:root {
  color-scheme: dark;
  --navy-950: #030b1c;
  --navy-900: #06152f;
  --navy-800: #0b2145;
  --blue-600: #2563eb;
  --blue-500: #3b82f6;
  --blue-300: #93c5fd;
  --white: #f8fbff;
  --muted: #b9c6dc;
  --line: rgba(147, 197, 253, 0.18);
  --shadow: 0 22px 70px rgba(0, 7, 24, 0.32);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 78px;
}

body {
  margin: 0;
  background: var(--navy-950);
  color: var(--white);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  padding: 0 5vw;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(3, 11, 28, 0.82);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  color: var(--white);
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  font-weight: 900;
  font-style: italic;
  letter-spacing: -0.04em;
}

.brand strong {
  color: var(--blue-500);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 1.8vw, 2rem);
  font-size: 0.95rem;
  font-weight: 650;
}

.main-nav a {
  color: #dce8fa;
  transition: color 180ms ease, transform 180ms ease;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: #fff;
  transform: translateY(-1px);
}

.main-nav .nav-access {
  padding: 0.65rem 1rem;
  border: 1px solid rgba(96, 165, 250, 0.5);
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.13);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
}

.menu-toggle span {
  display: block;
  height: 2px;
  margin: 5px 0;
  border-radius: 2px;
  background: white;
}

.hero {
  position: relative;
  display: grid;
  min-height: 780px;
  place-items: center start;
  overflow: hidden;
  padding: 140px 7vw 90px;
  isolation: isolate;
}

.hero-image,
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero-image {
  background: url("./assets/trackvolt-hero.webp") 58% center / cover no-repeat;
}

.hero-overlay {
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(2, 9, 24, 0.99) 0%, rgba(3, 13, 34, 0.93) 35%, rgba(4, 15, 39, 0.36) 69%, rgba(2, 9, 24, 0.2) 100%),
    linear-gradient(0deg, var(--navy-950) 0%, transparent 28%);
}

.hero-content {
  width: min(610px, 92vw);
}

.eyebrow {
  margin: 0 0 0.9rem;
  color: var(--blue-300);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 600px;
  margin-bottom: 1.25rem;
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  line-height: 0.98;
  letter-spacing: -0.06em;
}

.hero-copy {
  max-width: 550px;
  margin-bottom: 2rem;
  color: #d8e5f8;
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0.8rem 1.35rem;
  border: 1px solid transparent;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 800;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  background: linear-gradient(135deg, #2f79f5, #1d55cb);
  box-shadow: 0 13px 28px rgba(37, 99, 235, 0.3);
}

.button-primary:hover,
.button-primary:focus-visible {
  box-shadow: 0 16px 38px rgba(37, 99, 235, 0.48);
}

.button-ghost {
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
}

.tagline {
  margin: 1.5rem 0 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

.hero-pills {
  position: absolute;
  right: 6vw;
  bottom: 50px;
  display: flex;
  gap: 0.65rem;
}

.hero-pills span,
.access-features span {
  padding: 0.48rem 0.78rem;
  border: 1px solid rgba(147, 197, 253, 0.22);
  border-radius: 999px;
  background: rgba(3, 11, 28, 0.64);
  color: #e9f3ff;
  font-size: 0.8rem;
  font-weight: 700;
  backdrop-filter: blur(10px);
}

.section {
  padding: 110px 6vw;
}

.about-section {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 88% 18%, rgba(37, 99, 235, 0.2), transparent 32%),
    linear-gradient(135deg, #05132e, #030b1c 68%);
}

.about-shell {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(2.5rem, 7vw, 7rem);
  align-items: start;
  width: min(1120px, 100%);
  margin: auto;
}

.about-heading {
  position: sticky;
  top: 110px;
}

.about-heading h2 {
  margin-bottom: 2rem;
  font-size: clamp(2rem, 4vw, 3.45rem);
  line-height: 1.06;
  letter-spacing: -0.05em;
}

.about-origin {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: center;
  width: min(390px, 100%);
  padding-top: 1.25rem;
  border-top: 1px solid rgba(147, 197, 253, 0.24);
}

.about-origin strong {
  color: var(--blue-300);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  line-height: 1;
}

