:root {
  color-scheme: light;
  --ink: #09202a;
  --muted: #4f6570;
  --paper: #f6fbf8;
  --surface: #ffffff;
  --navy: #062a34;
  --teal: #0d7d80;
  --green: #1f8f63;
  --lime: #b8d977;
  --line: rgba(9, 32, 42, 0.14);
  --shadow: 0 20px 50px rgba(6, 42, 52, 0.14);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
}

img {
  max-width: 100%;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 56px);
  color: #f7fffb;
  transition:
    background 180ms ease,
    box-shadow 180ms ease,
    padding 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(6, 42, 52, 0.94);
  box-shadow: 0 10px 30px rgba(5, 31, 39, 0.24);
  padding-top: 12px;
  padding-bottom: 12px;
  backdrop-filter: blur(14px);
}

.brand,
.header-actions,
.site-nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.13);
  font-size: 0.78rem;
}

.site-nav {
  gap: 22px;
  font-size: 0.94rem;
  color: rgba(255, 255, 255, 0.82);
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-footer a:hover,
.site-footer a:focus-visible {
  color: #ffffff;
}

.header-actions {
  gap: 12px;
}

.stage-badge {
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 999px;
  padding: 7px 12px;
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.78rem;
  font-weight: 700;
  white-space: nowrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0 20px;
  background: var(--lime);
  color: #0f2919;
  font-weight: 800;
  box-shadow: 0 14px 30px rgba(13, 125, 128, 0.2);
  transition:
    transform 160ms ease,
    background 160ms ease,
    border-color 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  background: #c8e98a;
}

.button-secondary {
  border-color: rgba(255, 255, 255, 0.34);
  background: rgba(255, 255, 255, 0.1);
  color: #f8fffb;
  box-shadow: none;
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background: rgba(255, 255, 255, 0.18);
}

.button-small {
  min-height: 38px;
  padding: 0 15px;
  font-size: 0.88rem;
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: #f8fffb;
}

.hero-media,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-media {
  background:
    image-set(url("assets/pond-monitoring-hero.jpg") type("image/jpeg")) center / cover no-repeat,
    #062a34;
  transform: scale(1.02);
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(4, 24, 31, 0.9) 0%, rgba(6, 42, 52, 0.72) 44%, rgba(6, 42, 52, 0.24) 100%),
    linear-gradient(180deg, rgba(4, 24, 31, 0.34), rgba(4, 24, 31, 0.28));
}

.hero-content {
  position: relative;
  width: min(760px, calc(100% - 36px));
  margin-left: clamp(18px, 7vw, 92px);
  padding-top: 86px;
  padding-bottom: 72px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #b8d977;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.06;
  letter-spacing: 0;
}

h1 {
  max-width: 720px;
  font-size: clamp(3rem, 8vw, 6.8rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 4rem);
}

h3 {
  font-size: 1.25rem;
}

.hero-copy {
  max-width: 620px;
  margin: 24px 0 0;
  color: rgba(248, 255, 251, 0.86);
  font-size: clamp(1.08rem, 2vw, 1.35rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.section {
  padding: clamp(72px, 11vw, 132px) clamp(18px, 4vw, 56px);
}

.section-inner {
  width: min(1160px, 100%);
  margin: 0 auto;
}

.split,
.two-column {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(32px, 7vw, 84px);
  align-items: start;
}

.large-copy {
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.2rem, 2.2vw, 1.65rem);
}

.problem-section {
  background: #ffffff;
}

.pilot-section {
  background: #eef8f2;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading p,
.copy-stack p {
  color: var(--muted);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.feature-card {
  min-height: 250px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.feature-icon {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 42px;
  border-radius: 999px;
  background: #e7f4ef;
  color: var(--green);
  font-weight: 900;
  font-size: 0.82rem;
}

.feature-card p,
.audience-section p,
.waitlist-section p,
.partner-section p {
  color: var(--muted);
}

.audience-section {
  background: #ffffff;
}

.check-list,
.question-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li,
.question-list li {
  position: relative;
  padding-left: 34px;
  color: var(--muted);
  font-size: 1.06rem;
}

