:root {
  --tb-bg: #f4f7ff;
  --tb-surface: #ffffff;
  --tb-surface-soft: #eef3ff;
  --tb-text: #101828;
  --tb-muted: #4b5565;
  --tb-border: #dbe4ff;
  --tb-primary: #138ea4;
  --tb-primary-strong: #0d6f81;
  --tb-accent: #3ecac1;
  --tb-success: #22c55e;
  --tb-shadow: 0 20px 60px rgba(16, 24, 40, 0.12);
  --tb-radius-lg: 24px;
  --tb-radius-md: 16px;
  --tb-radius-sm: 12px;
  --tb-shell: 1160px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", "Poppins", Arial, sans-serif;
  color: var(--tb-text);
  background:
    radial-gradient(circle at 10% 10%, #e9efff 0%, rgba(233, 239, 255, 0) 26%),
    radial-gradient(circle at 90% 2%, #e0f4ff 0%, rgba(224, 244, 255, 0) 22%),
    var(--tb-bg);
  line-height: 1.6;
}

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

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

.tb-shell {
  width: min(var(--tb-shell), calc(100% - 2.5rem));
  margin-inline: auto;
}

.tb-skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
}

.tb-skip-link:focus {
  left: 16px;
  top: 16px;
  z-index: 9999;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--tb-surface);
  color: var(--tb-text);
  box-shadow: var(--tb-shadow);
}

.tb-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(244, 247, 255, 0.86);
  border-bottom: 1px solid rgba(19, 142, 164, 0.2);
}

.tb-header-inner {
  min-height: 84px;
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.tb-brand img {
  height: 52px;
  width: auto;
}

.tb-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tb-nav a {
  font-size: 0.95rem;
  font-weight: 600;
  color: #2b3648;
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.tb-nav a:hover,
.tb-nav a:focus-visible {
  background: #e4f5f8;
  color: var(--tb-primary-strong);
}

.tb-btn {
  border: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  cursor: pointer;
  font-weight: 700;
  line-height: 1;
  padding: 0.86rem 1.2rem;
  border-radius: 999px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.tb-btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--tb-primary), var(--tb-accent));
  box-shadow: 0 10px 30px rgba(19, 142, 164, 0.34);
}

.tb-btn-primary:hover,
.tb-btn-primary:focus-visible {
  transform: translateY(-1px);
  background: linear-gradient(135deg, var(--tb-primary-strong), var(--tb-primary));
}

.tb-header .tb-btn-primary {
  color: var(--tb-primary-strong);
  background: #ffffff;
  border: 1px solid #bde3ea;
  border-radius: 16px;
  box-shadow: none;
}

.tb-header .tb-btn-primary:hover,
.tb-header .tb-btn-primary:focus-visible {
  transform: none;
  background: #ecfbfe;
  border-color: var(--tb-primary);
  box-shadow: 0 0 0 4px rgba(19, 142, 164, 0.14);
}

.tb-btn-ghost {
  color: var(--tb-primary-strong);
  background: #e8f7fa;
  box-shadow: inset 0 0 0 1px #bde3ea;
}

.tb-btn-ghost:hover,
.tb-btn-ghost:focus-visible {
  background: #d7f0f5;
}

.tb-hero {
  padding: 5rem 0 3rem;
}

.tb-hero-grid {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 2rem;
  align-items: center;
}

.tb-eyebrow {
  display: inline-flex;
  align-items: center;
  color: var(--tb-primary);
  background: #e8f7fa;
  border: 1px solid #bde3ea;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.38rem 0.68rem;
  margin: 0 0 1rem;
}

.tb-hero h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.tb-lead {
  margin: 1rem 0 0;
  max-width: 60ch;
  color: var(--tb-muted);
  font-size: clamp(1rem, 1.6vw, 1.16rem);
}

.tb-hero-actions {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.tb-bullets {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.tb-bullets li {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: #2f3f56;
  font-weight: 500;
}

.tb-bullets i {
  color: var(--tb-success);
}

.tb-hero-media {
  position: relative;
}

.tb-screen-card {
  border-radius: var(--tb-radius-lg);
  border: 1px solid var(--tb-border);
  background: var(--tb-surface);
  box-shadow: var(--tb-shadow);
  padding: 1.1rem;
}

