  box-shadow:0 12px 32px rgba(31,227,194,.38);color:#05211C;
}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;border-color:rgba(255,255,255,.18);color:var(--text-1);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);}
.btn-deep{
  background:var(--brand-deep);color:#fff;
  box-shadow:0 6px 18px rgba(12,143,121,.24);
}
.btn-deep:hover{background:#0FA88E;color:#fff;transform:translateY(-1px);}
.btn:disabled,.btn[disabled]{opacity:.45;box-shadow:none;pointer-events:none;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);white-space:nowrap;
}
.link-more svg{transition:transform .22s ease;}
.link-more:hover svg{transform:translateX(4px);}
.nav-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;align-items:center;justify-content:center;
  background:#F2F5F9;border:1px solid #E6ECF4;border-radius:12px;cursor:pointer;
}
.mobile-drawer{
  display:none;position:fixed;left:0;right:0;top:60px;bottom:0;
  background:#fff;z-index:59;padding:12px 24px 40px;overflow-y:auto;
  border-top:1px solid #E6ECF4;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;font-size:16px;color:#33415A;
  border-bottom:1px solid #EDF1F7;
}
.mobile-drawer .drawer-link.is-active{color:var(--brand-deep);font-weight:600;}
.mobile-drawer .drawer-actions{margin-top:24px;display:grid;gap:12px;}
.mobile-drawer .search-box{width:100%;height:44px;}

/* ---------- 面包屑与首屏 ---------- */
.cat-hero{
  position:relative;overflow:hidden;min-height:260px;
  display:flex;align-items:center;background:var(--bg-1);
}
.cat-hero__bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity:.38;
}
.cat-hero__mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,9,15,.92) 0%,rgba(5,9,15,.78) 60%,rgba(5,9,15,.94) 100%);
}
.cat-hero .container{position:relative;z-index:2;padding-top:30px;padding-bottom:34px;}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--text-3);margin-bottom:14px;}
.crumb a{color:rgba(234,242,255,.72);}
.crumb a:hover{color:var(--brand);}
.crumb span.sep{color:rgba(255,255,255,.24);}
.crumb .current{color:var(--brand);}
.cat-hero h1{
  font-size:36px;line-height:1.24;font-weight:700;letter-spacing:.02em;
  margin:0 0 12px;
}
.cat-hero p{
  font-size:16px;line-height:1.7;color:var(--text-2);max-width:760px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  height:30px;padding:0 14px;border-radius:999px;
  font-size:12px;color:var(--text-2);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-strong);
}
.tag-pill i{width:6px;height:6px;border-radius:50%;background:var(--brand);display:block;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section--alt{background:var(--bg-1);}
.section--deep{background:var(--bg-2);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:40px;
}
.eyebrow{
  display:block;font-size:12px;font-weight:600;letter-spacing:.18em;
  text-transform:uppercase;color:var(--brand);margin-bottom:10px;
}
.section-head h2{font-size:32px;line-height:1.25;font-weight:700;letter-spacing:.02em;}
.section-head .sub{font-size:14px;color:var(--text-3);margin-top:10px;line-height:1.7;}
.badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge--brand{background:rgba(31,227,194,.12);color:var(--brand);border:1px solid rgba(31,227,194,.3);}
.badge--violet{background:rgba(124,140,255,.12);color:#AEB8FF;border:1px solid rgba(124,140,255,.3);}
.badge--accent{background:rgba(255,122,61,.12);color:var(--accent);border:1px solid rgba(255,122,61,.32);}
.meta-row{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);flex-wrap:wrap;}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);display:block;}
.card{
  display:block;background:var(--bg-2);
  border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;color:inherit;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.card:hover{
  transform:translateY(-4px);
  border-color:rgba(31,227,194,.35);
  box-shadow:var(--shadow-card),var(--glow);
}
.card:hover .thumb img{transform:scale(1.04);}
.thumb{position:relative;overflow:hidden;background:#0B1626;}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.thumb--16x9{aspect-ratio:16/9;}
.thumb--16x11{aspect-ratio:16/11;}
.thumb--1x1{aspect-ratio:1/1;}

