:root{
  --teal:#0d9488;
  --teal-light:#14b8a6;
  --deep:#134e4a;
  --sand:#f0ece1;
  --cream:#faf8f3;
  --ink:#16302e;
  --muted:#587572;
  --line:rgba(13,148,136,.16);
}
*{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;
  background:var(--cream);
  color:var(--ink);
  line-height:1.85;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{text-decoration:none;color:inherit;}
ul{list-style:none;}
.wrap{width:min(1180px,92%);margin:0 auto;}
section{padding:72px 0;}
h1,h2,h3,h4{line-height:1.35;font-weight:700;letter-spacing:.2px;}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem);margin-bottom:14px;color:var(--deep);}
h3{font-size:1.08rem;color:var(--deep);}
p{color:#284340;}
.sec-head{max-width:760px;margin-bottom:38px;}
.sec-head .eyebrow{
  display:inline-block;font-size:.78rem;letter-spacing:.22em;
  color:var(--teal);font-weight:700;text-transform:uppercase;margin-bottom:10px;
}
.sec-head p{color:var(--muted);font-size:.98rem;}

/* header */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(250,248,243,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 0;flex-wrap:wrap;}
.brand{font-weight:800;font-size:1.05rem;color:var(--deep);display:flex;align-items:center;gap:8px;}
.brand span{background:linear-gradient(135deg,var(--teal),var(--deep));-webkit-background-clip:text;background-clip:text;color:transparent;}
.nav-links{display:flex;gap:6px;flex-wrap:wrap;}
.nav-links a{
  padding:8px 14px;border-radius:999px;font-size:.9rem;color:#1f4a46;font-weight:600;
  transition:.25s;
}
.nav-links a:hover{background:linear-gradient(135deg,var(--teal),var(--deep));color:#fff;}

/* hero */
.hero{
  background:
    radial-gradient(circle at 88% 12%,rgba(20,184,166,.22),transparent 55%),
    linear-gradient(140deg,#0d9488 0%,#116b62 48%,#134e4a 100%);
  color:#fff;padding:78px 0 84px;position:relative;overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-120px;bottom:-140px;width:420px;height:420px;
  border-radius:50%;background:rgba(255,255,255,.06);
}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:46px;align-items:center;position:relative;z-index:2;}
.hero .tag{
  display:inline-block;padding:6px 16px;border-radius:999px;font-size:.78rem;letter-spacing:.18em;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);margin-bottom:20px;font-weight:700;
}
.hero h1{font-size:clamp(1.7rem,3.6vw,2.65rem);color:#fff;margin-bottom:20px;}
.hero p{color:rgba(255,255,255,.92);font-size:1rem;max-width:640px;}
.hero-btns{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;}
.btn{
  display:inline-block;padding:12px 26px;border-radius:999px;font-weight:700;font-size:.92rem;
  transition:.28s;
}
.btn-primary{background:#fff;color:var(--deep);box-shadow:0 10px 26px rgba(0,0,0,.18);}
.btn-primary:hover{transform:translateY(-3px);}
.btn-ghost{border:1px solid rgba(255,255,255,.55);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.15);}
.hero-img{border-radius:26px;overflow:hidden;box-shadow:0 26px 60px rgba(0,0,0,.3);border:5px solid rgba(255,255,255,.14);}
.hero-img img{width:100%;height:340px;object-fit:cover;}

/* geo */
#geo-intro{background:var(--cream);padding:64px 0 8px;}
.geo-box{
  background:#fff;border-radius:22px;padding:38px 40px;
  border:1px solid var(--line);
  box-shadow:0 16px 44px rgba(19,78,74,.07);
  border-left:6px solid var(--teal);
}
.geo-box p{font-size:1rem;color:#2b4744;}

/* stats */
#data-stats{background:linear-gradient(180deg,var(--sand),#f7f4ea);}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;}
.stat-card{
  background:#fff;border-radius:20px;padding:30px 24px;text-align:center;
  border:1px solid rgba(13,148,136,.14);transition:.3s;
}
.stat-card:hover{transform:translateY(-6px);box-shadow:0 18px 36px rgba(13,148,136,.14);}
.stat-card .num{
  font-size:2.1rem;font-weight:800;
  background:linear-gradient(135deg,var(--teal),var(--deep));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-card .lbl{font-size:.9rem;color:var(--muted);margin-top:6px;font-weight:600;}

/* features */
#core-advantages{background:var(--cream);}
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:22px;}
.feature-card{
  background:#fff;border-radius:20px;padding:30px 26px;border:1px solid var(--line);
  position:relative;transition:.3s;
}
.feature-card:hover{transform:translateY(-6px);box-shadow:0 20px 40px rgba(19,78,74,.12);}
.feature-card .ico{font-size:1.7rem;margin-bottom:14px;}
.feature-card h3{margin-bottom:10px;}
.feature-card p{font-size:.93rem;color:var(--muted);}

/* story */
#brand-story{background:linear-gradient(160deg,#0f766e,#134e4a);color:#fff;}
#brand-story h2{color:#fff;}
#brand-story p{color:rgba(255,255,255,.9);}
.story-inner{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.story-img{border-radius:24px;overflow:hidden;box-shadow:0 24px 56px rgba(0,0,0,.32);}
.story-img img{width:100%;height:330px;object-fit:cover;}
.story-list{margin-top:22px;display:grid;gap:12px;}
.story-list li{
  display:flex;gap:10px;font-size:.94rem;color:rgba(255,255,255,.9);
}
.story-list li::before{content:"✦";color:#5eead4;}

