/* roulang page: index */
:root{--p:#00e5ff;--p2:#00b8d9;--s:#8b5cf6;--a:#ff3c8e;--bg:#0a0e17;--bg2:#0f1524;--card:#111827;--card2:#1a2332;--txt:#e5e7eb;--weak:#9ca3af;--line:rgba(255,255,255,.08);--r:20px;--r2:14px;--r3:8px;--sh:0 8px 40px rgba(0,0,0,.45);--sh2:0 16px 50px rgba(0,229,255,.12);--sp:80px;--sp2:48px;--f:'Segoe UI','PingFang SC','Microsoft YaHei',system-ui,sans-serif}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--f);background:var(--bg);color:var(--txt);line-height:1.7;overflow-x:hidden}
a{color:var(--p);text-decoration:none;transition:all .3s ease}
a:hover{color:var(--p2)}
img{max-width:100%;height:auto;display:block}
button,input{font-family:inherit}
.container{max-width:1200px;padding:0 24px;margin:0 auto}
.site-header{position:sticky;top:0;z-index:999;background:rgba(10,14,23,.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.navbar{padding:14px 0}
.navbar-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;color:var(--txt)}
.navbar-brand:hover{color:var(--p)}
.brand-icon{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--p),var(--s));display:flex;align-items:center;justify-content:center;font-size:1.2rem;color:#fff;box-shadow:0 4px 20px rgba(0,229,255,.3)}
.navbar-nav{gap:4px}
.nav-link{font-weight:600;color:var(--weak);padding:8px 16px;border-radius:10px;font-size:.95rem}
.nav-link:hover{color:var(--p);background:rgba(0,229,255,.06)}
.nav-link.active{color:var(--p);background:rgba(0,229,255,.1)}
.header-actions{display:flex;align-items:center;gap:10px}
.search-form{display:flex;align-items:center;background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:6px 12px;transition:border .3s}
.search-form:focus-within{border-color:var(--p)}
.search-form input{background:transparent;border:none;outline:none;color:var(--txt);font-size:.9rem;width:130px}
.search-form button{background:transparent;border:none;color:var(--weak);cursor:pointer}
.btn{border-radius:12px;font-weight:600;padding:8px 20px;font-size:.95rem;border:none;transition:all .3s}
.btn-primary{background:linear-gradient(135deg,var(--p),var(--p2));color:#062a30}
.btn-primary:hover{background:linear-gradient(135deg,var(--p2),var(--p));transform:translateY(-2px);box-shadow:0 8px 30px rgba(0,229,255,.25);color:#062a30}
.btn-outline{background:transparent;border:1px solid var(--line);color:var(--txt)}
.btn-outline:hover{border-color:var(--p);color:var(--p);background:rgba(0,229,255,.05)}
.hero{position:relative;padding:120px 0 100px;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,14,23,.7) 0%,rgba(10,14,23,.9) 80%)}
.hero .container{position:relative;z-index:2}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(0,229,255,.12);border:1px solid rgba(0,229,255,.3);color:var(--p);padding:6px 16px;border-radius:50px;font-size:.85rem;font-weight:600;margin-bottom:20px}
.hero h1{font-size:3rem;font-weight:800;line-height:1.2;margin-bottom:16px;color:#fff}
.hero h1 span{background:linear-gradient(90deg,var(--p),var(--s));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero p{font-size:1.1rem;color:var(--weak);max-width:640px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:32px;margin-top:48px;flex-wrap:wrap}
.hero-stats .stat-item{display:flex;flex-direction:column}
.hero-stats .stat-num{font-size:1.8rem;font-weight:800;color:var(--p)}
.hero-stats .stat-label{font-size:.85rem;color:var(--weak)}
.section{padding:var(--sp) 0}
.section-sm{padding:var(--sp2) 0}
.section-head{text-align:center;margin-bottom:48px}
.section-head .eyebrow{display:inline-block;background:rgba(139,92,246,.12);border:1px solid rgba(139,92,246,.25);color:var(--s);padding:4px 14px;border-radius:50px;font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:1px;margin-bottom:12px}
.section-head h2{font-size:2rem;font-weight:800;margin-bottom:8px;color:#fff}
.section-head p{color:var(--weak);max-width:600px;margin:0 auto}
.about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.about-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:32px;text-align:center;transition:all .4s}
.about-card:hover{transform:translateY(-6px);box-shadow:var(--sh);border-color:rgba(0,229,255,.2)}
.about-icon{width:60px;height:60px;border-radius:16px;background:linear-gradient(135deg,rgba(0,229,255,.15),rgba(139,92,246,.15));display:flex;align-items:center;justify-content:center;font-size:1.5rem;color:var(--p);margin:0 auto 18px}
.about-card h3{font-size:1.1rem;font-weight:700;margin-bottom:8px;color:#fff}
.about-card p{font-size:.9rem;color:var(--weak)}
.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.feature-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:all .4s;position:relative}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh)}
.feature-img{height:180px;overflow:hidden}
.feature-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.feature-card:hover .feature-img img{transform:scale(1.05)}
.feature-body{padding:28px}
.feature-body h3{font-size:1.2rem;font-weight:700;margin-bottom:10px;color:#fff}
.feature-body p{color:var(--weak);font-size:.95rem;margin-bottom:16px}
.feature-tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{display:inline-block;background:rgba(0,229,255,.08);border:1px solid rgba(0,229,255,.2);color:var(--p);padding:3px 10px;border-radius:20px;font-size:.75rem;font-weight:600}
.category-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.category-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:32px;display:flex;gap:20px;align-items:center;transition:all .4s}
.category-card:hover{transform:translateY(-4px);box-shadow:var(--sh);border-color:rgba(0,229,255,.2)}
.category-icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,var(--p),var(--s));display:flex;align-items:center;justify-content:center;font-size:1.4rem;color:#fff;flex-shrink:0}
.category-text h3{font-size:1.1rem;font-weight:700;color:#fff;margin-bottom:6px}
.category-text p{color:var(--weak);font-size:.9rem;margin:0}
.category-arrow{margin-left:auto;color:var(--weak);font-size:1.2rem;transition:all .3s}
.category-card:hover .category-arrow{color:var(--p);transform:translateX(4px)}
.news-list .news-item{display:flex;align-items:center;gap:16px;background:var(--card);border:1px solid var(--line);border-radius:var(--r2);padding:20px 24px;margin-bottom:14px;transition:all .3s}
.news-list .news-item:hover{border-color:rgba(0,229,255,.25);transform:translateX(4px);background:var(--card2)}
.news-item .news-icon{color:var(--p);font-size:1.2rem;flex-shrink:0}
.news-item .news-content{flex:1;min-width:0}
.news-item .news-title{font-weight:600;color:#fff;margin-bottom:4px;font-size:1rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.news-item .news-meta{display:flex;gap:14px;color:var(--weak);font-size:.8rem}
.news-item .news-cat{color:var(--s)}
.news-item .news-time{color:var(--weak)}
.news-item .news-arrow{color:var(--weak);transition:all .3s}
.news-item:hover .news-arrow{color:var(--p);transform:translateX(4px)}
.news-empty{text-align:center;padding:60px;color:var(--weak);background:var(--card);border:1px dashed var(--line);border-radius:var(--r)}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.process-item{position:relative;background:var(--bg2);border:1px solid var(--line);border-radius:var(--r);padding:28px 24px;text-align:center;transition:all .3s}
.process-item:hover{transform:translateY(-4px);border-color:rgba(0,229,255,.25)}
.process-item::before{counter-increment:step;content:counter(step);position:absolute;top:-14px;left:50%;transform:translateX(-50%);width:28px;height:28px;background:linear-gradient(135deg,var(--p),var(--s));border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.8rem;color:#fff;box-shadow:0 4px 16px rgba(0,229,255,.3)}
.process-icon{font-size:1.8rem;color:var(--p);margin-bottom:12px}
.process-item h4{font-size:1rem;font-weight:700;margin-bottom:8px;color:#fff}
.process-item p{font-size:.85rem;color:var(--weak);margin:0}
.stats-panel{background:linear-gradient(135deg,var(--bg2),var(--card));border:1px solid var(--line);border-radius:calc(var(--r) + 4px);padding:48px;text-align:center}
.stats-panel .row{gap:24px 0}
.stats-panel .stat-box{padding:24px}
.stat-box .stat-num{font-size:2.2rem;font-weight:800;background:linear-gradient(90deg,var(--p),var(--s));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.stat-box .stat-label{color:var(--weak);font-size:.9rem;margin-top:4px}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r2);margin-bottom:12px;overflow:hidden;transition:border .3s}
.faq-item:hover{border-color:rgba(0,229,255,.2)}
.faq-item summary{list-style:none;cursor:pointer;padding:20px 24px;font-weight:600;display:flex;align-items:center;gap:12px;color:#fff}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'+';margin-left:auto;font-size:1.3rem;color:var(--p);transition:transform .3s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-body{padding:0 24px 20px;color:var(--weak);font-size:.95rem;border-top:1px solid var(--line);padding-top:14px}
.cta-section{background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;position:relative;padding:80px 0;text-align:center}
.cta-section::before{content:'';position:absolute;inset:0;background:rgba(10,14,23,.88)}
.cta-section .container{position:relative;z-index:2}
.cta-section h2{font-size:2rem;font-weight:800;color:#fff;margin-bottom:12px}
.cta-section p{color:var(--weak);font-size:1.05rem;max-width:600px;margin:0 auto 28px}
.site-footer{background:var(--bg2);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
.footer-logo{font-size:1.15rem;font-weight:800;color:#fff;margin-bottom:12px;display:inline-block}
.footer-brand p{color:var(--weak);font-size:.9rem;max-width:300px}
.footer-links h4{font-size:.95rem;font-weight:700;color:#fff;margin-bottom:16px}
.footer-links ul{list-style:none;padding:0}
.footer-links li{margin-bottom:10px}
.footer-links a{color:var(--weak);font-size:.9rem}
.footer-links a:hover{color:var(--p)}
.footer-contact h4{font-size:.95rem;font-weight:700;color:#fff;margin-bottom:16px}
.footer-contact p{color:var(--weak);font-size:.9rem;margin-bottom:6px}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0;text-align:center;color:var(--weak);font-size:.85rem}
.footer-bottom a{color:var(--p)}
@media(max-width:1024px){.about-grid{grid-template-columns:1fr 1fr}.feature-grid{grid-template-columns:1fr}.category-cards{grid-template-columns:1fr}.process-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.hero h1{font-size:2.4rem}}
@media(max-width:768px){.navbar-nav{margin-top:12px}.header-actions{flex-wrap:wrap;margin-top:12px}.search-form{width:100%}.search-form input{flex:1}.about-grid{grid-template-columns:1fr}.process-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.hero{padding:80px 0 60px}.hero h1{font-size:1.9rem}.section{padding:56px 0}.hero-stats{gap:20px}}
@media(max-width:520px){.hero h1{font-size:1.6rem}.hero p{font-size:1rem}.btn{padding:8px 14px}.container{padding:0 16px}.news-item{flex-direction:column;align-items:flex-start}.news-item .news-title{white-space:normal}}

