/* roulang page: index */
:root{
  --primary:#00C48C;
  --primary-dark:#008A63;
  --primary-glow:rgba(0,196,140,0.15);
  --accent:#FF6B35;
  --accent-dark:#E8551F;
  --bg-dark:#0D1117;
  --bg-dark-2:#161B22;
  --bg-dark-3:#1E2630;
  --bg-light:#F6F8FA;
  --bg-card:#FFFFFF;
  --text-dark:#1A2333;
  --text-secondary-dark:#4B5563;
  --text-muted-dark:#8492A6;
  --text-light:#E6EDF3;
  --text-light-secondary:#99A6B3;
  --text-light-muted:#6E7B87;
  --border-dark:rgba(255,255,255,0.10);
  --border-light:#E4E8EC;
  --radius-lg:12px;
  --radius-md:8px;
  --radius-sm:6px;
  --shadow-sm:0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:0 6px 16px rgba(0,0,0,0.4);
  --shadow-lg:0 12px 32px rgba(0,0,0,0.5);
  --section-space:80px;
  --container-w:1200px;
  --header-h:64px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei','Segoe UI',Roboto,sans-serif;
  background:var(--bg-dark);
  color:var(--text-light);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:all .25s ease}
a:hover{color:var(--primary-dark)}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;border:none;outline:none;background:none}
input::placeholder{color:var(--text-light-muted)}
.container{width:100%;max-width:var(--container-w);margin:0 auto;padding:0 24px}
.section{padding:var(--section-space) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:40px;gap:20px}
.section-head.center{flex-direction:column;align-items:center;text-align:center}
.section-title{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:800;line-height:1.3;color:var(--text-light);letter-spacing:0}
.section-title span{color:var(--primary)}
.section-title-line{width:44px;height:4px;background:var(--primary);border-radius:2px;margin-top:12px}
.section-sub{color:var(--text-light-secondary);font-size:0.95rem;max-width:560px;margin-top:12px}
.light-section{background:var(--bg-light)}
.light-section .section-title{color:var(--text-dark)}
.light-section .section-sub{color:var(--text-secondary-dark)}
/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 28px;border-radius:10px;font-size:1rem;font-weight:600;
  cursor:pointer;transition:all .25s ease;border:1px solid transparent;line-height:1.2;
}
.btn:hover{filter:brightness(1.1);transform:scale(1.02)}
.btn:focus-visible{outline:3px solid var(--primary-glow);outline-offset:2px}
.btn-primary{background:var(--primary);color:#07120D}
.btn-primary:hover{background:var(--primary);color:#07120D}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent);color:#fff}
.btn-outline{border-color:rgba(255,255,255,0.25);color:var(--text-light)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);background:rgba(0,196,140,0.08)}
.btn-lg{padding:16px 40px;font-size:1.05rem;border-radius:12px}
.btn-sm{padding:8px 18px;font-size:0.875rem;border-radius:8px}
/* ===== Header / Nav ===== */
.site-header{
  position:fixed;top:0;left:0;width:100%;z-index:1000;
  height:var(--header-h);
  transition:background .35s ease,box-shadow .35s ease,backdrop-filter .35s ease;
  background:transparent;
}
.site-header.scrolled{
  background:rgba(13,17,23,0.85);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:0 1px 0 rgba(255,255,255,0.06),var(--shadow-md);
}
.header-inner{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo a{display:flex;align-items:center;gap:10px}
.logo-icon{flex-shrink:0}
.logo-text{font-size:1.25rem;font-weight:800;color:var(--text-light);letter-spacing:0;white-space:nowrap}
.logo-text:hover{color:var(--primary)}
.main-nav{display:flex;align-items:center;gap:28px}
.nav-link{
  font-size:0.9375rem;font-weight:500;color:var(--text-light-secondary);
  position:relative;padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:'';position:absolute;left:0;bottom:0;width:0;height:2px;
  background:var(--primary);transition:width .3s ease;border-radius:1px;
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{width:100%}
.header-actions{display:flex;align-items:center;gap:14px}
.search-wrap{position:relative;display:flex;align-items:center}
.search-toggle{
  width:36px;height:36px;display:flex;align-items:center;justify-content:center;
  color:var(--text-light-secondary);border-radius:8px;cursor:pointer;transition:all .25s;
}
.search-toggle:hover{color:var(--primary);background:rgba(0,196,140,0.08)}
.search-input{
  width:0;opacity:0;overflow:hidden;padding:0;border:1px solid transparent;
  background:rgba(255,255,255,0.06);color:var(--text-light);border-radius:8px;
  transition:all .35s ease;height:36px;font-size:0.875rem;
}
.search-input.open{
  width:240px;opacity:1;padding:0 14px;border-color:rgba(0,196,140,0.4);
}
.search-input.open:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}
.hamburger{
  display:none;width:44px;height:44px;flex-direction:column;align-items:center;
  justify-content:center;gap:5px;cursor:pointer;z-index:1102;background:none;
}
.hamburger span{display:block;width:22px;height:2px;background:var(--text-light);border-radius:2px;transition:all .3s ease}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,0.6);z-index:1001;
  opacity:0;visibility:hidden;transition:all .3s ease;backdrop-filter:blur(2px);
}
.nav-overlay.show{opacity:1;visibility:visible}
/* ===== Hero ===== */
.hero{
  min-height:calc(100vh - var(--header-h));
  display:flex;align-items:center;
  padding:80px 0 60px;
  position:relative;
  background:linear-gradient(180deg,#0D1117 0%,#0A0E13 100%);
  overflow:hidden;
}
.hero::before{
  content:'';position:absolute;top:0;right:0;width:600px;height:600px;
  background:radial-gradient(circle,rgba(0,196,140,0.15),transparent 70%);
  pointer-events:none;
}
.hero::after{
  content:'';position:absolute;bottom:-100px;left:-100px;width:400px;height:400px;
  background:radial-gradient(circle,rgba(255,107,53,0.08),transparent 70%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:55% 45%;gap:48px;align-items:center;position:relative;z-index:2}
.hero-content{padding-right:20px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;background:rgba(0,196,140,0.12);
  color:var(--primary);padding:6px 16px;border-radius:999px;font-size:0.8125rem;font-weight:600;margin-bottom:20px;
}
.hero-badge i{font-size:0.75rem}
.hero h1{
  font-size:clamp(2.2rem,5vw,3.6rem);font-weight:800;line-height:1.15;
  color:var(--text-light);margin-bottom:20px;letter-spacing:0;
}
.hero h1 .highlight{color:var(--primary)}
.hero-desc{
  font-size:1.0625rem;color:var(--text-light-secondary);line-height:1.8;margin-bottom:28px;max-width:520px;
}
.hero-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.hero-trust{
  display:flex;gap:20px;flex-wrap:wrap;margin-top:36px;padding-top:24px;
  border-top:1px solid var(--border-dark);
}
.trust-item{display:flex;align-items:center;gap:8px;font-size:0.8125rem;color:var(--text-light-muted)}
.trust-item i{color:var(--primary);font-size:0.875rem}
.hero-visual{position:relative;height:520px;border-radius:16px;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  transition:transform .6s ease;
}
.hero-visual:hover .hero-bg{transform:scale(1.03)}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(13,17,23,0.35) 0%,rgba(13,17,23,0.05) 50%,rgba(13,17,23,0.5) 100%);
}
.hero-grid-lines{
  position:absolute;inset:0;opacity:0.08;
  background-image:linear-gradient(rgba(255,255,255,0.4) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,0.4) 1px,transparent 1px);
  background-size:30px 30px;
  pointer-events:none;
}
.hero-glass-card{
  position:absolute;bottom:24px;right:24px;
  background:rgba(255,255,255,0.08);backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,0.15);
  border-radius:var(--radius-lg);
  padding:18px;display:flex;align-items:center;gap:14px;
  box-shadow:var(--shadow-lg);
}
.qr-box{background:#fff;border-radius:8px;padding:6px;flex-shrink:0}
.qr-box svg{display:block}
.qr-text{color:#fff;font-size:0.8125rem;font-weight:600;line-height:1.5}
.qr-text small{display:block;color:rgba(255,255,255,0.75);font-weight:400;font-size:0.75rem;margin-top:2px}
/* ===== Pain Section ===== */
.pain-section{padding:var(--section-space) 0;background:var(--bg-dark-2);position:relative}
.pain-section::before{
  content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,196,140,0.3),transparent);
}
.pain-grid{display:grid;grid-template-columns:1fr 1.6fr;gap:56px;align-items:start}
.pain-left .section-title{font-size:clamp(1.4rem,2.5vw,2rem);margin-bottom:16px}
.pain-left p{color:var(--text-light-secondary);font-size:0.9375rem;line-height:1.8;max-width:380px}
.pain-cards{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.pain-card{
  background:var(--bg-dark-3);border:1px solid var(--border-dark);
  border-radius:var(--radius-lg);padding:28px 24px;
  transition:all .3s ease;position:relative;overflow:hidden;
}
.pain-card::before{
  content:'';position:absolute;top:0;left:0;width:3px;height:100%;
  background:var(--primary);opacity:0;transition:opacity .3s;
}
.pain-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(0,196,140,0.3)}
.pain-card:hover::before{opacity:1}
.pain-icon{
  width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(0,196,140,0.12);color:var(--primary);font-size:1.125rem;margin-bottom:16px;
}
.pain-card h3{font-size:1.0625rem;font-weight:600;color:var(--text-light);margin-bottom:8px}
.pain-card p{font-size:0.8125rem;color:var(--text-light-muted);line-height:1.65}
/* ===== Solution Section ===== */
.solution-section{padding:var(--section-space) 0;background:var(--bg-dark)}
.solution-block{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:40px 0;position:relative;
}
.solution-block + .solution-block{border-top:1px solid var(--border-dark)}
.solution-block:nth-child(odd) .solution-img{order:1}
.solution-block:nth-child(odd) .solution-content{order:2}
.solution-img{position:relative;border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:16/10}
.solution-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.solution-img:hover img{transform:scale(1.05)}
.solution-img::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(13,17,23,0.6) 100%)}
.solution-content h3{font-size:clamp(1.3rem,2vw,1.7rem);font-weight:700;color:var(--text-light);margin-bottom:16px;line-height:1.4}
.solution-content p{color:var(--text-light-secondary);font-size:0.9375rem;margin-bottom:20px;line-height:1.8}
.solution-list{display:flex;flex-direction:column;gap:14px}
.solution-list li{
  display:flex;align-items:flex-start;gap:12px;font-size:0.9375rem;color:var(--text-light);
}
.solution-list li i{color:var(--primary);font-size:1rem;margin-top:3px;flex-shrink:0}
.solution-list li small{display:block;color:var(--text-light-muted);font-size:0.8125rem;line-height:1.6}
/* ===== Stats ===== */
.stats-section{padding:var(--section-space) 0;background:var(--bg-dark-2);position:relative}
.stats-section::before{
  content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,107,53,0.25),transparent);
}
.stats-row{
  display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-top:20px;
  border-bottom:1px solid var(--border-dark);padding-bottom:48px;
}
.stat-item{text-align:center;position:relative}
.stat-item + .stat-item::before{
  content:'';position:absolute;left:-16px;top:20%;width:1px;height:60%;
  background:var(--border-dark);
}
.stat-num{
  font-family:'Inter','DIN Alternate',-apple-system,sans-serif;
  font-size:clamp(2rem,4vw,3rem);font-weight:800;color:var(--accent);
  line-height:1.1;
}
.stat-num span{font-size:1.5rem;font-weight:700;margin-left:2px}
.stat-label{font-size:0.8125rem;color:var(--text-light-muted);margin-top:8px;line-height:1.5}
/* ===== Testimonials ===== */
.testimonial-section{padding:var(--section-space) 0;background:var(--bg-dark)}
.testimonial-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.testimonial-card{
  background:var(--bg-dark-3);border:1px solid var(--border-dark);
  border-radius:var(--radius-lg);padding:28px;transition:all .3s ease;
}
.testimonial-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(0,196,140,0.2)}
.testimonial-user{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.testimonial-avatar{
  width:40px;height:40px;border-radius:50%;background:rgba(0,196,140,0.15);
  display:flex;align-items:center;justify-content:center;color:var(--primary);
  font-size:0.875rem;font-weight:700;flex-shrink:0;
}
.testimonial-name{font-size:0.9375rem;font-weight:600;color:var(--text-light)}
.testimonial-role{font-size:0.75rem;color:var(--text-light-muted)}
.testimonial-stars{color:var(--accent);font-size:0.75rem;margin-left:auto;letter-spacing:2px}
.testimonial-text{
  font-size:0.9375rem;color:var(--text-light-secondary);line-height:1.8;
  border-left:3px solid var(--primary);padding-left:16px;margin-top:8px;
}
/* ===== FAQ ===== */
.faq-section{padding:var(--section-space) 0;background:var(--bg-dark-2);position:relative}
.faq-section::before{
  content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,196,140,0.3),transparent);
}
.faq-grid{display:grid;grid-template-columns:0.85fr 1.35fr;gap:56px;align-items:start}
.faq-left .section-title{font-size:clamp(1.4rem,2.5vw,2rem);margin-bottom:16px}
.faq-left p{color:var(--text-light-secondary);font-size:0.9375rem;line-height:1.8}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--bg-dark-3);border:1px solid var(--border-dark);
  border-radius:var(--radius-md);overflow:hidden;transition:all .3s ease;
}
.faq-item:hover{border-color:rgba(0,196,140,0.25)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 20px;
  font-size:0.9375rem;font-weight:600;color:var(--text-light);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  position:relative;transition:color .3s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--text-light-muted);font-size:0.8125rem;transition:transform .3s ease;flex-shrink:0}
.faq-item[open] summary{color:var(--primary)}
.faq-item[open] summary i{transform:rotate(180deg);color:var(--primary)}
.faq-item[open] summary::before{
  content:'';position:absolute;left:0;top:0;width:3px;height:100%;background:var(--primary);
}
.faq-answer{padding:0 20px 18px;font-size:0.875rem;color:var(--text-light-secondary);line-height:1.8}
/* ===== CTA ===== */
.cta-section{
  padding:var(--section-space) 0;position:relative;overflow:hidden;
  background:linear-gradient(135deg,#0B1F1A 0%,#0D1117 55%,#1A120C 100%);
}
.cta-section::before{
  content:'';position:absolute;top:-80px;right:-80px;width:400px;height:400px;
  background:radial-gradient(circle,rgba(0,196,140,0.2),transparent 70%);
}
.cta-section::after{
  content:'';position:absolute;bottom:-100px;left:50%;width:500px;height:500px;
  background:radial-gradient(circle,rgba(255,107,53,0.1),transparent 70%);
}
.cta-inner{position:relative;z-index:2;max-width:680px;margin:0 auto;text-align:center}
.cta-title{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;color:var(--text-light);margin-bottom:12px}
.cta-sub{font-size:0.9375rem;color:var(--text-light-secondary);margin-bottom:36px}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-bottom:16px}
.cta-form input{
  height:48px;border-radius:8px;padding:0 18px;font-size:0.9375rem;
  background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12);
  color:var(--text-light);transition:all .3s ease;min-width:0;
}
.cta-form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}
.cta-form input[type="tel"]{flex:2 1 180px}
.cta-form input[type="text"]{flex:1 1 110px}
.cta-form .btn{height:48px;flex:0 0 auto}
.cta-note{font-size:0.75rem;color:var(--text-light-muted)}
.form-success{
  display:none;background:rgba(16,185,129,0.15);border:1px solid rgba(16,185,129,0.4);
  color:#34D399;padding:14px 20px;border-radius:8px;font-size:0.875rem;
  margin-top:16px;text-align:center;
}
.form-error{
  display:none;background:rgba(239,68,68,0.15);border:1px solid rgba(239,68,68,0.4);
  color:#F87171;padding:14px 20px;border-radius:8px;font-size:0.875rem;
  margin-top:16px;text-align:center;
}
/* ===== News Section ===== */
.news-section{background:var(--bg-light);padding:var(--section-space) 0}
.news-section .section-title{color:var(--text-dark)}
.news-section .section-sub{color:var(--text-secondary-dark)}
.section-more{
  font-size:0.875rem;font-weight:600;color:var(--primary-dark);
  display:inline-flex;align-items:center;gap:6px;
}
.section-more:hover{color:var(--primary);gap:10px}
.news-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:32px;align-items:stretch}
.news-feature-col{display:flex}
.news-list-col{display:flex;flex-direction:column;gap:16px}
.news-feature{
  background:var(--bg-card);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-sm);transition:all .35s ease;width:100%;
  display:flex;flex-direction:column;
}
.news-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.news-feature-link{display:flex;flex-direction:column;height:100%;color:inherit}
.news-feature-link:hover{color:inherit}
.news-feature-img{position:relative;aspect-ratio:16/8;overflow:hidden}
.news-feature-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.news-feature:hover .news-feature-img img{transform:scale(1.04)}
.news-badge{
  position:absolute;top:14px;left:14px;background:rgba(0,196,140,0.9);color:#fff;
  padding:4px 12px;border-radius:999px;font-size:0.75rem;font-weight:600;z-index:2;
}
.news-feature-body{padding:24px;display:flex;flex-direction:column;flex:1}
.news-feature-body h3{
  font-size:1.25rem;font-weight:700;color:var(--text-dark);line-height:1.4;
  margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-feature-body p{
  font-size:0.875rem;color:var(--text-secondary-dark);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px;
}
.news-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  color:var(--text-muted-dark);font-size:0.8125rem;
}
.read-more{color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:gap .3s}
.news-feature:hover .read-more{gap:12px}
.news-small{
  background:var(--bg-card);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);
  transition:all .3s ease;display:flex;gap:0;overflow:hidden;
}
.news-small:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.news-small-link{display:flex;width:100%;color:inherit;transition:color .3s}
.news-small-link:hover{color:inherit}
.news-small-img{width:132px;flex-shrink:0;position:relative;overflow:hidden;background:var(--bg-light)}
.news-small-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-small:hover .news-small-img img{transform:scale(1.06)}
.news-small-body{padding:16px 16px 12px;display:flex;flex-direction:column;flex:1;min-width:0}
.news-small-body h4{
  font-size:0.875rem;font-weight:600;color:var(--text-dark);line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-small-body time{font-size:0.75rem;color:var(--text-muted-dark);margin-top:auto}
.news-empty{
  border:2px dashed var(--border-light);border-radius:var(--radius-lg);
  height:260px;display:flex;align-items:center;justify-content:center;
  color:var(--text-muted-dark);font-size:0.9375rem;
  grid-column:1/-1;background:#fff;
}
.news-empty i{margin-right:8px;font-size:1.25rem}
/* ===== Tags Cloud ===== */
.tags-section{padding:48px 0;background:var(--bg-dark-2);border-top:1px solid var(--border-dark)}
.tags-inner{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.tags-label{font-size:0.8125rem;font-weight:600;color:var(--text-light-muted);white-space:nowrap}
.tags-wrap{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  font-size:0.75rem;color:var(--text-light-secondary);background:rgba(255,255,255,0.05);
  border:1px solid var(--border-dark);padding:6px 14px;border-radius:999px;
  transition:all .25s ease;
}
.tag:hover{color:var(--primary);border-color:rgba(0,196,140,0.35);background:rgba(0,196,140,0.08)}
/* ===== Footer ===== */
.site-footer{background:#0A0E13;padding:60px 0 0;position:relative}
.site-footer::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:rgba(255,255,255,0.08)}
.footer-grid{display:grid;grid-template-columns:1.3fr 0.8fr 1fr;gap:48px;padding-bottom:48px}
.footer-brand .logo-text{font-size:1.125rem;margin-bottom:12px;display:inline-block}
.footer-brand p{font-size:0.875rem;color:var(--text-light-muted);line-height:1.8;margin-top:12px;max-width:360px}
.footer-col h4{font-size:0.9375rem;font-weight:600;color:var(--text-light);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul li a{font-size:0.875rem;color:var(--text-light-secondary);transition:all .25s;display:inline-flex;align-items:center;gap:6px}
.footer-col ul li a:hover{color:var(--primary);padding-left:4px}
.footer-contact{font-size:0.875rem;color:var(--text-light-secondary);line-height:2.2;display:flex;flex-direction:column;gap:8px}
.footer-contact span i{width:22px;color:var(--primary)}
.footer-contact .btn{margin-top:12px;align-self:flex-start}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.08);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
}
.footer-copy{font-size:0.8125rem;color:var(--text-light-muted)}
.footer-bottom-links{display:flex;gap:20px}
.footer-bottom-links a{font-size:0.8125rem;color:var(--text-light-muted)}
.footer-bottom-links a:hover{color:var(--primary)}
/* ===== Responsive ===== */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr 1fr;gap:36px}
  .hero-visual{height:440px}
  .pain-grid{grid-template-columns:1fr;gap:36px}
  .faq-grid{grid-template-columns:1fr;gap:36px}
  .news-grid{grid-template-columns:1fr}
  .stats-row{grid-template-columns:repeat(2,1fr);gap:40px 24px}
  .stat-item + .stat-item::before{display:none}
}
@media (max-width:768px){
  :root{--section-space:48px;--header-h:56px}
  .container{padding:0 16px}
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:300px;
    background:var(--bg-dark-2);flex-direction:column;gap:0;
    padding:80px 24px 24px;z-index:1100;
    transform:translateX(100%);transition:transform .4s ease;
    box-shadow:var(--shadow-lg);border-left:1px solid var(--border-dark);
  }
  .main-nav.open{transform:translateX(0)}
  .nav-link{width:100%;padding:14px 8px;border-bottom:1px solid var(--border-dark);font-size:0.9375rem}
  .nav-link::after{display:none}
  .nav-link.active{background:rgba(0,196,140,0.08);border-radius:8px;border-left:3px solid var(--primary);padding-left:14px}
  .hamburger{display:flex}
  .search-input.open{position:absolute;top:44px;right:0;width:220px;z-index:10}
  .hero{min-height:auto;padding:120px 0 60px}
  .hero-grid{grid-template-columns:1fr}
  .hero-content{padding-right:0}
  .hero h1{font-size:clamp(1.8rem,6vw,2.4rem)}
  .hero-visual{height:380px;margin-top:20px}
  .hero-glass-card{bottom:16px;right:16px;padding:12px}
  .hero-trust{gap:12px;font-size:0.75rem}
  .pain-cards{grid-template-columns:1fr}
  .solution-block{grid-template-columns:1fr;gap:32px;padding:32px 0}
  .solution-block:nth-child(odd) .solution-img,.solution-block:nth-child(odd) .solution-content{order:0}
  .testimonial-grid{grid-template-columns:1fr}
  .cta-form{flex-direction:column}
  .cta-form .btn{width:100%}
  .news-grid{grid-template-columns:1fr}
  .news-small-img{width:112px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;text-align:center}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:520px){
  .section-title{font-size:1.4rem}
  .hero-actions{flex-direction:column;align-items:stretch;width:100%}
  .hero-actions .btn{width:100%}
  .stats-row{grid-template-columns:1fr 1fr;gap:24px 16px}
  .stat-num{font-size:1.8rem}
  .news-small-link{flex-direction:column}
  .news-small-img{width:100%;aspect-ratio:16/9}
  .news-feature-body{padding:18px}
  .news-feature-body h3{font-size:1.0625rem}
  .logo-text{font-size:1rem}
  .header-cta{display:none}
  .search-input.open{width:180px}
  .tags-inner{flex-direction:column;align-items:flex-start;gap:12px}
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #00C48C;
            --primary-dark: #008A63;
            --primary-glow: rgba(0, 196, 140, 0.15);
            --accent: #FF6B35;
            --accent-dark: #E55A2B;
            --bg-dark: #0D1117;
            --bg-raised: #161B22;
            --bg-card: #1E2630;
            --bg-card-hover: #232D3A;
            --text-light: #E6EDF3;
            --text-light-secondary: #99A6B3;
            --text-light-muted: #6E7B87;
            --border-dark: rgba(255, 255, 255, 0.10);
            --border-primary: rgba(0, 196, 140, 0.35);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
            --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.16);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.24);
            --section-space: 80px;
            --header-height: 64px;
            --container-width: 1200px;
            --font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            scroll-padding-top: 90px;
        }
        body {
            font-family: var(--font-family);
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.8;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        ul,
        ol {
            list-style: none;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        input,
        select {
            font-family: inherit;
        }
        .no-scroll {
            overflow: hidden;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 576px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 区块通用 ===== */
        .section {
            padding: var(--section-space) 0;
        }
        .section-raised {
            background: var(--bg-raised);
        }
        .section-header {
            margin-bottom: 48px;
        }
        .section-header.center {
            text-align: center;
        }
        .section-header.center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--primary);
            background: rgba(0, 196, 140, 0.12);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .section-title {
            font-size: clamp(1.5rem, 3vw, 2.1rem);
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: 0;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-light-secondary);
            max-width: 720px;
            line-height: 1.8;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            border-radius: 10px;
            padding: 14px 28px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.25s ease;
            min-height: 44px;
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            transform: scale(1.02);
            box-shadow: 0 8px 20px rgba(255, 107, 53, 0.25);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--text-light);
            border-color: var(--border-dark);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 196, 140, 0.08);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-light);
            border-color: var(--border-dark);
        }
        .btn-ghost:hover,
        .btn-ghost:focus {
            background: rgba(255, 255, 255, 0.12);
            transform: scale(1.02);
        }
        .btn-lg {
            padding: 18px 44px;
            font-size: 17px;
            border-radius: 14px;
            min-height: 52px;
        }
        .btn-sm {
            padding: 10px 18px;
            font-size: 14px;
            border-radius: 8px;
            min-height: 38px;
        }
        .w-100 {
            width: 100%;
        }

