:root{
  --primary:#2aa7a0;
  --primary-dark:#16827c;
  --soft:#eaf8f6;
  --blue:#eaf4ff;
  --text:#1f2937;
  --muted:#6b7280;
  --line:#e5e7eb;
  --white:#fff;
  --shadow:0 14px 40px rgba(31,41,55,.08);
  --radius:22px;
}
*{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;
  color:var(--text);
  background:#fff;
  line-height:1.7;
  overflow-wrap:break-word;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
button,input,textarea{font:inherit}
a,button{touch-action:manipulation;-webkit-tap-highlight-color:transparent}
.container{width:min(1120px,92%);margin:auto}
.header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(229,231,235,.7);
}
.nav{height:68px;display:flex;align-items:center;justify-content:space-between}
.logo{display:inline-flex;align-items:center;min-height:44px;font-weight:800;font-size:22px;color:var(--primary-dark);letter-spacing:.5px}
.nav-links{display:flex;gap:30px;align-items:center;font-size:15px;color:#374151}
.nav-links a:hover{color:var(--primary-dark)}
.nav-btn,.btn{
  background:var(--primary);color:#fff;padding:11px 20px;border-radius:999px;
  box-shadow:0 10px 22px rgba(42,167,160,.22);display:inline-block;font-weight:700
}
.menu-btn{display:none;width:44px;height:44px;align-items:center;justify-content:center;border:0;background:var(--soft);padding:0;border-radius:8px;font-size:20px;color:var(--primary-dark);cursor:pointer}
.hero{
  background:linear-gradient(135deg,#f3fbfa 0%,#eef7ff 55%,#fff 100%);
  padding:48px 0;
}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:32px;align-items:center}
.hero-grid>*{min-width:0}
.badge{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);padding:8px 14px;border-radius:999px;color:var(--primary-dark);font-weight:700;font-size:14px}
h1{font-size:52px;line-height:1.15;margin:22px 0 18px;letter-spacing:0}
.hero p{font-size:18px;color:var(--muted);margin:0 0 30px}
.miniapp-card{justify-self:center;width:min(100%,310px);padding:20px;text-align:center;background:#fff;border:1px solid #dcebea;border-radius:8px;box-shadow:var(--shadow)}
.miniapp-label{display:inline-block;margin-bottom:8px;color:var(--primary-dark);font-size:14px;font-weight:800}
.miniapp-code{width:min(100%,220px);height:auto;aspect-ratio:1;object-fit:contain;margin:0 auto 12px}
.miniapp-card strong{display:block;color:#1f2937;font-size:18px}
.hero .miniapp-card p{margin:6px 0 0;color:var(--muted);font-size:15px}
.section{padding:74px 0}
.section-title{text-align:center;margin-bottom:38px}
.section-title h2{font-size:34px;margin:0 0 10px}
.section-title p{color:var(--muted);margin:0}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;
  box-shadow:0 10px 28px rgba(31,41,55,.05)
}
.card h3{margin:14px 0 8px;font-size:20px}
.card p{color:var(--muted);margin:0}
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
.step{background:var(--soft);border-radius:var(--radius);padding:24px;position:relative}
.step:before{counter-increment:step;content:"0" counter(step);font-weight:900;color:var(--primary-dark);font-size:28px}
.step h3{margin:10px 0 6px}
.step p{margin:0;color:var(--muted)}
.cta{
  background:linear-gradient(135deg,var(--primary),#62c7bf);
  color:#fff;border-radius:34px;padding:46px;text-align:center;box-shadow:var(--shadow)
}
.cta h2{font-size:34px;margin:0 0 10px}
.cta p{opacity:.92;margin:0 0 24px}
.cta .btn{background:#fff;color:var(--primary-dark)}
.footer{background:#111827;color:#d1d5db;padding:44px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}
.footer-grid>*{min-width:0}
.footer h3,.footer h4{color:#fff;margin-top:0}
.footer a{display:block;color:#d1d5db;margin:7px 0}
.footer .inline-link{display:inline!important;margin:0}
.footer p{white-space:normal}
.footer-grid>div:last-child p{white-space:nowrap}
.copy{display:flex;align-items:center;flex-wrap:nowrap;gap:8px;white-space:nowrap;overflow-x:auto;border-top:1px solid rgba(255,255,255,.1);margin-top:28px;padding-top:18px;color:#9ca3af;font-size:14px}
.page-hero{padding:64px 0;background:linear-gradient(135deg,#f2fbfa,#f5f9ff);text-align:center}
.page-hero h1{font-size:42px;margin:0 0 12px}
.page-hero p{color:var(--muted);margin:0}
.list{display:grid;gap:16px}
.list-item{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}
.list-item strong{color:var(--primary-dark)}
.faq{max-width:880px;margin:auto}
.faq-item{border:1px solid var(--line);border-radius:18px;margin-bottom:14px;overflow:hidden;background:#fff}
.faq-q{width:100%;min-height:56px;padding:14px 20px;border:0;background:#fff;color:var(--text);font-weight:800;cursor:pointer;display:flex;align-items:center;justify-content:space-between;text-align:left}
.faq-q:focus-visible{outline:0;box-shadow:inset 0 0 0 3px rgba(42,167,160,.35)}
.menu-btn:focus-visible,a:focus-visible{outline:3px solid rgba(42,167,160,.35);outline-offset:2px}
.faq-a{display:none;padding:0 20px 18px;color:var(--muted)}
.faq-item.active .faq-a{display:block}
.contact-box{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.form input,.form textarea{
  width:100%;border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin-bottom:14px;font:inherit
}
.form textarea{min-height:130px;resize:vertical}
@media(max-width:900px){
  h1{font-size:40px}
  .hero-grid,.grid-3,.footer-grid,.contact-box{grid-template-columns:1fr}
  .process{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:680px){
  .copy{font-size:12px;scrollbar-width:none}
  .copy::-webkit-scrollbar{display:none}
  .nav{height:62px}
  .menu-btn{display:flex}
  .nav-links{
    display:none;position:absolute;left:4%;right:4%;top:68px;background:#fff;border:1px solid var(--line);
    border-radius:8px;padding:12px 18px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start;gap:2px;
    max-height:calc(100vh - 84px);overflow-y:auto
  }
  .nav-links.open{display:flex}
  .nav-links a{display:flex;align-items:center;width:100%;min-height:44px;padding:7px 0}
  .nav-btn{justify-content:center;width:100%;margin-top:4px;text-align:center}
  .hero{padding:36px 0}
  h1{font-size:34px;overflow-wrap:anywhere}
  .miniapp-card{width:min(100%,310px)}
  .hero p{font-size:16px}
  .section{padding:52px 0}
  .card{padding:22px}
  .step{padding:22px}
  .section-title h2,.cta h2{font-size:28px}
  .process{grid-template-columns:1fr}
  .cta{padding:34px 22px}
  .page-hero{padding:44px 0}
  .page-hero h1{font-size:32px}
  .footer{padding:36px 0 calc(22px + env(safe-area-inset-bottom))}
  .footer-grid{gap:24px}
}
@media(max-width:360px){
  h1{font-size:30px}
  .hero{padding:30px 0}
  .section{padding:44px 0}
  .section-title{margin-bottom:28px}
  .section-title h2,.cta h2{font-size:26px}
  .miniapp-card{padding:16px}
  .miniapp-code{width:min(100%,200px)}
}
@media(orientation:landscape) and (max-height:520px){
  .nav-links{max-height:calc(100vh - 76px)}
}