/* roulang page: category1 */
:root {
  --primary: #00d4ff;
  --primary-rgb: 0, 212, 255;
  --primary-dark: #009dbe;
  --accent: #ff6b35;
  --accent-rgb: 255, 107, 53;
  --bg-deep: #070d18;
  --bg-dark: #0b1524;
  --bg-section: #101c30;
  --bg-card: #152238;
  --bg-card-hover: #1a2b45;
  --text-light: #e8f1ff;
  --text-body: #c2d2e6;
  --text-muted: #7e92aa;
  --border-color: rgba(0, 212, 255, 0.14);
  --border-glow: rgba(0, 212, 255, 0.35);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-card: 0 10px 35px rgba(0, 0, 0, 0.38);
  --shadow-glow: 0 0 24px rgba(0, 212, 255, 0.12);
  --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #0076ff 100%);
  --gradient-accent: linear-gradient(135deg, #ff6b35 0%, #ff9a5e 100%);
  --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --spacing-section: 90px;
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--bg-dark);
  color: var(--text-body);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; }
ul, ol { list-style: none; }
button, input { font-family: inherit; }
.container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }

.section { padding: var(--spacing-section) 0; position: relative; }
.section-alt { background: var(--bg-section); }

.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-tag {
  display: inline-block;
  padding: 5px 16px;
  background: rgba(var(--primary-rgb), 0.08);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-title { font-size: 34px; font-weight: 700; color: var(--text-light); line-height: 1.3; margin-bottom: 14px; }
.section-sub { color: var(--text-muted); font-size: 16px; line-height: 1.8; }

.btn { border-radius: 50px; padding: 10px 24px; font-weight: 600; font-size: 15px; transition: var(--transition); border-width: 1px; }
.btn-outline { border-color: rgba(var(--primary-rgb), 0.45); color: var(--primary); background: transparent; }
.btn-outline:hover { background: rgba(var(--primary-rgb), 0.12); color: var(--primary); border-color: var(--primary); transform: translateY(-2px); }
.btn-primary-gradient {
  background: var(--gradient-primary);
  border: none;
  color: #fff;
  box-shadow: 0 6px 20px rgba(var(--primary-rgb), 0.35);
}
.btn-primary-gradient:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 10px 28px rgba(var(--primary-rgb), 0.45); }
.btn-accent {
  background: var(--gradient-accent);
  border: none;
  color: #fff;
  box-shadow: 0 6px 20px rgba(var(--accent-rgb), 0.3);
}
.btn-accent:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 10px 26px rgba(var(--accent-rgb), 0.4); }
.btn:focus { box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.25); outline: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 1050;
  background: rgba(11, 21, 36, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 0;
}
.site-header .container { max-width: 1280px; }
.site-header .navbar { padding: 0; min-height: 72px; }
.navbar-brand {
  display: flex;
  align-items: center;
  font-size: 19px;
  font-weight: 700;
  color: #fff;
  gap: 10px;
  padding: 0;
  margin: 0;
  white-space: nowrap;
}
.navbar-brand:hover { color: var(--primary); }
.brand-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: 10px;
  color: #fff;
  font-size: 16px;
  box-shadow: 0 4px 16px rgba(var(--primary-rgb), 0.35);
}
.navbar-nav { gap: 6px; }
.nav-link {
  color: var(--text-body) !important;
  padding: 8px 16px !important;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}
.nav-link:hover { color: var(--primary) !important; background: rgba(var(--primary-rgb), 0.08); }
.nav-link.active { color: var(--primary) !important; background: rgba(var(--primary-rgb), 0.1); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.search-form { display: flex; align-items: center; background: rgba(255, 255, 255, 0.05); border: 1px solid rgba(255, 255, 255, 0.08); border-radius: 50px; padding: 4px 6px 4px 16px; transition: var(--transition); }
.search-form:focus-within { border-color: var(--border-glow); background: rgba(var(--primary-rgb), 0.06); }
.search-form input { background: transparent; border: none; outline: none; color: var(--text-light); font-size: 13px; width: 130px; transition: var(--transition); }
.search-form input::placeholder { color: var(--text-muted); }
.search-form button { background: transparent; border: none; color: var(--text-muted); width: 34px; height: 34px; border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: var(--transition); }
.search-form button:hover { background: var(--primary); color: #fff; }
.navbar-toggler { border: 1px solid rgba(255, 255, 255, 0.15); border-radius: 8px; padding: 6px 10px; }
.navbar-toggler:focus { box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.25); }
.navbar-toggler-icon { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%23c2d2e6' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E"); }

