:root{
  --navy:#0f172a;
  --blue:#2563eb;
  --green:#16a34a;
  --bg:#f8fafc;
  --card:#ffffff;
  --text:#1e293b;
  --muted:#64748b;
  --border:#e2e8f0;
  --radius:10px;
}
*{box-sizing:border-box;margin:0;padding:0;}
body{
  font-family:'Segoe UI',Arial,Helvetica,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
}
a{color:var(--blue);text-decoration:none;}
a:hover{text-decoration:underline;}
header.site-header{
  background:var(--navy);
  color:#fff;
  padding:16px 24px;
}
.header-inner{
  max-width:1100px;
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
}
.logo{
  font-size:1.4rem;
  font-weight:700;
  color:#fff;
}
.logo span{color:var(--green);}
nav ul{
  list-style:none;
  display:flex;
  gap:4px;
  flex-wrap:wrap;
  align-items:center;
}
nav a{color:#e2e8f0;font-weight:500;}
nav a:hover{color:#fff;text-decoration:underline;}

/* ---- Professional dropdown nav ---- */
.main-nav{list-style:none;display:flex;gap:2px;flex-wrap:wrap;align-items:center;}
.main-nav > li{position:relative;}
.main-nav > li > a,
.dropdown-toggle{
  display:inline-flex;
  align-items:center;
  gap:5px;
  color:#e2e8f0;
  font-weight:500;
  font-size:.96rem;
  padding:9px 13px;
  border-radius:7px;
  background:transparent;
  border:none;
  font-family:inherit;
  cursor:pointer;
  transition:background .2s ease, color .2s ease, transform .15s ease;
}
.main-nav > li > a:hover,
.dropdown-toggle:hover,
.dropdown.open > .dropdown-toggle{
  color:#fff;
  background:rgba(255,255,255,.1);
  text-decoration:none;
}
.dropdown-toggle .caret{
  font-size:.7rem;
  transition:transform .2s ease;
}
.dropdown.open .dropdown-toggle .caret,
.dropdown:hover .dropdown-toggle .caret{
  transform:rotate(180deg);
}
.dropdown-menu{
  position:absolute;
  top:100%;
  left:0;
  margin-top:6px;
  background:#fff;
  min-width:230px;
  border-radius:12px;
  box-shadow:0 16px 40px rgba(15,23,42,.28);
  padding:8px;
  list-style:none;
  opacity:0;
  visibility:hidden;
  transform:translateY(6px);
  transition:opacity .18s ease, transform .18s ease, visibility .18s;
  z-index:80;
}
.dropdown:hover .dropdown-menu,
.dropdown.open .dropdown-menu{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
.dropdown-menu li a{
  display:block;
  padding:9px 12px;
  border-radius:8px;
  color:var(--navy);
  font-weight:500;
  font-size:.9rem;
  transition:background .15s ease, color .15s ease, padding-left .15s ease;
}
.dropdown-menu li a:hover{
  background:#eff6ff;
  color:var(--blue);
  text-decoration:none;
  padding-left:16px;
}
@media (max-width:700px){
  .dropdown-menu{position:static;box-shadow:none;opacity:1;visibility:visible;transform:none;display:none;margin-top:4px;background:rgba(255,255,255,.06);}
  .dropdown.open .dropdown-menu{display:block;}
}
main{
  max-width:1100px;
  margin:0 auto;
  padding:32px 20px;
  animation:fadeInUp .55s ease both;
}

@keyframes fadeInUp{
  from{opacity:0;transform:translateY(14px);}
  to{opacity:1;transform:translateY(0);}
}
@keyframes fadeIn{
  from{opacity:0;}
  to{opacity:1;}
}
@keyframes gradientShift{
  0%{background-position:0% 50%;}
  50%{background-position:100% 50%;}
  100%{background-position:0% 50%;}
}
@keyframes floatSlow{
  0%,100%{transform:translateY(0) rotate(0deg);}
  50%{transform:translateY(-10px) rotate(2deg);}
}
.hero{
