:root{
  --b:#2563EB;
  --bd:#1E40AF;
  --bl:#EFF6FF;
  --b2:#60A5FA;
  --b3:#3B82F6;
  --bg:linear-gradient(135deg,#1E40AF 0%,#3B82F6 50%,#60A5FA 100%);
  --bg2:linear-gradient(135deg,#2563EB 0%,#60A5FA 100%);
  --d:#0F172A;
  --g:#64748B;
  --l:#F1F5F9;
  --w:#FFF;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Be Vietnam Pro',sans-serif;
  color:var(--d);
  background:var(--w);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  line-height:1.7;
}
body.zh{font-family:'Noto Sans SC','Be Vietnam Pro',sans-serif}

/* ── Navigation ── */
nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(37,99,235,.08);
}
.nv{
  max-width:1080px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 32px;
}
.nl{display:flex;align-items:center;gap:12px;text-decoration:none}
.nl span{
  font-weight:900;font-size:24px;
  background:var(--bg2);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
  letter-spacing:-.5px;
}
.ls{display:flex;gap:3px;background:var(--l);border-radius:99px;padding:4px}
.lb{
  border:none;background:none;
  padding:8px 18px;border-radius:99px;
  cursor:pointer;font-size:15px;font-weight:600;
  color:var(--g);transition:.2s;font-family:inherit;
}
.lb.on{background:var(--bg2);color:#fff}

/* ── Hero ── */
.hero{
  min-height:auto;
  display:flex;align-items:center;justify-content:center;
  padding:140px 32px 30px;text-align:center;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%,rgba(37,99,235,.10),transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 10%,rgba(96,165,250,.08),transparent 50%);
}
.hero-inner{max-width:720px}
.hero h1{
  font-size:clamp(32px,6vw,52px);
  font-weight:900;line-height:1.12;
  letter-spacing:-1.5px;margin-bottom:16px;
}
.hero h1 em{
  font-style:normal;
  background:var(--bg);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}
.hero p{
  color:var(--g);font-size:19px;line-height:1.6;
  max-width:520px;margin:0 auto;
}

/* ── Hero email button ── */
.hero-email-btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-top:12px;
  padding:14px 28px;
  background:var(--bg2);
  color:#fff;
  font-size:18px;
  font-weight:700;
  text-decoration:none;
  border-radius:99px;
  transition:0.3s;
  box-shadow:0 4px 16px rgba(37,99,235,0.3);
}
.hero-email-btn:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(37,99,235,0.4);
}
.hero-email-btn span{
  font-size:22px;
}

/* ── Service info in hero ── */
.hero .service-info{
  display:flex;
  justify-content:center;
  gap:32px;
  flex-wrap:wrap;
}
.hero .service-info p{
  font-size:14px;
  color:var(--g);
  margin:0;
  padding:8px 16px;
  background:rgba(37,99,235,0.05);
  border-radius:99px;
}

/* ── Meta badges ── */
.meta-row{
  display:flex;justify-content:center;gap:10px;flex-wrap:wrap;
  margin-top:28px;
}
.meta{
  display:inline-block;
  background:var(--l);color:var(--b);
  padding:8px 18px;border-radius:99px;
  font-size:14px;font-weight:600;
}

/* ── Content wrapper ── */
.wrap{
  max-width:1080px;margin:0 auto;
  padding:20px 32px 80px;
}

/* ── Two-column layout for support page ── */
.content-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
  align-items:start;
}
.content-grid .card.accent,
.content-grid .card:not(.faq-grid){
  margin-bottom:0;
}
/* Make first two cards equal height */
.content-grid > .card:nth-child(1),
.content-grid > .card:nth-child(2){
  align-self:stretch;
}
.content-grid .faq-grid{
  grid-column:1 / -1;
}
.content-grid .links-card{
  grid-column:1 / -1;
}

