/* roulang page: index */
:root{
  --primary:#2E6BFF;
  --accent:#23D5EE;
  --gold:#D8A94A;
  --bg-deep:#070C18;
  --bg-main:#0C1428;
  --bg-elevated:#111C36;
  --text-1:#EAF0FB;
  --text-2:#9CACCC;
  --text-3:#60708F;
  --green:#38D39F;
  --danger:#FF6B7A;
  --glass-bg:rgba(255,255,255,.05);
  --glass-bg-strong:rgba(255,255,255,.08);
  --glass-border:rgba(255,255,255,.12);
  --radius-xl:20px;
  --radius-lg:18px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-card:0 8px 32px rgba(0,0,0,.35);
  --shadow-primary:0 0 20px rgba(46,107,255,.45);
  --shadow-accent:0 0 20px rgba(35,213,238,.35);
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',sans-serif;
  --font-num:'DIN Alternate','Bahnschrift',system-ui,sans-serif;
  --ease: cubic-bezier(.25,.8,.25,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-cn);
  background:var(--bg-main);
  color:var(--text-1);
  font-size:15px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent);text-decoration:none;transition:color .3s var(--ease)}
a:hover{color:#fff}
img{max-width:100%;display:block}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 20px;width:100%}
h1,h2,h3,h4{line-height:1.2;font-weight:800;color:var(--text-1)}
h1{font-size:44px;font-weight:900}
h2{font-size:30px}
h3{font-size:20px}
p{color:var(--text-2)}
img{object-fit:cover}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:999px;
  font-size:13px;font-weight:600;
  background:rgba(46,107,255,.15);
  border:1px solid rgba(46,107,255,.35);
  color:var(--accent);
  letter-spacing:.3px;
}
.badge-gold{
  background:rgba(216,169,74,.12);
  border-color:rgba(216,169,74,.4);
  color:var(--gold);
}
.glass-card{
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-lg);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow-card);
  transition:transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.glass-card:hover{
  transform:translateY(-4px);
  border-color:rgba(35,213,238,.3);
  box-shadow:0 12px 40px rgba(0,0,0,.45),0 0 24px rgba(35,213,238,.18);
}
.gradient-top{
  position:relative;overflow:hidden;
}
.gradient-top::before{
  content:'';position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  border-radius:var(--radius-lg) var(--radius-lg) 0 0;
  z-index:2;
}
.gradient-top.gold::before{
  background:linear-gradient(90deg,var(--gold),#f5d782);
}

.section-title-wrap{
  display:flex;align-items:center;gap:14px;
  margin-bottom:16px;
}
.section-title-bar{
  width:4px;height:28px;border-radius:4px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
  flex-shrink:0;
}
.section-title-sub{
  color:var(--text-3);
  font-size:14px;
  letter-spacing:2px;
  margin-top:4px;
}
.section{
  padding:90px 0;
  position:relative;
}
.section-intro{
  max-width:680px;
  margin-bottom:44px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.8;
}
.hud-grid-bg{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(35,213,238,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(35,213,238,.04) 1px,transparent 1px);
  background-size:64px 64px;
  z-index:0;
}
.hud-glow{
  position:absolute;width:500px;height:500px;border-radius:50%;
  filter:blur(120px);opacity:.08;z-index:0;pointer-events:none;
}
.hud-glow-blue{background:var(--primary);top:10%;left:-10%}
.hud-glow-cyan{background:var(--accent);bottom:0;right:-5%}
.hud-glow-gold{background:var(--gold);top:40%;right:30%}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 30px;border-radius:var(--radius-md);
  font-size:15px;font-weight:700;letter-spacing:.4px;
  border:1px solid transparent;transition:all .3s var(--ease);
  min-height:44px;line-height:1;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),#1a4fdb);
  color:#fff;
  box-shadow:var(--shadow-primary);
  border-color:rgba(46,107,255,.5);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 0 32px rgba(46,107,255,.65);
  color:#fff;
}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:rgba(255,255,255,.06);
  border-color:var(--glass-border);
  color:var(--text-1);
  backdrop-filter:blur(8px);
}
.btn-ghost:hover{
  background:rgba(255,255,255,.12);
  border-color:var(--accent);
  color:var(--accent);
  transform:translateY(-2px);
}
.btn-gold{
  background:linear-gradient(135deg,var(--gold),#b8862e);
  color:#0A0F1E;
  box-shadow:0 0 20px rgba(216,169,74,.35);
}
.btn-gold:hover{box-shadow:0 0 32px rgba(216,169,74,.5);color:#0A0F1E;transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:14px;border-radius:10px}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(7,12,24,.82);
  backdrop-filter:blur(16px) saturate(160%);
  -webkit-backdrop-filter:blur(16px) saturate(160%);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.nav-container{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;max-width:1280px;margin:0 auto;padding:0 20px;
}
.logo{
  font-size:17px;font-weight:800;color:var(--text-1);letter-spacing:.4px;
  display:flex;align-items:center;gap:8px;
}
.logo i{color:var(--accent);font-size:20px}
.logo:hover{color:var(--accent)}
.nav-menu{
  display:flex;align-items:center;gap:4px;margin:0;padding:0;list-style:none;
}
.nav-item{position:relative;margin:0}
.nav-link{
  display:flex;align-items:center;gap:6px;
  padding:12px 16px;color:var(--text-2);
  font-size:14px;font-weight:600;border-radius:10px;
  transition:all .25s var(--ease);
}
.nav-link i{font-size:12px;color:var(--text-3);transition:transform .3s}
.nav-link:hover,.nav-link.active{color:#fff;background:rgba(255,255,255,.08)}
.nav-item.dropdown:hover .nav-link i{transform:rotate(180deg)}
.nav-cta{margin-left:10px}
.nav-cta .btn{padding:10px 22px;font-size:14px;min-height:40px}