.tb-screen-card img {
  border-radius: calc(var(--tb-radius-lg) - 10px);
}

.tb-floating-note {
  position: absolute;
  right: -8px;
  bottom: -14px;
  max-width: 255px;
  background: #111827;
  color: #e5e7eb;
  border-radius: 14px;
  padding: 0.86rem 0.9rem;
  box-shadow: 0 14px 30px rgba(17, 24, 39, 0.35);
}

.tb-floating-note strong {
  display: block;
  color: #fff;
  margin-bottom: 0.35rem;
  font-size: 0.85rem;
}

.tb-floating-note p {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.45;
}

.tb-metrics {
  padding: 1.2rem 0 1.5rem;
}

.tb-metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.tb-metric-card {
  border: 1px solid var(--tb-border);
  border-radius: var(--tb-radius-md);
  background: var(--tb-surface);
  padding: 1.2rem 1.1rem;
  box-shadow: 0 10px 24px rgba(19, 142, 164, 0.12);
}

.tb-metric-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.08rem;
}

.tb-metric-card p {
  margin: 0;
  color: var(--tb-muted);
  font-size: 0.95rem;
}

.tb-section {
  padding: 4.6rem 0;
}

.tb-section-soft {
  background: linear-gradient(180deg, #f5fbfc 0%, #e8f6f9 100%);
  border-top: 1px solid #d3e9ee;
  border-bottom: 1px solid #d3e9ee;
}

.tb-section-head {
  max-width: 760px;
  margin: 0 auto 2rem;
  text-align: center;
}

.tb-section-head h2 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.tb-section-head p {
  margin: 0.7rem 0 0;
  color: var(--tb-muted);
}

.tb-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.tb-feature-card {
  border-radius: var(--tb-radius-md);
  border: 1px solid var(--tb-border);
  background: var(--tb-surface);
  box-shadow: 0 12px 28px rgba(19, 142, 164, 0.14);
  padding: 1.4rem 1.2rem;
}

.tb-feature-card img {
  width: 52px;
  height: 52px;
  margin-bottom: 0.8rem;
}

.tb-feature-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
}

.tb-feature-card p {
  margin: 0;
  color: var(--tb-muted);
}

.tb-steps-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
}

.tb-step-card {
  border: 1px solid #cfe6eb;
  border-radius: var(--tb-radius-md);
  background: linear-gradient(180deg, #ffffff 0%, #f1fafc 100%);
  padding: 1rem;
}

.tb-step-card span {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: #dbf1f5;
  color: var(--tb-primary-strong);
  font-weight: 800;
  font-size: 0.86rem;
  margin-bottom: 0.8rem;
}

.tb-step-card h4 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
}

.tb-step-card p {
  margin: 0;
  color: var(--tb-muted);
  font-size: 0.9rem;
}

.tb-about-card {
  border: 1px solid var(--tb-border);
  border-radius: var(--tb-radius-lg);
  background: linear-gradient(135deg, #ffffff 0%, #f3f8ff 100%);
  padding: clamp(1.2rem, 4vw, 2.2rem);
  box-shadow: 0 14px 28px rgba(19, 142, 164, 0.14);
}

.tb-about-card h2 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  line-height: 1.15;
}

.tb-about-card p {
  margin: 0.8rem 0 0;
  color: var(--tb-muted);
}

.tb-contact-layout {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 1.2rem;
  align-items: start;
}

.tb-contact-copy h2 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  line-height: 1.15;
}

.tb-contact-copy p {
  margin: 0.75rem 0 0;
  color: var(--tb-muted);
  max-width: 55ch;
}

.tb-contact-form {
  border: 1px solid var(--tb-border);
  border-radius: var(--tb-radius-md);
  background: var(--tb-surface);
  box-shadow: 0 10px 26px rgba(19, 142, 164, 0.12);
  padding: 1.2rem;
}

.tb-contact-form label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: #344054;
}

