/* roulang page: index */
:root{
  --bg-primary:#0B0F1A;
  --bg-secondary:#131A2A;
  --bg-panel:#1A2234;
  --accent-main:#22E5A0;
  --accent-secondary:#7A7CFF;
  --accent-gold:#FFB84D;
  --text-main:#E8EDF5;
  --text-sub:#93A0B4;
  --border-subtle:rgba(255,255,255,0.06);
  --border-hover:rgba(34,229,160,0.4);
  --radius-card:16px;
  --radius-btn:10px;
  --radius-input:12px;
  --shadow-card:0 4px 20px rgba(0,0,0,0.25);
  --shadow-hover:0 12px 40px rgba(0,0,0,0.4);
  --font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Inter",sans-serif;
  --header-h:68px;
  --container-w:1200px;
  --space-section:100px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  font-family:var(--font-family);
  background:var(--bg-primary);
  color:var(--text-main);
  line-height:1.75;
  font-size:15px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .25s ease;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input{font-family:inherit;border:none;outline:none;background:none;color:inherit;}
ul,ol{list-style:none;}
.container{max-width:var(--container-w);margin:0 auto;padding:0 24px;}
.section{padding:var(--space-section) 0;}
.section-head{text-align:center;margin-bottom:56px;}
.section-head .tag{
  display:inline-block;font-size:12px;font-weight:600;color:var(--accent-main);
  background:rgba(34,229,160,.1);border:1px solid rgba(34,229,160,.2);
  border-radius:999px;padding:4px 16px;margin-bottom:16px;letter-spacing:1px;
}
.section-head h2{
  font-size:34px;font-weight:700;line-height:1.3;letter-spacing:-.5px;
}
.section-head p{color:var(--text-sub);margin-top:14px;font-size:15px;max-width:640px;margin-left:auto;margin-right:auto;}
h1,h2,h3,h4{font-weight:700;line-height:1.25;}

/* ===== Header / Nav ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;height:var(--header-h);
  background:rgba(11,15,26,.8);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--border-subtle);z-index:100;
  transition:box-shadow .3s ease,background .3s ease;
}
.site-header.scrolled{background:rgba(11,15,26,.95);box-shadow:0 8px 32px rgba(0,0,0,.4);}
.nav-inner{
  max-width:var(--container-w);margin:0 auto;padding:0 24px;
  display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:24px;
}
.logo{
  display:flex;align-items:center;gap:10px;flex-shrink:0;
}
.logo-mark{
  font-size:22px;font-weight:700;color:var(--text-main);letter-spacing:-.5px;line-height:1;
}
.logo-dot{
  width:8px;height:8px;border-radius:50%;background:var(--accent-main);
  box-shadow:0 0 12px rgba(34,229,160,.6);position:relative;
}
.logo-dot::after{
  content:'';position:absolute;inset:-4px;border-radius:50%;
  border:1px solid rgba(34,229,160,.3);animation:pulse 2s infinite;
}
@keyframes pulse{0%,100%{transform:scale(1);opacity:1;}50%{transform:scale(1.5);opacity:0;}}
.logo-sub{
  font-size:11px;color:var(--text-sub);letter-spacing:1px;border-left:1px solid var(--border-subtle);
  padding-left:10px;line-height:1.2;font-weight:400;
}
.nav-links{
  display:flex;align-items:center;gap:28px;
}
.nav-links a{
  font-size:14px;font-weight:500;color:var(--text-sub);position:relative;padding:6px 2px;
  transition:color .25s ease;
}
.nav-links a::after{
  content:'';position:absolute;left:0;bottom:0;width:0;height:2px;
  background:var(--accent-main);border-radius:2px;transition:width .3s ease;
}
.nav-links a:hover{color:var(--text-main);}
.nav-links a:hover::after{width:100%;}
.nav-links a.active{color:var(--accent-main);}
.nav-right{
  display:flex;align-items:center;gap:14px;flex-shrink:0;
}
.nav-search{
  position:relative;
}
.search-box{
  display:flex;align-items:center;gap:8px;width:220px;height:40px;
  background:var(--bg-panel);border-radius:10px;padding:0 14px;
  border:1px solid transparent;transition:border-color .3s,box-shadow .3s;
}
.search-box svg{flex-shrink:0;color:var(--text-sub);}
.search-box input{
  font-size:13px;color:var(--text-main);width:100%;background:transparent;
}
.search-box input::placeholder{color:var(--text-sub);}
.search-box:focus-within{
  border-color:rgba(34,229,160,.6);
  box-shadow:0 0 0 3px rgba(34,229,160,.15),0 4px 20px rgba(0,0,0,.3);
}
.search-dropdown{
  position:absolute;top:48px;left:0;right:0;background:var(--bg-secondary);
  border:1px solid var(--border-subtle);border-radius:12px;padding:8px;
  box-shadow:0 20px 60px rgba(0,0,0,.5);opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:all .3s ease;z-index:120;
}
.search-dropdown.open{opacity:1;visibility:visible;transform:translateY(0);}
.search-dd-item{
  display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:8px;
  color:var(--text-sub);font-size:13px;transition:background .2s,color .2s;
}
.search-dd-item:hover{background:rgba(34,229,160,.08);color:var(--text-main);}
.search-dd-item .dd-icon{
  width:28px;height:28px;border-radius:6px;background:rgba(34,229,160,.1);
  display:flex;align-items:center;justify-content:center;color:var(--accent-main);
}
.search-dd-item .dd-kbd{
  margin-left:auto;font-size:11px;color:var(--text-sub);border:1px solid var(--border-subtle);
  border-radius:4px;padding:1px 6px;background:rgba(0,0,0,.2);
}
.nav-bookmark{
  width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:var(--bg-panel);border:1px solid transparent;
  color:var(--text-sub);transition:all .25s ease;cursor:pointer;
}
.nav-bookmark:hover{color:var(--accent-gold);border-color:rgba(255,184,77,.3);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-weight:600;font-size:14px;
  transition:all .3s ease;white-space:nowrap;
}
.btn-primary{
  background:var(--accent-main);color:var(--bg-primary);
  padding:0 28px;height:48px;box-shadow:0 4px 20px rgba(34,229,160,.25);
}
.btn-primary:hover{
  filter:brightness(1.1);transform:translateY(-2px);
  box-shadow:0 8px 32px rgba(34,229,160,.4);
}
.btn-outline{
  background:transparent;border:1px solid rgba(255,255,255,.15);color:var(--text-main);
  padding:0 28px;height:48px;
}
.btn-outline:hover{border-color:var(--accent-main);color:var(--accent-main);transform:translateY(-2px);}
.btn-ghost{
  background:transparent;color:var(--text-sub);padding:4px 8px;height:40px;
}
.btn-ghost:hover{color:var(--accent-main);}
.nav-cta{height:40px;padding:0 20px;background:var(--accent-main);color:var(--bg-primary);border-radius:8px;font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px;}
.nav-cta:hover{filter:brightness(1.1);transform:translateY(-1px);box-shadow:0 6px 20px rgba(34,229,160,.3);}
.hamburger{
  display:none;width:40px;height:40px;border-radius:10px;align-items:center;justify-content:center;
  background:var(--bg-panel);cursor:pointer;
}
.hamburger span{
  display:block;width:18px;height:2px;background:var(--text-main);
  margin:3px 0;border-radius:2px;transition:all .3s ease;
}
.hamburger.active span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.hamburger.active span:nth-child(2){opacity:0;}
.hamburger.active span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}
.mobile-menu{
  display:none;position:fixed;top:var(--header-h);left:0;right:0;bottom:0;
  background:var(--bg-secondary);z-index:99;padding:32px 24px;overflow-y:auto;
  transform:translateX(100%);transition:transform .4s cubic-bezier(.4,0,.2,1);
}
.mobile-menu.open{transform:translateX(0);}
.mobile-menu a{
  display:block;padding:16px 0;font-size:16px;font-weight:500;color:var(--text-main);
  border-bottom:1px solid var(--border-subtle);
}
.mobile-menu a:hover{color:var(--accent-main);}

/* ===== Hero ===== */
.hero{
  position:relative;padding-top:calc(var(--header-h) + 80px);
  padding-bottom:80px;min-height:90vh;display:flex;align-items:center;
  background:
    radial-gradient(ellipse 600px 400px at 8% 20%,rgba(34,229,160,.08),transparent),
    radial-gradient(ellipse 700px 500px at 85% 70%,rgba(122,124,255,.06),transparent),
    var(--bg-primary);
  overflow:hidden;
}
.hero::before{
  content:'';position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.08;pointer-events:none;
}
.hero-inner{
  position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center;
  max-width:var(--container-w);margin:0 auto;padding:0 24px;width:100%;
}
.hero-content .hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;color:var(--accent-main);
  background:rgba(34,229,160,.1);border:1px solid rgba(34,229,160,.2);
  border-radius:999px;padding:6px 18px;margin-bottom:24px;
}
.hero-content .hero-tag .status-dot{
  width:6px;height:6px;border-radius:50%;background:var(--accent-main);
  box-shadow:0 0 8px rgba(34,229,160,.8);animation:pulse 2s infinite;
}
.hero-content h1{
  font-size:52px;font-weight:700;letter-spacing:-1px;line-height:1.2;
  margin-bottom:20px;
}
.hero-content h1 .highlight{
  background:linear-gradient(135deg,var(--accent-main),var(--accent-secondary));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero-content .hero-sub{
  font-size:17px;color:var(--text-sub);line-height:1.7;margin-bottom:36px;max-width:520px;
}
.hero-btns{display:flex;gap:16px;margin-bottom:36px;flex-wrap:wrap;}
.hero-trust{display:flex;gap:24px;flex-wrap:wrap;}
.hero-trust .trust-item{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-sub);
}
.hero-trust .trust-item svg{color:var(--accent-main);flex-shrink:0;}
.hero-visual{position:relative;}
.hero-cover{
  border-radius:20px;overflow:hidden;position:relative;
  box-shadow:0 20px 80px rgba(0,0,0,.5),0 0 60px rgba(34,229,160,.1);
  border:1px solid var(--border-subtle);
}
.hero-cover img{width:100%;height:auto;display:block;}
.hero-status-card{
  position:absolute;left:-20px;bottom:24px;background:var(--bg-panel);
  border:1px solid rgba(255,255,255,.1);border-radius:12px;
  padding:12px 20px;display:flex;align-items:center;gap:12px;
  box-shadow:0 8px 32px rgba(0,0,0,.4);
}
.hero-status-card .online-dot{
  width:10px;height:10px;border-radius:50%;
  background:var(--accent-main);box-shadow:0 0 10px rgba(34,229,160,.8);
}
.hero-status-card .status-text{font-size:13px;color:var(--text-main);font-weight:600;}
.hero-status-card .status-sub{font-size:11px;color:var(--text-sub);}

/* ===== Features ===== */
.features{background:var(--bg-primary);}
.features-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
}
.feature-card{
  background:var(--bg-secondary);border:1px solid var(--border-subtle);
  border-radius:var(--radius-card);padding:28px;position:relative;overflow:hidden;
  transition:all .3s ease;
}
.feature-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--accent-main),transparent);
  opacity:0;transition:opacity .3s;
}
.feature-card:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-hover);
  border-color:var(--border-hover);
}
.feature-card:hover::before{opacity:1;}
.feature-icon{
  width:48px;height:48px;border-radius:12px;
  background:rgba(34,229,160,.1);display:flex;align-items:center;justify-content:center;
  margin-bottom:20px;color:var(--accent-main);
}
.feature-card h3{font-size:18px;font-weight:600;margin-bottom:10px;}
.feature-card p{font-size:14px;color:var(--text-sub);line-height:1.6;}
.feature-card .feature-link{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--accent-main);
  margin-top:16px;font-weight:500;transition:gap .3s ease;
}
.feature-card .feature-link:hover{gap:10px;}

/* ===== Demo ===== */
.demo{
  background:var(--bg-secondary);
  border-top:1px solid var(--border-subtle);border-bottom:1px solid var(--border-subtle);
}
.demo-wrap{
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
}
.demo-window{
  background:var(--bg-primary);border-radius:16px;overflow:hidden;
  border:1px solid var(--border-subtle);
  box-shadow:0 24px 80px rgba(0,0,0,.4);
}
.demo-window .window-bar{
  display:flex;align-items:center;gap:8px;padding:14px 20px;
  background:var(--bg-panel);border-bottom:1px solid var(--border-subtle);
}
.demo-window .window-bar .dot{
  width:10px;height:10px;border-radius:50%;
}
.demo-window .window-bar .dot:nth-child(1){background:#FF5F57;}
.demo-window .window-bar .dot:nth-child(2){background:#FEBC2E;}
.demo-window .window-bar .dot:nth-child(3){background:#28C840;}
.demo-window .window-bar .bar-title{
  margin-left:16px;font-size:12px;color:var(--text-sub);
  background:rgba(255,255,255,.05);border-radius:6px;padding:4px 14px;
  flex:1;max-width:240px;
}
.demo-window .window-body img{
  width:100%;height:auto;display:block;
}
.demo-right .demo-points{display:flex;flex-direction:column;gap:24px;}
.demo-point{
  display:flex;gap:14px;align-items:flex-start;
}
.demo-point .check{
  flex-shrink:0;width:22px;height:22px;border-radius:50%;
  background:rgba(34,229,160,.15);color:var(--accent-main);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
  margin-top:3px;
}
.demo-point h4{font-size:16px;font-weight:600;margin-bottom:4px;}
.demo-point p{font-size:14px;color:var(--text-sub);line-height:1.6;}

