/* roulang page: index */
:root{
  --bg:#0A0E17;
  --surface:#111826;
  --surface-2:#0F1622;
  --glass:rgba(255,255,255,0.045);
  --primary:#2596D1;
  --primary-light:#3FB0E8;
  --glow:rgba(79,195,247,0.35);
  --accent:#B0455F;
  --accent-light:#D4677F;
  --text:#E8EEF6;
  --text-2:#A7B2C2;
  --text-3:#6F7B8C;
  --line:rgba(255,255,255,0.08);
  --line-strong:rgba(79,195,247,0.4);
  --radius-card:16px;
  --radius-glass:18px;
  --radius-img:12px;
  --shadow:0 8px 30px rgba(0,0,0,0.35);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body h1,body h2,body h3,body h4{margin:0;letter-spacing:.02em;line-height:1.35;font-weight:700;}
body p{margin:0;}
body ul,body ol{margin:0;padding:0;list-style:none;}
body a{color:inherit;text-decoration:none;}
body img{display:block;max-width:100%;height:auto;}
body button,body input{font:inherit;color:inherit;}
body summary{list-style:none;}
body summary::-webkit-details-marker{display:none;}
:focus-visible{outline:2px solid var(--primary-light);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;letter-spacing:-.01em;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease,backdrop-filter .28s ease;
}
.site-header.is-stuck{
  background:rgba(10,14,23,0.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;align-items:center;gap:18px;
  min-height:76px;padding-top:10px;padding-bottom:10px;
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:40px;height:40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  font-weight:800;font-size:14px;color:#fff;letter-spacing:.04em;
  box-shadow:0 6px 18px rgba(37,150,209,.35);
  font-family:Inter,system-ui,sans-serif;
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-text strong{font-size:16px;font-weight:800;color:var(--text);letter-spacing:.02em;white-space:nowrap;}
.logo-text small{font-size:11px;color:var(--text-3);letter-spacing:.22em;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 12px;font-size:15px;color:var(--text-2);
  border-radius:8px;transition:color .2s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-light));
  border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
  box-shadow:0 0 10px var(--glow);
}
.nav-link:hover{color:var(--primary-light);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--primary-light);}
.nav-link.active::after{transform:scaleX(1);}
.search-form{
  position:relative;flex:1 1 auto;max-width:520px;margin:0 auto;
}
.search-form .search-icon{
  position:absolute;left:17px;top:50%;transform:translateY(-50%);
  color:var(--text-3);font-size:14px;pointer-events:none;
}
.search-form input{
  width:100%;height:44px;border-radius:999px;
  background:var(--surface-2);border:1px solid var(--line);
  padding:0 56px 0 44px;font-size:14px;color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.search-form input::placeholder{color:var(--text-3);}
.search-form input:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(37,150,209,.18);
  background:#0C1320;
}
.search-form button{
  position:absolute;right:4px;top:50%;transform:translateY(-50%);
  width:36px;height:36px;border-radius:999px;border:none;cursor:pointer;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  color:#fff;font-size:13px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 1px rgba(79,195,247,.4),0 6px 18px rgba(37,150,209,.4);
  transition:filter .2s ease,transform .2s ease;
}
.search-form button:hover{filter:brightness(1.12);transform:translateY(-50%) scale(1.04);}
.search-form button:active{transform:translateY(calc(-50% + 1px)) scale(.98);}
.header-cta{
  display:inline-flex;align-items:center;gap:8px;flex-shrink:0;
  height:42px;padding:0 20px;border-radius:999px;
  border:1px solid var(--line-strong);color:var(--primary-light);
  font-size:14px;font-weight:600;
  transition:background .2s ease,box-shadow .2s ease,transform .2s ease;
}
.header-cta:hover{background:rgba(37,150,209,.12);box-shadow:0 0 18px rgba(37,150,209,.25);transform:translateY(-1px);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface-2);
  color:var(--text);cursor:pointer;font-size:16px;
  align-items:center;justify-content:center;
}
.mobile-panel{display:none;}
.mobile-panel .m-search{position:relative;margin-bottom:14px;}
.mobile-panel .m-search input{
  width:100%;height:46px;border-radius:999px;background:var(--surface-2);
  border:1px solid var(--line);padding:0 52px 0 42px;font-size:14px;
}
.mobile-panel .m-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,150,209,.18);}
.mobile-panel .m-search i{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--text-3);font-size:14px;}
.mobile-panel .m-search button{
  position:absolute;right:4px;top:50%;transform:translateY(-50%);
  width:38px;height:38px;border-radius:999px;border:none;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;cursor:pointer;
}
.mobile-panel a.m-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 4px;border-bottom:1px solid var(--line);
  color:var(--text-2);font-size:15px;
}
.mobile-panel a.m-link:hover,.mobile-panel a.m-link.active{color:var(--primary-light);}

/* ============ 通用区块 ============ */
.section{padding:72px 0;position:relative;}
.section-head{max-width:760px;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.16em;color:var(--primary-light);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--primary);display:block;}
.section-title{font-size:clamp(24px,2.6vw,32px);font-weight:700;color:var(--text);}
.section-sub{margin-top:14px;color:var(--text-2);font-size:16px;line-height:1.9;max-width:720px;}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--primary-light);font-size:14px;font-weight:600;
  transition:color .2s ease;
}
.text-link i{transition:transform .22s ease;}
.text-link:hover{color:#7FCBF0;}
.text-link:hover i{transform:translateX(4px);}
.badge{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:6px;font-size:13px;font-weight:600;
  background:rgba(37,150,209,.12);color:var(--primary-light);
  line-height:1.6;
}
.badge-accent{background:rgba(176,69,95,.14);color:var(--accent-light);}
.card{
  background:var(--glass);border:1px solid var(--line);
  border-radius:var(--radius-card);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.06);
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.card:hover{
  transform:translateY(-4px);
  border-color:rgba(79,195,247,.28);
  box-shadow:0 14px 40px rgba(0,0,0,.42),inset 0 1px 0 rgba(255,255,255,0.08);
}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:50px;padding:0 28px;border-radius:999px;border:none;cursor:pointer;
  font-size:15px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,#2596D1,#3FB0E8);
  box-shadow:0 0 0 1px rgba(79,195,247,.4),0 8px 24px rgba(37,150,209,.35);
  transition:filter .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary:hover{
  filter:brightness(1.1);transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(79,195,247,.6),0 12px 32px rgba(37,150,209,.48);
}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:50px;padding:0 26px;border-radius:999px;cursor:pointer;
  font-size:15px;font-weight:600;color:var(--primary-light);
  background:transparent;border:1px solid var(--line-strong);
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-ghost:hover{background:rgba(37,150,209,.12);transform:translateY(-1px);box-shadow:0 0 20px rgba(37,150,209,.2);}
.btn-ghost:active{transform:translateY(1px);}
.img-frame{
  border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);background:var(--surface);
}
.img-frame img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:64px 0 56px;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(680px 420px at 78% 8%,rgba(37,150,209,.22),transparent 62%),
    radial-gradient(520px 380px at 8% 82%,rgba(176,69,95,.16),transparent 65%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 30%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000 20%,transparent 78%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;max-height:none;}
.hero-brand{
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 14px 6px 8px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  font-size:13px;color:var(--text-2);margin-bottom:22px;
}
.hero-brand i{color:var(--primary-light);font-size:12px;}
.hero-title{
  font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.28;
  letter-spacing:.02em;color:#F4F8FD;
}
.hero-title em{font-style:normal;color:var(--primary-light);}
.hero-sub{
  margin-top:20px;font-size:17px;line-height:1.85;color:var(--text-2);max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:22px;margin-top:28px;}
.hero-badge{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--text-2);}
.hero-badge i{color:var(--primary-light);font-size:13px;}
.hero-visual{position:relative;}
.hero-visual .img-frame{aspect-ratio:4/3;border-radius:var(--radius-glass);box-shadow:var(--shadow);}
.hero-visual .img-frame img{width:100%;height:100%;}
.glass-data{
  position:absolute;left:-24px;top:26px;
  display:flex;gap:22px;padding:18px 22px;border-radius:var(--radius-glass);
  background:rgba(17,24,38,.72);border:1px solid var(--line);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 12px 34px rgba(0,0,0,.42);
}
.glass-data .item{display:flex;flex-direction:column;gap:2px;}
.glass-data .item b{font-size:24px;font-weight:800;color:var(--primary-light);line-height:1.2;font-family:Inter,system-ui,sans-serif;}
.glass-data .item span{font-size:12px;color:var(--text-3);}

/* ============ 痛点区 ============ */
.pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.pain-card{padding:26px 22px;border-radius:var(--radius-glass);}
.pain-card .icon{
  width:42px;height:42px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(176,69,95,.14);color:var(--accent-light);
  font-size:16px;margin-bottom:16px;
}
.pain-card h3{font-size:17px;font-weight:700;color:var(--text);margin-bottom:10px;}
.pain-card p{font-size:14px;line-height:1.85;color:var(--text-2);}

/* ============ 解决方案区 ============ */
.solution-grid{display:grid;grid-template-columns:5fr 6fr;gap:52px;align-items:center;}
.solution-visual .img-frame{aspect-ratio:1/1;border-radius:var(--radius-glass);box-shadow:var(--shadow);}
.solution-list{display:flex;flex-direction:column;}
.solution-item{
  display:grid;grid-template-columns:64px 1fr;gap:20px;
  padding:24px 0;border-top:1px solid var(--line);
}
.solution-item:first-child{border-top:none;padding-top:0;}
.solution-item:last-child{padding-bottom:0;}
.solution-num{
  width:52px;height:52px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(37,150,209,.12);border:1px solid rgba(79,195,247,.22);
  color:var(--primary-light);font-weight:800;font-size:16px;
  font-family:Inter,system-ui,sans-serif;
}
.solution-item h3{font-size:18px;font-weight:700;color:var(--text);margin-bottom:8px;}
.solution-item p{font-size:15px;color:var(--text-2);line-height:1.85;margin-bottom:12px;}

/* ============ 数据带 ============ */
.stats-band{
  position:relative;overflow:hidden;padding:64px 0;
  background:linear-gradient(180deg,#0C1220 0%,#0A0E17 100%);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stats-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.16;
}
.stats-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(600px 360px at 82% 12%,rgba(37,150,209,.22),transparent 66%);
}
.stats-inner{position:relative;z-index:2;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:36px;}
.stat-card{
  padding:26px 22px;border-radius:var(--radius-card);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  transition:transform .22s ease-out,border-color .22s ease-out;
}
.stat-card:hover{transform:translateY(-4px);border-color:rgba(79,195,247,.28);}
.stat-value{font-size:clamp(34px,3.6vw,48px);font-weight:800;color:var(--primary-light);line-height:1.1;font-family:Inter,system-ui,sans-serif;}
.stat-value small{font-size:18px;font-weight:700;margin-left:2px;}
.stat-label{margin-top:10px;font-size:14px;color:var(--text-2);}

