:root{
  --bg:#0a0e17; 
  --panel:rgba(15,20,32,0.4); 
  --text:#e5e7eb; 
  --muted:#9ca3af;
  --accent:#5ea3ff; 
  --accent2:#34d399; 
  --border:rgba(26,35,50,0.3);
  --sidebar:260px; 
  --logo-size:140px;
}

* { 
  box-sizing:border-box; 
  margin:0;
  padding:0;
}

html,body {
  background:var(--bg); 
  color:var(--text);
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}

a { 
  color:var(--accent); 
  text-decoration:none; 
  transition:color 0.2s; 
}

a:hover { 
  color:#7eb9ff; 
}

/* Sidebar Navigation */
.sidebar {
  position:fixed; 
  inset:0 auto 0 0; 
  width:var(--sidebar);
  background:rgba(10,14,23,.98);
  border-right:1px solid var(--border);
  padding:32px 24px;
  z-index:40;
  backdrop-filter:blur(12px);
}

.brand {
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:14px;
  margin-bottom:32px;
  padding-bottom:24px;
  border-bottom:1px solid var(--border);
}

.brand img {
  height:var(--logo-size);
  width:auto;
  display:block;
  filter:drop-shadow(0 4px 12px rgba(94,163,255,.15));
}

.brand .name {
  font-weight:700;
  font-size:14px;
  text-align:center;
  color:#fff;
  letter-spacing:0.3px;
}

.vnav {
  display:flex;
  flex-direction:column;
  gap:4px;
}

.vnav a {
  padding:12px 16px;
  border-radius:8px;
  color:var(--muted);
  border:1px solid transparent;
  font-size:14px;
  font-weight:500;
  transition:all 0.2s;
}

.vnav a:hover {
  background:rgba(94,163,255,0.08);
  border-color:transparent;
  color:var(--text);
}

/* Main Content Area */
.main {
  margin-left:var(--sidebar);
}

.container {
  max-width:1200px;
  margin:0 auto;
  padding:48px 40px;
}

/* Mobile Top Bar */
.topbar {
  display:none;
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(10,14,23,.96);
  border-bottom:1px solid var(--border);
  padding:14px 20px;
  backdrop-filter:blur(12px);
}

.topbar .row {
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:13px;
}

.topbar img {
  height:32px;
}

/* Hero Section */
.hero {
  margin-bottom:64px;
}

.hero .hero-content {
  min-height:450px;
  border-radius:20px;
  background:linear-gradient(135deg, rgba(15,22,38,0.8) 0%, rgba(26,35,50,0.6) 100%);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:28px;
  padding:80px 48px;
  text-align:center;
  position:relative;
  overflow:hidden;
  box-shadow:0 20px 60px rgba(0,0,0,.3);
}

.hero .hero-content::before {
  content:'';
  position:absolute;
  inset:0;
  background:radial-gradient(circle at 50% 50%, rgba(94,163,255,0.08) 0%, transparent 70%);
  pointer-events:none;
}

.hero .hero-tagline {
  font-size:42px;
  font-weight:700;
  line-height:1.25;
  color:#fff;
  max-width:900px;
  position:relative;
  z-index:1;
  letter-spacing:-0.02em;
}

/* Section Spacing */
.section {
  margin-top:64px;
}

/* Cards - Ultra Clean */
.card {
  background:var(--panel);
  border:none;
  border-radius:16px;
  padding:40px;
  transition:all 0.3s ease;
  box-shadow:0 1px 3px rgba(0,0,0,.1);
}

.card:hover {
  box-shadow:0 8px 32px rgba(0,0,0,.2);
  transform:translateY(-2px);
}

/* Form Cards - Visible Borders */
form .card {
  background:rgba(15,20,32,.6);
  border:1px solid var(--border);
  box-shadow:none;
}

form .card:hover {
  transform:none;
}

/* Grid Layouts */
.grid {
  display:grid;
  gap:32px;
}

.grid-3 {
  grid-template-columns:repeat(3,1fr);
}

.grid-2 {
  grid-template-columns:repeat(2,1fr);
  align-items:start;
}

/* Badges and Labels */
.kicker {
  display:inline-block;
  padding:8px 16px;
  border-radius:24px;
  background:rgba(94,163,255,.12);
  color:var(--accent);
  font-size:12px;
  font-weight:700;
  letter-spacing:1px;
  text-transform:uppercase;
  margin-bottom:20px;
}

