:root {
  --navy-950: #061523;
  --navy-900: #0a2540;
  --navy-800: #0f3054;
  --navy-700: #17456e;
  --teal: #00b4d8;
  --teal-600: #0096b5;
  --teal-100: #dbf2f8;
  --slate-50: #f5f7fa;
  --slate-100: #edf1f6;
  --slate-200: #dce3ea;
  --slate-300: #c3cfdc;
  --slate-500: #66788a;
  --slate-600: #4c5c6c;
  --slate-700: #364450;
  --slate-800: #24313d;
  --green: #14b88a;
  --green-100: #e2f6ee;
  --white: #ffffff;
  --shadow-sm: 0 1px 2px rgba(10, 37, 64, 0.06);
  --shadow-md: 0 10px 30px rgba(10, 37, 64, 0.12);
  --shadow-lg: 0 24px 60px rgba(10, 37, 64, 0.18);
  --radius: 8px;
  --radius-sm: 6px;
  --font-sans: "Inter", "Source Han Sans SC", "Noto Sans SC", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  --header-h: 76px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--slate-700);
  background: var(--white);
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

h1,
h2,
h3,
h4 {
  color: var(--navy-900);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0;
}

.container {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  top: -60px;
  left: 16px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--teal);
  color: var(--navy-950);
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
}

.section {
  padding-block: 104px;
}

.eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--teal-600);
  text-transform: uppercase;
}

.eyebrow-on-dark {
  color: #7ad7e8;
}

.section-head {
  max-width: 720px;
  margin-bottom: 56px;
}

.section-head h2,
.contact-info h2 {
  margin-top: 12px;
  font-size: 40px;
  line-height: 1.2;
}

.section-sub {
  margin-top: 16px;
  color: var(--slate-600);
  font-size: 18px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease,
    border-color 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-lg {
  min-height: 56px;
  padding: 15px 28px;
  font-size: 16px;
}

.btn-primary {
  background: var(--teal);
  color: var(--navy-950);
}

.btn-primary:hover {
  background: #25c4e6;
  box-shadow: 0 10px 24px rgba(0, 180, 216, 0.35);
}

.btn-outline-light {
  background: transparent;
  color: #eaf7fb;
  border-color: rgba(255, 255, 255, 0.45);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
}

.btn-ghost-light {
  background: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.35);
}

.btn-ghost-light:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
}

.btn-block {
  width: 100%;
}

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: #ffffff;
}

.site-header.scrolled .brand {
  color: var(--navy-900);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: none;
}

.brand-logo {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-size: 17px;
  font-weight: 700;
}

.brand-sub {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0;
  opacity: 0.72;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 15px;
  font-weight: 500;
  color: #dcecf4;
}

.site-header.scrolled .site-nav {
  color: var(--slate-600);
}

.site-nav a {
  position: relative;
  padding-block: 6px;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--teal);
  transition: width 0.25s ease;
}

.site-nav a:hover::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  border-radius: 2px;
  background: #ffffff;
  transition: transform 0.25s ease, opacity 0.2s ease;
}

.site-header.scrolled .nav-toggle span {
  background: var(--navy-900);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 12px 24px 24px;
  background: #ffffff;
  border-top: 1px solid var(--slate-100);
  box-shadow: var(--shadow-md);
}

.mobile-nav a {
  padding: 12px 8px;
  color: var(--slate-700);
  font-weight: 500;
  border-bottom: 1px solid var(--slate-100);
}

.mobile-nav a.btn {
  margin-top: 12px;
  color: var(--navy-950);
  justify-content: center;
  border-bottom: 0;
}

.mobile-nav.open {
  display: flex;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--navy-950) 0%, var(--navy-900) 45%, #0d3456 100%);
  color: #ffffff;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 50% 55%,
    rgba(6, 21, 35, 0.18) 0%,
    rgba(6, 21, 35, 0.5) 58%,
    rgba(6, 21, 35, 0.84) 100%
  );
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 900px;
  padding-block: 120px;
}

.hero-eyebrow {
  margin-bottom: 22px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  color: #7ad7e8;
}

.hero h1 {
  font-size: 58px;
  line-height: 1.12;
  color: #ffffff;
  max-width: 820px;
  text-shadow: 0 2px 28px rgba(6, 21, 35, 0.45);
}

