:root {
  --bg-main: #020817;
  --bg-secondary: #06152d;
  --bg-card: rgba(10, 31, 64, 0.72);
  --bg-card-soft: rgba(255, 255, 255, 0.045);

  --blue: #1e75ff;
  --blue-2: #2d9cff;
  --blue-soft: rgba(30, 117, 255, 0.16);

  --white: #ffffff;
  --text: #eef5ff;
  --muted: #aab8d0;

  --border: rgba(126, 172, 255, 0.24);
  --shadow: 0 26px 70px rgba(0, 0, 0, 0.35);

  --red: #ff2d3f;
  --orange: #ff8a00;
  --green: #52d267;
  --teal: #00c7c7;
  --purple: #a85cff;

  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;

  --max-width: 1180px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  background:
    radial-gradient(circle at top right, rgba(30, 117, 255, 0.20), transparent 34%),
    radial-gradient(circle at 20% 10%, rgba(45, 156, 255, 0.12), transparent 30%),
    linear-gradient(180deg, #020817 0%, #031126 46%, #020817 100%);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.65), transparent 80%);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(var(--max-width), calc(100% - 42px));
  margin: 0 auto;
}

/* HEADER */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(2, 8, 23, 0.82);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(126, 172, 255, 0.16);
}

.header-content {
  height: 86px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: max-content;
}

.brand-logo {
  width: 128px;
  height: auto;
  filter: drop-shadow(0 0 16px rgba(30, 117, 255, 0.25));
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
  text-transform: uppercase;
  letter-spacing: -0.03em;
}

.brand-text strong {
  font-size: 1rem;
}

.brand-text span {
  font-size: 0.95rem;
  font-weight: 700;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 600;
}

.main-nav a {
  position: relative;
  padding: 10px 0;
  transition: color 0.25s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--blue-2);
}

.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 2px;
  background: var(--blue);
  border-radius: 999px;
}

.btn-header {
  min-width: max-content;
  padding: 13px 22px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--blue), #0057d9);
  color: var(--white);
  font-weight: 800;
  box-shadow: 0 12px 30px rgba(30, 117, 255, 0.32);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.btn-header:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 38px rgba(30, 117, 255, 0.42);
}

/* HERO */

.hero {
  position: relative;
  padding: 82px 0 72px;
  border-bottom: 1px solid rgba(126, 172, 255, 0.13);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 0.95fr;
  align-items: center;
  gap: 62px;
}

.eyebrow {
  display: inline-flex;
  margin-bottom: 20px;
  color: var(--blue-2);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.8rem;
  font-weight: 900;
}

.hero h1 {
  max-width: 710px;
  color: var(--white);
  font-size: clamp(2.55rem, 5.7vw, 5.4rem);
  line-height: 0.96;
  letter-spacing: -0.075em;
  margin-bottom: 24px;
}

.hero-line {
  width: 48px;
  height: 3px;
  background: var(--blue);
  border-radius: 999px;
  margin-bottom: 24px;
  box-shadow: 0 0 24px rgba(30, 117, 255, 0.85);
}

.hero p {
  max-width: 660px;
  color: #d7e4f7;
  font-size: 1.08rem;
  margin-bottom: 30px;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-bottom: 34px;
  flex-wrap: wrap;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 13px;
}

.meta-icon {
  width: 48px;
  height: 48px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  color: var(--blue-2);
  box-shadow: inset 0 0 18px rgba(30, 117, 255, 0.14);
}

.meta-item small {
  display: block;
  color: var(--blue-2);
  font-weight: 700;
}

.meta-item strong {
  display: block;
  color: var(--white);
  font-size: 1.03rem;
}

.meta-divider {
  width: 1px;
  height: 44px;
  background: rgba(126, 172, 255, 0.32);
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 12px;
  font-weight: 850;
  transition: all 0.25s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue), #005eea);
  color: var(--white);
  box-shadow: 0 16px 38px rgba(30, 117, 255, 0.30);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 46px rgba(30, 117, 255, 0.42);
}

.btn-secondary {
  color: var(--white);
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.035);
}

.btn-secondary:hover {
  border-color: var(--blue);
  background: rgba(30, 117, 255, 0.10);
}

/* HERO VISUAL LIMPIO */

.hero-visual {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-visual-card {
  position: relative;
  width: 100%;
  min-height: 450px;
  border-radius: 34px;
  overflow: hidden;
  background: linear-gradient(135deg, #07162d, #0b2346);
  border: 1px solid rgba(126, 172, 255, 0.18);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.35);
  isolation: isolate;
}

.hero-metro-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center right;
  z-index: 1;
  filter: brightness(0.88) saturate(1.08) contrast(1.04);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(90deg, rgba(2, 8, 23, 0.62) 0%, rgba(2, 8, 23, 0.28) 38%, rgba(2, 8, 23, 0.06) 100%),
    radial-gradient(circle at 45% 45%, rgba(30, 117, 255, 0.14), transparent 28%);
}