.page-banner {
  position: relative;
  padding: 110px 0 100px;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(7, 13, 24, 0.95) 0%, rgba(7, 13, 24, 0.75) 55%, rgba(7, 13, 24, 0.35) 100%);
  z-index: 1;
}
.page-banner .container { position: relative; z-index: 2; }
.breadcrumb { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-muted); background: rgba(255, 255, 255, 0.06); padding: 8px 18px; border-radius: 50px; margin-bottom: 20px; border: 1px solid rgba(255, 255, 255, 0.08); }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: rgba(255, 255, 255, 0.35); font-size: 12px; }
.breadcrumb .current { color: var(--primary); }
.page-banner h1 { font-size: 44px; font-weight: 800; color: #fff; line-height: 1.25; margin-bottom: 18px; }
.page-banner h1 span { color: var(--primary); }
.page-banner p { font-size: 17px; color: var(--text-body); max-width: 620px; line-height: 1.9; }

.overview-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.overview-image { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-card); }
.overview-image img { width: 100%; display: block; }
.overview-image::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 50%, rgba(7, 13, 24, 0.6) 100%); }
.overview-content .section-title { text-align: left; margin-bottom: 18px; }
.overview-content .section-sub { text-align: left; font-size: 15.5px; }
.overview-list { margin-top: 22px; }
.overview-list li { display: flex; align-items: flex-start; gap: 12px; padding: 10px 0; color: var(--text-body); }
.overview-list li i { color: var(--primary); font-size: 16px; margin-top: 4px; }
.overview-stat { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 30px; }
.stat-item { text-align: center; background: rgba(255, 255, 255, 0.04); border: 1px solid rgba(255, 255, 255, 0.07); border-radius: var(--radius-md); padding: 16px 10px; }
.stat-item .num { font-size: 28px; font-weight: 800; color: var(--primary); display: block; line-height: 1.2; }
.stat-item .label { font-size: 13px; color: var(--text-muted); }

.methods-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.method-card { background: var(--bg-card); border: 1px solid rgba(255, 255, 255, 0.07); border-radius: var(--radius-lg); padding: 32px 26px; position: relative; overflow: hidden; transition: var(--transition); }
.method-card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 3px; background: var(--gradient-primary); opacity: 0; transition: var(--transition); }
.method-card:hover { transform: translateY(-8px); background: var(--bg-card-hover); box-shadow: var(--shadow-card); border-color: var(--border-color); }
.method-card:hover::before { opacity: 1; }
.method-icon { width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center; background: rgba(var(--primary-rgb), 0.12); color: var(--primary); font-size: 22px; margin-bottom: 18px; transition: var(--transition); }
.method-card:hover .method-icon { background: var(--gradient-primary); color: #fff; box-shadow: 0 6px 18px rgba(var(--primary-rgb), 0.35); }
.method-card h3 { font-size: 18px; font-weight: 700; color: var(--text-light); margin-bottom: 10px; }
.method-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.method-card .method-meta { font-size: 12px; color: var(--text-muted); border-top: 1px solid rgba(255, 255, 255, 0.07); padding-top: 12px; display: flex; justify-content: space-between; align-items: center; }
.method-card .method-meta i { color: var(--primary); font-size: 12px; }

.step-section { background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat; position: relative; }
.step-section::before { content: ''; position: absolute; inset: 0; background: rgba(11, 21, 36, 0.92); }
.step-section .container { position: relative; z-index: 2; }
.steps-wrap { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; position: relative; }
.steps-wrap::before { content: ''; position: absolute; top: 40px; left: 10%; right: 10%; height: 2px; background: linear-gradient(90deg, transparent, rgba(var(--primary-rgb), 0.5), transparent); }
.step-item { text-align: center; padding: 0 8px; position: relative; }
.step-num { width: 80px; height: 80px; margin: 0 auto 16px; background: var(--bg-card); border: 2px solid var(--primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 26px; font-weight: 800; color: var(--primary); position: relative; z-index: 2; box-shadow: 0 0 0 6px rgba(var(--primary-rgb), 0.12); transition: var(--transition); }
.step-item:hover .step-num { background: var(--gradient-primary); color: #fff; box-shadow: 0 0 0 8px rgba(var(--primary-rgb), 0.18); }
.step-item h3 { font-size: 16px; font-weight: 700; color: var(--text-light); margin-bottom: 8px; }
.step-item p { font-size: 13px; color: var(--text-muted); line-height: 1.65; }

.platform-wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.platform-card { background: rgba(255, 255, 255, 0.03); border: 1px solid rgba(255, 255, 255, 0.07); border-radius: var(--radius-md); padding: 24px 22px; text-align: center; transition: var(--transition); }
.platform-card:hover { border-color: var(--border-glow); background: rgba(var(--primary-rgb), 0.06); transform: translateY(-4px); }
.platform-icon i { font-size: 34px; color: var(--primary); margin-bottom: 12px; display: block; }
.platform-card h4 { font-size: 15px; color: var(--text-light); font-weight: 700; margin-bottom: 6px; }
.platform-card small { font-size: 12px; color: var(--text-muted); }
.browser-tags { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin-top: 32px; }
.browser-tag { display: inline-flex; align-items: center; gap: 8px; background: rgba(255, 255, 255, 0.05); border: 1px solid rgba(255, 255, 255, 0.08); border-radius: 50px; padding: 8px 18px; font-size: 13px; color: var(--text-body); transition: var(--transition); }
.browser-tag:hover { border-color: var(--primary); color: var(--primary); }
.browser-tag i { font-size: 14px; }