.dropdown-panel{
  position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(12px);
  width:420px;background:rgba(12,20,40,.95);
  border:1px solid var(--glass-border);
  border-radius:16px;padding:20px;
  backdrop-filter:blur(24px) saturate(160%);
  -webkit-backdrop-filter:blur(24px) saturate(160%);
  box-shadow:0 20px 50px rgba(0,0,0,.5);
  opacity:0;visibility:hidden;
  transition:all .3s var(--ease);
  z-index:100;
}
.dropdown-panel::before{
  content:'';position:absolute;top:-8px;left:50%;transform:translateX(-50%);
  border:8px solid transparent;border-bottom-color:rgba(255,255,255,.12);
}
.nav-item.dropdown:hover .dropdown-panel,
.nav-item.dropdown:focus-within .dropdown-panel{
  opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);
}
.dropdown-grid{display:flex;gap:20px}
.dropdown-col{flex:1}
.dropdown-col h4{
  font-size:12px;color:var(--text-3);
  letter-spacing:2px;text-transform:uppercase;
  margin-bottom:12px;font-weight:700;
}
.dropdown-menu a{
  display:block;padding:7px 8px;border-radius:8px;
  color:var(--text-2);font-size:14px;
  transition:all .2s var(--ease);
}
.dropdown-menu a:hover{background:rgba(46,107,255,.15);color:var(--accent);padding-left:12px}
.dropdown-list-item{
  display:flex;align-items:center;gap:10px;
  padding:7px 8px;border-radius:8px;
  transition:all .2s var(--ease);
}
.dropdown-list-item:hover{background:rgba(35,213,238,.1)}
.dropdown-list-item img{width:36px;height:28px;border-radius:6px;object-fit:cover}
.dropdown-list-item .dli-title{
  font-size:13px;color:var(--text-1);font-weight:600;line-height:1.3;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.dropdown-list-item .dli-time{font-size:11px;color:var(--text-3)}
.menu-toggle{display:none;background:none;border:none;padding:8px;border-radius:8px}
.menu-toggle span{display:block;width:22px;height:2px;background:var(--text-1);margin:5px 0;border-radius:2px;transition:all .3s}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== Hero ===== */
.hero{
  position:relative;padding:100px 0 80px;overflow:hidden;
  background:linear-gradient(160deg,var(--bg-deep) 0%,var(--bg-main) 60%,#0a1224 100%);
}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.2;
}
.hero-overlay{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(115deg,rgba(7,12,24,.92) 30%,rgba(7,12,24,.68) 70%,rgba(7,12,24,.45));
}
.hero-grid{
  position:absolute;inset:0;z-index:1;
  background-image:linear-gradient(rgba(35,213,238,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(35,213,238,.05) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero-container{
  position:relative;z-index:5;
  display:flex;align-items:center;gap:60px;
  max-width:1200px;margin:0 auto;padding:0 20px;
}
.hero-content{flex:1.2;min-width:0}
.hero-badges{display:flex;gap:12px;margin-bottom:24px;flex-wrap:wrap}
.hero h1{font-size:42px;line-height:1.15;letter-spacing:1px;margin-bottom:20px}
.hero h1 .highlight{
  background:linear-gradient(90deg,var(--accent),var(--primary));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-desc{
  font-size:16px;color:var(--text-2);
  margin-bottom:32px;max-width:540px;line-height:1.8;
}
.hero-ctas{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:36px}
.hero-stats{
  display:flex;gap:36px;flex-wrap:wrap;
  padding-top:32px;border-top:1px solid rgba(255,255,255,.08);
}
.hero-stat-item .hero-stat-num{
  font-family:var(--font-num);
  font-size:36px;font-weight:700;color:var(--text-1);
  letter-spacing:1px;line-height:1.1;
}
.hero-stat-item .hero-stat-num span{color:var(--accent);font-size:20px;margin-left:2px}
.hero-stat-item .hero-stat-label{font-size:13px;color:var(--text-3);margin-top:4px}
.hero-visual{flex:1;min-width:0;max-width:440px}
.hero-card{
  position:relative;
  padding:30px;
  border-radius:var(--radius-xl);
  background:rgba(255,255,255,.07);
  border:1px solid rgba(216,169,74,.35);
  backdrop-filter:blur(20px) saturate(150%);
  -webkit-backdrop-filter:blur(20px) saturate(150%);
  box-shadow:0 20px 60px rgba(0,0,0,.5),0 0 40px rgba(216,169,74,.12);
  transform:rotate(1deg);
}
.hero-card::before{
  content:'';position:absolute;top:-1px;left:-1px;right:-1px;height:3px;
  background:linear-gradient(90deg,var(--gold),#f5d782,var(--gold));
  border-radius:var(--radius-xl) var(--radius-xl) 0 0;
}
.hero-card-rec{
  position:absolute;top:-12px;right:18px;
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:700;
  background:linear-gradient(90deg,var(--gold),#f5d782);
  color:#0A0F1E;box-shadow:0 4px 16px rgba(216,169,74,.4);
}
.hero-card-title{font-size:20px;font-weight:800;margin-bottom:6px;display:flex;align-items:center;gap:8px}
.hero-card-sub{font-size:13px;color:var(--text-2);margin-bottom:20px}
.hero-card-list{margin:0 0 22px;padding:0;list-style:none}
.hero-card-list li{
  display:flex;align-items:center;gap:10px;
  padding:8px 0;border-bottom:1px dashed rgba(255,255,255,.1);
  font-size:14px;color:var(--text-1);
}
.hero-card-list li:last-child{border-bottom:none}
.hero-card-list li i{color:var(--gold);font-size:14px;flex-shrink:0;width:18px;text-align:center}
.hero-card-price{
  display:flex;align-items:baseline;gap:8px;margin-bottom:18px;
}
.hero-card-price .price{font-size:28px;font-weight:800;color:var(--gold);font-family:var(--font-num)}
.hero-card-price .unit{font-size:13px;color:var(--text-3)}
.hero-card .btn{width:100%}

