/* =============================
   RESET & BASE
   ============================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --blue-600: #0057FF;
  --blue-700: #0046CC;
  --blue-50:  #EEF3FF;
  --green-600: #16A34A;
  --green-50:  #F0FDF4;
  --gray-900: #0F172A;
  --gray-700: #334155;
  --gray-500: #64748B;
  --gray-300: #CBD5E1;
  --gray-100: #F1F5F9;
  --gray-50:  #F8FAFC;
  --white:    #FFFFFF;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow-md: 0 4px 16px rgba(0,0,0,.10);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.12);

  --font: 'Inter', system-ui, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

ul { list-style: none; }

/* =============================
   LAYOUT
   ============================= */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* =============================
   BUTTONS
   ============================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all .2s ease;
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn--primary {
  background: var(--blue-600);
  color: var(--white);
  border-color: var(--blue-600);
}
.btn--primary:hover {
  background: var(--blue-700);
  border-color: var(--blue-700);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0,87,255,.3);
}

.btn--secondary {
  background: var(--white);
  color: var(--blue-600);
  border-color: var(--blue-600);
}
.btn--secondary:hover {
  background: var(--blue-50);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.4);
}
.btn--ghost:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.7);
}

.btn--lg {
  padding: 16px 32px;
  font-size: 16px;
  border-radius: var(--radius-md);
}

.btn--full { width: 100%; }

/* =============================
   NAVBAR
   ============================= */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: background .3s, box-shadow .3s, padding .3s;
}

.navbar.scrolled {
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  padding: 10px 0;
}

.navbar__inner {
  display: flex;
  align-items: center;
  gap: 32px;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--white);
  transition: color .3s;
}

.navbar.scrolled .navbar__logo { color: var(--gray-900); }

.navbar__links {
  display: flex;
  gap: 28px;
  margin-left: auto;
}

.navbar__links a {
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,.85);
  transition: color .2s;
}
.navbar__links a:hover { color: var(--white); }

.navbar.scrolled .navbar__links a { color: var(--gray-700); }
.navbar.scrolled .navbar__links a:hover { color: var(--blue-600); }

.navbar__cta {
  margin-left: 8px;
}

.navbar.scrolled .btn--primary {
  background: var(--blue-600);
  color: var(--white);
}

.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.navbar__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: background .3s;
}
.navbar.scrolled .navbar__hamburger span { background: var(--gray-900); }

/* =============================
   HERO
   ============================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #0A0F2E 0%, #0D2160 50%, #0A3080 100%);
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 70% 50%, rgba(0,87,255,.25) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 20% 80%, rgba(0,200,150,.1) 0%, transparent 60%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  color: rgba(255,255,255,.9);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 28px;
  letter-spacing: .03em;
  text-transform: uppercase;
}

.hero__title {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 24px;
  letter-spacing: -.02em;
}

.gradient-text {
  background: linear-gradient(135deg, #60A5FA 0%, #34D399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 18px;
  color: rgba(255,255,255,.75);
  margin-bottom: 40px;
  max-width: 580px;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero__trust {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  color: rgba(255,255,255,.55);
  font-size: 13px;
}

.trust-badge {
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.15);
  color: rgba(255,255,255,.8);
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .05em;
}

/* =============================
   STATS
   ============================= */
.stats {
  background: var(--white);
  border-bottom: 1px solid var(--gray-100);
  padding: 56px 0;
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat__number {
  display: block;
  font-size: 36px;
  font-weight: 800;
  color: var(--blue-600);
  letter-spacing: -.02em;
  line-height: 1;
  margin-bottom: 8px;
}

.stat__label {
  font-size: 14px;
  color: var(--gray-500);
  font-weight: 500;
}

/* =============================
   SECTION COMMON
   ============================= */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}

.section-tag {
  display: inline-block;
  background: var(--blue-50);
  color: var(--blue-600);
  font-size: 13px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.section-tag--green {
  background: var(--green-50);
  color: var(--green-600);
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--gray-900);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 17px;
  color: var(--gray-500);
  line-height: 1.7;
}

/* =============================
   SOLUTIONS
   ============================= */
.solutions {
  padding: 100px 0;
  background: var(--gray-50);
}

.solutions__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.solution-card {
  background: var(--white);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-lg);
  padding: 40px;
  transition: box-shadow .3s, transform .3s;
}

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

.solution-card--featured {
  border-color: var(--blue-600);
  box-shadow: 0 0 0 1px var(--blue-600), var(--shadow-md);
}

.solution-card__icon { margin-bottom: 20px; }

.solution-card__tag {
  display: inline-block;
  background: var(--blue-50);
  color: var(--blue-600);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 16px;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.solution-card__tag--green {
  background: var(--green-50);
  color: var(--green-600);
}

.solution-card h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -.01em;
}

.solution-card p {
  color: var(--gray-500);
  font-size: 15px;
  margin-bottom: 24px;
  line-height: 1.7;
}

.feature-list {
  margin-bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--gray-700);
}

.feature-list li::before {
  content: "";
  display: block;
  width: 18px;
  height: 18px;
  min-width: 18px;
  background: var(--blue-50) url("data:image/svg+xml,%3Csvg width='10' height='8' viewBox='0 0 10 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 4L3.5 6.5L9 1' stroke='%230057FF' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/10px no-repeat;
  border-radius: 50%;
}