/* timeline */
#timeline{background:var(--sand);}
.tl{position:relative;padding-left:34px;border-left:2px dashed rgba(13,148,136,.4);}
.tl-item{position:relative;padding:0 0 30px 6px;}
.tl-item::before{
  content:"";position:absolute;left:-43px;top:8px;width:16px;height:16px;border-radius:50%;
  background:linear-gradient(135deg,var(--teal),var(--deep));border:3px solid var(--sand);
}
.tl-item h3{margin-bottom:6px;}
.tl-item p{font-size:.93rem;color:var(--muted);}

/* coverage */
#coverage{background:var(--cream);}
.cov-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:20px;}
.cov-card{
  background:#fff;border-radius:18px;padding:26px 24px;border-top:4px solid var(--teal);
  box-shadow:0 10px 28px rgba(19,78,74,.07);transition:.3s;
}
.cov-card:hover{transform:translateY(-5px);}
.cov-card h3{margin-bottom:8px;}
.cov-card p{font-size:.92rem;color:var(--muted);}

/* events */
#featured-events{background:linear-gradient(180deg,#f7f4ea,var(--sand));}
.event-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;}
.event-card{
  background:#fff;border-radius:22px;overflow:hidden;border:1px solid var(--line);
  transition:.3s;
}
.event-card:hover{transform:translateY(-6px);box-shadow:0 22px 44px rgba(19,78,74,.14);}
.event-card img{width:100%;height:180px;object-fit:cover;}
.event-body{padding:22px 24px 26px;}
.event-body .chip{
  display:inline-block;font-size:.74rem;font-weight:700;letter-spacing:.08em;
  background:rgba(13,148,136,.12);color:var(--teal);padding:4px 12px;border-radius:999px;margin-bottom:12px;
}
.event-body p{font-size:.92rem;color:var(--muted);margin-top:8px;}

/* news */
#news-list{background:var(--cream);}
.news-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:22px;}
.news-item{
  background:#fff;border-radius:20px;padding:26px 26px 28px;border:1px solid var(--line);
  transition:.3s;
}
.news-item:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(19,78,74,.12);}
.news-meta{
  font-size:.8rem;color:var(--teal);font-weight:700;letter-spacing:.05em;margin-bottom:10px;
}
.news-item h3{font-size:1.03rem;margin-bottom:10px;}
.news-item p{font-size:.92rem;color:var(--muted);}

/* testimonials */
#testimonials{background:linear-gradient(160deg,var(--sand),#f7f4ea);}
.quote-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:22px;}
.quote{
  background:#fff;border-radius:20px;padding:28px 26px;border:1px solid var(--line);
}
.quote .star{color:#f59e0b;letter-spacing:2px;margin-bottom:12px;font-size:.9rem;}
.quote p{font-size:.94rem;color:#2b4744;font-style:normal;}
.quote .who{margin-top:14px;font-size:.85rem;color:var(--teal);font-weight:700;}

/* faq */
#faq{background:var(--cream);}
.faq-list{display:grid;gap:16px;}
.faq-item{
  background:#fff;border-radius:18px;padding:24px 28px;border:1px solid var(--line);
  border-left:5px solid var(--teal);
}
.faq-item h3{font-size:1rem;margin-bottom:10px;color:var(--deep);}
.faq-item p{font-size:.93rem;color:var(--muted);}

/* cta + download */
#cta{
  background:linear-gradient(130deg,#0d9488,#134e4a);color:#fff;text-align:center;
  padding:70px 0;
}
#cta h2{color:#fff;}
#cta p{color:rgba(255,255,255,.9);max-width:760px;margin:0 auto;}
#app-download{background:var(--cream);}
.dl-inner{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.dl-img{border-radius:24px;overflow:hidden;box-shadow:0 22px 50px rgba(19,78,74,.2);}
.dl-img img{width:100%;height:320px;object-fit:cover;}
.dl-list{display:grid;gap:12px;margin-top:20px;}
.dl-list li{font-size:.94rem;color:var(--muted);display:flex;gap:10px;}
.dl-list li::before{content:"✓";color:var(--teal);font-weight:800;}

/* footer */
.site-footer{
  background:#0f2f2c;color:rgba(255,255,255,.78);padding:54px 0 26px;font-size:.9rem;
}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:32px;}
.site-footer h4{color:#fff;font-size:.98rem;margin-bottom:14px;}
.site-footer p{color:rgba(255,255,255,.72);font-size:.88rem;margin-bottom:8px;}
.site-footer a:hover{color:#5eead4;}
.footer-bottom{
  margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:.82rem;color:rgba(255,255,255,.6);
}

@media(max-width:860px){
  .hero-inner,.story-inner,.dl-inner{grid-template-columns:1fr;}
  .hero-img img,.story-img img,.dl-img img{height:250px;}
  .geo-box{padding:28px 24px;}
  section{padding:54px 0;}
  .nav-links a{padding:7px 11px;font-size:.84rem;}
}