/* 海马加速器 主样式 珊瑚翠绿主题 */
:root{
  --p:#134e4a;
  --s:#2dd4bf;
  --bg:#f0fdfa;
  --ink:#0f172a;
  --mute:#475569;
  --line:#ccfbf1;
  --white:#ffffff;
  --radius:24px;
  --shadow:0 10px 30px rgba(19,78,74,.12);
  --shadow-l:0 20px 50px rgba(19,78,74,.18);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.7;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--p);text-decoration:none;transition:.2s}
a:hover{color:var(--s)}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

.site-header{position:sticky;top:0;z-index:99;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hdr{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--p)}
.logo-mark{width:38px;height:38px;border-radius:50%;background:radial-gradient(circle at 35% 35%,var(--s),var(--p));position:relative;box-shadow:0 0 0 4px rgba(45,212,191,.18)}
.logo-mark::after{content:"";position:absolute;inset:6px;border-radius:50%;border:2px solid rgba(255,255,255,.6)}
.nav{display:flex;align-items:center;gap:28px}
.nav a{color:var(--ink);font-weight:500;font-size:15px}
.nav a:hover{color:var(--s)}
.cta{display:inline-block;padding:10px 22px;border-radius:30px;background:linear-gradient(135deg,var(--p),var(--s));color:#fff!important;font-weight:600;box-shadow:var(--shadow);transition:.2s}
.cta:hover{transform:translateY(-2px);color:#fff!important;box-shadow:var(--shadow-l)}
.hamburger{display:none;width:36px;height:36px;border:none;background:transparent;cursor:pointer;flex-direction:column;justify-content:center;gap:6px}
.hamburger span{display:block;width:24px;height:2px;background:var(--p);transition:.2s}

.hero{min-height:60vh;background:linear-gradient(135deg,var(--p) 0%,var(--s) 100%);color:#fff;position:relative;overflow:hidden;padding:80px 0}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 20% 30%,rgba(255,255,255,.08) 0,transparent 40%),radial-gradient(circle at 80% 70%,rgba(255,255,255,.06) 0,transparent 50%)}
.hero-inner{display:flex;align-items:center;gap:50px;position:relative;z-index:1}
.hero-left{flex:0 0 55%}
.hero h1{font-size:54px;font-weight:800;line-height:1.15;margin-bottom:18px;letter-spacing:-1px}
.hero .sub{font-size:18px;opacity:.92;margin-bottom:32px;max-width:540px}
.hero-ctas{display:flex;gap:14px;margin-bottom:42px;flex-wrap:wrap}
.btn-w{display:inline-block;padding:13px 30px;border-radius:30px;background:#fff;color:var(--p);font-weight:700;box-shadow:0 8px 24px rgba(0,0,0,.18);transition:.2s}
.btn-w:hover{transform:translateY(-2px);color:var(--p);box-shadow:0 14px 34px rgba(0,0,0,.25)}
.btn-o{display:inline-block;padding:12px 28px;border-radius:30px;border:2px solid #fff;color:#fff;font-weight:600;transition:.2s}
.btn-o:hover{background:#fff;color:var(--p)}
.stats{display:flex;gap:36px;flex-wrap:wrap}
.stat .num{font-size:30px;font-weight:800;line-height:1}
.stat .lbl{font-size:13px;opacity:.85;margin-top:6px}
.hero-right{flex:0 0 45%;text-align:center}
.hero-right img{margin:0 auto;filter:drop-shadow(0 18px 40px rgba(0,0,0,.25))}

.strip{padding:50px 0;background:#fff}
.strip h2{text-align:center;font-size:28px;margin-bottom:8px}
.strip .sub2{text-align:center;color:var(--mute);margin-bottom:30px}
.strip-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:14px}
.node{background:linear-gradient(180deg,#f0fdfa,#fff);border:1px solid var(--line);border-radius:14px;padding:16px 10px;text-align:center;transition:.2s}
.node:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.node .city{font-weight:700;color:var(--p);font-size:14px}
.node .ms{font-size:20px;color:var(--s);font-weight:800;margin:6px 0 2px}
.node .arrow{color:#10b981;font-size:13px}

.features{padding:80px 0}
.sec-title{text-align:center;font-size:34px;font-weight:800;margin-bottom:10px;color:var(--p)}
.sec-sub{text-align:center;color:var(--mute);margin-bottom:50px;font-size:16px}
.f-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.f-card{background:#fff;border-radius:var(--radius);padding:38px 30px;box-shadow:var(--shadow);transition:.25s;border:1px solid var(--line)}
.f-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-l)}
.f-card img{margin-bottom:18px}
.f-card h3{font-size:20px;margin-bottom:10px;color:var(--p)}
.f-card p{color:var(--mute);font-size:14.5px}

