/* roulang page: index */
/* ===================== 设计变量 ===================== */
:root{
  --bg:#07101C;
  --bg-alt:#0A1424;
  --surface:#0B1728;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.075);
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.16);
  --cyan:#2FE0C8;
  --cyan-dim:rgba(47,224,200,.14);
  --cyan-line:rgba(47,224,200,.32);
  --violet:#7C6CFF;
  --amber:#FFB020;
  --text:#EAF2F6;
  --text-2:#A9BAC8;
  --text-3:#6E8296;
  --danger:#FF6B6B;
  --r-xs:10px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:22px;
  --r-pill:999px;
  --sh-card:0 18px 40px -18px rgba(0,0,0,.7);
  --sh-lift:0 28px 56px -22px rgba(0,0,0,.88);
  --glow-cyan:0 12px 30px -8px rgba(47,224,200,.5);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,sans-serif;
  --mono:"DIN Alternate","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --t:.28s cubic-bezier(.4,0,.2,1);
  --pad-sec:88px;
}
/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(47,224,200,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(47,224,200,.035) 1px,transparent 1px);
  background-size:24px 24px;
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(620px 440px at 10% 4%,rgba(47,224,200,.10),transparent 72%),
    radial-gradient(560px 420px at 90% 26%,rgba(124,108,255,.09),transparent 74%),
    radial-gradient(700px 480px at 50% 100%,rgba(47,224,200,.05),transparent 76%);
}
img{max-width:100%;display:block;border:0;object-fit:cover}
a{color:inherit;text-decoration:none;transition:color var(--t)}
a:hover{color:var(--cyan)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
::selection{background:rgba(47,224,200,.28);color:#04121A}
/* ===================== 容器与布局 ===================== */
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
main{position:relative;z-index:1;display:block}
.section{padding:var(--pad-sec) 0;position:relative;z-index:1}
.section--alt{background:var(--bg-alt);border-top:1px solid rgba(255,255,255,.04);border-bottom:1px solid rgba(255,255,255,.04)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:42px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;letter-spacing:.01em}
.sec-head .sec-sub{color:var(--text-2);font-size:14.5px;margin-top:10px;max-width:720px}
.sec-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--cyan);white-space:nowrap}
.sec-link:hover{gap:12px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--cyan);
  padding:6px 12px;border-radius:var(--r-pill);
  background:rgba(47,224,200,.1);border:1px solid var(--cyan-line);
}
/* ===================== 顶部导航 ===================== */
.site-head{position:sticky;top:0;z-index:80;padding:14px 0;transition:padding var(--t)}
.site-head.is-scrolled{padding:8px 0}
.nav-card{
  display:flex;align-items:center;gap:18px;
  padding:10px 14px;border-radius:var(--r-lg);
  background:rgba(11,23,40,.78);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-card);
  transition:background var(--t),box-shadow var(--t),border-color var(--t);
}
.site-head.is-scrolled .nav-card{background:rgba(8,18,32,.94);box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-lift);border-color:var(--line-2)}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:38px;height:38px;border-radius:var(--r-sm);
  display:grid;place-items:center;font-size:16px;color:var(--cyan);
  background:linear-gradient(135deg,rgba(47,224,200,.24),rgba(124,108,255,.24));
  border:1px solid var(--cyan-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14);
}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.logo-text small{display:block;font-size:11px;font-weight:400;color:var(--text-3);letter-spacing:.16em;line-height:1.2}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-item{
  position:relative;display:flex;align-items:center;gap:8px;
  padding:9px 13px;border-radius:var(--r-sm);font-size:13px;color:var(--text-2);
  border:1px solid transparent;transition:all var(--t);white-space:nowrap;
}
.nav-item i{font-size:14px}
.nav-item:hover{color:var(--text);background:rgba(255,255,255,.05);border-color:var(--line)}
.nav-item.is-active{color:var(--cyan);background:var(--cyan-dim);border-color:var(--cyan-line)}
.nav-item.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:2px;border-radius:2px;background:var(--cyan)}
/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:var(--r-pill);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all var(--t);white-space:nowrap;
}
.btn i{font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,#2FE0C8,#25A9E0);
  color:#05121A;font-weight:700;
  box-shadow:0 10px 26px -12px rgba(47,224,200,.65);
}
.btn-primary:hover{color:#05121A;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,224,200,.4),var(--glow-cyan)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{
  background:var(--glass);border-color:var(--cyan-line);color:var(--text);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.btn-ghost:hover{color:var(--text);background:rgba(47,224,200,.12);transform:translateY(-2px);border-color:var(--cyan)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:10px 18px;font-size:13.5px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}
.nav-cta{padding:11px 20px;font-size:14px}
/* ===================== 移动端抽屉 ===================== */
.burger{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:var(--glass);color:var(--text);
  font-size:16px;place-items:center;
}
.burger:hover{border-color:var(--cyan-line);color:var(--cyan)}
.drawer{
  display:none;position:fixed;inset:0;z-index:90;
  background:rgba(6,14,26,.97);backdrop-filter:blur(18px);
  padding:22px;overflow-y:auto;
}
.drawer.is-open{display:block}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-close{width:42px;height:42px;border-radius:var(--r-sm);border:1px solid var(--line);color:var(--text);display:grid;place-items:center;font-size:17px}
.drawer-close:hover{border-color:var(--cyan-line);color:var(--cyan)}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:24px}
.drawer-card{
  padding:16px 14px;border-radius:var(--r-md);border:1px solid var(--line);
  background:var(--glass);display:flex;flex-direction:column;gap:8px;font-size:14px;color:var(--text-2);
}
.drawer-card i{font-size:18px;color:var(--cyan)}
.drawer-card.is-active{background:var(--cyan-dim);border-color:var(--cyan-line);color:var(--cyan)}
/* ===================== 首屏 Hero ===================== */
.hero{padding:56px 0 76px}
.hero-grid{display:grid;grid-template-columns:6fr 6fr;gap:52px;align-items:center}
.hero h1{
  font-size:clamp(30px,4.4vw,52px);line-height:1.22;font-weight:700;
  letter-spacing:.005em;margin:20px 0 18px;
}
.hero h1 em{font-style:normal;color:var(--cyan)}
.hero-sub{font-size:17px;color:var(--text-2);max-width:560px}
.hero-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.hero-note{margin-top:20px;font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:9px}
.hero-note i{color:var(--cyan)}
.hero-visual{position:relative}
.hero-shot{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line-2);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--sh-lift);
  background:var(--surface);
}
.hero-shot img{width:100%;height:420px;transition:transform 1s cubic-bezier(.2,.7,.3,1)}
.hero-shot::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,16,28,.16),rgba(7,16,28,.72))}
.hero-shot:hover img{transform:scale(1.04)}
.glass-stat{
  position:absolute;left:-22px;bottom:-30px;
  display:grid;grid-template-columns:repeat(3,minmax(74px,1fr));
  gap:8px;padding:16px 18px;border-radius:var(--r-md);
  background:rgba(10,20,36,.74);
  border:1px solid var(--line-2);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.1),var(--sh-card);
}
.glass-stat .stat{text-align:center;padding:0 6px}
.glass-stat .stat + .stat{border-left:1px solid var(--line)}
.glass-stat strong{display:block;font-family:var(--mono);font-size:26px;line-height:1.2;color:var(--cyan);letter-spacing:.02em}
.glass-stat span{display:block;font-size:11.5px;color:var(--text-2);line-height:1.5;margin-top:4px}
/* ===================== 价值主张条 ===================== */
.claims{display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding:26px 4px}
.claims li{
  padding:6px 22px;border-left:1px solid var(--line);
  font-size:14px;color:var(--text-2);display:flex;align-items:flex-start;gap:10px;
}
.claims li:first-child{border-left:0;padding-left:0}
.claims li i{color:var(--cyan);font-size:14px;margin-top:6px;flex:none}
.claims strong{color:var(--text);font-weight:600;display:block;font-size:14.5px}
/* ===================== 功能分组 ===================== */
.feat-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:22px}
.f-card{
  grid-column:span 3;
  display:flex;flex-direction:column;gap:14px;
  padding:26px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-card);
  transition:all var(--t);
}
.f-card--sm{grid-column:span 2}
.f-card:hover{transform:translateY(-4px);border-color:var(--cyan-line);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--sh-lift)}
.f-ico{
  width:46px;height:46px;border-radius:var(--r-sm);display:grid;place-items:center;
  font-size:19px;color:var(--cyan);
  background:linear-gradient(140deg,rgba(47,224,200,.16),rgba(124,108,255,.14));
  border:1px solid var(--cyan-line);
}
.f-card h3{font-size:20px;font-weight:700;line-height:1.4}
.f-card p{font-size:14.5px;color:var(--text-2);line-height:1.85}
.f-foot{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:var(--r-pill);
  font-size:11.5px;letter-spacing:.06em;color:var(--cyan);
  background:rgba(47,224,200,.1);border:1px solid var(--cyan-line);
}
.tag--violet{color:#B6AEFF;background:rgba(124,108,255,.12);border-color:rgba(124,108,255,.34)}
.tag--amber{color:#FFCB6B;background:rgba(255,176,32,.12);border-color:rgba(255,176,32,.34)}
/* ===================== 图文交替场景 ===================== */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:64px}
.scene:last-child{margin-bottom:0}
.scene--rev .scene-media{order:2}
.scene-media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07),var(--sh-card);background:var(--surface);
}
.scene-media img{width:100%;height:330px;transition:transform .9s cubic-bezier(.2,.7,.3,1)}
.scene-media:hover img{transform:scale(1.05)}
.scene-body h3{font-size:clamp(20px,2.2vw,26px);font-weight:700;line-height:1.4;margin-bottom:14px}
.scene-body p{color:var(--text-2);font-size:15px}
.scene-list{margin-top:20px;display:flex;flex-direction:column;gap:12px}
.scene-list li{
  display:flex;align-items:flex-start;gap:11px;font-size:14.5px;color:var(--text-2);
  padding:13px 16px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.03);border:1px solid var(--line);
}
.scene-list i{color:var(--cyan);margin-top:6px;flex:none;font-size:13px}
/* ===================== 数据条与案例 ===================== */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:40px;
  padding:24px;border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(47,224,200,.08),rgba(124,108,255,.06));
  border:1px solid var(--line);
}
.metric{text-align:center;padding:6px 10px}
.metric + .metric{border-left:1px solid var(--line)}
.metric strong{display:block;font-family:var(--mono);font-size:30px;color:var(--cyan);line-height:1.25}
.metric span{font-size:12.5px;color:var(--text-2)}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{
  border-radius:var(--r-md);overflow:hidden;background:var(--glass);
  border:1px solid var(--line);box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-card);
  transition:all var(--t);
}
.case-card:hover{transform:translateY(-4px);border-color:var(--cyan-line);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--sh-lift)}
.case-thumb{position:relative;height:170px;overflow:hidden}
.case-thumb img{width:100%;height:100%}
.case-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,16,28,0),rgba(7,16,28,.66))}
.case-name{
  position:absolute;left:14px;bottom:12px;z-index:2;
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 12px;border-radius:var(--r-pill);font-size:12.5px;
  background:rgba(7,16,28,.72);border:1px solid var(--cyan-line);color:var(--cyan);
}
.case-body{padding:20px}
.case-body h3{font-size:17px;font-weight:700;margin-bottom:9px}
.case-body p{font-size:14px;color:var(--text-2)}
/* ===================== 最新信息列表 ===================== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;border-radius:var(--r-md);overflow:hidden;
  background:var(--glass);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-card);
  transition:all var(--t);
}
.news-card:hover{transform:translateY(-4px);border-color:var(--cyan-line);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--sh-lift)}
.news-thumb{position:relative;display:block;height:168px;overflow:hidden;background:var(--surface)}
.news-thumb img{width:100%;height:100%;transition:transform .8s cubic-bezier(.2,.7,.3,1)}
.news-card:hover .news-thumb img{transform:scale(1.06)}
.news-body{padding:20px;display:flex;flex-direction:column;gap:11px;flex:1}
.news-body h3{font-size:16.5px;font-weight:700;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover .news-body h3 a{color:var(--cyan)}
.news-body p{font-size:13.5px;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;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);
}
.news-meta i{color:var(--cyan)}
.empty-state{
  padding:56px 24px;text-align:center;border-radius:var(--r-lg);
  border:1px dashed var(--line-2);background:rgba(255,255,255,.02);
}
.empty-state i{font-size:30px;color:var(--text-3);margin-bottom:14px;display:block}
.empty-state p{color:var(--text-2);font-size:14.5px;margin-bottom:18px}
/* ===================== 方案对照 ===================== */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.plan{
  position:relative;display:flex;flex-direction:column;gap:16px;
  padding:30px 26px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-card);
  transition:all var(--t);
}
.plan:hover{transform:translateY(-4px);border-color:var(--line-2)}
.plan--hot{
  border-color:var(--cyan-line);
  background:linear-gradient(160deg,rgba(47,224,200,.10),rgba(11,23,40,.5));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.1),0 22px 50px -24px rgba(47,224,200,.55);
}
.plan-flag{
  position:absolute;top:-13px;left:26px;
  padding:5px 14px;border-radius:var(--r-pill);font-size:12px;font-weight:700;
  color:#05121A;background:linear-gradient(135deg,#FFB020,#FFD06B);
  box-shadow:0 10px 22px -12px rgba(255,176,32,.8);
}
.plan h3{font-size:20px;font-weight:700}
.plan .plan-desc{font-size:13.5px;color:var(--text-2)}
.plan ul{display:flex;flex-direction:column;gap:11px;margin-top:4px}
.plan li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-2)}
.plan li i{color:var(--cyan);font-size:12px;margin-top:7px;flex:none}
.plan .btn{margin-top:auto}
/* ===================== FAQ ===================== */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;margin:0 auto}
.faq-item{
  border-radius:var(--r-md);border:1px solid var(--line);background:var(--glass);
  overflow:hidden;transition:all var(--t);
}
.faq-item:hover{border-color:var(--line-2)}
.faq-item[open]{border-color:var(--cyan-line);background:rgba(47,224,200,.05)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px 18px 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;position:relative;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:transparent;transition:background var(--t);
}
.faq-item[open] summary::before{background:var(--cyan)}
.faq-item summary i{color:var(--cyan);font-size:14px;transition:transform var(--t);flex:none}
.faq-item[open] summary i{transform:rotate(45deg)}
.faq-answer{padding:0 22px 20px 26px;color:var(--text-2);font-size:14.5px}
/* ===================== 尾部 CTA ===================== */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  padding:56px 48px;text-align:center;
  background:rgba(11,23,40,.6);border:1px solid var(--line-2);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--sh-lift);
}
.cta-band::before,.cta-band::after{content:"";position:absolute;border-radius:50%;filter:blur(70px);pointer-events:none}
.cta-band::before{width:320px;height:320px;left:-90px;top:-120px;background:rgba(47,224,200,.22)}
.cta-band::after{width:300px;height:300px;right:-100px;bottom:-140px;background:rgba(124,108,255,.2)}
.cta-band h2{font-size:clamp(22px,2.8vw,32px);font-weight:700;position:relative;z-index:1}
.cta-band p{color:var(--text-2);font-size:15px;max-width:660px;margin:16px auto 28px;position:relative;z-index:1}
.cta-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;position:relative;z-index:1}
/* ===================== 页脚 ===================== */
.site-foot{
  position:relative;z-index:1;margin-top:0;
  background:#060D18;border-top:1px solid var(--line);padding:64px 0 0;
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:44px}
.foot-brand .logo{margin-bottom:16px}
.foot-brand p{font-size:13.5px;color:var(--text-3);max-width:330px;line-height:1.9}
.foot-col h4{font-size:14px;font-weight:700;margin-bottom:16px;color:var(--text)}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col li{font-size:13.5px;color:var(--text-2)}
.foot-col a{font-size:13.5px;color:var(--text-2)}
.foot-col a:hover{color:var(--cyan)}
.foot-bottom{
  border-top:1px solid var(--line);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}
.foot-bottom span{display:inline-flex;align-items:center;gap:8px}
.foot-bottom i{color:var(--cyan)}
/* ===================== 响应式断点 ===================== */
@media (max-width:1200px){
  .hero-grid{gap:36px}
  .hero-shot img{height:380px}
  .glass-stat{left:0;bottom:-24px;padding:14px}
}
@media (max-width:992px){
  :root{--pad-sec:64px}
  .nav-links{display:none}
  .nav-cta{display:none}
  .burger{display:grid;margin-left:auto}
  .hero-grid{grid-template-columns:1fr;gap:56px}
  .hero-sub{max-width:none}
  .hero-shot img{height:320px}
  .glass-stat{position:relative;left:0;bottom:0;margin-top:-26px;margin-left:16px;margin-right:16px}
  .claims{grid-template-columns:repeat(2,1fr);gap:18px 0}
  .claims li{padding:6px 16px}
  .claims li:nth-child(odd){border-left:0;padding-left:0}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .f-card,.f-card--sm{grid-column:span 1}
  .scene{grid-template-columns:1fr;gap:28px;margin-bottom:52px}
  .scene--rev .scene-media{order:0}
  .scene-media img{height:260px}
  .metrics{grid-template-columns:repeat(2,1fr);gap:22px 0;padding:20px}
  .metric:nth-child(odd){border-left:0}
  .case-grid,.news-grid{grid-template-columns:repeat(2,1fr)}
  .plan-grid{grid-template-columns:1fr;gap:32px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .sec-head{margin-bottom:32px}
  .hero{padding:36px 0 60px}
  .hero-actions .btn{flex:1 1 auto}
  .cta-band{padding:44px 26px}
  .faq-item summary{font-size:15px;padding:16px 18px 16px 22px}
  .faq-answer{padding:0 18px 18px 22px}
}
@media (max-width:576px){
  :root{--pad-sec:56px}
  .container{padding:0 16px}
  .case-grid,.news-grid{grid-template-columns:1fr}
  .feat-grid{grid-template-columns:1fr}
  .claims{grid-template-columns:1fr;gap:14px 0}
  .claims li{border-left:0;padding-left:0}
  .metrics{grid-template-columns:1fr;gap:18px}
  .metric{border-left:0!important}
  .hero-actions .btn{width:100%}
  .glass-stat{grid-template-columns:1fr;margin-left:0;margin-right:0;gap:12px}
  .glass-stat .stat + .stat{border-left:0;border-top:1px solid var(--line);padding-top:10px}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{justify-content:flex-start}
  .drawer-grid{grid-template-columns:1fr}
}

