*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --teal:       #2D7A7A;
  --teal-mid:   #4A9A9A;
  --teal-light: #E8F4F4;
  --navy:       #1B2A4A;
  --gray-text:  #333333;
  --bg-neutral: #EEEEEE;
  --white:      #FFFFFF;
  --font-title: 'Raleway', sans-serif;
  --font-body:  'Lato', sans-serif;
}
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); color: var(--gray-text); background: var(--white); overflow-x: hidden; }

nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 60px;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(45,122,122,0.12);
  transition: padding 0.3s;
}
nav.scrolled { padding: 14px 60px; }
.nav-logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.nav-logo img { width: 44px; height: 44px; object-fit: contain; }
.nav-logo-text { font-family: var(--font-title); font-weight: 700; font-size: 1.1rem; color: var(--teal); letter-spacing: -0.02em; line-height: 1.1; }
.nav-logo-text span { display: block; font-weight: 300; font-size: 0.65rem; letter-spacing: 0.15em; color: var(--navy); text-transform: uppercase; }
.nav-links { display: flex; gap: 36px; list-style: none; }
.nav-links a { font-family: var(--font-body); font-size: 0.88rem; color: var(--gray-text); text-decoration: none; letter-spacing: 0.03em; transition: color 0.2s; }
.nav-links a:hover { color: var(--teal); }
.nav-cta { font-family: var(--font-title); font-weight: 600; font-size: 0.85rem; color: var(--white); background: var(--teal); padding: 10px 24px; border-radius: 4px; text-decoration: none; letter-spacing: 0.03em; transition: background 0.2s, transform 0.15s; }
.nav-cta:hover { background: var(--teal-mid); transform: translateY(-1px); }

.hero { min-height: 100vh; display: flex; align-items: center; flex-direction: row; gap: 40px; padding: 120px 80px 80px; position: relative; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: 0; background: var(--white); }
.hero-bg::before { content: ''; position: absolute; inset: 0; background-image: radial-gradient(circle at 70% 50%, rgba(45,122,122,0.06) 0%, transparent 60%), radial-gradient(circle at 20% 80%, rgba(27,42,74,0.04) 0%, transparent 40%); }
.hero-content { position: relative; z-index: 2; flex: 1; max-width: 600px; }
.hero-visual { display: flex; align-items: center; justify-content: center; flex: 1; opacity: 0; animation: fadeIn 1.2s 0.8s forwards; }
.hero-eyebrow { font-family: var(--font-body); font-size: 0.78rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--teal); margin-bottom: 24px; opacity: 0; animation: fadeUp 0.7s 0.2s forwards; }
.hero-title { font-family: var(--font-title); font-weight: 800; font-size: clamp(2.4rem, 5vw, 3.8rem); line-height: 1.08; color: var(--navy); letter-spacing: -0.03em; margin-bottom: 28px; opacity: 0; animation: fadeUp 0.7s 0.35s forwards; }
.hero-title em { font-style: normal; color: var(--teal); }
.hero-desc { font-size: 1.05rem; line-height: 1.75; color: #555; max-width: 520px; margin-bottom: 44px; opacity: 0; animation: fadeUp 0.7s 0.5s forwards; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; opacity: 0; animation: fadeUp 0.7s 0.65s forwards; }
.hero-tagline { position: absolute; bottom: 48px; left: 80px; display: flex; gap: 24px; opacity: 0; animation: fadeUp 0.7s 0.9s forwards; }
.hero-tagline span { font-family: var(--font-body); font-size: 0.75rem; letter-spacing: 0.18em; text-transform: uppercase; color: rgba(45,122,122,0.6); }
.hero-tagline span::before { content: '·'; margin-right: 8px; color: var(--teal-mid); }
.hero-tagline span:first-child::before { display: none; }

.btn-primary { font-family: var(--font-title); font-weight: 700; font-size: 0.9rem; letter-spacing: 0.04em; color: var(--white); background: var(--teal); padding: 14px 32px; border-radius: 4px; text-decoration: none; transition: background 0.2s, transform 0.15s, box-shadow 0.2s; }
.btn-primary:hover { background: var(--navy); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(45,122,122,0.25); }
.btn-secondary { font-family: var(--font-title); font-weight: 600; font-size: 0.9rem; letter-spacing: 0.04em; color: var(--teal); background: transparent; padding: 14px 32px; border-radius: 4px; border: 1.5px solid var(--teal); text-decoration: none; transition: background 0.2s; }
.btn-secondary:hover { background: var(--teal-light); }