        /* ===== Header 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: transparent;
            border-bottom: 1px solid transparent;
            transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(13, 17, 23, 0.85);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border-bottom-color: var(--border-dark);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 24px;
        }
        .logo-text {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-light);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
            letter-spacing: 0;
            text-decoration: none;
        }
        .logo-text:hover {
            color: var(--text-light);
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #0D1117;
            font-size: 1.05rem;
            flex-shrink: 0;
            box-shadow: 0 0 18px var(--primary-glow);
        }
        .logo-short {
            display: none;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            margin-right: auto;
            margin-left: 28px;
        }
        .main-nav .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light-secondary);
            position: relative;
            padding: 8px 2px;
            transition: color 0.25s ease;
            text-decoration: none;
        }
        .main-nav .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 3px;
            border-radius: 3px;
            background: var(--primary);
            transition: width 0.3s ease;
        }
        .main-nav .nav-link:hover {
            color: var(--text-light);
        }
        .main-nav .nav-link:hover::after,
        .main-nav .nav-link.active::after {
            width: 100%;
        }
        .main-nav .nav-link.active {
            color: var(--primary);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-toggle,
        .menu-toggle {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-dark);
            color: var(--text-light-secondary);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: all 0.25s ease;
        }
        .search-toggle:hover,
        .menu-toggle:hover {
            color: var(--primary);
            border-color: var(--border-primary);
            background: rgba(0, 196, 140, 0.1);
        }
        .menu-toggle {
            display: none;
        }