/* ===== Metrics ===== */
.metrics{
  position:relative;
  background:var(--bg-main);
  border-top:1px solid rgba(255,255,255,.04);
  border-bottom:1px solid rgba(255,255,255,.04);
}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.metric-card{
  padding:28px 24px;text-align:left;
  position:relative;overflow:hidden;
}
.metric-card .metric-icon{
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(46,107,255,.15);color:var(--accent);
  font-size:20px;margin-bottom:16px;
}
.metric-card .metric-num{
  font-family:var(--font-num);
  font-size:42px;font-weight:700;line-height:1.1;
  color:var(--text-1);letter-spacing:1px;
}
.metric-card .metric-num span{font-size:18px;color:var(--accent);margin-left:4px}
.metric-card .metric-label{
  font-size:14px;color:var(--text-2);margin-top:8px;
}
.metric-card .metric-trend{
  position:absolute;top:22px;right:20px;
  font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px;
  background:rgba(56,211,159,.15);color:var(--green);
  border:1px solid rgba(56,211,159,.3);
}

/* ===== Services ===== */
.services{
  position:relative;
  background:var(--bg-deep);
}
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{
  position:relative;overflow:hidden;
  padding:0;
}
.service-cover{
  position:relative;height:160px;overflow:hidden;
  background:var(--bg-elevated);
}
.service-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.service-card:hover .service-cover img{transform:scale(1.05)}
.service-cover::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(7,12,24,.6));
}
.service-level{
  position:absolute;top:12px;right:12px;
  padding:5px 14px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.5px;
  background:rgba(216,169,74,.2);color:var(--gold);
  border:1px solid rgba(216,169,74,.4);
  backdrop-filter:blur(4px);z-index:2;
}
.service-level.blue{
  background:rgba(46,107,255,.2);color:var(--accent);border-color:rgba(46,107,255,.4);
}
.service-level.green{
  background:rgba(56,211,159,.15);color:var(--green);border-color:rgba(56,211,159,.3);
}
.service-body{padding:22px 24px 26px}
.service-body h3{font-size:19px;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.service-body h3 i{color:var(--accent);font-size:17px}
.service-body > p{font-size:14px;color:var(--text-2);line-height:1.6;margin-bottom:16px}
.service-features{margin:0 0 20px;padding:0;list-style:none}
.service-features li{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-1);padding:5px 0;
}
.service-features li::before{
  content:'◆';color:var(--primary);font-size:10px;flex-shrink:0;
}
.service-features li:nth-child(2n)::before{color:var(--accent)}
.service-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--accent);font-size:14px;font-weight:600;transition:gap .3s;
}
.service-link:hover{gap:12px;color:#fff}

/* ===== Comparison ===== */
.comparison{
  position:relative;
  background:var(--bg-main);
}
.compare-wrap{
  display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:20px;
}
.compare-box{
  border-radius:var(--radius-lg);
  padding:28px;
  border:1px solid var(--glass-border);
  background:rgba(255,255,255,.02);
}
.compare-box-vs{
  border-radius:var(--radius-lg);
  padding:28px;
  border:1px solid rgba(46,107,255,.4);
  background:rgba(46,107,255,.06);
  box-shadow:0 0 40px rgba(46,107,255,.15);
  position:relative;
}
.compare-box-vs::before{
  content:'推荐';position:absolute;top:-12px;right:20px;
  padding:4px 12px;border-radius:999px;
  background:var(--primary);color:#fff;font-size:12px;font-weight:700;
  box-shadow:0 4px 16px rgba(46,107,255,.4);
}
.compare-title{
  font-size:18px;font-weight:800;margin-bottom:20px;
  display:flex;align-items:center;gap:8px;
}
.compare-title i{font-size:18px}
.compare-box .compare-title i{color:var(--text-3)}
.compare-box-vs .compare-title{color:var(--accent)}
.compare-rows{display:flex;flex-direction:column}
.compare-row{
  display:flex;justify-content:space-between;align-items:center;
  padding:14px 0;border-bottom:1px solid rgba(255,255,255,.08);
  gap:16px;
}
.compare-row:last-child{border-bottom:none}
.compare-dim{font-size:14px;color:var(--text-3);flex-shrink:0;width:84px;font-weight:600}
.compare-val{font-size:14px;color:var(--text-2);text-align:right;flex:1}
.compare-box-vs .compare-val{color:var(--text-1);font-weight:500}
.compare-note{
  margin-top:20px;padding:14px 16px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.04);font-size:13px;color:var(--text-3);
  display:flex;align-items:center;gap:8px;
}
.compare-note i{color:var(--gold)}