.qa-list .accordion-item { background: var(--bg-card); border: 1px solid rgba(255, 255, 255, 0.07); border-radius: var(--radius-md) !important; margin-bottom: 14px; overflow: hidden; }
.qa-list .accordion-button { background: var(--bg-card); color: var(--text-light); font-weight: 600; font-size: 16px; padding: 20px 24px; box-shadow: none; }
.qa-list .accordion-button:not(.collapsed) { color: var(--primary); background: rgba(var(--primary-rgb), 0.08); }
.qa-list .accordion-button:focus { box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.15); }
.qa-list .accordion-button::after { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2300d4ff'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E"); }
.qa-list .accordion-body { color: var(--text-body); font-size: 14.5px; line-height: 1.85; padding: 8px 24px 22px; }

.cta-section { position: relative; padding: 80px 0; }
.cta-box { background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(11, 21, 36, 0.9)), var(--bg-section); border: 1px solid var(--border-color); border-radius: 24px; padding: 44px 50px; display: flex; align-items: center; justify-content: space-between; gap: 36px; position: relative; overflow: hidden; box-shadow: var(--shadow-card); }
.cta-box::before { content: ''; position: absolute; width: 280px; height: 280px; border-radius: 50%; background: rgba(var(--primary-rgb), 0.1); filter: blur(80px); top: -100px; right: -60px; }
.cta-text { position: relative; z-index: 2; }
.cta-text h3 { font-size: 26px; font-weight: 700; color: var(--text-light); margin-bottom: 8px; }
.cta-text p { font-size: 15px; color: var(--text-muted); margin: 0; }
.cta-actions { display: flex; gap: 12px; flex-shrink: 0; position: relative; z-index: 2; flex-wrap: wrap; }

.site-footer { background: var(--bg-deep); border-top: 1px solid rgba(255, 255, 255, 0.05); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 44px; }
.footer-logo { font-size: 20px; font-weight: 800; color: var(--text-light); display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-logo:hover { color: var(--primary); }
.footer-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.8; margin: 0; }
.footer-links h4 { font-size: 15px; color: var(--text-light); font-weight: 700; margin-bottom: 18px; }
.footer-links ul { padding: 0; margin: 0; }
.footer-links ul li { margin-bottom: 10px; }
.footer-links ul a { color: var(--text-muted); font-size: 14px; }
.footer-links ul a:hover { color: var(--primary); }
.footer-contact p { color: var(--text-muted); font-size: 14px; margin-bottom: 10px; }
.footer-contact i { color: var(--primary); }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.05); padding: 20px 0; text-align: center; }
.footer-bottom p { font-size: 13px; color: var(--text-muted); margin: 0; }
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary); }

@media (max-width: 991.98px) {
  .site-header .navbar { padding: 12px 0; }
  .navbar-collapse { padding: 16px 0; }
  .navbar-nav { gap: 0; width: 100%; }
  .nav-link { padding: 10px 14px !important; border-radius: 10px; }
  .header-actions { width: 100%; margin-top: 14px; flex-wrap: wrap; }
  .search-form { flex: 1; }
  .search-form input { width: 100%; }
  .page-banner { padding: 80px 0; }
  .page-banner h1 { font-size: 34px; }
  .overview-wrap { grid-template-columns: 1fr; gap: 32px; }
  .methods-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-wrap { grid-template-columns: 1fr; gap: 28px; }
  .steps-wrap::before { display: none; }
  .platform-wrap { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta-box { flex-direction: column; text-align: center; padding: 36px 28px; }
  .cta-actions { justify-content: center; }
}
@media (max-width: 767.98px) {
  :root { --spacing-section: 60px; }
  .section-title { font-size: 26px; }
  .page-banner h1 { font-size: 28px; }
  .methods-grid, .platform-wrap { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .overview-stat { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .stat-item .num { font-size: 22px; }
  .cta-box { padding: 30px 20px; }
  .cta-actions .btn { width: 100%; }
}
@media (max-width: 520px) {
  .page-banner h1 { font-size: 24px; }
  .section-head { margin-bottom: 36px; }
  .header-actions { flex-direction: column; }
  .header-actions .btn { width: 100%; }
  .overview-stat { grid-template-columns: 1fr; }
}

/* roulang page: article */
:root {
    --primary: #6c5ce7;
    --primary-2: #8b5cf6;
    --accent: #00d4ff;
    --accent-2: #f472b6;
    --warning: #f59e0b;
    --bg-body: #080c16;
    --bg-deep: #050810;
    --surface: #101828;
    --surface-2: #182236;
    --border-color: rgba(255, 255, 255, 0.07);
    --text-main: #e8ecf4;
    --text-muted: #8892a6;
    --radius-lg: 20px;
    --radius: 14px;
    --radius-sm: 8px;
    --shadow-lg: 0 30px 80px rgba(0, 0, 0, 0.55);
    --shadow: 0 15px 40px rgba(0, 0, 0, 0.35);
    --shadow-sm: 0 6px 20px rgba(0, 0, 0, 0.25);
    --gradient-primary: linear-gradient(135deg, #6c5ce7, #00d4ff);
    --transition: all 0.3s ease;
}
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: 'Noto Sans SC', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-body);
    background-image: radial-gradient(ellipse at 20% 0%, rgba(108, 92, 231, 0.14), transparent 50%), radial-gradient(ellipse at 85% 10%, rgba(0, 212, 255, 0.07), transparent 45%);
    color: var(--text-main);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
a {
    transition: var(--transition);
}
img {
    max-width: 100%;
    height: auto;
}
.container {
    max-width: 1220px;
}

/* ======= 顶部公告条 ======= */
.notice-strip {
    background: linear-gradient(90deg, rgba(108, 92, 231, 0.16), rgba(0, 212, 255, 0.1));
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    padding: 9px 0;
    font-size: 0.88rem;
    color: #c7d2fe;
}
.notice-strip .container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    text-align: center;
}
.notice-strip i {
    color: var(--warning);
}

/* ======= 导航 ======= */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1030;
    background: rgba(8, 12, 22, 0.9);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.navbar {
    padding: 12px 0;
    min-height: 70px;
}
.navbar-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.15rem;
    font-weight: 900;
    color: #fff;
    letter-spacing: 0.4px;
    white-space: nowrap;
}
.navbar-brand:hover {
    color: var(--accent);
}
.brand-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: var(--gradient-primary);
    border-radius: 12px;
    color: #fff;
    font-size: 1rem;
    box-shadow: 0 0 22px rgba(0, 212, 255, 0.4);
    flex-shrink: 0;
}
.navbar-nav .nav-link {
    color: var(--text-muted);
    font-weight: 500;
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 0.95rem;
    position: relative;
}
.navbar-nav .nav-link:hover {
    color: #fff;
    background: rgba(108, 92, 231, 0.14);
}
.navbar-nav .nav-link.active {
    color: #fff;
    background: rgba(108, 92, 231, 0.16);
}
.navbar-nav .nav-link.active::after {
    content: '';
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 1px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
}
.navbar-toggler {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    padding: 6px 10px;
    outline: none;
    transition: var(--transition);
}
.navbar-toggler:focus {
    outline: 2px solid rgba(0, 212, 255, 0.5);
    outline-offset: 2px;
}
.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}
.search-form {
    display: flex;
    align-items: center;
    background: var(--surface-2);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 50px;
    padding: 5px 6px 5px 16px;
    transition: var(--transition);
}
.search-form:focus-within {
    border-color: rgba(0, 212, 255, 0.5);
    box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.1);
}
.search-form input {
    background: transparent;
    border: none;
    color: var(--text-main);
    outline: none;
    width: 130px;
    font-size: 0.88rem;
}
.search-form input::placeholder {
    color: #6b7488;
}
.search-form button {
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
}
.search-form button:hover {
    transform: scale(1.06);
}
.btn {
    border-radius: 50px;
    padding: 10px 24px;
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    line-height: 1.4;
}
.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 8px 26px rgba(108, 92, 231, 0.35);
}
.btn-primary:hover {
    transform: translateY(-2px);
    color: #fff;
    box-shadow: 0 12px 32px rgba(0, 212, 255, 0.35);
}
.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 6px 20px rgba(108, 92, 231, 0.3);
}
.btn-outline {
    background: transparent;
    color: var(--text-main);
    border: 1px solid rgba(255, 255, 255, 0.15);
}
.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(0, 212, 255, 0.07);
    transform: translateY(-2px);
}
.btn-outline:active {
    transform: translateY(0);
}