/* roulang page: category1 */
:root{
  --bg:#07101C;
  --bg-2:#0A1424;
  --panel:#0B1728;
  --cyan:#2FE0C8;
  --cyan-deep:#25A9E0;
  --purple:#7C6CFF;
  --amber:#FFB020;
  --text:#EAF2F6;
  --text-2:#A9BAC8;
  --text-3:#6E8296;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.09);
  --line-cyan:rgba(47,224,200,.35);
  --r-xs:10px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:22px;
  --r-pill:999px;
  --sh-1:0 18px 40px -18px rgba(0,0,0,.7);
  --sh-2:0 28px 60px -20px rgba(0,0,0,.85);
  --sp-1:8px;
  --sp-2:12px;
  --sp-3:16px;
  --sp-4:24px;
  --sp-5:32px;
  --sp-6:48px;
  --sp-7:88px;
  --t:.28s cubic-bezier(.4,0,.2,1);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  background-image:
    radial-gradient(900px 420px at 12% -6%,rgba(47,224,200,.13),transparent 62%),
    radial-gradient(760px 420px at 92% 8%,rgba(124,108,255,.12),transparent 60%),
    linear-gradient(rgba(47,224,200,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(47,224,200,.04) 1px,transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
  background-attachment:fixed,fixed,scroll,scroll;
  overflow-x:hidden;
}
img{max-width:100%;display:block;object-fit:cover;background-color:#0d1a2c;}
a{color:inherit;text-decoration:none;transition:color var(--t),opacity var(--t);}
a:hover{color:var(--cyan);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(47,224,200,.3);color:#fff;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}

