:root {
  --color-bg: #f5fbfe;
  --color-surface: #ffffff;
  --color-text: #16222a;
  --color-muted: #51606b;
  --color-primary: #0ea4c2;
  --color-primary-dark: #0a7f96;
  --color-accent: #74def3;
  --color-border: #dceaf2;
  --color-ink: #0b2b36;
  --shadow-soft: 0 18px 40px rgba(12, 60, 78, 0.12);
  --shadow-card: 0 14px 30px rgba(12, 60, 78, 0.12);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --max-width: 1160px;
  --header-height: 72px;
  --transition-fast: 160ms ease;
  --transition-medium: 320ms ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Poppins", "Inter", system-ui, -apple-system, sans-serif;
  color: var(--color-text);
  background: linear-gradient(180deg, #f3f9fc 0%, #ffffff 40%, #f7fbfd 100%);
  min-height: 100vh;
}

body.nav-open {
  overflow: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 10% 10%, rgba(116, 222, 243, 0.18), transparent 45%),
    radial-gradient(circle at 90% 20%, rgba(14, 164, 194, 0.16), transparent 50%),
    radial-gradient(circle at 50% 80%, rgba(14, 164, 194, 0.1), transparent 45%);
  z-index: -2;
  pointer-events: none;
}

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

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid rgba(14, 164, 194, 0.4);
  outline-offset: 2px;
  border-radius: 6px;
}

p {
  margin: 0 0 1rem;
  color: var(--color-muted);
  line-height: 1.7;
}

h1,
h2,
h3,
h4 {
  margin: 0 0 1rem;
  color: var(--color-ink);
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.2rem, 3vw, 3.4rem);
  font-weight: 600;
}

h2 {
  font-size: clamp(1.6rem, 2.3vw, 2.4rem);
  font-weight: 600;
}

h3 {
  font-size: clamp(1.2rem, 1.7vw, 1.5rem);
  font-weight: 600;
}

.container {
  width: min(100% - 2.5rem, var(--max-width));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 10px;
  background: var(--color-ink);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: 999px;
  z-index: 20;
}

.skip-link:focus {
  left: 1.5rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  overflow: hidden;
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.78);
  border-bottom: 1px solid transparent;
  transition: background var(--transition-medium), box-shadow var(--transition-medium), border var(--transition-medium);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 10px 24px rgba(12, 60, 78, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 120px;
  padding: 0;
}

.logo {
  display: flex;
  align-items: center;
  height: 82px;
  overflow: hidden;
}

.logo img {
  width: 190px;
  height: 190px;
  object-fit: contain;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0;
  margin: 0;
}

.nav a {
  font-size: 0.9rem;
  color: var(--color-muted);
  transition: color var(--transition-fast);
}

.nav a:hover,
.nav a.active {
  color: var(--color-primary-dark);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.btn-primary {
  background: linear-gradient(120deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  box-shadow: 0 16px 26px rgba(14, 164, 194, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 30px rgba(14, 164, 194, 0.25);
}

.btn-outline {
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
  background: rgba(14, 164, 194, 0.08);
}

.btn-outline:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(14, 164, 194, 0.16);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.4rem;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  margin: 5px 0;
  transition: transform var(--transition-medium), opacity var(--transition-medium);
}

body.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

body.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

body.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hero {
  position: relative;
  padding: 4.5rem 0 3.5rem;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  align-items: center;
  gap: 3rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  background: rgba(14, 164, 194, 0.12);
  color: var(--color-primary-dark);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

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

.hero-blob {
  position: absolute;
  width: min(420px, 90vw);
  height: min(420px, 90vw);
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(116, 222, 243, 0.9), rgba(14, 164, 194, 0.12));
  filter: blur(2px);
  animation: floatBlob 12s ease-in-out infinite;
  z-index: -1;
}

.hero-product {
  width: min(360px, 85vw);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft);
  transform: translateY(0);
  animation: floatProduct 7s ease-in-out infinite;
}

@keyframes floatBlob {
  0%,
  100% {
    transform: translate(-10px, -10px) scale(1);
  }
  50% {
    transform: translate(20px, 10px) scale(1.05);
  }
}

@keyframes floatProduct {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

.section {
  padding: 3.5rem 0;
}

section[id] {
  scroll-margin-top: calc(var(--header-height) + 20px);
}

.section.alt {
  background: rgba(255, 255, 255, 0.75);
  border-radius: var(--radius-xl);
  margin: 2.5rem auto;
  box-shadow: 0 24px 50px rgba(12, 60, 78, 0.08);
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.section-kicker {
  font-weight: 600;
  color: var(--color-primary-dark);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid.two {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.grid.three {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.grid.four {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  position: relative;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 36px rgba(12, 60, 78, 0.16);
}