/* ============ 最新信息 ============ */
.news-layout{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start;}
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;}
.news-list{display:flex;flex-direction:column;gap:18px;}
.news-card{
  display:grid;grid-template-columns:260px 1fr;gap:22px;
  padding:16px;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.news-card:hover{
  transform:translateY(-4px);
  border-color:rgba(79,195,247,.28);
  box-shadow:0 14px 40px rgba(0,0,0,.42);
}
.news-thumb{
  border-radius:var(--radius-img);overflow:hidden;display:block;
  border:1px solid var(--line);background:var(--surface);
  aspect-ratio:16/10;
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{display:flex;flex-direction:column;min-width:0;padding:4px 6px 4px 0;}
.news-body h3{margin:10px 0 8px;font-size:18px;font-weight:700;line-height:1.5;}
.news-body h3 a{color:var(--text);transition:color .2s ease;}
.news-card:hover .news-body h3 a{color:var(--primary-light);}
.news-summary{
  font-size:14px;line-height:1.85;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:14px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.news-meta i{transition:transform .22s ease;color:var(--primary-light);}
.news-card:hover .news-meta i{transform:translateX(4px);}
.news-aside{position:sticky;top:104px;}
.aside-card{
  padding:24px 22px;border-radius:var(--radius-glass);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.aside-card h3{font-size:16px;font-weight:700;color:var(--text);margin-bottom:18px;}
.timeline{position:relative;padding-left:20px;}
.timeline::before{content:"";position:absolute;left:4px;top:6px;bottom:6px;width:1px;background:var(--line);}
.timeline li{position:relative;padding-bottom:18px;}
.timeline li:last-child{padding-bottom:0;}
.timeline li::before{
  content:"";position:absolute;left:-20px;top:9px;width:9px;height:9px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 0 3px rgba(37,150,209,.18);
}
.timeline a{display:block;font-size:14px;line-height:1.7;color:var(--text-2);transition:color .2s ease;}
.timeline a:hover{color:var(--primary-light);}
.timeline time{display:block;margin-top:4px;font-size:12px;color:var(--text-3);}
.empty-state{
  padding:52px 24px;text-align:center;border-radius:var(--radius-card);
  background:var(--glass);border:1px dashed var(--line);
}
.empty-state i{font-size:26px;color:var(--text-3);margin-bottom:14px;display:block;}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:18px;}

/* ============ 证言 ============ */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.quote-card{padding:28px 26px;border-radius:var(--radius-glass);}
.quote-card:nth-child(2){margin-top:28px;}
.quote-card:nth-child(3){margin-top:14px;}
.quote-card .quote-mark{color:var(--accent-light);font-size:20px;margin-bottom:14px;}
.quote-card blockquote{margin:0;font-size:15px;line-height:1.9;color:var(--text-2);}
.quote-person{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line);}
.quote-avatar{
  width:42px;height:42px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,rgba(37,150,209,.6),rgba(176,69,95,.6));
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;color:#fff;
}
.quote-person b{display:block;font-size:14px;font-weight:700;color:var(--text);}
.quote-person span{display:block;font-size:12px;color:var(--text-3);}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--glass);margin-bottom:12px;overflow:hidden;
  transition:border-color .22s ease;
}
.faq-item:hover{border-color:rgba(79,195,247,.24);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:64px;padding:18px 22px;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary .q-line{display:flex;align-items:center;gap:12px;}
.faq-item summary .q-line::before{
  content:"";width:3px;height:18px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--primary-light));
  flex-shrink:0;
}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(37,150,209,.12);color:var(--primary-light);
  font-size:12px;transition:transform .25s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-item[open] summary{border-bottom:1px solid var(--line);}
.faq-answer{padding:16px 22px 20px;font-size:15px;line-height:1.9;color:var(--text-2);}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;padding:64px 0;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:#0C1220;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;opacity:.2;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(10,14,23,.92),rgba(10,14,23,.72));
}
.cta-inner{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;color:#F4F8FD;}
.cta-inner p{margin-top:12px;font-size:15px;color:var(--text-2);max-width:620px;}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:#080B12;border-top:1px solid var(--line);padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:36px;}
.footer-brand .logo{margin-bottom:18px;}
.footer-brand p{font-size:14px;line-height:1.9;color:var(--text-2);max-width:320px;}
.footer-col h4{font-size:15px;font-weight:700;color:var(--text);margin-bottom:18px;}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul a{font-size:14px;color:var(--text-2);transition:color .2s ease;}
.footer-col ul a:hover{color:var(--primary-light);}
.footer-search{position:relative;margin-top:16px;}
.footer-search input{
  width:100%;height:44px;border-radius:12px;background:var(--surface-2);
  border:1px solid var(--line);padding:0 48px 0 16px;font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-search input::placeholder{color:var(--text-3);}
.footer-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,150,209,.18);}
.footer-search button{
  position:absolute;right:6px;top:6px;width:32px;height:32px;border-radius:8px;
  border:none;cursor:pointer;color:#fff;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  display:flex;align-items:center;justify-content:center;font-size:12px;
}
.footer-contact li{font-size:14px;color:var(--text-2);margin-bottom:12px;display:flex;align-items:center;gap:10px;}
.footer-contact i{color:var(--primary-light);width:16px;text-align:center;}
.footer-bottom{
  margin-top:48px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--text-3);}
.footer-bottom a{color:var(--text-3);transition:color .2s ease;}
.footer-bottom a:hover{color:var(--primary-light);}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .nav-links{gap:2px;}
  .nav-link{padding:10px 8px;font-size:14px;}
}
@media (max-width:1023px){
  .section{padding:56px 0;}
  .hero{padding:48px 0 44px;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-visual{order:-1;}
  .glass-data{left:12px;top:auto;bottom:-18px;padding:14px 18px;gap:18px;}
  .news-layout{grid-template-columns:1fr;}
  .news-aside{position:static;}
  .solution-grid{grid-template-columns:1fr;gap:32px;}
  .solution-visual{order:-1;}
  .solution-visual .img-frame{aspect-ratio:16/9;}
  .pain-grid{grid-template-columns:repeat(2,1fr);}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .quote-grid{grid-template-columns:1fr;}
  .quote-card:nth-child(2),.quote-card:nth-child(3){margin-top:0;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
}
@media (max-width:899px){
  .nav-links,.header-cta{display:none;}
  .search-form{margin:0;}
  .nav-toggle{display:flex;}
  .header-inner{flex-wrap:wrap;gap:12px;}
  .mobile-panel.open{
    display:block;
    flex-basis:100%;
    padding:16px 0 22px;
    border-top:1px solid var(--line);
  }
  .search-form{flex-basis:100%;max-width:none;order:3;}
}
@media (max-width:639px){
  .container{padding:0 20px;}
  .section{padding:48px 0;}
  .hero-badges{gap:14px;}
  .hero-badge{font-size:13px;}
  .hero-actions{width:100%;}
  .hero-actions .btn-primary,.hero-actions .btn-ghost{flex:1 1 auto;}
  .pain-grid{grid-template-columns:1fr;}
  .stats-grid{grid-template-columns:1fr;}
  .news-card{grid-template-columns:1fr;gap:14px;padding:14px;}
  .news-thumb{aspect-ratio:16/9;}
  .news-body{padding:0 4px 6px;}
  .solution-item{grid-template-columns:1fr;gap:12px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --bg:#0A0E17;
  --surface:#111826;
  --surface-2:#0F1622;
  --glass:rgba(255,255,255,0.045);
  --primary:#2596D1;
  --primary-light:#3FB0E8;
  --glow:rgba(79,195,247,0.35);
  --accent:#B0455F;
  --accent-light:#D4677F;
  --text:#E8EEF6;
  --text-2:#A7B2C2;
  --text-3:#6F7B8C;
  --border:rgba(255,255,255,0.08);
  --border-accent:rgba(79,195,247,0.4);
  --radius-card:16px;
  --radius-glass:18px;
  --radius-img:12px;
  --shadow:0 8px 30px rgba(0,0,0,0.35);
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(760px 440px at 84% -10%, rgba(37,150,209,.20), transparent 70%),
    radial-gradient(600px 380px at 4% 8%, rgba(176,69,95,.14), transparent 72%),
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px) 0 0/100% 104px,
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px) 0 0/104px 100%;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--primary-light);outline-offset:2px;border-radius:6px}
body .container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
  position:relative;
  z-index:1;
}
.site-header,.site-main,.site-footer{position:relative;z-index:1}

/* ============ HEADER ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(10,14,23,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--border);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:22px;
  min-height:78px;
}
.logo{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.logo-mark{
  width:44px;height:44px;
  border-radius:13px;
  display:grid;place-items:center;
  font-weight:800;
  font-size:15px;
  letter-spacing:.02em;
  color:#04131C;
  background:linear-gradient(135deg,#2596D1,#3FB0E8);
  box-shadow:0 0 0 1px var(--border-accent),0 8px 22px rgba(37,150,209,.32);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:16px;font-weight:800;letter-spacing:.02em;white-space:nowrap}
.logo-text small{font-size:11.5px;color:var(--text-3);letter-spacing:.16em}
.nav-links{display:flex;align-items:center;gap:20px;flex:0 0 auto}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,#2596D1,#3FB0E8);
  box-shadow:0 0 12px var(--glow);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--primary-light)}
.nav-link.active::after{transform:scaleX(1)}
.nav-search{
  position:relative;
  display:flex;
  align-items:center;
  flex:1 1 auto;
  max-width:520px;
  margin:0 auto;
}
.nav-search .search-icon{
  position:absolute;
  left:17px;
  font-size:14px;
  color:var(--text-3);
  pointer-events:none;
}
.nav-search input{
  width:100%;
  height:44px;
  border-radius:999px;
  padding:0 56px 0 44px;
  background:var(--surface-2);
  border:1px solid var(--border);
  color:var(--text);
  font-size:14.5px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search input:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(37,150,209,.18),0 0 18px rgba(37,150,209,.22);
  background:#101A28;
}
.nav-search button{
  position:absolute;
  right:5px;
  width:34px;height:34px;
  border-radius:50%;
  border:none;
  cursor:pointer;
  display:grid;place-items:center;
  color:#04131C;
  background:linear-gradient(135deg,#2596D1,#3FB0E8);
  box-shadow:0 0 14px rgba(37,150,209,.45);
  transition:filter .2s ease,transform .2s ease;
}
.nav-search button:hover{filter:brightness(1.1);transform:translateY(-1px)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--border);
  background:var(--glass);
  color:var(--text);
  cursor:pointer;
  font-size:16px;
}

/* ============ BREADCRUMB ============ */
.crumb-bar{padding:26px 0 0}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  flex-wrap:wrap;
}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary-light)}
.crumb .sep{color:rgba(255,255,255,.18)}
.crumb .current{
  color:var(--text-3);
  max-width:min(520px,60vw);
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* ============ ARTICLE HEAD ============ */
.article-head{padding:26px 0 34px}
.head-panel{
  position:relative;
  border-radius:var(--radius-glass);
  border:1px solid var(--border);
  background:
    radial-gradient(560px 240px at 88% 0%, rgba(37,150,209,.20), transparent 70%),
    linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
  padding:34px 38px 30px;
  overflow:hidden;
  box-shadow:var(--shadow);
}
.head-panel::after{
  content:"";
  position:absolute;
  inset:auto -120px -160px auto;
  width:320px;height:320px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(176,69,95,.26),transparent 70%);
  pointer-events:none;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--primary-light);
  letter-spacing:.08em;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,#2596D1,#3FB0E8);
}
.article-title{
  font-size:clamp(26px,3.6vw,42px);
  font-weight:800;
  line-height:1.34;
  letter-spacing:.02em;
  max-width:900px;
}
.article-sub{
  margin-top:14px;
  font-size:15px;
  color:var(--text-2);
  max-width:780px;
}
.meta-bar{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:12px 22px;
  margin-top:24px;
  padding-top:20px;
  border-top:1px solid var(--border);
  font-size:13.5px;
  color:var(--text-2);
}
.meta-item{display:inline-flex;align-items:center;gap:8px}
.meta-item i{color:var(--primary);font-size:13px}
.badge{
  display:inline-flex;
  align-items:center;
  gap:7px;
  height:28px;
  padding:0 12px;
  border-radius:6px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.02em;
}
.badge-cat{
  color:var(--accent-light);
  background:rgba(176,69,95,.14);
  border:1px solid rgba(176,69,95,.32);
}
.badge-soft{
  color:var(--primary-light);
  background:rgba(37,150,209,.12);
  border:1px solid rgba(79,195,247,.28);
}