/* ======= 页头横幅 ======= */
.page-banner {
    padding: 72px 0 56px;
    background: radial-gradient(ellipse at 75% 10%, rgba(108, 92, 231, 0.32), transparent 55%), radial-gradient(ellipse at 15% 0%, rgba(0, 212, 255, 0.16), transparent 45%), linear-gradient(180deg, rgba(8, 12, 22, 0.86), rgba(6, 9, 18, 0.95)), url('/assets/images/backpic/back-1.png') center 30% / cover no-repeat;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    position: relative;
}
.breadcrumb {
    margin-bottom: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.breadcrumb-item,
.breadcrumb-item a {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-decoration: none;
    transition: var(--transition);
}
.breadcrumb-item a:hover {
    color: var(--accent);
}
.breadcrumb-item.active {
    color: #fff;
}
.breadcrumb-item + .breadcrumb-item::before {
    content: '/';
    color: var(--text-muted);
    opacity: 0.5;
    padding-right: 6px;
}
.badge-category {
    display: inline-block;
    padding: 6px 18px;
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.25), rgba(0, 212, 255, 0.18));
    border: 1px solid rgba(0, 212, 255, 0.3);
    color: var(--accent);
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.82rem;
    letter-spacing: 1px;
    margin-bottom: 18px;
}
.page-banner h1 {
    font-size: 2.1rem;
    font-weight: 900;
    line-height: 1.35;
    color: #fff;
    max-width: 900px;
    margin-bottom: 0;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    color: var(--text-muted);
    font-size: 0.92rem;
    margin-top: 16px;
}
.article-meta i {
    color: var(--accent);
    margin-right: 6px;
}

/* ======= 文章主体 ======= */
.article-section {
    padding: 64px 0;
}
.article-card {
    background: linear-gradient(180deg, rgba(20, 28, 46, 0.95), rgba(14, 19, 32, 0.96));
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: var(--radius-lg);
    padding: 42px 44px;
    box-shadow: var(--shadow);
    margin-bottom: 32px;
}
.article-content {
    color: var(--text-main);
    font-size: 1.02rem;
    line-height: 1.9;
}
.article-content h2 {
    font-size: 1.48rem;
    font-weight: 800;
    margin: 34px 0 16px;
    color: #fff;
    padding-left: 14px;
    border-left: 4px solid var(--accent);
    border-radius: 2px;
}
.article-content h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin: 26px 0 12px;
    color: #fff;
}
.article-content h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin: 22px 0 10px;
    color: #fff;
}
.article-content p {
    margin-bottom: 18px;
}
.article-content a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px dashed rgba(0, 212, 255, 0.5);
}
.article-content a:hover {
    color: #fff;
    border-bottom-color: #fff;
}
.article-content img {
    max-width: 100%;
    border-radius: var(--radius);
    margin: 22px 0;
    box-shadow: var(--shadow-sm);
}
.article-content ul,
.article-content ol {
    margin-bottom: 18px;
    padding-left: 24px;
}
.article-content ul li,
.article-content ol li {
    margin-bottom: 8px;
}
.article-content li::marker {
    color: var(--accent);
}
.article-content blockquote {
    border-left: 4px solid var(--primary);
    background: rgba(108, 92, 231, 0.1);
    padding: 18px 22px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin-bottom: 20px;
    color: var(--text-muted);
    font-style: normal;
}
.article-content strong {
    color: #fff;
    font-weight: 700;
}
.article-content code {
    background: var(--surface-2);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.9em;
    color: var(--accent);
}
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
    font-size: 0.94rem;
}
.article-content th,
.article-content td {
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 10px 14px;
    text-align: left;
}
.article-content th {
    background: var(--surface-2);
    color: #fff;
    font-weight: 700;
    white-space: nowrap;
}
.article-footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-top: 40px;
    padding-top: 28px;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
}
.article-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}
.tags-label {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.9rem;
}
.article-tags a {
    display: inline-block;
    padding: 4px 14px;
    background: rgba(108, 92, 231, 0.12);
    color: #c4b5fd;
    border: 1px solid rgba(108, 92, 231, 0.25);
    border-radius: 50px;
    font-size: 0.85rem;
    text-decoration: none;
    transition: var(--transition);
}
.article-tags a:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-2px);
}
.share-row {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 0.9rem;
}
.share-row a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--surface-2);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}
.share-row a:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    color: #fff;
    transform: translateY(-2px);
}
.article-not-found {
    text-align: center;
    padding: 60px 20px;
}
.article-not-found i {
    font-size: 3rem;
    color: var(--accent);
    display: block;
    margin-bottom: 20px;
}
.article-not-found h2 {
    font-size: 1.6rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 14px;
}
.article-not-found p {
    color: var(--text-muted);
    margin-bottom: 28px;
}

/* ======= 侧边栏 ======= */
.sidebar-card {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 24px;
}
.sidebar-card h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.02rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.sidebar-card h3 i {
    color: var(--accent);
}
.sidebar-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 12px;
    background: var(--surface-2);
    border: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    text-decoration: none;
    margin-bottom: 10px;
    transition: var(--transition);
}
.sidebar-link:last-child {
    margin-bottom: 0;
}
.sidebar-link:hover {
    border-color: rgba(0, 212, 255, 0.4);
    transform: translateX(4px);
    color: var(--accent);
}
.link-icon {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.3), rgba(0, 212, 255, 0.2));
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 0.9rem;
}
.sidebar-link span {
    font-size: 0.92rem;
    font-weight: 600;
}
.sidebar-tip {
    display: flex;
    gap: 12px;
    padding: 16px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(239, 68, 68, 0.08));
    border: 1px solid rgba(245, 158, 11, 0.2);
}
.sidebar-tip i {
    color: var(--warning);
    font-size: 1.2rem;
    flex-shrink: 0;
}
.sidebar-tip p {
    color: var(--text-muted);
    font-size: 0.88rem;
    margin: 0;
    line-height: 1.7;
}
.sidebar-note {
    display: flex;
    gap: 12px;
    padding: 16px;
    border-radius: 12px;
    background: rgba(0, 212, 255, 0.06);
    border: 1px solid rgba(0, 212, 255, 0.15);
}
.sidebar-note i {
    color: var(--accent);
    font-size: 1.2rem;
    flex-shrink: 0;
}
.sidebar-note p {
    color: var(--text-muted);
    font-size: 0.88rem;
    margin: 0;
    line-height: 1.7;
}