/* ============ 导航 ============ */
.site-head{position:sticky;top:0;z-index:80;padding:14px 0;backdrop-filter:blur(10px);background:linear-gradient(180deg,rgba(7,16,28,.92),rgba(7,16,28,.55));transition:padding var(--t),background var(--t);}
.site-head.is-shrink{padding:8px 0;background:rgba(7,16,28,.96);}
.nav-card{
  display:flex;align-items:center;gap:18px;
  padding:12px 16px;
  border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.025));
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  backdrop-filter:blur(14px);
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:38px;height:38px;display:grid;place-items:center;border-radius:var(--r-sm);
  background:linear-gradient(135deg,var(--cyan),var(--cyan-deep));
  color:#05121A;font-size:17px;box-shadow:0 8px 22px -8px rgba(47,224,200,.7);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;font-weight:700;font-size:16px;letter-spacing:.01em;}
.logo-text small{font-weight:400;font-size:11px;color:var(--text-3);letter-spacing:.08em;margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto;flex-wrap:wrap;}
.nav-item{
  display:flex;align-items:center;gap:7px;
  padding:9px 13px;border-radius:var(--r-sm);
  font-size:12px;color:var(--text-2);
  border:1px solid transparent;
  background:rgba(255,255,255,.03);
  position:relative;
}
.nav-item i{font-size:14px;color:var(--text-3);transition:color var(--t);}
.nav-item:hover{color:var(--text);border-color:var(--line);background:rgba(255,255,255,.07);}
.nav-item:hover i{color:var(--cyan);}
.nav-item.is-active{color:var(--text);background:rgba(47,224,200,.12);border-color:rgba(47,224,200,.28);}
.nav-item.is-active i{color:var(--cyan);}
.nav-item.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),rgba(47,224,200,0));
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;letter-spacing:.02em;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t),opacity var(--t);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--cyan) 0%,var(--cyan-deep) 100%);
  color:#05121A;
  box-shadow:0 10px 26px -12px rgba(47,224,200,.8);
}
.btn-primary:hover{
  color:#05121A;transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(47,224,200,.4),0 12px 30px -8px rgba(47,224,200,.55);
}
.btn-primary:active{transform:translateY(0);filter:brightness(.92);}
.btn-ghost{
  background:rgba(255,255,255,.05);color:var(--text);
  border:1px solid rgba(47,224,200,.4);
}
.btn-ghost:hover{background:rgba(47,224,200,.12);color:var(--text);transform:translateY(-2px);}
.btn-amber{background:linear-gradient(135deg,#FFC košík,#FFB020 0%,#F09512 100%);}
.btn-amber{background:linear-gradient(135deg,#FFB020 0%,#F09512 100%);color:#231402;box-shadow:0 10px 26px -12px rgba(255,176,32,.75);}
.btn-amber:hover{color:#231402;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,176,32,.45),0 14px 32px -10px rgba(255,176,32,.6);}
.nav-cta{font-size:13px;padding:11px 18px;}
.burger{display:none;width:42px;height:42px;border-radius:var(--r-sm);border:1px solid var(--line);background:rgba(255,255,255,.05);color:var(--text);font-size:16px;}
.burger:hover{color:var(--cyan);border-color:var(--line-cyan);}
.mobile-drawer{
  display:none;position:fixed;inset:0;z-index:120;
  background:rgba(5,10,18,.97);backdrop-filter:blur(16px);
  padding:24px;flex-direction:column;gap:16px;
}
.mobile-drawer.is-open{display:flex;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:42px;height:42px;border-radius:var(--r-sm);border:1px solid var(--line);background:rgba(255,255,255,.05);}
.drawer-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;}
.drawer-grid a{
  display:flex;flex-direction:column;gap:8px;padding:16px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);font-size:13px;color:var(--text-2);
}
.drawer-grid a i{font-size:18px;color:var(--cyan);}
.drawer-grid a.is-active{background:rgba(47,224,200,.12);border-color:rgba(47,224,200,.3);color:var(--text);}
.drawer-foot{margin-top:auto;}

/* ============ 通用板块 ============ */
.section{padding:var(--sp-7) 0;}
.section-alt{background:var(--bg-2);border-top:1px solid rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.05);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.sec-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;}
.sec-head p{color:var(--text-2);font-size:14px;margin-top:10px;max-width:640px;}
.sec-head .more{font-size:13px;color:var(--cyan);display:inline-flex;align-items:center;gap:6px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;color:var(--cyan);
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(47,224,200,.1);border:1px solid rgba(47,224,200,.25);
  margin-bottom:18px;
}
.eyebrow.grape{color:#B7AFFF;background:rgba(124,108,255,.12);border-color:rgba(124,108,255,.3);}

/* ============ 导语区 ============ */
.lead{padding:64px 0 var(--sp-7);}
.lead-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.lead h1{font-size:clamp(30px,4.2vw,50px);line-height:1.2;font-weight:700;letter-spacing:-.01em;}
.lead h1 em{font-style:normal;color:var(--cyan);}
.lead-sub{margin-top:20px;color:var(--text-2);font-size:17px;max-width:560px;}
.lead-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap;}
.lead-points{display:flex;gap:22px;margin-top:34px;flex-wrap:wrap;}
.lead-points li{font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:8px;}
.lead-points li i{color:var(--cyan);font-size:12px;}
.lead-visual{position:relative;}
.lead-visual .frame{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh-2);aspect-ratio:4/3;
}
.lead-visual .frame img{width:100%;height:100%;}
.lead-visual .frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,16,28,.05),rgba(7,16,28,.72));
}
.glass-card{
  position:absolute;left:-14px;bottom:-22px;width:min(300px,88%);
  padding:18px 20px;border-radius:var(--r-md);
  background:rgba(11,23,40,.72);border:1px solid var(--line);
  backdrop-filter:blur(14px);box-shadow:var(--sh-1);
}
.glass-card .row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.08);}
.glass-card .row:last-child{border-bottom:0;padding-bottom:0;}
.glass-card .row strong{font-family:var(--mono);font-size:19px;color:var(--cyan);}
.glass-card .row span{font-size:12px;color:var(--text-3);}

/* ============ 不等宽卡片区 ============ */
.card-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:20px;}
.entry-card{
  display:flex;flex-direction:column;
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.entry-card:hover{transform:translateY(-3px);border-color:var(--line-cyan);box-shadow:var(--sh-2);}
.entry-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;}
.entry-card .thumb img{width:100%;height:100%;transition:transform .5s ease;}
.entry-card:hover .thumb img{transform:scale(1.05);}
.entry-card .thumb .badge{
  position:absolute;top:12px;left:12px;
  font-size:11px;letter-spacing:.08em;padding:4px 10px;border-radius:var(--r-pill);
  background:rgba(7,16,28,.72);color:var(--cyan);border:1px solid rgba(47,224,200,.3);
  backdrop-filter:blur(6px);
}
.entry-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.entry-card h3{font-size:19px;line-height:1.4;}
.entry-card p{font-size:14px;color:var(--text-2);}
.entry-card .cell-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid rgba(255,255,255,.07);
  display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--text-3);
}
.entry-card .cell-foot i{color:var(--cyan);}
.entry-card.wide{grid-column:span 5;}
.entry-card.mid{grid-column:span 4;}
.entry-card.small{grid-column:span 3;}
.entry-card.half{grid-column:span 6;}
.entry-card.tall .thumb{aspect-ratio:16/10;}
.entry-card .kicker{font-size:12px;color:var(--purple);letter-spacing:.1em;}

/* ============ 流程 ============ */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step;}
.flow-item{
  position:relative;padding:26px 22px 24px;border-radius:var(--r-md);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  border:1px solid var(--line);
  transition:border-color var(--t),transform var(--t);
}
.flow-item:hover{border-color:var(--line-cyan);transform:translateY(-2px);}
.flow-item::before{
  counter-increment:step;content:"0" counter(step);
  font-family:var(--mono);font-size:13px;color:var(--cyan);
  display:inline-block;margin-bottom:14px;letter-spacing:.12em;
}
.flow-item h3{font-size:17px;margin-bottom:10px;}
.flow-item p{font-size:14px;color:var(--text-2);}