.card img {
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
}

img[data-lightbox] {
  cursor: zoom-in;
}

.card-title {
  margin-bottom: 0.5rem;
}

.icon-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.9rem;
}

.icon-list li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  color: var(--color-muted);
}

.icon-list li::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
  margin-top: 0.45rem;
  flex-shrink: 0;
}

.section-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 12px 28px rgba(12, 60, 78, 0.08);
  border: 1px solid var(--color-border);
}

.section-nav a {
  font-weight: 500;
  color: var(--color-muted);
}

.section-nav a.active {
  color: var(--color-primary-dark);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.5rem;
}

.section-cta {
  margin-top: 2rem;
}

.cta-bar {
  background: linear-gradient(120deg, rgba(14, 164, 194, 0.12), rgba(116, 222, 243, 0.35));
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: grid;
  gap: 1rem;
  align-items: center;
}

.stats {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.stat {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  text-align: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-primary-dark);
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.tab-btn {
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.85);
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.tab-btn.active,
.tab-btn:hover {
  background: rgba(14, 164, 194, 0.12);
  border-color: rgba(14, 164, 194, 0.3);
  color: var(--color-primary-dark);
}

.product-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  background: rgba(14, 164, 194, 0.12);
  color: var(--color-primary-dark);
  font-size: 0.8rem;
  font-weight: 600;
}

.faq {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: 1.5rem;
}

.faq details {
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--color-border);
}

.faq details:last-child {
  border-bottom: none;
}

.faq summary {
  font-weight: 600;
  cursor: pointer;
}

.timeline {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.timeline-step {
  position: relative;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}

.timeline-step::before {
  content: attr(data-step);
  position: absolute;
  top: -14px;
  left: 1.2rem;
  background: var(--color-primary-dark);
  color: #fff;
  font-weight: 600;
  border-radius: 999px;
  padding: 0.3rem 0.8rem;
  font-size: 0.75rem;
}

.form-wrapper {
  background: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}

.form-grid {
  display: grid;
  gap: 1rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-field label {
  font-weight: 500;
}

.form-field input,
.form-field textarea,
.form-field select {
  padding: 0.8rem 0.9rem;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  font-family: inherit;
  font-size: 1rem;
}

.form-field textarea {
  min-height: 140px;
  resize: vertical;
}

.field-error {
  color: #b02626;
  font-size: 0.85rem;
  min-height: 1rem;
}

.contact-card {
  display: grid;
  gap: 0.5rem;
  padding: 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.footer {
  padding: 3rem 0 4rem;
  background: #0b2230;
  color: #dff7ff;
}

.footer a {
  color: #8fe7ff;
}

.footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.footer h4 {
  color: #fff;
}

.footer p {
  color: #dff7ff;
}

.brand-signature {
  margin-top: 1rem;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  margin-top: 0.5rem;
  text-decoration: none;
}

.brand-link img {
  width: 190px;
  max-width: 100%;
  height: auto;
  display: block;
}

.footer-bottom {
  margin-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 1.5rem;
  font-size: 0.9rem;
  color: #b6e9f8;
}

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(6, 21, 26, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-medium);
  z-index: 80;
}

.lightbox.open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-content {
  max-width: min(90vw, 840px);
  max-height: 80vh;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}

.lightbox img {
  width: 100%;
  height: auto;
  display: block;
}

.lightbox button {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  border: none;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  cursor: pointer;
}

.mobile-cta {
  position: fixed;
  bottom: 1rem;
  left: 1rem;
  right: 1rem;
  background: var(--color-surface);
  border-radius: 999px;
  padding: 0.6rem;
  box-shadow: var(--shadow-card);
  display: none;
  z-index: 40;
}

.mobile-cta a {
  width: 100%;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--transition-medium), transform var(--transition-medium);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 960px) {
  main {
    padding-bottom: 5rem;
  }

  .nav[data-nav] {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(320px, 80vw);
    background: #fff;
    flex-direction: column;
    padding: 6rem 2rem 2rem;
    transform: translateX(100%);
    transition: transform var(--transition-medium);
    box-shadow: -20px 0 40px rgba(12, 60, 78, 0.2);
  }

  body.nav-open .nav[data-nav] {
    transform: translateX(0);
  }

  .nav[data-nav] ul {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-cta {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .mobile-cta {
    display: block;
  }
}

@media (min-width: 960px) {
  .cta-bar {
    grid-template-columns: 1.2fr auto;
  }
}

@media (max-width: 720px) {
  .header-inner {
    min-height: 70px;
  }

  .logo {
    height: 70px;
  }

  .logo img {
    width: 130px;
    height: 130px;
  }

  .section {
    padding: 2.8rem 0;
  }

  .hero {
    padding-top: 3.5rem;
  }

  .section-nav {
    border-radius: 20px;
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}