/* ===== Proof / Stats ===== */
.proof{background:var(--bg-primary);}
.stats-row{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-bottom:64px;
}
.stat-item{
  text-align:center;padding:20px;position:relative;
}
.stat-item:not(:last-child)::after{
  content:'';position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:1px;height:40px;background:var(--border-subtle);
}
.stat-num{
  font-size:40px;font-weight:700;color:var(--accent-main);font-family:'Inter',sans-serif;
  line-height:1.2;
}
.stat-label{font-size:13px;color:var(--text-sub);margin-top:8px;}
.testimonials-row{
  display:grid;grid-template-columns:repeat(3,1fr);gap:28px;
  align-items:flex-start;
}
.testimonial-card{
  background:var(--bg-secondary);border:1px solid var(--border-subtle);
  border-radius:var(--radius-card);padding:28px;position:relative;
  transition:all .3s ease;
}
.testimonial-card:nth-child(2){transform:translateY(16px);}
.testimonial-card:hover{
  transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--border-hover);
}
.testimonial-card .stars{
  display:flex;gap:2px;color:var(--accent-main);font-size:16px;margin-bottom:16px;
}
.testimonial-card blockquote{
  font-size:14px;color:var(--text-main);line-height:1.65;
  padding-left:16px;border-left:3px solid var(--accent-main);
  margin-bottom:16px;
}
.testimonial-card .author{
  display:flex;align-items:center;gap:10px;
}
.testimonial-card .author-avatar{
  width:36px;height:36px;border-radius:50%;
  background:linear-gradient(135deg,var(--accent-main),var(--accent-secondary));
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;color:#fff;
}
.testimonial-card .author-name{font-size:13px;font-weight:600;color:var(--text-main);}
.testimonial-card .author-role{font-size:11px;color:var(--text-sub);}

/* ===== Pricing ===== */
.pricing{
  background:var(--bg-secondary);
  border-top:1px solid var(--border-subtle);border-bottom:1px solid var(--border-subtle);
}
.pricing-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:32px;align-items:stretch;
}
.pricing-card{
  background:var(--bg-primary);border:1.5px solid var(--border-subtle);
  border-radius:20px;padding:36px 28px;position:relative;display:flex;flex-direction:column;
  transition:all .3s ease;
}
.pricing-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.pricing-card.featured{
  border-color:var(--accent-main);transform:scale(1.03);z-index:2;
  box-shadow:0 20px 60px rgba(34,229,160,.15);
}
.pricing-card.featured:hover{transform:scale(1.03) translateY(-4px);}
.pricing-badge{
  position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  background:var(--accent-gold);color:var(--bg-primary);font-size:11px;font-weight:700;
  padding:4px 16px;border-radius:999px;letter-spacing:1px;
  box-shadow:0 4px 16px rgba(255,184,77,.4);
}
.pricing-card .plan-name{font-size:18px;font-weight:600;color:var(--text-main);margin-bottom:8px;}
.pricing-card .plan-desc{font-size:13px;color:var(--text-sub);margin-bottom:24px;}
.pricing-card .price{font-family:'Inter',sans-serif;font-size:48px;font-weight:700;color:var(--text-main);margin-bottom:24px;}
.pricing-card .price .unit{font-size:14px;color:var(--text-sub);font-weight:400;margin-left:4px;}
.pricing-card .price .per{font-size:14px;color:var(--text-sub);font-weight:400;}
.pricing-features{flex:1;margin-bottom:32px;}
.pricing-features li{
  display:flex;align-items:center;gap:10px;padding:7px 0;
  font-size:14px;color:var(--text-sub);
}
.pricing-features li .check-circle{
  flex-shrink:0;width:18px;height:18px;border-radius:50%;
  background:rgba(34,229,160,.15);color:var(--accent-main);
  display:flex;align-items:center;justify-content:center;font-size:11px;
}
.pricing-card .btn{width:100%;}
.pricing-card.featured .btn{background:var(--accent-main);color:var(--bg-primary);}
.pricing-card:not(.featured) .btn{
  background:transparent;border:1px solid rgba(255,255,255,.15);color:var(--text-main);height:48px;
}
.pricing-card:not(.featured) .btn:hover{border-color:var(--accent-main);color:var(--accent-main);transform:translateY(-2px);}

/* ===== FAQ ===== */
.faq{background:var(--bg-primary);}
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--bg-secondary);border-radius:12px;border:1px solid var(--border-subtle);
  overflow:hidden;position:relative;transition:border-color .3s ease;
}
.faq-item.open{border-color:rgba(34,229,160,.2);}
.faq-item.open::before{
  content:'';position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--accent-main);border-radius:0 3px 3px 0;
}
.faq-question{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 28px;cursor:pointer;gap:16px;min-height:60px;
}
.faq-question h4{font-size:16px;font-weight:600;color:var(--text-main);}
.faq-toggle{
  flex-shrink:0;width:24px;height:24px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:var(--text-sub);transition:transform .3s ease;
  border:1px solid var(--border-subtle);
}
.faq-item.open .faq-toggle{transform:rotate(180deg);color:var(--accent-main);border-color:var(--accent-main);}
.faq-answer{
  max-height:0;overflow:hidden;transition:max-height .4s ease;
}
.faq-answer-inner{
  padding:0 28px 24px;color:var(--text-sub);font-size:14px;line-height:1.75;
}

/* ===== News / CMS ===== */
.news{background:var(--bg-primary);position:relative;}
.news-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:28px;
}
.news-card{
  background:var(--bg-secondary);border:1px solid var(--border-subtle);
  border-radius:var(--radius-card);overflow:hidden;display:flex;flex-direction:column;
  transition:all .3s ease;
}
.news-card:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--border-hover);
}
.news-cover{
  position:relative;aspect-ratio:16/9;overflow:hidden;border-radius:12px 12px 0 0;
}
.news-cover img{
  width:100%;height:100%;object-fit:cover;transition:transform .4s ease;
}
.news-card:hover .news-cover img{transform:scale(1.04);}
.news-cover .news-tag{
  position:absolute;top:12px;left:12px;background:rgba(11,15,26,.8);
  backdrop-filter:blur(6px);color:var(--accent-main);font-size:11px;font-weight:600;
  padding:4px 12px;border-radius:999px;border:1px solid rgba(34,229,160,.3);
}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.news-body h3{
  font-size:16px;font-weight:600;line-height:1.45;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body h3 a{transition:color .3s;}
.news-body h3 a:hover{color:var(--accent-main);}
.news-excerpt{
  font-size:14px;color:var(--text-sub);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:14px;flex:1;
}
.news-meta{
  display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-sub);
  border-top:1px solid var(--border-subtle);padding-top:14px;
}
.news-meta .news-link{
  margin-left:auto;color:var(--accent-main);font-weight:500;
  display:inline-flex;align-items:center;gap:4px;transition:gap .3s ease;
}
.news-meta .news-link:hover{gap:8px;}
.news-empty{
  grid-column:1/-1;text-align:center;padding:80px 24px;
  background:var(--bg-secondary);border:1px dashed var(--border-subtle);
  border-radius:var(--radius-card);
}
.news-empty .empty-icon{
  font-size:48px;margin-bottom:16px;color:var(--text-sub);
}
.news-empty p{color:var(--text-sub);font-size:15px;}

/* ===== CTA Banner ===== */
.cta-banner{
  background:linear-gradient(135deg,rgba(34,229,160,.06),rgba(122,124,255,.04));
  border:1px solid var(--border-subtle);border-radius:24px;
  padding:64px 48px;text-align:center;position:relative;overflow:hidden;
}
.cta-banner::before{
  content:'';position:absolute;top:-60px;right:-60px;width:200px;height:200px;
  background:radial-gradient(circle,rgba(34,229,160,.15),transparent);
}
.cta-banner h2{
  font-size:28px;font-weight:700;margin-bottom:14px;
}
.cta-banner p{
  color:var(--text-sub);font-size:15px;max-width:560px;margin:0 auto 32px;
}
.cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}

/* ===== Footer ===== */
.site-footer{
  background:var(--bg-secondary);border-top:1px solid var(--border-subtle);
  padding:80px 0 0;margin-top:100px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:56px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{
  font-size:13px;color:var(--text-sub);line-height:1.7;max-width:260px;
}
.footer-col h4{
  font-size:15px;font-weight:600;margin-bottom:20px;color:var(--text-main);
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{
  font-size:13px;color:var(--text-sub);transition:color .25s,padding-left .25s;
}
.footer-col ul li a:hover{color:var(--accent-main);padding-left:4px;}
.footer-bottom{
  border-top:1px solid var(--border-subtle);padding:24px 0;
  display:flex;align-items:center;justify-content:space-between;
}
.footer-bottom .copyright{font-size:13px;color:var(--text-sub);}
.back-top{
  width:40px;height:40px;border-radius:50%;background:var(--accent-main);
  color:var(--bg-primary);display:flex;align-items:center;justify-content:center;
  font-size:16px;cursor:pointer;transition:all .3s ease;
  border:none;
}
.back-top:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(34,229,160,.4);}

/* ===== Floating CTA ===== */
.floating-cta-wrap{
  position:fixed;bottom:32px;right:32px;z-index:200;
}
.floating-btn{
  width:64px;height:64px;border-radius:50%;background:var(--bg-secondary);
  border:2px solid var(--accent-main);color:var(--accent-main);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 32px rgba(0,0,0,.4),0 0 24px rgba(34,229,160,.15);
  cursor:pointer;transition:all .3s ease;animation:floatY 3s infinite;
}
@keyframes floatY{
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(-6px);}
}
.floating-btn:hover{box-shadow:0 12px 40px rgba(0,0,0,.5),0 0 32px rgba(34,229,160,.3);}
.floating-options{
  position:absolute;bottom:72px;right:0;background:var(--bg-secondary);
  border:1px solid var(--border-subtle);border-radius:16px;
  padding:12px;min-width:160px;box-shadow:0 20px 60px rgba(0,0,0,.5);
  opacity:0;visibility:hidden;transform:translateY(10px) scale(.9);
  transition:all .3s ease;
}
.floating-options.open{opacity:1;visibility:visible;transform:translateY(0) scale(1);}
.floating-options a{
  display:flex;align-items:center;gap:10px;padding:12px;
  color:var(--text-sub);border-radius:10px;font-size:14px;
  transition:background .2s,color .2s;
}
.floating-options a:hover{background:rgba(34,229,160,.08);color:var(--text-main);}
.floating-options a svg{color:var(--accent-main);}
.floating-cta-wrap.hidden{display:none;}

/* ===== Mobile bottom bar ===== */
.mobile-bottom-bar{
  display:none;position:fixed;bottom:0;left:0;right:0;z-index:200;
  background:var(--bg-secondary);border-top:1px solid var(--border-subtle);
  padding:8px 16px;grid-template-columns:1fr 1fr;gap:12px;
  box-shadow:0 -8px 32px rgba(0,0,0,.3);
}
.mobile-bottom-bar .btn{
  height:44px;font-size:14px;border-radius:10px;width:100%;
}
.mobile-bottom-bar .btn-primary{background:var(--accent-main);color:var(--bg-primary);}
.mobile-bottom-bar .btn-outline{border-color:var(--border-subtle);color:var(--text-main);}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .nav-links{display:none;}
  .nav-search{display:none;}
  .nav-bookmark{display:none;}
  .hamburger{display:flex;}
  .mobile-menu{display:block;}
  .hero-inner{grid-template-columns:1fr;gap:48px;text-align:center;}
  .hero-content .hero-sub{margin-left:auto;margin-right:auto;}
  .hero-btns{justify-content:center;}
  .hero-trust{justify-content:center;}
  .hero-status-card{left:50%;transform:translateX(-50%);}
  .features-grid{grid-template-columns:repeat(2,1fr);}
  .demo-wrap{grid-template-columns:1fr;}
  .stats-row{grid-template-columns:repeat(2,1fr);gap:24px 0;}
  .stat-item:nth-child(2)::after{display:none;}
  .testimonials-row{grid-template-columns:1fr;max-width:480px;margin:0 auto;}
  .testimonial-card:nth-child(2){transform:none;}
  .pricing-grid{grid-template-columns:1fr;max-width:420px;margin:0 auto;}
  .pricing-card.featured{transform:none;}
  .pricing-card.featured:hover{transform:translateY(-4px);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .floating-cta-wrap{display:none;}
  .mobile-bottom-bar{display:grid;}
}
@media(max-width:767px){
  :root{--space-section:64px;}
  .section-head h2{font-size:26px;}
  .hero{padding-top:calc(var(--header-h) + 48px);padding-bottom:48px;min-height:auto;}
  .hero-content h1{font-size:34px;}
  .hero-content .hero-sub{font-size:15px;}
  .hero-btns{flex-direction:column;}
  .hero-btns .btn{width:100%;}
  .features-grid{grid-template-columns:1fr;}
  .stats-row{grid-template-columns:1fr 1fr;}
  .stat-item{padding:16px 8px;}
  .stat-item:nth-child(2)::after{display:none;}
  .stat-num{font-size:30px;}
  .news-grid{grid-template-columns:1fr;}
  .pricing-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:16px;text-align:center;}
  .cta-banner{padding:40px 24px;}
  .cta-banner h2{font-size:22px;}
  .cta-btns{flex-direction:column;}
  .cta-btns .btn{width:100%;}
  .search-dropdown{display:none;}
  .nav-cta{height:38px;padding:0 14px;font-size:13px;}
  .mobile-menu{position:fixed;}
  .mobile-menu .container{padding:0;}
  .container{padding:0 16px;}
  .demo-wrap{gap:32px;}
  .demo-point h4{font-size:15px;}
  .demo-point p{font-size:13px;}
  .testimonial-card{padding:24px;}
}