/* ============ 要点清单 ============ */
.check-panel{
  padding:36px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);box-shadow:var(--sh-1);
  display:grid;grid-template-columns:1fr 1fr;gap:28px 40px;
}
.check-panel .col-title{font-size:13px;letter-spacing:.1em;color:var(--cyan);margin-bottom:16px;display:flex;align-items:center;gap:8px;}
.check-item{display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.08);}
.check-item:last-child{border-bottom:0;}
.check-item i{color:var(--cyan);font-size:14px;margin-top:6px;}
.check-item strong{display:block;font-size:15px;font-weight:600;margin-bottom:2px;}
.check-item span{font-size:13px;color:var(--text-3);}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--glass);margin-bottom:14px;overflow:hidden;
  transition:border-color var(--t),background var(--t);
}
.faq-item[open]{border-color:var(--line-cyan);background:rgba(47,224,200,.05);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;
  display:flex;align-items:center;gap:16px;
  font-size:16px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";width:3px;height:20px;border-radius:2px;background:rgba(255,255,255,.16);flex-shrink:0;transition:background var(--t);
}
.faq-item[open] summary::before{background:var(--cyan);}
.faq-item summary .plus{margin-left:auto;color:var(--text-3);font-size:14px;transition:transform var(--t);}
.faq-item[open] summary .plus{transform:rotate(45deg);color:var(--cyan);}
.faq-item .answer{padding:0 24px 22px 43px;color:var(--text-2);font-size:14.5px;}

/* ============ CTA ============ */
.cta-band{padding:0 0 var(--sp-7);}
.cta-card{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(47,224,200,.14),rgba(124,108,255,.12) 55%,rgba(255,176,32,.1));
  padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--sh-2);
}
.cta-card::before{
  content:"";position:absolute;width:420px;height:420px;right:-120px;top:-180px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,224,200,.32),transparent 68%);pointer-events:none;
}
.cta-card h2{font-size:clamp(22px,2.4vw,30px);position:relative;}
.cta-card p{color:var(--text-2);font-size:14.5px;margin-top:12px;max-width:560px;position:relative;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;}

/* ============ 页脚 ============ */
.site-foot{background:#050D17;border-top:1px solid rgba(255,255,255,.07);padding:60px 0 26px;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.foot-brand p{font-size:13.5px;color:var(--text-3);margin-top:16px;max-width:320px;line-height:1.85;}
.foot-col h4{font-size:14px;margin-bottom:16px;color:var(--text);}
.foot-col ul li{margin-bottom:10px;font-size:13.5px;color:var(--text-3);}
.foot-col ul li a{color:var(--text-3);}
.foot-col ul li a:hover{color:var(--cyan);}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.07);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .nav-links{gap:6px;}
  .nav-item{padding:8px 10px;font-size:11.5px;}
  .entry-card.wide{grid-column:span 6;}
  .entry-card.mid{grid-column:span 6;}
  .entry-card.small{grid-column:span 6;}
}
@media (max-width:992px){
  :root{--sp-7:64px;}
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .burger{display:grid;place-items:center;margin-left:auto;}
  .lead-grid{grid-template-columns:1fr;gap:52px;}
  .lead-visual .frame{aspect-ratio:16/9;}
  .glass-card{position:relative;left:0;bottom:0;width:100%;margin-top:-28px;}
  .flow{grid-template-columns:repeat(2,1fr);}
  .check-panel{grid-template-columns:1fr;padding:28px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .entry-card.half{grid-column:span 12;}
  .cta-card{padding:40px 32px;}
}
@media (max-width:576px){
  :root{--sp-7:56px;}
  .container{padding:0 16px;}
  .lead{padding:36px 0 var(--sp-7);}
  .entry-card.wide,.entry-card.mid,.entry-card.small{grid-column:span 12;}
  .flow{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;}
  .btn{width:100%;}
  .lead-actions .btn,.cta-actions .btn{width:100%;}
  .nav-cta{width:auto;}
  .sec-head{align-items:flex-start;}
  .glass-card{margin-top:0;}
  .lead-visual .frame{aspect-ratio:4/3;}
  .cta-card{padding:32px 22px;}
}

/* roulang page: article */
:root{
  --bg:#07101C;
  --bg-alt:#0A1424;
  --bg-soft:#0B1728;
  --card:rgba(255,255,255,.045);
  --card-strong:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.09);
  --line-soft:rgba(255,255,255,.06);
  --cyan:#2FE0C8;
  --cyan-dim:rgba(47,224,200,.35);
  --cyan-soft:rgba(47,224,200,.12);
  --violet:#7C6CFF;
  --amber:#FFB020;
  --txt:#EAF2F6;
  --txt-2:#A9BAC8;
  --txt-3:#6E8296;
  --danger:#FF6B6B;
  --r-xs:10px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:22px;
  --r-pill:999px;
  --sh-card:0 18px 40px -18px rgba(0,0,0,.7);
  --sh-hover:0 26px 56px -20px rgba(0,0,0,.82);
  --sp-1:8px;
  --sp-2:12px;
  --sp-3:16px;
  --sp-4:20px;
  --sp-5:28px;
  --sp-6:40px;
  --sp-7:64px;
  --sp-8:88px;
  --ease:.28s cubic-bezier(.22,.68,.36,1);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--txt);
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 520px at 12% -6%,rgba(47,224,200,.16),transparent 62%),
    radial-gradient(760px 460px at 92% 8%,rgba(124,108,255,.14),transparent 66%),
    linear-gradient(rgba(47,224,200,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(47,224,200,.04) 1px,transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
  background-attachment:fixed,fixed,scroll,scroll;
  overflow-x:hidden;
}
img{max-width:100%;display:block;object-fit:cover;background:#0B1728}
a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease)}
a:hover{color:var(--cyan)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:.01em}
p{margin:0}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font-family:inherit;font-size:100%}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px}
::selection{background:rgba(47,224,200,.28);color:#fff}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-head{
  position:sticky;top:0;z-index:80;
  padding:16px 0 10px;
  background:linear-gradient(180deg,rgba(7,16,28,.92),rgba(7,16,28,.55) 70%,rgba(7,16,28,0));
  backdrop-filter:blur(10px);
  transition:padding var(--ease);
}
.site-head.is-scrolled{padding:10px 0 6px}
.nav-card{
  display:flex;align-items:center;gap:18px;
  padding:10px 14px;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:rgba(11,23,40,.78);
  box-shadow:var(--sh-card),inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter:blur(14px);
  transition:background var(--ease),box-shadow var(--ease),padding var(--ease);
}
.site-head.is-scrolled .nav-card{background:rgba(9,19,33,.94);box-shadow:var(--sh-hover),inset 0 1px 0 rgba(255,255,255,.06)}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;flex-shrink:0;
  display:grid;place-items:center;
  border-radius:var(--r-sm);
  background:linear-gradient(135deg,rgba(47,224,200,.9),rgba(37,169,224,.85));
  color:#05121A;font-size:17px;
  box-shadow:0 10px 24px -10px rgba(47,224,200,.6);
}
.logo-text{display:flex;flex-direction:column;font-size:16px;font-weight:700;line-height:1.15;color:var(--txt);letter-spacing:.01em}
.logo-text small{font-size:11px;font-weight:500;color:var(--txt-3);letter-spacing:.14em;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-item{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 13px;
  font-size:13px;color:var(--txt-2);
  border:1px solid transparent;border-radius:var(--r-sm);
  white-space:nowrap;
  transition:all var(--ease);
}
.nav-item i{font-size:14px;color:var(--txt-3);transition:color var(--ease)}
.nav-item:hover{color:var(--txt);background:var(--cyan-soft);border-color:rgba(47,224,200,.28)}
.nav-item:hover i{color:var(--cyan)}
.nav-item.is-active{
  color:var(--txt);
  background:var(--cyan-soft);
  border-color:rgba(47,224,200,.3);
  box-shadow:inset 0 -2px 0 0 var(--cyan);
}
.nav-item.is-active i{color:var(--cyan)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  font-size:14px;font-weight:600;letter-spacing:.02em;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  white-space:nowrap;
  transition:all var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#2FE0C8,#25A9E0);
  color:#05121A;
  box-shadow:0 12px 30px -14px rgba(47,224,200,.7);
}
.btn-primary:hover{
  transform:translateY(-2px);
  color:#05121A;
  box-shadow:0 0 0 1px rgba(47,224,200,.4),0 12px 30px -8px rgba(47,224,200,.55);
}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{
  background:rgba(255,255,255,.05);
  border-color:rgba(47,224,200,.35);
  color:var(--txt);
}
.btn-ghost:hover{background:var(--cyan-soft);color:var(--txt);transform:translateY(-2px)}
.btn-amber{
  background:linear-gradient(135deg,#FFB020,#F59023);
  color:#231400;
  box-shadow:0 14px 32px -14px rgba(255,176,32,.65);
}
.btn-amber:hover{transform:translateY(-2px);color:#231400;box-shadow:0 0 0 1px rgba(255,176,32,.45),0 14px 34px -10px rgba(255,176,32,.6)}
.btn-sm{padding:9px 16px;font-size:13px}
.nav-cta{margin-left:4px;padding:11px 20px;font-size:13.5px}
.burger{
  display:none;margin-left:auto;
  width:42px;height:42px;place-items:center;
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:rgba(255,255,255,.05);color:var(--txt);font-size:16px;
}
.burger:hover{border-color:var(--cyan-dim);color:var(--cyan)}

/* ============ 通用板块 ============ */
.section{padding:var(--sp-8) 0}
.section-alt{background:var(--bg-alt)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px}
.sec-title{font-size:clamp(22px,2.6vw,32px)}
.sec-title span{color:var(--cyan)}
.sec-sub{margin-top:10px;font-size:14.5px;color:var(--txt-2);max-width:620px}
.link-more{font-size:14px;color:var(--cyan);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.link-more:hover{gap:10px}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px;
  font-size:12px;letter-spacing:.08em;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--txt-2);
}
.badge-cyan{border-color:rgba(47,224,200,.35);background:var(--cyan-soft);color:#9DF3E4}
.badge-violet{border-color:rgba(124,108,255,.4);background:rgba(124,108,255,.14);color:#C3BCFF}
.badge-amber{border-color:rgba(255,176,32,.4);background:rgba(255,176,32,.14);color:#FFD387}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}

