:root {
  --ink: #122236;
  --muted: #5a6b7d;
  --line: #dfe7ef;
  --paper: #ffffff;
  --soft: #f4f8fc;
  --blue: #2563eb;
  --blue-dark: #102c5c;
  --cyan: #38bdf8;
  --green: #059669;
  --purple: #7c3aed;
  --orange: #f59e0b;
  --red: #ef4444;
  --teal: #0f766e;
  --shadow: 0 16px 42px rgba(15, 35, 70, 0.1);
  --radius: 8px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--soft);
  font-family: Inter, Arial, sans-serif;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px max(18px, calc((100vw - var(--max)) / 2));
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-width: 190px;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
}

.brand strong {
  display: block;
  font-size: 1.32rem;
  font-weight: 900;
  color: var(--blue);
}

.brand small {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: #3d4d60;
  font-weight: 800;
}

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

.header-actions {
  display: flex;
  gap: 10px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 12px 18px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-weight: 900;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--green), #16c79a);
  box-shadow: 0 12px 24px rgba(5, 150, 105, .22);
}

.button-light {
  color: var(--blue-dark);
  background: #fff;
  border-color: rgba(255,255,255,.56);
}

.button-ghost {
  color: var(--blue-dark);
  background: #f7fbff;
  border-color: var(--line);
}

.hero {
  position: relative;
  min-height: calc(100svh - 92px);
  display: grid;
  align-items: center;
  overflow: hidden;
  background: #0f243a;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center right;
  opacity: .38;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(12, 31, 52, .96) 0%, rgba(12, 31, 52, .84) 42%, rgba(15, 118, 110, .34) 100%),
    radial-gradient(circle at 82% 18%, rgba(56, 189, 248, .34), transparent 28%);
}

.hero-content {
  position: relative;
  width: min(calc(100% - 36px), var(--max));
  margin: 0 auto;
  padding: 76px 0 86px;
  color: #fff;
}

.eyebrow {
  display: inline-flex;
  margin-bottom: 16px;
  padding: 7px 11px;
  border-radius: var(--radius);
  color: #0b5e44;
  background: #dcfce7;
  font-size: .88rem;
  font-weight: 900;
}

.eyebrow.light {
  color: #dff7ff;
  background: rgba(255, 255, 255, .14);
}

h1,
h2,
h3 {
  margin-top: 0;
  letter-spacing: 0;
}

h1 {
  max-width: 850px;
  margin-bottom: 18px;
  font-size: clamp(2.4rem, 5.2vw, 5.3rem);
  line-height: .98;
  font-weight: 900;
}

.hero p {
  max-width: 760px;
  margin: 0 0 26px;
  color: rgba(255,255,255,.88);
  font-size: clamp(1rem, 1.6vw, 1.28rem);
  line-height: 1.65;
}

.hero-actions,
.support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.hero-metrics span {
  padding: 12px 14px;
  border-radius: var(--radius);
  color: #e9f8ff;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.16);
}

.hero-metrics strong {
  color: #fff;
}

.section {
  width: min(calc(100% - 36px), var(--max));
  margin: 0 auto;
  padding: 72px 0;
}

.section-heading {
  max-width: 830px;
  margin: 0 auto 32px;
  text-align: center;
}

.section-heading.compact {
  max-width: 760px;
}

.section-heading h2 {
  margin-bottom: 12px;
  font-size: clamp(2rem, 3vw, 3.2rem);
  line-height: 1.08;
  font-weight: 900;
}

.section-heading p,
.signal-card p,
.intro-video-card p,
.module-card p,
.feature-panel p,
.timeline p,
.plan-card p,
.faq-list p,
.support-box p,
.site-footer p {
  color: var(--muted);
  line-height: 1.68;
}

.signal-grid,
.module-grid,
.plan-grid,
.audience-grid {
  display: grid;
  gap: 18px;
}

.signal-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.intro-video-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(230px, 340px);
  gap: 22px;
  align-items: stretch;
  margin: -2px 0 28px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(37, 99, 235, .08), rgba(5, 150, 105, .08)),
    #fff;
  box-shadow: var(--shadow);
}

.intro-video-copy {
  min-width: 0;
}

.intro-video-copy h3 {
  margin: 8px 0 8px;
  font-size: clamp(1.45rem, 2vw, 2.1rem);
  line-height: 1.12;
}

