:root{
  --color-night:#0a1628;
  --color-deep:#0e1e36;
  --color-royal:#132a4d;
  --color-cyan:#00d4ff;
  --color-violet:#7b61ff;
  --color-gold:#f5b942;
  --color-mist:#e2e8f0;
  --color-text:#d3dce6;
  --color-muted:#8b9bb4;
  --color-border:rgba(255,255,255,0.08);
  --bg-body:#0a1628;
  --radius-lg:1.25rem;
  --radius-md:0.85rem;
  --radius-sm:0.5rem;
  --shadow-card:0 15px 40px rgba(0,0,0,0.25);
  --shadow-glow:0 0 30px rgba(0,212,255,0.35);
  --transition:all 0.25s ease;
  --font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg-body);color:var(--color-text);font-family:var(--font-sans);line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none}
a:hover{color:var(--color-cyan)}
img{display:block;max-width:100%;height:auto}
button,input,select,textarea{font-family:inherit;font-size:inherit}
.container-custom{width:100%;max-width:1280px;margin:0 auto;padding:0 1.5rem}
.section-padding{padding:5rem 0}
.text-brand-cyan{color:var(--color-cyan)}
.text-brand-violet{color:var(--color-violet)}
.text-brand-gold{color:var(--color-gold)}
.bg-brand-deep{background:var(--color-deep)}
.bg-brand-royal{background:var(--color-royal)}

/* ===== 玻璃拟态 ===== */
.glass-card{
  background:rgba(19,42,77,0.45);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--color-border);
  border-radius:var(--radius-lg);
  transition:var(--transition);
}
.glass-card:hover{
  border-color:rgba(0,212,255,0.3);
  box-shadow:var(--shadow-card);
  transform:translateY(-4px);
}

/* ===== 发光按钮 ===== */
.btn-glow{
  display:inline-flex;align-items:center;gap:.5rem;
  background:linear-gradient(135deg,var(--color-cyan),#37b9ff);
  color:#06233a;font-weight:600;padding:.7rem 1.6rem;border-radius:999px;
  box-shadow:var(--shadow-glow);transition:var(--transition);
  border:none;cursor:pointer;white-space:nowrap;
}
.btn-glow:hover{
  transform:translateY(-2px);
  box-shadow:0 0 45px rgba(0,212,255,0.55);
  color:#06233a;
}
.btn-ghost{
  display:inline-flex;align-items:center;gap:.5rem;
  background:rgba(255,255,255,0.06);color:var(--color-mist);
  padding:.7rem 1.6rem;border-radius:999px;border:1px solid var(--color-border);
  transition:var(--transition);cursor:pointer;white-space:nowrap;
}
.btn-ghost:hover{
  border-color:rgba(0,212,255,0.4);color:var(--color-cyan);background:rgba(0,212,255,0.05);
}
.btn-gold{
  display:inline-flex;align-items:center;gap:.5rem;
  background:linear-gradient(135deg,var(--color-gold),#ffd36b);
  color:#4a2e00;font-weight:600;padding:.7rem 1.6rem;border-radius:999px;
  box-shadow:0 0 25px rgba(245,185,66,0.3);transition:var(--transition);
  border:none;cursor:pointer;white-space:nowrap;
}
.btn-gold:hover{
  transform:translateY(-2px);color:#4a2e00;
  box-shadow:0 0 40px rgba(245,185,66,0.5);
}