/* ---------- 杂志式头条 ---------- */
.headline{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch;}
.headline-main{padding:0;}
.headline-main .card-body{padding:24px 26px 26px;}
.headline-title{
  font-size:24px;line-height:1.4;font-weight:700;margin:12px 0 10px;color:var(--text-1);
}
.headline-desc{
  font-size:14px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:16px;
}
.headline-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.mini-card{display:flex;align-items:stretch;}
.mini-card .thumb{width:150px;flex:none;}
.mini-card .mini-body{padding:18px 20px;display:flex;flex-direction:column;gap:10px;justify-content:center;}
.mini-card h3{
  font-size:16px;line-height:1.5;font-weight:600;color:var(--text-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}

/* ---------- 列表流 ---------- */
.feed{display:flex;flex-direction:column;}
.feed-item{border-bottom:1px solid var(--line);}
.feed-item:first-child{border-top:1px solid var(--line);}
.feed-link{
  display:flex;align-items:center;gap:24px;
  padding:24px 8px;color:inherit;border-radius:12px;
  transition:background .24s ease,padding .24s ease;
}
.feed-link:hover{background:rgba(255,255,255,.035);}
.feed-thumb{
  width:160px;height:110px;flex:none;border-radius:var(--r-img);
  overflow:hidden;background:#0B1626;
}
.feed-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.feed-link:hover .feed-thumb img{transform:scale(1.04);}
.feed-body{flex:1;min-width:0;}
.feed-body h3{
  font-size:17px;line-height:1.5;font-weight:600;color:var(--text-1);
  margin-bottom:8px;
}
.feed-link:hover .feed-body h3{color:var(--brand);}
.feed-body p{
  font-size:14px;line-height:1.7;color:var(--text-3);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  margin-bottom:10px;max-width:760px;
}
.feed-foot{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}

/* ---------- 场景卡片 ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.scene-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.scene-card:hover{
  transform:translateY(-4px);
  border-color:rgba(31,227,194,.35);
  box-shadow:var(--shadow-card),var(--glow);
}
.scene-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(31,227,194,.1);border:1px solid rgba(31,227,194,.24);margin-bottom:18px;
}
.scene-card h3{font-size:16px;font-weight:600;margin-bottom:8px;color:var(--text-1);}
.scene-card p{font-size:13px;line-height:1.75;color:var(--text-3);}

/* ---------- 流程步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{
  position:relative;padding:26px 24px 28px;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  border:1px solid rgba(255,255,255,.1);border-radius:var(--r-card);
}
.step-num{
  font-size:32px;font-weight:700;line-height:1;color:rgba(31,227,194,.95);
  font-variant-numeric:tabular-nums;margin-bottom:16px;letter-spacing:.02em;
}
.step h3{font-size:16px;font-weight:600;margin-bottom:10px;color:var(--text-1);}
.step p{font-size:13px;line-height:1.75;color:var(--text-2);}
.step::after{
  content:"";position:absolute;left:24px;right:24px;bottom:0;height:2px;
  background:linear-gradient(90deg,rgba(31,227,194,.55),rgba(31,227,194,0));
  border-radius:2px;
}

/* ---------- 常见问题 ---------- */
.faq-wrap{max-width:920px;}
.faq-item{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  border:1px solid rgba(255,255,255,.1);
  border-radius:14px;margin-bottom:12px;overflow:hidden;
  transition:border-color .24s ease;
}
.faq-item:hover{border-color:rgba(31,227,194,.3);}
.faq-item summary{
  cursor:pointer;list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--text-1);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .chev{
  flex:none;transition:transform .18s ease;color:var(--brand);
}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary .chev{transform:rotate(180deg);}
.faq-body{padding:0 22px 20px;font-size:14px;line-height:1.85;color:var(--text-2);}

