:root {
  --bg: #f4f8fc;
  --navy: #102033;
  --text: #172033;
  --muted: #607086;
  --white: #ffffff;

  --blue: #008fd3;
  --cyan: #00c8f0;
  --purple: #7357d8;
  --orange: #f57c20;
  --green: #19b983;
  --pink: #e84ab8;

  --section-blue: #e8f6ff;
  --section-orange: #fff3e5;
  --section-green: #eafaf3;
  --section-purple: #f1edff;

  --border: rgba(16, 32, 51, 0.13);
  --radius: 20px;
  --max-width: 1120px;
  --shadow: 0 18px 42px rgba(16, 32, 51, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

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

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

/* HEADER */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 900;
}

.logo-mark {
  color: white;
  background: linear-gradient(135deg, var(--blue), var(--green));
  padding: 7px 10px;
  border-radius: 999px;
}

.logo-text {
  color: var(--navy);
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.nav a:hover {
  color: var(--blue);
}

.nav-button {
  color: white !important;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  padding: 9px 15px;
  border-radius: 999px;
  box-shadow: 0 10px 24px rgba(0, 143, 211, 0.25);
}

/* HERO */

.hero {
  position: relative;
  overflow: hidden;
  padding: 78px 22px 64px;
  background:
    radial-gradient(circle at 12% 12%, rgba(0, 200, 240, 0.32), transparent 30%),
    radial-gradient(circle at 88% 16%, rgba(115, 87, 216, 0.25), transparent 34%),
    linear-gradient(135deg, #ffffff 0%, #dff4ff 48%, #ebe6ff 100%);
  border-bottom: 8px solid transparent;
  border-image: linear-gradient(90deg, var(--blue), var(--green), var(--orange), var(--purple)) 1;
}

.hero-content {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 42px;
  align-items: center;
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(32px, 4vw, 50px);
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: var(--navy);
}

.hero-subtitle {
  max-width: 590px;
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.65;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 12px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 900;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  color: white;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  box-shadow: 0 14px 34px rgba(0, 143, 211, 0.25);
}

.button.secondary {
  color: var(--navy);
  background: white;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 13px;
  max-width: 620px;
}

.hero-stats div {
  padding: 14px;
  border-radius: 18px;
  background: white;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.hero-stats strong {
  display: block;
  margin-bottom: 5px;
  font-size: 16px;
  color: var(--navy);
}

.hero-stats span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.hero-image-wrap {
  position: relative;
  min-height: 330px;
  display: grid;
  place-items: center;
}

.fish-ring {
  position: absolute;
  width: min(340px, 80vw);
  height: min(340px, 80vw);
  border-radius: 50%;
  background: conic-gradient(from 180deg, var(--blue), var(--green), var(--orange), var(--purple), var(--blue));
  opacity: 0.22;
}

.hero-fish {
  position: relative;
  width: min(300px, 72vw);
  border-radius: 28px;
  box-shadow: 0 24px 60px rgba(16, 32, 51, 0.25);
}

/* SECTIONS */

.section {
  position: relative;
  padding: 74px 22px;
  border-bottom: 1px solid rgba(16, 32, 51, 0.08);
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 38px;
  text-align: center;
}

.section-heading h2 {
  margin: 0 0 12px;
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.1;
  letter-spacing: -0.035em;
  color: var(--navy);
}

.section-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.65;
}

/* CLEAR SECTION DIFFERENTIATION */

#why {
  background:
    linear-gradient(135deg, var(--section-blue) 0%, #ffffff 100%);
}

#services {
  background:
    linear-gradient(135deg, var(--section-orange) 0%, #ffffff 55%, #fff8ef 100%);
}

#impact {
  background:
    linear-gradient(135deg, var(--section-green) 0%, #ffffff 48%, var(--section-purple) 100%);
}

#contact {
  background:
    linear-gradient(135deg, #dff5ff 0%, #ffffff 50%, #ffeaf8 100%);
}

/* CARDS */

.cards {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  gap: 18px;
}

.cards.four {
  grid-template-columns: repeat(4, 1fr);
}

.card,
.service-card,
.impact-card,
.contact-form {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card {
  min-height: 170px;
  padding: 22px 20px 20px;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 8px;
}

.color-blue::before {
  background: var(--blue);
}

.color-purple::before {
  background: var(--purple);
}

.color-orange::before {
  background: var(--orange);
}

.color-green::before {
  background: var(--green);
}

.card h3 {
  margin: 10px 0 10px;
  font-size: 19px;
  color: var(--navy);
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

/* SERVICES */

.service-list {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}

.service-card {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 18px;
  padding: 20px;
  transition: transform 0.2s ease;
}

.service-card:hover {
  transform: translateY(-3px);
}

.service-number {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  color: white;
  font-weight: 900;
  background: linear-gradient(135deg, var(--orange), var(--blue), var(--green));
}

.service-card h3 {
  margin: 0 0 7px;
  font-size: 21px;
  color: var(--navy);
}

.service-card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
}

/* IMPACT */

.impact-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.impact-card {
  padding: 20px;
  min-height: 160px;
  transition: transform 0.2s ease;
}

.impact-card:hover {
  transform: translateY(-3px);
}

.impact-card h3 {
  margin: 0 0 9px;
  color: var(--blue);
  font-size: 19px;
}

.impact-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.impact-card.highlight {
  grid-column: span 2;
  color: white;
  background: linear-gradient(135deg, var(--blue), var(--purple));
}

.impact-card.highlight h3,
.impact-card.highlight p {
  color: white;
}

.impact-card.highlight h3 {
  font-size: 24px;
}

/* CONTACT */

.contact-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 34px;
  align-items: start;
}

.contact-grid h2 {
  margin: 0 0 12px;
  font-size: clamp(28px, 3.5vw, 42px);
  line-height: 1.05;
  letter-spacing: -0.035em;
  color: var(--navy);
}

.contact-grid p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.65;
}

.contact-form {
  padding: 24px;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  margin-bottom: 12px;
  padding: 13px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #f8fbff;
  color: var(--text);
  font: inherit;
  outline: none;
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(0, 143, 211, 0.14);
}

/* FOOTER */

.site-footer {
  padding: 28px 22px;
  text-align: center;
  color: white;
  background: var(--navy);
  font-size: 13px;
}

/* MOBILE */

@media (max-width: 980px) {
  .nav {
    display: none;
  }

  .hero {
    padding-top: 56px;
  }

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

  .hero-text {
    text-align: center;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-stats {
    margin: 0 auto;
  }

  .cards.four,
  .impact-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .impact-card.highlight {
    grid-column: span 2;
  }

  .hero-image-wrap {
    min-height: 280px;
  }

  .hero-fish {
    width: min(260px, 70vw);
  }

  .fish-ring {
    width: min(280px, 78vw);
    height: min(280px, 78vw);
  }
}

@media (max-width: 640px) {
  .header-inner {
    justify-content: center;
  }

  .hero {
    padding: 44px 18px;
  }

  .hero h1 {
    font-size: 34px;
  }

  .hero-stats,
  .cards.four,
  .impact-grid {
    grid-template-columns: 1fr;
  }

  .impact-card.highlight {
    grid-column: span 1;
  }

  .section {
    padding: 54px 18px;
  }

  .service-card {
    grid-template-columns: 1fr;
  }
}