/* roulang page: category1 */
/* ===== Design Variables ===== */
:root {
  --bg: #0B0F1A;
  --bg-panel: #131A2A;
  --bg-soft: #1A2234;
  --accent: #22E5A0;
  --accent-2: #7A7CFF;
  --amber: #FFB84D;
  --text: #E8EDF5;
  --text-dim: #93A0B4;
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(34,229,160,0.4);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow: 0 4px 20px rgba(0,0,0,0.25);
  --shadow-hover: 0 12px 40px rgba(0,0,0,0.4);
  --transition: all 0.3s ease;
  --container: 1200px;
  --header-h: 64px;
  --space-section: 100px;
  --font: "PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Inter",sans-serif;
}

/* ===== Reset & Base ===== */
*,*::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: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--text); text-decoration: none; transition: var(--transition); }
button { font-family: var(--font); cursor: pointer; border: none; background: none; color: var(--text); }
input { font-family: var(--font); }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  border: 1px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.btn-primary {
  background: var(--accent);
  color: #0B0F1A;
  min-height: 48px;
  padding: 0 28px;
  box-shadow: 0 0 0 rgba(34,229,160,0);
}
.btn-primary:hover {
  background: #3cebb0;
  box-shadow: 0 6px 24px rgba(34,229,160,0.35);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,0.15);
  color: var(--text);
  min-height: 48px;
  padding: 0 28px;
}
.btn-outline:hover {
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  padding: 0 8px;
}
.btn-ghost:hover { color: var(--accent); }
.btn-sm { min-height: 40px; padding: 0 20px; font-size: 14px; }

/* ===== Header Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: rgba(11,15,26,0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}
.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.logo-mark {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: #fff;
}
.logo-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px rgba(34,229,160,0.7);
}
.logo-sub {
  font-size: 13px;
  color: var(--text-dim);
  margin-left: 6px;
  padding-left: 12px;
  border-left: 1px solid var(--border);
  letter-spacing: 1px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0 auto;
}
.nav-links a {
  position: relative;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dim);
  padding: 8px 14px;
  border-radius: 6px;
  transition: var(--transition);
}
.nav-links a:hover {
  color: var(--text);
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}
.nav-links a.active {
  color: var(--text);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.search-wrap {
  position: relative;
  display: flex;
  align-items: center;
  width: 220px;
}
.search-icon {
  position: absolute;
  left: 12px;
  width: 16px;
  height: 16px;
  color: var(--text-dim);
  pointer-events: none;
}
.search-input {
  width: 100%;
  height: 40px;
  padding: 0 16px 0 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
  border: 1px solid transparent;
  color: var(--text);
  font-size: 13px;
  outline: none;
  transition: var(--transition);
}
.search-input::placeholder { color: var(--text-dim); }
.search-input:focus {
  border-color: rgba(34,229,160,0.5);
  box-shadow: 0 0 0 3px rgba(34,229,160,0.15);
}
.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  background: var(--bg-soft);
  border: 1px solid transparent;
  transition: var(--transition);
}
.icon-btn:hover {
  color: var(--accent);
  border-color: var(--border-hover);
}
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  background: var(--bg-soft);
}
.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: var(--transition);
}
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile drawer */
.mobile-drawer {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px 24px;
  z-index: 999;
  transform: translateY(-4px);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}
.mobile-drawer.active {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.mobile-drawer a {
  display: block;
  padding: 12px 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-dim);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.mobile-drawer a:hover,
.mobile-drawer a.active { color: var(--accent); }

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: calc(var(--header-h) + 72px) 0 72px;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34,229,160,0.08) 0%, transparent 70%);
  top: -200px;
  right: -100px;
  pointer-events: none;
}
.page-hero::after {
  content: "";
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(122,124,255,0.06) 0%, transparent 70%);
  bottom: -100px;
  left: -80px;
  pointer-events: none;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.85fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(34,229,160,0.1);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.page-hero h1 {
  font-size: 46px;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 18px;
  color: #fff;
}
.page-hero h1 .highlight {
  color: var(--accent);
  position: relative;
}
.hero-desc {
  font-size: 16px;
  color: var(--text-dim);
  max-width: 520px;
  margin-bottom: 32px;
  line-height: 1.75;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.trust-row {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.trust-row span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-dim);
}
.trust-row span::before {
  content: "✓";
  color: var(--accent);
  font-weight: 700;
  font-size: 14px;
}
.hero-visual {
  position: relative;
}
.hero-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
  border: 1px solid var(--border);
}
.hero-img-wrap img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}
.hero-img-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(11,15,26,0.4));
  pointer-events: none;
}
.float-card {
  position: absolute;
  bottom: 20px;
  left: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: #1A2234;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  padding: 12px 18px;
  box-shadow: var(--shadow);
  animation: floatUp 3s ease-in-out infinite;
}
@keyframes floatUp {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
.float-card .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(34,229,160,0.6);
}
.float-card strong {
  display: block;
  font-size: 14px;
  color: var(--text);
  line-height: 1.4;
}
.float-card span {
  font-size: 12px;
  color: var(--text-dim);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 24px;
  display: flex;
  gap: 8px;
  align-items: center;
}
.breadcrumb a {
  color: var(--text-dim);
}
.breadcrumb a:hover {
  color: var(--accent);
}
.breadcrumb .sep {
  color: rgba(255,255,255,0.3);
}

/* ===== Section ===== */
.section {
  padding: var(--space-section) 0;
  position: relative;
}
.section-alt {
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.section-head {
  max-width: 640px;
  margin-bottom: 48px;
}
.section-head h2 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
  color: #fff;
}
.section-head p {
  color: var(--text-dim);
  font-size: 15px;
}
.section-title {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  line-height: 1.3;
}
.section-sub {
  color: var(--text-dim);
  font-size: 15px;
  max-width: 640px;
  margin-bottom: 48px;
}

/* ===== Feature Mixed Row ===== */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.feature-row.reverse .feature-img { order: -1; }
.feature-text h3 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 12px;
  color: #fff;
}
.feature-text p {
  color: var(--text-dim);
  margin-bottom: 20px;
  font-size: 15px;
}
.feature-list {
  list-style: none;
  padding: 0;
}
.feature-list li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 14px;
  font-size: 15px;
  color: var(--text);
}
.feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(34,229,160,0.15);
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.feature-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.feature-img:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--border-hover);
}
.feature-img img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

/* ===== Steps ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 32px;
  margin-top: 40px;
}
.step-card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
  transition: var(--transition);
}
.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-hover);
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(34,229,160,0.12);
  color: var(--accent);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
}
.step-card h3 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 10px;
  color: #fff;
}
.step-card p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* ===== Quote ===== */
.quote-block {
  margin-top: 40px;
  background: var(--bg-panel);
  border-left: 3px solid var(--accent);
  border-radius: 0 12px 12px 0;
  padding: 24px 28px;
}
.quote-block p {
  font-size: 15px;
  color: var(--text);
  line-height: 1.8;
}
.quote-block .quote-author {
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-dim);
}

/* ===== CTA Banner ===== */
.cta-banner {
  background: linear-gradient(135deg, rgba(34,229,160,0.08), rgba(122,124,255,0.05)), var(--bg-panel);
  border-top: 1px solid rgba(34,229,160,0.25);
  border-bottom: 1px solid var(--border);
  padding: 64px 0;
  text-align: center;
}
.cta-banner h3 {
  font-size: 30px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}
.cta-banner p {
  color: var(--text-dim);
  font-size: 15px;
  margin-bottom: 32px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.cta-banner .btn {
  margin: 0 8px;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.active {
  border-color: rgba(34,229,160,0.2);
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  min-height: 60px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  transition: var(--transition);
}
.faq-q:hover { color: var(--accent); }
.faq-q .icon-arrow {
  width: 16px;
  height: 16px;
  color: var(--text-dim);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item.active .icon-arrow {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-answer-inner {
  padding: 0 24px 24px;
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
  border-left: 3px solid var(--accent);
  margin-left: 24px;
}

/* ===== Related ===== */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 32px;
}
.related-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: var(--transition);
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-hover);
}
.related-card .related-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(34,229,160,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--accent);
}
.related-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
}
.related-card p {
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 16px;
}
.related-card .related-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
}
.related-card .related-link:hover { gap: 10px; }

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p {
  font-size: 14px;
  color: var(--text-dim);
  margin-top: 16px;
  max-width: 280px;
  line-height: 1.7;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul {
  list-style: none;
}
.footer-col li {
  margin-bottom: 10px;
}
.footer-col a {
  font-size: 14px;
  color: var(--text-dim);
}
.footer-col a:hover {
  color: var(--accent);
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border);
  padding: 20px 0;
}
.copyright {
  font-size: 13px;
  color: var(--text-dim);
}
.back-top {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: #0B0F1A;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.back-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(34,229,160,0.4);
}

/* ===== Float CTA ===== */
.float-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}
.float-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--bg-panel);
  border: 1px solid var(--accent);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-hover);
  animation: floatPulse 3s ease-in-out infinite;
  transition: var(--transition);
}
.float-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 0 30px rgba(34,229,160,0.3);
}
@keyframes floatPulse {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}
.float-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
  opacity: 0;
  transform: translateY(8px) scale(0.95);
  pointer-events: none;
  transition: var(--transition);
}
.float-cta.open .float-options {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
.float-options .btn {
  box-shadow: var(--shadow);
}
.mobile-bottom-bar {
  display: none;
  position: fixed;
  bottom: 12px;
  left: 12px;
  right: 12px;
  z-index: 950;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 8px;
  gap: 10px;
  box-shadow: var(--shadow-hover);
}
.mobile-bottom-bar .btn {
  flex: 1;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .menu-toggle { display: flex; }
  .search-wrap { width: 180px; }
  .mobile-drawer { display: block; }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-visual { max-width: 560px; }
  .feature-row {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .feature-row.reverse .feature-img { order: 0; }
  .steps-grid { grid-template-columns: repeat(3,1fr); gap: 20px; }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .search-wrap { display: none; }
  .icon-btn { display: none; }
  .section { --space-section: 64px; }
  .page-hero h1 { font-size: 34px; }
  .section-title { font-size: 28px; }
  .section-head h2 { font-size: 28px; }
  .steps-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .hero-img-wrap img { height: 260px; }
  .feature-img img { height: 220px; }
  .cta-banner h3 { font-size: 24px; }
  .float-cta { display: none; }
  .mobile-bottom-bar { display: flex; }
  body { padding-bottom: 80px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 12px; }
  .btn { width: auto; }
  .mobile-bottom-bar .btn { width: 100%; }
}

/* roulang page: article */
:root{
  --bg:#0B0F1A;
  --panel:#131A2A;
  --panel-2:#1A2234;
  --primary:#22E5A0;
  --primary-hover:#46EBB4;
  --accent:#7A7CFF;
  --amber:#FFB84D;
  --text:#E8EDF5;
  --text-2:#93A0B4;
  --border:rgba(255,255,255,0.08);
  --radius:16px;
  --radius-btn:10px;
  --shadow:0 4px 20px rgba(0,0,0,0.25);
  --shadow-lg:0 12px 40px rgba(0,0,0,0.4);
  --font:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Inter',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:1.75;font-size:15px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* btn */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;border:none;transition:all .3s ease;white-space:nowrap}
.btn-primary{background:var(--primary);color:#0B0F1A}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:0 8px 28px rgba(34,229,160,0.35)}
.btn-secondary{background:transparent;color:var(--text);border:1px solid rgba(255,255,255,0.15)}
.btn-secondary:hover{border-color:var(--primary);color:#fff;transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-lg{height:52px;padding:0 32px;font-size:16px}

/* header */
.site-header{position:fixed;top:0;left:0;right:0;height:64px;z-index:100;background:rgba(11,15,26,0.88);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;height:64px;gap:20px}
.logo{display:flex;align-items:center;gap:4px;flex-shrink:0}
.logo-mark{font-size:22px;font-weight:700;letter-spacing:-0.5px;color:var(--text);line-height:1}
.logo-dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(34,229,160,0.8)}
.logo-sub{font-size:12px;color:var(--text-2);margin-left:8px;padding:2px 10px;border:1px solid var(--border);border-radius:999px;letter-spacing:0.3px}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-links a{position:relative;font-size:14px;font-weight:500;color:var(--text-2);padding:8px 12px;border-radius:8px;transition:color .3s ease}
.nav-links a:hover{color:var(--text)}
.nav-links a::after{content:'';position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .3s ease}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--text)}
.nav-right{display:flex;align-items:center;gap:10px}
.search-box{position:relative;width:220px}
.search-box svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--text-2);width:16px;height:16px;pointer-events:none}
.search-box input{width:100%;height:40px;border-radius:10px;border:1px solid transparent;background:var(--panel-2);color:var(--text);padding:0 12px 0 36px;font-size:13px;outline:none;transition:border .3s,box-shadow .3s}
.search-box input::placeholder{color:rgba(147,160,180,0.6)}
.search-box input:focus{border-color:rgba(34,229,160,0.6);box-shadow:0 0 0 4px rgba(34,229,160,0.15)}
.search-panel{position:absolute;top:calc(100% + 8px);left:0;right:0;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px;display:none;box-shadow:var(--shadow-lg);z-index:50}
.search-panel.open{display:block;animation:fadeIn .25s ease}
.search-panel .label{font-size:12px;color:var(--text-2);margin-bottom:12px;padding-left:4px}
.quick-links{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.quick-link{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:8px;font-size:13px;color:var(--text-2);text-decoration:none;transition:background .2s,color .2s}
.quick-link:hover{background:rgba(34,229,160,0.08);color:var(--text)}
.quick-link svg{width:16px;height:16px;color:var(--primary)}
.kbd-hint{display:flex;align-items:center;justify-content:space-between;padding:10px 4px 0;font-size:12px;color:var(--text-2);border-top:1px solid var(--border);margin-top:12px}
.kbd-hint kbd{font-size:11px;background:var(--panel-2);padding:2px 8px;border-radius:4px;border:1px solid var(--border);font-family:inherit}
.icon-btn{position:relative;width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--text-2);background:transparent;border:1px solid transparent;transition:all .3s}
.icon-btn:hover{color:var(--text);border-color:var(--border);background:rgba(255,255,255,0.03)}
.icon-btn svg{width:18px;height:18px}
.icon-btn .dot{position:absolute;top:8px;right:8px;width:6px;height:6px;border-radius:50%;background:var(--amber)}
.hamburger{display:none;width:40px;height:40px;border-radius:10px;align-items:center;justify-content:center;color:var(--text);transition:background .2s}
.hamburger:hover{background:rgba(255,255,255,0.05)}
.hamburger svg{width:20px;height:20px}