/* ======= 相关服务 ======= */
.related-section {
    padding: 72px 0;
    background: var(--bg-deep);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.section-head {
    text-align: center;
    margin-bottom: 44px;
}
.section-tag {
    display: inline-block;
    padding: 5px 16px;
    border-radius: 50px;
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.2), rgba(0, 212, 255, 0.16));
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 12px;
}
.section-head h2 {
    font-size: 1.8rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 8px;
}
.section-head p {
    color: var(--text-muted);
    font-size: 0.95rem;
    max-width: 560px;
    margin: 0 auto;
}
.service-card {
    display: flex;
    align-items: stretch;
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-decoration: none;
    transition: var(--transition);
    height: 100%;
    margin-bottom: 24px;
}
.service-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: var(--shadow);
}
.service-img {
    width: 44%;
    flex-shrink: 0;
    overflow: hidden;
    min-height: 180px;
    position: relative;
}
.service-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.service-card:hover .service-img img {
    transform: scale(1.06);
}
.service-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}
.service-body h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    margin: 0;
}
.service-body p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 10px;
    flex: 1;
}
.service-more {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.service-more i {
    transition: transform 0.3s ease;
}
.service-card:hover .service-more i {
    transform: translateX(4px);
}

/* ======= FAQ ======= */
.faq-section {
    padding: 72px 0;
}
.faq-wrap {
    max-width: 860px;
    margin: 0 auto;
}
.accordion-item {
    background: var(--surface) !important;
    border: 1px solid rgba(255, 255, 255, 0.07) !important;
    border-radius: var(--radius) !important;
    margin-bottom: 14px;
    overflow: hidden;
    box-shadow: none !important;
}
.accordion-button {
    background: transparent !important;
    color: var(--text-main) !important;
    font-weight: 600;
    font-size: 1rem;
    padding: 20px 24px;
    line-height: 1.5;
}
.accordion-button:hover {
    background: rgba(108, 92, 231, 0.08) !important;
}
.accordion-button:not(.collapsed) {
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.18), rgba(0, 212, 255, 0.1)) !important;
    color: var(--accent) !important;
    box-shadow: none !important;
}
.accordion-button:focus {
    box-shadow: none !important;
    outline: 2px solid rgba(0, 212, 255, 0.5);
    outline-offset: -2px;
}
.accordion-button::after {
    filter: invert(1) hue-rotate(180deg);
    opacity: 0.8;
}
.accordion-button:not(.collapsed)::after {
    filter: invert(1) hue-rotate(180deg);
}
.accordion-collapse {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.accordion-body {
    padding: 20px 24px;
    color: var(--text-muted);
    line-height: 1.85;
    font-size: 0.95rem;
}
.accordion-body strong {
    color: #fff;
}

/* ======= CTA ======= */
.cta-section {
    padding: 30px 0 80px;
}
.cta-box {
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.22), rgba(0, 212, 255, 0.12)), var(--surface);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-lg);
    padding: 52px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta-box::before {
    content: '';
    position: absolute;
    top: -60%;
    left: -20%;
    width: 140%;
    height: 220%;
    background: radial-gradient(ellipse, rgba(0, 212, 255, 0.14), transparent 60%);
    pointer-events: none;
}
.cta-box h2 {
    color: #fff;
    font-size: 1.7rem;
    font-weight: 900;
    margin-bottom: 14px;
    position: relative;
}
.cta-box p {
    color: var(--text-muted);
    margin-bottom: 30px;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
    font-size: 0.98rem;
    position: relative;
}
.cta-box .btn {
    margin: 0 8px;
    position: relative;
}

/* ======= 页脚 ======= */
.site-footer {
    background: var(--bg-deep);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 60px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
}
.footer-logo {
    font-size: 1.15rem;
    font-weight: 800;
    color: #fff;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}
.footer-logo:hover {
    color: var(--accent);
}
.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.8;
    max-width: 340px;
}
.footer-links h4,
.footer-contact h4 {
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 16px;
}
.footer-links ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-links ul li {
    margin-bottom: 10px;
}
.footer-links ul a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.92rem;
    transition: var(--transition);
}
.footer-links ul a:hover {
    color: var(--accent);
    padding-left: 6px;
}
.footer-contact p {
    color: var(--text-muted);
    margin-bottom: 8px;
    font-size: 0.92rem;
}
.footer-contact i {
    color: var(--accent);
    width: 20px;
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 20px 0;
    text-align: center;
}
.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin: 0;
}
.footer-bottom a {
    color: var(--text-muted);
    text-decoration: none;
}
.footer-bottom a:hover {
    color: var(--accent);
}

/* ======= 响应式 ======= */
@media (max-width: 991.98px) {
    .navbar-nav {
        padding: 12px 0;
    }
    .navbar-nav .nav-link {
        padding: 10px 14px;
    }
    .header-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding: 12px 0 4px;
    }
    .search-form input {
        width: 100%;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
    .article-card {
        padding: 30px 28px;
    }
    .page-banner {
        padding: 56px 0 44px;
    }
    .page-banner h1 {
        font-size: 1.7rem;
    }
    .service-card {
        flex-direction: column;
    }
    .service-img {
        width: 100%;
    }
    .service-img img {
        max-height: 200px;
    }
    .cta-box {
        padding: 40px 28px;
    }
}
@media (max-width: 767.98px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .page-banner h1 {
        font-size: 1.45rem;
    }
    .cta-box {
        padding: 34px 20px;
    }
    .cta-box .btn {
        margin: 6px 4px;
    }
    .article-section {
        padding: 40px 0;
    }
    .related-section,
    .faq-section {
        padding: 50px 0;
    }
    .article-footer {
        flex-direction: column;
        align-items: flex-start;
    }
    .section-head h2 {
        font-size: 1.5rem;
    }
    .navbar-brand {
        font-size: 1rem;
    }
    .brand-icon {
        width: 34px;
        height: 34px;
        font-size: 0.9rem;
    }
}
@media (max-width: 520px) {
    .article-card {
        padding: 22px 16px;
    }
    .article-meta {
        flex-direction: column;
        gap: 8px;
    }
    .service-body {
        padding: 18px;
    }
    .breadcrumb-item,
    .breadcrumb-item a {
        font-size: 0.8rem;
    }
    .page-banner {
        padding: 44px 0 36px;
    }
    .page-banner h1 {
        font-size: 1.3rem;
    }
    .badge-category {
        font-size: 0.76rem;
        padding: 5px 14px;
    }
    .notice-strip {
        font-size: 0.8rem;
    }
}