/* ===== News ===== */
.news{
  position:relative;
  background:var(--bg-deep);
}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{overflow:hidden;display:flex;flex-direction:column}
.news-cover{
  position:relative;height:180px;overflow:hidden;
  background:var(--bg-elevated);
}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.05)}
.news-cover::after{
  content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(7,12,24,.7));
}
.news-cat{
  position:absolute;bottom:12px;left:12px;z-index:2;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;
  background:rgba(46,107,255,.25);color:var(--accent);
  border:1px solid rgba(46,107,255,.4);backdrop-filter:blur(4px);
}
.news-body{padding:20px 20px 24px;display:flex;flex-direction:column;flex:1}
.news-body h3{
  font-size:17px;line-height:1.4;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body h3 a{color:var(--text-1)}
.news-body h3 a:hover{color:var(--accent)}
.news-excerpt{
  font-size:13px;color:var(--text-2);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:16px;flex:1;
}
.news-meta{
  display:flex;justify-content:space-between;align-items:center;
  font-size:12px;color:var(--text-3);
  border-top:1px solid rgba(255,255,255,.06);padding-top:14px;
}
.news-meta a{
  color:var(--accent);font-size:13px;font-weight:600;
  display:inline-flex;align-items:center;gap:4px;
  transition:gap .3s;
}
.news-meta a:hover{gap:8px;color:#fff}
.news-empty{
  grid-column:1/-1;
  padding:60px 30px;text-align:center;
  border-radius:var(--radius-lg);
  background:rgba(255,255,255,.03);
  border:1px dashed rgba(255,255,255,.15);
  color:var(--text-2);font-size:15px;
}

/* ===== FAQ ===== */
.faq{
  position:relative;
  background:var(--bg-main);
}
.faq-wrap{max-width:820px;margin:0 auto}
.accordion{
  border:none;
  background:transparent;
}
.accordion-item{
  background:rgba(255,255,255,.04);
  border:1px solid var(--glass-border);
  border-radius:14px;
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .3s, background .3s;
}
.accordion-item.is-active{
  border-color:rgba(46,107,255,.4);
  background:rgba(46,107,255,.06);
}
.accordion-title{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 22px;
  font-size:15px;font-weight:700;color:var(--text-1);
  transition:all .3s var(--ease);
}
.accordion-title:hover{background:rgba(255,255,255,.05);color:var(--accent)}
.accordion-title::after{
  content:'\f078';font-family:'Font Awesome 6 Free';font-weight:900;
  font-size:11px;color:var(--text-3);transition:transform .3s;
}
.accordion-item.is-active .accordion-title::after{transform:rotate(180deg)}
.accordion-content{
  padding:0 22px 20px;
  font-size:14px;color:var(--text-2);line-height:1.8;
}

/* ===== Contact Form ===== */
.contact{
  position:relative;
  background:var(--bg-deep);
  padding-bottom:120px;
}
.contact-card{
  max-width:1000px;margin:0 auto;
  padding:40px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-xl);
  backdrop-filter:blur(16px);
  position:relative;
  overflow:hidden;
}
.contact-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--primary),var(--accent),var(--gold));
}
.contact-grid{display:grid;grid-template-columns:1.3fr .8fr;gap:36px}
.contact-left .form-title{font-size:20px;margin-bottom:6px}
.contact-left .form-sub{font-size:13px;color:var(--text-3);margin-bottom:26px}
.form-group{margin-bottom:20px}
.form-group label{
  display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;font-weight:600;
}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:14px 16px;
  background:rgba(0,0,0,.25);
  border:1px solid rgba(255,255,255,.15);
  border-radius:var(--radius-sm);
  color:var(--text-1);font-size:14px;
  transition:all .3s var(--ease);
  outline:none;
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(35,213,238,.2);
}
.form-group textarea{min-height:90px;resize:vertical}
.form-group select{
  appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239CACCC' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 16px center;
  cursor:pointer;
}
.form-group select option{background:var(--bg-elevated);color:var(--text-1)}
.btn-submit{width:100%;margin-top:8px}
.contact-trust{
  font-size:12px;color:var(--text-3);text-align:center;
  margin-top:14px;display:flex;align-items:center;justify-content:center;gap:6px;
}
.contact-trust i{color:var(--green);font-size:12px}
.contact-right{
  display:flex;flex-direction:column;gap:18px;
}
.contact-info-item{
  padding:18px 20px;
  border-radius:14px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--glass-border);
  display:flex;gap:14px;align-items:flex-start;
}
.contact-info-item i{
  font-size:20px;color:var(--accent);
  margin-top:2px;width:28px;text-align:center;
}
.contact-info-item .ci-label{font-size:12px;color:var(--text-3);margin-bottom:4px}
.contact-info-item .ci-value{font-size:15px;color:var(--text-1);font-weight:600}
.contact-hours{
  padding:18px 20px;border-radius:14px;
  background:rgba(216,169,74,.08);
  border:1px solid rgba(216,169,74,.25);
  display:flex;gap:14px;align-items:flex-start;
}
.contact-hours i{font-size:20px;color:var(--gold);margin-top:2px;width:28px;text-align:center}
.contact-hours .ci-label{font-size:12px;color:var(--text-3);margin-bottom:4px}
.contact-hours .ci-value{font-size:15px;color:var(--gold);font-weight:700}

/* ===== Footer ===== */
.site-footer{
  position:relative;
  background:var(--bg-deep);
  border-top:1px solid rgba(255,255,255,.06);
  padding-top:70px;
}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:50px;
}
.footer-brand .logo{font-size:20px;margin-bottom:14px}
.footer-brand p{font-size:13px;color:var(--text-3);line-height:1.7;max-width:280px}
.footer-links h4{
  font-size:14px;color:var(--text-1);font-weight:700;
  margin-bottom:18px;letter-spacing:1px;
}
.footer-links ul{margin:0;padding:0;list-style:none}
.footer-links ul li{margin-bottom:10px}
.footer-links ul a{
  font-size:13px;color:var(--text-2);transition:all .3s;
  display:inline-flex;align-items:center;gap:6px;
}
.footer-links ul a::before{content:'›';color:var(--primary);font-size:15px;line-height:1}
.footer-links ul a:hover{color:var(--accent);padding-left:4px}
.footer-contact p{font-size:13px;color:var(--text-2);display:flex;align-items:center;gap:10px;margin-bottom:12px}
.footer-contact p i{color:var(--accent);width:18px;font-size:14px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);
  padding:20px 0;text-align:center;
  background:rgba(0,0,0,.3);
}
.footer-bottom p{font-size:13px;color:var(--text-3)}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--accent)}

