*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --navy: #0b1f3a;
  --navy-mid: #112848;
  --teal: #0d7377;
  --teal-light: #14a085;
  --teal-pale: #e8f5f4;
  --slate: #4a5e74;
  --muted: #7a8fa6;
  --line: #d6e4ec;
  --white: #ffffff;
  --off-white: #f5f9fa;
  --text: #1a2e42;

  --font-display: "Instrument Serif", Georgia, serif;
  --font-body: "DM Sans", sans-serif;

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;

  --shadow-sm: 0 1px 4px rgba(11, 31, 58, 0.06),
    0 2px 10px rgba(11, 31, 58, 0.04);
  --shadow: 0 4px 20px rgba(11, 31, 58, 0.08), 0 1px 6px rgba(11, 31, 58, 0.04);
  --shadow-lg: 0 12px 48px rgba(11, 31, 58, 0.12),
    0 4px 16px rgba(11, 31, 58, 0.06);
}

html {
  scroll-behavior: smooth;
}

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

/* ── NAV ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  padding: 0 2rem;
}
.nav-inner {
  max-width: 1160px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--navy);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.01em;
}
.nav-brand img {
  height: 34px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  text-decoration: none;
  color: var(--slate);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--teal);
}
.btn-nav {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--teal);
  color: var(--white);
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition:
    background 0.2s,
    transform 0.15s;
}
.btn-nav:hover {
  background: var(--teal-light);
  transform: translateY(-1px);
  color: #fff;
}

/* ── HERO ── */
.hero {
  background: var(--navy);
  padding: 7rem 2rem 6rem;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
      ellipse 70% 60% at 80% 40%,
      rgba(13, 115, 119, 0.35) 0%,
      transparent 65%
    ),
    radial-gradient(
      ellipse 40% 50% at 10% 80%,
      rgba(13, 115, 119, 0.15) 0%,
      transparent 60%
    );
}
.hero-inner {
  max-width: 1160px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
  position: relative;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(13, 115, 119, 0.2);
  border: 1px solid rgba(13, 115, 119, 0.4);
  color: #7fd8da;
  padding: 0.3rem 0.85rem;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 1.4rem;
}
.hero-eyebrow span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal-light);
  display: block;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 4.5vw, 3.4rem);
  color: var(--white);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.3rem;
  font-weight: 400;
}
.hero h1 em {
  font-style: italic;
  color: #7fd8da;
}
.hero p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 1.05rem;
  line-height: 1.7;
  max-width: 440px;
  margin-bottom: 2.4rem;
  font-weight: 300;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.btn-primary-hero {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--teal-light);
  color: var(--white);
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition:
    background 0.2s,
    transform 0.15s,
    box-shadow 0.2s;
  box-shadow: 0 4px 20px rgba(20, 160, 133, 0.3);
}
.btn-primary-hero:hover {
  background: #17b899;
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(20, 160, 133, 0.4);
  color: #fff;
}
.btn-ghost-hero {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: rgba(255, 255, 255, 0.75);
  padding: 0.8rem 1.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition:
    background 0.2s,
    color 0.2s,
    border-color 0.2s;
}
.btn-ghost-hero:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}

/* hero card */
.hero-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 2.4rem;
  backdrop-filter: blur(8px);
}
.tembo-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(13, 115, 119, 0.25);
  border: 1px solid rgba(13, 115, 119, 0.4);
  color: #7fd8da;
  padding: 0.4rem 0.9rem;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 1.6rem;
}
.hero-card h3 {
  font-family: var(--font-display);
  font-size: 1.55rem;
  color: var(--white);
  margin-bottom: 0.7rem;
  font-weight: 400;
  line-height: 1.3;
}
.hero-card p {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}
.hero-card-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.stat-cell {
  background: rgba(255, 255, 255, 0.04);
  padding: 1.1rem 1.2rem;
}
.stat-cell .val {
  font-size: 1.6rem;
  font-weight: 700;
  color: #7fd8da;
  font-family: var(--font-display);
  display: block;
}
.stat-cell .lbl {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.45);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

/* ── SECTION BASE ── */
section {
  padding: 5.5rem 2rem;
}
.container {
  max-width: 1160px;
  margin: 0 auto;
}
.section-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.7rem;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  color: var(--navy);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
.section-sub {
  font-size: 1rem;
  color: var(--muted);
  max-width: 500px;
  line-height: 1.7;
  font-weight: 300;
}
.section-header {
  margin-bottom: 3.5rem;
}

/* ── FEATURES ── */
.features {
  background: var(--off-white);
}
.features-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 2rem;
  margin-bottom: 3rem;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  background: var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}
.feature-cell {
  background: var(--white);
  padding: 2.2rem 2rem;
  transition: background 0.2s;
  position: relative;
}
.feature-cell:hover {
  background: var(--teal-pale);
}
.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--teal-pale);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.2rem;
  transition: background 0.2s;
}
.feature-cell:hover .feature-icon {
  background: rgba(13, 115, 119, 0.12);
}
.feature-icon i {
  color: var(--teal);
  font-size: 1.15rem;
}
.feature-cell h3 {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}
.feature-cell p {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.65;
  font-weight: 300;
}