/* ============ ARTICLE SHELL ============ */
.section{padding:56px 0}
.section-tight{padding:36px 0}
.article-shell{
  display:grid;
  grid-template-columns:minmax(0,1fr) 316px;
  gap:52px;
  align-items:start;
}
.article-main{min-width:0}
.article-inner{max-width:800px}
.cover-frame{
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--border);
  margin-bottom:34px;
  background:var(--surface);
}
.cover-frame img{width:100%;aspect-ratio:16/9;object-fit:cover}
.cover-cap{
  font-size:12.5px;
  color:var(--text-3);
  padding:10px 2px 0;
}
.article-body{font-size:16.5px;line-height:1.95;color:#DDE6F1}
.article-body > * + *{margin-top:1.2em}
.article-body h2{
  font-size:24px;
  font-weight:700;
  line-height:1.45;
  margin-top:2em;
  padding-left:14px;
  border-left:3px solid var(--primary);
  letter-spacing:.02em;
}
.article-body h3{
  font-size:19px;
  font-weight:600;
  margin-top:1.7em;
  color:#F0F5FB;
}
.article-body p{color:#CFDAE8}
.article-body a{
  color:var(--primary-light);
  border-bottom:1px solid rgba(79,195,247,.45);
}
.article-body a:hover{border-bottom-color:var(--primary-light)}
.article-body ul,.article-body ol{padding-left:1.4em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-top:.5em;color:#CFDAE8}
.article-body li::marker{color:var(--primary)}
.article-body blockquote{
  border-left:3px solid var(--primary);
  background:rgba(37,150,209,.08);
  border-radius:0 var(--radius-img) var(--radius-img) 0;
  padding:18px 22px;
  color:#DCE7F3;
}
.article-body blockquote p{color:#DCE7F3}
.article-body img{
  border-radius:var(--radius-img);
  margin:1.4em auto;
  border:1px solid var(--border);
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  display:block;
  overflow-x:auto;
  font-size:14.5px;
}
.article-body th,.article-body td{
  border:1px solid var(--border);
  padding:10px 14px;
  text-align:left;
}
.article-body th{background:rgba(255,255,255,.04);color:var(--text)}
.article-body code{
  background:rgba(255,255,255,.07);
  border-radius:6px;
  padding:2px 6px;
  font-size:14px;
}
.article-empty{
  text-align:center;
  padding:64px 24px;
  border:1px dashed var(--border);
  border-radius:var(--radius-card);
  background:var(--glass);
  max-height:260px;
}
.article-empty i{font-size:30px;color:var(--text-3)}
.article-empty p{margin:14px 0 18px;color:var(--text-2);font-size:15px}

/* ============ SIDEBAR ============ */
.aside{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px}
.side-card{
  border-radius:var(--radius-glass);
  border:1px solid var(--border);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow);
  padding:22px 22px 20px;
}
.side-title{
  display:flex;
  align-items:center;
  gap:9px;
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--text);
  margin-bottom:14px;
}
.side-title i{color:var(--primary)}
.side-list{display:flex;flex-direction:column}
.side-list li{padding:11px 0;border-top:1px solid var(--border);font-size:14px;color:var(--text-2);line-height:1.7}
.side-list li:first-child{border-top:none;padding-top:2px}
.side-list a{display:flex;gap:10px;align-items:flex-start;color:var(--text-2)}
.side-list a:hover{color:var(--primary-light)}
.side-list .num{
  flex:0 0 auto;
  width:22px;height:22px;
  border-radius:6px;
  display:grid;place-items:center;
  font-size:11.5px;
  font-weight:700;
  color:var(--primary-light);
  background:rgba(37,150,209,.14);
  margin-top:4px;
}
.side-note{font-size:14px;color:var(--text-2);line-height:1.85}
.side-meta{
  margin-top:14px;
  padding-top:14px;
  border-top:1px solid var(--border);
  font-size:13px;
  color:var(--text-3);
  display:flex;align-items:center;gap:8px;
}

/* ============ TAG ROW ============ */
.tag-row{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  margin-top:40px;
  padding-top:26px;
  border-top:1px solid var(--border);
}
.tag-row .tag-label{font-size:13.5px;color:var(--text-3);margin-right:4px}
.tag{
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 14px;
  border-radius:999px;
  font-size:13px;
  color:var(--text-2);
  border:1px solid var(--border);
  background:var(--glass);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.tag:hover{color:var(--primary-light);border-color:rgba(79,195,247,.4);background:rgba(37,150,209,.1)}

/* ============ PREV / NEXT ============ */
.pn-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
  margin-top:30px;
}
.pn-card{
  display:block;
  border-radius:var(--radius-card);
  border:1px solid var(--border);
  background:var(--glass);
  padding:20px 22px;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.pn-card:hover{transform:translateY(-4px);border-color:rgba(79,195,247,.3);box-shadow:var(--shadow)}
.pn-card span{font-size:12.5px;color:var(--text-3);letter-spacing:.08em}
.pn-card strong{
  display:block;
  margin-top:8px;
  font-size:15.5px;
  font-weight:600;
  line-height:1.6;
  color:var(--text);
}
.pn-card.next{text-align:right}
.pn-card:hover strong{color:var(--primary-light)}
.back-row{margin-top:26px}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14.5px;
  color:var(--primary-light);
}
.link-arrow i{transition:transform .22s ease}
.link-arrow:hover i{transform:translateX(4px)}

/* ============ RELATED ============ */
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:26px;
}
.sec-head h2{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;
  letter-spacing:.02em;
}
.sec-head p{margin-top:8px;font-size:14.5px;color:var(--text-2);max-width:640px}
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.post-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--radius-card);
  border:1px solid var(--border);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
  overflow:hidden;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(79,195,247,.3);box-shadow:var(--shadow)}
.post-thumb{overflow:hidden;background:var(--surface)}
.post-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-body h3{font-size:17px;font-weight:600;line-height:1.55}
.post-body h3 a:hover{color:var(--primary-light)}
.post-body p{font-size:14px;color:var(--text-2);line-height:1.8}
.post-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:auto;
  font-size:13px;
  color:var(--text-3);
}
.post-foot .link-arrow{font-size:13.5px}

/* ============ CTA BAND ============ */
.cta-band{padding:0 0 72px}
.cta-inner{
  position:relative;
  border-radius:var(--radius-glass);
  border:1px solid var(--border-accent);
  background:
    radial-gradient(640px 260px at 12% 0%, rgba(37,150,209,.26), transparent 72%),
    radial-gradient(520px 240px at 92% 100%, rgba(176,69,95,.24), transparent 72%),
    #0D1420;
  padding:44px 46px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
  overflow:hidden;
  box-shadow:var(--shadow);
}
.cta-inner h2{font-size:clamp(22px,2.6vw,28px);font-weight:700;letter-spacing:.02em}
.cta-inner p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:640px}
.cta-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.btn{
  display:inline-flex;
  align-items:center;
  gap:9px;
  height:46px;
  padding:0 24px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,filter .2s ease,color .2s ease;
}
.btn-primary{
  color:#04131C;
  background:linear-gradient(135deg,#2596D1,#3FB0E8);
  box-shadow:0 0 0 1px rgba(79,195,247,.4),0 8px 24px rgba(37,150,209,.35);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(79,195,247,.6),0 12px 30px rgba(37,150,209,.45)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  color:var(--text);
  border-color:rgba(79,195,247,.45);
  background:transparent;
}
.btn-ghost:hover{background:rgba(37,150,209,.12);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}

/* ============ FOOTER ============ */
.site-footer{
  border-top:1px solid var(--border);
  background:linear-gradient(180deg,rgba(17,24,38,.72),rgba(10,14,23,.96));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
  padding:60px 0 42px;
}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.85;max-width:340px}
.footer-col h4{
  font-size:14.5px;
  font-weight:700;
  letter-spacing:.06em;
  margin-bottom:16px;
  color:var(--text);
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--primary-light)}
.footer-contact li{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--text-2);
}
.footer-contact i{color:var(--primary);font-size:13px}
.footer-search{
  position:relative;
  display:flex;
  align-items:center;
  margin-top:18px;
}
.footer-search input{
  width:100%;
  height:44px;
  border-radius:12px;
  padding:0 48px 0 16px;
  background:var(--surface-2);
  border:1px solid var(--border);
  color:var(--text);
  font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-search input::placeholder{color:var(--text-3)}
.footer-search input:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(37,150,209,.16);
}
.footer-search button{
  position:absolute;
  right:5px;
  width:34px;height:34px;
  border-radius:9px;
  border:none;
  cursor:pointer;
  color:#04131C;
  background:linear-gradient(135deg,#2596D1,#3FB0E8);
  transition:filter .2s ease;
}
.footer-search button:hover{filter:brightness(1.1)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0 26px;
  border-top:1px solid var(--border);
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom a{color:var(--text-2)}
.footer-bottom a:hover{color:var(--primary-light)}

/* ============ RESPONSIVE ============ */
@media (max-width:1180px){
  .nav-links{gap:14px}
  .nav-link{font-size:14px}
  .header-inner{gap:16px}
}
@media (max-width:1024px){
  .article-shell{grid-template-columns:1fr;gap:34px}
  .aside{position:static;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 280px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:900px){
  body .container{padding:0 22px}
  .header-inner{flex-wrap:wrap;gap:12px;padding:12px 0}
  .nav-toggle{display:grid;place-items:center;margin-left:auto;order:2}
  .nav-search{order:3;flex:1 1 100%;max-width:none;margin:0}
  .nav-links{
    order:4;
    width:100%;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    display:none;
    padding:8px 0 4px;
    border-top:1px solid var(--border);
    margin-top:4px;
  }
  .nav-links.is-open{display:flex}
  .nav-link{padding:14px 2px;border-bottom:1px solid var(--border);min-height:44px;display:flex;align-items:center}
  .nav-link::after{display:none}
  .nav-link.active{
    color:var(--primary-light);
    background:rgba(37,150,209,.08);
    border-radius:8px;
    padding-left:12px;
  }
  .logo{order:1}
  .head-panel{padding:26px 22px 24px}
  .cta-inner{padding:32px 24px}
  .section{padding:44px 0}
}
@media (max-width:640px){
  body{font-size:15.5px}
  .article-body{font-size:16px}
  .card-grid{grid-template-columns:1fr}
  .pn-grid{grid-template-columns:1fr}
  .pn-card.next{text-align:left}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding:44px 0 32px}
  .sec-head{flex-direction:column;align-items:flex-start}
  .crumb .current{max-width:70vw}
  .cta-band{padding-bottom:52px}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:18px}
}

/* roulang page: category1 */
:root{
  --bg:#0A0E17;
  --surface:#111826;
  --glass:rgba(255,255,255,0.045);
  --primary:#2596D1;
  --primary-light:#3FB0E8;
  --glow:rgba(79,195,247,0.35);
  --accent:#B0455F;
  --accent-light:#D4677F;
  --text:#E8EEF6;
  --text-sub:#A7B2C2;
  --text-muted:#6F7B8C;
  --line:rgba(255,255,255,0.08);
  --line-strong:rgba(79,195,247,0.4);
  --radius-card:16px;
  --radius-glass:18px;
  --radius-img:12px;
  --radius-pill:999px;
  --radius-badge:6px;
  --shadow:0 8px 30px rgba(0,0,0,0.35);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(720px 520px at 88% -10%, rgba(37,150,209,.20), transparent 65%),
    radial-gradient(620px 440px at -8% 24%, rgba(176,69,95,.13), transparent 68%);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--primary-light);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}