        /* 搜索展开 */
        .search-expand {
            position: absolute;
            top: calc(100% + 8px);
            right: 24px;
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-raised);
            border: 1px solid var(--border-dark);
            border-radius: 10px;
            padding: 6px 8px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-6px);
            transition: all 0.25s ease;
            z-index: 1101;
        }
        .search-expand.open {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .search-expand input {
            width: 220px;
            height: 36px;
            background: transparent;
            border: none;
            color: var(--text-light);
            font-size: 14px;
            outline: none;
        }
        .search-expand input::placeholder {
            color: var(--text-light-muted);
        }
        .search-expand button {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--primary);
            border: none;
            color: #0D1117;
            cursor: pointer;
            transition: background 0.25s ease;
        }
        .search-expand button:hover {
            background: var(--primary-dark);
        }

        /* 移动端抽屉 */
        .drawer-overlay {
            position: fixed;
            inset: 0;
            z-index: 1090;
            background: rgba(0, 0, 0, 0.55);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }
        .drawer-overlay.show {
            opacity: 1;
            visibility: visible;
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: 288px;
            z-index: 1100;
            background: var(--bg-raised);
            padding: 24px;
            transform: translateX(100%);
            transition: transform 0.3s ease;
            display: flex;
            flex-direction: column;
            box-shadow: -12px 0 32px rgba(0, 0, 0, 0.35);
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .drawer-close {
            align-self: flex-end;
            background: none;
            border: none;
            color: var(--text-light-secondary);
            font-size: 20px;
            cursor: pointer;
            padding: 10px;
            border-radius: 8px;
            transition: all 0.25s ease;
        }
        .drawer-close:hover {
            color: var(--primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .drawer-nav {
            margin-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .drawer-nav a {
            font-size: 16px;
            color: var(--text-light-secondary);
            padding: 14px 12px;
            border-radius: 10px;
            transition: all 0.25s ease;
            text-decoration: none;
        }
        .drawer-nav a:hover,
        .drawer-nav a.active {
            background: rgba(0, 196, 140, 0.1);
            color: var(--primary);
        }
        .drawer-cta {
            margin-top: auto;
            padding-top: 24px;
        }