/* ===== Floating CTA ===== */
.float-cta{
  position:fixed;bottom:24px;right:24px;z-index:900;
  display:flex;flex-direction:column;gap:12px;
}
.float-cta a{
  width:50px;height:50px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;color:#fff;
  box-shadow:0 8px 24px rgba(0,0,0,.4);
  transition:all .3s var(--ease);
}
.float-cta a:hover{transform:scale(1.1)}
.float-cta .fc-phone{background:linear-gradient(135deg,var(--primary),#1a4fdb)}
.float-cta .fc-top{background:rgba(255,255,255,.12);border:1px solid var(--glass-border);backdrop-filter:blur(8px)}
.float-cta .fc-top:hover{background:rgba(255,255,255,.2)}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);border:0;
}
:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}

/* ===== Responsive ===== */
@media (max-width:1023px){
  .hero-container{flex-direction:column;gap:40px}
  .hero-content{max-width:100%}
  .hero-visual{max-width:100%;width:100%}
  .hero-card{transform:none}
  .metrics-grid{grid-template-columns:repeat(2,1fr)}
  .services-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .compare-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:70px 0}
}
@media (max-width:639px){
  .nav-menu{
    position:fixed;top:72px;left:0;right:0;background:rgba(7,12,24,.97);
    flex-direction:column;padding:20px;border-bottom:1px solid rgba(255,255,255,.08);
    backdrop-filter:blur(20px);
    display:none;align-items:stretch;
  }
  .nav-menu.open{display:flex}
  .nav-link{justify-content:flex-start;padding:14px 16px;font-size:16px}
  .dropdown-panel{
    position:static;transform:none;opacity:1;visibility:visible;
    width:auto;background:rgba(255,255,255,.05);margin:4px 0 10px;
    box-shadow:none;border-color:rgba(255,255,255,.06);
  }
  .dropdown-panel::before{display:none}
  .dropdown-grid{flex-direction:column}
  .menu-toggle{display:block}
  .nav-cta{display:none}
  .hero{padding:70px 0 60px}
  .hero h1{font-size:30px}
  .hero-desc{font-size:15px}
  .hero-stats{gap:20px}
  .hero-stat-item .hero-stat-num{font-size:28px}
  .metrics-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .metric-card{padding:20px 16px}
  .metric-card .metric-num{font-size:32px}
  .services-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .section{padding:56px 0}
  h1{font-size:28px}
  h2{font-size:24px}
  .contact-card{padding:24px 18px}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .compare-box,.compare-box-vs{padding:20px}
  .compare-row{flex-direction:column;align-items:flex-start;gap:4px}
  .compare-dim{width:auto}
  .compare-val{text-align:left}
  .float-cta{bottom:16px;right:16px}
  .float-cta a{width:44px;height:44px}
}

/* roulang page: article */
:root{
  --primary:#2E6BFF;
  --accent:#23D5EE;
  --gold:#D8A94A;
  --bg-deep:#070C18;
  --bg-main:#0C1428;
  --bg-elevated:#111C36;
  --text-1:#EAF0FB;
  --text-2:#9CACCC;
  --text-3:#60708F;
  --green:#38D39F;
  --danger:#FF6B7A;
  --glass-bg:rgba(255,255,255,.05);
  --glass-bg-strong:rgba(255,255,255,.08);
  --glass-border:rgba(255,255,255,.12);
  --radius-xl:20px;
  --radius-lg:18px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-card:0 8px 32px rgba(0,0,0,.35);
  --shadow-primary:0 0 20px rgba(46,107,255,.45);
  --shadow-accent:0 0 20px rgba(35,213,238,.35);
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',sans-serif;
  --font-num:'DIN Alternate','Bahnschrift',system-ui,sans-serif;
  --ease:cubic-bezier(.25,.8,.25,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-cn);
  background:var(--bg-main);
  color:var(--text-1);
  font-size:15px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:'';position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(600px 400px at 85% 10%,rgba(35,213,238,.08),transparent 70%),
    radial-gradient(700px 500px at 10% 60%,rgba(46,107,255,.08),transparent 70%),
    radial-gradient(500px 300px at 70% 85%,rgba(216,169,74,.05),transparent 70%),
    var(--bg-main);
}
body::after{
  content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:linear-gradient(rgba(35,213,238,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(35,213,238,.025) 1px,transparent 1px);
  background-size:64px 64px;
}
a{color:var(--accent);text-decoration:none;transition:color .3s var(--ease)}
a:hover{color:#fff}
img{max-width:100%;display:block;object-fit:cover}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 20px;width:100%}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:999px;
  font-size:13px;font-weight:600;
  background:rgba(46,107,255,.15);
  border:1px solid rgba(46,107,255,.35);
  color:var(--accent);
  letter-spacing:.3px;
}
.badge-gold{
  background:rgba(216,169,74,.12);
  border-color:rgba(216,169,74,.4);
  color:var(--gold);
}
.glass-card{
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-lg);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow-card);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.glass-card:hover{
  transform:translateY(-4px);
  border-color:rgba(35,213,238,.3);
  box-shadow:0 12px 40px rgba(0,0,0,.45),0 0 24px rgba(35,213,238,.18);
}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 30px;border-radius:var(--radius-md);
  font-size:15px;font-weight:700;letter-spacing:.4px;
  border:1px solid transparent;transition:all .3s var(--ease);
  min-height:44px;line-height:1;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),#1a4fdb);
  color:#fff;
  box-shadow:var(--shadow-primary);
  border-color:rgba(46,107,255,.5);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 0 32px rgba(46,107,255,.65);
  color:#fff;
}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:rgba(255,255,255,.06);
  border-color:var(--glass-border);
  color:var(--text-1);
  backdrop-filter:blur(8px);
}
.btn-ghost:hover{
  background:rgba(255,255,255,.12);
  border-color:var(--accent);
  color:var(--accent);
  transform:translateY(-2px);
}
.btn-sm{padding:10px 20px;font-size:14px;border-radius:10px;min-height:40px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--accent);font-weight:600;font-size:14px;
  transition:gap .3s var(--ease);
}
.text-link:hover{gap:10px;color:#fff}