/* ============ 面包屑 ============ */
.crumb-bar{padding:26px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--txt-3)}
.crumb a{color:var(--txt-2)}
.crumb a:hover{color:var(--cyan)}
.crumb i{font-size:10px;color:var(--txt-3)}
.crumb .current{color:var(--txt);max-width:min(560px,70vw);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头部 ============ */
.article-head{
  position:relative;
  margin-top:20px;
  padding:38px 38px 34px;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:
    linear-gradient(135deg,rgba(47,224,200,.09),rgba(124,108,255,.06) 55%,rgba(255,255,255,.02)),
    rgba(11,23,40,.72);
  box-shadow:var(--sh-card),inset 0 1px 0 rgba(255,255,255,.06);
  overflow:hidden;
}
.article-head::after{
  content:"";position:absolute;right:-90px;top:-110px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(47,224,200,.22),transparent 68%);
  filter:blur(12px);pointer-events:none;
}
.article-head .badge{margin-bottom:18px}
.article-h1{
  font-size:clamp(26px,3.6vw,42px);
  line-height:1.28;
  max-width:900px;
  position:relative;z-index:1;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  margin-top:24px;padding-top:20px;
  border-top:1px solid var(--line-soft);
  font-size:13.5px;color:var(--txt-3);
  position:relative;z-index:1;
}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--cyan);font-size:13px}
.article-meta a{color:var(--txt-2)}
.article-meta a:hover{color:var(--cyan)}

/* ============ 正文 ============ */
.read-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:38px;
  align-items:start;
  margin-top:38px;
}
.prose-wrap{
  padding:38px 42px;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:rgba(11,23,40,.62);
  box-shadow:var(--sh-card);
  backdrop-filter:blur(10px);
}
.prose{max-width:760px;font-size:16.5px;line-height:1.9;color:#D8E4EC}
.prose>*+*{margin-top:1.15em}
.prose p{color:#CEDCE6}
.prose h2{
  font-size:clamp(20px,2.2vw,26px);
  color:var(--txt);
  margin-top:1.9em;padding-left:14px;
  border-left:3px solid var(--cyan);
  line-height:1.4;
}
.prose h3{font-size:19px;color:var(--txt);margin-top:1.6em}
.prose h2+p,.prose h3+p{margin-top:.7em}
.prose ul,.prose ol{padding-left:2px;display:grid;gap:10px}
.prose ul li,.prose ol li{position:relative;padding-left:24px;color:#CEDCE6}
.prose ul li::before{
  content:"";position:absolute;left:4px;top:.66em;
  width:7px;height:7px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 0 4px rgba(47,224,200,.14);
}
.prose ol{counter-reset:item}
.prose ol li::before{
  counter-increment:item;content:counter(item);
  position:absolute;left:0;top:.28em;
  width:18px;height:18px;border-radius:50%;
  display:grid;place-items:center;
  font-size:11px;font-weight:700;font-family:var(--mono);
  background:var(--cyan-soft);color:var(--cyan);
  border:1px solid rgba(47,224,200,.35);
}
.prose blockquote{
  margin:1.5em 0;padding:18px 22px;
  border-left:3px solid var(--violet);
  border-radius:0 var(--r-md) var(--r-md) 0;
  background:rgba(124,108,255,.09);
  color:#D6D2FF;font-size:15.5px;
}
.prose blockquote p{color:inherit}
.prose img{width:100%;border-radius:var(--r-md);margin:1.5em 0;border:1px solid var(--line)}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(47,224,200,.35)}
.prose a:hover{border-color:var(--cyan)}
.prose code{
  font-family:var(--mono);font-size:14px;
  padding:2px 7px;border-radius:6px;
  background:rgba(47,224,200,.1);color:#9DF3E4;
  border:1px solid rgba(47,224,200,.18);
}
.prose pre{
  padding:18px 20px;border-radius:var(--r-md);
  background:#050C16;border:1px solid var(--line);
  overflow-x:auto;line-height:1.65;
}
.prose pre code{background:none;border:0;padding:0;color:#B9E9E0}
.prose table{
  width:100%;border-collapse:collapse;display:block;overflow-x:auto;
  border:1px solid var(--line);border-radius:var(--r-sm);
  font-size:14.5px;
}
.prose table th,.prose table td{
  padding:11px 14px;border-bottom:1px solid var(--line-soft);
  text-align:left;white-space:nowrap;
}
.prose table th{background:rgba(47,224,200,.08);color:var(--txt);font-weight:600}
.prose table tr:last-child td{border-bottom:0}
.prose hr{border:0;height:1px;background:var(--line);margin:2em 0}

.empty-state{
  padding:56px 28px;text-align:center;
  border:1px dashed rgba(255,255,255,.16);
  border-radius:var(--r-md);
  background:rgba(255,255,255,.02);
}
.empty-state i{font-size:34px;color:var(--txt-3)}
.empty-state h3{margin-top:16px;font-size:19px}
.empty-state p{margin-top:10px;color:var(--txt-2);font-size:14.5px}
.empty-state .btn{margin-top:22px}

/* ============ 侧栏 ============ */
.side-stack{display:grid;gap:22px;position:sticky;top:112px}
.side-card{
  padding:22px;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:var(--card);
  box-shadow:var(--sh-card);
  backdrop-filter:blur(12px);
}
.side-card h3{font-size:15px;letter-spacing:.04em;display:flex;align-items:center;gap:8px}
.side-card h3 i{color:var(--cyan);font-size:14px}
.side-list{margin-top:16px;display:grid;gap:12px}
.side-list li{font-size:13.8px;color:var(--txt-2);display:flex;gap:9px;line-height:1.7}
.side-list li i{color:var(--cyan);font-size:11px;margin-top:7px;flex-shrink:0}
.side-card .btn{width:100%;margin-top:18px}
.side-note{font-size:12.5px;color:var(--txt-3);margin-top:12px;line-height:1.7}

/* ============ 相关推荐 ============ */
.mini-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.mini-card{
  display:flex;flex-direction:column;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--card);
  box-shadow:var(--sh-card);
  overflow:hidden;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:var(--cyan-dim)}
.mini-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0B1728}
.mini-thumb img{width:100%;height:100%;transition:transform .5s var(--ease)}
.mini-card:hover .mini-thumb img{transform:scale(1.05)}
.mini-thumb .badge{position:absolute;left:12px;top:12px;background:rgba(7,16,28,.82);backdrop-filter:blur(6px)}
.mini-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.mini-body h3{font-size:16.5px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-card:hover .mini-body h3{color:var(--cyan)}
.mini-body p{font-size:13.6px;color:var(--txt-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-foot{margin-top:auto;padding-top:12px;border-top:1px solid var(--line-soft);display:flex;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--txt-3)}
.mini-foot i{color:var(--cyan);font-size:12px}

/* ============ 访问提示 ============ */
.tip-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.tip-card{
  padding:26px 24px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--card);
  box-shadow:var(--sh-card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.tip-card:hover{transform:translateY(-2px);border-color:var(--cyan-dim);box-shadow:var(--sh-hover)}
.tip-icon{
  width:44px;height:44px;border-radius:var(--r-xs);
  display:grid;place-items:center;font-size:17px;color:var(--cyan);
  background:var(--cyan-soft);border:1px solid rgba(47,224,200,.24);
}
.tip-card h3{margin-top:16px;font-size:17px}
.tip-card p{margin-top:10px;font-size:14.2px;color:var(--txt-2)}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px;max-width:900px}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--card);
  overflow:hidden;
  transition:border-color var(--ease),background var(--ease);
}
.faq-item[open]{border-color:rgba(47,224,200,.35);background:rgba(47,224,200,.05)}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:18px 22px 18px 24px;
  font-size:16px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  border-left:3px solid transparent;
  transition:all var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--cyan)}
.faq-item[open] summary{border-left-color:var(--cyan);color:var(--txt)}
.faq-item summary i{font-size:13px;color:var(--txt-3);transition:transform var(--ease)}
.faq-item[open] summary i{transform:rotate(45deg);color:var(--cyan)}
.faq-body{padding:0 24px 20px;font-size:14.6px;color:var(--txt-2);line-height:1.85}

/* ============ 尾部引导条 ============ */
.cta-band{
  position:relative;
  padding:44px 46px;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:
    linear-gradient(120deg,rgba(47,224,200,.12),rgba(124,108,255,.08) 60%,rgba(255,255,255,.03)),
    rgba(11,23,40,.8);
  box-shadow:var(--sh-card),inset 0 1px 0 rgba(255,255,255,.07);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:-80px;bottom:-140px;width:340px;height:340px;
  background:radial-gradient(circle,rgba(255,176,32,.18),transparent 66%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(21px,2.5vw,28px);position:relative;z-index:1}
.cta-band p{margin-top:10px;font-size:14.6px;color:var(--txt-2);max-width:620px;position:relative;z-index:1}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1}