.tb-contact-form input,
.tb-contact-form textarea {
  width: 100%;
  border: 1px solid #bde3ea;
  border-radius: 10px;
  background: #fbfdff;
  color: #0f172a;
  font: inherit;
  padding: 0.72rem 0.78rem;
  margin-bottom: 0.95rem;
  outline: 0;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.tb-contact-form textarea {
  resize: vertical;
  min-height: 150px;
}

.tb-contact-form input:focus,
.tb-contact-form textarea:focus {
  border-color: var(--tb-primary);
  box-shadow: 0 0 0 4px rgba(19, 142, 164, 0.16);
}

.tb-form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

.tb-footer {
  color: #e5e7eb;
  background: linear-gradient(135deg, #0b2f3a 0%, #0f5362 100%);
  padding: 3rem 0 1.5rem;
}

.tb-footer-inner {
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  align-items: flex-start;
  border-bottom: 1px solid rgba(229, 231, 235, 0.2);
  padding-bottom: 1.1rem;
}

.tb-footer-brand img {
  height: 38px;
  width: auto;
  margin-bottom: 0.5rem;
}

.tb-footer-brand p {
  margin: 0;
  max-width: 60ch;
  color: #c9d1dd;
}

.tb-footer-social {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.tb-footer-social a {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.24);
  color: #fff;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.tb-footer-social a:hover,
.tb-footer-social a:focus-visible {
  transform: translateY(-1px);
  background: var(--tb-primary);
}

.tb-footer-bottom {
  padding-top: 0.9rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.tb-footer-bottom p {
  margin: 0;
  color: #d1d5db;
  font-size: 0.87rem;
}

.tb-footer-legal {
  margin-left: auto;
  text-align: right;
}

.tb-floating-contact {
  position: fixed;
  right: 18px;
  bottom: 86px;
  z-index: 45;
}

.tb-floating-contact a {
  min-height: 54px;
  padding: 0 8px 0 14px;
  border-radius: 999px;
  background: #22c55e;
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 12px 26px rgba(34, 197, 94, 0.34);
  transition: transform 0.2s ease, filter 0.2s ease;
}

.tb-floating-contact a:hover,
.tb-floating-contact a:focus-visible {
  transform: translateY(-2px);
  filter: brightness(0.96);
}

.tb-floating-contact span {
  font-size: 0.83rem;
  font-weight: 700;
}

.tb-floating-contact i {
  width: 38px;
  height: 38px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: #16a34a;
  font-size: 1.3rem;
}

:focus-visible {
  outline: 3px solid rgba(14, 165, 233, 0.5);
  outline-offset: 2px;
}

@media (max-width: 1024px) {
  .tb-header-inner {
    min-height: 76px;
  }

  .tb-nav {
    gap: 0.2rem;
  }

  .tb-hero-grid,
  .tb-contact-layout {
    grid-template-columns: 1fr;
  }

  .tb-hero-media {
    max-width: 740px;
    margin: 0 auto;
  }

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

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

  .tb-metrics-grid {
    grid-template-columns: 1fr;
  }

  .tb-footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 760px) {
  .tb-shell {
    width: min(var(--tb-shell), calc(100% - 1.5rem));
  }

  .tb-header-inner {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.7rem 0;
  }

  .tb-nav {
    order: 3;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }

  .tb-nav a {
    font-size: 0.86rem;
    padding: 0.45rem 0.7rem;
  }

  .tb-hero {
    padding-top: 2rem;
  }

  .tb-floating-note {
    position: static;
    max-width: none;
    margin-top: 0.7rem;
  }

  .tb-feature-grid,
  .tb-steps-grid,
  .tb-form-row {
    grid-template-columns: 1fr;
  }

  .tb-section {
    padding: 3.6rem 0;
  }

  .tb-footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .tb-footer-legal {
    margin-left: 0;
    text-align: left;
  }

  .tb-floating-contact {
    right: 12px;
    bottom: 84px;
  }

  .tb-floating-contact a {
    min-height: 48px;
    padding: 0 6px 0 11px;
    gap: 8px;
  }

  .tb-floating-contact span {
    font-size: 0.74rem;
  }

  .tb-floating-contact i {
    width: 34px;
    height: 34px;
    font-size: 1.05rem;
  }
}