/* header */
.site-header{
  position:sticky;top:0;z-index:50;
  border-bottom:1px solid var(--line);
  background:rgba(10,14,23,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background .25s ease, box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(10,14,23,.92);box-shadow:0 12px 32px rgba(0,0,0,.45)}
.header-inner{display:flex;align-items:center;gap:18px;min-height:74px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  display:grid;place-items:center;width:38px;height:38px;border-radius:11px;
  font-size:13px;font-weight:800;letter-spacing:.05em;color:#04121c;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  box-shadow:0 0 0 1px rgba(79,195,247,.4),0 8px 20px rgba(37,150,209,.32);
}
.logo-text{display:flex;flex-direction:column;line-height:1.22}
.logo-text strong{font-size:15.5px;font-weight:700;letter-spacing:.02em}
.logo-text small{font-size:11.5px;color:var(--text-muted);letter-spacing:.16em}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;
  padding:0 12px;font-size:14.5px;color:var(--text-sub);border-radius:10px;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.active{color:var(--primary-light)}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-light));
  box-shadow:0 0 12px var(--glow);
}
.nav-search{position:relative;flex:1 1 auto;max-width:330px;min-width:150px;margin:0 auto}
.nav-search input{
  width:100%;height:42px;padding:0 46px 0 40px;border-radius:var(--radius-pill);
  background:#0F1622;border:1px solid var(--line);color:var(--text);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search input::placeholder{color:var(--text-muted)}
.nav-search input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,150,209,.18);outline:none}
.nav-search .search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:13px}
.nav-search button{
  position:absolute;right:5px;top:50%;transform:translateY(-50%);
  width:32px;height:32px;border:0;border-radius:50%;cursor:pointer;color:#04121c;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  box-shadow:0 0 0 1px rgba(79,195,247,.4),0 6px 16px rgba(37,150,209,.35);
  transition:filter .2s ease,transform .2s ease;
}
.nav-search button:hover{filter:brightness(1.08)}
.nav-search button:active{transform:translateY(-50%) scale(.95)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.04);color:var(--text-sub);cursor:pointer;
  transition:color .2s ease,border-color .2s ease;
}
.nav-toggle:hover{color:var(--text);border-color:rgba(79,195,247,.4)}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,filter .2s ease,color .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#04121c;
  box-shadow:0 0 0 1px rgba(79,195,247,.4),0 8px 24px rgba(37,150,209,.35);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(79,195,247,.55),0 12px 30px rgba(37,150,209,.45)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(79,195,247,.4),0 4px 12px rgba(37,150,209,.3)}
.btn-ghost{background:transparent;border-color:rgba(79,195,247,.45);color:var(--primary-light)}
.btn-ghost:hover{background:rgba(37,150,209,.12)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.text-link{
  display:inline-flex;align-items:center;gap:7px;
  color:var(--primary-light);font-size:14.5px;font-weight:600;
}
.text-link i{transition:transform .2s ease}
.text-link:hover i{transform:translateX(4px)}

/* hero */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.26;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(680px 360px at 28% 34%,#000,transparent 76%);
  mask-image:radial-gradient(680px 360px at 28% 34%,#000,transparent 76%);
}
.page-hero-inner{position:relative;z-index:2;padding:58px 0 66px;max-width:840px}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--text-muted);margin-bottom:20px}
.breadcrumb a{transition:color .2s ease}
.breadcrumb a:hover{color:var(--primary-light)}
.breadcrumb .sep{opacity:.55}
.breadcrumb .current{color:var(--text-muted)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-badge);font-size:13px;
  background:rgba(37,150,209,.12);color:var(--primary-light);
  border:1px solid rgba(79,195,247,.25);
}
.badge-accent{background:rgba(176,69,95,.14);color:var(--accent-light);border-color:rgba(212,103,127,.28)}
.page-hero h1{
  margin:18px 0 16px;
  font-size:clamp(28px,3.6vw,44px);
  font-weight:800;letter-spacing:.02em;line-height:1.3;
}
.page-hero .hero-lead{color:var(--text-sub);font-size:16.5px;max-width:720px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-meta span{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--radius-badge);font-size:13px;
  color:var(--text-sub);background:var(--glass);border:1px solid var(--line);
}
.hero-meta i{color:var(--primary-light)}

/* sections */
.section{position:relative;z-index:1;padding:72px 0}
.section-alt{background:linear-gradient(180deg,rgba(17,24,38,.55),rgba(10,14,23,.2));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{
  font-size:clamp(23px,2.4vw,32px);font-weight:700;letter-spacing:.02em;
  margin:14px 0 12px;line-height:1.4;
}
.section-head p{color:var(--text-sub);font-size:15.5px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;
  color:var(--primary-light);
}
.eyebrow::before{
  content:"";width:22px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-light));
}

/* intro */
.intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:start}
.intro-text p{color:var(--text-sub);font-size:15.5px}
.intro-text p + p{margin-top:16px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;
  border-radius:var(--radius-badge);font-size:13.5px;color:var(--text-sub);
  background:var(--glass);border:1px solid var(--line);
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.chip i{color:var(--accent-light)}
.chip:hover{color:var(--text);border-color:rgba(79,195,247,.3);transform:translateY(-2px)}
.intro-card{
  padding:26px;border-radius:var(--radius-glass);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
}
.intro-card h3{font-size:17px;font-weight:600;margin-bottom:14px}
.intro-list li{display:flex;gap:10px;padding:10px 0;font-size:14.5px;color:var(--text-sub);border-bottom:1px solid var(--line)}
.intro-list li:last-child{border-bottom:0}
.intro-list i{color:var(--primary-light);margin-top:6px;font-size:12px}

/* alternating rows */
.alt-rows{margin-top:8px}
.alt-row{
  display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;
  padding:38px 0;border-top:1px solid var(--line);
}
.alt-row:first-child{border-top:0;padding-top:0}
.alt-row.reverse .alt-media{order:2}
.alt-media{
  position:relative;border-radius:var(--radius-glass);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);background:var(--surface);
}
.alt-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .45s ease}
.alt-row:hover .alt-media img{transform:scale(1.03)}
.alt-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,14,23,0) 45%,rgba(10,14,23,.55) 100%);
  pointer-events:none;
}
.alt-index{
  display:inline-grid;place-items:center;width:44px;height:44px;border-radius:12px;
  font-size:15px;font-weight:800;color:var(--primary-light);
  background:rgba(37,150,209,.12);border:1px solid rgba(79,195,247,.28);
  margin-bottom:16px;
}
.alt-body h3{font-size:20px;font-weight:600;margin-bottom:12px;letter-spacing:.02em}
.alt-body p{color:var(--text-sub);font-size:15.5px;margin-bottom:18px}
.alt-tagrow{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.alt-tag{
  padding:4px 10px;border-radius:var(--radius-badge);font-size:12.5px;
  color:var(--accent-light);background:rgba(176,69,95,.14);border:1px solid rgba(212,103,127,.26);
}

/* checklist */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.check-item{
  display:flex;gap:14px;padding:22px;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .22s ease,border-color .22s ease;
}
.check-item:hover{transform:translateY(-4px);border-color:rgba(79,195,247,.25)}
.check-item i{color:var(--primary-light);font-size:16px;margin-top:6px}
.check-item h3{font-size:16px;font-weight:600;margin-bottom:6px}
.check-item p{color:var(--text-sub);font-size:14.5px}

/* faq */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:66px;padding:16px 6px 16px 18px;cursor:pointer;list-style:none;
  font-size:16.5px;font-weight:600;letter-spacing:.01em;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--primary-light));
}
.faq-item summary .plus{color:var(--primary-light);transition:transform .25s ease;flex:0 0 auto}
.faq-item[open] summary .plus{transform:rotate(45deg)}
.faq-body{padding:0 6px 22px 18px;color:var(--text-sub);font-size:15px}

/* cta band */
.cta-band{
  position:relative;overflow:hidden;border-radius:22px;padding:52px 44px;
  background:linear-gradient(135deg,rgba(37,150,209,.18),rgba(176,69,95,.14));
  border:1px solid rgba(79,195,247,.28);
  box-shadow:var(--shadow);
}
.cta-band::after{
  content:"";position:absolute;top:-40%;right:-8%;width:340px;height:340px;
  background:radial-gradient(circle,rgba(79,195,247,.24),transparent 68%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(22px,2.2vw,28px);font-weight:700;margin-bottom:10px;letter-spacing:.02em}
.cta-inner p{color:var(--text-sub);font-size:15.5px;max-width:640px}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap}

/* footer */
.site-footer{
  position:relative;z-index:1;margin-top:72px;
  border-top:1px solid var(--line);background:#080B12;
  padding:56px 0 24px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand p{color:var(--text-muted);font-size:14px;margin-top:16px;line-height:1.85}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-sub);transition:color .2s ease}
.footer-col a:hover{color:var(--primary-light)}
.footer-contact li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-sub)}
.footer-contact i{color:var(--primary-light)}
.footer-search{position:relative;margin-top:16px}
.footer-search input{
  width:100%;height:42px;padding:0 46px 0 14px;border-radius:var(--radius-img);
  background:#0F1622;border:1px solid var(--line);color:var(--text);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-search input::placeholder{color:var(--text-muted)}
.footer-search input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,150,209,.18);outline:none}
.footer-search button{
  position:absolute;right:5px;top:5px;width:32px;height:32px;border:0;border-radius:50%;
  cursor:pointer;color:#04121c;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  transition:filter .2s ease;
}
.footer-search button:hover{filter:brightness(1.08)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--text-muted);
}
.footer-bottom a{transition:color .2s ease}
.footer-bottom a:hover{color:var(--primary-light)}

/* responsive */
@media (max-width:1024px){
  .intro-grid{grid-template-columns:1fr;gap:28px}
  .alt-row{grid-template-columns:1fr;gap:26px}
  .alt-row.reverse .alt-media{order:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-band{padding:42px 30px}
}
@media (max-width:900px){
  .header-inner{flex-wrap:wrap;padding:12px 20px 14px;gap:12px;min-height:auto}
  .logo{margin-right:auto}
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .nav-search{order:3;width:100%;max-width:none;margin:0}
  .nav-links{
    order:4;display:none;width:100%;flex-direction:column;align-items:stretch;
    gap:2px;padding-top:10px;margin-top:4px;border-top:1px solid var(--line);
  }
  .nav-links.is-open{display:flex}
  .nav-link{height:46px;border-radius:12px;padding:0 14px}
  .nav-link.active{background:rgba(37,150,209,.12)}
  .nav-link.active::after{display:none}
  .container{padding:0 20px}
  .section{padding:48px 0}
  .page-hero-inner{padding:40px 0 48px}
  .check-grid{grid-template-columns:1fr}
}
@media (max-width:560px){
  .page-hero h1{font-size:26px}
  .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .cta-band{padding:32px 22px;border-radius:18px}
  .faq-item summary{font-size:15.5px;padding-left:16px}
  .faq-body{padding-left:16px}
}

