/* roulang page: index */
:root{
  --bg:#060b14;--bg2:#0a1120;--card:#0f1829;--card2:#131f35;
  --line:rgba(148,163,184,.13);--line2:rgba(34,224,255,.4);
  --cyan:#22e0ff;--magenta:#ff3d9a;--lime:#b1f03c;
  --text:#e8eef9;--sub:#9aaccc;--muted:#617795;
  --r-lg:22px;--r-md:14px;--r-sm:10px;
  --shadow:0 18px 50px rgba(0,0,0,.45);
  --glow:0 0 34px rgba(34,224,255,.14);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none;transition:all .25s ease}
img{max-width:100%;display:block}
button,input{font-family:inherit;outline:none}
ul,ol{list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.text-grad{background:linear-gradient(92deg,var(--cyan),var(--magenta));-webkit-background-clip:text;background-clip:text;color:transparent}
.neon-title{position:relative;display:inline-flex;align-items:center;gap:14px}
.neon-title::before{content:"";width:46px;height:2px;background:linear-gradient(90deg,var(--cyan),transparent);box-shadow:0 0 12px rgba(34,224,255,.7)}
/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(6,11,20,.85);backdrop-filter:blur(20px);border-bottom:1px solid var(--line);box-shadow:0 6px 38px rgba(0,0,0,.4)}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:linear-gradient(90deg,transparent,var(--cyan),var(--magenta),transparent);opacity:.55}
.logo-text{font-size:22px;font-weight:800;letter-spacing:.4px;display:flex;align-items:center;gap:10px}
.logo-badge{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--cyan),var(--magenta));display:flex;align-items:center;justify-content:center;font-size:15px;color:#05080f;box-shadow:0 0 22px rgba(34,224,255,.4)}
.nav-link{position:relative;font-size:15.5px;font-weight:500;color:var(--sub);padding:8px 4px;letter-spacing:.2px}
.nav-link:hover{color:#fff}
.nav-link.active{color:#fff}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--cyan),var(--magenta));box-shadow:0 0 16px rgba(34,224,255,.8)}
.btn-neon{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 26px;border-radius:999px;font-weight:700;font-size:15px;background:linear-gradient(92deg,var(--cyan),var(--magenta));color:#05080f;box-shadow:0 4px 30px rgba(34,224,255,.35);transition:all .3s;border:none;cursor:pointer}
.btn-neon:hover{transform:translateY(-2px);box-shadow:0 8px 42px rgba(34,224,255,.55);color:#05080f}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 26px;border-radius:999px;font-weight:600;font-size:15px;color:var(--text);border:1px solid rgba(34,224,255,.45);background:transparent;transition:all .3s;cursor:pointer}
.btn-ghost:hover{background:rgba(34,224,255,.1);border-color:var(--cyan);box-shadow:0 0 24px rgba(34,224,255,.2)}
/* Hero */
.hero{position:relative;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;padding:140px 0 120px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(5,9,18,.94) 18%,rgba(5,9,18,.72) 50%,rgba(8,13,26,.88) 82%)}
.hero::after{content:"";position:absolute;left:50%;top:-40%;width:900px;height:700px;background:radial-gradient(ellipse,var(--cyan) 0%,transparent 62%);opacity:.1;transform:translateX(-50%);pointer-events:none}
.hero-content{position:relative;z-index:2}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 18px;border-radius:999px;border:1px solid rgba(34,224,255,.4);background:rgba(34,224,255,.08);font-size:13.5px;font-weight:600;letter-spacing:.6px;color:var(--cyan)}
.hero h1{font-size:clamp(40px,6vw,68px);line-height:1.18;font-weight:900;letter-spacing:1px}
.hero p.sub{font-size:clamp(15px,2vw,18px);color:var(--sub);max-width:620px}
.hero-stats{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:64px;border-radius:var(--r-lg);background:rgba(15,24,41,.65);border:1px solid var(--line);backdrop-filter:blur(14px);padding:28px 30px}
.hs-num{font-size:32px;font-weight:800;background:linear-gradient(92deg,var(--cyan),var(--magenta));-webkit-background-clip:text;background-clip:text;color:transparent}
/* Cards */
.card-base{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);transition:all .3s ease}
.card-base:hover{transform:translateY(-6px);border-color:rgba(34,224,255,.38);box-shadow:var(--glow),var(--shadow)}
.section-pad{padding:96px 0}
.sec-head{margin-bottom:52px}
.sec-label{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;letter-spacing:2px;color:var(--cyan);text-transform:uppercase}
.sec-title{font-size:clamp(28px,3.4vw,40px);font-weight:800;line-height:1.25;letter-spacing:.4px}
/* Cards specific */
.feature-icon{width:58px;height:58px;border-radius:16px;background:linear-gradient(135deg,rgba(34,224,255,.16),rgba(255,61,154,.16));display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--cyan);border:1px solid rgba(34,224,255,.25)}
.cat-card{position:relative;border-radius:var(--r-lg);overflow:hidden;min-height:300px;display:flex;align-items:flex-end;border:1px solid var(--line);transition:all .35s}
.cat-card:hover{transform:translateY(-8px);border-color:var(--line2);box-shadow:var(--glow),var(--shadow)}
.cat-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s}
.cat-card:hover img{transform:scale(1.07)}
.cat-card .mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,9,18,.1) 20%,rgba(5,9,18,.88) 82%)}
.cat-card .inner{position:relative;z-index:2;padding:30px}
/* List */
.news-item{display:flex;align-items:center;gap:18px;padding:20px 22px;border-radius:var(--r-md);background:var(--card);border:1px solid var(--line);transition:all .3s}
.news-item:hover{border-color:rgba(34,224,255,.35);background:var(--card2);transform:translateX(6px)}
.news-tag{flex-shrink:0;padding:4px 14px;border-radius:999px;font-size:12.5px;font-weight:700;color:var(--cyan);background:rgba(34,224,255,.1);border:1px solid rgba(34,224,255,.25)}
/* Steps */
.step-card{position:relative;padding:32px 28px;border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line);transition:all .3s}
.step-card:hover{border-color:var(--line2);box-shadow:var(--glow);transform:translateY(-5px)}
.step-num{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--cyan),var(--magenta));display:flex;align-items:center;justify-content:center;font-weight:800;font-size:19px;color:#05080f;box-shadow:0 0 20px rgba(34,224,255,.35)}
/* FAQ */
.faq-item{border:1px solid var(--line);border-radius:var(--r-md);background:var(--card);margin-bottom:14px;overflow:hidden;transition:border-color .3s}
.faq-item:hover{border-color:rgba(34,224,255,.3)}
.faq-q{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:19px 24px;cursor:pointer;font-weight:600;color:var(--text)}
.faq-q i{color:var(--cyan);font-size:15px;transition:transform .3s}
.faq-item.open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 24px;color:var(--sub);font-size:15px}
.faq-item.open .faq-a{max-height:300px;padding-bottom:22px}
/* CTA */
.cta-section{position:relative;border-radius:30px;overflow:hidden;background:linear-gradient(120deg,rgba(34,224,255,.16),rgba(255,61,154,.16));border:1px solid rgba(34,224,255,.32);padding:80px 56px;text-align:center;backdrop-filter:blur(10px)}
.cta-section::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover;opacity:.1;pointer-events:none}
/* Footer */
.site-footer{border-top:1px solid var(--line);background:var(--bg2);padding:64px 0 0}
.site-footer .f-title{font-size:16px;font-weight:700;margin-bottom:18px;position:relative}
.site-footer .f-title::before{content:"";display:inline-block;width:24px;height:2px;background:var(--cyan);margin-right:8px;vertical-align:middle;box-shadow:0 0 10px rgba(34,224,255,.6)}
.f-links a{display:block;color:var(--sub);font-size:14.5px;padding:5px 0}
.f-links a:hover{color:var(--cyan)}
.f-bottom{border-top:1px solid var(--line);margin-top:48px;padding:22px 0;font-size:13.5px;color:var(--muted)}
/* Mobile nav */
@media(max-width:1023px){
  .mobile-nav{position:fixed;top:72px;left:0;right:0;background:rgba(6,11,20,.98);backdrop-filter:blur(20px);border-bottom:1px solid var(--line);padding:16px 24px 26px;transform:translateY(-120%);transition:transform .35s ease;z-index:99}
  .mobile-nav.open{transform:translateY(0)}
  .mobile-nav a{display:block;padding:12px 4px;font-size:16px;font-weight:600;color:var(--sub);border-bottom:1px solid rgba(148,163,184,.08)}
  .mobile-nav a.active,.mobile-nav a:hover{color:var(--cyan)}
  .burger{display:flex;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;z-index:110}
  .burger span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:all .3s}
  .burger.active span:nth-child(1){transform:translateY(7px) rotate(45deg);background:var(--cyan)}
  .burger.active span:nth-child(2){opacity:0}
  .burger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);background:var(--magenta)}
}
@media(max-width:767px){
  .hero{padding:90px 0 70px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:14px;padding:22px 18px;margin-top:40px}
  .section-pad{padding:68px 0}
  .cta-section{padding:50px 26px}
  .container{padding:0 18px}
}
@media(max-width:520px){
  .hero h1{font-size:34px}
  .logo-text{font-size:17px}
  .hs-num{font-size:24px}
}