/* ============ 页脚 ============ */
.site-foot{
  margin-top:var(--sp-8);
  padding:64px 0 26px;
  background:linear-gradient(180deg,rgba(10,20,36,0),rgba(10,20,36,.9));
  border-top:1px solid var(--line-soft);
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:38px}
.foot-brand p{margin-top:16px;font-size:14px;color:var(--txt-2);line-height:1.85;max-width:340px}
.foot-col h4{font-size:14.5px;letter-spacing:.04em;color:var(--txt);margin-bottom:16px}
.foot-col ul{display:grid;gap:11px}
.foot-col a,.foot-col li{font-size:13.8px;color:var(--txt-2)}
.foot-col a:hover{color:var(--cyan)}
.foot-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--txt-3);
}
.foot-bottom i{margin-right:6px}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .read-layout{grid-template-columns:minmax(0,1fr) 270px;gap:30px}
}
@media (max-width:992px){
  .section{padding:64px 0}
  .nav-cta{display:none}
  .burger{display:grid}
  .nav-links{
    position:fixed;left:16px;right:16px;top:86px;
    flex-direction:column;align-items:stretch;gap:10px;
    padding:18px;
    border:1px solid var(--line);border-radius:var(--r-lg);
    background:rgba(8,17,30,.98);
    box-shadow:var(--sh-hover);backdrop-filter:blur(16px);
    opacity:0;visibility:hidden;transform:translateY(-12px);
    transition:all var(--ease);
    max-height:calc(100vh - 120px);overflow-y:auto;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-item{padding:13px 16px;font-size:14px;border-radius:var(--r-sm);background:rgba(255,255,255,.04)}
  .nav-links .nav-cta{display:inline-flex;margin:6px 0 0;width:100%}
  .read-layout{grid-template-columns:minmax(0,1fr)}
  .side-stack{position:static}
  .mini-grid,.tip-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:768px){
  .article-head{padding:28px 22px 26px;border-radius:var(--r-md)}
  .prose-wrap{padding:26px 22px;border-radius:var(--r-md)}
  .prose{font-size:16px}
  .cta-band{padding:30px 24px;border-radius:var(--r-md)}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:576px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .mini-grid,.tip-grid{grid-template-columns:minmax(0,1fr)}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .article-meta{gap:10px 16px;font-size:12.8px}
  .btn{width:100%}
  .cta-actions{width:100%}
  .logo-text{font-size:15px}
  .nav-links{top:80px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --bg:#07101C;
  --bg-2:#0B1728;
  --bg-3:#0A1424;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.16);
  --cyan:#2FE0C8;
  --cyan-2:#25A9E0;
  --purple:#7C6CFF;
  --amber:#FFB020;
  --danger:#FF6B6B;
  --text:#EAF2F6;
  --text-2:#A9BAC8;
  --text-3:#6E8296;
  --r-1:10px;
  --r-2:16px;
  --r-3:22px;
  --r-4:999px;
  --sh-1:0 18px 40px -18px rgba(0,0,0,.7);
  --sh-2:0 26px 60px -20px rgba(0,0,0,.85);
  --t:.28s cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(47,224,200,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(47,224,200,.045) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
  z-index:0;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(560px 420px at 12% -6%,rgba(47,224,200,.14),transparent 70%),
    radial-gradient(620px 480px at 92% 12%,rgba(124,108,255,.12),transparent 72%);
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;}
p{margin:0;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:8px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}

/* ---------- 顶部导航 ---------- */
.site-head{
  position:sticky;
  top:0;
  z-index:120;
  padding:14px 0;
  transition:padding var(--t),background var(--t);
}
.site-head.is-scrolled{
  padding:6px 0;
  background:rgba(7,16,28,.85);
  backdrop-filter:blur(10px);
}
.nav-card{
  display:flex;
  align-items:center;
  gap:16px;
  padding:10px 16px;
  border-radius:var(--r-3);
  background:rgba(11,23,40,.74);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  box-shadow:var(--sh-1);
}
.logo{display:flex;align-items:center;gap:10px;flex:none;}
.logo-mark{
  width:38px;
  height:38px;
  border-radius:12px;
  display:grid;
  place-items:center;
  font-size:16px;
  color:#05121A;
  background:linear-gradient(135deg,var(--cyan),var(--cyan-2));
  box-shadow:0 10px 24px -10px rgba(47,224,200,.75);
}
.logo-text{
  display:flex;
  flex-direction:column;
  font-size:16px;
  font-weight:700;
  line-height:1.15;
  letter-spacing:.01em;
}
.logo-text small{font-size:11px;font-weight:400;color:var(--text-3);letter-spacing:.08em;}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto;}
.nav-item{
  display:flex;
  align-items:center;
  gap:7px;
  padding:9px 13px;
  border-radius:12px;
  font-size:13px;
  color:var(--text-2);
  border:1px solid transparent;
  transition:color var(--t),background var(--t),border-color var(--t),transform var(--t);
  position:relative;
  white-space:nowrap;
}
.nav-item i{font-size:13px;color:var(--text-3);transition:color var(--t);}
.nav-item:hover{color:var(--text);background:rgba(255,255,255,.05);border-color:var(--line);transform:translateY(-1px);}
.nav-item:hover i{color:var(--cyan);}
.nav-item.is-active{color:var(--cyan);background:rgba(47,224,200,.12);border-color:rgba(47,224,200,.22);}
.nav-item.is-active i{color:var(--cyan);}
.nav-item.is-active::after{
  content:"";
  position:absolute;
  left:13px;
  right:13px;
  bottom:3px;
  height:2px;
  border-radius:2px;
  background:var(--cyan);
}
.nav-mobile-cta{display:none;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-4);
  font-size:14px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t);
  white-space:nowrap;
}
.btn-primary{
  color:#05121A;
  background:linear-gradient(135deg,var(--cyan),var(--cyan-2));
  box-shadow:0 12px 28px -14px rgba(47,224,200,.85);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(47,224,200,.4),0 12px 30px -8px rgba(47,224,200,.55);
}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-ghost{
  color:var(--text);
  background:rgba(255,255,255,.05);
  border-color:rgba(47,224,200,.45);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{background:rgba(47,224,200,.12);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.nav-cta{padding:10px 18px;font-size:13px;}
.burger{
  display:none;
  width:42px;
  height:42px;
  border-radius:12px;
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
  color:var(--text);
  font-size:16px;
  cursor:pointer;
  place-items:center;
  transition:background var(--t),border-color var(--t);
}
.burger:hover{background:rgba(47,224,200,.14);border-color:rgba(47,224,200,.35);}

/* ---------- 分类首屏 ---------- */
.cat-hero{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  padding:56px 0 72px;
}
.cat-hero-bg{
  position:absolute;
  inset:0;
  z-index:-2;
  background-size:cover;
  background-position:center;
  transform:scale(1.02);
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background:
    linear-gradient(180deg,rgba(7,16,28,.5) 0%,rgba(7,16,28,.86) 58%,rgba(7,16,28,1) 100%),
    linear-gradient(96deg,rgba(7,16,28,.94) 0%,rgba(7,16,28,.42) 62%,rgba(7,16,28,.7) 100%);
}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:22px;
}
.crumbs a{color:var(--text-2);transition:color var(--t);}
.crumbs a:hover{color:var(--cyan);}
.crumbs span.dot{opacity:.5;}
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-4);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--cyan);
  background:rgba(47,224,200,.1);
  border:1px solid rgba(47,224,200,.28);
}
.badge i{font-size:11px;}
.cat-hero h1{
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.2;
  font-weight:700;
  margin:20px 0 16px;
  max-width:15em;
  letter-spacing:.01em;
}
.cat-hero .lead{
  font-size:17px;
  line-height:1.85;
  color:var(--text-2);
  max-width:40em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
  margin-top:46px;
}
.stat-strip li{
  padding:18px 20px;
  border-radius:var(--r-2);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  box-shadow:var(--sh-1);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.stat-strip li:hover{transform:translateY(-2px);border-color:rgba(47,224,200,.35);box-shadow:var(--sh-2);}
.stat-strip b{
  display:block;
  font-size:22px;
  font-weight:700;
  color:var(--cyan);
  line-height:1.3;
  font-variant-numeric:tabular-nums;
}
.stat-strip span{font-size:13px;color:var(--text-3);}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;position:relative;}
.section.alt{background:var(--bg-3);}
.section-head{max-width:56em;margin-bottom:40px;}
.section-head h2{
  font-size:clamp(24px,3vw,34px);
  margin:14px 0 12px;
  letter-spacing:.01em;
}
.section-head p{color:var(--text-2);font-size:15px;}
.eyebrow{
  font-size:12px;
  letter-spacing:.16em;
  color:var(--cyan);
  text-transform:uppercase;
}

/* ---------- 三行列表卡 ---------- */
.row-list{display:grid;gap:16px;}
.row-card{
  display:grid;
  grid-template-columns:190px 1fr;
  gap:22px;
  align-items:center;
  padding:18px;
  border-radius:var(--r-3);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  box-shadow:var(--sh-1);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t),background var(--t);
}
.row-card.is-wide{grid-template-columns:300px 1fr;}
.row-card:hover{
  transform:translateY(-2px);
  border-color:rgba(47,224,200,.35);
  background:var(--glass-2);
  box-shadow:var(--sh-2);
}
.row-thumb{
  border-radius:var(--r-2);
  overflow:hidden;
  aspect-ratio:4/3;
  background:var(--bg-2);
  border:1px solid var(--line);
}
.row-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.row-card:hover .row-thumb img{transform:scale(1.04);}
.row-body h3{font-size:20px;margin-bottom:8px;}
.row-body p{color:var(--text-2);font-size:15px;}
.row-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:12px;
  margin-top:14px;
  padding-top:14px;
  border-top:1px solid var(--line);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:var(--r-4);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--cyan);
  background:rgba(47,224,200,.1);
  border:1px solid rgba(47,224,200,.24);
}
.tag.tag-purple{color:#BDB6FF;background:rgba(124,108,255,.12);border-color:rgba(124,108,255,.3);}
.tag.tag-amber{color:#FFD28A;background:rgba(255,176,32,.12);border-color:rgba(255,176,32,.3);}
.row-link{margin-left:auto;font-size:13px;color:var(--text-3);display:inline-flex;align-items:center;gap:6px;transition:color var(--t),gap var(--t);}
.row-card:hover .row-link{color:var(--cyan);gap:10px;}

