html { scroll-behavior: smooth; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; color: #1f2937; line-height: 1.6; background: #ffffff; }
.oxi-landing * { box-sizing: border-box; margin: 0; padding: 0; }
.oxi-landing { font-family: inherit; color: #1f2937; }
.oxi-container { max-width: 1140px; margin: 0 auto; padding: 0 20px; }
section { scroll-margin-top: 90px; }

.oxi-topbar { position: sticky; top: 0; background: #ffffff; border-bottom: 1px solid #e5e7eb; z-index: 1000; }
.oxi-topbar-inner { max-width: 1140px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; flex-wrap: wrap; gap: 10px; }
.oxi-logo { display: block; text-decoration: none; }
.oxi-logo img { display: block; width: 280px; height: auto; }
.oxi-nav { display: flex; gap: 22px; flex-wrap: wrap; }
.oxi-nav a { color: #374151; text-decoration: none; font-weight: 600; font-size: 15px; }
.oxi-nav a:hover { color: #16a34a; }

.oxi-hero { background: #f3f4f6; color: #1f2937; padding: 80px 20px; text-align: center; }
.oxi-hero h1 { font-size: 42px; font-weight: 800; margin-bottom: 16px; line-height: 1.2; }
.oxi-hero .subtitle { font-size: 20px; color: #4b5563; max-width: 760px; margin: 0 auto 32px; }

.oxi-topbar--overlay { position: absolute; top: 0; left: 0; right: 0; background: transparent; border-bottom: none; z-index: 10; }
.oxi-topbar--overlay .oxi-nav a { color: #ffffff; text-shadow: 0 1px 4px rgba(0,0,0,0.5); }
.oxi-topbar--overlay .oxi-nav a:hover { color: #4ade80; }
.oxi-topbar--overlay .oxi-logo img { filter: drop-shadow(0 2px 6px rgba(0,0,0,0.35)); }

.oxi-hero-home { position: relative; background: linear-gradient(rgba(10, 20, 40, 0.62), rgba(10, 20, 40, 0.62)), url("../img/header.webp") center / cover no-repeat; color: #ffffff; padding: 175px 20px 110px; }
.oxi-hero-home h1 { color: #ffffff; text-shadow: 0 2px 8px rgba(0,0,0,0.4); }
.oxi-hero-home .subtitle { color: #e5e7eb; text-shadow: 0 1px 4px rgba(0,0,0,0.4); }

.oxi-sobre-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 40px; align-items: center; max-width: 1100px; margin: 0 auto; }
.oxi-sobre-grid .oxi-apps-text { margin: 0; }
.oxi-sobre-img { width: 100%; height: auto; border-radius: 12px; box-shadow: 0 8px 24px rgba(0,0,0,0.12); }

.oxi-cta-row { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.oxi-btn { display: inline-flex; align-items: center; gap: 10px; padding: 16px 32px; border-radius: 8px; font-size: 17px; font-weight: 700; text-decoration: none; transition: transform 0.15s, box-shadow 0.15s; border: none; cursor: pointer; }
.oxi-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.15); }
.oxi-btn-whatsapp { background: #25d366; color: #ffffff; }
.oxi-btn-phone { background: #16a34a; color: #ffffff; }
.oxi-btn-phone:hover { background: #15803d; }
.oxi-btn-green { background: #16a34a; color: #ffffff; }
.oxi-btn-green:hover { background: #15803d; }

.oxi-benefits { padding: 64px 20px; background: #ffffff; }
.oxi-benefits--gray { background: #f3f4f6; }
.oxi-benefits-intro { max-width: 800px; margin: 0 auto 40px; font-size: 17px; color: #374151; text-align: center; }
.oxi-benefits-intro p { margin-bottom: 16px; }
.oxi-section-title { font-size: 32px; font-weight: 800; text-align: center; margin-bottom: 40px; color: #1f2937; }
.oxi-benefits-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; max-width: 900px; margin: 0 auto; }
.oxi-benefit-card { background: #ffffff; padding: 32px 24px; border-radius: 12px; text-align: center; box-shadow: 0 2px 8px rgba(0,0,0,0.06); border: 2px solid #16a34a; }
.oxi-benefit-icon { width: 56px; height: 56px; margin: 0 auto 16px; background: #dcfce7; border-radius: 12px; display: flex; align-items: center; justify-content: center; color: #16a34a; }
.oxi-benefit-title { font-size: 18px; font-weight: 700; margin-bottom: 8px; color: #1f2937; }
.oxi-benefit-desc { font-size: 15px; color: #4b5563; }