/* roulang page: category1 */
:root{
  --bg:#070b14;
  --bg2:#0c1322;
  --bg3:#111b30;
  --primary:#00f0ff;
  --primary2:#7b61ff;
  --accent:#ff3c7e;
  --text:#eaf2ff;
  --sub:#8b9cc4;
  --border:rgba(0,240,255,.18);
  --radius:16px;
  --shadow:0 8px 30px rgba(0,0,0,.4);
  --shadow-neon:0 0 25px rgba(0,240,255,.15);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{overflow-x:hidden}
body{
  font-family:'Inter','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  font-size:16px;
}
a{text-decoration:none;color:inherit;transition:all .25s ease}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.container{max-width:1220px;margin:0 auto;padding:0 24px}
.text-sub{color:var(--sub)}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(7,11,20,.85);
  backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(0,240,255,.12);
  box-shadow:0 4px 30px rgba(0,0,0,.35);
}
.site-header::after{
  content:'';position:absolute;left:0;bottom:-1px;height:2px;width:100%;
  background:linear-gradient(90deg,transparent,rgba(0,240,255,.6),rgba(123,97,255,.5),transparent);
  pointer-events:none;
}
.logo-text{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;letter-spacing:.3px;color:var(--text)}
.logo-badge{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--primary2));
  color:#001018;font-size:.95rem;
  box-shadow:0 0 16px rgba(0,240,255,.3);
}
.nav-link{
  position:relative;font-size:.95rem;font-weight:500;color:var(--sub);
  padding:8px 2px;letter-spacing:.2px;
}
.nav-link::after{
  content:'';position:absolute;left:0;bottom:0;width:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary2));
  transition:width .3s ease;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after,.nav-link.active::after{width:100%}
.nav-link.active{color:var(--text);text-shadow:0 0 12px rgba(0,240,255,.35)}
.btn-neon{
  display:inline-flex;align-items:center;gap:8px;
  background:linear-gradient(135deg,rgba(0,240,255,.15),rgba(123,97,255,.15));
  border:1px solid rgba(0,240,255,.4);
  color:var(--primary);font-weight:600;border-radius:10px;
  padding:10px 24px;font-size:.9rem;transition:all .3s ease;
  box-shadow:0 0 12px rgba(0,240,255,.08);
}
.btn-neon:hover{
  background:linear-gradient(135deg,rgba(0,240,255,.25),rgba(123,97,255,.25));
  box-shadow:0 0 24px rgba(0,240,255,.25);
  transform:translateY(-2px);
  color:#fff;
}
.btn-solid{
  display:inline-flex;align-items:center;gap:8px;
  background:linear-gradient(135deg,var(--primary),var(--primary2));
  color:#001018;font-weight:700;border-radius:10px;
  padding:12px 28px;font-size:.95rem;transition:all .3s ease;
  box-shadow:0 4px 20px rgba(0,240,255,.25);
}
.btn-solid:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(0,240,255,.4)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  background:transparent;border:1px solid var(--border);
  color:var(--text);font-weight:600;border-radius:10px;
  padding:12px 28px;font-size:.95rem;transition:all .3s;
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.burger{display:flex;flex-direction:column;gap:5px;padding:8px;z-index:60}
.burger span{width:24px;height:2px;border-radius:2px;background:var(--text);transition:all .3s}
.mobile-menu{
  position:fixed;top:0;right:0;width:300px;height:100vh;background:var(--bg2);
  border-left:1px solid var(--border);padding:90px 32px 32px;z-index:55;
  transform:translateX(100%);transition:transform .3s ease;
  display:flex;flex-direction:column;gap:18px;
}
.mobile-menu.open{transform:translateX(0)}
.mobile-menu a{font-size:1.1rem;font-weight:600;color:var(--text);padding:10px 8px;border-left:3px solid transparent;transition:all .25s}
.mobile-menu a:hover,.mobile-menu a.active{border-left-color:var(--primary);color:var(--primary);padding-left:14px}

