:root {
  --orange: #f05a10;
  --orange-dark: #cf4607;
  --black: #171717;
  --dark: #252525;
  --gray: #6b6b6b;
  --light: #f7f7f7;
  --white: #ffffff;
  --radius: 26px;
  --shadow: 0 24px 70px rgba(0,0,0,.14);
  --max: 1180px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: Arial, Helvetica, sans-serif; color: var(--black); background: var(--white); line-height: 1.6; }
img { width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { width: min(92%, var(--max)); margin: 0 auto; }

.topbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(0,0,0,.07);
}

.nav { height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.logo { width: 190px; max-width: 48vw; }
.menu { display: flex; align-items: center; gap: 30px; list-style: none; font-size: .94rem; color: #333; font-weight: 600; }
.menu a { position: relative; padding: 8px 0; }
.menu a::after { content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 2px; background: var(--orange); transition: .25s ease; }
.menu a:hover::after { width: 100%; }
.nav-cta { background: var(--orange); color: white; padding: 12px 20px; border-radius: 999px; font-weight: 700; box-shadow: 0 12px 24px rgba(240,90,16,.24); transition: .25s ease; }
.nav-cta:hover { transform: translateY(-2px); background: var(--orange-dark); }
.hamburger { display: none; width: 44px; height: 44px; border: 0; background: #f3f3f3; border-radius: 12px; cursor: pointer; align-items: center; justify-content: center; flex-direction: column; gap: 5px; }
.hamburger span { width: 22px; height: 2px; background: #222; display: block; border-radius: 999px; }

.hero {
  min-height: 100vh;
  padding: 150px 0 90px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(15,15,15,.88) 0%, rgba(15,15,15,.60) 46%, rgba(15,15,15,.10) 100%),
    url('../images/capa-voice-comp-JReUmkO5Cal5pq91.jpg') center/cover no-repeat;
  color: white;
}

.hero-content { width: min(680px, 100%); }
.eyebrow { color: var(--orange); text-transform: uppercase; font-size: .82rem; letter-spacing: .16em; font-weight: 800; margin-bottom: 20px; }
h1 { font-size: clamp(2.7rem, 6vw, 5.8rem); line-height: .98; letter-spacing: -.06em; margin-bottom: 28px; }
.hero p { font-size: clamp(1.05rem, 2vw, 1.35rem); color: rgba(255,255,255,.84); max-width: 610px; margin-bottom: 34px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 24px; border-radius: 999px; font-weight: 800; transition: .25s ease; border: 1px solid transparent; cursor: pointer; }
.button-primary { background: var(--orange); color: white; box-shadow: 0 16px 32px rgba(240,90,16,.28); }
.button-primary:hover { background: var(--orange-dark); transform: translateY(-2px); }
.button-outline { color: white; border-color: rgba(255,255,255,.42); background: rgba(255,255,255,.08); }
.button-outline:hover { background: white; color: var(--black); }

section { padding: 105px 0; }
.section-grid { display: grid; grid-template-columns: 1.02fr .98fr; gap: 58px; align-items: center; }
.section-title { font-size: clamp(2rem, 4vw, 4rem); line-height: 1.02; letter-spacing: -.04em; margin-bottom: 24px; }
.lead { color: var(--gray); font-size: 1.08rem; max-width: 640px; }
.image-card { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); background: #eee; }
.image-card img { height: 100%; min-height: 430px; object-fit: cover; }
.service { background: var(--white); }
.service .visual-stack { display: grid; grid-template-columns: .78fr 1fr; gap: 18px; align-items: end; }
.service .small-card { border-radius: 24px; overflow: hidden; box-shadow: var(--shadow); transform: translateY(28px); }
.service .small-card img { aspect-ratio: 4/5; object-fit: cover; }
.service .big-card { border-radius: 30px; overflow: hidden; box-shadow: var(--shadow); }
.service .big-card img { aspect-ratio: 4/5; object-fit: cover; }