.section-proposito { background: var(--navy); padding: 100px 60px; position: relative; overflow: hidden; }
.section-proposito::before { content: ''; position: absolute; right: -100px; top: -100px; width: 500px; height: 500px; border-radius: 50%; background: rgba(45,122,122,0.08); }
.proposito-inner { max-width: 780px; margin: 0 auto; position: relative; z-index: 1; }
.section-label { font-family: var(--font-body); font-size: 0.72rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--teal-mid); margin-bottom: 20px; }
.proposito-quote { font-family: var(--font-title); font-weight: 300; font-size: clamp(1.4rem, 3vw, 2rem); line-height: 1.55; color: var(--white); letter-spacing: -0.01em; margin-bottom: 40px; }
.proposito-quote strong { font-weight: 700; color: var(--teal-mid); }
.proposito-body { font-size: 1rem; line-height: 1.8; color: rgba(255,255,255,0.65); max-width: 640px; }

.section-servicios { padding: 100px 60px; background: var(--white); }
.section-header { margin-bottom: 64px; }
.section-title { font-family: var(--font-title); font-weight: 800; font-size: clamp(1.8rem, 3.5vw, 2.6rem); color: var(--navy); letter-spacing: -0.03em; margin-bottom: 12px; }
.section-sub { font-size: 1rem; color: #777; line-height: 1.6; max-width: 520px; }
.servicios-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 2px; background: var(--bg-neutral); }
.servicio-card { background: var(--white); padding: 44px 36px; transition: background 0.25s; }
.servicio-card:hover { background: var(--teal-light); }
.servicio-num { font-family: var(--font-title); font-weight: 800; font-size: 2.4rem; color: rgba(45,122,122,0.15); line-height: 1; margin-bottom: 20px; letter-spacing: -0.04em; }
.servicio-icon { width: 36px; height: 36px; margin-bottom: 20px; }
.servicio-titulo { font-family: var(--font-title); font-weight: 700; font-size: 1.15rem; color: var(--navy); letter-spacing: -0.02em; margin-bottom: 12px; }
.servicio-desc { font-size: 0.92rem; line-height: 1.7; color: #666; }

.section-metodologia { background: var(--teal-light); padding: 100px 60px; }
.metodo-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 56px; position: relative; }
.metodo-steps::before { content: ''; position: absolute; top: 28px; left: calc(16.66% + 20px); right: calc(16.66% + 20px); height: 1.5px; background: linear-gradient(90deg, var(--teal) 0%, var(--teal-mid) 100%); z-index: 0; }
.metodo-step { padding: 0 32px; text-align: center; position: relative; z-index: 1; }
.step-dot { width: 56px; height: 56px; border-radius: 50%; background: var(--white); border: 2px solid var(--teal); display: flex; align-items: center; justify-content: center; margin: 0 auto 28px; font-family: var(--font-title); font-weight: 800; font-size: 1.1rem; color: var(--teal); transition: background 0.25s, color 0.25s; }
.metodo-step:hover .step-dot { background: var(--teal); color: var(--white); }
.step-titulo { font-family: var(--font-title); font-weight: 700; font-size: 1rem; color: var(--navy); letter-spacing: -0.01em; margin-bottom: 10px; }
.step-desc { font-size: 0.88rem; line-height: 1.65; color: #556; }

.section-diferenciador { padding: 100px 60px; background: var(--white); display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.dif-visual { display: flex; align-items: center; justify-content: center; }
.dif-block { background: var(--teal); padding: 56px 48px; border-radius: 2px; }
.dif-stat { font-family: var(--font-title); font-weight: 800; font-size: 3.6rem; color: var(--white); letter-spacing: -0.04em; line-height: 1; margin-bottom: 8px; }
.dif-stat-label { font-family: var(--font-body); font-size: 0.88rem; color: rgba(255,255,255,0.7); letter-spacing: 0.05em; }
.dif-divider { width: 40px; height: 1.5px; background: rgba(255,255,255,0.3); margin: 32px 0; }
.dif-content .section-label { color: var(--teal); }
.dif-title { font-family: var(--font-title); font-weight: 800; font-size: clamp(1.6rem, 3vw, 2.2rem); color: var(--navy); letter-spacing: -0.03em; line-height: 1.2; margin-bottom: 20px; }
.dif-body { font-size: 1rem; line-height: 1.8; color: #555; margin-bottom: 36px; }

.section-contacto { background: var(--navy); padding: 100px 60px; text-align: center; position: relative; overflow: hidden; }
.section-contacto::after { content: ''; position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); width: 600px; height: 600px; border-radius: 50%; border: 1px solid rgba(45,122,122,0.15); pointer-events: none; }
.contacto-title { font-family: var(--font-title); font-weight: 800; font-size: clamp(1.8rem, 4vw, 3rem); color: var(--white); letter-spacing: -0.03em; margin-bottom: 20px; position: relative; z-index: 1; }
.contacto-title em { font-style: normal; color: var(--teal-mid); }
.contacto-sub { font-size: 1rem; color: rgba(255,255,255,0.55); line-height: 1.7; max-width: 480px; margin: 0 auto 44px; position: relative; z-index: 1; }
.contacto-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; z-index: 1; margin-bottom: 8px; }
.btn-outline-light { font-family: var(--font-title); font-weight: 600; font-size: 0.9rem; letter-spacing: 0.04em; color: var(--white); background: transparent; padding: 14px 32px; border-radius: 4px; border: 1.5px solid rgba(255,255,255,0.3); text-decoration: none; transition: border-color 0.2s, background 0.2s; }
.btn-outline-light:hover { border-color: rgba(255,255,255,0.7); background: rgba(255,255,255,0.05); }