/* Hero */
.hero{
  position:relative;min-height:440px;
  background:linear-gradient(rgba(7,11,20,.82),rgba(7,11,20,.9)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  display:flex;align-items:center;padding:80px 0;
}
.hero-inner{position:relative;z-index:2;max-width:860px}
.hero .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(0,240,255,.1);border:1px solid rgba(0,240,255,.25);
  color:var(--primary);font-size:.8rem;font-weight:600;letter-spacing:2px;
  padding:7px 18px;border-radius:30px;margin-bottom:20px;
}
.hero h1{font-size:3rem;font-weight:900;line-height:1.2;letter-spacing:.5px;margin-bottom:18px}
.hero h1 span{background:linear-gradient(90deg,var(--primary),var(--primary2));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero p{font-size:1.1rem;color:var(--sub);max-width:640px;margin-bottom:30px}

/* 面包屑 */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--sub);padding:16px 0 0}
.breadcrumb a{color:var(--sub)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb i{font-size:.7rem;opacity:.6}

/* 板块 */
.section{padding:90px 0}
.section-alt{background:var(--bg2);border-top:1px solid rgba(0,240,255,.06);border-bottom:1px solid rgba(0,240,255,.06)}
.section-head{text-align:center;max-width:720px;margin:0 auto 55px}
.section-head .tag{
  display:inline-block;background:rgba(0,240,255,.1);border:1px solid rgba(0,240,255,.25);
  color:var(--primary);font-size:.78rem;font-weight:600;letter-spacing:2px;
  padding:5px 16px;border-radius:30px;margin-bottom:16px;
}
.section-head h2{font-size:2.1rem;font-weight:800;line-height:1.3;margin-bottom:14px}
.section-head p{color:var(--sub);font-size:1rem}

/* 卡片 */
.card{
  background:var(--bg3);border:1px solid rgba(0,240,255,.08);
  border-radius:var(--radius);padding:30px;transition:all .35s ease;position:relative;overflow:hidden;
}
.card:hover{border-color:rgba(0,240,255,.3);box-shadow:var(--shadow-neon),0 8px 30px rgba(0,0,0,.35);transform:translateY(-6px)}
.card::before{
  content:'';position:absolute;top:0;left:0;width:100%;height:3px;
  background:linear-gradient(90deg,var(--primary),transparent);
  opacity:0;transition:opacity .3s;
}
.card:hover::before{opacity:1}
.card-icon{
  width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:1.3rem;margin-bottom:18px;color:var(--primary);
  background:rgba(0,240,255,.1);border:1px solid rgba(0,240,255,.2);
}
.card h3{font-size:1.2rem;font-weight:700;margin-bottom:10px}
.card p{color:var(--sub);font-size:.93rem;line-height:1.7}

/* 步骤 */
.step-card{display:flex;gap:20px;padding:28px 30px;background:var(--bg3);border:1px solid rgba(0,240,255,.08);border-radius:var(--radius);transition:all .3s}
.step-card:hover{border-color:rgba(0,240,255,.3);box-shadow:var(--shadow-neon);transform:translateX(6px)}
.step-num{
  flex-shrink:0;width:44px;height:44px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--primary2));
  color:#001018;font-weight:800;font-size:1.1rem;display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 18px rgba(0,240,255,.25);
}
.step-content h4{font-size:1.1rem;font-weight:700;margin-bottom:6px}
.step-content p{color:var(--sub);font-size:.92rem}

/* 列表 */
.check-list{list-style:none;display:flex;flex-direction:column;gap:12px}
.check-list li{display:flex;align-items:flex-start;gap:10px;color:var(--text);font-size:.95rem}
.check-list li i{color:var(--primary);margin-top:4px;font-size:.85rem;flex-shrink:0}
.check-list li span{color:var(--sub);font-size:.88rem;display:block}

/* 数字统计 */
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;text-align:center}
.stat-item{background:var(--bg3);border:1px solid rgba(0,240,255,.1);border-radius:var(--radius);padding:38px 20px;transition:all .3s}
.stat-item:hover{border-color:rgba(0,240,255,.35);box-shadow:var(--shadow-neon)}
.stat-num{font-size:2.5rem;font-weight:900;background:linear-gradient(135deg,var(--primary),var(--primary2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;line-height:1.2}
.stat-label{color:var(--sub);font-size:.9rem;margin-top:8px}

/* FAQ */
.faq-item{background:var(--bg3);border:1px solid rgba(0,240,255,.08);border-radius:14px;margin-bottom:14px;transition:all .3s;overflow:hidden}
.faq-item:hover{border-color:rgba(0,240,255,.25)}
.faq-q{padding:20px 24px;display:flex;align-items:center;justify-content:space-between;cursor:pointer;font-weight:600;font-size:1rem}
.faq-q i{color:var(--primary);transition:all .3s}
.faq-q.open i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 24px;color:var(--sub);font-size:.93rem;line-height:1.8}
.faq-a.open{max-height:300px;padding-bottom:20px}

/* CTA */
.cta-section{
  position:relative;background:linear-gradient(120deg,rgba(0,240,255,.12),rgba(123,97,255,.12)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-radius:24px;padding:70px 60px;text-align:center;border:1px solid rgba(0,240,255,.2);overflow:hidden;
}
.cta-section h2{font-size:2rem;font-weight:800;margin-bottom:16px}
.cta-section p{color:var(--sub);max-width:520px;margin:0 auto 30px}