/* roulang page: category2 */
:root{
    --bg:#0A0E17;
    --surface:#111826;
    --surface-2:#0F1622;
    --glass:rgba(255,255,255,0.045);
    --primary:#2596D1;
    --primary-light:#3FB0E8;
    --glow:rgba(79,195,247,0.35);
    --accent:#B0455F;
    --accent-light:#D4677F;
    --text:#E8EEF6;
    --text-2:#A7B2C2;
    --text-3:#6F7B8C;
    --line:rgba(255,255,255,0.08);
    --line-accent:rgba(79,195,247,0.4);
    --radius-card:16px;
    --radius-glass:18px;
    --radius-img:12px;
    --radius-pill:999px;
    --radius-badge:6px;
    --shadow:0 8px 30px rgba(0,0,0,0.35);
    --container:1200px;
    --gutter:24px;
    --section-gap:72px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background-color:var(--bg);
    background-image:
      radial-gradient(900px 520px at 84% -10%, rgba(37,150,209,0.20), transparent 62%),
      radial-gradient(720px 460px at 2% 16%, rgba(176,69,95,0.13), transparent 60%);
    background-attachment:fixed;
    color:var(--text);
    font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.9;
    letter-spacing:.01em;
  }
  img{max-width:100%;height:auto;display:block;}
  a{color:inherit;text-decoration:none;transition:color .2s ease;}
  button,input{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  strong,b{font-weight:700;}
  :focus-visible{outline:2px solid var(--primary-light);outline-offset:2px;border-radius:6px;}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
  .visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(10,14,23,0.86);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    transition:background .25s ease,box-shadow .25s ease;
  }
  .site-header.is-scrolled{background:rgba(10,14,23,0.95);box-shadow:0 12px 34px rgba(0,0,0,0.45);}
  .header-inner{display:flex;align-items:center;gap:22px;min-height:78px;}
  .logo{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
  .logo-mark{
    width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
    font-weight:800;font-size:16px;letter-spacing:.02em;color:#fff;
    background:linear-gradient(135deg,var(--primary),var(--primary-light));
    box-shadow:0 0 0 1px rgba(79,195,247,.45),0 8px 20px rgba(37,150,209,.35);
  }
  .logo-text strong{display:block;font-size:16px;font-weight:800;letter-spacing:.02em;line-height:1.35;}
  .logo-text small{display:block;font-size:12px;color:var(--text-3);letter-spacing:.18em;line-height:1.4;}

  .nav-links{display:flex;align-items:center;gap:4px;flex:0 0 auto;}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;min-height:44px;
    padding:8px 12px;font-size:15px;color:var(--text-2);border-radius:8px;
    transition:color .2s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;border-radius:2px;
    background:linear-gradient(90deg,var(--primary),var(--primary-light));
    box-shadow:0 0 12px var(--glow);
    transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
  }
  .nav-link:hover{color:var(--text);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:var(--text);font-weight:600;}
  .nav-link.active::after{transform:scaleX(1);}

  .nav-search{
    flex:1 1 auto;max-width:520px;margin:0 auto;
    display:flex;align-items:center;gap:10px;
    background:var(--surface-2);
    border:1px solid var(--line);border-radius:var(--radius-pill);
    padding:5px 5px 5px 18px;
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(37,150,209,.18);}
  .nav-search > i{color:var(--text-3);font-size:14px;}
  .nav-search input{flex:1 1 auto;min-width:0;background:transparent;border:0;outline:none;font-size:14px;padding:9px 0;color:var(--text);}
  .nav-search input::placeholder{color:var(--text-3);}
  .nav-search button{
    width:38px;height:38px;flex:0 0 38px;border:0;border-radius:50%;
    background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;
    display:grid;place-items:center;cursor:pointer;
    box-shadow:0 0 0 1px rgba(79,195,247,.45),0 6px 16px rgba(37,150,209,.4);
    transition:transform .2s ease,filter .2s ease;
  }
  .nav-search button:hover{filter:brightness(1.12);transform:translateY(-1px);}
  .nav-search button:active{transform:translateY(1px);}

  .nav-toggle{
    display:none;width:44px;height:44px;flex:0 0 44px;
    border:1px solid var(--line);border-radius:12px;
    background:rgba(255,255,255,.04);color:var(--text);cursor:pointer;
  }
  .nav-toggle:hover{border-color:var(--line-accent);color:var(--primary-light);}

  .mobile-panel{display:none;border-top:1px solid var(--line);background:rgba(8,11,18,0.98);padding:14px 0 20px;}
  .mobile-panel.open{display:block;}
  .mobile-link{
    display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:10px;
    color:var(--text-2);font-size:15px;
  }
  .mobile-link:hover,.mobile-link.active{background:rgba(37,150,209,.12);color:var(--text);}
  .mobile-cta{margin-top:12px;width:100%;}

  /* ============ 按钮与文字链 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:46px;padding:0 24px;border-radius:var(--radius-pill);
    font-size:15px;font-weight:600;letter-spacing:.02em;
    border:1px solid transparent;cursor:pointer;
    transition:transform .2s ease,box-shadow .2s ease,background .2s ease,filter .2s ease,color .2s ease;
  }
  .btn-primary{
    background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;
    box-shadow:0 0 0 1px rgba(79,195,247,.4),0 8px 24px rgba(37,150,209,.35);
  }
  .btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(79,195,247,.65),0 12px 30px rgba(37,150,209,.48);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{background:transparent;border-color:rgba(79,195,247,.5);color:var(--text);}
  .btn-ghost:hover{background:rgba(37,150,209,.12);border-color:var(--primary-light);}
  .btn-sm{min-height:42px;padding:0 18px;font-size:14px;}
  .link-arrow{display:inline-flex;align-items:center;gap:7px;color:var(--primary-light);font-size:14px;font-weight:600;}
  .link-arrow i{transition:transform .22s ease;}
  .link-arrow:hover{color:#fff;}
  .link-arrow:hover i{transform:translateX(4px);}

  /* ============ 分类小 Hero ============ */
  .cat-hero{
    position:relative;overflow:hidden;
    padding:64px 0 56px;
    border-bottom:1px solid var(--line);
    background-image:
      linear-gradient(112deg, rgba(10,14,23,.95) 0%, rgba(10,14,23,.78) 48%, rgba(10,14,23,.62) 100%),
      url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center right;
  }
  .cat-hero::before{
    content:"";position:absolute;inset:0;
    background-image:
      linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
    background-size:58px 58px;
    -webkit-mask-image:radial-gradient(640px 380px at 18% 22%, #000 0%, transparent 78%);
    mask-image:radial-gradient(640px 380px at 18% 22%, #000 0%, transparent 78%);
    pointer-events:none;
  }
  .cat-hero::after{
    content:"";position:absolute;top:-140px;right:-80px;width:460px;height:460px;border-radius:50%;
    background:radial-gradient(circle, rgba(79,195,247,.22), transparent 68%);
    pointer-events:none;
  }
  .cat-hero-inner{position:relative;z-index:2;max-width:840px;}
  .breadcrumb{font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:18px;}
  .breadcrumb a{color:var(--text-3);}
  .breadcrumb a:hover{color:var(--primary-light);}
  .breadcrumb .sep{opacity:.6;}
  .breadcrumb .current{color:var(--text-3);}
  .cat-tag{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 14px;border-radius:var(--radius-pill);font-size:13px;letter-spacing:.06em;
    color:var(--accent-light);background:rgba(176,69,95,.16);border:1px solid rgba(212,103,127,.35);
  }
  .cat-hero h1{
    margin-top:18px;
    font-size:clamp(28px,4vw,46px);
    font-weight:800;line-height:1.3;letter-spacing:.02em;
    text-shadow:0 0 40px rgba(37,150,209,.28);
  }
  .cat-lead{margin-top:16px;max-width:780px;color:var(--text-2);font-size:16.5px;}
  .hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;align-items:center;gap:12px;}
  .hero-facts{margin-top:36px;display:flex;flex-wrap:wrap;gap:14px;}
  .hero-facts li{
    min-width:170px;padding:16px 20px;border-radius:14px;
    background:var(--glass);border:1px solid var(--line);
    backdrop-filter:blur(12px);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  }
  .hero-facts li strong{display:block;font-size:26px;font-weight:800;line-height:1.3;color:var(--primary-light);letter-spacing:-.01em;}
  .hero-facts li span{font-size:13px;color:var(--text-3);}

  /* ============ 通用板块 ============ */
  .section{padding:var(--section-gap) 0;}
  .section-alt{
    background:linear-gradient(180deg, rgba(17,24,38,.72), rgba(10,14,23,.15));
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  }
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
  .section-head h2{font-size:clamp(22px,2.7vw,32px);font-weight:700;letter-spacing:.02em;line-height:1.35;}
  .section-head .sub{margin-top:10px;max-width:660px;color:var(--text-2);font-size:15px;}

  /* ============ 卡片网格 2x3 ============ */
  .card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
  .card{
    display:flex;flex-direction:column;overflow:hidden;
    background:var(--glass);border:1px solid var(--line);
    border-radius:var(--radius-card);
    backdrop-filter:blur(12px);
    box-shadow:var(--shadow), inset 0 1px 0 rgba(255,255,255,.06);
    transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
  }
  .card:hover{
    transform:translateY(-4px);
    border-color:rgba(79,195,247,.25);
    box-shadow:0 18px 44px rgba(0,0,0,.48), inset 0 1px 0 rgba(255,255,255,.09);
  }
  .card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--surface-2);}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out;}
  .card:hover .card-media img{transform:scale(1.04);}
  .card-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg, rgba(10,14,23,0) 42%, rgba(10,14,23,.78) 100%);}
  .card-badge{
    position:absolute;left:14px;top:14px;z-index:2;
    padding:4px 10px;border-radius:var(--radius-badge);font-size:12px;letter-spacing:.04em;
    color:var(--accent-light);background:rgba(176,69,95,.2);
    border:1px solid rgba(212,103,127,.38);backdrop-filter:blur(6px);
  }
  .card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
  .card-body h3{font-size:18px;font-weight:600;letter-spacing:.02em;line-height:1.5;}
  .card-body p{color:var(--text-2);font-size:14.5px;line-height:1.85;}
  .card-foot{
    margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    font-size:13px;color:var(--text-3);
  }
  .card-foot .go{display:inline-flex;align-items:center;gap:6px;color:var(--primary-light);font-weight:600;}
  .card-foot .go i{transition:transform .22s ease;}
  .card:hover .card-foot .go i{transform:translateX(4px);}

  /* ============ 关注要点 ============ */
  .focus-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
  .focus-item{
    display:flex;gap:18px;padding:24px;border-radius:var(--radius-card);
    background:rgba(255,255,255,.035);border:1px solid var(--line);
    transition:transform .22s ease,border-color .22s ease,background .22s ease;
  }
  .focus-item:hover{transform:translateY(-3px);border-color:rgba(79,195,247,.25);background:rgba(37,150,209,.07);}
  .focus-num{
    flex:0 0 46px;height:46px;border-radius:10px;display:grid;place-items:center;
    font-weight:800;font-size:15px;letter-spacing:.02em;
    color:var(--primary-light);background:rgba(37,150,209,.13);border:1px solid rgba(79,195,247,.32);
  }
  .focus-item h3{font-size:17px;font-weight:600;margin-bottom:6px;}
  .focus-item p{color:var(--text-2);font-size:14.5px;line-height:1.85;}

  /* ============ 更新节奏 ============ */
  .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;position:relative;}
  .steps::before{
    content:"";position:absolute;top:15px;left:8px;right:8px;height:1px;
    background:linear-gradient(90deg, rgba(79,195,247,.5), rgba(79,195,247,.08));
  }
  .step{position:relative;padding-top:44px;}
  .step::before{
    content:"";position:absolute;top:10px;left:0;width:11px;height:11px;border-radius:50%;
    background:var(--primary-light);box-shadow:0 0 0 5px rgba(37,150,209,.16),0 0 14px var(--glow);
  }
  .step .step-time{font-size:13px;color:var(--accent-light);letter-spacing:.04em;}
  .step h3{margin-top:8px;font-size:17px;font-weight:600;}
  .step p{margin-top:8px;color:var(--text-2);font-size:14.5px;line-height:1.85;}