/* ── Section cards ── */
.card{
  padding:16px 24px;
  border-radius:16px;
  background:var(--l);
  transition:.25s;
  border:1px solid transparent;
  margin-bottom:16px;
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:0 12px 32px rgba(37,99,235,.10);
  border-color:rgba(37,99,235,.1);
}
.card-icon{
  font-size:36px;
  margin-bottom:18px;
}
.card h2{
  font-size:18px;
  font-weight:700;
  margin-bottom:10px;
  letter-spacing:-.3px;
  color:var(--d);
}
.card h3{
  font-size:15px;font-weight:700;
  margin-bottom:6px;color:var(--d);
}
.card p,.card li{
  font-size:15px;color:var(--g);line-height:1.6;
}
.card ul{padding-left:20px;margin-top:6px}
.card li{margin-bottom:4px}

/* ── Links card - horizontal layout ── */
.links-card ul{
  display:flex;
  justify-content:space-around;
  padding-left:0;
  margin-top:12px;
  list-style:none;
}
.links-card li{
  margin:0;
}
.links-card a{
  display:inline-block;
  padding:8px 16px;
  background:rgba(37,99,235,0.05);
  border-radius:8px;
  color:var(--b);
  font-weight:600;
  transition:0.2s;
}
.links-card a:hover{
  background:var(--b);
  color:#fff;
}

/* ── Quick links bar ── */
.quick-links-bar{
  display:flex;
  justify-content:space-between;
  gap:0;
  padding:24px 0;
  grid-column:1 / -1;
  border-top:1px solid rgba(37,99,235,0.08);
}
.quick-links-bar a{
  padding:10px 20px;
  background:rgba(37,99,235,0.05);
  border-radius:8px;
  color:var(--b);
  font-weight:600;
  text-decoration:none;
  transition:0.2s;
  font-size:15px;
  flex:1;
  text-align:center;
  max-width:320px;
}
.quick-links-bar a:hover{
  background:var(--b);
  color:#fff;
}

/* ── Contact card - compact layout ── */
.contact-card h2{
  margin-bottom:16px;
}
.contact-card .contact-item{
  display:flex;
  align-items:center;
  gap:12px;
  padding:12px 0;
  border-bottom:1px solid rgba(37,99,235,0.08);
}
.contact-card .contact-item:last-child{
  border-bottom:none;
}
.contact-card .contact-item strong{
  display:block;
  font-size:14px;
  color:var(--d);
  margin-bottom:2px;
}
.contact-card .contact-item a{
  font-size:15px;
  color:var(--b);
  font-weight:500;
}
.contact-card .service-info{
  margin-top:16px;
  padding:12px;
  background:rgba(37,99,235,0.05);
  border-radius:8px;
}
.contact-card .service-info p{
  margin:6px 0;
  font-size:14px;
}

/* ── Highlight card (accent top border) ── */
.card.accent{
  border-top:3px solid var(--b);
}

/* ── Details / FAQ ── */
details{
  background:var(--l);
  border:1px solid transparent;
  border-radius:16px;
  padding:18px 22px;
  margin-bottom:10px;
  transition:.25s;
}
details:hover{
  transform:translateY(-4px);
  box-shadow:0 12px 32px rgba(37,99,235,.10);
  border-color:rgba(37,99,235,.1);
}
details summary{
  font-weight:700;font-size:16px;
  cursor:pointer;color:var(--d);
  list-style:none;
  display:flex;align-items:center;justify-content:space-between;
}
details summary::after{
  content:"▶";
  font-size:10px;
  font-weight:400;
  color:var(--b);
  transition:transform .2s;
  display:inline-block;
}
details[open] summary::after{
  transform:rotate(90deg);
}
details summary::-webkit-details-marker{display:none}
details p{
  margin-top:12px;color:#475569;font-size:15px;line-height:1.6;
}
details ul{
  margin-top:10px;padding-left:20px;
}
details li{
  color:#475569;font-size:15px;line-height:1.6;margin-bottom:4px;
}