/* mobile drawer */
.mobile-drawer{position:fixed;top:64px;left:0;right:0;bottom:0;background:var(--panel);z-index:99;padding:32px 24px;display:none;flex-direction:column;gap:8px;overflow-y:auto}
.mobile-drawer.open{display:flex;animation:slideDown .3s ease}
.mobile-drawer a{padding:14px 16px;border-radius:12px;font-size:16px;font-weight:500;color:var(--text);text-decoration:none;transition:background .2s}
.mobile-drawer a:hover{background:rgba(34,229,160,0.08)}
.mobile-drawer a.active{background:rgba(34,229,160,0.1);color:var(--primary)}
.mobile-drawer .drawer-divider{height:1px;background:var(--border);margin:16px 0}
.mobile-drawer .btn{margin-top:8px}

/* breadcrumb */
.breadcrumb-wrapper{padding:88px 0 0;background:linear-gradient(180deg,rgba(34,229,160,0.03) 0%,transparent 100%)}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:6px;font-size:13px;color:var(--text-2)}
.breadcrumb a{color:var(--text-2);text-decoration:none;transition:color .2s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:0.4}
.breadcrumb .current{color:var(--text-2);max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* article main */
.article-main{padding:48px 0 64px}
.article-wrap{max-width:820px;margin:0 auto}
.article-header{padding:32px 0 24px;text-align:center}
.article-meta{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-2);margin-bottom:20px}
.article-cat{display:inline-flex;align-items:center;padding:4px 14px;border-radius:999px;background:rgba(34,229,160,0.12);color:var(--primary);font-size:12px;font-weight:500;letter-spacing:0.5px}
.article-date{display:inline-flex;align-items:center;gap:4px}
.article-date svg{width:14px;height:14px;opacity:0.6}
.article-header h1{font-size:38px;font-weight:700;line-height:1.3;letter-spacing:-0.5px;margin-bottom:16px}
.article-summary{font-size:15px;color:var(--text-2);line-height:1.75;max-width:680px;margin:0 auto 24px;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.divider{border:none;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.12),transparent)}

/* body */
.article-body{max-width:760px;margin:0 auto}
.article-content{font-size:16px;line-height:1.75;color:var(--text)}
.article-content h2{font-size:24px;font-weight:700;color:var(--text);margin:44px 0 18px;padding-top:8px;line-height:1.4}
.article-content h2::before{content:'';display:inline-block;width:4px;height:20px;background:var(--primary);border-radius:4px;margin-right:12px;vertical-align:-3px}
.article-content h3{font-size:20px;font-weight:600;color:var(--text);margin:32px 0 14px}
.article-content p{margin:0 0 22px}
.article-content ul,.article-content ol{margin:0 0 26px;padding-left:22px}
.article-content ul li{list-style:none;position:relative;padding-left:20px;margin-bottom:10px}
.article-content ul li::before{content:'';position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;background:var(--primary);opacity:0.8}
.article-content ol li{list-style:decimal;margin-bottom:10px;padding-left:4px}
.article-content blockquote{margin:28px 0;padding:18px 24px;background:rgba(34,229,160,0.06);border-left:3px solid var(--primary);border-radius:0 12px 12px 0;color:var(--text-2);font-style:normal}
.article-content blockquote p{margin-bottom:0}
.article-content img{border-radius:12px;margin:28px auto;box-shadow:var(--shadow)}
.article-content hr{border:none;border-top:1px solid var(--border);margin:36px 0}
.article-content a{color:var(--primary);text-decoration:underline;text-underline-offset:4px;transition:opacity .2s}
.article-content a:hover{opacity:0.8}
.article-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px}
.article-content th,.article-content td{padding:10px 14px;border:1px solid var(--border);text-align:left}
.article-content th{background:rgba(255,255,255,0.03);font-weight:600}

/* pager */
.article-pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:48px 0 16px}
.pager-card{display:flex;flex-direction:column;gap:6px;padding:20px 24px;background:var(--panel);border:1px solid var(--border);border-radius:12px;text-decoration:none;transition:all .3s ease}
.pager-card:hover{border-color:rgba(34,229,160,0.4);transform:translateY(-4px);box-shadow:var(--shadow)}
.pager-card.next{align-items:flex-end;text-align:right}
.pager-label{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-2);font-weight:500}
.pager-card.next .pager-label{flex-direction:row-reverse}
.pager-label svg{width:14px;height:14px}
.pager-title{font-size:14px;font-weight:600;color:var(--text);line-height:1.5;transition:color .2s}
.pager-card:hover .pager-title{color:var(--primary)}
.back-category{text-align:center;margin:8px 0 0}
.back-category a{display:inline-flex;align-items:center;gap:6px;color:var(--text-2);font-size:14px;text-decoration:none;transition:color .2s}
.back-category a:hover{color:var(--primary)}
.back-category svg{width:14px;height:14px}

/* empty state */
.article-empty{max-width:680px;margin:80px auto;text-align:center;padding:64px 32px;background:var(--panel);border:1px solid var(--border);border-radius:20px}
.article-empty svg{width:64px;height:64px;color:var(--primary);margin:0 auto 24px;opacity:0.7}
.article-empty h1{font-size:28px;font-weight:700;margin-bottom:12px}
.article-empty p{color:var(--text-2);font-size:15px;margin-bottom:32px}

/* related */
.related-section{padding:64px 0;border-top:1px solid var(--border);background:linear-gradient(180deg,transparent,rgba(34,229,160,0.02))}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:36px}
.section-head h2{font-size:30px;font-weight:700;position:relative}
.section-head h2::after{content:'';position:absolute;left:0;bottom:-8px;width:32px;height:3px;background:var(--primary);border-radius:3px}
.section-head .more{font-size:14px;color:var(--text-2);text-decoration:none;transition:color .2s}
.section-head .more:hover{color:var(--primary)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{display:block;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;text-decoration:none;transition:all .3s ease}
.related-card:hover{transform:translateY(-6px);border-color:rgba(34,229,160,0.4);box-shadow:var(--shadow-lg)}
.related-thumb{height:180px;background-size:cover;background-position:center;position:relative}
.related-thumb::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(11,15,26,0.5))}
.related-body{padding:20px 22px 22px}
.related-body h3{font-size:16px;font-weight:600;color:var(--text);margin-bottom:10px;line-height:1.5;transition:color .2s}
.related-card:hover .related-body h3{color:var(--primary)}
.related-body p{font-size:13px;color:var(--text-2);line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* cta */
.cta-section{padding:64px 0}
.cta-box{background:linear-gradient(135deg,rgba(34,229,160,0.08) 0%,rgba(122,124,255,0.05) 100%),var(--panel);border:1px solid var(--border);border-radius:20px;padding:56px 40px;text-align:center;position:relative;overflow:hidden}
.cta-box::before{content:'';position:absolute;top:-40px;right:-40px;width:160px;height:160px;border-radius:50%;background:rgba(34,229,160,0.08);filter:blur(20px)}
.cta-box h2{font-size:32px;font-weight:700;margin-bottom:12px}
.cta-box p{font-size:16px;color:var(--text-2);margin-bottom:28px;max-width:520px;margin-left:auto;margin-right:auto}
.cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}

/* faq */
.faq-section{padding:64px 0;border-top:1px solid var(--border)}
.faq-section .section-head{justify-content:center}
.faq-section .section-head h2{text-align:center}
.faq-section .section-head h2::after{left:50%;transform:translateX(-50%)}
.faq-list{max-width:760px;margin:0 auto}
.faq-item{position:relative;background:var(--panel);border-radius:12px;border:1px solid var(--border);margin-bottom:12px;overflow:hidden;transition:border .3s ease}
.faq-item::before{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary);border-radius:3px 0 0 3px;opacity:0;transition:opacity .3s ease;z-index:2}
.faq-item.open{border-color:rgba(34,229,160,0.2)}
.faq-item.open::before{opacity:1}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:60px;cursor:pointer;font-size:15px;font-weight:500;color:var(--text);transition:color .2s}
.faq-question:hover{color:var(--primary)}
.faq-icon{width:16px;height:16px;position:relative;flex-shrink:0;transition:transform .3s ease}
.faq-icon::before,.faq-icon::after{content:'';position:absolute;background:var(--text-2);border-radius:2px;transition:background .3s}
.faq-icon::before{left:0;top:50%;width:100%;height:2px;transform:translateY(-50%)}
.faq-icon::after{left:50%;top:0;height:100%;width:2px;transform:translateX(-50%)}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-item.open .faq-icon::before,.faq-item.open .faq-icon::after{background:var(--primary)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-answer-inner{padding:0 24px 20px;font-size:14px;line-height:1.75;color:var(--text-2)}

/* footer */
.site-footer{background:var(--panel);border-top:1px solid var(--border);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.75;max-width:280px}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2);text-decoration:none;transition:color .2s}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding:24px 0;border-top:1px solid var(--border)}
.copyright{font-size:13px;color:var(--text-2)}
.back-top{width:40px;height:40px;border-radius:50%;background:var(--primary);color:#0B0F1A;display:flex;align-items:center;justify-content:center;transition:transform .2s,box-shadow .2s;box-shadow:0 4px 16px rgba(34,229,160,0.3)}
.back-top:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(34,229,160,0.4)}

/* float cta */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:90;opacity:0;transform:translateY(20px);pointer-events:none;transition:opacity .4s ease,transform .4s ease}
.float-cta.visible{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta.hidden-footer{opacity:0;transform:translateY(20px);pointer-events:none}
.float-cta-btn{width:64px;height:64px;border-radius:50%;background:var(--panel);border:1px solid var(--primary);display:flex;align-items:center;justify-content:center;color:var(--primary);cursor:pointer;box-shadow:var(--shadow-lg);transition:all .3s ease;animation:floatY 3s infinite ease-in-out}
.float-cta-btn:hover{background:rgba(34,229,160,0.1);transform:scale(1.05)}
.float-cta-btn svg{width:24px;height:24px}
.float-cta-panel{position:absolute;bottom:72px;right:0;display:none;flex-direction:column;gap:8px;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:12px;box-shadow:var(--shadow-lg);min-width:160px}
.float-cta-panel.open{display:flex;animation:slideUp .3s ease}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-4px)}}
@keyframes slideUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
@keyframes slideDown{from{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:translateY(0)}}

/* misc */
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
::selection{background:rgba(34,229,160,0.3);color:#fff}

/* responsive */
@media(max-width:1024px){
  .nav-links{display:none}
  .hamburger{display:flex}
  .search-box{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:767px){
  .header-inner{gap:12px}
  .logo-sub{display:none}
  .icon-btn{display:none}
  .container{padding:0 20px}
  .breadcrumb-wrapper{padding-top:80px}
  .article-header h1{font-size:28px}
  .article-header{padding:20px 0 16px}
  .article-body{max-width:100%}
  .article-content{font-size:15px}
  .related-grid{grid-template-columns:1fr;gap:16px}
  .related-thumb{height:160px}
  .article-pager{grid-template-columns:1fr;gap:12px}
  .pager-card.next{align-items:flex-start;text-align:left}
  .pager-card.next .pager-label{flex-direction:row}
  .cta-box{padding:40px 24px}
  .cta-box h2{font-size:24px}
  .cta-actions{flex-direction:column;align-items:stretch}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;gap:16px;justify-content:center;text-align:center}
  .faq-section .section-head h2{text-align:center}
  .faq-question{font-size:14px;padding:0 20px}
  .faq-answer-inner{padding:0 20px 16px}
  .section-head h2{font-size:24px}
  .article-summary{-webkit-line-clamp:3}
  .float-cta{left:16px;right:16px;bottom:16px;transform:translateY(20px)}
  .float-cta.visible{opacity:1;transform:translateY(0)}
  .float-cta-btn{display:none}
  .float-cta-panel{display:flex;position:static;flex-direction:row;justify-content:center;gap:12px;background:rgba(19,26,42,0.95);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border);border-radius:12px;padding:8px;box-shadow:var(--shadow-lg);min-width:0}
  .float-cta-panel .btn{flex:1;height:44px;font-size:14px;padding:0 12px;white-space:nowrap}
  .float-cta-panel.open{animation:none}
}
@media(max-width:520px){
  .logo-mark{font-size:20px}
  .btn-primary,.btn-secondary{padding:0 16px}
  .article-header h1{font-size:26px}
  .breadcrumb span.current{max-width:160px}
}