.hero-logo-badge {
  position: absolute;
  z-index: 5;
  left: 34px;
  top: 50%;
  transform: translateY(-50%);
  width: 300px;
  max-width: 58%;
  padding: 12px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.98);
  border: 4px solid var(--blue);
  box-shadow:
    0 0 34px rgba(30, 117, 255, 0.55),
    0 0 90px rgba(30, 117, 255, 0.22);
}

.hero-logo-badge img {
  width: 100%;
  height: auto;
  display: block;
}

.hero-glow-ring {
  position: absolute;
  border-radius: 999px;
  border: 1px solid rgba(126, 172, 255, 0.14);
  z-index: 3;
  pointer-events: none;
}

.ring-one {
  width: 520px;
  height: 520px;
  top: -70px;
  left: -110px;
}

.ring-two {
  width: 310px;
  height: 310px;
  top: 70px;
  left: 28px;
}

.hero-dot {
  position: absolute;
  z-index: 6;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--blue-2);
  box-shadow: 0 0 18px rgba(45, 156, 255, 0.9);
}

.dot-one {
  top: 80px;
  right: 90px;
}

.dot-two {
  bottom: 70px;
  left: 75px;
}

/* GENERAL SECTIONS */

.section {
  padding: 74px 0;
}

.section-title {
  margin-bottom: 36px;
}

.section-title.center {
  text-align: center;
}

.section-title span,
.section-kicker {
  display: block;
  color: var(--blue-2);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.82rem;
  font-weight: 900;
  margin-bottom: 8px;
}

.section-title h2,
.coverage-text h2,
.about-box h2 {
  color: var(--white);
  font-size: clamp(1.8rem, 3.6vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.045em;
}

/* SERVICES */

.services {
  background: linear-gradient(180deg, rgba(4, 17, 38, 0.78), rgba(2, 8, 23, 0.15));
  border-top: 1px solid rgba(126, 172, 255, 0.11);
  border-bottom: 1px solid rgba(126, 172, 255, 0.11);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.service-card {
  min-height: 260px;
  padding: 30px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(10,31,64,0.84), rgba(5,17,39,0.72));
  border: 1px solid var(--border);
  box-shadow: 0 20px 42px rgba(0,0,0,0.18);
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(45, 156, 255, 0.55);
  background:
    linear-gradient(180deg, rgba(13,45,92,0.92), rgba(5,17,39,0.76));
}

.service-icon {
  width: 58px;
  height: 58px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  margin-bottom: 22px;
  color: var(--white);
  font-size: 1.45rem;
  font-weight: 900;
  background: rgba(30, 117, 255, 0.16);
  border: 1px solid rgba(45,156,255,0.45);
  box-shadow:
    inset 0 0 24px rgba(30,117,255,0.18),
    0 0 28px rgba(30,117,255,0.20);
}

.service-card h3 {
  color: var(--white);
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.service-card p {
  color: var(--muted);
  font-size: 0.97rem;
}

/* COVERAGE */

.coverage {
  position: relative;
  overflow: hidden;
}

.coverage::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 65% 45%, rgba(30,117,255,0.18), transparent 30%),
    linear-gradient(90deg, rgba(30,117,255,0.05), transparent);
  pointer-events: none;
}

.coverage-grid {
  position: relative;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 52px;
  align-items: center;
}

.coverage-text p {
  color: var(--muted);
  max-width: 530px;
  margin-top: 20px;
  font-size: 1.02rem;
}

.line-red { color: var(--red); }
.line-orange { color: var(--orange); }
.line-green { color: var(--green); }
.line-teal { color: var(--teal); }
.line-purple { color: var(--purple); }

.metro-map {
  position: relative;
  min-height: 300px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(10,31,64,0.45), rgba(5,17,39,0.28));
  border: 1px solid rgba(126,172,255,0.17);
  overflow: hidden;
  padding: 48px 44px;
}

.metro-map::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.18;
  background-image:
    linear-gradient(30deg, transparent 40%, rgba(126,172,255,0.22) 41%, transparent 43%),
    linear-gradient(150deg, transparent 50%, rgba(126,172,255,0.16) 51%, transparent 53%);
  background-size: 180px 140px;
}

.metro-line-track {
  position: absolute;
  left: 70px;
  right: 70px;
  top: 128px;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--red), var(--orange), var(--green), var(--teal), var(--purple));
  box-shadow: 0 0 24px rgba(45,156,255,0.42);
}

.line-node {
  position: absolute;
  z-index: 3;
  top: 86px;
  width: 68px;
  height: 68px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  color: var(--white);
  font-size: 1.45rem;
  font-weight: 900;
  background: rgba(2,8,23,0.78);
}

.line-node::after {
  content: "";
  position: absolute;
  bottom: -47px;
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: var(--white);
  box-shadow: 0 0 20px currentColor;
}

.node-red {
  left: 10%;
  border: 3px solid var(--red);
  color: var(--red);
}

.node-orange {
  left: 27%;
  border: 3px solid var(--orange);
  color: var(--orange);
}

.node-green {
  left: 45%;
  border: 3px solid var(--green);
  color: var(--green);
}

.node-teal {
  left: 63%;
  border: 3px solid var(--teal);
  color: var(--teal);
}