        /* ===== 页面 Banner ===== */
        .page-banner {
            position: relative;
            min-height: 280px;
            max-height: 280px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-top: var(--header-height);
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(13, 17, 23, 0.93) 0%, rgba(13, 17, 23, 0.75) 50%, rgba(13, 17, 23, 0.5) 100%);
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 80% 20%, rgba(0, 196, 140, 0.1), transparent 55%);
        }
        .banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 40px 24px;
            max-width: 860px;
            margin: 0 auto;
        }
        .breadcrumb {
            margin-bottom: 14px;
            font-size: 13px;
            color: var(--text-light-muted);
            letter-spacing: 0.02em;
        }
        .breadcrumb a {
            color: var(--text-light-muted);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            margin: 0 6px;
            color: var(--text-light-muted);
        }
        .breadcrumb .current {
            color: var(--primary);
        }
        .banner-content h1 {
            font-size: clamp(1.5rem, 3vw, 2.1rem);
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .banner-content h1 span {
            color: var(--primary);
        }
        .banner-content p {
            font-size: 15px;
            color: var(--text-light-secondary);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.8;
        }

        /* ===== 核心保障 ===== */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .guarantee-card {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        .guarantee-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), transparent);
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .guarantee-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border-primary);
        }
        .guarantee-card:hover::before {
            opacity: 1;
        }
        .guarantee-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(0, 196, 140, 0.12);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 18px;
        }
        .guarantee-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-light);
        }
        .guarantee-card p {
            font-size: 14px;
            color: var(--text-light-secondary);
            line-height: 1.75;
        }

        /* ===== 下载流程 ===== */
        .flow-section {
            background: var(--bg-raised);
        }
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .flow-step {
            text-align: center;
            padding: 36px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-dark);
            position: relative;
            transition: all 0.3s ease;
        }
        .flow-step:hover {
            transform: translateY(-4px);
            border-color: var(--border-primary);
            box-shadow: var(--shadow-md);
        }
        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #0D1117;
            font-size: 1.2rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 0 20px var(--primary-glow);
        }
        .flow-step h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-light);
        }
        .flow-step p {
            font-size: 13px;
            color: var(--text-light-secondary);
            line-height: 1.7;
        }

        /* ===== 适用场景 ===== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .scenario-card {
            background: transparent;
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            transition: all 0.3s ease;
        }
        .scenario-card:hover {
            background: var(--bg-card);
            border-color: var(--border-primary);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .scenario-icon {
            font-size: 1.8rem;
            color: var(--accent);
            margin-bottom: 14px;
        }
        .scenario-card h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-light);
        }
        .scenario-card p {
            font-size: 13px;
            color: var(--text-light-secondary);
            line-height: 1.7;
        }

        /* ===== 热门游戏库（Foundation 栅格） ===== */
        .library-section {
            background: linear-gradient(180deg, #10161D 0%, #0D1117 100%);
        }
        .library-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-dark);
            transition: all 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .library-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border-primary);
        }
        .library-cover {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .library-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .library-card:hover .library-cover img {
            transform: scale(1.05);
        }
        .library-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            background: rgba(0, 196, 140, 0.88);
            color: #0D1117;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            backdrop-filter: blur(4px);
        }
        .library-body {
            padding: 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .library-body h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-light);
        }
        .library-body p {
            font-size: 13px;
            color: var(--text-light-secondary);
            line-height: 1.6;
            flex: 1;
        }
        .library-meta {
            margin-top: 14px;
            font-size: 12px;
            color: var(--text-light-muted);
            display: flex;
            gap: 12px;
            border-top: 1px solid var(--border-dark);
            padding-top: 12px;
        }
        .library-meta i {
            color: var(--primary);
            margin-right: 4px;
        }

        /* ===== FAQ ===== */
        .faq-layout {
            display: grid;
            grid-template-columns: 0.85fr 1.15fr;
            gap: 60px;
            align-items: start;
        }
        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }
        .faq-accordion .accordion-item.is-active {
            border-color: var(--border-primary);
        }
        .faq-accordion .accordion-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-light);
            padding: 18px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            line-height: 1.5;
            border-bottom: none;
            background: transparent;
            margin: 0;
            text-decoration: none;
            outline: none;
        }
        .faq-accordion .accordion-title:hover,
        .faq-accordion .accordion-title:focus {
            color: var(--primary);
            background: rgba(0, 196, 140, 0.04);
        }
        .faq-accordion .accordion-title::before {
            content: none;
        }
        .faq-accordion .accordion-title::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 13px;
            color: var(--text-light-muted);
            transform: rotate(0deg);
            transition: transform 0.3s ease, color 0.3s ease;
            margin: 0;
            position: static;
        }
        .faq-accordion .accordion-item.is-active .accordion-title::after {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-accordion .accordion-content {
            padding: 0 20px 20px;
            color: var(--text-light-secondary);
            font-size: 14px;
            line-height: 1.8;
            border-bottom: none;
            background: transparent;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, #0B1220 0%, #0F2A24 60%, #0D1117 100%);
            padding: 80px 0;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 20%, rgba(0, 196, 140, 0.14), transparent 55%);
        }
        .cta-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(0, 196, 140, 0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 196, 140, 0.04) 1px, transparent 1px);
            background-size: 40px 40px;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 720px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .cta-section h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 32px;
            font-size: 15px;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
        }
        .cta-note {
            margin-top: 20px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }
        .back-home {
            display: inline-block;
            margin-top: 28px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        .back-home:hover {
            color: var(--primary);
        }
        .back-home i {
            margin-right: 6px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0A0E13;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 1.2fr;
            gap: 48px;
            padding-bottom: 44px;
        }
        .footer-brand .logo-text {
            color: var(--text-light);
            font-size: 1.2rem;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-light-muted);
            margin-top: 14px;
            line-height: 1.8;
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 18px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            color: var(--text-light-muted);
            font-size: 14px;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        .footer-col ul a:hover {
            color: var(--primary);
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-contact span {
            color: var(--text-light-muted);
            font-size: 14px;
        }
        .footer-contact i {
            color: var(--primary);
            margin-right: 6px;
            width: 16px;
            text-align: center;
        }
        .footer-contact .btn {
            margin-top: 8px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 22px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-copy {
            font-size: 13px;
            color: var(--text-light-muted);
        }
        .footer-copy a {
            color: var(--text-light-muted);
            text-decoration: none;
        }
        .footer-copy a:hover {
            color: var(--primary);
        }
        .footer-bottom-links {
            display: flex;
            gap: 20px;
        }
        .footer-bottom-links a {
            font-size: 13px;
            color: var(--text-light-muted);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        .footer-bottom-links a:hover {
            color: var(--primary);
        }

        /* ===== 响应式断点 ===== */
        @media (max-width: 992px) {
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .faq-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .main-nav {
                gap: 20px;
                margin-left: 16px;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .menu-toggle {
                display: inline-flex;
            }
            .section {
                padding: 48px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .page-banner {
                min-height: 240px;
                max-height: 240px;
            }
            .header-inner {
                gap: 12px;
            }
            .logo-text .btn-sm {
                display: none;
            }
        }
        @media (max-width: 576px) {
            .guarantee-grid,
            .scenario-grid,
            .flow-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-actions {
                flex-direction: column;
                width: 100%;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .btn-lg {
                width: 100%;
            }
            .search-expand input {
                width: 160px;
            }
            .page-banner {
                min-height: 220px;
                max-height: 220px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .logo-full {
                display: none;
            }
            .logo-short {
                display: inline;
            }
            .header-actions .btn-sm {
                display: none;
            }
            .search-toggle {
                width: 36px;
                height: 36px;
            }
        }