/* 页脚 */
.site-footer{background:#05080f;border-top:1px solid rgba(0,240,255,.1);padding:70px 0 0;margin-top:0}
.site-footer .logo-text{color:var(--text)}
.f-title{font-size:1rem;color:var(--text);font-weight:700;margin-bottom:18px;position:relative;padding-bottom:10px}
.f-title::after{
  content:'';position:absolute;left:0;bottom:0;width:28px;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary2));border-radius:2px;
}
.f-links{list-style:none;display:flex;flex-direction:column;gap:10px}
.f-links a{color:var(--sub);font-size:.9rem;transition:all .25s}
.f-links a:hover{color:var(--primary);padding-left:6px}
.f-bottom{margin-top:50px;padding:22px 0;border-top:1px solid rgba(0,240,255,.08);text-align:center;color:var(--sub);font-size:.83rem}

/* 折行辅助 */
.wrap-balance{text-wrap:balance}

/* 响应式 */
@media(max-width:1024px){
  .hero h1{font-size:2.4rem}
  .stat-grid{grid-template-columns:repeat(3,1fr)}
  .cta-section{padding:50px 36px}
}
@media(max-width:768px){
  .section{padding:60px 0}
  .section-head h2{font-size:1.7rem}
  .hero{min-height:360px;padding:60px 0}
  .hero h1{font-size:1.9rem}
  .hero p{font-size:1rem}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .cta-section{padding:40px 24px}
  .cta-section h2{font-size:1.5rem}
}
@media(max-width:520px){
  .stat-grid{grid-template-columns:1fr 1fr;gap:12px}
  .stat-num{font-size:1.8rem}
  .step-card{flex-direction:column;gap:14px;padding:22px}
  .hero h1{font-size:1.6rem}
  .card{padding:24px}
  .section-head h2{font-size:1.4rem}
  .cta-section{padding:32px 20px}
}

/* roulang page: article */
:root {
        --bg: #070b14;
        --bg-alt: #0b1220;
        --card: #0f1626;
        --card-hover: #131c30;
        --border: #1c2946;
        --border-light: #2a3a5e;
        --text: #e2e8f0;
        --text-secondary: #94a3b8;
        --text-sub: #7086a4;
        --primary: #22d3ee;
        --primary-dark: #0e7490;
        --accent: #34d399;
        --radius: 16px;
        --radius-sm: 10px;
        --shadow: 0 10px 40px rgba(0, 0, 0, .35);
        --shadow-glow: 0 0 24px rgba(34, 211, 238, .18);
        --ease: cubic-bezier(.4, 0, .2, 1);
        --font: 'Inter', 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
    }

    *, *::before, *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font);
        background: var(--bg);
        color: var(--text);
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
    }

    img {
        max-width: 100%;
        height: auto;
        display: block;
    }

    a {
        color: inherit;
        text-decoration: none;
        transition: color .25s var(--ease);
    }

    button {
        background: none;
        border: none;
        cursor: pointer;
        font-family: inherit;
    }

    a:focus-visible, button:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 3px;
        border-radius: 6px;
    }

    ::selection {
        background: rgba(34, 211, 238, .25);
        color: #fff;
    }

    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ========== Header ========== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 60;
        background: rgba(7, 11, 20, .86);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        border-bottom: 1px solid rgba(34, 211, 238, .12);
        box-shadow: 0 4px 30px rgba(0, 0, 0, .35);
    }

    .logo-text {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        font-size: 20px;
        font-weight: 800;
        color: #f1f5f9;
        letter-spacing: .5px;
        white-space: nowrap;
    }

    .logo-badge {
        width: 36px;
        height: 36px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 10px;
        background: linear-gradient(135deg, rgba(34, 211, 238, .2), rgba(52, 211, 153, .15));
        border: 1px solid rgba(34, 211, 238, .4);
        color: var(--primary);
        font-size: 15px;
        box-shadow: 0 0 16px rgba(34, 211, 238, .2);
    }

    .nav-link {
        position: relative;
        font-size: 15px;
        font-weight: 500;
        color: #b6c2d8;
        padding: 8px 2px;
        letter-spacing: .2px;
        transition: color .3s var(--ease);
    }

    .nav-link:hover {
        color: #e6edf7;
    }

    .nav-link.active {
        color: var(--primary);
        text-shadow: 0 0 20px rgba(34, 211, 238, .45);
    }

    .nav-link.active::after {
        content: '';
        position: absolute;
        left: 0;
        right: 0;
        bottom: -8px;
        height: 2px;
        border-radius: 2px;
        background: linear-gradient(90deg, var(--primary), var(--accent));
        box-shadow: 0 0 12px var(--primary);
    }

    .btn-neon {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: linear-gradient(135deg, #22d3ee 0%, #34d399 100%);
        color: #0b1220;
        font-weight: 700;
        font-size: 14px;
        border-radius: 10px;
        padding: 12px 26px;
        border: 1px solid rgba(255, 255, 255, .18);
        box-shadow: 0 0 18px rgba(34, 211, 238, .25);
        transition: transform .3s var(--ease), box-shadow .3s var(--ease), color .3s var(--ease);
    }

    .btn-neon:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 32px rgba(34, 211, 238, .4);
        color: #0b1220;
    }

    .btn-outline {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: transparent;
        color: var(--primary);
        font-weight: 600;
        font-size: 14px;
        border-radius: 10px;
        padding: 12px 26px;
        border: 1px solid rgba(34, 211, 238, .45);
        transition: all .3s var(--ease);
    }

    .btn-outline:hover {
        background: rgba(34, 211, 238, .08);
        border-color: var(--primary);
        box-shadow: 0 0 20px rgba(34, 211, 238, .15);
        color: #a7ecfb;
    }

    .burger {
        display: flex;
        flex-direction: column;
        gap: 5px;
        width: 42px;
        height: 42px;
        border-radius: 10px;
        align-items: center;
        justify-content: center;
        border: 1px solid var(--border);
        background: rgba(255, 255, 255, .03);
        transition: background .3s;
    }

    .burger:hover {
        background: rgba(255, 255, 255, .08);
    }

    .burger span {
        width: 18px;
        height: 2px;
        background: #cbd5e1;
        border-radius: 2px;
        transition: all .3s var(--ease);
    }

    .burger.open span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    .burger.open span:nth-child(2) {
        opacity: 0;
    }
    .burger.open span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .mobile-menu {
        display: none;
        background: var(--bg-alt);
        border-top: 1px solid var(--border);
        padding: 18px 24px 26px;
    }