/* ---------- 底部转化 ---------- */
.cta-section{padding:0 0 96px;background:var(--bg-1);}
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:36px 40px;border-radius:20px;
  background:linear-gradient(160deg,rgba(31,227,194,.13),rgba(255,255,255,.03));
  border:1px solid rgba(31,227,194,.24);
}
.cta-band h2{font-size:24px;font-weight:700;line-height:1.35;margin-bottom:8px;letter-spacing:.02em;}
.cta-band p{font-size:14px;color:var(--text-2);line-height:1.7;}
.cta-actions{display:flex;gap:12px;flex:none;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:64px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:48px;
}
.logo--footer{color:var(--text-1);font-size:16px;font-weight:700;margin-bottom:16px;}
.logo--footer:hover{color:var(--brand);}
.footer-brand p{font-size:13px;line-height:1.9;color:var(--text-2);max-width:340px;}
.footer-title{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:16px;letter-spacing:.02em;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:13px;line-height:2;color:var(--text-2);}
.footer-links a:hover{color:#fff;}
.footer-contact li{
  display:flex;align-items:flex-start;gap:8px;
  font-size:13px;line-height:1.9;color:var(--text-2);margin-bottom:10px;
}
.footer-contact svg{flex:none;margin-top:5px;}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .header-inner{height:60px;}
  .nav-links,.header-right{display:none;}
  .nav-toggle{display:inline-flex;}
  .section{padding:56px 0;}
  .headline{grid-template-columns:1fr;}
  .headline-side{grid-template-rows:auto auto;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .section-head h2{font-size:26px;}
  .cat-hero h1{font-size:30px;}
  .cta-band{flex-direction:column;align-items:flex-start;gap:20px;padding:28px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;min-width:160px;}
  .cta-section{padding-bottom:56px;}
}
@media (max-width:768px){
  .mini-card .thumb{width:112px;}
  .feed-link{gap:16px;padding:20px 4px;}
  .feed-thumb{width:120px;height:86px;}
  .feed-body p{white-space:normal;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .header-inner{padding:0 16px;}
  .logo span{font-size:15px;}
  .cat-hero h1{font-size:26px;}
  .cat-hero p{font-size:14px;}
  .card-body{padding:18px !important;}
  .headline-title{font-size:20px;}
  .grid-4{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .feed-link{flex-direction:row;align-items:flex-start;}
  .feed-thumb{width:96px;height:72px;}
  .feed-body h3{font-size:15px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .mini-card{flex-direction:column;}
  .mini-card .thumb{width:100%;aspect-ratio:16/9;}
  .cta-band h2{font-size:20px;}
  .faq-item summary{font-size:15px;padding:16px 18px;}
  .faq-body{padding:0 18px 18px;}
}