/* roulang page: category2 */
:root {
  --bg-primary: #0B0F1A;
  --bg-secondary: #131A2A;
  --bg-panel: #1A2234;
  --accent: #22E5A0;
  --accent-bright: #4ef5b8;
  --secondary: #7A7CFF;
  --hot: #FFB84D;
  --text-primary: #E8EDF5;
  --text-secondary: #93A0B4;
  --divider: rgba(255,255,255,0.08);
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-input: 12px;
  --shadow-card: 0 4px 20px rgba(0,0,0,0.25);
  --shadow-hover: 0 12px 40px rgba(0,0,0,0.4);
  --nav-height: 64px;
  --container-width: 1200px;
  --section-gap: 100px;
}
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: "PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Inter",-apple-system,sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color:inherit; text-decoration:none; }
img { display:block; max-width:100%; }
button { font-family:inherit; cursor:pointer; background:none; border:none; color:inherit; }
input { font-family:inherit; }
ul,ol { list-style:none; }
.container { max-width: var(--container-width); margin:0 auto; padding:0 24px; }
section { position:relative; }

:focus-visible { outline:2px solid var(--accent); outline-offset:2px; }

/* Button System */
.btn {
  display:inline-flex; align-items:center; justify-content:center;
  min-height:48px; padding:0 28px; border-radius:var(--radius-btn);
  font-size:16px; font-weight:600; letter-spacing:0.02em;
  transition:all .3s ease; border:1px solid transparent;
  white-space:nowrap; line-height:1.2;
}
.btn-lg { min-height:52px; padding:0 34px; font-size:17px; }
.btn-primary { background:var(--accent); color:#0B0F1A; }
.btn-primary:hover { background:var(--accent-bright); transform:translateY(-2px); box-shadow:0 8px 28px rgba(34,229,160,0.35); }
.btn-primary:active { transform:translateY(0); box-shadow:0 4px 12px rgba(34,229,160,0.25); }
.btn-outline { background:transparent; border-color:rgba(255,255,255,0.15); color:var(--text-primary); }
.btn-outline:hover { border-color:var(--accent); color:#fff; transform:translateY(-2px); }
.btn-ghost { background:transparent; color:var(--text-primary); padding:0 8px; min-height:48px; }
.btn-ghost span { display:inline-block; transition:transform .3s ease; }
.btn-ghost:hover span { transform:translateX(4px); color:var(--accent); }
.btn-ghost:hover { color:var(--accent); }

/* Tag / Badge */
.tag {
  display:inline-flex; align-items:center; gap:7px;
  padding:5px 14px; border-radius:999px;
  background:rgba(34,229,160,0.08);
  color:var(--accent); font-size:12px; font-weight:500;
}
.hot-badge {
  display:inline-block; background:var(--hot); color:#0B0F1A;
  font-size:12px; font-weight:700; padding:4px 12px; border-radius:999px;
}
.status-dot {
  width:8px; height:8px; border-radius:50%; background:var(--accent);
  box-shadow:0 0 0 4px rgba(34,229,160,0.15);
  display:inline-block; animation:pulse 2s infinite;
}
@keyframes pulse {
  0%,100% { box-shadow:0 0 0 3px rgba(34,229,160,0.15); }
  50% { box-shadow:0 0 0 7px rgba(34,229,160,0.04); }
}

/* Section Header */
.section-head { display:flex; align-items:flex-end; justify-content:space-between; gap:20px; margin-bottom:48px; }
.section-head h2 { font-size:36px; font-weight:700; line-height:1.25; }
.section-head .section-desc { margin-top:10px; color:var(--text-secondary); font-size:15px; max-width:560px; }
.section-eyebrow { display:block; font-size:12px; font-weight:600; text-transform:uppercase; letter-spacing:.12em; color:var(--accent); margin-bottom:10px; }
.text-link { color:var(--accent); font-size:15px; font-weight:500; display:inline-flex; align-items:center; gap:6px; transition:gap .3s ease; white-space:nowrap; }
.text-link:hover { gap:12px; }
.section-head.centered { text-align:center; justify-content:center; flex-direction:column; align-items:center; }

/* Header */
.site-header {
  position:fixed; top:0; left:0; right:0; z-index:1000;
  height:var(--nav-height); background:rgba(11,15,26,0.86);
  backdrop-filter:blur(18px); border-bottom:1px solid var(--divider);
}
.header-inner { display:flex; align-items:center; justify-content:space-between; height:var(--nav-height); gap:20px; }
.logo { display:inline-flex; align-items:center; gap:8px; flex-shrink:0; }
.logo-mark { font-size:22px; font-weight:700; letter-spacing:-0.02em; color:var(--text-primary); }
.logo-dot { width:6px; height:6px; border-radius:50%; background:var(--accent); box-shadow:0 0 10px rgba(34,229,160,0.7); }
.logo-sub { font-size:13px; color:var(--text-secondary); font-weight:400; letter-spacing:.08em; }

.nav-links { display:flex; align-items:center; gap:4px; margin:0 auto; }
.nav-link {
  position:relative; padding:8px 14px; font-size:14px; font-weight:500;
  color:var(--text-secondary); border-radius:8px; transition:color .3s ease;
}
.nav-link::after {
  content:''; position:absolute; left:14px; right:14px; bottom:2px; height:2px;
  background:var(--accent); border-radius:2px; transform:scaleX(0); transform-origin:left; transition:transform .3s ease;
}
.nav-link:hover { color:var(--text-primary); }
.nav-link:hover::after { transform:scaleX(1); }
.nav-link.active { color:var(--accent); }
.nav-link.active::after { transform:scaleX(1); background:var(--accent); }

.header-actions { display:flex; align-items:center; gap:12px; flex-shrink:0; }
.command-search { position:relative; }
.search-btn {
  display:flex; align-items:center; gap:8px;
  width:220px; height:40px; padding:0 14px;
  background:var(--bg-panel); border-radius:10px;
  border:1px solid transparent; color:var(--text-secondary);
  font-size:14px; transition:all .3s ease;
}
.search-btn svg { flex-shrink:0; }
.search-btn:hover, .command-search.open .search-btn { border-color:rgba(34,229,160,0.5); box-shadow:0 0 0 3px rgba(34,229,160,0.12); color:var(--text-primary); }
.search-panel {
  position:absolute; top:48px; right:0; width:320px;
  background:var(--bg-secondary); border:1px solid rgba(255,255,255,0.1);
  border-radius:14px; padding:16px; box-shadow:var(--shadow-hover);
  opacity:0; visibility:hidden; transform:translateY(-6px); transition:all .3s ease;
  z-index:100;
}
.command-search.open .search-panel { opacity:1; visibility:visible; transform:translateY(0); }
.search-panel-title { font-size:12px; color:var(--text-secondary); margin-bottom:12px; letter-spacing:.08em; font-weight:600; }
.search-quick-grid { display:grid; grid-template-columns:1fr 1fr; gap:8px; }
.search-quick-item {
  display:flex; align-items:center; gap:9px; padding:10px 12px;
  background:rgba(255,255,255,0.03); border-radius:10px; font-size:13px;
  color:var(--text-primary); transition:background .3s ease, border-color .3s ease;
  border:1px solid transparent;
}
.search-quick-item:hover { background:rgba(34,229,160,0.08); border-color:rgba(34,229,160,0.2); }
.search-quick-item svg { color:var(--accent); flex-shrink:0; }
.search-panel-footer { display:flex; justify-content:space-between; align-items:center; margin-top:14px; padding-top:12px; border-top:1px solid var(--divider); font-size:12px; color:var(--text-secondary); }
.kbd { display:inline-flex; align-items:center; gap:4px; }
.kbd kbd { background:var(--bg-panel); border:1px solid rgba(255,255,255,0.12); border-radius:4px; padding:2px 6px; font-size:11px; color:var(--text-secondary); font-family:inherit; }

.icon-btn {
  width:40px; height:40px; display:flex; align-items:center; justify-content:center;
  border-radius:10px; background:var(--bg-panel); color:var(--text-secondary);
  border:1px solid transparent; transition:all .3s ease;
}
.icon-btn:hover { color:var(--accent); border-color:rgba(34,229,160,0.4); }
.hamburger { display:none; width:40px; height:40px; border-radius:10px; background:var(--bg-panel); color:var(--text-primary); }

/* Mobile Drawer */
.mobile-drawer {
  position:fixed; top:var(--nav-height); left:0; right:0; z-index:999;
  background:var(--bg-secondary); border-bottom:1px solid var(--divider);
  padding:16px 24px 24px; display:none;
  box-shadow:0 24px 40px rgba(0,0,0,0.4);
}
.mobile-drawer.open { display:block; }
.mobile-drawer a { display:block; padding:12px 8px; font-size:15px; color:var(--text-secondary); border-bottom:1px solid var(--divider); transition:color .3s ease, padding-left .3s ease; }
.mobile-drawer a:last-child { border-bottom:none; }
.mobile-drawer a:hover, .mobile-drawer a.active { color:var(--accent); padding-left:14px; }

/* Page Hero */
.page-hero {
  padding-top:calc(var(--nav-height) + 56px);
  padding-bottom:56px; overflow:hidden;
  background:
    radial-gradient(ellipse 60% 50% at 20% 30%, rgba(34,229,160,0.08), transparent 60%),
    radial-gradient(ellipse 50% 50% at 80% 70%, rgba(122,124,255,0.06), transparent 60%),
    var(--bg-primary);
}
.page-hero::before {
  content:''; position:absolute; inset:0; opacity:0.14; pointer-events:none;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover; background-position:center;
  -webkit-mask-image:linear-gradient(to bottom, rgba(0,0,0,0.8), transparent 90%);
  mask-image:linear-gradient(to bottom, rgba(0,0,0,0.8), transparent 90%);
}
.hero-inner { position:relative; display:grid; grid-template-columns:1.05fr 0.95fr; gap:64px; align-items:center; }
.hero-copy { padding-top:16px; }
.hero-tag { display:inline-flex; align-items:center; gap:8px; margin-bottom:22px; }
.hero-copy h1 { font-size:56px; font-weight:700; line-height:1.2; letter-spacing:-0.02em; margin-bottom:18px; }
.hero-copy h1 em { font-style:normal; color:var(--accent); }
.hero-sub { font-size:17px; color:var(--text-secondary); max-width:520px; margin-bottom:32px; line-height:1.8; }
.hero-actions { display:flex; align-items:center; gap:16px; margin-bottom:36px; flex-wrap:wrap; }
.hero-trust { display:flex; gap:24px; flex-wrap:wrap; }
.hero-trust span { display:inline-flex; align-items:center; gap:8px; font-size:14px; color:var(--text-secondary); }
.hero-trust svg { color:var(--accent); flex-shrink:0; }

.hero-visual { position:relative; }
.hero-frame {
  position:relative; border-radius:20px; overflow:hidden;
  border:1px solid rgba(255,255,255,0.1);
  box-shadow:0 24px 60px rgba(0,0,0,0.45), 0 0 0 1px rgba(34,229,160,0.06), 0 0 80px rgba(34,229,160,0.08);
  background:var(--bg-secondary);
}
.hero-frame img { width:100%; height:380px; object-fit:cover; }
.hero-status-card {
  position:absolute; left:20px; bottom:20px;
  display:flex; align-items:center; gap:10px;
  background:rgba(26,34,52,0.92); backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,0.1);
  padding:12px 18px; border-radius:12px; font-size:14px; font-weight:500;
  box-shadow:0 8px 24px rgba(0,0,0,0.3);
}
.hero-status-card .status-dot { width:8px; height:8px; }

/* Feature Grid */
.feature-grid { padding:var(--section-gap) 0; }
.cards-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.feature-card {
  position:relative; background:var(--bg-secondary);
  border:1px solid rgba(255,255,255,0.06); border-radius:var(--radius-card);
  padding:30px 28px 28px; overflow:hidden;
  transition:transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.feature-card::before {
  content:''; position:absolute; top:-60px; right:-60px; width:140px; height:140px;
  background:radial-gradient(circle, rgba(34,229,160,0.08), transparent 70%);
  border-radius:50%;
}
.feature-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-hover); border-color:rgba(34,229,160,0.4); }
.card-icon {
  width:48px; height:48px; border-radius:12px;
  background:rgba(34,229,160,0.1); color:var(--accent);
  display:flex; align-items:center; justify-content:center; margin-bottom:20px;
}
.card-icon svg { width:24px; height:24px; }
.feature-card h3 { font-size:20px; font-weight:600; margin-bottom:10px; color:var(--text-primary); }
.feature-card p { font-size:14px; color:var(--text-secondary); line-height:1.7; margin-bottom:20px; }
.card-more { display:inline-flex; align-items:center; gap:4px; font-size:13px; color:var(--text-secondary); transition:all .3s ease; }
.card-more:hover { color:var(--accent); gap:10px; }

/* Ticker */
.ticker-bar { border-top:1px solid var(--divider); border-bottom:1px solid var(--divider); background:rgba(19,26,42,0.5); padding:14px 0; }
.ticker-inner { display:flex; align-items:center; gap:24px; flex-wrap:nowrap; overflow:hidden; }
.ticker-label {
  flex-shrink:0; white-space:nowrap;
  font-size:12px; font-weight:600; letter-spacing:.12em; color:var(--hot);
  display:inline-flex; align-items:center; gap:8px;
}
.ticker-items { display:flex; gap:36px; white-space:nowrap; overflow:hidden; }
.ticker-items span { font-size:14px; color:var(--text-secondary); display:inline-flex; align-items:center; gap:10px; }
.ticker-items span::before { content:''; width:4px; height:4px; border-radius:50%; background:var(--accent); opacity:0.6; }