/* ---------- 要点清单 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 20px;}
.check-grid li{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:18px 20px;
  border-radius:var(--r-2);
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  font-size:15px;
  color:var(--text-2);
  transition:border-color var(--t),background var(--t),transform var(--t);
}
.check-grid li:hover{border-color:rgba(47,224,200,.3);background:rgba(47,224,200,.05);transform:translateY(-2px);}
.check-grid strong{display:block;color:var(--text);font-size:15px;margin-bottom:2px;}
.check-icon{
  flex:none;
  width:26px;
  height:26px;
  border-radius:9px;
  display:grid;
  place-items:center;
  font-size:12px;
  color:#05121A;
  background:linear-gradient(135deg,var(--cyan),var(--cyan-2));
  margin-top:3px;
}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  border-radius:var(--r-2);
  background:var(--glass);
  border:1px solid var(--line);
  overflow:hidden;
  transition:border-color var(--t),background var(--t);
}
.faq-item[open]{
  border-color:rgba(47,224,200,.35);
  background:var(--glass-2);
  box-shadow:inset 3px 0 0 var(--cyan);
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  font-size:16px;
  font-weight:600;
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary i{color:var(--text-3);font-size:13px;transition:transform var(--t),color var(--t);}
.faq-item[open] summary{color:var(--cyan);}
.faq-item[open] summary i{transform:rotate(180deg);color:var(--cyan);}
.faq-body{padding:0 22px 20px;color:var(--text-2);font-size:15px;}

/* ---------- 尾部 CTA ---------- */
.cta-wrap{padding:0 0 88px;}
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-3);
  border:1px solid rgba(47,224,200,.25);
  background:var(--glass);
  backdrop-filter:blur(14px);
  box-shadow:var(--sh-1);
  padding:52px 40px;
  text-align:center;
}
.cta-band::before{
  content:"";
  position:absolute;
  width:460px;
  height:460px;
  top:-190px;
  right:-140px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(47,224,200,.3),transparent 70%);
  filter:blur(18px);
  pointer-events:none;
}
.cta-band::after{
  content:"";
  position:absolute;
  width:380px;
  height:380px;
  bottom:-200px;
  left:-120px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(124,108,255,.26),transparent 70%);
  filter:blur(18px);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(22px,3vw,32px);margin-bottom:14px;position:relative;}
.cta-band p{color:var(--text-2);font-size:15px;max-width:40em;margin:0 auto;position:relative;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:28px;position:relative;}

/* ---------- 页脚 ---------- */
.site-foot{
  background:#050C15;
  border-top:1px solid var(--line);
  padding:60px 0 24px;
  position:relative;
  z-index:1;
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;}
.foot-brand .logo{margin-bottom:18px;}
.foot-brand p{color:var(--text-3);font-size:14px;max-width:34em;}
.foot-col h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:.06em;}
.foot-col ul{display:grid;gap:10px;}
.foot-col a,.foot-col li{color:var(--text-3);font-size:14px;transition:color var(--t);}
.foot-col a:hover{color:var(--cyan);}
.foot-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.foot-bottom i{font-size:12px;}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .nav-item{padding:8px 11px;font-size:12.5px;}
}
@media (max-width:992px){
  .nav-links{
    position:fixed;
    inset:0;
    z-index:110;
    flex-direction:column;
    align-items:stretch;
    gap:12px;
    padding:96px 24px 40px;
    margin:0;
    background:rgba(7,16,28,.97);
    backdrop-filter:blur(18px);
    transform:translateY(-100%);
    opacity:0;
    pointer-events:none;
    overflow-y:auto;
    transition:transform .35s cubic-bezier(.2,.7,.3,1),opacity .3s ease;
  }
  .nav-links.is-open{transform:translateY(0);opacity:1;pointer-events:auto;}
  .nav-item{
    padding:16px 18px;
    font-size:15px;
    background:rgba(255,255,255,.04);
    border:1px solid var(--line);
    border-radius:var(--r-2);
    justify-content:flex-start;
  }
  .nav-item.is-active::after{left:18px;right:18px;bottom:8px;}
  .nav-mobile-cta{display:block;margin-top:8px;}
  .nav-mobile-cta .btn{width:100%;}
  .nav-cta{display:none;}
  .burger{display:grid;margin-left:auto;}
  .section{padding:64px 0;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .row-card,.row-card.is-wide{grid-template-columns:150px 1fr;gap:16px;}
  .check-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .cat-hero{padding:36px 0 52px;}
  .cat-hero h1{max-width:none;}
  .hero-actions .btn{flex:1 1 auto;}
  .cta-band{padding:40px 24px;}
}
@media (max-width:576px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .stat-strip{grid-template-columns:1fr;}
  .row-card,.row-card.is-wide{grid-template-columns:1fr;}
  .row-thumb{aspect-ratio:16/9;}
  .row-link{margin-left:0;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .btn{width:100%;}
  .nav-cta,.hero-actions .btn{width:100%;}
  .cta-band{padding:32px 18px;}
}

/* roulang page: category2 */
:root{
  --bg:#07101C;
  --bg-2:#0A1424;
  --surface:#0B1728;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.09);
  --line-soft:rgba(255,255,255,.06);
  --cyan:#2FE0C8;
  --cyan-deep:#25A9E0;
  --purple:#7C6CFF;
  --amber:#FFB020;
  --text:#EAF2F6;
  --text-2:#A9BAC8;
  --text-3:#6E8296;
  --danger:#FF6B6B;
  --r-10:10px;
  --r-16:16px;
  --r-22:22px;
  --r-pill:999px;
  --sh-card:0 18px 40px -18px rgba(0,0,0,.7);
  --sh-hover:0 26px 54px -20px rgba(0,0,0,.85);
  --ease:.28s cubic-bezier(.4,0,.2,1);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  background-image:
    linear-gradient(rgba(47,224,200,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(47,224,200,.04) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-3;
  background:
    radial-gradient(680px 420px at 12% 4%,rgba(47,224,200,.14),transparent 62%),
    radial-gradient(720px 460px at 92% 22%,rgba(124,108,255,.13),transparent 64%),
    radial-gradient(900px 600px at 50% 118%,rgba(47,224,200,.08),transparent 68%);
  pointer-events:none;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:.01em}
p{margin:0}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* ---------- header / nav ---------- */
.site-head{position:sticky;top:0;z-index:100;padding:14px 0;transition:padding var(--ease)}
.site-head.is-scrolled{padding:8px 0}
.nav-card{
  display:flex;
  align-items:center;
  gap:18px;
  padding:10px 16px;
  border-radius:var(--r-22);
  background:rgba(8,17,29,.72);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:var(--sh-card);
  transition:background var(--ease),box-shadow var(--ease);
}
.site-head.is-scrolled .nav-card{background:rgba(6,13,23,.92);box-shadow:var(--sh-hover)}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(47,224,200,.24),rgba(124,108,255,.22));
  border:1px solid rgba(47,224,200,.35);
  color:var(--cyan);font-size:17px;
}
.logo-text{display:flex;flex-direction:column;font-size:16px;font-weight:700;line-height:1.15;letter-spacing:.02em}
.logo-text small{font-size:11px;font-weight:400;color:var(--text-3);letter-spacing:.06em}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:8px;
  padding:9px 12px;border-radius:12px;
  font-size:13px;color:var(--text-2);
  border:1px solid transparent;
}
.nav-item i{font-size:14px;color:var(--text-3);transition:color var(--ease)}
.nav-item:hover{color:var(--text);background:rgba(47,224,200,.08);border-color:rgba(47,224,200,.22)}
.nav-item:hover i{color:var(--cyan)}
.nav-item.is-active{color:var(--text);background:rgba(47,224,200,.12);border-color:rgba(47,224,200,.28)}
.nav-item.is-active i{color:var(--cyan)}
.nav-item.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;
  border-radius:var(--r-pill);background:var(--cyan);
}
.burger{
  display:none;width:42px;height:42px;border-radius:12px;
  place-items:center;color:var(--text);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
}
.burger:hover{background:rgba(47,224,200,.12);border-color:rgba(47,224,200,.3)}
.nav-scrim{
  position:fixed;inset:0;z-index:110;
  background:rgba(4,9,16,.84);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  opacity:0;pointer-events:none;transition:opacity var(--ease);
}
body.nav-open .nav-scrim{opacity:1;pointer-events:auto}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease),opacity var(--ease);
}
.btn i{font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,#2FE0C8,#25A9E0);
  color:#05121A;
  box-shadow:0 12px 30px -12px rgba(47,224,200,.6);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,224,200,.4),0 16px 34px -10px rgba(47,224,200,.55)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{
  background:rgba(255,255,255,.03);
  border-color:rgba(47,224,200,.4);
  color:var(--cyan);
}
.btn-ghost:hover{background:rgba(47,224,200,.12);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.nav-cta{padding:11px 20px;flex-shrink:0}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}

/* ---------- breadcrumb ---------- */
.crumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:26px;
}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--cyan)}
.crumb i{font-size:10px;color:var(--text-3)}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;
  padding:40px 0 80px;
  background-image:
    linear-gradient(180deg,rgba(7,16,28,.74),rgba(7,16,28,.96)),
    url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
}
.hero-inner{max-width:820px;margin:0 auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.08em;color:var(--cyan);
  background:rgba(47,224,200,.1);
  border:1px solid rgba(47,224,200,.3);
}
.eyebrow i{font-size:12px}
.cat-hero h1{
  margin:20px 0 0;
  font-size:clamp(30px,4.4vw,50px);
  line-height:1.2;
  letter-spacing:.01em;
}
.cat-hero h1 em{font-style:normal;color:var(--cyan)}
.lead{
  margin:18px auto 0;max-width:660px;
  font-size:17px;color:var(--text-2);
}
.hero-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:30px}
.hero-facts{
  display:flex;justify-content:center;flex-wrap:wrap;gap:0;
  margin-top:36px;padding:18px 8px;
  border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line-soft);
}
.hero-facts li{
  flex:1 1 150px;min-width:140px;
  display:flex;flex-direction:column;align-items:center;gap:4px;
  padding:6px 14px;
  border-right:1px solid var(--line-soft);
}
.hero-facts li:last-child{border-right:none}
.hero-facts strong{font-family:var(--mono);font-size:22px;color:var(--cyan);letter-spacing:.02em}
.hero-facts span{font-size:13px;color:var(--text-3)}