/* roulang page: category2 */
:root {
  --brand-primary: #00d4ff;
  --brand-secondary: #7b2ff7;
  --brand-accent: #ff2d78;
  --bg-body: #0b0f1e;
  --bg-card: #141b2d;
  --bg-card-hover: #1a2338;
  --bg-section: #0e1424;
  --bg-deep: #080c18;
  --text-title: #ffffff;
  --text-main: #e8edf8;
  --text-weak: #8892b0;
  --border-soft: rgba(255,255,255,0.08);
  --border-glow: rgba(0,212,255,0.3);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-card: 0 12px 40px rgba(0,0,0,0.35);
  --shadow-glow: 0 0 30px rgba(0,212,255,0.12);
  --font-main: "PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: all .25s ease; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; margin: 0; padding: 0; }
button { border: none; background: none; font-family: inherit; }
input, button { outline: none; }
.container { max-width: 1200px; }
section { position: relative; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1.4;
  border: 1px solid transparent;
  transition: all .3s ease;
  letter-spacing: .3px;
}
.btn:focus { box-shadow: 0 0 0 4px rgba(0,212,255,.15); }
.btn-primary {
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  color: #fff;
  border: none;
  box-shadow: 0 4px 22px rgba(0,212,255,.25);
}
.btn-primary:hover {
  transform: translateY(-2px);
  color: #fff;
  box-shadow: 0 8px 32px rgba(0,212,255,.38);
}
.btn-outline {
  border: 1px solid rgba(255,255,255,.25);
  color: var(--text-main);
  background: transparent;
}
.btn-outline:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  background: rgba(0,212,255,.06);
}
.btn-glow {
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  color: #fff;
  padding: 14px 38px;
  font-size: 16px;
  border-radius: 50px;
  box-shadow: 0 0 30px rgba(0,212,255,.3), 0 4px 24px rgba(123,47,247,.25);
}
.btn-glow:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 45px rgba(0,212,255,.45), 0 8px 36px rgba(123,47,247,.35);
  color: #fff;
}
.btn-outline-light {
  border: 1px solid rgba(255,255,255,.35);
  color: #fff;
  background: rgba(255,255,255,.05);
}
.btn-outline-light:hover {
  background: rgba(255,255,255,.12);
  color: #fff;
  border-color: rgba(255,255,255,.6);
}

/* ===== 顶部导航 ===== */
.site-header {
  background: rgba(8,12,24,.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-soft);
  position: sticky;
  top: 0;
  z-index: 1030;
  padding: 12px 0;
}
.site-header .navbar { padding: 0; }
.site-header .navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  letter-spacing: .5px;
}
.site-header .navbar-brand:hover { color: var(--brand-primary); }
.brand-icon {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  border-radius: 10px;
  color: #fff;
  font-size: 16px;
  box-shadow: 0 0 18px rgba(0,212,255,.3);
}
.navbar-nav { gap: 6px; }
.navbar-nav .nav-link {
  color: var(--text-weak);
  font-weight: 500;
  font-size: 15px;
  padding: 10px 16px !important;
  border-radius: 30px;
  letter-spacing: .2px;
}
.navbar-nav .nav-link:hover {
  color: var(--brand-primary);
  background: rgba(0,212,255,.06);
}
.navbar-nav .nav-link.active {
  color: var(--brand-primary);
  background: rgba(0,212,255,.1);
  font-weight: 600;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.search-form {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border-soft);
  border-radius: 50px;
  padding: 4px 6px 4px 16px;
  transition: all .3s ease;
}
.search-form:focus-within { border-color: var(--brand-primary); box-shadow: 0 0 15px rgba(0,212,255,.12); }
.search-form input {
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 14px;
  width: 120px;
  transition: width .3s ease;
}
.search-form input::placeholder { color: var(--text-weak); }
.search-form input:focus { width: 150px; box-shadow: none; }
.search-form button {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  border-radius: 50%;
  color: #fff;
  font-size: 13px;
  cursor: pointer;
  transition: all .3s;
}
.search-form button:hover { transform: scale(1.06); }
.header-actions .btn { padding: 9px 20px; font-size: 14px; }
.navbar-toggler { border-color: rgba(255,255,255,.2); border-radius: 8px; padding: 6px 10px; }
.navbar-toggler:focus { box-shadow: 0 0 0 3px rgba(0,212,255,.2); }
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ===== 页面Banner ===== */
.page-banner {
  background: linear-gradient(to bottom, rgba(8,12,24,.85), rgba(11,15,30,.92)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  padding: 130px 0 110px;
  position: relative;
  text-align: center;
}
.banner-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,212,255,.1);
  border: 1px solid rgba(0,212,255,.3);
  color: var(--brand-primary);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 24px;
  letter-spacing: 1px;
}
.page-banner h1 {
  font-size: 44px;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.banner-lead {
  font-size: 17px;
  color: rgba(232,237,248,.75);
  max-width: 680px;
  margin: 0 auto 36px;
  line-height: 1.8;
}
.banner-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 36px; }
.banner-meta {
  display: flex;
  gap: 28px;
  justify-content: center;
  flex-wrap: wrap;
  color: var(--text-weak);
  font-size: 14px;
}
.banner-meta span { display: inline-flex; align-items: center; gap: 7px; }
.banner-meta i { color: var(--brand-primary); }

/* ===== 面包屑 ===== */
.breadcrumb-bar {
  background: var(--bg-deep);
  border-bottom: 1px solid var(--border-soft);
  padding: 14px 0;
}
.breadcrumb-bar .breadcrumb { margin: 0; }
.breadcrumb-bar .breadcrumb-item { font-size: 13px; color: var(--text-weak); }
.breadcrumb-bar .breadcrumb-item a { color: var(--text-weak); }
.breadcrumb-bar .breadcrumb-item a:hover { color: var(--brand-primary); }
.breadcrumb-bar .breadcrumb-item.active { color: var(--text-main); }
.breadcrumb-bar .breadcrumb-item + .breadcrumb-item::before { color: var(--text-weak); content: "/"; }

/* ===== 通用区块 ===== */
.section-padding { padding: 96px 0; }
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section-head .section-tag {
  display: inline-block;
  background: rgba(0,212,255,.1);
  color: var(--brand-primary);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 50px;
  letter-spacing: 2px;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.section-head h2 {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  line-height: 1.35;
  margin-bottom: 14px;
}
.section-head p { color: var(--text-weak); font-size: 16px; line-height: 1.8; }
.bg-alt { background: var(--bg-section); }
.bg-deep { background: var(--bg-deep); }

/* ===== 核心服务卡片 ===== */
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .4s ease;
  height: 100%;
  position: relative;
}
.service-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0,212,255,.35);
  box-shadow: 0 18px 50px rgba(0,0,0,.5), 0 0 30px rgba(0,212,255,.08);
}
.service-card-img {
  position: relative;
  height: 190px;
  overflow: hidden;
}
.service-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.service-card:hover .service-card-img img { transform: scale(1.06); }
.service-card-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--bg-card) 0%, rgba(20,27,45,.35) 60%, rgba(20,27,45,.15) 100%);
}
.service-icon {
  position: absolute;
  bottom: 18px;
  left: 24px;
  z-index: 2;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  border-radius: 12px;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 4px 18px rgba(0,212,255,.3);
}
.service-card-body { padding: 28px 26px 30px; }
.service-card-body h3 { font-size: 19px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.service-card-body p { color: var(--text-weak); font-size: 14.5px; line-height: 1.75; margin-bottom: 18px; }
.service-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand-primary);
  font-size: 14px;
  font-weight: 600;
}
.service-card-link i { transition: transform .3s ease; }
.service-card-link:hover { color: var(--brand-accent); }
.service-card-link:hover i { transform: translateX(4px); }