/* ===== Header & Nav ===== */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(7,12,24,.82);
  backdrop-filter:blur(16px) saturate(160%);
  -webkit-backdrop-filter:blur(16px) saturate(160%);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.nav-container{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;max-width:1280px;margin:0 auto;padding:0 20px;
}
.logo{
  font-size:17px;font-weight:800;color:var(--text-1);letter-spacing:.4px;
  display:flex;align-items:center;gap:8px;flex-shrink:0;
}
.logo i{color:var(--accent);font-size:20px}
.logo:hover{color:var(--accent)}
.nav-toggle{
  display:none;
  background:rgba(255,255,255,.06);
  border:1px solid var(--glass-border);
  color:var(--text-1);
  font-size:20px;
  width:44px;height:44px;border-radius:10px;
  align-items:center;justify-content:center;
  transition:all .3s var(--ease);
}
.nav-toggle:hover{background:rgba(255,255,255,.12);color:var(--accent)}
.nav-menu{
  display:flex;align-items:center;gap:4px;margin:0;padding:0;list-style:none;
}
.nav-item{position:relative;margin:0}
.nav-link{
  display:flex;align-items:center;gap:6px;
  padding:12px 16px;color:var(--text-2);
  font-size:14px;font-weight:600;border-radius:10px;
  transition:all .25s var(--ease);
}
.nav-link i{font-size:12px;color:var(--text-3);transition:transform .3s}
.nav-link:hover,.nav-link.active{color:#fff;background:rgba(255,255,255,.08)}
.nav-item.dropdown:hover .nav-link i{transform:rotate(180deg)}
.nav-cta{margin-left:10px}
.nav-cta .btn{padding:10px 22px;font-size:14px;min-height:40px}
.dropdown-panel{
  position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%) translateY(8px);
  min-width:460px;
  background:rgba(17,28,54,.92);
  backdrop-filter:blur(20px) saturate(160%);
  -webkit-backdrop-filter:blur(20px) saturate(160%);
  border:1px solid var(--glass-border);
  border-radius:16px;
  box-shadow:0 20px 60px rgba(0,0,0,.5);
  padding:20px;
  opacity:0;visibility:hidden;
  transition:all .3s var(--ease);
  z-index:1200;
}
.nav-item.dropdown:hover .dropdown-panel,
.nav-item.dropdown:focus-within .dropdown-panel{
  opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);
}
.dropdown-grid{display:flex;gap:20px}
.dropdown-col{flex:1}
.dropdown-col h4{
  font-size:12px;color:var(--text-3);
  letter-spacing:2px;text-transform:uppercase;
  margin-bottom:12px;font-weight:700;
}
.dropdown-menu a{
  display:block;padding:7px 8px;border-radius:8px;
  color:var(--text-2);font-size:14px;
  transition:all .2s var(--ease);
}
.dropdown-menu a:hover{background:rgba(46,107,255,.15);color:var(--accent);padding-left:12px}