/* ===== 导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(10,22,40,0.75);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(255,255,255,0.06);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px;gap:1rem}
.nav-logo{
  display:flex;align-items:center;gap:.6rem;
  font-weight:700;font-size:1.05rem;color:#fff;letter-spacing:.5px;
}
.nav-logo .logo-badge{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(135deg,var(--color-cyan),var(--color-violet));
  display:flex;align-items:center;justify-content:center;font-size:1rem;color:#fff;flex-shrink:0;
}
.nav-center{display:flex;align-items:center;gap:1.8rem;list-style:none}
.nav-center .nav-link{
  color:var(--color-muted);font-size:.92rem;font-weight:500;
  transition:var(--transition);padding:.3rem 0;position:relative;
}
.nav-center .nav-link:hover{color:#fff}
.nav-center .nav-link::after{
  content:"";position:absolute;bottom:-2px;left:0;width:0;height:2px;
  background:var(--color-cyan);border-radius:2px;transition:width .3s ease;
}
.nav-center .nav-link:hover::after{width:100%}
.nav-right{display:flex;align-items:center;gap:1rem}
.nav-status{
  display:flex;align-items:center;gap:.45rem;color:var(--color-muted);font-size:.82rem;
}
.nav-status .status-dot{
  width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 10px #22c55e;
  animation:pulse 2s infinite;
}
@keyframes pulse{
  0%,100%{opacity:1}
  50%{opacity:.4}
}
.mobile-toggle{display:none;background:none;border:1px solid var(--color-border);border-radius:8px;color:#fff;padding:.5rem .8rem;cursor:pointer;font-size:1rem;transition:var(--transition)}
.mobile-toggle:hover{border-color:var(--color-cyan)}
.mobile-menu{
  display:none;background:rgba(10,22,40,0.96);padding:1.2rem 1.5rem;
  border-top:1px solid rgba(255,255,255,0.06);
}
.mobile-menu a{
  display:block;padding:.7rem .4rem;color:var(--color-muted);border-bottom:1px solid rgba(255,255,255,0.04);
}
.mobile-menu a:last-child{border-bottom:none}
.mobile-menu a:hover{color:var(--color-cyan)}

/* ===== Hero ===== */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  background:linear-gradient(135deg,rgba(10,22,40,0.72),rgba(10,22,40,0.92)),
    url('/assets/images/backpic/back-1.jpg') center center / cover no-repeat;
  padding:7rem 0 5rem;
}
.hero::after{
  content:"";position:absolute;bottom:0;left:0;right:0;height:160px;
  background:linear-gradient(transparent,var(--bg-body));
  pointer-events:none;
}
.hero-content{position:relative;z-index:2;max-width:860px}
.hero-content h1{font-size:2.7rem;line-height:1.28;color:#fff;font-weight:800;letter-spacing:.5px}
.hero-content .hero-sub{margin-top:1.4rem;font-size:1.05rem;color:var(--color-muted);max-width:640px;line-height:1.8}
.hero-ctas{display:flex;flex-wrap:wrap;gap:1rem;margin-top:2rem}
.hero-data{display:flex;flex-wrap:wrap;gap:2.2rem;margin-top:2.6rem}
.hero-data-item{display:flex;flex-direction:column}
.hero-data-item .num{font-size:1.6rem;font-weight:800;color:#fff;line-height:1.2;background:linear-gradient(135deg,var(--color-cyan),var(--color-violet));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-data-item .label{font-size:.85rem;color:var(--color-muted)}
.hero-tabs{
  margin-top:3rem;display:flex;flex-wrap:wrap;gap:.7rem;
  background:rgba(255,255,255,0.05);border:1px solid var(--color-border);
  border-radius:16px;padding:1rem 1.2rem;backdrop-filter:blur(10px);
  max-width:720px;
}
.hero-tabs a{
  display:inline-flex;align-items:center;gap:.5rem;
  background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.08);
  color:var(--color-mist);font-size:.9rem;font-weight:500;
  padding:.5rem 1.1rem;border-radius:999px;transition:var(--transition);
}
.hero-tabs a:hover{background:rgba(0,212,255,0.12);border-color:rgba(0,212,255,0.4);color:#fff}
.hero-tabs a i{color:var(--color-cyan)}

/* ===== 数据指标 ===== */
.stats-section{
  position:relative;z-index:3;margin-top:-1rem;
}
.stat-card{
  background:linear-gradient(160deg,rgba(19,42,77,0.6),rgba(14,30,54,0.6));
  border:1px solid var(--color-border);border-radius:var(--radius-lg);
  padding:1.8rem 1.2rem;text-align:center;backdrop-filter:blur(12px);
  transition:var(--transition);
}
.stat-card:hover{border-color:rgba(0,212,255,0.35);box-shadow:var(--shadow-card)}
.stat-card .icon{font-size:1.8rem;margin-bottom:.6rem}
.stat-card .value{font-size:2.1rem;font-weight:800;color:#fff;line-height:1.2}
.stat-card .label{font-size:.9rem;color:var(--color-muted);margin-top:.35rem}