/* Detail Split */
.detail-split { padding:var(--section-gap) 0 0; }
.split-block { display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center; margin-bottom:var(--section-gap); }
.split-block.two-cols-rev .split-content { order:-1; }
.split-media { position:relative; border-radius:18px; overflow:hidden; border:1px solid rgba(255,255,255,0.08); box-shadow:var(--shadow-card); }
.split-media img { width:100%; height:auto; min-height:280px; object-fit:cover; }
.split-media::after { content:''; position:absolute; inset:0; background:linear-gradient(to top, rgba(11,15,26,0.45), transparent 50%); }
.split-number { font-size:60px; font-weight:700; color:rgba(34,229,160,0.15); line-height:1; display:block; margin-bottom:8px; letter-spacing:-0.02em; font-family:'Inter',sans-serif; }
.split-content h3 { font-size:30px; font-weight:700; margin-bottom:16px; line-height:1.3; }
.split-content .split-desc { color:var(--text-secondary); font-size:15px; margin-bottom:22px; line-height:1.8; }
.check-list { display:flex; flex-direction:column; gap:14px; }
.check-list li { display:flex; align-items:flex-start; gap:12px; font-size:15px; color:var(--text-primary); }
.check-list li svg { flex-shrink:0; margin-top:4px; color:var(--accent); }

/* Quote */
.split-quote {
  margin-top:26px; padding:20px 24px;
  background:rgba(122,124,255,0.06); border-left:3px solid var(--secondary);
  border-radius:0 12px 12px 0; font-size:14px; color:var(--text-secondary); line-height:1.8;
  position:relative;
}
.split-quote::before {
  content:'“'; position:absolute; top:-6px; left:14px; font-size:40px; color:var(--secondary); opacity:0.5;
}

/* Stats */
.stats-bar { padding:56px 0; background:var(--bg-secondary); border-top:1px solid var(--divider); border-bottom:1px solid var(--divider); }
.stats-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:0; }
.stat-item { display:flex; flex-direction:column; align-items:center; gap:6px; position:relative; padding:12px 0; }
.stat-item + .stat-item::before { content:''; position:absolute; left:0; top:20%; height:60%; width:1px; background:var(--divider); }
.stat-num { font-size:40px; font-weight:700; color:var(--accent); font-family:'Inter',sans-serif; line-height:1.1; }
.stat-label { font-size:13px; color:var(--text-secondary); }

/* Scenario */
.scenario { padding:var(--section-gap) 0 0; }
.scenario-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
.scenario-card {
  background:var(--bg-secondary); border:1px solid rgba(255,255,255,0.06);
  border-radius:var(--radius-card); overflow:hidden;
  transition:transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.scenario-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-hover); border-color:rgba(34,229,160,0.3); }
.scenario-card img { width:100%; height:160px; object-fit:cover; transition:transform .4s ease; }
.scenario-card:hover img { transform:scale(1.04); }
.scenario-card-body { padding:22px 22px 24px; }
.scenario-card h3 { font-size:18px; font-weight:600; margin-bottom:8px; }
.scenario-card p { font-size:14px; color:var(--text-secondary); line-height:1.7; }

/* CTA Banner */
.cta-banner { padding:var(--section-gap) 0; }
.cta-inner {
  position:relative; overflow:hidden;
  background:linear-gradient(135deg, rgba(34,229,160,0.1), rgba(122,124,255,0.08)), var(--bg-secondary);
  border:1px solid rgba(34,229,160,0.25);
  border-radius:24px; padding:64px 56px;
  text-align:center;
}
.cta-inner::before {
  content:''; position:absolute; inset:0; opacity:0.12;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover; background-position:center;
}
.cta-inner h2 { position:relative; font-size:36px; font-weight:700; margin-bottom:14px; }
.cta-inner p { position:relative; color:var(--text-secondary); margin-bottom:32px; font-size:16px; max-width:620px; margin-left:auto; margin-right:auto; }
.cta-inner .btn { position:relative; }

/* FAQ */
.faq { padding:0 0 var(--section-gap); }
.faq-list { max-width:820px; margin:0 auto; display:flex; flex-direction:column; gap:14px; }
.faq-item {
  background:var(--bg-secondary); border:1px solid rgba(255,255,255,0.06);
  border-radius:12px; overflow:hidden; position:relative;
  transition:border-color .3s ease;
}
.faq-item::before {
  content:''; position:absolute; left:0; top:0; bottom:0; width:3px;
  background:var(--accent); opacity:0; transition:opacity .3s ease;
}
.faq-item.open { border-color:rgba(34,229,160,0.2); }
.faq-item.open::before { opacity:1; }
.faq-question {
  width:100%; display:flex; align-items:center; justify-content:space-between;
  min-height:60px; padding:0 24px; font-size:16px; font-weight:500; color:var(--text-primary);
  text-align:left; transition:color .3s ease;
}
.faq-question:hover { color:var(--accent); }
.faq-icon { flex-shrink:0; width:16px; height:16px; transition:transform .3s ease; color:var(--text-secondary); }
.faq-item.open .faq-icon { transform:rotate(180deg); color:var(--accent); }
.faq-answer { max-height:0; overflow:hidden; transition:max-height .35s ease; }
.faq-answer-inner { padding:0 24px 20px; color:var(--text-secondary); font-size:14px; line-height:1.75; }

/* Related Categories */
.related-cats { padding:0 0 var(--section-gap); }
.related-cats h2 { font-size:28px; font-weight:700; text-align:center; margin-bottom:36px; }
.related-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; max-width:980px; margin:0 auto; }
.related-card {
  display:flex; align-items:center; justify-content:space-between;
  background:var(--bg-secondary); border:1px solid rgba(255,255,255,0.06);
  border-radius:var(--radius-card); padding:26px 28px;
  transition:transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.related-card:hover { transform:translateY(-3px); border-color:rgba(34,229,160,0.4); box-shadow:var(--shadow-hover); }
.related-card h3 { font-size:17px; font-weight:600; }
.related-card p { font-size:13px; color:var(--text-secondary); margin-top:6px; }
.related-card svg { color:var(--accent); flex-shrink:0; transition:transform .3s ease; }
.related-card:hover svg { transform:translateX(4px); }

/* Footer */
.site-footer {
  background:var(--bg-secondary); border-top:1px solid var(--divider);
  padding:64px 0 0;
}
.footer-grid { display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:48px; margin-bottom:48px; }
.footer-brand .logo { margin-bottom:16px; }
.footer-brand p { font-size:14px; color:var(--text-secondary); max-width:280px; margin-top:14px; line-height:1.7; }
.footer-col h4 { font-size:15px; font-weight:600; margin-bottom:18px; color:var(--text-primary); }
.footer-col ul { display:flex; flex-direction:column; gap:12px; }
.footer-col a { font-size:14px; color:var(--text-secondary); transition:color .3s ease; }
.footer-col a:hover { color:var(--accent); }
.footer-bottom {
  display:flex; align-items:center; justify-content:space-between;
  padding:24px 0; border-top:1px solid var(--divider);
}
.copyright { font-size:13px; color:var(--text-secondary); }
.back-top {
  width:40px; height:40px; border-radius:50%;
  background:var(--accent); color:#0B0F1A; display:flex; align-items:center; justify-content:center;
  transition:transform .3s ease, box-shadow .3s ease;
}
.back-top:hover { transform:translateY(-3px); box-shadow:0 8px 20px rgba(34,229,160,0.4); }

/* Floating CTA */
.float-cta {
  position:fixed; right:28px; bottom:32px; z-index:900;
  opacity:0; visibility:hidden; transform:translateY(16px);
  transition:all .4s ease; display:flex; flex-direction:column; align-items:flex-end; gap:12px;
}
.float-cta.visible { opacity:1; visibility:visible; transform:translateY(0); }
.float-cta-main {
  width:64px; height:64px; border-radius:50%;
  background:var(--bg-secondary); border:1px solid rgba(34,229,160,0.5);
  display:flex; align-items:center; justify-content:center;
  color:var(--accent); box-shadow:0 10px 30px rgba(0,0,0,0.4);
  transition:transform .3s ease, background .3s ease;
  animation:floatPulse 3s ease-in-out infinite;
}
.float-cta-main:hover { background:rgba(34,229,160,0.12); transform:scale(1.05); }
@keyframes floatPulse {
  0%,100% { transform:translateY(0); }
  50% { transform:translateY(-4px); }
}
.float-cta-panel {
  display:flex; flex-direction:column; gap:8px; transform-origin:bottom right;
  animation:popIn .3s ease;
}
@keyframes popIn {
  from { opacity:0; transform:scale(0.85) translateY(8px); }
  to { opacity:1; transform:scale(1) translateY(0); }
}
.float-cta-panel a {
  display:inline-flex; align-items:center; gap:8px;
  background:var(--bg-secondary); border:1px solid rgba(34,229,160,0.4);
  color:var(--text-primary); border-radius:10px;
  padding:10px 18px; font-size:14px; font-weight:500; white-space:nowrap;
  box-shadow:0 6px 20px rgba(0,0,0,0.35); transition:all .3s ease;
}
.float-cta-panel a:hover { background:var(--accent); color:#0B0F1A; }
.float-cta-panel .cta-primary { background:var(--accent); color:#0B0F1A; }
.float-cta-panel .cta-primary:hover { background:var(--accent-bright); }

/* Mobile Dock */
.mobile-dock {
  display:none; position:fixed; bottom:0; left:0; right:0; z-index:950;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(11,15,26,0.92); backdrop-filter:blur(16px);
  border-top:1px solid rgba(34,229,160,0.2);
  gap:12px;
}
.mobile-dock a { flex:1; display:flex; align-items:center; justify-content:center; height:46px; border-radius:12px; font-size:15px; font-weight:600; }
.dock-btn { background:var(--accent); color:#0B0F1A; }
.dock-btn-outline { background:transparent; color:var(--text-primary); border:1px solid rgba(255,255,255,0.18); }

/* Responsive */
@media (max-width: 1024px) {
  .nav-links { gap:2px; }
  .nav-link { padding:8px 10px; font-size:13px; }
  .command-search .search-btn { width:160px; }
  .hero-copy h1 { font-size:44px; }
  .hero-frame img { height:320px; }
  .cards-grid { grid-template-columns:repeat(2,1fr); }
  .scenario-grid { grid-template-columns:repeat(2,1fr); }
}

@media (max-width: 768px) {
  :root { --section-gap:64px; }
  .nav-links { display:none; }
  .command-search { display:none; }
  .icon-btn { display:none; }
  .hamburger { display:flex; align-items:center; justify-content:center; }
  .header-actions .btn { min-height:40px; padding:0 18px; font-size:14px; }
  .hero-inner { grid-template-columns:1fr; gap:40px; }
  .hero-copy h1 { font-size:36px; }
  .hero-sub { font-size:16px; }
  .hero-frame img { height:260px; }
  .section-head { flex-direction:column; align-items:flex-start; }
  .section-head h2 { font-size:28px; }
  .split-block { grid-template-columns:1fr; gap:32px; }
  .split-block.two-cols-rev .split-content { order:0; }
  .stats-grid { grid-template-columns:repeat(2,1fr); gap:24px 0; }
  .stat-item + .stat-item::before { display:none; }
  .cta-inner { padding:44px 24px; }
  .cta-inner h2 { font-size:28px; }
  .footer-grid { grid-template-columns:1fr 1fr; gap:32px; }
  .related-grid { grid-template-columns:1fr; }
  .float-cta { display:none; }
  .mobile-dock { display:flex; }
  .page-hero { padding-bottom:32px; }
  .ticker-items { gap:20px; }
  .ticker-items span:nth-child(n+3) { display:none; }
}

@media (max-width: 520px) {
  .container { padding:0 16px; }
  .cards-grid { grid-template-columns:1fr; }
  .scenario-grid { grid-template-columns:1fr; }
  .hero-actions .btn { width:100%; }
  .hero-trust { flex-direction:column; gap:10px; }
  .btn-lg { min-height:48px; }
  .split-number { font-size:44px; }
  .split-content h3 { font-size:24px; }
  .faq-question { font-size:15px; padding:0 18px; }
  .faq-answer-inner { padding:0 18px 18px; font-size:14px; }
  .footer-grid { grid-template-columns:1fr; gap:28px; }
  .footer-bottom { flex-direction:column; gap:16px; text-align:center; }
  .cta-inner { padding:36px 20px; }
  .cta-inner h2 { font-size:24px; }
  .hero-status-card { left:14px; bottom:14px; padding:10px 14px; font-size:13px; }
}

/* roulang page: category3 */
:root {
  --bg: #0B0F1A;
  --panel: #131A2A;
  --panel-light: #1A2234;
  --primary: #22E5A0;
  --primary-bright: #3BF0B3;
  --accent: #7A7CFF;
  --hot: #FFB84D;
  --text: #E8EDF5;
  --text-sub: #93A0B4;
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(34,229,160,0.4);
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-input: 12px;
  --shadow-card: 0 4px 20px rgba(0,0,0,0.25);
  --shadow-hover: 0 12px 40px rgba(0,0,0,0.4);
  --transition: 0.3s ease;
  --font: "PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Inter",sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font-family: inherit; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  padding: 14px 24px;
  min-height: 48px;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #0B0F1A;
  box-shadow: 0 0 0 0 rgba(34,229,160,0.4);
}
.btn-primary:hover { background: var(--primary-bright); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(34,229,160,0.25); }
.btn-outline {
  border: 1px solid rgba(255,255,255,0.22);
  color: var(--text);
  background: transparent;
}
.btn-outline:hover { border-color: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-ghost { background: transparent; color: var(--text-sub); padding-left: 8px; padding-right: 8px; }
.btn-ghost:hover { color: var(--primary); text-decoration: underline; }
.btn-sm { min-height: 40px; padding: 8px 20px; font-size: 14px; }