/* roulang page: article */
:root{
  --primary:#00C48C;
  --primary-dark:#008A63;
  --accent:#FF6B35;
  --bg-dark:#0D1117;
  --bg-dark-elev:#161B22;
  --card-dark:#1E2630;
  --text-dark:#E6EDF3;
  --text-dark-muted:#99A6B3;
  --text-dark-dim:#6E7B87;
  --bg-light:#F6F8FA;
  --card-light:#FFFFFF;
  --text-light:#1A2333;
  --text-light-muted:#4B5563;
  --border-light:#E4E8EC;
  --radius-lg:12px;
  --radius-md:8px;
  --shadow-sm:0 1px 3px rgba(0,0,0,0.12);
  --shadow-md:0 6px 16px rgba(0,0,0,0.16);
  --shadow-lg:0 12px 32px rgba(0,0,0,0.24);
  --section-space:80px;
  --font-cn:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:var(--font-cn);background:var(--bg-dark);color:var(--text-dark);line-height:1.8;font-size:16px;-webkit-font-smoothing:antialiased;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .3s;}
ul,ol{list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
button{cursor:pointer;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.container.narrow{max-width:760px;padding:0 20px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:10px;font-size:15px;font-weight:600;
  cursor:pointer;border:1px solid transparent;transition:all .3s ease;text-decoration:none;white-space:nowrap;line-height:1;
}
.btn-primary{background:var(--primary);color:#043B2A;}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,196,140,0.3);}
.btn-accent{background:var(--accent);color:#3A1200;}
.btn-accent:hover{background:#E85A26;color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(255,107,53,0.35);}
.btn-outline{background:transparent;border-color:rgba(255,255,255,0.25);color:var(--text-dark);}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);box-shadow:0 4px 14px rgba(0,196,140,0.15);}
.btn-lg{height:56px;padding:0 38px;font-size:1.05rem;border-radius:12px;min-width:260px;}
.btn-sm{height:38px;padding:0 18px;font-size:13px;border-radius:8px;}
.badge{
  display:inline-flex;align-items:center;padding:3px 14px;border-radius:999px;
  background:rgba(0,196,140,0.15);color:var(--primary);font-size:12px;font-weight:600;line-height:1.6;
}
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;height:64px;
  display:flex;align-items:center;
  background:rgba(13,17,23,0.75);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{background:rgba(13,17,23,0.94);box-shadow:0 4px 24px rgba(0,0,0,0.45);}
.header-bar{display:flex;align-items:center;justify-content:space-between;width:100%;gap:16px;}
.logo{font-size:1.35rem;font-weight:800;color:var(--text-dark);white-space:nowrap;letter-spacing:0;transition:opacity .3s;}
.logo:hover{opacity:0.88;}
.logo span{color:var(--primary);}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:16px;}
.main-nav .nav-link{
  color:var(--text-dark-muted);font-size:15px;font-weight:500;padding:9px 14px;
  position:relative;white-space:nowrap;transition:color .3s;
}
.main-nav .nav-link::after{
  content:'';position:absolute;left:14px;right:14px;bottom:2px;height:3px;border-radius:999px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .3s ease;
}
.main-nav .nav-link:hover{color:var(--text-dark);}
.main-nav .nav-link:hover::after{transform:scaleX(1);}
.main-nav .nav-link.active{color:var(--text-dark);}
.main-nav .nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:10px;}
.search-wrap{position:relative;display:flex;align-items:center;}
.search-toggle{
  width:44px;height:44px;background:transparent;border:none;color:var(--text-dark-muted);
  font-size:1.05rem;display:flex;align-items:center;justify-content:center;border-radius:8px;
  transition:background .3s,color .3s;
}
.search-toggle:hover{color:var(--primary);background:rgba(0,196,140,0.12);}
.search-box{
  position:absolute;top:calc(100% + 12px);right:0;width:260px;display:none;z-index:1200;
}
.search-box.open{display:block;}
.search-box input{
  width:100%;height:44px;border:1px solid rgba(0,196,140,0.3);background:var(--bg-dark-elev);
  color:var(--text-dark);border-radius:8px;padding:0 14px;outline:none;box-shadow:var(--shadow-lg);
}
.search-box input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,196,140,0.2);}
.hamburger{display:none;width:44px;height:44px;background:transparent;border:none;position:relative;z-index:1200;}
.hamburger span{
  display:block;width:24px;height:2px;background:var(--text-dark);position:relative;margin:0 auto;transition:background .3s;
}
.hamburger span::before,.hamburger span::after{
  content:'';position:absolute;left:0;width:24px;height:2px;background:var(--text-dark);transition:transform .3s;
}
.hamburger span::before{top:-7px;}
.hamburger span::after{top:7px;}
.hamburger.open span{background:transparent;}
.hamburger.open span::before{transform:rotate(45deg);top:0;}
.hamburger.open span::after{transform:rotate(-45deg);top:0;}
.nav-overlay{display:none;}
.article-hero{
  position:relative;padding:130px 0 72px;background:var(--bg-dark);
  min-height:380px;display:flex;align-items:center;overflow:hidden;
}
.article-hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;opacity:0.32;z-index:0;
}
.article-hero::after{
  content:'';position:absolute;inset:0;z-index:1;
  background:
    radial-gradient(ellipse at 25% 40%,rgba(0,196,140,0.14) 0%,transparent 60%),
    linear-gradient(180deg,rgba(13,17,23,0.35) 0%,var(--bg-dark) 100%);
}
.article-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:0 10px;font-size:13px;color:var(--text-dark-muted);
}
.breadcrumb a{color:var(--text-dark-muted);transition:color .3s;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .separator{color:var(--text-dark-dim);}
.breadcrumb .current{
  color:var(--text-dark-muted);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.article-hero h1{
  font-size:clamp(1.6rem,3.5vw,2.4rem);font-weight:800;line-height:1.35;
  color:var(--text-dark);margin:20px 0 18px;letter-spacing:0;
}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px 20px;color:var(--text-dark-muted);font-size:14px;}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}
.article-meta i{color:var(--primary);}
.article-body-sec{background:var(--bg-light);padding:var(--section-space) 0 72px;color:var(--text-light);}
.article-content{
  background:var(--card-light);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);
  padding:48px 60px;margin-bottom:24px;
}
.article-content p{margin:0 0 1.6em;line-height:1.88;color:var(--text-light-muted);}
.article-content h2{
  font-size:1.4rem;font-weight:700;color:var(--text-light);margin:2em 0 1em;
  padding-left:14px;border-left:4px solid var(--primary);line-height:1.45;
}
.article-content h3{font-size:1.2rem;font-weight:700;color:var(--text-light);margin:1.8em 0 0.8em;line-height:1.5;}
.article-content img{border-radius:12px;margin:28px auto;box-shadow:var(--shadow-sm);}
.article-content a{color:var(--primary-dark);text-decoration:underline;text-underline-offset:4px;}
.article-content a:hover{color:var(--primary);}
.article-content ul,.article-content ol{margin:0 0 1.6em;padding-left:26px;}
.article-content li{margin-bottom:0.6em;line-height:1.85;color:var(--text-light-muted);}
.article-content blockquote{
  border-left:4px solid var(--primary);background:rgba(0,196,140,0.06);
  padding:20px 26px;border-radius:0 12px 12px 0;margin:1.6em 0;color:var(--text-light-muted);
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content table{width:100%;border-collapse:collapse;margin:1.6em 0;}
.article-content th,.article-content td{border:1px solid var(--border-light);padding:10px 14px;text-align:left;color:var(--text-light-muted);}
.article-content th{background:var(--bg-light);font-weight:600;}
.not-found{
  text-align:center;padding:80px 20px;background:var(--card-light);border-radius:var(--radius-lg);
  min-height:340px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;
  box-shadow:var(--shadow-sm);
}
.not-found h2{font-size:1.8rem;color:var(--text-light);font-weight:800;}
.not-found p{color:var(--text-light-muted);max-width:420px;}
.back-list-link{
  display:inline-flex;align-items:center;gap:8px;color:var(--primary-dark);
  font-size:15px;font-weight:600;margin:18px 0 40px;text-decoration:none;transition:color .3s;
}
.back-list-link i{transition:transform .3s;}
.back-list-link:hover{color:var(--primary);}
.back-list-link:hover i{transform:translateX(-4px);}
.related-block{padding-top:36px;border-top:1px solid var(--border-light);}
.related-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.related-header h3{font-size:1.4rem;font-weight:700;color:var(--text-light);}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.related-card{
  display:flex;align-items:center;gap:16px;
  background:var(--card-light);border:1px solid var(--border-light);border-radius:var(--radius-md);
  padding:16px;transition:all .3s ease;text-decoration:none;min-width:0;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(0,196,140,0.35);}
.related-card img{width:120px;height:80px;object-fit:cover;border-radius:8px;flex-shrink:0;}
.related-info{display:flex;flex-direction:column;gap:8px;min-width:0;}
.related-title{
  font-size:14px;font-weight:600;color:var(--text-light);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.related-time{font-size:12px;color:var(--text-light-muted);}
.tag-cloud-sec{background:#fff;padding:52px 0;border-bottom:1px solid var(--border-light);}
.tag-cloud-title{
  font-size:14px;font-weight:700;color:var(--text-light-muted);margin-bottom:22px;
  text-align:center;letter-spacing:0.06em;
}
.tag-cloud{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;}
.tag{
  display:inline-flex;align-items:center;padding:7px 20px;border-radius:999px;
  background:var(--bg-light);border:1px solid var(--border-light);
  color:var(--text-light-muted);font-size:13px;font-weight:500;
  transition:all .3s ease;text-decoration:none;
}
.tag:hover{
  background:rgba(0,196,140,0.1);border-color:var(--primary);
  color:var(--primary-dark);transform:translateY(-2px);
}
.faq-sec{background:var(--bg-light);padding:var(--section-space) 0;}
.faq-sec h2{
  font-size:clamp(1.4rem,2.5vw,1.9rem);text-align:center;margin-bottom:42px;
  color:var(--text-light);font-weight:800;
}
.faq-grid{max-width:840px;margin:0 auto;display:flex;flex-direction:column;gap:16px;}
.faq-item{
  background:var(--card-light);border:1px solid var(--border-light);border-radius:var(--radius-md);
  overflow:hidden;transition:box-shadow .3s ease,border-color .3s ease;
}
.faq-item.open{box-shadow:var(--shadow-md);border-color:rgba(0,196,140,0.35);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 26px;font-size:16px;font-weight:600;color:var(--text-light);
  background:none;border:none;text-align:left;transition:color .3s;
}
.faq-q i{color:var(--primary);transition:transform .3s ease;font-size:14px;flex-shrink:0;}
.faq-item.open .faq-q i{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .35s ease;
  padding:0 26px;color:var(--text-light-muted);font-size:15px;line-height:1.85;
}
.faq-item.open .faq-a{max-height:280px;padding-bottom:24px;}
.cta-sec{
  background:linear-gradient(135deg,#0E1E1A 0%,#0A1620 55%,#12242C 100%);
  position:relative;padding:var(--section-space) 0;text-align:center;overflow:hidden;
}
.cta-sec::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 50% 10%,rgba(0,196,140,0.18) 0%,transparent 55%);
}
.cta-sec .container{position:relative;z-index:1;}
.cta-sec h2{font-size:clamp(1.6rem,3vw,2.3rem);color:#fff;margin-bottom:14px;font-weight:800;}
.cta-sec p{color:var(--text-dark-muted);margin-bottom:34px;font-size:16px;max-width:560px;margin-left:auto;margin-right:auto;}
.cta-note{display:block;margin-top:18px;color:var(--text-dark-dim);font-size:13px;}
.site-footer{background:#0A0E13;padding:80px 0 0;border-top:1px solid rgba(255,255,255,0.08);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1.2fr;gap:48px;margin-bottom:52px;}
.footer-brand p{color:var(--text-dark-muted);font-size:14px;line-height:1.85;margin-top:16px;max-width:380px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:20px;}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul a{color:var(--text-dark-muted);font-size:14px;transition:color .3s,padding-left .3s;}
.footer-col ul a:hover{color:var(--primary);padding-left:6px;}
.footer-contact{display:flex;flex-direction:column;gap:14px;color:var(--text-dark-muted);font-size:14px;}
.footer-contact i{width:20px;color:var(--primary);}
.footer-contact .btn{margin-top:10px;align-self:flex-start;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.08);padding:24px 0;
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
  color:var(--text-dark-dim);font-size:13px;
}
.footer-bottom a{color:var(--text-dark-muted);transition:color .3s;}
.footer-bottom a:hover{color:var(--primary);}
.footer-bottom-links{display:flex;gap:24px;}
@media(max-width:992px){
  .main-nav{
    position:fixed;top:0;right:-320px;width:320px;height:100vh;
    background:var(--bg-dark-elev);flex-direction:column;align-items:stretch;
    padding:88px 28px 32px;gap:10px;transition:right .35s ease;
    box-shadow:var(--shadow-lg);z-index:1100;margin-left:0;
  }
  .main-nav.open{right:0;}
  .main-nav .nav-link{font-size:1.05rem;padding:12px 8px;}
  .nav-overlay{
    display:block;position:fixed;inset:0;background:rgba(0,0,0,0.6);
    z-index:1050;opacity:0;visibility:hidden;transition:opacity .35s ease;
    backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
  }
  .nav-overlay.open{opacity:1;visibility:visible;}
  .hamburger{display:block;}
  .header-actions .btn{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
  .related-grid{grid-template-columns:1fr;}
}
@media(max-width:768px){
  :root{--section-space:48px;}
  .container{padding:0 16px;}
  .article-hero{padding:110px 0 52px;min-height:320px;}
  .article-meta{gap:8px 14px;font-size:13px;}
  .article-content{padding:32px 28px;}
  .article-content h2{font-size:1.25rem;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;text-align:center;}
  .footer-bottom-links{justify-content:center;}
  .related-card img{width:96px;height:64px;}
  .cta-sec .btn-lg{width:100%;min-width:0;}
  .search-box{width:220px;}
}
@media(max-width:576px){
  .container{padding:0 14px;}
  .logo{font-size:1.15rem;}
  .article-content{padding:26px 20px;}
  .breadcrumb .current{max-width:170px;}
  .article-meta span{font-size:12px;}
  .related-card{flex-direction:column;align-items:flex-start;}
  .related-card img{width:100%;height:auto;max-height:110px;}
  .related-title{-webkit-line-clamp:2;}
  .faq-q{padding:18px 20px;font-size:15px;}
  .faq-a{padding:0 20px;}
  .faq-item.open .faq-a{padding-bottom:20px;}
  .tag-cloud{gap:8px;}
  .tag{padding:6px 14px;font-size:12px;}
  .btn-lg{width:100%;}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
        :root {
            --primary: #00C48C;
            --primary-dark: #008A63;
            --accent: #FF6B35;
            --bg-dark: #0D1117;
            --bg-raised: #161B22;
            --bg-card: #1E2630;
            --text-light: #E6EDF3;
            --text-secondary: #99A6B3;
            --text-muted: #6E7B87;
            --border-dark: rgba(255, 255, 255, 0.10);
            --radius-lg: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
            --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.16);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.24);
            --section-space: 80px;
            --container-width: 1200px;
        }