.benefits { background: #f5f5f5; }
.benefits-header { display: flex; justify-content: space-between; gap: 28px; align-items: flex-end; margin-bottom: 42px; }
.benefits-header .lead { max-width: 440px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card { background: white; border-radius: 24px; padding: 30px; min-height: 235px; box-shadow: 0 12px 36px rgba(0,0,0,.06); border: 1px solid rgba(0,0,0,.05); transition: .25s ease; }
.card:hover { transform: translateY(-6px); box-shadow: 0 18px 46px rgba(0,0,0,.10); }
.icon { width: 52px; height: 52px; border-radius: 18px; background: rgba(240,90,16,.12); color: var(--orange); display: flex; align-items: center; justify-content: center; font-weight: 900; font-size: 1.25rem; margin-bottom: 24px; }
.card h3 { font-size: 1.28rem; margin-bottom: 12px; }
.card p { color: var(--gray); font-size: .98rem; }

.city { background: var(--black); color: white; overflow: hidden; }
.city .lead { color: rgba(255,255,255,.72); }
.city .section-grid { grid-template-columns: .9fr 1.1fr; }
.city .image-card { box-shadow: 0 30px 80px rgba(0,0,0,.36); }
.space-top { margin-top: 34px; }
.demo { background: white; }
.demo-showcase { margin-top: 48px; display: grid; grid-template-columns: 1.25fr .75fr; gap: 22px; align-items: stretch; }
.demo-wide, .demo-phone { border-radius: 30px; overflow: hidden; box-shadow: var(--shadow); background: #eee; }
.demo-wide img, .demo-phone img { height: 100%; object-fit: cover; min-height: 440px; }
.demo-phone img { object-position: top center; }

.contact { background: #f5f5f5; }
.contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 48px; align-items: start; }
.contact-card { background: white; padding: 34px; border-radius: 28px; box-shadow: var(--shadow); }
form { display: grid; gap: 16px; }
input, textarea { width: 100%; border: 1px solid rgba(0,0,0,.12); border-radius: 16px; padding: 16px 18px; font: inherit; outline: none; transition: .2s ease; background: #fafafa; }
textarea { min-height: 130px; resize: vertical; }
input:focus, textarea:focus { border-color: var(--orange); background: white; box-shadow: 0 0 0 4px rgba(240,90,16,.10); }
.form-note { color: var(--gray); font-size: .9rem; margin-top: 12px; }

footer { background: #101010; color: white; padding: 54px 0; }
.footer-grid { display: grid; grid-template-columns: 1.1fr .9fr .9fr; gap: 32px; align-items: start; }
footer .logo { background: #fff; padding: 10px 14px; border-radius: 14px; filter: none; margin-bottom: 18px; }
footer p, footer a, footer li { color: rgba(255,255,255,.72); font-size: .96rem; }
footer h4 { margin-bottom: 14px; color: white; }
footer ul { list-style: none; display: grid; gap: 8px; }
.copyright { border-top: 1px solid rgba(255,255,255,.12); margin-top: 36px; padding-top: 22px; color: rgba(255,255,255,.58); font-size: .9rem; }

@media (max-width: 920px) {
  .nav { height: 74px; }
  .hamburger { display: flex; }
  .menu-wrap { position: fixed; top: 74px; left: 0; width: 100%; background: white; border-bottom: 1px solid rgba(0,0,0,.08); padding: 20px 4%; transform: translateY(-140%); transition: .25s ease; box-shadow: 0 20px 30px rgba(0,0,0,.08); }
  .menu-wrap.active { transform: translateY(0); }
  .menu { flex-direction: column; align-items: flex-start; gap: 14px; }
  .nav-cta { display: none; }
  .hero { min-height: auto; padding: 138px 0 82px; background: linear-gradient(180deg, rgba(15,15,15,.82) 0%, rgba(15,15,15,.68) 55%, rgba(15,15,15,.54) 100%), url('../images/capa-voice-comp-JReUmkO5Cal5pq91.jpg') center/cover no-repeat; }
  section { padding: 74px 0; }
  .section-grid, .city .section-grid, .contact-grid, .demo-showcase { grid-template-columns: 1fr; }
  .benefits-header { display: block; }
  .cards { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .logo { width: 160px; }
  .hero p, .lead { font-size: 1rem; }
  .cards { grid-template-columns: 1fr; }
  .service .visual-stack { grid-template-columns: 1fr; }
  .service .small-card { transform: none; }
  .image-card img, .demo-wide img, .demo-phone img { min-height: 330px; }
  .button { width: 100%; }
  .contact-card { padding: 24px; }
}