.hero-subtitle {
  margin-top: 24px;
  font-size: 20px;
  color: #c9e3ee;
  text-shadow: 0 1px 14px rgba(6, 21, 35, 0.45);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 40px;
}

.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 28px;
  z-index: 2;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.72);
  animation: float 2.4s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translate(-50%, 0);
  }
  50% {
    transform: translate(-50%, 8px);
  }
}

/* About */
.about {
  background: var(--slate-50);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 72px;
  align-items: center;
}

.about-copy h2 {
  margin-top: 12px;
  font-size: 40px;
}

.about-copy .lead {
  margin-top: 18px;
  font-size: 20px;
  font-weight: 600;
  color: var(--navy-800);
}

.about-copy .body {
  margin-top: 18px;
  color: var(--slate-600);
}

.about-note {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-top: 26px;
  padding: 14px 16px;
  border-left: 3px solid var(--teal);
  background: var(--white);
  border-radius: var(--radius);
  color: var(--slate-600);
  font-size: 14px;
  box-shadow: var(--shadow-sm);
}

.about-note svg {
  color: var(--teal-600);
  flex: none;
  margin-top: 3px;
}

.about-facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.fact-card {
  display: flex;
  flex-direction: column;
  min-height: 150px;
  padding: 26px;
  background: #ffffff;
  border: 1px solid var(--slate-100);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.fact-card-primary {
  background: var(--navy-900);
  color: #ffffff;
  justify-content: center;
}

.fact-number {
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  color: var(--navy-900);
}

.fact-card-primary .fact-number {
  color: #ffffff;
}

.fact-label {
  margin-top: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--slate-600);
}

.fact-card-primary .fact-label {
  color: #bcd8e6;
}

.fact-detail {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--slate-500);
}

.fact-card-wide {
  grid-column: 1 / -1;
  min-height: 0;
}

/* Advantages */
.advantages {
  background: #ffffff;
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.advantage-card {
  padding: 32px 28px;
  background: var(--slate-50);
  border: 1px solid var(--slate-100);
  border-radius: var(--radius);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.advantage-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--teal-100);
}

.icon-box {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--teal-100);
  color: var(--teal-600);
}

.advantage-card h3 {
  margin-top: 24px;
  font-size: 20px;
}

.advantage-card p {
  margin-top: 14px;
  color: var(--slate-600);
  font-size: 15px;
}

/* Products */
.products {
  background: var(--slate-50);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 28px;
  background: #ffffff;
  border: 1px solid var(--slate-100);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.product-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  flex: none;
  border-radius: 12px;
  background: var(--navy-900);
  color: #8fe4f4;
}

.product-card h3 {
  font-size: 18px;
}

.product-card p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate-600);
}

.products-note {
  margin-top: 24px;
  color: var(--slate-500);
  font-size: 14px;
}

/* Flagship */
.flagship {
  position: relative;
  background: linear-gradient(160deg, var(--navy-950), var(--navy-900) 60%, #0e3b60);
  color: #ffffff;
  overflow: hidden;
}

.flagship::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 80% 30%,
    rgba(0, 180, 216, 0.22),
    transparent 45%
  );
}

.flagship-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 64px;
  align-items: center;
}

.flagship-copy h2 {
  margin-top: 14px;
  color: #ffffff;
  font-size: 40px;
  line-height: 1.25;
}

.flagship-lead {
  margin-top: 18px;
  color: #bcd8e6;
  font-size: 18px;
}

.flagship-list {
  list-style: none;
  margin: 28px 0 32px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.flagship-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: #e6f2f8;
  font-size: 16px;
}

.flagship-list svg {
  color: #4ed7f0;
  flex: none;
  margin-top: 5px;
}

.flagship-compliance {
  padding: 34px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  backdrop-filter: blur(4px);
}

.compliance-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border-radius: 999px;
  background: var(--green-100);
  color: #08765a;
  font-size: 13px;
  font-weight: 700;
}

.flagship-compliance p {
  margin-top: 22px;
  color: #d5e6ef;
  line-height: 1.9;
}

/* Partnership */
.partnership {
  background: #ffffff;
}

.partner-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.partner-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 36px 32px;
  background: var(--slate-50);
  border: 1px solid var(--slate-100);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.partner-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.partner-card-accent {
  background: var(--navy-900);
  color: #ffffff;
  border-color: var(--navy-900);
}

.partner-step {
  position: absolute;
  top: 18px;
  right: 22px;
  font-size: 54px;
  font-weight: 700;
  line-height: 1;
  color: rgba(0, 180, 216, 0.14);
}