        /* ============ 基础 Reset ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        ul {
            list-style: none;
        }

        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ============ 导航 Header ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            z-index: 1000;
            background: rgba(13, 17, 23, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-dark);
            transition: background .3s ease, box-shadow .3s ease;
        }

        .site-header.scrolled {
            background: rgba(13, 17, 23, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 20px;
        }

        .logo-text {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: 0;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo-text i {
            color: var(--primary);
            font-size: 1.4rem;
        }
        .logo-text:hover { color: var(--primary); }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            margin-left: 24px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            position: relative;
            padding: 6px 2px;
            white-space: nowrap;
            transition: color .25s ease;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: width .3s ease;
        }
        .nav-link:hover {
            color: var(--text-light);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            width: 100%;
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-left: auto;
        }

        .header-right .btn {
            height: 36px;
            line-height: 36px;
            padding: 0 20px;
            font-size: 14px;
            border-radius: 10px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            background: transparent;
            cursor: pointer;
            border-radius: var(--radius-sm);
            padding: 0 10px;
        }
        .nav-toggle span {
            display: block;
            height: 2px;
            width: 22px;
            background: var(--text-light);
            border-radius: 2px;
            transition: transform .3s ease, opacity .3s ease;
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            opacity: 0;
            transition: opacity .3s ease;
        }
        .nav-overlay.show {
            display: block;
            opacity: 1;
        }

        /* ============ 通用按钮 ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: 10px;
            cursor: pointer;
            transition: all .25s ease;
            text-align: center;
            line-height: 1;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #08131A;
            border: 1px solid transparent;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: scale(1.02);
            filter: brightness(1.1);
            box-shadow: 0 0 24px rgba(0, 196, 140, 0.25);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            border: 1px solid transparent;
        }
        .btn-accent:hover {
            background: #e85a2a;
            color: #fff;
            transform: scale(1.02);
            filter: brightness(1.05);
            box-shadow: 0 0 24px rgba(255, 107, 53, 0.25);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-light);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 196, 140, 0.06);
        }
        .btn-lg {
            min-width: 260px;
            height: 52px;
            padding: 0 32px;
            font-size: 17px;
            border-radius: 12px;
        }
        .btn-sm {
            height: 36px;
            padding: 0 18px;
            font-size: 14px;
            border-radius: 10px;
        }
        .btn-block {
            width: 100%;
        }

        /* ============ Banner ============ */
        .page-banner {
            position: relative;
            height: 280px;
            margin-top: 64px;
            overflow: hidden;
            display: flex;
            align-items: center;
        }
        .banner-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center 30%;
            z-index: 0;
        }
        .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(13, 17, 23, 0.94) 35%, rgba(13, 17, 23, 0.7) 65%, rgba(13, 17, 23, 0.55) 100%);
            z-index: 1;
        }
        .banner-content {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .banner-content h1 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .banner-content h1 .highlight {
            color: var(--primary);
        }
        .banner-content p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.7;
        }

        /* ============ 面包屑 ============ */
        .breadcrumb {
            padding: 18px 0 0;
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 500;
        }

        /* ============ 通用 Section ============ */
        .section {
            padding: var(--section-space) 0;
        }

        .section-intro {
            padding: 48px 0 0;
        }

        .section-head {
            margin-bottom: 40px;
            text-align: center;
        }
        .section-head h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .section-head p {
            color: var(--text-secondary);
            font-size: 15px;
            max-width: 640px;
            margin: 0 auto;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 196, 140, 0.12);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }

        /* ============ 导语 + 数据 ============ */
        .intro-wrap {
            display: flex;
            flex-direction: column;
            gap: 40px;
        }
        .intro-text {
            max-width: 860px;
            margin: 0 auto;
            text-align: center;
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.9;
        }
        .intro-text strong {
            color: var(--primary);
            font-weight: 600;
        }

        .stats-row {
            margin-top: 16px;
        }
        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
            height: 100%;
        }
        .stat-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 196, 140, 0.35);
            box-shadow: var(--shadow-lg);
        }
        .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            font-family: 'DIN Alternate', 'Inter', sans-serif;
            line-height: 1.2;
            letter-spacing: -0.01em;
        }
        .stat-num .unit {
            font-size: 1.4rem;
            color: var(--accent);
            margin-left: 2px;
        }
        .stat-label {
            margin-top: 8px;
            color: var(--text-secondary);
            font-size: 14px;
        }

        /* ============ 价值卡片 ============ */
        .value-grid {
            margin-top: 10px;
        }
        .value-card {
            background: var(--bg-raised);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            height: 100%;
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
            position: relative;
            overflow: hidden;
        }
        .value-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 56px;
            background: var(--primary);
            border-radius: 0 3px 3px 0;
            transition: height .3s ease;
        }
        .value-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 196, 140, 0.3);
            box-shadow: var(--shadow-lg);
        }
        .value-card:hover::before {
            height: 100%;
        }
        .value-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(0, 196, 140, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 20px;
            border: 1px solid rgba(0, 196, 140, 0.2);
        }
        .value-card:nth-child(2) .value-icon {
            background: rgba(255, 107, 53, 0.1);
            color: var(--accent);
            border-color: rgba(255, 107, 53, 0.2);
        }
        .value-card:nth-child(3) .value-icon {
            background: rgba(0, 196, 140, 0.08);
        }
        .value-card:nth-child(4) .value-icon {
            background: rgba(255, 107, 53, 0.08);
            color: var(--accent);
            border-color: rgba(255, 107, 53, 0.15);
        }
        .value-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .value-card p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ============ 更新流程 ============ */
        .process-section {
            background: var(--bg-raised);
            border-top: 1px solid var(--border-dark);
            border-bottom: 1px solid var(--border-dark);
        }
        .process-grid {
            margin-top: 20px;
        }
        .process-step {
            text-align: center;
            padding: 24px 16px;
            position: relative;
            height: 100%;
        }
        .process-step::after {
            content: '';
            position: absolute;
            top: 52px;
            right: -18px;
            width: 36px;
            height: 1px;
            background: rgba(0, 196, 140, 0.35);
        }
        .process-step:last-child::after {
            display: none;
        }
        .step-num {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            border-radius: 50%;
            background: rgba(0, 196, 140, 0.1);
            border: 2px solid rgba(0, 196, 140, 0.4);
            color: var(--primary);
            font-size: 1.4rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: 'DIN Alternate', 'Inter', sans-serif;
            box-shadow: 0 0 20px rgba(0, 196, 140, 0.1);
            transition: transform .3s ease, box-shadow .3s ease;
        }
        .process-step:hover .step-num {
            transform: scale(1.08);
            box-shadow: 0 0 30px rgba(0, 196, 140, 0.25);
        }
        .process-step h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 8px;
        }
        .process-step p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
            max-width: 220px;
            margin: 0 auto;
        }

        /* ============ 图文交错 ============ */
        .feature-block {
            display: flex;
            align-items: center;
            gap: 56px;
            margin-bottom: 64px;
        }
        .feature-block:last-child {
            margin-bottom: 0;
        }
        .feature-block.reverse {
            flex-direction: row-reverse;
        }
        .feature-img,
        .feature-text {
            flex: 1;
        }
        .feature-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-dark);
            box-shadow: var(--shadow-lg);
            position: relative;
            aspect-ratio: 16 / 10;
            background: var(--bg-card);
        }
        .feature-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 196, 140, 0.08), transparent 60%);
            pointer-events: none;
        }
        .feature-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .feature-text h3 {
            font-size: clamp(1.2rem, 2.2vw, 1.6rem);
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 14px;
            line-height: 1.4;
        }
        .feature-text p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.85;
            margin-bottom: 16px;
        }
        .feature-list {
            margin-top: 8px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.75;
            padding: 6px 0;
        }
        .feature-list li i {
            color: var(--primary);
            font-size: 15px;
            margin-top: 5px;
            flex-shrink: 0;
        }