/* roulang page: category4 */
:root{
  --bg-0:#05090F;
  --bg-1:#0A1220;
  --bg-2:#0F1B2D;
  --line:rgba(255,255,255,.08);
  --text-1:#EAF2FF;
  --text-2:#A9B7CC;
  --text-3:#6C7C93;
  --brand:#1FE3C2;
  --brand-deep:#0C8F79;
  --accent:#FF7A3D;
  --violet:#7C8CFF;
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 12px 32px rgba(0,0,0,.45);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'Noto Sans SC','Source Han Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  background:var(--bg-0);
  color:var(--text-1);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0}
li{list-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:6px;
}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#FFFFFF;
  border-bottom:1px solid #E6ECF4;
  box-shadow:0 2px 12px rgba(11,18,32,.06);
}
.nav-wrap{display:flex;align-items:center;gap:28px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#0B1220;white-space:nowrap}
.logo svg{flex:none}
.logo:hover{color:#0C8F79}
.nav-links{display:flex;align-items:center;gap:28px;margin:0;padding:0;height:100%}
.nav-link{
  display:inline-flex;align-items:center;height:100%;
  font-size:14px;font-weight:500;color:#33415A;
  border-bottom:2px solid transparent;
  transition:color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.nav-link:hover{color:#0C8F79;border-bottom-color:#0C8F79}
.nav-link.is-active{color:#0C8F79;border-bottom-color:#0C8F79}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:220px;height:40px;padding:0 14px;
  background:#F2F5F9;border:1px solid transparent;border-radius:999px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search:focus-within{background:#fff;border-color:#0C8F79;box-shadow:0 0 0 3px rgba(12,143,121,.15)}
.nav-search input{
  flex:1;min-width:0;border:0;background:transparent;color:#0B1220;
  font-size:13px;line-height:40px;height:38px;padding:0;margin:0;box-shadow:none;
}
.nav-search input::placeholder{color:#8494AA}
.nav-search input:focus{outline:none}
.btn-quote{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:40px;padding:0 18px;border-radius:12px;
  background:#0C8F79;color:#fff;font-size:14px;font-weight:600;
  transition:filter .2s ease,transform .2s ease;
}
.btn-quote:hover{filter:brightness(1.08);color:#fff;transform:translateY(-1px)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;margin-left:auto;
  background:#fff;border:1px solid #E6ECF4;border-radius:12px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#0B1220;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#0B1220;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- mobile drawer ---------- */
.mobile-drawer{
  display:none;position:fixed;inset:0;z-index:90;background:#fff;
  padding:20px 24px 32px;overflow-y:auto;
}
.mobile-drawer.is-open{display:block}
.mobile-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid #E6ECF4}
.mobile-close{
  width:44px;height:44px;border:1px solid #E6ECF4;background:#fff;border-radius:12px;
  color:#0B1220;font-size:20px;line-height:1;cursor:pointer;
}
.mobile-nav{padding:8px 0 20px}
.mobile-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;font-size:16px;font-weight:500;color:#33415A;
  border-bottom:1px solid #EEF2F7;
}
.mobile-nav a.is-active{color:#0C8F79;font-weight:700}
.mobile-search{display:flex;gap:10px;margin:12px 0 16px}
.mobile-search input{
  flex:1;min-width:0;height:44px;border:1px solid #E6ECF4;background:#F2F5F9;
  border-radius:12px;padding:0 14px;color:#0B1220;font-size:14px;margin:0;
}
.mobile-search input:focus{outline:none;border-color:#0C8F79;box-shadow:0 0 0 3px rgba(12,143,121,.15)}
.btn-block{width:100%}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;border:1px solid transparent;
  cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,filter .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,#1FE3C2,#0FB89C);color:#05211C;
  box-shadow:0 8px 24px rgba(31,227,194,.28);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 12px 32px rgba(31,227,194,.36);color:#05211C}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 18px rgba(31,227,194,.24)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600}
.link-arrow svg{transition:transform .2s ease}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--bg-0);padding:88px 0 72px;isolation:isolate}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:-2;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.42;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(5,9,15,.82),rgba(5,9,15,.95)),radial-gradient(60% 70% at 78% 10%,rgba(31,227,194,.16),transparent 70%);
}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:rgba(255,255,255,.24)}
.crumbs .current{color:var(--text-2)}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.18em;color:var(--brand);
  text-transform:uppercase;font-weight:600;margin-bottom:16px;
}
.hero-tag::before{content:"";width:22px;height:2px;background:var(--brand);display:block}
.page-hero h1{
  font-size:44px;line-height:1.22;font-weight:700;letter-spacing:.02em;
  max-width:860px;
}
.hero-sub{margin-top:16px;font-size:17px;line-height:1.8;color:var(--text-2);max-width:720px}
.hero-search{
  display:flex;align-items:center;gap:10px;
  max-width:640px;margin-top:32px;padding:6px 6px 6px 16px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:14px;
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.hero-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,227,194,.16)}
.hero-search svg{flex:none}
.hero-search input{
  flex:1;min-width:0;height:48px;border:0;background:transparent;color:var(--text-1);
  font-size:15px;padding:0;margin:0;box-shadow:none;
}
.hero-search input::placeholder{color:#7E8FA6}
.hero-search input:focus{outline:none}
.hero-search .btn{min-height:44px;padding:0 20px;font-size:14px;flex:none}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px;margin-top:36px}
.hero-stat{display:flex;flex-direction:column;gap:2px}
.hero-stat strong{
  font-size:24px;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.hero-stat span{font-size:12px;color:var(--text-3)}