.node-purple {
  left: 81%;
  border: 3px solid var(--purple);
  color: var(--purple);
}

.operation-types {
  position: absolute;
  left: 60px;
  right: 60px;
  bottom: 38px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.operation-types div {
  padding: 16px 18px;
  border-radius: 16px;
  background: rgba(255,255,255,0.045);
  border: 1px solid rgba(126,172,255,0.20);
}

.operation-types strong {
  display: block;
  color: var(--white);
}

.operation-types small {
  color: var(--muted);
}

/* COMMITMENT */

.commitment {
  border-top: 1px solid rgba(126, 172, 255, 0.11);
  border-bottom: 1px solid rgba(126, 172, 255, 0.11);
  background: rgba(3, 13, 31, 0.45);
}

.commitment-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid rgba(126,172,255,0.14);
  background: rgba(126,172,255,0.12);
}

.commitment-item {
  padding: 30px;
  background: rgba(2,8,23,0.72);
}

.commitment-icon {
  color: #8ebaff;
  font-size: 2rem;
  margin-bottom: 18px;
  min-height: 40px;
}

.commitment-item h3 {
  color: var(--white);
  margin-bottom: 8px;
  font-size: 1.1rem;
}

.commitment-item p {
  color: var(--muted);
  font-size: 0.96rem;
}

/* ABOUT */

.about-box {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 42px;
  align-items: start;
  padding: 40px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, rgba(30,117,255,0.13), rgba(255,255,255,0.035));
  border: 1px solid var(--border);
}

.about-box p {
  color: #d7e4f7;
  font-size: 1.08rem;
}

/* CTA */

.cta {
  padding: 42px 0 86px;
}

.cta-box {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 28px;
  align-items: center;
  padding: 32px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, rgba(10,31,64,0.88), rgba(5,17,39,0.72));
  border: 1px solid rgba(45,156,255,0.38);
  box-shadow:
    0 22px 54px rgba(0,0,0,0.28),
    inset 0 0 40px rgba(30,117,255,0.08);
}

.cta-icon {
  width: 82px;
  height: 82px;
  border-radius: 24px;
  display: grid;
  place-items: center;
  color: var(--blue-2);
  font-size: 2rem;
  background: rgba(30,117,255,0.12);
  border: 1px solid rgba(45,156,255,0.42);
  box-shadow: 0 0 36px rgba(30,117,255,0.20);
}

.cta-text h2 {
  color: var(--white);
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  letter-spacing: -0.04em;
}

.cta-text p {
  color: var(--blue-2);
  font-size: 1.05rem;
}

.cta-actions {
  display: flex;
  align-items: center;
  gap: 24px;
}

.contact-info {
  display: grid;
  gap: 6px;
  color: #d7e4f7;
  font-size: 0.95rem;
}

/* FOOTER */

.footer {
  padding: 28px 0;
  border-top: 1px solid rgba(126,172,255,0.14);
  color: var(--muted);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 0.92rem;
}

/* RESPONSIVE */

@media (max-width: 1060px) {
  .main-nav {
    display: none;
  }

  .hero-grid,
  .coverage-grid,
  .about-box,
  .cta-box {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 460px;
  }

  .services-grid,
  .commitment-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cta-actions {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(100% - 28px, var(--max-width));
  }

  .header-content {
    height: auto;
    padding: 16px 0;
  }

  .brand-logo {
    width: 104px;
  }

  .brand-text {
    display: none;
  }

  .btn-header {
    padding: 11px 16px;
    font-size: 0.9rem;
  }

  .hero {
    padding: 58px 0;
  }

  .hero h1 {
    font-size: clamp(2.3rem, 12vw, 3.5rem);
  }

  .hero-meta {
    align-items: flex-start;
    flex-direction: column;
  }

  .meta-divider {
    display: none;
  }

  .hero-visual {
    min-height: 360px;
  }

  .train-card {
    min-height: 330px;
  }

  .logo-glow {
    width: 245px;
    top: 85px;
  }

  .train-shape {
    width: 200px;
    right: 10px;
    bottom: 42px;
  }

  .services-grid,
  .commitment-grid {
    grid-template-columns: 1fr;
  }

  .metro-map {
    min-height: 420px;
    padding: 30px 20px;
  }

  .metro-line-track {
    top: 160px;
    left: 34px;
    right: 34px;
  }

  .line-node {
    width: 54px;
    height: 54px;
    font-size: 1.08rem;
    top: 125px;
  }

  .operation-types {
    grid-template-columns: 1fr;
    left: 22px;
    right: 22px;
    bottom: 24px;
  }

  .about-box,
  .cta-box {
    padding: 26px;
  }
}

@media (max-width: 680px) {
  .hero-visual {
    min-height: 360px;
  }

  .train-card {
    min-height: 330px;
  }

  .hero-metro-image {
    object-position: center;
  }

  .logo-glow {
    width: 240px;
    top: 78px;
    padding: 14px 22px;
  }

  .ring-one {
    width: 340px;
    height: 340px;
    top: 10px;
    right: -40px;
  }

  .ring-two {
    width: 220px;
    height: 220px;
    top: 90px;
    right: 30px;
  }
}