.oxi-apps { padding: 64px 20px; background: #f9fafb; }
.oxi-apps-text { max-width: 800px; margin: 0 auto; font-size: 17px; color: #374151; }
.oxi-apps-text p { margin-bottom: 20px; }
.oxi-apps-list { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 32px; }
.oxi-tag { background: #dcfce7; color: #15803d; padding: 10px 20px; border-radius: 24px; font-size: 15px; font-weight: 600; }
a.oxi-tag { text-decoration: none; }
a.oxi-tag:hover { background: #bbf7d0; }

.oxi-gases { padding: 64px 20px; background: #ffffff; }
.oxi-subsection-title { font-size: 22px; font-weight: 800; text-align: center; color: #15803d; margin: 48px 0 24px; }
.oxi-gases .oxi-subsection-title:first-of-type { margin-top: 0; }
.oxi-cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.oxi-gas-card { background: #f9fafb; border: 1px solid #e5e7eb; border-radius: 12px; padding: 28px; text-decoration: none; display: flex; flex-direction: column; transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s; }
.oxi-gas-card:hover { border-color: #16a34a; box-shadow: 0 6px 20px rgba(0,0,0,0.08); transform: translateY(-3px); }
.oxi-gas-card img { width: 100%; height: 180px; object-fit: contain; background: #ffffff; border-radius: 8px; margin-bottom: 14px; }
.oxi-gas-card h3 { font-size: 20px; font-weight: 800; color: #1f2937; margin-bottom: 8px; }
.oxi-gas-card p { font-size: 15px; color: #4b5563; margin-bottom: 14px; }
.oxi-gas-link { color: #16a34a; font-weight: 700; font-size: 15px; }
.oxi-card-btns { display: flex; flex-direction: column; gap: 10px; margin-top: auto; padding-top: 6px; }
.oxi-card-btn { flex: 1 1 auto; text-align: center; padding: 10px 12px; border-radius: 8px; font-size: 14px; font-weight: 700; text-decoration: none; white-space: nowrap; }
.oxi-card-btn--solid { background: #16a34a; color: #ffffff; }
.oxi-card-btn--solid:hover { background: #15803d; }
.oxi-card-btn--outline { border: 2px solid #16a34a; color: #15803d; background: transparent; }
.oxi-card-btn--outline:hover { background: #dcfce7; }

.oxi-locacao { padding: 64px 20px; background: #f0fdf4; text-align: center; }
.oxi-locacao-text { max-width: 760px; margin: 0 auto 28px; font-size: 17px; color: #374151; }

.oxi-authority { padding: 64px 20px; background: #1f2937; color: #ffffff; text-align: center; }
.oxi-authority-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 32px; max-width: 900px; margin: 0 auto; }
.oxi-stat-num { font-size: 48px; font-weight: 800; color: #4ade80; margin-bottom: 8px; }
.oxi-stat-label { font-size: 16px; opacity: 0.95; }

.oxi-contact-section { padding: 64px 20px; background: linear-gradient(135deg, #15803d 0%, #16a34a 100%); }
.oxi-contact-section .oxi-section-title { color: #ffffff; }
.oxi-contact-intro { text-align: center; font-size: 18px; color: #dcfce7; margin-bottom: 32px; }
.oxi-whatsapp-block { text-align: center; margin-bottom: 48px; }
.oxi-btn-whatsapp-big { display: inline-flex; align-items: center; gap: 14px; padding: 22px 48px; background: #ffffff; color: #15803d; border-radius: 12px; font-size: 22px; font-weight: 800; text-decoration: none; box-shadow: 0 8px 24px rgba(0,0,0,0.2); transition: transform 0.15s, box-shadow 0.15s; }
.oxi-btn-whatsapp-big:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(0,0,0,0.28); color: #15803d; }
.oxi-btn-whatsapp-big svg { width: 28px; height: 28px; }
.oxi-whatsapp-note { margin-top: 14px; font-size: 14px; color: #dcfce7; }