/* ---------- section base ---------- */
.section{padding:88px 0}
.section--alt{background:var(--bg-1)}
.section--deep{background:var(--bg-2)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:40px;flex-wrap:wrap;
}
.section-head .label{
  font-size:12px;letter-spacing:.18em;color:var(--brand);
  font-weight:600;margin-bottom:10px;text-transform:uppercase;
}
.section-head h2{font-size:32px;line-height:1.3;font-weight:700;letter-spacing:.02em}
.section-head .desc{margin-top:10px;font-size:14px;color:var(--text-2);max-width:640px}

/* ---------- service channels ---------- */
.channel-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.channel-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;display:flex;flex-direction:column;gap:12px;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.channel-card:hover{
  transform:translateY(-4px);
  border-color:rgba(31,227,194,.35);
  box-shadow:0 0 24px rgba(31,227,194,.18);
}
.channel-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(31,227,194,.10);border:1px solid rgba(31,227,194,.22);
}
.channel-card h3{font-size:17px;font-weight:600;line-height:1.4}
.channel-card p{font-size:14px;color:var(--text-2);line-height:1.75}
.channel-card .meta{font-size:12px;color:var(--text-3);margin-top:auto;padding-top:6px;border-top:1px solid var(--line)}

/* ---------- support layout ---------- */
.support-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:36px;align-items:start}
.faq-columns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.group-label{
  font-size:12px;letter-spacing:.16em;color:var(--text-3);
  font-weight:600;text-transform:uppercase;margin-bottom:14px;
}
.faq-item{
  background:var(--glass);border:1px solid var(--line);border-radius:14px;
  margin-bottom:12px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(31,227,194,.28)}
.faq-item[open]{border-color:rgba(31,227,194,.35);box-shadow:0 0 20px rgba(31,227,194,.12)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
  gap:14px;padding:16px 18px;font-size:16px;font-weight:600;line-height:1.55;min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:none;color:var(--brand);font-size:18px;font-weight:400;line-height:1.2;
}
.faq-item[open] summary::after{content:"−"}
.faq-body{padding:0 18px 18px;font-size:14px;line-height:1.85;color:var(--text-2)}

/* ---------- sidebar ---------- */
.support-side{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 20px;
}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:6px}
.side-card .side-note{font-size:13px;color:var(--text-3);margin-bottom:16px}
.side-callout{
  display:flex;align-items:baseline;gap:8px;
  font-size:24px;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.side-callout small{font-size:12px;color:var(--text-3);font-weight:400;letter-spacing:0}
.side-list{margin:14px 0 18px;display:flex;flex-direction:column;gap:10px}
.side-list li{display:flex;gap:10px;font-size:13px;color:var(--text-2);line-height:1.6}
.side-list svg{flex:none;margin-top:3px}
.side-card .btn{width:100%}
.doc-list{display:flex;flex-direction:column}
.doc-item{
  display:flex;align-items:center;gap:12px;padding:12px 0;
  border-bottom:1px solid var(--line);
}
.doc-item:last-child{border-bottom:0;padding-bottom:0}
.doc-item:hover .doc-name{color:var(--brand)}
.doc-icon{
  width:34px;height:34px;flex:none;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(124,140,255,.12);border:1px solid rgba(124,140,255,.24);
}
.doc-text{min-width:0}
.doc-name{font-size:14px;font-weight:600;line-height:1.4;transition:color .2s ease}
.doc-size{font-size:12px;color:var(--text-3)}