.partner-card h3 {
  margin-top: 26px;
  font-size: 22px;
}

.partner-card-accent h3 {
  color: #ffffff;
}

.partner-card p {
  margin-top: 14px;
  color: var(--slate-600);
  font-size: 15px;
}

.partner-card-accent p {
  color: #d5e6ef;
}

.partner-card-accent .icon-box {
  background: rgba(0, 180, 216, 0.16);
  color: #7ad7e8;
}

.flow-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.flow-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--slate-600);
  font-size: 15px;
}

.flow-list li::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
  flex: none;
}

.flow-list li + li {
  position: relative;
}

/* Contact */
.contact {
  background: var(--slate-50);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: start;
}

.contact-info h2 {
  font-size: 40px;
}

.contact-list {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 22px;
}

.contact-list li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  color: var(--slate-700);
}

.contact-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  flex: none;
  border-radius: 12px;
  background: var(--teal-100);
  color: var(--teal-600);
}

.contact-list small {
  display: block;
  color: var(--slate-500);
  font-size: 13px;
  margin-bottom: 3px;
}

.qr-box {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-top: 34px;
  padding: 16px 22px;
  background: #ffffff;
  border: 1px dashed var(--slate-300);
  border-radius: var(--radius);
  color: var(--slate-600);
  font-size: 14px;
  line-height: 1.5;
}

.qr-box svg {
  color: var(--slate-500);
}

.qr-box small {
  color: var(--slate-500);
}

.contact-form {
  padding: 36px;
  background: #ffffff;
  border: 1px solid var(--slate-100);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--slate-700);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-sm);
  background: #fbfcfd;
  color: var(--slate-800);
  font-family: inherit;
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0;
  resize: vertical;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.16);
}

.field input.invalid,
.field select.invalid,
.field textarea.invalid {
  border-color: #e05252;
  box-shadow: 0 0 0 3px rgba(224, 82, 82, 0.14);
}

.form-tip {
  margin: 2px 0 18px;
  color: var(--slate-500);
  font-size: 13px;
}

.form-success {
  display: none;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 13px 15px;
  border-radius: var(--radius-sm);
  background: var(--green-100);
  color: #08765a;
  font-size: 14px;
  font-weight: 600;
}

.form-success.visible {
  display: flex;
}

/* Footer */
.site-footer {
  background: var(--navy-950);
  color: #a9bccb;
  padding-top: 72px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand .brand {
  color: #ffffff;
}

.footer-brand p {
  margin-top: 20px;
  color: #8fa5b8;
  font-size: 15px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links h4 {
  color: #ffffff;
  font-size: 15px;
  margin-bottom: 6px;
}

.footer-links a {
  color: #8fa5b8;
  font-size: 14px;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: #7ad7e8;
}

.footer-bottom {
  padding-block: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p:first-child {
  color: #8fa5b8;
  font-size: 14px;
}

.footer-disclaimer {
  margin-top: 14px;
  color: #6f8497;
  font-size: 13px;
  line-height: 1.8;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.in-view {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .hero-scroll {
    animation: none;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (max-width: 1024px) {
  .site-nav {
    gap: 20px;
  }
  .about-grid,
  .flagship-grid {
    gap: 40px;
  }
  .advantage-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 820px) {
  .container {
    width: min(100% - 32px, 1180px);
  }
  .section {
    padding-block: 72px;
  }
  .site-nav,
  .header-actions .btn-ghost-light {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .hero h1 {
    font-size: 40px;
  }
  .hero-subtitle {
    font-size: 18px;
  }
  .about-grid,
  .flagship-grid,
  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .product-grid,
  .partner-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .section-head h2,
  .about-copy h2,
  .flagship-copy h2,
  .contact-info h2 {
    font-size: 34px;
  }
}

@media (max-width: 560px) {
  .hero {
    min-height: 720px;
  }
  .hero h1 {
    font-size: 34px;
  }
  .hero-subtitle {
    font-size: 16px;
  }
  .hero-cta {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
  }
  .hero-cta .btn {
    width: 100%;
  }
  .product-grid,
  .partner-grid,
  .advantage-grid,
  .about-facts,
  .form-row {
    grid-template-columns: 1fr;
  }
  .fact-card {
    min-height: 128px;
  }
  .contact-form {
    padding: 26px 20px;
  }
}