        /* ============ FAQ ============ */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-lg);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color .3s ease, box-shadow .3s ease;
        }
        .faq-item:hover {
            border-color: rgba(0, 196, 140, 0.3);
        }
        .faq-item.active {
            border-color: rgba(0, 196, 140, 0.45);
            box-shadow: 0 0 24px rgba(0, 196, 140, 0.08);
        }
        .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            background: transparent;
            cursor: pointer;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-light);
            border-left: 3px solid transparent;
            transition: border-color .3s ease, background .3s ease;
        }
        .faq-item.active .faq-q {
            border-left-color: var(--primary);
            background: rgba(0, 196, 140, 0.03);
        }
        .faq-q .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(0, 196, 140, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            transition: transform .3s ease, background .3s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }
        .faq-a {
            display: none;
            padding: 0 24px 20px 27px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.85;
        }
        .faq-a p {
            margin-bottom: 0;
        }

        /* ============ CTA ============ */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, #0f2b24 0%, #0D1117 50%, #1a1d2e 100%);
            position: relative;
            overflow: hidden;
            border-top: 1px solid var(--border-dark);
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(0, 196, 140, 0.08);
            filter: blur(60px);
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 14px;
        }
        .cta-inner p {
            color: var(--text-secondary);
            font-size: 16px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .cta-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-note {
            margin-top: 18px;
            color: var(--text-muted);
            font-size: 13px;
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: #0A0E13;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 40px;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
            margin-top: 14px;
            max-width: 420px;
        }
        .footer-col h4 {
            color: var(--text-light);
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 32px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            color: var(--text-secondary);
            font-size: 14px;
            transition: color .25s ease, padding-left .25s ease;
        }
        .footer-col ul a:hover {
            color: var(--primary);
            padding-left: 6px;
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .footer-contact span {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-contact i {
            color: var(--primary);
            width: 16px;
            text-align: center;
        }
        .footer-contact .btn {
            margin-top: 12px;
            align-self: flex-start;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-copy {
            color: var(--text-muted);
            font-size: 13px;
        }
        .footer-bottom-links {
            display: flex;
            gap: 20px;
        }
        .footer-bottom-links a {
            color: var(--text-muted);
            font-size: 13px;
            transition: color .25s ease;
        }
        .footer-bottom-links a:hover {
            color: var(--primary);
        }

        /* ============ 响应式 ============ */
        @media (max-width: 992px) {
            :root {
                --section-space: 56px;
            }
            .main-nav {
                position: fixed;
                top: 64px;
                right: 0;
                bottom: 0;
                width: 280px;
                background: var(--bg-raised);
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 32px 24px;
                transform: translateX(100%);
                transition: transform .35s ease;
                z-index: 1001;
                box-shadow: -12px 0 32px rgba(0, 0, 0, 0.4);
                margin-left: 0;
            }
            .main-nav.open {
                transform: translateX(0);
            }
            .nav-link {
                width: 100%;
                padding: 14px 0;
                font-size: 16px;
                border-bottom: 1px solid var(--border-dark);
            }
            .nav-link::after {
                display: none;
            }
            .nav-link.active {
                color: var(--primary);
            }
            .nav-toggle {
                display: flex;
            }
            .feature-block,
            .feature-block.reverse {
                flex-direction: column;
                gap: 32px;
            }
            .feature-img {
                width: 100%;
            }
            .process-step::after {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .grid-margin-x>.cell {
                margin-bottom: 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .container {
                padding: 0 16px;
            }
            .banner-content h1 {
                font-size: 1.6rem;
            }
            .banner-content p {
                font-size: 14px;
            }
            .stat-card {
                padding: 20px 14px;
            }
            .stat-num {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .btn-lg {
                min-width: 220px;
                height: 48px;
                font-size: 16px;
            }
            .cta-btns {
                flex-direction: column;
                align-items: center;
            }
            .cta-btns .btn {
                width: 100%;
                max-width: 320px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-space: 44px;
            }
            .logo-text {
                font-size: 1.05rem;
            }
            .header-right .btn {
                padding: 0 14px;
                font-size: 13px;
            }
            .page-banner {
                height: 230px;
            }
            .banner-content h1 {
                font-size: 1.35rem;
            }
            .banner-content p {
                font-size: 13px;
            }
            .value-card {
                padding: 24px 18px;
            }
            .feature-list li {
                font-size: 14px;
            }
            .faq-q {
                font-size: 14px;
                padding: 16px 18px;
            }
            .faq-a {
                padding: 0 18px 16px 21px;
                font-size: 14px;
            }
        }

/* roulang page: category3 */
/* ===== Design Tokens ===== */
:root {
  --primary: #00C48C;
  --primary-dark: #008A63;
  --accent: #FF6B35;
  --bg-dark: #0D1117;
  --bg-elev: #161B22;
  --bg-card: #1E2630;
  --text-light: #E6EDF3;
  --text-secondary: #99A6B3;
  --text-muted: #6E7B87;
  --border-dark: rgba(255,255,255,0.10);
  --radius-lg: 12px;
  --radius-md: 8px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
  --shadow-md: 0 6px 16px rgba(0,0,0,0.16);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.24);
  --section-space: 80px;
  --header-height: 64px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-dark);
  color: var(--text-light);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease; }
a:hover { color: var(--primary-dark); }
ul { list-style: none; }
button { cursor: pointer; font-family: inherit; }
input { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: var(--section-space) 0; }
.section-head { text-align: center; margin-bottom: 48px; }
.section-head h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 700; color: var(--text-light); margin-bottom: 12px; letter-spacing: -0.01em; }
.section-head p { color: var(--text-secondary); font-size: 1rem; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: none; border-radius: 10px; font-size: 0.9375rem; font-weight: 600;
  padding: 10px 20px; transition: all 0.3s ease; text-decoration: none; line-height: 1.5;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff !important; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--primary-dark); transform: scale(1.02); filter: brightness(1.1); }
.btn-accent {
  background: var(--accent); color: #fff !important; min-width: 260px; height: 54px;
  border-radius: 12px; font-size: 1.0625rem; font-weight: 700;
  box-shadow: 0 8px 24px rgba(255,107,53,0.25);
}
.btn-accent:hover { filter: brightness(1.08); transform: scale(1.02); box-shadow: 0 12px 32px rgba(255,107,53,0.35); }
.btn-outline { background: transparent; border: 1px solid rgba(255,255,255,0.2); color: var(--text-light) !important; }
.btn-outline:hover { border-color: var(--primary); color: var(--primary) !important; background: rgba(0,196,140,0.08); }
.btn-sm { padding: 8px 16px; font-size: 0.875rem; }
.btn-lg { padding: 14px 28px; font-size: 1.0625rem; }

/* ===== Header & Nav ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--header-height); background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled {
  background: rgba(13,17,23,0.82);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 24px rgba(0,0,0,0.2);
  border-bottom: 1px solid var(--border-dark);
}
.header-inner {
  height: var(--header-height); display: flex; align-items: center;
  justify-content: space-between; gap: 24px;
}
.logo-text {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.25rem; font-weight: 700; color: var(--text-light) !important;
  text-decoration: none; white-space: nowrap; letter-spacing: 0;
}
.logo-icon {
  width: 36px; height: 36px; border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1rem; box-shadow: 0 0 20px rgba(0,196,140,0.3);
}
.main-nav { display: flex; align-items: center; gap: 28px; }
.nav-link {
  font-size: 15px; font-weight: 500; color: var(--text-secondary);
  padding: 6px 2px; position: relative; transition: color 0.25s ease;
}
.nav-link::after {
  content: ''; position: absolute; left: 0; bottom: -2px; width: 0;
  height: 2px; background: var(--primary); transition: width 0.3s ease;
}
.nav-link:hover { color: var(--text-light); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--primary); }
.nav-link.active::after { width: 100%; }
.header-actions { display: flex; align-items: center; gap: 14px; }
.search-wrap { position: relative; display: flex; align-items: center; }
.search-toggle {
  background: none; border: none; color: var(--text-secondary); font-size: 1.1rem;
  width: 40px; height: 40px; border-radius: 50%;
  transition: background 0.25s, color 0.25s;
}
.search-toggle:hover { color: var(--primary); background: rgba(255,255,255,0.06); }
.search-input {
  width: 0; padding: 0; border: 1px solid transparent; border-radius: 8px;
  background: rgba(255,255,255,0.06); color: var(--text-light); font-size: 0.875rem;
  outline: none; transition: width 0.3s ease, padding 0.3s ease, border-color 0.3s ease; height: 36px;
}
.search-wrap.open .search-input { width: 220px; padding: 0 12px; border-color: var(--primary); }
.nav-toggle {
  display: none; background: none; border: none; color: var(--text-light);
  font-size: 1.4rem; width: 44px; height: 44px; border-radius: 8px;
}
.nav-toggle:hover { background: rgba(255,255,255,0.06); }
.nav-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.55); z-index: 999;
  opacity: 0; visibility: hidden; transition: opacity 0.3s ease;
}
.nav-overlay.active { opacity: 1; visibility: visible; }

/* ===== Page Banner ===== */
main { padding-top: var(--header-height); }
.page-banner {
  position: relative; height: 280px; background-size: cover; background-position: center;
  display: flex; align-items: center; justify-content: center; text-align: center;
}
.banner-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(13,17,23,0.55) 0%, rgba(13,17,23,0.4) 50%, rgba(13,17,23,0.7) 100%);
}
.banner-content { position: relative; z-index: 2; padding: 24px; }
.banner-content h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 700;
  color: #fff; margin-bottom: 10px; text-shadow: 0 2px 12px rgba(0,0,0,0.4);
}
.banner-content p {
  color: rgba(255,255,255,0.88); font-size: 1rem; max-width: 640px; margin: 0 auto;
}