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 64px;
  background: rgba(11,15,26,0.86);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.logo-mark {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.4px;
  color: var(--text);
}
.logo-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px rgba(34,229,160,0.7);
}
.logo-sub {
  font-size: 12px;
  color: var(--text-sub);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 999px;
  line-height: 1.8;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-sub);
  padding: 8px 12px;
  border-radius: 8px;
  position: relative;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text); }
.nav-links a::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 2px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }
.nav-links a.active { color: var(--primary); }
.header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.command-search {
  position: relative;
  width: 220px;
}
.command-search svg { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--text-sub); }
.command-search input {
  width: 100%;
  height: 40px;
  border-radius: var(--radius-input);
  background: var(--panel-light);
  border: 1px solid transparent;
  padding: 0 14px 0 42px;
  color: var(--text);
  font-size: 13px;
  outline: none;
  transition: all var(--transition);
}
.command-search input::placeholder { color: var(--text-sub); }
.command-search input:focus { border-color: rgba(34,229,160,0.6); box-shadow: 0 0 0 3px rgba(34,229,160,0.12); }
.search-panel {
  position: absolute;
  top: 48px;
  left: 0;
  right: 0;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-hover);
  padding: 8px;
  display: none;
  flex-direction: column;
  gap: 2px;
}
.search-panel.show { display: flex; }
.search-panel a { font-size: 13px; padding: 10px 12px; border-radius: 8px; color: var(--text-sub); display: flex; align-items: center; gap: 8px; transition: all var(--transition); }
.search-panel a:hover { background: rgba(255,255,255,0.05); color: var(--primary); }
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.hamburger span { width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: all var(--transition); }
.mobile-menu {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px 24px;
  display: none;
  flex-direction: column;
  gap: 4px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.4);
  z-index: 99;
}
.mobile-menu.show { display: flex; }
.mobile-menu a {
  padding: 12px 16px;
  border-radius: 10px;
  color: var(--text-sub);
  font-size: 15px;
  font-weight: 500;
  transition: all var(--transition);
}
.mobile-menu a:hover, .mobile-menu a.active { color: var(--primary); background: rgba(34,229,160,0.06); }

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 160px 0 100px;
  background: var(--bg);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34,229,160,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: -160px;
  left: -100px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(122,124,255,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--primary);
  background: rgba(34,229,160,0.1);
  border: 1px solid rgba(34,229,160,0.2);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: 52px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -1px;
  margin-bottom: 18px;
}
.hero-sub {
  font-size: 17px;
  color: var(--text-sub);
  line-height: 1.75;
  max-width: 520px;
  margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 36px; }
.trust-row { display: flex; gap: 22px; flex-wrap: wrap; }
.trust-row span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-sub);
}
.trust-row span::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}
.hero-visual { position: relative; }
.hero-card {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 0 0 8px rgba(34,229,160,0.04), var(--shadow-hover);
  background: var(--panel);
}
.hero-card img { width: 100%; height: 420px; object-fit: cover; }
.status-card {
  position: absolute;
  left: 24px;
  bottom: 24px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--panel-light);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow-card);
}
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 10px rgba(34,229,160,0.7); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.5; } }

/* ===== Section common ===== */
.section { padding: 100px 0; }
.section-head { max-width: 680px; margin-bottom: 56px; }
.section-head h2 { font-size: 34px; font-weight: 700; line-height: 1.3; margin-bottom: 14px; letter-spacing: -0.5px; }
.section-head p { color: var(--text-sub); font-size: 16px; }
.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(34,229,160,0.08);
  border-radius: 999px;
  padding: 4px 14px;
  margin-bottom: 16px;
}

/* ===== Features ===== */
.features-section { background: var(--bg); }
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34,229,160,0.08) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover { transform: translateY(-4px); border-color: var(--border-hover); box-shadow: var(--shadow-hover); }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(34,229,160,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary);
}
.feature-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-sub); line-height: 1.75; }

/* ===== Split / Identify ===== */
.identify-section { background: linear-gradient(180deg, var(--bg) 0%, #0D1320 100%); }
.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.split-visual {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-hover);
}
.split-visual img { width: 100%; height: 420px; object-fit: cover; }
.split-copy h2 { font-size: 32px; font-weight: 700; line-height: 1.35; margin-bottom: 24px; letter-spacing: -0.5px; }
.check-list { margin: 0 0 28px; }
.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--text);
  padding: 8px 0;
  line-height: 1.7;
}
.check-list li::before {
  content: "";
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary);
  margin-top: 4px;
  box-shadow: 0 0 8px rgba(34,229,160,0.3);
}

/* ===== Measures ===== */
.measures-section { background: var(--panel); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.measures-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.measure-card {
  display: flex;
  gap: 20px;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px;
  transition: all var(--transition);
}
.measure-card:hover { border-color: var(--border-hover); box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.measure-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(122,124,255,0.12);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.measure-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.measure-card p { font-size: 14px; color: var(--text-sub); line-height: 1.75; }

/* ===== Steps ===== */
.steps-section { background: var(--bg); }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step-card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px 28px 28px;
  transition: all var(--transition);
}
.step-card:hover { transform: translateY(-4px); border-color: var(--border-hover); box-shadow: var(--shadow-hover); }
.step-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  background: rgba(34,229,160,0.1);
  width: 32px;
  height: 32px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.step-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.step-card p { font-size: 14px; color: var(--text-sub); line-height: 1.7; }

/* ===== Scenarios ===== */
.scenarios-section { background: linear-gradient(180deg, var(--bg) 0%, rgba(19,26,42,0.4) 100%); }
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.scenario-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px;
  display: flex;
  gap: 20px;
  transition: all var(--transition);
}
.scenario-card:hover { transform: translateY(-4px); border-color: var(--border-hover); box-shadow: var(--shadow-hover); }
.scenario-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(34,229,160,0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.scenario-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.scenario-card p { font-size: 14px; color: var(--text-sub); line-height: 1.75; }

/* ===== FAQ ===== */
.faq-section { background: var(--bg); }
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color var(--transition);
  position: relative;
}
.faq-item.open { border-color: rgba(34,229,160,0.2); }
.faq-item.open::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--primary);
  border-radius: 3px;
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  background: none;
  transition: color var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-arrow { flex-shrink: 0; color: var(--text-sub); transition: transform var(--transition); }
.faq-item.open .faq-arrow { transform: rotate(180deg); color: var(--primary); }
.faq-answer {
  max-height: 0;
  padding: 0 24px;
  overflow: hidden;
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.8;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-item.open .faq-answer { max-height: 400px; padding-bottom: 22px; }

/* ===== CTA Banner ===== */
.cta-banner {
  position: relative;
  padding: 72px 0;
  background: linear-gradient(135deg, rgba(34,229,160,0.08) 0%, rgba(19,26,42,0.6) 50%), var(--panel);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.cta-inner {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.cta-inner h2 { font-size: 34px; font-weight: 700; margin-bottom: 14px; letter-spacing: -0.5px; }
.cta-inner p { color: var(--text-sub); font-size: 16px; margin-bottom: 32px; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ===== Footer ===== */
.site-footer {
  background: #0A0E17;
  border-top: 1px solid var(--border);
  padding: 72px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .logo { margin-bottom: 18px; }
.footer-brand p { font-size: 14px; color: var(--text-sub); line-height: 1.8; max-width: 320px; }
.footer-col h4 { font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 18px; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { font-size: 14px; color: var(--text-sub); transition: color var(--transition); }
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.copyright { font-size: 13px; color: var(--text-sub); }
.back-top {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: #0B0F1A;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.back-top:hover { transform: translateY(-3px); box-shadow: 0 8px 20px rgba(34,229,160,0.3); }

/* ===== Floating CTA ===== */
.floating-cta {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 90;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
  transform: translateY(80px);
  opacity: 0;
  transition: all 0.4s ease;
  pointer-events: none;
}
.floating-cta.show { transform: translateY(0); opacity: 1; pointer-events: auto; }
.floating-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px;
  box-shadow: var(--shadow-hover);
  transform: translateY(8px) scale(0.96);
  opacity: 0;
  transition: all 0.25s ease;
  pointer-events: none;
}
.floating-panel.show { transform: translateY(0) scale(1); opacity: 1; pointer-events: auto; }
.floating-panel a { font-size: 14px; font-weight: 600; padding: 10px 18px; border-radius: 10px; text-align: center; }
.floating-panel .btn-primary { background: var(--primary); color: #0B0F1A; }
.floating-panel .btn-outline { border-color: rgba(255,255,255,0.16); color: var(--text); }
.floating-toggle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--panel-light);
  border: 1px solid rgba(34,229,160,0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
  animation: float 3s ease-in-out infinite;
}
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-4px); } }
.floating-toggle:hover { border-color: var(--primary); box-shadow: 0 0 24px rgba(34,229,160,0.2); }

/* ===== Mobile bottom bar ===== */
.mobile-bottom-bar {
  display: none;
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 95;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 8px;
  box-shadow: var(--shadow-hover);
  justify-content: center;
  gap: 8px;
}
.mobile-bottom-bar .btn { flex: 1; padding: 12px 8px; font-size: 14px; }

/* ===== focus-visible ===== */
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .header-actions .command-search { display: none; }
  .hamburger { display: flex; }
  .hero { padding: 140px 0 80px; }
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .split-grid { gap: 48px; }
  .measures-grid { grid-template-columns: 1fr; }
  .scenarios-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-head { margin-bottom: 40px; }
  .hero h1 { font-size: 34px; }
  .hero-sub { font-size: 16px; }
  .split-grid { grid-template-columns: 1fr; }
  .split-visual img { height: 280px; }
  .features-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .measures-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero { padding: 130px 0 64px; }
  .hero h1 { font-size: 30px; }
  .hero-actions .btn { width: 100%; }
  .cta-actions .btn { width: 100%; }
  .floating-cta { display: none; }
  .mobile-bottom-bar { display: flex; }
  body { padding-bottom: 88px; }
  .cta-banner { padding: 56px 0; }
}

/* roulang page: category4 */
/* ============ 设计变量 ============ */
:root {
  --bg: #0B0F1A;
  --panel: #131A2A;
  --panel-2: #1A2234;
  --primary: #22E5A0;
  --primary-rgb: 34, 229, 160;
  --secondary: #7A7CFF;
  --accent: #FFB84D;
  --text: #E8EDF5;
  --text-2: #93A0B4;
  --border: rgba(255,255,255,0.08);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 20px rgba(0,0,0,0.25);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.4);
  --transition: 0.3s ease;
  --container: 1200px;
  --header-h: 64px;
}

/* ============ Reset / Base ============ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Inter",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:15px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .3s ease}
ul,ol{list-style:none}
button{font-family:inherit;border:none;background:none;cursor:pointer;color:inherit}
input{font-family:inherit;border:none;outline:none;background:none;color:var(--text)}
input::placeholder{color:rgba(147,160,180,.6)}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
section{position:relative}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:14px;font-weight:600;letter-spacing:.02em;
  transition:all .3s ease;white-space:nowrap;cursor:pointer;
}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.btn-primary{
  background:var(--primary);color:#0B0F1A;
  box-shadow:0 0 20px rgba(var(--primary-rgb),.18);
}
.btn-primary:hover{background:#3df0b3;transform:translateY(-2px);box-shadow:0 6px 30px rgba(var(--primary-rgb),.3)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{
  background:transparent;color:var(--text);border:1px solid rgba(255,255,255,.15);
}
.btn-secondary:hover{border-color:var(--primary);color:#fff;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--text);padding:0 8px;height:36px}
.btn-ghost:hover{text-decoration:underline;text-underline-offset:6px;color:var(--primary)}
.btn-lg{height:48px;padding:0 32px;font-size:15px}

/* ============ Header / Nav ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:var(--header-h);
  background:rgba(11,15,26,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:100%;gap:16px}
.logo{display:flex;align-items:center;gap:8px;flex-shrink:0}
.logo-mark{font-size:20px;font-weight:700;letter-spacing:-.02em;color:var(--text)}
.logo-dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(var(--primary-rgb),.6)}
.logo-sub{font-size:12px;font-weight:500;color:var(--text-2);letter-spacing:.06em}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  font-size:14px;font-weight:500;color:var(--text-2);
  position:relative;padding:8px 0;transition:color .3s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;
  background:var(--primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .3s ease;
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--primary)}
.nav-links a.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:38px;height:38px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  color:var(--text-2);transition:all .3s ease;
  background:transparent;border:1px solid transparent;
}
.icon-btn:hover{color:var(--primary);background:rgba(var(--primary-rgb),.08);border-color:rgba(var(--primary-rgb),.25)}
.header-cta{height:38px}

/* ============ 搜索框 ============ */
.search-box{position:relative;width:220px}
.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-2);pointer-events:none}
.search-box input{
  width:100%;height:38px;padding:0 14px 0 40px;
  background:var(--panel-2);border:1px solid transparent;
  border-radius:10px;font-size:13px;color:var(--text);
  transition:all .3s ease;
}
.search-box input:focus{
  border-color:rgba(var(--primary-rgb),.6);
  box-shadow:0 0 0 3px rgba(var(--primary-rgb),.12);
  outline:none;
}
.search-panel{
  position:absolute;top:calc(100% + 8px);left:0;right:0;
  background:var(--panel);border:1px solid var(--border);
  border-radius:12px;padding:16px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:all .3s ease;box-shadow:var(--shadow-lg);
  z-index:1200;
}
.search-box:focus-within .search-panel{opacity:1;visibility:visible;transform:translateY(0)}
.panel-label{font-size:11px;color:var(--text-2);letter-spacing:.08em;text-transform:uppercase}
.panel-items{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:12px}
.panel-items a{
  font-size:13px;color:var(--text-2);padding:8px 10px;
  border-radius:8px;background:rgba(255,255,255,.04);
  transition:all .3s ease;
}
.panel-items a:hover{color:var(--primary);background:rgba(var(--primary-rgb),.1)}
.panel-hint{display:block;margin-top:12px;font-size:11px;color:rgba(147,160,180,.6);text-align:right}