.intro-video-link {
  display: grid;
  place-items: center;
  gap: 8px;
  min-height: 188px;
  padding: 22px;
  color: #fff;
  text-align: center;
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 78% 18%, rgba(255,255,255,.22), transparent 32%),
    linear-gradient(135deg, #ef4444, #7c3aed 56%, #2563eb);
  box-shadow: 0 16px 34px rgba(124, 58, 237, .22);
}

.intro-video-link strong {
  font-size: 1.2rem;
}

.intro-video-link small {
  color: rgba(255,255,255,.82);
  font-weight: 800;
}

.play-button {
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  padding-left: 4px;
  border-radius: 50%;
  color: #ef4444;
  background: #fff;
  font-size: 1.45rem;
  line-height: 1;
  box-shadow: 0 12px 22px rgba(0,0,0,.18);
}

.signal-card,
.module-card,
.plan-card,
.feature-panel,
.support-box,
.faq-list details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.signal-card {
  padding: 24px;
}

.signal-card span {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  margin-bottom: 16px;
  border-radius: var(--radius);
  color: #fff;
  background: var(--blue);
  font-weight: 900;
}

.signal-card h3,
.module-card h3,
.timeline h3 {
  margin-bottom: 8px;
  font-size: 1.24rem;
}

.module-section {
  width: 100%;
  max-width: none;
  padding: 78px max(18px, calc((100vw - var(--max)) / 2));
  background: #fff;
}

.module-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.module-card {
  padding: 22px;
}

.module-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 16px;
  border-radius: var(--radius);
  color: #fff;
  font-weight: 900;
}

.module-icon.blue { background: var(--blue); }
.module-icon.green { background: var(--green); }
.module-icon.purple { background: var(--purple); }
.module-icon.orange { background: var(--orange); }
.module-icon.red { background: var(--red); }
.module-icon.teal { background: var(--teal); }

.feature-band {
  width: 100%;
  max-width: none;
  padding: 76px max(18px, calc((100vw - var(--max)) / 2));
  background: linear-gradient(135deg, #0d2b48, #0f766e);
}

.feature-panel {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 42px;
  align-items: center;
  padding: 34px;
  color: #fff;
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.18);
  box-shadow: none;
}

.feature-copy {
  min-width: 0;
}

.feature-panel h2,
.support-box h2 {
  margin-bottom: 14px;
  font-size: clamp(1.9rem, 3vw, 3rem);
}

.feature-panel p,
.support-box p {
  color: rgba(255,255,255,.82);
}

.check-list {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  padding: 12px 14px;
  border-radius: var(--radius);
  background: rgba(255,255,255,.12);
  font-weight: 800;
}

.check-list li::before,
.plan-card li::before {
  content: "✓";
  margin-right: 9px;
  color: #22c55e;
  font-weight: 900;
}

.device-showcase {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 390px;
  padding: 24px 0 12px;
}

.device-showcase-image {
  display: block;
  width: min(100%, 720px);
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 34px 46px rgba(15, 23, 42, .20));
}

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

.timeline article {
  padding: 22px;
  border-left: 4px solid var(--blue);
  border-radius: var(--radius);
  background: #fff;
}

.timeline strong {
  color: var(--blue);
  font-size: 1.6rem;
}

.plan-section {
  width: 100%;
  max-width: none;
  padding: 78px max(18px, calc((100vw - var(--max)) / 2));
  background: linear-gradient(180deg, #eef7ff, #ffffff);
}

.plan-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.plan-card {
  position: relative;
  padding: 28px;
}

.plan-card.featured {
  border-color: rgba(124, 58, 237, .36);
  box-shadow: 0 22px 56px rgba(124, 58, 237, .15);
}

.plan-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 6px 9px;
  border-radius: var(--radius);
  color: #fff;
  background: var(--purple);
  font-size: .76rem;
  font-weight: 900;
}

.plan-kicker {
  color: var(--green);
  font-size: .82rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .07em;
}

.plan-card h3 {
  margin: 10px 0;
  font-size: 1.8rem;
}

.price {
  margin-bottom: 12px;
  color: var(--green);
  font-size: 2.35rem;
  font-weight: 900;
}

