/* AlphaFolio – Apple-inspired Premium Edition */
:root{
  --page:#f5f5f7;
  --surface:#ffffff;
  --surface-soft:#fbfbfd;
  --ink:#1d1d1f;
  --muted:#6e6e73;
  --line:rgba(0,0,0,.08);
  --green:#0a7a3d;
  --blue:#0071e3;
  --purple:#8e5cf7;
  --orange:#ff8a00;
  --radius:32px;
  --shadow:0 24px 70px rgba(0,0,0,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--page);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Inter","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font:inherit}
.zh-text,.en-text{display:inline}
html.lang-zh .en-text{display:none!important}
html.lang-en .zh-text{display:none!important}
.container{width:min(1180px, calc(100% - 44px)); margin:0 auto}
.nav{
  position:sticky;
  top:0;
  z-index:80;
  height:52px;
  background:rgba(245,245,247,.78);
  backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid rgba(0,0,0,.06);
}
.nav-inner{
  height:52px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px}
.alpha{
  width:28px;height:28px;
  display:grid;place-items:center;
  color:var(--green);
  font-size:26px;
  line-height:1;
  font-family:Georgia,serif;
  font-style:italic;
}
.links{display:flex;gap:28px;color:#424245;font-size:13px}
.links a:hover{color:#000}
.nav-actions{display:flex;gap:12px;align-items:center}
.lang-btn{border:0;background:transparent;color:#424245;cursor:pointer;font-size:13px}
.nav-cta{
  min-height:30px;
  padding:0 14px;
  border-radius:999px;
  background:var(--blue);
  color:#fff;
  display:inline-flex;
  align-items:center;
  font-size:13px;
  font-weight:600;
}
.hero{
  position:relative;
  overflow:hidden;
  padding:92px 0 80px;
  background:
    radial-gradient(circle at 50% 0%, rgba(10,122,61,.08), transparent 34%),
    linear-gradient(180deg,#fff 0%,#f5f5f7 100%);
}
.hero-copy{text-align:center;max-width:980px;margin:0 auto 54px}
.kicker{
  color:var(--green);
  font-size:21px;
  font-weight:700;
  letter-spacing:-.01em;
  margin:0 0 14px;
}
.hero h1{
  margin:0;
  font-size:clamp(56px,9vw,128px);
  line-height:.94;
  letter-spacing:-.075em;
  font-weight:800;
}
.hero h1 .grad{
  background:linear-gradient(100deg,var(--green),var(--blue) 54%,var(--purple));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero p{
  margin:24px auto 0;
  max-width:820px;
  color:var(--muted);
  font-size:clamp(21px,2.1vw,28px);
  line-height:1.38;
  letter-spacing:-.02em;
  font-weight:500;
}
.hero-actions{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:18px;
  margin-top:34px;
}
.primary-link,.secondary-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:19px;
  color:var(--blue);
  font-weight:500;
}
.primary-link:after,.secondary-link:after{content:"›";font-size:24px;line-height:1}
.hero-visual{
  position:relative;
  max-width:1160px;
  margin:0 auto;
}
.hero-visual:before{
  content:"";
  position:absolute;
  inset:6% 10% -3%;
  background:radial-gradient(circle,rgba(0,113,227,.12),transparent 58%);
  filter:blur(40px);
}
.hero-visual img{
  position:relative;
  width:100%;
  border-radius:34px;
  box-shadow:var(--shadow);
}
.section{padding:92px 0}
.section-head{text-align:center;max-width:850px;margin:0 auto 46px}
.section-label{
  display:block;
  margin-bottom:12px;
  color:var(--green);
  font-size:18px;
  font-weight:700;
  letter-spacing:-.01em;
}
.section-title{
  margin:0;
  font-size:clamp(42px,6vw,82px);
  line-height:.96;
  letter-spacing:-.065em;
  font-weight:800;
}
.section-sub{
  margin:18px auto 0;
  max-width:720px;
  color:var(--muted);
  font-size:21px;
  line-height:1.42;
  letter-spacing:-.02em;
}
.feature-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.feature-card{
  background:var(--surface);
  border-radius:28px;
  padding:28px;
  min-height:260px;
  box-shadow:0 10px 34px rgba(0,0,0,.055);