.oxi-divider { display: flex; align-items: center; text-align: center; max-width: 560px; margin: 0 auto 32px; color: #dcfce7; font-size: 14px; text-transform: uppercase; letter-spacing: 1px; }
.oxi-divider::before, .oxi-divider::after { content: ""; flex: 1; border-bottom: 1px solid rgba(255,255,255,0.35); }
.oxi-divider span { padding: 0 16px; }

.oxi-form-wrap { max-width: 560px; margin: 0 auto; background: #f9fafb; padding: 40px; border-radius: 12px; box-shadow: 0 4px 16px rgba(0,0,0,0.08); }
.oxi-form-sub { text-align: center; color: #4b5563; margin-bottom: 24px; }
.oxi-form label { display: block; font-weight: 600; margin-bottom: 6px; color: #1f2937; font-size: 14px; }
.oxi-form input, .oxi-form select, .oxi-form textarea { width: 100%; padding: 12px 14px; border: 1px solid #d1d5db; border-radius: 8px; font-size: 16px; font-family: inherit; margin-bottom: 16px; background: #ffffff; }
.oxi-form input:focus, .oxi-form select:focus, .oxi-form textarea:focus { outline: none; border-color: #16a34a; box-shadow: 0 0 0 3px rgba(22,163,74,0.15); }
.oxi-form textarea { min-height: 100px; resize: vertical; }
.oxi-form button { width: 100%; padding: 16px; background: #16a34a; color: #ffffff; border: none; border-radius: 8px; font-size: 17px; font-weight: 700; cursor: pointer; }
.oxi-form button:hover { background: #15803d; }
.oxi-lgpd { display: flex; align-items: flex-start; gap: 10px; font-size: 13px; color: #4b5563; margin-bottom: 20px; font-weight: 400; }
.oxi-lgpd input { width: auto; margin: 4px 0 0 0; }
.oxi-lgpd a { color: #16a34a; text-decoration: underline; }

.oxi-footer { background: #1f2937; color: #e5e7eb; padding: 56px 0 0; }
.oxi-footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 32px; padding-bottom: 40px; }
.oxi-footer-title { font-size: 18px; font-weight: 800; color: #ffffff; margin-bottom: 12px; }
.oxi-footer p { font-size: 15px; color: #d1d5db; margin: 0 0 8px 0; }
.oxi-footer-links a { display: block; margin-bottom: 8px; color: #d1d5db; text-decoration: none; font-size: 15px; }
.oxi-footer-links a:hover { color: #4ade80; }
.oxi-footer-logo { width: 220px; height: auto; display: block; margin-bottom: 14px; }
.oxi-fc { display: flex; align-items: flex-start; gap: 10px; }
.oxi-fc svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 4px; color: #4ade80; }
.oxi-footer-bottom { border-top: 1px solid #374151; padding: 20px; font-size: 14px; color: #9ca3af; text-align: center; }
.oxi-footer-bottom a { color: #4ade80; text-decoration: none; }
.oxi-footer-bottom p { margin: 4px 0; }

.oxi-whatsapp-float { position: fixed; bottom: 24px; right: 24px; width: 60px; height: 60px; background: #25d366; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 16px rgba(0,0,0,0.2); z-index: 999; text-decoration: none; }
.oxi-whatsapp-float:hover { transform: scale(1.05); }
.oxi-whatsapp-float svg { width: 32px; height: 32px; fill: #ffffff; }

.oxi-page-title { font-size: 34px; font-weight: 800; margin-bottom: 24px; text-align: center; }

@media (max-width: 768px) {
  .oxi-hero h1 { font-size: 30px; }
  .oxi-hero .subtitle { font-size: 17px; }
  .oxi-hero { padding: 60px 16px; }
  .oxi-hero-home { padding: 200px 16px 70px; background-position: 78% center; }
  .oxi-logo img { width: 210px; }
  .oxi-topbar-inner { justify-content: center; }
  .oxi-sobre-grid { grid-template-columns: 1fr; gap: 28px; }
  .oxi-section-title { font-size: 26px; }
  .oxi-stat-num { font-size: 38px; }
  .oxi-form-wrap { padding: 28px 20px; }
  .oxi-btn { width: 100%; justify-content: center; }
  .oxi-btn-whatsapp-big { padding: 18px 32px; font-size: 18px; width: 90%; justify-content: center; }
  .oxi-btn-whatsapp-big svg { width: 22px; height: 22px; }
  .oxi-benefits-grid { grid-template-columns: 1fr; }
}