/* ===== Article Page ===== */
.article-banner{
  position:relative;
  background:linear-gradient(135deg,rgba(7,12,24,.9),rgba(17,28,54,.85)),url('/assets/images/backpic/back-2.webp') center/cover;
  padding:36px 0 28px;
  border-bottom:1px solid rgba(255,255,255,.06);
  overflow:hidden;
}
.article-banner::after{
  content:'';position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(500px 220px at 80% 0,rgba(35,213,238,.1),transparent 70%);
}
.article-banner .container{position:relative;z-index:1}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--text-3);
  margin-bottom:10px;
}
.breadcrumb a{color:var(--text-2);transition:color .3s}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb i{font-size:10px;color:var(--text-3)}
.breadcrumb span{color:var(--text-1)}
.banner-title{
  font-size:26px;font-weight:800;color:var(--text-1);
  line-height:1.3;margin:6px 0 0;
  max-width:920px;
}
.article-wrap{
  display:grid;
  grid-template-columns:minmax(0,760px) 320px;
  justify-content:center;
  gap:44px;
  padding:44px 0 80px;
}
.article-main{
  min-width:0;
  max-width:780px;
}
.article-card{
  padding:36px 38px;
  border-radius:var(--radius-xl);
}
.article-header{
  margin-bottom:26px;
  border-bottom:1px solid rgba(255,255,255,.08);
  padding-bottom:24px;
}
.article-header .badge{margin-bottom:12px}
.article-title{
  font-size:30px;font-weight:800;line-height:1.3;
  color:var(--text-1);
  margin:10px 0 14px;
  letter-spacing:.2px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:16px;
  color:var(--text-3);font-size:13px;
}
.article-meta i{margin-right:4px;color:var(--text-3)}
.article-excerpt{
  margin-top:16px;
  color:var(--text-2);
  font-size:15px;line-height:1.85;
  padding:14px 18px;
  border-left:3px solid var(--primary);
  background:rgba(46,107,255,.06);
  border-radius:0 10px 10px 0;
}
.article-cover{
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--glass-border);
  margin:0 0 28px;
  position:relative;
}
.article-cover img{
  width:100%;height:auto;max-height:420px;
  object-fit:cover;object-position:center;
}
.article-cover::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 60%,rgba(7,12,24,.35));
  pointer-events:none;
}
.article-content{
  color:var(--text-1);
  font-size:15.5px;line-height:1.9;
  word-wrap:break-word;
  overflow-wrap:break-word;
}
.article-content p{margin:0 0 18px;color:var(--text-2)}
.article-content h2{
  font-size:23px;font-weight:800;color:var(--text-1);
  margin:34px 0 14px;
  padding-left:14px;
  border-left:4px solid var(--primary);
  line-height:1.4;
}
.article-content h3{
  font-size:19px;font-weight:700;color:var(--text-1);
  margin:26px 0 12px;line-height:1.4;
}
.article-content h4{
  font-size:16px;font-weight:700;color:var(--accent);
  margin:20px 0 10px;
}
.article-content ul,.article-content ol{
  margin:0 0 18px;padding-left:22px;color:var(--text-2);
}
.article-content li{margin-bottom:8px}
.article-content img{
  border-radius:16px;
  border:1px solid var(--glass-border);
  margin:12px 0 20px;
  box-shadow:var(--shadow-card);
}
.article-content blockquote{
  margin:20px 0;padding:16px 20px;
  border-left:4px solid var(--gold);
  background:rgba(216,169,74,.07);
  border-radius:0 12px 12px 0;
  color:var(--text-2);
  font-style:normal;
}
.article-content blockquote p{margin:0;color:var(--text-2)}
.article-content a{
  color:var(--accent);
  border-bottom:1px solid rgba(35,213,238,.3);
  font-weight:600;
}
.article-content a:hover{color:#fff;border-bottom-color:#fff}
.article-content code{
  font-family:'SF Mono',Consolas,monospace;
  background:rgba(255,255,255,.08);
  padding:2px 8px;border-radius:6px;
  font-size:14px;color:var(--accent);
}
.article-content table{
  width:100%;border-collapse:collapse;margin:0 0 20px;
  font-size:14px;
}
.article-content th{
  background:rgba(46,107,255,.12);color:var(--text-1);
  padding:12px 14px;text-align:left;font-weight:700;
  border:1px solid rgba(255,255,255,.08);
}
.article-content td{
  padding:10px 14px;border:1px solid rgba(255,255,255,.08);
  color:var(--text-2);
}
.article-content tr:nth-child(even) td{background:rgba(255,255,255,.03)}

.article-tags{
  margin:28px 0 0;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
}
.article-tags .badge{font-size:12px;padding:4px 12px}

.article-nav{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
  margin-top:30px;
}
.article-nav a{
  display:flex;flex-direction:column;gap:4px;
  padding:16px 18px;
  border-radius:var(--radius-md);
  background:rgba(255,255,255,.04);
  border:1px solid var(--glass-border);
  font-size:13px;color:var(--text-3);
  transition:all .3s var(--ease);
}
.article-nav a:hover{
  border-color:var(--accent);
  background:rgba(35,213,238,.08);
  color:var(--text-1);
}
.article-nav a.next{text-align:right}
.article-nav a span{font-size:14px;font-weight:600;color:var(--text-1);transition:color .3s}
.article-nav a:hover span{color:var(--accent)}

/* ===== Sidebar ===== */
.article-sidebar{
  display:flex;flex-direction:column;gap:24px;
  min-width:0;
}
.sidebar-card{
  padding:24px;
  border-radius:var(--radius-lg);
}
.sidebar-card h4{
  font-size:15px;font-weight:700;color:var(--text-1);
  margin-bottom:16px;
  display:flex;align-items:center;gap:8px;
}
.sidebar-card h4::before{
  content:'';width:4px;height:18px;border-radius:4px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
}
.sidebar-menu{list-style:none;margin:0;padding:0}
.sidebar-menu li{margin-bottom:6px}
.sidebar-menu a{
  display:flex;align-items:center;gap:8px;
  padding:9px 12px;border-radius:9px;
  color:var(--text-2);font-size:14px;
  transition:all .25s var(--ease);
}
.sidebar-menu a i{font-size:11px;color:var(--primary)}
.sidebar-menu a:hover{
  background:rgba(46,107,255,.12);
  color:var(--accent);
  padding-left:16px;
}
.sidebar-stats{
  display:grid;grid-template-columns:1fr 1fr;gap:12px;
  margin-top:4px;
}
.sidebar-stat{
  text-align:center;
  padding:14px 8px;
  border-radius:var(--radius-md);
  background:rgba(255,255,255,.04);
  border:1px solid var(--glass-border);
}
.sidebar-stat b{
  display:block;
  font-family:var(--font-num);
  font-size:28px;font-weight:700;
  color:var(--accent);
  line-height:1.2;
}
.sidebar-stat span{font-size:12px;color:var(--text-3)}
.related-card{
  display:flex;align-items:center;gap:14px;
  padding:10px;border-radius:12px;
  transition:all .25s var(--ease);
  margin-bottom:6px;
}
.related-card:hover{background:rgba(35,213,238,.07)}
.related-card img{
  width:86px;height:60px;border-radius:9px;
  border:1px solid var(--glass-border);
  flex-shrink:0;
}
.related-card h5{
  font-size:14px;font-weight:600;color:var(--text-1);
  line-height:1.45;margin-bottom:4px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-card span{font-size:12px;color:var(--text-3)}
.contact-card{
  background:linear-gradient(135deg,rgba(46,107,255,.15),rgba(35,213,238,.08));
  border-color:rgba(46,107,255,.3);
  text-align:center;
}
.contact-card i{
  font-size:32px;color:var(--accent);
  margin-bottom:10px;
}
.contact-card h5{font-size:17px;font-weight:800;margin-bottom:6px;color:var(--text-1)}
.contact-card p{font-size:13px;color:var(--text-2);margin-bottom:14px;line-height:1.6}
.contact-card .btn{width:100%}