.badge {
  display:inline-block;
  padding:6px 14px;
  border-radius:20px;
  background:rgba(94,163,255,.1);
  color:var(--accent);
  font-size:11px;
  font-weight:700;
  letter-spacing:0.8px;
  text-transform:uppercase;
  margin-bottom:16px;
}

/* Figure Images - Clean Integration */
.figure {
  border-radius:16px;
  background:#0c1018;
  height:100%;
  min-height:360px;
  background-size:cover;
  background-repeat:no-repeat;
  background-position:center;
  overflow:hidden;
  box-shadow:0 4px 20px rgba(0,0,0,.25);
}

/* Typography */
h1 {
  font-size:52px;
  line-height:1.1;
  margin:0 0 0.4em 0;
  font-weight:800;
  letter-spacing:-0.03em;
  color:#fff;
}

h2 {
  font-size:36px;
  line-height:1.2;
  margin:0 0 0.6em 0;
  font-weight:700;
  letter-spacing:-0.02em;
  color:#fff;
}

h3 {
  font-size:24px;
  line-height:1.3;
  margin:0 0 0.7em 0;
  font-weight:600;
  color:#fff;
}

p {
  margin:0 0 1.2em 0;
  line-height:1.7;
}

.lead {
  font-size:21px;
  line-height:1.65;
  color:#c7d2e3;
  max-width:800px;
  font-weight:400;
  margin-bottom:1.5em;
}

/* Buttons and Actions */
.actions {
  display:flex;
  gap:16px;
  margin-top:32px;
  flex-wrap:wrap;
}

.btn {
  display:inline-block;
  padding:15px 28px;
  border-radius:12px;
  background:var(--accent);
  color:#06111f;
  font-weight:700;
  border:none;
  font-size:15px;
  cursor:pointer;
  transition:all 0.2s;
  text-decoration:none;
  box-shadow:0 4px 12px rgba(94,163,255,.2);
}

.btn:hover {
  background:#7eb9ff;
  transform:translateY(-2px);
  box-shadow:0 6px 20px rgba(94,163,255,.35);
}

.btn.secondary {
  background:transparent;
  color:#e5e7eb;
  border:1px solid rgba(94,163,255,.3);
  box-shadow:none;
}

.btn.secondary:hover {
  background:rgba(94,163,255,.1);
  border-color:var(--accent);
  color:#fff;
}

/* Lists */
ul.check {
  list-style:none;
  padding:0;
  margin:1.5em 0;
}

ul.check li {
  padding-left:32px;
  position:relative;
  margin-bottom:14px;
  line-height:1.7;
}

ul.check li::before {
  content:'✓';
  position:absolute;
  left:0;
  color:var(--accent2);
  font-weight:700;
  font-size:18px;
}

/* Footer */
.footer {
  border-top:1px solid var(--border);
  margin-top:80px;
  padding:32px 0;
  color:#7b8ba3;
  font-size:14px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:16px;
}

.small {
  font-size:13px;
  color:#7b8ba3;
  line-height:1.6;
}

/* Scroll to Top Button */
#toTop {
  position:fixed;
  right:24px;
  bottom:24px;
  padding:13px 18px;
  border-radius:12px;
  border:1px solid var(--border);
  background:rgba(15,22,38,.92);
  color:var(--text);
  display:none;
  z-index:60;
  cursor:pointer;
  font-weight:600;
  transition:all 0.2s;
  backdrop-filter:blur(12px);
  box-shadow:0 4px 16px rgba(0,0,0,.2);
}

#toTop:hover {
  background:rgba(94,163,255,.15);
  border-color:var(--accent);
  transform:translateY(-2px);
}

/* Forms */
form.grid input,
form.grid textarea {
  font-family:inherit;
  font-size:15px;
  background:rgba(15,22,38,.8);
  border:1px solid var(--border);
  color:var(--text);
  border-radius:10px;
  transition:all 0.2s;
}

form.grid input:focus,
form.grid textarea:focus {
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(94,163,255,.12);
  background:rgba(15,22,38,.95);
}

form.grid input::placeholder,
form.grid textarea::placeholder {
  color:#6b7280;
}

/* Responsive Design */
@media (max-width:980px){
  .sidebar { display:none; }
  .main { margin-left:0; }
  .topbar { display:block; }
  .grid-3, .grid-2 { grid-template-columns:1fr; }
  h1 { font-size:38px; }
  h2 { font-size:30px; }
  .hero .hero-tagline { font-size:28px; }
  .container { padding:32px 24px; }
  .card { padding:28px; }
  .section { margin-top:48px; }
}