/* ── ABOUT ── */
.about {
  background: var(--white);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: center;
}
.about-text .section-sub {
  max-width: 100%;
  margin-bottom: 1.4rem;
}
.about-text p + p {
  margin-top: 1rem;
}
.divider {
  width: 40px;
  height: 3px;
  background: var(--teal);
  border-radius: 2px;
  margin: 1.6rem 0;
}
.about-pillars {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 2rem;
}
.pillar {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.9rem 1.1rem;
  background: var(--off-white);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--teal);
}
.pillar i {
  color: var(--teal);
  font-size: 1rem;
  flex-shrink: 0;
}
.pillar span {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--navy);
}

.about-visual {
  background: var(--navy);
  border-radius: var(--radius-lg);
  padding: 2.8rem 2.4rem;
  position: relative;
  overflow: hidden;
}
.about-visual::before {
  content: "";
  position: absolute;
  top: -40px;
  right: -40px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(13, 115, 119, 0.4), transparent 60%);
  border-radius: 50%;
}
.about-visual .av-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 2rem;
}
.about-visual h3 {
  font-family: var(--font-display);
  font-size: 1.7rem;
  color: var(--white);
  line-height: 1.3;
  font-weight: 400;
  margin-bottom: 1rem;
}
.about-visual p {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.9rem;
  line-height: 1.7;
  font-weight: 300;
  margin-bottom: 2.4rem;
}
.av-metrics {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.av-metric {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.07);
}
.av-metric .m-label {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 400;
}
.av-metric .m-val {
  font-size: 0.88rem;
  font-weight: 600;
  color: #7fd8da;
}

/* ── CONTACT ── */
.contact {
  background: var(--off-white);
}
.contact-grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 4rem;
  align-items: start;
}
.contact-info .section-sub {
  margin-bottom: 2.2rem;
}
.contact-items {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 1.2rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}
.contact-item i {
  color: var(--teal);
  font-size: 1rem;
  flex-shrink: 0;
}
.contact-item span {
  font-size: 0.9rem;
  color: var(--slate);
  font-weight: 400;
}
.contact-form-wrap {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 2.6rem;
  box-shadow: var(--shadow);
}
.contact-form-wrap h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--navy);
  font-weight: 400;
  margin-bottom: 0.4rem;
}
.form-note {
  font-size: 0.87rem;
  color: var(--muted);
  margin-bottom: 2rem;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.form-group {
  margin-bottom: 1.2rem;
}
.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--navy);
  letter-spacing: 0.02em;
  margin-bottom: 0.45rem;
}
.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--off-white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.7rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text);
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
  outline: none;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(13, 115, 119, 0.1);
}
.newsletter-row {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 1rem 1.1rem;
  background: var(--teal-pale);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(13, 115, 119, 0.15);
  margin-bottom: 1.4rem;
}
.newsletter-row input[type="checkbox"] {
  margin-top: 2px;
  accent-color: var(--teal);
  flex-shrink: 0;
}
.newsletter-row label {
  font-size: 0.85rem;
  color: var(--slate);
  cursor: pointer;
}
.newsletter-row label strong {
  color: var(--teal);
}
.btn-submit {
  width: 100%;
  padding: 0.85rem;
  background: var(--teal);
  color: var(--white);
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition:
    background 0.2s,
    transform 0.15s,
    box-shadow 0.2s;
  box-shadow: 0 4px 16px rgba(13, 115, 119, 0.25);
}
.btn-submit:hover {
  background: var(--teal-light);
  transform: translateY(-1px);
  box-shadow: 0 6px 22px rgba(13, 115, 119, 0.35);
}

/* ── FOOTER ── */
.footer {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.55);
  padding: 4rem 2rem 2.5rem;
}
.footer-inner {
  max-width: 1160px;
  margin: 0 auto;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 4rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand {
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.7rem;
}
.footer-tagline {
  font-size: 0.875rem;
  line-height: 1.65;
  font-weight: 300;
  max-width: 260px;
}
.footer-col h4 {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.35);
  margin-bottom: 1.1rem;
}
.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer-col ul a {
  text-decoration: none;
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.875rem;
  transition: color 0.2s;
}
.footer-col ul a:hover {
  color: #7fd8da;
}
.social-row {
  display: flex;
  gap: 0.7rem;
  margin-top: 0.2rem;
}
.social-row a {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.9rem;
  text-decoration: none;
  transition:
    background 0.2s,
    color 0.2s,
    border-color 0.2s;
}
.social-row a:hover {
  background: rgba(13, 115, 119, 0.3);
  color: #7fd8da;
  border-color: rgba(13, 115, 119, 0.5);
}
.footer-bottom {
  padding-top: 1.8rem;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.3);
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .hero-inner,
  .about-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .features-grid {
    grid-template-columns: 1fr 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .hero-card {
    display: none;
  }
}
@media (max-width: 600px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .nav-links {
    display: none;
  }
  section {
    padding: 4rem 1.2rem;
  }
  .hero {
    padding: 5rem 1.2rem 4rem;
  }
}

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.hero-content > * {
  opacity: 0;
  animation: fadeUp 0.7s ease forwards;
}
.hero-content > *:nth-child(1) {
  animation-delay: 0.05s;
}
.hero-content > *:nth-child(2) {
  animation-delay: 0.15s;
}
.hero-content > *:nth-child(3) {
  animation-delay: 0.25s;
}
.hero-content > *:nth-child(4) {
  animation-delay: 0.35s;
}
.hero-card-anim {
  opacity: 0;
  animation: fadeUp 0.8s 0.4s ease forwards;
}