.check-list li::before,
.question-list li::before {
  position: absolute;
  left: 0;
  top: 0.15em;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  background: #dff1e8;
  color: var(--green);
  font-size: 0.82rem;
  font-weight: 900;
  content: "✓";
}

.stage-section {
  background: var(--navy);
  color: #f7fffb;
}

.stage-section .large-copy {
  color: rgba(247, 255, 251, 0.78);
}

.questions-section {
  background: #f9fcfa;
}

.waitlist-section {
  background: #ffffff;
}

.partner-section {
  background: #eef8f2;
}

.form-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(32px, 7vw, 76px);
  align-items: start;
}

.form-note {
  border-left: 4px solid var(--green);
  padding: 14px 16px;
  background: #eef8f2;
  color: var(--muted);
  font-size: 0.95rem;
}

.form-note code {
  color: var(--ink);
  font-size: 0.92em;
  font-weight: 700;
}

.waitlist-form {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: clamp(18px, 4vw, 30px);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.waitlist-form label {
  display: grid;
  gap: 7px;
  color: var(--ink);
  font-weight: 800;
}

.waitlist-form label span {
  font-size: 0.9rem;
}

.waitlist-form input,
.waitlist-form select,
.waitlist-form textarea {
  width: 100%;
  border: 1px solid rgba(9, 32, 42, 0.18);
  border-radius: 8px;
  padding: 13px 14px;
  background: #fbfefd;
  color: var(--ink);
  font: inherit;
  line-height: 1.3;
}

.hidden-field {
  display: none;
}

.waitlist-form input:focus,
.waitlist-form select:focus,
.waitlist-form textarea:focus {
  outline: 3px solid rgba(31, 143, 99, 0.2);
  border-color: var(--green);
}

.full-field {
  grid-column: 1 / -1;
}

.form-button {
  margin-top: 20px;
  cursor: pointer;
}

.form-button:disabled {
  cursor: wait;
  opacity: 0.68;
  transform: none;
}

.form-status {
  min-height: 1.5em;
  margin: 14px 0 0;
  color: var(--muted);
  font-weight: 800;
}

.form-status.is-success {
  color: var(--green);
}

.form-status.is-warning {
  color: #8b4e00;
}

.contact-section {
  padding: clamp(78px, 12vw, 150px) clamp(18px, 4vw, 56px);
  background:
    linear-gradient(90deg, rgba(6, 42, 52, 0.96), rgba(8, 75, 78, 0.92)),
    url("assets/pond-monitoring-hero.jpg") center / cover no-repeat;
  color: #f7fffb;
}

.contact-inner {
  width: min(900px, 100%);
  margin: 0 auto;
  text-align: center;
}

.contact-section .eyebrow {
  color: #b8d977;
}

.contact-email {
  display: inline-block;
  margin-top: 26px;
  color: #b8d977;
  font-size: clamp(1.25rem, 4vw, 2.8rem);
  font-weight: 900;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 26px clamp(18px, 4vw, 56px);
  background: #03191f;
  color: rgba(247, 255, 251, 0.74);
  font-size: 0.92rem;
}

@media (max-width: 940px) {
  .site-nav {
    display: none;
  }

  .stage-badge {
    display: none;
  }

  .split,
  .two-column,
  .form-layout {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .site-header {
    padding: 14px 16px;
  }

  .brand {
    font-size: 0.96rem;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
  }

  .button-small {
    min-height: 36px;
    padding: 0 12px;
  }

  .hero {
    min-height: 88vh;
  }

  .hero-overlay {
    background:
      linear-gradient(180deg, rgba(4, 24, 31, 0.88) 0%, rgba(6, 42, 52, 0.74) 58%, rgba(6, 42, 52, 0.42) 100%),
      linear-gradient(90deg, rgba(4, 24, 31, 0.58), rgba(4, 24, 31, 0.26));
  }

  .hero-content {
    width: calc(100% - 32px);
    margin: 0 16px;
    padding-top: 104px;
  }

  h1 {
    font-size: clamp(2.6rem, 15vw, 4.5rem);
  }

  .hero-actions,
  .site-footer {
    flex-direction: column;
    align-items: stretch;
  }

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

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

  .feature-card {
    min-height: auto;
  }

  .feature-icon {
    margin-bottom: 28px;
  }

  .contact-inner {
    text-align: left;
  }
}