    .mobile-menu.open {
        display: block;
    }

    .mobile-link {
        display: block;
        padding: 12px 8px;
        font-size: 16px;
        color: #b6c2d8;
        border-radius: 8px;
        border-bottom: 1px solid rgba(28, 41, 70, .4);
    }

    .mobile-link.active {
        color: var(--primary);
        background: rgba(34, 211, 238, .05);
    }

    @media (min-width: 1024px) {
        .mobile-menu {
            display: none !important;
        }
    }

    /* ========== Article Hero ========== */
    .article-hero {
        position: relative;
        background-color: var(--bg);
        border-bottom: 1px solid rgba(34, 211, 238, .12);
        overflow: hidden;
    }

    .article-hero .hero-bg {
        position: absolute;
        inset: 0;
        background-size: cover;
        background-position: center;
        opacity: .32;
    }

    .article-hero .hero-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(7, 11, 20, .55) 0%, rgba(7, 11, 20, .92) 100%);
    }

    .hero-title {
        font-size: clamp(2rem, 5vw, 3.4rem);
        line-height: 1.2;
        font-weight: 800;
        color: #f8fafc;
        text-shadow: 0 0 40px rgba(34, 211, 238, .3);
        letter-spacing: -.5px;
    }

    .badge-primary {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 6px 14px;
        border-radius: 999px;
        font-size: 13px;
        font-weight: 600;
        color: #a5f3fc;
        background: rgba(34, 211, 238, .1);
        border: 1px solid rgba(34, 211, 238, .35);
        box-shadow: inset 0 0 12px rgba(34, 211, 238, .06);
    }

    /* ========== Article Body ========== */
    .article-card {
        background: var(--card);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 40px;
        box-shadow: var(--shadow);
        transition: border-color .3s;
    }

    .article-card:hover {
        border-color: var(--border-light);
    }

    .article-content {
        font-size: 16px;
        line-height: 1.9;
        color: #cbd5e1;
    }

    .article-content h2 {
        font-size: 24px;
        font-weight: 700;
        color: #f1f5f9;
        margin-top: 36px;
        margin-bottom: 16px;
        padding-left: 16px;
        border-left: 4px solid var(--primary);
        border-radius: 0 6px 6px 0;
        line-height: 1.4;
    }

    .article-content h3 {
        font-size: 20px;
        font-weight: 600;
        color: #e2e8f0;
        margin-top: 28px;
        margin-bottom: 12px;
    }

    .article-content p {
        margin-bottom: 18px;
    }

    .article-content ul, .article-content ol {
        margin: 18px 0;
        padding-left: 26px;
    }

    .article-content li {
        margin-bottom: 8px;
    }

    .article-content li::marker {
        color: var(--primary);
    }

    .article-content img {
        border-radius: 12px;
        margin: 26px 0;
        box-shadow: var(--shadow);
    }

    .article-content blockquote {
        border-left: 3px solid var(--primary);
        background: rgba(34, 211, 238, .06);
        padding: 18px 22px;
        border-radius: 0 12px 12px 0;
        margin: 22px 0;
        color: #a7c0da;
    }

    .article-content a {
        color: var(--primary);
        text-decoration: underline;
        text-underline-offset: 3px;
    }

    .article-content a:hover {
        color: #a5f3fc;
    }

    .article-tags {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 8px;
        margin-top: 36px;
        padding-top: 24px;
        border-top: 1px solid var(--border);
    }

    .tag-item {
        display: inline-flex;
        align-items: center;
        gap: 5px;
        padding: 5px 14px;
        font-size: 13px;
        color: #9fb4d0;
        background: rgba(255, 255, 255, .04);
        border: 1px solid var(--border);
        border-radius: 999px;
        transition: border-color .3s, color .3s;
    }

    .tag-item:hover {
        border-color: rgba(34, 211, 238, .5);
        color: var(--primary);
    }

    /* ========== Sidebar ========== */
    .side-card {
        background: var(--card);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 26px;
        transition: border-color .3s, box-shadow .3s;
    }

    .side-card:hover {
        border-color: rgba(34, 211, 238, .3);
        box-shadow: 0 0 24px rgba(34, 211, 238, .06);
    }

    .side-title {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 17px;
        font-weight: 700;
        color: #e8eef7;
        margin-bottom: 18px;
        padding-bottom: 12px;
        border-bottom: 1px solid var(--border);
    }

    .side-title i {
        color: var(--primary);
        font-size: 15px;
    }

    .side-links {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .side-links li {
        margin-bottom: 4px;
    }

    .side-links a {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 11px 8px;
        border-radius: 8px;
        font-size: 14px;
        color: #b6c2d8;
        transition: background .3s, color .3s, padding-left .3s;
    }

    .side-links a i {
        font-size: 12px;
        color: var(--primary);
        opacity: .7;
    }

    .side-links a:hover {
        background: rgba(34, 211, 238, .06);
        color: var(--primary);
        padding-left: 14px;
    }

    .side-text {
        font-size: 14px;
        line-height: 1.8;
        color: var(--text-secondary);
        margin-bottom: 16px;
    }

    /* ========== CTA Strip ========== */
    .cta-strip {
        background: var(--bg-alt);
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
        position: relative;
        overflow: hidden;
    }

    .cta-strip::before {
        content: '';
        position: absolute;
        top: -60px;
        right: -60px;
        width: 260px;
        height: 260px;
        background: radial-gradient(circle, rgba(34, 211, 238, .12), transparent 65%);
        pointer-events: none;
    }

    .cta-strip-inner {
        background: linear-gradient(130deg, rgba(34, 211, 238, .1), rgba(52, 211, 153, .04));
        border: 1px solid rgba(34, 211, 238, .2);
        border-radius: 20px;
        padding: 42px;
    }

    .cta-strip h3 {
        font-size: 24px;
        font-weight: 700;
        color: #f1f5f9;
    }

    .cta-strip p {
        color: var(--text-secondary);
        margin-top: 8px;
        font-size: 15px;
    }

    .cta-strip .btn-neon {
        font-size: 15px;
        padding: 14px 32px;
    }

    /* ========== FAQ ========== */
    .faq-section {
        background: var(--bg);
    }