/* ===== 板块标题 ===== */
.section-head{max-width:720px;margin-bottom:3rem}
.section-head .tag{
  display:inline-flex;align-items:center;gap:.5rem;
  background:rgba(0,212,255,0.1);color:var(--color-cyan);
  font-size:.8rem;font-weight:600;padding:.35rem 1rem;border-radius:999px;
  border:1px solid rgba(0,212,255,0.2);margin-bottom:1rem;
}
.section-head h2{font-size:2rem;color:#fff;font-weight:800;line-height:1.3}
.section-head p{margin-top:.8rem;color:var(--color-muted);font-size:.98rem;line-height:1.75}

/* ===== 服务矩阵 ===== */
.service-card{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--color-border);background:var(--color-deep);
  transition:var(--transition);height:100%;
}
.service-card:hover{border-color:rgba(0,212,255,0.3);box-shadow:var(--shadow-card);transform:translateY(-4px)}
.service-card .thumb{height:170px;overflow:hidden;position:relative}
.service-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.service-card:hover .thumb img{transform:scale(1.06)}
.service-card .thumb::after{
  content:"";position:absolute;inset:0;background:linear-gradient(transparent,rgba(10,22,40,0.75));
}
.service-card .body{padding:1.3rem 1.4rem 1.5rem}
.service-card .body h3{font-size:1.15rem;color:#fff;font-weight:700;margin-bottom:.45rem}
.service-card .body p{font-size:.9rem;color:var(--color-muted);line-height:1.65}
.service-card .tag-row{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.85rem}
.service-card .mini-tag{
  font-size:.75rem;color:var(--color-cyan);background:rgba(0,212,255,0.08);
  padding:.15rem .6rem;border-radius:999px;border:1px solid rgba(0,212,255,0.15);
}

/* ===== 优惠阶梯 ===== */
.promo-card{
  background:linear-gradient(150deg,rgba(19,42,77,0.55),rgba(14,30,54,0.7));
  border:1px solid var(--color-border);border-radius:var(--radius-lg);
  padding:1.8rem 1.6rem;transition:var(--transition);position:relative;overflow:hidden;
}
.promo-card::before{
  content:"";position:absolute;top:-40px;right:-40px;width:120px;height:120px;
  border-radius:50%;background:rgba(0,212,255,0.08);pointer-events:none;
}
.promo-card:hover{border-color:rgba(0,212,255,0.3);box-shadow:var(--shadow-card);transform:translateY(-3px)}
.promo-card .icon{font-size:1.6rem;color:var(--color-cyan);margin-bottom:.8rem}
.promo-card h3{color:#fff;font-size:1.15rem;font-weight:700}
.promo-card .desc{font-size:.9rem;color:var(--color-muted);margin-top:.5rem;line-height:1.7}
.promo-card .promo-value{
  font-size:1.35rem;font-weight:800;margin-top:1rem;
  background:linear-gradient(135deg,var(--color-gold),#ffd36b);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}

/* ===== 套餐对比 ===== */
.package-card{
  position:relative;background:var(--color-deep);border:1px solid var(--color-border);
  border-radius:1.5rem;padding:2rem 1.8rem;transition:var(--transition);display:flex;flex-direction:column;
}
.package-card:hover{border-color:rgba(0,212,255,0.3);box-shadow:var(--shadow-card)}
.package-popular{
  border-color:rgba(0,212,255,0.45);background:linear-gradient(160deg,rgba(0,212,255,0.1),rgba(19,42,77,0.7));
  box-shadow:0 0 40px rgba(0,212,255,0.12);
}
.package-popular .badge-popular{
  position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  background:linear-gradient(135deg,var(--color-cyan),var(--color-violet));
  color:#fff;font-size:.75rem;font-weight:700;padding:.25rem 1rem;border-radius:999px;
  box-shadow:var(--shadow-glow);white-space:nowrap;
}
.package-card .price{font-size:2rem;font-weight:800;color:#fff;margin:1px 0}
.package-card .price small{font-size:1rem;font-weight:500;color:var(--color-muted)}
.package-card h3{font-size:1.3rem;color:#fff;font-weight:700}
.package-card .features{list-style:none;margin-top:1.2rem;flex:1}
.package-card .features li{
  display:flex;align-items:flex-start;gap:.6rem;padding:.4rem 0;
  font-size:.9rem;color:var(--color-muted);line-height:1.5;
}
.package-card .features li i{color:var(--color-cyan);margin-top:.2rem;font-size:.8rem}
.package-card .pkg-btn{margin-top:1.5rem;width:100%}