/* ===== 防护指南图文 ===== */
.guide-wrap {
  display: flex;
  align-items: center;
  gap: 60px;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 48px;
  transition: all .4s ease;
}
.guide-wrap:hover { border-color: rgba(0,212,255,.25); box-shadow: var(--shadow-card); }
.guide-media { flex: 0 0 42%; border-radius: var(--radius-lg); overflow: hidden; position: relative; }
.guide-media img { width: 100%; height: 320px; object-fit: cover; border-radius: var(--radius-lg); }
.guide-media::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(0,212,255,.12), rgba(123,47,247,.08));
  pointer-events: none;
}
.guide-content { flex: 1; }
.guide-content h3 { font-size: 26px; font-weight: 800; color: #fff; margin-bottom: 10px; }
.guide-desc { color: var(--text-weak); font-size: 15px; line-height: 1.8; margin-bottom: 22px; }
.guide-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  color: var(--text-main);
  font-size: 15px;
}
.guide-list li i {
  color: var(--brand-primary);
  font-size: 14px;
  background: rgba(0,212,255,.1);
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}
.guide-btn { margin-top: 24px; }

/* ===== 安全流程 ===== */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-item {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  text-align: center;
  position: relative;
  transition: all .4s ease;
}
.step-item:hover { transform: translateY(-6px); border-color: rgba(0,212,255,.3); box-shadow: var(--shadow-glow); }
.step-num {
  position: absolute;
  top: 18px;
  right: 20px;
  font-size: 40px;
  font-weight: 900;
  color: rgba(255,255,255,.05);
  line-height: 1;
}
.step-icon {
  width: 62px;
  height: 62px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(0,212,255,.15), rgba(123,47,247,.15));
  border: 1px solid rgba(0,212,255,.25);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--brand-primary);
  transition: all .35s ease;
}
.step-item:hover .step-icon { transform: scale(1.08); box-shadow: 0 0 22px rgba(0,212,255,.2); }
.step-item h3 { font-size: 17px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.step-item p { color: var(--text-weak); font-size: 14px; line-height: 1.7; margin: 0; }

/* ===== 数据统计 ===== */
.stats-panel {
  background: linear-gradient(135deg, #0d1528 0%, #131a2e 50%, #0d1528 100%);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 56px 40px;
  position: relative;
  overflow: hidden;
}
.stats-panel::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(0,212,255,.12), transparent 60%);
  pointer-events: none;
}
.stats-panel::after {
  content: "";
  position: absolute;
  bottom: -80px;
  left: -80px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(123,47,247,.12), transparent 60%);
  pointer-events: none;
}
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; position: relative; z-index: 1; }
.stat-item { text-align: center; }
.stat-number {
  font-size: 48px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--brand-primary), #fff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  margin-bottom: 6px;
  letter-spacing: -1px;
}
.stat-label { color: var(--text-weak); font-size: 15px; }
.stat-divider { width: 1px; background: var(--border-soft); }

/* ===== FAQ手风琴 ===== */
.faq-accordion .accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md) !important;
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color .3s ease;
}
.faq-accordion .accordion-item:hover { border-color: rgba(0,212,255,.2); }
.faq-accordion .accordion-button {
  background: transparent;
  color: var(--text-main);
  font-weight: 600;
  font-size: 16px;
  padding: 20px 24px;
  gap: 12px;
  box-shadow: none;
  transition: all .3s ease;
}
.faq-accordion .accordion-button:not(.collapsed) {
  background: rgba(0,212,255,.06);
  color: var(--brand-primary);
}
.faq-accordion .accordion-button:focus {
  box-shadow: none;
  border-color: rgba(0,212,255,.3);
}
.faq-accordion .accordion-button::after {
  background-size: 16px;
  filter: brightness(0) invert(1);
  opacity: .6;
}
.faq-accordion .accordion-button:not(.collapsed)::after {
  filter: brightness(0) invert(1);
  opacity: .9;
}
.faq-accordion .accordion-body {
  padding: 0 24px 22px;
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.8;
}
.accordion-tag {
  width: 30px;
  height: 30px;
  flex: 0 0 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(0,212,255,.15), rgba(123,47,247,.15));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--brand-primary);
}

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, #0a0f1e 0%, #141b2d 100%);
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 640px;
  height: 640px;
  background: radial-gradient(circle, rgba(0,212,255,.1), transparent 55%);
  pointer-events: none;
}
.cta-inner { text-align: center; position: relative; z-index: 1; max-width: 720px; margin: 0 auto; }
.cta-inner h2 { font-size: 32px; font-weight: 800; color: #fff; margin-bottom: 14px; }
.cta-inner p { color: var(--text-weak); font-size: 16px; margin-bottom: 30px; line-height: 1.8; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta-badge {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  background: rgba(0,212,255,.08);
  border: 1px solid rgba(0,212,255,.2);
  color: var(--brand-primary);
  font-size: 13px;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 20px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border-soft);
  padding: 70px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 50px;
  padding-bottom: 50px;
}
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}
.footer-logo:hover { color: var(--brand-primary); }
.footer-brand p { color: var(--text-weak); font-size: 14px; line-height: 1.75; max-width: 320px; margin-bottom: 0; }
.footer-links h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer-links ul li { margin-bottom: 10px; }
.footer-links ul li a { color: var(--text-weak); font-size: 14px; }
.footer-links ul li a:hover { color: var(--brand-primary); }
.footer-contact p { color: var(--text-weak); font-size: 14px; margin-bottom: 10px; }
.footer-contact p i { color: var(--brand-primary); width: 22px; text-align: center; }
.footer-bottom {
  border-top: 1px solid var(--border-soft);
  padding: 22px 0;
  text-align: center;
}
.footer-bottom p { color: var(--text-weak); font-size: 13px; margin: 0; }
.footer-bottom a { color: var(--text-weak); }
.footer-bottom a:hover { color: var(--brand-primary); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .guide-wrap { flex-direction: column; padding: 36px; gap: 32px; }
  .guide-media { flex: 1 1 auto; width: 100%; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}
@media (max-width: 768px) {
  .section-padding { padding: 70px 0; }
  .page-banner { padding: 100px 0 80px; }
  .page-banner h1 { font-size: 32px; }
  .banner-lead { font-size: 15px; }
  .section-head h2 { font-size: 28px; }
  .stats-grid { grid-template-columns: 1fr; gap: 28px; }
  .stat-divider { display: none; }
  .header-actions { display: none; }
  .navbar-nav { padding: 14px 0; }
  .navbar-nav .nav-link { text-align: center; }
  .search-form { display: none; }
}
@media (max-width: 520px) {
  .steps-grid { grid-template-columns: 1fr; }
  .guide-wrap { padding: 24px; }
  .guide-media img { height: 240px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand p { max-width: 100%; }
  .stats-panel { padding: 40px 24px; }
  .stat-number { font-size: 40px; }
  .banner-actions .btn { width: 100%; }
  .cta-actions .btn { width: 100%; }
}
@media (max-width: 992px) {
  .header-actions { display: none; }
  .navbar-collapse { padding-top: 12px; }
}