/* ===== Not Found ===== */
.not-found-wrap{
  padding:100px 20px 120px;
  display:flex;justify-content:center;
}
.not-found-card{
  text-align:center;
  padding:56px 44px;
  max-width:520px;
}
.not-found-card i{
  font-size:56px;color:var(--accent);
  margin-bottom:20px;display:inline-block;
  text-shadow:0 0 30px rgba(35,213,238,.4);
}
.not-found-card h1{
  font-size:28px;font-weight:800;margin-bottom:10px;
}
.not-found-card p{color:var(--text-2);margin-bottom:24px}

/* ===== Footer ===== */
.site-footer{
  background:rgba(7,12,24,.9);
  border-top:1px solid rgba(255,255,255,.06);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.4fr;
  gap:40px;
  padding:56px 0 40px;
}
.footer-brand .logo{
  font-size:17px;font-weight:800;color:var(--text-1);
  display:flex;align-items:center;gap:8px;margin-bottom:14px;
}
.footer-brand .logo i{color:var(--accent)}
.footer-brand p{
  color:var(--text-3);font-size:14px;line-height:1.8;
  max-width:360px;
}
.footer-links h4,.footer-contact h4{
  font-size:14px;font-weight:700;color:var(--text-1);
  margin-bottom:16px;letter-spacing:1px;
}
.footer-links ul,.footer-contact ul{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:9px}
.footer-links a{
  color:var(--text-2);font-size:14px;
  transition:all .25s var(--ease);
  display:inline-flex;align-items:center;gap:6px;
}
.footer-links a::before{
  content:'';width:4px;height:4px;border-radius:50%;
  background:var(--primary);
  transition:width .25s;
}
.footer-links a:hover{color:var(--accent);padding-left:4px}
.footer-links a:hover::before{width:8px}
.footer-contact p{
  display:flex;align-items:center;gap:10px;
  color:var(--text-2);font-size:14px;
  margin-bottom:10px;
}
.footer-contact p i{
  color:var(--accent);width:18px;text-align:center;
  font-size:15px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);
  padding:20px 0;
  text-align:center;
}
.footer-bottom p{
  color:var(--text-3);font-size:13px;
  margin:0;
}

/* ===== Responsive ===== */
@media (max-width:1023px){
  .article-wrap{grid-template-columns:1fr;padding:32px 0 60px}
  .article-sidebar{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .dropdown-panel{
    min-width:340px;
  }
}
@media (max-width:639px){
  .nav-toggle{display:flex}
  .site-header{position:sticky}
  .nav-container{height:auto;padding:14px 20px;flex-wrap:wrap;gap:10px}
  .nav-menu{
    display:none;flex-direction:column;
    width:100%;background:rgba(7,12,24,.96);
    border-radius:16px;
    padding:14px;
    margin-top:6px;
    border:1px solid var(--glass-border);
    gap:2px;
  }
  .nav-menu.nav-open{display:flex}
  .nav-item{width:100%}
  .nav-link{width:100%;justify-content:space-between}
  .dropdown-panel{
    position:static;transform:none;
    opacity:1;visibility:visible;
    min-width:0;width:100%;
    margin:6px 0 10px;
    box-shadow:none;
    background:rgba(255,255,255,.03);
  }
  .nav-item.dropdown:hover .dropdown-panel,
  .nav-item.dropdown:focus-within .dropdown-panel{
    transform:none;
  }
  .dropdown-grid{flex-direction:column;gap:16px}
  .nav-cta{margin-left:0;width:100%;margin-top:8px}
  .nav-cta .btn{width:100%}
  .article-banner{padding:28px 0 20px}
  .banner-title{font-size:20px}
  .article-card{padding:24px 20px;border-radius:16px}
  .article-title{font-size:23px}
  .article-meta{flex-direction:column;align-items:flex-start;gap:6px}
  .article-excerpt{font-size:14px}
  .article-content{font-size:15px}
  .article-content h2{font-size:20px}
  .article-content h3{font-size:17px}
  .article-nav{grid-template-columns:1fr}
  .article-nav a.next{text-align:left}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:40px 0 28px}
  .footer-contact p{font-size:14px}
  .not-found-wrap{padding:60px 20px 80px}
  .not-found-card{padding:36px 24px}
}
@media (max-width:520px){
  .container,.nav-container{padding-left:16px;padding-right:16px}
  .article-card{padding:20px 16px}
  .article-title{font-size:20px}
  .article-content{font-size:14.5px}
  .article-content table{font-size:12.5px}
  .article-content th,.article-content td{padding:8px 8px}
}
a:focus-visible,.btn:focus-visible,.nav-link:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  border-radius:8px;
}