  /* ============ FAQ ============ */
  .faq-list{display:grid;gap:12px;max-width:900px;}
  .faq-item{
    border:1px solid var(--line);border-radius:14px;overflow:hidden;
    background:rgba(255,255,255,.035);
    transition:border-color .2s ease,background .2s ease;
  }
  .faq-item:hover{border-color:rgba(79,195,247,.22);}
  .faq-item.open{border-color:rgba(79,195,247,.35);background:rgba(37,150,209,.06);}
  .faq-q{
    width:100%;min-height:66px;display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:16px 20px 16px 24px;background:transparent;border:0;cursor:pointer;text-align:left;
    font-size:16px;font-weight:600;color:var(--text);line-height:1.6;
  }
  .faq-q .q-text{position:relative;padding-left:16px;}
  .faq-q .q-text::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:3px;height:18px;border-radius:3px;
    background:linear-gradient(180deg,var(--primary),var(--primary-light));
  }
  .faq-icon{
    flex:0 0 28px;height:28px;display:grid;place-items:center;border-radius:50%;
    color:var(--primary-light);background:rgba(37,150,209,.13);
    transition:transform .25s ease,background .25s ease;
  }
  .faq-item.open .faq-icon{transform:rotate(45deg);}
  .faq-a{
    display:none;padding:16px 24px 20px 40px;
    border-top:1px solid var(--line);color:var(--text-2);font-size:15px;line-height:1.9;
  }
  .faq-item.open .faq-a{display:block;}

  /* ============ 底部 CTA ============ */
  .cta-band{padding:0 0 var(--section-gap);}
  .cta-inner{
    position:relative;overflow:hidden;
    display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
    padding:52px 48px;border-radius:20px;
    background:linear-gradient(120deg, rgba(37,150,209,.22), rgba(176,69,95,.16)) , var(--surface);
    border:1px solid rgba(79,195,247,.28);
    box-shadow:0 22px 54px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.07);
  }
  .cta-inner::before{
    content:"";position:absolute;top:-60%;left:-10%;width:46%;height:220%;
    background:linear-gradient(90deg, transparent, rgba(79,195,247,.14), transparent);
    transform:rotate(14deg);pointer-events:none;
  }
  .cta-copy{position:relative;z-index:2;max-width:640px;}
  .cta-copy h2{font-size:clamp(22px,2.8vw,30px);font-weight:700;letter-spacing:.02em;}
  .cta-copy p{margin-top:12px;color:var(--text-2);font-size:15px;}
  .cta-actions{position:relative;z-index:2;display:flex;align-items:center;gap:18px;flex-wrap:wrap;}

  /* ============ 页脚 ============ */
  .site-footer{border-top:1px solid var(--line);background:#080B12;padding-top:56px;}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}
  .footer-brand .logo{margin-bottom:16px;}
  .footer-brand p{color:var(--text-2);font-size:14px;line-height:1.9;max-width:340px;}
  .footer-col h4{font-size:15px;font-weight:700;letter-spacing:.04em;margin-bottom:14px;}
  .footer-col ul{display:grid;gap:10px;}
  .footer-col a{color:var(--text-2);font-size:14px;}
  .footer-col a:hover{color:var(--primary-light);}
  .footer-contact li{display:flex;align-items:center;gap:10px;color:var(--text-2);font-size:14px;}
  .footer-contact i{color:var(--primary-light);width:16px;text-align:center;}
  .footer-search{
    margin-top:16px;display:flex;align-items:center;gap:8px;
    background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-pill);
    padding:4px 4px 4px 14px;transition:border-color .2s ease,box-shadow .2s ease;
  }
  .footer-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(37,150,209,.16);}
  .footer-search input{flex:1 1 auto;min-width:0;background:transparent;border:0;outline:none;font-size:13px;padding:8px 0;color:var(--text);}
  .footer-search input::placeholder{color:var(--text-3);}
  .footer-search button{
    width:34px;height:34px;flex:0 0 34px;border:0;border-radius:50%;cursor:pointer;
    background:rgba(37,150,209,.22);color:var(--primary-light);
    transition:background .2s ease,color .2s ease;
  }
  .footer-search button:hover{background:rgba(37,150,209,.38);color:#fff;}
  .footer-bottom{
    margin-top:48px;padding:20px 0;border-top:1px solid var(--line);
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:13px;color:var(--text-3);
  }
  .footer-bottom a{color:var(--text-3);}
  .footer-bottom a:hover{color:var(--primary-light);}

  /* ============ 响应式 ============ */
  @media (max-width:1280px){
    .container{max-width:100%;}
  }
  @media (max-width:1024px){
    .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
    .steps::before{display:none;}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .cta-inner{padding:44px 36px;}
  }
  @media (max-width:960px){
    .header-inner{flex-wrap:wrap;row-gap:12px;padding-top:12px;padding-bottom:12px;min-height:auto;}
    .nav-links{display:none;}
    .nav-search{order:3;max-width:none;width:100%;margin:0;}
    .nav-cta{display:none;}
    .nav-toggle{display:grid;place-items:center;margin-left:auto;}
    .cat-hero{padding:48px 0 44px;}
  }
  @media (max-width:768px){
    :root{--section-gap:56px;}
    .focus-list{grid-template-columns:1fr;}
    .hero-facts li{min-width:calc(50% - 7px);flex:1 1 auto;}
  }
  @media (max-width:640px){
    :root{--section-gap:48px;}
    .container{padding:0 20px;}
    .card-grid{grid-template-columns:1fr;}
    .steps{grid-template-columns:1fr;gap:8px;}
    .step{padding-top:30px;padding-left:24px;}
    .step::before{top:8px;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .cta-inner{padding:36px 24px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{width:100%;}
    .faq-q{padding:16px 16px 16px 18px;font-size:15px;}
    .faq-a{padding:14px 18px 18px 34px;}
    .hero-facts li{min-width:100%;}
    .cat-hero h1{font-size:26px;}
    .breadcrumb{font-size:12px;}
  }

/* roulang page: category3 */
:root{
  --bg:#0A0E17;
  --surface:#111826;
  --surface-2:#0F1622;
  --glass:rgba(255,255,255,0.045);
  --primary:#2596D1;
  --primary-light:#3FB0E8;
  --glow:rgba(79,195,247,0.35);
  --accent:#B0455F;
  --accent-light:#D4677F;
  --text:#E8EEF6;
  --text-2:#A7B2C2;
  --text-3:#6F7B8C;
  --line:rgba(255,255,255,0.08);
  --line-strong:rgba(79,195,247,0.4);
  --radius:16px;
  --radius-lg:18px;
  --radius-sm:12px;
  --shadow:0 8px 30px rgba(0,0,0,0.35);
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
img{max-width:100%;display:block;}
button,input{font-family:inherit;}

body.page-body{
  margin:0;
  background-color:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:0.02em;
  background-image:
    radial-gradient(1000px 560px at 84% -10%, rgba(37,150,209,0.18), transparent 62%),
    radial-gradient(760px 460px at 6% 8%, rgba(176,69,95,0.12), transparent 60%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}

div.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--primary-light);outline-offset:2px;}
h1,h2,h3,h4{margin:0;letter-spacing:0.02em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(10,14,23,0.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{
  background:rgba(10,14,23,0.92);
  box-shadow:0 10px 30px rgba(0,0,0,0.4);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:14px;
  flex-wrap:wrap;
  padding-top:14px;
  padding-bottom:14px;
}

.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:42px;height:42px;border-radius:13px;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;letter-spacing:0.04em;color:#fff;
  background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);
  box-shadow:0 0 0 1px rgba(79,195,247,0.35),0 8px 22px rgba(37,150,209,0.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.25;}
.logo-text strong{font-size:16px;font-weight:800;color:var(--text);white-space:nowrap;}
.logo-text small{font-size:11px;color:var(--text-3);letter-spacing:0.16em;}

.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links-end{margin-left:auto;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 10px;
  font-size:14px;
  color:var(--text-2);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:10px;right:10px;bottom:3px;
  height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-light));
  opacity:0;transform:scaleX(.4);
  transition:opacity .22s ease,transform .22s ease;
  box-shadow:0 0 10px var(--glow);
}
.nav-link:hover{color:var(--primary-light);}
.nav-link:hover::after{opacity:.7;transform:scaleX(1);}
.nav-link.active{color:#fff;}
.nav-link.active::after{opacity:1;transform:scaleX(1);}

.nav-search{
  flex:1 1 220px;
  max-width:340px;
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:8px;
  padding:5px 5px 5px 14px;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:999px;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.nav-search:focus-within{border-color:var(--line-strong);box-shadow:0 0 0 3px rgba(37,150,209,0.16);}
.nav-search i.fa-magnifying-glass{color:var(--text-3);font-size:14px;}
.nav-search input{
  flex:1;min-width:0;
  background:transparent;border:0;color:var(--text);
  font-size:14px;height:34px;outline:none;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search button{
  width:34px;height:34px;flex:0 0 auto;
  border:0;border-radius:999px;cursor:pointer;
  color:#fff;font-size:13px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  box-shadow:0 0 0 1px rgba(79,195,247,0.4),0 6px 16px rgba(37,150,209,0.35);
  transition:filter .2s ease,transform .2s ease;
}
.nav-search button:hover{filter:brightness(1.1);transform:translateY(-1px);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:0.02em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease,background-color .2s ease,border-color .2s ease;
}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  box-shadow:0 0 0 1px rgba(79,195,247,0.4),0 8px 24px rgba(37,150,209,0.35);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(79,195,247,0.6),0 12px 30px rgba(37,150,209,0.45);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  color:var(--primary-light);
  background:transparent;
  border-color:rgba(79,195,247,0.5);
}
.btn-ghost:hover{background:rgba(37,150,209,0.12);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.nav-cta{min-height:38px;padding:0 16px;font-size:13px;flex:0 0 auto;}

.nav-toggle{
  display:none;
  width:44px;height:44px;margin-left:auto;
  align-items:center;justify-content:center;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:12px;
  color:var(--text);
  font-size:16px;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--primary-light);}

.mobile-menu{display:none;border-top:1px solid var(--line);background:rgba(10,14,23,0.98);}
.mobile-menu.open{display:block;}
.mobile-menu .container{padding-top:10px;padding-bottom:16px;}
.mobile-menu a{
  display:flex;align-items:center;
  min-height:48px;padding:0 4px;
  font-size:15px;color:var(--text-2);
  border-bottom:1px solid rgba(255,255,255,0.05);
}
.mobile-menu a:hover,.mobile-menu a.active{color:var(--primary-light);}

/* ---------- 分类首屏 ---------- */
.cat-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(180deg,rgba(10,14,23,0.84) 0%,rgba(10,14,23,0.95) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.cat-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,0.05) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,0.7),transparent 82%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,0.7),transparent 82%);
  pointer-events:none;
}
.cat-hero::after{
  content:"";
  position:absolute;right:-140px;top:-160px;
  width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(37,150,209,0.28),transparent 68%);
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2;}
.hero-inner{padding:56px 0 60px;max-width:880px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--text-3);margin-bottom:22px;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary-light);}
.breadcrumb .sep{color:var(--text-3);}
.breadcrumb .current{color:var(--text-3);}

