:root {
  --bg: #f4f7f4;
  --surface: #ffffff;
  --ink: #12221a;
  --muted: #5b6a61;
  --line: #d8e4dc;
  --soft: #e8f1ea;
  --accent: #25b47c;
  --accent-dark: #0c6f4d;
  --radius: 18px;
  --shadow: 0 24px 70px rgb(18 34 26 / 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Aptos", "Segoe UI", Arial, sans-serif;
}

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

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

main {
  overflow: hidden;
}

.nav-shell {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 28px;
  min-height: 72px;
  padding: 14px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid rgb(216 228 220 / 0.82);
  background: rgb(244 247 244 / 0.92);
  backdrop-filter: blur(18px);
}

.brand,
.nav-cta,
.button,
.send-options article,
.support-stack article {
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 760;
}

.brand-mark,
.process-step span {
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  background: var(--accent);
  color: white;
}

.brand-mark {
  width: 38px;
  height: 38px;
}

.nav-links {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-size: 15px;
}

.nav-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  border-radius: var(--radius);
  font-weight: 720;
  white-space: nowrap;
}

.nav-cta {
  padding: 0 18px;
  background: var(--ink);
  color: white;
}

.button {
  padding: 0 20px;
}

.button.primary {
  background: var(--accent);
  color: white;
}

.button.secondary {
  border: 1px solid var(--line);
  background: white;
  color: var(--ink);
}

.brand:active,
.nav-cta:active,
.button:active,
.send-options article:active,
.support-stack article:active {
  transform: translateY(1px);
}

.section {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: 90px 0;
}

.compact {
  padding: 40px 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: clamp(34px, 6vw, 80px);
  align-items: center;
  min-height: calc(100dvh - 72px);
  padding-top: 38px;
}

.hero-copy h1,
.section-heading h2,
.screen-copy h2,
.send-panel h2,
.offline-copy h2,
.setup-title h2,
.support-copy h2,
.final-cta h2 {
  margin: 0;
  letter-spacing: 0;
  line-height: 0.98;
}

.hero-copy h1 {
  max-width: 720px;
  font-size: clamp(48px, 7vw, 86px);
}

.hero-subtext {
  max-width: 560px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 820;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-visual {
  position: relative;
  min-height: 620px;
  transform-style: preserve-3d;
}

.hero-photo,
.send-image,
.offline-map img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius);
}

.hero-photo {
  min-height: 620px;
  box-shadow: var(--shadow);
}

.phone-card {
  position: absolute;
  right: 8%;
  bottom: -34px;
  width: min(280px, 44%);
  padding: 12px;
  border: 1px solid rgb(255 255 255 / 0.7);
  border-radius: var(--radius);
  background: rgb(255 255 255 / 0.88);
  box-shadow: 0 22px 70px rgb(18 34 26 / 0.22);
}

.phone-card img {
  border-radius: calc(var(--radius) - 6px);
}

.signal-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  overflow: hidden;
}

.signal-band div {
  padding: 26px;
  background: white;
}

.signal-band strong,
.signal-band span {
  display: block;
}

.signal-band span {
  margin-top: 8px;
  color: var(--muted);
}

.section-heading {
  display: grid;
  gap: 14px;
  max-width: 760px;
}

.section-heading.narrow {
  max-width: 620px;
}

.section-heading h2,
.screen-copy h2,
.send-panel h2,
.offline-copy h2,
.setup-title h2,
.support-copy h2,
.final-cta h2 {
  font-size: clamp(36px, 5vw, 58px);
}

.section-heading p,
.screen-copy p,
.send-panel p,
.offline-copy p,
.support-copy p,
.final-cta p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.55;
}

.process-rail {
  display: grid;
  grid-template-columns: repeat(6, minmax(170px, 1fr));
  gap: 12px;
  margin-top: 36px;
  overflow-x: auto;
  padding-bottom: 6px;
}

.process-step {
  min-height: 190px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
}

.process-step span {
  width: 42px;
  height: 42px;
  background: var(--soft);
  color: var(--accent-dark);
  font-family: "Cascadia Mono", Consolas, monospace;
  font-weight: 800;
}

.process-step p {
  margin: 40px 0 0;
  font-size: 17px;
  line-height: 1.35;
}

.screens {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 48px;
  align-items: start;
}

.screen-copy {
  position: sticky;
  top: 120px;
}

.screen-masonry {
  columns: 3 180px;
  column-gap: 16px;
}

.screen-shot {
  break-inside: avoid;
  margin: 0 0 16px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
}

.screen-shot img {
  border-radius: calc(var(--radius) - 8px);
}

.screen-shot figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 14px;
}

.feature-bento {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
  margin-top: 34px;
}

.feature-card {
  min-height: 230px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
}

.icon,
.large-icon {
  color: var(--accent-dark);
  font-weight: 850;
}

.icon {
  display: inline-grid;
  min-width: 36px;
  min-height: 28px;
  place-items: center;
}

.large-icon {
  font-size: 32px;
}

.feature-card h3 {
  margin: 28px 0 10px;
  font-size: 22px;
}

.feature-card p,
.setup-lanes p,
.support-stack p {
  margin: 0;
  color: var(--muted);
  line-height: 1.48;
}

.cell-0,
.cell-3 {
  grid-column: span 3;
  background: var(--soft);
}

.cell-1,
.cell-2,
.cell-4,
.cell-5 {
  grid-column: span 2;
}

.send {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 18px;
  align-items: stretch;
}

.send-panel {
  display: grid;
  align-content: space-between;
  min-height: 620px;
  padding: clamp(26px, 5vw, 54px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
}