    .section-tag {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        font-weight: 600;
        color: var(--primary);
        letter-spacing: 1px;
        text-transform: uppercase;
        padding: 6px 16px;
        border-radius: 999px;
        background: rgba(34, 211, 238, .08);
        border: 1px solid rgba(34, 211, 238, .25);
    }

    .section-title {
        font-size: clamp(1.8rem, 3.5vw, 2.5rem);
        font-weight: 800;
        color: #f1f5f9;
        line-height: 1.25;
    }

    .faq-card {
        background: var(--card);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 26px;
        transition: border-color .3s, transform .3s, box-shadow .3s;
    }

    .faq-card:hover {
        border-color: rgba(34, 211, 238, .35);
        transform: translateY(-3px);
        box-shadow: 0 12px 32px rgba(0, 0, 0, .3);
    }

    .faq-q {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 16px;
        font-weight: 700;
        color: #e2e8f0;
        margin-bottom: 12px;
    }

    .faq-q i {
        color: var(--primary);
        font-size: 14px;
        width: 24px;
        height: 24px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 6px;
        background: rgba(34, 211, 238, .12);
    }

    .faq-a {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.8;
        padding-left: 36px;
    }

    /* ========== Final CTA ========== */
    .cta-final {
        background: var(--bg-alt);
        border-top: 1px solid var(--border);
        position: relative;
        overflow: hidden;
        padding: 80px 0;
    }

    .cta-final::before {
        content: '';
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-3.png');
        background-size: cover;
        background-position: center;
        opacity: .1;
        pointer-events: none;
    }

    .cta-final-inner {
        position: relative;
        z-index: 2;
    }

    .cta-final h2 {
        font-size: clamp(1.9rem, 4vw, 3rem);
        font-weight: 800;
        color: #f8fafc;
        text-shadow: 0 0 40px rgba(34, 211, 238, .25);
    }

    .cta-final p {
        color: var(--text-secondary);
        font-size: 16px;
        max-width: 760px;
        margin: 16px auto 0;
    }

    .cta-final .btn-neon {
        font-size: 15px;
        padding: 15px 36px;
    }

    .cta-final .btn-outline {
        font-size: 15px;
        padding: 15px 36px;
    }

    /* ========== Footer ========== */
    .site-footer {
        background: #060a12;
        border-top: 1px solid var(--border);
        padding: 60px 0 32px;
    }

    .site-footer .logo-text {
        font-size: 20px;
    }

    .f-title {
        font-size: 16px;
        font-weight: 700;
        color: #e2e8f0;
        margin-bottom: 16px;
        letter-spacing: .3px;
    }

    .f-links {
        list-style: none;
        padding: 0;
        margin: 0;
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .f-links a {
        font-size: 14px;
        color: var(--text-secondary);
        transition: color .3s;
    }

    .f-links a:hover {
        color: var(--primary);
    }

    .f-bottom {
        margin-top: 44px;
        padding-top: 24px;
        border-top: 1px solid rgba(28, 41, 70, .7);
        font-size: 13px;
        color: #5f7390;
    }

    /* ========== Responsive ========== */
    @media (max-width: 768px) {
        .article-card {
            padding: 24px;
        }
        .cta-strip-inner {
            padding: 32px 24px;
        }
        .faq-card {
            padding: 20px;
        }
        .container {
            padding: 0 18px;
        }
        .site-footer {
            padding: 44px 0 24px;
        }
    }

    @media (max-width: 520px) {
        .logo-text {
            font-size: 18px;
        }
        .article-content {
            font-size: 15px;
            line-height: 1.85;
        }
        .article-content h2 {
            font-size: 21px;
        }
        .article-content h3 {
            font-size: 18px;
        }
        .btn-neon, .btn-outline {
            padding: 10px 18px;
            font-size: 13px;
        }
        .cta-strip h3 {
            font-size: 20px;
        }
        .section-title {
            font-size: 1.6rem;
        }
        .faq-a {
            padding-left: 30px;
        }
    }

/* roulang page: category2 */
:root{
  --bg-primary:#070b13;
  --bg-secondary:#0d1420;
  --bg-card:rgba(15,23,42,.72);
  --neon:#00e5ff;
  --neon-2:#8b5cf6;
  --accent:#34d399;
  --text-main:#eef2f6;
  --text-sub:#93a1b5;
  --border-line:rgba(0,229,255,.16);
  --radius-lg:20px;
  --radius-md:12px;
  --shadow-glow:0 0 32px rgba(0,229,255,.12),0 8px 32px rgba(0,0,0,.35);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'PingFang SC','Microsoft YaHei','Helvetica Neue',sans-serif;
  background:var(--bg-primary);
  color:var(--text-main);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:all .25s ease}
button,input{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.logo-text{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;letter-spacing:.5px}
.logo-badge{
  width:36px;height:36px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(0,229,255,.18),rgba(139,92,246,.18));
  color:var(--neon);border:1px solid rgba(0,229,255,.35);
  box-shadow:0 0 18px rgba(0,229,255,.18);
  font-size:16px;
}
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(7,11,19,.82);
  backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(0,229,255,.14);
  box-shadow:0 2px 24px rgba(0,0,0,.45);
}
.site-header::after{
  content:"";display:block;height:2px;
  background:linear-gradient(90deg,transparent,rgba(0,229,255,.55),rgba(139,92,246,.55),transparent);
  position:absolute;left:0;right:0;bottom:-2px;
}
.nav-link{
  font-size:14px;font-weight:500;color:var(--text-sub);
  padding:6px 4px;position:relative;letter-spacing:.3px;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:-4px;height:2px;
  background:var(--neon);border-radius:2px;transition:all .3s ease;
  opacity:0;box-shadow:0 0 12px rgba(0,229,255,.7);
}
.nav-link:hover{color:var(--text-main)}
.nav-link:hover::after{left:0;right:0;opacity:1}
.nav-link.active{
  color:var(--neon);
  text-shadow:0 0 14px rgba(0,229,255,.55);
}
.nav-link.active::after{left:0;right:0;opacity:1}
.btn-neon{
  display:inline-flex;align-items:center;gap:8px;
  background:linear-gradient(135deg,rgba(0,229,255,.2),rgba(139,92,246,.2));
  border:1px solid rgba(0,229,255,.4);
  color:#f0fdff !important;border-radius:10px;
  font-weight:600;letter-spacing:.4px;
  box-shadow:0 0 16px rgba(0,229,255,.12);
  transition:all .28s ease;
  cursor:pointer;
}
.btn-neon:hover{
  transform:translateY(-2px);
  box-shadow:0 0 28px rgba(0,229,255,.28);
  border-color:rgba(0,229,255,.7);
  background:linear-gradient(135deg,rgba(0,229,255,.3),rgba(139,92,246,.3));
}
.btn-neon:active{transform:translateY(0)}
.btn-outline{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid rgba(139,92,246,.5);
  color:var(--text-main);border-radius:10px;
  font-weight:500;padding:10px 22px;
  transition:all .25s ease;background:rgba(139,92,246,.08);
}
.btn-outline:hover{border-color:var(--neon-2);background:rgba(139,92,246,.18);box-shadow:0 0 18px rgba(139,92,246,.18)}
.burger{
  display:flex;flex-direction:column;gap:5px;
  background:none;border:0;padding:10px;cursor:pointer;
}
.burger span{display:block;width:24px;height:2px;background:var(--text-main);border-radius:2px;transition:all .3s ease}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu{
  position:fixed;top:72px;left:0;right:0;z-index:99;
  background:rgba(7,11,19,.97);
  border-bottom:1px solid rgba(0,229,255,.18);
  padding:18px 24px 30px;
  display:none;
  box-shadow:0 24px 40px rgba(0,0,0,.5);
}
.mobile-menu.open{display:block}
.mobile-menu a{
  display:block;padding:14px 4px;font-size:15px;
  color:var(--text-sub);border-bottom:1px solid rgba(255,255,255,.06);
}
.mobile-menu a:hover{color:var(--neon);padding-left:10px}
.mobile-menu a.active{color:var(--neon)}