.contacto-form-wrap { max-width: 580px; margin: 0 auto; overflow: hidden; max-height: 0; opacity: 0; transform: translateY(-12px); transition: max-height 0.5s ease, opacity 0.4s ease, transform 0.4s ease; position: relative; z-index: 1; }
.contacto-form-wrap.open { max-height: 700px; opacity: 1; transform: translateY(0); }
.contacto-form { display: flex; flex-direction: column; gap: 14px; padding-top: 32px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-input { width: 100%; font-family: var(--font-body); font-size: 0.95rem; color: var(--white); background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.15); border-radius: 4px; padding: 14px 18px; outline: none; transition: border-color 0.2s, background 0.2s; }
.form-input::placeholder { color: rgba(255,255,255,0.35); }
.form-input:focus { border-color: var(--teal-mid); background: rgba(255,255,255,0.1); }
.form-textarea { resize: vertical; min-height: 120px; }
.form-phone-row { display: flex; gap: 10px; }
.form-select { flex: 0 0 auto; width: 130px; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='rgba(255,255,255,0.4)' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; cursor: pointer; }
.form-select option { background: #1B2A4A; color: #fff; }
.form-phone { flex: 1; }
.form-footer { display: flex; gap: 12px; justify-content: flex-end; }
.btn-submit { font-family: var(--font-title); font-weight: 700; font-size: 0.9rem; letter-spacing: 0.04em; color: var(--navy); background: var(--white); padding: 12px 28px; border-radius: 4px; border: none; cursor: pointer; transition: background 0.2s, transform 0.15s; }
.btn-submit:hover { background: var(--teal-light); transform: translateY(-2px); }
.btn-cancel { font-family: var(--font-title); font-weight: 600; font-size: 0.9rem; color: rgba(255,255,255,0.5); background: transparent; border: none; cursor: pointer; padding: 12px 16px; transition: color 0.2s; }
.btn-cancel:hover { color: rgba(255,255,255,0.85); }
.form-success { display: flex; flex-direction: column; align-items: center; gap: 12px; padding: 40px 0 16px; text-align: center; }
.form-success-title { font-family: var(--font-title); font-weight: 700; font-size: 1.4rem; color: var(--white); letter-spacing: -0.02em; }
.form-success-sub { font-family: var(--font-body); font-size: 0.95rem; color: rgba(255,255,255,0.5); }
.btn-light { font-family: var(--font-title); font-weight: 700; font-size: 0.9rem; letter-spacing: 0.04em; color: var(--navy); background: var(--white); padding: 14px 32px; border-radius: 4px; border: none; cursor: pointer; transition: background 0.2s, transform 0.15s; }
.btn-light:hover, a.btn-light:hover { background: var(--teal-light); transform: translateY(-2px); }

footer { background: #111820; padding: 40px 60px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 20px; }
.footer-logo { display: flex; align-items: center; gap: 10px; }
.footer-logo img { width: 36px; height: 36px; object-fit: contain; filter: brightness(0) invert(1); opacity: 0.7; }
.footer-brand { font-family: var(--font-title); font-weight: 700; font-size: 0.95rem; color: var(--teal-mid); }
.footer-tagline { font-family: var(--font-body); font-size: 0.75rem; letter-spacing: 0.15em; text-transform: uppercase; color: rgba(255,255,255,0.25); }
.footer-copy { font-size: 0.78rem; color: rgba(255,255,255,0.2); }

@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

@media (max-width: 900px) {
  nav { padding: 16px 24px; }
  .nav-links { display: none; }
  .hero { padding: 100px 24px 60px; flex-direction: column; }
  .hero-visual { display: none; }
  .hero-content { max-width: 100%; }
  .hero-tagline { left: 24px; }
  .section-proposito, .section-servicios, .section-metodologia, .section-contacto { padding: 72px 24px; }
  .section-diferenciador { grid-template-columns: 1fr; padding: 72px 24px; gap: 40px; }
  .metodo-steps { grid-template-columns: 1fr; gap: 40px; }
  .metodo-steps::before { display: none; }
  .form-row { grid-template-columns: 1fr; }
  footer { padding: 32px 24px; flex-direction: column; align-items: flex-start; }
}