/* ---------- process ---------- */
.process-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.process-card{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;position:relative;overflow:hidden;
  transition:transform .25s ease,border-color .25s ease;
}
.process-card:hover{transform:translateY(-4px);border-color:rgba(31,227,194,.35)}
.process-num{
  font-size:32px;font-weight:700;color:transparent;
  -webkit-text-stroke:1.4px rgba(31,227,194,.65);
  line-height:1;margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.process-card h3{font-size:16px;font-weight:600;margin-bottom:8px}
.process-card p{font-size:13px;color:var(--text-2);line-height:1.8}

/* ---------- split feature ---------- */
.split{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:48px;align-items:center}
.split-media{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
.split-media img{width:100%;aspect-ratio:5/4;object-fit:cover}
.split-body h2{font-size:32px;line-height:1.3;font-weight:700;margin-bottom:16px}
.split-body p{font-size:15px;line-height:1.9;color:var(--text-2);margin-bottom:12px}
.check-list{margin:20px 0 26px;display:flex;flex-direction:column;gap:12px}
.check-list li{display:flex;gap:10px;font-size:14px;color:var(--text-1);line-height:1.7}
.check-list li svg{flex:none;margin-top:4px}
.check-list li span em{font-style:normal;color:var(--text-3)}

/* ---------- cta bar ---------- */
.cta-bar{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  flex-wrap:wrap;
}
.cta-bar h2{font-size:24px;font-weight:700;line-height:1.4}
.cta-bar p{font-size:13px;color:var(--text-3);margin-top:6px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1.4fr);gap:40px 32px}
.logo--footer{color:var(--text-1);font-size:15px}
.logo--footer:hover{color:var(--brand)}
.footer-brand p{margin-top:14px;font-size:13px;line-height:1.9;color:var(--text-2);max-width:340px}
.footer-title{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:8px}
.footer-links a{font-size:13px;color:var(--text-2);line-height:1.9}
.footer-links a:hover{color:#fff}
.footer-contact{display:flex;flex-direction:column;gap:10px}
.footer-contact li{display:flex;align-items:flex-start;gap:8px;font-size:13px;color:var(--text-2);line-height:1.7}
.footer-contact svg{flex:none;margin-top:4px}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-links,.nav-search,.btn-quote{display:none}
  .nav-toggle{display:flex}
  .nav-wrap{height:60px}
  .page-hero{padding:64px 0 56px}
  .page-hero h1{font-size:32px}
  .hero-sub{font-size:16px}
  .section{padding:64px 0}
  .section-head h2{font-size:26px}
  .channel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .support-layout{grid-template-columns:1fr;gap:28px}
  .support-side{position:static}
  .faq-columns{grid-template-columns:repeat(2,minmax(0,1fr))}
  .process-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:1fr;gap:28px}
  .split-body h2{font-size:26px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .hero-stats{gap:24px}
  .hero-stat strong{font-size:21px}
  .hero-search{flex-wrap:wrap;padding:12px}
  .hero-search svg{display:none}
  .hero-search input{height:44px;width:100%}
  .hero-search .btn{width:100%}
  .faq-columns{grid-template-columns:1fr;gap:0}
  .cta-bar{padding:22px}
  .cta-bar h2{font-size:20px}
}
@media (max-width:640px){
  .page-hero{padding:48px 0 44px}
  .page-hero h1{font-size:28px;line-height:1.3}
  .section{padding:52px 0}
  .channel-grid{grid-template-columns:1fr}
  .process-grid{grid-template-columns:1fr}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .hero-stat strong{font-size:20px}
}