/* ===== Intro Section ===== */
.intro-section { background: var(--bg-dark); }
.intro-wrap { max-width: 900px; margin: 0 auto; text-align: center; }
.intro-wrap h2 {
  font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 700; margin-bottom: 20px;
  color: var(--text-light);
}
.intro-wrap p { color: var(--text-secondary); font-size: 1rem; line-height: 1.9; }
.intro-badges { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 24px; }
.intro-badges .badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(0,196,140,0.12); border: 1px solid rgba(0,196,140,0.25);
  color: var(--primary); font-size: 0.8125rem; font-weight: 500;
  padding: 6px 14px; border-radius: 999px;
}

/* ===== Guide Types ===== */
.guide-types-section { background: var(--bg-elev); border-top: 1px solid var(--border-dark); border-bottom: 1px solid var(--border-dark); }
.guide-card {
  background: var(--bg-card); border: 1px solid var(--border-dark); border-radius: var(--radius-lg);
  padding: 28px; height: 100%; transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.guide-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(0,196,140,0.3); }
.card-icon {
  width: 52px; height: 52px; border-radius: 12px; background: rgba(0,196,140,0.12);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary); font-size: 1.3rem; margin-bottom: 18px;
}
.guide-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; color: var(--text-light); }
.guide-card p { color: var(--text-secondary); font-size: 0.9375rem; margin-bottom: 18px; }
.card-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  display: inline-block; background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08); color: var(--text-secondary);
  font-size: 0.75rem; font-weight: 500; padding: 4px 10px; border-radius: 999px;
}
.tag-hot { background: rgba(0,196,140,0.12); border-color: rgba(0,196,140,0.2); color: var(--primary); }

/* ===== Review Section ===== */
.review-section { background: var(--bg-dark); }
.review-block {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
  align-items: center; margin-bottom: 56px;
}
.review-block:last-child { margin-bottom: 0; }
.review-block.reverse .review-content { order: -1; }
.review-media { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.review-media img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; transition: transform 0.4s ease; }
.review-media:hover img { transform: scale(1.03); }
.review-content h3 {
  font-size: 1.4rem; font-weight: 700; margin-bottom: 16px; color: var(--text-light);
}
.review-content ul { margin-bottom: 16px; }
.review-content li {
  display: flex; align-items: flex-start; gap: 8px;
  color: var(--text-secondary); font-size: 0.9375rem; margin-bottom: 8px;
}
.review-content li i.fa-check { color: var(--primary); margin-top: 6px; font-size: 0.8125rem; }
.review-content p { color: var(--text-muted); font-size: 0.9375rem; }

/* ===== Community ===== */
.community-section { background: var(--bg-elev); border-top: 1px solid var(--border-dark); border-bottom: 1px solid var(--border-dark); }
.community-card {
  background: var(--bg-card); border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border-dark); height: 100%;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.community-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.community-img { overflow: hidden; max-height: 200px; }
.community-img img { width: 100%; aspect-ratio: 16 / 8; object-fit: cover; }
.community-body { padding: 24px; }
.user-info { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(135deg, rgba(0,196,140,0.3), rgba(0,196,140,0.1));
  display: flex; align-items: center; justify-content: center;
  color: var(--primary); font-size: 1rem;
}
.user-name { font-size: 0.9375rem; font-weight: 600; color: var(--text-light); }
.stars { color: var(--accent); font-size: 0.875rem; letter-spacing: 2px; }
.community-body p { color: var(--text-secondary); font-size: 0.9375rem; line-height: 1.85; }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-dark); }
.faq-layout { display: grid; grid-template-columns: 0.9fr 1.4fr; gap: 48px; align-items: start; }
.faq-intro h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; margin-bottom: 16px; color: var(--text-light); }
.faq-intro p { color: var(--text-secondary); margin-bottom: 20px; }
.faq-intro .faq-contact { font-size: 0.875rem; color: var(--text-muted); }
.faq-list { width: 100%; }
.faq-item {
  border: 1px solid var(--border-dark); border-radius: var(--radius-md);
  background: var(--bg-card); margin-bottom: 14px; overflow: hidden;
  transition: border-color 0.3s ease;
}
.faq-item.open { border-color: rgba(0,196,140,0.4); }
.faq-question {
  width: 100%; background: none; border: none; color: var(--text-light);
  font-size: 1rem; font-weight: 600; padding: 16px 44px 16px 18px;
  text-align: left; position: relative; display: flex; align-items: center; gap: 12px;
}
.faq-question::before {
  content: ''; width: 3px; height: 20px; background: var(--primary);
  border-radius: 2px; opacity: 0; transition: opacity 0.3s ease;
}
.faq-item.open .faq-question::before { opacity: 1; }
.faq-icon {
  position: absolute; right: 16px; top: 50%; transform: translateY(-50%);
  font-size: 0.8125rem; color: var(--text-secondary);
  transition: transform 0.3s ease, color 0.3s ease;
}
.faq-item.open .faq-icon { transform: translateY(-50%) rotate(180deg); color: var(--primary); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; padding: 0 18px 0 33px; }
.faq-item.open .faq-answer { max-height: 220px; padding-bottom: 16px; }
.faq-answer p { color: var(--text-secondary); font-size: 0.9375rem; line-height: 1.8; }

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, #0A0E13 0%, #16212B 50%, #1A2F28 100%);
  border-top: 1px solid var(--border-dark); border-bottom: 1px solid var(--border-dark);
}
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }
.cta-inner h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; margin-bottom: 12px; color: var(--text-light); }
.cta-inner p { color: var(--text-secondary); margin-bottom: 28px; font-size: 1.0625rem; }
.cta-note { display: block; margin-top: 18px; color: var(--text-muted); font-size: 0.875rem; }
.cta-note i { color: var(--primary); margin-right: 4px; }

/* ===== Tag Cloud & Back ===== */
.tag-cloud-section { background: var(--bg-dark); }
.tag-cloud {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 10px; margin-bottom: 36px;
}
.tag-cloud-label { color: var(--text-muted); font-size: 0.875rem; margin-right: 4px; }
.tag-cloud .tag {
  background: var(--bg-card); border: 1px solid var(--border-dark);
  color: var(--text-secondary); font-size: 0.8125rem; padding: 6px 12px;
  transition: all 0.25s ease; cursor: default;
}
.tag-cloud .tag:hover { border-color: var(--primary); color: var(--primary); background: rgba(0,196,140,0.08); }
.back-home { text-align: center; }

/* ===== Footer ===== */
.site-footer {
  background: #0A0E13; border-top: 1px solid rgba(255,255,255,0.08);
  padding: 56px 0 0; color: var(--text-secondary);
}
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 48px;
  padding-bottom: 40px;
}
.footer-brand .logo-text { font-size: 1.2rem; margin-bottom: 12px; display: inline-flex; }
.footer-brand p { font-size: 0.875rem; color: var(--text-muted); max-width: 380px; line-height: 1.85; }
.footer-col h4 {
  font-size: 1rem; font-weight: 700; color: var(--text-light);
  margin-bottom: 16px;
}
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul a {
  color: var(--text-secondary); font-size: 0.875rem; transition: color 0.25s;
}
.footer-col ul a:hover { color: var(--primary); }
.footer-contact span {
  display: flex; align-items: center; gap: 10px; font-size: 0.875rem;
  color: var(--text-secondary); margin-bottom: 8px;
}
.footer-contact span i { color: var(--primary); width: 16px; text-align: center; }
.footer-contact .btn { margin-top: 12px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08); padding: 20px 0;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
}
.footer-copy { font-size: 0.8125rem; color: var(--text-muted); }
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { font-size: 0.8125rem; color: var(--text-muted); transition: color 0.25s; }
.footer-bottom-links a:hover { color: var(--primary); }

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .main-nav {
    position: fixed; top: 0; right: -300px; width: 280px; height: 100vh;
    background: var(--bg-elev); padding: 84px 24px 24px;
    flex-direction: column; align-items: flex-start; gap: 4px;
    transition: right 0.3s ease; box-shadow: var(--shadow-lg); z-index: 1001;
    border-left: 1px solid var(--border-dark);
  }
  .main-nav.open { right: 0; }
  .nav-link { width: 100%; padding: 12px 8px; font-size: 1rem; }
  .nav-toggle { display: block; }
  .nav-overlay.active { opacity: 1; visibility: visible; }
  .review-block { grid-template-columns: 1fr; gap: 24px; }
  .review-block.reverse .review-content { order: 0; }
  .faq-layout { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  :root { --section-space: 48px; }
  .container { padding: 0 16px; }
  .page-banner { height: 240px; }
  .banner-content h1 { font-size: clamp(1.5rem, 5vw, 2rem); }
  .header-cta { display: none; }
  .search-wrap.open .search-input { width: 160px; }
  .guide-cards .cell { margin-bottom: 16px; }
  .community-grid .cell { margin-bottom: 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-bottom-links { justify-content: center; }
  .btn-accent { min-width: 220px; height: 50px; font-size: 1rem; }
}
@media (max-width: 576px) {
  .intro-badges { gap: 8px; }
  .logo-text { font-size: 1.05rem; }
  .logo-icon { width: 32px; height: 32px; font-size: 0.875rem; }
  .search-wrap.open .search-input { width: 120px; }
  .review-block { gap: 16px; }
  .review-content h3 { font-size: 1.2rem; }
  .community-img img { aspect-ratio: 16 / 9; }
  .faq-question { font-size: 0.9375rem; padding: 14px 42px 14px 14px; }
}

/* ===== Accessibility ===== */
a:focus-visible, button:focus-visible, input:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--primary); outline-offset: 2px;
}
.btn:active { transform: scale(0.98); }
.nav-link:active { color: var(--primary-dark); }

/* ===== Custom Scrollbar ===== */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.18); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.28); }