/* ===== 保障条 ===== */
.guarantee-section{
  background:linear-gradient(135deg,rgba(19,42,77,0.55),rgba(10,22,40,0.85)),
    url('/assets/images/backpic/back-2.jpg') center center / cover no-repeat fixed;
}
.guarantee-item{
  display:flex;align-items:flex-start;gap:1rem;
  background:rgba(255,255,255,0.04);border:1px solid var(--color-border);
  border-radius:var(--radius-lg);padding:1.5rem 1.2rem;transition:var(--transition);
  backdrop-filter:blur(6px);
}
.guarantee-item:hover{border-color:rgba(0,212,255,0.3);background:rgba(0,212,255,0.04)}
.guarantee-item .icon{
  width:44px;height:44px;flex-shrink:0;border-radius:12px;
  background:rgba(0,212,255,0.12);display:flex;align-items:center;justify-content:center;
  color:var(--color-cyan);font-size:1.1rem;border:1px solid rgba(0,212,255,0.2);
}
.guarantee-item h3{font-size:1rem;color:#fff;font-weight:700}
.guarantee-item p{font-size:.88rem;color:var(--color-muted);margin-top:.3rem;line-height:1.65}

/* ===== 资讯区 ===== */
.news-card{
  background:var(--color-deep);border:1px solid var(--color-border);
  border-radius:var(--radius-lg);padding:2rem;transition:var(--transition);
}
.news-card:hover{border-color:rgba(0,212,255,0.25)}
.news-list{list-style:none;margin-top:.5rem}
.news-list li{
  display:flex;align-items:flex-start;justify-content:space-between;gap:1rem;
  padding:.85rem 0;border-bottom:1px solid rgba(255,255,255,0.05);
  transition:var(--transition);
}
.news-list li:last-child{border-bottom:none}
.news-list li:hover .news-title{color:var(--color-cyan)}
.news-title{color:var(--color-mist);font-size:.95rem;font-weight:500;transition:var(--transition);line-height:1.5}
.news-date{color:var(--color-muted);font-size:.8rem;white-space:nowrap;margin-top:.15rem}
.side-bar .side-item{
  display:flex;align-items:center;gap:.8rem;padding:.75rem .6rem;
  border-radius:12px;transition:var(--transition);
}
.side-bar .side-item:hover{background:rgba(0,212,255,0.04)}
.side-bar .side-item .rank{
  width:30px;height:30px;border-radius:9px;background:rgba(0,212,255,0.1);
  color:var(--color-cyan);display:flex;align-items:center;justify-content:center;
  font-size:.85rem;font-weight:700;flex-shrink:0;
}
.side-bar .side-item .text{color:var(--color-mist);font-size:.9rem;line-height:1.4}

/* ===== 限时入口 ===== */
.deal-section{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#132a4d,rgba(10,22,40,0.9)),
    url('/assets/images/backpic/back-3.jpg') center center / cover no-repeat;
}
.deal-section::before{
  content:"";position:absolute;top:0;left:0;right:0;bottom:0;
  background:linear-gradient(90deg,rgba(0,212,255,0.05),transparent 60%);
  pointer-events:none;
}
.deal-card{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  background:rgba(255,255,255,0.05);border:1px solid rgba(0,212,255,0.2);
  border-radius:1.5rem;padding:2.2rem 2.4rem;backdrop-filter:blur(10px);
  position:relative;z-index:2;
}
.deal-card .deal-title{font-size:1.6rem;color:#fff;font-weight:800}
.deal-card .deal-desc{color:var(--color-muted);margin-top:.5rem;font-size:.95rem}
.deal-count{
  display:flex;gap:.8rem;margin-top:1.2rem;
}
.deal-count .count-box{
  background:rgba(0,0,0,0.4);border:1px solid rgba(0,212,255,0.2);
  border-radius:12px;padding:.5rem .8rem;text-align:center;min-width:60px;
}
.deal-count .count-box .n{font-size:1.4rem;font-weight:800;color:var(--color-cyan)}
.deal-count .count-box .t{font-size:.7rem;color:var(--color-muted)}