.chip{
  display:inline-flex;align-items:center;gap:7px;
  height:30px;padding:0 13px;border-radius:999px;
  font-size:13px;letter-spacing:0.06em;
  color:var(--primary-light);
  background:rgba(37,150,209,0.12);
  border:1px solid rgba(79,195,247,0.28);
}
.chip-accent{
  color:var(--accent-light);
  background:rgba(176,69,95,0.14);
  border-color:rgba(212,103,127,0.3);
}
.cat-title{
  margin:20px 0 16px;
  font-size:clamp(30px,4.2vw,50px);
  font-weight:800;
  line-height:1.24;
  letter-spacing:0.01em;
  background:linear-gradient(120deg,#FFFFFF 0%,#CFE6F7 58%,#8FC7E8 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.cat-sub{
  max-width:720px;
  font-size:17px;
  line-height:1.85;
  color:var(--text-2);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-facts{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;
  margin-top:36px;
  max-width:820px;
}
.fact-card{
  padding:16px 18px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.06);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.fact-card strong{display:block;font-size:20px;font-weight:800;color:var(--primary-light);letter-spacing:-0.01em;}
.fact-card span{font-size:13px;color:var(--text-3);}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0;}
.section-alt{background:rgba(17,24,38,0.5);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{
  font-size:clamp(24px,3vw,32px);
  font-weight:700;
  line-height:1.4;
  color:var(--text);
}
.section-sub{margin-top:12px;font-size:16px;color:var(--text-2);}
.eyebrow{
  display:inline-block;
  margin-bottom:14px;
  font-size:12px;
  letter-spacing:0.2em;
  color:var(--primary-light);
  text-transform:uppercase;
}
.section-head-row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  margin-bottom:40px;
}
.eyebrow-line{display:inline-block;width:28px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--primary),var(--accent));vertical-align:middle;margin-right:10px;}

/* ---------- 时间线 ---------- */
.timeline{position:relative;max-width:900px;}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:64px minmax(0,1fr);
  gap:24px;
  padding-bottom:28px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;
  left:31px;top:66px;bottom:2px;
  width:2px;
  background:linear-gradient(180deg,rgba(79,195,247,0.45),rgba(79,195,247,0.02));
}
.tl-item:last-child::before{display:none;}
.tl-num{
  position:relative;z-index:2;
  width:64px;height:64px;border-radius:18px;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:800;letter-spacing:-0.01em;color:#fff;
  background:linear-gradient(135deg,rgba(37,150,209,0.95),rgba(176,69,95,0.8));
  box-shadow:0 0 0 1px rgba(79,195,247,0.38),0 10px 26px rgba(37,150,209,0.26);
}
.tl-card{
  padding:22px 24px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.06);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.tl-card:hover{transform:translateY(-4px);border-color:rgba(37,150,209,0.28);box-shadow:var(--shadow);}
.tl-card h3{font-size:19px;font-weight:700;color:var(--text);}
.tl-card p{margin-top:10px;font-size:15px;color:var(--text-2);line-height:1.85;}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{
  display:inline-flex;align-items:center;
  height:26px;padding:0 10px;border-radius:6px;
  font-size:12px;color:var(--primary-light);
  background:rgba(37,150,209,0.12);
  border:1px solid rgba(79,195,247,0.22);
}
.tag-accent{color:var(--accent-light);background:rgba(176,69,95,0.14);border-color:rgba(212,103,127,0.28);}

.text-link{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:16px;
  font-size:14px;font-weight:600;
  color:var(--primary-light);
}
.text-link i{transition:transform .2s ease;}
.text-link:hover i{transform:translateX(4px);}

/* ---------- 数据条 ---------- */
.metrics-band{
  background:linear-gradient(135deg,#0C1220 0%,#111826 55%,#0C1220 100%);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  position:relative;
  overflow:hidden;
}
.metrics-band::after{
  content:"";
  position:absolute;left:-120px;bottom:-220px;
  width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(176,69,95,0.22),transparent 68%);
  pointer-events:none;
}
.metrics-grid{
  position:relative;z-index:2;
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
  padding:48px 0;
}
.metric{text-align:left;padding-right:12px;border-right:1px solid var(--line);}
.metric:last-child{border-right:0;}
.metric-num{
  display:block;
  font-size:clamp(36px,4vw,52px);
  font-weight:800;
  line-height:1.1;
  letter-spacing:-0.01em;
  color:var(--primary-light);
}
.metric-num span{font-size:18px;font-weight:700;margin-left:4px;color:var(--text-2);}
.metric-label{margin-top:8px;font-size:14px;color:var(--text-2);}

/* ---------- 图文区 ---------- */
.split{
  display:grid;
  grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:44px;
  align-items:center;
}
.split-media{
  margin:0;
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.split-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11;}
.split-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,14,23,0) 45%,rgba(10,14,23,0.72) 100%);
}
.split-media figcaption{
  position:absolute;left:18px;right:18px;bottom:14px;
  z-index:2;font-size:13px;color:var(--text-2);
}
.angle-item{
  padding:20px 0;
  border-bottom:1px solid var(--line);
}
.angle-item:first-child{padding-top:0;}
.angle-item:last-child{border-bottom:0;padding-bottom:0;}
.angle-item h3{
  display:flex;align-items:center;gap:10px;
  font-size:19px;font-weight:700;color:var(--text);
}
.angle-item h3 i{color:var(--accent-light);font-size:14px;}
.angle-item p{margin-top:10px;font-size:15px;color:var(--text-2);line-height:1.85;}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  min-height:66px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 4px 16px 16px;
  background:transparent;border:0;cursor:pointer;
  text-align:left;
  color:var(--text);
  font-size:16px;font-weight:600;
  position:relative;
}
.faq-q::before{
  content:"";
  position:absolute;left:0;top:22px;bottom:22px;
  width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
  opacity:.85;
}
.faq-q:hover{color:var(--primary-light);}
.faq-q i{
  flex:0 0 auto;
  color:var(--primary-light);
  font-size:14px;
  transition:transform .25s ease;
}
.faq-item.open .faq-q i{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .32s ease;
}
.faq-item.open .faq-a{max-height:300px;}
.faq-a p{
  padding:0 40px 22px 16px;
  font-size:15px;color:var(--text-2);line-height:1.85;
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(120deg,rgba(9,13,22,0.94) 0%,rgba(13,20,33,0.9) 55%,rgba(9,13,22,0.96) 100%),
    url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
}
.cta-band::before{
  content:"";
  position:absolute;left:-80px;top:-120px;
  width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(37,150,209,0.3),transparent 70%);
  pointer-events:none;
}
.cta-inner{
  position:relative;z-index:2;
  padding:60px 0;
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.cta-copy{max-width:620px;}
.cta-copy h2{font-size:clamp(22px,2.8vw,30px);font-weight:700;line-height:1.4;}
.cta-copy p{margin-top:12px;font-size:15px;color:var(--text-2);}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:0;
  padding-top:56px;
  background:rgba(8,11,18,0.94);
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.4fr;
  gap:36px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.85;max-width:340px;}
.footer-col h4{font-size:15px;font-weight:700;color:var(--text);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:14px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--primary-light);}
.footer-contact li{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--text-2);}
.footer-contact i{color:var(--primary-light);font-size:13px;}
.footer-search{
  display:flex;align-items:center;gap:8px;
  margin-top:16px;
  padding:4px 4px 4px 14px;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:999px;
}
.footer-search:focus-within{border-color:var(--line-strong);}
.footer-search input{flex:1;min-width:0;height:34px;background:transparent;border:0;outline:none;color:var(--text);font-size:14px;}
.footer-search input::placeholder{color:var(--text-3);}
.footer-search button{
  width:34px;height:34px;flex:0 0 auto;border:0;border-radius:999px;cursor:pointer;color:#fff;font-size:13px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  box-shadow:0 0 0 1px rgba(79,195,247,0.35);
  transition:filter .2s ease;
}
.footer-search button:hover{filter:brightness(1.1);}
.footer-bottom{
  margin-top:38px;
  padding:18px 0 22px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary-light);}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .nav-search{max-width:240px;}
  .nav-link{padding:0 8px;font-size:13.5px;}
  .split{gap:32px;}
}
@media (max-width:980px){
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-search{
    order:3;
    flex:1 0 100%;
    max-width:none;
    margin:4px 0 0;
  }
  .hero-inner{padding:44px 0 50px;}
  .section{padding:56px 0;}
  .split{grid-template-columns:1fr;}
  .split-media{order:-1;}
  .metrics-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;padding:40px 0;}
  .metric{border-right:0;padding-right:0;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-brand p{max-width:none;}
}
@media (max-width:640px){
  div.container{padding:0 20px;}
  .hero-facts{grid-template-columns:1fr;}
  .section{padding:48px 0;}
  .tl-item{grid-template-columns:48px minmax(0,1fr);gap:16px;padding-bottom:22px;}
  .tl-num{width:48px;height:48px;border-radius:14px;font-size:16px;}
  .tl-item::before{left:23px;top:52px;}
  .tl-card{padding:18px;}
  .tl-card h3{font-size:17px;}
  .metrics-grid{grid-template-columns:1fr;gap:22px;}
  .metric-num{font-size:38px;}
  .cat-sub{font-size:15.5px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .footer-col:last-child{grid-column:1 / -1;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .cta-inner{padding:44px 0;}
  .faq-q{font-size:15px;padding-left:14px;}
  .faq-a p{padding-right:16px;}
}