.price small {
  color: var(--muted);
  font-size: .95rem;
}

.plan-card ul {
  display: grid;
  gap: 10px;
  margin: 22px 0;
  padding: 0;
  list-style: none;
  color: #31445a;
}

.button-plan {
  width: 100%;
  color: var(--blue-dark);
  background: #f2f7ff;
  border-color: #c8daf4;
}

.button-plan.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--purple), var(--blue));
}

.plan-note {
  max-width: 820px;
  margin: 24px auto 0;
  color: var(--muted);
  text-align: center;
  line-height: 1.6;
}

.audience-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.audience-grid article {
  display: grid;
  gap: 14px;
  justify-items: center;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  font-weight: 900;
  text-align: center;
}

.audience-grid img {
  height: 86px;
}

.support-section {
  width: 100%;
  max-width: none;
  padding: 72px max(18px, calc((100vw - var(--max)) / 2));
  background: #0f243a;
}

.support-box {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 360px);
  align-items: center;
  gap: 32px;
  padding: 34px 34px 0;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(37, 99, 235, .32), rgba(5, 150, 105, .32)),
    rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.16);
}

.support-copy {
  position: relative;
  z-index: 2;
  max-width: 680px;
  padding-bottom: 34px;
}

.support-media {
  position: relative;
  align-self: end;
  display: flex;
  justify-content: center;
  min-height: 295px;
  padding: 22px 20px 0;
  border-radius: 8px 8px 0 0;
  background:
    radial-gradient(circle at 50% 18%, rgba(255,255,255,.28), transparent 32%),
    linear-gradient(180deg, rgba(255,255,255,.15), rgba(255,255,255,.04));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.18);
}

.support-media::before {
  content: "";
  position: absolute;
  inset: 22px 18px 0;
  border-radius: 999px 999px 0 0;
  background: linear-gradient(180deg, rgba(255,255,255,.12), rgba(255,255,255,0));
}

.support-media img {
  position: relative;
  z-index: 1;
  display: block;
  width: min(100%, 250px);
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 22px 28px rgba(0,0,0,.28));
}

.faq-section {
  padding-bottom: 88px;
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 900px;
  margin: 0 auto;
}

.faq-list details {
  padding: 18px 20px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 900;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
  padding: 34px max(18px, calc((100vw - var(--max)) / 2));
  color: #dbeafe;
  background: #0c1726;
}

.site-footer strong {
  color: #fff;
  font-size: 1.4rem;
}

.site-footer p {
  margin: 6px 0;
  color: #b8c7d9;
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .main-nav,
  .header-actions {
    width: 100%;
    flex-wrap: wrap;
  }

  .signal-grid,
  .module-grid,
  .plan-grid,
  .timeline,
  .audience-grid,
  .intro-video-card,
  .feature-panel,
  .site-footer {
    grid-template-columns: 1fr 1fr;
  }

  .support-box {
    grid-template-columns: 1fr;
    align-items: flex-start;
    padding: 30px 30px 0;
  }

  .support-copy {
    padding-bottom: 0;
  }

  .support-media {
    width: min(100%, 360px);
    justify-self: center;
  }

  .device-showcase {
    min-height: 300px;
    padding-top: 8px;
  }
}

@media (max-width: 640px) {
  .main-nav {
    gap: 12px;
    font-size: .94rem;
  }

  .header-actions .button {
    flex: 1;
  }

  .hero {
    min-height: auto;
  }

  .hero-content {
    padding: 62px 0 70px;
  }

  .hero-metrics,
  .hero-actions,
  .support-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .signal-grid,
  .module-grid,
  .plan-grid,
  .timeline,
  .audience-grid,
  .intro-video-card,
  .feature-panel,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .section,
  .module-section,
  .feature-band,
  .plan-section,
  .support-section {
    padding-top: 54px;
    padding-bottom: 54px;
  }

  .feature-panel {
    padding: 24px;
  }

  .device-showcase {
    min-height: 255px;
    padding: 4px 0 16px;
  }

  .support-box {
    padding: 24px 20px 0;
  }

  .support-media {
    min-height: 245px;
    padding-top: 14px;
  }

  .support-media img {
    width: min(100%, 210px);
  }
}