/* ── CTA / mail button ── */
.cta-btn{
  display:inline-block;
  background:var(--bg2);color:#fff;
  padding:16px 36px;border-radius:99px;
  text-decoration:none;font-weight:700;font-size:17px;
  transition:.25s;letter-spacing:-.2px;
  box-shadow:0 6px 20px rgba(37,99,235,.25);
  margin-top:20px;
}
.cta-btn:hover{
  transform:translateY(-3px);
  box-shadow:0 14px 36px rgba(37,99,235,.4);
}

/* ── Form styles (delete-account) ── */
.form-group{margin-bottom:20px}
.form-group label{
  display:block;font-weight:700;font-size:15px;
  margin-bottom:8px;color:var(--d);
}
.form-group input,.form-group textarea,.form-group select{
  width:100%;padding:14px 18px;
  border:1.5px solid #E2E8F0;border-radius:14px;
  font-size:16px;font-family:inherit;
  transition:.2s;background:var(--w);
  color:var(--d);
}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{
  outline:none;border-color:var(--b);
  box-shadow:0 0 0 3px rgba(37,99,235,.1);
}
.form-group textarea{resize:vertical;min-height:100px}
.form-note{
  font-size:14px;color:var(--g);margin-top:6px;
}
.form-card{
  background:var(--l);
  border:1px solid transparent;
  border-radius:16px;
  padding:36px 28px;
  margin-bottom:24px;
  transition:.25s;
}
.form-card:hover{
  transform:translateY(-4px);
  box-shadow:0 12px 32px rgba(37,99,235,.10);
  border-color:rgba(37,99,235,.1);
}
.form-card h2{margin-bottom:20px}

/* ── Step list ── */
.steps{
  display:flex;flex-direction:column;gap:20px;
  margin:20px 0;
}
.step{
  display:flex;gap:16px;align-items:flex-start;
}
.step-num{
  width:40px;height:40px;border-radius:50%;
  background:var(--bg2);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:900;font-size:18px;flex-shrink:0;
  box-shadow:0 4px 12px rgba(37,99,235,.3);
}
.step-content h3{margin-bottom:4px}
.step-content p{color:#475569;font-size:15px;line-height:1.7}

/* ── Footer ── */
footer{
  padding:36px 32px;text-align:center;
  color:var(--g);font-size:15px;
  border-top:1px solid rgba(37,99,235,.06);
}
footer a{color:var(--b);text-decoration:none}
footer a:hover{text-decoration:underline}

/* ── Language toggle visibility ── */
[data-lang]{display:none}
[data-lang].active{display:block}
[data-lang].active.content-grid{display:grid}
.hero [data-lang].active{display:flex;flex-direction:column;align-items:center}
.toc-list [data-lang].active,
.quick-links-bar [data-lang].active{display:inline}

/* ── Responsive ── */
@media(max-width:768px){
  .nv{padding:14px 20px}
  .hero{padding:120px 20px 48px}
  .wrap{padding:32px 20px 60px}
  .content-grid{grid-template-columns:1fr}
  .card{padding:22px 18px}
  .form-card{padding:22px 18px}
  details{padding:14px 16px}
  .hero-email-btn{
    padding:12px 24px;
    font-size:16px;
  }
  .hero .service-info{
    gap:12px;
  }
  .hero .service-info p{
    font-size:13px;
    padding:6px 12px;
  }
  .links-card ul{
    flex-direction:column;
    align-items:stretch;
    gap:8px;
  }
  .links-card a{
    text-align:center;
  }
  .quick-links-bar{
    flex-direction:column;
    align-items:stretch;
    gap:10px;
  }
  .quick-links-bar a{
    text-align:center;
  }
}

/* ── Animations ── */
@keyframes fadeInUp{
  from{opacity:0;transform:translateY(20px)}
  to{opacity:1;transform:translateY(0)}
}
.hero h1{animation:fadeInUp .7s ease-out both}
.hero p{animation:fadeInUp .7s ease-out .1s both}
.meta-row{animation:fadeInUp .7s ease-out .2s both}
.card,.form-card,details{
  animation:fadeInUp .5s ease-out both;
}