  text-align:center;
  padding:24px 12px 40px;
}
.hero h1{
  font-size:2.1rem;
  margin-bottom:12px;
  color:var(--navy);
}
.hero p{
  color:var(--muted);
  max-width:640px;
  margin:0 auto;
  font-size:1.05rem;
}
.hero-pro{
  position:relative;
  overflow:hidden;
  text-align:center;
  padding:70px 20px 80px;
  margin:-32px -20px 40px;
  border-radius:0 0 22px 22px;
  color:#fff;
  background-color:#0f172a;
  background-image:
    linear-gradient(120deg, rgba(37,99,235,.6) 0%, rgba(22,163,74,.35) 30%, rgba(15,23,42,.94) 60%, #0f172a 100%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='44' height='44'%3E%3Crect width='44' height='44' fill='none' stroke='rgba(255,255,255,0.07)' stroke-width='1'/%3E%3C/svg%3E");
  background-size:220% 220%, 44px 44px;
  animation:gradientShift 14s ease infinite;
}
.hero-pro .badge{
  display:inline-block;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.25);
  color:#e2e8f0;
  font-size:.78rem;
  font-weight:600;
  letter-spacing:.04em;
  text-transform:uppercase;
  padding:6px 14px;
  border-radius:20px;
  margin-bottom:18px;
}
.hero-pro h1{
  color:#fff;
  font-size:2.4rem;
  margin-bottom:14px;
  position:relative;
  z-index:2;
}
.hero-pro p{
  color:#cbd5e1;
  max-width:640px;
  margin:0 auto;
  font-size:1.08rem;
  position:relative;
  z-index:2;
}
.hero-calc-icon{
  position:absolute;
  right:-40px;
  bottom:-50px;
  width:260px;
  height:260px;
  opacity:.14;
  z-index:1;
  pointer-events:none;
  animation:floatSlow 8s ease-in-out infinite;
}
.hero-calc-icon.left{
  right:auto;
  left:-60px;
  top:-40px;
  bottom:auto;
  width:200px;
  height:200px;
  animation:floatSlow 10s ease-in-out infinite reverse;
}
@media (max-width:700px){
  .hero-calc-icon{display:none;}
}
.tool-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:20px;
  margin-top:32px;
}
.tool-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:22px;
  position:relative;
  overflow:hidden;
  transition:box-shadow .2s ease, transform .2s ease, border-color .2s ease;
  animation:fadeInUp .5s ease both;
}
.tool-card::before{
  content:"";
  position:absolute;
  top:0; left:0; right:0;
  height:3px;
  background:linear-gradient(90deg, var(--blue), var(--green));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s ease;
}
.tool-card:hover{
  box-shadow:0 12px 28px rgba(15,23,42,.12);
  transform:translateY(-4px);
  border-color:#bfdbfe;
}
.tool-card:hover::before{transform:scaleX(1);}
.tool-grid .tool-card:nth-child(1){animation-delay:.02s;}
.tool-grid .tool-card:nth-child(2){animation-delay:.06s;}
.tool-grid .tool-card:nth-child(3){animation-delay:.1s;}
.tool-grid .tool-card:nth-child(4){animation-delay:.14s;}
.tool-grid .tool-card:nth-child(5){animation-delay:.18s;}
.tool-grid .tool-card:nth-child(6){animation-delay:.22s;}
.tool-grid .tool-card:nth-child(7){animation-delay:.26s;}
.tool-grid .tool-card:nth-child(8){animation-delay:.3s;}
.tool-grid .tool-card:nth-child(9){animation-delay:.34s;}
.tool-card h3{margin-bottom:8px;color:var(--navy);}
.tool-card p{color:var(--muted);font-size:.95rem;margin-bottom:14px;}
.btn{
  display:inline-block;
  background:linear-gradient(135deg, var(--blue) 0%, #1d4ed8 100%);
  color:#fff;
  padding:10px 18px;
  border-radius:9px;
  font-weight:600;
  border:none;
  cursor:pointer;
  font-size:.95rem;
