:root{
  --deep:#0f172a;
  --deep2:#080f1a;
  --teal:#14b8a6;
  --teal2:#5eead4;
  --text:#e8f6f4;
  --muted:#9db3c2;
  --card:rgba(255,255,255,.05);
  --line:rgba(94,234,212,.18);
  --radius:18px;
  --max:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Segoe UI","Helvetica Neue",Arial,"Microsoft YaHei","微软雅黑","PingFang SC",sans-serif;
  color:var(--text);
  background:
    radial-gradient(1000px 620px at 12% -8%, #153a52 0%, transparent 62%),
    radial-gradient(900px 560px at 88% 4%, rgba(20,184,166,.20) 0%, transparent 58%),
    linear-gradient(180deg,#080f1a 0%, #0f172a 42%, #071720 100%);
  background-attachment:fixed;
  line-height:1.8;
  min-height:100vh;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:repeating-linear-gradient(115deg, rgba(94,234,212,.04) 0 1px, transparent 1px 28px);
}
img{max-width:100%;display:block;border-radius:14px}
a{color:var(--teal2)}
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(8,15,26,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  max-width:var(--max);
  margin:0 auto;
  padding:14px 22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.brand{
  font-size:19px;
  font-weight:700;
  letter-spacing:.6px;
  color:var(--teal2);
  text-decoration:none;
}
.nav-links{display:flex;gap:6px;flex-wrap:wrap}
.nav-links a{
  color:var(--muted);
  text-decoration:none;
  font-size:15px;
  padding:8px 14px;
  border-radius:999px;
  border:1px solid transparent;
  transition:all .25s ease;
}
.nav-links a:hover{
  color:#fff;
  border-color:var(--line);
  background:rgba(20,184,166,.14);
}
main{position:relative;z-index:1}
.wrap{
  max-width:var(--max);
  margin:0 auto;
  padding:0 22px;
}
section{padding:64px 0}
.hero{
  position:relative;
  padding:78px 0 66px;
  overflow:hidden;
}
.hero::after{
  content:"";
  position:absolute;
  width:760px;height:760px;
  right:-260px;top:-320px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(20,184,166,.30) 0%, rgba(20,184,166,0) 68%);
  pointer-events:none;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:46px;
  align-items:center;
}
.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:3px;
  color:var(--teal2);
  border:1px solid var(--line);
  border-radius:999px;
  padding:6px 16px;
  margin-bottom:22px;
  background:rgba(20,184,166,.08);
}
h1{
  font-size:40px;
  line-height:1.3;
  font-weight:700;
  letter-spacing:.5px;
  background:linear-gradient(120deg,#ffffff 0%, #5eead4 62%, #14b8a6 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  margin-bottom:20px;
}
.hero-sub{color:var(--muted);font-size:16px;max-width:620px}
.hero-actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.btn{
  display:inline-block;
  text-decoration:none;
  padding:12px 26px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  transition:all .25s ease;
}
.btn.primary{
  color:#03201d;
  background:linear-gradient(120deg,#5eead4,#14b8a6);
  box-shadow:0 10px 30px rgba(20,184,166,.30);
}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(20,184,166,.44)}
.btn.ghost{
  color:var(--teal2);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
}
.btn.ghost:hover{background:rgba(20,184,166,.16);color:#fff}
.hero-figure{
  border-radius:24px;
  overflow:hidden;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  box-shadow:0 30px 70px rgba(0,0,0,.55), inset 0 1px 0 rgba(255,255,255,.08);
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.section-head{margin-bottom:36px}
.section-head h2{
  font-size:27px;
  letter-spacing:.5px;
  margin-bottom:10px;
  color:#ffffff;
}
.section-head p{color:var(--muted);font-size:15px;max-width:760px}
.divider{
  width:64px;height:3px;
  border-radius:3px;
  background:linear-gradient(90deg,#5eead4,#14b8a6);
  margin-bottom:18px;
}
.geo-panel{
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:34px 32px;
  background:
    linear-gradient(140deg, rgba(94,234,212,.10) 0%, rgba(255,255,255,.03) 46%, rgba(20,184,166,.08) 100%);
  box-shadow:0 22px 60px rgba(0,0,0,.42), inset 0 1px 0 rgba(255,255,255,.08);
  position:relative;
  overflow:hidden;
}
.geo-panel::before{
  content:"";
  position:absolute;
  inset:-40% -10% auto auto;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(94,234,212,.18) 0%, transparent 70%);
}
.geo-panel p{position:relative;color:#d6e9e6;font-size:16px}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  gap:18px;
}
.stat-card{
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 22px;
  background:linear-gradient(160deg, rgba(255,255,255,.06), rgba(20,184,166,.06));
  backdrop-filter:blur(8px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07);
  text-align:center;
  transition:transform .3s ease,border-color .3s ease;
}
.stat-card:hover{transform:translateY(-4px);border-color:rgba(94,234,212,.45)}
.stat-num{
  font-size:34px;
  font-weight:700;
  color:var(--teal2);
  letter-spacing:1px;
}
.stat-label{color:var(--muted);font-size:14px;margin-top:6px}
.feature-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(270px,1fr));
  gap:20px;
}
.feature-card{
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:28px 24px;
  background:linear-gradient(155deg, rgba(255,255,255,.055), rgba(8,15,26,.55));
  position:relative;
  overflow:hidden;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.feature-card::after{
  content:"";
  position:absolute;
  left:-30%;top:-60%;
  width:180px;height:180px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(94,234,212,.20), transparent 70%);