.scenarios{padding:80px 0;background:#fff}
.s-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.s-card{display:flex;gap:24px;align-items:center;background:linear-gradient(135deg,#f0fdfa,#fff);border-radius:var(--radius);padding:24px;border:1px solid var(--line);transition:.25s}
.s-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.s-card img{flex:0 0 48%;border-radius:14px}
.s-body h3{font-size:19px;color:var(--p);margin-bottom:10px}
.s-body ul{list-style:none;margin-bottom:14px}
.s-body li{padding:4px 0 4px 18px;position:relative;color:var(--mute);font-size:14px}
.s-body li::before{content:"▸";position:absolute;left:0;color:var(--s)}
.s-link{color:var(--s);font-weight:600;font-size:14px}

.pricing{padding:80px 0}
.p-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.p-card{background:#fff;border-radius:var(--radius);padding:34px 24px;text-align:center;border:1px solid var(--line);box-shadow:var(--shadow);position:relative;transition:.25s}
.p-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-l)}
.p-card.popular{border:2px solid var(--s);transform:scale(1.04)}
.p-card.popular:hover{transform:scale(1.04) translateY(-5px)}
.ribbon{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,var(--p),var(--s));color:#fff;padding:6px 18px;border-radius:20px;font-size:12px;font-weight:600;box-shadow:var(--shadow)}
.p-name{font-size:16px;color:var(--mute);font-weight:600;margin-bottom:10px}
.p-price{font-size:42px;font-weight:800;color:var(--p);line-height:1}
.p-price small{font-size:14px;color:var(--mute);font-weight:500}
.p-old{color:#94a3b8;text-decoration:line-through;font-size:14px;margin:6px 0 18px}
.p-feat{list-style:none;text-align:left;margin-bottom:22px}
.p-feat li{padding:7px 0 7px 24px;position:relative;font-size:14px;color:var(--mute);border-bottom:1px dashed var(--line)}
.p-feat li::before{content:"◉";position:absolute;left:0;color:var(--s)}
.p-feat li:last-child{border-bottom:none}
.p-btn{display:block;padding:12px 0;border-radius:30px;background:linear-gradient(135deg,var(--p),var(--s));color:#fff!important;font-weight:600;box-shadow:var(--shadow);transition:.2s}
.p-btn:hover{transform:translateY(-2px);color:#fff!important}

.news{padding:80px 0;background:#fff}
.n-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.n-card{background:linear-gradient(180deg,#f0fdfa,#fff);border-radius:var(--radius);padding:24px;border:1px solid var(--line);transition:.25s}
.n-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.n-meta{display:flex;gap:10px;align-items:center;font-size:13px;color:var(--mute);margin-bottom:10px}
.n-tag{background:var(--s);color:#fff;padding:2px 10px;border-radius:10px;font-size:12px}
.n-card h3{font-size:17px;margin-bottom:8px;color:var(--p);line-height:1.4}
.n-card p{color:var(--mute);font-size:14px;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.n-more{color:var(--s);font-weight:600;font-size:14px}

.footer{background:linear-gradient(135deg,var(--p),#022c22);color:#cbd5e1;padding:60px 0 30px;margin-top:40px}
.f-grid2{display:grid;grid-template-columns:1.2fr 1fr 1.5fr;gap:40px;margin-bottom:40px}
.f-col h4{color:#fff;font-size:17px;margin-bottom:18px}
.f-col p{font-size:14px;margin-bottom:8px;color:#94a3b8}
.f-links{display:flex;flex-wrap:wrap;gap:8px 16px}
.f-links a{color:#94a3b8;font-size:13px}
.f-links a:hover{color:var(--s)}
.copy{text-align:center;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#64748b}
.copy a{color:#94a3b8}
.copy a:hover{color:var(--s)}

.totop{position:fixed;right:22px;bottom:22px;width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--p),var(--s));color:#fff;border:none;cursor:pointer;font-size:20px;box-shadow:var(--shadow-l);display:none;z-index:90;transition:.2s}
.totop.show{display:block}
.totop:hover{transform:translateY(-3px)}

@media(max-width:768px){
  .nav{position:fixed;top:64px;right:-100%;flex-direction:column;background:#fff;width:80%;height:calc(100vh - 64px);padding:30px;box-shadow:-10px 0 30px rgba(0,0,0,.1);transition:.3s;gap:18px;align-items:flex-start}
  .nav.open{right:0}
  .hamburger{display:flex}
  .hero{padding:60px 0}
  .hero-inner{flex-direction:column;text-align:center}
  .hero-left,.hero-right{flex:1 1 100%}
  .hero h1{font-size:36px}
  .hero-ctas{justify-content:center}
  .stats{justify-content:center;gap:24px}
  .strip-grid{grid-template-columns:repeat(4,1fr)}
  .f-grid,.n-grid{grid-template-columns:1fr}
  .s-grid{grid-template-columns:1fr}
  .s-card{flex-direction:column;text-align:center}
  .p-grid{grid-template-columns:1fr 1fr}
  .p-card.popular{transform:none}
  .f-grid2{grid-template-columns:1fr;gap:30px}
  .sec-title{font-size:26px}
}
@media(max-width:480px){
  .hero h1{font-size:28px}
  .strip-grid{grid-template-columns:repeat(2,1fr)}
  .p-grid{grid-template-columns:1fr}
  .stat{flex:0 0 45%}
  .stats{gap:14px}
  .node:nth-child(n+7){display:none}
}