:root{
  color-scheme: light dark;

  --navy:#0a3a78;
  --navy-2:#072c5c;
  --sky:#35bdf6;
  --sky-2:#7bd8ff;
  --white:#ffffff;

  --radius:24px;
  --radius-sm:18px;
  --max:1200px;

  --shadow:0 18px 42px rgba(18, 36, 56, .10);
  --shadow-soft:0 10px 24px rgba(18, 36, 56, .06);

  --page-bg:
    radial-gradient(circle at top left, rgba(53,189,246,.08), transparent 26%),
    radial-gradient(circle at top right, rgba(10,58,120,.06), transparent 30%),
    linear-gradient(180deg, #edf4f8 0%, #e6eef4 100%);

  --text:#1b344d;
  --text-soft:#244663;
  --muted:#6a8197;

  --line:rgba(27,52,77,.10);
  --line-2:rgba(27,52,77,.06);

  --card-bg:linear-gradient(180deg, rgba(255,255,255,.74), rgba(247,250,253,.68));
  --card-solid:rgba(255,255,255,.88);
  --panel-bg:rgba(255,255,255,.62);
  --topbar-bg:rgba(241,247,251,.82);

  --nav-text:#244663;
  --nav-hover:#0a3a78;

  --soft-bg:rgba(10,58,120,.05);
  --soft-bg-2:rgba(53,189,246,.10);

  --hero-overlay-a:rgba(9,32,54,.50);
  --hero-overlay-b:rgba(9,32,54,.18);

  --input-bg:rgba(255,255,255,.88);
  --input-border:rgba(27,52,77,.12);

  --badge-bg:rgba(53,189,246,.10);
  --badge-border:rgba(53,189,246,.20);

  --success-bg:rgba(16,185,129,.10);
  --success-border:rgba(16,185,129,.20);
  --warning-bg:rgba(245,158,11,.12);
  --warning-border:rgba(245,158,11,.22);
  --danger-bg:rgba(239,68,68,.10);
  --danger-border:rgba(239,68,68,.20);
}

@media (prefers-color-scheme: dark){
  :root{
    --shadow:0 20px 48px rgba(0,0,0,.24);
    --shadow-soft:0 10px 24px rgba(0,0,0,.16);

    --page-bg:
      radial-gradient(circle at top left, rgba(53,189,246,.08), transparent 24%),
      radial-gradient(circle at top right, rgba(10,58,120,.14), transparent 28%),
      linear-gradient(180deg, #101c28 0%, #162634 100%);

    --text:#e8f2fb;
    --text-soft:#d7e7f4;
    --muted:#9db5c8;

    --line:rgba(123,216,255,.10);
    --line-2:rgba(123,216,255,.06);

    --card-bg:linear-gradient(180deg, rgba(22,36,50,.78), rgba(18,31,44,.74));
    --card-solid:rgba(20,34,48,.90);
    --panel-bg:rgba(18,31,44,.68);
    --topbar-bg:rgba(16,28,40,.84);

    --nav-text:#e8f2fb;
    --nav-hover:#7bd8ff;

    --soft-bg:rgba(123,216,255,.05);
    --soft-bg-2:rgba(53,189,246,.12);

    --hero-overlay-a:rgba(8,22,38,.56);
    --hero-overlay-b:rgba(8,22,38,.22);

    --input-bg:rgba(18,32,46,.88);
    --input-border:rgba(123,216,255,.12);

    --badge-bg:rgba(53,189,246,.12);
    --badge-border:rgba(123,216,255,.18);

    --success-bg:rgba(16,185,129,.12);
    --success-border:rgba(16,185,129,.24);
    --warning-bg:rgba(245,158,11,.14);
    --warning-border:rgba(245,158,11,.24);
    --danger-bg:rgba(239,68,68,.12);
    --danger-border:rgba(239,68,68,.24);
  }
}

*{
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  margin:0;
  font-family:Arial, Helvetica, sans-serif;
  color:var(--text);
  background:var(--page-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{
  max-width:100%;
  display:block;
}

a{
  color:inherit;
  text-decoration:none;
}

button,
input,
textarea,
select{
  font:inherit;
}

.container{
  width:min(calc(100% - 32px), var(--max));
  margin:0 auto;
}

.section{
  padding:82px 0;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:52px;
  padding:0 22px;
  border-radius:999px;
  font-weight:800;
  transition:transform .2s ease, filter .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
  border:1px solid transparent;
  cursor:pointer;
  appearance:none;
  -webkit-appearance:none;
}

.btn-primary{
  color:var(--white);
  background:linear-gradient(135deg, var(--sky), var(--navy));
  box-shadow:0 12px 26px rgba(53,189,246,.22);
}

.btn-primary:hover{
  transform:translateY(-1px);
  filter:brightness(1.04);
}

.btn-secondary{
  color:var(--text);
  border-color:var(--line);
  background:var(--soft-bg);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}

.btn-secondary:hover{
  background:var(--soft-bg-2);
  transform:translateY(-1px);
}

.topbar{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--topbar-bg);
  border-bottom:1px solid var(--line-2);
  backdrop-filter:saturate(140%) blur(14px);
  -webkit-backdrop-filter:saturate(140%) blur(14px);
}