/* ===== FAQ ===== */
.faq-item{
  background:var(--color-deep);border:1px solid var(--color-border);
  border-radius:var(--radius-lg);padding:1.4rem 1.6rem;transition:var(--transition);
}
.faq-item:hover{border-color:rgba(0,212,255,0.2)}
.faq-item h3{
  color:#fff;font-size:1rem;font-weight:700;display:flex;align-items:flex-start;gap:.6rem;
}
.faq-item h3 i{color:var(--color-cyan);margin-top:.2rem;font-size:.9rem}
.faq-item p{color:var(--color-muted);font-size:.92rem;margin-top:.7rem;line-height:1.75;padding-left:1.5rem}

/* ===== 转化表单 ===== */
.contact-form-wrap{
  background:linear-gradient(135deg,rgba(19,42,77,0.7),rgba(10,22,40,0.9)),
    url('/assets/images/backpic/back-2.jpg') center center / cover no-repeat;
  border-radius:1.6rem;padding:2.8rem;border:1px solid var(--color-border);
  backdrop-filter:blur(8px);
}
.form-input{
  width:100%;background:rgba(255,255,255,0.05);border:1px solid var(--color-border);
  border-radius:12px;padding:.8rem 1rem;color:#fff;font-size:.95rem;
  transition:var(--transition);outline:none;
}
.form-input:focus{border-color:rgba(0,212,255,0.5);box-shadow:0 0 0 3px rgba(0,212,255,0.1)}
.form-input::placeholder{color:rgba(139,155,180,0.7)}
select.form-input{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath fill='%238b9bb4' d='M6 8L0 0h12z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 1.2rem center}
select.form-input option{background:var(--color-deep);color:#fff}

/* ===== 页脚 ===== */
.site-footer{
  background:#060e1c;border-top:1px solid var(--color-border);
  padding:3.5rem 0 2rem;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:2.5rem}
.footer-brand p{color:var(--color-muted);font-size:.9rem;margin-top:.8rem;line-height:1.7}
.footer-links h4{color:#fff;font-size:.95rem;font-weight:700;margin-bottom:1rem}
.footer-links a{
  display:block;padding:.35rem 0;color:var(--color-muted);font-size:.9rem;transition:var(--transition);
}
.footer-links a:hover{color:var(--color-cyan);padding-left:.3rem}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.05);margin-top:2.5rem;padding-top:1.5rem;
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;
}
.footer-bottom p{color:var(--color-muted);font-size:.85rem}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .nav-center{display:none}
  .mobile-toggle{display:block}
  .hero-content h1{font-size:2.2rem}
  .section-head h2{font-size:1.7rem}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .section-padding{padding:4rem 0}
  .hero{padding:6.5rem 0 4rem}
  .hero-content h1{font-size:1.8rem}
  .hero-sub{font-size:.95rem!important}
  .hero-tabs{padding:.8rem;gap:.5rem}
  .hero-tabs a{font-size:.8rem;padding:.4rem .8rem}
  .hero-data{gap:1.2rem}
  .hero-data-item .num{font-size:1.3rem}
  .stat-card .value{font-size:1.7rem}
  .deal-card{padding:1.6rem}
  .deal-card .deal-title{font-size:1.3rem}
  .contact-form-wrap{padding:1.8rem}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  .container-custom{padding:0 1rem}
  .hero-content h1{font-size:1.5rem}
  .hero-ctas .btn-glow,.hero-ctas .btn-ghost{width:100%;justify-content:center}
  .nav-logo{font-size:.92rem}
  .nav-right .nav-status{display:none}
  .package-card{padding:1.5rem}
  .guarantee-item{flex-direction:column}
  .news-list li{flex-direction:column;gap:.3rem}
  .news-date{align-self:flex-end}
  .deal-count .count-box{min-width:50px;padding:.4rem .5rem}
  .deal-count .count-box .n{font-size:1.1rem}
}