.page-banner{
  position:relative;
  background:linear-gradient(135deg,rgba(7,11,19,.9),rgba(13,20,32,.92)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding:110px 0 80px;
  text-align:center;
  border-bottom:1px solid rgba(0,229,255,.1);
  overflow:hidden;
}
.page-banner::before{
  content:"";position:absolute;top:-80px;left:50%;transform:translateX(-50%);
  width:520px;height:260px;background:radial-gradient(ellipse,rgba(0,229,255,.16),transparent 70%);
}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1.2px;color:var(--neon);
  border:1px solid rgba(0,229,255,.35);
  background:rgba(0,229,255,.06);
  border-radius:30px;padding:6px 18px;margin-bottom:18px;
  box-shadow:0 0 16px rgba(0,229,255,.1);
}
.banner-title{
  font-size:clamp(28px,4.5vw,48px);
  font-weight:800;line-height:1.25;letter-spacing:.5px;
  background:linear-gradient(135deg,#fff,#a5f3fc);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  margin-bottom:16px;
}
.banner-sub{
  max-width:640px;margin:0 auto 28px;
  color:var(--text-sub);font-size:15px;line-height:1.8;
}
.banner-search{
  max-width:560px;margin:0 auto;
  display:flex;background:rgba(13,20,32,.8);
  border:1px solid rgba(0,229,255,.25);border-radius:50px;
  padding:6px;box-shadow:0 4px 24px rgba(0,0,0,.3);
}
.banner-search input{
  flex:1;background:transparent;border:0;outline:none;
  color:var(--text-main);font-size:14px;padding:10px 18px;
}
.banner-search input::placeholder{color:#5a6a7d}
.banner-search button{
  background:linear-gradient(135deg,rgba(0,229,255,.25),rgba(139,92,246,.25));
  border:1px solid rgba(0,229,255,.4);color:#fff;
  border-radius:40px;padding:10px 24px;font-size:14px;
  cursor:pointer;transition:all .25s ease;
}
.banner-search button:hover{background:rgba(0,229,255,.35);box-shadow:0 0 18px rgba(0,229,255,.25)}
.section{padding:80px 0}
.section-alt{background:var(--bg-secondary)}
.section-head{text-align:center;max-width:680px;margin:0 auto 50px}
.section-top{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:1px;
  color:var(--neon);border:1px solid rgba(0,229,255,.25);
  border-radius:30px;padding:4px 16px;margin-bottom:12px;
  background:rgba(0,229,255,.05);
}
.section-title{font-size:clamp(24px,3.2vw,34px);font-weight:700;line-height:1.35;margin-bottom:12px}
.section-desc{color:var(--text-sub);font-size:15px}
.hr-line{
  width:72px;height:2px;margin:20px auto 0;
  background:linear-gradient(90deg,var(--neon),var(--neon-2));
  border-radius:4px;box-shadow:0 0 12px rgba(0,229,255,.4);
}

.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.service-card{
  position:relative;
  background:var(--bg-card);
  border:1px solid rgba(255,255,255,.07);
  border-radius:var(--radius-lg);
  padding:32px 24px 28px;
  transition:all .3s ease;
  overflow:hidden;
}
.service-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--neon),transparent);
  opacity:0;transition:opacity .3s ease;
}
.service-card:hover{
  transform:translateY(-6px);
  border-color:rgba(0,229,255,.35);
  box-shadow:var(--shadow-glow);
}
.service-card:hover::before{opacity:1}
.service-icon{
  width:56px;height:56px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-size:22px;color:var(--neon);
  background:rgba(0,229,255,.1);
  border:1px solid rgba(0,229,255,.25);
  margin-bottom:20px;
  box-shadow:0 0 16px rgba(0,229,255,.1);
}
.service-card h3{font-size:17px;font-weight:700;margin-bottom:10px;letter-spacing:.3px}
.service-card p{font-size:13px;color:var(--text-sub);line-height:1.75}
.service-card i.fa-arrow-right{
  margin-top:18px;font-size:12px;color:rgba(0,229,255,.5);
  display:inline-block;transition:all .25s ease;
}
.service-card:hover i.fa-arrow-right{transform:translateX(6px);color:var(--neon)}