}
.feature-icon{
  width:50px;height:50px;
  display:grid;place-items:center;
  border-radius:16px;
  background:#f2f2f4;
  font-size:25px;
  margin-bottom:20px;
}
.feature-card h3{
  margin:0 0 10px;
  font-size:23px;
  line-height:1.1;
  letter-spacing:-.035em;
}
.feature-card p{
  margin:0;
  color:var(--muted);
  line-height:1.55;
  font-size:16px;
}
.product-stack{display:grid;gap:26px}
.product-card{
  background:var(--surface);
  border-radius:44px;
  padding:34px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:40px;
  align-items:center;
  box-shadow:0 12px 40px rgba(0,0,0,.06);
  overflow:hidden;
}
.product-copy h3{
  margin:0 0 16px;
  font-size:clamp(34px,4.4vw,64px);
  line-height:.98;
  letter-spacing:-.06em;
}
.product-copy p{
  margin:0 0 24px;
  color:var(--muted);
  font-size:20px;
  line-height:1.45;
  letter-spacing:-.02em;
}
.checks{display:grid;gap:12px}
.checks div{color:#3a3a3c;font-size:17px;line-height:1.4}
.checks span{color:var(--green);font-weight:800;margin-right:8px}
.product-media{
  background:linear-gradient(180deg,#f7f7f9,#eeeeF2);
  border-radius:34px;
  padding:18px;
}
.product-media img{
  width:100%;
  border-radius:26px;
  box-shadow:0 18px 52px rgba(0,0,0,.10);
}
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
  margin-top:20px;
}
.step{
  background:#fff;
  border-radius:28px;
  padding:26px;
  box-shadow:0 10px 34px rgba(0,0,0,.055);
}
.step-num{color:var(--green);font-weight:800;margin-bottom:14px}
.step h3{margin:0 0 10px;font-size:26px;letter-spacing:-.04em}
.step p{margin:0;color:var(--muted);line-height:1.55}
.faq-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px;
}
.faq-card,.support-card{
  background:var(--surface);
  border-radius:30px;
  padding:30px;
  box-shadow:0 10px 34px rgba(0,0,0,.055);
}
.faq-card h3,.support-card h3{margin:0 0 12px;font-size:25px;letter-spacing:-.04em}
.faq-card p,.support-card p{margin:0;color:var(--muted);font-size:17px;line-height:1.55}
.support-wrap{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.email{
  display:inline-flex;
  margin-top:20px;
  padding:13px 17px;
  border-radius:999px;
  background:var(--blue);
  color:#fff;
  font-weight:700;
}
.footer{
  padding:46px 0 60px;
  color:var(--muted);
  border-top:1px solid var(--line);
}
.footer-inner{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  align-items:center;
  gap:18px;
}
.footer-links{display:flex;gap:20px}
.footer a:hover{color:var(--ink)}
.legal-page{padding:76px 0 100px}
.legal-hero{max-width:860px;margin:0 auto 28px;text-align:center}
.legal-hero h1{
  margin:0;
  font-size:clamp(48px,8vw,92px);
  line-height:.95;
  letter-spacing:-.07em;
}
.legal-hero p{
  margin:18px auto 0;
  max-width:700px;
  color:var(--muted);
  font-size:21px;
  line-height:1.45;
}
.legal-card{
  max-width:860px;
  margin:18px auto;
  background:#fff;
  border-radius:30px;
  padding:32px;
  box-shadow:0 10px 34px rgba(0,0,0,.055);
}
.legal-card h2{margin:0 0 12px;font-size:28px;letter-spacing:-.04em}
.legal-card p,.legal-card li{color:var(--muted);line-height:1.65;font-size:17px}
.legal-card ul{margin:0;padding-left:22px}
@media(max-width:980px){
  .links{display:none}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .product-card,.support-wrap{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr}
}
@media(max-width:640px){
  .container{width:min(100% - 28px,1180px)}
  .nav-cta{display:none}
  .hero{padding:60px 0 64px}
  .hero-copy{margin-bottom:36px}
  .feature-grid{grid-template-columns:1fr}
  .product-card,.support-card,.faq-card,.legal-card{padding:24px;border-radius:28px}
  .hero h1{font-size:58px}
  .section{padding:72px 0}
  .section-title{font-size:46px}
  .footer-inner{align-items:flex-start}
}