:root {
  --bg: #f9f8f6;
  --surface: #ffffff;
  --ink: #1f2421;
  --sea: #075c61;
  --sea-dark: #053f43;
  --cream: #f4ede2;
  --line: #e2d9cc;
  --muted: #66706e;
  --accent: #25d366;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: system-ui, -apple-system, sans-serif; }
body { background: var(--bg); color: var(--ink); line-height: 1.6; }
.container { max-width: 680px; margin: 0 auto; padding: 0 20px; }

.hero-gratis { padding: 50px 0 40px; background: linear-gradient(135deg, #edf4f0 0%, #f9f8f6 100%); text-align: center; border-bottom: 1px solid var(--line); }
.badge-pill { display: inline-block; background: #d3e5dc; color: var(--sea-dark); font-size: 0.75rem; font-weight: 700; padding: 6px 14px; border-radius: 20px; letter-spacing: 0.05em; margin-bottom: 16px; }
h1 { font-size: 2.1rem; line-height: 1.25; color: var(--sea-dark); margin-bottom: 14px; }
.subtext { font-size: 1.05rem; color: var(--muted); margin-bottom: 30px; }

.optin-card { background: var(--surface); border: 1.5px solid var(--line); border-radius: 16px; padding: 28px 24px; box-shadow: 0 10px 30px rgba(7,92,97,.06); text-align: left; }
.optin-card h3 { font-size: 1.25rem; color: var(--sea-dark); margin-bottom: 8px; }
.optin-desc { font-size: 0.9rem; color: var(--muted); margin-bottom: 20px; }
.form-group { margin-bottom: 16px; }
label { display: block; font-size: 0.85rem; font-weight: 700; color: var(--ink); margin-bottom: 6px; }
input[type="text"] { width: 100%; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 10px; font-size: 1rem; background: #faf9f6; }
input[type="text"]:focus { outline: none; border-color: var(--sea); background: #fff; }
.btn-primary { display: block; width: 100%; background: var(--sea); color: #fff; border: none; border-radius: 10px; padding: 14px; font-size: 1rem; font-weight: 700; cursor: pointer; transition: background 0.2s; }
.btn-primary:hover { background: var(--sea-dark); }
.secure-note { display: block; text-align: center; font-size: 0.78rem; color: var(--muted); margin-top: 14px; }

.sect-features { padding: 40px 0; }
.sect-features h2 { text-align: center; font-size: 1.5rem; color: var(--sea-dark); margin-bottom: 24px; }
.feature-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.feature-box { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 18px; text-align: center; }
.feature-box .icon { font-size: 1.8rem; display: block; margin-bottom: 8px; }
.feature-box h4 { font-size: 1.05rem; color: var(--sea-dark); margin-bottom: 6px; }
.feature-box p { font-size: 0.88rem; color: var(--muted); }

.site-footer { padding: 30px 0; font-size: 0.82rem; color: var(--muted); border-top: 1px solid var(--line); }
.text-center { text-align: center; }

@media(min-width: 600px) {
  .feature-grid { grid-template-columns: repeat(3, 1fr); }
  h1 { font-size: 2.5rem; }
}

.sect-upsell { background: var(--cream); padding: 45px 0; border-top: 1px solid var(--line); margin-top: 40px; }
.badge-upsell { background: #e2d9cc; color: var(--sea-dark); }
.sect-upsell h3 { font-size: 1.35rem; color: var(--sea-dark); margin-bottom: 10px; }
.upsell-desc { font-size: 0.92rem; color: var(--muted); margin-bottom: 20px; line-height: 1.5; max-width: 540px; margin-left: auto; margin-right: auto; }
.btn-upsell { display: inline-block; background: var(--sea-dark); color: #fff; padding: 13px 24px; border-radius: 10px; font-weight: 700; text-decoration: none; font-size: 0.95rem; transition: background 0.2s; }
.btn-upsell:hover { background: var(--sea); }