.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;position:relative}
.step-item{text-align:center;position:relative;padding:0 12px}
.step-num{
  width:64px;height:64px;line-height:64px;margin:0 auto 18px;
  border-radius:50%;font-size:20px;font-weight:800;
  color:var(--neon);background:rgba(0,229,255,.07);
  border:1px solid rgba(0,229,255,.35);
  box-shadow:0 0 20px rgba(0,229,255,.15);
  position:relative;z-index:2;
}
.step-item:not(:last-child)::after{
  content:"";position:absolute;top:32px;left:calc(50% + 44px);right:calc(-50% + 44px);
  height:1px;background:linear-gradient(90deg,rgba(0,229,255,.4),rgba(139,92,246,.2));
}
.step-item h4{font-size:16px;font-weight:700;margin-bottom:8px}
.step-item p{font-size:13px;color:var(--text-sub);max-width:220px;margin:0 auto}

.help-card{
  display:flex;gap:22px;
  background:var(--bg-card);
  border:1px solid rgba(255,255,255,.07);
  border-radius:var(--radius-lg);
  padding:22px;
  transition:all .3s ease;
  margin-bottom:18px;
}
.help-card:hover{
  border-color:rgba(0,229,255,.3);
  transform:translateX(6px);
  box-shadow:0 8px 28px rgba(0,0,0,.3);
}
.help-thumb{
  width:180px;height:118px;border-radius:14px;overflow:hidden;
  flex-shrink:0;position:relative;
  background:#10192b;
}
.help-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.help-card:hover .help-thumb img{transform:scale(1.06)}
.help-tag{
  position:absolute;top:10px;left:10px;
  font-size:11px;color:#fff;
  background:rgba(7,11,19,.7);
  backdrop-filter:blur(4px);
  border:1px solid rgba(0,229,255,.3);
  border-radius:20px;padding:3px 12px;
  z-index:2;
}
.help-body{flex:1;display:flex;flex-direction:column;justify-content:center}
.help-body h3{font-size:17px;font-weight:700;margin-bottom:8px;transition:color .25s ease}
.help-card:hover .help-body h3{color:var(--neon)}
.help-body p{font-size:13px;color:var(--text-sub);line-height:1.7;margin-bottom:10px}
.help-meta{display:flex;gap:18px;font-size:12px;color:#687891}

.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.stat-block{
  text-align:center;padding:38px 24px;
  background:linear-gradient(145deg,rgba(13,20,32,.9),rgba(7,11,19,.9));
  border:1px solid rgba(0,229,255,.14);
  border-radius:var(--radius-lg);
  transition:all .3s ease;
}
.stat-block:hover{border-color:rgba(0,229,255,.4);box-shadow:var(--shadow-glow);transform:translateY(-4px)}
.stat-num{
  font-size:40px;font-weight:800;
  background:linear-gradient(135deg,var(--neon),var(--neon-2));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  line-height:1.2;margin-bottom:8px;
}
.stat-label{font-size:14px;color:var(--text-sub);letter-spacing:.3px}

.faq-wrap{max-width:780px;margin:0 auto}
.faq-item{
  background:var(--bg-card);
  border:1px solid rgba(255,255,255,.07);
  border-radius:var(--radius-md);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .3s ease;
}
.faq-item:hover{border-color:rgba(0,229,255,.25)}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:20px 24px;
  font-size:15px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;transition:background .25s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .faq-icon{
  flex-shrink:0;width:30px;height:30px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(0,229,255,.1);border:1px solid rgba(0,229,255,.25);
  color:var(--neon);font-size:13px;transition:all .3s ease;
}
.faq-item[open] summary .faq-icon{transform:rotate(180deg);background:rgba(0,229,255,.25)}
.faq-item[open] summary{border-bottom:1px solid rgba(0,229,255,.12)}
.faq-body{padding:6px 24px 20px;color:var(--text-sub);font-size:14px;line-height:1.8}

.cta-panel{
  background:linear-gradient(135deg,rgba(7,11,19,.92),rgba(13,20,32,.95)),url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  border:1px solid rgba(0,229,255,.18);
  border-radius:28px;
  padding:70px 40px;
  text-align:center;
  position:relative;
  overflow:hidden;
}
.cta-panel::before{
  content:"";position:absolute;top:-60px;right:-60px;
  width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,229,255,.14),transparent 70%);
}
.cta-panel::after{
  content:"";position:absolute;bottom:-80px;left:-80px;
  width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(139,92,246,.12),transparent 70%);
}
.cta-title{font-size:clamp(22px,3vw,32px);font-weight:800;margin-bottom:12px}
.cta-desc{color:var(--text-sub);font-size:15px;max-width:560px;margin:0 auto 30px}
.cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

.site-footer{
  border-top:1px solid rgba(0,229,255,.14);
  padding:64px 0 32px;
  background:var(--bg-secondary);
  margin-top:80px;
  position:relative;
}
.site-footer::after{
  content:"";display:block;height:2px;
  background:linear-gradient(90deg,transparent,rgba(0,229,255,.6),rgba(139,92,246,.6),transparent);
  position:absolute;top:-2px;left:0;right:0;
}
.f-title{
  font-size:15px;font-weight:700;margin-bottom:18px;
  padding-bottom:12px;position:relative;
}
.f-title::after{
  content:"";position:absolute;left:0;bottom:0;width:32px;height:2px;
  background:var(--neon);box-shadow:0 0 10px rgba(0,229,255,.5);
  border-radius:2px;
}
.f-links{list-style:none}
.f-links li{margin-bottom:10px}
.f-links a{font-size:13px;color:var(--text-sub);transition:all .25s ease}
.f-links a:hover{color:var(--neon);padding-left:6px}
.f-bottom{
  border-top:1px solid rgba(255,255,255,.06);
  margin-top:44px;padding-top:24px;
  font-size:13px;color:#5a6a7d;
}

@media(max-width:1024px){
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .step-grid{grid-template-columns:repeat(2,1fr);gap:40px 20px}
  .step-item:not(:last-child)::after{display:none}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .page-banner{padding:80px 0 60px}
  .section{padding:56px 0}
  .service-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .service-card{padding:24px 18px}
  .help-card{flex-direction:column}
  .help-thumb{width:100%;height:160px}
}
@media(max-width:520px){
  .service-grid{grid-template-columns:1fr}
  .step-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr}
  .cta-panel{padding:50px 24px}
  .container{padding:0 18px}
  .banner-search{flex-direction:column;border-radius:16px}
  .banner-search button{border-radius:10px;margin-top:6px}
}