*{margin:0;padding:0;box-sizing:border-box;font-family:"Segoe UI","Helvetica Neue",Arial,"Microsoft YaHei","微软雅黑","PingFang SC",sans-serif;}
html{scroll-behavior:smooth;}
body{
  background:
    radial-gradient(circle at 15% 0%, rgba(56,189,248,.16), transparent 45%),
    radial-gradient(circle at 85% 10%, rgba(148,163,184,.14), transparent 50%),
    linear-gradient(165deg,#0b1220 0%,#0f172a 40%,#111c31 70%,#0a1018 100%);
  color:#cbd5e1;
  min-height:100vh;
  line-height:1.75;
  letter-spacing:.2px;
}
h1,h2,h3,h4{color:#e2e8f0;font-weight:700;letter-spacing:.5px;}
a{color:#7dd3fc;text-decoration:none;transition:color .25s;}
a:hover{color:#e0f2fe;}
img{max-width:100%;display:block;}

/* ===== Header / Nav ===== */
.site-header{
  position:sticky;top:0;z-index:99;
  backdrop-filter:blur(14px);
  background:linear-gradient(90deg,rgba(15,23,42,.94),rgba(30,41,59,.90),rgba(15,23,42,.94));
  border-bottom:1px solid rgba(148,163,184,.28);
  box-shadow:0 6px 26px rgba(2,6,23,.55);
}
.header-inner{
  max-width:1240px;margin:0 auto;padding:14px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.brand{display:flex;align-items:center;gap:10px;font-size:1.18rem;font-weight:800;
  color:#f1f5f9;letter-spacing:1px;}
.brand-badge{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,#1e293b,#0f172a);
  border:1px solid rgba(125,211,252,.5);
  box-shadow:inset 0 0 12px rgba(56,189,248,.35),0 0 14px rgba(56,189,248,.18);
  font-size:1rem;
}
.nav-links{display:flex;flex-wrap:wrap;gap:6px;}
.nav-links a{
  display:inline-block;padding:7px 14px;border-radius:8px;font-size:.9rem;color:#cbd5e1;
  border:1px solid transparent;transition:all .25s;
}
.nav-links a:hover,.nav-links a.active{
  color:#e0f2fe;border-color:rgba(125,211,252,.55);
  background:linear-gradient(120deg,rgba(56,189,248,.14),rgba(148,163,184,.10));
  box-shadow:0 0 12px rgba(56,189,248,.22);
}

/* ===== Layout ===== */
.wrap{max-width:1240px;margin:0 auto;padding:0 22px 60px;}
section{padding:52px 0 10px;}
.section-head{margin-bottom:26px;}
.section-head h2{font-size:1.5rem;display:flex;align-items:center;gap:10px;}
.section-head h2::before{
  content:"";width:5px;height:24px;border-radius:3px;
  background:linear-gradient(180deg,#7dd3fc,#475569);
  box-shadow:0 0 12px rgba(56,189,248,.6);
}
.section-head p{color:#94a3b8;font-size:.94rem;margin-top:6px;}

/* ===== Card ===== */
.card{
  position:relative;
  background:
    repeating-linear-gradient(115deg,rgba(148,163,184,.05) 0 2px,rgba(148,163,184,0) 2px 6px),
    linear-gradient(150deg,rgba(30,41,59,.92),rgba(15,23,42,.96));
  border:1px solid rgba(148,163,184,.3);
  border-radius:14px;
  padding:22px;
  box-shadow:0 10px 30px rgba(2,6,23,.5),inset 0 1px 0 rgba(226,232,240,.08);
  transition:transform .3s,border-color .3s,box-shadow .3s;
  overflow:hidden;
}
.card::after{
  content:"";position:absolute;top:0;left:0;width:100%;height:2px;
  background:linear-gradient(90deg,transparent,rgba(125,211,252,.85),transparent);
  opacity:.7;
}
.card:hover{transform:translateY(-4px);border-color:rgba(125,211,252,.55);
  box-shadow:0 16px 38px rgba(2,6,23,.65),0 0 18px rgba(56,189,248,.16);}
.card h3{font-size:1.08rem;margin-bottom:10px;}
.card p{color:#a9b7c9;font-size:.94rem;}

/* ===== Hero ===== */
#hero{padding-top:40px;}
.hero-box{
  display:grid;grid-template-columns:1.15fr .85fr;gap:30px;align-items:center;
  background:
    repeating-linear-gradient(100deg,rgba(148,163,184,.045) 0 2px,transparent 2px 7px),
    linear-gradient(135deg,rgba(30,41,59,.95),rgba(11,18,32,.98));
  border:1px solid rgba(148,163,184,.3);
  border-radius:20px;padding:44px 38px;
  box-shadow:0 20px 50px rgba(2,6,23,.6),inset 0 0 60px rgba(56,189,248,.05);
  position:relative;overflow:hidden;
}
.hero-box::before{
  content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,189,248,.22),transparent 68%);
}
.hero-tag{
  display:inline-block;font-size:.78rem;letter-spacing:2px;color:#7dd3fc;
  border:1px solid rgba(125,211,252,.5);border-radius:30px;padding:4px 14px;margin-bottom:16px;
  background:rgba(56,189,248,.08);
}
h1{font-size:2.15rem;line-height:1.35;margin-bottom:16px;
  background:linear-gradient(100deg,#f8fafc,#cbd5e1 45%,#7dd3fc);
  -webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-box p{color:#a9b7c9;font-size:.98rem;margin-bottom:20px;}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;}
.btn{
  display:inline-block;padding:11px 26px;border-radius:10px;font-weight:700;font-size:.92rem;
  border:1px solid rgba(125,211,252,.55);color:#0b1220;
  background:linear-gradient(120deg,#7dd3fc,#94a3b8);
  box-shadow:0 8px 22px rgba(56,189,248,.28);transition:all .28s;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(56,189,248,.42);color:#0b1220;}
.btn.ghost{background:transparent;color:#cbd5e1;border-color:rgba(148,163,184,.55);box-shadow:none;}
.btn.ghost:hover{color:#e0f2fe;border-color:rgba(125,211,252,.7);background:rgba(56,189,248,.08);}
.hero-visual img{border-radius:16px;border:1px solid rgba(148,163,184,.32);
  box-shadow:0 16px 40px rgba(2,6,23,.6);}