.send-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.send-options article {
  display: grid;
  gap: 12px;
  min-height: 116px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--soft);
}

.send-image {
  min-height: 620px;
}

.offline {
  display: grid;
  grid-template-columns: 1fr 0.72fr;
  gap: 44px;
  align-items: center;
}

.offline-map {
  position: relative;
  min-height: 520px;
  transform-style: preserve-3d;
}

.offline-badge {
  position: absolute;
  left: 22px;
  bottom: 22px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-radius: var(--radius);
  background: white;
  color: var(--accent-dark);
  font-weight: 760;
  box-shadow: var(--shadow);
}

.setup {
  display: grid;
  grid-template-columns: 0.76fr 1.24fr;
  gap: 40px;
  align-items: start;
}

.setup-title {
  display: grid;
  gap: 18px;
}

.setup-lanes {
  display: grid;
  gap: 12px;
}

.setup-lanes article {
  padding: 24px;
  border-left: 6px solid var(--accent);
  border-radius: var(--radius);
  background: white;
}

.setup-lanes h3,
.support-stack h3 {
  margin: 0 0 8px;
}

.support {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 44px;
  align-items: center;
}

.support-stack {
  display: grid;
  gap: 12px;
}

.support-stack article {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
}

.support-stack span {
  color: var(--accent-dark);
  font-weight: 900;
}

.final-cta {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: center;
  margin-bottom: 36px;
  padding: 48px;
  border-radius: var(--radius);
  background: white;
  box-shadow: var(--shadow);
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 {
  transition-delay: 120ms;
}

.delay-2 {
  transition-delay: 220ms;
}

.float-card {
  animation: float-card 5.5s ease-in-out infinite;
}

.pulse-badge {
  animation: pulse-badge 2.8s ease-in-out infinite;
}

@keyframes float-card {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes pulse-badge {
  0%,
  100% {
    box-shadow: var(--shadow);
  }
  50% {
    box-shadow: 0 24px 70px rgb(37 180 124 / 0.32);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .float-card,
  .pulse-badge {
    animation: none;
  }
}

@media (max-width: 980px) {
  .nav-shell {
    grid-template-columns: 1fr auto;
  }

  .nav-links {
    display: none;
  }

  .hero,
  .screens,
  .send,
  .offline,
  .setup,
  .support,
  .final-cta {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual,
  .hero-photo,
  .send-panel,
  .send-image,
  .offline-map {
    min-height: 480px;
  }

  .screen-copy {
    position: static;
  }

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

  .cell-0,
  .cell-1,
  .cell-2,
  .cell-3,
  .cell-4,
  .cell-5 {
    grid-column: span 1;
  }

  .final-cta {
    align-items: start;
  }
}

@media (max-width: 640px) {
  .section {
    width: min(100% - 28px, 1180px);
    padding: 62px 0;
  }

  .compact {
    padding: 30px 0;
  }

  .nav-shell {
    min-height: 66px;
    padding-inline: 14px;
  }

  .nav-cta {
    display: none;
  }

  .hero-copy h1 {
    font-size: 44px;
  }

  .hero-subtext {
    font-size: 18px;
  }

  .hero-actions,
  .send-options,
  .signal-band,
  .feature-bento {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    display: grid;
  }

  .phone-card {
    right: 14px;
    width: 210px;
  }

  .signal-band,
  .send-options {
    display: grid;
  }

  .screen-masonry {
    columns: 1;
  }

.final-cta {
  padding: 28px;
  }
}

.manual-page {
  overflow: visible;
}

.manual-hero {
  display: grid;
  gap: 18px;
  padding-bottom: 42px;
}

.manual-hero h1 {
  max-width: 840px;
  margin: 0;
  font-size: clamp(46px, 7vw, 82px);
  line-height: 0.98;
}

.manual-hero p:not(.eyebrow) {
  max-width: 780px;
  margin: 0;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.55;
}

.manual-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  padding-top: 20px;
}

.manual-toc {
  position: sticky;
  top: 96px;
  display: grid;
  gap: 10px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
}

.manual-toc strong {
  margin-bottom: 8px;
}

.manual-toc a {
  color: var(--muted);
  font-size: 15px;
}

.manual-content {
  display: grid;
  gap: 18px;
}

.manual-card {
  padding: clamp(22px, 4vw, 42px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
}

.manual-card h2 {
  margin: 0 0 18px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.05;
}

.manual-card h3 {
  margin: 0 0 8px;
}

.manual-card p {
  color: var(--muted);
  line-height: 1.62;
}

.manual-card ol {
  margin: 0;
  padding-left: 24px;
}

.manual-card li {
  margin: 0 0 12px;
  padding-left: 4px;
  line-height: 1.55;
}

.manual-steps li::marker {
  color: var(--accent-dark);
  font-weight: 800;
}

.manual-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.manual-grid div {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--soft);
}

.manual-grid p {
  margin: 0;
}

.manual-table-wrap {
  overflow-x: auto;
}

.manual-table {
  width: 100%;
  min-width: 820px;
  border-collapse: collapse;
  font-size: 15px;
}

.manual-table th,
.manual-table td {
  padding: 14px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  line-height: 1.45;
}

.manual-table th {
  background: var(--soft);
  color: var(--ink);
}

.manual-table td {
  color: var(--muted);
}

.manual-table td strong,
.manual-card strong {
  color: var(--ink);
}

@media (max-width: 980px) {
  .manual-layout {
    grid-template-columns: 1fr;
  }

  .manual-toc {
    position: static;
  }

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