.about-origin span {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.35;
}

.about-content {
  padding: clamp(1.6rem, 4vw, 2.7rem);
  border: 1px solid var(--line);
  border-radius: 26px;
  background: linear-gradient(145deg, rgba(15, 42, 83, 0.7), rgba(5, 18, 42, 0.82));
  box-shadow: var(--shadow);
}

.about-content p {
  color: #d5e1f3;
  font-size: 1rem;
}

.about-content p:last-of-type {
  margin-bottom: 0;
}

.about-values {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.7rem;
  padding-top: 1.35rem;
  border-top: 1px solid var(--line);
}

.about-values span {
  padding: 0.48rem 0.78rem;
  border: 1px solid rgba(147, 197, 253, 0.24);
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.12);
  color: #e7f1ff;
  font-size: 0.82rem;
  font-weight: 750;
}

.services {
  background:
    radial-gradient(circle at 15% 0%, rgba(37, 99, 235, 0.17), transparent 33%),
    var(--navy-950);
}

.section-heading {
  width: min(700px, 100%);
  margin: 0 auto 3.3rem;
  text-align: center;
}

.section-heading h2,
.protection h2,
.access-copy h2 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.section-heading > p:last-child,
.access-copy > p {
  color: var(--muted);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  width: min(1160px, 100%);
  margin: auto;
}

.service-card {
  min-height: 230px;
  padding: 1.7rem;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: linear-gradient(145deg, rgba(18, 43, 82, 0.76), rgba(7, 23, 51, 0.78));
  box-shadow: 0 10px 35px rgba(0, 7, 24, 0.13);
  transition: border-color 180ms ease, transform 180ms ease, background 180ms ease;
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: rgba(96, 165, 250, 0.42);
  background: linear-gradient(145deg, rgba(22, 55, 104, 0.85), rgba(8, 28, 63, 0.84));
}

.service-icon,
.access-symbol {
  display: grid;
  width: 48px;
  height: 48px;
  margin-bottom: 1.4rem;
  border: 1px solid rgba(96, 165, 250, 0.35);
  border-radius: 14px;
  background: rgba(37, 99, 235, 0.16);
  place-items: center;
}

.service-icon svg,
.access-symbol svg {
  width: 24px;
  fill: none;
  stroke: #8fc4ff;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.service-card h3 {
  margin-bottom: 0.55rem;
  font-size: 1.12rem;
}

.service-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.process-section {
  border-top: 1px solid var(--line);
  background:
    radial-gradient(circle at 85% 15%, rgba(59, 130, 246, 0.16), transparent 30%),
    linear-gradient(180deg, #041027, var(--navy-950));
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  width: min(1120px, 100%);
  margin: auto;
}

.process-card {
  position: relative;
  min-height: 215px;
  padding: 1.7rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: linear-gradient(145deg, rgba(15, 42, 83, 0.72), rgba(5, 18, 42, 0.86));
}

.process-number {
  display: inline-flex;
  margin-bottom: 2rem;
  color: var(--blue-300);
  font-size: 0.85rem;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.process-card h3 {
  margin-bottom: 0.55rem;
  font-size: 1.16rem;
}

.process-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.coverage-section {
  padding: 78px 6vw;
  border-block: 1px solid var(--line);
  background:
    linear-gradient(115deg, rgba(37, 99, 235, 0.27), rgba(5, 19, 43, 0.84)),
    var(--navy-900);
}

.coverage-inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
  width: min(920px, 100%);
  margin: auto;
}

.coverage-mark {
  display: grid;
  width: clamp(76px, 10vw, 106px);
  aspect-ratio: 1;
  border: 1px solid rgba(147, 197, 253, 0.35);
  border-radius: 28px;
  background: rgba(3, 11, 28, 0.5);
  place-items: center;
}

.coverage-mark svg {
  width: 46%;
  fill: none;
  stroke: #9dcbff;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.6;
}

.coverage-inner h2 {
  margin-bottom: 0.7rem;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.coverage-inner p:last-child {
  max-width: 720px;
  margin-bottom: 0;
  color: #d4e0f2;
}

.faq-section {
  background:
    radial-gradient(circle at 12% 88%, rgba(37, 99, 235, 0.14), transparent 32%),
    #041027;
}