.topbar::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(53,189,246,.24), transparent);
  pointer-events:none;
}

.topbar-inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:72px;
}

.brand{
  display:flex;
  align-items:center;
  gap:14px;
  min-width:0;
  flex-shrink:0;
}

.brand img{
  height:34px;
  width:auto;
  max-width:none;
  display:block;
}

.nav{
  display:flex;
  align-items:center;
  gap:24px;
  flex-wrap:wrap;
  justify-content:center;
}

.nav a{
  font-weight:700;
  color:var(--nav-text);
  opacity:.94;
  position:relative;
  font-size:.96rem;
  transition:color .2s ease, opacity .2s ease;
}

.nav a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-8px;
  width:100%;
  height:2px;
  border-radius:999px;
  background:linear-gradient(135deg, var(--sky), var(--navy));
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .2s ease;
}

.nav a:hover,
.nav a.active{
  color:var(--nav-hover);
}

.nav a.active::after,
.nav a:hover::after{
  transform:scaleX(1);
}

.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}

.mobile-toggle{
  display:none;
  width:46px;
  height:46px;
  border-radius:14px;
  border:1px solid var(--line);
  background:var(--soft-bg);
  color:var(--text);
  font-size:1.2rem;
  cursor:pointer;
  transition:.2s ease;
  appearance:none;
  -webkit-appearance:none;
}

.mobile-toggle:hover{
  background:var(--soft-bg-2);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:10px 14px;
  border-radius:999px;
  background:var(--badge-bg);
  border:1px solid var(--badge-border);
  color:var(--nav-hover);
  font-size:.9rem;
  font-weight:800;
  letter-spacing:.02em;
  text-transform:uppercase;
}

.card-surface{
  background:var(--card-bg);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}

input,
textarea,
select{
  width:100%;
  border:1px solid var(--input-border);
  background:var(--input-bg);
  color:var(--text);
  border-radius:14px;
  padding:14px;
  font-size:16px;
  outline:none;
  appearance:none;
  -webkit-appearance:none;
  box-shadow:none;
}

input:focus,
textarea:focus,
select:focus{
  border-color:var(--sky);
  box-shadow:0 0 0 4px rgba(53,189,246,.14);
}

input::placeholder,
textarea::placeholder{
  color:var(--muted);
}

.reveal{
  opacity:0;
  transform:translateY(30px);
  transition:opacity .7s ease, transform .7s ease;
}

.reveal.in-view{
  opacity:1;
  transform:none;
}

.footer{
  padding:70px 0 26px;
  border-top:1px solid var(--line-2);
}

.footer-grid{
  display:grid;
  grid-template-columns:1.2fr .9fr .9fr;
  gap:26px;
}

.footer-card{
  background:var(--card-bg);
  border:1px solid var(--line);
  border-radius:24px;
  padding:24px;
  box-shadow:var(--shadow-soft);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}

.footer-logo{
  width:auto;
  height:34px;
  max-width:none;
  margin-bottom:14px;
}

.footer-card h4{
  margin:0 0 14px;
  font-size:1.08rem;
  color:var(--text);
}

.footer-card p,
.footer-card li,
.footer-card a{
  color:var(--muted);
  line-height:1.7;
}

.footer-card ul{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:8px;
}

.footer-bottom{
  text-align:center;
  color:var(--muted);
  font-size:.92rem;
  margin-top:22px;
}

.notice-success{
  background:var(--success-bg);
  border:1px solid var(--success-border);
  border-radius:16px;
  padding:14px 16px;
}

.notice-warning{
  background:var(--warning-bg);
  border:1px solid var(--warning-border);
  border-radius:16px;
  padding:14px 16px;
}

.notice-danger{
  background:var(--danger-bg);
  border:1px solid var(--danger-border);
  border-radius:16px;
  padding:14px 16px;
}

@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .topbar{
    background:var(--card-solid);
  }

  .btn-secondary,
  .card-surface,
  .footer-card,
  .nav{
    backdrop-filter:none;
    -webkit-backdrop-filter:none;
  }

  .card-surface,
  .footer-card,
  .nav{
    background:var(--card-solid);
  }
}

@media (max-width: 900px){
  .topbar-inner{
    min-height:72px;
  }

  .mobile-toggle{
    display:inline-grid;
    place-items:center;
  }

  .nav{
    position:absolute;
    top:72px;
    left:16px;
    right:16px;
    display:none;
    flex-direction:column;
    align-items:flex-start;
    gap:16px;
    padding:18px;
    border-radius:22px;
    background:var(--card-solid);
    border:1px solid var(--line);
    box-shadow:var(--shadow);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
  }

  .nav a::after{
    bottom:-4px;
  }

  .nav.open{
    display:flex;
  }

  .header-actions .btn{
    display:none;
  }
}

@media (max-width: 640px){
  .section{
    padding:64px 0;
  }

  .container{
    width:min(calc(100% - 20px), var(--max));
  }

  .footer-grid{
    grid-template-columns:1fr;
  }

  .brand img{
    height:28px;
  }

  .footer-logo{
    height:30px;
  }
}