/* ===== GEO ===== */
#geo-intro .geo-card{
  background:
    repeating-linear-gradient(115deg,rgba(148,163,184,.045) 0 2px,transparent 2px 6px),
    linear-gradient(150deg,rgba(30,41,59,.9),rgba(15,23,42,.96));
  border:1px solid rgba(148,163,184,.3);border-left:3px solid #7dd3fc;
  border-radius:14px;padding:26px 28px;
  box-shadow:0 12px 34px rgba(2,6,23,.5);
}
#geo-intro p{color:#b6c2d2;font-size:.97rem;}
#geo-intro p+p{margin-top:14px;}

/* ===== Stats ===== */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:18px;}
.stat-item{text-align:center;padding:26px 16px;}
.stat-num{font-size:2rem;font-weight:800;
  background:linear-gradient(120deg,#7dd3fc,#e2e8f0);
  -webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:1px;}
.stat-label{color:#94a3b8;font-size:.9rem;margin-top:6px;}

/* ===== Advantages ===== */
.adv-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;}
.adv-icon{font-size:1.6rem;margin-bottom:10px;display:block;}

/* ===== Events ===== */
.event-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;}
.event-meta{display:flex;justify-content:space-between;font-size:.82rem;color:#7dd3fc;
  margin-bottom:10px;letter-spacing:.5px;}
.event-title{font-weight:700;color:#e2e8f0;margin-bottom:8px;font-size:1.02rem;}
.badge{display:inline-block;font-size:.74rem;padding:2px 10px;border-radius:20px;
  border:1px solid rgba(148,163,184,.45);color:#cbd5e1;background:rgba(148,163,184,.08);}

/* ===== News ===== */
.news-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:22px;}
.news-card .news-date{
  display:inline-block;font-size:.78rem;color:#7dd3fc;letter-spacing:1px;
  border:1px solid rgba(125,211,252,.4);border-radius:20px;padding:2px 12px;margin-bottom:12px;
  background:rgba(56,189,248,.07);
}
.news-card h3{font-size:1.02rem;line-height:1.55;margin-bottom:10px;}
.news-card p{font-size:.9rem;color:#a9b7c9;}
.news-more{display:inline-block;margin-top:14px;font-size:.86rem;color:#7dd3fc;}

/* ===== Testimonials ===== */
.review-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;}
.review-head{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.avatar{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(140deg,#1e293b,#0f172a);border:1px solid rgba(125,211,252,.45);
  font-size:1rem;}
.review-name{font-weight:700;color:#e2e8f0;font-size:.93rem;}
.review-role{font-size:.78rem;color:#94a3b8;}
.stars{color:#7dd3fc;font-size:.85rem;letter-spacing:2px;margin-bottom:8px;}

/* ===== FAQ ===== */
.faq-list{display:grid;gap:14px;}
.faq-item{padding:0;overflow:hidden;}
.faq-q{
  padding:18px 22px;font-weight:700;color:#e2e8f0;font-size:.98rem;
  display:flex;gap:12px;align-items:flex-start;cursor:default;
}
.faq-q span.num{
  flex:0 0 auto;width:26px;height:26px;border-radius:7px;display:grid;place-items:center;
  font-size:.8rem;color:#0b1220;background:linear-gradient(140deg,#7dd3fc,#94a3b8);font-weight:800;
}
.faq-a{padding:0 22px 20px 60px;color:#a9b7c9;font-size:.92rem;}

/* ===== CTA ===== */
.cta-box{
  text-align:center;padding:48px 30px;
  background:
    repeating-linear-gradient(105deg,rgba(148,163,184,.05) 0 2px,transparent 2px 7px),
    linear-gradient(135deg,rgba(30,41,59,.95),rgba(11,18,32,.98));
  border:1px solid rgba(125,211,252,.35);border-radius:20px;
  box-shadow:0 20px 46px rgba(2,6,23,.6),inset 0 0 60px rgba(56,189,248,.06);
}
.cta-box h2{font-size:1.6rem;margin-bottom:14px;}
.cta-box p{color:#a9b7c9;max-width:760px;margin:0 auto 24px;font-size:.96rem;}

/* ===== Footer ===== */
.site-footer{
  border-top:1px solid rgba(148,163,184,.28);
  background:linear-gradient(180deg,rgba(11,18,32,.9),rgba(8,13,22,.98));
  padding:44px 0 24px;margin-top:40px;
}
.footer-inner{max-width:1240px;margin:0 auto;padding:0 22px;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px;}
.footer-col h4{font-size:.98rem;margin-bottom:12px;color:#e2e8f0;}
.footer-col p,.footer-col a{font-size:.88rem;color:#94a3b8;line-height:2;}
.footer-col a:hover{color:#7dd3fc;}
.footer-bottom{
  max-width:1240px;margin:26px auto 0;padding:18px 22px 0;
  border-top:1px solid rgba(148,163,184,.18);
  text-align:center;font-size:.84rem;color:#7b8ba0;
}
.footer-bottom a{color:#94a3b8;}

@media(max-width:880px){
  .hero-box{grid-template-columns:1fr;padding:30px 22px;}
  h1{font-size:1.65rem;}
  .faq-a{padding-left:24px;}
}