.faq-shell {
  display: grid;
  grid-template-columns: minmax(250px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(2rem, 6vw, 6rem);
  width: min(1120px, 100%);
  margin: auto;
}

.faq-heading h2 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.faq-heading > p:last-child {
  color: var(--muted);
}

.faq-list {
  display: grid;
  gap: 0.75rem;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(145deg, rgba(15, 42, 83, 0.62), rgba(5, 18, 42, 0.82));
}

.faq-list summary {
  position: relative;
  padding: 1.15rem 3.25rem 1.15rem 1.25rem;
  cursor: pointer;
  color: var(--white);
  font-size: 1rem;
  font-weight: 750;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  position: absolute;
  top: 50%;
  right: 1.25rem;
  color: var(--blue-300);
  content: "+";
  font-size: 1.45rem;
  font-weight: 400;
  transform: translateY(-50%);
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list details p {
  margin: 0;
  padding: 0 1.25rem 1.2rem;
  color: var(--muted);
  font-size: 0.94rem;
}

.protection {
  padding: 75px 6vw;
  border-block: 1px solid var(--line);
  background:
    linear-gradient(115deg, rgba(37, 99, 235, 0.24), rgba(5, 19, 43, 0.78)),
    var(--navy-900);
}

.protection-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 5vw;
  align-items: center;
  width: min(1120px, 100%);
  margin: auto;
}

.protection h2,
.protection p {
  margin-bottom: 0;
}

.protection-inner > p {
  color: #d4e0f2;
  font-size: 1.08rem;
}

.access-section {
  background:
    radial-gradient(circle at 90% 10%, rgba(59, 130, 246, 0.15), transparent 34%),
    #041027;
}

.access-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 430px);
  gap: 4vw;
  align-items: center;
  width: min(1120px, 100%);
  margin: auto;
  padding: clamp(2rem, 5vw, 4.5rem);
  border: 1px solid var(--line);
  border-radius: 30px;
  background: linear-gradient(135deg, rgba(12, 35, 73, 0.88), rgba(5, 18, 42, 0.96));
  box-shadow: var(--shadow);
}

.access-features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.5rem;
}

.access-card {
  padding: 2rem;
  border: 1px solid rgba(147, 197, 253, 0.24);
  border-radius: 22px;
  background: rgba(3, 11, 28, 0.78);
  box-shadow: 0 20px 50px rgba(0, 5, 18, 0.28);
}

.access-card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.3rem;
}

.access-card p {
  margin-bottom: 1.2rem;
  color: var(--muted);
  font-size: 0.93rem;
}

.access-card small {
  display: block;
  margin-top: 0.8rem;
  color: #91a3be;
  text-align: center;
}

.button-full {
  width: 100%;
}

.contact-section {
  padding: 0 6vw 110px;
  background:
    radial-gradient(circle at 10% 100%, rgba(37, 99, 235, 0.14), transparent 34%),
    #041027;
}

.contact-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(430px, 1.2fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  width: min(1120px, 100%);
  margin: auto;
  padding: clamp(2rem, 5vw, 3.5rem);
  border: 1px solid var(--line);
  border-radius: 30px;
  background: linear-gradient(135deg, rgba(10, 31, 66, 0.9), rgba(4, 15, 36, 0.96));
  box-shadow: var(--shadow);
}

.contact-copy h2 {
  margin-bottom: 0.85rem;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.contact-copy > p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.contact-links {
  display: grid;
  gap: 0.85rem;
}

.contact-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  min-height: 86px;
  padding: 1rem 1.15rem;
  border: 1px solid rgba(147, 197, 253, 0.2);
  border-radius: 18px;
  background: rgba(3, 11, 28, 0.7);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.contact-link:hover,
.contact-link:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(96, 165, 250, 0.55);
  background: rgba(11, 33, 70, 0.9);
}

.contact-icon {
  display: grid;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(96, 165, 250, 0.35);
  border-radius: 14px;
  background: rgba(37, 99, 235, 0.16);
  place-items: center;
}

.contact-icon svg {
  width: 24px;
  fill: none;
  stroke: #8fc4ff;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.contact-icon svg .contact-icon-fill {
  fill: #8fc4ff;
  stroke: none;
}

.contact-link small,
.contact-link strong {
  display: block;
}

.contact-link small {
  margin-bottom: 0.12rem;
  color: #91a3be;
  font-size: 0.78rem;
}