/* =============================
   PRODUCT FEATURES
   ============================= */
.product {
  padding: 100px 0;
}

.product__features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px 64px;
}

.product__feature {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.feature-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  background: var(--blue-50);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.product__feature h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--gray-900);
}

.product__feature p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.6;
}

/* =============================
   API SECTION
   ============================= */
.api-section {
  padding: 100px 0;
  background: var(--gray-900);
}

.api-section__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.api-section__content .section-title { color: var(--white); }
.api-section__content p {
  color: rgba(255,255,255,.65);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 28px;
}

.api-features {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 36px;
}

.api-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: rgba(255,255,255,.8);
}

.code-block {
  background: #0D1117;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-md);
  overflow: hidden;
  font-size: 13.5px;
}

.code-block__header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(255,255,255,.04);
  border-bottom: 1px solid rgba(255,255,255,.06);
}

.code-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.code-dot--red    { background: #FF5F57; }
.code-dot--yellow { background: #FFBD2E; }
.code-dot--green  { background: #28CA41; }

.code-block__title {
  font-size: 12px;
  color: rgba(255,255,255,.4);
  font-family: monospace;
  margin-left: 4px;
}

.code-block pre {
  padding: 24px;
  overflow-x: auto;
  font-family: 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  line-height: 1.8;
  color: #E6EDF3;
}

.code-block code { display: block; }
.code-comment { color: #6A737D; }
.code-keyword  { color: #FF7B72; }
.code-string   { color: #A5D6FF; }
.code-number   { color: #79C0FF; }

/* =============================
   COMPLIANCE
   ============================= */
.compliance {
  padding: 100px 0;
  background: var(--white);
}

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

.compliance-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: box-shadow .3s;
}

.compliance-card:hover { box-shadow: var(--shadow-md); }

.compliance-card__icon {
  font-size: 40px;
  margin-bottom: 16px;
  display: block;
}

.compliance-card h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--gray-900);
}

.compliance-card p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.6;
}

/* =============================
   CONTACT
   ============================= */
.contact {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--blue-50) 100%);
}

.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 72px;
  align-items: start;
}

.contact__content h2 {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.02em;
  margin-bottom: 16px;
}

.contact__content p {
  color: var(--gray-500);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 32px;
}

.contact__info-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 500;
  color: var(--blue-600);
}

.contact__form {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-100);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}

.form-group:last-child { margin-bottom: 0; }

.form-group label {
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 15px;
  color: var(--gray-900);
  background: var(--white);
  transition: border-color .2s, box-shadow .2s;
  outline: none;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--gray-300); }

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue-600);
  box-shadow: 0 0 0 3px rgba(0,87,255,.12);
}

.form-group--checkbox { flex-direction: row; align-items: flex-start; gap: 10px; }

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--gray-500);
  cursor: pointer;
  line-height: 1.5;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  min-width: 18px;
  margin-top: 1px;
  cursor: pointer;
  accent-color: var(--blue-600);
}

.link { color: var(--blue-600); text-decoration: underline; }

.form-success {
  display: none;
  background: var(--green-50);
  border: 1px solid #BBF7D0;
  color: var(--green-600);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
  font-weight: 500;
  font-size: 15px;
  margin-top: 16px;
}

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

/* =============================
   FOOTER
   ============================= */
.footer {
  background: var(--gray-900);
  color: rgba(255,255,255,.6);
  padding: 72px 0 0;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 64px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.footer__brand .navbar__logo {
  color: var(--white);
  margin-bottom: 16px;
}

.footer__brand p {
  font-size: 14px;
  line-height: 1.7;
  max-width: 300px;
}

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

.footer__col h5 {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: rgba(255,255,255,.4);
  margin-bottom: 16px;
}

.footer__col a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,.65);
  margin-bottom: 10px;
  transition: color .2s;
}

.footer__col a:hover { color: var(--white); }

.footer__bottom {
  padding: 20px 0;
  font-size: 13px;
  text-align: center;
  color: rgba(255,255,255,.3);
}

/* =============================
   ANIMATIONS
   ============================= */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .5s ease, transform .5s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =============================
   RESPONSIVE
   ============================= */
@media (max-width: 1024px) {
  .compliance__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .navbar__links,
  .navbar__cta { display: none; }

  .navbar__links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--white);
    padding: 24px;
    gap: 16px;
    box-shadow: var(--shadow-md);
    z-index: 99;
  }

  .navbar__links.open a { color: var(--gray-700); font-size: 16px; }
  .navbar__hamburger { display: flex; }

  .stats__grid { grid-template-columns: 1fr 1fr; gap: 24px; }

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

  .product__features { grid-template-columns: 1fr; gap: 28px; }

  .api-section__inner { grid-template-columns: 1fr; gap: 48px; }

  .contact__inner { grid-template-columns: 1fr; gap: 40px; }

  .footer__inner { grid-template-columns: 1fr; gap: 40px; }

  .footer__links { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 640px) {
  .hero { padding: 100px 0 60px; }

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

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

  .form-row { grid-template-columns: 1fr; }

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

  .solutions { padding: 64px 0; }
  .product { padding: 64px 0; }
  .api-section { padding: 64px 0; }
  .compliance { padding: 64px 0; }
  .contact { padding: 64px 0; }

  .contact__form { padding: 24px; }
  .solution-card { padding: 28px; }

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