:root {
  --gk-ink: #10131F;
  --gk-bg: #F6F4EE;
  --gk-green: #17B890;
  --gk-dark: #0B1017;
  --gk-border: #E4E1D6;
  --gk-muted: #6B7280;
}

* { box-sizing: border-box; }
html { overflow-y: scroll; scrollbar-gutter: stable; }
body {
  margin: 0;
  font-family: 'Manrope', sans-serif;
  background: var(--gk-bg);
  color: var(--gk-ink);
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--gk-green); }
h1, h2, h3, .brand { font-family: 'Space Grotesk', sans-serif; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

.header { position: sticky; top: 0; z-index: 500; background: var(--gk-bg); border-bottom: 1px solid var(--gk-border); }
.header-inner { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; padding: 16px 24px; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-badge { width: 40px; height: 40px; border-radius: 10px; background: var(--gk-ink); color: var(--gk-green); display: flex; align-items: center; justify-content: center; font-weight: 700; }
.logo-name { font-weight: 700; font-size: 1.25rem; }

.nav { display: flex; align-items: center; gap: 2px; flex-wrap: wrap; }
.nav a, .nav button { padding: 10px 16px; border-radius: 99px; background: none; border: none; font-weight: 700; font-size: .85rem; cursor: pointer; }

.header-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.btn { display: inline-block; padding: 11px 22px; border-radius: 99px; font-weight: 800; font-size: .82rem; border: none; cursor: pointer; }
.btn-primary { background: var(--gk-green); color: var(--gk-dark); }
.btn-ghost { padding: 10px 16px; font-weight: 700; }

.hero { padding: 64px 24px; text-align: center; }
.hero .eyebrow { color: var(--gk-green); font-weight: 800; font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; }
.hero h1 { font-size: 2.1rem; margin: 10px 0; }
.hero p { color: var(--gk-muted); max-width: 640px; margin: 0 auto; }

.card { background: #fff; border-radius: 24px; box-shadow: 0 20px 50px rgba(16,19,31,.1); overflow: hidden; }

.pricing-panel { max-width: 900px; margin: 40px auto; display: flex; flex-wrap: wrap; }
.pricing-panel .features { flex: 1 1 280px; background: var(--gk-bg); padding: 34px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 16px; }
.pricing-panel .plan { flex: 1 1 260px; padding: 34px; }
.toggle-btn { padding: 9px 18px; border-radius: 99px; border: none; font-weight: 700; font-size: .82rem; cursor: pointer; }
.toggle-active { background: var(--gk-green); color: var(--gk-dark); }
.toggle-inactive { background: transparent; color: var(--gk-ink); }
.price { font-weight: 700; font-size: 2.2rem; margin-bottom: 20px; }
.price span { font-size: .85rem; font-weight: 600; color: var(--gk-muted); }

.tld-track { display: flex; gap: 16px; overflow-x: auto; padding-bottom: 8px; }
.tld-card { flex-shrink: 0; width: 150px; background: #fff; border: 1px solid var(--gk-border); border-radius: 16px; padding: 24px 18px; text-align: center; }
.tld-ext { font-weight: 700; font-size: 1.3rem; margin-bottom: 8px; }
.tld-price { font-size: .8rem; color: var(--gk-green); font-weight: 700; }

.footer { background: var(--gk-dark); color: #9CA3AF; padding: 56px 0 0; margin-top: 60px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap: 32px; padding-bottom: 36px; border-bottom: 1px solid #1F2438; }
.footer h3 { color: #fff; font-size: .9rem; margin: 0 0 14px; }
.footer a { display: block; font-size: .82rem; margin-bottom: 8px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding: 20px 0; flex-wrap: wrap; gap: 12px; }

.form-box { max-width: 420px; margin: 60px auto; background: #fff; border-radius: 20px; padding: 34px; box-shadow: 0 20px 50px rgba(16,19,31,.1); }
.form-box label { display: block; font-weight: 700; font-size: .82rem; margin: 14px 0 6px; }
.form-box input, .form-box select { width: 100%; padding: 11px 14px; border-radius: 10px; border: 1px solid var(--gk-border); font-family: inherit; }
.form-error { background: #FEE2E2; color: #991B1B; padding: 10px 14px; border-radius: 10px; font-size: .82rem; margin-bottom: 10px; }
.form-success { background: #DCFCE7; color: #14532D; padding: 10px 14px; border-radius: 10px; font-size: .82rem; margin-bottom: 10px; }

.table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 16px; overflow: hidden; }
.table th, .table td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--gk-border); font-size: .85rem; }
.table th { background: var(--gk-bg); font-weight: 700; }
.badge { padding: 4px 10px; border-radius: 99px; font-size: .72rem; font-weight: 700; }
.badge-paid { background: #DCFCE7; color: #14532D; }
.badge-unpaid { background: #FEF3C7; color: #92400E; }
.badge-overdue { background: #FEE2E2; color: #991B1B; }

.dash-layout { display: flex; max-width: 1280px; margin: 0 auto; gap: 32px; padding: 40px 24px; }
.dash-sidebar { width: 220px; flex-shrink: 0; }
.dash-sidebar a { display: block; padding: 10px 14px; border-radius: 10px; font-weight: 700; font-size: .85rem; margin-bottom: 4px; }
.dash-sidebar a:hover, .dash-sidebar a.active { background: #fff; }
.dash-main { flex: 1; min-width: 0; }