.contact-link strong {
  overflow-wrap: anywhere;
  color: var(--white);
  font-size: 1rem;
}

.contact-arrow {
  color: var(--blue-300);
  font-size: 1.35rem;
  transition: transform 180ms ease;
}

.contact-link:hover .contact-arrow,
.contact-link:focus-visible .contact-arrow {
  transform: translateX(3px);
}

footer {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 2rem;
  align-items: center;
  padding: 2rem 6vw;
  border-top: 1px solid var(--line);
  background: #020817;
  color: #8ea0ba;
  font-size: 0.82rem;
}

footer p {
  margin: 0;
}

.footer-brand {
  font-size: 1.15rem;
}

@media (max-width: 900px) {
  .site-header {
    min-height: 68px;
  }

  .menu-toggle {
    display: block;
  }

  .main-nav {
    position: absolute;
    top: 68px;
    right: 4vw;
    display: none;
    width: min(290px, 92vw);
    padding: 0.8rem;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: rgba(3, 11, 28, 0.97);
    box-shadow: var(--shadow);
  }

  .main-nav.open {
    display: grid;
  }

  .main-nav a {
    padding: 0.8rem;
  }

  .hero {
    min-height: 720px;
    padding-inline: 6vw;
  }

  .hero-image {
    background-position: 68% center;
  }

  .hero-overlay {
    background:
      linear-gradient(90deg, rgba(2, 9, 24, 0.98), rgba(2, 9, 24, 0.78) 60%, rgba(2, 9, 24, 0.36)),
      linear-gradient(0deg, var(--navy-950), transparent 40%);
  }

  .hero-pills {
    right: auto;
    left: 6vw;
  }

  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .process-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .about-shell {
    grid-template-columns: 1fr;
  }

  .about-heading {
    position: static;
  }

  .protection-inner,
  .access-panel,
  .contact-inner,
  .faq-shell {
    grid-template-columns: 1fr;
  }

  footer {
    grid-template-columns: 1fr;
    gap: 0.55rem;
    text-align: center;
  }

  .footer-brand {
    justify-content: center;
  }
}

@media (max-width: 600px) {
  .site-header {
    padding-inline: 1rem;
  }

  .hero {
    min-height: 690px;
    padding: 120px 1.15rem 105px;
  }

  .hero-image {
    background-position: 71% center;
  }

  .hero-overlay {
    background:
      linear-gradient(90deg, rgba(2, 9, 24, 0.97), rgba(2, 9, 24, 0.7)),
      linear-gradient(0deg, var(--navy-950) 0%, transparent 48%);
  }

  h1 {
    font-size: clamp(2.65rem, 14vw, 4rem);
  }

  .hero-actions,
  .hero-actions .button {
    width: 100%;
  }

  .hero-pills {
    right: 1.15rem;
    bottom: 35px;
    left: 1.15rem;
    flex-wrap: wrap;
  }

  .section {
    padding: 78px 1rem;
  }

  .about-shell {
    gap: 2rem;
  }

  .about-heading h2 {
    margin-bottom: 1.5rem;
  }

  .about-origin {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }

  .about-content {
    padding: 1.25rem;
    border-radius: 20px;
  }

  .service-grid {
    grid-template-columns: 1fr;
  }

  .process-grid {
    grid-template-columns: 1fr;
  }

  .process-card {
    min-height: 0;
  }

  .coverage-section {
    padding: 64px 1rem;
  }

  .coverage-inner {
    grid-template-columns: 1fr;
  }

  .coverage-mark {
    width: 72px;
    border-radius: 22px;
  }

  .service-card {
    min-height: 0;
  }

  .protection {
    padding: 64px 1rem;
  }

  .access-panel {
    padding: 1.2rem;
    border-radius: 22px;
  }

  .access-card {
    padding: 1.35rem;
  }

  .contact-section {
    padding: 0 1rem 78px;
  }

  .contact-inner {
    padding: 1.2rem;
    border-radius: 22px;
  }

  .contact-link {
    gap: 0.8rem;
    min-height: 78px;
    padding: 0.85rem;
  }

  .contact-icon {
    width: 43px;
    height: 43px;
  }

  footer {
    padding-inline: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}