.hero-figure{
  position:relative;margin:54px 0 0;
  border-radius:var(--r-22);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-card);
  background:var(--surface);
}
.hero-figure img{width:100%;height:clamp(220px,34vw,420px);object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,16,28,.05) 30%,rgba(7,16,28,.86));
  pointer-events:none;
}
.glass-note{
  position:absolute;left:20px;right:20px;bottom:20px;z-index:2;
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
  padding:18px 20px;border-radius:var(--r-16);
  background:rgba(11,23,40,.6);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  margin:0;
}
.glass-note div{display:flex;flex-direction:column;gap:4px}
.glass-note strong{font-size:14px;color:var(--text)}
.glass-note span{font-size:12px;color:var(--text-3);line-height:1.6}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section--alt{background:var(--bg-2)}
.section--deep{
  background:linear-gradient(180deg,rgba(10,20,36,.4),rgba(7,16,28,.9)),
  url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
}
.sec-head{max-width:700px;margin-bottom:44px}
.sec-head.is-center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head h2{font-size:clamp(24px,3vw,34px);margin-top:16px}
.sec-head p{margin-top:14px;color:var(--text-2);font-size:15px}

/* ---------- info cards ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.info-card{
  position:relative;
  display:flex;flex-direction:column;gap:12px;
  padding:26px;
  border-radius:var(--r-16);
  background:var(--glass);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:var(--sh-card),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.info-card:hover{
  transform:translateY(-2px);
  border-color:rgba(47,224,200,.35);
  background:rgba(255,255,255,.06);
  box-shadow:var(--sh-hover),inset 0 1px 0 rgba(255,255,255,.08);
}
.card-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  font-size:18px;color:var(--cyan);
  background:linear-gradient(135deg,rgba(47,224,200,.16),rgba(124,108,255,.16));
  border:1px solid rgba(47,224,200,.26);
}
.info-card h3{font-size:19px}
.info-card p{font-size:14.5px;color:var(--text-2)}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line-soft);
}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.06em;
  color:var(--purple);
  background:rgba(124,108,255,.12);
  border:1px solid rgba(124,108,255,.28);
}
.card-foot .tag{color:var(--text-3);background:rgba(255,255,255,.04);border-color:var(--line)}
.link-more{font-size:13px;color:var(--cyan);display:inline-flex;align-items:center;gap:6px}
.link-more:hover{color:#7ff0e0;gap:10px}

/* ---------- split blocks ---------- */
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;
  padding:34px 0;
}
.split + .split{border-top:1px solid var(--line-soft)}
.split-media{
  border-radius:var(--r-22);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh-card);
  background:var(--surface);
}
.split-media img{width:100%;height:300px;object-fit:cover;transition:transform .5s ease}
.split-media:hover img{transform:scale(1.03)}
.split-body h3{font-size:clamp(20px,2.4vw,26px)}
.split-body p{margin-top:14px;color:var(--text-2);font-size:15px}
.bullet-list{margin-top:20px;display:flex;flex-direction:column;gap:12px}
.bullet-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:14.5px;color:var(--text-2);
}
.bullet-list i{color:var(--cyan);font-size:14px;margin-top:6px}
.split.is-reverse .split-media{order:2}

/* ---------- checklist ---------- */
.checklist-wrap{display:grid;grid-template-columns:0.9fr 1.1fr;gap:48px;align-items:start}
.checklist-side h2{font-size:clamp(24px,3vw,32px);margin-top:16px}
.checklist-side p{margin-top:14px;color:var(--text-2);font-size:15px}
.check-list{display:flex;flex-direction:column;gap:14px}
.check-item{
  display:flex;gap:16px;align-items:flex-start;
  padding:20px 22px;
  border-radius:var(--r-16);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--sh-card);
  transition:border-color var(--ease),transform var(--ease),background var(--ease);
}
.check-item:hover{border-color:rgba(47,224,200,.32);transform:translateY(-2px);background:rgba(255,255,255,.06)}
.check-num{
  flex:0 0 34px;width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;
  font-family:var(--mono);font-size:14px;color:var(--cyan);
  background:rgba(47,224,200,.1);
  border:1px solid rgba(47,224,200,.3);
}
.check-item strong{display:block;font-size:15.5px;color:var(--text)}
.check-item p{font-size:14px;color:var(--text-3);margin-top:4px}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;margin:0 auto}
.faq-item{
  position:relative;
  border-radius:var(--r-16);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--sh-card);
  overflow:hidden;
  transition:border-color var(--ease),background var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  border-radius:var(--r-pill);background:transparent;transition:background var(--ease);
}
.faq-item[open]{border-color:rgba(47,224,200,.34);background:rgba(255,255,255,.06)}
.faq-item[open]::before{background:var(--cyan)}
.faq-item:hover{border-color:rgba(47,224,200,.28)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;font-size:11px;color:var(--cyan);
  background:rgba(47,224,200,.1);border:1px solid rgba(47,224,200,.3);
  transition:transform var(--ease);
}
.faq-item[open] .faq-icon{transform:rotate(180deg)}
.faq-body{padding:0 24px 22px;color:var(--text-2);font-size:14.5px}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap;
  padding:44px;
  border-radius:var(--r-22);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:var(--sh-card),inset 0 1px 0 rgba(255,255,255,.07);
}
.cta-band::before{
  content:"";position:absolute;width:420px;height:420px;right:-120px;top:-180px;
  background:radial-gradient(circle,rgba(255,176,32,.2),transparent 66%);
  pointer-events:none;
}
.cta-band::after{
  content:"";position:absolute;width:380px;height:380px;left:-140px;bottom:-200px;
  background:radial-gradient(circle,rgba(47,224,200,.18),transparent 66%);
  pointer-events:none;
}
.cta-copy{position:relative;z-index:2;max-width:640px}
.cta-copy h2{font-size:clamp(22px,2.8vw,30px);margin-top:16px}
.cta-copy p{margin-top:12px;color:var(--text-2);font-size:15px}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-foot{
  margin-top:0;padding:66px 0 26px;
  background:rgba(6,12,21,.9);
  border-top:1px solid var(--line);
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.foot-brand p{margin-top:16px;font-size:14px;color:var(--text-3);max-width:340px}
.foot-col h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:.04em}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col li{font-size:13.5px;color:var(--text-3)}
.foot-col a{color:var(--text-2);font-size:13.5px}
.foot-col a:hover{color:var(--cyan)}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:46px;padding-top:22px;
  border-top:1px solid var(--line-soft);
  font-size:12.5px;color:var(--text-3);
}
.foot-bottom i{font-size:12px}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .container{padding:0 22px}
  .nav-item span{font-size:12.5px}
}
@media (max-width:992px){
  .section{padding:64px 0}
  .cat-hero{padding:30px 0 62px}
  .grid-2{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:26px;padding:26px 0}
  .split.is-reverse .split-media{order:0}
  .split-media img{height:250px}
  .glass-note{grid-template-columns:1fr;gap:10px}
  .checklist-wrap{grid-template-columns:1fr;gap:30px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-band{padding:32px}
  .nav-links{
    position:fixed;top:76px;left:16px;right:16px;
    margin:0;flex-direction:column;align-items:stretch;gap:10px;
    padding:16px;border-radius:var(--r-22);
    background:rgba(8,17,29,.97);
    border:1px solid var(--line);
    -webkit-backdrop-filter:blur(16px);
    backdrop-filter:blur(16px);
    box-shadow:var(--sh-hover);
    z-index:120;
    opacity:0;transform:translateY(-14px);pointer-events:none;
    transition:opacity var(--ease),transform var(--ease);
  }
  body.nav-open .nav-links{opacity:1;transform:translateY(0);pointer-events:auto}
  .nav-item{padding:14px;font-size:14px;border-radius:12px}
  .nav-item.is-active::after{left:14px;right:auto;width:26px;bottom:6px}
  .burger{display:grid;margin-left:auto}
  .nav-cta{display:none}
  body.nav-open .nav-cta{
    display:inline-flex;position:fixed;left:16px;right:16px;bottom:20px;z-index:130;
    padding:15px 22px;justify-content:center;
  }
}
@media (max-width:768px){
  .hero-facts li{flex:1 1 50%;border-right:none;border-bottom:1px solid var(--line-soft);padding:12px 10px}
  .hero-facts li:last-child{border-bottom:none}
  .hero-facts{gap:0;padding:6px 4px}
  .foot-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start}
}
@media (max-width:576px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .cat-hero{padding:24px 0 52px}
  .cat-hero h1{font-size:clamp(26px,7.6vw,34px)}
  .lead{font-size:15.5px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .hero-figure img{height:210px}
  .glass-note{padding:14px;left:12px;right:12px;bottom:12px}
  .info-card{padding:20px}
  .check-item{padding:16px 18px}
  .faq-item summary{padding:16px 18px;font-size:15px}
  .faq-body{padding:0 18px 18px}
  .cta-band{padding:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .logo-text{font-size:14.5px}
  .logo-text small{font-size:10px}
}