  box-shadow:0 4px 14px rgba(37,99,235,.28);
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.btn:hover{
  background:linear-gradient(135deg, #3b82f6 0%, var(--blue) 100%);
  text-decoration:none;
  transform:translateY(-2px);
  box-shadow:0 8px 22px rgba(37,99,235,.38);
}
.btn:active{transform:translateY(0);box-shadow:0 3px 10px rgba(37,99,235,.3);}
.calc-wrap{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:28px;
  margin-top:8px;
}
@media (max-width:800px){
  .calc-wrap{grid-template-columns:1fr;}
}
.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:24px;
  transition:box-shadow .2s ease;
}
.card:focus-within,
.card:hover{
  box-shadow:0 10px 26px rgba(15,23,42,.08);
}
.field{margin-bottom:16px;}
.field label{
  display:block;
  font-weight:600;
  margin-bottom:6px;
  font-size:.92rem;
}
.field input,.field select{
  width:100%;
  padding:10px 12px;
  border:1px solid var(--border);
  border-radius:8px;
  font-size:1rem;
}
.result-box{
  background:#f0fdf4;
  border:1px solid #bbf7d0;
  border-radius:var(--radius);
  padding:20px;
}
.result-row{
  display:flex;
  justify-content:space-between;
  padding:8px 0;
  border-bottom:1px dashed #d1fae5;
  font-size:.98rem;
}
.result-row:last-child{border-bottom:none;}
.result-row .val{font-weight:700;color:var(--navy);}
.result-headline{
  font-size:1.6rem;
  font-weight:800;
  color:var(--green);
  margin-bottom:14px;
}
.disclaimer{
  font-size:.85rem;
  color:var(--muted);
  background:#fffbeb;
  border:1px solid #fde68a;
  border-radius:8px;
  padding:12px 14px;
  margin-top:18px;
}
.content-block{
  margin-top:40px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:24px;
}
.content-block h2{color:var(--navy);margin-bottom:10px;font-size:1.3rem;}
.content-block p{margin-bottom:12px;color:var(--text);}
.ad-slot{
  border:1px dashed #cbd5e1;
  background:#f1f5f9;
  color:var(--muted);
  text-align:center;
  padding:28px 12px;
  border-radius:8px;
  font-size:.85rem;
  margin:28px 0;
}
.related{margin-top:28px;}
.related h3{margin-bottom:10px;color:var(--navy);font-size:1.05rem;}
.related ul{list-style:none;display:flex;flex-wrap:wrap;gap:12px;}
.related a{
  background:#eff6ff;
  border:1px solid #bfdbfe;
  padding:7px 12px;
  border-radius:20px;
  font-size:.88rem;
}
footer{
  background:var(--navy);
  color:#cbd5e1;
  margin-top:60px;
  padding:32px 20px;
}
.footer-inner{
  max-width:1100px;
  margin:0 auto;
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:16px;
  font-size:.9rem;
}
.footer-inner a{color:#93c5fd;}
.legal-page h1{color:var(--navy);margin-bottom:16px;}
.legal-page h2{color:var(--navy);margin:20px 0 8px;font-size:1.15rem;}
.legal-page p, .legal-page li{color:var(--text);margin-bottom:10px;}
.legal-page ul{padding-left:22px;}

.faq-block{margin-top:28px;}
.faq-block h2{color:var(--navy);margin-bottom:14px;font-size:1.3rem;}
.faq-item{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:8px;
  margin-bottom:10px;
  padding:4px 18px;
}
.faq-item summary{
  cursor:pointer;
  font-weight:600;
  padding:12px 0;
  color:var(--navy);
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"+ ";
  color:var(--blue);
  font-weight:800;
}
.faq-item[open] summary::before{
  content:"\2212 ";
}
.faq-item p{
  color:var(--muted);
  padding-bottom:14px;
  margin:0;
}