/* ============ 汉堡 / 移动菜单 ============ */
.hamburger{display:none;flex-direction:column;gap:5px;width:38px;height:38px;align-items:center;justify-content:center}
.hamburger span{width:20px;height:2px;background:var(--text);border-radius:2px;transition:all .3s ease}
.mobile-menu{
  display:none;position:fixed;top:var(--header-h);left:0;right:0;z-index:999;
  background:var(--panel);border-bottom:1px solid var(--border);
  padding:16px 24px 24px;transform:translateY(-100%);transition:transform .3s ease;
}
.mobile-menu.open{transform:translateY(0)}
.mobile-nav{display:flex;flex-direction:column;gap:4px}
.mobile-nav a{padding:12px 0;font-size:15px;font-weight:500;color:var(--text-2);border-bottom:1px solid rgba(255,255,255,.05)}
.mobile-nav a:hover{color:var(--primary)}
.mobile-nav a.active{color:var(--primary)}
.mobile-actions{padding-top:16px}
.mobile-actions .btn{width:100%}
body.menu-open{overflow:hidden}

/* ============ 面包屑 ============ */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);margin-bottom:24px}
.breadcrumb a{color:var(--text-2);transition:color .3s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(147,160,180,.4)}
.breadcrumb span:last-child{color:var(--text)}

/* ============ 分类页 Hero ============ */
.page-hero{
  padding:calc(var(--header-h) + 72px) 0 56px;
  background:
    radial-gradient(ellipse at 15% 20%,rgba(var(--primary-rgb),.10),transparent 55%),
    radial-gradient(ellipse at 85% 30%,rgba(122,124,255,.08),transparent 55%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat,
    var(--bg);
  border-bottom:1px solid var(--border);
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:500;color:var(--primary);
  background:rgba(var(--primary-rgb),.1);
  border:1px solid rgba(var(--primary-rgb),.25);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.tag-dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(var(--primary-rgb),.6)}
.page-hero h1{
  font-size:44px;font-weight:700;line-height:1.25;letter-spacing:-.02em;
  margin-bottom:16px;
}
.hero-sub{
  font-size:17px;color:var(--text-2);max-width:640px;line-height:1.75;
  margin-bottom:28px;
}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  font-size:13px;font-weight:500;color:var(--text-2);
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
  padding:8px 16px;border-radius:999px;
  transition:all .3s ease;
}
.chip:hover{color:var(--primary);border-color:rgba(var(--primary-rgb),.35);background:rgba(var(--primary-rgb),.06)}

/* ============ 场景图文混排 ============ */
.scene-section{padding:96px 0;border-bottom:1px solid rgba(255,255,255,.04)}
.scene-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;
}
.scene-media{position:relative}
.scene-media img{
  width:100%;height:auto;border-radius:var(--radius);
  box-shadow:var(--shadow);border:1px solid var(--border);
  transition:transform .4s ease,box-shadow .4s ease;
}
.scene-media img:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.media-caption{
  margin-top:14px;font-size:12px;color:var(--text-2);text-align:center;letter-spacing:.04em;
}
.media-badge{
  position:absolute;left:16px;bottom:16px;
  display:inline-flex;align-items:center;gap:8px;
  background:var(--panel-2);border:1px solid rgba(255,255,255,.1);
  border-radius:10px;padding:8px 14px;font-size:12px;font-weight:500;
  color:var(--text);box-shadow:var(--shadow);
}
.badge-dot{width:7px;height:7px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(var(--primary-rgb),.7);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
.scene-content{min-width:0}
.section-tag{
  display:inline-block;font-size:12px;font-weight:600;color:var(--primary);
  letter-spacing:.1em;text-transform:uppercase;margin-bottom:12px;
}
.scene-content h2{font-size:30px;font-weight:700;line-height:1.3;margin-bottom:16px;letter-spacing:-.01em}
.lead{font-size:15px;color:var(--text-2);line-height:1.8;margin-bottom:28px}
.scene-points{margin-bottom:24px}
.point{margin-bottom:20px;padding-left:20px;border-left:2px solid rgba(var(--primary-rgb),.3)}
.point h3{font-size:16px;font-weight:600;margin-bottom:6px;color:var(--text)}
.point p{font-size:14px;color:var(--text-2);line-height:1.75}
.check-list{margin-bottom:28px}
.check-list li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14px;color:var(--text-2);padding:6px 0;
}
.check-list li::before{
  content:"✓";flex-shrink:0;width:18px;height:18px;margin-top:3px;
  background:var(--primary);color:#0B0F1A;
  border-radius:50%;font-size:11px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.scene-quote{
  margin-top:8px;padding:20px 24px;
  background:rgba(255,255,255,.03);
  border-left:3px solid var(--primary);
  border-radius:0 12px 12px 0;
  font-size:14px;color:var(--text-2);line-height:1.8;
  font-style:normal;
}
.scene-quote::before{content:"“";color:var(--primary);font-size:24px;font-weight:700;margin-right:4px}
.scene-quote::after{content:"”";color:var(--primary);font-size:24px;font-weight:700;margin-left:4px}
.scene-section.alt .reverse .scene-media{order:2}
.scene-section.alt .reverse .scene-content{order:1}

/* ============ 流程步骤 ============ */
.steps-section{padding:96px 0;background:var(--panel);border-bottom:1px solid var(--border)}
.section-head{text-align:center;max-width:620px;margin:0 auto 56px}
.section-head .section-tag{margin-bottom:10px}
.section-head h2{font-size:32px;font-weight:700;line-height:1.3;margin-bottom:12px;letter-spacing:-.01em}
.section-head p{font-size:15px;color:var(--text-2)}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step-card{
  background:rgba(255,255,255,.03);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:32px 28px;
  transition:all .3s ease;position:relative;
  overflow:hidden;
}
.step-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  opacity:0;transition:opacity .3s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(var(--primary-rgb),.3)}
.step-card:hover::before{opacity:1}
.step-num{
  font-size:32px;font-weight:700;color:rgba(var(--primary-rgb),.35);
  line-height:1;display:block;margin-bottom:18px;
  font-family:"Inter",sans-serif;letter-spacing:-.03em;
}
.step-card h3{font-size:17px;font-weight:600;margin-bottom:10px}
.step-card p{font-size:14px;color:var(--text-2);line-height:1.7}

/* ============ CTA Banner ============ */
.cta-banner{padding:64px 0}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:linear-gradient(135deg,rgba(var(--primary-rgb),.08),rgba(122,124,255,.06));
  border:1px solid rgba(var(--primary-rgb),.25);
  border-radius:var(--radius);
  padding:48px 56px;
}
.cta-text h2{font-size:26px;font-weight:700;line-height:1.3;margin-bottom:10px}
.cta-text p{font-size:15px;color:var(--text-2)}
.cta-actions{display:flex;gap:16px;flex-shrink:0}

/* ============ FAQ ============ */
.faq-section{padding:96px 0;background:var(--panel);border-bottom:1px solid var(--border)}
.faq-list{max-width:760px;margin:0 auto}
.faq-item{
  background:var(--panel-2);
  border:1px solid var(--border);
  border-radius:12px;margin-bottom:14px;
  overflow:hidden;transition:border-color .3s ease;
  position:relative;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--primary);border-radius:0 3px 3px 0;
  opacity:0;transition:opacity .3s ease;
}
.faq-item.open{border-color:rgba(var(--primary-rgb),.2)}
.faq-item.open::before{opacity:1}
.faq-question{
  width:100%;min-height:60px;display:flex;align-items:center;justify-content:space-between;
  padding:16px 24px;font-size:15px;font-weight:500;color:var(--text);
  text-align:left;cursor:pointer;transition:color .3s ease;
}
.faq-question:hover{color:var(--primary)}
.faq-icon{position:relative;width:16px;height:16px;flex-shrink:0;margin-left:16px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--text-2);border-radius:2px;
  transition:all .3s ease;
}
.faq-icon::before{width:16px;height:2px;top:7px;left:0}
.faq-icon::after{width:2px;height:16px;top:0;left:7px}
.faq-item.open .faq-icon::after{transform:scaleY(0)}
.faq-item.open .faq-icon::before{background:var(--primary)}
.faq-answer{
  max-height:0;overflow:hidden;transition:max-height .35s ease;
}
.faq-item.open .faq-answer{max-height:320px}
.faq-answer p{
  padding:0 24px 20px;font-size:14px;color:var(--text-2);line-height:1.8;
}

/* ============ 相关分类 ============ */
.related-section{padding:96px 0}
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.related-card{
  display:block;background:rgba(255,255,255,.03);
  border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;transition:all .3s ease;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(var(--primary-rgb),.35)}
.related-card img{width:100%;height:160px;object-fit:cover;border-bottom:1px solid var(--border)}
.related-body{padding:20px 22px 22px}
.related-body h3{font-size:16px;font-weight:600;margin-bottom:8px;transition:color .3s ease}
.related-card:hover .related-body h3{color:var(--primary)}
.related-body p{font-size:13px;color:var(--text-2);line-height:1.6;margin-bottom:14px}
.link-arrow{
  font-size:13px;font-weight:500;color:var(--primary);
  display:inline-flex;align-items:center;gap:6px;transition:gap .3s ease;
}
.related-card:hover .link-arrow{gap:10px}

/* ============ 页脚 ============ */
.site-footer{
  background:#080C14;
  border-top:1px solid var(--border);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;
  padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{
  font-size:14px;color:var(--text-2);line-height:1.8;max-width:260px;
}
.footer-col h4{
  font-size:14px;font-weight:600;color:var(--text);
  margin-bottom:18px;letter-spacing:.02em;
}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{
  font-size:13px;color:var(--text-2);transition:color .3s ease,transform .3s ease;
  display:inline-block;transform:translateX(0);
}
.footer-col ul a:hover{color:var(--primary);transform:translateX(4px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;
}
.copyright{font-size:13px;color:var(--text-2)}
.back-top{
  width:36px;height:36px;border-radius:50%;
  background:var(--primary);color:#0B0F1A;
  display:flex;align-items:center;justify-content:center;
  transition:all .3s ease;cursor:pointer;
}
.back-top:hover{transform:translateY(-3px);box-shadow:0 6px 20px rgba(var(--primary-rgb),.35)}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:900;
  opacity:0;visibility:hidden;transform:translateY(16px);
  transition:all .4s ease;
}
.float-cta.visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-main{
  width:64px;height:64px;border-radius:50%;
  background:var(--panel-2);border:1px solid rgba(var(--primary-rgb),.5);
  color:var(--primary);display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow);cursor:pointer;
  transition:all .3s ease;animation:floatMove 3s ease-in-out infinite;
}
.float-main:hover{background:var(--primary);color:#0B0F1A;border-color:var(--primary)}
@keyframes floatMove{0%,100%{transform:translateY(0)}50%{transform:translateY(-4px)}}
.float-panel{
  position:absolute;right:0;bottom:calc(100% + 12px);
  display:none;flex-direction:column;gap:10px;min-width:160px;
  background:var(--panel);border:1px solid var(--border);
  border-radius:12px;padding:16px;box-shadow:var(--shadow-lg);
}
.float-panel.show{display:flex;animation:popIn .3s ease}
@keyframes popIn{from{opacity:0;transform:translateY(8px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}
.float-panel .btn{width:100%}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-links{display:none}
  .search-box{display:none}
  .icon-btn{display:none}
  .hamburger{display:flex}
  .mobile-menu{display:block}
  .scene-grid{grid-template-columns:1fr;gap:40px}
  .scene-section.alt .reverse .scene-media{order:1}
  .scene-section.alt .reverse .scene-content{order:2}
  .steps-grid{grid-template-columns:repeat(2,1fr)}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:40px 32px}
  .page-hero{padding-top:calc(var(--header-h) + 56px)}
  .page-hero h1{font-size:38px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .page-hero{padding:calc(var(--header-h) + 48px) 0 40px}
  .page-hero h1{font-size:32px}
  .hero-sub{font-size:16px}
  .scene-section,.steps-section,.faq-section,.related-section{padding:64px 0}
  .steps-grid,.related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .cta-inner{padding:32px 24px}
  .cta-actions{flex-direction:column;width:100%}
  .cta-actions .btn{width:100%}
  .scene-content h2{font-size:24px}
  .scene-grid{gap:28px}
  .scene-media img{border-radius:12px}
  .footer-bottom{flex-direction:column;gap:16px;text-align:center}
  .float-cta{
    opacity:1 !important;visibility:visible !important;transform:none !important;
    left:20px;right:20px;bottom:20px;top:auto;z-index:900;
  }
  .float-main{display:none}
  .float-panel{
    position:static;display:flex !important;flex-direction:row;width:100%;
    background:var(--panel);border:1px solid rgba(var(--primary-rgb),.3);
    border-radius:12px;padding:10px;box-shadow:var(--shadow-lg);
    opacity:1;visibility:visible;transform:none;animation:none;
  }
  .float-panel .btn{flex:1}
}
@media (max-width:520px){
  .logo-mark{font-size:18px}
  .logo-sub{font-size:11px}
  .header-cta{padding:0 16px;font-size:13px;height:36px}
  .hero-chips .chip{font-size:12px;padding:6px 12px}
  .section-head h2{font-size:24px}
  .point p{font-size:13px}
}