/* roulang page: category4 */
:root{
  --bg:#0A0E17;
  --surface:#111826;
  --glass:rgba(255,255,255,0.045);
  --primary:#2596D1;
  --primary-light:#3FB0E8;
  --glow:rgba(79,195,247,0.35);
  --accent:#B0455F;
  --accent-light:#D4677F;
  --text:#E8EEF6;
  --text-sub:#A7B2C2;
  --text-dim:#6F7B8C;
  --border:rgba(255,255,255,0.08);
  --border-accent:rgba(79,195,247,0.4);
  --r-card:16px;
  --r-glass:18px;
  --r-img:12px;
  --r-pill:999px;
  --shadow:0 8px 30px rgba(0,0,0,0.35);
  --shadow-hover:0 16px 44px rgba(0,0,0,0.45);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
.site-body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
:focus-visible{outline:2px solid var(--primary-light);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:72px 0}
.section--tight{padding:56px 0}
.h1{font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.24;letter-spacing:.02em;margin:0;color:var(--text)}
.h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.34;letter-spacing:.02em;margin:0;color:var(--text)}
.h3{font-size:19px;font-weight:600;line-height:1.5;letter-spacing:.01em;margin:0;color:var(--text)}
.lead{color:var(--text-sub);font-size:16.5px;line-height:1.95}
.muted{color:var(--text-dim);font-size:13.5px}
.section-head{max-width:760px;margin-bottom:36px}
.section-head p{margin-top:14px;color:var(--text-sub)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(37,150,209,.12);
  box-shadow:inset 0 0 0 1px rgba(79,195,247,.28);
  color:var(--primary-light);font-size:13px;letter-spacing:.08em
}
.badge-accent{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(176,69,95,.14);color:var(--accent-light);font-size:13px
}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,14,23,.78);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  transition:background-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(10,14,23,.94);box-shadow:0 10px 30px rgba(0,0,0,.35)}
.header-inner{display:flex;align-items:center;gap:16px;min-height:78px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  display:grid;place-items:center;width:42px;height:42px;border-radius:12px;
  background:linear-gradient(135deg,#2596D1,#3FB0E8);
  color:#04121c;font-weight:800;font-size:15px;letter-spacing:-.01em;
  box-shadow:0 0 0 1px rgba(79,195,247,.4),0 8px 24px rgba(37,150,209,.32);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:16px;font-weight:800;letter-spacing:.01em;color:var(--text)}
.logo-text small{font-size:11px;color:var(--text-dim);letter-spacing:.24em}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;padding:10px 13px;border-radius:10px;
  font-size:14.5px;color:var(--text-sub);white-space:nowrap;
  transition:color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-light));
  opacity:0;transform:scaleX(.35);transform-origin:left;transition:opacity .22s ease,transform .22s ease;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{opacity:.65;transform:scaleX(1)}
.nav-link.active{
  color:var(--text);background:rgba(37,150,209,.13);
  box-shadow:inset 0 0 0 1px rgba(79,195,247,.28);
}
.nav-link.active::after{opacity:1;transform:scaleX(1)}
.nav-search{position:relative;flex:1 1 auto;max-width:460px;margin:0 auto}
.nav-search input{
  width:100%;height:44px;border-radius:var(--r-pill);
  background:#0F1622;border:1px solid var(--border);
  padding:0 56px 0 44px;color:var(--text);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.nav-search input::placeholder{color:var(--text-dim)}
.nav-search input:focus{
  outline:none;border-color:var(--primary);
  background:#0D141F;
  box-shadow:0 0 0 3px rgba(79,195,247,.16);
}
.nav-search .search-icon{
  position:absolute;left:17px;top:50%;transform:translateY(-50%);
  color:var(--text-dim);font-size:14px;pointer-events:none
}
.nav-search button{
  position:absolute;right:5px;top:50%;transform:translateY(-50%);
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(135deg,#2596D1,#3FB0E8);color:#06131d;font-size:13px;
  box-shadow:0 0 0 1px rgba(79,195,247,.4),0 6px 18px rgba(37,150,209,.35);
  transition:filter .2s ease,transform .2s ease;
}
.nav-search button:hover{filter:brightness(1.1)}
.nav-search button:active{transform:translateY(-50%) scale(.96)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.02em;white-space:nowrap;
  transition:transform .2s ease,filter .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,#2596D1,#3FB0E8);color:#04141f;
  box-shadow:0 0 0 1px rgba(79,195,247,.4),0 8px 24px rgba(37,150,209,.35);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(79,195,247,.55),0 12px 30px rgba(37,150,209,.45)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;color:var(--text);box-shadow:inset 0 0 0 1px var(--border-accent);
}
.btn-ghost:hover{background:rgba(37,150,209,.12);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.nav-cta{flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.04);box-shadow:inset 0 0 0 1px var(--border);
  place-items:center;color:var(--text);font-size:17px;
}
.nav-toggle:hover{background:rgba(37,150,209,.14)}
.mobile-menu{display:none;border-top:1px solid var(--border);background:rgba(10,14,23,.98)}
.mobile-menu.is-open{display:block}
.mobile-menu .inner{padding:16px 0 24px}
.mobile-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 14px;border-radius:12px;
  color:var(--text-sub);font-size:15px;
}
.mobile-link:hover{background:rgba(37,150,209,.12);color:var(--text)}
.mobile-link.active{background:rgba(37,150,209,.16);color:var(--text);box-shadow:inset 0 0 0 1px rgba(79,195,247,.3)}
.mobile-menu .mobile-cta{margin-top:14px;width:100%}

/* ===== 分类小 Hero ===== */
.page-hero{
  position:relative;overflow:hidden;
  padding:48px 0 68px;
  background:
    radial-gradient(880px 420px at 80% -12%,rgba(37,150,209,.24),transparent 62%),
    radial-gradient(620px 320px at 6% 4%,rgba(176,69,95,.16),transparent 60%),
    linear-gradient(180deg,#0B1220,#0A0E17);
  border-bottom:1px solid var(--border);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(720px 380px at 68% 12%,#000 12%,transparent 78%);
  -webkit-mask-image:radial-gradient(720px 380px at 68% 12%,#000 12%,transparent 78%);
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-dim)}
.breadcrumb a:hover{color:var(--primary-light)}
.breadcrumb .sep{color:rgba(255,255,255,.22)}
.breadcrumb .current{color:var(--text-dim)}
.page-hero h1{margin-top:20px;max-width:960px}
.hero-sub{margin-top:18px;max-width:780px;color:var(--text-sub);font-size:17px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:var(--glass);box-shadow:inset 0 0 0 1px var(--border);
  font-size:13px;color:var(--text-sub);
}
.tag i{color:var(--primary-light);font-size:12px}

/* ===== 玻璃卡 / 通用卡片 ===== */
.glass-card{
  background:var(--glass);
  border:1px solid var(--border);
  border-radius:var(--r-glass);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:transform .22s ease-out,border-color .22s ease,box-shadow .22s ease;
}
.glass-card:hover{
  transform:translateY(-4px);
  border-color:rgba(37,150,209,.35);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow-hover);
}
.card-media{
  border-radius:var(--r-img);overflow:hidden;
  aspect-ratio:16/10;background:#0D1420;
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out}
.glass-card:hover .card-media img{transform:scale(1.04)}

/* ===== 图文区 ===== */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:52px;align-items:center}
.split-media{
  position:relative;border-radius:var(--r-glass);overflow:hidden;
  border:1px solid var(--border);box-shadow:var(--shadow);
}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-media .media-note{
  position:absolute;left:16px;bottom:16px;
  padding:10px 16px;border-radius:14px;
  background:rgba(10,14,23,.72);backdrop-filter:blur(10px);
  box-shadow:inset 0 0 0 1px var(--border);font-size:13px;color:var(--text-sub);
}
.point-list{margin-top:28px;border-top:1px solid var(--border)}
.point-item{
  display:flex;gap:18px;align-items:flex-start;
  padding:20px 0;border-bottom:1px solid var(--border);
}
.point-num{
  flex:0 0 auto;display:grid;place-items:center;
  width:38px;height:38px;border-radius:10px;
  background:rgba(37,150,209,.14);color:var(--primary-light);
  font-size:14px;font-weight:800;letter-spacing:-.01em;
  box-shadow:inset 0 0 0 1px rgba(79,195,247,.28);
}
.point-body h3{margin-bottom:6px}
.point-body p{color:var(--text-sub);font-size:15px;line-height:1.85}

/* ===== 服务卡网格 ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{padding:26px 24px 28px;display:flex;flex-direction:column;gap:14px}
.service-card .icon-box{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  background:rgba(37,150,209,.14);color:var(--primary-light);font-size:18px;
  box-shadow:inset 0 0 0 1px rgba(79,195,247,.26);
}
.service-card p{color:var(--text-sub);font-size:15px;line-height:1.85}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--primary-light);font-size:14.5px;font-weight:600;
}
.text-link i{transition:transform .22s ease}
.text-link:hover i{transform:translateX(4px)}

/* ===== 横向数据条 ===== */
.stat-bar{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  background:var(--border);border:1px solid var(--border);
  border-radius:var(--r-card);overflow:hidden;
}
.stat-cell{
  padding:36px 26px;background:#0D1420;text-align:center;
  transition:background-color .22s ease;
}
.stat-cell:hover{background:#101A29}
.stat-value{
  font-size:clamp(34px,4vw,50px);font-weight:800;line-height:1.1;
  letter-spacing:-.01em;color:var(--primary-light);
  font-variant-numeric:tabular-nums;
}
.stat-value small{font-size:.42em;font-weight:700;color:var(--text-sub);margin-left:6px;letter-spacing:.02em}
.stat-label{margin-top:12px;color:var(--text-sub);font-size:14px}

/* ===== 步骤流程 ===== */
.step-list{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative}
.step-item{position:relative;padding-top:26px}
.step-item::before{
  content:"";position:absolute;top:12px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(79,195,247,.45),rgba(255,255,255,.08));
}
.step-dot{
  position:absolute;top:0;left:0;width:25px;height:25px;border-radius:50%;
  background:#0A0E17;box-shadow:inset 0 0 0 2px rgba(79,195,247,.5);
  display:grid;place-items:center;font-size:11px;font-weight:800;color:var(--primary-light);
}
.step-item h3{margin:8px 0 8px;font-size:17px}
.step-item p{color:var(--text-sub);font-size:14.5px;line-height:1.8}

/* ===== FAQ ===== */
.faq-list{border-top:1px solid var(--border);max-width:920px}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:68px;padding:14px 4px 14px 18px;cursor:pointer;list-style:none;
  position:relative;font-size:16.5px;font-weight:600;color:var(--text);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:3px;background:rgba(79,195,247,.55);
  transition:height .22s ease,background-color .22s ease;
}
.faq-item summary:hover{color:var(--primary-light)}
.faq-item summary:hover::before{height:30px;background:var(--primary-light)}
.faq-item summary .plus{
  flex:0 0 auto;display:grid;place-items:center;width:30px;height:30px;
  border-radius:50%;background:rgba(255,255,255,.05);
  box-shadow:inset 0 0 0 1px var(--border);
  color:var(--text-sub);font-size:13px;transition:transform .25s ease,color .2s ease;
}
.faq-item[open] summary{color:var(--primary-light)}
.faq-item[open] summary .plus{transform:rotate(45deg);color:var(--primary-light)}
.faq-answer{padding:2px 4px 22px 21px;color:var(--text-sub);font-size:15.5px;line-height:1.9}

/* ===== CTA 带 ===== */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid var(--border-accent);border-radius:20px;
  padding:52px 44px;text-align:center;
  background:linear-gradient(120deg,rgba(37,150,209,.18),rgba(176,69,95,.14)),#0C1420;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.14;mix-blend-mode:luminosity;
}
.cta-band > *{position:relative;z-index:2}
.cta-band p{margin:16px auto 0;max-width:640px;color:var(--text-sub);font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px}

/* ===== 页脚 ===== */
.site-footer{background:#080B12;border-top:1px solid var(--border);padding:64px 0 26px;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{color:var(--text-sub);font-size:14.5px;line-height:1.85;max-width:340px}
.footer-col h4{font-size:15px;font-weight:700;margin:0 0 16px;letter-spacing:.04em;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{color:var(--text-sub);font-size:14.5px}
.footer-col a:hover{color:var(--primary-light)}
.footer-contact li{display:flex;align-items:center;gap:10px;color:var(--text-sub);font-size:14.5px}
.footer-contact i{color:var(--primary-light);font-size:13px}
.footer-search{position:relative;margin-top:18px;max-width:320px}
.footer-search input{
  width:100%;height:44px;border-radius:var(--r-img);
  background:#0F1622;border:1px solid var(--border);
  padding:0 50px 0 14px;color:var(--text);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-search input::placeholder{color:var(--text-dim)}
.footer-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,195,247,.16)}
.footer-search button{
  position:absolute;right:5px;top:50%;transform:translateY(-50%);
  width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  background:rgba(37,150,209,.18);color:var(--primary-light);
  box-shadow:inset 0 0 0 1px rgba(79,195,247,.3);
}
.footer-search button:hover{background:rgba(37,150,209,.3)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
}
.footer-bottom p{color:var(--text-dim);font-size:13.5px}
.footer-bottom a{color:var(--text-sub)}
.footer-bottom a:hover{color:var(--primary-light)}

/* ===== 响应式 ===== */
@media (max-width:1150px){
  .nav-search{max-width:340px}
  .nav-link{padding:10px 10px;font-size:14px}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .split{grid-template-columns:1fr;gap:34px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .step-list{grid-template-columns:repeat(2,1fr);gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .stat-bar{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:grid}
  .header-inner{flex-wrap:wrap;min-height:auto;padding-top:12px;padding-bottom:12px;gap:12px}
  .logo{margin-right:auto}
  .nav-search{order:3;flex:1 1 100%;max-width:none;margin:0}
  .section{padding:52px 0}
  .page-hero{padding:36px 0 52px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .grid-3{grid-template-columns:1fr}
  .stat-bar{grid-template-columns:1fr}
  .step-list{grid-template-columns:1fr;gap:22px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .cta-band{padding:38px 22px}
  .hero-actions .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .section{padding:44px 0}
  .hero-sub{font-size:15.5px}
  .faq-item summary{font-size:15.5px}
  .stat-cell{padding:28px 18px}
}