  transition:all .5s ease;
}
.feature-card:hover{transform:translateY(-5px);border-color:rgba(94,234,212,.42);box-shadow:0 20px 44px rgba(0,0,0,.45)}
.feature-card:hover::after{left:60%;top:20%}
.feature-icon{font-size:26px;margin-bottom:14px}
.feature-card h3{font-size:17px;margin-bottom:10px;color:#fff}
.feature-card p{color:var(--muted);font-size:14.5px}
.story-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:40px;
  align-items:center;
}
.story-figure{
  border-radius:24px;
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:0 26px 60px rgba(0,0,0,.5);
}
.story-text p{color:var(--muted);font-size:15.5px;margin-bottom:16px}
.story-text p:last-child{margin-bottom:0}
.event-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:20px;
}
.event-card{
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
  background:linear-gradient(150deg, rgba(20,184,166,.10), rgba(255,255,255,.03));
  transition:transform .3s ease;
}
.event-card:hover{transform:translateY(-4px)}
.event-tag{
  display:inline-block;
  font-size:12px;
  letter-spacing:1px;
  color:var(--teal2);
  border:1px solid var(--line);
  border-radius:999px;
  padding:3px 12px;
  margin-bottom:14px;
}
.event-card h3{font-size:16.5px;color:#fff;margin-bottom:10px}
.event-card p{color:var(--muted);font-size:14.5px}
.news-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(320px,1fr));
  gap:22px;
}
.news-card{
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 24px;
  background:linear-gradient(160deg, rgba(255,255,255,.055), rgba(8,15,26,.60));
  transition:transform .3s ease,border-color .3s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(94,234,212,.40)}
.news-date{
  display:inline-block;
  font-size:12.5px;
  color:#062b26;
  background:linear-gradient(120deg,#5eead4,#14b8a6);
  border-radius:999px;
  padding:3px 12px;
  margin-bottom:14px;
  font-weight:600;
}
.news-card h3{font-size:16.5px;line-height:1.55;color:#fff;margin-bottom:12px}
.news-card p{color:var(--muted);font-size:14.5px}
.quote-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:20px;
}
.quote-card{
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 24px;
  background:rgba(255,255,255,.04);
  backdrop-filter:blur(6px);
  position:relative;
}
.quote-card::before{
  content:"“";
  position:absolute;
  top:6px;right:20px;
  font-size:56px;
  color:rgba(94,234,212,.18);
  line-height:1;
}
.quote-card p{color:#d3e8e4;font-size:14.8px}
.quote-meta{margin-top:16px;font-size:13px;color:var(--teal2)}
.faq-list{display:flex;flex-direction:column;gap:16px}
.faq-item{
  border:1px solid var(--line);
  border-radius:16px;
  background:linear-gradient(160deg, rgba(255,255,255,.05), rgba(8,15,26,.55));
  overflow:hidden;
  transition:border-color .3s ease;
}
.faq-item[open]{border-color:rgba(94,234,212,.42)}
.faq-item summary{
  cursor:pointer;
  list-style:none;
  padding:20px 24px;
  font-size:16px;
  font-weight:600;
  color:#fff;
  display:flex;
  gap:12px;
  align-items:flex-start;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";
  margin-left:auto;
  color:var(--teal2);
  font-weight:700;
  font-size:20px;
  line-height:1;
}
.faq-item[open] summary::after{content:"−"}
.faq-answer{
  padding:0 24px 22px 24px;
  color:var(--muted);
  font-size:14.8px;
}
.download-panel{
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:38px;
  align-items:center;
  border:1px solid var(--line);
  border-radius:24px;
  padding:38px;
  background:
    radial-gradient(600px 280px at 90% 10%, rgba(94,234,212,.16), transparent 70%),
    linear-gradient(150deg, rgba(255,255,255,.05), rgba(8,15,26,.6));
  box-shadow:0 26px 64px rgba(0,0,0,.45);
}
.download-figure{border-radius:18px;overflow:hidden;border:1px solid var(--line)}
.download-text h2{font-size:25px;color:#fff;margin-bottom:14px}
.download-text p{color:var(--muted);font-size:15px;margin-bottom:22px}
.cta-panel{
  text-align:center;
  border:1px solid var(--line);
  border-radius:26px;
  padding:56px 32px;
  background:
    radial-gradient(700px 320px at 50% 0%, rgba(20,184,166,.22), transparent 72%),
    linear-gradient(160deg, rgba(255,255,255,.05), rgba(8,15,26,.62));
  box-shadow:0 30px 70px rgba(0,0,0,.5);
}
.cta-panel h2{font-size:27px;color:#fff;margin-bottom:14px}
.cta-panel p{color:var(--muted);font-size:15.5px;max-width:720px;margin:0 auto 26px}
.site-footer{
  position:relative;
  z-index:1;
  border-top:1px solid var(--line);
  background:rgba(6,12,20,.86);
  padding:48px 0 26px;
  margin-top:30px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.2fr 1fr 1fr;
  gap:34px;
  margin-bottom:32px;
}
.footer-logo{font-size:20px;font-weight:700;color:var(--teal2);margin-bottom:14px;display:block}
.footer-grid p,.footer-grid li{color:var(--muted);font-size:14px;line-height:1.9;list-style:none}
.footer-grid h4{font-size:15px;color:#fff;margin-bottom:12px;letter-spacing:.5px}
.footer-grid a{color:var(--muted);text-decoration:none;transition:color .2s ease}
.footer-grid a:hover{color:var(--teal2)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:20px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  color:#7d94a3;
  font-size:13px;
}
.footer-bottom a{color:#9db3c2;text-decoration:none}
.footer-bottom a:hover{color:var(--teal2)}
@media(max-width:900px){
  .hero-grid,.story-grid,.download-panel,.footer-grid{grid-template-columns:1fr}
  h1{font-size:30px}
  section{padding:48px 0}
  .hero{padding:56px 0 44px}
}